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Screw type refrigerating compressor for ship

A refrigeration compressor and screw-type technology, applied in the field of compressors, can solve the problems of non-adjustable internal pressure volume ratio, small application range, and small cooling capacity, so as to increase the application range, ensure normal operation, and increase cooling capacity. Effect

Inactive Publication Date: 2009-11-18
DALIAN REFRIGERATOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing compressors with this structure are not suitable for marine use due to their small scope of application and non-adjustable internal pressure-to-volume ratio. Currently, marine refrigeration compressors all use piston-type compressors with small cooling capacity and large volume.

Method used

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  • Screw type refrigerating compressor for ship
  • Screw type refrigerating compressor for ship
  • Screw type refrigerating compressor for ship

Examples

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Embodiment Construction

[0011] Such as figure 1 , 2 , shown in 3: 5 is an intermediate body, 4 is an exhaust end seat, and 7 is an air suction end seat, which are fixedly connected by bolts to form a body. 2 are twin-screw rotors arranged parallel to each other, and each rotor is supported on the machine body through bearings. A regulating cylinder 10 connected with the hydraulic control device is fixedly connected to the suction end seat 7, and a regulating valve group is formed in the body through a piston 9, two pistons 8 and regulating valve body 6 matched with the regulating cylinder 10, for Regulatory control of the entire compressor. The suction port 1 is provided above the intermediate body 5 . An exhaust port 16 is provided below the exhaust end seat 4 .

[0012] The body is processed with an air supply port 11 for high-temperature working conditions and an air supply port 12 for low-temperature working conditions. Each air supply port communicates with the compression chamber inside th...

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Abstract

The invention relates to a screw type refrigerating compressor for a ship, which comprises an intermediate body (5) provided with an air suction inlet (1) on the upper part and a machine body consisting of an exhaust end seat (4) and an air suction end seat (7), wherein a twin-screw rotor (2) is supported in the machine body, and an adjusting valve set controlled by an adjusting oil cylinder (10) is arranged in the machine body. The compressor is characterized in that the machine body is internally provided with a high-temperature working condition air supplementing opening (11), a low-temperature working condition air supplementing opening (12), a high-temperature working condition hydrojet opening (13) and a low-temperature working condition hydrojet opening (14) which are communicated with an inside compression chamber of the machine body; the machine body is also provided with a rotor oil injection opening (15); and the twin-screw rotor (2) is supported on the machine body through a rolling bearing. The screw type refrigerating compressor has the advantages of improving the refrigerating capacity, expanding the application range, having adjustable internal air pressure volumetric ratio and improving the energy efficiency ratio of the compressor.

Description

technical field [0001] The invention relates to a compressor, in particular to a marine screw refrigeration compressor. Background technique [0002] The structure of the existing screw refrigeration compressor has a body, which is composed of an intermediate body, suction end seats and exhaust end seats located on both sides of the intermediate body; twin-screw rotors meshing with each other are supported by bearing bushes inside the body , one of the rotors is connected to the power unit through the rotor shaft, and the bearing bush is forced to be lubricated by the lubricating channel on the body and the oil supply device. An air suction port communicating with the compression chamber where the screw rotor is located is arranged above the intermediate body, and an exhaust port communicating with the compression chamber is also provided on the body. The inside of the machine body is located between the suction port and the exhaust port, and a regulating valve group contro...

Claims

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Application Information

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IPC IPC(8): F04C18/16F04C29/00
Inventor 徐文轩何国祥陈建刚廖旭东
Owner DALIAN REFRIGERATOR
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