JP2005061350A - Compressor equipped with accumulator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compressor provided with an accumulator of low vibration and high reliability capable of restricting inclination of the compressor due to permanent resetting of a supporting leg by aging. <P>SOLUTION: Strength is improved for the supporting leg 5a the closest to the accumulator 2 among a plurality of supporting legs 5. Plane coordinates B of the center of gravity of a hole 4 in a leg mounting member 3 are thus deflected from plane coordinates A of the center of gravity of the compressor provided with the accumulator. Even when the largest load is added to the supporting leg 5a that is the closest to the accumulator 2, inclination of the compressor due to permanent resetting of the supporting leg can be restricted because its strength is improved. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a compressor provided with an accumulator used in an air conditioner or the like.

  Conventional compressors, particularly so-called high-pressure compressors, in which the inside of a hermetic container of the compressor is generally filled with discharge gas, are generally provided with an accumulator on the suction side. This accumulator allows the compressor to suck only the gaseous refrigerant by the gas-liquid separation action even when a large amount of liquid refrigerant returns to the suction side due to the operating conditions of the refrigeration cycle connected to the compressor. Is. This prevents the deterioration of reliability due to the generation of abnormal noise due to the compression of the liquid refrigerant or the damage of the components inside the compressor.

  In addition, a leg mounting member having a plurality of holes or a plurality of leg mounting members having one or more holes is provided around the lower portion of the sealed container, and each of these holes is made of an elastic member. A support leg is attached to support the compressor.

  A typical compressor of this type is shown in FIG. 3 (see, for example, Patent Document 1).

  In FIG. 3, an accumulator 2 connected to the airtight container 1 is provided on a side surface of the airtight container 1, and a leg attachment member 3 is provided around the lower portion of the airtight container 1.

  The leg attachment member 3 has a generally equilateral triangular shape, and a hole 4 is provided in the vicinity of each corner. A support leg 5 made of an elastic member is attached to each hole 4.

  With the above configuration, the refrigerant gas flowing in from the inlet pipe 6 of the accumulator 2 is compressed by the compression mechanism (not shown) provided inside the hermetic container 1 through the accumulator 2 and then once sealed. It is discharged into the container 1 and discharged from a discharge pipe 7 provided in the sealed container 1.

Further, by supporting the compressor with the support legs 5, vibration during operation is absorbed and attenuated, and transmission of vibration to a refrigeration cycle (not shown) to which the compressor is connected is reduced.
JP 2000-291982 A (page 4, FIG. 1)

  However, in the above-described conventional configuration, when a relatively large accumulator is attached, as shown in FIG. 1, the line of action of the center of gravity A of the compressor and the centers of gravity B of a plurality of holes provided in the leg attachment members As a result, the moment acted and the compressor tilted slightly. In particular, when the displacement volume of the compressor is relatively large, the refrigeration capacity of the connected refrigeration cycle is large, and the amount of refrigerant gas enclosed in the refrigeration cycle generally needs to be increased, so a large accumulator is used. There are many cases.

In the state as described above, the largest load acts on the support leg 5 a closest to the accumulator 2 among the support legs 5 attached to the respective holes 4 of the leg attachment member 3. In this case, during the relatively initial period, the inclination of the compressor is mostly small, but the support leg 5 is made of an elastic member such as rubber or a spring, or a combination thereof. Only the support leg 5a close to 2 may be drooped.

  As a result, the inclination of the compressor increases, hits other parts of the refrigeration cycle in which the compressor is mounted, and abnormal noise may occur during operation, or the piping to which the compressor is connected is abnormal. There was a possibility that the stress would act, and in some cases, the piping would be fatigued and the refrigerant gas would leak.

  The present invention solves such a conventional problem, and an object of the present invention is to provide a compressor with low vibration and high reliability by suppressing the inclination of the compressor due to the sag of the support leg accompanying aging. .

  In order to solve the above problems, the present invention is such that at least one strength close to the accumulator is made higher than the strength of the other support legs among the plurality of support legs.

  Due to the above configuration, the plane coordinates of the center of gravity of the plurality of holes provided in the leg attachment member and the plane coordinates of the center of gravity of the compressor provided with the accumulator are shifted, so that the load is applied to the support leg closest to the accumulator. However, since the strength is increased, the inclination of the compressor due to the sag of the support leg can be suppressed.

  According to the present invention, the strength of at least one of the plurality of support legs close to the accumulator is higher than the strength of the other support legs. By shifting the plane coordinates and the plane coordinates of the center of gravity of the compressor equipped with the accumulator, even if the load is applied to the support leg closest to the accumulator, the inclination of the compressor due to the sag of the support leg can be suppressed. . Therefore, the inclination of the compressor can be suppressed even if the support leg is slackened due to aging.

  As described above, according to the present invention, the compressor hardly tilts due to the sag of the support leg even during long-term use, and a compressor with low vibration and high reliability can be obtained.

  Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1)
FIG. 1 is a top view and a front view of a compressor provided with an accumulator in Embodiment 1 of the present invention. In FIG. 1, the same components as those in the conventional technique are denoted by the same reference numerals, and the description thereof is omitted.

  In FIG. 1, the elastic modulus of the material of the supporting leg 5a closest to the accumulator 2 among the plurality of supporting legs 5 is made higher than the elastic coefficient of the material of the other supporting legs.

  With the above configuration, the plane coordinate of the center of gravity B of the plurality of holes provided in the leg mounting member and the plane coordinate of the center of gravity A of the compressor provided with the accumulator are shifted so that the load on the support leg 5a closest to the accumulator is the most loaded. Even if this occurs, the elastic modulus of the material is made higher than the elastic modulus of the material of the other support legs, so that the inclination of the compressor due to the sag of the support legs can be suppressed.

(Embodiment 2)
FIG. 2 is a top view and a front view of a compressor provided with an accumulator in Embodiment 2 of the present invention. In FIG. 2, the same components as those in the conventional technique are denoted by the same reference numerals, and the description thereof is omitted.

  In FIG. 2, among the plurality of support legs 5, the diameter of the support leg 5a closest to the accumulator 2 is made larger than the diameter of the other support legs.

  With the above configuration, the plane coordinate of the center of gravity B of the plurality of holes provided in the leg mounting member and the plane coordinate of the center of gravity A of the compressor provided with the accumulator are shifted so that the load on the support leg 5a closest to the accumulator is the most loaded. Even if this acts, the strength is increased because the diameter is made larger than the diameter of the other support legs, so that the inclination of the compressor due to the sag of the support legs can be suppressed.

  In the above-described embodiment, the case of one leg mounting member having a plurality of holes has been described, but the leg mounting member is a plurality of leg mounting members having one or more holes. However, similar actions and effects can be obtained.

  In the above-described embodiment, the case where there are three support legs has been described, but the same actions and effects can be obtained even when there are four or more support legs.

  Further, in the above-described embodiment, the case where the sealing device is installed vertically has been described. However, in a compressor provided with a horizontally installed accumulator, for example, 2 leg attachment members each having two holes are provided in the leg attachment member. Even when it is provided at a location, the same action and effect can be obtained by making the strength of the plurality of support legs closer to the accumulator higher than the strength of the other support legs.

  Further, in the above-described embodiment, the case where the strength of one supporting leg closest to the accumulator is increased has been described, but the plane coordinates of the center of gravity B of a plurality of holes provided in the leg mounting member, Similar actions and effects can be obtained even when the strength of two or more support legs closer to the accumulator is increased in accordance with the magnitude of the deviation of the plane coordinates of the center of gravity A of the compressor provided with the accumulator.

  As described above, according to the compressor according to the present invention, the compressor hardly tilts due to the sag of the support leg even during long-term use, and a low-vibration, high-reliability compressor can be obtained. Therefore, it is applicable to uses such as refrigeration equipment such as an air conditioner and a refrigerator.

The top view and front view of a compressor provided with the accumulator which show the 1st Embodiment of this invention The top view and front view of a compressor provided with the accumulator which show the 2nd Embodiment of this invention The perspective view of the compressor provided with the conventional accumulator

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Airtight container 2 Accumulator 3 Leg attachment member 4 Hole 5 Support leg 5a Support leg closest to the accumulator 6 Suction pipe 7 Discharge pipe

Claims (3)

In the compressor provided with the accumulator connected to the airtight container on the side surface of the airtight container, a leg attaching member having a plurality of holes for attaching support legs is provided around the lower part of the airtight container, A compressor equipped with an accumulator, wherein a support leg is attached to the hole, and at least one of the support legs close to the accumulator has a strength higher than that of the other support legs. 2. The compressor with an accumulator according to claim 1, wherein the elastic modulus of the material of at least one support leg close to the accumulator is higher than the elastic coefficient of the material of the other support legs. The compressor provided with an accumulator according to claim 1, wherein a diameter of at least one support leg close to the accumulator is larger than a diameter of the other support legs.

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