Heat dissipation structure and air conditioner

Abstract

The utility model provides a heat dissipation structure and an air conditioner, the heat dissipation structure is used for the air conditioner, the air conditioner is provided with an indoor cavity and an outdoor cavity, the heat dissipation structure comprises an electric control box and a fan assembly, the electric control box is internally provided with a heat dissipation air duct and a fresh air duct, and the heat dissipation air duct and the fresh air duct communicate with the indoor cavity and the outdoor cavity correspondingly; the fan assembly comprises a first fan and a second fan, and the first fan is arranged in the indoor cavity and used for driving airflow in the indoor cavity to flow to the outdoor cavity from the heat dissipation air channel; the second fan is arranged in the outdoor cavity and used for driving airflow in the outdoor cavity to flow from the fresh air channel to the indoor cavity. The heat dissipation airflow can be mixed with the fresh air and enters the indoor cavity through the fresh air duct, so that part of the heat dissipation airflow flows back into the indoor cavity, the secondary utilization rate of waste cold of the heat dissipation airflow is increased, the energy consumption of the air conditioner is reduced, outdoor fresh air is introduced, the concentration of indoor carbon dioxide is reduced, and the heat dissipation efficiency of the air conditioner is improved. The indoor air quality is improved, and the user experience is improved.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning, and in particular to a heat dissipation structure and an air conditioner. Background Art

[0002] After the air conditioner is used for a long time, the heat in the electric control box continues to accumulate, causing the temperature inside the electric control box to continue to rise. Excessive temperature will damage the electronic components inside the electric control box, so the electric control box needs to be cooled.

[0003] In the related art, the heat of the electric control box is dissipated by air cooling, that is, the cold air on the indoor side is transported into the electric control box to dissipate the heat of the electric control box, and the airflow after the heat of the electric control box is usually directly discharged to the outdoor side. In this way, the utilization rate of the residual cold of the heat dissipation airflow is reduced, and the load-bearing capacity of the indoor heat exchanger is increased, which not only increases the energy consumption but also may affect the normal use of the air conditioner. Utility Model Content

[0004] The utility model provides a heat dissipation structure to solve the technical problem of low utilization rate of residual cooling of heat dissipation airflow for dissipating heat for an electric control box in the prior art.

[0005] To achieve the above-mentioned purpose, the heat dissipation structure proposed in the present application is used for an air conditioner, which has an indoor cavity and an outdoor cavity, and the heat dissipation structure includes an electrical control box and a fan assembly, and a heat dissipation duct and a fresh air duct are provided in the electrical control box, and the heat dissipation duct and the fresh air duct are connected to the indoor cavity and the outdoor cavity respectively; the fan assembly includes a first fan and a second fan, the first fan is arranged in the indoor cavity, and is used to drive the airflow in the indoor cavity to flow from the heat dissipation duct to the outdoor cavity; the second fan is arranged in the outdoor cavity, and is used to drive the airflow in the outdoor cavity to flow from the fresh air duct to the indoor cavity.

[0006] Optionally, in one embodiment, the electrical control box is provided with a first air inlet, a first air outlet, a second air inlet and a second air outlet, the first air inlet is connected to the heat dissipation duct and the indoor cavity, the first air outlet is connected to the heat dissipation duct and the outdoor cavity; the second air inlet is connected to the fresh air duct and the outdoor cavity, the second air outlet is connected to the fresh air duct and the indoor cavity; and / or the fresh air duct is connected to the heat dissipation duct.

[0007] Optionally, in one embodiment, the electric control box is provided with a first valve and / or a second valve, the first valve is used to adjust the opening of the first air outlet, and the second valve is used to adjust the opening of the second air inlet.

[0008] Optionally, in one embodiment, when the first valve is provided on the electric control box, a first spring is provided at the first air outlet, the first valve is connected to the first spring, and the first spring is located on a side of the first valve facing away from the second fan.

[0009] Optionally, in one embodiment, when the second valve is provided on the electric control box, a second spring is provided at the second air inlet, the second valve is connected to the second spring, and the second spring is located on the side of the second valve facing away from the second fan.

[0010] Optionally, in one embodiment, the heat dissipation structure further includes a temperature sensing element, which is connected to the electrical control box and is used to detect the temperature of the airflow in the outdoor cavity. The electrical control box is configured to adjust the rotation speed of the second fan according to the detection result of the temperature sensing element.

[0011] Optionally, in one embodiment, the air conditioner includes an evaporator, and the evaporator is disposed in the indoor cavity. The first fan is used to drive the air flow in the indoor cavity to pass through the evaporator and then flow into the heat dissipation duct.

[0012] Optionally, in one embodiment, the air conditioner includes a condenser, which is disposed in the outdoor cavity, and the first fan is used to drive the air flow in the indoor cavity to blow from the heat dissipation duct toward the condenser.

[0013] Optionally, in one embodiment, the fresh air duct and the heat dissipation duct are connected via a connecting port, a third valve is provided at the connecting port, and the third valve is used to connect or isolate the fresh air duct and the heat dissipation duct.

[0014] The present application also proposes an air conditioner, which includes the heat dissipation structure described above.

[0015] The heat dissipation structure provided by the present application is achieved by arranging fresh air duct and heat dissipation duct in the electric control box. The fresh air duct and the heat dissipation duct can be connected to the indoor cavity and the outdoor cavity respectively. Under the action of the first fan, part of the airflow in the indoor cavity can enter the heat dissipation duct, so that the airflow in the indoor cavity is used to dissipate the heat of the electric control box, thereby ensuring the reliability of the electric control box, and the heat dissipation airflow is discharged into the outdoor cavity. Part of the heat dissipation airflow can further cool the heating components in the outdoor cavity, and the remaining heat dissipation airflow can be mixed with the fresh air in the outdoor cavity; under the action of the second fan, the heat dissipation airflow and fresh air enter the indoor cavity through the fresh air duct, so that part of the heat dissipation airflow is returned to the indoor cavity, which not only improves the secondary utilization rate of the residual cold of the heat dissipation airflow and reduces the energy consumption of the air conditioner, but also introduces outdoor fresh air, reduces the concentration of indoor carbon dioxide, improves the indoor air quality, and improves user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0017] Figure 1 A schematic diagram of the heat dissipation structure provided in this application;

[0018] Figure 2 This is a schematic diagram of the structure of the electric control box provided in this application.

[0019] Description of Figure Numbers:

[0020] Label name Label name Label name 1 Air Conditioner 10 Electric control box 15 Second air inlet 2 Interior cavity 11 Cooling duct 151 Second valve 3 Outdoor cavity 12 Fresh air duct 152 Second spring 4 case 13 First air inlet 16 Second air outlet 5 Partition 14 First air outlet 17 Connecting port 6 Evaporator 141 First Valve 20 First fan 7 Condenser 142 First Spring 30 Second fan

[0021] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0023] The embodiment of the present application provides a heat dissipation structure to solve the technical problem of low utilization rate of residual cooling of heat dissipation airflow for heat dissipation of an electric control box in the prior art.

[0024] In the embodiments of the present application, Figure 1 and Figure 2 As shown, the heat dissipation structure is used for an air conditioner 1, which has an indoor cavity 2 and an outdoor cavity 3. The heat dissipation structure includes an electric control box 10 and a fan assembly. A heat dissipation duct 11 and a fresh air duct 12 are provided in the electric control box 10. The heat dissipation duct 11 and the fresh air duct 12 are connected to the indoor cavity 2 and the outdoor cavity 3 respectively; the fan assembly includes a first fan 20 and a second fan 30. The first fan 20 is arranged in the indoor cavity 2, and is used to drive the airflow in the indoor cavity 2 to flow from the heat dissipation duct 11 to the outdoor cavity 3; the second fan 30 is arranged in the outdoor cavity 3, and is used to drive the airflow in the outdoor cavity 3 to flow from the fresh air duct 12 to the indoor cavity 2.

[0025] It should be noted that in the related art, the heat is dissipated from the electric control box by air cooling, that is, the cold air on the indoor side is transported into the electric control box to dissipate the heat of the electric control box, and the airflow after the heat is dissipated from the electric control box is usually directly discharged to the outdoor side. In this way, the utilization rate of the residual cold of the heat dissipation airflow is reduced, and the load-bearing capacity of the indoor heat exchanger is increased, which not only increases the energy consumption but may also affect the normal use of the air conditioner.

[0026] To this end, the heat dissipation structure provided by the present application is provided with a fresh air duct 12 and a heat dissipation duct 11 in the electric control box 10, and the fresh air duct 12 and the heat dissipation duct 11 can be connected to the indoor cavity 2 and the outdoor cavity 3 respectively. Under the action of the first fan 20, part of the airflow in the indoor cavity 2 can enter the heat dissipation duct 11, so that the airflow in the indoor cavity 2 is used to dissipate the heat of the electric control box 10, thereby ensuring the reliability of the electric control box 10, and the heat dissipation airflow is discharged into the outdoor cavity 3, part of the heat dissipation airflow can further cool the heating device in the outdoor cavity 3, and the remaining heat dissipation airflow can be mixed with the fresh air in the outdoor cavity 3; under the action of the second fan 30, the heat dissipation airflow and the fresh air enter the indoor cavity 2 through the fresh air duct 12, so that part of the heat dissipation airflow is returned to the indoor cavity 2, which not only improves the secondary utilization rate of the residual cold of the heat dissipation airflow, reduces the energy consumption of the air conditioner 1, but also introduces outdoor fresh air, reduces the concentration of indoor carbon dioxide, improves the indoor air quality, and improves the user experience.

[0027] For details, please refer to Figure 1 The air conditioner 1 can be an integrated air conditioner 1, such as a window air conditioner 1. The air conditioner 1 includes a shell 4, which can be arranged in a rectangular shape, and a partition 5 is provided in the shell 4. The partition 5 is used to separate the inner cavity of the shell 4 into an indoor cavity 2 and an outdoor cavity 3. In this embodiment, the electric control box 10 can be installed on the partition 5 so that a part of the electric control box 10 is located in the indoor cavity 2 and the other part is located in the outdoor cavity 3.

[0028] It can be understood that the shell 4 is provided with an indoor return air port and an indoor air outlet, both of which are connected to the indoor cavity 2, and an evaporator 6 is provided in the indoor cavity 2. Under the action of the first fan 20, the indoor air can enter the indoor cavity 2 through the indoor return air port, and then absorb heat through the evaporator 6 and blow to the indoor through the indoor air outlet, thereby realizing the refrigeration cycle on the indoor side; the shell 4 is also provided with an outdoor air outlet and an outdoor return air port, both of which are connected to the outdoor cavity 3, and the outdoor cavity 3 is also provided with components such as a condenser 7, a compressor, and a throttle valve. The compressor, condenser 7, evaporator 6, and throttle valve are connected by copper pipes, and the refrigerant flows in the copper pipes. Under the action of the second fan 30, the outdoor air can enter the outdoor cavity 3 through the outdoor return air port, and then blow out through the outdoor air outlet after passing through the condenser 7, thereby realizing the refrigeration cycle on the outdoor side.

[0029] Optionally, in one embodiment, see Figure 1 and Figure 2 The electric control box 10 is provided with a first air inlet 13, a first air outlet 14, a second air inlet 15 and a second air outlet 16. The first air inlet 13 is connected to the heat dissipation duct 11 and the indoor cavity 2, and the first air outlet 14 is connected to the heat dissipation duct 11 and the outdoor cavity 3; the second air inlet 15 is connected to the fresh air duct 12 and the outdoor cavity 3, and the second air outlet 16 is connected to the fresh air duct 12 and the indoor cavity 2; and / or the fresh air duct 12 is connected to the heat dissipation duct 11.

[0030] Specifically, when the air conditioner 1 is running, under the action of the first fan 20, a part of the airflow entering the indoor cavity 2 from the indoor return air port enters the heat dissipation duct 11 through the first air inlet 13 and forms a heat dissipation airflow, and the other part is blown into the room through the indoor air outlet. When the heat dissipation airflow flows in the heat dissipation duct 11, since the temperature of the heat dissipation airflow is usually much lower than the temperature in the electric control box 10, the heat dissipation airflow can absorb the heat in the electric control box 10. The heat dissipation airflow that has absorbed the heat flows out from the first air outlet 14 to the outdoor cavity 3, thereby achieving the effect of cooling the electric control box 10 and improving the reliability of the electric control box 10.

[0031] Under the action of the second fan 30, the fresh air entering the outdoor cavity 3 from the outdoor return air port is mixed with the heat dissipation airflow, and a part of the mixed airflow enters the fresh air duct 12 through the second air inlet 15 and flows to the indoor cavity 2, while the other part of the mixed airflow flows to the outdoors through the outdoor air outlet.

[0032] like Figure 2 As shown, in this embodiment, the fresh air duct 12 and the heat dissipation duct 11 are connected so that a part of the heat dissipation airflow in the heat dissipation duct 11 can enter the fresh air duct 12 and mix with the fresh air in the fresh air duct 12, and then the mixed airflow flows to the indoor cavity 2 under the action of the second fan 30, thereby reducing the discharge of the heat dissipation airflow, allowing most of the heat dissipation airflow to flow back into the indoor cavity 2, thereby improving the secondary utilization rate of the residual cooling of the heat dissipation airflow, and further reducing the energy consumption of the air conditioner 1.

[0033] Optionally, in one embodiment, see Figure 2 The electric control box 10 is provided with a first valve 141 and / or a second valve 151 . The first valve 141 is used to adjust the opening of the first air outlet 14 , and the second valve 151 is used to adjust the opening of the second air inlet 15 .

[0034] Specifically, the first valve 141 can be arranged in a flat plate shape at the first air outlet 14, and the first valve 141 can be connected to a motor, and the motor is used to drive the first valve 141 to rotate. By driving the first valve 141 to rotate at the first air outlet 14 by the motor, the opening of the first air outlet 14 can be changed, thereby changing the air volume of the heat dissipation airflow.

[0035] For example, in this embodiment, the first valve 141 can seal or fully open the first air outlet 14. When the first valve 141 seals the first air outlet 14, the heat dissipation airflow cannot be discharged to the outdoor cavity 3 through the first air outlet 14. Since the heat dissipation air duct 11 is connected with the fresh air duct 12, the heat dissipation airflow can enter the fresh air duct 12 and flow back to the indoor cavity 2, which is beneficial to improve the secondary utilization rate of the residual cooling of the heat dissipation airflow and reduce the energy consumption of the air conditioner 1; when the first valve 141 fully opens the first air outlet 14, the air volume of the heat dissipation airflow is increased, so that most of the heat dissipation airflow enters the outdoor cavity 3, and the residual cooling of the heat dissipation airflow can be used to cool the heating device in the outdoor cavity 3, which is beneficial to reduce the operating load of the air conditioner 1. In addition, in this embodiment, the opening degree of the first air outlet 14 can be set according to actual needs, and this application does not limit it here.

[0036] Likewise, see Figure 2 The second valve 151 can be arranged in a flat plate shape at the second air inlet 15, and the second valve 151 can be connected to a motor, and the motor is used to drive the second valve 151 to rotate. By driving the second valve 151 to rotate at the second air inlet 15 by the motor, the opening of the second air inlet 15 can be changed, thereby changing the air intake volume of the fresh air.

[0037] For example, in this embodiment, the second valve 151 can seal or fully open the second air inlet 15. When the second valve 151 seals the second air inlet 15, it can prevent the fresh air with a higher temperature from entering the indoor cavity 2, thereby ensuring the refrigeration performance of the air conditioner 1; when the second valve 151 fully opens the second air inlet 15, it can increase the amount of fresh air intake to keep the indoor air fresh. In addition, in this embodiment, the opening degree of the second air inlet 15 can be set according to actual needs, and this application does not limit it here.

[0038] Optionally, in one embodiment, see Figure 1 and Figure 2 When the first valve 141 is provided on the electric control box 10 , a first spring 142 is provided at the first air outlet 14 , the first valve 141 is connected to the first spring 142 , and the first spring 142 is located on a side of the first valve 141 facing away from the second fan 30 .

[0039] It is understandable that, since the spring is easily deformable, in this embodiment, the position of the first valve 141 can be changed by adjusting the compression degree of the first spring 142 , thereby changing the opening of the first air outlet 14 .

[0040] Specifically, the second fan 30 may be an axial flow fan, which has the characteristics of axial air intake and axial air outlet, and has a relative air intake side and air outlet side. Since the air intake side of the axial flow fan needs to continuously absorb air during rotation, the air intake side of the axial flow fan is in a negative pressure state, and the air outlet side of the axial flow fan needs to continuously exhaust air, so the air outlet side of the axial flow fan is in a positive pressure state.

[0041] In this embodiment, the first valve 141 and the first spring 142 can be arranged on the air inlet side of the second fan 30. When the rotation speed of the second fan 30 increases, the negative pressure on the air inlet side of the second fan 30 increases; when the rotation speed of the second fan 30 decreases, the negative pressure on the air inlet side of the second fan 30 decreases. Since the deformation of the first spring 142 is different under different negative pressures, in this embodiment, by arranging the first valve 141 on the air inlet side of the second fan 30, the compression degree of the first spring 142 can be changed by changing the rotation speed of the second fan 30, thereby changing the opening of the first air outlet 14, and the structure is simple and easy to implement.

[0042] Optionally, in one embodiment, see Figure 1 and Figure 2 When the second valve 151 is provided on the electric control box 10 , a second spring 152 is provided at the second air inlet 15 , the second valve 151 is connected to the second spring 152 , and the second spring 152 is located on the side of the second valve 151 facing away from the second fan 30 .

[0043] In this embodiment, the position of the second valve 151 can be changed by adjusting the compression degree of the second spring 152 , thereby changing the opening degree of the second air inlet 15 .

[0044] Specifically, the second valve 151 and the second spring 152 can be arranged on the air outlet side of the second fan 30. When the rotation speed of the second fan 30 increases, the positive pressure on the air outlet side of the second fan 30 increases; when the rotation speed of the second fan 30 decreases, the positive pressure on the air outlet side of the second fan 30 decreases. Since the deformation of the second spring 152 is different under different positive pressures, in this embodiment, by arranging the second valve 151 on the air outlet side of the second fan 30, the compression degree of the second spring 152 can be changed by changing the rotation speed of the second fan 30, thereby changing the opening of the second air inlet 15, and the structure is simple and easy to implement.

[0045] Optionally, in one embodiment, the heat dissipation structure further includes a temperature sensor connected to the electrical control box 10, the temperature sensor is used to detect the temperature of the airflow in the outdoor chamber 3, and the electrical control box 10 is configured to adjust the rotation speed of the second fan 30 according to the detection result of the temperature sensor.

[0046] Specifically, in this embodiment, the temperature sensing element may be a temperature sensing package or a temperature sensor, and the electric control box 10 includes a box body and an electric control board disposed in the box body, and the temperature sensing element is electrically connected to the electric control board to detect the temperature in the outdoor chamber 3. Exemplarily, when the temperature in the outdoor chamber 3 is higher than a preset temperature, the temperature sensing element transmits an electrical signal to the electric control board, and the electric control board controls the speed of the second fan 30 to increase after receiving the electrical signal; when the temperature in the outdoor chamber 3 is lower than the preset temperature, the temperature sensing element transmits an electrical signal to the electric control board, and the electric control board controls the speed of the second fan 30 to decrease after receiving the electrical signal.

[0047] Optionally, in one embodiment, see Figure 1 The air conditioner 1 includes an evaporator 6 , which is disposed in the indoor cavity 2 . The first fan 20 is used to drive the air flow in the indoor cavity 2 to flow into the heat dissipation duct 11 after passing through the evaporator 6 .

[0048] Specifically, the evaporator 6 absorbs the heat of the gas in the indoor cavity 2 through the evaporation of the refrigerant, thereby achieving the purpose of refrigeration. When the airflow passes through the evaporator 6, the temperature is reduced, and then the airflow with a lower temperature enters the electric control box 10 through the heat dissipation duct 11, which can have a good heat dissipation effect on the electric control box 10 and improve the reliability of the electric control box 10. In addition, the evaporator 6 also has a dehumidification function, which can provide dry airflow for the heat dissipation of the electric control box 10, and prevent the humid airflow from entering the electric control box 10 and affecting the operation of the electric control box 10.

[0049] For further information, see Figure 1 and Figure 2 The evaporator 6 is located at the air outlet side of the first fan 20 , and the first air inlet 13 is arranged on the side of the evaporator 6 , so that the airflow in the indoor cavity 2 can flow into the heat dissipation duct 11 after passing through the evaporator 6 .

[0050] Optionally, in one embodiment, the air conditioner 1 includes a condenser 7, which is disposed in the outdoor cavity 3, and the first fan 20 is used to drive the airflow in the indoor cavity 2 to blow from the heat dissipation duct 11 to the condenser 7. It can be understood that the condenser 7 is used to exchange heat with the airflow in the outdoor cavity 3 to absorb the coldness of the airflow in the outdoor cavity 3 and complete the refrigeration cycle of the air conditioner 1, so the temperature of the condenser 7 is relatively high.

[0051] See also Figure 1In this embodiment, the air outlet direction of the airflow at the first air outlet 14 can be arranged perpendicular to the condenser 7, so that the heat dissipation airflow can act on the condenser 7 after being blown out from the first air outlet 14. By acting the heat dissipation airflow on the condenser 7, the remaining coldness of the heat dissipation airflow can be used to further dissipate heat and cool the condenser 7, which is beneficial to improving the utilization rate of the remaining coldness of the heat dissipation airflow, reducing the energy consumption of the air conditioner 1, and improving the refrigeration efficiency of the air conditioner 1.

[0052] Optionally, in one embodiment, the fresh air duct 12 and the heat dissipation duct 11 are connected via a connecting port 17 , and a third valve is provided at the connecting port 17 , and the third valve is used to connect or isolate the fresh air duct 12 and the heat dissipation duct 11 .

[0053] Specifically, the third valve can be arranged in a flat plate shape at the connecting port 17, and the third valve can be connected to a motor, which is used to drive the third valve to rotate. By driving the third valve to rotate at the connecting port 17 by the motor, the opening of the connecting port 17 can be changed, thereby connecting or blocking the fresh air duct 12 and the heat dissipation duct 11.

[0054] The embodiment of the present application also provides an air conditioner 1, which includes a heat dissipation structure. The specific structure of the heat dissipation structure refers to the above-mentioned embodiment. Since the air conditioner 1 adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0055] See also Figure 1 and Figure 2 In this embodiment, the air conditioner 1 can control the rotation speeds of the first fan 20 and the second fan 30 according to the indoor cooling load and the temperature in the outdoor chamber 3. The specific control process is as follows:

[0056] First, when the indoor cooling load is higher than a preset value, the electric control board controls the rotation speeds of the first fan 20 and the second fan 30 to increase.

[0057] Since the first valve 141 is located on the air inlet side of the second fan 30, the increase in the speed of the second fan 30 causes the negative pressure on the air inlet side to increase, which in turn causes the first spring 142 to be in a stretched state, reducing the opening of the first air outlet 14, thereby reducing the discharge of the heat dissipation airflow in the heat dissipation air duct 11, so that most of the heat dissipation airflow can return to the indoor cavity 2 for cooling, improving the secondary utilization rate of the residual cooling of the heat dissipation airflow, and reducing the energy consumption of the air conditioner 1. Since the second valve 151 is located on the air outlet side of the second fan 30, the increase in the speed of the second fan 30 causes the positive pressure on the air outlet side to increase, which in turn causes the second spring 152 to be in a contracted state, reducing the opening of the second air inlet 15, reducing the amount of fresh air entering the indoor cavity 2, and preventing the heat load of the fresh air from affecting the indoor cooling effect.

[0058] Second, when the indoor cooling load is lower than a preset value and the temperature in the outdoor chamber 3 is higher than a preset temperature, the electric control board controls the rotation speed of the first fan 20 to decrease and the rotation speed of the second fan 30 to increase.

[0059] Since the indoor refrigeration load is low and the rotation speed of the first fan 20 is low, the outlet air temperature at the first valve 141 is reduced. Under the action of thermal expansion and contraction, the first spring 142 contracts, and the opening of the first air outlet 14 increases, thereby increasing the air outlet volume of the heat dissipation airflow and enhancing the heat dissipation effect on the condenser 7. Since the second valve 151 is located on the air outlet side of the second fan 30, the increase in the rotation speed of the second fan 30 causes the positive pressure on the air outlet side to increase, thereby causing the second spring 152 to be in a contracted state, thereby reducing the opening of the second air inlet 15 and reducing the amount of fresh air entering the indoor cavity 2, thereby preventing the heat load of the fresh air from affecting the indoor refrigeration effect.

[0060] Third, when the indoor cooling load is lower than a preset value and the temperature in the outdoor chamber 3 is lower than a preset temperature, the electric control board controls the rotation speeds of the first fan 20 and the second fan 30 to decrease.

[0061] Since the indoor refrigeration load is low and the rotation speed of the first fan 20 is low, the outlet air temperature at the first valve 141 decreases. Under the action of thermal expansion and contraction, the first spring 142 contracts, and the opening of the first air outlet 14 increases, thereby increasing the air outlet volume of the heat dissipation airflow and enhancing the heat dissipation effect on the condenser 7. Since the second valve 151 is located on the air outlet side of the second fan 30, the rotation speed of the second fan 30 is reduced, resulting in a decrease in the positive pressure on the air outlet side, which in turn causes the contraction amplitude of the second spring 152 to decrease, thereby increasing the opening of the second air inlet 15 and increasing the amount of fresh air entering the indoor cavity 2, thereby keeping the indoor air fresh.

[0062] In the above embodiments, the description of each embodiment has its own emphasis. For parts not described in detail in a certain embodiment, please refer to the relevant description of other embodiments. In the description of this application, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0063] The heat dissipation structure provided in the embodiment of the present application is introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A heat dissipation structure for an air conditioner, the air conditioner having an indoor cavity and an outdoor cavity, characterized in that: include: An electric control box, wherein a heat dissipation duct and a fresh air duct are provided in the electric control box, wherein the heat dissipation duct and the fresh air duct are connected to the indoor cavity and the outdoor cavity respectively; A fan assembly, the fan assembly comprising a first fan and a second fan, the first fan being disposed in the indoor cavity and configured to drive the airflow in the indoor cavity to flow from the heat dissipation air duct to the outdoor cavity; The second fan is disposed in the outdoor cavity, and is used to drive the airflow in the outdoor cavity to flow from the fresh air duct to the indoor cavity.

2. The heat dissipation structure according to claim 1, characterized in that: The electric control box is provided with a first air inlet, a first air outlet, a second air inlet and a second air outlet, the first air inlet is connected to the heat dissipation duct and the indoor cavity, and the first air outlet is connected to the heat dissipation duct and the outdoor cavity; The second air inlet is connected to the fresh air duct and the outdoor cavity, and the second air outlet is connected to the fresh air duct and the indoor cavity; And / or, the fresh air duct is connected to the heat dissipation duct.

3. The heat dissipation structure according to claim 2, characterized in that: The electric control box is provided with a first valve and / or a second valve, the first valve is used to adjust the opening of the first air outlet, and the second valve is used to adjust the opening of the second air inlet.

4. The heat dissipation structure according to claim 3, characterized in that: When the first valve is provided on the electric control box, a first spring is provided at the first air outlet, the first valve is connected to the first spring, and the first spring is located on a side of the first valve facing away from the second fan.

5. The heat dissipation structure according to claim 3, characterized in that: When the second valve is provided on the electric control box, a second spring is provided at the second air inlet, the second valve is connected to the second spring, and the second spring is located on a side of the second valve facing away from the second fan.

6. The heat dissipation structure according to claim 1, characterized in that: The heat dissipation structure also includes a temperature sensing element connected to the electric control box, and the temperature sensing element is used to detect the temperature of the airflow in the outdoor cavity. The electric control box is configured to adjust the rotation speed of the second fan according to the detection result of the temperature sensing element.

7. The heat dissipation structure according to claim 1, characterized in that: The air conditioner comprises an evaporator, and the evaporator is arranged in the indoor cavity. The first fan is used for driving the airflow in the indoor cavity to flow into the heat dissipation duct after passing through the evaporator.

8. The heat dissipation structure according to claim 1, characterized in that: The air conditioner comprises a condenser, and the condenser is arranged in the outdoor cavity. The first fan is used for driving the air flow in the indoor cavity to blow from the heat dissipation air duct toward the condenser.

9. The heat dissipation structure according to claim 1, characterized in that: The fresh air duct and the heat dissipation duct are connected through a connecting port, and a third valve is provided at the connecting port. The third valve is used to connect or isolate the fresh air duct and the heat dissipation duct.

10. An air conditioner, characterized in that: It comprises the heat dissipation structure as described in any one of claims 1 to 9.

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