JPS63255578A - Supporting device for rotary compressor - Google Patents

Abstract

PURPOSE:To prevent the breakage of pipes by installing a fixing metal fitting through an elastic member onto the outer periphery of the opened port part of a sealed which is opened at the nearly same position to the axis center of a compression element and inscribed and fixed with the pipes. CONSTITUTION:An opened port part 3a projectingly opened around the axis center 7 is formed on the cover parts 3 and 4 of a sealed case 2, and pipes 5 and 6 are inserted. The small diameter parts of the elastic members 13 and 14 are inserted and fixed at the projection parts of the supporting metal fittings 15 and 16. Therefore, the torsional vibration of the sealed case 2 is made least on the axis center 7, and the vibration of the pipes 5 and 6 can be reduced, and also the supporting transmission by the supporting metal fittings 15 and 16 can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a support device for a rotary compressor used in a refrigeration system or the like.

Conventional technology In recent years, compressors used in refrigeration equipment, etc.
In terms of space saving, there has been a shift from reciprocating type to rotating type. These rotary compressors usually have an electric compression element directly fixed and housed in a sealed case, so the dynamic pressure vertical element suffers from stains due to negative 2b and load fluctuations during the compression work of the electric compression element. Screw vibrations generated around the shaft center directly vibrate the sealed case, which in turn vibrates the compressor support device and piping to the cooling system, generating large noise.

Therefore, when supporting and fixing the compressor, the piping to the cooling system is protruded from the closed case at a position that is approximately the same as the axis of the electric compression element, and by supporting this piping, the piping is connected from the compressor to the support device. A device to prevent the generation of noise by reducing vibration transmission to pipes and piping
16843) was done.

An example of the above-mentioned conventional support device for a rotary compressor will be described below with reference to the drawings.

FIGS. 8 to 10 show an example of a conventional rotary compressor support device.

In the figure, 1 is a rotary compressor, 2 is an airtight case that directly securely houses an electric compression element (not shown), and 3 and 4 are lids of the airtight case 2. Reference numeral 5 indicates a suction pipe, and reference numeral 6 indicates a discharge pipe, which is connected to the cooling system, and is located at a position 3a on the axis 7 of the electric compression element of the cover parts 3 and 4.

3-1 It protrudes from the lid parts 3 and 4 at 4a. Reference numerals 8 and 9 denote two-stage cylindrical elastic members, which include large diameter portions 8a and 9a, small diameter portions sb,
From 9b to 8c, with a small hole 8c in the center.

It is equipped with 9C. 10.11 is a support metal fitting with cylindrical protrusions 10a and 11a provided above;
The lower part is bent into an L shape and has a mounting portion 10b.

11b. Suction pipe 5. The discharge pipe 6 is inserted into the small holes 8c and 9c of the elastic members 8 and 9, and the small diameter portions 9a and 9b of the elastic members 8 and 9 are inserted into the protruding portion 10 of the support fitting 10°11.
a, inserted and fixed in 10b. Further, the support fittings 10.11 are fixed to the support base 12 with screws or the like.

The operation of the rotary compressor support device configured as above will be described below.

When the electric compression element inside the sealed case 2 compresses the refrigerant, a screw vibration is generated around the axis 7 of the stain dynamic pressure line element due to load fluctuation due to compression, and the sealed case 2 generates screw vibration around the axis 7 of the dynamic pressure line element. The screws vibrate due to vibration. However, the vibration on the axis 7 is the smallest, and the vibration of the lid part 3.4 is the smallest at the axis positions 3a and 4a. Therefore, suction pipe 5. Since the pipes such as the discharge pipe 6 protrude from the axial center positions 3a and 4a, their vibrations are lower than when they protrude from other positions, and the vibration of the pipes can be reduced.

Furthermore, support fittings 10. f 1 is on the axis 7 with the least vibration, and the suction pipe 5. Since the discharge pipe 6 is fixed, the vibration of the support fittings 10 and 11 is also low, and the vibration due to support transmission is also low.

In this way, suction tube 5. Vibration of pipes such as the discharge pipe 6 and vibrations of supporting metal fittings can be reduced, and generation of noise due to pipes and support transmission can be prevented.

Problems to be Solved by the Invention However, in the above configuration, since support is provided by piping such as the suction pipe 5 and the discharge pipe 6, the piping may be damaged due to vibration during transportation or vibration during operation. There are some problems with this.

In view of the above-mentioned problems, the present invention provides a structure in which piping is not damaged due to vibration during operation.

5 to 7 Means for Solving the Problems In order to solve the above problems, the rotary compressor support device of the present invention has a cylindrical projecting opening at approximately the same position as the axis of the electric compression element, The system includes an opening in the sealed case that internally fixes piping to the cooling system that protrudes outward from the sealed case, and a fixing fitting that is attached to the outer periphery of this opening via an elastic member.

Effect of the Invention With the above-described configuration, the present invention allows the piping to the cooling system to protrude from the sealed case at approximately the same position as the axis of the electric compression element, without supporting the piping to the cooling system with a fixed metal fitting, and further rotates the piping. Because it can support the mold compressor,
It is possible to prevent the occurrence of noise due to pipe vibration and support transmission of vibration without damaging the pipe.

EXAMPLE Hereinafter, an example of the support device for a rotary compressor of the present invention will be described with reference to the drawings. In order to avoid duplication of explanation, the same parts as in the conventional example will be given the same reference numerals and the explanation will be omitted.

1 to 7 show an embodiment of a support device for a rotary compressor according to the present invention.

The lids 3 and 4 of the sealed case 2 are provided with cylindrical openings 3b and 4b that protrude about the axis 7, and these openings are connected to the lid 3. It is integrally molded with the lid part 4. The suction pipe 6 and discharge pipe 6, which are piping to the cooling system, are connected to the openings 3b and 4.
It is inserted in b.

13.14 is a two-stage cylindrical elastic member, with a large diameter portion 13a;
, 14a and small diameter portions 13b, 14b, and holes 13c, 14G are provided in the center. Reference numerals 15 and 16 designate support fittings, which are provided with cylindrical protrusions 15a and 16a at the top, and bent into an L-shape at the bottom and have attachment parts 15b and 1eb.
is formed.

Suction pipe 5. The discharge tube 6 is inserted into the openings 3b, 4b, which are inserted into the elastic members 13.14. The elastic member 13.14 is still inserted into the holes 13c and 14c, and the small diameter portions 13b and 14b of the elastic member 13.14 are inserted and fixed into the protrusions 15a and 1eb of the support fitting 15.16. Further, the support fittings 10.11 are fixed to the support base 12 with screws.

The operation of the support device for a rotary compressor constructed as described above will be explained below.

When the electric compression element inside the sealed case 2 compresses the refrigerant, a screw vibration is generated around the axis 7 of the stain dynamic pressure line element due to load fluctuation due to compression, and the sealed case 2 generates screw vibration around the axis 7 of the dynamic pressure line element. The screws vibrate due to vibration. Therefore, the vibration on the axis 7 is the smallest and the vibration of the lid 3°4 is caused by the opening 3b on the axis 7.
, 4b is the smallest. Therefore, suction pipe 5. Since the pipes such as the discharge pipe 6 are inserted into the openings 3b and 4b and protrude from the sealed case 2, their vibrations are lower than when they protrude from other positions, and the vibration of the pipes can be reduced. .

In addition, since the support fittings 15 and 16 fix the openings 3b and 4b on the axis 7 where the vibration is the smallest, the vibration of the support fittings 15 and 16 is also low, and the vibration due to support transmission is also small. Become something.

Furthermore, the rotary compressor 1 has lids 3 and 4 of a sealed case 2.
The elastic member 13 is formed integrally with the openings sb and +b.
．． Since it is supported and fixed to the support fittings 15 and 16 via the suction pipe 6. Without damaging the piping such as the discharge pipe 6, the opening sb,
4b is also the lid part 3 of the sealed case 2 used as a pressure vessel.
, 4 is integrally molded with strong strength.
It is not damaged by vibrations during transportation or operation, and it is possible to stably reduce the noise of the freezing and refrigeration equipment.

Effects of the Invention As described above, the present invention provides a support device for a rotary compressor in which an electric compression element is directly fixed and housed in a sealed case, in which a cylindrical protruding opening is provided at approximately the same position as the axis of the electric compression element. By providing an opening of the sealed case for internally fixing the piping to the cooling system protruding outward from the sealed case, and a fixing fitting attached to the outer periphery of this opening via an elastic member, Stable noise reduction of the refrigeration and air conditioning equipment can be achieved without damaging the piping or supporting parts.

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[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an elastic member of a support device for a rotary compressor according to an embodiment of the present invention, FIG. 2 is a perspective view showing a support fitting of the support device, and FIGS. 3 and 4 are 5 and 6 are side views of the support device, FIG. 7 is a front view of the support device, and FIGS. 8 and 9 are conventional rotary compressors. FIG. 10 is a side view of the support device, and FIG. 10 is a front view of the support device. 2... Sealed case, 3, 4... Lid part,
3 b, 4b...Opening, 5...Suction pipe, 6...Discharge pipe, 7...Axis, 13
．． 14...Elastic member, 15.16...Supporting metal fittings. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 13 - Elastic member 2 Figure 15 - Support fitting 1 How do you feel about your mouth?::::: Heh! 4″-0; evil sister glue garden control ding sleep pivot 2- heavy duty case 3.4--one lid 5- suction pipe 6- discharge pipe 7-axis core 13.14-11 rin-like material 15, I6---Support equipment 7th figure 1N Kaisho 63-255578 (5) 9th figure 10th figure ``3.58 Mushizo!-Nko 44k.

Claims (1)

[Claims] An opening in the sealed case that protrudes in a cylindrical shape at approximately the same position as the axis of the electric compression element that is directly fixed and housed in the sealed case, and internally fixes piping to the cooling system that projects outside of the sealed case. A support device for a rotary compressor, comprising a fixing member attached to the outer periphery of the opening via an elastic member.