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Air supply and enthalpy increase control method for air conditioner

A technology of supplementing air to increase enthalpy and control methods, applied in heating and ventilation control systems, applications, heating methods, etc., can solve problems such as low compressor exhaust temperature, poor opening control method, and low exhaust superheat

Active Publication Date: 2021-10-01
QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned problems in the prior art, that is, to solve the poor opening control method of the electronic expansion valve of the economizer of the existing air conditioner, which may easily cause the compressor To solve the problems of low exhaust temperature and low exhaust superheat, the present invention provides a method for air supplement enthalpy increase control for an air conditioner. The outdoor unit of the air conditioner includes an economizer and a compressor. The compressor An enthalpy-increasing port is provided on the machine, an economizer electronic expansion valve is arranged on the inlet section of the auxiliary road of the economizer, and an outlet section of the auxiliary road of the economizer is connected with the enthalpy-increasing port, and the air-supplementing enthalpy-increasing control method Including: obtaining the inlet temperature and outlet temperature of the auxiliary circuit of the economizer, and the suction pressure, discharge temperature, discharge pressure and the saturation temperature corresponding to the discharge pressure of the compressor; pressure, the exhaust temperature, the exhaust pressure and the saturation temperature to determine the optimum degree of superheat; determine the actual degree of superheat according to the inlet temperature and the outlet temperature; determine the actual degree of superheat according to the optimum degree of superheat and the actual superheat, controls the opening of the economizer electronic expansion valve

Method used

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  • Air supply and enthalpy increase control method for air conditioner

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Embodiment Construction

[0026] Preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present invention, and are not intended to limit the protection scope of the present invention. Those skilled in the art can make adjustments as needed so as to adapt to specific applications. For example, the air conditioner described in this preferred embodiment may be a one-to-one air conditioner, or a one-to-many air conditioner, which is not limiting, and technicians can set it according to actual usage requirements.

[0027] It should be noted that, in the description of this preferred embodiment, terms such as "upper", "lower", "inner", "outer" and other indicated directions or positional relationships are based on the directions or positional relationships shown in the drawings , which is only for convenience of description, but do...

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Abstract

The invention belongs to the technical field of air conditioners, and particularly relates to an air supply and enthalpy increase control method for an air conditioner. The problems that the exhaust temperature of a compressor is too low and the exhaust superheat degree is too low due to the fact that the opening control mode of an economizer electronic expansion valve of an existing air conditioner is not good are solved. The air supply and enthalpy increase control method comprises the steps that the inlet temperature and the outlet temperature of an auxiliary path of an economizer, the suction pressure, the exhaust temperature and the exhaust pressure of a compressor and the saturation temperature corresponding to the exhaust pressure are obtained; the optimal superheat degree is determined according to the suction pressure, the exhaust temperature, the exhaust pressure and the saturation temperature; the actual superheat degree is determined according to the inlet temperature and the outlet temperature; and the opening degree of an electronic expansion valve of the economizer is controlled according to the optimal superheat degree and the actual superheat degree. Based on the control mode, the actual superheat degree of the economizer can continuously approach the optimal superheat degree, so that the enthalpy increasing effect is effectively improved while the exhaust temperature and the exhaust superheat degree are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of air conditioning, and in particular relates to a method for controlling air supplementation and enthalpy increase for an air conditioner. Background technique [0002] With the increasing popularity of air conditioners, users have put forward higher and higher requirements for the comprehensive performance of air conditioners, especially for the heat exchange efficiency of air conditioners, which is a problem that many users attach great importance to. For this reason, many existing air conditioners have begun to add economizers in order to effectively improve the heat exchange efficiency of the air conditioner. When the enthalpy-increasing compressor of the existing air conditioner starts the enthalpy-increasing function, it usually adjusts the opening degree of the electronic expansion valve of the economizer by controlling the superheat degree of the auxiliary circuit of the economizer, so as to ensure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/30F24F11/64F24F11/84F24F11/88F24F140/12F24F140/20
CPCF24F11/30F24F11/64F24F11/84F24F11/88F24F2140/12F24F2140/20
Inventor 周顺来侯庆渠时斌王锋潘德栋
Owner QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD
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