CN222837104U - Car water heater - Google Patents

Abstract

The utility model discloses a vehicle-mounted water heater, which comprises a heating system, an air inlet mechanism, a water flow pipeline and a control module, wherein the heating system comprises a combustion chamber and a plurality of fire-exhaust combustors arranged on the lower side of the combustion chamber, the air inlet mechanism comprises an air inlet joint, a proportional valve and an air distribution assembly, the proportional valve is respectively connected with the air inlet joint and the air distribution assembly and used for changing the fuel gas flux, the air distribution assembly is provided with a plurality of fuel gas nozzles which are in one-to-one correspondence with the plurality of fire-exhaust combustors and can change the operation quantity of the fuel gas nozzles, the water flow pipeline is connected with the combustion chamber and is provided with a water inlet joint and a first water outlet joint, the water flow pipeline is provided with a first temperature measuring probe and a second temperature measuring probe which are used for detecting the water inlet temperature and the water outlet temperature, the water flow sensor is arranged on the water inlet joint, and the control module is respectively electrically connected with the proportional valve, the first temperature measuring probe, the second temperature measuring probe and the water flow sensor so as to control the corresponding parts according to the feedback control of the detection condition, realize the multistage adjustment power and the automatic constant temperature adjustment, and the use.

Description

Vehicle-mounted water heater

Technical Field

The utility model relates to the technical field of water heaters, in particular to a vehicle-mounted water heater.

Background

An on-vehicle water heater is a water heater which can be used on an automobile, is commonly used in a motor home and provides hot water for users. In the existing vehicle-mounted water heater, the water temperature is regulated by regulating the quantity of fuel gas flux to change the heating power, the lowest temperature rise is higher, the lowest temperature of the output hot water is higher, in addition, the outlet water temperature is easily influenced by factors such as inlet water temperature and flow, when the inlet water temperature changes or the inlet water flow changes, if the same fire is used for heating, the temperature of the obtained hot water also changes, the condition that the outlet water temperature rises or falls occurs, water temperature fluctuation occurs, and when the water temperature fluctuation occurs each time, a user needs to readjust the heat power to reset the temperature, so that the water heater is unfavorable for use.

Disclosure of utility model

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the vehicle-mounted water heater, which can control and change the running number of the gas nozzles through the gas distribution assembly, can control the gas flux of the proportional valve through detecting the water flow and the water inlet and outlet temperature, realizes multistage adjustment of power and automatic constant temperature adjustment, and is convenient to use.

According to the embodiment of the first aspect of the utility model, the vehicle-mounted water heater comprises a heating system, an air inlet mechanism, a water flow pipeline and a control module, wherein the heating system comprises a combustion chamber, a plurality of fire exhaust burners are arranged on the lower side of the combustion chamber, the air inlet mechanism comprises an air inlet joint, a proportional valve and a gas distribution assembly, the proportional valve is respectively connected with the air inlet joint and the gas distribution assembly and is used for controlling gas flux conveyed to the gas distribution assembly, the gas distribution assembly is provided with a plurality of gas nozzles, the gas nozzles are in one-to-one correspondence with the fire exhaust burners, the gas distribution assembly can change the operation quantity of the gas nozzles, the water flow pipeline is connected with the combustion chamber, the water flow pipeline is provided with a water inlet joint and a first water outlet joint, one end of the water flow pipeline, which is opposite to the water inlet joint, is provided with a second temperature measurement probe used for detecting water outlet temperature, the water flow sensor is arranged on the water inlet joint, and is respectively connected with the first temperature measurement probe, the water flow sensor and the first temperature sensor, the first temperature sensor and the second temperature sensor are respectively connected with the water flow sensor, the first temperature sensor and the temperature sensor.

When the vehicle-mounted water heater is used, water is input into the water flow pipeline through the water inlet joint, fuel gas is input into the air inlet mechanism through the air inlet joint, the fuel gas flux transmitted to the gas distribution assembly is controlled through the proportional valve, the fuel gas is output to the corresponding fire grate burner through the fuel gas nozzle on the gas distribution assembly, and the fire grate burner is used for burning and heating, so that water in the water flow pipeline connected with the combustion chamber can be heated and warmed. The first temperature measuring probe and the second temperature measuring probe respectively detect water inlet and outlet temperatures of the water flow pipeline, the water flow sensor detects water flow, when the water inlet temperature, the water flow or the water outlet temperature have fluctuation change, the first temperature measuring probe, the second temperature measuring probe and the water flow sensor feed back electric signals to the control module according to detection conditions, the control module correspondingly controls the proportional valve to change fuel gas flux so as to correspondingly adjust fire change, the water outlet temperature can return to a temperature range set by a user, automatic constant temperature adjustment is realized, the change of water temperature can also be adjusted through the air distribution assembly, the operation number of the fuel gas nozzles is changed through the air distribution assembly, the operation number of the fire burner is changed, the lowest temperature of the output hot water can be set to be lower through matching with the adjustment of the proportional valve to the fuel gas flux, the temperature adjustment range of the hot water is larger, multi-stage adjustment power is realized, and the water temperature measuring device is convenient to use.

According to some embodiments of the present utility model, the gas distribution assembly includes a gas distribution housing and a first switch valve, the gas distribution housing is provided with a main channel, a gas distribution cavity, a secondary channel and a gas outlet hole, the gas inlet end of the main channel is in butt joint with the proportional valve, the main channel is in communication with the gas distribution cavity, a partition is provided in the secondary channel to partition the secondary channel into a first channel section and a second channel section, the gas outlet hole is provided with a plurality of gas nozzles corresponding to the gas nozzles, each gas nozzle is connected to the corresponding gas outlet hole, part of the gas outlet holes in the plurality of gas outlet holes are in communication with the first channel section, the rest of the gas outlet holes are in communication with the second channel section, the gas distribution cavity can be respectively in communication with the first channel section and the second channel section, and the first switch valve is provided corresponding to the gas distribution cavity, and can control on-off between the gas distribution cavity and the first channel section and/or between the gas distribution cavity and the second channel section.

According to some embodiments of the utility model, the first switching valve is a solenoid valve and is capable of controlling the on-off between the gas-dividing chamber and the second channel section.

According to some embodiments of the utility model, the plurality of air outlet holes are arranged at intervals along the axial direction of the auxiliary channel, and the separator can move along the auxiliary channel to change positions so as to change the communication quantity of the air outlet holes corresponding to the first channel section and the second channel section.

According to some embodiments of the utility model, the gas distribution assembly further comprises a driver provided to the gas distribution housing and drivingly connected to the partition for driving the partition to move.

According to some embodiments of the utility model, the main channel is communicated with a pressure measuring channel, the gas distributing shell is provided with a pressure measuring piece, the pressure measuring piece is arranged corresponding to the pressure measuring channel and is electrically connected with the control module, and the pressure measuring piece can detect the air pressure condition of the pressure measuring channel and feed back an electric signal to the control module.

According to some embodiments of the utility model, the water flow pipeline is provided with an overheat protection temperature controller and/or an antifreezing temperature controller.

According to some embodiments of the present utility model, the water flow pipeline is provided with a second switch valve and a second water outlet connector, the first water outlet connector and the second water outlet connector are respectively arranged corresponding to the inner side and the outer side of the vehicle, and the second switch valve is arranged corresponding to the second water outlet connector and is used for controlling the opening and closing of the second water outlet connector.

According to some embodiments of the utility model, the water flow pipeline comprises a hot water pipe, a first three-way joint, a second three-way joint and a safety valve, wherein the hot water pipe is connected with the combustion chamber, the end part of the hot water pipe is connected with one end of the first three-way joint, the other two ends of the first three-way joint are respectively connected with the second three-way joint and the safety valve, one end of the second three-way joint is connected with the first water outlet joint, and the other end of the second three-way joint is connected with the second water outlet joint through the second switch valve.

According to some embodiments of the utility model, the vehicle-mounted water heater further comprises a main housing and a door body, wherein the main housing is provided with an inner cavity, the front side of the inner cavity is of an opening structure, the door body is rotatably connected to the front side of the main housing and can shield an opening of the inner cavity, the first water outlet connector is arranged on the rear side of the main housing and penetrates through the rear side wall of the main housing so as to extend out of the inner cavity, and the second water outlet connector is arranged on the front side of the main housing and corresponds to the opening of the inner cavity.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic diagram of a vehicle-mounted water heater according to an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of the on-vehicle water heater of FIG. 1;

FIG. 3 is a schematic view of a portion of the on-vehicle water heater of FIG. 1;

FIG. 4 is a schematic view of the vehicle-mounted water heater of FIG. 3 from another perspective;

FIG. 5 is a schematic view of a portion of the air intake mechanism of FIG. 3;

fig. 6 is a schematic cross-sectional view of the gas-distributing casing of fig. 5.

Reference numerals:

a combustion chamber 110, a smoke exhaust 120;

Air inlet mechanism 200, main channel 201, air-separating cavity 202, auxiliary channel 203, first channel section 204, second channel section 205, air outlet 206, pressure measuring channel 207, air inlet joint 210, proportional valve 220, air-separating component 230, air-separating shell 231, first switch valve 232, separating piece 233, pressure measuring piece 240;

The water flow pipeline 300, the water inlet connector 310, the water flow sensor 311, the first water outlet connector 320, the second water outlet connector 330, the first temperature probe 340, the second temperature probe 350, the second switch valve 360, the hot water pipe 370, the first three-way connector 371, the second three-way connector 372 and the safety valve 380;

a control module 400;

A main housing 510, an inner cavity 511, and a door 520.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that if an orientation or positional relationship such as upper, lower, front, rear, left, right, etc. is referred to in the description of the present utility model, it is merely for convenience of description and simplification of the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, if a number, greater than, less than, exceeding, above, below, within, etc., words are present, wherein the meaning of a number is one or more, and the meaning of a number is two or more, greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number.

The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1, 2, 3 and 4, an on-vehicle water heater includes a heating system including a combustion chamber 110, an air intake mechanism 200, a water flow line 300 and a control module 400, a plurality of fire-exhaust burners (not shown) are provided at a lower side of the combustion chamber 110, the air intake mechanism 200 includes an air intake joint 210, a proportional valve 220 and a gas distribution assembly 230, the proportional valve 220 is respectively connected with the air intake joint 210 and the gas distribution assembly 230 for controlling a gas flux delivered to the gas distribution assembly 230, the gas distribution assembly 230 is provided with a plurality of gas nozzles (not shown), the plurality of gas nozzles are in one-to-one correspondence with the plurality of fire-exhaust burners, the gas distribution assembly 230 is capable of changing an operation number of the gas nozzles, the water flow pipeline 300 is connected to the combustion chamber 110, the water flow pipeline 300 is provided with a water inlet joint 310 and a first water outlet joint 320, one end of the water flow pipeline 300 opposite to the water inlet joint 310 is provided with a first temperature measuring probe 340 for detecting water inlet temperature, one end of the water flow pipeline 300 opposite to the first water outlet joint 320 is provided with a second temperature measuring probe 350 for detecting water outlet temperature, the water inlet joint 310 is provided with a water flow sensor 311 for detecting water flow, and the control module 400 is respectively electrically connected with the proportional valve 220, the gas distribution assembly 230, the first temperature measuring probe 340, the second temperature measuring probe 350 and the water flow sensor 311, and the first temperature measuring probe 340, the second temperature measuring probe 350 and the water flow sensor 311 can feed back electric signals to the control module 400.

It will be appreciated that, as shown in fig. 1, 2, 3 and 4, in use, water is input into the water flow pipeline 300 through the water inlet connector 310, gas is input into the air inlet mechanism 200 through the air inlet connector 210, then the gas is conveyed to the gas distribution component 230 through the proportional valve 220, the proportional valve 220 is used for controlling the flux of the gas conveyed to the gas distribution component 230, the gas in the gas distribution component 230 is output to the corresponding fire grate burner through the gas nozzle thereon, the side part of the combustion chamber 110 is connected with the ignition component (not shown in the drawing), the gas output from the fire grate burner is ignited by the ignition component to realize combustion heating, the upper part of the combustion chamber 110 is provided with the heat exchanger (not shown in the drawing), the water flow pipeline 300 is connected with the heat exchanger of the combustion chamber 110, and the water flowing through the combustion chamber 110 in the water flow pipeline 300 is heated by the combustion heating of the fire grate burner and the heat exchange of the heat exchanger. The first temperature measurement probe 340 and the second temperature measurement probe 350 respectively detect the water inlet and outlet temperature of the water flow pipeline 300, the water flow sensor 311 detects the water flow, when the water inlet temperature, the water flow or the water outlet temperature have fluctuation change, the first temperature measurement probe 340, the second temperature measurement probe 350 and the water flow sensor 311 feed back electric signals to the control module 400 according to the detection conditions, the control module 400 correspondingly controls the proportional valve 220 to act, the gas flux conveyed to the gas distribution assembly 230 is changed, the corresponding regulation firepower change is carried out, the water outlet temperature can return to the temperature range set by a user, automatic constant temperature regulation is realized, the water temperature change can be regulated through the gas distribution assembly 230, the operation quantity of the gas nozzles is changed through the control of the gas distribution assembly 230, for example, five gas distribution combustors are arranged in the embodiment, correspondingly, the gas distribution assembly 230 can enable the five gas nozzles to all perform combustion heating, the gas distribution assembly 230 can also enable the part of the five gas nozzles to perform gas injection, the rest gas distribution assembly is closed, the five gas distribution combustors can only perform the gas distribution assembly, the gas distribution assembly is matched with the multistage combustion heating mode, the water heater has the lowest temperature change, the temperature change, compared with the water temperature change, the water temperature change can be realized, the regulation mode is realized, and the water temperature change is realized, and the regulation is realized.

In practical applications, the specific structures of the heating system, the control module 400, the proportional valve 220, the first temperature measuring probe 340, the second temperature measuring probe 350, and the water flow sensor 311 may be set according to practical needs, and the components are known to those skilled in the art, so they will not be described in detail herein.

In some embodiments, the gas distribution assembly 230 includes a gas distribution housing 231 and a first switch valve 232, where the gas distribution housing 231 is provided with a main channel 201, a gas distribution cavity 202, a secondary channel 203 and a gas outlet hole 206, an air inlet end of the main channel 201 is in butt joint with the proportional valve 220, the main channel 201 is in communication with the gas distribution cavity 202, a partition 233 is provided in the secondary channel 203 to partition the secondary channel 203 into a first channel section 204 and a second channel section 205, the gas outlet holes 206 are provided in a plurality corresponding to gas nozzles, each gas nozzle is connected to a corresponding gas outlet hole 206, part of the gas outlet holes 206 in the plurality of gas outlet holes 206 are in communication with the first channel section 204, the rest of the gas outlet holes 206 are in communication with the second channel section 205, the gas distribution cavity 202 can be in communication with the first channel section 204 and the second channel section 205, the first switch valve 232 is provided corresponding to the gas distribution cavity 202, and the on-off between the gas distribution cavity 202 and the first channel section 204 and/or between the gas distribution cavity 202 and the second channel section 205 can be controlled.

It will be appreciated that, as shown in fig. 5 and 6, the left end of the main channel 201 is an air inlet end, which is abutted with the proportional valve 220 to input fuel gas, the gas separation chamber 202 is provided at the right end of the main channel 201 and communicates with the main channel 201, the first switch valve 232 is provided at the front side of the gas separation housing 231 and is provided corresponding to the gas separation chamber 202, the sub-channel 203 extends in the front-rear direction, the partition 233 is provided in the sub-channel 203 to partition the sub-channel 203 into a first channel section 204 and a second channel section 205, five air outlet holes 206 are provided, two of the air outlet holes 206 communicate with the first channel section 204, the remaining three air outlet holes 206 communicate with the second channel section 205, the right side of the gas separation chamber 202 communicates with the first channel section 204, and the rear side communicates with the second channel section 205. When the gas-distributing device is used, the first switch valve 232 controls the on-off of the gas-distributing cavity 202 and the first channel section 204 and/or the gas-distributing cavity 202 and the second channel section 205, when the gas-distributing cavity 202 is communicated with the first channel section 204 and is disconnected from the second channel section 205, the two gas outlets 206 can output gas to two corresponding gas nozzles, the two fire-exhaust burners operate, when the gas-distributing cavity 202 is disconnected from the first channel section 204 and is communicated with the second channel section 205, the three gas outlets 206 can output gas to three corresponding gas nozzles, the three fire-exhaust burners operate, when the gas-distributing cavity 202 is communicated with the first channel section 204 and the second channel section 205, the five gas outlets 206 can output gas to five corresponding gas nozzles, and the five fire-exhaust burners operate.

In practical application, the first switch valve 232 may be a ball valve, the gas-dividing chamber 202 may be a valve cavity for accommodating a valve core of the ball valve, or the first switch valve 232 may be other switch valves or stop valves, and the number of the air outlet holes 206 may not be limited to the above structure, for example, the air outlet holes 206 may be one air outlet hole communicating with the first channel section 204, and the other four air outlet holes communicating with the second channel section 205, which may be set correspondingly according to practical requirements.

Specifically, the first switching valve 232 is a solenoid valve and is capable of controlling the on-off between the gas separation chamber 202 and the second channel segment 205.

It can be understood that, as shown in fig. 5 and 6, the first switch valve 232 is an electromagnetic valve, and the plug portion thereof can block the communication port between the gas-dividing cavity 202 and the second channel section 205, and the gas-dividing cavity 202 is communicated with the first channel section 204, so that the operation number of the gas nozzles is changed by controlling the on-off state between the gas-dividing cavity 202 and the second channel section 205, and the gas-dividing nozzle is convenient to use.

Further, the plurality of air outlet holes 206 are arranged at intervals along the axial direction of the sub-passage 203, and the partition 233 is movable along the sub-passage 203 to change the position so as to be able to change the number of communication of the corresponding air outlet holes 206 of the first passage section 204 and the second passage section 205.

It will be appreciated that, as shown in fig. 5 and 6, the five air outlet holes 206 are arranged at intervals along the front-rear direction, in this embodiment, the partition 233 is shown in a fixed arrangement, but in practical application, the partition 233 may also be configured to be able to move along the secondary channel 203 to change the position, in use, by moving the partition 233 forward and backward in the secondary channel 203, the number of the air outlet holes 206 corresponding to the first channel section 204 and the second channel section 205 can be changed, for example, the partition 233 moves forward, so that the first channel section 204 only communicates with one air outlet hole 206, and the gas distribution assembly 230 operates as one gas nozzle at the minimum fire, and the partition 233 moves backward, so that the gas distribution assembly 230 operates as three gas nozzles at the minimum fire, thereby realizing the adjustment of the minimum heating power and improving the adaptability, and, compared with the case where the partition 233 is in a fixed arrangement, the partition 233 is configured to be able to move along the secondary channel 203, thereby facilitating the improvement of the adjustable gear.

Further, the gas distribution assembly 230 further comprises a driver (not shown) provided on the gas distribution housing 231 and drivingly connected to the partition 233 for driving the partition 233 to move.

It can be understood that the driver may be a motor, and the separator 233 is driven to move back and forth by a rack-and-pinion transmission structure or a screw transmission structure, and the driver is electrically connected with the control module 400, and when in use, the control module 400 can correspondingly control the action of the driver according to the detection conditions of the first temperature probe 340, the second temperature probe 350 or the water flow sensor 311, thereby realizing automatic adjustment. In practical application, besides the above structure, the separator 233 can also be manually moved to adjust its position, and the driver can also be an electric push rod, which is connected with the separator 233 by a connecting member to drive the separator to move along the front-rear direction, and can be set accordingly according to practical use requirements.

In some embodiments, the main channel 201 is communicated with the pressure measuring channel 207, the pressure measuring piece 240 is disposed on the air distributing housing 231, and the pressure measuring piece 240 is disposed corresponding to the pressure measuring channel 207 and electrically connected to the control module 400, and the pressure measuring piece 240 can detect the air pressure condition of the pressure measuring channel 207 and feed back an electric signal to the control module 400.

It can be understood that, as shown in fig. 2 and fig. 5, the front side of the main channel 201 is communicated with the pressure measuring channel 207, the pressure measuring part 240 is provided to detect the air pressure condition of the pressure measuring channel 207 and feed back an electric signal to the control module 400, the control module 400 can correspondingly control the proportional valve 220 to change the opening according to the air pressure condition of the main channel 201 so as to adjust the air flux, or when the air inlet pressure is too high or too low, the control module 400 controls the corresponding prompting component to send a prompt to the user, such as displaying the air pressure condition, sending a prompt sound to prompt the air pressure condition, etc., so that the user can conveniently learn the use condition of the air. In practice, the pressure measuring member 240 may include an air pressure sensor, and its specific structure may be set according to the actual use requirement, and since its specific construction and operation principle are known to those skilled in the art, it will not be described in detail herein.

In some embodiments, the water flow line 300 is provided with an overheat protection temperature controller and/or an anti-freeze temperature controller (not shown). It is understood that the overheat protection temperature controller is mainly used for preventing the internal temperature of the water heater from being too high and preventing dangerous situations caused by pressure rise. When the internal temperature of the water heater exceeds the safety limit value, the overheat protection temperature controller can be automatically opened to release hot water or steam so as to reduce the internal pressure and ensure the safe operation of the water heater, and has the functions of reducing the pressure of the water heater and preventing explosion.

In practical application, the overheat protection temperature controller and the antifreezing temperature controller can be set correspondingly according to practical use requirements, and the specific constitution and the working principle of the overheat protection temperature controller and the antifreezing temperature controller are known to those of ordinary skill in the art, so the overheat protection temperature controller and the antifreezing temperature controller are not described in detail herein.

In some embodiments, the water flow pipeline 300 is provided with a second switch valve 360 and a second water outlet connector 330, the first water outlet connector 320 and the second water outlet connector 330 are respectively arranged corresponding to the vehicle inner side and the vehicle outer side, and the second switch valve 360 is arranged corresponding to the second water outlet connector 330 and is used for controlling the opening and closing of the second water outlet connector 330.

It can be understood that, as shown in fig. 2 and 3, by providing the first water outlet connector 320 and the second water outlet connector 330, the first water outlet connector 320 corresponds to water supply on the inner side of the vehicle, the second water outlet connector 330 corresponds to water supply on the outer side of the vehicle, and the second water outlet connector 330 is controlled to be opened or closed by the second switch valve 360, so that the hot water use requirement of a user on the outer side of the vehicle is met, and the use is convenient. In practical application, the second switch valve 360 may be a ball valve or an electromagnetic valve, in this embodiment, the second switch valve 360 is an electromagnetic valve, and is electrically connected to the control module 400, and a user may control the on/off of the second switch valve 360 through the control module 400, and specifically may be set correspondingly according to practical use requirements.

Specifically, the water flow pipeline 300 includes a hot water pipe 370, a first three-way joint 371, a second three-way joint 372 and a safety valve 380, the hot water pipe 370 is connected with the combustion chamber 110, an end of the hot water pipe 370 is connected with one end of the first three-way joint 371, the other two ends of the first three-way joint 371 are respectively connected with the second three-way joint 372 and the safety valve 380, one end of the second three-way joint 372 is connected with the first water outlet joint 320, and the other end of the second three-way joint 372 is connected with the second water outlet joint 330 through the second switch valve 360.

It can be understood that, as shown in fig. 2 and 3, the hot water heated by the water flow pipeline 300 through the combustion chamber 110 is delivered through the hot water pipe 370, the hot water pipe 370 is connected with the first three-way joint 371, the upper end of the first three-way joint 371 is connected with the safety valve 380, and the safety valve 380 can release excessive pressure when the pressure in the hot water pipe 370 is higher so as to avoid accidents such as pipe explosion caused by the excessive pressure, the lower end of the first three-way joint 371 is connected with the second three-way joint 372 through a pipe body, the rear end of the second three-way joint 372 is connected with the first water outlet joint 320 through a pipe body, the front end of the second three-way joint 372 is connected with the second water outlet joint 330 through the pipe body, and the front end of the second three-way joint 371 is connected with the second water outlet joint 330 through the second switch valve 360, so that the pipeline arrangement of front and back water outlet is realized.

In some embodiments, the vehicle-mounted water heater further includes a main housing 510 and a door 520, the main housing 510 has an inner cavity 511, the front side of the inner cavity 511 is of an opening structure, the door 520 is rotatably connected to the front side of the main housing 510 and can shield the opening of the inner cavity 511, the first water outlet connector 320 is disposed at the rear side of the main housing 510 and penetrates through the rear side wall of the main housing 510 to extend out of the inner cavity 511, and the second water outlet connector 330 is disposed at the front side of the main housing 510 and corresponds to the opening of the inner cavity 511.

It will be appreciated that, as shown in fig. 1, 2 and 3, the main housing 510 is provided with an inner cavity 511 with an opening at the front side, the heating system is arranged in the inner cavity 511 and comprises a smoke discharging device 120, the smoke discharging device 120 is arranged at the upper side of the combustion chamber 110 and is used for discharging combustion exhaust gas in the combustion chamber 110, a smoke discharging pipe is arranged to penetrate through the door 520 and extend out of the main housing 510, a first water outlet connector 320 is arranged to penetrate through the rear side wall part of the main housing 510 and extend out of the inner cavity 511, and a second water outlet connector 330 is arranged corresponding to the opening of the inner cavity 511. When the automobile is used, the rear side of the main shell 510 corresponds to one side in an automobile, the front side of the main shell 510 corresponds to one side outside the automobile, when hot water is not needed outside the automobile, the door 520 is in a closed state, the door 520 shields the opening of the inner cavity 511 and also shields the second water outlet connector 330, foreign matters are prevented from entering the inner cavity 511 and the second water outlet connector 330, when hot water is needed outside the automobile, the door 520 can be opened in a rotating mode, shielding of the opening of the inner cavity 511 is relieved, the second water outlet connector 330 can be exposed through the opening of the inner cavity 511, a user can connect the pipe body to the second water outlet connector 330, then the second water outlet connector 330 is controlled to be opened and closed through the second switch valve 360, so that the opening and closing control of hot water supply outside the automobile is realized, and the automobile is convenient to use.

Further, the front side of the main housing 510 is provided with a face frame (not shown in the figure), the opening of the inner cavity 511 is provided with the face frame, the door 520 is rotatably connected to the face frame, a baffle (not shown in the figure) is arranged at the opening of the inner cavity of the face frame, the second water outlet connector 330 penetrates through the baffle and is exposed at the opening of the inner cavity 511, the baffle can shield the second switch valve 360 along the front-back direction, and the baffle is arranged to shield the second switch valve 360 along the front-back direction, so as to protect the second switch valve 360 and avoid personnel from touching by mistake.

In practical application, the main housing 510 may be a split type structure or an integral type structure, and the specific structures of the main housing 510 and the door 520 may be set according to the practical needs, which is not limited herein.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims (10)

1. An on-vehicle water heater, characterized by comprising:

The heating system comprises a combustion chamber, wherein a plurality of fire row combustors are arranged on the lower side of the combustion chamber;

The air inlet mechanism comprises an air inlet joint, a proportional valve and an air distribution assembly, wherein the proportional valve is respectively connected with the air inlet joint and the air distribution assembly and is used for controlling the gas flux conveyed to the air distribution assembly, the air distribution assembly is provided with a plurality of gas nozzles, the plurality of gas nozzles correspond to the plurality of fire-exhaust burners one by one, and the air distribution assembly can change the running number of the gas nozzles;

The water flow pipeline is connected to the combustion chamber and is provided with a water inlet joint and a first water outlet joint, one end of the water flow pipeline, which is opposite to the water inlet joint, is provided with a first temperature measuring probe for detecting water inlet temperature, one end of the water flow pipeline, which is opposite to the first water outlet joint, is provided with a second temperature measuring probe for detecting water outlet temperature, and the water inlet joint is provided with a water flow sensor for detecting water flow;

The control module is respectively and electrically connected with the proportional valve, the gas distribution assembly, the first temperature measuring probe, the second temperature measuring probe and the water flow sensor, and the first temperature measuring probe, the second temperature measuring probe and the water flow sensor can feed back electric signals to the control module.

2. The vehicle-mounted water heater according to claim 1, wherein the air distribution assembly comprises an air distribution shell and a first switch valve, the air distribution shell is provided with a main channel, an air distribution cavity, an auxiliary channel and an air outlet hole, the air inlet end of the main channel is in butt joint with the proportional valve, the main channel is communicated with the air distribution cavity, a partition piece is arranged in the auxiliary channel so as to divide the auxiliary channel into a first channel section and a second channel section, the air outlet hole is provided with a plurality of air outlets corresponding to the gas nozzles, each gas nozzle is connected to the corresponding air outlet hole, part of the air outlet holes in the plurality of air outlet holes are communicated with the first channel section, the rest of the air outlet holes are communicated with the second channel section, the air distribution cavity is respectively communicated with the first channel section and the second channel section, and the first switch valve is arranged corresponding to the air distribution cavity and can control the on-off state of the air distribution cavity and the first channel section and/or the air distribution cavity and/or the second channel section.

3. The on-vehicle water heater according to claim 2, wherein the first switching valve is a solenoid valve and is capable of controlling on-off between the gas-dividing chamber and the second passage section.

4. The on-vehicle water heater according to claim 2, wherein a plurality of the air outlet holes are arranged at intervals in the axial direction of the sub-passage, and the partition member is movable along the sub-passage to change a position so as to be able to change the number of communication of the air outlet holes corresponding to the first passage section and the second passage section.

5. The on-board water heater of claim 4, wherein the air distribution assembly further comprises a driver disposed in the air distribution housing and drivingly connected to the divider for driving movement of the divider.

6. The vehicle-mounted water heater according to claim 2, wherein the main channel is communicated with a pressure measuring channel, the gas distribution shell is provided with a pressure measuring piece, the pressure measuring piece is arranged corresponding to the pressure measuring channel and is electrically connected with the control module, and the pressure measuring piece can detect the air pressure condition of the pressure measuring channel and feed back an electric signal to the control module.

7. The vehicle-mounted water heater according to claim 1, wherein an overheat protection temperature controller and/or an antifreezing temperature controller are/is arranged on the water flow pipeline.

8. The vehicle-mounted water heater according to claim 1, wherein the water flow pipeline is provided with a second switch valve and a second water outlet connector, the first water outlet connector and the second water outlet connector are respectively distributed corresponding to the inner side and the outer side of the vehicle, and the second switch valve is arranged corresponding to the second water outlet connector and used for controlling the opening and closing of the second water outlet connector.

9. The vehicle-mounted water heater according to claim 8, wherein the water flow pipeline comprises a hot water pipe, a first three-way joint, a second three-way joint and a safety valve, the hot water pipe is connected with the combustion chamber, the end part of the hot water pipe is connected with one end of the first three-way joint, the other two ends of the first three-way joint are respectively connected with the second three-way joint and the safety valve, one end of the second three-way joint is connected with the first water outlet joint, and the other end of the second three-way joint is connected with the second water outlet joint through the second switch valve.

10. The vehicle-mounted water heater according to claim 8, further comprising a main housing and a door body, wherein the main housing has an inner cavity, a front side of the inner cavity is of an opening structure, the door body is rotatably connected to the front side of the main housing and can shield an opening of the inner cavity, the first water outlet connector is arranged on the rear side of the main housing and penetrates through a rear side wall portion of the main housing so as to extend out of the inner cavity, and the second water outlet connector is arranged on the front side of the main housing and corresponds to the opening of the inner cavity.