Constituent unit of air conditioning device and air conditioning device

Abstract

Refrigerant tubes (102, 152) connected to the diverter (101, 151) have first tubes (110, 160) formed of aluminum or an aluminum alloy and second tubes (120, 170) formed of copper or a copper alloy. The first connection end (111, 161) of the first tube (110, 160) is connected to the second connection end (121, 171) of the second tube (120, 170). The cover members (105, 155) are disposed in the through-holes (38a, 38b) so as to straddle the inner space (S1) and the outer space (S2) of the housing (35). A first portion (140, 190) of the refrigerant tubes (102, 152) is covered by a cover member (105, 155), the first portion (140, 190) including a first connection end (111, 161) of the first tube (110, 160) and a second connection end (121, 171) of the second tube (120, 170).

Description

Technical Field

[0001] The present disclosure relates to a component unit constituting an air conditioning device and the air conditioning device. Background Art

[0002] In the components of the air conditioner, the pipes through which the refrigerant flows may contain a mixture of parts made of aluminum or aluminum alloy (aluminum tube parts) and parts made of copper or copper alloy (copper tube parts). The ionization tendency of aluminum is higher than that of copper. Therefore, when condensed water containing copper ions generated on the surface of the copper tube part adheres to the aluminum tube part, the aluminum tube part may be corroded.

[0003] In order to solve the above problems, Patent Document 1 (especially referring to Figure 2 ) discloses a structure in which a U-shaped or inverted U-shaped tube is provided between an aluminum heat transfer tube and a copper pipe in a heat exchanger. In this structure, condensed water generated on the surface of the copper pipe is blocked by the U-shaped or inverted U-shaped tube and cannot reach the aluminum heat transfer tube.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent No. 5853203 Summary of the invention

[0007] -Technical problem to be solved by the invention-

[0008] Generally, a plurality of heat transfer tubes are provided in a heat exchanger. A flow divider is connected to the heat exchanger for distributing the refrigerant to the plurality of heat transfer tubes. In addition, the refrigerant tube connected to the flow divider sometimes also has an aluminum tube portion and a copper tube portion. Here, since the heat exchanger and other components are accommodated in the shell constituting the unit, the space for arranging the refrigerant tube is limited. Therefore, it is necessary to prevent the refrigerant tube connected to the flow divider from being corroded in the limited pipe space.

[0009] An object of the present disclosure is to suppress corrosion of a refrigerant pipe connected to a flow divider in a unit constituting an air conditioner.

[0010] -Technical solutions to solve technical problems-

[0011] The first aspect is directed to the components 20 and 30 of the air conditioning device 10. The components 20 and 30 include a housing 35, a heat exchanger 65, refrigerant pipes 102 and 152, a flow divider 101 and 151, and a covering member 105 and 155. The housing 35 has through holes 38a and 38b. The heat exchanger 65 is accommodated in the housing 35 and has a plurality of heat transfer pipes 66. The refrigerant pipes 102 and 152 pass through the through holes 38a and 38b. The flow divider 101 and 151 are connected to the heat exchanger 65 and the refrigerant pipes 102 and 152 and distribute the refrigerant flowing from the refrigerant pipes 102 and 152 to the plurality of heat transfer pipes 66. The covering member 105 and 155 covers the refrigerant pipes 102 and 152. The refrigerant pipe 102, 152 includes a first pipe 110, 160 and a second pipe 120, 170, wherein the first pipe 110, 160 is connected to the flow divider 101, 151 and is formed of aluminum or an aluminum alloy, and the second pipe 120, 170 is formed of copper or a copper alloy. The first connecting end 111, 161 of the first pipe 110, 160 is directly connected to the second connecting end 121, 171 of the second pipe or is connected via a metal pipe, and the material of the metal pipe is different from the material of the first pipe 110, 160 and the second pipe 120, 170. The covering parts 105, 155 are arranged in the through holes 38a, 38b in a manner spanning the internal space S1 and the external space S2 of the shell 35, and the first parts 140, 190 of the refrigerant tubes 102, 152 are covered by the covering parts 105, 155, and the first parts 140, 190 include the first connecting ends 111, 161 of the first tubes 110, 160 and the second connecting ends 121, 171 of the second tubes.

[0012] In the first aspect, the covering member 105, 155 is arranged in the through hole 38a, 38b of the shell 35 in a manner spanning the internal space S1 and the external space S2 of the shell 35. The first portion 140, 190 of the refrigerant tube 102, 152 is covered by the covering member 105, 155. As a result, the first portion 140, 190 of the refrigerant tube 102, 152 arranged near the through hole 38a, 38b of the shell 35 is not directly in contact with the air because it is covered by the covering member 105, 155, so it is difficult to generate condensed water in the first portion 140, 190. Therefore, in this aspect, it is possible to suppress the first tube 110, 160 from being corroded due to the adhesion of condensed water containing copper ions.

[0013] In the second aspect, based on the first aspect, the constituent unit of the air-conditioning device also includes fastening components 131, 181, and the fastening components 131, 181 fasten the covering components 105, 155 to the refrigerant pipes 102, 152, and the first connecting ends 111, 161 are arranged between the fastening components 131, 181 and the first ends 105a, 155a of the covering components 105, 155 located outside the shell 35.

[0014] In the second aspect, the first connection ends 111 and 161 of the first tubes 110 and 160 are arranged between the first ends 105a and 155a of the covers 105 and 155 and the fastening members 131 and 181. Here, when condensed water generated at the portion of the refrigerant tubes 102 and 152 arranged in the housing 35 intrudes along the refrigerant tubes 102 and 152 between the covers 105 and 155 and the refrigerant tubes 102 and 152, the condensed water adheres to the second tubes 120 and 170 formed of copper or a copper alloy, and condensed water containing copper ions is generated. In this aspect, since the fastening members 131, 181 are arranged closer to the internal space S1 side of the housing 35 than the first ends 105a, 155a of the covering members 105, 155, the fastening members 131, 181 can suppress the condensed water generated on the first tubes 110, 160 in the housing 35 from intruding between the covering members 105, 155 and the refrigerant tubes 102, 152. As a result, the first tubes 110, 160 can be further suppressed from being corroded due to the adhesion of the condensed water containing copper ions.

[0015] In the third aspect, based on the first aspect, the constituent unit of the air-conditioning device also includes fastening components 132, 182, and the fastening components 132, 182 fasten the covering components 105, 155 to the refrigerant pipes 102, 152, and the second connecting ends 121, 171 are arranged between the fastening components 132, 182 and the second ends 105b, 155b of the covering components 105, 155 located inside the shell 35.

[0016] In the third aspect, the second connection ends 121 and 171 of the second tubes 120 and 170 are arranged between the second ends 105b and 155b of the covering members 105 and 155 and the fastening members 132 and 182. Here, when condensed water generated at the portion of the refrigerant tubes 102 and 152 arranged outside the housing 35 intrudes along the refrigerant tubes 102 and 152 between the covering members 105 and 155 and the refrigerant tubes 102 and 152, the condensed water adheres to the second tubes 120 and 170, generating condensed water containing copper ions. In this aspect, since the fastening members 132 and 182 are arranged on the outer space S2 side of the housing 35 relative to the second ends 105b and 155b of the covering members 105 and 155, the fastening members 132 and 182 can suppress the condensed water generated in the portion of the refrigerant tubes 102 and 152 located outside the housing 35 from intruding between the covering members 105 and 155 and the refrigerant tubes 102 and 152. As a result, the first tubes 110 and 160 can be further suppressed from being corroded due to the adhesion of the condensed water containing copper ions.

[0017] In the fourth aspect, based on the first aspect, the constituent unit of the air-conditioning device also includes a first fastening component 131, 181 and a second fastening component 132, 182, the first fastening component 131, 181 and the second fastening component 132, 182 fasten the covering component 105, 155 to the refrigerant pipe 102, 152, and the first connecting end 111, 161 and the second connecting end 121, 171 are arranged between the first fastening component 131, 181 and the second fastening component 132, 182.

[0018] In the fourth aspect, the first connection end 111, 161 and the second connection end 121, 171 are arranged between the first fastening member 131, 181 and the second fastening member 132, 182. It is possible to suppress the condensed water generated on the portions of the refrigerant tube 102, 152 located inside and outside the housing 35 from intruding between the cover member 105, 155 and the refrigerant tube 102, 152 along the refrigerant tube 102, 152. As a result, it is possible to further suppress the first tube 110, 160 from being corroded due to the adhesion of the condensed water containing copper ions.

[0019] In the fifth aspect, based on any one of the first to fourth aspects, the refrigerant pipe 102, 152 includes a laterally extended tube portion 102a, 152a, and the laterally extended tube portion 102a, 152a extends in a horizontal direction or inclines downward toward the outside of the shell 35, and the first portion 140, 190 of the refrigerant pipe 102, 152 is arranged on the laterally extended tube portion 102a, 152a.

[0020] In the fifth aspect, the first portion 140, 190 of the refrigerant tube 102, 152 is arranged on the transversely extended tube portion 102a, 152a. Therefore, the first portion 140, 190 extends in the horizontal direction or tilts downward toward the outside of the shell 35. Therefore, in this aspect, since the first tube 110, 160 is not located below the second tube 120, 170, the condensed water containing copper ions generated on the second tube 120, 170 is difficult to adhere to the first tube 110, 160. As a result, the first tube 110, 160 can be further suppressed from being corroded.

[0021] A sixth aspect relates to an air conditioning device (10), including the component unit (20, 30) according to any one of the first to fifth aspects.

[0022] In the sixth aspect, it is possible to provide the structural units (20, 30) in which the corrosion of the first pipes (110, 160) caused by the adhesion of condensed water containing copper ions is suppressed. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a piping diagram showing an air conditioning device according to an embodiment;

[0024] Figure 2 This is a three-dimensional view of the indoor unit viewed from obliquely below;

[0025] Figure 3 It is a schematic top view of the indoor unit with the top plate of the housing body omitted;

[0026] Figure 4 It shows the indoor unit Figure 3 A simplified cross-sectional view of a section taken along line IV-O-IV;

[0027] Figure 5 yes Figure 3 An enlarged view of the main part of

[0028] Figure 6 is a cross-sectional view showing the periphery of the liquid side covering member;

[0029] Figure 7 is a cross-sectional view showing the periphery of the gas-side covering member;

[0030] Figure 8 is the same as that of Modification 1 Figure 6 Quite a picture;

[0031] Fig. 9 is the same as in Modification 2 Figure 6 Quite a picture;

[0032] Fig.10 is the same as in variant 3 Figure 6 Quite a picture;

[0033] Fig.11 is the same as that of variant 4 Figure 6 Quite a picture;

[0034] Fig.12 is the same as that of variant 5 Figure 6 Quite a picture;

[0035] Fig.13 is the same as in variant 8 Figure 6 Quite a picture. DETAILED DESCRIPTION

[0036] The following is a detailed description of the embodiments of the present disclosure with reference to the accompanying drawings. It should be noted that the present disclosure is not limited to the embodiments shown below, and various changes can be made without departing from the technical concept of the present disclosure. The drawings are used to conceptually illustrate the present disclosure, so for easy understanding, the size, ratio or quantity may be exaggerated or simplified as needed.

[0037] Implementation Methods

[0038] The air conditioning device 10 according to the embodiment will be described.

[0039] - Air conditioning unit -

[0040] like Figure 1 As shown, the air conditioning apparatus 10 includes an outdoor unit 20 and an indoor unit 30. The outdoor unit 20 and the indoor unit 30 are components of the air conditioning apparatus 10.

[0041] The outdoor unit 20 and the indoor unit 30 are connected to each other via a pair of connecting pipes 12. In the air-conditioning apparatus 10, the outdoor unit 20, the indoor unit 30, and the connecting pipes 12 constitute a refrigerant circuit 11 that performs a vapor compression refrigeration cycle.

[0042] 〈Outdoor unit〉

[0043] The outdoor unit 20 is disposed outdoors and includes a compressor 21 , a four-way reversing valve 22 , an outdoor heat exchanger 23 , an outdoor fan 25 , an expansion valve 24 , a liquid-side normally closed valve 26 , and a gas-side normally closed valve 27 .

[0044] The compressor 21 is, for example, a fully enclosed scroll compressor or a fully enclosed rotary compressor. The compressor 21 sucks in a low-pressure refrigerant, compresses it, and discharges the compressed high-pressure refrigerant (high-pressure refrigerant).

[0045] The four-way reversing valve 22 is a valve for switching the flow of the refrigerant in the refrigerant circuit 11. Figure 1 The first state shown by the solid line is Figure 1The first state is a state in which the high-pressure refrigerant ejected from the compressor 21 is sent to the outdoor heat exchanger 23, and the low-pressure refrigerant flowing in from the indoor unit 30 is sent to the compressor 21. The second state is a state in which the high-pressure refrigerant ejected from the compressor 21 is sent to the indoor unit 30, and the low-pressure refrigerant passing through the outdoor heat exchanger 23 is sent to the compressor 21.

[0046] The outdoor heat exchanger 23 is a heat exchanger that exchanges heat between the refrigerant and the outdoor air. The outdoor heat exchanger 23 is, for example, a fin-tube heat exchanger. The outdoor fan 25 is a fan that supplies outdoor air to the outdoor heat exchanger 23. The expansion valve 24 is an electric expansion valve with a variable opening degree.

[0047] 〈Indoor unit〉

[0048] The indoor unit 30 is installed indoors as a target space for air conditioning. The indoor unit 30 includes an indoor heat exchanger 65 and an indoor fan 50. The indoor unit 30 will be described in detail later.

[0049] 〈Operational Action〉

[0050] The air conditioner 10 selectively performs cooling operation and heating operation.

[0051] In cooling operation, the four-way reversing valve 22 is set to the first state, and the refrigerant circulates in the refrigerant circuit 11. In the refrigerant circuit 11, the outdoor heat exchanger 23 functions as a radiator, and the indoor heat exchanger 65 functions as an evaporator. The indoor unit 30 cools the air sucked from the indoor space in the indoor heat exchanger 65, and then blows the cooled air into the indoor space.

[0052] In the heating operation, the four-way reversing valve 22 is set to the second state, and the refrigerant circulates in the refrigerant circuit 11. In the refrigerant circuit 11, the indoor heat exchanger 65 functions as a radiator, and the outdoor heat exchanger 23 functions as an evaporator. The indoor unit 30 heats the air sucked from the indoor space in the indoor heat exchanger 65, and then blows the heated air into the indoor space.

[0053] - Structure of indoor unit -

[0054] like Figure 2 As shown, the indoor unit 30 of this embodiment is a ceiling embedded indoor unit. Figure 3 and Figure 4 As shown, the indoor unit 30 includes a casing 35 , an indoor fan 50 , an indoor heat exchanger 65 , a water receiving pan 55 , and a horn-shaped component 52 .

[0055] The liquid pipe unit 100 and the gas pipe unit 150 are connected to the indoor heat exchanger 65. The indoor heat exchanger 65, the liquid pipe unit 100, and the gas pipe unit 150 constitute the heat exchanger assembly 60.

[0056] <case>

[0057] The housing 35 includes a housing body 36 and a decorative plate 40. The housing 35 accommodates an indoor fan 50, an indoor heat exchanger 65, a water receiving tray 55, and a horn-shaped member 52.

[0058] The housing body 36 is a substantially rectangular parallelepiped box-shaped member with an open lower surface. The housing body 36 includes a substantially flat plate-shaped top plate 36a and side plates 36b extending downward from the peripheral edge of the top plate 36a. The decorative plate 40 will be described later.

[0059] 〈Indoor fan〉

[0060] like Figure 4 As shown, the indoor fan 50 is a so-called turbo fan. The indoor fan 50 blows out the air sucked from below toward the radial outside. The indoor fan 50 is arranged in the center of the interior of the housing body 36. The indoor fan 50 is driven by an indoor fan motor 51. The indoor fan motor 51 is fixed to the center of the top plate 36a.

[0061] <Trumpet-shaped parts>

[0062] The trumpet-shaped member 52 is disposed below the indoor fan 50. The trumpet-shaped member 52 is a member for guiding the air flowing into the housing 35 toward the indoor fan 50. The trumpet-shaped member 52, together with the water receiving tray 55, divides the internal space of the housing 35 into a primary space 37a located on the suction side of the indoor fan 50 and a secondary space 37b located on the blowing side of the indoor fan 50.

[0063] 〈Indoor heat exchanger〉

[0064] The indoor heat exchanger 65 is a so-called transverse fin-tube heat exchanger. Figure 3 As shown, the indoor heat exchanger 65 is formed in a square cylindrical shape and is arranged to surround the indoor fan 50. The indoor heat exchanger 65 is arranged in the secondary space 37b. The indoor heat exchanger 65 exchanges heat between the air passing from the inside to the outside of the indoor heat exchanger 65 and the refrigerant in the refrigerant circuit.

[0065] 〈Water tray〉

[0066] The water receiving tray 55 is a so-called polystyrene foam component. Figure 4As shown, the water receiving pan 55 is arranged to block the lower end of the housing body 36. A water receiving groove 56 is formed on the upper surface of the water receiving pan 55 and is arranged along the lower end of the indoor heat exchanger 65. The lower end of the indoor heat exchanger 65 is inserted into the water receiving groove 56. The water receiving groove 56 receives condensed water generated in the indoor heat exchanger 65.

[0067] like Figure 3 As shown, four main blow-out passages 57 and four auxiliary blow-out passages 58 are formed on the water receiving tray 55. The main blow-out passages 57 and the auxiliary blow-out passages 58 are passages for the air that has passed through the indoor heat exchanger 65 to flow, and the main blow-out passages 57 and the auxiliary blow-out passages 58 penetrate the water receiving tray 55 in the up-down direction.

[0068] The main blow-out passage 57 is a through hole with an elongated rectangular cross section. One main blow-out passage 57 is arranged along each of the four sides of the housing body 36. The auxiliary blow-out passage 58 is a through hole with a slightly curved rectangular cross section. One auxiliary blow-out passage 58 is arranged at each of the four corners of the housing body 36.

[0069] 〈Decorative panels〉

[0070] The decorative plate 40 is a resin member formed in a square thick plate shape. The lower portion of the decorative plate 40 is formed in a square shape that is slightly larger than the top plate 36a of the housing body 36. The decorative plate 40 is arranged to cover the lower surface of the housing body 36. In addition, the lower surface of the decorative plate 40 is exposed to the indoor space.

[0071] like Figure 2 and Figure 4 As shown, a square suction port 41 is formed in the central portion of the decorative plate 40. The suction port 41 penetrates the decorative plate 40 in the up-down direction and communicates with the primary space 37a inside the housing 35. A lattice-shaped suction grille 45 is provided at the suction port 41. A filter 46 is arranged above the suction grille 45.

[0072] A substantially square ring-shaped blow-out port 44 is formed on the decorative plate 40 so as to surround the suction port 41. Figure 2 As shown, the blow-out port 44 is divided into four main blow-out openings 42 and four sub-blow-out openings 43 .

[0073] The main blow-out opening 42 is an elongated rectangular opening. A main blow-out opening 42 is arranged along each of the four sides of the decorative plate 40. The main blow-out openings 42 of the decorative plate 40 correspond to the main blow-out passages 57 of the water receiving tray 55 one by one. Each main blow-out opening 42 is connected to the corresponding main blow-out passage 57. In addition, a wind direction adjustment blade 47 is provided at each main blow-out opening 42.

[0074] The auxiliary blow-out opening 43 is a quarter-circular arc-shaped opening. An auxiliary blow-out opening 43 is arranged at each of the four corners of the decorative plate 40. The auxiliary blow-out openings 43 of the decorative plate 40 correspond one to one with the auxiliary blow-out passages 58 of the water receiving tray 55. Each auxiliary blow-out opening 43 is connected to the corresponding auxiliary blow-out passage 58.

[0075] 〈Liquid pipe unit〉

[0076] like Figure 5 As shown in FIG. 1 , the liquid pipe unit 100 includes a liquid side flow divider 101, a liquid side manifold 102, and a plurality of liquid side branch pipes 103. Figure 5 In the figure, only one liquid side branch pipe 103 is shown.

[0077] One end of the liquid-side collecting pipe 102 and one end of each liquid-side branch pipe 103 are connected to the liquid-side flow divider 101 . The liquid-side flow divider 101 is a component that distributes the refrigerant flowing from the liquid-side collecting pipe 102 to the plurality of liquid-side branch pipes 103 .

[0078] The other end of each liquid-side branch pipe 103 is connected to the heat transfer pipe 66 of the corresponding indoor heat exchanger 65. The liquid-side branch pipe 103 allows the liquid-side flow divider 101 and the heat transfer pipe 66 of the indoor heat exchanger 65 to communicate with each other.

[0079] The liquid side manifold 102 extends toward the outside of the housing body 36 through a first through hole 38a formed on the side plate 36b of the housing body 36. The other end of the liquid side manifold 102 is exposed to the outside of the housing body 36. The first through hole 38a corresponds to the through hole of the present disclosure.

[0080] A liquid side covering member 105 is mounted on the liquid side collecting pipe 102. The liquid side covering member 105 is a cylindrical member made of foamed resin. The liquid side covering member 105 covers the portion of the liquid side collecting pipe 102 that spans the inside and outside of the shell body 36, and blocks the gap between the edge of the through hole formed in the side plate 36b and the liquid side collecting pipe 102.

[0081] 〈Tracheal unit〉

[0082] like Figure 5 As shown, the air pipe unit 150 includes an air side flow divider 151, an air side collecting pipe 152 and a plurality of air side branch pipes 153. Figure 5 In the figure, only one gas-side branch pipe 153 is shown.

[0083] One end of the gas collecting pipe 152 and one end of each gas branch pipe 153 are connected to the gas side flow divider 151. The gas side flow divider 151 is a component that distributes the refrigerant flowing from the gas collecting pipe 152 to the plurality of gas side branch pipes 153. The gas side flow divider 151 is a so-called gas header.

[0084] The other end of each gas-side branch pipe 153 is connected to the heat transfer pipe 66 of the corresponding indoor heat exchanger 65. The gas-side branch pipe 153 allows the gas-side flow divider 151 and the heat transfer pipe 66 of the indoor heat exchanger 65 to communicate with each other.

[0085] The gas-side collecting pipe 152 extends toward the outside of the housing body 36 through the second through hole 38b formed on the side plate 36b of the housing body 36. The other end of the gas-side collecting pipe 152 is exposed to the outside of the housing body 36. The second through hole 38b corresponds to the through hole of the present disclosure.

[0086] The gas side covering member 155 is mounted on the gas side collecting pipe 152. The gas side covering member 155 is a cylindrical member made of foamed resin. The gas side covering member 155 covers the portion of the gas side collecting pipe 152 that spans the inside and outside of the shell body 36, and blocks the gap between the edge of the through hole formed in the side plate 36b and the gas side collecting pipe 152.

[0087] <Air flow in the indoor unit>

[0088] During the operation of the indoor unit 30, the indoor fan 50 rotates. When the indoor fan 50 rotates, indoor air in the indoor space flows into the primary space 37a in the casing 35 through the suction port 41. The air flowing into the primary space 37a is sucked by the indoor fan 50 and blown out to the secondary space 37b.

[0089] The air flowing into the secondary space 37b is cooled or heated in the process of passing through the indoor heat exchanger 65, and then flows into the four main blowing passages 57 and the four auxiliary blowing passages 58. The air flowing into the main blowing passage 57 is blown into the indoor space through the main blowing opening 42. The air flowing into the auxiliary blowing passage 58 is blown into the indoor space through the auxiliary blowing opening 43.

[0090] -Liquid side manifold-

[0091] The liquid side collecting pipe 102 is a refrigerant pipe for supplying the refrigerant in the gas-liquid two-phase state or the liquid single-phase state to flow during the operation of the outdoor unit. Figure 6 As shown in FIG. 1 , the liquid side collecting pipe 102 has a liquid side transversely extending pipe portion 102a at the end opposite to the liquid side flow divider 101. Figure 6 In order to facilitate understanding of the drawings, the liquid side collecting pipe 102, the flared joint 107 and the liquid side connecting pipe 12a are not made into a cross-sectional view.

[0092] In addition, the liquid side collecting pipe 102 includes a liquid side first pipe 110, a liquid side second pipe 120, and a joint pipe 106. The liquid side lateral extension pipe portion 102a is composed of a part of the liquid side first pipe 110 (a first lateral pipe portion 112 described later), the joint pipe 106, and the entire liquid side second pipe 120 (a second lateral pipe portion 122 described later).

[0093] 〈Liquid side lateral extension tube section〉

[0094] The central axis direction (extension direction) of the liquid-side transverse extension tube portion 102a is substantially horizontal. The liquid-side transverse extension tube portion 102a passes through the first through hole 38a of the shell 35. The liquid-side transverse extension tube portion 102a is arranged to span the internal space S1 and the external space S2 of the shell 35. The liquid-side transverse extension tube portion 102a is covered by the liquid-side covering member 105. It should be noted that the portion of the liquid-side manifold 102 that is closer to the liquid-side diverter 101 than the liquid-side transverse extension tube portion 102a can be formed straight or as a curved portion.

[0095] At one end of the liquid side transversely extending tube portion 102a ( Figure 6 The flared joint 107 is installed at the right end of the housing 35. The flared joint 107 is made of brass. The flared joint 107 is arranged in the external space S2 of the housing 35.

[0096] The liquid-side connecting pipe 12a is inserted into one end of the flared joint 107. The liquid-side connecting pipe 12a is connected to the liquid-side normally closed valve 26. The liquid-side connecting pipe 12a is covered with a heat insulating member 71. The heat insulating member 71 is a cylindrical member made of a foamed resin.

[0097] The liquid side covering member 105 and the heat insulating member 71 are connected via the connecting member 72. Specifically, the connecting member 72 is fixed to the liquid side covering member 105 and the heat insulating member 71 by wrapping both ends of the connecting member 72 with the tape member 73, respectively.

[0098] 〈Liquid side first pipe〉

[0099] The first liquid side tube 110 is a round tube. The material of the first liquid side tube 110 is aluminum or aluminum alloy. One end of the first liquid side tube 110 is inserted into one end of the liquid side flow divider 101 .

[0100] like Figure 6 As shown, the first liquid side tube 110 includes a first transverse tube portion 112. The first transverse tube portion 112 is a straight circular tubular portion. The central axis direction (extension direction) of the first transverse tube portion 112 is substantially horizontal. The first transverse tube portion 112 is formed at one end of the first liquid side tube 110 (the end on the side opposite to the liquid side flow divider 101). One end of the first transverse tube portion 112 ( Figure 6 The right end in FIG. 1 is the first connection end 111.

[0101] 〈Joint pipe〉

[0102] The joint pipe 106 is a relatively short circular tubular member. The joint pipe 106 is arranged substantially coaxially with the first liquid side pipe 110. One end of the joint pipe 106 ( Figure 6 The left end in FIG. 1 is joined to the first connecting end 111 which is one end of the first liquid side tube 110 by brazing.

[0103] The joint pipe 106 is a metal pipe. The material of the joint pipe 106 is stainless steel. The main component of stainless steel is iron (Fe). The ionization tendency of iron (Fe) is higher than that of copper (Cu) and lower than that of aluminum (Al).

[0104] 〈Liquid side second pipe〉

[0105] The second liquid side tube 120 is a straight round tube. The material of the second liquid side tube 120 is copper or copper alloy. The central axis direction (extension direction) of the second liquid side tube 120 is substantially horizontal. The second liquid side tube 120 and the joint tube 106 are substantially coaxially arranged.

[0106] One end of the second liquid side pipe 120 ( Figure 6 The second connecting end 121 is the left end of the second liquid side pipe 120. The entire second liquid side pipe 120 is a second transverse pipe portion 122 extending in the transverse direction and including the second connecting end 121. The second connecting end 121 is connected to the other end ( Figure 6 The right end of the ) is connected.

[0107] The second cross pipe portion 122 , the joint pipe 106 , and the first cross pipe portion 112 are arranged on a straight line.

[0108] <Liquid side covering parts>

[0109] The liquid side covering component 105 is a thick-walled cylindrical component made of foamed resin. The liquid side covering component 105 covers the entire circumference of the liquid side lateral extension tube portion 102a of the liquid side collecting pipe 102. The liquid side covering component 105 prevents the liquid side lateral extension tube portion 102a from contacting the air and acts as a heat insulating component. The liquid side covering component 105 covers the end of the liquid side collecting pipe 102 on the opposite side of the liquid side diverter 101. It should be noted that in addition to covering the liquid side lateral extension tube portion 102a, the liquid side covering component 105 may also cover the portion of the liquid side collecting pipe 102 other than the liquid side lateral extension tube portion 102a (specifically, the curved portion).

[0110] The liquid side covering member 105 is arranged in the first through hole 38a in a manner spanning the internal space S1 and the external space S2 of the housing 35. The liquid side covering member 105 has one end ( Figure 6The first end 105a as the right end in the direction of extension and the other end ( Figure 6 The first end 105a is located outside the housing 35. The second end 105b is located inside the housing 35.

[0111] A liquid-side fastening member 130 is attached to the outer periphery of the liquid-side covering member 105. The liquid-side fastening member 130 fastens the liquid-side covering member 105 to the liquid-side collecting pipe 102. The liquid-side fastening member 130 includes a first fastening member 131 and a second fastening member 132.

[0112] The first fastening member 131 is arranged at the other end ( Figure 6 The first fastening member 131 is arranged inside the housing 35. The first fastening member 131 of the present embodiment is a cable tie. The cable tie surrounds the entire circumference of the liquid side covering member 105. By adjusting the inner diameter of the cable tie to be smaller than the outer diameter of the liquid side covering member 105, the liquid side covering member 105 is fastened. As a result, no gap is formed between the first fastening member 131 and the liquid side covering member 105.

[0113] The second fastening member 132 is arranged at one end ( Figure 6 The second fastening member 132 of the present embodiment is a fastening member made of a foamed resin. The fastening member as the second fastening member 132 is embedded in the first through hole 38a of the housing 35. The second fastening member 132 is a slightly thicker approximately rectangular member, and its lower portion is configured to be cut into a semicircular shape.

[0114] The first through hole 38a of the housing 35 is configured to fit the second fastening member 132 and the liquid-side collecting pipe 102. Specifically, the upper portion of the first through hole 38a is configured in a rectangular shape, and the lower portion of the first through hole 38a is formed in a semicircular shape.

[0115] Here, when the semicircle formed at the lower part of the first through hole 38a and the semicircle formed at the lower part of the second fastening member 132 are combined, a circular hole is formed. The liquid side collecting pipe 102 is arranged in the circular hole. The diameter of the circular hole is larger than the outer diameter of the liquid side lateral extension tube portion 102a, and smaller than the outer diameter of the liquid side covering member 105. Therefore, by inserting the second fastening member 132 into the first through hole 38a of the housing 35, the liquid side covering member 105 is fastened. As a result, no gap is formed between the second fastening member 132 and the liquid side covering member 105.

[0116] By fastening the liquid-side covering member 105 with the first fastening member 131 and the second fastening member 132 in this manner, the formation of gaps between the liquid-side covering member 105 and the liquid-side collecting pipe 102 at both ends of the liquid-side covering member 105 is suppressed.

[0117] <Layout of the first connection end and the second connection end of the liquid side collecting pipe>

[0118] The first connection end 111 of the liquid side manifold 102 is disposed between the first fastening member 131 and the second fastening member 132. Also, similarly to the first connection end 111, the second connection end 121 of the liquid side manifold 102 is also disposed between the first fastening member 131 and the second fastening member 132.

[0119] Here, the liquid side manifold 102 has a liquid side connection portion 140. The liquid side connection portion 140 includes a first connection end 111 and a second connection end 121 of the liquid side manifold 102. Figure 6 As shown, in this embodiment, the liquid side connecting portion 140 includes an end portion ( Figure 6 The right end of the pipe 106 and the end of the second pipe on the liquid side ( Figure 6 The liquid side connection portion 140 corresponds to the first part of the present disclosure.

[0120] The liquid side connection portion 140 is formed on the liquid side laterally elongated tube portion 102a. The liquid side connection portion 140 is arranged between the first fastening member 131, 181 and the second fastening member 132, 182. The liquid side connection portion 140 is arranged in the internal space S1 of the housing 35.

[0121] - Gas side manifold -

[0122] The gas side collecting pipe 152 is a refrigerant pipe for the flow of gas single-phase refrigerant during the operation of the outdoor unit. Figure 7 As shown in FIG. 1 , the gas side collecting pipe 152 has a gas side transversely extended pipe portion 152a at the end opposite to the gas side flow divider 151. Figure 7 In order to facilitate understanding of the drawings, the gas-side collecting pipe 152, the flared joint 157 and the gas-side connecting pipe 12b are not made into cross-sectional views.

[0123] In addition, the gas side collecting pipe 152 includes a gas side first pipe 160, a gas side second pipe 170, and a joint pipe 156. The gas side lateral extension pipe portion 152a is composed of a part of the gas side first pipe 160 (a first lateral pipe portion 162 described later), the joint pipe 156, and the entire gas side second pipe 170 (a second lateral pipe portion 172 described later).

[0124] 〈Lateral extension tube on the gas side〉

[0125] The structure of the gas-side lateral extension tube portion 152a is the same as that of the liquid-side lateral extension tube portion 102a. The gas-side lateral extension tube portion 152a passes through the second through hole 38b of the housing 35. The gas-side lateral extension tube portion 152a is arranged to span the internal space S1 and the external space S2 of the housing 35. The gas-side lateral extension tube portion 152a is covered by the gas-side covering member 155.

[0126] At one end of the gas-side transversely extended tube portion 152a ( Figure 7 A flared joint 157 is installed at the right end of the housing 35. The flared joint 157 is made of brass. The flared joint 157 is arranged in the external space S2 of the housing 35.

[0127] The gas-side connecting pipe 12b is inserted into one end of the flared joint 157. The gas-side connecting pipe 12b is connected to the gas-side normally closed valve 27. The gas-side connecting pipe 12b is covered by the heat insulating member 71. The structure of the heat insulating member 71 and the connection between the gas-side covering member 155 and the heat insulating member 71 are the same as those of the heat insulating member 71 of the liquid-side connecting pipe 12a.

[0128] 〈First pipe on the gas side〉

[0129] The structures of the gas-side first tube 160 and the first transverse tube portion 162 are the same as the structures of the liquid-side first tube 110 and the first transverse tube portion 112. Figure 7 As shown, one end of the first transverse tube portion 162 ( Figure 7 The right end in FIG. 1 is the first connection end 161.

[0130] 〈Joint pipe〉

[0131] The joint pipe 156 is a relatively short circular tubular member. The joint pipe 156 is arranged substantially coaxially with the gas side first pipe 160. One end of the joint pipe 156 ( Figure 7 The left end in FIG. 1 is joined to the first connecting end 161 which is one end of the first gas-side pipe 160 by brazing.

[0132] The joint pipe 156 is a metal pipe. The material of the joint pipe 156 is stainless steel. The main component of stainless steel is iron (Fe). The ionization tendency of iron (Fe) is higher than that of copper (Cu) and lower than that of aluminum (Al).

[0133] 〈Gas side second pipe〉

[0134] The structure of the gas-side second tube 170 is the same as that of the liquid-side second tube 120. One end of the gas-side second tube 170 ( Figure 7The left end in FIG. 1 is the second connection end 171. The entire gas-side second pipe 170 is a second transverse pipe portion 172 extending in the transverse direction and including the second connection end 171. The second transverse pipe portion 172, the joint pipe 156, and the first transverse pipe portion 162 are arranged in a straight line.

[0135] <Air side cover>

[0136] The structure of the gas-side covering member 155 is the same as that of the liquid-side covering member 105. The gas-side covering member 155 covers the entire circumference of the gas-side lateral extension tube portion 152a of the gas-side collecting pipe 152. The gas-side covering member 155 covers the end of the gas-side collecting pipe 152 on the opposite side of the gas-side flow divider 151.

[0137] The air side covering member 155 is arranged in the second through hole 38b in a manner spanning the internal space S1 and the external space S2 of the housing 35. The air side covering member 155 has one end ( Figure 7 The first end 155a as the right end in the direction of extension and the other end ( Figure 7 The first end 155a is located outside the housing 35. The second end 155b is located inside the housing 35.

[0138] An air-side fastening member 180 is mounted on the outer periphery of the air-side covering member 155. The air-side fastening member 180 fastens the air-side covering member 155 to the air-side collecting pipe 152. The air-side fastening member 180 includes a first fastening member 181 and a second fastening member 182. The structures of the first fastening member 181 and the second fastening member 182 are the same as those of the first fastening member 131 and the second fastening member 132.

[0139] The first fastening member 181 of the present embodiment is a cable tie. The second fastening member 182 of the present embodiment is a fastening member made of a foamed resin. The fastening member as the second fastening member 182 is embedded in the second through hole 38b of the housing 35. The second fastening member 182 is a slightly thicker approximately rectangular member, and its lower portion is configured to be cut into a semicircular shape.

[0140] The second through hole 38b of the housing 35 is configured to fit the second fastening member 182 and the gas-side collecting pipe 152. Specifically, the upper portion of the second through hole 38b is configured in a rectangular shape, and the lower portion of the second through hole 38b is formed in a semicircular shape.

[0141] Here, when the semicircle formed at the lower part of the second through hole 38b is combined with the semicircle formed at the lower part of the second fastening member 182, a circular hole is formed. The gas side collecting pipe 152 is arranged in the circular hole. The diameter of the circular hole is larger than the outer diameter of the gas side lateral extension tube portion 152a, and smaller than the outer diameter of the gas side covering member 155. Therefore, by inserting the second fastening member 182 into the second through hole 38b of the housing 35, the liquid side covering member 105 is fastened.

[0142] By fastening the gas-side covering member 155 with the first fastening member 181 and the second fastening member 182 , it is possible to suppress the formation of a gap between the gas-side covering member 155 and the gas-side collecting pipe 152 at both ends of the gas-side covering member 155 .

[0143] <Layout of the first connection end and the second connection end of the gas side collecting pipe>

[0144] The first connection end 161 of the gas side collection pipe 152 is arranged between the first fastening member 181 and the second fastening member 182. In addition, similarly to the first connection end 161, the second connection end 171 of the gas side collection pipe 152 is also arranged between the first fastening member 181 and the second fastening member 182.

[0145] Here, the gas side collection pipe 152 has a gas side connection portion 190. The gas side connection portion 190 includes a first connection end 161 and a second connection end 171 of the gas side collection pipe 152. Figure 7 As shown, in this embodiment, the gas side connecting portion 190 includes an end portion ( Figure 7 The right end of the joint pipe 156 and one end of the second gas side pipe ( Figure 7 The gas-side connecting portion 190 corresponds to the first part of the present disclosure.

[0146] The gas-side connecting portion 190 is formed on the gas-side laterally elongated tube portion 152a. The gas-side connecting portion 190 is provided between the first fastening member 181 and the second fastening member 182. The gas-side connecting portion 190 is arranged in the internal space S1 of the housing 35.

[0147] - Features of the embodiment (1) -

[0148] In the liquid side collecting pipe 102 of this embodiment, there are a liquid side first tube 110 formed of aluminum or aluminum alloy and a liquid side second tube 120 formed of copper or copper alloy. The first connection end 111 of the liquid side first tube 110 and the second connection end 121 of the liquid side second tube 120 are connected via a joint pipe 106. The liquid side collecting pipe 102 has a liquid side connecting portion 140, which includes the first connection end 111 of the liquid side first tube 110, the second connection end 121 of the liquid side second tube 120, and the joint pipe 106. The entire circumference of the liquid side connecting portion 140 is covered by a liquid side covering member 105. The liquid side covering member 105 is arranged in the first through hole 38a of the shell 35 in a manner spanning the internal space S1 and the external space S2 of the shell 35.

[0149] Here, in the liquid side connection part 140, when the liquid side first pipe 110, the joint pipe 106 and the liquid side second pipe 120 are connected, it is preferable to form the liquid side connection part 140 in a straight line from the viewpoint of operability. On the other hand, since the components such as the indoor fan 50 and the indoor heat exchanger 65 are accommodated in the housing 35, the pipe space for arranging the liquid side collecting pipe 102 is very narrow. When the liquid side connection part 140 is arranged in this limited pipe space, it is conceivable to arrange the liquid side connection part 140 near the first through hole 38a of the housing 35. This is because there is a little extra space near the first through hole 38a of the housing 35 in order to carry out the construction work of the indoor unit 30.

[0150] There is a large difference in temperature and humidity between the internal space S1 and the external space S2 of the housing 35. Since the first through hole 38a is located at the boundary between the internal space S1 and the external space S2 of the housing 35, when the liquid side connection part 140 is arranged near the first through hole 38a, there is a problem that condensed water (dew condensation water) is easily generated in the liquid side connection part 140.

[0151] In this embodiment, since the entire circumference of the liquid-side connecting portion 140 is covered by the liquid-side covering member 105, the liquid-side connecting portion 140 is not in contact with the air, and thus it is possible to suppress the generation of condensed water on the surface of the liquid-side connecting portion 140. As a result, it is difficult for condensed water containing copper ions to adhere to the liquid-side first tube 110. As a result, it is possible to suppress the corrosion of the liquid-side first tube 110.

[0152] - Features of the embodiment (2) -

[0153] The liquid side covering member 105 of this embodiment is fastened by the first fastening member 131 and the second fastening member 132. The first connection end 111 of the liquid side first tube 110 and the second connection end 121 of the liquid side second tube 120 are arranged between the first fastening member 131 and the second fastening member 132.

[0154] In this way, the liquid side covering member 105 is fastened by the first fastening member 131, thereby no gap is formed between the liquid side covering member 105 and the liquid side collecting pipe 102. Therefore, even if condensed water is generated on the surface of the liquid side collecting pipe 102 closer to the liquid side manifold 101 than the first fastening member 131, the condensed water flowing along the liquid side collecting pipe 102 will not intrude between the liquid side covering member 105 and the liquid side collecting pipe 102, so that the corrosion of the liquid side first pipe 110 caused by the adhesion of condensed water containing copper ions can be suppressed.

[0155] In addition, the liquid-side covering member 105 is fastened by the second fastening member 132, thereby no gap is formed between the liquid-side covering member 105 and the liquid-side collecting pipe 102. Therefore, even if condensed water is generated on the surface of the portion of the liquid-side collecting pipe 102 arranged outside the shell 35, the condensed water flowing along the portion of the liquid-side collecting pipe 102 arranged outside the shell 35 does not intrude between the liquid-side covering member 105 and the liquid-side collecting pipe 102, thereby preventing the liquid-side first pipe 110 from being corroded due to the adhesion of condensed water containing copper ions.

[0156] In this way, since both sides of the liquid-side covering member 105 are fastened, condensed water generated in the parts of the liquid-side collecting pipe 102 located inside and outside the shell 35 will not intrude between the liquid-side covering member 105 and the liquid-side collecting pipe 102. As a result, it is possible to more reliably suppress the corrosion of the liquid-side first pipe 110 caused by the adhesion of condensed water containing copper ions.

[0157] - Features of the embodiment (3) -

[0158] The liquid side connection part 140 of this embodiment is arranged on the liquid side horizontally extended tube part 102a extending in the horizontal direction in the liquid side collecting pipe 102, so the liquid side connection part 140 extends in the horizontal direction. Therefore, since the first horizontal tube part 112 of the liquid side first tube 110 is not located below the second horizontal tube part 122 of the liquid side second tube 120, even if condensed water containing copper ions is generated on the liquid side second tube 120, the condensed water is difficult to adhere to the liquid side first tube 110. Therefore, it is possible to suppress the corrosion of the liquid side first tube 110.

[0159] - Features of the embodiment (4) -

[0160] In the gas-side collecting pipe 152 of the present embodiment, there are a gas-side first pipe 160 formed of aluminum or an aluminum alloy and a gas-side second pipe 170 formed of copper or a copper alloy. The first connection end 161 of the gas-side first pipe 160 and the second connection end 171 of the gas-side second pipe 170 are connected via a joint pipe 156. The gas-side collecting pipe 152 has a gas-side connecting portion 190, which includes the first connection end 161 of the gas-side first pipe 160, the second connection end 171 of the gas-side second pipe 170, and the joint pipe 156. The entire circumference of the gas-side connecting portion 190 is covered by a gas-side covering member 155. The gas-side covering member 155 is arranged in the second through hole 38b of the shell 35 in a manner spanning the internal space S1 and the external space S2 of the shell 35.

[0161] Here, in the air-side connection part 190, when the air-side first pipe 160, the joint pipe 156, and the air-side second pipe 170 are connected, it is preferable that the air-side connection part 190 is formed in a straight line from the viewpoint of operability. On the other hand, since components such as the indoor fan 50 and the indoor heat exchanger 65 are accommodated in the housing 35, the pipe space for arranging the air-side collecting pipe 152 is very narrow. In the case where the air-side connection part 190 is arranged in this limited pipe space, it is conceivable to arrange the air-side connection part 190 near the second through hole 38b of the housing 35. This is because there is a little extra space near the second through hole 38b of the housing 35 in order to carry out the construction work of the indoor unit 30.

[0162] There is a large difference in temperature and humidity between the internal space S1 and the external space S2 of the housing 35. Since the second through hole 38b is located at the boundary between the internal space S1 and the external space S2 of the housing 35, when the air-side connecting portion 190 is arranged near the second through hole 38b, there is a problem that condensed water (dew condensation water) is easily generated in the air-side connecting portion 190.

[0163] In this embodiment, since the entire circumference of the gas-side connecting portion 190 is covered by the gas-side covering member 155, the gas-side connecting portion 190 is not in contact with the air, and thus it is possible to suppress the generation of condensed water on the surface of the gas-side connecting portion 190. As a result, it is difficult for condensed water containing copper ions to adhere to the gas-side first tube 160. As a result, it is possible to suppress the corrosion of the gas-side first tube 160.

[0164] - Features of the embodiment (5) -

[0165] The gas-side covering member 155 of this embodiment is fastened by the first fastening member 181 and the second fastening member 182. The first connection end 161 of the gas-side first pipe 160 and the second connection end 171 of the gas-side second pipe 170 are arranged between the first fastening member 181 and the second fastening member 182.

[0166] In this way, the gas-side covering member 155 is fastened by the first fastening member 181, thereby forming no gap between the gas-side covering member 155 and the gas-side collecting pipe 152. Therefore, even if condensed water is generated on the surface of the portion of the gas-side collecting pipe 152 arranged in the shell 35, the condensed water flowing along the portion of the gas-side collecting pipe 152 arranged in the shell 35 will not intrude between the gas-side covering member 155 and the gas-side collecting pipe 152, thereby preventing the gas-side first pipe 160 from being corroded due to the adhesion of condensed water containing copper ions.

[0167] In addition, the gas-side covering member 155 is fastened by the second fastening member 182, thereby no gap is formed between the gas-side covering member 155 and the gas-side collecting pipe 152. Therefore, even if condensed water is generated on the surface of the portion of the gas-side collecting pipe 152 arranged outside the shell 35, the condensed water flowing along the portion of the gas-side collecting pipe 152 arranged outside the shell 35 does not intrude between the gas-side covering member 155 and the gas-side collecting pipe 152, so that the gas-side first pipe 160 can be prevented from being corroded due to the adhesion of condensed water containing copper ions.

[0168] In this way, since both sides of the gas-side covering member 155 are fastened, condensed water generated in the parts of the gas-side collecting pipe 152 located inside and outside the shell 35 will not intrude between the gas-side covering member 155 and the gas-side collecting pipe 152. As a result, it is possible to more reliably suppress the corrosion of the gas-side first pipe 160 caused by the adhesion of condensed water containing copper ions.

[0169] - Features of the embodiment (6) -

[0170] The gas-side connection part 190 of the present embodiment is arranged on the gas-side horizontally extended tube part 152a extending in the horizontal direction in the gas-side collecting pipe 152, so that the gas-side connection part 190 extends in the horizontal direction. Therefore, the first horizontal tube part 162 of the gas-side first tube 160 will not be located below the second horizontal tube part 172 of the gas-side second tube 170. When condensed water is generated on the surface of the part located inside and outside the shell 35 of the gas-side collecting pipe 152 and the condensed water intrudes into between the gas-side connection part 190 and the gas-side covering member 155 along the gas-side collecting pipe 152, even if condensed water containing copper ions is generated on the gas-side second tube 170, since the condensed water flows downward under the action of gravity, it is difficult for the condensed water to adhere to the liquid-side first tube 110. Therefore, it is possible to suppress the corrosion of the liquid-side first tube 110.

[0171] - Modification 1 of the embodiment -

[0172] like Figure 8As shown, in the liquid side collecting pipe 102 of this embodiment, the first connection end 111 of the liquid side first pipe 110 and the second connection end 121 of the liquid side second pipe 120 may also be directly connected. In this case, the joint pipe 106 is omitted in the liquid side collecting pipe 102.

[0173] In the gas-side collecting pipe 152 of the present embodiment, the first connecting end 161 of the gas-side first pipe 160 and the second connecting end 171 of the gas-side second pipe 170 may be directly connected. In this case, the joint pipe 156 is omitted in the gas-side collecting pipe 152 .

[0174] - Modification 2 of the embodiment -

[0175] like Fig. 9 As shown, in the liquid side collecting pipe 102 of the present embodiment, the liquid side lateral extension pipe portion 102a may also be inclined downward as it goes toward the outside of the shell 35. In this case, the first lateral pipe portion 112 of the liquid side first pipe 110 will not be located below the second lateral pipe portion 122 of the liquid side second pipe 120. Therefore, even if condensed water containing copper ions is generated on the liquid side second pipe 120, the condensed water will flow downward under the action of gravity, and it is difficult for the condensed water to adhere to the liquid side first pipe 110. Therefore, it is possible to suppress the corrosion of the liquid side first pipe 110.

[0176] - Modification 3 of the embodiment -

[0177] like Fig.10 As shown in FIG. 1 , the liquid side fastening member 130 mounted on the liquid side covering member 105 of the present embodiment may also include only the first fastening member 131. In this case, the second fastening member 132 is not arranged in the first through hole 38a of the housing 35. At this time, the diameter of the first through hole 38a is substantially equal to the outer diameter of the liquid side covering member 105. Therefore, the liquid side covering member 105 is not fastened by the housing 35.

[0178] In this case, the first connection end 111 of the first transverse pipe portion 112 is arranged between the first fastening member 131 and the first end 105a of the liquid side covering member 105 located outside the housing 35. In this case, the liquid side covering member 105 is fastened by the first fastening member 131, thereby no gap is formed between the liquid side covering member 105 and the liquid side collecting pipe 102. Therefore, even if condensed water is generated on the surface of the liquid side collecting pipe 102 closer to the liquid side diverter 101 side than the first fastening member 131, the condensed water flowing along the liquid side collecting pipe 102 does not intrude between the liquid side covering member 105 and the liquid side collecting pipe 102, so that the corrosion of the liquid side first pipe 110 caused by the adhesion of condensed water containing copper ions can be suppressed.

[0179] In addition, the gas-side fastening member 180 mounted on the gas-side covering member 155 of the present embodiment may also include only the first fastening member 181. In this case, the second fastening member 182 is not arranged in the second through hole 38b of the housing 35. In this case, the diameter of the second through hole 38b is substantially equal to the outer diameter of the gas-side covering member 155. Therefore, the gas-side covering member 155 is not fastened by the housing 35.

[0180] In this case, the first connection end 161 of the first transverse pipe portion 162 is arranged between the first fastening member 181 and the first end 155a of the gas-side covering member 155 located outside the housing 35. In this case, the gas-side covering member 155 is fastened by the first fastening member 181, thereby no gap is formed between the gas-side covering member 155 and the gas-side collecting pipe 152. Therefore, even if condensed water is generated on the surface of the gas-side collecting pipe 152 closer to the gas-side diverter 151 side than the first fastening member 181, the condensed water flowing along the gas-side collecting pipe 152 will not intrude between the gas-side covering member 155 and the gas-side collecting pipe 152, so that the gas-side first pipe 160 can be prevented from being corroded due to the adhesion of condensed water containing copper ions.

[0181] - Modification 4 of the Implementation Method -

[0182] like Fig.11 As shown, the liquid side fastening member 130 attached to the liquid side covering member 105 of the present embodiment may include only the second fastening member 132. In this case, the cable tie as the first fastening member 131 is omitted.

[0183] In this case, the second connection end 121 of the second transverse pipe portion 122 is arranged between the second fastening member 132 and the second end 105b of the liquid side covering member 105 located inside the shell 35. In this case, the liquid side covering member 105 is fastened by the second fastening member 132, thereby no gap is formed between the liquid side covering member 105 and the liquid side collecting pipe 102. Therefore, even if condensed water is generated on the surface of the portion of the liquid side collecting pipe 102 arranged outside the shell 35, the condensed water flowing along the portion of the liquid side collecting pipe 102 arranged outside the shell 35 does not intrude between the liquid side covering member 105 and the liquid side collecting pipe 102, so that the corrosion of the liquid side first pipe 110 caused by the adhesion of condensed water containing copper ions can be suppressed.

[0184] In addition, the air-side fastening member 180 attached to the air-side covering member 155 of the present embodiment may include only the second fastening member 182. In this case, the wire tie as the first fastening member 131 is omitted.

[0185] In this case, the second connection end 171 of the second transverse pipe portion 172 is arranged between the second fastening member 182 and the second end 155b of the gas-side covering member 155 located inside the housing 35. In this case, the gas-side covering member 155 is fastened by the second fastening member 182, thereby forming no gap between the gas-side covering member 155 and the gas-side collecting pipe 152. Therefore, even if condensed water is generated on the surface of the portion of the gas-side collecting pipe 152 arranged outside the housing 35, the condensed water flowing along the portion of the gas-side collecting pipe 152 arranged outside the housing 35 does not intrude between the gas-side covering member 155 and the gas-side collecting pipe 152, thereby preventing the gas-side first pipe 160 from being corroded due to the adhesion of condensed water containing copper ions.

[0186] - Modification 5 of the embodiment -

[0187] like Fig.12 As shown in the figure, the first fastening member 131 mounted on the liquid side covering member 105 of the present embodiment may also be a fastening member arranged in the first through hole 38a of the housing 35. In this case, the second fastening member 132 is a cable tie and is arranged outside the housing 35. Also, in this case, the liquid side connecting portion 140 is arranged near the first through hole 38a outside the housing 35. In this case, the same effect as the above embodiment can be obtained.

[0188] In addition, the first fastening member 181 mounted on the gas-side cover member 155 of the present embodiment may also be a fastening member arranged in the second through hole 38b of the housing 35. In this case, the second fastening member 182 is a cable tie and is arranged outside the housing 35. Also, in this case, the gas-side connection portion 190 is arranged near the second through hole 38b outside the housing 35. In this case, the same effect as the above embodiment can be obtained.

[0189] - Modification Example 6 of Implementation Method -

[0190] In the present embodiment, the housing 35 is provided with the first through hole 38a through which the liquid supply side manifold 102 passes and the second through hole 38b through which the gas supply side manifold 152 passes. However, a single through hole may be provided through which both the liquid supply side manifold 102 and the gas supply side manifold 152 pass. In this case, a single fastening member is configured to have both the function of the liquid side second fastening member 132 and the function of the gas side second fastening member 182, and the single fastening member is embedded in the single through hole.

[0191] - Modification 7 of the Implementation Method -

[0192] The second fastening members 132 and 182 of this embodiment may also be cable ties. In this case, the second fastening members 132 and 182 are arranged near the through holes 38a and 38b of the housing 35. In this case, the cable ties as the second fastening members 132 and 182 may be arranged inside the housing 35 or outside the housing 35.

[0193] - Modification 8 of the Implementation Method -

[0194] like Fig.13 As shown in FIG. 1 , the second fastening member 132 mounted on the liquid side covering member 105 of the present embodiment may also be the housing 35. In this case, the diameter of the first through hole 38a of the housing 35 is larger than the outer diameter of the liquid side lateral extension tube portion 102a, and smaller than the outer diameter of the liquid side covering member 105. Therefore, the liquid side covering member 105 is fastened by the first through hole 38a of the housing 35. Thus, no gap is formed between the second fastening member 132 and the liquid side covering member 105. In this case, the same effect as the above embodiment can be obtained.

[0195] In addition, the second fastening member 182 mounted on the gas-side covering member 155 of the present embodiment may also be the housing 35. In this case, the diameter of the second through hole 38b of the housing 35 is larger than the outer diameter of the gas-side lateral extension tube portion 152a, and smaller than the outer diameter of the gas-side covering member 155. Therefore, the gas-side covering member 155 is fastened by the second through hole 38b of the housing 35. Thus, no gap is formed between the second fastening member 182 and the gas-side covering member 155. In this case, the same effect as the above-mentioned embodiment can be obtained.

[0196] - Modification Example 9 of Implementation Method -

[0197] In the liquid-side covering member 105 of the present embodiment, the liquid-side collecting pipe 102 may not be fastened by the liquid-side fastening member 130 . In other words, the indoor unit 30 may not include the liquid-side fastening member 130 .

[0198] In addition, in the air-side covering member 155 of the present embodiment, the air-side collecting pipe 152 may not be fastened by the air-side fastening member 180. In other words, the indoor unit 30 may not include the air-side fastening member 180.

[0199] - Modification 10 of the embodiment -

[0200] One or both of the liquid pipe unit 100 and the gas pipe unit 150 of the present embodiment may be connected to the heat transfer pipe of the outdoor heat exchanger 23 provided in the outdoor unit 20 constituting the unit.

[0201] The above embodiments and variations are described, but it should be understood that various changes can be made to the form and specific matters without departing from the spirit and scope of the claims. In addition, the above embodiments, variations, and other embodiments may be appropriately combined or replaced.

[0202] The words "first", "second", "third", etc. mentioned above are only used to distinguish sentences containing the above words, and are not intended to limit the quantity or order of the sentences.

[0203] - Industrial Applicability -

[0204] As described above, the present disclosure is useful for a component unit of an air conditioning device and an air conditioning device.

[0205] - Explanation of symbols - 10 Air conditioning unit

[0206] 20 Outdoor unit (constituent unit)

[0207] 30 Indoor unit (component unit)

[0208] 35 Shell

[0209] 38a First through hole (through hole)

[0210] 38b Second through hole (through hole)

[0211] 65 Indoor heat exchanger (heat exchanger)

[0212] 66 Heat transfer tube

[0213] 101 Liquid side flow divider (flow divider)

[0214] 102 Liquid side manifold (refrigerant pipe)

[0215] 102a Liquid side lateral extension tube portion (lateral extension tube portion)

[0216] 105 Liquid side covering member (covering member)

[0217] 105a First end

[0218] 105b Second end

[0219] 106 Joint pipe (metal pipe)

[0220] 110 Liquid side first pipe (first pipe)

[0221] 111 First connection end

[0222] 120 Liquid side second pipe (second pipe)

[0223] 121 Second connection terminal

[0224] 131 first fastening member

[0225] 132 second fastening member

[0226] 140 Liquid side connection part (first part)

[0227] 151 Gas side flow divider (flow divider)

[0228] 152 Gas side manifold (refrigerant pipe)

[0229] 152a Gas side transverse extension tube (transverse extension tube)

[0230] 155 Gas side covering member (covering member)

[0231] 155a First end

[0232] 155b Second end

[0233] 156 Joint pipe (metal pipe)

[0234] 160 Gas side first pipe (first pipe)

[0235] 161 First connection end

[0236] 170 Gas side second pipe (second pipe)

[0237] 171 Second connection terminal

[0238] 181 First fastening member

[0239] 182 second fastening member

[0240] 190 Gas side connection part (first part)

[0241] S1 Interior Space

[0242] S2 External Space

Claims

1. A component unit of an air conditioning device, characterized in that: The air conditioning device comprises a housing (35), a heat exchanger (65), a refrigerant pipe (102, 152), a flow divider (101, 151) and a covering component (105, 155). The housing (35) has through holes (38a, 38b). The heat exchanger (65) is housed in the housing (35) and has a plurality of heat transfer tubes (66). The refrigerant pipe (102, 152) passes through the through hole (38a, 38b), The flow divider (101, 151) is connected to the heat exchanger (65) and the refrigerant pipes (102, 152), and distributes the refrigerant flowing in from the refrigerant pipes (102, 152) to the plurality of heat transfer pipes (66). The covering member (105, 155) covers the refrigerant pipe (102, 152), The refrigerant pipe (102, 152) comprises a first pipe (110, 160) and a second pipe (120, 170), The first tube (110, 160) is connected to the flow divider (101, 151), and the first tube (110, 160) is formed of aluminum or an aluminum alloy. The second tube (120, 170) is formed of copper or a copper alloy. The first connection end (111, 161) of the first tube (110, 160) is directly connected to the second connection end (121, 171) of the second tube (120, 170) or is connected via a metal tube (106, 156), and the material of the metal tube (106, 156) is different from that of the first tube (110, 160) and the second tube (120, 170). The covering member (105, 155) is arranged in the through hole (38a, 38b) in a manner spanning the inner space (S1) and the outer space (S2) of the housing (35), A first portion (140, 190) of the refrigerant tube (102, 152) is covered by the covering member (105, 155), and the first portion (140, 190) includes a first connecting end (111, 161) of the first tube (110, 160) and a second connecting end (121, 171) of the second tube (120, 170).

2. The air conditioning unit according to claim 1, characterized in that: The constituent unit of the air conditioning device further includes a fastening component (131, 181), wherein the fastening component (131, 181) fastens the covering component (105, 155) to the refrigerant pipe (102, 152). The first connection end (111, 161) is arranged between the fastening component (131, 181) and a first end (105a, 155a) of the covering component (105, 155) located outside the housing (35).

3. The air conditioning unit according to claim 1, characterized in that: The air conditioning device component unit further includes a fastening component (132, 182), wherein the fastening component (132, 182) fastens the covering component (105, 155) to the refrigerant pipe (102, 152). The second connection end (121, 171) is arranged between the fastening component (132, 182) and a second end (105b, 155b) of the covering component (105, 155) located inside the housing (35).

4. The air conditioning unit according to claim 1, characterized in that: The constituent unit of the air conditioning device further comprises a first fastening component (131, 181) and a second fastening component (132, 182), wherein the first fastening component (131, 181) and the second fastening component (132, 182) fasten the covering component (105, 155) to the refrigerant pipe (102, 152). The first connection end (111, 161) and the second connection end (121, 171) are arranged between the first fastening component (131, 181) and the second fastening component (132, 182).

5. The air conditioning unit according to any one of claims 1 to 4, characterized in that: The refrigerant tube (102, 152) includes a transversely extended tube portion (102a, 152a), wherein the transversely extended tube portion (102a, 152a) extends in a horizontal direction or tilts downward toward the outside of the shell (35). The first portion (140, 190) of the refrigerant tube (102, 152) is arranged on the transversely elongated tube portion (102a, 152a).

6. An air conditioning device, characterized in that: The air conditioning device comprises the component unit (20, 30) according to any one of claims 1 to 5.

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