A liquid level monitoring circuit
A technology of liquid level monitoring and circuit, which is applied in the direction of logic circuit with logic function, liquid level indicator and liquid level indicator for physical variable measurement, which can solve the problem that the refrigerant liquid level cannot be monitored, and maintenance personnel or drivers cannot Know the amount of refrigerant in the dry receiver and other issues
Active Publication Date: 2020-12-01
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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Problems solved by technology
[0003] The main purpose of the present invention is to provide a liquid level monitoring circuit, aiming at solving the problem that the liquid level of the refrigerant in the dry accumulator cannot be monitored in the prior art, and maintenance personnel or drivers cannot know the amount of refrigerant in the dry accumulator The problem
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[0026] 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 part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0027] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). Relative positional relationship, movement conditions, etc., if the specific posture changes, the directional indication will also change accordingly.
[0028] In addition, the ...
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The invention provides a liquid level monitoring circuit, the liquid level monitoring circuit includes: a liquid level detection unit, the liquid level detection unit is used to detect the liquid level and includes a first output terminal; a pressure regulating unit, the pressure regulating unit and the liquid The bit detection unit is connected in parallel, and includes a second output end; the judgment unit, the judgment unit has a first input end, a second input end and an output end of the judgment unit, the first input end is connected to the second output end, and the second input end is connected to the The first output end; a jumping unit, the jumping unit has a NOR gate circuit and a NOT gate circuit, the input end and the output end of the NOT gate circuit are connected to the NOT gate input terminal of the NOR gate, or the OR gate of the NOR gate The input terminal is connected to the output terminal of the judgment unit; the counter is connected to the output terminal of the NOR gate, and the output terminal of the NOR gate is also connected to the voltage regulating unit. The liquid level monitoring circuit provided by the present invention monitors the liquid level of the liquid storage drier every time the air conditioning system is powered off and restarted, so that the user can know whether the pressure of the air conditioning system is normal.
Description
technical field [0001] The invention relates to the field of automobile air-conditioning systems, in particular to a liquid level monitoring circuit. Background technique [0002] The refrigeration cycle system of automobile air conditioner is mainly composed of compressor, condenser, expansion valve and evaporator, which are connected by pipelines and other auxiliary accessories to form a closed cycle system. The compressor compresses the gaseous refrigerant into high-temperature and high-pressure refrigerant gas and then discharges it from the compressor. After the high-temperature and high-pressure refrigerant gas flows into the condenser through the pipeline, it dissipates heat and cools down in the condenser, and condenses into high-temperature and high-pressure liquid refrigerant. The high-pressure liquid refrigerant enters the dry accumulator through the pipeline, and flows into the expansion valve after being dried. However, if there is too much high-temperature and...
Claims
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IPC IPC(8): G01F23/22G01F23/00H03K19/20
CPCG01F23/22H03K19/20G01F23/80
Inventor 朱俊峰任建华时辰杨菲菲崔建维
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD