CN106440584B - A kind of detection device of secondary refrigerant leakage, method and air-conditioning - Google Patents
A kind of detection device of secondary refrigerant leakage, method and air-conditioning Download PDFInfo
- Publication number
- CN106440584B CN106440584B CN201611046799.3A CN201611046799A CN106440584B CN 106440584 B CN106440584 B CN 106440584B CN 201611046799 A CN201611046799 A CN 201611046799A CN 106440584 B CN106440584 B CN 106440584B
- Authority
- CN
- China
- Prior art keywords
- voltage
- air
- conditioning system
- master control
- indoor unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention provides a kind of detection device of secondary refrigerant leakage, method and air-conditioning, is related to air-conditioning technical field, for detecting whether the refrigerant in air-conditioning system is revealed.The detection device includes：The indoor unit master control borad of detection circuit, voltage comparator and air-conditioning system, wherein detection circuit may be contained within the inside of air-conditioning system with voltage comparator and be connected with indoor unit master control borad；Detection circuit is for being converted to first voltage by the cold media gas concentration of the indoor environment where air-conditioning system and being sent to voltage comparator；Voltage comparator is for judging whether first voltage is more than predeterminated voltage and will determine that result is sent to indoor unit master control borad；Indoor unit master control borad is used to judge whether the refrigerant of air-conditioning system leaks according to judging result.The present invention is applied to the detection of secondary refrigerant leakage.
Description
Technical field
The present invention relates to a kind of air-conditioning technical field more particularly to detection device of secondary refrigerant leakage, method and air-conditionings.
Background technology
With the development of society, the domestic environment of green and healthy safe and intelligent is increasingly pursued by user, air-conditioning
Using no exception, air-conditioning has become one of essential household electrical appliances of people at present.Refrigerant plays in air-conditioning system operation
Important role generates refrigerating effect, realizes the function of air-conditioning system to transferring heat energy.
In air-conditioning system operational process, refrigerant enters evaporation endothermic in evaporator, makes the cold water temperature for being passed through evaporator
It is declined to become chilled water, chilled water carries out heat exchange by the surface cooler in air-conditioning equipment with processed air again later, makes
Air themperature reduces.Once refrigerant leaks air-conditioning system in the process of running, air-conditioning system is because lack refrigerant to compression
Cool around machine, temperature is excessively high during causing compressor operating, relevant protection device such as overload protective device meeting and
When disconnect compressor power circuit, to protect compressor, when temperature reaches it is normal when, protective device can restart compressor
Resume work, can so lead to compressor for a long time and break down because oil starvation operates, cause many safety problems.
Invention content
The present invention provides a kind of detection device of secondary refrigerant leakage, method and air-conditioning, for detecting the refrigerant in air-conditioning system
Whether reveal.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that：
In a first aspect, providing a kind of detection device of secondary refrigerant leakage, which includes：
The indoor unit master control borad of detection circuit, voltage comparator and air-conditioning system, wherein the detection circuit with it is described
Voltage comparator may be contained within the inside of the air-conditioning system and be connected with the indoor unit master control borad；
The detection circuit is used to the cold media gas concentration of the indoor environment where air-conditioning system being converted to first voltage
And it is sent to the voltage comparator；
The voltage comparator is for judging whether the first voltage is more than predeterminated voltage and will determine that result is sent to
The indoor unit master control borad；
The indoor unit master control borad is used to judge whether the refrigerant of air-conditioning system leaks according to the judging result.
Second aspect provides a kind of detection method of secondary refrigerant leakage, for controlling the secondary refrigerant leakage described in first aspect
Detection device carries out the detection of secondary refrigerant leakage, the method includes：
The cold media gas concentration of indoor environment where air-conditioning system is converted into first voltage；
Judge whether the first voltage is more than predeterminated voltage and obtains judging result；
Judge whether the refrigerant of air-conditioning system leaks according to the judging result.
The third aspect, provides a kind of air-conditioning, and the air-conditioning includes the detection device of the secondary refrigerant leakage described in first aspect.
A kind of detection device of secondary refrigerant leakage provided in an embodiment of the present invention includes：Detection circuit, voltage comparator and
The indoor unit 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 to the cold media gas concentration of the indoor environment where air-conditioning system being converted to the first electricity
It presses and is sent to voltage comparator；Voltage comparator is used to judge whether first voltage to be more than predeterminated voltage and will determine that result is sent out
Give indoor unit master control borad；Indoor unit master control borad is used to judge whether the refrigerant of air-conditioning system leaks according to judging result.
Because the detection device of secondary refrigerant leakage provided in an embodiment of the present invention can be by the refrigerant gas of the indoor environment where air-conditioning system
Bulk concentration is converted to first voltage and judges whether first voltage is more than predeterminated voltage, and air-conditioning system can be determined by judging result
Whether the refrigerant of system leaks, so the detection device of secondary refrigerant leakage provided in an embodiment of the present invention can be used for detecting air-conditioning
Whether the refrigerant in system is revealed.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is one of the detection device schematic diagram of secondary refrigerant leakage provided in an embodiment of the present invention；
Fig. 2 is the two of the detection device schematic diagram of secondary refrigerant leakage provided in an embodiment of the present invention；
Fig. 3 is variety classes refrigerant provided in an embodiment of the present invention corresponding resistance value curve graph under various concentration；
Fig. 4 is the three of the detection device schematic diagram of secondary refrigerant leakage provided in an embodiment of the present invention；
Fig. 5 is one of the 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 implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It should be noted that the printed words such as " first ", " second " in the application be used for the purpose of it is basic to function and effect
Identical identical entry or similar item distinguish, and the printed words such as " first ", " second " are not to quantity and execution order progress
It limits.
The embodiment of the present invention provides a kind of detection device of secondary refrigerant leakage, shown referring to Fig.1, which includes detection electricity
The indoor unit master control borad 03 on road 01, voltage comparator 02 and air-conditioning system, wherein detection circuit 01 are equal with voltage comparator 02
It is set to the inside of air-conditioning system and is connected with indoor unit master control borad 03.
Detection circuit 01 is used to the cold media gas concentration of the indoor environment where air-conditioning system being 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 where air-conditioning system and in output end
Corresponding voltage, i.e. first voltage are exported, the first voltage that output end exports is sent to voltage and compared by wherein detection circuit 01
" ﹣ " input terminal of device 02.
Voltage comparator 02 is for judging whether first voltage is more than predeterminated voltage and will determine that result is sent to indoor unit
Master control borad 03.
Specifically, with reference to shown in Fig. 2, " ﹢ " input terminal the first divider resistance 04 of connection of voltage comparator 02, this first point
Piezoresistance 04 can make supply voltage input a scheduled voltage, i.e. predeterminated voltage, the predeterminated voltage to voltage comparator 02
The corresponding voltage of cold media gas intensity reference value is specially preset, with reference to shown in Fig. 3, different types of refrigerant is under various concentration
A corresponding resistance value, by a reference value for determining default refrigerant 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.
Illustratively, with reference to shown in Fig. 3, when the type of refrigerant is R-134a type refrigerants, cold media gas concentration base is preset
When quasi- value is 100ppm, R-134a types refrigerant 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 voltage value of cold media gas intensity reference value is preset.
Specifically, the judging result of voltage comparator 02 is output low level signal or output high level signal, voltage ratio
" ﹣ " input terminal compared with device 02 accesses first voltage, and " ﹢ " input terminal 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 unit master control borad 03, voltage comparator
Whether 02 can be more than predeterminated voltage according to first voltage exports corresponding level signal, when first voltage is more than predeterminated voltage
When, voltage comparator 02 exports low level signal and external input pin that this low level signal is passed through indoor unit master control borad 03
It is sent to indoor unit master control borad 03, when first voltage is less than predeterminated voltage, voltage comparator 02 exports high level signal and will
This high level signal is sent to indoor unit master control borad 03 by the external input pin of indoor unit master control borad 03.
Indoor unit master control borad 03 is used to judge whether the refrigerant of air-conditioning system leaks according to judging result.
Specifically, when indoor unit master control borad 03 receives the low level signal of the output of voltage comparator 02, i.e., the first electricity
The level signal that voltage comparator 02 exports when pressure is more than predeterminated voltage, the intelligence system of indoor unit master control borad 03 pass through low level
Signal can be determined that the refrigerant of air-conditioning system leaks, when indoor unit master control borad 03 receives the height of the output of voltage comparator 02
When level signal, i.e., the level signal that voltage comparator 02 exports when first voltage is less than predeterminated voltage, indoor unit master control borad 03
Intelligence system can be determined that the refrigerant of air-conditioning system does not leak by high level signal.
A kind of detection device of secondary refrigerant leakage provided in an embodiment of the present invention includes：Detection circuit, voltage comparator and
The indoor unit 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 to the cold media gas concentration of the indoor environment where air-conditioning system being converted to the first electricity
It presses and is sent to voltage comparator；Voltage comparator is used to judge whether first voltage to be more than predeterminated voltage and will determine that result is sent out
Give indoor unit master control borad；Indoor unit master control borad is used to judge whether the refrigerant of air-conditioning system leaks according to judging result.
Because the detection device of secondary refrigerant leakage provided in an embodiment of the present invention can be by the refrigerant gas of the indoor environment where air-conditioning system
Bulk concentration is converted to first voltage and judges whether first voltage is more than predeterminated voltage, and air-conditioning system can be determined by judging result
Whether the refrigerant of system leaks, so the detection device of secondary refrigerant leakage provided in an embodiment of the present invention can be used for detecting air-conditioning
Whether the refrigerant in system is revealed.
Optionally, the detection circuit in the detection device of secondary refrigerant leakage provided in an embodiment of the present invention includes gas sensing
The input terminal of device, gas sensor connects the first level terminal, and the output end of gas sensor connects voltage comparator.
Gas sensor is used to the cold media gas concentration of the indoor environment where air-conditioning system being converted to resistance value, and
Resistance value is converted into first voltage and is sent to voltage comparator.
Specifically, with reference to shown in Fig. 4, which includes gas sensor 05 and the second divider resistance 06, second
The resistance value of divider resistance 06 is RL, and the input terminal of gas sensor 05 connects the first level terminal VC, gas sensor 05 it is defeated
Outlet connects voltage comparator 02, the output end 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, respective change also occurs for conductivity, therefore the resistance value RS of gas sensor 05 changes, detection
Circuit 01 according to the resistance value RS of gas sensor 05 and the second divider resistance 06 in the corresponding voltage VRL of output end output, i.e.,
First voltage, wherein the specific algorithm formula of first voltage VRL are：VRL=(VC × RL)/(RS+RL), detection circuit 01 will be defeated
The first voltage VRL of outlet output is sent to " ﹣ " input terminal of voltage comparator 02.
Illustratively, which can be TGS832-A00 type sensors, TGS832-A00 type sensors pair
Cold media gas has higher sensitivity, and the sensitive sub-prime of GS832-A00 type sensors is made of stannic oxide semiconductor, clear
Conductivity is very low in clean air, in the presence of detected gas in air, the conductivity of the higher sensor of the gas concentration
It can be higher.
Optionally, the surface of gas sensor 05 is provided with through-hole, gas sensor 05 by with where air-conditioning system
Indoor environment carries out air-flow exchange.
Specifically, being provided with gas heat emission hole on the block of the gas sensor 05 and pedestal, which can
Accelerate air-flow flowing by pumping principle and carry out air-flow with the indoor environment where air-conditioning system to exchange, 05 energy of gas sensor
The cold media gas concentration of indoor environment where enough quickly detection response air-conditioning systems.
The gas sensor that detection circuit includes in the detection device of secondary refrigerant leakage provided in an embodiment of the present invention, gas pass
The input terminal of sensor connects the first level terminal, and the output end of gas sensor connects voltage comparator.Gas sensor is used for will
The cold media gas concentration of indoor environment where air-conditioning system 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 voltage value by detection circuit by gas sensor
And it is sent to voltage comparator, to judge first voltage and the magnitude relationship of predeterminated voltage by voltage comparator, and pass through
Indoor unit master control borad judges whether the refrigerant of air-conditioning system leaks according to the judging result of voltage comparator.
Optionally, the indoor unit master control borad in the detection device of secondary refrigerant leakage provided in an embodiment of the present invention is additionally operable to sentencing
Determine air-conditioning system refrigerant leak after, control air-conditioning system shut down.
Refer to specifically, line control machine sends control by the external input pin of indoor unit master control borad to indoor unit master control borad
It enables, for the corresponding display word of the instruction that line control machine is sent to indoor unit master control borad with reference to shown in table 1, user is defeated to line control machine
After entering 03 instruction in following table, i.e., " long-range start-stop 1 " instructs, and line control machine sends " long-range start-stop 1 " control to indoor unit master control borad
Instruction, while which is sent to the external input pin of indoor unit master control borad, only passes through the outside of indoor unit master control borad
Input pin receives a low level signal and is triggered to the instruction, and " long-range start-stop 1 " control instruction could be by indoor unit
Master control borad is received and is executed instruction, that is, when indoor unit 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 " that line control machine is sent and instructs and control air-conditioning system shutdown.
| Show word | Input |
| 00 | It does not set |
| 01 | Room temperature control (refrigeration) |
| 02 | Room temperature control (heating) |
| 03 | Long-range start-stop 1 |
| 04 | Long-range start-stop 2 (operating) |
| 05 | Long-range start-stop 2 (stopping) |
| 06 | The line control machine after stopping is forced to be forbidden |
| 07 | Long-range cold and hot switching |
| 08 | Nothing |
Table 1
Illustratively, when the cold media gas concentration of the indoor environment where air-conditioning system is more than default cold media gas concentration base
When quasi- value, i.e. the refrigerant of air-conditioning system leaks, and first voltage is more than predeterminated voltage, and voltage comparator exports low level letter
Number, " the long-range start-stop 1 " that indoor unit master control borad receives the low level signal of voltage comparator output and sent by line control machine
Instruction control air-conditioning system is shut down.When the cold media gas concentration of the indoor environment where air-conditioning system is dense less than default cold media gas
When spending a reference value, i.e. the refrigerant of air-conditioning system does not leak, and first voltage is less than predeterminated voltage, the high electricity of voltage comparator output
Ordinary mail number, at this time indoor unit master control borad do not receive " long-range start-stop 1 " instruction of line control machine transmission, air-conditioning system keeps normal fortune
Row.
Indoor unit master control borad is used in judgement air-conditioning in the detection device of the secondary refrigerant leakage provided through the embodiment of the present invention
Control air-conditioning system is shut down after the refrigerant of system leaks, compressor after can preventing the refrigerant in air-conditioning system from revealing
Protective device is frequently switched on to shut down and break down so as to cause the operating of protective device oil starvation, reduces the compressor in air-conditioning system
The damage of equal electric components.
Yet another embodiment of the invention provides a kind of detection method of secondary refrigerant leakage, for controlling the refrigerant in above-described embodiment
The detection device of leakage carries out the detection of secondary refrigerant leakage, and referring to Figure 5, this method includes：
S01, the cold media gas concentration of the indoor environment where air-conditioning system is converted into first voltage.
Specifically, detection circuit detects the cold media gas concentration of the indoor environment where air-conditioning system and defeated in output end
Go out corresponding voltage, i.e. first voltage.
S02, judge whether first voltage is more than predeterminated voltage and obtains judging result.
Specifically, " ﹣ " input terminal of voltage comparator accesses first voltage, " ﹢ " input terminal access of voltage comparator is pre-
If voltage, voltage comparator is by judging whether first voltage is more than predeterminated voltage and will determine that result is sent to indoor unit master control
Plate.
The indoor unit master control borad of air-conditioning system judges whether the refrigerant of air-conditioning system leaks according to judging result.If the
One voltage is more than predeterminated voltage, executes step S03, if first voltage is less than predeterminated voltage, executes step S04.
S03, air-conditioning system refrigerant leak.
Specifically, when the judging result that indoor unit master control borad receives voltage comparator is that first voltage is more than default electricity
Pressure, the intelligence system of indoor unit master control borad can be determined that the refrigerant of air-conditioning system leaks by this judging result.
S04, air-conditioning system refrigerant do not leak.
Specifically, when the judging result that indoor unit master control borad receives voltage comparator is that first voltage is less than default electricity
Pressure, the intelligence system of indoor unit master control borad can be determined that the refrigerant of air-conditioning system does not leak by this judging result.
Because the detection method of secondary refrigerant leakage provided in an embodiment of the present invention can be by the indoor environment where air-conditioning system
Cold media gas concentration be converted to first voltage and judge first voltage whether be more than predeterminated voltage, can be true by judging result
Whether the refrigerant 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 refrigerant in detection air-conditioning system is revealed.
Further, with reference to shown in Fig. 6, an embodiment of the present invention provides above-mentioned steps S01 by the room where air-conditioning system
The cold media gas concentration of interior environment is converted to the realization method of first voltage, specific as follows：
S011, the cold media gas concentration of the indoor environment where air-conditioning system is converted into resistance value.
Specifically, when the gas sensor in detection circuit detects that the concentration of cold media gas changes, conductance
Respective change also occurs for rate, therefore the resistance value RS of gas sensor changes, and gas sensor is according to the dense of cold media gas
Degree obtains corresponding resistance value RS.
S012, resistance value is converted into first voltage.
Specifically, detection circuit is answered with the second divider resistance in output end the output phase according to the resistance value RS of gas sensor
Voltage VRL, i.e. first voltage, wherein the resistance value of the second divider resistance is RL, the specific algorithm formula of first voltage VRL
For：The first voltage VRL that output end exports is sent to voltage comparator by VRL=(VC × RL)/(RS+RL), detection circuit
" ﹣ " input terminal.
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 voltage value and is sent to voltage comparator, to be judged by voltage comparator
The magnitude relationship of first voltage and predeterminated voltage, and sky is judged according to the judging result of voltage comparator by indoor unit master control borad
Whether the refrigerant of adjusting system leaks.
Further, with reference to shown in Fig. 7, an embodiment of the present invention provides above-mentioned steps S02 to judge whether first voltage is big
In predeterminated voltage and obtain the realization method of judging result, it is specific as follows, when judging result is that first voltage is more than predeterminated voltage
When, step S022 is executed, when judging result is that first voltage is less than predeterminated voltage, executes step S023.
S021, judge whether first voltage is 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, which is more than predeterminated voltage, exports corresponding level signal.
S022, output low level signal.
Specifically, when first voltage is more than predeterminated voltage, voltage comparator exports low level signal and by this low level
Signal is sent to indoor unit master control borad by the external input pin of indoor unit master control borad.
S023, output high level signal.
Specifically, when first voltage is less than predeterminated voltage, voltage comparator exports high level signal and by this high level
Signal is sent to indoor unit master control borad by the external input pin of indoor unit master control borad.
Optionally, with reference to shown in Fig. 8, the detection method for the secondary refrigerant leakage that any of the above-described embodiment provides, in judgement air-conditioning
After the refrigerant of system leaks, this method further includes：
S05, control air-conditioning system are shut down.
Refer to specifically, line control machine sends control by the external input pin of indoor unit master control borad to indoor unit master control borad
It enables, for the corresponding display word of the instruction that line control machine is sent to indoor unit master control borad with reference to shown in table 1, user is defeated to line control machine
After entering 03 instruction in following table, i.e., " long-range start-stop 1 " instructs, and line control machine sends " long-range start-stop 1 " control to indoor unit master control borad
Instruction, while which is sent to the external input pin of indoor unit master control borad, only passes through the outside of indoor unit master control borad
Input pin receives a low level signal and is triggered to the instruction, and " long-range start-stop 1 " control instruction could be by indoor unit
Master control borad is received and is executed instruction, that is, when indoor unit 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 " that line control machine is sent and instructs and control air-conditioning system shutdown.
Indoor unit master control borad is used in judgement air-conditioning system in the detection method of secondary refrigerant leakage provided in an embodiment of the present invention
Refrigerant leak after control air-conditioning system shut down, compressor protection after can preventing the refrigerant in air-conditioning system from revealing
Device is frequently switched on to shut down and break down so as to cause the operating of protective device oil starvation, reduces the electricity such as the compressor in air-conditioning system
The damage of gas component.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, all answer by the change or replacement that can be readily occurred in
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (6)
1. a kind of detection device of secondary refrigerant leakage, which is characterized in that the device includes：
The indoor unit 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 be connected with the indoor unit master control borad；
The detection circuit is used to the cold media gas concentration of the indoor environment where air-conditioning system being converted to first voltage concurrent
Give the voltage comparator；
The voltage comparator is used to judge whether the first voltage to be more than predeterminated voltage and it is described to will determine that result is sent to
Indoor unit master control borad；
The indoor unit master control borad is used to judge whether the refrigerant of air-conditioning system leaks according to the judging result；
Wherein, the detection circuit includes gas sensor and the second divider resistance, and the resistance value of second divider resistance is
The input terminal of RL, the gas sensor connect the first level terminal VC, and the output end of the gas sensor connects the voltage
The first end of comparator, second divider resistance connects the output end of the gas sensor, second divider resistance
Second end connects second electrical level end GND；
Voltage comparator " ﹢ " input terminal connects the first divider resistance, and first divider resistance makes supply voltage to described
Voltage comparator inputs predeterminated voltage, and the predeterminated voltage is the corresponding voltage of default cold media gas intensity reference value；
The gas sensor detects that cold media gas concentration changes, and the resistance value RS of the gas sensor becomes
Change, the detection circuit is according to the resistance value RS and second divider resistance of the gas sensor described in output end output
First voltage VRL, wherein the algorithmic formula of the first voltage VRL is：VRL=(VC × RL)/(RS+RL), the detection electricity
The first voltage VRL that the output end exports is sent to " ﹣ " input terminal of the voltage comparator by road.
2. the detection device of secondary refrigerant leakage according to claim 1, which is characterized in that
The detection circuit includes gas sensor, and the input terminal of the gas sensor connects the first level terminal, the gas
The output end of sensor connects the voltage comparator；
The gas sensor is used to the cold media gas concentration of the indoor environment where air-conditioning system being converted to resistance value, and
The resistance value is converted into the first voltage and is sent to the voltage comparator.
3. the detection device of secondary refrigerant leakage according to claim 2, which is characterized in that
The surface of the gas sensor is provided with through-hole, the gas sensor by with the indoor environment where air-conditioning system
Carry out air-flow exchange.
4. the detection device of secondary refrigerant leakage according to claim 1, which is characterized in that
The indoor unit master control borad is additionally operable to after the refrigerant of judgement air-conditioning system leaks, and is controlled the air-conditioning system and is stopped
Machine.
5. the detection device of secondary refrigerant leakage according to claim 1, which is characterized in that
The voltage comparator is specifically used for, when the first voltage is more than the predeterminated voltage, exporting low level signal, when
When the first voltage is less than the predeterminated voltage, high level signal is exported.
6. a kind of air-conditioning, which is characterized in that the air-conditioning includes the detection dress of claim 1-5 any one of them secondary refrigerant leakages
It sets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611046799.3A CN106440584B (en) | 2016-11-23 | 2016-11-23 | A kind of detection device of secondary refrigerant leakage, method and air-conditioning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611046799.3A CN106440584B (en) | 2016-11-23 | 2016-11-23 | A kind of detection device of secondary refrigerant leakage, method and air-conditioning |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106440584A CN106440584A (en) | 2017-02-22 |
| CN106440584B true CN106440584B (en) | 2018-10-19 |
Family
ID=58219270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611046799.3A Active CN106440584B (en) | 2016-11-23 | 2016-11-23 | A kind of detection device of secondary refrigerant leakage, method and air-conditioning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106440584B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US11435102B2 (en) * | 2018-05-10 | 2022-09-06 | Mitsubishi Electric Corporation | Refrigerant leakage determination device, air-conditioning apparatus, and refrigerant leakage determination method |
| DE102018114450A1 (en) * | 2018-06-15 | 2019-12-19 | Eppendorf Ag | Temperature-controlled centrifuge with crash protection |
| CN110848874B (en) * | 2018-08-21 | 2021-04-27 | 奥克斯空调股份有限公司 | Air conditioner refrigerant leakage detection method and device |
| 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 |
| CN109631229B (en) * | 2019-01-31 | 2020-10-09 | 四川长虹空调有限公司 | Method for judging rapid leakage of refrigerant of refrigeration system |
| CN110346162B (en) * | 2019-07-16 | 2021-07-09 | 湖北省泰路科技有限公司 | Automobile air conditioner diagnosis method, system and equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1392944A (en) * | 2000-09-26 | 2003-01-22 | 大金工业株式会社 | Air conditioner |
| CN101418982A (en) * | 2007-10-23 | 2009-04-29 | 海尔集团公司 | Application of mixed gas sensor in air conditioner |
| CN202166155U (en) * | 2011-08-01 | 2012-03-14 | 黄淮学院 | Intelligent indoor air quality monitoring and adjusting device |
| CN102753898A (en) * | 2010-02-10 | 2012-10-24 | 三菱电机株式会社 | Air-conditioning device |
| EP2669607A1 (en) * | 2011-01-26 | 2013-12-04 | Mitsubishi Electric Corporation | Air conditioner device |
| CN104633864A (en) * | 2015-02-05 | 2015-05-20 | 珠海格力电器股份有限公司 | Refrigerant leakage detection method and device for air conditioner and air conditioner outdoor unit |
-
2016
- 2016-11-23 CN CN201611046799.3A patent/CN106440584B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1392944A (en) * | 2000-09-26 | 2003-01-22 | 大金工业株式会社 | Air conditioner |
| CN101418982A (en) * | 2007-10-23 | 2009-04-29 | 海尔集团公司 | Application of mixed gas sensor in air conditioner |
| CN102753898A (en) * | 2010-02-10 | 2012-10-24 | 三菱电机株式会社 | Air-conditioning device |
| EP2669607A1 (en) * | 2011-01-26 | 2013-12-04 | Mitsubishi Electric Corporation | Air conditioner device |
| CN202166155U (en) * | 2011-08-01 | 2012-03-14 | 黄淮学院 | Intelligent indoor air quality monitoring and adjusting device |
| CN104633864A (en) * | 2015-02-05 | 2015-05-20 | 珠海格力电器股份有限公司 | Refrigerant leakage detection method and device for air conditioner and air conditioner outdoor unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106440584A (en) | 2017-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106440584B (en) | A kind of detection device of secondary refrigerant leakage, method and air-conditioning | |
| CN105485856B (en) | Method for detecting abnormality under air-conditioning system and air-conditioning system heating state | |
| CN104633864B (en) | Refrigerant leakage detection method and device for air conditioner and air conditioner outdoor unit | |
| US11236921B2 (en) | Method for controlling window air conditioner | |
| CN105546770B (en) | The control method for frequency and air-conditioning of air-conditioning | |
| US11378316B2 (en) | Diagnostic mode of operation to detect refrigerant leaks in a refrigeration circuit | |
| CN109595741A (en) | Air-conditioning and its coolant leakage detection method and device | |
| JP6861804B2 (en) | Air conditioner | |
| CN103884480A (en) | Refrigerant leak detection method, refrigerant leak detection system and air conditioner | |
| EP3633282B1 (en) | Air conditioning device | |
| EP3441689B1 (en) | Air conditioner | |
| CN106839283A (en) | The detection method of coolant leakage | |
| US11609046B2 (en) | Detecting loss of charge in HVAC systems | |
| CN107560101A (en) | A kind of fault detection method of air conditioner electronic expansion valve | |
| CN105423484B (en) | A kind of insufficient detection method of air-conditioning refrigerant and detection circuit | |
| CN115854488A (en) | Air conditioning equipment and fault detection method | |
| CN110887165A (en) | Refrigerant leakage detection method and device and air conditioner | |
| CN111486612A (en) | Multi-split air conditioning system, heating valve leakage detection method and device thereof, and storage medium | |
| KR102150441B1 (en) | Air conditioner | |
| CN111503948A (en) | Multi-split air conditioning system, method and device for detecting leakage of refrigeration valve of multi-split air conditioning system and storage medium | |
| EP3674621B1 (en) | Air conditioner | |
| CN109000337A (en) | A kind of leakage of refrigerant guard method | |
| US11976830B2 (en) | Air-conditioning apparatus | |
| CN207035939U (en) | Handpiece Water Chilling Units blower fan of cooling tower automatic control system | |
| CN206919478U (en) | Air conditioner control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |