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Double-cylinder rotary sealing type compressor and manufacturing method thereof

A rotary and hermetic technology, applied in the direction of pump combination, machine/engine, mechanical equipment, etc. for elastic fluid rotary piston type/oscillating piston type, which can solve distortion, compression power reduction, leakage loss or sliding loss Increase and other problems, to achieve the effect of reducing distortion, high compression power, and reducing leakage loss

Active Publication Date: 2007-07-04
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The compression mechanism part of the conventional two-cylinder rotary hermetic compressor has the following problems, that is, the internal diameter grinding part or the plane grinding part of the cylinder, which is distorted and deformed when connecting the upper and lower cylinders, is caused by increased leakage loss or sliding loss. resulting in reduced compression power
[0007] In addition, as described in Patent Document 1, in order to connect the upper and lower cylinders and the intermediate partition plate, in the case of adopting the method of connecting each cylinder and the intermediate partition plate with special bolts on the outside of the bearing, there are problems caused by the large number of bolts. price issues

Method used

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  • Double-cylinder rotary sealing type compressor and manufacturing method thereof
  • Double-cylinder rotary sealing type compressor and manufacturing method thereof
  • Double-cylinder rotary sealing type compressor and manufacturing method thereof

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no. 1 approach

[0030] 1 to 15 are diagrams showing the first embodiment. FIG. 1 is a longitudinal sectional view showing a two-cylinder rotary hermetic compressor 1000; FIG. An exploded perspective view; FIG. 3 is a top view showing that the upper bearing 9 is fixed on the upper cylinder 5 with the upper bearing connecting bolt 13; FIG. 4 is a sectional view showing the A-A line of FIG. 3; FIG. 10 is fixed on the top view of the lower cylinder 6; Fig. 6 is a sectional view showing the B-B line of Fig. 5; Fig. 7 is a sectional view showing the assembly of the upper cylinder 5, and the lower cylinder 6 and the lower bearing 10 are unassembled compression mechanism parts; Fig. 8 It is a plan view showing the state before the lower cylinder 6 and the lower bearing 10 are installed, that is, the lower bearing 10, the lower cylinder 6, and the intermediate partition plate 4 are connected to the upper cylinder 5 with the lower through bolts 16; FIG. Figure 10 is a sectional view showing the upper d...

no. 2 approach

[0052] FIG. 16 is a diagram showing a second embodiment, and is a vertical cross-sectional view of a two-cylinder rotary hermetic compressor 2000 .

[0053] As shown in FIG. 16 , in the twin-cylinder rotary hermetic compressor 2000 of this embodiment, one suction connection pipe 19 is connected from the accumulator 18 to the suction port of the upper cylinder 5 or the lower cylinder 6 . In the example of FIG. 16 , the suction connecting pipe 19 is connected to the suction port of the upper cylinder 5 .

[0054] The assembly procedure of the compression mechanism unit 30 is the same as that of the first embodiment. When assembling the two-cylinder rotary hermetic compressor 2000, insert the compression mechanism part 30 and the electric element 2 into the airtight container 1, then insert the outer tube 20 into the suction port of the upper cylinder 5, and press the inner tube 21 into it. . Thereafter, the suction connection pipe 19 from the reservoir 18 is inserted into the ...

no. 3 approach

[0063] 17 and 18 are diagrams of the third embodiment, and are cross-sectional views of main parts of the compression mechanism unit 30 .

[0064] As shown in the first embodiment and the second embodiment, since the compression mechanism part 30 is connected by each bolt, the inner diameter grinding part or the plane grinding part of the upper cylinder 5 and the lower cylinder 6 is distorted and deformed, thereby reducing the roundness, Therefore, leakage loss or sliding loss may increase.

[0065] Therefore, in order to reduce distortion of the inner diameter grinding portion, release portions (escape portions) are provided on the end faces of the threaded portion 5a and the threaded portion 6a, which are provided in the first embodiment and the second embodiment. On the upper cylinder of the two-cylinder rotary hermetic compressor, the threaded part 6a is arranged on the lower cylinder.

[0066] As shown in Fig. 17, once the upper cylinder 5 and the upper bearing 9 are fix...

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Abstract

The invention provides a dual-cylinder rotating close-type compressor comprising an electromotion element being held at the upper part of a close housing; a compression mechanism section being held at the lower part of the close housing and comprising an upper bearing, an upper cylinder, a central clapboard, a lower cylinder and a lower bearing, and being driven by the electromotion element via a crankshaft; the upper transfixion bolts for fixing the upper bearing, the upper cylinder, the central clapboard to the lower cylinder from the upper bearing side; and lower transfixion bolts for fixing the lower bearing, the lower cylinder, the central clapboard to the upper cylinder from the lower bearing side, and in addition, at least two lower transfixion bolts and two lower transfixion bolts are alternately arranged along the circumferential direction of the crank shaft rotation direction.

Description

technical field [0001] The present invention relates to a two-cylinder rotary hermetic compressor used in refrigerating and air-conditioning apparatuses such as air conditioners and refrigerators for compressing refrigerant gas, and more particularly to a method for connecting compression mechanism parts. Background technique [0002] The connection structure of the compression mechanism in the conventional two-cylinder rotary hermetic compressor does not use bolts for connecting the cylinder and the bearing, but adopts the following connection method, that is, in order to connect the upper cylinder, the lower cylinder and the intermediate partition plate , On the outer side of the bearing, each cylinder and the intermediate partition are connected using dedicated bolts (for example, refer to Patent Document 1). [0003] In addition, there is a connection method in which the upper and lower bearings and the cylinder are respectively connected, and the above-mentioned device ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C23/00
Inventor 茗ケ原将史白藤好范柬理寿史中村尚裕
Owner MITSUBISHI ELECTRIC CORP
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