Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Frequency conversion digital compressor

A compressor and frequency conversion motor technology, applied in the field of gas compressors, can solve the problems of reduced reliability, waste of resources, waste of energy, etc., and achieve the effect of reliable performance and simple structure

Active Publication Date: 2013-10-16
广东西屋康达空调有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The advantage of the digital compressor is that due to the use of PWM valve pulse modulation, the control is simple, and it can achieve a capacity output as low as 10%. 4% to 15% of the rotation speed, but under low load, the idling time takes up a relatively high proportion, resulting in obvious loss
[0004] There is no idling loss in the inverter compressor, but it is difficult to achieve a capacity output of less than 30%. It is necessary to change the pipeline design of the refrigeration and air conditioning pipeline system and release energy through hot gas bypass, which will lead to complex system design and poor reliability. reduce, and cause a waste of energy
[0005] For the realization of output capacity adjustment, either a variable frequency compressor or a digital compressor is used, and the choice of one is sufficient to realize capacity adjustment. Therefore, those skilled in the art have no motivation to use both frequency conversion motors and PWM valves, because this will Suspected of duplication of construction, leading to waste of resources
[0006] Because the inverter compressor and the digital compressor have their own advantages and disadvantages, users generally choose one of them according to their actual situation, and it is difficult to enjoy the advantages of both on one compressor at the same time.

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
  • Frequency conversion digital compressor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Inverter digital compressor such as figure 1 , which is a scroll compressor, including a PWM valve and a motor, and the motor is a variable frequency motor.

[0020] In traditional digital compressors, the operating frequency of the motor is not variable, so under low load, the operating frequency of the motor is higher, and a lower capacity output is achieved with a lower ratio of valve closing load time. Compared with digital compressors with frequency conversion, under low load, the PWM valve is triggered to adjust the output capacity, and the motor can run at a lower frequency. Therefore, the proportion of time for valve closing load is higher than that of traditional digital compressors, and the time for idling is higher than that of traditional digital compressors. The ratio is correspondingly lower, so losses are lower than in conventional digital compressors. Inverter digital compressor, under low load, the motor can be fixed in frequency, and the output capaci...

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

The invention relates to a gas compressor and can be applied to the field of air-conditioning refrigeration, chemical industry and places in which gas compression is required. The invention provides a frequency conversion digital compressor which comprises a pulse width modulation (PWM) valve and a motor, and is characterized in that the motor is a frequency conversion motor. Under a low load, the PWM valve is triggered to regulate the output capacity; under a high load, the frequency conversion of the motor is triggered to regulate the output capacity, and a closing valve load is fixed by the PWM valve. The motor is replaced by the frequency conversion motor on the basis that the PWM valve of the digital compressor is adopted, and the PWM valve or the frequency conversion motor can be selected to control the output capacity according to load change, so that following operations can be realized in the compressor: during outputting with low capacity, the loss is lower than that of the traditional digital compressor; the output capacity is lower than that of the traditional frequency conversion compressor even lower than that of the traditional digital compressor, and the digital compressor disclosed by the invention is simple in structure and reliable in performance; during outputting with high capacity, the loss is lower than that of the traditional digital compressor, and the frequency conversion digital compressor has the output capacity higher than that of the traditional digital compressor.

Description

technical field [0001] The invention relates to a gas compressor, which can be applied to fields requiring gas compression, such as air-conditioning and refrigeration, chemical industry and the like. Background technique [0002] In the field of air conditioning and refrigeration, in order to realize the adjustment of compressor capacity output, the original frequency conversion compressor adjusts the output capacity through the frequency conversion of the internal motor. The general output capacity adjustment range of the frequency conversion compressor is 30% to 130%. Later, a digital compressor was invented, which does not use motor frequency conversion, but uses a PWM valve to unload when the valve is opened, and load when the valve is closed. The higher the time ratio is, the larger the output capacity will be, and the output capacity will be 100% if the valve is kept closed. [0003] The advantage of the digital compressor is that due to the use of PWM valve pulse mod...

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 Applications(China)
IPC IPC(8): F04B49/06
Inventor 蔡湛文林成祥孙洪卫肖皓斌
Owner 广东西屋康达空调有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products