Unlock instant, AI-driven research and patent intelligence for your innovation.

Screw compressor

A technology of compressors and rotor compressors, applied in rotary piston machinery, mechanical equipment, machines/engines, etc., can solve problems such as high investment cost and large buffer cabinet space

Inactive Publication Date: 2009-02-04
SVENSKA ROTOR MASKINER AB
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compressors with uncontrolled speeds therefore require larger buffer cabinets and larger storage cabinet spaces, with consequent high investment costs

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Screw compressor
  • Screw compressor
  • Screw compressor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Now, refer to figure 1 and figure 2 , the construction and working principle of the helical screw compressor will be briefly described.

[0020] A pair of intermeshing screw rotors 101 , 102 is rotatably mounted in a workspace delimited by two end walls 103 , 104 including a barrel wall 105 extending between said end walls. The barrel wall 105 has a shape substantially corresponding to the shape of two intersecting cylinders, from figure 2 evident in. Each rotor 101, 102 includes a plurality of vanes 106 and 107, respectively, and intermediate slots 111 and 112 extending helically along the rotor. The rotor 101 is a male rotor with the main body of each blade 106 outside the pitch circle, and the other rotor 102 is a female rotor with the main body of each blade 107 inside the pitch circle. The female rotor 102 typically has more blades than the male rotor 101 . A typical combination is that the male rotor 101 has four lobes and the female rotor 102 has six lobes...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A helical screw-rotor compressor (K) adapted to work relative to a pressure vessel (T) whose pressure P can vary between a minimum pressure P2 and a maximum pressure P1, said compressor Driven by an electric motor (M), which is a commutated motor. The electric motor (M) is characterized in that it has a property within the working range defined by the pressure interval P of said pressure vessel such that half of the torque of said electric motor increases the speed of the electric motor by at least 6%. Preferably, the compressor is optimized for an internal volume factor at which the compressor pressure is lower than P2+0.85*(P1-P2) when switched on.

Description

technical field [0001] The invention relates to a speed-adjustable helical screw rotor compressor suitable for working relative to a pressure vessel whose pressure P is within the working range of the compressor and which is allowed to vary between a minimum pressure and a maximum pressure. The compressor is driven by an electric motor. Background technique [0002] Small pressure changes are desired in such pressure vessels or storage cabinets. In the case of large storage cabinets, this can be achieved by very frequent start-stop control devices or by regulating the speed (r.p.m) of the motor. [0003] Compressor speed control is commonly used in air compressors driven by high-power electric motors in the range of 10-30kW. Compressor speed is controlled by means of electronic controls. For compressors driven by weak electric motors, such as motors of lower or lower power than 10-30 kW, it is not economical to use electronic circuit based compressor speed control. This ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F04C18/16F04C28/08F04C
CPCF04C28/08F04C18/16
Inventor M·松德斯特伦H·厄曼
Owner SVENSKA ROTOR MASKINER AB