Heating electronic expansion valve control method

A technology of electronic expansion valve and control method, applied in heating mode, heating and ventilation control system, refrigerator, etc., can solve the problem of difficulty in reliable operation of the whole machine, so as to improve the service life, ensure normal operation, and ensure reliability Effect

Active Publication Date: 2019-03-05
NINGBO AUX ELECTRIC
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, during the operation of the air conditioner, if only the suction superheat of the outdoor heat exchanger is controlled or the exhaust superheat is controlled, it is difficult to ensure the reliable operation of the whole unit.

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  • Heating electronic expansion valve control method

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Embodiment Construction

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0041] Such as figure 1 As shown in the figure, it is a schematic diagram of the heating control system structure of an inverter air conditioner with one drive and three units. It is assumed that the capacity of the outdoor unit is 10HP, the capacity of the first indoor unit is 0.8HP, and the total capacity of all indoor units is equal to 10HP. A suction temperature sensor 20 is set on the input pipeline of the gas-liquid separator 1 of the compressor 2 to det...

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Abstract

The invention discloses a heating electronic expansion valve control method. The opening degree of an expansion valve is controlled by detecting exhaust air superheat degree TdSH and suction air superheat degree SH_HEATING; when the exhaust air superheat degree is increased gradually along with the time and the temperature, the electronic expansion valve is opened in advance to control the continuous raising trend of the temperature of exhaust air so as to control the phenomenon that the exhaust air superheat degree is increased gradually; and when the exhaust air superheat degree presents a decreasing trend along with the time, the opening degree of the electronic expansion valve is reduced in advance through a calculation formula so as to keep the exhaust air superheat degree running ina safety range. According to the heating electronic expansion valve control method, the suction air superheat degree and the exhaust air superheat degree are simultaneously controlled through one part, in such way, the continuous heat supply of an indoor unit is ensured, and the reliability of an outdoor compressor can also be ensured, so that normal operation of the overall system is ensured, andthe service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of air conditioning control, in particular to a method for controlling a heating electronic expansion valve. Background technique [0002] An outdoor unit of an inverter air conditioner can drive multiple indoor units. When running, one indoor unit can run, or multiple indoor units can run simultaneously. The inverter air conditioner includes an indoor unit control system and an outdoor control system. The indoor unit control system is responsible for reading the temperature sensor of the actual temperature of the indoor air-conditioned room. The outdoor unit control system is responsible for reading the data of the temperature sensor and sending the information to the outdoor control system. Drag multi-frequency conversion control, heating mode electronic expansion valve is controlled according to suction superheat (compressor suction temperature - low pressure saturation temperature for drinking), low temp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00F25B49/02F25B41/06F25B41/34
CPCF25B49/02F25B2600/2513F25B41/34F25B41/31Y02B30/70
Inventor 侯丽峰秦宪赵攀
Owner NINGBO AUX ELECTRIC
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