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Suction Muffler

a suction muffler and muffler technology, applied in the direction of positive displacement liquid engines, pump components, liquid fuel engine components, etc., can solve the problems of molten resin jumping, slag produced inside the suction muffler is difficult to check for production and remove in advance, and the compressor stops, so as to enhance the reliability of the compressor, and prevent the production of slag

Inactive Publication Date: 2007-09-13
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0009] The present invention provides a suction muffler capable of enhancing the reliability of compressor.
[0010] The suction muffler according to the present invention has a plurality of bonding portions made of resin members either fit to each other or put in contact with each other, and bonded by means of a resin belt formed with secondary injection molding. The surface of the bonding portion of the resin members molded in advance are bonded to each other by utilizing the heat of the molten resin injected with secondary injection molding. To that purpose, the pressing of the bonding portions and the shaking given to the suction muffler are controlled to control the production of so-called slag. Such suction muffler according to the present invention can eliminate the step of pressing to the bonding portions, in the case where a suction muffler constructed with a plurality of resin members is bonded, thus enabling to provide a suction muffler capable of enhancing the reliability of compressor, by preventing production of slag.
[0011] The concrete construction of the suction muffler according to the present invention consists in either fitting or putting in contact with each other the bonding portion of a plurality of resin members formed in advance by injection molding. At the same time, the bonding portion is bonded with a resin belt formed with secondary injection molding. Since the bonding of molten resin is made with heat only, this enables to prevent production of slag due to pressing of bonding portions, and to thus provide a suction muffler capable of enhancing the reliability of compressor.

Problems solved by technology

For that reason, in case the bonding accuracy at the bonded portion is not so good, a problem is produced that part of the molten resin jumps out through the gap at the bonded portion, sticking to the inside of the suction muffler and solidifying there.
Such slag produced inside the suction muffler is difficult to check for production and remove in advance, because the production of slag takes place after the bonding of resin members.
Should the slag remaining inside the suction muffler be separated, it is sucked into the compressor together with the refrigerant, to present a problem of narrowing the sliding portion of the compressor, eventually leading to a stop of compressor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

embodiment 1

Preferred Embodiment 1

[0049]FIG. 1 is a perspective view of the suction muffler in preferred embodiment 1 of the present invention. FIG. 2A, FIG. 2B are side exploded views of the suction muffler in preferred embodiment 1 of the present invention. FIG. 3A is an expanded view of the portion A indicated in FIG. 2, in preferred embodiment 1, while FIG. 3B is an expanded view of the portion B indicated in FIG. 2, in preferred embodiment 1. FIG. 4A, FIG. 4B, FIG. 4C are disassembling-assembling drawings of the suction muffler in preferred embodiment 1.

[0050] In FIG. 1, the outside of suction muffler 101 is filled with gas such as refrigerant, etc. Suction muffler 101 comprises suction port 110 for sucking the gas, and hollow portion 135 for once releasing the sucked gas. Moreover, it also comprises communicating tube 108 for connecting between hollow portion 135 and suction port 110, communicating tube 115 for leading the gas sucked into hollow portion 135 to the cylinder of a reciproca...

embodiment 2

Preferred Embodiment 2

[0061]FIG. 5 is a side exploded view of the suction muffler in preferred embodiment 2 of the present invention. FIG. 6A is an expanded view of the portion C indicated in FIG. 5, in preferred embodiment 2. FIG. 6B is an expanded view of the portion D indicated in FIG. 5, in preferred embodiment 2. FIG. 7A to FIG. 7C are disassembling-assembling drawings of the suction muffler in preferred embodiment 2.

[0062] In FIG. 5, suction muffler 201 comprises suction port 210 for sucking the gas, and hollow portion 235 for once releasing the sucked gas. Moreover, it also comprises communicating tube 208 for connecting between hollow portion 235 and suction port 210, communicating tube 215 for leading the gas sucked into hollow portion 235 to the cylinder of a reciprocating compressor, etc., and tail pipe 230 formed separately and connected to communicating tube 215 for extending the length of pipe inside the suction muffler.

[0063] Hollow portion 235 is formed by bonding ...

embodiment 3

Preferred Embodiment 3

[0071]FIG. 8 is a perspective disassembling schematic diagram of suction muffler 301. Concavity 390 is formed in resin member 305 of suction muffler 301. Moreover, concavity 385 and insert port 302 are also formed in resin member 305. Furthermore, tail pipe 330 is provided with inserting portion 332 for insertion into insert port 302, and projection 334 in columnar shape. Fitting line 336 indicates that inserting portion 332 is fit into insert port 302.

[0072]FIG. 9 is a side exploded view of the suction muffler in preferred embodiment 3. Suction muffler 301 comprises suction port 310 for sucking the gas such as refrigerant, etc., and hollow portion 335 for once releasing the sucked gas. It also comprises communicating tube 308 for connecting between hollow portion 335 and suction port 310, communicating tube315 for leading the gas sucked into hollow portion 335 to the cylinder of a reciprocating compressor, etc., and tail pipe 330 formed separately and connect...

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PUM

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Abstract

Provide a suction muffler capable of enhancing the reliability of compressor, by preventing production of molten resin (slag) which solidifies in the suction muffler. Fit or put in contact with each other bonding portion (140) of a plurality of resin members (105), (120) formed in advance by injection molding, and bond bonding portion (140) with a resin belt formed with secondary injection molding. Because the bonding is made with the heat of the molten resin itself, it becomes possible to provide a suction muffler capable (101) of enhancing the reliability of compressor, by preventing production of slag due to pressing of bonding portion (140).

Description

TECHNICAL FIELD [0001] The present invention concerns a suction muffler for silencing simultaneously as it absorbs a gas, more specifically a suction muffler made of resin. BACKGROUND ART [0002] In recent years, there is a strong request for equipment with high energy efficiency, as hermetic compressor used for refrigerator, etc. from the viewpoint of prevention of global warming. It is already known that, generally, a suction muffler with low thermal conductivity made of synthetic resin, etc. is suitable as suction muffler to be used for hermetic compressor. [0003] Conventionally, as suction muffler, a product bonded by ultrasonic welding by having a projection and a concavity respectively at the bonding portion of the mating molded resin piece is known (refer to Japanese Laid-Open Patent Publication No. S59-43917, for example). [0004]FIG. 11 is a side exploded view of a conventional suction muffler. Suction muffler 1 is constructed by bonding first body 2 and second body 3 made of...

Claims

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Application Information

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IPC IPC(8): F04B39/00
CPCF04B39/0072
Inventor MURATA, TAKESHI
Owner PANASONIC CORP