CN103851752B - A kind of air-conditioner and control method thereof - Google Patents
A kind of air-conditioner and control method thereof Download PDFInfo
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- CN103851752B CN103851752B CN201210510205.5A CN201210510205A CN103851752B CN 103851752 B CN103851752 B CN 103851752B CN 201210510205 A CN201210510205 A CN 201210510205A CN 103851752 B CN103851752 B CN 103851752B
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Abstract
The open a kind of air-conditioner of the present invention, comprising: compressor；Indoor heat exchanger and outdoor heat exchanger；Refrigerant heater, refrigerant heater is connected in series between indoor heat exchanger and outdoor heat exchanger；Throttling arrangement；Temperature inductor, temperature inductor is disposed in the outdoor on heat exchanger, for starting the evaporating temperature of sensing chamber's external heat exchanger after air-conditioner heats；Controller, controller is connected with temperature inductor, for judging the evaporating temperature of outdoor heat exchanger, and evaporating temperature less than or equal to the first preset temperature time open refrigerant heater so that coolant is heated, and evaporating temperature more than or equal to the second preset temperature time close refrigerant heater.This air-conditioner can utilize heating to coolant control process to realize the defrosting that do not commutates of air-conditioning, and defrost while indoor heat exchanger can continue heat supply, it is ensured that the comfortableness in room, and simple in construction, reliable.Invention additionally discloses the control method of a kind of air-conditioner with coolant heating function.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly to a kind of air-conditioner with coolant heating function
Control method and a kind of air-conditioner with coolant heating function.
Background technology
There is the air conditioner (hereinafter referred to as air-conditioning) of heat pump when using under worst cold case,
After running a period of time, the meeting frosting of outer machine heat exchanger, increase thermal resistance and windage, be unfavorable for heat exchange.
In order to make air-conditioning properly functioning, generally require to remove the frost of outer machine and melt.
Existing air-conditioned main Defrost mode is switching cross valve, carries out kind of refrigeration cycle.Such defrosting
Although the frost on heat exchanger can be removed clean by mode, but during defrosting, indoor set is
Out of service, it is impossible to enough to room continuous heat supply.This is greatly lowered room temperature, reduces
, there is certain drawback in the comfort level in room.
Existing a kind of Defrost method using hot-gas bypass and coolant heating to combine, is increased by more
Two bypass lines, are placed on heater wherein on one side in access tube, heater and outdoor heat exchanger
Not in same stream, control respectively to carry out defrost.Although the method also is able to realize not commutation
Frost, and the lasting heat supply of indoor set, but structure is loaded down with trivial details, controls process complicated, and actual operation is the strongest.
Summary of the invention
The purpose of the present invention is intended at least solve one of above-mentioned technological deficiency.
To this end, it is an object of the invention to propose a kind of air-conditioner with coolant heating function and
Plant the control method of the air-conditioner with coolant heating function, it is possible to utilize to the control of coolant heating
Journey realizes the defrosting that do not commutates of air-conditioning, and indoor heat exchanger can continue heat supply while defrosting,
Ensure the comfortableness in room, and structure and the process of control are simply, reliable.
For reaching above-mentioned purpose, a kind of air-conditioner that the embodiment of first aspect present invention proposes, including:
Compressor；Indoor heat exchanger and outdoor heat exchanger；Refrigerant heater, the series connection of described refrigerant heater is even
It is connected between described indoor heat exchanger and described outdoor heat exchanger；Throttling arrangement；Temperature inductor, institute
State temperature inductor to be arranged on described outdoor heat exchanger, for heating at the described air-conditioner of startup
The evaporating temperature of the described outdoor heat exchanger of rear detection；Controller, described controller and described temperature sense
Device is connected, for judging the evaporating temperature of described outdoor heat exchanger that described temperature inductor detects, and
The heating of described coolant is opened when the evaporating temperature of described outdoor heat exchanger is less than or equal to the first preset temperature
Device is to heat coolant and pre-more than or equal to second in the evaporating temperature of described outdoor heat exchanger
If closing described refrigerant heater during temperature, wherein, described second preset temperature is first pre-more than described
If temperature.
Air-conditioner according to embodiments of the present invention, is controlled by the evaporating temperature of sensing chamber's external heat exchanger
Coolant is heated to realize the defrosting that do not commutates of air-conditioner by refrigerant heater, not only can be by outdoor
The frosting of heat exchanger is removed, and indoor heat exchanger can continue heat supply while defrosting, it is ensured that
The comfortableness in room.Additionally, this air conditioner structure is simple, reliable, meet the life need of people
Want.
In one embodiment of the invention, described temperature inductor is for when described air conditioner heat-production
Between arrive the first Preset Time after the evaporating temperature of described outdoor heat exchanger is detected.
In one embodiment of the invention, described compressor is frequency-changeable compressor.
Wherein, when starting described air-conditioner and heating, described compressor runs with first frequency, and
After opening described refrigerant heater, described compressor runs with second frequency, wherein, and described second frequency
Rate is less than or equal to described first frequency.
After opening refrigerant heater, the frequency of compressor is reduced and runs, it is to avoid evaporating temperature is too high,
Compressor horsepower is excessive and breaks down.
In one embodiment of the invention, described controller is additionally operable to the steaming at described outdoor heat exchanger
Send out temperature more than or equal to described second preset temperature and to control described coolant after keeping the second Preset Time and add
Hot device cuts out.
In an example of the present invention, described first preset temperature can be-10 to 1 DEG C, described
One frequency can be 50Hz to 150Hz, and described second preset temperature can be 1 to 5 DEG C, described
Two frequencies can be 4Hz to 50Hz.
For reaching above-mentioned purpose, a kind of above-mentioned air-conditioner that the embodiment of second aspect present invention proposes
Control method, comprise the steps:
S1, starts described air-conditioner and heats；
S2, described temperature inductor detects the evaporating temperature of described outdoor heat exchanger；
S3, the evaporating temperature of the described outdoor heat exchanger that described temperature inductor is detected by described controller
Judge, and open when the evaporating temperature of described outdoor heat exchanger is less than or equal to the first preset temperature
Described refrigerant heater is to heat coolant；With
S4, described controller is more than or equal to the second preset temperature in the evaporating temperature of described outdoor heat exchanger
Time close described refrigerant heater, wherein, described second preset temperature is more than described first preset temperature.
The control method of air-conditioner according to embodiments of the present invention, by controlling refrigerant heater to coolant
Carry out heating to realize the defrosting that do not commutates of air-conditioning, not only the frosting of outdoor heat exchanger can be removed,
And indoor heat exchanger can continue heat supply while defrosting, it is ensured that the comfortableness in room.Additionally,
This control method is simple and reliable, and actual operation is strong, meets the living needs of people.
In one embodiment of the invention, described step S2 is to arrive in the described air conditioner heat-production time
Carry out after first Preset Time.
In one embodiment of the invention, described compressor is frequency-changeable compressor.
Further, the most described compressor runs and in described step S3 with first frequency
Described in compressor with second frequency run, wherein, described second frequency less than or equal to described first frequency
Rate.
After opening refrigerant heater, the frequency of compressor is reduced and runs, it is to avoid evaporating temperature is too high,
Compressor horsepower is excessive to break down.
Further, in step s 4, the evaporating temperature of described outdoor heat exchanger is second pre-more than or equal to described
If temperature also keeps the second Preset Time.
In an example of the present invention, described first preset temperature can be-10 to 1 DEG C, described
One frequency can be 50Hz to 150Hz, and described second preset temperature can be 1 to 5 DEG C, described
Two frequencies can be 4Hz to 50Hz.
Aspect and advantage that the present invention adds will part be given in the following description, and part will be from following
Description in become obvious, or recognized by the practice of the present invention.
Accompanying drawing explanation
Present invention aspect that is above-mentioned and/or that add and advantage are from retouching embodiment below in conjunction with the accompanying drawings
Will be apparent from easy to understand in stating, wherein:
Fig. 1 is the structure stream of the air-conditioner with coolant heating function according to one embodiment of the invention
Cheng Tu；
Fig. 2 is that the square frame of the air-conditioner with coolant heating function according to one embodiment of the invention shows
It is intended to；
Fig. 3 is that the air conditioner heat-production with coolant heating function according to one embodiment of the invention runs
Time refrigerant heater open and the pressure-enthalpy chart that is not turned on；
Fig. 4 is the controlling party of the air-conditioner with coolant heating function according to one embodiment of the invention
The flow chart of method；And
Fig. 5 is the controlling party of the air-conditioner with coolant heating function according to one embodiment of the invention
The particular flow sheet of method.
Reference:
Compressor 1, cross valve 2, outdoor heat exchanger 3, refrigerant heater 4, throttling arrangement 5 and room
Interior heat exchanger 6, controller 7, temperature inductor 8.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, its
In the most same or similar label represent same or similar element or there is same or like merit
The element of energy.The embodiment described below with reference to accompanying drawing is exemplary, is only used for explaining this
Bright, and be not construed as limiting the claims.
Following disclosure provides many different embodiments or example for realizing the different knots of the present invention
Structure.In order to simplify disclosure of the invention, hereinafter parts and setting to specific examples are described.
Certainly, they are the most merely illustrative, and are not intended to limit the present invention.Additionally, the present invention is permissible
Repeat reference numerals and/or letter in different examples.This repetition is to simplify and clearly mesh
, itself do not indicate the relation between discussed various embodiment and/or setting.Additionally, the present invention
The various specific technique provided and the example of material, but those of ordinary skill in the art can anticipate
Know the property of can be applicable to other techniques and/or the use of other materials.It addition, described below first
Feature second feature it " on " structure the first and second features can be included to be formed as directly contact
Embodiment, it is also possible to include the embodiment that other feature is formed between the first and second features,
Such first and second features are not likely to be directly contact.
In describing the invention, it should be noted that unless otherwise prescribed and limit, term " peace
Dress ", should be interpreted broadly " being connected ", " connection ", for example, it may be mechanical connection or be electrically connected
Connect, it is also possible to be the connection of two element internals, can be to be joined directly together, it is also possible to by middle matchmaker
Jie is indirectly connected to, for the ordinary skill in the art, can understand as the case may be on
State the concrete meaning of term.
With reference to explained below and accompanying drawing, it will be clear that these and other aspects of embodiments of the invention.
Describe at these and in accompanying drawing, specifically disclose some particular implementation in embodiments of the invention,
Represent some modes of the principle implementing embodiments of the invention, but it is to be understood that the present invention's
The scope of embodiment is not limited.On the contrary, embodiments of the invention include that falling into attached right wants
Seek all changes, amendment and the equivalent in the range of the spirit of book and intension.
Describe the one proposed according to embodiments of the present invention with reference to the accompanying drawings and there is coolant heating function
The control method of air-conditioner and a kind of air-conditioner with coolant heating function.
Fig. 1 is the structure stream of the air-conditioner with coolant heating function that one embodiment of the invention proposes
Cheng Tu.As it is shown in figure 1, this air device includes compressor 1, cross valve 2, outdoor heat exchanger 3, cold
Matchmaker's heater 4, throttling arrangement 5 and indoor heat exchanger 6.Wherein, refrigerant heater 4 is connected in series in
Between indoor heat exchanger 6 and outdoor heat exchanger 3, specifically, throttling arrangement 5 and room it are connected in series in
Between external heat exchanger 3.
When starting air-conditioner and heating, the coolant flow direction in air-conditioner is such that compressor
1 → cross valve, 2 → indoor heat exchanger, 6 → throttling arrangement, 5 → refrigerant heater, 4 → outdoor heat exchanger 3 →
Compressor 1.Wherein, in indoor heat exchanger 6, the external heat release of coolant, namely give room heat supply.
In one embodiment of the invention, as in figure 2 it is shown, this air-conditioner also includes controller 7 He
Temperature inductor 8.Wherein, temperature inductor 8 is disposed in the outdoor on heat exchanger 3, for starting
Air-conditioner carries out heating the evaporating temperature of rear sensing chamber external heat exchanger 3.Controller 7 and temperature inductor
8 are connected, and controller 7 judges what temperature inductor 8 detected after heating at startup air-conditioner
The evaporating temperature of outdoor heat exchanger 3, and in evaporating temperature T3 of outdoor heat exchanger 3 less than or equal to first
During preset temperature t1, unlatching refrigerant heater 4 is to heat coolant, and at outdoor heat exchanger 3
Evaporating temperature T3 more than or equal to the second preset temperature t2 time close refrigerant heater 4, wherein, second
Preset temperature t2 is more than the first preset temperature t1.Preferably, in a concrete example of the present invention,
First preset temperature can be-10 to 1 DEG C, and the second preset temperature can be 1 to 5 DEG C.
In an embodiment of the present invention, temperature inductor 6 is for arriving first in the air conditioner heat-production time
After Preset Time m1, the evaporating temperature to outdoor heat exchanger 3 detects.Wherein it is preferred to, the
One Preset Time can be 3 to 20 minutes.
In one embodiment of the invention, compressor 1 is frequency-changeable compressor.Wherein, sky is being started
When adjusting device to heat, compressor 1 runs with first frequency h1, and presses after opening refrigerant heater 4
Contracting machine 1 runs with second frequency h2, and wherein, second frequency h2 is less than first frequency h1.Specifically,
First frequency can be 50Hz to 150Hz, and second frequency can be 4Hz to 50Hz.
So, by the frequency of compressor 1 being reduced operation after opening refrigerant heater 4, it is to avoid
Evaporating temperature is too high, and compressor horsepower is excessive and breaks down.
In one embodiment of the invention, controller 7 is additionally operable to the evaporation temperature at outdoor heat exchanger 3
Degree controls refrigerant heater 4 after being more than or equal to the second preset temperature t2 and keeping the second Preset Time m2
Close.Wherein it is preferred to, the second Preset Time can be 0.5 to 10 minute.
Thus, in an embodiment of the present invention, when starting air-conditioner and heating, compressor 1
Run with first frequency h1.When start heats after time cumulation reaches m1 minute such as 10 minutes,
Temperature inductor 6 starts evaporating temperature T3 of sensing chamber's external heat exchanger 3, and controller 7 starts to judge temperature
Evaporating temperature T3 of the outdoor heat exchanger 3 of degree induction apparatus 6 detection.If the evaporation of outdoor heat exchanger 3
Temperature T3 is less than or equal to t1 such as-5 DEG C, then control refrigerant heater 4 and open, simultaneously by compressor 1
Frequency be reduced to second frequency h1 such as 30Hz run.After refrigerant heater 4 is opened, to coolant
Carry out heat temperature raising, make evaporating temperature T3 of outdoor heat exchanger 3 start to raise, and outdoor heat exchanger
Frost layer on 3 is melted.When temperature T3 of outdoor heat exchanger 3 is increased to more than or equal to t2 such as 3 DEG C,
And maintaining the time of m2 minute such as 5 minutes, controller 7 controls to cut out refrigerant heater 4,
And the frequency of compressor 1 is recalled to h1 such as 100Hz operation.Now first defrosting cycle terminates,
Enter second defrosting cycle.
Wherein, when refrigerant heater 4 is not turned on, in outdoor heat exchanger 3, refrigerant evaporation absorbs heat,
Heat is absorbed from external environment condition.When refrigerant heater 4 is opened, coolant is in refrigerant heater 4
Heat absorption, discharges a part of heat for defrosting in outdoor heat exchanger 3 simultaneously.See Fig. 3, coolant
When heater 4 is not turned on, pressure-enthalpy chart corresponds to: 1-2-3-4；When refrigerant heater 4 is opened,
Pressure-enthalpy chart corresponds to: 1 '-2 '-3 '-4 '.
Further, no matter whether outdoor heat exchanger 3 defrosts, and indoor heat exchanger 6 all can keep to room
Interior conveying heat, thus realize ensureing indoor temperature, improve the comfortableness in room.
The air-conditioner with coolant heating function according to embodiments of the present invention, by detection outdoor heat exchange
The evaporating temperature of device 3 controls refrigerant heater 4 and heats coolant to realize not commutating of air-conditioning
Defrosting, not only can remove the frosting of outdoor heat exchanger 3, and indoor heat exchange while defrosting
Device 6 can continue heat supply, it is ensured that the comfortableness in room.Additionally, this air conditioner structure is simple, fortune
Row is reliable, meets the living needs of people.
Fig. 4 is the control method flow chart of the air-conditioner of one embodiment of the invention.Wherein, air-conditioner
For the above-mentioned air-conditioner with coolant heating function.As shown in Figure 4, this control method includes as follows
Step:
S1, starts air-conditioner and heats.
S2, evaporating temperature T3 of temperature inductor sensing chamber external heat exchanger.
S3, evaporating temperature T3 of the outdoor heat exchanger that temperature inductor detects is judged by controller,
And coolant heating is opened when evaporating temperature T3 of outdoor heat exchanger is less than or equal to the first preset temperature t1
Device is to heat coolant.
S4, controller is when evaporating temperature T3 of outdoor heat exchanger is more than or equal to the second preset temperature t2
Closing refrigerant heater, wherein, the second preset temperature t2 is more than the first preset temperature t1.
Preferably, in an example of the present invention, the first preset temperature t1 can be-10 to 1 DEG C,
Second preset temperature t2 can be 1 to 5 DEG C.
In an example of the present invention, compressor is frequency-changeable compressor.
Specifically, in one embodiment of the invention, as it is shown in figure 5, above-mentioned have coolant heating
The air-conditioner of function do not commutate when heating defrosting control method comprise the following steps:
S501, start heating mode runs, and i.e. starts air-conditioner and heats.
S502, the air conditioner heat-production time arrives the first Preset Time such as m1 minute.Wherein, compression
Machine runs with first frequency h1, and adds up to run the first Preset Time such as m1 minute.In the present invention
An example in, the first Preset Time m1 can be 3 to 20 minutes, and first frequency h1 is permissible
For 50Hz to 150Hz.
S503, evaporating temperature T3 of sensing chamber's external heat exchanger.
S504, it is judged that whether evaporating temperature T3 of outdoor heat exchanger is less than or equal to the first preset temperature t1.
If it is, execution next step；If it is not, then return step S502.
S505, opens refrigerant heater, i.e. refrigerant heater and opens heating power, give off heat with cold
Matchmaker carries out heat exchange, improves evaporator refrigerant temperature and pressure frost layer above outdoor heat exchanger to be melted.
S506, compressor runs with second frequency h2.It is to say, the running frequency of compressor by
H1 is reduced to h2 and runs, and to avoid evaporating temperature too high, compressor horsepower is excessive to break down.Its
In, second frequency h2 is less than first frequency h1.In an example of the present invention, second frequency h2
Can be 4Hz to 50Hz.
S507, it is judged that whether evaporating temperature T3 of outdoor heat exchanger is more than or equal to the second preset temperature t2,
And judge whether that the continuous retention time reaches the second Preset Time such as m2 minute.If T3 is more than
In t2, and accumulated running time was more than m2 minute, then perform next step.If it is not, then return
Step S507, proceeds to judge.Wherein, the second Preset Time m2 can be 0.5 to 10 minute.
Or, S508, it is judged that whether the time that compressor adds up to run with second frequency h2 is more than m3
Minute, wherein, m3 is more than m2, can be 12-18 minute.If it is, perform step S509；
If it does not, return step S507.
It is to say, two conditions are respectively as follows: T3 and are more than or equal to t2, and accumulated running time exceedes
M2 minute；The time that compressor adds up to run with second frequency h2 is more than m3 minute.If can not expire
One of them in foot two above condition, then remain in step S507, and cumulative time.
S509, closes refrigerant heater, terminates defrosting process.
The control method of the air-conditioner with coolant heating function according to embodiments of the present invention, by control
Coolant is heated the defrosting that do not commutates realizing air-conditioning by refrigerant heater processed, not only can be by outdoor
The frosting of heat exchanger is removed, and indoor heat exchanger can continue heat supply while defrosting, it is ensured that
The comfortableness in room.Additionally, this control method is simple and reliable, actual operation is strong, meets people's
Living needs.
In flow chart or at this any process described otherwise above or method describe it is understood that
For, represent and include one or more performing for the step that realizes specific logical function or process
The module of code, fragment or the part of instruction, and the scope of the preferred embodiment of the present invention includes
Realization additionally, wherein can not be by order that is shown or that discuss, including according to involved function
By basic mode simultaneously or in the opposite order, performing function, these should be by embodiments of the invention
Person of ordinary skill in the field is understood.
Represent in flow charts or the logic described otherwise above at this and/or step, for example, it is possible to
It is considered as the sequencing list of executable instruction for realizing logic function, may be embodied in and appoint
In what computer-readable medium, for instruction execution system, device or equipment (such as computer based
System, include the system of processor or other can be from instruction execution system, device or equipment instruction fetch
And perform the system of instruction) use, or combine these instruction execution systems, device or equipment and use.
For the purpose of this specification, " computer-readable medium " can be any can comprise, store, communicate,
Propagate or transmission procedure for instruction execution system, device or equipment or combine these instruction execution systems,
Device or equipment and the device that uses.(non-exclusive arranges the more specifically example of computer-readable medium
Table) include following: there is the electrical connection section (electronic installation) of one or more wiring, portable meter
Calculation machine tray salver (magnetic device), random-access memory (ram), read only memory (ROM),
Erasable read only memory (EPROM or flash memory) of editing, fiber device, and portable
Formula compact disc read-only memory (CDROM).It addition, computer-readable medium can even is that can be at it
The paper of the described program of upper printing or other suitable media, because can be such as by paper or other Jie
Matter carries out optical scanning, then carries out editing, interpret or processing with other suitable methods if desired
Electronically obtain described program, be then stored in computer storage.
Should be appreciated that each several part of the present invention can use hardware, software, firmware or combinations thereof
Realize.In the above-described embodiment, multiple steps or method can be with storing in memory and by closing
Software or firmware that suitable instruction execution system performs realize.Such as, if realized with hardware,
As in another embodiment, any one in available following technology well known in the art or they
Combination realize: have and patrol for the discrete of logic gates that data signal is realized logic function
Collect circuit, there is the special IC of suitable combination logic gate circuit, programmable gate array
(PGA), field programmable gate array (FPGA) etc..
Those skilled in the art are appreciated that realize that above-described embodiment method carries whole
Or part steps can be by program and completes to instruct relevant hardware, described program can store
In a kind of computer-readable recording medium, this program upon execution, including the step of embodiment of the method
One or a combination set of.
Additionally, each functional unit in each embodiment of the present invention can be integrated in a processing module
In, it is also possible to it is that unit is individually physically present, it is also possible to two or more unit are integrated in
In one module.Above-mentioned integrated module both can realize to use the form of hardware, it would however also be possible to employ soft
The form of part functional module realizes.If described integrated module realizes with the form of software function module
And during as independent production marketing or use, it is also possible to it is stored in an embodied on computer readable storage and is situated between
In matter.
Storage medium mentioned above can be read only memory, disk or CD etc..
In the description of this specification, reference term " embodiment ", " some embodiments ",
The description of " example ", " concrete example " or " some examples " etc. mean to combine this embodiment or
Specific features, structure, material or the feature that example describes is contained at least one enforcement of the present invention
In example or example.In this manual, the schematic representation to above-mentioned term is not necessarily referring to identical
Embodiment or example.And, the specific features of description, structure, material or feature can be in office
What one or more embodiments or example combine in an appropriate manner.
Although an embodiment of the present invention has been shown and described, for those of ordinary skill in the art
For, it is possible to understand that without departing from the principles and spirit of the present invention can be to these embodiments
Carry out multiple change, revise, replace and modification, the scope of the present invention by claims and etc.
With limiting.
Claims (12)
1. an air-conditioner, it is characterised in that including:
Compressor；
Indoor heat exchanger and outdoor heat exchanger；
Refrigerant heater, described refrigerant heater is connected in series in described indoor heat exchanger and described outdoor
Between heat exchanger；
Throttling arrangement；
Temperature inductor, described temperature inductor is arranged on described outdoor heat exchanger, for starting
Described air-conditioner detects the evaporating temperature of described outdoor heat exchanger after heating；
Controller, described controller is connected with described temperature inductor, is used for judging described temperature sense
The evaporating temperature of the described outdoor heat exchanger of device detection, and little in the evaporating temperature of described outdoor heat exchanger
Described refrigerant heater is opened so that coolant to be heated when equal to the first preset temperature, and in institute
The evaporating temperature stating outdoor heat exchanger is more than or equal to during the second preset temperature close described refrigerant heater,
Wherein, described second preset temperature is more than described first preset temperature.
2. air-conditioner as claimed in claim 1, it is characterised in that described temperature inductor is used for
The evaporating temperature of described outdoor heat exchanger is entered after arriving the first Preset Time by the described air conditioner heat-production time
Row detection.
3. air-conditioner as claimed in claim 1, it is characterised in that described compressor is frequency conversion compression
Machine.
4. air-conditioner as claimed in claim 3, it is characterised in that carry out starting described air-conditioner
When heating, described compressor runs with first frequency, and described compression after opening described refrigerant heater
Machine runs with second frequency, and wherein, described second frequency is less than or equal to described first frequency.
5. air-conditioner as claimed in claim 1, it is characterised in that described controller is additionally operable in institute
The evaporating temperature stating outdoor heat exchanger more than or equal to described second preset temperature and keeps the second Preset Time
The described refrigerant heater of rear control is closed.
6. air-conditioner as claimed in claim 4, it is characterised in that described first preset temperature is-10
To 1 DEG C, described first frequency is 50Hz to 150Hz, and described second preset temperature is 1 to 5 DEG C,
Described second frequency is 4Hz to 50Hz.
7. the control method of the air-conditioner as described in any one of claim 1-6, it is characterised in that
Comprise the steps:
S1, starts described air-conditioner and heats；
S2, described temperature inductor detects the evaporating temperature of described outdoor heat exchanger；
S3, the evaporating temperature of the described outdoor heat exchanger that described temperature inductor is detected by described controller
Judge, and open when the evaporating temperature of described outdoor heat exchanger is less than or equal to the first preset temperature
Described refrigerant heater is to heat coolant；With
S4, described controller is more than or equal to the second preset temperature in the evaporating temperature of described outdoor heat exchanger
Time close described refrigerant heater, wherein, described second preset temperature is more than described first preset temperature.
The control method of air-conditioner the most as claimed in claim 7, it is characterised in that described step
S2 is to carry out after the described air conditioner heat-production time arrives the first Preset Time.
The control method of air-conditioner the most as claimed in claim 7, it is characterised in that described compression
Machine is frequency-changeable compressor.
The control method of air-conditioner the most as claimed in claim 9, it is characterised in that in step
Compressor described in S1 runs with first frequency, and described in described step S3, compressor is with the second frequency
Rate is run, and wherein, described second frequency is less than or equal to described first frequency.
The control method of 11. air-conditioners as claimed in claim 7, it is characterised in that in step
In S4, the evaporating temperature of described outdoor heat exchanger is more than or equal to described second preset temperature and keeps second
Preset Time.
The control method of 12. air-conditioners as claimed in claim 10, it is characterised in that described
One preset temperature is-10 to 1 DEG C, and described first frequency is 50Hz to 150Hz, and described second presets
Temperature is 1 to 5 DEG C, and described second frequency is 4Hz to 50Hz.
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|---|---|---|---|---|
| CN103542459B (en) * | 2013-11-08 | 2015-11-18 | 海信（山东）空调有限公司 | Defrost method when cold-heat frequency-conversion air conditioner and heating operation |
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| CN105423589B (en) * | 2015-11-20 | 2019-04-02 | Tcl空调器(中山)有限公司 | Air conditioner and its control method |
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| CN1888674A (en) * | 2005-06-27 | 2007-01-03 | 乐金电子(天津)电器有限公司 | Air conditioner equiped with auxiliary heater and controlling method thereof |
| CN1892131A (en) * | 2005-07-07 | 2007-01-10 | 乐金电子(天津)电器有限公司 | Air-conditioner and its defrosting control method |
| CN101713141B (en) * | 2008-09-30 | 2011-12-07 | 三洋电机株式会社 | Heat pump type drying machine |
| CN101749905A (en) * | 2008-12-05 | 2010-06-23 | 乐金电子(天津)电器有限公司 | Air-conditioner continuous heat-supply and defrost control method |
| CN102401519B (en) * | 2010-09-16 | 2016-08-10 | 乐金电子(天津)电器有限公司 | The off-premises station of air-conditioner |
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