CN101300454A - Closing valve installation structure, and outdoor unit for air conditioner, having the installation structure - Google Patents

Abstract

The invention can improve operation of joint work between the stop valve in the outdoor unit of an air conditioner and refrigerant communicating pipes. The stop valve (27) is installed in the outdoor unit (2) of the air conditioner (1) for fixing stop valves (18, 19), having base portions (30, 40) and a fixing portion (50).The stop valves (18, 19) is connected with the indoor unit (3) of the air conditioner (1) through the refrigerant communicating pipes. The base portions (30, 40) extend upwards from the under frame (26) of the outdoor unit (2). The fixing portion (50) is connected with the base portions (30, 40) for fixing the stop valves (18, 19). In addition, a gap exists below the stop valves (18, 19) when fixed on the fixing portion (50).

Description

Closing valve installation structure and outdoor unit of air conditioner having the same structure

technical field

The present invention relates to a stop valve installation structure for fixing a stop valve in an outdoor unit of an air conditioner and an outdoor unit of an air conditioner having the structure.

Background technique

Among air conditioners used in buildings such as buildings and ordinary houses, split-type air conditioners in which an indoor unit and an outdoor unit are connected by refrigerant communication pipes are widely used. For example, in a multi-type split-type air conditioner installed in a building, an outdoor unit is placed on the roof, etc., and an indoor unit is installed on the ceiling of each floor, etc., and the gas-side refrigerant communicates with the piping and the liquid-side refrigerant. The refrigerant communication pipe connects the outdoor unit and the indoor unit to form a refrigerant circuit.

In such an outdoor unit of an air conditioner, a gas-side shutoff valve and a liquid-side shutoff valve are provided at the ends of an internal refrigerant circuit. After the outdoor unit and the indoor unit are installed on site, these shutoff valves are connected to the gas side refrigerant communication pipes and the liquid side refrigerant communication pipes from the indoor units, and then the shutoff valves are switched from the closed state to the open state. Thus, the refrigerant can flow between the outdoor unit and the indoor unit.

However, as shown in Patent Document 1, the gas-side shutoff valve and the liquid-side shutoff valve of the conventional outdoor unit are fixed by a mounting plate erected on the chassis of the outdoor unit. Such a mounting plate is not clearly shown in the drawings of Patent Document 1, but often has a shape roughly like the mounting plate 100 shown in FIG. 9 . The mounting plate 100 is bent into an L-shape by bending a plate-shaped part, and the bent part 101 is in surface contact with the chassis of the outdoor unit, and the other part 102 is formed with notches 102a, 102b for inserting the stop valve.

Patent Document 1: Japanese Patent Laid-Open No. 2004-37007

The technical problem to be solved by the invention

However, when the shutoff valve is fixed to such a mounting plate, it may be difficult to join the shutoff valve and the refrigerant communication pipe. For example, when the shutoff valve and the refrigerant communication pipe are joined by brazing (joining metal to metal using solder and heat), flames from a torch or the like in contact with the joint may reach the mounting plate. In addition, since the space is divided in the front and rear of the mounting plate, the working space is limited. As a result, the direction of the hand of the operator performing the joining work and the angle of the moving tool are restricted, which may cause the operator to do the joining work. will become unfree.

Contents of the invention

An object of the present invention is to improve the workability of the joint operation between the stop valve and the refrigerant communication pipe in the outdoor unit of the air conditioner.

Technical solutions adopted to solve technical problems

The stop valve mounting structure of the first invention is a structure for fixing a stop valve in an outdoor unit of an air conditioner, and has a base and a fixing part. The stop valve is connected to the indoor unit of the air conditioner through a refrigerant communication pipe. The base extends upward from the chassis of the outdoor unit. The fixing part is continuous with the base part, and fixes the stop valve. In addition, there is a gap below the stop valve in a state of being fixed to the fixing portion.

In this stop valve mounting structure, the stop valve is fixed by the fixing portion continuous to the base extending upward from the chassis of the outdoor unit of the air conditioner. There is no base under the stop valve fixed to the fixed part, that is, under the part of the fixed part where the stop valve is fixed, and the gap is enlarged. That is, the stop valve mounting structure mainly includes a columnar base standing on the chassis of the outdoor unit and a beam-shaped fixing portion supported by the base. In addition, the base portion and the fixing portion may be formed integrally or separately.

However, when the outdoor unit of the air conditioner is installed on site, it is necessary to perform the work of joining the stop valve to the refrigerant communication piping connected to the indoor unit. At this time, for example, when the stop valve mounting structure is formed by using a substantially rectangular plate-shaped member as in the past, parts other than the brazing position of the stop valve mounting structure may be burned by flames such as a torch, or the space for the stop valve mounting may be blocked. The construction itself is separated so that the working space is limited. On the other hand, in the outdoor unit employing the shut-off valve mounting structure of the first invention, since the space below the shut-off valve is an open space, the above-mentioned problems can be eliminated.

In this manner, the shutoff valve attachment structure can improve the workability of the joint work between the shutoff valve and the refrigerant communication pipe in the outdoor unit of the air conditioner.

In the shut-off valve installation structure of the second invention, in the shut-off valve installation structure of the first invention, the base is formed of two columnar members. The fixing part is continuous with both columnar members.

In this stop valve mounting structure, the beam-shaped fixing portion is continuous with the two columnar members. That is, the shut-off valve installation structure has a gate shape as a whole. Therefore, in this shutoff valve installation structure, an open space can be formed under the shutoff valve to improve the workability of the joining operation between the shutoff valve and the refrigerant communication pipe, and improve the overall strength.

In the shut-off valve mounting structure of the third invention, in the shut-off valve mounting structure of the first invention or the second invention, the base portion and the fixing portion can be divided.

In general, the number and size of shutoff valves installed on the outdoor unit of the air conditioner vary depending on the horsepower of the air conditioner, whether the air conditioner is a dual-purpose type, or the like. Therefore, if the model of the air conditioner is different, the shape of the stop valve mounting structure to be used is also different.

On the other hand, in the shut-off valve mounting structure of the third invention, the columnar base and the beam-shaped fixing portion are formed separately and can be divided. Therefore, when developing a new type of air conditioner, only the fixing part can be redesigned, and the base part can be used in common.

The shut-off valve installation structure of 4th invention is the shut-off valve installation structure in any one of 1st invention thru|or 3rd invention, in which a base frame has a raised part raised toward the inside of an outdoor unit. The base has an engaging portion. The engaging portion engages with at least a part of the contour of the raised portion.

In this shut-off valve mounting structure, a specific portion (engaging portion) of the base engages with at least a portion of the raised portion provided on the chassis. Therefore, in the shut-off valve installation structure, the positions between the shut-off valve installation structure and the base frame of the outdoor unit are easily aligned, and the shut-off valve installation structure can be more firmly fixed on the base frame.

The outdoor unit of the air conditioner of 5th invention has a casing, a stop valve, and a stop valve installation structure. The housing has a chassis. The stop valve is connected to the indoor unit through the refrigerant communication pipe. The shut-off valve mounting structure is used to secure the shut-off valve. The stop valve installation structure has a base and a fixing part. The base extends upward from the chassis. The fixing part is continuous with the base part, and fixes the stop valve. In addition, there is a gap below the stop valve.

In the outdoor unit of this air conditioner, the shutoff valve is fixed by a shutoff valve attachment structure. In this stop valve mounting structure, the stop valve is fixed by the fixing portion continuous with the base extending upward from the chassis of the outdoor unit. There is no base under the stop valve fixed to the fixed part, that is, under the part of the fixed part where the stop valve is fixed, and the gap is enlarged. That is, the stop valve installation structure mainly includes a column-shaped base standing on the chassis of the outdoor unit and a beam-shaped fixing portion supported by the base. In addition, the base portion and the fixing portion may be formed integrally or separately.

However, when the outdoor unit of the air conditioner is installed on site, it is necessary to perform the work of joining the stop valve to the refrigerant communication piping connected to the indoor unit. At this time, for example, when the stop valve mounting structure is formed by using a substantially rectangular plate-shaped member as in the past, parts other than the brazing position of the stop valve mounting structure may be burned by flames such as a torch, or the space for the stop valve mounting may be blocked. The construction itself is separated so that the working space is limited. On the other hand, in the outdoor unit of the fifth invention, since the lower part of the stop valve is an open space, the above-mentioned problems can be eliminated.

As described above, in this outdoor unit, the workability of the joining operation between the stop valve and the refrigerant communication pipe can be improved.

The outdoor unit of the air conditioner of the sixth invention is the outdoor unit of the air conditioner of the fifth invention, wherein the shutoff valve includes a gas side shutoff valve and a liquid side shutoff valve. The gas-side shutoff valve and the liquid-side shutoff valve are arranged so that the gas-side shutoff valve is closer to the front side than the liquid-side shutoff valve in plan view.

In the outdoor unit of this air conditioner, the gas side shutoff valve and the liquid side shutoff valve are fixed by a shutoff valve mounting structure. At this time, the gas side shutoff valve is shifted toward the front side of the outdoor unit with respect to the liquid side shutoff valve. In this way, in this outdoor unit, since the gas side shutoff valve that closes the pipe thicker than the liquid side shutoff valve is located on the front side, the workability of the joint operation between the shutoff valve and the refrigerant communication pipe can be further improved. .

Invention effect

In the stop valve attachment structure of the first invention, the stop valve is fixed by the fixing portion continuous to the base extending upward from the chassis of the outdoor unit of the air conditioner. There is a gap below the stop valve in the state of being fixed to the fixing part, that is, below the part of the fixing part to which the stop valve is fixed. That is, the stop valve installation structure mainly includes a column-shaped base standing on the chassis of the outdoor unit and a beam-shaped fixing portion supported by the base. Thus, in this stop valve mounting structure, since the space below the stop valve becomes an open space, the workability of the joining operation between the stop valve and the refrigerant communication pipe in the outdoor unit of the air conditioner can be improved.

In the stop valve mounting structure of the second invention, the beam-shaped fixing portion is continuous with the two columnar members. That is, the shut-off valve installation structure has a gate shape as a whole. Therefore, in this shutoff valve installation structure, an open space can be formed under the shutoff valve to improve the workability of the joining operation between the shutoff valve and the refrigerant communication pipe, and to improve the overall strength.

In the shut-off valve mounting structure of the third invention, the column-shaped base and the beam-shaped fixing portion are formed separately and can be divided. Therefore, when developing a new type of air conditioner, only the fixing part can be redesigned, and the base part can be used in common.

In the stop valve mounting structure of the fourth invention, the specific portion (engagement portion) of the base engages with at least a portion of the raised portion provided on the chassis. Therefore, in the shut-off valve installation structure, the positions between the shut-off valve installation structure and the base frame of the outdoor unit are easily aligned, and the shut-off valve installation structure can be more firmly fixed on the base frame.

In the outdoor unit of the air conditioner of the fifth invention, the shutoff valve is fixed by the shutoff valve attachment structure. In this stop valve mounting structure, the stop valve is fixed by the fixing portion continuous with the base extending upward from the chassis of the outdoor unit. There is a gap below the stop valve in the state of being fixed to the fixing part, that is, below the part of the fixing part to which the stop valve is fixed. That is, the stop valve installation structure mainly includes a column-shaped base standing on the chassis of the outdoor unit and a beam-shaped fixing portion supported by the base. In this way, in this outdoor unit, since the space below the shutoff valve becomes an open space, the workability of the joining operation between the shutoff valve and the refrigerant communication pipe can be improved.

In the outdoor unit of the air conditioner according to the sixth invention, the gas side shutoff valve and the liquid side shutoff valve are fixed by the shutoff valve attachment structure. At this time, the gas side shutoff valve is shifted toward the front side of the outdoor unit with respect to the liquid side shutoff valve. In this way, in this outdoor unit, since the gas side shutoff valve that closes the pipe thicker than the liquid side shutoff valve is located on the front side, the workability of the joint operation between the shutoff valve and the refrigerant communication pipe can be further improved. .

Description of drawings

Fig. 1 is a refrigerant circuit diagram of an air conditioner including an outdoor unit according to an embodiment of the present invention.

Fig. 2 is an external view of the outdoor unit.

Fig. 3 is a perspective view of the outdoor unit with a part of the casing and the outdoor fan removed.

Fig. 4 is a plan view of the interior of the outdoor unit.

Fig. 5 is a top view of the chassis.

Fig. 6 is a cross-sectional view along line VI-VI of Fig. 5 .

Fig. 7 is a diagram showing the surrounding structure of the stop valve mounting structure.

Fig. 8 is a perspective view of the shut-off valve installation structure.

Fig. 9 is a perspective view of a conventional stop valve mounting structure.

(Symbol Description)

1 air conditioning unit

2 outdoor units

3 indoor units

17a, 17b Refrigerant communication piping

18 Gas side shut-off valve

19 liquid side stop valve

26 chassis

26a bulging part

27 globe valve installation structure

30 right base

32a, 42a engaging part

40 left base

50 fixed parts

Detailed ways

<Structure of air conditioner>

Fig. 1 shows a refrigerant circuit 10 of an air conditioner 1 including an outdoor unit 2 according to an embodiment of the present invention. The air conditioner 1 is a multifunctional air conditioner for a building, and has a structure in which a plurality of indoor units 3 and one or a plurality of outdoor units 2 are connected in parallel. The refrigerant circuit 10 of the air conditioner 1 is mainly composed of a compressor 11, a four-way switching valve 12, an outdoor heat exchanger 13, an outdoor expansion valve 14, an indoor expansion valve 15, and an indoor heat exchanger 16, which form a vapor compression type. refrigeration cycle.

A compressor 11 , a four-way switching valve 12 , an outdoor heat exchanger 13 and an outdoor expansion valve 14 are included in the outdoor unit 2 , and an indoor expansion valve 15 and an indoor heat exchanger 16 are included in the indoor unit 3 . The four-way switching valve 12 and the indoor heat exchanger 16 are connected by a gas-side refrigerant communication pipe 17a, and the outdoor expansion valve 14 and the indoor expansion valve 15 are connected by a liquid-side refrigerant communication pipe 17b. The refrigerant communication pipes 17 a and 17 b are arranged between the outdoor unit 2 and the indoor unit 3 . In addition, an accumulator and other auxiliary equipment are provided in the outdoor unit 2, but are not shown here.

A gas-side shutoff valve 18 and a liquid-side shutoff valve 19 are provided at the ends of the refrigerant circuit inside the outdoor unit 2 . The gas side stop valve 18 is arranged on the side of the four-way switching valve 12 , and the liquid side stop valve 19 is arranged on the side of the outdoor expansion valve 14 . The gas side refrigerant communication pipe 17 a is connected to the gas side shutoff valve 18 , and the liquid side refrigerant communication pipe 17 b is connected to the liquid side shutoff valve 19 . When installing the outdoor unit 2 and the indoor unit 3, these shutoff valves 18 and 19 are closed. After each unit 2, 3 is installed on site and the gas side refrigerant communication pipe 17a and the liquid side refrigerant communication pipe 17b are connected to the shutoff valves 18, 19, the shutoff valves 18, 19 are opened.

The refrigerant circuit 10 of the air conditioner 1 shown in FIG. 1 is a simplified version of the actual circuit. For example, the actual compressor 11 is mostly composed of a variable-capacity compressor (hereinafter referred to as an inverter compressor) for rotational speed control by an inverter and a constant-capacity compressor (hereinafter referred to as a constant-capacity compressor) for on-off control. It is combined according to the size of the object to achieve various horsepowers such as 5, 8, 10, 12, 14, 16, and 18 horsepower (HP). In addition, in this embodiment, the compressor 11 is a combination of one inverter compressor 11a and one constant capacity compressor 11b (see FIG. 4 ).

In addition, an outdoor fan 29 (refer to FIG. 2 ) that blows air toward the outdoor heat exchanger 13 to promote heat exchange between the refrigerant and the air is provided in the outdoor unit 2 .

<Operation of the air conditioner>

The operation of the air conditioner 1 will be described below.

First, during the cooling operation, the four-way switching valve 12 is kept in the state shown by the solid line in FIG. 1 . The high-temperature and high-pressure gas refrigerant output from the compressor 11 flows into the outdoor heat exchanger 13 through the four-way switching valve 12 , exchanges heat with the outdoor air, and condenses and liquefies. The liquefied refrigerant flows through the fully-opened outdoor expansion valve 14, and flows into each indoor unit 3 through the liquid-side refrigerant communication pipe 17b. In the indoor unit 3 , the refrigerant is decompressed to a predetermined low pressure in the indoor expansion valve 15 , and then exchanges heat with indoor air in the indoor heat exchanger 16 to evaporate. Next, the indoor air cooled by the evaporation of the refrigerant is blown into the room by an indoor fan (not shown), thereby cooling the room. In addition, the refrigerant evaporated and vaporized in the indoor heat exchanger 16 returns to the outdoor unit 2 through the gas-side refrigerant communication pipe 17 a and is sucked by the compressor 11 .

On the other hand, during the heating operation, the four-way switching valve 12 is kept in the state shown by the dotted line in FIG. 1 . The high-temperature and high-pressure gas refrigerant output from the compressor 11 flows into the indoor heat exchanger 16 of each indoor unit 3 through the four-way switching valve 12, and exchanges heat with indoor air to condense and liquefy. The indoor air heated by the condensation of the refrigerant is blown into the room by the indoor fan to heat the room. The refrigerant liquefied in the indoor heat exchanger 16 returns to the outdoor unit 2 through the liquid-side refrigerant communication pipe 17 b from the fully opened indoor expansion valve 15 . The refrigerant that has returned to the outdoor unit 2 is decompressed to a predetermined low pressure in the outdoor expansion valve 14 , and then exchanges heat with the outdoor air in the outdoor heat exchanger 13 to evaporate. Next, the refrigerant evaporated and vaporized in the outdoor heat exchanger 13 is sucked into the compressor 11 through the four-way switching valve 12 .

However, the indoor expansion valve 15 of the indoor unit 3 that is stopped is closed regardless of the cooling operation or the heating operation, and almost no refrigerant flows through the indoor heat exchanger 16 of the indoor unit 3 .

<Structure of outdoor unit>

Next, the outdoor unit 2 will be described in detail with reference to FIGS. 2 to 9 . In addition, in FIG. 3, FIG. 4, and FIG. 7, illustration of piping etc. is abbreviate|omitted suitably for convenience of description.

FIG. 2 is an external view of the outdoor unit 2, and FIG. 3 is a perspective view of the outdoor unit 2 with a part of the casing and the outdoor fan 29 removed. In FIG. 3 , illustration of the shutoff valves 18 , 19 and the shutoff valve mounting structure 27 is omitted.

The left side panel 22 and the right side panel 24 of the casing are integrally formed with the pillars 81 , 82 , 83 , 84 respectively. Openings 20 are provided on the side panels 22 , 24 for sucking air into the casing of the outdoor unit 2 . The back panel 23 and the front panel 21 of the housing are installed on the outsides of the pillars 81, 84, 82, 83, respectively. The four pillars 81 to 84 extending vertically are connected to each other by the bottom frame 26 near the lower end, the horizontal bar 72 on the upper part, and the motor support stand 73 . The motor 70 for driving the outdoor fan 29 is attached to the motor support stand 73 . The outer peripheral portion of the housing top plate 25 is fixed to the pillars 81-84 or the side panels 22, 24 and the back panel 23, and the top plate 25 forms the outdoor unit 2 together with the substantially cylindrical bell mouth 29a arranged around the impeller of the outdoor fan 29. air outlet. A round hole corresponding to the bell mouth 29a is opened in the top plate 25, and a grid-shaped fan cover (not shown) made of soft steel wire is attached to cover the round hole. A switch box 71 is arranged on the back surface of the front panel 21 , and a control board for controlling the operation of the air conditioner 1 is provided inside the switch box 71 .

(stop valve and chassis)

FIG. 4 is a plan view of the outdoor unit 2 as viewed from the center in the height direction. The base frame 26 supports the compressor 11 , the outdoor heat exchanger 13 , and the like, and plays a role of fixing the shutoff valves 18 and 19 through the shutoff valve mounting structure 27 . The gas side shutoff valve 18 and the liquid side shutoff valve 19 of the outdoor unit 2 are arranged adjacent to each other. The arrangement directions of the gas side shutoff valves 18 and the liquid side shutoff valves 19 form an angle of approximately 45° with respect to both the front panel 21 and the side panel 22 of the casing. That is, the gas-side shutoff valve 18 and the liquid-side shutoff valve 19 are arranged separately, offset in the left-right direction (direction along the front panel 21 ), and offset in the front-rear direction (direction along the left-side panel 22 ). As a result, the stop valves 18, 19 can be easily drawn out from the pipes regardless of whether they are front, rear or left and right, and the installation of the refrigerant communication pipes 17a, 17b (wrapping the two pipes with insulating tape or covering them with a decorative metal plate) is also easy. It can be made thinner and has a beautiful appearance.

FIG. 5 is a plan view of the chassis 26 , and FIG. 6 is a cross-sectional view of the raised portion 26 a formed on the chassis 26 along the VI-VI direction shown in FIG. 5 . In FIG. 5 , the mounting positions of the inverter compressor 11 a , the constant capacity compressor 11 b , and the stop valve mounting structure 27 are shown by dotted lines for reference. On the surface of the chassis 26, a concavo-convex pattern including raised portions 26a is formed in order to properly fix each component. The protruding portion 26 a protrudes toward the interior of the outdoor unit 2 , that is, in a substantially rectangular shape with four corners bent upward, and facilitates alignment between the stop valve mounting structure 27 and the bottom frame 26 . A region 26b surrounding the protruding portion 26a becomes a substantially horizontal plane.

(Globe valve installation structure)

FIG. 7 is a diagram showing the surrounding structure of the shut-off valve mounting structure 27 seen from the upper front, and FIG. 8 is a perspective view of the shut-off valve mounting structure 27 .

The shut-off valve installation structure 27 mainly includes: a right base 30 located on the right side when viewed from the front, a left base 40 located on the left side when viewed from the front, and connecting the vicinity of the upper ends of these bases 30 and 40 so as to be approximately horizontal like a horizontal beam. The fixed part 50 erected. The base parts 30 and 40 and the fixing part 50 can be divided into three parts, and if they are fixed to each other with screws or the like and assembled, they will have a door shape as shown in FIG. 8 .

Next, the right base 30 will be described. In addition, as for the left base part 40, it can be demonstrated similarly by substituting the reference numerals 30-36 with 40-46 in the following description, respectively.

The right side base 30 is aligned with the raised portion 26 a of the chassis 26 so as to stand on the area 26 b of the chassis 26 . The right base portion 30 mainly includes a main body portion 31, a bottom portion 32, a first side wall portion 33, a second side wall portion 34, and a third side wall portion 35, and is formed by bending a metal plate in a predetermined shape. .

The main body portion 31 is a vertically long flat plate-shaped member extending substantially in the vertical direction, and its lower end is continuous with the bottom surface 32 . The bottom portion 32 is a flat plate-shaped member extending substantially in the horizontal direction, and its flat surface is in surface contact with the region 26b of the chassis 26 extending substantially in the horizontal direction. The bottom portion 32 is curved at a portion (engagement portion) 32a close to the contour of the left base portion 40, and this portion 32a engages with the contour of the raised portion 26a of the chassis 26 near one corner of the raised portion 26a. A hole is opened in the vicinity of the center of the bottom surface 32 , and a screw for connecting the bottom surface 32 and the chassis 36 passes through the hole. In addition, a rib 32 b is provided on the bottom surface portion 32 at a position surrounding a thread of a screw to be attached through the hole. With this rib 32b, vibration of the stop valve mounting structure 27 can be minimized when the compressor 11 is in operation.

The first side wall portion 33 is a vertically long plate-shaped member extending substantially vertically, continuous with the side of the main body portion 31 near the left base portion 40 , and its flat surface forms an angle of approximately 90° with the main body portion 31 . The second side wall portion 34 is a vertically elongated plate member extending substantially vertically, continuous with the side of the main body 31 away from the left base 40 , and its flat surface forms an angle of approximately 90° with the main body 31 . The first side wall portion 33 is located in the opposite direction to the bottom surface portion 32 with respect to the main body portion 31 , and the second side wall portion 34 is located in the same direction as the bottom surface portion 32 with respect to the main body portion 31 . The third side wall portion 35 is a horizontally long plate-shaped member extending approximately vertically, continuous with the side of the bottom portion 32 away from the left base portion 40 , and its flat surface forms an angle of approximately 90° with the bottom portion 32 . The bent structure of the right side base 30 and the same left side base 40 can increase the strength of the stop valve mounting structure 27 . In addition, the strength can be further improved by spot welding the overlapping portion 36 of the second side wall portion 34 and the third side wall portion 35 .

Next, the fixing unit 50 will be described.

The fixing portion 50 is formed by bending a single metal plate formed into a predetermined shape. The fixing part 50 is fixed to the upper ends of the base parts 30, 40 at its left and right ends by fastening members such as screws, respectively, and has a shape like a horizontal beam extending horizontally with the base parts 30, 40 as pillars. In order to improve the strength, the fixing part 50 is bent four times at an angle of approximately 90° to make its vertical cross-sectional shape into a mountain shape or even a step shape.

In addition, substantially semicircular notches 51 and 52 are formed on the fixing portion 50 along the upper end thereof. The radius of the notch 51 is larger than the radius of the notch 52 , and the fixed gas side stop valve 18 is inserted into the notch 51 , and the fixed liquid side stop valve 19 is inserted into the notch 52 . In addition, a substantially semicircular notch 53 for receiving a refrigerant filling port is formed on the fixing portion 50 .

Both the pipe connection port 18a of the gas side shutoff valve 18 and the pipe connection port 19a of the liquid side shutoff valve 19 face downward. The stop valves 18, 19 are not joined to the refrigerant communication pipes 17a, 17b by means of taper nuts and flanges, but are joined to the refrigerant communication pipes 17a, 17b by brazing. Thereby, when the stop valve 18, 19 and the refrigerant communication pipe 17a, 17b are joined together on site, screw fastening is not required, workability can be improved, and the possibility of refrigerant leakage can be reduced.

<feature>

(1) The shut-off valve mounting structure 27 is in the shape of a door mainly composed of two columnar bases 30, 40 and a horizontal beam-shaped fixing portion 50 erected on these bases 30, 40, and fixes the shut-off valves 18, 19. The lower part becomes an open space. That is, a working space is ensured for on-site joining work between the shutoff valves 18, 19 and the refrigerant communication pipes 17a, 17b. Therefore, in the outdoor unit 2, the workability of the joining operation between the shutoff valves 18, 19 and the refrigerant communication pipes 17a, 17b can be improved, and the workability of other components located around the shutoff valve mounting structure 27 can be improved. For example, when performing joining work by brazing, a torch for brazing work may be disposed in the open space. In addition, in this case, it is also easy to avoid the problem that the shut-off valve attachment structure 27 itself is burned by the flame of a torch or the like.

In addition, by utilizing this space, other components such as piping can be arranged in the front and rear of the stop valve mounting structure 27 through the door, and the degree of freedom in the arrangement of components can be increased in the design of the outdoor unit 2 . In addition, material cost can be reduced compared with the conventional plate-shaped member.

(2) In this shut-off valve mounting structure 27 , the two columnar bases 30 , 40 and the horizontal beam-like fixing portion 50 are formed separately, and the shut-off valve mounting structure 27 is formed by combining these members 30 , 40 , 50 . Therefore, between a plurality of outdoor units with different models, that is, with different numbers and sizes of stop valves, only the fixing part 50 can be made as a part corresponding to the piping structure of the model, while the base parts 30 and 40 can be GM, when developing a new type of air conditioner, can reduce development costs by cutting mold costs and so on. For example, if it is a fixed part corresponding to a dual-purpose model, then in the fixed part 50 of the present embodiment, another notch that can support special components can be provided on the right side when viewed from the front of the notch 52 .

In addition, when manufacturing the base portions 30, 40 and the fixing portion 50, blanking of the plate material can be efficiently performed, and material costs can be reduced.

(3) On the surface of the chassis 26 of the outdoor unit 2, a raised portion 26a raised upward is formed. In addition, in the stop valve mounting structure 27, the parts 32a, 42a of the base parts 30, 40 are arranged at positions partially engaged with the outline of the raised part 26a. That is, in this outdoor unit 2, the protruding portion 26a of the chassis 26 and the portions 32a, 42a of the bases 30, 40 of the shutoff valve mounting structure 27 have shapes that can be engaged, so that the chassis 26 and the shutoff valve can be easily connected. Positioning between mounting configurations 27 .

In addition, as described above, since the bottom frame 26 and the stop valve mounting structure 27 are easily fixed, the number of connecting parts can be reduced.

<Modification>

In the above-mentioned embodiment, the stop valve mounting structure 27 has a door shape, but the present invention is not limited to this form. For example, the shut-off valve mounting structure may be L-shaped or T-shaped including a columnar base and a horizontal beam-shaped fixing portion supported by the base.

Industrial availability

The present invention can improve the workability of the joint work between the shutoff valve and the refrigerant communication pipe in the outdoor unit of the air conditioner, and is suitable for the shutoff valve installation structure for fixing the shutoff valve in the outdoor unit of the air conditioner and the structure having the same structure Outdoor unit for air conditioning unit.

Claims (6)

1. a stop valve installation constitution (27), be used for fixing stop valve (18,19), described fixedly stop valve (18,19) is arranged in the outdoor unit (2) of aircondition (1), and be communicated with pipe arrangement (17a, 17b) and link to each other with the indoor unit (3) of described aircondition (1) by cold-producing medium, it is characterized in that having:

Base portion (30,40), this base portion (30,40) extends upward from the underframe (26) of described outdoor unit (2); And

Fixed part (50), this fixed part (50) is continuous with described base portion (30,40), described stop valve (18,19) fixed,

There is the space in the below of the described stop valve under the state that is fixed on the described fixed part (50) (18,19).

2. stop valve installation constitution as claimed in claim 1 (27) is characterized in that,

Described base portion (30,40) is formed by two columnar parts,

Described fixed part (50) is continuous with described two columnar part both sides.

3. stop valve installation constitution as claimed in claim 1 or 2 (27) is characterized in that, described base portion (30,40) can be cut apart with described fixed part.

4. as each described stop valve installation constitution (27) in the claim 1 to 3, it is characterized in that,

Described underframe (26) has the protrusion (26a) towards the inner hump of described outdoor unit (2),

Described base portion (30,40) has holding section (32a, 42a), and this holding section (32a, 42a) engages with at least a portion of the profile of described protrusion (26a).

5. the outdoor unit (2) of an aircondition (1) is characterized in that having:

Shell, this shell have underframe (26);

Stop valve (18,19), this stop valve (18,19) is communicated with pipe arrangement (17a, 17b) by cold-producing medium and links to each other with indoor unit (3); And

Stop valve installation constitution (27), this stop valve installation constitution (27) is used for fixing described stop valve (18,19),

Described stop valve installation constitution (27) has:

Base portion (30,40), this base portion (30,40) extends upward from described underframe (26); And

Fixed part (50), this fixed part (50) is continuous with described base portion (30,40), described stop valve (18,19) fixed,

There is the space in below at described stop valve (18,19).

6. the outdoor unit (2) of aircondition as claimed in claim 5 (1) is characterized in that,

Described stop valve (18,19) comprises gas side stop valve (18) and hydraulic fluid side stop valve (19),

Described gas side stop valve (18) and described hydraulic fluid side stop valve (19) are arranged in when overlooking so that described gas side stop valve (18) more leans on the mode front and back of face side to stagger than described hydraulic fluid side stop valve (19).

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