CN105180510B - Air-conditioning device and its control method - Google Patents
Air-conditioning device and its control method Download PDFInfo
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- CN105180510B CN105180510B CN201510484448.XA CN201510484448A CN105180510B CN 105180510 B CN105180510 B CN 105180510B CN 201510484448 A CN201510484448 A CN 201510484448A CN 105180510 B CN105180510 B CN 105180510B
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Abstract
The invention discloses a kind of air-conditioning device and its control method, air-conditioning device includes：Double-cylinder variable-capacity compressor, the first control valve, commutation component, indoor heat exchanger, outdoor heat exchanger, injection drainage system, the second spray circuits and the 3rd spray circuits；First control valve control assistant cylinder；The first valve port of component that commutates is connected with one of in the second valve port and the 3rd valve port, and the 4th valve port is connected with another, and the first valve port is connected with exhaust outlet；Outdoor heat exchanger has the first heat exchanging part and the second heat exchanging part, and the first heat exchanging part is connected with the 3rd valve port and indoor heat exchanger, and restricting element is provided between indoor heat exchanger；The ejection end for spraying drainage system is connected by the first spray circuits with the second heat exchanging part, and drainage end is connected with the 4th valve port, and the port of export is connected with gas returning port, and is in series with second, third and the 4th control valve in first, second, and third spray circuits respectively.The air-conditioning device can meet the heat exchange demand under bad working environments.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly to a kind of air-conditioning device and its control method.
Background technology
At present, using there is constant volume variable speed compressor on air-conditioner, the positive displacement compressor has two cylinders.Correlation technique
In, air-conditioner opens master cylinder in refrigeration or heating mode, then judges indoor demand, and assistant cylinder is opened as needed.
Generally, refrigerating capacity can meet user's request, but, in high-temperature refrigeration or low-temperature heating, with freezing and heat
The decay of ability, even if the need for two cylinders of unlatching can not meet interior, not reaching temperature of the user using setting, badly
Comfort level is poor under operating mode.
The content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.Therefore, the present invention is carried
Go out a kind of air-conditioning device, the air-conditioning device disclosure satisfy that demand when high-temperature refrigeration and low-temperature heating, improve to a certain extent
The comfort level of user.
The invention also discloses a kind of control method of above-mentioned air-conditioning device.
Air-conditioning device according to embodiments of the present invention, including：Double-cylinder variable-capacity compressor, the double-cylinder variable-capacity compressor has
Exhaust outlet, gas returning port, blow vent, master cylinder and assistant cylinder, the blow vent are connected with the slide plate chamber of the assistant cylinder；The
One control valve, the first control valve is connected described to control with the blow vent, the exhaust outlet and the gas returning port respectively
Blow vent is connected with one of in the exhaust outlet and the gas returning port；Commutation component, the commutation component has first
To the 4th valve port, first valve port is connected valve port with one of in the second valve port and the 3rd valve port, the 4th valve port
Connected with another in second valve port and the 3rd valve port, first valve port is connected with the exhaust outlet；It is indoor
Heat exchanger, the first end of the indoor heat exchanger is connected with second valve port；Outdoor heat exchanger, the outdoor heat exchanger has
First heat exchanging part and the second heat exchanging part, the first end of first heat exchanging part are connected with the 3rd valve port, and described
Restricting element is in series between second end of one heat exchanging part and the second end of the indoor heat exchanger；Injection drainage system, institute
Stating injection drainage system includes ejection end, drainage end and the port of export, and the ejection end passes through the first spray circuits and described second
Heat exchanging part is connected, and the drainage end is connected with the 4th valve port, and the port of export is connected with the gas returning port, and described first
The second control valve is in series with spray circuits；Second spray circuits, the first end of second spray circuits is changed with described second
Hot part is connected, and the second end of second spray circuits is connected between second valve port and the indoor heat exchanger, institute
State and the 3rd control valve is in series with the second spray circuits；3rd spray circuits, the first end of the 3rd spray circuits is connected to
Between first heat exchanging part and the restricting element, the second end of the 3rd spray circuits is connected to the 3rd control
Between valve and second heat exchanging part, the 4th control valve is in series with the 3rd spray circuits.
Air-conditioning device according to embodiments of the present invention, by setting injection drainage system, is connected using the first spray circuits
Ejection end and the second heat exchanging part, drainage end is connected with the 4th valve port, and the port of export is connected with gas returning port, using the second control
Valve controls the first spray circuits, and is connected with the second heat exchanging part by by the first end of the second spray circuits, by the second injection
Second end in loop is connected between the second valve port and indoor heat exchanger, controls the second spray circuits using the 3rd control valve, together
When, it is connected between the 3rd the second heat exchanging part of control valve Kazakhstan by by the first end of the 3rd spray circuits, using the 4th control
Valve controls the 3rd spray circuits, in high-temperature refrigeration or low-temperature heating, can be compressed to twin-tub transfiguration by spraying drainage system
Machine injects refrigerant, such that it is able to meet demand, and then improves the comfort level of user to a certain extent.
Specifically, described first valve is controlled for triple valve.
Alternatively, described second valve is controlled for electric expansion valve or magnetic valve.
Specifically, the described 3rd to control valve be from the second end of second spray circuits to second spray circuits
First end direction on one-way conduction check valve.
Specifically, the described 4th to control valve be from the first end of the 3rd spray circuits to the 3rd spray circuits
The second end direction on one-way conduction check valve.
Preferably, the commutation component is four-way valve.
Additionally, the invention also discloses a kind of control method of air-conditioning device, the air-conditioning device is above-mentioned air-conditioning dress
Put, the control method comprises the following steps：S1：Open the air-conditioning device and judge operational mode, the master cylinder operation,
The first control valve is controlled to open the assistant cylinder；S2：Detection outdoor environment temperature T1, and by outdoor environment temperature T1
It is compared with the first preset temperature Tb1 and the second predetermined temperature Tb2；S3：As T1 ＜ Tb1, then into low-temperature heating pattern,
As T1 ＞ Tb2, then into high-temperature refrigeration pattern, in low-temperature heating pattern or high-temperature refrigeration pattern, second control is opened
Valve processed, the 3rd control valve or the 4th control valve conducting refrigerant are sprayed the double-cylinder variable-capacity compressor with by the first spray circuits
Refrigerant；As Tb1≤T1≤Tb2, present mode of operation is kept, in low-temperature heating pattern or high-temperature refrigeration pattern, as Tb1≤T1
During≤Tb2, then close second and control valve；S4：When detecting that indoor environment temperature T2 satisfactions first are pre-conditioned, then control described
First controls valve to close the assistant cylinder；S5：When detecting that the indoor environment temperature T2 satisfactions second are pre-conditioned, then
Close the master cylinder.
The control method of air-conditioning device according to embodiments of the present invention, first turns on air-conditioning device and judges operational mode,
And control first to control valve to open assistant cylinder, then detect outdoor environment temperature T1 and the temperature T1 and the by outdoor environment
One preset temperature Tb1 and the second preset temperature Tb2 are compared, if during T1 ＜ Tb1, into low-temperature heating pattern, if
During T1 ＞ Tb2, then into high-temperature refrigeration pattern, in low-temperature heating pattern or high-temperature refrigeration pattern, open second and control valve simultaneously
Control the 3rd control valve or the 4th control valve to turn on, refrigerant is sprayed to parallel bars cylinder positive displacement compressor by the first spray circuits；Such as
Fruit Tb1≤T1≤Tb2, then keep current operational mode, in low-temperature heating pattern or high-temperature refrigeration pattern, when Tb1≤T1≤
During Tb2, then close second and control valve；Also, when the indoor environment temperature T2 satisfactions first of detection are pre-conditioned, control second
Control valve closes assistant cylinder, when the indoor environment temperature T2 satisfactions second of detection are pre-conditioned, closes master cylinder.Cause
This, the control method of the air-conditioning device of the embodiment of the present invention can be by detecting outdoor environment temperature, and by outdoor environment
Temperature is compared with the first preset temperature Tb1 and the second preset temperature Tb2, and valve, the are controlled according to comparative result control second
Three control valves or the 4th control valve, so as to control the first spray circuits to spray double-cylinder variable-capacity compressor refrigerant, and then meet
Demand when high-temperature refrigeration or low-temperature heating, improves comfortableness to a certain extent.
Preferably, in step sl, delay predetermined time opens the assistant cylinder after the master cylinder is opened.
Alternatively, the scheduled time is 60s.
Specifically, the first preset temperature Tb1 is 0 DEG C, and the second predetermined temperature Tb2 is 40 DEG C.
Brief description of the drawings
Fig. 1 is the structural representation of air-conditioning device according to embodiments of the present invention；
Fig. 2 is the flow chart of the control method of air-conditioning device according to embodiments of the present invention；And
Fig. 3 is the flow chart of the control method of the air-conditioning device according to the specific embodiment of the invention.
Reference：
100：Air-conditioning device；
11：Master cylinder；12：Assistant cylinder；A：Exhaust outlet；B：Gas returning port；B’：Blow vent；
2：Commutation component；
D：First valve port；E：Second valve port；C：3rd valve port；S：4th valve port；
3：Indoor heat exchanger；
4：Outdoor heat exchanger；
41：First heat exchanging part；42：Second heat exchanging part；
5：Restricting element；
6：Injection drainage system；
71：First control valve；72：Second control valve；73：3rd control valve；74：4th control valve；
101：First spray circuits；102：Second spray circuits；103：3rd spray circuits.
Specific 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 Description of Drawings is exemplary, it is intended to for explaining the present invention, and be 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 ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", the instruction such as " outward "
Orientation or position relationship are, based on orientation shown in the drawings or position relationship, to be for only for ease of the description present invention and simplification is retouched
State, rather than indicate imply signified device or element must have specific orientation, with specific azimuth configuration and operation,
Therefore it is not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one this feature.In the description of the invention, " multiple " is meant that at least two, such as two, three
It is individual etc., unless otherwise expressly limited specifically.
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, it is also possible to be indirectly connected to by intermediary, can be with
Be two element internals connection or two interaction relationships of element, unless otherwise clearly restriction.For this area
For those of ordinary skill, above-mentioned term concrete meaning in the present invention can be as the case may be understood.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be with
It is the first and second feature directly contacts, or the first and second features are by intermediary mediate contact.And, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height less than second feature.
Reference picture 1 describes air-conditioning device 100 according to embodiments of the present invention first below.
As shown in figure 1, air-conditioning device 100 according to embodiments of the present invention can include：Double-cylinder variable-capacity compressor, commutation group
Part 2, indoor heat exchanger 3, outdoor heat exchanger 4, restricting element 5, injection drainage system 6, the first spray circuits 101, second are sprayed
Loop 102, the 3rd spray circuits 103, first control the control control control valve 74 of valve 73 and the 4th of valve the 72, the 3rd of valve 71, second.
It is understood that air-conditioning device 100 also includes controller (not shown), controller and double-cylinder variable-capacity compressor, commutation
Control valve 71, second control valve the 72, the 3rd control valve 73 of component 2, first is connected to control each zero with the 4th control valve 74
The running status of part.
As shown in figure 1, double-cylinder variable-capacity compressor has exhaust outlet A, gas returning port B, blow vent B ', master cylinder 11 and auxiliary gas
Cylinder 12.Blow vent B ' can be connected with the slide plate chamber of assistant cylinder 12, and thus, the refrigerant after being compressed through master cylinder 11 can be from exhaust
Mouth A discharges, it is possible to use the auxiliary master cylinder 11 of assistant cylinder 12 is compressed to refrigerant, so that cold in increasing follow-up heat-exchange system
The amount of matchmaker, improves heat exchange efficiency, completes after follow-up heat exchange, and refrigerant can flow back to double-cylinder variable-capacity compressor from gas returning port B, realize following
Ring.
Commutation component 22 can have the first valve port D, the second valve port E, the 3rd valve port C and the 4th valve port S.Specifically,
As shown in figure 1, the first valve port D can be connected with one of in the second valve port E and the 3rd valve port C, the 4th valve port S can be with second
Another in valve port E and the 3rd valve port C is connected, and the first valve port D is connected with the exhaust outlet A of double-cylinder variable-capacity compressor, and the 4th
Valve port S is connected with gas returning port B, and so, the high pressure refrigerant compressed through double-cylinder variable-capacity compressor can be flowed to from after exhaust outlet A discharges changes
To the first valve port D of component 2, and discharged from the second valve port E or the 3rd valve port C, flow to follow-up exchange piece, when refrigerant flow back to it is double
During cylinder positive displacement compressor, the 4th valve port S can be flowed to from the second valve port E and the 3rd valve port C, and flow from the 4th valve port S
To gas returning port B, and then double-cylinder variable-capacity compressor is flowed back to, realize recycling for refrigerant.
As shown in figure 1, the first end of indoor heat exchanger 3 can be connected with the second valve port E, outdoor heat exchanger 4 can have the
One heat exchanging part 41 and the second heat exchanging part 42, wherein, the first end of the first heat exchanging part 41 can be connected with the 3rd valve port C, and
And, can be in series with restricting element 5 between the second end of the first heat exchanging part 41 and the second end of indoor heat exchanger 3.So, exist
During the operation refrigeration of air-conditioning device 100, the refrigerant after being compressed through double-cylinder variable-capacity compressor can flow into outdoor heat exchange from the 3rd valve port C
Device 4, by flowing to indoor heat exchanger 3 after the reducing pressure by regulating flow of restricting element 5, then can return to commutation component 2 from the second valve port E, enter
And double-cylinder variable-capacity compressor is flowed back to from the 4th valve port S, kind of refrigeration cycle is completed, as shown in the solid arrow in Fig. 1.
And when the operation of air-conditioning device 100 is heated, the refrigerant after being compressed through double-cylinder variable-capacity compressor can be passed through from the second valve port E
The first end for crossing indoor heat exchanger 3 flows into indoor heat exchanger 3, is saved through restricting element 5 from after the second end outflow of indoor heat exchanger 3
Stream step-down, then flows to outdoor heat exchanger 4, then flows into commutation component 2, then flows back to double-cylinder variable-capacity compressor from the 4th valve port S,
Completion heats circulation, as shown in the dotted arrow in Fig. 1.
Alternatively, restricting element 5 can be capillary, can be to high pressure refrigerant reducing pressure by regulating flow, to realize changing by capillary
Heat.Certainly, the present invention is not limited thereto, and restricting element 5 can also be electric expansion valve, realizes that air-conditioning is filled by electric expansion valve
Automatically adjusting and reducing pressure by regulating flow for cold medium flux in 100 is put, can further realize that refrigerant is acted on the heat exchange of environment.
First control valve 71 can be connected with blow vent B ', exhaust outlet A and gas returning port B respectively, as shown in figure 1, such that it is able to
Blow vent B ' is controlled to be connected with exhaust outlet A and gas returning port B by the first control valve 71, when the first control valve 71 is controlled
When blow vent B ' is connected with exhaust outlet A, blow vent B ' is in hyperbaric environment, so that the slide plate chamber of assistant cylinder 12 is in high compression ring
Border, the slide plate in assistant cylinder 12 only can be against on the periphery wall of piston, so that assistant cylinder 12 can be compressed action.
And when the first control control of valve 71 blow vent B ' is connected with gas returning port B, blow vent B ' is in environment under low pressure, so that assistant cylinder
Slide plate chamber in 12 is in environment under low pressure, the periphery wall emaciated face of the slide plate in assistant cylinder 12 and piston from cooperation, so as to aid in
Cylinder 12 stops compressed action.From there through the unlatching or operation of control assistant cylinder 12, the amount of refrigerant in circulation can be adjusted,
Heat exchange needs are met to a certain extent.
As shown in figure 1, injection drainage system 6 can include：Ejection end, drainage end and the port of export, wherein, ejection end passes through
First spray circuits 101 are connected with the second heat exchanging part 42, and drainage end can connect with the 4th valve port S-phase, the port of export and gas returning port B phases
Connect, and the second control valve 72 can be in series with the first spray circuits 101.When the second control valve 72 opens the first spray circuits
When 101, part refrigerant can be entered into injection drainage system 6 from the second heat exchanging part 42 and by ejection end, such that it is able to carry
The flow velocity of the refrigerant entered into injection drainage system 6 from drainage end high, while also causing to flow back in double-cylinder variable-capacity compressor
Coolant quantity increases, so as to improve the heat exchange efficiency of air-conditioning device 100 to a certain extent, further meets heat exchange needs.
The first end of the second spray circuits 102 can be connected with the second heat exchanging part 42, the second end of the second spray circuits 102
May be connected between the second valve port E and indoor heat exchanger 3, and the 3rd control valve 73 can be in series with the second spray circuits 102,
As shown in Figure 1.Thus, it is possible to pass through the on or off that the 3rd control valve 73 controls the second spray circuits 102, when the 3rd control
When control the second spray circuits 102 of valve 73 are turned on, the second heat exchanging part 42 is flowed into from a part of refrigerant of the second valve port E outflows
Inside exchanged heat, further increase the coolant quantity for flowing back to double-cylinder variable-capacity compressor, to improve heat exchange efficiency.
As shown in figure 1, the first end of the 3rd spray circuits 103 may be connected to the first heat exchanging part 41 and restricting element 5 it
Between, and the second end of the 3rd spray circuits 103 can be connected between the 3rd control heat exchanging part 42 of valve 73 and second, and the 3rd
The 4th control valve 74 can be in series with spray circuits 103, the 3rd spray circuits are controlled such that it is able to pass through the 4th control valve 74
103 on or off, when controlling the 3rd spray circuits 103 to turn on by the 4th control valve 74, will can exchange heat from first
The part refrigerant of the outflow of part 41 directs into the second heat exchanging part 42, the flow velocity of refrigerant in increase system, so as to improve heat exchange effect
Rate, meets the heat exchange needs under bad working environments.
When air-conditioning device 100 be located at low-temperature heating pattern when, commutate component 2 the first valve port D connected with the second valve port E and
4th valve port S and the 3rd valve port C is connected, and the first control valve 71 causes that blow vent B ' is connected with exhaust outlet A, double-cylinder variable-capacity compressor
Master cylinder 11 and assistant cylinder 12 simultaneously run.3rd control valve 73 is in open mode, and the second control valve 72 is in be opened
State, and the 4th control valve 74 be closed.
It is flowed into by the first valve port D in the component 2 that commutates from the refrigerant of double-cylinder variable-capacity compressor discharge, refrigerant is from the second valve
Mouth E outflow commutation components 2, now refrigerant is divided into two parts, wherein refrigerant flow direction is all the way：Indoor heat exchanger 3 --- throttling unit
--- --- the 3rd valve port C --- the 4th valve port S --- sprays drainage system 6 to the first heat exchanging part 41 of outdoor heat exchanger 4 to part 5
Drainage end --- double-cylinder variable-capacity compressor.
Another road refrigerant is flowed to：Second spray circuits 102 --- the second heat exchanging part 42 of outdoor heat exchanger 4 ---
One spray circuits 101 --- ejection end of injection drainage system 6 --- double-cylinder variable-capacity compressor.
It follows that the first heat exchanging part 41 is mutually exchanged heat with the refrigerant in the second heat exchanging part 42, while two-way
Refrigerant is converged in drainage system 6 is sprayed, because the pressure of the refrigerant entered into injection drainage system 6 from ejection end is high
In the pressure of the refrigerant entered into injection drainage system 6 from drainage end, such that it is able to form negative pressuren zone, can improve from drainage
The flow velocity of the refrigerant that end is entered into injection drainage system 6, the flow velocity of refrigerant in increase system, so that heat exchange efficiency is improved, it is full
Heat exchange under sufficient bad working environments needs.
When air-conditioning device 100 be located at high-temperature refrigeration pattern when, commutate component 2 the first valve port D connected with the 3rd valve port C and
4th valve port S and the second valve port E is connected, and the first control valve 71 causes that blow vent B ' is connected with exhaust outlet A, double-cylinder variable-capacity compressor
Master cylinder 11 and assistant cylinder 12 simultaneously run.3rd control valve 73 is closed, and the second control valve 72 is in be opened
State, and the 4th control valve 74 is in open mode.
It is flowed into by the first valve port D in the component 2 that commutates from the refrigerant of double-cylinder variable-capacity compressor discharge, refrigerant is from the 3rd valve
Mouth C flows out commutation component 2 and enters into the first heat exchanging part 41 of outdoor heat exchanger 4, from the outflow of the first heat exchanging part 41
Refrigerant is divided into two parts, wherein refrigerant flow direction is all the way：--- the indoor heat exchanger 3 --- the second valve port E --- of restricting element 5
Four valve port S --- the drainage end of injection drainage system 6 --- double-cylinder variable-capacity compressor.
Another road refrigerant is flowed to：3rd spray circuits 103 --- the second heat exchanging part 42 of outdoor heat exchanger 4 ---
One spray circuits 101 --- ejection end of injection drainage system 6 --- double-cylinder variable-capacity compressor.
It follows that the first heat exchanging part 41 is mutually exchanged heat with the refrigerant in the second heat exchanging part 42, while two-way
Refrigerant is converged in drainage system 6 is sprayed, because the pressure of the refrigerant entered into injection drainage system 6 from ejection end is high
In the pressure of the refrigerant entered into injection drainage system 6 from drainage end, such that it is able to form negative pressuren zone, can improve from drainage
The flow velocity of the refrigerant that end is entered into injection drainage system 6, the flow velocity of refrigerant in increase system, so that heat exchange efficiency is improved, it is full
Heat exchange under sufficient bad working environments needs.
When air-conditioning device 100 is in normally freeze or heat state, the second control control valve 73 and the 4th of valve the 72, the 3rd
Control valve 74 is in closed mode, and can as needed control the first control valve 71 so that blow vent B ' and exhaust outlet A and
One of connection in gas returning port B, i.e., control master cylinder 11 and assistant cylinder 12 run or only lead simultaneously as needed
Cylinder 11 runs.
Air-conditioning device 100 according to embodiments of the present invention, by set injection drainage system 6, the first spray circuits 101,
Second control valve 72, the control of the second spray circuits the 102, the 3rd valve 73, the 3rd spray circuits 103 and the 4th control valve 74, in height
When being exchanged heat under the bad working environments of temperature refrigeration or low-temperature heating, can be injected to double-cylinder variable-capacity compressor by spraying drainage system 6
Refrigerant, such that it is able to increase the flow velocity of refrigerant, improves heat exchange efficiency, and then meet the heat exchange under bad working environments to a certain extent
Demand, improves the comfort level of user.
As preferred embodiment, as shown in figure 1, commutation component 2 can be four-way valve, such that it is able to make air-conditioning device
100 it is simple and compact for structure.It is, of course, understood that commutation component 2 may be formed as other structures, as long as having the
The one valve port S of valve port D to the 4th and can be commutated, in this regard, the present invention and being not especially limited.
Some embodiments of the invention, as shown in figure 1, the first control valve 71 can be triple valve, by triple valve
Control blow vent B ' and the break-make between exhaust outlet A and gas returning port B, reach the purpose that control assistant cylinder 12 is turned on and off,
It is not only simple to operation, and the compact conformation of air-conditioning device 100 can be made, it is cost-effective to a certain extent.
Used as preferred embodiment, the second control valve 72 can be electric expansion valve, can be realized by electric expansion valve
Cold medium flux is automatically adjusted and reducing pressure by regulating flow in first spray circuits 101, can further realize the injection and drainage to refrigerant,
Improve heat transfer effect.Certainly, the present invention is not limited thereto, and the first control valve 71 can also be magnetic valve, by solenoid valve control
The break-make of the first spray circuits, can quickly and easily control the on or off of the first spray circuits 101.
Some specific examples of the invention, as shown in figure 1, the 3rd control valve 73 can be from the second spray circuits
102 the second end to one-way conduction on the direction of the first end of the second spray circuits 102 check valve, by setting check valve,
The refrigerant in the second spray circuits 102 can be made to flow to the second heat exchanging part 42, it is to avoid the refrigerant in the second heat exchanging part 42 is inverse
To other components of heat-exchange system are flow to, so as to ensure the reliability and stabilization of the second spray circuits 102 to a certain extent
Property.
Meanwhile, the 4th control valve 74 can also be check valve, and the 4th to control the conducting direction of valve 74 be from the 3rd injection
The first end in loop 103 leads to the second end of the 3rd spray circuits 103, thus, in high-temperature refrigeration or low-temperature heating, can make
Refrigerant in 3rd spray circuits 103 flows to the second heat exchanging part 42 of outdoor heat exchanger 4, it is to avoid in the second heat exchanging part 42
Refrigerant is reverse to other components, is further ensured that the reliability of the 3rd spray circuits 103.
As preferred embodiment, as shown in figure 1, air-conditioning device 100 can also include gas-liquid separator 8.It is specific and
Speech, gas-liquid separator 8 can have gas-liquid entrance and gas vent, wherein, as shown in figure 1, gas-liquid entrance can be with the 4th valve port S-phase
Even, gas vent can be connected with gas returning port B.Thus, it is possible to passing through gas-liquid separator will flow back to twin-tub transfiguration by the 4th valve port S
The refrigerant of compressor is separated, and gaseous refrigerant is flowed out from gas vent, further flows back to twin-tub transfiguration from gas returning port B
Compressor, so as to ensure that only gaseous coolant is expelled back into double-cylinder variable-capacity compressor, it is to avoid double-cylinder variable-capacity compressor occurs liquid hammer
Phenomenon, and then to a certain extent for double-cylinder variable-capacity compressor provides protection, extend its service life.
To sum up, air-conditioning device according to the preferred embodiment of the invention 100, by setting injection drainage system 6, using first
Spray circuits 101 connect ejection end and the second heat exchanging part 42, and the 4th valve port S-phase of drainage end and four-way valve is connected, and will export
End is connected with gas returning port B, and blow vent B ' is connected with exhaust outlet A and gas returning port B by triple valve, auxiliary to control
Cylinder 12 is helped, assistant cylinder 12 is aided in the compression refrigerant of master cylinder 11 as needed.Using electric expansion valve or solenoid valve control
First spray circuits 101, and be connected with the second heat exchanging part 42 by by the first end of the second spray circuits 102, by the second spray
It is emitted back towards second end on road 102 to be connected between the second valve port E and indoor heat exchanger 3, is sprayed back using the control of check valve 73 second
Road 102, meanwhile, by by the second end of the 3rd spray circuits 103 be connected to the 3rd control valve 73 and second heat exchanging part 42 it
Between, the 3rd spray circuits 103 being controlled using check valve 74, in high-temperature refrigeration or low-temperature heating, can be filled by spraying drainage
Put 6 and inject refrigerant to double-cylinder variable-capacity compressor, such that it is able to increase the flow velocity of refrigerant, heat exchange efficiency is improved to a certain extent,
And then meet the heat exchange demand under bad working environments, improve the comfort level of user.
Fig. 2 is the flow chart of the control method of the air-conditioning device according to the embodiment of the present invention.Wherein, the air-conditioning device is upper
State the air-conditioning device 100 of embodiment description.
As shown in Fig. 2 the control method of air-conditioning device according to embodiments of the present invention is comprised the following steps：S1, unlatching are empty
Adjust device and judge operational mode, master cylinder operation, control first controls valve to open assistant cylinder.
S2, detection outdoor environment temperature T1, and by outdoor environment temperature T1 and the first preset temperature Tb1 and the second pre- constant temperature
Degree Tb2 is compared.
It should be noted that setting the first preset temperature Tb1 before air-conditioning device brings into operation, it is necessary in controller
The second preset temperature Tb2 can be less than with the second predetermined temperature Tb2, the first preset temperature Tb1.So, can be according to the room of detection
External environment temperature T1 provides basis for estimation for controller, is readily achieved subsequent control, so as to meet heat exchange needs.
S3, as T1 ＜ Tb1, then into low-temperature heating pattern, as T2 ＞ Tb2, then into high-temperature refrigeration pattern, low
In warm heating mode or high-temperature refrigeration pattern, open second and control valve, the 3rd control valve or the 4th control valve conducting refrigerant are with logical
Cross the first spray circuits and refrigerant is sprayed to double-cylinder variable-capacity compressor；As Tb1≤T1≤Tb2, present mode of operation is kept, low
Warm heating mode or high-temperature refrigeration pattern, as Tb1≤T1≤Tb2, then close second and control valve.
Specifically, controller is carried out to outdoor environment temperature T1 and the first preset temperature Tb1 and the second preset temperature Tb2
After comparing, when outdoor environment temperature T1 is less than the first preset temperature Tb1, air-conditioning device can enter low-temperature heating pattern；When
When outdoor environment temperature T1 is more than the second preset temperature, air-conditioning device enters high-temperature refrigeration pattern.In low-temperature heating pattern, beat
The second control valve is driven, the 3rd control valve conducting refrigerant sprays refrigerant, in height by the first spray circuits to double-cylinder variable-capacity compressor
In warm refrigeration mode, the 4th control valve conducting refrigerant sprays refrigerant by the first spray circuits to double-cylinder variable-capacity compressor.So as to
In low-temperature heating pattern and high-temperature refrigeration pattern, increase the coolant quantity in double-cylinder variable-capacity compressor and accelerate the flow velocity of refrigerant,
Heat transfer effect is improved to a certain extent, heat exchange needs are met, and improves the comfort level of user.
And work as after controller compares outdoor environment temperature T1 with the first preset temperature Tb1 and the second preset temperature Tb2
Obtain results of the outdoor environment temperature T1 more than or equal to the first preset temperature Tb1 and less than or equal to the second preset temperature Tb2
When, illustrate that the environment residing for now air-conditioning device is not the environment under high-temperature refrigeration pattern or low-temperature heating pattern, then keep working as
Preceding operational mode, so as to meet the demand of user.
In low-temperature heating pattern or high-temperature refrigeration pattern, if the outdoor environment temperature T1 for detecting is more than or equal to first
Preset temperature Tb1 and during less than or equal to the second preset temperature Tb2, can close the second control valve, stop by the first injection
Refrigerant is sprayed in loop to twin-tub transfiguration cylinder compressor, that is, exit high-temperature refrigeration pattern or low-temperature heating pattern, to a certain extent
Saving energy consumption, reduces cost.
S4, when detect indoor environment temperature T2 meet first it is pre-conditioned when, then control first to control valve to close auxiliary
Cylinder.
S5, when detect indoor environment temperature T2 meet second it is pre-conditioned when, then close master cylinder.
It is understood that second it is pre-conditioned can be user's setting target temperature, and first it is pre-conditioned can be with
It is a temperature value of the neighbouring target temperature, when indoor environment temperature satisfaction first is pre-conditioned, illustrates air-conditioning device i.e.
The target that exchanges heat is up to, now controls first to control valve to close assistant cylinder, can not only reduce double-cylinder variable-capacity compressor consumption
Electric energy, energy saving, and the change of indoor temperature can be made to tend towards stability, so as to improve comfort level；And work as indoor environment
When temperature satisfaction second is pre-conditioned, then illustrate that air-conditioning device has completed the target that exchanges heat, and now closes master cylinder, can be one
Determine reducing energy consumption in degree, save electric energy.
The control method of air-conditioning device according to embodiments of the present invention, by detecting outdoor environment temperature T1, and by outdoor
Environment temperature T1 and the first preset temperature Tb1 and the second preset temperature Tb2 are compared, and air-conditioning device is judged according to comparative result
Operational mode, be double-cylinder variable-capacity compressor using the first spray circuits and under high-temperature refrigeration pattern and low-temperature heating pattern
Injection refrigerant, such that it is able to improving the flow of refrigerant in heat-exchange system and accelerating the flow velocity of refrigerant, improves heat exchange efficiency, Jin Erman
Heat exchange demand under sufficient bad working environments, improves comfort level.
Some embodiments of the invention, the first predetermined temperature Tb1 can be 0 DEG C, and the second predetermined temperature Tb2 can be
40℃.When outdoor environment temperature T1 is less than 0 DEG C, can determine that air-conditioning device is in low-temperature heating pattern, work as outdoor environment temperature
When T1 is higher than 40 DEG C, can determine that air-conditioning device is in high-temperature refrigeration pattern, and work as outdoor environment temperature between 0 DEG C~40 DEG C
When, it is believed that air-conditioning device is in normal mode of operation.
Preferably implementation method, in step sl, after master cylinder is opened, delay predetermined time opens auxiliary gas
Cylinder, so as to when air-conditioning device brings into operation, be only compressed to refrigerant by master cylinder, one is played to double-cylinder variable-capacity compressor
Fixed protective effect.
It is understood that, it is necessary to set the scheduled time in controller before air-conditioning device brings into operation.It is optional
Ground, the scheduled time can be the Default Value of air-conditioning device, it is also possible to be set by User Defined.Thus, when air-conditioning device is opened
When beginning operation is exchanged heat, master cylinder is opened and refrigerant is compressed, and is delivered in system by high pressure refrigerant using master cylinder
The follow-up heat exchange of row, it is to avoid room temperature is widely varied, so as to improve comfort level to a certain extent.Opened after delay predetermined time auxiliary
Cylinder is helped, assistant cylinder is also compressed to refrigerant, worked simultaneously by master cylinder and assistant cylinder, can be in raising system
The amount of high pressure refrigerant, so as to improve heat exchange efficiency, allows room temperature to be rapidly achieved target temperature, meets the demand of user.
In a specific example of the invention, the scheduled time is 60s, by setting the scheduled time of 60s, can be avoided
Rate of change when room temperature starts to change is too big, makes regulation of the air-conditioning device to indoor temperature more gentle, so as to a certain degree
The upper comfort level for improving user.
The step of with reference to Fig. 3 to the control method of the air-conditioning device of a specific example of the invention, is carried out in detail
Thin description.Before air-conditioning device brings into operation, the timer in controller resets, and needs setting scheduled time t, first
Preset temperature Tb1, second preset temperature Tb2 and target temperature Ts etc..
S001, opens master cylinder, by master cylinder compression refrigerant, realizes heat exchange.
S002, during timer.
S003, judges whether the lasting opening time of master cylinder is more than scheduled time t1. if it is, performing step S004；
If not, return performing step SOO2.
S004, control first controls valve, assistant cylinder is started auxiliary master cylinder and refrigerant is compressed, and increases heat exchange system
The amount of refrigerant in system.
S005, detection outdoor environment temperature T1.
Whether S006, judge outdoor temperature T1 less than the first preset temperature Tb1.If it is, performing step S007；If
It is no, perform step S010.
S007, carries out low-temperature heating pattern.
S008, opens second and controls valve, to open the first spray circuits.
S009, the 3rd control valve conducting refrigerant, refrigerant is sprayed by the first spray circuits, is increased in double-cylinder variable-capacity compressor
Refrigerant, accelerate the flow velocity of refrigerant in heat-exchange system, return to step S005 continues to detect outdoor environment temperature T1.
Whether S010, judge outdoor environment temperature T1 more than the second preset temperature Tb2.If it is, performing step S011；Such as
It is really no, perform step S014.
S011, into high-temperature refrigeration pattern.
S012, opens second and controls valve, to open the first spray circuits.
S013, the 4th control valve conducting refrigerant, refrigerant is sprayed by the first spray circuits, is increased in double-cylinder variable-capacity compressor
Refrigerant, accelerate the flow velocity of refrigerant in heat-exchange system, return and perform step S005, continue to detect outdoor environment temperature T1.
S014, closes second and controls valve, stops injection refrigerant.
S015, keeps current operational mode.
S016, detection indoor environment temperature T2.
S017, judges whether indoor environment temperature T2 meets first pre-conditioned.If it is, performing step S018；If
It is no, return and perform step S015.
S018, control first controls valve, to close assistant cylinder.
S019, judges whether indoor environment temperature T2 meets second pre-conditioned.If it is, performing step S020；If
It is no, return and perform step S015.
S020, closes master cylinder, is then back to step S015, keeps current operational mode.
In sum, the control method of air-conditioning device according to embodiments of the present invention, first turns on master cylinder, postpones predetermined
Control first controls valve to open assistant cylinder after time t1, then detects outdoor environment temperature T1, and by outdoor environment temperature
T1 and the first preset temperature Tb1 and the second preset temperature Tb2 are compared, if outdoor environment temperature T1 is less than the first default temperature
Degree Tb1, into low-temperature heating pattern, opens second and controls valve, and refrigerant is turned on by the 3rd control valve, using spraying drainage system
It is that double-cylinder variable-capacity compressor injects refrigerant by the first spray circuits；If outdoor environment temperature T1 is more than the second preset temperature
Tb2, into high-temperature refrigeration pattern, opens second and controls valve, and refrigerant is turned on by the 4th control valve, is using drainage system is sprayed
Double-cylinder variable-capacity compressor injects refrigerant；If outdoor environment temperature T1 the first preset temperature Tb1 and the second preset temperature Tb2 it
Between, then close second and control valve, stop injection refrigerant, to save electric energy.
Meanwhile, detect indoor environment temperature T2, and the indoor environment temperature T2 that will detect and first pre-conditioned and the
Two it is pre-conditioned be compared, if indoor environment temperature T2 meets first pre-conditioned, control first controls valve, will aid in gas
Cylinder is closed, if indoor environment temperature T2 satisfactions second are pre-conditioned, closes master cylinder.Therefore, the sky of the embodiment of the present invention
The control method of tune device can not only meet heat exchange needs when high-temperature refrigeration or low-temperature heating pattern, and can make interior
The regulation of temperature tends towards stability, so as to improve comfort level.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the invention or example.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be with office
Combined in an appropriate manner in one or more embodiments or example.Additionally, in the case of not conflicting, the skill of this area
Art personnel can be tied the feature of the different embodiments or example described in this specification and different embodiments or example
Close and combine.
Although 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, changes, replacing and modification.
Claims (10)
1. a kind of air-conditioning device, it is characterised in that including：
Double-cylinder variable-capacity compressor, the double-cylinder variable-capacity compressor has exhaust outlet, gas returning port, blow vent, master cylinder and auxiliary gas
Cylinder, the blow vent is connected with the slide plate chamber of the assistant cylinder；
First control valve, the first control valve is connected to control respectively with the blow vent, the exhaust outlet and the gas returning port
The blow vent is made to be connected with one of in the exhaust outlet and the gas returning port；
Commutation component, the commutation component has the first valve port to the 4th valve port, first valve port and the second valve port and the 3rd
One of connection in valve port, the 4th valve port is connected with another in second valve port and the 3rd valve port,
First valve port is connected with the exhaust outlet；
Indoor heat exchanger, the first end of the indoor heat exchanger is connected with second valve port；
Outdoor heat exchanger, the outdoor heat exchanger has the first heat exchanging part and the second heat exchanging part, first heat exchanging part
First end be connected with the 3rd valve port, the second end of first heat exchanging part and the second end of the indoor heat exchanger it
Between be in series with restricting element；
Injection drainage system, the injection drainage system includes ejection end, drainage end and the port of export, and the ejection end passes through first
Spray circuits are connected with second heat exchanging part, and the drainage end is connected with the 4th valve port, the port of export with it is described
Gas returning port is connected, and the second control valve is in series with first spray circuits；
Second spray circuits, the first end of second spray circuits is connected with second heat exchanging part, second injection
Second end in loop is connected between second valve port and the indoor heat exchanger, and is in series with second spray circuits
Three control valves；
3rd spray circuits, the first end of the 3rd spray circuits is connected to first heat exchanging part and the restricting element
Between, the second end of the 3rd spray circuits is connected between the 3rd control valve and second heat exchanging part, described
The 4th control valve is in series with 3rd spray circuits.
2. air-conditioning device according to claim 1, it is characterised in that described first to control valve be triple valve.
3. air-conditioning device according to claim 1, it is characterised in that described second to control valve be electric expansion valve or electromagnetism
Valve.
4. air-conditioning device according to claim 1, it is characterised in that the described 3rd to control valve be from the described second injection
Check valve of second end in loop to one-way conduction on the direction of the first end of second spray circuits.
5. air-conditioning device according to claim 1, it is characterised in that the described 4th to control valve be from the 3rd injection
Check valve of the first end in loop to one-way conduction on the direction at the second end of the 3rd spray circuits.
6. air-conditioning device according to claim 1, it is characterised in that the commutation component is four-way valve.
7. a kind of control method of air-conditioning device, it is characterised in that the air-conditioning device is according to any one of claim 1-6
Described air-conditioning device, the control method comprises the following steps：
S1：Open the air-conditioning device and judge operational mode, the master cylinder operation controls the first control valve to open
The assistant cylinder；
S2：Detection outdoor environment temperature T1, and by outdoor environment temperature T1 and the first preset temperature Tb1 and the second preset temperature
Tb2 is compared；
S3：As T1 ＜ Tb1, then into low-temperature heating pattern, as T1 ＞ Tb2, then into high-temperature refrigeration pattern, in low temperature system
In heat pattern or high-temperature refrigeration pattern, the second control valve is opened, the 3rd control valve or the 4th control valve conducting refrigerant are with logical
Cross the first spray circuits and refrigerant is sprayed to the double-cylinder variable-capacity compressor；As Tb1≤T1≤Tb2, present mode of operation is kept,
In low-temperature heating pattern or high-temperature refrigeration pattern, as Tb1≤T1≤Tb2, then close second and control valve；
S4：When detecting that indoor environment temperature T2 satisfactions first are pre-conditioned, then control the first control valve described to close
Assistant cylinder；
S5：When detecting that the indoor environment temperature T2 satisfactions second are pre-conditioned, then the master cylinder is closed.
8. the control method of air-conditioning device according to claim 7, it is characterised in that in step sl, it is described opening
Delay predetermined time opens the assistant cylinder after master cylinder.
9. the control method of air-conditioning device according to claim 8, it is characterised in that the scheduled time is 60s.
10. the control method of air-conditioning device according to claim 7, it is characterised in that the first preset temperature Tb1 is
0 DEG C, the second predetermined temperature Tb2 is 40 DEG C.
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| CN105423669A (en) * | 2016-01-04 | 2016-03-23 | 珠海格力电器股份有限公司 | Variable-capacity compressor system, air conditioner and variable-capacity compressor control method |
| CN107883600B (en) * | 2016-09-30 | 2023-11-28 | 上海海立电器有限公司 | One-driving-two air conditioning system |
| CN106403349B (en) * | 2016-11-25 | 2022-04-15 | 广东美的制冷设备有限公司 | Double-cylinder variable-capacity air conditioning system and control method |
| CN107120861B (en) * | 2017-06-14 | 2023-12-05 | 珠海格力电器股份有限公司 | heat pump system |
| CN110057132A (en) * | 2019-04-30 | 2019-07-26 | 广东美的制冷设备有限公司 | Coolant system and air conditioner |
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| JP2008106738A (en) * | 2006-09-29 | 2008-05-08 | Fujitsu General Ltd | Rotary compressor and heat pump system |
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