JP4591619B1 - Compressor - Google Patents

Abstract

An object of the present invention is to provide a compressor that reduces variations in natural vibration characteristics of an accumulator and hardly causes variations in product sound.
A compressor 1 includes a compressor body 2, a support member 3 fixed to the compressor body 2, a cylindrical accumulator 4, a shock absorbing rubber member 5 wound around the outer periphery of the accumulator 4, and a fastening band. 6. The fastening band 6 presses the accumulator 4 against the support member 3 in a state where the support member 3 and the buffer rubber member 5 are in contact with each other. The contact surface of the support member 3 or the contact surface of the shock-absorbing rubber member 5 is a longitudinal sectional view when the central axis of the accumulator 4 is the vertical axis when the support member 3 and the shock-absorbing rubber member 5 are not in contact with each other. In FIG. 3, the curved surface is projected so as to protrude toward the other side in contact.
[Selection] Figure 3

Description

  The present invention relates to a compressor, and more particularly to a compressor in which an accumulator is fixed to a support member fixed to a compressor body by a fastening band via a buffer rubber member.

  Conventionally, there is a compressor as shown in Patent Document 1 (Japanese Patent Laid-Open No. 11-13666). This compressor mainly has a compressor main body, a support member fixed to the compressor main body, a cylindrical accumulator, a shock absorbing rubber member wound around the outer periphery of the accumulator, and a fastening band. The fastening band presses the accumulator against the support member in a state where the support member and the buffer rubber member are in contact with each other.

  In the above conventional compressor, the accumulator mounting position is likely to vary depending on factors such as the dimensional tolerance and mounting accuracy of each member, so that the contact surface between the contact surface of the support member and the buffer rubber member The position is difficult to stabilize. As a result, the conventional compressor has a problem that the natural vibration characteristics of the accumulator vary, and as a result, the product sound of the compressor tends to vary.

  An object of the present invention is to provide a compressor that reduces variations in the natural vibration characteristics of an accumulator and hardly causes variations in product sound.

  A compressor according to a first invention includes a compressor main body, a support member fixed to the compressor main body, a cylindrical accumulator, a shock absorbing rubber member wound around the outer periphery of the accumulator, and a fastening band. Yes. The fastening band presses the accumulator against the support member in a state where the support member and the buffer rubber member are in contact with each other. The contact surface of the support member or the contact surface of the shock-absorbing rubber member is in contact with the counterpart in a longitudinal sectional view when the central axis of the accumulator is the vertical axis when the support member and the shock-absorbing rubber member are not in contact. Curved so as to protrude toward the side.

  In this compressor, even if the attachment position of the accumulator to the support member varies by bending the contact surface of the support member or the contact surface of the shock absorbing rubber member so as to protrude toward the other side of contact, the support member And the shock-absorbing rubber member are reliably brought into contact with each other at a portion protruding by bending so that the contact position between the support member and the shock-absorbing rubber member is stabilized. Thereby, in this compressor, the dispersion | variation in the natural vibration characteristic of an accumulator is reduced, and it can make it difficult to produce the dispersion | variation in product sound.

  In the compressor according to the second invention, in the compressor according to the first invention, when the contact surface of the support member is curved so as to protrude toward the buffer rubber member side, the contact surface of the support member Are curved so as to have a curved surface with a radius of curvature of 10 times or more the thickness of the buffer rubber member.

  When the contact surface of the support member is curved so as to protrude toward the shock-absorbing rubber member, if the degree of curvature of the contact surface of the support member is too steep, the shock-absorbing rubber member may be damaged.

  Therefore, in this compressor, the shock-absorbing rubber member is damaged by making the degree of curvature of the contact surface of the support member gentle enough to have a curved surface with a radius of curvature of 10 times or more the thickness of the shock-absorbing rubber member. I try to make it difficult.

  The compressor according to the third aspect of the invention is the compressor according to the first aspect of the invention, wherein when the contact surface of the buffer rubber member is curved so as to protrude toward the support member side, the contact of the buffer rubber member The surface is curved so as to have a curved surface with a radius of curvature that is one or more times the minimum thickness of the buffer rubber member.

  When the contact surface of the buffer rubber member is curved so as to protrude toward the support member side, if the degree of curvature of the contact surface of the buffer rubber member is too steep, the buffer rubber member may be damaged.

  Therefore, in this compressor, the shock-absorbing rubber member is damaged by making the degree of curvature of the contact surface of the shock-absorbing rubber member so gentle that it has a curved surface with a radius of curvature of 1 or more times the minimum thickness of the shock-absorbing rubber member. Is made difficult to occur.

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

  In the first invention, variation in the natural vibration characteristics of the accumulator can be reduced, and variation in product sound can be made difficult to occur.

  In the second and third inventions, it is possible to make it difficult to damage the shock-absorbing rubber member.

It is a schematic front view of the compressor concerning the 1st and 2nd embodiment of the present invention. FIG. 2 is a cross-sectional view taken along the line II in FIG. 1 (however, components in the compressor body and components in the accumulator are not shown). It is the perspective view which looked at the accumulator support structure (however, a shock absorbing rubber member is shown by a two-dot chain line and a fastening band is not shown) shown in FIG. It is a figure which shows the III-III cross section and IV-IV cross section of FIG. It is a figure which shows the accumulator support structure (however, a buffer rubber member is shown with a dashed-two dotted line and a fastening band is not shown) of the compressor concerning 2nd Embodiment of this invention, and is a figure equivalent to FIG. . It is a figure which shows the III-III cross section and IV-IV cross section of FIG.

  Embodiments of a compressor according to the present invention will be described below with reference to the drawings.

<First Embodiment>
(1) Basic Configuration of Compressor FIG. 1 is a schematic front view of a compressor 1 according to the first embodiment of the present invention. 2 is a cross-sectional view taken along the line II in FIG. 1 (however, the components in the compressor body 2 and the components in the accumulator 4 are not shown).

  Here, the compressor 1 is a hermetic compressor used to compress a low-pressure refrigerant in a refrigeration cycle to a high pressure in a vapor compression refrigerant circuit. The compressor 1 mainly includes a compressor body 2, a support member 3, a cylindrical accumulator 4, a shock absorbing rubber member 5, and a fastening band 6.

  The compressor body 2 mainly includes a vertical cylindrical sealed casing 21, a motor (not shown) and a compression element (not shown) accommodated in the sealed casing 21.

  The support member 3 is a metal plate member fixed to the compressor body 2. More specifically, the support member 3 is fixed to the side surface of the compressor body 2, that is, the outer peripheral surface of the cylindrical portion of the sealed casing 21. The support member 3 mainly includes a fixed portion 31, extending portions 32 and 33, contact portions 34 and 35, and folded portions 36 and 37. The fixing portion 31 is a plate-like portion along the outer peripheral surface of the cylindrical portion of the sealed casing 21 and is fixed to the cylindrical portion of the sealed casing 21 by welding or the like. The extending portions 32 and 33 are plate-like portions extending from both ends of the fixed portion 31 toward the accumulator 4 side in a plan view of the compressor 1. The contact portions 34 and 35 are plate-like portions along the outer peripheral surface of the cylindrical portion of the accumulator 4 from the end portions of the extension portions 32 and 33 in the plan view of the compressor 1. The folded portions 36 and 37 are plate-like portions that are folded back from the end portions of the contact portions 34 and 35 toward the compressor body 2 in a plan view of the compressor 1. The first folded portion 36, which is one of the folded portions 36 and 37, is formed with a substantially rectangular square hole 36a. A screw hole 37 a is formed in the second folded portion 37 that is the other of the folded portions 36 and 37.

  The accumulator 4 is a vertical cylindrical container capable of performing gas-liquid separation of a low-pressure refrigerant and refrigeration oil in the refrigeration cycle sucked into the compressor body 2 and temporary storage thereof. Here, the central axis OO of the accumulator 4 faces vertically downward. An outlet pipe 41 connected to the suction port of the compressor body 2 is provided at the lower end of the accumulator 4.

  The buffer rubber member 5 is an annular rubber member that is wound around the outer periphery of the accumulator 4. More specifically, the buffer rubber member 5 is wound around the side surface of the accumulator 4, that is, the outer peripheral surface of the cylindrical portion.

  The fastening band 6 is a metal plate member that presses the accumulator 4 against the support member 3 in a state where the support member 3 and the buffer rubber member 5 are in contact with each other. More specifically, the fastening band 6 has contact surfaces 51, 52 in which contact surfaces 38, 39 which are the surfaces of the contact portions 34, 35 of the support member 3 on the side of the shock-absorbing rubber member 5 are outer peripheral surfaces of the shock-absorbing rubber member 5. The accumulator 4 is pressed against the support member 3 while being in contact with. The fastening band 6 mainly has a band main body portion 61, a locking claw portion 62, and a band fixing portion 63. The band main body 61 is a plate-like portion that is wound around the outer periphery of the shock absorbing rubber member 5 that is wound around the outer periphery of the accumulator 4. The band main body 61 is substantially arc-shaped in a plan view of the compressor 1. The locking claw 62 extends from the end of the band main body 61 facing the first folded portion 36 to the compressor main body 2 side in the plan view of the compressor 1 and then accumulators. It is a plate-like part folded back to the 4 side. The locking claw 62 is locked to the first folded portion 36 by a square hole 36a. The band fixing portion 63 is a plate-like shape that extends along the second folded portion 37 from the end of the support member 3 on the side facing the second folded portion 37 in both ends of the band main body portion 61 in a plan view of the compressor 1. Part. The band fixing portion 63 is formed with a screw hole 63 a that faces the screw hole 37 a of the second folded portion 37. The band fixing portion 63 is fixed to the second folded portion 37 of the support member 3 by screws (not shown) that are screwed into the screw holes 37a and 63a.

  As described above, the compressor 1 has a configuration in which the accumulator 4 is fixed to the support member 3 fixed to the compressor body 2 by the fastening band 6 via the buffer rubber member 5. The support member 3, the shock absorbing rubber member 5, and the fastening band 6 constitute an accumulator support structure for causing the compressor body 2 to support the accumulator 4.

(2) Detailed Configuration of Accumulator Support Structure In the compressor 1 having the basic configuration as described above, the mounting position of the accumulator 4 on the support member 3 is likely to vary due to factors such as dimensional tolerances and mounting accuracy of each member. . As a result, the contact position between the contact surfaces 38 and 39 of the support member 3 and the contact surfaces 51 and 52 of the shock absorbing rubber member 5 is difficult to stabilize, and the natural vibration characteristics of the accumulator 4 vary. Product noise tends to vary. For this reason, it is preferable to reduce variations in the natural vibration characteristics of the accumulator 4 so that variations in product sound of the compressor 1 are less likely to occur.

  Therefore, in this compressor 1, as shown in FIGS. 3 and 4, when the support member 3 and the shock absorbing rubber member 5 are not in contact with each other, the center axis OO of the accumulator 4 is taken as the vertical axis. In the longitudinal cross-sectional view, the contact surfaces 38 and 39 of the support member 3 are curved so as to protrude toward the contact surfaces 51 and 52 of the shock absorbing rubber member 5 that is the other side of contact. Here, FIG. 3 is a perspective view of the accumulator support structure shown in FIG. 1 (however, the buffer rubber member 5 is shown by a two-dot chain line and the fastening band 6 is not shown) viewed from the II direction. FIG. 4 is a view showing a III-III section and an IV-IV section in FIG.

  More specifically, the contact surfaces 38 and 39 of the contact portions 34 and 35 of the support member 3 are buffers on the other side in contact with each other in a longitudinal sectional view when the central axis OO of the accumulator 4 is the vertical axis. The rubber member 5 is curved so as to protrude toward the contact surfaces 51 and 52. The curvatures of the contact surfaces 38 and 39 are uniformly formed in the circumferential direction of the accumulator 4. The curved surfaces of the contact surfaces 38 and 39 are formed by pressing or the like when manufacturing the support member 3. On the other hand, the contact surfaces 51 and 52 of the shock absorbing rubber member 5 are flat surfaces having no irregularities in a longitudinal sectional view when the central axis OO of the accumulator 4 is the vertical axis.

  Here, the degree of curvature of the contact surfaces 38 and 39 of the support member 3 is a curved surface having a radius of curvature R1 that is 10 times or more the thickness t1 of the buffer rubber member 5. Here, the thickness t1 of the buffer rubber member 5 is a thickness in a free state.

(3) Features of the compressor The compressor 1 of the present embodiment has the following features.

(A)
In the compressor 1 according to the present embodiment, the contact surfaces 38 and 39 of the support member 3 are curved so as to protrude toward the contact surfaces 51 and 52 of the shock absorbing rubber member 5 which is the counterpart side.

  For this reason, when the accumulator 4 in a state where the shock absorbing rubber member 5 is wound around the outer periphery by the fastening band 6 is pressed against and fixed to the support member 3, the contact surfaces 51 and 52 come into contact with the portions protruding due to the curvature of the contact surfaces 38 and 39. Will do. At this time, since the accumulator 4 is cylindrical in the longitudinal sectional view and the contact surfaces 38 and 39 are curved so as to protrude toward the contact surfaces 51 and 52 in the longitudinal sectional view, the shock absorbing rubber member 5 is The contact surfaces 38 and 39 of the support member 3 are crushed in a substantially cross shape. That is, it is possible to avoid a state in which the contact surfaces 51 and 52 of the shock absorbing rubber member 5 and the support members 38 and 39 are in point contact.

  As a result, even if the attachment position of the accumulator 4 to the support member 3 varies, the support member 3 and the shock absorbing rubber member 5 reliably come into contact with each other at the portion protruding due to the curve, and the support member 3 and the shock absorbing rubber member 5 The contact position becomes stable. Therefore, in this compressor 1, the variation in the natural vibration characteristics of the accumulator 4 is reduced, and the variation in the product sound can be made difficult to occur.

(B)
If the degree of curvature of the contact surfaces 38 and 39 of the support member 3 is too steep, the shock-absorbing rubber member 5 may be damaged when the shock-absorbing rubber member 5 is crushed at the contact surfaces 38 and 39.

  Therefore, in the compressor 1 of the present embodiment, the degree of curvature of the contact surfaces 38 and 39 of the support member 3 is made gentle enough to have a curved surface with a curvature radius R1 that is 10 times or more the thickness t1 of the buffer rubber member 5. ing. Thereby, damage to the buffer rubber member 5 can be made difficult to occur.

<Second Embodiment>
In the compressor 1 according to the first embodiment, in a vertical cross-sectional view when the central axis OO of the accumulator 4 is the vertical axis in a state where the support member 3 and the shock absorbing rubber member 5 are not in contact, the support member The third contact surfaces 38 and 39 are curved so as to protrude toward the contact surfaces 51 and 52 of the shock-absorbing rubber member 5 which is the other side to be contacted (see FIGS. 3 and 4).

  On the other hand, in the compressor 1 of the present embodiment, as shown in FIGS. 5 and 6, the center axis OO of the accumulator 4 is set in a state where the support member 3 and the shock absorbing rubber member 5 are not in contact. In the longitudinal sectional view when the vertical axis is taken, the contact surfaces 51 and 52 of the shock absorbing rubber member 5 are curved so as to protrude toward the contact surfaces 38 and 39 of the supporting member 3 which is the other side of contact. Yes.

  More specifically, the contact surfaces 51 and 52 of the shock absorbing rubber member 5 are the contact surfaces of the support member 3 that is the other side in contact in the longitudinal sectional view when the central axis OO of the accumulator 4 is the vertical axis. It curves so that it may protrude toward 38,39. The curvatures of the contact surfaces 51 and 52 are uniformly formed in the circumferential direction of the accumulator 4. The curved surfaces of the contact surfaces 51 and 52 are formed when the shock absorbing rubber member 5 is manufactured. On the other hand, the contact surfaces 38 and 39 of the contact portions 34 and 35 of the support member 3 are flat surfaces without unevenness in a longitudinal sectional view when the central axis OO of the accumulator 4 is the vertical axis. .

Here, the degree of curvature of the contact surfaces 51 and 52 of the buffer rubber member 5 has a curved surface with a radius of curvature R2 that is one or more times the minimum thickness t2 of the buffer rubber member 5. Here, the minimum thickness t2 of the buffer rubber member 5 is the minimum thickness in a free state.
In addition, since the structure of another part is the same as that of the compressor 1 of 1st Embodiment, description is abbreviate | omitted here.

  Also in the compressor 1 of this embodiment, when the accumulator 4 in a state in which the shock absorbing rubber member 5 is wound around the outer periphery by the fastening band 6 is pressed against and fixed to the support member 3 as in the first embodiment, the contact surfaces 38 and 39 are fixed. Are in contact with each other at the protruding portion due to the curvature of the contact surfaces 51 and 52. At this time, since the accumulator 4 is cylindrical in the longitudinal sectional view and the contact surfaces 51 and 52 are curved so as to protrude toward the contact surfaces 38 and 39 in the longitudinal sectional view, the shock absorbing rubber member 5 is The contact surfaces 38 and 39 of the support member 3 are crushed in a substantially cross shape. That is, it is possible to avoid a state in which the contact surfaces 51 and 52 of the shock absorbing rubber member 5 and the support members 38 and 39 are in point contact.

  As a result, even if the attachment position of the accumulator 4 to the support member 3 varies, the support member 3 and the shock absorbing rubber member 5 reliably come into contact with each other at the portion protruding due to the curve, and the support member 3 and the shock absorbing rubber member 5 The contact position becomes stable. Therefore, in this compressor 1, the variation in the natural vibration characteristics of the accumulator 4 is reduced, and the variation in the product sound can be made difficult to occur.

  If the degree of curvature of the contact surfaces 51 and 52 of the shock absorbing rubber member 5 is too steep, the shock absorbing rubber member 5 is damaged when the shock absorbing rubber member 5 is crushed at the contact surfaces 38 and 39 of the support member 3. There is a fear.

  Therefore, in the compressor 1 of the present embodiment, the degree of curvature of the contact surfaces 51 and 52 of the shock absorbing rubber member 5 is gentle enough to have a curved surface with a radius of curvature R2 that is equal to or greater than the minimum thickness t2 of the shock absorbing rubber member 5. I'm making things. Thereby, damage to the buffer rubber member 5 can be made difficult to occur.

<Other embodiments>
As mentioned above, although embodiment of this invention was described based on drawing, a specific structure is not restricted to these embodiment, It can change in the range which does not deviate from the summary of invention.

  For example, in the accumulator support structure in the above embodiment, the locking and fixing structure between the fastening band 6 and the support member 3 is not limited to claw locking or screw fixing, but various locking and fixing structures. Is applicable.

  The present invention is widely applicable to a compressor in which an accumulator is fixed to a support member fixed to the compressor body by a fastening band via a buffer rubber member.

DESCRIPTION OF SYMBOLS 1 Compressor 2 Compressor body 3 Support member 4 Accumulator 5 Buffer rubber member 6 Fastening band

Japanese Patent Laid-Open No. 11-13666

Claims (3)

The compressor body (2);
A support member (3) fixed to the compressor body;
A cylindrical accumulator (4);
A shock-absorbing rubber member (5) wound around the outer periphery of the accumulator;
A fastening band (6) for pressing the accumulator against the support member in a state where the support member and the buffer rubber member are in contact with each other;
The contact surface of the support member or the contact surface of the shock-absorbing rubber member is a longitudinal sectional view when the central axis of the accumulator is the vertical axis in a state where the support member and the shock-absorbing rubber member are not in contact with each other. , Curved so as to protrude toward the other side of contact,
Compressor (1).   When the contact surface of the support member (3) is curved so as to protrude toward the buffer rubber member (5), the contact surface of the support member is 10 times the thickness of the buffer rubber member. The compressor (1) according to claim 1, wherein the compressor (1) is curved so as to have a curved surface having the above curvature radius.   When the contact surface of the shock absorbing rubber member (5) is curved so as to protrude toward the support member (3), the contact surface of the shock absorbing rubber member has a minimum thickness of the shock absorbing rubber member. The compressor (1) according to claim 1, wherein the compressor (1) is curved so as to have a curved surface having a radius of curvature of 1 or more.

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