CN109323370A - Air-conditioning and its defrosting method and device - Google Patents
Air-conditioning and its defrosting method and device Download PDFInfo
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- CN109323370A CN109323370A CN201811163189.0A CN201811163189A CN109323370A CN 109323370 A CN109323370 A CN 109323370A CN 201811163189 A CN201811163189 A CN 201811163189A CN 109323370 A CN109323370 A CN 109323370A
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- air
- conditioning
- temperature
- frosting
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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
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
- F24F2110/22—Humidity of the outside air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of air-conditioning and its defrosting methods and device, comprising the following steps: when running under the air-conditioning is in heating mode, obtains the second temperature of the first temperature and the first humidity and indoor heat exchanger air inlet at outdoor heat exchanger refrigerant exit；According to first temperature, the second temperature and first humidity, identify that the air-conditioning is in frosting state, and detect to the air conditioning capacity of the air-conditioning in preset duration；According to the air conditioning capacity detected, judge whether the current frosting velocity of the air-conditioning exceeds preset frosting velocity；When the current frosting velocity exceeds preset frosting velocity, it then controls the air-conditioning and enters defrost process, realize and frosting situation is judged according to air conditioning capacity, so as to timely enter defrost process, in the case where guaranteeing air-conditioning heating effect, defrosting effect is effectively improved.
Description
Technical field
The present invention relates to air-conditioning technical field more particularly to a kind of air-conditionings and its defrosting method and device.
Background technique
In air-conditioning heating operational process, outdoor heat exchanger is run as condenser, at this point, since outdoor temperature is too low, room
External heat exchanger carries out heat absorption condensation and is easy to cause outdoor heat exchanger frosting, and therefore, it is necessary to carry out defrosting operation to outdoor heat exchanger.
In the related technology, defrost process is carried out in order to control air-conditioning, whether is the usual temperature by judging outdoor heat exchanger
Reach preset temperature, to judge whether air-conditioning carries out defrost.But the relevant technologies the problem is that, used due to air-conditioning
Environmental factor is different, is difficult the decision condition of unified defrosting operation, causes appearance or too early entranceization in air-conditioning use process
Frost operation, causes because reducing air-conditioning heating efficiency, and enters defrosting operation the problem of influence user experience or too late, causes
Outdoor heat exchanger frosting is blocked up, and the time of complete defrost is longer, causes the fluctuation of user's sendible temperature larger, simultaneously as frosting
Blocked up, if defrost is not thorough, the problem for being also easy to cause operation of air conditioner heating time longer heating effect poorer, or even damage are empty
Adjust device.
Summary of the invention
The embodiment of the present application solves being unable to judge accurately in the prior art by providing a kind of defrosting method of air-conditioning
The problem of white opportunity, is realized and judges frosting situation according to temperature and humidity, so as to timely enter defrost process, is guaranteeing sky
In the case where modulating thermal effect, defrosting effect is effectively improved.
The embodiment of the present application provides a kind of defrosting method of air-conditioning, comprising the following steps: is in heating in the air-conditioning
When being run under mode, obtains the first temperature and the first humidity and indoor heat exchanger at outdoor heat exchanger refrigerant exit and enter the wind
The second temperature of mouth；According to first temperature, the second temperature and first humidity, identify that the air-conditioning is in knot
White state, and the air conditioning capacity of the air-conditioning in preset duration is detected；According to the air conditioning capacity detected, sentence
Whether the current frosting velocity of the air-conditioning that breaks exceeds preset frosting velocity；When the current frosting velocity is beyond preset
When frosting velocity, then controls the air-conditioning and enter defrost process.
According to one embodiment of present invention, the first temperature sensor, are provided on the outdoor heat exchanger of the air-conditioning
Two temperature sensors and the first humidity sensor；First temperature sensor and first humidity sensor are arranged described
At the refrigerant exit of outdoor heat exchanger, the air inlet of the outdoor heat exchanger is arranged in the second temperature sensor, described
Method further include: the first temperature, the second temperature of the second temperature sensor of first temperature sensor are obtained, and
First humidity of first humidity sensor.
According to one embodiment of present invention, described according to first temperature, second temperature and first humidity, sentence
The air-conditioning that breaks whether frosting, comprising: according to first temperature, obtain the dew-point temperature under first humidity；It obtains
Temperature difference between the second temperature and the dew-point temperature, if the temperature difference reaches preset value, it is determined that the sky
It mediates in frosting state.
According to one embodiment of present invention, the air conditioning capacity that the basis detects, judges the knot of the air-conditioning
Whether white speed exceeds preset frosting velocity, comprising: according to the air-conditioning energy at arbitrary neighborhood moment in the preset duration
Power, judges whether the air conditioning capacity is decaying；If the air conditioning capacity is being decayed, it is current to obtain the air conditioning capacity
The rate of decay at moment；The rate of decay at the current time is compared with rate of decay threshold value, if when described current
The rate of decay at quarter is greater than the rate of decay threshold value, determines the current frosting velocity beyond the preset frosting speed
Degree.
According to one embodiment of present invention, the rate of decay by the current time and rate of decay threshold value carry out
Before comparing, further includes: according to the model of the air-conditioning, obtain the rate of decay threshold value of the air-conditioning.
According to one embodiment of present invention, the air-conditioning energy according to the arbitrary neighborhood moment in the preset duration
Power, judges whether the air conditioning capacity is decaying, comprising: continues the air conditioning capacity for comparing adjacent moment, if previous
The air conditioning capacity at moment is higher than the air conditioning capacity of later moment in time, determines that the air conditioning capacity is being decayed.
According to one embodiment of present invention, the rate of decay for obtaining the air conditioning capacity current time, comprising: obtain
Take the pad value of the air conditioning capacity at current time and the air conditioning capacity of previous moment；According to the pad value with it is previous
The pad value at moment does difference, obtains the rate of decay at the current time.
According to one embodiment of present invention, the control air-conditioning enters after defrost process, further includes: detection
The temperature of temperature detecting point on the air-conditioning judges whether to need to exit defrost process according to the temperature, described when judging
When air-conditioning needs to exit defrost process, then controls the air-conditioning and exit the defrost process；Alternatively, detecting the air conditioning capacity
Variation, according to the variation of the air conditioning capacity, judges whether to need to exit defrost process, when judging that air-conditioning needs exit
When defrost process, then controls the air-conditioning and exit the defrost process.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
1, when air-conditioning is in frosting state, frosting situation is judged according to air conditioning capacity, defrost process can be timely entered,
In the case where guaranteeing air-conditioning heating effect, defrosting effect is effectively improved.
2, judged by dew-point temperature, temperature and humidity can be subjected to interval division, that is, distinguish easy frosting section and not
The calculation amount of air-conditioning is reduced to effectively simplify defrost decision logic in easy frosting section.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the air-conditioner system of one embodiment of the invention；
Fig. 2 is the structural schematic diagram of the air conditioner control system of one embodiment of the invention；
Fig. 3 is the flow chart of the defrosting method of the air-conditioning of the embodiment of the present invention；
Fig. 4 is the flow chart of the defrosting method of the air-conditioning of one embodiment of the invention；
Fig. 5 is the block diagram of the defrosting device of the air-conditioning of the embodiment of the present invention；
Fig. 6 is the block diagram of the defrosting device of the air-conditioning of one embodiment of the invention；
Fig. 7 is the block diagram of the air-conditioning of the embodiment of the present invention.
Specific embodiment
The present invention proposes a kind of change of air-conditioning to solve the problems, such as to be unable to judge accurately defrost opportunity in the prior art
White method determines the current knot of air-conditioning detected by the air conditioning capacity to air-conditioning when air-conditioning is in frosting state
White speed judges whether to enter defrost process according to air-conditioning frosting velocity, so as to timely enter defrost process, is guaranteeing sky
In the case where modulating thermal effect, defrosting effect is effectively improved.
In order to better understand the above technical scheme, the exemplary reality of the disclosure is more fully described below with reference to accompanying drawings
Apply example.Although showing the exemplary embodiment of the disclosure in attached drawing, it being understood, however, that may be realized in various forms this public affairs
It opens and should not be limited by the embodiments set forth herein.It is to be able to thoroughly understand this on the contrary, providing these embodiments
It is open, and the scope of the present disclosure can be fully disclosed to those skilled in the art.
In order to better understand the above technical scheme, in conjunction with appended figures and specific embodiments to upper
Technical solution is stated to be described in detail.
Firstly, it is necessary to which explanation, the defrosting method of the air-conditioning of the embodiment of the present invention, are for following air-conditioner systems
With air conditioner control system.
Specifically, as shown in Figure 1, the present invention is based on air-conditioner system 100 include: compressor 1, four-way valve 2, outdoor wind
Machine 31, outdoor heat exchanger 32, throttle part 4, indoor fan 51, indoor heat exchanger 52, wherein indoor fan 51 and indoor heat exchange
Device 52 is correspondingly arranged, and is set to indoor, and outdoor fan 31 and outdoor heat exchanger 32 are correspondingly arranged, and are set to outside.
Wherein, the outlet of outdoor heat exchanger 32 is connected by throttle part 4 with the import of indoor heat exchanger 52, indoor heat exchange
The outlet of device 52 is connected with the first end of four-way valve 2, and the second end of four-way valve 2 is connected with the entrance of compressor 1, four-way valve 2
Third end is connected with the outlet of compressor 1, and the 4th end of four-way valve 2 is connected with the entrance of outdoor heat exchanger 32.
The defrosting method of air-conditioning proposed by the present invention as a result, is based on above-mentioned air-conditioner system, can pass through the biography of refrigerant
It passs, realizes the heating operation of air-conditioning.Wherein, outdoor heat exchanger 32 also have air inlet so that outdoor heat exchanger 32 air-conditioning into
When row heating, it can be condensed by heat absorption, that is, the heat that outdoor heat exchanger 32 absorbs outside air is condensed.
Further, multiple temperature sensors and a humidity sensor are also provided on air-conditioner system 100.For example,
Air-conditioner system 100 can include at least the first temperature sensor 61, second temperature sensor 62, third temperature sensor 63 and the
One humidity sensor 70, wherein the first temperature sensor 61 may be disposed at the exit of outdoor heat exchanger 32, to change outside sensing chamber
The outlet temperature of hot device 32, second temperature sensor 62 may be disposed at the air inlet of outdoor heat exchanger 32, to detect outdoor heat exchange
Device 32 carries out suction temperature when condensation, and third temperature sensor 63 may be disposed at the exhaust outlet of compressor 1, cold to detect
Matchmaker enters temperature before outdoor heat exchanger 32 after compressor 1 compresses, and the first humidity sensor 70 may be disposed at outdoor
On the shell of heat exchanger 32, to detect the relative humidity of current outdoor.
Further, air-conditioner system 100 can also be further in the inlet of outdoor heat exchanger 32 and internal difference
4th temperature sensor 64 and the 5th temperature sensor 65 are set；Indoors the inlet, exit, inside of heat exchanger 52 and
The 6th temperature sensor 66, the 7th temperature sensor 67, the 8th temperature sensor 68 and the 9th can be also respectively arranged on shell
Temperature sensor 69.It should be understood that temperature sensor can also be provided on any test point for needing temperature collection, such as
On the entrance and shell of compressor etc..
It should be noted above-mentioned air-conditioner system, can also be controlled by air conditioner control system, wherein such as
Shown in Fig. 2, air conditioner control system 200, it may include: obtain module 21, analysis feedback module 22, control module 23, transmission mould
Block 24 and memory module 25.
Wherein, obtaining module 21 can be used for obtaining the real-time parameter of air conditioner, for example, the current operating rate of air conditioner,
Air conditioning capacity etc.；Analysis feedback module 22 is connected with module 21 is obtained, and analysis feedback module 22 can be obtained by obtaining module 21
Data, and carry out analysis and generate the status information of air conditioner, and then feed back to transmission display module 24 and/or control module 23；
Transmission module 24 is connected with analysis feedback module 22, can be used for being communicated with user terminal, will be by analyzing feedback module
The 22 air-conditioning state information obtained are sent to the user terminal, and receive the control instruction of user terminal feedback, wherein user terminal
Family can be able to use for mobile terminal, computer terminal or cloud etc. to receive the status information of current air conditioner and/or send control
The terminal of instruction；Control module 23 can be connected with analysis feedback module 22 and transmission module 24 respectively, to feed back mould according to analysis
The status information that block 22 is sent controls air conditioner, and/or the control instruction fed back according to transmission module 24 is to air conditioner
It is controlled；Memory module 25 can be connected with acquisition module 21 and transmission module 24 respectively, for storing the real-time ginseng of air conditioner
Several and control instruction.
That is, air-conditioner system 100 can be run under the control of air conditioner control system 200, including control
System 100 carries out heating operation under the control of air conditioner control system 200.It is outdoor in 100 heating process of air-conditioning system
Heat exchanger 32 absorbs heat as condenser, and since winter outdoor temperature is lower, knot is easy in 32 condensation process of outdoor heat exchanger
Frost, and then influence the effect that air-conditioning further heats.
Based on this, the embodiment of the present invention proposes a kind of defrosting method of air-conditioning.
Embodiment one
Fig. 3 is the flow chart of the defrosting method of air-conditioning of the present invention.As shown in figure 3, the defrost of the air-conditioning of the embodiment of the present invention
Method, comprising the following steps:
S101: when being run under air-conditioning is in heating mode, obtain outdoor heat exchanger refrigerant exit at the first temperature and
The second temperature of first humidity and indoor heat exchanger air inlet.
Wherein, air-conditioning is under heating mode and runs, and the first temperature sensor, are provided on the outdoor heat exchanger of air-conditioning
Two temperature sensors and the first humidity sensor；Outdoor heat exchanger is arranged in first temperature sensor and the first humidity sensor
At refrigerant exit, set for detecting the first temperature at outdoor heat exchanger refrigerant exit and the first humidity, second temperature sensor
The air inlet in outdoor heat exchanger is set, for detecting the second temperature of outdoor heat exchanger air inlet.Wherein, four-way valve can be passed through
State or the outlet temperature of outdoor heat exchanger determine whether air-conditioning is in heating mode.
S102: according to the first temperature, second temperature and the first humidity, identify that air-conditioning is in frosting state, and to default
The air conditioning capacity of air-conditioning in duration is detected.
It should be noted that being based on air-conditioner system above-mentioned, for air-conditioning in heating process, outdoor heat exchanger can be because
Condensation and frosting, therefore, it is necessary to whether be in frosting state to air-conditioning to judge, with air-conditioning be in frosting state it
After judge whether to need to carry out defrost.
It should also be noted that, if air-conditioner outdoor unit frosting, can make due to needing to absorb heat when air-conditioner outdoor unit is condensed
Temperature near air-conditioner outdoor unit further decreases, that is, the efficiency that outdoor heat exchanger carries out heat absorption condensation reduces, and then leads to room
Interior heating capacity can also further decrease, and therefore, can be judged by the temperature to air-conditioning each position to determine whether air-conditioning is located
In frosting state, also it can determine whether air-conditioning is in frosting state by heating capacity in air conditioning chamber.
Wherein, since frosting also can not necessarily occur in a heating mode for air conditioner, for example, runing time is shorter, or
Outdoor temperature is not enough to frosting etc., therefore, can be when rear and outdoor temperature is lower for a period of time for operation of air conditioner, and starting is to air-conditioning
The no judgement in frosting state, with energy saving.
For example, after operation of air conditioner can be run 7-15 minutes for a period of time for air-conditioning heating.It then can be true according to the first temperature
It is lower to determine outdoor temperature, for example, determining that outdoor temperature is lower when the first temperature is less than 1 DEG C, needs to carry out defrost judgement.
According to one embodiment of present invention, according to the first temperature, second temperature and the first humidity, judge whether air-conditioning is tied
Frost, comprising: according to the first temperature, obtain the dew-point temperature under the first humidity, obtain the temperature between second temperature and dew-point temperature
It is poor to spend, if temperature difference reaches preset value, it is determined that air-conditioning is in frosting state.
Specifically, the dew-point temperature under the first humidity can be obtained by way of tabling look-up plus calculating according to the first temperature,
Then judge temperature difference between the second temperature of second temperature sensor and dew-point temperature, if temperature difference does not press preset value,
Then determine air-conditioning current state will not frosting, if temperature difference reaches preset value, it is determined that air-conditioning is in frosting state.
Wherein, dew-point temperature is the temperature that vaporous water is converted into liquid water, in embodiments of the present invention, due to outdoor temp
Spend lower, vaporous water can liquefy in condensation temperature, and therefore, dew-point temperature can also be condensation temperature.
As a result, by dew-point temperature judge, temperature and humidity can be subjected to interval division, that is, distinguish easy frosting section and
It is not easy frosting section, to effectively simplify defrost decision logic, reduces the calculation amount of air-conditioning.
It should be understood that in embodiments of the present invention, air conditioning capacity can be indoor heating amount, it may also include sensible heat energy
Power, latent heat ability.Wherein, air conditioning capacity is related to the temperature of multiple temperature detecting points and compressor frequency, in other words, can be by more
The temperature and compressor frequency of a temperature sensor detection are obtained by calculating.
S103: according to the air conditioning capacity detected, judge whether the current frosting velocity of air-conditioning exceeds preset frosting speed
Degree.
It should be noted that there is the frosting with predominantly outdoor heat exchanger of air conditioner biggish to the influence of fading of air conditioning capacity
Situation therefore can be by detecting air conditioning capacity, to judge the current frosting velocity of air-conditioning.
Specifically, as shown in figure 4, according to the air conditioning capacity detected, it is default to judge whether the frosting velocity of air-conditioning exceeds
Frosting velocity, comprising:
S201: according to the air conditioning capacity at arbitrary neighborhood moment in preset duration, judge whether air conditioning capacity is decaying.
Specifically, continue the air conditioning capacity for comparing adjacent moment, if the air conditioning capacity of previous moment is higher than later moment in time
Air conditioning capacity, determine that air conditioning capacity is being decayed.
S202: if air conditioning capacity is being decayed, the rate of decay at air conditioning capacity current time is obtained.
S203: the rate of decay at current time is compared with rate of decay threshold value, if the decaying speed at current time
Rate is greater than rate of decay threshold value, determines current frosting velocity beyond preset frosting velocity.
Wherein, according to the model of air-conditioning, the rate of decay threshold value of air-conditioning is obtained.
That is, judging that later moment in time rate of decay is after the rate of decay at each moment in acquisition preset duration
The no rate of decay greater than previous moment shows room if the rate of decay of later moment in time is greater than the rate of decay of previous moment
The frosting state of external heat exchanger, which has begun, influences air-conditioning entirety heating efficiency, then further judges whether rate of decay is greater than
Rate of decay threshold value, to determine defrost opportunity, i.e., if rate of decay is greater than rate of decay threshold value, it is determined that current frosting speed
Degree is beyond default frosting velocity.
For example, preset duration can be divided into multiple moment, for example, when the first moment X1, the second moment X2, third
Carve X3 ..., the n-th moment Xn, each moment corresponding heating capacity be respectively A, B, C ..., then can obtain in the first preset duration
The attenuation of the heating capacity at each moment, for example, the attenuation at the second moment is (B-A), the attenuation at third moment is (C-
), and so on B the attenuation that can get any time in preset duration, since preset duration is divided, then each moment
Attenuation, the rate of decay of as each moment heating capacity.It should be understood that rate of decay can also be by summing or asking poor
Equal other methods obtain.
Then, judge whether the rate of decay of any later moment in time in preset duration is greater than the decaying speed of its previous moment
Rate, for example, judging whether the rate of decay (C-B) of third moment X3 is greater than the rate of decay (B-A) at the second moment, if third
The rate of decay of moment X3 is less than or equal to the rate of decay of the second moment X2, then illustrates the indoor heating amount phase of third moment X3
The indoor heating amount of second moment X2 is not reduced or is at the uniform velocity reduced, i.e., the frosting degree of outdoor heat exchanger is not to air conditioning capacity
It has an impact, persistently rate of decay is judged at this time, if the rate of decay of third moment X3 is greater than the second moment X2's
Rate of decay then illustrates that the indoor heating amount of third moment X3 is significantly reduced relative to the indoor heating amount of the second moment X2, i.e.,
The frosting degree of outdoor heat exchanger has affected air conditioning capacity, judges that the frosting of outdoor heat exchanger of air conditioner has degradating trend, needs
Further to judge whether frosting velocity exceeds preset frosting velocity.
It should be noted that since the intrinsic parameter of the air-conditioning of different model is different air-conditioning can be obtained according to the model of air-conditioning
Rate of decay threshold value, to determine whether current frosting velocity exceeds preset frosting velocity by rate of decay threshold value, prevent
Only control air-conditioning carries out the opportunity of defrost too early or too late.Specifically, judge whether the rate of decay at current time is greater than decaying
Rate-valve value, to determine that the frosting degree of outdoor heat exchanger has seriously affected air conditioning capacity, i.e., when current rate of decay
When less than or equal to rate of decay threshold value, current frosting velocity is without departing from preset frosting velocity, when current rate of decay
When greater than rate of decay threshold value, current frosting velocity exceeds preset frosting velocity.
As a result, by the rate of decay of detection different moments, and it is gradually increased in rate of decay and is greater than default decaying threshold
When value, determine that frosting velocity beyond preset frosting velocity, can accurately determine air-conditioning system when air-conditioning heating is run
Frosting situation enters defrost process for air-conditioning and provides Data safeguard.
S104: it when current frosting velocity exceeds preset frosting velocity, then controls air-conditioning and carries out defrost process.
It should be understood that when current frosting velocity is without departing from preset frosting velocity, though outdoor heat exchanger has knot
Frost, but frosting velocity is smaller or frosting is relatively thin is not enough to start defrosting operation, and it is too early to will appear defrost if starting defrosting operation
The problem of heating capacity influences user experience is reduced, when current frosting velocity exceeds preset frosting velocity, outdoor heat exchanger
Frosting it is more serious, at this time carry out defrost can not only save the defrost time, additionally it is possible to the heating efficiency for guaranteeing air-conditioning, because
This then controls air-conditioning and enters defrost process when judging current frosting velocity beyond preset frosting velocity.
Further, control air-conditioning enters after defrost process, further includes: the temperature of temperature detecting point on detection air-conditioning,
Judged whether to need to exit defrost process according to temperature, when judging that air-conditioning needs to exit defrost process, then controls air-conditioning and move back
Defrost process out；Alternatively, the variation of detection air conditioning capacity judges whether to need to exit defrost stream according to the variation of air conditioning capacity
Journey then controls air-conditioning and exits defrost process when judging that air-conditioning needs to exit defrost process.
It should be noted that after air-conditioning enters defrost process, in order to energy saving, guarantee the heating needs of user, need
It to control air-conditioning in time after defrost and exit defrost process.
Specifically, detect air-conditioning on temperature detecting point temperature, such as on aforementioned air-conditioner system it is any one or more
The temperature of temperature detecting point, judges whether the temperature of temperature detecting point reaches preset temperature, if it is, determining that air-conditioning needs move back
Defrost process out, control air-conditioning exit defrost process；If it is not, then determining that air-conditioning continues there is still a need for defrost, control air-conditioning is carried out
Defrost.In addition, also detectable air conditioning capacity judges whether to need to exit defrost process, i.e., in sky according to the variation of air conditioning capacity
Tune ability exits defrost process when being gradually recovered.
In conclusion the defrosting method of the air-conditioning of the embodiment of the present invention, obtains the first temperature, second temperature and first first
Humidity, and according to the first temperature, second temperature and the first humidity, judge whether air-conditioning is in frosting state, is in system in air-conditioning
When heat pattern runs and is in frosting state, the air conditioning capacity of air-conditioning in the first preset duration is detected, then according to inspection
The air conditioning capacity measured, judges whether the current frosting velocity of air-conditioning exceeds preset frosting velocity, when current frosting velocity
When beyond preset frosting velocity, then controls air-conditioning and enter defrost process.The defrost side of the air-conditioning of the embodiment of the present invention as a result,
Method can judge that frosting situation is judged according to air conditioning capacity, to timely enter defrost process, guarantee air-conditioning heating effect
In the case where, effectively improve defrosting effect.
Based on the same inventive concept, the embodiment of the invention also provides the corresponding system of method in embodiment one, see implementation
Example two.
Embodiment two
Fig. 5 is the block diagram of the defrosting device of the air-conditioning of the embodiment of the present invention.Wherein, air-conditioning is under heating mode
It runs, is provided with the first temperature sensor, the first temperature sensor and the first humidity sensor on the outdoor heat exchanger of air-conditioning；The
One temperature sensor and the first humidity sensor are arranged at the refrigerant exit of outdoor heat exchanger, and second temperature sensor setting exists
The air inlet of outdoor heat exchanger.
As shown in figure 5, the defrosting device 10 of the air-conditioning of the embodiment of the present invention, comprising: obtain module 11, first judgment module
12, detection module 13, the second judgment module 14 and control module 15.
Wherein, obtain module 11 be used to obtain the first temperature of the first temperature sensor, second temperature sensor second
First humidity of temperature and the first humidity sensor；First judgment module 12 is used for according to the first temperature, second temperature and the
One humidity, judges whether air-conditioning is in frosting state；Detection module 13 is used for when air-conditioning is in frosting state, to preset duration
The air conditioning capacity of interior air-conditioning is detected；Second judgment module 14 is used to judge that air-conditioning is worked as according to the air conditioning capacity detected
Whether preceding frosting velocity exceeds preset frosting velocity；Control module 15 is used to exceed preset knot when the frosting degree of air-conditioning
When white degree, then controls air-conditioning and enter defrost process.
Further, first judgment module 12 is specifically used for: according to the first temperature, obtaining the dew point temperature under the first humidity
Degree；The temperature difference between second temperature and dew-point temperature is obtained, if temperature difference reaches preset value, it is determined that air-conditioning is in frosting
State.
Further, as shown in fig. 6, the second judgment module 14 further include: judging unit 141, acquiring unit 142 and determination
Unit 143.
Wherein, judging unit 141 is used for the air conditioning capacity according to the arbitrary neighborhood moment in preset duration, judges air conditioning capacity
Whether decaying；Acquiring unit 142 is used for when air conditioning capacity is being decayed, and obtains the decaying speed at air conditioning capacity current time
Rate；Determination unit 143 is for the rate of decay at current time to be compared with rate of decay threshold value, if current time declines
The rate of deceleration is greater than rate of decay threshold value, determines the current frosting velocity degree of air-conditioning beyond preset frosting velocity degree.
Further, it is determined that unit 143 is also used to: comparing by the rate of decay at current time and rate of decay threshold value
Than before, according to the model of air-conditioning, the rate of decay threshold value of air-conditioning is obtained.
Further, judging unit 141 is also used to: continue the air conditioning capacity for comparing adjacent moment, if previous moment
Air conditioning capacity is higher than the air conditioning capacity of later moment in time, determines that air conditioning capacity is being decayed.
Further, acquiring unit 142 is specifically used for: obtaining the air conditioning capacity at current time and the air-conditioning energy of previous moment
The pad value of power；Difference is done according to the pad value of pad value and previous moment, gets the rate of decay at current time.
Further, as shown in fig. 6, the defrosting device 10 of air-conditioning further include: defrost monitoring module 16, defrost monitoring module
16 for detecting the temperature of temperature detecting point on air-conditioning, judging whether needs according to temperature after control air-conditioning enters defrost
Defrost process is exited, when judging that air-conditioning needs to exit defrost process, then air-conditioning is controlled and exits defrost process；Alternatively, detection
The variation of air conditioning capacity judges whether to need to exit defrost process according to the variation of air conditioning capacity, when judging that air-conditioning needs move back
Out when defrost process, then controls air-conditioning and exit defrost process.
By the device that the embodiment of the present invention two is introduced, filled used by the method to implement the embodiment of the present invention one
It sets, so based on the method that the embodiment of the present invention one is introduced, the affiliated personnel in this field can understand the specific structure of the system
And deformation, so details are not described herein.Device used by the method for all embodiment of the present invention one belongs to the present invention and is intended to
The range of protection.
In order to achieve the above objectives, the embodiment of the present invention also proposed a kind of air-conditioning, as shown in fig. 7, air-conditioning 300 includes air-conditioning
Defrosting device 10.
In order to achieve the above objectives, the embodiment of the present invention also proposed a kind of electronic equipment, including memory, processor；Its
In, processor runs journey corresponding with executable program code by reading the executable program code stored in memory
Sequence, with the defrosting method for realizing air-conditioning above-mentioned.
In order to achieve the above objectives, the embodiment of the present invention also proposed a kind of non-transitorycomputer readable storage medium,
On be stored with computer program, which realizes the defrosting method of air-conditioning above-mentioned when being executed by processor.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the present invention, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
It should be noted that in the claims, any reference symbol between parentheses should not be configured to power
The limitation that benefit requires.Word "comprising" does not exclude the presence of component or step not listed in the claims.Before component
Word "a" or "an" does not exclude the presence of multiple such components.The present invention can be by means of including several different components
It hardware and is realized by means of properly programmed computer.In the unit claims listing several devices, these are filled
Several in setting, which can be, to be embodied by the same item of hardware.The use of word first, second, and third is not
Indicate any sequence.These words can be construed to title.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (18)
1. a kind of defrosting method of air-conditioning, which comprises the following steps:
When running under the air-conditioning is in heating mode, the first temperature and first at acquisition outdoor heat exchanger refrigerant exit are wet
The second temperature of degree and indoor heat exchanger air inlet；
According to first temperature, the second temperature and first humidity, identify that the air-conditioning is in frosting state, and
The air conditioning capacity of the air-conditioning in preset duration is detected；
According to the air conditioning capacity detected, judge whether the current frosting velocity of the air-conditioning exceeds preset frosting speed
Degree；
When the current frosting velocity exceeds preset frosting velocity, then controls the air-conditioning and enter defrost process.
2. the defrosting method of air-conditioning according to claim 1, which is characterized in that be arranged on the outdoor heat exchanger of the air-conditioning
There are the first temperature sensor, second temperature sensor and the first humidity sensor；First temperature sensor and described first
Humidity sensor is arranged at the refrigerant exit of the outdoor heat exchanger, and the second temperature sensor setting is changed in the outdoor
The air inlet of hot device, the method also includes:
Obtain the first temperature of first temperature sensor, the second temperature of the second temperature sensor and described
First humidity of one humidity sensor.
3. the defrosting method of air-conditioning according to claim 2, which is characterized in that described according to first temperature, second
Temperature and first humidity, judge the air-conditioning whether frosting, comprising:
According to first temperature, the dew-point temperature under first humidity is obtained；
The temperature difference between the second temperature and the dew-point temperature is obtained, if the temperature difference reaches preset value, really
The fixed air-conditioning is in frosting state.
4. the defrosting method of air-conditioning according to claim 1, which is characterized in that the air-conditioning energy that the basis detects
Power, judges whether the frosting velocity of the air-conditioning exceeds preset frosting velocity, comprising:
According to the air conditioning capacity at arbitrary neighborhood moment in the preset duration, judge whether the air conditioning capacity is declining
Subtract；
If the air conditioning capacity is being decayed, the rate of decay at the air conditioning capacity current time is obtained；
The rate of decay at the current time is compared with rate of decay threshold value, if the rate of decay at the current time
Greater than the rate of decay threshold value, determine the current frosting velocity beyond the preset frosting velocity.
5. the defrosting method of air-conditioning according to claim 4, which is characterized in that the decaying speed by the current time
Before rate is compared with rate of decay threshold value, further includes:
According to the model of the air-conditioning, the rate of decay threshold value of the air-conditioning is obtained.
6. the defrosting method of air-conditioning according to claim 4, which is characterized in that described according to any in the preset duration
The air conditioning capacity of adjacent moment, judges whether the air conditioning capacity is decaying, comprising:
Continue the air conditioning capacity for comparing adjacent moment, if the air conditioning capacity of previous moment is higher than the institute of later moment in time
Air conditioning capacity is stated, determines that the air conditioning capacity is being decayed.
7. the defrosting method of air-conditioning according to claim 6, which is characterized in that it is described obtain the air conditioning capacity it is current when
The rate of decay at quarter, comprising:
Obtain the pad value of the air conditioning capacity at current time and the air conditioning capacity of previous moment；
Difference is done according to the pad value of the pad value and previous moment, obtains the rate of decay at the current time.
8. the defrosting method of air-conditioning according to claim 1-7, which is characterized in that the control air-conditioning into
After entering defrost process, further includes:
The temperature for detecting temperature detecting point on the air-conditioning judges whether to need to exit defrost process according to the temperature, when sentencing
It is disconnected go out air-conditioning when needing to exit defrost process, then control the air-conditioning and exit the defrost process；Alternatively,
The variation for detecting the air conditioning capacity judges whether to need to exit defrost process according to the variation of the air conditioning capacity, when
When judging that the air-conditioning needs to exit defrost process, then controls the air-conditioning and exit the defrost process.
9. a kind of defrosting device of air-conditioning, which is characterized in that air-conditioning is under heating mode and runs, the outdoor heat exchange of the air-conditioning
The first temperature sensor, the first temperature sensor and the first humidity sensor are provided on device；First temperature sensor and
First humidity sensor is arranged at the refrigerant exit of the outdoor heat exchanger, and the second temperature sensor is arranged in institute
State the air inlet of outdoor heat exchanger；The defrosting device of the air-conditioning includes:
Module is obtained, for obtaining the first temperature of first temperature sensor, the second temperature of the second temperature sensor
First humidity of degree and first humidity sensor；
First judgment module, for whether judging the air-conditioning according to first temperature, second temperature and first humidity
In frosting state；
Detection module, for when the air-conditioning is in frosting state, to the air conditioning capacity of the air-conditioning in preset duration into
Row detection；
Second judgment module, for whether judging the current frosting velocity of the air-conditioning according to the air conditioning capacity detected
Beyond preset frosting velocity；
Control module, for when the frosting degree of the air-conditioning exceeds preset frosting degree, then controlling the air-conditioning and entering
Defrost process.
10. the defrosting device of air-conditioning according to claim 9, which is characterized in that the first judgment module is specific to use
In:
According to first temperature, the dew-point temperature under first humidity is obtained；
The temperature difference between the second temperature and the dew-point temperature is obtained, if the temperature difference reaches preset value, really
The fixed air-conditioning is in frosting state.
11. the defrosting device of air-conditioning according to claim 9, which is characterized in that second judgment module, further includes:
Judging unit judges the air-conditioning energy for the air conditioning capacity according to the arbitrary neighborhood moment in the preset duration
Whether power is decaying；
Acquiring unit, for obtaining the rate of decay at the air conditioning capacity current time when the air conditioning capacity is being decayed；
Determination unit, for the rate of decay at the current time to be compared with rate of decay threshold value, if described current
The rate of decay at moment is greater than the rate of decay threshold value, determines the current frosting velocity degree of the air-conditioning beyond described default
Frosting velocity degree.
12. the defrosting device of air-conditioning according to claim 11, which is characterized in that the determination unit is also used to:
Before the rate of decay at the current time is compared with rate of decay threshold value, according to the model of the air-conditioning,
Obtain the rate of decay threshold value of the air-conditioning.
13. the defrosting device of air-conditioning according to claim 11, which is characterized in that the judging unit is also used to:
Continue the air conditioning capacity for comparing adjacent moment, if the air conditioning capacity of previous moment is higher than the institute of later moment in time
Air conditioning capacity is stated, determines that the air conditioning capacity is being decayed.
14. the defrosting device of air-conditioning according to claim 13, which is characterized in that the acquiring unit is specifically used for:
Obtain the pad value of the air conditioning capacity at current time and the air conditioning capacity of previous moment；
Difference is done according to the pad value of the pad value and previous moment, obtains the rate of decay at the current time.
15. according to the defrosting device of the described in any item air-conditionings of claim 9-14, which is characterized in that further include:
Defrost monitoring module, for detecting the temperature of temperature detecting point on the air-conditioning after controlling the air-conditioning and entering defrost
Degree, judges whether to need to exit defrost process according to the temperature, when judging that the air-conditioning needs to exit defrost process, then
It controls the air-conditioning and exits the defrost process；Alternatively, the variation of the air conditioning capacity is detected, according to the change of the air conditioning capacity
Change, judges whether to need to exit defrost process, when judging that the air-conditioning needs to exit defrost process, then control the air-conditioning
Exit the defrost process.
16. a kind of air-conditioning characterized by comprising such as the defrosting device of the described in any item air-conditionings of claim 9-15.
17. a kind of electronic equipment, which is characterized in that including memory, processor；
Wherein, the processor is run by reading the executable program code stored in the memory can be performed with described
The corresponding program of program code, with the defrosting method for realizing air-conditioning such as described in any one of claims 1-8.
18. a kind of non-transitorycomputer readable storage medium, is stored thereon with computer program, which is characterized in that the program
The defrosting method such as air-conditioning described in any one of claims 1-8 is realized when being executed by processor.
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| CN115773622B (en) * | 2021-09-09 | 2023-12-01 | 合肥美的电冰箱有限公司 | Refrigeration equipment and defrosting fault detection method and device thereof |
| CN114279044A (en) * | 2021-12-16 | 2022-04-05 | 珠海格力电器股份有限公司 | Defrosting method and device for air conditioning unit, control equipment and air conditioning unit |
| CN114279044B (en) * | 2021-12-16 | 2023-03-03 | 珠海格力电器股份有限公司 | Defrosting method and device for air conditioning unit, control equipment and air conditioning unit |
| CN114893866A (en) * | 2022-06-21 | 2022-08-12 | 珠海格力电器股份有限公司 | Defrosting control method and device and air conditioner |
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