Vehicle air conditioner and control method thereof

Abstract

The application provides a vehicle air conditioner and a control method thereof. The vehicle air conditioner comprises a compressor, an outside heat exchanger, an inside heat exchanger, a first throttling device, a water receiving part and a heat exchange terminal. The compressor, the outside heat exchanger, the first throttling device and the inside heat exchanger can be connected to form a main refrigerant circulation loop. The water receiving part can receive condensed water generated by the inside heat exchanger. The vehicle air conditioner further comprises a first pipeline. One end of the first pipeline is in communication with the inside of the water receiving part, and the other end of the first pipeline is in communication with the heat exchange terminal to cool or heat the user. The water receiving part is a closed container which is relatively closed to the outside. The water in the water receiving part is not in communication with the outside environment. According to the application, the heat exchange between the outside air and the condensed water is effectively isolated, the heat exchange influence on the inlet air or outlet air of the inside heat exchanger is avoided, the invalid heat exchange with the outside environment is reduced, the inside load of the vehicle is not increased, the performance and energy efficiency are effectively improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of air conditioners, and particularly relates to a vehicle air conditioner and a control method thereof. BACKGROUND

[0002] The existing top-mounted integrated vehicle air conditioner has a compact structure, and a drainage groove in an evaporative cavity is directly connected with an external environment. When an internal fan is turned on, a negative pressure cavity is formed in the evaporative cavity, external air enters the evaporative cavity through the drainage groove, and the air and return air after passing through an evaporator are blown out from an internal air outlet through an evaporative fan. During air conditioning cooling, the temperature of the blown-out air is increased, and during air conditioning heating, the temperature of the blown-out air is decreased, which increases the load in the vehicle, reduces performance and energy efficiency, and reduces user experience. Meanwhile, the condensate water is directly discharged, resulting in waste of cooling capacity.

[0003] The existing vehicle air conditioner also has the problems of a large space, a large window, limited battery power, limited space size, and a long air supply distance, which results in a poor user temperature feeling.

[0004] The vehicle air conditioner in the prior art has the technical problems that the temperature of the blown-out air is increased during air conditioning cooling and the temperature of the blown-out air is decreased during air conditioning heating due to the direct connection of the drainage groove in the evaporative cavity with the external environment, which increases the load in the vehicle, reduces performance and energy efficiency, and the like. Therefore, the present application provides a vehicle air conditioner and a control method thereof. SUMMARY

[0005] Therefore, the present application aims to overcome the defects of the vehicle air conditioner in the prior art that the temperature of the blown-out air is increased during air conditioning cooling and the temperature of the blown-out air is decreased during air conditioning heating due to the direct connection of the drainage groove in the evaporative cavity with the external environment, which increases the load in the vehicle, reduces performance and energy efficiency, and the like, so as to provide a vehicle air conditioner and a control method thereof.

[0006] The present application provides a vehicle air conditioner, which comprises:

[0007] A compressor, an external heat exchanger, an internal heat exchanger, a first throttling device, a water receiving part, and a heat exchange terminal, the compressor, the external heat exchanger, the first throttling device, and the internal heat exchanger can be connected to form a main refrigerant circulation loop, the water receiving part can receive condensate water generated by the internal heat exchanger, the vehicle air conditioner further comprises a first pipeline, one end of the first pipeline is in communication with the inside of the water receiving part, and the other end of the first pipeline is in communication with the heat exchange terminal so as to cool or heat a user, the water receiving part is a closed container that is relatively closed with respect to the external environment, and the water in the inside of the water receiving part is not in communication with the external environment.

[0008] In some embodiments, a fourth heat exchanger, a second pipeline and a third pipeline are further included, one end of the second pipeline is in communication with one end of the vehicle interior heat exchanger, the other end of the second pipeline is in communication with a pipe section between the first throttling device and the vehicle exterior heat exchanger, the fourth heat exchanger is arranged on the second pipeline, and a second throttling device is further arranged on the second pipeline;

[0009] One end of the third pipeline passes through the fourth heat exchanger, and the other end of the third pipeline passes through the heat exchange terminal, and the cold carrier flowing in the third pipeline can exchange heat with the refrigerant flowing in the second pipeline at the fourth heat exchanger.

[0010] In some embodiments, a container is further included, and the other end of the first pipeline is in communication with the interior of the container after passing through the heat exchange terminal.

[0011] In some embodiments, the other end of the third pipeline is in communication with the interior of the container after passing through the heat exchange terminal, one end of the third pipeline is in communication with the interior of the container after passing through the fourth heat exchanger, and a pump is arranged on the third pipeline.

[0012] In some embodiments, the container is further provided with a drain pipe; and / or,

[0013] The fourth heat exchanger is a plate heat exchanger; and / or, the heat exchange terminal is a heat exchange pad that can be placed on a bed or a seat.

[0014] In some embodiments, the cold carrier is water, the container is a water tank, and the pump is a water pump.

[0015] In some embodiments, a fourth temperature sensor is arranged at one end of the fourth heat exchanger connected with the second pipeline, a second temperature sensor is arranged at the other end of the fourth heat exchanger connected with the second pipeline, a third temperature sensor is arranged at one end of the fourth heat exchanger connected with the third pipeline, and a first temperature sensor is arranged at the other end of the fourth heat exchanger connected with the third pipeline.

[0016] In some embodiments, a four-way valve is further included, the four-way valve includes a first end, a second end, a third end and a fourth end, the first end is in communication with the exhaust end of the compressor, the second end is in communication with the vehicle exterior heat exchanger, the third end is in communication with the suction end of the compressor, and the fourth end is in communication with the vehicle interior heat exchanger.

[0017] In some embodiments, the vehicle air conditioner is a parking air conditioner.

[0018] The application further provides a control method of the vehicle air conditioner as described in any one of the preceding embodiments, which comprises:

[0019] detecting a running mode and an outdoor ambient temperature T;

[0020] judging the running mode as a cooling mode or a heating mode and judging a relationship between T and T1, T2, T3 and T4, wherein T1, T2, T3 and T4 are all preset temperatures and T3

[0021] controlling, when comprising a first throttling device, a second throttling device and a pump, opening or closing of the first throttling device and the second throttling device and opening or closing of the pump according to different running modes and the relationship between T and T1, T2, T3 and T4.

[0022] In some embodiments, the controlling step, when the running mode is the cooling mode and T≥T2, controls the first throttling device to open, controls the second throttling device to open, controls the pump to open, cools the user through the heat exchange terminal by the carrier refrigerant after the carrier refrigerant exchanges heat with the refrigerant through the fourth heat exchanger, and also cools the user through the condensed water in the water receiving part through the heat exchange terminal and cools the vehicle interior through the vehicle interior heat exchanger;

[0023] When the running mode is the cooling mode and T

[0024] When the running mode is the cooling mode and T1≤T

[0025] In some embodiments, the controlling step, when the running mode is the heating mode and T

[0026] When the running mode is the heating mode and T≥T4, controls the first throttling device to open, controls the second throttling device to close, controls the pump to close, and heats the vehicle interior through the vehicle interior heat exchanger;

[0027] When the operation mode is the heating mode, and T3≤T4, the first throttling device is controlled to be closed, the second throttling device is controlled to be opened, and the pump is controlled to be opened, the heat transfer between the carrier refrigerant and the refrigerant is carried out through the fourth heat exchanger, and the user is heated through the heat transfer terminal.

[0028] The vehicle air conditioner and the control method thereof have the following beneficial effects:

[0029] The first pipeline and the heat transfer terminal are arranged, the condensed water generated by the in-vehicle heat exchanger in the water collecting part is used to cool the user through the heat transfer terminal, the water collecting part is formed as a closed container, the water in the water collecting part is not communicated with the external environment, the heat exchange between the external air and the condensed water is effectively isolated, the heat exchange influence on the inlet air or the outlet air of the in-vehicle heat exchanger is avoided, the invalid heat exchange with the external environment is reduced, the problem that the outlet air temperature is increased during air conditioning cooling and the outlet air temperature is reduced during heating is solved, the internal load is not increased, the performance and the energy efficiency are effectively improved, the heat transfer effect of the top-mounted integrated stationary air conditioner is improved by 15.7% compared with the conventional top-mounted integrated stationary air conditioner in which the drain groove is directly communicated with the external environment, the condensed water is effectively recycled, the cold energy is reasonably recycled, and the waste heat is utilized, the fourth heat exchanger and the terminal heat exchanger are arranged, the cold energy or the heat energy in the main refrigerant circulation loop is converted to the carrier refrigerant, and the user is directly affected through the heat transfer terminal, the problems such as the air supply distance of the evaporation cavity are avoided, the effect of the body temperature difference caused by the long air supply distance is reduced, the user comfort and the experience are effectively improved, and the heat transfer effect and the body temperature of the top-mounted integrated stationary air conditioner are improved by more than 30% compared with the conventional top-mounted integrated stationary air conditioner in which the air cooling heat exchange is used. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a structural schematic view of the top-mounted integrated stationary air conditioner and the auxiliary heat exchange system of the present application;

[0031] Figure 2 is a system flow path diagram of the vehicle air conditioning system of the present application in the air conditioning cooling + auxiliary heat exchange system cooling mode;

[0032] Figure 3 is a system flow path diagram of the vehicle air conditioning system of the present application in the air conditioning cooling mode;

[0033] Figure 4 is a system flow path diagram of the vehicle air conditioning system of the present application in the auxiliary heat exchange system cooling mode;

[0034] Figure 5 is a system flow path diagram of the vehicle air conditioning system of the present application in the air conditioning heating + auxiliary heat exchange system heating mode;

[0035] Figure 6This is a system flow diagram of the vehicle air conditioning system of the present invention when the air conditioning is used for heating only;

[0036] Figure 7 This is a system flow diagram of the vehicle air conditioning system of the present invention when the auxiliary heat exchange system is heating.

[0037] The reference numerals in the figure are as follows:

[0038] 1. Compressor; 210. External heat exchanger; 220. Internal heat exchanger; 410. First throttling device; 420. Second throttling device; 6. Four-way valve; D. First end; C. Second end; S. Third end; E. Fourth end; 7. Gas-liquid separator; 8. Fourth heat exchanger; 9. Water receiving part; 10. Heat exchange terminal; 11. Pump; 12. Container; 13. Drain pipe; 1410. First temperature sensor; 1420. Second temperature sensor; 1430. Third temperature sensor; 1440. Fourth temperature sensor; 101. First pipeline; 102. Second pipeline; 103. Third pipeline. Detailed Implementation

[0039] like Figures 1-7 As shown, the present invention provides a vehicle air conditioner, which includes:

[0040] The vehicle air conditioning system includes a compressor 1, an external heat exchanger 210, an internal heat exchanger 220, a first throttling device 410, a water receiving part 9, and a heat exchange terminal 10. The compressor 1, the external heat exchanger 210, the first throttling device 410, and the internal heat exchanger 220 can be connected to form a main refrigerant circulation loop. The water receiving part 9 can collect the condensate generated by the internal heat exchanger 220. The vehicle air conditioning system also includes a first pipe 101, one end of which is connected to the interior of the water receiving part 9, and the other end is connected to the heat exchange terminal 10 to provide cooling or heating to the user. The water receiving part 9 is a closed container that is relatively closed to the outside of the vehicle, and the water inside the water receiving part 9 is not connected to the external environment.

[0041] This invention, by setting up a first pipeline and a heat exchange terminal, enables the condensate generated by the vehicle's in-vehicle heat exchanger in the water receiving section to be used for cooling the user through the heat exchange terminal. Furthermore, the water receiving section is designed as a closed container, preventing the water inside from communicating with the external environment. This effectively isolates the heat exchange between the external air and the condensate, preventing any impact on the intake or exhaust air of the in-vehicle heat exchanger. It reduces ineffective heat exchange with the external environment, solving the problem of increased exhaust temperature during cooling and decreased exhaust temperature during heating. This does not increase the load inside the vehicle, effectively improving performance and energy efficiency. Compared to traditional roof-mounted integrated parking air conditioners where the drainage channel is directly connected to the external environment, this invention improves the heat exchange effect by 15.7%. This invention also effectively recycles and reuses the condensate, rationally recovering and utilizing its cooling capacity, thus achieving waste heat utilization.

[0042] The compressor 1 is connected to the D end of the four-way valve 6, the C end of the four-way valve 6 is connected to the vehicle outside heat exchanger 210, the other end of the vehicle outside heat exchanger 210 is connected to the first electronic expansion valve (first throttling device 410) and the second electronic expansion valve (second throttling device 420), the other end of the first electronic expansion valve is connected to the vehicle inside heat exchanger 220, the other end of the vehicle inside heat exchanger 220 is connected to the E end of the four-way valve 6, the S end of the four-way valve 6 is connected to one end of the gas-liquid separator 7, the other end of the gas-liquid separator 7 is connected to the suction port of the compressor 1. The other end of the second electronic expansion valve is connected to one end of the refrigerant flow path of the plate heat exchanger (fourth heat exchanger 8), the other end of the refrigerant flow path of the plate heat exchanger is connected to the E end of the four-way valve 6.

[0043] The drain pipe of the water pan (water receiving part 9) is connected to one end of the inlet of the heat exchange terminal 10, one end of the inlet of the heat exchange terminal 10 is connected to one end of the water inlet of the water tank (container 12), the water outlet of the water tank is connected to the water suction port of the pump 11, the water discharge port of the pump 11 is connected to the inlet of the refrigerant flow path of the plate heat exchanger, the outlet of the refrigerant flow path of the plate heat exchanger is connected to the other end of the inlet of the heat exchange terminal 10, the other end of the outlet of the heat exchange terminal 10 is connected to the other end of the water inlet of the water tank, and the water discharge port of the water tank is connected to the outside of the vehicle through the drain pipe 13.

[0044] In some embodiments, a fourth heat exchanger 8, a second pipeline 102 and a third pipeline 103 are further included, one end of the second pipeline 102 is connected to one end of the vehicle inside heat exchanger 220, the other end of the second pipeline 102 is connected to the pipe section between the first throttling device 410 and the vehicle outside heat exchanger 210, the fourth heat exchanger 8 is arranged on the second pipeline 102, and a second throttling device 420 is further arranged on the second pipeline 102;

[0045] One end of the third pipeline 103 passes through the fourth heat exchanger 8, the other end of the third pipeline 103 passes through the heat exchange terminal 10, and the cooling medium flowing in the third pipeline 103 can exchange heat with the refrigerant flowing in the second pipeline 102 at the fourth heat exchanger 8.

[0046] The application can also convert the cold or heat in the main refrigerant circulation loop to the carrier refrigerant through the fourth heat exchanger and the terminal heat exchanger, and directly act on the user through the heat exchange terminal, avoiding the problem of air supply distance of the evaporation cavity, reducing the effect of the body temperature difference caused by the long air supply distance, and effectively improving the user comfort and experience. The heat exchange effect and the body temperature of the traditional top-mounted integrated stationary air conditioner using air cooling are improved by more than 30%. The indoor heat exchanger of the application usually produces cold air or hot air by blowing cold air or hot air to refrigerate or heat the vehicle interior. The refrigeration or heating effect is poor, the refrigeration or heating speed is slow, and the air supply distance is far. The heat exchange terminal of the application directly acts on the user to improve the user experience and comfort.

[0047] In some embodiments, the other end of the first pipeline 101 is in communication with the inside of the container 12 after passing through the heat exchange terminal 10. The application can also recycle the carrier refrigerant (preferably water) and provide the carrier refrigerant for the carrier refrigerant circuit through the setting of the container, and recycle or provide the carrier refrigerant for the heat exchange terminal.

[0048] In some embodiments, the other end of the third pipeline 103 is in communication with the inside of the container 12 after passing through the heat exchange terminal 10, and the one end of the third pipeline 103 is in communication with the inside of the container 12 after passing through the fourth heat exchanger 8. The third pipeline 103 is provided with a pump 11. The application can also connect the heat exchange terminal, the fourth heat exchanger and the container into a carrier refrigerant circuit through the setting of the third pipeline, absorb the cold or heat from the main refrigerant circuit through the fourth heat exchanger, and then send it to the heat exchange terminal to refrigerate or heat the user, thereby improving the user comfort and experience.

[0049] In some embodiments, the container 12 is also provided with a drain pipe 13; and / or,

[0050] The fourth heat exchanger 8 is a plate heat exchanger; and / or, the heat exchange terminal 10 is a heat exchange pad that can be placed on a bunk or a seat. The application can discharge the excess water or water higher than the preset height in the container through the drain pipe, and the fourth heat exchanger is a plate heat exchanger that can enhance the heat exchange efficiency between the carrier refrigerant and the refrigerant; the heat exchange terminal is a heat exchange pad placed on a bunk or a seat, which can directly act on the user to improve the user comfort and experience.

[0051] In some embodiments, the carrier refrigerant is water, the container 12 is a water tank, and the pump 11 is a water pump. The carrier refrigerant of the application is preferably water, the container is preferably a water tank, and the pump is preferably a water pump. Water is used as the carrier refrigerant to effectively exchange heat with the refrigerant.

[0052] In some embodiments, the fourth heat exchanger 8 is provided with a fourth temperature sensor 1440 at one end connected with the second pipeline 102, a second temperature sensor 1420 at the other end connected with the second pipeline 102, a third temperature sensor 1430 at one end connected with the third pipeline 103, and a first temperature sensor 1410 at the other end connected with the third pipeline 103. The four temperature sensors at the four interface ends of the fourth heat exchanger can detect the refrigerant temperatures at the four positions, thereby providing temperature conditions for precise and intelligent control.

[0053] In some embodiments, the vehicle air conditioner further comprises a four-way valve 6, which comprises a first end D, a second end C, a third end S and a fourth end E, the first end D is in communication with the exhaust end of the compressor 1, the second end C is in communication with the vehicle outside heat exchanger 210, the third end S is in communication with the suction end of the compressor 1, and the fourth end E is in communication with the vehicle inside heat exchanger 220. The four-way valve can adjust the operation mode of the main refrigerant circulation loop to be a refrigeration mode or a heating mode, and effectively switch between the two modes.

[0054] In some embodiments, the vehicle air conditioner is a parking air conditioner. The vehicle air conditioner of the present application is a parking air conditioner, which can effectively produce refrigeration or heating in the vehicle when parking, thereby improving user comfort and experience, saving energy and improving energy efficiency. Preferably, it is a top-mounted integrated parking air conditioner and an auxiliary heat exchange system.

[0055] The present application also provides a control method of the vehicle air conditioner as described in any one of the preceding embodiments, which comprises:

[0056] a detection step of detecting the operation mode and the outdoor environment temperature T;

[0057] a judgment step of judging the operation mode to be a refrigeration mode or a heating mode, and judging the relationship between T and T1, T2, T3 and T4, wherein T1, T2, T3 and T4 are all preset temperatures, and T3 < T4 < T1 < T2;

[0058] a control step of controlling the opening or closing of the first throttling device and the second throttling device, and the opening or closing of the pump according to different operation modes and the relationship between T and T1, T2, T3 and T4, when the first throttling device, the second throttling device and the pump are included.

[0059] The application can control the operation mode of the vehicle air conditioner according to the outdoor temperature, and can control the large cooling capacity refrigeration, the medium cooling capacity refrigeration, the small cooling capacity refrigeration, the large heating capacity heating, the medium heating capacity heating or the small heating capacity heating, so that the user can obtain more accurate heat or cooling capacity, and the energy consumption can be reduced and the energy efficiency of the system can be improved while the user comfort (heat comfort or cooling comfort) is met.

[0060] In some embodiments, when the operation mode is the refrigeration mode and T≥T2, the first throttling device is controlled to be opened, the second throttling device is controlled to be opened, the pump is controlled to be opened, the carrier refrigerant is exchanged with the refrigerant through the fourth heat exchanger, and the user is refrigerated through the heat exchange terminal by the carrier refrigerant, and the user is refrigerated by the condensed water in the water receiving part 9 through the heat exchange terminal and the vehicle interior is refrigerated by the vehicle interior heat exchanger;

[0061] When the operation mode is the refrigeration mode and T<T1, the first throttling device is controlled to be opened, the second throttling device is controlled to be closed, the pump is controlled to be closed, the user is refrigerated by the condensed water in the water receiving part 9 through the heat exchange terminal and the vehicle interior is refrigerated by the vehicle interior heat exchanger;

[0062] When the operation mode is the refrigeration mode and T1≤T<T2, the first throttling device is controlled to be closed, the second throttling device is controlled to be opened, the pump is controlled to be opened, the carrier refrigerant is exchanged with the refrigerant through the fourth heat exchanger, and the user is refrigerated through the heat exchange terminal by the carrier refrigerant.

[0063] This is several different control forms of the refrigeration mode of the application, and when T≥T2 (for example, the outdoor temperature is very high in summer), the vehicle interior heat exchanger and the fourth heat exchanger are controlled to be opened, the vehicle interior is refrigerated by the heat exchange terminal and the vehicle interior heat exchanger, the fourth heat exchanger assists the carrier refrigeration heat exchange to act on the heat exchange terminal, and the condensed water assists the heat exchange to act on the heat exchange terminal, which can effectively improve the refrigeration capacity of the heat exchange terminal, thereby maximizing the refrigeration of the user, improving the comfort and reducing the energy consumption; when T<T1 (for example, the outdoor temperature is lower in summer), the vehicle interior heat exchanger is controlled to be opened and the fourth heat exchanger is controlled to be closed, the vehicle interior is refrigerated by the condensed water acting on the heat exchange terminal and the vehicle interior heat exchanger, which can provide appropriate refrigeration capacity, improve the comfort of the user and reduce the energy consumption; when T1≤T<T2 (for example, the outdoor temperature is higher in summer), the vehicle interior heat exchanger is controlled to be closed and the fourth heat exchanger is controlled to be opened, and the vehicle interior is refrigerated only by the heat exchange terminal, which can effectively improve the refrigeration capacity of the heat exchange terminal, improve the comfort of the user and reduce the energy consumption.

[0064] Figure 2The air conditioning refrigeration + auxiliary heat exchange refrigeration system structure schematic diagram of the top-mounted integrated stationary air conditioner is shown, at this time the D end and the C end of the four-way valve 6 are communicated, and the E end and the S end are communicated;

[0065] The high-temperature and high-pressure refrigerant discharged by the compressor 1 enters the vehicle exterior heat exchanger 210 through the D end and the C end of the four-way valve 6, is cooled and released after heat, is divided into two paths, one path flows through the first electronic expansion valve (first throttling device 410) and then enters the vehicle interior heat exchanger 220 to evaporate and absorb heat, and the other path flows through the second electronic expansion valve (second throttling device 420) and then enters the plate heat exchanger (fourth heat exchanger 8) to evaporate and absorb heat, is mixed with the refrigerant that flows through the first electronic expansion valve, enters the vehicle interior heat exchanger 220 to evaporate and absorb heat, and then flows through the E end and the S end of the four-way valve 6 to enter the gas-liquid separator 7, and finally the low-temperature and low-pressure refrigerant enters the compressor 1 to be sucked.

[0066] The cooling agent water discharged from the water pump outlet is released through the plate heat exchanger, enters the heat exchange terminal 10 to absorb heat, enters the water tank, and then returns to the water pump.

[0067] The condensate water generated by the vehicle interior heat exchanger 220 flows into the heat exchange terminal 10 through the water pan to absorb heat, enters the water tank, and when the water level of the water tank exceeds the highest water level warning line, flows to the outside of the vehicle through the drain pipe 13 to be discharged.

[0068] Figure 3 The air conditioning refrigeration system structure schematic diagram of the top-mounted integrated stationary air conditioner is shown, at this time the D end and the C end of the four-way valve 6 are communicated, and the E end and the S end are communicated;

[0069] The high-temperature and high-pressure refrigerant discharged by the compressor 1 enters the vehicle exterior heat exchanger 210 through the D end and the C end of the four-way valve 6, is cooled and released after heat, flows through the first electronic expansion valve and then enters the vehicle interior heat exchanger 220 to evaporate and absorb heat, and then flows through the E end and the S end of the four-way valve 6 to enter the gas-liquid separator 7, and finally the low-temperature and low-pressure refrigerant enters the compressor 1 to be sucked.

[0070] The condensate water generated by the vehicle interior heat exchanger 220 flows into the heat exchange terminal 10 through the water pan to absorb heat, enters the water tank, and when the water level of the water tank exceeds the highest water level warning line, flows to the outside of the vehicle through the drain pipe 13 to be discharged.

[0071] Figure 4 The auxiliary heat exchange refrigeration system structure schematic diagram of the top-mounted integrated stationary air conditioner is shown, at this time the D end and the C end of the four-way valve 6 are communicated, and the E end and the S end are communicated;

[0072] The high-temperature and high-pressure refrigerant discharged by the compressor 1 enters the vehicle exterior heat exchanger 210 through the D end and the C end of the four-way valve 6, is cooled and released after heat, flows through the second electronic expansion valve and then enters the plate heat exchanger to evaporate and absorb heat, and then flows through the E end and the S end of the four-way valve 6 to enter the gas-liquid separator 7, and finally the low-temperature and low-pressure refrigerant enters the compressor 1 to be sucked.

[0073] The refrigerant water discharged from the water pump outlet is discharged into the heat exchanger terminal 10 after heat release through the plate heat exchanger, and then is returned to the water pump after heat absorption.

[0074] In some embodiments, when the operation mode is the heating mode, and T < T3, the first throttling device is controlled to be opened, the second throttling device is controlled to be opened, the pump is controlled to be opened, the refrigerant and the coolant are exchanged through the fourth heat exchanger, and the user is heated through the heat exchanger terminal and the vehicle interior is heated through the vehicle interior heat exchanger.

[0075] When the operation mode is the heating mode, and T ≥ T4, the first throttling device is controlled to be opened, the second throttling device is controlled to be closed, the pump is controlled to be closed, and the vehicle interior is heated through the vehicle interior heat exchanger.

[0076] When the operation mode is the heating mode, and T3 ≤ T < T4, the first throttling device is controlled to be closed, the second throttling device is controlled to be opened, the pump is controlled to be opened, the refrigerant and the coolant are exchanged through the fourth heat exchanger, and the user is heated through the heat exchanger terminal.

[0077] This is several different control forms of the heating mode of the application, which can control the vehicle interior heat exchanger and the fourth heat exchanger to be opened when T < T3 (for example, the outdoor temperature is very low in winter), heat the vehicle interior through the heat exchanger terminal and the vehicle interior heat exchanger, the fourth heat exchanger assists the refrigerant heat exchange to act on the heat exchanger terminal, and the condensate water assists the heat exchange to act on the heat exchanger terminal, which can effectively improve the heating capacity of the heat exchanger terminal, thereby maximizing the heating of the user, improving the comfort, and reducing the energy consumption; when T ≥ T4 (for example, the outdoor temperature is relatively high in winter), the vehicle interior heat exchanger is controlled to be opened, the fourth heat exchanger is controlled to be closed, the vehicle interior is heated through the vehicle interior heat exchanger, which can provide appropriate heating capacity, improve the comfort of the user, and reduce the energy consumption; when T3 ≤ T < T4 (for example, the outdoor temperature is relatively low in winter), the vehicle interior heat exchanger is controlled to be closed, the fourth heat exchanger is controlled to be opened, and the vehicle interior is heated through the heat exchanger terminal, which can effectively improve the heating capacity of the heat exchanger terminal, improve the comfort of the user, and reduce the energy consumption.

[0078] Figure 5 The air conditioning heating + auxiliary heating heat exchange heating system structure schematic diagram of the top-mounted integrated parking air conditioner is shown, at this time, the D end and the E end of the four-way valve 6 are communicated, and the C end and the S end are communicated.

[0079] The high-temperature and high-pressure refrigerant discharged by the compressor 1 is divided into two paths through the D and E ends of the four-way valve 6, one path enters the in-vehicle heat exchanger 220 to be cooled and released, and then flows through the first electronic expansion valve (first throttling device 410) to be throttled, and the other path enters the plate heat exchanger to be cooled and released, and then flows through the second electronic expansion valve (second throttling device 420) to be throttled, and then enters the in-vehicle heat exchanger 220 to be cooled and released, and then mixes with the refrigerant flowing through the first electronic expansion valve to be throttled, enters the out-vehicle heat exchanger 210 to be evaporated and absorbed, and then flows through the C and S ends of the four-way valve 6 to enter the gas-liquid separator 7, and finally the low-temperature and low-pressure refrigerant enters the compressor 1 to be sucked.

[0080] The pump 11 outlet discharged refrigerant water is heated by the plate heat exchanger, and then enters the heat exchange terminal 10 to be released, and then enters the water tank to return to the water pump.

[0081] Figure 6 The air conditioning heating system structure diagram of the top-mounted integrated parking air conditioner is shown, at this time the D end and the E end of the four-way valve 6 are communicated, and the C end and the S end are communicated;

[0082] The high-temperature and high-pressure refrigerant discharged by the compressor 1 is divided into two paths through the D and E ends of the four-way valve 6, one path enters the in-vehicle heat exchanger 220 to be cooled and released, and then flows through the first electronic expansion valve (first throttling device 410) to be throttled, and the other path enters the plate heat exchanger to be cooled and released, and then flows through the second electronic expansion valve (second throttling device 420) to be throttled, and then enters the in-vehicle heat exchanger 220 to be cooled and released, and then mixes with the refrigerant flowing through the first electronic expansion valve to be throttled, enters the out-vehicle heat exchanger 210 to be evaporated and absorbed, and then flows through the C and S ends of the four-way valve 6 to enter the gas-liquid separator 7, and finally the low-temperature and low-pressure refrigerant enters the compressor 1 to be sucked.

[0083] Figure 7 The auxiliary heating and heat exchange heating system structure diagram of the top-mounted integrated parking air conditioner is shown, at this time the D end and the E end of the four-way valve 6 are communicated, and the C end and the S end are communicated;

[0084] The high-temperature and high-pressure refrigerant discharged by the compressor 1 is divided into two paths through the D and E ends of the four-way valve 6, one path enters the in-vehicle heat exchanger 220 to be cooled and released, and then flows through the first electronic expansion valve (first throttling device 410) to be throttled, and the other path enters the plate heat exchanger to be cooled and released, and then flows through the second electronic expansion valve (second throttling device 420) to be throttled, and then enters the in-vehicle heat exchanger 220 to be cooled and released, and then mixes with the refrigerant flowing through the first electronic expansion valve to be throttled, enters the out-vehicle heat exchanger 210 to be evaporated and absorbed, and then flows through the C and S ends of the four-way valve 6 to enter the gas-liquid separator 7, and finally the low-temperature and low-pressure refrigerant enters the compressor 1 to be sucked.

[0085] The pump 11 outlet discharged refrigerant water is heated by the plate heat exchanger, and then enters the heat exchange terminal 10 to be released, and then enters the water tank to return to the water pump.

[0086] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. The above only describes the preferred embodiments of the present application, and is not intended to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A vehicle air conditioner characterized by comprising: The vehicle air conditioner comprises a compressor (1), an outside heat exchanger (210), an inside heat exchanger (220), a first throttling device (410), a water receiving part (9) and a heat exchange terminal (10), the compressor (1), the outside heat exchanger (210), the first throttling device (410) and the inside heat exchanger (220) can be connected to form a main refrigerant circulation loop, the water receiving part (9) can receive condensed water generated by the inside heat exchanger (220), the vehicle air conditioner further comprises a first pipeline (101), one end of the first pipeline (101) is in communication with the inside of the water receiving part (9), the other end of the first pipeline (101) is in communication with the heat exchange terminal (10) so as to cool or heat a user, the water receiving part (9) is a closed container which is relatively closed to the outside, and the water in the water receiving part (9) is not in communication with the outside environment. The vehicle air conditioner further comprises a fourth heat exchanger (8), a second pipeline (102) and a third pipeline (103), one end of the second pipeline (102) is in communication with one end of the inside heat exchanger (220), the other end of the second pipeline (102) is in communication with a pipe section between the first throttling device (410) and the outside heat exchanger (210), the fourth heat exchanger (8) is arranged on the second pipeline (102), and a second throttling device (420) is further arranged on the second pipeline (102). One end of the third pipeline (103) penetrates through the fourth heat exchanger (8), the other end of the third pipeline (103) penetrates through the heat exchange terminal (10), and a cooling carrier flowing in the third pipeline (103) can exchange heat with refrigerant flowing in the second pipeline (102) at the fourth heat exchanger (8).

2. The vehicle air conditioner according to claim 1, further comprising a container (12), and the other end of the first pipeline (101) is in communication with the inside of the container (12) after penetrating through the heat exchange terminal (10).

3. The vehicle air conditioner according to claim 2, wherein the other end of the third pipeline (103) is in communication with the inside of the container (12) after penetrating through the heat exchange terminal (10), one end of the third pipeline (103) is in communication with the inside of the container (12) after penetrating through the fourth heat exchanger (8), and a pump (11) is arranged on the third pipeline (103).

4. The vehicle air conditioner according to claim 3, wherein the container (12) is further provided with a drain pipe (13); and / or, the fourth heat exchanger (8) is a plate heat exchanger; and / or, the heat exchange terminal (10) is a heat exchange pad which can be placed on a bed or a seat.

5. The vehicle air conditioner according to claim 3, wherein the cooling carrier is water, the container (12) is a water tank, and the pump (11) is a water pump.

6. The vehicle air conditioner according to claim 1, ​ ​ ​ ​ ​ ​ The fourth heat exchanger (8) is provided with a fourth temperature sensor (1440) at one end connected with the second pipeline (102), and is provided with a second temperature sensor (1420) at the other end connected with the second pipeline (102), is provided with a third temperature sensor (1430) at one end connected with the third pipeline (103), and is provided with a first temperature sensor (1410) at the other end connected with the third pipeline (103).

7. The vehicle air conditioner according to any one of claims 1 to 6, characterized in that: Further comprising a four-way valve (6), the four-way valve (6) comprising a first end (D), a second end (C), a third end (S) and a fourth end (E), the first end (D) being in communication with the exhaust end of the compressor (1), the second end (C) being in communication with the vehicle external heat exchanger (210), the third end (S) being in communication with the suction end of the compressor (1), and the fourth end (E) being in communication with the vehicle internal heat exchanger (220).

8. The vehicle air conditioner according to any one of claims 1 to 6, characterized in that: The vehicle air conditioner is a parking air conditioner.

9. A control method of the vehicle air conditioner according to any one of claims 1 to 8, characterized in that: Comprising: A detection step of detecting the operation mode and the outdoor environment temperature T; A judgment step of judging the operation mode as a cooling mode or a heating mode, and judging the relationship between T and T1, T2, T3 and T4, wherein T1, T2, T3 and T4 are all preset temperatures, and T3 < T4 < T1 < T2; A control step of, when comprising a first throttling device, a second throttling device and a pump, controlling the opening or closing of the first throttling device and the second throttling device, and controlling the opening or closing of the pump according to different operation modes and the relationship between T and T1, T2, T3 and T4.

10. The control method according to claim 9, characterized in that: In the control step, when the operation mode is a cooling mode, and T ≥ T2, the first throttling device is controlled to be opened, the second throttling device is controlled to be opened, the pump is controlled to be opened, the heat exchange between the heat carrier and the refrigerant is carried out through the fourth heat exchanger, and the user is cooled through the heat carrier at the heat exchange terminal, and the user is also cooled through the condensed water in the water receiving part (9) passing through the heat exchange terminal and the vehicle internal heat exchanger; When the operation mode is a cooling mode, and T < T1, the first throttling device is controlled to be opened, the second throttling device is controlled to be closed, the pump is controlled to be closed, the user is cooled through the condensed water in the water receiving part (9) passing through the heat exchange terminal and the vehicle internal heat exchanger; When the operation mode is a cooling mode, and T1 ≤ T < T2, the first throttling device is controlled to be closed, the second throttling device is controlled to be opened, the pump is controlled to be opened, the heat exchange between the heat carrier and the refrigerant is carried out through the fourth heat exchanger, and the user is cooled through the heat carrier at the heat exchange terminal.

11. The control method according to claim 9, characterized in that: the control step, when the operation mode is the heating mode, and T < T3, controls the first throttling device to be opened, controls the second throttling device to be opened, controls the pump to be opened, and heats the user through the fourth heat exchanger after the heat transfer between the cold carrier and the refrigerant, and through the cold carrier in the heat exchange terminal, while also heating the vehicle interior through the vehicle interior heat exchanger; when the operation mode is the heating mode, and T ≥ T4, controls the first throttling device to be opened, controls the second throttling device to be closed, controls the pump to be closed, and heats the vehicle interior through the vehicle interior heat exchanger; when the operation mode is the heating mode, and T3 ≤ T < T4, controls the first throttling device to be closed, controls the second throttling device to be opened, controls the pump to be opened, and heats the user through the fourth heat exchanger after the heat transfer between the cold carrier and the refrigerant, and through the cold carrier in the heat exchange terminal.

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