CN103175353A - Defrosting control method suitable for air source heat pump water heater - Google Patents
Defrosting control method suitable for air source heat pump water heater Download PDFInfo
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- CN103175353A CN103175353A CN2011104357300A CN201110435730A CN103175353A CN 103175353 A CN103175353 A CN 103175353A CN 2011104357300 A CN2011104357300 A CN 2011104357300A CN 201110435730 A CN201110435730 A CN 201110435730A CN 103175353 A CN103175353 A CN 103175353A
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Abstract
The invention discloses a defrosting control method suitable for an air source heat pump water heater and relates to the technical field of air conditioners. According to the method, when the temperature T2 of an inlet of an evaporator is equal to or higher than 0 DEG C, defrosting is not carried out, when the temperature T2 is lower than 0 DEG C, environment temperature T1 is equal to or higher than minus 2 DEG C, and the difference between the environment temperature T1 and the temperature T2 of the inlet of the evaporator is larger than 6 DEG C, and a unit runs continuously for more than 25 minutes, the defrosting is carried out, when the temperature T2 is lower than 0 DEG C, the environment temperature T1 is lower than minus 2 DEG C, and the difference between the environment temperature T1 and the temperature T2 of the inlet of the evaporator is larger than 8 DEG C, and the unit runs continuously for more than 30 minutes, the defrosting is carried out, and when the environment temperature T1 is equal to or higher than minus 2 DEG C, the temperature T3 of the evaporator is equal to or higher than 8 DEG C, or defrosting time is longer than 3 minutes, the defrosting is stopped, and when the environment temperature T1 is lower than minus 2 DEG C, the temperature T3 of the evaporator is equal to or higher than 5 DEG C, or defrosting time is longer than 3 minutes, defrosting is stopped. According to the defrosting control method suitable for the air source heat pump water heater, starting and stopping time of the defrosting are comprehensively considered according to a plurality of parameters. The defrosting control method suitable for the air source heat pump water heater has the advantages of being reliable, easy to operate, accurate in defrosting time, and good in defrosting effect.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly be applicable to the defrosting control method of air source hot pump water heater.
Background technology
In prior art, when air source hot pump water heater moved in the winter time, air-side heat exchanger surface frosting meeting affected the operational effect of unit.Have a variety ofly about the mode of defrosting heat pump water heater, present topmost Defrost mode has electric heated defrosting and hot gas bypass defrosting.Although now to the application of hot gas bypass defrosting principle comparative maturity, also there are some problems in a lot of producers on defrosting control method.Can't accurately hold for entering with the exit time system of defrosting, often cause the long or halfway phenomenon that defrosts of defrosting time, affect the stable operation of machine set system.
Summary of the invention
For the deficiency of above-mentioned prior art hot gas bypass defrosting technology, the purpose of this invention is to provide a kind of defrosting control method that is applicable to air source hot pump water heater.It has reliable easily row, defrosting time assurance accurately, the characteristics that defrosting effect is good according to the time that a plurality of parametric synthesis consideration defrostings enter and withdraw from.
In order to reach the foregoing invention purpose, technical scheme of the present invention realizes as follows:
A kind of defrosting control method that is applicable to air source hot pump water heater, it comprises uses the refrigeration system that is comprised of compressor, condenser, reservoir, device for drying and filtering, heating power expansion valve, evaporimeter, gas-liquid separator, defrosting magnetic valve and controller, and its control method step is:
1) enter the control method of defrosting: as the inlet temperature T2 of evaporimeter 〉=0 ℃, do not enter defrosting; When the inlet temperature T2 of evaporimeter＜0 ℃, environment temperature T1 〉=-2 ℃, think easy frosting, if environment temperature T1 this moment deducts the inlet temperature T2 of evaporimeter〉6 ℃, and the unit continuous operating time 25 minutes times, begin to enter defrosting; When the inlet temperature T2 of evaporimeter＜0 ℃, environment temperature T1＜-2 ℃, think to be difficult for frosting, this moment, environment temperature T1 deducted the inlet temperature T2 of evaporimeter〉8 ℃, and the unit continuous operating time 30 minutes times, begin to enter defrosting;
2) withdraw from the control method of defrosting: when environment temperature T1 〉=-2 ℃, defrosting is withdrawed from evaporator temperature T3 〉=8 ℃ or defrosting time 〉=3 minute; When environment temperature T1＜-2 ℃, defrosting is withdrawed from evaporator temperature T3 〉=5 ℃ or defrosting time 〉=3 minute.
The present invention adopts multivariable, multimodal automatic defrosting control method owing to having adopted above-mentioned control method, and the reliability of defrosting and defrosting quality all are greatly improved.When even unit moves in the winter time, frost Formation Mechanism becomes under complicated situation, also can guarantee accurate, stable defrosting effect.
The invention will be further described below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is for using the set structure schematic diagram of control method of the present invention.
The specific embodiment
Referring to Fig. 1, the present invention uses the air-conditioning refrigeration system that comprises that compressor 1, condenser 2, reservoir 3, device for drying and filtering 4, heating power expansion valve 5, evaporimeter 6, gas-liquid separator 7, defrosting magnetic valve 8 and controller 9 form.Its control method step is:
1) enter the control method of defrosting: as the inlet temperature T2 of evaporimeter 6 〉=0 ℃, do not enter defrosting; When the inlet temperature T2 of evaporimeter 6＜0 ℃, environment temperature T1 〉=-2 ℃, think easy frosting, if environment temperature T1 this moment deducts the inlet temperature T2 of evaporimeter 6〉6 ℃, and the unit continuous operating time 25 minutes times, begin to enter defrosting; When the inlet temperature T2 of evaporimeter 6＜0 ℃, environment temperature T1＜-2 ℃, think to be difficult for frosting, this moment, environment temperature T1 deducted the inlet temperature T2 of evaporimeter 6〉8 ℃, and the unit continuous operating time 30 minutes times, begin to enter defrosting.
Withdraw from the control method of defrosting: when environment temperature T1 〉=-2 ℃, defrosting is withdrawed from 3 〉=8 ℃ of evaporimeter 6 temperature T or defrosting time 〉=3 minute; When environment temperature T1＜-2 ℃, defrosting is withdrawed from 3 〉=5 ℃ of evaporimeter 6 temperature T or defrosting time 〉=3 minute.
Claims (1)
1. defrosting control method that is applicable to air source hot pump water heater, it comprises uses the refrigeration system that is comprised of compressor (1), condenser (2), reservoir (3), device for drying and filtering (4), heating power expansion valve (5), evaporimeter (6), gas-liquid separator (7), defrosting magnetic valve (8) and controller (9), and its control method step is:
1) enter the control method of defrosting: as the inlet temperature T2 of evaporimeter (6) 〉=0 ℃, do not enter defrosting; When the inlet temperature T2 of evaporimeter (6)＜0 ℃, environment temperature T1 〉=-2 ℃, think easy frosting, if environment temperature T1 this moment deducts the inlet temperature T2 of evaporimeter (6)〉6 ℃, and the unit continuous operating time 25 minutes times, begin to enter defrosting; When the inlet temperature T2 of evaporimeter (6)＜0 ℃, environment temperature T1＜-2 ℃, think to be difficult for frosting, this moment, environment temperature T1 deducted the inlet temperature T2 of evaporimeter (6)〉8 ℃, and the unit continuous operating time 30 minutes times, begin to enter defrosting;
2) withdraw from the control method of defrosting: when environment temperature T1 〉=-2 ℃, defrosting is withdrawed from 3 〉=8 ℃ of evaporimeter (6) temperature T or defrosting time 〉=3 minute; When environment temperature T1＜-2 ℃, defrosting is withdrawed from 3 〉=5 ℃ of evaporimeter (6) temperature T or defrosting time 〉=3 minute.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110435730.0A CN103175353B (en) | 2011-12-23 | 2011-12-23 | A kind of defrosting control method being applicable to air source hot pump water heater |
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| CN201110435730.0A CN103175353B (en) | 2011-12-23 | 2011-12-23 | A kind of defrosting control method being applicable to air source hot pump water heater |
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| CN103175353A true CN103175353A (en) | 2013-06-26 |
| CN103175353B CN103175353B (en) | 2015-08-19 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106091466A (en) * | 2016-07-29 | 2016-11-09 | 北京华誉能源技术股份有限公司 | A kind of have the air-cooled heat pump unit that defrosting controls |
| CN106288560A (en) * | 2016-08-15 | 2017-01-04 | 深圳市派沃新能源科技股份有限公司 | A kind of net for air-source heat pump units Defrost method |
| WO2017185707A1 (en) * | 2016-04-26 | 2017-11-02 | 广东美的暖通设备有限公司 | Heat pump water heater and defrosting control method and device thereof |
| CN110595122A (en) * | 2018-06-12 | 2019-12-20 | 浙江盾安机电科技有限公司 | Defrosting control method, device and system for heat pump |
| CN111964300A (en) * | 2020-08-17 | 2020-11-20 | 广东美的暖通设备有限公司 | Control method and device of air source heat pump equipment, equipment and readable storage medium |
| CN114413534A (en) * | 2022-01-11 | 2022-04-29 | 珠海格力电器股份有限公司 | Defrosting control method, device, equipment, computer equipment and electronic equipment |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017185707A1 (en) * | 2016-04-26 | 2017-11-02 | 广东美的暖通设备有限公司 | Heat pump water heater and defrosting control method and device thereof |
| CN106091466A (en) * | 2016-07-29 | 2016-11-09 | 北京华誉能源技术股份有限公司 | A kind of have the air-cooled heat pump unit that defrosting controls |
| CN106288560A (en) * | 2016-08-15 | 2017-01-04 | 深圳市派沃新能源科技股份有限公司 | A kind of net for air-source heat pump units Defrost method |
| CN110595122A (en) * | 2018-06-12 | 2019-12-20 | 浙江盾安机电科技有限公司 | Defrosting control method, device and system for heat pump |
| CN110595122B (en) * | 2018-06-12 | 2022-03-08 | 浙江盾安机电科技有限公司 | Defrosting control method, device and system for heat pump |
| CN111964300A (en) * | 2020-08-17 | 2020-11-20 | 广东美的暖通设备有限公司 | Control method and device of air source heat pump equipment, equipment and readable storage medium |
| CN114413534A (en) * | 2022-01-11 | 2022-04-29 | 珠海格力电器股份有限公司 | Defrosting control method, device, equipment, computer equipment and electronic equipment |
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| Publication number | Publication date |
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| CN103175353B (en) | 2015-08-19 |
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