Electric control component and air conditioner with same

Abstract

The electric control component comprises a box body assembly, a circuit assembly and a radiator, a cavity and an air duct are arranged in the box body assembly, the air duct is arranged outside the cavity and conducts heat with the wall face of the cavity, and an air outlet section of the air duct extends upwards; the circuit assembly comprises a circuit board and a heating device arranged above the circuit board, and the heating device is located in the cavity and comprises a first heating device; the radiator comprises a heat absorption part and a heat dissipation part, at least part of the heat absorption part is arranged in the cavity to transfer heat to the first heating device, and the heat dissipation part transfers heat to the air outlet section of the air duct. The radiator absorbs heat from the first heating device, so that the first heating device is cooled, meanwhile, the heat is used for heating the air channel, ascending air flow is formed in the air outlet section of the air channel, the air flow in the air channel flows according to the siphon principle, the heat dissipation speed of the heating devices in the cavity is increased, and therefore the heat dissipation efficiency of the heating devices in the cavity can be improved without depending on an environment ventilation system. Heat dissipation and cooling of the electric control component are achieved, and the application range is wide.

Description

Technical Field

[0001] The present invention relates to the technical field of electric control components, and in particular to an electric control component and an air conditioner having the same. Background Art

[0002] Some electronic control components in related technologies integrate power modules, IGBT modules, capacitors, inductors and other components. During use, the components in the electronic control box will generate a lot of heat, especially with the miniaturization and compact design of electronic control components, and the high-power and high-integration settings of electrical equipment using electronic control components, which leads to the need to increase the power of the components and generate more heat, making it difficult to dissipate the heat generated by the components, affecting the working stability and safety of the electronic control components. Usually, electronic control components need to rely on the ventilation system of the external environment to achieve heat dissipation, the heat dissipation effect needs to be improved, and the application scenarios are also relatively limited. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention is to provide an electric control component, which can have a good heat dissipation capacity and improve the working reliability of the electric control component without relying on the environmental ventilation system.

[0004] The present invention also provides an air conditioner having the above-mentioned electric control component.

[0005] According to the first aspect of the present invention, the electronic control component includes: a box body assembly, the box body assembly has a chamber and an air duct, the air duct is arranged outside the chamber and transfers heat with the wall of the chamber, and the air outlet section of the air duct extends upward; a circuit assembly, the circuit assembly includes a circuit board and a heating device arranged above the circuit board, the heating device is located in the chamber and includes a first heating device; a radiator, the radiator includes a heat absorbing part and a heat dissipating part, at least a part of the heat absorbing part is arranged in the chamber to transfer heat with the first heating device, and the heat dissipating part transfers heat with the air outlet section of the air duct.

[0006] According to the electric control component of the present invention, the radiator absorbs the heat of the first heating device, cools the heating device, and improves the working stability of the heating device. At the same time, the radiator uses the absorbed heat to heat the air outlet section of the air duct, so that the air outlet section forms an upward airflow, and uses the siphon principle to accelerate the flow of air in the air duct, so that the air flow in the air duct can be used to cool the chamber and the heating device arranged in the chamber, thereby improving the heat dissipation effect of the heating device, and because the heat of the radiator is absorbed by the air outlet section, the temperature of the radiator can be reduced, which is conducive to improving the heat dissipation efficiency of the radiator to the first heating device. Therefore, the heat dissipation and cooling of the electric control component can be achieved without relying on the environmental ventilation system, and the working stability and use safety of the electric control component are improved, and the scope of application is wide.

[0007] In some embodiments, the heat generating device further includes a second heat generating device, and the air duct includes an enclosure section enclosing the second heat generating device.

[0008] In some embodiments, the enclosed section includes an upstream section, a middle section, and a downstream section connected in sequence along the airflow direction, the middle section is located above the second heating device, the upstream section and the downstream section are located on both sides of the second heating device, and along the airflow direction, the upstream section extends upward and the downstream section extends downward.

[0009] In some embodiments, the box body assembly includes a partition wall located between the chamber and the air duct, and the thermal conductivity of a portion of the partition wall corresponding to the upstream section is greater than the thermal conductivity of a portion of the partition wall corresponding to the downstream section; and / or the thermal conductivity of a portion of the partition wall corresponding to the air outlet section is greater than the thermal conductivity of a portion of the partition wall corresponding to the downstream section.

[0010] Optionally, the vertical heights of the upstream section and the downstream section are both greater than 1 / 2 of the vertical height of the second heating device.

[0011] In some embodiments, the second heating device includes a first inductive device and a first capacitive device, the enclosure segment is multiple and includes a first enclosure segment and a second enclosure segment, the first enclosure segment encloses the first inductive device, and the second enclosure segment encloses the first capacitive device.

[0012] Furthermore, the first enclosed section is located upstream of the second enclosed section.

[0013] In some embodiments, the first inductive device, the first capacitive device and the first heating device are arranged in sequence along a first direction, and the air outlet section is located between the first capacitive device and the first heating device.

[0014] In some embodiments, the air duct has a plurality of bends, and the bends are rounded transitions.

[0015] In some embodiments, the box body assembly includes an electrical control box and an air duct shell, the chamber is defined inside the electrical control box, the electrical control box includes an inner shell and an outer shell covering the inner shell, the inner shell is a flame retardant insulating shell, and the outer shell is a fireproof and heat conductive shell, wherein the air duct shell is spaced apart outside the outer shell, and the air duct shell and the outer shell define the air duct, or the air duct shell is attached to the outside of the outer shell, and the air duct shell alone defines the air duct.

[0016] In some embodiments, the heat dissipation portion is a vertically placed metal piece; and / or, a heat-conducting medium is provided between the heat dissipation portion and the box body assembly.

[0017] In some embodiments, the heat absorption part includes a heat conductive plate arranged on the first heating device and a heat conductive pipe passing through the heat conductive plate, the heat conductive pipe is a heat pipe or a refrigerant pipe, and part of the heat conductive pipe is located outside the box body assembly to dissipate heat outside the box body assembly.

[0018] In some embodiments, the heat dissipation portion is disposed in the chamber; and / or the chamber is a closed chamber.

[0019] In some embodiments, the electronic control component also includes: a temperature detection unit, configured to perform temperature detection on the heat sink and at least one of the first capacitive device, and to perform temperature detection on the first inductive device; a control unit, configured to perform heating control on at least one of the heat sink and the first capacitive device based on at least one of the temperature of the heat sink and the first capacitive device, and the temperature of the first inductive device, so as to reduce the temperature of the first inductive device.

[0020] Furthermore, the control unit is also configured to control the heat rise of at least one of the radiator and the first capacitive device when the temperature of the radiator is lower than a first preset temperature threshold, the temperature of the first inductive device is higher than the first preset temperature threshold, and the temperature of the first capacitive device is lower than the first preset temperature threshold.

[0021] In some embodiments, the temperature rise of the heat sink is less than the difference between the first preset temperature threshold and the temperature of the heat sink, the temperature rise of the first capacitive device is less than the difference between the first preset temperature threshold and the temperature of the first capacitive device, and the temperature rise of the first capacitive device is less than the difference between the limit temperature of the first capacitive device and the temperature of the first capacitive device.

[0022] According to the second aspect of the present invention, the air conditioner includes a casing, a compressor, a first heat exchanger, a second heat exchanger, an air supply fan, an exhaust fan and the electronic control component described in any one of the above items, the casing has an air supply duct and an exhaust duct isolated from each other, the first heat exchanger is arranged in the air supply duct, the second heat exchanger is arranged in the exhaust duct, the first heat exchanger and the second heat exchanger are both connected to the compressor and serve as a condenser and an evaporator respectively, the inlet of the air supply fan is connected to the air supply duct and the outlet of the air supply fan is connected to the indoor side, the inlet of the exhaust fan is connected to the exhaust duct and the outlet of the exhaust fan is connected to the outdoor side.

[0023] According to the air conditioner of the embodiment of the present invention, by providing the electronic control component of the first aspect, the working reliability of the air conditioner can be improved.

[0024] In some embodiments, the electronic control component is arranged on the air inlet path of the exhaust fan.

[0025] In some embodiments, the refrigerant in the compressor includes carbon dioxide.

[0026] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a cross-sectional view of an electric control component according to an embodiment of the present invention;

[0028] Figure 2 is a schematic structural diagram of an electric control component according to an embodiment of the present invention;

[0029] Figure 3 is based on Figure 1 A partial enlarged view of area A of the example shown;

[0030] Figure 4 is an operating temperature diagram of a heating device before heating control is performed on an electric control component according to an embodiment of the present invention;

[0031] Figure 5 is a comparison diagram of the operating temperatures of the heating device after the electric control component performs heating control according to an embodiment of the present invention;

[0032] Figure 6 is a working flow chart of an electric control component according to one embodiment of the present invention;

[0033] Figure 7 2 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention.

[0034] Reference numerals:

[0035] Air conditioner 1000;

[0036] Electronic control component 100;

[0037] Box assembly 1; electric control box 1a; inner shell 1a1; outer shell 1a2; chamber 11; first wall C1; second wall C2; air duct shell 1b; air duct 12; air inlet section 121; surrounding section 122; upstream section 1221; middle section 1222; downstream section 1223; first surrounding section 122a; second surrounding section 122b; air outlet section 123; bend 124;

[0038] Circuit assembly 2; circuit board 21; heating element 22; first heating element 221; second heating element 222; first inductive element 2221; first capacitive element 2222;

[0039] Radiator 3; heat absorbing part 31; heat conducting plate 311; heat conducting pipe 312; heat dissipating part 32; heat conducting medium 321;

[0040] Housing 200; air supply duct 200a; air exhaust duct 200b; partition 201;

[0041] Compressor 300; first heat exchanger 400; second heat exchanger 500; air supply fan 600; exhaust fan 700. DETAILED DESCRIPTION

[0042] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0043] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific processes and examples of materials, but those of ordinary skill in the art can be aware of the applicability of other processes and / or the use of other materials.

[0044] The following describes an electric control component 100 according to an embodiment of the first aspect of the present invention with reference to the accompanying drawings.

[0045] It is worth noting that the application scenarios and functions of the electric control component 100 of the present invention are not limited. For example, the electric control component 100 can be used in an air conditioner to control the operation of components such as a compressor, a solenoid valve, and a fan of the air conditioner.

[0046] like Figure 1 and Figure 2 As shown, the electric control component 100 according to an embodiment of the present invention includes: a box body assembly 1, a circuit assembly 2 and a heat sink 3, the box body assembly 1 has a chamber 11 and an air duct 12, the circuit assembly 2 includes a circuit board 21 and a heating device 22 arranged above the circuit board 21, the heating device 22 is located in the chamber 11 and includes a first heating device 221.

[0047] like Figure 1 and Figure 2 As shown, the air duct 12 is arranged outside the chamber 11 and conducts heat with the wall of the chamber 11 (for example, direct or indirect contact heat conduction, or heat radiation heat conduction with a small spacing), and the air outlet section 123 of the air duct 12 extends upward. The heating device 22 arranged in the chamber 11 radiates heat from the wall of the chamber 11, and the air duct 12 then conducts heat with the wall of the chamber 11 to transfer the heat out, and the air flow passes through the air duct 12 and exchanges heat with the wall of the air duct 12, so that the heat flows out from the air outlet section 123 along with the air flow, accelerating the heat dissipation of the air duct 12 and the chamber 11, thereby improving the heat dissipation efficiency of the heating device 22 in the chamber 11.

[0048] like Figure 1 and Figure 2 As shown, the present invention is further provided with a heat sink 3, which includes a heat absorbing portion 31 and a heat dissipating portion 32. At least a portion of the heat absorbing portion 31 is arranged in the chamber 11 to transfer heat with the first heating device 221, and the heat dissipating portion 32 transfers heat with the air outlet section 123 of the air duct 12 (for example, heat transfer can be performed by direct or indirect contact, or heat radiation with a smaller spacing). The heat sink 3 absorbs heat from the first heating device 221 and conducts the heat to the air outlet section 123 of the air duct 12, thereby improving the heat dissipation efficiency of the first heating device 221. In addition, the heat dissipation portion 32 transfers heat with the air outlet section 123 of the air duct 12, and the air outlet section 123 extends upward. The airflow in the air outlet section 123 is heated by the heat dissipation portion 32, and the air expands due to the heat, and the density becomes lower, forming an upward airflow to flow out of the air duct 12. The pressure in the air outlet section 123 decreases, and under the action of the siphon principle, the air in the air duct 12 flows to the air outlet section 123, forming an airflow in the air duct 12, further improving the heat dissipation efficiency of the chamber 11 and the radiator 3, thereby accelerating the heat dissipation of the heating device 22. In addition, the heat of the radiator 3 is absorbed by the air outlet section 123, so that the temperature of the radiator 3 is reduced, and the radiator 3 can further improve the heat dissipation effect of the first heating device 221.

[0049] The electric control component 100 according to the embodiment of the present invention can achieve heat dissipation and cooling of the electric control component 100 without relying on an environmental ventilation system, thereby improving the working stability and use safety of the electric control component 100 and having a wide range of applications.

[0050] In some embodiments of the present invention, the chamber 11 is a closed chamber, and the heating device 22 is arranged in the closed chamber 11, which can improve the adverse effects of pollutants such as oil smoke and dust in the air on the heating device 22, thereby improving the working reliability of the heating device 22, improving the working stability of the electric control component 100, and extending the service life of the electric control component 100. It is worth noting that the "enclosed" described in this application should be understood in a broad sense, and can be absolutely closed or roughly closed. As long as there is no airflow channel for heat dissipation (such as heat dissipation holes, etc.), it can be understood as closed. Of course, the present application is not limited to this. For example, in other embodiments of the present invention, when the application scenario of the electric control component 100 is relatively clean, the chamber 11 can also be set as a non-enclosed chamber, that is, with an airflow channel for heat dissipation (such as heat dissipation holes, etc.).

[0051] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the heat dissipation portion 32 can be arranged in the chamber 11, so that the heat of the heat dissipation portion 32 is not easily lost, and can be more concentratedly used to heat the air outlet section 123 of the air duct 12, so that the airflow in the air outlet section 123 is accelerated to flow upward out of the air duct 12, and the airflow velocity in the air duct 12 is increased, thereby further improving the heat dissipation efficiency of the chamber 11 and the radiator 3.

[0052] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the heat dissipation part 32 can be arranged in the closed chamber 11. Specifically, since the heat dissipation of the electronic control component 100 does not rely on the environmental ventilation system, the heat of the heat dissipation part 32 can also be absorbed and utilized by the air outlet section 123 of the air duct 12, so the heat dissipation part 32 is arranged in the closed chamber 11, which can improve the sealing of the chamber 11 while ensuring good heat dissipation of the heat dissipation part 32.

[0053] Of course, the present application is not limited thereto. For example, in other embodiments of the present invention, the electric control component 100 may also be disposed in a scene with an environmental ventilation system. For example, in the embodiments described below, the electric control component 100 may be disposed on the air inlet path of the exhaust fan 700. In addition, in other embodiments of the present invention, the heat dissipation portion 32 may also be disposed outside the chamber 11, which will not be described in detail here.

[0054] In some embodiments of the present invention, Figure 1 and Figure 2As shown, the heating device 22 further includes a second heating device 222, and the air duct 12 includes an enclosure section 122 surrounding the second heating device 222. Thus, the second heating device 222 can radiate heat to the enclosure section 122 surrounding it, and the heat radiation area is large, which can accelerate the heat dissipation speed of the second heating device 222.

[0055] For example, Figure 1 and Figure 2 As shown, the enclosed section 122 includes an upstream section 1221, a middle section 1222 and a downstream section 1223 which are sequentially connected along the airflow direction, the middle section 1222 is located above the second heating device 222, the upstream section 1221 and the downstream section 1223 are located on both sides of the second heating device 222, and along the airflow direction, the upstream section 1221 extends upward and the downstream section 1223 extends downward.

[0056] It can be understood that the surrounding section 122 is arranged above and on both sides of the second heating element 222, and is actually located on the wall surface of the chamber 11 above and on both sides of the second heating element 222, and the air duct 12 is located outside the chamber 11 and conducts heat with the wall surface of the chamber 11. Figure 1 and Figure 2 As shown, walls are provided above and on both sides of the second heating device 222. By designing the box assembly 1 into such a structure, on the one hand, the heat radiation area of ​​the second heating device 222 can be increased, thereby improving the heat dissipation efficiency. On the other hand, the walls above and on both sides of the second heating device 222 together form a space that can cover the heat dissipation of the second heating device 222, thereby reducing the adverse thermal effects of the heat flowing to other locations on other components on the circuit board 21.

[0057] The air duct 12 is provided with an enclosing section 122 that contacts the wall surface above and on both sides of the second heating element 222 for heat transfer, thereby increasing the contact area between the air duct 12 and the chamber 11. When the airflow flows through the enclosing section 122 in the air duct 12, it first flows upward along the upstream section 1221, then flows along the extension direction of the middle section 1222, and finally flows downward along the downstream section 1223. The airflow fully exchanges heat, thereby increasing the heat transfer efficiency, thereby accelerating the heat dissipation speed of the second heating element 222.

[0058] In some embodiments of the present invention, Figure 1 and Figure 3As shown, the box body assembly 1 includes a partition wall located between the chamber 11 and the air duct 12, that is, the wall of the box body assembly 1 located between the chamber 11 and the air duct 12 is the partition wall, the portion of the partition wall located between the chamber 11 and the upstream section 1221 is the first wall C1, the portion of the partition wall located between the chamber 11 and the downstream section 1223 is the second wall C2, and the thermal conductivity of the portion of the partition wall corresponding to the upstream section 1221 is greater than the thermal conductivity of the portion of the partition wall corresponding to the downstream section 1223, that is, the thermal conductivity of the first wall C1 is greater than the thermal conductivity of the second wall C2.

[0059] The upstream section 1221 and the downstream section 1223 both extend in the up-down direction. After the upstream section 1221 exchanges heat with the first wall C1, the airflow in the upstream section 1221 is heated and expanded, the air density becomes lower, and an upward airflow is formed, which flows upward. Similarly, after the downstream section 1223 exchanges heat with the second wall C2, the airflow in the downstream section 1223 is heated and expanded, the air density becomes lower, and an upward airflow is also formed, which has a tendency to flow upward. Therefore, the present invention sets the thermal conductivity of the first wall C1 to be greater than the thermal conductivity of the second wall C2, the heat exchange efficiency between the first wall C1 and the upstream section 1221 is better than the heat exchange efficiency between the second wall C2 and the downstream section 1223, and the airflow rise in the upstream section 1221 is stronger than the airflow rise in the downstream section 1223, so that the airflow flows smoothly from the upstream section 1221 to the downstream section 1223.

[0060] In addition, the air flow is heated and expanded when flowing in the upstream section 1221 , the air density becomes lower, and an upward airflow is formed, forming an airflow in the air duct 12 . The air flow in the upstream section 1221 is accelerated to flow upward, and the air flow velocity in the air duct 12 is increased, thereby accelerating the heat dissipation of the heating device 22 .

[0061] In some specific embodiments of the present invention, the first wall C1 is a copper piece, and the second wall C2 is an aluminum piece, so that the thermal conductivity of the first wall C1 is greater than that of the second wall C2, and the box assembly 1 does not have to be entirely made of copper, thereby saving manufacturing costs. Alternatively, the first wall C1 and the second wall C2 may be configured to have the same base material, but a coating with better thermal conductivity may be provided on the first wall C1.

[0062] In some embodiments of the present invention, the box body assembly 1 includes a partition wall located between the chamber 11 and the air duct 12, that is, the wall of the box body assembly 1 located between the chamber 11 and the air duct 12 is the partition wall, and the thermal conductivity of the portion of the partition wall corresponding to the air outlet section 123 is greater than the thermal conductivity of the portion of the partition wall corresponding to the downstream section 1223.

[0063] In the flow direction of the airflow, the air outlet section 123 is located downstream of the enclosing section 122, that is, the air outlet section 123 is located downstream of the downstream section 1223. The present invention sets the thermal conductivity of the portion of the next wall corresponding to the air outlet section 123 to be greater than the thermal conductivity of the portion of the next wall corresponding to the downstream section 1223, and the heat exchange efficiency between the portion of the next wall corresponding to the air outlet section 123 and the air outlet section 123 is better than the heat exchange efficiency of the portion of the next wall corresponding to the downstream section 1223, and the airflow in the air outlet section 123 rises more strongly due to heat than the airflow in the downstream section 1223, so that the airflow from the downstream section 1223 to the air outlet section 123 flows smoothly, the ventilation efficiency is improved, and it is beneficial to heat dissipation.

[0064] In some embodiments of the present invention, the thermal conductivity of the portion of the wall corresponding to the upstream section 1221 is greater than the thermal conductivity of the portion of the wall corresponding to the downstream section 1223, and the thermal conductivity of the portion of the wall corresponding to the outlet section 123 is greater than the thermal conductivity of the portion of the wall corresponding to the downstream section 1223. Thus, the airflow rises more strongly in the upstream section 1221 than in the downstream section 1223, so that the airflow flows smoothly from the upstream section 1221 to the downstream section 1223, and the airflow rises more strongly in the outlet section 123 than in the downstream section 1223, so that the airflow flows smoothly from the downstream section 1223 to the outlet section 123, thereby better improving the ventilation efficiency and facilitating heat dissipation. In addition, the air flow is heated and expanded when flowing in the upstream section 1221, the air density becomes lower, and an upward airflow is formed, forming an airflow in the air duct 12, and the air flow in the upstream section 1221 is accelerated to flow upward; at the same time, the air flow in the air outlet section 123 is also accelerated to flow upward, the gas in the air duct 12 is accelerated secondarily, and the air flow velocity in the air duct 12 is further increased, thereby accelerating the heat dissipation of the heating device 22.

[0065] In some embodiments of the present invention, Figure 1 As shown, the vertical heights of the upstream section 1221 and the downstream section 1223 are both greater than 1 / 2 of the vertical height of the second heating device 222. The heat exchange contact area between the upstream section 1221 and the downstream section 1223 and the wall is large, and the airflow fully exchanges heat to improve the heat transfer efficiency, thereby accelerating the heat dissipation speed of the second heating device 222.

[0066] In some embodiments of the present invention, the first heating device 221 includes a power device, and the second heating device 222 includes an inductive device and / or a capacitive device.

[0067] Exemplarily, the first heat-generating device 221 includes at least one power device with relatively large heat generation, such as a compressor IPM (IPM is the abbreviation of Intelligent Power Module), a fan IPM (IPM is the abbreviation of Intelligent Power Module), an IGBT (Insulated Gate Bipolar Transistor), and a bridge stack and other relatively small and short components.

[0068] Exemplarily, the second heating device 222 includes at least one first inductive device 2221. For example, the inductive device with higher heat generation among the inductive devices can be the first inductive device 2221. For example, in some examples, the first inductive device 2221 can be connected to a strong current, such as a PFC inductor (wherein PFC is the abbreviation of Power Factor Correction) or a common mode inductor, etc., which generates higher heat. Moreover, the height of the first inductive device 2221 is relatively high, and the far end of the first inductive device 2221 (i.e., the end away from the circuit board 21) is usually the position where the first inductive device 2221 is closest to the box body assembly 1. In some examples, the distance between the far end of the first inductive device 2221 and the box body assembly 1 can be limited to 5mm-10mm. While improving the heat radiation heat dissipation efficiency, it can also meet safety regulations and improve safety.

[0069] Exemplarily, the second heating device 222 includes at least one first capacitive device 2222, and the first capacitive device 2222 is a number of capacitive devices with relatively large heat generation among all capacitive devices. For example, the first capacitive device 2222 is a high-voltage electrolytic capacitor with relatively large heat generation, and the heat generation is relatively high. Moreover, the height of the first capacitive device 2222 is relatively high. The far end of the first capacitive device 2222 (i.e., the end away from the circuit board 21) is usually the position where the first capacitive device 2222 is closest to the box body assembly 1. In some examples, the distance between the far end of the first capacitive device 2222 and the box body assembly 1 can be limited to 5mm-10mm. While improving the heat dissipation efficiency of thermal radiation, it can also meet safety regulations and improve safety.

[0070] In some embodiments of the present invention, Figure 1 and Figure 2As shown, the second heating device 222 includes a first inductive device 2221 and a first capacitive device 2222. The enclosed section 122 is multiple and includes a first enclosed section 122a and a second enclosed section 122b. The first enclosed section 122a encloses the first inductive device 2221, and the second enclosed section 122b encloses the first capacitive device 2222. By providing the first enclosed section 122a and the second enclosed section 122b corresponding to the first inductive device 2221 and the first capacitive device 2222, respectively, the airflow fully exchanges heat, thereby improving the heat dissipation efficiency of the first inductive device 2221 and the first capacitive device 2222.

[0071] The box assembly 1 is provided with walls above and on both sides of the first inductive device 2221 and the first capacitive device 2222, and the first enclosing section 122a and the second enclosing section 122b are respectively enclosed on the walls corresponding to the first inductive device 2221 and the first capacitive device 2222. On the one hand, the heat radiation area of ​​the first inductive device 2221 and the first capacitive device 2222 can be increased, and the contact area between the first enclosing section 122a and the second enclosing section 122b and the chamber 11 is large, and the airflow heat exchange effect is good, which jointly improves the heat dissipation efficiency of the first inductive device 2221 and the first capacitive device 2222. On the other hand, the walls above and on both sides of the first inductive device 2221 together form a space that can cover the heat dissipation of the first inductive device 2221, and the walls above and on both sides of the first capacitive device 2222 together form a space that can cover the heat dissipation of the first capacitive device 2222. The heat generated by the first inductive device 2221 and the first capacitive device 2222 are not easy to affect each other, which improves the adverse thermal effects caused by heat crosstalk and improves the working reliability of the first inductive device 2221 and the first capacitive device 2222.

[0072] In some embodiments of the present invention, the vertical heights of the upstream section 1221 of the first enclosed section 122a and the downstream section 1223 of the first enclosed section 122a are consistent, the vertical heights of the upstream section 1221 of the second enclosed section 122b and the downstream section 1223 of the second enclosed section 122b are consistent, and the vertical height of the first enclosed section 122a is higher than the vertical height of the second enclosed section 122b.

[0073] In this way, when the height of the first inductive device 2221 is higher than the height of the first capacitive device 2222, when the distance between the distal end of the first inductive device 2221 and the box body component 1 is a preset value, the distance between the distal end of the first capacitive device 2222 and the box body component 1 can also be a preset value. Therefore, the height of the wall surface set on both sides of the first capacitive device 2222 of the box body component 1 is relatively low, and the height of the wall surface set on both sides of the first inductive device 2221 of the box body component 1 is relatively high, which can not only meet the distance requirements between the first capacitive device 2222 and the first inductive device 2221 and the box body component 1, but also save the manufacturing materials of the box body component 1 and save the manufacturing cost. Correspondingly, the vertical height of the first enclosure section 122a is higher than the vertical height of the second enclosure section 122b.

[0074] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, along the airflow direction, the first enclosed section 122a is located upstream of the second enclosed section 122b. The direction of the arrow is the airflow direction. After the airflow enters the air duct 12, it first flows through the first enclosed section 122a, then flows through the second enclosed section 122b, and finally flows out of the air duct 12 along the air outlet section 123.

[0075] Figure 4 and Figure 5 The temperature of the first inductive device 2221, the first capacitive device 2222 and the heat sink 3 when they are working is shown. Figure 4 and Figure 5 As shown, the heat generated by the first inductive device 2221 is greater than the heat generated by the first capacitive device 2222 , so the airflow entering the air duct 12 first flows through the first surrounding section 122a to dissipate heat for the first inductive device 2221 , thereby improving the overall heat dissipation effect for the second heating device 222 .

[0076] It can be understood that the first enclosed section 122a and the second enclosed section 122b both include an upstream section 1221, a middle section 1222 and a downstream section 1223 which are sequentially connected along the airflow direction, and the first enclosed section 122a is located upstream of the second enclosed section 122b, so the airflow flows into the upstream section 1221 of the second enclosed section 122b after flowing through the downstream section 1223 of the first enclosed section 122a.

[0077] Among them, the thermal conductivity of the upstream section 1221 of the second enclosure section 122b corresponding to the neighboring wall is greater than the thermal conductivity of the downstream section 1223 of the first enclosure section 122a corresponding to the neighboring wall. The airflow in the upstream section 1221 of the second enclosure section 122b is heated more strongly than the airflow in the downstream section 1223 of the first enclosure section 122a, thereby making the airflow from the first enclosure section 122a to the second enclosure section 122b flow smoothly, thereby improving ventilation efficiency and facilitating heat dissipation.

[0078] The air duct 12 of the embodiment of the present invention includes at least two upward bending structures, namely a first enclosed section 122a and a second enclosed section 122b. The airflow is accelerated for the first time in the upstream section 1221 of the first enclosed section 122a, for the second time in the upstream section 1221 of the second enclosed section 122b, and for the third time in the air outlet section 123, thereby forming an airflow in the air duct 12, increasing the flow rate of the airflow in the air duct 12, and improving the heat dissipation efficiency.

[0079] By utilizing the heat generated by the heating device 22 to heat the air in the air duct 12, and by setting different thermal conductivities at different locations of the partition wall, a flowing airflow can be formed in the air duct 12. The electric control component 100 of the embodiment of the present invention does not need to provide an additional fan to provide an airflow flowing in the air duct 12, thereby simplifying the structure of the electric control component 100, reducing energy consumption, and improving the heat dissipation efficiency of the heating device 22.

[0080] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the first inductive device 2221, the first capacitive device 2222 and the first heating device 221 are arranged in sequence along the first direction, so the first enclosure section 122a, the second enclosure section 122b and the air outlet section 123 are arranged in sequence in the first direction, and the air outlet section 123 is located between the first capacitive device 2222 and the first heating device 221.

[0081] It can be understood that the airflow flowing in the first enclosed section 122a is used to improve the heat dissipation efficiency of the first inductive device 2221, and the airflow flowing in the second enclosed section 122b is used to improve the heat dissipation efficiency of the first capacitive device 2222. The first heating device 221 transfers heat to the air outlet section 123 through the radiator 3. Therefore, the air duct 12 does not need to be provided with a structure to enclose the first heating device 221. Only the air outlet section 123 extending upward is provided to meet the heat dissipation requirements of the first heating device 221, thereby simplifying the structure of the air duct 12, reducing the manufacturing difficulty, and saving the manufacturing cost of the box assembly 1.

[0082] Figure 4 and Figure 5 The working temperatures of the first inductive device 2221, the first capacitive device 2222 and the radiator 3 are shown, wherein the temperature of the radiator 3 can be regarded as the temperature of the first heating device 221. It can be intuitively concluded from the figure that the first inductive device 2221 generates the largest amount of heat, which is greater than the heat generated by the first capacitive device 2222 and the radiator 3, and the heat generated by the radiator 3 is greater than the heat generated by the first capacitive device 2222.

[0083] The first inductive device 2221 is arranged upstream of the first capacitive device 2222. The airflow entering the air duct 12 first flows through the first enclosure section 122a to dissipate heat for the first inductive device 2221. The temperature of the airflow flowing through the first enclosure section 122a increases. However, since the initial temperature of the airflow entering the air duct 12 is relatively low, even after heat exchange with the first inductive device 2221 with the largest heat generation, the temperature of the airflow is still lower than the temperature of the first capacitive device 2222. Then the airflow flows through the second enclosure section 122b to dissipate heat for the first capacitive device 2222. The temperature of the airflow flowing through the second enclosure section 122b increases. However, since the heat generation of the first capacitive device 2222 is the smallest, the temperature of the airflow flowing out of the second enclosure section 122b does not increase much, and the temperature of the airflow is still the temperature of the first radiator 3. Finally, the airflow passes through the outlet section 123 to dissipate heat for the radiator 3 and flows out of the air duct 12.

[0084] In the embodiment of the present invention, the first inductive device 2221, the first capacitive device 2222 and the first heating device 221 are arranged in sequence along the first direction, and the airflow is arranged to exchange heat with the first inductive device 2221, the first capacitive device 2222 and the first heating device 221 in sequence. The airflow passing through the air duct 12 can dissipate heat for the first inductive device 2221, the first capacitive device 2222 and the first heating device 221, thereby improving the heat dissipation efficiency of the heating device 22, avoiding adverse thermal effects between each other, and improving the working stability of the heating device 22.

[0085] In some specific embodiments of the present invention, the working temperature of the first inductive device 2221 is about 85° C., the working temperature of the first capacitive device 2222 is about 55° C., and the working temperature of the heat sink 3 is about 68° C. The initial temperature of the airflow entering the air duct 12 is about 35° C., the temperature of the airflow after passing through the first surrounding section 122a is about 45° C., which is lower than the working temperature of the first capacitive device 2222, and the temperature of the airflow after passing through the second surrounding section 122b is about 50° C., which is lower than the working temperature of the heat sink 3.

[0086] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the air duct 12 also includes an air inlet section 121, which is located upstream of the first enclosed section 122a. The air inlet section 121 is connected to the upstream section 1221 of the first enclosed section 122a, and the upstream section 1221 of the first enclosed section 122a extends upward. The air expands due to heat in the upstream section 1221 of the first enclosed section 122a, and its density becomes lower, forming an upward airflow. The air pressure in the first enclosed section 122a decreases, and the air inlet section 121 is connected to the outside of the air duct 12, so that the air is sucked into the air duct 12 through the air inlet section 121.

[0087] In some embodiments of the present invention, Figure 3As shown, the air duct 12 has a plurality of bends 124, and the bends 124 are rounded transitions. By providing the bends 124, the wind resistance of the airflow in the air duct 12 can be reduced, the airflow velocity can be increased, and the heat dissipation of the heating device 22 is facilitated.

[0088] like Figure 3 As shown, the upstream section 1221 extends upward, the middle section 1222 extends along the first direction, and the downstream section 1223 extends downward, so a bend 124 is provided between the upstream section 1221 and the middle section 1222, and a bend 124 is provided between the middle section 1222 and the downstream section 1223, which can reduce the wind resistance of the airflow flowing in the surrounding section 122, which is beneficial to the heat dissipation of the second heating device 222. Figure 1 As shown, a bend 124 is provided between the air inlet section 121 and the upstream section 1221 of the first surrounding section 122a, which is beneficial for airflow to enter the air duct 12, increase air intake, and improve heat dissipation efficiency.

[0089] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the box body assembly 1 includes an electric control box 1a and an air duct shell 1b, a chamber 11 is defined inside the electric control box 1a, the electric control box 1a includes an inner shell 1a1 and an outer shell 1a2 covering the inner shell 1a1, the inner shell 1a1 is a flame retardant insulating shell, the outer shell 1a2 is a fireproof heat conductive shell, wherein the air duct shell 1b is spaced apart outside the outer shell 1a2, and an air duct 12 is defined between the air duct shell 1b and the outer shell 1a2, or the air duct shell 1b is attached to the outside of the outer shell 1a2, and the air duct shell 1b alone defines the air duct 12.

[0090] The electric control box 1a has a double-layer structure. The outer shell 1a2 can ensure the structural reliability and fire resistance of the electric control box 1a. The insulating shell can be used for insulation and flame retardancy, thereby improving the safety of the electric control component 100. The outer shell 1a2 has strong thermal conductivity, which is conducive to heat dissipation.

[0091] Alternatively, if Figure 1 As shown in the figure, the air duct shell 1b is arranged outside the outer shell 1a2 at a distance, and an air duct 12 is defined between the air duct shell 1b and the outer shell 1a2. The air flow flowing in the air duct 12 directly contacts the outer shell 1a2 for heat exchange, which is beneficial to heat dissipation.

[0092] Also optionally, an air duct 12 is separately defined inside the air duct shell 1b, and the air duct shell 1b and the electric control box 1a are in contact with each other through the shell wall. There is no need to consider the sealing effect between the air duct shell 1b and the electric control box 1a, which facilitates the disassembly and assembly between the air duct shell 1b and the electric control box 1a, and is conducive to the replacement and maintenance of the electric control box 1a.

[0093] In some specific embodiments of the present invention, the outer shell 1a2 is a metal shell, and the inner shell 1a1 is a plastic shell.

[0094] In some embodiments of the present invention, at the corresponding parts of the enclosed section 122 and the electric control box 1a, the inner shell 1a1 of the electric control box 1a is at least partially formed with an opening, so that the second heating device 222 can directly radiate heat with the outer shell 1a2, which is beneficial to the thermal radiation heat dissipation of the second heating device 222 to the electric control box 1a, thereby improving the thermal radiation heat dissipation efficiency of the second heating device 222.

[0095] Optionally, an opening is formed in the inner shell 1a1 of the electric control box 1a at the corresponding position between the upstream section 1221 and the electric control box 1a, so that the thermal conductivity of the part corresponding to the upstream section 1221 of the electric control box 1a is greater than the thermal conductivity of the part corresponding to the downstream section 1223 of the electric control box 1a.

[0096] Optionally, openings are formed in the inner shell 1a1 of the electric control box 1a at the corresponding positions of the upstream section 1221, the middle section 1222 and the electric control box 1a; optionally, openings are formed in the inner shell 1a1 of the electric control box 1a at the corresponding positions of the upstream section 1221, the middle section 1222 and the downstream section 1223 and the electric control box 1a, thereby comprehensively improving the thermal radiation heat dissipation efficiency of the second heating device 222.

[0097] In some embodiments of the present invention, the heat dissipation portion 32 is a vertically placed metal piece, which has good thermal conductivity, improves heat transfer efficiency, and is conducive to heat dissipation. The heat dissipation portion 32 extends vertically, which can increase the contact area between the heat dissipation portion 32 and the air outlet section 123 and improve the heat transfer effect.

[0098] In some embodiments of the present invention, Figure 1 As shown, a heat-conducting medium 321 (such as thermally conductive silica gel, thermally conductive silicone grease, etc.) is provided between the heat dissipation part 32 and the box body assembly 1, which can not only improve the heat transfer efficiency of the heat dissipation part 32, but also play an electrical isolation role, thereby improving the safety of the radiator 3.

[0099] In some embodiments of the present invention, Figure 2 As shown, the heat absorbing part 31 includes a heat conducting plate 311 disposed on the first heating element 221 and a heat conducting pipe 312 penetrating the heat conducting plate 311. The heat conducting pipe 312 is a heat pipe or a refrigerant pipe, and a portion of the heat conducting pipe 312 is located outside the box body assembly 1 to dissipate heat outside the box body assembly 1. The heat absorbing part 31 not only conducts the heat of the first heating element 221 to the heat dissipating part 32, but also conducts the heat of the first heater to the outside of the contract assembly through the heat conducting pipe 312, thereby accelerating the heat dissipation of the first heating element 221.

[0100] Figure 4The temperature of the first inductive device 2221, the first capacitive device 2222 and the heat sink 3 when they are working is shown. It can be directly concluded from the figure that the first inductive device 2221 generates the most heat, and the temperature of the first inductive device 2221 when working may even exceed the maximum limit temperature. Long-term operation may shorten the service life of the first inductive device 2221.

[0101] In some embodiments of the present invention, the electric control component 100 further includes a temperature detection unit, which is configured to perform temperature detection on at least one of the radiator 3 and the first capacitive device 2222, and to perform temperature detection on the first inductive device 2221. Optionally, the temperature detection unit may perform temperature detection on the radiator 3 and the first inductive device 2221; further optionally, the temperature detection unit may perform temperature detection on the first capacitive device 2222 and the first inductive device 2221; further optionally, the temperature detection unit may perform temperature detection on all of the radiator 3, the first capacitive device 2222, and the first inductive device 2221.

[0102] The electric control component 100 further includes a control unit, which is configured to perform heating control on at least one of the heat sink 3 and the first capacitive device 2222 according to at least one of the temperature of the heat sink 3 and the temperature of the first capacitive device 2222, and the temperature of the first inductive device 2221, so as to reduce the temperature of the first inductive device 2221. It can be understood that the heating control on the heat sink 3 can be performed at least by performing heating control on the first heating device 221.

[0103] The control unit and the temperature detection unit correspond to each other. For example, when the temperature detection unit detects the temperature of the radiator 3 and the first inductive device 2221, the control unit controls the heating of the radiator 3 according to the temperature of the radiator 3 and the temperature of the first inductive device 2221 detected by the temperature detection unit, so as to reduce the temperature of the first inductive device 2221. For another example, when the temperature detection unit detects the temperature of the radiator 3, the first capacitive device 2222 and the first inductive device 2221, the control unit controls the heating of the radiator 3 and / or the first capacitive device 2222 according to the temperature of the radiator 3, the temperature of the first capacitive device 2222 and the temperature of the first inductive device 2221 detected by the temperature detection unit, so as to reduce the temperature of the first inductive device 2221.

[0104] The embodiment of the present invention increases the heat dissipation of the heat sink 3 and / or the first capacitive device 2222 by controlling the heat generation of at least one of the heat sink 3 and the first capacitive device 2222. For example, by increasing the heat generation of the heat sink 3, the heat sink 3 heats the airflow in the air outlet section 123, accelerates the heat expansion of the air in the air outlet section 123, and further increases the airflow velocity in the air duct 12. The airflow in the first enclosed section 122a also accelerates, improving the heat dissipation efficiency of the first inductive device 2221, so as to reduce the temperature of the first inductive device 2221.

[0105] For another example, the heat generation of the first capacitive device 2222 is increased, and the first capacitive device 2222 heats the air flow in the second enclosed section 122b, accelerating the heat expansion of the air in the upstream section 1221 of the second enclosed section 122b, thereby further increasing the air flow velocity in the air duct 12. The air flow in the first enclosed section 122a is also accelerated, improving the heat dissipation efficiency of the first inductive device 2221, so as to reduce the temperature of the first inductive device 2221.

[0106] For example, the heat generated by the heat sink 3 and the first capacitive device 2222 is increased, the air in the air outlet section 123 is heated and expanded faster, and the air in the upstream section 1221 of the second surrounding section 122b is also heated and expanded faster, thereby further increasing the airflow velocity in the air duct 12. The airflow in the first surrounding section 122a is also accelerated, improving the heat dissipation efficiency of the first inductive device 2221, so as to reduce the temperature of the first inductive device 2221.

[0107] In some embodiments of the present invention, Figure 4 As shown, the control unit is also configured to control the heating of at least one of the radiator 3 and the first capacitive device 2222 when the temperature detection unit detects that the temperature TL of the radiator 3 is less than the first preset temperature threshold Tmax, the temperature TP of the first inductive device 2221 is greater than the first preset temperature threshold Tmax, and the temperature TC of the first capacitive device 2222 is less than the first preset temperature threshold Tmax.

[0108] It is worth noting that if Figure 4 and Figure 5 As shown, the temperature TL of the radiator 3, the temperature TP of the first inductive device 2221 and the temperature TC of the first capacitive device 2222 are the respective temperatures of the radiator 3, the first inductive device 2221 and the first capacitive device 2222 when the heat generation of the radiator 3 and the first capacitive device 2222 is not controlled.

[0109] Exemplarily, the first preset temperature threshold Tmax is the maximum limit temperature of the first inductive device 2221. When this temperature is exceeded, the failure risk of the first inductive device 2221 increases, and working at a temperature higher than the maximum limit temperature for a long time will shorten the working temperature of the first inductive device 2221. Therefore, when the temperature detection unit detects that the temperature TP of the first inductive device 2221 is greater than the first preset temperature threshold Tmax, and the temperature TL of the heat sink 3 and / or the temperature TC of the first capacitive device 2222 is still less than the first preset temperature threshold Tmax, it is necessary to control the heating of at least one of the heat sink 3 and the first capacitive device 2222 to reduce the temperature of the first inductive device 2221.

[0110] In some embodiments of the present invention, Figure 5 As shown, the temperature rise ΔL of the radiator 3 is smaller than the difference between the first preset temperature threshold value Tmax and the temperature TL of the radiator 3, the temperature rise ΔC of the first capacitive device 2222 is smaller than the difference between the first preset temperature threshold value Tmax and the temperature TC of the first capacitive device 2222, and the temperature rise ΔC of the first capacitive device 2222 is smaller than the difference between the limit temperature T1 of the first capacitive device 2222 and the temperature of the first capacitive device 2222TC.

[0111] When the heat generation of the radiator 3 is controlled, the temperature increase ΔL of the radiator 3 is less than the difference between the first preset temperature threshold value Tmax and the temperature TL of the radiator 3, that is, the sum of the temperature increase ΔL of the radiator 3 and the temperature TL of the radiator 3 when the heat generation of the radiator 3 is not controlled is less than the first preset temperature threshold value Tmax. While the heat generation of the radiator 3 is controlled to reduce the temperature of the first inductive device 2221, it is also necessary to ensure that the operating temperature of the radiator 3 is always less than the first preset temperature threshold value Tmax to improve the working stability of the radiator 3.

[0112] When the first capacitive device 2222 is subjected to heating control, the temperature rise ΔC of the first capacitive device 2222 is smaller than the difference between the first preset temperature threshold Tmax and the temperature TC of the first capacitive device 2222. Figure 5As shown, the sum of the temperature rise ΔC of the first capacitive device 2222 and the temperature TC of the first capacitive device 2222 when the first capacitive device 2222 is not subjected to heating control is less than the first preset temperature threshold value Tmax. While the first capacitive device 2222 is subjected to heating control to reduce the temperature of the first inductive device 2221, it is also necessary to ensure that the operating temperature of the first capacitive device 2222 is always less than the first preset temperature threshold value Tmax. At the same time, since the service life of the first capacitive device 2222 is closely related to the temperature, when the first capacitive device 2222 is subjected to heating control, it is also necessary to satisfy that the temperature rise ΔC of the first capacitive device 2222 is less than the difference between the limiting temperature T1 of the first capacitive device 2222 and the temperature of the first capacitive device 2222TC, that is, as shown in FIG. Figure 5 As shown, the sum of the temperature increase ΔC of the first capacitive device 2222 and the temperature TC of the first capacitive device 2222 when the first capacitive device 2222 is not subjected to heat control is less than the limit temperature T1 of the first capacitive device 2222, thereby improving the working stability of the first capacitive device 2222.

[0113] By controlling the heating of at least one of the heat sink 3 and the first capacitive device 2222, the temperature of the first inductive device 2221 decreases. Figure 4 and Figure 5 As shown, the difference between the temperature TP of the first inductive device 2221 and the temperature reduction amount ΔL of the first inductive device 2221 is less than the first preset temperature threshold Tmax, and the operating temperature of the first inductive device 2221 is reduced to below the first preset temperature threshold Tmax, thereby improving the working stability of the first inductive device 2221 and extending the service life of the first inductive device 2221.

[0114] In some embodiments, the temperature of the first capacitive device 2222 may be increased by increasing the ripple current of the first capacitive device 2222 .

[0115] The air conditioner 1000 according to the second embodiment of the present invention is described below.

[0116] The air conditioner 1000 according to the embodiment of the present invention includes a housing 200, a compressor 300, a first heat exchanger 400, a second heat exchanger 500, an air supply fan 600, an exhaust fan 700, and an electric control component 100 of any of the above items. For example, the electric control component 100 can be used to control the actions of the compressor 300, the air supply fan 600, and the exhaust fan 700. The first heat exchanger 400 and the second heat exchanger 500 exchange heat with the air flow passing through, and the air supply fan 600 and the exhaust fan 700 provide a flowing air flow.

[0117] The shell 200 has an air supply duct 200a and an exhaust duct 200b which are isolated from each other by a partition 201. The first heat exchanger 400 is arranged in the air supply duct 200a, and the second heat exchanger 500 is arranged in the exhaust duct 200b. The first heat exchanger 400 and the second heat exchanger 500 are both connected to the compressor 300 and serve as a condenser and an evaporator respectively. The inlet of the air supply fan 600 is connected to the air supply duct 200a and the outlet of the air supply fan 600 is connected to the indoor side. The inlet of the exhaust fan 700 is connected to the exhaust duct 200b and the outlet of the exhaust fan 700 is connected to the outdoor side.

[0118] It is worth noting that the air conditioner 1000 can cool the indoor side or heat the indoor side. When the air conditioner 1000 cools the indoor side, the first heat exchanger 400 acts as an evaporator, the second heat exchanger 500 acts as a condenser, the airflow provided by the air supply fan 600 passes through the evaporator to release heat, and the cold air flows into the indoor side along the air supply duct 200a, thereby cooling the indoor side; the airflow provided by the exhaust fan 700 passes through the condenser to take away the heat of the condenser, and the hot air flows to the outdoor side along the exhaust duct 200b. When the air conditioner 1000 heats the indoor side, the first heat exchanger 400 acts as a condenser, the second heat exchanger 500 acts as an evaporator, the airflow provided by the air supply fan 600 passes through the condenser to absorb heat, and the hot air flows into the indoor side along the air supply duct 200a, thereby heating the indoor side; the airflow provided by the exhaust fan 700 passes through the evaporator to release heat, and the cold air flows to the outdoor side along the exhaust duct 200b. Alternatively, the air conditioner 1000 may have only one of the above two functions.

[0119] According to the air conditioner 1000 of the embodiment of the present invention, the working reliability of the air conditioner 1000 can be improved by providing the above-mentioned electronic control component 100.

[0120] Further, the electric control component 100 is arranged on the air inlet path of the exhaust fan 700, for example, the electric control component 100 is arranged in the exhaust air duct 200b, or the electric control component 100 can also be arranged outside the exhaust air duct 200b, for example, the electric control component 100 is arranged outside the housing 200, but the exhaust fan 700 can suck away the airflow from the electric control component 100. Since the outlet of the exhaust air duct 200b is connected to the outdoor side, the heat generated by the electric control component 100 can be directly discharged to the outdoor side through the exhaust fan 700, avoiding the heat generated by the electric control component 100 from flowing to the indoor side under the action of the airflow, avoiding affecting the temperature adjustment effect of the air conditioner 1000, thereby ensuring the temperature adjustment stability and reliability of the air conditioner 1000.

[0121] In some embodiments, the electric control component 100 is disposed in the exhaust duct 200b. When the electric control component 100 is disposed in the exhaust duct 200b, the exhaust fan 700 provides a flowing airflow to the second heat exchanger 500, and the exhaust fan 700 also causes the airflow to flow through the electric control component 100 to dissipate heat from the electric control component 100. At least part of the flowing airflow provided by the exhaust fan 700 flows into the air duct 12, thereby improving the heat dissipation efficiency of the heat generating device 22.

[0122] By arranging the electric control component 100 in the exhaust air duct 200b, there is no need to arrange an additional exhaust fan, thus simplifying the structure of the air conditioner 1000, reducing the volume and manufacturing cost of the air conditioner 1000, and facilitating the installation of the air conditioner 1000. Also, since the electric control component 100 is arranged in the exhaust air duct 200b, the electric control component 100 will not interfere with the air supply on the indoor side, and will not affect the indoor cooling or heating efficiency of the air conditioner 1000.

[0123] It is worth noting that although the electronic control component 100 and the second heat exchanger 500 are both arranged in the exhaust duct 200b, the relative position relationship between the electronic control component 100 and the second heat exchanger 500 is not limited. They can have an upstream and downstream relationship (that is, the airflow flows through the two in sequence) or not have an upstream and downstream relationship (that is, a parallel relationship, the airflow flows through the two at the same time).

[0124] In some embodiments, the air supply fan 600 and the exhaust fan 700 are both disposed outside the housing 200 and assembled to the housing 200. Alternatively, in other embodiments, such as Figure 7 As shown, the exhaust fan 700 and the air supply fan 600 are both arranged in the housing 200, the air supply fan 600 is arranged in the air supply duct 200a, and the exhaust fan 700 is arranged in the exhaust duct 200b. Thus, the exhaust fan 700 can be flexibly arranged under the premise of meeting the ventilation requirements.

[0125] In some embodiments, the refrigerant in the compressor 300 includes carbon dioxide. Carbon dioxide has a small flow loss, good heat transfer effect, and is safe and non-toxic. However, the critical temperature of carbon dioxide is low and the refrigeration efficiency is low. Therefore, the operating pressure of the air conditioner 1000 is large, and the electric control component 100 has a higher requirement for heat dissipation. The air conditioner 1000 of the present invention is provided with the above-mentioned electric control component 100, which can improve the heat dissipation efficiency of the electric control component 100 and improve the working stability of the air conditioner 1000.

[0126] It is worth noting that the electric control component 100 according to the embodiment of the present invention is not only used in the air conditioner 1000, but can also be used in other devices requiring electric control, which will not be elaborated here.

[0127] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0128] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0129] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0130] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0131] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0132] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An electronic control component, characterized in that: include: A box body assembly, wherein the box body assembly has a chamber and an air duct, the air duct is arranged outside the chamber and conducts heat transfer with the wall surface of the chamber, and the air outlet section of the air duct extends upward; A circuit assembly, the circuit assembly comprising a circuit board and a heating device disposed above the circuit board, the heating device being located in the chamber and comprising a first heating device; The heat sink comprises a heat absorbing part and a heat dissipating part, at least a part of the heat absorbing part is arranged in the chamber to transfer heat with the first heating device, and the heat dissipating part transfers heat with the air outlet section of the air duct.

2. The electronic control component according to claim 1, characterized in that: The heating device further includes a second heating device, and the air duct includes an enclosure section enclosing the second heating device.

3. The electronic control component according to claim 2, characterized in that: The enclosed section includes an upstream section, a middle section and a downstream section which are connected in sequence along the airflow direction, the middle section is located above the second heating device, the upstream section and the downstream section are located on both sides of the second heating device, and along the airflow direction, the upstream section extends upward and the downstream section extends downward.

4. The electronic control component according to claim 3, characterized in that: The box assembly includes a partition wall between the chamber and the air duct, wherein a thermal conductivity of a portion of the partition wall corresponding to the upstream section is greater than a thermal conductivity of a portion of the partition wall corresponding to the downstream section; And / or, the thermal conductivity of a portion of the partition wall corresponding to the air outlet section is greater than the thermal conductivity of a portion of the partition wall corresponding to the downstream section.

5. The electronic control component according to claim 3, characterized in that: The vertical heights of the upstream section and the downstream section are both greater than 1 / 2 of the vertical height of the second heating device.

6. The electronic control component according to claim 2, characterized in that: The second heating device includes a first inductive device and a first capacitive device. The number of the enclosed segments is multiple and includes a first enclosed segment and a second enclosed segment. The first enclosed segment encloses the first inductive device, and the second enclosed segment encloses the first capacitive device.

7. The electronic control component according to claim 6, characterized in that: Along the airflow direction, the first enclosed section is located upstream of the second enclosed section.

8. The electronic control component according to claim 6, characterized in that: The first inductive component, the first capacitive component and the first heating component are arranged in sequence along a first direction, and the air outlet section is located between the first capacitive component and the first heating component.

9. The electronic control component according to claim 1, characterized in that: The air duct has a plurality of bends, and the bends are rounded transitions.

10. The electronic control component according to any one of claims 1 to 9, characterized in that: The box body assembly includes an electric control box and an air duct shell, the chamber is defined inside the electric control box, the electric control box includes an inner shell and an outer shell covering the inner shell, the inner shell is a flame retardant insulating shell, and the outer shell is a fireproof heat conductive shell, wherein the air duct shell is spaced apart outside the outer shell, and the air duct shell and the outer shell define the air duct, or the air duct shell is attached to the outside of the outer shell, and the air duct shell alone defines the air duct.

11. The electronic control component according to any one of claims 1 to 9, characterized in that: The heat dissipation part is a vertically placed metal piece; and / or, a heat-conducting medium is provided between the heat dissipation part and the box body assembly.

12. The electronic control component according to any one of claims 1 to 9, characterized in that: The heat absorption part includes a heat conducting plate arranged on the first heating element and a heat conducting pipe passing through the heat conducting plate. The heat conducting pipe is a heat pipe or a refrigerant pipe, and part of the heat conducting pipe is located outside the box body assembly to dissipate heat outside the box body assembly.

13. The electronic control component according to any one of claims 1 to 9, characterized in that: The heat dissipation portion is disposed in the chamber; and / or the chamber is a closed chamber.

14. The electronic control component according to any one of claims 6 to 8, characterized in that: Also includes: a temperature detection unit configured to detect the temperature of at least one of the heat sink and the first capacitive device, and to detect the temperature of the first inductive device; The control unit is configured to control the heat generation of at least one of the heat sink and the first capacitive device according to at least one of the temperature of the heat sink and the temperature of the first capacitive device and the temperature of the first inductive device to reduce the temperature of the first inductive device.

15. The electric control component according to claim 14, characterized in that: The control unit is also configured to control heating of at least one of the heat sink and the first capacitive device when the temperature of the heat sink is lower than a first preset temperature threshold, the temperature of the first inductive device is higher than the first preset temperature threshold, and the temperature of the first capacitive device is lower than the first preset temperature threshold.

16. The electric control component according to claim 15, characterized in that: The temperature rise of the radiator is less than the difference between the first preset temperature threshold and the temperature of the radiator, the temperature rise of the first capacitive device is less than the difference between the first preset temperature threshold and the temperature of the first capacitive device, and the temperature rise of the first capacitive device is less than the difference between the limit temperature of the first capacitive device and the temperature of the first capacitive device.

17. An air conditioner, characterized in that: It includes a casing, a compressor, a first heat exchanger, a second heat exchanger, an air supply fan, an exhaust fan and an electronic control component according to any one of claims 1 to 16, wherein the casing has an air supply duct and an exhaust duct isolated from each other, the first heat exchanger is arranged in the air supply duct, the second heat exchanger is arranged in the exhaust duct, the first heat exchanger and the second heat exchanger are both connected to the compressor and serve as a condenser and an evaporator respectively, the inlet of the air supply fan is connected to the air supply duct and the outlet of the air supply fan is connected to the indoor side, the inlet of the exhaust fan is connected to the exhaust duct and the outlet of the exhaust fan is connected to the outdoor side.

18. The air conditioner according to claim 17, characterized in that: The electric control component is arranged on the air inlet path of the exhaust fan.

19. The air conditioner according to claim 17, characterized in that: The refrigerant in the compressor includes carbon dioxide.

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