Heat pump control method and device
A technology of a control device and a control method, which is applied in the direction of heat pumps, refrigerators, refrigeration components, etc., can solve the problems of increased standby power consumption of heat pumps and poor user experience, and achieve the effect of reducing standby power consumption and improving user experience
Active Publication Date: 2020-12-08
QINGDAO HISENSE HITACHI AIR CONDITIONING SYST
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Problems solved by technology
[0006] The invention provides a control method and device for a heat pump, which solves the problem of increased standby power consumption of the heat pump and poor user experience when the oil heating belt is used to reduce the intake of liquid refrigerant by the compressor
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[0029] 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. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0030] figure 2 A schematic structural diagram of a heat pump to which the embodiment of the present invention can be applied is provided for the embodiment of the present invention. like figure 2 As shown, the heat pump may include: a gas-liquid separator 11 , a compressor 12 , an outdoor-side heat exchanger 13 and a second electronic expansion valve 14 .
[0031] Wherein, the gas-liquid separator 11 may include a cylinder, an inlet pipeline and an outlet...
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The embodiment of the present invention discloses a control method and device for a heat pump, which relates to the field of household appliances, and solves the problem that the standby power consumption of the heat pump increases and the user experience is not good when the compressor is used to reduce the suction of liquid refrigerant by using the heating oil heating belt method. . The specific scheme is: applied to the heat pump, the heat pump includes a gas-liquid separator and a compressor, the gas-liquid separator includes a cylinder, an inlet pipeline and an outlet pipeline, and the outlet pipeline includes an internal pipeline inside the cylinder and a pipe protruding from the cylinder An external pipeline, the external pipeline is connected to the inlet of the compressor, and at least one liquid return pipeline is connected between the external pipeline and the cylinder, and an electric control valve is installed on each liquid return pipeline, and the control device of the heat pump is in the When the heat pump is stopped, at least one electric control valve is controlled to be closed, and after the heat pump is restarted, at least one electric control valve is controlled to be opened when it is determined that the condition for opening at least one electric control valve is met. The embodiment of the present invention is used in the process of starting the heat pump.
Description
technical field [0001] Embodiments of the present invention relate to the field of household appliances, and in particular to a control method and device for a heat pump. Background technique [0002] A heat pump is a device that obtains low-level heat energy from natural air, water or soil, and provides high-level heat energy that can be used by people through electrical work. figure 1 A structural schematic diagram of a heat pump provided in the prior art, such as figure 1 As shown, the heat pump may include: a gas-liquid separator, a compressor, an outdoor heat exchanger, and the like. [0003] When the heat pump stops when the outdoor temperature is low, a large amount of liquid refrigerant will accumulate inside the cylinder of the gas-liquid separator, and the liquid refrigerant will enter the outlet pipe through the oil return hole at the bottom of the U-shaped outlet pipe, making the outlet pipe The suction line to the compressor contains liquid refrigerant. At th...
Claims
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IPC IPC(8): F25B30/06F25B43/00F25B49/02
CPCF25B30/06F25B43/00F25B49/02F25B2400/23F25B2600/25
Inventor 王远鹏周敏曹法立车家强张永雷贾昌磊
Owner QINGDAO HISENSE HITACHI AIR CONDITIONING SYST