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scroll compressor

A scroll compressor, compression chamber technology, applied in the direction of rotary piston machinery, rotary piston pump, mechanical equipment, etc., can solve the problems of increase in the diameter of the check valve, productivity, difficulty in workability, etc., and achieve the injection flow rate. added effect

Active Publication Date: 2017-10-24
MITSUBISHI ELECTRIC CORP
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] However, each injection port constitutes one injection circuit, and it is difficult to improve productivity and workability by separately providing spool guards and the like.
[0006] In addition, in the structure of the existing injection check valve, the injection diameter must be relatively small compared with the outer diameter of the injection check valve. In order to ensure the injection flow required for the refrigeration cycle, the diameter of the check valve must also be increase at the same time

Method used

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Embodiment Construction

[0022] Hereinafter, the present invention will be described with reference to illustrated embodiments.

[0023] In the following description, injection refers to recompressing the liquid refrigerant (on the high pressure side), or the two-phase refrigerant, or the gas refrigerant output from the condenser while returning to the compression chamber of the compressor. In addition, the (high-pressure side) liquid refrigerant, two-phase refrigerant, or gas refrigerant output from the condenser is referred to as an injection refrigerant. In addition, the term "after output from the condenser" is not limited to the refrigerant immediately after output from the condenser, and may be, for example, refrigerant after passing through a predetermined expansion valve, a predetermined heat exchanger, or the like. In addition, the condenser can also be interpreted as a radiator, a heat exchanger that applies heat to the load side, or a gas cooler.

[0024] First, based on figure 1 The over...

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Abstract

The scroll compressor (100) of the present invention injects injection refrigerant into the compression chamber (20) from the injection port (1f), and is provided with an injection check valve mechanism (35) at the injection port (1f). The mechanism (35) is composed of an injection check valve (35a) and a spring (35b) arranged on the inflow side of the injection port (1f), and the center position of the injection check valve (35a) in the direction perpendicular to the axis is set from The center position of the outlet hole in the injection port (1f) in the direction perpendicular to the axis is shifted.

Description

technical field [0001] The present invention relates to scroll compressors with injection check valves. Background technique [0002] Conventionally, there is a scroll compressor in which when the injection pressure is higher than the pressure in the compression chamber, the injection check valve is opened to inject injection refrigerant into the compression chamber. [0003] In addition, in such a scroll compressor, when the injection pressure is lower than the pressure in the compression chamber, the injection check valve is closed to prevent the refrigerant in the compression chamber from flowing back into the injection circuit (for example, refer to Patent Document 1). [0004] Patent Document 1: Japanese Patent Laying-Open No. 3-43691 ( figure 1 ) [0005] However, each injection port constitutes one injection circuit, and it is difficult to provide a spool cover or the like for each injection port, in terms of productivity and workability. [0006] In addition, in t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C18/02
Inventor 鸣海圭亮茗原将史立花显二
Owner MITSUBISHI ELECTRIC CORP
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