CN106642595A - Air conditioner and defrosting control method thereof - Google Patents
Air conditioner and defrosting control method thereof Download PDFInfo
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- CN106642595A CN106642595A CN201710016553.XA CN201710016553A CN106642595A CN 106642595 A CN106642595 A CN 106642595A CN 201710016553 A CN201710016553 A CN 201710016553A CN 106642595 A CN106642595 A CN 106642595A
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- Prior art keywords
- heat exchanger
- defrost
- compressor
- air
- electric heating
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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
- 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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—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
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/34—Heater, e.g. gas burner, electric air heater
Abstract
The invention provides an air conditioner and a defrosting control method thereof. The air conditioner comprises a compressor, an indoor heat exchanger, an outdoor heat exchanger, a four-way reversing valve, a throttling device, a heat accumulation component and a first cut-off valve, wherein one end of the indoor heat exchanger is connected with the compressor; the other end of the indoor heat exchanger is connected with the outdoor heat exchanger; the four-way reversing valve is positioned among the compressor, the indoor heat exchanger and the outdoor heat exchanger; the throttling device is arranged between the indoor heat exchanger and the outdoor heat exchanger; the heat accumulation component is arranged between an air inlet of the compressor and one interface of the four-way reversing valve; the first cut-off valve is arranged between the compressor and the four-way reversing valve and is connected with the heat accumulation component in parallel; the heat accumulation component comprises a heat accumulation device and an electric heating piece, wherein a heat accumulation material is arranged in the heat accumulation device; the electric heating piece is arranged inside the heat accumulation device. The air conditioner provided by the invention has the benefit that as the heat accumulation material and the electric heating piece are accommodated in the heat accumulation device, the reliability, the safety and the comfort of overall use of the air conditioner are improved.
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 change-over valve ability defrost, and when defrost is started, four-way change-over 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 wet degree Celsius of air is than larger environment,
Frequently defrost operation can affect four-way change-over valve and the service life of other electrical parts.In addition, during air-conditioner defrost, by
Frost in the latter half of outdoor heat converter is more difficult cleared, therefore when the own Jing defrosts of top half are finished, it is necessary to wait until
The latter half of outdoor heat converter also after complete defrost, can make air-conditioner enter normal heating operation state, thus
A part of heat is wasted, and extends defrosting process, reduced 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.
For this purpose, it is an object of the present invention to proposing a kind of air-conditioner.
Further object is that proposing 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 change-over valve, between compressor and indoor heat exchanger and outdoor heat exchanger, two orifices of four-way change-over 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 change-over 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 arranged on compression
Between the air inlet of machine and four-way change-over valve interface；First stop valve, is arranged between compressor and four-way change-over valve,
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
Inside the storage heater.
The air-conditioner that the present invention is provided, by accumulation of heat device assembly the air inlet of compressor and one of four-way change-over valve are arranged on
Between interface, by arranging accumulation of heat component the efficiency of defrost is improved, and then improve the comfortable of indoor environment temperature during defrost
Degree.Specifically, accumulation of heat component includes the heat-storing material housed in storage heater and the electric heating part being arranged in storage heater, passes through
Lower powered electric heating part is preheated in advance, shortage of heat when solving the problems, such as there was only storage heater in prior art, is added using electricity
The heat-storing material of the too high air-conditioner provided with the too high problem of temperature, the present invention of warmware power in storage heater by housing
Heat-storing material, then electric heating part is placed between heat-storing material, cause storage heater storage enough by the heating of electric heating part
Heat, further ensure that the efficiency of defrost and the effect of defrost, it is to avoid long-time defrost in prior art causes interior
Temperature drop is very fast, and fluctuations in indoor temperature is larger and discomfort that bring to user.Meanwhile, by heat-storing material and electrical heating
Part cooperates, it is to avoid using temperature rapid increase caused by single electric heating function, and electrically heated frequently opens
Open and produce rush of current, it is therefore prevented that refrigerator oil is carbonized, and extends the service life of the electric elements such as four-way change-over valve, it is ensured that
Reliability, security and comfortableness that air-conditioner is integrally used, lift the user satisfaction of user.
Above-mentioned air-conditioner of the invention, can also have following technical characteristic：
In above-mentioned technical proposal, it is preferable that accumulation of heat component also includes：Capillary, is arranged on compressor and commutates with four-way
Between valve, connect with storage heater.
In the technical scheme, it is preferable that storage heater has been arranged in series capillary, by setting up capillary, further
Increase the heat needed for defrost, and then improve defrost efficiency, the time required to shortening defrost, and then improve indoor environment temperature
Degree, it is to avoid indoor temperature declines caused by long-time defrost, the problems such as temperature fluctuation is big.
In above-mentioned technical proposal, it is preferable that heat-storing material is phase-change material.
In above-mentioned technical proposal, it is preferable that phase-change material is water, paraffin, glycol water or 12 water phosphoric acid hydrogen two
Sodium.
In the technical scheme, it is preferable that heat-storing material adopts phase-change material, led to using the physical characteristic of phase-change material
Cross the physical aspect and then absorption or releasing heat for changing phase-change material.The air-conditioner of the present invention in storage heater by being equipped with
A certain amount of phase-change material, during non-defrost, storage heater storage heat, the phase-change material form generation during defrost
Change discharges heat to accelerate defrost.Further, heat-storing material includes following at least one but is not limited thereto：Water, stone
Wax, glycol water or 12 water disodium hydrogen phosphates, can select preferably in concrete application according to the occasion of practical situations
Phase-change material.
In above-mentioned technical proposal, it is preferable that throttling arrangement is electric expansion valve.
In the technical scheme, it is preferable that throttling arrangement adopts electric expansion valve, by the aperture for controlling electric expansion valve
Air-conditioner is coordinated to realize defrost, to reach optimal defrost state.
In any of the above-described technical scheme, it is preferable that also include：Second stop valve, is disposed in the interior heat exchanger and accumulation of heat
It is in parallel with throttling arrangement between component.
In the technical scheme, it is preferable that by setting up the second stop valve between heat exchanger and outdoor heat exchanger indoors
In parallel, caliber or pipeline number in increasing storage heater are carried out with throttling arrangement, resistance is reduced, electrical heating power is increased, accumulation of heat is improved
Material temperature, by the temperature further ensured in outdoor heat exchanger of closing for adjusting the second stop valve, raising defrost efficiency improves
Defrost effect.
In above-mentioned technical proposal, it is preferable that also include：First stop valve is triple valve, and three interfaces of triple valve divide
One interface of the air inlet, four-way change-over valve not with compressor and one end of storage heater are connected, the other end of storage heater with
The air inlet of compressor is connected.
In the technical scheme, it is preferable that the first stop valve selects triple valve, three interfaces of triple valve respectively with four-way
The air inlet of reversal valve, accumulation of heat component and compressor is connected, and realizes commutating by regulating three-way valve so that four-way change-over valve point
Do not connect with accumulation of heat component, or be connected with the air inlet of the compressor, realize the regulation between air-conditioner difference in functionality.
Another object of the present invention also proposed a kind of defrosting control method of air-conditioner, including：In a heating mode,
Outlet temperature T3 of detection outdoor heat exchanger；When outlet temperature T3 meets defrost condition, triple valve is adjusted, connect accumulation of heat group
Part, opens electric heating part, and adjusts indoor fan rotating speed and be reduced to default low wind rotating speed or be adjusted to indoor heat exchanger temperature
Preset temperature；The running status of electric heating part is obtained, when the running status of electric heating part reaches default closed mode, electricity is closed
Heating member, meanwhile, triple valve, connection compressor inlet and cross valve are adjusted, carry out defrost；Defrost bar is exited when meeting to preset
During part, terminate defrost.
A kind of defrosting control method of air-conditioner that the present invention is provided, detects outlet temperature T3 of outdoor heat exchanger, meets
During defrost condition, three-way diverter valve is adjusted so that accumulation of heat component is connected with four-way change-over valve, electric heating part is opened, by electricity
The heat of heating and storage heater storage carries out defrost to outdoor heat exchanger together, while turning down the rotating speed of indoor fan；In defrost
During, the running status of real-time monitoring electric heating part, when the running status of electric heating part reaches default closed mode, is closed
Electric heating part, while adjusting triple valve, connects compressor inlet and four-way change-over valve, continues defrost, by electric heating part
The real-time monitoring of state, it is ensured that the operation safety of electric heating part, it is to avoid the electric heating part heat time is long, temperature is too high and band
The potential safety hazard come, improves the use reliability of air-conditioner；Meanwhile, by the auxiliary heating of electric heating part, match somebody with somebody with storage heater
Close and realize that air-conditioner can be heated persistently while defrost is carried out, also shortening carries out the time of defrost only with storage heater,
Improve the experience of user, improve defrost efficiency, improve can defrost effect.
A kind of defrosting control method of the air-conditioner provided according to the present invention, can also have following technical characteristic：
In above-mentioned technical proposal, 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：The unlatching duration of record 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 recording the unlatching duration of 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, lifted empty
The security for adjusting device to use.
In above-mentioned technical proposal, 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：Surface temperature T of detection electric heating part；When 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 using safety.
In above-mentioned technical proposal, 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
Degree 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 outlet of outdoor heat exchanger is detected
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, by detecting that outlet temperature T3 of outdoor heat exchanger judges whether to meet defrost condition, have
Body includes：Compressor start starts timing, and recording compressed machine adds up to run going out for outdoor heat exchanger in full second preset time period
The minimum T30 of mouthful temperature, then the outlet temperature of outdoor heat exchanger when detecting that compressor proceeds to three Preset Times
T3, calculates outlet temperature difference Δ T (Δ T=T30-T3) and is compared with the first preset temperature setting value, and then judges outlet
At one end time-temperature is reduced temperature T3, defrost condition is met, into defrost；Or when the accumulative fortune for continuing to run with of compressor
When the row time is to four Preset Times, outlet temperature T3 of the outdoor heat exchanger, outlet temperature difference Δ T (the Δ T=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, in time defrost can be carried out to outdoor heat exchanger, reduce
Energy consumption, it is ensured that the heating effect of air-conditioning, lifts the experience of user.
In above-mentioned technical proposal, 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
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,
Regularly defrost can be carried out to outdoor heat exchanger, it is ensured that the running status of outdoor heat exchanger.
In above-mentioned technical proposal, 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
Inlet temperature T7 of detection outdoor heat exchanger, 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 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, by detecting that the inlet temperature of outdoor heat exchanger can
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,
By detecting that the inlet temperature of outdoor heat exchanger is compared with the 4th preset temperature, judgement is met after defrost condition, is being continued
Terminate defrost after defrost Preset Time, it is ensured that defrost effect is more thorough；Yet another approach is, from starting meter when defrost
When, defrost operation duration reaches and terminate after preset duration defrost, and method is simple.
In above-mentioned technical proposal, it is preferable that when satisfaction is default exits defrost condition, terminate defrost, specifically include：Close
The first stop valve is closed, and adjusts indoor fan rotating speed and be increased to the rotating speed before defrost, into heating mode.
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 is entered and normally heats mould
Formula is heated, and makes indoor temperature reach the comfort level for meeting user, improves the experience of user.
In above-mentioned technical proposal, 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, weight b of phase-change material, and
The electrical heating power c of electric heating part 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 less electric heating part of electrical power is longer.
In above-mentioned technical proposal, it is preferable that the span of the first preset temperature is 0 degree to 100 degree.
In the technical scheme, the first preset temperature is determined by phase-change material phase transformation temperature pointses T, typically high 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.
The additional aspect and advantage of the present invention will become obvious in following description section, or by the practice of the present invention
Recognize.
Description of the drawings
Fig. 1 shows system schematic under the air-conditioner refrigeration mode of one embodiment of the invention；
Fig. 2 shows system schematic under the air conditioner heat-production pattern 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 a show system schematic under the air-conditioner refrigeration mode of further embodiment of the present invention；
Fig. 4 b show a-quadrant enlarged diagram in Fig. 4 a；
Fig. 4 c show system schematic under the air-conditioner defrost pattern of further embodiment of the present invention；
Fig. 4 d show B regions enlarged diagram in Fig. 4 c；
Fig. 5 shows the defrosting control method schematic flow sheet of the air-conditioner of one embodiment of the invention.
Wherein, the corresponding relation in Fig. 1 to Fig. 5 between reference and component names is：
1 compressor, 2 four-way change-over 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 concrete real in order to be more clearly understood that the above objects, features and advantages of the present invention
Apply mode to be further described in detail the present invention.It should be noted that in the case where not conflicting, the enforcement 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 restriction.
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 to Fig. 5
Control method.
As shown in Figure 1 to Figure 4 shown in d, the present invention proposes a kind of air-conditioner, including：Compressor 1；Indoor heat exchanger, interior is changed
One end of hot device is connected with compressor 1；Outdoor heat exchanger, the other end of indoor heat exchanger is connected with outdoor heat exchanger；Four-way is changed
To valve 2, between compressor 1 and indoor heat exchanger and outdoor heat exchanger, two orifice compressors of four-way change-over valve 2
1 gas outlet and one end of indoor heat exchanger, the air inlet of the another two orifice compressor 1 of four-way change-over valve 2 and outdoor
One end of heat exchanger；Throttling arrangement, is disposed in the interior between heat exchanger and outdoor heat exchanger；Accumulation of heat component, is arranged on compressor 1
Air inlet and an interface of four-way change-over valve 2 between；First stop valve 4, be arranged on compressor 1 and four-way change-over valve 2 it
Between, 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, if
Put inside the storage heater.
The air-conditioner that the present invention is provided, by accumulation of heat device assembly the air inlet of compressor 1 and the one of four-way change-over valve 2 is arranged on
Between individual interface, by arranging accumulation of heat component the efficiency of defrost is improved, and then improve relaxing for indoor environment temperature during defrost
Appropriateness.Specifically, accumulation of heat component includes the heat-storing material housed in storage heater and the electric heating part being arranged in storage heater, leads to
Cross lower powered electric heating part to preheat in advance, shortage of heat when solving the problems, such as there was only storage heater in prior art, using electricity
The heat-storing material of the too high air-conditioner provided with the too high problem of temperature, the present invention of heating member power is by storage heater content
Heat-storing material is put, then electric heating part is placed between heat-storing material, storage heater storage foot is caused by the heating of electric heating part
Enough heats, further ensure that the efficiency of defrost and the effect of defrost, it is to avoid long-time defrost in prior art causes room
Interior temperature drop is very fast, and fluctuations in indoor temperature is larger and discomfort that bring to user.Meanwhile, added by heat-storing material and electricity
Warmware cooperates, it is to avoid using temperature rapid increase caused by single electric heating function, and it is electrically heated frequently
Open and produce rush of current, it is therefore prevented that refrigerator oil is carbonized, and extends the service life of the grade electric elements of four-way change-over valve 2,
Reliability, security and comfortableness that air-conditioner is integrally used are ensure that, the user satisfaction of user is lifted.
In one embodiment of the present of invention, as shown in Figure 1 (direction of arrow is refrigerant flow direction in figure), air-conditioner is in refrigeration
Under pattern, condenser is connected by an interface of four-way change-over valve 2 with the gas outlet of compressor 1, evaporimeter and compressor 1
Air inlet is connected, and the first stop valve 4 is opened, and adjusts the aperture of electronic expansion, and the flow direction of refrigerant is directly entered through four-way change-over valve 2
Enter to condenser, then compressor 1 is being returned to after electric expansion valve 3, evaporimeter, carry out the loop control of refrigeration mode.Fig. 1
In, solid line represents high temperature, and dotted line represents low temperature, the position that accumulation of heat component is located in figure, even if in cooling mode, heat-storing material
Phase-change material for low melting point also will not fail, for example 12 water disodium hydrogen phosphates etc..
In one embodiment of the present of invention, as shown in Figure 2 (direction of arrow is refrigerant flow direction in figure), air-conditioner is in and heats
Pattern, four-way change-over valve 2 commutates, and evaporimeter is connected by the interface of four-way change-over valve 2 with the gas outlet of compressor 1, condenser
It is connected with the air inlet of compressor 1, opens first stop valve 4, adjust the aperture of electric expansion valve 3, refrigerant flows to spontaneous evaporation
Device, electric expansion valve 3, condenser return to compressor 1, carry out the circulation of heating mode.As shown in figure 3, ending when closing first
Valve 4, adjusts the aperture of electric expansion valve 3, turns down the rotating speed of indoor fan, opens electric heating part, then carry out in a heating mode
Defrost, after opening electric heating part Preset Time, or the surface temperature of electric heating part is reached after preset temperature, closes electrical heating
Part, the outlet temperature for detecting condenser judges whether that satisfaction exits defrost condition, and satisfaction is exited after 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, it is in parallel with the first stop valve 4 after connecting with accumulation of heat component, under defrost pattern, refrigerant after evaporator condensation heat release, Jing
Electric expansion valve 3 is crossed, condenser is left to, is melted the frost of condenser while supercooling, then Jing capillaries 5 are throttled to storage heater
The second compression again of compressor 1 is returned to after heat absorption evaporation.
In one embodiment of the present of invention, as shown in Fig. 4 a to 4d (direction of arrow is refrigerant flow direction in figure), it is proposed that one
Air-conditioner is planted, including：Compressor 1；Indoor heat exchanger, one end of indoor heat exchanger is connected with compressor 1；Outdoor heat exchanger, room
The other end of interior heat exchanger is connected with outdoor heat exchanger；Four-way change-over valve 2, changes positioned at compressor 1 with indoor heat exchanger and outdoor
Between hot device, the gas outlet and one end of indoor heat exchanger of two orifice compressors 1 of four-way change-over valve 2, four-way commutation
The air inlet of the another two orifice compressor 1 of valve 2 and one end of outdoor heat exchanger；Throttling arrangement, is disposed in the interior heat exchange
Between device and outdoor heat exchanger；Accumulation of heat component, is arranged between the air inlet of compressor 1 and four-way change-over valve 2；First stop valve
4, it is disposed in the outdoor between heat exchanger and four-way change-over valve 2, with accumulation of heat modules in parallel；Wherein, accumulation of heat component includes：Storage heater,
Heat-storing material is provided with storage heater；Electric heating part, is arranged on inside storage heater.Wherein, the first stop valve 4 is three-way diverter valve
7.It is as shown in Figs. 4a and 4b, three-way diverter valve 7 commutate cause four-way change-over valve 2 be connected with the air inlet of compressor 1, as Fig. 4 c with
Shown in 4d, three-way diverter valve 7 commutates and four-way change-over valve 2 is connected with accumulation of heat component, and refrigerant is being entered after accumulation of heat component
To the air inlet of compressor 1, the defrost to condenser is realized.
The present invention's also proposed a kind of defrosting control method of air-conditioner, including：In a heating mode, detect that outdoor is changed
Outlet temperature T3 of hot device；When outlet temperature T3 meets defrost condition, triple valve is adjusted, connect accumulation of heat component, opened electricity and add
Warmware, and adjust indoor fan rotating speed and be reduced to default low wind rotating speed or indoor heat exchanger temperature is adjusted to into preset temperature；Obtain
The running status of power taking heating member, when the running status of electric heating part reaches default closed mode, closes electric heating part, together
When, triple valve, the connection air inlet of compressor 1 and cross valve are adjusted, carry out defrost；When satisfaction is default exits defrost condition, knot
Fasciculation frost.
A kind of defrosting control method of air-conditioner that the present invention is provided, detects outlet temperature T3 of outdoor heat exchanger, meets
During defrost condition, three-way diverter valve 7 is adjusted so that accumulation of heat component is connected with four-way change-over valve 2, open electric heating part, pass through
The heat of electrical heating and storage heater storage carries out defrost to outdoor heat exchanger together, while turning down the rotating speed of indoor fan；Changing
During frost, the running status of real-time monitoring electric heating part, when the running status of electric heating part reaches default closed mode, is closed
Electric heating part is closed, while adjustment triple valve, the connection air inlet of compressor 1 and four-way change-over valve 2, continue defrost, by adding to electricity
The real-time monitoring of warmware state, it is ensured that the operation safety of electric heating part, it is to avoid the electric heating part heat time is long, and temperature is too high
And the potential safety hazard brought, improve the use reliability of air-conditioner；Meanwhile, by the auxiliary heating of electric heating part, with accumulation of heat
Device coordinate realize while defrost is carried out air-conditioner can persistently heat, also shorten only with storage heater carry out defrost when
Between, improve the experience of user, improve defrost efficiency, improve can defrost effect.
As shown in figure 5, air-conditioner defrosting control method flow chart in one embodiment of the present of invention, comprises the following steps that：
Step 51, in a heating mode, detects outlet temperature T3 of outdoor heat exchanger；
Step 52, judges whether to meet defrost condition according to outlet temperature T3, specifically includes：
Step 522, 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 524, when the accumulated running time for continuing to run with of compressor 1 is to three Preset Times, detection outdoor is changed
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 526, when the accumulated running time for continuing to run with of compressor 1 is to four Preset Times, detects the room
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 528, 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 53, defrost pattern is not entered when defrost condition is met, and adjustment three-way diverter valve 7 commutates, and opens electrical heating
Part, and adjust indoor fan rotating speed and be reduced to default low wind rotating speed or indoor heat exchanger temperature is adjusted to into preset temperature；
Step 54, obtains the running status of electric heating part, specifically includes：
Step 542, records the unlatching duration of electric heating part；
Step 544, when the unlatching duration of electric heating part is more than the first Preset Time, closes electric heating part；
Step 546, detects surface temperature T of electric heating part；
Step 548, when surface temperature T is more than or equal to the first preset temperature, closes electric heating part；
Step 55, 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 56, detects whether to meet defrost condition, specifically includes：
Step 562, detects 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 564, detects 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 566, when defrost timing is started, and when defrost run time reaches eight Preset Times, terminates defrost；
Step 57, when satisfaction is default exits defrost condition, adjustment three-way diverter valve 7 commutates, and opens the first stop valve 4,
The second stop valve 6 is closed, and adjusts indoor fan rotating speed and be increased to the rotating speed before defrost, into heating mode.
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
The electrical heating power c decisions of a, weight b of phase-change material, and electric heating part, 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 less electric heating part of electrical power is more
It is 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 high 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, start from compressor 1 and start, 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
Enclose for 29 minutes to 40 minutes, then determine whether to meet the defrost condition that enters, outlet temperature T3 the first preset temperature setting value 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
Defrost is entered after 1 minute to 5 minutes.
In one embodiment of the present of invention, exit 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, when 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, from timing is started into defrost, 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.
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, and for example, " connection " can be fixedly connected, and also may be used
Being to be detachably connected, or it is integrally connected；" connected " can be joined directly together, it is also possible to be indirectly connected to by intermediary.
For the ordinary skill in the art, above-mentioned term specifically containing in the present invention can as the case may be understood
Justice.
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 describe 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, identical embodiment or reality are not necessarily referring to the schematic representation of above-mentioned term
Example.And, the specific features of description, structure, material or feature can in any one or more embodiments or example with
Suitable mode is combined.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, 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 (16)
1. a kind of air-conditioner, it is characterised in that include：
Compressor；
Indoor heat exchanger, one end of the 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 change-over 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 change-over 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 air inlet of the compressor and an interface of the four-way change-over valve；
First stop valve, is arranged between the compressor and the four-way change-over valve, with the accumulation of heat modules in parallel；
Wherein, the accumulation of heat component includes：
Storage heater, in the storage heater heat-storing material is provided with；
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 compressor and the four-way change-over valve, connects 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
The throttling arrangement is electric expansion valve.
6. 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 accumulation of heat component, in parallel with the throttling arrangement.
7. air-conditioner according to claim 1, it is characterised in that
First stop valve is triple valve, three interfaces of triple valve air inlet respectively with the compressor, described
One interface of four-way change-over valve and one end of the storage heater are connected, the other end of the storage heater and the compressor
Air inlet is connected.
8. 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, outlet temperature T3 of the outdoor heat exchanger is detected；
When outlet temperature T3 meets defrost condition, triple valve is adjusted, connect accumulation of heat component, open electric heating part, and adjusted
Section indoor fan rotating speed is reduced to default low wind rotating speed or the indoor heat exchanger temperature is adjusted to into preset temperature；
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 triple valve is adjusted, the compressor inlet and cross valve are connected, carry out defrost；
When satisfaction is default exits defrost condition, terminate defrost.
9. the defrosting control method of air-conditioner according to claim 8, 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, concrete 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.
10. the defrosting control method of air-conditioner according to claim 8, it is characterised in that the acquisition electrical heating
The running status of part, when the running status of the electric heating part reaches default closed mode, closes the electric heating part, specifically
Also include：
Detect surface temperature T of the electric heating part；
When surface temperature T is more than or equal to the first preset temperature, the electric heating part is closed.
The defrosting control method of 11. air-conditioners according to claim 8, it is characterised in that 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 12. air-conditioners according to claim 8, it is characterised in that 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 13. air-conditioners according to any one of claim 8 to 12, it is characterised in that described pre-
If exiting defrost condition, specifically include：
Inlet temperature T6 of the outdoor heat exchanger is detected, when inlet temperature T6 is more than or equal to three preset temperatures, knot
Fasciculation frost；Or
Inlet temperature T7 of the outdoor heat exchanger is detected, when 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 14. air-conditioners according to claim 8, it is characterised in that described to exit when satisfaction is default
During defrost condition, terminate defrost, specifically include：The first stop valve is closed, and adjusts indoor fan rotating speed and be increased to before defrost
Rotating speed, into heating mode.
The defrosting control method of 15. air-conditioners according to claim 9, 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 16. air-conditioners according to claim 10, it is characterised in that
The span of first preset temperature is 0 degree Celsius to 100 degrees Celsius.
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| CN201710016553.XA CN106642595A (en) | 2017-01-10 | 2017-01-10 | Air conditioner and defrosting control method thereof |
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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 |
| CN111503824A (en) * | 2020-04-29 | 2020-08-07 | 广东美的制冷设备有限公司 | Control method of air conditioning system and air conditioning system |
| CN111503823A (en) * | 2020-04-29 | 2020-08-07 | 广东美的制冷设备有限公司 | Control method of air conditioning system and air conditioning system |
| CN112944594A (en) * | 2021-01-29 | 2021-06-11 | 青岛海尔空调器有限总公司 | Method and device for defrosting control of air conditioner and air conditioner |
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