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Power source control method of for pre-heating of variable frequency compressor

A frequency conversion compressor and power control technology, which is applied to heating methods, heating and ventilation control systems, household heating, etc., can solve the problems of preheating function failure, rough conditions for judging whether to heat up, waste of power resources, etc., to avoid Effects of waste, easy control method, and precise judgment conditions

Active Publication Date: 2018-07-13
AUX AIR CONDITIONING LTD BY SHARE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The application number is 201310029091.7, the publication number is CN 103089598 A, and the patent document titled "Control Method of Air Conditioning Compressor" discloses a control method for preheating the air conditioning compressor. However, the method judges whether it generates heat during use The conditions are too rough, and it is impossible to efficiently and accurately determine whether it is necessary to turn on the power to generate heat, resulting in a waste of some power resources. Moreover, the preheating control is based on the prerequisite that the outdoor unit must have power. For energy-saving needs, when the user shuts down, the indoor unit Cut off the power supply of the external machine to save energy, and the preheating function will be invalid after the external machine has no power

Method used

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  • Power source control method of for pre-heating of variable frequency compressor
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Examples

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Embodiment 1

[0044] Example 1, such as Figure 2~3 As shown, the embodiment of the present invention provides a power supply control method for inverter compressor preheating, and the specific operation steps are as follows:

[0045] Step (1), after the air conditioner is powered on, the air conditioner starts to run;

[0046] Step (2), the indoor unit control relay is closed, the indoor unit supplies power to the outdoor unit, and the power supply time is Ft;

[0047] Step (3) Judging whether the outdoor ambient temperature meets the preheating condition, the judging condition is T outer ring < TEMP, if yes, go to step (4), if not, go to step (7);

[0048] Step (4), judging whether the temperature of the outdoor coil meets the preheating condition, the judging condition is Touter disk <(TEMP+∆t), if yes, go to step (5), if not, go to step (7);

[0049] Wherein, the power supply duration Ft is the default power supply duration of the indoor unit to the outdoor unit, and the power supply ...

Embodiment 2

[0062] Embodiment 2. However, during the use of the air conditioner, the air conditioner may only be in the standby state. After the air conditioner receives the operation command, the indoor unit first judges whether it is the first power-on, and if so, enters the Step (2) in Embodiment 1 performs subsequent selection and judgment. If it is not the first power-on, the indoor unit judges whether the standby time is greater than T2. ​​If the standby time is greater than T2, enter step (2) in Embodiment 1 and perform subsequent Select judgment; if the standby time is not greater than T2, then judge whether the indoor unit has received the compulsory power supply demand from the outdoor unit, if the indoor unit has always received the compulsory power supply demand from the outdoor unit, then supply power to the outdoor unit all the time, and enter the steps in embodiment 1 (2) And make subsequent selection judgments; if the indoor unit does not receive the compulsory power supply...

Embodiment 3

[0063] Embodiment 3, as a complete embodiment of the present invention, includes both power-on for the first time and power-on after standby, and the specific steps are as follows:

[0064] Step (1), after the air conditioner is turned on, first judge whether the air conditioner is powered for the first time; if so, go to step (4); if not, go to step (2);

[0065] Step (2), judge whether the standby time of the air conditioner is greater than T2, if so, go to step (4), if not, go to step (3);

[0066] Step (3), judging whether the indoor unit has received the mandatory power supply demand from the outdoor unit, if so, proceed to step (4), if not, do not send the mandatory power supply communication code to the indoor unit and proceed to step (12);

[0067] In step (4), the control relay of the indoor unit is first closed, and power is supplied to the outdoor unit for a duration of Ft. After the power supply is completed, go to step (5);

[0068] Step (5), judging whether the ...

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Abstract

The invention provides a power source control method of for pre-heating of a variable frequency compressor so as to achieve the effect that the coil preheating function of the variable frequency compressor can be normally started when an indoor unit cuts off a power source of an outdoor unit after an air conditioner is in a standby state. According to the power source control method, by judging the outdoor environment temperature and the outdoor coil pipe temperature, whether pre-heating needs to be conducted or not is judged, then the heating duration T1 and the cooling duration T2 are obtained through a development test, thus whether the indoor unit supplies power to the outdoor unit or not is judged accurately, and a coil of the variable frequency compressor is preheated. According to the power source control method, the technical problem that after the air conditioner is in the standby state, the coil pre-heating function loses efficacy is solved, the method is easy to control, accurate and efficient.

Description

technical field [0001] The invention relates to the technical field of air conditioner compressor control, in particular to a power supply control method for frequency conversion compressor preheating. Background technique [0002] There is refrigerant and lubricating oil in the cavity of the air conditioner compressor. The lubricating oil lubricates the soaked bearings and rotating mechanisms. When the outdoor temperature is low, the viscosity of the lubricating oil becomes larger and the lubricating function is greatly reduced. The air conditioner compressor often fails to start, and even damages the air conditioner compressor. For this reason, some air conditioner compressors are used to control the heating of the windings of the air conditioner compressor, so as to ensure the smooth start of the air conditioner compressor. [0003] Inverter compressor control In order to ensure the start-up effect at low temperature, there is generally a compressor winding pre-heating c...

Claims

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Application Information

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IPC IPC(8): F24F11/00
Inventor 黄宁郑丹露
Owner AUX AIR CONDITIONING LTD BY SHARE LTD
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