JPH02248661A - Support device of rotary compressor - Google Patents

Abstract

PURPOSE:To obtain a vibration proofing effect on rotational vibration by provid ing a support leg nearly in the same position as the shaft center of an electric compressing element, and supporting this leg by a support fitting having a vibration proofing support part. CONSTITUTION:A rotary compressor 1 generates rotating vibration with a shaft core 5 as the center when a coolant is compressed. A coolant pipe line 4 is mounted on the shaft center position 3a of a mirror plate part 3 to make the shaft center 4a of the coolant pipe line 4 coincide with the shaft center 5, whereby the vibration of the coolant pipe line 4 can be reduced. A vibration proofing support part 11 consisting of an elastic member has the inner edge part 11a continuously connected to the holding part 10a of a support fitting 10 by a rib 11b, and as the rib 11b is easy to deform in the rotating direction, the coolant pipe line 4 is inserted into the inner edge part 11a and fixed thereto, whereby the natural frequency to the rotating direction can be reduced, and vibration proofing effect can be obtained. The production of a noise caused by transmitting vibration to a support plate 12 through the vibration proofing support part 11 and the support fitting 10 to vibrate the support plate 12 can be also prevented.

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 order to save space, 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 rotation that occurs around the axis of the electric compression element due to load fluctuations during compression work of the electric compression element, etc. The vibrations directly vibrate the closed case, and the vibrations also pass through the support device of the compressor and vibrate the main body of the refrigeration equipment, which can generate 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 equipment or the like through the support fittings, 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.

5 and 6 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 in which an electric compression element (not shown) is directly fixedly housed, and 8 is an end plate of the airtight case. 4, the axis 4a protruding from the end plate 3 of the sealed case 2 is the axis 5 of the electric compression element.
The cylindrical refrigerant pipes on top also serve as support legs. Reference numeral 6 denotes a cylindrical anti-vibration support member made of an 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;
The support fitting 7 is tightened and fixed with screws 9.

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

When the electric compression element in the sealed case 2 compresses refrigerant, rotational vibrations are generated around the axis of the electric compression element due to load fluctuations due to compression, and the sealed case 2 mainly generates rotational vibrations around the axis 5. It vibrates. Therefore, the vibration on the axis 5 is the smallest, and the vibration of the end plate 8 is the smallest at the axis position 8a.

Therefore, the refrigerant pipe 4 is attached to the axis 3a of the end plate 3,
Furthermore, by aligning the axis 4a of the refrigerant pipe 4 with the axis 5, the vibration of the refrigerant pipe 4 can be made smaller than when it is attached to other parts, which is caused by the vibration of the refrigerant pipe 4. It is possible to suppress the generation of noise to a small level, and by reducing the vibration transmitted to the main body of the refrigeration equipment etc. through the vibration isolation support member 6 and the support metal fitting 7, the generation of noise due to vibration of the main body of the refrigeration equipment etc. is also reduced. It is something that can 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, it is difficult to reduce the spring constant in the rotation direction because the members are dense in the rotation direction, and the load of the compressor is on the lower part 6.
Since the load is concentrated on the lower part 6C of the vibration isolating support member 6,
has a higher hardness, and therefore has a higher spring constant in the rotational direction. Therefore, when the vibration of the compressor is large, it is difficult for the vibration isolation support member 6 to sufficiently absorb the vibration of the refrigerant pipe 4, and the vibration is transmitted to the refrigeration equipment body, causing noise. In addition, since it is necessary to attach the support fitting 7 after attaching the vibration-proof support member 6, it is very troublesome to install the compressor in the refrigeration equipment body, and the vibration-proof support member 6 may cause problems when attached. Therefore, there is a problem that if the vibration-proof support member 6 falls off, the vibration-proof effect cannot be obtained.

In view of the above problems, the present invention provides stable anti-vibration support,
Moreover, it provides a configuration that can be easily installed.

Means for Solving the Group Problems In order to solve the above n It consists of a support leg whose central axis is located approximately in the same vicinity as the axis of the compression element, and a support fitting that holds the support leg, and the support fitting is made of a hard material and is made of an elastic member that holds the support leg around the inner periphery. an anti-vibration support part having an inner edge portion held at the inner edge portion and ribs arranged radially from the inner edge portion; and a holding portion which integrates an end portion of the rib of the anti-vibration support portion with this end portion and fixes it to the inner periphery. The configuration is as follows.

Effect The present invention has the above-described configuration, and by providing a support leg at approximately the same position as the axis of the electric compression element, and supporting this support leg with a support fitting having a vibration-proof support part, rotational vibration can be minimized. By supporting and fixing the rotary compressor in position,
Great vibration-proofing effect against rotational vibration can be obtained. Furthermore, by providing ribs on the anti-vibration support part of the support fitting,
The ribs make the spring constant in the rotational direction extremely small, making it possible to increase the vibration damping effect. In addition, even when a large load is applied to the rotary compressor, the vibration-proof support part fixes the outer periphery of the rib to the holding part of the support fitting made of a hard material such as metal, so that the rib at the upper position can be easily The outer periphery is separated from the support metal fittings, so no load is applied to the ribs at the top, but the load is applied only to the ribs at the bottom, which prevents the ribs from becoming submerged and resulting in insufficient vibration isolation effect. It is something to do.

Furthermore, since the support metal fittings and the vibration-proof support part are integrated, it can be mounted to the compressor extremely easily and reliably.

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

1 to 4 show an embodiment of a support device for a rotary compressor according to the present invention.

In the figure, reference numeral 10 denotes a support fitting made of a metal member, on which a substantially cylindrical holding part 10a is integrally molded, and a support plate 1
2 is tightened with a screw 13. Reference numeral 11 denotes a vibration-proof support part made of an elastic member, which includes a cylindrical inner edge part 11a,
It has ribs 11b extending radially from the inner edge 11a, and is integrated with the support fitting 10 by vulcanizing and adhering the ends of the ribs 10b to the inner peripheral surface of the holding part 10a of the support fitting 10. The zero rotation type compressor 1 has two left and right sides.
It is supported and fixed by inserting and fixing the refrigerant pipe 4, which also serves as a support leg, into the inner edge 11a of the vibration-proof support part 11.

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 refrigerant, the rotary compressor 1 generates rotational vibration around the axis of the electric compression element due to load fluctuations due to compression, and the closed case 2 generates rotational vibrations around the axis of the electric compression element. The vibration is mainly caused by rotational vibration at the center. 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,
Refrigerant pipe 4t that also serves as a support leg - axis position 8a of end plate 3
By attaching it to the refrigerant pipe 4 and aligning the axis 4a of the refrigerant pipe 4 with the axis 5, the vibration of the refrigerant pipe 4 can be made smaller than when it is attached to other parts, and the refrigerant pipe 4 vibrates. The noise generated by this can be kept to a minimum.

Furthermore, the inner edge 11a of the anti-vibration support part 11 is connected to the holding part 10a of the support fitting by a rib llb, and the rib 11b
is easily deformed in the direction of rotation, so the spring constant between the inner edge 11a and the holding part 10a of the support fitting in the direction of rotation is much lower than that of a stand in which the inner edge 11a and the holding part 10a of the support fitting are integrated. By inserting and fixing the refrigerant pipe 4 into the inner edge 10a, the natural frequency in the direction of rotation can be made extremely low, resulting in a large vibration-proofing effect, and the vibration of the rotary compressor 1 can be reduced. It is also possible to prevent the generation of noise that is transmitted to the support plate 12 via the vibration-proof support part 11 and the support metal fitting 10 and is caused by the vibration of the support plate 12.

Moreover, even when a large load of the rotary compressor 1 is applied to the vibration-proof support part 11, the end of the rib 11b of the vibration-proof support part 11 is vulcanized and bonded to the holding part 10a of the support fitting made of a metal member. By doing so, the load of the rotary compressor 1 is not applied to the upper part of the rib 10b due to the upper part of the rib 10b separating from the holding part 10 & or the upper part of the holding part 10a being deformed. This prevents the lower part of the rib 10b from becoming swamped due to the load being concentrated only in the lower part, increasing the spring constant in the rotation direction and the load direction, and deteriorating the vibration isolation effect. . Therefore, an extremely stable vibration damping effect can be obtained.

Furthermore, since the vibration-proof support part 11 is integrated with the support fitting 10, it can be installed extremely easily on the rotary compressor 1, and even though the vibration-proof support part 11 is separate from the support metal fitting 10, Since the vibration-proof support part 11 does not fall off depending on how it is mounted, a reliable vibration-proof 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 in the sealed case. , a support fitting for holding the support leg; the support fitting is made of a hard material; the support fitting is made of an elastic member; A support device for a rotary compressor that includes a vibration support part and a holding part that integrates the end of the rib of the vibration isolation support part and fixes it to the inner circumference can be used to locate a position where vibration is small. Both the support effect of f and the vibration isolating effect of the vibration isolating support part having ribs can provide vibration isolating support with an extremely small amount of vibration transmitted against rotational direction vibration, and the vibration isolating support part is integrated with the support metal fittings. This prevents the load of the rotary compressor from being applied only to the lower part of the rib, which would deteriorate the vibration isolation effect in both directions of rotation and load, and provides an extremely stable vibration isolation effect. By suppressing the generation of noise caused by the transmission of vibrations of the rotary compressor to the main body of the refrigeration system, stable noise reduction of the refrigeration system can be achieved. Furthermore, since the vibration-proof support part is integrated with the support metal fitting, it can be mounted to a rotary compressor extremely easily and reliably.

[Brief explanation of drawings]

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 support fitting and a vibration-proof support part of the support device, and Fig. 3 is a perspective view of the support device. Fig. 4 is a side view of the support device, Fig. 5 is a front view of the support device of a conventional rotary compressor, and Fig. 6 is a side view of the support device. FIG. 2... Sealed case, 4... Refrigerant piping,
5...Axis center, 10...Supporting metal fittings, 10
a... Holding part, 11... Anti-vibration support part,
lla...inner edge, llb...rib. Name of agent: Patent attorney Shigetaka Awano Haka 1 person III
Figure 2 - Potato case 4 - Refrigerant piping S-S 10 - Support fitting 10a = aFuku 11 - 1 Vibration isolating support part 11α - Inner j1 part 11b -- Lip 0a - 11α - 1 - 11b -m - Support metal support part anti-vibration support part 2 - Diagram 2 - Case 5 - Glaze J Hin α-a

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 fixed and stored in the sealed case, and a support fitting that holds the support leg. The support fitting is made of a hard material, and is made of an elastic member and includes an inner edge portion for holding the support leg on the inner periphery and a vibration-proofing support portion having ribs arranged radially from the inner edge portion; A support device for a rotary compressor, comprising a holding part that integrates an end of a rib and fixes it to the inner periphery.