CN106765778B - The defrosting control method of air conditioner and air conditioner - Google Patents
The defrosting control method of air conditioner and air conditioner Download PDFInfo
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- CN106765778B CN106765778B CN201710016270.5A CN201710016270A CN106765778B CN 106765778 B CN106765778 B CN 106765778B CN 201710016270 A CN201710016270 A CN 201710016270A CN 106765778 B CN106765778 B CN 106765778B
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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
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
-
- 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
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/0017—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using cold storage bodies, e.g. ice
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—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
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Atmospheric Sciences (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention proposes a kind of air conditioners, comprising: compressor；One end of indoor heat exchanger, indoor heat exchanger is connected with compressor；The other end of outdoor heat exchanger, indoor heat exchanger is connected with outdoor heat exchanger；Four-way reversing valve, between compressor and indoor heat exchanger and outdoor heat exchanger, the gas outlet of two orifice compressors of four-way reversing valve and one end of indoor heat exchanger, the air inlet of the another two orifice compressor of four-way reversing valve and one end of outdoor heat exchanger；Electric expansion valve is arranged between indoor heat exchanger and outdoor heat exchanger；Accumulation of heat component is arranged between electric expansion valve and outdoor heat exchanger；Wherein, accumulation of heat component includes: storage heater, is provided with heat-storing material in storage heater；Electric heating part is arranged inside storage heater.By the way that accumulation of heat component to be arranged in the import of outdoor heat exchanger, the efficiency for improving defrost into the refrigerant temperature before outdoor heat exchanger is further increased, the effect of defrost is improved, so that defrost is more thorough.
Description
Technical field
The present invention relates to air-conditioning technical fields, in particular to the defrost control of a kind of air conditioner and a kind of air conditioner
Method processed.
Background technique
Defrost mode employed in the air conditioner of the relevant technologies is all to carry out Hot-air blowing device using the delivery temperature of compressor
Frost, this is just needed through four-way reversing valve ability defrost, and when starting defrost, four-way reversing valve commutation makes outdoor heat exchanger
Heat release, indoor heat exchanger heat absorption will cause indoor environment temperature reduction, and in colder environment, air conditioner operation refrigeration is followed
Ring, will lead to that room temperature is sometimes hot and sometimes cold, necessarily increase the discomfort of user.And in the bigger environment of air humidity, frequently
Defrost operation will affect the service life of four-way reversing valve and other electrical parts.In addition, during air conditioner defrost, due to room
The frost of the lower half portion of outer heat-exchanger is more difficult cleared, therefore when in top half, oneself finishes through defrost, it is necessary to until outdoor
The lower half portion of heat exchanger also after complete defrost, can make air conditioner enter normal heating operation state, thus waste
A part of heat, and extend defrosting process, reduce heating capacity and reduce overall heating effect.
Summary of the invention
The present invention is directed to solve at least one of the technical problems existing in the prior art or related technologies.
For this purpose, an object of the present invention is to provide a kind of air conditioners.
It is another object of the present invention to propose a kind of defrosting control method of air conditioner.
In view of this, a purpose according to the present invention, proposes a kind of air conditioner, comprising: compressor；Indoor heat exchange
One end of device, indoor heat exchanger is connected with compressor；Outdoor heat exchanger, the other end and the outdoor heat exchanger phase of indoor heat exchanger
Even；Four-way reversing valve, between compressor and indoor heat exchanger and outdoor heat exchanger, two orifices of four-way reversing valve
The gas outlet of compressor and one end of indoor heat exchanger, the air inlet of the another two orifice compressor of four-way reversing valve and room
One end of external heat exchanger；Electric expansion valve is arranged between indoor heat exchanger and outdoor heat exchanger；Accumulation of heat component is arranged in electricity
Between sub- expansion valve and outdoor heat exchanger；Wherein, accumulation of heat component includes: storage heater, is provided with heat-storing material in storage heater；Electricity adds
Warmware is arranged inside storage heater.
Air conditioner provided by the invention is further improved by the way that accumulation of heat component to be arranged in the import of outdoor heat exchanger
Refrigerant temperature before entering outdoor heat exchanger, improves the efficiency of defrost, improves the effect of defrost so that defrost more thoroughly,
It is cleaner, and then improve the comfort level of indoor environment temperature during defrost.Specifically, accumulation of heat component includes storage heater content
The heat-storing material set and the electric heating part being arranged in storage heater, are preheated in advance by the electric heating part of low-power, are solved existing
There is in technology the problem of shortage of heat when there was only storage heater, using electric heating part power is excessively high and the excessively high problem of temperature, this hair
The heat-storing material of the air conditioner of bright offer is placed into accumulation of heat material by accommodating heat-storing material in storage heater, then by electric heating part
Between material, by the heating of electric heating part so that the enough heats of storage heater storage, further ensure that the efficiency and change of defrost
The effect of frost, avoiding long-time defrost in the prior art causes room temperature decline very fast, and fluctuations in indoor temperature is larger and gives
User's bring discomfort.Meanwhile by the mutual cooperation of heat-storing material and electric heating part, avoids and added using single electricity
Temperature rapid increase caused by heat function and electrically heated frequent unlatching and generates rush of current, it is therefore prevented that refrigerator oil carbon
Change, extend the service life of the electric elements such as four-way reversing valve, ensure that reliability, safety that air conditioner integrally uses and
Comfort promotes the user satisfaction of user.
Above-mentioned air conditioner according to the present invention, can also have following technical characteristic:
In the above-mentioned technical solutions, it is preferable that heat-storing material is phase-change material.
In any of the above-described technical solution, it is preferable that phase-change material is water, paraffin, glycol water or 12 water phosphoric acid
Disodium hydrogen.
In the technical scheme, heat-storing material uses phase-change material, using the physical characteristic of phase-change material by changing phase
Become the physical aspect of material and then absorbs or release heat.Air conditioner of the invention is a certain amount of by being equipped in storage heater
Phase-change material, during non-defrost, storage heater stores heat, and phase-change material form changes release during defrost
Heat is to accelerate defrost.Further, heat-storing material comprises at least one of the following that however, it is not limited to this: water, paraffin, ethylene glycol
Aqueous solution or 12 water disodium hydrogen phosphates can select preferable phase-change material according to the occasion of practical situations in concrete application.
Another object of the present invention also proposed a kind of defrosting control method of air conditioner, the defrosting control side of air conditioner
Method includes: in a heating mode, after the compressor of air conditioner operation preset time accumulative with the first predeterminated frequency, to control air-conditioning
The electric expansion valve of device detects the outlet temperature T3 of outdoor heat exchanger to the first default aperture；When outlet temperature T3 meets defrost
When condition, electric heating part is opened, and adjust compressor and run with the second predeterminated frequency, adjustment electric expansion valve to second is preset and opened
Degree carries out defrost；When outlet temperature T3 is more than or equal to the first preset temperature, electric heating part is closed；Exiting is preset when meeting
When ice-lolly part, terminate defrost.
A kind of defrosting control method of air conditioner provided by the invention runs a period of time in compressor with predeterminated frequency
Afterwards, the aperture for adjusting electric expansion valve, by detect outdoor heat exchanger outlet temperature, judge whether to meet defrost condition, when
Enter defrost pattern when meeting defrost condition, opens electrothermal piece and preheated, to supplement the heat of storage heater, while adjusting compression
The running frequency of machine and the aperture of electric expansion valve have reached optimal defrost state；Further, in real time outside sensing chamber
The outlet temperature of heat exchanger, and be compared with preset temperature, when outlet temperature is greater than preset temperature, then close electric heating
Part, to reduce energy consumption；It further, can also be by obtaining the operating status of electric heating part in real time, when the operation of electric heating part
When state reaches default closed state, electric heating part is closed by the real-time monitoring to electric heating part operating status and avoids electricity
Heating member runing time is longer or temperature is higher and damages；Further, the outlet temperature of real-time detection outdoor heat exchanger or
Defrost runing time terminates defrost when satisfaction is default exits defrost condition.
In the prior art, defrost just can be carried out by four-way reversing valve commutation, when starting defrost, four-way reversing valve is changed
To, making outdoor heat exchanger heat release, indoor heat exchanger heat absorption will cause indoor environment temperature reduction, in colder environment,
Air conditioner runs refrigeration cycle, will lead to that room temperature is sometimes hot and sometimes cold, increases the discomfort of user.And air conditioner provided by the present application
Defrosting control method, carry out defrost is matched with motor warmware by heat-storing material, may be implemented while lasting heating
Continue defrost, and then ensure that indoor environment temperature is not in biggish fluctuation, promotes comfortable degree Celsius of user；Into one
Step ground, defrosting control method of the invention do not need the frequent commutation of four-way reversing valve, so extend four-way reversing valve and other
The service life of electric elements ensure that the reliability used, safety and the comfort of air-conditioning, improve defrost efficiency, change
It has been apt to defrosting effect, has improved users' satisfaction degree.
A kind of defrosting control method of the air conditioner provided according to the present invention can also have following technical characteristic:
In the above-mentioned technical solutions, it is preferable that outlet temperature T3 meets defrost condition, specifically includes: after compressor start
Start timing；The outlet temperature minimum of outdoor heat exchanger in the first preset time period of accumulated running time of recording compressed machine
T30；When the accumulated running time of compressor continued to run is to the second preset time, the outlet temperature of outdoor heat exchanger is detected
When T3, outlet temperature difference Δ T (Δ T=T30-T3) meet the first preset temperature setting value, into defrost；Or when compressor after
When the accumulated running time of reforwarding row is to third preset time, the outlet temperature T3 of outdoor heat exchanger, outlet temperature difference Δ T are detected
When (Δ T=T30-T3) meets the second preset temperature setting value, into defrost.
In the technical scheme, judge whether to meet defrost condition have by detecting the outlet temperature T3 of outdoor heat exchanger
Body includes: that compressor start starts timing, and outdoor heat exchanger goes out in full second preset time period of the accumulative operation of recording compressed machine
The minimum T30 of mouthful temperature, then detect the outlet temperature of outdoor heat exchanger when compressor proceeds to third preset time
T3 calculates outlet temperature difference Δ T (Δ T=T30-T3) and is compared with the first preset temperature setting value, and then judges to export
Time-temperature reduces temperature T3 at one end, meets defrost condition, into defrost；Or the accumulative fortune continued to run when compressor
When the row time is to four preset times, the outlet temperature T3, outlet temperature difference Δ T (the Δ T=of the outdoor heat exchanger are detected
When T30-T3) meeting the second preset temperature setting value, into defrost.Judged by the variation of the outlet temperature of outdoor heat exchanger
Frosting situation in outdoor heat exchanger, and then judge whether to enter defrost, defrost can be carried out to outdoor heat exchanger in time, reduced
Energy consumption guarantees the heating effect of air-conditioning, promotes the usage experience of user.
In any of the above-described technical solution, it is preferable that outlet temperature T3 meets defrost condition, specifically includes: recording compressed
The 4th preset time of accumulated running time of machine；When T3 is less than or equal to the second preset temperature, then when continuous service the 5th is default
Between after, into defrost.
In the technical scheme, it can also be judged by the following manner and whether meet defrost condition, specifically include: record pressure
The outlet temperature T3 of outdoor heat exchanger, T3 is compared with the second preset temperature when contracting machine four preset time of accumulative operation,
When T3 is less than the second preset temperature, compressor is after the 5th preset time of continuous service, into defrost.In this manner,
Defrost periodically can be carried out to outdoor heat exchanger, guarantee the operating status of outdoor heat exchanger.
In any of the above-described technical solution, it is preferable that it is default to exit defrost condition, it specifically includes: detection outdoor heat exchanger
Inlet temperature T6, when inlet temperature T6 be more than or equal to third preset temperature when, terminate defrost；Or detection outdoor heat exchanger
Inlet temperature T7 starts timing, the 6th preset time of reruning when the inlet temperature T7 is more than or equal to four preset temperatures
Afterwards, terminate defrost；Or start timing when entering defrost, when defrost runing time reaches seven preset times, terminate defrost.
In the technical scheme, the defrost condition exited includes the following three types mode at least one, and however, it is not limited to this,
Wherein, a kind of mode is to detect the inlet temperature T6 of outdoor heat exchanger, and inlet temperature T6 is compared with third preset temperature,
When inlet temperature T6 is more than or equal to third preset temperature, terminate defrost, the inlet temperature by detecting outdoor heat exchanger can
Accurately judge whether defrost can be terminated, can accurately determine the defrost end time, avoids waste energy consumption；A kind of mode
For, when inlet temperature T7 is more than or equal to four preset temperatures, start timing, after the 6th preset time of reruning, terminate defrost,
Inlet temperature by detecting outdoor heat exchanger is compared with the 4th preset temperature, after judgement meets defrost condition, is being continued
Terminate defrost after defrost preset time, ensure that defrosting effect is more thorough；Yet another approach is to count since when entering defrost
When, defrost operation duration terminates defrost after reaching the 7th preset duration, and method is simple and easy.
In any of the above-described technical solution, it is preferable that when satisfaction is default exits defrost condition, terminate defrost, it is specific to wrap
It includes: adjusting indoor fan revolving speed and be increased to the revolving speed before defrost, into heating mode.
In the technical scheme, when satisfaction exits defrost condition, the revolving speed of indoor fan is increased to the revolving speed before defrost,
So that accumulation of heat heating module does not work, air conditioner is heated into normal heating mode, is reached room temperature and is met relaxing for user
Suitable degree Celsius, improve the usage experience of user.
In any of the above-described technical solution, it is preferable that the value range of the first preset time 5 minutes to 10 minutes；Second
The value range of preset time 29 minutes to 40 minutes；The value range of third preset time is 35 minutes to 50 minutes；First
The value range of preset temperature setting value is 0.5 degree Celsius to 2.5 degrees Celsius；The value range of second preset temperature setting value is
1 degree Celsius to 4 degrees Celsius.
In the technical scheme, since compressor start, reach the first preset time when compressing accumulative operation duration, i.e.,
In the case of preferably, the first preset time value is 5 minutes to 10 minutes, and outdoor heat exchanger is recorded in the second preset time
The minimum T30 of outlet temperature；Second preset time is then that compressor adds up operation duration, and preferred value range is 29 minutes
To 40 minutes, then determine whether to meet into defrost condition, outlet temperature T3 the first preset temperature setting value of foot, it is therefore preferable to
0.5 degree Celsius to 2.5 degrees Celsius, into defrost；Third preset time is then that compressor adds up after running 35 minutes to 50 minutes,
Determine whether to meet again into defrost condition and meets the second preset temperature predetermined value, it is therefore preferable to 1 degree Celsius to 4 degrees Celsius, into
Enter defrost.
In any of the above-described technical solution, it is preferable that the value range of the 4th preset time is 25 minutes to 35 minutes；The
The value range of five preset times is 1 minute to 5 minutes；The value range of first preset temperature is -24 degrees Celsius to -22 Celsius
Degree.
In the technical scheme, when the accumulative operation of compressor reaches the 4th preset time, preferably 25 minutes to 35 points
Zhong Hou, determines whether outlet temperature T3 is less than or equal to the first preset temperature, and the value range of the first preset temperature is -24 degrees Celsius
To -22 degrees Celsius, that is, judge that outlet temperature reduces, compressor reruns the 5th preset time at this time, it is therefore preferable to which 1 minute extremely
Enter defrost after five minutes.
In any of the above-described technical solution, it is preferable that 8 degrees Celsius to 15 degrees Celsius of the value range of the second preset temperature；
3 degrees Celsius to 6 degrees Celsius of the value range of third preset temperature；The value range of 6th preset time is 20 seconds to 50 seconds；The
The value range of seven preset times is 5 minutes to 15 minutes.
In the technical scheme, it exits the inlet temperature T6 that defrost condition is outdoor heat exchanger and is more than or equal to the second default temperature
Degree when the second preset temperature is preferably 3 degrees Celsius to 6 degrees Celsius, terminates defrost；Or the inlet temperature when outdoor heat exchanger
When T7 is more than or equal to third preset temperature, at preferably 3 degrees Celsius to 6 degrees Celsius, start timing, rerun the 6th it is default when
Between, it is therefore preferable to after 20 seconds to 50 seconds, terminate defrost；Alternatively, since enter defrost timing, when defrost reach the 7th it is default when
Between 5 minutes to 15 minutes when, terminate defrost.Above time is better embodiment, it is not limited to this.
In any of the above-described technical solution, it is preferable that the first default aperture is less than or equal to the second default aperture.
In the technical scheme, by adjusting the aperture of electric expansion valve, and then the stream of refrigerant in the system passed through is adjusted
Amount, has reached optimal defrosting effect, is conducive to defrost.
Additional aspect and advantage of the invention will become obviously in following description section, or practice through the invention
Recognize.
Detailed description of the invention
Fig. 1 shows system schematic under the air conditioner refrigeration mode of one embodiment of the invention；
Fig. 2 shows system schematics under the air conditioner heat-production mode of one embodiment of the invention；
Fig. 3 shows schematic diagram under the air-conditioner system defrost pattern of one embodiment of the invention；
Fig. 4 shows the defrosting control method flow diagram of one embodiment of the present of invention air conditioner；
Fig. 5 shows the defrosting control method flow diagram of further embodiment air conditioner of the present invention；
Fig. 6 shows the defrosting control method flow diagram of another embodiment air conditioner of the invention；
Fig. 7 shows the defrosting control method flow diagram of another embodiment air conditioner of the invention.
Wherein, corresponding relationship of the Fig. 1 into Fig. 3 between appended drawing reference and component names are as follows:
1 compressor, 2 four-way reversing valves, 3 electric expansion valves, 4 first shut-off valves, 5 accumulation of heat components.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real
Applying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application
Feature in example and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also
To be implemented using other than the one described here other modes, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
A kind of defrost of air conditioner and air conditioner described according to some embodiments of the invention is described referring to Fig. 1 to Fig. 7
Control method.
As shown in Figure 1 to Figure 3, according to one embodiment of present invention, a kind of air conditioner is proposed, comprising: compressor, room
Interior heat exchanger, outdoor heat exchanger, four-way reversing valve, electric expansion valve and accumulation of heat component；Wherein, one end of indoor heat exchanger with
Compressor is connected, and the other end of indoor heat exchanger is connected with outdoor heat exchanger, and four-way reversing valve is located at compressor and indoor heat exchange
Between device and outdoor heat exchanger, the gas outlet of two orifice compressors of four-way reversing valve and one end of indoor heat exchanger,
The air inlet of the another two orifice compressor of four-way reversing valve and one end of outdoor heat exchanger；Electric expansion valve is arranged in room
Between interior heat exchanger and outdoor heat exchanger；Accumulation of heat component is arranged between electric expansion valve and outdoor heat exchanger；Wherein, accumulation of heat group
Part includes: storage heater, is provided with heat-storing material in storage heater；Electric heating part is arranged inside storage heater.
Air conditioner provided by the invention is further improved by the way that accumulation of heat component to be arranged in the import of outdoor heat exchanger
Refrigerant temperature before entering outdoor heat exchanger, improves the efficiency of defrost, improves the effect of defrost so that defrost more thoroughly,
It is cleaner, and then improve the comfort level of indoor environment temperature during defrost.Specifically, accumulation of heat component includes storage heater content
The heat-storing material set and the electric heating part being arranged in storage heater, are preheated in advance by the electric heating part of low-power, are solved existing
There is in technology the problem of shortage of heat when there was only storage heater, using electric heating part power is excessively high and the excessively high problem of temperature, this hair
The heat-storing material of the air conditioner of bright offer is placed into accumulation of heat material by accommodating heat-storing material in storage heater, then by electric heating part
Between material, by the heating of electric heating part so that the enough heats of storage heater storage, further ensure that the efficiency and change of defrost
The effect of frost, avoiding long-time defrost in the prior art causes room temperature decline very fast, and fluctuations in indoor temperature is larger and gives
User's bring discomfort.Meanwhile by the mutual cooperation of heat-storing material and electric heating part, avoids and added using single electricity
Temperature rapid increase caused by heat function and electrically heated frequent unlatching and generates rush of current, it is therefore prevented that refrigerator oil carbon
Change, extend the service life of the electric elements such as four-way reversing valve, ensure that reliability, safety that air conditioner integrally uses and
Comfort promotes the user satisfaction of user.
As shown in Figure 1, (arrow direction is the system schematic under the refrigeration mode of the air conditioner of one embodiment of the invention
Refrigerant flow direction), in cooling mode, four-way reversing valve commutation, electric heating part is closed, and the first shut-off valve is closed, and refrigerant first passes through
Enter evaporator after condenser to return in compressor, realizes the circulation of refrigeration.
As shown in Fig. 2, (arrow direction is the system schematic under the heating mode of the air conditioner of one embodiment of the invention
Refrigerant flow direction), in a heating mode, four-way reversing valve commutation, electric heating part is closed, and the first shut-off valve is closed, and refrigerant first passes through
Enter condenser after evaporator to return in compressor, realizes the circulation of heating.
As shown in figure 3, under the heating mode of the air conditioner of one embodiment of the invention defrost system schematic (arrow side
Flowed to for refrigerant), in a heating mode, four-way reversing valve commutation, electric heating part is opened, and the first cut-off valve opening passes through electricity
Heating member electric heating lifting heating load, realizes and carries out defrost in a heating mode, ensure that the comfort of room temperature.
In one embodiment of the invention, it is preferable that heat-storing material is phase-change material, and further, phase-change material is
Water, paraffin, glycol water or 12 water disodium hydrogen phosphates.
In this embodiment, heat-storing material uses phase-change material, using the physical characteristic of phase-change material by changing phase transformation
The physical aspect of material absorbs in turn or releases heat.Air conditioner of the invention in storage heater by being equipped with a certain amount of phase
Become material, during non-defrost, storage heater stores heat, and phase-change material form, which changes, during defrost discharges heat
Amount is to accelerate defrost.Further, heat-storing material comprises at least one of the following that however, it is not limited to this: water, paraffin, ethylene glycol water
Solution or 12 water disodium hydrogen phosphates can select preferable phase-change material according to the occasion of practical situations in concrete application.
Fig. 4 shows the flow diagram of the defrosting control method of the air conditioner of one embodiment of the present of invention, such as Fig. 4 institute
Show, the defrosting control method of the air conditioner includes:
Step 402, in a heating mode, when the compressor of air conditioner is with the accumulative operation preset time of the first predeterminated frequency
Afterwards, the electric expansion valve of air conditioner is controlled to the first default aperture；
Step 404, the outlet temperature T3 of outdoor heat exchanger is detected；
Step 406, when outlet temperature T3 meets defrost condition, electric heating part is opened, and it is pre- with second to adjust compressor
If frequency is run, adjustment electric expansion valve to the second default aperture carries out defrost；
Step 408, when outlet temperature T3 is more than or equal to the first preset temperature, electric heating part is closed；
Step 410, when satisfaction is default exits defrost condition, terminate defrost.
A kind of defrosting control method of air conditioner provided by the invention runs a period of time in compressor with predeterminated frequency
Afterwards, the aperture for adjusting electric expansion valve, by detect outdoor heat exchanger outlet temperature, judge whether to meet defrost condition, when
Enter defrost pattern when meeting defrost condition, opens electrothermal piece and preheated, to supplement the heat of storage heater, while adjusting compression
The running frequency of machine and the aperture of electric expansion valve have reached optimal defrost state；Further, in real time outside sensing chamber
The outlet temperature of heat exchanger, and be compared with preset temperature, when outlet temperature is greater than preset temperature, then close electric heating
Part, to reduce energy consumption；It further, can also be by obtaining the operating status of electric heating part in real time, when the operation of electric heating part
When state reaches default closed state, electric heating part is closed by the real-time monitoring to electric heating part operating status and avoids electricity
Heating member runing time is longer or temperature is higher and damages；Further, the outlet temperature of real-time detection outdoor heat exchanger or
Defrost runing time terminates defrost when satisfaction is default exits defrost condition.
In the prior art, defrost just can be carried out by four-way reversing valve commutation, when starting defrost, four-way reversing valve is changed
To, making outdoor heat exchanger heat release, indoor heat exchanger heat absorption will cause indoor environment temperature reduction, in colder environment,
Air conditioner runs refrigeration cycle, will lead to that room temperature is sometimes hot and sometimes cold, increases the discomfort of user.And air conditioner provided by the present application
Defrosting control method, carry out defrost is matched with motor warmware by heat-storing material, may be implemented while lasting heating
Continue defrost, and then ensure that indoor environment temperature is not in biggish fluctuation, promotes comfortable degree Celsius of user；Into one
Step ground, defrosting control method of the invention do not need the frequent commutation of four-way reversing valve, so extend four-way reversing valve and other
The service life of electric elements ensure that the reliability used, safety and the comfort of air-conditioning, improve defrost efficiency, change
It has been apt to defrosting effect, has improved users' satisfaction degree.
Fig. 5 shows the flow diagram of the defrosting control method of the air conditioner of yet another embodiment of the present invention, such as Fig. 5
Shown, the defrosting control method of the air conditioner includes:
Step 502, start timing after compressor start；
Step 504, in the first preset time period of accumulated running time of recording compressed machine the outdoor heat exchanger outlet
Temperature minimum T30；
Step 506, when the accumulated running time of compressor continued to run is to the second preset time, outdoor heat exchange is detected
The outlet temperature T3 of device；
Step 508, when outlet temperature difference Δ T (Δ T=T30-T3) meets the first preset temperature setting value, into change
Frost；
Step 510, electric heating part is opened, and adjusts compressor and is run with the second predeterminated frequency, adjustment electric expansion valve is extremely
Second default aperture carries out defrost；
Step 512, when outlet temperature T3 is more than or equal to the first preset temperature, electric heating part is closed；
Step 514, the inlet temperature T6 for detecting the outdoor heat exchanger, when the inlet temperature T6 is pre- more than or equal to third
If when temperature, terminating defrost；Or
Step 516, the inlet temperature T7 for detecting the outdoor heat exchanger, when the inlet temperature T7 is more than or equal to the 4th in advance
If when temperature, starting timing, after the 6th preset time of reruning, terminate defrost；Or
Step 518, into timing is started when defrost, when defrost runing time reaches seven preset times, terminate defrost；
Step 520, it adjusts indoor fan revolving speed and is increased to the revolving speed before defrost, into heating mode.
Fig. 6 shows the flow diagram of the defrosting control method of the air conditioner of yet another embodiment of the present invention, such as Fig. 6
Shown, the defrosting control method of the air conditioner includes:
Step 602, start timing after compressor start；
Step 604, in the first preset time period of accumulated running time of recording compressed machine the outdoor heat exchanger outlet
Temperature minimum T30；
Step 606, when the accumulated running time of compressor continued to run is to third preset time, outdoor heat exchange is detected
The outlet temperature T3 of device；
Step 608, when outlet temperature difference Δ T (Δ T=T30-T3) meets the second preset temperature setting value, into change
Frost；
Step 610, electric heating part is opened, and adjusts compressor and is run with the second predeterminated frequency, adjustment electric expansion valve is extremely
Second default aperture carries out defrost；
Step 612, when outlet temperature T3 is more than or equal to the first preset temperature, electric heating part is closed；
Step 614, the inlet temperature T6 for detecting the outdoor heat exchanger, when the inlet temperature T6 is pre- more than or equal to third
If when temperature, terminating defrost；Or
Step 616, the inlet temperature T7 for detecting the outdoor heat exchanger, when the inlet temperature T7 is more than or equal to the 4th in advance
If when temperature, starting timing, after the 6th preset time of reruning, terminate defrost；Or
Step 618, into timing is started when defrost, when defrost runing time reaches seven preset times, terminate defrost；
Step 620, it adjusts indoor fan revolving speed and is increased to the revolving speed before defrost, into heating mode.
Fig. 7 shows the flow diagram of the defrosting control method of the air conditioner of yet another embodiment of the present invention, such as Fig. 7
Shown, the defrosting control method of the air conditioner includes:
Step 702, in a heating mode, when the compressor of air conditioner is with the accumulative operation preset time of the first predeterminated frequency
Afterwards, the electric expansion valve of air conditioner is controlled to the first default aperture；
Step 704, the 4th preset time of accumulated running time of the compressor is recorded；
Step 706, the outlet temperature T3 of outdoor heat exchanger is detected；
Step 708, when the T3 is less than or equal to the second preset temperature, then after the 5th preset time of continuous service, enter
Defrost；
Step 710, electric heating part is opened, and adjusts compressor and is run with the second predeterminated frequency, adjustment electric expansion valve is extremely
Second default aperture carries out defrost；
Step 712, when outlet temperature T3 is more than or equal to the first preset temperature, electric heating part is closed；
Step 714, the inlet temperature T6 for detecting the outdoor heat exchanger, when the inlet temperature T6 is pre- more than or equal to third
If when temperature, terminating defrost；Or
Step 716, the inlet temperature T7 for detecting the outdoor heat exchanger, when the inlet temperature T7 is more than or equal to the 4th in advance
If when temperature, starting timing, after the 6th preset time of reruning, terminate defrost；Or
Step 718, into timing is started when defrost, when defrost runing time reaches seven preset times, terminate defrost；
Step 720, it adjusts indoor fan revolving speed and is increased to the revolving speed before defrost, into heating mode.
In one embodiment of the invention, judge whether to meet defrost by detecting the outlet temperature T3 of outdoor heat exchanger
Condition specifically includes: compressor start starts timing, and recording compressed machine is accumulative to run outdoor heat exchange in full second preset time period
The minimum T30 of the outlet temperature of device, then detect going out for outdoor heat exchanger when compressor proceeds to third preset time
Mouth temperature T3 calculates outlet temperature difference Δ T (Δ T=T30-T3) and is compared with the first preset temperature setting value, and then judges
Time-temperature reduces outlet temperature T3 at one end out, meets defrost condition, into defrost；Or continuing to run when compressor
When accumulated running time is to four preset times, the outlet temperature T3, the outlet temperature difference Δ T of the outdoor heat exchanger are detected
When (Δ T=T30-T3) meets the second preset temperature setting value, into defrost.Pass through the variation of the outlet temperature of outdoor heat exchanger
Judge the frosting situation in outdoor heat exchanger, and then judges whether to enter defrost, it can in time to outdoor heat exchanger
Frost reduces energy consumption, guarantees the heating effect of air-conditioning, promote the usage experience of user.
In one embodiment of the invention, it can also be judged by the following manner and whether meet defrost condition, it is specific to wrap
It includes: the outlet temperature T3 of outdoor heat exchanger when recording compressed machine four preset time of accumulative operation, by T3 and the second preset temperature
It is compared, when T3 is less than the second preset temperature, compressor is after the 5th preset time of continuous service, into defrost.Pass through
Such mode periodically can carry out defrost to outdoor heat exchanger, guarantee the operating status of outdoor heat exchanger.
In one embodiment of the invention, the defrost condition exited includes the following three types mode at least one but not office
Be limited to this, wherein a kind of mode is to detect the inlet temperature T6 of outdoor heat exchanger, by inlet temperature T6 and third preset temperature into
Row compares, and when inlet temperature T6 is more than or equal to third preset temperature, terminates defrost, by the import temperature for detecting outdoor heat exchanger
Degree can accurately judge whether defrost can be terminated, and can accurately determine the defrost end time, avoid waste energy consumption；One
Kind of mode is, when inlet temperature T7 is more than or equal to four preset temperatures, starts timing, after the 6th preset time of reruning, knot
Fasciculation frost, the inlet temperature by detecting outdoor heat exchanger is compared with the 4th preset temperature, after judgement meets defrost condition,
Terminate defrost after continuing defrost preset time, ensure that defrosting effect is more thorough；Yet another approach is, from opening when entering defrost
Beginning timing, defrost operation duration terminate defrost after reaching the 7th preset duration, and method is simple and easy.
In one embodiment of the invention, when satisfaction exits defrost condition, the revolving speed of indoor fan is increased to defrost
Preceding revolving speed, so that accumulation of heat heating module does not work, air conditioner is heated into normal heating mode, and room temperature is made to reach satisfaction
Comfortable degree Celsius of user, improves the usage experience of user.
In one embodiment of the invention, since compressor start, reach first in advance when compressing accumulative operation duration
If the time, i.e., preferably in the case of, the first preset time value be 5 minutes to 10 minutes, the recording room in the second preset time
The minimum T30 of the outlet temperature of external heat exchanger；Second preset time is then that compressor adds up operation duration, preferred value model
Enclosing is 29 minutes to 40 minutes, then is determined whether to meet into defrost condition, outlet temperature T3 the first preset temperature setting value of foot,
Preferably 0.5 degree Celsius to 2.5 degrees Celsius, into defrost；Third preset time is then the accumulative operation of compressor 35 minutes extremely
After 50 minutes, then determine whether to meet into defrost condition and meet the second preset temperature predetermined value, it is therefore preferable to 1 degree Celsius to 4
Degree Celsius, into defrost.
Further, sentence when the accumulative operation of compressor reaches the 4th preset time after preferably 25 minutes to 35 minutes
Determine whether outlet temperature T3 is less than or equal to the first preset temperature, the value range of the first preset temperature is -24 degrees Celsius to -22 and takes the photograph
Family name's degree judges that outlet temperature reduces, compressor reruns the 5th preset time at this time, it is therefore preferable to which 1 minute to after five minutes
Into defrost.
Further, it exits the inlet temperature T6 that defrost condition is outdoor heat exchanger and is more than or equal to the second preset temperature, the
When two preset temperatures are preferably 3 degrees Celsius to 6 degrees Celsius, terminate defrost；Or when the inlet temperature T7 of outdoor heat exchanger is big
When being equal to third preset temperature, at preferably 3 degrees Celsius to 6 degrees Celsius, start timing, the 6th preset time of reruning,
After preferably 20 seconds to 50 seconds, terminate defrost；Alternatively, since enter defrost timing, when defrost reaches the 7th preset time 5
When minute to 15 minutes, terminate defrost.Above time is better embodiment, it is not limited to this.
In one embodiment of the invention, it by adjusting the aperture of electric expansion valve, and then adjusts in the system passed through
The flow of refrigerant has reached optimal defrosting effect, is conducive to defrost.
In the present invention, term " multiple " then refers to two or more, unless otherwise restricted clearly.Term " peace
Dress ", " connected ", " connection ", the terms such as " fixation " shall be understood in a broad sense, can also be with for example, " connection " may be a fixed connection
It is to be detachably connected, or be integrally connected；" connected " can be directly connected, can also be indirectly connected through an intermediary.It is right
For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Mean that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one reality of the invention
It applies in example or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment or reality
Example.Moreover, description particular features, structures, materials, or characteristics can in any one or more of the embodiments or examples with
Suitable mode combines.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (11)
1. a kind of defrosting control method of air conditioner, which is characterized in that the air conditioner includes accumulation of heat component, is arranged in the sky
Between the electric expansion valve and outdoor heat exchanger for adjusting device；Wherein, the accumulation of heat component includes: storage heater, is set in the storage heater
It is equipped with heat-storing material；Electric heating part is arranged inside the storage heater, and the defrosting control method of the air conditioner includes:
In a heating mode, after the compressor of air conditioner operation preset time accumulative with the first predeterminated frequency, institute is controlled
The electric expansion valve of air conditioner is stated to the first default aperture, detects the outlet temperature T3 of the outdoor heat exchanger；
When the outlet temperature T3 meets defrost condition, the electric heating part is opened, and it is pre- with second to adjust the compressor
If frequency is run, adjustment electric expansion valve to the second default aperture carries out defrost, and the first default aperture is less than or equal to described
Second default aperture；
When the outlet temperature T3 is more than or equal to the first preset temperature, the electric heating part is closed；
When satisfaction is default exits defrost condition, terminate defrost.
2. the defrosting control method of air conditioner according to claim 1, which is characterized in that the outlet temperature T3 satisfactionization
Ice-lolly part, specifically includes:
Start timing after compressor start；
The outlet temperature for recording the outdoor heat exchanger in the first preset time period of accumulated running time of the compressor is minimum
Value T30；
When the accumulated running time of the compressor continued to run is to the second preset time, the outdoor heat exchanger is detected
Outlet temperature T3, when the outlet temperature difference Δ T (Δ T=T30-T3) meets the first preset temperature setting value, into defrost；Or
When the accumulated running time of the compressor continued to run is to third preset time, the outdoor heat exchanger is detected
Outlet temperature T3, when the outlet temperature difference Δ T (Δ T=T30-T3) meets the second preset temperature setting value, into defrost.
3. the defrosting control method of air conditioner according to claim 1, which is characterized in that the outlet temperature T3 satisfactionization
Ice-lolly part, specifically includes:
Record the 4th preset time of accumulated running time of the compressor；
When the T3 is less than or equal to the second preset temperature, then after the 5th preset time of continuous service, into defrost.
4. the defrosting control method of air conditioner according to claim 1, which is characterized in that described preset exits defrost item
Part specifically includes:
The inlet temperature T6 for detecting the outdoor heat exchanger, when the inlet temperature T6 is more than or equal to third preset temperature, knot
Fasciculation frost；Or
The inlet temperature T7 for detecting the outdoor heat exchanger is opened when the inlet temperature T7 is more than or equal to four preset temperatures
Beginning timing after the 6th preset time of reruning, terminates defrost；Or
Into timing is started when defrost, when defrost runing time reaches seven preset times, terminate defrost.
5. the defrosting control method of air conditioner according to claim 1, which is characterized in that described when default the exiting of satisfaction
When ice-lolly part, terminates defrost, specifically includes:
It adjusts indoor fan revolving speed and is increased to the revolving speed before defrost, into heating mode.
6. the defrosting control method of air conditioner according to claim 2, which is characterized in that
The value range of first preset time 5 minutes to 10 minutes；
The value range of second preset time 29 minutes to 40 minutes；
The value range of the third preset time is 35 minutes to 50 minutes；
The value range of the first preset temperature setting value is 0.5 degree Celsius to 2.5 degrees Celsius；
The value range of the second preset temperature setting value is 1 degree Celsius to 4 degrees Celsius.
7. the defrosting control method of air conditioner according to claim 3, which is characterized in that
The value range of 4th preset time is 25 minutes to 35 minutes；
The value range of 5th preset time is 1 minute to 5 minutes；
The value range of second preset temperature is -24 degrees Celsius to -22 degrees Celsius.
8. the defrosting control method of air conditioner according to claim 4, which is characterized in that
8 degrees Celsius to 15 degrees Celsius of the value range of the third preset temperature；
3 degrees Celsius to 6 degrees Celsius of value range of 4th preset temperature；
The value range of 6th preset time is 20 seconds to 50 seconds；
The value range of 7th preset time is 5 minutes to 15 minutes.
9. the defrosting control method of air conditioner according to claim 1, which is characterized in that
The heat-storing material is phase-change material.
10. the defrosting control method of air conditioner according to claim 9, which is characterized in that
The phase-change material is water, paraffin, glycol water or 12 water disodium hydrogen phosphates.
11. the defrosting control method of air conditioner according to claim 1, which is characterized in that the air conditioner further include:
First shut-off valve is arranged between the indoor heat exchanger of the air conditioner and the accumulation of heat component, with the electronic expansion
Valve is in parallel.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111912079A (en) * | 2019-05-09 | 2020-11-10 | 珠海格力电器股份有限公司 | Fixed-frequency air conditioner, defrosting control method of fixed-frequency air conditioner, computer device and computer readable storage medium |
| CN110469959B (en) * | 2019-07-24 | 2022-03-29 | 青岛海尔空调器有限总公司 | Control method and device for defrosting of air conditioner and air conditioner |
| CN110469977B (en) * | 2019-07-25 | 2022-09-02 | 青岛海尔空调器有限总公司 | Control method and device for defrosting of air conditioner and air conditioner |
| CN110470015A (en) * | 2019-08-03 | 2019-11-19 | 青岛海尔空调器有限总公司 | Control method and device, air-conditioning for air-conditioner defrosting |
| CN110470020B (en) * | 2019-08-04 | 2022-02-15 | 青岛海尔空调器有限总公司 | Control method and device for defrosting of air conditioner and air conditioner |
| CN110940055B (en) * | 2019-12-16 | 2021-10-22 | 宁波奥克斯电气股份有限公司 | Heating and defrosting control method and device for air conditioner and air conditioner |
| CN111121229B (en) * | 2019-12-18 | 2022-02-01 | 宁波奥克斯电气股份有限公司 | Control method and control device of air conditioner, heat dissipation structure and air conditioner |
| CN111503818B (en) * | 2020-04-29 | 2021-12-21 | 广东美的制冷设备有限公司 | Control method of air conditioning system and air conditioning system |
| CN112432309B (en) * | 2020-11-26 | 2022-03-18 | 珠海格力电器股份有限公司 | Air conditioner and air conditioner control method |
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