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Unit control method, device and system

A unit control and unit technology, applied in heating and ventilation control systems, heating and ventilation safety systems, heating methods, etc., can solve the problems of unit shutdown, energy efficiency reduction, damage, etc., to protect the unit, improve energy efficiency, and reduce risks. Effect

Active Publication Date: 2018-12-11
GREE ELECTRIC APPLIANCES INC
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  • Description
  • Claims
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Problems solved by technology

[0004] Embodiments of the present invention provide a unit control method, control device, and control system to solve the problems in the prior art that when the refrigerant filling amount in the unit is in an abnormal state, it is easy to cause the unit to shut down, reduce energy efficiency or even damage the unit

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  • Unit control method, device and system

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Embodiment Construction

[0042] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention.

[0043] In the following description, use of suffixes such as 'module', 'part' or 'unit' for denoting elements is only for facilitating description of the present invention and has no specific meaning by itself. Therefore, 'module', 'part' or 'unit' may be used in combination.

[0044] In order to solve the problems in the prior art that when the refrigerant filling amount of the unit is in an abnormal state, it is easy to cause the unit to shut down, reduce energy efficiency or even damage the unit. An embodiment of the present invention provides a unit control method, such as figure 1 As shown, the method includes:

[0045] Step S101, obtaining the operating paramete...

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Abstract

The invention discloses a unit control method, device and system, wherein the unit control method includes: acquiring working parameters of a unit; judging whether coolant injection quantity of the unit is abnormal according to the working parameters; if yes, correspondingly adjusting compressor operation frequency and / or fan frequency according to the abnormal state of the coolant injection quantity. The unit control method, device and system have the advantages that when the coolant injection quantity of the unit is abnormal, namely the requirement of the unit is not met, compressor operation frequency and / or fan frequency can be adjusted to change coolant circulation quantity of the unit; the coolant circulation quantity of a system is closely linked with stable operation of a unit, andtherefore, the unit can operate stably, can gain higher energy efficiency and can be protected; unit stopping due to frequency triggering of a failure protection mode can be avoided.

Description

technical field [0001] The present invention relates to the field of unit technology, in particular to a unit control method, control device and control system. Background technique [0002] During the after-sales process of the heat pump hot water unit, sometimes the refrigerant leaks, which triggers the fail-safe mode of the unit, causing the unit to shut down, and in severe cases, it will lead to the paralysis of the project where the unit is located. And after the unit is repaired, it is often necessary to determine the amount of refrigerant charged according to the system pressure value or rated current value marked on the unit nameplate. But the rated current value is determined under the specific working conditions before the unit leaves the factory. The operating condition of the unit after leaving the factory is often far from the specific working condition, resulting in a deviation between the amount of refrigerant injected and the actual demand of the unit, which...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/32F24F11/64F24F11/65F24F11/83F24F11/88
CPCF24F11/32F24F11/64F24F11/65F24F11/83F24F11/88
Inventor 邓志扬周亚董昊黎珍张勇杨文军熊月忠周宏宇袁明征邓伟彬
Owner GREE ELECTRIC APPLIANCES INC
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