CN103557578B - Air-cooled modular cold and hot water unit lacks the guard method of fluorine - Google Patents
Air-cooled modular cold and hot water unit lacks the guard method of fluorine Download PDFInfo
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- CN103557578B CN103557578B CN201310537943.3A CN201310537943A CN103557578B CN 103557578 B CN103557578 B CN 103557578B CN 201310537943 A CN201310537943 A CN 201310537943A CN 103557578 B CN103557578 B CN 103557578B
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Abstract
The invention provides the guard method that a kind of air-cooled modular cold and hot water unit lacks fluorine, when refrigeration or dehumidification mode: judge after compressor start whether running time reaches t, if then Td, Tcm, Tei, Ts and degree EEV, judge whether to meet Td-Tcm >=a1, Ts-Tei >=b1, EEV >=c1 simultaneously, if then compressor emergency shutdown, then continue if not to run; During heating mode: judge whether reach t running time after compressor start, whether defrost; if enter defrosting and do not arrive t; then reclocking after defrosting; judge whether running time reaches t; if then measure Td, Tde, Tei, Ts and EEV, if reach t running time, measure Td, Tde, Tei, Ts and EEV, judge whether to meet Td-Tei >=a2, Ts-Tde >=b2, EEV >=c2 simultaneously; if then compressor emergency shutdown, then continue if not to run.The method is simple, reliable.
Description
Technical field
The present invention relates to the guard method that a kind of air-conditioner set lacks fluorine, be specifically related to the guard method that a kind of air-cooled modular cold and hot water unit lacks fluorine.
Background technology
Air-cooled modular cold and hot water unit due to solder joint more, the ubiquity refrigrant leakage problem when accumulating, operation, holding state.With regard to current generator protection measure, only have and (generally freeze more than 40% when a large amount of refrigrant leakage occurs unit, heat more than 60%), unit just there will be low-voltage variation or delivery temperature is protected and shuts down.And before not reaching this leakage rate, unit will, at scarce fluorine state longtime running, cause compressor to damage because of motor overheating or insufficient lubrication, have a strong impact on the service life of compressor.
Conventional air-conditioner generally carries out scarce fluorine protection according to indoor set coil temperature.Publication number is the determination methods that CN101566517A patent discloses a kind of refrigerant leakage of air-conditioner, and the difference according to indoor coil pipe and indoor environment temperature carries out scarce fluorine protection.But for air-cooled modular cold and hot water unit, be without indoor set.Therefore these class methods cannot be applied to the scarce fluorine protection of air-cooled modular cold and hot water unit.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of scarce fluorine guard method that is simple, air-cooled modular cold and hot water unit reliably.
The technical solution adopted in the present invention is:
Air-cooled modular cold and hot water unit lacks a guard method for fluorine, wherein:
Comprise the following steps when refrigeration or dehumidification mode:
(1), after compressor start, timing is started;
(2) judge whether running time reaches t minute, if it is measure temperature Tcm, water-side heat liquid pipe temperature Tei, suction temperature Ts and electronic expansion valve opening EEV in delivery temperature Td, outdoor finned heat exchanger dish, if otherwise continue timing;
(3) calculate Td-Tcm, Ts-Tei, judge whether following three conditions meet: Td-Tcm >=a1, Ts-Tei >=b1, EEV >=c1 simultaneously, if it is compressor emergency shutdown report fault, if otherwise unit continue to run.
Comprise the following steps during heating mode:
(1), after compressor start, timing is started;
(2) judge whether running time reaches t minute, detect unit simultaneously and whether enter defrosting, if detecting unit is enter defrosting not reach t minute running time, at the end of defrosting or when the rear compressor that defrosted restarts, timing resets and reclocking, judge whether running time reaches t minute, if it is delivery temperature Td is measured, outdoor finned heat exchanger is tried to get to the heart of a matter temperature Tde, water-side heat liquid pipe temperature Tei, suction temperature Ts and electronic expansion valve opening EEV, if otherwise continue timing, if detection unit does not enter defrosting, running time reaches t minute, measures delivery temperature Td, outdoor finned heat exchanger is tried to get to the heart of a matter temperature Tde, water-side heat liquid pipe temperature Tei, suction temperature Ts and electronic expansion valve opening EEV, if detection unit does not enter defrosting do not reach t minute running time, continue timing,
(3) calculate Td-Tei, Ts-Tde, judge whether following three conditions meet: Td-Tei >=a2, Ts-Tde >=b2, EEV >=c2 simultaneously, if it is compressor emergency shutdown report fault, if otherwise unit continue to run.
T described in the present invention minute is 10 ~ 15 minutes.
A1 described in the present invention is 45 ~ 50 DEG C; Described b1 is 7 ~ 10 DEG C; Described c1 is 470.
A2 described in the present invention is 55 ~ 60 DEG C; Described b2 is 10 ~ 15 DEG C; Described c2 is 470.
Air-cooled modular cold and hot water unit of the present invention lacks the guard method of fluorine, compared with prior art, have the following advantages: this method solve air-cooled modular cold and hot water unit because carrying out according to the difference of indoor set indoor coil pipe and indoor environment temperature the problem that judges whether cold-producing medium leaks and scarce fluorine is protected without indoor set; The method just can carry out shutting down the protection of scarce fluorine when low-voltage variation or delivery temperature protection do not appear in unit, avoids the faults such as the compressor damage that unit causes because lacking the operation of fluorine state for a long time; Temperature sensor in the exhaust gas temperature sensor that the method can adopt air-cooled modular cold and hot water unit usually to configure, suction temperature sensor, outdoor finned heat exchanger dish, outdoor finned heat exchanger are tried to get to the heart of a matter temperature sensor, water-side heat liquid pipe temperature sensor, do not need to increase temperature sensor in addition, thus simple and easy to do, cost is lower.In addition, the method judges except adopting the temperature difference, also introduces the judgement of electronic expansion valve opening, improves the accuracy of judgement, reduce probability of miscarriage of justice.
Accompanying drawing explanation
Fig. 1 is the systematic schematic diagram of air-cooled modular cold and hot water unit of the present invention;
Fig. 2 is the flow chart of guard method under refrigeration or dehumidification mode that the embodiment of the present invention 1 air-cooled modular cold and hot water unit lacks fluorine;
Fig. 3 is the flow chart in a heating mode that the embodiment of the present invention 2 air-cooled modular cold and hot water unit lacks the guard method of fluorine.
Wherein: 1, water-side heat; 2, cross valve; 3, outdoor finned heat exchanger; 4, temperature sensor in dish; 5, to try to get to the heart of a matter temperature sensor; 6, exhaust gas temperature sensor; 7, compressor; 8, suction temperature sensor; 9, gas-liquid separator; 10, filter; 11, electric expansion valve; 12, liquid pipe temperature sensor.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further described in detail, but the present invention is not only confined to following specific embodiment.
Embodiment 1:
The scarce fluorine guard method of air-cooled modular cold and hot water unit under refrigeration or dehumidification mode, comprises the following steps:
After user sends refrigeration start-up command by line control machine, compressor 7 starts, and starts timing.
Judge whether running time reaches 15 minutes.If reach 15 minutes, then record liquid pipe temperature Tei, the suction temperature Ts of suction temperature sensor 8 and the aperture EEV of electric expansion valve 11 of the liquid pipe temperature sensor 12 in the dish of temperature sensor 4 in dish on the delivery temperature Td of exhaust gas temperature sensor 6, outdoor finned heat exchanger 3 on temperature Tcm, water-side heat 1 side liquid pipe, and calculate Td-Tcm, Ts-Tei; If do not reach 15 minutes, then continue timing.
Judge whether following three conditions meet simultaneously: Td-Tcm >=50 DEG C, Ts-Tei >=10 DEG C, EEV >=470 DEG C.If met, then compressor emergency shutdown report fault; If do not met, then unit continues to run.
Embodiment 2:
The scarce fluorine guard method of air-cooled modular cold and hot water unit under heating mode, comprises the following steps:
After user sends refrigeration start-up command by line control machine, compressor 7 starts, and starts timing.
To in 15 minutes these time periods from timing, detect unit and whether enter defrosting.
If enter defrosting, then, at the end of defrosting or when the rear compressor 7 that defrosted restarts, timing resets and reclocking.Judge whether running time reaches 15 minutes.If reach 15 minutes, then record liquid pipe temperature Tei, the suction temperature Ts of suction temperature sensor 8 and the aperture EEV of electric expansion valve 11 of the liquid pipe temperature sensor 12 on the temperature Tde that tries to get to the heart of a matter of temperature sensor 5 that the delivery temperature Td of exhaust gas temperature sensor 6, outdoor finned heat exchanger 3 try to get to the heart of a matter, water-side heat 1 side liquid pipe, and calculate Td-Tei, Ts-Tde.If do not reach 15 minutes, then continue timing.Then judge whether following three conditions meet simultaneously: Td-Tei >=60 DEG C, Ts-Tde >=10 DEG C, EEV >=470.If met, then compressor emergency shutdown report fault; If do not met, then unit continues to run.
If do not enter defrosting always, then judge whether running time reaches 15 minutes.If reach 15 minutes, then record liquid pipe temperature Tei, the suction temperature Ts of suction temperature sensor 8 and the aperture EEV of electric expansion valve 11 of the liquid pipe temperature sensor 12 on the temperature Tde that tries to get to the heart of a matter of temperature sensor 5 that the delivery temperature Td of exhaust gas temperature sensor 6, outdoor finned heat exchanger 3 try to get to the heart of a matter, water-side heat 1 side liquid pipe, and calculate Td-Tei, Ts-Tde.If do not reach 15 minutes, then continue timing.Then judge whether following three conditions meet simultaneously: Td-Tei >=60 DEG C, Ts-Tde >=10 DEG C, EEV >=470.If met, then compressor emergency shutdown report fault; If do not met, then unit continues to run.
The above embodiment of the present invention can not be used for limiting the present invention to explanation of the present invention, and any change in the implication suitable with claims of the present invention and scope, all should think to be included in the scope of claims.
Claims (2)
1. air-cooled modular cold and hot water unit lacks a guard method for fluorine, it is characterized in that:
Comprise the following steps when refrigeration or dehumidification mode:
(1), after compressor start, timing is started,
(2) judge whether running time reaches t minute, if it is measure temperature Tcm, water-side heat liquid pipe temperature Tei, suction temperature Ts and electronic expansion valve opening EEV in delivery temperature Td, outdoor finned heat exchanger dish, if otherwise continue timing,
(3) calculate Td-Tcm, Ts-Tei, judge whether following three conditions meet: Td-Tcm >=a1, Ts-Tei >=b1, EEV >=c1 simultaneously, if it is compressor emergency shutdown report fault, if otherwise unit continue to run;
Comprise the following steps during heating mode:
(1), after compressor start, timing is started,
(2) judge whether running time reaches t minute, detect unit simultaneously and whether enter defrosting, if detecting unit is enter defrosting not reach t minute running time, at the end of defrosting or when the rear compressor that defrosted restarts, timing resets and reclocking, judge whether running time reaches t minute, if it is delivery temperature Td is measured, outdoor finned heat exchanger is tried to get to the heart of a matter temperature Tde, water-side heat liquid pipe temperature Tei, suction temperature Ts and electronic expansion valve opening EEV, if otherwise continue timing, if detection unit does not enter defrosting, running time reaches t minute, measures delivery temperature Td, outdoor finned heat exchanger is tried to get to the heart of a matter temperature Tde, water-side heat liquid pipe temperature Tei, suction temperature Ts and electronic expansion valve opening EEV, if detection unit does not enter defrosting do not reach t minute running time, continue timing,
(3) calculate Td-Tei, Ts-Tde, judge whether following three conditions meet: Td-Tei >=a2, Ts-Tde >=b2, EEV >=c2 simultaneously, if it is compressor emergency shutdown report fault, if otherwise unit continue to run;
Described a1 is 45 ~ 50 DEG C; Described b1 is 7 ~ 10 DEG C; Described c1 is 470;
Described a2 is 55 ~ 60 DEG C; Described b2 is 10 ~ 15 DEG C; Described c2 is 470.
2. air-cooled modular cold and hot water unit according to claim 1 lacks the guard method of fluorine, it is characterized in that: described t minute is 10 ~ 15 minutes.
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| CN201310537943.3A CN103557578B (en) | 2013-11-04 | 2013-11-04 | Air-cooled modular cold and hot water unit lacks the guard method of fluorine |
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| CN201310537943.3A CN103557578B (en) | 2013-11-04 | 2013-11-04 | Air-cooled modular cold and hot water unit lacks the guard method of fluorine |
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| CN103557578A CN103557578A (en) | 2014-02-05 |
| CN103557578B true CN103557578B (en) | 2016-02-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107477778A (en) * | 2017-08-11 | 2017-12-15 | 宁波奥克斯电气股份有限公司 | Air-conditioning heating lacks fluorine protection and prevents the control method of high frequent overload protection |
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|---|---|---|---|---|
| CN104949278A (en) * | 2015-06-25 | 2015-09-30 | 海信（山东）空调有限公司 | Method and device for detecting refrigerant leakage of air conditioner and air-conditioning device |
| CN107525208A (en) * | 2017-07-10 | 2017-12-29 | 珠海格力电器股份有限公司 | Air conditioner fluorine deficiency detection method and device |
| CN110243114A (en) * | 2018-03-07 | 2019-09-17 | 佛山市顺德区美的饮水机制造有限公司 | Water dispenser and its refrigeration fault detection method |
| CN109114748A (en) * | 2018-08-20 | 2019-01-01 | 宁波奥克斯电气股份有限公司 | A kind of air-conditioning delays frosting control method, device and air conditioner |
| CN110940091B (en) * | 2019-12-09 | 2020-11-24 | 珠海格力电器股份有限公司 | Fluorine deficiency judgment method and heat pump water heater |
| CN113531942A (en) * | 2021-07-28 | 2021-10-22 | 广东纽恩泰新能源科技发展有限公司 | Automatic control method and device for heat pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107477778A (en) * | 2017-08-11 | 2017-12-15 | 宁波奥克斯电气股份有限公司 | Air-conditioning heating lacks fluorine protection and prevents the control method of high frequent overload protection |
| CN107477778B (en) * | 2017-08-11 | 2019-10-18 | 宁波奥克斯电气股份有限公司 | Air-conditioning heating lacks fluorine protection and prevents the control method of high frequent overload protection |
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| CN103557578A (en) | 2014-02-05 |
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Address after: 315191 Zhejiang city of Ningbo province Jiangshan town Yinzhou District Mingguang Road No. 1166 Applicant after: NINGBO AUX ELECTRIC CO., LTD. Address before: 315191 Zhejiang city of Ningbo province Jiangshan town Yinzhou District Mingguang Road No. 1166 Applicant before: Ningbo AUX Electric Co., Ltd. |
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