CN106895619A - The deicing control method of air-conditioner and chassis of outdoor unit of air conditioner - Google Patents
The deicing control method of air-conditioner and chassis of outdoor unit of air conditioner Download PDFInfo
- Publication number
- CN106895619A CN106895619A CN201611087593.5A CN201611087593A CN106895619A CN 106895619 A CN106895619 A CN 106895619A CN 201611087593 A CN201611087593 A CN 201611087593A CN 106895619 A CN106895619 A CN 106895619A
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- CN
- China
- Prior art keywords
- chassis
- electric heater
- heater units
- outdoor unit
- ptc electric
- 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.)
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Classifications
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
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- 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
- F25B47/006—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass for preventing frost
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- 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
- F25B2500/00—Problems to be solved
- F25B2500/06—Damage
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- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/15—Power, e.g. by voltage or current
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- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2106—Temperatures of fresh outdoor air
Abstract
The invention discloses a kind of air-conditioner and the deicing control method of chassis of outdoor unit of air conditioner, air-conditioner includes outdoor unit, outdoor unit includes outdoor heat exchanger and is located at the chassis of outdoor heat exchanger bottom and the PTC electric heater units for being heated to chassis, and deicing control method is comprised the following steps：Environment temperature T residing for detection outdoor unitW, and judge the environment temperature T for detectingWWhether preset temperature T is less than1, if so, starting anti-ice operation；If it is not, not carrying out anti-ice operation；In anti-ice operation, it is powered to PTC electric heater units, the running current I of real-time detection PTC electric heater units, whether the running current I that judgement is detected is less than predetermined current I1, if so, stopping being powered to PTC electric heater units immediately；If it is not, then continue to be powered to PTC electric heater units, until the running current I for detecting is less than predetermined current I1, stop being powered to PTC electric heater units immediately after.Deicing control method according to embodiments of the present invention, deicing effect is good, and good energy-conserving effect, security reliability is high.
Description
Technical field
The present invention relates to art of refrigeration units, more particularly, to the deicing control of a kind of air-conditioner and chassis of outdoor unit of air conditioner
Method processed.
Background technology
After air-conditioner heats the long period at a lower temperature, outdoor heat exchanger can usually occur the phenomenon of frosting, be
Avoid being influenceed due to outdoor heat exchanger frosting the heating effect of air-conditioner, air-conditioner from being generally also provided with defrosting function, that is, lead to
The flow direction for crossing refrigerant in regulation and control air-conditioner makes outdoor heat exchanger heat up, so that it is water that the frost on outdoor heat exchanger can melt
And be dropped on chassis, but because the environment temperature residing for chassis is relatively low, drippage water thereon is easy to build-up ice, ice meeting
Osculum on chassis is blocked and the proper drainage on chassis is influenceed, and frozen by multiple defrost, the ice on chassis is got over
Knot is thicker, so can not only influence the heat transfer effect of air-conditioner, and may also interfere with the normal rotation of outdoor fan, or even also
The damage of flabellum may be caused.
The content of the invention
It is contemplated that at least solving one of technical problem present in prior art.Therefore, the invention reside in proposition one
The deicing control method of kind of chassis of outdoor unit of air conditioner, the deicing effect of the deicing control method is good, good energy-conserving effect.
The present invention also proposes a kind of air-conditioner.
The deicing control method of chassis of outdoor unit of air conditioner according to a first aspect of the present invention, the air-conditioner includes outdoor
Machine, the outdoor unit includes outdoor heat exchanger and is located at the chassis of the outdoor heat exchanger bottom and for adding to the chassis
The PTC electric heater units of heat, the deicing control method is comprised the following steps：Detect the environment temperature residing for the outdoor unit
TW, and judge the environment temperature T for detectingWWhether preset temperature T is less than1, if so, starting anti-ice operation；If it is not, not removed
Ice is operated；In the anti-ice operation, it is powered to the PTC electric heater units, the fortune of PTC electric heater units described in real-time detection
Whether row electric current I, the running current I that judgement is detected are less than predetermined current I1, if so, stopping immediately to the PTC electrical heating
Device is powered；If it is not, then continue to be powered to the PTC electric heater units, until the running current I for detecting is default less than described
Electric current I1, stop being powered to the PTC electric heater units immediately after.
The deicing control method of chassis of outdoor unit of air conditioner of the invention, by selecting PTC electric heater units the bottom of to
Disk is heated, while ice detachment is controlled by detecting the running current of PTC electric heater units, from regardless of whether on chassis
Icing thickness is how, and PTC electric heater units can be stopped after freeze thawing just, loss, so, not only can be true
Deicing effect is protected, energy waste can also be avoided.And, in the system failure, the security performance of PTC electric heater units is very high,
The problems such as catching fire can be effectively prevented from, and the waste of electric energy can be reduced.
In certain embodiments, when the outdoor heat exchanger is carried out defrosting operation, start to detect the environment temperature
TW。
In certain embodiments, in the anti-ice operation, from starting to be powered to the PTC electric heater units, stand
Start to detect the running current I.
In certain embodiments, in the anti-ice operation, first to the PTC electric heater units energization preset duration t, then
Start the detection detection running current I.
In certain embodiments, the span of the preset duration t is 3s~5s.
In certain embodiments, the preset temperature T1Span be 2 DEG C~4 DEG C.
In certain embodiments, the predetermined current I1Span be 0.5A~2A.
Air-conditioner according to a second aspect of the present invention, including：Outdoor unit, the outdoor unit includes outdoor heat exchanger and is located at
The chassis of the outdoor heat exchanger bottom；Temperature-detecting device, the temperature-detecting device is used to detect residing for the outdoor unit
Environment temperature；PTC electric heater units, the PTC electric heater units are used to heat the chassis；Current sensing means, institute
Current sensing means is stated to be connected with the PTC electric heater units and for detecting the running current of the PTC electric heater units；With
Control device, the control device and the temperature-detecting device, the current sensing means and the PTC electric heater units point
The environment temperature and the running current that Xiang Lian and not detected for basis control the energization of the PTC electric heater units
And powering-off state.
Air-conditioner of the invention, by setting PTC electric heater units, can be carried out rationally effectively to the deicing on chassis
Ground control.
In certain embodiments, the PTC electric heater units are arranged on the bottom outside the chassis.
In certain embodiments, there is osculum, the PTC electric heater units set away from the osculum on the chassis
Put.
Additional aspect of the invention and advantage will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by practice of the invention.
Brief description of the drawings
Fig. 1 is the flow chart of the deicing control method of according to embodiments of the present invention one air-conditioner and its bottom plate of outdoor unit；
Fig. 2 is the flow chart of the deicing control method of according to embodiments of the present invention two air-conditioner and its bottom plate of outdoor unit；
Fig. 3 is the resistance-temperature characteristic curve map of PTC electric heater units according to embodiments of the present invention；
Fig. 4 is the structural representation of outdoor unit according to embodiments of the present invention.
Reference：
Outdoor unit 1；Outdoor heat exchanger 11；Chassis 12；Osculum 120；
Temperature-detecting device 2；PTC electric heater units 3；Current sensing means 4；Control device 5.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
It is exemplary to scheme the embodiment of description, it is intended to for explaining the present invention, and be not considered as limiting the invention.
Following disclosure provides many different embodiments or example is used for realizing different structure of the invention.For letter
Change disclosure of the invention, hereinafter the part and setting to specific examples are described.Certainly, they are only merely illustrative, and
Purpose does not lie in the limitation present invention.Additionally, the present invention can in different examples repeat reference numerals and/or letter.It is this heavy
It is again the relation between itself not indicating discussed various embodiments and/or setting for purposes of simplicity and clarity.This
Outward, the invention provides various specific technique and material example, but those of ordinary skill in the art can be appreciated that
The use of the applicable property and/or other materials of other techniques.
Below, the deicing control method on brief description air-conditioner according to embodiments of the present invention and chassis 12.
Specifically, air-conditioner as herein described is split-type air conditioner, i.e., including the outdoor unit 1 located at outdoor and located at room
Interior indoor set, wherein, outdoor unit 1 can include outdoor fan, outdoor heat exchanger 11 and chassis 12, and chassis 12 is placed in outdoor and changes
The bottom of hot device 11 and outdoor fan, indoor set can be including indoor heat exchanger and indoor fan etc..Further, it is described herein
Air-conditioner be with the air-conditioning suitable for cold district (such as Northern Europe, the Northeast) with heat-production functions, that is to say, that work as environment
When temperature is relatively low, air-conditioner can carry out heating work.
However, after air-conditioner heats the long period at a lower temperature, outdoor heat exchanger 11 can usually occur frosting
Phenomenon, in order to avoid influenceing the heating effect of air-conditioner, air-conditioner to be generally also provided with defrost due to the frosting of outdoor heat exchanger 11
Function, i.e., make outdoor heat exchanger 11 heat up, so that on outdoor heat exchanger 11 by regulating and controlling the flow direction of refrigerant in air-conditioner
Frost can melt as water and be dropped on chassis 12, but because the environment temperature residing for chassis 12 is relatively low, drip thereon
Water is easy to build-up ice, and the osculum 120 on chassis 12 can be blocked and influence the proper drainage on chassis 12 by ice, and be passed through excessive
Secondary defrost freezes, and the ice on chassis 12 is tied thicker and thicker, so can not only influence the heat transfer effect of air-conditioner, but also can be competent
The normal rotation of outdoor fan is related to, or even may also result in the damage of flabellum.
It is exactly herein applicant for the ice formation issues on chassis 12, by paying performing creative labour, and removing of proposing
Ice control method.Briefly, air-conditioner according to embodiments of the present invention, by the PCT electricity for being provided for heating chassis 12
Heater 3, and effectively controlled come the anti-ice operation to chassis 12 by detecting the running current of PCT electric heater units 3
System.
Here it is possible to understand, the structure and operation principle of split-type air conditioner, air-conditioner heats operation principle, room
Defrosting operating principle of external heat exchanger 11 etc., be all for those of ordinary skills it is known, it is no longer detailed here
Description.
Below, with reference to Fig. 1-Fig. 4, the deicing controlling party on detailed description air-conditioner according to embodiments of the present invention and chassis 12
Method.
Reference picture 1- Fig. 3, deicing control method according to embodiments of the present invention is comprised the following steps：
First, the environment temperature T residing for detection outdoor unit 1W.Specifically, thermometer, thermometer, temperature can be used
Environment temperature T residing for the detection outdoor unit 1 such as sensorW, that is, detect outdoor temperature TW。
Preferably, can be when defrosting operation be carried out to outdoor heat exchanger 11, the environment temperature residing for detection outdoor unit 1
TW, here it is possible to understand, when air-conditioner carries out defrosting operation to outdoor heat exchanger 11, illustrate that outdoor temperature is relatively low, bottom
There is the risk for freezing in disk 12, at this point it is possible to start to environment temperature TWDetected, to judge whether to need to carry out chassis 12
Deicing is acted.Thus, without at every moment all consider chassis 12 except ice problem, only need to be in the defrost process of outdoor heat exchanger 11
Middle consideration chassis 12 except ice problem, such that it is able to reduce unnecessary energy resource consumption, energy saving.Now, according to this
The air-conditioner of inventive embodiments and its deicing control method on the chassis 12 of outdoor unit 1, it is understood that to be the bottom of outdoor unit 1
The anti-freeze control method of disk 12.
Then, the environment temperature T for detecting is judgedWWhether preset temperature T is less than1, if so, starting anti-ice operation；If it is not,
Do not carry out anti-ice operation.That is, as the environment temperature T for detectingW＜ preset temperatures T1When, illustrate that environment temperature is relatively low, bottom
There is the risk for freezing in disk 12, can now proceed by anti-ice operation；And as the environment temperature T for detectingW>=preset temperature T1
When, illustrating that environment temperature is higher, chassis 12 need not now carry out operation deicing in the absence of the risk for freezing, i.e., do not carry out deicing
Operation, i.e. anti-ice operation terminate.
Alternatively, preset temperature T1Span be 2 DEG C~4 DEG C, that is to say, that preset temperature T12 DEG C~4 can be taken
Arbitrary temp value in DEG C, such as preset temperature T1Could be arranged to 2 DEG C, preset temperature T1It can also be provided that 4 DEG C, preset temperature
Degree T1May be arranged as 3 DEG C etc..Thus, the scope of application of control method according to embodiments of the present invention is wider, control effect
Fruit is more preferably.Certainly, the invention is not restricted to this, preset temperature T1Specific value can also specifically be set according to actual requirement, with
Preferably meet actual requirement.
Anti-ice operation is described in detail below.
After anti-ice operation is started, it is powered to the PTC electric heater units 3 on the chassis 12 of outdoor unit 1.Specifically, it is empty
Adjusting the outdoor unit 1 of device includes chassis 12 and PTC (the Positive Temperature for being heated to chassis 12
The abbreviation of Coefficient, i.e. positive temperature coefficient) electric heater unit 3 (i.e. semistor), add when to PTC electricity
After thermal 3 is powered, PTC electric heater units 3 can be heated to chassis 12, so that the intensificationization ice of chassis 12.
The running current I of real-time detection PTC electric heater units 3.Specifically, can be filled with PTC electrical heating by setting
3 connected current sensing means 4 (such as current detection circuit) are put to detect the running current I of PTC electric heater units 3.Judge
Whether the running current I for detecting is less than predetermined current I1, if so, stopping being powered to PTC electric heater units 3 immediately；If it is not, then
Continue to be powered to PTC electric heater units 3, until the running current I for detecting is less than predetermined current I1, stop immediately after to
PTC electric heater units 3 are powered.
That is, as the running current I ＜ predetermined currents I for detecting1When, illustrate to have changed ice completion, at this point it is possible to
Stopping is heated to chassis 12, you can to stop being powered to PTC electric heater units 3, with saving energy consumption；And when the operation electricity for detecting
Stream I >=predetermined current I1When, illustrate also carrying out ice act, at this time, it may be necessary to chassis 12 continue heat, that is, need continue to
PTC electric heater units 3 are powered, at the same continue real-time detection PTC electric heater units 3 running current I and with predetermined current I1Enter
Row compares, once the running current I for detecting is less than predetermined current I1, then stop being powered to PTC electric heater units 3 immediately.
Thus, it is possible to it is clearly noted not only that the deicing control method of chassis 12 according to embodiments of the present invention, is not to chassis
12 heat time is controlled, but the running current of PTC electric heater units 3 is monitored, while according to PTC electrical heating
The rule (as shown in Figure 3) that the material resistance of device 3 is varied with temperature judges the degree of heat on chassis 12, specifically, works as bottom
Do not exist on disk 12 after ice and melt water, the temperature of ptc material will rise quickly, and its resistance value also rises quickly, running current
It is remarkably decreased, when the running current of PTC electric heater units 3 is less than predetermined current I1When, it can be determined that do not have in chassis 12
The presence of ice and melt water.
However, carrying out deicing control frequently with the heat time on control chassis 12 in correlation technique, its main method is
Control to open and the end time heating on chassis 12, however, the specific aim of this kind of control mode is poor, such as when on chassis 12
When ice is very thick, it is easy to terminate the heat time too early, cause the not thorough enough of ice removing, and when the ice on chassis 12 is very thin,
But it is easy to terminate the heat time too late, causes ice to melt quickly still in heating, waste electric energy.Therefore, compared to this
Prior art, deicing control method according to embodiments of the present invention can be well adapted for different ice conditions, no matter freeze
Thickness how, PTC electric heater units 3 can freeze just melt, be lost in after be stopped, so, not only can be true
Deicing effect is protected, energy waste can also be avoided.
Further, since the special nature of PTC electric heater units 3, even if the interlock circuit of PTC electric heater units 3 (is such as controlled
Circuit processed or detection circuit) break down, PTC electric heater units 3 are constantly in "on" position, due to 3 liters of PTC electric heater units
High its resistance becomes big, and power falls too low to after uniform temperature, so that PTC electric heater units 3 can maintain certain temperature not
Raise again, so, on the one hand can ensure the work safety of air-conditioner, be unlikely to occur to catch fire etc. dangerous, on the other hand also not
Larger waste of energy can be caused.
Alternatively, predetermined current I1Span be 0.5A~2A, that is to say, that predetermined current I1Can take 0.5A~
Arbitrary value in 2A, such as predetermined current I1Could be arranged to 0.5A, predetermined current I1It can also be provided that 2A, predetermined current I1
May be arranged as 1A etc..Thus, it is possible to be effectively prevented from the waste of electric energy.In addition, it is necessary to explanation, even if chassis 12
Do not freeze and draining is smooth, so after PTC electric heater units 3 are energized, (for detecting that PTC electric heater units 3 are transported
Row electric current) current sensing means 4 can the running current of soon detection PTC electric heater units 3 be less than predetermined current I1, so that
PTC electric heater units 3 can be powered off quickly, terminate deicing action, and then can be effectively prevented from waste of energy.
Specifically, the opportunity of the running current I of real-time detection PTC electric heater units 3 have a lot.Referring to Fig. 1 and
Fig. 2, explanation is extended to two kinds of optional opportunitys therein.
Embodiment one, reference picture 1, starts into anti-ice operation, just immediately begin to be powered to PTC electric heater units 3, while
Whether the running current I that the running current I and real-time judge of real-time detection PTC electric heater units 3 are detected is less than predetermined current
I1.As long as the running current I ＜ I for detecting1, just stop being powered to PTC electric heater units 3 immediately, end anti-ice operation, and
Running current I >=the I for detecting1When, continue to be powered to PTC electric heater units 3, and continue real-time detection PTC electrical heating dress
Put 3 running current I and judge the running current I for detecting whether less than predetermined current I1Once, I ＜ I1, just stop immediately
It is powered to PTC electric heater units 3, terminates anti-ice operation.
Embodiment two, reference picture 2, starts into anti-ice operation, is first filled to the PTC electrical heating on the chassis 12 of outdoor unit 1
3 energization preset duration t are put, then starts to detect the running current I of PTC electric heater units 3 again, that is to say, that from beginning to room
In preset duration t from when PTC electric heater units 3 on the chassis 12 of outer machine 1 are powered, not to the operation of PTC electric heater units 3
Electric current I is detected.
Then judge the running current I for detecting whether less than predetermined current I1If, the running current I ＜ I for detecting1
Just stop being powered to PTC electric heater units 3 immediately, terminate anti-ice operation, and in the running current I >=I for detecting1When, just after
Continue and be powered to PTC electric heater units 3, and continue the running current I of real-time detection PTC electric heater units 3 and judge what is detected
Whether running current I is less than predetermined current I1Once, I ＜ I1, just stop being powered to PTC electric heater units 3 immediately, terminate deicing
Operation.
Preferably, the span of preset duration t is 3s~5s, that is to say, that preset duration t can be taken in 3s~5s
Arbitrary value, such as preset duration t could be arranged to 3s, preset duration t it can also be provided that 4s, preset duration t can also be set
It is 5s etc..Thus, the scope of application of control method according to embodiments of the present invention is wider, and control effect is more preferable.Certainly, this hair
Bright not limited to this, the specific value of preset duration t can also specifically set according to actual requirement, be actually subjected to preferably meeting
Ask.
Here, it is necessary to explanation, in above-described embodiment two, is persistently powered default to PTC electric heater units 3 in advance
After duration t, just start to judge whether deicing completes, partly in order to preventing (for detecting that PTC electric heater units 3 run electricity
Stream) current sensing means 4 is interfered and misoperation (i.e. in order to avoid the testing result of current sensing means 4 is not accurate),
On the other hand being ice and draining is also required to the regular hour in itself, unlikely accomplishes in one move, therefore, the control of embodiment two
Method is set to, and after in advance to PTC electric heater units 3 persistently energization preset duration t, just starts to judge whether deicing completes,
So, the precision of control can be improved, and reduces energy waste.
Below, reference picture 4, describe air-conditioner according to embodiments of the present invention.
As shown in figure 4, air-conditioner according to embodiments of the present invention, including：Outdoor unit 1, temperature-detecting device 2, PTC electricity add
Thermal 3, current sensing means 4 and control device 5, wherein, outdoor unit 1 includes outdoor heat exchanger 11 and is located at outdoor heat exchanger
The chassis 12 of 11 bottoms, temperature-detecting device 2 is used to detect the environment temperature residing for outdoor unit 1 that PTC electric heater units 3 to be used for
Chassis 12 is heated, current sensing means 4 is connected and with PTC electric heater units 3 for detecting the operation of PTC electric heater units 3
Electric current, control device 5 is respectively connected with temperature-detecting device 2, current sensing means 4 and PTC electric heater units 3, with according to temperature
The running current that the environment temperature and current sensing means 4 that degree detection means 2 is detected are detected, controls whether to add PTC electricity
Thermal 3 is powered.
Thus, the simple structure of air-conditioner according to embodiments of the present invention, can perform above deicing action, so as to improve
The overall performance of air-conditioner.Further it will be understood that after the technical scheme that those skilled in the art have read the application,
It is clearly understood that composition and the work of temperature-detecting device 2, PTC electric heater units 3, current sensing means 4 and control device 5
Principle, therefore do not repeat here.Additionally, other of air-conditioner according to embodiments of the present invention are constituted and operation principle is
Prior art, does not repeat here.
Preferably, PTC electric heater units 3 can be arranged on the bottom outside chassis 12.Thus, it is possible to avoid PTC electrical heating
Device 3 ducks in drink and the problem of short circuit occurs, and improves the reliability of air-conditioner work.Further, when tool on chassis 12
When having osculum 120, chassis 12 easily can discharge melt water, now, in order to avoid the water of the discharge of chassis 12 is to PTC electricity
Heater 3 is interfered, and PTC electric heater units 3 can be set away from osculum 120, so as to improve PTC electric heater units
3 functional reliability.
Certainly, the invention is not restricted to this, in other embodiments of the invention, when on PTC electric heater units 3 have waterproof
During cover film, PTC electric heater units 3 can also be located in chassis 12.In addition, osculum 120, example can be not provided with chassis 12
Drinking-water pipe and suction pump can be such as set, and the water in chassis 12 is taken away recycling by the way of drawing water.
Following step can be included according to a control method for the deicing of the chassis of the air-conditioner of specific embodiment 12 of the invention
Suddenly, first, when air-conditioner carries out defrosting operation, using the environment temperature T residing for the detection outdoor unit 1 of temperature-detecting device 2W,
And judge TWWhether preset temperature T is less than1If, then it is assumed that there is the danger for freezing, the control air-conditioner of control device 5 in chassis 12
Start anti-ice operation；If not, then it is assumed that terminate deicing behaviour in the absence of the danger for freezing, the control air-conditioner of control device 5 in chassis 12
Make.
Wherein, anti-ice operation is that control device 5 controls power supply to the energization preset duration t of PTC electric heater units 3, so that
PTC electric heater units 3 heat up and chassis 12 are heated, after energization preset duration t, by the real-time detection PTC of current sensing means 4
The running current I of electric heater unit 3, if being less than predetermined current I in the running current I of preset duration t1, control device 5
Control power supply stops being powered to PTC electric heater units 3, so that air-conditioner terminates anti-ice operation；And in the fortune of preset duration t
Row electric current I is more than or equal to predetermined current I1, then control device 5 control power supply continue to be powered to PTC electric heater units 3, until electric
The running current I that flow detection device 4 is detected is less than predetermined current I1, then control device 5 control power supply stop to PTC electrical heating
Device 3 is powered, so that air-conditioner terminates anti-ice operation.
In sum, air-conditioner according to embodiments of the present invention, by setting PTC electric heater units 3, and is arranged in
The bottom on chassis 12, using ptc material when less than Curie temperature resistance change it is slow, more than Curie temperature when resistance drastically
The characteristic of rising, the ice detachment to chassis 12 is rationally and effectively controlled.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outward ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or
Position relationship, is for only for ease of the description present invention and simplifies description, must rather than the device or element for indicating or imply meaning
With specific orientation, with specific azimuth configuration and operation, therefore must be not considered as limiting the invention.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integrally；Can be that machinery connects
Connect, or electrically connect, can also be communication；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be with
Be two element internals connection or two interaction relationships of element.For the ordinary skill in the art, may be used
To understand above-mentioned term concrete meaning in the present invention as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be with
It is the first and second feature directly contacts, or the first and second features are by intermediary mediate contact.And, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the invention or example.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be with office
Combined in an appropriate manner in one or more embodiments or example.Additionally, in the case of not conflicting, the skill of this area
Art personnel can be tied the feature of the different embodiments or example described in this specification and different embodiments or example
Close and combine.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
Can these embodiments be carried out with various changes, modification, replacement and modification in the case of departing from principle of the invention and objective, this
The scope of invention is limited by claim and its equivalent.
Claims (10)
1. a kind of deicing control method of chassis of outdoor unit of air conditioner, it is characterised in that the air-conditioner includes outdoor unit, described
Outdoor unit includes outdoor heat exchanger and is located at the chassis of the outdoor heat exchanger bottom and the PTC for being heated to the chassis
Electric heater unit, the deicing control method is comprised the following steps：
Detect the environment temperature T residing for the outdoor unitW, and judge the environment temperature T for detectingWWhether preset temperature T is less than1,
If so, starting anti-ice operation；If it is not, not carrying out anti-ice operation；
In the anti-ice operation, it is powered to the PTC electric heater units, the operation of PTC electric heater units described in real-time detection
Whether electric current I, the running current I that judgement is detected are less than predetermined current I1, if so, stopping being filled to the PTC electrical heating immediately
Put energization；If it is not, then continue to be powered to the PTC electric heater units, until the running current I for detecting is less than the default electricity
Stream I1, stop being powered to the PTC electric heater units immediately after.
2. the deicing control method of chassis of outdoor unit of air conditioner according to claim 1, it is characterised in that to the room
When external heat exchanger carries out defrosting operation, start to detect the environment temperature TW。
3. the deicing control method of chassis of outdoor unit of air conditioner according to claim 1, it is characterised in that in the deicing
In operation, from starting to be powered to the PTC electric heater units, immediately begin to detect the running current I.
4. the deicing control method of chassis of outdoor unit of air conditioner according to claim 1, it is characterised in that in the deicing
In operation, first to the PTC electric heater units energization preset duration t, then start the detection detection running current I.
5. the deicing control method of chassis of outdoor unit of air conditioner according to claim 4, it is characterised in that when described default
The span of t long is 3s~5s.
6. the deicing control method of the chassis of outdoor unit of air conditioner according to any one of claim 1-5, it is characterised in that
The preset temperature T1Span be 2 DEG C~4 DEG C.
7. the deicing control method of the chassis of outdoor unit of air conditioner according to any one of claim 1-5, it is characterised in that
The predetermined current I1Span be 0.5A~2A.
8. a kind of air-conditioner, it is characterised in that including：
Outdoor unit, the outdoor unit includes outdoor heat exchanger and is located at the chassis of the outdoor heat exchanger bottom；
Temperature-detecting device, the temperature-detecting device is used to detect the environment temperature residing for the outdoor unit；
PTC electric heater units, the PTC electric heater units are used to heat the chassis；
Current sensing means, the current sensing means is connected and with the PTC electric heater units for detecting that the PTC electricity adds
The running current of thermal；With
Control device, the control device is filled with the temperature-detecting device, the current sensing means and the PTC electrical heating
Put and be respectively connected with and for controlling the PTC electric heater units according to the environment temperature and the running current that detect
It is powered and powering-off state.
9. air-conditioner according to claim 8, it is characterised in that the PTC electric heater units are arranged on outside the chassis
Bottom.
10. air-conditioner according to claim 9, it is characterised in that there is osculum on the chassis, the PTC electricity plus
Thermal is set away from the osculum.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611087593.5A CN106895619A (en) | 2016-11-30 | 2016-11-30 | The deicing control method of air-conditioner and chassis of outdoor unit of air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201611087593.5A CN106895619A (en) | 2016-11-30 | 2016-11-30 | The deicing control method of air-conditioner and chassis of outdoor unit of air conditioner |
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| CN106895619A true CN106895619A (en) | 2017-06-27 |
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|---|---|---|---|
| CN201611087593.5A Pending CN106895619A (en) | 2016-11-30 | 2016-11-30 | The deicing control method of air-conditioner and chassis of outdoor unit of air conditioner |
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| CN107388416A (en) * | 2017-07-14 | 2017-11-24 | 珠海格力电器股份有限公司 | Air-conditioner outdoor unit and its control method |
| CN109237734A (en) * | 2018-08-31 | 2019-01-18 | 青岛海尔空调电子有限公司 | A kind of air conditioner outdoor unit chassis method for heating and controlling |
| CN110094905A (en) * | 2019-04-23 | 2019-08-06 | 广东海悟科技有限公司 | The control method of the deicer of net for air-source heat pump units and the unit |
| CN110440415A (en) * | 2019-08-21 | 2019-11-12 | 珠海格力电器股份有限公司 | Air-conditioning and its defrosting control method and device, computer readable storage medium |
| CN110762758A (en) * | 2019-11-07 | 2020-02-07 | 宁波奥克斯电气股份有限公司 | Defrosting control method and device of air conditioner and air conditioner |
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| CN113432238A (en) * | 2021-06-24 | 2021-09-24 | Tcl空调器(中山)有限公司 | Fire detection system and air conditioner |
| CN113483407A (en) * | 2021-05-26 | 2021-10-08 | 海信（山东）空调有限公司 | Control method, device and system of PTC electric heater and air conditioner |
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| CN107388416A (en) * | 2017-07-14 | 2017-11-24 | 珠海格力电器股份有限公司 | Air-conditioner outdoor unit and its control method |
| CN109237734A (en) * | 2018-08-31 | 2019-01-18 | 青岛海尔空调电子有限公司 | A kind of air conditioner outdoor unit chassis method for heating and controlling |
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| CN110762758A (en) * | 2019-11-07 | 2020-02-07 | 宁波奥克斯电气股份有限公司 | Defrosting control method and device of air conditioner and air conditioner |
| CN110762758B (en) * | 2019-11-07 | 2021-08-06 | 宁波奥克斯电气股份有限公司 | Defrosting control method and device of air conditioner and air conditioner |
| CN113483407A (en) * | 2021-05-26 | 2021-10-08 | 海信（山东）空调有限公司 | Control method, device and system of PTC electric heater and air conditioner |
| CN113432238A (en) * | 2021-06-24 | 2021-09-24 | Tcl空调器(中山)有限公司 | Fire detection system and air conditioner |
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Application publication date: 20170627 |