Hermetic compressor

A compressor and airtight technology, which is applied in the direction of mechanical equipment, machines/engines, liquid variable displacement machines, etc., can solve the problems of increasing the cost of compressors, achieve the effect of reducing the number of parts and improving poor assembly

Inactive Publication Date: 2012-05-23
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the structure in which the O-ring is arranged as described above, as the number of parts increases, an additional process of arranging the O-ring on the compression element is required, resulting in an increase in the cost of the compressor.

Method used

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Embodiment approach 1

[0033] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited to this embodiment.

[0034] figure 1 It is a longitudinal sectional view of a hermetic compressor according to Embodiment 1 of the present invention, figure 2 is a side view of the accumulator for the hermetic compressor, image 3 It is an enlarged sectional view of the main part of the hermetic compressor.

[0035] First, use Figure 1 to Figure 3 , the overall structure of the hermetic compressor in this embodiment will be described.

[0036] Such as figure 1 As shown, the hermetic compressor of this embodiment has a compression mechanism unit 2 and a motor unit 3 inside a hermetic container 1 . The compression mechanism part 2 includes: a cylinder 11 having a cylindrical space; an upper bearing 12 closing the upper end surface of the cylindrical space of the cylinder 11; a lower bearing 13 closing the lower end surfa...

Embodiment approach 2

[0050] Figure 4 It is a cross-sectional view showing a protrusion provided on an inner pipe of an accumulator used in a hermetic compressor according to Embodiment 2 of the present invention. In addition, the basic structure of Embodiment 2 is the same as figure 1 The same, so the description is omitted.

[0051] Such as Figure 4 As shown, in the present embodiment, protrusions 23 and 24 that are staggered in the longitudinal direction are provided on the outer peripheral portion of the inner tube 21 of the accumulator 20 .

[0052] In this way, by making the protrusion 23 and the protrusion 24 stagger in the longitudinal direction, when assembling, the protrusion 23 provided on the lower side is first inserted into the flange portion 18, and then the protrusion 23 provided on the lower side is used as a fulcrum to insert the protrusion provided on the upper side. 24 is inserted into the flange portion 18, so that the inner tube 21 can be smoothly inserted into the flang...

Embodiment approach 3

[0054] Figure 5 It is a cross-sectional view showing a protrusion provided on an inner pipe of an accumulator used in a hermetic compressor according to Embodiment 3 of the present invention.

[0055] Such as Figure 5 As shown, in the present embodiment, the same effects as in the first embodiment can be obtained by providing the annular protrusion 25 on the outer peripheral portion of the inner tube 21 of the accumulator 20 .

[0056]In addition, the purpose of the present invention can be achieved when there is at least one ring-shaped protrusion 25, but two or more are preferable. The gap between the inner tube 21 and the burring portion 18 can be made more uniform by arranging a plurality of annular protrusions 25 staggered in the longitudinal direction of the inner tube 21 .

[0057] The tubular protrusion 25 can be formed by clamping the inner tube 21 with jigs each having a concave portion opposite to that of the protrusion 22 and bringing the two jigs closer togeth...

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PUM

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Abstract

Disclosed is a hermetic compressor provided with a hermetic container (1) and an accumulator (20), wherein an inner tube (21) of the accumulator (20) is inserted into a burring portion (18) of the hermetic container (1), so that the inner tube (21) is connected to the burring portion (18). A protrusion (22) is provided on the outer peripheral portion of the inner tube (21), and is disposed in a clearance between the inner tube (21) and the burring portion (18). The shape of the protrusion (22) is appropriately changed, so that the clearance between the inner tube (21) of the accumulator (20) and the burring portion (18) of the hermetic container (1) is uniformly maintained. Thus, a low-cost and highly-reliable compressor can be provided.

Description

technical field [0001] The present invention relates to improvements in hermetic compressors used in refrigerators, air conditioners, and the like. Background technique [0002] At present, this kind of hermetic compressor has a hermetic container and an accumulator (accumulator), and the accumulator is connected to the hermetic container through a connecting pipe, but in this method, there are problems due to press-fitting or brazing to the hermetic container connecting pipe. The problem of deformation of the compression element inside the closed container due to the influence of heat. [0003] Therefore, a method is known in which an O-ring is arranged between the connecting pipe and the compression element to reduce the press-fitting of the connecting pipe and the deformation during brazing. [0004] However, in the structure in which the O-ring is arranged as described above, as the number of parts increases, an additional process of arranging the O-ring on the compress...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B39/12
CPCF04B39/12F04C23/008F04C2240/30F04C2240/806
Inventor 户本隆道先本孝正
Owner PANASONIC CORP
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