CN104567163B - Air source heat pump defrosting control method - Google Patents
Air source heat pump defrosting control method Download PDFInfo
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- CN104567163B CN104567163B CN201510019871.2A CN201510019871A CN104567163B CN 104567163 B CN104567163 B CN 104567163B CN 201510019871 A CN201510019871 A CN 201510019871A CN 104567163 B CN104567163 B CN 104567163B
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- temperature
- air source
- heat pump
- control method
- heat exchanger
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- 238000010257 thawing Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 239000000523 sample Substances 0.000 claims description 23
- PIRWNASAJNPKHT-SHZATDIYSA-N pamp Chemical compound C([C@@H](C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CC=1C2=CC=CC=C2NC=1)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CC=1C2=CC=CC=C2NC=1)C(=O)N[C@@H](C)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CO)C(=O)N[C@@H](CCCNC(N)=N)C(N)=O)NC(=O)[C@H](CCC(O)=O)NC(=O)[C@H](CO)NC(=O)[C@H](C)NC(=O)[C@@H](NC(=O)[C@H](CC(O)=O)NC(=O)[C@H](CC(C)C)NC(=O)[C@H](CCCNC(N)=N)NC(=O)[C@H](C)N)C(C)C)C1=CC=CC=C1 PIRWNASAJNPKHT-SHZATDIYSA-N 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 9
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 210000003739 neck Anatomy 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- 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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
-
- 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
- F25B2347/00—Details for preventing or removing deposits or corrosion
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/11—Sensor to detect if defrost is necessary
Abstract
The invention discloses an air source heat pump defrosting control method. An applicable target of the air source heat pump defrosting control method is an air source heat pump system which uses water or other heat conduction liquid as a medium to emit heat. The air source heat pump defrosting control method includes: using a heat energy change judgment method to judge frosting states of a finned tube heat exchanger or a micro channel heat exchanger by detecting actual changes of generated heat of an air source heat pump: if no frost is generated under the circumstance that environment temperature does not change, keeping the generated heat of the air source heat pump at a relatively stable state; using the phenomena that the amount of the frost is increased and the amount of the generated heat of the air source heat pump is decreased as an important basis for judging whether the frost needs to be removed. The air source heat pump defrosting control method is accurate in defrosting judgment rate, can not cause a large number of meaningless defrosting actions, and saves time and energy.
Description
Technical field
The present invention relates to the field of air source heat pump, more particularly to a kind of air source heat pump defrosting control method, it is right to be applicable
As if the air source heat pump system heated with water or other heat-conducting liquids as medium.
Background technology
Air source heat pump product is in the winter time in heating operations, finned tube exchanger or micro-channel heat exchanger due to temperature compared with
Phenomenon that is low and easily producing hydrogenesis and frosting, influences the lasting heat exchange of heat exchanger, it is necessary to take suitable defrosting operation,
The melts of heat exchanger surface are fallen, in order to heat pump continuous service.
The conventional method of the action of control defrosting at present is Temperature-time determining method, is usually by fin pipe surface
Temp probe detects finned tube surface temperature, and when finned tube surface temperature is less than design temperature, timer starts timing, when
When duration reaches the setting time for needing defrosting, heat-pump apparatus enter defrosting state.
It is exactly to start frosting not represented because fin surface temperature is low, under low State of Air Temperature or relatively low in humidity ratio
Area, this conventional defrosting control method False Rate can be very high, it may occur that many meaningless defrosting actions, when having wasted
Between, waste energy.
The content of the invention
The present invention solves the technical problem of a kind of air source heat pump defrosting control method is provided, changed using heat energy
Determining method, is to judge finned tube exchanger or micro-channel heat exchanger by detecting the change of actual air source heat pump quantity of heat production
Frosting state：In the case where environment temperature is not changed in, if without frosting, the quantity of heat production of air source heat pump is maintained at one
Plant relatively steady state；If frosting is more and more, the quantity of heat production of air source heat pump will be fewer and feweri, and this is as judgement
The no important evidence for needing to defrost, this defrosting control method defrosting judgement rate is accurate, many meaningless defrostings will not occur and move
Make, saved time and energy.
In order to solve the above technical problems, one aspect of the present invention is：Removed there is provided a kind of air source heat pump
White control method, described air source heat pump includes compressor, heat source side heat exchanger, user side heat exchanger, controller and timing
Device, inlet and liquid outlet are provided with described user side heat exchanger, the heating equipment for connecting user side, and described removes
White control method specifically includes following steps：
A, the connection pipe surface of heat source side heat exchanger is provided with the first temp probe, the inlet in user side heat exchanger
Second temperature probe, liquid outlet setting the 3rd temp probe and meeting in heat source side heat exchanger in user side heat exchanger are set
4th temp probe is set on wind face, during compressor operating, popped one's head in by the first temp probe of controller collection, second temperature,
The temperature of the 3rd temp probe and the 4th temp probe is respectively T1, T2, T3 and T4；
After b, compressor heating operation, timer starts timing, and recording compressed machine run time is J1, controller collection and
Calculate the real-time temperature approach dT1 of temperature T3 and T2, and the higher temperatures difference dT1 in compressor operating d minutes for the previous period is set
It is set to temperature difference reference point DT；
C, controller collecting temperature T1 and T4, if temperature T4 is less than set environment temperature Tset4, while temperature T1 is less than
During setting frosting temperature Tset1, judge that heat source side heat exchanger possesses frosting condition, into downstream, be otherwise not considered as thermal source
Side heat exchanger frosting, flow is recirculated in this step, resurveys temperature T1 and T4；
D, after being judged as possessing frosting condition, controller contrasts the size of real-time difference dT1 and reference point DT, when real-time
When temperature approach dT1 is continuously less than the product of temperature difference reference point DT and a certain setting percentage b, timer calculates serious heat pamp
J2, if serious heat pamp J2 is more than a minute, and when in the cycle of operation compressor operating time J1 be more than set most short
During run time c, into downstream, otherwise, step c, collecting temperature T1 and T4 are come back to；
E, controller start defrosting operation, meanwhile, timing parameter J1 and the J2 zero of timer；
Whether the parameter that f, last controller combine corresponding defrosting end terminates to judge to defrost, and such as defrosting end is returned
Step a circulate operations.
In a preferred embodiment of the present invention, described temperature T3 is more than temperature T2.
In a preferred embodiment of the present invention, described The shortest operation time c is more than compressor operating d for the previous period,
Serious heat pamp a is less than compressor operating d for the previous period.
The beneficial effects of the invention are as follows：Air source heat pump defrosting control method of the invention, determining method is changed using heat energy,
It is the frosting by detecting the change of actual air source heat pump quantity of heat production to judge finned tube exchanger or micro-channel heat exchanger
State：In the case where environment temperature is not changed in, if without frosting, the quantity of heat production of air source heat pump is maintained at a kind of relative
The state of stabilization；If frosting is more and more, the quantity of heat production of air source heat pump will be fewer and feweri, and this turns into and judges whether needs
The important evidence of defrosting, this defrosting control method defrosting judgement rate is accurate, and many meaningless defrosting actions will not occur, and saves
Time and energy.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be to that will make needed for embodiment description
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing, wherein：
Fig. 1 is the flow chart of a preferred embodiment of air source heat pump defrosting control method of the present invention.
Specific embodiment
The technical scheme in the embodiment of the present invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, this area is common
All other embodiment that technical staff is obtained under the premise of creative work is not made, belongs to the model of present invention protection
Enclose.
As shown in figure 1, the embodiment of the present invention includes：
A kind of air source heat pump defrosting control method, applicable object is heated with water or other heat-conducting liquids as medium
Air source heat pump system, described air source heat pump includes compressor, heat source side heat exchanger, user side heat exchanger, controller
And timer, inlet and liquid outlet are provided with described user side heat exchanger, the heating equipment for connecting user side, institute
The defrosting control method stated specifically includes following steps：
A, the connection pipe surface of heat source side heat exchanger is provided with the first temp probe, the inlet in user side heat exchanger
Second temperature probe, liquid outlet setting the 3rd temp probe and meeting in heat source side heat exchanger in user side heat exchanger are set
4th temp probe is set on wind face, during compressor operating, popped one's head in by the first temp probe of controller collection, second temperature,
The temperature of the 3rd temp probe and the 4th temp probe is respectively T1, T2, T3 and T4；
After b, compressor heating operation, timer starts timing, and recording compressed machine run time is J1, controller collection and
Calculate the real-time temperature approach dT1 of temperature T3 and T2, and the higher temperatures difference dT1 in compressor operating d minutes for the previous period is set
It is set to temperature difference reference point DT；
C, controller collecting temperature T1 and T4, if temperature T4 is less than set environment temperature Tset4, while temperature T1 is less than
During setting frosting temperature Tset1, judge that heat source side heat exchanger possesses frosting condition, into downstream, be otherwise not considered as thermal source
Side heat exchanger frosting, flow is recirculated in this step, resurveys temperature T1 and T4；
D, after being judged as possessing frosting condition, controller contrasts the size of real-time difference dT1 and reference point DT, when real-time
When temperature approach dT1 is continuously less than the product of temperature difference reference point DT and a certain setting percentage b, timer calculates serious heat pamp
J2, if serious heat pamp J2 is more than a minute, and when in the cycle of operation compressor operating time J1 be more than set most short
During run time c, into downstream, otherwise, step c, collecting temperature T1 and T4 are come back to；
E, controller start defrosting operation, meanwhile, timing parameter J1 and the J2 zero of timer；
Whether the parameter that f, last controller combine corresponding defrosting end terminates to judge to defrost, and such as defrosting end is returned
Step a circulate operations.
In above-mentioned, described temperature T3 is more than temperature T2；When described The shortest operation time c is more than compressor operating leading portion
Between d, serious heat pamp a is less than compressor operating d for the previous period.
In sum, air source heat pump defrosting control method of the invention, determining method is changed using heat energy, is by detection
The change of actual air source heat pump quantity of heat production judges the frosting state of finned tube exchanger or micro-channel heat exchanger：In environment
In the case that temperature is not changed in, if without frosting, the quantity of heat production of air source heat pump is maintained at a kind of relatively steady state；
If frosting is more and more, the quantity of heat production of air source heat pump will be fewer and feweri, and this turns into and judges whether to need the important of defrosting
Foundation, this defrosting control method defrosting judgement rate is accurate, and many meaningless defrosting actions will not occur, and has saved time and energy
Amount.
Embodiments of the invention are the foregoing is only, the scope of the claims of the invention is not thereby limited, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright description is made, or directly or indirectly it is used in other related technology necks
Domain, is included within the scope of the present invention.
Claims (3)
1. a kind of air source heat pump defrosting control method, described air source heat pump includes compressor, heat source side heat exchanger, user
Side heat exchanger, controller and timer, are provided with inlet and liquid outlet, for connecting user on described user side heat exchanger
The heating equipment of side, it is characterised in that described defrosting control method specifically includes following steps：
A, heat source side heat exchanger connection pipe surface be provided with the first temp probe, user side heat exchanger inlet set
Second temperature probe, liquid outlet setting the 3rd temp probe and the windward side in heat source side heat exchanger in user side heat exchanger
The 4th temp probe of upper setting, during compressor operating, the first temp probe, second temperature probe, the 3rd gathered by controller
The temperature of temp probe and the 4th temp probe is respectively T1, T2, T3 and T4；
After b, compressor heating operation, timer starts timing, and recording compressed machine run time is J1, controller collection and calculating
The real-time temperature approach dT1 of temperature T3 and T2, and the higher temperatures difference dT1 in compressor operating d minutes for the previous period is set to
Temperature difference reference point DT；
C, controller collecting temperature T1 and T4, if temperature T4 is less than set environment temperature Tset4, while temperature T1 is less than setting
During frosting temperature Tset1, judge that heat source side heat exchanger possesses frosting condition, into downstream, be otherwise not considered as that heat source side is changed
Hot device frosting, flow is recirculated in this step, resurveys temperature T1 and T4；
D, after being judged as possessing frosting condition, controller contrasts the size of real-time difference dT1 and reference point DT, when the real-time temperature difference
When value dT1 is continuously less than the product of temperature difference reference point DT and a certain setting percentage b, timer calculates serious heat pamp J2,
If serious heat pamp J2 was more than a minutes, and when most short fortune of the compressor operating time J1 more than setting in the cycle of operation
During row time c, into downstream, otherwise, step c, collecting temperature T1 and T4 are come back to；
E, controller start defrosting operation, meanwhile, timing parameter J1 and the J2 zero of timer；
Whether the parameter that f, last controller combine corresponding defrosting end terminates to judge to defrost, and such as defrosting end returns step
A circulate operations.
2. air source heat pump defrosting control method according to claim 1, it is characterised in that described temperature T3 is more than temperature
Degree T2.
3. air source heat pump defrosting control method according to claim 1, it is characterised in that described The shortest operation time
C is more than compressor operating d for the previous period, serious heat pamp a and is less than compressor operating d for the previous period.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510019871.2A CN104567163B (en) | 2015-01-15 | 2015-01-15 | Air source heat pump defrosting control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510019871.2A CN104567163B (en) | 2015-01-15 | 2015-01-15 | Air source heat pump defrosting control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104567163A CN104567163A (en) | 2015-04-29 |
| CN104567163B true CN104567163B (en) | 2017-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510019871.2A Active CN104567163B (en) | 2015-01-15 | 2015-01-15 | Air source heat pump defrosting control method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113483510B (en) * | 2021-07-20 | 2022-11-08 | 贵州省建筑设计研究院有限责任公司 | Defrosting start-stop control method for air source heat pump |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004093020A (en) * | 2002-08-30 | 2004-03-25 | Chofu Seisakusho Co Ltd | Defrosting operation control method for heat pump air conditioner |
| CN1235009C (en) * | 2002-12-16 | 2006-01-04 | 珠海格力电器股份有限公司 | Defrosting control method for heat pump type air conditioner |
| CN101749906A (en) * | 2008-12-22 | 2010-06-23 | 同方人工环境有限公司 | Defrosting control method applicable to air-cooling heat pump unit |
| CN102022872B (en) * | 2010-12-03 | 2011-12-07 | 劳特斯空调(江苏)有限公司 | Defrosting control method for intelligent air cooling heat pump |
| CN102519186B (en) * | 2011-12-21 | 2014-08-06 | 青岛海尔空调电子有限公司 | Defrosting method of air conditioner air-cooled heat pump unit and air conditioner air-cooled heat pump unit |
| CN102645064A (en) * | 2012-05-24 | 2012-08-22 | 钟学斌 | Defrosting method and device of air source heat pump set |
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| CN104567163A (en) | 2015-04-29 |
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Effective date of registration: 20191126 Address after: High tech Zone Suzhou city Jiangsu province 215000 Chuk Yuen Road No. 209 Patentee after: SUZHOU HEAT CUBIC NEW ENERGY CO.,LTD. Address before: 215000 Xin Xin Garden, Suzhou Avenue, Suzhou Industrial Park, Jiangsu 39-102, China Patentee before: Chen Zhiqiang |
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Effective date of registration: 20220621 Address after: 210000 No.3 Puzhu South Road, Jiangbei new district, Nanjing City, Jiangsu Province Patentee after: NANJING WANTONG TECHNOLOGY Co.,Ltd. Address before: 215000 Bamboo Garden Road, Suzhou high tech Zone, Jiangsu Province, No. 209 Patentee before: SUZHOU HEAT CUBIC NEW ENERGY CO.,LTD. |
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| TR01 | Transfer of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A defrosting control method for air source heat pumps Granted publication date: 20170524 Pledgee: Nanjing Bank Co.,Ltd. Nanjing Financial City Branch Pledgor: NANJING WANTONG TECHNOLOGY Co.,Ltd. Registration number: Y2024980011086 |