CN217048191U - Vehicle air conditioner and vehicle - Google Patents

Abstract

The utility model relates to a vehicle technical field specifically provides a vehicle air conditioner and vehicle, aims at solving the inefficiency of current vehicle air conditioner drying evaporator, the poor problem of effect. The utility model provides a vehicle air conditioner includes air conditioning cabinet and evaporimeter core, constructs the wind channel that supplies the circulation of air in the air conditioning cabinet, is provided with fan, evaporimeter core and heating core in the wind channel, vehicle air conditioner still includes the control unit, the control unit with fan and heating core communication connection, the wind channel is constructed to be closed through the control unit after vehicle air conditioner stops refrigerating; the heating core and the fan are configured to be operated by the control unit after the air duct is closed, and generate hot and humid air; the air duct is also configured to be able to be opened by the control unit after the hot and humid air is formed, so that the hot and humid air can be discharged to the environment outside the vehicle, thereby drying the evaporator core. The utility model provides a vehicle air conditioner can promote drying efficiency, the lowering system energy consumption of evaporimeter.

Description

Vehicle air conditioner and vehicle

Technical Field

The utility model relates to the technical field of vehicles, specifically provide an air conditioner for vehicle and vehicle.

Background

The vehicle air conditioner is an important device capable of improving the comfort of the environment in the vehicle, and particularly in hot summer, the quality of air in a vehicle cabin can be maintained at a better level by using the vehicle air conditioner.

In the refrigerating process of the vehicle air conditioner, a large amount of condensed water is generated by an evaporator arranged in an air conditioning box, and the condensed water is discharged to an external environment through a condensed water outlet arranged below the evaporator. After the air conditioning of automobile-used air conditioning is finished, partial comdenstion water can be attached to the surface of evaporator core and form the water film, adsorbs dust, bacterium etc. in the wind channel, and the summer temperature is higher in addition, and the environment of damp and hot promotes mould to breed, and mould metabolism can produce the peculiar smell, treats to open automobile-used air conditioner once more after, the peculiar smell in the wind channel gets into the cabin along with the air current, reduces the air quality in the cabin, brings uncomfortable sense for the user, influences the user health.

Therefore, how to avoid the generation of the odor has become a problem to be solved urgently in the existing automobile manufacturers. As an improvement, patent application with publication number CN111873748A provides a method for keeping the evaporator of an air conditioner of an automobile dry, specifically, after the automobile is turned off, a driver of a mixing damper is set to a highest heat gear, the air conditioner is turned on in an internal circulation mode, and an air outlet mode is adjusted to a foot blowing mode, so that the evaporator is dried by driving the mixing damper to the hottest position, simultaneously setting the air conditioner to be in an internal circulation mode, setting the air outlet mode to the foot blowing mode, and rapidly returning the air to the evaporator by using the waste heat of a heating core. Although this scheme can promote the drying of evaporimeter, owing to need set up the air-out mode into blowing the foot mode in drying process, and can discharge hot-blastly to the cabin in air cycle in-process, not only can promote the temperature in the cabin rapidly, reduce the air quality, bring the discomfort for the user, can make the user whether to close the air conditioner successfully oneself moreover and create the doubt, user experience is relatively poor.

Patent application publication No. CN107521303A provides a method for preventing mildew and mold odor of a vehicle, and in particular, in a situation where a vehicle cabin is unoccupied, the method assists in drying the evaporator and preventing mold growth by discharging an air flow passing through the evaporator to the outside of the passenger compartment by operating a motor of a fan in an air duct in a reverse direction, and heating the air flow passing through the evaporator with a heater. However, the application scenario of the scheme is very limited, and the scheme is only applicable to the situation that no passenger or driver exists in the vehicle cabin, the drying efficiency of the evaporator is not high, and the user experience is also poor.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving or alleviating above-mentioned technical problem at least, solve or alleviate the inefficiency of current vehicle air conditioner drying evaporator, the poor problem of effect promptly.

In a first aspect, the present invention provides a vehicle air conditioner, which includes an air conditioning box and an evaporator, wherein the evaporator includes an evaporator core, an air duct for circulating air is configured in the air conditioning box, a fan, the evaporator core and a heating core are disposed in the air duct, the vehicle air conditioner further includes a control unit, the control unit is in communication connection with the fan and the heating core, wherein the air duct is configured to be closed by the control unit after the vehicle air conditioner stops cooling; the heating core and the fan are configured to be operated by the control unit after the air duct is closed, so that hot air capable of circulating is formed in the air duct by the heating core and the fan, and the hot air carries away condensate water precipitated on the surface of the evaporator core in the process of flowing through and is converted into humid hot air; the duct is further configured to be openable by the control unit after the hot humid air is formed so that the hot humid air can be directly discharged to an environment outside the vehicle, thereby drying the evaporator core.

The utility model provides a vehicle air conditioner, through constructing the wind channel into can stopping to be sealed through the control unit after refrigerating at vehicle air conditioner, construct fan and heating core into can be sealed the back through the control unit operation in the wind channel, utilize the fan to make the circulation of air in the wind channel, utilize the heating core to make circulation's air intensification, so, circulation's hot-air constantly blows to the evaporimeter core, make evaporimeter core surface residual moisture evaporation with higher speed, in the process, because the wind channel seals, the heat that the heating core sent can be utilized fully, make the air temperature in the wind channel continuously rise, moisture evaporation with higher speed, realize the quick drying of evaporimeter core, promote the drying efficiency of evaporimeter. In addition, because the wind channel is sealed through the control unit in the drying process, the hot air of production can not get into the car interior environment, avoids causing the influence to the car interior environment, can keep the travelling comfort of car interior environment, also can not cause the puzzlement for the user simultaneously. When the moisture on the surface of the evaporator core is dried, the generated damp and hot air is directly discharged to the environment outside the vehicle from the air channel, and the discharge efficiency of the damp and hot air is very high due to the limited amount of the damp and hot air in the air channel, so that the drying stage and the dehumidifying stage in the drying process can reach very high efficiency, the efficiency of the whole drying process of the evaporator is further improved, the emitted heat energy can be fully utilized, the energy consumption of the system is reduced, and the drying of the evaporator is realized in a high-efficiency and low-energy consumption mode.

It is understood that the air duct may be an additional air duct dedicated to the drying evaporator, or may be a multiplex of existing cool/warm air ducts. When the existing cold air/warm air duct is reused as the drying air duct, the air duct can be closed and opened by means of the original air doors of the cold air/warm air duct.

In addition, the discharge of the damp and hot air in the air duct may be the discharge of all damp and hot air, and the process needs to realize the complete replacement of the damp and hot air and the air in the environment outside the vehicle, and the replacement process can be promoted by the operation of the fan. Most of the moist and hot air can be exhausted only by the pressure difference existing inside and outside the air duct without providing the power required by air replacement. Although a small part of humid and hot air can be reserved in the air duct after the internal and external pressure differences are balanced, the influence on the environment in the air duct can be ignored because the quantity of the humid and hot air is very small. The solution by means of a pressure difference is more energy efficient than the solution with a complete displacement.

It should be noted that "directly discharge" in the present invention means that the hot and humid air directly enters the external environment from the air duct without passing through the internal environment of the vehicle, but the discharge process of the hot and humid air can be directly discharged by opening the air door, and can also be directly discharged through the original pipeline such as the condensate pipe.

With regard to the vehicle air conditioner described above, in some possible embodiments, the air duct is provided with a ventilation portion including a first ventilation portion that can communicate with an environment inside the vehicle and a second ventilation portion that can communicate with an environment outside the vehicle, and the control unit is in communication with the operating mechanisms of the first ventilation portion and the second ventilation portion so that the air duct can be closed by closing the first ventilation portion and the second ventilation portion after the vehicle air conditioner stops cooling.

Thus, an implementation mode of reusing the existing cold air/warm air duct as a drying duct is provided. By adopting the scheme, the control unit controls the control structures of the first ventilation part and the second ventilation part to seal the air channel after the vehicle air conditioner stops refrigerating, so that the evaporator core is in a closed environment, and compared with a drying air channel special for the evaporator core, the cost is lower and the control is more convenient.

Under the normal condition, the vehicle air conditioner can realize two modes of internal circulation and external circulation, wherein the internal circulation is that the air in a vehicle cabin performs self-circulation, and an air duct at least needs to ensure that a first ventilation part is communicated with the environment in the vehicle during the internal circulation; the external circulation is to replace the air in the cabin with the air outside the cabin, and the air duct needs to ensure that the first ventilation part is communicated with the environment in the vehicle and the second ventilation part is communicated with the environment outside the vehicle during the external circulation.

With respect to the vehicle air conditioner described above, in some possible embodiments, the first ventilation section includes a return air inlet and an air outlet.

With respect to the vehicle air conditioner described above, in some possible embodiments, the second ventilating section includes a fresh air inlet and a condensed water outlet.

It can be understood that the return air inlet is an air inlet of the air duct in the internal circulation process, and the air outlet is an air outlet of the air duct. An air return inlet of a conventional air conditioning box is not provided with an air door, so that the cost is saved, and peculiar smell in an air duct can be reduced. The utility model discloses in be provided with the air door in the return air entrance.

With regard to the above-described air conditioner for a vehicle, in some possible embodiments, the duct is configured to open the second ventilation portion by the control unit after the formation of the hot and humid air so that the hot and humid air can be directly discharged to an environment outside the vehicle.

Open the second through the control unit and ventilate the position and make damp and hot air directly discharge to the car external environment in the wind channel, can avoid damp and hot air to cause the influence to the car internal environment, and then avoid reducing the air quality in the car.

It can be understood that the opening of the second ventilation part by the control unit can be realized by opening a fresh air inlet, and the damp and hot air is directly discharged through the fresh air inlet, and the discharge process can utilize the pressure difference between the inside and the outside of the air channel; or opening a condensed water outlet to discharge the damp and hot air, wherein the discharge process can also utilize the pressure difference between the inside and the outside of the air duct; or the damp and hot air is discharged through the fresh air inlet and the condensed water outlet at the same time, so that the discharge efficiency of the damp and hot air is improved. The above schemes do not need to improve the existing air conditioner structure for the vehicle too much.

With respect to the above-described vehicle air conditioner, in some possible embodiments, the heating core and the fan are configured to be able to be stopped by the control unit before the second ventilating section is turned on.

When the humidity of the evaporator core body is reduced to a preset humidity threshold value, the second ventilation position can be started to discharge the damp and hot air in the air duct, the heating core body and the fan are stopped before the second ventilation position is started, the damp and hot air in the air duct can be discharged only by means of the air pressure difference between the inside and the outside of the air duct and the inertia after the fan stops rotating, and therefore unnecessary energy consumption can be avoided.

It will be appreciated that the heater core and fan may also be deactivated at the same time as or after the second ventilation location is activated.

In addition, the heating core body can be stopped simultaneously, or the heating core body can be stopped by the control unit before the fan.

With respect to the vehicle air conditioner described above, in some possible embodiments, the heating core is configured to be deactivated prior to the fan.

Through making the heating core stop to move earlier than the fan, can accelerate the effluvium of waste heat with the help of the fan promptly after the heating core stops to generate heat continuously, be favorable to prolonging the life-span of heating core.

For the vehicle air conditioner described above, in some possible embodiments, the heating core is a PTC heating core and/or a heater core.

It is understood that the air temperature can be raised by the heater core for a vehicle not equipped with the PTC heating core, such as a common fuel vehicle, the air temperature can be raised by the PTC heating core for a vehicle not equipped with the heater core, such as an electric vehicle, and the air temperature can be raised by the PTC heating core and the heater core for a vehicle type equipped with both the PTC heating core and the heater core to achieve efficient heating. In addition, the heating core body can also be formed by a common electric heating pipe.

In a second aspect, the present invention further provides a vehicle, wherein the vehicle comprises the air conditioner for a vehicle according to any one of the above technical solutions.

As can be understood by those skilled in the art, since the vehicle is provided with the vehicle air conditioner according to any one of the foregoing technical solutions, all technical effects that can be obtained by the vehicle air conditioner are achieved, and are not described herein again.

Drawings

The disclosure of the present invention will become more readily understood with reference to the accompanying drawings. As is readily understood by those skilled in the art: these drawings are for illustrative purposes only and are not intended to limit the scope of the present disclosure. Further, like numbers are used to indicate like parts throughout the drawings, in which:

fig. 1 is a schematic cross-sectional view of an air conditioning box according to an embodiment of the present invention, in which the air circulation state in the air duct in the internal circulation cooling mode is shown;

fig. 2 is a schematic cross-sectional view of an air conditioning box according to an embodiment of the present invention, in which the air circulation state in the air duct is shown when the evaporator core is dried;

fig. 3 is a block flow diagram of a method provided by an embodiment of the present invention;

list of reference numerals:

1. an air conditioning cabinet; 10. a box body; 100. an air duct; 1000. a fresh air inlet; 1001. an air return inlet; 1002. a defrost outlet; 1003. a blowing surface outlet; 1004. a foot-blowing outlet; 1005. a condensed water outlet; 101. a fresh air door; 102. drying the air door; 103. defrosting air doors; 104. a face blowing air door; 105. a foot blowing air door; 11. an air filter; 12. a fan; 13. an evaporator core; 14. a warm air core body; 15. the PTC heats the core.

Detailed Description

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.

Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the invention. It will be understood by those skilled in the art that the present invention may be practiced without some of these specific details.

It should be noted that the terms "first" and "second" are used herein for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The embodiment of the utility model provides a vehicle air conditioner includes compressor, condenser, expansion valve, evaporimeter and connects thereby these parts in order and form the pipeline that supplies the refrigerant circulation. The evaporator is arranged in the air-conditioning box, and the condenser, the compressor, the expansion valve and the like are arranged outside the air-conditioning box.

Fig. 1 is a schematic cross-sectional structural diagram of an air conditioning box according to an embodiment of the present invention, wherein a state of air circulation in an air duct in an internal circulation cooling mode is shown.

Referring to fig. 1, an air duct 100 is formed in a casing 10 of an air conditioning case 1, and an air filter 11, a fan 12, an evaporator core 13, a warm air core 14, and a PTC heating core 15 are sequentially disposed in the air duct 100 of the air conditioning case 1 as viewed in a clockwise direction. The air filter 11 serves to filter impurities in the air flowing through the duct 100 and thus purify the air. The fan 12 is used to promote air circulation within the duct 100. The evaporator core 13 is used to provide cooling energy to the air flowing through the air duct 100 during cooling of the vehicle air conditioner. The PTC heating core 15 and the heater core 14 are used to provide heat to the air circulating in the air duct 100 when the vehicle air conditioner is heating. The PTC heating core body 15 is formed by combining a plurality of single-chip ceramics in parallel and then cementing the single-chip ceramics and corrugated aluminum strips at high temperature, has the advantages of small thermal resistance, high heat exchange efficiency and low power attenuation in long-term use, and also has the advantage of high safety performance compared with electric heating, namely when the fan 12 stops rotating, the power of the PTC heating core body is automatically and rapidly reduced because the PTC heating core body cannot be fully radiated, the surface temperature of the PTC heating core body is maintained at a set value, and the phenomenon that the surface of an electric heating tube heater turns red is avoided. PTC heating core 15 is used for auxiliary heating in a fuel-fired vehicle.

With continued reference to FIG. 1, the air chute 100 is provided with a first vent location that is communicable with the interior environment of the vehicle and a second vent location that is communicable with the exterior environment of the vehicle.

Specifically, the first ventilation portion includes a return air inlet 1001 and an air outlet, wherein the air outlet includes a defrosting outlet 1002, a blowing surface outlet 1003 and a blowing foot outlet 1004, the air at the defrosting outlet 1002 is directed to the front windshield and the door glasses on both sides, the air at the blowing surface outlet 1003 is directed to the body of the passenger, and the air at the blowing foot outlet 1004 is directed to the foot position of the passenger. The blowing surface outlet 1003 is usually further provided with an air guide member, and the air outlet direction and the air outlet amount of the blowing surface outlet 1003 can be adjusted through the air guide member. In addition, a defrosting damper 103, a blowing face damper 104, and a blowing foot damper 105 are provided in the air duct 100, respectively, for controlling opening and closing of the defrosting outlet 1002, the blowing face outlet 1003, and the blowing foot outlet 1004, respectively.

In this embodiment, the second ventilating portion includes a fresh air inlet 1000 and a condensed water outlet 1005. Fresh air door 101 is arranged at fresh air inlet 1000, and opening and closing of fresh air inlet 1000 are controlled through fresh air door 101. A condensate outlet 1005 is provided below the evaporator core 13, and a condensate pipe is connected to the condensate outlet 1005 and controls the on/off of the pipeline through a valve provided.

Furthermore, the embodiment of the utility model provides an in vehicle air conditioner still includes the control unit, control unit and fan and heating core (including PTC heating core and warm braw core) communication connection, this control unit still with the operating mechanism (including the operating mechanism of being connected with new trend air door 101, dry air door 102, defrosting air door 103, face blowing air door 104 etc.) communication connection at first ventilation position, second ventilation position to can the independent control fan, heat the action of core and each air door.

The vehicle air conditioner can realize two circulation modes: an internal circulation mode and an external circulation mode, wherein the circulation mode is generally determined by a user according to the air quality (such as PM2.5, temperature, humidity and the like) of the environment outside the vehicle and the requirement of the user. No matter what kind of circulation mode is adopted, at least one outlet of the air outlet communicated with the environment in the vehicle needs to be in an open state.

When the vehicle air conditioner is in the internal circulation mode, the return air inlet 1001 is in an open state, and the fresh air inlet 1000 is in a closed state. Specifically, taking the summer opening internal circulation refrigeration mode as an example, when the vehicle air conditioner performs refrigeration operation, the drying air door 102 is in an open state, the fresh air door 101 and the defrosting air door 103 are in a closed state, the condensate water pipeline is in a connected state, and the face blowing air door 104 is preferentially opened and the foot blowing air door 105 is closed in a normal condition during refrigeration, so that the body feeling is more comfortable, energy conservation is facilitated, and the air circulation path is as shown in fig. 1. When the compressor and fan 12 are activated, the fan 12 causes air in the duct 100 to circulate in a clockwise direction, creating a negative pressure at the return air inlet 1001, which causes cabin air to enter the duct 100. Air in the air duct 100 is filtered by the air filter 11, passes through the evaporator core 13, exchanges heat with low-temperature refrigerant in the evaporator core 13 and is converted into cold air, and the cold air is conveyed through the air duct 100 section at the lower part of the air conditioning box 1 and enters the cabin through the blowing surface outlet 1003, so that internal circulation of the air is realized.

When the vehicle air conditioner is in an external circulation mode, the fresh air inlet 1000 is in an open state, the return air inlet 1001 can be in a closed state, and the return air inlet 1001 can also be in an open state, because the distance between the fresh air inlet 1000 and the return air inlet 1001 is relatively long, and the fresh air inlet 1000 is adjacent to the fan 12, when the fresh air inlet 1000 is in an open state, the influence of the fan 12 on the pressure at the return air inlet 1001 is small, the return air inlet 1001 does not need to be further closed, and therefore the existing vehicle air conditioner usually does not configure an air door for the return air inlet 1001.

Taking the winter mode of heating by external circulation as an example, the fresh air door 101 is in an open state, the drying door 102 is in a closed state, and the condensate pipeline is in an on state, and during heating, the foot blowing door 105 is preferably opened to close the face blowing door 104. When the fan 12 is started, the fan 12 causes the air in the air duct 100 to circulate clockwise, negative pressure is formed at the fresh air inlet 1000, the air outside the cabin enters the air duct 100 through the fresh air inlet 1000 due to the start of the fan 12, the air in the air duct 100 is filtered by the air filter 11 and then passes through the warm air core 14 and/or the PTC heating core 15, and the warm air core 14 and/or the PTC heating core 15 releases heat to heat the air in the air duct 100, so that the air is blown out from the foot blowing outlet 1004 after being converted into warm air. When the glass needs to be defrosted, the defrosting outlet 1002 can be opened at the same time, and part of the hot air is blown out from the defrosting outlet 1002.

It can be understood that although the internal circulation mode can make the air temperature in the vehicle cabin reach the target temperature quickly, the long-time internal circulation can make the oxygen concentration in the vehicle cabin decrease and the carbon dioxide concentration increase, so that the vehicle air conditioner needs to be switched between the internal circulation mode and the external circulation mode when running in summer and winter to ensure the freshness of the air in the vehicle.

After the vehicle air conditioner refrigeration, evaporator core 13's surface has moisture to remain, based on foretell vehicle air conditioner structure, the utility model provides a method of vehicle air conditioner evaporator can realize the rapid draing of evaporimeter, and the energy consumption of drying process is lower.

Specifically, in the vehicle air conditioner of the embodiment of the present invention, the air duct is configured to be closed after the vehicle air conditioner stops cooling; the heating core and the fan are configured to operate after the air duct is closed, so that hot air capable of circulating is formed in the air duct by means of the heating core and the fan, and the hot air takes away condensed water precipitated on the surface of the evaporator core in a flow process and is converted into damp hot air; the air duct is also configured to be opened after the hot humid air is formed so that the hot humid air can be directly discharged to the environment outside the vehicle, thereby drying the evaporator core.

Further, since the air duct is provided with the first ventilation portion and the second ventilation portion, the air duct is configured such that the first ventilation portion and the second ventilation portion are closed after the cooling of the vehicle air conditioner is stopped. Wherein, first ventilation position includes aforementioned return air entry and air outlet, and the second ventilation position includes aforementioned new trend entry and comdenstion water export.

Based on the above structure of the vehicle air conditioner, a control method of the vehicle air conditioner is provided below.

Example 1

As shown in fig. 2 and 3, an embodiment of the present invention provides a method for drying an evaporator of an air conditioner for a vehicle, including:

and S10, sealing the air duct after the vehicle air conditioner stops cooling.

Specifically, for example, internal circulation refrigeration is performed, when the vehicle air conditioner performs refrigeration, the drying air door and the face blowing air door are in an open state, the fresh air door, the defrosting air door and the foot blowing air door are in a closed state, the condensate pipeline is in a connected state, and air in the air channel is converted into cold air under the action of the evaporator and enters the vehicle cabin, so that the temperature in the vehicle cabin is reduced.

The embodiment of the utility model provides an among the method, the wind channel is constructed to be sealed after vehicle air conditioner stops to refrigerate, consequently, makes the wind channel seal after vehicle air conditioner stops to refrigerate to this comes to construct a closed environment for drying process. Specifically, the drying air door, the fresh air door, the face blowing air door, the foot blowing air door and the defrosting air door are controlled to be in a closed state, and meanwhile, a condensate water outlet is sealed. In the process of making each air door be in the closed state, a logic for judging the open-close state can be added for controlling each air door, when the air door is judged to be in the closed state, the original state can be maintained, and when the air door is judged to be in the open state, the air door can be controlled to be closed.

And S20, operating the heating core and the fan so as to form hot air capable of circulating in the air duct by means of the heating core and the fan, wherein the hot air takes away the condensate water precipitated on the surface of the evaporator core in the process of flowing through and converts the condensate water into damp hot air.

Specifically, after each damper is controlled to close the air duct, the heating core and the fan may be operated simultaneously, or the fan may be operated prior to the heating core, where the heating core in this embodiment is a PTC heating core, and the fan is operated prior to the PTC heating core. After the fan and the PTC heating core operate, the PTC heating core continuously transfers heat to the air in the air duct, the air temperature rapidly rises and becomes circulating hot air, and the air circulation state is as shown in fig. 2. The high-temperature air flow circulates and flows through the surface of the evaporator core body, the volatilization of moisture is accelerated, an environment similar to a steam box is created for the evaporator, the moisture on the surface of the evaporator core body is evaporated to dryness, and in the process, the hot air takes away the condensed water separated out from the surface of the evaporator core body and is converted into humid hot air.

In the drying process, because the wind channel seals, the heat loss that the PTC heating core sent is less, and most heat is used for promoting the air temperature, compares with the scheme that the wind channel is in the open mode among the current drying process, the utility model discloses a heat utilization of scheme increases substantially.

And S30, directly discharging the wet hot air from the air duct to the environment outside the vehicle so as to dry the evaporator core.

After the humidity on the surface of the evaporator core reaches a preset humidity threshold value, which indicates that the drying stage of the evaporator core is completed, a dehumidification stage needs to be further entered to discharge the generated hot and humid air. Because the wind channel is in the confined state in the drying stage, the pressure rising in the wind channel can be made to inside air at the in-process that changes into damp and hot air, and then there is pressure differential inside and outside the wind channel after the drying stage is accomplished, and this embodiment utilizes this pressure differential to realize the automatic emission of damp and hot air, and then can further reduce the energy consumption of drying process.

Specifically, the following steps are performed:

and S300, stopping the operation of the heating core body and the fan.

And the energy consumption of the system can be reduced by stopping the operation of the heating core after the water is evaporated. The wet and hot air can be promoted to be discharged by utilizing the pressure difference between the inside and the outside of the air duct, so that the energy consumption of the system can be further reduced by stopping the operation of the fan. In order to protect the PTC heating core, the utility model provides a PTC heating core constructs into and stops the operation earlier than the fan.

And S301, directly discharging the damp and hot air from the air channel to the environment outside the vehicle by opening the second ventilation part.

The utility model discloses in, second ventilation position contains a plurality of vents, as long as one of them vent is in the open mode, then second ventilation position is in the open mode.

Specifically, the air duct in this embodiment is configured such that the second vent portion is opened after the formation of the hot humid air, and the process of directly discharging the hot humid air in the air duct is that the condensate outlet is opened after the blower is stopped, and the hot humid air on the high pressure side is spontaneously discharged to the environment outside the vehicle on the low pressure side via the condensate outlet and the condensate pipe connected to the condensate outlet by the difference between the internal pressure and the external pressure of the air duct, so that the hot humid air is discharged from the condensate outlet.

Therefore, the rapid drying of the evaporator core is realized, and the drying process is short in time, low in energy consumption and high in efficiency.

It should be noted that the stop of the fan refers to the power failure of the motor for driving the fan in the fan, and the fan may continue to rotate due to inertia after the power failure of the motor, so that the fan may still be in a rotating state after the stop of the fan, and the discharge speed of the hot and humid air may be accelerated by the inertial rotation of the fan.

Example 2

The present embodiment will be described by taking an example in which an air conditioner for a vehicle performs external circulation cooling.

The method for drying the vehicle air conditioner evaporator provided by the embodiment comprises the following steps:

and T10, closing the air duct after the vehicle air conditioner stops cooling.

Specifically, when the vehicle air conditioner is used for refrigeration, the fresh air door, the drying air door and the face blowing air door are in an open state, the defrosting air door and the foot blowing air door are in a closed state, and the condensate pipeline is in a connected state. After the vehicle air conditioner stops refrigerating, the drying air door, the fresh air door, the face blowing air door, the foot blowing air door and the defrosting air door are controlled to be in a closed state, and meanwhile, a condensate water outlet is sealed. Similar to step S10, each damper can be ensured to be in the closed state by the open/close judgment logic.

And T20, operating the heating core and the fan so as to form hot air capable of circulating in the air duct by means of the heating core and the fan, wherein the hot air takes away the condensate water precipitated on the surface of the evaporator core in the process of flowing through and is converted into damp hot air.

Specifically, this step refers to step S20 in embodiment 1.

T30, directly discharging the wet and hot air from the air duct to the environment outside the vehicle, so that the evaporator core is dried.

Similarly to step S30 in embodiment 1, this embodiment also uses the difference between the inside and outside pressure of the air duct to discharge the hot and humid air. The difference from embodiment 1 is that the present embodiment discharges hot and humid air through the fresh air inlet.

Specifically, the following steps are performed:

and T300, stopping the operation of the heating core and the fan.

This step refers to step S300 in embodiment 1.

And T301, directly discharging the damp and hot air from the air channel to the environment outside the vehicle by opening the second ventilation part.

Specifically, in this embodiment, the process of discharging the hot and humid air in the air duct by opening the second ventilation portion is to open the fresh air damper after the fan stops running, and by using the difference between the inside pressure and the outside pressure of the air duct, the hot and humid air on the high pressure side can be spontaneously directly discharged to the environment outside the vehicle on the low pressure side through the fresh air inlet, so that the hot and humid air can be smoothly discharged.

It can be understood that the fresh air door and the condensate outlet can be opened simultaneously to accelerate the discharge of damp and hot air.

After the damp and hot air is discharged, the fresh air door and the condensate water outlet are restored to the closed state, and the drying air door is restored to the open state.

It should be noted that the method of the present invention is applicable to electric vehicles and also to fuel vehicles.

So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the present invention, and the technical scheme after the changes or substitutions will fall within the protection scope of the present invention.

Claims (9)

1. The vehicle air conditioner is characterized by comprising an air conditioner box and an evaporator, wherein the evaporator comprises an evaporator core body, an air duct for circulating air is constructed in the air conditioner box, a fan, the evaporator core body and a heating core body are arranged in the air duct, the vehicle air conditioner also comprises a control unit, the control unit is in communication connection with the fan and the heating core body,

wherein the air duct is configured to be closed by the control unit after the vehicle air conditioner stops cooling;

the heating core and the fan are configured to be operated by the control unit after the air duct is closed, so that hot air capable of circulating is formed in the air duct by the heating core and the fan, and the hot air carries away condensate water precipitated on the surface of the evaporator core in the process of flowing through and is converted into humid hot air;

the duct is further configured to be openable by the control unit after the hot humid air is formed so that the hot humid air can be directly discharged to an environment outside the vehicle, thereby drying the evaporator core.

2. The vehicle air conditioner according to claim 1, wherein the air duct is provided with a ventilation portion including a first ventilation portion that can communicate with an in-vehicle environment and a second ventilation portion that can communicate with an out-vehicle environment, and the control unit is in communication connection with an operating mechanism of the first ventilation portion and the second ventilation portion so that the air duct can be closed by closing the first ventilation portion and the second ventilation portion after the vehicle air conditioner stops cooling.

3. The vehicle air conditioner of claim 2, wherein the first ventilation location comprises a return air inlet and an outlet.

4. The air conditioner according to claim 2 or 3, wherein the second ventilating section includes a fresh air inlet and a condensed water outlet.

5. The vehicle air conditioner according to claim 2, wherein the duct is configured to be able to open the second ventilation portion by the control unit after the hot and humid air is formed, so that the hot and humid air can be directly discharged to an environment outside a vehicle.

6. The vehicle air conditioner according to claim 5, wherein the heating core and the fan are configured to be able to be stopped by the control unit before the second ventilating section is turned on.

7. The vehicle air conditioner of claim 6, wherein the heating core is configured to be deactivated by the control unit prior to the fan.

8. The vehicle air conditioner according to claim 7, wherein the heating core is a PTC heating core and/or a heater core.

9. A vehicle characterized by comprising the vehicular air conditioner of any one of claims 1 to 8.

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