CN106705303B

CN106705303B - Defrosting control method, defrosting control system and air conditioner

Info

Publication number: CN106705303B
Application number: CN201710016290.2A
Authority: CN
Inventors: 谭周衡; 姬安生; 曾小朗
Original assignee: Midea Group Co Ltd; Midea Group Wuhan Refrigeration Equipment Co Ltd
Current assignee: Midea Group Co Ltd; Midea Group Wuhan Refrigeration Equipment Co Ltd
Priority date: 2017-01-10
Filing date: 2017-01-10
Publication date: 2019-05-14
Anticipated expiration: 2037-01-10
Also published as: CN106705303A

Abstract

The present invention provides a kind of defrosting control method, defrosting control system and air conditioner, defrosting control method includes: air conditioner sensed system parameter in a heating mode；It is closed if system parameter reaches default defrost condition control shut-off valve, electric heating part work；Record the operating time of electric heating part, detect storage heater temperature, storage heater temperature T0 and Ti after the first preset duration and the second preset duration are recorded respectively, if storage heater temperature difference is greater than fiducial temperature, control electric heating part stops working, and shut-off valve is opened, and four-way valve commutation makes air conditioner defrost in cooling mode, otherwise, terminate.Defrosting control method provided by the invention, air conditioner carries out defrost in a heating mode, guarantee good defrosting effect and heating effect, promote user's comforts of use, very fast in storage heater temperature rise, when heat-storing material lacks deficiency, four-way valve commutation makes air conditioner defrost in cooling mode, guarantee good defrosting effect, improves the satisfaction that user uses.

Description

Defrosting control method, defrosting control system and air conditioner

Technical field

The present invention relates to air conditioner technical field, in particular to a kind of defrosting control method, defrosting control system and Air conditioner.

Background technique

Air conditioner in the related technology usually carries out hot gas defrosting using the delivery temperature of compressor, when starting defrosting, Four-way valve commutation, makes outdoor heat exchanger heat release, and indoor heat exchanger heat absorption causes indoor environment temperature to reduce, in this way colder In environment, air conditioner runs refrigeration cycle, will lead to that room temperature is sometimes hot and sometimes cold, influences the comfort level of user；And it defrosted Frost in journey due to outdoor heat exchanger lower part is more difficult cleared, when in top half, oneself finishes through defrosting, it is necessary to until outdoor is changed Partially defrosting under hot device completely can be completed at the same time defrosting and enter normal heating operation state, therefore waste a part Heat, and extend defrosting process, reduce heating capacity and reduce overall heating effect.

Summary of the invention

At least one in order to solve the above-mentioned technical problem, the embodiment of the first aspect of the present invention proposes a kind of defrost control Method processed.

A kind of the second aspect of the present invention embodiment, it is also proposed that defrosting control system.

A kind of another aspect of the invention embodiment, it is also proposed that air conditioner.

In view of this, embodiment according to the first aspect of the invention, proposes a kind of defrosting control method, it to be used for air-conditioning Device, air conditioner include compressor, four-way valve, outdoor heat exchanger, accumulation of heat component and shut-off valve, and accumulation of heat component and shut-off valve are in parallel Setting between four-way valve and outdoor heat exchanger, accumulation of heat component includes storage heater and electric heating part, and accumulation of heat component can make Air conditioner defrost in a heating mode, defrosting control method include: air conditioner in a heating mode, detect air conditioner system ginseng Number；Judge whether system parameter reaches default defrost condition；If so, control shut-off valve is closed, control electric heating part work is to storage Hot device, which carries out heating, makes air conditioner defrost in a heating mode；The operating time of electric heating part is recorded, storage heater temperature is detected, It is T0 by detected storage heater thermograph, and after the second preset duration when operating time reaches the first preset duration, It is Ti by detected storage heater thermograph；Judge whether storage heater temperature difference Ti-T0 is greater than fiducial temperature；If so, control Electric heating part processed stops working, and control shut-off valve is opened, and control four-way valve commutation makes air conditioner defrost in cooling mode, if It is no, terminate.

The defrosting control method that the embodiment of first aspect present invention provides, in a heating mode by air conditioner, detection The system parameter of air conditioner, and when system parameter reaches default defrost condition, control shut-off valve is closed, and electric heating part work is controlled Make that storage heater is carried out to heat to make air conditioner defrost in a heating mode, so that refrigerant is in the accumulation of heat by being electrically heated part heating Heat is fully absorbed when device, improves the temperature for flowing to indoor heat exchanger refrigerant, and then guarantee good heating effect, meanwhile, by Indoor heat exchanger, which is migrated to the higher refrigerant of temperature of outdoor heat exchanger, is conducive to outdoor heat exchanger progress defrost, guarantees that outdoor is changed Hot device is quick, thorough defrost, and avoiding four-way valve commutation from making air conditioner, defrost makes the larger shadow of fluctuations in indoor temperature in cooling mode The comfort level for ringing user effectively improves user's comforts of use, improves the satisfaction that user uses；By recording electric heating The operating time of part detects storage heater temperature, at work the long storage heater temperature that when reaching the first preset duration, will test Be recorded as T0, and after the second preset duration, the storage heater thermograph that will test be Ti, and when Ti-T0 whether be greater than it is pre- If the judging result of the temperature difference is to be stopped working when being by controlling electric heating part, control shut-off valve is opened, and four-way reversing valve is controlled Commutation makes air conditioner defrost in cooling mode, so that the temperature rise of storage heater is very fast in heat-storing material deficiency, defrost and heating effect So that air conditioner is carried out defrost in cooling mode by four-way valve commutation in the case that fruit is poor, and then guarantees air conditioner defrost Timeliness, validity, completeness guarantee good defrosting effect, and the heating for avoiding defrosting effect poor and influencing air conditioner is imitated Fruit is effectively guaranteed good heating effect, guarantees that air conditioner can also be operated normally in heat-storing material deficiency and is removed Frost promotes the usage experience of user, improves the satisfaction that user uses；And when whether Ti-T0 is greater than the judgement knot of fiducial temperature When fruit is no, terminate, so that air conditioner continues the progress that do not commutate with heating mode four-way valve in the case where heat-storing material abundance Defrost guarantees good defrosting effect and heating effect, promotes user in defrost using the comfort level of air conditioner, promotes user Usage experience, improve the satisfaction that uses of user.

In addition, the defrosting control method in above-described embodiment provided by the invention can also have following supplementary technology special Sign:

In the above-mentioned technical solutions, it is preferable that further include: temperature is preset when judging whether storage heater temperature difference Ti-T0 is greater than The judging result of difference is when being, to push and show heat-storing material fault message.

In the technical scheme, it is by the judging result whether the temperature difference Ti-T0 in storage heater is greater than fiducial temperature When being, push and show that heat-storing material fault message, the storage heater for facilitating user to understand air conditioner accurately and in time lack accumulation of heat Material, and then be conducive to user and heat-storing material is replenished in time according to the fault message of heat-storing material, it has simultaneously effective prompted to use Air conditioner current defrost pattern in family is conducive to the work shape that user controls air conditioner according to the current defrost pattern of air conditioner State to guarantee good heating effect, and then improves the satisfaction that user uses.Further, the fault message of storage heater can Think and lacks heat-storing material information, or remaining heat-storing material and storage heater volume accounting information, and then be conducive to user Suitable heat-storing material is accurately added according to the accounting information of remaining heat-storing material and storage heater volume, it is simple, convenient, it mentions Rise the usage experience of user.

In any of the above-described technical solution, it is preferable that control shut-off valve close, control electric heating part work to storage heater into Row heating makes air conditioner, and the specific steps of defrost include: to control shut-off valve to close in a heating mode；After third preset duration, The work of control electric heating part, which carries out heating to storage heater, makes air conditioner defrost in a heating mode.

In the technical scheme, it is closed by control shut-off valve, after third preset duration, control electric heating part work pair Storage heater, which carries out heating, makes air conditioner defrost in a heating mode, so that air conditioner is meeting the defrost condition initial stage, first leads to It crosses the heat that storage heater stores under air conditioner heat-production mode and carries out defrost, so that the heat of storage heater storage obtains effective benefit With, and control electric heating part work after third preset duration and storage heater is heated, avoid electric heating part from working always wave Take the energy, effectively saved the energy, avoid wasting, reduce use cost, improves the satisfaction that user uses.

In any of the above-described technical solution, it is preferable that the first preset duration, the second preset duration, third preset duration are At least one of: relational expression, the relational expression of heat-storing material, fixed value of storage heater volume.

In the technical scheme, the first preset duration, the second preset duration, third preset duration be at least one of but It is without being limited thereto: relational expression, the relational expression of heat-storing material, fixed value of storage heater volume, the first preset duration, the second preset duration It can satisfy the demand of different air conditioners, different accumulation of heat components and different user with a variety of expression ways of third preset duration, It is applied widely.On the one hand, the first preset duration, the second preset duration and third preset duration are storage heater volume and accumulation of heat The relational expression of material, can guarantee air conditioner in the first preset duration by the heat-storing material being contained in storage heater and its Capacity absorbs enough heats and defrosts, and according to the case where storage heater temperature rises in the second preset duration, timely, quasi- The defrost pattern of air conditioner and the working condition of electric heating part really are controlled, and then guarantees good defrosting effect and saves energy The satisfaction that user uses is improved in source, by working after the third preset duration after shut-off valve is opened in control electric heating part, The energy has effectively been saved, waste is avoided；On the one hand, the first preset duration and the second preset duration are fixed value, facilitate use Family setting, is conducive to operate.

In any of the above-described technical solution, it is preferable that fiducial temperature is at least one of: the relationship of storage heater volume Formula, the relational expression of heat-storing material, the relational expression of the first preset duration, the relational expression of the second preset duration, third preset duration Relational expression, fixed value.

In the technical scheme, fiducial temperature is at least one of but not limited to this: the relational expression of storage heater volume stores The relational expression of hot material, the relational expression of the first preset duration, the relational expression of the second preset duration, fixed value, fiducial temperature it is more Kind expression way can satisfy the demand of different air conditioners, different accumulation of heat components and different user, applied widely.

In any of the above-described technical solution, it is preferable that system parameter is at least one of or combinations thereof: the temperature of storage heater Degree, the temperature of condenser, the runing time of compressor, the running frequency of compressor.

In the technical scheme, system parameter is at least one of or combinations thereof but not limited to this: the temperature of storage heater, Temperature, the runing time of compressor, the running frequency of compressor of condenser, a variety of expression-forms of system parameter can satisfy The demand of different air conditioners and different user, it is applied widely.

In any of the above-described technical solution, it is preferable that the first preset duration is 4 minutes, and fiducial temperature is 50 DEG C, and second is pre- If when it is 0.5 minute a length of, third preset duration be 2 minutes.

In the technical scheme, air conditioner is when system parameter reaches default defrost condition in a heating mode, control cut-off Valve is closed, and control electric heating part work after the 2 minutes, so that air conditioner is meeting the defrost condition initial stage, first passes through storage The heat that hot device stores under air conditioner heat-production mode carries out defrost, so that the heat of storage heater storage is utilized effectively, keeps away Exempt from electric heating part to work always waste of energy, effectively saved the energy, avoided wasting, reduces use cost, while making cold Matchmaker fully absorbs heat in the storage heater by being electrically heated part heating, improves the temperature for flowing to indoor heat exchanger refrigerant, into And guarantee good heating effect, simultaneously as it is higher to migrate the temperature to outdoor heat exchanger refrigerant by indoor heat exchanger, so that Air conditioner can carry out defrost in a heating mode, and the refrigerant of higher temperature is conducive to outdoor heat exchanger and carries out defrost, guarantees Outdoor heat exchanger is quick, thorough defrost, and avoiding four-way valve commutation from making air conditioner, defrost makes fluctuations in indoor temperature in cooling mode It is larger, and then improve user's comforts of use and satisfaction；By recording the operating time of electric heating part, and in electric heating part Work 4 minutes by storage heater thermograph be T0, after 0.5 minute by storage heater thermograph be Ti, judge whether Ti-T0 big In 50 DEG C of fiducial temperature, if so, control electric heating part stops working, control shut-off valve is opened, and control four-way reversing valve commutation makes Air conditioner defrost in cooling mode, so that being made in the case where heat-storing material deficiency defrosting effect is poor by four-way valve commutation Air conditioner carries out defrost in cooling mode, and then guarantees timeliness, validity, the completeness of air conditioner defrost, guarantees good Defrosting effect, avoid defrosting effect poor and influence the heating effect of air conditioner, be effectively guaranteed good heating effect, Guarantee that air conditioner can also be operated normally in heat-storing material deficiency to defrost, promotes the usage experience of user, improve user The satisfaction used, meanwhile, it pushes and shows heat-storing material fault message, user is facilitated to understand air conditioner accurately and in time Storage heater lacks heat-storing material, is conducive to user according to the fault message of heat-storing material and heat-storing material is replenished in time；When Ti-T0 is When the no judging result greater than fiducial temperature is no, terminate, so that air conditioner continues to make in the case where heat-storing material abundance Heat pattern four-way valve, which does not commutate, carries out defrost, guarantees good defrosting effect and heating effect, promotes user and uses in defrost The comfort level of air conditioner promotes the usage experience of user, improves the satisfaction that user uses.

Embodiment according to the second aspect of the invention, it is also proposed that a kind of defrosting control system is used for air conditioner, defrost control System processed includes: first detection unit, in a heating mode for air conditioner, detects the system parameter of air conditioner；First judgement Unit, for judging whether system parameter reaches default defrost condition；First execution unit, for sentencing when the first judging unit Disconnected result is when being, control shut-off valve is closed, and the work of control electric heating part, which carries out heating to storage heater, makes air conditioner in heating mould Defrost under formula starts second detection unit and recording unit；Second detection unit, for detecting storage heater temperature；Recording unit, For recording the operating time of electric heating part, when length reaches the first preset duration at work, by second detection unit detection Storage heater thermograph is T0, and after the second preset duration, and the storage heater thermograph by second detection unit detection is Ti； Second judgment unit, for judging whether storage heater temperature difference Ti-T0 is greater than fiducial temperature；Second execution unit, for the The judging result of two judging units is when being, control electric heating part stops working, and control shut-off valve is opened, control four-way valve commutation Make air conditioner defrost in cooling mode, when the judging result of second judgment unit is no, terminates.

The defrosting control system that the embodiment of second aspect of the present invention provides, by first detection unit in air conditioner heat-production Under mode, the system parameter of air conditioner is detected, the first judging unit judges whether system parameter reaches default defrost, and first executes Unit the first judging unit judging result be when, control shut-off valve close, control electric heating part work to storage heater into Row heating makes air conditioner defrost in a heating mode, so that refrigerant is fully absorbed in the storage heater by being electrically heated part heating Heat improves the temperature for flowing to indoor heat exchanger refrigerant, and then guarantees good heating effect, meanwhile, it is moved by indoor heat exchanger The higher refrigerant of temperature for moving to outdoor heat exchanger is conducive to outdoor heat exchanger and carries out defrost, guarantees that outdoor heat exchanger is quick, thorough Bottom defrost, avoiding four-way valve commutation from making air conditioner, defrost makes that fluctuations in indoor temperature larger impact user's is comfortable in cooling mode Degree effectively improves user's comforts of use, improves the satisfaction that user uses；Storage heater is detected by second detection unit Temperature, it is long when reaching the first preset duration by the operating time of recording unit records electric heating part, and at work, it will test The storage heater thermograph arrived is T0, and after the second preset duration, the storage heater thermograph that will test is Ti, by the Two judging units judge whether Ti-T0 is greater than fiducial temperature, and the second execution unit is yes in the judging result of second judgment unit When, control electric heating part stops working, and control shut-off valve is opened, and control four-way reversing valve commutation makes air conditioner in cooling mode Defrost so that heat-storing material deficiency, the temperature rise of storage heater is very fast, defrost and heating effect it is poor in the case where pass through four-way valve Commutation makes air conditioner carry out defrost in cooling mode, and then guarantees timeliness, validity, the completeness of air conditioner defrost, protects Good defrosting effect is demonstrate,proved, avoids defrosting effect poor and influences the heating effect of air conditioner, is effectively guaranteed good system Thermal effect guarantees that air conditioner can also be operated normally in heat-storing material deficiency and defrosts, promotes the usage experience of user, mention The satisfaction that high user uses is terminated by the second execution unit when the judging result of second judgment unit is no, so that In the case that heat-storing material is sufficient, air conditioner continuation is not commutated with heating mode four-way valve carries out defrost, guarantees good defrost Effect and heating effect promote user in defrost using the comfort level of air conditioner, promote the usage experience of user, improve user The satisfaction used.

In any of the above-described technical solution, it is preferable that further include: display unit, for working as the judgement of second judgment unit It as a result is when being, to push and show heat-storing material fault message.

In the technical scheme, it pushes and shows when the judging result of second judgment unit is to be by display unit Heat-storing material fault message, the storage heater for facilitating user to understand air conditioner accurately and in time lacks heat-storing material, and then is conducive to Heat-storing material is replenished in time according to the fault message of heat-storing material in user, the change for simultaneously effective having prompted user's air conditioner current White mode is conducive to the working condition that user controls air conditioner according to the current defrost pattern of air conditioner, to guarantee good system Thermal effect, and then improve the satisfaction that user uses.Further, the fault message of storage heater can be to lack heat-storing material letter Breath, or remaining heat-storing material and storage heater volume accounting information, and then be conducive to user according to remaining heat-storing material with The accounting information of storage heater volume accurately adds suitable heat-storing material, simple, convenient, promotes the usage experience of user.

In any of the above-described technical solution, it is preferable that the first execution unit further include: cut-off valve control unit, VCU, for working as The judging result of first judging unit is when being, control shut-off valve is closed；Timing unit, the duration that record shut-off valve is closed, and When duration reaches third preset duration, enabling signal is sent to electric heating part control unit；Electric heating part control unit, is used for According to enabling signal, electric heating part work is controlled, carrying out heating to storage heater makes air conditioner defrost in a heating mode.

In the technical scheme, through cut-off valve control unit, VCU when the judging result of the first judging unit is to be, control Shut-off valve is closed, and timing unit records the duration that shut-off valve is closed, and when duration reaches third preset duration, to electric heating part Control unit sends enabling signal, electric heating part control unit according to enabling signal, control electric heating part work to storage heater into Row heating makes air conditioner defrost in a heating mode, so that air conditioner is meeting the defrost condition initial stage, first passes through storage heater The heat that stores under air conditioner heat-production mode carries out defrost, so that the heat of storage heater storage is utilized effectively, and the Electric heating part work is controlled after three preset durations to heat storage heater, avoids electric heating part from working always waste of energy, has The energy has been saved to effect, has avoided wasting, has reduced use cost, has improved the satisfaction that user uses.

In any of the above-described technical solution, it is preferable that the first preset duration is 4 minutes, and fiducial temperature is 50 DEG C, and first is pre- If temperature is 80 DEG C, the second preset temperature is 20 DEG C, and the second preset duration is 0.5 minute, and third preset duration is 2 minutes.

In the technical scheme, air conditioner is when system parameter reaches default defrost condition in a heating mode, control cut-off Valve is closed, and control electric heating part work after the 2 minutes, so that air conditioner is meeting the defrost condition initial stage, first passes through storage The heat that hot device stores under air conditioner heat-production mode carries out defrost, so that the heat of storage heater storage is utilized effectively, keeps away Exempt from electric heating part to work always waste of energy, effectively saved the energy, avoided wasting, reduces use cost, while making cold Matchmaker fully absorbs heat in the storage heater by being electrically heated part heating, improves the temperature for flowing to indoor heat exchanger refrigerant, into And guarantee good heating effect, simultaneously as it is higher to migrate the temperature to outdoor heat exchanger refrigerant by indoor heat exchanger, so that Air conditioner can carry out defrost in a heating mode, and the refrigerant of higher temperature is conducive to outdoor heat exchanger and carries out defrost, guarantees Outdoor heat exchanger is quick, thorough defrost, and avoiding four-way valve commutation from making air conditioner, defrost makes fluctuations in indoor temperature in cooling mode It is larger, and then improve user's comforts of use and satisfaction；By recording the operating time of electric heating part, and in electric heating part Storage heater thermograph is T0 by work 4 minutes, and storage heater thermograph is Ti by record after 0.5 minute, judges that Ti-T0 is No to be greater than 50 DEG C of fiducial temperature, if so, control electric heating part stops working, control shut-off valve is opened, and control four-way reversing valve changes To air conditioner defrost in cooling mode is made, so that being changed in the case where heat-storing material deficiency defrosting effect is poor by four-way valve To making air conditioner carry out defrost, and then timeliness, validity, the completeness of guarantee air conditioner defrost in cooling mode, guarantee Good defrosting effect avoids defrosting effect poor and influences the heating effect of air conditioner, is effectively guaranteed good heating Effect guarantees that air conditioner can also be operated normally in heat-storing material deficiency and defrosts, promotes the usage experience of user, improve The satisfaction that user uses, meanwhile, it pushes and shows heat-storing material fault message, user is facilitated to understand air-conditioning accurately and in time The storage heater of device lacks heat-storing material, is conducive to user according to the fault message of heat-storing material and heat-storing material is replenished in time；If it is not, That is Ti-T0 whether be greater than fiducial temperature judging result be it is no when, terminate so that heat-storing material abundance in the case where, air-conditioning Device continuation is not commutated with heating mode four-way valve carries out defrost, guarantees good defrosting effect and heating effect, promotes user and exists Using the comfort level of air conditioner when defrost, the usage experience of user is promoted, improves the satisfaction that user uses.

Embodiment in accordance with a further aspect of the present invention, the invention proposes a kind of air conditioners, comprising: any of the above-described technology Defrosting control system described in scheme.

The air conditioner that further aspect of the present invention provides, including defrosting control system described in any of the above-described technical solution.Cause Air conditioner of the invention is provided with the defrosting control system of second aspect embodiment, thus has second aspect embodiment defrost control Whole beneficial effects of system processed, details are not described herein.

In the above-mentioned technical solutions, air conditioner further include: compressor；Indoor heat exchanger；Outdoor heat exchanger；Four-way valve, if It sets between indoor heat exchanger and outdoor heat exchanger, the air inlet and air outlet of two orifice compressors of four-way valve, four One end of the another two orifice indoor heat exchanger of port valve and one end of outdoor heat exchanger；Throttling set, setting are changed indoors Between the other end of hot device and the other end of outdoor heat exchanger；Accumulation of heat component is arranged between four-way valve and outdoor heat exchanger, stores Hot component includes storage heater, electric heating part and temperature-detecting device, and storage heater exists for accommodating heat-storing material, electric heating part setting On storage heater, for heating to storage heater, temperature-detecting device is arranged on storage heater, for detecting storage heater temperature； Shut-off valve is arranged between four-way valve and outdoor heat exchanger, connect with accumulation of heat modules in parallel.

Air conditioner provided by the invention, by the way that accumulation of heat component is arranged between four-way valve and outdoor heat exchanger, air conditioner exists When reaching defrost condition under heating mode, control shut-off valve is closed, and storage heater is heated in electric heating part work, so that accumulation of heat Device stores heat, the heat that electric heating part heat storage device keeps heat-storing material storage sufficient, refrigerant by the heat-storing material accommodated Heat is fully absorbed in the storage heater by being electrically heated part heating, improves the temperature for flowing to indoor heat exchanger refrigerant, in turn Guarantee good heating effect, simultaneously as it is higher to migrate the temperature to the refrigerant of outdoor heat exchanger by indoor heat exchanger, so that Air conditioner can also carry out defrost in a heating mode, and the refrigerant of higher temperature is conducive to outdoor heat exchanger and carries out defrost, guarantees Outdoor heat exchanger is quick, thorough defrost, avoid four-way valve commutation make air conditioner in cooling mode defrost fluctuations in indoor temperature compared with The big comfort level for influencing user, effectively improves user's comforts of use, improves the satisfaction that user uses；Existed by setting Temperature-detecting device on storage heater detects storage heater temperature, and when storage heater temperature difference is greater than fiducial temperature within a preset time Control electric heating part stops working, and control shut-off valve is opened, and four-way valve commutation makes air conditioner defrost in cooling mode, so that Air conditioner is set to carry out defrost in cooling mode by four-way valve commutation in the case that heat-storing material deficiency defrosting effect is poor, into And guarantee the timeliness, validity, completeness of air conditioner defrost, guarantee good defrosting effect, avoid defrosting effect poor and The heating effect for influencing air conditioner is effectively guaranteed good heating effect, guarantees that air conditioner can operate normally and is removed Frost promotes the usage experience of user, improves the satisfaction that user uses；And it is tied when the storage heater temperature difference is not more than fiducial temperature Beam guarantees good so that air conditioner continuation is not commutated with heating mode four-way valve carries out defrost in the case where heat-storing material abundance Good defrosting effect and heating effect promotes user in defrost using the comfort level of air conditioner, promotes the usage experience of user, Improve the satisfaction that user uses.Further, pass through the shut-off valve being arranged between four-way valve and outdoor heat exchanger and accumulation of heat Modules in parallel connection is conducive to control the working condition of accumulation of heat component or shut-off valve and is transported with meeting air conditioner with different modes Row, avoiding the need for shutting down influences the comfort that user uses to meet air conditioner with different mode operations, and then ensure that Air conditioner can switch different modes in the process of running, promote the usage experience of user, improve the satisfaction that user uses.

In any of the above-described technical solution, it is preferable that temperature-detecting device is temperature sensor.

In the technical scheme, temperature-detecting device is temperature sensor, cost is relatively low for temperature sensor, it is compact-sized, Sensitivity is higher, can easily be arranged on storage heater, and meets the structure of storage heater, further, temperature-detecting device Or other temperature-detecting devices met the requirements.Further, temperature-detecting device can be set inside storage heater Also the demand that can satisfy different temperatures detection device and different storage heater structures in storage heater outer surface can be set, be applicable in It is in extensive range.

In any of the above-described technical solution, it is preferable that heat-storing material is covert heat-storing material.

In the technical scheme, heat-storing material is covert heat-storing material, can stablize, store heat for a long time, avoid Storage heater temperature rises rapidly and refrigerator oil is caused to be carbonized, while storage heater temperature change being avoided comparatively fast to need frequently to open electricity Heating member and generate rush of current, covert heat-storing material can guarantee good heating effect and defrosting effect, and improving user makes Satisfaction.Further, covert heat-storing material is at least one of or combinations thereof but not limited to this: water, paraffin.

In any of the above-described technical solution, it is preferable that throttling set is electric expansion valve.

In the technical scheme, throttling set is electric expansion valve, so that being controlled according to the different operational modes of air conditioner Electric expansion valve is opened with different aperture threshold values, and then meets the different demands to coolant quantity of air-conditioner system, is applicable in model It encloses extensively, and can guarantee good heating effect and defrosting effect, and then improve the satisfaction that user uses.Further, Air conditioner in a heating mode defrost when, electric expansion valve is with the unlatching of maximum opening threshold value, to guarantee that sufficient coolant quantity carries out Energy exchange guarantees good defrosting effect and heating effect, improves the satisfaction that user uses.

Additional aspect and advantage of the invention will become obviously in following description section, or practice through the invention Recognize.

Detailed description of the invention

Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures Obviously and it is readily appreciated that, in which:

Fig. 1 a is the flow diagram of defrosting control method in one embodiment of the present of invention；

Fig. 1 b is the flow diagram of defrosting control method in another embodiment of the invention；

Fig. 2 a is the schematic block diagram of defrosting control system in one embodiment of the present of invention；

Fig. 2 b is the schematic block diagram of defrosting control system in another embodiment of the invention；

Fig. 3 a is the schematic block diagram of the air conditioner of one embodiment of the present of invention；

Fig. 3 b is the system schematic of air conditioner in one embodiment of the present of invention.

Wherein, the corresponding relationship in Fig. 3 b between appended drawing reference and component names are as follows:

300 air conditioners, 102 compressors, 104 indoor heat exchangers, 106 outdoor heat exchangers, 108 four-way valves, 110 throttling dresses It sets, 112 accumulation of heat components, 1122 storage heaters, 1124 electric heating parts, 114 throttle valves.

Specific embodiment

To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real Applying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application Feature in example and embodiment can be combined with each other.

In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also To be implemented using other than the one described here other modes, therefore, protection scope of the present invention is not by described below Specific embodiment limitation.

Referring to Fig. 1 a to Fig. 3 b description according to some embodiments of the invention defrosting control method, defrosting control system and Air conditioner.

As shown in Figure 1a, embodiment according to the first aspect of the invention, proposes a kind of defrosting control method, such as Fig. 1 a institute The defrosting control method flow diagram of the one embodiment of the present of invention shown includes:

Step S102, air conditioner in a heating mode, detect the system parameter of air conditioner；

Step S104, judges whether system parameter reaches default defrost condition；

Step S106, if the judging result of step S104 be it is yes, control shut-off valve close, control electric heating part work to storage Hot device, which carries out heating, makes air conditioner defrost in a heating mode；

Step S108 records the operating time of electric heating part, detects storage heater temperature, and it is default to reach first for length at work It is T0 by detected storage heater thermograph when duration；

Step S110, and after the second preset duration, it is Ti by detected storage heater thermograph；

Step S112, judges whether storage heater temperature difference Ti-T0 is greater than fiducial temperature；

Step S114, if the judging result of step S112 be it is yes, control electric heating part stop working, control shut-off valve open It opens, control four-way valve commutation makes air conditioner defrost in cooling mode, if the judging result of step S112 is no, end.

The defrosting control method that the embodiment of first aspect present invention provides, in a heating mode by air conditioner, detection The system parameter of air conditioner, and when system parameter reaches default defrost condition, control shut-off valve is closed, and electric heating part work is controlled Make that storage heater is carried out to heat to make air conditioner defrost in a heating mode, so that refrigerant is in the accumulation of heat by being electrically heated part heating Heat is fully absorbed when device, improves the temperature for flowing to indoor heat exchanger refrigerant, and then guarantee good heating effect, meanwhile, by Indoor heat exchanger, which is migrated to the higher refrigerant of temperature of outdoor heat exchanger, is conducive to outdoor heat exchanger progress defrost, guarantees that outdoor is changed Hot device is quick, thorough defrost, and avoiding four-way valve commutation from making air conditioner, defrost makes the larger shadow of fluctuations in indoor temperature in cooling mode The comfort level for ringing user effectively improves user's comforts of use, improves the satisfaction that user uses；By recording electric heating The operating time of part detects the temperature of storage heater, at work the long storage heater temperature that when reaching the first preset duration, will test Degree is recorded as T0, and after the second preset duration, and the storage heater thermograph that will test is Ti, and when whether Ti-T0 is greater than The judging result of fiducial temperature is to be stopped working when being by controlling electric heating part, and control shut-off valve is opened, control four-way commutation Valve commutation makes air conditioner defrost in cooling mode, so that the temperature rise of storage heater is very fast, defrost and heating in heat-storing material deficiency So that air conditioner is carried out defrost in cooling mode by four-way valve commutation in the case that effect is poor, and then guarantees air conditioner defrost Timeliness, validity, completeness, guarantee good defrosting effect, avoid defrosting effect poor and influence the heating of air conditioner Effect is effectively guaranteed good heating effect, guarantees that air conditioner can also operate normally progress in heat-storing material deficiency Defrosting promotes the usage experience of user, improves the satisfaction that user uses and when whether Ti-T0 is greater than the judgement knot of fiducial temperature When fruit is no, terminate, so that air conditioner continues the progress that do not commutate with heating mode four-way valve in the case where heat-storing material abundance Defrost guarantees good defrosting effect and heating effect, promotes user in defrost using the comfort level of air conditioner, promotes user Usage experience, improve the satisfaction that uses of user.

The defrosting control method flow diagram of one embodiment of the present of invention as shown in Figure 1a, further includes:

Step S116, if the judging result of step S112 be it is yes, push and show heat-storing material fault message.

Whether defrosting control method provided by the invention is greater than fiducial temperature by the temperature difference Ti-T0 in storage heater Judging result is when being, to push and show heat-storing material fault message, user is facilitated to understand the accumulation of heat of air conditioner accurately and in time Device lacks heat-storing material, and then is conducive to user and heat-storing material is replenished in time according to the fault message of heat-storing material, while effectively The defrost pattern that ground has prompted user's air conditioner current is conducive to user according to the current defrost pattern of air conditioner and controls air conditioner Working condition, to guarantee good heating effect, and then improve the satisfaction that user uses.Further, the event of storage heater Hindering information can be to lack heat-storing material information, or remaining heat-storing material and storage heater volume accounting information, Jin Eryou Suitable heat-storing material, operation letter are accurately added according to the accounting information of remaining heat-storing material and storage heater volume conducive to user Singly, conveniently, the usage experience of user is promoted.

The defrosting control method flow diagram of another embodiment of the present invention as shown in Figure 1 b, further includes:

Step S1062, control shut-off valve is closed, after third preset duration；

Step S1064, the work of control electric heating part, which carries out heating to storage heater, makes air conditioner defrost in a heating mode.

Defrosting control method provided by the invention is closed by control shut-off valve, and after third preset duration, control electricity adds Warmware work, which carries out heating to storage heater, makes air conditioner defrost in a heating mode, so that air conditioner is to meet defrost condition initial Stage first passes through the heat that storage heater stores under air conditioner heat-production mode and carries out defrost, so that the heat of storage heater storage obtains To effective use, and electric heating part work is controlled after third preset duration, storage heater is heated, avoid electric heating part one Straight work waste of energy, has effectively saved the energy, has avoided wasting, reduced use cost, improves the satisfaction that user uses.

In one embodiment of the invention, it is preferable that the first preset duration, the second preset duration, third preset duration For at least one of: relational expression, the relational expression of heat-storing material, fixed value of storage heater volume.

In this embodiment, the first preset duration, the second preset duration, third preset duration are at least one of but not Be limited to this: relational expression, the relational expression of heat-storing material, fixed value of storage heater volume, the first preset duration, the second preset duration and A variety of expression ways of third preset duration can satisfy the demand of different air conditioners, different accumulation of heat components and different user, fit With in extensive range.On the one hand, the first preset duration, the second preset duration and third preset duration are storage heater volume and accumulation of heat material The relational expression of material can guarantee air conditioner in the first preset duration by the heat-storing material being contained in storage heater and its appearance Amount absorbs enough heats and defrosts, and according to the case where storage heater temperature rises in the second preset duration, in time, accurately Ground controls the defrost pattern of air conditioner and the working condition of electric heating part, and then guarantees good defrosting effect and energy saving, The satisfaction that user uses is improved, by, in control electric heating part work, having after the third preset duration after shut-off valve is opened The energy has been saved to effect, has avoided waste；On the one hand, the first preset duration and the second preset duration are fixed value, facilitate user Setting, is conducive to operate.

In one embodiment of the invention, it is preferable that fiducial temperature is at least one of: the relationship of storage heater volume Formula, the relational expression of heat-storing material, the relational expression of the first preset duration, the relational expression of the second preset duration, third preset duration Relational expression, fixed value.

In this embodiment, fiducial temperature is at least one of but not limited to this: the relational expression of storage heater volume, accumulation of heat The relational expression of material, the relational expression of the first preset duration, the relational expression of the second preset duration, fixed value, fiducial temperature it is a variety of Expression way can satisfy the demand of different air conditioners, different accumulation of heat components and different user, applied widely.

In one embodiment of the invention, it is preferable that system parameter is at least one of or combinations thereof: storage heater Temperature, the temperature of condenser, the runing time of compressor, the running frequency of compressor.

In this embodiment, system parameter is at least one of or combinations thereof but not limited to this: it is the temperature of storage heater, cold Temperature, the runing time of compressor, the running frequency of compressor of condenser, a variety of expression-forms of system parameter can satisfy not It is applied widely with the demand of air conditioner and different user.

In one embodiment of the invention, it is preferable that the first preset duration be 4 minutes, fiducial temperature be 50 DEG C, second Preset duration is 0.5 minute, and third preset duration is 2 minutes.

In this embodiment, air conditioner controls shut-off valve when system parameter reaches default defrost condition in a heating mode It closes, and control electric heating part work after the 2 minutes, so that air conditioner is meeting the defrost condition initial stage, first passes through accumulation of heat The heat that device stores under air conditioner heat-production mode carries out defrost, so that the heat of storage heater storage is utilized effectively, avoids Electric heating part works always waste of energy, has effectively saved the energy, has avoided wasting, and reduces use cost, while making refrigerant Heat is fully absorbed in the storage heater by being electrically heated part heating, improves the temperature for flowing to indoor heat exchanger refrigerant, in turn Guarantee good heating effect, simultaneously as it is higher to migrate the temperature to outdoor heat exchanger refrigerant by indoor heat exchanger, makes to have leisure Adjust device that can carry out defrost in a heating mode, and the refrigerant of higher temperature is conducive to outdoor heat exchanger and carries out defrost, guarantees room External heat exchanger is quick, thorough defrost, avoid four-way valve commutation make air conditioner in cooling mode defrost make fluctuations in indoor temperature compared with Greatly, and then user's comforts of use and satisfaction are improved；By recording the operating time of electric heating part, and in electric heating part work Storage heater thermograph is T0 by work 4 minutes, and storage heater thermograph is Ti by record after 0.5 minute, whether judges Ti-T0 Greater than 50 DEG C of fiducial temperature, if so, control electric heating part stops working, control shut-off valve is opened, control four-way reversing valve commutation Make air conditioner defrost in cooling mode, so that commutating in the case where heat-storing material deficiency defrosting effect is poor by four-way valve So that air conditioner is carried out defrost in cooling mode, and then guarantee timeliness, validity, the completeness of air conditioner defrost, guarantees good Good defrosting effect, avoids defrosting effect poor and influences the heating effect of air conditioner, is effectively guaranteed good heating effect Fruit guarantees that air conditioner can also be operated normally in heat-storing material deficiency and defrosts, promotes the usage experience of user, improve and use The satisfaction that family uses, meanwhile, it pushes and shows heat-storing material fault message, user is facilitated to understand air conditioner accurately and in time Storage heater lack heat-storing material, be conducive to user according to the fault message of heat-storing material and heat-storing material be replenished in time；Work as Ti-T0 Whether be greater than fiducial temperature judging result be it is no when, terminate so that heat-storing material abundance in the case where, air conditioner continue with Heating mode four-way valve, which does not commutate, carries out defrost, guarantees good defrosting effect and heating effect, and promote user makes in defrost With the comfort level of air conditioner, the usage experience of user is promoted, improves the satisfaction that user uses.

As shown in Figure 2 a, embodiment according to the second aspect of the invention, it is also proposed that a kind of defrosting control system 200 is used In air conditioner, defrosting control system includes: first detection unit 202, in a heating mode for air conditioner, detects air conditioner System parameter；First judging unit 204, for judging whether system parameter reaches default defrost condition；First execution unit 206206, for when the judging result of the first judging unit 204, which is, is, control shut-off valve closing, control electric heating part to work Carrying out heating to storage heater makes air conditioner defrost in a heating mode, starts second detection unit 210 and recording unit 208；The Two detection units 210, for detecting storage heater temperature；Recording unit 208, for recording the operating time of electric heating part, in work When reaching the first preset duration as duration, the storage heater thermograph that second detection unit 210 is detected is T0, and pre- second If after duration, the storage heater thermograph that second detection unit 210 is detected is Ti；Second judgment unit 212 is stored for judging Whether hot device temperature difference Ti-T0 is greater than fiducial temperature；Second execution unit 214, for the judgement knot in second judgment unit 212 Fruit is when being, control electric heating part stops working, and control shut-off valve is opened, and control four-way valve commutation makes air conditioner in refrigeration mode Lower defrost terminates when the judging result of second judgment unit 212 is no.

The defrosting control system 200 that the embodiment of second aspect of the present invention provides, by first detection unit 202 in air-conditioning Under device heating mode, the system parameter of air conditioner is detected, the first judging unit 204 judges whether system parameter reaches defaultization Frost, the first execution unit 206206 when the judging result of the first judging unit 204 is to be, close by control shut-off valve, control electricity Heating member work, which carries out heating to storage heater, makes air conditioner defrost in a heating mode, so that refrigerant adds by being electrically heated part Heat is fully absorbed when the storage heater of heat, improves the temperature for flowing to indoor heat exchanger refrigerant, and then guarantee good heating effect, Meanwhile outdoor heat exchanger is conducive to by the higher refrigerant of temperature that indoor heat exchanger is migrated to outdoor heat exchanger and carries out defrost, it protects Demonstrate,prove that outdoor heat exchanger is quick, thorough defrost, avoiding four-way valve commutation from making air conditioner, defrost makes room temperature wave in cooling mode The comfort level of dynamic larger impact user, effectively improves user's comforts of use, improves the satisfaction that user uses；Pass through Two detection units 210 detect storage heater temperature, the operating time of electric heating part are recorded by recording unit 208, and at work When length reaches the first preset duration, the storage heater thermograph that will test is T0, and after the second preset duration, be will test Storage heater thermograph be Ti, judge whether Ti-T0 is greater than fiducial temperature by second judgment unit 212, second executes list When the judging result of second judgment unit 212 is to be, control electric heating part stops working member 214, and control shut-off valve is opened, control Four-way reversing valve commutation processed makes air conditioner defrost in cooling mode, so that the temperature rise of storage heater is very fast in heat-storing material deficiency, So that air conditioner is carried out defrost in cooling mode by four-way valve commutation in the case that defrost and heating effect are poor, and then guarantees Timeliness, validity, the completeness of air conditioner defrost, guarantee good defrosting effect, avoid defrosting effect poor and influence empty The heating effect for adjusting device is effectively guaranteed good heating effect, guarantees that air conditioner also can be just in heat-storing material deficiency Often operation defrosts, and promotes the usage experience of user, improves the satisfaction that user uses, is existed by the second execution unit 214 The judging result of second judgment unit 212 terminates when being no, so that air conditioner continues to make in the case where heat-storing material abundance Heat pattern four-way valve, which does not commutate, carries out defrost, guarantees good defrosting effect and heating effect, promotes user and uses in defrost The comfort level of air conditioner promotes the usage experience of user, improves the satisfaction that user uses.

Defrosting control system 200 as shown in Figure 2 a, it is preferable that further include: display unit 216, for when the second judgement The judging result of unit 212 is when being, to push and show heat-storing material fault message.

In this embodiment, through display unit 216 when the judging result of second judgment unit 212 is to be, push is simultaneously Show that heat-storing material fault message, the storage heater for facilitating user to understand air conditioner accurately and in time lack heat-storing material, Jin Eryou Heat-storing material is replenished in time according to the fault message of heat-storing material conducive to user, has simultaneously effective prompted user's air conditioner current Defrost pattern, be conducive to the working condition that user controls air conditioner according to the current defrost pattern of air conditioner, it is good to guarantee Heating effect, and then improve the satisfaction that uses of user.Further, the fault message of storage heater can be to lack accumulation of heat material Expect information, or remaining heat-storing material and storage heater volume accounting information, and then be conducive to user according to remaining accumulation of heat material The accounting information of material and storage heater volume accurately adds suitable heat-storing material, simple, convenient, and promote user uses body It tests.

Defrosting control system 200 as shown in Figure 2 b, in any of the above-described technical solution, it is preferable that the first execution unit 206 further include: cut-off valve control unit, VCU 2062, for controlling shut-off valve when the judging result of the first judging unit 204, which is, is It closes；Timing unit 2064, the duration that record shut-off valve is closed, and when duration reaches third preset duration, to electric heating part Control unit 2066 sends enabling signal；Electric heating part control unit 2066, for controlling electric heating part work according to enabling signal Make, carrying out heating to storage heater makes air conditioner defrost in a heating mode.

In this embodiment, through cut-off valve control unit, VCU 2062 when the judging result of the first judging unit 204 is to be, Shut-off valve is controlled to close, timing unit 2064 records the duration that shut-off valve is closed, and when duration reaches third preset duration, to Electric heating part control unit 2066 sends enabling signal, and electric heating part control unit 2066 controls electric heating according to enabling signal Part work, which carries out heating to storage heater, makes air conditioner defrost in a heating mode, so that air conditioner is meeting the initial rank of defrost condition Section first passes through the heat that storage heater stores under air conditioner heat-production mode and carries out defrost, so that the heat of storage heater storage obtains Effective use, and control electric heating part work after third preset duration and storage heater is heated, avoid electric heating part always Work waste of energy, has effectively saved the energy, has avoided wasting, and reduces use cost, improves the satisfaction that user uses.

In one embodiment of the invention, it is preferable that the first preset duration be 4 minutes, fiducial temperature be 50 DEG C, first Preset temperature is 80 DEG C, and the second preset temperature is 20 DEG C, and the second preset duration is 0.5 minute, and third preset duration is 2 minutes.

In this embodiment, air conditioner controls shut-off valve when system parameter reaches default defrost condition in a heating mode It closes, and control electric heating part work after the 2 minutes, so that air conditioner is meeting the defrost condition initial stage, first passes through accumulation of heat The heat that device stores under air conditioner heat-production mode carries out defrost, so that the heat of storage heater storage is utilized effectively, avoids Electric heating part works always waste of energy, has effectively saved the energy, has avoided wasting, and reduces use cost, while making refrigerant Heat is fully absorbed in the storage heater by being electrically heated part heating, improves the temperature for flowing to indoor heat exchanger refrigerant, in turn Guarantee good heating effect, simultaneously as it is higher to migrate the temperature to outdoor heat exchanger refrigerant by indoor heat exchanger, makes to have leisure Adjust device that can carry out defrost in a heating mode, and the refrigerant of higher temperature is conducive to outdoor heat exchanger and carries out defrost, guarantees room External heat exchanger is quick, thorough defrost, avoid four-way valve commutation make air conditioner in cooling mode defrost make fluctuations in indoor temperature compared with Greatly, and then user's comforts of use and satisfaction are improved；By recording the operating time of electric heating part, and in electric heating part work Storage heater thermograph is T0 by work 4 minutes, and storage heater thermograph is Ti by record after 0.5 minute, whether judges Ti-T0 Greater than 50 DEG C of fiducial temperature, if so, control electric heating part stops working, control shut-off valve is opened, control four-way reversing valve commutation Make air conditioner defrost in cooling mode, so that commutating in the case where heat-storing material deficiency defrosting effect is poor by four-way valve So that air conditioner is carried out defrost in cooling mode, and then guarantee timeliness, validity, the completeness of air conditioner defrost, guarantees good Good defrosting effect, avoids defrosting effect poor and influences the heating effect of air conditioner, is effectively guaranteed good heating effect Fruit guarantees that air conditioner can also be operated normally in heat-storing material deficiency and defrosts, promotes the usage experience of user, improve and use The satisfaction that family uses, meanwhile, it pushes and shows heat-storing material fault message, user is facilitated to understand air conditioner accurately and in time Storage heater lack heat-storing material, be conducive to user according to the fault message of heat-storing material and heat-storing material be replenished in time；If it is not, i.e. Ti-T0 whether be greater than fiducial temperature judging result be it is no when, terminate so that heat-storing material abundance in the case where, air conditioner Continuation is not commutated with heating mode four-way valve carries out defrost, guarantees good defrosting effect and heating effect, promotes user and is changing Using the comfort level of air conditioner when white, the usage experience of user is promoted, improves the satisfaction that user uses.

In a particular embodiment, the first detection unit and second detection unit in defrosting control system provided by the invention It can be controlled by one or more microprocessors, the first judging unit, second judgment unit can be by one or more micro processs Device control, the first execution unit, the second execution unit can be controlled by one or more microprocessors.

As shown in Figure 3a, embodiment in accordance with a further aspect of the present invention, the invention proposes a kind of air conditioner 300, packets It includes: defrosting control system 200 described in any of the above-described technical solution.

The air conditioner 300 that further aspect of the present invention provides, including defrosting control system described in any of the above-described technical solution 200.Because air conditioner 300 of the invention is provided with the defrosting control system 200 of second aspect embodiment, thus has second aspect Whole beneficial effects of embodiment defrosting control system 200, details are not described herein.

As shown in Figure 3b, air conditioner 300 provided by the invention, further includes: compressor 102；Indoor heat exchanger 104；It is outdoor Heat exchanger 106；Four-way valve 108 is arranged between indoor heat exchanger 104 and outdoor heat exchanger 106, and two of four-way valve 108 connect The air inlet and air outlet of mouth connection compressor 102, one end of the another two orifice indoor heat exchanger 104 of four-way valve 108 With one end of outdoor heat exchanger 106；The other end of heat exchanger 104 and outdoor heat exchanger 106 indoors is arranged in throttling set 110 The other end between；Accumulation of heat component 112 is arranged between four-way valve 108 and outdoor heat exchanger 106, and accumulation of heat component 112 includes storing Hot device 1122, electric heating part 1124 and temperature-detecting device, for accommodating heat-storing material, electric heating part 1124 is set storage heater 1122 It sets on storage heater 1122, for heating to storage heater 1122, temperature-detecting device is arranged on storage heater 1122, is used for Detect storage heater temperature；Shut-off valve 114 is arranged between four-way valve 108 and outdoor heat exchanger 106, in parallel with accumulation of heat component 112 Connection.

Air conditioner 300 provided by the invention, by the way that accumulation of heat component is arranged between four-way valve 108 and outdoor heat exchanger 106 112, when air conditioner 300 reaches defrost condition in a heating mode, control shut-off valve 114 is closed, the work pair of electric heating part 1124 Storage heater 1122 is heated, so that storage heater 1122 stores heat by the heat-storing material accommodated, electric heating part 1124 is heated The heat that storage heater 1122 keeps heat-storing material storage sufficient, refrigerant is in the storage heater 1122 by being electrically heated the heating of part 1124 Heat is fully absorbed, improves the temperature for flowing to 104 refrigerant of indoor heat exchanger, and then guarantee good heating effect, simultaneously as It is higher that temperature to the refrigerant of outdoor heat exchanger 106 is migrated by indoor heat exchanger 104, so that air conditioner 300 is in a heating mode Defrost can also be carried out, and the refrigerant of higher temperature is conducive to outdoor heat exchanger 106 and carries out defrost, guarantees that outdoor heat exchanger 106 is fast Fast, thorough defrost avoids the commutation of four-way valve 108 from making the defrost fluctuations in indoor temperature larger impact in cooling mode of air conditioner 300 The comfort level of user effectively improves user's comforts of use, improves the satisfaction that user uses；By being arranged in storage heater Temperature-detecting device on 1122 detects 1122 temperature of storage heater, and storage heater temperature difference is greater than fiducial temperature within a preset time When control electric heating part 1124 stop working, control shut-off valve 114 open, four-way valve 108 commutation make air conditioner 300 refrigeration mould Defrost under formula, so that making air conditioner 300 exist by the commutation of four-way valve 108 in the case where heat-storing material deficiency defrosting effect is poor Defrost is carried out under refrigeration mode, and then guarantees timeliness, validity, the completeness of 300 defrost of air conditioner, guarantees good defrost Effect avoids defrosting effect poor and influences the heating effect of air conditioner 300, is effectively guaranteed good heating effect, protects Card air conditioner 300 can be operated normally and be defrosted, and promote the usage experience of user, improve the satisfaction that user uses, and The storage heater temperature difference terminates when being not more than fiducial temperature, so that air conditioner continues to heat mould in the case where heat-storing material abundance Formula four-way valve, which does not commutate, carries out defrost, guarantees good defrosting effect and heating effect, promotes user and uses air-conditioning in defrost The comfort level of device promotes the usage experience of user, improves the satisfaction that user uses.Further, by being arranged in four-way valve Shut-off valve 114 between 108 and outdoor heat exchanger 106 is connected in parallel with accumulation of heat component 112, is conducive to control accumulation of heat component 112 Or the working condition of shut-off valve 114 avoids the need for shutting down to meet air conditioner to meet air conditioner 300 with different mode operations 300 influence the comfort that user uses with different mode operations, and then ensure that air conditioner 300 in the process of running can be with Switch different modes, promote the usage experience of user, improves the satisfaction that user uses.

In one embodiment of the invention, it is preferable that temperature-detecting device is temperature sensor.

In this embodiment, temperature-detecting device is temperature sensor, and cost is relatively low for temperature sensor, compact-sized, clever Sensitivity is higher, can easily be arranged on storage heater 1122, and meet the structure of storage heater 1122, further, temperature inspection Surveying device may be other temperature-detecting devices met the requirements.Further, temperature-detecting device can be set in accumulation of heat It is also can be set inside device 1122 in 1122 outer surface of storage heater, can satisfy different temperatures detection device and different storage heaters The demand of 1122 structures, it is applied widely

In one embodiment of the invention, it is preferable that heat-storing material is covert heat-storing material.

In this embodiment, heat-storing material is covert heat-storing material, can stablize, store heat for a long time, avoid storing Hot 1122 temperature of device rises rapidly and refrigerator oil is caused to be carbonized, while 1122 temperature change of storage heater being avoided comparatively fast to need frequently It opens electric heating part 1124 and generates rush of current, covert heat-storing material can guarantee good heating effect and defrosting effect, Improve the satisfaction that user uses.Further, covert heat-storing material is at least one of or combinations thereof but not limited to this: Water, paraffin.

In one embodiment of the invention, it is preferable that throttling set 110 is electric expansion valve.

In this embodiment, throttling set 110 is electric expansion valve, so that according to the different operational modes of air conditioner 300 It controls electric expansion valve to open with different aperture threshold values, and then meets the different demands to coolant quantity of 300 system of air conditioner, It is applied widely, and can guarantee good heating effect and defrosting effect, and then improve the satisfaction that user uses.Into one Step ground, air conditioner 300 in a heating mode defrost when, electric expansion valve is sufficient cold to guarantee with the unlatching of maximum opening threshold value Matchmaker, which measures, carries out energy exchange, guarantees good defrosting effect and heating effect, improves the satisfaction that user uses.

In a particular embodiment, air conditioner is heat pump type air conditioner, and in a heating mode, indoor heat exchanger is condenser, Outdoor heat exchanger is evaporator, and refrigerant is changed into the gas of high temperature and pressure by compressor compresses, enters condensation by four-way valve Device becomes the liquid of medium temperature high pressure after condenser inhales cold heat release, becomes the liquid of low-temp low-pressure after throttling set, by steaming After hair device heat absorption lets cool effect, becomes the gas of low-temp low-pressure, return to compressor by four-way valve, then proceed to recycle.It is making Under cold mode, indoor heat exchanger is evaporator, and outdoor heat exchanger is condenser, and refrigerant is changed into high temperature height by compressor compresses The gas of pressure becomes the liquid of medium temperature high pressure into outdoor condenser after condenser inhales cold heat release, after throttling set, becomes Become the gas of low-temp low-pressure after evaporator heat absorption lets cool effect at the liquid of low-temp low-pressure, return to pressure by four-way valve Contracting machine then proceedes to recycle.

In the present invention, term " multiple " then refers to two or more, unless otherwise restricted clearly.Term " peace Dress ", " connected ", " connection ", the terms such as " fixation " shall be understood in a broad sense, can also be with for example, " connection " may be a fixed connection It is to be detachably connected, or be integrally connected；" connected " can be directly connected, can also be indirectly connected through an intermediary.It is right For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific conditions.

In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc. Mean that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one reality of the invention It applies in example or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment or reality Example.Moreover, description particular features, structures, materials, or characteristics can in any one or more of the embodiments or examples with Suitable mode combines.

These are only the preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification, Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims

1. a kind of defrosting control method is used for air conditioner, which is characterized in that the air conditioner includes compressor, four-way valve, outdoor The setting of heat exchanger, accumulation of heat component and shut-off valve, the accumulation of heat component and shut-off valve parallel connection is in the four-way valve and described Between outdoor heat exchanger, the accumulation of heat component includes storage heater and electric heating part, and the accumulation of heat component can make the air-conditioning Device defrost in a heating mode, the defrosting control method include:

The air conditioner in a heating mode, detects the system parameter of the air conditioner；

Judge whether the system parameter reaches default defrost condition；

It is closed if so, controlling the shut-off valve, controlling the electric heating part work and heat to the storage heater makes the sky Adjust device defrost in a heating mode；

The operating time for recording the electric heating part detects the storage heater temperature, and it is default to reach first in the operating time It is T0 by the detected storage heater thermograph, and after the second preset duration, described in detected when duration Storage heater thermograph is Ti；

Judge whether the storage heater temperature difference Ti-T0 is greater than fiducial temperature；

Stop working if so, controlling the electric heating part, control the shut-off valve and open, control the four-way valve commutation make it is described Air conditioner defrost in cooling mode, if it is not, terminating.

2. defrosting control method according to claim 1, which is characterized in that further include:

When it is described judge whether the storage heater temperature difference Ti-T0 is greater than the judging result of the fiducial temperature to be when, push And show heat-storing material fault message.

3. defrosting control method according to claim 1, which is characterized in that the control shut-off valve is closed, control Electric heating part work, which carries out heating to the storage heater, makes the specific steps packet of air conditioner defrost in a heating mode It includes:

The shut-off valve is controlled to close；

After third preset duration, controlling the electric heating part work and heat to the storage heater is making the air conditioner Defrost under heat pattern.

4. defrosting control method according to claim 2, which is characterized in that the control shut-off valve is closed, control Electric heating part work, which carries out heating to the storage heater, makes the specific steps packet of air conditioner defrost in a heating mode It includes:

The shut-off valve is controlled to close；

5. defrosting control method according to claim 4, which is characterized in that

First preset duration, second preset duration, the third preset duration are at least one of: the accumulation of heat The relational expression of device volume, the relational expression of the heat-storing material, fixed value.

6. defrosting control method according to claim 5, which is characterized in that further include:

The fiducial temperature is at least one of: relational expression, the relational expression of the heat-storing material, institute of the storage heater volume State the relational expression, the relational expression of second preset duration, the relational expression of the third preset duration, fixation of the first preset duration Value.

7. defrosting control method according to claim 1, which is characterized in that the system parameter be at least one of or A combination thereof:

The temperature of the storage heater, the temperature of the condenser of the air conditioner, the runing time of the compressor, the compressor Running frequency.

8. defrosting control method according to claim 6, which is characterized in that

First preset duration is 4 minutes, and the fiducial temperature is 50 DEG C, and second preset duration is 0.5 minute, described Third preset duration is 2 minutes.

9. a kind of defrosting control system, it to be used for air conditioner, which is characterized in that the defrosting control system includes:

First detection unit in a heating mode for the air conditioner detects the system parameter of the air conditioner；

First judging unit, for judging whether the system parameter reaches default defrost condition；

First execution unit, for controlling the cut-off of the air conditioner when the judging result of first judging unit, which is, is Valve is closed, and the electric heating part work for controlling the air conditioner, which carries out heating to the storage heater of the air conditioner, makes the air conditioner exist Defrost under heating mode starts second detection unit and recording unit；

The second detection unit, for detecting the storage heater temperature；

The recording unit, for recording the operating time of the electric heating part, the operating time reach first it is default when When long, the storage heater thermograph that the second detection unit is detected is T0, and after the second preset duration, will be described The storage heater thermograph of second detection unit detection detection is Ti；

Second judgment unit, for judging whether the storage heater temperature difference Ti-T0 is greater than fiducial temperature；

Second execution unit is to control the electric heating part when being and stop for the judging result in the second judgment unit Work controls the shut-off valve and opens, and the four-way valve commutation for controlling the air conditioner changes the air conditioner in cooling mode Frost terminates when the judging result of the second judgment unit is no.

10. defrosting control system according to claim 9, which is characterized in that further include:

Display unit, for when the judging result of the second judgment unit, which is, is, pushing and showing that heat-storing material failure is believed Breath.

11. defrosting control system according to claim 9, which is characterized in that first execution unit further include:

End valve control unit, VCU, is closed for when the judging result of first judging unit, which is, is, controlling the shut-off valve；

Timing unit records the duration that the shut-off valve is closed, and when the duration reaches third preset duration, to the electricity Heating member control unit sends enabling signal；

The electric heating part control unit, for the electric heating part work being controlled, to the accumulation of heat according to the enabling signal Device, which carries out heating, makes air conditioner defrost in a heating mode.

12. defrosting control system according to claim 10, which is characterized in that first execution unit further include:

13. defrosting control system according to claim 12, which is characterized in that

14. defrosting control system according to claim 13, which is characterized in that further include:

15. defrosting control system according to claim 9, which is characterized in that the system parameter is at least one of Or combinations thereof:

The temperature of the storage heater, the temperature of the condenser of the air conditioner, the runing time of the compressor of the air conditioner, institute State the running frequency of the compressor of air conditioner.

16. defrosting control system according to claim 14, which is characterized in that

First preset duration is 4 minutes, and the fiducial temperature is 50 DEG C, and first preset temperature is 80 DEG C, described the Two preset temperatures are 20 DEG C, and second preset duration is 0.5 minute, and the third preset duration is 2 minutes.

17. a kind of air conditioner characterized by comprising

Defrosting control system as described in any one of claim 9 to 16.