Air Conditoner

Abstract

The present invention relates to an air conditioner. The air conditioner of the present invention comprises an outdoor unit and an indoor unit connected to the outdoor unit by a water pipe, wherein the outdoor unit comprises: a compressor for compressing a refrigerant; a first outdoor heat exchanger for heat exchange between the refrigerant discharged from the compressor and air; a second outdoor heat exchanger for heat exchange between the refrigerant discharged from the compressor and water; and a pump assembly for forming a flow of water flowing through the second outdoor heat exchanger, wherein the pump assembly comprises: a pump for forming a flow of water by rotating an impeller; a motor for rotating the impeller; and a control box disposed on one side of the motor to control the motor, wherein the control box comprises: a printed circuit board; a first housing connected to the motor; a second housing coupled to the first housing and forming a space for the printed circuit board to be disposed therein; and a heat sink fixedly disposed on one side of the second housing and comprising a plurality of heat dissipation fins protruding outwardly to dissipate heat generated from the printed circuit board.

Description

Technology Field

[0001] The present invention relates to an air conditioner, and more specifically, to an air conditioner comprising a pump that heat exchanges water and a refrigerant and forms a flow of water. Background Technology

[0002] Air conditioners for controlling the temperature of indoor spaces may utilize the flow and phase change of refrigerant. However, when refrigerant flows into the indoor space, the amount of refrigerant used increases, and there are concerns regarding refrigerant leakage.

[0003] To solve the above problem, an air conditioner that sends water, which has been heat-exchanged with refrigerant, into the indoor space through water pipes can be used.

[0004] A pump may be connected to the water piping to send water into the indoor space, and such a pump may be placed inside the outdoor unit. The pump placed inside the outdoor unit may be located in a space separated from the area where the outdoor unit fan is located. If airflow is not active in the area where the pump is located, excessive heat may be generated in the control box that operates the pump. If the heat generated in the control box cannot be quickly dissipated to the outside, problems such as pump malfunction may occur due to overheating of the pump.

[0005] Furthermore, the area where the pump is installed may be a space susceptible to moisture ingress due to surrounding water piping and the configuration of the water-refrigerant heat exchanger. In such a space, moisture can easily enter the interior of the control box, which can also cause the pump to malfunction.

[0006] European registered patent EP1701431B1 discloses that a control box mounted on a pump dissipates heat generated from a printed circuit board through a cover positioned outside the housing. Although it discloses that heat is released by forming the cover with a metal material, this does not include an effective heat dissipation structure, and problems related to moisture ingress may still exist. The problem to be solved

[0007] The problem that the present invention aims to solve is to provide an air conditioner including a pump device capable of rapidly dissipating heat generated in a control box even in areas where air flow is not active.

[0008] Another objective of the present invention is to provide an air conditioner including a pump device capable of efficiently blocking external moisture or water from entering the control box.

[0009] The problems of the present invention are not limited to those mentioned above, and other unmentioned problems will be clearly understood by those skilled in the art from the description below. means of solving the problem

[0010] To achieve the above objective, an air conditioner according to an embodiment of the present invention includes an outdoor unit and an indoor unit connected to the outdoor unit by a water pipe.

[0011] The outdoor unit comprises a compressor for compressing refrigerant, a first outdoor heat exchanger for heat exchange between the refrigerant discharged from the compressor and air, a second outdoor heat exchanger for heat exchange between the refrigerant discharged from the compressor and water, and a pump assembly for forming the flow of water flowing through the second outdoor heat exchanger.

[0012] The above pump assembly includes a pump that forms a flow of water by rotating an impeller, a motor that rotates the impeller, and a control box disposed on one side of the motor to control the motor, thereby controlling the operation of the impeller.

[0013] The above control box comprises a printed circuit board, a first housing connected to the motor, a second housing coupled to the first housing and forming a space in which the printed circuit board is placed, and a heat sink fixedly disposed on one side of the second housing and including a plurality of heat dissipation fins protruding outwardly to dissipate heat generated from the printed circuit board, thereby enabling rapid cooling of heat generated from the printed circuit board of a pump placed inside the outdoor unit through the heat dissipation fin structure of the heat sink.

[0014] In the second housing, a communication hole is formed to connect the area where the printed circuit board is placed with the area where the heat sink is placed, and the heat sink includes a heat dissipation projection that protrudes toward the printed circuit board in the area where the communication hole is formed, so that heat generated from the printed circuit board can be transferred to the heat sink through the heat dissipation projection.

[0015] The heat sink comprises a heat dissipation plate including a first surface in contact with the housing and a second surface formed in the opposite direction to the first surface, a plurality of heat dissipation fins protruding from the second surface, and a heat dissipation projection protruding from the first surface in the direction in which the printed circuit board is arranged, and the heat dissipation plate is formed to be larger than the area formed by the communication hole so that the heat sink can prevent moisture from outside the housing from penetrating into the housing.

[0016] A heat-generating element is disposed on the printed circuit board, and the heat dissipation protrusion is disposed on the lower side of the printed circuit board where the heat-generating element is disposed, so that the part of the printed circuit board where heat is mainly generated can be quickly transferred to a heat sink.

[0017] The second housing comprises a second housing plate forming the communication hole and a heat sink fixing part that protrudes from the second housing plate in the direction in which the heat sink is positioned and fixes the position of the heat sink, so that the heat sink can be stably fixed.

[0018] The heat sink fixing portion includes an extension portion extending from the outer circumference of the second housing plate in the direction in which the heat sink is positioned, and a bending portion that is bent vertically at the end of the extension portion to fix the position of the heat sink, thereby effectively blocking moisture from penetrating into the portion where the heat sink is positioned.

[0019] The above bending portion is arranged parallel to the second housing plate, the bending portion is arranged to be in contact with the second surface of the heat dissipation plate, and the second housing plate is arranged to be in contact with the first surface of the heat dissipation plate, so that moisture can be prevented from penetrating into the housing through the area where the bending portion and the second housing come into contact.

[0020] In the first housing and the second housing, a hole is formed in which a connector connected to an external wire is disposed, and in the first housing and the second housing, a sealing member is disposed between the hole and the connector to seal the space between them, thereby preventing moisture from penetrating into the housing through the portion where the connector is disposed.

[0021] The above heat sink is insert-molded into the second housing, so that the heat sink can be mounted on the housing and moisture can be prevented from penetrating into the housing through the portion where the heat sink is placed.

[0022] It further includes an insulator disposed between the printed circuit board and the heat sink.

[0023] The first housing comprises a first housing plate and a first perimeter wall that is bent vertically from the outer perimeter of the first housing plate and protrudes toward the second housing, and the second housing comprises a second housing plate on which the heat sink is disposed on one side and a second perimeter wall that extends from the outer perimeter of the second housing plate in the opposite direction to where the heat sink is disposed, and when the first housing and the second housing are combined, the end of the first perimeter wall and the end of the second perimeter wall come into contact with each other, thereby preventing moisture from penetrating into the contact area between the first housing and the second housing.

[0024] One of the first perimeter wall and the second perimeter wall has a fastening projection formed that protrudes in a direction facing each other, and the other of the first perimeter wall and the second perimeter wall has a fastening groove into which the fastening projection is inserted, thereby preventing moisture from penetrating into the part where the first housing and the second housing come into contact.

[0025] A hook protruding in the direction facing the outer surface is disposed on one of the first perimeter wall and the second perimeter wall, and a hanger having a hook hole into which the hook is inserted is disposed on the other of the first perimeter wall and the second perimeter wall, and when the hook is inserted into the hook hole, the fastening projection is inserted into the fastening groove, so that the first housing and the second housing can be stably joined.

[0026] The outdoor unit includes a partition plate that separates a heat exchange chamber in which the outdoor heat exchanger is placed from a machine room in which the compressor and the second outdoor heat exchanger are placed, and the pump is positioned inside the machine room between the compressor and the second outdoor heat exchanger so that the pump is placed in an area where air flow is not active. At this time, the control box can be rapidly cooled through the heat sink structure.

[0027] The above water pipe is extended to connect the pump and the second outdoor heat exchanger inside the outdoor unit, and the water pipe disposed inside the outdoor unit is arranged to pass between the pump and the compressor.

[0028] Specific details of other embodiments are included in the detailed description and drawings. Effects of the invention

[0029] According to the air conditioner of the present invention, one or more of the following effects are present.

[0030] First, since it has a structure that can rapidly cool the heat generated in the control box, it has the advantage of being able to rapidly cool the heat generated in the control box even if it is placed in a space where air flow is relatively small. This can improve the problem of pump malfunction caused by overheating of the control box.

[0031] Second, since it effectively blocks moisture from entering the control box, it has the advantage of improving pump device malfunction issues.

[0032] The effects of the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art from the description in the claims. Brief explanation of the drawing

[0033] FIG. 1 is a system diagram schematically illustrating the configuration of an air conditioner according to one embodiment of the present invention. FIG. 2 is a drawing for explaining a pump device placed in an outdoor unit according to an embodiment of the present invention. FIG. 3 is a perspective view of a pump device according to one embodiment of the present invention. FIG. 4 is an exploded perspective view of a control box according to one embodiment of the present invention. FIG. 5 is a rear perspective view of a first housing, a second housing, and a heat sink according to one embodiment of the present invention. FIG. 6 is a bottom view of a second housing and a heat sink according to one embodiment of the present invention. FIG. 6 is a bottom view of a second housing and a heat sink according to one embodiment of the present invention. FIG. 7 is a plan view of a second housing and a heat sink according to one embodiment of the present invention. Figure 8 is a cross-sectional view taken along X-X' of Figure 7. FIG. 9 is a drawing for explaining the arrangement of a second housing, a heat sink, and a printed circuit board according to one embodiment of the present invention. Specific details for implementing the invention

[0034] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Throughout the specification, the same reference numerals refer to the same components.

[0035] Hereinafter, the present invention will be described with reference to drawings illustrating a pump device and an air conditioner including the pump device according to embodiments of the present invention.

[0036] In FIGS. 1 and 2, an air conditioner including a pump device of the present invention is described.

[0037] The air conditioner includes an outdoor unit (10) in which a compressor (12) is placed, and an indoor unit (2) connected to the outdoor unit (10) by a water pipe. The outdoor unit (10) and the indoor unit (2) can be connected by a water pipe (32).

[0038] Inside the outdoor unit (10), there is a compressor (12) that compresses the refrigerant, a first outdoor heat exchanger (14) that exchanges heat between the compressed refrigerant and air, a second outdoor heat exchanger (16) that exchanges heat between the refrigerant and water, and a pump device (40) that forms the flow of water.

[0039] The indoor unit (2) may include a circulation path (6) through which water flowing by a pump device (40) flows, an indoor heat exchanger (4) through which water and air exchange heat, and a storage tank (not shown) for storing water flowing by the pump device (40).

[0040] Referring to FIGS. 1 and 2, the outdoor unit (10) may include a four-way valve (18) that sends the refrigerant discharged from the compressor (12) to the first outdoor heat exchanger (14) or the second outdoor heat exchanger (16), an accumulator (20) that supplies the gaseous refrigerant to the compressor (12), and an outdoor unit control box (22) that has an electrical device for controlling the operation of the compressor (12).

[0041] Referring to FIG. 2, the pump device (40) is positioned inside the outdoor unit (10). The pump device (40) is positioned between the compressor (12) and the second outdoor heat exchanger (16). At the bottom of the pump device (40), an outlet pipe (30) through which water discharged from the outdoor unit (10) flows, and an inlet pipe (28) through which water flowing in from the indoor unit (2) flows are arranged. Around the pump device (40), a water pipe (32) extending from the outlet pipe (30) or the inlet pipe (28) into the outdoor unit (1) may be arranged.

[0042] Referring to FIG. 2, the outdoor unit (10) is provided with an outdoor unit fan (24) that forms air flow to the first outdoor heat exchanger (14), and a partition plate (26) that separates the area where the outdoor unit fan (24) is placed from the area where the compressor (12) is placed. The interior of the outdoor unit (10) may be divided into a heat exchange chamber (10a) where the outdoor unit fan (24) and the first outdoor heat exchanger (14) are placed, and a machine room (10b) where the compressor (12) and the pump device (40) are placed. The machine room (10b) is not affected by the outdoor unit fan (24), so the air flow inside may not be relatively active.

[0043] The pump device (40) is positioned between the water pipe (32) and the second outdoor heat exchanger (16). The heat dissipation plate (100) included in the control box (60) of the pump device (40), which will be described below, may be positioned closer to the water pipe (32) than to the second outdoor heat exchanger (16). The pump device (40) may be positioned to face the water pipe (32). However, according to the embodiment, the heat dissipation plate (100) included in the control box (60) may also be positioned to face the second outdoor heat exchanger (16) or to face upward.

[0044] Hereinafter, the pump device (40) will be described with reference to FIGS. 3 to 9.

[0045] The pump device (40) includes a pump (42) that forms a flow of water by the rotation of an impeller (not shown) disposed inside, a motor (50) disposed on one side of the pump (42) that rotates the impeller (not shown), and a control box (60) disposed on one side of the motor (50) and having an electrical component that controls the motor (50).

[0046] The pump (42) includes a pump housing (44) that forms the outer shape, and an impeller (not shown) may be disposed inside the pump housing (44). An inlet pipe (46) through which water flows in and an outlet pipe (48) through which water flows out may be disposed in the pump housing (44). The impeller disposed inside the pump housing (44) is connected to a motor (50). The motor (50) can rotate the impeller to form a flow of water.

[0047] The motor (50) can be operated by a printed circuit board (62) of a control box (60) placed on one side of the motor (50).

[0048] The control box (60) includes a printed circuit board (62), a housing (66) forming a space in which the printed circuit board (62) is placed, and a heat sink (100) disposed on one side of the housing (66) to dissipate heat generated from the printed circuit board (62). The heat sink (100) may be fixedly disposed on one side of the housing (66). The heat sink (100) may be inserted and disposed on one side of the housing (66) to block the gap between the internal space and the external space of the housing (66).

[0049] A printed circuit board (62) is placed in a second housing (80) to be described below. A plurality of electronic elements are arranged on the printed circuit board (62) on the side facing the first housing (72) to be described below. A heating element (64) spaced apart from each other may be arranged on the printed circuit board (62) on the side facing the first housing (72).

[0050] The heat sink (100) and the housing (66) can be joined by an insert injection molding method. The heat sink (100) can be fixed to the housing (66) by injecting the housing (66) while the heat sink (100) is inserted. Thus, the heat sink (100) can release heat generated from the printed circuit board (62) inside the housing (66) to the outside, while simultaneously preventing moisture that may enter from the outside from entering the housing (66).

[0051] In the housing (66), a first hole (66a) is formed in which a first connector (68a) connected to an external wire is disposed, and a second hole (66b) is formed in which a second connector (68b) connected to another external wire is disposed. The first hole (66a) and the second hole (66b) can be formed when the first housing (72) and the second housing (80) are combined. In the housing (66), a first sealing member (70a) that seals the space between the first hole (66a) and the first connector (68a) can be disposed. In the housing (66), a second sealing member (70b) that seals the space between the second hole (66b) and the second connector (68b) can be disposed. The first sealing member (70a) and the second sealing member (70b) may have a ring shape disposed on the circumference surface of each of the first connector (68a) and the second connector (68b).

[0052] The housing (66) includes a first housing (72) connected to the motor (50), and a second housing (80) connected to the first housing (72) and forming a space in which a printed circuit board (62) is placed inside.

[0053] The first housing (72) has a motor hole (74a) formed in communication with the motor (50), and a fastening hole (74b) formed around the motor hole (74a) into which a fastening member (not shown) that is fastened to the motor (50) is inserted. The fastening hole (74b) is formed around the motor hole (74a).

[0054] The first housing (72) includes a first housing plate (74) forming a motor hole (74a) and a first perimeter wall (76) that is bent vertically from the outer perimeter of the first housing plate (74) and protrudes toward the second housing (80). The first housing (72) includes a hanger (78) that maintains a fastened state with the second housing (80). The hanger (78) is positioned to protrude from the first perimeter wall (76) toward the second housing (80). A hook groove (78a) is formed in the hanger (78) to which a hook (89), which is positioned on the second perimeter wall (86) to be described below, is caught. The hook groove (78a) is formed in a direction perpendicular to the first perimeter wall (76).

[0055] The second housing (80) includes a second housing plate (82) on which a heat sink (100) is disposed on one side, and a second perimeter wall (86) extending in the opposite direction from where the heat sink (100) is disposed on the outer perimeter of the second housing plate (82). Additionally, referring to FIG. 5, the second housing (80) includes a fastening part (81) on which a fastening member (not shown) is mounted to be fixed to the first housing (72), and a heat sink fixing part (90) that protrudes in the direction in which the heat sink (100) is disposed on the outer perimeter of the second housing plate (82) and fixes the placement of the heat sink (100).

[0056] A fastening projection (88) is formed on at least one of the first housing (72) and the second housing (80), and a fastening groove (not shown) is formed on the other. Referring to FIG. 8, a fastening projection (88) is formed on the second housing (80) and protrudes toward the first housing (72). The fastening projection (88) protrudes toward the first housing (72) from the end of the second perimeter wall (86) of the second housing (80). A fastening groove (not shown) is formed at the end of the first perimeter wall (76) of the first housing (72) so that the fastening projection (88) can be inserted. The fastening groove may have a shape corresponding to the fastening projection (88).

[0057] Unlike the drawing, it is also possible to form a fastening projection on the first housing (72) and a fastening groove on the second housing (80). When the first housing (72) and the second housing (80) are combined, the first perimeter wall (76) and the second perimeter wall (86) come into contact. When the first perimeter wall (76) and the second perimeter wall (86) come into contact, the fastening projection (88) is inserted into the fastening groove, thereby preventing external moisture from entering the housing (66).

[0058] A hook (89) protruding in the direction facing the outer surface is disposed on the outer surface of the second perimeter wall (86) of the second housing (80). The hook (89) may be formed to a size corresponding to the hook groove (78a) formed in the hanger (78). When the hook (89) is inserted into the hook groove (78a), the first housing (72) and the second housing (80) can be maintained in a connected state. When the connecting projection (88) is inserted into the connecting groove, the hook (89) is inserted into the hook groove (78a), thereby maintaining the connected state of the first housing (72) and the second housing (80). Additionally, moisture from the outside can be prevented from entering the housing.

[0059] In the second housing plate (82), a communication hole (82a) is formed to communicate the inside and outside of the second housing (80) in the area where the heat sink (100) is placed. The heat sink (100), which will be described below, is placed in the communication hole (82a).

[0060] The communication hole (82a) is formed in the area where the heat dissipation protrusion (106) of the heat sink (100), which will be described below, is placed. Accordingly, the heat dissipation protrusion (106) protruding into the housing (66) from the communication hole (82a) can come into contact with the printed circuit board (62). Here, the heat dissipation protrusion (106) protruding from the heat sink (100) can come into direct contact with the printed circuit board (62) or come into indirect contact through the insulator (96).

[0061] On the inner surface of the second housing plate (82), an inner projection (84) is disposed to separate the printed circuit board (62) from the second housing plate (82). The height (106L) of the heat dissipation projection (106) protruding from the heat dissipation plate (102) is formed to be longer than the height (84L) of the inner projection (84) protruding from the second housing plate (82). The height (106L) of the heat dissipation projection (106) protruding from the heat dissipation plate (102) may be formed to be equal to or smaller than the sum of the thickness (82t) of the second housing plate (82) and the height (84L) of the inner projection (84) (82t+84L).

[0062] Referring to FIG. 8, the heat sink fixing part (90) has a shape in which the end of the heat sink plate (102) of the heat sink (100), which will be described below, can be inserted and fixed. The heat sink fixing part (90) includes an extension part (92) that extends from the outer circumference of the second housing plate (82) in the direction in which the heat sink (100) is placed, and a bending part (94) that is bent vertically at the end of the extension part (92) to fix the placement of the heat sink (100). The bending part (94) is arranged parallel to the second housing plate (82). The heat sink (100) can be placed between the bending part (94) and the second housing plate (82).

[0063] The heat dissipation plate (100) includes a heat dissipation plate (102) disposed on one side of the second housing plate (82), a plurality of heat dissipation fins (104) protruding from one side of the heat dissipation plate (102), and a heat dissipation projection (106) protruding from the other side of the heat dissipation plate (102) in the direction in which the printed circuit board (62) is disposed.

[0064] Referring to FIG. 8, the heat dissipation plate (102) includes a first surface (102a) facing the printed circuit board (62) and a second surface (102b) opposite to the first surface (102a). A heat dissipation protrusion (106) is disposed on the first surface (102a) of the heat dissipation plate (102). A plurality of heat dissipation fins (104) are disposed on the second surface (102b) of the heat dissipation plate (102). The height (104L) of the heat dissipation fins (104) protruding from the heat dissipation plate (102) is formed to be longer than the height (106L) of the heat dissipation protrusion (106) protruding from the heat dissipation plate (102).

[0065] The heat sink (100) is formed with a size larger than the communication hole (82a) formed in the second housing plate (82). The heat sink (100) can be formed with a size that can cover the entire communication hole (82a). Accordingly, the heat sink plate (102) can have an area larger than the communication hole (82a).

[0066] The heat dissipation plate (102) is positioned between the second housing plate (82) and the bending portion (94). The heat dissipation plate (102) can be positioned to be in contact with each of the second housing plate (82) and the bending portion (94). That is, the heat dissipation plate (102) is positioned to cover the communication hole (82a) formed in the second housing plate (82), thereby preventing external moisture from flowing into the housing (66) through the communication hole (82a).

[0067] Referring to FIG. 9, the control box (60) may include an insulator (96) disposed between the printed circuit board (62) and the heat sink (100). The insulator (96) is disposed between the printed circuit board (62) and the heat sink (100). The insulator (96) is disposed on one side of the printed circuit board (62). The insulator (96) is disposed on one side of the printed circuit board (62) to prevent electricity generated from the printed circuit board (62) from being transmitted to the outside.

[0068] Although preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above. Various modifications are possible by those skilled in the art without departing from the essence of the invention as claimed in the patent claims, and such modifications should not be understood individually from the technical spirit or perspective of the present invention. Explanation of the symbols

[0069] 2 : Indoor unit 4 : Indoor heat exchanger 10: Outdoor unit 12: Compressor 14: 1st outdoor heat exchanger 16: 2nd outdoor heat exchanger 24 : Outdoor unit fan 26 : Partition plate 32 : Water pipe 40 : Pump device 42 : Pump 50 : Motor 60 : Control box 62 : Printed circuit board 62 : Heating element 66 : Housing 70a : First sealing member 70b : Second sealing member 72 : 1st housing 74 : 1st housing plate 74a : Motor Hall 76 : First Perimeter Wall 78 : Hanger 80 : Second housing 82 : Second housing plate 82a : Chimney hole 84: Inner projection 86: Second circumferential wall 88 : Fastening projection 89 : Hook 90 : Heat sink fixing part 92 : Extension part 94 : Banding part 96 : Insulator 100 : Heat sink 102 : Heat dissipation plate 104 : Heat dissipation fin 106 : Heat dissipation protrusion

Claims

Claim 1 An air conditioner comprising an outdoor unit and an indoor unit connected to the outdoor unit by a water pipe, wherein the outdoor unit comprises: a compressor for compressing a refrigerant; a first outdoor heat exchanger for heat exchange between the refrigerant discharged from the compressor and air; a second outdoor heat exchanger for heat exchange between the refrigerant discharged from the compressor and water; and a pump assembly for forming a flow of water flowing through the second outdoor heat exchanger, wherein the pump assembly comprises: a pump for forming a flow of water by rotating an impeller; a motor for rotating the impeller; and a control box disposed on one side of the motor to control the motor, wherein the control box comprises: a printed circuit board; a first housing connected to the motor; a second housing coupled to the first housing and forming a space for the printed circuit board to be disposed therein; and a heat sink fixedly disposed on one side of the second housing and comprising a plurality of heat dissipation fins protruding outwardly to dissipate heat generated from the printed circuit board, wherein the first housing and the second housing, An air conditioner having a hole formed for a connector connected to an external wire, and a sealing member disposed in the first housing and the second housing to seal the space between the hole and the connector. Claim 2 An air conditioner according to claim 1, wherein the second housing has a communication hole formed therein that connects an area where the printed circuit board is placed with an area where the heat sink is placed, and the heat sink includes a heat dissipation projection that protrudes toward the printed circuit board in the area where the communication hole is formed. Claim 3 In claim 2, the heat dissipation plate comprises: a heat dissipation plate including a first surface in contact with the second housing and a second surface formed in a direction opposite to the first surface; a plurality of heat dissipation fins protruding from the second surface; and a heat dissipation projection protruding from the first surface in a direction in which the printed circuit board is arranged, wherein the heat dissipation plate is formed to be larger than the area formed by the communication hole. Claim 4 In claim 3, a heat-generating heating element is disposed on the printed circuit board, and the heat dissipation protrusion is an air conditioner disposed on the lower side of the printed circuit board where the heating element is disposed. Claim 5 In claim 3, the air conditioner comprises a second housing plate forming the communication hole and a heat sink fixing part that protrudes from the second housing plate in the direction in which the heat sink is disposed and fixes the placement of the heat sink. Claim 6 In claim 5, the heat sink fixing portion comprises an extension portion extending from the outer circumference of the second housing plate in the direction in which the heat sink is arranged, and a bending portion that is bent vertically at the end of the extension portion to fix the arrangement of the heat sink. Claim 7 An air conditioner according to claim 6, wherein the bending portion is arranged parallel to the second housing plate, the bending portion is arranged in contact with the second surface of the heat dissipation plate, and the second housing plate is arranged in contact with the first surface of the heat dissipation plate. Claim 8 delete Claim 9 In claim 1, the heat sink is an air conditioner that is insert-molded into the second housing. Claim 10 An air conditioner according to claim 1, further comprising an insulator disposed between the printed circuit board and the heat sink. Claim 11 In claim 1, the first housing comprises a first housing plate and a first perimeter wall that is bent vertically from the outer perimeter of the first housing plate and protrudes toward the second housing, and the second housing comprises a second housing plate on which the heat sink is disposed on one side and a second perimeter wall that extends from the outer perimeter of the second housing plate in the opposite direction to where the heat sink is disposed, and when the first housing and the second housing are combined, the end of the first perimeter wall and the end of the second perimeter wall come into contact with each other. Claim 12 An air conditioner according to claim 11, wherein one of the first perimeter wall and the second perimeter wall has a fastening projection formed that protrudes in a direction facing each other, and the other of the first perimeter wall and the second perimeter wall has a fastening groove into which the fastening projection is inserted. Claim 13 In claim 12, a hook protruding in the direction facing the outer surface is disposed on one of the first perimeter wall and the second perimeter wall, and a hanger having a hook hole into which the hook is inserted is disposed on the other of the first perimeter wall and the second perimeter wall, and when the hook is inserted into the hook hole, the fastening projection is inserted into the fastening groove of the air conditioner. Claim 14 In claim 1, the outdoor unit comprises a partition plate that partitions a heat exchange chamber in which the first outdoor heat exchanger is disposed and a machine room in which the compressor and the second outdoor heat exchanger are disposed, and the pump is an air conditioner disposed between the compressor and the second outdoor heat exchanger inside the machine room. Claim 15 In claim 14, the water pipe is extended to connect the pump and the second outdoor heat exchanger inside the outdoor unit, and the water pipe disposed inside the outdoor unit is disposed to pass between the pump and the compressor.

Images