Method and device for detecting lack of refrigerant in air conditioner and air conditioner
A refrigerant detection and air conditioner technology, which is applied in the field of devices, air conditioners, and air conditioner lack of refrigerant detection methods, can solve problems such as the inability to accurately detect the refrigerant state, and achieve the effect of improving recognition accuracy and detection accuracy
Active Publication Date: 2022-01-21
NINGBO AUX ELECTRIC +1
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Problems solved by technology
[0005] The object of the present invention is to provide a method and device for detecting lack of refrigerant in an air conditioner, and an air conditioner, so as to improve the problems that existing air conditioners cannot accurately detect the state of refrigerant
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[0040] 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.
[0041] Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention. ...
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The present invention relates to the technical field of air conditioners, and specifically provides an air conditioner lack of refrigerant detection method, device and air conditioner. The air conditioner lack of refrigerant detection method firstly determines whether the current cycle is all The mid-pipe temperatures of all indoor units meet the first preset condition; use the mid-pipe temperature of the indoor units to judge the refrigerant for the first time, and when it is determined that the mid-pipe temperatures of all indoor units meet the first preset condition, then Combined with the opening of the indoor unit valve of the indoor unit to further judge, to avoid misjudgment caused by the temperature sensing package falling off, etc., when all the valve openings of the indoor unit meet the second preset condition, it is determined that the air conditioner lacks refrigerant. Combined with the structural characteristics of the air conditioner, the judgment is made according to the temperature of the middle pipe of each indoor unit and the opening of the valve of the indoor unit, so as to avoid the influence of a certain indoor unit on the judgment result and improve the detection accuracy of refrigerant shortage.
Description
technical field [0001] The invention relates to the technical field of air conditioners, in particular to a method and device for detecting lack of refrigerant in an air conditioner and an air conditioner. Background technique [0002] Multi-connected air conditioners often cause refrigerant leakage in the system due to long-term standing or long-distance transportation. Refrigerant leakage makes the system in a state of fluorine deficiency, and it is necessary to replenish the refrigerant in time. If the refrigerant is not replenished in time, it will cause The air conditioner system performance is degraded. [0003] The current air conditioner unit can still operate under the state of fluorine deficiency (for example, the refrigerant is at least 5% of the nominal refrigerant amount), but the cooling effect of the unit is poor at this time. If the operation is not stopped in time, the comfort will be poor and affect the user experience. In addition, the air conditioner Run...
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IPC IPC(8): F24F11/36F24F11/64F24F11/70F24F11/84F24F11/88F24F140/20
CPCF24F11/36F24F11/64F24F11/70F24F11/84F24F11/88F24F2140/20
Inventor 陈东吉金浩鲍洋
Owner NINGBO AUX ELECTRIC