JP2020002820A - Sound insulation structure of compressor, and heat pump device having the same - Google Patents

Abstract

To provide a sound insulation structure of a compressor capable of realizing excellent anti-vibration performance and noise reduction performance by properly restraining an accumulator from being significantly vibrated together with vibration of a compressor by means with a simple constitution.SOLUTION: A sound insulation structure A of a compressor comprises: a compressor 2 and an accumulator 4 provided in parallel to each other; and a soundproof material 6 set to surround peripheries of outer peripheral side faces of the compressor 2 and the accumulator 4. The sound insulation structure A comprises a soundproof material overlaying part 60 at which parts of the soundproof materials 6 are overlaid on each other. The soundproof material overlaying part 60 is set to cover the outer peripheral side face of the accumulator 4, so that the soundproof material 6 is thicker at a portion covering the outer peripheral side face of the compressor 2 than at a portion covering the outer peripheral side face of the accumulator 4.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a soundproof structure of a compressor used as a component of a heat pump device or the like, and a heat pump device having the structure.

The heat pump device incorporates a compressor for a refrigerant, and this compressor generates vibrations when driven to generate noise. In addition, accumulators are connected to the compressor by piping, and these are often arranged side by side close to each other.
Therefore, conventionally, as a means for reducing soundproofing of the compressor, there is a means for wrapping a sheet-like soundproofing material around the outer peripheral side surfaces of the compressor and the accumulator, and enclosing the periphery thereof collectively (for example, Patent Document 1). 2).

  However, there is still room for improvement in the prior art as described below.

  That is, when the compressor is driven and vibrates, the accumulator located at a position offset from the center of the compressor swings (vibrates) about the compressor. In this case, the amplitude of the accumulator tends to be larger than the amplitude of the compressor. In this case, vibration noise generated from the entire compressor and accumulator becomes large, and it is difficult to improve silence. In addition, when the above-described vibration occurs, the vibration propagates to a pipe connected to the compressor or the accumulator, and this pipe may be greatly damaged (stress and strain are generated by repeated vibration). It is desired that such a problem be properly resolved.

Japanese Patent No. 5395136 Japanese Utility Model Application Laid-Open No. 61-14781

  The present invention has been conceived under the circumstances described above, and by means of a simple configuration, the accumulator is appropriately suppressed from vibrating greatly with the vibration of the compressor, and the vibration isolation performance is improved. It is an object of the present invention to provide a soundproof structure of a compressor capable of improving noise reduction performance and a heat pump device having the same.

  In order to solve the above problems, the present invention takes the following technical measures.

  The soundproof structure of the compressor provided by the first aspect of the present invention is set so as to collectively surround the compressor and the accumulator provided side by side and the outer peripheral side of each of the compressor and the accumulator. And a soundproofing material, comprising: a soundproofing structure of a compressor, wherein the soundproofing material includes a soundproofing material overlapping portion in which a part of the soundproofing material is overlapped, and the soundproofing material overlapping portion is an outer peripheral side surface of the accumulator. Is provided so that the portion covering the outer peripheral side surface of the accumulator is thicker than the portion covering the outer peripheral side surface of the compressor.

According to such a configuration, the following effects can be obtained.
First, against the phenomenon that the compressor is driven and the accumulator swings around the compressor, the soundproofing material overlapping portion increases the mass on the accumulator side and serves as a vibration-proof mass that suppresses the vibration of the accumulator. Plays a role. For this reason, the vibration of the accumulator, and thus the vibration of the compressor and the accumulator as a whole, can be suppressed as compared with the related art, and the vibration noise can be reduced. In addition, it is possible to appropriately solve the problem that a large vibration propagates to a pipe connected to a compressor or an accumulator and a large repetitive stress is generated.
Secondly, it is not necessary to use a special member different from the soundproofing material as a means for increasing the mass on the accumulator side and for preventing the vibration, and the soundproofing material overlapping portion is formed using the soundproofing material. ing. Therefore, the manufacturing cost does not increase significantly and the economy is excellent.

  In the present invention, preferably, the soundproofing material overlapping portion is provided in an outer peripheral side surface of the accumulator in a range equal to or more than a half region on a side opposite to the compressor side.

  According to such a configuration, an increase in the mass using the soundproofing material overlapping portion can be efficiently achieved at a position far from the vibration center of the compressor, so that the vibrationproofing property can be further improved. It is possible.

  In the present invention, preferably, the soundproofing material is a flexible sheet including a soundproofing sheet made of rubber or resin, and a sound absorbing material laminated on one surface of the soundproofing sheet.

  According to such a configuration, in addition to being able to suppress vibration and to have an excellent effect of reducing noise caused by vibration, by using a sound insulation sheet having a relatively large specific gravity, the sound insulation material overlapping portion is excellent. It is possible to make the mass large enough so as to exert the vibration damping action.

  The heat pump device provided by the second aspect of the present invention is characterized by including the soundproof structure of the compressor provided by the first aspect of the present invention.

  According to such a configuration, the same effect as that described for the soundproof structure of the compressor provided by the first aspect of the present invention can be obtained.

  Other features and advantages of the present invention will become more apparent from the following description of embodiments of the invention with reference to the accompanying drawings.

1 is an external perspective view illustrating an example of a heat pump device according to the present invention. FIG. 2 is a partially omitted exploded perspective view of the heat pump device shown in FIG. 1. (A) is a main part plan view of a mounting position of a compressor and an accumulator of the heat pump device shown in FIG. 1, (b) is a IIIb-IIIb cross-sectional view of (a), (c) is ( It is IIIc-IIIc sectional drawing of b). FIG. 4 is a plan sectional view of FIG. FIG. 2 is an exploded perspective view of a main part of a mounting location of a compressor and an accumulator of the heat pump device shown in FIG. 1. It is a principal part top view which shows the 1st comparative example with respect to the embodiment shown in FIGS. (A) is a principal part top view which shows the 2nd comparative example with respect to the embodiment shown in FIGS. 1-5, (b) is VIIb-VIIb sectional drawing of (a).

  Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.

The heat pump device HP shown in FIGS. 1 and 2 has a configuration in which equipment forming a refrigeration cycle using CO ₂ or the like as a refrigerant is housed in an outer case 5. The equipment constituting the refrigeration cycle includes an evaporative heat exchanger 1 (evaporator) that absorbs heat from air taken in using a fan 10, a compressor 2, a condensing heat exchanger 3 for heating hot and cold water, and an expansion valve. (Not shown). The condensation heat exchanger 3 is housed in a heat insulating case 30.
The heat pump device HP includes a soundproof structure A of the compressor. In the soundproofing structure A, the compressor 2 and the accumulator 4 provided on the refrigerant suction side are collectively surrounded by the soundproofing material 6, the details of which will be described later.

  The outer case 5 is formed by combining an outer case main body 50 formed in a substantially rectangular parallelepiped with an upper surface opening and having a front panel 50a, and a lid member 51 for closing the upper surface opening of the outer case main body 50. The inside of the outer case 5 is divided into a plurality of first to third regions Ra to Rc by a vertical partition plate 52 and a horizontal partition plate 53, and the fan 10 and the evaporative heat exchanger 1 are provided in the first region Ra. Are provided, and the compressor 2 and the accumulator 4 are provided in the second region Rb. The condensing heat exchanger 3 is disposed in the third region Rc, and a pipe 95 on the discharge side of the compressor 2 is connected to the condensing heat exchanger 3. A pipe 96 into which the refrigerant that has passed through the evaporative heat exchanger 1 flows is connected to the accumulator 4.

  A water inlet 90 and a hot water outlet 91 are provided on a side surface of the outer case 5, and these are connected to the condensation heat exchanger 3 via a pipe 92. The heat pump device HP of the present embodiment is used, for example, as a heat source of a hot water tank type hot water supply device. Hot water supplied from a hot water storage tank (not shown) to the water inlet 90 is sent to the condensation heat exchanger 3. After being heated, it is set so as to reach tap hole 91 and return to the hot water storage tank.

More specifically, the soundproof structure A of the compressor has a configuration as shown in FIGS.
That is, the compressor 2 has a configuration in which a substantially columnar compressor main body 21 is provided on the pedestal 20 in an upright posture, and a driving motor M is mounted on an upper portion thereof. The pedestal portion 20 is mounted on a support plate portion 59 as a bottom wall portion of the outer case 5 and is fixed to the support plate portion 59 using a fastening member 58 such as a bolt or a screw. The accumulator 4 is provided in a side-by-side manner close to the compressor 2 and is supported by the compressor 2 through a connection portion 28. The accumulator 4 is connected to the suction side of the compressor 2 through a short pipe 97. It is connected to the.

  As the soundproofing material 6, a conventionally known material can be used. As shown in a partially enlarged cross-sectional view of FIG. 3B, the sound insulating material 6 in the present embodiment has a sound absorbing material 6b made of a nonwoven fabric laminated on one inner side of a rubber or resin sound insulating sheet 6a. (However, in other drawings, the soundproof material 6 is shown as a single-layer sheet). The nonwoven fabric also includes felt.

  The soundproofing material 6 has a substantially rectangular sheet shape in the unfolded state, but is wound around the outer peripheral side surfaces of the compressor 2 and the accumulator 4, and has a loop shape in a plan sectional view of upper and lower openings enclosing the periphery thereof collectively. (See also FIG. 4).

  Here, in the present embodiment, the soundproofing material 6 is provided with a soundproofing material overlapping portion 60 and a diaphragm connecting portion 61. Hereinafter, these details will be described.

  In FIG. 4, the soundproofing material overlapping portion 60 is a portion where both end portions (corresponding to a part in the present invention) of the soundproofing material 6 are overlapped with each other, and the outer circumferential side surface of the accumulator 4 is different from the compressor 2 side. It is provided in the opposite area.

Preferably, as indicated by reference numeral Sa in FIG. 4, the range in which the soundproofing material overlapping portion 60 is provided is a range of half or more of the outer peripheral side surface of the accumulator 4 on the side opposite to the compressor 2 side. . In other words, the soundproofing material overlapping portion 60 protrudes from the center line CL of the accumulator 4 shown in FIG. CL). The soundproofing material overlapping portion 60 is not provided on the compressor 2 side, and the soundproofing material 6 is thicker on the accumulator 4 side than on the compressor 2 side. With such a configuration, as described later, a vibration suppressing action of the accumulator 4 due to an increase in the mass of the soundproofing material 6 on the accumulator 4 side can be obtained.

  As means for maintaining the soundproofing material 6 in a loop shape surrounding the compressor 2 and the accumulator 4 and appropriately forming and holding the soundproofing material overlapping portion 60, the end of the soundproofing material 6 may be replaced with another soundproofing material 6. What is necessary is just to connect (including joining) to a part. Specifically, it is possible to employ the same means as various connecting means (means using a tying tool or a string, stapling, and the like) described below for the connecting part 61 for drawing.

  The soundproof material 6 is set at a height such that its upper part is located above the compressor 2 and the accumulator 4. The diaphragm connecting part 61 is a part that narrows the upper opening 62 of the soundproof material 6, and is a part where the upper facing parts 63 a and 63 b of the soundproof material 6 are connected to each other by approaching or contacting each other. Preferably, the throttle connecting portion 61 is provided in an upper part of the soundproof material 6 in an intermediate region in the horizontal direction of the compressor 2 and the accumulator 4, more preferably in a substantially central portion.

In the present embodiment, as shown in FIG. 5, a pair of holes 64a and 64b are provided in the upper part of the soundproofing material 6, and a tying member (tie lock) 65 is inserted into these holes 64a and 64b. By doing so, the opposing portions 63a and 63b as peripheral portions of the formation portions of the holes 64a and 64b are connected to each other in a state of approaching or contacting each other. As compared with a portion (see FIG. 4) of the soundproofing material 6 that surrounds the outer peripheral side surfaces of the compressor 2 and the accumulator 4, the upper opening 62 of the soundproofing material 6 has its opening area narrowed down to a considerably small size. (See FIG. 3A). In the drawings, the upper opening 62 is shown in a relatively open state, but in actuality, the opening area can be set to a smaller state or a state close to fully closed.
The binding tool 65 is a general-purpose product similar to that used for binding electrical wiring cords, for example. However, other means can be used as means for connecting the opposing portions 63a and 63b to form the aperture connecting portion 61. For example, means for passing a member such as a string other than the tying tool 65 through a hole provided in the soundproofing material 6, means for using a combination of a string and a string locking tool, stapling, tacking, and joining using a hook-and-loop fastener There are various means such as bonding using an adhesive, means for sandwiching opposed parts of the soundproofing material using a clip, and various means can also be adopted.

  In FIG. 3B, the soundproof material 6 is arranged such that the lower part on the compressor 2 side is placed on the pedestal part 20. Although the lower part of the soundproofing material 6 on the accumulator 4 side protrudes from the pedestal part 20, it is arranged so as to float by an appropriate dimension Lb from the upper surface of the support plate part 59, and is not in contact with the support plate part 59. ing. In addition to narrowing the upper opening 62 of the soundproofing material 6, the diaphragm connecting portion 61 narrows the vicinity of the upper part of the soundproofing material 6 as shown in FIG. The soundproof material 6 is brought into contact with and engaged with the upper portions of the compressor 2 and the accumulator 4 so as to prevent the soundproof material 6 from being displaced downward. This makes it possible to eliminate the problem that the soundproof material 6 comes into contact with the dew water on the support plate portion 59, as described later.

  Next, the operation of the heat pump device HP having the compressor soundproof structure A will be described.

First, FIG. 6 shows a first comparative example of the present embodiment. In the first comparative example, the soundproof material overlapping portion 60 is not provided on the accumulator 4 side of the soundproof material 6. The connection portions 6c at both ends of the soundproof material 6 are provided, for example, on the compressor 2 side. In the first comparative example, since the accumulator 4 is located at an offset from the center of the compressor 2 (substantially corresponding to the center of vibration), the accumulator 4 is affected by the vibration of the compressor 2 and is centered on the compressor 2. Vibration is likely to occur with a large amplitude in the direction of arrow Na.

  On the other hand, according to the present embodiment, as shown in FIG. 4, the soundproofing material overlapping portion 60 is a portion where the mass is increased, and functions as a vibration-proof mass located on the accumulator 4 side. Fulfill. Since the soundproofing material overlapping portion 60 is provided in the outer peripheral side surface of the accumulator 4 in a range equal to or more than a half area on the opposite side to the compressor 2, the effect of the soundproofing material overlapping portion 60 as a vibration-proof mass is reduced. It is possible to increase more. From this, it is possible to reduce the amplitude when the accumulator 4 vibrates in the direction of the arrow Na around the compressor 2 and reduce the overall vibration of the accumulator 4 and the compressor 2. This is preferable in preventing large repetitive stress from being generated in the pipes 95 and 96 connected to the compressor 2 and the accumulator 4 and preventing damage to them.

  The sound-insulating material overlapping portion 60 for obtaining the above-described vibration-proofing function has a configuration in which the ends of the sound-insulating material 6 are merely overlapped at the position on the outer peripheral side surface of the accumulator 4, and no special parts are used. Therefore, it is possible to appropriately avoid such a problem that the manufacturing cost is significantly increased.

  FIG. 7 is a second comparative example. In this second comparative example, the diaphragm connecting portion 61 is not provided above the soundproof material 6. For this reason, in the second comparative example, the upper opening 62 of the soundproofing material 6 is not narrowed but is largely opened. In such a state, the vibration noise of the compressor 2 leaks out of the soundproof material 6 from the upper opening 62, and the vibration noise becomes large.

  On the other hand, according to the present embodiment, as shown in FIG. 3A, the upper opening 62 of the soundproofing material 6 is narrowed to a small opening area. In addition, it becomes difficult for the vibration noise of the compressor 2 to leak out from the upper opening 62 to the outside. Therefore, vibration noise can be reduced. If the upper opening 62 of the soundproof material 6 is closed by another member, the same operation as described above can be obtained, but this increases the component cost and the manufacturing cost. On the other hand, in the present embodiment, since the sound insulating material 6 has a simple configuration in which the aperture connecting portion 61 is provided without using such other members, the manufacturing cost can be reduced. However, it is preferable.

  In the second comparative example, due to the vibration of the compressor 2 or the like, the region of the soundproofing material 6 on the accumulator 4 side protruding from the pedestal portion 20 is displaced downward, and the lower end portion thereof is supported. There is a risk of contacting the upper surface of the plate portion 59. In the heat pump device HP, dew condensation water may be generated inside the heat pump device HP, and the dew condensation water may flow on the support plate 59. Therefore, in the second comparative example, the soundproofing material 6 comes into contact with the dew condensation water, and as a result, the accumulator 4 and the compressor 2 may get wet with the dew condensation water.

On the other hand, according to the present embodiment, as shown in FIG. 3C, the upper part of the soundproofing material 6 is narrowed to a narrow shape, and the upper part of the soundproofing material 6 is located above the compressor 2 and the accumulator 4. As a result, the soundproof material 6 is appropriately prevented from being displaced downward relative to the compressor 2 and the accumulator 4. As a result, unlike the second comparative example, there is no possibility that a part of the soundproof material 6 descends and comes into contact with the dew water on the support plate portion 59.
In the present embodiment, as described above, the soundproofing material overlapping portion 60 is provided on the accumulator 4 side of the soundproofing material 6 and the mass of this portion is large. Although the portion is likely to be displaced downward, such a danger can be appropriately avoided by the presence of the throttle connection portion 61.

  The present invention is not limited to the contents of the above-described embodiment. The soundproof structure of the compressor according to the present invention and the specific configuration of each part of the heat pump device can be variously modified within a range intended by the present invention.

  In the above-described embodiment, the soundproofing material overlapping portion 60 is provided in the outer peripheral side surface of the accumulator 4 in a range equal to or more than a half region on the opposite side to the compressor 2, but the present invention is not limited to this. The soundproofing material overlapping portion 60 may be provided in a range narrower than the range described above.

The soundproofing material is preferably a multi-layered structure in which a rubber or resin sound insulating sheet and a sound absorbing material are laminated, but is not limited thereto. It is also possible to use a layer sheet structure or the like.
In the present invention, it is not an essential requirement that the soundproof material 6 be provided with the diaphragm connecting portion 61, and a configuration in which the diaphragm connecting portion 61 is omitted can be adopted.

  The soundproof structure of the compressor according to the present invention is not limited to the heat pump device, but can be applied to devices other than the heat pump device. The heat pump device is not limited to heating for hot and cold water, but includes, for example, for air conditioning (for air conditioners).

A soundproof structure of compressor HP heat pump device 2 compressor 4 accumulator 6 soundproof material 60 soundproof material overlapping part

Claims (4)

A compressor and an accumulator provided side by side,
A soundproofing material set so as to enclose the outer peripheral side surfaces of these compressors and accumulators collectively;
The soundproof structure of the compressor, comprising:
The soundproofing material has a soundproofing material overlapping portion where parts of the soundproofing material are overlapped with each other,
The soundproofing material overlapping portion is provided so as to cover the outer peripheral side surface of the accumulator, so that the portion covering the outer peripheral side surface of the accumulator is thicker than the portion covering the outer peripheral side surface of the compressor. The soundproof structure of the compressor. It is a soundproof structure of the compressor according to claim 1,
The soundproofing structure of a compressor, wherein the soundproofing material overlapping portion is provided in an outer peripheral side surface of the accumulator in a range equal to or more than a half area on a side opposite to the compressor side. It is a soundproof structure of the compressor according to claim 1 or 2,
The soundproofing structure of a compressor, wherein the soundproofing material is a flexible sheet including a rubber or resinous sound insulating sheet and a sound absorbing material laminated on one surface of the sound insulating sheet.   A heat pump device comprising the soundproof structure of the compressor according to any one of claims 1 to 3.

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