CN214775776U

CN214775776U - Air conditioning system for vehicle

Info

Publication number: CN214775776U
Application number: CN202120687844.3U
Authority: CN
Inventors: 侯静霞; 李相岐
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-06
Filing date: 2021-04-06
Publication date: 2021-11-19
Anticipated expiration: 2031-04-06

Abstract

The utility model discloses an air conditioning system for vehicle, include: a refrigeration circuit; the refrigeration circuit comprises: the system comprises a compressor, an external heat exchanger, an internal heat exchanger, a demisting heat exchanger, a throttling device and a four-way valve, wherein an exhaust port of the compressor is selectively communicated with the external heat exchanger or the internal heat exchanger through the four-way valve; when the exhaust port of the compressor is communicated with the heat exchanger outside the vehicle, the demisting heat exchanger is communicated with the heat exchanger inside the vehicle; when the exhaust port of the compressor is communicated with the heat exchanger inside the vehicle, the demisting heat exchanger is communicated with the heat exchanger outside the vehicle. Realized all can realizing the defogging function simultaneously under refrigeration and the heating circumstances, on cold wind blows the person when having avoided under the wet and cold weather defogging, improved user experience nature.

Description

Air conditioning system for vehicle

Technical Field

The utility model relates to the field of automotive technology, especially, relate to an air conditioning system for vehicle.

Background

The automobile is a common vehicle for people to go out in daily life and is widely applied to people's daily life. An air conditioner is generally configured on an automobile to meet the requirements of a user for cooling or heating in different environments, and the air conditioner configured on a conventional automobile generally comprises a compressor, a condenser, a throttling device and an evaporator, wherein the compressor, the condenser and the evaporator are connected through a four-way valve, and the four-way valve is controlled to realize cooling and heating. However, in the actual use process, when the outside environment temperature is low and the humidity is high, the high-humidity air exhaled by the vehicle interior personnel is easily fogged in the vehicle interior, and further, the defogging operation is required. At this time, the air conditioner is generally switched to a cooling mode, the wet air in the vehicle is condensed into water on the heat exchanger in the vehicle and discharged, and meanwhile, the dry cold air is generated to carry out vaporization elimination treatment on the mist on the glass. However, since the temperature in the vehicle is very low, the air conditioner blows cold air during cooling, which leads to the temperature in the vehicle being reduced and affects the user experience, and on the other hand, the air conditioner changes from heating to cooling and demisting and then heats, which consumes a lot of energy and leads to high energy consumption. How to design a technique that user experience nature is good and reduce the car energy consumption is the utility model discloses the technical problem that will solve.

SUMMERY OF THE UTILITY MODEL

The utility model provides an air conditioning system for vehicle has realized all can realizing the defogging function simultaneously under refrigeration and the heating circumstances, and on cold wind blows the person when having avoided under the wet and cold weather defogging, improved user experience nature, the heat recovery function has been realized to the defogging when heating simultaneously to reduce the car energy consumption.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an air conditioning system for vehicle, include: a refrigeration circuit;

the refrigeration circuit comprises: the system comprises a compressor, an external heat exchanger, an internal heat exchanger, a demisting heat exchanger, a throttling device and a four-way valve, wherein an exhaust port of the compressor is selectively communicated with the external heat exchanger or the internal heat exchanger through the four-way valve; when the exhaust port of the compressor is communicated with the heat exchanger outside the vehicle, the demisting heat exchanger is communicated with the heat exchanger inside the vehicle; and when the exhaust port of the compressor is communicated with the heat exchanger in the vehicle, the demisting heat exchanger is communicated with the heat exchanger outside the vehicle.

Furthermore, when the vehicle air conditioning system executes the demisting in the refrigeration mode, the demisting heat exchanger is connected with the heat exchanger in the vehicle in series through the four-way valve.

Furthermore, when the vehicle air conditioning system executes the heating mode demisting, the demisting heat exchanger is connected with the external heat exchanger in series through the four-way valve.

Further, the device also comprises an air supply module;

the air supply module includes: air duct and in-vehicle fan, the air duct disposes air intake, air conditioner air outlet and defogging air outlet, inside main entrance, first subchannel and the second subchannel of forming in the air duct, the main entrance with the air intake intercommunication, first subchannel intercommunication air conditioner air outlet, the second subchannel intercommunication the defogging air outlet, in-vehicle fan sets up in the air intake department main entrance, in-vehicle heat exchanger sets up in the first subchannel, the defogging heat exchanger sets up in the second subchannel.

Further, a first air door is arranged in the main channel and used for selectively opening and closing the second sub-channel and/or the first sub-channel.

Furthermore, a switchable ventilation opening is further arranged between the first sub-channel and the second sub-channel.

Further, a second air door is arranged between the first sub-channel and the second sub-channel and used for selectively opening the ventilation opening.

Further, the second air door is used for selectively opening the ventilation opening and closing the air-conditioning outlet.

Further, the vent is located in front of the vehicle interior heat exchanger and the defogging heat exchanger in the air flowing direction.

The technical scheme of the utility model prior art relatively has following technological effect: the demisting device has the advantages that dry cold air is generated by the aid of the independent demisting heat exchanger for demisting, and in the actual use process, the demisting heat exchanger is controlled to be in a refrigerating state all the time by means of switching of the four-way valve under a refrigerating or heating mode of an air conditioner. Under the mode of heating in winter, the car is when the defogging, and the heat exchanger can normally heat and carry hot-air to the car in, and the defogging heat exchanger then produces dry air conditioning and comes to carry out defogging processing to the glass of car, and then realizes in the defogging in-process, reduces the fluctuation of the interior temperature of car, simultaneously, also avoids adjusting the car in as the refrigeration mode because of the winter defogging to effectual reduction energy consumption. More importantly, when defogging is carried out in the heating mode, the refrigerant in the defogging heat exchanger absorbs heat in the vehicle, is sent to the heat exchanger in the vehicle after being compressed by the compressor, and is conveyed to the vehicle again by the air supply system in the vehicle, so that the heat is recycled, and the energy consumption is reduced. Under the refrigeration mode in summer, the car is when the defogging, and defogging heat exchanger and interior heat exchanger of car have the refrigeration function simultaneously, have realized quick defogging and refrigeration, have improved refrigeration and defogging effect. Under the mode of independent defogging is carried out in winter or in the cloudy and humid season, the dry low temperature cold air that comes out through the defogging heat exchanger mixes the back with the high temperature air that comes out through the heat exchanger in the car, becomes dry comfortable air and both can clear away the fog on the glass rapidly, can guarantee again to keep comfortable temperature in the car.

Drawings

FIG. 1 is a schematic view of an air conditioning system for a vehicle according to the present invention;

FIG. 2 is a second schematic diagram of the vehicular air conditioning system of the present invention;

FIG. 3 is a third schematic view of the vehicular air conditioning system of the present invention;

FIG. 4 is a fourth schematic diagram of the vehicular air conditioning system of the present invention;

FIG. 5 is a fifth schematic view of the vehicular air conditioning system of the present invention;

fig. 6 shows a sixth schematic diagram of the vehicular air conditioning system of the present invention.

Reference numerals: the system comprises an external heat exchanger 101, an external fan 102, a four-way valve 103, a compressor 104, a throttling device 105, a gas-liquid separator 109, a demisting heat exchanger 110, an internal heat exchanger 111, an air duct 201, an air inlet 202, an internal fan 203, a first air door 204, a demisting air outlet 205, an air-conditioning air outlet 206 and a second air door 207.

Detailed Description

As shown in fig. 1, the present invention provides an air conditioning system for a vehicle, which includes a refrigeration circuit and an air supply module;

the refrigeration loop comprises a compressor 104, an external heat exchanger 101, an internal heat exchanger 111, a demisting heat exchanger 110, a throttling device 105 and a four-way valve 103, wherein the four-way valve 103 is provided with an H port, an I port, a J port and a K port, the H port is selectively communicated with the I port and the K port, the J port is selectively communicated with the I port and the K port, an exhaust port of the compressor 104 is connected with the H port, the external heat exchanger 101 is connected with the I port, the demisting heat exchanger 110 is connected with the J port, the internal heat exchanger 111 is connected with the K port, the throttling device is connected between the external heat exchanger 101 and the internal heat exchanger 111, and the demisting heat exchanger 110 is connected with an air suction port of the compressor 104 through a gas-liquid separator 109.

The air supply module includes: air duct 201 and fan 203 in the car, air duct 201 dispose air intake 202, air conditioner air outlet 206 and defogging air outlet 205, and air duct 201 is inside to form main entrance (not marked), first subchannel (not marked) and second subchannel (not marked), the main entrance communicates with air intake 202, first subchannel intercommunication air conditioner air outlet 206, second subchannel intercommunication defogging air outlet 205, fan 203 in the car sets up in the main entrance, heat exchanger 111 in the car sets up in the first subchannel, defogging heat exchanger 110 sets up in the second subchannel.

Specifically, the air conditioning system for a vehicle according to the present embodiment is mounted on a vehicle, the air blowing module is provided in the vehicle and is configured to blow air into the vehicle, the compressor 104 and the exterior heat exchanger 101 are provided in the vehicle and are located outside the vehicle, and the exterior heat exchanger 101 is provided with the exterior fan 102 to exchange heat.

The vehicle air conditioning system can meet the requirements of conventional automobile refrigeration and heating, and specifically comprises the following steps: when the automobile executes a cooling mode, the four-way valve 103 switches the exhaust port of the compressor 104 to be connected with the heat exchanger 101 outside the automobile, so that the heat exchanger 111 inside the automobile is used as an evaporator, under the action of the fan 203 inside the automobile, air enters the first sub-channel and exchanges heat with the heat exchanger 111 inside the automobile to form cold air, and the cold air is output to the inside of the automobile through the air outlet 206 of the air conditioner to cool the environment inside the automobile.

When the automobile executes a heating mode, the four-way valve 103 switches the exhaust port of the compressor 104 to be connected with the interior heat exchanger 111, so that the interior heat exchanger 111 serves as a condenser, under the action of the interior fan 203, air enters the first sub-channel and exchanges heat with the interior heat exchanger 111 to form hot air, and the hot air is output to the interior of the automobile through the air-conditioning air outlet 206 to heat the environment in the automobile.

When fog appears on glass in the automobile and demisting operation is required, the refrigerant flowing into the demisting heat exchanger 110 is a low-temperature refrigerant under the switching action of the four-way valve 103 no matter the automobile is in a cooling or heating mode, and the refrigerant flowing into the demisting heat exchanger 110 is the low-temperature refrigerant. Thus, when the demisting operation is performed, the wet air enters the second sub-channel and is condensed into water and discharged after being subjected to heat exchange with the demisting heat exchanger 110, and dry cold air is formed and output from the demisting air outlet so as to perform demisting treatment on the automobile glass mist.

Since the demister heat exchanger 110 is connected between the four-way valve 102 and the suction port of the compressor 104, the demister heat exchanger 110 is always supplied with a low-temperature refrigerant when the cooling and heating modes are switched. In the actual use process of a user, especially in a winter environment, hot air needs to be conveyed to the interior of the vehicle for heating treatment, so that the interior heat exchanger 111 serves as a condenser to heat the air. And the demisting heat exchanger 110 is independently arranged in the second sub-channel and can dehumidify the humid air to meet the demisting requirement. Therefore, when heating, the water vapor in the humid air can be condensed through the defogging heat exchanger 110 for defogging, and compared with the prior art that the water vapor needs to be converted into a refrigeration mode when defogging is carried out in the vehicle, the fluctuation range of the temperature in the vehicle can be effectively reduced, so that the user experience is improved; meanwhile, the heat exchanger 111 in the vehicle is always in a heating state in the defogging process under the heating mode, so that more heat loss caused by cold-hot switching of the heat exchanger 111 in the vehicle is avoided, and energy consumption is effectively reduced. In addition, when defogging is carried out under the heating mode, the refrigerant in the defogging heat exchanger absorbs heat in the vehicle, is sent to the heat exchanger in the vehicle after being compressed by the compressor, and is conveyed to the vehicle again by the air supply system in the vehicle, so that the heat recovery function is realized, on one hand, the requirement of defogging of glass in the vehicle can be met, on the other hand, the maximum reduction is excessive due to the temperature reduction in the vehicle during defogging, the temperature fluctuation range in the vehicle is reduced, the improvement of user experience is facilitated, and the reduction of the energy consumption of the vehicle is facilitated.

Further, in order to effectively control the opening and closing of the air supply channel to meet the air supply requirements of different working conditions, a first air door 204 is arranged between the second sub-channel and the first sub-channel, and the first air door 204 is used for selectively opening and closing the second sub-channel and/or the first sub-channel; or opening the first and second sub-channels simultaneously. Specifically, the first damper 204 can control the on-off of the second sub-channel, and when the defogging operation is required, the first damper 204 is opened to a specific position to open the first sub-channel and the second sub-channel, so that the air can flow into the second sub-channel to exchange heat with the defogging heat exchanger 110 to perform the defogging operation.

Preferably, a switchable vent (not labeled) is further provided between the first sub-channel and the second sub-channel. Specifically, in order to improve the defogging efficiency, especially in the cooling mode, the air in the first sub-channel enters the second sub-channel through the vent to increase the air output of the defogging air outlet 205, so as to improve the defogging efficiency.

To control the vent opening/closing, a second damper 207 may be disposed between the first sub-passage and the second sub-passage, and the second damper 207 may be used to selectively open the vent opening. Wherein the second damper 207 may also be used to selectively open the vent and close the outlet 206. Specifically, the vent and the air-conditioning outlet 206 can be selectively opened and closed by the second damper 207, and when the air-conditioning outlet 206 is in an open state, the vent is in a closed state, and conversely, when the air-conditioning outlet 206 is in a closed state, the vent is in an open state. And, with the arrangement position of the vent, the vent is located in front of the in-vehicle heat exchanger 111 and the defogging heat exchanger 110 in the air flow direction.

The utility model also provides an above-mentioned vehicle air conditioning system's control method, include:

when the refrigeration mode is executed, the demisting operation is carried out, and the four-way valve 103 controls the demisting heat exchanger 110 to be connected with the interior heat exchanger 111 in series; the four-way valve 103 controls the defogging heat exchanger 110 to be connected in series with the exterior heat exchanger 101 when the heating mode is performed.

Specifically, under the heating and cooling mode, through four-way valve 103 with defogging heat exchanger 110 with interior heat exchanger 111 of car or exterior heat exchanger 101 series connection, and then ensure to flow into microthermal refrigerant in the defogging heat exchanger 110 to satisfy the requirement of defogging.

The concrete control process for demisting in the refrigeration mode comprises the following steps: the first air door 204 opens the first sub-channel and the second sub-channel, the second air door 207 closes the vent and opens the air-conditioning air outlet 206, the air-conditioning air outlet 206 outputs cold air to adjust the temperature in the vehicle, and the demisting air outlet 205 outputs dry cold air to demist the glass of the vehicle; and the second damper 207 opens the vent and closes the air-conditioning outlet 206 in the case where the in-vehicle temperature reaches the set temperature. Specifically, as shown in fig. 2, the vehicle air conditioning system is in a cooling mode, at this time, the H port and the I port of the four-way valve 103 are connected, the K port and the J port are connected, and the system starts cooling. As shown in fig. 3, when the defogging operation is started during the cooling process, the first damper 204 is opened, the second damper 207 is opened, and the air outlet 206 is closed. When the temperature in the vehicle reaches the set temperature and the defogging is still opened, the second damper 207 closes the air-conditioning outlet 206 and opens the vent.

The concrete control process for demisting in the heating mode comprises the following steps: the first air door 204 opens the first sub-channel and the second sub-channel, the second air door 207 closes the vent and opens the air-conditioning air outlet 206, the air-conditioning air outlet 206 outputs hot air to adjust the temperature in the vehicle, and the demisting air outlet 205 outputs dry cold air to demist the glass of the vehicle; and after the demisting is completed, the first damper 204 closes the second sub-passage and keeps the first sub-passage open.

Specifically, as shown in fig. 4, the vehicle air conditioning system is in a heating mode, and at this time, H and K of the four-way valve 103 are turned on, and the system starts heating. As shown in fig. 5, after the defogging process is started during the heating process, the first damper 204 opens the first sub-channel and the second sub-channel to simultaneously open the defogging air outlet 205, and the second damper 207 closes the air outlet and opens the air conditioning air outlet 206. The air-conditioning outlet 206 blows hot air, and the demisting outlet 205 blows dry cold air. When the temperature in the vehicle reaches the set temperature and the defogging is still opened in the heating process: the second damper 207 opens the vent and closes the air outlet 206. Wherein, in the heating mode defogging process, defogging heat exchanger 110 absorbs the heat in the car and improves defogging heat exchanger 110's evaporating pressure, and then improves interior heat exchanger 111's condensing pressure, finally returns the car with the absorptive heat of defogging heat exchanger 110 in through heat exchanger 111 in the car in to furthest's reduction is excessive because of the interior temperature drop of car when the defogging, and reduces the energy consumption.

Further, the control method further comprises: in the single demisting mode, the four-way valve 103 controls the demisting heat exchanger 110 to be connected with the exterior heat exchanger 101 in series, the first air door 204 opens the first sub-channel and the second sub-channel, and the second air door 207 opens the vent and closes the air-conditioning outlet 206. Specifically, as shown in fig. 6, when a separate defogging is required: the H port and the K port of the four-way valve 103 are communicated, the I port and the J port are communicated, the first sub-channel and the second sub-channel are opened by the first air door 204 to open the demisting air outlet 205, and the vent is opened by the second air door 207 to close the air conditioner air outlet 206. The system starts demisting, wherein one part of air in the air inlet 202 passes through the demisting heat exchanger 110 and then becomes low-temperature dry air, the other part of air passes through the in-vehicle heat exchanger 111 and then becomes high-temperature low-humidity air, the two parts of air are mixed into comfortable and dry air in the second sub-channel, and after the air is blown to the windshield of the automobile, fog beads on the automobile glass are vaporized to realize demisting.

The technical scheme of the utility model prior art relatively has following technological effect: by arranging the independent demisting heat exchanger and arranging the independent air duct in the air duct for demisting and air supply, in the actual use process, when the air conditioner is in a cooling or heating mode, the four-way valve is switched to control the demisting heat exchanger to be always in a cooling state, further realizing that the heat exchanger in the automobile can normally heat and convey hot air to the interior of the automobile when the automobile is demisted in the heating mode in winter or in the shade and cool season, the demisting heat exchanger condenses the vapor in the air into water to be discharged, the dry air is formed to vaporize and demist the fog beads on the glass, thereby reducing the fluctuation of the temperature in the vehicle during the defogging process, avoiding the condition that the interior of the vehicle is adjusted to a refrigeration mode due to the defogging in winter, effectively reducing the energy consumption, in the defogging process, the heat in the vehicle absorbed by the defogging heat exchanger is conveyed to the inner side of the vehicle again through the air conditioning system, so that the heat recovery is realized. Under the refrigeration mode in summer, the car is when the defogging, and defogging heat exchanger and interior heat exchanger of car have the refrigeration function simultaneously, have realized quick defogging and refrigeration, have improved refrigeration and defogging effect. Under the mode of independent defogging is carried out in winter or in the cloudy and humid season, the dry low temperature cold air that comes out through the defogging heat exchanger mixes the back with the high temperature air that comes out through the heat exchanger in the car, becomes dry comfortable air and both can clear away the fog on the glass rapidly, can guarantee again to keep comfortable temperature in the car.

The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An air conditioning system for a vehicle, comprising: a refrigeration circuit;

2. The vehicle air conditioning system of claim 1, wherein the defogging heat exchanger is arranged in series with the interior heat exchanger via the four-way valve when the vehicle air conditioning system is performing a defogging operation in a cooling mode.

3. The vehicle air conditioning system of claim 1, wherein the defogging heat exchanger is disposed in series with the exterior heat exchanger via the four-way valve when the vehicle air conditioning system is performing a heating mode defogging.

4. The vehicle air conditioning system according to any one of claims 1 to 3, further comprising an air supply module;

5. The vehicle air conditioning system according to claim 4, wherein a first damper is provided in the main passage, and the first damper is used for selectively opening and closing the second sub-passage and/or the first sub-passage.

6. The vehicle air conditioning system of claim 5, further comprising a switchable vent between the first sub-path and the second sub-path.

7. The vehicle air conditioning system of claim 6, wherein a second damper is disposed between the first and second sub-passages for selectively opening the vent.

8. The vehicle air conditioning system of claim 7, wherein the second damper is configured to selectively open the vent and close the air conditioning outlet.

9. The vehicle air conditioning system of claim 6, wherein the vent is located forward of the in-vehicle heat exchanger and the defogging heat exchanger in an air flow direction.