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Overload protection control method and device and air conditioner

A technology of overload protection and control method, applied in heating and ventilation control systems, control inputs related to system status, space heating and ventilation control inputs, etc. problems, to achieve the effect of increasing the capacity adjustment range, improving the service life and high flexibility

Active Publication Date: 2018-11-06
NINGBO AUX ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of this, the present invention aims to propose an overload protection control method, device and air conditioner to solve the problem that the operating frequency range of the compressor is reduced or the system pressure exceeds The problem of the allowable pressure of the compressor

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  • Overload protection control method and device and air conditioner
  • Overload protection control method and device and air conditioner
  • Overload protection control method and device and air conditioner

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Embodiment Construction

[0051] 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. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

[0052] The overload protection control method and de...

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Abstract

The invention provides an overload protection control method and device and an air conditioner. The overload protection control method comprises the steps that the middle temperature of a heat exchanger and the current operation frequency of a compressor are obtained, the overload protection temperature corresponding to the current operation frequency is determined according to an overload protection temperature curve equation established in advance, and a frequency control strategy of the compressor is determined according to the middle temperature of the heat exchanger, the overload protection temperature and the current operation frequency. Due to the fact that the overload protection temperature of the compressor can be adjusted dynamically according to the current operation frequencyof the compressor, the frequency operation range of the air conditioner compressor is broadened, the capacity adjustment range of the air conditioner is broadened, the air conditioner compressor can operate at any frequency with the system pressure being within the allowed pressure of the compressor, operation of the compressor at a low-frequency heavy load or a high-frequency heavy load is avoided, the service life of the compressor is prolonged, and the stability and reliability of a transducer are improved.

Description

technical field [0001] The invention relates to the technical field of acoustic wave recognition, in particular to an overload protection control method, device and air conditioner. Background technique [0002] Due to the change of the operating frequency of the inverter air conditioner, it is easy to cause the air conditioner compressor to operate under high pressure. In order to ensure that the operating pressure of the compressor is within a safe range, the inverter air conditioner needs to set the frequency operating range and overload protection. Generally, the overload protection controls the frequency operation of the compressor by setting the frequency limit, frequency reduction, and shutdown temperature. These protection temperature points are often fixed values, and according to the compressor specification provided by the compressor manufacturer, The allowable pressure is different at different frequencies. Using fixed value protection reduces the operating frequ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/30F24F11/62F24F140/00
CPCF24F11/30F24F11/62F24F2140/00
Inventor 郑根秦宪刘志财
Owner NINGBO AUX ELECTRIC
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