Electric control component and air conditioner with same

Abstract

The electric control component comprises an electric control box, a circuit board and a heating device, the electric control box is a closed box body, the circuit board is contained in the electric control box, the heating device comprises an inductive device arranged on the circuit board, and the inductive device is contained in the electric control box. According to the electric control component provided by the embodiment of the invention, the electric control box is set to be the closed box body, so that pollutants such as oil stains and dust can be prevented from entering the electric control box, and the circuit board and the inductive device are accommodated in the electric control box, so that the oil stains can be prevented from contacting the inductive device to cause adverse effects on the inductive device; therefore, the working reliability of the inductive device can be improved, the working stability of the electric control component is improved, and the service life of the electric control component is prolonged.

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] In the air conditioner in the related art, the inductive device of the electronic control component is usually arranged outside the electronic control box. When the air conditioner is used in an environment such as a kitchen or a factory, the working environment of the air conditioner is complex and there are many pollutants in the air. The pollutants in the air will contact the inductive device and have an adverse effect on the inductive device, thereby reducing the working reliability of the electronic control component. 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 proposes an electric control component, which is a closed component, and the inductive device is arranged in the closed electric control box, so as to improve the influence of pollutants in the air on the inductive device, improve the working stability of the electric control component, and extend the service life of the electric control component.

[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 electric control component includes: an electric control box, which is a closed box body; a circuit board, which is accommodated in the electric control box; and a heating device, which includes an inductive device arranged on the circuit board, and the inductive device is accommodated in the electric control box.

[0006] According to the electric control component of the embodiment of the present invention, by configuring the electric control box as a closed box body, it is possible to prevent pollutants such as oil and dust from entering the electric control box, and by storing the circuit board and the inductive device inside the electric control box, it is possible to prevent the adverse effects caused by oil contacting the circuit board and the inductive device, thereby improving the working stability of the electric control component and extending the service life of the electric control component.

[0007] In some embodiments, the inductive device includes a first inductive device, an end of the first inductive device away from the circuit board is a distal end of the first inductive device, and a distance between the distal end of the first inductive device and the electric control box is 5 mm-10 mm.

[0008] In some embodiments, the inductive device includes a first inductive device, an end of the first inductive device away from the circuit board is a distal end of the first inductive device, the electrical control box includes an inner shell and an outer shell covering the inner shell, the inner shell is an insulating shell and is formed with a first opening, the first opening is opposite to the distal end of the first inductive device, and the outer shell is a metal shell and blocks and closes the first opening.

[0009] In some embodiments, the inductive device includes a first inductive device, and the electrical control box includes a first box wall, the first box wall is located on a side of the first inductive device away from the circuit board, a portion of the first box wall protrudes in a direction away from the circuit board to form a protrusion, and an avoidance cavity is formed on the inner side of the protrusion, and at least a portion of the first inductive device is accommodated in the avoidance cavity.

[0010] Further, in the cross section of the circuit board, the cross-sectional width of the protrusion gradually decreases along the direction away from the circuit board.

[0011] Optionally, the cross-sectional profile of the protrusion is trapezoidal or arc-shaped.

[0012] In some embodiments, the electronic control component also includes an air duct cover arranged outside the electronic control box, and a heat dissipation air duct is formed between the air duct cover and the first box wall, and the air flow direction of the heat dissipation air duct is from one side of the cross-sectional width of the protrusion to the other side of the cross-sectional width.

[0013] In some embodiments, there are multiple first inductive devices, and the first box wall has multiple protrusions, and each protrusion corresponds to one first inductive device.

[0014] In some embodiments, the heating device further includes a capacitive device disposed on the circuit board, and the capacitive device is housed in the electric control box.

[0015] In some embodiments, the capacitive device includes a first capacitive device, an end of the first capacitive device away from the circuit board is a distal end of the first capacitive device, and a distance between the distal end of the first capacitive device and the electric control box is 5 mm-10 mm.

[0016] In some embodiments, the capacitive device includes a first capacitive device, an end of the first capacitive device away from the circuit board is the distal end of the first capacitive device, the electrical control box includes an inner shell and an outer shell covering the inner shell, the inner shell is an insulating shell and is formed with a second opening, the second opening is opposite to the distal end of the first capacitive device, and the outer shell is a metal shell and blocks and closes the second opening.

[0017] In some embodiments, the inductive device includes a first inductive device, and the capacitive device includes a first capacitive device. The first inductive device and the first capacitive device are located on the same side of the circuit board in the thickness direction, and the height of the first inductive device in the thickness direction of the circuit board is higher than the height of the first capacitive device. The electrical control box includes a first box wall, and the first box wall is located on a side of the first inductive device away from the circuit board. The distance between a first part of the first box wall corresponding to the first inductive device and the circuit board is greater than the distance between a second part of the first box wall corresponding to the first capacitive device and the circuit board.

[0018] In some embodiments, the electrical control box includes an inner shell and an outer shell covering the inner shell, the inner shell having a through discharge hole, the inner end of the discharge hole being connected to the interior of the electrical control box, the outer shell covering the outer end of the discharge hole, and a gap connected to the outer end of the discharge hole and a slit connecting the gap to the outside of the electrical control box are formed between the outer shell and the inner shell, and the gap and the flow width of the gap are both smaller than the equivalent diameter of the inner end of the discharge hole.

[0019] In some embodiments, there are multiple discharge holes; and / or, the flow area of ​​the discharge hole gradually decreases along the direction from the inner end to the outer end.

[0020] In some embodiments, the electric control component further includes an air duct cover disposed outside the electric control box, a heat dissipation air duct is formed between the air duct cover and the electric control box, and in the air flow direction of the heat dissipation air duct, the exhaust hole is located downstream of the capacitive device.

[0021] In some embodiments, the electronic control component also includes: an air duct cover, which is arranged outside the electronic control box and located on the side of the inductive device away from the circuit board, a heat dissipation air duct is formed between the air duct cover and the electronic control box, and the air duct cover itself or together with the electronic control box defines an air inlet of the heat dissipation air duct, and the air duct cover itself or together with the electronic control box defines an air outlet of the heat dissipation air duct.

[0022] Furthermore, the distance between the air duct cover and the electric control box is the height of the heat dissipation air duct, and the height of the heat dissipation air duct at least at a position corresponding to the inductive device is 10 mm to 15 mm.

[0023] In some embodiments, the electrical control box includes a first box wall, which is located on a side of the inductive device away from the circuit board, and the heat dissipation duct is formed between the first box wall and the duct cover. The first box wall is a concave-convex shape, and the duct cover is also constructed with a matching concave-convex shape corresponding to the concave-convex position of the first box wall, so that the height of the heat dissipation duct at the concave-convex position corresponding to the first box wall is fixed.

[0024] In some embodiments, a capacitive device is also provided on the circuit board. The capacitive device is also housed in the electrical control box and is located on the same side of the circuit board as the inductive device. In the airflow direction of the heat dissipation duct, at least one capacitive device and at least one inductive device are arranged in parallel.

[0025] Further, the inductive device includes a first inductive device, the capacitive device includes a first capacitive device, the height of the first inductive device in the thickness direction of the circuit board is higher than the height of the first capacitive device, the air inlet includes a first inlet portion located upstream of the first inductive device and a second inlet portion located upstream of the first capacitive device, and the distance between the first inlet portion and the circuit board is greater than the distance between the second inlet portion and the circuit board.

[0026] Furthermore, the first inductive device and the first capacitive device are arranged at intervals along the first direction, the air outlet and the air inlet are located on both sides of the first inductive device in the second direction, and the air inlet is constructed as a long strip opening whose length direction extends along the first direction and whose width direction extends along the second direction, and the length of the air inlet is more than 10 times the width of the air inlet.

[0027] In some embodiments, a power device is also provided on the circuit board, and the electronic control component also includes a heat sink, which cooperates with at least one of the power devices for heat transfer, and at least part of the heat sink is located outside the electronic control box. In the airflow direction of the heat dissipation duct, the heat sink is located downstream of the inductive device.

[0028] The air conditioner according to the second aspect of the present invention comprises 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 the first aspect of the present invention, 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 an evaporator and a condenser 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, and the electronic control component is arranged on the air inlet path of the exhaust fan.

[0029] According to the air conditioner of the embodiment of the present invention, the working reliability of the air conditioner can be improved by setting the electronic control component of the first aspect. By setting the electronic control component on the air inlet path of the exhaust fan, the air supply fan can dissipate heat for the electronic control component while providing a flowing airflow to the second heat exchanger, and there is no need to set up an additional exhaust fan, which simplifies the structure of the air conditioner, reduces the volume and manufacturing cost of the air conditioner, and is conducive to the installation of the air conditioner.

[0030] In some embodiments, the electronic control component is disposed in the exhaust duct and along the air inlet path of the exhaust fan, the electronic control component is located upstream of the second heat exchanger, or the electronic control component is arranged in parallel with the second heat exchanger.

[0031] In some embodiments, the exhaust fan and the supply fan are both disposed in the housing.

[0032] In some embodiments, the refrigerant in the compressor includes carbon dioxide.

[0033] 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

[0034] Figure 1 is a schematic structural diagram of an electric control component according to Embodiment 1 of the present invention;

[0035] Figure 2 is a schematic structural diagram of an electric control component according to a second embodiment of the present invention;

[0036] Figure 3 is a schematic structural diagram of an electric control component according to Embodiment 3 of the present invention;

[0037] Figure 4 is based on Figure 1 A partial enlarged view of area A of the example shown;

[0038] Figure 5 is a three-dimensional appearance diagram of an electric control component according to the present invention;

[0039] Figure 6 is a three-dimensional appearance diagram of an air conditioner according to an embodiment of the present invention;

[0040] Figure 7 Schematic diagram of the coordination of the electric control component and the second heat exchanger in the air conditioner according to an embodiment of the present invention.

[0041] Reference numerals:

[0042] Air conditioner 1000;

[0043] Electronic control component 100;

[0044] Electric control box 1; inner shell 11; first opening 111; second opening 112; discharge hole 113; outer shell 12; gap 121; gap 122; first box wall 1a; protrusion b;

[0045] Circuit board 2;

[0046] Heating device 3; inductive device 31; first inductive device 310; capacitive device 32; first capacitive device 320;

[0047] Air duct cover 4;

[0048] Heat dissipation duct 50; air inlet 51; first inlet portion 511; second inlet portion 512; air outlet 52;

[0049] Power device 6; Radiator 7;

[0050] Housing 200; air supply duct 210; air exhaust duct 220; partition 230;

[0051] Compressor 300; first heat exchanger 400; second heat exchanger 500; air supply fan 600; exhaust fan 700. DETAILED DESCRIPTION

[0052] 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.

[0053] 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.

[0054] Reference below Figure 1 An electric control component 100 according to an embodiment of the first aspect of the present invention is described.

[0055] The electric control component 100 according to the embodiment of the present invention comprises: an electric control box 1, a circuit board 2 and a heating device 3. The electric control box 1 is a closed box body. The circuit board 2 is accommodated in the electric control box 1. The heating device 3 comprises an inductive device 31 arranged on the circuit board 2. The inductive device 31 is accommodated in the electric control box 1.

[0056] It is worth noting that the application scenario of the electronic control component 100 of the present invention is not limited. For example, the electronic control component 100 can be used to control the actions of components such as compressors, solenoid valves, and fans.

[0057] For example, when the working environment of the electric control component 100 is relatively complex, such as when there are pollutants such as oil, dust, etc. in the air of the working environment. In the embodiment of the present invention, by setting the electric control box 1 as a closed box body, pollutants such as oil, dust, etc. can be prevented from entering the electric control box 1, and the circuit board 2 and the inductive device 31 are stored inside the electric control box 1, which can prevent oil from contacting the inductive device 31 and causing adverse effects on the inductive device 31, thereby improving the working reliability of the inductive device 31 and the working stability of the electric control component 100, thereby extending the service life of the electric control component 100.

[0058] It is also worth noting that the "closed" mentioned in the present invention should be understood in a broad sense. The electric control box 1 does not have an air flow channel (such as a heat dissipation hole) for heat dissipation, which can be understood as a closed state.

[0059] According to the electric control component 100 of the embodiment of the present invention, by setting the electric control box 1 as a closed box body, it is possible to prevent pollutants such as oil and dust from entering the electric control box 1, and by storing the circuit board 2 and the inductive device 31 inside the electric control box 1, it is possible to prevent oil from contacting the inductive device 31 and causing an adverse effect on the inductive device 31, thereby improving the working reliability of the inductive device 31 and improving the working stability of the electric control component 100, thereby extending the service life of the electric control component 100.

[0060] It is worth noting that the electric control component 100 of the present invention sets the electric control box 1 as a closed box body, and the circuit board 2 and the inductive device 31 are both set in the electric control box 1. When the electric control component 100 is working, the inductive device 31 will generate heat. Since the electric control box 1 of the embodiment of the present invention is not provided with a through hole for heat dissipation, some embodiments of the present invention also perform heat dissipation design on the electric control component 100 to improve the heat dissipation capacity of the electric control component 100, and further improve the working reliability of the electric control component 100.

[0061] In some embodiments of the present invention, Figure 1 As shown, the inductive device 31 includes a first inductive device 310, and the end of the first inductive device 310 away from the circuit board 2 is the distal end of the first inductive device 310. The distance L1 between the distal end of the first inductive device 310 and the electric control box 1 is 5mm-10mm, for example, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc. In general, the distal end of the first inductive device 310 is the position where the first inductive device 310 is closest to the electric control box 1. When the distance between the distal end of the first inductive device 310 and the electric control box 1 is too large, the heat radiation heat dissipation efficiency of the first inductive device 310 to the electric control box 1 is low, and the heat dissipation capacity of the first inductive device 310 is insufficient; and when the distance between the distal end of the first inductive device 310 and the electric control box 1 is too small, the electrical safety distance is not met.

[0062] By setting the distance between the far end of the first inductive device 310 and the electric control box 1 to the above-mentioned distance value, the distance between the far end of the first inductive device 310 and the electric control box 1 is made smaller, which is beneficial to the heat radiation heat dissipation of the first inductive device 310 to the electric control box 1, thereby improving the heat dissipation effect of the first inductive device 310; and by setting the distance between the far end of the first inductive device 310 and the electric control box 1 to the above-mentioned distance value, the safety distance requirement can also be met.

[0063] The inductive device 31 may be one or more inductive devices 31, at least one of which is a first inductive device 310. The first inductive device 310 satisfies that the distance between the distal end of the first inductive device 310 and the electric control box 1 is the above-mentioned distance value, and the distance between other inductive devices 31 and the electric control box 1 may satisfy the above-mentioned distance value, or the distance between other inductive devices 31 and the electric control box 1 may not be the above-mentioned distance value. For example, in some examples, the first inductive device 310 may be connected to a strong current, such as a PFC inductor (where PFC is the abbreviation of Power Factor Correction) or a common mode inductor, etc. The first inductive device 310 generates high heat, while the other inductive devices 31 generate relatively low heat. Therefore, the embodiment of the present application gives priority to designing the heat dissipation of the first inductive device 310. By setting the distance between the distal end of the first inductive device and the electric control box 1 to the above-mentioned distance value, the distance between the first inductive device 310 and the electric control box 1 is small, which is conducive to the heat radiation heat dissipation of the inductive device 31 to the electric control box 1. The inductive device 31 which generates relatively less heat may or may not be within this spacing.

[0064] In some embodiments of the present invention, Figure 2 and Figure 3 As shown, the inductive device 31 includes a first inductive device 310, and the end of the first inductive device 310 away from the circuit board 2 is the distal end of the first inductive device 310. The electric control box 1 includes an inner shell 11 and an outer shell 12 covering the inner shell 11. The inner shell 11 is an insulating shell and is formed with a first opening 111. The first opening 111 is opposite to the distal end of the first inductive device 310. The outer shell 12 is a metal shell and blocks and closes the first opening 111. Therefore, in this embodiment, the electric control box 1 is set to at least a double-layer structure. The metal shell can ensure the structural reliability and fire resistance of the electric control box 1. The insulating shell can be used to play the role of insulation and improve the safety of the electric control component 100. Optionally, the inner shell 11 can be a plastic part. In addition to having an insulating effect, it also has a flame retardant effect, which is conducive to improving the flame retardant and fire resistance of the electric control box 1. By setting the electric control box 1 to a double-layer structure, with the inner shell 11 being a plastic shell and the outer shell 12 being a metal shell, the manufacturing cost of the inner shell 11 is relatively low, which can improve the working reliability of the electric control box 1 and reduce the manufacturing cost of the electric control box 1.

[0065] Generally, the distal end of the first inductive device 310 is the position of the first inductive device 310 closest to the electric control box 1. It can be understood that the outer shell 12 of the present invention is a metal shell with strong thermal conductivity, the inner shell 11 is an insulating shell with relatively weak thermal conductivity relative to the outer shell 12, and the outer shell 12 is located outside the inner shell 11, and the outer shell 12 can directly contact the external space. Therefore, by providing the first opening 111 at the position where the inner shell 11 is opposite to the distal end of the first inductive device 310, the first inductive device 310 directly radiates heat to the outer shell 12 through the first opening 111, which is conducive to the heat radiation heat dissipation of the first inductive device 310 to the electric control box 1, and improves the heat radiation heat dissipation efficiency of the first inductive device 310.

[0066] The inductive device 31 may be one or more inductive devices 31, at least one of which is a first inductive device 310, and a first opening 111 is provided at the inner shell 11 opposite to the distal end of the first inductive device 310, and openings may or may not be provided at the inner shell 11 opposite to other inductive devices 31. For example, in some examples, the first inductive device 310 may be connected to a strong current, such as a PFC inductor (where PFC is the abbreviation of Power Factor Correction) or a common mode inductor, etc. The first inductive device 310 generates high heat, while the other inductive devices 31 generate relatively low heat, so the embodiment of the present application gives priority to designing the heat dissipation of the first inductive device 310. By providing the first opening 111 at the inner shell 11 opposite to the distal end of the first inductive device 310, the heat radiation heat dissipation efficiency of the first inductive device 310 and the metal shell is high, which is conducive to the heat radiation heat dissipation of the first inductive device 310 to the electric control box 1.

[0067] When there are multiple first inductive devices 310, optionally, at least two first inductive devices 310 correspond to the same first opening 111, that is, a first opening 111 is provided on the inner shell 11, and the range of the first opening 111 is relatively large, which can be opposite to the far ends of at least two first inductive devices 310; or, also optionally, each first inductive device 310 corresponds to a different first opening 111, and the first inductive devices 310 correspond to the first openings 111 one by one.

[0068] In some specific embodiments of the present invention, the outer shell 12 is a metal shell, and the inner shell 11 is a plastic shell. The metal shell can ensure the structural reliability and fire resistance of the electric control box 1, and the insulating shell can be used to play the role of insulation, etc. The plastic shell has not only the insulation function, but also the flame retardant function, which is beneficial to improve the flame retardant and fire resistance of the electric control box 1. In addition, the manufacturing cost of the electric control box 1 can also be reduced.

[0069] In some embodiments of the present invention, Figure 1 and Figure 2As shown, the inductive device 31 includes a first inductive device 310, and the electric control box 1 includes a first box wall 1a, the first box wall 1a is located on the side of the first inductive device 310 away from the circuit board 2, a part of the first box wall 1a protrudes in the direction away from the circuit board 2 to form a protrusion b, and an avoidance cavity is formed on the inner side of the protrusion b, that is, an avoidance cavity is formed on the side toward the inside of the electric control box 1, and at least a part of the first inductive device 310 is accommodated in the avoidance cavity.

[0070] By providing the protrusion b to form an avoidance cavity to accommodate the inductive device 31, the first aspect can increase the heat radiation area of ​​the first inductive device 310 and improve the heat dissipation efficiency. It can be understood that the first inductive device 310 is at least partially accommodated in the avoidance cavity. In addition to heat radiation with the side wall of the electric control box 1 away from the circuit board 2, the first inductive device 310 also radiates heat with the wall located on the side of the first inductive device 310. Compared with heat radiation only with the side wall away from the circuit board 2, the first box wall 1a of the electric control box 1 of the embodiment of the present invention can increase the heat radiation area of ​​the first inductive device 310 by providing the protrusion b, which is beneficial to the heat radiation heat dissipation of the first inductive device 310 to the electric control box 1, and improves the heat radiation heat dissipation efficiency of the first inductive device 310.

[0071] The protrusion b is provided to form an avoidance cavity to accommodate the inductive device 31 . On the second aspect, the protrusion b can cover the heat dissipation of the first inductive device 310 , thereby reducing the adverse thermal impact of the heat flowing to other locations on other components on the circuit board 2 .

[0072] The avoidance cavity is formed by setting the protruding portion b to accommodate the inductive device 31. In the third aspect, the avoidance cavity avoids the first inductive device 310, improves the interference between the first inductive device 310 and the electric control box 1, and improves the working stability of the first inductive device 310. In addition, only a part of the electric control box 1 needs to be protruded in the direction away from the circuit board 2, and the electric control box 1 does not need to be raised as a whole to be away from the circuit board 2. The non-protruding part can save materials and reduce manufacturing costs. In addition, the non-protruding part of the electric control box 1 is closer to other components on the circuit board 2, which is conducive to the heat radiation and heat dissipation of other components.

[0073] There may be one or more inductive devices 31 , at least one of which is a first inductive device 310 , which is accommodated in the avoidance cavity, and the remaining inductive devices 31 may be arranged corresponding to the flat portion of the electric control box 1 .

[0074] For example, in some examples, the first inductive device 310 may be connected to a strong current, such as a PFC inductor or a common mode inductor, etc. The first inductive device 310 generates high heat and has a high height, while other inductive devices 31 are relatively low in height and generate relatively low heat. Therefore, a protrusion b is provided at the first box wall 1a opposite to the first inductive device 310. The protrusion b forms an avoidance cavity to avoid the first inductive device 310, which is conducive to the heat radiation heat dissipation of the first inductive device 310 to the electric control box 1, and can also cover the heat dissipation of the first inductive device 310 to avoid adverse thermal effects on other inductive devices 31, improve the interference between the first inductive device 310 and the electric control box 1, and improve the working stability of the first inductive device 310. The other inductive devices 31 with relatively low heights are arranged corresponding to the non-protruding parts of the electric control box 1, which not only saves materials, but also facilitates the heat radiation heat dissipation of the inductive devices 31 with low heights.

[0075] When there are multiple first inductive devices 310, optionally, at least two first inductive devices 310 are housed in the same avoidance cavity; or, further optionally, each first inductive device 310 is housed in a different avoidance cavity, and the first inductive devices 310 are arranged in a one-to-one correspondence with the protrusions b.

[0076] In some embodiments of the present invention, in the cross section of the circuit board 2, the cross-sectional width of the protrusion b remains unchanged in the direction away from the circuit board 2, and the protrusion b is constructed as a rectangle, and the protrusion b is formed by mutually perpendicular sides, which is convenient for design and processing.

[0077] Alternatively, in other embodiments of the present invention, Figure 1 and Figure 2 As shown, on the cross section of the circuit board 2, the cross-sectional width of the protrusion b gradually decreases in the direction away from the circuit board 2. Compared with setting the cross-sectional width of the protrusion b to remain unchanged in the direction away from the circuit board 2, or expanding in the direction away from the circuit board 2, the shape of the protrusion b in the embodiment of the present invention can reduce the external space occupied by the electric control box 1 and save manufacturing materials.

[0078] In addition, the cross-sectional width of the protrusion b gradually decreases in the direction away from the circuit board 2, and the avoidance cavity formed by the protrusion b is funnel-shaped, which shrinks in the direction away from the circuit board 2, which is beneficial to concentrate the heat dissipation of the first inductive device 310, and further reduce the heat flow to other locations to cause adverse thermal effects on other components on the circuit board 2.

[0079] For some annular first inductive devices 310, such as Figure 1 and Figure 2As shown, the placement orientation of the first inductive device 310 can be set to roughly match the shape of the protrusion b to maximize the use of the space in the avoidance cavity and reduce the distance between each position of the protrusion b and the first inductive device 310, thereby improving the thermal radiation heat dissipation efficiency of the first inductive device 310.

[0080] Furthermore, when used in the embodiment having a "heat dissipation duct 50" described later, the airflow of the heat dissipation duct 50 can be set to flow in a direction from one side of the width of the protrusion b to the other side of the width. In this way, since the width gradually decreases, it is conducive to smooth flow of the airflow, reducing wind resistance, improving ventilation efficiency, and facilitating heat dissipation.

[0081] Alternatively, if Figure 1 As shown, the cross-sectional profile of the protrusion b is a trapezoid, the spacing between the waists of the trapezoid gradually decreases in the direction away from the circuit board 2, and the side away from the circuit board 2 is connected to the two waists and parallel to the bottom of the trapezoid. Each side of the trapezoid is a straight line, which facilitates the manufacturing and processing of the protrusion b and improves the production efficiency of the electric control box 1.

[0082] Alternatively, if Figure 2 As shown, the cross-sectional profile of the protrusion b is an arc. When the cross-sectional shape of the first inductive device 310 is a circular ring, the first inductive device 310 is disposed in the avoidance cavity formed by the protrusion b having an arc-shaped cross-sectional profile, which can improve the shape matching degree between the first inductive device 310 and the protrusion b, and the spacing between the protrusion b and the first inductive device 310 is small and uniform, thereby improving the heat radiation heat dissipation efficiency of the first inductive device 310.

[0083] Alternatively, the cross-sectional profile of the protrusion b is a stage-shaped structure formed by an arc-shaped waist, the waist of the stage-shaped structure is an arc-shaped structure, and the spacing between the waists gradually decreases in the direction away from the circuit board 2, and the edge away from the circuit board 2 is connected to the two waists and is parallel to the bottom of the protrusion b. This can not only improve the shape matching degree between the first inductive device 310 and the protrusion b, but also facilitate the manufacturing and processing of the protrusion b.

[0084] Alternatively, the cross-sectional profile of the protrusion b may also be a pyramid-shaped, stepped shape, etc., which will not be elaborated here.

[0085] In some embodiments of the present invention, Figure 1 As shown, the cross-sectional profile of the protrusion b is a trapezoid, and the two sides of the trapezoid gradually approach each other in the direction away from the circuit board 2 to form the upper base of the trapezoid, and the angles between the upper base and the two sides of the trapezoid are both 135°±5°, that is, the angles between the upper base and the two sides of the trapezoid are both in the range of 130°-140°.

[0086] Optionally, the angle between the upper base and the waist of the trapezoid may be 130°, 132°, 135°, 136°, 139°, 140°, etc.

[0087] Optionally, the angles between the upper base and the two sides of the trapezoid are equal, and the cross-sectional profile of the protrusion b is an isosceles trapezoid; or, also optionally, the angles between the upper base and the two sides of the trapezoid are not equal, which all fall within the protection scope of the present invention.

[0088] Optionally, the angles between the upper base and the two sides of the trapezoid are both 135°.

[0089] By designing the cross-sectional profile of the protrusion b to be a trapezoid, and the angles between the upper base and the two waists of the trapezoid are both 135°±5°, on the one hand, it is convenient for the manufacturing and processing of the protrusion b, and the upper base and waist of the trapezoid can be formed by stamping the profile, which is convenient for the stamping and forming of the protrusion b during production, further improving production efficiency and saving manufacturing costs; on the other hand, it is beneficial to concentrate the heat dissipation of the first inductive device 310; on the third hand, when used in the embodiment with the "heat dissipation duct 50" described later, it is beneficial to reduce wind resistance and ensure smooth airflow.

[0090] It is worth noting that the electric control box 1 of the embodiment of the present invention may include one or more features of the above-mentioned embodiments. For example, the electric control box 1 includes an inner shell 11 and an outer shell 12 covering the inner shell 11. The side of the electric control box 1 away from the circuit board 2 is the first box wall 1a, and the first box wall 1a is also a double-layer structure of the inner shell 11 and the outer shell 12. The first box wall 1a protrudes in the direction away from the circuit board 2 to form a protrusion b, and the inner side of the protrusion b forms an avoidance cavity, and the first inductive device 310 is accommodated in the avoidance cavity. The distance between the distal end of the first inductive device 310 and the outer shell 12 of the protrusion b is 5 mm, and the inner shell 11 of the protrusion b is provided with a first opening 111, and the outer shell 12 blocks and closes the first opening 111. The distance between the far end of the first inductive device 310 and the electric control box 1 is small, which is conducive to the heat radiation heat dissipation of the first inductive device 310 to the electric control box 1, and the first inductive device 310 can also directly heat the outer shell 12 with good thermal conductivity. The first inductive device 310 is also located in the avoidance cavity, which comprehensively improves the heat radiation heat dissipation efficiency of the first inductive device 310.

[0091] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the electric control component 100 further includes an air duct cover 4 disposed outside the electric control box 1, and a heat dissipation air duct 50 is formed between the air duct cover 4 and the first box wall 1a. The air flow direction of the heat dissipation air duct 50 is from one side of the cross-sectional width of the protrusion b to the other side of the cross-sectional width, as shown in FIG. Figure 1 As shown, the arrow direction is the air flow direction.

[0092] By providing the air duct cover 4, a heat dissipation air duct 50 is formed between the air duct cover 4 and the first box wall 1a, and the heat dissipation airflow flows through the heat dissipation air duct 50 to exchange heat with the first box wall 1a, and the heat dissipation airflow takes away the heat radiated from the inductive element to the electric control box 1, thereby achieving heat dissipation of the heating element 3. In addition, by providing the air duct cover 4 to dissipate heat for the electric control box 1, it is not necessary to open an airflow channel for heat dissipation on the electric control box 1, which can prevent pollutants such as oil and dust from entering the electric control box 1, thereby improving the working stability of the electric control component 100.

[0093] The airflow in the heat dissipation duct 50 flows from one side of the cross-sectional width of the protrusion b to the other side of the cross-sectional width. Figure 1 and Figure 2 As shown, the arrow direction is the airflow direction. Since the cross-sectional width gradually decreases in the direction away from the circuit board 2, the airflow rises along one side of the cross-sectional width of the protrusion b in the direction away from the circuit board 2, and in the process of flowing to the other side of the cross-sectional width of the protrusion b, the airflow rises gently along the protrusion b. Compared with setting the cross-sectional width of the protrusion b to remain unchanged in the direction away from the circuit board 2, or setting the cross-sectional width of the protrusion b to expand in the direction away from the circuit board 2, the cross-sectional width shape of the protrusion b in the embodiment of the present invention can reduce wind resistance, improve airflow, thereby improving ventilation efficiency, and improving the heat dissipation efficiency of the electric control component 100.

[0094] In some specific embodiments of the present invention, the air duct cover 4 is a plastic part, which not only forms the heat dissipation air duct 50, but also serves as insulation and flame retardant, improves the safety of the electric control component 100, and reduces the cost. However, the present application is not limited thereto, for example, in other embodiments of the present application, the air duct cover 4 can also be set as a metal cover.

[0095] In some embodiments of the present invention, there are multiple first inductive devices 310, and the first box wall 1a has multiple protrusions b, each of which corresponds to a first inductive device 310, and each first inductive device 310 is stored in a corresponding avoidance cavity. Each first inductive device 310 has a large radiable area, which improves the heat radiation and heat dissipation efficiency of each first inductive device 310, and each protrusion b covers the heat dissipation of the first inductive device 310, reduces the mutual heat crosstalk between the multiple first inductive devices 310, and reduces the adverse heat effects between them.

[0096] In some embodiments of the present invention, Figure 2As shown, the heating device 3 also includes a capacitive device 32 disposed on the circuit board 2, and the capacitive device 32 is accommodated in the electric control box 1. The electric control box 1 of the present invention is configured as a closed box body, which can prevent pollutants such as oil, dust, etc. from entering the electric control box 1, and can prevent oil from contacting the capacitive device 32 and causing adverse effects on the capacitive device 32, thereby improving the working reliability of the capacitive device 32. Similarly, the capacitive device 32 will generate heat when working, and because the electric control box 1 is configured as a closed shell, the electric control box 1 is not provided with a through hole for heat dissipation, so some embodiments of the present invention also perform heat dissipation design on the electric control component 100 to improve the heat dissipation capacity of the capacitive device 32 in the electric control component 100, and further improve the working reliability of the electric control component 100.

[0097] In some embodiments of the present invention, Figure 2 As shown, the capacitive device 32 includes a first capacitive device 320, and the end of the first capacitive device 320 away from the circuit board 2 is the distal end of the first capacitive device 320. The distance L2 between the distal end of the first capacitive device 320 and the electric control box 1 is 5mm-10mm, for example, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc. In general, the distal end of the first capacitive device 320 is the position of the first capacitive device 320 closest to the electric control box 1. When the distance between the distal end of the first capacitive device 320 and the electric control box 1 is too large, the heat radiation heat dissipation efficiency of the first capacitive device 320 to the electric control box 1 is low, and the heat dissipation capacity of the first capacitive device 320 is insufficient; and when the distance between the distal end of the first capacitive device 320 and the electric control box 1 is too small, the electrical safety distance is not met.

[0098] By setting the distance between the distal end of the first capacitive device 320 and the electric control box 1 to the above-mentioned distance value, the distance between the distal end of the first capacitive device 320 and the electric control box 1 is made smaller, which is beneficial to the heat radiation heat dissipation of the first capacitive device 320 to the electric control box 1, thereby improving the heat dissipation effect of the first capacitive device 320; and by setting the distance between the distal end of the first capacitive device 320 and the electric control box 1 to the above-mentioned distance value, the requirement of electrical safety distance can also be met.

[0099] There may be one capacitive device 32, or there may be multiple capacitive devices 32, at least one of which is a first capacitive device 320. The first capacitive device 320 satisfies that the distance between the distal end of the first capacitive device 320 and the electric control box 1 is the above-mentioned distance value, and the distance between other capacitive devices 32 and the electric control box 1 may meet the above-mentioned distance value, or the distance between other capacitive devices 32 and the electric control box 1 may not be the above-mentioned distance value. For example, in some examples, the first capacitive device 320 is a high-voltage electrolytic capacitor with relatively large heat generation, and the first capacitive device 320 generates high heat, while the other capacitive devices 32 generate relatively small heat. By setting the distance between the distal end of the first capacitive device 320 and the electric control box 1 to the above-mentioned distance value, the distance between the first capacitive device 320 and the electric control box 1 is small, which is conducive to the heat radiation heat dissipation of the first capacitive device 320 to the electric control box 1. The capacitive device 32 with relatively small heat generation may be this distance or may not be this distance.

[0100] In some embodiments of the present invention, Figure 2 and Figure 3 As shown, the capacitive device 32 includes a first capacitive device 320, and the end of the first capacitive device 320 away from the circuit board 2 is the distal end of the first capacitive device 320. The electric control box 1 includes an inner shell 11 and an outer shell 12 covering the inner shell 11. The inner shell 11 is an insulating shell and is formed with a second opening 112. The second opening 112 is opposite to the distal end of the first capacitive device 320. The outer shell 12 is a metal shell and blocks and closes the second opening 112. Therefore, in this embodiment, the electric control box 1 is set to at least a double-layer structure. The metal shell can ensure the structural reliability and fire resistance of the electric control box 1. The insulating shell can be used to play the role of insulation and improve the safety of the electric control component 100. Optionally, the inner shell 11 can be a plastic part. In addition to having an insulating effect, it also has a flame retardant effect, which is conducive to improving the flame retardant and fire resistance of the electric control box 1. By setting the electric control box 1 to a double-layer structure, with the inner shell 11 being a plastic shell and the outer shell 12 being a metal shell, the manufacturing cost of the inner shell 11 is relatively low, which can improve the working reliability of the electric control box 1 and reduce the manufacturing cost of the electric control box 1.

[0101] Normally, the distal end of the first capacitive device 320 is the position of the first capacitive device 320 closest to the electric control box 1, and it can be understood that the outer shell 12 of the present invention is a metal shell with strong thermal conductivity, the inner shell 11 is an insulating shell with relatively weak thermal conductivity relative to the outer shell 12, and the outer shell 12 is located outside the inner shell 11, and the outer shell 12 can directly contact the external space. Therefore, by providing the second opening 112 at the position where the inner shell 11 is opposite to the distal end of the first capacitive device 320, the first capacitive device 320 directly radiates heat to the outer shell 12 through the second opening 112, which is beneficial to the heat radiation heat dissipation of the first capacitive device 320 to the electric control box 1, and improves the heat radiation heat dissipation efficiency of the first capacitive device 320.

[0102] The capacitive device 32 may be one or more capacitive devices 32, at least one of which is a first capacitive device 320, and a second opening 112 is provided at the inner shell 11 opposite to the distal end of the first capacitive device 320, and openings may or may not be provided at the inner shell 11 opposite to the other capacitive devices 32. For example, in some examples, the first capacitive device 320 is a high-voltage electrolytic capacitor with relatively large heat generation, and the first capacitive device 320 generates relatively high heat, while the other capacitive devices 32 generate relatively low heat. By providing the second opening 112 at the inner shell 11 opposite to the distal end of the first capacitive device 320, the heat radiation heat dissipation efficiency of the first capacitive device 320 and the metal shell is high, which is conducive to the heat radiation heat dissipation of the first capacitive device 320 to the electric control box 1.

[0103] When there are multiple first capacitive devices 320, optionally, at least two first capacitive devices 320 correspond to the same second opening 112, that is, the second opening 112 has a larger range and can be opposite to the far ends of at least two first capacitive devices 320; or, also optionally, each first capacitive device 320 corresponds to a different second opening 112, and the first capacitive devices 320 correspond to the second openings 112 one by one.

[0104] In some embodiments of the present invention, Figure 2 and Figure 3As shown, the inductive device 31 includes a first inductive device 310, and the end of the first inductive device 310 away from the circuit board 2 is the distal end of the first inductive device 310. The inner shell 11 is also formed with a first opening 111, and the first opening 111 is opposite to the distal end of the first inductive device 310. The outer shell 12 also blocks and closes the first opening 111. The heat radiation heat dissipation efficiency of the first inductive device 310 can be improved by setting the first opening 111. Optionally, the first opening 111 and the second opening 112 on the inner shell 11 can be spaced apart, the first inductive device 310 independently corresponds to the first opening 111, and the first capacitive device 320 independently corresponds to the second opening 112; or, further optionally, the first opening 111 and the second opening 112 on the inner shell 11 are connected to each other, and the distal ends of the first inductive device 310 and the distal ends of the first capacitive device 320 are opposite to the first opening 111 and the second opening 112.

[0105] In some embodiments of the present invention, Figure 2 As shown, the inductive device 31 includes a first inductive device 310, and the capacitive device 32 includes a first capacitive device 320. The first inductive device 310 and the first capacitive device 320 are located on the same side of the circuit board 2 in the thickness direction, and the height H1 of the first inductive device 310 is higher than the height H2 of the first capacitive device 320 in the thickness direction of the circuit board 2, that is, H1>H2. The electric control box 1 includes a first box wall 1a, and the first box wall 1a is located on a side of the first inductive device 310 away from the circuit board 2. The first box wall 1a corresponding to the first inductive device 310 is the first part of the first box wall 1a, and the first box wall 1a corresponding to the first capacitive device 320 is the second part of the first box wall 1a. The distance H3 between the first part of the first box wall 1a and the circuit board 2 is greater than the distance H4 between the second part of the first box wall 1a and the circuit board 2, that is, H3>H4.

[0106] The height of the first inductive device 310 is relatively high, and the distance between the first part and the circuit board 2 is relatively large, while the height of the first capacitive device 320 is relatively low, and the distance between the first part and the circuit board 2 is relatively small. In this way, under the condition that the first inductive device 310 and the first capacitive device 320 are installed, the distance between the side of the two away from the circuit board 2 and the electric control box 1 is small, which is conducive to the heat radiation and heat dissipation of the two. If the first box wall 1a is set as a plane structure, the distance between the first box wall 1a and the first inductive device 310 is small, and the distance between the first box wall 1a and the first capacitive device 320 is large, which is not only not conducive to the heat radiation and heat dissipation of the first capacitive device 320 to the electric control box 1, but also the heat emitted by the first inductive device 310 can be easily conducted to the first capacitive device 320 and the electric control box 1, further hindering the heat dissipation of the first capacitive device 320.

[0107] In some embodiments of the present invention, Figure 2 As shown, the first part of the first box wall 1a corresponding to the first inductive device 310 protrudes in a direction away from the circuit board 2 to form a protrusion b, and the protrusion b forms a avoidance cavity on the side facing the inside of the electric control box 1, and at least part of the first inductive device 310 is accommodated in the avoidance cavity. The heat dissipation of the first inductive device 310 can be dissipated to the protrusion b. The protrusion b has a large area, which is conducive to improving the heat radiation heat dissipation efficiency of the first inductive device 310. Moreover, the heat dissipation of the first inductive device 310 can be roughly concentrated in the avoidance cavity to reduce the heat of the first inductive device 310 from flowing to other positions in the electric control box 1, and reduce the temperature rise caused by the heat to other components on the circuit board 2. In addition, it is only necessary to set the first part to protrude in the direction away from the circuit board 2, and the second part of the first box wall 1a is a normal plate shape. The non-protruding second part can be closer to the first capacitive device 320, which is beneficial to the heat radiation dissipation of the first capacitive device 320 to the electrical control box 1. Moreover, since there is no need to increase the overall height of the first box wall 1a to move away from the circuit board 2, materials can be saved and manufacturing costs can be reduced.

[0108] It is understandable that the capacitive device 32 will not only generate heat when working, but also volatilize electrolyte. When the electrolyte accumulates to a certain concentration in a high-temperature closed environment, safety problems will arise. Therefore, the embodiment of the present invention also designs the electric control box 1 to disperse the electrolyte volatilized by the capacitive device 32 when working out of the electric control box 1, reduce the concentration of electrolyte emitted by the capacitive device 32 in the electric control box 1, and further improve the working reliability of the electric control component 100.

[0109] In some embodiments of the present invention, Figure 4 As shown, the electric control box 1 includes an inner shell 11 and an outer shell 12 covering the inner shell 11. The inner shell 11 has a through discharge hole 113. The inner end of the discharge hole 113 is connected to the inside of the electric control box 1. The outer shell 12 covers the outer end of the discharge hole 113. The discharge hole 113 does not directly connect the inside and the outside of the electric control box 1. The outflow path of the electrolyte is not simply to flow out of the electric control box 1 through the discharge hole 113. A gap 121 is formed between the outer shell 12 and the inner shell 11. The gap 121 is connected to the outer end of the discharge hole 113. A gap 122 is also formed between the outer shell 12 and the inner shell 11. The gap 122 is connected to the gap 121 and to the outside of the electric control box 1. The gap 122 connects the gap 121 to the outside of the electric control box 1. As a result, the volatilized electrolyte of the capacitive device 32 can be discharged to the outside of the electric control box 1 through the discharge hole 113, the gap 121 and the gap 122 in sequence.

[0110] Exemplarily, the gap 121 and the slit 122 are connected and are formed between the inner shell 11 and the outer shell 12. An angle is set between the outflow direction of the gap 121 and the outflow direction of the slit 122 to increase the air flow resistance in the discharge path formed by the discharge hole 113, the gap 121 and the slit 122, and reduce the occurrence of the airflow outside the electric control box 1 flowing into the inside of the electric control box 1 through the discharge path. In some specific embodiments, such as Figure 4 As shown, a gap 121 is formed between the outer shell 12 and the inner shell 11 covering the outer end of the discharge hole 113 , and in the cross-sectional direction, an extending direction of the gap 121 is perpendicular to an extending direction of the slit 122 .

[0111] For example, Figure 4 As shown, the flow width T1 of the gap 121 and the flow width T2 of the gap 122 are both smaller than the equivalent diameter D of the inner end of the discharge hole 113 (i.e., the end connected to the inside of the electric control box 1). When the electrolyte flows along the path of the discharge hole 113, the gap 121 and the gap 122, the flow area of ​​the electrolyte gradually decreases, and the flow rate of the electrolyte gradually increases. This ensures that the discharge path formed by the discharge hole 113, the gap 121 and the gap 122 is unidirectional, and only the electrolyte volatilized by the capacitor can be discharged through the discharge path, and no external airflow will enter the electric control box 1 to dissipate heat and cool down the electrical components inside the electric control box 1. Therefore, this path does not belong to the airflow channel for heat dissipation. In addition, when there is a heat dissipation duct 50 outside, the heat in the electric control box 1 and the negative pressure of the duct can be used to further improve the efficiency of unidirectional discharge of volatilized electrolyte.

[0112] In some embodiments of the present invention, Figure 4 As shown, there are multiple discharge holes 113, which increase the flow width of the electrolyte volatilized from the capacitor flowing out of the electric control box 1 and improve the outflow efficiency of the electrolyte.

[0113] In some embodiments of the present invention, the flow area of ​​the discharge hole 113 gradually decreases along the direction from the inner end (i.e., the end connected to the inside of the electric control box 1) to the outer end (i.e., the end connected to the gap 121), and the electrolyte volatilized from the capacitor flows from the electric control box 1 to the gap 121 through the discharge hole 113 in a unidirectional manner, thereby further ensuring the unidirectionality of the discharge path formed by the discharge hole 113, the gap 121 and the slit 122, and allowing the volatilized electrolyte to be discharged more effectively.

[0114] In some specific embodiments of the present invention, Figure 4As shown, there are multiple discharge holes 113, and the multiple discharge holes 113 are arranged at intervals along the extension direction of the gap 121, and the communication area between the discharge hole 113 and the gap 121 is increased, thereby improving the outflow efficiency of the electrolyte volatilized from the capacitor. The flow area of ​​each discharge hole 113 gradually decreases along the direction from the inner end to the outer end, and the flow area gradually decreases during the process of the electrolyte flowing from the discharge hole 113 to the gap 121, and the flow rate of the electrolyte gradually increases, so that the electrolyte remains unidirectional during the process of flowing out of the discharge hole 113, and the increase in the flow rate of the electrolyte allows the volatilized electrolyte to be discharged more effectively.

[0115] In some embodiments of the present invention, the electric control component 100 further includes an air duct cover 4 disposed outside the electric control box 1, and a heat dissipation air duct 50 is formed between the air duct cover 4 and the electric control box 1. The heat dissipation airflow flows through the heat dissipation air duct 50 to exchange heat with the electric control box 1, and the heat dissipation airflow takes away the heat radiated from the capacitive device 32 to the electric control box 1, thereby achieving heat dissipation of the heat generating device 3. Furthermore, by providing the air duct cover 4 to dissipate heat from the electric control box 1, it is not necessary to provide an airflow channel for heat dissipation on the electric control box 1, which can prevent pollutants such as oil and dust from entering the electric control box 1, thereby improving the working stability of the electric control component 100.

[0116] In the air flow direction of the heat dissipation duct 50, the discharge hole 113 is located downstream of the capacitive device 32. Figure 1 As shown, the direction of the arrow is the direction of air flow. The air flow first passes through the position opposite to the capacitive device 32, and then passes through the position opposite to the discharge hole 113. Therefore, the electrolyte volatilized from the capacitive device 32 can be discharged more directly and quickly through the heat dissipation duct 50, thereby improving the electrolyte discharge efficiency and improving safety.

[0117] It is understandable that if Figure 1 As shown, the arrow direction is the air flow direction. Figure 4 When the heat dissipation airflow flows through the gap 122, the pressure at the connection point between the gap 122 and the outside of the electric control box 1 is relatively small. By utilizing the negative pressure of the heat dissipation air duct 50, the electrolyte can be more effectively discharged from the electric control box 1 through the gap 122, thereby improving the discharge efficiency of the volatilized electrolyte.

[0118] In some embodiments of the present invention, Figure 1-Figure 3 As shown, the electric control component 100 also includes an air duct cover 4, which is arranged outside the electric control box 1 and is located on the side of the inductive device 31 away from the circuit board 2. A heat dissipation air duct 50 is formed between the air duct cover 4 and the electric control box 1. The air duct cover 4 itself or together with the electric control box 1 defines an air inlet 51 of the heat dissipation air duct 50, and the air duct cover 4 itself or together with the electric control box 1 defines an air outlet 52 of the heat dissipation air duct 50.

[0119] When the electric control component 100 is working, the heat generating device 3 generates heat, but the electric control box 1 of the present invention is not provided with a through hole for heat dissipation, so the inductive device 31 dissipates heat by heat radiation to the electric control box 1. By providing the air duct cover 4, a heat dissipation air duct 50 is formed between the air duct cover 4 and the electric control box 1. The heat dissipation airflow flows through the heat dissipation air duct 50 to exchange heat with the electric control box 1, and takes away the heat radiated from the inductive element to the electric control box 1, thereby accelerating the heat dissipation efficiency of the inductive device 31.

[0120] Optionally, the air duct cover 4 may form an air inlet 51 for the heat dissipation airflow to enter, or the air duct cover 4 and the electric control box 1 may jointly form an air inlet 51 for the heat dissipation airflow to enter. Similarly, the air duct cover 4 may form an air outlet 52 for the heat dissipation airflow to flow out, or the air duct cover 4 and the electric control box 1 may jointly form an air outlet 52 for the heat dissipation airflow to flow out.

[0121] The end of the inductive device 31 away from the circuit board 2 is the distal end of the inductive device 31. The distal end of the inductive device 31 is closest to the electric control box 1. The inductive device 31 mainly radiates heat from the electric control box 1 through the distal end. In some embodiments of the present invention, the air duct cover 4 is arranged outside the electric control box 1 near the distal end of the inductive device 31, so that the heat dissipation air duct 50 is closer to the distal end of the inductive device 31, which is conducive to accelerating the heat dissipation efficiency of the inductive device 31.

[0122] In some specific embodiments of the present invention, the air duct cover 4 is a plastic part, which not only forms the heat dissipation air duct 50, but also plays an insulating role to improve the safety of the electric control component 100. However, it is not limited thereto, and the air duct cover 4 can also be a metal cover, so that the air duct cover 4 can also dissipate heat by heat radiation.

[0123] In some embodiments of the present invention, Figure 1 As shown, the distance between the air duct cover 4 and the electric control box 1 is the height H0 of the heat dissipation duct 50, and the height of the heat dissipation duct 50 at least at the position corresponding to the inductive device 31 is 10mm to 15mm, for example, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, etc.

[0124] If the height of the heat dissipation duct 50 is too large or too small, it is not conducive to the heat dissipation of the inductive device 31. When the height of the heat dissipation duct 50 is too large, the flow rate of the heat dissipation airflow through the heat dissipation duct 50 is slow, and the heat exchange efficiency between the heat dissipation airflow and the electric control box 1 is low; when the height of the heat dissipation duct 50 is too small, the heat dissipation airflow flow is small and the heat dissipation capacity is insufficient. By setting the height of the heat dissipation duct 50 at the position corresponding to the inductive device 31 to the above range, the heat exchange efficiency of the heat dissipation airflow can be improved, thereby improving the heat dissipation speed of the inductive device 31.

[0125] In some embodiments of the present invention, the height of the heat dissipation duct 50 at least at the position corresponding to the inductive device 31 is kept consistent, so that the heat dissipation airflow has a uniform flow rate when flowing in the heat dissipation duct 50 corresponding to the inductive device 31, thereby improving the heat exchange efficiency between the heat dissipation airflow and the electric control box 1. Alternatively, the height of the heat dissipation duct 50 at least at the position corresponding to the inductive device 31 can also be set to a step change or a gradual change, which will not be described in detail here.

[0126] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the electric control box 1 includes a first box wall 1a, the first box wall 1a is located on a side of the inductive device 31 away from the circuit board 2, and the heat dissipation duct 50 is formed between the first box wall 1a and the duct cover 4. The first box wall 1a is a concave-convex shape, and the duct cover 4 is also configured to be a matching concave-convex shape at the concave-convex position corresponding to the first box wall 1a, so that the height of the heat dissipation duct 50 at the concave-convex position corresponding to the first box wall 1a is fixed.

[0127] The first box wall 1a is in a concave-convex shape, which increases the contact area between the first box wall 1a and the heat exchange airflow, improves the heat exchange speed, and is beneficial to the heat dissipation of the inductive device 31. By configuring the corresponding concave-convex positions of the air duct cover 4 to be in a matching concave-convex shape, the heat dissipation airflow can smoothly flow through the concave-convex positions of the first box wall 1a, improving the heat exchange efficiency between the heat dissipation airflow and the electric control box 1, which is beneficial to the heat dissipation of the inductive device 31.

[0128] In some specific embodiments of the present invention, Figure 1 and Figure 2 As shown, the height of the inductive device 31 is relatively high, and the first box wall 1a protrudes relative to the inductive device 31 in the direction away from the circuit board 2 to form a protrusion b, and the inner side of the protrusion b forms an avoidance cavity, and the inductive device 31 is arranged in the avoidance cavity. By setting the protrusion b, interference with the inductive device 31 can be avoided, and the distance between the first box wall 1a and the inductive device 31 and other components is maintained at a preset distance, which is conducive to the heat radiation and heat dissipation of the inductive device and other components and meeting the safety distance requirements. In addition, by setting the protrusion b, the heat radiation area of ​​the inductive device 31 can be increased, and the heat dissipation efficiency can be improved; the protrusion b also covers the heat dissipation of the inductive device 31, reducing the heat flow to other positions and causing adverse thermal effects on other components on the circuit board 2.

[0129] The air duct cover 4 located on the side of the protrusion b away from the circuit board 2 is also constructed in a shape that matches the protrusion b. The air duct cover 4 protrudes in the direction away from the circuit board 2, so that the height of the heat dissipation duct 50 formed between the air duct cover 4 and the protrusion b is fixed. The inductive device 31 is arranged in the avoidance cavity formed by the protrusion b. The inductive device 31 mainly radiates heat with the protrusion b. When the heat dissipation airflow flows in the heat dissipation channel, the heat dissipation area in contact is large, which improves the heat exchange speed. In addition, when the heat dissipation airflow flows in the heat dissipation duct 50 formed by the protrusion b and the air duct cover 4, since the height of the heat dissipation duct 50 is fixed, it is conducive to the smooth flow of the airflow, improves the heat exchange efficiency, and is conducive to the heat dissipation of the inductive device 31.

[0130] In one embodiment of the present invention, Figure 1 As shown, on the cross section of the circuit board 2, the cross-sectional width of the protrusion b gradually decreases in the direction away from the circuit board 2. The cross-sectional profile of the protrusion b is a trapezoid, and the two sides of the trapezoid gradually approach each other in the direction away from the circuit board 2 to form the upper base of the trapezoid. Correspondingly, the cross-sectional width of the air duct cover 4 at the position corresponding to the protrusion b also gradually decreases in the direction of the circuit board 2, and the cross-sectional profile of the air duct cover 4 at the corresponding position is also a trapezoid, and the two sides of the trapezoid formed by the cross-sectional profile of the air duct cover 4 are respectively arranged in parallel with the two sides of the trapezoid formed by the cross-sectional profile of the protrusion b, so that the heat dissipation air duct 50 is highly fixed at the position of the protrusion b.

[0131] In other embodiments of the present invention, Figure 2 As shown, on the cross section of the circuit board 2, the cross-sectional width of the protrusion b gradually decreases in the direction away from the circuit board 2. The cross-sectional profile of the protrusion b is in an arc shape, and the arc expands outward in the direction away from the inductive device 31. Correspondingly, the cross-sectional width of the air duct cover 4 at the position corresponding to the protrusion b also gradually decreases in the direction of the circuit board 2, and the cross-sectional profile of the air duct cover 4 at the corresponding position is in an arc shape, and the spacing between the two arcs remains fixed, so that the heat dissipation air duct 50 is highly fixed at the position of the protrusion b.

[0132] In some embodiments of the present invention, a capacitive device 32 is further provided on the circuit board 2. The capacitive device 32 is also housed in the electric control box 1 and is located on the same side of the circuit board 2 as the inductive device 31. In the airflow flow direction of the heat dissipation duct 50, at least one capacitive device 32 and at least one inductive device 31 are arranged in parallel, that is, at least one capacitive device 32 and at least one inductive device 31 do not have an upstream and downstream arrangement relationship, and the airflow does not flow through the two in sequence, thereby preventing heat crosstalk between the capacitive device 32 and the inductive device 31 and reducing the occurrence of adverse thermal effects on each other.

[0133] Optionally, there may be one capacitive device 32 or more capacitive devices 32; there may be one inductive device 31 or more inductive devices 31. In the airflow direction of the heat dissipation duct 50, one capacitive device 32 may be arranged in parallel with one inductive device 31; one capacitive device 32 may be arranged in parallel with multiple inductive devices 31; multiple capacitive devices 32 may be arranged in parallel with one inductive device 31; multiple capacitive devices 32 may be arranged in parallel with multiple inductive devices 31.

[0134] In some embodiments of the present invention, there are multiple capacitive devices 32 and multiple inductive devices 31, and in the airflow direction of the heat dissipation duct 50, the multiple inductive devices 31 are arranged in parallel, that is, the multiple inductive devices 31 have no upstream and downstream arrangement relationship, and the airflow does not flow through the multiple inductive devices 31 one after another; and / or, in the airflow direction of the heat dissipation duct 50, the multiple capacitive devices 32 are arranged in parallel, that is, the multiple capacitive devices 32 have no upstream and downstream arrangement relationship, and the airflow does not flow through the multiple capacitive devices 32 one after another.

[0135] In some specific embodiments of the present invention, the inductive device 31 includes a PFC inductor, and the capacitive device 32 includes a high-voltage electrolytic capacitor. The PFC inductor and the high-voltage electrolytic capacitor are located on the same side of the circuit board 2 and are arranged in parallel in the air flow direction of the heat dissipation duct 50 to prevent thermal crosstalk between the PFC inductor and the high-voltage electrolytic capacitor.

[0136] In some embodiments of the present invention, Figure 1 and Figure 5 As shown, the inductive device 31 includes a first inductive device 310, and the capacitive device 32 includes a first capacitive device 320. In the thickness direction of the circuit board 2, the height of the first inductive device 310 is higher than the height of the first capacitive device 320. The air inlet 51 includes a first inlet portion 511 located upstream of the first inductive device 310 and a second inlet portion 512 located upstream of the first capacitive device 320. The distance between the first inlet portion 511 and the circuit board 2 (for example, Figure 5 The distance in the third direction Z) is greater than the distance between the second inlet portion 512 and the circuit board 2 (for example, Figure 5 The distance in the third direction Z). That is, in the thickness direction of the circuit board 2 (for example Figure 5 In the middle third direction (Z), the height of the first inlet portion 511 is greater than the height of the second inlet portion 512 , the air inlet 51 has two portions of different heights, and the air inlet 51 is constructed in a stepped shape in the thickness direction of the circuit board 2 .

[0137] It is understandable that if the air inlet 51 is set as an opening with a fixed height in the thickness direction of the circuit board 2, since the height of the first inductive device 310 is higher than the height of the first capacitive device 320, the distance of the heat dissipation airflow to the heat dissipation air duct 50 relative to the first inductive device 310 is shorter. After the heat dissipation airflow exchanges heat with the electric control box 1 corresponding to the first inductive device 310, part of the heat dissipation airflow will flow to the electric control box 1 corresponding to the first capacitive device 320 arranged in parallel with the first inductive device 310, and will produce cross flow with the heat dissipation airflow that exchanges heat with the electric control box 1 corresponding to the first capacitive device 320, which not only reduces the fluidity of the heat dissipation airflow, but also reduces the heat exchange efficiency of the heat dissipation airflow.

[0138] By setting the air inlet 51 to have two parts with different heights, in the thickness direction of the circuit board 2, the distance between the first inlet part 511 and the first inductive device 310 is close to the distance between the second inlet part 512 and the first capacitive device 320, and in the flow direction of the airflow, the first inductive device 310 and the first capacitive device 320 are arranged side by side. Therefore, the distance from the first inlet part 511 to the heat dissipation duct 50 opposite to the first inductive device 310 is close to the distance from the second inlet part 512 to the heat dissipation duct 50 opposite to the first capacitive device 320, and the heat dissipation airflow for dissipating the first inductive device 310 and the heat dissipation airflow for dissipating the first capacitive device 320 flow side by side in the heat dissipation duct 50, reducing cross-flow and improving the heat exchange efficiency of the heat dissipation airflow.

[0139] In some embodiments of the present invention, Figure 1 As shown, the electric control box 1 includes a first box wall 1 a , which is located on a side of the inductive device 31 away from the circuit board 2 , and a heat dissipation duct 50 is formed between the first box wall 1 a and the duct cover 4 .

[0140] The inductive device 31 includes a first inductive device 310, and the capacitive device 32 includes a first capacitive device 320. In the airflow direction, the first inductive device 310 and the first capacitive device 320 are arranged in parallel; in the thickness direction of the circuit board 2, the height of the first inductive device 310 is higher than the height of the first capacitive device 320. The first inductive device 310 and the first capacitive device 320 are spaced at the same distance from the first box wall 1a, so the first box wall 1a protrudes in the direction away from the circuit board 2 relative to the first inductive device 310 to form a protrusion b, and the first box wall 1a is in a straight plate shape relative to the first capacitive device 320. The cross-sectional profile of the protrusion b is a trapezoid, and the two waists of the trapezoid gradually approach each other in the direction away from the circuit board 2. An avoidance cavity is formed on the inner side of the protrusion b, and the inductive device 31 is arranged in the avoidance cavity.

[0141] Correspondingly, the air duct cover 4 located on the side of the protrusion b away from the circuit board 2 is also constructed in a trapezoidal shape, which is adapted to the protrusion b, so that the height of the heat dissipation duct 50 formed between the air duct cover 4 and the protrusion b is fixed. The air duct cover 4 corresponding to the first capacitive device 320 is also constructed in a straight plate shape, and the height of the heat dissipation duct 50 corresponding to the first inductive device 310 is consistent with the height corresponding to the first capacitive device 320. The fixed height of the heat dissipation duct 50 is conducive to smooth air flow, reducing heat cross-flow, improving heat exchange efficiency, and facilitating heat dissipation of the first inductive device 310 and the first capacitive device 320.

[0142] like Figure 5 As shown, the air duct cover 4 defines an air inlet 51, and the air inlet 51 includes a first inlet portion 511 and a second inlet portion 512. The first inlet portion 511 is located upstream of the first inductive device 310, and the second inlet portion 512 is located upstream of the first capacitive device 320. The height of the first inlet portion 511 in the thickness direction of the circuit board 2 is greater than the height of the second inlet portion 512, and the air inlet 51 is constructed in a stepped shape in the thickness direction of the circuit board 2. The distance from the first inlet portion 511 to the heat dissipation air duct 50 opposite to the first inductive device 310 is equal to the distance from the second inlet portion 512 to the heat dissipation air duct 50 opposite to the first capacitive device 320, which can further reduce heat cross-flow and improve the heat exchange efficiency of the heat dissipation airflow.

[0143] In some embodiments of the present invention, Figure 3 As shown, the inductive device 31 includes a first inductive device 310, and the capacitive device 32 includes a first capacitive device 320. In the airflow direction, the first inductive device 310 and the first capacitive device 320 are arranged in parallel, and the height of the first inductive device 310 and the height of the first capacitive device 320 are consistent in the thickness direction of the circuit board 2. The first inductive device 310 and the first capacitive device 320 are spaced apart from the electric control box 1. The electric control box 1 includes an inner shell 11 and an outer shell 12 covering the inner shell 11. The inner shell 11 is formed with a first opening 111, and the first opening 111 is opposite to the first inductive device 310. The inner shell 11 is also formed with a second opening 112, and the second opening 112 is opposite to the first capacitive device 320. The first opening 111 and the second opening 112 are spaced apart, and the outer shell 12 blocks and closes the first opening 111 and the second opening 112.

[0144] In some embodiments of the present invention, Figure 5As shown, the first inductive device 310 and the first capacitive device 320 are arranged at intervals along the first direction X, and the air outlet 52 and the air inlet 51 are located on both sides of the first inductive device 310 in the second direction Y. The air inlet 51 is configured as a long strip opening whose length direction extends along the first direction X and whose width direction extends along the second direction Y, and the length of the air inlet 51 is more than 10 times the width of the air inlet 51.

[0145] The first inlet portion 511 and the second inlet portion 512 are sequentially arranged in the first direction X. By setting the air inlet 51 as a long strip opening extending along the first direction X, the airflow for dissipating heat to the first inductive device 310 and the first capacitive device 320 can flow into the air inlet 51 side by side, so that the heat dissipation airflow for dissipating heat to the first inductive device 310 and the heat dissipation airflow for dissipating heat to the first capacitive device 320 flow side by side in the heat dissipation air duct 50, thereby further reducing heat crosstalk and improving the heat exchange efficiency of the heat dissipation airflow.

[0146] The air inlet 51 is set as a long strip opening with a very small width, which can save space while ensuring the inflow, and reduce the entry of insects, large particles, etc. into the heat dissipation duct 50, thereby preventing the heat dissipation duct 50 from being blocked, thereby improving the working stability and cleanliness of the electronic control component 100.

[0147] In some embodiments of the present invention, the length of the air inlet 51 is about 20 cm, and the width of the air inlet 51 is about 15 mm. Of course, the present application is not limited thereto, and the length and width of the air inlet 51 can be flexibly adjusted according to the specifications of the electronic control component 100.

[0148] In some embodiments of the present invention, Figure 1-Figure 3 As shown, a power device 6 is also provided on the circuit board 2. The power device 6 generates heat when working. The power device 6 is arranged on the circuit board 2 and enclosed in the electric control box 1. Therefore, the electric control component 100 also includes a heat sink 7. The heat sink 7 cooperates with at least one power device 6 for heat transfer, and at least part of the heat sink 7 is located outside the electric control box 1. The heat sink 7 conducts the heat of the power device 6 to the outside of the electric control box 1, thereby improving the heat dissipation capacity of the power device 6.

[0149] In the air flow direction of the heat dissipation duct 50, the radiator 7 is located downstream of the inductive device 31. The heat dissipation airflow first passes through the electric control box 1 corresponding to the inductive device 31, and then passes through the radiator 7, thereby avoiding the heat of the radiator 7 from adversely affecting the heat dissipation of the inductive device 31. In addition, the heat dissipation airflow flowing in the heat dissipation duct 50 undergoes multiple heat exchanges, thereby improving the heat exchange efficiency of the heat dissipation airflow.

[0150] In some embodiments of the present invention, the power device 6 includes but is not limited to: 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), a bridge stack and other relatively small and short components.

[0151] In some embodiments of the present invention, the heat sink 7 includes heat dissipation fins, the power device 6 conducts heat to the heat dissipation fins, and the heat dissipation airflow flows through the heat dissipation fins to perform heat exchange with the heat dissipation fins, taking away the heat, thereby improving the heat dissipation effect of the power device 6. It is worth noting that the method of "heat transfer coordination" is not limited, for example, it can be direct or indirect contact heat transfer, or it can be heat radiation heat transfer with a small gap, etc.

[0152] Reference below Figure 6 and Figure 7 An air conditioner 1000 according to an embodiment of the second aspect of the present invention will be described.

[0153] According to the air conditioner 1000 of the embodiment of the present invention, Figure 6 As shown, the air conditioner 1000 includes a housing 200, a compressor 300, a first heat exchanger 400, a second heat exchanger 500, a supply fan 600, an exhaust fan 700, and an electronic control component 100 of any of the above items. For example, the electronic control component 100 can be used to control the actions of the compressor 300, the 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 supply fan 600 and the exhaust fan 700 provide a flowing air flow.

[0154] The housing 200 has an air supply duct 210 and an exhaust duct 220 that are isolated from each other. The first heat exchanger 400 is disposed in the air supply duct 210, and the second heat exchanger 500 is disposed in the exhaust duct 220. The first heat exchanger 400 and the second heat exchanger 500 are both connected to the compressor 300 and serve as an evaporator and a condenser, respectively. The inlet of the air supply fan 600 is connected to the air supply duct 210 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 220 and the outlet of the exhaust fan 700 is connected to the outdoor side, and the electric control component 100 is disposed on the air inlet path of the exhaust fan 700.

[0155] 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 210, 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 220. 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 210, 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 220. Alternatively, the air conditioner may have only one of the above two functions.

[0156] The electric control component 100 is arranged on the air inlet path of the exhaust fan 700. When the air supply fan 600 provides a flowing airflow to the second heat exchanger 500, the air supply fan 600 also causes an airflow to flow through the electric control component 100 to dissipate heat from the electric control component 100. The flowing airflow provided by the air supply fan 600 flows through the heat dissipation air duct 50 to perform heat exchange with the electric control box 1, thereby improving the heat dissipation capacity of the heating device 3 in the electric control component 100 and further improving the working reliability of the electric control component 100. Since the electric control component 100 is arranged on the air inlet path of the exhaust fan 700, 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.

[0157] The air conditioner 1000 of the embodiment of the present invention can achieve heat dissipation of the electric control component 100 by using the exhaust fan 700, without setting an additional exhaust fan, 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. In addition, it is also avoided that the exhaust fan occupies the internal space of the housing 200, which is beneficial to the flow of air in the exhaust duct 220 and the air supply duct 210, and avoiding reducing the air supply volume of the air conditioner 1000.

[0158] In some embodiments, a first opening or a plurality of first air inlet holes may be provided at a position of the housing 200 corresponding to the first heat exchanger 400; a second opening or a plurality of second air inlet holes may be provided at a position of the housing 200 corresponding to the second heat exchanger 500; the housing 200 may have a third opening, and the air inlet 51 of the heat dissipation duct 50 of the electronic control component 100 may extend out of or be exposed at the third opening.

[0159] 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 setting the above-mentioned electric control component 100. By setting the electric control component 100 on the air inlet path of the exhaust fan 700, the air supply fan 600 can achieve heat dissipation of the electric control component 100 while providing a flowing airflow to the second heat exchanger 500, without setting an additional exhaust fan, 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. In addition, it is also avoided that the exhaust fan occupies the internal space of the housing 200, which is beneficial to the flow of air in the exhaust air duct 220 and the air supply air duct 210, and avoiding reducing the air supply volume of the air conditioner 1000.

[0160] In some embodiments, Figure 7 As shown, the electric control component 100 is disposed in the exhaust air duct 220, and along the air intake path of the exhaust fan 700, the electric control component 100 is located upstream of the second heat exchanger 500. In the exhaust air duct 220, the airflow passes through the electric control component 100 first, and the heat dissipation airflow first exchanges heat with the electric control box 1 through the heat dissipation air duct 50, and then passes through the second heat exchanger 500, thereby improving the heat exchange efficiency between the ventilation airflow and the electric control component 100.

[0161] When the air conditioner 1000 cools the indoor side, the airflow provided by the exhaust fan 700 passes through the second heat exchanger 500 to take away the heat of the second heat exchanger 500, and the hot air flows to the outdoor side along the exhaust duct 220. Therefore, the electronic control component 100 is arranged upstream of the second heat exchanger 500, so that the heat exchange airflow with a lower temperature can pass through the electronic control component 100 first, thereby improving the heat dissipation efficiency of the electronic control component 100.

[0162] In other embodiments, the electric control component 100 is disposed in the exhaust air duct 220, and is arranged in parallel with the second heat exchanger 500 along the air intake path of the exhaust fan 700. While the air supply fan 600 provides a flowing airflow to the second heat exchanger 500, the air supply fan 600 also provides a flowing airflow to the electric control component 100 to dissipate heat from the electric control component 100, thereby preventing the two airflows after heat exchange from interfering with each other and improving the heat dissipation efficiency of both the second heat exchanger 500 and the electric control component 100.

[0163] In some embodiments, the exhaust fan 700 and the supply fan 600 are both disposed in the housing 200, and the air conditioner 1000 is an integrated air conditioner, which is easy to install and arrange. The supply fan 600 is disposed in the supply air duct 210, and the exhaust fan 700 is disposed in the exhaust air duct 220. The supply air duct 210 and the exhaust air duct 220 are isolated from each other by a partition 230. The compressor 300 connected to the first heat exchanger 400 and the second heat exchanger 500 can be disposed in the supply air duct 210 or in the exhaust air duct 220.

[0164] Of course, the present application is not limited to this. For example, in other embodiments of the present application, at least one of the exhaust fan 700 and the supply fan 600 can also be arranged outside the housing 200, while ensuring that the inlet of the supply fan 600 is connected to the supply air duct 210 and the outlet of the supply fan 600 is connected to the indoor side, and the inlet of the exhaust fan 700 is connected to the exhaust air duct 220 and the outlet of the exhaust fan 700 is connected to the outdoor side. The electronic control component 100 can be arranged on the air inlet path of the exhaust fan 700.

[0165] According to the air conditioner 1000 of the embodiment of the present invention, the electric control component 100 is arranged in the exhaust air duct 220, and along the air intake path of the exhaust fan 700, the electric control component 100 is located upstream of the second heat exchanger 500. When the exhaust fan 700 is working, the exhaust fan 700 forms a negative pressure area in the exhaust air duct 220, and the low-temperature gas (i.e., gas with a lower temperature than the electric control component 100) in the external environment of the housing is sucked into the negative pressure area to dissipate heat for the electric control component 100, and then provide airflow for heat dissipation for the second heat exchanger 500, thereby simplifying the structure and achieving high heat dissipation efficiency.

[0166] In some specific embodiments of the present invention, the air conditioner 1000 is an integrated air conditioner, which is embedded and installed on the ceiling of the kitchen. In the kitchen environment, there are oil smoke, dust, etc., and the installation environment of the ceiling is relatively closed and difficult to dissipate heat. Setting the electric control box 1 as a closed box body can effectively improve the working reliability of the electric control component 100. At the same time, the embodiments of the present application also propose a variety of heat dissipation solutions, which are conducive to solving the problem of heat dissipation difficulty of the electric control component 100 and improving the working reliability of the electric control component 100.

[0167] In some embodiments, the refrigerant in the compressor 300 includes carbon dioxide. Carbon dioxide has low flow loss, good heat transfer effect, and is safe and non-toxic. However, carbon dioxide has a low critical temperature and low refrigeration efficiency, so the operating pressure of the air conditioner 1000 is large, and the electronic control component 100 has higher requirements for heat dissipation. The air conditioner 1000 of the present invention is provided with the electronic control component 100 of the above embodiment, which can improve the heat dissipation efficiency of the electronic control component 100 and improve the working stability of the air conditioner 1000.

[0168] 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 100, but can also be used in other devices requiring electric control, which will not be elaborated here.

[0169] 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.

[0170] 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.

[0171] 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.

[0172] 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.

[0173] 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.

[0174] 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: An electric control box, which is a closed box body; A circuit board, the circuit board is housed in the electric control box; as well as A heating device includes an inductive device disposed on the circuit board, and the inductive device is accommodated in the electric control box.

2. The electronic control component according to claim 1, characterized in that: The inductive device comprises a first inductive device, an end of the first inductive device away from the circuit board is a distal end of the first inductive device, and a distance between the distal end of the first inductive device and the electric control box is 5 mm-10 mm.

3. The electronic control component according to claim 1, characterized in that: The inductive device includes a first inductive device, an end of the first inductive device away from the circuit board is a distal end of the first inductive device, the electric control box includes an inner shell and an outer shell covering the inner shell, the inner shell is an insulating shell and is formed with a first opening, the first opening is opposite to the distal end of the first inductive device, and the outer shell is a metal shell and blocks and closes the first opening.

4. The electronic control component according to claim 1, characterized in that: The inductive device includes a first inductive device, and the electrical control box includes a first box wall. The first box wall is located on a side of the first inductive device away from the circuit board. A portion of the first box wall protrudes in a direction away from the circuit board to form a protrusion, and an avoidance cavity is formed on the inner side of the protrusion. At least a portion of the first inductive device is accommodated in the avoidance cavity.

5. The electronic control component according to claim 4, characterized in that: In the cross section of the circuit board, the cross-sectional width of the protrusion gradually decreases along a direction away from the circuit board.

6. The electronic control component according to claim 5, characterized in that: The cross-sectional profile of the protrusion is trapezoidal or arc-shaped.

7. The electronic control component according to claim 6, characterized in that: The two sides of the trapezoid gradually approach each other in a direction away from the circuit board to form an upper base of the trapezoid, and the included angles between the upper base of the trapezoid and the two sides are both 135°±5°.

8. The electronic control component according to claim 5, characterized in that: The electric control component also includes an air duct cover arranged outside the electric control box, a heat dissipation air duct is formed between the air duct cover and the first box wall, and the air flow direction of the heat dissipation air duct is from one side of the cross-sectional width of the protrusion to the other side of the cross-sectional width.

9. The electronic control component according to claim 4, characterized in that: There are multiple first inductive components, and the first box wall has multiple protrusions, and each protrusion corresponds to one first inductive component.

10. The electronic control component according to claim 1, characterized in that: The heating device also includes a capacitive device arranged on the circuit board, and the capacitive device is accommodated in the electric control box.

11. The electronic control component according to claim 10, characterized in that: The capacitive device comprises a first capacitive device, an end of the first capacitive device away from the circuit board is a distal end of the first capacitive device, and a distance between the distal end of the first capacitive device and the electric control box is 5 mm-10 mm.

12. The electronic control component according to claim 10, characterized in that: The capacitive device includes a first capacitive device, an end of the first capacitive device away from the circuit board is the distal end of the first capacitive device, the electric control box includes an inner shell and an outer shell covering the inner shell, the inner shell is an insulating shell and is formed with a second opening, the second opening is opposite to the distal end of the first capacitive device, and the outer shell is a metal shell and blocks and closes the second opening.

13. The electronic control component according to claim 10, characterized in that: The inductive device includes a first inductive device, and the capacitive device includes a first capacitive device. The first inductive device and the first capacitive device are located on the same side of the circuit board in the thickness direction, and the height of the first inductive device in the thickness direction of the circuit board is higher than the height of the first capacitive device. The electric control box includes a first box wall, and the first box wall is located on a side of the first inductive device away from the circuit board. The distance between a first part of the first box wall corresponding to the first inductive device and the circuit board is greater than the distance between a second part of the first box wall corresponding to the first capacitive device and the circuit board.

14. The electronic control component according to claim 10, characterized in that: The electric control box includes an inner shell and an outer shell covering the inner shell, the inner shell having a through discharge hole, the inner end of the discharge hole being connected to the interior of the electric control box, the outer shell covering the outer end of the discharge hole, and a gap connected to the outer end of the discharge hole and a slit connecting the gap to the outside of the electric control box being formed between the outer shell and the inner shell, the flow width of the gap and the flow width of the slit being both smaller than the equivalent diameter of the inner end of the discharge hole.

15. The electric control component according to claim 14, characterized in that: There are multiple discharge holes; and / or, the flow area of ​​the discharge holes gradually decreases along the direction from the inner end to the outer end.

16. The electronic control component according to claim 14, characterized in that: The electric control component also includes an air duct cover arranged outside the electric control box, a heat dissipation air duct is formed between the air duct cover and the electric control box, and in the air flow direction of the heat dissipation air duct, the exhaust hole is located downstream of the capacitive device.

17. The electronic control component according to claim 1, characterized in that: Also includes: An air duct cover is arranged outside the electric control box and is located on a side of the inductive device away from the circuit board. A heat dissipation air duct is formed between the air duct cover and the electric control box. The air duct cover itself or together with the electric control box defines an air inlet of the heat dissipation air duct. The air duct cover itself or together with the electric control box defines an air outlet of the heat dissipation air duct.

18. The electronic control component according to claim 17, characterized in that: The distance between the air duct cover and the electric control box is the height of the heat dissipation air duct, and the height of the heat dissipation air duct at least at the position corresponding to the inductive device is 10 mm to 15 mm.

19. The electronic control component according to claim 18, characterized in that: The electric control box includes a first box wall, which is located on a side of the inductive device away from the circuit board. The heat dissipation duct is formed between the first box wall and the duct cover. The first box wall is a concave-convex shape, and the duct cover is also constructed with a matching concave-convex shape corresponding to the concave-convex position of the first box wall, so that the height of the heat dissipation duct at the concave-convex position corresponding to the first box wall is fixed.

20. The electronic control component according to claim 17, characterized in that: The circuit board is also provided with a capacitive device, which is also housed in the electric control box and is located on the same side of the circuit board as the inductive device. In the airflow direction of the heat dissipation duct, at least one capacitive device and at least one inductive device are arranged in parallel.

21. The electronic control component according to claim 20, characterized in that: The inductive device includes a first inductive device, and the capacitive device includes a first capacitive device. In the thickness direction of the circuit board, the height of the first inductive device is higher than the height of the first capacitive device. The air inlet includes a first inlet portion located upstream of the first inductive device and a second inlet portion located upstream of the first capacitive device. The distance between the first inlet portion and the circuit board is greater than the distance between the second inlet portion and the circuit board.

22. The electronic control component according to claim 21, characterized in that: The first inductive device and the first capacitive device are arranged at intervals along a first direction, the air outlet and the air inlet are located on both sides of the first inductive device in a second direction, the air inlet is constructed as a long strip opening whose length direction extends along the first direction and whose width direction extends along the second direction, and the length of the air inlet is more than 10 times the width of the air inlet.

23. The electronic control component according to claim 17, characterized in that: The circuit board is also provided with a power device, and the electronic control component also includes a heat sink, which cooperates with at least one of the power devices for heat transfer, and at least part of the heat sink is located outside the electronic control box. In the airflow direction of the heat dissipation duct, the heat sink is located downstream of the inductive device.

24. An air conditioner, characterized in that: It includes a shell, 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 1-23, the shell having 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 an evaporator and a condenser 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, and the electronic control component is arranged on the air inlet path of the exhaust fan.

25. The air conditioner according to claim 24, characterized in that: The electric control component is arranged in the exhaust air duct and along the air inlet path of the exhaust fan. The electric control component is located upstream of the second heat exchanger, or the electric control component and the second heat exchanger are arranged in parallel.

26. The air conditioner according to claim 24, characterized in that The exhaust fan and the air supply fan are both arranged in the shell.

27. The air conditioner according to claim 24, characterized in that: The refrigerant in the compressor includes carbon dioxide.

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