CN108224678A - A kind of air-conditioning and defrosting control method - Google Patents
A kind of air-conditioning and defrosting control method Download PDFInfo
- Publication number
- CN108224678A CN108224678A CN201711464037.XA CN201711464037A CN108224678A CN 108224678 A CN108224678 A CN 108224678A CN 201711464037 A CN201711464037 A CN 201711464037A CN 108224678 A CN108224678 A CN 108224678A
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- exchanger fin
- fin group
- control
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention discloses a kind of air-conditioning and defrosting control methods, belong to air-conditioning technical field.The outdoor heat exchanger of air-conditioning includes at least one superposed first heat exchanger fin group and at least one the second heat exchanger fin group positioned at lower part；Air-conditioning further includes controller, and controller is used for：Judge whether to meet preset Defrost operation condition；If it is satisfied, then control operation of air conditioner defrosting mode, wherein, when being run with defrosting mode, the connection of control the first heat exchanger fin group of conducting and medium circulation pipeline blocks the connection of the second heat exchanger fin group and medium circulation pipeline；After the defrosting of the first heat exchanger fin group is completed, control blocks the connection of the first heat exchanger fin group and medium circulation pipeline, and the connection of the second heat exchanger fin group and medium circulation pipeline is connected.By first up and then down defrosting sequence, the whole defrosting time of outdoor heat exchanger can be shortened, and can be to avoid appearance of the frost water that the heat exchanger fin group on top is melted the heat exchanger fin group regelation of lower part the problem of.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly to a kind of air-conditioning and defrosting control method.
Background technology
Multiple air-conditioning has the characteristics that online flexible, interior machine can hide installation and performance is high, is generally used for
Business place, such as large-scale market, office building, hotel etc.；Multiple indoor units of multiple air-conditioning generally share same big
Type outdoor unit in winter or under the conditions of harsh climate, easily condenses more ice on the heat exchanger of the larger outdoor unit of volume
Frost influences the heat exchange efficiency of heat exchanger, at this point, air-conditioning needs operation defrosting mode to defrost the heat exchanger of outdoor unit, one
As, air-conditioner defrosting run when the control mode of outdoor heat exchanger is substantially it is identical, i.e., Defrost operation when outdoor unit institute
The cold medium flux for having heat exchanger flow circuit is almost the same, and synchronous start-stop；For the lower half portion of heat exchanger, the frost water after defrosting
Mainly it is dropped on chassis, and for the top half of heat exchanger, the frost water needs of thawing could be dripped via lower half portion
It drops down onto on chassis, flow path is longer；Therefore, when air-conditioning defrosting mode out of service, the frost water that top half is melted is easy
Regelation is influenced in lower half portion by outdoor temperature, and therefore, the practical defrosting effect of the defrosting control mode of synchronous start-stop is not
Good, the lower half portion for being easy to cause outdoor heat exchanger condenses the problem of increasing in frost.
Invention content
The present invention provides a kind of air-conditioning and defrosting control methods, it is intended to solve conventional air-conditioning defrosting control mode and easily lead
The problem of lower half portion frost condensation of outdoor heat exchanger is caused to increase.In order to the embodiment to disclosure some aspects there are one base
This understanding, is shown below simple summary.The summarized section is not extensive overview, nor to determine key/critical group
Into element or describe the protection domains of these embodiments.Its sole purpose is that some concepts are presented with simple form, is made with this
Preamble for following detailed description.
According to the first aspect of the invention, a kind of air-conditioning is provided, the outdoor heat exchanger of air-conditioning includes at least one position
The first heat exchanger fin group and at least one the second heat exchanger fin group positioned at lower part in top, the first heat exchanger fin group and the second heat exchanger fin
Group connects respectively with the medium circulation pipeline of air-conditioning；
Air-conditioning further includes controller, and controller is used for：Judge whether to meet preset Defrost operation condition；If it is satisfied,
Operation of air conditioner defrosting mode is then controlled, wherein, when being run with defrosting mode, control the first heat exchanger fin group of conducting and refrigerant circulation
The connection of pipeline blocks the connection of the second heat exchanger fin group and medium circulation pipeline；After the defrosting of the first heat exchanger fin group is completed, control
System blocks the connection of the first heat exchanger fin group and medium circulation pipeline, and the connection of the second heat exchanger fin group and medium circulation pipeline is connected.
In a kind of optional embodiment, preset Defrost operation condition, including：Receive air-conditioning fortune input by user
The control instruction of row defrosting mode；Alternatively, outdoor environment temperature is less than set temperature threshold value.
In a kind of optional embodiment, it is outdoor that the first heat exchanger fin is mounted on first to be connected with medium circulation pipeline
Exchange heat branch, and the second heat exchanger fin is mounted on the second outdoor heat exchange branch being connected with medium circulation pipeline, the first outdoor heat exchange
Branch and the second outdoor heat exchange branch circuit parallel connection, wherein, the first outdoor heat exchange branch road is equipped with the first control valve, the second outdoor heat exchange
Branch road is equipped with the second control valve；
Controller is specifically used for：The first control valve of the first outdoor heat exchange branch is opened in control, and is controlled and closed second Room
Second control valve of outer heat exchange branch；And the first control valve of the first outdoor heat exchange branch is closed in control, and is controlled and opened the
Second control valve of two outdoor heat exchange branches.
In a kind of optional embodiment, air-conditioning further includes to control refrigerant the four of the flow direction of medium circulation pipeline
Port valve, four-way valve have the exhaust outlet of compressor is made to be connected with outdoor heat exchanger, first that air entry is connected with indoor heat exchanger
Valve position and the exhaust outlet of compressor is made to be connected with indoor heat exchanger, the second valve position that air entry is connected with outdoor heat exchanger；
Controller is specifically used for：Control four-way valve switches to the state in the first valve position.
In a kind of optional embodiment, controller is additionally operable to：
Obtain the cumulative time of operation of air conditioner defrosting mode；
When the cumulative time reaching preset time threshold, then judge that the defrosting of the first heat exchanger fin group is completed.
According to the second aspect of the invention, the present invention also provides a kind of air-conditioner defrosting control method, the outdoors of air-conditioning
Heat exchanger include at least one superposed first heat exchanger fin group and at least one the second heat exchanger fin group positioned at lower part, first
Heat exchanger fin group and the second heat exchanger fin group connect respectively with the medium circulation pipeline of air-conditioning；
Control method includes：Judge whether to meet preset Defrost operation condition；If it is satisfied, then control operation of air conditioner removes
White pattern, wherein, when being run with defrosting mode, the connection of control the first heat exchanger fin group of conducting and medium circulation pipeline blocks
The connection of second heat exchanger fin group and medium circulation pipeline；After the defrosting of the first heat exchanger fin group is completed, control blocks the first heat exchange
The connection of the second heat exchanger fin group and medium circulation pipeline is connected in the connection of piece group and medium circulation pipeline.
In a kind of optional embodiment, preset Defrost operation condition, including：Receive air-conditioning fortune input by user
The control instruction of row defrosting mode；Alternatively, outdoor environment temperature is less than set temperature threshold value.
In a kind of optional embodiment, it is outdoor that the first heat exchanger fin is mounted on first to be connected with medium circulation pipeline
Exchange heat branch, and the second heat exchanger fin is mounted on the second outdoor heat exchange branch being connected with medium circulation pipeline, the first outdoor heat exchange
Branch and the second outdoor heat exchange branch circuit parallel connection, wherein, the first outdoor heat exchange branch road is equipped with the first control valve, the second outdoor heat exchange
Branch road is equipped with the second control valve；
The connection of control the first heat exchanger fin group of conducting and medium circulation pipeline, blocks the second heat exchanger fin group and refrigerant circulation pipe
The connection on road, including：The first control valve of the first outdoor heat exchange branch is opened in control, and is controlled and closed the second outdoor heat exchange branch
The second control valve；Control blocks the connection of the first heat exchanger fin group and medium circulation pipeline, and the second heat exchanger fin group and refrigerant is connected
The connection of circulation line, including：The first control valve of the first outdoor heat exchange branch is closed in control, and is controlled to open and be changed outside second Room
Second control valve of hot branch.
In a kind of optional embodiment, air-conditioning further includes to control refrigerant the four of the flow direction of medium circulation pipeline
Port valve, four-way valve have the exhaust outlet of compressor is made to be connected with outdoor heat exchanger, first that air entry is connected with indoor heat exchanger
Valve position and the exhaust outlet of compressor is made to be connected with indoor heat exchanger, the second valve position that air entry is connected with outdoor heat exchanger；
Operation of air conditioner defrosting mode is controlled, including：Control four-way valve switches to the state in the first valve position.
In a kind of optional embodiment, the connection of the first heat exchanger fin group and medium circulation pipeline is blocked in control, is led
Before the connection of logical second heat exchanger fin group and medium circulation pipeline, control method further includes：
Obtain the cumulative time of operation of air conditioner defrosting mode；
When the cumulative time reaching preset time threshold, then judge that the defrosting of the first heat exchanger fin group is completed.
It is of the invention to be using advantageous effect possessed by above-mentioned technical proposal：
Air-conditioning provided by the invention allows for the frost water that defrosting generates and is affected by gravity and can flow from top to bottom, so
The break-make control of the various heat exchange piece group cold medium flux of outdoor heat exchanger is to carry out from top to bottom, passes through sequentially switched conductive or resistance
Break corresponding coolant loop, makes the heat that external heat exchanger absorbs and the heat that compressor generates will be more intensively to working as front tube
The heat exchanger fin group of road conducting defrosts, and more directly melts the frost of this part heat exchanger；Also, it is removed by first up and then down
White sequence, can be such that the frost water that the heat exchanger fin group on top is melted will continue to along outdoor heat exchanger flow down, Neng Gouwei
The defrosting action extraction preheating of the heat exchanger fin group of lower part, and the frost water that the heat exchanger fin group defrosting on top generates also can be by lower part
The frost of heat exchanger fin group melt a part, be conducive to shorten the whole defrosting time of outdoor heat exchanger, and can be to avoid
Appearance of the frost water that the heat exchanger fin group on top is melted the heat exchanger fin group regelation of lower part the problem of.
It should be understood that above general description and following detailed description are only exemplary and explanatory, not
It can the limitation present invention.
Description of the drawings
Attached drawing herein is incorporated into specification and forms the part of this specification, shows the implementation for meeting the present invention
Example, and be used to explain the principle of the present invention together with specification.
Fig. 1 is the structure diagram according to the air-conditioning of the present invention shown by an exemplary embodiment；
Fig. 2 is the flow chart according to the defrosting control method of the present invention shown by an exemplary embodiment.
Wherein, 1, indoor units；11st, indoor heat exchanger；
2nd, outdoor unit；21st, outdoor heat exchanger；211st, the first heat exchanger fin group；212.th, the second heat exchanger fin group；22nd, it compresses
Machine；23rd, four-way valve；
3rd, medium circulation pipeline；31st, the first outdoor heat exchange branch；32nd, the second outdoor heat exchange branch；
41st, the first control valve；42nd, the second control valve.
Specific 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, it is electrical, process and other change.Embodiment
Only represent possible variation.Unless explicitly requested, otherwise individual components and functionality is optional, and the sequence operated can be with
Variation.The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.This hair
The range of bright embodiment includes equivalent obtained by the entire scope of claims and all of claims
Object.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, it is not meant to automatically limit ranging from any single invention of the application
Or inventive concept.Herein, relational terms such as first and second and the like be used only for by an entity or operation with
Another entity or operation distinguish, and without requiring or implying, there are any practical relationships between these entities or operation
Or sequence.Moreover, term " comprising ", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so as to
So that the process, method or equipment that include a series of elements not only include those elements, but also including being not explicitly listed
Other element or further include as this process, method or the intrinsic element of equipment.In the feelings not limited more
Under condition, the element that is limited by sentence "including a ...", it is not excluded that in the process including the element, method or equipment
In also there are other identical elements.Each embodiment herein is described by the way of progressive, and each embodiment stresses
Be all difference from other examples, just to refer each other for identical similar portion between each embodiment.For implementing
For method, product etc. disclosed in example, due to its with embodiment disclosed in method part it is corresponding, so the comparison of description is simple
Single, reference may be made to the description of the method.
Fig. 1 is the structure diagram according to the air-conditioning of the present invention shown by an exemplary embodiment.
As shown in Figure 1, the present invention provides a kind of air-conditioning, air-conditioning includes indoor units 1 and outdoor unit 2, wherein, it is indoor
Unit 1 includes one or more independent indoor units, and each indoor unit has an indoor heat exchanger 11, and outdoor unit 2 includes one
Outdoor unit, outdoor unit include outdoor heat exchanger 21；The indoor heat exchanger 11 of multiple indoor units is parallel to the refrigerant circulation pipe of air-conditioning
Road 3, and can be respectively by medium circulation pipeline 3, the cycle that high/low temperature refrigerant is carried out with the outdoor heat exchanger 21 of outdoor unit exchanges.
Multiple indoor units can be respectively arranged in different or same indoor scene, and outdoor unit is set in outdoor scene, subsequent
In embodiment, mainly it is explained with above-mentioned multiple indoor units and the multiple air-conditioning that an outdoor unit is formed.
Here, the outdoor heat exchanger 21 of air-conditioning includes multiple heat exchanger fin groups, is changed including at least one superposed first
Backing group 211 and at least one the second heat exchanger fin group 212 positioned at lower part, aforementioned upper and lower part refer to two kinds of heat exchanger fin groups
The laying relationship of spatial altitude position in outdoor unit, the second heat exchanger fin group 212 are located at the lower section of the first heat exchanger fin group 211；
Certainly, the air-conditioning that the present invention is applicable in is not limited in the structure type of bilevel outdoor heat exchanger 21, can also apply
Cover 21 pattern of outdoor heat exchanger including heat exchanger fin group in an intermediate position, be such as divided into upper, middle and lower-ranking heat exchanger fin group.
It here, can be by one or more heat exchanger fin groups in top for the structure type of more than two layers of outdoor heat exchanger 21
The first aforementioned heat exchanger fin group 211 is divided into, others are divided into the second heat exchanger fin group 212, such as above-mentioned upper, middle level exchange heat
Piece group is divided into the first heat exchanger fin group 211, and above-mentioned lower floor's heat exchanger fin group is divided into the second heat exchanger fin group 212；It alternatively, will place
One or more heat exchanger fin groups in lower section are divided into the second aforementioned heat exchanger fin group 212, and others are divided into the first heat exchanger fin
Group 211, such as will be above-mentioned in, lower floor's heat exchanger fin group be divided into the second heat exchanger fin group 212, upper strata heat exchanger fin group is divided into first
Heat exchanger fin group 211.
In the present embodiment, the first heat exchanger fin group 211 and the second heat exchanger fin group 212 respectively with the medium circulation pipeline of air-conditioning
3 connect, and the refrigerant in medium circulation pipeline 3 can flow separately through the first heat exchanger fin group 211 and the second heat exchanger fin group 212, and can
In operation of air conditioner defrosting mode, it is utilized respectively and flows through the refrigerant heat of various heat exchange piece group and defrost.
In a kind of optional embodiment, the defrosting mode of operation of air conditioner is conventional defrosting mode, specifically, the defrosting
The refrigerant circulation flow path that pattern includes air-conditioning is switched to the refrigerant flow direction identical with refrigeration mode, i.e. the exhaust outlet institute of compressor 22
The refrigerant of discharge first flows through outdoor heat exchanger 21 and then flows to indoor heat exchanger 11, and finally, refrigerant is from indoor heat exchanger 11
Flow back to the air entry of compressor 22；During this, the temperature of the refrigerant of exhaust outlet discharge carries more heat transfer, temperature compared with
Height, therefore, when flowing through outdoor heat exchanger 21, the heat of high temperature refrigerant is transmitted to the outer surface of outdoor heat exchanger 21, so that solidifying
It ties and melts after the frost of the outer surface of outdoor heat exchanger 21 absorbs heat, so as to achieve the purpose that defrosting.
Specifically, the air-conditioning of the present invention further includes controller (not shown), for controlling to outdoor heat exchanger 21
Defrosting operation；Controller is used for：
Judge whether to meet preset Defrost operation condition；
In one embodiment, preset Defrost operation condition, including：Receive operation of air conditioner defrosting mode input by user
Control instruction.Generally, when the condensation frost on the outdoor heat exchanger 21 of air-conditioner outdoor unit is excessive, outdoor heat exchanger 21 with
The heat exchange amount of outdoor environment is reduced, and the heating performance of air-conditioning itself can reduce, and therefore, user can pass through remote controler and control plane
The air conditioner parts such as plate, to air-conditioner body send start operation defrosting mode control instruction, air-conditioning after the control is received,
Controller, which can determine that, meets preset Defrost operation condition.
Alternatively, in another embodiment, air-conditioner outdoor unit is typically provided with outdoor circumstance temperature sensor available for outside sensing chamber
Environment temperature；When outdoor environment temperature is relatively low, the solidifying white temperature of icing is will appear on outdoor heat exchanger 21, therefore, according to outdoor
The actual change situation of environment temperature can estimate the icing condition on outdoor heat exchanger 21, therefore, in this reality to a certain extent
It applies in example, preset Defrost operation condition includes outdoor environment temperature and is less than set temperature threshold value；The set temperature threshold value is pre-
The threshold parameter that the outdoor heat exchanger 21 that measures of the modes such as experiment is susceptible to icing is first passed through, when outdoor temperature reaches or low
When the set temperature threshold value, it will appear ice formation issues on outdoor heat exchanger 21.Therefore, when controller relatively obtains outdoor circumstance temperature
When the outdoor environment temperature that sensor is detected is less than the set temperature threshold value to prestore, you can judgement meets preset Defrost operation
Condition.
Preferably, air-conditioning can also set a defrosting sensor, for detecting the coil temperature of outdoor heat exchanger 21, with root
According to the practical coil temperature of outdoor heat exchanger 21, determine whether be easy to cause the outer of outdoor heat exchanger 21 under the conditions of the coil temperature
Surface freezes solidifying white；Therefore, controller can also preset a coil temperature threshold value, with according to coil temperature threshold value and practical coil pipe
The comparison result of temperature judges whether to meet preset Defrost operation condition.Compared to aforementioned outdoor environment temperature and setting
The manner of comparison of temperature threshold, the practical coil temperature that defrosting sensor detects more are close to the solidifying ice frosting of generation and ask
The hull-skin temperature of the outdoor heat exchanger 21 of topic, therefore the precision for judging control can be effectively improved.
If meeting preset Defrost operation condition, operation of air conditioner defrosting mode is controlled, wherein, it is transported with defrosting mode
During row, the high temperature refrigerant that compressor 22 is discharged first flows to outdoor heat exchanger 21；Meanwhile control the first heat exchanger fin group 211 of conducting with
The connection of medium circulation pipeline 3, at this point, the first heat exchanger fin group 211 is connected with medium circulation pipeline 3, the height that compressor 22 is discharged
Warm refrigerant can flow through First Heat Exchanger piece group, and the heat for passing through high temperature refrigerant defrosts to the first heat exchanger fin group 211；And
And the connection of the second heat exchanger fin group 212 and medium circulation pipeline 3 is blocked, at this point, the second heat exchanger fin group 212 and refrigerant circulation pipe
Road 3 does not connect, and the high temperature refrigerant that compressor 22 is discharged is not passed through the second heat exchanger fin group 212.
After the defrosting of the first heat exchanger fin group 211 is completed, control blocks the first heat exchanger fin group 211 and medium circulation pipeline 3
Connection, at this point, the first heat exchanger fin group 211 is not connected with medium circulation pipeline 3, the high temperature refrigerant that compressor 22 is discharged is not passed through
Second heat exchanger fin group 212；Also, the connection of the second heat exchanger fin group of conducting 212 and medium circulation pipeline 3, at this point, the second heat exchanger fin
Group 212 is connected with medium circulation pipeline 3, and the high temperature refrigerant that compressor 22 is discharged can flow through the second Heat exchanger sheet group, and pass through
The heat of high temperature refrigerant defrosts to the second heat exchanger fin group 212.
By first up and then down defrosting sequence, the frost water that the heat exchanger fin group on top is melted can be made to will continue to along room
21 flow down of external heat exchanger can be that the defrosting action extraction of the heat exchanger fin group of lower part preheats, and the heat exchanger fin group on top
The frost of the heat exchanger fin group of lower part can also be melted a part by the frost water that defrosting generates, and be conducive to shorten outdoor heat exchanger 21
Whole defrosting time, and can again be coagulated to avoid heat exchanger fin group of the frost water that the heat exchanger fin group on top is melted in lower part
The appearance of the problem of knot.
In the air conditioner structure shown by the present invention, the first heat exchanger fin group 211 is set on what is be connected with medium circulation pipeline 3
First outdoor heat exchange branch 31, the second heat exchanger fin group 212 are set on the second outdoor heat exchange branch being connected with medium circulation pipeline 3
32, the first outdoor heat exchange branch 31 is in parallel with the second outdoor heat exchange branch 32, wherein, the first outdoor heat exchange branch 31 is equipped with the
One control valve 41, the second outdoor heat exchange branch 32 are equipped with the second control valve 42；In embodiment, the first control valve 41 is set to
The side of the liquid feeding end of one heat exchanger fin group 211, the second outdoor heat exchange branch 32 are set to the liquid feeding end of the second heat exchanger fin group 212
Side.
Therefore, in the first stage defrosted to the first heat exchanger fin group 211, controller is specifically used for：The first Room is opened in control
First control valve 41 of outer heat exchange branch 31, and control the second control valve 42 for closing the second outdoor heat exchange branch 32；To
The second stage of two heat exchanger fin groups 212 defrosting, controller are specifically used for：The first control of the first outdoor heat exchange branch 31 is closed in control
Valve 41 processed, and control the second control valve 42 for opening the second outdoor heat exchange branch 32.
In an embodiment of the present invention, air-conditioning further includes to control refrigerant in the four-way of the flow direction of medium circulation pipeline 3
Valve 23, four-way valve 23 have the exhaust outlet of compressor 22 is made to be connected with outdoor heat exchanger 21, air entry and indoor heat exchanger 11 connect
Logical the first valve position and the exhaust outlet of compressor 22 is made to be connected with indoor heat exchanger 11, air entry and outdoor heat exchanger 21 connect
The second logical valve position；
In this way, when air-conditioning needs to run defrosting mode, controller can control four-way valve 23 to switch in the first valve
The state of position, makes that the exhaust outlet of compressor 22 is connected with outdoor heat exchanger 21, air entry is connected with indoor heat exchanger 11, you can makes
Medium circulation pipeline 3 switches to the refrigerant flow direction identical with refrigeration mode, and the high temperature refrigerant that compressor 22 is discharged first flows through outdoor
Heat exchanger 21, and defrost to outdoor heat exchanger 21.
In one embodiment of this invention, controller is additionally operable to judge whether the first heat exchanger fin group 211 is completed to defrost, with
After first heat exchanger fin group 211 completes defrosting, switch to and aforementioned defrost to the second heat exchanger fin group 212；Specifically, control
Device judges that the first heat exchanger fin group 211 is that the process for completing to defrost includes：
Obtain the cumulative time of operation of air conditioner defrosting mode；
Generally, in the case that air-conditioning meets preset Defrost operation condition, air-conditioning switches to defrosting by heating mode
Mode operation, at this point, controller carries out timing.
When the cumulative time reaching preset time threshold, then judge that the defrosting of the first heat exchanger fin group 211 is completed.
Controller of the present invention also prestores one or more time thresholds, and multiple time thresholds are to be determined beforehand through experiment
Different chamber outside under temperature condition, the first heat exchanger fin group 211 is basically completed the required defrosting duration of defrosting, therefore, passes through ratio
Cumulative time and preset time threshold compared with operation of air conditioner defrosting mode, you can under the conditions of determining current outdoor temperature, first
Whether heat exchanger fin group 211 is basically completed defrosting；When judging that the first heat exchanger fin group 211 is basically completed defrosting, you can be switched to pair
Second heat exchanger fin group 212 defrosts.
Alternatively, in another embodiment of the invention, controller can also be according to the current coil temperature of First Heat Exchanger
Judge whether to complete defrosting；Specifically, controller judges that the first heat exchanger fin group 211 is that the process for completing to defrost includes：Acquisition removes
The current coil temperature of the first heat exchanger fin group 211 detected by white sensor；When current coil temperature reaches preset temperature
During threshold value, then judge that the defrosting of the first heat exchanger fin group 211 is completed.
Fig. 2 is the flow chart one according to the defrosting control method of the present invention shown by an exemplary embodiment；
The present invention also provides a kind of air-conditioner defrosting control method, the outdoor heat exchanger for the air-conditioning applied is included at least
One superposed first heat exchanger fin group and at least one the second heat exchanger fin group positioned at lower part, the first heat exchanger fin group and second
Heat exchanger fin group connects respectively with the medium circulation pipeline of air-conditioning；
Control method includes：
S201, judge whether to meet preset Defrost operation condition, if it is satisfied, then step S202 is performed, if discontented
Foot, then repeat step S201；
S202, control operation of air conditioner defrosting mode,
The connection of S203, control the first heat exchanger fin group of conducting and medium circulation pipeline, block the second heat exchanger fin group and refrigerant
The connection of circulation line；
S204, judge whether complete in the defrosting of the first heat exchanger fin group, if it is, step S205 is performed, if it is not, then protecting
The on off operating mode for holding S203 is constant, and repeats above-mentioned deterministic process；
S205, control block the connection of the first heat exchanger fin group and medium circulation pipeline, and the second heat exchanger fin group and refrigerant is connected
The connection of circulation line；
Until the defrosting of the second heat exchanger fin group is completed, air-conditioning exits defrosting mode, back switches to heating mode operation.
In an embodiment of the present invention, default Defrost operation condition in the deterministic process of step S201, including：
Receive the control instruction of operation of air conditioner defrosting mode input by user；Alternatively,
Outdoor environment temperature is less than set temperature threshold value.
In an embodiment of the present invention, a heat exchanger fin of air-conditioning is mounted on the first Room being connected with medium circulation pipeline
Outer heat exchange branch, the second heat exchanger fin are mounted on the second outdoor heat exchange branch being connected with medium circulation pipeline, and the first outdoor is changed
Hot branch and the second outdoor heat exchange branch circuit parallel connection, wherein, the first outdoor heat exchange branch road is equipped with the first control valve, is changed outside second Room
Hot branch road is equipped with the second control valve；
Therefore, the connection of the first heat exchanger fin group of conducting and medium circulation pipeline is controlled in step S203, blocks the second heat exchange
The connection of piece group and medium circulation pipeline, including：The first control valve of the first outdoor heat exchange branch is opened in control, and is controlled and closed
Second control valve of the second outdoor heat exchange branch；
Control blocks the connection of the first heat exchanger fin group and medium circulation pipeline in step S205, the second heat exchanger fin group of conducting with
The connection of medium circulation pipeline, including：The first control valve of the first outdoor heat exchange branch is closed in control, and is controlled and opened second Room
Second control valve of outer heat exchange branch.
In in an embodiment of the present invention, air-conditioning further includes to control refrigerant in the four-way of the flow direction of medium circulation pipeline
Valve, four-way valve have the exhaust outlet of compressor is made to be connected with outdoor heat exchanger, the first valve that air entry is connected with indoor heat exchanger
Position and the exhaust outlet of compressor is made to be connected with indoor heat exchanger, the second valve position that air entry is connected with outdoor heat exchanger；
Therefore, operation of air conditioner defrosting mode is controlled in step S202, including：Control four-way valve is switched in the first valve position
State.
In an embodiment of the present invention, judge that the step of whether defrosting of the first heat exchanger fin group is completed also is wrapped in step S204
It includes：
Obtain the cumulative time of operation of air conditioner defrosting mode；
When the cumulative time reaching preset time threshold, then judge that the defrosting of the first heat exchanger fin group is completed.
It should be understood that the invention is not limited in the flow and structure that are described above and are shown in the drawings,
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is only limited by appended claim
System.
Claims (10)
1. a kind of air-conditioning, which is characterized in that the outdoor heat exchanger of the air-conditioning includes at least one superposed first
Heat exchanger fin group and at least one the second heat exchanger fin group positioned at lower part, the first heat exchanger fin group and the second heat exchanger fin group respectively with
The medium circulation pipeline connection of the air-conditioning；The air-conditioning further includes controller, and the controller is used for：
Judge whether to meet preset Defrost operation condition；
If it is satisfied, then control operation of air conditioner defrosting mode, wherein, when being run with the defrosting mode, control conducting first
The connection of heat exchanger fin group and the medium circulation pipeline blocks the second heat exchanger fin group and the medium circulation pipeline
Connection；After the defrosting of the first heat exchanger fin group is completed, control blocks the connection of the first heat exchanger fin group and the medium circulation pipeline,
The connection of the second heat exchanger fin group and the medium circulation pipeline is connected.
2. air-conditioning according to claim 1, which is characterized in that the preset Defrost operation condition, including：
Receive the control instruction of operation of air conditioner defrosting mode input by user；Alternatively,
Outdoor environment temperature is less than set temperature threshold value.
3. air-conditioning according to claim 1, which is characterized in that first heat exchanger fin is mounted on and the refrigerant circulation pipe
The first outdoor heat exchange branch that road is connected, second heat exchanger fin are mounted on second to be connected with the medium circulation pipeline
Outdoor heat exchange branch, the first outdoor heat exchange branch and the second outdoor heat exchange branch circuit parallel connection, wherein, described first is outdoor
The branch that exchanges heat road is equipped with the first control valve, and the second outdoor heat exchange branch road is equipped with the second control valve；
The controller is specifically used for：
First control valve of the first outdoor heat exchange branch is opened in control, and is controlled and closed the second outdoor heat exchange branch
Second control valve on road；And
First control valve of the first outdoor heat exchange branch is closed in control, and is controlled and opened the second outdoor heat exchange branch
Second control valve on road.
4. air-conditioning according to claim 1, which is characterized in that the air-conditioning further includes to control refrigerant in the refrigerant
The four-way valve of the flow direction of circulation line, the four-way valve, which has, makes the exhaust outlet of compressor connect, inhale with the outdoor heat exchanger
The the first valve position and the exhaust outlet of compressor is made to be connected with the indoor heat exchanger, air-breathing that gas port is connected with indoor heat exchanger
The second valve position that mouth is connected with the outdoor heat exchanger；
The controller is specifically used for：
Control four-way valve switches to the state in the first valve position.
5. air-conditioning according to claim 1, which is characterized in that the controller is additionally operable to：
Obtain the cumulative time of defrosting mode described in the operation of air conditioner；
When the cumulative time reaching preset time threshold, then judge that the first heat exchanger fin group defrosting is completed.
6. a kind of air-conditioner defrosting control method, which is characterized in that the outdoor heat exchanger of the air-conditioning includes at least one positioned at upper
The first heat exchanger fin group in portion and at least one the second heat exchanger fin group positioned at lower part, the first heat exchanger fin group and the second heat exchanger fin
Medium circulation pipeline of the group respectively with the air-conditioning connects；The control method includes：
Judge whether to meet preset Defrost operation condition；
If it is satisfied, then control operation of air conditioner defrosting mode, wherein, when being run with the defrosting mode, control conducting first
The connection of heat exchanger fin group and the medium circulation pipeline blocks the second heat exchanger fin group and the medium circulation pipeline
Connection；After the defrosting of the first heat exchanger fin group is completed, control blocks the connection of the first heat exchanger fin group and the medium circulation pipeline,
The connection of the second heat exchanger fin group and the medium circulation pipeline is connected.
7. control method according to claim 6, which is characterized in that the preset Defrost operation condition, including：
Receive the control instruction of operation of air conditioner defrosting mode input by user；Alternatively,
Outdoor environment temperature is less than set temperature threshold value.
8. control method according to claim 6, which is characterized in that first heat exchanger fin is mounted on to follow with the refrigerant
The first outdoor heat exchange branch that endless tube road is connected, second heat exchanger fin are mounted on what is be connected with the medium circulation pipeline
Second outdoor heat exchange branch, the first outdoor heat exchange branch and the second outdoor heat exchange branch circuit parallel connection, wherein, described first
Outdoor heat exchange branch road is equipped with the first control valve, and the second outdoor heat exchange branch road is equipped with the second control valve；
The control first heat exchanger fin group of conducting and the connection of the medium circulation pipeline, block the second heat exchanger fin group and institute
The connection of the medium circulation pipeline is stated, including：
First control valve of the first outdoor heat exchange branch is opened in control, and is controlled and closed the second outdoor heat exchange branch
Second control valve on road；
The control blocks the connection of the first heat exchanger fin group and the medium circulation pipeline, and the second heat exchanger fin group and institute is connected
The connection of the medium circulation pipeline is stated, including：
First control valve of the first outdoor heat exchange branch is closed in control, and is controlled and opened the second outdoor heat exchange branch
Second control valve on road.
9. control method according to claim 6, which is characterized in that the air-conditioning further includes to control refrigerant described
There is the exhaust outlet for making compressor and the outdoor heat exchanger to connect for the four-way valve of the flow direction of medium circulation pipeline, the four-way valve
The first valve position that logical, air entry is connected with indoor heat exchanger and the exhaust outlet of compressor is made to be connected with the indoor heat exchanger,
The second valve position that air entry is connected with the outdoor heat exchanger；
The control operation of air conditioner defrosting mode, including：
Control four-way valve switches to the state in the first valve position.
10. control method according to claim 6, which is characterized in that block the first heat exchanger fin group and institute in the control
The connection of medium circulation pipeline is stated, before the connection that the second heat exchanger fin group and the medium circulation pipeline is connected, institute
Control method is stated to further include：
Obtain the cumulative time of defrosting mode described in the operation of air conditioner；
When the cumulative time reaching preset time threshold, then judge that the first heat exchanger fin group defrosting is completed.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711464037.XA CN108224678A (en) | 2017-12-28 | 2017-12-28 | A kind of air-conditioning and defrosting control method |
| PCT/CN2018/108680 WO2019128356A1 (en) | 2017-12-28 | 2018-09-29 | Air conditioner and defrosting control method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711464037.XA CN108224678A (en) | 2017-12-28 | 2017-12-28 | A kind of air-conditioning and defrosting control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108224678A true CN108224678A (en) | 2018-06-29 |
Family
ID=62645564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711464037.XA Pending CN108224678A (en) | 2017-12-28 | 2017-12-28 | A kind of air-conditioning and defrosting control method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108224678A (en) |
| WO (1) | WO2019128356A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109539477A (en) * | 2018-10-31 | 2019-03-29 | 青岛海尔空调电子有限公司 | Multi-online air-conditioning system and its defrosting control method |
| WO2019128356A1 (en) * | 2017-12-28 | 2019-07-04 | 青岛海尔空调电子有限公司 | Air conditioner and defrosting control method therefor |
| CN110030757A (en) * | 2019-03-26 | 2019-07-19 | 青岛海尔空调电子有限公司 | Multi-gang air-conditioner and its control method |
| CN110332653A (en) * | 2019-07-10 | 2019-10-15 | 珠海格力电器股份有限公司 | Outdoor unit defrosting control method, device and equipment |
| CN110762746A (en) * | 2018-07-10 | 2020-02-07 | 青岛海尔空调电子有限公司 | Air conditioner and defrosting control method thereof |
| CN111397097A (en) * | 2020-04-03 | 2020-07-10 | 青岛海尔空调电子有限公司 | Defrosting control method for air conditioner and air conditioner |
| CN112628887A (en) * | 2020-11-24 | 2021-04-09 | 青岛海尔空调电子有限公司 | Air conditioner and defrosting control method, storage medium and control device thereof |
| CN113357843A (en) * | 2020-03-04 | 2021-09-07 | 青岛海尔空调电子有限公司 | Air conditioning system and defrosting control method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115419965A (en) * | 2022-09-14 | 2022-12-02 | 珠海格力电器股份有限公司 | Air conditioner and control method and device thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09318206A (en) * | 1996-05-28 | 1997-12-12 | Sanyo Electric Co Ltd | Heat pump type air conditioner |
| CN105627432A (en) * | 2015-12-25 | 2016-06-01 | 珠海格力电器股份有限公司 | Air conditioning system and defrosting control method thereof |
| WO2016166801A1 (en) * | 2015-04-13 | 2016-10-20 | 三菱電機株式会社 | Air conditioning device |
| CN106369750A (en) * | 2016-09-08 | 2017-02-01 | 广东美的暖通设备有限公司 | Defrosting control method and defrosting control device of air conditioner and air conditioner |
| CN106871477A (en) * | 2017-03-13 | 2017-06-20 | 合肥美的暖通设备有限公司 | Defroster, source pump and its Defrost method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001059664A (en) * | 1999-08-20 | 2001-03-06 | Fujitsu General Ltd | Air conditioner |
| CN102721149A (en) * | 2012-05-08 | 2012-10-10 | 广东美的制冷设备有限公司 | Air conditioner and control method thereof |
| CN108224678A (en) * | 2017-12-28 | 2018-06-29 | 青岛海尔空调电子有限公司 | A kind of air-conditioning and defrosting control method |
-
2017
- 2017-12-28 CN CN201711464037.XA patent/CN108224678A/en active Pending
-
2018
- 2018-09-29 WO PCT/CN2018/108680 patent/WO2019128356A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09318206A (en) * | 1996-05-28 | 1997-12-12 | Sanyo Electric Co Ltd | Heat pump type air conditioner |
| WO2016166801A1 (en) * | 2015-04-13 | 2016-10-20 | 三菱電機株式会社 | Air conditioning device |
| CN105627432A (en) * | 2015-12-25 | 2016-06-01 | 珠海格力电器股份有限公司 | Air conditioning system and defrosting control method thereof |
| CN106369750A (en) * | 2016-09-08 | 2017-02-01 | 广东美的暖通设备有限公司 | Defrosting control method and defrosting control device of air conditioner and air conditioner |
| CN106871477A (en) * | 2017-03-13 | 2017-06-20 | 合肥美的暖通设备有限公司 | Defroster, source pump and its Defrost method |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019128356A1 (en) * | 2017-12-28 | 2019-07-04 | 青岛海尔空调电子有限公司 | Air conditioner and defrosting control method therefor |
| CN110762746A (en) * | 2018-07-10 | 2020-02-07 | 青岛海尔空调电子有限公司 | Air conditioner and defrosting control method thereof |
| CN110762746B (en) * | 2018-07-10 | 2021-05-25 | 青岛海尔空调电子有限公司 | Air conditioner and defrosting control method thereof |
| CN109539477A (en) * | 2018-10-31 | 2019-03-29 | 青岛海尔空调电子有限公司 | Multi-online air-conditioning system and its defrosting control method |
| CN110030757A (en) * | 2019-03-26 | 2019-07-19 | 青岛海尔空调电子有限公司 | Multi-gang air-conditioner and its control method |
| CN110332653A (en) * | 2019-07-10 | 2019-10-15 | 珠海格力电器股份有限公司 | Outdoor unit defrosting control method, device and equipment |
| CN110332653B (en) * | 2019-07-10 | 2020-07-24 | 珠海格力电器股份有限公司 | Outdoor unit defrosting control method, device and equipment |
| CN113357843A (en) * | 2020-03-04 | 2021-09-07 | 青岛海尔空调电子有限公司 | Air conditioning system and defrosting control method thereof |
| CN111397097A (en) * | 2020-04-03 | 2020-07-10 | 青岛海尔空调电子有限公司 | Defrosting control method for air conditioner and air conditioner |
| CN111397097B (en) * | 2020-04-03 | 2022-12-27 | 青岛海尔空调电子有限公司 | Defrosting control method for air conditioner and air conditioner |
| CN112628887A (en) * | 2020-11-24 | 2021-04-09 | 青岛海尔空调电子有限公司 | Air conditioner and defrosting control method, storage medium and control device thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019128356A1 (en) | 2019-07-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108224678A (en) | A kind of air-conditioning and defrosting control method | |
| CN106016581B (en) | The defrosting control method and device of air conditioner | |
| CN104019531B (en) | The Defrost method of air-conditioner and air-conditioner | |
| CN108413558A (en) | A kind of control method and device of air-conditioning | |
| CN107525221A (en) | A kind of self-cleaning control method and device of air-conditioning | |
| CN105627432A (en) | Air conditioning system and defrosting control method thereof | |
| CN103411340B (en) | Outdoor heat exchange device and Defrost method thereof | |
| CN106871477A (en) | Defroster, source pump and its Defrost method | |
| CN106940071A (en) | Air-conditioning device and its control method | |
| CN112880132B (en) | Method and device for defrosting control of air conditioning system and air conditioning system | |
| CN105698382B (en) | Teat pump boiler and its control method | |
| CN110836504B (en) | Defrosting control method for air conditioner | |
| CN109631234A (en) | A kind of air-conditioner outdoor unit heating defrosting control method and system | |
| CN104197571A (en) | Three-pipe heat recovery multiple-on-line system | |
| CN107178939A (en) | Air conditioner defrosting control method | |
| CN110836503B (en) | Defrosting control method for air conditioner | |
| CN204421439U (en) | Air-conditioner | |
| CN206347662U (en) | Air conditioner and heat pump unit defrosting system and air conditioner and heat pump unit | |
| CN110762746B (en) | Air conditioner and defrosting control method thereof | |
| CN104848578B (en) | The control method of air conditioner and air conditioner | |
| CN110836469B (en) | Defrosting control method for air conditioner | |
| CN206514567U (en) | A kind of air conditioner | |
| CN110836502B (en) | Defrosting control method for air conditioner | |
| CN110836473B (en) | Defrosting control method for air conditioner | |
| CN106440098A (en) | Air-conditioner outdoor unit, defrosting control method and device of air-conditioner outdoor unit and air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180629 |