CN104848578B - The control method of air conditioner and air conditioner - Google Patents
The control method of air conditioner and air conditioner Download PDFInfo
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- CN104848578B CN104848578B CN201510211998.4A CN201510211998A CN104848578B CN 104848578 B CN104848578 B CN 104848578B CN 201510211998 A CN201510211998 A CN 201510211998A CN 104848578 B CN104848578 B CN 104848578B
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- heat exchanger
- air conditioner
- interface
- temperature
- outdoor heat
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Classifications
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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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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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
- F25B47/02—Defrosting cycles
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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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02742—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using two four-way valves
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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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
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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
- F25B2700/2103—Temperatures near a heat exchanger
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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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses the control method of air conditioner and air conditioner.Air conditioner includes：Compressor, compressor have exhaust outlet and gas returning port；First commutation component, the first commutation component have the first valve port to the 4th valve port, and the first valve port connects with one of in the second valve port and the 3rd valve port, and the 4th valve port connects with another in the second valve port and the 3rd valve port；Indoor heat exchanger；Second commutation component, second commutation component has first interface to the 4th interface, first interface connects with one of in second interface and the 3rd interface, 4th interface connects with another in second interface and the 3rd interface, the first throttle element and the first controller being connected in parallel are connected between first interface and the second end of indoor heat exchanger, the 4th interface is connected with the second valve port；First outdoor heat exchanger and the second outdoor heat exchanger.The air conditioner of the present invention, comfortableness of user when using air conditioner heat-production function can be improved to a certain extent.
Description
Technical field
The present invention relates to art of refrigeration units, more particularly, to the control method of a kind of air conditioner and air conditioner.
Background technology
When winter uses air conditioner heat-production, the phenomenon of frosting occurs due to low temperature in the air-conditioner outdoor unit of air conditioner.It is existing
Pointed out in technology, the defrosting to air-conditioner outdoor unit is typically after air conditioner runs a period of time, by the heating mode of air conditioner
Switch to refrigeration mode, indoor heat exchanger is as the heat in evaporator absorption chamber, and outdoor heat exchanger is as condenser with to sky
Outdoor unit radiating is adjusted, so as to realize defrosting, however, the Defrost technology of heat has had a strong impact on that user's is comfortable in this absorption chamber
Property.
The content of the invention
It is contemplated that at least solves one of technical problem in correlation technique to a certain extent.Therefore, the present invention carries
Go out a kind of air conditioner, the air conditioner can improve the comfortableness of user.
The present invention also proposes a kind of control method of air conditioner, for controlling above-mentioned air conditioner.
According to the air conditioner of the present invention, including：Compressor, the compressor have exhaust outlet and gas returning port；First commutation
Component, the first commutation component have the first valve port to the 4th valve port, first valve port and the second valve port and the 3rd valve port
In one of connection, the 4th valve port connects with another in second valve port and the 3rd valve port, described
First valve port is connected with the exhaust outlet, and the 4th valve port is connected with the gas returning port；Indoor heat exchanger, the indoor heat exchange
The first end of device is connected with the 3rd valve port；Second commutation component, the second commutation component have first interface to the 4th
Interface, the first interface connect with one of in second interface and the 3rd interface, the 4th interface and described second
Interface connects with another in the 3rd interface, is connected between the first interface and the second end of the indoor heat exchanger
There are the first throttle element and the first controller being connected in parallel, the 4th interface is connected with second valve port；First is outdoor
Heat exchanger and the second outdoor heat exchanger, the first end of first outdoor heat exchanger are connected with the 3rd interface, and described second
The first end of outdoor heat exchanger is connected with the second interface, outside the second end of first outdoor heat exchanger and the second Room
The second restricting element and second controller being connected in parallel are connected between second end of heat exchanger.
According to the air conditioner of the present invention, by setting the first outdoor heat exchanger and the second outdoor heat exchange in air-conditioner outdoor unit
Device, and the second restricting element and second controller are connected in parallel between the first outdoor heat exchanger and the second outdoor heat exchanger, together
When in coolant loop set second commutation component, indoor heat exchanger can be made in the first outdoor heat exchanger or the second outdoor heat exchange
Continue during device defrost to indoor heating, it is comfortable when using air conditioner heat-production function that this improves user to a certain extent
Property.
According to some embodiments of the present invention, the first commutation component is four-way valve.
According to some embodiments of the present invention, the second commutation component is four-way valve.
In some embodiments of the invention, first controller is configured to be in normally off.
According to some embodiments of the present invention, the second controller is configured to be in normally open.
In some embodiments of the invention, the first throttle element is capillary or electric expansion valve, described second
Restricting element is capillary or electric expansion valve.
According to some embodiments of the present invention, first outdoor heat exchanger and second outdoor heat exchanger are two only
Vertical heat exchange element, or two that first outdoor heat exchanger and second outdoor heat exchanger are a heat exchange element
Point.
According to the control method of the air conditioner of the present invention, the air conditioner is above-mentioned air conditioner, and the control method is such as
Under：
When following either condition meets, the air conditioner is controlled to enter the first self-circulating defrosting pattern, described first
Self-circulating defrosting pattern, second controller are closed, the first outdoor heat exchanger are defrosted：
Condition one, after compressor accumulative operation t1 minutes, the first temperature T1 is less than first predetermined value T11, and first is warm
Degree T1 and the first predetermined difference value BT1 sums are less than or equal to T10, and the 3rd temperature T3 ＞ third predetermined value T33, wherein the first temperature
The temperature that T1 is the first outdoor heat exchanger is spent, second temperature T2 is the temperature of the second outdoor heat exchanger, and the 3rd temperature T3 is air-conditioning
Environment temperature in device outdoor unit, the T10 are that air conditioner heat-production runs and arrives m2 after compressor start continuous service m1 minutes
The minimum value of T1 in minute；
Condition two, after compressor accumulative operation t2 minutes, the first temperature T1 is less than the 4th predetermined value T12, the 3rd temperature
The predetermined value T34 of T3 ＞ the 5th, and continue m3 minutes；
Condition three, after compressor accumulative operation t3 minutes, the first temperature T1 is less than the 6th predetermined value T13, the 3rd temperature
The predetermined value T35 of T3 ＞ the 7th；
When following either condition meets, the air conditioner is controlled to enter the second self-circulating defrosting pattern, described second
Self-circulating defrosting pattern, second controller are closed, the second outdoor heat exchanger are defrosted：
Condition four, after compressor accumulative operation t4 minutes, second temperature T2 is less than the first setting value T21, and second is warm
The settings of degree T2 and second difference BT2 sums are less than or equal to T20, and the setting value T331 of the 3rd temperature T3 ＞ the 3rd, wherein described
T20 is that air conditioner heat-production is run and after compressor start continuous service m1 minutes to the minimum value of the T2 in m2 minutes；
Condition five, after compressor accumulative operation t5 minutes, second temperature T2 is less than the 4th setting value T22, the 3rd temperature
The setting value T341 of T3 ＞ the 5th, and continue m31 minutes；
Condition six, after compressor accumulative operation t6 minutes, second temperature T2 is less than the 6th setting value T23, the 3rd temperature
The setting value T351 of T3 ＞ the 7th；
Wherein when meeting to enter the first self-circulating defrosting pattern and the second self-circulating defrosting pattern simultaneously, the is initially entered
One self-circulating defrosting pattern, after enter back into the second self-circulating defrosting pattern.
The first self-circulating defrosting pattern is run in air conditioner or during the second self-circulating defrosting pattern, when detecting that satisfaction exits
During condition, defrost is exited.
According to the control method of the air conditioner of the present invention, during the defrost of air conditioner, indoor heat exchanger can be held
Continue to indoor radiating, so as to ensure that the lasting heating of indoor set during defrost, this improves user and existed to a certain extent
Using comfortableness during air conditioner heat-production function, while by detecting the temperature of the first outdoor heat exchanger and the second outdoor heat exchanger
Degree, and by it compared with predetermined value to determine whether to be defrosted, can be defrosted according to actual conditions, avoid air-conditioning
Device is defrosted in frostless situation and wastes energy, realizes the purpose of frost defrosting.
According to some embodiments of the present invention, in the first self-circulating defrosting pattern, the exit criteria is：Detect T1
Higher than the first set temperature value, detect T1 higher than the second set temperature value and continue first scheduled time or detection to described
The time that first outdoor heat exchanger is defrosted is more than the first setting time, wherein first set temperature value is more than described the
Two set temperature values；When being defrosted to second outdoor heat exchanger, the exit criteria is：Detect T2 higher than the 3rd setting
Temperature value, T2 is detected higher than the 4th set temperature value and continues second scheduled time or detection to second outdoor heat exchange
The time that device is defrosted is more than the second setting time, wherein the 3rd set temperature value is more than the 4th design temperature
Value.
Brief description of the drawings
Fig. 1 is that the air conditioner according to embodiments of the present invention refrigerant in kind of refrigeration cycle flows to schematic diagram；
Fig. 2 is that air conditioner according to embodiments of the present invention flows to schematic diagram in the refrigerant of heating circulation；
Refrigerant when Fig. 3 is the first outdoor heat exchanger defrosting of air conditioner according to embodiments of the present invention flows to schematic diagram；
Refrigerant when Fig. 4 is the second outdoor heat exchanger defrosting of air conditioner according to embodiments of the present invention flows to schematic diagram；
Control flow schematic diagram when Fig. 5 is the first outdoor heat exchanger defrosting of air conditioner according to embodiments of the present invention；
Control flow schematic diagram when Fig. 6 is the second outdoor heat exchanger defrosting of air conditioner according to embodiments of the present invention.
Reference：
Air conditioner 100；
Compressor 1；Exhaust outlet A；Gas returning port B；
First commutation component 2；First valve port C；Second valve port D；3rd valve port E；4th valve port F；
Second commutation component 3；First interface G；Second interface H；3rd interface I；4th interface J；
Indoor heat exchanger 4；
First throttle element 5；
First controller 6；
First outdoor heat exchanger 7；
Second outdoor heat exchanger 8；
Second restricting element 9；
Second controller 10.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings.Below with reference to
The embodiment of accompanying drawing description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " 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, it is for only for ease of and describes the present invention and simplify description, rather than indicates or imply that signified device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the invention, " multiple " are meant that at least two, such as two, three
It is individual etc., unless otherwise specifically defined.
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 or can communicate each other；Can be joined directly together, can also be indirectly connected by intermediary, can be with
It is connection or the interaction relationship of two elements of two element internals, is limited unless otherwise clear and definite.For this area
For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature
It is that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, 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 and is less than second feature.
Below with reference to the accompanying drawings air conditioner 100 according to embodiments of the present invention is described, can be used for adjusting indoor temperature.
As Figure 1-Figure 4, air conditioner 100 according to embodiments of the present invention can include the commutation component of compressor 1, first
2nd, the second commutation component 3, indoor heat exchanger 4, the first outdoor heat exchanger 7 and the second outdoor heat exchanger 8.
Specifically, compressor 1 has exhaust outlet A and gas returning port B, and refrigerant is entered inside compressor 1 from gas returning port B, warp
Compressor 1 forms the refrigerant of HTHP after compressing, discharged from exhaust outlet A.
First commutation component 2 has the first valve port C to the 4th valve port F, wherein, the first valve port C and the second valve port D and the 3rd
One of connection in valve port E, the 4th valve port F connect with another in the second valve port D and the 3rd valve port E, in other words, when
When first valve port C connects with the second valve port D, the 4th valve port F connects with the 3rd valve port E, when the first valve port C and the 3rd valve port E connects
When logical, the 4th valve port F connects with the second valve port D.In addition, the first valve port C is connected with exhaust outlet A, the 4th valve port F and gas returning port B
It is connected.
Preferably, the first commutation component 2 is four-way valve, when the first commutation component 2 powers off, the first valve port C and the second valve
Mouth D connections, the 4th valve port F connect with the 3rd valve port E, and when the first commutation component 2 is powered, the first valve port C and the 3rd valve port E connect
Logical, the 4th valve port F connects with the second valve port D.But it is understood that the first commutation component 2 can be formed as other elements,
As long as there is the first valve port C to the 4th valve port F and commutation can be realized.
Because the first valve port C of the first commutation component 2 can be with one of them in the second valve port D and the 3rd valve port E even
Connecing to realize commutation connection, the 4th valve port F is connected with another in the second valve port D and the 3rd valve port E to realize commutation connection,
This allows air conditioner 100 to be changed between refrigeration mode and heating mode, it is achieved thereby that the refrigerating function of air conditioner 100
And heat-production functions.
The first end of indoor heat exchanger 4 is connected with the 3rd valve port E, and indoor heat exchanger 4 can be exchanged heat with indoor environment to adjust
Save indoor temperature.
Second commutation component 3 has first interface G to the 4th interface J, wherein, first interface G and second interface H and the 3rd
One of connection in interface I, the 4th interface J connect with another in second interface H and the 3rd interface I, in other words, when
When first interface G connects with second interface H, the 4th interface J connects with the 3rd interface I, when first interface G and the 3rd interface I connects
When logical, the 4th interface J connects with second interface H.
The first throttle element 5 and first being connected in parallel is connected between first interface G and the second end of indoor heat exchanger 4
Controller 6, the 4th interface J are connected with the second valve port D, and first throttle element 5 can be depressured to the coolant throttle in refrigerant flow,
First controller 6 can be used for the break-make for controlling refrigerant flow, for example, when the first controller 6 is opened, first interface G and room
Refrigerant between second end of interior heat exchanger 4 is by the first controller 6, without by first throttle element 5, when the first controller
During 6 closing, the refrigerant between first interface G and the second end of indoor heat exchanger 4 is then by first throttle element 5, without passing through
First controller 6.
Preferably, the second commutation component 3 is four-way valve, and when the second commutation component 3 powers off, first interface G connects with second
Mouth H connections, the 4th interface J connect with the 3rd interface I, and when the second commutation component 3 is powered, first interface G and the 3rd interface I connects
Logical, the 4th interface J connects with second interface H.But it is understood that the second commutation component 3 can be formed as other elements,
As long as there is the first valve port C to the 4th valve port F and commutation can be realized.
The first end of first outdoor heat exchanger 7 is connected with the 3rd interface I, the first end and second of the second outdoor heat exchanger 8
Interface H is connected, and is connected with and is connected in parallel between the second end of the second end of the first outdoor heat exchanger 7 and the second outdoor heat exchanger 8
The second restricting element 9 and second controller 10, second controller 10 can be used for control refrigerant flow in refrigerant break-make, second
Restricting element 9 can be used for being depressured the coolant throttle in refrigerant flow.It is understood that when second controller 10 is opened,
Refrigerant between second end of the first outdoor heat exchanger 7 and the second end of the second outdoor heat exchanger 8 flow through second controller 10 with
The conducting of refrigerant is realized, without passing through the second restricting element 9, when second controller 10 is closed, the of the first outdoor heat exchanger 7
Refrigerant between two ends and the second end of the second outdoor heat exchanger 8 by the second restricting element 9 with reducing pressure by regulating flow, and without the
Two controllers 10, thus, by being connected in the restricting element 9 of second controller 10 and second in parallel first outdoor heat exchanger 7
, can be in order to which air conditioner 100 be respectively to the He of the first outdoor heat exchanger 7 between second end and the second end of the second outdoor heat exchanger 8
Second outdoor heat exchanger 8 is defrosted.
Air conditioner 100 in the embodiment of the present invention is defrosting to the first outdoor heat exchanger 7 and the second outdoor heat exchanger 8 respectively
When, indoor apparatus of air conditioner continues to indoor radiating to adjust indoor temperature, while indoor auxiliary heating device can also be opened, to enter
The indoor heating effect of one step increase, because indoor auxiliary heating device is prior art, herein just without being described in detail.When
So it is understood that in defrosting, if being heated without indoor auxiliary heating device to indoor environment, can also be closed
Close.In the following description, auxiliary heating device is described exemplified by opening in room when to defrost.
For example, as shown in figure 1, when air conditioner 100 is in refrigeration mode, the first valve port C of the first commutation component 2 and the
Two valve port D are connected, and the 4th valve port F connects with the 3rd valve port E, and the first interface G of the second commutation component 3 connects with second interface H,
4th interface J and the 3rd interface I connects, and the first controller 6 is closed, and second controller 10 is in opening, through pressure
The refrigerant for the HTHP that contracting machine 1 is discharged commutates by the first valve port C and the second valve port D of the first commutation component 2 by second
4th interface J of component 3 and the 3rd interface I, the first outdoor heat exchanger 7 and the second outdoor heat exchanger 8 are flowed into, and it is outdoor first
Energy exchange is carried out with external environment in the outdoor heat exchanger 8 of heat exchanger 7 and second, subsequent refrigerant flows from the second outdoor heat exchanger 8
Go out, by the second interface H and first interface G of the second commutation component 3, first throttle element 5 is flowed to, through first throttle element 5
The refrigerant of low-temp low-pressure is formed after reducing pressure by regulating flow, flows into indoor heat exchanger 4, indoors in heat exchanger 4 evaporation endothermic to reduce room
Interior temperature, the refrigerant after heat exchange pass through the 3rd valve port E and the 4th valve port F of the first commutation component 2, and pass through returning for compressor 1
Gas port B enters compressor 1, reciprocal with this so as to form kind of refrigeration cycle.
Certainly, it will be understood by those skilled in the art that, when air conditioner 100 freezes or second
The first interface G of commutation component 3 connects with the 3rd interface I, and the 4th interface J connects with second interface H, thus, from the first commutation
The refrigerant of the second valve port D outflows of component 2 flows directly into the 4th interface J of the second commutation component 3, is then flowed from second interface H
Go out to the second outdoor heat exchanger 8 and the first outdoor heat exchanger 7, then flow out to the 3rd interface I from the first outdoor heat exchanger 7, connect
From first interface G and flow to first throttle element 5.
As shown in Fig. 2 when air conditioner 100 is in heating mode, the first valve port C and the 3rd valve of the first commutation component 2
Mouth E connections, the 4th valve port F connect with the second valve port D, and the first interface G of the second commutation component 3 connects with second interface H, and the 4th
Interface J is connected with the 3rd interface I, and the first controller 6 is closed, and second controller 10 is opened, the exhaust outlet A discharges through compressor 1
The refrigerant of HTHP flow to indoor heat exchanger 4 by the first valve port C and the 3rd valve port E, condensation dissipates in heat exchanger 4 indoors
Heat, then into first throttle element 5, low temperature is formed after the reducing pressure by regulating flow of first throttle element 5 to be heated to indoor environment
The refrigerant of low pressure, by first interface G and second interface H, enter in the second outdoor heat exchanger 8 and the first outdoor heat exchanger 7
Evaporation endothermic, then flowed out from the first outdoor heat exchanger 7, by the 3rd interface I and the 4th interface J, flow to the second valve port D and
Four valve port F, and the gas returning port B through compressor 1 returns to compressor 1, it is reciprocal with this, realize the heating circulation of air conditioner 100.
Certainly, it will be understood by those skilled in the art that, when air conditioner 100 heats or second changes
Connected to the first interface G of component 3 with the 3rd interface I, the 4th interface J connects with second interface H, thus, from indoor heat exchanger 4
The refrigerant of outflow, directly by first interface G and the 3rd interface I, enters after the reducing pressure by regulating flow of first throttle element 5
Evaporation endothermic in one outdoor heat exchanger 7 and the second outdoor heat exchanger 8, then flows out from the second outdoor heat exchanger 8, is connect by second
Mouth H and the 4th interface J, flows to the second valve port D and the 4th valve port F, so as to return to compressor 1.
As shown in figure 3, when air conditioner 100 is in the first self-circulating defrosting pattern, during to the first 7 defrost of outdoor heat exchanger,
First valve port C of the first commutation component 2 connects with the 3rd valve port E, and the 4th valve port F connects with the second valve port D, the second commutation component
3 first interface G is connected with the 3rd interface I, and the 4th interface J connects with second interface H, and the first controller 6 is opened, the second control
Device 10 is closed, and indoor auxiliary heating device is opened, and the refrigerant of the HTHP of the now exhaust outlet A of compressor 1 discharges passes through first
Valve port C and the 3rd valve port E, the condensation radiating of indoor heat exchanger 4 is flowed into improve indoor temperature, subsequently forms the liquid of HTHP
Refrigerant, then by the first controller 6, first interface G and the 3rd interface I are flowed through, flow to the condensation radiating of the first outdoor heat exchanger 7
To be defrosted to the first outdoor heat exchanger 7, after after the reducing pressure by regulating flow of the second restricting element 9, the second outdoor heat exchange is entered
Evaporation endothermic in device 8, then by second interface H and the 4th interface J, the second valve port D and the 4th valve port F is flowed through, and pass through pressure
The gas returning port B of contracting machine 1 returns to compressor 1.During the defrost to the first outdoor heat exchanger 7, indoor heat exchanger 4 continue to
Indoor heating, along with the unlatching of indoor auxiliary heating device further increases heating effect, so as to drastically increase use
The comfortableness at family.
As shown in figure 4, when air conditioner 100 is in the second self-circulating defrosting pattern, during to the second 8 defrost of outdoor heat exchanger,
First valve port C of the first commutation component 2 connects with the 3rd valve port E, and the 4th valve port F connects with the second valve port D, the second commutation component
3 first interface G is connected with second interface H, and the 4th interface J connects with the 3rd interface I, and the first controller 6 is opened, the second control
Device 10 is closed, and indoor auxiliary heating device is opened, and now the refrigerant of the HTHP of the exhaust outlet A discharges of compressor 1 is by the
One valve port C and the 3rd valve port E, the condensation radiating of indoor heat exchanger 4 is flowed into improve indoor temperature, subsequently forms the liquid of HTHP
State refrigerant, then by the first controller 6, first interface G and second interface H are flowed through, flow to the condensation of the second outdoor heat exchanger 8 and dissipate
Heat to the second outdoor heat exchanger 8 to defrost, and afterwards after the reducing pressure by regulating flow of the second restricting element 9, it is outdoor to enter first
Evaporation endothermic in heat exchanger 7, then by the 3rd interface I and the 4th interface J, the second valve port D and the 4th valve port F is flowed through, through pressure
The gas returning port B of contracting machine 1 returns to compressor 1, and the defrost to the second outdoor heat exchanger 8 is back and forth realized with this.Outside to second Room
During the defrost of heat exchanger 8, indoor heat exchanger 4 continues to indoor heating, along with the unlatching of indoor auxiliary heating device is entered
One step adds heating effect, so as to drastically increase the comfortableness of user.
Air conditioner 100 according to embodiments of the present invention, by setting the first outdoor heat exchanger 7 and in air-conditioner outdoor unit
Two outdoor heat exchangers 8, and the He of the second restricting element 9 is connected in parallel between the first outdoor heat exchanger 7 and the second outdoor heat exchanger 8
Second controller 10, while the second commutation component 3 is set in coolant loop, indoor heat exchanger 4 can be made to be changed in the first outdoor
Continue during hot 7 or second 8 defrost of outdoor heat exchanger of device to indoor heating, this improves user using air-conditioning to a certain extent
Comfortableness during 100 heat-production functions of device, the problem of avoiding existing air conditioner indoor can not heat when outside is defrosted.
According to some embodiments of the present invention, the first controller 6 is configured to be in normally off, only works as air conditioner
100 when being in defrost pattern, and the first controller 6 is just opened, and thus, without controlling the running status of the first controller 7, is easy to sky
The control operation of device 100 is adjusted, the long-time of air conditioner 100 is in and freezes or heat state.
In some embodiments of the invention, second controller 10 is configured to be in normally open, only works as air conditioner
100 when opening defrost pattern, and second controller is just closed, consequently facilitating air conditioner 100 is in refrigeration mode and heating mode
Normal work.
Alternatively, first throttle element 5 is capillary or electric expansion valve, and the second restricting element 9 is also capillary or electricity
Sub- expansion valve, for example, the restricting element 9 of first throttle element 5 and second can be simultaneously capillary or be electric expansion valve simultaneously,
Certainly, first throttle element 5 can also be one in capillary or electric expansion valve, the second restricting element 9 be capillary or
Another in electric expansion valve.Still optionally further, the restricting element 9 of first throttle element 5 and second is electric expansion valve,
Due to the size of the i.e. controllable cold medium flux of aperture by controlling electric expansion valve, in electronic expansion valve opening maximum without section
Stream acts on, it is therefore not necessary to set the controller in parallel with electric expansion valve that reducing pressure by regulating flow and break-make to refrigerant can be achieved, this
Cost has been saved to a certain extent.
According to some embodiments of the present invention, the first outdoor heat exchanger 7 and the second outdoor heat exchanger 8 are two and independent changed
Thermal element, thus, it is possible to largely improve the exchange capability of heat of outdoor heat exchanger.Certainly, the invention is not restricted to this, first
Two parts of the outdoor heat exchanger 8 of outdoor heat exchanger 7 and second or a heat exchange element, it is not only simple in construction, but also
Cost has been saved to a certain extent.
The control method of air conditioner according to embodiments of the present invention is described in detail below, wherein according to air conditioner
The air conditioner of the above embodiment of the present invention, the first temperature sensor, second temperature sensor and the 3rd can be provided with air conditioner
Temperature sensor, wherein, the first temperature sensor is used for the temperature for detecting the first outdoor heat exchanger, and second temperature sensor is used for
The temperature of the second outdoor heat exchanger is detected, three-temperature sensor is used to detect the environment temperature in air-conditioner outdoor unit.
When following either condition meets, control air conditioner enters the first self-circulating defrosting pattern, in the first self-loopa
White pattern, the first valve port of the first commutation component connect with the 3rd valve port, and the 4th valve port connects with the second valve port, the second commutation group
The first interface of part and the 3rd orifice, the 4th interface are connected with second interface, and the first controller is opened, and second controller closes
Close, the first outdoor heat exchanger is defrosted：
Condition one, after compressor accumulative operation t1 minutes, the first temperature T1 is less than first predetermined value T11, and first is warm
Degree T1 and the first predetermined difference value BT1 sums are less than or equal to T10, and the 3rd temperature T3 ＞ third predetermined value T33, wherein the first temperature
The temperature that T1 is the first outdoor heat exchanger is spent, second temperature T2 is the temperature of the second outdoor heat exchanger, and the 3rd temperature T3 is air-conditioning
Environment temperature in device outdoor unit, T10 are that air conditioner heat-production runs and arrives m2 minutes after compressor start continuous service m1 minutes
Interior T1 minimum value.
Condition two, after compressor accumulative operation t2 minutes, the first temperature T1 is less than the 4th predetermined value T12, the 3rd temperature
The predetermined value T34 of T3 ＞ the 5th, and continue m3 minutes.
Condition three, after compressor accumulative operation t3 minutes, the first temperature T1 is less than the 6th predetermined value T13, the 3rd temperature
The predetermined value T35 of T3 ＞ the 7th.
Meet between environment temperature in temperature, air-conditioner outdoor unit and each preset temperature when the first outdoor heat exchanger
When above-mentioned condition one is to any one condition in condition three, air conditioner just enters the first self-circulating defrosting pattern, to first
Outdoor heat exchanger defrost.
It is understood that first predetermined value T11, the first predetermined difference value BT1, third predetermined value T33, the 4th predetermined value
T12, the 5th predetermined value T34, the 6th predetermined value T13 and the 7th predetermined value T35 concrete numerical value can be carried out according to actual conditions
Specific setting, just limited here without specific.Simultaneously in condition one, condition two, condition three during the accumulation operation of compressor
Between can also specifically be limited according to actual conditions.
When following either condition meets, control air conditioner enters the second self-circulating defrosting pattern, in the second self-loopa
White pattern, the first valve port of the first commutation component connect with the 3rd valve port, and the 4th valve port connects with the second valve port, the second commutation group
The first interface of part is connected with second interface, the 4th interface and the 3rd orifice, and the first controller is opened, and second controller closes
Close, the second outdoor heat exchanger is defrosted：
Condition four, after compressor accumulative operation t4 minutes, second temperature T2 is less than the first setting value T21, and second is warm
The settings of degree T2 and second difference BT2 sums are less than or equal to T20, and the 3rd temperature T3 ＞ the 3rd setting value T331, wherein T20 are
Air conditioner heat-production is run and after compressor start continuous service m1 minutes to the minimum value of the T2 in m2 minutes.
Condition five, after compressor accumulative operation t5 minutes, second temperature T2 is less than the 4th setting value T22, the 3rd temperature
The setting value T341 of T3 ＞ the 5th, and continue m31 minutes.
Condition six, after compressor accumulative operation t6 minutes, second temperature T2 is less than the 6th setting value T23, the 3rd temperature
The setting value T351 of T3 ＞ the 7th.
Meet between environment temperature in temperature, air-conditioner outdoor unit and each preset temperature when the second outdoor heat exchanger
When above-mentioned condition four is to any one condition in condition six, air conditioner just enters the second self-circulating defrosting pattern, to second
Outdoor heat exchanger defrost.
It is understood that the first setting value T21, the second setting difference BT2, the 3rd setting value T331, the 4th setting value
T22, the 5th setting value T341, the 6th setting value T23 and the 7th setting value T351 concrete numerical value can be entered according to actual conditions
The specific setting of row, is just limited without specific here.The accumulation of compressor is run in condition four, condition five, condition six simultaneously
Time can also specifically limit according to actual conditions.
When meeting to enter the first self-circulating defrosting pattern and the second self-circulating defrosting pattern simultaneously, first is initially entered certainly
Circulate defrost pattern, after enter back into the second self-circulating defrosting pattern.If it is understood, however, that the first outdoor heat exchanger and
There was only one among second outdoor heat exchanger and meet defrost condition, then entrance meets oneself of that outdoor heat exchanger of defrost condition
Circulate defrost pattern.
The first self-circulating defrosting pattern is run in air conditioner or during the second self-circulating defrosting pattern, when detecting that satisfaction exits
During condition, defrost is exited, that is to say, that be currently running the air-conditioning of the first self-circulating defrosting pattern or the second self-circulating defrosting pattern
Device exits defrost pattern at once when detecting that satisfaction exits the condition of defrost, switches to heating mode or refrigeration mode.
According to the control method of the air conditioner of the present invention, during the defrost of air conditioner, indoor heat exchanger can be held
Continue to indoor radiating, so as to ensure that the lasting heating of indoor set during defrost, this improves user and existed to a certain extent
Using comfortableness during air conditioner heat-production function, while by detecting the temperature of the first outdoor heat exchanger and the second outdoor heat exchanger
Degree, and by it compared with predetermined value to determine whether to be defrosted, can be defrosted according to actual conditions, avoid air-conditioning
Device is defrosted in frostless situation and wastes energy, ensure that the purpose that realization has frost to defrost.
Further, in the first self-circulating defrosting pattern, exit criteria is：Detect that T1 is higher than the first design temperature
It is worth, detects T1 higher than the second set temperature value and continued for first scheduled time or detect to remove the first outdoor heat exchanger
Frost time more than the first setting time, wherein the first set temperature value is more than the second set temperature value.Changed outside to second Room
During hot device defrosting, exit criteria is：Detect T2 higher than the 3rd set temperature value, detect T2 higher than the 4th set temperature value and
Continue second scheduled time or detection to the time that the second outdoor heat exchanger is defrosted more than the second setting time, wherein the
Three set temperature values are more than the 4th set temperature value.
When the first self-circulating defrosting pattern and the second self-circulating defrosting pattern meet respective exit criteria respectively, air-conditioning
Device exits defrost pattern immediately, so as to switch to heating mode or refrigeration mode, to continue to indoor heating or refrigeration.
For example, when air conditioner is in heating mode, compressor open record compressor start continuously after 7 minutes arrive by operation
T1 minimum values T10, T2 minimum value in 12 minutes is T20.
As shown in figure 5, if compressor start or the first outdoor heat exchanger defrost terminate rear timing and started, compressor adds up
After operation 29 minutes, decision condition one, if T1 ＜ first predetermined values T11 (for example, T11=-7 DEG C), and the predetermined difference values of T1+ first
BT1 (for example, BT1=2.5 DEG C)≤T10, and the 3rd temperature T3 ＞ third predetermined values T33 (for example, T33=-22 DEG C), if meeting
Condition one, while check whether the second outdoor heat exchanger defrost flag is 0, and if 0, air conditioner just enters the first self-loopa
White pattern, so as to the first outdoor heat exchanger defrost, now the defrost flag of the first outdoor heat exchanger is 1.If it is unsatisfactory for condition
One, then continue decision condition two and condition three, if there is a satisfaction in condition two and condition three, and the second outdoor heat exchanger defrost
Flag is 0, then air conditioner enters the first self-circulating defrosting pattern.
After air conditioner enters the first self-circulating defrosting pattern 1s, T1 is persistently detected, when detecting that T1 ＞ first set temperature
During angle value (for example, the first set temperature value is 18 DEG C), the first self-circulating defrosting pattern is exited, otherwise continues to detect, works as detection
To the set temperature values of T1 ＞ second (for example, the second set temperature value be 8 DEG C), and continued for first scheduled time (such as first is pre-
Fix time as 30 seconds), or detect air conditioner to the time that the first outdoor heat exchanger is defrosted more than the first setting time (example
Such as, the first setting time is 3 minutes) when, air conditioner exits the first self-circulating defrosting pattern, now the change of the first outdoor heat exchanger
White flag is 0.
As shown in fig. 6, if compressor start or the second outdoor heat exchanger defrost terminate rear timing and started, compressor adds up
After operation 29 minutes, decision condition four, if T2 ＜ the first setting value T21 (for example, T21=-7 DEG C), and T2+ second sets difference
BT2 (for example, BT2=2.5 DEG C)≤T20, and the setting value T331 (for example, T331=-22 DEG C) of the 3rd temperature T3 ＞ the 3rd, if full
Sufficient condition four, while check whether the first outdoor heat exchanger defrost flag is 0, and if 0, air conditioner just enters the second self-loopa
Defrost pattern, so as to the second outdoor heat exchanger defrost, now the defrost flag of the second outdoor heat exchanger is 1, if being unsatisfactory for bar
Part four, then air conditioner continues decision condition five and condition six, if there is a satisfaction in condition five and condition six, and the first outdoor is changed
Hot device defrost flag is 0, then air conditioner enters the second self-circulating defrosting pattern.
Air conditioner enter the second self-circulating defrosting pattern 1s after, persistently detect T2, when detect T2 ＞ the 3rd setting temperature
During angle value (for example, the 3rd set temperature value is 18 DEG C), the second self-circulating defrosting pattern is exited, otherwise continues to detect, works as detection
To the set temperature values of T2 ＞ the 4th (for example, the 4th set temperature value be 8 DEG C), and continued for second scheduled time (such as second is pre-
Fix time as 30 seconds), or detect air conditioner to the time that the second outdoor heat exchanger is defrosted more than the second setting time (example
Such as, the second setting time is 3 minutes) when, air conditioner exits the second self-circulating defrosting pattern, now the change of the second outdoor heat exchanger
White flag is 0.
After air conditioner exits defrost pattern, the first controller is closed, and second controller is in opening, the
The first interface of two commutation components connects with second interface, and the 4th interface and the 3rd orifice, air conditioner enter heating mode
Or refrigeration mode, exit defrost pattern and enter in heating mode certain time (for example, 4 minutes) rear chamber aiding in air conditioner
Heating combined equipment is closed.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied the different embodiments or example and the feature of different embodiments or example described in this specification
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (9)
- A kind of 1. air conditioner, it is characterised in that including：Compressor, the compressor have exhaust outlet and gas returning port；First commutation component, the first commutation component have the first valve port to the 4th valve port, first valve port and the second valve Mouthful connected with one of in the 3rd valve port, the 4th valve port with it is another in second valve port and the 3rd valve port Individual connection, first valve port are connected with the exhaust outlet, and the 4th valve port is connected with the gas returning port；Indoor heat exchanger, the first end of the indoor heat exchanger are connected with the 3rd valve port；There is first interface to the 4th interface, the first interface to be connect with second for second commutation component, the second commutation component Mouthful connected with one of in the 3rd interface, the 4th interface with it is another in the second interface and the 3rd interface Be connected between second end of individual connection, the first interface and the indoor heat exchanger first throttle element that is connected in parallel and First controller, the 4th interface are connected with second valve port；First outdoor heat exchanger and the second outdoor heat exchanger, the first end of first outdoor heat exchanger and the 3rd interface phase Even, the first end of second outdoor heat exchanger is connected with the second interface, the second end of first outdoor heat exchanger with The second restricting element and second controller being connected in parallel are connected between second end of second outdoor heat exchanger；Wherein, when the air conditioner is in heating mode, first controller is closed and the second controller is opened.
- 2. air conditioner according to claim 1, it is characterised in that the first commutation component is four-way valve.
- 3. air conditioner according to claim 1, it is characterised in that the second commutation component is four-way valve.
- 4. air conditioner according to claim 1, it is characterised in that first controller is configured to be in normally closed shape State.
- 5. air conditioner according to claim 1, it is characterised in that the second controller is configured to be in normally opened shape State.
- 6. air conditioner according to claim 1, it is characterised in that the first throttle element is capillary or electronic expansion Valve, second restricting element are capillary or electric expansion valve.
- 7. air conditioner according to claim 1, it is characterised in that changed outside first outdoor heat exchanger and the second Room Hot device is two independent heat exchange elements, or first outdoor heat exchanger and second outdoor heat exchanger are a heat exchange Two parts of element.
- 8. a kind of control method of air conditioner, it is characterised in that the air conditioner is according to any one of claim 1-5 Air conditioner, the control method is as follows：When following either condition meets, control the air conditioner to enter the first self-circulating defrosting pattern, followed certainly described first Ring defrost pattern, second controller are closed, the first outdoor heat exchanger are defrosted：Condition one, after compressor accumulative operation t1 minutes, the first temperature T1 is less than first predetermined value T11, and the first temperature T1 It is less than or equal to T10, and the 3rd temperature T3 ＞ third predetermined value T33 with the first predetermined difference value BT1 sums, wherein the first temperature T1 For the temperature of the first outdoor heat exchanger, second temperature T2 is the temperature of the second outdoor heat exchanger, and the 3rd temperature T3 is air conditioner chamber Environment temperature in outer machine, the T10 are that air conditioner heat-production runs and arrives m2 minutes after compressor start continuous service m1 minutes Interior T1 minimum value；Condition two, after compressor accumulative operation t2 minutes, the first temperature T1 is less than the 4th predetermined value T12, the 3rd temperature T3 ＞ 5th predetermined value T34, and continue m3 minutes；Condition three, after compressor accumulative operation t3 minutes, the first temperature T1 is less than the 6th predetermined value T13, the 3rd temperature T3 ＞ 7th predetermined value T35；When following either condition meets, control the air conditioner to enter the second self-circulating defrosting pattern, followed certainly described second Ring defrost pattern, second controller are closed, the second outdoor heat exchanger are defrosted：Condition four, after compressor accumulative operation t4 minutes, second temperature T2 is less than the first setting value T21, and second temperature T2 It is less than or equal to T20, and the setting value T331 of the 3rd temperature T3 ＞ the 3rd with the second setting difference BT2 sums, wherein the T20 is Air conditioner heat-production is run and after compressor start continuous service m1 minutes to the minimum value of the T2 in m2 minutes；Condition five, after compressor accumulative operation t5 minutes, second temperature T2 is less than the 4th setting value T22, the 3rd temperature T3 ＞ 5th setting value T341, and continue m31 minutes；Condition six, after compressor accumulative operation t6 minutes, second temperature T2 is less than the 6th setting value T23, the 3rd temperature T3 ＞ 7th setting value T351；Wherein when meeting to enter the first self-circulating defrosting pattern and the second self-circulating defrosting pattern simultaneously, first is initially entered certainly Circulate defrost pattern, after enter back into the second self-circulating defrosting pattern.When air conditioner runs the first self-circulating defrosting pattern or the second self-circulating defrosting pattern, meet exit criteria when detecting When, exit defrost.
- 9. the control method of air conditioner according to claim 8, it is characterised in thatIn the first self-circulating defrosting pattern, the exit criteria is：Detect that T1 is higher than the first set temperature value, detects T1 Higher than the second set temperature value and continue first scheduled time or detection first outdoor heat exchanger is defrosted when Between more than the first setting time, wherein first set temperature value is more than second set temperature value；When being defrosted to second outdoor heat exchanger, the exit criteria is：Detect T2 higher than the 3rd set temperature value, inspection T2 is measured higher than the 4th set temperature value and continued for second scheduled time or detect to remove second outdoor heat exchanger Frost time more than the second setting time, wherein the 3rd set temperature value is more than the 4th set temperature value.
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| CN105202794B (en) * | 2015-09-29 | 2018-01-19 | 美的集团武汉制冷设备有限公司 | Air conditioner |
| EP3187789A4 (en) | 2015-10-27 | 2018-03-21 | GD Midea Heating & Ventilating Equipment Co., Ltd. | Enhanced vapor injection air conditioning system |
| CN111121193B (en) * | 2018-10-31 | 2021-10-22 | 广东美芝精密制造有限公司 | Air conditioner |
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