Frequency conversion control device and control method for heat pump

A frequency conversion control, heat pump technology, applied in the direction of heat pumps, refrigerators, refrigeration components, etc., can solve the problems that it is difficult to ensure the control accuracy of the system, affect the heat exchange efficiency of the system, and the oscillation of the entire system, so as to achieve high control accuracy and reduce the number of adjustments , The effect of solving the oscillation problem

Active Publication Date: 2019-09-27
SHANDONG JIANZHU UNIV +1
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  • Abstract
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Problems solved by technology

[0004] 1. The heat pump system is a nonlinear system with large lag and strong coupling. Conventional control strategies often use constant control parameters to achieve system control, and it is difficult to guarantee the control accuracy of the system under various working conditions;
[0005] 2. The change of each control quantity of the control system can easily cause the oscillation of the whole system and affect the heat exchange efficiency of the system

Method used

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  • Frequency conversion control device and control method for heat pump
  • Frequency conversion control device and control method for heat pump
  • Frequency conversion control device and control method for heat pump

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Embodiment Construction

[0061] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.

[0062] It should be noted that the terminology used herein is only for describing specific embodiments, and is not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0063] Implementation example one

[0064] This embodiment discloses a frequency conversion control device for heat pumps, see...

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Abstract

The disclosure provides a frequency conversion control device and control method for a heat pump. The frequency conversion control device comprises a loop formed by an evaporator, a compressor, a condenser and an electronic expansion valve, wherein the electronic expansion valve is driven by a controller through a driver; the compressor is controlled by the controller to realize frequency conversion control through a frequency converter; the controller receives acquired temperature and pressure of a refrigerant at an evaporator outlet and indoor temperature; the controller realizes respective control of the frequency of a compressor frequency converter and the opening degree of the electronic expansion valve to the indoor temperature and the superheat degree of the refrigerant at the evaporator outlet based on data acquired in real time by adopting a bivariate adaptive fuzzy control strategy. According to the control device, the superheat degree of the refrigerant at the evaporator outlet is controlled by using the electronic expansion valve; and the indoor temperature is controlled by adjusting the operation frequency of the compressor.

Description

technical field [0001] The present disclosure relates to the technical field of frequency conversion heat pump control, in particular to a frequency conversion control device and control method for a heat pump. Background technique [0002] In recent years, with the rapid development of intelligent control theory and frequency conversion technology, intelligent control of heat pump devices has become a research hotspot in the field of HVAC energy conservation. Adopting scientific frequency conversion control strategy can not only improve the working efficiency of the heat pump, but also avoid excessive waste of resources to a certain extent. [0003] The current heat pump control cannot adjust the operating status of the heat pump system in real time with changes in ambient temperature, heat load demand and other working conditions, and the operating efficiency is low. There are two main reasons for this situation: [0004] 1. The heat pump system is a nonlinear system wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B49/02F25B30/02
CPCF25B30/02F25B49/02
Inventor 丁绪东姬晓娃段培永尹春杰邱钟
Owner SHANDONG JIANZHU UNIV
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