JP2007292021A - Support device for compressor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce abnormal noise generated from a hermetic compressor, when the rotating speed of the hermetic compressor is abruptly changed by starting, stopping, or the like. <P>SOLUTION: An insertion part 141b of a support body 141 horizontally restricting an inner diameter part of a mounting hole 105a of a mount 105 is made of low-hardness material. Therefore, an inertial force of a rotor is released by moving the sealed vessel in a horizontal direction of the mount 105 and an electric element or a compression element is not susceptible to collision with the inside of the sealed vessel, so that the abnormal noise generated when the rotating speed is abruptly changed in such as start or stop of the hermetic compressor can be reduced. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a support device for a compressor mounted on a household refrigerator, a commercial refrigerator, an air conditioner, or the like.

  As a conventional compressor support device, vertical and horizontal vibrations generated during operation of the compressor are obtained by attaching a support body in which the insertion portion and the receiving portion are integrally formed of a material having the same hardness to the compressor. (For example, refer to Patent Document 1).

  Hereinafter, a conventional compressor support device will be described with reference to the drawings.

  FIG. 5 is a longitudinal sectional view of a conventional hermetic compressor, and FIG. 6 is a longitudinal sectional view of a conventional hermetic compressor support device.

  5 and 6, the hermetic compressor 1 is supported via a support device 60 on a plate-like substrate 31 installed at the lower part of an engine room such as a refrigerator.

  The hermetic compressor 1 stores the electric element 11 elastically supported by a plurality of springs 3 and the compression element 21 driven by the electric element 11 while the refrigerant 2 is filled in the hermetic container 1a.

  The electric element 11 includes a stator 12 connected to an external power source (not shown), and a rotor 13 disposed with a predetermined gap from the inside of the stator 12.

  The compression element 21 has a main shaft portion 22a and an eccentric shaft portion 22b, a shaft 22 that fixes the rotor 13 below, and a block 23 that is fixed above the stator 12 and forms a compression chamber 23a. The piston 25 that reciprocates in the compression chamber 23a and the connecting means 26 that connects the piston 25 and the eccentric shaft portion 22b are provided to form a reciprocating compression mechanism.

  Next, the support device 60 will be described.

  A pair of mounts 5 extending in a substantially horizontal direction are fixed to the outer peripheral portion of the sealed container 1a. Each mount 5 has a plurality of mounting holes 5a.

  Bolts 32 are erected on the substrate 31 at positions corresponding to the plurality of mounting holes 5a.

  The support body 41 is fitted into the bolt 32, and supports the hermetic compressor 1 on the substrate 31 via the mount 5.

  The support body 41 supports a bolt hole 41a into which the bolt 32 is inserted, an insertion portion 41b inserted into the inner diameter portion of the mounting hole 5a to restrain the mount 5 in the horizontal direction, and the vicinity of the mounting hole 5a of the mount 5 in the gravity direction. A receiving portion 41c is provided, and is fixed so as not to come off by a nut 33 screwed onto the tip end portion of the bolt 32.

  The insertion portion 41b and the receiving portion 41c are integrally formed of a material having the same hardness.

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

  When the stator 12 is energized from an external power source, the rotor 13 rotates with the shaft 22. Accordingly, the eccentric movement of the eccentric shaft portion 22b causes the piston 25 to reciprocate in the compression chamber 23a via the connecting means 26 to perform a predetermined compression operation for compressing the suction gas.

A load from the mount 5 that is generated when the rotational speed suddenly changes such as when the hermetic compressor is started or stopped is received by the insertion portion 41b.
JP-A-2-298678

  However, it has been found that, in the conventional configuration, abnormal noise is generated from the hermetic compressor 1 when the rotational speed suddenly changes, such as when the hermetic compressor 1 is started or stopped. This is because the inertial force of the rotor 13 rotates the electric element 11 and the compression element 21, and the electric element 11 or the compression element 21 collides with the inside of the sealed container 1a.

  The present invention solves the above-described conventional problems, and an object of the present invention is to provide a support device for a hermetic compressor that reduces abnormal noise that occurs when the rotational speed suddenly changes, such as when the hermetic compressor starts or stops. And

  In order to solve the above-described conventional problems, the compressor support device of the present invention is formed of a material having a lower hardness than the receiving portion of the insertion portion of the support, and is rotated by moving the sealed container in the horizontal direction of the mount. It has the effect of letting the child's inertial force escape.

  The support device of the hermetic compressor of the present invention avoids collision between the electric element or the compression element and the inside of the hermetic container by releasing the inertial force of the rotor by moving the hermetic container in the horizontal direction of the mount. Abnormal noise generated when the rotational speed changes suddenly, such as when the hermetic compressor is started or stopped, can be reduced.

  The invention according to claim 1 includes a bolt that is erected on a substrate, a mount that is provided with a mounting hole, and a support body that is inserted into the bolt and supports the mount. Includes a bolt hole through which the bolt penetrates, an insertion portion that horizontally restrains an inner diameter portion of the mounting hole, and a receiving portion that supports the vicinity of the mounting hole of the mount in a gravitational direction. It is made of a material whose hardness is lower than that of the receiving part. By moving the sealed container in the horizontal direction of the mount, the inertial force of the rotor is released to avoid collision between the electric element or the compression element and the sealed container. Therefore, it is possible to reduce noise generated when the rotational speed changes suddenly, such as when the hermetic compressor is started or stopped.

  In addition to the invention described in claim 1, the invention described in claim 2 is a material in which a low-hardness material is interposed between the vicinity of the mounting hole of the mount and the receiving portion. The contact surface becomes flexible, so that the inertial force of the rotor can be further released by moving the airtight container in the horizontal direction of the mount without substantially reducing the rigidity of the support in the direction of gravity. Since the collision between the element and the inside of the sealed container is avoided, in addition to the effect of the invention according to claim 1, the noise generated when the rotational speed suddenly changes such as when the hermetic compressor is started or stopped is reduced. Can do.

  According to a third aspect of the present invention, in addition to the first or second aspect of the present invention, the material of the receiving portion is made of a rubber material having a hardness of 50 degrees or more, and the gravity direction of the support body Therefore, in addition to the effects of the first and second aspects of the invention, the secular change in the direction of gravity due to the weight of the hermetic compressor of the support can be reduced.

  According to a fourth aspect of the present invention, in addition to the first aspect of the present invention, the insertion portion is made of a rubber material having a hardness of 35 degrees or less, and is sealed. The collision between the electric element or the compression element and the inside of the hermetic container is avoided by sufficiently releasing the inertial force of the rotor by moving the container in the horizontal direction of the mount, and therefore, any one of claims 1 to 3. In addition to the effects of the invention described in (2), it is possible to reduce noise generated when the rotational speed changes suddenly, such as when the hermetic compressor is started or stopped.

  According to a fifth aspect of the present invention, in addition to the first aspect of the present invention, the material of the insertion portion is made of an elastomer resin having a hardness of 35 degrees or less, and is hermetically sealed. By moving the container in the horizontal direction of the mount, the inertial force of the rotor is released to avoid collision between the electric element or the compression element and the inside of the closed container, and the insert can be produced by injection molding. In addition to the effects of the invention according to any one of claims 1 to 3, the noise generated when the rotational speed changes suddenly, such as when the hermetic compressor is started or stopped, is reduced, and the cost is low. can do.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a longitudinal sectional view of a hermetic compressor according to Embodiment 1 of the present invention, and FIG. 2 is a longitudinal sectional view of a supporting device for the hermetic compressor according to the same embodiment.

  In FIGS. 1 and 2, the hermetic compressor 101 is supported on a plate-like substrate 131 installed in a lower part of an engine room such as a refrigerator via a support device 160.

  The hermetic compressor 101 stores the electric element 111 elastically supported by a plurality of springs 103 and the compression element 121 driven by the electric element 111 while the airtight container 101 a is filled with the refrigerant 102.

  The electric element 111 includes a stator 112 connected to an external power source (not shown), and a rotor 113 arranged with a predetermined gap from the inside of the stator 112.

  The compression element 121 has a main shaft portion 122a and an eccentric shaft portion 122b, a shaft 122 that fixes the rotor 113 below, and a block 123 that is fixed above the stator 112 and forms a compression chamber 123a. The reciprocating compression mechanism is formed by the piston 125 reciprocating in the compression chamber 123a and the connecting means 126 for connecting the piston 125 and the eccentric shaft portion 122b.

  Next, the support device 160 will be described.

  A pair of mounts 105 extending in a substantially horizontal direction are fixed to the outer peripheral portion of the sealed container 101a. Each mount 105 has a plurality of mounting holes 105a.

  Bolts 132 are erected on the board 131 at positions corresponding to the plurality of mounting holes 105a.

  The support body 141 is fitted into the bolt 132 and supports the hermetic compressor 101 on the substrate 131 via the mount 105.

  The support body 141 supports the bolt hole 141a into which the bolt 132 is inserted, the insertion portion 141b inserted into the inner diameter portion of the mounting hole 105a to restrain the mount 105 in the horizontal direction, and the vicinity of the mounting hole 105a of the mount 105 in the gravity direction. A receiving portion 141c is provided, and is fixed so as not to come off by a nut 133 screwed to the tip end portion of the bolt 132.

  The insertion portion 141b is formed of a material having a relatively low hardness, specifically, a chlorinated butyl rubber having a hardness of 32 degrees. The insertion portion 141b restrains the mount 105 in the horizontal direction. In order to sufficiently release the mount movement that occurs when the rotational speed suddenly changes such as when the hermetic compressor 101 is started or stopped, the insertion portion 141b The hardness is desirably 35 degrees or less.

  The receiving portion 141c is formed of a relatively high hardness material, specifically, ethylene propylene rubber having a hardness of 53 degrees. Note that the receiving portion 141c supports the mount 105 in the direction of gravity, and the receiving portion 141c preferably has a hardness of 50 degrees or more so that it does not change with time due to its own weight.

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

  When the stator 112 is energized from an external power source, the rotor 113 rotates with the shaft 122. Accordingly, the eccentric movement of the eccentric shaft portion 122b causes the piston 125 to reciprocate in the compression chamber 123a via the connecting means 126 to perform a predetermined compression operation for compressing the suction gas.

  At the moment when the stator 112 is energized from the external power source (when it is activated), the rotor 113 starts to rotate instantaneously, and thus the electric element 111 and the compression element 121 are rotated by reaction, and the rotation is performed by the spring 103. A load is applied to the sealed container 101a and the mount 105 via the. In addition, since the inertial force remains in the rotor 113 at the moment when the energization from the external power source to the stator 112 is interrupted (when stopped), the electric element 111 and the compression element 121 are rotated and the spring 103 is interposed. Thus, a load is applied to the sealed container 101a and the mount 105.

  As described above, the load on the mount 105 generated when starting or stopping can be absorbed without being strongly restrained by the insertion portion 141b of the support 141, so that the sealed container 101a can be displaced, and the sealed container 101a can be displaced. The relative distance between the inside and the electric element 111 or the compression element 121 is prevented from becoming zero, and the collision between the inside of the sealed container 101a and the electric element 111 or the compression element 121 is avoided.

  Therefore, it is possible to reduce noise generated when the rotational speed changes suddenly, such as when the hermetic compressor is started or stopped.

  In the present embodiment, the refrigerant to be used is not particularly illustrated, but the suction pressure at which the rotation of the electric element or the compression element increases when the rotation speed suddenly changes such as starting or stopping, for example, R22, R502, This is particularly effective when refrigerants such as R404A, R407C, R410A, and R290 are used.

  In the present embodiment, only the case of starting or starting is described as an example in which the rotational speed changes suddenly. However, the same effect can be obtained when the inverter compressor rapidly changes the rotational speed.

(Embodiment 2)
FIG. 3 is a longitudinal sectional view of a hermetic compressor according to the second embodiment of the present invention, and FIG. 4 is a longitudinal sectional view of a supporting device for the hermetic compressor according to the second embodiment.

  3 to 4, the hermetic compressor 101 is supported on a plate-like substrate 131 installed in a lower part of an engine room such as a refrigerator via a support device 260.

  The hermetic compressor 101 stores the electric element 111 elastically supported by a plurality of springs 103 and the compression element 121 driven by the electric element 111 while the airtight container 101 a is filled with the refrigerant 102.

  The electric element 111 includes a stator 112 connected to an external power source (not shown), and a rotor 113 arranged with a predetermined gap from the inside of the stator 112.

  The compression element 121 has a main shaft portion 122a and an eccentric shaft portion 122b, a shaft 122 that fixes the rotor 113 below, and a block 123 that is fixed above the stator 112 and forms a compression chamber 123a. The reciprocating compression mechanism is formed by the piston 125 reciprocating in the compression chamber 123a and the connecting means 126 for connecting the piston 125 and the eccentric shaft portion 122b.

  Next, the support device 260 will be described.

  A pair of mounts 105 extending in a substantially horizontal direction are fixed to the outer peripheral portion of the sealed container 101a. Each mount 105 has a plurality of mounting holes 105a.

  Bolts 132 are erected on the board 131 at positions corresponding to the plurality of mounting holes 105a.

  The support body 241 is fitted into the bolt 132 and supports the hermetic compressor 101 on the substrate 131 via the mount 105.

  The support 241 includes a bolt hole 241a into which the bolt 132 is inserted, an insertion portion 241b that is inserted into the inner diameter portion of the mounting hole 105a, constrains the mount 105 in the horizontal direction, and has a surface in contact with the mounting hole 105a. A receiving portion 241c for supporting the vicinity of the mounting hole 105a in the direction of gravity is provided, and is fixed so as not to come off by a nut 133 screwed to the tip end portion of the bolt 132.

  The insertion portion 241b is formed of a material having a relatively low hardness, specifically, a chlorinated butyl rubber having a hardness of 32 degrees. The insertion portion 241b constrains the mount 105 in the horizontal direction, and in order to sufficiently release the movement of the mount that occurs when the rotational speed changes suddenly, such as when the hermetic compressor 101 is started or stopped, the insertion portion 241b The hardness is desirably 35 degrees or less.

  The receiving portion 241c is formed of a material having a relatively high hardness, specifically, ethylene propylene rubber having a hardness of 53 degrees. Note that the receiving portion 241c supports the mount 105 in the direction of gravity, and the receiving portion 241c preferably has a hardness of 50 degrees or more so that it does not change with time due to its own weight.

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

  When the stator 112 is energized from an external power source, the rotor 113 rotates with the shaft 122. Accordingly, the eccentric movement of the eccentric shaft portion 122b causes the piston 125 to reciprocate in the compression chamber 123a via the connecting means 126 to perform a predetermined compression operation for compressing the suction gas.

  At the moment when the stator 112 is energized from the external power source (when it is activated), the rotor 113 starts to rotate instantaneously, and thus the electric element 111 and the compression element 121 are rotated by reaction, and the rotation is performed by the spring 103. A load is applied to the sealed container 101a and the mount 105 via the. Further, at the moment when the energization from the external power source to the stator 112 is interrupted (when it stops), the inertia force remains in the rotor 113, so the electric element 111 and the compression element 121 are rotated and the spring 103 is interposed. Thus, a load is applied to the sealed container 101a and the mount 105.

  As described above, the load applied to the mount 105 at the time of starting or stopping can be absorbed without being strongly restrained by the insertion portion 241b of the support body 241, and the surface where the mount 105 and the support body 241 are in contact with each other can be flexibly changed. Since it can move, the sealed container 101a can be greatly displaced, the relative distance between the inside of the sealed container 101a and the electric element 111 or the compression element 121 is prevented from becoming zero, and the inside of the sealed container 101a and the electric element 111 or the compression are prevented. Avoid collision of element 121.

  Therefore, it is possible to reduce noise generated when the rotational speed changes suddenly, such as when the hermetic compressor is started or stopped.

  In the present embodiment, the refrigerant to be used is not particularly illustrated, but the suction pressure at which the rotation of the electric element or the compression element increases when the rotation speed suddenly changes such as starting or stopping, for example, R22, R502, This is particularly effective when refrigerants such as R404A, R407C, R410A, and R290 are used.

  In the present embodiment, only the case of starting or starting is described as an example in which the rotational speed changes suddenly. However, the same effect can be obtained when the inverter compressor rapidly changes the rotational speed.

  In the present embodiment, the insertion portion 241b is described integrally with the portion that constrains the inner diameter portion of the mounting hole 105a in the horizontal direction and the surface that contacts the mounting hole 105a in the vicinity of the mounting hole 105a. The effect is obtained.

  As described above, the compressor support device according to the present invention can be equipped with a device that reduces abnormal noise that occurs when the rotational speed suddenly changes, such as starting or stopping, so an air conditioner or vending machine can be provided. The present invention can also be applied to a hermetic compressor used in a refrigeration cycle apparatus such as the above.

1 is a longitudinal sectional view of a hermetic compressor according to Embodiment 1 of the present invention. Longitudinal sectional view of a support device for a hermetic compressor in the same embodiment Vertical sectional view of a hermetic compressor according to Embodiment 2 of the present invention Longitudinal sectional view of a support device for a hermetic compressor in the same embodiment Vertical section of a conventional hermetic compressor Longitudinal sectional view of a conventional hermetic compressor support device

Explanation of symbols

105 mount 105a mounting hole 131 substrate 132 bolt 141, 241 support 141a, 241a bolt hole 141b, 241b insertion part 141c, 241c receiving part 160, 260 support device

Claims (5)

  A bolt provided on the substrate; a mount provided with a mounting hole; and a support body made of an elastic body inserted into the bolt and supporting the mount, wherein the support body is a bolt hole through which the bolt passes. And an insertion portion that restrains the inner diameter portion of the mounting hole in the horizontal direction, and a receiving portion that supports the vicinity of the mounting hole of the mount in the direction of gravity, and the insertion portion is made of a material having a lower hardness than the receiving portion. Support device for the formed compressor.   The compressor support device according to claim 1, wherein a low-hardness material is interposed between the vicinity of the mounting hole of the mount and the receiving portion.   The support device for a compressor according to claim 1 or 2, wherein the material of the receiving portion is made of a rubber material having a hardness of 50 degrees or more.   The compressor support device according to any one of claims 1 to 3, wherein a material of the insertion portion is made of a rubber material having a hardness of 35 degrees or less.   The support device for a compressor according to any one of claims 1 to 3, wherein a material of the insertion portion is made of an elastomer resin having a hardness of 35 degrees or less.

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