JPH10185362A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a large number of loops formed in a suction pipe and a discharge pipe, to increase the length of the pipe, to increase the flow resistance of the refrigerant, to increase the piping space, and to increase the size of the apparatus. There was a problem. SOLUTION: An outdoor unit main body, a compressor 1 provided in the main body and compressing and discharging the sucked refrigerant to generate vibration,
A refrigerant pipe (suction pipe 4 and discharge pipe), which is connected to the compressor 1 and in which the refrigerant is sucked or discharged, and a thin pipe provided in the refrigerant pipe, are connected in parallel, and vibrate to suppress transmission of vibration to the main body. Transmission suppressing means (first suction pipe 4a,
And a second suction pipe 4b).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner, and more particularly to a refrigerant pipe used for an outdoor unit.

[0002]

[Prior art]

Conventional example 1. FIG. 4 is a refrigerant circuit diagram of a general air conditioner. In the figure, 1 is a compressor that compresses low-temperature and low-pressure refrigerant and discharges high-temperature and high-pressure refrigerant, 3 is a four-way valve that switches the flow of the refrigerant, 4 is a suction pipe provided on the suction side of the compressor 1, 5 is an accumulator provided on the suction side of the compressor 1, 6 is a discharge pipe provided on the discharge side of the compressor 1, 14
Is a stop valve, 15 is an indoor heat exchanger, 16 is an outdoor heat exchanger, 17 is a throttle, 18 is a check valve, and 19 is a strainer.

[0003] A connecting pipe between the compressor 1 and the indoor heat exchanger 15 and the outdoor heat exchanger 16, ie, a suction pipe 4 to the compressor and a discharge pipe 6 from the compressor 1, are connected to the compressor 1
A vibration absorber (not shown) is provided in order to prevent the vibrations from being transmitted to each heat exchanger 16.

An example will be described. FIG. 5 is a perspective view showing a piping structure of a conventional air conditioner disclosed in, for example, Japanese Utility Model Laid-Open Publication No. 61-54163. In the figure, the pipe is constituted by a bare pipe made of soft phosphorus deoxidized copper, and is designed so that vibration absorption is performed by a large number of loop-shaped pipes. The compressor 1 is elastically supported by a body of the air conditioner or a substrate of the air conditioner via a vibration isolator, and a four-way valve 3 is disposed above the compressor. An accumulator 5 is connected in the middle of a suction pipe 4 connecting the four-way valve 3 and the compressor 1, and the four-way valve 3 and the compressor 1 are connected by a discharge pipe 6. Each of these tubes is bent in a loop around the compressor 1.

Next, the operation will be described. When the compressor 1 is driven to compress and discharge the refrigerant, vibration is generated from the compressor 1, and this vibration is transmitted through the suction pipe 4 and the discharge pipe 6, passes through the four-way valve 3, and becomes indoors. The heat reaches the heat exchanger 15 and the outdoor heat exchanger 16, but since the suction pipe 4 and the discharge pipe 6 are bent in a loop around the compressor 1, a vibration-proofing action is performed, and the vibration gradually increases. Attenuated.

Conventional example 2. Further, in another conventional air conditioner, a rubber-based damping material 7 as shown in FIGS. 6 and 7 is attached in order to dampen the vibration of the piping. The vibration damping method is a method in which the mass of the vibration damping material 7 is attached to a pipe, in this case, the suction pipe 4, and the resonance frequency of the pipe is lowered to thereby dampen the pipe.

[0007]

The conventional air conditioner is
With the configuration described above, in the conventional example 1, the loop formed in the suction pipe 4 and the discharge pipe 6 increases,
There is a problem that not only the flow resistance of the refrigerant increases due to an increase in the length of the pipe, but also the space for the pipe increases and the size of the apparatus increases.

In the second conventional example, the mass of the vibration damping material is added to the pipe to reduce the resonance frequency of the pipe, thereby damping the vibration. There was a problem that the pipe stress at one stop was increased.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide an air conditioner capable of reducing the vibration transmitting force from a compressor to a heat exchanger and reducing the size of the apparatus. With the goal.

[0010]

An air conditioner according to a first aspect of the present invention includes an outdoor unit main body, and a compressor provided in the main body, which compresses and discharges the sucked refrigerant to generate vibration. A refrigerant pipe connected to the compressor, through which the refrigerant is sucked or discharged, and a vibration transmission suppressing means provided in the refrigerant pipe, the thin pipes being connected in parallel, and suppressing transmission of vibration to the main body. is there.

According to a second aspect of the present invention, in the air conditioner according to the first aspect, the vibration transmission suppressing means is configured by connecting thin pipes having different lengths in parallel.

An air conditioner according to a third aspect of the present invention is the air conditioner according to the first aspect, wherein the member having elasticity for damping the pipes between the thin pipes connected in parallel of the vibration transmission suppressing means. Is provided.

An air conditioner according to a fourth aspect of the present invention is connected to the outdoor unit main body, a compressor provided on the main body, compressing and discharging the sucked refrigerant to generate vibration, and a compressor. The refrigerant pipe includes a refrigerant pipe through which the refrigerant is sucked or discharged, and damping means provided on the refrigerant pipe and damping the refrigerant pipe by friction generated between the refrigerant pipe and the refrigerant pipe.

The air conditioner according to a fifth aspect of the present invention is the air conditioner according to the fourth aspect, wherein the vibration damping means is provided so as to connect adjacent refrigerant pipes.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing refrigerant pipes around a compressor of an outdoor unit of an air conditioner according to Embodiment 1 of the present invention. As shown in the figure, a compressor 1 is elastically supported on an air conditioner main body or a substrate (not shown) of the air conditioner via a vibration isolating material 2, and a four-way valve 3 is disposed diagonally above the compressor. ing. The four-way valve 3 and the compressor 1 are connected by a discharge pipe which is a refrigerant pipe (not shown), and an accumulator 5 is connected in the middle of a suction pipe 4 which is a refrigerant pipe connecting the four-way valve 3 and the compressor 1. I have. Further, the four-way valve 3 and each heat exchanger (not shown) are connected by a suction pipe 8 and a discharge pipe 9.

The suction pipe 4 connecting the accumulator 5 and the four-way valve 3 is divided into two parallel pipes which are two vibration transmission suppressing means of a first suction pipe 4a and a second suction pipe 4b. I have. The pipe diameters of the two first suction pipes 4a and the second suction pipe 4b, which are the vibration transmission suppressing means, are smaller than the suction pipe 4.

Next, the operation will be described. In FIG. 1, the vibration from the compressor 1 is transmitted through the accumulator 5, the first suction pipe 4a and the second suction pipe 4b, and the suction pipe 4, and is transmitted to the four-way valve 3 and each heat exchanger. However, the vibration transmitted to each heat exchanger causes the suction pipe to be connected to the first suction pipe 4.
a and the second suction pipe 4b in a parallel pipe,
Since the size of the piping system can be reduced, the spring constant can be softened. Therefore, the vibration constant is considerably smaller than the vibration generated in the compressor 1. Therefore, the vibration of the outdoor unit of the air conditioner is significantly reduced as compared with the conventional outdoor unit not using the parallel pipe as shown in FIG.

Further, since the vibration transmitting force is greatly reduced, the length of the refrigerant pipe can be reduced, and the space for disposing the refrigerant pipe can be reduced, so that the unit can be downsized. .

As shown in FIG. 1, the first suction pipe 4a and the second suction pipe 4b have different lengths, and the first suction pipe 4a is longer in FIG.
When a configuration in which a parallel pipe of the first suction pipe 4a and the second suction pipe 4b is used in the middle of the suction pipe 4, the vibration transmission force from the compressor 1 to each heat exchanger is greatly increased as described above. However, when the length and shape of the first suction pipe 4a and the second suction pipe 4b are the same, the resonance frequency may be the same. Therefore, the first suction pipe 4a
By changing the length of the second suction pipe 4b and the
Resonance of the suction pipe 4a and the second suction pipe 4b can be prevented.

Embodiment 2 Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. FIG. 2 is a diagram showing a refrigerant pipe around an compressor of an outdoor unit of an air conditioner according to Embodiment 2 of the present invention, and is an enlarged view of the same main part. As shown in the figure, the first
Is connected by a material 20 having elasticity, which is a member having elasticity, between the suction pipe 4a and the second suction pipe 4b.

When the first suction pipe 4a and the second suction pipe 4b are used in the middle of the suction pipe 4, the vibration transmitting force from the compressor 1 to each heat exchanger is greatly reduced as described above. However, by connecting the first suction pipe 4a and the second suction pipe 4b with a material 20 having a spring property, the first suction pipe 4a and the second suction pipe 4b are controlled from each other. It can be vibrated, and the vibration can be further reduced as compared with the first embodiment.

Embodiment 3 FIG. Hereinafter, a third embodiment of the present invention will be described with reference to the drawings. FIG. 3 is a diagram showing a refrigerant pipe around an compressor of an outdoor unit of an air conditioner according to Embodiment 3 of the present invention, and is an enlarged view of the same main part. In the figure, a compressor 1
Is elastically supported by an air conditioner main body or a substrate (not shown) of the air conditioner via a vibration isolator 2, and a four-way valve 3 is disposed diagonally above the air conditioner. The four-way valve 3 and the compressor 1
Is connected by a discharge pipe (not shown), and an accumulator 5 is connected in the middle of a suction pipe 4 connecting the four-way valve 3 and the compressor 1. The suction pipe 4 is provided with a vibration damping material 7 which is a rubber material damping means. As shown in FIG. 3B, the shape of the damping material 7 has a round hole penetrating the pipe on one side, and a shape sandwiching the pipe on the other side, as shown in FIG.
Alternatively, as shown in FIG. 3C, one has a round hole penetrating the pipe, and the other has a pipe penetrating portion in the shape of a long hole.

Next, the operation will be described. When the suction pipe 4 resonates due to the vibration from the compressor 1, the vibration damping material 7 and the suction pipe are not used in the conventional method of lowering the resonance frequency by adding the mass of the damping material to the pipe as shown in FIGS. Because it is a method of damping the pipe by friction generated between it and
The damping material 7 can be lightened. Therefore, the cost can be reduced, and the piping stress at the time of stop can be reduced. In the above-described third embodiment, the damping material 7 is used between the adjacent suction pipes 4. However, the same effect can be obtained with any of the pipes.

In the above-described first to third embodiments, the unit having the four-way valve 3 has been described. However, a unit having no four-way valve 3 can obtain the same effect.

In the first to third embodiments, the suction pipe 4 has been described. However, it goes without saying that the same can be applied to the discharge pipe.

[0026]

The air conditioner according to the first aspect of the present invention
An outdoor unit main body, a compressor provided in the main body, which compresses and discharges the sucked refrigerant and generates vibration, a refrigerant pipe connected to the compressor and through which the refrigerant is sucked or discharged, and a refrigerant pipe provided in the main body. The thin pipes are connected in parallel and have a vibration transmission suppressing means for suppressing transmission of vibration to the main body, so that the spring constant of the refrigerant pipe is softened to reduce the vibration transmitted from the compressor to the main body. can do. Therefore, the vibration of the outdoor unit for the air conditioner is greatly reduced, the length of the refrigerant pipe can be shortened, and the space for disposing the refrigerant pipe can be reduced, so that the outdoor unit can be downsized. .

In the air conditioner according to the second aspect of the present invention, the vibration transmission suppressing means is configured by connecting thin pipes having different lengths in parallel, so that resonance can be prevented.

In the air conditioner according to the third aspect of the present invention, an elastic member for damping the pipes is provided between the thin pipes connected in parallel to the vibration transmission suppressing means. And a further effect of vibration reduction can be obtained.

The air conditioner according to the invention of claim 4 is connected to the outdoor unit main body, a compressor provided on the main body, compressing and discharging the sucked refrigerant to generate vibration, and Since the refrigerant pipe is provided with the refrigerant pipe through which the refrigerant is sucked or discharged, and the vibration control means for damping the refrigerant pipe by friction generated between the refrigerant pipe and the refrigerant pipe,
Since the vibration damping means can be made light, the cost can be reduced, and the piping stress at the time of stop can be reduced.

[Brief description of the drawings]

FIG. 1 is a diagram showing refrigerant pipes around a compressor of an outdoor unit of an air conditioner according to Embodiment 1 of the present invention.

FIG. 2 is a diagram showing a refrigerant pipe around an compressor of an outdoor unit of an air conditioner according to Embodiment 2 of the present invention, and is an enlarged view of the same main part.

FIG. 3 is a diagram showing a refrigerant pipe around an compressor of an outdoor unit of an air conditioner according to Embodiment 3 of the present invention, and is an enlarged view of the same main part.

FIG. 4 is a refrigerant circuit diagram of a conventional air conditioner.

FIG. 5 is a perspective view of a conventional air conditioner.

FIG. 6 is an enlarged view of a main part and a view showing a refrigerant pipe around a compressor of an outdoor unit of another conventional air conditioner.

FIG. 7 is an enlarged view of the same main part as a diagram showing a refrigerant pipe around a compressor of an outdoor unit of another conventional air conditioner.

[Explanation of symbols]

1 compressor, 2 vibration isolator, 3 four-way valve, 4 suction pipe,
4a first suction pipe, 4b second suction pipe, 5 accumulator, 6 discharge pipe, 7 damping material, 8 suction pipe, 9 discharge pipe, 14 stop valve, 15 indoor heat exchanger, 16 outdoor heat exchanger, 17 Restrictor, 18 Check valve, 19 Strainer, 20 Springy material.

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Yasuo Nakada 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Inside Mitsubishi Electric Corporation

Claims (5)

[Claims] 1. An outdoor unit main body, and a refrigerant provided in the main body and compressed and discharged from the main body,
A compressor that generates vibration, a refrigerant pipe that is connected to the compressor, and that sucks or discharges the refrigerant, is provided in the refrigerant pipe, and a thin pipe is connected in parallel;
An air conditioner comprising: a vibration transmission suppressing unit configured to suppress transmission of the vibration to the main body. 2. The air conditioner according to claim 1, wherein said vibration transmission suppressing means is configured by connecting thin pipes having different lengths in parallel. 3. The air conditioner according to claim 1, wherein a member having elasticity for damping the pipes is provided between the thin pipes connected in parallel of the vibration transmission suppressing means. 4. An outdoor unit main body, and a refrigerant provided in the main body and compressed and discharged from the main body,
A compressor that generates vibration; a refrigerant pipe connected to the compressor, through which the refrigerant is sucked or discharged; and a refrigerant pipe that is provided in the refrigerant pipe and damps the refrigerant pipe by friction generated between the refrigerant pipe and the refrigerant pipe. An air conditioner comprising: 5. The air conditioner according to claim 4, wherein the vibration damping means is provided so as to connect the adjacent refrigerant pipes.