CN106705347B - A kind of intelligent defrosting method of transducer air conditioning - Google Patents

A kind of intelligent defrosting method of transducer air conditioning Download PDF

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Publication number
CN106705347B
CN106705347B CN201610950791.3A CN201610950791A CN106705347B CN 106705347 B CN106705347 B CN 106705347B CN 201610950791 A CN201610950791 A CN 201610950791A CN 106705347 B CN106705347 B CN 106705347B
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defrost
outer ring
external disk
temperature
judge
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CN106705347A (en
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应必业
颜景旭
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Aux Air Conditioning Co Ltd
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Aux Air Conditioning Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/41—Defrosting; Preventing freezing
    • F24F11/42—Defrosting; Preventing freezing of outdoor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Signal Processing (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The present invention provides a kind of intelligent defrosting method of transducer air conditioning, pass through indoor coil pipe, indoor environment temperature, outdoor coil temperature, the range of outdoor environment temperature and the difference of relevant temperature and heating operation duration, the a series of composite factor such as cumulative time judges whether air-conditioning enters defrost program, and defrost exit criteria is determined according to the factors such as defrost duration and the range of outer machine coil temperature, it is simple to can solve defrost condition setting existing in the prior art, there may be frostless accidentally defrost, the thin frequency defrost of frost, the case where thick frost not defrost, the technical issues of influencing air-conditioning heating effect.A kind of intelligent defrosting method of convertible frequency air-conditioner provided by the invention, the degree of intelligence of air-conditioning defrost can be improved, reaching has white defrost, frostless not defrost, frosting to reache a certain level and start defrost again, the clean timely effect of outdoor unit defrost, the efficiency that the accurate defrost of air-conditioning can be effectively improved improves the heating performance of air-conditioning.

Description

A kind of intelligent defrosting method of transducer air conditioning
Technical field
The invention belongs to airconditioning control fields, more particularly, to a kind of intelligent defrosting method of transducer air conditioning.
Background technique
Traditional frequency conversion air-conditioning all uses outdoor coil temperature T at presentExternal diskWith outdoor environment temperature TOuter ringTo determine whether there is frost And carry out defrost.For example T is applied aloneExternal disk< -8 DEG C, as the condition for entering defrost, will certainly cause when outdoor temperature is lower than -8 DEG C Air-conditioning timing carry out defrost, regardless of outdoor unit whether frosting, cause it is frostless accidentally defrost, influence heating effect.
For another example increase TInner ringAs decision condition, TInner ring-TExternal disk9 DEG C of >, the simple scheme of former of such scheme ratio It is relatively reasonable, because only that T can just be made by having tied white heat exchanger effect variationInner ringAnd TExternal diskBetween difference become larger, pass through such side The probability of frostless accidentally defrost can be greatly reduced in formula.But it can be because of T after outer machine frostingInner ringHeight and cause TInner ring-TExternal diskDifference The difference of value has tied the frost of same thickness, has worked as TInner ringAt=0 DEG C, TInner ring-TExternal disk=11 DEG C, and in TInner ringAt=- 10 DEG C, TInner ring-TExternal disk =8 DEG C, in order to avoid there is frost not change, all the smaller of difference setting so can then be caused TInner ringThere is frostless mistake compared with Gao Shiyi Defrost or thin frost frequently defrost and frost it is thick do not start also defrost as a result, influencing heating effect.
Summary of the invention
It is simple that the present invention mainly solves the setting of air-conditioning defrost condition present in the prior art, and when air-conditioning defrost is easy nothing The case where white defrost, white thin frequency defrost, leads to the technical problem of air-conditioning heating effect difference, a kind of intelligence of transducer air conditioning is provided Defrosting method.
Above-mentioned technical problem of the invention is mainly to be addressed by following technical proposals: a kind of transducer air conditioning Intelligent defrosting method, comprising the following steps:
(1) air-conditioning booting is run with heating mode；
(2) outdoor coil temperature T is detectedExternal disk, outdoor environment temperature TOuter ring, indoor coil pipe TInner disc, indoor environment temperature TInner ring；
(3) judge outdoor environment temperature TOuter ringRange and temperature difference △ T1=TOuter ring-TExternal diskRange meets the condition of setting then Enter step (4)；
(4) judge whether compressor continuous operating time t1 meets setting condition t1 >=t0, if so, entering step (5)；
(5) judge whether compressor accumulated running time t2 meets setting condition t2 >=t3, if then entering step (8), If it is not, then entering step (6)；
(6) judge whether compressor accumulated running time t2 meets setting condition t2 >=t4, if so, entering step (7)；
(7) judge △ T2=TInner disc-TInner ringWhether satisfaction imposes a condition, if so, entering step (8)；
(8) judge outdoor coil temperature TExternal diskWhether set temperature T0 is less than or equal to, if so, entering step (9)；
(9) enter the defrost stage.
(10) defrost meets predetermined condition, exits defrost.
Preferably, setting condition described in each of the above step is different.
Preferably, the above t0 < t4 < t3.
Preferably, a kind of intelligent defrosting method of transducer air conditioning, comprising the following steps:
(1) air-conditioning booting is run with heating mode；
(2) outdoor coil temperature T is detectedExternal disk, outdoor environment temperature TOuter ring, indoor coil pipe TInner disc, indoor environment temperature TInner ring；
(3) judge outdoor environment temperature TOuter ringRange and temperature difference △ T1=TOuter ring-TExternal diskWhether range meets the following conditions, Any one in if the following conditions are met then enters step (4):
(4) judge whether compressor continuous operating time t1 meets setting condition t1 >=5min, if so, entering step (5)；
(5) judge whether compressor accumulated running time t2 meets setting condition t2 >=180min, if then entering step (8), if it is not, then entering step (6)；
(6) judge whether compressor accumulated running time t2 meets setting condition t2 >=45min, if so, entering step (7)；
(7) judge △ T2=TInner disc-TInner ringWhether 17 DEG C of < of satisfaction setting condition △ T2, if so, entering step (8)；
(8) judge outdoor coil temperature TExternal diskWhether be less than or equal to set temperature T0, wherein T0=-3 DEG C, if so, into Step (9)；
(9) enter defrost program.
(10) defrost meets predetermined condition, exits defrost.
Preferably, defrost described above meets predetermined condition, including the following conditions:
A) defrost exit criteria one: defrost time >=9min；
B) defrost exit criteria two: after defrost carries out 2min, if TExternal disk>=8 DEG C and continue 60S or more；
C) defrost exit criteria three: after defrost carries out 2min, if TExternal disk>=12 DEG C and continue 10S or more.
The invention has the beneficial effects that: pass through indoor coil pipe, indoor environment temperature, outdoor coil temperature, room The range of external environment temperature and the difference of relevant temperature and heating operation duration, cumulative time etc. it is a series of it is comprehensive because Element judges whether determining air-conditioning enters defrost program, and according to the factors such as defrost duration and the range of outer machine coil temperature It determines defrost exit criteria, can solve defrost condition setting existing in the prior art simply, may there is frostless mistakeization The case where frost, the thin frequency defrost of frost, thick white not defrost, the technical issues of influencing air-conditioning heating effect.A kind of change provided by the invention The intelligent defrosting method of frequency air-conditioning, can be improved the degree of intelligence of air-conditioning defrost, and reaching has white defrost, frostless not defrost, frosting It reaching a certain level and starts defrost again, the clean timely effect of outdoor unit defrost can effectively improve the efficiency of the accurate defrost of air-conditioning, Improve the heating performance of air-conditioning.
Detailed description of the invention
Fig. 1 is a kind of intelligent defrosting method of transducer air conditioning provided by the invention.
A kind of Fig. 2 embodiment of the intelligent defrosting method of transducer air conditioning provided by the invention.
Wherein, △ T1=TOuter ring-TExternal disk, △ T2=TInner disc-TInner ring。
Specific embodiment
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.The reality The example for applying example is shown in the accompanying drawings, and in which the same or similar labels are throughly indicated same or similar original part or has The element of same or like function.
The present invention provides a kind of intelligent defrosting method of transducer air conditioning, includes the following steps, as shown in Figure 1:
(1) air-conditioning booting is run with heating mode；
(2) outdoor coil temperature T is detectedExternal disk, outdoor environment temperature TOuter ring, indoor coil pipe TInner disc, indoor environment temperature TInner ring；
(3) judge outdoor environment temperature TOuter ringRange and temperature difference △ T1=TOuter ring-TExternal diskRange meets the condition of setting then Enter step (4)；
(4) judge whether compressor continuous operating time t1 meets setting condition t1 >=t0, if so, entering step (5)；
(5) judge whether compressor accumulated running time t2 meets setting condition t2 >=t3, if then entering step (8), If it is not, then entering step (6)；
(6) judge whether compressor accumulated running time t2 meets setting condition t2 >=t4, if so, entering step (7)；
(7) judge △ T2=TInner disc-TInner ringWhether satisfaction imposes a condition, if so, entering step (8)；
(8) judge outdoor coil temperature TExternal diskWhether set temperature T0 is less than or equal to, wherein T0 is a determining numerical value, It is obtained according to many experiments result, if so, entering step (9)；
(9) enter the defrost stage.
(10) defrost meets predetermined condition, exits defrost.
Further specifically, setting condition described in each of the above step is different.It is specific according to experimental data setting Condition and range, including temperature, time etc..
Further specifically, t0 < t4 < t3 described above.Set temperature obtains approximate range all in accordance with experimental result, can With the specific optimum implementation of determination.
As most preferred embodiment therein, the present invention provides a kind of following intelligent defrosting side of specific transducer air conditioning Method, as shown in Figure 2, comprising the following steps:
(1) air-conditioning booting is run with heating mode；
(2) outdoor coil temperature T is detectedExternal disk, outdoor environment temperature TOuter ring, indoor coil pipe TInner disc, indoor environment temperature TInner ring；
(3) judge outdoor environment temperature TOuter ringRange and temperature difference △ T1=TInner ring-TExternal diskWhether range meets the following conditions, Any one in if the following conditions are met then enters step (4):
(4) judge whether compressor continuous operating time t1 meets setting condition t1 >=5min, if so, entering step (5)；
(5) judge whether compressor accumulated running time t2 meets setting condition t2 >=180min, if then entering step (8), if it is not, then entering step (6)；
(6) judge whether compressor accumulated running time t2 meets setting condition t2 >=45min, if so, entering step (7)；
(7) judge △ T2=TInner disc-TInner ringWhether 17 DEG C of < of satisfaction setting condition △ T2, if so, entering step (8)；
(8) judge outdoor coil temperature TExternal diskWhether be less than or equal to set temperature T0, wherein T0=-3 DEG C, if so, into Step (9)；
(9) enter defrost program.
(10) defrost meets predetermined condition, exits defrost.
Further specifically, defrost described above meets predetermined condition, including the following conditions:
A) defrost exit criteria one: defrost time >=9min；
B) defrost exit criteria two: after defrost carries out 2min, if TExternal disk>=8 DEG C and continue 60S or more；
C) defrost exit criteria three: after defrost carries out 2min, if TExternal disk>=12 DEG C and continue 10S or more；
Further specifically, defrost action sequence are as follows:
When defrost starts, compressor, indoor fan, outdoor fan are closed, and four-way valve is closed after 25s, are compressed after 5s Machine turns on into defrost operation；When defrost terminates to exit, compressor is closed, outdoor fan is opened, and four-way valve is opened after 25s, then Compressor is opened after crossing 5s, and air-conditioning restores normal heating operation, and indoor fan is run by anti-cold wind.
Compared with the prior art, the advantages of the present invention are as follows:
1, can accomplish there is white defrost, frostless not defrost starts defrost when frosting is to certain thickness, outdoor unit defrost it is clean and When, the rear remaining frosting area of outdoor unit is no more than the 5% of condenser front face area after each defrost；
2, heating effect, 95% of heating capacity not less than nameplate regulation heating capacity are not influenced；
3, defrosting function meets concerned countries standard prescribed requirement, integrates Multiple factors, and effect is more preferable.
The above is only preferred embodiments of the present invention, are not intended to limit the implementation manners and the protection scope of the present invention, right For those skilled in the art, it should can appreciate that and all replace with being equal made by description of the invention and diagramatic content It changes and obviously changes obtained scheme, should all be included within the scope of the present invention.

Claims (5)

1. a kind of intelligent defrosting method of transducer air conditioning, it is characterised in that: the following steps are included:
(1) air-conditioning booting is run with heating mode；
(2) outdoor coil temperature T is detectedExternal disk, outdoor environment temperature TOuter ring, indoor coil pipe TInner disc, indoor environment temperature TInner ring；
(3) judge outdoor environment temperature TOuter ringRange and temperature difference T1=TOuter ring-TExternal diskWhether range meets the following conditions, if full Any one in sufficient the following conditions then enters step (4):
TOuter ring Δ T1=TOuter ring-TExternal disk TOuter ring0 DEG C of > ΔT1≥12℃ - 5 DEG C of < TOuter ring≤0℃ ΔT1≥10℃ - 10 DEG C of < TOuter ring≤-5℃ ΔT1≥9℃ - 15 DEG C of < TOuter ring≤-10℃ ΔT1≥8℃ TOuter ring≤-15℃ ΔT1≥7℃
(4) judge whether compressor continuous operating time t1 meets setting condition t1 >=t0, if so, entering step (5)；
(5) judge whether compressor accumulated running time t2 meets setting condition t2 >=t3, if then entering step (8), if it is not, Then enter step (6)；
(6) judge whether compressor accumulated running time t2 meets setting condition t2 >=t4, if so, entering step (7)；
(7) judge Δ T2=TInner disc-TInner ringWhether satisfaction imposes a condition: 17 DEG C of Δ T2 <, if so, entering step (8)；
(8) judge outdoor coil temperature TExternal diskWhether set temperature T0 is less than or equal to, if so, entering step (9)；
(9) enter the defrost stage；
(10) defrost meets predetermined condition, exits defrost.
2. a kind of intelligent defrosting method of transducer air conditioning according to claim 1, it is characterised in that: described in each step Setting condition it is different.
3. a kind of intelligent defrosting method of transducer air conditioning according to claim 1, it is characterised in that: the t0 < t4 < t3。
4. a kind of intelligent defrosting method of transducer air conditioning according to claim 1, it is characterised in that: including following step Rapid: (1) air-conditioning booting is run with heating mode；
(2) outdoor coil temperature T is detectedExternal disk, outdoor environment temperature TOuter ring, indoor coil pipe TInner disc, indoor environment temperature TInner ring；
(3) judge outdoor environment temperature TOuter ringRange and temperature difference T1=TOuter ring-TExternal diskWhether range meets the following conditions, if full Any one in sufficient the following conditions then enters step (4):
TOuter ring Δ T1=TOuter ring-TExternal disk TOuter ring0 DEG C of > ΔT1≥12℃ - 5 DEG C of < TOuter ring≤C℃ ΔT1≥10℃ - 10 DEG C of < TOuter ring≤-5℃ ΔT1≥9℃ - 15 DEG C of < TOuter ring≤-10℃ ΔT1≥8℃ TOuter ring≤-15℃ ΔT1≥7℃
(4) judge whether compressor continuous operating time t1 meets setting condition t1 >=5min, if so, entering step (5)；
(5) judge whether compressor accumulated running time t2 meets setting condition t2 >=180min, if then entering step (8), If it is not, then entering step (6)；
(6) judge whether compressor accumulated running time t2 meets setting condition t2 >=45min, if so, entering step (7)；
(7) judge Δ T2=TInner disc-TInner ringWhether 17 DEG C of < of satisfaction setting condition Δ T, if so, entering step (8)；
(8) judge outdoor coil temperature TExternal diskWhether set temperature T0, wherein T0=-3 DEG C, i.e. T are less than or equal toExternal disk≤ -3 DEG C, if It is then to enter step (9)；
(9) enter defrost program；
(10) defrost meets predetermined condition, exits defrost.
5. a kind of intelligent defrosting method of transducer air conditioning according to claim 4, it is characterised in that: the defrost meets Predetermined condition, including the following conditions:
Defrost exit criteria one: defrost time >=9min；
Defrost exit criteria two: after defrost carries out 2min, if TExternal disk>=8 DEG C and continue 60S or more；
Defrost exit criteria three: after defrost carries out 2min, if TExternal disk>=12 DEG C and continue 10S or more.
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