JPH1183080A - Connection pipe fixture for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To fix a fixture by a single screw and reduce man-hour for screw tightening by employing a structure wherein a semicircular protrusion having a notch is provided on a part of an outer box of an outdoor unit and one leg of a fixture is pinched between a base part of the outer box and the protrusion. SOLUTION: A fixture 11d is secured on an outer box part 1b of an outdoor unit by mounting legs 11, and one of the mounting legs 11 is fixed by a tightening screw 20a in such a manner as to be surrounded by a semicircular protrusion 22 of the outdoor unit. The protrusion 22 has a narrower dimension at a deeper side (L2) in which the legs 11 are to be inserted and a wider dimension at an inlet opening side (L1), and thickness S of the legs 11 is set to satisfy the relation L2<S<L1 so that clearance is not left at the semicircular protrusion 22 when the mounting leg 11 is tightened by the screw 20a, and loosening of the screw 20a can be avoided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an air conditioner,
In particular, the present invention relates to an installation of a connection pipe fitting provided in an outdoor unit in an air conditioner which is separated into an outdoor unit and an indoor unit, and these units are connected using a connection pipe.

[0002]

2. Description of the Related Art A split type air conditioner in which a main body is separated into an outdoor unit and an indoor unit is connected by a connecting pipe to form a refrigeration cycle, and can perform a cooling operation and a heating operation. As one example of such an air conditioner, there is JP-A-64-6653, but there is no description about a fitting for connecting a connection pipe between an outdoor unit and an indoor unit according to the present invention.

[0003]

A fitting for connecting a pipe for connecting the outdoor unit and the indoor unit is fixed to a part of the outer box of the outdoor unit by two screws per fitting. I was In order to make the air conditioner more inexpensive, one of the two is eliminated to eliminate the cost of parts for screws and to omit the processing for mounting. In addition, in the conventional mounting of the mounting fixture, a pressing force is generated from the connecting pipe, so that it takes time to install the first screw hole in alignment and it is difficult to perform the operation, and a long working time is required. But there was no improvement.

An object of the present invention is to provide an inexpensive and easy-to-install structure of a fitting for connecting connecting pipes in order to provide an inexpensive air conditioner.

[0005]

In order to provide a cheaper and more operable connecting pipe fitting mounting structure, one of the two feet of the fitting is no longer required to be screwed on one of the feet of the outdoor unit. Provide a semi-circular projection with a cut in a part of the box,
The structure is such that one foot of the fixture is sandwiched between the base portion of the outer box and the projection, so that screws for attaching the fixture are eliminated.

[0006] As described above, by fixing one of the legs of the attachment by processing a part of the plate of the outer box of the outdoor unit, two legs are conventionally screwed. The new air conditioner is intended to be the original purpose because it can be fixed with two screws and the work of aligning the first screw hole is not required when installing the mounting fixture. Can be.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in comparison with a conventional product.

FIGS. 4 and 5 are views for explaining an air conditioner described in Japanese Patent Application Laid-Open No. 64-6653. Inside the outdoor unit 1, a compressor 4, a four-way valve for switching between cooling and heating operations, an outdoor heat exchanger 6, a pressure reducer 7, and an electric component 9 are housed. An indoor heat exchanger 8 is housed in the indoor unit 2. The outdoor unit 1 and the indoor unit 2 are connected by connecting pipes 3d and 3s to form a refrigeration cycle. Here, the outdoor unit 1 has connection pipe fittings 10d and 10s, which are generally connected using a flare nut, and FIG. 5 is an external view of the outdoor unit.

The connecting pipe fitting 10d has the appearance as shown in FIG. 6, where 11 is a mounting foot, 12 is a connecting pipe on the side of the electric valve 7, and 13 is a connecting pipe 3d extending from the indoor unit 2. Flare nut, 14 is pipe 1
It is a nut that covers a screw that opens and closes a few 3d passages. Holes 11a and 11b are provided at both ends of the mounting foot 11, and are fastened to the outdoor unit 1 with screws.

Similarly, the connection pipe fitting 11s has an appearance as shown in FIG. 7, 15 is a mounting foot, 16 is a connection pipe on the four-way valve 5 side, and 17 is a connection pipe 3s extending from the indoor unit 2. A flare nut for mounting, 18 is a nut covering a connection port for bleeding air in the refrigeration cycle, 19 is a pipe 16 and a pipe 3s and a nut 1
A nut that covers screws that open and close eight-way passages.

The mounting feet 15 have holes 15a and 16b at both ends, and are fastened to the outdoor unit 1 with screws. FIG. 8 shows a fixture 10 attached to the outdoor unit 1.
An example of a conventional installation of d and 10 s is shown. 20a, 20b, 2
1a and 21b are mounting units 10d and 10s for the outdoor unit 1.
The screw is fixed to the outer box part 1b.

FIG. 1 shows a mounting side of the mounting tools 10d and 10s of the present invention. Numerals 22 and 23 have a structure in which semicircular and notched projections are provided from the outer box portion 1b of the outdoor unit 1 so as to enclose one of the mounting feet 11 and 15.

FIG. 2 shows a section AA of FIG. Fixture 11
d is the outer box part 1 of the outdoor unit 1
b, and is fixed to the semicircular projection 22 of the outdoor unit 1 by a mounting nut 20a.

FIG. 3 relates to the improvement of the protruding portion 22 of the present invention, in which the depth (L2) into which the mounting foot 15 enters is narrowed,
By making the inlet side (L1) wider and making the thickness S of the mounting foot 11 satisfy L2 <S <L1, when the mounting foot 11 is tightened with the screw 20a, a semicircular shape is obtained. The play at the projection 22 is eliminated, and the loosening of the screw 20a can be eliminated.

[0015]

According to the above-mentioned structure, each of the fixtures 11d and 11s can be fixed with one screw, so that the screws 20 and 21 can be omitted and the man-hour for screw tightening can be reduced. And the cost of the air conditioner can be reduced.

[Brief description of the drawings]

FIG. 1 is an external view showing an attached state of the present invention.

FIG. 2 is an AA cross section of FIG. 1 of the present invention.

FIG. 3 is an enlarged view of a semicircular protrusion according to the present invention.

FIG. 4 is a refrigeration cycle diagram showing a configuration of the air conditioner.

FIG. 5 is an external view of an outdoor unit.

FIG. 6 is a view showing an example of an external appearance of a fixture.

FIG. 7 is a view showing an example of the appearance of a mounting tool.

FIG. 8 is an external view showing a conventional mounting state.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Outdoor unit, 1b ... Outer box part, 2 ... Indoor unit, 3d, 3s ... Connection pipe, 10d, 10s ... Fixture, 11, 15 ... Mounting foot, 20a, 21a ... Tightening nut, 22, 23 ... Half A circular projection.

Claims (1)

[Claims] 1. An outdoor unit (1) and an indoor unit (2)
And these units are connected by connecting pipes (3d,
3s), the mounting feet (11, 1) provided on the fittings (10d, 10s) for connecting pipes (3d, 3s) provided in the outdoor unit (1).
5) On the other hand, semi-circular protrusions (22, 23) with cuts are made from the outer box portion (1b) of the outdoor unit (1), and a part of the mounting feet (11, 15) is inserted there. At the same time, the other foot is attached to the fixture (11
(d, 11 s). A connection pipe fitting for an air conditioner, wherein: