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rotary compressor

A technology of rotary compressor and compression mechanism, applied in rotary piston/oscillating piston pump components, elastic fluid rotary piston/oscillating piston pump combination, mechanical equipment, etc., can solve the problem of auxiliary bearing. Manufacturing, long refrigerant flow path, low production efficiency and other problems, to achieve the effect of low cooling capacity and efficiency improvement, easy cross-sectional area, and efficiency improvement

Active Publication Date: 2015-11-18
GUANGDONG MEIZHI COMPRESSOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the refrigerant flow path is long, the resistance loss is large
In addition, due to the complex design of the hollow silencer chamber, the manufacturability of the auxiliary bearing is sacrificed, that is, the auxiliary bearing is difficult to manufacture and the production efficiency is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] see Figure 1-Figure 2 , is the appearance of the rotary compressor R and the refrigeration cycle including the rotary compressor R.

[0054] The external suction pipe 8 of the rotary compressor R is connected to the low-pressure chamber 15 formed at the bottom of the casing 2, and a pilot valve T having a three-way valve function is provided on the side of the casing 2. Therefore, compared with the appearance of a conventional rotary compressor, the rotary compressor R of the present invention is characterized in that no accumulator is provided outside the casing 2, but an external suction pipe fixed on the casing 2 is provided. 8 and pilot valve T. In addition, the pilot valve T is provided with a solenoid 4 that drives a built-in slide 3e.

[0055] see Figure 3-Figure 4 , is the interior of the rotary compressor R and the internal structure and piping method of the pilot valve T omitting the electromagnetic coil 4 .

[0056] The sealed shell 2 of the rotary comp...

Embodiment 2

[0099] see Figure 14-Figure 17 , In the second embodiment, the coil spring used in the first embodiment is changed to a tension spring, that is, the third coil spring 31 is changed. The tip of the third coil spring 31 is screwed into the threaded hole 30c provided at the bottom of the spring hole 30b of the spool valve 30 in advance. Also, if the rear end of the third coil spring 31 is screwed into the threaded hole of the bracket 32, the slide member 35 is completed.

[0100] Next, the slide valve 30 constituting the sliding part 35 is inserted into the valve cavity 20 of the cylinder 40 , and then the bracket 32 ​​is fixed on the guide cavity 22 of the main bearing 42 . Simultaneously, the main bearing 42 is fixed on the cylinder 40, and the assembly of the main bearing 42 and the cylinder 40 in which the sliding member 35 is built is completed. so, Figure 14-Figure 17 Shown is the configuration using tension springs.

[0101] In this design, if the pressure of the pre...

Embodiment 3

[0103] see Figure 18 , in the third embodiment, the axis of the bypass hole 23 opening to the compression chamber 40a is consistent with the axis of the slide valve 30 and the axis of the valve chamber 20 . In addition, the bypass chamber 45 is arranged to vertically intersect with the axis of the valve chamber 20 , and the bypass chamber 45 communicates with the bypass pipe 17 installed on the auxiliary bearing 43 .

[0104] In this embodiment 3, because the diameter of the bypass hole 23 is the same as the inner diameter of the valve chamber 20, the high precision of the bypass hole 23 and the valve chamber 20 must be ensured, so the bypass hole 23 and the valve chamber 20 need to be separated from the cylinder 40. Processing on the outside.

[0105] The valve cavity 20 is a two-stage stepped hole, including a first cylindrical hole for the slide valve 30 to slide and a second cylindrical hole with a larger diameter than the cylindrical hole. The first cylindrical hole com...

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PUM

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Abstract

The invention relates to a rotary compressor. A housing is internally provided with a compression mechanism and an electric motor; the compression mechanism comprises an air cylinder with a compression cavity, and a piston and a slide plate are arranged inside the compression cavity; an eccentric crankshaft drives the piston to perform eccentric rotation inside the compression cavity; a main bearing and a supplementary bearing, which are used for supporting the eccentric crankshaft, are respectively arranged on both sides of the air cylinder; the housing comprises a first end plate, a middle housing and a second end plate, which are respectively connected with an upper opening end and a lower opening end of the middle housing, the rotary compressor is provided with a low-pressure cavity and a suction passage and a refrigerant bypass device which are communicated with the compression cavity and are respectively communicated with the low-pressure cavity; the low-pressure cavity is surrounded by a third end plate and the second end plate, and the third end plate is arranged inside or outside the housing; and the refrigerant bypass device comprises a valve cavity and a bypass hole which are formed inside the air cylinder. The rotary compressor has the characteristics of being simple and reasonable in structure, small in size on the whole, flexible to operate, low in manufacturing cost, high in efficiency and wide in application range.

Description

technical field [0001] The invention relates to a rotary compressor, in particular to a variable capacity rotary compressor applied to air conditioners or refrigeration machines, etc., and the cooling capacity is switched in two stages by switching the bypass channel of the cylinder. Background technique [0002] Compared with the double-cylinder variable-capacity rotary compressor, the single-cylinder variable-capacity rotary compressor has a variable capacity method and frequency-variable rotation speed control, because the cost of the single-cylinder variable-capacity rotary compressor is cheap and easy to apply, So get noticed. [0003] The single-cylinder variable capacity rotary compressor realizes variable capacity by controlling the opening and closing of the bypass hole facing the side of the cylinder compression chamber. Through the switch of the bypass hole, for example, in 100% cooling capacity, that is, the mode P, and 70% cooling capacity, that is, mode S, swi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C23/02F04C29/00
Inventor 小津政雄周杏标
Owner GUANGDONG MEIZHI COMPRESSOR