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Rotary compressors and refrigeration cycle units

A rotary compressor, eccentric rotation technology, applied in rotary piston machinery, rotary piston pump, rotary piston/oscillating piston pump components, etc., can solve the problem of increased wear of blades and blocking plates and reduced sealing performance , refrigerant leakage, etc.

Active Publication Date: 2020-06-16
TOSHIBA CARRIER CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, if the lubricating oil between the vane and the plugging plate is insufficient and the oil film breaks, the wear between the vane and the plugging plate increases
As a result, there is a possibility that the reliability of the operation will be reduced
In addition, if the sealing performance between the vanes and the plugging plate decreases, and refrigerant leakage occurs between the compression chamber and the suction chamber, the compression performance may decrease.

Method used

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  • Rotary compressors and refrigeration cycle units
  • Rotary compressors and refrigeration cycle units
  • Rotary compressors and refrigeration cycle units

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0022] First, the refrigeration cycle apparatus will be briefly described.

[0023] Such as figure 1 As shown, the refrigeration cycle apparatus 1 of this embodiment includes a rotary compressor 2, a condenser 3 connected to the rotary compressor 2, an expansion device 4 connected to the condenser 3, and a rotary compressor connected to the expansion device 4. Evaporator 5 between machines 2.

[0024] The rotary compressor 2 is a so-called rotary compressor. The rotary compressor 2 compresses the low-pressure gas refrigerant taken inside to turn it into a high-temperature and high-pressure gas refrigerant. In addition, the specific structure of the rotary compressor 2 will be mentioned later.

[0025] The condenser 3 releases heat from the high-temperature and high-pressure gas refrigerant sent from the rotary compressor 2, and turns the high-temperature and high-pressure gas refrigerant into a high-pressure liquid refrigerant.

[0026] The expansion device 4 reduces the p...

no. 2 Embodiment approach

[0078] exist Figure 4 In the illustrated vane 155 , the bottom of the oil supply groove 181 is formed in an arc shape that protrudes toward the inner side in the axial direction over the entirety. Therefore, the groove depth of the oil supply groove 181 gradually becomes shallower as it goes to both the first end portion and the second end portion. The first end portion of the oil supply groove 181 opens on the rear end surface of the vane 155 . The second end portion of the oil supply groove 181 ends in the vane 155 .

[0079] Such as Figure 5 As shown, in the groove forming apparatus 190 of this embodiment, a pair of cutters 191 and 192 are configured so as to be able to approach or separate from each other. Specifically, the cutters 191 , 192 move between a processing position for processing the blade 155 positioned between the cutters 191 , 192 and a retreat position for separating from the blade 155 positioned between the cutters 191 , 192 .

[0080] The conveying m...

no. 3 Embodiment approach

[0085] exist Figure 6 In the illustrated vane 255 , the bottom of the oil supply groove 281 extends linearly outward in the axial direction as it goes from the first end to the second end. The first end portion of the oil supply groove 281 opens on one end surface of the vane 255 . The second end portion of the oil supply groove 281 ends in the vane 255 .

[0086] Such as Figure 7 As shown, in the groove forming device 290 of this embodiment, the cutter 291 is rotatably supported.

[0087] The transport mechanism 292 transports the blade 255 from upstream to downstream relative to the cutter 291 . The transport mechanism 292 holds the blade 255 in a state inclined with respect to the transport direction. Specifically, the conveyance mechanism 292 holds the blade 255 in a state in which the first end surface of the blade 255 is directed downstream and one end surface is inclined upward (towards the cutter 291 ).

[0088] In order to form the oil supply groove 281 using t...

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PUM

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Abstract

The rotary compressor of an embodiment has a container, a cylinder, closure plates, a roller, a blade, and oil feed grooves. The container stores lubricating oil. The cylinder is accommodated in the container and is cylindrical. The closure plates close the openings of the cylinder and form a cylinder chamber together with the cylinder. The roller rotates eccentrically within the cylinder chamber. The blade divides the inside of the cylinder chamber in the direction of rotation of the roller and is capable of moving into and out of the cylinder chamber as the roller rotates eccentrically. The oil feed grooves are formed in the surfaces of the blade, which face the closure plates. Each of the oil feed grooves extends in the direction of movement of the blade, has a first end in communication with the inside of the container, and has a second end terminating in the blade. The oil feed grooves are each configured so that the second end is located within the second chamber when the blade has protruded farthest into the cylinder chamber and so that the depth of the portion of the oil feed groove, which is located close to the second end, decreases toward a second end surface.

Description

technical field [0001] Embodiments of the present invention relate to a rotary compressor and a refrigeration cycle device. Background technique [0002] As a rotary compressor used in a refrigerating cycle device such as an air conditioner, there is known a rotary compressor that includes a cylindrical cylinder, a closing plate that closes the opening of the cylinder, and that rotates eccentrically in a cylinder chamber formed by the cylinder and the closing plate. The structure of the roll. In addition, a vane that divides the cylinder chamber into a compression chamber and a suction chamber is arranged in a vane groove formed in the cylinder. The blade contacts the roller, and moves forward and backward in the cylinder chamber as the roller rotates eccentrically. [0003] However, it is preferable that the above-mentioned vane slides relative to the clogging plate in a state where lubricating oil is interposed between the vane and the clogging plate. Accordingly, it is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C18/356F04C29/02
CPCF04C18/356F04C29/02
Inventor 平山卓也渡边哲永
Owner TOSHIBA CARRIER CORP