JPH1172085A - Accumulator fixing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an accumulator from being deformed by a concentrated load applied to it and a rubber packing from being come out due to vibration when the accumulator is installed. SOLUTION: Projections 11 and 12 are provided near both the end parts of a rubber packing 10. When the rubber packing 10 is wound on an accumulator 3 and fixed pressingly to it with a band 20, holes 21 and 22 are provided in the band 20 at the positions with which two projections 11 and 12 are brought in contact. In this case, a distance between the projections in the rubber packing 10 and the end part near the projections is halved or suitably reduced rather smaller than that between the holes 21 and 22 provided in the band 20. Thus the concentration of load can be prevented by winding the rubber packing 10 on the accumulator 30 so that the end part of the rubber packing 10 is not overlapped, and also the rubber packing 10 is prevented from being come out by engaging the projections 11 and 12 with the holes 21 and 22 so as to engage the rubber packing 10 with the band 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention prevents the concentration of a fixed load when fixing an accumulator which is disposed on the suction side of a compressor such as a rotary compressor and performs gas-liquid separation.
The present invention relates to an accumulator fixing device in which the fixing does not loosen due to vibration or the like.

[0002]

2. Description of the Related Art A refrigeration system is used in various technical fields, and a refrigeration cycle and a heat pump are operated mainly with a compressor, a condenser, an expansion valve, an evaporator and the like.
For example, in a refrigeration cycle, a refrigerant is compressed by a compressor into hot gas, and then the hot gas is heat-exchanged with outside air or the like by a condenser to become a liquefied refrigerant. Then, the liquefied refrigerant is expanded by an expansion valve to lower the temperature, and exchanges heat with a load in an evaporator.
Thereby, the load is cooled.

At this time, if the load fluctuates suddenly, for example,
The refrigerant in the evaporator may boil violently, and the liquid refrigerant may return to the compressor. In this case, the compressor compresses the liquid refrigerant, which may cause damage to the compressor.

Therefore, an accumulator is provided on the suction side of the compressor to perform gas-liquid separation so that only gas is sucked into the compressor.

FIG. 4 shows such an accumulator 3 connected to the compressor 2.
The accumulator 3 is fixed to the main body of the compressor 2 by a band 5 and a bracket 6 via a rubber band 4 in a side view when the battery is fixed to the compressor. Then, the refrigerant enters the accumulator 3 from the inlet 7, is separated into gas and liquid, and is sucked into the compressor 2 through the suction pipe 8.

FIG. 5 is an exploded view showing the mounting of the accumulator 3, and the mounting of the accumulator 3 will be described with reference to FIG.

First, the rubber packing 4 is attached to the accumulator 3.
And temporarily fixed with a tape or the like, and set on a bracket 6 previously fixed to the compressor 2.

In such a state, one end of the band 5 is engaged with the corresponding end of the bracket 6, and the other end is screwed to the corresponding end of the bracket 6 using a screw 9.

[0009]

However, if the rubber packing 4 is longer than the circumference of the accumulator 3, the ends thereof overlap and the load due to screwing is concentrated on the corresponding portion. Therefore, there is a problem that the accumulator 3 is easily deformed even when the screwing load is small.

For this reason, it is necessary to reduce the screwing force. In this case, however, the deformation area and the amount of deformation of the rubber packing 4 become small. There is a problem that comes off.

Accordingly, an object of the present invention is to provide an accumulator fixing device in which deformation of the accumulator and loosening of the rubber packing are unlikely to occur.

[0012]

According to a first aspect of the present invention, there is provided a bracket, an elastic member wound around an accumulator, and an elastic member engaged with both ends of the bracket. And a band for pressing and fixing the accumulator to the bracket via the intermediary member, wherein projections are respectively provided near both ends of the elastic member. Further, when the elastic member is wound around the accumulator and pressed and fixed by the band, a hole is provided at a position of the band where the two projections come into contact. This prevents the elastic member and the band from engaging with each other by fitting the projection and the hole, thereby preventing the elastic member from coming off.

According to a second aspect of the present invention, the distance between the end of the elastic member and the projection provided in the vicinity thereof is equal to half of the distance between the two holes provided in the band or appropriately reduced. It is characterized in that when the projection is fitted in the hole, the ends of the band are not overlapped so that the load by the band does not become a concentrated load.

According to a third aspect of the present invention, when the projection is fitted into the hole, the distance between the projections is set so that the elastic member between the projections is appropriately extended, and the elastic member is attached to the accumulator. It is characterized in that the elastic member is hardly detached by being brought into close contact.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a rubber packing 10 which is an elastic member constituting the accumulator fixing device.
Shows a perspective view of the band 20.

In the following description, the elastic member will be described as being limited to rubber packing, but the present invention is not limited to this, and it is noted that a resin or the like having relatively high elasticity can be used. Keep it.

A protrusion 1 is provided near the end of the rubber packing 10.
1 and 12 are provided, and approximately in the center of the band 20,
Holes 21 and 22 are provided at predetermined intervals. In the following description, a region between the protrusions 11 and 12 and the end of the rubber packing 10 is referred to as an end region, and a region between the protrusions 11 and 12 is referred to as a center region.

The distance L1 of the end region of the rubber packing 10
Is formed to be half of the distance L3 between the holes 21 and 22 provided in the band 20 or appropriately smaller, and satisfies the relationship of L3 ≧ 2 * L1 (1).

The length L4 of the rubber packing 10 is equal to or smaller than the circumference L of the accumulator 3, and satisfies the relationship of L ≧ L4 = 2 * L1 + L2 (2).

Next, a procedure for fixing the accumulator 3 to the compressor 2 using the accumulator fixing device having the above configuration will be described with reference to FIG. Needless to say, the accumulator 3 does not necessarily have to be fixed to the compressor 2 and may be fixed to, for example, a housing of an apparatus in which the compressor 2 is used.

The bracket 6 is fixed to the compressor 2. The rubber packing 10 is wound around the accumulator 3, and the band 20 is addressed from above. At this time, the rubber packing 10
May be temporarily fixed with a tape or the like. And rubber packing 1
The zero protrusions 11 and 12 are fitted into the holes 21 and 22 of the band 20.

Thereafter, one end of the band 20 is attached to the bracket 6.
And the other end is fixed to the corresponding end of the bracket 6 using a screw 9 or the like.

The accumulator 3 has a rubber packing 1
After the coil 0 is wound on the bracket 6 and the band 20 is set, the accumulator 3 is fixed by fixing the protrusions 11 and 12 of the rubber packing 10 to the holes 21 and 22 of the band 20 while addressing the band 20. good.

Length L1 of end region of rubber packing 10
Is set so as to satisfy Expression 1, so that when the equal sign is satisfied in Expression 1, both ends are in contact, and when the inequality sign is satisfied, a gap is generated at both ends.

Accordingly, the ends of the rubber packing 10 do not overlap, thereby preventing the occurrence of load concentration, and the accumulator 3 is not easily deformed even if the screw 9 is overtightened.

Since the length of the rubber packing 10 is set so as to satisfy the equation (2), when the projections 11 and 12 of the rubber packing 10 are fitted into the holes 21 and 22 of the band 20, When the inequality sign is satisfied, the central region of the rubber packing 10 is in an extended state.

Therefore, the rubber packing 10 comes into close contact with the accumulator 3 without being loosened.
Even if vibration such as is applied to the accumulator 3, the rubber packing 10 will not be displaced or come off.

[0028]

As described above, according to the first aspect of the present invention, the protrusions are provided near both ends of the elastic member, and the holes are provided in the band to fit the protrusions. It is possible to prevent a situation in which the elastic member comes off due to the engagement of the band with the projection and the hole by fitting.

According to the second aspect of the present invention, the distance between the end of the elastic member and the projection is set to be equal to half of the distance between the two holes provided in the band or to be appropriately small. When the band is fitted into the hole, both ends of the band do not overlap, and the band can be prevented from generating a concentrated load.

According to the third aspect of the present invention, when the projection is fitted into the hole, the distance between the projections is set so that the elastic member between the projections is appropriately extended. The elastic member can be brought into close contact with the accumulator, so that the elastic member can be prevented from loosening or coming off.

[Brief description of the drawings]

FIG. 1 is a perspective view of a rubber packing according to the present invention.

FIG. 2 is a perspective view of a band according to the present invention.

FIG. 3 is a diagram showing an assembling procedure of the accumulator fixing device according to the present invention.

FIG. 4 is a side view showing a state where the accumulator is attached to the compressor.

FIG. 5 is a diagram showing an assembling procedure of a conventional accumulator fixing device.

[Explanation of symbols]

 2 Compressor 3 Accumulator 6 Bracket 10 Rubber packing 11, 12 Projection 20 Band 21, 22 hole

Claims (3)

[Claims] 1. An accumulator having a bracket, an elastic member wound around an accumulator, and a band that engages both ends of the bracket and presses and fixes the accumulator against the bracket via the elastic member. In the fixing device, projections are provided near both ends of the elastic member, and when the elastic member is wound around the accumulator and pressed and fixed by the band, the two projections come into contact with each other. An accumulator fixing device, wherein a hole is provided at a position, and the elastic member and the band are engaged with each other by fitting the protrusion and the hole. 2. A distance between an end of the elastic member and the projection provided in the vicinity of the end of the elastic member.
2. The both ends of the band are set so as to be equal to half of a distance between two holes or to be appropriately small so that both ends of the band do not overlap when the projection is fitted into the hole. An accumulator fixing device as described in the above. 3. The distance between the projections is set so that when the projection is fitted into the hole, the elastic member between the projections is appropriately extended. Or the accumulator fixing device according to 2.