CN110454916A - The defrosting method and air conditioner of air conditioner - Google Patents
The defrosting method and air conditioner of air conditioner Download PDFInfo
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- CN110454916A CN110454916A CN201910765338.9A CN201910765338A CN110454916A CN 110454916 A CN110454916 A CN 110454916A CN 201910765338 A CN201910765338 A CN 201910765338A CN 110454916 A CN110454916 A CN 110454916A
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- air conditioner
- temperature
- defrost
- outdoor unit
- preset temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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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)
- Human Computer Interaction (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of defrosting method of air conditioner and air conditioners, defrosting method includes recording between the compressor start T0-T1 of air conditioner, the temperature minimum value tmin of outdoor unit of the air conditioner, after the compressor operating T2 time of air conditioner, judge the temperature t of outdoor unit of the air conditioner, in t less than the first preset temperature m1, and tmin-t be greater than or equal to the first preset temperature difference Δ t1 when defrost, after the compressor operating T3 time of air conditioner, judge the temperature t of outdoor unit of the air conditioner, in t less than the second preset temperature m2, and tmin-t be greater than or equal to the second preset temperature difference Δ t2 when start defrost, during defrost, t, which is higher than, to be stopped stopping defrost when temperature m0.Defrosting method according to the present invention can enter defrost when air conditioner is started to work with higher defrost temperature, guarantee defrosting effect, though while working time of air conditioner extend the temperature for being lowered into defrost, guarantee defrost efficiency, realize power saving.
Description
Technical field
The present invention relates to air-conditioner fields, in particular to the defrosting method and air conditioner of a kind of air conditioner.
Background technique
In the related technology, when air conditioner heats work in winter, outdoor unit of the air conditioner is due to heat release, the surface of outdoor unit
Temperature, which can reach subzero, leads to frosting, and thick frost layer will lead to air constricted flow, influences the heating capacity of air conditioner.Cause
This, needs to carry out defrost to air conditioner.
In the defrosting method of existing air conditioner, the temperature condition for entering defrost is single, and stationary temperature condition is only arranged,
The coil temperature of the indoor unit of air conditioner and the temperature of outdoor unit are needed while measured simultaneously, and according to the coil pipe temperature of indoor unit
Degree and the difference of the temperature of outdoor unit judge whether air conditioner needs defrost.The defrosting method needs simultaneously in coil pipe and outdoor unit
Upper setting temperature measuring device, structure is complicated.In addition, in actual use, the practical defrosting effect of the defrosting method is simultaneously bad,
Especially in low temperature and the higher area of relative humidity is in use, outdoor unit still can frequent frosting, it is therefore desirable to existing
Defrosting method improves.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.It asks in view of the above technology
Topic, applicant passes through the study found that the frost of air conditioner is not only related with temperature, also related with humidity, when humidity is higher
When, it may occur in which frosting when temperature is higher.
For the studies above conclusion, the first aspect of the present invention proposes one kind can improve defrost at least to a certain extent
The defrosting method of effect.
The second aspect of the present invention proposes a kind of air conditioner that defrost is carried out using above-mentioned defrosting method.
The defrosting method according to a first aspect of the present invention, comprising: record between the compressor start T0-T1 of air conditioner
It is interior, the temperature minimum value tmin of the outdoor unit of the air conditioner；After the compressor operating T2 time of the air conditioner, described in judgement
The temperature t of outdoor unit of the air conditioner, in the t less than the first preset temperature m1, and tmin-t is greater than or equal to the first default temperature
Defrost when spending difference Δ t1；After the compressor operating T3 time of the air conditioner, the temperature t of the outdoor unit of the air conditioner is judged,
In the t less than the second preset temperature m2, and when tmin-t is greater than or equal to the second preset temperature difference Δ t2, starts defrost；Changing
During frost, the t, which is higher than, to be stopped stopping defrost when temperature m0；Wherein, T0 < T1 < T2 < T3, m2 < m1, Δ t2 > Δ t1.
The defrosting method according to a first aspect of the present invention, can be when air conditioner be started to work with higher defrost temperature
Degree enters defrost, guarantees defrosting effect, though while working time of air conditioner extend and be lowered into the temperature of defrost, guaranteeization
White efficiency realizes power saving.
Defrosting method according to the present invention, the defrosting method further include: the compressor operating T4 of the air conditioner
After time, the temperature t of the outdoor unit of the air conditioner is judged, open after the t is less than third preset temperature m3 duration T 10
Beginning defrost, wherein T3 < T4, m3 < m2.
Further, the defrosting method further include: after the compressor operating T5 time of the air conditioner, judge the sky
The temperature t for adjusting the outdoor unit of device, starts defrost after the t is less than the 4th preset temperature m4, wherein T3 < T4 < T5, m4 <
m3。
Further, the defrosting method further include: after the compressor operating T5 time of the air conditioner, judge the sky
The temperature t for adjusting the outdoor unit of device, starts defrost after the t is less than the 4th preset temperature m4, wherein T3 < T5, m4 < m2.
Optionally, the defrosting method further include: after the compressor operating T6 time of the air conditioner, judge outdoor temperature
The temperature t of n and the outdoor unit of the air conditioner, in the t3 less than the 5th preset temperature m5, and 0.5*n-t is default greater than third
Start defrost when temperature difference Δ t3.
Further, the T1 < T6 < T2.
Further, the T0=10min, the T1=15min, the T6=30min.
Further, the defrosting method further include: the temperature t for judging the outdoor unit of the air conditioner is less than in the t
Start defrost after 6th preset temperature m6 duration T 11.
Further, described m4=-15 DEG C.
The air conditioner according to a second aspect of the present invention, comprising: outdoor unit, compressor, defrost portion, timing module, control
Molding block and temperature-measuring module, the compressor, the timing module, the temperature-measuring module, the defrost portion with
The control module connection, the control module are suitable for starting the timing module while starting the compressor；Institute
When stating control module and receiving the timing signal of timing module feedback for T0 to T1 between, the control module is suitable for recording institute
State the temperature t minimum value tmin of the outdoor unit of temperature-measuring module measurement；The timing mould is received in the control module
When the timing signal of block feedback is greater than or equal to T2, the control module be suitable for judge the t less than the first preset temperature m1,
And tmin-t opens the defrost portion and carries out defrost when being greater than or equal to the first preset temperature difference Δ t1；In the control module
When receiving the timing signal of timing module feedback and being greater than or equal to T3, the control module is suitable for judging that the t is less than
Second preset temperature m2, and when tmin-t is greater than or equal to the second preset temperature difference Δ t2, it opens the defrost portion and carries out defrost；
The control module is suitable for closing the defrost portion when judging that the t is higher than and stops temperature m0 to stop defrost；Wherein, T0 <
T1 < T2 < T3, m2 < m1, Δ t2 > Δ t1.
The air conditioner according to a second aspect of the present invention, can be when air conditioner be started to work with higher defrost temperature
Into defrost, guarantee defrosting effect, though while working time of air conditioner extend the temperature for being lowered into defrost, guarantee defrost
Efficiency realizes power saving.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the flow chart of the defrosting method of the air conditioner of first embodiment of the invention；
Fig. 2 is the flow chart of the defrosting method of the air conditioner of second embodiment of the invention；
Fig. 3 is the flow chart of the defrosting method of the air conditioner of third embodiment of the invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is at least two, such as two
It is a, three etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected or can communicate with each other；It can be directly connected, can also indirectly connected through an intermediary, it can
To be the interaction relationship of connection or two elements inside two elements.For the ordinary skill in the art,
The specific meanings of the above terms in the present invention can be understood according to specific conditions.
With reference to the accompanying drawing and with reference to the specific embodiment description present invention.
Fig. 1-Fig. 3 is combined to describe the defrosting method of the embodiment of the present invention first.Air conditioner is when to indoor heating, due to sky
The indoor unit of device is adjusted to need to heating indoor, outdoor unit of the air conditioner is needed to outdoor heat absorption, at this time the temperature near outdoor unit
It is reduced in air conditioner heat-production, outdoor unit surface is easy frosting.It therefore, is usually in air conditioner system when air conditioner carries out defrost
It is carried out when hot.
As shown in Figure 1-Figure 3, the defrosting method of the embodiment of the present invention may include:
It records between the compressor start T0-T1 (T0 < T1) of air conditioner, the temperature minimum value of outdoor unit of the air conditioner
When tmin, tmin represent air conditioner and just start to work, the frosting situation of outdoor unit.
After the compressor operating T2 time of air conditioner (T1 < T2), judges the temperature t of outdoor unit of the air conditioner, be less than in t
First preset temperature m1, and tmin-t be greater than or equal to the first preset temperature difference Δ t1 when defrost.First preset temperature m1 is sky
It adjusts under atmospheric pressure locating for the region sold of device and annual relative humidity, when the compressor operating T2 time of air conditioner
Frosting temperature, m1 can be obtained by simulated experiment.
When t is less than m1, illustrate the temperature of outdoor unit at this time lower than frosting temperature of the region under annual relative humidity
Degree, outdoor unit are possible to frosting.At this point, if illustrating that outdoor unit exists when tmin-t is greater than or equal to the first preset temperature difference Δ t1
Temperature decline is obvious when running to T2 from T1, can determine whether out that outdoor unit frosting degree obviously increases at this time, and then can be to outdoor unit
Carry out defrost.Δ t1 can be judged by laboratory experiment, that is, under testing after the compressor operating T2 time of air conditioner, experiment
The temperature gap that must carry out frosting that personnel are obtained by observing outdoor unit surface frosting situation.
After the compressor operating T3 time of air conditioner (T2 < T3), judges the temperature t of outdoor unit of the air conditioner, be less than in t
Second preset temperature m2 (m2 < m1), and tmin-t be greater than or equal to the second preset temperature difference Δ t2 (Δ t2 > Δ t1) when start
Defrost.Under atmospheric pressure locating for the region that second preset temperature m2 is sold by air conditioner and annual relative humidity, work as sky
The frosting temperature of the compressor operating T3 time of device is adjusted, m2 can be obtained by simulated experiment.
When t is less than m2, illustrate the temperature of outdoor unit at this time lower than frosting temperature of the region under annual relative humidity
Degree, outdoor unit are possible to frosting.At this point, if illustrating that outdoor unit exists when tmin-t is greater than or equal to the second preset temperature difference Δ t2
Temperature decline is obvious when running to T3 from T2, can determine whether out that outdoor unit frosting degree obviously increases at this time, and then can be to outdoor unit
Carry out defrost.Δ t2 can be judged by laboratory experiment, that is, under testing after the compressor operating T3 time of air conditioner, experiment
The temperature gap that must carry out frosting that personnel are obtained by observing outdoor unit surface frosting situation.
During defrost, t is higher than when stopping temperature m0, illustrates that the frosting of outdoor unit surface has been dissolved to can work normally
Degree, at this time air conditioner stop defrost.M0 can be judged by laboratory experiment, that is, test lower air conditioner in defrost, experiment
The temperature value that can stop defrost that personnel are obtained by observing outdoor unit surface frosting situation.
Different defrost temperature is arranged by the different time to work in air conditioner for defrosting method according to an embodiment of the present invention
Degree condition can make outdoor unit in higherization when air conditioner is started to work (after t 2) by the way that higher m1 is arranged
White temperature enters defrost, guarantees defrosting effect, though while working time of air conditioner extend the temperature for being lowered into defrost, protect
Defrost efficiency is demonstrate,proved, realizes power saving.
In some optional embodiments of the invention, as shown in Figure 1-Figure 3, defrosting method further include: the pressure of air conditioner
Contracting machine works on (T3 < T4) after the T4 time, judges the temperature t of outdoor unit of the air conditioner, is less than third preset temperature m3 in t
(under atmospheric pressure locating for the region that third preset temperature m3 is sold by air conditioner and annual relative humidity, work as air conditioner
The compressor operating T4 time frosting temperature, m3 can obtain by simulated experiment, m3 < m2) duration T 10 when, explanation
The frosting of outdoor unit is serious at this time, and air conditioner starts defrost.Since T4 time and T1 gap are larger, the reference value of tmin is not
Greatly, the temperature difference condition of no setting is required at this time tmin-t, to simplify decision logic.Specifically, T10 can be 3min.
Specifically, defrosting method further include: after the compressor operating T5 time of air conditioner (T4 < T5 or T3 < T5), judgement
The temperature t of outdoor unit of the air conditioner starts defrost less than the 4th preset temperature m4 (m4 < m3) in t afterwards, while after the T5 time,
Since the compressor operating time is longer, and the frosting of there is a strong possibility more amount, it no longer needs to that t is waited to be less than preset temperature at this time
Duration.Since T5 time and T1 gap are larger, the reference value of tmin is little, the temperature of no setting is required at this time tmin-t
Poor condition, to simplify decision logic.In some specific embodiments, m4=-15 DEG C.
Optionally, defrosting method further include: after the compressor operating T6 time of air conditioner, judge outdoor temperature n and air-conditioning
The temperature t of the outdoor unit of device, such as the outdoor temperature sensor for measuring outdoor temperature can be set at positions such as outdoor units
Equal devices.In t3 less than the 5th preset temperature m5, and when 0.5*n-t is greater than third preset temperature difference Δ t3, starts defrost, wherein
Under atmospheric pressure locating for the region that 5th preset temperature m5 is sold by air conditioner and annual relative humidity, when air conditioner
The frosting temperature of compressor operating T6 time, m5 can be obtained by simulated experiment.Third preset temperature difference Δ t3 is air conditioner
Under atmospheric pressure locating for the region sold and annual relative humidity, when the frosting of outdoor unit is serious, outdoor unit and outdoor
The temperature difference between temperature, Δ t3 can be obtained by simulated experiment.
The defrost of air conditioner item can be obtained by outdoor temperature, outdoor unit temperature simultaneously as a result, the judgement of defrost degree
It is more accurate.
Specifically, T1 < T6 < T2.Defrost Rule of judgment i.e. after the compressor operating T6 time of air conditioner is recording
Obtain after tmin, in order to accurately obtain tmin, convenient under the present embodiment other conditions when defrost to the value of tmin-t into
Row effectively reference.Meanwhile the judgement item of the defrost Rule of judgment and outdoor unit temperature after the compressor operating T6 time of air conditioner
Part carries out simultaneously, as long as the condition met in the two carries out defrost, avoids being that outdoor unit frosting seriously influences work.
Specifically, T0=10min, T1=15min, T6=30min.In other words, the acquirement of tmin is the pressure in air conditioner
Contracting machine starts between 10min-15min, to run i.e. measurement tmin, while the compressor work of air conditioner at the beginning in air conditioner
Defrost Rule of judgment after making the T6 time is also just to have run to start to carry out soon in compressor, to carry out defrost in time.
Specifically, defrosting method further include: the temperature t for judging outdoor unit of the air conditioner, in t less than the 6th preset temperature m6
Start defrost after duration T 11.The Rule of judgment is suitable for colder region (such as winter average annual temperature is -10 as a result,
DEG C region below), atmospheric pressure and annual locating for the region that the 6th preset temperature m6 is sold by air conditioner are relatively wet
Frosting temperature under degree, m6 can be obtained by simulated experiment.For example, T11 can be 3min.
Specifically, air conditioner is at colder region (such as winter average annual temperature is in -10 DEG C of regions below), can be with
M1 and m0 is improved to (such as while improving 4 DEG C) simultaneously, and improves defrosting efficiency (such as improving two-stage defrosting efficiency), with enhancing
Defrosting effect extends defrosting time.
It should be noted that Fig. 1 show hot area (such as temperature in winter is in 10 DEG C or more of area, such as
The low latitudes such as the Middle East) in air conditioner defrosting method.Fig. 2 shows warm area, (such as temperature in winter is -5
The mid latitudes such as area, such as Beijing between DEG C -10 DEG C) in air conditioner defrosting method.Fig. 3 shows severe cold area
The defrosting method of air conditioner in (such as temperature in winter is in high latitude areas such as -5 DEG C of areas below, such as Northern Europe).
The application further include such as the other embodiments other than Fig. 1-Fig. 3, specific defrost condition can with according to local temperature and humidity into
Row is adaptively adjusted.
The air conditioner of the embodiment of the present invention is described below.
The air conditioner of the embodiment of the present invention, comprising: outdoor unit, compressor, defrost portion, timing module, control module and temperature
Measurement module is spent, compressor, timing module, temperature-measuring module, defrost portion are connect with control module, and control module is suitable for
Start timing module while starting compressor.
When control module receives the timing signal of timing module feedback between T0 to T1, control module is suitable for record temperature
Spend the temperature t minimum value tmin of the outdoor unit of measurement module measurement.
When the timing signal that control module receives timing module feedback is greater than or equal to T2, control module is suitable for judging
T opens defrost portion less than the first preset temperature m1, and when tmin-t is greater than or equal to the first preset temperature difference Δ t1
Frost.
When the timing signal that control module receives timing module feedback is greater than or equal to T3, control module is suitable for judging
T opens defrost portion less than the second preset temperature m2, and when tmin-t is greater than or equal to the second preset temperature difference Δ t2
Frost.
Control module is suitable for closing defrost portion when judging that t is higher than and stops temperature m0 to stop defrost.Wherein, T0 < T1 <
T2 < T3, m2 < m1, Δ t2 > Δ t1.
Air conditioner according to an embodiment of the present invention, can be when air conditioner be started to work with higher defrost temperature entrance
Frost guarantees defrosting effect, though while working time of air conditioner extend and be lowered into the temperature of defrost, guarantee defrost efficiency,
Realize power saving.
Specifically, defrost portion may include defrost circuit, and timing module can be timer, and control module can be control
Device, temperature-measuring module can be the temperature sensor for being mounted on outdoor unit (such as being mounted on the condenser pipe of outdoor unit).
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
What can be combined in any suitable manner in one or more embodiment or examples.In addition, those skilled in the art can say this
Different embodiments or examples described in bright book are engaged and are combined.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of defrosting method of air conditioner, the air conditioner include outdoor unit, and the compressor in outdoor unit, special
Sign is, comprising:
It records between the compressor start T0-T1, the temperature minimum value tmin of the outdoor unit；
After the compressor operating T2 time, the temperature t of the outdoor unit is judged, when the t is less than the first preset temperature m1,
And tmin-t controls the outdoor unit and opens defrost when being greater than or equal to the first preset temperature difference Δ t1；
After the compressor operating T3 time, the temperature t of the outdoor unit is judged, when the t is less than the second preset temperature m2,
And tmin-t controls the outdoor unit and opens defrost when being greater than or equal to the second preset temperature difference Δ t2；
After the outdoor unit opens defrost, judges whether the t is higher than and stop temperature m0, if so, controlling the outdoor unit
Stop defrost；
Wherein, T0 < T1 < T2 < T3, m2 < m1, Δ t2 > Δ t1.
2. the defrosting method of air conditioner according to claim 1, which is characterized in that further include: the compressor operating T4
After time, the temperature t of the outdoor unit is judged, after the t is less than third preset temperature m3 duration T 10, described in control
Outdoor unit opens defrost, wherein T3 < T4, m3 < m2.
3. the defrosting method of air conditioner according to claim 2, which is characterized in that further include: in the compressor of air conditioner
Work after the T5 time, judge the temperature t of the outdoor unit of the air conditioner, if the t less than the 4th preset temperature m4, described in control
Outdoor unit opens defrost, wherein T3 < T4 < T5, m4 < m3.
4. the defrosting method of air conditioner according to claim 1, which is characterized in that further include: it is compressed in the air conditioner
Machine worked after the T5 time, judged the temperature t of the outdoor unit of the air conditioner, if the t controls institute less than the 4th preset temperature m4
It states outdoor unit and opens defrost, wherein T3 < T5, m4 < m2.
5. the defrosting method of air conditioner according to claim 1 or 4, which is characterized in that further include: the pressure of the air conditioner
Contracting machine worked after the T6 time, judged the temperature t of outdoor temperature n and the outdoor unit of the air conditioner, if the t3 is pre- less than the 5th
If temperature m5, and 0.5*n-t is greater than third preset temperature difference Δ t3, controls the outdoor unit and opens defrost.
6. the defrosting method of air conditioner according to claim 5, which is characterized in that the T1 < T6 < T2.
7. the defrosting method of air conditioner according to claim 5, which is characterized in that the T0=10min, the T1=
15min, the T6=30min.
8. the defrosting method of air conditioner according to claim 1, which is characterized in that further include: judge the air conditioner chamber
The temperature t of outer machine controls the outdoor unit and opens defrost when the t is less than the 6th preset temperature m6 duration T 11.
9. the defrosting method of air conditioner according to claim 4, which is characterized in that described m4=-15 DEG C.
10. a kind of air conditioner characterized by comprising outdoor unit, compressor, defrost portion, timing module, control module and temperature
Spend measurement module, the compressor, the timing module, the temperature-measuring module, the defrost portion with the control mould
Block connection, the control module are suitable for starting the timing module while starting the compressor；
When the control module receives the timing signal of the timing module feedback between T0 to T1, the control module is suitable
In the temperature t minimum value tmin for the outdoor unit for recording the temperature-measuring module measurement；
When the timing signal that the control module receives the timing module feedback is greater than or equal to T2, the control module is suitable
In judging that the t less than the first preset temperature m1, and when tmin-t is greater than or equal to the first preset temperature difference Δ t1, opens institute
It states defrost portion and carries out defrost；
When the timing signal that the control module receives the timing module feedback is greater than or equal to T3, the control module is suitable
In judging that the t less than the second preset temperature m2, and when tmin-t is greater than or equal to the second preset temperature difference Δ t2, opens institute
It states defrost portion and carries out defrost；
The control module is suitable for closing the defrost portion when judging that the t is higher than and stops temperature m0 to stop defrost；
Wherein, T0 < T1 < T2 < T3, m2 < m1, Δ t2 > Δ t1.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910765338.9A CN110454916B (en) | 2019-08-19 | 2019-08-19 | Defrosting method of air conditioner and air conditioner |
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| CN201910765338.9A CN110454916B (en) | 2019-08-19 | 2019-08-19 | Defrosting method of air conditioner and air conditioner |
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| CN110454916A true CN110454916A (en) | 2019-11-15 |
| CN110454916B CN110454916B (en) | 2022-03-25 |
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