CN111762000B - Heat pump air conditioning system, air supply subsystem and method for controlling heat pump air conditioning system - Google Patents

Heat pump air conditioning system, air supply subsystem and method for controlling heat pump air conditioning system Download PDF

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Publication number
CN111762000B
CN111762000B CN202010551911.9A CN202010551911A CN111762000B CN 111762000 B CN111762000 B CN 111762000B CN 202010551911 A CN202010551911 A CN 202010551911A CN 111762000 B CN111762000 B CN 111762000B
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gate
air
controlling
heat pump
air supply
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CN111762000A (en
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候庆林
王振宝
刘金涛
荣晓亮
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Hisense Shandong Air Conditioning Co Ltd
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Hisense Shandong Air Conditioning Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00007—Combined heating, ventilating, or cooling devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00007—Combined heating, ventilating, or cooling devices
    • B60H1/00021—Air flow details of HVAC devices
    • B60H2001/00078—Assembling, manufacturing or layout details
    • B60H2001/00092—Assembling, manufacturing or layout details of air deflecting or air directing means inside the device

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

The invention provides a heat pump air-conditioning system, an air supply subsystem and a method for controlling the heat pump air-conditioning system, wherein the heat pump air-conditioning system comprises: the heat pump air-conditioning subsystem comprises a compressor, an outer side heat exchanger arranged outside a carriage, an inner side heat exchanger arranged in the carriage, a throttling device and a reversing device; the air supply subsystem comprises a shell, a plurality of partition plates, a plurality of gates, an electric heating unit and a fan, wherein the partition plates, the gates, the electric heating unit and the fan are arranged in the shell; and the controller is used for detecting the control instruction of the operation mode, controlling the heat pump air-conditioning subsystem to operate the corresponding operation mode, and controlling the opening and closing states of the plurality of gates to form a target air supply channel corresponding to the operation mode. According to the heat pump air conditioning system disclosed by the embodiment of the invention, the corresponding target air channel is formed by controlling the air supply subsystem, so that the problems of heating circulation interruption and window glass condensation caused by a vehicle in a defrosting mode are solved.

Description

Heat pump air conditioning system, air supply subsystem and method for controlling heat pump air conditioning system
Technical Field
The invention relates to the technical field of air conditioners, in particular to a heat pump air conditioning system, an air supply subsystem and a method for controlling the heat pump air conditioning system.
Background
The common heating of fuel oil and gas vehicles adopts the waste heat of an engine to meet the heating requirement in the vehicle without using a compressor air conditioning system. At present, with the gradual rise of new energy vehicles, especially electric automobile, because electric automobile's heat production and the calorific capacity of battery are less, can't satisfy the heating demand in the car, most producers adopt the mode of electrical heating, and adopt the electrical heating mode to consume a large amount of electric energy, reduce the whole car duration of vehicle, consequently, can adopt the heat pump circulation the same with ordinary room air conditioner, reduce heating power consumption, improve whole car duration.
However, the vehicle uses the heat pump heating, the same with ordinary room air conditioner, it is great at outdoor environment humidity, when the temperature is lower, the heat exchanger in the vehicle outside can frost, reduce the heat exchange efficiency of outside heat exchanger, influence the air conditioner effect of heating, and when the air conditioner gets into the mode of defrosting, cause the air conditioner to heat and be interrupted, influence user experience, and, after defrosting, inboard heat exchanger has the condensate water, when heating the circulation and opening once more, the condensate water can evaporate in the twinkling of an eye and be sent into in the carriage, at this moment, when the humid air of evaporation meets the lower window glass of temperature, will condense on glass, influence driver's sight, influence driving safety.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a heat pump air conditioning system that can solve the thermal cycle interruption caused by the defrosting mode, prevent the condensation of the humid air on the window glass, and improve the driving safety.
A second object of the present invention is to provide a blower subsystem.
A third object of the present invention is to propose a method of controlling a heat pump air conditioning system.
In order to achieve the above object, a first aspect of the present invention provides a heat pump air conditioning system, including: the heat pump air-conditioning subsystem comprises a compressor, an outer side heat exchanger arranged outside a carriage, an inner side heat exchanger arranged in the carriage, a throttling device and a reversing device; the air supply subsystem comprises a shell, a plurality of partition plates, a plurality of gates, an electric heating unit and a fan, wherein the partition plates, the gates, the electric heating unit and the fan are arranged in the shell; the shell is enclosed into an air supply cavity, the plurality of partition plates are used for forming a plurality of air supply channels communicated among the outer fresh air inlet, the inner return air inlet and the inner air outlet in the air supply cavity, and the plurality of air supply channels are provided with gates used for opening or closing the air supply channels; and the controller is used for detecting an operation mode control instruction, controlling the electric heating unit according to the operation mode control instruction, controlling the heat pump air-conditioning subsystem to operate in a corresponding operation mode, and controlling the on-off states of the gates according to the operation mode control instruction so as to form a target air supply channel corresponding to the operation mode, wherein the target air supply channel comprises an inner circulation channel, an outer circulation channel and a defrosting channel.
According to the heat pump air-conditioning system of the embodiment of the invention, the heat pump air-conditioning subsystem and the air supply subsystem are arranged in a matching way, the controller controls the heat pump air-conditioning subsystem to operate a corresponding operation mode according to a detected operation mode control instruction, a plurality of air supply channels communicated among the outer fresh air inlet, the inner return air inlet and the inner air outlet are formed in the air supply cavity of the air supply subsystem through a plurality of partition plates, a gate is arranged on the air supply channel, the air supply channel corresponding to the operation mode is formed by controlling the opening and closing states of the plurality of gates, the inner circulation, the outer circulation and the defrosting of air can be realized, namely, the combination of the heat pump air-conditioning subsystem and the air supply subsystem is adopted to realize the refrigeration or heating of a vehicle, the energy consumption is reduced, the energy is saved, an electric heating unit is arranged in the air supply channel, and the opening and closing state of the gate is controlled when the heat pump air-conditioning system enters the defrosting mode, form the defrosting passageway, set up in the casing based on defrosting passageway and electric heating unit and inboard heat exchanger, for thermal cycle continues and reduce the volume that the inboard heat exchanger surface generated the condensate water during defrosting, provide the basis.
In some embodiments, the plurality of separator plates comprises a first separator plate and a second separator plate; the plurality of gates comprises a first gate, a second gate, a third gate, a fourth gate and a fifth gate; the first gate is arranged at the outer fresh air port and used for closing or opening the outer fresh air port; the second gate and the third gate are arranged between the first partition plate and the shell and are used for closing or opening the air supply channel of the inner air return inlet and the outer fresh air inlet or the inner air outlet; the fourth gate is arranged between the first partition plate and the second partition plate, the fifth gate is arranged between the second partition plate and the shell, and the third gate, the fourth gate and the fifth gate are used for opening or closing the air supply channel of the inner air outlet and the inner air return inlet or the outer fresh air inlet.
In some embodiments, the controller detects a heating inner circulation control command, controls the heat pump subsystem to operate in a heating mode, and controls the first gate to be closed, the second gate to be opened, the third gate to be closed, the fourth gate to be opened, and the fifth gate to be closed to form the inner circulation passage, so that air in the vehicle compartment is discharged into the vehicle compartment through the inner air return opening, the inside heat exchanger, the electric heating unit, the fan, and the inner air outlet.
In some embodiments, the heat pump air conditioning system further comprises: the air outlet temperature sensor is used for collecting the temperature of the inner air outlet; the controller is further used for controlling the electric heating unit to be started when the air outlet temperature is smaller than a first temperature threshold value, or controlling the electric heating unit to be closed when the air outlet temperature is larger than a second temperature threshold value.
In some embodiments, the controller detects a refrigeration inner circulation control command, controls the heat pump air-conditioning subsystem to operate a refrigeration mode, and controls the first gate to be closed, the second gate to be opened, the third gate to be closed, the fourth gate to be opened, and the fifth gate to be closed to form the inner circulation channel, so that air in a vehicle compartment is discharged into the vehicle compartment through the inner air return inlet, the inner heat exchanger, the electric heating unit, the fan, and the inner air outlet.
In some embodiments, the controller detects a heating external circulation control command, controls the heat pump air-conditioning subsystem to operate in a heating mode, and controls the first gate to be opened, the second gate to be closed, the third gate to be closed, the fourth gate to be opened, and the fifth gate to be closed to form the external circulation channel, so that air outside a vehicle cabin is discharged into the vehicle cabin through the external fresh air inlet, the internal heat exchanger, the electric heating unit, the fan, and the internal air outlet.
In some embodiments, the heat pump air conditioning system further comprises: the air outlet temperature sensor is used for collecting the temperature of the inner air outlet; the environment temperature sensor is used for acquiring the environment temperature outside the automobile; the controller is also used for controlling the electric heating unit to be started when the environment temperature outside the vehicle is smaller than a third temperature threshold value and the air outlet temperature is smaller than a fourth temperature threshold value, or controlling the electric heating unit to be closed when the environment temperature outside the vehicle is larger than a fifth temperature threshold value and the air outlet temperature is larger than a sixth temperature threshold value, wherein the fifth temperature threshold value is larger than the third temperature threshold value, and the sixth temperature threshold value is larger than the fourth temperature threshold value.
In some embodiments, the controller detects a refrigeration external circulation control command, controls the heat pump air-conditioning subsystem to operate in a refrigeration mode, and controls the first gate to be opened, the second gate to be closed, the third gate to be closed, the fourth gate to be opened, and the fifth gate to be closed to form the external circulation channel, so that air outside a vehicle cabin is discharged into the vehicle cabin through the external fresh air inlet, the internal heat exchanger, the electric heating unit, the fan, and the internal air outlet.
In some embodiments, the controller detects a defrosting control command, controls the heat pump air conditioning subsystem to operate a defrosting mode and controls the electric heating unit to start heating, and controls the first gate to open, the second gate to close, the third gate to open, the fourth gate to close, and the fifth gate to open to form the defrosting channel, so that air in the vehicle compartment is discharged into the vehicle compartment through the inner air return opening, the third gate, the electric heating unit, the fan and the inner air outlet, and air in the vehicle compartment is discharged out of the vehicle compartment through the inner air return opening, the third gate, the electric heating unit, the fan, the fifth gate, the inner heat exchanger and the outer fresh air opening.
In order to achieve the above object, a second aspect of the present invention provides a blowing subsystem, including: a housing; a plurality of partition plates, a plurality of gates, an electric heating unit, and a fan disposed in the case; the shell is provided with an outer fresh air inlet communicated with the environment outside the carriage, an inner return air inlet communicated with the environment inside the carriage and an inner air outlet, and the electric heating unit and the fan are arranged close to the inner air outlet; the shell is enclosed to form an air supply cavity, the plurality of partition plates are used for forming a plurality of air supply channels communicated among the outer fresh air inlet, the inner return air inlet and the inner air outlet in the air supply cavity, and a gate is arranged on the plurality of air supply channels and used for communicating or closing the air supply channel.
According to the air supply subsystem provided by the embodiment of the invention, the air supply cavity of the air supply subsystem is internally provided with a plurality of air supply channels communicated among the outer fresh air inlet, the inner return air inlet and the inner air outlet through a plurality of partition plates, the air supply channels are provided with the gates, and the inner circulation channels, the outer circulation channels and the defrosting channels can be formed by controlling the opening and closing states of the plurality of gates, so that the circulation channels in a compartment are provided for a vehicle through a heat pump air conditioning system, and the air supply channels are internally provided with the electric heating units, so that the air in the circulation channels can be heated in a defrosting mode, and the electric heating units are combined with the heat pump air conditioning subsystem of the vehicle, so that the heat compensation can be provided for continuous heat circulation and the basis for reducing the condensed water on the surface of the inner side heat exchanger can be provided.
In some embodiments, the plurality of separator plates comprises a first separator plate and a second separator plate; the plurality of gates comprises a first gate, a second gate, a third gate, a fourth gate and a fifth gate; the first gate is arranged at the outer fresh air port and used for closing or opening the outer fresh air port; the second gate and the third gate are arranged between the first partition plate and the shell and are used for closing or opening the air supply channel of the inner air return inlet and the outer fresh air inlet or the inner air outlet; the fourth gate is arranged between the first partition plate and the second partition plate, the fifth gate is arranged between the second partition plate and the shell, and the third gate, the fourth gate and the fifth gate are used for opening or closing the air supply channel of the inner air outlet and the inner air return inlet or the outer fresh air inlet.
In order to achieve the above object, a third aspect of the present invention provides a method of controlling a heat pump air conditioning system, the method including: detecting an operation mode control instruction; controlling an electric heating unit according to the operation mode control instruction, and controlling the heat pump air-conditioning subsystem to operate in a corresponding operation mode; and controlling the opening and closing states of a plurality of gates of the air supply subsystem according to the operation mode control instruction so as to form a target air supply channel corresponding to the operation mode, wherein the target air supply channel comprises an inner circulation channel, an outer circulation channel and a defrosting channel.
According to the method for controlling the heat pump air-conditioning system, the heat pump air-conditioning subsystem and the air supply subsystem are controlled to operate corresponding operation modes according to the operation commands by detecting the operation mode control commands, namely, the air-conditioning subsystem supplies heat to a carriage, so that the problem of high power consumption of electric heating is solved, a defrosting channel is formed by controlling the opening and closing states of a plurality of gates of the air supply subsystem in the process of supplying heat to the carriage, when the heat pump air-conditioning system enters the defrosting mode, the electric heating unit in the air supply subsystem is combined to heat circulating air in the carriage, the problem of heating circulation interruption can be solved, and condensed water of an inner heat exchanger is discharged to the outer side of a vehicle through the defrosting channel, so that the problem of window glass condensation is solved.
In some embodiments, controlling the opening and closing states of a plurality of gates of the air supply subsystem according to the operation mode control command to form a target air supply channel corresponding to the operation mode comprises: detecting a heating inner loop control instruction; and controlling the first gate of the air supply subsystem to close, controlling the second gate to open, controlling the third gate to close, controlling the fourth gate to open and controlling the fifth gate to close so as to form the internal circulation channel.
In some embodiments, said controlling the electric heating unit according to the operation mode control command further comprises: acquiring the temperature of an inner air outlet of the air supply subsystem; the temperature of the inner air outlet is smaller than a first temperature threshold value, the electric heating unit of the air supply subsystem is controlled to be started, or the temperature of the inner air outlet is larger than a second temperature threshold value, and the electric heating unit is controlled to be closed.
In some embodiments, controlling the opening and closing states of a plurality of gates of the air supply subsystem according to the operation mode control command to form a target air supply channel corresponding to the operation mode comprises: detecting a refrigeration internal circulation control instruction; controlling the first gate to close, controlling the second gate to open, controlling the third gate to close, controlling the fourth gate to open, and controlling the fifth gate to close to form an internal circulation channel.
In some embodiments, controlling the opening and closing states of a plurality of gates of the air supply subsystem according to the operation mode control command to form a target air supply channel corresponding to the operation mode comprises: detecting a heating outer loop control instruction; controlling the first gate to open, controlling the second gate to close, controlling the third gate to close, controlling the fourth gate to open, and controlling the fifth gate to close to form an external circulation channel.
In some embodiments, said controlling the electric heating unit according to the operation mode control command further comprises: acquiring the temperature of an inner air outlet of the air supply subsystem and the ambient temperature outside the air supply subsystem; the temperature of the environment outside the vehicle is smaller than a third temperature threshold value, and the temperature of the air outlet is smaller than a fourth temperature threshold value, so that the electric heating unit is controlled to be started; or, the ambient temperature outside the vehicle is greater than a fifth temperature threshold and the air outlet temperature is greater than a sixth temperature threshold, and the electric heating unit is controlled to be closed, wherein the fifth temperature threshold is greater than the third temperature threshold, and the sixth temperature threshold is greater than the fourth temperature threshold.
In some embodiments, controlling the opening and closing states of a plurality of gates of the air supply subsystem according to the operation mode control command to form a target air supply channel corresponding to the operation mode comprises: detecting a refrigeration external circulation control instruction; controlling the first gate to open, controlling the second gate to close, controlling the third gate to close, controlling the fourth gate to open, and controlling the fifth gate to close to form an external circulation channel.
In some embodiments, controlling the opening and closing states of a plurality of gates of the air supply subsystem according to the operation mode control command to form a target air supply channel corresponding to the operation mode comprises: detecting a defrosting control instruction; controlling an electric heating unit to start heating, and controlling the first gate to be opened, the second gate to be closed, the third gate to be opened, the fourth gate to be closed and the fifth gate to be opened to form a defrosting channel; the method for controlling the electric heating unit according to the operation mode control command comprises the following steps: and controlling the electric heating unit to start heating.
Additional aspects and advantages of the invention 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 invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic view of a general room air conditioning cycle system according to one embodiment of the present invention;
FIG. 2 is a block diagram of a heat pump air conditioning system according to one embodiment of the present invention;
FIG. 3 is a schematic diagram of an air delivery subsystem configuration according to one embodiment of the present invention;
FIG. 4 is a schematic diagram of a heat pump air conditioning subsystem cycle according to one embodiment of the present invention;
FIG. 5 is a schematic diagram of a heating or cooling internal cycle of a heat pump air conditioning system according to one embodiment of the present invention;
FIG. 6 is a schematic diagram of a heat pump air conditioning system heating or cooling external cycle according to one embodiment of the present invention;
FIG. 7 is a schematic diagram of a heat pump air conditioning system cycling in a defrost mode in accordance with one embodiment of the present invention;
fig. 8 is a flowchart of a method of controlling a heat pump air conditioning system according to one embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below, the embodiments described with reference to the drawings being illustrative, and the embodiments of the present invention will be described in detail below.
In the related art, a general room air conditioning cycle system is shown in fig. 1, the air conditioning cycle system is used in a general room, an outdoor heat exchanger is arranged outside the room, an indoor heat exchanger is arranged in the room, cooling or heating is realized by reversing through a four-way valve and changing the flowing direction of a refrigerant, when heating, a high-temperature and high-pressure gas refrigerant is guided to the indoor heat exchanger through the four-way valve, condensed, liquefied and released heat to form liquid, indoor air is heated, the indoor temperature is increased, the liquid refrigerant flows into a throttling device for decompression, enters the outdoor heat exchanger, evaporated, gasified and released heat to form gas, heat of outdoor air is absorbed, and the refrigerant which becomes gas enters a compressor again to start the next heating cycle.
During refrigeration, high-temperature and high-pressure gas refrigerant is guided to the outdoor heat exchanger through the four-way valve, condensed, liquefied and released to form liquid, heat is released to air, the liquid refrigerant flows into the throttling device to be decompressed, enters the indoor heat exchanger, is evaporated, gasified and absorbed to form gas, and simultaneously absorbs heat of indoor air to achieve the purpose of reducing indoor temperature, and the refrigerant which becomes gas enters the compressor again to start the next refrigeration cycle. The defrosting of the air conditioner is realized by changing a refrigeration mode into a heating mode through reversing of the four-way valve, and the defrosting function of the outdoor unit of the air conditioner is realized.
The heat pump air-conditioning system provided by the embodiment of the invention adopts the heat pump air-conditioning subsystem similar to the common room air-conditioning system and combines the air supply subsystem to realize the refrigeration, heating or defrosting of the vehicle, and further can solve the problem of heat circulation interruption caused by a defrosting mode, avoid the condensation of wet air on the window glass and improve the driving safety.
A heat pump air conditioning system according to an embodiment of the first aspect of the present invention will be described with reference to fig. 2 to 4.
As shown in fig. 2, the heat pump air conditioning system 1 of the embodiment of the present invention includes a heat pump air conditioning subsystem 10, an air supply subsystem 20, and a controller 30.
Through using heat pump air conditioning subsystem 10 and air supply system 20 cooperation in this implementation, when heat pump air conditioning system 1 detected the operation mode control command, through the corresponding operation mode of control heat pump air conditioning subsystem 10 operation to according to the on-off state of the multiple gates of operation mode control command control air supply subsystem 20, form corresponding air supply passageway, when heat pump air conditioning system 1 is reverse to defrost, through the air in the heating air supply passageway, solve the problem that the thermal cycle is interrupted and the glass of window condensation in the defrosting process.
Fig. 3 is a schematic diagram of the structure of the air supply subsystem according to an embodiment of the present invention. The air supply subsystem 20 comprises a shell 21 and a plurality of partition plates, such as partition plates 221 and 222 in fig. 3, a plurality of gates, such as gates 231 and 232 in fig. 3, and the like, arranged in the shell 21, an electric heating unit 24 and a fan 25, wherein the shell 21 is provided with an outer fresh air inlet 26 communicated with the environment outside the compartment, an inner air return inlet 27 communicated with the environment inside the compartment and an inner air outlet 28, the electric heating unit 24 and the fan 25 are arranged close to the inner air outlet 28, and an inner heat exchanger is arranged in the shell 21; the shell 21 encloses an air supply cavity, the plurality of partition plates are used for forming a plurality of air supply channels communicated among the outer fresh air inlet 26, the inner air return inlet 27 and the inner air outlet 28 in the air supply cavity, and the plurality of air supply channels are provided with gates used for opening or closing the air supply channels; the controller 30 is configured to detect an operation mode control instruction, control the heat pump air-conditioning subsystem 10 to operate a corresponding operation mode, and control the on/off states of the plurality of gates according to the operation mode control instruction, so as to form a target air supply channel corresponding to the operation mode, where the target air supply channel includes an inner circulation channel, an outer circulation channel, and a defrosting channel.
Fig. 4 is a schematic diagram of a heat pump air conditioning subsystem cycle according to an embodiment of the present invention. The heat pump air conditioning subsystem 10 includes a compressor 11, an outside heat exchanger 12 disposed outside the vehicle compartment, an inside heat exchanger 13 disposed inside the vehicle compartment, a throttling device 14, and a reversing device 15. The outer heat exchanger 12 of the heat pump air-conditioning subsystem 10 is in contact with the environment outside the carriage to exchange heat with the ambient air around the carriage, the inner heat exchanger 13 is arranged in the air supply subsystem 20, the air supply subsystem 20 sends the air subjected to heat exchange with the inner heat exchanger 13 into the carriage, and the compressor 11 can be driven by electric drive or vehicle engine power, and can be commonly selected from a rotor type, a piston type, a vortex type and the like.
In the embodiment, a user presses a control key of a refrigeration operation mode of an air conditioner controller, the controller 30 receives a control instruction of the refrigeration operation mode, controls the heat pump air-conditioning subsystem 10 to be in the refrigeration mode, communicates an exhaust port of the compressor 11 with the outer heat exchanger 12 through a guiding function of a reversing device 15 such as a four-way valve, allows high-temperature and high-pressure refrigerant gas discharged from the compressor 11 to enter the outer heat exchanger 12, dissipates heat and reduces temperature in the outer heat exchanger 12 to form high-pressure liquid refrigerant, reduces pressure through a throttling device 14 to form saturated low-temperature refrigerant, allows the saturated low-temperature refrigerant to enter the inner heat exchanger 13, evaporates, vaporizes, evaporates, absorbs heat and flows back into the compressor 11 in the inner heat exchanger 13, controls the on-off states of a plurality of gates in the air supply subsystem 20 according to the control instruction of the refrigeration operation mode, forms an inner circulation channel, allows air to enter from an inner return port 27 or forms an outer circulation channel, air enters from the outer fresh air inlet 26, and then after the air enters through the inner heat exchanger 13 and the electric heating unit 24, the temperature of the air is reduced, and the air is discharged into the carriage through the target air supply channel, so that the refrigerating effect of the carriage is realized. The throttling device 14 is configured to reduce pressure of a refrigerant, such as a capillary tube, an electronic expansion valve, a thermal expansion valve, a throttle valve, and a throttle orifice, and the refrigerant may be selected from R134A, R1234yf, R410A, and R32.
When a user presses a heating operation mode control button of an air conditioner controller, the controller 30 receives a heating operation mode control instruction, controls the heat pump air-conditioning subsystem 10 to be in a heating mode, communicates an exhaust port of the compressor 11 with the inner heat exchanger 13 through the guiding function of a reversing device 15 such as a four-way valve, high-temperature and high-pressure refrigerant gas exhausted from the compressor 11 enters the inner heat exchanger 13, is condensed, liquefied and releases heat to form high-pressure liquid refrigerant, is decompressed through a throttling device 14 to form saturated low-temperature refrigerant, enters the outer heat exchanger 12, is evaporated, gasified and releases heat to return to the compressor 11, controls the opening and closing states of a plurality of gates in the air supply subsystem 20 according to the heating operation mode control instruction to form an inner circulation channel, air enters from an inner return air port 27 or forms an outer circulation channel, and air enters from an outer fresh air port 26, further, the temperature of the intake air is increased after the intake air is heated by the inside heat exchanger 13 and the electric heating unit 24, and the intake air is discharged into the vehicle compartment through the target air duct, thereby achieving the vehicle compartment heating effect.
When the temperature sensor detects that the middle temperature of the outer side heat exchanger 12 and the environment temperature outside the vehicle meet a specific temperature threshold value, the heat pump air-conditioning system 1 meets a defrosting condition, the controller 30 controls the heat pump air-conditioning subsystem 10 to exit from a heating mode, the four-way valve is reversed, the heat pump air-conditioning subsystem 10 is controlled to enter into the defrosting mode, the switch states of a plurality of gates of the air supply subsystem 20 are controlled to form a defrosting channel, air enters from the inner return air inlet 27, is heated by the inner side heat exchanger 13 and the electric heating unit 24 and then is divided into two paths through the fan 25, one path of air is discharged into a carriage through the defrosting channel, and the other path of air is discharged out of the vehicle through the outer fresh air inlet 26. Through 24 heating cycle air of electrical heating unit, avoid low temperature air to discharge into the carriage, lead to the thermal cycle to be interrupted to through outside discharging humid air, when opening thermal cycle again after solving current defrosting and ending, humid air gets into the carriage and arouses the door window condensation problem.
According to the air supply subsystem 20 of the embodiment of the invention, a plurality of air supply channels communicated among the outer fresh air inlet 26, the inner return air inlet 27 and the inner air outlet 28 are formed in an air supply cavity of the air supply subsystem 20 through a plurality of partition plates, the air supply channels are provided with gates, and an inner circulation channel, an outer circulation channel and a defrosting channel can be formed by controlling the opening and closing states of the plurality of gates, so that a circulation channel in a compartment is provided for a vehicle through the heat pump air conditioning system 1, and an electric heating unit 24 is arranged in the air supply channels, can heat air in the circulation channel in a defrosting mode, and can provide heat compensation for continuous heat circulation and provide a basis for reducing condensed water on the surface of the inner side heat exchanger 13 by being combined with the heat pump air conditioning subsystem 10 of the vehicle.
According to the heat pump air-conditioning system 1 of the embodiment of the invention, the heat pump air-conditioning subsystem 10 and the air supply subsystem 20 are cooperatively arranged, the controller 30 controls the heat pump air-conditioning subsystem 10 to operate a corresponding operation mode according to a detected operation mode control instruction, a plurality of air supply channels communicated among the outer fresh air inlet 26, the inner return air inlet 27 and the inner air outlet 28 are formed in an air supply cavity of the air supply subsystem 20 through a plurality of partition plates, a gate is arranged on each air supply channel, and the air supply channels corresponding to the operation modes are formed by controlling the opening and closing states of the plurality of gates, so that the internal circulation, the external circulation and the defrosting of air can be realized, namely, the combination of the heat pump air-conditioning subsystem 10 and the air supply subsystem 20 is adopted to realize the cooling or heating of a vehicle, the energy consumption is reduced, the energy is saved, an electric heating unit 24 is arranged in the air supply channel, when the heat pump air-conditioning system 1 enters the defrosting mode, the on-off state of the gate is controlled, a defrosting channel is formed, and the defrosting channel, the electric heating unit 24 and the inner side heat exchanger 13 are arranged in the shell, so that a foundation is provided for heat circulation continuation during defrosting and reduction of the amount of condensed water generated on the surface of the inner side heat exchanger.
In the embodiment, the shape, size, position and number of the partition plates may be set according to the specification of the structure or size of the blowing chamber to form a plurality of blowing passages communicating between the outer fresh air port 26, the inner return air port 27 and the inner air outlet 28 in the blowing chamber, so that the target blowing passage is formed by setting a shutter on the blowing passage and by controlling the open and close state of the shutter.
In some embodiments, as shown in fig. 3, the plurality of separation plates includes a first separation plate 221 and a second separation plate 222; the plurality of gates include a first gate 231, a second gate 232, a third gate 233, and fourth and fifth gates 234 and 235; the first shutter 231 is provided at the outer fresh air opening 26 for closing or opening the outer fresh air opening 26; the second gate 232 and the third gate 233 are both arranged between the first partition 221 and the casing 21, and are used for closing or opening the air supply channels of the inner air return inlet 27 and the outer fresh air inlet 26 or the inner air outlet 28; the fourth shutter 234 is disposed between the first partition plate 221 and the second partition plate 222, the fifth shutter 235 is disposed between the second partition plate 222 and the casing 21, and the third shutter 233, the fourth shutter 234 and the fifth shutter 235 are configured to open or close the air supply channels of the inner air outlet 28 and the inner air return 27 or the outer fresh air inlet 26, control the heat pump air-conditioning subsystem 10 to cool, heat or melt frost through the operation mode control command detected by the controller 30, and control the opening and closing of the plurality of shutters of the air supply subsystem 20 to form a target air supply channel, so as to implement different operation modes of the heat pump air-conditioning system 1, which is specifically referred to in the following embodiments.
The operation of the heat pump air conditioning system according to the embodiment of the present invention in various operation modes will be described below by taking the blower subsystem shown in fig. 3 as an example.
In some embodiments, as shown in fig. 5, a schematic diagram of a heating or cooling inner cycle of a heat pump air conditioning system according to an embodiment of the invention is shown. The user presses the air conditioner controller heating inner circulation control button, the controller 30 detects a heating inner circulation control instruction, the heat pump air-conditioning subsystem 10 is controlled to enter a heating mode, the first gate is controlled to be closed 231, the second gate is controlled to be opened 232, the third gate is controlled to be closed 233, the fourth gate 234 is controlled to be opened, and the fifth gate 235 is controlled to be closed to form an inner circulation channel, the air direction of the inner circulation channel is shown by an arrow in fig. 5, air in the carriage is discharged into the carriage through the inner return air inlet 27, the inner side heat exchanger 13, the electric heating unit 24, the fan 25 and the inner air outlet 28, when the air outlet temperature of the inner air outlet 28 cannot meet the user requirement, the electric heating unit 24 is opened, the air outlet temperature is increased, and if the air outlet temperature meets the user requirement, the electric heating unit 24 does not need to be opened.
In some embodiments, the heat pump air conditioning system 1 further comprises an air outlet temperature sensor for acquiring the temperature of the inner air outlet; the controller 30 is further configured to control the electrical heating unit 24 to be turned on when the outlet temperature is less than the first temperature threshold, or control the electrical heating unit 24 to be turned off when the outlet temperature is greater than the second temperature threshold.
In short, during the heating inner circulation control, when the air outlet temperature cannot meet the user requirement, the electric heating unit 24 is turned on, otherwise, it is turned off. For example, the outlet temperature sensor detects the outlet temperature of the inner outlet 28, and when the outlet temperature of the inner outlet 28 is less than 38 ℃, the controller 30 controls the electric heating unit 24 to be turned on to heat the outlet temperature, so that the passenger compartment feels comfortable; when the temperature of the air outlet is higher than 45 ℃, the controller 30 controls the electric heating unit 24 to be closed, and the air outlet temperature is stopped being heated, so that the discomfort caused by overhigh temperature in the carriage is avoided.
In some embodiments, as shown in fig. 5, when the user presses the air conditioner controller refrigeration inner circulation control button, the controller 30 detects a refrigeration inner circulation control command, controls the heat pump air-conditioning subsystem 10 to operate the refrigeration mode, and controls the first shutter 231 to close, controls the second shutter 232 to open, controls the third shutter 233 to close, controls the fourth shutter 234 to open, and controls the fifth shutter 235 to close to form an inner circulation passage, the air flow direction of the inner circulation passage is shown by arrows in fig. 5, the air in the vehicle compartment is discharged into the vehicle compartment through the inner return air inlet 27, the inner heat exchanger 13, the electric heating unit 24, the fan 25, and the inner air outlet 28, and the electric heating unit 24 is closed.
In some embodiments, as shown in fig. 6, a schematic diagram of a heating or cooling external cycle of a heat pump air conditioning system according to an embodiment of the present invention is shown. When a user presses a heating outer circulation control key of an air conditioner controller, the controller 30 detects a heating outer circulation control instruction, controls the heat pump air-conditioning subsystem 10 to enter a heating mode, controls the first gate to be opened 231, controls the second gate to be closed 232, controls the third gate to be closed 233, controls the fourth gate 234 to be opened and controls the fifth gate 235 to be closed so as to form an outer circulation channel, the air of the outer circulation channel moves in the direction shown by the arrow in fig. 6, the air outside the carriage is discharged into the carriage through the outer fresh air inlet 26, the inner side heat exchanger 13, the electric heating unit 24, the fan 25 and the inner air outlet 28, when the air outlet temperature of the inner air outlet 28 cannot meet the user requirement, the electric heating unit 24 is opened to heat the air outlet temperature, and if the air outlet temperature meets the user requirement, the electric heating unit 24 is closed.
In some embodiments, the heat pump air conditioning system 1 further comprises an outlet temperature sensor for acquiring an inner outlet temperature; the environment temperature sensor is used for acquiring the environment temperature outside the vehicle; the controller 30 is further configured to control the electric heating unit 24 to be turned on when the environment temperature outside the vehicle is less than the third temperature threshold and the air outlet temperature is less than the fourth temperature threshold, or control the electric heating unit 24 to be turned off when the environment temperature outside the vehicle is greater than the fifth temperature threshold and the air outlet temperature is greater than the sixth temperature threshold, where the fifth temperature threshold is greater than the third temperature threshold and the sixth temperature threshold is greater than the fourth temperature threshold.
In brief, during heating external circulation control, when the air outlet temperature cannot meet the user requirement, the electric heating unit 24 is turned on, otherwise, the electric heating unit is turned off, for example, the air outlet temperature sensor detects the air outlet temperature of the inner air outlet 28, and the environment temperature sensor detects the environment temperature outside the vehicle, when the environment temperature outside the vehicle is less than-5 ℃ and the air outlet temperature of the inner air outlet 28 is less than 38 ℃, the controller 30 controls the electric heating unit 24 to be turned on to heat the air outlet temperature, so that the feeling in the vehicle compartment is comfortable; when the ambient temperature outside the vehicle is greater than 0 ℃ and the air outlet temperature of the inner air outlet 28 is greater than 45 ℃, the controller 30 controls the electric heating unit 24 to be closed, and the air outlet temperature is stopped being heated, so that the discomfort caused by overhigh temperature in the carriage is avoided.
In some embodiments, as shown in fig. 6, when the user presses the air conditioner controller cooling external circulation control button, the controller 30 detects a cooling external circulation control command, controls the heat pump air-conditioning subsystem 10 to operate the cooling mode, and controls the first shutter 231 to open, the second shutter 232 to close, the third shutter 233 to close, the fourth shutter 234 to open, and the fifth shutter 235 to close to form an external circulation channel, the air of the internal circulation channel moves as shown by arrows in fig. 6, the outside air is discharged into the vehicle compartment through the outside fresh air inlet 26, the inside heat exchanger 13, the electric heating unit 24, the fan 25, and the inside air outlet 28, and the electric heating unit 24 is closed.
In some embodiments, as shown in fig. 7, the controller 30 detects a defrosting control command, controls the heat pump air conditioning subsystem 10 to operate a defrosting mode and controls the electric heating unit 24 to start heating, and controls the first shutter to open 231, the second shutter to close 232, the third shutter 233 to open, the fourth shutter to close 234, and the fifth shutter 235 to open to form a defrosting passage, and discharges air in the vehicle compartment into the vehicle compartment through the inner return air inlet 27, the third shutter 233, the electric heating unit 24, the fan 25, and the inner air outlet 28, and discharges air in the vehicle compartment out of the vehicle compartment through the inner return air inlet 27, the third shutter 233, the electric heating unit 24, the fan 25, the fifth shutter 235, the inner heat exchanger 13, and the outer fresh air inlet 26.
In an embodiment, as shown in fig. 7, a schematic diagram of a heat pump air conditioning system according to an embodiment of the present invention circulating in a defrosting mode is shown. When detecting that the heat pump air conditioning system meets the defrosting condition, the controller 30 controls the heat pump air conditioning subsystem 10 to enter the defrosting mode.
When the defrosting condition is met, for example, when the heat pump air conditioning system 1 is in the heating mode, the temperature sensor detects the temperature of the middle part of the outer heat exchanger 12, which is recorded as TCAnd the ambient temperature is, for example, denoted T0When T isC-T0>At 10 ℃, the heat pump air-conditioning subsystem 10 meets the defrosting condition, exits from the current heating mode, reverses the direction of the four-way valve, automatically enters into the defrosting mode, and controls the corresponding gate of the air supply subsystem 20 to open or close to form a defrosting channel, so that the air in the carriage circulates according to the flow direction of the arrow in fig. 7, the heating unit 24 is started to heat the air in the channel, and the air in the channel is heated by the electric heating unit 24 and then is heated. The hot air is divided into two paths after passing through the fan 25, one path of hot air is discharged into the carriage from the inner air outlet 28, the problem that heating circulation is interrupted during defrosting can be solved, hot air exchanges heat with the inner side heat exchanger 13, defrosting efficiency can be improved, condensed water of the inner side heat exchanger 13 is reduced, the other path of hot air is discharged out of the carriage from the outer fresh air port 26, and the problem that when the heating circulation is started again after current defrosting is finished, wet air is discharged into the carriage to cause condensation of the window glass is solved.
In summary, according to the heat pump air conditioning system 1 of the embodiment of the present invention, by arranging the heat pump air conditioning subsystem 10 and the air supply subsystem 20 in a matching manner, the controller 30 controls the heat pump air conditioning subsystem 10 to operate a corresponding operation mode according to a detected operation mode control instruction, and forms a plurality of air supply channels communicating between the outer fresh air inlet 26, the inner return air inlet 27 and the inner air outlet 28 in the air supply cavity of the air supply subsystem 20 through a plurality of partition plates, and the air supply channels are provided with shutters, and form the air supply channels corresponding to the operation mode by controlling the opening and closing states of the plurality of shutters, so that the internal circulation, the external circulation and the defrosting of the air can be realized, that is, when the heat pump air conditioning subsystem 10 and the air supply subsystem 20 are combined to realize the cooling or heating of the vehicle, the energy consumption is reduced, and the energy is saved, and the electric heating unit 24 is arranged in the air supply channel, when the heat pump air conditioning system 1 enters the defrosting mode, the on-off state of the gate is controlled, a defrosting channel is formed, and the defrosting channel, the electric heating unit 24 and the inner side heat exchanger 13 are arranged in the shell, so that a foundation is provided for heat circulation continuation during defrosting and reduction of the amount of condensed water generated on the surface of the inner side heat exchanger.
A method of controlling a heat pump air conditioning system according to an embodiment of the third aspect of the present invention will be described below with reference to the accompanying drawings.
Fig. 8 is a flowchart of a method of controlling a heat pump air conditioning system according to an embodiment of the present invention, which includes at least steps S1, S2, and S3, as shown in fig. 8.
In step S1, an operation mode control command is detected.
In an embodiment, the user presses an operation mode key on the air conditioner controller, the controller detects an operation mode control command, and the heat pump air conditioning subsystem performs step S2 in response to the control command.
And step S2, controlling the electric heating unit according to the operation mode control instruction, and controlling the heat pump air-conditioning subsystem to operate in a corresponding operation mode.
In an embodiment, the heat pump air-conditioning subsystem controls the heat pump air-conditioning subsystem to operate a corresponding operation mode in response to the operation mode control command, for example, controls the heat pump air-conditioning subsystem to enter a heating mode in response to the heating inner circulation control command.
And step S3, controlling the opening and closing states of a plurality of gates of the air supply subsystem according to the operation mode control instruction to form a target air supply channel corresponding to the operation mode, wherein the target air supply channel comprises an inner circulation channel, an outer circulation channel and a defrosting channel.
In the embodiment, the air supply subsystem responds to the operation mode control instruction and controls the opening and closing states of a plurality of gates of the air supply subsystem to form a target air supply channel corresponding to the operation mode.
According to the method for controlling the heat pump air-conditioning system, the heat pump air-conditioning subsystem and the air supply subsystem are controlled to operate corresponding operation modes according to the operation commands by detecting the operation mode control commands, namely, the air-conditioning subsystem supplies heat to a carriage, so that the problem of high power consumption of electric heating is solved, a defrosting channel is formed by controlling the opening and closing states of a plurality of gates of the air supply subsystem in the process of supplying heat to the carriage, when the heat pump air-conditioning system enters the defrosting mode, the electric heating unit in the air supply subsystem is combined to heat circulating air in the carriage, the problem of heating circulation interruption can be solved, and condensed water of an inner heat exchanger is discharged to the outer side of a vehicle through the defrosting channel, so that the problem of window glass condensation is solved.
In some embodiments, the operation mode control instructions control the open and close states of a plurality of dampers of the air supply subsystem to form a target air supply passage corresponding to the operation mode, including: detecting a heating inner loop control instruction; the first gate of control air supply subsystem closes, controls the second gate and opens, controls the third gate and closes, controls the fourth gate and opens and control the fifth gate and close in order to form interior circulation channel to in making the carriage air pass through interior return air inlet, inboard heat exchanger, electric heating unit, fan and interior air outlet and arrange into the carriage, when the air-out temperature of interior air outlet can't satisfy user's demand, open electric heating unit, improve the air-out temperature, if the air-out temperature satisfies user's demand, then need not to open electric heating unit.
In some embodiments, controlling the electrical heating unit according to the operation mode control instruction further comprises: acquiring the temperature of an inner air outlet of the air supply subsystem; interior air outlet temperature is less than first temperature threshold value, the electrical heating unit of control air supply subsystem opens, perhaps, interior air outlet temperature is greater than second temperature threshold value, control electrical heating unit closes, heat pump air conditioning system is when heating under the inner loop mode, gate switch through control air supply subsystem, form the inner loop passageway, can heat for the carriage in order to guarantee the air-out temperature of inner loop passageway, furthermore, detect air supply subsystem's air outlet temperature through thermodetector, and when the temperature accords with preset temperature threshold value, control electrical heating unit is closed or is opened.
In some embodiments, controlling the opening and closing states of a plurality of gates of the air supply subsystem according to the operation mode control instruction to form a target air supply channel corresponding to the operation mode comprises: detecting a refrigeration internal circulation control instruction; the first gate is controlled to be closed, the second gate is controlled to be opened, the third gate is controlled to be closed, the fourth gate is controlled to be opened, and the fifth gate is controlled to be closed to form an internal circulation channel, so that the refrigeration function of the carriage is realized through the internal circulation channel.
In some embodiments, controlling the opening and closing states of a plurality of gates of the air supply subsystem according to the operation mode control instruction to form a target air supply channel corresponding to the operation mode comprises: detecting a heating outer loop control instruction; the first gate is controlled to be opened, the second gate is controlled to be closed, the third gate is controlled to be closed, the fourth gate is controlled to be opened, the fifth gate is controlled to be closed to form an external circulation channel, and the heating function of the carriage is realized through the circulation of air in the external circulation channel.
In some embodiments, controlling the electrical heating unit according to the operation mode control instruction further comprises: acquiring the temperature of an inner air outlet of the air supply subsystem and the ambient temperature outside the air supply subsystem; the temperature of the environment outside the vehicle is smaller than a third temperature threshold value, and the temperature of the air outlet is smaller than a fourth temperature threshold value, so that the electric heating unit is controlled to be started; or, the ambient temperature outside the vehicle is greater than a fifth temperature threshold and the air outlet temperature is greater than a sixth temperature threshold, and the electric heating unit is controlled to be turned off, wherein the fifth temperature threshold is greater than the third temperature threshold and the sixth temperature threshold is greater than a fourth temperature threshold, the temperature outside the vehicle and the air outlet temperature are detected through the temperature sensor, when the air outlet temperature cannot meet the user requirement, the electric heating is turned on, and if the user requirement is met, the electric heating is turned off.
In some embodiments, controlling the opening and closing states of a plurality of gates of the air supply subsystem according to the operation mode control instruction to form a target air supply channel corresponding to the operation mode comprises: detecting a refrigeration external circulation control instruction; the first gate is controlled to be opened, the second gate is controlled to be closed, the third gate is controlled to be closed, the fourth gate is controlled to be opened, and the fifth gate is controlled to be closed to form an outer circulation channel.
In some embodiments, controlling the opening and closing states of a plurality of gates of the air supply subsystem according to the operation mode control instruction to form a target air supply channel corresponding to the operation mode comprises: detecting a defrosting control instruction; the method comprises the steps of controlling the electric heating unit to start heating, controlling the first gate to open, controlling the second gate to close, controlling the third gate to open, controlling the fourth gate to close and controlling the fifth gate to open so as to form a defrosting channel, forming the defrosting channel by controlling the gate switch of the air supply subsystem when the vehicle enters a defrosting mode, and controlling the electric heating unit according to an operation mode control instruction. The circulating air is electrically heated, so that a part of hot air enters the carriage, the interruption of heating circulation in the carriage is avoided, the other part of hot air is discharged from a fresh air port through the inner side heat exchanger, and the problem of vehicle window condensation caused by restarting the heating circulation after defrosting is solved.
In summary, according to the method for controlling the heat pump air conditioning system of the embodiment of the invention, the heat pump air conditioning subsystem and the air supply subsystem are controlled to operate corresponding operation modes according to operation mode control instructions, namely, the air conditioning subsystem supplies heat to the carriage, so that the problem of high power consumption of electric heating is solved, a defrosting channel is formed by controlling the opening and closing states of a plurality of gates of the air supply subsystem in the process of supplying heat to the carriage, when the heat pump air conditioning system enters the defrosting mode, the electric heating unit in the air supply subsystem is combined to heat circulating air in the carriage, so that the problem of interruption of heating circulation can be solved, and condensed water of an inner side heat exchanger is discharged to the outer side of a vehicle through the defrosting channel, so that the problem of condensation of window glass is solved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (17)

1. A heat pump air conditioning system for a vehicle, comprising:
the heat pump air-conditioning subsystem comprises a compressor, an outer side heat exchanger arranged outside a carriage, an inner side heat exchanger arranged in the carriage, a throttling device and a reversing device;
the air supply subsystem comprises a shell, a plurality of partition plates, a plurality of gates, an electric heating unit and a fan, wherein the partition plates, the gates, the electric heating unit and the fan are arranged in the shell;
the shell is enclosed into an air supply cavity, a plurality of air supply channels communicated among the outer fresh air inlet, the inner return air inlet and the inner air outlet are formed in the air supply cavity through a plurality of partition plates, and gates are arranged on the air supply channels and used for opening or closing the air supply channels;
a controller for detecting an operation mode control instruction, controlling the electric heating unit and the heat pump air-conditioning subsystem to operate corresponding operation modes according to the operation mode control instruction, and controlling the on-off states of the gates according to the operation mode control instruction to form a target air supply channel corresponding to the operation modes, wherein the target air supply channel comprises an inner circulation channel, an outer circulation channel and a defrosting channel, wherein,
the plurality of partition plates includes a first partition plate and a second partition plate; the plurality of gates comprises a first gate, a second gate, a third gate, a fourth gate and a fifth gate; the first gate is arranged at the outer fresh air port and used for closing or opening the outer fresh air port; the second gate and the third gate are arranged between the first partition plate and the shell and are used for closing or opening the air supply channel of the inner air return inlet and the outer fresh air inlet or the inner air outlet; the fourth gate is arranged between the first partition plate and the second partition plate, the fifth gate is arranged between the second partition plate and the shell, and the third gate, the fourth gate and the fifth gate are used for opening or closing the air supply channel of the inner air outlet and the inner air return inlet or the outer fresh air inlet.
2. The heat pump air conditioning system of claim 1,
the controller detects a heating inner circulation control instruction, controls the heat pump air-conditioning subsystem to operate a heating mode, controls the first gate to be closed, controls the second gate to be opened, controls the third gate to be closed, controls the fourth gate to be opened and controls the fifth gate to be closed to form the inner circulation channel, so that air in a compartment is discharged into the compartment through the inner air return opening, the inner side heat exchanger, the electric heating unit, the fan and the inner air outlet.
3. The heat pump air conditioning system of claim 2, further comprising:
the air outlet temperature sensor is used for collecting the temperature of the inner air outlet;
the controller is further used for controlling the electric heating unit to be started when the air outlet temperature is smaller than a first temperature threshold value, or controlling the electric heating unit to be closed when the air outlet temperature is larger than a second temperature threshold value.
4. The heat pump air conditioning system of claim 1,
the controller detects a refrigeration inner circulation control instruction, controls the heat pump air-conditioning subsystem to operate in a refrigeration mode, controls the first gate to be closed, controls the second gate to be opened, controls the third gate to be closed, controls the fourth gate to be opened and controls the fifth gate to be closed to form the inner circulation channel, so that air in a compartment is discharged into the compartment through the inner air return opening, the inner side heat exchanger, the electric heating unit, the fan and the inner air outlet.
5. The heat pump air conditioning system of claim 1,
the controller detects a heating outer circulation control instruction, controls the heat pump air-conditioning subsystem to operate in a heating mode, controls the first gate to be opened, controls the second gate to be closed, controls the third gate to be closed, controls the fourth gate to be opened and controls the fifth gate to be closed to form the outer circulation channel, so that air outside the compartment is discharged into the compartment through the outer fresh air inlet, the inner side heat exchanger, the electric heating unit, the fan and the inner air outlet.
6. The heat pump air conditioning system of claim 5, further comprising:
the air outlet temperature sensor is used for collecting the temperature of the inner air outlet;
the environment temperature sensor is used for acquiring the environment temperature outside the automobile;
the controller is also used for controlling the electric heating unit to be started when the environment temperature outside the vehicle is smaller than a third temperature threshold value and the air outlet temperature is smaller than a fourth temperature threshold value, or controlling the electric heating unit to be closed when the environment temperature outside the vehicle is larger than a fifth temperature threshold value and the air outlet temperature is larger than a sixth temperature threshold value, wherein the fifth temperature threshold value is larger than the third temperature threshold value, and the sixth temperature threshold value is larger than the fourth temperature threshold value.
7. The heat pump air conditioning system of claim 1,
the controller detects a refrigeration outer circulation control instruction, controls the heat pump air-conditioning subsystem to operate in a refrigeration mode, controls the first gate to be opened, controls the second gate to be closed, controls the third gate to be closed, controls the fourth gate to be opened and controls the fifth gate to be closed to form the outer circulation channel, so that air outside the compartment is discharged into the compartment through the outer fresh air inlet, the inner side heat exchanger, the electric heating unit, the fan and the inner air outlet.
8. The heat pump air conditioning system of claim 1,
the controller detects a defrosting control instruction, controls the heat pump air-conditioning subsystem to operate a defrosting mode, controls the electric heating unit to start heating, controls the first gate to be opened, controls the second gate to be closed, controls the third gate to be opened, controls the fourth gate to be closed, and controls the fifth gate to be opened to form the defrosting channel, so that air in the compartment is discharged into the compartment through the inner air return opening, the third gate, the electric heating unit, the fan and the inner air outlet, and air in the compartment is discharged out of the compartment through the inner air return opening, the third gate, the electric heating unit, the fan, the fifth gate, the inner side heat exchanger and the outer fresh air inlet.
9. An air supply subsystem, comprising:
a housing;
a plurality of partition plates, a plurality of gates, an electric heating unit, and a fan disposed in the case;
the shell is provided with an outer fresh air inlet communicated with the environment outside the carriage, an inner return air inlet communicated with the environment inside the carriage and an inner air outlet, and the electric heating unit and the fan are arranged close to the inner air outlet;
wherein the shell is enclosed into an air supply cavity, a plurality of air supply channels communicated among the outer fresh air inlet, the inner return air inlet and the inner air outlet are formed in the air supply cavity through a plurality of partition plates, a gate is arranged on the plurality of air supply channels and is used for communicating or closing the air supply channel, wherein,
the plurality of partition plates includes a first partition plate and a second partition plate;
the plurality of gates comprises a first gate, a second gate, a third gate, a fourth gate and a fifth gate;
the first gate is arranged at the outer fresh air port and used for closing or opening the outer fresh air port;
the second gate and the third gate are arranged between the first partition plate and the shell and are used for closing or opening the air supply channel of the inner air return inlet and the outer fresh air inlet or the inner air outlet;
the fourth gate is arranged between the first partition plate and the second partition plate, the fifth gate is arranged between the second partition plate and the shell, and the third gate, the fourth gate and the fifth gate are used for opening or closing the air supply channel of the inner air outlet and the inner air return inlet or the outer fresh air inlet.
10. A method of controlling a heat pump air conditioning system, the heat pump air conditioning system including a heat pump air conditioning subsystem and the air supply subsystem of claim 9, the method comprising:
detecting an operation mode control instruction;
controlling an electric heating unit according to the operation mode control instruction, and controlling the heat pump air-conditioning subsystem to operate in a corresponding operation mode;
and controlling the opening and closing states of a plurality of gates of the air supply subsystem according to the operation mode control instruction so as to form a target air supply channel corresponding to the operation mode, wherein the target air supply channel comprises an inner circulation channel, an outer circulation channel and a defrosting channel.
11. The method of controlling a heat pump air conditioning system of claim 10, wherein controlling the open and closed states of a plurality of dampers of the air supply subsystem according to the operation mode control command to form a target air supply passage corresponding to the operation mode comprises:
detecting a heating inner loop control instruction;
and controlling the first gate of the air supply subsystem to close, controlling the second gate to open, controlling the third gate to close, controlling the fourth gate to open and controlling the fifth gate to close so as to form the internal circulation channel.
12. The method of controlling a heat pump air conditioning system according to claim 11, wherein said controlling an electric heating unit according to the operation mode control command includes:
acquiring the temperature of an inner air outlet of the air supply subsystem;
the temperature of the inner air outlet is smaller than a first temperature threshold value, the electric heating unit of the air supply subsystem is controlled to be started, or the temperature of the inner air outlet is larger than a second temperature threshold value, and the electric heating unit is controlled to be closed.
13. The method of controlling a heat pump air conditioning system of claim 11, wherein controlling the open and closed states of a plurality of dampers of the air supply subsystem according to the operation mode control command to form a target air supply passage corresponding to the operation mode comprises:
detecting a refrigeration internal circulation control instruction;
controlling the first gate to close, controlling the second gate to open, controlling the third gate to close, controlling the fourth gate to open, and controlling the fifth gate to close to form an internal circulation channel.
14. The method of controlling a heat pump air conditioning system of claim 11, wherein controlling the open and closed states of a plurality of dampers of the air supply subsystem according to the operation mode control command to form a target air supply passage corresponding to the operation mode comprises:
detecting a heating outer loop control instruction;
controlling the first gate to open, controlling the second gate to close, controlling the third gate to close, controlling the fourth gate to open, and controlling the fifth gate to close to form an external circulation channel.
15. The method of controlling a heat pump air conditioning system of claim 14, wherein said controlling an electrical heating unit according to said operating mode control command comprises:
acquiring the temperature of an inner air outlet of the air supply subsystem and the ambient temperature outside the air supply subsystem;
the temperature of the environment outside the vehicle is smaller than a third temperature threshold value, and the temperature of the air outlet is smaller than a fourth temperature threshold value, so that the electric heating unit is controlled to be started;
or, the ambient temperature outside the vehicle is greater than a fifth temperature threshold and the air outlet temperature is greater than a sixth temperature threshold, and the electric heating unit is controlled to be closed, wherein the fifth temperature threshold is greater than the third temperature threshold, and the sixth temperature threshold is greater than the fourth temperature threshold.
16. The method of controlling a heat pump air conditioning system of claim 11, wherein controlling the open and closed states of a plurality of dampers of the air supply subsystem according to the operation mode control command to form a target air supply passage corresponding to the operation mode comprises:
detecting a refrigeration external circulation control instruction;
controlling the first gate to open, controlling the second gate to close, controlling the third gate to close, controlling the fourth gate to open, and controlling the fifth gate to close to form an external circulation channel.
17. The method of controlling a heat pump air conditioning system according to claim 11,
the method for controlling the electric heating unit according to the operation mode control command comprises the following steps: controlling the electric heating unit to start heating;
controlling the opening and closing states of a plurality of gates of the air supply subsystem according to the operation mode control instruction so as to form a target air supply channel corresponding to the operation mode, wherein the method comprises the following steps: and when a defrosting control instruction is detected, the first gate is controlled to be opened, the second gate is controlled to be closed, the third gate is controlled to be opened, the fourth gate is controlled to be closed, and the fifth gate is controlled to be opened, so that a defrosting channel is formed.
CN202010551911.9A 2020-06-17 2020-06-17 Heat pump air conditioning system, air supply subsystem and method for controlling heat pump air conditioning system Active CN111762000B (en)

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CN113002266A (en) * 2021-03-22 2021-06-22 海信集团控股股份有限公司 Automobile and heat pump air conditioner
CN113500887B (en) * 2021-06-23 2023-08-18 青岛海尔空调器有限总公司 Vehicle-mounted air conditioner and vehicle
CN113593617B (en) * 2021-08-16 2022-06-17 湖南博匠信息科技有限公司 Control method of data storage disc case

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