JP2001295764A - Compressor for refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simultaneously secure the silent operating property of a compressor for a refrigerator and reduce the manufacturing cost of the compressor. SOLUTION: In the compressor for a refrigerator, a compressed gaseous refrigerant is supplied to a refrigerant circulating system via a refrigerant pipe 18 from a delivery pipe 16 mounted through the chamber wall 11a of a delivery chamber 11. A silencer 17 is provided in the upstream section 16a of the delivery pipe 16 located within the delivery chamber 11, so that the action of the silencer 17 to absorb pulsation of the gas discharged and the resulting action to inhibit noises caused by vibrations are effected on the side of the compressor 1. Therefore, the effect of inhibiting transmission of the vibrations to the refrigerant circulating system is higher than if these actions are effected outside the compressor 1, so the silent operating property of a refrigerator having the compressor 1 is enhanced. In this case, the silencer 17 is formed integrally with the delivery pipe 16 to reduce the number of brazing joints during the work of installing the compressor to allow reduction of the cost of the refrigerator.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compressor for a refrigerator, and more particularly to a piping structure of a discharge portion in the compressor for a refrigerator.

[0002]

2. Description of the Related Art FIG. 2 shows a conventional high-pressure dome type compressor 31 for a refrigerator. The compressor 31 includes a sealed container-like casing 32 having a cylindrical body 33 and a lid 34 attached to the upper end of the body 33. In the casing 32, a motor portion 35 including a rotor shaft 36, a rotor 37, and a stator 38 is disposed corresponding to the body portion 33, and is not shown below the motor portion 35. A compression mechanism is disposed. Further, a discharge chamber 41 surrounded by the lid 34 is provided above the motor 35, and the discharge chamber 41 penetrates the chamber wall (that is, the wall of the lid 34). A discharge pipe 42 bent in a substantially L-shape is attached by welding.

Further, one end of an expansion type silencer 43 having a predetermined volume is connected to the downstream portion 42a of the discharge pipe 42 by brazing, and the other end of the silencer 43 is connected to a refrigerant circulation system. Are joined by brazing.

[0004] In the compressor 31, when the compression mechanism is rotated by the motor 35, the gas refrigerant recirculated from the refrigerant circulation system is sucked and compressed by the compression mechanism. The compressed high-pressure gas refrigerant is stored in the discharge chamber 41 and discharged from the discharge pipe 42 to the refrigerant pipe 44 side. In this case, the high-pressure gas refrigerant supplied from the discharge pipe 42 to the refrigerant pipe 44 side is introduced into the muffler 45 after being discharged from the discharge pipe 42 and undergoes a rapid expansion action to accompany compression. The pulsation is absorbed, and the vibration noise due to the discharge gas pulsation is suppressed.

[0005]

However, in the conventional compressor 31, a muffler 43 is connected to the discharge pipe 42, and the muffler 43 absorbs the pulsation of the discharge gas to reduce the vibration noise. Since the effect of suppressing the discharge gas pulsation by the silencer 43 is performed outside the compressor 31, the effect of suppressing vibration transmission to the refrigerant pipe 44 side is not sufficient. There is room for improvement in terms of quiet operation of the provided refrigerator.

Further, the muffler 43 is connected to the discharge pipe 42
When the compressor 31 is assembled to the refrigerator, the joint 45 between the discharge pipe 42 and the muffler 43 and the joint 46 between the muffler 43 and the refrigerant pipe 44 are separately provided. Since the joining is performed by brazing, the number of brazing joints is large, and there is also a problem that the number of working steps in manufacturing the refrigerator increases, which leads to an increase in manufacturing cost.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a compressor for a refrigerator capable of ensuring both quiet operation and reducing manufacturing costs.

[0008]

Means for Solving the Problems In the present invention, the following configuration is adopted as specific means for solving such problems.

In the first aspect of the present invention, the gas refrigerant flowing from the refrigerant circulating system is compressed, and the compressed gas refrigerant is discharged from the discharge pipe 16 attached through the chamber wall 11a of the discharge chamber 11 to the discharge pipe. In the compressor for a refrigerator to be supplied to the refrigerant circulation system via the refrigerant pipe 18 connected to the downstream part 16b of the compressor 16, a muffler 17 is provided in the upstream part 16a of the discharge pipe 16 located in the discharge chamber 11. It is characterized by that.

According to a second aspect of the present invention, in the compressor for a refrigerator according to the first aspect, the muffler 17 is formed integrally with the discharge pipe 16.

[0011]

According to the present invention, the following effects can be obtained by adopting such a configuration.

According to the compressor for a refrigerator according to the first invention of the present application, the gas refrigerant flowing from the refrigerant circulation system is compressed, and the compressed gas refrigerant is supplied to the chamber wall 1 of the discharge chamber 11.
1a, the discharge pipe 16 is connected to a refrigerant circulation system via a refrigerant pipe 18 connected to a downstream portion 16b of the discharge pipe 16 to supply a refrigerant to the refrigerant circulation system. Since the muffler 17 is provided in the upstream portion 16a located in the chamber 11, the function of absorbing the discharge gas pulsation and the function of suppressing the vibration noise by the muffler 17 are performed on the compressor 1 side. The effect of suppressing vibration transmission to the refrigerant circulating system is higher than in the conventional case where the function of absorbing the discharge gas pulsation by the silencer 43 and the function of suppressing the vibration noise due to this are performed outside the compressor 31. As a result, the quiet operation of the refrigerator including the compressor 1 is enhanced, and the commercial value thereof can be expected to be improved.

According to the compressor for a refrigerator according to the second aspect of the present invention, the following specific effects can be obtained in addition to the effects described above. That is, in the present invention, since the muffler 17 is formed integrally with the discharge pipe 16, a joining portion by brazing on the compressor side during the installation work of the compressor 1 is connected to the discharge pipe 16 and the discharge pipe 16. Refrigerant pipe 2
3, the number of joints by brazing is smaller than, for example, the case where the joint by brazing on the compressor 31 side is two places at both ends of the muffler 43 as in the conventional case. The work man-hour is reduced by a small amount, and the manufacturing cost of the refrigerator can be reduced.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be specifically described based on preferred embodiments.

FIG. 1 shows a main part of a high-pressure dome type refrigerator compressor 1 according to an embodiment of the present invention. The compressor 1 includes a closed casing 2 having a body 3 having a cylindrical shape and a lid 4 attached to an upper end of the body 3. A motor unit 5 including a rotor shaft 6, a rotor 7 and a stator 8 is disposed in the casing 2 so as to correspond to the body 3, and is not shown below the motor unit 5. A compression mechanism is disposed.

Further, a discharge chamber 11 surrounded by the lid 4 is provided above the motor section 5, and the discharge chamber 11 has a discharge pipe bent substantially in an L shape. A discharge pipe section 15 formed integrally with an expansion type silencer 17 having a predetermined volume and the discharge pipe 16 is attached to the chamber wall 11a of the discharge chamber 11 (that is, the wall section of the lid section 4). The muffler 17 is disposed in a state where the muffler 17 is located inside the discharge chamber 11 while being penetrated. The discharge pipe 16
Is fixed to the lid 4 by welding when the compressor 1 is manufactured.

When assembling the compressor 1 to the refrigerator, the downstream part 16b of the discharge pipe 16 fixed to the compressor 1 and one end of the refrigerant pipe 18 forming the refrigerant circulation system are connected. The joint 19 is joined by brazing.

In the compressor 1 constructed as described above, the compression mechanism section is driven to rotate by the motor section 5, so that the gas refrigerant returned from the refrigerant circulation system is sucked and compressed by the compression mechanism section. At the same time, the compressed high-pressure gas refrigerant is stored in the discharge chamber 11 and discharged to the refrigerant pipe 18 via the discharge pipe 15.

In this case, the high-pressure gas refrigerant flowing into the silencer 17 from the discharge chamber 11 and discharged from the discharge pipe 16 to the refrigerant circulation system via the refrigerant pipe 18 is abruptly generated in the silencer 17. The pulsation caused by the compression is absorbed by receiving the expansion effect, and the vibration noise caused by the pulsation of the discharged gas is suppressed.

By the way, in the compressor 1 of this embodiment and the refrigerator configured with the compressor 1, the following specific operation and effects can be obtained.

That is, in the compressor 1, the muffler 17 is provided in the upstream portion 16a of the discharge pipe 16 located in the discharge chamber 11 as described above.
The function of absorbing the pulsation of the discharged gas and the function of suppressing the vibration noise due to this are performed on the compressor 1 side.
As a result, for example, as compared with the conventional configuration in which the silencer absorbs the discharge gas pulsation and suppresses the vibration noise by the muffler outside the compressor, the vibration transmission suppression effect to the refrigerant circulation system is reduced. And therefore the compressor 1
In the refrigerator configured with the above, the quiet operation is improved, and the improvement of the commercial value can be expected.

Further, when the muffler 17 is provided, since the muffler 17 is formed integrally with the discharge pipe 16, a joining portion by brazing on the compressor side when the compressor 1 is installed. Is only a joining portion 19 between the discharge pipe 16 and the refrigerant pipe 23, and is joined by brazing as compared with, for example, the case where the discharge pipe and the muffler on the compressor side are separately formed as in the related art. Since the number of parts is small, the number of work steps is reduced by that much, and the production cost of the refrigerator can be reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a compressor according to an embodiment of the present invention.

FIG. 2 is a sectional view of a main part of a conventional compressor.

[Explanation of symbols]

1 is a compressor, 2 is a casing, 3 is a trunk, 4 is a lid, 5
Denotes a motor unit, 6 denotes a rotor shaft, 7 denotes a rotor, 8 denotes a stator, 11 denotes a discharge chamber, 15 denotes a discharge pipe unit, 16 denotes a discharge pipe, 17 denotes a muffler, 18 denotes a refrigerant pipe, and 19 denotes a joint.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Takayuki Takahashi 1304 Kanaokacho, Sakai-shi, Osaka Daikin Industries, Ltd. Sakai Seisakusho Kanaoka Factory F-term (reference) 3H003 AA05 AB03 AC03 BA04 CD01 CF04

Claims (2)

[Claims] 1. A discharge pipe (16), which compresses a gas refrigerant flowing back from a refrigerant circulation system and attaches the compressed gas refrigerant through a chamber wall (11a) of a discharge chamber (11).
A compressor for supplying to the refrigerant circulating system through a refrigerant pipe (18) connected to a downstream portion (16b) of the discharge pipe (16), wherein the discharge chamber of the discharge pipe (16) A compressor for a refrigerator, wherein a muffler (17) is provided in an upstream portion (16a) located in (11). 2. The compressor according to claim 1, wherein said muffler (17) is formed integrally with said discharge pipe (16).