CN104567158A - 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
- CN104567158A CN104567158A CN201410802925.8A CN201410802925A CN104567158A CN 104567158 A CN104567158 A CN 104567158A CN 201410802925 A CN201410802925 A CN 201410802925A CN 104567158 A CN104567158 A CN 104567158A
- Authority
- CN
- China
- Prior art keywords
- refrigerating fluid
- refrigerator
- control unit
- leakage rate
- circulating line
- 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.)
- Granted
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
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, particularly relate to a kind of system and method controlling refrigerating fluid leakage rate in refrigerator system.
Background technology
Refrigerating fluid refers to continuous circulation in the circulation line of refrigeration system and changes to realize the operation material freezed by the state of itself, its operation principle may be summarized to be: refrigerating fluid absorbs the heat of cooled medium (water or air etc.) and vaporizes in evaporimeter, transfers heat to surrounding air or water and condensation within the condenser.
Figure 1 shows that a kind of structural representation of existing typical refrigerator system, comprise the refrigeration system circulating line of compressor 1, condenser 2, evaporimeter 3, expansion valve 4, fluid reservoir 5 and connection said system.The widely used refrigerating fluid major part of existing refrigeration system is freon.Freon can damage atmospheric ozone layer, and accelerates the generation of greenhouse effects.Based on these factors, some novel refrigerating fluids are applied in refrigeration system gradually.Although some New Refrigerating liquid is nontoxic at present, on environmental protection and energy saving, also have good performance, can not damage atmospheric ozone layer, it has flammable at certain temperature and concentration, can be quick-fried characteristic.When this New Refrigerating liquid occurs to leak, if reach certain concentration, very likely there is burning when running into the situation such as spark, high temperature and even explode, there is very large potential safety hazard, therefore, this characteristic limits the use occasion of New Refrigerating liquid to a certain extent.
Therefore, be necessary to propose a kind of system and method that effectively can control refrigerating fluid leakage rate, make refrigeration system after detecting that refrigerating fluid leaks, the leakage rate of refrigerating fluid can be controlled timely and effectively, make the refrigerating fluid leaked be unlikely to reach combustible concentration, improve the security performance of refrigeration system.
Summary of the invention
The object of the present invention is to provide a kind of system controlling refrigerating fluid leakage rate in refrigerator system, can monitor in real time the duty of refrigerator system, and there is the leakage rate that effectively can control refrigerating fluid when leaking in refrigerating fluid.
Another object of the present invention is to provide a kind of method controlling refrigerating fluid leakage rate in refrigerator system, can within the very first time, detect the leakage of refrigerating fluid and send alarm, the amount of the refrigerating fluid of leakage can be controlled in time in leakage section simultaneously, avoid leaking the danger such as burning that excessive concentration causes or blast due to refrigerating fluid.
For achieving the above object, the invention provides a kind of system controlling refrigerating fluid leakage rate in refrigerator system, described refrigerator system comprises compressor, condenser, evaporimeter, expansion valve and connects the refrigeration system circulating line of said apparatus,
In described control refrigerator system, the system of refrigerating fluid leakage rate comprises:
Staged isolation valve, be installed in refrigeration system circulating line, refrigeration system circulating line can be divided into several sections, and be controlled by collection control unit, under refrigerating fluid No leakage state, staged isolation valve is opening, do not affect the normal work of refrigerator system, when refrigerating fluid occurs to leak, gather control unit and control staged isolation valve closing, refrigeration system circulating line is divided into several sections, thus the leakage rate of restriction refrigerating fluid;
Pressure sensor, is installed at different paragraph place in refrigeration system circulating line, the pressure data in refrigeration system circulating line and rate of pressure change is passed to collection control unit;
Several sensitive gas probe, is arranged on outside refrigeration system circulating line, being placed near indoor easily leakage point, when refrigerating fluid gas being detected, sending refrigerating fluid leakage alarm to collection control unit;
Compressor operating state sensor, collect and process machine duty, passes to collection control unit;
Safety relief valve, be connected on refrigeration system circulating line outdoor section, closed condition is in when leaking without refrigerating fluid, be controlled by collection control unit, when detecting that refrigerating fluid leaks, safety relief valve is opened, 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 the refrigerating fluid in circulating line is discharged in outdoor or is retracted in collecting tank by use safety pressure relief valve, the concentration of refrigerating fluid leakage rate in control room, after staged isolation valve has been installed, safety relief valve can select dress as the case may be,
Gather control unit, gather the alarm signal of the pressure data of pressure sensor, rate of pressure change and sensitive gas probe, in conjunction with the duty of compressor, when judge have pressure data to exceed standard, pressure change slope abnormal or receive sensitive gas probe alarm signal time, 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 alarm signal to attendant;
Indoor air exhaust system, is controlled by collection control unit, when detecting that refrigerating fluid leaks, opens indoor air exhaust system, and leakage is rejected to outdoor at the refrigerating fluid of indoor.
The quantity of described staged isolation valve is N number of (N=0,2,3,4 ...), refrigeration system circulating line is divided into several sections, and as N=0, needs safety relief valve is installed.
Described staged isolation valve is magnetic valve or other Controlled valve.
The quantity of described pressure sensor is M (M=0,1,2,3,4 ...), be arranged on the diverse location of refrigeration system circulating line, as M=0, rely on sensitive gas probe to detect and whether leak.
Described compressor operating state sensor is install additional in addition or the delivery outlet of value refrigerator system itself.
Described safety relief valve is a kind of execution unit simplifying control refrigerating fluid leakage rate, can according to circumstances match.
Described collection control unit is by image data module, logical operation module and output control instruction module composition.
Described indoor air exhaust system is for install additional in addition or by means of existed system.
Described refrigerator system is general refrigerator system, controls the system loads of refrigerating fluid leakage rate in refrigerator system wherein, and does 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, and be provided with the system of refrigerating fluid leakage rate in above-mentioned control refrigerator system in this refrigerator system, its method comprises the steps:
Step 1, collection control unit gather the pressure of pressure sensor when refrigerator system normally works repeatedly, computing is carried out to gathered data and obtains the parameter such as pressure range under normal operating conditions, pressure change slope, and carry out logical operation in conjunction with preset limit pressure spot data, formation control logic;
Step 2, when gather control unit receive sensitive gas probe alarm signal, or receive the limiting pressure data that pressure sensor is preset, or find after carrying out logical operation to the pressure data received to exceed normal pressure excursion, gather control unit and send a series of control instruction, send alarm notification to attendant simultaneously;
Step 3, compressor are closed according to control instruction according to control instruction powered-down, staged isolation valve, refrigeration system circulating line is divided into several sections, safety relief valve opens according to control instruction, release the refrigerating fluid in refrigeration system circulating line to outdoor; Indoor air exhaust system is opened according to control instruction, gets rid of indoor refrigerating fluid gas;
Step 4, attendant process leakage point, again filling refrigerating fluid, make its refrigerator system recover normal operating conditions, reenter step 1.
Beneficial effect of the present invention: the system of refrigerating fluid leakage rate in control refrigerator system of the present invention, several staged isolation valve is provided with in refrigeration system circulating line, several pressure sensor is provided with in refrigeration system circulating line inside, several sensitive gas probe is provided with at the refrigeration space of refrigeration system circulating line outside, and by gathering control unit, the pop one's head in data that detect of described pressure sensor and sensitive gas are carried out collection and also monitored in real time, when gathered data exceed normal range of operation, staged isolation valve can be closed under the control of described collection control unit and refrigeration system circulating line is divided into several sections, in time the amount of the refrigerating fluid of leakage is controlled in leakage section, and simultaneously closes compression electromechanical source, open indoor air exhaust system and safety relief valve, the refrigerating fluid of leakage is expelled to outdoor, thus effectively control the leakage rate of refrigerating fluid, there is higher security performance, and structure is simple, production cost is low.The method of refrigerating fluid leakage rate in control refrigerator system of the present invention, by gathering control unit, the pop one's head in data that detect of pressure sensor and sensitive gas are carried out collection and also monitored in real time, when gathered data exceed normal range of operation, gather control unit and control staged isolation valve closing, refrigeration system circulation line is divided into several sections, in time the amount of the refrigerating fluid of leakage is controlled in leakage section, thus realize the leakage concentration controlling refrigerating fluid in time, significantly reduce refrigerating fluid leakage rate, avoid because refrigerating fluid leaks the burning or the danger such as blast that excessive concentration causes.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, by the specific embodiment of the present invention describe in detail, will make technical scheme of the present invention and other beneficial effect apparent.
In accompanying drawing,
Fig. 1 is a kind of structural representation of existing exemplary refrigerant machine system;
Fig. 2 is the structural representation that the present invention controls system first embodiment of refrigerating fluid leakage rate in refrigerator system;
Fig. 3 is the structural representation that the present invention controls system second embodiment of refrigerating fluid leakage rate in refrigerator system;
Fig. 4 is the structural representation that the present invention controls system the 3rd embodiment of refrigerating fluid leakage rate in refrigerator system;
Fig. 5 is the control principle drawing that the present invention controls the system of refrigerating fluid leakage rate in refrigerator system;
Fig. 6 is the flow chart that the present invention controls the method for refrigerating fluid leakage rate in refrigerator system.
Detailed description of the invention
For further setting forth the technological means and effect thereof that the present invention takes, be described in detail below in conjunction with the preferred embodiments of the present invention and accompanying drawing thereof.
Please refer to Fig. 2 to Fig. 5, the 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 comprising evaporimeter 4 that fluid reservoir 3 that condenser 2 that compressor 1 is connected with described compressor 1 is connected with described condenser 2 is connected with described fluid reservoir 3 and compressor 1, being located at described fluid reservoir 3 and the expansion valve 5 between evaporimeter 4 and the refrigeration system circulating line for being connected said system.
Particularly, in control refrigerator system of the present invention, the system loads of refrigerating fluid leakage rate is in above-mentioned refrigerator system, and does not affect the refrigeration performance of former refrigerator system.In control refrigerator system of the present invention, the system of refrigerating fluid leakage rate comprises: staged isolation valve, pressure sensor, sensitive gas probe, compressor operating state sensor 11, safety relief valve 8, collection 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 several sections, be controlled by and gather control unit 7, under refrigerating fluid No leakage state, staged isolation valve is open mode, does not affect the normal work of refrigerator system, when refrigerating fluid occurs to leak, gather control unit 7 and control staged isolation valve closing, refrigeration system circulating line is divided into several sections, thus the leakage rate of restriction refrigerating fluid.
The quantity of described staged isolation valve can be N number of (N=1,2,3,4 ...), refrigeration system circulating line is divided into several sections by described staged isolation valve.Described staged isolation valve can be magnetic valve or other Controlled valve, and preferably, described staged isolation valve is magnetic valve.
The quantity of described pressure sensor can be M (M=1,2,3,4 ...), be arranged on the diverse location of refrigeration system circulating line, the pressure data in refrigeration system circulating line and rate of pressure change passed to and gathers control unit 7.And as M=0, sensitive gas probe can be relied on to detect and whether to leak.
Described several sensitive gas probe is arranged on outside kind of refrigeration cycle pipeline, being placed near indoor easily leakage point, when refrigerating fluid gas being detected, sending refrigerating fluid leakage alarm to collection control unit 7.
Described indoor air exhaust system 9 is controlled by collection control unit and controls 7, when detecting that refrigerating fluid leaks, opens indoor air exhaust system 9, leakage is rejected to outdoor at the refrigerating fluid of indoor.Described indoor air exhaust system 9 can install additional in addition, also can by means of existed system.
Figure 2 shows that the present invention controls the structural representation of system first embodiment of refrigerating fluid leakage rate in refrigerator system.In this first embodiment, the quantity of described staged isolation valve is four, the second isolating valve 612 in the pipeline comprise the first isolating valve 611 in the pipeline be located between described compressor 1 and condenser 2, being located between described condenser 2 and fluid reservoir 3, be located between described fluid reservoir 3 and expansion valve 5 pipeline in the 3rd isolating valve 613 and the 4th isolating valve 614 in being located between described compressor 1 and evaporimeter 4 pipeline.
The quantity of described pressure sensor is two, in the high pressure section being separately positioned on kind of refrigeration cycle pipeline and low pressure stage, comprise the first pressure sensor 601 in the pipeline be located between described compressor 1 and condenser 2, be located at the second pressure sensor 602 in the pipeline between described compressor 1 and evaporimeter 4.First, second pressure sensor 601,602 described is for detecting pressure data and the rate of pressure change of refrigeration system circulating line inside, and send data to collection control unit 7, described collection control unit 7 is remembered and logical operation described data, forms the pressure range under normal operation.
The quantity of described several sensitive gas probe is two, comprises and is located at the outside probe of first, second sensitive gas near described evaporimeter 4 621,622 of described air conditioner refrigerating circulation line.
Described compressor operating state sensor 11, for the duty of collect and process machine 1, passes to and gathers control unit 7.Described compressor operating state sensor 11 can install additional in addition, also can value in the delivery outlet of refrigerator system itself.
Described safety relief valve 8 is connected on refrigeration system circulating line outdoor section, is in closed condition when leaking without refrigerating fluid, is controlled by and gathers control unit 7.
Refer to Fig. 5, described collection control unit 7 is made up of image data module 71, logical operation module 72 and output control instruction module 73.Described collection control unit 7 is for gathering the alarm signal of the pressure data of pressure sensor, rate of pressure change and sensitive gas probe, in conjunction with the duty of compressor 1, when judge have pressure data to exceed standard, pressure change slope abnormal or receive sensitive gas probe alarm signal time, start control signal, close staged isolation valve, air conditioner refrigerating circulating line is divided into several sections, in time the amount of the refrigerating fluid of leakage is controlled in leakage section; And open safety relief valve 8, refrigerating fluid is leaked into outdoor, or is retracted to by force in collecting tank; Close the compressor power of refrigerator system simultaneously, open indoor air exhaust system 9, and send alarm signal to attendant, thus realize the leakage concentration controlling refrigerating fluid in time, significantly reduce refrigerating fluid leakage rate, avoid and leak the danger such as burning that excessive concentration causes or blast due to refrigerating fluid.
Figure 3 shows that the present invention controls the structural representation of system second embodiment of refrigerating fluid leakage rate in refrigerator system, the difference of itself and above-mentioned first embodiment is, using safety relief valve 8 as apolegamy parts, in described control refrigerator system refrigerating fluid leakage rate system in safety relief valve 8 is not set, and other structure and working principle are all identical with the first embodiment, repeat no more herein.
Figure 4 shows that the present invention controls the structural representation of system the 3rd embodiment of refrigerating fluid leakage rate in refrigerator system, itself and above-mentioned first, the difference of the second embodiment is, refrigerator system and first in 3rd embodiment, refrigerator system in second embodiment is compared, for the relatively easy small-sized refrigerator system of structure, its air conditioner refrigerating circulation line is shorter, filling refrigerating fluid total amount is less, and there is no fluid reservoir, from the viewpoint of economic cause and the convenient degree of construction etc., in the 3rd embodiment, staged isolation valve and pressure sensor are not set, safety relief valve 8 is only set, its refrigerating fluid leak detection relies on first of refrigerating circulation outside, second sensitive gas probe 621, 622.The defect of the present embodiment is, when a space have multiple stage refrigeration machine work time, only outer portion sensitive gas probe cannot differentiate be which platform refrigeration machine refrigerating fluid leak.
Refer to Fig. 5, collection control unit 7 in 3rd embodiment is for gathering the alarm signal of sensitive gas probe, when receiving the alarm signal of sensitive gas probe, start control signal, close the compressor power of refrigerator system, open safety relief valve 8 and indoor air exhaust system 9, and send alarm signal to attendant, refrigerating fluid in circulating line is discharged in outdoor or is retracted in collecting tank by use safety pressure relief valve 8 simultaneously, reaches the object of the concentration of refrigerating fluid leakage rate in control room.
In the 3rd embodiment, described safety relief valve 8 simplifies as a kind of the execution unit controlling refrigerating fluid leakage rate, to be used for the concentration of refrigerating fluid leakage rate in control room.
Please refer to Fig. 5 and Fig. 6, the present invention also provides a kind of method controlling refrigerating fluid leakage rate in refrigerator system, and be provided with the system of refrigerating fluid leakage rate in control refrigerator system as shown in Figure 2 in this refrigerator system, its method comprises the steps:
Step 1, collection control unit 7 gather the pressure of pressure sensor when refrigerator system normally works repeatedly, computing is carried out to gathered data and obtains the parameter such as pressure range under normal operating conditions, pressure change slope, and carry out logical operation in conjunction with preset limit pressure spot data, formation control logic.
Particularly, described collection control unit 7 is by image data module, logical operation module and output control instruction module composition.
Step 2, when gather control unit 7 receive sensitive gas probe alarm signal, or receive the limiting pressure data that pressure sensor is preset, or find after carrying out logical operation to the pressure data received to exceed normal pressure excursion, gather control unit 7 and send a series of control instruction, send alarm notification to attendant simultaneously.
When due to refrigerator system structure comparatively simple and easy, when controlling not arrange pressure sensor in the system of refrigerating fluid leakage rate in refrigerator system, described collection control unit 7 can judge the leakage of refrigerating fluid by the alarm signal gathering sensitive gas probe.
Particularly, described several sensitive gas probe is arranged on outside kind of refrigeration cycle pipeline, being placed near indoor easily leakage point, when refrigerating fluid gas being detected, sending refrigerating fluid leakage alarm to collection control unit 7.
Step 3, compressor 1 are closed according to control instruction according to control instruction powered-down, staged isolation valve, refrigeration system circulating line is divided into several sections, safety relief valve 8 opens according to control instruction, release the refrigerating fluid in refrigeration system circulating line to outdoor; Indoor air exhaust system 9 is opened according to control instruction, gets rid of indoor refrigerating fluid gas.
Particularly, refrigerating fluid can be leaked into outdoor, or be retracted to by force in collecting tank after opening by safety relief valve 8.Described indoor air exhaust system 9 can install additional in addition, also can by means of existed system.
Step 4, attendant process leakage point, again filling refrigerating fluid, make its refrigerator system recover normal operating conditions, reenter step 1.
In sum, the system of refrigerating fluid leakage rate in control refrigerator system of the present invention, several staged isolation valve is provided with in refrigeration system circulating line, several pressure sensor is provided with in refrigeration system circulating line inside, several sensitive gas probe is provided with at the refrigeration space of refrigeration system circulating line outside, and by gathering control unit, the pop one's head in data that detect of described pressure sensor and sensitive gas are carried out collection and also monitored in real time, when gathered data exceed normal range of operation, staged isolation valve can be closed under the control of described collection control unit and refrigeration system circulating line is divided into several sections, in time the amount of the refrigerating fluid of leakage is controlled in leakage section, and simultaneously closes compression electromechanical source, open indoor air exhaust system and safety relief valve, the refrigerating fluid of leakage is expelled to outdoor, thus effectively control the leakage rate of refrigerating fluid, there is higher security performance, and structure is simple, production cost is low.The method of refrigerating fluid leakage rate in control refrigerator system of the present invention, by gathering control unit, the pop one's head in data that detect of pressure sensor and sensitive gas are carried out collection and also monitored in real time, when gathered data exceed normal range of operation, gather control unit and control staged isolation valve closing, refrigeration system circulation line is divided into several sections, in time the amount of the refrigerating fluid of leakage is controlled in leakage section, thus realize the leakage concentration controlling refrigerating fluid in time, significantly reduce refrigerating fluid leakage rate, avoid because refrigerating fluid leaks the burning or the danger such as blast that excessive concentration causes.
The above, for the person of ordinary skill of the art, can make other various corresponding change and distortion according to technical scheme of the present invention and technical conceive, and all these change and be out of shape the protection domain that all should belong to the claims in the present invention.
Claims (10)
1. control a system for refrigerating fluid leakage rate in refrigerator system, described refrigerator system critical piece comprises compressor, condenser, evaporimeter, expansion valve and connects the refrigeration system circulating line of said apparatus,
It is characterized in that, comprising:
Staged isolation valve, be installed in refrigeration system circulating line, refrigeration system circulating line can be divided into several sections, and be controlled by collection control unit, under refrigerating fluid No leakage state, staged isolation valve is opening, do not affect the normal work of refrigerator system, when refrigerating fluid occurs to leak, gather control unit and control staged isolation valve closing, refrigeration system circulating line is divided into several sections, thus the leakage rate of restriction refrigerating fluid;
Pressure sensor, is installed at different paragraph place in refrigeration system circulating line, the pressure data in refrigeration system circulating line and rate of pressure change is passed to collection control unit;
Several sensitive gas probe, is arranged on outside refrigeration system circulating line, being placed near indoor easily leakage point, when refrigerating fluid gas being detected, sending refrigerating fluid leakage alarm to collection control unit;
Compressor operating state sensor, collect and process machine duty, passes to collection control unit;
Safety relief valve, be connected on refrigeration system circulating line outdoor section, closed condition is in when leaking without refrigerating fluid, be controlled by collection control unit, when detecting that refrigerating fluid leaks, safety relief valve is opened, 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 the refrigerating fluid in circulating line is discharged in outdoor or is retracted in collecting tank by use safety pressure relief valve, the concentration of refrigerating fluid leakage rate in control room, after staged isolation valve has been installed, safety relief valve can select dress as the case may be,
Gather control unit, gather the alarm signal of the pressure data of pressure sensor, rate of pressure change and sensitive gas probe, in conjunction with the duty of compressor, when judge have pressure data to exceed standard, pressure change slope abnormal or receive sensitive gas probe alarm signal time, 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 alarm signal to attendant;
Indoor air exhaust system, is controlled by collection control unit, when detecting that refrigerating fluid leaks, opens indoor air exhaust system, and leakage is rejected to outdoor at the refrigerating fluid of indoor.
2. the system controlling refrigerating fluid leakage rate in refrigerator system as claimed in claim 1, it is characterized in that, the quantity of described staged isolation valve is N number of (N=0,2,3,4 ...), refrigeration system circulating line is divided into several sections by described staged isolation valve, 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, it is characterized in that, described staged isolation valve is magnetic valve or other Controlled valve.
4. the system controlling refrigerating fluid leakage rate in refrigerator system as claimed in claim 1, it is characterized in that, the quantity of described pressure sensor is M (M=0,1,2,3,4 ...), be arranged on the diverse location of refrigeration system circulating line, as M=0, rely on sensitive gas probe to detect and whether leak.
5. the system controlling refrigerating fluid leakage rate in refrigerator system as claimed in claim 1, it is characterized in that, described compressor operating state sensor is the delivery outlet of the refrigerator system installing additional in addition or get itself.
6. the system controlling refrigerating fluid leakage rate in refrigerator system as claimed in claim 1, is characterized in that, described safety relief valve is a kind of execution unit simplifying control refrigerating fluid leakage rate, can according to circumstances match.
7. the system controlling refrigerating fluid leakage rate in refrigerator system as claimed in claim 1, it is characterized in that, described collection control unit, is by image data module, logical operation module and output control instruction module composition.
8. the as claimed in claim 1 system controlling refrigerating fluid leakage rate in refrigerator system, is characterized in that, described indoor air exhaust system is for install additional in addition or by means of existed system.
9. the system controlling refrigerating fluid leakage rate in refrigerator system as claimed in claim 1, it is characterized in that, described refrigerator system is general refrigerator system, controls the system loads of refrigerating fluid leakage rate in refrigerator system wherein, and does not affect the refrigeration performance of former refrigerator system.
10. control a method for refrigerating fluid leakage rate in refrigerator system, be provided with the system controlling refrigerating fluid leakage rate in refrigerator system as claimed in claim 1 in this refrigerator system, it is characterized in that, comprise the steps:
Step 1, collection control unit gather the pressure of pressure sensor when refrigerator system normally works repeatedly, computing is carried out to gathered data and obtains the parameter such as pressure range under normal operating conditions, pressure change slope, and carry out logical operation in conjunction with preset limit pressure spot data, formation control logic;
Step 2, when gather control unit receive sensitive gas probe alarm signal, or receive the limiting pressure data that pressure sensor is preset, or find after carrying out logical operation to the pressure data received to exceed normal pressure excursion, gather control unit and send a series of control instruction, send alarm notification to attendant simultaneously;
Step 3, compressor are closed according to control instruction according to control instruction powered-down, staged isolation valve, refrigeration system circulating line is divided into several sections, safety relief valve opens according to control instruction, release the refrigerating fluid in refrigeration system circulating line to outdoor; Indoor air exhaust system is opened according to control instruction, gets rid of indoor refrigerating fluid gas;
Step 4, attendant process leakage point, again filling refrigerating fluid, make refrigerator system recover normal operating conditions, reenter 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 true CN104567158A (en) | 2015-04-29 |
| CN104567158B CN104567158B (en) | 2017-02-22 |
Family
ID=53083802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410802925.8A Active 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 (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109661547A (en) * | 2016-09-02 | 2019-04-19 | 大金工业株式会社 | Refrigerating plant |
| CN109716043A (en) * | 2016-10-14 | 2019-05-03 | 三电汽车空调系统株式会社 | Air conditioner for motor vehicle |
| EP3569956A4 (en) * | 2017-01-16 | 2020-03-04 | Daikin Industries, Ltd. | Refrigerating device having shutoff valve |
| WO2019166881A3 (en) * | 2019-06-07 | 2020-07-16 | الزيتوني خيري، | Refrigerating circuit comprising electromagnetic valves upstream and downstream of each component of the circuit, allowing refrigerant leaks to be prevented |
| CN112739964A (en) * | 2018-09-06 | 2021-04-30 | 开利公司 | Refrigerant leak detection system |
| WO2021109343A1 (en) * | 2019-12-02 | 2021-06-10 | 广东美的暖通设备有限公司 | Control circuit, air conditioner, and control method |
| WO2021230736A1 (en) | 2020-05-14 | 2021-11-18 | Khiyari Ezzitouni | Improved commercial refrigerator |
| 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 |
| EP4111111A4 (en) * | 2020-02-25 | 2024-04-03 | Lg Electronics Inc | Heat pump and operation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1455186A (en) * | 2002-05-01 | 2003-11-12 | 三星电子株式会社 | Air conditioner and method for detecting refrigrant leakage |
| 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 |
| CN101737878A (en) * | 2009-12-12 | 2010-06-16 | 广东美的电器股份有限公司 | Air conditioner using combustible refrigerant and control method thereof |
| CN102147142A (en) * | 2010-02-08 | 2011-08-10 | Lg电子株式会社 | Air conditioner and method for controlling air conditioner |
| CN104006934A (en) * | 2014-06-05 | 2014-08-27 | 珠海格力电器股份有限公司 | Detection system, method and device and 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 |
-
2014
- 2014-12-19 CN CN201410802925.8A patent/CN104567158B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1455186A (en) * | 2002-05-01 | 2003-11-12 | 三星电子株式会社 | Air conditioner and method for detecting refrigrant leakage |
| 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 |
| CN101737878A (en) * | 2009-12-12 | 2010-06-16 | 广东美的电器股份有限公司 | Air conditioner using combustible refrigerant and control method thereof |
| CN102147142A (en) * | 2010-02-08 | 2011-08-10 | Lg电子株式会社 | Air conditioner and method for controlling air conditioner |
| CN104006934A (en) * | 2014-06-05 | 2014-08-27 | 珠海格力电器股份有限公司 | Detection system, method and device and 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 |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109661547A (en) * | 2016-09-02 | 2019-04-19 | 大金工业株式会社 | Refrigerating plant |
| CN109716043A (en) * | 2016-10-14 | 2019-05-03 | 三电汽车空调系统株式会社 | Air conditioner for motor vehicle |
| CN109716043B (en) * | 2016-10-14 | 2020-12-08 | 三电汽车空调系统株式会社 | Air conditioner for vehicle |
| US10870332B2 (en) | 2016-10-14 | 2020-12-22 | Sanden Automotive Climate Systems Corporation | Vehicle air conditioner |
| EP3569956A4 (en) * | 2017-01-16 | 2020-03-04 | Daikin Industries, Ltd. | Refrigerating device having shutoff valve |
| US10866004B2 (en) | 2017-01-16 | 2020-12-15 | Daikin Industries, Ltd. | Refrigeration apparatus with shutoff valve |
| CN112739964A (en) * | 2018-09-06 | 2021-04-30 | 开利公司 | Refrigerant leak detection system |
| WO2019166881A3 (en) * | 2019-06-07 | 2020-07-16 | الزيتوني خيري، | Refrigerating circuit comprising electromagnetic valves upstream and downstream of each component of the circuit, allowing refrigerant leaks to be prevented |
| WO2021109343A1 (en) * | 2019-12-02 | 2021-06-10 | 广东美的暖通设备有限公司 | Control circuit, air conditioner, and control method |
| EP4111111A4 (en) * | 2020-02-25 | 2024-04-03 | Lg Electronics Inc | Heat pump and operation method thereof |
| WO2021230736A1 (en) | 2020-05-14 | 2021-11-18 | Khiyari Ezzitouni | Improved commercial refrigerator |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104567158B (en) | 2017-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104567158A (en) | System and method for controlling leakage amount of refrigerant of refrigerator system | |
| CN107560112B (en) | A kind of control method of air conditioner refrigerating high temperature-proof protection | |
| CN101566517B (en) | Method for judging refrigerant leakage of air-conditioner | |
| CN110895023B (en) | Air conditioner refrigerant leakage detection method and air conditioner | |
| CN109631229B (en) | Method for judging rapid leakage of refrigerant of refrigeration system | |
| CN104655365A (en) | Method for detecting refrigerant leakage and air conditioner | |
| CN104566863A (en) | Method for detecting refrigerant leakage and air conditioner | |
| CN104344622B (en) | Air-cooled heat pump cold-hot water machine and the antifreeze method of heat exchanger, system | |
| CN104819547A (en) | Method and system for fluorine lacking detection and protection during startup of variable frequency air-conditioning system | |
| CN104964384A (en) | Fluorine-deficient detection and protection method and system during operation of variable-frequency air-conditioning system | |
| CN103104962A (en) | Method for detecting four-way valve of air-conditioner | |
| CN101813396B (en) | Air conditioning unit and method for detecting oil level of compressor thereof | |
| CN105588285A (en) | Air conditioner based on pipeline blocking self-diagnosis method | |
| CN105065249B (en) | Compressor performance detection means, air-conditioning system and control method with the device | |
| CN104566763A (en) | Control method for air-conditioning system, control device and air-conditioning system | |
| CN105954052A (en) | Capillary tube obstruction detection system and method | |
| CN103925677A (en) | Control method and device for air conditioner | |
| CN102818964A (en) | Monitoring device and method of device working conditions based on reverse carnot principle | |
| CN103940158A (en) | Air-conditioning outdoor unit, air-conditioning system and operation method of air-conditioning system | |
| CN103940157A (en) | Air-conditioning outdoor unit, air-conditioning system and shutdown method of air-conditioning system | |
| CN102226550B (en) | Air-conditioner for using flammable refrigeration agent and control method thereof | |
| CN104990173A (en) | Air conditioner, and fireproof control method, controller and air conditioner system thereof | |
| CN104566776A (en) | Control method and control device for water cooling air conditioner unit and water cooling air conditioner unit | |
| CN201852384U (en) | Split type air conditioner | |
| CN102353116A (en) | Explosion-proof control method of multi-connected air conditioning unit at runtime |
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 |