JP2009150286A - Hermetic compressor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive and highly reliable compressor by reducing the number of components of a refrigerant suction portion, and distortion of a compressive element in a hermetic compressor forming a refrigerant cycle. <P>SOLUTION: This hermetic compressor includes a sealed vessel, an accumulator, a suction outer pipe connecting the sealed vessel and the accumulator, the compressive element in the sealed vessel, and an O-ring in the compressive element. The inner pipe of the accumulator is directly inserted into the O-ring, thereby reducing the distortion and the number of components. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an improvement of a hermetic compressor used for a refrigerator, an air conditioner and the like.

  Conventionally, this type of hermetic compressor includes a hermetic container, an accumulator, a suction outer pipe, a compression element in the hermetic container, and a connecting pipe, as shown in a sectional view of the main part in FIG. The accumulator was sealed by a suction outer tube, a connecting tube and a sealed container and connected to the compression element.

  In this method, since the accumulator, the compression element, the suction outer pipe, and the connection pipe are sealed by brazing, there is a problem in that the compression element is distorted by the influence of heat during brazing.

Therefore, a method of reducing distortion during press-fitting and brazing of a connecting pipe by arranging an O-ring in the compression element is known (for example, see Patent Document 1).
JP 61-118576 A

  However, in the structure in which the O-ring is arranged as described above, the number of parts increases, and it is necessary to perform an additional process for arranging the O-ring on the compression element, resulting in an increase in the cost of the compressor. .

  The present invention has been made to solve the above-described problems, and provides a low-cost and highly-reliable compressor by reducing the number of parts of the refrigerant suction portion and reducing the distortion of the compression element. For the purpose.

  In order to solve the above-described conventional problems, the hermetic compressor of the present invention provides a hermetic compressor that does not use a connecting pipe by extending the inner pipe length of the accumulator and directly inserting the inner pipe into the O-ring. . With this configuration, it is possible to reduce the number of parts and reduce distortion.

  The hermetic compressor of the present invention can provide a low-cost and highly-reliable compressor by suppressing the number of parts and distortion in the compressor element.

  In the first invention, the length of the accumulator can be extended, and an O-ring can be arranged in the compression element, thereby reducing the number of parts and reducing distortion.

  In the second invention, the inner tube of the accumulator is made of iron and is subjected to copper plating, so that the material cost can be reduced.

  In the third invention, the inner tube of the accumulator is made of iron and is not plated with copper, so that the material cost can be reduced.

  In the fourth invention, the number of parts can be reduced by raising the burring of the sealed container and eliminating the suction outer pipe.

  5th invention can reduce the thermal influence on a compression element by brazing low temperature brazing of an accumulator and an airtight container.

  In the sixth aspect of the invention, the heating at the time of brazing between the accumulator and the closed container is an induction heating method, so that a limited narrow range can be heated and the thermal influence on the compression element can be reduced.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by embodiment described below.

(Embodiment 1)
FIG. 1 shows a main part of a hermetic compressor according to an embodiment of the present invention. In FIG. 1, the compression element is provided with a circular groove and an O-ring is inserted. Conventionally, the accumulator inner tube is inserted into the compression element through the connecting tube. In the present invention, by directly inserting the accumulator inner tube into the O-ring, the number of parts and the distortion can be reduced, and a low-cost and highly reliable compressor can be provided.

(Embodiment 2)
FIG. 2 shows the main part of a hermetic compressor showing an embodiment of the present invention. In FIG. 2, by increasing the burring of the sealed container, the suction outer pipe is eliminated, and the number of parts is reduced, so that a low-cost compressor can be provided.

  As described above, the hermetic compressor according to the present invention can realize a reduction in the number of parts and lower distortion, and can provide a hermetic compressor with low cost and high reliability.

Sectional drawing of the principal part of the hermetic compressor in Embodiment 1 of the present invention. Sectional drawing of the principal part of the hermetic compressor in Embodiment 2 of this invention Cross section of the main part of a conventional hermetic compressor

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Airtight container 2 Compression element 3 Inner pipe of accumulator 4 O-ring 5 Connection pipe 6 Suction pipe 7 Burring

Claims (8)

An airtight container, an accumulator, an outer suction pipe connecting the airtight container and the accumulator, a compression element in the airtight container, and an O-ring in the compression element, and the inner tube of the accumulator is directly inserted into the O-ring A hermetic compressor characterized by that. 2. The hermetic compressor according to claim 1, wherein the inner pipe of the accumulator is plated with copper on an iron pipe. 2. The hermetic compressor according to claim 1, wherein the inner pipe of the accumulator is an iron pipe. 2. The hermetic compressor according to claim 1, wherein the suction outer pipe is eliminated by enlarging the burring of the hermetic container. 2. The hermetic compressor according to claim 1, wherein brazing of the accumulator and the hermetic container is performed by low-temperature brazing. 2. The hermetic compressor according to claim 1, wherein a heating method for brazing the accumulator and the hermetic container is performed by an induction heating method using high frequency. The hermetic compressor according to claim 1, wherein HCFC, HFC or the like not containing chlorine is used as a refrigerant. The hermetic compressor according to claim 1, wherein a natural refrigerant such as carbon dioxide or ammonia is used as a refrigerant.