CN106705304A - Air conditioner and defrosting control method of air conditioner - Google Patents
Air conditioner and defrosting control method of air conditioner Download PDFInfo
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- CN106705304A CN106705304A CN201710016346.4A CN201710016346A CN106705304A CN 106705304 A CN106705304 A CN 106705304A CN 201710016346 A CN201710016346 A CN 201710016346A CN 106705304 A CN106705304 A CN 106705304A
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- Prior art keywords
- heat exchanger
- defrost
- air
- electric heating
- temperature
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2347/00—Details for preventing or removing deposits or corrosion
- F25B2347/02—Details of defrosting cycles
-
- 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
Abstract
The invention provides an air conditioner and a defrosting control method of an air conditioner. The air conditioner comprises a compressor, an indoor heat exchanger, a throttling device, a heat accumulating assembly and a first stop valve, wherein one end of the indoor heat exchanger is connected to the compressor while an outdoor heat exchanger is connected to the other end of the indoor heat exchanger; two connectors of a four-way reversing valve communicate with the air outlet of the compressor and one end of the indoor heat exchanger while the other two connectors of the four-way reversing valve communicate with the air inlet of the compressor and one end of the outdoor heat exchanger; the throttling device is arranged between the outdoor heat exchanger and the four-way reversing valve and is connected in parallel to the heat accumulating assembly; the heat accumulating assembly comprises a heat accumulator and an electric heating piece, wherein a heat accumulating material is arranged in the heat accumulator and the electric heating piece is arranged in the heat accumulator. The air conditioner provided by the invention continuously heats while defrosts through the heat accumulating assembly so as to further improve the comfort level of an indoor environmental temperature in the defrosting process.
Description
Technical field
The present invention relates to air-conditioning technical field, in particular to the defrost control of a kind of air-conditioner and a kind of air-conditioner
Method processed.
Background technology
Defrost mode employed in the air-conditioner of correlation technique is all to carry out Hot-air blowing device using the delivery temperature of compressor
Frost, this is accomplished by by four-way reversing valve ability defrost, and when defrost is started, four-way reversing valve commutation makes outdoor heat converter
Heat release, indoor heat converter heat absorption, can cause indoor environment temperature to reduce, and in colder environment, air-conditioner operation refrigeration is followed
Ring, can cause room temperature sometimes hot and sometimes cold, necessarily increase the discomfort of user.And in air humidity is than larger environment, frequently
Defrost operation can influence 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 latter half of outer heat-exchanger is more difficult cleared, therefore when in top half, oneself finishes through defrost, it is necessary to when outdoor
The latter half of heat exchanger also after complete defrost, can make air-conditioner enter normal heating operation state, thus waste
A part of heat, and defrosting process is extended, reduce heating capacity and reduce overall heating effect.
The content of the invention
It is contemplated that at least solving one of technical problem present in prior art or correlation technique.
Therefore, it is an object of the present invention to propose a kind of air-conditioner.
It is another object of the present invention to propose a kind of defrosting control method of air-conditioner.
In view of this, an a kind of purpose of the invention, it is proposed that air-conditioner, including：Compressor；Indoor heat exchange
Device, one end of 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；Throttling arrangement, is disposed in the interior between heat exchanger and outdoor heat exchanger；Accumulation of heat component, is disposed in the outdoor
Between heat exchanger and four-way reversing valve；First stop valve, is disposed in the outdoor between heat exchanger and four-way reversing valve, with accumulation of heat component
It is in parallel；Wherein, accumulation of heat component includes：Storage heater, is provided with heat-storing material in storage heater；Electric heating part, is arranged in storage heater
Portion.
The present invention provide air-conditioner, by set accumulation of heat component improve defrost efficiency, and then improve defrost during
The comfort level of indoor environment temperature.Specifically, accumulation of heat component includes heat-storing material accommodating in storage heater and is arranged on accumulation of heat
Electric heating part in device, is preheated in advance by the electric heating part of low-power, solves in the prior art heat when there was only storage heater
Not enough problem, uses the accumulation of heat material of the too high air-conditioner provided with the too high problem of temperature, the present invention of electric heating part power
Material is by the accommodating heat-storing material in storage heater, then electric heating part is placed between heat-storing material, by adding for electric heating part
Heat causes that storage heater stores enough heats, further ensure that the efficiency of defrost and the effect of defrost, it is to avoid prior art
It is very fast that middle long-time defrost causes indoor temperature to decline, and fluctuations in indoor temperature is larger and discomfort that brought to user.Meanwhile,
By the mutual cooperation of heat-storing material and electric heating part, it is to avoid using temperature caused by single electric heating function it is quick on
Rise, and it is electrically heated it is frequent unlatching and produce rush of current, it is therefore prevented that refrigerator oil be carbonized, extend the electricity such as four-way reversing valve
The service life of device element, it is ensured that reliability, security and comfortableness that air-conditioner is integrally used, the use for lifting user is expired
Meaning degree.
Above-mentioned air-conditioner of the invention, can also have following technical characteristic：
In the above-mentioned technical solutions, it is preferable that accumulation of heat component also includes：Capillary, is disposed in the outdoor heat exchanger and four-way
Between reversal valve, connected with storage heater.
In the technical scheme, capillary is arranged in series with storage heater, by setting up capillary, further increaseization
Heat needed for frost, and then defrost efficiency is improve, the time required to shortening defrost, and then indoor environment temperature is improved, keep away
Exempt from indoor temperature caused by long-time defrost to decline, the problems such as temperature fluctuation is big.
In the above-mentioned technical solutions, it is preferable that heat-storing material is phase-change material.
In the above-mentioned technical solutions, it is preferable that phase-change material is water, paraffin, glycol water or 12 water phosphoric acid hydrogen two
Sodium.
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 absorb or release heat.Air-conditioner of the invention is a certain amount of by being equipped with storage heater
Phase-change material, during non-defrost, storage heater storage heat, the phase-change material form generation change release during defrost
Heat is accelerating defrost.Further, heat-storing material includes following at least one but is not limited thereto：Water, paraffin, ethylene glycol
The aqueous solution or 12 water disodium hydrogen phosphates, can be according to the occasion of practical situations selection preferably phase-change material in concrete application.
In the above-mentioned technical solutions, it is preferable that also include：Second stop valve, is disposed in the interior heat exchanger and outdoor heat exchange
It is in parallel with throttling arrangement between device.
In the technical scheme, filled with throttling by setting up the second stop valve between heat exchanger and outdoor heat exchanger indoors
Putting carries out parallel connection, increases caliber or pipeline number in storage heater, reduces resistance, increases electrical heating power, improves heat-storing material temperature,
By adjusting the closing of the second stop valve and then ensureing the temperature in outdoor heat exchanger, defrost efficiency is improved, improve defrost effect.
In the above-mentioned technical solutions, it is preferable that throttling arrangement is electric expansion valve.
In the technical scheme, throttling arrangement uses electric expansion valve, coordinates empty by controlling the aperture of electric expansion valve
Device is adjusted to realize defrost, to reach optimal defrost state.
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, the outlet temperature T3 of outdoor heat exchanger is detected；When outlet temperature T3 meets defrost condition, open
Electric heating part is opened, and adjusts indoor fan rotating speed and be reduced to default low wind rotating speed or indoor heat exchanger temperature is adjusted to default temperature
Degree；The running status of electric heating part is obtained, when the running status of electric heating part reaches default closed mode, electrical heating is closed
Part, meanwhile, the second stop valve is opened, the first stop valve is closed, carry out defrost；When satisfaction is default exits defrost condition, terminate
Defrost.
A kind of defrosting control method of air-conditioner that the present invention is provided, by detecting the outlet temperature of outdoor heat exchanger, sentences
It is disconnected whether to meet defrost condition, defrost pattern is not entered when defrost condition is met, open electrothermal piece and preheated, to supplement storage
The heat of hot device, while by the adjustment of rotational speed of indoor fan to low wind rotating speed, or indoor heat exchanger temperature is adjusted to preset
Temperature；Further, the running status of electric heating part is obtained in real time, when the running status of electric heating part reaches default closed mode
When, electric heating part is closed, by the real-time monitoring to electric heating part running status, it is to avoid electric heating part run time it is more long or
Temperature is higher and damages；Meanwhile, the second stop valve is opened, the first stop valve is closed, the temperature of heat-storing material is improved, by accumulation of heat
Device carries out defrost；Further, the outlet temperature of real-time detection outdoor heat exchanger or defrost run time, move back when meeting to preset
When going out defrost condition, terminate defrost.
In the prior art, being commutated by four-way reversing valve can just carry out defrost, and when defrost is started, four-way reversing valve is changed
To, making outdoor heat converter heat release, indoor heat converter heat absorption can cause indoor environment temperature to reduce, in colder environment,
Air-conditioner runs kind of refrigeration cycle, and room temperature can be caused sometimes hot and sometimes cold, increases the discomfort of user.And the air-conditioner that the application is provided
Defrosting control method, being engaged with motor warmware by heat-storing material carries out defrost, it is possible to achieve while persistently heating
Proceed defrost, and then ensure that indoor environment temperature is not in larger fluctuation, lift the comfort level of user；Further
Ground, defrosting control method of the invention does not need the frequent commutation of four-way reversing valve, and then extends four-way reversing valve and other electricity
The service life of device element, it is ensured that the reliability for using of air-conditioning, security and comfortableness, improves defrost efficiency, improves
Defrost effect, improves 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 the running status of electric heating part is obtained, when the running status of electric heating part reaches
During to default closed mode, electric heating part is closed, specifically included：Record the unlatching duration of electric heating part；When opening for electric heating part
When opening duration more than the first Preset Time, electric heating part is closed.
In the technical scheme, it is compared with the first Preset Time by the unlatching duration for recording electric heating part, is carried out
Close electric heating part.Avoid the electric heating part opening time long, caused temperature is raised too soon, bring potential safety hazard, lifting is empty
The security for adjusting device to use.
In the above-mentioned technical solutions, it is preferable that the running status of electric heating part is obtained, when the running status of electric heating part reaches
During to default closed mode, electric heating part is closed, specifically also included：Detect the surface temperature T of electric heating part；As surface temperature T
During more than or equal to the first preset temperature, electric heating part is closed.
In the technical scheme, by detecting the surface temperature of electric heating part, and then it is compared with the first preset temperature,
When the surface temperature of electric heating part is greater than or equal to the first preset temperature, electric heating part is closed, it is to avoid temperature is too high, causes electricity
The damage of heating member and the potential safety hazard brought, it is ensured that use safety.
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 preset time period of accumulated running time second of recording compressed machine
T30；When the accumulated running time for continuing to run with of compressor is to three Preset Times, the outlet temperature of outdoor heat exchanger is detected
T3, when outlet temperature difference Δ T (Δ T=T30-T3) meets the first preset temperature setting value, into defrost；Or
When the accumulated running time for continuing to run with of compressor is to four Preset Times, the outdoor heat exchanger is detected
Outlet temperature T3, when outlet temperature difference Δ T (Δ T=T30-T3) meets the second preset temperature setting value, into defrost.
In the technical scheme, judge whether to meet defrost condition by the outlet temperature T3 for detecting outdoor heat exchanger, have
Body includes：Compressor start starts timing, and recording compressed machine adds up going out for outdoor heat exchanger in full second preset time period of operation
The minimum T30 of mouthful temperature, then outdoor heat exchanger when detecting that compressor proceeds to three Preset Times outlet temperature
T3, calculates outlet temperature difference Δ T (Δ T=T30-T3) and is compared with the first preset temperature setting value, and then judge outlet
Temperature T3 time-temperature reductions at one end, meet defrost condition, into defrost；Or when the accumulative fortune for continuing to run with of 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 change 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, reduce
Energy consumption, it is ensured that the heating effect of air-conditioning, lifts the experience of user.
In the above-mentioned technical solutions, it is preferable that outlet temperature T3 meets defrost condition, specifically includes：Recording compressed machine
The Preset Time of accumulated running time the 5th；When T3 is less than or equal to the second preset temperature, then after the Preset Time of continuous service the 6th,
Into defrost.
In the technical scheme, can also in the following manner judge whether to 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 adds up to run five Preset Times,
When T3 be less than the second preset temperature when, compressor after the Preset Time of continuous service the 6th, into defrost.By this kind of mode,
Defrost regularly can be carried out to outdoor heat exchanger, it is ensured that the running status of outdoor heat exchanger.
In the above-mentioned technical solutions, it is preferable that default to exit defrost condition, specifically include：Detect entering for outdoor heat exchanger
Mouth temperature T6, when inlet temperature T6 is more than or equal to three preset temperatures, terminates defrost；Or
The inlet temperature T7 of outdoor heat exchanger is detected, when inlet temperature T7 is more than or equal to four preset temperatures, starts meter
When, after the 7th Preset Time that reruns, terminate defrost；Or
Start timing when defrost, when defrost run time reaches eight Preset Times, terminate defrost.
In the technical scheme, the defrost condition for exiting includes that following three kinds of modes are at least one but are not limited thereto,
Wherein, a kind of mode is to detect the inlet temperature T6 of outdoor heat exchanger, and inlet temperature T6 is compared with the 3rd preset temperature,
When inlet temperature T6 is more than or equal to three preset temperatures, terminate defrost, can by the inlet temperature for detecting outdoor heat exchanger
Accurately judge whether defrost can be terminated, can accurately determine the defrost end time, it is to avoid 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 7th Preset Time that reruns, terminate defrost,
It is compared with the 4th preset temperature by the inlet temperature for detecting outdoor heat exchanger, after judgement meets defrost condition, is being continued
Terminate defrost after defrost Preset Time, it is ensured that defrost effect is more thorough；Yet another approach is to be counted since when defrost
When, defrost operation duration terminates defrost after reaching preset duration, and method is simple and easy to apply.
In the above-mentioned technical solutions, it is preferable that when satisfaction is default exits defrost condition, terminate defrost, specifically include：Close
Close the second stop valve, open the first stop valve, and adjust the rotating speed before indoor fan rotating speed is increased to defrost, into heating mould
Formula.
In the technical scheme, when satisfaction exits defrost condition, the second stop valve is closed, open the first stop valve, and will
The rotating speed of indoor fan is increased to the rotating speed before defrost so that accumulation of heat heating module does not work, and air-conditioner entrance normally heats mould
Formula is heated, and indoor temperature is reached the comfort level for meeting user, improves the experience of user.
In the above-mentioned technical solutions, it is preferable that the first preset time T=a*b/c, wherein, a is the specific heat of phase-change material, b
It is the phase-change material weight, c is the power of the electric heating part.
In the technical scheme, the unlatching duration of electric heating part by phase-change material specific heat a, the weight b of phase-change material, and
The electrical heating power c of motor warmware determines, time T=a*b/c, and by taking electrical heating power 500w as an example, the first Preset Time takes
Value scope is 10 minutes to 60 minutes, and the unlatching duration of the smaller electric heating part of electrical power is more long.
In the above-mentioned technical solutions, it is preferable that the span of the first preset temperature is 0 degree Celsius to 100 degrees Celsius.
In the technical scheme, the first preset temperature is determined by phase-change material phase transformation temperature pointses T, typically higher than T but be less than
Less than 100 degrees Celsius, for example, when phase-change material is water, the span of the first preset temperature is 10 degrees Celsius to 90 degrees Celsius；
When phase-change material is paraffin, the span of the first preset temperature is 50 to 90 degrees Celsius, and phase-change material is 12 water phosphoric acid hydrogen two
During sodium, the span of the first preset temperature is 35 degrees Celsius to 50 degrees Celsius.
In the above-mentioned technical solutions, it is preferable that the span of the second Preset Time 5 minutes to 10 minutes；3rd presets
The span of time 29 minutes to 40 minutes；The span of the 4th Preset Time is 35 minutes to 50 minutes；First presets
The span of desired temperature is 0.5 degree Celsius to 2.5 degrees Celsius；The span of the second preset temperature setting value is taken the photograph for 1
Family name's degree is to 4 degrees Celsius.
In the technical scheme, since compressor start, when the accumulative operation duration of compression reaches the second Preset Time, i.e.,
In the case of preferably, the second 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；3rd Preset Time is then the accumulative operation duration of compressor, and preferred span is 29 minutes
To 40 minutes, then determine whether to meet the defrost condition that enters, outlet temperature T3 the first preset temperature setting values of foot, it is therefore preferable to
0.5 degree Celsius to 2.5 degrees Celsius, into defrost；After 4th Preset Time is then the accumulative operation of compressor 35 minutes to 50 minutes,
Determine whether to meet again and enter defrost condition the second preset temperature predetermined value of satisfaction, it is therefore preferable to 1 degree Celsius to 4 degrees Celsius, enter
Enter defrost.
In the above-mentioned technical solutions, it is preferable that the span of the 5th Preset Time is 25 minutes to 35 minutes；6th is pre-
If the span of time is 1 minute to 5 minutes；The span of the second preset temperature is -24 degrees Celsius to -22 degrees Celsius.
In the technical scheme, when the accumulative operation of compressor reaches the 5th Preset Time, preferably 25 minutes to 35 points
Zhong Hou, judges whether outlet temperature T3 is less than or equal to the second preset temperature, and the span of the second preset temperature is -24 degrees Celsius
To -22 degrees Celsius, that is, judge that outlet temperature is reduced, now compressor reruns the 6th Preset Time, it is therefore preferable to which 1 minute extremely
Enter defrost after 5 minutes.
In the above-mentioned technical solutions, it is preferable that 8 degrees Celsius to 15 degrees Celsius of the span of the 3rd preset temperature；4th
3 degrees Celsius to 6 degrees Celsius of the span of preset temperature；The span of the 7th Preset Time is 20 seconds to 50 seconds；8th is pre-
If the span of time is 5 minutes to 15 minutes.
In the technical scheme, the inlet temperature T6 that defrost condition is outdoor heat exchanger is exited default more than or equal to the 3rd warm
Degree, when the 3rd preset temperature is preferably 3 degrees Celsius to 6 degrees Celsius, terminates defrost；Or when the inlet temperature of outdoor heat exchanger
When T7 is more than or equal to four preset temperatures, at preferably 3 degrees Celsius to 6 degrees Celsius, start timing, rerun the 7th it is default when
Between, it is therefore preferable to after 20 seconds to 50 seconds, terminate defrost；Or, the timing since enter defrost, when defrost reach the 8th it is default when
Between 5 minutes to 15 minutes when, terminate defrost.Time above is better embodiment, it is not limited to this.
Additional aspect of the invention and advantage will become obvious in following description section, or by practice of the invention
Recognize.
Brief description of the drawings
Fig. 1 a show system schematic under the air-conditioner refrigeration mode of one embodiment of the invention；
Fig. 1 b show system schematic under the air conditioner heat-production pattern of one embodiment of the invention；
Fig. 1 c show schematic diagram under the air-conditioner system defrost pattern of one embodiment of the invention；
Fig. 2 shows the defrosting control method schematic flow sheet of the air-conditioner of one embodiment of the invention；
Fig. 3 a show system schematic under the air-conditioner refrigeration mode of further embodiment of the present invention；
Fig. 3 b show system schematic under the air conditioner heat-production pattern of further embodiment of the present invention；
Fig. 3 c show schematic diagram under the air-conditioner system defrost pattern of further embodiment of the present invention；
Fig. 4 shows the defrosting control method schematic flow sheet of the air-conditioner of yet another embodiment of the present invention；
Fig. 5 a show system schematic under the air-conditioner refrigeration mode of further embodiment of the present invention；
Fig. 5 b show a-quadrant enlarged diagram in Fig. 5 a；
Fig. 5 c show system schematic under the air-conditioner defrost pattern of further embodiment of the present invention；
Fig. 5 d show B regions enlarged diagram in Fig. 5 c；
Fig. 6 shows the defrosting control schematic diagram of the air-conditioner of one embodiment of the present of invention.
Wherein, the corresponding relation in Fig. 1 a to Fig. 5 d between reference and component names is：
1 compressor, 2 four-way reversing valves, 3 electric expansion valves, 4 first stop valves, 5 capillaries, 6 second stop valves, 7 threeways
Reversal valve.
Specific embodiment
It is below in conjunction with the accompanying drawings and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention
Mode is applied to be further described in detail the present invention.It should be noted that in the case where not conflicting, the implementation of the application
Feature in example and embodiment can be mutually combined.
Many details are elaborated in the following description in order to fully understand the present invention, but, the present invention may be used also
Implemented with being different from other modes described here using other, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
The defrost of a kind of air-conditioner described according to some embodiments of the invention and air-conditioner is described referring to Fig. 1 a and Fig. 6
Control method.
In one embodiment of the invention, as shown in Fig. 1 a to Fig. 1 c, it is proposed that a kind of air-conditioner, including：Compressor
1；Indoor heat exchanger, one end of indoor heat exchanger is connected with compressor 1；Outdoor heat exchanger, the other end of indoor heat exchanger and room
External heat exchanger is connected；Four-way reversing valve 2, between compressor 1 and indoor heat exchanger and outdoor heat exchanger, four-way reversing valve 2
Two orifice compressors 1 gas outlet and one end of indoor heat exchanger, the another two orifice pressure of four-way reversing valve 2
The air inlet of contracting machine 1 and one end of outdoor heat exchanger；Throttling arrangement, is disposed in the interior between heat exchanger and outdoor heat exchanger；Store
Hot component, is disposed in the outdoor between heat exchanger and four-way reversing valve 2；First stop valve 4, is disposed in the outdoor heat exchanger and is changed with four-way
To between valve 2, with accumulation of heat modules in parallel；Wherein, accumulation of heat component includes：Storage heater, is provided with heat-storing material in storage heater；Electricity adds
Warmware, is arranged on inside storage heater.
The present invention provide storage heater, by set accumulation of heat component improve defrost efficiency, and then improve defrost during
The comfort level of indoor environment temperature.Specifically, accumulation of heat component includes heat-storing material accommodating in storage heater and is arranged on accumulation of heat
Electric heating part in device, is preheated in advance by the electric heating part of low-power, solves in the prior art heat when there was only storage heater
Not enough problem, uses the accumulation of heat material of the too high air-conditioner provided with the too high problem of temperature, the present invention of electric heating part power
Material is by the accommodating heat-storing material in storage heater, then electric heating part is placed between heat-storing material, by adding for electric heating part
Heat causes that storage heater stores enough heats, further ensure that the efficiency of defrost and the effect of defrost, it is to avoid prior art
It is very fast that middle long-time defrost causes indoor temperature to decline, and fluctuations in indoor temperature is larger and discomfort that brought to user.Meanwhile,
By the mutual cooperation of heat-storing material and electric heating part, it is to avoid using temperature caused by single electric heating function it is quick on
Rise, and it is electrically heated it is frequent unlatching and produce rush of current, it is therefore prevented that refrigerator oil be carbonized, extend four-way reversing valve 2 etc.
The service life of electric elements, it is ensured that reliability, security and comfortableness that air-conditioner is integrally used, lifts the use of user
Satisfaction.
In specific implementation, as shown in Figure 1a (direction of arrow is refrigerant flow direction in figure), air-conditioner is under refrigeration mode, cold
Condenser is connected by an interface of four-way reversing valve 2 with the gas outlet of compressor 1, the air inlet phase of evaporator and compressor 1
Even, the first stop valve 4 is opened, and adjusts the aperture of electronic expansion, and the flow direction of refrigerant enters directly into condensation by four-way reversing valve 2
Device, then by returning to compressor 1 after electric expansion valve 3, evaporator, carry out the loop control of refrigeration mode.
As shown in Figure 1 b (direction of arrow is refrigerant flow direction in figure), air-conditioner is in heating mode, and four-way reversing valve 2 is changed
It is connected with the gas outlet of compressor 1 by the interface of four-way reversing valve 2 to, evaporator, the air inlet phase of condenser and compressor 1
Even, open the first stop valve 4, adjust electric expansion valve 3 aperture, refrigerant flow to flash-pot, electric expansion valve 3, condensation
Device returns to compressor 1, carries out the circulation of heating mode.
As illustrated in figure 1 c (direction of arrow is refrigerant flow direction in figure), air-conditioner is in heating mode, while carrying out defrost mould
Formula, evaporator is connected by the interface of four-way reversing valve 2 with the gas outlet of compressor 1, the air inlet phase of condenser and compressor 1
Even, the first stop valve 4 is closed, the aperture of electric expansion valve 3 is adjusted, the rotating speed of indoor fan is turned down, electric heating part is opened, is carried out
Defrost, open electric heating part Preset Time after, or electric heating part surface temperature reach preset temperature after, close electrical heating
Part, detects that the outlet temperature of condenser judges whether that satisfaction exits defrost condition, after satisfaction exits defrost condition, opens first section
Only valve 4, heighten indoor fan rotating speed, the aperture of electric expansion valve 3 are adjusted, into heating mode.Further, hairiness is also set up
Tubule 5, in parallel with the first stop valve 4 after being connected with accumulation of heat component, under defrost pattern, refrigerant is passed through after evaporator condensation heat release
Electric expansion valve 3 is crossed, condenser is left to, melted the frost of condenser while supercooling, then storage heater is throttled to through capillary 5
The second compression again of compressor 1 is returned to after heat absorption evaporation.Refrigerant (is opened to most after evaporator condensation heat release by electric expansion valve 3
Greatly), condenser is left to, in the specific embodiment of supercooling, for the control method flow of the air-conditioner shown in Fig. 1 a to Fig. 1 c
Figure, as shown in Figure 2：
Step 21, in a heating mode, detects the outlet temperature T3 of outdoor heat exchanger；
Step 22, judges whether to meet defrost condition according to outlet temperature T3, specifically includes：
Step 222, compressor 1 starts timing after starting；The preset time period of accumulated running time second of recording compressed machine 1
The outlet temperature minimum T30 of interior outdoor heat exchanger；
Step 224, when the accumulated running time for continuing to run with of compressor 1 is to three Preset Times, detection outdoor is changed
The outlet temperature T3 of hot device, when outlet temperature difference Δ T (Δ T=T30-T3) meets the first preset temperature setting value, into defrost；
Step 226, when the accumulated running time for continuing to run with of compressor 1 is to four Preset Times, detects the room
The outlet temperature T3 of external heat exchanger, when outlet temperature difference Δ T (Δ T=T30-T3) meets the second preset temperature setting value,
Into defrost；
Step 228, the Preset Time of accumulated running time the 5th of recording compressed machine 1；When T3 is less than or equal to the second default temperature
When spending, then after the Preset Time of continuous service the 6th, into defrost；
Step 23, defrost pattern is not entered when defrost condition is met, and opens electric heating part, and adjust indoor fan rotating speed
It is reduced to default low wind rotating speed or indoor heat exchanger temperature is adjusted to preset temperature；
Step 24, obtains the running status of electric heating part, specifically includes：
Step 242, records the unlatching duration of electric heating part；
Step 244, when the unlatching duration of electric heating part is more than the first Preset Time, closes electric heating part；
Step 246, detects the surface temperature T of electric heating part；
Step 248, when surface temperature T is more than or equal to the first preset temperature, closes electric heating part；
Step 25, when the running status of electric heating part reaches default closed mode, closes electric heating part, meanwhile, close
First stop valve 4, carries out defrost；When satisfaction is default exits defrost condition, terminate defrost；
Step 26, detects whether to meet defrost condition, specifically includes：
Step 262, detects the inlet temperature T6 of outdoor heat exchanger, when inlet temperature T6 is more than or equal to the 3rd preset temperature
When, terminate defrost；
Step 264, detects the inlet temperature T7 of outdoor heat exchanger, when inlet temperature T7 is more than or equal to the 4th preset temperature
When, start timing, after the 7th Preset Time that reruns, terminate defrost；
Step 266, timing is started when defrost, when defrost run time reaches eight Preset Times, terminates defrost；
Step 27, when satisfaction is default exits defrost condition, opens the first stop valve 4, and adjust indoor fan rotating speed liter
Rotating speed up to before defrost, into heating mode.
A kind of defrosting control method of air-conditioner that the present invention is provided, by detecting the outlet temperature of outdoor heat exchanger, sentences
It is disconnected whether to meet defrost condition, defrost pattern is not entered when defrost condition is met, open electrothermal piece and preheated, to supplement storage
The heat of hot device, while by the adjustment of rotational speed of indoor fan to low wind rotating speed, or indoor heat exchanger temperature is adjusted to preset
Temperature；Further, the running status of electric heating part is obtained in real time, when the running status of electric heating part reaches default closed mode
When, electric heating part is closed, by the real-time monitoring to electric heating part running status, it is to avoid electric heating part run time it is more long or
Temperature is higher and damages；Meanwhile, the first stop valve 4 is closed, the temperature of heat-storing material is improved, defrost is carried out by storage heater；Enter
One step ground, the outlet temperature or defrost run time of real-time detection outdoor heat exchanger, when satisfaction is default exits defrost condition,
Terminate defrost.
In the prior art, being commutated by four-way reversing valve 2 can just carry out defrost, and when defrost is started, four-way reversing valve 2 is changed
To, making outdoor heat converter heat release, indoor heat converter heat absorption can cause indoor environment temperature to reduce, in colder environment,
Air-conditioner runs kind of refrigeration cycle, and room temperature can be caused sometimes hot and sometimes cold, increases the discomfort of user.And the air-conditioner that the application is provided
Defrosting control method, being engaged with motor warmware by heat-storing material carries out defrost, it is possible to achieve while persistently heating
Proceed defrost, and then ensure that indoor environment temperature is not in larger fluctuation, lift the comfort level of user；Further
Ground, defrosting control method of the invention do not need four-way reversing valve 2 frequent commutation, and then extend four-way reversing valve 2 and other
The service life of electric elements, it is ensured that the reliability for using of air-conditioning, security and comfortableness, improves defrost efficiency, changes
It has been apt to defrost effect, has improve users' satisfaction degree.
One embodiment of the present of invention, as shown in Fig. 3 a to 3c, air-conditioner includes：Compressor 1；Indoor heat exchanger, it is indoor
One end of heat exchanger is connected with compressor 1；Outdoor heat exchanger, the other end of indoor heat exchanger is connected with outdoor heat exchanger；Four-way
Reversal valve 2, between compressor 1 and indoor heat exchanger and outdoor heat exchanger, two orifices compression of four-way reversing valve 2
The gas outlet of machine 1 and one end of indoor heat exchanger, the air inlet of the another two orifice compressor 1 of four-way reversing valve 2 and room
One end of external heat exchanger；Throttling arrangement, is disposed in the interior between heat exchanger and outdoor heat exchanger；Accumulation of heat component, is disposed in the outdoor
Between heat exchanger and four-way reversing valve 2；First stop valve 4, is disposed in the outdoor between heat exchanger and four-way reversing valve 2, with accumulation of heat
Modules in parallel；Wherein, accumulation of heat component includes：Storage heater, is provided with heat-storing material in storage heater；Electric heating part, is arranged on accumulation of heat
Inside device；Also include the second stop valve 6, be disposed in the interior between heat exchanger and outdoor heat exchanger, it is in parallel with throttling arrangement.
In specific embodiment, as shown in Figure 3 a, (direction of arrow is refrigerant flow direction in figure), air-conditioner is in refrigeration mode
Under, condenser is connected by an interface of four-way reversing valve 2 with the gas outlet of compressor 1, the air inlet of evaporator and compressor 1
Mouth is connected, and the first stop valve 4 is opened, and closes the second stop valve 6, adjusts the aperture of electronic expansion, and the flow direction of refrigerant is by four-way
Reversal valve 2 enters directly into condenser, then by returning to compressor 1 after electric expansion valve 3, evaporator, carries out refrigeration mode
Loop control.
As shown in Figure 3 b (direction of arrow is refrigerant flow direction in figure), air-conditioner is in heating mode, and four-way reversing valve 2 is changed
It is connected with the gas outlet of compressor 1 by the interface of four-way reversing valve 2 to, evaporator, the air inlet phase of condenser and compressor 1
Even, open the first stop valve 4, close the second stop valve 6, adjust electric expansion valve 3 aperture, refrigerant flow to flash-pot,
Electric expansion valve 3, condenser returns to compressor 1, carries out the circulation of heating mode.
As shown in Figure 3 c (direction of arrow is refrigerant flow direction in figure), air-conditioner is in heating mode, while carrying out defrost mould
Formula, evaporator is connected by the interface of four-way reversing valve 2 with the gas outlet of compressor 1, the air inlet phase of condenser and compressor 1
Even, the first stop valve 4 is closed, the second stop valve 6 is opened, the aperture of electric expansion valve 3 is adjusted, the rotating speed of indoor fan is turned down,
Electric heating part is opened, defrost is carried out, after opening electric heating part Preset Time, or the surface temperature of electric heating part reaches default temperature
After degree, electric heating part is closed, detect that the outlet temperature of condenser judges whether that satisfaction exits defrost condition, satisfaction exits defrost bar
After part, the first stop valve 4 is opened, closes the second stop valve 6, heighten indoor fan rotating speed, adjust the aperture of electric expansion valve 3,
Into heating mode.Further, capillary 5 is additionally provided with, in parallel with the first stop valve 4 after being connected with accumulation of heat component, defrost
Under pattern, refrigerant, by electric expansion valve 3, is left to condenser after evaporator condensation heat release, by condenser while supercooling
Frost thawing, then through capillary 5 be throttled to storage heater heat absorption evaporation after return to the second compression again of compressor 1.
In specific embodiment, for the control method flow chart of the air-conditioner shown in Fig. 3 a to Fig. 3 c, as shown in Figure 4：
Step 41, in a heating mode, detects the outlet temperature T3 of outdoor heat exchanger；
Step 42, judges whether to meet defrost condition according to outlet temperature T3, specifically includes：
Step 422, compressor 1 starts timing after starting；The preset time period of accumulated running time second of recording compressed machine 1
The outlet temperature minimum T30 of interior outdoor heat exchanger；
Step 424, when the accumulated running time for continuing to run with of compressor 1 is to three Preset Times, detection outdoor is changed
The outlet temperature T3 of hot device, when outlet temperature difference Δ T (Δ T=T30-T3) meets the first preset temperature setting value, into defrost；
Step 426, when the accumulated running time for continuing to run with of compressor 1 is to four Preset Times, detects the room
The outlet temperature T3 of external heat exchanger, when outlet temperature difference Δ T (Δ T=T30-T3) meets the second preset temperature setting value,
Into defrost；
Step 428, the Preset Time of accumulated running time the 5th of recording compressed machine 1；When T3 is less than or equal to the second default temperature
When spending, then after the Preset Time of continuous service the 6th, into defrost；
Step 43, defrost pattern is not entered when defrost condition is met, and opens electric heating part, and adjust indoor fan rotating speed
It is reduced to default low wind rotating speed or indoor heat exchanger temperature is adjusted to preset temperature；
Step 44, obtains the running status of electric heating part, specifically includes：
Step 442, records the unlatching duration of electric heating part；
Step 444, when the unlatching duration of electric heating part is more than the first Preset Time, closes electric heating part；
Step 446, detects the surface temperature T of electric heating part；
Step 448, when surface temperature T is more than or equal to the first preset temperature, closes electric heating part；
Step 45, when the running status of electric heating part reaches default closed mode, closes electric heating part, meanwhile, close
First stop valve 4, opens the second stop valve 6, carries out defrost；When satisfaction is default exits defrost condition, terminate defrost；
Step 46, detects whether to meet defrost condition, specifically includes：
Step 462, detects the inlet temperature T6 of outdoor heat exchanger, when inlet temperature T6 is more than or equal to the 3rd preset temperature
When, terminate defrost；
Step 464, detects the inlet temperature T7 of outdoor heat exchanger, when inlet temperature T7 is more than or equal to the 4th preset temperature
When, start timing, after the 7th Preset Time that reruns, terminate defrost；
Step 466, timing is started when defrost, when defrost run time reaches eight Preset Times, terminates defrost；
Step 47, when satisfaction is default exits defrost condition, opens the first stop valve 4, closes the second stop valve 6, and adjust
Section indoor fan rotating speed is increased to the rotating speed before defrost, into heating mode.
A kind of one embodiment of the present of invention, as shown in Fig. 5 a to Fig. 5 d, it is proposed that air-conditioner, including：Compressor 1；Room
Interior heat exchanger, one end of indoor heat exchanger is connected with compressor 1；Outdoor heat exchanger, the other end and the outdoor of indoor heat exchanger are changed
Hot device is connected；Four-way reversing valve 2, between compressor 1 and indoor heat exchanger and outdoor heat exchanger, the two of four-way reversing valve 2
The gas outlet of individual orifice compressor 1 and one end of indoor heat exchanger, the another two orifice compressor of four-way reversing valve 2
1 air inlet and one end of outdoor heat exchanger；Throttling arrangement, is disposed in the interior between heat exchanger and outdoor heat exchanger；Accumulation of heat group
Part, is disposed in the outdoor between heat exchanger and four-way reversing valve 2；First stop valve 4, is disposed in the outdoor heat exchanger and four-way reversing valve
Between 2, with accumulation of heat modules in parallel；Wherein, accumulation of heat component includes：Storage heater, is provided with heat-storing material in storage heater；Electrical heating
Part, is arranged on inside storage heater.Wherein, the first stop valve 4 is three-way diverter valve 7.
The present invention provide storage heater, by set accumulation of heat component improve defrost efficiency, and then improve defrost during
The comfort level of indoor environment temperature.Specifically, accumulation of heat component includes heat-storing material accommodating in storage heater and is arranged on accumulation of heat
Electric heating part in device, is preheated in advance by the electric heating part of low-power, solves in the prior art heat when there was only storage heater
Not enough problem, uses the accumulation of heat material of the too high air-conditioner provided with the too high problem of temperature, the present invention of electric heating part power
Material is by the accommodating heat-storing material in storage heater, then electric heating part is placed between heat-storing material, by adding for electric heating part
Heat causes that storage heater stores enough heats, further ensure that the efficiency of defrost and the effect of defrost, it is to avoid prior art
It is very fast that middle long-time defrost causes indoor temperature to decline, and fluctuations in indoor temperature is larger and discomfort that brought to user.Meanwhile,
By the mutual cooperation of heat-storing material and electric heating part, it is to avoid using temperature caused by single electric heating function it is quick on
Rise, and it is electrically heated it is frequent unlatching and produce rush of current, it is therefore prevented that refrigerator oil be carbonized, extend four-way reversing valve 2 etc.
The service life of electric elements, it is ensured that reliability, security and comfortableness that air-conditioner is integrally used, lifts the use of user
Satisfaction.
In specific implementation, as shown in figure 5a and 5b (direction of arrow is refrigerant flow direction in figure), of three-way diverter valve 7 connects
Mouth is connected with condenser, and an interface is connected with accumulation of heat component, and another interface is connected with four-way reversing valve 2, at air-conditioner
In under refrigeration mode, three-way diverter valve 7 causes that condenser and the orifice of four-way reversing valve 2, condenser pass through four-way reversing valve 2
Interface be connected with the gas outlet of compressor 1, evaporator is connected with the air inlet of compressor 1, and regulation electronic expansion is opened
Degree, the flow direction of refrigerant enters directly into condenser by three-way diverter valve 7 and four-way reversing valve 2, then by electric expansion valve 3,
Compressor 1 is being returned to after evaporator, the loop control of refrigeration mode is being carried out.
As shown in figures 5 c and 5d (in figure the direction of arrow be refrigerant flow direction), an interface and condenser of three-way diverter valve 7
It is connected, an interface is connected with accumulation of heat component, and another interface is connected with four-way reversing valve 2, air-conditioner is in heating mode, together
Shi Jinhang defrost patterns, the condenser of three-way diverter valve 7 is connected with accumulation of heat component, the interface that evaporator passes through four-way reversing valve 2
Gas outlet with compressor 1 is connected, and condenser is connected with the air inlet of compressor 1, closes the first stop valve 4, and adjustment electronics is swollen
The aperture of swollen valve 3, turns down the rotating speed of indoor fan, opens electric heating part, carries out defrost, after opening electric heating part Preset Time,
Or after the surface temperature of electric heating part reaches preset temperature, electric heating part is closed, detect that the outlet temperature of condenser judges to be
No satisfaction exits defrost condition, after satisfaction exits defrost condition, opens the first stop valve 4, heightens indoor fan rotating speed, adjustment electricity
The aperture of sub- expansion valve 3, into heating mode.Further, capillary 5 is additionally provided with, with first after being connected with accumulation of heat component
Stop valve 4 is in parallel, and under defrost pattern, refrigerant by electric expansion valve 3, is left to condenser, in mistake after evaporator condensation heat release
The frost of condenser is melted while cold, then returned to compressor 1 and is pressed again after being throttled to storage heater heat absorption evaporation through capillary 5
Contracting.
In one embodiment of the present of invention, it is preferable that the first preset time T=a*b/c, wherein, a is the ratio of phase-change material
Heat, b is the phase-change material weight, and c is the power of the electric heating part.The unlatching duration of electric heating part is by phase-change material specific heat
A, the weight b of phase-change material, and motor warmware electrical heating power c determine, time T=a*b/c, with electrical heating power 500w
As a example by, the span of the first Preset Time is 10 minutes to 60 minutes, and the unlatching duration of the smaller electric heating part of electrical power is more long.
In one embodiment of the present of invention, it is preferable that the span of the first preset temperature is 0 degree Celsius to 100 Celsius
Degree.First preset temperature determines by phase-change material phase transformation temperature pointses T, typically higher than T but less than less than 100 degrees Celsius, for example, phase
When becoming material into water, the span of the first preset temperature is 10 degrees Celsius to 90 degrees Celsius；When phase-change material is paraffin, first
The span of preset temperature is 50 to 90 degrees Celsius, and when phase-change material is 12 water disodium hydrogen phosphate, first preset temperature takes
Value scope is 35 degrees Celsius to 50 degrees Celsius.
In one embodiment of the present of invention, starting since compressor 1, preset when the accumulative operation duration of compression reaches second
Time, i.e., preferably in the case of, the second Preset Time value is 5 minutes to 10 minutes, records outdoor in the second Preset Time
The minimum T30 of the outlet temperature of heat exchanger；3rd Preset Time is then that compressor 1 adds up operation duration, preferred value model
It is 29 minutes to 40 minutes to enclose, then determines whether to meet the defrost condition that enters, outlet temperature T3 the first preset temperature setting values of foot,
Preferably 0.5 degree Celsius to 2.5 degrees Celsius, into defrost；4th Preset Time is then the accumulative operation of compressor 1 35 minutes extremely
After 50 minutes, then determine whether to meet into defrost condition the second preset temperature predetermined value of satisfaction, it is therefore preferable to 1 degree Celsius to 4
Degree Celsius, into defrost.
In one embodiment of the present of invention, the 5th Preset Time is reached when compressor 1 adds up operation, it is therefore preferable to 25 minutes
To after 35 minutes, judge whether outlet temperature T3 is less than or equal to the second preset temperature, the span of the second preset temperature is -24
Degree Celsius to -22 degrees Celsius, that is, judge that outlet temperature is reduced, now compressor 1 reruns the 6th Preset Time, it is therefore preferable to
Enter defrost after 1 minute to 5 minutes.
In one embodiment of the present of invention, exit the inlet temperature T6 that defrost condition is outdoor heat exchanger and be more than or equal to the 3rd
Preset temperature, when the 3rd preset temperature is preferably 3 degrees Celsius to 6 degrees Celsius, terminates defrost；Or entering when outdoor heat exchanger
When mouthful temperature T7 is more than or equal to four preset temperatures, at preferably 3 degrees Celsius to 6 degrees Celsius, start timing, rerun the 7th
Preset Time, it is therefore preferable to after 20 seconds to 50 seconds, terminates defrost；Or, since enter defrost timing, when defrost reaches the 8th
During Preset Time 5 minutes to 15 minutes, terminate defrost.Time above is better embodiment, it is not limited to this.
As shown in fig. 6, the defrosting control schematic diagram of the air-conditioner of one embodiment of the present of invention, defrost is met when detecting
After condition, into defrost pattern, inner blower turns down rotating speed, while detecting the air outlet initial temperature T1 of indoor fan, reduces room
The rotating speed of inner blower raises 5 DEG C to T2, or is reduced to minimum speed, during according to 23 DEG C of T2-T1 ＞, reduces the frequency of compressor
Rate, opens electric heating part surface temperature to 8 minutes or electric heating just and rises to 80 degrees Celsius and (determined with specific reference to heat-storing material
It is fixed) when, motor warmware, then persistently defrost 5 minutes are closed, terminate defrost.
In the present invention, term " multiple " then refers to two or more, unless otherwise clearly restriction.Term " peace
The term such as dress ", " connected ", " connection ", " fixation " all should be interpreted broadly, for example, " connection " can be fixedly connected, it is also possible to
It is to be detachably connected, or is integrally connected；" connected " can be joined directly together, it is also possible to be indirectly connected to by intermediary.It is right
For one of ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be as the case may be understood.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Mean that the specific features, structure, material or the feature that are described with reference to the embodiment or example are contained in of the invention at least one real
In applying example or example.In this manual, the schematic representation to above-mentioned term is not necessarily referring to identical embodiment or reality
Example.And, the specific features of description, structure, material or feature can in one or more any embodiments or example with
Suitable mode is combined.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (18)
1. a kind of air-conditioner, it is characterised in that including：
Compressor；
Indoor heat exchanger, so one end of indoor heat exchanger is connected with the compressor；
Outdoor heat exchanger, the other end of the indoor heat exchanger is connected with the outdoor heat exchanger；
Four-way reversing valve, between the compressor and the indoor heat exchanger and the outdoor heat exchanger, the four-way is changed
To valve two orifices described in compressor gas outlet and one end of the indoor heat exchanger, the four-way reversing valve it is another
One end of the air inlet of compressor and the outdoor heat exchanger described in two orifices；
Throttling arrangement, is arranged between the indoor heat exchanger and the outdoor heat exchanger；
Accumulation of heat component, is arranged between the outdoor heat exchanger and the four-way reversing valve；
First stop valve, is arranged between the outdoor heat exchanger and the four-way reversing valve, with the accumulation of heat modules in parallel；
Wherein, the accumulation of heat component includes：
Storage heater, heat-storing material is provided with the storage heater；
Electric heating part, is arranged on inside the storage heater.
2. air-conditioner according to claim 1, it is characterised in that the accumulation of heat component also includes：
Capillary, is arranged between the outdoor heat exchanger and the four-way reversing valve, is connected with the storage heater.
3. air-conditioner according to claim 1, it is characterised in that
The heat-storing material is phase-change material.
4. air-conditioner according to claim 3, it is characterised in that
The phase-change material is water, paraffin, glycol water or 12 water disodium hydrogen phosphates.
5. air-conditioner according to any one of claim 1 to 4, it is characterised in that also include：
Second stop valve, is arranged between the indoor heat exchanger and the outdoor heat exchanger, in parallel with the throttling arrangement.
6. air-conditioner according to any one of claim 1 to 4, it is characterised in that
The throttling arrangement is electric expansion valve.
7. a kind of defrosting control method of air-conditioner, it is characterised in that the defrosting control method of the air-conditioner includes：
In a heating mode, the outlet temperature T3 of the outdoor heat exchanger is detected；
When the outlet temperature T3 meets defrost condition, open electric heating part, and adjust indoor fan rotating speed be reduced to it is default
The indoor heat exchanger temperature is adjusted to preset temperature by low wind rotating speed；
The running status of the electric heating part is obtained, when the running status of the electric heating part reaches default closed mode, is closed
The electric heating part is closed, meanwhile, the second stop valve is opened, the first stop valve is closed, carry out defrost；
When satisfaction is default exits defrost condition, terminate defrost.
8. the defrosting control method of air-conditioner according to claim 7, it is characterised in that the acquisition electric heating part
Running status, when the running status of the electric heating part reaches default closed mode, close the electric heating part, specific bag
Include：
Record the unlatching duration of the electric heating part；
When the unlatching duration of the electric heating part is more than the first Preset Time, the electric heating part is closed.
9. the defrosting control method of air-conditioner according to claim 7, it is characterised in that the acquisition electric heating part
Running status, when the running status of the electric heating part reaches default closed mode, close the electric heating part, it is specific also
Including：
Detect the surface temperature T of the electric heating part；
When the surface temperature T is more than or equal to the first preset temperature, the electric heating part is closed.
10. the defrosting control method of air-conditioner according to claim 7, it is characterised in that the outlet temperature T3 meets
Defrost condition, specifically includes：
Start timing after compressor start；
The outlet temperature for recording the outdoor heat exchanger in the preset time period of accumulated running time second of the compressor is minimum
Value T30；
When the accumulated running time for continuing to run with of the compressor is to three Preset Times, the outdoor heat exchanger is detected
Outlet temperature T3, when outlet temperature difference Δ T (Δ T=T30-T3) meets the first preset temperature setting value, into defrost；Or
When the accumulated running time for continuing to run with of the compressor is to four Preset Times, the outdoor heat exchanger is detected
Outlet temperature T3, when outlet temperature difference Δ T (Δ T=T30-T3) meets the second preset temperature setting value, into defrost.
The defrosting control method of 11. air-conditioners according to claim 7, it is characterised in that the outlet temperature T3 meets
Defrost condition, specifically includes：
Record the Preset Time of accumulated running time the 5th of the compressor；
When the T3 is less than or equal to the second preset temperature, then after the Preset Time of continuous service the 6th, into defrost.
The defrosting control method of 12. air-conditioner according to any one of claim 7 to 11, it is characterised in that described pre-
If exiting defrost condition, specifically include：
The inlet temperature T6 of the outdoor heat exchanger is detected, when the inlet temperature T6 is more than or equal to three preset temperatures, knot
Fasciculation frost；Or
The inlet temperature T7 of the outdoor heat exchanger is detected, when the inlet temperature T7 is more than or equal to four preset temperatures, is opened
Beginning timing, after the 7th Preset Time that reruns, terminates defrost；Or
Start timing when defrost, when defrost run time reaches eight Preset Times, terminate defrost.
The defrosting control method of 13. air-conditioners according to claim 7, it is characterised in that described to be exited when satisfaction is default
During defrost condition, terminate defrost, specifically include：
The second stop valve is closed, the first stop valve is opened, and adjusts the rotating speed before indoor fan rotating speed is increased to defrost, into system
Heat pattern.
The defrosting control method of 14. air-conditioners according to claim 8, it is characterised in that
First preset time T=a*b/c, wherein, a is the specific heat of phase-change material, and b is the phase-change material weight, and c is institute
State the power of electric heating part.
The defrosting control method of 15. air-conditioners according to claim 9, it is characterised in that
The span of first preset temperature is 0 degree Celsius to 100 degrees Celsius.
The defrosting control method of 16. air-conditioners according to claim 10, it is characterised in that
The span of second Preset Time 5 minutes to 10 minutes；
The span of the 3rd Preset Time 29 minutes to 40 minutes；
The span of the 4th Preset Time is 35 minutes to 50 minutes；
The span of the first preset temperature setting value is 0.5 degree Celsius to 2.5 degrees Celsius；
The span of the second preset temperature setting value is 1 degree Celsius to 4 degrees Celsius.
The defrosting control method of 17. air-conditioners according to claim 11, it is characterised in that
The span of the 5th Preset Time is 25 minutes to 35 minutes；
The span of the 6th Preset Time is 1 minute to 5 minutes；
The span of second preset temperature is -24 degrees Celsius to -22 degrees Celsius.
The defrosting control method of 18. air-conditioners according to claim 12, it is characterised in that
8 degrees Celsius to 15 degrees Celsius of the span of the 3rd preset temperature；
3 degrees Celsius to 6 degrees Celsius of the span of the 4th preset temperature；
The span of the 7th Preset Time is 20 seconds to 50 seconds；
The span of the 8th Preset Time is 5 minutes to 15 minutes.
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| CN108120049A (en) * | 2017-12-27 | 2018-06-05 | 广东申菱环境系统股份有限公司 | Integrated air source heat pump system |
| CN108758973A (en) * | 2018-05-24 | 2018-11-06 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method |
| CN110285482A (en) * | 2019-07-05 | 2019-09-27 | 珠海格力电器股份有限公司 | Accumulation of heat control method, device and the readable storage medium storing program for executing of storage heating equipment |
| CN110470009A (en) * | 2019-08-02 | 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 |
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| CN111503815A (en) * | 2020-04-29 | 2020-08-07 | 广东美的制冷设备有限公司 | Defrosting control method of air conditioning system and air conditioning system |
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| CN111503826B (en) * | 2020-04-29 | 2022-05-10 | 广东美的制冷设备有限公司 | Defrosting control method of air conditioning system and air conditioning system |
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Application publication date: 20170524 |