Air conditioner and high-temperature protecting method and device thereof

A technology for high temperature protection and air conditioners, applied in space heating and ventilation, heating methods, lighting and heating equipment, etc., can solve the problems affecting the reliability of air conditioners, the increase of condenser temperature and pressure, and exceeding the operating pressure range of the system, etc. problems, achieve reliable operation, reduce condensing pressure, and reduce operating frequency

Inactive Publication Date: 2019-06-28
GD MIDEA AIR-CONDITIONING EQUIP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In related technologies, the minimum operating voltage of the inverter air conditioner can reach 40V or even lower. The lower the voltage, the lower the speed of the outdoor fan. At the same frequency, the temperature and pressure of the condenser will increase significantly, which will exceed the operating pressure range of the system and affect Reliability of air conditioner operation

Method used

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  • Air conditioner and high-temperature protecting method and device thereof
  • Air conditioner and high-temperature protecting method and device thereof
  • Air conditioner and high-temperature protecting method and device thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] figure 1 It is a flow chart of the high temperature protection method of the air conditioner according to the first embodiment of the present application.

[0029] In one embodiment of this application, as figure 2 As shown, the air conditioner may include: an input power supply, an electric control system, a compressor, an outdoor heat exchanger, an indoor heat exchanger, an outdoor fan, an indoor fan and a throttling element. Among them, the outdoor fan is set corresponding to the outdoor heat exchanger, and the indoor fan is set corresponding to the indoor heat exchanger. One end of the compressor is connected to one end of the outdoor heat exchanger, and the other end of the outdoor heat exchanger is connected to one end of the throttling element. The other end of the element is connected to one end of the indoor heat exchanger, the other end of the indoor heat exchanger is connected to the other end of the compressor, and the electric control system is respective...

Embodiment 2

[0061] image 3 It is a schematic block diagram of the high temperature protection device of the air conditioner according to the second embodiment of the present application.

[0062] Such as image 3 As shown, the high temperature protection device for an air conditioner of the present application may include: an acquisition module 10 , an identification module 20 and a control module 30 .

[0063] Wherein, the acquiring module 10 is configured to acquire the current input voltage of the air conditioner. The recognition module 20 is configured to recognize that the air conditioner enters a low-voltage operating state according to the current input voltage. The control module 30 is configured to limit the operating frequency of the compressor in the air conditioner according to the current input voltage.

[0064] In one embodiment of the present application, the control module 30 limits the operating frequency of the compressor in the air conditioner according to the curre...

Embodiment 3

[0075] Based on the same idea, the embodiment of the present application also provides an air conditioner corresponding to the device in the second embodiment, see the third embodiment.

[0076] Figure 4 It is a schematic block diagram of the air conditioner in Embodiment 3 of the present application.

[0077] Such as Figure 4 As shown, the air conditioner 100 of the embodiment of the present application may include: the above-mentioned high temperature protection device 110 for the air conditioner.

[0078] The above-mentioned technical solutions in the embodiments of the present application have at least the following technical effects or advantages:

[0079] This application can limit the operating frequency of the compressor according to the current input voltage of the air conditioner and the current actual speed of the outdoor fan, so that when the input voltage is low, the system load can be reduced, and the condensation can be reduced by reducing the operating freq...

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Abstract

The invention discloses an air conditioner and a high-temperature protecting method and device thereof. The method includes the following steps that a current input voltage of the air conditioner is acquired, and according to the current input voltage, it is recognized that the air conditioner enters a low voltage running state; a current actual rotating speed of an outdoor draught fan in the airconditioner is acquired; and according to the current input voltage and the current actual rotating speed, the running frequency of a compressor in the air conditioner is limited. According to the high-temperature protecting method, according to the current input voltage of the air conditioner and the current actual rotating speed of the outdoor draught fan, the running frequency of the compressoris limited, and therefore when the input voltage is low, the system load is reduced, by lowering the running frequency of the compressor, the condensing pressure is lowered, and reliable running of the system is guaranteed.

Description

technical field [0001] The present application relates to the technical field of air conditioning, in particular to an air conditioner and its high temperature protection method and device. Background technique [0002] At present, the minimum operating voltage of the inverter air conditioner can reach 150V, the wind speed of the outdoor fan is relatively high, the condensation temperature is relatively low, the condensation pressure of the outdoor heat exchanger is also low, and the system reliability is high. [0003] In related technologies, the minimum operating voltage of the inverter air conditioner can reach 40V or even lower. The lower the voltage, the lower the speed of the outdoor fan. At the same frequency, the temperature and pressure of the condenser will increase significantly, which will exceed the operating pressure range of the system and affect The reliability of air conditioner operation. Contents of the invention [0004] The embodiment of the present ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/32F24F11/64F24F11/65F24F11/86F24F11/88
Inventor 席战利齐虹杰
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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