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Compressor rotating speed control method based on VCU control

A technology of compressor speed and control method, applied in heating/cooling equipment, air handling equipment, transportation and packaging, etc., can solve problems such as large temperature difference in cockpit, loud noise, and frequent compressor startup.

Pending Publication Date: 2021-03-19
CHERY COMML VEHICLE ANHUI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a compressor speed control method based on VCU control, which is mainly used to solve the defects in the prior art such as frequent start-up of the compressor, large noise, and large temperature difference in the cockpit, so that the compression The rotation speed of the engine is more reasonable and can make the temperature fluctuation of the cockpit smaller, improving the user's temperature experience

Method used

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Experimental program
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Embodiment Construction

[0015] The specific implementation manner of the present invention will be further described in detail through the description of the best embodiment below.

[0016] In this application, after the air conditioner is turned on, the VCU periodically collects parameters and dynamically adjusts the speed of the compressor according to the parameters, so as to reduce the number of compressor startups and ensure proper temperature adjustment without causing excessive temperature fluctuations. Specifically include:

[0017] The VCU periodically collects the compressor body temperature T 1 With the real-time speed N of the compressor, the driver adjusts the desired indoor temperature T 2 , to detect the real-time temperature T of the cockpit 3 and indoor desired temperature T 2 Difference ΔT 1 , when the air conditioner is turned on, the VCU controls the compressor at a fixed speed N 1 Turn it on, and after 30s, it will be judged that if the compressor is △T 1 ≥5°C, rapid cooling...

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PUM

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Abstract

The invention discloses a compressor rotating speed control method based on VCU control, which comprises the following steps: when an air conditioner is started, the VCU controls a compressor to be started at a fixed rotating speed N1, the VCU periodically collects the temperature T1 of a compressor body, the real-time rotating speed N of the compressor, the indoor expected temperature T2 adjustedby a driver, and detects the difference deltaT1 between the real-time temperature T3 of a cockpit and the indoor expected temperature T2; the deltat1 at the moment is calculated according to the temperature data of the VCU collection moment before each period after the air conditioner is started, and if the deltaT1 is larger than or equal to a set temperature threshold value, a rapid cooling strategy is started; and if the deltaT1 is smaller than a set temperature threshold value at the moment, a temperature equalization action strategy is entered at the moment. The rotating speed of the compressor is more reasonable, the temperature fluctuation of the cockpit is small, and the temperature experience of a user is improved.

Description

technical field [0001] The invention relates to the field of compressor control, in particular to a compressor speed control method based on VCU control. Background technique [0002] The existing method of controlling the speed of the electric compressor of the automobile air conditioner is generally to set the compressor to work at a fixed speed, stop the compressor when the temperature of the compressor reaches the lower limit, and start the compression again when the temperature of the compressor rises to a certain temperature. machine. This control method makes the temperature drop in the car slow, and the compressor may be turned off and on frequently during control. If the fixed speed is set too high, it will generate a lot of noise, which not only affects the service life of the compressor, but also affects the car. The comfort of the interior; starting the compressor when the temperature is high will also cause large fluctuations in the overall temperature of the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60H1/00B60H1/32
CPCB60H1/00735B60H1/00878B60H1/3205
Inventor 汪洋项南军刘昭才
Owner CHERY COMML VEHICLE ANHUI