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Compressor control method, air conditioner and storage medium

A control method and compressor technology, applied in pump control, machine/engine, mechanical equipment, etc., can solve the problems affecting compressor life and operational reliability, complex control methods, etc., to improve life, improve operational reliability, The effect of avoiding damage

Active Publication Date: 2019-12-20
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the compressor is running, only simple pressure limits such as high-pressure alarm and low-pressure alarm are given, and the control method is relatively complicated. The compressor may operate outside the normal operating pressure range due to changes in the affected factors. When operating outside the normal operating pressure range, it will seriously affect the life and operational reliability of the compressor

Method used

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  • Compressor control method, air conditioner and storage medium
  • Compressor control method, air conditioner and storage medium
  • Compressor control method, air conditioner and storage medium

Examples

Experimental program
Comparison scheme
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no. 1 example

[0139] Further, refer to Figure 7 , the compressor control method based on the above-mentioned embodiment, the first embodiment of step S32, including:

[0140] S321: When the exhaust pressure P k and suction pressure P o When the corresponding pressure coordinate point is located in the second function area, obtain the current operating frequency of the compressor;

[0141] In this example, further reference Figure 4 , when the discharge pressure P of the compressor is monitored k and suction pressure P o The corresponding pressure coordinate point (P o , P k ) is located in the second function area 2, that is, the exhaust pressure P at this time k and suction pressure P o The corresponding function y=f(x) satisfies: f 1 (x)-△P1 (x), f 2 (x)-△P2 (x), f 3 (x)3 (x)+△P, P kmin kmin +△P,P kmax -△Pkmax ,P omin omax . In order to accurately control the compressor to limit the frequency up or down, it is necessary to further obtain the current running frequency of t...

no. 2 example

[0145] Further, refer to Figure 8 , the control method of the compressor based on the above-mentioned embodiment, the second embodiment of step S32 includes:

[0146] S324: When the exhaust pressure P k and suction pressure P o When the corresponding pressure coordinate point is located in the second function area, determine the position of the pressure coordinate point in the second function area;

[0147] In this example, further reference Figure 4 , when the discharge pressure P of the compressor is monitored k and suction pressure P o The corresponding pressure coordinate point (P o , P k ) is located in the second function area, that is, the exhaust pressure P at this time k and suction pressure P o The corresponding function y=f(x) satisfies: f 1 (x)-△P1 (x), f 2 (x)-△P2 (x), f 3 (x)3 (x)+△P, P kmin kmin +△P,P kmax -△Pkmax ,P omin omax . In order to accurately control the compressor to limit the frequency up or down, it is necessary to further determine ...

no. 3 example

[0172] Further, refer to Figure 11 , the control method of the compressor based on the above-mentioned embodiment, the third embodiment of step S33, including:

[0173] S337: When the exhaust pressure P k and suction pressure P o When the corresponding pressure coordinate point is located in the fifth function area outside the second function area, it is judged whether the current operating frequency of the compressor is less than the preset maximum frequency;

[0174] In this embodiment, in this embodiment, further refer to Figure 4 , when the discharge pressure P of the compressor is monitored k and suction pressure P o The corresponding pressure coordinate point (P o , P k ) is located in the fifth function area, that is, the exhaust pressure P at this time k and suction pressure P o The corresponding function y=f(x), satisfying: ykmin , x∈[P omin , f 3 -1 (P kmin) )), y3 (x), x∈[f 3 -1 (P kmin ), P omax ), y2 (P omax ), x∈[P omax , ∞). In order to accu...

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Abstract

The invention discloses a control method of a compressor. After the compressor is started by a first preset time length, an exhaust pressure and an intake pressure of the compressor are monitored to judge if the detected exhaust pressure and intake pressure are within corresponding preset ranges or not; and when the exhaust pressure and the intake pressure are beyond the corresponding preset ranges, an operation frequency of the compressor is adjusted to limit the exhaust pressure and the intake pressure in the corresponding preset ranges, so that the compressor can normally operate in a normal operation pressure range. The invention further discloses an air conditioner and a storage medium. The situation that a compressor operates beyond the normal operation pressure range for a long timeand consequently the compressor is damaged is avoided; the life of the compressor is prolonged; and the operation reliability of the compressor and the air conditioner is improved.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a compressor control method, an air conditioner and a storage medium. Background technique [0002] Precision air conditioners need to work uninterrupted 24 hours a day. The core of the air conditioner is the compressor. The necessary condition to ensure the long-term uninterrupted operation of the precision air conditioner is to ensure that the compressor operates within the normal working range. [0003] When the compressor leaves the factory, it will be accompanied by a corresponding compressor specification book, which includes a map of the normal operating pressure range of the compressor to ensure that the compressor operates within the normal operating pressure range. However, when the compressor is running, only simple pressure limits such as high-pressure alarm and low-pressure alarm are given, and the control method is relatively complicated. The compressor may...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B49/06
CPCF04B49/06
Inventor 陈乾
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD