JPH01315683A - Support device for rotary compressor - Google Patents

Abstract

PURPOSE:To aim at stably supporting a rotary compressor in a vibration suppressing condition by inserting a coolant pipe for the rotary compressor in the inner edge part of a vibration suppressing support member, by inserting the outer edge part of the vibration supporting member into the holding part of a support fixture, and by connecting the inner and outer edge parts of the vibration suppressing support member through the intermediary of ribs. CONSTITUTION:A vibration suppressing support member 10 made of resilient materials has cylindrical inner and outer edge parts 10a, 10b which are connected to each other through the intermediary of ribs 10c which are reversed alternately so that their rib corner points 10d confront each other. Meanwhile a support fixture 11 integrally incorporated with a cylindrical holding part 11a is fastened to a support plate 12 by means of screws 13. A coolant pie 4 for a rotary compressor 1, which is arranged along the center axis 5 and which also serves as a support leg, is inserted in the inner edge part 10a of the vibration suppressing support member 10. Further, the outer edge part 10b of the vibration suppressing support member 10 is inserted in the holding part 11a of the support fixture 11. With this arrangement, the rotary compressor 1 is stably supported in a vibration suppressing condition, thereby it is possible to reduce noise which is otherwise generated by transmission of vibration from the rotary compressor 1 to a refrigerator body.

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.
From a space-saving perspective, there has been a shift from reciprocating types to rotating types. These rotary compressors have an electric compression element directly fixed and housed in a normally sealed case, so load fluctuations occur around the axis of the electric compression element due to load fluctuations during compression work of the electric compression element. Rotational vibrations and the like directly vibrate the closed case, and the vibrations also pass through the support device of the compressor, vibrating the main body of the refrigeration equipment, etc., and sometimes generating large noise.

Therefore, when supporting and fixing the compressor, the compressor is placed near the same axis as the electric compression element that is directly fixed and stored in the sealed case.
By providing a substantially cylindrical support leg protruding from the end of the sealed case in the axial direction, and fixing this support leg to the support fitting via a substantially cylindrical vibration-proof support member made of an elastic material, A proposal has been made (Japanese Utility Model Publication No. 148290/1983) to reduce the vibrations transmitted from the compressor to the main body of the refrigeration system or the like through the support device, thereby preventing the generation of noise.

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

6 and 7 show an example of a conventional support device for a rotary compressor.

In the figure, 1 is a rotary compressor, 2 is an airtight case that directly fixes and houses an electric compression element (not shown), and 3 is an end plate of the airtight case 2. Reference numeral 4 denotes a cylindrical refrigerant pipe that is provided at a position 3a above the axis 6 of the electric compression element of the end plate 3 of the closed case 2 and protrudes from the end plate 3, and whose axis 4a is on the axis 6. It also serves as Reference numeral 6 denotes a vibration-proof support member made of a cylindrical elastic material, into which the refrigerant pipe 4 is inserted and fixed into the inner peripheral part 6a, and into which the outer peripheral part 6b is inserted and fixed into a cylindrical holding part 7a integrally molded with the support fitting 7. ing. 6C is the lower part of the vibration-proof support member. 8 is a support plate, and the support metal fitting 7 is connected to the screw 9.
It is tightened and fixed.

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

When the electric compression element in the closed case 2 compresses the refrigerant, a rotational vibration is generated around the axis 5 of the dynamic pressure shelf element due to the load fluctuation due to compression, and the closed case 2 is centered around the axis 5. Vibrates due to rotational vibration.

Therefore, the vibration on the axis 6 is the smallest and the vibration of the lid part 3 is the smallest at the axis position 3a.

Therefore, by attaching the refrigerant pipe 4 to the axial center position 3a of the lid and aligning the axial center 4a of the refrigerant pipe 4 with the axial center 5, the vibration of the refrigerant pipe 4 can be removed from other parts. It can be made smaller than when the refrigerant pipe 4 is attached, and the generation of noise caused by the vibration of the refrigerant pipe 4 can be suppressed. Also, in this way, the refrigerant pipe 4 is installed at the axial center position 3a of the lid part 3 so that its axial center 4a coincides with the axial center 5.
By attaching it, the vibration of the refrigerant pipe 4 can be reduced, and by reducing the vibration transmitted to the main body of the refrigeration equipment etc. via the vibration isolation support member 6 and the support fitting 7, the vibration of the main body of the refrigeration equipment etc. can be reduced. Noise generation due to vibration can also be suppressed.

Problems to be Solved by the Invention However, in the above configuration, the vibration isolating support member 6
Since it has a cylindrical shape, the members are dense in the direction of rotation, which makes it difficult to lower the spring constant in the direction of rotation, and the load of the compressor is concentrated at 6cK in the lower part. Therefore, the lower part 6 of the vibration isolating support member 6
Since the amount of deflection of C is large, the hardness of the lower part 6C is high, and therefore the spring constant in the rotational direction is even higher.

Therefore, when the vibration of the compressor is high, it is difficult to sufficiently absorb the vibration of the refrigerant pipe 4 with the vibration-proof support member 6, which causes the problem of vibration of the refrigeration apparatus body and generation of noise.

In view of the above-mentioned problems, the present invention provides a configuration that provides stable vibration-proof support.

Means for Solving the Problems In order to solve the above problems, the support device for a rotary compressor of the present invention includes an electric compression element that is provided at the end of a cylindrical sealed case and fixedly housed directly within the sealed case. A substantially cylindrical or substantially cylindrical supporting leg whose central axis is located approximately concavely adjacent to the axis of a vibration isolating support member made of an elastic material having a cylindrical inner edge and an outer edge connected to ribs, into which the support leg is inserted and fixed; A supporting metal fitting having a holding part that is attached and fixed to the periphery thereof is provided.

According to the above-described configuration, the present invention is provided with a support leg at approximately the same position as the axis of the electric compression element, and this support leg is inserted and fixed into the inner edge of the vibration-proof support member, and furthermore, this inner edge is connected to the outer edge of the vibration-proof support member. By connecting the rotary compressor with a rib, the rotary compressor is supported and fixed at the position with the least vibration, and the spring constant in the rotational direction is low, making the natural frequency in the rotational direction extremely low. This provides a large vibration damping effect against vibrations in the rotational direction. In addition, by making the rib shape that connects the outer edge and the inner edge into a substantially serpentine shape, the natural frequency in the load direction of the rotary compressor can be lowered, reducing the vibrations caused by the vibration of the rotary compressor. This suppresses the vibration of the refrigerant piping and the vibration of the refrigeration equipment body to a minimum, thereby suppressing the generation of noise. Furthermore, by alternating the rib shapes in opposite directions, even if the rotary compressor is significantly deflected in the direction of the load, the ribs will come into contact with each other, without significantly increasing the natural frequency in the direction of the load. It can hold the load of a rotary compressor without significantly deteriorating its effectiveness.

EXAMPLE Hereinafter, an example of the support device for a rotary compressor of the present invention will be described with reference to the drawings. Incidentally, 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 5 show an embodiment of a support device for a rotary compressor according to the present invention.

In the figure, 1o is a vibration-proof support member made of elastic material.
It has a cylindrical inner edge part 10a and an outer edge part 1Qb, and the inner edge part 10a and the outer edge part 10b are approximately doglegged with rib corner points 10d, and the rib corner points 10d are arranged alternately so as to face each other. The ribs 10c are connected to each other by a plurality of ribs 10c arranged in opposite directions. Reference numeral 11 denotes a support fitting, in which a cylindrical holding portion 11a is integrally molded, and is fastened and fixed to the support plate 12 with screws 13. In the rotary compressor 1, refrigerant pipes 4 serving as support legs provided on the axis 5 at two places on the left and right are inserted and fixed into the inner edge 10a of the vibration-proof support member 10, and the vibration-proof support member 10 It is supported and fixed by inserting and fixing the outer edge part 10b into the holding part 11a of the support fitting 11.

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

In the rotary compressor 1, when the electric compression element in the closed case 2 compresses refrigerant, a rotational vibration is generated around the axis 6 of the electric compression element due to load fluctuation due to compression, and the closed case 2 is rotated around the axis 6 of the electric compression element. It mainly vibrates with rotational vibration centered around 5. Therefore, the vibration on the axis 5 is the smallest, and the vibration of the lid part 3 is the smallest at the axis position 3a. Therefore, the refrigerant pipe 4, which also serves as a support leg, is placed at the axial center position 3a of the lid portion 3.
By mounting the refrigerant pipe 4 on the refrigerant pipe and aligning the axis 4a of the refrigerant pipe 4 with the shaft center 5, the vibration of the refrigerant pipe 4 can be made smaller than when the refrigerant pipe 4 is mounted on other parts. It is possible to suppress the generation of noise caused by the vibration of 4.

Furthermore, the vibration-proof support member 10 has an inner edge 10a that is similar to an outer edge 1.
0b and a rib 10C, and since the rib 10c is easily deformed in the rotational direction, the spring constant in the rotational direction between the inner edge 10a and the outer edge 10b is the inner edge j.
This is very low compared to the case where Oa and the outer edge part 10b are integrated, and by inserting and fixing the refrigerant pipe 4 into the inner edge part 10a, the natural frequency in the rotation direction can be made extremely low. Provides anti-vibration effect,
The vibration of the rotary compressor 1 is caused by the vibration-proof support member 10. Support metal fittings 1
It is also possible to prevent the generation of noise that is transmitted to the support plate 12 via the support plate 1 and caused by vibration of the support plate 12. Moreover, the load of the rotary compressor 1 is supported by the rib 10c.
In addition, since the rib 10c is approximately dogleg-shaped and has a rib corner point 1Qd, the rib 10C is easily deformed in the load direction, so that the inner edge 10a and the outer edge 10b are integrated. The natural frequency in the load direction can be made extremely low compared to the case where
By contacting each other, the ribs 10c are not completely crushed, and the load can be held without increasing the size of the natural diaphragm in the load direction, and the vibration of the rotary pressure machine 1 is It is also possible to prevent an increase in noise due to vibration of the support plate 12.

Effects of the Invention As described above, the present invention provides a substantially cylindrical airtight case in which the center lIrl1l is located approximately in the same vicinity as the axis of the electric compression element that is provided at the end of a cylindrical sealed case and is directly fixedly housed within the sealed case. A cylindrical inner edge and an outer edge connected by a plurality of ribs extending in a radial direction in a substantially meandering manner and whose meandering directions are alternately reversed on a support leg having a shape or a substantially cylindrical shape. a vibration-proofing support member made of an elastic material for inserting and fixing the support leg into the inner edge; and a support fitting having a holding part for attaching and fixing the outer edge of the vibration-proofing support member to the inner periphery. The support device of the mold compressor has both a supporting effect at a position with low vibration and an anti-vibration effect due to the anti-vibration support member having ribs.A vibration-isolating support that transmits an extremely small amount of vibration in the direction of rotation. The anti-vibration support member has ribs that have a substantially serpentine shape and whose meandering directions are alternately reversed, thereby sufficiently increasing the anti-vibration effect in the load direction even when the ribs deform when the load increases. Second, the generation of noise caused by the transmission of vibrations of the rotary compressor to the refrigeration system main body can be suppressed, and stable noise reduction of the refrigeration system can be achieved.

[Brief explanation of the drawing]

Fig. 1 is a front view of a support device for a rotary compressor showing an embodiment of the present invention, Fig. 2 is a perspective view showing a vibration-proof support member of the support device, and Fig. 3 is a support metal fitting of the support device. A perspective view showing
Fig. 4 is a side view of a rotary compressor with the refrigerant piping of the support device installed, Fig. 5 is a side view of the support device, and Fig. 6 is a front view of a conventional support device for a rotary compressor. , FIG. 7 is a side view of the support device. 2... Sealed case, 4... Refrigerant piping,
5...Axis center, 1o...Vibration isolation support member,
DESCRIPTION OF SYMBOLS 10a...Inner edge part, 10b...Outer edge part, 10c...Rib, 11... Support metal fitting, 11a... Holding part. Name of agent: Patent attorney Toshio Nakao and one other person? −
-General closed case/θb-kuto R capital 1st rIA//a-gag Z-, -8M case 4--1st medium piping 6-M Noshi! @Figure 4 Figure 5 /ノλ-Naked worship implements Figure 6, r 371

Claims (1)

[Claims] A substantially cylindrical or substantially cylindrical support leg that is provided at the end of a cylindrical sealed case and whose center axis is located approximately in the same vicinity as the axis of the electric compression element that is directly fixedly stored in the sealed case, and a support leg that has a radius It has a cylindrical inner edge and an outer edge connected by a plurality of ribs extending in a substantially meandering direction and whose meandering directions are alternately opposite, and the support leg is inserted into the inner edge. A support device for a rotary compressor, comprising a vibration-proof support member made of an elastic member to be fixed, and a support fitting having a holding part that fixes an outer edge of the vibration-proof support member.