Electric control component and air conditioner with same

Abstract

The electric control component comprises an electric control box and a circuit board, the electric control box comprises a first box body, the first box body comprises a first shell wall and a first side wall, the first side wall is arranged on the edge of the first shell wall, and a clamping portion is arranged on the first side wall. The circuit board is arranged in the electric control box, the first shell wall is located on one side of the circuit board in the thickness direction, the first side wall is located on the side face of the circuit board, and the side edge portion, close to the first side wall, of the circuit board is clamped and matched with the clamping portion so as to limit relative displacement of the circuit board and the first shell wall in the thickness direction. According to the electric control component provided by the embodiment of the utility model, the relative displacement of the circuit board along the thickness direction is limited by arranging the clamping part, so that the buckling deformation condition of the circuit board can be improved, the service life of the circuit board is prolonged, the condition that the circuit board is impacted to move can be reduced, and the arrangement stability of the circuit board is improved; and the working reliability of the circuit board is improved.

Description

Technical Field

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

[0002] In air-conditioning systems, the circuit boards in the electronic control box are at risk of warping and deformation, and there is also a risk of impacting the electronic control box, which affects the reliability of the circuit boards. Utility Model Content

[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 provides an electronic control component that can improve circuit board warping and deformation, reduce the risk of collision between electronic control boxes, and improve the operating reliability of the circuit board.

[0004] The utility model also provides an air conditioner with the above-mentioned electric control component.

[0005] According to the first aspect of the present utility model, the electric control component includes: an electric control box, the electric control box includes a first box body, the first box body includes a first shell wall and a first side wall, the first side wall is arranged at the edge of the first shell wall, and the first side wall has a locking portion; a circuit board, the circuit board is arranged in the electric control box, the first shell wall is located on one side of the circuit board in the thickness direction, the first side wall is located on the side of the circuit board, and the side edge of the circuit board close to the first side wall is engaged with the locking portion to limit the relative displacement of the circuit board and the first shell wall along the thickness direction.

[0006] According to the electronic control component of the embodiment of the present invention, by setting a locking portion to limit the relative displacement of the circuit board along the thickness direction, the warping and deformation of the circuit board can be improved, the service life of the circuit board can be extended, and the occurrence of the circuit board being affected by impact and movement can be reduced, thereby improving the layout stability of the circuit board and improving the working reliability of the circuit board.

[0007] In some embodiments, the clamping portion includes a supporting portion and a pressing portion arranged at intervals along the thickness direction, a slot is formed between the supporting portion and the pressing portion, the side portion of the circuit board extends into the slot to engage with the clamping portion, and the pressing portion is limited to the side of the circuit board away from the first shell wall.

[0008] In some embodiments, a first guide surface is formed at the end of the pressing portion close to the slot, and the first guide surface expands the width of the slot toward the circuit board; and / or a second guide surface is formed at the end of the supporting portion close to the slot, and the second guide surface expands the width of the slot toward the circuit board.

[0009] In some embodiments, the pressing portion includes a plurality of first ribs spaced apart along the length direction of the side portion of the circuit board; and / or the supporting portion includes a plurality of second ribs spaced apart along the length direction of the side portion of the circuit board.

[0010] In some embodiments, the circuit board includes a substrate and a first heating device, the first heating device is arranged on a side of the substrate facing the first shell wall, and the first shell wall has a heat dissipation portion arranged corresponding to the first heating device.

[0011] In some embodiments, the first box body includes a first inner shell and a first outer shell, the first outer shell covers the outside of the first inner shell, the first shell wall includes the first inner shell wall of the first inner shell, and the first outer shell wall of the first outer shell, the heat dissipation portion includes a through hole passing through the first inner shell wall, and the heat dissipation portion also includes a boss provided on the first outer shell wall, and the boss extends into the through hole toward the direction of the circuit board.

[0012] In some embodiments, the boss exchanges heat indirectly with the first heating element through a heat conducting member.

[0013] In some embodiments, the heat conducting member is an insulating heat conducting pad, and covers the through hole to seal with the first inner shell wall.

[0014] In some embodiments, the first inner shell wall has a protruding ring surrounding the through hole and protruding toward the circuit board. A ring-shaped groove surrounding the through hole is formed on the side of the protruding ring facing the circuit board, and the edge of the insulating thermal pad is embedded in the ring-shaped groove.

[0015] In some embodiments, the insulating thermal pad is bonded inside the convex ring.

[0016] In some embodiments, one of the first inner shell and the first outer shell has a limiting buckle located around the heat dissipation portion, and the other has a limiting groove that cooperates with the limiting buckle to limit the relative displacement of the first inner shell and the first outer shell along the thickness direction.

[0017] In some embodiments, the first outer shell is a metal member, and the first inner shell is an insulating member.

[0018] In some embodiments, the electric control box is constructed as a closed box body.

[0019] An air conditioner according to a second aspect of the present invention includes the electronic control component according to the first aspect of the present invention.

[0020] According to the air conditioner of the present invention, by providing the electronic control component of the first aspect, the heat dissipation performance of the electronic control component is good, and the working reliability of the air conditioner can be improved.

[0021] In some embodiments, the electronic control component is provided in the indoor unit of the air conditioner, and a driving module for driving the fan of the indoor unit is provided on the circuit board, and the driving module constitutes the first heating device.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural diagram of a first box body and a circuit board according to an embodiment of the present utility model;

[0024] Figure 2 is based on Figure 1 A partial enlarged view of area A of the example shown;

[0025] Figure 3 is based on Figure 1 a top view of the example shown;

[0026] Figure 4 is based on Figure 3 Section BB of the example shown;

[0027] Figure 5 is based on Figure 4 A partial enlarged view of region C of the example shown;

[0028] Figure 6 This is a structural schematic diagram of the first box body and the circuit board from another angle according to an embodiment of the present utility model;

[0029] Figure 7 This is a structural diagram of a first box body and a heat conducting member according to an embodiment of the present utility model;

[0030] Figure 8 is based on Figure 4 A partial enlarged view of region D of the example shown;

[0031] Figure 9 This is a structural schematic diagram of the first box body and the circuit board at another angle according to one embodiment of the utility model;

[0032] Figure 10 is based on Figure 9 A partial enlarged view of region E of the example shown;

[0033] Figure 11It is a structural exploded diagram of an electronic control component according to one embodiment of the utility model.

[0034] Reference numerals:

[0035] Electronic control component 100;

[0036] Electric control box 1; first box body 1a; first shell wall 11; first inner shell wall 111; protruding ring 1111; annular groove 1112; first outer shell wall 112; first side wall 12; locking portion 13; supporting portion 131; second guide surface 1311; second rib 1312; pressing portion 132; first guide surface 1321; first rib 1322; locking groove 133; heat dissipation portion 14; through hole 141; boss 142; first inner shell 1a1; first outer shell 1a2; limiting buckle 15; limiting groove 16; second box body 1b; second inner shell 1b1; second outer shell 1b2; third box body 1c;

[0037] Circuit board 2; substrate 21; side portion 211; first heating element 22; second heating element 23; thickness direction X;

[0038] Heat conducting member 3; Insulating heat conducting pad 3a. DETAILED DESCRIPTION

[0039] The following describes in detail embodiments of the present invention, 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 explain the present invention, and should not be construed as limiting the present invention.

[0040] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but a person of ordinary skill in the art will appreciate the applicability of other processes and / or the use of other materials.

[0041] The electronic control component 100 according to the first embodiment of the present invention will be described below with reference to the accompanying drawings.

[0042] According to the electric control component 100 of the embodiment of the present utility model, Figure 1 and Figure 2As shown, the electronic control component 100 includes an electronic control box 1 and a circuit board 2. The electronic control box 1 includes a first box body 1a, which includes a first shell wall 11 and a first side wall 12. The first side wall 12 is provided at the edge of the first shell wall 11 and has a retaining portion 13. The circuit board 2 is provided within the electronic control box 1. The first shell wall 11 is located on one side of the circuit board 2 in the thickness direction X, and the first side wall 12 is located on the side of the circuit board 2. The side edge 211 of the circuit board 2 adjacent to the first side wall 12 engages with the retaining portion 13 to limit relative displacement between the circuit board 2 and the first shell wall 11 in the thickness direction X.

[0043] The circuit board 2 is disposed within the electrical control box 1. The latching portion 13, which engages with the circuit board 2, restricts movement of the circuit board 2, reduces its movement due to impact, and enhances the stability of the layout of the circuit board 2, thereby improving the operational reliability of the circuit board 2. Furthermore, the simple latching engagement between the circuit board 2 and the latching portion 13 reduces the difficulty of assembling the electrical control component 100, thereby improving assembly efficiency.

[0044] The components on the circuit board 2 are generally arranged on the side of the circuit board 2 in the thickness direction X, and the first side wall 12 on the side of the circuit board 2 is used to limit the circuit board 2, which has less interference in the thickness direction X of the circuit board 2 and can improve the working stability of the circuit board 2.

[0045] The present invention limits the relative displacement of the circuit board 2 along the thickness direction X by providing the locking portion 13 , thereby improving the warping deformation of the circuit board 2 , extending the service life of the circuit board 2 , and improving the working reliability of the circuit board 2 .

[0046] According to the electronic control component 100 of the embodiment of the present invention, by providing the locking portion 13 to limit the relative displacement of the circuit board 2 along the thickness direction X, the warping and deformation of the circuit board 2 can be improved, the service life of the circuit board 2 can be extended, and the occurrence of the circuit board 2 being affected by impact can be reduced, thereby improving the layout stability of the circuit board 2 and improving the working reliability of the circuit board 2.

[0047] In some embodiments of the present invention, Figure 3 and Figure 4 As shown, the clamping portion includes a support portion 131 and a pressing portion 132 arranged at intervals along the thickness direction X. Figure 5 As shown, a slot 133 is formed between the supporting portion 131 and the pressing portion 132, and the side portion 211 of the circuit board 2 extends into the slot 133 to engage with the positioning portion 13, and the pressing portion 132 is limited to the side of the circuit board 2 away from the first shell wall 11, and the supporting portion 131 is supported on the side of the circuit board 2 close to the first shell wall 11.

[0048] The clamping portion includes a support portion 131 and a pressing portion 132 spaced apart along the thickness direction X. The support portion 131 and the pressing portion 132 clamp the circuit board 2 , thereby limiting the relative displacement of the circuit board 2 and the first shell wall 11 along the thickness direction X.

[0049] The side edge 211 of the circuit board 2 extends into the slot 133 to engage with the latching portion 13, providing greater stability for the circuit board 2 and the latching portion. Furthermore, the insertion of the side edge 211 of the circuit board 2 into the slot 133 simplifies assembly, reduces the difficulty of assembling the electronic control component 100, and improves assembly efficiency.

[0050] In some embodiments of the present invention, Figure 5 As shown, a first guide surface 1321 is formed at the end of the pressing portion 132 close to the locking slot 133 . The first guide surface 1321 expands the width of the locking slot 133 toward the circuit board 2 .

[0051] The first guide surface 1321 plays a guiding role. By setting the first guide surface 1321, it helps to guide the side portion 211 of the circuit board 2 to be inserted into the slot 133, which can reduce the difficulty of assembly, reduce the friction damage to the circuit board 2 during assembly, and improve the accuracy and convenience of assembly.

[0052] In some embodiments of the present invention, Figure 5 As shown, a second guide surface 1311 is formed at the end of the support portion 131 close to the locking slot 133 , and the second guide surface 1311 expands the width of the locking slot 133 toward the circuit board 2 .

[0053] Similarly, the second guide surface 1311 plays a guiding role. By setting the second guide surface 1311, it helps to guide the side portion 211 of the circuit board 2 to be inserted into the slot 133, which can reduce the difficulty of assembly, reduce the friction damage to the circuit board 2 during assembly, and improve the accuracy and convenience of assembly.

[0054] In some embodiments of the present invention, Figure 6 As shown, the pressing portion 132 includes a plurality of first ribs 1322 spaced apart along the length direction of the side portion 211 of the circuit board 2 .

[0055] The provision of multiple first ribs 1322 enhances the structural strength of the pressing portion 132, which presses against the side of the circuit board 2 away from the first housing wall 11 via the multiple first ribs 1322. Compared to designing the pressing portion 132 as a solid structure extending along the length of the side edge 211 of the circuit board 2, configuring the pressing portion 132 as a structure with multiple first ribs 1322 spaced apart along the length of the side edge 211 of the circuit board 2 further reduces the weight of the pressing portion 132, lessens the force applied to the circuit board 2, and contributes to a lightweight design of the electronic control component 100.

[0056] In some embodiments of the present invention, Figure 7 As shown, the support portion 131 includes a plurality of second ribs 1312 spaced apart along the length direction of the side portion 211 of the circuit board 2 .

[0057] The provision of multiple second ribs 1312 enhances the structural strength of the support portion 131, which is supported on the side of the circuit board 2 adjacent to the first housing wall 11 by the multiple second ribs 1312. Furthermore, compared to designing the support portion 131 as a solid structure extending along the length of the side edge 211 of the circuit board 2, configuring the support portion 131 as a structure with multiple second ribs 1312 spaced apart along the length of the side edge 211 of the circuit board 2 also reduces the weight of the support portion 131, thereby contributing to a lightweight design for the electronic control component 100.

[0058] In some embodiments of the present invention, Figure 4 As shown, the circuit board 2 includes a substrate 21 and a first heating device 22 . The first heating device 22 is arranged on a side of the substrate 21 facing the first shell wall 11 . The first shell wall 11 has a heat dissipation portion 14 corresponding to the first heating device 22 .

[0059] The first heating device 22 generates heat when in operation. The first heating device 22 is arranged on the side of the substrate 21 facing the first shell wall 11. A heat dissipation portion 14 is provided on the first shell wall 11 corresponding to the first heating device 22. The heat dissipation portion 14 can dissipate heat from the first heating device 22, thereby improving the working reliability of the circuit board 2.

[0060] The heat dissipation portion 14 and the first heating element 22 are in contact for a long time for heat exchange, which may cause the circuit board 2 to warp and deform under stress. By providing the locking portion 13 to limit the relative displacement of the circuit board 2 along the thickness direction X, the problem of warping and deformation of the circuit board 2 under stress can be improved.

[0061] Optionally, the heat dissipation portion 14 may exchange heat with the air in the electric control box 1 to dissipate heat from the circuit board 2 ; or, further optionally, the heat dissipation portion 14 may contact and transfer heat with the circuit board 2 to dissipate heat from the circuit board 2 .

[0062] In some embodiments of the present invention, Figure 6 and Figure 7 As shown, the first box body 1a includes a first inner shell 1a1 and a first outer shell 1a2, and the first outer shell 1a2 covers the first inner shell 1a1. Figure 4 As shown, the first shell wall 11 includes the first inner shell wall 111 of the first inner shell 1a1, and the first outer shell wall 112 of the first outer shell 1a2. The first box body 1a includes the first shell wall 11, and the first shell wall 11 is also a double-layer structure. The first shell wall 11 includes the first inner shell wall 111 and the first outer shell wall 112, and the first outer shell wall 112 covers the first inner shell wall 111.

[0063] like Figure 8 As shown, the heat dissipation portion 14 includes a through hole 141 penetrating the first inner shell wall 111 , and the heat dissipation portion 14 further includes a boss 142 provided on the first outer shell wall 112 , the boss 142 extending into the through hole 141 toward the circuit board 2 .

[0064] Thus, by providing the boss 142 extending through the through-hole 141, the boss 142 can effectively shorten the distance between the first housing wall 112 and the first heating device 22, thereby improving the heat transfer efficiency between the first housing wall 112 and the first heating device 22, thereby improving the heat dissipation performance of the electronic control component 100. The first housing wall 112 can exchange heat with the first heating device 22 via the boss 142, and the heat generated by the first heating device 22 is transferred out through the first housing wall 112, thereby dissipating heat from the circuit board 2.

[0065] In addition, the first inner shell wall 111 is penetrated by the first outer shell wall 112 to cooperate with the circuit board 2 for heat conduction, so that the heat of the first heating device 22 is transferred to the outside of the electric control box 1 through the first outer shell wall 112. The structure of the first shell wall 11 is simple and easy to manufacture, which can reduce the design and manufacturing costs.

[0066] In some embodiments of the present invention, Figure 8 As shown, the boss 142 is in indirect contact with the first heating element 22 for heat exchange through the heat conducting member 3 .

[0067] Compared to air heat transfer, the heat transfer efficiency of the heat conductor 3 is higher. The contact heat exchange between the boss 142 and the first heating element 22 through the heat conductor 3 is good, which can improve the heat dissipation effect of the first heating element 22. In addition, the contact heat transfer through the heat conductor 3 further stabilizes the relative position of the boss 142 and the first heating element 22, and reduces the possibility of misalignment between the boss 142 and the circuit board 2 due to impact.

[0068] Optionally, the heat conducting member 3 may be a heat conducting gasket, or, further optionally, the heat conducting member 3 may be a coating structure such as heat conducting silicone grease, which all fall within the protection scope of the present invention.

[0069] In some embodiments of the present invention, Figure 8 As shown, the heat conducting member 3 is an insulating heat conducting pad 3 a and covers the through hole 141 to be sealed with the first inner shell wall 111 .

[0070] The insulating thermal pad 3 a not only plays a role in heat transfer between the protrusion and the first heating element 22 , but also improves the safety of the electronic control component 100 .

[0071] When high voltage is applied to the circuit board 2 and the boss 142 is a conductor, there is a risk of electrical conduction between the circuit board 2 and the boss 142, causing leakage and short circuiting of the electronic control component 100. Therefore, the insulating thermal pad 3a is provided between the boss 142 and the first heating element 22 to prevent electrical conduction between the first heating element 22 and the boss 142, thereby improving the safety of the electronic control component 100.

[0072] In addition, the insulating thermal pad 3a covers the perforation 141 to seal with the first inner shell wall 111, so that the inner chamber of the electric control box 1 and the first outer shell 1a2 are isolated from each other. Compared with the method of directly using the perforation 141 of the first inner shell wall 111 to transfer heat between the air and the first outer shell wall 112, the sealing performance of the electric control box 1 is better, which can reduce the occurrence of flammable refrigerant entering the electric control box 1 and improve the situation where water vapor enters the electric control box 1 to produce condensation, thereby improving the electrical safety of the electric control component 100.

[0073] In some embodiments of the present invention, the first heating device 22, the insulating thermal pad 3a and the boss 142 are interference fit, and the insulating thermal pad 3a is squeezed by the first heating device 22 and the boss 142, with good contact, thereby improving the arrangement stability of the insulating thermal pad 3a and improving the heat transfer effect.

[0074] In some embodiments of the present invention, the thickness of the insulating thermal pad 3a is greater than or equal to 2 mm. The insulating thermal pad 3a can still maintain a certain thickness when squeezed, ensuring a safe distance between the first heating element 22 and the boss 142 and reducing the risk of voltage breakdown.

[0075] In some embodiments of the present invention, Figure 7 and Figure 8 As shown, the first inner shell wall 111 has a protruding ring 1111 surrounding the through-hole 141 and protruding toward the circuit board 2 .

[0076] The protruding ring 1111 is disposed around the through-hole 141, thereby increasing the structural strength of the first inner shell wall 111 at the through-hole 141, reducing the risk of cracking and damage to the first inner shell wall 111 at the through-hole 141, and improving the operational reliability of the first inner shell wall 111. Furthermore, the protruding ring 1111 serves as a guide for positioning the boss 142 through the through-hole 141, thereby improving the assembly efficiency of the first inner shell 1a1 and the first outer shell 1a2 and enhancing the mating accuracy of the first inner shell wall 111 and the first outer shell wall 112.

[0077] By providing the convex ring 1111, the fitting length between the boss 142 and the first inner shell wall 111 at the through-hole 141 and the hole wall can be increased, and the contact area between the boss 142 and the first inner shell wall 111 at the through-hole 141 can be increased, thereby improving the sealing between the boss 142 and the through-hole 141, and to a certain extent, preventing external flammable gases from entering the electrical control box 1, which is beneficial to improving the electrical safety of the electrical control component 100.

[0078] In some embodiments of the present invention, Figure 7 and Figure 8 As shown, an annular groove 1112 surrounding the through hole 141 is formed on one side of the protruding ring 1111 facing the circuit board 2 , and the edge of the insulating thermal pad 3 a is embedded in the annular groove 1112 .

[0079] The annular groove 1112 is provided to improve the installation stability of the insulating thermal pad 3 a , thereby improving the sealing and matching stability between the insulating thermal pad 3 a and the first inner shell wall 111 .

[0080] In some embodiments of the present invention, the insulating thermal pad 3 a is bonded inside the protruding ring 1111 .

[0081] The insulating thermal pad 3 a is bonded to the annular groove 1112 of the convex ring 1111 . The connection between the insulating pad and the first inner shell wall 111 is stable. The insulating pad covers the through hole 141 , thereby improving the sealing performance of the electric control box 1 .

[0082] It is worth noting that the boss 142 is in indirect contact with the first heating element 22 through the heat conducting member 3 for heat exchange, and the boss 142 will exert force on the circuit board 2. Figure 7 As shown, in the embodiment of the present invention, a locking portion 13 is provided near the boss 142. The locking portion 13 limits the relative displacement of the circuit board 2 along the thickness direction X, which can improve the situation where the circuit board 2 is warped and deformed due to the force of the boss 142 for a long time, extend the service life of the circuit board 2, and improve the working reliability of the circuit board 2.

[0083] In some embodiments of the present invention, Figure 9 and Figure 10As shown, one of the first inner shell 1a1 and the first outer shell 1a2 has a limiting buckle 15 located around the heat dissipation portion 14, and the other has a limiting groove 16 that cooperates with the limiting buckle 15 to limit the relative displacement of the first inner shell 1a1 and the first outer shell 1a2 along the thickness direction X.

[0084] Since the boss 142 passes through the through hole 141 to contact the circuit board 2 for heat exchange, a limiting buckle 15 is provided around the boss 142 to improve the connection stability between the first inner shell wall 111 and the first outer shell wall 112, so that the boss 142 can stably pass through the through hole 141, thereby improving the working reliability of the heat dissipation part 14.

[0085] In some embodiments of the present invention, Figure 9 and Figure 10 As shown, the first inner shell 1a1 has a limiting buckle 15, and the first outer shell 1a2 has a limiting groove 16, thereby improving the sealing performance of the electric control box 1.

[0086] In some embodiments of the present invention, the first outer shell 1a2 is a metal component, and the first inner shell 1a1 is an insulating component.

[0087] The first inner shell 1a1 ensures the safety of the circuit board 2 and ensures electrical insulation between the circuit board 2 and the first outer shell 1a2. The first outer shell 1a2 is made of metal (e.g., aluminum alloy or galvanized), which improves its impact resistance and the safety of the electronic control component 100. Furthermore, metal provides excellent heat dissipation, which improves the heat dissipation of the circuit board 2 from the first outer shell 1a2.

[0088] In some embodiments of the present invention, the first housing 1a2 is a fireproof sheet metal, which can effectively dissipate heat while improving the safety of the electronic control component 100. Optionally, the first housing 1a2 is a stainless steel galvanized sheet metal shell.

[0089] In some embodiments of the present invention, the first inner shell 1a1 is an insulating fireproof component, which can achieve safe insulation and fireproofing of the electric control component 100. Optionally, the first inner shell 1a1 is a flame-retardant plastic component.

[0090] In some embodiments of the present invention, the electric control box 1 is constructed as a closed box body to meet the sealing requirements of the electric control box 1 and effectively prevent flammable refrigerants or water from entering the electric control box 1, thereby ensuring the electrical safety of the electric control box 1.

[0091] It's worth noting that with rising environmental protection requirements, R290 is gradually replacing traditional refrigerants like R32 in air conditioners due to its cleanliness, ozone-safety, and minimal impact on the greenhouse effect. However, R290 is flammable. When leaked at low concentrations, it can explode when exposed to low-energy sparks. Therefore, the safety of R290 refrigerant usage must be ensured.

[0092] By designing the electric control box 1 as a closed box body, the combustible refrigerant is prevented from contacting the heating components in the electric control box 1 , thereby improving the electrical safety of the electric control box 1 .

[0093] In some embodiments of the present invention, Figure 11 As shown, the electric control box 1 includes a first box body 1a and a second box body 1b. The first box body 1a and the second box body 1b are disposed on opposite sides of the substrate 21 in the thickness direction X. The first box body 1a includes a first inner shell 1a1 and a first outer shell 1a2. The first box body 1a and the second box body 1b are coupled together via an offset convex groove. The electric control box 1 also includes a third box body 1c. After the first box body 1a and the second box body 1b are coupled together, they are assembled with the third box body 1c.

[0094] The joints of the first box body 1a, the second box body 1b and the third box body 1c are sealed, and the wire outlet of the electric control box 1 is sealed with a wire outlet rubber ring, so that the electric control box 1 is designed as a closed box body.

[0095] In some embodiments of the present invention, Figure 11 As shown, the second box body 1b includes a second inner shell 1b1 and a second outer shell 1b2, the second outer shell 1b2 is a metal part, and the second inner shell 1b1 is an insulating part.

[0096] In some embodiments of the present invention, the circuit board 2 further includes a second heating device 23, and the first heating device 22 and the second heating device 23 are disposed on both sides of the thickness of the substrate 21. Figure 11 As shown, the first heating device 22 is located on the other side of the substrate 21 and is therefore indicated by a dotted line. The second heating device 23 is located on the side close to the second box body 1b, and the first heating device 22 is located on the side close to the first box body 1a.

[0097] The heat generated by the second heating device 23 can also be transferred to the heat dissipation portion 14 on the first shell wall 11 through heat transfer from the substrate 21 or air. The heat dissipation portion 14 can not only dissipate heat for the first heating device 22, but also dissipate heat for other heating devices including the second heating device 23.

[0098] In a second aspect, an embodiment of the present invention provides an air conditioner, comprising the electronic control component 100 according to the embodiment of the first aspect of the present invention.

[0099] In the above technical solution, by adopting the above-mentioned electronic control component 100, the electronic control component 100 has good heat dissipation performance, which can improve the working reliability of the air conditioner.

[0100] In some embodiments of the present invention, the electronic control component 100 is provided in the indoor unit of the air conditioner, and a driving module for driving the fan of the indoor unit is provided on the circuit board 2 , and the driving module constitutes the first heating device 22 .

[0101] In the related art, the drive module and the fan are designed as one body. Long-term operation will cause the heat of the drive module to gradually accumulate. The drive module cannot be cooled, which will affect the operation of the fan and thus the air supply of the air conditioner.

[0102] The air conditioner of the embodiment of the present invention has a heat dissipation requirement by arranging the driving module for driving the fan of the indoor unit on the substrate 21. The electronic control component 100 itself has a heat dissipation requirement. While dissipating heat to other heating components on the circuit board 2, the driving module can also be dissipated, thereby improving the working stability of the driving module and improving the air supply effect of the air conditioner.

[0103] The driving module constitutes the first heating element 22. The driving module is relatively small and is arranged on the side of the substrate 21 facing the first shell wall 11, which can reduce the space occupied by the electronic control component 100. The heat dissipation part 14 dissipates heat from the driving module, thereby improving the working reliability of the driving module.

[0104] 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 to 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0105] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0106] In this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0107] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0108] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" 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 can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0109] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose 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, comprising a first box body, the first box body comprising a first shell wall and a first side wall, the first side wall being arranged at an edge of the first shell wall, and having a locking portion on the first side wall; A circuit board is arranged in the electric control box, the first shell wall is located on one side of the circuit board in the thickness direction, the first side wall is located on the side of the circuit board, and the side edge of the circuit board close to the first side wall is engaged with the locking portion to limit the relative displacement of the circuit board and the first shell wall along the thickness direction.

2. The electronic control component according to claim 1, characterized in that: The locking portion includes a supporting portion and a pressing portion arranged at intervals along the thickness direction, a slot is formed between the supporting portion and the pressing portion, the side portion of the circuit board extends into the slot to engage with the locking portion, and the pressing portion is limited to a side of the circuit board away from the first shell wall.

3. The electronic control component according to claim 2, characterized in that: A first guide surface is formed at an end of the pressing portion close to the card slot, and the first guide surface expands the width of the card slot toward the circuit board; And / or, a second guide surface is formed on an end portion of the support portion close to the slot, and the second guide surface expands the width of the slot toward the circuit board.

4. The electronic control component according to claim 2, characterized in that: The pressing portion includes a plurality of first ribs spaced apart along the length direction of the side portion of the circuit board; And / or, the supporting portion includes a plurality of second ribs spaced apart along the length direction of the side portion of the circuit board.

5. The electronic control component according to any one of claims 1 to 4, characterized in that: The circuit board includes a substrate and a first heating device. The first heating device is arranged on a side of the substrate facing the first shell wall. The first shell wall has a heat dissipation portion corresponding to the first heating device.

6. The electronic control component according to claim 5, characterized in that: The first box body includes a first inner shell and a first outer shell, the first outer shell covers the outside of the first inner shell, the first shell wall includes the first inner shell wall of the first inner shell, and the first outer shell wall of the first outer shell, the heat dissipation part includes a through hole passing through the first inner shell wall, and the heat dissipation part also includes a boss provided on the first outer shell wall, and the boss extends into the through hole toward the direction of the circuit board.

7. The electronic control component according to claim 6, characterized in that: The boss is in indirect contact with the first heating element for heat exchange via a heat conducting member.

8. The electronic control component according to claim 7, characterized in that: The heat conducting member is an insulating heat conducting pad and covers the through hole to be sealed with the first inner shell wall.

9. The electronic control component according to claim 8, characterized in that: The first inner shell wall has a convex ring surrounding the through hole and protruding toward the circuit board. A ring groove surrounding the through hole is formed on one side of the convex ring facing the circuit board, and the edge of the insulating thermal pad is embedded in the ring groove.

10. The electronic control component according to claim 9, characterized in that: The insulating thermal pad is bonded inside the convex ring.

11. The electronic control component according to claim 6, characterized in that: One of the first inner shell and the first outer shell has a limiting buckle located around the heat dissipation portion, and the other has a limiting groove that cooperates with the limiting buckle to limit the relative displacement of the first inner shell and the first outer shell along the thickness direction.

12. The electronic control component according to claim 6, characterized in that: The first outer shell is a metal part, and the first inner shell is an insulating part.

13. The electronic control component according to claim 1, characterized in that: The electric control box is constructed as a closed box body.

14. An air conditioner, characterized in that: The invention comprises an electronic control component according to any one of claims 1 to 13.

15. The air conditioner according to claim 14, wherein: The electronic control component is the electronic control component according to claim 5, and the electronic control component is arranged in the indoor unit of the air conditioner. The circuit board is provided with a driving module for driving the fan of the indoor unit, and the driving module constitutes the first heating device.

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