Electric control box and air conditioner with same

Abstract

The electric control box comprises a box body assembly and a first radiator, the box body assembly comprises a box body and an air duct cover, the box body defines a containing cavity and comprises a first box cover, the air duct cover is arranged on the side, away from the containing cavity, of the first box cover, and the first radiator is arranged on the side, away from the containing cavity, of the first box cover. A heat dissipation air channel is formed between the first box cover and the first box cover, the first box cover is made of non-metal materials and comprises an air channel wall area participating in limiting of the heat dissipation air channel, and a first opening area is formed in the first box cover. At least part of the first opening area is formed on the air duct wall area and occupies part of the air duct wall area; the first radiator is arranged at the first opening area and used for transmitting heat in the containing cavity to the heat dissipation air channel. According to the electric control box provided by the embodiment of the utility model, the first radiator is arranged to transfer heat to the accommodating cavity, and the heat dissipation air channel is formed outside the first box cover, so that the heat transfer efficiency in the accommodating cavity can be improved, the heat dissipation speed of the electric control box is improved, and the working stability and the use safety of the electric control box are improved; and the first box cover made of a non-metal material is arranged, so that the overall weight and cost of the box body can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of air-conditioning equipment, in particular to an electric control box and an air conditioner having the same. Background Art

[0002] In some electric control boxes in the related art, the heating modules of the internal circuit boards have many integrated functions and generate a large amount of heat, which makes it difficult to dissipate the heat generated by the components, affecting the working stability and safety of the electric control components. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention provides an electric control box having good heat dissipation performance.

[0004] The utility model also provides an air conditioner with the electric control box.

[0005] According to the first aspect of the present invention, the electric control box includes: a box body assembly and a first radiator, the box body assembly includes a box body and an air duct cover, the box body defines a accommodating cavity, and includes a first box cover, the air duct cover is arranged on a side of the first box cover away from the accommodating cavity, and a heat dissipation air duct is formed between the first box cover and the first box cover, the first box cover is made of non-metallic material and the first box cover includes an air duct wall area that participates in defining the heat dissipation air duct, a first opening area is formed on the first box cover, at least part of the first opening area is formed on the air duct wall area and occupies a part of the air duct wall area; the first radiator is arranged at the first opening area to transfer the heat in the accommodating cavity to the heat dissipation air duct.

[0006] According to the electric control box of the present invention, by providing a first radiator to transfer heat to the accommodating cavity and forming a heat dissipation duct outside the first box cover, the heat transfer efficiency in the accommodating cavity can be improved, the heat dissipation speed of the electric control box can be improved, and the working stability and use safety of the electric control box can be improved. In addition, by providing the first box cover made of non-metallic material, the overall weight and cost of the box body can be reduced.

[0007] In some embodiments, the first heat sink includes a first heat dissipation portion extending into the heat dissipation duct.

[0008] In some embodiments, the first heat dissipation portion includes a plurality of first heat dissipation columns and / or a plurality of first heat dissipation fins arranged at intervals.

[0009] In some embodiments, the first heat sink includes a second heat dissipation portion extending into the accommodating cavity.

[0010] In some embodiments, the second heat dissipation portion includes at least one of a heat dissipation bump, a plurality of second heat dissipation columns arranged at intervals, and a plurality of second heat dissipation fins arranged at intervals.

[0011] In some embodiments, the electric control box includes a circuit board, the circuit board includes a substrate and a first heating device provided on the substrate, the first heating device is provided on a side of the substrate facing the first box cover and is arranged corresponding to the first opening area.

[0012] In some embodiments, the first heat-generating component includes a passive component, and heat is transferred between the first heat sink and the passive component via a first heat-conducting medium.

[0013] In some embodiments, the first heat sink is integrally connected to the first box cover, and an edge of the first heat sink forms a circumferential seal with an edge of the first opening area; and / or, the first box cover is made of plastic.

[0014] In some embodiments, the first box cover is an integrally formed part and includes a top wall and a side wall, the side wall extends from the edge of the top wall toward one side in the wall thickness direction of the top wall, at least part of the accommodating cavity is formed between the top wall and the side wall, the air duct cover includes a cover body provided on a side of the top wall away from the side wall, the heat dissipation air duct is formed between the cover body and the top wall, and the first opening area is formed on the top wall.

[0015] In some embodiments, the box body is further formed with a second opening area, and the electrical control box further includes a second radiator, which is arranged at the second opening area and at least partially located outside the box body, and the part of the second radiator located outside the box body is arranged at the outlet of the heat dissipation duct.

[0016] In some embodiments, the electric control box further includes: a heat transfer pipe, wherein the heat transfer pipe passes through a portion of the second radiator located outside the box body.

[0017] In some embodiments, the second radiator includes a first part and a second part that are assembled and connected, the electrical control box includes a circuit board, the first part is installed on the circuit board, the second part is installed on a side of the first part away from the circuit board, at least part of the second part is located outside the box body, a first channel is formed between the first part and the second part, and a second channel is formed on the part of the second part located outside the box body, the heat transfer tube includes a first tube segment, a third tube segment and a second tube segment that are connected in sequence, the first tube segment is arranged in the first channel, and the second tube segment is arranged in the second channel.

[0018] In some embodiments, the second portion includes a plurality of third fins spaced apart along a first direction, and the length directions of the first tube segment and the second tube segment both extend along the first direction.

[0019] In some embodiments, the spacing direction between the first pipe segment and the second pipe segment is a second direction, the heat transfer tubes are multiple and spaced apart along a third direction, the second direction is orthogonal to the first direction, and the third direction is orthogonal to the first direction and the second direction respectively.

[0020] In some embodiments, an end of the third heat sink close to the first portion has a bent portion, the bent portion is supported on a surface of the first portion, and is crimped or welded to the first portion.

[0021] In some embodiments, the heat transfer pipe is a heat pipe with a built-in phase change medium, and is connected to the second portion by crimping or welding.

[0022] In some embodiments, the electric control box includes a circuit board, the second heat sink is mounted on the circuit board and penetrates the second opening area, and an edge of the second heat sink forms a full-circle sealing fit with an edge of the second opening area.

[0023] In some embodiments, the circuit board includes a substrate and a second heating device provided on the substrate, the second heating device is provided on the side of the substrate facing the first box cover and is arranged corresponding to the second opening area, a pad is sandwiched between the second heat sink and the substrate, and the pad is arranged to avoid the second heating device; and / or, the second heat sink and the second heating device are in contact and heat is transferred through a second heat-conducting medium.

[0024] In some embodiments, the height of the first heating device is greater than the height of the second heating device, the first box cover includes a first step portion and a second step portion, the distance from the first step portion to the substrate is greater than the distance from the second step portion to the substrate, the first opening area is formed on the first step portion, and the second opening area is formed on the second step portion.

[0025] In some embodiments, the box body further includes a second box cover, which is disposed on a side of the first box cover away from the air duct cover and is connected to the first box cover in a covering manner.

[0026] In some embodiments, a threading area is defined between the first box cover and the second box cover, the box body is a sealed box body, and includes a threading cover plate provided in the threading area, and the threading cover plate has threading holes.

[0027] An air conditioner according to a second aspect of the present invention includes the electric control box according to the first aspect of the present invention.

[0028] According to the electric control box of the embodiment of the present invention, by providing the electric control box, the heat dissipation performance of the electric control box is good, and the working reliability of the air conditioner can be improved.

[0029] In some embodiments, the electrical control box is arranged in the outdoor unit of the air conditioner, and the outdoor unit includes a shell and a middle partition arranged in the shell, and the middle partition divides the space in the shell into a compressor cavity and a fan cavity located on both sides of the middle partition. The electrical control box is arranged at the middle partition, and the inlet of the heat dissipation air duct is connected to the compressor cavity, and the outlet of the heat dissipation air duct is connected to the fan cavity.

[0030] 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

[0031] Figure 1 This is a schematic structural diagram of an electric control box according to an embodiment of the present utility model;

[0032] Figure 2 is a cross-sectional view of an electric control box according to one embodiment of the present utility model;

[0033] Figure 3 This is a structural diagram of a first radiator of an electric control box according to an embodiment of the present utility model;

[0034] Figure 4 This is an exploded view of the structure of an electric control box according to one embodiment of the present utility model;

[0035] Figure 5 This is a structural diagram of a second radiator of an electric control box according to an embodiment of the present utility model;

[0036] Figure 6 is a side view of a second radiator according to an embodiment of the present utility model;

[0037] Figure 7 This is an exploded view of the structure of the second radiator and the heat transfer tube according to one embodiment of the utility model;

[0038] Figure 8 Schematic diagram of the distance between the first cover and the base plate according to one embodiment of the present utility model;

[0039] Figure 9 This is a schematic structural diagram of an outdoor unit of an air conditioner according to an embodiment of the present utility model;

[0040] Figure 10It is a partial structural diagram of an outdoor unit according to one embodiment of the utility model.

[0041] Reference numerals:

[0042] Outdoor unit 1000;

[0043] Electric control box 100; first direction X; second direction Y; third direction Z;

[0044] Box assembly 1; box body 11; accommodating chamber 11a; first cover 111; first opening area S1; second opening area S2; air duct wall area 1110; top wall 1111; side wall 1112; first step 111a; distance H1 between first step and substrate; second step 111b; distance H2 between second step and substrate; second cover 112; threading area 113; air duct cover 12; heat dissipation duct 12a; cover body 121; cover side plate 122; threading cover plate 13; threading hole 131;

[0045] First heat sink 2; first heat dissipation portion 21; first heat dissipation fin 211; second heat dissipation portion 22; heat dissipation protrusion 221; second heat dissipation fin 222;

[0046] Circuit board 3; substrate 31; first heating element 32; passive element 32a; second heating element 33;

[0047] Second radiator 4; first portion 41; second portion 42; third fin 421; bent portion 4211; first channel 4a; second channel 4b;

[0048] Heat transfer tube 5; first tube section 51; second tube section 52; third tube section 53;

[0049] Pad 6;

[0050] Shell 200; compressor chamber 201; fan chamber 202; middle partition 300. DETAILED DESCRIPTION

[0051] 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.

[0052] 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.

[0053] The electric control box 100 according to the first embodiment of the present invention will be described below with reference to the accompanying drawings.

[0054] According to the electric control box 100 of the embodiment of the present utility model, Figure 1 and Figure 2 As shown, the electric control box 100 includes: a box body assembly 1 and a first radiator 2, the box body assembly 1 includes a box body 11 and an air duct cover 12, the box body 11 defines a accommodating cavity 11a, and includes a first box cover 111, the air duct cover 12 is arranged on a side of the first box cover 111 away from the accommodating cavity 11a, and a heat dissipation duct 12a is formed between the first box cover 111 and the first box cover 111, the first box cover 111 is made of non-metallic material and the first box cover 111 includes an air duct wall area 1110 that participates in defining the heat dissipation duct 12a, a first opening area S1 is formed on the first box cover 111, at least a portion of the first opening area S1 is formed on the air duct wall area 1110 and occupies a part of the air duct wall area 1110, that is, a part of the air duct wall area 1110 is occupied by the first opening area S1, or in other words, only a part of the air duct wall area 1110 is used to set the first opening area S1, and the rest of the air duct wall area also participates in defining the heat dissipation duct 12a. The first heat sink 2 is disposed at the first opening area S1 to transfer the heat in the accommodating cavity 11 a to the heat dissipation duct 12 a .

[0055] The electric control box 100 generates heat when in operation and is an electrically charged component. Therefore, the first box cover 111 defining the accommodating cavity 11 a is made of a non-metallic material to improve the electrical safety of the electric control box 100 .

[0056] A first opening area S1 is formed on one side surface of the first cover 111 that defines the heat dissipation duct 12a. At least a portion of the first opening area S1 is located in the heat dissipation duct 12a, and a portion of the first opening area S1 may extend outside the heat dissipation duct 12a.

[0057] The first radiator 2 is arranged in the first opening area S1. Compared with the first box cover 111 made of non-metallic material, the first radiator 2 has good thermal conductivity and can quickly transfer the heat in the accommodating cavity 11a to the heat dissipation duct 12a, that is, transfer it to the outside of the accommodating cavity 11a, thereby accelerating the heat transfer and improving the heat dissipation efficiency of the electronic control box 100.

[0058] In addition, a heat dissipation duct 12a is formed between the first box cover 111 and the air duct cover 12. A heat dissipation airflow flows in the heat dissipation duct 12a, which can quickly take away the heat transferred from the first radiator 2 to the heat dissipation duct 12a, further accelerating the heat transfer speed of the first radiator 2, improving the heat dissipation performance of the electrical control box 100, and thereby improving the working stability and safety of the electrical control box 100.

[0059] In addition, compared to designing the first box cover 111 as a metal part to dissipate heat from the accommodating cavity 11a, the utility model sets the first box cover 111 as a non-metal part, and forms a first opening area S1 on the first box cover 111 to dissipate heat from the accommodating cavity 11a, which can save manufacturing costs.

[0060] According to the electric control box 100 of the embodiment of the present invention, by providing a first radiator 2 to transfer heat to the accommodating cavity 11a, and forming a heat dissipation duct 12a outside the first box cover 111, the heat transfer efficiency in the accommodating cavity 11a can be improved, and the heat dissipation speed of the electric control box 100 can be improved, which is beneficial to improving the working stability and use safety of the electric control box 100.

[0061] In some embodiments of the present invention, Figure 2 and Figure 3 As shown, the first heat sink 2 includes a first heat dissipation portion 21 extending into the heat dissipation duct 12 a.

[0062] The first heat dissipation portion 21 of the first radiator 2 extends into the heat dissipation duct 12a, thereby increasing the contact area between the first radiator 2 and the heat dissipation airflow in the heat dissipation duct 12a, which can improve the heat exchange efficiency between the first radiator 2 and the airflow, and is beneficial to improving the heat dissipation speed of the electronic control box 100.

[0063] In some embodiments of the present invention, Figure 3 As shown, the first heat dissipation portion 21 includes a plurality of first heat dissipation columns and / or a plurality of first heat dissipation fins 211 arranged at intervals.

[0064] By arranging multiple first heat dissipation columns and / or multiple first heat dissipation fins 211 at intervals, the contact area between the first heat dissipation portion 21 and the heat dissipation airflow in the heat dissipation duct 12a can be further increased, thereby improving the heat exchange efficiency between the first heat dissipation portion 21 and the airflow.

[0065] In some embodiments of the present invention, Figure 3As shown, the first heat dissipation portion 21 includes a plurality of first heat dissipation fins 211 arranged at intervals. The length of the first heat dissipation fins 211 extends along the extension direction of the air duct, and an airflow gap for airflow to pass through is formed between two adjacent first heat dissipation fins 211.

[0066] The first heat sink 211 is positioned along the extension of the cooling duct 12a. Airflow through the first heat sink 211 flows along its length, reducing wind resistance within the cooling duct 12a and increasing the contact area between the first heat sink 211 and the airflow. The gaps between the two first heat sinks 211 guide and organize the airflow, improving airflow flow within the cooling duct 12a.

[0067] In some embodiments of the present invention, Figure 2 and Figure 3 As shown, the first heat sink 2 includes a second heat dissipation portion 22 extending into the accommodating cavity 11 a.

[0068] The second heat dissipation portion 22 of the first radiator 2 extends into the accommodating cavity 11a, thereby increasing the contact area between the first radiator 2 and the air in the accommodating cavity 11a, which can improve the heat transfer efficiency of the first radiator 2 to the accommodating cavity 11a, and is beneficial to improving the heat dissipation speed of the electronic control box 100.

[0069] In some embodiments of the present invention, Figure 3 As shown, the second heat dissipation portion 22 includes at least one of a heat dissipation bump 221 , a plurality of second heat dissipation columns 222 arranged at intervals, and a plurality of second heat dissipation fins 222 arranged at intervals.

[0070] By using at least one of the heat dissipation protrusions 221 , the plurality of second heat dissipation columns arranged at intervals, and the plurality of second heat dissipation fins 222 arranged at intervals, the contact area between the second heat dissipation portion 22 and the air in the accommodating cavity 11 a can be further increased, thereby improving the heat exchange efficiency of the second heat dissipation portion 22 .

[0071] In some embodiments of the present invention, Figure 3 As shown, the second heat dissipation portion 22 includes a plurality of second heat dissipation columns 222 arranged at intervals and a plurality of second heat dissipation fins 222 arranged at intervals.

[0072] In some embodiments of the present invention, Figure 2 As shown, the electric control box 100 includes a circuit board 3, which includes a base plate 31 and a first heating device 32 provided on the base plate 31. The first heating device 32 is provided on a side of the base plate 31 facing the first box cover 111 and is provided corresponding to the first opening area S1.

[0073] The first heating element 32 on the circuit board 3 generates heat during operation, and the heat transfer efficiency of the substrate 31 is poor. Therefore, the first heating element 32 is disposed on the side of the substrate 31 facing the first cover 111. Furthermore, the first heating element 32 is disposed corresponding to the first opening area S1, that is, the first heating element 32 is disposed corresponding to the first heat sink 2. This shortens the heat transfer path between the first heating element 32 and the first heat sink 2, thereby improving the heat transfer efficiency between the first heating element 32 and the first heat sink 2.

[0074] Optionally, the heat generated by the first heating device 32 can be indirectly transferred to the first radiator 2 through heat exchange with the air; or, also optionally, the first heating device 32 can also transfer heat directly to the first radiator 2 by means of thermal radiation; or, again optionally, the first heating device 32 and the first radiator 2 can also directly contact and transfer heat or indirectly contact and transfer heat through a heat-conducting medium other than air.

[0075] In some embodiments of the present invention, Figure 2 and Figure 4 As shown, the first heat-generating device 32 includes a passive device 32a, and heat is transferred between the first heat sink 2 and the passive device 32a via a first heat-conducting medium (non-gas).

[0076] Alternatively, the first heat-conducting medium may be a thermal pad or substrate with excellent thermal conductivity. Indirect heat exchange between the passive component 32a and the first heat sink 2 is achieved through the thermal pad or substrate, thereby reducing wear between the passive component 32a and the first heat sink 2. Alternatively, the first heat-conducting medium may be a coating structure such as thermal grease. Alternatively, the first heat-conducting medium may be a combination of several of the aforementioned heat-conducting media, which can be selected based on actual needs.

[0077] In some embodiments of the present invention, the passive components 32a include capacitors and inductors.

[0078] In some embodiments of the present invention, the first heat sink 2 is a metal part, the first heat conducting medium is an insulating heat conducting part, and heat is transferred between the first heat sink 2 and the passive component 32a through the insulating heat conducting part.

[0079] Metal has good thermal conductivity, which can improve the efficiency of heat transfer within the accommodating cavity 11a. However, applying high voltage to the circuit board 3 can create a risk of electrical conduction between the circuit board 3 and the first heat sink 2. Therefore, an insulating thermally conductive medium is provided between the passive component 32a and the first heat sink 2 to prevent electrical conduction between the circuit board 3 and the first heat sink 2, thereby improving the safety of the electrical control box 100.

[0080] In some embodiments of the present invention, the first heat sink 2 is integrally connected to the first box cover 111 , and the edge of the first heat sink 2 forms a full-circle sealing fit with the edge of the first opening area S1 .

[0081] The first radiator 2 is integrally connected to the first box cover 111 , which can improve the integrity of the first box cover 111 . During the assembly process, it is not necessary to assemble the first radiator 2 onto the first box cover 111 , which can simplify the assembly process and improve assembly efficiency.

[0082] In addition, the first radiator 2 is integrally connected to the first box cover 111, and the edge of the first radiator 2 forms a full-circle seal with the edge of the first opening area S1, which can improve the sealing of the first box cover 111, prevent external water and other pollutants from entering the electrical control box 100, improve the cleanliness of the electrical control box 100, and also prevent flammable refrigerant from entering the accommodating cavity 11a from the first opening area S1 and contacting the circuit board 3, thereby improving the working safety of the electrical control box 100.

[0083] Exemplarily, the first box cover 111 may be made of plastic, which helps to reduce weight and cost.

[0084] In some embodiments of the present invention, Figure 2 As shown, the first box cover 111 is an integrally formed part and includes a top wall 1111 and a side wall 1112. The side wall 1112 extends from the edge of the top wall 1111 toward one side in the wall thickness direction of the top wall 1111. At least part of the accommodating cavity 11a is formed between the top wall 1111 and the side wall 1112. Figure 2 and Figure 4 As shown, the air duct cover 12 includes a cover body 121 arranged on a side of the top wall 1111 away from the side wall 1112, a heat dissipation duct 12a is formed between the cover body 121 and the top wall 1111, and a first opening area S1 is formed on the top wall 1111 and is arranged corresponding to the cover body 121.

[0085] The first cover 111 is an integrally formed component, which enhances its integrity and sealing performance. Due to the excellent sealing performance of the first cover 111, heat within the accommodating cavity 11a is not easily dissipated. Therefore, a first opening area S1 is provided at the top of the first cover 111. A first heat sink 2 is disposed within the opening S1 to transfer heat within the accommodating cavity 11a to the heat dissipation duct 12a, accelerating heat dissipation from the electrical control box 100.

[0086] like Figure 4 As shown, the air duct cover 12 further includes a cover side plate 122, which extends from the edge of the cover body 121 toward one side in the thickness direction of the cover body 121. The air duct cover 12 is connected to the first box cover 111 via the cover side plate 122. The cover side plate 122 and the side wall 1112 are snap-fitted together, making assembly simple and easy to operate.

[0087] In some embodiments of the present invention, Figure 2 and Figure 4 As shown, the box body 11 is further formed with a second opening area S2, and the electric control box 100 further includes a second radiator 4, which is arranged at the second opening area S2 and is at least partially located outside the box body 11, and the portion of the second radiator 4 located outside the box body 11 is arranged at the outlet of the heat dissipation duct 12a.

[0088] A second radiator 4 is provided in the second opening area S2. Compared with the first box cover 111 made of non-metallic material, the second radiator 4 has good thermal conductivity and can quickly transfer the heat in the accommodating cavity 11a to the outside of the accommodating cavity 11a, thereby accelerating the heat transfer and improving the heat dissipation efficiency of the electrical control box 100.

[0089] After exchanging heat with the first radiator 2, the cooling airflow in the cooling duct 12a is still at a lower temperature than the second radiator 4. Therefore, the portion of the second radiator 4 located outside the housing 11 is positioned at the outlet of the cooling duct 12a. This allows the airflow that has dissipated heat from the first radiator 2 to be reused to dissipate heat from the second radiator 4, achieving secondary utilization. This accelerates the heat dissipation of the second radiator 4 and reduces manufacturing costs.

[0090] In some embodiments of the present invention, Figure 5-Figure 7 As shown, the electric control box 100 further includes a heat transfer tube 5 , which is passed through the portion of the second radiator 4 located outside the box body 11 .

[0091] By providing the heat transfer tube 5 passing through the second radiator 4 and utilizing the heat transfer tube 5 to cool the second radiator 4 , heat conduction between the second radiator 4 and the accommodating cavity 11 a can be accelerated, thereby improving the heat dissipation efficiency of the electric control box 100 .

[0092] In addition, the heat transfer tube 5 passes through the part of the second radiator 4 located outside the box body 11, and will not occupy the space in the accommodating cavity 11a, thereby reducing interference with the box body 11 and reducing the situation where flammable refrigerant enters the box body 11, thereby improving the safety of the electronic control box 100.

[0093] In some embodiments of the present invention, Figure 2As shown, the second heat sink 4 includes a first portion 41 and a second portion 42 that are assembled and connected. The electrical control box 100 includes a circuit board 3. The first portion 41 is mounted on the circuit board 3, and the second portion 42 is mounted on the side of the first portion 41 away from the circuit board 3. At least a portion of the second portion 42 is located outside the box body 11. The first portion 41 provides support and mounting, and the second heat sink 4 is mounted to the circuit board 3 via the first portion 41. The second portion 42 provides heat dissipation, and at least a portion of the second portion 42 is located outside the box body 11, transferring heat from the accommodating cavity 11a to the outside of the box body 11.

[0094] like Figure 7 As shown, a first channel 4a is formed between the first part 41 and the second part 42, and a second channel 4b is formed in the portion of the second part 42 located outside the box body 11. The heat transfer tube 5 includes a first tube segment 51, a third tube segment 53 and a second tube segment 52 connected in sequence. The first tube segment 51 is arranged in the first channel 4a, and the second tube segment 52 is arranged in the second channel 4b.

[0095] The second radiator 4 is formed with a first channel 4 a and a second channel 4 b for the heat transfer pipe 5 to pass through, which can improve the arrangement stability of the heat transfer pipe 5 and improve the reliability of heat transfer cooperation between the heat transfer pipe 5 and the second radiator 4 .

[0096] The heat transfer tube 5 includes a first tube section 51, a third tube section 53 and a second tube section 52 connected in sequence. At least the first tube section 51 and the second tube section 52 are in contact with the second radiator 4, which can increase the contact area between the heat transfer tube 5 and the second radiator 4 and improve the heat exchange effect between the heat transfer tube 5 and the second radiator 4.

[0097] In some embodiments of the present invention, Figure 5 and Figure 6 As shown, the second portion 42 includes a plurality of third fins 421 spaced apart along the first direction X, and the length directions of the first pipe section 51 and the second pipe section 52 both extend along the first direction X.

[0098] By arranging a plurality of third heat sinks 421 at intervals, the contact area between the second heat sink 4 and the heat dissipation airflow can be increased, thereby improving the heat exchange efficiency between the second heat sink 4 and the airflow.

[0099] The first pipe section 51 and the second pipe section 52 both extend along the spacing direction of the multiple third heat sinks 421. The first pipe section 51 and the second pipe section 52 both contact the multiple third heat sinks 421, which can increase the contact area between the heat transfer tube 5 and the second radiator 4 and improve the heat exchange effect between the heat transfer tube 5 and the second radiator 4.

[0100] In some embodiments of the present invention, Figure 6 and Figure 7As shown, the interval direction between the first pipe section 51 and the second pipe section 52 is the second direction Y. There are multiple heat transfer pipes 5 arranged at intervals along the third direction Z. The second direction Y is orthogonal to the first direction X, and the third direction Z is orthogonal to the first direction X and the second direction Y respectively.

[0101] There are multiple heat transfer pipes 5, which can increase the contact area between the heat transfer pipes 5 and the second radiator 4, and the temperatures at various parts of the second radiator 4 are balanced, which can improve the heat exchange effect between the heat transfer pipes 5 and the second radiator 4.

[0102] In some embodiments of the present invention, as Figure 6 and Figure 7 shown, the third pipe section 53 is connected between the first pipe section 51 and the second pipe section 52. The third pipe section 53 extends along the second direction Y. The heat transfer pipe 5 is configured as a 'C' - shaped structure. The heat transfer pipe 5 changes its turning direction at the third pipe section 53 to increase the contact area with the second radiator 4 and improve the heat exchange effect between the heat transfer pipe 5 and the second radiator 4.

[0103] In some embodiments of the present invention, as Figure 5 and Figure 7 shown, one end of the third fin 421 close to the first part 41 has a bending part 4211. The bending part 4211 supports on the surface of the first part 41 and is crimped or welded to the first part 41.

[0104] The thickness of the third fin 421 is relatively thin, so the contact area between the end of the third fin 421 and the first part 41 is small. By providing the bending part 4211 at one end of the third fin 421 close to the first part 41, the contact area between the third fin 421 and the first part 41 can be increased, and the installation stability of the third fin 421 can be improved.

[0105] In some embodiments of the present invention, the heat transfer pipe 5 is a heat pipe with a phase - change medium inside, and is connected to the second part 42 by crimping or welding.

[0106] The heat transfer pipe 5 and the second part 42 are connected as a whole by crimping or welding, which can improve the layout stability of the heat transfer pipe 5 and the integrity of the second radiator 4.

[0107] There is a phase - change medium in the heat transfer pipe 5. The phase - change medium changes from a liquid state to a gaseous state at the hot end, quickly absorbing a large amount of heat. The gaseous medium flows to the cold end and changes from a gaseous state to a liquid state at the cold end, quickly releasing a large amount of heat. The liquid medium flows back to the hot end. Heat transfer is achieved quickly in this way.

[0108] In some embodiments of the present invention, as Figure 2As shown, the electric control box 100 includes a circuit board 3 , a second heat sink 4 mounted on the circuit board 3 and passing through the second opening area S2 , and an edge of the second heat sink 4 forms a full-circle sealing fit with an edge of the second opening area S2 .

[0109] By providing the second radiator 4, not only the heat dissipation speed can be increased, but also the sealing of the box body 11 can be improved, thereby preventing external pollutants such as water from entering the electrical control box 100, improving the cleanliness of the electrical control box 100, and preventing the flammable refrigerant from entering the accommodating cavity 11a from the second opening area S2 and contacting the circuit board 3, thereby improving the working safety of the electrical control box 100.

[0110] In some embodiments of the present invention, Figure 2 and Figure 4 As shown, the circuit board 3 includes a substrate 31 and a second heating device 33 provided on the substrate 31. The second heating device 33 is provided on the side of the substrate 31 facing the first box cover 111 and is provided corresponding to the second opening area S2. A pad 6 is clamped between the second heat sink 4 and the substrate 31, and the pad 6 is provided to avoid the second heating device 33; and / or, heat is transferred between the second heat sink 4 and the second heating device 33 through contact via a second heat-conducting medium (non-gas).

[0111] The second heating device 33 on the circuit board 3 generates heat when working. The second heating device 33 is set corresponding to the second opening area S2, that is, the second heating device 33 is set corresponding to the second radiator 4, which can shorten the heat transfer path between the second heating device 33 and the second radiator 4 and improve the heat transfer efficiency between the second heating device 33 and the second radiator 4.

[0112] The number of second heating elements 33 is relatively large, and the surfaces of the second heating elements 33 facing the second heat sink 4 vary in height. Therefore, a spacer 6 is provided between the second heating elements 33 and the second heat sink 4. The spacer 6 is positioned away from the second heating elements 33, thereby preventing interference between the second heat sink 4 and the second heating elements 33, reducing wear on the second heating elements 33 and improving the reliability of the second heating elements 33. Furthermore, the provision of the spacer 6 improves the contact fit between the second heat sink 4 and the second heating elements 33, thereby improving the heat exchange efficiency between the second heat sink 4 and the second heating elements 33.

[0113] Alternatively, the second heat-conducting medium may be a thermal pad or substrate with good thermal conductivity. Indirect heat exchange between the second heat sink 4 and the second heating element 33 via the thermal pad or substrate can reduce wear between the second heat sink 4 and the second heating element 33. Alternatively, the second heat-conducting medium may be a coating structure such as thermal grease. Alternatively, the second heat-conducting medium may be a combination of several of the aforementioned heat-conducting media, which can be selected based on actual needs.

[0114] In some embodiments of the present invention, the second heat sink 4 is a metal member, and one of the support 6 and the second heat conducting medium is an insulating member.

[0115] Metal has good thermal conductivity, which can improve the efficiency of heat transfer within the accommodating cavity 11a. However, applying high voltage to the circuit board 3 can create a risk of electrical conduction between the circuit board 3 and the second heat sink 4. Therefore, an insulating member is provided between the second heating element 33 and the second heat sink 4 to prevent electrical conduction between the circuit board 3 and the second heat sink 4, thereby improving the safety of the electrical control box 100.

[0116] In some embodiments of the present invention, the second heating device 33 includes but is not limited to a rectifier bridge, an IGBT (Insulate-Gate Bipolar Transistor), a FRD (Fast Recovery Diode) and an IPM (Intelligent Power Module).

[0117] In some embodiments of the present invention, Figure 2 and Figure 4 As shown, the height of the first heating element 32 is greater than the height of the second heating element 33, and the first cover 111 includes a first step portion 111a and a second step portion 111b. Figure 8 As shown, the distance H1 from the first step portion 111a to the substrate 31 is greater than the distance H2 from the second step portion 111b to the substrate 31. Figure 1 and Figure 4 As shown, the first opening region S1 is formed at the first step portion 111 a , and the second opening region S2 is formed at the second step portion 111 b .

[0118] The space available for arrangement of the substrate 31 opposite the first step portion 111a is larger than the space available for arrangement of the substrate 31 opposite the second step portion 111b, and the height of the first heating device 32 is larger than the height of the second heating device 33. Therefore, the first heating device 32 is arranged at the corresponding first step portion 111a of the substrate 31, and the second heating device 33 is arranged at the corresponding second step portion 111b of the substrate 31.

[0119] A first opening area S1 is formed on the first step portion 111a and a first heat sink 2 is provided to dissipate heat from the first heating element 32 . A second opening area S2 is formed on the second step portion 111b and a second heat sink 4 is provided to dissipate heat from the second heating element 33 . This can improve the heat dissipation speed of the electric control box 100 .

[0120] In some embodiments of the present invention, Figure 4As shown, the box body 11 further includes a second box cover 112 . The second box cover 112 is disposed on a side of the first box cover 111 away from the air duct cover 12 and is covered and connected with the first box cover 111 .

[0121] The first cover 111 is located on the side of the substrate 31 of the circuit board 3 where the first heating device 32 and the second heating device 33 are arranged. The second cover 112 is located away from the side of the substrate 31 where the first heating device 32 and the second heating device 33 are arranged.

[0122] Optionally, the first box cover 111 and the second box cover 112 are snap-connected; or, further optionally, the first box cover 111 and the second box cover 112 are fixedly connected by fasteners; or, again optionally, the first box cover 111 and the second box cover 112 are snap-fitted and positioned, and then fixedly connected by fasteners, which can improve the assembly efficiency and connection stability of the first box cover 111 and the second box cover 112.

[0123] In some embodiments of the present invention, Figure 1 and Figure 4 As shown, a threading area 113 is defined between the first cover 111 and the second cover 112. The box body 11 is a sealed box body and includes a threading cover plate 13 disposed in the threading area 113. The threading cover plate 13 has threading holes 131. A sealed box body means that the box body 11 does not have a ventilation area for connecting the interior and exterior of the box body 11.

[0124] The wires inserted into the box body 11 or extended from the box body 11 pass through the box body 11 from the threading area 113, and the threading cover 13 covers the threading area 113, thereby protecting the wiring of the box body 11 and closing the threading area 113 to make the box body 11 a sealed box body, thereby improving the sealing of the box body 11.

[0125] The wire threading cover 13 has a wire threading hole 131, through which the wire passes to pass through the box body 11. The wire threading cover 13 can limit the wire position, thereby improving the regularity of the wiring, and the wire threading cover 13 squeezes the wire at the wire threading hole 131 to improve the sealing of the wiring.

[0126] In a second aspect, an embodiment of the present invention provides an air conditioner, comprising the electric control box 100 according to the embodiment of the first aspect of the present invention.

[0127] According to the electric control box 100 of the embodiment of the present invention, by providing the electric control box 100 , the heat dissipation performance of the electric control box 100 is good, and the working reliability of the air conditioner can be improved.

[0128] In some embodiments of the present invention, Figure 9 and Figure 10As shown, the electric control box 100 is arranged in the outdoor unit 1000 of the air conditioner. The outdoor unit 1000 includes a shell 200 and a middle partition 300 arranged in the shell 200. The middle partition 300 divides the space in the shell 200 into a compressor cavity 201 and a fan cavity 202 located on both sides of the middle partition 300. The electric control box 100 is arranged at the middle partition 300, and the inlet of the heat dissipation duct 12a is connected to the compressor cavity 201, and the outlet of the heat dissipation duct 12a is connected to the fan cavity 202.

[0129] When the fan in the fan cavity 202 is running, air convection is generated in the fan cavity 202, that is, negative pressure is formed at the outlet of the heat dissipation duct 12a. Under the action of the negative pressure, the inlet of the heat dissipation duct 12a sucks the airflow, and the airflow flows into the heat dissipation duct 12a to dissipate heat for the electronic control box 100, and flows along the heat dissipation duct 12a, and finally flows out from the outlet of the heat dissipation duct 12a.

[0130] By driving the airflow into the heat dissipation duct 12a by the operation of the wind wheel, the cost of separately providing a driving component in the heat dissipation duct 12a can be saved, and the structural complexity and the airflow resistance can be reduced.

[0131] In some embodiments of the present invention, the refrigerant pipe in the refrigerant circulation system provides cooling to the heat dissipation pipe passing through the second radiator 4 .

[0132] The refrigerant circulation system is used to provide cooling to the heat dissipation pipe for heat exchange with the electric control box 100 , which can accelerate the heat dissipation of the electric control box 100 , thereby reducing the manufacturing cost and improving the working reliability of the air conditioner.

[0133] In some embodiments of the present invention, the refrigerant pipe in the refrigerant circulation system serves as a heat dissipation pipe and passes through the second radiator 4 .

[0134] In some embodiments of the present invention, the electrical control box 100 is arranged in the outdoor unit 1000 of the air conditioner, and the refrigerant circulation system includes a compressor, a condenser, an evaporator and a throttling device. The condenser is arranged on the first refrigerant flow path from the exhaust port of the compressor to the throttling device, and the evaporator is arranged on the second refrigerant flow path from the throttling device to the return air port of the compressor. The refrigerant pipe of the second refrigerant flow path located in the outdoor unit 1000 serves as a heat dissipation pipe and is passed through the second radiator 4.

[0135] The compressor compresses the refrigerant into a high-temperature, high-pressure gaseous refrigerant. This high-temperature, high-pressure gaseous refrigerant is discharged from the compressor's exhaust port and flows along the first refrigerant flow path to the condenser. The refrigerant liquefies in the condenser, releasing heat and heating the airflow passing through it. The liquefied, low-temperature, high-pressure liquid refrigerant then flows along the first refrigerant flow path to the throttling device. The throttling device reduces the refrigerant's pressure, and the low-temperature, low-pressure liquid refrigerant flows along the second refrigerant flow path to the evaporator. The refrigerant vaporizes in the evaporator, absorbing heat and cooling the airflow. The vaporized, low-temperature, low-pressure gaseous refrigerant then flows back to the compressor along the second refrigerant flow path.

[0136] The refrigerant in the second refrigerant flow path is a low-temperature refrigerant. Therefore, the refrigerant pipe in the outdoor unit 1000 of the second refrigerant flow path is used as a heat dissipation pipe and is passed through the second radiator 4 to dissipate heat to the electrical control box 100, thereby improving the heat dissipation efficiency of the electrical control box 100.

[0137] 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.

[0138] 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.

[0139] 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.

[0140] 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.

[0141] 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.

[0142] 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 electric control box, characterized in that: include: A box assembly includes a box body and an air duct cover, wherein the box body defines an accommodating cavity and includes a first box cover, wherein the air duct cover is disposed on a side of the first box cover away from the accommodating cavity and forms a heat dissipation duct between the first box cover and the first box cover, wherein the first box cover is made of a non-metallic material and includes an air duct wall region that participates in defining the heat dissipation duct, wherein a first opening region is formed on the first box cover, and at least a portion of the first opening region is formed on the air duct wall region and occupies a portion of the air duct wall region; A first radiator is provided at the first opening area, and is used for transferring heat in the accommodating cavity to the heat dissipation duct.

2. The electric control box according to claim 1, characterized in that: The first heat sink includes a first heat dissipation portion extending into the heat dissipation duct.

3. The electric control box according to claim 2, characterized in that: The first heat dissipation portion includes a plurality of first heat dissipation columns and / or a plurality of first heat dissipation fins that are arranged at intervals.

4. The electric control box according to claim 1, characterized in that: The first heat sink includes a second heat dissipation portion extending into the accommodating cavity.

5. The electric control box according to claim 4, characterized in that: The second heat dissipation portion includes at least one of a heat dissipation bump, a plurality of second heat dissipation columns arranged at intervals, and a plurality of second heat dissipation fins arranged at intervals.

6. The electric control box according to claim 1, characterized in that: The electric control box includes a circuit board, which includes a base plate and a first heating device provided on the base plate. The first heating device is provided on a side of the base plate facing the first box cover and is arranged corresponding to the first opening area.

7. The electric control box according to claim 6, characterized in that: The first heat-generating component includes a passive component, and heat is transferred between the first heat sink and the passive component via a first heat-conducting medium.

8. The electric control box according to claim 1, characterized in that: The first heat sink is integrally connected to the first box cover, and the edge of the first heat sink forms a full-circumference sealing fit with the edge of the first opening area; And / or, the first box cover is made of plastic material.

9. The electric control box according to claim 1, characterized in that: The first box cover is an integrally formed part and includes a top wall and a side wall, the side wall extends from the edge of the top wall toward one side in the wall thickness direction of the top wall, at least part of the accommodating cavity is formed between the top wall and the side wall, the air duct cover includes a cover body arranged on a side of the top wall away from the side wall, the heat dissipation air duct is formed between the cover body and the top wall, and the first opening area is formed on the top wall.

10. The electric control box according to claim 6, characterized in that: The box body is further formed with a second opening area, and the electric control box further includes a second radiator, which is arranged at the second opening area and at least partially located outside the box body, and the part of the second radiator located outside the box body is arranged at the outlet of the heat dissipation duct.

11. The electric control box according to claim 10, characterized in that: Also includes: A heat transfer pipe is provided through a portion of the second radiator located outside the box body.

12. The electric control box according to claim 11, characterized in that: The second radiator includes a first part and a second part that are assembled and connected, the first part is installed on the circuit board, the second part is installed on a side of the first part away from the circuit board, at least part of the second part is located outside the box body, a first channel is formed between the first part and the second part, and a second channel is formed on the part of the second part located outside the box body, the heat transfer pipe includes a first pipe segment, a third pipe segment and a second pipe segment connected in sequence, the first pipe segment is arranged through the first channel, and the second pipe segment is arranged through the second channel.

13. The electric control box according to claim 12, characterized in that: The second portion includes a plurality of third fins spaced apart along a first direction, and the length directions of the first pipe segment and the second pipe segment both extend along the first direction.

14. The electric control box according to claim 13, characterized in that: The spacing direction between the first pipe segment and the second pipe segment is the second direction. There are multiple heat transfer pipes and they are spaced apart along a third direction. The second direction is orthogonal to the first direction, and the third direction is orthogonal to the first direction and the second direction respectively.

15. The electric control box according to claim 13, characterized in that: One end of the third heat sink close to the first portion has a bent portion, the bent portion is supported on the surface of the first portion, and is press-connected or welded to the first portion.

16. The electric control box according to claim 12, characterized in that: The heat transfer pipe is a heat pipe with a phase change medium built in, and is connected to the second part by crimping or welding.

17. The electric control box according to claim 10, characterized in that: The second heat sink is mounted on the circuit board and penetrates the second opening area, and the edge of the second heat sink and the edge of the second opening area form a full-circle sealing fit.

18. The electric control box according to claim 17, characterized in that: The circuit board includes a substrate and a second heating device arranged on the substrate, the second heating device is arranged on the side of the substrate facing the first box cover and is arranged corresponding to the second opening area, a pad is sandwiched between the second heat sink and the substrate, and the pad is arranged to avoid the second heating device; and / or, the second heat sink and the second heating device are in contact and heat is transferred through a second heat-conducting medium.

19. The electric control box according to claim 18, characterized in that: The height of the first heating device is greater than that of the second heating device, the first box cover includes a first step portion and a second step portion, the distance from the first step portion to the substrate is greater than the distance from the second step portion to the substrate, the first opening area is formed on the first step portion, and the second opening area is formed on the second step portion.

20. The electric control box according to claim 1, characterized in that: The box body further comprises a second box cover, which is arranged on a side of the first box cover away from the air duct cover and is connected to the first box cover in a covering manner.

21. The electric control box according to claim 20, characterized in that: A threading area is defined between the first box cover and the second box cover. The box body is a sealed box body and includes a threading cover plate provided in the threading area. The threading cover plate has threading holes.

22. An air conditioner, characterized in that: include: An electric control box according to any one of claims 1 to 21.

23. The air conditioner according to claim 22, characterized in that The electrical control box is arranged in the outdoor unit of the air conditioner, and the outdoor unit includes a shell and a middle partition arranged in the shell. The middle partition divides the space in the shell into a compressor cavity and a fan cavity located on both sides of the middle partition. The electrical control box is arranged at the middle partition, and the inlet of the heat dissipation duct is connected to the compressor cavity, and the outlet of the heat dissipation duct is connected to the fan cavity.

Images