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 maintenance personnel or drivers cannot know the refrigeration inside the dry liquid receiver Problems such as the dosage of refrigerant and the liquid level of refrigerant cannot be monitored
Active Publication Date: 2020-03-13
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, which comprises a liquid level detection unit, a pressure regulation unit, a judgment unit, a tripping unit and a counter. The liquid level detection unit is used for detecting a liquid level and comprises a first output end. The pressure regulation unit is connected with the liquid level detection unit in parallel and comprises a second output end. The judgment unit is provided with a first input end, a second input end and a judgment unit output end, the first input end is connected with the second output end, and the second input endis connected with the first output end. The tripping unit is provided with a NOR gate circuit and a NOT gate circuit, the input end and the output end of the NOT gate circuit are both connected withthe NOT gate input end of the NOR gate, and the OR gate input end of the NOR gate is connected with the judgment unit output end. The counter is connected with the output end of the NOR gate, and theoutput end of the NOR gate is further connected with the pressure regulation unit. The liquid level monitoring circuit provided by the invention monitors the liquid level of a liquid storage dryer every time an air conditioning system is powered off and restarted, so that a user can know whether the pressure of the air conditioning system is normal or not.
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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Login to View More 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