Electric control box, air conditioner outdoor unit and air conditioner

Abstract

The application discloses an electric control box, an air conditioner outdoor unit and an air conditioner, and relates to the technical field of air conditioners, and aims to solve the technical problem of short service life of electronic components. The electric control box comprises a box body and a mounting plate arranged in the box body. A first fan and a plurality of electronic components are arranged on the mounting side of the mounting plate. The first fan is used for forming a first heat dissipation airflow flowing along a first heat dissipation path. The first heat dissipation airflow is turned by the inner wall of the box body to form a second heat dissipation airflow flowing along a second heat dissipation path. The plurality of electronic components are distributed on the first heat dissipation path and the second heat dissipation path. The first heat dissipation path and the second heat dissipation path are located on the mounting side of the mounting plate. The air conditioner outdoor unit comprises the electric control box. The air conditioner comprises the air conditioner outdoor unit. The electric control box is used for the air conditioner outdoor unit. The air conditioner outdoor unit is used for working in cooperation with an air conditioner indoor unit. The air conditioner is used for adjusting the air temperature, humidity, flow rate and other parameters in a building or structure.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioners, in particular to an electric control box, an outdoor unit of an air conditioner and an air conditioner. BACKGROUND

[0002] An air conditioner refers to a device for artificially adjusting and controlling the temperature, humidity, flow rate and other parameters of air in a building or structure. The air conditioner usually comprises an electric control box, and electronic components such as filters and reactors are arranged in the electric control box. However, the heat generated by the electronic components during operation will cause the temperature of the electronic components to rise, affecting the working stability of the electronic components. SUMMARY

[0003] The main purpose of the present application is to provide an electric control box, an outdoor unit of an air conditioner and an air conditioner, which can improve the working reliability of electronic components.

[0004] To achieve the above-mentioned purpose, the electric control box provided by the present application comprises a box body and a mounting plate arranged in the box body, and a first fan and a plurality of electronic components are arranged on the mounting side of the mounting plate. The first fan is used to form a first heat dissipation airflow flowing along a first heat dissipation path, and the first heat dissipation airflow forms a second heat dissipation airflow flowing along a second heat dissipation path after being turned by the inner wall of the box body. The plurality of electronic components are distributed on the first heat dissipation path and the second heat dissipation path, and the first heat dissipation path and the second heat dissipation path are located on the mounting side of the mounting plate.

[0005] The beneficial effects of the present application are as follows: by arranging the first fan, a first heat dissipation airflow flowing along a first heat dissipation path is formed, and the first heat dissipation airflow forms a second heat dissipation airflow flowing along a second heat dissipation path after being turned by the inner wall of the box body; by distributing the plurality of electronic components on the first heat dissipation path and the second heat dissipation path, the heat generated by the electronic components during operation can be carried away by the first heat dissipation airflow and the second heat dissipation airflow, the temperature of the electronic components during operation is within a reliable temperature range, and the working stability of the electronic components is high.

[0006] On the basis of the above-mentioned technical solution, the present application can also be improved as follows.

[0007] Further, the first heat dissipation path and the second heat dissipation path are sequentially connected at the head and tail to form a circulating heat dissipation path.

[0008] Further, the mounting plate divides the space in the box body into a first chamber and a second chamber, and the plurality of electronic components are arranged in the first chamber; a heat exchanger is arranged in the second chamber.

[0009] Further, the mounting plate is provided with a first return air inlet and a second return air inlet penetrating the mounting plate, and the first return air inlet is located at the head end of the first heat dissipation path, and the second return air inlet is located at the tail end of the second heat dissipation path. Further, the mounting plate is provided with a first return air inlet and a second return air inlet penetrating the mounting plate, and the first return air inlet is located at the head end of the first heat dissipation path, and the second return air inlet is located at the tail end of the second heat dissipation path.

[0010] Further, the inlet of the first fan is communicated with the first return air outlet, and the outlet of the first fan is opposite to the first end of the first heat dissipation path.

[0011] Further, the mounting plate is a rectangular plate, the first return air outlet is located at a first corner of the rectangular plate, and the second return air outlet is located at a second corner of the rectangular plate, the second corner and the first corner are located at two ends of the same diagonal of the rectangular plate.

[0012] Further, the number of the second return air outlets is multiple, and the multiple second return air outlets are distributed along the first edge of the mounting plate; the first return air outlet is arranged on the second edge of the mounting plate, and the first edge and the second edge are arranged opposite to each other.

[0013] Further, the electric control box further comprises a second fan, and the second fan is arranged on the first heat dissipation path or the second heat dissipation path.

[0014] Further, the second fan is arranged at the first end of the second heat dissipation path.

[0015] Further, the second fan is arranged at the tail end of the second heat dissipation path; the air outlet directions of the first fan and the second fan are not intersected, and the second fan is used for forming a third heat dissipation airflow flowing along the third heat dissipation path.

[0016] Further, the multiple electronic components arranged on the mounting side of the mounting plate comprise a filter and a reactor, and the filter and the reactor are distributed on the first heat dissipation path.

[0017] Further, the box body is a sealed box body.

[0018] The application further provides an air conditioner outdoor unit comprising the electric control box according to any one of the technical solutions.

[0019] The application further provides an air conditioner comprising the air conditioner outdoor unit according to any one of the technical solutions.

[0020] The air conditioner outdoor unit and the air conditioner have the same beneficial effects as the electric control box, and thus are not described herein again. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of the drawings shown.

[0022] Figure 1 Structure diagram of the electric control box according to the embodiments of the present application Figure 1 ;

[0023] Figure 2 Structure diagram of the electric control box of an embodiment of the present application Figure 2 ;

[0024] Figure 3 Structure diagram of the electric control box of an embodiment of the present application Figure 3 ;

[0025] Figure 4 Structure diagram of the electric control box of an embodiment of the present application Figure 4 ;

[0026] Figure 5 Structure diagram of the electric control box of an embodiment of the present application Figure 5 ;

[0027] Figure 6 Structure diagram of the electric control box of an embodiment of the present application Figure 6 ;

[0028] Figure 7 Structure diagram of the mounting plate of an embodiment of the present application

[0029] Figure 8 Exploded view of the electric control box of an embodiment of the present application

[0030] Figure 9 Structure diagram of the electric control box of an embodiment of the present application Figure 7 ;

[0031] Figure 10 Structure diagram of the air conditioner outdoor unit of an embodiment of the present application

[0032] BRIEF DESCRIPTION OF THE DRAWINGS

[0033] DETAILED DESCRIPTION

[0034] In the related art, the electric control box is internally provided with electronic components, which can be, for example, filters, reactors, etc. The electronic components generate heat during use, resulting in a high temperature of the electronic components, which in turn reduces the working reliability of the electrical components. Therefore, the electronic components need to be cooled.

[0035] Therefore, the electric control box of an embodiment of the present application is provided with a first fan, which forms a first heat dissipation airflow. After the first heat dissipation airflow passes through the box body, it is turned to form a second heat dissipation airflow. The first and second heat dissipation airflows carry away the heat on the electronic components, thereby cooling the electronic components and making the working reliability of the electronic components high.

[0036] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be clearly and completely described below, obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the present application.

[0037] The electric control box of the embodiments of the present application can be a sealed electric control box for example. In this way, water droplets, dust and other foreign matters can be prevented from entering the electric control box and damaging the electronic components in the electric control box, achieving the effects of waterproofing, dustproofing and corrosion-proofing.

[0038] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , the embodiments of the present application provide an electric control box, which comprises a box body 100, a mounting plate 200, a first fan 300 and electronic components 400. The mounting plate 200 and the first fan 300 are arranged inside the box body 100, and the box body 100 is used for protecting the mounting plate 200 and the first fan 300. The mounting plate 200 is used for mounting the first fan 300 and the electronic components 400. The first fan 300 is used for driving the air flow in the box body 100 and forming a first heat dissipation airflow.

[0039] Please refer to Figure 1 , the first heat dissipation airflow formed by the first fan 300 flows along a first heat dissipation path, and when the first heat dissipation airflow flows to the inner wall of the box body 100, the first heat dissipation airflow is turned and forms a second heat dissipation airflow, which flows along a second heat dissipation path. The included angle between the first heat dissipation path and the second heat dissipation path can be any non-zero angle, for example, 60° as shown in Figure 1 .

[0040] The electronic components 400 are arranged on the mounting side of the mounting plate 200. In some embodiments, the electronic components 400 can be mounted on the mounting side of the mounting plate 200 by screwing, and in other embodiments, the electronic components 400 can be mounted on the mounting side of the mounting plate 200 by welding.

[0041] The number of the electronic components 400 is multiple, and the multiple electronic components 400 are arranged on the first heat dissipation path and the second heat dissipation path. The first heat dissipation airflow flowing on the first heat dissipation path carries away the heat generated by the electronic components 400 arranged on the first heat dissipation path when working, thereby cooling the electronic components 400 arranged on the first heat dissipation path. The second heat dissipation airflow flowing on the second heat dissipation path carries away the heat generated by the electronic components 400 arranged on the second heat dissipation path when working, thereby cooling the electronic components 400 arranged on the second heat dissipation path.

[0042] The electric control box of the embodiment of the present application is provided with the first fan 300, and the first fan 300 forms the first heat dissipation airflow flowing along the first heat dissipation path. The flowing direction of the first heat dissipation airflow changes after flowing to the inner wall of the box body 100, and then the first heat dissipation airflow turns to form the second heat dissipation airflow flowing along the second heat dissipation path. The first heat dissipation airflow and the second heat dissipation airflow carry away the heat generated by the electronic components 400 arranged on the first heat dissipation path and the second heat dissipation path during operation, so that the temperature of the electronic components 400 is within a reliable temperature range, and the operation reliability of the electronic components 400 is improved.

[0043] In some embodiments, the first heat dissipation path and the second heat dissipation path are sequentially connected at the head and tail, and the first heat dissipation path and the second heat dissipation path form a circulating heat dissipation path. The circulating heat dissipation path is located in the box body 100. The tail end of the first heat dissipation airflow flowing on the circulating heat dissipation path is connected with the head end of the second heat dissipation airflow, and the head end of the first heat dissipation airflow flowing on the circulating heat dissipation path is connected with the tail end of the second heat dissipation airflow. The first heat dissipation airflow and the second heat dissipation airflow form a circulating airflow, and the circulating airflow is located in the box body 100. At this time, the first heat dissipation airflow and the second heat dissipation airflow exchange heat with the electronic components 400 and the box body 100. In this way, the heat generated by the electronic components 400 during operation is replaced to the outside of the box body 100.

[0044] In some embodiments, the first heat dissipation path and the second heat dissipation path can also not form a circulating path. In this embodiment, the first heat dissipation airflow and the second heat dissipation airflow also do not form a circulating airflow.

[0045] Please refer to Figure 4 , Figure 5 and Figure 6 . The mounting plate 200 divides the space in the box body 100 into the first chamber 110 and the second chamber 120. The plurality of electronic components 400 are arranged in the first chamber 110, and the first heat dissipation airflow and the second heat dissipation airflow are located in the first chamber 110. The second chamber 120 is provided with a heat exchanger 500.

[0046] Please refer to Figure 4 and Figure 7 . The mounting plate 200 is provided with the first return air inlet 210 and the second return air inlet 220. The shape and size of the first return air inlet 210 are not specifically limited. The first return air inlet 210 is a through hole, and the two ends of the first return air inlet 210 are in communication with the first chamber 110 and the second chamber 120. The shape and size of the second return air inlet 220 are not specifically limited. The second return air inlet 220 is a through hole, and the two ends of the second return air inlet 220 are in communication with the first chamber 110 and the second chamber 120. The first return air inlet 210 is located at the head end of the first heat dissipation path, and the second return air inlet 220 is located at the tail end of the second heat dissipation path.

[0047] When the first fan 300 works, the first fan 300 drives the air in the second chamber 120 into the first chamber 110 through the first return air port 210, and forms the first heat dissipation airflow flowing along the first heat dissipation path, the first heat dissipation airflow is turned through the inner wall of the box body to form the second heat dissipation airflow flowing along the second heat dissipation path, the second heat dissipation airflow enters into the second chamber 120 through the second return air port 220, thus, the circulating airflow in the box body 100 is formed, and the circulating airflow flows in the first chamber 110 and the second chamber 120.

[0048] The first heat dissipation airflow and the second heat dissipation airflow in the first chamber 110 exchange heat with the electronic components 400 in the first chamber 110, and the heat generated by the electronic components 400 during work is replaced into the first heat dissipation airflow and the second heat dissipation airflow in the first chamber 110. The air in the second chamber 120 exchanges heat with the heat exchanger 500, and the heat carried by the air in the second chamber 120 is replaced into the refrigerant in the heat exchanger 500, and the refrigerant flows out of the box body 100, thus, the heat generated by the electronic components 400 during work is replaced to the outside of the box body 100. The heat exchanger in the application can be a micro-channel heat exchanger. The micro-channel heat exchanger includes at least two groups of micro-channels. The at least two groups of micro-channels include a plurality of first micro-channels for a first refrigerant flow to flow and a plurality of second micro-channels for a second refrigerant flow to flow, the second refrigerant flow absorbs heat from the first refrigerant flow to make the first refrigerant flow supercooled, or the first refrigerant flow absorbs heat from the second refrigerant flow to make the second refrigerant flow supercooled.

[0049] The micro-channel heat exchanger of the embodiment of the application can also be used as an economizer of an air conditioner. In this way, the micro-channel heat exchanger can be used to cool the electronic components in the electric control box, and can also be used as an economizer, so that an economizer can be avoided to be arranged outside the electric control box, the structure of the air conditioner is simplified, the space is saved, and the cost is also saved.

[0050] The structure of the box body 100 will be described in detail below with reference to the accompanying drawings.

[0051] In Figure 8 In the shown embodiment, the box body 100 includes a box body 130 and a box cover 140, the box body 130 includes a bottom plate 131 and a side plate 132 arranged on the edge of the bottom plate 131, the bottom plate 131 and the side plate 132 enclose a chamber with an opening, and the box cover 140 is arranged on the box body 130 to close the opening of the chamber. The bottom plate 131 can be a rectangular plate as Figure 8 shown, the side plate 132 can be a rectangular ring, and the box cover 140 can be a rectangular plate as Figure 8 shown, and the box body 130 and the box cover 140 enclose a rectangular box.

[0052] The structure of the mounting plate 200 will be described in detail below with reference to the drawings.

[0053] The shape of the mounting plate 200 can be Figure 7 The rectangular mounting plate 200 can be arranged in the box body 100 by threaded connection, clamping connection, welding connection, etc. For example, the edge of the mounting plate 200 can be provided with a bent plate, the bent plate is provided with a mounting hole, the box body 100 is provided with a fixing plate, the fixing plate can be an L-shaped plate, one end of the fixing plate is welded to the box body 100, the other end of the fixing plate is provided with a matching hole, the mounting hole on the bent plate and the matching hole on the fixing plate are arranged correspondingly, and the mounting plate 200 can be fixed in the box body 100 by using bolts and screws arranged in the mounting hole and the matching hole.

[0054] In Figure 7 In the embodiment shown, a plurality of second return air inlets 220 are arranged on the mounting plate 200, and the plurality of second return air inlets 220 are distributed along and spaced apart from the first edge of the mounting plate 200, and the first return air inlet 210 is arranged on the second edge of the mounting plate 200, and the first edge and the second edge are arranged opposite to each other. For example, in Figure 7 the embodiment shown, the first edge is the lower edge of the mounting plate, the second edge is the upper edge of the mounting plate, the first return air inlet 210 is arranged at one end of the second edge, and the second return air inlets are arranged on the entire edge of the first edge. In this way, the contact area between the air entering the second chamber 120 from the first chamber 110 and the heat exchanger 500 can be increased, and thus the efficiency of heat exchange between the air in the second chamber 120 and the heat exchanger 500 can be increased.

[0055] In some embodiments, the mounting plate 200 is a rectangular plate, the first return air inlet 210 is located at a first corner of the rectangular plate, and the second return air inlet 220 is located at a second corner of the rectangular plate, and the second corner and the first corner are located at two ends of the same diagonal of the rectangular plate. In this way, the air in the first chamber 110 can also enter the second chamber 120 through the second return air inlet 220, and the air in the second chamber 120 can enter the first chamber 110 through the first return air inlet 210.

[0056] The first fan 300 on the mounting plate 200 will be described in detail below with reference to the drawings.

[0057] The first fan 300 on the mounting plate 200 can be one of a centrifugal fan, an axial fan, and a cross-flow fan. In Figure 1 the embodiment shown, the first fan 300 can be an axial fan. It can be understood that the first fan 300 can be replaced by a centrifugal fan or a cross-flow fan for those skilled in the art.

[0058] Please refer to Figure 4 and Figure 7As shown, the housing of the first fan 300 is fixed on the mounting plate 200 by screwing, the inlet of the first fan 300 communicates with the first return air port 210 of the mounting plate 200, and the outlet of the first fan 300 is opposite to the first end of the first heat dissipation path. The first fan 300 sucks the air in the second chamber 120 into the first chamber 110 to form the first heat dissipation airflow in the first chamber 110.

[0059] The reactance box further comprises a second fan 800, which will be described in detail below in combination with the drawings.

[0060] Please refer to Figure 4 and Figure 6 The second fan 800 is arranged on the mounting plate 200 and located in the first chamber 110, and the second fan 800 is arranged on the first heat dissipation path or the second heat dissipation path. The second fan 800 can be one of a centrifugal fan, an axial fan and a cross-flow fan.

[0061] In some embodiments, the second fan 800 is arranged at the first end of the second heat dissipation path, and the first heat dissipation path is, for example, along Figure 1 the upper side of the box body 100 as shown, and the second heat dissipation path is, for example, along Figure 1 the right side of the box body 100 as shown, and the first end of the second heat dissipation path is, for example, at Figure 1 the upper right corner of the box body 100 as shown. At this time, the second fan 800 can be, for example, a cross-flow fan.

[0062] In other embodiments, the second fan 800 is arranged at the tail end of the second heat dissipation path, the air outlet directions of the first fan 300 and the second fan 800 do not intersect, the second fan 800 is used to form a third heat dissipation airflow flowing along a third heat dissipation path, and the second fan is, for example, a centrifugal fan. The third heat dissipation path is, for example, along Figure 2 the lower side of the box body 100 as shown. In this embodiment, the air outlet directions of the first fan 300 and the second fan 800 do not conflict, and the air outlet directions of the first fan 300 and the second fan 800 are opposite or oppositely inclined, for example, the first fan 300 blows air upward, the second fan 800 blows air downward, and again, for example, the first fan 300 blows air to the right, the second fan 800 blows air to the left, and the outlet of the first fan 300 is arranged staggered with the outlet of the second fan 800.

[0063] The second fan 800 can cooperate with the first fan 300 to regulate the flow rate and air volume of the air in the box body 100, so that the heat exchange efficiency between the air in the first chamber 110 and the electronic components 400 in the first chamber 110 is increased, the heat generated by the electronic components 400 during operation is timely taken away, and the working stability of the electronic components 400 is increased.

[0064] The electronic component 400 will be described below in conjunction with the accompanying drawings.

[0065] The plurality of electronic components 400 are divided into a first component group and a second component group, and the first component group and the second component group are arranged along the width direction of the box body 100. The first component group is arranged close to the upper edge of the box body 100, and the second component group is arranged close to the lower edge of the box body 100.

[0066] The number of electronic components 400 included in the first component group is not specifically limited and can be one, two, three, etc. For example, when the number of the first component group is three, the three electronic components 400 in the first component group are arranged at intervals along the first heat dissipation path.

[0067] In the embodiment shown in the drawings, Figure 9 In the embodiment shown in the drawings, the first component group can include a reactor 410 and a filter 420, and the number of the reactor 410 can be two. The filter 420 and the reactor 410 are arranged at intervals along the flow direction of the first heat dissipation airflow, and the filter 420 is arranged upstream of the reactor 410. Figure 9 In the embodiment shown in the drawings, Figure 9 The filter 420 is arranged close to the leading end of the first heat dissipation path, and the reactor 410 is arranged close to the trailing end of the first heat dissipation path.

[0068] The number of electronic components 400 included in the second component group is not specifically limited and can be one, two, three, etc. For example, when the number of the second component group is four, the four electronic components 400 in the second component group are arranged at intervals along the second heat dissipation path.

[0069] In the embodiment shown in the drawings, Figure 9 In the embodiment shown in the drawings, the electric control box further includes an expansion board 600 and a module board 700, and the number of the module board 700 can be two. The expansion board 600 and the module board 700 are located in the box body 100, and the expansion board 600 and the module board 700 are located in the first chamber 110. The second component group includes the expansion board 600 and the module board 700, and the expansion board 600 and the module board 700 are circuit boards. The expansion board 600 and the module board 700 are arranged at intervals along the second heat dissipation path, and the arrangement direction of the expansion board 600 and the module board 700 is parallel to the length direction of the box body 100 shown in the drawings. Figure 9 The expansion board 600 is arranged opposite to the filter 420, and the module board 700 is arranged opposite to the reactor 410. As shown in the drawings, Figure 5 and Figure 6 In the width direction of the box body 100, the filter 420 protrudes towards the expansion board 600 opposite to the reactor 410.

[0070] The heat exchanger 500 will be described below in conjunction with the accompanying drawings.

[0071] Please refer to Figure 8 Part of the structure of the heat exchanger 500 is located inside the box body 100, and the part of the heat exchanger 500 outside the box body 100 is in communication with the condenser outside the electric control box. The heat exchanger 500 has flowing refrigerant inside, and the refrigerant circulates and flows in the heat exchanger 500 and the condenser. The heat exchanger 500 can be arranged inside the second chamber 120, and the heat exchanger 500 can exchange heat with the air flowing from the first chamber 110 to the second chamber 120. The air flowing from the first chamber 110 to the second chamber 120 is the air after exchanging heat with the electronic components 400 in the first chamber 110. After the heat exchanger 500 exchanges heat with the air flowing from the first chamber 110 to the second chamber 120, the heat carried by the air flowing from the first chamber 110 to the second chamber 120 is replaced into the refrigerant in the heat exchanger 500. The refrigerant flows into the condenser, which is located outside the box body 100. The condenser exchanges heat with the air outside the box body 100. In this way, the heat generated by the electronic components 400 during operation is replaced to the outside of the box body 100.

[0072] Please continue to refer to Figure 8 The heat exchanger 500 generally includes a refrigerant heat exchange part 510, and the refrigerant heat exchange part 510 is provided with an inlet and an outlet. The refrigerant enters the inside of the refrigerant heat exchange part 510 through the inlet, and the refrigerant flows from the inside of the refrigerant heat exchange part 510 to the outside of the refrigerant heat exchange part 510 through the outlet.

[0073] The refrigerant heat exchange part 510 is arranged in the second chamber 120, and the air flowing from the first chamber 110 to the second chamber 120 contacts the refrigerant heat exchange part 510. The refrigerant heat exchange part 510 exchanges heat with the air in the second chamber 120. The heat carried by the air in the second chamber 120 is replaced into the refrigerant in the refrigerant heat exchange part 510. The refrigerant carrying heat flows into the condenser outside the box body 100. The heat carried by the refrigerant in the condenser is replaced into the air outside the box body 100. In this way, the heat generated by the electronic components 400 during operation is replaced into the air outside the box body 100, so that the electronic components 400 can reliably work.

[0074] Please continue to refer to Figure 8The heat exchanger 500 further comprises a refrigerant inlet pipe 520 and a refrigerant outlet pipe 530. A first end of the refrigerant inlet pipe 520 is in communication with the refrigerant heat exchange portion 510, a second end of the refrigerant inlet pipe 520 is located outside the box body 100, and the second end of the refrigerant inlet pipe 520 is in communication with the condenser; a first end of the refrigerant outlet pipe 530 is in communication with the refrigerant heat exchange portion 510, a second end of the refrigerant outlet pipe 530 is located outside the box body 100, and the refrigerant outlet pipe 530 is in communication with the condenser, so that the heat exchanger 500 is in communication with the condenser outside the box body 100.

[0075] The electric control box of the embodiment of the present application can be arranged on an air conditioner, for example, on an air conditioner outdoor unit of a central air conditioner. The condenser connected with the second end of the refrigerant outlet pipe 530 and the second end of the refrigerant inlet pipe 520 can be a condenser of a central air conditioner, so that the refrigerant in the working process of the central air conditioner can be used to exchange heat between the refrigerant and the air inside the electric control box, and then the heat generated by the electronic components 400 during operation is replaced to the outside of the electric control box.

[0076] In the embodiment provided with the heat exchanger 500, as shown in Figure 5 and Figure 8 , the box body 100 is provided with a first through hole 133 and a second through hole 134, the refrigerant inlet pipe 520 is arranged in the first through hole 133, the refrigerant outlet pipe 530 is arranged in the second through hole 134, and the first end of the refrigerant inlet pipe 520 is located inside the electric control box, the second end of the refrigerant inlet pipe 520 is located outside the electric control box, the first end of the refrigerant outlet pipe 530 is located inside the electric control box, and the second end of the refrigerant outlet pipe 530 is located outside the electric control box.

[0077] In the embodiment provided with the heat exchanger 500, a first sealing ring is arranged between the refrigerant inlet pipe 520 and the box body 100, and the first sealing ring is used to seal between the refrigerant inlet pipe 520 and the hole wall of the first through hole 133. A second sealing ring is arranged between the refrigerant outlet pipe 530 and the box body 100, and the second sealing ring is used to seal between the refrigerant outlet pipe 530 and the hole wall of the second through hole 134. In this way, the liquid such as rainwater outside the electric control box can be prevented from entering the inside of the electric control box through the first through hole 133 and the second through hole 134, so that the use safety of the electronic components 400 is high.

[0078] The air conditioner outdoor unit provided by the embodiment of the present application comprises the above-mentioned electric control box and the shell 900 provided by the present application, and the electric control box is located inside the shell 900 as shown in Figure 10 .

[0079] The air conditioner outdoor unit provided by the embodiment of the present application can be an outdoor unit of a central air conditioner. The electric control box is arranged inside the shell of the central air conditioner outdoor unit. The condenser in communication with the heat exchanger 500 in the electric control box can be a heat exchanger in the outdoor unit of the central air conditioner.

[0080] The central air conditioner outdoor unit is internally provided with two compressors and outdoor fans. Each module board in the electric control box is used to be connected with and control a corresponding compressor. Each module board in the electric control box is also used to be connected with and control a corresponding outdoor fan.

[0081] The air conditioner outdoor unit of the embodiment of the present application adopts the technical solution of the electric control box, and thus has all the beneficial effects brought by the technical solution of the electric control box, which will not be repeated here.

[0082] The air conditioner provided by the embodiment of the present application comprises the above air conditioner outdoor unit provided by the embodiment of the present application.

[0083] The air conditioner of the embodiment of the present application can be a central air conditioner, which comprises an outdoor unit of the central air conditioner and an indoor unit of the central air conditioner. The outdoor unit of the central air conditioner is installed outdoors, and the indoor unit of the central air conditioner is installed indoors. The indoor unit of the central air conditioner and the outdoor unit of the central air conditioner work together to realize the functions of air conditioning, refrigeration, heating, dehumidification, etc. In the central air conditioner, the number of the outdoor units of the central air conditioner is one, and the number of the indoor units of the central air conditioner is two or more.

[0084] The indoor heat exchanger and the outdoor heat exchanger are usually in communication through a refrigerant pipeline, so that the refrigerant between the indoor heat exchanger and the outdoor heat exchanger can flow. In the refrigeration process of the central air conditioner, the indoor heat exchanger is an evaporator, and the refrigerant in the evaporator absorbs heat from liquid to become gaseous. In the process of evaporation and heat absorption of the refrigerant, the evaporator exchanges heat with the air flowing through the evaporator, taking away the heat in the air in the indoor unit of the central air conditioner, so that the air discharged from the indoor unit of the central air conditioner is the air after heat release and cooling, and the indoor unit of the central air conditioner blows cold air. At the same time, the outdoor heat exchanger is a condenser, and the refrigerant in the condenser changes from gaseous to liquid. In the process of condensation and heat release of the refrigerant, the condenser exchanges heat with the air flowing through the condenser in the outdoor unit of the central air conditioner, so that the air in the outdoor unit of the central air conditioner takes the heat of the condenser to the outside of the outdoor unit of the central air conditioner, thereby realizing the refrigeration process.

[0085] In the heating process of a central air conditioning system, the outdoor heat exchanger acts as an evaporator, where the refrigerant changes from a liquid state to a gaseous state after absorbing heat during evaporation. During this process, the evaporator exchanges heat with the air flowing through it, transferring heat from the air in the outdoor unit to the refrigerant. Simultaneously, the indoor heat exchanger acts as a condenser, where the refrigerant changes from a gaseous state to a liquid state after condensation. During this process, the condenser exchanges heat with the air in the indoor unit, carrying away the heat and dissipating it from the indoor unit to the outside of the room, thus blowing hot air from the indoor unit and achieving the heating process.

[0086] The aforementioned electrical control box is installed inside the outdoor unit of the central air conditioning system. For example, the electrical control box can be used to control the operation of the compressor in the outdoor unit of the central air conditioning system, and the heat exchanger 500 inside the electrical control box can be connected to the outdoor heat exchanger.

[0087] Since the air conditioner of this embodiment adopts the above-mentioned electronic control box technical solution, it has at least all the beneficial effects brought about by the above-mentioned electronic control box technical solution, which will not be described in detail here.

[0088] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0089] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0090] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0091] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0092] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0093] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An electrical control box, characterized in that, The device includes a housing and a mounting plate disposed within the housing. The housing has two inner walls arranged opposite each other in a left-right direction. A first fan and multiple electronic components are disposed on the mounting side of the mounting plate. The first fan is used to generate a first heat dissipation airflow flowing along a first heat dissipation path. The first heat dissipation airflow is deflected by the inner wall of the housing to form a second heat dissipation airflow flowing along a second heat dissipation path. The multiple electronic components are distributed on the first heat dissipation path and the second heat dissipation path, and the first heat dissipation path and the second heat dissipation path are located on the mounting side of the mounting plate. The mounting plate divides the space inside the box into a first chamber and a second chamber. The plurality of electronic components are disposed in the first chamber. A heat exchanger is disposed in the second chamber, and the heat exchanger exchanges heat with the air in the second chamber. The mounting plate has a first return air inlet and a second return air inlet. The first return air inlet is located at the beginning of the first heat dissipation path and connects the first chamber and the second chamber. The second return air inlet is located at the end of the second heat dissipation path and connects the first chamber and the second chamber. The mounting plate extends in the left-right direction. The first return air vent is located on the upper side of the mounting plate and at one end in the left-right direction. The second return air vent is located on the lower side of the mounting plate. There are multiple second return air vents, and the multiple second return air vents are located along the entire lower edge of the mounting plate. The inlet of the first fan is connected to the first return air vent, and the outlet of the first fan faces the inner wall of the other end of the box in the left-right direction. The first fan drives the air in the second chamber into the first chamber through the first return air vent, and forms the first heat dissipation airflow that flows along the first heat dissipation path. The first heat dissipation path extends in the left-right direction. After the first heat dissipation airflow turns through the inner wall of the other end of the box in the left-right direction, it forms the second heat dissipation airflow that flows along the second heat dissipation path. The second heat dissipation airflow enters the second chamber through the second return air vent. The heat exchanger extends in the left-right direction within the second chamber, with its refrigerant inlet and outlet located at opposite ends of the left-right direction within the second chamber.

2. The electrical control box according to claim 1, characterized in that, The first heat dissipation path and the second heat dissipation path are connected end to end to form a loop heat dissipation path.

3. The electrical control box according to claim 1, characterized in that, The first return air vent and the second return air vent penetrate the mounting plate.

4. The electrical control box according to claim 3, characterized in that, The outlet of the first fan is opposite to the beginning of the first heat dissipation path.

5. The electrical control box according to claim 3, characterized in that, The mounting plate is a rectangular plate, the first return air vent is located at the first corner of the rectangular plate, the second return air vent is located at the second corner of the rectangular plate, and the second corner and the first corner are located at the two ends of the same diagonal of the rectangular plate.

6. The electrical control box according to claim 3, characterized in that, Multiple second return air vents are distributed at intervals along the first side of the mounting plate; The first return air vent is located on the second side of the mounting plate, the first side and the second side are arranged opposite to each other, and the first side is the lower side of the mounting plate and the second side is the upper side of the mounting plate.

7. The electrical control box according to any one of claims 1-6, characterized in that, The electrical control box also includes a second fan, which is disposed on the first heat dissipation path or the second heat dissipation path.

8. The electrical control box according to claim 7, characterized in that, The second fan is located at the beginning of the second heat dissipation path.

9. The electrical control box according to claim 7, characterized in that, The second fan is located at the end of the second heat dissipation path; The air outlet directions of the first fan and the second fan do not intersect, and the second fan is used to form a third cooling airflow that flows along the third cooling path.

10. The electrical control box according to any one of claims 1-6, characterized in that, The plurality of electronic components disposed on the mounting side of the mounting plate include filters and reactors, which are distributed along the first heat dissipation path.

11. The electrical control box according to any one of claims 1-6, characterized in that, The box is a sealed box.

12. An outdoor unit for an air conditioner, characterized in that, Includes the electrical control box as described in any one of claims 1-11.

13. An air conditioner, characterized in that, Includes the outdoor unit of the air conditioner as described in claim 12.

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