KR102537519B1 - Frozen, refrigeration and heating control system of refrigerating vehicle - Google Patents

Abstract

The present invention relates to a refrigeration, refrigeration, and heating control system for a refrigeration truck, and the present invention relates to a compressor, a battery, a main condenser, a first evaporation unit, a second evaporation unit, a condenser for heating, and a control controller, so that the freezer compartment is operated by the second evaporation. At the same time as controlling for freezing through the unit, the refrigerating compartment can be selectively controlled through the first evaporation unit or condenser for heating so that the refrigeration or heating system is operated so that it can be used for refrigeration even in winter. B. By driving the refrigeration system or heating system during the winter season, it can be used for refrigeration at all times regardless of the summer season or winter season. On the other hand, as the battery and control controller are applied, the driving means for driving the control system is applied as a separate battery. Unlike conventional structures connected to the engine of a vehicle, even when the engine of the vehicle is stopped, the control system can be driven and controlled through the battery, which is a driving means, through the control controller, and through this, the system for always refrigerating, refrigerating, or heating is driven to facilitate constant temperature management for the freezing and refrigerating chambers, and at the same time, it is possible to remarkably increase delivery efficiency.

Description

Refrigeration, refrigeration and heating control system of refrigerated vehicle {Frozen, refrigeration and heating control system of refrigerating vehicle}

The present invention relates to a refrigerating, refrigerating and heating control system for a refrigeration truck, and more particularly, by applying a compressor, a battery, a main condenser, a first evaporation unit, a second evaporation unit, a condenser for heating, and a control controller, the freezing compartment operates in a second At the same time as controlling for freezing through the evaporation unit, the refrigerating compartment can be selectively controlled through the first evaporation unit or condenser for heating so that the refrigeration or heating system is operated so that it can be used for refrigeration even in winter. By driving the refrigeration system or heating system in summer or winter, it can be used for refrigeration at all times regardless of summer or winter. Therefore, unlike the conventional structure connected to the engine of the vehicle, even when the engine of the vehicle is stopped, the control system can be driven and controlled through the battery, which is the driving means, through the control controller. The present invention relates to a refrigeration, refrigeration and heating control system of a freezer truck, which enables the system to easily manage the constant temperature of the freezer compartment and the refrigerating compartment and significantly increases delivery efficiency.

In general, a refrigerated truck is a special vehicle prepared to transport loads while continuously maintaining a low-temperature environment in a loading space in order to solve a problem in which loads are damaged or damaged or deformed in a high-temperature environment.

Various technologies are being developed to improve the cooling efficiency and performance of the cooling system for building a low-temperature environment inside the separately prepared loading space of these refrigerated trucks. Various attempts have been made to provide a load for refrigeration or freezing according to the purpose of the load by establishing different internal temperature levels of the partitioned loading space.

However, in the conventional refrigeration truck, which provides a loading space for refrigeration and a loading space for refrigeration, the supply of cold air generated by the cooling system provided to build a low-temperature environment in the loading space of the vehicle is the loading space for refrigeration. It was provided sequentially to the loading space for over-refrigeration, and for this purpose, a predetermined open space was formed between the two partitioned spaces to form a structure in which cold air could move to each other.

For this reason, conventional refrigeration trucks have problems in that not only the mutual exchange of cold air, but also the high-temperature air layer introduced from the outside during loading or unloading affects all loading spaces, and furthermore, sharing a certain space There was a problem that the two loading spaces partitioned so as to affect the state of the low-temperature environment inside each other.

In consideration of this, recently, the compartment space inside the loading box has been divided into refrigerating and freezing spaces according to the purpose and prepared as separate spaces, and separate evaporators are installed in each of these mutually disconnected compartments to improve the refrigerant circulation path. Technology for individual control by division is being developed, and as a prior art document related to this, there is Patent Document 1 (Korean Registered Patent Publication No. 1693303, registered on December 30, 2016.) filed and registered by the present applicant.

However, the refrigeration and refrigeration individual control system for refrigeration trucks disclosed in Patent Document 1 (Registered on December 30, 2016, Republic of Korea Patent Publication No. 1693303) does not apply a heating system for use for refrigeration in the winter season. There was a problem that it was difficult to use for refrigeration.

Furthermore, since the driving means for driving the compressor, as the driving means for driving the control system for refrigeration and refrigeration, is applied in a structure in which the driving means for driving the compressor is connected to the engine of the vehicle and driven, power for driving the system is not supplied when the engine of the vehicle is stopped. Therefore, it is difficult to maintain constant temperature in the freezing and refrigerating chambers, and at the same time, the delivery efficiency is significantly reduced.

Therefore, the freezing chamber is controlled for freezing and the refrigerating chamber is selectively controlled to be used for refrigeration even in the winter. Regardless, it can be used for refrigeration at all times, while the battery and control controller are applied, so that the driving means for driving the control system is applied as a separate battery, unlike the conventional structure connected to the engine of the vehicle. Even when the engine is stopped, the control system can be driven and controlled through the battery, which is the driving means, through the control controller. Research and development are required for refrigeration, refrigeration and heating control systems of refrigerated trucks that can significantly increase delivery efficiency.

Republic of Korea Patent Registration No. 1693303 2016.12.30. registration. Republic of Korea Patent No. 0983259 2010.09.14. registration. Republic of Korea Patent No. 1180899 2012.09.03. registration. Republic of Korea Patent No. 1917750 2018.11.06. registration. Republic of Korea Patent Publication No. 2020-0031359 2020.03.24. open.

In order to solve the above problems, in the present invention, a compressor, a battery, a main condenser, a first evaporation unit, a second evaporation unit, a heating condenser, and a control controller are applied, so that the freezer compartment is controlled for freezing through the second evaporation unit. At the same time, the refrigerating compartment can be selectively controlled through the first evaporation unit or the condenser for heating so that the refrigeration or heating system can be operated so that it can be used for refrigeration even in the winter season. It is an object of the present invention to provide a refrigerating, refrigerating and heating control system of a refrigeration truck that can be used for refrigeration at all times regardless of summer or winter by driving the.

Another object of the technology according to the present invention is that the battery and the control controller are applied so that the driving means for driving the control system is applied as a separate battery, unlike in the conventional structure through connection with the engine of the vehicle, when the vehicle engine is stopped Through the Edo control controller, the control system can be driven and controlled through the battery, which is the driving means, and through this, the system for freezing, refrigerating or heating is driven at all times to facilitate constant temperature management of the freezing and refrigerating chambers, and at the same time, delivery efficiency is to be able to significantly increase.

The present invention for achieving the above object is as follows. That is, the refrigeration, refrigeration, and heating control system of the refrigeration vehicle according to the present invention is the refrigeration, refrigeration, and heating control system of the refrigeration vehicle for maintaining the refrigeration tower of the refrigeration vehicle at a set low temperature for freezing or refrigeration. A compressor that compresses the refrigerant and discharges the high-temperature and high-pressure refrigerant; a battery supplying driving power to the compressor; a main condenser for condensing the refrigerant discharged from the compressor and moving through the first refrigerant transfer pipe into a low-temperature and high-pressure refrigerant; A first expansion valve and a first evaporator connected to a first refrigerant branch pipe branched from a second refrigerant transfer pipe through which the low-temperature and high-pressure refrigerant condensed through the main condenser is discharged, and a first evaporator of the first refrigerant branch pipe. It further includes a first solenoid valve installed on one side before the installation position of the expansion valve to adjust the flow rate of refrigerant flowing in from the second refrigerant pipe, and providing cold air to the refrigerating chamber of the freezing tower using the refrigerant moving through the first refrigerant branch pipe. A first evaporation unit to; A second expansion valve and a second evaporator connected to a second refrigerant branch pipe branched from the second refrigerant pipe are installed on one side of the second refrigerant branch pipe before the installation position of the second expansion valve, and the second refrigerant pipe is installed. a second evaporation unit that further includes a second solenoid valve that controls the flow rate of the refrigerant introduced from the refrigerant branch, and supplies cold air to the freezing chamber of the freezing tower using the refrigerant moving through the second refrigerant branch pipe; After being discharged from the compressor and moving through the refrigerant branch pipe for heating branched from the first refrigerant pipe, the refrigerant introduced into the inside is condensed into a low-temperature and high-pressure refrigerant, and the condensed refrigerant passes through the refrigerant pipe for heating to the first refrigerant pipe. a condenser for heating to be transferred to the main condenser through the main condenser, and to provide warmth to the refrigerating chamber of the refrigerating tower by using the refrigerant moving through the refrigerant transfer pipe for heating; a solenoid valve for heating installed on a side of the refrigerant branch pipe for heating branching from the first refrigerant transfer pipe to control a flow rate of refrigerant flowing into the condenser for heating from the refrigerant branch pipe for heating; and a control controller controlling open/close states of the first solenoid valve, the second solenoid valve, and the solenoid valve for heating.

At this time, the control controller controls the first solenoid valve and the second solenoid so that the flow rate of refrigerant branched from the second refrigerant transfer pipe to the second refrigerant branch pipe is greater than the flow rate of refrigerant branched to the first refrigerant branch pipe. While the degree of opening and closing of the valve is controlled differently, it is preferable that the rated capacity of the first orifice installed in the first expansion valve is smaller than the rated capacity of the second orifice installed in the second expansion valve.

In addition, the second evaporation unit is installed on one side of the second refrigerant branch pipe between the installation position of the second solenoid valve and the installation position of the second expansion valve, and the second refrigerant through the opened second solenoid valve. A heat exchanger for cooling the low-temperature and high-pressure condensed refrigerant flowing into the engine to a lower temperature, wherein the second expansion valve passes through the heat exchanger and is condensed through the main condenser and discharged through the low-temperature and high-pressure refrigerant. It is preferable to expand the low-temperature and high-pressure refrigerant having a low temperature so that the low-temperature, low-pressure refrigerant is transferred to the second evaporator.

The refrigerating, refrigerating, and heating control system of the freezer vehicle includes a first temperature sensor for sensing the internal temperature of the refrigerating compartment; and a second temperature sensor for sensing the internal temperature of the freezing compartment, wherein the control controller operates the first solenoid valve and the second solenoid based on the temperature values sensed by the first temperature sensor and the second temperature sensor. It is desirable to control the opening and closing of the valve and the solenoid valve for heating.

At this time, the control controller detects the internal temperature of the refrigerating compartment through the first temperature sensor as being higher than the preset first reference temperature range and not within the first reference temperature range, and at the same time detected through the second temperature sensor. When it is determined that the internal temperature of the freezing compartment is higher than the preset second reference temperature range and does not fall within the second reference temperature range, both the first and second solenoid valves are controlled to open and close, and the Preferably, the maximum value of the second reference temperature range is set to a lower temperature than the minimum value of the first reference temperature range.

Furthermore, the control controller controls the opening and closing of the first solenoid valve in a closed state when the internal temperature of the refrigerating compartment sensed through the first temperature sensor is determined to be within a preset first reference temperature range, so that the second solenoid valve is removed from the main condenser. Preferably, the refrigerant discharged through the refrigerant transfer pipe is branched and moved only to the second refrigerant branch pipe.

In addition, the control controller detects the internal temperature of the refrigerating compartment through the first temperature sensor when it is lower than the preset first reference temperature range and does not fall within the first reference temperature range. When it is determined that the internal temperature of the freezing compartment is higher than the predetermined second reference temperature range and does not fall within the second reference temperature range, the opening and closing of the first solenoid valve is controlled to be closed, and the opening and closing of the second solenoid valve is controlled. While controlling the opening and closing of the heating solenoid valve in the open state, the maximum value of the second reference temperature range may be set to a lower temperature than the minimum value of the first reference temperature range.

At this time, the control controller controls the opening and closing of the solenoid valve for heating in a closed state when the internal temperature of the refrigerating compartment sensed through the first temperature sensor is determined to be within a preset first reference temperature range, so that the refrigerant content for heating is removed from the first refrigerant transfer pipe. It is preferable to block the refrigerant branched through the engine and flowing into the condenser for heating.

Moreover, the control controller may be operated to control the opening and closing of the first solenoid valve, the second solenoid valve, and the solenoid valve for heating through a dedicated smartphone application with a wireless communication module installed therein.

In addition, the control controller has a timer reservation module installed therein to selectively control the opening and closing of the first solenoid valve, the second solenoid valve, and the solenoid valve for heating at a pre-set time to drive the refrigeration, refrigeration, and heating control systems of the refrigeration truck. can also be controlled.

The effect of the refrigeration, refrigeration and heating control system of the refrigeration truck according to the present invention is described as follows.

First, as the compressor, battery, main condenser, first evaporation unit, second evaporation unit, condenser for heating, and control controller are applied, the freezing compartment is controlled for freezing through the second evaporation unit, and the refrigerator compartment is controlled for either the first evaporation unit or heating. Through the condenser, it is possible to selectively control the refrigeration or heating system to operate so that it can be used for refrigeration even in the winter season, and through this, the refrigeration system or heating system is driven for the refrigerator compartment during the summer or winter season, Can be used for refrigeration.

Second, as the battery and the control controller are applied, the drive means for driving the control system is applied as a separate battery, so unlike in the conventional structure connected to the vehicle engine, the drive means through the control controller even when the vehicle engine is stopped. It is possible to drive and control the control system through the phosphorus battery, and through this, it is possible to drive the system for constant freezing, refrigeration, or heating to facilitate constant temperature management of the freezing and refrigerating chambers, and at the same time significantly increase delivery efficiency.

1 is an overall configuration diagram showing a refrigeration, refrigeration and heating control system of a refrigeration vehicle according to the present invention.
2 is an exemplary view showing the flow of refrigerant according to driving for freezing of the freezing compartment and refrigeration of the refrigerating compartment when the freezing, refrigerating and heating control system of the freezer vehicle according to the present invention is used in summer.
3 is an exemplary view showing the flow of refrigerant according to driving for freezing of the freezing compartment and heating of the refrigerating compartment when the freezing, refrigerating and heating control system of the freezer vehicle according to the present invention is used in winter.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a refrigeration, refrigeration and heating control system for a freezer vehicle according to the present invention will be described in detail with reference to the accompanying drawings.

1 is an overall configuration diagram showing a refrigerating, refrigerating and heating control system of a freezer vehicle according to the present invention.

2 is an exemplary view showing the flow of refrigerant according to driving for freezing of the freezing compartment and refrigeration of the refrigerating compartment when the freezing, refrigerating, and heating control system of the freezer vehicle according to the present invention is used in the summer season.

3 is an exemplary view showing the flow of refrigerant according to driving for freezing of a freezing compartment and heating of a refrigerating compartment when the freezing, refrigerating and heating control system of a freezer vehicle according to the present invention is used in winter.

As shown in FIGS. 1 to 3, the refrigeration, refrigeration and heating control system 1000 of the refrigeration vehicle according to the preferred embodiment of the present invention is for maintaining the refrigeration tower of the refrigeration vehicle at a set low temperature for freezing or refrigeration. , Largely classified, the compressor 100, the battery 200, the main condenser 300, the first evaporation unit 400, the second evaporation unit 500, the condenser for heating 600, the solenoid valve for heating 700 and control It is made including the controller 800.

Specifically, the compressor 100 compresses the sucked refrigerant and discharges the high-temperature and high-pressure refrigerant.

The compressor 100 is preferably provided as a DC compressor, and after receiving driving power from the battery 200 to compress the sucked refrigerant to make it into a high-temperature and high-pressure refrigerant, the high-temperature and high-pressure refrigerant is sent to the main condenser 300. It is an ejection device.

Moreover, the compressor 100 as described above is a compressor for supplying cold air or warm air to each of the refrigerating compartment R1 and the freezing compartment F1 of a refrigerated vehicle as an electric vehicle to which the system of the present invention is applied, and is used for refrigeration as an electric vehicle. Rather than serving as a compressor for providing cold air through an air conditioner to the driver's seat of the vehicle, the refrigeration vehicle to which the system of the present invention is applied has an air conditioner compressor and the compressor 100 that are movable by being connected to the refrigeration tower, respectively. It is desirable to have a TwinComp system.

Therefore, it is possible to have the advantage of not affecting the cooling performance mutually depending on whether each compressor is operated or not and the operating time.

In addition, the battery 200 supplies driving power to the compressor 100, and is preferably applied as a separate battery installed separately from the main battery in a refrigeration truck as an electric vehicle.

This battery 200 can be selectively charged by connecting a charging line from the outside.

Meanwhile, the main condenser 300 condenses the refrigerant introduced into the main condenser 300 after being discharged from the compressor 100 and moving through the first refrigerant transfer pipe L1 into a low-temperature and high-pressure refrigerant.

In other words, in the main condenser 300, when the high-temperature and high-pressure refrigerant discharged from the compressor 100 is moved through the first refrigerant transfer pipe L1 and introduced into the inside, it is liquefied in the process of passing through the inside to achieve a low-temperature and high-pressure state. As a device for condensing the refrigerant by cooling it to have, the refrigerant that has passed through the main condenser 300 is moved to one or more of the first evaporation unit 400 and the second evaporation unit 500.

On the other hand, the low-temperature and high-pressure refrigerant discharged through the main condenser 300 as described above moves through the second refrigerant transfer pipe (L2), which is for temporary storage of liquefied refrigerant. A receiver tank 310 and a filter dryer 320 for removing moisture and various foreign substances mixed with the refrigerant to be moved from the receiver tank 310 and delivered to the first or second evaporation units 400 and 500 are additionally provided. preferably installed.

In addition, the low-temperature and high-pressure refrigerant discharged through the main condenser 300 and moving through the second refrigerant transfer pipe L2 as described above is branched off from the second refrigerant transfer pipe L2 according to the control type. (L3) and the second refrigerant branch (L4) is moved to at least one path.

Here, when the low-temperature and high-pressure refrigerant discharged through the main condenser 300 and moving through the second refrigerant transfer pipe (L2) moves to the first refrigerant branch pipe (L3), the first evaporation unit 400 moves through the refrigerant tower. Cold air is supplied to the refrigerating chamber (R1), and when moved to the second refrigerant branch pipe (L4), cold air is supplied to the freezing chamber (F1) of the freezing tower through the second evaporation unit (500).

In other words, the first evaporation unit 400 is connected to the first refrigerant branch pipe L3 branched from the second refrigerant transfer pipe L2 through which the low-temperature and high-pressure refrigerant condensed through the main condenser 300 is discharged. It includes a first expansion valve 420 and a first evaporator 430, but is installed on one side of the first refrigerant branch pipe L3 before the installation position of the first expansion valve 420, and is installed from the second refrigerant transfer pipe L2. It further includes a first solenoid valve 410 that controls the flow rate of the refrigerant introduced, and provides cold air to the refrigerating chamber R1 of the freezing tower by using the refrigerant moving through the first refrigerant branch pipe L3.

At this time, the first expansion valve 420 is installed in the first refrigerant branch pipe (L3) branched from the second refrigerant pipe (L2) and throttles the refrigerant in the low-temperature and high-pressure state that has moved through the first refrigerant pipe (L3). The pressure is lowered through throttling to create a low-temperature low-pressure state.

In addition, in the first evaporator 430, the refrigerant in a low-temperature, low-pressure state throttled through the first expansion valve 420 undergoes a heat exchange process with ambient air generated by a fan in the evaporation pipe to lower the temperature of the ambient air. It is to form cold air in the refrigerating chamber (R1).

On the other hand, the second evaporation unit 500 includes a second expansion valve 520 and a second evaporator 530 connected to the second refrigerant branch pipe L4 branched from the second refrigerant transfer pipe L2, A second solenoid valve 510 is installed on one side of the second refrigerant branch pipe (L4) before the installation position of the second expansion valve (520) and controls the flow rate of the refrigerant flowing from the second refrigerant transfer pipe (L2). And, by using the refrigerant moving through the second refrigerant branch pipe (L4), cold air is provided to the freezing chamber (F1) of the freezing tower.

At this time, the second expansion valve 520 is installed in the second refrigerant branch pipe (L4) branched from the second refrigerant pipe (L2) and throttles the refrigerant in the low-temperature and high-pressure state that has moved through the second refrigerant pipe (L4). The pressure is lowered through throttling to create a low-temperature low-pressure state.

And, in the second evaporator 530, the refrigerant in the low-temperature and low-pressure state throttled through the second expansion valve 520 undergoes a heat exchange process with ambient air generated by a fan in the evaporation pipe to lower the temperature of the ambient air in the freezer compartment. It is to form cold air in (F1).

Moreover, the second evaporation unit 500 configured as described above has one side of the second refrigerant branch pipe L4 between the second solenoid valve 510 installation position and the second expansion valve 520 installation position. The heat exchanger 540 is installed on and cools the low-temperature and high-pressure condensed refrigerant flowing into the second refrigerant branch pipe L4 through the opened second solenoid valve 510 to a lower temperature. .

That is, by further including a heat exchanger 540 for the second evaporation unit 500 as described above, the second expansion valve 520 passes through the heat exchanger 540 and is condensed through the main condenser 300 and discharged. By expanding the low-temperature and high-pressure refrigerant having a lower temperature than the low-temperature and high-pressure refrigerant that is formed, the low-temperature, low-pressure refrigerant can be moved to the second evaporator 530, thereby forming cold air in the second evaporator 530. efficiency can be further improved.

Meanwhile, the condenser 600 for heating is discharged from the compressor 100 and moves through the refrigerant branch pipe L7 for heating branched from the first refrigerant transfer pipe L1, and then the refrigerant introduced into the inside is converted into a low-temperature and high-pressure refrigerant. and the condensed refrigerant is moved to the main condenser 300 through the first refrigerant transfer tube (L1) for heating through the refrigerant transfer tube (L8) for heating, and the refrigerant moving through the refrigerant transfer tube (L8) for heating is used in the refrigeration tower. It is to provide warmth to the refrigerating chamber (R1) of the.

In other words, the heating condenser 600 is preferably driven selectively through the control controller 800 in order to prevent freezing of items requiring refrigeration loaded in the refrigerating compartment R1 during winter use.

The heating solenoid valve 700 is installed on a side of the heating refrigerant branch pipe L7 branching from the first refrigerant transfer pipe L1 and flows into the heating condenser 600 from the heating refrigerant branch pipe L7. to regulate the refrigerant flow rate.

It is preferable that the opening and closing of the solenoid valve 700 for heating as described above is selectively controlled through the control controller 800 to provide warmth to the inside of the refrigerating compartment R1 through the driving of the condenser 600 for heating in the winter season.

Meanwhile, the control controller 800 controls the opening and closing states of the first solenoid valve 410, the second solenoid valve 510, and the solenoid valve 700 for heating.

Moreover, the control controller 800 operates the first solenoid valve 410 and the second solenoid valve 510 based on the temperature values sensed through the first temperature sensor T1 and the second temperature sensor T2. And it is preferable to control the opening and closing of the solenoid valve 700 for heating.

In other words, the refrigerating, refrigerating, and heating control system 1000 of the refrigerator compartment configured as described above measures the first temperature sensor T1 for detecting the internal temperature of the refrigerating compartment R1 and the internal temperature of the freezing compartment F1. It is preferable to further include a second temperature sensor (T2) for sensing.

In the refrigerating, refrigerating and heating control system 1000 of a freezer car configured as described above, in particular, the refrigerant evaporated and used in the first evaporator 430 is moved through the third refrigerant transfer pipe L5, and the second evaporator The refrigerant used for evaporation in 530 is moved through the fourth refrigerant transfer pipe (L6).

Here, the fourth refrigerant transfer pipe (L6) connects the second evaporator 530 and the compressor 100 to form a refrigerant circulation path, and the third refrigerant transfer pipe (L5) is one side of the fourth refrigerant transfer pipe (L6). to be joined

Moreover, although not specifically shown in the drawings, the refrigerant that has undergone heat exchange is moved back to the compressor 100 on one side after the position where the third refrigerant transfer pipe L5 of the fourth refrigerant transfer pipe L6 joins and is sucked into the refrigerant. It is preferable to install a liquid separator (not shown) for vaporizing some of them.

Meanwhile, in the refrigerating, refrigerating and heating control system 1000 of a freezer vehicle configured as described above, the control controller 800 corresponds to the refrigerating temperature range of a normal refrigerator in the refrigerating compartment R1 during the summer season. At the same time as maintaining the first reference temperature range, the freezer compartment F1 can be controlled to maintain the second reference temperature range corresponding to the freezing temperature range of a typical refrigerator.

To this end, the control controller 800 controls the flow rate of refrigerant branched from the second refrigerant transfer pipe L2 to the second refrigerant branch pipe L4 and branched to the first refrigerant branch pipe L3. It is preferable to differently control the degree of opening and closing of the first solenoid valve 410 and the second solenoid valve 510 so as to be greater than .

In addition, through the control controller 800, the refrigerating compartment R1 maintains the first reference temperature range corresponding to the refrigerating temperature range in a normal refrigerator in the summer season, and at the same time, the freezing compartment F1 refrigerates in a normal refrigerator. To be controlled to maintain the second reference temperature range corresponding to the temperature range, the rated capacity of the first orifice installed in the first expansion valve 420 is the rated capacity of the second orifice installed in the second expansion valve 520. A small relative to the capacity is preferred.

Specifically, the rated capacity of the first orifice installed in the first expansion valve 420 is 1 to 3 kW (preferably, based on an evaporation temperature of -10 ° C, a condensation temperature of 32 ° C, and a refrigerant liquid temperature immediately before the expansion valve of 28 ° C) 2 kW), and the rated capacity of the second orifice installed in the second expansion valve 520 is 2 to 4 kW based on an evaporation temperature of -30 ° C, a condensation temperature of 32 ° C and a refrigerant liquid temperature immediately before the expansion valve of 28 ° C. (preferably 3 kW).

In other words, the embodiment of the first orifice installed in the first expansion valve 420 as described above corresponds to T2-No2, and the embodiment of the second orifice installed in the second expansion valve 420 corresponds to T2-No3. There is.

As an example of using the refrigeration, refrigeration and heating control system 1000 for a refrigeration vehicle according to the present invention configured as described above in the summer season, referring to FIG. 2, first, the first temperature when the compressor 100 is initially driven The internal temperature of the refrigerating compartment R1 detected through the sensor T1 is higher than the preset first reference temperature range and does not fall within the first reference temperature range, and at the same time, the temperature detected through the second temperature sensor T2 The control controller 800 determines that the internal temperature of the freezer compartment F1 is higher than the preset second reference temperature range and does not fall within the second reference temperature range, and the control controller 800 determines that the first solenoid valve 410 ) and the opening and closing state of the second solenoid valve 510 is kept open, but the degree of opening and closing of the second solenoid valve 410 is relatively more open, compared to the flow rate of the refrigerant provided to the first evaporation unit 400. The refrigerant flow rate provided to the evaporation unit 500 is maintained to be greater.

Here, the degree of opening and closing of the first solenoid valve 410 and the second solenoid valve 510 set through the control controller 800 depends on the flow rate of the refrigerant provided to the first evaporation unit 400 and the second evaporation unit 500. It is preferable to control the ratio of the flow rate of the refrigerant provided to the ratio of 4:6 to 3:7.

Then, since the maximum value of the second reference temperature range is relatively set to a lower temperature than the minimum value of the first reference temperature range, the internal temperature of the refrigerating compartment R1 first reaches the first reference temperature range, which is controlled by the control controller ( 800) after the decision is made, the control controller 800 changes the open/closed state of the first solenoid valve 410 to closed so that all the refrigerant in the condensed state discharged to the second refrigerant transfer pipe (L2) is discharged to the second refrigerant branch pipe ( Control to move to L4).

In addition, the control controller 800 operates the first solenoid valve 410 and the second solenoid to maintain the temperature level in consideration of cooling efficiency after the internal temperatures of the refrigerating compartment R1 and the freezing compartment F1 both reach the reference temperature range. The open/closed state of the valve 510 is set to a closed or slightly opened state, and the number of revolutions of the compressor 100 is controlled to a low speed.

Thereafter, the control controller 800 continuously determines the internal temperature of the refrigerating compartment R1 detected through the first temperature sensor T1 and the internal temperature of the freezing compartment F1 detected through the second temperature sensor T2 in real time. Therefore, if a loading space deviating from the reference temperature range occurs, the first solenoid valve ( 410) and the second solenoid valve 510, it is preferable to readjust the opening/closing state of at least one valve to open.

On the other hand, as an example of winter use of the freezing, refrigerating and heating control system 1000 of the refrigeration truck according to the present invention having the above-described configuration, referring to FIG. 3, first, when the compressor 100 is initially driven, 1 The internal temperature of the refrigerating compartment (R1) sensed through the temperature sensor (T1) is lower than the preset first reference temperature range and does not fall within the first reference temperature range, and at the same time through the second temperature sensor (T2). The control controller 800 determines, through the control controller 800, that the detected internal temperature of the freezer compartment (F1) is higher than the preset second reference temperature range and does not fall within the second reference temperature range, and the control controller 800 operates the first solenoid valve The opening and closing of the 410 is controlled in the closed state, the opening and closing of the second solenoid valve 510 is controlled in the open state, and the opening and closing of the heating solenoid valve 700 is controlled in the open state.

And, after the internal temperature of the freezing chamber (F1) reaches within the second reference temperature range, the control controller 800 sets the open/closed state of the second solenoid valve 510 to close or finely to maintain the temperature level in consideration of cooling efficiency. The number of revolutions of the compressor 100 is controlled to be low at the same time as being in the open state.

In addition, when the control controller 800 determines that the internal temperature of the refrigerating compartment R1 detected through the first temperature sensor T1 has reached within a preset first reference temperature range, the heating solenoid valve 700 The opening and closing of is controlled to be closed so that the refrigerant branched from the first refrigerant transfer pipe (L1) through the refrigerant branch pipe (L7) for heating and flowing into the condenser (600) for heating is blocked.

Of course, when the control controller 800 determines that the internal temperature of the refrigerating compartment R1 detected through the first temperature sensor T1 has reached within the preset first reference temperature range, the solenoid valve for heating ( 700) can be controlled in a fine open state rather than a closed state.

Thereafter, the control controller 800 continuously determines the internal temperature of the refrigerating compartment R1 detected through the first temperature sensor T1 and the internal temperature of the freezing compartment F1 detected through the second temperature sensor T2 in real time. Therefore, if a loading space deviating from the first reference temperature range or the second reference temperature range occurs, the refrigerant circulation to the first evaporation unit 400 or heating condenser 600 built in the loading space can be achieved. It is preferable to readjust the opening/closing state of at least one of the first solenoid valve 410 and the heating solenoid valve 700 to open.

On the other hand, in the freezing, refrigerating and heating control system 1000 of the refrigeration vehicle according to the present invention having the configuration as described above, the control controller 800 may have a wireless communication module installed in consideration of the convenience of operation, When such a wireless communication module is installed inside, it can be manipulated to control the opening and closing of the first solenoid valve 410, the second solenoid valve 510, and the heating solenoid valve 700 through a dedicated smartphone application.

Furthermore, the control controller 800 may have a timer reservation module installed inside, and in the case where the timer reservation module is installed, the first solenoid valve 410, the second solenoid valve 410, and the second While controlling the opening and closing of the solenoid valve 510 and the solenoid valve 700 for heating and the compressor 100, the refrigeration, refrigeration and heating control system 1000 of the freezer vehicle may be controlled to be driven.

According to the refrigeration, refrigeration and heating control system of the refrigeration truck according to the present invention having the configuration as described above, the compressor, the battery, the main condenser, the first evaporation unit, the second evaporation unit, the condenser for heating, and the control controller are applied to the freezer compartment. It is controlled for freezing through the second evaporation unit, and at the same time, the refrigerating chamber can be selectively controlled through the first evaporation unit or the condenser for heating so that the refrigeration or heating system can be operated so that it can be used for refrigeration even in the winter season. The refrigerating system or the heating system may be driven in the refrigerating chamber during the summer or winter season, so that it may be used for refrigeration at all times regardless of the summer season or winter season.

Moreover, since the battery and the control controller are applied, the driving means for driving the control system is applied as a separate battery, so that the driving means is provided through the control controller even when the vehicle engine is stopped, unlike in the conventional structure connected to the engine of the vehicle. It is possible to drive and control the control system through the phosphorus battery, and through this, it is possible to drive the system for refrigeration, refrigeration or heating at all times to facilitate constant temperature management of the freezing and refrigerating chambers, and at the same time significantly increase delivery efficiency. .

Although specific embodiments of the present invention have been described in detail above, the present invention is not limited thereto, and various modifications can be made to the present invention by those skilled in the art, and these modifications is included in the scope of the present invention.

100: compressor 200: battery
300: main condenser 310: receiver tank
320: filter dryer 400: first evaporation unit
410: first solenoid valve 420: first expansion valve
430: first evaporator 500: second evaporation unit
510: second solenoid valve 520: second expansion valve
530: second evaporator 540: heat exchanger
600: condenser for heating 700: solenoid valve for heating
800: control controller
L1: 1st refrigerant transfer pipe L2: 2nd refrigerant transfer pipe
L3: 1st refrigerant branch L4: 2nd refrigerant branch
L5: 3rd refrigerant transfer pipe L6: 4th refrigerant transfer pipe
L7: Refrigerant branch pipe for heating L8: Refrigerant transfer pipe for heating
F1: freezer compartment R1: refrigerator compartment
T1: first temperature sensor T2: second temperature sensor

Claims (10)

In the refrigeration, refrigeration, and heating control system 1000 of a refrigeration tower vehicle for maintaining the refrigeration tower of the refrigeration tower vehicle at a set low temperature for freezing or refrigeration,
A compressor 100 that compresses the sucked refrigerant and discharges the high-temperature and high-pressure refrigerant; a battery 200 supplying driving power to the compressor 100; a main condenser (300) for condensing the refrigerant discharged from the compressor (100), moving through the first refrigerant transfer pipe (L1), and flowing into the inside into a low-temperature and high-pressure refrigerant; The first expansion valve 420 and the first evaporator 430 connected to the first refrigerant branch pipe L3 branched from the second refrigerant transfer pipe L2 through which the low-temperature and high-pressure refrigerant condensed through the main condenser 300 is discharged. ), but installed on one side of the first expansion valve 420 before the installation position of the first refrigerant branch pipe L3 to adjust the flow rate of the refrigerant introduced from the second refrigerant transfer pipe L2. A first solenoid valve ( 410), the first evaporation unit 400 providing cold air to the refrigerating chamber R1 of the freezing tower using the refrigerant moving through the first refrigerant branch pipe L3; A second expansion valve 520 and a second evaporator 530 connected to a second refrigerant branch pipe L4 branched from the second refrigerant pipe L2, wherein the second refrigerant branch pipe L4 It further includes a second solenoid valve 510 installed on one side before the installation position of the second expansion valve 520 to adjust the flow rate of refrigerant introduced from the second refrigerant transfer pipe L2, and the second refrigerant branch pipe L4 a second evaporation unit (500) providing cold air to the freezing chamber (F1) of the refrigerating tower by using the refrigerant moving therebetween; After being discharged from the compressor 100 and moving through the heating refrigerant branch pipe L7 branched from the first refrigerant transfer pipe L1, the refrigerant flowing into the inside is condensed into a low-temperature and high-pressure refrigerant, and the condensed refrigerant is used for heating. The refrigerant is moved to the main condenser 300 through the first refrigerant transfer tube (L1) through the refrigerant transfer tube (L8), and provides warmth to the refrigerating chamber (R1) of the freezing tower by using the refrigerant moving through the refrigerant transfer tube (L8) for heating. A condenser for heating (600); A solenoid valve for heating installed on a side branching from the first refrigerant transfer pipe (L1) of the heating refrigerant branch pipe (L7) and controlling the flow rate of refrigerant flowing into the heating condenser (600) from the heating refrigerant branch pipe (L7) ( 700); And a control controller 800 for controlling the opening and closing states of the first solenoid valve 410, the second solenoid valve 510 and the heating solenoid valve 700,
The refrigerating, refrigerating and heating control system 1000 of the freezer car includes a first temperature sensor T1 for sensing the internal temperature of the refrigerating compartment R1; and
Further comprising a second temperature sensor (T2) for sensing the internal temperature of the freezing chamber (F1),
The control controller 800 controls the first solenoid valve 410, the second solenoid valve 510 and heating based on the temperature values sensed through the first temperature sensor T1 and the second temperature sensor T2. Control the opening and closing of the solenoid valve 700,
The control controller 800 determines that the internal temperature of the refrigerating compartment R1 sensed through the first temperature sensor T1 is lower than the preset first reference temperature range and does not fall within the first reference temperature range. When it is determined that the internal temperature of the freezing compartment (F1) detected by the second temperature sensor (T2) is higher than the predetermined second reference temperature range and does not fall within the second reference temperature range, the first solenoid valve (410) Controls the opening and closing of the closed state, controls the opening and closing of the second solenoid valve 510 to an open state, and controls the opening and closing of the heating solenoid valve 700 to an open state,
A maximum value of the second reference temperature range is set to a lower temperature than a minimum value of the first reference temperature range.
According to claim 1,
The control controller 800 determines that the flow rate of refrigerant branched from the second refrigerant pipe L2 to the second refrigerant branch pipe L4 is greater than the flow rate of refrigerant branched to the first refrigerant branch pipe L3. While differently controlling the degree of opening and closing of the first solenoid valve 410 and the second solenoid valve 510,
Refrigeration, refrigeration and heating control system of a refrigerated vehicle, characterized in that the rated capacity of the first orifice installed in the first expansion valve 420 is smaller than the rated capacity of the second orifice installed in the second expansion valve 520 .
According to claim 1,
The second evaporation unit 500 is installed on one side of the second refrigerant branch pipe (L4) between the installation position of the second solenoid valve 510 and the installation position of the second expansion valve 520, and the open first A heat exchanger 540 for cooling the low-temperature and high-pressure condensed refrigerant flowing into the second refrigerant branch pipe L4 through the two solenoid valves 510 to a lower temperature; further comprising,
The second expansion valve 520 passes through the heat exchanger 540 and expands the low-temperature, high-pressure refrigerant having a lower temperature than the low-temperature, high-pressure refrigerant that is condensed and discharged through the main condenser 300 to expand the low-temperature, low-pressure refrigerant. The refrigeration, refrigeration and heating control system of the freezer vehicle, characterized in that for moving to the second evaporator (530).
delete According to claim 1,
The control controller 800 determines that the internal temperature of the refrigerating compartment R1 sensed through the first temperature sensor T1 is higher than the preset first reference temperature range and does not fall within the first reference temperature range, and When it is determined that the internal temperature of the freezing compartment (F1) detected by the second temperature sensor (T2) is higher than the predetermined second reference temperature range and does not fall within the second reference temperature range, the first solenoid valve (410) and the opening and closing of the second solenoid valve 510 is controlled in an open state,
A maximum value of the second reference temperature range is set to a lower temperature than a minimum value of the first reference temperature range.
According to claim 5,
The control controller 800 opens and closes the first solenoid valve 410 when it is determined that the internal temperature of the refrigerating compartment R1 detected through the first temperature sensor T1 is within a preset first reference temperature range. The refrigerant discharged from the main condenser (300) to the second refrigerant transfer pipe (L2) is branched and moved only to the second refrigerant branch pipe (L4) by controlling with control system.
delete According to claim 1,
When the control controller 800 determines that the internal temperature of the refrigerating compartment R1 detected through the first temperature sensor T1 is within a preset first reference temperature range, the heating solenoid valve 700 is opened and closed in a closed state. A control system for refrigerating, refrigerating, and heating of a refrigeration truck, characterized in that the refrigerant branched from the first refrigerant transfer pipe (L1) through the refrigerant branch pipe (L7) for heating and flowing into the condenser (600) for heating is blocked.
According to claim 1,
The control controller 800 has a built-in wireless communication module and is operated to control the opening and closing of the first solenoid valve 410, the second solenoid valve 510, and the heating solenoid valve 700 through a dedicated smartphone application. Refrigeration, refrigeration and heating control system for refrigerated trucks.
According to claim 1,
The control controller 800 has a timer reservation module installed therein so as to selectively control the opening and closing of the first solenoid valve 410, the second solenoid valve 510, and the solenoid valve 700 for heating at a pre-set time to freeze the refrigeration truck. A refrigeration, refrigeration, and heating control system for a refrigeration truck, characterized in that it is controlled to be driven for the refrigeration and heating control system (1000).

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