JPH0552476U - Internal and external piping connection structure - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an internal / external pipe connection structure for a casing that has excellent workability in pipe connection work and has a good-looking pipe shape after connection. [Configuration] In the pipe connection structure 1, the external pipe and the internal pipe 4
A pipe connection plate 7 on which pipe joints 8 and 9 for connecting to and are fixedly provided is rotatably provided along a folded portion 17 of a pipe insertion hole 13 formed in the outdoor unit casing 2 and having a circular shape in side view. Has been. As a result, since the mounting angles of the pipe joints 8 and 9 can be changed, these pipe joints 8 and 9 can be changed.
It is possible to easily connect the external pipe connected to the above without bending. In addition, the displacement from the position of the internal pipe 4 due to the change of the positions of the pipe joints 8 and 9 is absorbed by the flexible pipe 6 disposed between them.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to an improvement in a pipe connection structure of a casing such as an outdoor unit casing of an air conditioner.

[0002]

[Prior Art]

For example, in the conventional pipe connection structure 1 _a in the outdoor unit casing 2 of the air conditioner, as shown in FIGS. 4 (a) and 4 (b), it is fixedly arranged on the side plate of the outdoor unit casing 2. the pipe connection plate 7 _a, KanTsugi hand 9 such as pipe fittings 8 and the three-way valve, such as a two-way valve is fixed. Generally, the respective connection ports of the pipe joints 8 and 9 for connecting the external pipe 3 made of copper or the like, which is connected to an indoor unit (not shown), are set in a certain direction, in this case, upward. There is. Further, internal pipes connected to a compressor (not shown) are connected to the other connection ports (not shown) of the pipe joints 8 and 9 in the outdoor unit casing 2, respectively. During the pipe connection work, bending of the external pipe 3 from the right side or the left side in each figure is performed depending on the position of the connection port determined by the place where the outdoor unit casing 2 is installed. After that, in these examples, the tip of the external pipe 3 is directed downward and connected to the connection ports of the pipe joints 8 and 9.

[0003]

[Problems to be solved by the device]

By the way, in the conventional pipe connection structure 1 _a as described above, since bending work is required to align the tip end of the external pipe 3 with the connection port of the pipe joints 8 and 9, pipe connection work is required. It was difficult to do so, and improvement measures were required. Also, due to the restrictions on the characteristics of the material and structure of the external pipe 3, the external pipe 3 cannot be bent with a small co-radius, and the pipe shape of the external pipe 3 after connection is not always aesthetically pleasing. It wasn't good. The present invention has been made in view of the above conventional problems, and an object of the present invention is to provide an inner / outer pipe connection structure of a casing which is excellent in workability of pipe connection work and has a good-looking pipe shape after connection. It is a thing.

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, the main means adopted by the present invention is the gist thereof, but a connector fitting for connecting the external pipe and the internal pipe is attached to the side surface of the housing. In an internal / external pipe connection structure of a housing fixed to, the connector fitting is mounted on the side surface of the housing with a variable mounting angle, and the connector and the internal pipe are connected via a flexible pipe. It is configured as an internal / external piping connection structure of the housing according to the above point.

[0005]

[Action]

 In the internal / external piping connection structure of the housing according to the present invention, the connector fitting is mounted on the side surface of the housing so that the mounting angle can be varied. For example, you can easily change the orientation of the connection port. Therefore, there is no need to bend the external piping to match the orientation of the connector, and piping connection work is extremely easy. Even if the connector mounting device is configured such that the mounting angle is variable, the positional deviation between the connector and the internal pipe is eliminated by the flexible pipe.

[0006]

【Example】

Embodiments embodying the present invention will be described below with reference to the accompanying drawings to provide an understanding of the present invention. It should be noted that the following embodiment is an example of embodying the present invention and is not of the nature to limit the technical scope of the present invention. 1 is an explanatory view for explaining a pipe connection structure of an outdoor unit casing of an air conditioner according to an embodiment of the present invention, and FIG. 2 is a main part in an outdoor unit casing adopting the above pipe connection structure. Fig. 3 is a front view showing a part of Fig. 3, and Fig. 3 shows a state in which the external pipe is connected to the pipe joint of the outdoor unit casing by the pipe connection structure. Fig. 3 (a) shows the external pipe on the right side in the figure. Is a side view showing an example in which the external pipe is connected from the left side in the figure. However, the above conventional pipe connecting structure 1 _a and Common elements shown in FIG. 4 (a) and FIG. (B), the detailed description in conjunction with the use of the same reference numerals will be omitted, functions common For the element to be used, the code without the subscript is used. In the pipe connection structure 1 of the outdoor unit casing 2 of the air conditioner according to the present embodiment, as shown in FIGS. 1 and 2, a disc-shaped pipe connection plate 7 that is detachable from the outdoor unit casing 2 is adopted. Pipe joints 8 and 9 are fixed to the pipe connection plate 7 inside the casing with these connection ports (not shown) passing through. On the other hand, a pipe for inserting a flexible pipe 6 (flexible pipe) excellent in pressure resistance and deterioration resistance, which is connected to the connection port inside the casing of the pipe joints 8 and 9 into the side plate of the outdoor unit casing 2. The insertion hole 13 is provided. The pipe insertion hole 13 is formed to have a smaller diameter than the outer diameter of the pipe connection plate 7, and a plurality of screw mounting holes 10 are formed in the outdoor unit casing 2 over the entire circumference in the vicinity of the peripheral edge of the pipe connection hole 13. It is set up. The position where the screw mounting hole 10 of the outdoor unit casing 2 is drilled and the position where the screw hole 12 is drilled in the pipe connecting plate 7 are the pipe connecting plate 7 along the side plate of the outdoor unit casing 2. Each screw hole 12 of the pipe connecting plate 7 is in a positional relationship with any one of the screw mounting holes 10 when the screw hole 12 is rotated around the coaxial axis with the insertion hole 13. As a result, the pipe connection plate 7 can be arranged at a variable mounting angle with respect to the side plate of the outdoor unit casing 2. In addition, the other end of the flexible pipe 6 is connected to the end of the internal pipe 4. Both ends of the flexible pipe 6 and the connection ports on the inner side of the casing for the internal pipes 4 and the pipe joints 8 and 9 are firmly fixed by tightening bands (not shown). An engagement projection 15 is provided on the outer peripheral portion of the pipe connecting plate 7 so as to project outward in the radial direction. The engaging projection 15 engages with the locking projection 14 projectingly provided on the side plate of the outdoor unit casing 2 in a disengageable manner, whereby the pipe connecting plate 7 can rotate at an angle of about 360 ° or more. Is prevented, and the connection state by the flexible pipe 6 is ensured.

A foldback portion 17 is formed around the entire circumference of the pipe insertion hole 13 and is folded back toward the inside of the casing. On the side of the outdoor unit casing 2 of the pipe connection plate 7, there is provided a mounting member 16 having a cross-sectional shape that follows the cross-sectional shape of the folded portion 17. When the fitting 16 is attached to the folded portion 17, the pipe connection plate 7 is rotatably supported on the peripheral edge of the pipe insertion hole 13. Therefore, FIG. 3A shows a state in which the external pipes 3 and 3 linearly and orderly extended from the right side in a side view toward the outdoor unit casing 2 are connected to the pipe joints 8 and 9. In this case, the pipe connecting plate 7 is rotated clockwise from the position shown in FIG. 1, and the opening direction of each connecting port of the pipe joints 8 and 9 and each tip opening of the external pipes 3 and 3 are opened. Is fixed by being screwed into the screw mounting hole 10 which is aligned with the screw hole 12 by the fixing screw 11 at a position where the direction of the arrow substantially coincides. In this state, the tips of the external pipes 3 and 3 are easily connected to the connection ports of the pipe joints 8 and 9. On the other hand, when attempting to connect the external pipes 3 and 3 extending from the left side in side view to the pipe joints 8 and 9, for example, the position is changed from the position of the pipe connecting plate 7 at the position shown in FIG. 3 (a). In this case, after removing the fixing screw 11, the pipe connecting plate 7 is rotated counterclockwise as shown in FIG. 3 (b). Then, the pipe connecting plate 7 is fixed by screwing with the fixing screw 11 at a position where the direction of the tip opening of the external pipes 3 and 3 and the opening direction of the connection ports of the pipe joints 8 and 9 are substantially the same. do it. As described above, according to the pipe connection structure 1 of the present embodiment, the pipe connection plate 7 to which the pipe joints 8 and 9 for connecting the external pipe 3 and the internal pipe 4 are attached to the outdoor unit casing 2. Since it is mounted on the side plate at a variable mounting angle, and the connection ports on the inside of the casing of the pipe joints 8 and 9 and the internal pipe 4 are connected via the flexible pipe 6, the direction of the tip opening of the external pipe 3 The connection ports of the pipe joints 8 and 9 can be arranged according to the above. Therefore, there is no need to bend the external pipe 3 when connecting the pipes, and the connecting work is extremely easy. In addition, it is possible to eliminate the unsightly appearance of the pipe due to the bending process.

[0008]

[Effect of the device]

 According to the present invention, the connector for connecting the external pipe and the internal pipe is fixed to the connector fixture attached to the side surface of the casing in the inner / outer pipe connection structure of the casing. An internal / external pipe connection structure for a casing is provided, wherein a tool is attached to the side surface of the casing with a variable attachment angle, and the connector and the internal pipe are connected via a flexible pipe. . As a result, the connector is fixed to the side surface of the housing via the connector fixture with a variable mounting angle, so that the connector can be arranged in a direction that matches the direction of the tip opening of the external pipe. it can. Therefore, the external pipe does not need to be bent, for example, during the external pipe connection work, and the connection work is extremely easy. In addition, it is possible to eliminate the poor appearance of the external piping due to the bending process.

[Brief description of drawings]

FIG. 1 is an explanatory view illustrating a pipe connection structure of an outdoor unit casing of an air conditioner according to an embodiment of the present invention.

FIG. 2 is a front configuration diagram partially showing a main part inside an outdoor unit casing that employs the above-mentioned pipe connection structure.

FIG. 3 shows a state in which an external pipe is connected to a pipe joint of an outdoor unit casing by the pipe connection structure, and FIG. 3A is a side view showing an example in which the external pipe is connected from the right side in the drawing. FIG. 1B is a side view showing an example in which the external pipe is connected from the left side in the drawing.

FIG. 4 shows an example in which an external pipe is connected to an outdoor unit casing adopting a conventional pipe connection structure, which is an example of the background of the present invention, and FIG. The side view which shows the example connected from the inside right side, the figure (b) is the side view which shows the example where the above-mentioned external piping was connected from the left side in the figure.

[Explanation of symbols]

1, 1 _a ... Piping connection structure 2 ... Outdoor unit casing 3 ... External piping 4 ... Internal piping 6 ... Flexible pipe (flexible pipe) 7,7 _a ... Piping connection plate 8 ... Pipe joint 9 ... Pipe joint 10 ... Screw Mounting hole 11 ... Fixing screw 12 ... Screw hole 13 ... Pipe insertion hole

Claims (1)

[Scope of utility model registration request] 1. A connection structure for connecting an external pipe and an internal pipe, wherein an inner / outer pipe connection structure of a housing is fixed to a connector fitting mounted on a side surface of the housing, wherein the connector fitting is An internal / external pipe connection structure for a casing, wherein the connector is attached to a side surface of the casing with a variable attachment angle, and the connector and the internal pipe are connected via a flexible pipe.