JP2000297751A - Vibration type compressor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the sliding loss of a piston and cylinder and prevent a drop of reliability by wearing, in a vibration type compressor used for a refrigeration cycle. SOLUTION: This compressor is composed of an elastic element 7 whose one part is fixed to a movable element 9 and whose one part is fixed to a block 19, and a cylinder 18 and block 19 are assembled to the same member of the other fixed element 10. By assembling the cylinder 18 to the block 19, it is prevented that the cylinder 18, piston 4 and the shaft of an elastic element are assembled in a shifted and slanted state and the sliding loss of a slide part is reduced and the wearing is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibrating compressor used for a refrigerator or an air conditioner.

[0002]

2. Description of the Related Art Conventional vibration compressors are disclosed in
An example is disclosed in Japanese Patent Application Laid-Open No. 9-195938. Hereinafter, the conventional vibrating compressor will be described with reference to the drawings.

FIG. 5 shows a conventional configuration. FIG. 5 is a longitudinal sectional view of a conventional vibratory compressor, which is internally suspended in a closed casing (not shown). In FIG. 5, reference numeral 1 denotes a main body, which is composed of a motor 2, a cylinder 3, a piston 4, a block 5, a cylinder head 6, and an elastic element 7, and is operated by a suspension spring (not shown).
It is elastically supported inside a closed casing (not shown).

[0004] The circular motor 2 includes a stator 2a,
2b and a permanent magnet 2e and a frame 2f holding the permanent magnet 2e
And a mover 2c composed of
c is fixedly connected to the piston 4. Also, the stator 2
A winding 2d is inserted in a.

Reference numeral 9 denotes a piston 4, a mover 2c of the motor 2,
A movable element 10 includes a cylinder 3, stators 2a and 2b of the motor 2, a block 5, and the like.

The elastic element 7 is formed by stacking a plurality of elastic bodies 7a. The inner peripheral part 7b of the elastic element 7 is fixed to the movable element 9, and the outer peripheral part 7c is the fixed element 10 as the elastic element base 8 which is fixed. It is fixed to. The elastic body 7a has a plate shape and functions as, for example, a spring.

The piston 4 is supported by the cylinder 3 and the elastic element 7 so as to be slidable in the axial direction. Reference numeral 11 denotes a compression chamber, which is formed by the cylinder 3 and the piston 4.

Next, the mechanism of the vibrating compressor will be described. When an electric current is applied to the winding 2d fixed to the stator 2a of the motor 2 by the AC power supply, the energization causes the permanent magnet 2
e, the permanent magnets 2e,
An axial reciprocating force is generated in the mover 2c. Due to the force, the piston 4 connected to the mover 2c deforms the elastic element 7 and resonates while utilizing the repulsive force of the elastic element 7 to efficiently reciprocate in the axial direction.

[0009] Refrigerant gas from a cooling system (not shown) is guided into the cylinder head 6 through a suction pipe (not shown) and reaches a compression chamber 11 in the cylinder 3. Compression chamber 11
Is compressed by the reciprocating motion of the piston 4 described above. The compressed refrigerant gas is once discharged into the cylinder head 6 through a discharge valve (not shown) provided in the cylinder head 6, and then cooled through a discharge pipe (not shown). Is discharged.

[0010]

However, in the above-mentioned conventional configuration, when the cylinder 3, the piston 4, and the elastic element 7 are processed or assembled with the axes thereof shifted or inclined, the cylinder 3 and the piston 4 slide. In such a part, local sliding and prying occur, and there is a possibility that the reliability may decrease such as a decrease in the efficiency of the compressor due to an increase in the sliding loss and a wear of the sliding part.

The present invention solves the conventional problems.
By preventing the cylinders, pistons, and elastic elements from being assembled with their axes shifted or inclined, local sliding and twisting can be prevented at the sliding part between the cylinder and piston, increasing the sliding loss. It is an object of the present invention to prevent a decrease in reliability such as a decrease in the efficiency of a compressor or wear of a sliding portion due to the above.

Further, when a side pressure load acts on the cylinder in such a manner that the piston tilts or the axis shifts and the axis shifts, the cylinder moves in a direction to reduce the side pressure load from the piston. It is an object of the present invention to prevent the occurrence of local sliding and prying in the sliding portion of the above, and to prevent a reduction in reliability such as a decrease in compressor efficiency and an abrasion of the sliding portion due to an increase in sliding loss.

In the above-described conventional configuration, when the cylinder 3, the piston 4, the elastic element 7, and the motor 2 are machined or assembled with their axes shifted or inclined, the sliding portion between the cylinder 3 and the piston 4 is formed. Local sliding and prying occur, and there is a possibility that reliability may decrease such as reduction in compressor efficiency due to increase in sliding loss and wear of sliding parts. Also, the gap (air gap) between the mover 2c of the motor 2 and the stators 2a, 2b is locally reduced, and the mover of the motor 2 and the stators 2a, 2b are rubbed to increase the input.
Reliability could be reduced.

[0014] Further, there is a possibility that the motor efficiency is reduced and noise is increased due to the difference in the air gap.

The present invention solves the conventional problems.
By preventing the cylinders, pistons, elastic elements, and motors from being displaced or tilted, the sliding parts between the cylinders and pistons are prevented from sliding or twisting, resulting in sliding loss. To prevent a decrease in the reliability such as a decrease in the efficiency of the compressor and a wear of the sliding portion due to an increase in the pressure. Furthermore, by securing the motor air gap uniformly and as designed, the motor efficiency is prevented from lowering, and the mover and stator of the motor are prevented from rubbing and the input is increased, thereby reducing reliability. The purpose is to prevent that. Further, it is possible to prevent the motor efficiency from being lowered and the noise from being generated due to the difference in the air gap.

[0016]

To achieve this object, the present invention provides a motor comprising a stator and a mover, a stationary element comprising a cylinder, a block and a stator of the motor, and a piston. And a movable element composed of a mover of a motor and the like, and an elastic element partially fixed or connected to the movable element and partially fixed or connected to the block. Either they are assembled on the same part of the fixing element or the cylinder is assembled on the block.

Thus, the number of parts for fixing the cylinder, the piston, and the elastic element can be reduced, and it is possible to assemble the shaft center and the inclination with high precision. As a result, sliding loss can be reduced in the sliding part between the cylinder and piston, local sliding and twisting can be prevented, and reliability such as reduced compressor efficiency due to increased sliding loss and wear of the sliding part can be reduced. It is possible to prevent the property from being lowered.

According to the present invention, the cylinder and the stator of the motor are assembled to the same member of the other fixing elements.

As a result, the number of parts for fixing the cylinder, the piston and the elastic element can be reduced, and it is possible to assemble the shaft center and the tilt with high accuracy. Therefore, it is possible to prevent the occurrence of local sliding and twisting in the sliding portion between the cylinder and the piston, and it is possible to prevent a decrease in the efficiency of the compressor due to an increase in sliding loss and a decrease in reliability such as wear of the sliding portion. .

Further, by ensuring the air gap of the motor uniformly and as designed, it is possible to prevent a decrease in motor efficiency and to prevent an increase in input due to friction between the mover and the stator of the motor. In addition, it is possible to prevent a decrease in reliability. Further, it is possible to prevent the motor efficiency from being lowered and the noise from being generated due to the difference in the air gap.

Further, the present invention provides a motor comprising a stator and a movable element, a fixed element comprising a cylinder and a stator of a motor, and a movable element comprising a piston and a movable element of a motor. And a part is fixed or connected to the movable element, a part is composed of an elastic element fixed or connected to a fixed element other than the cylinder, and the cylinder is connected to another fixed element by a flexible member. I have.

Accordingly, the cylinder, the piston, and the elastic element are machined and assembled with the axes shifted or tilted, and even if a lateral pressure load is applied to the cylinder, the piston tilts or the axis shifts to slide. Since the cylinder moves in the direction to reduce the lateral pressure load from the piston, the sliding loss can be reduced, and the occurrence of local sliding and twisting at the sliding portion between the cylinder and the piston can be prevented. It is possible to prevent a decrease in the reliability such as a decrease in the efficiency of the compressor and a wear of the sliding portion due to an increase in the dynamic loss.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is directed to a motor comprising a stator and a mover, a stationary element comprising a cylinder, a block, a stator of the motor, and the like. And a movable element composed of a mover of a motor and the like, and an elastic element partially fixed or connected to the movable element and partially fixed or connected to the block. It is assembled on the same member of the fixed element, or the cylinder is assembled on the block, reducing sliding loss by preventing local sliding at the sliding part of the cylinder and piston, This has the effect of preventing the occurrence of prying and the like, and preventing a reduction in reliability, such as a decrease in compressor efficiency or an abrasion of sliding parts due to an increase in sliding loss.

According to a second aspect of the present invention, in addition to the first aspect, the cylinder and the stator of the motor are assembled to the same member of another fixing element, and the sliding portion between the cylinder and the piston is provided. It has the effect of preventing the occurrence of local sliding and twisting, and of reducing reliability such as reduction in compressor efficiency and wear of sliding parts due to increase in sliding loss.

Further, by securing the motor air gap uniformly and as designed, the motor efficiency is prevented from being reduced, and the mover and the stator are prevented from rubbing against each other to increase the input, thereby improving reliability. Has the effect of preventing a decrease in

According to a third aspect of the present invention, there is provided a motor comprising a stator and a mover, a stationary element comprising a cylinder and a stator of the motor, and a movable element such as a piston and a motor. A movable element and an elastic element partially fixed or connected to the movable element and partially fixed or connected to a fixed element other than the cylinder, and the cylinder is connected to another fixed element by a flexible member. Even if the piston, the axial center of the elastic element is displaced or inclined and processed and assembled, even if the piston is inclined or the axial center is displaced and the side pressure load acts to slide on the cylinder, The cylinder moves in the direction to reduce the side pressure load from the piston, reducing sliding loss and preventing local sliding and twisting in the sliding part between the cylinder and piston, It has the effect of preventing reliability deterioration such as wear of the reduced efficiency and the sliding portion of the compressor due to an increase of the dynamic loss.

[0027]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS. The same components as those of the related art are denoted by the same reference numerals, and detailed description is omitted.

Embodiment 1 FIG. 1 is a longitudinal sectional view of a vibrating compressor according to Embodiment 5 of the present invention. In FIG. 1, 1
Reference numeral 8 denotes a cylinder, which is fixed to the base 20. Reference numeral 19 denotes a block in which the outer peripheral portion 7c of the elastic element 7 is fixed, and the inner peripheral portion 7b is fixed to the movable element 9. The block 19 is assembled together with the cylinder 18 on an end surface 20a of a base 20, which is one of the fixing elements 10.

The end surface 20a of the base 20 and the surface that comes into contact with the end surface 20a of the cylinder 18 and the block 19 are machined with high precision.

With the above construction, since the reference surface 20a (base 20) for assembling the cylinder 18 and the block 19 is the same,
The accuracy of assembling the end face 19b of the block 19 to which the outer peripheral portion 7c of the elastic element 7 is attached and fixed is high, and can be substantially perpendicular. Therefore, the squareness of the piston 4 and the cylinder 18 connected by the inner peripheral portion 7b of the elastic element 7 after assembly is also high.

Accordingly, it is possible to prevent the cylinder 18, the piston 4 and the elastic element 7 from being assembled with the axes thereof shifted or inclined, and the sliding portion between the cylinder 18 and the piston 4 can be locally slid or twisted. Generation can be prevented, and a decrease in reliability such as a decrease in efficiency of the compressor due to an increase in sliding loss and wear of a sliding portion can be prevented.

Another embodiment will be described with reference to FIG. FIG. 2 is a longitudinal sectional view of a vibrating compressor according to Embodiment 5 of the present invention. In FIG. 2, reference numeral 18 denotes a cylinder which is fixed to an end face 19a of a block 19. The outer peripheral portion 7c of the elastic element 7 is
b, and the inner peripheral portion 7b is fixed to the movable element 9.

With the above construction, since the components for assembling the cylinder 18 and the elastic element 7 are the same as those of the block 19, the assembly accuracy of the cylinder 18 with respect to the perpendicularity of the elastic element 7 and the piston 4 is determined. Is expensive.

Therefore, it is possible to prevent the cylinder 18, the piston 4, and the elastic element 7 from being assembled with the axes thereof shifted or inclined, and to locally slide or pry at the sliding portion between the cylinder 18 and the piston 4. Can be prevented, and a decrease in reliability such as a decrease in compressor efficiency or wear of a sliding portion due to an increase in sliding loss can be prevented.

In the above embodiment, both the cylinder 18 and the block 19 are formed on the same surface 20 of the same member (base 20).
a, but the cylinder 18 does not have to be on the same surface.
It is needless to say that the same effect can be obtained by assembling the and the block 19 together with the same member and processing the surface relating to the assembly surface of the member with high precision.

As described above, the vibration-type compressor of the present embodiment includes the motor 2 composed of the stators 2a and 2b and the mover 2c, the cylinder 18, the block 19, and the motor 2.
Element 10 constituted by stators 2a, 2b, etc.
And a movable element 9 composed of a piston 4 and a mover 2 c of the motor 2, and an elastic element 9 partially fixed or connected to the movable element 9 and partially fixed or connected to the block 19. And the cylinder 18 and the block 19 are assembled on the same member of the other fixed element 10, or the cylinder 18 is assembled on the block 19, and the shaft of the cylinder 18, the piston 4, and the elastic element 7 It is possible to prevent the assembly from being misaligned or tilted, to prevent local sliding or twisting in the sliding portion between the cylinder 18 and the piston 4, and to increase the efficiency of the compressor due to an increase in sliding loss. It is possible to prevent a decrease in reliability such as a decrease and wear of the sliding portion.

(Embodiment 2) FIG. 3 is a longitudinal sectional view of a vibrating compressor according to Embodiment 6 of the present invention. In FIG. 3, 2
Reference numeral 1 denotes a cylinder, which is fixed to the base 23. Reference numeral 19 denotes a block in which the outer peripheral portion 7c of the elastic element 7 is fixed, and the inner peripheral portion 7b is fixed to the movable element 9. The block 19 is assembled together with the cylinder 21 on an end surface 23a of a base 23 which is one of the fixing elements 10.

The end surface 23a of the base 23 and the surface that comes into contact with the end surface 23a of the cylinder 21 and the block 19 are machined with high precision.

Reference numeral 22 denotes a motor, and the stators 22a, 22
2b, permanent magnet 22e and frame 2 holding it
2f, and the movable element 22c is connected and fixed to the piston 4. Also,
A winding 22d is inserted into the stator 22a.

The stators 22a and 22b of the motor 22 also
The cylinder 21 and the block 19 are provided on the end surface 23a of the base 23.
The surfaces of the stators 22a and 22b that are in contact with the end faces 23a are also processed with high precision.

With the above construction, since the reference surface 23a (base 23) for assembling the cylinder 21 and the block 19 is the same,
The accuracy of assembling the end face 19b of the block 19 to which the outer peripheral portion 7c of the elastic element 7 is attached and fixed is high, and can be substantially perpendicular. Therefore, assembling accuracy such as the perpendicularity of the piston 4 and the cylinder 21 connected by the inner peripheral portion 7b of the elastic element 7 is high.

Accordingly, it is possible to prevent the cylinder 18, the piston 4, and the elastic element 7 from being assembled with the axes thereof shifted or inclined, and to locally slide or pry at the sliding portion between the cylinder 18 and the piston 4. Can be prevented, and a decrease in reliability such as a decrease in compressor efficiency or wear of a sliding portion due to an increase in sliding loss can be prevented.

Further, since the stators 22a and 22b of the motor 22 can be assembled substantially parallel to the piston 4 and the cylinder 21, the movable member 22c and the stators 22a and 22b connected and fixed to the piston 4 are substantially connected. It can be assembled in parallel, and the assembly can be performed by measuring and managing the air gap. Even when the compressor is reciprocating, the air gap is always uniform in the axial and radial directions, and the design value can always be maintained.

Therefore, it is possible to prevent the air gap between the mover 22c of the motor 22 and the stators 22a and 22b from being locally reduced.
c and the stators 22a and 22b rub against each other to increase the input,
It is possible to prevent a decrease in reliability.

Further, since the air gap can always be maintained at the designed value even during the reciprocating operation, it is possible to prevent the efficiency from being reduced and the noise from being generated due to the uneven air gap.

In the above embodiment, the cylinder 21, the block 19, and the stators 22a and 22b of the motor 22 are both assembled on the same surface 23a of the same member (base 23). , Block 1
9. If the stators 22a and 22b of the motor 22 are assembled into the same member, and the surface relating to the assembly surface of the member is machined with high precision, it goes without saying that the same effect can be obtained.

As described above, the vibration-type compressor of the present embodiment is different from that of the fifth embodiment in that the cylinder 21 and the stators 22a and 22b of the motor 22 are assembled on the same member of the fixed element 10, and Since the air gap between the mover 22c and the stators 22a and 22b of the motor 22 can be prevented from being locally reduced, the mover 22c and the stators 22a and 22b of the motor 22 rub against each other to increase the input, and the reliability is improved. Can be prevented from decreasing.

Further, since the air gap can always be maintained at the designed value even during the reciprocating operation, it is possible to prevent the efficiency from being lowered and the noise from being generated due to the uneven air gap.

(Embodiment 3) FIG. 4 is a longitudinal sectional view of a vibrating compressor according to Embodiment 7 of the present invention. In FIG. 4, 2
4 is a cylinder and 5 is a block. Reference numeral 25 denotes a flexible member which is partly connected and fixed to the cylinder 24 and partly connected and fixed to the block 5 which is one of the fixing elements 10. Therefore, the cylinder 24 is
And is fixedly connected to the fixing element 10 via.

With the above configuration, when the cylinder 24, the piston 4, and the elastic element 7 are machined or assembled with their axes shifted or inclined, the cylinder 2 is not operated during operation.
When the piston 4 is inclined with respect to the piston 4 or slides with its axis shifted, a lateral pressure load acts.
The flexible member 25 supporting and fixing the cylinder 2 is deformed,
4 moves in a direction to reduce the lateral pressure load from the piston 4.

Therefore, local sliding or twisting can be prevented from occurring in the sliding portion between the cylinder 24 and the piston 4.
It is possible to prevent a decrease in the reliability such as a decrease in the efficiency of the compressor and an abrasion of the sliding portion due to an increase in the sliding loss.

In this embodiment, the flexible member 25 having flexibility is connected and fixed to the block 5.
Needless to say, the same effect can be obtained even if the fixing element 10 is fixed to another fixing element 10 other than 4.

As described above, the vibration type compressor of the present embodiment has the motor 2 composed of the stators 2a and 2b and the mover 2c, the cylinder 24 and the stators 2a and 2a of the motor 2.
2b and the like, and the piston 4
And the movable element 9 constituted by the mover 2 c of the motor 2 and the elastic element 7 partially fixed or connected to the movable element 9 and partially fixed or connected to the fixed element 10 other than the cylinder 24. The cylinder 24 is connected to another fixing element 10 by a flexible member,
The cylinder 24, the piston 4, and the elastic element 7 are machined and assembled with the axes shifted or tilted. Even when the piston 4 tilts or the axis shifts with respect to the cylinder 24 during operation and a lateral pressure load acts to slide. , The cylinder 24 moves in a direction to reduce the lateral pressure load from the piston 4.

Therefore, local sliding and twisting can be prevented from occurring in the sliding portion between the cylinder 24 and the piston 4.
It is possible to prevent a decrease in the reliability such as a decrease in the efficiency of the compressor and an abrasion of the sliding portion due to an increase in the sliding loss.

The flexible member 25 having flexibility has flexibility even if the material itself has flexibility, the rigidity is low in dimension, and even if a part of the member has low rigidity. The same effect can be obtained as long as it has.

[0056]

As described above, the first aspect of the present invention provides a motor comprising a stator and a mover, a stationary element comprising a cylinder, a block, a stator of the motor, and the like. And a movable element composed of a mover of a motor and the like, and an elastic element partially fixed or connected to the movable element and partially fixed or connected to the block. Are assembled on the same piece of anchoring element, or
The cylinder is assembled into a block, which prevents the cylinder, piston, and elastic element from being displaced or tilted and assembled. The occurrence of prying can be prevented, and a decrease in reliability such as a decrease in compressor efficiency due to an increase in sliding loss and wear of sliding portions can be prevented.

According to a second aspect of the present invention, in addition to the first aspect of the present invention, the cylinder and the stator of the motor are assembled on the same member of the fixed element. It can be prevented that the air gap between the motor and the motor becomes locally small, so that the mover and the stator of the motor rub against each other to prevent an increase in input and a decrease in reliability.

Further, since the air gap can be always maintained at the designed value even during the reciprocating operation, it is possible to prevent a reduction in efficiency and the generation of noise due to an uneven air gap.

Further, the invention according to claim 3 comprises a motor constituted by a stator and a mover, a fixed element constituted by a cylinder and a stator of a motor, a mover constituted by a piston and a motor, and the like. Movable element, and an elastic element partly fixed or connected to the movable element and partly fixed or connected to a fixed element other than the cylinder, and the other fixed element is formed by a flexible member of the cylinder. The cylinder, piston and elastic element are machined and assembled with their axes shifted or tilted. Even if it acts, the cylinder moves in the direction to relieve the side pressure load from the piston, and local sliding and twisting can be prevented at the sliding part between the cylinder and piston, and sliding loss The decrease in reliability such as wear reduction in efficiency and sliding portion of the compressor due to the increase can be prevented.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a vibration compressor according to a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of Embodiment 1 of the vibration compressor according to the present invention.

FIG. 3 is a longitudinal sectional view of a vibration compressor according to a second embodiment of the present invention.

FIG. 4 is a longitudinal sectional view of a vibration compressor according to a third embodiment of the present invention.

FIG. 5 is a longitudinal sectional view of a conventional vibrating compressor.

[Explanation of symbols]

 2 Motor 2a, 2b Stator 2c Mover 4 Piston 7 Elastic element 9 Movable element 10 Fixed element 18 Cylinder 19 Block 21 Cylinder 22 Motor 22a, 22b Stator 24 Cylinder 25 Flexible member

Continuation of the front page (72) Inventor Ko Ko Inagaki 4-5-2-5 Takaida Hondori, Higashi-Osaka City, Osaka Inside Matsushita Refrigerating Machinery Co., Ltd. (72) Makoto Katayama 4-5-2-5 Takaida Hondori, Higashi-Osaka City, Osaka Prefecture No. Matsushita Refrigeration Co., Ltd. (72) Inventor Yo Yo Hayashi 4-5-2-5 Takaida Hondori, Higashi-Osaka-shi, Osaka Matsushita Refrigeration Co., Ltd. F-term (reference) 3H076 AA02 BB26 CC03 CC28 CC31 CC47 5H607 AA02 AA04 BB01 BB05 CC01 CC03 CC05 CC09 DD01 DD02 DD06 DD16 DD19 EE18 FF07 FF12 JJ08 5H633 BB08 GG02 GG06 GG17 HH03 HH07 JA03 JB01 JB05

Claims (3)

[Claims] 1. A motor constituted by a stator and a mover, a fixed element constituted by a cylinder, a block and a stator of the motor, and a movable element constituted by a piston and a mover of the motor. And a part is fixed or connected to the movable element, and a part is constituted by an elastic element fixed or connected to the block,
A vibratory compressor in which the cylinder and the block are assembled on the same member of another fixed element, or the cylinder is assembled on the block. 2. The vibratory compressor according to claim 2, wherein the cylinder and the stator of the motor are assembled on the same member of another fixing element. 3. A motor constituted by a stator and a mover, a fixed element constituted by a cylinder and a stator of the motor, and a movable element constituted by a piston and a mover of the motor. A part is fixed or connected to the movable element, and a part is composed of an elastic element fixed or connected to the fixed element other than the cylinder, and the cylinder is connected to another fixed element by a flexible member. Vibrating compressor.