Air conditioning system, air conditioning control method and vehicle

Abstract

The invention relates to an air conditioner system, an air conditioner control method and a vehicle, and belongs to the technical field of air conditioner control. Air enters the air conditioning system through the air inlet duct, the main air duct is communicated with the air inlet duct and communicated to an air outlet unit of the air conditioning system, the air blower is arranged in the air blower duct, and the heat dissipation duct is arranged at the rear end of the air blower duct. When the temperature of the air blower rises and reaches a preset condition, the controller controls the heat dissipation air channel to communicate with the outside of the air conditioning system. The air conditioning system can be used for a vehicle. By adding the heat dissipation air duct, the air blower temperature detection strategy is designed. The air conditioning system and the control method thereof have the effects of improving the working efficiency of the air conditioning system and reducing the energy consumption of the air conditioning system.

Description

Technical Field

[0001] This application relates to the technical field of air conditioner control, and particularly relates to an air conditioning system, an air conditioner control method, and a vehicle. Background Art

[0002] In an air conditioning system, a blower is a key component to ensure the efficient operation of the air conditioning system and provide a comfortable indoor environment. It generates an air flow by rotating blades, pushing air to flow in the air conditioning system, and ensuring uniform distribution of cold and hot air to each room or area. The blower blows air over the surfaces of the evaporator and condenser, improving the heat exchange efficiency and making the refrigeration or heating effect more significant.

[0003] During the operation of the blower, heat is generated. If this part of the heat is transferred to the supply air flow, it may increase the outlet air temperature and the total heat load of the air conditioning system. Especially in the cooling mode, the heat generated by the air conditioner blower is taken away by the cooling air and enters the air conditioning box, resulting in an increase in the temperature of the air discharged from the air conditioning box, which will increase the cooling burden of the air conditioner. To ensure the cooling effect, the compressor needs to provide more cooling capacity.

[0004] Application Content

[0005] This application solves at least one of the technical problems in the related art to a certain extent, and provides an air conditioning system, an air conditioner control method, and a vehicle.

[0006] To achieve the above object, in a first aspect, this application provides an air conditioning system, including:

[0007] An intake air duct: for the intake air of the air conditioning system;

[0008] A main duct: located at the rear end of the intake air duct along the intake air direction, communicating with the intake air duct, and communicating with the air outlet unit of the air conditioning system;

[0009] A blower duct: located at the rear end of the main duct along the intake air direction, with a blower installed inside;

[0010] A heat dissipation duct: located at the rear end of the blower duct along the intake air direction, which can be selectively connected to the main duct or the outside of the air conditioning system;

[0011] A controller: configured to control the heat dissipation duct to be connected to the outside of the air conditioning system when the air conditioning system is operating in the cooling mode and the blower temperature rises to reach a preset condition.

[0012] In the embodiments of the present application, a heat dissipation air duct is additionally designed on the air conditioning system, and the heat dissipation air duct is located at the rear end of the blower. When the temperature of the blower rises to a certain level in the cooling mode, the heat dissipation air duct of the blower is opened. After the air flowing into the air conditioner passes through the blower, it flows out through the heat dissipation air duct to the outside of the air conditioning system, discharging the heat of the blower to the outside of the air conditioning system, and being able to dissipate the heat of the blower. The air conditioning system provided by the present application can solve the problem of heat dissipation of the air conditioning blower, especially the problem of the influence of the heat of the blower on the refrigeration effect under the refrigeration condition. The refrigeration efficiency of the air conditioning system is improved, and the refrigeration energy consumption of the air conditioning system is reduced.

[0013] In combination with the first aspect, in some implementation manners of the first aspect, the air inlet air duct includes an internal circulation air duct and an external circulation air duct that can be selectively opened;

[0014] The controller is configured to, when the air conditioning system operates in the cooling mode and the temperature of the blower rises to reach a preset condition, control the heat dissipation air duct to communicate with the outside of the air conditioning system,

[0015] and control to increase the air inflow volume of the external circulation air duct.

[0016] In the embodiments of the present application, considering that the structures of air conditioning systems vary in different application fields. For example, some household air conditioners only have an internal circulation mode, some household air conditioners have both internal and external circulation modes, and vehicle-mounted air conditioners have both internal and external circulation modes. For an air conditioning system with an external circulation air duct, the present application proposes a cooling structure and a cooling strategy for the blower. This cooling strategy has various combined implementation forms. For example, when the temperature of the blower rises to a certain level, the heat dissipation air duct of the blower is opened to cool the blower; it is also possible to choose to simultaneously open the external circulation air duct, and the air inlet system introduces external circulation air. Since the temperature of the external circulation air relative to the position of the blower is low, it can also produce a cooling effect on the air conditioning blower, which will improve the rapid cooling speed of the air conditioning blower.

[0017] In combination with the first aspect, in some implementation manners of the first aspect, the controller is further configured to:

[0018] When the temperature of the blower rises to reach a preset condition, control the heat dissipation air duct to communicate with the outside of the air conditioning system, and control the increased air inflow volume through the external circulation air duct to be equal to the air volume discharged to the outside of the air conditioning system through the heat dissipation air duct.

[0019] In the embodiments of the present application, on the one hand, exhausting a part of the air volume of the air conditioning system to the outside of the air conditioning system will reduce the internal air flow rate of the air conditioning system. On the other hand, since the temperature outside the air conditioning system is relatively lower than the temperature at the position of the air conditioning blower, and the way of introducing the outside circulation air can increase the fluidity of the gas and cool the air conditioning blower faster. However, if the air volume flowing out through the heat dissipation air duct and the air volume introduced through the outside circulation air duct are not equal, it will cause a change in the air volume at the air outlet unit position of the subsequent air conditioning system, affecting the comfort of the user. Based on this, the air intake volume increased through the outside circulation air duct is controlled to be equal to the air volume discharged to the outside of the air conditioning system through the heat dissipation air duct. At this time, the air volume flowing through the air outlet unit of the air conditioning system can remain unchanged, ensuring the comfort of the user.

[0020] In combination with the first aspect, in some implementation manners of the first aspect, an air outlet flow meter is arranged at the position of the air outlet of the heat dissipation air duct inside or in the heat dissipation air duct, and an air intake flow meter is arranged at the position of the air intake of the outside circulation air duct or inside the outside circulation air duct. The controller is connected to the air outlet flow meter and the air intake flow meter to count and control the air intake flow rate and the air outlet flow rate.

[0021] In the embodiments of the present application, the gas volume flowing into through the outside circulation air duct and the gas volume flowing out through the heat dissipation air duct are calculated according to the positions of the two flow meters, so as to facilitate the control of the air intake flow rate and the air outlet flow rate.

[0022] In combination with the first aspect, in some implementation manners of the first aspect, the air intake air duct includes an internal circulation air duct and an outside circulation air duct that can be selectively opened; the controller is configured to: in the cooling mode, control to open the internal circulation air duct and close the outside circulation air duct; when the temperature of the blower rises and reaches a preset condition, control the heat dissipation air duct to communicate with the outside of the air conditioning system; control to open the outside circulation air duct.

[0023] In the embodiments of the present application, for an air conditioning system having an internal circulation air duct and an outside circulation air duct, in the cooling mode, the common working mode is to only open the internal circulation air duct at the beginning of starting the cooling mode. To solve the problem of blower heat dissipation in this common mode, when starting the cooling mode, control to open the internal circulation air duct and close the outside circulation air duct, and when the temperature of the blower is too high, then open the outside circulation air duct, which can meet the control requirements of the common air conditioning working mode.

[0024] In combination with the first aspect, in some implementation manners of the first aspect, the air conditioning system further includes:

[0025] The first temperature sensor: arranged outside the air conditioning system for detecting the outside temperature of the air conditioning system;

[0026] The second temperature sensor: arranged in the heat dissipation air duct or the blower air duct, and located at the rear end of the blower along the air intake direction;

[0027] The controller is connected to the first temperature sensor and the second temperature sensor to obtain the temperature detection values of the two temperature sensors;

[0028] The preset condition is that the detection value of the first temperature sensor is less than the temperature detection value of the second temperature sensor.

[0029] In the embodiment of the present application, since it is necessary to start the blower cooling according to the temperature of the blower, in order to be able to detect the temperature of the blower and set the preset condition, two temperature sensors are respectively set to detect the temperature outside the air-conditioning system and the position where the blower is located. Among them, the sensor for detecting the temperature of the blower has multiple optional installation positions. The blower air duct is closest to the blower and can reflect the temperature change of the blower; while the heat dissipation air duct is located at the rear end of the blower, and the air flowing through the blower will inevitably flow through the heat dissipation air duct. Therefore, the air flowing through the heat dissipation air duct can reflect the heat of the blower to a certain extent. Therefore, it is also possible to choose to set the second temperature sensor in the heat dissipation air duct. When the detection value of the first temperature sensor is less than the temperature detection value of the second temperature sensor, it means that the temperature of the blower has risen to a certain extent and cooling can be carried out.

[0030] In combination with the first aspect, in some implementation manners of the first aspect, the air-conditioning system further includes: the preset condition is that the detection value of the first temperature sensor is less than the temperature detection value of the second temperature sensor, and the temperature difference reaches a first threshold.

[0031] In the embodiment of the present application, if the cooling of the blower is started when the detection value of the first temperature sensor is less than the temperature detection value of the second temperature sensor, it may cause excessive cooling of the blower and affect the normal operation of the air-conditioning system. To solve this problem, a first threshold is further set, and the cooling of the blower is started after the temperature difference between the blower temperature and the outside of the air-conditioning system reaches a certain degree, so as to avoid the influence on the operation of the air-conditioning system caused by the frequent switching of the air duct during the blower cooling process.

[0032] In combination with the first aspect, in some implementation manners of the first aspect, a heat dissipation air damper is provided in the heat dissipation air duct, and the controller is connected to the heat dissipation air damper to control the opening degree of the heat dissipation air damper so as to control the air volume flowing from the heat dissipation air duct to the main air duct and the outside of the air-conditioning system.

[0033] In the embodiment of the present application, in order to solve the problem of the connection direction of the heat dissipation air duct, a heat dissipation air damper can be provided inside the heat dissipation air duct. The heat dissipation air damper is controlled by the controller and can choose to completely or partially connect the heat dissipation air duct to the main air duct, or completely or partially connect it to the outside of the air-conditioning system, which can solve the problem of flexible control of the air flow direction in the heat dissipation air duct.

[0034] In combination with the first aspect, in certain implementations of the first aspect, a circulation air damper is provided in the intake air duct, and the controller is connected to the circulation air damper to control the opening degree of the circulation air damper so as to control the air volume flowing into the main air duct through the external circulation air duct.

[0035] In the embodiments of the present application, in order to solve the problem of the control of the internal circulation and the external circulation in the circulation air duct, a circulation air damper can be provided inside the circulation air duct. The circulation air damper is controlled by the controller and can selectively connect the intake air duct completely or partially to the air-conditioning system, which can solve the problem of the flexible control of the air flow direction in the circulation air duct.

[0036] In combination with the first aspect, in certain implementations of the first aspect, the controller is configured to: in the heating mode, close the connection between the heat dissipation air duct and the outside of the air-conditioning system, and open the connection between the heat dissipation air duct and the main air duct.

[0037] In the embodiments of the present application, since the air conditioner has a cooling mode and a heating mode, it is further necessary to solve the problem of the control of the heat dissipation air duct in the heating mode. Since in the heating mode, the blower still generates heat, and this part of the heat is used for the heating of the air-conditioning system, the heating efficiency of the air-conditioning system can be improved. Based on this, in the heating mode, it is controlled that the heat dissipation air duct is only connected to the main air duct, and the heat generated by the heat dissipation of the blower inside the heat dissipation air duct will enter the air outlet unit of the air-conditioning system. This can provide a heat source for the air-conditioning system in the heating mode and reduce the heating power consumption.

[0038] In a second aspect, the present application provides an air-conditioning control method, and this air-conditioning control method includes the following steps:

[0039] In the cooling mode, start the intake of the air-conditioning system to make the air conditioner work in the cooling mode;

[0040] Detect the temperature at the position of the blower in the air-conditioning system;

[0041] When the temperature of the blower rises and reaches a preset condition, control the heat dissipation air duct to be connected to the outside of the air-conditioning system.

[0042] In combination with the second aspect, in certain implementations of the second aspect, the air-conditioning control method further includes: when the air conditioner is turned on and the cooling mode is started, control to open the internal circulation air duct and close the external circulation air duct.

[0043] In combination with the second aspect, in certain implementations of the second aspect, the air-conditioning control method further includes: when the air-conditioning system is working in the cooling mode and the temperature of the blower rises and reaches a preset condition, control the heat dissipation air duct to be connected to the outside of the air-conditioning system and control to increase the air intake volume of the external circulation air duct.

[0044] In combination with the second aspect, in some implementation manners of the second aspect, the air conditioner control method further includes: when the air conditioner system is operating in the cooling mode and the temperature of the blower increases and reaches a preset condition, controlling the heat dissipation air duct to communicate with the outside of the air conditioner system, controlling an increase in the air intake volume of the external circulation air duct, and controlling the increased air intake volume through the external circulation air duct to be equal to the air volume discharged to the outside of the air conditioner system through the heat dissipation air duct.

[0045] In combination with the second aspect, in some implementation manners of the second aspect, the air conditioner control method further includes: detecting the temperature outside the air conditioner system, detecting the temperature of the blower of the air conditioner system, calculating the difference between the temperature of the blower of the air conditioner system and the temperature outside the air conditioner system, and if the temperature of the blower of the air conditioner system is greater than the temperature outside the air conditioner system and the difference between the two reaches a set threshold, controlling the heat dissipation air duct to communicate with the outside of the air conditioner system.

[0046] In combination with the second aspect, in some implementation manners of the second aspect, the air conditioner control method further includes: in the heating mode, closing the communication between the heat dissipation air duct and the outside of the air conditioner system and opening the communication between the heat dissipation air duct and the main air duct.

[0047] In a third aspect, the present application provides a vehicle, and the vehicle includes the air conditioner system provided in the first aspect.

[0048] In a fourth aspect, the present application provides a computer-readable medium, and the computer-readable medium stores program codes, and the program codes are executed by one or more processors. When the program codes are running on the processors, an apparatus including the one or more processors is caused to execute the air conditioner control method in the second aspect described above.

[0049] In a fifth aspect, a computer program product is provided, and the computer program product includes: computer program codes. When the computer program codes are running on a computer, the computer is caused to execute the air conditioner control method in the second aspect described above.

[0050] In a sixth aspect, an embodiment of the present application provides a chip system, and the chip system includes a processor for calling a computer program or computer instruction stored in a memory so that the processor executes the air conditioner control method in the second aspect described above.

[0051] The beneficial effects brought by the technical solutions provided in the embodiments of the present application at least include:

[0052] Provided are an air conditioning system, a control method for the air conditioning system, and a vehicle. The present application improves the structure of the air conditioning system. By adding the design of a heat dissipation air duct and combining with the blower temperature detection strategy, the problem of heat dissipation of the blower of the air conditioning system is solved in the cooling mode, and the heat of the blower is effectively utilized in the heating mode. When the air conditioning system operates in the cooling or heating mode, both the air conditioning system and its control method have the effects of improving the working efficiency of the air conditioning system and reducing the energy consumption of the air conditioning system.

[0053] The above description is only an overview of the technical solution of the present disclosure. In order to be able to understand the technical means of the present disclosure more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features, and advantages of the present disclosure more obvious and understandable, the specific embodiments of the present disclosure are specifically exemplified below. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 is a schematic diagram of the overall structure of the air conditioning system according to an embodiment of the present application;

[0055] Figure 2 is a schematic diagram of the starting state structure of the air conditioning system in the cooling mode according to an embodiment of the present application;

[0056] Figure 3 is a schematic diagram of the blower cooling state structure of the air conditioning system according to an embodiment of the present application;

[0057] Figure 4 is a schematic diagram of the working state structure of the air conditioning system in the heating mode according to an embodiment of the present application;

[0058] Figure 5 is a schematic diagram of the controller logic structure according to an embodiment of the present application;

[0059] Figure 6 is a schematic diagram of the controller control logic according to an embodiment of the present application;

[0060] Figure 7 is a flowchart of the air conditioning control method according to an embodiment of the present application;

[0061] In the above figures:

[0062] 1. Inlet air duct; 101. Inner circulation air duct; 102. Outer circulation air duct;

[0063] 2. Main air duct; 201. Main air duct branch;

[0064] 3. Blower air duct;

[0065] 4. Heat dissipation air duct; 401. Heat dissipation air duct branch;

[0066] 5. Air outlet unit;

[0067] 6. Warm air core

[0068] 7. Blower

[0069] 8. First temperature sensor

[0070] 9. Second temperature sensor

[0071] 10. Cooling air damper

[0072] 11. Recirculation air damper

[0073] 12. Evaporator

[0074] 1301. Face air duct; 1302. Defrost air duct; 1303. Foot air duct

[0075] 14. Controller, 1401. Acquisition module; 1402. Calculation module; 1403. Storage module

[0076] 15. Temperature damper Detailed implementation manners

[0077] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention

[0078] In the embodiments of the present application, prefix words such as "first" and "second" are only used to distinguish different described objects, and have no limiting effect on the position, order, priority, quantity or content of the described objects, etc. The use of ordinal numbers and other prefix words for distinguishing described objects in the embodiments of the present application does not constitute a limitation on the described objects. The description of the described objects refers to the description in the context of the claims or embodiments, and should not constitute an unnecessary limitation because of the use of such prefix words. In addition, in the description of this embodiment, unless otherwise specified, the meaning of "a plurality" is two or more

[0079] Next, the technical solutions in the embodiments of the present application will be described with reference to the accompanying drawings in the embodiments of the present application. Among them, in the description of the embodiments of the present application, unless otherwise specified, " / " means "or". For example, A / B can mean A or B; "and / or" herein is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. These three situations

[0080] In several embodiments provided in the embodiments of the present application, it should be understood that the disclosed systems and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection to each other can be through some interfaces. The indirect coupling or communication connection of the device or unit can be in electrical, mechanical or other forms.

[0081] Next, the present application will be specifically described through exemplary embodiments. However, it should be understood that, without further narration, the elements, structures, and features in one embodiment can also be beneficially combined into other embodiments.

[0082] The components of the air-conditioning system include: a refrigeration cycle system, an air circulation system, a control system, and auxiliary components. The blower is part of the air circulation system and is responsible for blowing the cooled or heated air into the vehicle or room. The blower includes parts such as a motor, fan blades, a housing, and a speed control device. The motor, as the power element of the blower, is a key component for the normal operation of the blower. After the blower motor is powered on, heat will be generated when the current passes through the coil. Under normal circumstances, the surface of the motor is slightly warm and will not affect the operation of the air conditioner; but after long-term operation, excessive heat of the motor will affect the refrigeration function of the air conditioner.

[0083] After the air conditioner is started and the blower is started, the motor will generate a small amount of heat due to power-on operation, and the housing may be slightly heated (usually not exceeding 10-20°C of the ambient temperature), which is a normal phenomenon. If the blower motor works for a long time or the load is too large, resulting in overheating, it will affect the operation of the air-conditioning system. If the blower overheats due to reasons such as motor failure, lack of oil in the bearing, or filter clogging, it may trigger the protection mechanism to stop, resulting in the air conditioner being unable to heat normally, and even damaging the motor.

[0084] In the prior art, the air-conditioning system does not have a blower heat dissipation air duct, and the high-temperature blower will reheat the passing air, resulting in an increase in the outlet air temperature. For example, if the air after being cooled by the evaporator is 10°C, but after mixing with the 60°C blower air flow, it may rise to more than 15°C, and the refrigeration effect will be significantly reduced.

[0085] Taking the summer refrigeration condition as an example, the heat generated by the air-conditioning blower is taken away by the cooling air and enters the air-conditioning box, which will cause the air temperature in the air-conditioning box to rise by about 2°C. In order to resist the influence brought by the blower heating, it is necessary to increase the refrigeration power of the air conditioner, and the compressor needs to provide more refrigeration capacity, which will increase the refrigeration burden of the passenger compartment.

[0086] In the known prior art, the cooling methods of air-conditioning blowers include the following. Centrifugal blowers (such as automotive air conditioners) can generate centrifugal force through the rotation of blades to assist in dissipating heat from the blower motor, but the heat dissipation effect is limited and it is not energy-efficient. It is also possible to monitor the temperature of the blower motor and reduce the blower speed when the temperature is too high to reduce the heat generation, but this will affect the normal operation of the air-conditioning system.

[0087] To solve the above problems, the present application provides an air-conditioning system.

[0088] Reference Figure 1 , is a structural diagram of an embodiment of the air-conditioning system of the present application. The air-conditioning system includes an air inlet duct 1, a main duct 2, a blower duct 3, a heat dissipation duct 4, an air outlet unit 5, and a controller.

[0089] The air inlet duct 1 is used for the air inlet of the air-conditioning system, that is, it includes guiding external or internal air into the air-conditioning system.

[0090] The main duct 2 is located at the rear end of the air inlet duct 1 along the air inlet direction, communicates with the air inlet duct 1, and communicates with the air outlet unit of the air-conditioning system. It should be understood that structures such as a heater core 6, a compressor, a condenser, an evaporator 12, etc. can be arranged in the main duct 2, and the cooled or heated air flows out through the air outlet unit to the user activity scene.

[0091] The blower duct 3 is located at the rear end of the main duct 2 along the air inlet direction, and a blower 7 is arranged inside it.

[0092] Exemplarily, as Figure 1 shown, at the rear end of the air inlet duct 1, the duct is divided into two paths. One path is the vertical main duct 2 shown in the figure, and the other path is the horizontal blower duct 3 shown in the figure. The air flow flowing in through the air inlet duct 1 flows backward through the main duct 2 and the blower duct 3 respectively. One end of the fan blade of the blower 7 faces the direction of the air inlet duct 1, and one end of the motor of the blower 7 faces the direction of the heat dissipation duct 4. Since the motor of the blower 7 is a heat-generating component, the heat generated by the motor operation will flow in the direction of the heat dissipation duct 4 along with the air flow.

[0093] The heat dissipation duct 4 is located at the rear end of the blower duct 3 along the air inlet direction and can be selectively connected to the main duct 2 or the outside of the air-conditioning system.

[0094] Exemplarily, the problem of the heat dissipation air duct 4 communicating with the outside of the air conditioning system can be solved by designing a heat dissipation air duct branch 401 for the heat dissipation air duct 4 or by designing a heat dissipation vent on the heat dissipation air duct 4. In this embodiment, at the end of the heat dissipation air duct 4, the air path is divided into two paths. One path is connected to the outside of the air conditioning system through the heat dissipation air duct branch 401, and the other path is connected to the main air duct through the main air duct branch 201. The design of this air path structure is not a limitation to the present invention. In other embodiments, the air path connection structure between the heat dissipation air duct 4 and the main air duct 2 can be designed in combination with the position, direction, and structural characteristics of the main air duct 2.

[0095] The controller 14 is configured to control the heat dissipation air duct 4 to communicate with the outside of the air conditioning system when the air conditioning system is operating in the cooling mode and when the temperature of the blower 7 rises and reaches a preset condition.

[0096] It should be understood that since heat is required in the air conditioning system under heating conditions, the system structure involved in the present invention and the heat dissipation control of the blower 7 are mainly applied when the air conditioning system is operating in the cooling mode. The preset condition can be set in combination with factors such as the working environment of the air conditioning system, the characteristics of the air conditioner, and the user's working requirements. The preset condition can be set when the air conditioning system leaves the factory, or during use, the user can set the preset condition through the controller. The preset condition can directly set the temperature of the blower 7, or can be set in combination with the temperature of the blower 7 and the reference index temperature. For example, in some embodiments, it can be set that when the temperature of the blower 7 reaches 30 °C, the heat dissipation of the blower 7 is started; in some embodiments, it can also be set that when the temperature of the blower 7 is 10 °C higher than the temperature outside the air conditioning system, the heat dissipation of the blower 7 is started.

[0097] In the embodiment of the present application, the air path structure of the traditional air conditioning system is improved, and a heat dissipation air duct 4 is additionally designed on the air conditioning system. The heat dissipation air duct 4 is located at the rear end of the blower 7. The heat generated when the blower 7 operates will enter the heat dissipation air duct 4 along with the air flow. When the temperature of the blower 7 rises to a certain extent, it is determined that the heat generated by the motor of the blower 7 will have a substantial impact on the operation of the air conditioning system, or there is a safety hazard in the blower 7. At this time, the heat dissipation of the blower 7 needs to be started. When the heat dissipation air duct 4 of the blower 7 is opened, after the air flowing into the air conditioner passes through the blower 7, it passes through the heat dissipation air duct 4, and finally flows out to the outside of the air conditioning system through the heat dissipation air duct branch 401, discharging the heat generated by the operation of the blower 7 motor to the outside of the air conditioning system, and being able to produce a heat dissipation effect on the blower 7. The air conditioning system provided by the embodiment of the present application can solve the problem of heat dissipation of the air conditioning blower, especially the problem of the influence of the heat of the blower on the refrigeration efficiency under the refrigeration condition. The refrigeration efficiency of the air conditioning system is improved, and the refrigeration energy consumption of the air conditioning system is reduced.

[0098] In a specific embodiment, the air intake duct 1 includes an internal circulation duct 101 and an external circulation duct 102 that can be selectively opened; the controller is configured to, when the air conditioner system operates in the cooling mode and the temperature of the blower 7 rises and reaches a preset condition, control the heat dissipation duct 4 to communicate with the outside of the air conditioner system and control the increase of the air intake volume of the external circulation duct 102.

[0099] According to different air sources, the air intake duct of the air conditioner system can be divided into an internal circulation duct 101 and an external circulation duct 102. The air source of the internal circulation duct 101 is the internal environment of the space where the air conditioner system acts, such as inside the vehicle / room. The air circulated is the internal air of the environment, which can quickly adjust the temperature and block external pollutants; the air source of the external circulation duct 102 is the external environment of the air conditioner system, such as outside the vehicle / room. Compared with the internal circulation mode, this mode can introduce fresh air, balance the internal and external air pressures, and discharge odors or moisture. However, more external air needs to be processed for cooling / heating, and the energy consumption is slightly higher.

[0100] In the known prior art, due to different application fields of the air conditioner system, the structure will be different. For example, some household air conditioners only have the internal circulation mode, some high-end household air conditioners have the internal circulation and external circulation modes, and vehicle-mounted air conditioners have the internal circulation and external circulation modes. For an air conditioner system with an external circulation duct, the present application embodiment proposes a cooling structure and a cooling strategy for the blower. This cooling strategy has various combined implementation forms.

[0101] Exemplarily, when the temperature of the blower 7 rises to a certain extent, as in the foregoing embodiment, only the connection between the heat dissipation duct 4 of the blower 7 and the outside of the air conditioner system is opened, the external circulation duct 102 is kept closed, and the internal circulation duct 101 is opened. The blower 7 is cooled. At this time, the blower 7 is cooled by the internal circulation air, and the cooling effect is limited.

[0102] Exemplarily, if the external circulation duct 102 is initially in the closed state, when the temperature of the blower 7 rises to a certain extent, it is also possible to select to open the external circulation duct 102 while opening the connection between the heat dissipation duct 4 and the outside of the air conditioner system. The external circulation air is introduced into the air intake system. Since the external circulation air will increase the air fluidity, it can increase the flow rate of the internal air flow in the heat dissipation duct 4 to the outside of the air conditioner system. And the temperature relative to the position of the blower is low, which can also produce a cooling effect on the air conditioner blower. At the same time, the heat dissipation duct 4 and the external circulation duct 102 are opened, which will quickly cool the air conditioner blower.

[0103] Exemplarily, if the external circulation duct 102 is initially in the open state, when the temperature of the blower 7 rises to a certain extent, it is also possible to select to increase the opening amplitude of the external circulation duct 102 while opening the connection between the heat dissipation duct 4 and the outside of the air conditioner system, and increase the air volume introduced by the air intake system through the external circulation, which will quickly cool the air conditioner blower 7.

[0104] In a specific embodiment, the controller is configured to: when the temperature of the blower 7 rises and reaches a preset condition, control the heat dissipation air duct 4 to communicate with the outside of the air conditioning system, control the opening of the external circulation air duct 102, and control the increased air intake through the external circulation air duct 102 to be equal to the air volume discharged to the outside of the air conditioning system through the heat dissipation air duct 4.

[0105] It should be understood that since part of the air volume of the air conditioning system is discharged to the outside of the air conditioning system, the internal air flow rate of the air conditioning system will be reduced, and the way of introducing external circulation air can increase the fluidity of the gas and cool the air conditioning blower faster. In the cooling mode, since the temperature outside the air conditioning system is relatively lower than the temperature at the position of the air conditioning blower 7, the way of introducing external circulation air can cool the air conditioning blower faster. However, if the air volume flowing out through the heat dissipation air duct 4 is not equal to the air volume introduced through the external circulation air duct, it will cause a change in the air volume at the air outlet unit position of the subsequent air conditioning system, affecting the comfort of the user. For example, taking the function mode of the on-vehicle air conditioning blowing air to the face as an example, in the first state, the flow rate of the blowing air to the face is constant and the human body comfort is always the same. When the external circulation air duct 102 is opened or the opening amplitude of the external circulation air duct 102 is increased, the air volume introduced through the external circulation increases, and the air volume of the blowing air to the face felt by the human body increases, resulting in a decrease in comfort.

[0106] Based on this, control the increased air intake through the external circulation air duct to be equal to the air volume discharged to the outside of the air conditioning system through the heat dissipation air duct. At this time, the air volume flowing through the air outlet unit of the air conditioning system can remain unchanged, ensuring the comfort of the user.

[0107] Exemplarily, an air outlet flow meter can be set at the position inside the heat dissipation air duct 4 or at the air outlet position of the heat dissipation air duct 4, that is, at the position of the heat dissipation air duct branch 401, and an air intake flow meter can be set at the inlet position or inside the external circulation air duct 102. The controller calculates the gas volume flowing into the external circulation air duct 102 and the gas volume flowing out through the heat dissipation air duct 4 according to the flow data acquisition values of the two flow meters, so as to achieve precise control of the air intake flow and the air outlet flow.

[0108] In the above embodiments, the initial states of the internal circulation air duct 101 and the external circulation air duct 102 are not limited. That is, in some embodiments, in the starting state of the cooling mode, the internal circulation air duct 101 can be opened and the external circulation air duct 102 can be closed; in other embodiments, in the starting state of the cooling mode, the internal circulation air duct 101 can be partially opened and the external circulation air duct 102 can be partially opened; in other embodiments, in the starting state of the cooling mode, the internal circulation air duct 101 can also be closed and the external circulation air duct 102 can be opened.

[0109] In a specific embodiment, for an air conditioner structure having an internal circulation air duct 101 and an external circulation air duct 102, the following blower 1 cooling method is also provided. As a preferred embodiment, the controller is configured to: in the refrigeration mode (usually when the refrigeration mode is started), control to open the internal circulation air duct 101 and close the external circulation air duct 102; when the temperature of the blower 7 rises and reaches a preset condition, control the heat dissipation air duct 4 to communicate with the outside of the air conditioning system; control to open the external circulation air duct 102.

[0110] In the embodiment of the present application, considering that in the prior art, for an air conditioning system having an internal circulation air duct 101 and an external circulation air duct 102, in the refrigeration mode, the common working mode is to only open the internal circulation air duct 101 at the beginning of the refrigeration mode startup. In the internal circulation mode, the air conditioner only circulates the air inside the vehicle or the room, avoiding the entry of external hot air, so the temperature inside the vehicle can be reduced faster. To solve the problem of the heat dissipation of the blower 7 in this common mode, at the startup of the refrigeration mode, control to open the internal circulation air duct 101 and close the external circulation air duct 102. When the temperature of the blower 7 is too high, then open the external circulation air duct 102. At this time, the air intake flow through the external circulation air duct 102 increases, and the heat of the blower 7 is taken away by the air flow and circulated through the heat dissipation air duct 4 to the outside of the air conditioning system, which can meet the control requirements of the common air conditioning working mode.

[0111] In a specific embodiment, since it is determined whether the air conditioner blower 7 needs to dissipate heat according to its temperature, in order to conveniently obtain the temperature of the blower 7, the air conditioning system further includes a first temperature sensor 8 and a second temperature sensor 9.

[0112] The first temperature sensor 8 is arranged outside the air conditioning system and is used to detect the temperature outside the air conditioning system. It should be understood that after the air conditioning system is started, the first temperature sensor 8 starts to work immediately. Therefore, the first temperature sensor 8 can collect the temperature outside the air conditioning system in real time. For a vehicle-mounted air conditioner, the vehicle system has the function of collecting the external temperature, and the existing structure of the vehicle system can be used.

[0113] The second temperature sensor 9 can be selectively arranged in the heat dissipation air duct 4 or the blower air duct 3. Since the heating component is the motor, in order to be able to more accurately measure the temperature of the motor of the blower 7, the second temperature sensor 9 is located at the rear end of the motor of the blower 7 along the air inlet direction; it should be understood that setting the second temperature sensor 9 at a position closer to the motor of the blower 7 can collect the temperature of the motor of the blower 7 more accurately.

[0114] The controller is connected to the first temperature sensor 8 and the second temperature sensor 9 to obtain the temperature detection values of the two temperature sensors;

[0115] The preset condition is that the detection value of the first temperature sensor 8 is less than the temperature detection value of the second temperature sensor 9.

[0116] In the embodiments of the present application, since it is necessary to start the blower cooling according to the temperature of the blower 7, in order to be able to detect the temperature of the blower 7 and set preset conditions, two temperature sensors are respectively set to detect the temperature outside the air-conditioning system and the position where the blower 7 is located. Among them, the second temperature sensor 9 for detecting the temperature of the blower 7 has multiple selectable installation positions. The blower air duct 3 is closest to the blower 7 and can reflect the temperature change of the blower 7; while the heat dissipation air duct 4 is located at the rear end of the blower 7, and the air flowing through the blower 7 will inevitably flow through the heat dissipation air duct 4, so the air flowing through the inside of the heat dissipation air duct 4 can reflect the heat of the blower 4 to a certain extent. Therefore, it is also possible to select to set the second temperature sensor 9 inside the heat dissipation air duct 4. It should be understood that in order to measure the temperature of the blower 7 more accurately, even if the second temperature sensor 9 is set in the heat dissipation air duct 4, the position closest to the motor of the blower 7 should be selected.

[0117] Exemplarily, the preset condition may be: the detected value of the first temperature sensor 8 is less than the temperature detected value of the second temperature sensor 9. At this time, it indicates that the temperature of the blower 7 has risen to a certain extent and cooling can be carried out.

[0118] In a specific embodiment, if the cooling of the blower is started when the detected value of the first temperature sensor 8 is less than the temperature detected value of the second temperature sensor 9, it may cause overcooling of the blower 7 and affect the normal operation of the air-conditioning system. For example, when the air conditioner is operating in the cooling mode and the outside ambient temperature is relatively high, introducing outside air through the external circulation excessively can drive the air flow and dissipate heat from the blower 7, but it will also affect the air-conditioning cooling efficiency.

[0119] Based on this, to solve this problem, the air-conditioning system is further configured that the preset condition in it is: the detected value of the first temperature sensor 8 is less than the temperature detected value of the second temperature sensor 9, and the temperature difference reaches a first threshold.

[0120] Exemplarily, the first threshold can be set in advance by the controller, and the size of the first threshold can be selected in combination with comprehensive factors such as the performance of the air-conditioning system, the working scenario of the air conditioner, and the performance of the blower. For example, it can be 20°C, 25°C, etc. By further setting the first threshold, the cooling of the blower 7 is started after the temperature difference between the blower 7 and the outside of the air-conditioning system reaches a certain extent, so as to avoid the influence on the operation of the air-conditioning system caused by the frequent switching of the air duct during the cooling process of the blower 7.

[0121] Exemplarily, for example, when the blower 7 starts, the motor generates a small amount of heat due to energized operation, and the blower housing may get slightly hot. Turn on the air conditioner and set it to medium-high air volume, and run it for 10 - 15 minutes to make the blower reach a relatively stable operating temperature. Assume that at this time, the temperature of the blower is 50°C, and the second temperature sensor 9 detects this temperature and feeds it back to the control system. After the air conditioner starts, the first temperature sensor 8 continuously collects the external temperature of the air conditioning system. Assume that at this time, the external temperature of the air conditioning system is 25°C. If the set threshold is 25°C, then at this time, the connection between the heat dissipation air duct 4 and the outside of the air conditioning system can be opened, and the blower 7 can be started for heat dissipation.

[0122] In a specific embodiment, a heat dissipation air door 10 is provided in the heat dissipation air duct 4. The heat dissipation air door 10 can adopt a rotary air door. The controller is connected to the heat dissipation air door 10 to control the opening degree of the heat dissipation air door 10, so as to control the air volume flowing from the heat dissipation air duct 4 to the main air duct 2 and the outside of the air conditioning system.

[0123] Combined with reference Figures 1 to 4 , the opening degree of the heat dissipation air door 10 can be controlled. By adjusting the opening degree of the heat dissipation air door 10, the flow rate of the air flow through the heat dissipation air duct 4 to the heat dissipation air duct branch 401 and the main air duct branch 201 can be controlled. For example, in the state shown in Figure 1 , the heat dissipation air door 10 is in an intermediate state. At this time, part of the air flow in the heat dissipation air duct 4 flows to the heat dissipation air duct branch 401, and part flows to the main air duct branch 201. In the state shown in Figure 2 , the heat dissipation air door 10 is in a closed state towards the main air duct branch 201. At this time, all the air flow in the heat dissipation air duct 4 flows out through the heat dissipation air duct branch 401 to the outside of the air conditioning system. In the states shown in Figure 3 and Figure 4 , the heat dissipation air door 10 is in a closed state towards the heat dissipation air duct branch 401. At this time, all the air flow in the heat dissipation air duct 4 flows through the main air duct 3 to the air outlet unit of the air conditioning system. Among them, Figure 3 shows the heat dissipation state of the blower when the air conditioner is working in the cooling mode, Figure 4 shows the state when the air conditioner is working in the heating mode.

[0124] It should be understood that the heat dissipation air door 10 is controlled by the controller and can select to completely or partially connect the heat dissipation air duct 4 to the main air duct 2, or completely or partially connect it to the outside of the air conditioning system, which can solve the problem of flexible control of the air flow direction in the heat dissipation air duct 4. During the process of controlling the heat dissipation of the blower in this application, by controlling the rotation angle of the heat dissipation air door 10, the heat dissipation air duct 4 can be partially or fully connected to the outside of the air conditioning system. The opening degree of the heat dissipation air door 10 can also be adjusted in real time in combination with the temperature acquisition values of the first temperature sensor 8 and the second temperature sensor 9.

[0125] Exemplarily, in some embodiments, other forms of components such as butterfly valves, flap valves, and pneumatic control valves can also be used as the control components for opening and closing the heat dissipation air duct 4, and all can solve the problem of controlling the air flow direction.

[0126] In addition to controlling the air flow in the heat dissipation air duct 4, it is also necessary to solve the problem of controlling the air flow in the intake air duct 1. In order to solve the problem of controlling the internal circulation and external circulation in the circulation air duct, in a specific embodiment, a circulation air damper 11 is provided in the intake air duct 1, and the controller is connected to the circulation air damper 11 to control the opening degree of the circulation air damper 11 so as to control the air volume flowing into the main air duct 2 through the external circulation air duct 102.

[0127] It should be understood that the circulation air damper 11 is controlled by the controller, and a rotary air damper can be selected, which can selectively connect the intake air duct 1 completely or partially to the air conditioning system, and can solve the problem of flexible control of the air flow direction in the circulation air duct.

[0128] Exemplarily, in some embodiments, other forms of components such as butterfly valves, flap valves, and pneumatic control valves can also be used as the control components for opening and closing the intake air duct 1, and all can solve the problem of controlling the air flow direction.

[0129] It should be understood that independent air flow control components can be provided in the internal circulation air duct 101 and the external circulation air duct 102, or a single air flow control component can be provided to achieve the alternate control of the two circulation air ducts. For example, in the embodiments of the present application, a rotary air damper is provided in each of the internal circulation air duct 101 and the external circulation air duct 102, and the controller can independently control the two rotary air dampers to control the air intake volume through the internal circulation air duct 101 and the external circulation air duct 102.

[0130] Since the air conditioner has a cooling mode and a heating mode, the present application improves the air path structure of the air conditioning system, and it is necessary to solve the problem of the function of the heat dissipation air duct 4 in the heating mode. In a specific embodiment, the controller is configured to: in the heating mode, close the connection between the heat dissipation air duct 4 and the outside of the air conditioning system, and open the connection between the heat dissipation air duct 4 and the main air duct 3.

[0131] It should be understood that in the heating mode, the blower 4 still generates heat, and this part of the heat is used for heating the air conditioning system, which can improve the heating efficiency of the air conditioning system. Based on this, in the heating mode, it is controlled that the heat dissipation air duct 4 is only connected to the main air duct 3, and the heat generated by the blower motor enters the air outlet unit of the air conditioning system through the heat dissipation air duct 4. This can provide a heat source for the air conditioning system in the heating mode and reduce the heating power consumption.

[0132] Exemplarily, an evaporator 12 and a heater core 6 are further disposed in the main air duct 2. A temperature air door 15 is disposed at the position of the heater core 6. When the air conditioner operates in the cooling mode, the temperature air door 15 is closed, the air flow does not flow through the heater core 6, and the heater core 6 does not work. When the air conditioner operates in the heating mode, the temperature air door 15 is opened, the air flow flows through the heater core 6, and the heater core 6 works to heat the air flowing through. The temperature air door 15 is controlled by a controller and can adopt a rotary air door.

[0133] The logical structure of the controller 14 refers to Figure 5 . It should be understood that in order to implement the control function of the air conditioning system structure of the present application, the controller 14 further includes an acquisition module 1401, a calculation module 1402, and a storage module 1403.

[0134] Among them, the storage module 1403 is used to store the thresholds set by the preset conditions. The acquisition module 1401 is connected to the first temperature sensor 8 and the second temperature sensor 9, and is used to acquire the external temperature of the air conditioning system and the temperature of the motor of the blower 7. In some embodiments, if the heat dissipation air door 10, the circulation air door 11, and the temperature air door 15 adopt rotary air doors, the acquisition module 1401 can also be connected to the heat dissipation air door 10, the circulation air door 11, and the temperature air door 15 to acquire the opening degrees of the respective air doors, and store the opening degrees at the first moment in the storage module 1401. The calculation module 1402 is used to adjust the states of the respective air doors according to the acquisition values of the first temperature sensor 8 and the second temperature sensor 9, the thresholds set by the preset conditions stored in the storage module 1403, and the opening degrees of the respective air doors, in combination with the cooling or heating working mode of the air conditioner, so as to realize the adjustment of the air flow passing path.

[0135] It should be understood that the controller 14 has a communication interface for realizing the communication between the modules, devices, units, and / or equipment in the embodiments of the present application.

[0136] The embodiment of the present application further provides an air conditioning control method. Refer to Figure 7 , which is the flowchart of the air conditioning control method provided by the present invention. The air conditioning control method includes the following steps.

[0137] S1: Start the air intake of the air conditioning system to make the air conditioner operate in the cooling mode.

[0138] It should be understood that an air conditioning start instruction can be issued through the air conditioning controller to start the air conditioner and open the air intake opening. For an air conditioner applied to a vehicle, after starting the vehicle, the air conditioner is started through the central control panel or physical buttons to turn on the power of the air conditioning system. For a household air conditioner or an industrial air conditioner, the power of the air conditioning system can be turned on through a remote control.

[0139] S2: Detect the temperature at the position of the blower in the air conditioning system.

[0140] After the air conditioner is started and the blower is started, as the running time increases, the heat generated by the motor increases. Turn on the air conditioner and adjust it to medium or high air volume, and run for 10 - 15 minutes until the blower reaches a stable operating temperature. In some cases, for example, due to blower aging, foreign object blockage, lack of lubricating oil in the bearing, etc., the temperature of the blower will rise abnormally.

[0141] The position of the in-vehicle air conditioner blower is usually under the instrument panel, behind the glove box, or near the air conditioner filter element. The blower can be seen by removing the front panel of the indoor unit of a household air conditioner. After locating the position of the blower, there are various ways to measure the temperature of the blower. For example, the temperature of the blower can be quickly detected by an infrared thermometer gun or a thermal imager, and a comprehensive judgment can be made by combining the sense of touch and abnormal noise.

[0142] Some vehicles support viewing the blower temperature parameter by reading the data stream of the air conditioning system.

[0143] S3: When the temperature of the blower rises and reaches the preset condition, control the heat dissipation air duct to communicate with the outside of the air conditioning system.

[0144] Opening the connection between the heat dissipation air duct and the outside of the air conditioning system will allow the heat generated by the blower to flow out of the air conditioning system with the air flow, thus solving the problem of blower heat dissipation.

[0145] In a specific embodiment, step S1 includes the following steps.

[0146] When the air conditioner is turned on and in the cooling mode, control the opening of the internal circulation air duct and the closing of the external circulation air duct.

[0147] In a specific embodiment, step S2 includes the following steps.

[0148] Use the second temperature sensor 9 to detect the temperature at the position of the blower of the air conditioning system.

[0149] In a specific embodiment, step S3 includes the following steps.

[0150] The inlet air duct 1 includes an internal circulation air duct 101 and an external circulation air duct 102 that can be selectively opened; when the air conditioning system is operating in the cooling mode and the temperature of the blower 7 rises and reaches the preset condition, control the heat dissipation air duct 4 to communicate with the outside of the air conditioning system, and control the opening of the external circulation air duct to increase the air intake of the external circulation air duct 102.

[0151] In a specific embodiment, step S3 further includes: when the air conditioning system is operating in the cooling mode and the temperature of the blower 7 rises and reaches the preset condition, control the heat dissipation air duct 4 to communicate with the outside of the air conditioning system, control the increase of the air intake of the external circulation air duct 102, and control the increased air intake through the external circulation air duct to be equal to the air volume discharged to the outside of the air conditioning system through the heat dissipation air duct.

[0152] In a specific embodiment, step S3 further includes: The air conditioning control method further includes the following steps: In the heating mode, close the connection between the heat dissipation air duct and the outside of the air conditioning system, and open the connection between the heat dissipation air duct and the main air duct.

[0153] In a specific embodiment, step S3 further includes: Detect the temperature outside the air conditioning system, detect the temperature of the blower of the air conditioning system, calculate the difference between the temperature of the blower of the air conditioning system and the temperature outside the air conditioning system. If the temperature of the blower of the air conditioning system is greater than the temperature outside the air conditioning system and the difference between the two reaches a set threshold, control the heat dissipation air duct to communicate with the outside of the air conditioning system and start cooling the blower 7.

[0154] It should be understood that the temperature of the blower of the air conditioning system can be assisted in detection by detecting the temperature of the heat dissipation air duct 4 of the air conditioning system or the temperature of the blower air duct 3.

[0155] In a specific embodiment, step S3 further includes:

[0156] In a third aspect, the present application provides a vehicle, and the vehicle includes the air conditioning system provided in the first aspect.

[0157] Generally speaking, the vehicle air conditioning system is composed of a compressor, a condenser, an evaporator, an expansion valve, a blower 7, a heater core 6, air ducts and air valves, a control system, a refrigerant, sensors, etc., and together they realize the functions of refrigeration, heating and ventilation to ensure a comfortable interior environment. The vehicle air conditioning system has internal circulation and external circulation operation modes, that is, the air intake duct 1 includes an internal circulation air duct 101 and an external circulation air duct 102.

[0158] For the vehicle, the first temperature sensor 8 is arranged outside the vehicle body and is used to detect the temperature outside the vehicle body. For the vehicle system, the temperature sensor outside the vehicle body is an important component on the vehicle, mainly used to measure the outside ambient temperature and provide data to the vehicle system (such as air conditioning, instrument panel, etc.). It can usually be selected to be installed at the front of the vehicle head, such as near the front bumper and grille. The first temperature sensor 8 detects the outside temperature in real time and transmits the data to the vehicle machine system, helping the automatic air conditioning system to adjust the interior temperature according to the outside temperature, and can also display the outside temperature on the instrument panel or the central control screen for the driver's reference.

[0159] It should be understood that the vehicle air conditioning system has modes such as face blowing, foot blowing, defrosting, etc. By controlling the air valves and air ducts, the air flow direction is adjusted to meet different comfort and safety requirements. Independent air valves are arranged at the air outlet positions corresponding to each mode, and the controller is connected to the air valves to independently control the opening degrees of the air valves and adjust the air volume at the air outlets in each mode.

[0160] Reference Figures 1 to 4, the air outlet system of the air conditioner includes: a face blowing air duct 1301, a defrosting air duct 1302, and a foot blowing air duct 1303. Taking the face blowing mode as an example, the face blowing air duct 1301 is opened, and the defrosting air duct 1302 and the foot blowing air duct 1303 are closed.

[0161] It should be understood that the vehicle air conditioning system has a refrigeration mode and a heating mode. When the air conditioner works in the refrigeration mode, in the initial state, the external circulation air duct 1202 is closed, and the internal circulation air duct 1201 is opened to intake air through the internal circulation air duct. The heat dissipation air door 10 is adjusted to a state where the connection port between the heat dissipation air duct 4 and the outside of the air conditioning system is closed. When the air flow reaches the intersection position of the main air duct 2 and the blower air duct 3, part of the air flows into the main air duct 2, and part of the air flows into the heat dissipation air duct 4. The air flowing into the main air duct 2 and the air flowing into the heat dissipation air duct 4 are aggregated, cooled by the refrigeration components in the main air duct 2, and then flow out through the air outlet of the face blowing air duct 1301.

[0162] As the working time of the blower 7 increases, the motor of the blower 7 generates heat, and the heat of the air flowing through the heat dissipation air duct 4 gradually increases. The first temperature sensor 8 detects the temperature outside the air conditioning system and the temperature value of the blower 7 detected by the second temperature sensor 9 increases. After the controller 14 detects the temperature signal, it judges whether the preset condition is reached. When the preset condition is reached, the controller 14 controls the heat dissipation air door 10 to be adjusted to partially open the connection with the outside of the air conditioning system, or directly adjusted to close the connection with the main air duct 2, fully open the connection between the heat dissipation air duct 4 and the outside of the air conditioning system, and open the external circulation air duct 1202. The air flow entering through the external circulation air duct 1202 can accelerate the air flow rate of the blower 7 into the heat dissipation air duct 4, and at the same time, with the help of the cooling air introduced by the external circulation air duct 1202, the cooling of the blower is accelerated.

[0163] At this time, since part of the air inside the air conditioning system flows out through the heat dissipation air duct 4 to the outside of the air conditioning system, it will disrupt the original stable air flow inside the air conditioning system, which may cause an increase or decrease in the air outlet at the outlet of the face blowing air duct 1301, affecting the use comfort. Based on this, the controller needs to adjust the control strategy, open the external circulation air duct 1202, introduce additional air flow through the external circulation air duct 1202, so that the air volume introduced through the external circulation air duct 1202 is equal to the air volume flowing out through the heat dissipation air duct 4 to the outside of the air conditioning system, and keep the air volume inside the air conditioning system in a relatively stable state to ensure the use comfort.

[0164] It should be understood that for the vehicle system, the "outside of the air conditioning system" described in the embodiments of the present application may be the outside of the vehicle body or the inside of the vehicle cabin. Figure 3Taking the refrigeration mode shown as an example, the air conditioning system operates in the internal circulation mode. As the operating time of the blower 7 increases, the motor of the blower 7 generates heat. The connection between the heat dissipation air duct 4 and the main air duct 2 is closed, and the connection between the heat dissipation air duct 4 and the outside of the air conditioning system is opened. At this time, the air flow carrying the heat of the blower 7 flows out through the heat dissipation air duct 4 into the passenger compartment, and the refrigeration air flow passes through the main air duct 2 and then is discharged through the air conditioning box. The discharge position can be determined by the positions of the face blowing air duct 1301, the defrosting air duct 1302, and the foot blowing air duct 1303. This operating mode forms a refrigeration small cycle. Since the air carrying the hot air flow of the blower 7 does not enter the air conditioning box, this operating mode can directly reduce the refrigeration load and the power consumption of the compressor. In practical applications, the air outlet of the heat dissipation air duct 4 in the passenger compartment can be set at a position close to the foot position of the co-pilot. On the one hand, the hot air flowing out through this position can reduce the refrigeration impact on the driver's position; on the other hand, since the air outlet position is close to the foot position, it can avoid the direct blowing of hot air on the face or body, ensuring the comfort of passengers. In some embodiments, the air outlet of the heat dissipation air duct 4 in the passenger compartment can also be selected to be set at positions such as the rear of the instrument panel and the rear side of the glove box of the co-pilot.

[0165] The flow control principle of the air conditioning in the foot blowing mode is the same as above and will not be elaborated. In addition, since users are less sensitive to the air volume in the foot blowing mode, it is also possible not to perform flow control in the foot blowing mode. It should be understood that in the defrosting mode, since users are less sensitive to the flow rate, it is also possible to consider not performing flow control.

[0166] The heat taken away from the motor of the blower 7 by the heat dissipation air flow does not enter the air conditioning box of the air conditioning outlet unit 5, but is directly discharged outside the vehicle, which can reduce the refrigeration load of the vehicle air conditioning system and achieve the purpose of reducing the power consumption of the compressor of the vehicle air conditioning system.

[0167] As the temperature of the blower 7 decreases, the temperature of the blower 7 is detected by the second temperature sensor 9 and transmitted to the controller 14 in real time. When the preset conditions are met, the control of the heat dissipation air damper 10 is adjusted to close the connection with the outside of the air conditioning system and open the connection with the main air duct 2. It should be understood that this adjustment process can also be carried out in stages. For example, the rotation angle of the heat dissipation air damper 10 can be gradually reduced in time periods. Correspondingly, because it is necessary to control the stability of the air flow inside the air conditioning system, while adjusting the angle of the heat dissipation air damper 10, the rotation angle of the circulation air damper 11 is adjusted to ensure the stability of the air flow.

[0168] Refer to Figure 4, when the air conditioner operates in the heating mode, taking the full-blow mode as an example, the position of the corresponding air damper is adjusted. The full-blow air duct 1303 is opened, and the defrosting air duct 1302 and the face-blow air duct 1301 are closed. At this time, the control of the heat dissipation air damper 10 is adjusted to close the connection with the outside of the air conditioning system and open the connection with the main air duct 2. This state is maintained throughout the heating process. The heat carried away by the heat dissipation air flow from the blower 7 motor enters the air conditioning box and becomes a supplementary heat source for heating the heater core 6, achieving the purpose of reducing the heating power.

[0169] It should be understood that when the air conditioning system of the present application is applied to a vehicle, the controller 14 can be integrated into the vehicle-mounted system. The vehicle-mounted system has an air conditioning control unit, and passengers can complete the control operation of the air conditioner through the human-machine control panel of the vehicle-mounted system. For example, the setting of the threshold value under preset conditions can be changed through the vehicle-mounted system, and the working mode of the air conditioner and the air intake mode of the intake air duct can be controlled through the vehicle-mounted system. The outside temperature value detected by the first temperature sensor 8 and the temperature value of the blower 7 detected by the second temperature sensor 9 will also be fed back to the vehicle-mounted system, and the vehicle-mounted system calculates the control instruction for the connection mode of the heat dissipation air duct 4 and the intake air duct 1 of the air conditioning system according to the preset conditions.

[0170] It should be understood that the communication methods between the first temperature sensor 8 and the second temperature sensor 9 and the controller of the vehicle-mounted system are mainly divided into two categories: wired communication and wireless communication. The actuator units of the circulation air damper 11 and the heat dissipation air damper 10 have signal receivers, and the control signals of the vehicle-mounted system of the vehicle can also be obtained by wired communication and wireless communication methods. For example: communication methods such as CAN bus, LIN bus, Bluetooth, V2X communication, and WIFI.

[0171] The embodiment of the present application also provides a computer program product, which includes: computer program code. When the computer program code runs on a computer, it enables the computer to execute the interaction method involved in the above embodiment. This computer program can be carried on a vehicle system, for example, the controller of the vehicle-mounted system of the vehicle, for controlling the air conditioner of the vehicle system.

[0172] The embodiment of the present application also provides a computer-readable storage medium. The computer-readable medium stores program code, and the program code is executed by one or more processors. When the program code runs on the processor, it enables a device including one or more processors to execute the interaction method involved in the above embodiment. The processor running this computer-readable medium can be carried on a vehicle system for controlling the air conditioner of the vehicle system.

[0173] It should be understood that when the modules or units described herein are implemented in software, they can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. The computer-readable storage medium can be any available medium that the computer can access, or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid state disk (SSD)), etc.

[0174] An embodiment of the present application provides a chip system. The chip system includes a processor, or the chip system includes a memory and a processor, and is configured to call a computer program or computer instructions stored in the memory, so that the processor executes the interaction method described in the above embodiments. The chip system can be a single chip or a chip module composed of multiple chips. The chip system can be mounted on a vehicle system for controlling the air conditioner of the vehicle system. Optionally, the storage module 1403 of the controller is a storage unit inside the chip, such as a register, a cache, etc. The storage unit can also be a storage unit outside the chip located in a wireless access device, such as a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM), etc.

[0175] Those of ordinary skill in the art can realize that the modules, units, and method steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or by a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0176] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. An air conditioning system, characterized in that: include: Air inlet duct: used for air intake of air conditioning system; Main air duct: located at the rear end of the air inlet duct along the air inlet direction, connected with the air inlet duct, and connected to the air outlet unit of the air conditioning system; Blower air duct: located at the rear end of the main air duct along the air inlet direction, and a blower is arranged inside the blower; Heat dissipation air duct: located at the rear end of the blower air duct along the air inlet direction, and can be selectively connected to the main air duct or the outside of the air conditioning system; Controller: configured to control the heat dissipation duct to be connected to the outside of the air conditioning system when the air conditioning system operates in the cooling mode and the blower temperature rises to reach a preset condition.

2. The air conditioning system according to claim 1, characterized in that: The air inlet duct includes an inner circulation duct and an outer circulation duct which can be selectively opened; The controller is configured to control the heat dissipation air duct to be connected to the outside of the air conditioning system and to increase the air intake volume of the external circulation air duct when the blower temperature rises and reaches a preset condition when the air conditioning system operates in a cooling mode.

3. The air conditioning system according to claim 2, characterized in that: The controller is further configured to: When the blower temperature rises and reaches a preset condition, the heat dissipation duct is controlled to be connected to the outside of the air conditioning system, and the increased air intake through the external circulation duct is controlled to be equal to the air volume discharged to the outside of the air conditioning system through the heat dissipation duct.

4. The vehicle air conditioning system according to claim 2, characterized in that: The air inlet duct includes an inner circulation duct and an outer circulation duct which can be selectively opened; The controller is configured to: in cooling mode, control the opening of the inner circulation air duct and the closing of the outer circulation air duct; When the temperature of the blower rises and reaches a preset condition, the heat dissipation air duct is controlled to be connected to the outside of the air-conditioning system; and the external circulation air duct is controlled to be opened.

5. The air conditioning system according to claim 1, 2, 3 or 4, characterized in that: The air conditioning system further comprises: The first temperature sensor is arranged outside the air conditioning system and is used to detect the external temperature of the air conditioning system; A second temperature sensor: arranged in the heat dissipation air duct or the blower air duct; The controller is connected to the first temperature sensor and the second temperature sensor to obtain temperature detection values ​​of the two temperature sensors; The preset condition is that the detection value of the first temperature sensor is smaller than the temperature detection value of the second temperature sensor, and the temperature difference reaches a first threshold.

6. The air conditioning system according to claim 1, 2, 3 or 4, characterized in that: A heat dissipation damper is arranged in the heat dissipation air duct, and the controller is connected to the heat dissipation damper to control the opening of the heat dissipation damper to control the air volume flowing through the heat dissipation air duct to the main air duct and the outside of the air conditioning system.

7. The air conditioning system according to claim 2, 3 or 4, characterized in that: A circulation damper is arranged in the air inlet duct, and the controller is connected to the circulation damper to control the opening of the circulation damper to control the air volume flowing into the main duct through the external circulation duct.

8. The vehicle air conditioning system according to claim 1, characterized in that: The controller is configured to: in a heating mode, close the connection between the heat dissipation air duct and the outside of the air conditioning system, and open the connection between the heat dissipation air duct and the main air duct.

9. An air conditioning control method, characterized in that: The air conditioning system according to any one of claims 1 to 8 comprises the following steps: In cooling mode, start the air conditioning system to intake air; Detect the temperature at the blower location in the air conditioning system; When the temperature of the blower rises and reaches a preset condition, the heat dissipation duct is controlled to be connected to the outside of the air conditioning system.

10. A vehicle, characterized in that: An air conditioning system comprising any one of claims 1 to 8.

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