JP7119702B2 - Anti-vibration material and heat pump unit - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration isolator and a heat pump unit, and more particularly to a vibration isolator attached to pipes for vibration isolation, and a heat pump unit having the vibration isolator attached to the pipe.

In order to reduce the vibration and noise of the pipes inside the equipment, the technique of attaching a rubber plate anti-vibration material to the pipes is widely adopted.
In the sound and vibration damper transferred to Patent Document 1, a fiber separator is attached to the outer surface of a rubber tape-like damper having a predetermined thickness, and the damper is wrapped around the outer surface of a pipe and extended sideways. , a tear portion extending in the length direction of the pipe is formed in the separator at the curved portion wound around the outer surface of the pipe, and tension of the separator is relieved via the tear portion.

In the cooling system described in Patent Document 2, a vibration isolating rubber having a synthetic resin film attached to the outer surface is attached to the pipe extending from the compressor, and the vibration isolating rubber and the film have a curved portion wound around the outer surface of the pipe, and this curved portion. The synthetic resin film has a cut at the boundary between the curved portion and the straight portion in order to increase the adhesiveness of the anti-vibration rubber in the straight portion.

In the anti-vibration sheet described in Patent Document 3, a pair of rectangular notches symmetrical with respect to the center line are formed in the upper end portion of a rectangular sheet made of a butyl rubber plate, and the sheet is bent at the center line. By sandwiching two pipes and overlapping a pair of rectangular cutouts between the two pipes and adhering the sides of the rectangular cutouts facing each other, the winding performance around the pipes is enhanced. .

Japanese Utility Model Laid-Open No. 61-16480 Japanese Patent No. 3-7864 Japanese Patent No. 6028662

In the sound and vibration damper disclosed in Patent Document 1, the thick damper itself does not have a notch or the like, but a tearing portion is formed only in the fibrous separator. The bendability (flexibility) of the portion where the dampers are attached cannot be sufficiently enhanced, and the bonded portions of the dampers tend to peel off gradually, which poses a problem in terms of durability.

In the anti-vibration rubber and film of Patent Document 2, cuts are not formed in the thick damper itself, but cuts are formed only in the synthetic resin film on the outer surface of the anti-vibration rubber. Since the bendability of the curved portion of the vibration-isolating rubber cannot be sufficiently enhanced as in the above, the bonded portions of the vibration-isolating rubbers tend to peel off gradually, which poses a problem in terms of durability.

In the anti-vibration sheet of Patent Document 3, it is disclosed that a broken line-shaped cut or recess is formed in the center line portion. is difficult to raise sufficiently. That is, when there is a film material on the outer surface of the anti-vibration sheet, the film material may exhibit resistance.

9 and 10 show a state in which conventional vibration-isolating materials 100 and 101 of the applicant of the present application are attached to pipes, and the vibration-isolating materials 100 and 101 are attached to the piping via the adhesive on the inner surfaces of the vibration-isolating materials 100 and 101. installed on. However, as time elapses, due to the elastic restoring force of the vibration-isolating material 100, peeling progresses like the edge 100a of the vibration-isolating material 100 shown in FIG. When the vibration isolator 101 is attached to the top of the U-shaped pipe 102 as shown in FIG. 10, the vibration isolator 101 peels off due to the elastic restoring force of the vibration isolator 101 as time elapses.

An object of the present invention is to provide a vibration-damping material having a rubber plate portion, a film attached to one surface of the rubber plate portion, and an adhesive layer on the other surface thereof. and to provide a heat pump unit in which the vibration isolator is attached to a pipe.

A vibration isolator according to claim 1 is a vibration isolator that prevents vibration of a pipe by being attached to the pipe, and the vibration isolator is attached to a rubber plate portion and one surface of the rubber plate portion. A film and an adhesive layer are provided on the other surface of the rubber plate portion, and at least one notch portion is formed in the vibration-damping material to reach an intermediate portion in the thickness direction of the rubber plate portion from the film side. The vibration-isolating material is formed in a rectangular plate shape in a plan view, and the cut portion includes a longitudinal cut portion formed parallel to the longitudinal direction of the vibration-isolating material, and a crossing section formed parallel to the transverse direction,
The end portions of the vertical cut portion and the horizontal cut portion are characterized in that they are not formed near the end portion of the vibration-damping material .

According to the above configuration, since about half of the thickness of the film and the rubber plate portion of the vibration-damping material is divided by at least one cut portion, flexibility when bending the cut portion toward the outer surface is increased. The elastic restoring force is reduced, and the anti-separation performance is improved when the anti-vibration material is attached to the pipe. Moreover, since the vibration-isolating material is divided by only about half the thickness of the vibration-isolating material at the notch, the integrity and durability of the vibration-isolating material can be ensured.

Then, the vibration-isolating material can be attached to the pipe in such a manner that the vertical cut portion is aligned with the pipe, or the vibration-isolating material is attached to the pipe in such a manner that the horizontal cut portion is aligned with the pipe.

Moreover, since the ends of the vertical cuts and the horizontal cuts are not formed near the ends of the vibration-damping material, the distance from the ends of the vertical cuts and the horizontal cuts to the end of the vibration-damping material is low. Durability can be ensured without occurrence of breakage leading to

The vibration isolator according to claim 2 is the vibration isolator according to the invention of claim 1 , wherein the vibration isolator comprises a pair of longitudinal cuts formed at a portion near one end and a portion near the other end in the width direction, and a pair of and a pair of transverse incisions extending from the central portion in the longitudinal direction of the longitudinal incision toward the central portion in the lateral direction, the pair of transverse incisions being spaced apart by a predetermined distance. It is characterized by being discontinuously formed.

According to the above configuration, by bending the pair of longitudinal cuts along the two parallel pipes, the two pipes can be damped. Alternatively, the U-shaped pipe can be damped by bending a pair of transverse cuts and bending a pair of vertical cuts aligned with the top of the U-shaped pipe.
Moreover, since the pair of transverse cuts are discontinuously formed with a predetermined gap therebetween, the continuity of the portion between the pair of transverse cuts can be ensured.

A heat pump unit according to claim 3 is a heat pump unit in which a compressor, a condensing heat exchanger, an expansion means, and an evaporative heat exchanger are connected by a refrigerant circuit, wherein at least one of the internal pipes of the heat pump unit is connected to the heat pump unit according to claim 3. It is characterized by attaching 1 or 2 anti- vibration materials.
According to the above configuration, the vibration of the piping when the compressor of the heat pump unit operates can be effectively damped by the damping material.

As described above, the present invention has various effects.

1 is a front view of a heat pump unit according to an embodiment of the invention; FIG. It is a rear view of a heat pump unit. It is a perspective view of a heat pump unit. It is a top view of a vibration-proof material. It is a side view of a vibration isolator. 5 is an enlarged cross-sectional view taken along the line VI-VI of FIG. 4; FIG. It is a perspective view which shows the state which attached the vibration-proof material to two piping. It is a perspective view which shows the state which attached the vibration-proof material to U-shaped piping. It is a perspective view which shows the state which attached the conventional vibration-proof material to piping. It is a perspective view which shows the state which attached the conventional vibration-proof material to U-shaped piping.

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment in which a vibration isolator according to the present invention is attached to piping of a heat pump unit will be described below with reference to the drawings.
First, the heat pump unit 1 will be explained.
The heat pump unit 1 shown in FIGS. 1 to 3 is in a state where the exterior case is removed, and the heat pump unit 1 includes a compressor 2, a condensing heat exchanger 3, an expansion valve 4, and an evaporative heat exchanger. 5 are connected by a refrigerant circuit.

A blower fan 6 and an electric motor 7 of an evaporative heat exchanger 5 are arranged at the center of the front surface of the heat pump unit 1, and the evaporative heat exchanger 5 is formed in an L-shape in plan view extending over the rear and left side portions of the heat pump unit 1, and condenses. The heat exchanger 3 is arranged on the top surface, and the compressor 2, the expansion valve 4, and the pipes are arranged in the equipment housing section on the right side.

Vibration of the compressor 2 propagates to the refrigerant pipe 8 (hereinafter referred to as pipe) connected to the compressor 2 and to the pipes 8 around it, causing them to vibrate and become noise sources.
Therefore, as shown in FIGS. 2 and 3, a first vibration isolator 10A is attached to the two parallel pipes 8 that are likely to vibrate, and the U-shaped pipe 8a of the pipes 8 is provided with a second vibration damper 10A. Vibration isolator 10B is attached. Since the first and second vibration-damping members 10A and 10B have the same structure before being attached to the pipe 8, the vibration-damping member 10 will be described.

As shown in FIGS. 4 to 6, the vibration isolator 10 is a vibration isolator that prevents vibration of the pipe 8 by being attached to the pipe 8. The vibration isolator 10 has a rectangular plate shape in plan view. is formed in The length of the long side of the vibration isolator 10 is, for example, 160 mm, and the length of the short side is, for example, 80 mm. The size of the vibration isolator 10 may be of one type, or may be of a plurality of types.

The vibration isolator 10 comprises a rubber plate portion 11 made of butyl rubber and having a thickness of about 3 mm, a synthetic resin film 12 attached to one surface of the rubber plate portion 11, and an adhesive layer 15 on the other surface. ing. The vibration isolator 10 is formed with a plurality of cuts 13 and 14 extending from the film 12 side to the middle portion of the rubber plate portion 11 in the thickness direction (see FIG. 6). In general, butyl rubber itself has adhesiveness, and when the vibration isolator 10 made of butyl rubber has sufficient adhesiveness, one surface of the vibration isolator 10 is an adhesive layer. 15 may also be employed.

As shown in FIG. 4, the vibration-damping material 10 is formed in a portion near one end (a portion near the left end in FIG. 4) and a portion near the other end (a portion near the right end in FIG. 4) in the lateral direction (horizontal direction in FIG. 4). A pair of longitudinal cuts 13 and a pair of transverse cuts 14 extending from the longitudinal center of the pair of longitudinal cuts 13 toward the transverse center of the pair of longitudinal cuts 13, and the pair of transverse cuts The portions 14 are discontinuously formed with a predetermined interval (for example, 15 mm) therebetween.

The ends of the longitudinal cuts 13 and the transverse cuts 14 are not formed near the ends of the vibration-damping material 10 . In other words, a plurality of notches 13 and 14 are formed inside a rectangular region recessed inward by a predetermined width (for example, 20 mm) from the contour line of the vibration isolator 10 .
That is, when the cut portions 13 and 14 extend to the vicinity of the end portion of the vibration-isolating material 10, the fracture progresses from the cut portions 13 and 14 toward the end portion of the vibration-isolating material 10, and the integrity of the vibration-isolating material 10 is impaired. because it is

As shown in FIGS. 2 and 7, in the case of the first vibration isolator 10A, after peeling off the film protecting the adhesive layer 15, the pair of vertical cuts 13 of the vibration isolator 10 is cut into two lines. 4 are wound around the outer surfaces of the two pipes 8, respectively, and attached to the pipes 8 via the adhesive layer 15.
In this first vibration-isolating material 10A, the vertical cuts 13 reduce the elastic restoring force of the bent portion of the vibration-isolating material 10 or the vicinity thereof, and the flexibility increases, so that the state shown in FIG. Separation of the left end portion and the right end portion of the vibration isolator 10 is less likely to occur even after the passage of time.

As shown in FIGS. 3 and 8, in the case of the second vibration-damping material 10B, after peeling off the film protecting the adhesive layer 15, the two cross-cutting portions 14 are bent and folded in two. Then, the U-shaped pipe 8a of the pipe 8 is sandwiched between the vibration-isolating materials 10 folded in two, the vertical cut portion 13 is positioned near the outer surface of the pipe 8, and the vibration-isolating materials 10 folded in two are attached to each other by an adhesive layer 15. stick through.
In this second vibration isolator 10B, the elastic restoring force of the bending portion of the vibration isolator 10 is reduced by the two laterally inserted portions 13, and the flexibility is increased. Detachment does not progress over time.

Next, the functions and effects of the vibration-damping material described above will be described.
About half of the thickness of the film 12 and the rubber plate portion 11 of the vibration isolator 10 is divided by the plurality of cut portions 13 and 14, so that the flexibility when bending the cut portions 13 and 14 on the outer surface side is improved. As a result, the elastic restoring force is lowered, and the anti-separation performance when the vibration-damping material is attached to the pipe 8 is improved. Moreover, since the cuts 13 and 14 divide only about half the thickness of the vibration-isolating material, the integrity and durability of the vibration-isolating material 10 can be ensured.

Since the vibration isolator 10 has a pair of vertical cuts 13 and a pair of transverse cuts 14, the vibration isolator 10 can be attached to the pipe 8 or transversely cut in such a manner that the vertical cuts 13 are aligned with the pipe. The vibration isolator 10 can be attached to the pipe 8 in such a manner that the portion 14 runs along the pipe 8 .

Moreover, since the ends of the longitudinal cuts 13 and the transverse cuts 14 are not formed near the ends of the vibration-damping material 10 , the vibration-damping material 10 is separated from the ends of the vertical cuts 13 and the transverse cuts 14 . Durability can be ensured without causing breakage to the ends.

By bending the vicinity of the pair of vertical cuts 13 along the two parallel pipes 8, the two pipes 8 can be damped. Alternatively, the U-shaped pipe 8a can be damped by bending the pair of transverse cuts 14 and the pair of vertical cuts 13 aligned with the top of the U-shaped pipe 8a.
Moreover, since the pair of transverse cuts 14 are discontinuously formed with a predetermined gap therebetween, the continuity of the portion between the pair of transverse cuts 14 can be ensured. can.

Next, an example in which the above embodiment is partially modified will be described.
1) Although two vertical cuts 13 are formed in the vibration-damping material, three or more vertical cuts 13 are formed.
may be formed. Similarly, although two transverse cuts 14 are formed, three or more transverse cuts 14 may be formed.
2) In addition, those skilled in the art can partially modify the above embodiment without departing from the scope of the present invention, and the present invention includes such modifications.

1 Heat pump unit 2 Compressor 3 Condensing heat exchanger 4 Expansion valve 5 Evaporative heat exchanger 8 Piping 10 Anti-vibration material 10A First anti-vibration material 10B Second anti-vibration material 11 Rubber plate portion 12 Film 13 Vertical cut portion 14 Transverse portion 15 Adhesive layer

Claims (3)

A vibration-damping material that prevents vibration of the pipe by being attached to the pipe,
The anti-vibration material includes a rubber plate portion, a film attached to one surface of the rubber plate portion, and an adhesive layer on the other surface of the rubber plate portion,
At least one notch extending from the film side to an intermediate portion in the thickness direction of the rubber plate portion is formed in the vibration-damping material ,
The vibration-isolating material is formed in a rectangular plate shape in a plan view, and the cut portions include a vertical cut portion formed parallel to the longitudinal direction of the vibration-isolating material and a longitudinal cut portion formed parallel to the longitudinal direction of the vibration-isolating material. and a transverse indentation formed parallel to the
The vibration isolator, wherein the ends of the longitudinal cut and the transverse cut are not formed near the ends of the vibration isolator. The vibration-damping material includes a pair of vertical cuts formed near one end in the widthwise direction and a region near the other end of the widthwise direction, and a central portion in the longitudinal direction of the pair of vertical cuts and a central portion in the widthwise direction. a pair of transverse cuts extending sideways,
2. The vibration-damping material according to claim 1 , wherein said pair of lateral cuts are discontinuously formed with a predetermined gap therebetween . In a heat pump unit in which a compressor, a condensing heat exchanger, an expansion means, and an evaporative heat exchanger are connected by a refrigerant circuit,
A heat pump unit, wherein the vibration isolator according to claim 1 or 2 is attached to at least one of the pipes of said heat pump unit.

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