Air conditioning system, control method thereof, and vehicle

Abstract

The application provides an air conditioning system and a control method thereof, and a vehicle, wherein the air conditioning system comprises an evaporator, a heater and a fan which are sequentially arranged in a main air duct, the main air duct has a first air inlet and an air outlet group, the first air inlet is provided with a rotatable first air door, the first air door has a first position for shielding the evaporator, when the first air door is in the first position and the fan is running, the airflow entering from the first air inlet sequentially flows through the heater, the fan and the air outlet group. According to the application, when the air conditioning system is heating, the first air door is controlled to switch to the first position, which shields the evaporator while opening the first air inlet, and the heater and the fan are started, so that the airflow entering from the first air inlet does not flow through the evaporator, but directly flows to the heater, thereby eliminating the airflow attenuation caused by passing through the evaporator, and significantly improving the airflow by about 20%, thereby improving the heating capacity and heating effect, and improving the user experience.

Description

TECHNICAL FIELD

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

[0002] The use environment of an air conditioner for vehicles is complex. In order to ensure clean air outlet and avoid the influence of dirty and blocked evaporators on effects, most air conditioners for vehicles are provided with filter screens or return air treatment devices. However, since the evaporator is in a low-temperature state for a long time during operation, condensate water is easily generated on the surface of the evaporator. After the air conditioner stops running, the residual condensate water on the evaporator is easily contaminated with dust and bacteria, and over time, odor is generated, which affects the air outlet quality. In addition, the single-cooling air conditioner for vehicles on the market produces two times of air volume attenuation when heating, and thus causes additional heating loss. Therefore, from the perspective of users, it is necessary to improve the air outlet quality and heating effect of the air conditioner, and thus improve the use health and user experience of the air conditioner. SUMMARY

[0003] Therefore, the present application provides an air conditioning system, which can overcome the problem that the single-cooling air conditioner for vehicles produces two times of air volume attenuation when heating, and thus causes additional heating loss, and further affects the user experience.

[0004] In order to solve the above problems, the present application provides an air conditioning system, which comprises an evaporator, a heater and a fan, the evaporator, the heater and the fan are sequentially arranged in a main air duct, the main air duct has a first air inlet and an air outlet group, the first air inlet is between the evaporator and the heater, the air outlet group is on a side of the fan away from the heater, a first air door is arranged at the first air inlet and is rotatable, the first air door has a first position for shielding the evaporator, when the first air door is in the first position and the fan is running, the airflow entering from the first air inlet sequentially flows through the heater, the fan and the air outlet group.

[0005] In some embodiments, the main air duct is provided with a bypass air duct outside, the air outlet group comprises a bypass air outlet, one end of the bypass air duct is in communication with the bypass air outlet, and the other end of the bypass air duct is in communication with the main air duct, the main air duct further has an exhaust outlet, the exhaust outlet is on a side of the evaporator away from the first air door, when the first air door is in the first position and the fan is running, the airflow blown out from the bypass air outlet sequentially flows through the bypass air duct, the evaporator and the exhaust outlet.

[0006] In some embodiments, a bypass air door is arranged at the bypass air outlet and is rotatable, the bypass air door is used for opening or closing the bypass air outlet.

[0007] In some embodiments, the main air duct further has a second air inlet, which is also located at the side of the evaporator away from the first air door, and the first air door further has a second position to close the first air inlet, when the first air door is in the second position and the fan is running, the air flow entering from the second air inlet sequentially flows through the evaporator, the heater, the fan and the air outlet group.

[0008] In some embodiments, the heater is provided with a rotatable shielding component, which has a third position to shield the heater, when the shielding component is in the third position, the first air door is in the second position and the fan is running, the air flow entering from the second air inlet sequentially flows through the evaporator, the fan and the air outlet group.

[0009] In some embodiments, the shielding component further has a fourth position to make the air flow pass through the heater, when the shielding component is in the fourth position, the first air door is in the first position and the fan is running, the air flow entering from the first air inlet sequentially flows through the heater, the fan and the air outlet group.

[0010] In some embodiments, the second air inlet and the exhaust air outlet are adjacent, and a rotatable second air door is provided between the second air inlet and the exhaust air outlet, the second air door has a fifth position to close the exhaust air outlet to make the second air inlet in an open state and a sixth position to close the second air inlet to make the exhaust air outlet in an open state.

[0011] In some embodiments, the air outlet group further includes a plurality of main air outlets to blow air in different directions.

[0012] In some embodiments, each of the main air outlets is provided with a main air door, and each of the main air doors is used to open or close the corresponding main air outlet.

[0013] The application further provides a control method of an air conditioning system, which is used to control the operation of the above-mentioned air conditioning system, and the control method includes: obtaining the operation mode of the air conditioning system; according to the operation mode, controlling the first air door, the shielding component, the second air door to be in the corresponding positions respectively, controlling the fan to run, and controlling the bypass air door and each main air door to be open or closed.

[0014] In some embodiments, when the air conditioning system runs in a heating mode, the first air door is controlled to be in the first position, the shielding component is controlled to be in the fourth position, the fan is controlled to run, the bypass air door is controlled to be closed, and each main air door is controlled to be open.

[0015] In some embodiments, when the air conditioning system runs the self-cleaning drying mode, the first damper is controlled to be in the first position, the blocking component is controlled to be in the fourth position, the fan is controlled to run, the bypass damper is controlled to be opened, each of the main dampers is controlled to be closed, and the second damper is controlled to be in the sixth position.

[0016] In some embodiments, when the air conditioning system runs the cooling mode, the second damper is controlled to be in the fifth position, the first damper is controlled to be in the second position, the blocking component is controlled to be in the third position, the fan is controlled to run, and the bypass damper is controlled to be closed.

[0017] The present application also provides a vehicle comprising the air conditioning system described above.

[0018] The present application provides an air conditioning system and a control method thereof, and a vehicle. When the air conditioning system runs the heating mode, the first damper is controlled to be switched to the first position, which forms a block to the evaporator while opening the first air inlet, the heater is turned on, and the fan is turned on. The air flow entering through the first air inlet directly flows to the heater, and the air flow is heated when flowing through the heater. The heated air flow flows through the fan and is finally blown to the vehicle interior by the air outlet group. Since the air flow does not pass through the evaporator during the entire journey, the air volume attenuation caused by the return air passing through the evaporator during the heating mode is eliminated, and the air volume is significantly increased by about 20%, thereby improving the heating capacity and heating effect, and further improving the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 FIG. 1 is a schematic view of the air conditioning system of the present application in the heating mode;

[0020] Figure 2 FIG. 2 is a schematic view of the air conditioning system of the present application in the heating mode for defrosting and self-cleaning of the evaporator;

[0021] Figure 3 FIG. 3 is a schematic view of the air conditioning system of the present application in the cooling mode for frosting of the evaporator surface;

[0022] Figure 4 FIG. 4 is a schematic view of the air outlet group of the air conditioning system of the present application.

[0023] The reference signs are as follows:

[0024] 1, evaporator; 2, heater; 3, fan; 4, main air duct; 5, first air inlet; 6, air outlet group; 61, bypass air outlet; 62, bypass damper; 63, main air outlet; 64, main damper; 7, first damper; 8, bypass air duct; 9, exhaust air outlet; 10, second air inlet; 11, shielding component; 12, second damper; 13, condenser; 14, condenser fan; 15, compressor; 16, throttle valve. DETAILED DESCRIPTION

[0025] CONJUNCTION WITH Figures 1 to 4 As shown, according to the embodiment of the present application, an air conditioning system is provided, comprising: an evaporator 1, a heater 2 and a fan 3, the evaporator 1, the heater 2 and the fan 3 are sequentially arranged in a main air duct 4, the main air duct 4 has a first air inlet 5 and an air outlet group 6, the first air inlet 5 is between the evaporator 1 and the heater 2, the air outlet group 6 is on the side of the fan 3 away from the heater 2, the first air inlet 5 is provided with a rotatable first damper 7, the first damper 7 has a first position shielding the evaporator 1, when the first damper 7 is in the first position and the fan 3 is running, the airflow entering from the first air inlet 5 sequentially flows through the heater 2, the fan 3 and the air outlet group 6. In this technical solution, when the single-cooling + electric heating air conditioning system of the present application is applied to a vehicle, the positions of the evaporator 1, the heater 2 and the fan 3 in the air conditioning system have been optimized and adjusted, and the first damper 7 is provided at the first air inlet 5. Therefore, when the air conditioning system is heating, the first damper 7 can be controlled to switch to the first position, which not only opens the first air inlet 5 but also shields the evaporator 1, and at the same time, the heater 2 is turned on and the fan 3 is running, then the airflow entering from the first air inlet 5 will directly flow to the heater 2, the airflow is heated while flowing through the heater 2, the heated airflow flows through the fan 3, and finally is blown to the vehicle interior by the air outlet group 6. Since the airflow does not pass through the evaporator 1 during the entire journey, the air volume attenuation caused by the heating return air passing through the evaporator 1 is eliminated, which can significantly increase the air volume by about 20%, thereby improving the heating capacity and heating effect, and further improving the user experience. The heater 2 adopts electric heating, and the first damper 7 rotates around the side close to the evaporator 1 as the shaft.

[0026] CONJUNCTION WITH Figure 2As shown, the bypass air duct 8 is arranged outside the main air duct 4, and the air outlet group 6 comprises a bypass air outlet 61, one end of the bypass air duct 8 is communicated with the bypass air outlet 61, and the other end is communicated with the main air duct 4. The main air duct 4 further has an air exhaust port 9 which is located at the side of the evaporator 1 away from the first air door 7. When the first air door 7 is in the first position and the fan 3 is running, the airflow blown out by the bypass air outlet 61 flows through the bypass air duct 8, the evaporator 1 and the air exhaust port 9 in sequence. When the evaporator 1 needs to be defrosted for self-cleaning, the air conditioning system is controlled to run in the heating mode, and then the hot air blown out by the bypass air outlet 61 will blow to the evaporator 1 through the bypass air duct 8. In the process of the hot air flowing through the evaporator 1, the frost on the surface of the evaporator 1 can be melted, and the melted frost water can wash the fins of the evaporator 1, and at the same time, rely on the reverse air outlet to blow out the debris remaining in the fins, so as to achieve the effect of self-cleaning. Then the hot air continues to blow to the evaporator 1 until the water on the surface of the evaporator 1 is dried, so that the generation of bacteria is inhibited, and at the same time, the high-temperature air can be used to remove the bacteria on the surface of the evaporator 1, and when the air conditioning system is in the cooling mode, the quality of the air blown into the vehicle can be improved. Finally, the hot air after drying the evaporator 1 is blown out of the vehicle through the air exhaust port 9 to prevent it from polluting the air in the vehicle.

[0027] Specifically, the bypass air outlet 61 is provided with a rotatable bypass air door 62, which is used to open or close the bypass air outlet 61. When the air conditioning system runs in the heating mode and does not need to defrost or remove bacteria from the evaporator 1, the bypass air door 62 can be used to close the bypass air outlet 61 to prevent the hot air blown into the vehicle from being divided.

[0028] For reference Figure 3 As shown, the main air duct 4 further has a second air inlet 10 which is also located at the side of the evaporator 1 away from the first air door 7. The first air door 7 further has a second position for closing the first air inlet 5. When the air conditioning system runs in the cooling mode, the first air door 7 is controlled to switch to the second position, and then the first air inlet 5 is closed, and the heater 2 is controlled not to work. In the case that the fan 3 is running, the airflow enters from the second air inlet 10, and in the process of the airflow passing through the evaporator 1, it exchanges heat with the evaporator 1 to form cold air, which flows through the heater 2 and the fan 3 and is blown into the vehicle through the air outlet group 6, thereby realizing cooling. The air conditioning system is provided with two air inlets, which can realize cooling and heating under the premise of ensuring that the air volume attenuation can be reduced when heating. When the evaporator 1 needs to frost for self-cleaning, the frosting process on the surface of the evaporator 1 is as follows: when the air conditioning system runs in the cooling mode, the speed of the fan 3 is reduced, and the surface of the evaporator 1 will frost rapidly due to insufficient heat exchange.

[0029] As a specific embodiment, the heater 2 is below the fan 3. A rotatable shielding part 11 is arranged on the heater 2, one side of the shielding part 11 is connected to an end of the heater 2 away from the first air inlet 5, and the shielding part 11 rotates about the side. The shielding part 11 has a third position shielding the heater 2, when the shielding part 11 is in the third position and the first air door 7 is in the second position, the shielding part 11 shields the heater 2, and the shielding part 11 and the first air door 7 abut to form a smooth transition. At this time, the fan 3 operates, and the airflow entering from the second air inlet 10 flows through the evaporator 1 and the fan 3 in turn, and is blown into the vehicle by the air outlet group 6, so that the air conditioning system can prevent cold air from flowing through the heater 2 when cooling, thereby reducing the air volume attenuation when cooling.

[0030] For reference Figure 1 When the shielding part 11 is arranged to shield the heater 2 to reduce the air volume attenuation of the air conditioning system when cooling, the airflow path of the air conditioning system when heating also needs to be considered. The shielding part 11 also has a fourth position for making the airflow pass through the heater 2, when the shielding part 11 is switched to the fourth position, the shielding part 11 forms a barrier between the first air inlet 5 and the fan 3, forcing the airflow entering from the first air inlet 5 to completely pass through the heater 2 to be heated before flowing through the fan 3, and then being blown out by the air outlet group 6. In this way, while ensuring the airflow path, it can also prevent part of the airflow entering from the first air inlet 5 from being blown out from the air outlet group 6 without being heated by the heater 2, thereby improving the heating effect.

[0031] Specifically, the second air inlet 10 is adjacent to the exhaust air outlet 9, and a rotatable second air door 12 is arranged between the second air inlet 10 and the exhaust air outlet 9. The second air door 12 has a fifth position closing the exhaust air outlet 9 to make the second air inlet 10 in an open state, and a sixth position closing the second air inlet 10 to make the exhaust air outlet 9 in an open state. The second air door 12 rotates about one side thereof. The second air door 12 can prevent air from flowing between the second air inlet 10 and the exhaust air outlet 9, and ensure that the airflow only enters from the second air inlet 10 when the air conditioning system operates in a cooling mode, and that the airflow only flows out from the exhaust air outlet 9 when the air conditioning system operates in a self-cleaning drying mode.

[0032] For reference Figure 4 As shown in the figure, the air outlet group 6 also includes a plurality of main air outlets 63 that blow air in different directions. These main air outlets 63 are divided into window blowing air outlets, face blowing air outlets, and foot blowing air outlets to achieve different air outlet or multiple air outlet combination air outlet requirements.

[0033] As a specific implementation, each main air outlet 63 is provided with a main air door 64, and each main air door 64 is used to open or close the corresponding main air outlet 63. Each main air door 64 rotates around one side of the main air door 64. By providing a main air door 64 at each main air outlet 63, the opening and closing of each main air outlet 63 can be flexibly controlled according to actual needs.

[0034] The application further provides a control method of the air conditioning system, which is used for controlling the operation of the air conditioning system. The control method comprises the following steps: obtaining the operation mode of the air conditioning system; controlling the first air door 7, the shielding component 11, and the second air door 12 to be in the corresponding positions respectively according to the operation mode, controlling the operation of the air blower 3, and controlling the opening or closing of the bypass air door 62 and each main air door 64.

[0035] When the air conditioning system operates in the heating mode, the first air door 7 is controlled to be in the first position, the shielding component 11 is controlled to be in the fourth position, the air blower 3 is controlled to operate, the bypass air door 62 is controlled to be closed, and each main air door 64 is controlled to be opened. Then, the first air door 7 shields the evaporator 1, and the airflow entering from the first air inlet 5 does not flow through the evaporator 1, so that the evaporator 1 does not form wind resistance to the airflow. At the same time, the shielding component 11 forms a block between the first air inlet 5 and the air blower 3, so that the airflow flows through the heater 2 for heating before flowing through the air blower 3, thereby improving the heating effect. The heated hot air is not divided by the bypass air duct 8, but is blown into the vehicle by each main air door 64.

[0036] When the air conditioning system operates in the self-cleaning and drying mode, the evaporator 1 surface will have frost, the first air door 7 is controlled to be in the first position, the shielding component 11 is controlled to be in the fourth position, the air blower 3 is controlled to operate, the bypass air door 62 is controlled to be opened, each main air door 64 is controlled to be closed, and the second air door 12 is controlled to be in the sixth position. Then, the first air door 7 shields the evaporator 1, and the airflow does not flow through the evaporator 1, so that the evaporator 1 does not form wind resistance to the airflow. At the same time, the shielding component 11 forms a block between the first air inlet 5 and the air blower 3, so that the airflow flows through the heater 2 for heating before flowing through the air blower 3, thereby improving the heating effect. The heated hot air is blown out only by the bypass air outlet 61 and blown to the evaporator 1 through the bypass air duct 8 for defrosting, self-cleaning, and drying, so that the defrosting and drying efficiency can be improved, and the hot air flowing through the evaporator 1 is finally discharged out of the vehicle through the air outlet 9.

[0037] When the air conditioning system is running in the cooling mode, the second damper 12 is controlled to be in the fifth position, the first damper 7 is controlled to be in the second position, the shielding part 11 is controlled to be in the third position, the fan 3 is controlled to run, the bypass damper 62 is controlled to be closed, and the main dampers 64 are controlled to be opened. Then the second air inlet 10 is opened and the first air inlet 5 is closed, so that the air current enters from the second air inlet 10 and becomes cold air after heat exchange with the evaporator 1. At the same time, the shielding part 11 shields the heater 2, so that the heater 2 does not form air resistance to the cold air. Finally, the cold air is blown to the vehicle interior through the main dampers 64 after flowing through the fan 3, so as to ensure the cooling effect. When the evaporator 1 needs to frost for self-cleaning, the rotation speed of the fan 3 can be reduced under the condition that the air conditioning system runs in the cooling mode, so that the evaporator 1 surface rapidly frosts due to insufficient heat exchange.

[0038] Of course, the present application is not only suitable for the single-cooling vehicle air conditioning system, but also suitable for the heat pump air conditioning + electric heater auxiliary heating air conditioning system.

[0039] The present application also provides a vehicle comprising the above air conditioning system.

[0040] It is easy for those skilled in the art to understand that the above-mentioned advantageous modes can be freely combined and superimposed without conflict.

[0041] The above is only the preferred embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. The above is only the preferred embodiment of the present application, and it should be pointed out that, for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications shall be regarded as the protection scope of the present application.

Claims

1. An air conditioning system, characterized by, The application relates to an air conditioner, which comprises an evaporator (1), a heater (2) and a fan (3), the evaporator (1), the heater (2) and the fan (3) are sequentially arranged in a main air duct (4), the main air duct (4) is provided with a first air inlet (5) and an air outlet group (6), the first air inlet (5) is located between the evaporator (1) and the heater (2), the air outlet group (6) is located on the side of the fan (3) away from the heater (2), the first air inlet (5) is provided with a rotatable first air door (7), the first air door (7) has a first position for shielding the evaporator (1), when the first air door (7) is in the first position and the fan (3) is running, the air current entering from the first air inlet (5) sequentially flows through the heater (2), the fan (3) and the air outlet group (6).

2. The air conditioning system of claim 1, wherein, The main air duct (4) is provided with a bypass air duct (8) outside, the air outlet group (6) comprises a bypass air outlet (61), one end of the bypass air duct (8) is communicated with the bypass air outlet (61), the other end of the bypass air duct (8) is communicated with the main air duct (4), the main air duct (4) is further provided with an air exhaust outlet (9), the air exhaust outlet (9) is located on the side of the evaporator (1) away from the first air door (7), when the first air door (7) is in the first position and the fan (3) is running, the air current blown out from the bypass air outlet (61) sequentially flows through the bypass air duct (8), the evaporator (1) and the air exhaust outlet (9).

3. The air conditioning system of claim 2, wherein, The bypass air outlet (61) is provided with a rotatable bypass air door (62), the bypass air door (62) is used for opening or closing the bypass air outlet (61).

4. The air conditioning system of claim 2, wherein, The main air duct (4) is further provided with a second air inlet (10), the second air inlet (10) is also located on the side of the evaporator (1) away from the first air door (7), the first air door (7) further has a second position for closing the first air inlet (5), when the first air door (7) is in the second position and the fan (3) is running, the air current entering from the second air inlet (10) sequentially flows through the evaporator (1), the heater (2), the fan (3) and the air outlet group (6).

5. The air conditioning system of claim 4, wherein, The heater (2) is provided with a rotatable shielding component (11), the shielding component (11) has a third position for shielding the heater (2), when the shielding component (11) is in the third position, the first air door (7) is in the second position and the fan (3) is running, the air current entering from the second air inlet (10) sequentially flows through the evaporator (1), the fan (3) and the air outlet group (6).

6. The air conditioning system of claim 5, wherein, The shielding component (11) further has a fourth position for making the air current pass through the heater (2), when the shielding component (11) is in the fourth position, the first air door (7) is in the first position and the fan (3) is running, the air current entering from the first air inlet (5) sequentially flows through the heater (2), the fan (3) and the air outlet group (6).

7. The air conditioning system of claim 6, wherein, The second air inlet (10) and the air outlet (9) are adjacent, and a second air door (12) rotatable is arranged between the second air inlet (10) and the air outlet (9), the second air door (12) has a fifth position closing the air outlet (9) so that the second air inlet (10) is in an open state, and a sixth position closing the second air inlet (10) so that the air outlet (9) is in an open state.

8. The air conditioning system of claim 7, wherein, The air outlet group (6) further comprises a plurality of main air outlets (63) for air outlet in different directions.

9. The air conditioning system of claim 8, wherein, Each of the main air outlets (63) is provided with a main air door (64), and each of the main air doors (64) is used for opening or closing each of the main air outlets (63).

10. A control method of an air conditioning system, characterized by, The control method for controlling the operation of the air conditioning system of claim 9, when the bypass air door (62) rotatable is arranged at the bypass air outlet (61), the bypass air door (62) is used for opening or closing the bypass air outlet (61), the control method comprises: Obtaining the operation mode of the air conditioning system; According to the operation mode, the first air door (7), the shielding component (11), the second air door (12) are controlled to be in the corresponding positions respectively, the fan (3) is controlled to operate, and the bypass air door (62) and each main air door (64) are controlled to be opened or closed.

11. The control method according to claim 10, characterized by, When the air conditioning system operates in a heating mode, the first air door (7) is controlled to be in the first position, the shielding component (11) is controlled to be in the fourth position, the fan (3) is controlled to operate, the bypass air door (62) is controlled to be closed, and each main air door (64) is controlled to be opened.

12. The control method according to claim 10, characterized by, When the air conditioning system operates in a self-cleaning drying mode, the first air door (7) is controlled to be in the first position, the shielding component (11) is controlled to be in the fourth position, the fan (3) is controlled to operate, the bypass air door (62) is controlled to be opened, each main air door (64) is controlled to be closed, and the second air door (12) is controlled to be in the sixth position.

13. The control method according to claim 10, characterized by, When the air conditioning system operates in a cooling mode, the second air door (12) is controlled to be in the fifth position, the first air door (7) is controlled to be in the second position, the shielding component (11) is controlled to be in the third position, the fan (3) is controlled to operate, the bypass air door (62) is controlled to be closed, and each main air door (64) is controlled to be opened.

14. A vehicle characterized by comprising: The air conditioning system of any one of claims 1 to 9. The air conditioning system of any one of claims 1 to 9.

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