A semi-hermetic screw refrigeration compressor based on oil-cooled motor

A refrigeration compressor and semi-sealed screw technology, applied in the field of refrigeration compressors, can solve the problems of high compressor operating pressure, motor overheating, and harsh working medium requirements, and achieve the effects of low cost, improved cooling effect, and high integration.

Active Publication Date: 2019-03-05
YANTAI MOON +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] The present invention proposes a semi-hermetic screw refrigeration compressor based on an oil-cooled motor, the purpose of which is to solve the problem of local overheating of the motor when the compressor has high operating pressure, severe requirements for working medium or high power

Method used

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  • A semi-hermetic screw refrigeration compressor based on oil-cooled motor
  • A semi-hermetic screw refrigeration compressor based on oil-cooled motor

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Embodiment Construction

[0026] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0027] like figure 1 , a semi-hermetic screw refrigeration compressor based on an oil-cooled motor, including a compressor head 1 and a motor connected to the compressor head 1, the motor includes a body, and is installed through a high-precision front end bearing 19 and a rear end bearing 15 The motor shaft 2 on the body, the rotor 9 connected with the motor shaft 2 and the stator 6 installed in the body, there is a uniform gap 8 between the stator 6 and the rotor 9 .

[0028] The motor shaft 2 is connected with the input shaft of the compressor head 1 through a split coupling 3 .

[0029] The body is composed of a motor front body 5, a motor rear body 12, a rear end cover 13 and a connecting body 4, and the motor front body 5, the motor rear body 12 and the connecting body 4 are high-strength casting structures; the motor rear body The body 12 is in...

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Abstract

The invention discloses a semi-closed screw refrigerating compressor based on an oil-cooled motor. The semi-closed screw refrigerating compressor includes a compressor head (1) and a motor, the motor includes a body, a motor shaft (2), a rotor (9) and a stator (6), a mounting hole matched with the stator (6) is arranged in the body, and the inner wall of the mounting hole is provided with a spiral groove (10); and a motor oil inlet hole (11) and a motor oil outlet hole (7) are also arranged in the motor body, and communicate with two ends of the spiral groove (10) respectively. The rear end of the motor body is also provided with a throttling hole (14) through which cooling oil is sprayed towards the inside of a motor rear end cavity; and an axial through hole (16) is arranged in the stator (6). The semi-closed screw refrigerating compressor based on the oil-cooled motor performs direct cooling through the spiral groove (10) on a wire bundle part which has the largest motor heat emission amount, particularly the stator (6), has a relatively high heat exchange coefficient, and has an ideal cooling effect.

Description

technical field [0001] The invention relates to a refrigeration compressor, in particular to a semi-hermetic screw refrigeration compressor based on an oil-cooled motor. Background technique [0002] Compressor is the core equipment of power machinery, and it plays an increasingly important role in refrigeration, heating, gas pressurization and other fields. The structure of compressors is generally divided into two categories: open type and closed type. Open type compressors use ordinary open type motors, while closed type compressors use closed type motors, and the compressor head is integrated with the motor. [0003] For open compressors, shaft seal leakage is an insurmountable problem. With the expansion of the application range of compressors, open compressors have great hidden dangers in occasions with high pressure, dangerous or expensive compressed working fluids and other demanding working fluids. [0004] Enclosed motors are widely used at present, and the cooli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/18H02K1/20H02K9/19
CPCH02K1/185H02K1/20H02K9/19
Inventor 吴华根杨永才崔一丹侯丽艳畅云峰缪会军
Owner YANTAI MOON
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