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Shell low-pressure rotary compressor

A rotary compressor and compressor technology, applied in the field of rotary compressors, can solve problems such as insufficient oil supply, reduced efficiency of rotary compressors, and difficulty in lubricating sealed sliding vane chambers

Inactive Publication Date: 2009-09-09
GUANGDONG MEIZHI COMPRESSOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, it is necessary to limit the amount of oil supplied to the compression chamber of the cylinder; on the other hand, there is a problem that the amount of oil supplied to the compression chamber of the cylinder is insufficient, resulting in a decrease in the efficiency of the rotary compressor; and the sealed vane cavity is lubricated is also more difficult

Method used

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  • Shell low-pressure rotary compressor
  • Shell low-pressure rotary compressor

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0024] see figure 1 , shows an example of the system configuration and compressor arrangement equipped with the shell low-pressure rotary compressor 1 of the present invention, and this system corresponds to an air conditioner, a refrigerator, or a water heater. The internal pressure of the shell of the compressor 1 is the same as the suction pressure of the compressor or the low pressure side of the system.

[0025] The high-pressure refrigerant gas compressed by the compressor 1 flows into the gas inlet pipe 33 arranged on the upper part of the oil separator 3 from the exhaust pipe 2 arranged on the side of the casing 11 , and flows into the condenser 5 from the gas outlet pipe 34 . The refrigerant condensed by the condenser 5 flows from the expansion valve 6 into the evaporator 7 to be evaporated and becomes a low-pressure refrigerant gas. The low-pressure refrigerant gas is sucked into the casing 11 through the suction pipe 8 installed on the top of the casing 11 . The o...

no. 2 example

[0058] In the second embodiment, regarding the means of supplying oil to the cylinder compression chamber 25, the first oil injection hole 48a and its related schemes in the first embodiment are used, and the description is omitted here. The following third and fourth embodiments Examples are similarly omitted.

[0059] Such as Figure 5 As shown, one end of the vane chamber oil supply pipe 49 provided on the housing 11 is opened in the vane chamber 31, and the other end communicates with the oil outlet pipe 35 of the oil separator 3, that is, the oil recovery pipe 9 and the vane The cavity oil supply pipe 49 communicates through the oil outlet pipe 35 .

[0060] The oil separated by the oil separator 3 and stored at the bottom can return to the housing 11 and the vane chamber 31 of the compressor 1 from the oil recovery pipe 9 and the vane chamber oil supply pipe 49 respectively.

[0061] Since the pressure in the sealed vane chamber 31 is the pressure on the same high-pres...

no. 3 example

[0072] see Figure 6 and Figure 7 , the main shaft oil supply pipe 53 is arranged on the side wall of the housing 11, one end of the main shaft oil supply pipe communicates with the oil outlet pipe 35 of the oil separator 3, and the other end communicates with the main bearing 15. There is a spray hole 54 opening in the high-pressure chamber 39 of the cylinder, and the spray hole 54 is opened and closed by the upper moving surface of the piston 19 through the revolution movement of the piston 19 . Oil from the oil separator 3 on the high pressure side is injected into the liquid injection hole 54 through the main shaft oil supply pipe 53 . At this time, because the liquid injection hole 54 is opened and closed by the upper end moving surface of the piston 19, oil is intermittently injected into the high-pressure chamber 39 of the cylinder. As a result, the housing controls the amount of oil supplied.

[0073] In this embodiment, by directly supplying oil to the high-pressu...

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Abstract

The invention relates to a shell low-pressure rotary compressor which comprises a compressor and an oil separator, wherein the pressure inside the shell of the compressor is a low pressure side; a motor and a compressor component connected with the motor are accommodated in the sealed shell; the compressor component comprises an air cylinder, an air cylinder compressor cavity accommodating a free rotary piston and arranged in the air cylinder, a crankshaft driving the piston, a main bearing and an auxiliary bearing which both support the crankshaft and are arranged on the upper part and the lower part of the air cylinder, and a sliding blade arranged in a sliding blade cavity; the end part of the sliding blade is supported on the outer edge of the piston, an exhaust pipe of the compressor is communicated with a gas inlet pipe arranged on the upper part of the oil separator, a gas outlet pipe arranged on the lateral side of the oil separator is communicated with a condenser, and an oil outlet pipe arranged on the bottom of the oil separator is communicated with the inner side of the integration or the inner side of the air cylinder compressor cavity. The compressor has simple and reasonable structure and low manufacture cost, can ensure the air cylinder compressor cavity to obtain optimal oil during compression, and can also ensure the lubrication of the sliding blade.

Description

technical field [0001] The invention relates to a rotary compressor, in particular to a shell low-pressure rotary compressor, suitable for HFC refrigerants such as R410A and R407C, gaseous carbon dioxide CO 2 Shell low-pressure rotary compressors on natural refrigerant air conditioners, refrigerators or water heaters such as hydrocarbon gas HC. Background technique [0002] In recent years, from the point of view of promoting global environmental protection in the process of global popularization of rotary compressors, with the improvement of the efficiency of rotary compressors, the demand for reducing the amount of refrigerant used has become more and more severe. Refrigerant CO 2 Or research acceleration of hydrocarbon HC applications on rotary compressors. However, the amount of refrigerant used for the above-mentioned rotary compressor is reduced, and the high operating pressure CO 2 Using highly flammable HC as a refrigerant, the shell low-pressure rotary compressor...

Claims

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Application Information

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IPC IPC(8): F04C18/32F04C29/02
Inventor 小津政雄陈振华
Owner GUANGDONG MEIZHI COMPRESSOR
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