JP2015209809A - Compressor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such the problem that a conventional compressor has a concern that an elastic member arranged at a lateral face of an accumulator displaces in an axial direction of the accumulator.SOLUTION: In a compressor, a recessed part 24 to which a rubber member 50 (elastic member) is fitted is formed at the lateral face of the accumulator 2, and the rubber member 50 (elastic member) includes a projected part projected on an outer peripheral side relative to the lateral face of the accumulator 2 while being fitted to the recessed part 24. The accumulator 2 is fixed to a support base 30 while the support base 30 comes into contact with the projected part of the rubber member 50.

Description

  The present invention relates to a compressor including a fixing mechanism for fixing an accumulator to a compressor body.

  As a conventional fixing mechanism of the compressor, a support base provided in the compressor main body, an elastic member (rubber member) disposed on the side surface of the accumulator, a fixing band for fixing the side surface of the accumulator to the support base, There is something with. By this fixed band, the accumulator is pressed against the compressor body in a state where the support base and the elastic member are in contact with each other.

Japanese Patent No. 4591619

  By the way, in the above compressor, the elastic member is simply wound around the cylindrical portion of the accumulator (a flat surface having no irregularities), and therefore the elastic member may be displaced in the axial direction of the accumulator. As a result, the vibration eigenvalues of the accumulator vary and the product sound of the compressor may vary.

  Accordingly, an object of the present invention is to provide a compressor capable of preventing the elastic member from shifting in the axial direction of the accumulator.

  A compressor according to a first aspect of the present invention includes a compressor main body that accommodates a compression mechanism and a drive mechanism, an accumulator disposed on a side of the compressor main body, and fixing for fixing the accumulator to the compressor main body. The fixing mechanism is provided between the accumulator and the support base, a support base provided in the compressor body, a fixing member for fixing a side surface of the accumulator to the support base, and A concave portion into which the elastic member is fitted is formed on a side surface of the accumulator, and the elastic member is outer peripheral than the side surface of the accumulator in a state of being fitted in the concave portion. The accumulator is fixed to the support base in a state where the support base is in contact with the protrusion of the elastic member. That.

  In this compressor, the concave portion is formed on the side surface of the accumulator, and the elastic member is fitted in the concave portion, so that the elastic member can be prevented from shifting in the axial direction of the accumulator. As a result, variation in the vibration eigenvalue of the accumulator can be reduced, and the product sound of the compressor can be prevented from varying.

  The compressor concerning 2nd invention is a compressor concerning 1st invention, The front-end | tip part of the said protrusion part is comprised convexly toward the said support stand, It is characterized by the above-mentioned.

  In this compressor, since the tip of the protruding portion of the elastic member is formed in a convex shape toward the support base, the mounting position of the accumulator on the support base depends on factors such as dimensional tolerance and mounting accuracy of each member of the compressor. Even if there is a variation, the elastic member and the support base always come into contact with each other at a portion formed in a convex shape. Therefore, the contact position between the elastic member and the support base is stabilized. As a result, variation in the vibration eigenvalue of the accumulator can be further reduced.

  A compressor according to a third aspect of the present invention is the compressor according to the second aspect, wherein the elastic member is an O-ring.

  In this compressor, since the elastic member is an O-ring, the elastic member can be easily fitted into the recess formed on the side surface of the accumulator, and the assembly is excellent. Moreover, since a general-purpose product can be used for the elastic member, the cost of the elastic member can be reduced.

  A compressor according to a fourth invention is the compressor according to any one of the first to third inventions, wherein the recess is formed along a circumferential direction of the accumulator, and the elastic member is the recess. It fits in the whole circumferential direction of this.

  In this compressor, since the elastic member is fitted in the entire circumferential direction of the recess formed on the side surface of the accumulator, it is possible to prevent water droplets from entering the recess and rusting the recess.

  A compressor according to a fifth invention is the compressor according to any one of the first to fourth inventions, wherein the accumulator is formed by drawing both ends of the cylindrical member. Features.

  In this compressor, in the compressor in which the accumulator is formed by drawing both ends of the cylindrical member (one-piece accumulator), the elastic member can be prevented from shifting in the axial direction of the accumulator.

  A compressor according to a sixth invention is the compressor according to any one of the first to fifth inventions, and has an internal member fixed to an inner surface of the accumulator, and the concave portion is an axial direction of the accumulator. In the substantially same position as the internal member.

  In this compressor, since the elastic member is fitted into the concave portion for fixing the internal member to the inner side surface of the accumulator, the concave portion for fixing the internal member to the inner side surface of the accumulator and the concave portion into which the elastic member is fitted Can be shared.

  As described above, according to the present invention, the following effects can be obtained.

  In the first invention, since the concave portion is formed on the side surface of the accumulator, and the elastic member is fitted in the concave portion, the elastic member can be prevented from shifting in the axial direction of the accumulator. As a result, variation in the vibration eigenvalue of the accumulator can be reduced, and the product sound of the compressor can be prevented from varying.

  In the second aspect of the invention, since the tip of the protruding portion of the elastic member is formed in a convex shape toward the support base, the accumulator is attached to the support base due to factors such as dimensional tolerance and mounting accuracy of each member of the compressor. Even if the positions vary, the elastic member and the support base always come into contact with each other in a convex configuration. Therefore, the contact position between the elastic member and the support base is stabilized. As a result, variation in the vibration eigenvalue of the accumulator can be further reduced.

  In the third invention, since the elastic member is an O-ring, the elastic member can be easily fitted into the recess formed on the side surface of the accumulator, and the assembly is excellent. Moreover, since a general-purpose product can be used for the elastic member, the cost of the elastic member can be reduced.

  In the fourth invention, since the elastic member is fitted in the entire circumferential direction of the concave portion formed on the side surface of the accumulator, it is possible to prevent the concave portion from being rusted due to water droplets entering the concave portion.

  In the fifth invention, in the compressor in which the accumulator is formed by drawing both ends of the cylindrical member (one-piece accumulator), the elastic member can be prevented from shifting in the axial direction of the accumulator.

  In the sixth aspect of the invention, since the elastic member is fitted into the concave portion for fixing the internal member to the inner side surface of the accumulator, the concave portion for fixing the internal member to the inner side surface of the accumulator and the concave portion into which the elastic member is fitted Can be shared.

It is a front view of the compressor concerning an embodiment of the present invention. It is sectional drawing of the compressor shown in FIG. It is a top view of the compressor shown in FIG. It is a perspective view of the fixing mechanism of the compressor shown in FIG. It is a VV partial sectional view of the compressor shown in FIG. It is the schematic for demonstrating the effect of the compressor shown in FIG.

  Hereinafter, embodiments of a compressor according to the present invention will be described with reference to the drawings.

[Overall configuration of compressor]
As shown in FIGS. 1 to 3, the compressor according to this embodiment includes a compressor body 1, an accumulator 2 disposed on the side of the compressor body 1, and an accumulator 2 for fixing the compressor body 1 to the compressor body 1. The fixing mechanism 3 is provided. The compressor will be described below with the vertical direction in FIG. 1 as simply the vertical direction.

[Compressor body]
As shown in FIG. 2, the compressor body 1 is, for example, a one-cylinder rotary compressor, and includes a cylindrical sealed container 10, a motor 11 (drive mechanism) disposed inside the sealed container 10, A compression mechanism 13 is disposed inside the hermetic container 10 and connected to the motor 11 via the shaft 12. The motor 11 is disposed above the compression mechanism 13. The motor 11 includes, for example, a rotor 14 and a stator 15 disposed on the radially outer side of the rotor 14, and a shaft 12 is fixed on the inner side of the rotor 14. The compression mechanism 13 compresses the refrigerant in the compression mechanism 13 by driving the motor 11. The compression mechanism 13 includes a cylinder body 16 having a compression chamber 16 a, a front head 17 disposed at the upper end of the cylinder body 16, and a rear head 18 disposed at the lower end of the cylinder body 16. In the compressor body 1, the refrigerant is sucked into the compression mechanism 13 from the accumulator 2 through the joint pipe 7 and compressed in the compression chamber 16 a of the cylinder body 16. The refrigerant compressed in the compression chamber 16 a passes through the gap between the rotor 14 and the stator 15, etc., rises in the sealed container 10, and is discharged out of the compressor body 1 from the discharge pipe 19.

[accumulator]
The accumulator 2 is a cylindrical (cylindrical in this embodiment) container that temporarily stores the refrigerant supplied to the compression mechanism 13. As shown in FIG. 2, the accumulator 2 is formed by drawing both ends of a cylindrical member (cylindrical member in the present embodiment). A cylindrical body 21 and a body Two throttle parts 22 and 23 are provided above and below the part 21. The inlet pipe 4 is connected to substantially the center of the upper throttle portion 22. The suction pipe 5 is connected to the approximate center of the lower throttle portion 23. The suction pipe 5 is inserted into a joint pipe 7 provided on the outer peripheral surface of the compressor body 1 and is welded to the inner peripheral face of the joint pipe 7. The refrigerant introduced into the accumulator 2 from the inlet pipe 4 is sucked into the compression mechanism 13 through the suction pipe 5. The suction pipe 5 has an inner pipe 6 extending upward from the lower part of the accumulator 2 inside the accumulator 2.

  On the outer peripheral surface of the body portion 21 of the accumulator 2, an annular recess 24 (along the entire circumferential direction) is formed. The concave portion 24 is for fixing the filter portion 26 (internal member) to the inner side surface of the body portion 21, and is formed, for example, by drawing the outer peripheral surface of the body portion 21. As shown in FIG. 5, the concave portion 24 has a substantially semicircular longitudinal cross-sectional shape. By forming the concave portion 24, an annular convex portion 25 that protrudes inward is formed on the inner surface of the body portion 21. Note that a rubber member 50 (elastic member) of the fixing mechanism 3 described later is fitted into the recess 24.

  The filter unit 26 is for removing foreign substances (dust) and the like contained in the refrigerant supplied from the inlet pipe 4 and includes a baffle having a circular outer shape and a filter. The filter portion 26 is press-fitted and fixed by the annular convex portion 25 described above. Therefore, the recessed part 24 exists in the substantially same position (including the vicinity of the filter part 26 in an up-down direction) in the up-down direction (axial direction of the accumulator 2).

[Fixing mechanism]
As shown in FIGS. 3 and 4, the fixing mechanism 3 is a fixing that fixes the support base 30 provided in the compressor body 1 and the outer peripheral surface (side surface) of the body portion 21 of the accumulator 2 to the support base 30. A band 40 (fixing member) and a rubber member 50 (elastic member) provided between the accumulator 2 and the support base 30 are provided.

  The support base 30 is a metal plate, and includes a welded portion 31 welded to the outer peripheral surface of the sealed container 10, extended portions 32 and 32 extending from both ends of the welded portion 31 to the accumulator 2 side, and an extended portion. 32 and 32, extending along the outer peripheral surface of the body portion 21 from the end portions of the body portion 21, and abutting portions 33 and 33 that abut against the rubber member 50, and folded portions that are folded back from the abutting portions 33 and 33 toward the compressor body 1 side. 34, 35. The contact surface which contacts the rubber member 50 among the contact portions 33 and 33 is a flat surface without unevenness. In addition, this support stand 30 is arrange | positioned above the compression mechanism 13, for example, as shown in FIG.

  The fixing band 40 (fixing member) is a metal plate, and is wound around the outer peripheral surface of the body portion 21 of the accumulator 2 and attached to the support base 30. One end of the fixed band 40 is locked to one folded portion 34 of the support base 30, and the other end of the fixed band 40 is fastened to the other folded portion 35 of the support base 30 via a fastening member 36 such as a bolt. ing.

  The rubber member 50 (elastic member) is an O-ring (rubber member having a circular cross section) and is fitted in the recess 24 described above. As described above, since the vertical cross-sectional shape of the recess 24 is semicircular, the rubber member 50 protrudes from the outer peripheral surface (side surface) of the body portion 21 of the accumulator 2 to the outer peripheral side. Therefore, the rubber member 50 is in a state of being fitted in the concave portion 24 and protrudes from the outer peripheral surface (side surface) of the body portion 21 of the accumulator 2 to the outer peripheral side (from the chain line of the rubber member 50 in FIG. 5). Also has a portion on the support base 30 side). Further, since the rubber member 50 is an O-ring, the distal end portion 52 of the protruding portion 51 is formed in a convex shape (more specifically, a curved shape) toward the support base 30.

  Therefore, in this compressor, as shown in FIGS. 3 and 5, the outer peripheral surface (side surface) of the body portion 21 of the accumulator 2 is fixed to the support base 30 in a state where the support base 30 and the rubber member 50 are in contact with each other. Is held down. Therefore, vibration generated by, for example, the motor 11 (drive mechanism) of the compressor body 1 is suppressed from being transmitted to the accumulator 2.

  Here, in the conventional compressor, as shown in FIG. 6A, the accumulator is in a state where the elastic member R arranged on the side surface of the accumulator A and the support base S provided in the compressor main body C are in contact with each other. A is pressed against the support base S. However, in this compressor, since the elastic member R is simply wound around the cylindrical portion of the accumulator A (a flat surface without unevenness), the elastic member R is moved vertically when the compressor is assembled or operated. There is a risk of shifting. For example, FIG. 6B shows an example in which the elastic member R is displaced upward. As shown in FIG. 6B, when the elastic member R is displaced upward, the contact position between the elastic member R and the support base S is when the elastic member R is wound around the normal position (in the case of FIG. 6A). ) Is shifted upward (for example, as much as h). As a result, the contact position between the elastic member and the support base with respect to the accumulator changes, so that the vibration eigenvalue of the accumulator changes. For this reason, in the conventional compressor, there is a possibility that the vibration eigenvalue of the accumulator may vary due to the elastic member being displaced in the axial direction of the accumulator.

  On the other hand, in the compressor of the present embodiment, as shown in FIG. 6C, the rubber member 50 (elastic member) is fitted in the recess 24 formed on the side surface of the accumulator 2, so that the rubber member 50 is The accumulator 2 is reliably positioned. Therefore, the rubber member 50 is prevented from being displaced in the axial direction of the accumulator 2. As a result, unlike the conventional compressor, the elastic member is not displaced in the axial direction of the accumulator, and variation in the vibration eigenvalue of the accumulator is suppressed.

<Characteristics of the compressor of this embodiment>
The compressor of this embodiment has the following characteristics.

  In the compressor according to the present embodiment, as shown in FIG. 5, a concave portion 24 is formed on the outer peripheral surface (side surface) of the body portion 21 of the accumulator 2, and a rubber member 50 (elastic member) is fitted into the concave portion 24. Therefore, the rubber member 50 can be prevented from shifting in the axial direction of the accumulator 2. As a result, variation in the vibration eigenvalue of the accumulator 2 can be reduced, and the product sound of the compressor can be prevented from varying.

  Moreover, in the compressor of this embodiment, since the front-end | tip part 52 of the protrusion part 51 of the rubber member 50 (elastic member) is comprised in convex shape toward the contact parts 33 and 33 of the support stand 30, the compressor Even if the mounting position of the accumulator 2 on the support base 30 varies due to factors such as the dimensional tolerance of each member and the mounting accuracy, the rubber member 50 and the support base 30 are always in contact with each other in a convex configuration. Therefore, the contact position between the rubber member 50 and the support base 30 is stabilized. As a result, variation in the vibration eigenvalue of the accumulator 2 can be further reduced.

  Moreover, in the compressor of this embodiment, since the rubber member 50 (elastic member) is an O-ring, the rubber member 50 is easily fitted in the recess 24 formed on the outer peripheral surface (side surface) of the body portion 21 of the accumulator 2. And can be assembled easily. Moreover, since a general-purpose product can be used for the rubber member 50, the cost of the rubber member 50 can be reduced.

  Further, in the compressor according to the present embodiment, the rubber member 50 (elastic member) is fitted in the entire circumferential direction of the concave portion 24 formed on the outer peripheral surface (side surface) of the body portion 21 of the accumulator 2. It is possible to prevent the concave portion 24 from being rusted due to water droplets entering.

  Further, in the compressor of the present embodiment, in the compressor in which the accumulator 2 is formed by drawing both ends of the cylindrical member (one piece accumulator), the rubber member 50 (elastic member) is the accumulator 2. Can be prevented from shifting in the axial direction.

  Further, in the compressor of the present embodiment, the rubber member 50 (elastic member) is fitted into the concave portion 24 for fixing the filter portion 26 (internal member) to the inner surface of the accumulator 2, so that the filter portion 26 (internal The recess for fixing the member) to the inner surface of the accumulator 2 and the recess for fitting the rubber member 50 (elastic member) can be made common.

  As mentioned above, although embodiment of this invention was described based on drawing, it should be thought that a specific structure is not limited to these embodiment. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes meanings equivalent to the scope of claims for patent and all modifications within the scope.

[Modification]
In the above embodiment, as shown in FIG. 5, the diameter of the rubber member 50 (O-ring) is substantially the same as the width of the recess 24, but the rubber member 50 is not used when the compressor is assembled or operated. As long as the accumulator 2 does not deviate in the axial direction, the diameter of the rubber member 50 may be larger than the width of the recess.

  In the above embodiment, the rubber member 50 (elastic member) is an O-ring. For example, the rubber member is plate-shaped and protrudes from the side surface of the accumulator 2 to the outer peripheral side in a state of being fitted in the recess 24. A protrusion may be provided, and the tip of the protrusion may be formed in a convex shape toward the support base 30.

  Moreover, in the said embodiment, although the front-end | tip part 52 of the rubber member 50 (elastic member) is comprised in convex shape toward the support stand 30, for example, the outer peripheral surface of the rubber member 50 is a flat surface without an unevenness | corrugation. Also good. That is, the entire outer peripheral surface of the rubber member 50 may come into contact with the contact portions 33 and 33 of the support base 30 in a longitudinal sectional view.

  Moreover, in the said embodiment, although the recessed part 24 is cyclic | annular, the recessed part 24 should just be formed in the part facing the contact parts 33 and 33 of the support stand 30 among the side surfaces of the accumulator 2. FIG.

  Moreover, in the said embodiment, since the recessed part 24 is cyclic | annular and the rubber member 50 (elastic member) is an O-ring (a cross-sectional shape is circular), the rubber member 50 fits into the recessed part 24 in the whole circumferential direction. The cross-sectional shape of the rubber member 50 may not be circular, and the rubber member 50 may be fitted in a part of the circumferential direction of the recess 24.

  Moreover, in the said embodiment, although the recessed part 24 is formed by drawing the outer peripheral surface of the trunk | drum 21, it may be formed by cutting the outer peripheral surface of the trunk | drum 21. FIG.

  Moreover, in the said embodiment, although the recessed part 24 is formed in the outer peripheral surface of the trunk | drum 21, it may be formed anywhere as long as it is the side surface of the accumulator 2. FIG.

  Moreover, in the said embodiment, although the accumulator 2 is what was formed by drawing both ends of a cylindrical member (for example, cylindrical member) (1 piece accumulator), it is not restricted to it. For example, the accumulator has two bowl-shaped casings in which one end of a cylindrical member is press-processed, and the other ends of the two casings are welded (two-piece accumulator). There may be.

  Moreover, in the said embodiment, although the recessed part 24 with which the rubber member 50 (elastic member) fits is in the substantially same position as the filter part 26 (internal member) in the axial direction of the accumulator 2, it may exist in a different position. . Therefore, the concave portion into which the rubber member 50 (elastic member) is fitted and the concave portion for fixing the filter portion 26 (internal member) may be different, or the filter portion 26 (internal member) may not be provided. .

  Moreover, in the said embodiment, although an internal member is the filter part 26, an internal member is arrange | positioned at the outer peripheral side of the inner side piping 6, and the cylindrical reinforcement member which reinforces the inner surface of the accumulator 2, or reinforces the inner piping 6. It may be.

  By utilizing the present invention, it is possible to prevent the elastic member from shifting in the axial direction of the accumulator.

DESCRIPTION OF SYMBOLS 1 Compressor body 2 Accumulator 3 Fixing mechanism 11 Motor (drive mechanism)
13 Compression mechanism 24 Concave part 26 Filter part (internal member)
30 Support base 40 Fixing band (fixing member)
50 Rubber member (elastic member)
51 Projection 52 Tip

Claims (6)

A compressor body that houses the compression mechanism and the drive mechanism;
An accumulator disposed on the side of the compressor body;
A fixing mechanism for fixing the accumulator to the compressor body,
The fixing mechanism is
A support provided in the compressor body;
A fixing member for fixing a side surface of the accumulator to the support base;
An elastic member provided between the accumulator and the support,
The side surface of the accumulator is formed with a recess into which the elastic member is fitted,
The elastic member has a protruding portion that protrudes from the side surface of the accumulator to the outer peripheral side in a state of being fitted into the concave portion,
The accumulator is fixed to the support base in a state where the support base is in contact with the protruding portion of the elastic member.   The compressor according to claim 1, wherein a tip end portion of the projecting portion is formed in a convex shape toward the support base.   The compressor according to claim 2, wherein the elastic member is an O-ring. The recess is formed along a circumferential direction of the accumulator;
The compressor according to any one of claims 1 to 3, wherein the elastic member is fitted in the entire circumferential direction of the recess.   The compressor according to any one of claims 1 to 4, wherein the accumulator is formed by drawing both ends of a cylindrical member. An internal member fixed to the inner surface of the accumulator;
The compressor according to any one of claims 1 to 5, wherein the concave portion is substantially in the same position as the internal member in the axial direction of the accumulator.

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