CN104457064B - Sliding defrosting control method and system - Google Patents
Sliding defrosting control method and system Download PDFInfo
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- CN104457064B CN104457064B CN201410681767.5A CN201410681767A CN104457064B CN 104457064 B CN104457064 B CN 104457064B CN 201410681767 A CN201410681767 A CN 201410681767A CN 104457064 B CN104457064 B CN 104457064B
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- defrosting
- sliding
- value
- pressure
- environment temperature
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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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
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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
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Defrosting Systems (AREA)
Abstract
The invention discloses a sliding defrosting control method and system. The method comprises the steps that whether conditions for starting sliding defrosting are met or not is judged according to an actual environment temperature value; after the conditions for starting sliding defrosting are met, a machine set is controlled for defrosting according to a comparison result between a compensated defrosting pressure value obtained through calculation and the actual pressure value of the system. The system comprises a condition detection module and a defrosting control module. According to the sliding defrosting control method and system, defrosting is conducted in a sliding mode, therefore, the machine set can conduct defrosting at the proper time, the phenomenon that the machine set conducts defrosting when no or little frost exists is effectively avoided, and therefore efficient operation of the system and stable water temperature are guaranteed. A pressure sensor is adopted to detect the pressure of the system and the pressure sensor detects the evaporation pressure of the system, so that the actual operation condition of refrigerating fluid can be reflected factually, the detection accuracy is improved, and the judgment accuracy of a controller is guaranteed. The sliding defrosting control method and system can be widely applied to the field of defrosting.
Description
Technical field
The present invention relates to defrosting control technology field, more particularly, to a kind of sliding defrosting control method and system.
Background technology
The Defrost mode of heat pump was when temperature sensor detects system coil temperature less than or equal to -7 DEG C in the past, standby
Group is reruned and is defrosted after certain defrosting cycle.Such Defrost mode is suitable only for 0 DEG C of environment above temperature defrosting, such as
Fruit ambient temperature below 0 DEG C occurs problems with using the method defrosting：
1. generally, ambient temperature is in less than 0 DEG C, its coil temperature must≤- 7 DEG C, such unit one is started shooting
Will be defrosted after running certain defrosting cycle, thus leading to unit frostless defrosting, or frosting is few at once
When defrosting so that units consumption increases, water temperature is affected, and users'comfort reduces.
2. one of condition coil temperature being defrosted as judgement, because it adopts detection, tool temperature passes
Sensor concordance is by force it is easy to lead to error in judgement.
Content of the invention
In order to solve above-mentioned technical problem, it is an object of the invention to provide a kind of detection accuracy that improves is it is ensured that system is high
A kind of sliding defrosting control method and system that effect is run.
The technical solution adopted in the present invention is：
A kind of sliding defrosting control method, comprises the following steps：
A, according to actual environment temperature value, judge whether to meet the condition starting sliding defrosting；
B, when meet start sliding defrosting condition after, according to defrosting pressure value and actual evaporation pressure value after the compensation calculating
Comparison result, and then control unit defrosted.
As a kind of improvement further of described sliding defrosting control method, described step A includes：
A1, from environment temperature sensor, actual environment temperature value is acquired in real time；
A2, judge that whether actual environment temperature value is less than set temperature value, if so, then start sliding defrosting mode, execution
Step B；Conversely, then returning execution step A1.
As a kind of improvement further of described sliding defrosting control method, described step B includes：
B1, according to actual environment temperature value and compensation relationship formula, calculate the pressure value that defrosts after compensation；
B2, from pressure transducer Real-time Collection actual evaporation pressure value and fed back；
B3, judge that actual evaporation pressure value, whether less than or equal to the pressure value that defrosts after compensating, if so, then controls unit operation
Defrosted after certain defrosting cycle；Conversely, then returning execution step B2.
As a kind of improvement further of described sliding defrosting control method, described compensation relationship formula is：DX=D1-
（D2/D3）*（T1-T）,
Wherein, DX represents defrosting pressure value after compensation, and D1 represents defrosting pressure value before default compensation, and D2 represents default
Defrosting pressure divergence value, D3 represents default external temperature deviation, and T1 represents set temperature value, and T represents actual environment temperature
Value.
Another technical scheme of the present invention is：
A kind of sliding defrosting control system, including：
Condition detection module, for according to actual environment temperature value, judging whether to meet the condition starting sliding defrosting；
Defrosting control module, for after meeting startup sliding defrosting condition, according to the pressure value that defrosts after the compensation calculating
With the comparison result of actual evaporation pressure value, and then control unit defrosted.
The improvement further of the control system that defrosts as a kind of described sliding, described condition detection module includes：
Temperature collect module, for being acquired to actual environment temperature value from environment temperature sensor in real time；
Temperature judge module, for judging whether actual environment temperature value is less than set temperature value, if so, then starts sliding
Defrosting mode, execution defrosting control module；Conversely, then returning execution temperature collect module.
The improvement further of the control system that defrosts as a kind of described sliding, described defrosting control module includes：
Calculation of pressure module, for according to actual environment temperature value and compensation relationship formula, calculating defrosting after compensation
Pressure value；
Pressure acquisition module, for from pressure transducer Real-time Collection actual evaporation pressure value and fed back；
Pressure judge module, for judging whether actual evaporation pressure value is less than or equal to defrosting pressure value after compensation, if so,
Defrosted after then controlling the certain defrosting cycle of unit operation；Conversely, then returning execution pressure acquisition module.
The invention has the beneficial effects as follows：
The present invention a kind of sliding defrosting control method and system is defrosted by way of being defrosted using sliding so that unit energy
Enough defrosted when appropriate, be prevented effectively from unit and the phenomenon appearance that frostless and few frost just removes occur, thus being effectively ensured
The Effec-tive Function of system and water temperature stability.And the present invention adopts pressure transducer detecting system pressure, because pressure transducer
Detection is system evaporating pressure, can truly reflecting that cold-producing medium is actual and carry out situation, improving accuracy in detection it is ensured that controlling
The accuracy that device judges.
Brief description
Below in conjunction with the accompanying drawings the specific embodiment of the present invention is described further：
Fig. 1 is a kind of flow chart of steps of present invention sliding defrosting control method；
Fig. 2 is a kind of flow chart of steps of present invention sliding defrosting control method step A；
Fig. 3 is a kind of flow chart of steps of present invention sliding defrosting control method step B；
Fig. 4 is a kind of block diagram of sliding of present invention defrosting control system.
Specific embodiment
With reference to Fig. 1, a kind of present invention sliding defrosting control method, comprise the following steps：
A, according to actual environment temperature value, judge whether to meet the condition starting sliding defrosting；
B, when meet start sliding defrosting condition after, according to defrosting pressure value and actual evaporation pressure value after the compensation calculating
Comparison result, and then control unit defrosted.
With reference to Fig. 2, as a kind of improvement further of described sliding defrosting control method, described step A includes：
A1, from environment temperature sensor, actual environment temperature value is acquired in real time；
A2, judge that whether actual environment temperature value is less than set temperature value, if so, then start sliding defrosting mode, execution
Step B；Conversely, then returning execution step A1.
With reference to Fig. 3, as a kind of improvement further of described sliding defrosting control method, described step B includes：
B1, according to actual environment temperature value and compensation relationship formula, calculate the pressure value that defrosts after compensation；
B2, from pressure transducer Real-time Collection actual evaporation pressure value and fed back；
B3, judge that actual evaporation pressure value, whether less than or equal to the pressure value that defrosts after compensating, if so, then controls unit operation
Defrosted after certain defrosting cycle；Conversely, then returning execution step B2.
As a kind of improvement further of described sliding defrosting control method, described compensation relationship formula is：DX=D1-
（D2/D3）*（T1-T）,
Wherein, DX represents defrosting pressure value after compensation, and D1 represents defrosting pressure value before default compensation, and D2 represents default
Defrosting pressure divergence value, D3 represents default external temperature deviation, and T1 represents set temperature value, and T represents actual environment temperature
Value, default compensate before defrosting pressure value D1, default defrosting pressure divergence value D2, default external temperature deviation D3 and set
Constant temperature angle value T1 is all quantitation out according to experimental verification.
Reference Fig. 4, a kind of sliding of present invention defrosting control system, including：
Condition detection module, for according to actual environment temperature value, judging whether to meet the condition starting sliding defrosting；
Defrosting control module, for after meeting startup sliding defrosting condition, according to the pressure value that defrosts after the compensation calculating
With the comparison result of actual evaporation pressure value, and then control unit defrosted.
The improvement further of the control system that defrosts as a kind of described sliding, described condition detection module includes：
Temperature collect module, for being acquired to actual environment temperature value from environment temperature sensor in real time；
Temperature judge module, for judging whether actual environment temperature value is less than set temperature value, if so, then starts sliding
Defrosting mode, execution defrosting control module；Conversely, then returning execution temperature collect module.
The improvement further of the control system that defrosts as a kind of described sliding, described defrosting control module includes：
Calculation of pressure module, for according to actual environment temperature value and compensation relationship formula, calculating defrosting after compensation
Pressure value；
Pressure acquisition module, for from pressure transducer Real-time Collection actual evaporation pressure value and fed back；
Pressure judge module, for judging whether actual evaporation pressure value is less than or equal to defrosting pressure value after compensation, if so,
Defrosted after then controlling the certain defrosting cycle of unit operation；Conversely, then returning execution pressure acquisition module.
The specific embodiment of the present invention is as follows：
S1, from environment temperature sensor, actual environment temperature value T is acquired in real time；
S2, judge that whether actual environment temperature value T is less than set temperature value T1, if so, then start sliding defrosting mode, hold
Row step S3；Conversely, then returning execution step S1；
S3, according to actual environment temperature value T and compensation relationship formula DX=D1-（D2/D3）*（T1-T）, calculate compensation
Defrost pressure value DX afterwards；
S4, from pressure transducer Real-time Collection actual evaporation pressure value and fed back；
S5, judge that actual evaporation pressure value, whether less than or equal to the pressure value that defrosts after compensating, if so, then controls unit operation
Defrosted after certain defrosting cycle；Conversely, then returning execution step S4.
It is more than that the preferable enforcement to the present invention is illustrated, but the invention is not limited to described enforcement
Example, those of ordinary skill in the art also can make a variety of equivalent variations without prejudice on the premise of present invention spirit or replace
Change, these equivalent deformation or replacement are all contained in the application claim limited range.
Claims (5)
1. a kind of sliding defrosting control method it is characterised in that：Comprise the following steps：
A, according to actual environment temperature value, judge whether to meet the condition starting sliding defrosting；
B, when meet start sliding defrosting condition after, according to calculate compensation after defrosting pressure value and actual evaporation pressure value ratio
To result, and then unit is controlled to be defrosted；
Described step B includes：
B1, according to actual environment temperature value and compensation relationship formula, calculate the pressure value that defrosts after compensation；
B2, from pressure transducer Real-time Collection actual evaporation pressure value and fed back；
B3, judge that actual evaporation pressure value, whether less than or equal to the pressure value that defrosts after compensating, if so, then controls unit operation certain
Defrosted after defrosting cycle；Conversely, then returning execution step B2.
2. a kind of sliding defrosting control method according to claim 1 it is characterised in that：Described step A includes：
A1, from environment temperature sensor, actual environment temperature value is acquired in real time；
A2, judge that whether actual environment temperature value is less than set temperature value, if so, then start sliding defrosting mode, execution step
B；Conversely, then returning execution step A1.
3. a kind of sliding defrosting control method according to claim 1 it is characterised in that：Described compensation relationship formula is：
DX=D1-（D2/D3）*（T1-T）,
Wherein, DX represents defrosting pressure value after compensation, and D1 represents defrosting pressure value before default compensation, and D2 represents default defrosting
Pressure divergence value, D3 represents default external temperature deviation, and T1 represents set temperature value, and T represents actual environment temperature value.
4. a kind of sliding defrosting control system is it is characterised in that include：
Condition detection module, for according to actual environment temperature value, judging whether to meet the condition starting sliding defrosting；
Defrosting control module, for after meeting startup sliding defrosting condition, according to defrosting pressure value and reality after the compensation calculating
The comparison result of border vapor pres- sure force value, and then control unit to be defrosted；
Described defrosting control module includes：
Calculation of pressure module, for according to actual environment temperature value and compensation relationship formula, calculating defrosting pressure after compensation
Value；
Pressure acquisition module, for from pressure transducer Real-time Collection actual evaporation pressure value and fed back；
Pressure judge module, for judging whether actual evaporation pressure value is less than or equal to defrosting pressure value after compensation, if so, then controls
Defrosted after the certain defrosting cycle of unit operation processed；Conversely, then returning execution pressure acquisition module.
5. a kind of sliding defrosting control system according to claim 4 it is characterised in that：Described condition detection module bag
Include：
Temperature collect module, for being acquired to actual environment temperature value from environment temperature sensor in real time；
Temperature judge module, for judging whether actual environment temperature value is less than set temperature value, if so, then starts sliding defrosting
Pattern, execution defrosting control module；Conversely, then returning execution temperature collect module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410681767.5A CN104457064B (en) | 2014-11-21 | 2014-11-21 | Sliding defrosting control method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410681767.5A CN104457064B (en) | 2014-11-21 | 2014-11-21 | Sliding defrosting control method and system |
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| Publication Number | Publication Date |
|---|---|
| CN104457064A CN104457064A (en) | 2015-03-25 |
| CN104457064B true CN104457064B (en) | 2017-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410681767.5A Active CN104457064B (en) | 2014-11-21 | 2014-11-21 | Sliding defrosting control method and system |
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| CN (1) | CN104457064B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106524412A (en) * | 2016-11-09 | 2017-03-22 | 重庆美的通用制冷设备有限公司 | Air conditioning unit defrosting controlling method and device and air conditioner |
| CN109668356B (en) * | 2018-12-18 | 2021-01-19 | 广东芬尼克兹节能设备有限公司 | Defrosting control method and system of heat pump unit |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050105029A (en) * | 2004-04-30 | 2005-11-03 | 엘지전자 주식회사 | Defrosting driving method for air conditioner |
| KR101470538B1 (en) * | 2007-12-21 | 2014-12-09 | 엘지전자 주식회사 | control method of Air conditioner |
| CN201412993Y (en) * | 2009-06-16 | 2010-02-24 | 泰豪科技股份有限公司 | Device for controlling defrosting by pressure difference controller |
| CN102519190B (en) * | 2011-12-31 | 2014-06-18 | 青岛海尔空调电子有限公司 | Air cooling unit defrosting control method and system |
| DE102012109198B4 (en) * | 2012-09-27 | 2020-03-26 | ait-deutschland GmbH | Process for controlling the defrosting of a refrigerant evaporator |
| CN103836857B (en) * | 2012-11-26 | 2018-06-05 | 浙江盾安人工环境股份有限公司 | The Defrost method of air-conditioning |
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| CN104457064A (en) | 2015-03-25 |
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