JP4017694B2 - Vibrating compressor - Google Patents

Vibrating compressor Download PDF

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Publication number
JP4017694B2
JP4017694B2 JP28637796A JP28637796A JP4017694B2 JP 4017694 B2 JP4017694 B2 JP 4017694B2 JP 28637796 A JP28637796 A JP 28637796A JP 28637796 A JP28637796 A JP 28637796A JP 4017694 B2 JP4017694 B2 JP 4017694B2
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Japan
Prior art keywords
piston
cylinder
fixed
resonance spring
shaft
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Expired - Fee Related
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JP28637796A
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Japanese (ja)
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JPH10131856A (en
Inventor
正則 小林
一郎 森田
誠 片山
晃一 西村
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松下冷機株式会社
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Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vibration type compressor used for a refrigeration cycle, and more particularly to reduction of sliding loss and improvement of reliability.
[0002]
[Prior art]
A conventional vibratory compressor is disclosed in Japanese Patent Laid-Open No. 04-347460. Hereinafter, an example of the conventional vibration type compressor will be described with reference to the drawings.
[0003]
Figure of conventional configuration 5 Shown in Figure 5 1 is a closed casing, 2 is a main body. The main body 2 includes a motor 3, a cylinder 4, a piston 5, a block 6, a cylinder head 7, and a resonance spring 8, and is elastically supported in the sealed casing 1 by a suspension spring (not shown).
[0004]
The motor 3 includes a stator 3a made of blunt iron and a mover 3b made of a coil, and a permanent magnet 3c is fixed to the stator 3a. The mover 3 b is connected and fixed to the piston 5 via a mover connecting member 9.
[0005]
Reference numeral 11 denotes a movable element composed of a piston 5, a movable element 3b of the motor 3, and a movable element connecting member 9. Reference numeral 12 denotes a fixed element composed of a cylinder 4, a stator 3a of the motor 3, and a block 6. .
[0006]
The resonance spring 8 has an inner peripheral portion fixed to the piston 5, an outer peripheral portion fixed to the block 6 and the stator 3 a of the motor 3, and the piston 5 can slide in the axial direction by the cylinder 4 and the resonance spring 8. So that it is supported.
[0007]
A compression chamber 10 is formed by a cylinder 4 and a piston 5.
Next, the mechanism of the vibration type compressor will be described. When the motor 3b (coil) of the motor 3 is energized by the AC power supply, a force that reciprocates in the axial direction is generated in the mover 3b (coil) due to the action of a magnetic field generated by the permanent magnet 3c. Due to this force, the piston 5 connected and fixed via the mover 3 b and the mover connecting member 9 repeats reciprocating motion in the axial direction while deforming the resonance spring 8.
[0008]
A part of the refrigerant gas from the cooling system (not shown) is discharged into the sealed casing 1 through a suction pipe (not shown). It is guided to the low pressure chamber 7 a and reaches the compression chamber 10 in the cylinder 4. The refrigerant gas that reaches the compression chamber 10 is compressed by the reciprocating motion of the piston 5 described above. The compressed refrigerant gas is once discharged into a high-pressure chamber 7b in the cylinder head 7 through a discharge valve (not shown) disposed in the cylinder head 7, and then discharged through a discharge pipe (not shown). To the cooling system.
[0009]
[Problems to be solved by the invention]
However, in the conventional configuration, when the shafts of the cylinder 4, the piston 5 and the resonance spring 8 are machined and assembled, the sliding portions of the piston 5 and the cylinder 4 are locally slid and twisted. There is a possibility that the efficiency of the compressor is reduced due to an increase in sliding loss and the reliability is lowered such as wear of the sliding portion.
[0010]
In addition, excessive deformation in the radial direction of the resonance spring 8 is caused in the inner peripheral portion of the resonance spring 8 to which the piston 5 is fixed, and excessive stress is generated in the resonance spring 8 to cause fatigue and destruction of the resonance spring 8. There was a possibility of a decrease in reliability.
[0011]
Further, in order to avoid the above-described possibility, if the processing accuracy and assembly accuracy of the components are improved, the costs of the components and the compressor may increase.
[0012]
The present invention solves the conventional excessiveness, and even if the cylinder, piston, and resonance spring are misaligned and processed and assembled, local sliding or twisting occurs in the sliding portion of the piston and cylinder. To prevent a reduction 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. In addition, in the inner periphery of the resonance spring to which the piston is fixed, excessive deformation in the radial direction of the resonance spring is prevented, and excessive stress is prevented from being generated in the resonance spring. This prevents a decrease in reliability.
[0013]
Furthermore, the conventional problems can be solved without significantly increasing the cost by improving the processing accuracy and assembly accuracy of the parts.
[0014]
Further, in the configuration as described above, when the operating pressure condition of the compressor changes, a control delay or a control error occurs during the stroke control of the piston 5, and the piston 5 collides with the cylinder head 7, the piston 5. Excessive impact force acts on the cylinder head 7 and the resonance spring 8 to reduce the reliability such as fatigue and breakage of the piston 5, cylinder head 7 and resonance spring 8 due to the impact force, and increase of noise due to the impact force. There was sex.
[0015]
The present invention solves the problems of the prior art. When the piston collides with the cylinder head due to a change in the operating pressure condition of the compressor, a control delay or a control error at the time of piston stroke control, etc., the piston , To prevent an excessive impact force from acting on the cylinder head and the resonance spring, to prevent a decrease in reliability such as fatigue and destruction of the resonance spring due to the impact force, and to an increase in noise due to the impact force.
[0016]
Further, in the conventional configuration, when the cylinder 4, the piston 5 and the resonance spring 8 are tilted and processed and assembled, local sliding or twisting occurs in the sliding portion between the piston 5 and the cylinder 4. There is a possibility that the efficiency of the compressor is reduced due to an increase in sliding loss and the reliability is lowered such as wear of the sliding portion.
[0017]
In addition, since the resonance spring 8 to which the piston 5 is fixed is inclined and deformed with respect to the axial direction, excessive stress is generated in the resonance spring 8 and there is a possibility that the reliability of the resonance spring 8 will be reduced such as fatigue or breakage. It was.
[0018]
Further, in order to avoid the above-described possibility, if the processing accuracy and assembly accuracy of the components are improved, the costs of the components and the compressor may increase.
[0019]
The present invention solves the conventional problems, and even if the cylinder, piston, and resonance spring are tilted and processed and assembled, local sliding and twisting in the sliding portion of the piston and cylinder are prevented, This prevents a reduction 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. In addition, the resonance spring with the fixed piston is prevented from being tilted and deformed in the axial direction, and excessive stress is prevented from occurring in the resonance spring, thereby preventing a decrease in reliability such as fatigue and destruction of the resonance spring. To do.
[0020]
Furthermore, the conventional problems can be solved without significantly increasing the cost by improving the processing accuracy and assembly accuracy of the parts.
[0021]
[Means for Solving the Problems]
In order to achieve this object, a vibration compressor according to the present invention includes a sealed casing, a cylinder housed in the sealed casing, a motor composed of a stator and a mover, and a piston that forms a compression chamber together with the cylinder. A shaft that is connected to the piston in the axial direction, a fixed element composed of a cylinder and a motor stator, a movable element composed of a motor mover, piston, shaft, and the like, and an inner periphery is movable A resonance spring fixed to the element and having an outer peripheral portion fixed to the fixed element, the piston has a convex portion on the anti-compression chamber side, and the piston and the shaft are connected in the axial direction by the convex portion. There is a radial gap between the shaft In addition, in the connecting portion between the piston and the shaft, a cushioning material is provided between the end surface on the anti-compression chamber side of the piston and the end surface on the compression chamber side of the shaft. .
[0022]
As a result, even if the cylinders, pistons, and resonance springs are misaligned and machined and assembled, local sliding and twisting at the sliding part of the piston and cylinder is prevented, and compression due to increased sliding loss is achieved. It prevents the reduction of reliability such as machine efficiency reduction and sliding part wear. In addition, in the inner periphery of the resonance spring to which the piston is fixed, excessive deformation in the radial direction of the resonance spring is prevented, and excessive stress is prevented from being generated in the resonance spring. This prevents a decrease in reliability.
[0023]
Furthermore, the above effects can be obtained without significantly increasing the cost by improving the processing accuracy and assembly accuracy of the parts.
[0024]
Furthermore, when the operating pressure conditions of the compressor change, control delays or control errors occur during piston stroke control, etc., when the piston collides with the cylinder head, excessive impact force is applied to the piston, cylinder head, and resonance spring. , And a decrease in reliability such as fatigue and destruction of the resonance spring due to the impact force, and an increase in noise due to the impact force.
[0025]
Further, a sealed casing, a cylinder housed in the sealed casing, a piston that forms a compression chamber together with the cylinder, and a movable element of the motor connected thereto, a fixed element constituted by a cylinder, a stator of the motor, and the like, A movable element composed of a motor mover or a piston, a resonance spring fixed to a spring fixing member having an inner peripheral portion fixed to the movable element and having a curvature at the outer peripheral portion, and a spring fixing member to the inner peripheral portion; The same or slightly larger curvature radius And a curvature member fitted to the spring fixing member and fixed to the fixing element.
[0026]
As a result, even if the cylinder, piston, and resonance spring are tilted and processed and assembled, local sliding and twisting at the sliding part of the piston and cylinder are prevented, and the efficiency of the compressor due to increased sliding loss. This prevents deterioration of reliability such as deterioration and wear of sliding parts. In addition, the resonance spring with the fixed piston is prevented from being tilted and deformed in the axial direction, and excessive stress is prevented from being generated in the resonance spring. under To prevent.
[0027]
Furthermore, the above effects can be obtained without significantly increasing the cost by improving the processing accuracy and assembly accuracy of the parts.
[0028]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 of the present invention includes a hermetic casing, a cylinder housed in the hermetic casing, a motor composed of a stator and a mover, a piston that forms a compression chamber together with the cylinder, and a piston A shaft connected in the axial direction, a fixed element composed of a cylinder or motor stator, a movable element composed of a motor mover, piston, shaft, etc., and an inner peripheral portion fixed to the movable element And a piston having a convex portion on the side opposite to the compression chamber, the piston and the shaft being connected in the axial direction by the convex portion, and between the convex portion and the shaft. In addition to providing a gap in the radial direction, a cushioning material is provided between the piston's anticompression chamber side end surface and the shaft's compression chamber side end surface at the piston / shaft connection. Even if the cylinders, pistons, and resonance springs are misaligned and processed and assembled, they prevent local sliding and twisting at the sliding part of the piston and cylinder, and increase sliding loss. It has an effect of preventing a reduction in reliability such as a reduction in efficiency of the compressor and wear of the sliding portion.
[0029]
In addition, in the inner periphery of the resonance spring to which the piston is fixed, excessive deformation in the radial direction of the resonance spring is prevented, and excessive stress is prevented from being generated in the resonance spring. It has the effect | action of preventing such reliability fall.
[0030]
Furthermore, the above effect can be obtained without significantly increasing the cost by improving the processing accuracy and assembly accuracy of the parts.
[0031]
Furthermore, when the operating pressure conditions of the compressor change, control delays or control errors occur during piston stroke control, etc., when the piston collides with the cylinder head, excessive impact force is applied to the piston, cylinder head, and resonance spring. Has a function of preventing a decrease in reliability such as fatigue and destruction of the piston, cylinder head, and resonance spring due to the impact force, and an increase in noise due to the impact.
[0032]
The invention according to claim 2 includes a sealed casing, a cylinder housed in the sealed casing, a piston that forms a compression chamber together with the cylinder, and a motor mover connected thereto, a cylinder and a motor stator, and the like. A fixed element, a movable element composed of a motor mover or a piston, a resonance spring fixed to a spring fixing member having an inner periphery fixed to the movable element and a curvature at the outer periphery, and an inner periphery The same or slightly larger curvature as the spring fixing member radius Even if the cylinder, piston, and resonance spring are tilted and processed and assembled, the piston and cylinder slide part can be fitted to the spring fixing member and fixed to the fixing element. The occurrence of local sliding and twisting is prevented, and reduction in reliability such as reduction in compressor efficiency due to increase in sliding loss and wear of sliding portions is prevented. In addition, the resonance spring with the fixed piston is prevented from being tilted and deformed in the axial direction, and excessive stress is prevented from occurring in the resonance spring, thereby preventing a decrease in reliability such as fatigue and destruction of the resonance spring. Has the effect of
[0033]
Furthermore, the above effect can be obtained without significantly increasing the cost by improving the processing accuracy and assembly accuracy of the parts.
[0034]
Hereinafter, embodiments of the present invention will be described with reference to FIGS. 4 Will be described. In addition, about the same structure as the past, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.
[0035]
(Embodiment 1)
Embodiment 1 of the present invention will be described. 1 is a longitudinal sectional view of a vibration type compressor according to Embodiment 1 of the present invention, and FIG. 2 is a main portion of FIG. cross section FIG.
[0036]
1 and 2, reference numeral 13 denotes a shaft, which is connected in the axial direction by a convex portion 5 a of the piston 5, and is fixed to the inner peripheral portion of the resonance spring 8. Further, the convex portion 5 a of the piston 5 has a gap in the radial direction with respect to the shaft 13.
[0037]
The operation of the vibration type compressor configured as described above will be described below.
First, the compression process during compressor operation will be described. The thrust to the compression chamber 10 side generated in the mover 3b (coil) is transmitted to the shaft 13 through the mover connecting member 9, and the end surface 13a of the shaft 13 on the compression chamber 10 side and the anti-compression chamber 10 of the piston 5 are connected. The end face 5b on the side Through the cushioning material 14 Abut.
[0038]
At this time, the compression chamber 10 side of the piston 5 is fitted in the cylinder 4, and the convex portion 5 a of the piston 5 is provided with a gap in the radial direction with respect to the shaft 13. The convex portion 5a is movable in the radial direction so that the centers coincide. And the piston 5 compresses refrigerant gas, moving further to the compression chamber 10 side in the state.
[0039]
Therefore, even if the cylinders 4 and 5 are displaced and processed and assembled, it is possible to prevent local sliding and twisting at the sliding portion between the piston and the cylinder, and to increase the sliding loss. It is possible to prevent a decrease in reliability such as a decrease in efficiency and wear of the sliding portion.
[0040]
Further, due to the repulsive force stored in the resonance spring 8 due to the movement of the movable element 3b, the movable element connecting member 9, and the shaft 13 toward the anti-compression chamber 10 during the suction stroke, the shaft 13 is caused to bend in the deflection direction of the resonance spring 8. A moving force acts. Also at this time, the compression chamber 10 side of the piston 5 is fitted in the cylinder 4, and the convex portion 5 a of the piston 5 is provided with a gap in the radial direction with respect to the shaft 13. The convex portion 5a is movable in the radial direction so that the axes coincide with each other.
[0041]
Therefore, even if the cylinders 4, pistons 5 and resonance springs 8 are processed and assembled with their shafts shifted, local sliding and twisting at the sliding part of the piston and cylinder can be prevented, and sliding loss can be prevented. It is possible to prevent a reduction in reliability such as a reduction in the efficiency of the compressor due to the increase and wear of the sliding portion.
[0042]
Further, the resonance spring 8 bends in the axial direction of the shaft 13 and does not deform excessively in the radial direction. For this reason, the resonance spring 8 is prevented from being excessively deformed in the radial direction, and an excessive stress is prevented from being generated in the resonance spring, thereby preventing a decrease in reliability such as fatigue and destruction of the resonance spring. it can.
[0043]
Next, the suction stroke during compressor operation will be described. The thrust to the anti-compression chamber 10 generated in the mover 3b (coil) is transmitted to the shaft 13 through the mover connecting member 9, and the projection 13b of the shaft 13 and the end face 5c of the projection 5a of the piston 5 Abut.
[0044]
Also at this time, the compression chamber 10 side of the piston 5 is fitted in the cylinder 4, and the convex portion 5 a of the piston 5 is provided with a gap in the radial direction with respect to the shaft 13. The convex portion 5a is movable in the radial direction so that the axes coincide with each other. In this state, the piston 5 further moves toward the anti-compression chamber 10 and the refrigerant gas is sucked into the compression chamber 10.
[0045]
Therefore, even if the cylinders 4 and 5 are displaced and processed and assembled, it is possible to prevent local sliding and twisting at the sliding portion between the piston and the cylinder, and to increase the sliding loss. It is possible to prevent a decrease in reliability such as a decrease in efficiency and wear of the sliding portion.
[0046]
Further, the movable member 3b, the movable member connecting member 9, and the shaft 13 are moved to the compression chamber 10 side during the compression stroke, and the repulsive force stored in the resonant spring 8 is moved to the shaft 13 in the deflection direction of the resonant spring 8. Force to act. Also at this time, the compression chamber 10 side of the piston 5 is fitted in the cylinder 4, and the convex portion 5 a of the piston 5 is provided with a gap in the radial direction with respect to the shaft 13. The convex portion 5a is movable in the radial direction so that the axes coincide with each other.
[0047]
Therefore, even if the cylinders 4, pistons 5 and resonance springs 8 are processed and assembled with their shafts shifted, local sliding and twisting at the sliding part of the piston and cylinder can be prevented, and sliding loss can be prevented. It is possible to prevent a reduction in reliability such as a reduction in the efficiency of the compressor due to the increase and wear of the sliding portion.
[0048]
Further, the resonance spring 8 bends in the axial direction of the shaft 13 and does not deform excessively in the radial direction. For this reason, the resonance spring 8 is prevented from being excessively deformed in the radial direction, and an excessive stress is prevented from being generated in the resonance spring, thereby preventing a decrease in reliability such as fatigue and destruction of the resonance spring. it can.
[0049]
Furthermore, although the above effect can be obtained by improving the processing accuracy and assembly accuracy of the parts, the cost of the parts and the compressor is greatly increased at that time, so the present invention greatly increases the cost of the parts and the compressor. The above effects can be obtained without increasing the speed.
[0050]
As described above, a sealed casing, a cylinder housed in the sealed casing, a motor composed of a stator and a mover, a piston that forms a compression chamber together with the cylinder, and the piston are connected in the axial direction. A fixed element composed of a shaft, a cylinder and a motor stator, a movable element composed of a motor mover, a piston, a shaft, and the like, and an inner peripheral portion fixed to the movable element, and an outer peripheral portion fixed The piston has a convex portion on the side opposite to the compression chamber, the piston and the shaft are connected in the axial direction by the convex portion, and a gap is provided between the convex portion and the shaft in the radial direction. Therefore, even if the cylinders, pistons, and resonance springs are displaced and processed and assembled, the entire compression stroke and suction stroke can be performed. To prevent local sliding and twisting in the sliding part of the piston and cylinder, and to prevent a reduction in compressor efficiency due to an increase in sliding loss and a decrease in reliability such as wear of the sliding part. Can do.
[0051]
In addition, in the inner periphery of the resonance spring to which the piston is fixed, excessive deformation in the radial direction of the resonance spring is prevented, and excessive stress is prevented from being generated in the resonance spring. Such a decrease in reliability can be prevented.
[0052]
Furthermore, the above effects can be obtained without significantly increasing the cost by improving the processing accuracy and assembly accuracy of the parts.
[0053]
In this embodiment, the motor 3 is composed of a permanent magnet 3c and a mover 3b using a coil. However, a motor having a reciprocating motion may be implemented in the same manner even if the motor has other configurations. Is possible.
[0054]
In the present embodiment, the movable member connecting member 9 is fixed to the shaft 13, but a structure in which the movable member connecting member 9 is connected and fixed to the piston 5 can be similarly implemented.
[0055]
In this embodiment, the outer peripheral portion of the resonance spring 8 is fixed to the block 6 and the stator 3a of the motor 3. However, a configuration in which the outer periphery of the resonance spring 8 is fixed to another fixing element 12 is also possible.
[0056]
further, Reference numeral 14 denotes a cushioning material, which is disposed between the end surface 13a of the shaft 13 on the compression chamber 10 side and the end surface 5b of the piston 5 on the anti-compression chamber 10 side.
[0057]
The operation of the vibration type compressor configured as described above will be described below.
During the operation of the compressor, when the operating pressure condition of the compressor changes, for example, when the high pressure or low pressure decreases, the gas pressure load acting on the end surface of the piston 5 on the compression chamber 10 side decreases, and the piston 5 The stroke center position moves to the compression chamber 10 side, and the piston 5 collides with the cylinder head 7.
[0058]
Further, when a mechanism for controlling the stroke of the piston 5 is provided or the like, when a control delay or a control error occurs due to a change in the operating pressure condition or the like, the piston 5 collides with the cylinder head 7.
[0059]
As described above, when the piston 5 collides with the cylinder head 7, the impact force propagates to the resonance spring 13 through the piston 5 and the shaft 13. The resonance spring 13 is a plate spring which is a thin metal plate and is very weak against impact force.
[0060]
However, when the piston 5 collides with the cylinder head 7, the buffer material 14 is disposed between the end surface 5 b of the piston 5 on the anti-compression chamber 10 side and the end surface 13 a of the shaft 13 on the compression chamber 10 side. A part of the impact force generated by the collision between the cylinder head 7 and the cylinder head 7 is absorbed by the buffer material 14, and the impact force propagating to the resonance spring 14 is weakened.
[0061]
Similarly, the impact force acting on the piston 5 and the cylinder head 7 is also weakened.
Therefore, when the operating pressure condition of the compressor changes, control delay or control error occurs during piston stroke control, etc., and the piston collides with the cylinder head, excessive impact force is applied to the piston, cylinder head, and resonance spring. Can be prevented, deterioration of reliability such as fatigue and destruction of the piston, cylinder head, and resonance spring due to the impact force can be prevented, and an increase in noise due to the impact can be prevented.
[0062]
As described above, since the shock absorber is provided between the piston's anti-compression chamber side end surface and the shaft's compression chamber side end surface at the connecting portion of the piston and the shaft, the operating pressure condition of the compressor is thereby reduced. When the piston collides against the cylinder head due to changes in the stroke, piston stroke control, etc., and when the piston collides with the cylinder head, an excessive impact force is prevented from acting on the piston, cylinder head, and resonance spring. It is possible to prevent a decrease in reliability such as fatigue and destruction of the piston, cylinder head, and resonance spring due to the impact force, and to prevent an increase in noise due to the impact.
[0063]
(Example embodiment) 2 )
Embodiment of the present invention 2 Will be described. Figure 3 Is an embodiment of the present invention. 2 It is a longitudinal sectional view of the vibration type compressor by 4 Is a figure 3 FIG.
[0064]
Reference numeral 8 denotes a resonance spring, which is composed of a plate spring 8a, a spring spacer 8b, and a spring fixing member 8c and is fixed. The spring fixing member 8 c includes a curved portion 8 d on the outer peripheral portion, and the center of the curvature (R) substantially coincides with the center of the resonance spring 8, that is, the axial center of the piston 5.
[0065]
Reference numeral 15 denotes a curvature member, which is fixed to the stator 3 a of the motor 3 that is the fixing element 12. Moreover, the curvature which is the same as the curvature part 8d of the spring fixing member 8c or slightly larger is provided in the inner peripheral part. Radius of curvature A portion 15a is provided and is fitted to the curvature portion 8d of the spring fixing member 8c.
[0066]
The operation of the vibration type compressor configured as described above will be described below.
The resonance spring 8 can be freely tilted around the central portion of the resonance spring 8 because the curvature portion 8 d of the outer peripheral portion and the curvature portion 15 a of the curvature member 15 are fitted. Therefore, the piston 5 fixed at the center of the resonance spring 8 can also be freely tilted with respect to the cylinder 4.
[0067]
When the piston 5 with the resonance spring 8 fixed is assembled and operated with an inclination with respect to the cylinder 4, or when the piston 5 and the cylinder 4 are inclined to slide during the operation of the compressor, In the resonance spring 8 connected and fixed to the piston 5, the curvature portion 8d rotates along the curvature so that the piston 5 slides relative to the cylinder 4 without being inclined.
[0068]
Therefore, even if the cylinder 4 and the piston 5 are processed and assembled so as to be relatively inclined, or the piston 5 is inclined with respect to the cylinder 4 during the operation of the compressor due to some factor, the piston 5 and the cylinder 4 On the other hand, the piston 5 always slides without being inclined.
[0069]
Therefore, it is possible to prevent the occurrence of local sliding and twisting at the sliding portion of the piston 5 and the cylinder 4, and to prevent a reduction 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. can do.
[0070]
Conversely, when the piston 5 tries to slide without tilting with respect to the cylinder 4, the resonance spring 8 to which the piston 5 is fixed tends to be deformed tilted with respect to the axial direction. However, even at that time, the resonance spring 8 connected and fixed to the piston 5 is rotated along the curvature so that the piston 5 slides relative to the cylinder 4 without tilting, and the resonance spring 8 is always axial. Deform in the direction.
[0071]
Therefore, it is possible to prevent an excessive stress from being generated due to the resonance spring 8 being inclined and deformed with respect to the axial direction, and it is possible to prevent a decrease in reliability such as fatigue or destruction of the resonance spring 8.
[0072]
Furthermore, although the above effect can be obtained by improving the processing accuracy and assembly accuracy of the parts, the cost of the parts and the compressor is greatly increased at that time, so the present invention greatly increases the cost of the parts and the compressor. The above effects can be obtained without increasing the speed.
[0073]
As described above, a sealed casing, a cylinder housed in the sealed casing, a piston that forms a compression chamber together with the cylinder, and that is connected to a motor mover, and a cylinder and a motor stator are fixed. A movable element composed of an element, a motor mover, a piston, and the like, a resonance spring fixed to a spring fixing member having an inner peripheral portion fixed to the movable element and having a curvature at the outer peripheral portion, and a spring at the inner peripheral portion Same or slightly larger curvature than the fixed member radius Even if the cylinder, piston, and resonance spring are tilted and processed and assembled, the piston and cylinder slide part can be fitted to the spring fixing member and fixed to the fixing element. Prevents local sliding and twisting Shi Thus, it is possible to prevent a reduction 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.
[0074]
In addition, the resonance spring with the fixed piston is prevented from being tilted and deformed in the axial direction, and excessive stress is prevented from occurring in the resonance spring, thereby preventing a decrease in reliability such as fatigue and destruction of the resonance spring. can do.
[0075]
Furthermore, the above effects can be obtained without significantly increasing the cost by improving the processing accuracy and assembly accuracy of the parts.
[0076]
In this embodiment, the curvature member 15 is fixed to the stator 3 a of the motor 3, but it can be similarly implemented by fixing to the other fixing element 12.
[0077]
In the present embodiment, the motor 3 is composed of a permanent magnet 3c and a mover 3b using a coil. However, if the motor has a reciprocating motion, the motor 3 may be implemented in the same manner even if the motor has other configurations. Is possible.
[0078]
【The invention's effect】
As described above, a sealed casing, a cylinder housed in the sealed casing, a motor composed of a stator and a mover, a piston that forms a compression chamber together with the cylinder, and the piston are connected in the axial direction. A fixed element composed of a shaft, a cylinder and a motor stator, a movable element composed of a motor mover, a piston, a shaft, and the like, and an inner peripheral portion fixed to the movable element, and an outer peripheral portion fixed to the fixed element The piston has a convex portion on the side opposite to the compression chamber, the piston and the shaft are connected in the axial direction by the convex portion, and a gap is provided between the convex portion and the shaft in the radial direction. Preparation In addition, a cushioning material is provided between the piston's anti-compression chamber side end surface and the shaft's compression chamber side end surface at the piston / shaft connection. Therefore, even if the cylinders, pistons, and resonance springs are displaced and processed and assembled, the local sliding in the sliding part of the piston and the cylinder in the entire stroke of the compression stroke and the suction stroke is achieved. It is possible to prevent the occurrence of movement and twisting, and 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.
[0079]
In addition, in the inner periphery of the resonance spring to which the piston is fixed, excessive deformation in the radial direction of the resonance spring is prevented, and excessive stress is prevented from being generated in the resonance spring. Such a decrease in reliability can be prevented.
[0080]
Furthermore, the above effects can be obtained without significantly increasing the cost by improving the processing accuracy and assembly accuracy of the parts.
[0081]
further , When the operating pressure condition of the compressor changes, control delay or control error occurs during piston stroke control, etc., when the piston collides with the cylinder head, excessive impact force is applied to the piston, cylinder head, and resonance spring. It is possible to prevent the deterioration of reliability such as fatigue and destruction of the piston, cylinder head, and resonance spring due to the impact force, and to prevent an increase in noise due to the impact.
[0082]
In addition, a sealed casing, a cylinder housed in the sealed casing, a piston that forms a compression chamber together with the cylinder, and a movable element of the motor connected thereto, a fixed element constituted by a cylinder, a stator of the motor, and the like, A movable element composed of a motor mover or a piston, a resonance spring fixed to a spring fixing member having an inner peripheral portion fixed to the movable element and having a curvature at the outer peripheral portion, and a spring fixing member to the inner peripheral portion; Same or slightly larger curvature radius Even if the cylinder, piston, and resonant spring are tilted and processed and assembled, the piston and cylinder slide part can be fitted to the spring fixing member and fixed to the fixing element. It is possible to prevent the occurrence of local sliding and twisting, and to prevent a reduction 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.
[0083]
In addition, the resonance spring with the fixed piston is prevented from being tilted and deformed in the axial direction, and excessive stress is prevented from occurring in the resonance spring, thereby preventing a decrease in reliability such as fatigue and destruction of the resonance spring. can do.
[0084]
Furthermore, the above effects can be obtained without significantly increasing the cost by improving the processing accuracy and assembly accuracy of the parts.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a vibratory compressor according to a first embodiment of the invention.
[Figure 2] FIG. Sectional view of the main part of
FIG. 3 shows an embodiment of the present invention. 2 Longitudinal section of a vibration compressor
FIG. 4 3 Enlarged view of the main part of
FIG. 5 is a longitudinal sectional view of a conventional vibratory compressor.
[Explanation of symbols]
1 Sealed casing
3 Motor
3a Stator
3b Movable element
4 cylinders
5 piston
5a Convex
5b Anti-compression chamber side end face
8 Resonant spring
8c Spring fixing member
10 Compression chamber
11 Movable elements
12 Fixed elements
13 Shaft
13a Compression chamber side end face
14 cushioning material
15 Curvature member

Claims (2)

  1.   A sealed casing, a cylinder housed in the sealed casing, a motor composed of a stator and a mover, a piston that forms a compression chamber together with the cylinder, and a shaft that is axially connected to the piston. A fixed element constituted by the cylinder, the stator of the motor, etc., a movable element constituted by the mover of the motor, the piston, the shaft, etc., and an inner peripheral portion fixed to the movable element, A resonance spring fixed to the fixing element, the piston has a convex portion on the side opposite to the compression chamber, the piston and the shaft are connected in the axial direction by the convex portion, and the convex portion A clearance is provided between the shaft in the radial direction, and an end surface on the side opposite to the compression chamber of the piston in a connecting portion between the piston and the shaft, During the compression chamber side end face of the Yafuto, vibratory compressor provided with cushioning material.
  2. A stationary casing, a cylinder housed in the sealed casing, a piston that forms a compression chamber together with the cylinder, and is connected to a movable element of the motor, and a fixed body configured by the cylinder, the stator of the motor, and the like. An element, a movable element constituted by a mover of the motor, the piston, and the like, a resonance spring fixed to a spring fixing member having an inner peripheral portion fixed to the movable element and having a curvature on the outer peripheral portion, and an inner peripheral A vibration type compressor having a curvature radius which is the same as or slightly larger than that of the spring fixing member and is fixed to the fixing element by being fitted to the spring fixing member.
JP28637796A 1996-10-29 1996-10-29 Vibrating compressor Expired - Fee Related JP4017694B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP28637796A JP4017694B2 (en) 1996-10-29 1996-10-29 Vibrating compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP28637796A JP4017694B2 (en) 1996-10-29 1996-10-29 Vibrating compressor

Publications (2)

Publication Number Publication Date
JPH10131856A JPH10131856A (en) 1998-05-19
JP4017694B2 true JP4017694B2 (en) 2007-12-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP28637796A Expired - Fee Related JP4017694B2 (en) 1996-10-29 1996-10-29 Vibrating compressor

Country Status (1)

Country Link
JP (1) JP4017694B2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19745279A1 (en) * 1997-10-15 1999-04-22 Itt Mfg Enterprises Inc Pressure medium feed unit for hydraulic systems
BR9803560A (en) * 1998-09-09 2000-04-18 Brasil Compressores Sa Reciprocating compressor driven by linear motor.
KR100548292B1 (en) * 2003-12-29 2006-02-02 엘지전자 주식회사 Apparatus for reducing eccentric abrasion reciprocating compressor
KR100795733B1 (en) 2007-02-27 2008-01-17 (주)시대전기 Resonance type compressor

Also Published As

Publication number Publication date
JPH10131856A (en) 1998-05-19

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