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An air conditioner and its overheating protection control method and system

A technology for overheating protection and air conditioners, applied in heating and ventilation control systems, space heating and ventilation control input, space heating and ventilation, etc., can solve problems such as compressor malfunction and failure to implement high-voltage protection, and achieve reduction effect of influence

Active Publication Date: 2019-10-01
QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide an overheat protection control method for an air conditioner, which solves the technical problem that the existing air conditioner performs overheat protection by detecting the indoor coil temperature, the outdoor fan and compressor malfunction or the high voltage protection cannot be implemented

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  • An air conditioner and its overheating protection control method and system
  • An air conditioner and its overheating protection control method and system

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Embodiment Construction

[0032] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0033] This embodiment proposes an overheat protection control method for an air conditioner, which judges whether the air conditioner is in a dirty state by the current of the whole machine, and controls the shutdown of the air conditioner when the air conditioner is in a dirty state; The relationship between the absolute value of the difference with the set value of the indoor coil and the set threshold determines whether the indoor coil temperature sensor fails, and when the indoor coil temperature sensor fails, the operating status of the fan and compressor is controlled by the current of the whole machine .

[0034] Specifically, the overheating protection control method of the air conditioner in this embodiment is as follows:

[0035] The indoor temperature sensor detects the indoor temperature, the o...

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Abstract

The invention discloses an air conditioner and an overheating protection control method and system of the air conditioner. Whether the air conditioner is in a filth blockage state or not is judged through the current of the air conditioner; whether an indoor coil pipe temperature sensor has a fault or not is judged through the current of the air conditioner and the relation between the absolute value of the difference value of the temperature value of an indoor coil pipe and the set value of the indoor coil pipe, and a set threshold value; and when the indoor coil pipe sensor has a fault, the operation states of a draught fan and a compressor are controlled through the current of the air conditioner. Thus, the two situations of filth blockage of the air conditioner and faults of the indoor coil pipe temperature sensor can be accurately distinguished, the air conditioner is controlled according to the situations and is subjected to accurate overheating protection, the overheating protection function can be achieved really, and it is ensured that when the indoor coil pipe temperature sensor has the faults, the air conditioner can normally operate, and the influence on the heating effect is reduced.

Description

technical field [0001] The invention belongs to the technical field of air conditioning, and in particular relates to an air conditioner and its overheat protection control method and system. Background technique [0002] Existing overheating protection of air conditioners adopts the method of detecting the temperature of the indoor coil, and when the temperature of the indoor coil is too high, the speed of the outdoor fan is reduced or the outdoor fan or compressor is stopped to protect the air conditioning system and avoid excessive system pressure. For example, when the temperature of the indoor unit coil is higher than 53°C, the outdoor fan turns from high speed to low speed; when the indoor unit coil temperature is higher than 56°C, the outdoor fan turns from low speed to shutdown; The machine shuts down; thereby reducing the system pressure and protecting the air conditioning system. The air conditioner has been simulated by relevant experiments before leaving the fac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/89F24F11/86F24F11/64F24F11/38F24F110/10F24F110/12
Inventor 马玉奇徐中华郭军港孟兆菊侯延慧赵承彬
Owner QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
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