JPH06117722A - Absorption heat pump device - Google Patents

Abstract

PURPOSE:To quickly start the operation of absorption heat pump device in an absorption heat pump device comprising a circulation system for circulating thermal operating fluid with a plurality of heat exchanging devices including a high temperature regenerator and a passage for flowing thermal operated fluid with a desired heat exchanging device and the like. CONSTITUTION:An absorption heat pump device 100 circulates refrigerant through an absorber 1, a high temperature generator 5, a condensor 11 and an evaporator 14 and the like. Absorption liquid mixed with refrigerant is circulated through the high temperature generator 5 and the absorber 1 and the like. A required amount of thermal operating fluid is cooled or heated with the condensor 11 and the evaporator 14 so as to perform a heating or a cooling operation. A part of refrigerant liquid 7b of the condensor 11 is accumulated in a refrigerant accumulation tank 51 and a part 7d of the refrigerant liquid is accumulated. Upon completion of the operation, the accumulated refrigerant liquid 7b is given to the high temperature regenerator 5 while its liquid state is being kept at the time of starting operation or it is given as the refrigerant vapor 7c to the absorption device 1. In addition, the absorption liquid 2b of the generator 5 is accumulated at the absorption liquid accumulation tank 55 as a part 2C. Concentration of refrigerant in the absorption liquid at the initial time of operation is increased under an adding of the refrigerant with the refrigerant liquid 7b and the absorption liquid 2C of which temperature is lowered.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention cools a target heat-operated fluid by performing a required heat exchange operation by an absorption heat pump action using an absorption liquid mixed with a refrigerant.
The present invention relates to an absorption refrigerating machine, an absorption cold / hot water machine and the like (in the present invention, referred to as an absorption heat pump device) for heating.

[0002]

2. Description of the Related Art In this type of apparatus, a refrigerant is a fluid having a relatively low evaporation temperature, for example, ammonia, and a fluid having a relatively high evaporation temperature, for example, water is mixed with the refrigerant. An absorption heat pump device that uses as an absorption liquid is well known, and there is an absorption heat pump device 100 configured by providing an absorption liquid circulation system and a refrigerant circulation system like the absorption heat pump device 100 of FIG.

In FIG. 5, the circulation system of the absorbing liquid is represented by an absorbing liquid having a high refrigerant concentration accumulated at the bottom of the absorber 1, that is,
The concentrated liquid 2a will be described as a starting point.

The concentrated liquid 2a enters the high temperature generator 5 via the pipe 4 by the pump 3. Since the high temperature generator 5 is heated by the heater 6 such as a burner, the refrigerant contained in the concentrated liquid 2a evaporates, and the absorbed liquid having a high refrigerant concentration at a high temperature, that is, the diluted liquid 2b , And the refrigerant vapor 7a.

The hot dilute liquid 2b enters the decompressor 9 via the pipe line 8. The decompressor 9 is composed of, for example, a decompression valve, decompresses the dilute liquid 2b, supplies the dilute liquid 2b to the absorber 1, and sprays the dilute liquid 2b into the absorber 1.

The sprayed diluted liquid 2b is cooled by a heat-operated cooling fluid, for example, water, which flows through the cooling pipe 1A in the absorber 1. When the dilute liquid 2b flows down along the cooling pipe 1A, the dilute liquid 2b absorbs the refrigerant vapor 7c coming from the evaporator 14 to be described later, and returns to the low-temperature concentrated liquid 2a having a high refrigerant concentration to complete one cycle of the absorbing liquid. This cycle is repeated.

Next, the circulation system of the refrigerant will be described with the refrigerant vapor 7c entering the absorber 1 as the starting point. The refrigerant vapor 7c is
As described in the absorption liquid circulation system above, it is absorbed by the rare liquid 2b scattered in the absorber 1, enters the concentrated liquid 2a, and is evaporated in the high temperature generator 5 to become the refrigerant vapor 7a.

The refrigerant vapor 7a enters into the condenser 11 via the pipe line 10 and gives heat to the heat-operated fluid, for example, water passing through the heated side 11A to radiate the heat and condense into the refrigerant liquid 7b. After that, it enters the decompressor 13 via the conduit 12.

The decompressor 13 is composed of, for example, a decompression valve, decompresses the refrigerant liquid 7b and supplies the refrigerant liquid 7b to the evaporator 14, and the refrigerant liquid 7b passes through the cooled side 14A of the evaporator 14, and is a heat-operated fluid. For example, the heat is taken from water to evaporate and become the refrigerant vapor 7c, and then returns to the absorber 1 via the pipe 15 to complete the circulation of the refrigerant.

Then, the pipes 20 and 21 for supplying the heat-operated fluid to the cooling pipe 1A of the absorber 1 and the heated side 1 of the condenser 11
The pipes 22 and 23 for supplying the heat operation fluid to 1A and the pipes 24 and 25 for supplying the heat operation fluid to the cooled side 13A of the heat exchanger 13 for steam are the objects to be heated and cooled as intended. It is configured to provide a heat-operated fluid, for example, water for heating / cooling, and a fluid for assisting heat absorption / radiation, for example, water absorbed / radiated through a radiator with fins.

The structure as described above is disclosed in Japanese Patent Publication No. 3-64
784 and the like, and in such an absorption heat pump device, the above-mentioned pipe lines 20 and 21 and pipe lines 22.2
3 and a heat radiating heat exchanger (not shown) connected in series, and a circulation system for the first heat-operated fluid, and the above-mentioned conduit 24.
-The heat exchanger for heat absorption, which is configured to have two systems of a second heat-operated fluid circulating through 25 and supplies cold water from the pipe 25 or is connected in series to the pipes 24 and 25. A configuration for performing a cooling operation for cooling by (not shown) is well known.

A first heat-operated fluid circulation system passing through the pipe lines 24 and 25 and a heat-absorption heat exchanger (not shown),
The hot water is supplied from the pipe line 23 by constructing the pipe line 20.21 and the pipe lines 22. ,
A configuration is known in which a heating operation for heating is performed by a heat radiation heat exchanger (not shown) connected in series to the pipeline 23 and the pipeline 20.

Further, the control target parts such as the heater 6 and the pump 3 are constituted by an electric type which can be electrically controlled, and a temperature detector (not shown) is provided in the conduits 20 and 23. The heat source capacity is calculated by the temperature difference between the temperature values detected by the above, and the load degree is calculated by the temperature difference between the temperature values detected by providing a temperature detector (not shown) in the conduits 24 and 25. At the same time, based on these heat source capacity and load, a microcomputer is used to control the heater 6 and the pump 3 so that the current temperature value of the heating / cooling target becomes the target temperature value. A configuration in which a used control processing unit (referred to as a CPU in the present invention) (not shown) is provided is well known.

In the configuration of FIG. 5, the high temperature generator 5 is passed through to the dilute liquid 2.
Although only the decompressor 9 is provided in the path for supplying b to the absorber 1, as shown in FIG. 6, the absorbent liquid heat exchanger 31 is provided in this path to provide the concentrated liquid to be supplied from the absorber 1 to the high temperature generator 5. By supplying 2a via the heated side 31A of the absorption liquid heat exchanger 31, the concentrated liquid 2a can be preheated and supplied to the high temperature generator 5.

[0015]

In the absorption heat pump device as described above, when the operation is restarted after the operation is terminated and the temperature of each part is returned to room temperature, the absorber 1 and the high temperature generator 5 at the time of restarting the operation. The absorption liquid accumulated in the
Since the circulation of the absorption liquid between a and the diluted liquid 2b is stagnant, the concentrated liquid 2
The rare liquid 2b is mixed in a and the refrigerant concentration is averaged, and both are absorption liquids having an intermediate refrigerant concentration.

When the operation of the apparatus is started in this state, the heat capacity of each heat exchanger of the refrigerant circulation system, that is, the high-temperature generator 5, etc., each conduit, that is, the conduit 10, etc. is relatively structurally seen. Since this portion is returned to the normal temperature, the heat of the refrigerant vapor 7a generated in the high temperature generator 5 is absorbed by these heat capacities, and the refrigerant liquefies on the way to adhere to these heat capacity structure portions. Resulting in.

Therefore, it takes a considerably long time before the refrigerant vapor 7a reaches the condenser 11 as the refrigerant vapor 7c after passing through the stage of the refrigerant liquid 7b. During this time, the absorber 1 The concentration of the absorbing liquid in the inside does not rise, the concentration of the absorbing liquid in the high temperature generator 5 is also diluted, and the vicious cycle is continued, and eventually the starting characteristic until the normal heat pump action is deteriorated. Yes, therefore, the one that uses the heat-operated fluid side for cooling and heating,
There is an inconvenience that it takes too much time to start cooling and heating.

Therefore, there is a problem that it is desired to provide an absorption heat pump device that does not have such inconvenience.

[0019]

The present invention relates to a refrigerant circulation system for circulating a refrigerant by means of the above-mentioned absorber / high temperature generator / condenser / evaporator, etc., and a refrigerant circulation system by means of the high temperature generator / absorber, etc. An absorption liquid circulation system that circulates the mixed absorption liquid is provided, and the required heat operation fluid is cooled by the condenser and the evaporator.
In an absorption heat pump device that performs a heating operation, a refrigerant storage means that provides a refrigerant storage tank for storing a part of the refrigerant liquid in the middle of a path that supplies the refrigerant liquid of the condenser to the evaporator, and at the end of the operation described above. And a refrigerant operating means for supplying the stored refrigerant liquid to the high temperature generator as the refrigerant liquid at the start of the operation, and as a second device, Instead of the refrigerant operating means in the above-mentioned first device, the above-mentioned storage is performed at the end of the operation, and the stored refrigerant liquid is supplied to the evaporator at the start of the operation, and the refrigerant is supplied to the absorber as the refrigerant vapor. In addition to the refrigerant storing means and the refrigerant operating means in the first device or the second device, a third device is provided with an absorbing liquid of a high temperature generator. Path to the absorber By providing a device having a configuration in which the absorbing liquid storage means for providing the absorption liquid storage tank for storing a part of the absorbing liquid in the middle, is obtained by adapted to solve the above problems.

[0020]

In the first device, since a part of the refrigerant liquid is stored in the refrigerant storage tank at the end of the operation of the previous operation,
At the start of the next operation, the stored refrigerant liquid is supplied to the high temperature generator as the refrigerant liquid to perform the operation, so that the absorption liquid in the high temperature generator has an intermediate refrigerant concentration at the start of the operation. , As the refrigerant concentration increases due to the replenishment of the stored refrigerant liquid, and the liquid temperature rises due to the generation of mixed heat, even if the high temperature generator is at a low temperature in the heating process,
The generation of the refrigerant vapor sharply rises and a large amount of the refrigerant vapor is given to the conduit 8. Even if a part of the large amount of the refrigerant vapor is absorbed by the heat capacity of each structure and liquefied the refrigerant. As the remaining refrigerant vapor reaches the condenser, it accelerates the time it takes for the refrigerant vapor to appear as refrigerant vapor in the absorber. The circulation process of becoming a highly concentrated liquid and being sent to the high temperature generator will be followed, and the operation will quickly reach a steady operation state. This acceleration effect is effective not only in the heating operation but also in the cooling operation, but the effect is greater during the heating operation.

In the second device, the low-temperature cold water is rapidly obtained by supplying the refrigerant liquid stored in the refrigerant storage tank to the evaporator through the decompressor to evaporate it, and the cold water is absorbed as the refrigerant vapor. By giving the operation to the reactor, the refrigerant vapor first appears in the absorber, and the intermediate concentration of the absorbing liquid in the absorber quickly becomes a highly concentrated absorbing liquid and is sent to the high temperature generator, Since the refrigerant concentration of the absorbing liquid in the high temperature generator is rapidly increased, the generation of the refrigerant vapor sharply rises and a large amount of refrigerant vapor is given to the pipeline 10 even when the high temperature generator has a low temperature in the heating process. Therefore, after that, the same circulation process as the first device is followed, and the operation quickly reaches the steady operation state. This acceleration effect is effective not only in the cooling operation but also in the heating operation, but the effect is greater in the cooling operation.

Further, in the third device, even if the absorbing liquid storage tank is surrounded by a heat insulating material in order to avoid heat loss due to heat radiation from the absorbing liquid storage tank during the heating operation, the absorbing liquid storage tank is in operation during operation. Since the absorption liquid stored in the storage device is naturally radiated by the operation stop for a long time (overnight or for several hours or more) and is at a low temperature, as in the first device or the second device described above, The refrigerant vapor acceleratedly returned from the tank to the absorber is rapidly absorbed by the low-temperature absorption liquid from the absorption liquid storage tank to accelerate the concentration of the concentrated liquid 2a, so that the absorption liquid in the high temperature generator 5 is absorbed. Since the concentration of the refrigerant increases and the amount of the refrigerant vapor 7a is accelerated, the steady operation state can be reached more quickly.

[0023]

EXAMPLES Examples will be described below with reference to FIGS.
In these figures, the parts denoted by the same reference numerals as those in FIG. 5 have the same functions as those described with reference to FIG.

The embodiment shown in FIGS. 1 to 4 is an embodiment in which all the functions of the above-mentioned first device, second device and third device are mixed in one device. Refrigerant by the absorber 1, high temperature generator 5, condenser 11, evaporator 14, etc.,
That is, a refrigerant circulation system that circulates the refrigerant vapor 7a, the refrigerant liquid 7b, and the refrigerant vapor 7c, and an absorption liquid circulation system that circulates the absorption liquids 2a and 2b mixed with the refrigerant by the high temperature generator 5 and the absorber 1 are provided. The absorption heat pump device 1 is configured to cool and heat a required heat operation fluid, that is, each heat operation fluid passing through the pipe lines 20 to 25 by the condenser 11 and the evaporator 14.
In 00, the refrigerant storage means for providing the refrigerant liquid in the condenser 11 to the evaporator 14, that is, in the middle of the pipeline 12, is provided with the refrigerant storage tank 51 for storing a part 7d of the refrigerant liquid 7b, and the operation. The first refrigerant operating means for storing the refrigerant liquid 7d in the refrigerant storage tank 51 at the end of the above, and supplying the stored refrigerant liquid 7d to the high temperature generator 5 as the refrigerant liquid as it is at the start of operation,
At the end of the operation by the control processing unit 71, the refrigerant storage tank 51
Of the refrigerant liquid 7 is flowed into the absorber 1 to make the refrigerant storage tank 51 have a relatively low pressure.
The second refrigerant operating means for storing d, flowing the refrigerant liquid 7d stored at the start of the operation by the control processing unit 71 to the evaporator 14 via the pressure reducer 13, and making it the refrigerant vapor 7c to the absorber 1. , A part of the absorbing liquid 2b 2 provided in the path for supplying the absorbing liquid 2b of the high temperature generator 5 to the absorber 1, that is, in the middle of the pipeline 8.
The absorption heat pump device 100 is provided with the absorption liquid storage means for providing the absorption liquid storage tank 61 for storing c, and the control processing in each of the above-mentioned means is mainly performed by the CPU 70. Specifically, FIG.
The control processing configuration is as described above, and the position detection signal that detects the temperature of each required part, the position of the liquid surface of the required fluid such as the absorbing liquid / refrigerant liquid, that is, the liquid level, and the setting operation part 80. The setting signals for the heating / cooling target temperature and the start / end of the operation set by are given to the input / output port 71 as respective information data.

The CPU 70 fetches each information data into the working memory 73 and stores it in the processing memory 72.
That is, by performing the processing based on the processing procedure according to the flowcharts shown in FIGS. 3 and 4, each part control signal for each required control part is output to perform the required control processing.

The configuration of each embodiment will be specifically described below. [First Embodiment] First, as a first embodiment, from the configuration of FIG. 1, the check valve 55 and the absorbing liquid storage tank 5 interposed in the conduit 8 are shown.
An absorption heat pump device having a configuration in which 5 is removed and the conduit 8 is directly connected to the decompressor 9, that is, the above-mentioned first device will be described.

The on-off valves V1, V2, V3, V4 are electrically controllable on-off valves, for example, electromagnetic on-off valves, and C
The opening / closing operation is performed according to the control signals from the PU 70. The refrigerant storage tank 51 is a tank surrounded by a heat insulating material, and can be detached from each connection pipeline by joints J1, J2, and J3.

The pressure reducer 52 is, for example, a pressure reducing valve. The pump 53 is for pumping the refrigerant liquid 7d stored in the refrigerant storage tank 51 to the high temperature generator 5 against the head when the refrigerant storage tank 51 is at a position having a low head with respect to the high temperature generator 5. The pump is, for example, the same as the pump 3, and operates according to control signals from the CPU 70.

From the viewpoint of the operation of the main part of the first embodiment, the pipe lines 20, 21, 22, 23 in FIG.
Since the connection configuration of 24 and 25 is not directly related to the operation of the first embodiment, these parts will be described in the third embodiment.

The processing memory 72 of the CPU 70 stores a [control main routine] relating to the main control processing for a steady heating operation or a cooling operation, and a start subroutine and an end subroutine that jointly operate with this control main routine. The processing flow that it has is stored, and in the first embodiment, it is configured to perform the control processing according to the flowchart of [Start Subroutine, Part 1] and [End Subroutine] in FIG. In the operation state by the [control main routine], the on-off valves V1 and V2 are opened, the on-off valves V3 and V4 are closed, the pump 53 is stopped, and the condenser 11
The path for supplying the refrigerant liquid 7b to the evaporator 14 from the
→ Refrigerant storage tank 51 → Decompressor 13 has a path, and the refrigerant storage tank 51 is operating while accumulating a very small amount of the refrigerant liquid 7d. Assuming that the operation is finished from this state,
The control processing flow of the [end subroutine] will be described.

[End Subroutine] ◆ In step SP1, it is determined whether or not the operation is to be ended. Based on the presence or absence of "end data" that the setting operation unit 80 has input to end the operation, it is determined whether or not to shift to "end of operation" control. If there is "end data", shift to step SP2. , When there is no "end data", it returns to the "control main routine".

In step SP2, the on-off valve V1 is closed and the path for supplying the refrigerant liquid to the evaporator 14 is shut off, whereby the refrigerant liquid 7b in the pipeline 12 becomes the refrigerant liquid 7d in the refrigerant storage tank 51 and is stored. The next step SP3
Move to.

In step SP3, the on-off valve V4 is opened, and the refrigerant vapor 7e generated in the upper portion of the refrigerant storage tank 51 is decompressed by the decompressor 52 and discharged from the pipe 15 to the absorber 1, whereby the refrigerant liquid is discharged. After making it possible to accelerate the storage of 7d, the process proceeds to the next step SP4.

In step SP4, the "high temperature generation temperature data" obtained by the signal detecting the temperature of the dilute liquid 2b or the wall temperature in the high temperature generator 5 is compared with the predetermined temperature value stored in the processing memory 52. Then, it is determined whether or not the temperature in the high temperature generator 5 is a temperature at which the refrigerant vapor 7a can be sufficiently generated. (Because the boiling point rises as the concentration of the solution in the high temperature generator 5 decreases, it is desirable to set this predetermined temperature value slightly higher than the heating temperature during steady operation, but corrosion will occur as the temperature increases. Therefore, if the determination result is a temperature equal to or higher than a predetermined temperature value, the process proceeds to step SP6, and the predetermined temperature is exceeded. When it has not reached the value, the process proceeds to step SP5.

In step SP5, a control signal for performing a heating operation is given to the heater 6 to heat the dilute liquid 2b of the high temperature generator 5 to accelerate the generation of the refrigerant vapor 7a, and then in step SP4.
Return to. Here, if the [end subroutine] is entered while the heater 6 is performing the heating operation during operation, the heating operation is continued.

In step SP6, it is determined whether or not a predetermined amount of the refrigerant liquid 7d is stored. The height of the liquid surface of the refrigerant liquid 7d stored in the refrigerant storage tank 51, that is, the liquid level, for example, the liquid level signal obtained by detecting the position of the float provided on the liquid surface with the detection element by the Hall effect By comparing the "reserved liquid level data" with the "predetermined high liquid level value" stored in the processing memory 52, it is determined whether or not the predetermined amount of the refrigerant liquid 7d is stored. This "predetermined high liquid level value" is set to a value such that a required amount of refrigerant remains in the concentrated liquid 2a and the rare liquid 2b, and only a part of the refrigerant can store about 50% as the refrigerant liquid 7d. There is. When the "predetermined high liquid level value" is reached, the process proceeds to step SP7, and when the "predetermined high liquid level value" is not reached, the process proceeds to step SP8.

In step SP7, after waiting a predetermined short time, for example, a waiting time of 1 second, the process returns to step SP6.

In step SP8, a control signal for stopping the heating operation is given to the heater 6 to stop the operation of generating the refrigerant vapor 7a in the high temperature generator 5, and the next step SP9
Move to.

In steps SP9 and SP10, the on-off valves V2 and V4 are closed to block the refrigerant supply path and the refrigerant discharge path to the refrigerant storage tank 51 so that the refrigerant liquid 7d is maintained in a stored state. After that, give a stop signal to the pump 3 to stop the circulation of each circulation system,
Return to [control main routine].

[Start Subroutine, Part 1] Assuming that the operation is started from the state where the operation is finished by the above [end subroutine], that is, the state where the refrigerant liquid 7d is stored in the refrigerant storage tank 51, the [end subroutine Part 1]
The control processing flow of is described.

◆ In step SP11, it is determined whether or not to start the operation. The setting operation unit 80 determines whether or not to shift to the "driving start" control based on the presence / absence of "start data" that has been input to start the driving, and when there is "start data", shifts to step SP2. , When there is no "start data", it returns to the "control main routine".

In step SP12, the on-off valve V2 and the on-off valve V3 are opened to supply the high temperature generator 5 with the refrigerant liquid 7d stored in the refrigerant storage tank 51, and from the condenser 11 to the refrigerant storage tank 51. The path for supplying the coolant liquid 7b is opened.

In step SP13, the heater 6 is caused to perform the heating operation, the dilute liquid 2b of the high temperature generator 5 is heated, the refrigerant vapor 7a is generated, and the process proceeds to step SP14.

In step SP14, the operation of the pump 3 is started, and when the positional potential of the refrigerant storage tank 51 with respect to the high temperature generator 5 is small, the pump 53 is also started. Then, while circulating the absorbing liquid, the pump 53 sends the refrigerant liquid 7d to the rare liquid 2b of the high temperature generator 5 to increase the refrigerant concentration and generate a large amount of the refrigerant vapor 7a, and then to the next step SP15. Transition.

◆ In step SP15, it is determined whether or not the refrigerant liquid 7d is discharged by a predetermined amount. The "reserved liquid level data" obtained in the same manner as in step SP6 above for the liquid level height of the refrigerant liquid 7d stored in the refrigerant storage tank 51 is stored in the processing memory 52 at the "predetermined low level". It is determined whether or not the refrigerant liquid 7d is discharged by a predetermined amount by comparing with the "liquid level value". This "predetermined low liquid level value" is calculated from the condenser 11 to the evaporator 1
The refrigerant liquid 7d is set to a value in a state where the refrigerant liquid 7d remains in the refrigerant storage tank 51 to such an extent that the predetermined operation of supplying the refrigerant liquid to No. 4 is not hindered. When the "predetermined low liquid level value" is reached, step S
If it has not reached the "predetermined high liquid level value", then the process proceeds to step SP17.

◆ In step SP16,
For example, after waiting for a waiting time of 1 second, step SP15
Return to.

◆ Step SP17 ・ Step SP18 ・
In step SP19, the pump 53 is stopped and the on-off valve V3 is closed to shut off the path of the refrigerant liquid 2d that is being supplied from the refrigerant reservoir 51 to the high temperature generator 5, and the on-off valve V
1 is opened and the path for supplying the refrigerant liquid from the condenser 11 to the evaporator 14 is opened, thereby setting the steady operation state and returning to the [control main routine].

[Second Embodiment] Next, as a second embodiment,
From the configuration of FIG. 1, the check valve 55 and the absorbing liquid storage tank 55 that are interposed in the pipeline 8 are removed to directly connect the pipeline 8 to the decompressor 9, and the refrigerant storage tank 51 to the pump 53. An absorption heat pump device having a configuration in which a path for supplying the refrigerant liquid 7d to the high temperature generator 5 via the opening / closing valve V3 is removed, that is, the second device will be described.

On-off valves V1, V2, V4 and refrigerant storage tank 51
The configuration is similar to that of the first embodiment described above, but the pressure reducer 9 and the pressure reducer 13 are
A decompressor capable of adjusting the degree of decompression, for example, by operating an internal equalization type or external equalization type expansion valve, or an electric actuator provided in a decompression adjustment mechanism of the decompression valve by a control signal from the CPU 70. The decompression degree can be changed between high and low, and it operates at a high decompression degree (hereinafter, referred to as steady decompression) at the time of steady operation and the above [end subroutine] operation. ] During operation, control is performed so as to operate at a low degree of reduced pressure (hereinafter referred to as reduced pressure).

Further, the pipelines 20, 21, 22, 23, 24
The upper part of the figure connected to 25 is not directly related, as in the case of the first embodiment, and will be described in the third embodiment.

The control processing by the [control main routine] and [end subroutine] for the steady heating operation or cooling operation by the processing memory 72 of the CPU 70 is the first.
The control process is performed in the same manner as in the embodiment. In this embodiment, the operation is started by [start subroutine, part 2] in FIG. 3 instead of [start subroutine, part 1]. It is configured to do.

Therefore, the above [end subroutine]
Assuming that the operation is started and the operation is started from the state in which the refrigerant liquid 7d having the “predetermined high liquid level value” is stored in the refrigerant storage tank 51, the control processing flow of [start subroutine, 2] will be described below. explain.

[Start Subroutine / Part 2] ◆ In step SP21, when the "start data" is present, the process proceeds to step SP2 by the control processing for making the same determination as in step SP11, and when the "start data" is not present. Returns to the "control main routine".

In step SP22, the on-off valve V1 and the on-off valve V2 are opened to supply the refrigerant liquid 7d stored in the refrigerant storage tank 51 to the evaporator 14, and the refrigerant from the condenser 11 to the refrigerant storage tank 51. The path for supplying the liquid 7b is opened.

In step SP23, the decompressor 9 and the decompressor 13 are decompressed to reduce the pressure so that the flow of the dilute liquid 2b and the flow of the refrigerant vapor 7e can easily flow, and the process proceeds to step SP24.

In step SP24, the heater 6 is heated to heat the dilute liquid 2b of the high temperature generator 5 to generate the refrigerant vapor 7a, thereby increasing the pressure in the high temperature generator 5, A pressure that accelerates the flow of the rare liquid 2b and the flow of the refrigerant vapor 7e is generated, the refrigerant liquid 7d is evaporated in the evaporator 14 and flows to the absorber 1, and the refrigerant vapor 7c is absorbed by the rare liquid 2b. The concentration of the refrigerant in the concentrated liquid 2a is increased so that the process proceeds to step SP25.

In step SP25, the operation of the pump 3 is started, the absorption liquid is circulated, and the next step SP26.
Move to.

In step SP26, the decompressor 9 and the decompressor 13 are gradually returned to the steady decompression state to be in the steady operation state, and the process returns to the [control main routine].

[Third Embodiment] Next, as a third embodiment,
With the configuration of FIG. 1, in the above-mentioned third device, the above-mentioned first refrigerant operating means is applied to the start control of the heating operation, and the above-mentioned second refrigerant operating means is applied to the start control of the cooling operation. An absorption heat pump device having the above configuration will be described.

In FIG. 1, the absorbing liquid storage tank 55 interposed in the pipe 8 is provided with a predetermined amount of the absorbing liquid of the dilute liquid 2b, for example, in a path for supplying the dilute liquid 2b from the pipe 8 to the absorber 1. This is a tank for storing about 30% of the total amount of the absorbing liquid in the circulation process, and the stored rare liquid 2c is the high temperature generator 5
The check valve 54 so that it does not flow back to the high temperature generator 5 side.
It is provided on the side.

Further, the pipelines 20, 21, 22, 23, 24
The outdoor heat exchanger 61 in the upper part connected to 25
The connection path between the indoor heat exchanger 62 and the indoor heat exchanger 62 can be changed by the pipe connection switching device 63.
4 is a first thermally operated fluid that passes through the heated side 11A of the condenser 11, for example, a pump for promoting the circulation of water, and pump 65 is a second thermally operated fluid that passes through the cooled side 14A of the evaporator 14. For example, each pump is a pump for promoting the circulation of water, and each pump is an electric pump that starts and stops an operation based on a control signal from the CPU 70.

The pipe line connection switching device 63 is a switching valve for switching eight pipe lines to a connection route shown by a solid line and a connection route shown by a dotted line in the figure. It is also called a valve, and is operated by operating a switching shaft by an electric actuator that operates based on a control signal from the CPU 70 to perform switching operation.

By this switching connection by the solid line, the pipeline 2
0 → cooling pipe 1A → pipe 21 → pipe 22 → heated side 11A
→ Pipe line 23 → Outdoor heat exchanger 61 → By the circulation path of returning to the pipe line 20 via the pump 64, while circulating the first heat-operated fluid, a fan or the like is provided to the heat radiation side 61A of the outdoor heat exchanger 61. A cooling and heat radiation path for forcibly giving outdoor air to perform heat radiation, and a circulation that returns to the pipeline 24 via the pipeline 24 → cooled side 14A → pipe 25 → indoor heat exchanger 62 → pump 65 While circulating the second heat-operated fluid through the passage, the indoor air is forcibly supplied to the cooled side 62A of the indoor heat exchanger 62 by a circulation fan or the like to cool the indoor air. By forming the cooling heat radiation path, the circulation form in the case of the cooling operation is configured.

Further, by the switching connection by the dotted line, the pipe line 20 → the cooling pipe 1A → the pipe line 21 → the pipe line 22 → the heated side 11
By the circulation path of A → indoor heat exchanger 62 → return to the conduit 20 via the pump 64, the indoor air is forced to the heated side 62A of the indoor heat exchanger 62 while circulating the first thermally operated fluid. To heat the indoor air to heat the indoor air, and the pipe line 24 → cooled side 14A → pipe line 25 →
While circulating the second heat-operated fluid by the circulation path of returning to the conduit 24 via the outdoor heat exchanger 61 → the pump 65,
A circulation mode in the heating operation is configured by forming a cooling heat absorption path in which the outdoor air is forcibly supplied to the heat absorption side 61A of the outdoor heat exchanger 61 by a blower or the like to perform the heat absorption operation.

The control processing by the [control main routine] and the [end subroutine] for the steady operation by the processing memory 72 of the CPU 70 is the same as that of the first embodiment, and the heating operation is performed. [Starting Subroutine, Part 1] is used at the start of the cooling operation, and [Starting Subroutine, Part 2] is used at the start of the cooling operation. After the operation of the absorbent stored in the absorbent storage tank 55 is finished, the temperature is lowered over a long period of time so that the stored low-temperature absorbent, that is, the dilute solution 2c, is stored in the absorber 1 at the start of the operation. The configuration is such that the operation of forcibly increasing the refrigerant concentration of the concentrated liquid 2a at the start of operation by giving the operation is performed.

In [Start Subroutine, Part 3] of FIG. 4, steps SP12 to SP19 are the same as Steps SP12 through SP12 described in [Start Subroutine, Part 1].
The same control processing as the control processing by SP19 is performed, and the steps SP22 to SP30 are steps SP22 to S described in [Start Subroutine, Part 2].
Since the same control processing as the control processing by P30 is performed, the description thereof will be omitted, and the steps up to these processing steps will be described below.

In step SP11A, by the control processing for making the same determination as in step SP11 described above, if "heating start data" is present, the process proceeds to step SP11B2, and if "heating start data" is not present, step SP21.
Move to A.

In step SP11B, the pipeline connection switching 63 is controlled to control each pipeline 20, 21, 22, 23, 24.
・ Each pump 63 ・ 64 and outdoor heat exchanger 61 for 25
After making the connection between the indoor heat exchanger 62 and the indoor heat exchanger 62 corresponding to the above-described heating operation, the process proceeds to the next step SP12, and after performing the control processing of steps SP12 to SP19, the "control main routine" is entered. Return.

The process proceeds to step SP21A when there is no "heating start data" in step SP11A, and when there is "cooling start data", step SP21
If there is no "cooling start data", the procedure returns to "control main routine".

In step SP21B, the pipeline connection switching 63 is controlled to control the pipelines 20, 21, 22, 23, 24.
・ Pumps 64 and 65 for 25 and outdoor heat exchanger 61
The connection between the indoor heat exchanger 62 and the indoor heat exchanger 62 is set to the corresponding connection relationship during the above-described cooling operation, the process proceeds to the next step SP22, and the control process of steps SP22 to SP26 is performed, and then the "control main routine" is entered. Return.

[Modified Implementation] The present invention can be modified and implemented as follows.

(1) The order of steps such as opening / closing operation of each on-off valve, heating stop operation of the heater, and start / stop operation of each pump in each subroutine of FIGS. Replace within the range set to.

(2) In the first device of the first embodiment,
The pipeline 8 is provided with an absorbent storage tank 55 and a check valve 54.

(3) In the second device of the second embodiment,
The pipeline 8 is provided with an absorbent storage tank 55 and a check valve 54.

(4) The absorbing liquid storage tank 55 and the check valve 54 are transferred to the path between the pressure reducer 9 and the absorber 1.

(5) The refrigerant storage tank 51 is provided at a position higher than the high temperature generator 5 so that the refrigerant liquid 7d drops to cause the high temperature generator 5 to flow.
And the pump 53 is removed.

(6) The absorbent storage tank 55 is provided at a position lower than the high temperature generator 5 so that the diluted liquid 2c does not flow back to the high temperature generator 5, and the check valve 54 is removed.

(7) The indoor heat exchanger 62 is replaced with a heat exchanger for supplying hot water or cold water.

(8) The indoor heat exchanger 62 is removed, and the conduit for the heat-operated fluid supplied to the indoor heat exchanger 62 is constructed as a conduit for hot water supply or cold water supply.

(9) When the joints J1, J2, and J3 are separated from each other, the joint side and the joint side are closed at the same time in a hermetically sealed manner, for example, a commercially available self-sealing coupling is used for maintenance. At the time, when the refrigerant is exchanged, the refrigerant liquid 7d can be removed while being stored, facilitating the maintenance work and the disposal work of the apparatus when a harmful refrigerant is used.

(10) In the setting operation section 80, the refrigerant storage tank 5
1 is provided with an input function capable of selectively setting a storage end in which the refrigerant liquid 7d is stored and the operation ends and a non-storage end in which the refrigerant liquid d is not stored. At the beginning of the flow, the termination control processing as shown in FIG. 3 is performed only when the selection setting is storage termination, and when the non-storage is terminated, the termination control processing is performed with the path state in the steady operation being maintained. To configure.

(11) Absorption liquid heat exchanger 31 as shown in FIG.
Each of the above-mentioned first device, second device, and third device is provided for the device provided with or the device provided with a GAX heat exchanger, precooler, reflux device, and the like.

(12) Instead of the pressure reducer, an internal equalization type or external equalization type expansion valve is used as the expander, or the pressure in the absorber 1 is detected, and the degree of pressure reduction is determined based on this pressure. It is configured by providing a pressure reducing valve for controlling.

[0084]

As described above, according to the present invention, in the configuration in which the refrigerant storage tank 51 is provided, a part of the refrigerant liquid 7d is stored in the refrigerant storage tank 51 at the end of the operation, and at the start of the operation. , The stored refrigerant liquid 7d is supplied as it is to the high temperature generator 5, and the absorbing liquid in the high temperature generator 1 immediately after the start of operation,
That is, the refrigerant concentration of the dilute liquid 2b is forcibly increased, and the temperature is raised by the heat of mixing to generate a large amount of refrigerant vapor 7a,
Alternatively, the stored refrigerant liquid 7d is applied to the evaporator 14 to obtain a cooling effect in a short time, and the refrigerant vapor 7 in the absorber 1 is obtained.
Since the amount of c is forcibly increased to forcibly increase the refrigerant concentration of the dilute liquid 2b to generate a large amount of the refrigerant vapor 7a, the high temperature generator 5 has a low temperature in the heating process. Also, the generation of the refrigerant vapor rapidly increases, and a large amount of the refrigerant vapor is given to the conduit 10. Therefore, it is assumed that a part of the refrigerant vapor 7a is absorbed by the heat capacity of each part structurally and liquefied the refrigerant. However, since the remaining refrigerant vapor reaches the condenser, it is possible to quickly reach the steady operation state by accelerating the time required for the remaining refrigerant vapor to appear as the refrigerant vapor in the absorber.

Further, in the structure provided with the absorbing liquid storage tank 55, since the absorbing liquid stored in the absorbing liquid storage tank 55 during operation, that is, the diluted liquid 2a, radiates heat after the operation is stopped and has a low temperature, The refrigerant vapor forcibly returned from the refrigerant storage tank to the absorber 1 can be rapidly absorbed by the diluted liquid 2a having a low temperature to accelerate the concentration of the concentrated liquid 2a. It has features such as being able to provide an absorption heat pump device that speeds up the initial startup operation in heating / cooling operations such as cooling / hot water supply / cooling water supply.

[Brief description of drawings]

FIG. 1 is a block diagram of the present invention.

FIG. 2 is a block diagram of a main part of the present invention.

FIG. 3 is a control processing flowchart of the first and second embodiments of the present invention.

FIG. 4 is a flowchart of a main part control process of a third embodiment of the present invention.

FIG. 5 is a block diagram of a conventional technique.

FIG. 6 is a block diagram of a conventional technique.

[Explanation of symbols]

 1 Absorber 1A Cooling pipe 2a Concentrated liquid 2b Dilute liquid 2c Dilute liquid 3 Pump 4 Pipe 5 High temperature generator 6 Heater 7a Refrigerant vapor 7b Refrigerant liquid 7c Refrigerant vapor 7d Refrigerant liquid 7e Refrigerant vapor 8 Pipeline 9 Decompressor 10 Pipe Channel 11 Condenser 11A Heated side 12 Pipeline 13 Pressure reducer 14 Evaporator 14A Cooled side 15 Pipeline 20 Pipeline 21 Pipeline 22 Pipeline 23 Pipeline 24 Pipeline 25 Pipeline 31 Absorbed liquid heat exchanger 31A Covered Heating side 51 Refrigerant storage tank 52 Pressure reducer 53 Pump 54 Check valve 55 Absorbing liquid storage tank 61 Outdoor heat exchanger 61A Radiating side 62 Indoor heat exchanger 62A Cooling / cooled side / heated side / heated side 63 Pipeline Connection selector 64 Pump 65 Pump 70 CPU 71 Input / output port 72 Processing memory 73 Working memory 80 Setting operation part J1 joint J2 joint J3 joint V1 Open / close valve V2 Open / close valve V3 Open / close valve V4 Open / close valve 100 Absorption heat pump device

Claims (3)

[Claims] 1. A refrigerant circulation system in which a refrigerant is circulated by an absorber, a high temperature generator, a condenser, an evaporator, etc., and an absorbing liquid which circulates an absorbent mixed with the refrigerant by the high temperature generator, the absorber, etc. An absorption heat pump device that is provided with a circulation system and performs an operation of cooling and warming a required heat-operated fluid by the condenser and the evaporator, which is a path for supplying the refrigerant liquid of the condenser to the evaporator. Refrigerant storage means for providing a refrigerant storage tank for storing a part of the refrigerant liquid on the way, the storage is performed at the end of the operation, and the stored refrigerant liquid remains at the high temperature as the refrigerant liquid at the start of the operation. An absorption heat pump device, comprising: a refrigerant operating means for supplying to a generator. 2. A refrigerant circulation system in which a refrigerant is circulated by an absorber, a high temperature generator, a condenser, an evaporator, and the like, and an absorbent which circulates an absorbent mixed with the refrigerant by the high temperature generator, the absorber, etc. An absorption heat pump device that is provided with a circulation system and performs an operation of cooling and warming a required heat-operated fluid by the condenser and the evaporator, which is a path for supplying the refrigerant liquid of the condenser to the evaporator. Refrigerant storage means for providing a refrigerant storage tank for storing a part of the refrigerant liquid on the way, and performing the storage at the end of the operation, and supplying the stored refrigerant liquid to the evaporator at the start of the operation An absorption heat pump device, comprising: a refrigerant operation unit that converts the refrigerant vapor into a refrigerant vapor and supplies the refrigerant vapor to the absorber. 3. A refrigerant circulation system in which a refrigerant is circulated by an absorber, a high temperature generator, a condenser, an evaporator, and the like, and an absorbent which circulates an absorbent mixed with the refrigerant by the high temperature generator, the absorber, etc. An absorption heat pump device provided with a circulation system for cooling and heating a required heat-operated fluid by the condenser and the evaporator, the path of supplying a refrigerant liquid of the condenser to the evaporator. Refrigerant storage means for providing a refrigerant storage tank for storing a part of the refrigerant liquid on the way, the storage is performed at the end of the operation, and the stored refrigerant liquid remains at the high temperature as the refrigerant liquid at the start of the operation. Refrigerant operating means to give to the generator, or to give to the absorber as a refrigerant vapor, and for storing a part of the absorption liquid in the middle of the path to give the absorption liquid of the high temperature generator to the absorber Established absorbing liquid storage tank An absorption heat pump device, comprising: