CN113606824A - Refrigerant receiver drier - Google Patents
Refrigerant receiver drier Download PDFInfo
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- CN113606824A CN113606824A CN202111103677.4A CN202111103677A CN113606824A CN 113606824 A CN113606824 A CN 113606824A CN 202111103677 A CN202111103677 A CN 202111103677A CN 113606824 A CN113606824 A CN 113606824A
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- refrigerant
- slide rheostat
- liquid level
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- voltage comparator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/006—Accumulators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Air-Conditioning For Vehicles (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The invention provides a refrigerant liquid storage dryer which comprises a refrigerant liquid level monitoring device, wherein the refrigerant liquid level monitoring device is arranged on the refrigerant liquid storage dryer; the refrigerant liquid level monitoring device is used for monitoring the amount of the refrigerant in the refrigerant liquid storage dryer and displaying a monitoring result on a display of the refrigerant liquid level monitoring device. The refrigerant liquid level monitoring device is arranged, the amount of the refrigerant in the refrigerant liquid storage dryer can be obtained through the refrigerant liquid level monitoring device, and the amount of the refrigerant is displayed on the display of the refrigerant liquid level monitoring device, so that a worker can know the amount of the refrigerant in the refrigerant liquid storage dryer, and the refrigerant in the refrigerant liquid storage dryer is supplemented when the amount of the refrigerant is too small, so that the normal supply of the refrigerant in the air conditioning system is well guaranteed, and the air conditioning system can be in a better working state.
Description
Technical Field
The invention belongs to the technical field of automobile air conditioning systems, and particularly relates to a refrigerant liquid storage dryer.
Background
The circulation of refrigerant, i.e. refrigerant, in the existing automotive air conditioning system is shown in fig. 1, and the automotive air conditioning system mainly comprises four major components, namely a compressor 11, a condenser 12, an expansion valve 15 and an evaporator 14, which are connected together through a pipeline and other auxiliary accessories to form a closed circulation system. The compressor 11 compresses the gaseous refrigerant into a high-temperature high-pressure gaseous refrigerant, and then discharges the gaseous refrigerant out of the compressor, the high-temperature high-pressure gaseous refrigerant flows into the condenser 12 through a pipeline, then is radiated and cooled in the condenser, is condensed into a high-temperature high-pressure liquid refrigerant, flows out, and the high-temperature high-pressure liquid refrigerant enters the liquid storage dryer 13 through a pipeline, and flows into the expansion valve after being dried. The liquid storage dryer stores a certain amount of refrigerant, and can supplement the refrigerant in a certain amount under the condition of refrigerant loss of the air-conditioning system, so that the normal supply of the refrigerant in the air-conditioning system is ensured. Therefore, how to design the refrigerant receiver-drier to ensure the normal supply of the refrigerant in the air conditioning system becomes a technical problem that needs to be solved urgently by those skilled in the art.
Disclosure of Invention
The invention aims to provide a refrigerant liquid storage dryer to solve the technical problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
a refrigerant liquid storage dryer comprises a refrigerant liquid level monitoring device, wherein the refrigerant liquid level monitoring device is arranged on the refrigerant liquid storage dryer; the refrigerant liquid level monitoring device is used for monitoring the amount of the refrigerant in the refrigerant liquid storage dryer and displaying a monitoring result on a display of the refrigerant liquid level monitoring device.
Preferably, the refrigerant liquid level monitoring device comprises a first resistance type liquid level sensor arranged in the refrigerant liquid storage dryer and a first controller electrically connected with the first resistance type liquid level sensor, and the resistance value of the first resistance type liquid level sensor changes along with the change of the position of the refrigerant liquid level in the refrigerant liquid storage dryer; and the first controller calculates the height of the refrigerant liquid level corresponding to the resistance value according to the resistance value, and displays the refrigerant quantity corresponding to the height on the display.
Preferably, the refrigerant level monitoring device includes a second resistance-type level sensor, a first voltage dividing resistor, a first slide rheostat, a second voltage dividing resistor, a second slide rheostat, a third voltage dividing resistor, a first voltage comparator, a second voltage comparator, a control circuit, and a second controller, and a resistance value of the second resistance-type level sensor changes along with a change of a position of a refrigerant level in the refrigerant liquid storage dryer; the second resistance type liquid level sensor is connected with the first voltage dividing resistor in series to form a first loop, the first sliding rheostat is connected with the second voltage dividing resistor in series to form a second loop, and the second sliding rheostat is connected with the third voltage dividing resistor in series to form a third loop; the positive input end of the first voltage comparator is connected with a wire harness positioned between the first slide rheostat and the second voltage dividing resistor; the reverse input end of the first voltage comparator is connected with a wiring harness positioned between the second resistance type liquid level sensor and the first divider resistor; the positive input end of the second voltage comparator is connected with a wire harness positioned between the second slide rheostat and the third voltage dividing resistor; the reverse input end of the second voltage comparator is connected with a wiring harness positioned between the second resistance type liquid level sensor and the first divider resistor; the output end of the first voltage comparator and the output end of the second voltage comparator are respectively connected with the control circuit, the control circuit comprises a driving mechanism, and the driving mechanism drives the sliding ends of the first slide rheostat and the second slide rheostat according to signals output by the output ends of the first voltage comparator and the second voltage comparator, so that the resistance values of the first slide rheostat and the second slide rheostat are gradually reduced or increased simultaneously; and the second controller obtains the refrigerant quantity in the refrigerant liquid storage dryer according to the resistance value of the first slide rheostat and the resistance value of the second slide rheostat.
Preferably, the control circuit further includes a nand gate and a nor gate, the driving mechanism includes a first driving element and a second driving element, an output end of the first voltage comparator and an output end of the second voltage comparator are respectively connected to two input ends of the nand gate, an output end of the nand gate is connected to the first driving element, and the first driving element is configured to drive sliding ends of the first sliding rheostat and the second sliding rheostat to slide, so that the resistances of the first sliding rheostat and the second sliding rheostat are gradually reduced at the same time until the first driving element is triggered to stop working; the output end of the first voltage comparator and the output end of the second voltage comparator are respectively connected with two input ends of the NOR gate, the output end of the NOR gate is connected with the second driving piece, and the second driving piece is used for driving the sliding ends of the first slide rheostat and the second slide rheostat to slide, so that the resistance values of the first slide rheostat and the second slide rheostat are gradually increased at the same time until the second driving piece is triggered to stop working.
Preferably, the refrigerant liquid level corresponding to the initial position of the sliding end of the first slide rheostat and the refrigerant liquid level corresponding to the initial position of the sliding end of the second slide rheostat are symmetrical with respect to the refrigerant liquid level corresponding to the middle position of the refrigerant liquid storage dryer.
Preferably, the second controller calculates a half of a sum of the refrigerant quantity corresponding to the resistance value of the first slide rheostat and the refrigerant quantity corresponding to the resistance value of the second slide rheostat, and the calculated value is the refrigerant quantity in the refrigerant liquid storage dryer.
Preferably, the initial position of the sliding end of the first slide rheostat is above the middle position of the first slide rheostat; the initial position of the sliding end of the second slide rheostat is below the middle position of the second slide rheostat.
Preferably, the refrigerant liquid level monitoring device further comprises an alarm device, and the alarm device is electrically connected with the second controller.
Preferably, the alarm device is a buzzer.
Preferably, the alarm device is an audible and visual alarm.
The invention has the beneficial effects that:
the refrigerant liquid storage dryer is provided with the refrigerant liquid level monitoring device, the refrigerant quantity in the refrigerant liquid storage dryer can be obtained through the refrigerant liquid level monitoring device, the refrigerant quantity is displayed on the display of the refrigerant liquid level monitoring device, so that a worker can know the refrigerant quantity in the refrigerant liquid storage dryer, and the refrigerant in the refrigerant liquid storage dryer is supplemented when the refrigerant quantity is too small, so that the normal supply of the refrigerant in an air conditioning system is well guaranteed, and the air conditioning system can be in a better working state.
Drawings
In order to more clearly describe the embodiments of the present application or the technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, and the embodiments of the present invention will be further described in detail with reference to the drawings, wherein
FIG. 1 is a schematic diagram of refrigerant circulation in a conventional vehicle air conditioning system;
fig. 2 is a schematic diagram of a control circuit of a refrigerant level monitoring device according to an embodiment of the present invention.
In the drawings, the reference numbers:
11. compressor 12, condenser 13, liquid storage drier 14 and evaporator
15. Expansion valve 21, second resistance type liquid level sensor 31, first slide rheostat
311. Sliding end 32 of first sliding rheostat, second sliding rheostat
321. Sliding end 41 of second sliding rheostat and first divider resistor
42. Second voltage dividing resistor 43, third voltage dividing resistor 51, first voltage comparator
52. Second voltage comparator 61, NAND gate 62, NOR gate 71, first driving member
72. Second driving member
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following detailed description will be provided with reference to specific embodiments.
The embodiment of the invention provides a refrigerant liquid storage dryer, which comprises a refrigerant liquid level monitoring device, wherein the refrigerant liquid level monitoring device is arranged on the refrigerant liquid storage dryer; the refrigerant liquid level monitoring device is used for monitoring the amount of the refrigerant in the refrigerant liquid storage dryer and displaying a monitoring result on a display of the refrigerant liquid level monitoring device.
The refrigerant liquid storage dryer provided by the embodiment of the invention is provided with the refrigerant liquid level monitoring device, the refrigerant quantity in the refrigerant liquid storage dryer can be obtained through the refrigerant liquid level monitoring device, and the refrigerant quantity is displayed on the display of the refrigerant liquid level monitoring device, so that a worker can know the refrigerant quantity in the refrigerant liquid storage dryer, and the refrigerant in the refrigerant liquid storage dryer is supplemented when the refrigerant quantity is too small, so that the normal supply of the refrigerant in an air conditioning system is better ensured, and the air conditioning system can be in a better working state.
In an embodiment of the present invention, the refrigerant level monitoring device includes a first resistance-type liquid level sensor disposed in the refrigerant liquid storage dryer, and a first controller electrically connected to the first resistance-type liquid level sensor, wherein a resistance value of the first resistance-type liquid level sensor changes with a change of a position of a refrigerant liquid level in the refrigerant liquid storage dryer; and the first controller calculates the height of the refrigerant liquid level corresponding to the resistance value according to the resistance value, and displays the refrigerant quantity corresponding to the height on the display. It can be understood that different resistance values correspond to different refrigerant liquid level heights; the resistance value can correspond to the highest set position of the refrigerant liquid surface when being maximum, and can correspond to the lowest set position of the refrigerant liquid surface when being minimum.
As shown in fig. 2, in another embodiment of the present invention, the refrigerant level monitoring device includes a second resistance-type level sensor 21, a first voltage divider resistor 41, a first slide rheostat 31, a second voltage divider resistor 42, a second slide rheostat 32, a third voltage divider resistor 43, a first voltage comparator 51, a second voltage comparator 52, a control circuit, and a second controller, wherein a resistance value of the second resistance-type level sensor varies with a change of a position of a refrigerant level in the refrigerant storage and drying device; the second resistance type liquid level sensor 21 is connected in series with the first voltage dividing resistor 41 to form a first loop, the first sliding rheostat 31 is connected in series with the second voltage dividing resistor 42 to form a second loop, and the second sliding rheostat 32 is connected in series with the third voltage dividing resistor 43 to form a third loop; the positive input end of the first voltage comparator 51 is connected with the wiring harness between the first sliding rheostat and the second voltage-dividing resistor; the reverse input end of the first voltage comparator is connected with a wiring harness positioned between the second resistance type liquid level sensor and the first divider resistor; the positive input end of the second voltage comparator is connected with a wire harness positioned between the second slide rheostat and the third voltage dividing resistor; the reverse input end of the second voltage comparator 52 is connected with the wiring harness between the second resistance type liquid level sensor and the first divider resistor; the output end of the first voltage comparator and the output end of the second voltage comparator are respectively connected with the control circuit, the control circuit comprises a driving mechanism, and the driving mechanism drives the sliding ends of the first slide rheostat and the second slide rheostat according to signals output by the output end of the first voltage comparator 51 and the output end of the second voltage comparator 52, so that the resistance values of the first slide rheostat and the second slide rheostat are gradually reduced or increased at the same time; and the second controller obtains the refrigerant quantity in the refrigerant liquid storage dryer according to the resistance value of the first slide rheostat and the resistance value of the second slide rheostat.
Further, the control circuit further includes a nand gate 61 and a nor gate 62, the driving mechanism includes a first driving element 71 and a second driving element 72, an output end of the first voltage comparator 51 and an output end of the second voltage comparator 52 are respectively connected to two input ends of the nand gate, an output end of the nand gate is connected to the first driving element, and the first driving element is configured to drive sliding ends of the first sliding resistor 31 and the second sliding resistor 32 to slide, so that resistance values of the first sliding resistor and the second sliding resistor gradually decrease at the same time until the first driving element is triggered to stop working; the output end of the first voltage comparator 51 and the output end of the second voltage comparator are respectively connected with two input ends of the nor gate 62, the output end of the nor gate is connected with the second driving piece, and the second driving piece is used for driving the sliding ends of the first slide rheostat and the second slide rheostat to slide, so that the resistance values of the first slide rheostat and the second slide rheostat are gradually increased at the same time until the second driving piece is triggered to stop working. Preferably, the first driving member may be a forward rotation motor, and the second driving member may be a reverse rotation motor.
Specifically, the refrigerant liquid level corresponding to the initial position of the sliding end of the first slide rheostat 31 and the refrigerant liquid level corresponding to the initial position of the sliding end of the second slide rheostat 32 are symmetrical with respect to the refrigerant liquid level corresponding to the middle position of the refrigerant liquid storage dryer. It can be understood that the first slide rheostat and the second slide rheostat are respectively electrically connected with the second controller, and different resistance values on the first slide rheostat and the second slide rheostat correspond to different refrigerant amounts.
Further, the second controller calculates a half of a sum of the refrigerant quantity corresponding to the resistance value of the first slide rheostat 31 and the refrigerant quantity corresponding to the resistance value of the second slide rheostat, and the calculated value is the refrigerant quantity in the refrigerant liquid storage dryer.
It may be preferred that the initial position of the sliding end 311 of the first slide rheostat is above the middle position of the first slide rheostat; the initial position of the sliding end 321 of the second sliding varistor is below the middle position of the second sliding varistor, so that it can be ensured that the forward voltage of the first voltage comparator is higher than the forward voltage of the second voltage comparator. It can be understood that the first slide rheostat and the second slide rheostat have the same specification, and the maximum resistance values are the same; when the driving mechanism drives the first slide rheostat and the second slide rheostat, the moving speeds of the sliding end of the first slide rheostat and the sliding end of the second slide rheostat are the same, so that the resistance value of the first slide rheostat and the resistance value of the second slide rheostat are increased or decreased simultaneously, the voltage of the first slide rheostat and the voltage of the second slide rheostat are increased or decreased simultaneously, and the forward voltage of the first voltage comparator is guaranteed to be higher than the forward voltage of the second voltage comparator all the time in the moving process; the second resistance-type level sensor sets up in refrigerant stock solution desicator, and the display can set up on refrigerant stock solution desicator's outer wall.
Furthermore, the refrigerant liquid level monitoring device also comprises an alarm device, and the alarm device is electrically connected with the second controller. By adopting the scheme, when the quantity of the refrigerant in the refrigerant liquid storage dryer is monitored to reach the set maximum value or the set minimum value, the alarm device is controlled to alarm through the second controller so as to remind a worker to take out a part of the refrigerant in the refrigerant liquid storage dryer or supplement the refrigerant in the refrigerant liquid storage dryer in time, and therefore the air conditioning system can be in a better working state. It will be appreciated that the display and second controller and alarm means are not shown in the figures.
In an embodiment of the present invention, the alarm device is a buzzer.
In another embodiment provided by the invention, the alarm device is an audible and visual alarm, so that a better reminding effect can be realized for workers.
In one embodiment of the present invention, the total volume of liquid refrigerant in the liquid refrigerant receiver-drier is 200ml, for example. The second resistance type liquid level sensor 21 and the first voltage dividing resistor 41 form a first loop, and the first sliding rheostat 31 and the second sliding rheostat 32 respectively form a second loop and a third loop with the second voltage dividing resistor 42 and the third voltage dividing resistor 43. The refrigerant level corresponding to the initial position of the sliding end 311 of the first slide rheostat is located at a point above the liquid level when the total capacity is half, for example, the corresponding liquid level is 101 ml; the refrigerant level corresponding to the initial position of the sliding end 321 of the second slide rheostat is located at a point lower than the liquid level when the total capacity is half, if the corresponding liquid level is 99ml, the refrigerant level and the liquid level form an upper and lower tolerance band when the liquid level is monitored, therefore, the forward voltage of the first voltage comparator is higher than the forward voltage of the second voltage comparator, when the refrigerant level is at 90ml, namely, the resistance of the second resistance type liquid level sensor is fixed at the resistance value corresponding to the 90ml position, the forward voltage of the first voltage comparator is higher than the reverse voltage, the first voltage comparator outputs a high level, the forward voltage of the second voltage comparator is higher than the reverse voltage, the second voltage comparator outputs a high level, the upper side input end of the nand gate inputs a high level, the lower side input end of the nand gate inputs a high level, the nand gate outputs a low level according to the nand gate logic, the first driving member works, the upper input end of the NOR gate inputs high level, the lower input end of the NOR gate inputs high level, the NOR gate outputs low level according to the logic of the NOR gate, and the second driving piece does not work. When the first driving member works, the sliding ends of the first sliding rheostat and the second sliding rheostat are driven to slide downwards, so that the resistance values of the first sliding rheostat and the second sliding rheostat are gradually reduced, the forward voltages of the first voltage comparator and the second voltage comparator are continuously reduced, when the sliding end of the first sliding rheostat is reduced to a position corresponding to 91ml and the sliding end of the second sliding rheostat is reduced to a position corresponding to 89, the forward voltage of the first voltage comparator is higher than the reverse voltage, the first voltage comparator outputs a high level, the forward voltage of the second voltage comparator is lower than the reverse voltage, the second voltage comparator outputs a low level, the upper input end of the NAND gate inputs a high level, the lower input end of the NAND gate inputs a low level, according to the NAND gate logic, the NAND gate outputs a high level, the first driving member stops working, or the upper input end of the NOR gate inputs a high level, the input end at the lower side of the NOR gate inputs low level, the NOR gate outputs low level according to the logic of the NOR gate, and the second driving piece does not work. The resistance values of the first slide rheostat and the second slide rheostat are not changed any more, and at the moment, a half of the sum of the liquid levels corresponding to the first slide rheostat and the second slide rheostat, namely 90ml, is displayed on the display and is used as the refrigerant amount in the refrigerant liquid storage dryer, so that the monitoring of the refrigerant liquid level is realized. When the refrigerant liquid level is more than 100ml, the second driving piece works all the time to drive the first slide rheostat and the second slide rheostat to slide upwards until the liquid level tolerance bands corresponding to the two slide rheostats cover the liquid level corresponding to the resistance value of the second resistance type liquid level sensor; when the refrigerant liquid level is less than 100ml, the first driving piece works all the time, and drives the sliding end of the first slide rheostat and the sliding end of the second slide rheostat to slide downwards until the liquid level tolerance band of the two slide rheostats covers the liquid level corresponding to the resistance value of the second resistance type liquid level sensor, so that the function of monitoring the refrigerant liquid level is realized.
The above are only preferred embodiments of the present invention, it should be noted that these examples are only for illustrating the present invention and not for limiting the scope of the present invention, and after reading the content of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalents also fall within the scope of the claims appended to the present application.
Claims (10)
1. The refrigerant liquid storage dryer is characterized by comprising a refrigerant liquid level monitoring device, wherein the refrigerant liquid level monitoring device is arranged on the refrigerant liquid storage dryer; the refrigerant liquid level monitoring device is used for monitoring the amount of the refrigerant in the refrigerant liquid storage dryer and displaying a monitoring result on a display of the refrigerant liquid level monitoring device.
2. The refrigerant liquid storage dryer according to claim 1, wherein the refrigerant liquid level monitoring device comprises a first resistance-type liquid level sensor arranged in the refrigerant liquid storage dryer and a first controller electrically connected with the first resistance-type liquid level sensor, and the resistance value of the first resistance-type liquid level sensor changes along with the change of the position of the refrigerant liquid level in the refrigerant liquid storage dryer; and the first controller calculates the height of the refrigerant liquid level corresponding to the resistance value according to the resistance value, and displays the refrigerant quantity corresponding to the height on the display.
3. The refrigerant liquid storage dryer according to claim 1, wherein the refrigerant liquid level monitoring device comprises a second resistance type liquid level sensor, a first voltage dividing resistor, a first slide rheostat, a second voltage dividing resistor, a second slide rheostat, a third voltage dividing resistor, a first voltage comparator, a second voltage comparator, a control circuit and a second controller, and the resistance value of the second resistance type liquid level sensor changes along with the change of the position of the refrigerant liquid level in the refrigerant liquid storage dryer; the second resistance type liquid level sensor is connected with the first voltage dividing resistor in series to form a first loop, the first sliding rheostat is connected with the second voltage dividing resistor in series to form a second loop, and the second sliding rheostat is connected with the third voltage dividing resistor in series to form a third loop; the positive input end of the first voltage comparator is connected with a wire harness positioned between the first slide rheostat and the second voltage dividing resistor; the reverse input end of the first voltage comparator is connected with a wiring harness positioned between the second resistance type liquid level sensor and the first divider resistor; the positive input end of the second voltage comparator is connected with a wire harness positioned between the second slide rheostat and the third voltage dividing resistor; the reverse input end of the second voltage comparator is connected with a wiring harness positioned between the second resistance type liquid level sensor and the first divider resistor; the output end of the first voltage comparator and the output end of the second voltage comparator are respectively connected with the control circuit, the control circuit comprises a driving mechanism, and the driving mechanism drives the sliding ends of the first slide rheostat and the second slide rheostat according to signals output by the output ends of the first voltage comparator and the second voltage comparator, so that the resistance values of the first slide rheostat and the second slide rheostat are gradually reduced or increased simultaneously; and the second controller obtains the refrigerant quantity in the refrigerant liquid storage dryer according to the resistance value of the first slide rheostat and the resistance value of the second slide rheostat.
4. The refrigerant receiver-drier as claimed in claim 3, wherein the control circuit further includes a nand gate and a nor gate, the driving mechanism includes a first driving element and a second driving element, an output terminal of the first voltage comparator and an output terminal of the second voltage comparator are respectively connected to two input terminals of the nand gate, an output terminal of the nand gate is connected to the first driving element, and the first driving element is configured to drive sliding terminals of the first slide rheostat and the second slide rheostat to slide, so that the resistances of the first slide rheostat and the second slide rheostat are gradually reduced at the same time until the first driving element is triggered to stop working; the output end of the first voltage comparator and the output end of the second voltage comparator are respectively connected with two input ends of the NOR gate, the output end of the NOR gate is connected with the second driving piece, and the second driving piece is used for driving the sliding ends of the first slide rheostat and the second slide rheostat to slide, so that the resistance values of the first slide rheostat and the second slide rheostat are gradually increased at the same time until the second driving piece is triggered to stop working.
5. The refrigerant receiver dryer as claimed in claim 4, wherein the refrigerant level corresponding to the initial position of the sliding end of the first slide rheostat and the refrigerant level corresponding to the initial position of the sliding end of the second slide rheostat are symmetrical with respect to the refrigerant level corresponding to the middle position of the refrigerant receiver dryer.
6. The refrigerant receiver drier according to claim 5, wherein the second controller calculates a half of a sum of a refrigerant amount corresponding to a resistance value of the first slide rheostat and a refrigerant amount corresponding to a resistance value of the second slide rheostat, and the calculated value is the refrigerant amount in the refrigerant receiver drier.
7. The refrigerant receiver-drier as claimed in claim 6, wherein the initial position of the sliding end of the first slide rheostat is above the middle position of the first slide rheostat; the initial position of the sliding end of the second slide rheostat is below the middle position of the second slide rheostat.
8. The refrigerant receiver-drier as claimed in any one of claims 3 to 7, wherein the refrigerant level monitoring device further comprises an alarm device, and the alarm device is electrically connected to the second controller.
9. The refrigerant receiver-drier as claimed in claim 8, wherein the alarm device is a buzzer.
10. The refrigerant receiver-drier as claimed in claim 8, wherein the alarm device is an audible and visual alarm.
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| CN202111103677.4A CN113606824B (en) | 2021-09-17 | 2021-09-17 | Refrigerant receiver drier |
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| CN202111103677.4A CN113606824B (en) | 2021-09-17 | 2021-09-17 | Refrigerant receiver drier |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0534187A (en) * | 1991-08-02 | 1993-02-09 | Toshiba Corp | Cryogenic liquid level detector |
| CN104568072A (en) * | 2013-10-15 | 2015-04-29 | 成都天宇创新科技有限公司 | Liquid level alarm for strong-acid strong-alkali solutions |
| CN205334254U (en) * | 2016-02-04 | 2016-06-22 | 关吉 | Water level monitor control device |
| CN110879092A (en) * | 2019-11-29 | 2020-03-13 | 安徽江淮汽车集团股份有限公司 | Liquid level monitoring circuit |
| CN210217789U (en) * | 2019-05-18 | 2020-03-31 | 新乡市领先助剂有限公司 | Underground concentrated solution hydraulic monitoring system |
| CN212058990U (en) * | 2020-06-18 | 2020-12-01 | 河南顺圆水处理技术有限公司 | Surface water quality treatment monitoring system |
-
2021
- 2021-09-17 CN CN202111103677.4A patent/CN113606824B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0534187A (en) * | 1991-08-02 | 1993-02-09 | Toshiba Corp | Cryogenic liquid level detector |
| CN104568072A (en) * | 2013-10-15 | 2015-04-29 | 成都天宇创新科技有限公司 | Liquid level alarm for strong-acid strong-alkali solutions |
| CN205334254U (en) * | 2016-02-04 | 2016-06-22 | 关吉 | Water level monitor control device |
| CN210217789U (en) * | 2019-05-18 | 2020-03-31 | 新乡市领先助剂有限公司 | Underground concentrated solution hydraulic monitoring system |
| CN110879092A (en) * | 2019-11-29 | 2020-03-13 | 安徽江淮汽车集团股份有限公司 | Liquid level monitoring circuit |
| CN212058990U (en) * | 2020-06-18 | 2020-12-01 | 河南顺圆水处理技术有限公司 | Surface water quality treatment monitoring system |
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| CN113606824B (en) | 2022-04-26 |
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