CN104913452A - Air conditioner and defrosting control method for same - Google Patents
Air conditioner and defrosting control method for same Download PDFInfo
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- CN104913452A CN104913452A CN201510299855.3A CN201510299855A CN104913452A CN 104913452 A CN104913452 A CN 104913452A CN 201510299855 A CN201510299855 A CN 201510299855A CN 104913452 A CN104913452 A CN 104913452A
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- 238000010257 thawing Methods 0.000 title claims abstract description 235
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000010438 heat treatment Methods 0.000 claims abstract description 40
- 230000001143 conditioned effect Effects 0.000 claims description 26
- 206010008190 Cerebrovascular accident Diseases 0.000 claims description 14
- 208000006011 Stroke Diseases 0.000 claims description 14
- 230000000694 effects Effects 0.000 abstract description 8
- 239000002699 waste material Substances 0.000 abstract description 8
- 230000007613 environmental effect Effects 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 description 8
- 230000007423 decrease Effects 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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
- F24F11/62—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
-
- 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
-
- 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
-
- 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
- F24F11/62—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
- F24F11/65—Electronic processing for selecting an operating mode
-
- 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
-
- 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
- F24F2140/30—Condensation of water from cooled air
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an air conditioner and a defrosting control method for the same. The defrosting control method comprises the following steps of acquiring accumulated running time of a compressor in the air conditioner and working current of the compressor; detecting indoor environmental temperature T1, and detecting tube temperature T2 of an indoor heat exchanger in the air conditioner; after the air conditioner enters a defrosting mode, acquiring defrosting time according to the accumulated running time of the compressor; judging whether the air conditioner is consistent with a defrosting quitting condition or not according to the working current of the compressor, the indoor environmental temperature T1, the tube temperature T2 of the indoor heat exchanger and the defrosting time; if the air conditioner is consistent with the defrosting quitting condition, controlling the air conditioner to quit the defrosting mode. According to the defrosting control method, the air conditioner can timely quit the defrosting mode after being defrosted, a heating effect can be improved, and energy waste can be avoided.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly a kind of defrosting control method of air-conditioner and a kind of air-conditioner.
Background technology
In correlation technique, when air-conditioner carries out defrost, the setting of defrost time is all formulated under worst operating mode with air-conditioner usually, therefore the setting-up time of defrost is longer, thus beyond the defrost time needed for reality, energy waste can be caused, and affect heating effect.
Further, the condition that air-conditioner exits defrost is not distinguished different refrigeration systems, and in fact the defrost condition that exits of the refrigeration system of high energy efficiency and the refrigeration system of low-energy-efficiency is different, and the required defrost time is also different.
Therefore, the air-conditioner in correlation technique can not exit defrost in time when having changed frost, needs to improve.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, one object of the present invention is the defrosting control method proposing a kind of air-conditioner, can realize air-conditioner and remove frost and exit defrosting mode in time afterwards, promotes heating effect, avoids energy waste.
Another object of the present invention is to propose a kind of air-conditioner.
For achieving the above object, the defrosting control method of a kind of air-conditioner that one aspect of the present invention embodiment proposes, comprises the following steps: obtain the accumulated running time of compressor in described air-conditioner and the operating current of described compressor; Detect indoor environment temperature T1, and detect the pipe temperature T2 of indoor heat exchanger in described air-conditioner; After described air-conditioner enters defrosting mode, the accumulated running time according to described compressor obtains defrosting time; Judge whether described air-conditioner meets defrosting exit criteria according to the pipe temperature T2 of the operating current of described compressor, described indoor environment temperature T1, described indoor heat exchanger and described defrosting time; If judge to meet described defrosting exit criteria, then control described air-conditioner and exit described defrosting mode.
According to the defrosting control method of the air-conditioner of the embodiment of the present invention, by detecting indoor environment temperature T1, the accumulated running time of the pipe temperature T2 of indoor heat exchanger and the compressor of acquisition judges the frosting situation of outdoor heat exchanger, thus acquisition defrosting time, then according to the operating current of compressor, indoor environment temperature T1, the pipe temperature T2 of indoor heat exchanger and defrosting time judge whether air-conditioner meets defrosting exit criteria, and control air-conditioner exits defrosting mode when judging to meet defrosting exit criteria, therefore, it is possible to carry out micro-stepping control to the defrosting time of air-conditioner under different situations, guaranteeing that realizing air-conditioner after air-conditioner has thoroughly removed frost exits defrosting mode in time, avoid the energy waste caused beyond the defrosting time needed for reality, increase the effective time that air conditioner heat-production runs, effectively improve the heating effect of air-conditioner and the fluctuation of room temperature.
According to one embodiment of present invention, according to the pipe temperature T2 accounting temperature difference △ T=T2-T1 of described indoor environment temperature T1 and described indoor heat exchanger, wherein, when described air-conditioner meets the following conditions, control described air-conditioner and enter described defrosting mode:
(1) when the accumulated running time of described compressor was between M1-M4 minute, described temperature gap △ T meets first pre-conditioned, or described temperature gap △ T is satisfied second pre-conditioned when the accumulated running time of described compressor is greater than M4 minute;
(2) when indoor fan runs with low wind shelves, the pipe temperature T2 of described indoor heat exchanger is less than the first preset temperature, or the pipe temperature T2 of described indoor heat exchanger is less than the second preset temperature when indoor fan runs with apoplexy shelves, or the pipe temperature T2 of described indoor heat exchanger is less than the 3rd preset temperature when indoor fan runs with high wind shelves, wherein, described first preset temperature is greater than described second preset temperature, and described second preset temperature is greater than described 3rd preset temperature;
(3), after described air-conditioner runs M minute continuously with compressor described under heating mode, described temperature gap △ T occurs that fall is more than or equal to the first temperature threshold TS1;
(4) continuous operating time of described compressor is more than or equal to M1 minute.
Further, the accumulated running time of described defrosting time and described compressor meets following relation table:
| The accumulated running time runtime (minute) of compressor | Defrosting time (minute) | |
| Situation 1 | runtime＝M1 | DT |
| Situation 2 | M1＜runtime≤M2 | DT1 |
| Situation 3 | M2＜runtime≤M3 | DT1+1 |
| Situation 4 | M3＜runtime≤M4 | DT1+2.5 |
| Situation 5 | M4＜runtime | DT1+4.5 |
Wherein, DT is the first Preset Time, and DT1 is the second Preset Time.
According to another embodiment of the invention, when described air-conditioner meets the following conditions, control described air-conditioner and enter described defrosting mode:
(1) when the accumulated running time of described compressor was between M1-M4 minute, described temperature gap △ T meets first pre-conditioned, or described temperature gap △ T is satisfied second pre-conditioned when the accumulated running time of described compressor is greater than M4 minute;
(2) when indoor fan runs with low wind shelves, the pipe temperature T2 of described indoor heat exchanger is less than the first preset temperature, or the pipe temperature T2 of described indoor heat exchanger is less than the second preset temperature when indoor fan runs with apoplexy shelves, or the pipe temperature T2 of described indoor heat exchanger is less than the 3rd preset temperature when indoor fan runs with high wind shelves, wherein, described first preset temperature is greater than described second preset temperature, and described second preset temperature is greater than described 3rd preset temperature;
(3), after described air-conditioner runs M minute continuously with compressor described under heating mode, the time that described temperature gap △ T often declines needed for the second temperature threshold TS2 is greater than M5 minute and is less than M6 minute, wherein, and TS2 < TS1;
(4) continuous operating time of described compressor is more than or equal to M1 minute.
Further, the accumulated running time of described defrosting time and described compressor meets following relation table:
| The accumulated running time runtime (minute) of compressor | Defrosting time (minute) | |
| Situation 1 | runtime＝M1 | DT-3 |
| Situation 2 | M1＜runtime≤M2 | DT1-2.5 |
| Situation 3 | M2＜runtime≤M3 | DT1-1.5 |
| Situation 4 | M3＜runtime≤M4 | DT1 |
| Situation 5 | M4＜runtime | DT1+1 |
Wherein, DT is the first Preset Time, and DT1 is the second Preset Time.
According to one embodiment of present invention, after described compressor runs M minute continuously, and the accumulated running time of described compressor is when being more than or equal to M1 minute, wherein, if the air-out wind speed of indoor fan is less than default wind speed and the time that described temperature gap △ T often declines needed for the second temperature threshold TS2 is greater than M5 minute and is less than M6 minute, then control described air-conditioner and enter described defrosting mode, and described defrosting time is the first Preset Time; If the air-out wind speed of indoor fan is less than default wind speed and described temperature gap △ T occurs that fall is more than or equal to the 3rd temperature threshold TS3, then control described air-conditioner and enter described defrosting mode, and described defrosting time is the first Preset Time, wherein, TS3 < TS1.
According to one embodiment of present invention, when meet below arbitrary condition time, judge that described air-conditioner meets described defrosting exit criteria:
(1) described defrosting time arrives;
(2) the operating current continuous N of described compressor meets or exceeds the first current threshold in 9 seconds;
(3) after described air-conditioner enters described defrosting mode very first time threshold value, if the pipe temperature T2 of described indoor heat exchanger is more than or equal to the 4th preset temperature;
(4) after described air-conditioner runs M minute continuously with compressor described under heating mode, described temperature gap △ T occurs that fall is more than or equal to the 3rd temperature threshold TS3 and the time that described temperature gap △ T often declines needed for the second temperature threshold TS2 is greater than M5 minute and is less than M7 minute, and the time that described air-conditioner carries out defrosting reaches M8 minute;
(5) after described air-conditioner enters described defrosting mode M11 minute, the minimum of a value T2min of the pipe temperature T2 of described indoor heat exchanger is obtained, if occur in the second time threshold that T2-T2min is more than or equal to the 4th temperature threshold.
For achieving the above object, a kind of air-conditioner that the present invention's another aspect embodiment proposes, comprising: compressor; Outdoor heat exchanger; Indoor heat exchanger; Indoor fan; Temperature detecting module, for detecting indoor environment temperature T1, and detects the pipe temperature T2 of indoor heat exchanger in described air-conditioner; Control module, for the operating current of accumulated running time and described compressor of obtaining described compressor, and after described air-conditioner enters defrosting mode, described control module obtains defrosting time according to the accumulated running time of described compressor, and judge whether described air-conditioner meets defrosting exit criteria according to the pipe temperature T2 of the operating current of described compressor, described indoor environment temperature T1, described indoor heat exchanger and described defrosting time, and when judging to meet described defrosting exit criteria, described control module controls described air-conditioner and exits described defrosting mode.
According to the air-conditioner of the embodiment of the present invention, by detecting indoor environment temperature T1, the accumulated running time of the pipe temperature T2 of indoor heat exchanger and the compressor of acquisition judges the frosting situation of outdoor heat exchanger, thus acquisition defrosting time, then according to the operating current of compressor, indoor environment temperature T1, the pipe temperature T2 of indoor heat exchanger and defrosting time judge whether to meet defrosting exit criteria, and exit defrosting mode when judging satisfied defrosting exit criteria, therefore, it is possible to carry out micro-stepping control to the defrosting time of air-conditioner under different situations, guaranteeing that realizing air-conditioner after air-conditioner has thoroughly removed frost exits defrosting mode in time, avoid the energy waste caused beyond the defrosting time needed for reality, increase the effective time that air conditioner heat-production runs, effectively improve the heating effect of air-conditioner and the fluctuation of room temperature.
According to one embodiment of present invention, described control module is according to the pipe temperature T2 accounting temperature difference △ T=T2-T1 of described indoor environment temperature T1 and described indoor heat exchanger, wherein, when described air-conditioner meets the following conditions, described control module controls described air-conditioner and enters described defrosting mode:
(1) when the accumulated running time of described compressor was between M1-M4 minute, described temperature gap △ T meets first pre-conditioned, or described temperature gap △ T is satisfied second pre-conditioned when the accumulated running time of described compressor is greater than M4 minute;
(2) when indoor fan runs with low wind shelves, the pipe temperature T2 of described indoor heat exchanger is less than the first preset temperature, or the pipe temperature T2 of described indoor heat exchanger is less than the second preset temperature when indoor fan runs with apoplexy shelves, or the pipe temperature T2 of described indoor heat exchanger is less than the 3rd preset temperature when indoor fan runs with high wind shelves, wherein, described first preset temperature is greater than described second preset temperature, and described second preset temperature is greater than described 3rd preset temperature;
(3), after described air-conditioner runs M minute continuously with compressor described under heating mode, described temperature gap △ T occurs that fall is more than or equal to the first temperature threshold TS1;
(4) continuous operating time of described compressor is more than or equal to M1 minute.
Further, the accumulated running time of described defrosting time and described compressor meets following relation table:
| The accumulated running time runtime (minute) of compressor | Defrosting time (minute) | |
| Situation 1 | runtime＝M1 | DT |
| Situation 2 | M1＜runtime≤M2 | DT1 |
| Situation 3 | M2＜runtime≤M3 | DT1+1 |
| Situation 4 | M3＜runtime≤M4 | DT1+2.5 |
| Situation 5 | M4＜runtime | DT1+4.5 |
Wherein, DT is the first Preset Time, and DT1 is the second Preset Time.
According to another embodiment of the invention, when described air-conditioner meets the following conditions, described control module controls described air-conditioner and enters described defrosting mode:
(1) when the accumulated running time of described compressor was between M1-M4 minute, described temperature gap △ T meets first pre-conditioned, or described temperature gap △ T is satisfied second pre-conditioned when the accumulated running time of described compressor is greater than M4 minute;
(2) when indoor fan runs with low wind shelves, the pipe temperature T2 of described indoor heat exchanger is less than the first preset temperature, or the pipe temperature T2 of described indoor heat exchanger is less than the second preset temperature when indoor fan runs with apoplexy shelves, or the pipe temperature T2 of described indoor heat exchanger is less than the 3rd preset temperature when indoor fan runs with high wind shelves, wherein, described first preset temperature is greater than described second preset temperature, and described second preset temperature is greater than described 3rd preset temperature;
(3), after described air-conditioner runs M minute continuously with compressor described under heating mode, the time that described temperature gap △ T often declines needed for the second temperature threshold TS2 is greater than M5 minute and is less than M6 minute, wherein, and TS2 < TS1;
(4) continuous operating time of described compressor is more than or equal to M1 minute.
Further, the accumulated running time of described defrosting time and described compressor meets following relation table:
| The accumulated running time runtime (minute) of compressor | Defrosting time (minute) | |
| Situation 1 | runtime＝M1 | DT-3 |
| Situation 2 | M1＜runtime≤M2 | DT1-2.5 |
| Situation 3 | M2＜runtime≤M3 | DT1-1.5 |
| Situation 4 | M3＜runtime≤M4 | DT1 |
| Situation 5 | M4＜runtime | DT1+1 |
Wherein, DT is the first Preset Time, and DT1 is the second Preset Time.
According to one embodiment of present invention, after described compressor runs M minute continuously, and the accumulated running time of described compressor is when being more than or equal to M1 minute, wherein, if the air-out wind speed of indoor fan is less than default wind speed and the time that described temperature gap △ T often declines needed for the second temperature threshold TS2 is greater than M5 minute and is less than M6 minute, described control module then controls described air-conditioner and enters described defrosting mode, and described defrosting time is the first Preset Time; If the air-out wind speed of indoor fan is less than default wind speed and described temperature gap △ T occurs that fall is more than or equal to the 3rd temperature threshold TS3, described control module then controls described air-conditioner and enters described defrosting mode, and described defrosting time is the first Preset Time, wherein, TS3 < TS1.
According to one embodiment of present invention, when meet below arbitrary condition time, described control module judges that described air-conditioner meets described defrosting exit criteria:
(1) described defrosting time arrives;
(2) the operating current continuous N of described compressor meets or exceeds the first current threshold in 9 seconds;
(3) after described air-conditioner enters described defrosting mode very first time threshold value, if the pipe temperature T2 of described indoor heat exchanger is more than or equal to the 4th preset temperature;
(4) after described air-conditioner runs M minute continuously with compressor described under heating mode, described temperature gap △ T occurs that fall is more than or equal to the 3rd temperature threshold TS3 and the time that described temperature gap △ T often declines needed for the second temperature threshold TS2 is greater than M5 minute and is less than M7 minute, and the time that described air-conditioner carries out defrosting reaches M8 minute;
(5) after described air-conditioner enters described defrosting mode M11 minute, the minimum of a value T2min of the pipe temperature T2 of described indoor heat exchanger is obtained, if occur in the second time threshold that T2-T2min is more than or equal to the 4th temperature threshold.
Accompanying drawing explanation
Fig. 1 is the flow chart of the defrosting control method of air-conditioner according to the embodiment of the present invention.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
Defrosting control method and the air-conditioner of the air-conditioner proposed according to the embodiment of the present invention are described with reference to the accompanying drawings.
Fig. 1 is the flow chart of the defrosting control method of air-conditioner according to the embodiment of the present invention.As shown in Figure 1, the defrosting control method of this air-conditioner comprises the following steps:
S1, obtains the accumulated running time of compressor and the operating current of compressor in air-conditioner.
S2, detects indoor environment temperature T1, and detects the pipe temperature T2 of indoor heat exchanger in air-conditioner.
Wherein, detect T1 by indoor environment temperature sensor, detect T2 by indoor pipe temperature temperature sensor.
S3, after air-conditioner enters defrosting mode, the accumulated running time according to compressor obtains defrosting time.
According to the pipe temperature T2 of the operating current of compressor, indoor environment temperature T1, indoor heat exchanger and defrosting time, S4, judges whether air-conditioner meets defrosting exit criteria.
S5, if judge to meet defrosting exit criteria, then controls air-conditioner and exits defrosting mode.
Therefore, the present invention by detecting the Guan Wen of indoor heat exchanger, accumulated running time of compressor of indoor environment temperature and acquisition judges the frosting situation of outdoor heat exchanger, select required defrosting time accordingly, thus unnecessary defrosting time can be reduced, increase the effective time that air conditioner heat-production runs, improve the heating capacity of air-conditioner.
In an embodiment of the present invention, also according to the pipe temperature T2 accounting temperature difference △ T=T2-T1 of described indoor environment temperature T1 and described indoor heat exchanger, and obtain the maximum △ Tmax in a period of time in temperature gap △ T.Wherein, can every 5s sampling should be carried out T2 value.
According to one embodiment of present invention, when described air-conditioner meets the following conditions, control described air-conditioner and enter described defrosting mode:
(1.1) when the accumulated running time of described compressor was between M1-M4 minute, described temperature gap △ T meets first pre-conditioned, or described temperature gap △ T is satisfied second pre-conditioned when the accumulated running time of described compressor is greater than M4 minute.
That is, in (1.1) condition, when the accumulated running time of compressor is between M1-M4 minute, and the temperature gap △ T between the pipe temperature T2 of current indoor heat exchanger and indoor environment temperature T1 meet first pre-conditioned be the relation in following table 1.
Table 1
| The wind shelves of indoor fan | △T |
| High wind shelves | ＜THDEFROST |
| Apoplexy shelves | ＜TMDEFROST |
| Low wind shelves | ＜TLDEFROST |
Wherein, THDEFROST, TMDEFROST, TLDEFROST are respectively the set temperature value of corresponding wind shelves, different values can be set according to the type of different air-conditioner, wherein THDEFROST < TMDEFROST < TLDEFROST.
Further, in (1.1) condition, when the accumulated running time of compressor is more than M4 minute, and the temperature gap △ T between the pipe temperature T2 of current indoor heat exchanger and indoor environment temperature T1 meet second pre-conditioned be the relation in following table 2.
Table 2
| The wind shelves of indoor fan | △T |
| High wind shelves | ＜THDEFROST+2 |
| Apoplexy shelves | ＜TMDEFROST+2 |
| Low wind shelves | ＜TLDEFROST+2 |
(1.2) when indoor fan runs with low wind shelves, the pipe temperature T2 of described indoor heat exchanger is less than the first preset temperature X3 DEG C, or the pipe temperature T2 of described indoor heat exchanger is less than the second preset temperature X4 DEG C when indoor fan runs with apoplexy shelves, or the pipe temperature T2 of described indoor heat exchanger is less than the 3rd preset temperature X5 DEG C when indoor fan runs with high wind shelves, wherein, described first preset temperature is greater than described second preset temperature, described second preset temperature is greater than described 3rd preset temperature, i.e. X3 > X4 > X5.
(1.3) after air-conditioner runs M minute continuously with compressor described under heating mode, described temperature gap △ T occurs that fall is more than or equal to the first temperature threshold TS1, namely, compressor starts to sample after running M minute continuously and records △ T, when the fall of △ T is more than or equal to TS1 (occurring △ Tmax-△ T >=TS1), then should (1.3) condition meet, and (1.3) condition should meet once, then can think that this condition (1.3) meets until air-conditioner enters defrosting mode always.
(1.4) continuous operating time of compressor is more than or equal to M1 minute.
That is, in the present embodiment, satisfy condition (1.1), condition (1.2), condition (1.3) and the continuous operating time of compressor is more than or equal to M1 minute, then control air-conditioner and enter defrosting mode simultaneously.Further, can set defrosting time according to following table 3, namely the accumulated running time of described defrosting time and described compressor meets following relation table:
Table 3
| The accumulated running time runtime (minute) of compressor | Defrosting time (minute) | |
| Situation 1 | runtime＝M1 | DT |
| Situation 2 | M1＜runtime≤M2 | DT1 |
| Situation 3 | M2＜runtime≤M3 | DT1+1 |
| Situation 4 | M3＜runtime≤M4 | DT1+2.5 |
| Situation 5 | M4＜runtime | DT1+4.5 |
Wherein, DT is the first Preset Time, and DT1 is the second Preset Time, DT and DT1 can demarcate according to actual conditions.
According to another embodiment of the invention, when described air-conditioner meets the following conditions, control described air-conditioner and enter described defrosting mode:
(1.1) when the accumulated running time of described compressor was between M1-M4 minute, described temperature gap △ T meets first pre-conditioned, or described temperature gap △ T is satisfied second pre-conditioned when the accumulated running time of described compressor is greater than M4 minute.
(1.2) when indoor fan runs with low wind shelves, the pipe temperature T2 of described indoor heat exchanger is less than the first preset temperature, or the pipe temperature T2 of described indoor heat exchanger is less than the second preset temperature when indoor fan runs with apoplexy shelves, or the pipe temperature T2 of described indoor heat exchanger is less than the 3rd preset temperature when indoor fan runs with high wind shelves, wherein, described first preset temperature is greater than described second preset temperature, and described second preset temperature is greater than described 3rd preset temperature.
(1.4) continuous operating time of described compressor is more than or equal to M1 minute.
(1.5), after described air-conditioner runs M minute continuously with compressor described under heating mode, the time that described temperature gap △ T often declines needed for the second temperature threshold TS2 is greater than M5 minute and is less than M6 minute, wherein, and TS2 < TS1.That is, compressor starts to sample after running M minute continuously and records △ T, obtain △ T often to decline the second temperature threshold TS2 time t used, as M5 < t < M6, then should (1.5) condition meet, and (1.5) condition should meet once, then can think that this condition (1.5) meets until air-conditioner enters defrosting mode always.
That is, in the present embodiment, satisfy condition (1.1), condition (1.2), condition (1.5) and the continuous operating time of compressor is more than or equal to M1 minute, then control air-conditioner and enter defrosting mode simultaneously.Further, can set defrosting time according to following table 4, namely the accumulated running time of described defrosting time and described compressor meets following relation table:
Table 4
| The accumulated running time runtime (minute) of compressor | Defrosting time (minute) | |
| Situation 1 | runtime＝M1 | DT-3 |
| Situation 2 | M1＜runtime≤M2 | DT1-2.5 |
| Situation 3 | M2＜runtime≤M3 | DT1-1.5 |
| Situation 4 | M3＜runtime≤M4 | DT1 |
| Situation 5 | M4＜runtime | DT1+1 |
Wherein, DT is the first Preset Time, and DT1 is the second Preset Time, DT and DT1 can demarcate according to actual conditions.
According to still another embodiment of the invention, after described compressor runs M minute continuously, and the accumulated running time of described compressor is when being more than or equal to M1 minute, wherein, if the air-out wind speed of indoor fan be less than default wind speed and indoor fan air-out for gentle breeze and the time that described temperature gap △ T often declines needed for the second temperature threshold TS2 be greater than M5 minute and be less than M6 minute, then control described air-conditioner and enter described defrosting mode, and described defrosting time is the first Preset Time DT; If the air-out wind speed of indoor fan is less than default wind speed and indoor fan air-out is gentle breeze and described temperature gap △ T occurs that fall is more than or equal to the 3rd temperature threshold TS3 (△ Tmax-△ T >=TS3), then control described air-conditioner and enter described defrosting mode, and described defrosting time is the first Preset Time DT, wherein, TS3 < TS1.Therefore, gentle breeze defrosting during anti-cold wind can be realized.
Wherein, when the fall of △ T is more than or equal to TS3 (occurring △ Tmax-△ T >=TS3), then this condition meets, and this condition meets once, then can think that this condition meets until air-conditioner enters defrosting mode always.
According to one embodiment of present invention, when meet below arbitrary condition time, judge that described air-conditioner meets described defrosting exit criteria:
(2.1) defrosting time arrives, and namely air-conditioner starts timing after entering defrosting mode, when timing time reaches the defrosting time of setting, meets defrosting exit criteria.
(2.2) the operating current continuous N of compressor meets or exceeds the first current threshold M10 ampere for 9 seconds, and wherein, M9 and M10 can demarcate according to actual conditions.
(2.3) air-conditioner enters described defrosting mode very first time threshold value after such as 3 minutes, if the pipe temperature T2 of described indoor heat exchanger is more than or equal to the 4th preset temperature X6.Wherein, X3 > X4 > X5 > X6, X3, X4, X5, X6 can demarcate according to actual conditions.
(2.4) after air-conditioner runs M minute continuously with compressor described under heating mode, described temperature gap △ T occurs that fall is more than or equal to the 3rd temperature threshold TS3 (occurring △ Tmax-△ T >=TS3) and the time that described temperature gap △ T often declines needed for the second temperature threshold TS2 is greater than M5 minute and is less than M7 minute, and the time that described air-conditioner carries out defrosting reaches M8 minute.That is, should (2.4) condition can be divided into:
Under a, heating mode, after compressor runs M minute continuously, the fall of △ T is more than or equal to TS3 (occurring △ Tmax-△ T >=TS3), and this condition meets once, then can think that this condition meets always, wherein, and TS3 < TS1;
Under b, heating mode, after compressor runs M minute continuously, start to sample and record △ T, obtain △ T often to decline the second temperature threshold TS2 time t used, as M5 < t < M7, this condition meets, and this condition meets once, then can think that this condition meets always, wherein, TS2 < TS1.
Namely say, condition a and condition b meets simultaneously and after the time that air-conditioner carries out defrosting reaches M8 minute, control air-conditioner and exit defrosting mode.Wherein, M5 < M8 < M7 < M1 < M2 < M3 < M4.
In an embodiment of the present invention, M, M1, M2, M3, M4, M5, M6, M7, M8 all can demarcate.
(2.5) after air-conditioner enters defrosting mode M11 minute, the minimum of a value T2min of the pipe temperature T2 of described indoor heat exchanger is obtained, if the second time threshold occurs in such as 4 minutes that T2-T2min is more than or equal to the 4th temperature threshold such as 2 DEG C.
Namely say, after air-conditioner enters and defrosts M11 (can demarcate) minute, start to detect T2 (every 5s detects a T2 value) value, and record the minimum of a value T2min of T2, if in 4 minutes (from record obtains T2min timing), occur that T2-T2min >=2 are DEG C (during T2≤-X7 DEG C, think T2=-X7 DEG C), then control air-conditioner and exit defrosting mode, otherwise air-conditioner according to condition (2.1), condition (2.2), condition (2.3) or condition (2.4) exits defrosting mode.
In sum, in an embodiment of the present invention, micro-stepping control has been carried out to the defrosting time under different air-conditioner different situations, under guaranteeing that air-conditioner has thoroughly removed the prerequisite of frost, realize air-conditioner and exit defrosting mode in time, avoid the waste caused beyond the defrosting time needed for reality, effectively improve the fluctuation of heating effect and room temperature.
Particularly, in one embodiment of the invention, when air conditioner heat-production runs, compressor starts after running M minute continuously to record △ T, and compare △ Tmax, if judge that air-conditioner meets above-mentioned condition (1.1), condition (1.2), condition (1.3), but the continuous operating time of compressor is less than M1 minute, then air-conditioner proceeds heating operation, does not enter defrosting mode; If the continuous operating time of compressor is more than or equal to M1 minute, but do not meet above-mentioned condition (1.1), condition (1.2), condition (1.3), then air-conditioner proceeds heating operation, does not enter defrosting mode; If judge that air-conditioner meets above-mentioned condition (1.1), condition (1.2), condition (1.3), and the continuous operating time of compressor is more than or equal to M1 minute, then control air-conditioner and enter defrosting mode operation, defrosting time is determined according to upper table 3.Further, after judging that air-conditioner reaches defrosting exit criteria, control air-conditioner and exit defrosting mode, continue to run with heating mode.
Or, when air conditioner heat-production runs, compressor starts after running M minute continuously to record △ T, and compare △ Tmax, if judge that air-conditioner meets above-mentioned condition (1.1), condition (1.2), condition (1.5), but the continuous operating time of compressor is less than M1 minute, then air-conditioner proceeds heating operation, does not enter defrosting mode; If the continuous operating time of compressor is more than or equal to M1 minute, but do not meet above-mentioned condition (1.1), condition (1.2), condition (1.5), then air-conditioner proceeds heating operation, does not enter defrosting mode; If judge that air-conditioner meets above-mentioned condition (1.1), condition (1.2), condition (1.5), and the continuous operating time of compressor is more than or equal to M1 minute, then control air-conditioner and enter defrosting mode operation, defrosting time is determined according to upper table 4.Further, after judging that air-conditioner reaches defrosting exit criteria, control air-conditioner and exit defrosting mode, continue to run with heating mode.
Or, when air conditioner heat-production runs, compressor starts after running M minute continuously to record △ T, and compare △ Tmax, if meet above-mentioned condition (1.5) or temperature gap △ T occurs that fall is more than or equal to the 3rd temperature threshold TS3 (△ Tmax-△ T >=TS3), but the continuous operating time of compressor is less than M1 minute, then air-conditioner proceeds heating operation, does not enter defrosting mode; If the continuous operating time of compressor is more than or equal to M1 minute, but do not meet above-mentioned condition (1.5) or do not meet temperature gap △ T and occur that fall is more than or equal to the 3rd temperature threshold TS3 (△ Tmax-△ T >=TS3), then air-conditioner proceeds heating operation, does not enter defrosting mode; If meet above-mentioned condition (1.5) or temperature gap △ T occurs that fall is more than or equal to the 3rd temperature threshold TS3 (△ Tmax-△ T >=TS3), and the continuous operating time of compressor is more than or equal to M1 minute, then control air-conditioner and enter defrosting mode operation, defrosting time is the first Preset Time DT.Further, after judging that air-conditioner reaches defrosting exit criteria, control air-conditioner and exit defrosting mode, continue to run with heating mode.
According to the defrosting control method of the air-conditioner of the embodiment of the present invention, by detecting indoor environment temperature T1, the accumulated running time of the pipe temperature T2 of indoor heat exchanger and the compressor of acquisition judges the frosting situation of outdoor heat exchanger, thus acquisition defrosting time, then according to the operating current of compressor, indoor environment temperature T1, the pipe temperature T2 of indoor heat exchanger and defrosting time judge whether air-conditioner meets defrosting exit criteria, and control air-conditioner exits defrosting mode when judging to meet defrosting exit criteria, therefore, it is possible to carry out micro-stepping control to the defrosting time of air-conditioner under different situations, guaranteeing that realizing air-conditioner after air-conditioner has thoroughly removed frost exits defrosting mode in time, avoid the energy waste caused beyond the defrosting time needed for reality, increase the effective time that air conditioner heat-production runs, effectively improve the heating effect of air-conditioner and the fluctuation of room temperature.
In addition, embodiments of the invention also proposed a kind of air-conditioner, and it comprises: compressor, outdoor heat exchanger, indoor heat exchanger, indoor fan, temperature detecting module and control module.
Wherein, temperature detecting module for detecting indoor environment temperature T1, and detects the pipe temperature T2 of indoor heat exchanger in described air-conditioner.Temperature detecting module can comprise indoor environment temperature sensor and indoor pipe temperature temperature sensor.
Control module is for the operating current of accumulated running time and described compressor of obtaining described compressor, and after described air-conditioner enters defrosting mode, described control module obtains defrosting time according to the accumulated running time of described compressor, and judge whether described air-conditioner meets defrosting exit criteria according to the pipe temperature T2 of the operating current of described compressor, described indoor environment temperature T1, described indoor heat exchanger and described defrosting time, and when judging to meet described defrosting exit criteria, described control module controls described air-conditioner and exits described defrosting mode.
According to one embodiment of present invention, described control module according to the pipe temperature T2 accounting temperature difference △ T=T2-T1 of described indoor environment temperature T1 and described indoor heat exchanger, and obtains the maximum △ Tmax in a period of time in temperature gap △ T.Wherein, can every 5s sampling should be carried out T2 value.
Wherein, when described air-conditioner meets the following conditions, described control module controls described air-conditioner and enters described defrosting mode:
(1.1) when the accumulated running time of described compressor was between M1-M4 minute, described temperature gap △ T meets first pre-conditioned, or described temperature gap △ T is satisfied second pre-conditioned when the accumulated running time of described compressor is greater than M4 minute.
(1.2) when indoor fan runs with low wind shelves, the pipe temperature T2 of described indoor heat exchanger is less than the first preset temperature X3 DEG C, or the pipe temperature T2 of described indoor heat exchanger is less than the second preset temperature X4 DEG C when indoor fan runs with apoplexy shelves, or the pipe temperature T2 of described indoor heat exchanger is less than the 3rd preset temperature X5 DEG C when indoor fan runs with high wind shelves, wherein, described first preset temperature is greater than described second preset temperature, described second preset temperature is greater than described 3rd preset temperature, i.e. X3 > X4 > X5.
(1.3) after air-conditioner runs M minute continuously with compressor described under heating mode, described temperature gap △ T occurs that fall is more than or equal to the first temperature threshold TS1, namely, compressor starts to sample after running M minute continuously and records △ T, when the fall of △ T is more than or equal to TS1 (occurring △ Tmax-△ T >=TS1), then should (1.3) condition meet, and (1.3) condition should meet once, then can think that this condition (1.3) meets until air-conditioner enters defrosting mode always.
(1.4) continuous operating time of compressor is more than or equal to M1 minute.
That is, in the present embodiment, satisfy condition (1.1), condition (1.2), condition (1.3) and the continuous operating time of compressor is more than or equal to M1 minute, then control air-conditioner and enter defrosting mode simultaneously.Further, can set defrosting time according to upper table 3, namely the accumulated running time of described defrosting time and described compressor meets the relation of upper table 3.
According to another embodiment of the invention, when described air-conditioner meets the following conditions, described control module controls described air-conditioner and enters described defrosting mode:
(1.1) when the accumulated running time of described compressor was between M1-M4 minute, described temperature gap △ T meets first pre-conditioned, or described temperature gap △ T is satisfied second pre-conditioned when the accumulated running time of described compressor is greater than M4 minute.
(1.2) when indoor fan runs with low wind shelves, the pipe temperature T2 of described indoor heat exchanger is less than the first preset temperature, or the pipe temperature T2 of described indoor heat exchanger is less than the second preset temperature when indoor fan runs with apoplexy shelves, or the pipe temperature T2 of described indoor heat exchanger is less than the 3rd preset temperature when indoor fan runs with high wind shelves, wherein, described first preset temperature is greater than described second preset temperature, and described second preset temperature is greater than described 3rd preset temperature.
(1.4) continuous operating time of described compressor is more than or equal to M1 minute.
(1.5), after described air-conditioner runs M minute continuously with compressor described under heating mode, the time that described temperature gap △ T often declines needed for the second temperature threshold TS2 is greater than M5 minute and is less than M6 minute, wherein, and TS2 < TS1.That is, compressor starts to sample after running M minute continuously and records △ T, obtain △ T often to decline the second temperature threshold TS2 time t used, as M5 < t < M6, then should (1.5) condition meet, and (1.5) condition should meet once, then can think that this condition (1.5) meets until air-conditioner enters defrosting mode always.
That is, in the present embodiment, satisfy condition (1.1), condition (1.2), condition (1.5) and the continuous operating time of compressor is more than or equal to M1 minute, then control air-conditioner and enter defrosting mode simultaneously.Further, can set defrosting time according to upper table 4, namely the accumulated running time of described defrosting time and described compressor meets the relation of upper table 4.
According to still another embodiment of the invention, after described compressor runs M minute continuously, and the accumulated running time of described compressor is when being more than or equal to M1 minute, wherein, if the air-out wind speed of indoor fan is less than default wind speed and the time that described temperature gap △ T often declines needed for the second temperature threshold TS2 is greater than M5 minute and is less than M6 minute, described control module then controls described air-conditioner and enters described defrosting mode, and described defrosting time is the first Preset Time; If the air-out wind speed of indoor fan is less than default wind speed and described temperature gap △ T occurs that fall is more than or equal to the 3rd temperature threshold TS3, described control module then controls described air-conditioner and enters described defrosting mode, and described defrosting time is the first Preset Time, wherein, TS3 < TS1.
Wherein, when the fall of △ T is more than or equal to TS3 (occurring △ Tmax-△ T >=TS3), then this condition meets, and this condition meets once, then can think that this condition meets until air-conditioner enters defrosting mode always.
According to one embodiment of present invention, when meet below arbitrary condition time, described control module judges that described air-conditioner meets described defrosting exit criteria:
(2.1) defrosting time arrives, and namely air-conditioner starts timing after entering defrosting mode, when timing time reaches the defrosting time of setting, meets defrosting exit criteria.
(2.2) the operating current continuous N of compressor meets or exceeds the first current threshold M10 ampere for 9 seconds, and wherein, M9 and M10 can demarcate according to actual conditions.
(2.3) air-conditioner enters described defrosting mode very first time threshold value after such as 3 minutes, if the pipe temperature T2 of described indoor heat exchanger is more than or equal to the 4th preset temperature X6.Wherein, X3 > X4 > X5 > X6, X3, X4, X5, X6 can demarcate according to actual conditions.
(2.4) after air-conditioner runs M minute continuously with compressor described under heating mode, described temperature gap △ T occurs that fall is more than or equal to the 3rd temperature threshold TS3 (occurring △ Tmax-△ T >=TS3) and the time that described temperature gap △ T often declines needed for the second temperature threshold TS2 is greater than M5 minute and is less than M7 minute, and the time that described air-conditioner carries out defrosting reaches M8 minute.That is, should (2.4) condition can be divided into:
Under a, heating mode, after compressor runs M minute continuously, the fall of △ T is more than or equal to TS3 (occurring △ Tmax-△ T >=TS3), and this condition meets once, then can think that this condition meets always, wherein, and TS3 < TS1;
Under b, heating mode, after compressor runs M minute continuously, start to sample and record △ T, obtain △ T often to decline the second temperature threshold TS2 time t used, as M5 < t < M7, this condition meets, and this condition meets once, then can think that this condition meets always, wherein, TS2 < TS1.
Namely say, condition a and condition b meets simultaneously and after the time that air-conditioner carries out defrosting reaches M8 minute, control air-conditioner and exit defrosting mode.Wherein, M5 < M8 < M7 < M1 < M2 < M3 < M4.
In an embodiment of the present invention, M, M1, M2, M3, M4, M5, M6, M7, M8 all can demarcate.
(2.5) after air-conditioner enters defrosting mode M11 minute, the minimum of a value T2min of the pipe temperature T2 of described indoor heat exchanger is obtained, if the second time threshold occurs in such as 4 minutes that T2-T2min is more than or equal to the 4th temperature threshold such as 2 DEG C.
According to the air-conditioner of the embodiment of the present invention, by detecting indoor environment temperature T1, the accumulated running time of the pipe temperature T2 of indoor heat exchanger and the compressor of acquisition judges the frosting situation of outdoor heat exchanger, thus acquisition defrosting time, then according to the operating current of compressor, indoor environment temperature T1, the pipe temperature T2 of indoor heat exchanger and defrosting time judge whether to meet defrosting exit criteria, and exit defrosting mode when judging satisfied defrosting exit criteria, therefore, it is possible to carry out micro-stepping control to the defrosting time of air-conditioner under different situations, guaranteeing that realizing air-conditioner after air-conditioner has thoroughly removed frost exits defrosting mode in time, avoid the energy waste caused beyond the defrosting time needed for reality, increase the effective time that air conditioner heat-production runs, effectively improve the heating effect of air-conditioner and the fluctuation of room temperature.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In describing the invention, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this description or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (14)
1. a defrosting control method for air-conditioner, is characterized in that, comprises the following steps:
Obtain the accumulated running time of compressor in described air-conditioner and the operating current of described compressor;
Detect indoor environment temperature T1, and detect the pipe temperature T2 of indoor heat exchanger in described air-conditioner;
After described air-conditioner enters defrosting mode, the accumulated running time according to described compressor obtains defrosting time;
Judge whether described air-conditioner meets defrosting exit criteria according to the pipe temperature T2 of the operating current of described compressor, described indoor environment temperature T1, described indoor heat exchanger and described defrosting time;
If judge to meet described defrosting exit criteria, then control described air-conditioner and exit described defrosting mode.
2. the defrosting control method of air-conditioner according to claim 1, it is characterized in that, according to the pipe temperature T2 accounting temperature difference △ T=T2-T1 of described indoor environment temperature T1 and described indoor heat exchanger, wherein, when described air-conditioner meets the following conditions, control described air-conditioner and enter described defrosting mode:
(1) when the accumulated running time of described compressor was between M1-M4 minute, described temperature gap △ T meets first pre-conditioned, or described temperature gap △ T is satisfied second pre-conditioned when the accumulated running time of described compressor is greater than M4 minute;
(2) when indoor fan runs with low wind shelves, the pipe temperature T2 of described indoor heat exchanger is less than the first preset temperature, or the pipe temperature T2 of described indoor heat exchanger is less than the second preset temperature when indoor fan runs with apoplexy shelves, or the pipe temperature T2 of described indoor heat exchanger is less than the 3rd preset temperature when indoor fan runs with high wind shelves, wherein, described first preset temperature is greater than described second preset temperature, and described second preset temperature is greater than described 3rd preset temperature;
(3), after described air-conditioner runs M minute continuously with compressor described under heating mode, described temperature gap △ T occurs that fall is more than or equal to the first temperature threshold TS1;
(4) continuous operating time of described compressor is more than or equal to M1 minute.
3. the defrosting control method of air-conditioner according to claim 2, is characterized in that, when described air-conditioner meets the following conditions, controls described air-conditioner and enters described defrosting mode:
(1) when the accumulated running time of described compressor was between M1-M4 minute, described temperature gap △ T meets first pre-conditioned, or described temperature gap △ T is satisfied second pre-conditioned when the accumulated running time of described compressor is greater than M4 minute;
(2) when indoor fan runs with low wind shelves, the pipe temperature T2 of described indoor heat exchanger is less than the first preset temperature, or the pipe temperature T2 of described indoor heat exchanger is less than the second preset temperature when indoor fan runs with apoplexy shelves, or the pipe temperature T2 of described indoor heat exchanger is less than the 3rd preset temperature when indoor fan runs with high wind shelves, wherein, described first preset temperature is greater than described second preset temperature, and described second preset temperature is greater than described 3rd preset temperature;
(3), after described air-conditioner runs M minute continuously with compressor described under heating mode, the time that described temperature gap △ T often declines needed for the second temperature threshold TS2 is greater than M5 minute and is less than M6 minute, wherein, and TS2 < TS1;
(4) continuous operating time of described compressor is more than or equal to M1 minute.
4. the defrosting control method of air-conditioner according to claim 2, is characterized in that, the accumulated running time of described defrosting time and described compressor meets following relation table:
Wherein, DT is the first Preset Time, and DT1 is the second Preset Time.
5. the defrosting control method of air-conditioner according to claim 3, is characterized in that, the accumulated running time of described defrosting time and described compressor meets following relation table:
Wherein, DT is the first Preset Time, and DT1 is the second Preset Time.
6. the defrosting control method of air-conditioner according to claim 2, is characterized in that, after described compressor runs M minute continuously, and when the accumulated running time of described compressor is more than or equal to M1 minute, wherein,
If the air-out wind speed of indoor fan is less than default wind speed and the time that described temperature gap △ T often declines needed for the second temperature threshold TS2 is greater than M5 minute and is less than M6 minute, then control described air-conditioner and enter described defrosting mode, and described defrosting time is the first Preset Time;
If the air-out wind speed of indoor fan is less than default wind speed and described temperature gap △ T occurs that fall is more than or equal to the 3rd temperature threshold TS3, then control described air-conditioner and enter described defrosting mode, and described defrosting time is the first Preset Time, wherein, TS3 < TS1.
7. the defrosting control method of air-conditioner according to claim 1, is characterized in that, when meet below arbitrary condition time, judge that described air-conditioner meets described defrosting exit criteria:
(1) described defrosting time arrives;
(2) the operating current continuous N of described compressor meets or exceeds the first current threshold in 9 seconds;
(3) after described air-conditioner enters described defrosting mode very first time threshold value, if the pipe temperature T2 of described indoor heat exchanger is more than or equal to the 4th preset temperature;
(4) after described air-conditioner runs M minute continuously with compressor described under heating mode, described temperature gap △ T occurs that fall is more than or equal to the 3rd temperature threshold TS3 and the time that described temperature gap △ T often declines needed for the second temperature threshold TS2 is greater than M5 minute and is less than M7 minute, and the time that described air-conditioner carries out defrosting reaches M8 minute;
(5) after described air-conditioner enters described defrosting mode M11 minute, the minimum of a value T2min of the pipe temperature T2 of described indoor heat exchanger is obtained, if occur in the second time threshold that T2-T2min is more than or equal to the 4th temperature threshold.
8. an air-conditioner, is characterized in that, comprising:
Compressor;
Outdoor heat exchanger;
Indoor heat exchanger;
Indoor fan;
Temperature detecting module, for detecting indoor environment temperature T1, and detects the pipe temperature T2 of indoor heat exchanger in described air-conditioner;
Control module, for the operating current of accumulated running time and described compressor of obtaining described compressor, and after described air-conditioner enters defrosting mode, described control module obtains defrosting time according to the accumulated running time of described compressor, and judge whether described air-conditioner meets defrosting exit criteria according to the pipe temperature T2 of the operating current of described compressor, described indoor environment temperature T1, described indoor heat exchanger and described defrosting time, and when judging to meet described defrosting exit criteria, described control module controls described air-conditioner and exits described defrosting mode.
9. air-conditioner according to claim 8, it is characterized in that, described control module is according to the pipe temperature T2 accounting temperature difference △ T=T2-T1 of described indoor environment temperature T1 and described indoor heat exchanger, wherein, when described air-conditioner meets the following conditions, described control module controls described air-conditioner and enters described defrosting mode:
(1) when the accumulated running time of described compressor was between M1-M4 minute, described temperature gap △ T meets first pre-conditioned, or described temperature gap △ T is satisfied second pre-conditioned when the accumulated running time of described compressor is greater than M4 minute;
(2) when indoor fan runs with low wind shelves, the pipe temperature T2 of described indoor heat exchanger is less than the first preset temperature, or the pipe temperature T2 of described indoor heat exchanger is less than the second preset temperature when indoor fan runs with apoplexy shelves, or the pipe temperature T2 of described indoor heat exchanger is less than the 3rd preset temperature when indoor fan runs with high wind shelves, wherein, described first preset temperature is greater than described second preset temperature, and described second preset temperature is greater than described 3rd preset temperature;
(3), after described air-conditioner runs M minute continuously with compressor described under heating mode, described temperature gap △ T occurs that fall is more than or equal to the first temperature threshold TS1;
(4) continuous operating time of described compressor is more than or equal to M1 minute.
10. air-conditioner according to claim 9, is characterized in that, when described air-conditioner meets the following conditions, described control module controls described air-conditioner and enters described defrosting mode:
(1) when the accumulated running time of described compressor was between M1-M4 minute, described temperature gap △ T meets first pre-conditioned, or described temperature gap △ T is satisfied second pre-conditioned when the accumulated running time of described compressor is greater than M4 minute;
(2) when indoor fan runs with low wind shelves, the pipe temperature T2 of described indoor heat exchanger is less than the first preset temperature, or the pipe temperature T2 of described indoor heat exchanger is less than the second preset temperature when indoor fan runs with apoplexy shelves, or the pipe temperature T2 of described indoor heat exchanger is less than the 3rd preset temperature when indoor fan runs with high wind shelves, wherein, described first preset temperature is greater than described second preset temperature, and described second preset temperature is greater than described 3rd preset temperature;
(3), after described air-conditioner runs M minute continuously with compressor described under heating mode, the time that described temperature gap △ T often declines needed for the second temperature threshold TS2 is greater than M5 minute and is less than M6 minute, wherein, and TS2 < TS1;
(4) continuous operating time of described compressor is more than or equal to M1 minute.
11. air-conditioners according to claim 9, is characterized in that, the accumulated running time of described defrosting time and described compressor meets following relation table:
Wherein, DT is the first Preset Time, and DT1 is the second Preset Time.
12. air-conditioners according to claim 10, is characterized in that, the accumulated running time of described defrosting time and described compressor meets following relation table:
Wherein, DT is the first Preset Time, and DT1 is the second Preset Time.
13. air-conditioners according to claim 9, is characterized in that, after described compressor runs M minute continuously, and when the accumulated running time of described compressor is more than or equal to M1 minute, wherein,
If the air-out wind speed of indoor fan is less than default wind speed and the time that described temperature gap △ T often declines needed for the second temperature threshold TS2 is greater than M5 minute and is less than M6 minute, described control module then controls described air-conditioner and enters described defrosting mode, and described defrosting time is the first Preset Time;
If the air-out wind speed of indoor fan is less than default wind speed and described temperature gap △ T occurs that fall is more than or equal to the 3rd temperature threshold TS3, described control module then controls described air-conditioner and enters described defrosting mode, and described defrosting time is the first Preset Time, wherein, TS3 < TS1.
14. air-conditioners according to claim 8, is characterized in that, when meet below arbitrary condition time, described control module judges that described air-conditioner meets described defrosting exit criteria:
(1) described defrosting time arrives;
(2) the operating current continuous N of described compressor meets or exceeds the first current threshold in 9 seconds;
(3) after described air-conditioner enters described defrosting mode very first time threshold value, if the pipe temperature T2 of described indoor heat exchanger is more than or equal to the 4th preset temperature;
(4) after described air-conditioner runs M minute continuously with compressor described under heating mode, described temperature gap △ T occurs that fall is more than or equal to the 3rd temperature threshold TS3 and the time that described temperature gap △ T often declines needed for the second temperature threshold TS2 is greater than M5 minute and is less than M7 minute, and the time that described air-conditioner carries out defrosting reaches M8 minute;
(5) after described air-conditioner enters described defrosting mode M11 minute, the minimum of a value T2min of the pipe temperature T2 of described indoor heat exchanger is obtained, if occur in the second time threshold that T2-T2min is more than or equal to the 4th temperature threshold.
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| CN108444134A (en) * | 2018-02-14 | 2018-08-24 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07174440A (en) * | 1993-12-20 | 1995-07-14 | Fujitsu General Ltd | Defrost controller for air conditioner |
| CN1467463A (en) * | 2002-06-25 | 2004-01-14 | 三洋电机株式会社 | Air-conditioning plant and defrosting operation method |
| CN101793429A (en) * | 2010-02-26 | 2010-08-04 | 广东美的电器股份有限公司 | Intelligent defrosting control method of split air conditioner |
| CN102759239A (en) * | 2012-07-18 | 2012-10-31 | 广东志高空调有限公司 | Defrosting method combining temperature change with current value change for air conditioner and controller thereof |
| JP2013133977A (en) * | 2011-12-26 | 2013-07-08 | Panasonic Corp | Air conditioner |
| CN103256766A (en) * | 2013-05-03 | 2013-08-21 | 广东美的制冷设备有限公司 | Method for controlling intelligent defrosting of air conditioner |
| CN103575004A (en) * | 2012-08-01 | 2014-02-12 | 青岛海尔空调电子有限公司 | Defrosting method and defrosting device for air conditioner |
| CN104019593A (en) * | 2013-02-28 | 2014-09-03 | 广东美的制冷设备有限公司 | Defrosting method of air conditioner |
| CN104180571A (en) * | 2014-08-25 | 2014-12-03 | 广东美的集团芜湖制冷设备有限公司 | Air conditioner defrosting control method and device and air conditioner |
| CN104180478A (en) * | 2014-08-22 | 2014-12-03 | 广东美的集团芜湖制冷设备有限公司 | Air conditioner defrosting control method and device and air conditioner |
| CN104279698A (en) * | 2014-09-28 | 2015-01-14 | 芜湖美智空调设备有限公司 | Mobile air conditioner and defrosting control method thereof |
-
2015
- 2015-06-03 CN CN201510299855.3A patent/CN104913452B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07174440A (en) * | 1993-12-20 | 1995-07-14 | Fujitsu General Ltd | Defrost controller for air conditioner |
| CN1467463A (en) * | 2002-06-25 | 2004-01-14 | 三洋电机株式会社 | Air-conditioning plant and defrosting operation method |
| CN101793429A (en) * | 2010-02-26 | 2010-08-04 | 广东美的电器股份有限公司 | Intelligent defrosting control method of split air conditioner |
| JP2013133977A (en) * | 2011-12-26 | 2013-07-08 | Panasonic Corp | Air conditioner |
| CN102759239A (en) * | 2012-07-18 | 2012-10-31 | 广东志高空调有限公司 | Defrosting method combining temperature change with current value change for air conditioner and controller thereof |
| CN103575004A (en) * | 2012-08-01 | 2014-02-12 | 青岛海尔空调电子有限公司 | Defrosting method and defrosting device for air conditioner |
| CN104019593A (en) * | 2013-02-28 | 2014-09-03 | 广东美的制冷设备有限公司 | Defrosting method of air conditioner |
| CN103256766A (en) * | 2013-05-03 | 2013-08-21 | 广东美的制冷设备有限公司 | Method for controlling intelligent defrosting of air conditioner |
| CN104180478A (en) * | 2014-08-22 | 2014-12-03 | 广东美的集团芜湖制冷设备有限公司 | Air conditioner defrosting control method and device and air conditioner |
| CN104180571A (en) * | 2014-08-25 | 2014-12-03 | 广东美的集团芜湖制冷设备有限公司 | Air conditioner defrosting control method and device and air conditioner |
| CN104279698A (en) * | 2014-09-28 | 2015-01-14 | 芜湖美智空调设备有限公司 | Mobile air conditioner and defrosting control method thereof |
Cited By (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109695937A (en) * | 2017-10-20 | 2019-04-30 | 奥克斯空调股份有限公司 | A kind of air-conditioner defrosting control method |
| CN108444134A (en) * | 2018-02-14 | 2018-08-24 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method |
| CN108800435A (en) * | 2018-06-01 | 2018-11-13 | 青岛海尔空调器有限总公司 | air conditioner defrosting control method |
| CN108800451A (en) * | 2018-06-01 | 2018-11-13 | 青岛海尔空调器有限总公司 | air conditioner defrosting control method |
| CN108800451B (en) * | 2018-06-01 | 2021-03-16 | 青岛海尔空调器有限总公司 | Defrosting control method for air conditioner |
| CN108800435B (en) * | 2018-06-01 | 2021-03-16 | 青岛海尔空调器有限总公司 | Defrosting control method for air conditioner |
| CN110631207A (en) * | 2018-06-25 | 2019-12-31 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method and device |
| CN110631207B (en) * | 2018-06-25 | 2022-06-14 | 青岛海尔空调器有限总公司 | Defrosting control method and device for air conditioner |
| CN110631203B (en) * | 2018-06-25 | 2021-12-21 | 重庆海尔空调器有限公司 | Defrosting control method and device for air conditioner |
| CN110631203A (en) * | 2018-06-25 | 2019-12-31 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method and device |
| CN109654678A (en) * | 2018-11-13 | 2019-04-19 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method |
| CN111189171A (en) * | 2018-11-14 | 2020-05-22 | 青岛海尔空调器有限总公司 | Air conditioner and anti-freezing control method thereof |
| CN111189182A (en) * | 2018-11-14 | 2020-05-22 | 青岛海尔空调器有限总公司 | Air conditioner and anti-freezing control method thereof |
| CN111189171B (en) * | 2018-11-14 | 2022-04-19 | 青岛海尔空调器有限总公司 | Air conditioner and anti-freezing control method thereof |
| CN111189182B (en) * | 2018-11-14 | 2022-04-19 | 青岛海尔空调器有限总公司 | An air conditioner and a control method for preventing freezing |
| CN112050370A (en) * | 2019-06-07 | 2020-12-08 | 青岛海尔空调器有限总公司 | Control method and control device for defrosting of air conditioner and air conditioner |
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| CN110553328A (en) * | 2019-09-09 | 2019-12-10 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
| WO2021103418A1 (en) * | 2019-11-27 | 2021-06-03 | 广东美的制冷设备有限公司 | Air conditioner and self-cleaning control method therefor and device thereof, and storage medium |
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| US12117192B2 (en) | 2019-11-27 | 2024-10-15 | Gd Midea Air-Conditioning Equipment Co., Ltd. | Air conditioner and self-cleaning control method therefor and device thereof, and computer readable storage medium |
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