Pressure control method and control device for air conditioner and air conditioner
A technology of pressure control and control method, which is applied in the field of control devices, air conditioner pressure control methods, and air conditioners, and can solve problems affecting user experience and comfort, affecting the life and reliability of air conditioners, and compressor damage. Achieve the effects of reducing the risk of liquid back, high accuracy, and reducing heat load
Active Publication Date: 2019-11-05
NINGBO AUX ELECTRIC
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Problems solved by technology
[0002] In order to maximize the performance, most fixed-frequency air conditioners have high operating pressure, especially in T3 working conditions or in summer when the outside temperature is high, the ambient temperature is harsh, and the operating pressure of the air conditioner is high. It will cause the unit to shut down due to high-pressure protection, affecting user experience and comfort; and the system pressure is too high before shutting down, which will cause damage to the compressor, thereby affecting the life and reliability of the air conditioner
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[0058] The high and low pressure protection control method of existing air conditioners is generally to install a pressure switch on the air conditioner. Under severe working conditions, when the unit pressure reaches the pressure threshold, the pressure switch will be triggered, and the unit will stop. Before the shutdown, the system pressure is too high. It will cause damage to the compressor, affect the reliability of the unit, and affect the user experience and comfort.
[0059] In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0060] Such as figure 1 As shown, the present invention provides a pressure control method for an air conditioner, comprising:
[0061] Step S1, detecting the operation mode of the air conditioner;
[0062] Step S2, detecting the exhaust pressure and return air pres...
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The invention provides a pressure control method and control device for an air conditioner and the air conditioner. The pressure control method for the air conditioner comprises the steps that 1, therunning mode of the air conditioner is detected; 2, the air exhaust pressure and the air return pressure of a compressor in the air conditioner are detected; and 3, the rotation speed of an outer fanand an inner fan in the air conditioner is controlled according to the running mode of the air conditioner, the air exhaust pressure and the air return pressure. According to the pressure control method and control device for the air conditioner and the air conditioner, the unit running pressure is continuously detected, the rotation speed of the outer fan or the inner fan is correspondingly adjusted according to comparison of the air exhaust pressure and the air return pressure with a preset value, therefore, the unit running pressure is in an appropriate range value, and the unit jumping phenomenon caused by high-pressure protection or low-pressure protection is prevented; and the control method is high in accuracy, has no delay and is simple and reliable.
Description
technical field [0001] The invention relates to the technical field of air conditioners, in particular to a pressure control method, a control device and an air conditioner for an air conditioner. Background technique [0002] In order to maximize the performance, most fixed-frequency air conditioners have high operating pressure, especially in T3 working conditions or in summer when the outside temperature is high, the ambient temperature is harsh, and the operating pressure of the air conditioner is high. It will cause the unit to shut down due to high-voltage protection, affecting user experience and comfort; and the system pressure is too high before shutting down, which will cause damage to the compressor, thereby affecting the life and reliability of the air conditioner. Contents of the invention [0003] The problem solved by the present invention is that the operating pressure of the existing air conditioner cannot be effectively controlled, and the unit will trip ...
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IPC IPC(8): F24F11/49F24F11/77F24F11/64F24F11/61F24F11/86F24F140/10
CPCF24F11/49F24F11/61F24F11/64F24F11/77F24F11/86F24F2140/10Y02B30/70
Inventor 张中强左泽明田涛李海利杨明登程鹏
Owner NINGBO AUX ELECTRIC
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