CN108518821A - The control method and device of air-conditioning - Google Patents

The control method and device of air-conditioning Download PDF

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Publication number
CN108518821A
CN108518821A CN201810629106.6A CN201810629106A CN108518821A CN 108518821 A CN108518821 A CN 108518821A CN 201810629106 A CN201810629106 A CN 201810629106A CN 108518821 A CN108518821 A CN 108518821A
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CN
China
Prior art keywords
air
conditioning
target
expansion valve
current time
Prior art date
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Granted
Application number
CN201810629106.6A
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Chinese (zh)
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CN108518821B (en
Inventor
张博博
席战利
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Midea Group Co Ltd
GD Midea Air Conditioning Equipment Co Ltd
Original Assignee
Midea Group Co Ltd
Guangdong Midea Refrigeration Equipment Co Ltd
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Priority to CN201810629106.6A priority Critical patent/CN108518821B/en
Publication of CN108518821A publication Critical patent/CN108518821A/en
Application granted granted Critical
Publication of CN108518821B publication Critical patent/CN108518821B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • F24F11/64Electronic processing using pre-stored data
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/10Temperature
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00Control inputs relating to system states
    • F24F2140/20Heat-exchange fluid temperature

Abstract

The invention discloses the control method of air-conditioning and device, the air-conditioning is run in cooling mode, the described method comprises the following steps:Identify that the air-conditioning inner compressor is run according to minimum operating frequency;Obtain indoor temperature and indoor preset temperature;If the indoor temperature is less than the preset temperature, outdoor temperature is obtained;The target inlet of evaporator is obtained according to the outdoor temperature and the indoor temperature;According to the target inlet of the evaporator, the aperture of electric expansion valve is adjusted, the technical issues of refrigerating capacity is more than indoor actual demand cold is exported when efficiently solving air-conditioning low-limit frequency operation in the prior art.

Description

The control method and device of air-conditioning
Technical field
The present invention relates to air conditioner technical field more particularly to the control methods and device of a kind of air-conditioning.
Background technology
In the related technology, the operational mode of convertible frequency air-conditioner is:When starting, control compressor is run with high frequency, indoor temperature Rapid decrease (shuts down offset up to temperature, is generally preset as 1 DEG C~5 when indoor temperature is reduced to some value lower than preset temperature DEG C, it is different according to each factory settings) when, air-conditioning can reach temperature and shut down, i.e. compressor is out of service, indoor as the time increases Temperature recovery to Auto Power On condition when, air-conditioning can reopen again.And as the difference of indoor temperature and preset temperature subtracts In small process, the running frequency of compressor can also reduce therewith, finally the stage before shutdown, and compressor can operate in can The minimum frequency of operation makes air conditioner refrigerating ability be preferably minimized, to maintain room temperature no longer to decline.
But present inventor has found that above-mentioned technology at least has the following technical problems:When indoor temperature is shut down close to up to temperature When value, since refrigerant flow rate is relatively low, in order to ensure the target exhaust value, the target exhaust degree of superheat or target air-breathing of electric expansion valve The aperture of the degree of superheat, electric expansion valve can constantly reduce, and therefore, when outdoor temperature is begun to decline, air conditioner refrigerating ability can be slow It is slow to increase, it is more than indoor required refrigeration demand, easily causes air-conditioning repeatedly starting and stopping at this time, greatly reduce indoor temperature Hot comfort can also have some impact on the reliability of compressor.
Invention content
It is minimum to solve air-conditioning in the prior art by providing a kind of control method and device of air-conditioning for the embodiment of the present application The technical issues of output refrigerating capacity is more than indoor actual demand cold when frequency is run, effectively increase indoor temperature thermal comfort Property.
The embodiment of the present application provides a kind of control method of air-conditioning, and the air-conditioning is run in cooling mode, the side Method includes the following steps:Identify that the air-conditioning inner compressor is run according to minimum operating frequency;Obtain indoor temperature and indoor Preset temperature;If the indoor temperature is less than the preset temperature, outdoor temperature is obtained;According to the outdoor temperature and institute State the target inlet that indoor temperature obtains evaporator;According to the target inlet of the evaporator, electronic expansion is adjusted The aperture of valve.
According to one embodiment of present invention, the identification air-conditioning inner compressor is run according to minimum operating frequency, Including:The running frequency for obtaining the compressor current time, by the running frequency at current time and the minimum operating frequency It is compared, if the running frequency at current time is consistent with the minimum operating frequency, it is determined that the compressor is according to institute State minimum operating frequency operation.
According to one embodiment of present invention, according to the target inlet of the evaporator, electric expansion valve is adjusted Aperture further includes:Obtain the practical inlet temperature at the evaporator current time;According to the practical inlet temperature and the mesh Inlet temperature is marked, determines the target aperture of the electric expansion valve;The electric expansion valve is carried out according to the target aperture Adjustment.
According to one embodiment of present invention, described according to the practical inlet temperature and the target inlet, really The target aperture of the fixed electric expansion valve, including:According to the practical inlet temperature and the target inlet, institute is determined State the first inlet temperature difference of evaporator;According in the practical inlet temperature and the evaporator at the evaporator current time The practical inlet temperature at one moment determines the second inlet temperature difference of the evaporator;According to first inlet temperature differential Value and the second inlet temperature difference, determine the target aperture of the electric expansion valve.
According to one embodiment of present invention, the target aperture for determining the electric expansion valve further includes:According to described One inlet temperature difference and the second inlet temperature difference determine that the target at the electronic expansion valve opening current time is adjusted Correction value;Target adjusting correction value is multiplied with correction factor, and is added with the current aperture of the electric expansion valve, is obtained Take the target aperture.
According to one embodiment of present invention, it is described by the target adjusting correction value be multiplied with correction factor before, and also Including:By the absolute value of the first inlet temperature difference and preset threshold value comparison;If the absolute value is more than or waits In the preset threshold value, it is determined that the correction factor is the first preset value;If the absolute value is less than described preset Threshold value, it is determined that the correction factor is the second preset value.
According to one embodiment of present invention, after the aperture of the adjustment electric expansion valve, further include:Persistently obtain institute State the running frequency at air-conditioning current time and the target operating frequency at current time;If the running frequency at current time is described Minimum operation frequency, and the target operating frequency at current time is less than minimum operating frequency, then persistently adjusts the electric expansion valve Aperture;If the running frequency at current time is more than the minimum operating frequency or the target frequency at current time is more than Or be equal to the minimum operating frequency, then control the initial opening that air-conditioning restores the electric expansion valve.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
1, due to when the running frequency of air-conditioning reaches minimum operating frequency and indoor temperature and is less than indoor preset temperature, The aperture of electric expansion valve is adjusted according to the target inlet of evaporator, so, efficiently solve in the prior art that air-conditioning is most The technical issues of output refrigerating capacity is more than indoor actual demand cold when low frequency is run effectively increases indoor temperature heat and relaxes Adaptive avoids air-conditioning repeatedly starting and stopping.
2, it according to current outdoor temperature and indoor temperature, the accurate target inlet for determining evaporator, and then realizes The aperture that electric expansion valve is adjusted according to the target inlet of evaporator, to make the practical inlet temperature of evaporator be equal to mesh Inlet temperature is marked, the cold of indoor unit is reduced.
Description of the drawings
Fig. 1 is the flow chart of the control method of the air-conditioning of the embodiment of the present invention;
Fig. 2 is the flow chart of the control method of the air-conditioning of a specific embodiment of the invention;
Fig. 3 is the block diagram of the control device of the air-conditioning of the embodiment of the present invention;
Fig. 4 is the block diagram of the air-conditioning of the embodiment of the present invention.
Specific implementation mode
In order to solve the problems, such as that air conditioner refrigerating ability is more than indoor required refrigeration demand, reach minimum operation frequency in air-conditioning In the case that rate and indoor temperature are less than indoor preset temperature, according to current outdoor temperature and indoor temperature, electronics is adjusted The aperture of expansion valve reduces the cold of indoor unit, effectively avoids to make the inlet temperature of evaporator be equal to target inlet Air-conditioning frequency start and stop, improve the comfort of user.
In order to better understand the above technical scheme, the exemplary reality of the disclosure is more fully described below with reference to accompanying drawings Apply example.Although showing the exemplary embodiment of the disclosure in attached drawing, it being understood, however, that may be realized in various forms this public affairs It opens without should be limited by embodiments set forth here.It is to be able to be best understood from this on the contrary, providing these embodiments It is open, and the scope of the present disclosure can be completely communicated to those skilled in the art.
In order to better understand the above technical scheme, in conjunction with appended figures and specific embodiments to upper Technical solution is stated to be described in detail.
Embodiment one
Fig. 1 is the flow chart of the control method of the air-conditioning of the embodiment of the present invention.Wherein, air-conditioning is run in cooling mode. As shown in Figure 1, the control method of the air-conditioning of the embodiment of the present invention, includes the following steps:
S101:Identification air-conditioning inner compressor is run according to minimum operating frequency.
According to one embodiment of present invention, identification air-conditioning inner compressor is run according to minimum operating frequency, including:It obtains The running frequency at current time is compared by the running frequency at compressor current time with minimum operating frequency, if currently The running frequency at moment is consistent with minimum operating frequency, it is determined that compressor is run according to minimum operating frequency.
It should be understood that as the air-conditioning opening time increases, air conditioner refrigerating amount increases, and compressor can be by initial air-conditioning system Highest frequency when cold boot continuously decreases, and when indoor temperature is reduced near preset temperature, the frequency of compressor is possible to It is reduced to minimum operating frequency, when compressor of air conditioner running frequency is reduced to low-limit frequency, target operating frequency is still below most Low running frequency then shows that the ability of air-conditioning output at this time is more than the refrigerating capacity of indoor needs at present.
That is, during air conditioner refrigerating mode operation, the running frequency of air-conditioning inner compressor is obtained in real time, and will The running frequency at current time is compared with minimum operating frequency, in running frequency and the minimum operating frequency one at current time When cause, determine that compressor is run according to low-limit frequency.
S102:Obtain indoor temperature and indoor preset temperature.
S103:If indoor temperature is less than preset temperature, outdoor temperature is obtained.
In other words, when running frequency is minimum operating frequency, indoor temperature and indoor preset temperature are obtained, by Indoor Temperature Degree be compared with preset temperature, if indoor temperature temperature be greater than or equal to preset temperature, persistently obtain indoor temperature and Preset temperature is judged, if indoor temperature is less than preset temperature, obtains outdoor temperature.
S104:The target inlet of evaporator is obtained according to outdoor temperature and indoor temperature.
S105:According to the target inlet of evaporator, the aperture of electric expansion valve is adjusted.
Specifically, in air conditioner refrigerating operational process, the current operation frequency of air-conditioning inner compressor is obtained in real time, and is known Do not go out whether compressor runs according to minimum operating frequency, when compressor is run according to minimum operating frequency, obtains Indoor Temperature Degree and indoor preset temperature when temperature is less than preset temperature indoors, obtain outdoor temperature, according to outdoor temperature and Indoor Temperature Degree obtains the target inlet of evaporator, according to the target inlet of evaporator, to adjust the aperture of electric expansion valve.
The embodiment of the present invention can be minimum operating frequency and indoor temperature in the running frequency of air-conditioning inner compressor as a result, When less than indoor preset temperature, the target inlet of evaporator is determined according to current outdoor temperature and indoor temperature, to The aperture of electric expansion valve is adjusted according to the target inlet of evaporator, so that the practical inlet temperature of evaporator is equal to target Inlet temperature changes target inlet, the cold in indoor unit is made to reach mesh that is, in the case where not changing compressor frequency Mark cold, avoid indoor unit in advance reach temperature shut down and caused by compressor repeatedly starting and stopping.Meanwhile because the aperture of electric expansion valve increases Greatly, and without start/stop of compressor, power consumption is much less than general control mode.
According to one embodiment of present invention, the target inlet of evaporator is obtained according to outdoor temperature T4 and indoor temperature T1 Temperature Tco can further include:The mode of the mode or formula tabled look-up.
Wherein, the target inlet of corresponding evaporator can be inquired according to table 1.
Table 1
It should be understood that when there is no corresponding outdoor temperature T4 or interior indoor temperature T1 in table 1, it can be by linear Interpolation is calculated to obtain the target inlet Tco of evaporator.
In addition, the target inlet of evaporator can also be calculated by following formula:
Tco=0.475*T1+0.479*T4-1.66
According to one embodiment of present invention, according to the target inlet of evaporator, the aperture of electric expansion valve is adjusted, Further include:Obtain the practical inlet temperature at evaporator current time;According to practical inlet temperature and target inlet, electricity is determined The target aperture of sub- expansion valve;Electric expansion valve is adjusted according to target aperture.
Specifically, according to practical inlet temperature and target inlet, the target aperture of electric expansion valve is determined, including: According to practical inlet temperature Tc and target inlet Tco, the first inlet temperature difference T, i.e. T=Tc- of evaporator is determined Tco;According to the practical inlet temperature Tc at evaporator current timenWith the practical inlet temperature Tc of evaporator last momentn-1, really Determine the second inlet temperature difference Δ Tc, i.e. Δ Tc=Tc of evaporatorn-Tcn-1;According to the first inlet temperature difference T and second into Mouth temperature gap Δ Tc, determines the target aperture of electric expansion valve.
Further, it is determined that the target aperture of electric expansion valve, further includes:According to the first inlet temperature difference T and second Inlet temperature difference Δ Tc determines that the target at electronic expansion valve opening current time adjusts correction value Δ Li;Target adjusting is repaiied Positive value delta Li is multiplied with correction factor β, and is added with the current aperture L of electric expansion valve, obtains target aperture Lo.
Wherein, it can be inquired by table 2 and obtain target adjusting correction value Δ Li.
Table 2
Further, before target adjusting correction value Δ Li being multiplied with correction factor β, further include:By the first import temperature Spend the absolute value of difference T and preset threshold value comparison;If absolute value is more than or equal to preset threshold value, it is determined that correct system Number β is the first preset value;If absolute value is less than preset threshold value, it is determined that correction factor β is the second preset value.
Wherein, preset threshold value is 6, and correction factor β is that the first preset value is 25, and correction factor β is that the second preset value is 15, that is, when | T |=| Tc-Tco | when >=6, β=25;When | T |=| Tc-Tco | when < 6, β=15.
Specifically, obtain current outdoor temperature T4 and indoor temperature T1, by table look-up or formula calculate obtain evaporator Target inlet Tco, then obtain evaporator currently practical inlet temperature and last moment inlet temperature, wherein on One moment can be as unit of control time TM, 180s≤TM≤210s, at this point, find out the first inlet temperature difference T and second into Then mouth temperature gap Δ Tc tables look-up and obtains target adjusting correction value Δ Li, determine that amendment is according to the first inlet temperature difference T Then target adjusting correction value Δ Li is multiplied with correction factor β, then is added with the aperture of Current electronic expansion valve by number β, to obtain The aperture of target electronic expansion valve, i.e. Lo=L+ Δs Li × β are taken, electric expansion valve is adjusted according to target aperture Lo.
According to one embodiment of present invention, when outdoor temperature T4 is far above indoor temperature T1, since outdoor is to interior Heat transfer, therefore, the difference of the target inlet of indoor temperature T1 and evaporator is also bigger, therefore, when outdoor temperature T4 is small In or equal to indoor temperature T1 when, keep evaporator target inlet be outdoor temperature T4, to as possible reduce refrigerant from The cold of outdoor absorption.
For example, when air-conditioning preset temperature is 28 DEG C, for a period of time, compressor frequency has been lowered to most operation of air conditioner Low running frequency, the current practical import aperture L of electric expansion valve are 100, and current indoor temperature T1 is 26 DEG C, outdoor temperature T4 It it is 29 DEG C, then the target inlet Tco of evaporator is 24.5 DEG C, practical inlet temperature Tc of the detection when front evaporatornIt is 18 DEG C, the practical inlet temperature Tc of last momentn-1Be 19 DEG C, then T=Tc-Tco=6.5 DEG C, Δ Tc=Tcn-Tcn-1=1 DEG C, then Electronic expansion valve opening adjusts correction value Δ Li=5, then target aperture should be:Lo=L+ △ Li × β=100+5 × 25=225, Unit is step.
According to one embodiment of present invention, after the aperture for adjusting electric expansion valve, further include:Air-conditioning is persistently obtained to work as The running frequency at preceding moment and the target operating frequency at current time;If the running frequency at current time is minimum operation frequency, And the target operating frequency at current time is less than minimum operating frequency, then persistently adjusts the aperture of electric expansion valve;If current The running frequency at moment is more than minimum operating frequency or the target frequency at current time is greater than or equal to minimum operating frequency, Then control the initial opening that air-conditioning restores electric expansion valve.
That is, adjustment electric expansion valve aperture after, persistently obtain air-conditioning current time running frequency and The target operating frequency at current time, if the running frequency at current time is minimum operating frequency, and the target at current time Running frequency is less than minimum operating frequency, then the aperture of electric expansion valve is persistently adjusted, if the running frequency at current time is big It is greater than or equal to minimum operating frequency in the target frequency at minimum operating frequency or current time, then controls air-conditioning and restore electricity The initial opening of sub- expansion valve, is recycled with this, and straight air-conditioning restores the initial opening of electric expansion valve.
A specific embodiment according to the present invention, as shown in Fig. 2, the control method of the air-conditioning of the present invention, including it is following Step:
S201:Air-conditioning booting operation.
S202:Control operation of air conditioner normal refrigerating mode.
S203:Obtain the current operation frequency of air-conditioning.
S204:Judge whether current operation frequency is minimum operating frequency.
If so, thening follow the steps S205;If it is not, then return to step S202.
S205:Obtain current indoor temperature and indoor preset temperature.
S206:Judge whether indoor temperature is less than indoor preset temperature.
If so, thening follow the steps S207;If it is not, then return to step S205.
S207:The target inlet of evaporator is determined according to indoor temperature and outdoor temperature.
S208:Electric expansion valve is adjusted according to the target inlet of evaporator.
Technical solution in above-mentioned the embodiment of the present application, at least has the following technical effect that or advantage:Due in air-conditioning Running frequency when reaching minimum operating frequency and indoor temperature and being less than indoor preset temperature, according to the target inlet of evaporator Temperature adjusts the aperture of electric expansion valve, so, output refrigeration when efficiently solving air-conditioning low-limit frequency operation in the prior art Amount is more than the technical issues of indoor actual demand cold, effectively increases indoor temperature thermal comfort, air-conditioning is avoided to open repeatedly Stop.Meanwhile according to current outdoor temperature and indoor temperature, the accurate target inlet for determining evaporator, and then realize root The aperture that electric expansion valve is adjusted according to the target inlet of evaporator, to make the practical inlet temperature of evaporator be equal to target Inlet temperature reduces the cold of indoor unit.
Based on same inventive concept, the embodiment of the present invention additionally provides the corresponding system of method in embodiment one, sees implementation Example two.
Embodiment two
Fig. 3 is the block diagram of the control device of the air-conditioning of the embodiment of the present invention.As shown in figure 3, the embodiment of the present invention Air-conditioning control device 100, including:Identification module 10, the first acquisition module 20, the second acquisition module 30, third obtain mould Block 40 and control module 50.
Wherein, air-conditioning inner compressor is run identification module 10 according to minimum operating frequency for identification;First acquisition module 20 target operating frequency for obtaining air-conditioning current time;Second acquisition module 30 is for obtaining indoor temperature;Third obtains Module 40 is used to, when real-time indoor temperature is less than preset temperature, obtain outdoor temperature;4th acquisition module 50 is used for according to room Outer temperature and indoor temperature obtain the target inlet of evaporator;Control module 60 is used for the target inlet temperature according to evaporator Degree, adjusts the aperture of electric expansion valve.
Further, identification module 10 is additionally operable to:The running frequency for obtaining compressor current time, by the fortune at current time Line frequency is compared with minimum operating frequency, if the running frequency at current time is consistent with minimum operating frequency, it is determined that Compressor is run according to minimum operating frequency.
Further, control module 50 is additionally operable to:Obtain the practical inlet temperature at evaporator current time;According to reality into Mouth temperature and target inlet, determine the target aperture of electric expansion valve;Electric expansion valve is adjusted according to target aperture It is whole.
Further, control module 50 is additionally operable to:According to practical inlet temperature and target inlet, evaporator is determined First inlet temperature difference;According to the practical import temperature of the practical inlet temperature at evaporator current time and evaporator last moment Degree, determines the second inlet temperature difference of evaporator;According to the first inlet temperature difference and the second inlet temperature difference, electricity is determined The target aperture of sub- expansion valve.
Further, control module 50 is additionally operable to:According to the first inlet temperature difference and the second inlet temperature difference, determine The target at electronic expansion valve opening current time adjusts correction value;By target adjusting correction value be multiplied with correction factor, and with electricity The current aperture of sub- expansion valve is added, and obtains target aperture.
Further, control module 50 is additionally operable to:By the absolute value of the first inlet temperature difference and preset threshold value comparison; If absolute value is more than or equal to preset threshold value, it is determined that correction factor is the first preset value;If absolute value is less than pre- If threshold value, it is determined that correction factor be the second preset value.
Further, control module 50 is additionally operable to:Persistently obtain running frequency and the current time at air-conditioning current time Target operating frequency;If the running frequency at current time is minimum operating frequency, and the target operating frequency at current time is small In minimum operating frequency, then the aperture of electric expansion valve is persistently adjusted;If the running frequency at current time is more than minimum operation The target frequency at frequency or current time is greater than or equal to minimum operating frequency, then controls air-conditioning and restore electric expansion valve Initial opening.
Technical solution in above-mentioned the embodiment of the present application, at least has the following technical effect that or advantage:Due in air-conditioning Running frequency when reaching minimum operating frequency and indoor temperature and being less than indoor preset temperature, according to the target inlet of evaporator Temperature adjusts the aperture of electric expansion valve, so, output refrigeration when efficiently solving air-conditioning low-limit frequency operation in the prior art Amount is more than the technical issues of indoor actual demand cold, effectively increases indoor temperature thermal comfort, air-conditioning is avoided to open repeatedly Stop.Meanwhile according to current outdoor temperature and indoor temperature, the accurate target inlet for determining evaporator, and then realize root The aperture that electric expansion valve is adjusted according to the target inlet of evaporator, to make the practical inlet temperature of evaporator be equal to target Inlet temperature reduces the cold of indoor unit.
By the system that the embodiment of the present invention two is introduced, it is used by the method to implement the embodiment of the present invention one System, so based on the method that the embodiment of the present invention one is introduced, the affiliated personnel in this field can understand the concrete structure of the system And deformation, so details are not described herein.System used by the method for every embodiment of the present invention one belongs to the present invention and is intended to The range of protection.
In order to achieve the above objectives, the invention also provides a kind of air-conditionings, as shown in figure 4, air-conditioning 200 includes the control of air-conditioning Device 100.
In order to achieve the above objectives, the invention also provides a kind of computer readable storage medium, it is stored thereon with air-conditioning Program is controlled, which realizes the control method of air-conditioning above-mentioned when being executed by processor.
In order to achieve the above objectives, the invention also provides a kind of equipment, including memory, processor and it is stored in memory The control program of air-conditioning that is upper and can running on a processor, when the processor executes the control program of the air-conditioning before realization The control method for the air-conditioning stated.
It should be understood by those skilled in the art that, the embodiment of the present invention can be provided as method, system or computer program Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention Apply the form of example.Moreover, the present invention can be used in one or more wherein include computer usable program code computer The computer program production implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) The form of product.
The present invention be with reference to according to the method for the embodiment of the present invention, the flow of equipment (system) and computer program product Figure and/or block diagram describe.It should be understood that can be realized by computer program instructions every first-class in flowchart and/or the block diagram The combination of flow and/or box in journey and/or box and flowchart and/or the block diagram.These computer programs can be provided Instruct the processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce A raw machine so that the instruction executed by computer or the processor of other programmable data processing devices is generated for real The device for the function of being specified in present one flow of flow chart or one box of multiple flows and/or block diagram or multiple boxes.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works so that instruction generation stored in the computer readable memory includes referring to Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device so that count Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, in computer or The instruction executed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one The step of function of being specified in a box or multiple boxes.
It should be noted that in the claims, any reference mark between bracket should not be configured to power The limitation that profit requires.Word "comprising" does not exclude the presence of component not listed in the claims or step.Before component Word "a" or "an" does not exclude the presence of multiple such components.The present invention can be by means of including several different components It hardware and is realized by means of properly programmed computer.In the unit claims listing several devices, these are filled Several in setting can be embodied by the same hardware branch.The use of word first, second, and third is not Indicate any sequence.These words can be construed to title.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to include these modifications and variations.

Claims (17)

1. a kind of control method of air-conditioning, which is characterized in that the air-conditioning is run in cooling mode, and the method includes following Step:
Identify that the air-conditioning inner compressor is run according to minimum operating frequency;
Obtain indoor temperature and indoor preset temperature;
If the indoor temperature is less than the preset temperature, outdoor temperature is obtained;
The target inlet of evaporator is obtained according to the outdoor temperature and the indoor temperature;
According to the target inlet of the evaporator, the aperture of electric expansion valve is adjusted.
2. the control method of air-conditioning according to claim 1, which is characterized in that the identification air-conditioning inner compressor is pressed It is run according to minimum operating frequency, including:
The running frequency for obtaining the compressor current time, by the running frequency at current time and the minimum operating frequency into Row compares, if the running frequency at current time is consistent with the minimum operating frequency, it is determined that the compressor is according to described Minimum operating frequency is run.
3. the control method of air-conditioning according to claim 1, which is characterized in that according to the target inlet temperature of the evaporator Degree, adjusts the aperture of electric expansion valve, further includes:
Obtain the practical inlet temperature at the evaporator current time;
According to the practical inlet temperature and the target inlet, the target aperture of the electric expansion valve is determined;
The electric expansion valve is adjusted according to the target aperture.
4. the control method of air-conditioning according to claim 3, which is characterized in that it is described according to the practical inlet temperature and The target inlet determines the target aperture of the electric expansion valve, including:
According to the practical inlet temperature and the target inlet, the first inlet temperature difference of the evaporator is determined;
According to the practical inlet temperature of the practical inlet temperature at the evaporator current time and the evaporator last moment, really Second inlet temperature difference of the fixed evaporator;
According to the first inlet temperature difference and the second inlet temperature difference, determine that the target of the electric expansion valve is opened Degree.
5. the control method of air-conditioning according to claim 4, which is characterized in that determine that the target of the electric expansion valve is opened It spends, further includes:
According to the first inlet temperature difference and the second inlet temperature difference, determine that the electronic expansion valve opening is current The target at moment adjusts correction value;
Target adjusting correction value is multiplied with correction factor, and is added with the current aperture of the electric expansion valve, is obtained The target aperture.
6. the control method of air-conditioning according to claim 4, which is characterized in that it is described by the target adjust correction value with Before correction factor is multiplied, further include:
By the absolute value of the first inlet temperature difference and preset threshold value comparison;
If the absolute value is more than or equal to the preset threshold value, it is determined that the correction factor is the first preset value;
If the absolute value is less than the preset threshold value, it is determined that the correction factor is the second preset value.
7. the control method of air-conditioning according to claim 1, which is characterized in that it is described adjustment electric expansion valve aperture it Afterwards, further include:
Persistently obtain the target operating frequency of the running frequency and current time at the air-conditioning current time;
If the running frequency at current time is minimum operation frequency, and the target operating frequency at current time is less than minimum fortune Line frequency then persistently adjusts the aperture of the electric expansion valve;
If the running frequency at current time is more than the minimum operating frequency or the target frequency at current time is more than or waits In the minimum operating frequency, then the initial opening that air-conditioning restores the electric expansion valve is controlled.
8. a kind of control device of air-conditioning, which is characterized in that the air-conditioning is run in cooling mode, and described device includes:
Identification module, for identification the air-conditioning inner compressor run according to minimum operating frequency;
First acquisition module, for obtaining indoor temperature and indoor preset temperature;
Second acquisition module, for when real-time indoor temperature is less than the preset temperature, obtaining outdoor temperature;
Third acquisition module, the target inlet for obtaining evaporator according to the outdoor temperature and the indoor temperature;
Control module adjusts the aperture of electric expansion valve for the target inlet according to the evaporator.
9. the control device of air-conditioning according to claim 8, which is characterized in that the identification module is additionally operable to:
The running frequency for obtaining the compressor current time, by the running frequency at current time and the minimum operating frequency into Row compares, if the running frequency at current time is consistent with the minimum operating frequency, it is determined that the compressor is according to described Minimum operating frequency is run.
10. the control device of air-conditioning according to claim 8, which is characterized in that the control module is additionally operable to:
Obtain the practical inlet temperature at the evaporator current time;
According to the practical inlet temperature and the target inlet, the target aperture of the electric expansion valve is determined;
The electric expansion valve is adjusted according to the target aperture.
11. the control device of air-conditioning according to claim 10, which is characterized in that the control module is additionally operable to:
According to the practical inlet temperature and the target inlet, the first inlet temperature difference of the evaporator is determined;
According to the practical inlet temperature of the practical inlet temperature at the evaporator current time and the evaporator last moment, really Second inlet temperature difference of the fixed evaporator;
According to the first inlet temperature difference and the second inlet temperature difference, determine that the target of the electric expansion valve is opened Degree.
12. the control device of air-conditioning according to claim 11, which is characterized in that the control module is additionally operable to:
According to the first inlet temperature difference and the second inlet temperature difference, determine that the electronic expansion valve opening is current The target at moment adjusts correction value;
Target adjusting correction value is multiplied with correction factor, and is added with the current aperture of the electric expansion valve, is obtained The target aperture.
13. the control device of air-conditioning according to claim 11, which is characterized in that the control module is additionally operable to:
By the absolute value of the first inlet temperature difference and preset threshold value comparison;
If the absolute value is more than or equal to the preset threshold value, it is determined that the correction factor is the first preset value;
If the absolute value is less than the preset threshold value, it is determined that the correction factor is the second preset value.
14. the control device of air-conditioning according to claim 8, which is characterized in that the control module is additionally operable to:
Persistently obtain the target operating frequency of the running frequency and current time at the air-conditioning current time;
If the running frequency at current time is the minimum operating frequency, and the target operating frequency at current time is less than minimum Running frequency then persistently adjusts the aperture of the electric expansion valve;
If the running frequency at current time is more than the minimum operating frequency or the target frequency at current time is more than or waits In the minimum operating frequency, then the initial opening that air-conditioning restores the electric expansion valve is controlled.
15. a kind of computer readable storage medium, which is characterized in that be stored thereon with the control program of air-conditioning, which is characterized in that The control method of any air-conditionings of claim 1-7 is realized when the program is executed by processor.
16. a kind of equipment, which is characterized in that including memory, processor and store on a memory and can transport on a processor The control program of capable air-conditioning, the processor realize that claim 1-7 is any described when executing the control program of the air-conditioning Air-conditioning control method.
17. a kind of air-conditioning, which is characterized in that include the control device of the air-conditioning as described in claim 8-14 is any.
CN201810629106.6A 2018-06-19 2018-06-19 Control method and device of air conditioner Active CN108518821B (en)

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