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Semi-hermetic piston-type compressor

A piston type, compressor technology, applied in the field of compressors, can solve the problems of many parts, increased manufacturing cost of the compressor, complex structure, etc., and achieve the effects of low manufacturing cost, high oil return efficiency, and simple structure

Active Publication Date: 2010-07-07
PANASONIC APPLIANCES REFRIGERATION SYST DALIAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantage is: the efficiency of the internal oil return depends on the structural design of the compressor, and the oil return device of the compressor in the prior art has a complex structure and many parts, which increases the manufacturing cost of the compressor

Method used

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the embodiment of accompanying drawing.

[0019] The compressor is composed of a motor cavity 10, a motor rotor 5 installed in the motor cavity, a motor stator 4, a crankcase 14, a crankshaft 1 installed in the crankcase driven by the motor rotor, and a cylinder-piston-connecting-rod assembly 2 connected to the crankshaft. The diameter D of the crankshaft 1=45mm, the end of the long axis side of the crankshaft is equipped with a pressure equalizing pipe 6, the diameter of the pressure equalizing pipe 6 is 8mm, and the pressure equalizing pipe 6 is connected to the long axis end of the crankshaft through the sealing cap 7 and the connecting pipe 8 The connecting pipe 8 is an externally threaded pipe, and the externally threaded pipe is connected with the screw hole on the end surface of the long axis side of the crankshaft. The screw hole on the long axis side end surface of the crankshaft communica...

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Abstract

The invention relates to a semi-hermetic piston-type compressor. The semi-hermetic piston-type compressor comprises a motor cavity, a motor, a crankcase, a crankshaft and a cylinder piston connecting rod component; the semi-hermetic piston-type compressor is characterized in that: a long shaft side of the crankshaft is provided with a pressure balanced hole and a pressure balanced pipe; the pressure balanced hole is a through hole which is formed from the end face of the long shaft side of the crankshaft along the axis direction of the long shaft side of the crankshaft inside the long shaft side of the crankshaft to the end face of a crank, which is arranged in the crankcase, of the crankshaft adjacent to the long shaft side of the crankshaft; one end of the pressure balanced pipe is communicated with the pressure balanced hole; the other end of the pressure balanced pipe is communicated with the motor cavity; an included angle between the axis of the pressure balanced pipe and the axis of the long shaft of the crankshaft is between 0 and 90 degrees; a lowest part of a clapboard between the motor cavity and the crankcase of the semi-hermetic piston-type compressor is provided with a one-way valve; an input port of the one-way valve is formed at one side of the motor cavity; and an output port of the one-way valve is formed at one side of the crankcase. The semi-hermetic piston-type compressor has the remarkable advantages that: a few parts are used to solve the problem of inner oil return of the compressor, and the semi-hermetic piston-type compressor has low manufacturing cost, high oil return efficiency, simple structure, simple machining and manufacturing, and safety and reliability.

Description

technical field [0001] The invention relates to the field of compressors, in particular to a semi-hermetic piston compressor with an oil return device. Background technique [0002] When the semi-hermetic piston compressor is working, when the working fluid is discharged from the compressor, it is always discharged with a small amount of lubricating oil. The discharged lubricating oil must try to make it return to the crankcase of the compressor, otherwise it will cause insufficient lubricating oil in the compressor. Insufficient lubrication will cause the bearing surface to be worn or scratched, and in severe cases, it will cause the shaft to be stuck, the piston to be stuck in the cylinder, and the resulting connecting rod to bend and break. The existing technology of returning lubricating oil to the crankcase of semi-closed piston compressors is the oil return method of the air return pipe. The oil enters the motor cavity from the suction port of the compressor with the ...

Claims

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Application Information

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IPC IPC(8): F04B35/04
Inventor 王枫
Owner PANASONIC APPLIANCES REFRIGERATION SYST DALIAN CO LTD
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