CN104567158B - System and method for controlling leakage amount of refrigerant of refrigerator system - Google Patents
System and method for controlling leakage amount of refrigerant of refrigerator system Download PDFInfo
- Publication number
- CN104567158B CN104567158B CN201410802925.8A CN201410802925A CN104567158B CN 104567158 B CN104567158 B CN 104567158B CN 201410802925 A CN201410802925 A CN 201410802925A CN 104567158 B CN104567158 B CN 104567158B
- Authority
- CN
- China
- Prior art keywords
- refrigerating fluid
- pressure
- refrigerator
- control unit
- leakage rate
- 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.)
- Expired - Fee Related
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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- 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
-
- 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
- F25B49/022—Compressor control arrangements
-
- 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
- F25B2500/221—Preventing leaks from developing
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Examining Or Testing Airtightness (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a system and a method for controlling leakage amount of a refrigerant of a refrigerator system. The method has the advantages that by additionally arranging sectional separating valves in a circulating pipeline of a refrigerating system of the refrigerator system, the circulating pipeline of the refrigerating system is separated into a plurality of sections; when the sectional separating valves are opened under the condition of normal working of the refrigerating system, the influence on the normal working of the refrigerator system is avoided; a pressure sensor is arranged in the circulating pipeline of the refrigerating system, and the pressure data of the pressure sensor and the data of a sensitive gas probe are sent into a collecting control unit; when the pressure data of the circulating pipeline of the refrigerating system exceeds the setting range or the change slope exceeds the normal range, or the sensitive gas probe sends a warning signal, the collecting control unit starts the control signal, and the sectional isolation valves are closed, so the leakage amount of the refrigerant is controlled, and the leakage concentration cannot reach the concentration of a combustible and explosive point.
Description
Technical field
The present invention relates to refrigeration technology field, more particularly, to a kind of system controlling refrigerating fluid leakage rate in refrigerator system
And method.
Background technology
Refrigerating fluid refers to that constantly circulating and pass through the state change of itself in the circulation line of refrigeration system realizes
The operation material of refrigeration, its operation principle may be summarized to be：Refrigerating fluid absorbs cooled medium (water or air in vaporizer
Deng) heat and vaporize, transfer heat to surrounding air or water within the condenser and condense.
Fig. 1 show a kind of structural representation of existing typical refrigerator system, including compressor 1, condenser 2, steams
Send out device 3, expansion valve 4, fluid reservoir 5 and the refrigeration system circulating line connecting said system.Existing refrigeration system extensively makes
Refrigerating fluid major part is freon.Freon can damage to atmospheric ozone layer, and accelerates the generation of greenhouse effect.Base
In these factors, some new refrigerating fluids are gradually applied in refrigeration system.Although some New Refrigerating liquid are nontoxic at present,
Also have good performance on environmental protection and energy saving, atmospheric ozone layer will not be damaged, but its have in certain temperature and
Flammable under concentration, explosive characteristic.When this New Refrigerating liquid occurs leakage, if reaching certain concentration, when running into fire
Flower, very likely occur when high temperature burning even to explode, there is very big potential safety hazard, therefore, this characteristic is one
Determine the use occasion of New Refrigerating liquid is limited on degree.
Refrigeration system can be made to exist with the system and method for effective control refrigerating fluid leakage rate therefore, it is necessary to proposition is a kind of
After detecting refrigerating fluid leakage, can timely and effectively control the leakage rate of refrigerating fluid so that the refrigerating fluid of leakage is unlikely to reach
To combustible concentration, improve the security performance of refrigeration system.
Content of the invention
It is an object of the invention to provide a kind of system controlling refrigerating fluid leakage rate in refrigerator system, can be to refrigeration
The working condition of machine system carries out monitor in real time, and can be with the leakage rate of effective control refrigerating fluid during refrigerating fluid generation leakage.
Another object of the present invention is to providing a kind of method controlling refrigerating fluid leakage rate in refrigerator system, Neng Gou
Detect refrigerating fluid in the very first time leaks and sends alarm, and the amount of the refrigerating fluid that simultaneously can will leak out controls in time is letting out
Leakage section, it is to avoid because refrigerating fluid leaks the danger such as burning or the blast of excessive concentration initiation.
For achieving the above object, the present invention provides a kind of system controlling refrigerating fluid leakage rate in refrigerator system, described
Refrigerator system includes compressor, condenser, vaporizer, expansion valve and the refrigeration system circulating line connecting said apparatus,
In described control refrigerator system, the system of refrigerating fluid leakage rate includes：
Staged isolation valve, is installed in refrigeration system circulating line, refrigeration system circulating line can be divided into several sections, and
It is controlled by acquisition control unit, under refrigerating fluid No leakage state, staged isolation valve is opening, does not affect refrigeration machine system
The normal work of system, when refrigerating fluid occurs leakage, acquisition control unit controls staged isolation valve closing, and refrigeration system is followed
Endless tube road is divided into several sections, thus limiting the leakage rate of refrigerating fluid；
Pressure transducer, is installed in refrigeration system circulating line at different paragraphs, by refrigeration system circulating line
Pressure data and rate of pressure change pass to acquisition control unit；
Several sensitive gas probes, are arranged on outside refrigeration system circulating line, are placed near indoor easily leakage point, work as detection
During to refrigerating fluid gas, send refrigerating fluid leakage alarm to acquisition control unit；
Compressor operating state sensor, collect and process machine working condition, pass to acquisition control unit；
Safety relief valve, is connected on refrigeration system circulating line outdoor section, and no refrigerating fluid is in closing when leaking
State, is controlled by acquisition control unit, and when refrigerating fluid leakage is detected, safety relief valve is opened, and refrigerating fluid is leaked into
Outdoor, or be retracted to by force in collecting tank, when refrigeration system is less, staged isolation valve can not be installed, only using peace
Full pressure relief valve is discharged the refrigerating fluid in circulating line in outdoor or is retracted in collecting tank, controls indoor refrigerating fluid leakage rate
Concentration, after being mounted with staged isolation valve, safety relief valve can choose to install as the case may be；
Acquisition control unit, the announcement of the pressure data of collection pressure transducer, rate of pressure change and sensitive gas probe
Alert signal, in conjunction with the working condition of compressor, when judgement has, pressure data is exceeded, pressure change slope is abnormal or receives
During the warning signal of sensitive gas probe, start control signal, close staged isolation valve, the compressor of closing refrigerator system
Power supply, open safety relief valve and indoor air exhaust system, and send warning signal to attendant；
Indoor air exhaust system, is controlled by acquisition control unit, when refrigerating fluid leakage is detected, opens indoor exhaust wind system
System, the refrigerating fluid that will leak out indoors is rejected to outdoor.
The quantity of described staged isolation valve is N number of (N=0,2,3,4 ...), and refrigeration system circulating line is divided into number
Section, and as N=0, need safety relief valve is installed.
Described staged isolation valve is electromagnetic valve or other Controlled valve.
The quantity of described pressure transducer is M (M=0,1,2,3,4 ...), is arranged on refrigeration system circulating line not
Same position, as M=0, relies on sensitive gas probe to detect whether to leak.
Described compressor operating state sensor is in addition to install additional or the value refrigerator system delivery outlet of itself.
Described safety relief valve is a kind of execution unit of simplify control refrigerating fluid leakage rate, can according to circumstances select
Join.
Described acquisition control unit, is to be made up of gathered data module, logical operation module and output control instruction module.
Described indoor air exhaust system is in addition to install additional or by means of existed system.
Described refrigerator system is general refrigerator system, controls the system of refrigerating fluid leakage rate in refrigerator system to add
It is loaded in wherein, and do not affect the refrigeration performance of former refrigerator system.
The present invention also provides a kind of method controlling refrigerating fluid leakage rate in refrigerator system, is provided with this refrigerator system
The system of refrigerating fluid leakage rate in above-mentioned control refrigerator system, its method comprises the steps：
Step 1, acquisition control unit gather the pressure in refrigerator system normal work for the pressure transducer repeatedly, to institute
The data of collection enters the parameters such as the pressure range that row operation obtains under normal operating conditions, pressure change slope, and combines
Preset limit pressure point data carries out logical operationss, forms control logic；
Step 2, when acquisition control unit receives the warning signal of sensitive gas probe, or receive pressure transducer
Preset limiting pressure data, or the pressure data receiving is carried out find after logical operationss to change model beyond normal pressure
Enclose, acquisition control unit sends a series of control instructions, sends alarm notification to attendant simultaneously；
Step 3, compressor close power supply according to control instruction, staged isolation valve is closed according to control instruction, will freeze
System circulation pipeline be divided into several sections, safety relief valve opened according to control instruction, release refrigeration system circulation pipe to outdoor
Refrigerating fluid in road；Indoor air exhaust system is opened according to control instruction, the indoor refrigerating fluid gas of exclusion；
Step 4, attendant process leakage point, and filling refrigerating fluid is so as to refrigerator system recovers normal work shape again
State, reenters step 1.
Beneficial effects of the present invention：The system controlling refrigerating fluid leakage rate in refrigerator system of the present invention, in refrigeration system
It is provided with several staged isolation valves in system circulating line, be provided with several pressure transducers inside refrigeration system circulating line,
Refrigeration space outside refrigeration system circulating line is provided with several sensitive gas probes, and by acquisition control unit to described pressure
The force transducer data detected with sensitive gas probe is acquired and monitor in real time, when the data being gathered exceeds normal work
When making scope, staged isolation valve can be closed under the control of described acquisition control unit refrigeration system circulating line is separated
For several sections, the amount of the refrigerating fluid that will leak out in time controls in leakage section, and simultaneously closes off compressor power, opens indoor exhaust wind system
System and safety relief valve, the refrigerating fluid that will leak out is expelled to outdoor, thus the leakage rate of effective control refrigerating fluid, has higher
Security performance, and structure is simple, low production cost.The method controlling refrigerating fluid leakage rate in refrigerator system of the present invention, leads to
Cross the acquisition control unit data detected to pressure transducer and sensitive gas probe to be acquired and monitor in real time, when being adopted
When the data of collection exceeds normal range of operation, acquisition control unit controls staged isolation valve closing, by refrigeration system circulation pipe
Road is divided into several sections, and the amount of the refrigerating fluid that will leak out in time controls in leakage section, thus realizing controlling the leakage of refrigerating fluid in time
Concentration, be greatly reduced refrigerating fluid leakage rate, it is to avoid because refrigerating fluid leaks the danger such as the burning that excessive concentration causes or blast
Danger.
Brief description
Below in conjunction with the accompanying drawings, by the specific embodiment detailed description to the present invention, technical scheme will be made
And other beneficial effects are apparent.
In accompanying drawing,
Fig. 1 is a kind of structural representation of existing exemplary refrigerant machine system；
Fig. 2 controls the structural representation of the system first embodiment of refrigerating fluid leakage rate in refrigerator system for the present invention；
Fig. 3 controls the structural representation of the system second embodiment of refrigerating fluid leakage rate in refrigerator system for the present invention；
Fig. 4 controls the structural representation of the system 3rd embodiment of refrigerating fluid leakage rate in refrigerator system for the present invention；
Fig. 5 controls the control principle drawing of the system of refrigerating fluid leakage rate in refrigerator system for the present invention；
The flow chart that Fig. 6 controls the method for refrigerating fluid leakage rate in refrigerator system for the present invention.
Specific embodiment
For further illustrating the technological means and its effect that the present invention taken, being preferable to carry out below in conjunction with the present invention
Example and its accompanying drawing are described in detail.
Please refer to Fig. 2 to Fig. 5, the present invention provides a kind of system controlling refrigerating fluid leakage rate in refrigerator system,
Described refrigerator system can be existing exemplary refrigerant machine system as shown in Figure 1, and it includes compressor 1 and described compression
The fluid reservoir 3 that the condenser 2 that machine 1 is connected is connected with described condenser 2 is connected with described fluid reservoir 3 and compressor 1
Vaporizer 4, the expansion valve 5 between described fluid reservoir 3 and vaporizer 4 and for being connected the refrigeration system of said system
Circulating line.
Specifically, the present invention control refrigerator system in refrigerating fluid leakage rate system loads in above-mentioned refrigerator system
In, and do not affect the refrigeration performance of former refrigerator system.The system controlling refrigerating fluid leakage rate in refrigerator system of the present invention
Including：Staged isolation valve, pressure transducer, sensitive gas probe, compressor operating state sensor 11, safety relief valve
8th, acquisition control unit 7 and indoor air exhaust system 9.
Described staged isolation valve is installed in refrigeration system circulating line, refrigeration system circulating line can be divided into number
Section, is controlled by acquisition control unit 7, and under refrigerating fluid No leakage state, staged isolation valve is open mode, does not affect to freeze
The normal work of machine system, when refrigerating fluid occurs leakage, acquisition control unit 7 controls staged isolation valve closing, will freeze
System circulation pipeline is divided into several sections, thus limiting the leakage rate of refrigerating fluid.
The quantity of described staged isolation valve can be N number of (N=1,2,3,4 ...), and described staged isolation valve will freeze
System circulation pipeline is divided into several sections.Described staged isolation valve can be electromagnetic valve or other Controlled valve it is preferred that described point
Section separation valve door is electromagnetic valve.
The quantity of described pressure transducer can be M (M=1,2,3,4 ...), is arranged on refrigeration system circulating line
Diverse location, the pressure data in refrigeration system circulating line and rate of pressure change are passed to acquisition control unit 7.And
As M=0, sensitive gas probe can be relied on to detect whether to leak.
Described several sensitive gas probe is arranged on outside kind of refrigeration cycle pipeline, is placed near indoor easily leakage point, works as detection
During to refrigerating fluid gas, send refrigerating fluid leakage alarm to acquisition control unit 7.
Described indoor air exhaust system 9 is controlled by acquisition control unit and controls 7, when refrigerating fluid leakage is detected, opens room
Interior exhaust system 9, the refrigerating fluid that will leak out indoors is rejected to outdoor.In addition described indoor air exhaust system 9 can install additional, also may be used
With by means of existed system.
Fig. 2 show the structural representation that the present invention controls the system first embodiment of refrigerating fluid leakage rate in refrigerator system
Figure.In this first embodiment, the quantity of described staged isolation valve is four, including located at described compressor 1 and condenser 2
Between pipeline in the first isolating valve 611, the second isolating valve in the pipeline between described condenser 2 and fluid reservoir 3
612nd, the 3rd isolating valve 613 in the pipeline between described fluid reservoir 3 and expansion valve 5 and located at described compressor 1 with steam
Send out the 4th isolating valve 614 in the pipeline between device 4.
The quantity of described pressure transducer is two, is separately positioned in the high pressure section and low pressure stage of kind of refrigeration cycle pipeline,
Including the first pressure sensor 601 in the pipeline between described compressor 1 and condenser 2, located at described compressor 1 with
Second pressure sensor 602 in pipeline between vaporizer 4.Described first, second pressure transducer 601,602 is used for detecting
Pressure data within refrigeration system circulating line and rate of pressure change, and send data to acquisition control unit 7, described
Acquisition control unit 7 is remembered and logical operationss to described data, forms the pressure range under normal operation.
The quantity of described several sensitive gas probe is two, including outside close located at described air conditioner refrigerating circulation line
First, second sensitive gas probe 621,622 of described vaporizer 4.
Described compressor operating state sensor 11, for the working condition of collect and process machine 1, passes to acquisition controlling list
Unit 7.Described compressor operating state sensor 11 can in addition install additional it is also possible to value is in the output of refrigerator system itself
Mouthful.
Described safety relief valve 8 is connected on refrigeration system circulating line outdoor section, and no refrigerating fluid is in when leaking
Closed mode, is controlled by acquisition control unit 7.
Refer to Fig. 5, described acquisition control unit 7 is by gathered data module 71, logical operation module 72 and output control
Instruction module 73 processed is constituted.Described acquisition control unit 7 be used for gathering the pressure data of pressure transducer, rate of pressure change,
And the warning signal of sensitive gas probe, in conjunction with the working condition of compressor 1, when judging to have, pressure data is exceeded, pressure change
Slope abnormal or receive sensitive gas probe warning signal when, start control signal, close staged isolation valve, will
Air conditioner refrigerating circulating line is divided into several sections, and the amount of the refrigerating fluid that will leak out in time controls in leakage section；And open safety relief
Valve 8, refrigerating fluid is leaked into outdoor, or is retracted to by force in collecting tank；The compression simultaneously closing off refrigerator system is dynamo-electric
Source, open indoor air exhaust system 9, and send warning signal to attendant, thus realize controlling in time refrigerating fluid leakage dense
Degree, is greatly reduced refrigerating fluid leakage rate, it is to avoid because refrigerating fluid leaks the danger such as the burning that excessive concentration causes or blast.
Fig. 3 show the structural representation that the present invention controls the system second embodiment of refrigerating fluid leakage rate in refrigerator system
Figure, it is with the difference of above-mentioned first embodiment, using safety relief valve 8 as apolegamy part, controls system described
Be not provided with safety relief valve 8 in the system of refrigerating fluid leakage rate in cold system, and other structures and operation principle all with
First embodiment is identical, and here is omitted.
Fig. 4 show the structural representation that the present invention controls the system 3rd embodiment of refrigerating fluid leakage rate in refrigerator system
Figure, it is with the difference of above-mentioned first, second embodiment, the refrigerator system in this 3rd embodiment and first, the
Refrigerator system in two embodiments is compared, and is the relatively easy small-sized refrigerator system of structure, its air conditioner refrigerating circulation line
Shorter, the refrigerating fluid total amount of fill is less, and does not have fluid reservoir, from the aspect of economic cause and the convenient degree of construction etc., at this
It is not provided with staged isolation valve and pressure transducer, only setting safety relief valve 8, its refrigerating fluid leaks in 3rd embodiment
Detection relies on first, second sensitive gas probe 621,622 outside refrigerating circulation.The defect of the present embodiment is, when
When one space has multiple chillers work, only outer portion sensitive gas probe cannot be differentiated is the refrigeration of which platform refrigeration machine
Liquid leaks.
Refer to Fig. 5, the acquisition control unit 7 in this 3rd embodiment is used for gathering the alarm letter of sensitive gas probe
Number, when receiving the warning signal of sensitive gas probe, start control signal, close the compressor power of refrigerator system, beat
Open safety relief valve 8 and indoor air exhaust system 9, and send warning signal to attendant, simultaneously using safety relief valve 8
Refrigerating fluid in circulating line is discharged in outdoor or is retracted in collecting tank, reach the concentration controlling indoor refrigerating fluid leakage rate
Purpose.
In this 3rd embodiment, described safety relief valve 8 is as a kind of execution of simplify control refrigerating fluid leakage rate
Part, with the concentration for controlling indoor refrigerating fluid leakage rate.
Please refer to Fig. 5 and Fig. 6, the present invention also provides a kind of side controlling refrigerating fluid leakage rate in refrigerator system
Method, is provided with the as shown in Figure 2 system controlling refrigerating fluid leakage rate in refrigerator system in this refrigerator system, its method includes
Following steps：
Step 1, acquisition control unit 7 gather the pressure in refrigerator system normal work for the pressure transducer repeatedly, right
The data being gathered enters the parameters such as the pressure range that row operation obtains under normal operating conditions, pressure change slope, and ties
Close preset limit pressure point data and carry out logical operationss, form control logic.
Specifically, described acquisition control unit 7 is to instruct mould by gathered data module, logical operation module and output control
Block is constituted.
Step 2, when acquisition control unit 7 receives the warning signal of sensitive gas probe, or receive pressure sensing
The preset limiting pressure data of device, or the pressure data receiving is carried out find after logical operationss beyond normal pressure change
Scope, acquisition control unit 7 sends a series of control instructions, sends alarm notification to attendant simultaneously.
When due to refrigerator system structure more simple, control refrigerator system in refrigerating fluid leakage rate system in do not have
During setting pressure transducer, described acquisition control unit 7 can judge to make by gathering the warning signal of sensitive gas probe
The leakage of cold liquid.
Specifically, described several sensitive gas probe is arranged on outside kind of refrigeration cycle pipeline, is placed near indoor easily leakage point,
When refrigerating fluid gas is detected, send refrigerating fluid leakage alarm to acquisition control unit 7.
Step 3, compressor 1 close power supply according to control instruction, staged isolation valve is closed according to control instruction, will freeze
System circulation pipeline be divided into several sections, safety relief valve 8 opened according to control instruction, release refrigeration system circulation pipe to outdoor
Refrigerating fluid in road；Indoor air exhaust system 9 is opened according to control instruction, the indoor refrigerating fluid gas of exclusion.
Specifically, after safety relief valve 8 is opened, refrigerating fluid can be leaked into outdoor, or be retracted to collection by force
In tank.In addition described indoor air exhaust system 9 can install additional, it is also possible by means existed system.
Step 4, attendant process leakage point, and filling refrigerating fluid is so as to refrigerator system recovers normal work shape again
State, reenters step 1.
In sum, the system controlling refrigerating fluid leakage rate in refrigerator system of the present invention, in refrigeration system circulation pipe
It is provided with several staged isolation valves in road, be provided with several pressure transducers inside refrigeration system circulating line, in refrigeration system
Refrigeration space outside circulating line is provided with several sensitive gas probes, and by acquisition control unit to described pressure transducer
The data detected with sensitive gas probe is acquired and monitor in real time, when the data being gathered exceeds normal range of operation
When, staged isolation valve can be closed under the control of described acquisition control unit and refrigeration system circulating line is divided into number
Section, the amount of the refrigerating fluid that will leak out in time controls in leakage section, and simultaneously closes off compressor power, open indoor air exhaust system with
Safety relief valve, the refrigerating fluid that will leak out is expelled to outdoor, thus the leakage rate of effective control refrigerating fluid, has higher safety
Performance, and structure is simple, low production cost.The method controlling refrigerating fluid leakage rate in refrigerator system of the present invention, by adopting
The collection control unit data detected with sensitive gas probe to pressure transducer is acquired and monitor in real time, when gathered
When data exceeds normal range of operation, acquisition control unit controls staged isolation valve closing, and refrigeration system circulation line is divided
It is divided into several sections, the amount of the refrigerating fluid that will leak out in time controls in leakage section, thus realizing controlling the leakage concentration of refrigerating fluid in time,
Refrigerating fluid leakage rate be greatly reduced, it is to avoid because refrigerating fluid leaks the danger such as the burning that excessive concentration causes or blast.
The above, for the person of ordinary skill of the art, can be with technology according to the present invention scheme and technology
Design is made other various corresponding changes and is deformed, and all these change and deformation all should belong to the claims in the present invention
Protection domain.
Claims (10)
1. a kind of system controlling refrigerating fluid leakage rate in refrigerator system, described refrigerator system critical piece includes compressing
Machine, condenser, vaporizer, expansion valve and the refrigeration system circulating line connecting said apparatus,
It is characterized in that, including：
Staged isolation valve, is installed in refrigeration system circulating line, refrigeration system circulating line can be divided into several sections, and controlled
In acquisition control unit, under refrigerating fluid No leakage state, staged isolation valve is opening, does not affect refrigerator system
Normal work, when refrigerating fluid occurs leakage, acquisition control unit controls staged isolation valve closing, by refrigeration system circulation pipe
Road is divided into several sections, thus limiting the leakage rate of refrigerating fluid；
Pressure transducer, is installed in refrigeration system circulating line at different paragraphs, by the pressure in refrigeration system circulating line
Data and rate of pressure change pass to acquisition control unit；
Several sensitive gas probe, is arranged on outside refrigeration system circulating line, is placed near indoor easily leakage point, when system is detected
During cold liquid gas, send refrigerating fluid leakage alarm to acquisition control unit；
Compressor operating state sensor, collect and process machine working condition, pass to acquisition control unit；
Safety relief valve, is connected on refrigeration system circulating line outdoor section, and no refrigerating fluid is closed when leaking,
It is controlled by acquisition control unit, when refrigerating fluid leakage is detected, safety relief valve is opened, and refrigerating fluid is leaked into outdoor,
Or it is retracted to by force in collecting tank, when refrigeration system is less, staged isolation valve can not be installed, only using safety relief
Valve is discharged the refrigerating fluid in circulating line in outdoor or is retracted in collecting tank, controls the dense of indoor refrigerating fluid leakage rate
Degree, after being mounted with staged isolation valve, safety relief valve chooses to install as the case may be；
Acquisition control unit, the alarm letter of the pressure data of collection pressure transducer, rate of pressure change and sensitive gas probe
Number, in conjunction with the working condition of compressor, acquisition control unit gathers pressure transducer repeatedly in refrigerator system normal work
Pressure, the data being gathered is entered with pressure range and the pressure change slope that row operation obtains under normal operating conditions,
And carry out logical operationss with reference to preset limit pressure point data, form control logic, pressure data is exceeded, pressure becomes when judging to have
Change slope abnormal or receive sensitive gas probe warning signal when, start control signal, close staged isolation valve,
Close the compressor power of refrigerator system, open safety relief valve and indoor air exhaust system, and send announcement to attendant
Alert signal；
Indoor air exhaust system, is controlled by acquisition control unit, when refrigerating fluid leakage is detected, opens indoor air exhaust system, will
Leakage refrigerating fluid indoors is rejected to outdoor.
2. the system controlling refrigerating fluid leakage rate in refrigerator system as claimed in claim 1 is it is characterised in that described segmentation
The quantity of separation valve door is N number of, N=0,2,3,4 ..., refrigeration system circulating line is divided into number by described staged isolation valve
Section, and as N=0, need safety relief valve is installed.
3. the system controlling refrigerating fluid leakage rate in refrigerator system as claimed in claim 2 is it is characterised in that described segmentation
Separation valve door is electromagnetic valve or other Controlled valve.
4. the system controlling refrigerating fluid leakage rate in refrigerator system as claimed in claim 1 is it is characterised in that described pressure
The quantity of sensor is M, M=0,1,2,3,4 ..., it is arranged on the diverse location of refrigeration system circulating line, and as M=0, according to
Detect whether to leak by sensitive gas probe.
5. the system controlling refrigerating fluid leakage rate in refrigerator system as claimed in claim 1 is it is characterised in that described compression
Machine working condition sensor is the delivery outlet of the refrigerator system in addition installing additional or taking itself.
6. the system controlling refrigerating fluid leakage rate in refrigerator system as claimed in claim 1 is it is characterised in that described safety
Pressure relief valve is a kind of execution unit of simplify control refrigerating fluid leakage rate, according to circumstances matches.
7. the system controlling refrigerating fluid leakage rate in refrigerator system as claimed in claim 1 is it is characterised in that described collection
Control unit, is to be made up of gathered data module, logical operation module and output control instruction module.
8. the system controlling refrigerating fluid leakage rate in refrigerator system as claimed in claim 1 is it is characterised in that described interior
Exhaust system is in addition to install additional or by means of existed system.
9. the system controlling refrigerating fluid leakage rate in refrigerator system as claimed in claim 1 is it is characterised in that described refrigeration
Machine system is general refrigerator system, controls the system loads of refrigerating fluid leakage rate in refrigerator system wherein, and not shadow
Ring the refrigeration performance of former refrigerator system.
10. a kind of method controlling refrigerating fluid leakage rate in refrigerator system, is provided with this refrigerator system as claim 1 institute
That states controls the system of refrigerating fluid leakage rate in refrigerator system it is characterised in that comprising the steps：
Step 1, acquisition control unit gather the pressure in refrigerator system normal work for the pressure transducer repeatedly, to being gathered
Data enter pressure range and the pressure change slope that row operation obtains under normal operating conditions, and combine preset limit
Pressure point data carries out logical operationss, forms control logic；
Step 2, when acquisition control unit receives the warning signal of sensitive gas probe, or it is preset to receive pressure transducer
Limiting pressure data, or the pressure data receiving is carried out after logical operationss find exceed normal pressure excursion,
Acquisition control unit sends a series of control instructions, sends alarm notification to attendant simultaneously；
Step 3, compressor close power supply according to control instruction, staged isolation valve is closed according to control instruction, by refrigeration system
Circulating line be divided into several sections, safety relief valve opened according to control instruction, release in refrigeration system circulating line to outdoor
Refrigerating fluid；Indoor air exhaust system is opened according to control instruction, the indoor refrigerating fluid gas of exclusion；
Step 4, attendant process leakage point, again fill refrigerating fluid, make refrigerator system recover normal operating conditions, again
Enter step 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410802925.8A CN104567158B (en) | 2014-12-19 | 2014-12-19 | System and method for controlling leakage amount of refrigerant of refrigerator system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410802925.8A CN104567158B (en) | 2014-12-19 | 2014-12-19 | System and method for controlling leakage amount of refrigerant of refrigerator system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104567158A CN104567158A (en) | 2015-04-29 |
| CN104567158B true CN104567158B (en) | 2017-02-22 |
Family
ID=53083802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410802925.8A Expired - Fee Related CN104567158B (en) | 2014-12-19 | 2014-12-19 | System and method for controlling leakage amount of refrigerant of refrigerator system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104567158B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4111111A4 (en) * | 2020-02-25 | 2024-04-03 | LG Electronics, Inc. | HEAT PUMP AND OPERATING METHODS |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6269756B1 (en) * | 2016-09-02 | 2018-01-31 | ダイキン工業株式会社 | Refrigeration equipment |
| JP6767841B2 (en) | 2016-10-14 | 2020-10-14 | サンデン・オートモーティブクライメイトシステム株式会社 | Vehicle air conditioner |
| JP6798322B2 (en) * | 2017-01-16 | 2020-12-09 | ダイキン工業株式会社 | Refrigeration equipment with shutoff valve |
| US11441820B2 (en) * | 2018-09-06 | 2022-09-13 | Carrier Corporation | Refrigerant leak detection system |
| WO2020231933A1 (en) | 2019-05-14 | 2020-11-19 | Carrier Corporation | Method and system for compressor operating range extension via active valve control |
| WO2019166881A2 (en) * | 2019-06-07 | 2019-09-06 | الزيتوني خيري، | Protecting the environment from pollution caused by cooling gas leaks and cooling cycle management systems, furthermore protecting liquid gas-fed compressors, remedying the negative aspects of the cooling and air-conditioning systems used at present and improving the regulation of refrigeration equipment |
| CN110848125B (en) * | 2019-12-02 | 2021-04-27 | 广东美的暖通设备有限公司 | Control circuit, air conditioner and control method |
| MA49801B1 (en) | 2020-05-14 | 2022-01-31 | Ezzitouni Khiyari | A technical method to improve the operation of refrigeration units with an integrated unit according to the standards of its factory in a protected manner |
| CN114234493A (en) * | 2021-12-15 | 2022-03-25 | 珠海格力电器股份有限公司 | Refrigerant leakage prevention device of air conditioner, control method of refrigerant leakage prevention device and air conditioner |
| CN118224795B (en) * | 2024-05-21 | 2024-07-30 | 徐州达希能源技术有限公司 | Refrigerating system based on multisource data analysis control |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100432224B1 (en) * | 2002-05-01 | 2004-05-20 | 삼성전자주식회사 | Refrigerant leakage detecting method for air conditioner |
| JP2008162438A (en) * | 2006-12-28 | 2008-07-17 | Calsonic Kansei Corp | Vehicular air-conditioner |
| JP2009250554A (en) * | 2008-04-09 | 2009-10-29 | Daikin Ind Ltd | Refrigerating device |
| CN101737878B (en) * | 2009-12-12 | 2013-05-08 | 广东美的电器股份有限公司 | Air conditioner using combustible refrigerant and control method thereof |
| KR101155345B1 (en) * | 2010-02-08 | 2012-06-11 | 엘지전자 주식회사 | Air conditioner and method for controlling of air conditioner |
| CN203869825U (en) * | 2014-06-05 | 2014-10-08 | 珠海格力电器股份有限公司 | Detection system and air conditioner |
| CN104006934B (en) * | 2014-06-05 | 2017-02-15 | 珠海格力电器股份有限公司 | Detection system, method and device and air conditioner |
-
2014
- 2014-12-19 CN CN201410802925.8A patent/CN104567158B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4111111A4 (en) * | 2020-02-25 | 2024-04-03 | LG Electronics, Inc. | HEAT PUMP AND OPERATING METHODS |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104567158A (en) | 2015-04-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104567158B (en) | System and method for controlling leakage amount of refrigerant of refrigerator system | |
| CN105698284B (en) | Air-conditioning system and its refrigeration control method and device | |
| CN105065249B (en) | Compressor performance detection device, air conditioning system with same and control method | |
| CN104344622B (en) | Air-cooled heat pump cold-hot water machine and the antifreeze method of heat exchanger, system | |
| CN101566517A (en) | Method for judging refrigerant leakage of air-conditioner | |
| CN101813396B (en) | Air conditioner and method for detecting oil level of compressor thereof | |
| CN110375466B (en) | Device and method for detecting refrigerant leakage of air source heat pump system | |
| CN104819547A (en) | Fluorine-lacking detection and protection method and system during startup of variable frequency air conditioning system | |
| CN107062538B (en) | A kind of air conditioner intelligent detecting method | |
| CN105954052A (en) | Capillary tube blockage detection system and method | |
| CN203893510U (en) | Leakage monitoring and emergency system of ammonia refrigeration system | |
| CN106440583A (en) | Hot water heater of air conditioning heat pump and antifreezing control method therefor | |
| CN106765903B (en) | A kind of control method of the outer blower for air-conditioning system | |
| CN107062560A (en) | The coolant leakage protection device and method of air conditioner and air conditioner | |
| CN107328022A (en) | The control method and mobile air-conditioner of mobile air-conditioner | |
| CN110375467A (en) | The detection device and method of leakage of refrigerant for air-source list refrigeration system | |
| CN103940158A (en) | Air conditioner outdoor unit, air conditioner system and operation method of air conditioner system | |
| CN107477795A (en) | Combustible refrigerant air-conditioning and its control method | |
| CN105890112A (en) | Drifting detection method for temperature sensor in outdoor unit heat exchanger, processor and air conditioner | |
| CN106091500B (en) | Safe liquid storage tank device and air conditioner adopting same | |
| CN106247662B (en) | A kind of water source heat pump air-conditioner operating system | |
| CN206361887U (en) | Air conditioner heat pump hot water | |
| CN105180511A (en) | Split floor type air conditioner, refrigerant recycling method and refrigerant recycling device | |
| CN103759337B (en) | A kind of air-conditioning and control method thereof | |
| CN206073526U (en) | Safe liquid storage tank device and air conditioner adopting same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170222 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |