Outdoor unit of air conditioner

Abstract

An outdoor unit of an air conditioner according to an embodiment of the present invention comprises: a housing in which an outside air inlet is formed; a shield dividing the inside of the housing into a heat exchange space and an electronic device space; a heat exchanger disposed in the heat exchange space; a fan disposed in the heat exchange space; a compressor disposed in the electronic device space; the control box assembly is arranged in the electronic equipment space; the control box assembly comprises: a control box which is connected to the outside air inlet and in which electronic equipment components are arranged; the heat dissipation pipeline is connected with the interior of the control box and extends to the shielding piece from one side of the control box; air flowing in through the external air inflow port can be exhausted to the heat exchange space after passing through the control box and the heat dissipation pipeline.

Description

Technical Field

[0001] The present invention relates to an outdoor unit of an air conditioner. Background Art

[0002] An air conditioner is a device that uses heat exchange between a refrigerant flowing in a heat exchange cycle and indoor and outdoor air to cool or heat an indoor space.

[0003] In detail, the air conditioner includes: a compressor for compressing a refrigerant; an outdoor heat exchanger for achieving heat exchange between the refrigerant and outdoor air; and an indoor heat exchanger for achieving heat exchange between the refrigerant and indoor air.

[0004] The air conditioner may be provided with a heat storage tank. The heat storage tank may store a fluid that is heated or cooled by a refrigerant circulating in the air conditioner. As an example, the fluid may include water.

[0005] The outdoor unit of the air conditioner may include a casing and the compressor, the outdoor heat exchanger, and the heat storage tank accommodated inside the casing.

[0006] On the other hand, as global environmental restrictions gradually increase, there is a demand for conversion to environmentally friendly refrigerants. For example, some countries are enacting relevant laws to stipulate that only refrigerants with a global warming potential (GWP) of less than 100 should be used in the next five years. Among the refrigerants that meet this requirement, R290 is becoming a refrigerant with high competitiveness in terms of environmental protection and performance.

[0007] However, compared with other existing refrigerants, refrigerant R290 is more explosive and requires a higher level of safety design.

[0008] Prior art literature

[0009] Patent Literature

[0010] (Patent Document 1) Korean Patent Publication No. 10-2022-0010865 (January 27, 2022) Summary of the invention

[0011] Problem that the invention aims to solve

[0012] An object of the present invention is to provide an outdoor unit of an air conditioner that can block refrigerant from approaching a control box due to refrigerant leakage.

[0013] Another object of the present invention is to provide an outdoor unit of an air conditioner having a control box that can be airtight inside.

[0014] Another object of the present invention is to provide an outdoor unit of an air conditioner having a control box that facilitates heat dissipation of internal components.

[0015] Still another object of the present invention is to provide an outdoor unit of an air conditioner capable of forcibly flowing air without providing a fan inside a control box and cooling components by the air.

[0016] Still another object of the present invention is to provide an outdoor unit of an air conditioner capable of effectively cooling heat-generating components of a control box by optimizing an air flow path inside the control box.

[0017] Still another object of the present invention is to provide an outdoor unit of an air conditioner that can improve heat dissipation performance while maximally securing an installation space for installing electronic equipment components.

[0018] Still another object of the present invention is to provide an outdoor unit of an air conditioner capable of preventing external rainwater or condensed water scattered by rotation of a fan from penetrating into an interior of a control box.

[0019] Means used to solve problems

[0020] The outdoor unit of the air conditioner according to the embodiment of the present invention may include a casing having an external air inlet formed therein.

[0021] The outdoor unit may further include a shielding member that divides the interior of the housing into a heat exchange space and an electronic equipment space.

[0022] The outdoor unit may further include a heat exchanger, and the heat exchanger is disposed in the heat exchange space.

[0023] The outdoor unit may further include a fan, and the fan is disposed in the heat exchange space.

[0024] The outdoor unit may further include a compressor, and the compressor is disposed in the electronic equipment space.

[0025] The outdoor unit may further include a control box assembly, and the control box assembly is disposed in the electronic equipment space.

[0026] The control box assembly may include a control box connected to the external gas inlet and having electronic equipment components disposed therein.

[0027] The control box assembly may further include a heat dissipation pipe connected to the interior of the control box and extending from one side of the control box to the shielding member.

[0028] The air flowing in through the external air inlet may be discharged into the heat exchange space after passing through the control box and the heat dissipation duct.

[0029] The control box may include a housing inlet for allowing air to flow in and a housing outlet for allowing air to be exhausted.

[0030] The external air inlet and the housing inlet may be connected by an air pipe.

[0031] The control box may include a box housing, the box housing forming a receiving space for receiving the electronic equipment components, and one side of the box housing is open.

[0032] The control box may further include a box cover coupled to an open side of the box housing.

[0033] The casing inlet and the casing outlet may be formed in the tank casing.

[0034] The box housing may include a bottom surface portion forming a bottom surface.

[0035] The box housing may further include side surfaces forming two side surfaces.

[0036] The box housing may further include a top surface portion forming a top surface.

[0037] The box housing may further include a rear surface portion forming a rear surface.

[0038] The front side of the box housing may be open.

[0039] A rear surface portion of the box housing may face the shielding member.

[0040] The housing inlet may be formed on a bottom surface portion of the box housing.

[0041] The casing outflow port may be formed at a rear surface portion of the box casing.

[0042] The control box may further include a first printed circuit board module disposed at a rear portion of the box housing.

[0043] The control box may further include a second printed circuit board module spaced apart toward the front of the first printed circuit board module.

[0044] The first printed circuit board module may include high heat generating components.

[0045] The second printed circuit board module may include low heat generating components.

[0046] The heat dissipation duct may be combined with a rear portion of the box housing and connected to the housing outlet.

[0047] The heat dissipation pipe may include a pipe shell, at least one side of which is open.

[0048] The heat dissipation pipe may further include a pipe cover, wherein the pipe cover is combined with an open side of the pipe housing.

[0049] The duct housing may include a duct outflow port that discharges air flowing into the interior of the duct housing to the outside.

[0050] The duct housing may include a bottom surface portion forming a bottom surface.

[0051] The duct housing may further include side surfaces forming two side surfaces.

[0052] The duct housing may further include a back surface portion forming a back surface.

[0053] The front surface and the top surface of the duct housing may be open.

[0054] The duct outlet may be formed at a rear portion of the duct housing.

[0055] The open front side of the duct housing may be covered by the rear side of the tank housing.

[0056] The open top surface of the duct housing may be covered by the duct cover.

[0057] The heat dissipation duct may further include a reactor module disposed inside the duct housing.

[0058] The width or flow cross-sectional area of ​​the duct housing may be smaller than the width or flow cross-sectional area of ​​the tank housing.

[0059] A heat dissipation cover may also be included, wherein the heat dissipation cover is connected to one side of the heat dissipation pipe and guides the air passing through the heat dissipation pipe to the heat exchange space.

[0060] The heat dissipation cover may include a cover outflow port configured to discharge air flowing into the heat dissipation cover toward the heat exchange space.

[0061] The cap outflow port may be arranged at a lower side than the duct outflow port.

[0062] The heat dissipation cover may include a bottom surface portion forming a bottom surface.

[0063] The heat dissipation cover may further include side surface portions forming two side surfaces.

[0064] The heat dissipation cover may further include a top surface portion forming a top surface.

[0065] The heat dissipation cover may further include a back surface portion forming a back surface.

[0066] The front side of the heat dissipation cover may be open.

[0067] The side surface portion of the heat dissipation cover may be coupled to a side surface portion of the heat dissipation pipe adjacent to a back surface portion of the heat dissipation pipe.

[0068] The cover outflow port may be formed in at least one of a back surface portion and a bottom surface portion of the heat dissipation cover.

[0069] The outdoor unit of the air conditioner according to the embodiment of the present invention may include a casing having an external air inlet formed therein.

[0070] The outdoor unit may further include a shielding member that divides the interior of the housing into a heat exchange space and an electronic equipment space.

[0071] The outdoor unit may further include a heat exchanger, and the heat exchanger is disposed in the heat exchange space.

[0072] The outdoor unit may further include a fan, and the fan is disposed in the heat exchange space.

[0073] The outdoor unit may further include a compressor, and the compressor is disposed in the electronic equipment space.

[0074] The outdoor unit may further include a control box assembly, and the control box assembly is disposed at a position of the electronic equipment space corresponding to an upper side of the compressor.

[0075] The control box assembly may include a control box connected to the external air inlet via an air pipe, and electronic equipment components are arranged inside the control box.

[0076] The control box assembly may further include a heat dissipation pipe connected to the interior of the control box and extending from one side of the control box to the shielding member.

[0077] The control box assembly may further include a heat dissipation cover connected to an end of the heat dissipation pipe to guide the internal air of the heat dissipation pipe to the heat exchange space.

[0078] The housing may include a bottom plate forming a bottom surface of the outdoor unit.

[0079] The housing may further include a front plate standing upright at a front end portion of the bottom plate.

[0080] The housing may further include a side plate, wherein the side plate stands upright on the side of the bottom plate.

[0081] The housing may further include a back cover, which stands upright at the rear end of the bottom plate and defines the back side of the electronic device space.

[0082] The external air inlet may be formed in the rear cover.

[0083] The control box may include a housing inlet for allowing air to flow in.

[0084] The control box may further include a housing flow outlet for exhausting air.

[0085] The external air inlet and the housing inlet may be connected by the air pipe.

[0086] The casing inlet may be arranged above the external air inlet.

[0087] The casing inlet port may be disposed below the casing outlet port.

[0088] Effects of the Invention

[0089] The outdoor unit of the air conditioner according to the embodiment of the present invention having the above-mentioned structure has the following effects.

[0090] First, since the interior of the control box is a sealed structure, it has the effect of preventing the refrigerant from approaching the control box due to refrigerant leakage.

[0091] Second, since the air sucked in through the external air inlet passes through the interior of the control box and is discharged toward the fan side, it has the effect of rapidly cooling the heat-generating components by air cooling.

[0092] In particular, as the casing inlet and the casing outlet of the control box are spaced as far apart as possible, the air flow path for cooling the components can be formed relatively long, thereby improving the heat dissipation performance of the heat generating components.

[0093] In addition, since the width or flow cross-sectional area of ​​the heat dissipation pipe is smaller than the width or flow cross-sectional area of ​​the control box, the flow rate of the air can be increased and cooling can be performed more quickly.

[0094] Third, since the high-heat-generating components are arranged adjacent to the outer shell outlet and the low-heat-generating components are arranged relatively apart from the outer shell outlet inside the control box, it is possible to effectively cool the heat-generating components and ensure component installation space.

[0095] Fourthly, since the heat dissipation cover is provided at the end of the heat dissipation duct, it is possible to prevent external rainwater or condensed water scattered by the rotation of the fan from penetrating into the interior of the control box.

[0096] Fifth, since the air can be forced to flow and form a cooling flow path by using the pressure difference without providing an additional fan inside the control box, it has the effect of reducing product costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0097] Figure 1 It is a front perspective view of an outdoor unit of an air conditioner according to an embodiment of the present invention.

[0098] Figure 2 It is a front perspective view of the outdoor unit with the casing removed.

[0099] Figure 3 It is a front stereoscopic view of a control box assembly according to an embodiment of the present invention.

[0100] Figure 4 It is a front perspective view of the control box assembly with the box cover and the duct cover separated.

[0101] Figure 5 It is a front perspective view of the control box in a state where the second printed circuit board module is separated.

[0102] Figure 6 It is a front view of the control box in a state where the second printed circuit board module is separated.

[0103] Figure 7 It is an exploded perspective view showing a state where a control box, a heat dissipation duct, and a heat dissipation cover are separated.

[0104] Figure 8 It is a front perspective view showing the heat dissipation duct in a state where the reactor bracket is separated.

[0105] Fig. 9 A perspective view of a control box assembly for overall display of air flow paths for cooling components.

[0106] Fig.10 This is a front view of the control box used to show the air flow path for cooling components. DETAILED DESCRIPTION

[0107] Hereinafter, some embodiments of the present invention are described in detail through exemplary drawings. It should be noted that when assigning reference symbols to the constituent elements of the drawings, the same symbols are assigned to the same constituent elements as much as possible even if they are shown in different drawings. In addition, in the process of describing the embodiments of the present invention, when it is determined that the specific description of the relevant known structure or function will hinder the understanding of the embodiments of the present invention, the detailed description thereof is omitted.

[0108] Figure 1 is a front perspective view of an outdoor unit of an air conditioner according to an embodiment of the present invention, Figure 2This is a front perspective view of the outdoor unit with the casing removed.

[0109] Reference Figure 1 and Figure 2 The outdoor unit 10 of the air conditioner according to the embodiment of the present invention includes a casing forming the appearance of the outdoor unit.

[0110] The housing may include: a bottom plate 11 forming the bottom surface of the outdoor unit 10 ; a first front plate 12 standing upright on one side of the front end of the bottom plate 11 ; and a second front plate 13 standing upright on the other side of the front end of the bottom plate 11 .

[0111] The housing may further include: a side plate 14 standing upright on the side of the bottom plate 11 ; and a top plate 15 forming a top surface of the outdoor unit 10 .

[0112] The outdoor unit 10 may further include: an orifice 16 coupled to the first front plate 12 ; a fan 17 disposed behind the orifice 16 ; and a heat exchanger 18 erected on the top surface of the bottom plate 11 .

[0113] The outdoor unit 10 may further include a shielding member 19 erected on the top surface of the bottom plate 11 .

[0114] The shielding member 19 can divide the upper space of the bottom plate 11 into a heat exchange space 10a on the left and an electronic equipment space 10b on the right. The heat exchanger 18 can be disposed in the heat exchange space 10a. The heat exchanger 18 can be bent and extended along the side end and the rear end of the bottom plate 11, and define the side and back sides of the heat exchange space 10a.

[0115] One end of the first front plate 12 may be combined with the front end of the heat exchanger 18, and the other end may be combined with the front end of the shield 19. The rear end of the shield 19 may be connected to the side end of the heat exchanger 18.

[0116] The outdoor unit 10 may further include a compressor 20 and a heat storage tank 21 erected on the top surface of the bottom plate 11 corresponding to the electronic equipment space 10 b .

[0117] The heat storage tank 21 may be disposed at a position separated from the compressor 20. A flow path is provided inside the heat storage tank 21 so that the refrigerant and water can exchange heat without mixing. A refrigerant flow path and a water flow path are arranged inside the heat storage tank 21 so that heat exchange can be performed, and heat can be transferred from the refrigerant flowing along the refrigerant flow path to the water flowing along the water flow path.

[0118] The refrigerant passing through the compressor 20 may flow into the heat storage tank 21 along the refrigerant pipe. The heat storage tank 21 may be connected to a water pipe unit connected to the water flow path.

[0119] The refrigerant that has passed through the heat storage tank 21 may be guided to the heat exchanger 18 along the refrigerant pipe. The refrigerant that has passed through the heat exchanger 18 may be guided to the heat exchanger of the indoor unit after passing through the expansion valve. The refrigerant that has passed through the indoor unit may be recovered to the compressor 20 after passing through the gas-liquid separator.

[0120] When the fan 17 rotates, outdoor air may flow into the outdoor unit 10 through short sides of the heat exchanger 18 forming a side surface of the outdoor unit 10 and long sides of the heat exchanger 18 forming a back surface of the outdoor unit 10 .

[0121] The air passing through the heat exchanger 18 may flow from the back side to the front side of the fan 17 , and after passing through the chamber 16 , may be exhausted to the outside of the outdoor unit 10 .

[0122] A portion of the plurality of blades constituting the fan 17 may be accommodated inside the cavity 16 , so that all air forced to flow by the fan 17 passes through the cavity 16 .

[0123] The outdoor unit 10 may further include a control box assembly 100 accommodated in the electronic equipment space 10b. The control box assembly 100 may be disposed in the upper space of the compressor 20. The control box assembly 100 may be disposed in the upper space of the heat storage tank 21. The control box assembly 100 will be described in detail later with reference to the accompanying drawings.

[0124] The housing may further include a back cover defining the back side of the electronic device space 10b. The housing may further include a support plate 22 standing upright in front of the back cover.

[0125] The rear cover may be formed with an external air inlet for allowing outdoor air of the outdoor unit 10 to flow in. The external air inlet may be formed at a position of the rear cover corresponding to the lower side of the control box assembly 100 .

[0126] The support plate 22 may be coupled to a connector 24 of an air pipe 23 that guides air flowing in through the external air inlet to the control box assembly 100 .

[0127] The air pipe 23 can connect the connector 24 and the control box assembly 100 to allow the outside and the inside of the control box assembly 100 to communicate with each other.

[0128] The air pipe 23 may be formed of a soft material and may connect the external air inlet and the air inlet of the control box assembly 100 .

[0129] When the fan 17 rotates, the internal pressure of the outdoor unit 10 is lower than the external pressure. Then, the outdoor air flows into the interior of the outdoor unit 10 through the external air inlet. The outdoor air sucked in through the external air inlet can flow into the control box assembly 100 along the air pipe 23 and then be discharged to the heat exchange space 10a.

[0130] During this process, the heat generating components disposed inside the control box assembly 100 can be quickly cooled by air cooling. The air exhausted to the heat exchange space 10a can be exhausted to the outside of the outdoor unit 10 after merging with the air forced to flow by the fan 17 .

[0131] The outdoor unit 10 may further include a supporting bracket 25 supporting the control box assembly 100 .

[0132] The support bracket 25 may stand upright on the top surface of the bottom plate 11 and support the lower side of the control box assembly 100. A plurality of support brackets 25 may be provided and support the bottom surface of the control box assembly 100 respectively.

[0133] One side of the control box assembly 100 may be combined with the rear cover, and the other side thereof may be combined with the shielding member 19 .

[0134] Figure 3 is a front perspective view of a control box assembly according to an embodiment of the present invention, Figure 4 It is a front perspective view of the control box assembly with the box cover and the duct cover separated.

[0135] Figure 5 is a front perspective view of the control box in a state where the second printed circuit board module is separated, Figure 6 It is a front view of the control box in a state where the second printed circuit board module is separated.

[0136] Figure 7 is an exploded perspective view showing the state of separating the control box, the heat dissipation pipe and the heat dissipation cover, Figure 8 It is a perspective view showing the heat dissipation duct in a state where the reactor bracket is separated.

[0137] Reference Figures 3 to 8 The control box assembly 100 of the embodiment of the present invention may include a control box 110. The control box assembly 100 may further include a heat dissipation pipe 120. The control box assembly 100 may further include a heat dissipation cover 130.

[0138] The control box 110, the heat dissipation pipe 120, and the heat dissipation cover 130 may be combined and fixed to each other. The heat dissipation pipe 120 may be disposed between the control box 110 and the heat dissipation cover 130. The control box 110 may be combined in front of the heat dissipation pipe 120, and the heat dissipation cover 130 may be combined in the rear of the heat dissipation pipe 120.

[0139] The control box 110 may be disposed in an upper space of the heat storage tank 21 .

[0140] The heat dissipation pipe 120 may be disposed in an upper space of the compressor 20 .

[0141] The heat dissipation cover 130 may be disposed at a position of the heat exchange space 10 a corresponding to an upper space of the fan 17 .

[0142] The control box 110 may include: a box housing 111 accommodating electronic equipment components; and a box cover 112 coupled to one side of the box housing 111 .

[0143] The box housing 111 may have a hexahedral shape with an open front. A receiving space 111a for receiving electronic equipment components may be formed inside the box housing 111. However, the present invention is not limited thereto, and the box housing 111 may be formed in a polyhedral shape. The box housing 111 may be formed of a metal material.

[0144] The box housing 111 may include a bottom portion forming a bottom surface, side portions forming two side surfaces, a top portion forming a top surface, and a back portion forming a back surface. The front surface of the box housing 111 is open, and electronic equipment components can be placed through the open front surface.

[0145] The box housing 111 may include a housing inlet 111 b for allowing the air sucked in through the air pipe 23 to flow in, and a housing outlet 111 c for allowing the air inside the box housing 111 to be discharged to the outside.

[0146] The housing inlet 111b may be arranged at a higher position than the external air inlet. The housing inlet 111b may be arranged at a lower position than the housing outlet 111c. Therefore, the air sucked in through the external air inlet may move upward inside the box housing 111.

[0147] The casing inlet 111b may be formed on the bottom surface of the tank casing 111. As an example, the casing inlet 111b may be formed on the left edge of the bottom surface of the tank casing 111.

[0148] The housing inlet 111b may be provided with a sealing connector 111d coupled to the end of the air pipe 23. The sealing connector 111d may include a rubber bushing, a fastening nut, and a sealing nut that perform a sealing function inside. After the end of the air pipe 23 is inserted into the sealing connector 111d, the air pipe 23 and the sealing connector 111d may be sealed by tightening the fastening nut and the sealing nut.

[0149] The housing outlet 111c is connected to the inside of the heat dissipation duct 120. The housing outlet 111c may be formed at the back side of the box housing 111. As an example, the housing outlet 111c may be formed at the right edge of the back side of the box housing 111. Therefore, an air flow path for cooling components may be formed in an area adjacent to the back side of the box housing 111.

[0150] In addition, since the housing inlet 111b and the housing outlet 111c are respectively formed at one side edge and the other side edge of the box housing 111, the air flow path for cooling the components can be formed relatively long, thereby improving the heat dissipation performance for the heat generating components.

[0151] The box housing 111 may further include a wire through hole 111e through which a power supply wire passes.

[0152] The wire through hole 111e may be understood as a portion that allows wires connected to a printed circuit board disposed inside the box housing 111 to be led out to the outside. The wire through hole 111e may be formed on the bottom surface of the box housing 111.

[0153] The wire through hole 111e may be provided with a sealed connector 111f coupled to the end of the wire. Since the sealed connector 111f has the same structure as the sealed connector 111d described above, a detailed description thereof will be omitted.

[0154] The box cover 112 may be combined to cover the open front side of the box housing 111. When the box cover 112 is combined with the box housing 111, the inside of the box housing 111 may be sealed.

[0155] The control box 110 may further include a first printed circuit board module 113 disposed inside the box housing 111 .

[0156] The first printed circuit board module 113 may be understood as a portion where a heat generating component with a relatively high heat generation is installed. The first printed circuit board module 113 may be disposed on the back side of the box housing 111 .

[0157] The first printed circuit board module 113 may include: a first printed circuit board bracket 113a; an inverter printed circuit board 113b disposed on one side of the first printed circuit board bracket 113a; and a noise filter printed circuit board 113c disposed on the other side of the first printed circuit board bracket 113a.

[0158] The first PCB bracket 113a may be formed in a quadrangular plate shape. The first PCB bracket 113a may stand upright inside the box housing 111 in a manner of exposing the front side. The first PCB bracket 113a may be provided at the back side of the box housing 111 so that an air flow path for cooling components may pass through.

[0159] by Figure 6 As a reference, the inverter printed circuit board 113b may be disposed on the left side of the front side of the first printed circuit board bracket 113a, and the noise filter printed circuit board 113c may be disposed on the right side of the front side of the first printed circuit board bracket 113a.

[0160] The inverter printed circuit board 113b and the noise filter printed circuit board 113c, as heat generating components with relatively high heat generation, can be arranged at a position adjacent to the housing outlet 111c of the box housing 111. The inverter printed circuit board 113b and the noise filter printed circuit board 113c can be arranged at the back side of the box housing 111 adjacent to the housing outlet 111c.

[0161] Therefore, the inverter printed circuit board 113 b and the noise filter printed circuit board 113 c can be intensively cooled while the air flowing in from the case inlet 111 b of the box case 111 flows toward the case outlet 111 c .

[0162] The control box 110 may further include a second printed circuit board module 114 disposed inside the box housing 111 .

[0163] The second printed circuit board module 114 may be understood as a portion where a heat generating component with relatively less heat is installed. The second printed circuit board module 114 may be disposed on a side surface or a top surface of the box housing 111 .

[0164] The second PCB module 114 may include: a second PCB bracket 114a; a sub PCB 114b disposed on one side of the second PCB bracket 114a; and a main PCB 114c disposed on the other side of the second PCB bracket 114a.

[0165] The second PCB bracket 114a may be formed in a quadrangular plate shape. The second PCB bracket 114a may be arranged to be spaced apart from the front of the first PCB bracket 113a. The second PCB bracket 114a may be formed to have an area smaller than that of the first PCB bracket 113a.

[0166] The second printed circuit board bracket 114a may be disposed adjacent to the open front portion of the box housing 111, that is, the box cover 112. The second printed circuit board bracket 114a may stand upright inside the box housing 111 with the front side exposed.

[0167] The auxiliary PCB 114 b may be disposed on the left side of the front side of the second PCB bracket 114 a , and the main PCB 114 c may be disposed on the right side of the front side of the second PCB bracket 114 a .

[0168] The auxiliary printed circuit board 114b and the main printed circuit board 114c, as heat generating components with relatively low heat generation, may be arranged at a position separated from the housing outlet 111c of the housing 111. The auxiliary printed circuit board 114b and the main printed circuit board 114c may be arranged on the side of the housing cover 112 separated from the housing outlet 111c toward the front.

[0169] In summary, the first printed circuit board module 113 on which heat-generating components with relatively high heat generation are installed is arranged adjacent to the back side of the box housing 111 on which an air flow path for cooling the components is formed, thereby achieving the effect of centralized cooling of high heat-generating components.

[0170] In addition, the second printed circuit board module 114 mounted with heat generating components with relatively low heat generation is arranged adjacent to the case cover 112 side separated from the air flow path for cooling the components, thereby ensuring an installation space for installing the components.

[0171] The heat dissipation duct 120 is connected to the control box 110, and serves as a passage for guiding the air exhausted through the housing outlet 111c of the control box 110 to the heat exchange space 10a. The front end of the heat dissipation duct 120 may be connected to the back of the control box 110, and the rear end may be connected to the shielding member 19. That is, the heat dissipation duct 120 may be formed to extend from the back of the control box 110 to the shielding member 19.

[0172] The heat dissipation duct 120 may include: a duct housing 121 accommodating electronic equipment components; and a duct cover 122 coupled to one side of the duct housing 121 .

[0173] The duct housing 121 may have a hexahedral shape with an open front and top surface. A receiving space 121a for receiving electronic equipment components may be formed inside the duct housing 121. The duct housing 121 may be formed long in the front-to-back direction, the front end may be combined with the back of the control box 110, and the rear end may be combined with the shielding member 19. However, the present invention is not limited thereto, and the duct housing 121 may be formed in a polyhedral shape. The duct housing 121 may be formed of a metal material.

[0174] The duct housing 121 may include a bottom portion forming a bottom surface, side portions forming two side surfaces, and a back portion forming a back surface. The front and top surfaces of the duct housing 121 are open, and electronic equipment components can be arranged through the open front and top surfaces.

[0175] The duct housing 121 may include a housing coupling portion 121 b for coupling with the control box 110 .

[0176] The shell joint part 121b can be understood as a part for welding the duct shell 121 to the box shell 111. The shell joint part 121b can be formed by bending the front end of the duct shell 121 toward the outside. The shell joint part 121b can extend toward the outside along the front edge of the duct shell 121 and be in close contact with the back of the box shell 111.

[0177] When the duct housing 121 is combined with the back portion of the box housing 111, the open front side of the duct housing 121 may be connected to the housing outlet 111c of the box housing 111. Therefore, air flowing inside the box housing 111 may flow into the inside of the duct housing 121 through the housing outlet 111c.

[0178] The duct housing 121 may further include a duct outlet 121 c for discharging the internal air of the duct housing 121 to the outside.

[0179] The duct outlet 121c may be formed at the back of the duct housing 121. The duct outlet 121c may be formed in a plurality of discharge grids. The duct outlet 121c may be connected to the heat exchange space 10a of the outdoor unit 10 provided with the fan 17. Therefore, the air flowing inside the duct housing 121 can quickly flow into the suction side of the fan 17 through the duct outlet 121c.

[0180] The duct housing 121 may further include a cover combining portion 121 d for combining with the heat dissipation cover 130 .

[0181] The cover joint part 121d can be understood as a portion where the duct housing 121 and the heat dissipation cover 130 are fastened by a fastening member. The cover joint part 121d can be formed on both sides of the duct housing 121. The cover joint part 121d can be formed on both sides adjacent to the rear end of the duct housing 121, so that the duct housing 121 and the heat dissipation cover 130 can be easily combined.

[0182] The duct cover 122 may be combined to cover the open top surface of the duct housing 121. When the duct housing 121 is combined with the back surface of the box housing 111, the duct cover 122 is combined with the duct housing 121 to seal the interior of the duct housing 121.

[0183] The heat dissipation pipe 120 may further include a reactor module 123 disposed inside the pipe housing 121 .

[0184] The reactor module 123 may include: a reactor bracket 123 a; and a reactor 123 b disposed on the reactor bracket 123 a.

[0185] The reactor bracket 123a may be formed in a quadrangular plate shape. The reactor bracket 123a may be formed long in the front-rear direction corresponding to the shape of the duct housing 121. The reactor bracket 123a may be formed of a metal material.

[0186] The reactor bracket 123a may be placed and supported on the bottom surface of the duct housing 121. The reactor bracket 123a may be fixed by being welded to the bottom surface of the duct housing 121.

[0187] The reactor 123 b may be understood as an electronic device that stores electromagnetic energy and exhibits a large inductive reactance in response to a sharp change in current.

[0188] The reactor 123b may be provided on the top surface of the reactor bracket 123a. The reactor 123b may be fastened to the reactor bracket 123a using a fastening member.

[0189] The reactor 123 b is a heat generating component that generates relatively much heat. Therefore, the reactor 123 b can be disposed inside the duct housing 121 and cooled by air cooling.

[0190] In addition, the left-right width or air flow cross-sectional area of ​​the duct housing 121 may be smaller than the left-right width or air flow cross-sectional area of ​​the box housing 111. Therefore, the flow cross-sectional area of ​​the air flow path for cooling the components gradually becomes smaller, so that the flow rate of the air can be increased. When the flow rate of the air is increased, the reactor 123b can be cooled more quickly.

[0191] The heat dissipation cover 130 is connected to the heat dissipation pipe 120 and guides the air exhausted through the pipe outlet 121 c of the heat dissipation pipe 120 to the heat exchange space 10 a .

[0192] In addition, the heat dissipation cover 130 covers the pipe outlet 121 c of the heat dissipation pipe 120 , and plays a function of blocking moisture and impurities flowing in from the outside.

[0193] The heat dissipation cover 130 may be coupled to the back side of the heat dissipation pipe 120. The heat dissipation cover 130 may be coupled to both side surfaces and the back side of the pipe housing 121 to cover the pipe outlet 121c of the pipe housing 121.

[0194] Specifically, the heat dissipation cover 130 may be formed in a polyhedron shape with an open front side. The heat dissipation cover 130 may be formed long in the up-down direction and cover the duct outlet 121 c of the duct housing 121 .

[0195] The heat dissipation cover 130 may be disposed in the heat exchange space 10a of the outdoor unit 10. The heat dissipation cover 130 may be disposed above or to the side of the fan 17 disposed in the heat exchange space 10a. A flow space 131 may be formed inside the heat dissipation cover 130 for air to flow.

[0196] The heat dissipation cover 130 may include a bottom portion forming a bottom surface, side portions forming two side surfaces, a top portion forming a top surface, and a back portion forming a back surface. The front surface of the heat dissipation cover 130 is open, and at least a portion of the open front surface may face the duct outlet 121c of the duct housing 121. Therefore, the interior of the heat dissipation cover 130 may be connected to the interior of the duct housing 121.

[0197] At least one of the top surface, the back surface, and the bottom surface of the heat dissipation cover 130 may be formed in a stepped shape to have a gradient shape, thereby preventing rainwater from penetrating into the heat dissipation duct 120 from the outside, or preventing condensed water scattered by the rotation of the fan 17 from penetrating into the heat dissipation duct 120.

[0198] The heat dissipation cover 130 may include a cover outlet 132 for discharging the internal air of the heat dissipation cover 130 to the outside (heat exchange space).

[0199] The cover outlet 132 may be formed at one or more of the back surface and the bottom surface of the heat dissipation cover 130. However, the cover outlet 132 may be disposed at a lower position than the duct outlet 121c so that water flowing in from the outside through the cover outlet 132 does not penetrate into the inside of the heat dissipation duct 120 through the duct outlet 121c.

[0200] With such a configuration, the air discharged from the duct outlet 121 c may be turned downward inside the heat dissipation cover 130 and then discharged into the heat exchange space 10 a through the cover outlet 132 .

[0201] In addition, since the duct outlet 121 c is covered by the heat dissipation cover 130 and the cover outlet 132 is disposed at a lower position than the duct outlet 121 c , water can be prevented from penetrating through the cover outlet 132 in advance.

[0202] The heat dissipation cover 130 may further include a pipe coupling portion 133 for coupling with the heat dissipation pipe 120 .

[0203] The pipe joint part 133 can be understood as a portion where the heat dissipation cover 130 and the heat dissipation pipe 120 are fastened by a fastening member. The pipe joint part 133 can be formed on both sides of the heat dissipation cover 130. The pipe joint part 133 can be formed on both sides adjacent to the front end of the heat dissipation cover 130, so that the heat dissipation cover 130 and the heat dissipation pipe 120 can be easily combined.

[0204] Fig. 9 This is a three-dimensional view of the control box assembly for overall display of the air flow path for cooling components. Fig.10 This is a front view of the control box used to show the air flow path for cooling components.

[0205] Refer to Figure 2 , Fig. 9 as well as Fig.10 When the outdoor unit 10 of the embodiment of the present invention is in operation, the compressor 20 and the fan 17 are in operation.

[0206] The internal pressure of the outdoor unit 10 is lower than the external pressure by driving the fan 17. As a result, outdoor air flows into the air pipe 23 through the external air inlet. The air flowing in from the air pipe 23 passes through the housing inlet 111b, passes through the inside of the control box 110, and is discharged through the housing outlet 111c.

[0207] In this process, the heat generating components disposed inside the control box 110 can be quickly cooled by air cooling. In particular, by disposing the first printed circuit board module 113 having high heat generating components adjacent to the housing inlet 111b and the housing outlet 111c, the heat dissipation performance of the heat generating components can be improved.

[0208] In addition, the shell inlet 111b and the shell outlet 111c are respectively formed at one corner portion and another corner portion diagonally opposite to the one corner portion based on the back portion of the box shell 111, so that the cooling flow path can be formed as long as possible.

[0209] The air discharged to the housing outlet 111c flows into the heat dissipation duct 120 and then is discharged to the outside through the duct outlet 121c. In this process, the reactor 123b disposed inside the heat dissipation duct 120 can be cooled by air cooling.

[0210] In particular, since the left-right width or air flow cross-sectional area of ​​the duct housing 121 is smaller than the left-right width or air flow cross-sectional area of ​​the box housing 111, the flow cross-sectional area of ​​the air flow path is narrowed, so that the air flow rate can be accelerated. When the air flow rate is increased, the reactor 123b can be cooled more quickly.

[0211] The air discharged to the duct outlet 121c flows into the heat dissipation cover 130 and is then discharged to the heat exchange space 10a through the cover outlet 132. The air discharged to the heat exchange space 10a merges with the air forced to flow by the fan 17 and is then discharged to the outside (front) of the outdoor unit 10.

Claims

1. An outdoor unit of an air conditioner, characterized in that: include: The housing is formed with an external gas inlet; a shielding member, dividing the interior of the housing into a heat exchange space and an electronic equipment space; A heat exchanger is disposed in the heat exchange space; A fan, disposed in the heat exchange space; A compressor, arranged in the electronic equipment space; as well as A control box assembly, arranged in the electronic equipment space; The control box assembly comprises: A control box connected to the external gas inlet and having electronic equipment components arranged therein; as well as a heat dissipation pipe connected to the interior of the control box and extending from one side of the control box to the shielding member; The air flowing in through the external air inlet is discharged into the heat exchange space after passing through the control box and the heat dissipation duct.

2. The outdoor unit of the air conditioner according to claim 1, wherein: The control box comprises: an inlet of the housing to allow air to flow in; and Outlet of the housing to allow air to escape; The external air inlet and the housing inlet are connected by an air pipe.

3. The outdoor unit of the air conditioner according to claim 2, wherein: The control box comprises: a box housing, forming a storage space for accommodating the electronic equipment components, with one side of the box housing being open; and A box cover, combined with an open side of the box shell; The casing inlet and the casing outlet are formed in the tank casing.

4. The outdoor unit of the air conditioner according to claim 3, wherein: The box housing comprises: a bottom portion forming a bottom surface; forming side portions on two sides; a top surface portion forming a top surface; and a back portion forming a back surface; The front side of the box housing is open, and the back side of the box housing faces the shielding member.

5. The outdoor unit of the air conditioner according to claim 4, wherein: The shell inlet is formed on the bottom surface of the box shell. The casing outflow port is formed at a rear surface portion of the box casing.

6. The outdoor unit of the air conditioner according to claim 4, wherein: The control box also includes: A first printed circuit board module is disposed on the rear side of the box housing; and a second printed circuit board module spaced toward the front of the first printed circuit board module; The first printed circuit board module includes a high heat generating component, The second printed circuit board module includes low heat generating components.

7. The outdoor unit of the air conditioner according to claim 4, wherein: The heat dissipation pipe is combined with the back side of the box shell and connected with the shell outlet.

8. The outdoor unit of the air conditioner according to claim 7, wherein: The heat dissipation pipeline comprises: A duct housing having at least one side open; and a duct cover coupled to an open side of the duct housing; The duct housing includes a duct outflow port that discharges air flowing into the interior of the duct housing to the outside.

9. The outdoor unit of the air conditioner according to claim 8, wherein: The pipeline housing comprises: a bottom portion forming a bottom surface; forming side portions on both sides; and a back portion forming a back surface; The front and top surfaces of the pipeline shell are open. The duct outlet is formed at a rear surface portion of the duct housing.

10. An outdoor unit of an air conditioner, characterized in that: include: The housing is formed with an external gas inlet; a shielding member, dividing the interior of the housing into a heat exchange space and an electronic equipment space; A heat exchanger is disposed in the heat exchange space; A fan, disposed in the heat exchange space; A compressor, arranged in the electronic equipment space; as well as A control box assembly is arranged at a position of the electronic equipment space corresponding to the upper side of the compressor; The control box assembly comprises: A control box connected to the external gas inlet via an air pipe and having electronic equipment components arranged therein; a heat dissipation pipe connected to the interior of the control box and extending from one side of the control box to the shielding member; and The heat dissipation cover is connected to the end of the heat dissipation pipe and guides the internal air of the heat dissipation pipe to the heat exchange space.

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