CN107166643A - A kind of control method and device of air-conditioning - Google Patents
A kind of control method and device of air-conditioning Download PDFInfo
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- CN107166643A CN107166643A CN201710348657.0A CN201710348657A CN107166643A CN 107166643 A CN107166643 A CN 107166643A CN 201710348657 A CN201710348657 A CN 201710348657A CN 107166643 A CN107166643 A CN 107166643A
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- Prior art keywords
- refrigerant
- air
- control
- conditioning
- heat exchanger
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/43—Defrosting; Preventing freezing of indoor units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/10—Pressure
- F24F2140/12—Heat-exchange fluid pressure
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of control method and device of air-conditioning, belong to air-conditioning technical field.Control method includes：The frosting situation of indoor set when determining operation of air conditioner refrigeration mode；During indoor set frosting in cooling mode, control blocks the refrigerant pipeline for flowing to indoor set.The control method of air-conditioning of the present invention is by controlling the refrigerant pipeline for blocking flow direction the heat exchanger of frosting problem occur; it can stop continuing to input low temperature refrigerant to the heat exchanger of frosting; and then the further exacerbation of frosting problem can be avoided; and nature defrost ice-melt can be carried out using the temperature heat exchanging device of heat exchanger local environment, to realize the freeze protection effect to the heat exchanger of air conditioner.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly to a kind of control method and device of air-conditioning.
Background technology
Existing air-conditioning products in the process of running, the indoor set and outdoor unit of air-conditioning under different working conditions often
There is frozen problem.For example, air-conditioning is in summer operation refrigeration mode, in the cryogenic temperature and the actual environment of indoor and outdoor of setting
In the case of temperature is too low, and inner blower rotating speed is less, inner coil pipe temperature can be caused too low so that the indoor heat exchange of indoor set
The freezeout of icing frosting occurs in device；Or, when air-conditioning runs heating mode in the winter time, temperature and room are heated in setting
In the case that inside and outside actual environment temperature is relatively low, the outer coil pipe temperature of itself also can be too low, causes the outdoor heat exchange of outdoor unit
Also there is the freezeout of icing frosting in device.The frozen problem of outdoor heat exchanger and indoor heat exchanger can influence the normal of heat exchanger
Heat exchange works, and can shorten the service life of heat exchanger.
Therefore, freeze protection function is added in air-conditioning products in order to reduce the appearance of frozen problem in the prior art,
The protection philosophy of existing freeze protection function is freezeout occur in the indoor heat exchanger or indoor heat exchanger of air-conditioning mostly
The operation of compressor is off, compressor is restarted again after freezeout disappears, but this mode can cause compressor
Frequent start-stop, not only consume energy serious but also influence press service life.
The content of the invention
The invention provides a kind of control method and device of air-conditioning, it is intended to solves the frozen problem of air-conditioning heat exchanger.For
There is a basic understanding to some aspects of the embodiment of disclosure, shown below is simple summary.The summarized section is not
It is extensive overview, nor to determine key/critical component or describe the protection domain of these embodiments.Its sole purpose
It is that some concepts are presented with simple form, in this, as the preamble of following detailed description.
According to the first aspect of the invention there is provided a kind of control method of air-conditioning, including：Determine that operation of air conditioner freezes
The frosting situation of indoor set during pattern；During indoor set frosting in cooling mode, control blocks the refrigerant for flowing to indoor set
Pipeline.
Further, control blocks the refrigerant pipeline for flowing to indoor set to include：The interior for being connected to indoor set is closed in control
The first magnetic valve on refrigerant pipeline between heat exchanger and choke valve.
Further, control method also includes：Obtain the first refrigerant pressure of the neighbouring choke valve side of the first magnetic valve；
When the first refrigerant pressure is more than or equal to the first preset refrigerant pressure threshold value, the first magnetic valve is opened in control.
Further, control method also includes：Obtain the first duration that refrigerant pipeline is blocked；It is more than or waits in the first duration
When the first preset setting duration, control conducting refrigerant pipeline, wherein, first sets frequency of the duration according to the compressor of air-conditioning
Rate is determined.
Further, the first setting duration is determined according to the frequency of the compressor of air-conditioning, including：Obtain the compressor of air-conditioning
Current frequency；According to the frequency of preset compressor and the corresponding relation of the first setting duration, determine corresponding to current frequency
First setting duration.
According to the second aspect of the invention, a kind of control method of air-conditioning is additionally provided, including：The operation of air conditioner system of determination
The frosting situation of outdoor unit during heat pattern；During outdoor unit frosting in a heating mode, control blocks and flows to the cold of outdoor unit
Matchmaker's pipeline.
Further, control blocks the refrigerant pipeline for flowing to outdoor unit to include：The outdoor for being connected to outdoor unit is closed in control
The second magnetic valve on refrigerant pipeline between heat exchanger and choke valve.
Further, control method also includes：Obtain the second refrigerant pressure of the neighbouring choke valve side of the second magnetic valve；
When refrigerant pressure is more than or equal to the second preset refrigerant pressure threshold value, the second magnetic valve is opened in control.
Further, control method also includes：Obtain the second duration that refrigerant pipeline is blocked；It is more than or waits in the second duration
When the second preset setting duration, control conducting refrigerant pipeline, wherein, second sets compressor of the duration according to the air-conditioning
Frequency determine.
Further, setting duration is determined according to the frequency of the compressor of air-conditioning, including：Obtain air-conditioning compressor work as
Preceding frequency；According to the frequency of preset compressor and the corresponding relation of the second setting duration, the corresponding to current frequency is determined
Two setting durations.
According to the third aspect of the present invention, a kind of control device of air-conditioning is additionally provided, control device includes：It is determined that single
Member, the frosting situation for determining indoor set during operation of air conditioner refrigeration mode；Control unit, for room in cooling mode
During interior machine frosting, control blocks the refrigerant pipeline for flowing to indoor set.
According to the fourth aspect of the present invention, a kind of control device of air-conditioning is additionally provided, control device includes：It is determined that single
Member, the frosting situation for determining outdoor unit during operation of air conditioner heating mode；Control unit, for room in a heating mode
During outer machine frosting, control blocks the refrigerant pipeline for flowing to outdoor unit.
The control method of air-conditioning of the present invention, can by controlling the refrigerant pipeline for blocking flow direction the heat exchanger of frosting problem occur
Continue to input low temperature refrigerant with the heat exchanger stopped to frosting, and then the further exacerbation of frosting problem can be avoided, and can
To carry out nature defrost ice-melt using the temperature heat exchanging device of heat exchanger local environment, to realize the jelly to the heat exchanger of air conditioner
Tie protective effect.
It should be appreciated that the general description of the above and detailed description hereinafter are only exemplary and explanatory, not
Can the limitation present invention.
Brief description of the drawings
Accompanying drawing herein is merged in specification and constitutes the part of this specification, shows the implementation for meeting the present invention
Example, and for explaining principle of the invention together with specification.
Fig. 1 is the structural representation one of the air-conditioning of the present invention according to shown by an exemplary embodiment.
Fig. 2 is the structural representation two of the air-conditioning of the present invention according to shown by an exemplary embodiment.
Fig. 3 is the flow chart one of the control method of the air-conditioning of the present invention according to shown by an exemplary embodiment；
Fig. 4 is the flowchart 2 of the control method of the air-conditioning of the present invention according to shown by an exemplary embodiment.
Wherein, 1, indoor heat exchanger；2nd, outdoor heat exchanger；3rd, compressor；4th, choke valve；51st, the first magnetic valve；52nd,
Two magnetic valves.
Embodiment
The following description and drawings fully show specific embodiments of the present invention, to enable those skilled in the art to
Put into practice them.Other embodiments can include structure, logic, electric, process and other changes.Embodiment
Only represent possible change.Unless explicitly requested, otherwise single components and functionality is optional, and the order operated can be with
Change.The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.This hair
The scope of bright embodiment includes the gamut of claims, and claims is all obtainable equivalent
Thing.Herein, each embodiment individually or can be represented generally with term " invention ", and it is convenient that this is used for the purpose of,
And if in fact disclosing the invention more than one, the scope for being not meant to automatically limit the application is any single invention
Or inventive concept.Herein, such as first and second or the like relational terms be used only for by an entity or operation with
Another entity or operation make a distinction, without requiring or implying between these entities or operation there is any actual relation
Or order.Moreover, term " comprising ", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that
So that process, method or equipment including a series of key elements not only include those key elements, but also including being not expressly set out
Other key elements, or also include for this process, method or the intrinsic key element of equipment.In the feelings of not more limitations
Under condition, the key element limited by sentence "including a ...", it is not excluded that in the process including the key element, method or equipment
In also there is other identical element.Each embodiment herein is described by the way of progressive, and each embodiment is stressed
Be all between difference with other embodiment, each embodiment identical similar portion mutually referring to.For implementing
For example disclosed method, product etc., because it is corresponding with method part disclosed in embodiment, so the comparison of description is simple
Single, related part is referring to method part illustration.
Fig. 1 and Fig. 2 individually disclose the air conditioning structure diagram in not be the same as Example.
In embodiment, air-conditioning is generally comprised including indoor set and outdoor unit, and it is specific be provided with compressor 3, four-way valve,
The functional parts such as choke valve 4, indoor heat exchanger 1 and outdoor heat exchanger 2, compressor 3, four-way valve, choke valve 4, outdoor heat exchanger 2
Refrigerant circulation circuit is connected and composed by refrigerant pipeline with indoor heat exchanger 1；Refrigerant is by refrigerant circulation circuit along different operations
Flow direction flowing set by pattern, realizes that it heats and freezed etc. function.
In embodiment, the operational mode of air-conditioning includes refrigeration mode and heating mode, wherein, refrigeration mode operation when institute
The high temperature refrigerant that the refrigerant flow direction of setting refers to the discharge of compressor 3 first flows through outdoor heat exchanger 2 and outdoor environment heat exchange, afterwards in stream
Enter indoor heat exchanger 1 to be exchanged heat with indoor environment, last refrigerant return to compressor 3 re-starts squeeze operation；This mistake
Cheng Zhong, flows through the refrigerant of outdoor heat exchanger 2 and releases heat to outdoor environment, flows through the refrigerant of indoor heat exchanger 1 from indoor environment
Middle absorption heat, by refrigerant circulating in refrigerant circulation circuit, what can be continued is discharged to room by indoor heat
In external environment, so as to reach the refrigeration purpose of reduction indoor environment temperature.
And the high temperature refrigerant that set refrigerant flow direction refers to the discharge of compressor 3 when heating mode is run first flows through interior and changed
Hot device 1 exchanges heat with outdoor environment, is exchanged heat afterwards in inflow outdoor heat exchanger 2 with indoor environment, last refrigerant return to pressure
Contracting machine 3 re-starts squeeze operation；During this, the refrigerant for flowing through indoor heat exchanger 1 releases heat to indoor environment, flows through
The refrigerant of outdoor heat exchanger 2 absorbs heat from outdoor environment, by refrigerant circulating in refrigerant circulation circuit, can be with
It is lasting that outdoor heat is discharged into indoor environment, so as to reach that improves indoor environment temperature heats purpose.
Therefore, air-conditioning in a chiller mode when, the refrigerant temperature for inputting indoor heat exchanger 1 is relatively low, indoor heat exchanger 1 it is outer
Surface and inner coil pipe are influenceed by the temperature of low temperature refrigerant, and the temperature of the outer surface of indoor heat exchanger 1 and inner coil pipe is relatively low, this
In the case of, steam in indoor environment can condense into frost on the outer surface of heat exchanger 1 and inner coil pipe indoors or condense into ice sheet, no
The heat exchange between the refrigerant and external environment condition of flowing in indoor heat exchanger 1 can be only obstructed, and easily causes the freezing damage of inner coil pipe.
In order to prevent air-conditioning run refrigeration mode when indoor set there is freezing damage the problem of, the invention provides one kind in summer system
The control method of anti-freeze under cold operating mode.
Fig. 3 is control flow chart of the air-conditioning of the present invention under cooling in summer operating mode in an embodiment.
The control method of anti-freeze of the present invention under summer heating condition, including：
S301, indoor set when determining operation of air conditioner refrigeration mode frosting situation.
General in embodiment, the frosting of indoor set is that occur in summer condition, and air-conditioning is to reduce indoor environment mostly
The refrigeration mode operation of temperature, now, in indoor heat exchanger is filled with substantial amounts of low temperature refrigerant, the cryogenic temperature set in user
It is relatively low, and indoor and outdoor actual environment temperature it is relatively low in the case of, the heat exchange amount of refrigerant and indoor environment is less, indoor heat exchange
The outer surface of device and inner coil pipe temperature can also be in relatively low temperature levels, therefore, the easy surface of heat exchanger indoors of steam
With the frost layer that congealed into ice on inner coil pipe.So, can be by detecting that the frosting situation of indoor set judges whether to need progress antifreeze
Knot protection control.
In embodiment, the frosting state of indoor set can detect institute on indoor set outer surface or inner coil pipe by sensor
The ice frost thickness of condensation determines, the ice frost thickness condensed indoors on machine outer surface or inner coil pipe reaches the thickness of setting
When, then meet the condition that needs carry out defrost.
For example, the ice frost thickness that air-conditioning is set is 10mm, the frost of default test point on sensor detection inner coil pipe
Thickness degree, if the ice frost thickness of test point is more than or equal to 10mm, can determine that the inner coil pipe of indoor set has reached needs
The condition of defrost is wanted, ice frost thickness has influenced whether that the normal of air-conditioning is used, it is therefore desirable to carry out defrost to indoor set；If
The ice frost thickness of test point is less than
10mm, then can determine the inner coil pipe of indoor set also not up to needs the condition of defrost, and ice frost thickness is to air-conditioning
It is normal smaller using influenceing, carry out defrost also without to indoor set.
In another embodiment, can also be by detecting that indoor set outer surface or inner coil pipe temperature judge the bottom of indoor set
The frosting state of disk, specifically, the actual temperature of indoor set outer surface or inner coil pipe can be detected by temperature sensor, and
It is compared with preset frosting temperature, if currently detected indoor set outer surface or the actual temperature of inner coil pipe are not more than
During preset frosting temperature, then the problem of chassis of outdoor unit is likely to occur frost layer condensation is can determine that.
For example, the frosting temperature of the preset indoor set of air-conditioning is 0 DEG C, temperature sensor detection indoor set coil pipe works as shroud
Pipe temperature, if current coil temperature is less than or equal to 0 DEG C, can determine that the coil pipe of indoor set has reached needs the bar of defrost
Part, the frost layer of condensation may influence whether that the normal of air-conditioning is used, it is therefore desirable to carry out defrost to indoor set；If current coil pipe
Temperature is more than 0 DEG C, then can determine that the steam of indoor environment also not up to coagulates the condition of frost, the inner disc of indoor set on inner coil pipe
Non-condensing frost or the frost amount of condensation are less on pipe, and defrost is carried out also without to indoor set.
When S302, indoor set frosting in cooling mode, control blocks the refrigerant pipeline for flowing to indoor set.
During machine frosting indoors, then it can determine that meet the condition for carrying out defrost freezes, it is necessary to carry out defrost to indoor set
Protection control, control blocks the refrigerant pipeline for flowing to indoor set, continues to input in indoor set to stop low temperature refrigerant, so, can
Continue to influence outer surface and inner coil pipe temperature, the temperature by indoor set of indoor set with the temperature for avoiding the low temperature refrigerant newly inputted
The even lower temperature of frosting temperature is maintained, prevents frozen problem from further aggravating.
The refrigerant pipeline of the loss indoor set blocked in embodiment connects side by the arrival end of indoor heat exchanger
Refrigerant pipeline, so, can directly stop input of the low temperature refrigerant to indoor heat exchanger；Meanwhile, block refrigerant pipeline it
The preceding part low temperature refrigerant for having inputted indoor heat exchanger can flow out from the port of export and continue to flow back into along refrigerant circulation circuit
In compressor, so as to gradually decrease the low temperature refrigerant amount that frozen problem is caused to indoor heat exchanger, meanwhile, persist indoors
Heat exchanger section low temperature refrigerant can continue to carry out heat exchange with indoor environment, because indoor environment temperature is above interior all the time
Refrigerant temperature in heat exchanger, therefore, in heat exchange during, low temperature refrigerant absorbs external environment heat and temperature liter
Height, the outer surface of indoor heat exchanger and inner coil pipe temperature are also raised in the lump, indoors the hull-skin temperature and inner coil pipe of heat exchanger
When temperature is higher than frosting temperature, the frost layer condensed on outer surface and inner coil pipe can gradually be melted into water, in this manner it is possible to real
Now the anti-freeze to indoor set is protected.
In embodiment, the arrival end of indoor heat exchanger is connected successively with choke valve and outdoor heat exchanger by refrigerant pipeline
Logical, therefore, when choke valve is closed, the refrigerant flow between indoor heat exchanger and outdoor heat exchanger is to be in blocking state, room
The refrigerant that external heat exchanger can not continue to be limited according to refrigeration mode is flowed to indoor heat exchanger input refrigerant.Therefore, step
Control blocks the one of which implementation for the refrigerant pipeline for flowing to indoor set to be exactly to close choke valve in S302, to cut off refrigerant
To the transport path of indoor heat exchanger, and then realize the anti-freeze protection to indoor heat exchanger.
And in the air conditioner structure shown in Fig. 1 embodiments, between the refrigerant inlet end of indoor heat exchanger 1 and choke valve 4 also
The first magnetic valve 51 is separately provided with, conducting or resistance available for the refrigerant pipeline between control indoor heat exchanger 1 and choke valve 4
It is disconnected.Specifically, when the first magnetic valve is in opening, the refrigerant pipeline between indoor heat exchanger and choke valve is on
State, refrigerant can flow into indoor heat exchanger along refrigerant pipeline；And when the first magnetic valve is closed, indoor heat exchanger
Refrigerant pipeline between choke valve is in opening, and refrigerant can not continue to flow into indoor heat exchanger along refrigerant pipeline.So,
Control blocks another implementation for the refrigerant pipeline for flowing to indoor set to be exactly that the first electromagnetism is closed in control in step S302
Valve, can equally play cut-out transport path of the refrigerant to indoor heat exchanger, and then realize the anti-freeze guarantor to indoor heat exchanger
The purpose of shield.
Control method of the present invention is in the break-make control process of refrigerant pipeline, and compressor is to be in opening, and refrigerant exists
It can still be moved under the activation force of compressor along refrigerant circulation circuit, because refrigerant circulation circuit is with one in refrigeration mode
Single flow direction conveying, therefore after step S302 is blocked and flowed to the refrigerant pipeline of indoor set, refrigerant can be gradually accumulated in refrigerant pipe
The refrigerant input side of road blocking position, causes the refrigerant pressure of the side position gradually to increase, for example, in the embodiment in figure 1,
After closed electromagnetic valve, the neighbouring choke valve side of magnetic valve is foregoing refrigerant input side, the refrigerant of exhaust outlet of compressor discharge
Via the input side that magnetic valve is blocked on after four-way valve and outdoor heat exchanger so that the side refrigerant pressure increase.In magnetic valve
Input side accumulation refrigerant it is excessive, when cooling medium liquid presses through big, be likely to result in that refrigerant pipeline bursts, magnetic valve is damaged asks
Topic, therefore, blocks the time of refrigerant pipeline can not be long, it is necessary to which the in good time refrigerant pipeline of conducting again is let out in step S302
Press operation, to avoid local cooling medium liquid from pressing through greatly.
In embodiment, control turns on the refrigerant that refrigerant pipeline is the refrigerant input side according to refrigerant pipeline blocking position again
Pressure is determined, specifically, the pressure release control process for the air conditioner structure shown in Fig. 1 includes：Obtain the neighbouring throttling of magnetic valve
First refrigerant pressure of valve side；When the first refrigerant pressure is more than or equal to the first preset refrigerant pressure threshold value, control is opened
Open the first magnetic valve.
First refrigerant pressure threshold value is the safety critical pressure value of refrigerant pipeline, and the refrigerant pressure in refrigerant pipeline is higher than
During the first refrigerant pressure threshold value, it is possible that refrigerant pipeline bursts, magnetic valve because the high hydraulic pressure of refrigerant damage the problem of；And cold
When refrigerant pressure in matchmaker's pipeline is less than the second refrigerant pressure threshold value, then occur that refrigerant pipeline bursts, magnetic valve is because of the high liquid of refrigerant
The bad possibility of crushing is smaller.Therefore, control method of the present invention is by the pressure position of the refrigerant input side of magnetic valve
Under one refrigerant pressure threshold value, to ensure safety and stability of the air-conditioning in anti-freeze protects flowchart process.
For the air-conditioning of the foregoing direct break-make control that refrigerant pipeline is realized by choke valve, the first acquired refrigerant
Pressure is then the refrigerant pressure of the neighbouring outdoor heat exchanger side of choke valve, and the lateral pressure is the refrigerant pressure of refrigerant input side
Power, therefore, the refrigerant pressure in the neighbouring outdoor heat exchanger side of choke valve are more than or equal to the first preset refrigerant pressure threshold
During value, it can control and open choke valve progress pressure release, to ensure that choke valve is not damaged by the high hydraulic pressure of refrigerant.
In another embodiment of the invention, except using the real-time refrigerant pressure in previous embodiment according to refrigerant input side
Judge whether that turning on refrigerant pipeline is carried out outside the mode of pressure release, another control method of the invention is：Obtain refrigerant pipe roadlock
The first disconnected duration；When the first duration is more than or equal to the first preset setting duration, control conducting refrigerant pipeline, wherein,
First setting duration is determined according to the frequency of the compressor of air-conditioning.
Compressor is the frequency operation with setting, and its refrigerant being discharged within the unit interval into medium circulation pipeline is also
It is quantitative, so, during the blocking of the coolant quantity that is gathered in the refrigerant input side of the first magnetic valve or choke valve and refrigerant pipeline
Between be proportional linear relationship, i.e. the time of blocking is longer, refrigerant input side accumulation coolant quantity it is more, refrigerant pressure
It is bigger.Therefore, the refrigerant that the refrigerant input side of magnetic valve or choke valve is gathered reaches that the time of safety critical pressure value is also
Definite value, when blocking the duration of refrigerant pipeline no more than the definite value time, the refrigerant pressure of refrigerant input side is faced in safety
Under boundary's pressure value, the pressure damage influence on the first magnetic valve or choke valve and refrigerant pipeline is smaller；And blocking refrigerant
When the duration of pipeline exceedes the definite value time, the refrigerant pressure of refrigerant input side is on safety critical pressure, to the first electricity
The pressure damage influence of magnet valve or choke valve and refrigerant pipeline is larger.Therefore, control method single of the present invention blocks refrigerant pipe
The duration on road sets duration no more than preset first, wherein, the first setting duration is the foregoing definite value time.
In embodiment, the frequency of compressor is higher, then the coolant quantity of discharge is also more in the unit interval, then the first electromagnetism
The refrigerant pressure of the refrigerant input side of valve or choke valve reaches that the time of safety critical pressure value is also shorter, therefore, the first setting
Duration is determined according to the frequency of the compressor of air-conditioning, and both are in the linear relationship of inverse ratio, i.e. the frequency of compressor is higher, then the
It is shorter once setting duration, specifically, the present invention determines the flow bag of the first setting duration according to the frequency of the compressor of air-conditioning
Include：Obtain the current frequency of the compressor of air-conditioning；According to the frequency of preset compressor and the corresponding relation of the first setting duration,
Determine the first setting duration corresponding to current frequency.
In embodiment, basis before the frequency of preset compressor is dispatched from the factory with the first corresponding relation for setting duration as air-conditioning
Test institute's gathered data to determine, for example, for the air-conditioning products of a certain type, the safe refrigerant pressure critical value of the first magnetic valve
For 600kpa, the running frequency scope of compressor of air conditioner is 50hz-100hz, can be by the running frequency of compressor is divided into five
Shelves, including first frequency gear (50hz-60hz), second frequency gear (60hz-70hz), the 3rd frequency gear (70hz-
80hz), the 4th frequency gear (80hz-90hz), the 5th frequency gear (90hz-100hz), and detect compressor former respectively
During the peak frequency operation for each frequency gear stated, the first magnetic valve is from starting to block refrigerant pipeline to reaching safe refrigerant pressure
The total duration of power critical value, and using measured total duration as with each frequency gear into corresponding relation first setting when
Grow, a length of 5min when first as corresponding to first frequency gear sets, the first setting duration corresponding to second frequency gear
For 4min, etc..So, by obtaining the current compression unit frequency of operation of air conditioner, then match with preset corresponding relation, i.e.,
It can determine that the first setting duration corresponding with current compression unit frequency.
In embodiment, control method of the invention also includes：The interior of detection indoor set is changed in the first setting duration
Hot device hull-skin temperature or inner coil pipe temperature, and be compared with preset critical-temperature of freezing；If setting duration first
Interior detected indoor heat exchanger hull-skin temperature or inner coil pipe temperature, which are more than or equal to, freezes critical-temperature, then can control
Conducting flows into the refrigerant pipeline of indoor heat exchanger.
Freeze the indoor heat exchanger hull-skin temperature or inner coil pipe temperature when critical-temperature freezes for the solidifying frost of indoor set appearance,
I.e. heat exchanger hull-skin temperature or inner coil pipe temperature are equal to or less than in the case of freezing critical-temperature indoors, and indoor set can go out
Existing freezeout；And ought be in the case that heat exchanger hull-skin temperature or inner coil pipe temperature are more than and freeze critical-temperature indoors, room
The freezeout of interior machine can be eliminated gradually.Therefore, when the freezeout of frosting is occurring in air-conditioning of the present invention, outside indoor heat exchanger
Surface temperature or inner coil pipe temperature are less than or equal to freeze critical-temperature, so, and control method of the present invention is blocking inflow room
In the first setting duration after the refrigerant pipeline of interior heat exchanger, due to being influenceed and without new low temperature by the temperature of indoor environment
Refrigerant is added to indoor heat exchanger, and indoor heat exchanger hull-skin temperature or inner coil pipe temperature gradually rise, if in the first setting
Risen again in advance in duration to freezing on critical-temperature, then the refrigerant pipeline of indoor heat exchanger can be flowed into shorting advance, so that
The flow time of anti-freeze control can be shortened, to recover the normal operation of air-conditioning.
Optionally, it is the frosting critical-temperature under the conditions of current working to freeze critical-temperature.
In addition, if still not up to freeze critical-temperature after single blocks refrigerant pipeline and continues the first setting duration,
Conducting refrigerant pipeline is then needed to carry out pressure release, and after the duration of setting interval, the method blocking again according to previous embodiment is flowed
Enter the refrigerant pipeline of indoor heat exchanger, to continue to carry out indoor set anti-freeze protection control.
For prevent detect indoor set indoor heat exchanger hull-skin temperature or inner coil pipe temperature temperature sensor fault and
Cause misoperation, in embodiment, if indoor heat exchanger hull-skin temperature detected in continuous control flow several times or
Inner coil pipe temperature is still not up to freezed on critical-temperature, then control sends sensor fault alarm, it is necessary to temperature sensor
Overhauled.
Fig. 4 is the control flow chart of air-conditioning of the present invention in the winter time under heating condition in an embodiment.
Present invention also offers a kind of control method of the anti-freeze under heating condition in the winter time, including：
S401, outdoor unit when determining operation of air conditioner heating mode frosting situation.
General in embodiment, the frosting of outdoor unit is operating mode generation in the winter time, and air-conditioning is to improve outdoor environment mostly
The heating mode operation of temperature, now, in outdoor heat exchanger is filled with substantial amounts of low temperature refrigerant, and temperature is heated what user set
It is relatively low, and indoor and outdoor actual environment temperature it is relatively low in the case of, the heat exchange amount of refrigerant and outdoor environment is less, outdoor heat exchange
The outer surface of device and outer coil temperature can also be in relatively low temperature levels, and therefore, steam is easily on the surface of outdoor heat exchanger
With the frost layer that congealed into ice on outer coil pipe.So, can be by detecting that the frosting situation of outdoor unit judges whether to need progress antifreeze
Knot protection control.
In embodiment, the frosting state of outdoor unit can detect institute on outdoor unit outer surface or outer coil pipe by sensor
The ice frost thickness of condensation determines that the ice frost thickness condensed on outdoor unit outer surface or outer coil pipe reaches the thickness of setting
When, then meet the condition that needs carry out defrost.
For example, the ice frost thickness that air-conditioning is set is 10mm, sensor detects the frost of default test point on outer coil pipe
Thickness degree, if the ice frost thickness of test point is more than or equal to 10mm, can determine that the outer coil pipe of outdoor unit has reached needs
The condition of defrost is wanted, ice frost thickness has influenced whether that the normal of air-conditioning is used, it is therefore desirable to carry out defrost to outdoor unit；If
The ice frost thickness of test point is less than
10mm, then can determine the outer coil pipe of outdoor unit also not up to needs the condition of defrost, and ice frost thickness is to air-conditioning
It is normal smaller using influenceing, carry out defrost also without to outdoor unit.
In another embodiment, can also be by detecting that outdoor unit outer surface or outer coil temperature judge the bottom of outdoor unit
The frosting state of disk, specifically, the actual temperature of outdoor unit outer surface or outer coil pipe can be detected by temperature sensor, and
It is compared with preset frosting temperature, if currently detected outdoor unit outer surface or the actual temperature of outer coil pipe are not more than
During preset frosting temperature, then the problem of chassis of outdoor unit is likely to occur frost layer condensation is can determine that.
For example, the frosting temperature of the preset outdoor unit of air-conditioning is 0 DEG C, temperature sensor detection outdoor unit coil pipe works as shroud
Pipe temperature, if current coil temperature is less than or equal to 0 DEG C, can determine that the coil pipe of outdoor unit has reached needs the bar of defrost
Part, the frost layer of condensation may influence whether that the normal of air-conditioning is used, it is therefore desirable to carry out defrost to outdoor unit；If current coil pipe
Temperature is more than 0 DEG C, then can determine that the steam of outdoor environment also not up to coagulates the condition of frost, the external disk of outdoor unit on outer coil pipe
Non-condensing frost or the frost amount of condensation are less on pipe, and defrost is carried out also without to outdoor unit.
When S402, outdoor unit frosting in a heating mode, control blocks the refrigerant pipeline for flowing to outdoor unit.
In outdoor unit frosting, then it can determine that meet the condition for carrying out defrost freezes, it is necessary to carry out defrost to outdoor unit
Protection control, control blocks the refrigerant pipeline for flowing to outdoor unit, continues to input in outdoor unit to stop low temperature refrigerant, so, can
Continue to influence outer surface and outer coil temperature, the temperature by outdoor unit of outdoor unit with the temperature for avoiding the low temperature refrigerant newly inputted
The even lower temperature of frosting temperature is maintained, prevents frozen problem from further aggravating.
The refrigerant pipeline of the loss outdoor unit blocked in embodiment connects side by the arrival end of outdoor heat exchanger
Refrigerant pipeline, so, can directly stop input of the low temperature refrigerant to outdoor heat exchanger；Meanwhile, block refrigerant pipeline it
The preceding part low temperature refrigerant for having inputted outdoor heat exchanger can flow out from the port of export and continue to flow back into along refrigerant circulation circuit
In compressor, so as to gradually decrease the low temperature refrigerant amount that frozen problem is caused to outdoor heat exchanger, meanwhile, persist in outdoor
Heat exchanger section low temperature refrigerant can continue to carry out heat exchange with outdoor environment, because outdoor environment temperature is above outdoor heat exchange
Refrigerant temperature in device, therefore, in heat exchange during, low temperature refrigerant absorbs external environment heat and temperature and raised, room
The outer surface of external heat exchanger and outer coil temperature are also raised in the lump, high in the hull-skin temperature of outdoor heat exchanger and outer coil temperature
When frosting temperature, the frost layer condensed on outer surface and outer coil pipe can gradually be melted into water, this way it is possible to realize to room
The anti-freeze protection of outer machine.
In embodiment, the arrival end of outdoor heat exchanger is connected successively with choke valve and indoor heat exchanger by refrigerant pipeline
Logical, therefore, when choke valve is closed, the refrigerant flow between outdoor heat exchanger and indoor heat exchanger is to be in blocking state, room
The refrigerant that interior heat exchanger can not continue to be limited according to heating mode is flowed to outdoor heat exchanger input refrigerant.Therefore, step
Control blocks the one of which implementation for the refrigerant pipeline for flowing to outdoor unit to be exactly to close choke valve in S402, to cut off refrigerant
To the transport path of outdoor heat exchanger, and then realize the anti-freeze protection to outdoor heat exchanger.
And in the air conditioner structure shown in Fig. 2 embodiments, between the refrigerant inlet end of outdoor heat exchanger 2 and choke valve 4 also
The second magnetic valve 52 is separately provided with, conducting or resistance available for the refrigerant pipeline between control outdoor heat exchanger 2 and choke valve 4
It is disconnected.Specifically, when the second magnetic valve is in opening, the refrigerant pipeline between outdoor heat exchanger and choke valve is on
State, refrigerant can flow into outdoor heat exchanger along refrigerant pipeline；And when the second magnetic valve is closed, outdoor heat exchanger
Refrigerant pipeline between choke valve is in opening, and refrigerant can not continue to flow into outdoor heat exchanger along refrigerant pipeline.So,
Control blocks another implementation for the refrigerant pipeline for flowing to outdoor unit to be exactly that the second electromagnetism is closed in control in step S402
Valve, can equally play cut-out transport path of the refrigerant to outdoor heat exchanger, and then realize the anti-freeze guarantor to outdoor heat exchanger
The purpose of shield.
Control method of the present invention is in the break-make control process of refrigerant pipeline, and compressor is to be in opening, and refrigerant exists
It can still be moved under the activation force of compressor along refrigerant circulation circuit, because refrigerant circulation circuit is with one in heating mode
Single flow direction conveying, therefore after step S402 is blocked and flowed to the refrigerant pipeline of outdoor unit, refrigerant can be gradually accumulated in refrigerant pipe
The refrigerant input side of road blocking position, causes the refrigerant pressure of the side position gradually to increase, for example, in the embodiment of fig. 2,
After closed electromagnetic valve, the neighbouring choke valve side of magnetic valve is foregoing refrigerant input side, the refrigerant of exhaust outlet of compressor discharge
Via the input side that magnetic valve is blocked on after four-way valve and indoor heat exchanger so that the side refrigerant pressure increase.In magnetic valve
Input side accumulation refrigerant it is excessive, when cooling medium liquid presses through big, be likely to result in that refrigerant pipeline bursts, magnetic valve is damaged asks
Topic, therefore, blocks the time of refrigerant pipeline can not be long, it is necessary to which the in good time refrigerant pipeline of conducting again is let out in step S402
Press operation, to avoid local cooling medium liquid from pressing through greatly.
In embodiment, control turns on the refrigerant that refrigerant pipeline is the refrigerant input side according to refrigerant pipeline blocking position again
Pressure is determined, specifically, the pressure release control process for the air conditioner structure shown in Fig. 2 includes：Obtain the neighbouring of the second magnetic valve
Second refrigerant pressure of choke valve side；When the second refrigerant pressure is more than or equal to the second preset refrigerant pressure threshold value, control
System opens the second magnetic valve.
Second refrigerant pressure threshold value is the safety critical pressure value of refrigerant pipeline, and the refrigerant pressure in refrigerant pipeline is higher than
During the second refrigerant pressure threshold value, it is possible that refrigerant pipeline bursts, magnetic valve because the high hydraulic pressure of refrigerant damage the problem of；And cold
When refrigerant pressure in matchmaker's pipeline is less than the second refrigerant pressure threshold value, then occur that refrigerant pipeline bursts, magnetic valve is because of the high liquid of refrigerant
The bad possibility of crushing is smaller.Therefore, control method of the present invention is by the pressure position of the refrigerant input side of magnetic valve
Under two refrigerant pressure threshold values, to ensure safety and stability of the air-conditioning in anti-freeze protects flowchart process.
For the air-conditioning of the foregoing direct break-make control that refrigerant pipeline is realized by choke valve, the second acquired refrigerant
Pressure is then the refrigerant pressure of the neighbouring indoor heat exchanger side of choke valve, and the lateral pressure is the refrigerant pressure of refrigerant input side
Power, therefore, the refrigerant pressure in the neighbouring indoor heat exchanger side of choke valve are more than or equal to the second preset refrigerant pressure threshold
During value, it can control and open choke valve progress pressure release, to ensure that choke valve is not damaged by the high hydraulic pressure of refrigerant.
In another embodiment of the invention, except using the real-time refrigerant pressure in previous embodiment according to refrigerant input side
Judge whether that turning on refrigerant pipeline is carried out outside the mode of pressure release, another control method of the invention is：Obtain refrigerant pipe roadlock
The second disconnected duration；When the second duration is more than or equal to the second preset setting duration, control conducting refrigerant pipeline, wherein,
Second setting duration is determined according to the frequency of the compressor of air-conditioning.
Compressor is the frequency operation with setting, and its refrigerant being discharged within the unit interval into medium circulation pipeline is also
It is quantitative, so, during the blocking of the coolant quantity that is gathered in the refrigerant input side of the second magnetic valve or choke valve and refrigerant pipeline
Between be proportional linear relationship, i.e. the time of blocking is longer, refrigerant input side accumulation coolant quantity it is more, refrigerant pressure
It is bigger.Therefore, the refrigerant that the refrigerant input side of magnetic valve or choke valve is gathered reaches that the time of safety critical pressure value is also
Definite value, when blocking the duration of refrigerant pipeline no more than the definite value time, the refrigerant pressure of refrigerant input side is faced in safety
Under boundary's pressure value, the pressure damage influence on the second magnetic valve or choke valve and refrigerant pipeline is smaller；And blocking refrigerant
When the duration of pipeline exceedes the definite value time, the refrigerant pressure of refrigerant input side is on safety critical pressure, to the second electricity
The pressure damage influence of magnet valve or choke valve and refrigerant pipeline is larger.Therefore, control method single of the present invention blocks refrigerant pipe
The duration on road sets duration no more than preset second, wherein, the second setting duration is the foregoing definite value time.
In embodiment, the frequency of compressor is higher, then the coolant quantity of discharge is also more in the unit interval, then the second electromagnetism
The refrigerant pressure of the refrigerant input side of valve or choke valve reaches that the time of safety critical pressure value is also shorter, therefore, the second setting
Duration is determined according to the frequency of the compressor of air-conditioning, and both are in the linear relationship of inverse ratio, i.e. the frequency of compressor is higher, then the
Two setting durations are shorter, specifically, the present invention determines the flow bag of the second setting duration according to the frequency of the compressor of air-conditioning
Include：Obtain the current frequency of the compressor of air-conditioning；According to the frequency of preset compressor and the corresponding relation of the second setting duration,
Determine the second setting duration corresponding to current frequency.
In embodiment, basis before the frequency of preset compressor is dispatched from the factory with the second corresponding relation for setting duration as air-conditioning
Test institute's gathered data to determine, for example, for the air-conditioning products of a certain type, the safe refrigerant pressure critical value of the second magnetic valve
For 600kpa, the running frequency scope of compressor of air conditioner is 50hz-100hz, can be by the running frequency of compressor is divided into five
Shelves, including first frequency gear (50hz-60hz), second frequency gear (60hz-70hz), the 3rd frequency gear (70hz-
80hz), the 4th frequency gear (80hz-90hz), the 5th frequency gear (90hz-100hz), and detect compressor former respectively
During the peak frequency operation for each frequency gear stated, the second magnetic valve is from starting to block refrigerant pipeline to reaching safe refrigerant pressure
The total duration of power critical value, and using measured total duration as with each frequency gear into corresponding relation second setting when
Grow, a length of 5min when second as corresponding to first frequency gear sets, the second setting duration corresponding to second frequency gear
For 4min, etc..So, by obtaining the current compression unit frequency of operation of air conditioner, then match with preset corresponding relation, i.e.,
It can determine that the second setting duration corresponding with current compression unit frequency.
In embodiment, control method of the invention also includes：The outdoor of detection outdoor unit is changed in the second setting duration
Hot device hull-skin temperature or outer coil temperature, and be compared with preset critical-temperature of freezing；If setting duration second
Interior detected outdoor heat exchanger hull-skin temperature or outer coil temperature, which are more than or equal to, freezes critical-temperature, then can control
Conducting flows into the refrigerant pipeline of outdoor heat exchanger.
Freeze the outdoor heat exchanger hull-skin temperature or outer coil temperature when critical-temperature occurs solidifying frost icing for outdoor unit,
I.e. in outdoor heat exchanger hull-skin temperature or outer coil temperature equal to or less than in the case of freezing critical-temperature, outdoor unit can go out
Existing freezeout；And in the case of being more than in outdoor heat exchanger hull-skin temperature or outer coil temperature and freezing critical-temperature, room
The freezeout of outer machine can be eliminated gradually.Therefore, when the freezeout of frosting is occurring in air-conditioning of the present invention, outside outdoor heat exchanger
Surface temperature or outer coil temperature are less than or equal to freeze critical-temperature, so, and control method of the present invention is blocking inflow room
In the second setting duration after the refrigerant pipeline of external heat exchanger, due to being influenceed and without new low temperature by the temperature of indoor environment
Refrigerant is added to outdoor heat exchanger, and outdoor heat exchanger hull-skin temperature or outer coil temperature gradually rise, if in the second setting
Risen again in advance in duration to freezing on critical-temperature, then the refrigerant pipeline of outdoor heat exchanger can be flowed into shorting advance, so that
The flow time of anti-freeze control can be shortened, to recover the normal operation of air-conditioning.
Optionally, it is the frosting critical-temperature under the conditions of current working to freeze critical-temperature.
In addition, if still not up to freeze critical-temperature after single blocks refrigerant pipeline and continues the second setting duration,
Conducting refrigerant pipeline is then needed to carry out pressure release, and after the duration of setting interval, the method blocking again according to previous embodiment is flowed
Enter the refrigerant pipeline of outdoor heat exchanger, to continue to carry out outdoor unit anti-freeze protection control.
For prevent detect outdoor unit outdoor heat exchanger hull-skin temperature or outer coil temperature temperature sensor fault and
Cause misoperation, in embodiment, if outdoor heat exchanger hull-skin temperature detected in continuous control flow several times or
Outer coil temperature still not up to freezes on critical-temperature, then needs control to send sensor fault alarm, so that user is timely
Overhaul plan is carried out to temperature sensor.
Present invention also offers a kind of control device of air-conditioning, anti-freeze is carried out to indoor set available in summer condition
Protection control, specifically, control device includes：Determining unit, the knot for determining indoor set during operation of air conditioner refrigeration mode
White situation；Control unit, during for indoor set frosting in cooling mode, control blocks the refrigerant pipeline for flowing to indoor set.
For the air conditioner structure in the embodiment shown in Fig. 1, control unit control blocks the refrigerant pipeline for flowing to indoor set
Flow include：The first electromagnetism being connected on the refrigerant pipeline between the indoor heat exchanger of indoor set and choke valve is closed in control
Valve.
In embodiment, controller also includes acquiring unit, and acquiring unit is used for the neighbouring throttling for obtaining the first magnetic valve
First refrigerant pressure of valve side；Accordingly, control unit is cold for being more than or equal to preset first in the first refrigerant pressure
During matchmaker's pressure threshold, the first magnetic valve is opened in control.
In another embodiment, controller also includes acquiring unit, and acquiring unit is used to obtain the of refrigerant pipeline blocking
One duration；Accordingly, control unit is used for when the first duration is more than or equal to the first preset setting duration, and control conducting is cold
Matchmaker's pipeline, wherein, the first setting duration is determined according to the frequency of the compressor of air-conditioning.
In embodiment, determining unit is used to determine the first setting duration according to the frequency of the compressor of air-conditioning, specifically,
Acquiring unit obtains the current frequency of the compressor of air-conditioning；When determining unit is set according to the frequency of preset compressor with first
Long corresponding relation, determines the first setting duration corresponding to current frequency.
Present invention also offers a kind of control device of air-conditioning, anti-freeze is carried out to outdoor unit available for operating mode in the winter time
Protection control, specifically, control device includes：Determining unit, the knot for determining outdoor unit during operation of air conditioner heating mode
White situation；Control unit, during for outdoor unit frosting in a heating mode, control blocks the refrigerant pipeline for flowing to outdoor unit.
For the air conditioner structure in the embodiment shown in Fig. 2, control unit control blocks the refrigerant pipeline for flowing to outdoor unit
Flow include：The second electromagnetism being connected on the refrigerant pipeline between the outdoor heat exchanger of outdoor unit and choke valve is closed in control
Valve.
In embodiment, controller also includes acquiring unit, and acquiring unit is used for the neighbouring throttling for obtaining the second magnetic valve
Second refrigerant pressure of valve side；Accordingly, control unit is cold for being more than or equal to preset second in the second refrigerant pressure
During matchmaker's pressure threshold, the second magnetic valve is opened in control.
In another embodiment, controller also includes acquiring unit, and acquiring unit is used to obtain the of refrigerant pipeline blocking
Two durations；Accordingly, control unit is used for when the second duration is more than or equal to the second preset setting duration, and control conducting is cold
Matchmaker's pipeline, wherein, the second setting duration is determined according to the frequency of the compressor of air-conditioning.
In embodiment, determining unit is used to determine the second setting duration according to the frequency of the compressor of air-conditioning, specifically,
Acquiring unit obtains the current frequency of the compressor of air-conditioning；When determining unit is set according to the frequency of preset compressor with second
Long corresponding relation, determines the second setting duration corresponding to current frequency.
It should be appreciated that the invention is not limited in the flow and structure for being described above and being shown in the drawings,
And various modifications and changes can be being carried out without departing from the scope.The scope of the present invention is only limited by appended claim
System.
Claims (12)
1. a kind of control method of air-conditioning, it is characterised in that including：
The frosting situation of indoor set when determining the operation of air conditioner refrigeration mode；
During the indoor set frosting in cooling mode, control blocks the refrigerant pipeline for flowing to the indoor set.
2. control method according to claim 1, the control blocks the refrigerant pipeline for flowing to the indoor set to include：
The first magnetic valve being connected on the refrigerant pipeline between the indoor heat exchanger of the indoor set and choke valve is closed in control.
3. control method according to claim 2, it is characterised in that the control method also includes：
Obtain the first refrigerant pressure of the neighbouring choke valve side of first magnetic valve；
When first refrigerant pressure is more than or equal to the first preset refrigerant pressure threshold value, first electromagnetism is opened in control
Valve.
4. control method according to claim 1, it is characterised in that the control method also includes：
Obtain the first duration that the refrigerant pipeline is blocked；
When first duration is more than or equal to the first preset setting duration, the control conducting refrigerant pipeline, wherein, institute
The first setting duration is stated to be determined according to the frequency of the compressor of the air-conditioning.
5. control method according to claim 4, it is characterised in that described first sets pressure of the duration according to the air-conditioning
The frequency determination of contracting machine, including：
Obtain the current frequency of the compressor of the air-conditioning；
According to the frequency of preset compressor and the corresponding relation of the first setting duration, the corresponding to the current frequency is determined
One setting duration.
6. a kind of control method of air-conditioning, it is characterised in that including：
The frosting situation of outdoor unit when determining the operation of air conditioner heating mode；
During the outdoor unit frosting in a heating mode, control blocks the refrigerant pipeline for flowing to the outdoor unit.
7. control method according to claim 6, the control blocks the refrigerant pipeline for flowing to the outdoor unit to include：
The second magnetic valve being connected on the refrigerant pipeline between the outdoor heat exchanger of the outdoor unit and choke valve is closed in control.
8. control method according to claim 7, it is characterised in that the control method also includes：
Obtain the second refrigerant pressure of the neighbouring choke valve side of second magnetic valve；
When the refrigerant pressure is more than or equal to the second preset refrigerant pressure threshold value, second magnetic valve is opened in control.
9. control method according to claim 6, it is characterised in that the control method also includes：
Obtain the second duration that the refrigerant pipeline is blocked；
When second duration is more than or equal to the second preset setting duration, the control conducting refrigerant pipeline, wherein, institute
The second setting duration is stated to be determined according to the frequency of the compressor of the air-conditioning.
10. control method according to claim 9, it is characterised in that the second setting duration is according to the air-conditioning
The frequency determination of compressor, including：
Obtain the current frequency of the compressor of the air-conditioning；
According to the frequency of preset compressor and the corresponding relation of the second setting duration, the corresponding to the current frequency is determined
Two setting durations.
11. a kind of control device of air-conditioning, it is characterised in that the control device includes：
Determining unit, the frosting situation for determining the indoor set during operation of air conditioner refrigeration mode；
Control unit, during for the indoor set frosting in cooling mode, control blocks the refrigerant for flowing to the indoor set
Pipeline.
12. a kind of control device of air-conditioning, it is characterised in that the control device includes：
Determining unit, the frosting situation for determining the outdoor unit during operation of air conditioner heating mode；
Control unit, during for the outdoor unit frosting in a heating mode, control blocks the refrigerant for flowing to the outdoor unit
Pipeline.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710348657.0A CN107166643A (en) | 2017-05-17 | 2017-05-17 | A kind of control method and device of air-conditioning |
| RU2019115926A RU2722319C1 (en) | 2017-05-17 | 2018-04-28 | Method and apparatus for controlling air conditioner |
| EP18801309.8A EP3620724A4 (en) | 2017-05-17 | 2018-04-28 | Control method and device for air conditioner |
| PCT/CN2018/085040 WO2018210119A1 (en) | 2017-05-17 | 2018-04-28 | Control method and device for air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710348657.0A CN107166643A (en) | 2017-05-17 | 2017-05-17 | A kind of control method and device of air-conditioning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107166643A true CN107166643A (en) | 2017-09-15 |
Family
ID=59816480
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710348657.0A Pending CN107166643A (en) | 2017-05-17 | 2017-05-17 | A kind of control method and device of air-conditioning |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3620724A4 (en) |
| CN (1) | CN107166643A (en) |
| RU (1) | RU2722319C1 (en) |
| WO (1) | WO2018210119A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018210119A1 (en) * | 2017-05-17 | 2018-11-22 | 青岛海尔空调器有限总公司 | Control method and device for air conditioner |
| CN109611964A (en) * | 2018-11-12 | 2019-04-12 | 江苏中科睿赛污染控制工程有限公司 | Defrost anti-freezing fresh air clearing machine |
| CN110260467A (en) * | 2019-05-28 | 2019-09-20 | 青岛海尔空调电子有限公司 | Air conditioner and its anti-freeze protection control method and control device |
| CN112524748A (en) * | 2020-12-09 | 2021-03-19 | 珠海格力电器股份有限公司 | Air conditioner operation control method, device, equipment and storage medium |
| CN115682306A (en) * | 2022-10-24 | 2023-02-03 | 珠海格力电器股份有限公司 | Defrosting control method, defrosting control device, air conditioner and heat pump system |
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| CN113932399B (en) * | 2020-07-13 | 2023-07-07 | 广东美的暖通设备有限公司 | Antifreezing control method and device, cold and hot water machine and computer storage medium |
| CN114811826B (en) * | 2022-04-02 | 2023-05-02 | 珠海格力电器股份有限公司 | Control method and device of air conditioning system, air conditioning system and storage medium |
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- 2017-05-17 CN CN201710348657.0A patent/CN107166643A/en active Pending
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| WO2009096915A1 (en) * | 2008-01-30 | 2009-08-06 | Carrier Corporation | Refrigerant system with reheat refrigerant circuit |
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| WO2018210119A1 (en) * | 2017-05-17 | 2018-11-22 | 青岛海尔空调器有限总公司 | Control method and device for air conditioner |
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| CN115682306A (en) * | 2022-10-24 | 2023-02-03 | 珠海格力电器股份有限公司 | Defrosting control method, defrosting control device, air conditioner and heat pump system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018210119A1 (en) | 2018-11-22 |
| RU2722319C1 (en) | 2020-05-29 |
| EP3620724A1 (en) | 2020-03-11 |
| EP3620724A4 (en) | 2020-12-02 |
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Application publication date: 20170915 |