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Frequency regulating method and device for compressor

A technology of compressor frequency and adjustment method, applied in the field of frequency converters, can solve problems such as compressor regulation speed matching, frequency changer power mutation, and unstable temperature regulation.

Active Publication Date: 2017-04-05
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the prior art, when the indoor temperature is adjusted, the power of the frequency converter will change suddenly, and the adjustment speed of the compressor cannot match the power of the frequency converter in time, which has hysteresis, resulting in unstable temperature regulation.

Method used

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  • Frequency regulating method and device for compressor
  • Frequency regulating method and device for compressor
  • Frequency regulating method and device for compressor

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Embodiment 1

[0020] figure 1 It is a flow chart of a compressor adjustment method provided by Embodiment 1 of the present invention. This method is applicable to the temperature control of inverter air conditioners. The method is executed by the compressor adjustment device provided by the embodiment of the present invention. The device can use software and / or hardware, the device can be integrated into refrigeration equipment, such as an air conditioner. Such as figure 1 shown, including:

[0021] S101. Obtain an outlet air temperature when the compressor is working normally, and calculate an ideal output power of the frequency converter when the outlet air temperature is in a normal range.

[0022] An air conditioner is a device that can regulate and control parameters such as temperature, humidity, cleanliness, and circulation velocity of the air in an indoor environment. In this embodiment, the normal operation of the compressor refers to the working state of the compressor after th...

Embodiment 2

[0038] figure 2 It is a flowchart of a compressor adjustment method provided by Embodiment 2 of the present invention. This embodiment is optimized on the basis of the above embodiments, and provides a preferred specific method for calculating the ideal output power of the frequency converter, specifically: real-time Detecting the input current value and voltage value of the frequency converter, calculating the power value of the frequency converter; calculating the ideal output power of the frequency converter according to the relationship between the ideal working efficiency ratio and the power value.

[0039] Such as figure 2 As shown, correspondingly, the method of the embodiment of the present invention includes:

[0040] S201. Acquire the outlet air temperature when the compressor is working normally.

[0041] S202. When the outlet air temperature is within the normal temperature range, detect the input current value and voltage value of the frequency converter in re...

Embodiment 3

[0054] image 3 It is a flowchart of a compressor adjustment method provided by Embodiment 3 of the present invention. This embodiment is optimized on the basis of the above embodiments, and provides a preferred process of initializing the frequency of the compressor before obtaining the outlet air temperature , specifically: determining the initial frequency of the compressor by comparing the current ambient temperature value with the preset temperature value, and maintaining the initial frequency until the outlet air temperature meets the preset condition. Such as image 3 As shown, the corresponding method of this embodiment includes:

[0055] S301. Determine an initial frequency of the compressor by comparing a current ambient temperature value with a preset temperature value, and maintain the initial frequency until the outlet air temperature meets a preset condition.

[0056] Specifically, in refrigeration equipment, the output temperature has a positive correlation wi...

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Abstract

The embodiment of the invention discloses a frequency regulating method and device for a compressor. The method comprises the following steps of: obtaining an outlet air temperature when the compressor normally works, and calculating ideal output power of a frequency converter when the outlet air temperature is within a preset range; and calculating ideal frequency according to a relationship between the ideal output power of the frequency converter and the frequency of the frequency converter, and regulating frequency of the frequency converter to ideal frequency. According to the embodiment of the invention, when the outlet air temperature is within the normal range, frequency of the compressor is timey regulated according to output power of the frequency converter, so that a response rate of the compressor is increased, and the temperature changing amplitude is reduced.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of frequency converters, and in particular to a method and device for adjusting frequency of a compressor. Background technique [0002] In view of the current demand for energy saving and emission reduction, many electric and electrical equipment are developing towards low power consumption and high efficiency. Especially, under the situation that people have higher and higher requirements on the temperature, humidity and cleanliness of the indoor environment, the requirements on energy saving and high efficiency of air conditioners are getting higher and higher. [0003] As the heart of the air-conditioning and refrigeration system, the compressor can compress the low-temperature, low-pressure saturated gas refrigerant into a high-temperature and high-pressure gaseous refrigerant, and then turn it into a low-temperature, low-pressure saturated gas refrigerant through step-down and thr...

Claims

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Application Information

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IPC IPC(8): F24F11/00F25B49/02
CPCF24F11/30F24F11/62F24F11/64F24F11/70F24F2110/10F25B49/022F25B2600/02
Inventor 宋鹏谷月明朱新王传华李桂强曾凡卓姚鸿海王晓红孟红武袁占彪
Owner GREE ELECTRIC APPLIANCES INC
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