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Capacity control type rotary compressor

A rotary compressor and capacity control technology, applied in the field of rotary compressors, can solve problems such as compressor failure, insufficient heating capacity, insufficient refrigeration capacity, etc., and achieve the effects of solving the problem of overheating, simple and reasonable structure, and low production cost

Active Publication Date: 2012-08-22
GUANGDONG MEIZHI COMPRESSOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, heat pump air conditioners with both heating and cooling, as a technical solution to improve the insufficient heating capacity at lower outdoor temperatures or the insufficient cooling capacity at higher outdoor temperatures, have generally adopted increasing compressor capacity. However, due to the increase of operating load, when the compressor is running at high capacity, the overheating of the motor of the compressor and the exhaled gas will cause the compressor to fail.

Method used

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  • Capacity control type rotary compressor
  • Capacity control type rotary compressor
  • Capacity control type rotary compressor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] see figure 1 and figure 2 , is an internal configuration diagram of the capacity control type rotary compressor 10 of the present invention. figure 2 yes figure 1 The Y-Y section diagram in .

[0028] The rotary compressor 10 is composed of a capacity control type compression mechanism 80 installed in the airtight casing 11 and an electric motor 200 arranged on the top of the compression mechanism 80 . The compression mechanism 80 has two cylinders: a first cylinder 90 and a second cylinder 101, the first cylinder 90 and the second cylinder 101 are separated by a middle partition 120, and the central part of each cylinder is respectively divided into a first compression chamber and a second chamber. compression chamber.

[0029] When the total displacement of the first cylinder 90 and the second cylinder 101 of the capacity-controlled compression mechanism 80 is 100, the ratios of the displacements are 65 and 35, respectively. When the first cylinder and the seco...

Embodiment 2

[0070] In Embodiment 1, since the second sliding vane cavity 114 is sealed to become the passage of the liquid refrigerant, there is a possibility that the second sliding vane 131 may wear progressively due to insufficient lubrication. This second embodiment provides a solution to such a problem.

[0071] exist figure 1 and Figure 4 The oil hole 153 shown in , penetrates the cylinder mounting flat portion of the sub-bearing 150 . The lower end of the oil hole 153 opens a hole in the refrigerating machine oil (not shown) accumulated in the bottom of the airtight casing 11 , and the upper end of the oil hole 153 opens a hole in the second vane cavity 114 .

[0072] The opening position of the upper end of the oil hole 153 coincides with the lower moving surface of the second sliding vane 131 , and when the second sliding vane 131 approaches the top dead center, the oil hole 153 opens in the second sliding vane cavity 114 . However, when the second sliding piece 131 moves fro...

Embodiment 3

[0078] In the heating cycle and the refrigeration cycle, when it is necessary to change the amount of liquid refrigerant injected into the second cylinder 101, such as Figure 7 As shown, a capillary 71 can be added between the second one-way valve 70b and the first connection point 76 to reduce the injection amount of liquid refrigerant in one of the two cycles. Thus, in Figure 7 When the refrigeration cycle is carried out in the middle, the injection amount of liquid refrigerant is relatively small in the heating cycle.

[0079] See embodiment 2 for all the other undescribed parts, and will not repeat.

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Abstract

The invention provides a capacity control type rotary compressor comprising a capacity control device and a rotary compressor. A closed shell of the rotary compressor is internally provided with a motor and a compression mechanism; the compressing mechanism comprises a first air cylinder and a second air cylinder, and a middle separation plate for separating the first air cylinder and the second air cylinder; a first piston does eccentric rotation in a first compression chamber of the first air cylinder; a first slide sheet is stored in a first slide sheet groove of the first air cylinder; the front end of the first slide sheet is abutted against the periphery of the first piston; a second piston does eccentric rotation in a second compression chamber of the second air cylinder; a second slide sheet is stored in a second slide sheet groove of the second air cylinder; the front end of the second slide sheet is abutted against the periphery of the second piston; and a cold medium filling groove which is simultaneously communicated with a second slide sheet chamber and the second compression chamber is arranged on the lateral slide face of the second slide sheet. The capacity control type rotary compressor disclosed by the invention has the advantages of simple and reasonable structure, flexibility in operation, low manufacturing cost, reliability in operation, high energy efficiency ratio and wide application range.

Description

technical field [0001] The invention relates to a rotary compressor, in particular to a capacity control type rotary compressor. Background technique [0002] In recent years, heat pump air conditioners with both heating and cooling, as a technical solution to improve the insufficient heating capacity at lower outdoor temperatures or the insufficient cooling capacity at higher outdoor temperatures, have generally adopted increasing compressor capacity. However, due to the increase of operating load, when the compressor is running at high capacity, the overheating of the motor of the compressor and the exhaled gas will cause the compressor to fail. Contents of the invention [0003] The object of the present invention is to provide a capacity-controlled rotary compressor with simple and reasonable structure, flexible operation, low manufacturing cost, reliable operation, high energy efficiency ratio and wide application range, so as to overcome the shortcomings in the prior...

Claims

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Application Information

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IPC IPC(8): F04C23/00
Inventor 小津政雄曲阳
Owner GUANGDONG MEIZHI COMPRESSOR
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