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Low-temperature refrigeration control method, device and system for air conditioner unit

A technology for air conditioners and units, which is applied in heating and ventilation control systems, heating and ventilation safety systems, space heating and ventilation, etc. exhaust pressure, meeting reliability requirements, and ensuring reliability

Active Publication Date: 2015-11-25
GREE ELECTRIC APPLIANCES INC
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  • Application Information

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Problems solved by technology

[0007] Embodiments of the present invention provide a low-temperature refrigeration control method, device, and system for an air conditioner unit to at least solve the problem of low-temperature refrigeration operation of the air-conditioner unit in the prior art due to low exhaust pressure of the unit. The operation with liquid causes the technical problem of low operational reliability of the unit

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  • Low-temperature refrigeration control method, device and system for air conditioner unit

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Embodiment Construction

[0018] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0019] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate ...

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Abstract

The invention discloses a low-temperature refrigeration control method, device and system for an air conditioner unit. The method comprises the following steps: when the air conditioner unit is started to enter a running state of low-temperature refrigeration, detecting the opening and closing state of an exhaust pressure switch of the unit; if the exhaust pressure switch is in a closing state, reducing the wind speed gear of an outdoor fan of the unit according to a first preset rule until the exhaust pressure switch is turned off or the wind speed gear is reduced to the lowest gear. The method solves the technical problems that when the air conditioner unit in the prior art is in the running state of low-temperature refrigeration, the unit has the phenomenon of running with liquid as the exhaust pressure of the unit is low, and the running reliability of the unit is low.

Description

technical field [0001] The present invention relates to the technical field of air conditioning, in particular to a low-temperature refrigeration control method, device and system for an air conditioner unit. Background technique [0002] At present, low-temperature refrigeration technology has been widely used in hot pot restaurants, restaurants, computer rooms and other places, and the demand for low-temperature refrigeration is increasing, and the temperature to be achieved is getting lower and lower. In the prior art, the methods we use to achieve low-temperature refrigeration mainly include: [0003] 1. Use a DC motor to switch the speed under different ambient temperatures. This method is costly. Generally, DC motors are about 300%-400% more expensive than AC motors. Therefore, this solution is not advisable for the development of low-cost units. [0004] 2. Use chopper speed regulating AC motor. In the prior art, there is already a scheme in which some units use ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00
CPCF24F11/77Y02B30/70
Inventor 胡知耀莫灼均熊俊峰梁郁龙何彬荣徐喆李健成李文滔蒿兴鹏
Owner GREE ELECTRIC APPLIANCES INC
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