Outdoor for control method for heat pump type air conditioner
A technology of air conditioning and control methods, applied in heating methods, heating and ventilation control systems, household heating, etc., which can solve the problem that the temperature condition drops to a very low level, the heating operation cannot be continuously performed, and the heat exchange of outdoor heat exchangers is reduced. Efficiency and other issues, to achieve the effect of a simple method
Inactive Publication Date: 2009-01-28
LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD
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[0006] However, the conventional control method during heating operation is to control according to the pressure state detected by the compressor state. Therefore, when the heating operation is performed under the condition of low outdoor temperature, the temperature condition of the outdoor heat exchanger drops to a very low level. As a result, even when the defrosting operation is performed within a certain period of time, the outdoor heat exchanger is still exchanging heat without defrosting, which reduces the heat exchange efficiency of the outdoor heat exchanger and discharges cold air to the user.
[0007] Moreover, the prior art heat pump air-conditioning device turns to the defrosting operation at a low temperature, so that the heating operation cannot be continuously performed.
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[0017] The outdoor fan control method of the heat pump air-conditioning device of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments:
[0018] Such as image 3 As shown, the outdoor fan control device of the heat pump air conditioner of the present invention includes a cooling / heating operation switch 21 for selecting cooling or heating of the heat pump air conditioner, and an indoor piping temperature for detecting the piping temperature of the indoor heat exchanger. The sensor 22 compares the temperature detected by the indoor pipe temperature sensor 22 with a reference temperature, and controls the compressor 23, the four-way valve 24, the outdoor fan motor 25, and the control unit 27 of the indoor fan motor 26 to drive signals.
[0019] The control unit 27 compares the piping temperature of the indoor unit detected by the indoor piping temperature sensor 22 with the outdoor fan drive temper...
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The present inventio discloses a method for controlling outdoor fan of heat pump type air-conditioning equipment. Said method includes: outdoor fan drive temp. setting stage, according indoor tube temp. of indoor machine setting the outdoor fan drive temp. for controlling drive of outdoor fan; detection temp. comparison stage, comparing the outdoor fan drive temp. set in the reference temp. setting stage with stop temp. to produce and output outdoor fan drive signal; outdoor fan drive stage, according to outdoor fan drive signal driving / stopping outdoor fan. Said inventio also includes a temp. sensor for detecting indoor tube temp. to control the drive of outdoor fan.
Description
technical field [0001] The invention relates to an air conditioning device, especially an outdoor fan control method of a heat pump type air conditioning device. Background technique [0002] Generally, a heat pump type air conditioner is equipped with an evaporator, a condenser, etc., and the refrigerant used for cooling is used for heating after the reverse flow of the refrigeration cycle. [0003] Such as figure 1 As shown, the structure of the heat pump air conditioner in the prior art is: the compressor 11 connected to the power supply and compressed refrigerant is connected to the four-way valve 12, one side of the four-way valve 12 is connected to the outdoor heat exchanger 13, and the outdoor heat exchanger 13 is connected with an expansion valve 14, and the expansion valve is connected with an indoor heat exchanger 15, and the indoor heat exchanger 15 is connected with the other side of the four-way valve 12, and the other side of the four-way valve is connected wi...
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IPC IPC(8): F24F11/02
Inventor 李英树
Owner LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD