CN106440584A - Refrigerant leakage detection device and method and air conditioner - Google Patents
Refrigerant leakage detection device and method and air conditioner Download PDFInfo
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- CN106440584A CN106440584A CN201611046799.3A CN201611046799A CN106440584A CN 106440584 A CN106440584 A CN 106440584A CN 201611046799 A CN201611046799 A CN 201611046799A CN 106440584 A CN106440584 A CN 106440584A
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- voltage
- conditioning system
- air conditioning
- refrigerant leakage
- secondary refrigerant
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Classifications
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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
- F25B49/005—Arrangement or mounting of control or safety devices of safety devices
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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
- F25B2500/00—Problems to be solved
- F25B2500/22—Preventing, detecting or repairing leaks of refrigeration fluids
- F25B2500/222—Detecting refrigerant leaks
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
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- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a refrigerant leakage detection device and method and an air conditioner, and relates to the technical field of air conditioners. The detection device and method are used for detecting whether a refrigerant in an air conditioning system leaks or not. The detection device comprises a detection circuit, a voltage comparator and an indoor unit main control board of the air conditioning system. The detection circuit and the voltage comparator are arranged in the air conditioning system and communicated with the indoor unit main control board, and the detection circuit is used for converting the refrigerant gas concentration of the indoor environment where the air conditioning system is located into a first voltage and sending the first voltage to the voltage comparator; the voltage comparator is used for judging whether the first voltage is larger than a preset voltage and sending a judgment result to the indoor unit main control board; the indoor unit main control board is used for judging whether the refrigerant of the air conditioning system leaks or not according to the judgment result. The refrigerant leakage detection device and method are applied to detection of refrigerant leakage.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly to a kind of detection means of secondary refrigerant leakage, method and air-conditioning.
Background technology
With the development of society, the domestic environment of green health safe and intelligent is increasingly pursued by user, air-conditioning
Using no exception, current air-conditioning has become one of requisite household electrical appliances of people.Coolant is played in air conditioning system operation
Important effect, which produces refrigerating effect, realizes the function of air conditioning system in order to transferring heat energy.
In air conditioning system running, coolant enters evaporation endothermic in vaporizer, makes to be passed through the cold water temperature of vaporizer
Chilled water is declined to become, chilled water carries out heat exchange by the surface cooler in air-conditioning equipment with processed air again afterwards, makes
Air themperature reduces.Once air conditioning system coolant in running is leaked, air conditioning system is because lack coolant to compression
Cool around machine, during causing compressor operating, temperature is too high, relevant protection device such as overload protective device meeting and
When disconnect compressor power loop, so as to protect compressor, when temperature reaches normal, protection device can restart compressor
Resume work, can so cause compressor for a long time because oil starvation operates and break down, cause many safety problems.
Content of the invention
The present invention provides a kind of detection means of secondary refrigerant leakage, method and air-conditioning, for detecting the coolant in air conditioning system
Whether reveal.
For reaching above-mentioned purpose, embodiments of the invention are adopted the following technical scheme that：
In a first aspect, providing a kind of detection means of secondary refrigerant leakage, the device includes：
Detection circuit, the indoor set master control borad of voltage comparator and air conditioning system, wherein the detection circuit with described
Voltage comparator may be contained within the inside of the air conditioning system and is connected with the indoor set master control borad；
The detection circuit is used for the cold media gas concentration of the indoor environment that air conditioning system is located and is converted to first voltage
And it is sent to the voltage comparator；
The voltage comparator is used for judging whether the first voltage is more than predeterminated voltage and will determine that result is sent to
The indoor set master control borad；
Whether the coolant that the indoor set master control borad is used for judging air conditioning system according to the judged result leaks.
Second aspect, provides a kind of detection method of secondary refrigerant leakage, for controlling the secondary refrigerant leakage described in first aspect
Detection means carries out the detection of secondary refrigerant leakage, and methods described includes：
The cold media gas concentration of the indoor environment that air conditioning system is located is converted to first voltage；
Judge whether the first voltage is more than predeterminated voltage and draws judged result；
Whether leaked according to the coolant that the judged result judges air conditioning system.
The third aspect, provides a kind of air-conditioning, and the air-conditioning includes the detection means of the secondary refrigerant leakage described in first aspect.
A kind of detection means of secondary refrigerant leakage provided in an embodiment of the present invention includes：Detection circuit, voltage comparator and
The indoor set master control borad of air conditioning system, wherein detection circuit and voltage comparator may be contained within the inside of air conditioning system and with interior
Machine master control borad is connected；Detection circuit is used for the cold media gas concentration of the indoor environment that air conditioning system is located and is converted to the first electricity
Press and be sent to voltage comparator；Voltage comparator is used for judging whether first voltage is more than predeterminated voltage and will determine that result is sent out
Give indoor set master control borad；Whether the coolant that indoor set master control borad is used for judging air conditioning system according to judged result leaks.
Because the coolant gas of the indoor environment that air conditioning system can be located by the detection means of secondary refrigerant leakage provided in an embodiment of the present invention
Bulk concentration is converted to first voltage and judges that first voltage, whether more than predeterminated voltage, can determine air-conditioning system by judged result
Whether the coolant of system leaks, so the detection means of secondary refrigerant leakage provided in an embodiment of the present invention can be used for detecting air-conditioning
Whether the coolant in system is revealed.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Accompanying drawing to be used needed for technology description is had to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, acceptable
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is one of detection means schematic diagram of secondary refrigerant leakage provided in an embodiment of the present invention；
Fig. 2 is the two of the detection means schematic diagram of secondary refrigerant leakage provided in an embodiment of the present invention；
Fig. 3 is variety classes coolant provided in an embodiment of the present invention corresponding resistance value curve chart under variable concentrations；
Fig. 4 is the three of the detection means schematic diagram of secondary refrigerant leakage provided in an embodiment of the present invention；
Fig. 5 is one of detection method flow chart of steps of secondary refrigerant leakage provided in an embodiment of the present invention；
Fig. 6 is the two of the detection method flow chart of steps of secondary refrigerant leakage provided in an embodiment of the present invention；
Fig. 7 is the three of the detection method flow chart of steps of secondary refrigerant leakage provided in an embodiment of the present invention；
Fig. 8 is the four of the detection method flow chart of steps of secondary refrigerant leakage provided in an embodiment of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
It should be noted that the printed words such as " first ", " second " in the application be used for the purpose of basic to function and effect
Identical identical entry or similar item make a distinction, and the printed words such as " first ", " second " are not that quantity and execution order are being carried out
Limit.
The embodiment of the present invention provides a kind of detection means of secondary refrigerant leakage, and with reference to shown in Fig. 1, the device includes, detection electricity
The indoor set master control borad 03 on road 01, voltage comparator 02 and air conditioning system, wherein detection circuit 01 is equal with voltage comparator 02
It is arranged at the inside of air conditioning system and is connected with indoor set master control borad 03.
Detection circuit 01 is used for the cold media gas concentration of the indoor environment that air conditioning system is located and is converted to first voltage simultaneously
It is sent to voltage comparator 02.
Specifically, detection circuit 01 detects the cold media gas concentration of the indoor environment at air conditioning system place and in outfan
Corresponding voltage, i.e. first voltage is exported, the first voltage that outfan is exported is sent to voltage ratio relatively by wherein detection circuit 01
" " input of device 02.
Voltage comparator 02 is used for judging whether first voltage is more than predeterminated voltage and will determine that result is sent to indoor set
Master control borad 03.
Specifically, with reference to shown in Fig. 2, " " input first divider resistance 04 of connection of voltage comparator 02, this first point
Piezoresistance 04 can make supply voltage be input into a predetermined voltage, i.e. predeterminated voltage, the predeterminated voltage to voltage comparator 02
Cold media gas intensity reference value corresponding voltage is specially preset, and with reference to shown in Fig. 3, different types of coolant is under variable concentrations
A corresponding resistance value, by determining the reference value for presetting coolant concentration, it can be deduced that corresponding resistance value, and by calculating
Go out the corresponding voltage of the resistance value, i.e. predeterminated voltage.
Exemplary, with reference to shown in Fig. 3, when the species of coolant is R-134a type cold-producing medium, default cold media gas concentration base
When quasi- value is for 100ppm, R-134a type cold-producing medium corresponding resistance value in detection circuit 01 is 1 Ω, by can be calculated
When default cold media gas intensity reference value is 100ppm, the corresponding magnitude of voltage of default cold media gas intensity reference value.
Specifically, the judged result of voltage comparator 02 is output low level signal or output high level signal, voltage ratio
First voltage is accessed compared with " " input of device 02, " " input of voltage comparator 02 accesses predeterminated voltage, voltage comparator
02 by judging whether first voltage is more than predeterminated voltage and will determine that result is sent to indoor set master control borad 03, voltage comparator
Whether 02 can be according to first voltage more than the corresponding level signal of predeterminated voltage output, when first voltage is more than predeterminated voltage
When, voltage comparator 02 exports low level signal the outside input pin by this low level signal by indoor set master control borad 03
Indoor set master control borad 03 is sent to, when first voltage is less than predeterminated voltage, the output high level signal of voltage comparator 02 simultaneously will
This high level signal is sent to indoor set master control borad 03 by the outside input pin of indoor set master control borad 03.
Whether the coolant that indoor set master control borad 03 is used for judging air conditioning system according to judged result leaks.
Specifically, when indoor set master control borad 03 receives the low level signal of the output of voltage comparator 02, i.e., the first electricity
The intelligence system of the level signal for exporting more than voltage comparator during predeterminated voltage 02, indoor set master control borad 03 is pressed to pass through low level
Signal can be determined that the coolant of air conditioning system is leaked, when indoor set master control borad 03 receives the height of the output of voltage comparator 02
During level signal, i.e., first voltage is less than the level signal that voltage comparator 02 during predeterminated voltage is exported, indoor set master control borad 03
Intelligence system coolant that air conditioning system can be determined that by high level signal leak.
A kind of detection means of secondary refrigerant leakage provided in an embodiment of the present invention includes：Detection circuit, voltage comparator and
The indoor set master control borad of air conditioning system, wherein detection circuit and voltage comparator may be contained within the inside of air conditioning system and with interior
Machine master control borad is connected；Detection circuit is used for the cold media gas concentration of the indoor environment that air conditioning system is located and is converted to the first electricity
Press and be sent to voltage comparator；Voltage comparator is used for judging whether first voltage is more than predeterminated voltage and will determine that result is sent out
Give indoor set master control borad；Whether the coolant that indoor set master control borad is used for judging air conditioning system according to judged result leaks.
Because the coolant gas of the indoor environment that air conditioning system can be located by the detection means of secondary refrigerant leakage provided in an embodiment of the present invention
Bulk concentration is converted to first voltage and judges that first voltage, whether more than predeterminated voltage, can determine air-conditioning system by judged result
Whether the coolant of system leaks, so the detection means of secondary refrigerant leakage provided in an embodiment of the present invention can be used for detecting air-conditioning
Whether the coolant in system is revealed.
Optionally, the detection circuit in the detection means of secondary refrigerant leakage provided in an embodiment of the present invention includes gas sensing
Device, the input of gas sensor connects the first level terminal, the outfan connection voltage comparator of gas sensor.
Gas sensor is used for the cold media gas concentration of the indoor environment that air conditioning system is located and is converted to resistance value, and
Resistance value is converted to first voltage and is sent to voltage comparator.
Specifically, with reference to shown in Fig. 4, the detection circuit 01 includes gas sensor 05 and the second divider resistance 06, second
The resistance value of divider resistance 06 is RL, and the input of gas sensor 05 connects the first level terminal VC, gas sensor 05 defeated
Go out end connection voltage comparator 02, the outfan of the first end connection gas sensor 05 of the second divider resistance 06, the second partial pressure
The second end connection second electrical level end GND of resistance 06.When the gas sensor 05 in detection circuit 01 detects cold media gas
When concentration changes, also there is respective change in its electrical conductivity, and therefore resistance value RS of gas sensor 05 changes, detection
Circuit 01 according to resistance value RS of gas sensor 05 and the second divider resistance 06 in the corresponding voltage VRL of outfan output, i.e.,
The specific algorithm formula of first voltage, wherein first voltage VRL is：VRL=(VC × RL)/(RS+RL), detection circuit 01 will be defeated
First voltage VRL for going out end output is sent to " " input of voltage comparator 02.
Exemplary, the gas sensor 05 can be TGS832-A00 type sensor, TGS832-A00 type sensor pair
The sensitive sub-prime that cold media gas have higher sensitivity, GS832-A00 type sensor is made up of tin ash quasiconductor, and which is clear
Clean in the air electrical conductivity is very low, in the presence of in the air detected gas, the electrical conductivity of the higher sensor of the gas concentration
Can be higher.
Optionally, the surface of gas sensor 05 is provided with through hole, and gas sensor 05 is by being located with air conditioning system
Indoor environment carries out air-flow exchange.
Specifically, on the block of the gas sensor 05 and pedestal, gas louvre is provided with, the gas louvre can
Air current flow is accelerated by pumping principle and the indoor environment with air conditioning system place carries out air-flow exchange, 05 energy of gas sensor
The cold media gas concentration of the indoor environment at enough quick detection response air conditioning system places.
The gas sensor that in the detection means of secondary refrigerant leakage provided in an embodiment of the present invention, detection circuit includes, gas is passed
The input of sensor connects the first level terminal, the outfan connection voltage comparator of gas sensor.Gas sensor is used for will
The cold media gas concentration of the indoor environment that air conditioning system is located is converted to resistance value, and resistance value is converted to first voltage simultaneously
It is sent to voltage comparator.The concentration of cold media gas can be converted to corresponding magnitude of voltage by gas sensor by detection circuit
And voltage comparator is sent to, so as to judge the magnitude relationship of first voltage and predeterminated voltage by voltage comparator, and pass through
Whether the coolant that indoor set master control borad judges air conditioning system according to the judged result of voltage comparator leaks.
Optionally, the indoor set master control borad in the detection means of secondary refrigerant leakage provided in an embodiment of the present invention is additionally operable to sentencing
Determine air conditioning system coolant leak after, control air conditioning system shutdown.
Specifically, line control machine sends control by the outside input pin of indoor set master control borad to indoor set master control borad and refers to
Order, the corresponding display word of the instruction that line control machine is sent to indoor set master control borad is with reference to shown in table 1, and user is defeated to line control machine
After entering 03 instruction in following table, i.e. " long-range start-stop 1 " instruction, line control machine sends " long-range start-stop 1 " control to indoor set master control borad
Instruction, while the instruction sends the outside input pin to indoor set master control borad, only by the outside of indoor set master control borad
Input pin receives a low level signal and the instruction is triggered, and " long-range start-stop 1 " control instruction could be by indoor set
Master control borad is received and execute instruction, i.e. when indoor set master control borad receives the low level signal of voltage comparator output, room
Interior machine master control borad receives " the long-range start-stop 1 " of line control machine transmission and instructs and control air conditioning system to shut down.
| Show word | Input |
| 00 | Do not set |
| 01 | Room temperature control (is freezed) |
| 02 | Room temperature control (is heated) |
| 03 | Long-range start-stop 1 |
| 04 | Long-range start-stop 2 (operating) |
| 05 | Long-range start-stop 2 (stopping) |
| 06 | Line control machine after forcing to stop is forbidden |
| 07 | Remotely cold and hot switching |
| 08 | No |
Table 1
Exemplary, cold media gas concentration base is preset when the cold media gas concentration of the indoor environment at air conditioning system place is more than
During quasi- value, i.e. the coolant of air conditioning system is leaked, and first voltage is more than predeterminated voltage, voltage comparator output low level letter
Number, " long-range start-stop 1 " that indoor set master control borad is received the low level signal of voltage comparator output and sent by line control machine
Instruction control air conditioning system shutdown.When the cold media gas concentration of the indoor environment at air conditioning system place is dense less than cold media gas are preset
During degree reference value, i.e. the coolant of air conditioning system is leaked, and first voltage is less than predeterminated voltage, the high electricity of voltage comparator output
Ordinary mail number, now indoor set master control borad do not receive " long-range start-stop 1 " instruction of line control machine transmission, air conditioning system keeps normal and transports
OK.
It is used for judging air-conditioning by indoor set master control borad in the detection means of secondary refrigerant leakage provided in an embodiment of the present invention
The coolant of system controls air conditioning system shutdown after leaking, can prevent compressor after the coolant of air conditioning system is revealed
Protection device frequently starts shooting shutdown so as to cause the operating of protection device oil starvation to be broken down, and reduces the compressor in air conditioning system
Damage Deng electric component.
Yet another embodiment of the invention provides a kind of detection method of secondary refrigerant leakage, for controlling the coolant in above-described embodiment
The detection means of leakage carries out the detection of secondary refrigerant leakage, and with reference to shown in Fig. 5, the method includes：
S01, the cold media gas concentration of the indoor environment that air conditioning system is located are converted to first voltage.
Specifically, detection electric circuit inspection is located to air conditioning system the cold media gas concentration of indoor environment is simultaneously defeated in outfan
Go out corresponding voltage, i.e. first voltage.
S02, judge that whether first voltage more than predeterminated voltage and draws judged result.
Specifically, " " input of voltage comparator accesses first voltage, and " " input of voltage comparator is accessed in advance
If voltage, voltage comparator is by judging whether first voltage is more than predeterminated voltage and will determine that result is sent to indoor set master control
Plate.
Whether the coolant that the indoor set master control borad of air conditioning system judges air conditioning system according to judged result leaks.If the
One voltage is more than predeterminated voltage, execution step S03, if first voltage is less than predeterminated voltage, execution step S04.
S03, the coolant of air conditioning system are leaked.
Specifically, when indoor set master control borad receives the judged result of voltage comparator for first voltage more than default electricity
Pressure, the coolant that the intelligence system of indoor set master control borad can be determined that air conditioning system by this judged result is leaked.
S04, the coolant of air conditioning system are leaked.
Specifically, when indoor set master control borad receives the judged result of voltage comparator for first voltage less than default electricity
Pressure, the coolant that the intelligence system of indoor set master control borad can be determined that air conditioning system by this judged result is leaked.
Because the indoor environment that air conditioning system can be located by the detection method of secondary refrigerant leakage provided in an embodiment of the present invention
Cold media gas concentration be converted to first voltage and judge that first voltage, can be true by judged result whether more than predeterminated voltage
Whether the coolant for determining air conditioning system leaks, so the detection method of secondary refrigerant leakage provided in an embodiment of the present invention can be used for
Whether the coolant in detection air conditioning system is revealed.
Further, with reference to shown in Fig. 6, the room that air conditioning system is located by above-mentioned steps S01 is embodiments provided
The cold media gas concentration of interior environment is converted to the implementation of first voltage, specific as follows：
S011, the cold media gas concentration of the indoor environment that air conditioning system is located are converted to resistance value.
Specifically, when the concentration that the gas sensor in detection circuit detects cold media gas changes, its conductance
Also there is respective change in rate, therefore resistance value RS of gas sensor changes, and gas sensor is according to the dense of cold media gas
Degree draws corresponding resistance value RS.
S012, resistance value is converted to first voltage.
Specifically, detection circuit is corresponding in outfan output to the second divider resistance according to resistance value RS of gas sensor
Voltage VRL, i.e. first voltage, wherein the resistance value of the second divider resistance be RL, the specific algorithm formula of first voltage VRL
For：VRL=(VC × RL)/(RS+RL), detection circuit sends first voltage VRL that outfan is exported to voltage comparator
" " input.
Because the detection circuit in the detection method of secondary refrigerant leakage provided in an embodiment of the present invention can by gas sensor
The concentration of cold media gas is converted to corresponding magnitude of voltage and is sent to voltage comparator, so as to be judged by voltage comparator
The magnitude relationship of first voltage and predeterminated voltage, and judged according to the judged result of voltage comparator by indoor set master control borad empty
Whether the coolant of adjusting system leaks.
Further, with reference to shown in Fig. 7, above-mentioned steps S02 are embodiments provided and judges whether first voltage is big
In predeterminated voltage and the implementation of judged result is drawn, specific as follows, when judged result is more than predeterminated voltage for first voltage
When, execution step S022, when judged result is less than predeterminated voltage for first voltage, execution step S023.
S021, judge that whether first voltage more than predeterminated voltage and exports corresponding level signal.
Specifically, voltage comparator output low level signal or output high level signal, voltage comparator can be according to the
Whether one voltage exports corresponding level signal more than predeterminated voltage.
S022, output low level signal.
Specifically, when first voltage is more than predeterminated voltage, voltage comparator output low level signal by this low level
Signal is sent to indoor set master control borad by the outside input pin of indoor set master control borad.
S023, output high level signal.
Specifically, when first voltage is less than predeterminated voltage, voltage comparator output high level signal by this high level
Signal is sent to indoor set master control borad by the outside input pin of indoor set master control borad.
Optionally, with reference to shown in Fig. 8, the detection method of the secondary refrigerant leakage that any of the above-described embodiment is provided, judging air-conditioning
After the coolant of system is leaked, the method also includes：
S05, control air conditioning system shutdown.
Specifically, line control machine sends control by the outside input pin of indoor set master control borad to indoor set master control borad and refers to
Order, the corresponding display word of the instruction that line control machine is sent to indoor set master control borad is with reference to shown in table 1, and user is defeated to line control machine
After entering 03 instruction in following table, i.e. " long-range start-stop 1 " instruction, line control machine sends " long-range start-stop 1 " control to indoor set master control borad
Instruction, while the instruction sends the outside input pin to indoor set master control borad, only by the outside of indoor set master control borad
Input pin receives a low level signal and the instruction is triggered, and " long-range start-stop 1 " control instruction could be by indoor set
Master control borad is received and execute instruction, i.e. when indoor set master control borad receives the low level signal of voltage comparator output, room
Interior machine master control borad receives " the long-range start-stop 1 " of line control machine transmission and instructs and control air conditioning system to shut down.
In the detection method of secondary refrigerant leakage provided in an embodiment of the present invention, indoor set master control borad is used for judging air conditioning system
Coolant leak after control air conditioning system shutdown, compressor protection after the coolant of air conditioning system is revealed can be prevented
Device frequently starts shooting shutdown so as to cause the operating of protection device oil starvation to be broken down, and reduces the electricity such as compressor in air conditioning system
The damage of gas part.
The above, the only specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and any
Those familiar with the art the invention discloses technical scope in, the change or replacement that can readily occur in, all answer
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be defined by scope of the claims.
Claims (10)
1. a kind of detection means of secondary refrigerant leakage, it is characterised in that the device includes：
The indoor set master control borad of detection circuit, voltage comparator and air conditioning system, wherein the detection circuit and the voltage
Comparator may be contained within the inside of the air conditioning system and is connected with the indoor set master control borad；
It is concurrent that the cold media gas concentration of indoor environment of the detection circuit for air conditioning system is located is converted to first voltage
Give the voltage comparator；
The voltage comparator is used for judging whether the first voltage is more than predeterminated voltage and it is described to will determine that result is sent to
Indoor set master control borad；
Whether the coolant that the indoor set master control borad is used for judging air conditioning system according to the judged result leaks.
2. the detection means of secondary refrigerant leakage according to claim 1, it is characterised in that
The detection circuit includes gas sensor, and the input of the gas sensor connects the first level terminal, the gas
The outfan of sensor connects the voltage comparator；
The gas sensor is used for the cold media gas concentration of the indoor environment that air conditioning system is located and is converted to resistance value, and
The resistance value is converted to the first voltage and is sent to the voltage comparator.
3. the detection means of secondary refrigerant leakage according to claim 2, it is characterised in that
The surface of the gas sensor is provided with through hole, and the gas sensor is by the indoor environment that is located with air conditioning system
Carry out air-flow exchange.
4. the detection means of secondary refrigerant leakage according to claim 1, it is characterised in that
The indoor set master control borad is additionally operable to after the coolant for judging air conditioning system is leaked, and controls the air conditioning system to stop
Machine.
5. the detection means of secondary refrigerant leakage according to claim 1, it is characterised in that
The voltage comparator specifically for when the first voltage more than the predeterminated voltage when, export low level signal, when
When the first voltage is less than the predeterminated voltage, high level signal is exported.
6. a kind of detection method of secondary refrigerant leakage, it is characterised in that for controlling the coolant described in any one of claim 1-5 to let out
The detection means of dew carries out the detection of secondary refrigerant leakage, and methods described includes：
The cold media gas concentration of the indoor environment that air conditioning system is located is converted to first voltage；
Judge whether the first voltage is more than predeterminated voltage and draws judged result；
Whether leaked according to the coolant that the judged result judges air conditioning system.
7. the detection method of secondary refrigerant leakage according to claim 6, it is characterised in that the indoor ring that air conditioning system is located
The cold media gas concentration in border is converted to first voltage, including：
The cold media gas concentration of the indoor environment that air conditioning system is located is converted to resistance value, the resistance value is converted to described
First voltage.
8. the detection method of secondary refrigerant leakage according to claim 6, it is characterised in that judge that the coolant of air conditioning system occurs
After leakage, methods described also includes, controls the air conditioning system to shut down.
9. the detection method of secondary refrigerant leakage according to claim 6, it is characterised in that judge whether the first voltage is big
In the predeterminated voltage and judged result is drawn, including：
Judge whether the first voltage is more than the predeterminated voltage and exports corresponding level signal；
When the first voltage is more than the predeterminated voltage, low level signal is exported；
When the first voltage is less than the predeterminated voltage, high level signal is exported.
10. a kind of air-conditioning, it is characterised in that the air-conditioning includes the detection of the secondary refrigerant leakage described in any one of claim 1-5
Device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611046799.3A CN106440584B (en) | 2016-11-23 | 2016-11-23 | A kind of detection device of secondary refrigerant leakage, method and air-conditioning |
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| CN201611046799.3A CN106440584B (en) | 2016-11-23 | 2016-11-23 | A kind of detection device of secondary refrigerant leakage, method and air-conditioning |
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| CN106440584B CN106440584B (en) | 2018-10-19 |
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| CN109631229A (en) * | 2019-01-31 | 2019-04-16 | 四川长虹空调有限公司 | The determination method of refrigeration system refrigerant fast leak |
| CN109708247A (en) * | 2018-12-11 | 2019-05-03 | 宁波奥克斯电气股份有限公司 | A kind of control method, control device and the air conditioner of combustibility secondary refrigerant leakage |
| CN110346162A (en) * | 2019-07-16 | 2019-10-18 | 湖北省泰路科技有限公司 | Air conditioning for automobiles diagnostic method, system and equipment |
| CN110848874A (en) * | 2018-08-21 | 2020-02-28 | 奥克斯空调股份有限公司 | Air conditioner refrigerant leakage detection method and device |
| CN112105876A (en) * | 2018-05-10 | 2020-12-18 | 三菱电机株式会社 | Refrigerant leakage determination device, air conditioner, and refrigerant leakage determination method |
| CN112584934A (en) * | 2018-06-15 | 2021-03-30 | 埃佩多夫股份公司 | Temperature control centrifuge with collision protection |
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| CN106958969A (en) * | 2017-05-27 | 2017-07-18 | 天津天商酷凌科技有限公司 | A kind of secondary refrigerant leakage supervising device of refrigeration system |
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| CN110346162A (en) * | 2019-07-16 | 2019-10-18 | 湖北省泰路科技有限公司 | Air conditioning for automobiles diagnostic method, system and equipment |
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