CN108518815A - The defrosting method of air-conditioning - Google Patents
The defrosting method of air-conditioning Download PDFInfo
- Publication number
- CN108518815A CN108518815A CN201810312241.8A CN201810312241A CN108518815A CN 108518815 A CN108518815 A CN 108518815A CN 201810312241 A CN201810312241 A CN 201810312241A CN 108518815 A CN108518815 A CN 108518815A
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- Prior art keywords
- temperature
- air
- difference
- compressor
- preset time
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Classifications
-
- 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
-
- 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
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
-
- 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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Thermal Sciences (AREA)
- Defrosting Systems (AREA)
Abstract
The present invention relates to air-conditioning technical fields, specifically disclose a kind of defrosting method of air-conditioning, including：S10：The timing since second of startup of compressor, obtains simultaneously first temperature difference of the storage evaporator device in the first preset time；S20：The timing since being again started up compressor obtains simultaneously second temperature difference of the storage evaporator device in the first preset time；S30：Calculate the absolute value of first temperature difference and the difference of second temperature difference；S40：If absolute value is more than or equal to preset difference value, S50 is thened follow the steps；Otherwise, S60 is thened follow the steps；S50：Carry out defrosting operation；The S60 includes repeating S20~S40.The present invention provides a kind of defrosting method of air-conditioning, can effectively judge the opportunity into defrost program, and defrosting operation is carried out to air-conditioning.
Description
Technical field
The present invention relates to air-conditioning technical field more particularly to a kind of defrosting methods of air-conditioning.
Background technology
Usually, air-conditioning can all have evaporator, and the working time of evaporator is long, will be in surface frosting, frosting meeting
The reliability of reduction system not only improves energy consumption, but also damage air-conditioning.Therefore, for the normal operation of air-conditioning, defrost be one very
Part and parcel.
Invention content
It is an object of the present invention to：A kind of defrosting method of air-conditioning is provided, can effectively judge to enter defrost journey
The opportunity of sequence carries out defrosting operation to air-conditioning.
For this purpose, the present invention provides a kind of defrosting method of air-conditioning, including：
S10：Start since compressor second and start timing, obtains first of simultaneously storage evaporator device in the first preset time
The temperature difference；
S20：The timing since being again started up compressor obtains simultaneously second temperature of the storage evaporator device in the first preset time
Difference；
S30：Calculate the absolute value of first temperature difference and the difference of second temperature difference；
S40：If absolute value is more than or equal to preset difference value, S50 is thened follow the steps；Otherwise, step S60 is executed；
S50：Carry out defrosting operation；
The S60 includes repeating S20~S40.
As a preferred embodiment,
Include between the S10 and S20：
S11：When indoor temperature drops to ownership goal room temperature, compressor is shut down；It is opened when indoor temperature rises to press
When dynamic temperature, start compressor；
The S60 is specially：
Repeat S11~S40.
As a preferred embodiment, the ownership goal room temperature is 1 DEG C~3 DEG C lower than the press start-up temperature.
As a preferred embodiment, first temperature difference and second temperature difference are by measuring going out for the evaporator
Then temperature at mouthful is calculated.
As a preferred embodiment, first preset time is 2.5min~3.5min.
As a preferred embodiment, the S40 is specially：
If absolute value >=preset difference value, alternatively, the compressor accumulated running time reaches the second preset time, then execute
Step S50；
Otherwise, S60 is thened follow the steps.
As a preferred embodiment, second preset time is 120min~180min.
As a preferred embodiment, when outdoor temperature≤25 DEG C, second preset time 120min with
Above and it is less than 150min；
As 25 DEG C of outdoor temperature ＞, second preset time is in 150min or more and in 180min or less.
As a preferred embodiment, the S50 is specially：Switch four-way valve and carries out defrosting operation.
Beneficial effects of the present invention are：A kind of defrosting method of air-conditioning is provided, can effectively judge to enter defrost program
Opportunity, to air-conditioning carry out defrosting operation.
Description of the drawings
Below according to drawings and examples, invention is further described in detail.
Fig. 1 is the method block diagram of the defrosting method for the air-conditioning that embodiment provides.
Specific implementation mode
Technical solution to further illustrate the present invention below with reference to the accompanying drawings and specific embodiments.
As shown in Figure 1, the present embodiment provides a kind of air-conditioning and its defrosting method, air-conditioning includes control device, compressor, four
Port valve, throttle valve, evaporator, evaporating temperature sensor, is located at indoor indoor temperature transmitter (for measuring chamber at condenser
Interior temperature) and the parts such as the outdoor temperature sensor (for measuring outdoor temperature) that is located outside.Wherein, evaporating temperature senses
Device is arranged in the exit of evaporator.The defrosting method of air-conditioning includes the following steps S10~S60：
S10：Start since compressor second and start timing, obtains first of simultaneously storage evaporator device in the first preset time
The temperature difference.
Specifically, such as after user connects the power supply of air-conditioning, compressor be just electricity condition, but compressor at this time is
Without the work of refrigerant compression, compressor belongs to the state of shutting down.When user press lower switch after, air-conditioning by it is a series of from
Program is examined, then compressor just proceeds by compression refrigerant, and compressor just belongs to starting state at this time.It is finger pressure to start for the first time
Contracting machine obtain it is electric after first time start, second start refer to compressor it is electric after second of startup, it is continuous at one
It obtains under electricity condition, it only can be there are one first temperature difference.
Preferably, control device record evaporating temperature sensor detects while second of startup of compressor first
Temperature, after the first preset time, the second temperature that control device record evaporating temperature sensor detects, then with second
Temperature subtracts the first temperature and just obtains first temperature difference.Compressor works not yet before starting due to first time, and evaporating temperature passes
The temperature that sensor detects can relatively high (closer to the indoor temperature without cooling), so temperature difference when not starting for the first time
As criterion.And since starting second, before the collected startup of evaporating temperature sensor temperature can than more consistent, and
And the case where general air-conditioner operation time is not grown, is not in frosting substantially when second of startup.
Preferably, first preset time is 2.5min~3.5min.Usually, compressor is in 2.5min~3.5min
Stable working condition can just be entered afterwards, the numerical value measured at this time is more accurate.
S11：When indoor temperature drops to ownership goal room temperature, compressor is shut down；It is opened when indoor temperature rises to press
When dynamic temperature, start compressor.
Specifically, for example, user pass through the settings such as remote controler ownership goal room temperature after, when indoor temperature transmitter detect
To temperature reach ownership goal room temperature when, control device just shuts down compressor.Room temperature can slowly rise later, work as indoor temperature
Press start-up temperature is risen to, and compressor can be again started up.Preferably, ownership goal room temperature can be arranged to open than the press
Dynamic temperature is 1 DEG C~3 DEG C low, such setting relative energy-saving and user experience will not be too poor.
S20：The timing since being again started up compressor obtains simultaneously second temperature of the storage evaporator device in the first preset time
Difference.
Specifically, the third temperature that evaporating temperature sensor detects is recorded when compressor third time starts and starts to count
When, the 4th temperature that evaporating temperature sensor detects is recorded afterwards in the first preset time (such as 3min), is subtracted with the 4th temperature
Third temperature is gone to obtain second temperature difference (generally negative) of this startup.Similarly, when the 4th startup of compressor, record steams
It sends out the 5th temperature that temperature sensor detects and starts timing, evaporating temperature sensor detection is recorded after the first preset time
The 6th temperature arrived subtracts the 5th temperature with the 6th temperature and obtains second temperature difference (being generally also negative) of this startup.So
Analogize, since starting third time, the calculating of second temperature difference is carried out before starting every time.
S30：Calculate the absolute value of first temperature difference and the difference of second temperature difference.
Specifically, if the case where frosting does not occur in evaporator, since starting third time, start the obtained every time
Two temperature difference should all can be close with first temperature difference, and when the case where frosting occurs in evaporator, frosting situation is more serious, the second temperature
Difference will bigger (close to zero), it is bigger with the absolute value of the difference of first temperature difference.In order to avoid accidental error, not with first
The difference of the temperature difference and second temperature difference uses the absolute value of difference as standard as criterion.Such as assume that preset difference value is 1
DEG C, when first temperature difference is -2 DEG C, second temperature difference may be -2.2 DEG C or -1.8 DEG C, and using absolute value judge can be with
The influence of small range error is reduced to a certain extent.
S40：If absolute value >=preset difference value, alternatively, the compressor accumulated running time reaches the second preset time, then
Execute step S50；Otherwise, step S60 is executed.
Specifically, frosting situation is more serious, and second temperature difference will be bigger, bigger with the difference of first temperature difference, when exhausted
When reaching preset difference value to value, it should just start defrost program.Further, in order to prevent it is various it is estimated except factor (example
After compressor starts for the first time just never have and shut down, situations such as to cannot be introduced into second of startup), be also provided in limited time
The regulation of defrost.The timing since compressor starts for the first time of second preset time.
Usually, the common pressure defrost time limit should be starved and the present invention carries due to flat between 50min~70min
The absolute value determining method of confession can extend and force the defrost time limit.Preferably, when outdoor temperature≤25 DEG C, described second is default
Time is in 120min less than 150min；As 25 DEG C of outdoor temperature ＞, second preset time is in 150min or more
And in 180min or less.Specifically, show that such time setting is relatively reasonable and energy saving by largely testing.
In this present embodiment, defrost in limited time can not also be set.Only just enter defrost when absolute value >=preset difference value
Program.
S50：Carry out defrosting operation.
Preferably, by switching four-way valve or defrost can be carried out using heating tape.
S60：Repeat S11~S40.
" first " herein, " second " etc. have no special meaning just for the sake of being distinguish in description.
Additionally need statement, specific technical features described in the above specific embodiments, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (9)
1. a kind of defrosting method of air-conditioning, which is characterized in that including：
S10：The timing since second of startup of compressor obtains simultaneously first temperature of the storage evaporator device in the first preset time
Difference；
S20：The timing since being again started up compressor obtains simultaneously second temperature difference of the storage evaporator device in the first preset time；
S30：Calculate the absolute value of first temperature difference and the difference of second temperature difference；
S40：If absolute value is more than or equal to preset difference value, S50 is thened follow the steps；Otherwise, step S60 is executed；
S50：Carry out defrosting operation；
The S60 includes repeating S20~S40.
2. the defrosting method of air-conditioning according to claim 1, which is characterized in that
Include between the S10 and S20：
S11：When indoor temperature drops to ownership goal room temperature, compressor is shut down；Start temperature when indoor temperature rises to press
When spending, start compressor；
The S60 is specially：
Repeat S11~S40.
3. the defrosting method of air-conditioning according to claim 2, which is characterized in that the ownership goal room temperature is than the press
Start-up temperature is 1 DEG C~3 DEG C low.
4. the defrosting method of air-conditioning according to claim 1, which is characterized in that first temperature difference and second temperature difference are logical
It crosses the temperature in the exit for measuring the evaporator and then is calculated.
5. the defrosting method of air-conditioning according to claim 1, which is characterized in that first preset time be 2.5min~
3.5min。
6. the defrosting method of air-conditioning according to claim 1, which is characterized in that the S40 is specially：
If absolute value >=preset difference value, alternatively, the compressor accumulated running time reaches the second preset time, then follow the steps
S50；
Otherwise, step S60 is executed.
7. the defrosting method of air-conditioning according to claim 6, it is characterised in that：Second preset time be 120min~
180min。
8. the defrosting method of air-conditioning according to claim 7, it is characterised in that：
When outdoor temperature≤25 DEG C, second preset time is in 120min less than 150min；
As 25 DEG C of outdoor temperature ＞, second preset time is in 150min or more and in 180min or less.
9. the defrosting method of air-conditioning according to claim 1, which is characterized in that the S50 is specially：Switch four-way valve into
Row defrosting operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810312241.8A CN108518815A (en) | 2018-04-09 | 2018-04-09 | The defrosting method of air-conditioning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810312241.8A CN108518815A (en) | 2018-04-09 | 2018-04-09 | The defrosting method of air-conditioning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108518815A true CN108518815A (en) | 2018-09-11 |
Family
ID=63430756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810312241.8A Withdrawn CN108518815A (en) | 2018-04-09 | 2018-04-09 | The defrosting method of air-conditioning |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210389012A1 (en) * | 2018-12-29 | 2021-12-16 | Qingdao Haier Air-Conditioning Electronic Co., Ltd | Air conditioner and control method therefor |
-
2018
- 2018-04-09 CN CN201810312241.8A patent/CN108518815A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210389012A1 (en) * | 2018-12-29 | 2021-12-16 | Qingdao Haier Air-Conditioning Electronic Co., Ltd | Air conditioner and control method therefor |
| US11867421B2 (en) * | 2018-12-29 | 2024-01-09 | Qingdao Haier Air-Conditioning Electronic Co., Ltd | Air conditioner and control method therefor |
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| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication | ||
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Application publication date: 20180911 |