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Compressor

Compressor description/claims

1. Field

This relates to a compressor, and more particularly to a compressor which compresses working fluids into compressed pressure and provides the same in a heat exchange cycle.

2. Background

Compressors convert mechanical energy into compressive force. Disturbances in the flow of working fluid to a compressive portion thereof, inefficient or incomplete discharge of the fluid once compressed, and excessive vibration and friction may all degrade overall performance of the compressor.

Accordingly, the embodiments as broadly described herein solve the above-mentioned problems, and an object is to eliminate a loss of working fluids during suction into a compression chamber.

Another object is to provide a compressor having no re-expansion loss.

Still another object is to minimize friction in a compressing device for compressing working fluids.

Yet still another object is to relatively lower the temperature of working fluids compressed in a compression chamber.

Another object is to allow working fluids compressed in a compression chamber to flow outside without being discharged into the internal space of the compression chamber.

A further object is to absorb vibrations and shocks through supporting portions where parts constituting a compressor are installed, using an elastic member.

In order to accomplish these objects, there is provided a compressor including: a hermetic vessel having therein a hermetic space; a motor supported in the hermetic space by an elastic member, and having a stator and a rotor electromagnetically interacting with each other so as to generate driving force as the rotor rotates; and a compressing device receiving the driving force of the motor through a crank shaft, that is press-fitted into the rotor with the same center of rotation as the rotor so as to rotate with the rotor, and having, in a compression chamber provided in a cylinder, a roller provided eccentric to the center of rotation of the crank shaft and a vane interworking with the roller, both dividing the compression chamber into two regions and compressing the working fluids.

The compressing device may include: a main support bearing rotatably supporting the crank shaft with the stator of the motor installed thereunder; the cylinder installed on the main bearing with the compression chamber passing through the center thereof; an auxiliary bearing installed on the cylinder to rotatably support an upper end of the crank shaft, and defining the compression chamber together with the cylinder and the main bearing; the roller provided eccentric to the center of rotation of the crank shaft, an outer face of which sequentially comes into contact with an inner face of the compression chamber to compress working fluids; and the vane protruding through the inner face of the compression chamber to contact, at its leading end, the roller to partition the compression chamber.

The working fluids transferred from outside through a suction pipe installed through the hermetic vessel may be directly transferred to the compression chamber of the compressing device through a suction silencer and a supply pipe.

The working fluids compressed in the compression chamber of the compressing device may be discharged to an ejection room defined by an ejection cover installed in the auxiliary bearing constituting the compressing device, under the control of an ejection valve.

A connector pipe may be provided such that it communicates, at its one end, with the ejection room through the ejection cover, and communicates, at its other end, with an ejection pipe passing through the hermetic vessel.

The crank shaft may be provided with an oil passage along its internal portion and outer face so as to suck upward the oil in the lower portion of the hermetic vessel and to transfer the same to a heating section and a friction section.

In another embodiment, there is provided a compressor including: a hermetic vessel having therein a hermetic space; a motor provided in the hermetic space, and having a stator and a rotor electromagnetically interacting with each other so as to generate driving force; a compressing device receiving the driving force of the motor through a crank shaft having the same center of rotation as the rotor, and compressing working fluids in a compression chamber provided in a cylinder; a suction silencer transferring the working fluids transferred from outside of the hermetic vessel to the compression chamber of the compressing device; and a connector pipe receiving the working fluids compressed in the compressing device and transferring the same outside of the hermetic vessel.

The stator of the motor may be supported in the hermetic vessel by an elastic member.

The stator may be fixed to the lower end of the compressing device so that the compressing device is substantially supported by the elastic member supporting the stator.

The compressing device may include: a main bearing rotatably supporting the crank shaft; the cylinder installed on the main bearing with the compression chamber, through which the crank shaft passes, passing through the center thereof; an auxiliary bearing installed on the cylinder to rotatably support an upper end of the crank shaft, and defining the compression chamber together with the cylinder and the main bearing; a roller provided eccentric to the center of rotation of the crank shaft, an outer face of which sequentially comes into contact with an inner face of the compression chamber to compress working fluids; and a vane supported by the elastic member so as to protrude through the inner face of the compression chamber to contact, at its leading end, the roller to divide the compression chamber into two regions.

The compression chamber of the cylinder corresponding to both sides of the vane may be provided with a suction hole and an ejection hole so as to allow working fluids to flow inside and outside of the compression chamber, wherein the suction hole directly communicates with the suction silencer and the ejection hole is opened and closed by an ejection valve.

• Provisional Patent
• Utility Patent

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