JPH02123286A - Supporting device for rotary compressor - Google Patents

Abstract

PURPOSE:To prevent an elastic suspension member from being damaged during pipe welding, and to facilitate the replacement of the elastic suspension member and a supporting fittings to produce steady vibration isolating effect by making one side of the ends of an opening of the elastic suspension member cover a supporting leg to lie upon the other side of the ends, and forming the supporting fittings with a notched part. CONSTITUTION:A supporting leg formed of a refrigerant pipe 4 is provided at the about same position as the shaft center 5 of an electrically driven compressing element, and an elastic suspension member 10 formed of an elastic member is provided with an opening 10c, and a holding part 11a of a supporting fittings 11 with a notched part 11b, and the supporting leg is supported through the elastic suspension member 10 by the supporting fittings 11. Thus a rotary compressor 1 is supportingly fixed at a position having the smallest rotary vibration to produce large vibration isolating effect against the rotary vibration. In addition to that, in mounting the elastic suspension member 10 and the supporting fittings 11, since fittedly mounted on the supporting leg, they can be simply mounted after pipe welding. Thus the elastic suspension member 10 or the like can be prevented from suffering damage due to heat generated by welding work to obtain steady vibration isolating effect.

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 usually have an electric compression element directly fixed and housed in a sealed case, so when the electric compression element is compressed, load fluctuations etc. may cause the axis of the dynamic pressure line element to The rotational vibrations generated as a result of this directly vibrate the closed case, and the vibrations also pass through the compressor's main unit, causing the main body of the refrigeration system to vibrate, resulting in large noise.

Therefore, when supporting and fixing the compressor, the electric compression element, which is directly fixed and stored inside the sealed case, is placed in the same vicinity as the precision of the electric compression element.
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 to prevent the generation of noise by reducing the vibration transmitted from the compressor to the main body of the refrigeration system or the like through the support device (Sho 5J3-148290).

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 inside the sealed case 2 compresses refrigerant, rotational vibrations are generated around the axis 5 of the electric compression element due to load fluctuations due to compression, and the sealed case 2 generates rotational vibrations around the axis 5. Vibrate.

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

Therefore, by attaching the refrigerant pipe 4 to the axial center position 3a of the head plate part and further aligning the axial center 4a of the refrigerant pipe 4 with the axial center 6, the vibration of the refrigerant pipe 4 is reduced compared to when it is attached to other parts. It can be made small, and the generation of noise caused by vibration of the refrigerant pipe 4 can be suppressed. In addition, by attaching the refrigerant pipe 4 to the axial center position 3a of the end plate 3 so that the axial center 4a coincides with the axial center 6, the vibration of the refrigerant pipe 4 can be reduced, and vibration isolation can be achieved. By reducing the vibrations transmitted to the main body of the refrigeration apparatus or the like through the support member 6 and the support fitting 7, it is possible to suppress the generation of noise caused by the vibration of the main body of the refrigeration apparatus or the like.

Problem to be Solved by the Invention However, in the above configuration, since the refrigerant pipe 4 also serves as a support leg, when the refrigerant pipe 4 is welded and fixed to the system pipe of the refrigeration equipment, the vibration isolating support member 6 and the support metal fittings are 7
Because the holding part 7a has a substantially double cylindrical shape, it is necessary to perform welding with the vibration-proof support member 6 and the support fittings 7 attached to the refrigerant pipe 4 or the system pipe. The vibration damping support member 6 made of an elastic member may be damaged due to the heat generated during use, and a sufficient vibration damping effect may not be obtained. Furthermore, when replacing the vibration isolating support member 6 or the supporting metal fittings, it is necessary to separate the system piping by cutting the refrigerant piping 4 or the like, so there is a problem in that it takes a lot of time and effort even at the time of replacement.

In view of the above-mentioned problems, the present invention provides a structure in which the vibration isolating support member is not damaged during pipe welding and the vibration isolating support member and the supporting metal fittings can be easily replaced.

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. The support leg has a center axis located approximately in the same vicinity as the axis of the support leg, a vibration-proof support member that holds the support leg and is made of an elastic member, and a holding part that attaches the vibration-proof support member to the inner periphery. The anti-vibration support member has an opening in part and a groove into which the support leg is inserted by inserting it through the opening, and one end of the opening is attached to the support leg. The support fitting has an end shape that covers the support leg and overlaps the other end, and the support fitting has a cutout portion into which the support leg can be inserted.

Effect: With the above-described configuration, the present invention is provided with a support leg at a position between the shaft center and the path of the electric compression element, and by supporting this support leg via a vibration-proof support member, the rotational vibration is placed at a position where rotational vibration is least. By supporting and fixing the rotary compressor with the rotary compressor, a large vibration-proofing effect against rotational vibration can be obtained. In addition, by providing an opening in the anti-vibration support member and a notch in the retaining part of the support fitting, when installing the anti-vibration support member and support fitting, the anti-vibration support member and support fitting can be installed without inserting the support leg. Since the vibration support member and the support fitting can be easily installed after pipe welding by fitting them, a stable vibration isolation effect can be obtained without damage to the vibration isolation support member etc. due to heat during welding. moreover,
By fixing the openings of the anti-vibration support members so as to overlap each other and enclose the support legs, a stable anti-vibration effect can be obtained without deterioration of the anti-vibration effect due to the support legs falling into the openings, etc. be.

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 are given the same reference numerals and the explanation will be omitted.

1 to 6 show an embodiment of a support device for a rotary compressor according to the present invention.

In the figure, reference numeral 10 denotes a vibration-proof support member, which is made of an elastic member, has a groove portion 10a, an outer peripheral portion 10b, and an opening 1 at the top.
0c, and has a substantially U-shape due to the opening 10c. Also, the ends 10d at both ends of the opening 10c
, 10e, the groove portion 10
a, the outer peripheral portion 10b has a substantially cylindrical shape. Reference numeral 11 denotes a support fitting, and the holding part 11 has a cutout part 11b at a substantially lateral position.
a is integrally molded 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 shaft center 6 at two places on the left and right are installed in grooves 10a of the anti-vibration support member 1o, and the outer periphery of the anti-vibration support member 10 10b is supported and fixed by being attached to the holding part 11a of the support fitting 11 with the ends 1od and 1oe overlapped.

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

In the rotary compressor 1, when an electric compression element (not shown) in a closed case 2 compresses refrigerant, rotational vibrations occur around the axis 6 of the electric compression element due to load fluctuations due to compression.
The sealed case 2 vibrates mainly due to rotational vibration around the axis 5. Therefore, the vibration on the axis 5 is the smallest, and the vibration of the end plate 3 is the smallest at the axis position 3a.

Therefore, by aligning the axis 4a of the refrigerant pipe 4, which also serves as a support leg, with the axis 6, the vibration of the refrigerant pipe 4 can be made smaller than when it is attached to other parts, and the refrigerant pipe 4 It is possible to suppress the generation of noise caused by the vibrations to a small level.

Further, the rotary compressor 1 is supported and fixed to a support plate 12 via a vibration-proof support member 10 and a support fitting 11, and the rotary compressor 1 is supported at an axial center position 3a where vibration is small. As a result, the vibration of the rotary compressor 1 is transmitted to the support plate 12 due to the vibration damping effect of the vibration isolation support member 10 and the effect of supporting it at a position where vibration is originally small, and the vibration of the rotary compressor 1 is transmitted to the support plate 12 and further to the refrigeration equipment. It is also possible to prevent the generation of noise caused by vibrating the main body.

To attach the vibration-proof support member 1o and the support fittings 11 to the refrigerant pipe 4, insert the refrigerant pipe 4 into the groove 10a through the opening 10c of the vibration-proof support member 1o, and then attach the vibration-proof support member 1o to an elastic member. Since the ends 1od and 1oe of the opening 1oc are overlapped with each other to enclose the refrigerant pipe 4, the refrigerant pipe 4 is inserted into the refrigerant pipe 4 through the notch 11b in advance. This is done by inserting it into the inner periphery of the holding part 11a of the support fitting 11. For this reason, after the refrigerant piping 4 is welded and fixed to the system piping (not shown) of the refrigeration equipment, the vibration-proof support member 1o and the support metal fittings 11 can be attached. The vibration isolating support member 1o is not damaged by the heat etc. during welding, and deterioration of the vibration isolating effect due to damage to the vibration isolating support member 1Q can be prevented, and an extremely stable vibration isolating effect can be obtained. Furthermore, when replacing the vibration-proof support member 1o and the support fittings 11, there is no need to separate the refrigerant pipe 4 from the system pipe by cutting or the like, and the replacement can be performed extremely easily.

Moreover, the opening 10c and the end 10 of the vibration-proof support member 10
Since the overlapping position of d and 10e is at the upper part of the vibration isolation support member 10, the load of the rotary compressor 1 is applied to the overlapping part for a long period of time, and the overlapping part becomes deformed. 10c will not open and the refrigerant pipe 4 will not fall off, and a stable vibration damping effect can be obtained. Furthermore, by setting the cutout portion 11b of the support fitting 11 at a substantially horizontal position, the overlapping portion of the vibration-proof support member 1o does not open wider than the cutout portion 10b, and the rotary compressor is Even if a large vibration is applied to the refrigerant pipe 4, it is possible to prevent the refrigerant pipe 4 from falling off from the vibration-proof support member 1°. In addition, since the ends 1od and 1oe of the opening 10C are overlapped, the support fitting 11 is simply installed only in the radial direction, but not overlapped, and the ends are simply pressed together. Even if the dimensional accuracy of the inner periphery of the holding part 11a is poor, it is only necessary to change the overlapping margin of the overlapping part, and it is possible to prevent the opening part 10c from opening and the refrigerant pipe 4 from falling off, resulting in an extremely stable prevention. A shaking effect can be obtained.

Effects of the Invention As described above, the present invention provides a support leg that is provided at the end of a cylindrical sealed case and whose central axis is located approximately in the same vicinity as the axis of the electric compression element that is directly fixedly housed within the sealed case. a vibration-proof support member that holds the support leg and is made of an elastic member; and a support fitting that has a holding part for mounting the vibration-proof support member on the inner periphery; an opening and
The support leg has a groove portion to which the support leg is attached by being inserted through the opening, and one end of the opening covers the support leg and has an end shape such that it overlaps with the other end. The support device for the rotary compressor has a part with a notch into which the support leg can be inserted, and the support device has a supporting effect at a position with low vibration, and the vibration isolating support member provides vibration isolation. Both of these effects provide vibration-proof support with an extremely small amount of vibration transmission, and since the vibration-proof support member and support metal fittings can be installed after the rotary compressor is installed in the refrigeration equipment body, it is possible to prevent vibrations caused by heat during welding, etc. By preventing the vibration-proofing effect from deteriorating due to damage to the vibration-proofing support member, and further preventing the vibration-proofing effect from deteriorating due to the support legs falling off from the vibration-proofing support member, it is possible to improve the performance of rotary compressors. This makes it possible to suppress the generation of noise caused by vibrations being transmitted to the refrigeration system body.

[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 refrigerant piping of the support device attached, Fig. 6 is a side view of the support device, Fig. 6 is a front view of a conventional support device of a rotary compressor, FIG. 7 is a side view of the support device. 2... Sealed case, 4... Refrigerant piping,
6...Axis center, 10...-Vibration isolation support member,
10a...Groove portion, 10b...Outer peripheral portion,
10c...Opening, 1od/10e...
・End part, 11...Supporting metal fitting, 11a...
- Holding part, 11b...notch part. Name of agent: Patent attorney Shigetaka Awano and 1 other person2
... Hakama part groove 蓼外閏斏 So WRa super crow Ikushi Shibuki & KoaW 10...-Ff Seishi f1 part shin--... full part 10b-1 outside l [I is IQe--... Simple O 輼 materials branch F! 1LII 2-1 Closed goose 4-・Skilled fly piping 5 ... k and

Claims (1)

[Claims] a support leg that is provided at an end of a cylindrical sealed case and whose central axis is located approximately in the same vicinity as the axis of an electric compression element that is directly fixedly stored in the sealed case; The anti-vibration support member includes an anti-vibration support member made of an elastic member, and a support fitting having a holding part for attaching the anti-vibration support member to the inner periphery. It has a groove in which the support leg is attached by being inserted through the opening, and one end of the opening has an end shape that covers the support leg and overlaps the other end,
A support device for a rotary compressor, wherein the support fitting has a notch portion into which the support leg can be inserted.