JP2017180888A - Outdoor unit for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure strength with respect to an impact force applied by vibration and falling of an outdoor unit by compensating for the strength of a liquid header part or a gas header part.SOLUTION: A gas refrigerant pipeline 3G includes a gas header part 31G to which each gas branch pipe 43G is connected, and a liquid refrigerant pipeline 3L has a liquid header part 31L to which each liquid branch pipe 43L is connected. The gas header part 31G has a gas side extension part 32G which is formed by extending further upward than a connection part with the gas header part 31G of the gas branch pipe 43G arranged at the uppermost part. The liquid header part 31L has a liquid side extension part 32L which is formed by extending further upward than a connection part with the liquid header part 31L of the liquid branch pipe 43L arranged at the uppermost part. The gas side extension part 32G and the liquid side extension part 32L are fixed.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an outdoor unit of an air conditioner to which a plurality of indoor units are connected.

  A conventional air conditioner outdoor unit is provided with a connection port having a plurality of liquid pipe connection portions and gas pipe connection portions for connecting a plurality of indoor units. The connection port is provided on the side surface of the casing of the outdoor unit and is covered with a cover member in order to ensure workability when connecting the liquid pipe and the gas pipe to the connection port when the air conditioner is installed. . In this connection port, for example, each of the liquid pipe connection portion and the gas pipe connection portion is arranged side by side in the height direction of the casing, and each gas pipe connection portion corresponds to each liquid pipe connection portion. Some are arranged outside the side surface (for example, Patent Document 1).

  In the outdoor unit described in Patent Literature 1, a liquid header part formed at an end of a liquid refrigerant pipe extending outward from a side surface of a casing of the outdoor unit, and a plurality of pipes that connect each liquid pipe connection part and the liquid header part. Liquid branch pipes, a plurality of expansion valves provided in each liquid branch pipe, a gas header portion formed at an end of a gas refrigerant pipe extending outward from the side surface of the casing of the outdoor unit, and each gas pipe connection portion A gas branch pipe for connecting the gas header portion is provided.

Japanese Patent Laying-Open No. 2015-081746

  In the outdoor unit described in Patent Document 1, the liquid header part and the gas header part extend from below the side surface of the casing of the outdoor unit to the position of the uppermost liquid pipe connection part and gas pipe connection part. The header part and the gas header part are formed long in the vertical direction. In particular, when the liquid pipe connection part and the gas pipe connection part are increased in order to connect a large number (for example, six units) of indoor units to the outdoor unit, the vertical lengths of the liquid header part and the gas header part become long. Normally, the part of the liquid header and gas header that extends from the side of the housing to the outside is supported by the side of the housing, but the upper part of the liquid header and the gas header are connected to the liquid by a liquid branch pipe or gas branch pipe. It is only connected to the part and the gas pipe connection part, and is not supported by the casing or the like of the outdoor unit. For this reason, when the upper part of the liquid header part and the gas header part is shaken by the impact force applied by the vibration or dropping of the outdoor unit, if the movement of the liquid header part and the upper part of the gas header part is increased, the liquid header part and the gas header A large force was applied to the part, and the liquid header part and the gas header part might be bent or broken. In particular, since the liquid header section has a smaller pipe thickness and smaller inner diameter than the gas header section, the liquid header section is more likely to bend or bend than the gas header section. There was a risk of insufficient strength against falling or dropping.

  In view of the above problems, the present invention provides an outdoor unit of an air conditioner that can supplement the strength of a liquid header part or a gas header part and ensure the strength against an impact force applied by vibration or dropping of the outdoor unit. Objective.

In order to solve the above-described problems, an outdoor unit of an air conditioner according to the present invention includes a casing that houses an outdoor unit refrigerant circuit having a compressor, an outdoor heat exchanger, a liquid refrigerant pipe, and a gas refrigerant pipe, and a side surface of the casing. And a connection port for connecting each liquid pipe connected to each of the plurality of indoor units to the liquid refrigerant pipe and connecting each gas pipe connected to each of the plurality of indoor units to the gas refrigerant pipe. Is.
The connection port includes a plurality of gas pipe connection portions, a plurality of liquid pipe connection portions, a plurality of gas branch pipes, a plurality of liquid branch pipes, a plurality of expansion valves, and an attachment member. Each gas pipe connection part has a gas side union to which a gas branch pipe is connected and a gas side connection part to which a gas pipe is connected. Each liquid pipe connection part has a liquid side union to which the liquid branch pipe is connected and a liquid side connection part to which the liquid pipe is connected. The mounting member has a plurality of liquid pipe connection portions and a plurality of gas pipe connection portions arranged in a line in the vertical direction of the housing alternately and in a line, and each liquid side connection portion and each gas side connection portion are arranged on the rear side of the housing. Arrange to face. Each gas branch pipe has one end connected to the gas refrigerant pipe and the other end connected to the gas side union. Each liquid branch pipe has one end connected to the liquid refrigerant pipe and the other end connected to the liquid side union. Each expansion valve is assembled to each liquid branch pipe. The gas refrigerant pipe has a gas header portion to which each gas branch pipe is connected. The liquid refrigerant pipe has a liquid header portion to which each liquid branch pipe is connected.
And a gas header part has the gas side extending | stretching part formed by extending | stretching upwards rather than the connection part with the gas header part of the gas branch pipe arrange | positioned in the uppermost part. The liquid header part has a liquid side extending part formed by extending upward from a connection part with the liquid header part of the liquid branch pipe arranged at the uppermost part. A gas side extending part and a liquid side extending part are fixed.

  According to the outdoor unit of the air conditioner of the present invention, the gas side extending part and the liquid side extending part are fixed, so that the strength of the liquid header part or the gas header part is supplemented by vibration or dropping of the outdoor unit. Strength against impact force can be ensured.

It is a perspective view of the state where the cover member of the outdoor unit of the air harmony device of the present invention was removed. It is the right view which looked at the connection port from the X direction in FIG. It is a principal part perspective view of the state which removed the service panel and cover member of the outdoor unit of this invention. It is a principal part perspective view which shows the state which removed the service panel and conduit panel of the outdoor unit of this invention, and looked at the connection port from the back side. It is sectional drawing equivalent to the PP cross section of FIG. 1 which looked at the outdoor unit of this invention from the front side. It is sectional drawing equivalent to the QQ cross section of FIG. 1 which looked at the outdoor unit of this invention from the upper surface side. It is QQ sectional drawing of FIG. 1, and is the figure which looked at the cross section from diagonally right upward. It is explanatory drawing which shows the cover member of this invention, (a) is a back view, (b) is the perspective view seen from the back surface. It is a perspective view which shows the attachment member of this invention. It is a perspective view which shows the attachment member and regulation plate of this invention. It is a figure explaining the assembly | attachment to the attachment member of a control plate, a liquid pipe connection part, and a gas pipe connection part. It is a top view which shows the dimensional relationship of the control plate seen from the A direction of FIG. 11, a liquid pipe connection part, and a gas pipe connection part.

  Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. 1 to 12 are diagrams for explaining an outdoor unit of an air-conditioning apparatus according to this embodiment. The outdoor unit of the air conditioner in this embodiment is an outdoor unit of a multi-type air conditioner in which a plurality of indoor units (for example, six units, not shown) are connected by a liquid pipe and a gas pipe.

  As shown in FIGS. 1, 6, and 7, the outdoor unit 1 has a rectangular parallelepiped housing 2. The outer shell of the housing 2 includes a bottom plate 21, a front panel 22, a side panel 25 that also serves as a part of the back panel, a top plate 26, and a support column 27. The front panel 22 includes a blowout panel 22a and a service panel 22b, and the side panel 25 includes a connection port arrangement panel 25a and a conduit panel 25b. The blowing panel 22a, the service panel 22b, a part of the connection port arrangement panel 25a, the conduit panel 25b, and the lower end of the column 27 are screwed to the bottom plate 21. The blowing panel 22a, the service panel 22b, the connection port arrangement panel 25a, and the upper end of the column 27 are screwed to the top plate 26.

  In the following description, in the casing 2 of the outdoor unit 1, the front panel 22 in FIG. 1 is the front side, the opposite side is the back side, and the service panel 22b is placed when the front panel 22 is viewed from the front. The explanation will be made with the right side as the right side and the opposite side as the left side. Further, in the following description, the left-right direction X when the front panel 22 of the housing 2 is viewed from the front side is “the lateral direction of the housing 2 (left-right direction)”, and the front-back direction Y is “the front-back direction of the housing 2”. The direction Z orthogonal to the direction X and the direction Y is defined as “the height direction of the casing 2 (vertical direction)”, X1 is leftward, X2 is rightward, Y1 is frontward, Y2 is rearward, Z1 is upward, Z2 is defined as lower and will be described.

  As shown in FIGS. 5 to 7, the inside of the housing 2 is partitioned into a heat exchanger chamber HC and a machine chamber MC by a partition plate 20. An outdoor heat exchanger E and a blower fan F are disposed in the heat exchanger chamber HC. The outdoor heat exchanger E is formed in a substantially L shape when viewed from above, and is disposed along the back surface from the left side surface of the housing 2. The blower fan F is attached to the motor M, and the blower fan F is disposed in front of the outdoor heat exchanger E by attaching the motor M to the motor support MF fixed to the outdoor heat exchanger E. As shown in FIG. 5, a compressor C and an electrical component unit U are arranged in the machine room MC. An electrical component unit U is disposed above the machine room MC, and a compressor C is disposed below the machine room MC. An outdoor heat exchanger E, a compressor C, an expansion valve 46L, which will be described later, and a four-way valve (not shown) that switches the flow direction of refrigerant in the outdoor heat exchanger E are connected to each other by a liquid refrigerant pipe 3L and a gas refrigerant pipe 3G. The machine refrigerant circuit is configured.

  The bottom plate 21 is a substantially rectangular steel plate, and as shown in FIG. 3, the peripheral portion has a flange bent upward at a substantially right angle. Further, on the lower surface of the bottom plate 21, legs 21 a are provided on the left and right to extend in the front-rear direction (Y direction) of the housing 2 and for installing the outdoor unit 1 on the ground.

  The blow-out panel 22a of the front panel 22 is obtained by processing a steel plate, and is arranged so as to cover the front side of the heat exchanger chamber HC as shown in FIGS. The blowout panel 22a is provided with a blowout grill 221 in which a lattice-like opening for blowing out the air sucked into the heat exchanger chamber HC by the blower fan F is formed at a position corresponding to the blower fan F. It has been.

  The service panel 22b of the front panel 22 is obtained by processing a steel plate and is disposed so as to cover the front side of the machine room MC. The service panel 22b is detachably attached so that the machine room MC can be easily accessed during maintenance work of the outdoor unit 1.

  As shown in FIGS. 6 and 7, the connection port arrangement panel 25a of the side panel 25 is formed by bending a steel plate into a substantially L shape when viewed from above, and substantially the entire right side surface of the housing 2 (excluding the lower part). ) And the rear end of the outdoor heat exchanger E up to the right end. A connection port 4 which will be described later is arranged on the outer right side of the connection port arrangement panel 25a. As shown in FIG. 4, a cable pipe connection port formed in a rectangular shape is provided below the back side of the connection port arrangement panel 25 a, and the electrical component unit U and the indoor unit drawn from the cable pipe connection port are connected to each other. A cable L such as a power line or an electric signal line to be connected is inserted into the cable pipes 281 and 281a.

  As shown in FIG. 7, the conduit panel 25 b of the side panel 25 is a steel plate formed in a plate shape, and is disposed below the connection port arrangement panel 25 a to cover the lower portion of the right side surface of the housing 2.

  As shown in FIG. 1 to FIG. 3 and FIG. 7, on the lower end side of the connection port arrangement panel 25 a, the position is on the front side (Y1 direction) from the center and above the lower end of the connection port arrangement panel 25 a (Z1 direction). A notch 252 is formed in a substantially rectangular shape. When the connection port arrangement panel 25a and the conduit panel 25b are attached to the bottom plate 21 and the top plate 26, a pipe outlet H is formed at the upper end of the notch 252 and the conduit panel 25b. Through this pipe outlet H, the gas refrigerant pipe 3G and the liquid refrigerant pipe 3L are drawn from the inside of the machine room MC to the outside of the housing 2.

The top plate 26 is a substantially rectangular steel plate, and as shown in FIGS. 1 and 2, the peripheral portion thereof has a flange bent downward at a substantially right angle. The support | pillar 27 is a steel material with a substantially L-shaped cross section, and is arrange | positioned at the corner | angular part of the left side surface and back surface of the outdoor unit 1, as shown in FIG.
The outdoor heat exchanger E is exposed toward the left side and the rear side between the column 27 and the left end of the blowout panel 22a and between the column 27 and the rear left end of the connection port arrangement panel 25a. Thus, a left side suction port and a rear side suction port for taking outside air into the heat exchanger chamber HC are provided.

  As shown in FIGS. 1 to 5 and 10, the outdoor unit 1 includes a connection port 4 on the right outside of the connection port arrangement panel 25 a. The connection port 4 connects each gas pipe (not shown) connected to the six indoor units to the gas refrigerant pipe 3G, and connects each liquid pipe (not shown) connected to the six indoor units to the liquid refrigerant. It is connected to the pipe 3L. The connection port 4 includes six gas pipe connection parts 42G, six liquid pipe connection parts 42L, six gas branch pipes 43G, six liquid branch pipes 43L, and six expansion valves 46L. One attachment member 47 and six regulation plates 48 are provided.

  Each gas pipe connection part 42G is formed by cutting brass, and has a gas side union 45G and a gas side connection part 44G as shown in FIGS. The gas side union 45G has a main shaft portion 451G and a screw portion 452G. The main shaft portion 451G is formed in a cylindrical shape having a regular hexagonal cross-sectional shape and an insertion passage (not shown) inside. One end of the main shaft portion 451G is formed so that the gas branch pipe 43G can be connected, and a screw portion 452G is formed on the outer periphery of the other end side of the main shaft portion 451G. A gas side flare nut 44Ga is screwed into the screw portion 452G to constitute a gas side connection portion 44G.

  On the side of the main shaft portion 451G to which the gas branch pipe 43G is connected, a groove portion 453G is provided by cutting a part of the main shaft portion 451G into an annular shape with a predetermined width. A gas-side groove fitting rib 484G provided in a gas-side notch 482G of the restriction plate 48 described later is fitted into the groove 453G.

  Each gas pipe connection part 42G is regulated by inserting a gas side connection part 44G toward a rear side (Y2 direction) of the housing 2 in a gas side insertion hole 472G provided in a union plate 472 whose main shaft part 451G will be described later. The plate 48 is fixed to the union plate 472. Each gas branch pipe 43G is connected to each main shaft part 451G by welding or the like, and each gas pipe is attached to each screw part 452G, and each gas pipe is connected to each gas side connection part by tightening the gas side flare nut 44Ga. 44G and each gas branch pipe 43G and each gas pipe are connected via the insertion path of each main-shaft part 451G.

  Each liquid pipe connection portion 42L is formed by cutting brass, and has a liquid side union 45L and a liquid side connection portion 44L as shown in FIGS. The liquid side union 45L has a main shaft portion 451L and a screw portion 452L. The main shaft portion 451L has a regular hexagonal cross-sectional shape and is formed in a cylindrical shape having an insertion passage (not shown) inside. One end of the main shaft portion 451L is formed so that the liquid branch pipe 43L can be connected, and a screw portion 452L is formed on the outer periphery of the other end side of the main shaft portion 451L. The liquid side flare nut 44La is screwed into the screw portion 452L to form the liquid side connection portion 44L.

  On the side of the main shaft portion 451L to which the liquid branch pipe 43L is connected, a groove portion 453L is provided by cutting a part of the main shaft portion 451L into an annular shape with a predetermined width. A liquid-side groove fitting rib 484L provided in a liquid-side notch 482L of the regulation plate 48 described later is fitted into the groove 453L.

  Each liquid pipe connecting portion 42L is regulated by inserting the liquid-side connecting portion 44L into the liquid-side insertion hole 472L provided in the union plate 472, which will be described later, in the main shaft portion 451L, toward the rear (Y2 direction) of the housing 2. The plate 48 is fixed to the union plate 472. In addition, each liquid branch pipe 43L is connected to each main shaft part 451L by welding or the like, and each liquid pipe is attached to each screw part 452L to tighten the liquid side flare nut 44La so that each liquid pipe is connected to each liquid side connection part. 44L, each liquid branch pipe 43L and each liquid pipe communicate with each other via an insertion passage of each main shaft portion 451L.

  As shown in FIGS. 2, 4 and 9, the attachment member 47 is formed by bending a rectangular steel plate into a substantially L shape. The attachment member 47 has a screwing plate 471 and a union plate 472.

  The screwing plate 471 is formed in a vertically long shape. By screwing the screwing plate 471 to the connection port arrangement panel 25a, as shown in FIG. 2, the mounting member 47 is arranged at a position closer to the rear side than the center in the front-rear direction on the right side surface of the housing 2. .

  The union plate 472 is formed in a vertically long shape extending from the front end portion of the long side on the front side of the screwing plate 471 in a direction substantially perpendicular to the screwing plate 471. The union plate 472 has the same number of gas side insertion holes 472G as the gas pipe connection portions 42G, the same number of liquid side insertion holes 472L as the liquid pipe connection portions 42L, the number of gas side insertion holes 472G and the number of liquid side insertion holes 472L. The number of the positioning protrusions 472b is added. As shown in FIG. 9, the six gas side insertion holes 472G and the six liquid side insertion holes 472L are arranged in the order of the liquid side insertion hole 472L and the gas side insertion hole 472G from the top to the bottom of the union plate 472. Arranged in a row. The gas side insertion hole 472G is a regular hexagonal insertion hole through which the main shaft portion 451G of the gas side union 45G can be inserted, and the liquid side insertion hole 472L is a regular hexagonal shape through which the main shaft portion 451L of the liquid side union 45L can be inserted. This is an insertion hole. Further, the positioning protrusion 472b is provided for positioning the regulating plate 48 when a later-described regulating plate 48 is mounted on the union plate 472. As shown in FIG. 11, the positioning protrusion 472b is formed on the left side of the liquid side insertion hole 472L and the gas side insertion hole 472G so as to protrude forward from the front surface 472a of the union plate 472.

  Since the union plate 472 is disposed at a substantially right angle with respect to the screwing plate 471, the union plate 472 is disposed perpendicular to the front-rear direction of the housing 2. As described above, when the gas pipe connection part 42G and the liquid pipe connection part 42L are attached to the union plate 472, the gas side connection part 44G and the liquid side connection part 44L protrude toward the rear of the housing 2, and the gas pipe The axial directions of the connecting portion 42G and the liquid pipe connecting portion 42L coincide with the front-rear direction of the housing 2.

  As shown in FIGS. 2 to 5, the gas header portion 31 </ b> G is formed by bending upward a gas refrigerant pipe 3 </ b> G drawn from the pipe outlet H to the outside of the housing 2. One end of each gas branch pipe 43G is connected to the gas header part 31G, and the other end of each gas branch pipe 43G is connected to each gas pipe connection part 42G as described above. Thereby, each gas branch pipe 43G is arrange | positioned with the space | interval corresponding to the space | interval of each gas pipe connection part 42G along the up-down direction (Z direction) of the gas header part 31G. Further, as shown in FIGS. 2 and 4, the gas side extending portion 32 </ b> G extends from the connection portion to the upper end portion of the gas branch pipe 43 </ b> G arranged at the uppermost portion of the gas header portion 31 </ b> G.

  As shown in FIGS. 2 to 5, the liquid header portion 31 </ b> L is formed by bending upward the liquid refrigerant pipe 3 </ b> L drawn out from the pipe outlet H to the outside of the housing 2. One end of each liquid branch pipe 43L is connected to the liquid header section 31L, and the other end of each liquid branch pipe 43L is connected to each liquid pipe connection section 42L as described above. Thereby, each liquid branch pipe 43L is arrange | positioned with the space | interval corresponding to the space | interval of each liquid pipe connection part 42L along the up-down direction of the liquid header part 31L. As shown in FIGS. 2 and 4, the liquid side extending portion 32 </ b> L extends from the connection portion with the liquid header portion 31 </ b> L of the liquid branch pipe 43 </ b> L disposed at the top of the liquid header portion 31 </ b> L to the upper end portion. The liquid side extending part 32L is provided with a fixing part 321L formed by bending the upper part of the liquid side extending part 32L into a crank shape along the gas side extending part 32G.

  Each expansion valve 46L is assembled to each liquid branch pipe 43L. Each expansion valve 46L adjusts the amount of refrigerant flowing through each assembled liquid branch pipe 43L, that is, the amount of refrigerant flowing through each indoor unit.

  The positions of the gas header portion 31G, the liquid header portion 31L, and the expansion valve 46L in the connection port 4 described above will be described with reference to FIGS. As shown in FIGS. 2 to 7, the gas header portion 31G is disposed to the right (X2 direction) and forward (Y1 direction) than the liquid header portion 31L. That is, as shown in FIG. 6, the gas header portion 31G is disposed on the right front side of the liquid header portion 31L.

  As shown in FIGS. 6 and 7, each gas branch pipe 43G is bent rightward with respect to the axial direction of the gas pipe connecting portion 42G, that is, in a direction away from the connection port arrangement panel 25a. Specifically, each gas branch pipe 43G is bent in a substantially square shape to the right from the other end connected to the gas pipe connecting portion 42G. By connecting the gas header portion 31G to one end of each of the gas branch pipes 43G bent in this way, the gas header portion 31G is arranged as described above. The bent shape of each gas branch pipe 43G is not limited to this, and may be bent so that the gas header portion 31G is disposed at the above position.

  By arranging the gas header portion 31G and the liquid header portion 31L as described above, as shown in FIG. 6, a space a is formed on the connection port arrangement panel 25a side and the front side of the liquid header portion 31L from the gas header portion 31G. The

  In the space a, an expansion valve 46L assembled to each liquid branch pipe 43L is arranged. Each liquid branch pipe 43L has one end connected to the liquid header section 31L and the other end connected to the liquid pipe connection section 42L as described above. The shape of each liquid branch pipe 43L is substantially katakana-shaped as shown by a broken line in FIG. It is formed in a letter shape. Each of the liquid branch pipes 43L is bent upward at a predetermined angle θ with the connection part on the liquid header part 31L side and the connection part on the liquid pipe connection part 42L side as base ends. The expansion valve 46L is incorporated in each liquid branch pipe 43L at a position farthest from the connection part on the liquid header part 31L side and the connection part on the liquid pipe connection part 42L side. That is, as shown in FIG. 2, each expansion valve 46 is disposed above a folding point 43La formed by bending each liquid branch pipe 43L upward at a predetermined angle θ with respect to the bottom plate 21 of the housing 2. Is done. Note that the angle θ is a liquid branch pipe in which each expansion valve 46L is disposed in the space a, and each expansion valve 46L is assembled with the expansion valve 46L disposed above (in the Z1 direction) the expansion valve 46L. Any angle that does not interfere with 43L may be used. In addition, the bent shape of each liquid branch pipe 43L is not limited to this, and may be bent so that the expansion valve 46L is disposed in the space a.

  As described above, according to the outdoor unit 1 of the present embodiment, in order to connect a plurality of indoor units (six units in the present embodiment), the number of liquids corresponding to the number of indoor units is connected to the connection port 4. When providing the pipe connection part 42L and the gas pipe connection part 42G (six in this embodiment), the liquid pipe connection part 42L and the gas pipe connection part 42G are alternately arranged in a row in the vertical direction along the connection port arrangement panel 25a. Are arranged side by side. As a result, the dimension of the connection port 4 in the left-right direction can be reduced as compared with the case where the liquid pipe connection part 42L and the gas pipe connection part 42G are arranged side by side.

  In addition, according to the outdoor unit 1 of the present embodiment, the gas header portion 31G is disposed obliquely forward and to the right of the liquid header portion 31L, whereby the connection port arrangement panel 25a side from the gas header portion 31G and the front of the liquid header portion 31L. A space a is formed on the side, and each expansion valve 46L is arranged in the space a. As a result, the dimension of the connection port 4 in the front-rear direction can be reduced.

  Furthermore, according to the outdoor unit 1 of the present embodiment, each liquid branch pipe 43L to which each expansion valve 46L is assembled is bent upward at a predetermined angle θ with respect to the bottom plate 21 of the housing 2, whereby each expansion The valve 46L is disposed obliquely. As a result, the dimension of the connection port 4 in the height direction can be reduced as compared with the case where each expansion valve 46L is arranged perpendicular to the bottom plate 21.

  From the above, in the outdoor unit 1 of the present embodiment, the dimensions of the connection port 4 in the up / down / left / right / front / rear direction can be reduced. h is not larger than the height dimension of the housing 2, and the height dimension h, the front-rear dimension d, and the lateral dimension w of the cover member 6 shown in FIGS. it can. As a result, the size of the outdoor unit 1 that connects a plurality of indoor units can be reduced.

  Next, fixation of the liquid side extending part 32L to the gas side extending part 32G will be described with reference to FIGS. A cylindrical buffer member 33 is fitted into a fixed portion 321L formed by bending the upper portion of the liquid side extending portion 32L into a crank shape. The fixing portion 321L is applied to the gas side extending portion 32G via the buffer member 33, and the buffer member 33 and the gas side extending portion 32G are bound and bundled together by a binder or the like (not shown), whereby the gas side extending portion 32G is liquidated. The side extending portion 32L is fixed. The buffer member 33 is made of, for example, a material that blocks heat conduction such as hard rubber and absorbs vibration. The bent shape of the liquid side extending portion 32L is not limited to the crank shape, and may be any other shape as long as it is bent along the gas side extending portion 32G.

  When the connection port 4 having the number of liquid pipe connection portions 42L corresponding to the number of indoor units connected to the outdoor unit 1 (six in this embodiment) is provided, the liquid header portion 31L is disposed at the top. It is necessary to extend to the position of the pipe connecting portion 42L. In general, the liquid header portion 31L is thinner and smaller in inner diameter than the gas header portion 31G, so the liquid header portion 31L has an impact applied by vibration or dropping of the outdoor unit 1 compared to the gas header portion 31G. Insufficient strength against force. However, in the outdoor unit 1 of the present embodiment, the liquid header portion 31L is provided with the liquid side extending portion 32L having the fixing portion 321L, the gas header portion 31G is provided with the gas side extending portion 32G, and the gas side extending portion 32G and the liquid side are provided. By fixing the fixing portion 321L of the extending portion 32L via the buffer member 33, it is possible to ensure the strength of the liquid header portion 31L with respect to the impact force applied by vibration or dropping of the outdoor unit 1.

  In the outdoor unit 1 of this embodiment, instead of bending the liquid side extending portion 32L of the liquid header portion 31L, the gas side extending portion 32G and the liquid side extending portion 32L are bent by bending the gas side extending portion 32G of the gas header portion 31G. Even if it is fixed via the buffer member 33, it is possible to secure the strength against the impact force applied by the vibration or dropping of the outdoor unit 1 of the liquid header portion 31L, but the liquid header portion 31L compared to the gas header portion 31G Since the thickness is smaller and the inner diameter is smaller, it is easier to work by bending the liquid side extending portion 32L of the liquid header portion 31L. Further, by fixing the gas side extending portion 32G and the liquid side extending portion 32L via the buffer member 33, not only the liquid header portion 31L but also an impact force applied by vibration or dropping of the outdoor unit 1 of the gas header portion 31G. It is also possible to ensure the strength against.

  Further, instead of fitting the buffer member 33 into the liquid side extending portion 32L, it may be fitted into the gas side extending portion 32G. However, as in the outdoor unit 1 of the present embodiment, when the buffer member 33 is fitted into the liquid side extending portion 32L of the liquid header portion 31L having a small inner diameter, the buffer member 33 is fitted into the gas side extending portion 32G. Compared to the buffer member 33, the material of the buffer member 33 can be saved. Furthermore, by interposing the buffer member 33 between the gas side extending part 32G and the liquid side extending part 32L, heat exchange between the gas side extending part 32G and the liquid side extending part 32L can be prevented. And the vibration transmitted to the liquid side extending part 32L and the gas side extending part 32G can be absorbed.

  The gas header portion 31G, the liquid header portion 31L, and the connection port 4 that have been described above are covered with a cover member 6 as shown in FIGS. As shown in FIG. 8, the cover member 6 is made of a synthetic resin and formed in a box shape, and is attached to the connection port arrangement panel 25a. When the cover member 6 is attached to the connection port arrangement panel 25a, a drainage portion 62 is provided on the lower surface portion 61 arranged below the connection port 4. The drainage part 62 is arrange | positioned under the space a of the connection port 4, and receives the dew condensation water dripped below from the liquid header part 31L and each liquid branch pipe 43L.

  The drainage part 62 has an inclined part 621 and a drainage channel 622. The inclined portion 621 is inclined downward from the right end of the lower surface portion 61 of the cover member 6 toward the left side (connection port arrangement panel 25a side), and is inclined downward from the front to the rear of the lower surface portion 61. Is formed. That is, the inclined portion 621 is formed so that the condensed water dripped downward from the liquid header portion 31L and each liquid branch pipe 43L is collected to the rear and to the left of the lower surface portion 61.

  The drainage channel 622 is a groove having a U-shaped cross section formed so as to be recessed from the inclined portion 621 to the left and to the left of the inclined portion 621. The left end of the drainage channel 622 is formed so as to open to the left end of the inclined portion 621, and when the cover member 6 is attached to the connection port arrangement panel 25a, the left end of the drainage channel 622 is outdoor as shown in FIG. It is arranged above the bottom plate 21 of the machine 1.

  When the cover member 6 having the drainage part 62 described above is attached to the connection port arrangement panel 25a, condensed water that drops downward from the liquid header part 31L and the liquid branch pipes 43L drops on the inclined part 621. The condensed water dripped onto the inclined portion 621 flows through the inclined portion 621, is collected in the drainage channel 622, and is discharged from the drainage channel 622 to the bottom plate 21 of the outdoor unit 1. The condensed water collected on the bottom plate 21 is discharged to the outside of the outdoor unit 1 through a drain port (not shown) formed on the bottom surface of the bottom plate 21 or a drain hose (not shown) connected to the drain port. As a result, the dew condensation water can be collected on the bottom plate 21 and discharged regardless of the installation form such as the ground installation, the veranda installation, and the hanging installation of the outdoor unit 1.

  Next, the restriction plate 48 will be described with reference to FIGS. 10 to 12. As shown in FIG. 10, six restriction plates 48 are provided in accordance with the six sets of liquid pipe connection portions 42L and gas pipe connection portions 42G. In the following description, as shown in FIG. 12, the interval dimension of the opposite sides of the main shaft portion 451L of the liquid pipe connecting portion 42L is UL1 (hereinafter referred to as the opposite side dimension UL1), and the interval dimension of the opposite corners is UL2. (Hereinafter referred to as the diagonal dimension UL2), the distance dimension between the opposing sides of the main shaft portion 451G of the gas pipe connecting part 42G is UG1 (hereinafter referred to as the opposite dimension UG1), and the distance dimension between the opposing corners is UG2 (hereinafter referred to as the diagonal dimension UL2). , Described as a diagonal dimension UG2).

  As shown in FIGS. 11 and 12, each regulating plate 48 has a positioning flange 481a, a gas-side notch 482G, and a liquid-side notch 482L in a main body 481 made of a rectangular steel plate. The main body 481 has two screw holes 481e for attaching the regulating plate 48 to the union plate 472.

  The main body 481 has one surface as a mounting surface 481b and the other surface as a back surface 481c. The mounting surface 481b is a surface that comes into close contact with the mounting member 47 when the regulation plate 48 is mounted on the mounting member 47 and the groove portion 453G of the gas pipe connection portion 42G and the groove portion 453L of the liquid side connection portion 42L.

  The positioning flange 481a is formed by bending one long side end of the main body 481 toward the back surface 481c. The bending dimension of the positioning flange 481a (the height dimension of the positioning flange 481a) is a dimension corresponding to the height of the positioning protrusion 472b provided on the mounting member 47.

  The gas side notch 482G is provided in the lower part of the main body part 481 in FIG. 11, and in the right part of the main body part 481 in FIG. The gas side cutout 482G is formed by cutting out the main body 481 from the insertion side end 481d, which is the long side end opposite to the long side where the positioning flange 481a is formed, toward the positioning flange 481a. The Specifically, the gas-side notch 482G is formed in a U-shape as a whole by forming a semicircular end on the positioning flange 481a side.

  A gas-side axial regulating surface 483GS having a step difference from the mounting surface 481b, a mounting surface 481b, and a peripheral portion of the U-shaped gas side notch 482G are raised from the mounting surface 481b toward the back surface 481c. A gas side rotation regulating wall 483G that connects the gas side axial direction regulating surfaces 483GS is formed. In addition, the gas side groove fitting rib 484G is formed by bending the end facing the insertion side end 481d side of the semicircular portion of the gas side axial regulating surface 483GS to the back surface 481c side.

  The diameter dimension HG2 of the gas side groove fitting rib 484G is set to be slightly larger than the diameter dimension UG3 of the groove part 453G of the gas pipe connection part 42G. The height dimension of the gas side groove fitting rib 484G is set to be slightly smaller than the width dimension of the groove part 453G of the gas pipe connection part 42G. A part (corner portion) of the gas side groove fitting rib 484G on the insertion side end portion 481d side is cut obliquely to form a gas side groove introduction portion 484GI.

  The width dimension HG1 of the gas side rotation restricting wall 483G on the insertion side end 481d side (the opening dimension of the gas side notch 482G) is slightly larger than the opposite side dimension UG1 of the main shaft portion 451G of the gas pipe connecting portion 42G. The dimension is slightly smaller than the diagonal dimension UG2 of the main shaft portion 451G. That is, the dimensional relationship between the gas side rotation regulating wall 483G and the main shaft portion 451G is UG1 <HG1 <UG2.

  The gas side axial direction regulating surface 483GS is a surface parallel to the mounting surface 481b, and when the gas side notch portion 482G is inserted into the groove portion 453G of the gas pipe connection portion 42G, the side surface of the groove portion 453G of the gas pipe connection portion 42G. It is a face that hits. The gas side rotation regulating wall 483G is a surface on which the corner of the main shaft portion 451G of the gas pipe connection portion 42G hits when the gas side cutout portion 482G is inserted into the groove portion 453G of the gas pipe connection portion 42G. The gas side groove fitting rib 484G is a part that fits into the groove part 453G of the gas pipe connection part 42G when the gas side notch part 482G is inserted into the groove part 453G of the gas pipe connection part 42G.

  The liquid-side notch 482L is provided in the upper part of the main body part 481 in FIG. 11, and in the left part of the main body part 481 in FIG. The liquid side cutout 482L is formed by cutting out the main body 481 from the insertion side end 481d, which is the long side end opposite to the long side where the positioning flange 481a is formed, toward the positioning flange 481a. The Specifically, the liquid-side cutout 482L is formed in a U-shape as a whole by forming the end on the positioning flange 481a side in a semicircular shape.

  A liquid-side axial regulating surface 483LS having a step difference from the mounting surface 481b, a mounting surface 481b, and a peripheral surface of the liquid-side notch 482L formed in a U shape are raised from the mounting surface 481b toward the back surface 481c. A liquid side rotation restricting wall 483L that connects the liquid side axial direction restricting surfaces 483LS is formed. In addition, the end of the liquid side axial direction regulating surface 483LS facing the insertion side end 481d side of the portion formed in a semicircular shape is bent toward the back surface 481c to form the liquid side groove fitting rib 484L.

  The diameter dimension HL2 of the liquid side groove fitting rib 484L is slightly larger than the diameter dimension UL3 of the groove part 453L of the liquid pipe connection part 42L. The height dimension of the liquid side groove fitting rib 484L is slightly smaller than the width dimension of the groove part 453L of the liquid pipe connecting part 42L. A part (corner portion) of the end portion on the insertion side end portion 481d side of the liquid side groove fitting rib 484L is obliquely cut to form a liquid side groove introduction portion 484LI.

  The width dimension HL1 of the liquid side rotation restricting wall 483L on the insertion side end 481d side (opening dimension of the liquid side cutout part 482L) is slightly larger than the opposite side dimension UL1 of the main shaft part 451L of the liquid pipe connection part 42L, and The dimension is slightly smaller than the diagonal dimension UL2 of the main shaft portion 451L. That is, the dimensional relationship between the liquid side rotation regulating wall 483L and the main shaft portion 451L is UL1 <HL1 <UL2.

  The liquid side axial direction regulating surface 483LS is a surface parallel to the mounting surface 481b, and when the liquid side notch 482L is inserted into the groove 453L of the liquid pipe connecting portion 42L, the side surface of the groove 453L of the liquid pipe connecting portion 42L. It is a face that hits. The liquid side rotation regulating wall 483L is a surface on which the corner of the main shaft portion 451L of the liquid pipe connection portion 42L hits when the liquid side cutout portion 482L is inserted into the groove portion 453L of the liquid pipe connection portion 42L. The liquid side groove fitting rib 484L is a part that fits into the groove part 453L of the liquid pipe connection part 42L when the liquid side cutout part 482L is inserted into the groove part 453L of the liquid pipe connection part 42L.

  A procedure for attaching the liquid pipe connecting portion 42L and the gas pipe connecting portion 42G to the union plate 472 using the restriction plate 48 configured as described above will be described with reference to FIGS. First, as shown in FIG. 11, the main shaft portion 451L of the liquid pipe connecting portion 42L is inserted into the liquid side insertion hole 472L from the front surface 472a side to the rear side of the union plate 472, and the main shaft portion of the gas pipe connecting portion 42G is inserted. 451G is inserted through the gas side insertion hole 472G. Next, the mounting surface 481b of the regulating plate 48 faces the front surface 472a of the union plate 472, the liquid side notch 482L is aligned with the groove portion 453L of the liquid pipe connecting part 42L, and the gas side notch 482G is aligned with the gas pipe connecting part 42G. The restriction plate 48 is slid from left to right in accordance with the groove portion 453G.

  When the restriction plate 48 is slid, the mounting surface 481 b of the restriction plate 48 rides on the positioning protrusion 472 b of the union plate 472, so that the restriction plate 48 is slid in an inclined state with respect to the union plate 472. Then, the liquid side groove fitting rib 484L is fitted into the groove part 453L of the liquid pipe connecting part 42L, and the gas side groove fitting rib 484G is fitted into the groove part 453G of the gas pipe connecting part 42G. When the liquid side groove fitting rib 484L is fitted to the groove part 453L of the liquid pipe connecting part 42L and the gas side groove fitting rib 484G is fitted to the groove part 453G of the gas pipe connecting part 42G, the mounting surface 481b of the regulation plate 48 is The mounting surface 481b of the restriction plate 48 is disposed along the front surface 472a of the union plate 472 so as to get over the positioning protrusion 472b of the union plate 472. At this time, the positioning flange 481a of the main body 481 of the restriction plate 48 hits the positioning protrusion 472b of the union plate 472, and the restriction plate 48 is positioned.

  Then, after positioning the regulating plate 48 against the positioning projection 472b of the union plate 472, the regulating plate 48 is attached to the union plate 472 with two screws. As a result, the liquid pipe connecting portion 42L and the gas pipe connecting portion 42G are attached to the union plate 472 by the restriction plate 48.

  Next, the liquid side flare nut 44La is attached to the screw portion 452L of the liquid pipe connection portion 42L protruding rearward from the liquid side insertion hole 472L, and the gas pipe connection portion 42G protruding rearward from the gas side insertion hole 472G. The gas side flare nut 44Ga is attached to the screw portion 452G.

  As described above, according to the outdoor unit 1 of the present embodiment, when the liquid pipe connection portion 42L and the gas pipe connection portion 42G are attached to the union plate 472 by the restriction plate 48, the groove portion 453L of the liquid pipe connection portion 42L The liquid side groove fitting rib 484L is fitted, and the side surface of the groove part 453L of the liquid pipe connecting part 42L is in contact with the liquid side axial direction regulating face 483LS, so that the movement of the liquid pipe connecting part 42L in the front-rear direction can be restricted. . Further, since the groove portion 453G of the gas pipe connection portion 42G and the gas side groove fitting rib 484G are fitted, and the side surface of the groove portion 453G of the gas pipe connection portion 42G is in contact with the gas side axial restriction surface 483GS, the gas pipe connection portion 42G The movement in the front-rear direction can be restricted.

  Further, as described above, when the restriction plate 48 is slid and the restriction plate 48 is attached to the union plate 472, the groove part 453L of the liquid pipe connection part 42L, and the groove part 453G of the gas pipe connection part 42G, the restriction plate 48 is unioned. Since it rides on the positioning protrusion 472b of the plate 472 and inclines, the liquid side groove fitting rib 484L and the gas side groove fitting rib 484G are also inclined with respect to the groove part 453L of the liquid pipe connection part 42L and the groove part 453G of the gas pipe connection part 42G. It becomes. However, since the liquid side groove fitting rib 484L has the liquid side groove introducing portion 484LI and the gas side groove fitting rib 484G has the gas side groove introducing portion 484GI, the liquid side groove introducing rib 484L is introduced. As compared with the case where the gas side groove fitting rib 484G is not provided with the gas side groove fitting portion 484GI without the portion 484LI, the liquid side groove fitting rib 484L can be easily inserted into the groove portion 453L and the gas side groove is provided. The fitting rib 484G can be easily inserted into the groove portion 453G of the gas pipe connecting portion 42G, and the restriction plate 48 can be smoothly attached.

  The dimensional relationship between the liquid side rotation restricting wall 483L of the liquid side notch 482L and the main shaft portion 451L of the liquid pipe connecting portion 42L is UL1 <HL1, and the gas side rotation restricting wall 483G of the gas side notch 482G The dimensional relationship between the gas pipe connecting portion 42G and the main shaft portion 451G is UG1 <HG1. For this reason, it is possible to easily insert the liquid-side cutout 482L into the groove 453L of the liquid pipe connection 42L and the gas-side cutout 482G into the groove 453G of the gas pipe connection 42G. Further, the dimensional relationship between the liquid side rotation restricting wall 483L of the liquid side notch 482L and the main shaft portion 451L of the liquid pipe connecting portion 42L is HL1 <UL2, and the gas side rotation restricting wall 483G of the gas side notch 482G and The dimensional relationship between the gas pipe connecting portion 42G and the main shaft portion 451G is HG1 <UG2. For this reason, when the liquid side flare nut 44La is screwed to the screw part 452L of the liquid pipe connection part 42L, and the gas side flare nut 44Ga is screwed to the screw part 452G of the gas pipe connection part 42G, the liquid pipe connection part 42L. Even if a large rotational torque is applied to the gas pipe connection part 42G with a wrench or the like, the corners of the main shaft part 451L of the liquid pipe connection part 42L and the main shaft part 451G of the gas pipe connection part 42G are separated from the liquid side rotation regulating wall 483L. When the gas side rotation regulating wall 483G hits, the movement of the liquid pipe connection part 42L and the gas pipe connection part 42G in the rotational direction is restricted.

  When a large rotational torque is applied when the liquid side flare nut 44La is screwed to the screw part 452L of the liquid pipe connection part 42L or when the gas side flare nut 44Ga is screwed to the screw part 452G of the gas pipe connection part 42G. Conventionally, the main shaft portion 451L of the liquid pipe connection portion 42L and the main shaft portion 451G of the gas pipe connection portion 42G abut against the liquid side insertion hole 472L and the gas side insertion hole 472G of the union plate 472, and a large force is applied to the union plate 472. Then, the union plate 472 may be deformed. If the liquid side insertion hole 472L or the gas side insertion hole 472G is deformed due to the deformation of the union plate 472, there is a possibility that the main shaft portion 451L of the liquid pipe connection portion 42L or the main shaft portion 451G of the gas pipe connection portion 42G cannot be stopped. is there. If a large rotational torque is continuously applied to the liquid side flare nut 44La and the gas side flare nut 44Ga in a state where the rotation cannot be stopped, the liquid branch pipe 43L and the gas pipe connection connected to the main shaft portion 451L of the liquid pipe connection portion 42L. Stress may be applied to the gas branch pipe 43G connected to the main shaft portion 451G of the section 42G, and the liquid branch pipe 43L and the gas branch pipe 43G may be deformed or damaged. However, in the outdoor unit 1 of this embodiment, the liquid-side rotation restricting wall 483L of the liquid-side notch 482L and the gas-side rotation restricting wall 483G of the gas-side notch 482G are connected to the main shaft portion 451L and the gas pipe of the liquid pipe connecting portion 42L. Since the corner portion of the main shaft portion 451G of the connection portion 42G hits and the force applied to the union plate 472 is reduced, the deformation of the union plate 472 can be suppressed.

  Furthermore, according to the outdoor unit 1 of the present embodiment, the regulation plate 48 has the liquid side groove fitting rib 484L in the liquid side notch 482L, and the gas side groove fitting rib 484G in the gas side notch 482G. Therefore, when a force due to rotational torque is applied to the liquid side rotation restricting wall 483L of the liquid side notch 482L or the gas side rotation restricting wall 483G of the gas side notch 482G, the liquid side notch 482L or the gas side It is possible to prevent the cutout portion 482G from being deformed in the direction in which it expands (HG1 or HL1 increases).

  Since the main shaft portion 451G of the gas pipe connection portion 42G and the main shaft portion 451L of the liquid pipe connection portion 42L only need to be able to restrict movement in the rotational direction by the restriction plate 48, the outer cross-sectional shape is formed in a regular hexagonal shape. Not limited to this, it may be formed in another regular polygon shape. However, the cross-sectional shape of the outer shape of each main shaft portion is preferably a regular polygon shape having an even number of corners rather than a regular polygon shape having an odd number of corners.

When the cross-sectional shape of each main shaft portion is a regular polygon having an odd number of corners, each main shaft portion does not have opposing parallel sides. More specifically, a corner exists at a location facing one side. Therefore, when the side surface of the groove portion of each main shaft portion hits the axial restriction surface of each notch portion, the side surface of the groove portion corresponding to the side of the main shaft portion hits one of the left and right axial restriction surfaces, and the other shaft The side surface of the groove corresponding to the corner of the main shaft portion comes into contact with the direction regulating surface. That is, the area which receives the side surface of the groove portion of the main shaft portion differs between the left and right axial direction regulating surfaces.
In this way, when the area receiving the side surface of the groove portion of the main shaft portion is different on the left and right axial restriction surfaces, the right and left sides are restricted when restricting the movement in the axial direction (front-rear direction) of each connection portion on each axial restriction surface. Since the force applied to the axial restriction surface is different, there is a risk that the axial movement (front-rear direction) of each connecting portion cannot be stably controlled when a large force is applied to each connecting portion in the axial direction.

  On the other hand, when the cross-sectional shape of each main shaft portion is a regular polygonal shape having an even number of corners, each main shaft portion has a shape having parallel sides facing each other. For example, as shown in FIG. 12, the main shaft portion 451G of the gas pipe connection portion 42G and the main shaft portion 451L of the liquid pipe connection portion 42L of the present embodiment have a regular hexagonal cross-sectional shape, respectively. The opposite side having the dimension UL1 is parallel. In this case, the width dimension of the side surface of the groove portion 453G of the main shaft portion 451G and the width dimension of the side surface of the groove portion 453L of the main shaft portion 451L (for example, the value obtained by subtracting the diameter size UG3 from the opposite side dimension UG1 and dividing by 2 in the gas pipe connection portion 42G) ) Is the same on the left and right. For this reason, the gas side axial restriction surface 483GS that receives the side surface of the groove portion 453G of the main shaft portion 451G and the liquid side axial direction restriction surface 483LS that receives the side surface of the groove portion 453L of the main shaft portion 451L have the same left-right width dimension. That is, the gas side axial restriction surface 483GS receives the side surface of the groove portion 453G of the main shaft portion 451G equally on the left and right, and the liquid side axial direction restriction surface 483LS receives the side surface of the groove portion 453L of the main shaft portion 451L evenly on the left and right. The movement in the axial direction (front-rear direction) of the gas pipe connection part 42G and the liquid pipe connection part 42L can be restricted.

As described above, when the cross-sectional shape of each main shaft portion is a regular polygonal shape having an even number of corners, the movement in the axial direction (front-rear direction) of each connection portion is performed on the axial restriction surface provided in each notch portion of the restriction plate. Can be received evenly from side to side, and the movement of each connecting portion in the axial direction (front-rear direction) can be more stably regulated.
In addition, the gas side insertion hole 472G and the liquid side insertion hole 472L of the union plate 472 have a regular polygon shape in accordance with the regular polygonal shape of the main shaft part 451G of the gas pipe connection part 42G and the main shaft part 451L of the liquid pipe connection part 42L. What is necessary is just to form.

  Further, the groove portion 453G of the gas pipe connection portion 42G and the groove portion 453L of the liquid pipe connection portion 42L are formed by annularly forming a part of the main shaft portion 451G of the gas pipe connection portion 42G and the main shaft portion 451L of the liquid pipe connection portion 42G with a predetermined width. However, the present invention is not limited to this, and it may be formed in a U shape or a C shape.

  Further, in order to connect six indoor units to the outdoor unit 1, six liquid pipe connection parts 42L and six gas pipe connection parts 42G are provided as connection ports 4, but the present invention is not limited to this. Regarding the structure of the gas side notch 482G and the liquid side notch 482L of the regulating plate 48, in order to connect one indoor unit to the outdoor unit 1, the liquid pipe connection 42L and the gas pipe connection 42G as the connection port 4 are used. In this case, one regulation plate 48 is attached to a union plate provided with one gas side insertion hole 472G and one liquid side insertion hole 472L.

DESCRIPTION OF SYMBOLS 1 Outdoor unit 2 Housing | casing 21 Bottom plate 21a Leg part 22 Front panel 221 Blowing grill 22a Blowing panel 22b Service panel 25 Side panel 252 Notch part 25a Connection port arrangement panel 25b Conduit panel 26 Top plate 27 Prop 3G Gas refrigerant piping 31G Gas header part 32G Gas side extension part 3L Liquid refrigerant pipe 31L Liquid header part 32L Liquid side extension part 321L Fixing part 33 Buffer member 4 Connection port 42G Gas pipe connection part 42L Liquid pipe connection part 43G Gas branch pipe 43L Liquid branch pipe 43La Bending point 44G Gas side Connection portion 44Ga Gas side flare nut 44L Liquid side connection portion 44La Liquid side flare nut 45G Gas side union 451G Main shaft portion 452G Screw portion 453G Groove portion 45L Liquid side union 451L Main shaft portion 452L Screw portion 453L Groove portion 6L expansion valve 47 mounting member 471 screwing plate 472 union plate 472a front surface 472b positioning projection 472G gas side insertion hole 472L liquid side insertion hole 48 regulating plate 481 main body part 481a positioning flange 481b mounting surface 481d back side hole 481d insertion side end 481d insertion side end part 481d 482G Gas side notch portion 482L Liquid side notch portion 483G Gas side rotation restricting wall 483GS Gas side axial restricting surface 483L Liquid side restricting wall 483LS Liquid side axial restricting surface 484G Gas side groove fitting rib 484GI Gas side groove introducing portion 484L Liquid side groove Fitting rib 484LI Liquid side groove introduction part 6 Cover member 61 Lower surface part 62 Drainage part 621 Inclination part 622 Drainage channel C Compressor E Outdoor heat exchanger F Blower fan U Electrical component unit M Motor MF Motor support HC Heat exchange Chamber MC Machine room w Lateral dimension d Longitudinal dimension h Height dimension a Space HL1 Width dimension HL2 Diameter UL1 Opposite side spacing dimension UL2 Opposing corner spacing dimension UL3 Diameter HG1 Width dimension HG2 Diameter UG1 Opposite Spacing dimension UG2 Opposite corner spacing dimension UG3 Diameter

Claims (2)

A casing that houses an outdoor unit refrigerant circuit having a compressor, an outdoor heat exchanger, a liquid refrigerant pipe, and a gas refrigerant pipe; and each liquid pipe that is disposed on a side surface of the casing and connected to each of the plurality of indoor units. An outdoor unit of an air conditioner including a connection port that connects to the liquid refrigerant pipe and connects each gas pipe connected to each of the plurality of indoor units to the gas refrigerant pipe,
The connection port has a plurality of gas pipe connection parts, a plurality of liquid pipe connection parts, a plurality of gas branch pipes, a plurality of liquid branch pipes, a plurality of expansion valves, and an attachment member,
Each gas pipe connection part has a gas side union to which the gas branch pipe is connected, and a gas side connection part to which the gas pipe is connected,
Each of the liquid pipe connection parts has a liquid side union to which the liquid branch pipe is connected, and a liquid side connection part to which the liquid pipe is connected,
The mounting member has the plurality of liquid pipe connection portions and the plurality of gas pipe connection portions arranged in a line alternately and vertically in the casing, and each liquid side connection portion and each gas side connection. Arranged so that the part faces the rear side of the housing,
Each gas branch pipe has one end connected to the gas refrigerant pipe and the other end connected to the gas side union.
Each liquid branch pipe has one end connected to the liquid refrigerant pipe and the other end connected to the liquid side union.
Each expansion valve is assembled to each liquid branch pipe,
The gas refrigerant pipe has a gas header portion to which the gas branch pipes are connected,
The liquid refrigerant pipe has a liquid header part to which the liquid branch pipes are connected,
The gas header part has a gas side extension part formed by extending upward from a connection part with the gas header part of the gas branch pipe arranged at the top,
The liquid header part has a liquid side extending part formed by extending upward from a connection part with the liquid header part of the liquid branch pipe arranged at the top,
The gas side stretched part and the liquid side stretched part are fixed,
An air conditioner outdoor unit characterized by the above. A part of the liquid side stretched part is bent along the gas side stretched part,
The outdoor unit for an air conditioner according to claim 1.

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