CN109297138A - Defrosting judgment method and device - Google Patents
Defrosting judgment method and device Download PDFInfo
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- CN109297138A CN109297138A CN201811068950.2A CN201811068950A CN109297138A CN 109297138 A CN109297138 A CN 109297138A CN 201811068950 A CN201811068950 A CN 201811068950A CN 109297138 A CN109297138 A CN 109297138A
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- 238000010257 thawing Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 42
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- 230000005055 memory storage Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 3
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- 239000003507 refrigerant Substances 0.000 description 4
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Classifications
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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
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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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
- F24F11/62—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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
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- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a defrosting judgment method and device, relates to the field of air conditioners, and is used for judging whether the air conditioner needs to be subjected to defrosting operation. The method comprises the following steps: collecting a first temperature value T1 of the outdoor unit coil pipe after the air conditioner operates for a first preset time, and continuously collecting a second temperature value T2 of the outdoor unit coil pipe after a second preset time; s2, judging whether the second temperature value T2 is smaller than or equal to the difference value between the first temperature value T1 and a preset temperature threshold Tk; and S3, if the second temperature value T2 is less than or equal to the difference value between the first temperature value T1 and a preset temperature threshold Tk, controlling the air conditioner to operate defrosting operation, if the second temperature value T2 is greater than the difference value between the first temperature value T1 and the preset temperature threshold Tk, acquiring a second temperature value T2 of the outdoor unit coil after third preset time, and executing the step S2 again. The embodiment of the invention is applied to defrosting detection of the air conditioner.
Description
Technical field
The present invention relates to air conditioner technical field more particularly to a kind of defrosting judgment method and devices.
Background technique
The principle that air conditioner runs heating mode is to be located outside low temperature and low pressure liquid refrigerant in machine heat exchanger to pass through heat exchange
Device tube wall, fin absorb heat as gas, by becoming high temperature and high pressure gas after compressor sucking compression, to room from air
Interior heat release becomes highly pressurised liquid, then becomes low temperature and low pressure liquid inflow heat exchanger by reducing pressure by regulating flow, carries out next circulation.
The premise that refrigerant absorbs heat from air is that refrigerant temperature is needed lower than air themperature, and at this moment the vapor in air may
Condensing out becomes frost layer, is attached to the tube wall of heat exchanger, on fin.And the presence of frost layer, changing for air and refrigerant will be deteriorated
Therefore heat when frost layer runs up to certain thickness, needs relevant decision condition to defrost.
However defrosting judgment method in the prior art, it generallys use and calculates outdoor environment temperature and outdoor unit coil pipe temperature
The mode of difference between degree, using two kinds of temperature values, then wherein the sampling of any one middle temperature value deviates, and all will affect most
The judgement of termination fruit, and the sensor for detecting outdoor environment temperature, due to being under external environment for a long time, it is easy to generate
Measurement error.
Summary of the invention
The embodiment of the present invention provides a kind of defrosting judgment method and device, judges in the prior art defrosting for solving
The big technical problem of error.
To achieve the purpose that solve above-mentioned technical problem, the embodiment of the present invention is adopted the following technical scheme that
In a first aspect, the embodiment provides a kind of defrosting judgment methods, this method comprises:
S1, the air conditioner run the first preset time after, acquire the first temperature value T1 of the outdoor unit coil pipe,
After second preset time, continue the second temperature value T2 for acquiring the outdoor unit coil pipe；
S2, judge the second temperature value T2 whether be less than or equal to the first temperature value T1 and preset temperature threshold Tk it
Between difference；
If S3, the second temperature value T2 are less than or equal between the first temperature value T1 and preset temperature threshold Tk
Difference then controls air conditioner operation defrosting operation, if the second temperature value T2 be greater than the first temperature value T1 with
Difference between preset temperature threshold Tk acquires the second temperature value T2 of the outdoor unit coil pipe then after third preset time,
And it re-execute the steps S2.
Second aspect, the embodiment provides a kind of defrosting judgment means, which includes:
Acquisition unit, for acquiring the first of the outdoor unit coil pipe after the air conditioner runs the first preset time
Temperature value T1；
The acquisition unit is also used to after the second preset time, acquires the second temperature value T2 of the outdoor unit coil pipe；
Judging unit, for judging whether the second temperature value T2 is less than or equal to the first temperature value T1 and default temperature
Spend the difference between threshold value Tk；
Defrost unit, if being less than or equal to the first temperature value T1 and preset temperature threshold for the second temperature value T2
Difference between value Tk then controls the air conditioner operation defrosting operation；
The acquisition unit, if being also used to the second temperature value T2 greater than the first temperature value T1 and preset temperature
Difference between threshold value Tk acquires the second temperature value T2 of the outdoor unit coil pipe then after third preset time, and transports again
The row judging unit.
The third aspect, provides a kind of computer readable storage medium for storing one or more programs, it is one or
Multiple programs include instruction, and described instruction makes the defrosting of the computer execution as described in relation to the first aspect when executed by a computer
Judgment method.
Fourth aspect provides a kind of computer program product comprising instruction, when described instruction is run on computers
When, so that computer executes defrosting judgment method as described in relation to the first aspect.
5th aspect, provides a kind of defrosting judgment means, comprising: and processor and memory, memory are used to store program,
Processor calls the program of memory storage, to execute defrosting judgment method described in above-mentioned first aspect.
The embodiment of the present invention provides a kind of defrosting judgment method and device, before detection outdoor unit coil temperature value
After change, calculate changing value whether be more than preset threshold value, to whether be needed to carry out defrosting operation.Use a temperature
Sensor is judged, while reducing production cost, judging result can also be made more accurate.
Detailed description of the invention
Fig. 1 is a kind of defrosting judgment method flow diagram one that the embodiment of the present invention provides；
Fig. 2 is a kind of defrosting judgment method flow diagram two that the embodiment of the present invention provides；
Fig. 3 is a kind of defrosting judgment method flow diagram three that the embodiment of the present invention provides；
Fig. 4 is a kind of defrosting judgment means schematic diagram that the embodiment of the present invention provides.
Specific embodiment
With reference to the accompanying drawing, the embodiment of the present invention is described.
Referring to fig. 1, the embodiment of the invention provides a kind of defrosting judgment method, the method comprising the steps of S1-S3:
S1, the air conditioner run the first preset time after, the first temperature value T1 of the outdoor unit coil pipe is acquired, second
After preset time, continue the second temperature value T2 for acquiring the outdoor unit coil pipe.
After air conditioner runs a period of time, it is in metastable state, the temperature value of outdoor unit coil pipe has also risen to one
Definite value, when frosting situation occurs for heat exchanger, with the thickening of frost layer, the heat transfer effect of heat exchanger and air will gradually be deteriorated, and lead
It causes outdoor unit coil temperature to be gradually reduced, therefore after air conditioner the first preset time of operation, becomes in the temperature value of outdoor unit coil pipe
In stabilization, and during not yet frosting occurs for heat exchanger, the first temperature value T1 of the outdoor unit coil pipe is acquired.
When having acquired the second preset time after the first temperature value T1, start the second temperature for acquiring the outdoor unit coil pipe
Value T2.And need the second temperature value T2 of the continuous collecting outdoor unit coil pipe in the 5th preset time.
S2, judge whether second temperature value T2 is less than or equal between the first temperature value T1 and preset temperature threshold Tk
Difference.
The difference between the first temperature value T1 and preset temperature threshold Tk is calculated, and is acquired in the 5th preset time
To multiple second temperature value T2 make comparisons, judge whether second temperature value T2 is less than or equal to the first temperature value T1 and default temperature
Spend the difference between threshold value Tk.
If S3, the second temperature value T2 are less than or equal to the difference between the first temperature value T1 and preset temperature threshold Tk
Value then controls air conditioner operation defrosting operation, if the second temperature value T2 is greater than the first temperature value T1 and preset temperature
Difference between threshold value Tk acquires the second temperature value T2 of the outdoor unit coil pipe then after third preset time, and re-executes
Step S2.
If in the 5th preset time, the second temperature value T2 of collected outdoor unit coil pipe be both less than equal to this first
Difference between temperature value T1 and preset temperature threshold Tk then indicates that heat exchanger has occurred and that frosting situation, the temperature of outdoor unit coil pipe
Degree can be gradually reduced, and frost layer also can be increasingly thicker, and air conditioner operation defrosting operation need to be immediately controlled.
If the second temperature value T2 of collected outdoor unit coil pipe is both greater than or component values in the 5th preset time
Then indicate that frosting not yet occurs for heat exchanger or in i.e. greater than the difference between the first temperature value T1 and preset temperature threshold Tk
By the state of frosting.Therefore after third preset time, the second temperature value T2 of the outdoor unit coil pipe is resurveyed, and hold again
Row step S2 carries out repeating judgement.
Optionally, with reference to Fig. 2, which includes step S21-S23:
S21, temperature averages are obtained in the 4th preset time of outdoor unit coil pipe as the first temperature value T1 and outside collection room
The second temperature value T2 of machine coil pipe.
After air conditioner runs the first preset time, the first temperature value T1 of outdoor unit coil pipe is acquired.In order to avoid acquisition
During first temperature value T1, the mutation or fluctuation of temperature value in turn result in the inaccuracy of acquisition numerical value, in air conditioner operation the
In the 4th preset time after one preset time, the temperature value of continuous collecting outdoor unit coil pipe.The first temperature value T1 is equal to
The average value of the collected outdoor unit coil temperature value in 4th preset time, and the 4th preset time no more than this second
Preset time.After the second preset time, the second temperature value T2 of the outdoor unit coil pipe is acquired.
S22, judge whether second temperature value T2 is less than or equal between the first temperature value T1 and preset temperature threshold Tk
Difference.
If S23, the second temperature value T2 are less than or equal to the difference between the first temperature value T1 and preset temperature threshold Tk
Value then controls air conditioner operation defrosting operation, if the second temperature value T2 is greater than the first temperature value T1 and preset temperature
Difference between threshold value Tk acquires the second temperature value T2 of the outdoor unit coil pipe then after third preset time, and re-executes
Step S22.
Preferably, with reference to Fig. 3, which further includes step S31-S33:
S31, the intermediate value of temperature in the 4th preset time of outdoor unit coil pipe is obtained as the first temperature value T1 and outside collection room
The second temperature value T2 of machine coil pipe.
After air conditioner runs the first preset time, the first temperature value T1 of outdoor unit coil pipe is acquired.If in collection room
During the temperature value of outer machine coil pipe, the Sudden Changing Rate of temperature value is excessive or fluctuation is asymmetric, still will appear deviation using average value.
Therefore in the 4th preset time after air conditioner runs the first preset time, the temperature value of continuous collecting outdoor unit coil pipe.It should
First temperature value T1 is equal to the median of the collected outdoor unit coil temperature value.After the second preset time, the room is acquired
The second temperature value T2 of outer machine coil pipe.
S32, judge whether second temperature value T2 is less than or equal between the first temperature value T1 and preset temperature threshold Tk
Difference.
If S33, the second temperature value T2 are less than or equal to the difference between the first temperature value T1 and preset temperature threshold Tk
Value then controls air conditioner operation defrosting operation, if the second temperature value T2 is greater than the first temperature value T1 and preset temperature
Difference between threshold value Tk acquires the second temperature value T2 of the outdoor unit coil pipe then after third preset time, and re-executes
Step S32.
The embodiment of the present invention provides a kind of defrosting judgment method and device, before detection outdoor unit coil temperature value
After change, calculate changing value whether be more than preset threshold value, to whether be needed to carry out defrosting operation.Use a temperature
Sensor is judged, while reducing production cost, judging result can also be made more accurate.
Refering to what is shown in Fig. 4, can be applied to as shown above the embodiment provides a kind of defrosting judgment means
Defrost judgment method.The defrosting judgment means 123 include:
Acquisition unit 100, for acquiring the first temperature value of outdoor unit coil pipe after air conditioner runs the first preset time
T1。
Optionally, which is equal to after the air conditioner runs the first preset time and adopts in the 4th preset time
The average value of the outdoor unit coil temperature collected, the 4th preset time are not more than second preset time.
Preferably, which is equal to after the air conditioner runs the first preset time and adopts in the 4th preset time
The median of the outdoor unit coil temperature collected.
The acquisition unit 100, is also used to after the second preset time, acquires the second temperature value T2 of the outdoor unit coil pipe.
Optionally, which acquires the second temperature value T2 of the outdoor unit coil pipe after the second preset time
When, it is specifically used for the second temperature value T2 of the continuous collecting outdoor unit coil pipe in the 5th preset time.
Judging unit 200, for judging whether second temperature value T2 is less than or equal to the first temperature value T1 and default temperature
Spend the difference between threshold value Tk.
Defrost unit 300, if being less than or equal to the first temperature value T1 and preset temperature threshold for the second temperature value T2
Difference between value Tk then controls air conditioner operation defrosting operation.
The acquisition unit is greater than between the first temperature value T1 and preset temperature threshold Tk if being also used to second temperature value T2
Difference acquire the second temperature value T2 of the outdoor unit coil pipe then after third preset time, and rerun the judging unit
200。
The embodiment of the present invention provides a kind of computer readable storage medium for storing one or more programs, one
Or multiple programs include instruction, described instruction makes computer execute the defrosting as described in Fig. 1-Fig. 3 when executed by a computer
Judgment method.
The embodiment of the present invention provides a kind of computer program product comprising instruction, when instruction is run on computers
When, so that computer executes the defrosting judgment method as described in Fig. 1-Fig. 3.
The embodiment of the present invention provides a kind of defrosting judgment means, comprising: processor and memory, memory is for storing
Program, processor calls the program of memory storage, to execute the defrosting judgment method as described in Fig. 1-Fig. 3.
By defrosting judgment means in an embodiment of the present invention, computer readable storage medium, computer program product
It can be applied to the above method, therefore, can be obtained technical effect see also above method embodiment, the present invention is implemented
Details are not described herein for example.
It should be noted that above-mentioned each unit can be the processor individually set up, also can integrate controller certain
It is realized in one processor, in addition it is also possible to be stored in the form of program code in the memory of controller, by controller
Some processor calls and executes the function of the above each unit.Processor described here can be a central processing unit
(Central Process ing Unit, CPU) or specific integrated circuit (Appl icat ion Specific
Integrated Circuit, ASIC), or be arranged to implement one or more integrated circuits of the embodiment of the present invention.
It should be understood that in various embodiments of the present invention, magnitude of the sequence numbers of the above procedures are not meant to execute suitable
Sequence it is successive, the execution of each process sequence should be determined by its function and internal logic, the implementation without coping with the embodiment of the present invention
Process constitutes any restriction.
Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician
Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed
The scope of the present invention.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In several embodiments provided by the present invention, it should be understood that disclosed system, apparatus and method, it can be with
It realizes by another way.For example, apparatus embodiments described above are merely indicative, for example, the unit
It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components
It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, the indirect coupling of equipment or unit
It closes or communicates to connect, can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.
Claims (11)
1. a kind of defrosting judgment method, which is characterized in that be used for air conditioner, the air conditioner includes outdoor unit coil pipe, described to remove
White judgment method includes:
S1, the air conditioner run the first preset time after, the first temperature value T1 of the outdoor unit coil pipe is acquired, second
After preset time, continue the second temperature value T2 for acquiring the outdoor unit coil pipe；
S2, judge whether the second temperature value T2 is less than or equal between the first temperature value T1 and preset temperature threshold Tk
Difference；
If S3, the second temperature value T2 are less than or equal to the difference between the first temperature value T1 and preset temperature threshold Tk
Value then controls the air conditioner and runs defrosting operation, if the second temperature value T2 is greater than the first temperature value T1 and in advance
If the difference between temperature threshold Tk, then after third preset time, the second temperature value T2 of the outdoor unit coil pipe is acquired, and
It re-execute the steps S2.
2. defrost judgment method according to claim 1, which is characterized in that the first temperature value T1 is equal to the air conditioner
The average value of the collected outdoor unit coil temperature in the 4th preset time after the first preset time is run, the described 4th is default
Time is not more than second preset time.
3. defrost judgment method according to claim 1, which is characterized in that the first temperature value T1 is equal to the air conditioner
Run the median of the collected outdoor unit coil temperature in the 4th preset time after the first preset time.
4. defrost judgment method according to claim 1, which is characterized in that the second temperature of the acquisition outdoor unit coil pipe
Angle value T2, comprising:
In the 5th preset time, the second temperature value T2 of outdoor unit coil pipe described in continuous collecting.
5. a kind of defrosting judgment means, which is characterized in that be used for air conditioner, the air conditioner includes outdoor unit coil pipe, described to remove
White judgment means include:
Acquisition unit, for acquiring the first temperature of the outdoor unit coil pipe after the air conditioner runs the first preset time
Value T1；
The acquisition unit is also used to after the second preset time, acquires the second temperature value T2 of the outdoor unit coil pipe；
Judging unit, for judging whether the second temperature value T2 is less than or equal to the first temperature value T1 and preset temperature threshold
Difference between value Tk；
Defrost unit, if being less than or equal to the first temperature value T1 and preset temperature threshold Tk for the second temperature value T2
Between difference, then control air conditioner operation defrosting operation；
The acquisition unit, if being also used to the second temperature value T2 greater than the first temperature value T1 and preset temperature threshold
Difference between Tk acquires the second temperature value T2 of the outdoor unit coil pipe then after third preset time, and reruns institute
State judging unit.
6. defrost judgment means according to claim 5, which is characterized in that the first temperature value T1 is equal to the air conditioner
The average value of the collected outdoor unit coil temperature in the 4th preset time after the first preset time is run, the described 4th is default
Time is not more than second preset time.
7. defrost judgment means according to claim 5, which is characterized in that the first temperature value T1 is equal to the air conditioner
Run the median of the collected outdoor unit coil temperature in the 4th preset time after the first preset time.
8. defrost judgment means according to claim 5, which is characterized in that the acquisition unit after the second preset time,
Specifically in the 5th preset time, the second temperature value T2 of outdoor unit coil pipe described in continuous collecting.
9. a kind of computer readable storage medium for storing one or more programs, which is characterized in that one or more of journeys
Sequence includes instruction, and it is according to any one of claims 1-4 that described instruction when executed by a computer executes the computer
Defrost judgment method.
10. a kind of computer program product comprising instruction, which is characterized in that when described instruction is run on computers, make
It obtains the computer and executes defrosting judgment method according to any one of claims 1-4.
11. a kind of defrosting judgment means characterized by comprising processor and memory, memory are located for storing program
The program that device calls memory storage is managed, to execute defrosting judgment method according to any one of claims 1-4.
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| CN201811068950.2A CN109297138A (en) | 2018-09-13 | 2018-09-13 | Defrosting judgment method and device |
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| CN201811068950.2A CN109297138A (en) | 2018-09-13 | 2018-09-13 | Defrosting judgment method and device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110006133A (en) * | 2019-04-16 | 2019-07-12 | 宁波奥克斯电气股份有限公司 | A kind of air-conditioner defrosting control method, device and air conditioner |
| CN110243050A (en) * | 2019-06-21 | 2019-09-17 | 宁波奥克斯电气股份有限公司 | A kind of control method, device and air conditioner postponing air conditioner frosting |
| CN110469960A (en) * | 2019-07-24 | 2019-11-19 | 青岛海尔空调器有限总公司 | For the control method of air-conditioner defrosting, device and air-conditioning |
| CN110469961A (en) * | 2019-07-24 | 2019-11-19 | 青岛海尔空调器有限总公司 | For the control method of air-conditioner defrosting, device and air-conditioning |
| CN110469962A (en) * | 2019-07-24 | 2019-11-19 | 青岛海尔空调器有限总公司 | For the control method of air-conditioner defrosting, device and air-conditioning |
| CN110469971A (en) * | 2019-07-25 | 2019-11-19 | 青岛海尔空调器有限总公司 | For the control method of air-conditioner defrosting, device and air-conditioning |
| CN111706957A (en) * | 2020-05-25 | 2020-09-25 | 珠海格力电器股份有限公司 | Method and device for detecting reversing abnormality of four-way valve, storage medium and air conditioner |
| CN114877492A (en) * | 2022-04-29 | 2022-08-09 | 浙江中广电器集团股份有限公司 | Heat pump and defrosting control method thereof |
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Address after: 528303 No. 8, Rong Gang Road, Ronggui street, Shunde District, Foshan, Guangdong. Applicant after: HISENSE HOME APPLIANCE GROUP Co.,Ltd. Applicant after: Hisense (Guangdong) Air Conditioning Co., Ltd. Address before: 528303 No. 8, Rong Gang Road, Ronggui street, Shunde District, Foshan, Guangdong. Applicant before: Hisense Kelon Electrical Holdings Co.,Ltd. Applicant before: Hisense (Guangdong) Air Conditioning Co., Ltd. |
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Application publication date: 20190201 |