Cooling unit and compressor

A refrigeration device and compressor technology, which is applied in the field of compressors, can solve the problems of reduced lubricating oil viscosity, reduced operating capacity, wear reliability, etc.

Active Publication Date: 2009-05-27
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the exhaust gas temperature is high, the internal temperature of the compressor as a whole also rises, so the temperature of the lubricating oil also rises. question
Furthermore, there is a problem of lowering the operating capacity

Method used

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  • Cooling unit and compressor
  • Cooling unit and compressor
  • Cooling unit and compressor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 2

[0052] In the above-mentioned first embodiment, although the timing of injecting the gas-liquid two-phase flash gas into the hermetic rotary refrigerant compressor 1 is not particularly described, in the second embodiment, effective injection timing and A specific structure of the hermetic rotary refrigerant compressor for injection at this timing will be described.

[0053] [33] First, a specific configuration of the hermetic rotary refrigerant compressor 1 will be described below.

[0054] Figure 4 and Figure 5 is to represent Embodiment 1 figure 1 The cross-sectional structure of the hermetic rotary refrigerant compressor 1 and the cross-sectional structure inside the compression chamber.

[0055] The hermetically sealed rotary refrigerant compressor 1 has, in a sealed container 20, an electric element unit 21 composed of a stator 21a and a rotor 21b, a compression element unit 23 driven by a rotating shaft (crankshaft) 38 integrally attached to the rotor 21b, Refrige...

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PUM

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Abstract

A refrigeration device, even in the use of R32 refrigerant, the compressor can reduce the temperature of the exhaust gases to ensure that the compressor and the heat resistance and wear resistance, and the achievement of reliability and operational capabilities. The device has a freezer: airtight container for the environment from the pressure of gas compressor (1), the outdoor heat exchanger (3), gas-liquid separator (5), the first expansion valve (7), and indoor heat exchanger (9), the use of R32, or at least more than 60% of the quality of the mixed refrigerant R32 refrigerant as a refrigerant, the refrigeration device also has gas-liquid separator from the above mentioned export will be a part of refrigerant as a gas-liquid two-phase sharp saturated evaporator refrigerating fluid flash evaporation gas into the compressor described in (1) of the jet loop (40). The compressor is provided with a reservoir at the inhalation side of the component of compression, and the flash evaporation gas is injected into the entrance of the refrigerating fluid in the reservoir.

Description

technical field [0001] [01] The present invention relates to a refrigerating device using R32 refrigerant and a compressor used in the refrigerating device. Background technique [0002] [02] A conventional refrigerating apparatus has a refrigerating cycle in which a compressor, a condenser, an expansion valve, and an evaporator are sequentially connected through refrigerant piping. In this type of refrigeration system, when R32 refrigerant is used as the refrigerant, it has a characteristic that the discharge gas temperature at the time of compression is 10 to 20°C higher due to its thermophysical properties than R22 refrigerant and R410A refrigerant. . In this way, if the exhaust gas temperature rises, the temperature of the compressor rises and exceeds the heat-resistant temperature of the motor insulation material during overload operation such as heating when the outside air is low, resulting in a problem that reliability decreases. [0003] [03] In addition, as a com...

Claims

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Application Information

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IPC IPC(8): F25B1/00F04C18/356
CPCF04C18/356F04C23/008F04C28/28F04C29/026F04C29/028F04C2210/26F04C2240/40F25B43/006Y10S415/00Y10S417/902
Inventor 茗个原将史白藤好范柬理寿史中村尚裕
Owner MITSUBISHI ELECTRIC CORP
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