CN208059146U - Three control multi-line systems and its outdoor unit - Google Patents
Three control multi-line systems and its outdoor unit Download PDFInfo
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- CN208059146U CN208059146U CN201721819662.7U CN201721819662U CN208059146U CN 208059146 U CN208059146 U CN 208059146U CN 201721819662 U CN201721819662 U CN 201721819662U CN 208059146 U CN208059146 U CN 208059146U
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Abstract
The utility model discloses a kind of three control multi-line systems and its outdoor unit, outdoor unit is equipped with high-pressure liquid tube, low-pressure air pipe and high-pressure air pipe, and outdoor unit includes：Compressor, the first commutation component, the second commutation component, outdoor heat exchanger, heating device and control device.Heating device heats the refrigerant that gas returning port is flowed to from low-pressure air pipe, and control device is connected with heating device to be turned on and off with controlling heating device.The outdoor unit of three control multi-line system according to the present utility model, by the way that heating device and control device is arranged, control device can control heating device and be heated to low-pressure air pipe, so as to so that in low-pressure air pipe liquid refrigerants by it is thermal evaporation be gaseous coolant, liquid refrigerants is effectively prevented to enter generation " liquid hammer " phenomenon in compressor and damage compressor, the working performance of compressor is improved, and then improves the heat exchange property of outdoor unit.
Description
Technical field
The utility model is related to household electrical appliance technical fields, specifically, more particularly to a kind of three control multi-line systems
And its outdoor unit.
Background technology
In the related technology, for air-conditioning when outside air temperature is relatively low, outdoor heat exchanger can not form condensing high pressure, to produce
Refrigerant is pressed into interior pusher side by raw effective pressure difference from outer machine, indoor refrigerant would generally be caused on the low side in this way, after the heat absorption of indoor,
Refrigerant goes out indoor unit with superheat state as gas, but because the temperature of outdoor unit is too low, when a small amount of overheated gas meet to obtain it is low
It can be liquefied as returning to the low-pressure tank of outdoor compressor for low temperature subcooled liquid again when outdoor temperature, due to the cycle of system
The state of the too small refrigerant for causing to return to outdoor unit of amount is the saturation state with liquid, can not only be had an impact to the service life of compressor,
Simultaneously also because compressor have Wet Compression protection to cannot effective raising frequency, refrigerant circulation cannot be increased, system enters evil
Property cycle.
Utility model content
The utility model aims to solve at least one of the technical problems existing in the prior art.For this purpose, the utility model carries
Go out a kind of outdoor unit of three control multi-line system, the outdoor unit has the advantages that simple in structure, stable.
The utility model also proposes a kind of three control multi-line systems, and the three control multi-line system includes described above
Three control multi-line systems outdoor unit.
According to the outdoor unit of the three control multi-line systems of the utility model embodiment, the outdoor unit is equipped with high pressure liquid
Pipe, low-pressure air pipe and high-pressure air pipe, the outdoor unit include：Compressor, the compressor is equipped with exhaust outlet and gas returning port, described
Gas returning port is connected with the low-pressure air pipe；First commutation component, the first commutation component include the first valve port to third valve port,
First valve port is connected to second valve port and third valve port switching, first valve port and the exhaust outlet phase
Even, second valve port is connected with the low-pressure air pipe；Second commutation component, it is described second commutation component include first port extremely
Third port, the first port and the second port and third port switching are connected to, the first port with it is described
Exhaust outlet is connected, and the second port is connected with the low-pressure air pipe, and the third port is connected with the high-pressure air pipe；It is outdoor
Heat exchanger, the first end of the outdoor heat exchanger are connected with the third valve port, the second end of the outdoor heat exchanger with it is described
High-pressure liquid tube is connected；The heating device that refrigerant to flowing to the gas returning port from the low-pressure air pipe is heated；Control device,
The control device is connected with the heating device to be turned on and off with controlling the heating device.
According to the outdoor unit of the three control multi-line systems of the utility model embodiment, by the way that heating device and control is arranged
Device, control device can control heating device and be heated to low-pressure air pipe, so as to so that liquid refrigerants in low-pressure air pipe
By it is thermal evaporation be gaseous coolant, effectively prevent liquid refrigerants and enter in compressor generating " liquid hammer " phenomenon and damaging compression
Machine, improves the working performance of compressor, and then improves the heat exchange property of outdoor unit.
Some embodiments according to the present utility model, further include gas-liquid separator, the gas-liquid separator include entrance and
Gas vent, the entrance are connected by the first refrigerant pipeline with the low-pressure air pipe, and the gas vent passes through the second refrigerant
Pipeline is connected with the gas returning port.
In some embodiments of the utility model, the heating device includes first be located on the gas-liquid separator
Heating element.
Some embodiments according to the present utility model, first heating element are located at the shell of the gas-liquid separator
On outer wall.
In some embodiments of the utility model, the heating device includes to the refrigerant in first refrigerant pipeline
The second heating element heated.
Some embodiments according to the present utility model, the heating device include to the refrigerant in second refrigerant pipeline
The third heating element heated.
In some embodiments of the utility model, the outdoor heat exchanger is multiple, and the first commutation component is more
A, multiple outdoor heat exchangers are arranged in a one-to-one correspondence with multiple first commutation components, each first valve port and institute
Exhaust outlet is stated to be connected, each second valve port is connected with the low-pressure air pipe, each the third valve port with it is corresponding described in
Outdoor heat exchanger is connected.
According to the three control multi-line systems of the utility model embodiment, including：Outdoor unit, the outdoor unit are above-mentioned institute
The outdoor unit stated；Multiple indoor units, each indoor unit includes indoor heat exchanger, the first end of each indoor heat exchanger
It is connected with the low-pressure air pipe by the first control valve, the first end of each indoor heat exchanger passes through the second control valve and institute
It states high-pressure air pipe to be connected, the second end of each indoor heat exchanger is connected by restricting element with the high-pressure liquid tube.
According to the three control multi-line systems of the utility model embodiment, by the way that heating device and control device, control is arranged
Device processed can control heating device and be heated to low-pressure air pipe, so as to so that liquid refrigerants is by thermal evaporation in low-pressure air pipe
For gaseous coolant, effectively prevents liquid refrigerants and enter generation " liquid hammer " phenomenon in compressor and damage compressor, improve
The working performance of compressor, and then improve the working performance of three control multi-line systems.
The additional aspect and advantage of the utility model will be set forth in part in the description, partly will be from following description
In become apparent, or recognized by the practice of the utility model.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the utility model will in the description from combination following accompanying drawings to embodiment
Become apparent and is readily appreciated that, wherein：
Fig. 1 is the three control multi-line system structural schematic diagrams according to the utility model embodiment, wherein three control are multi-joint
System is in refrigeration mode, and direction shown in arrow is refrigerant flow direction；
Fig. 2 is the three control multi-line system structural schematic diagrams according to the utility model embodiment, wherein three control are multi-joint
System is in heating mode, and direction is refrigerant flow direction shown in arrow.
Reference numeral：
High-pressure liquid tube 110, low-pressure air pipe 120, high-pressure air pipe 130,
Compressor 20, exhaust outlet 210, gas returning port 220,
First commutation component 30, the first valve port 310, the second valve port 320, third valve port 330,
Second commutation component 40, first port 410, second port 420, third port 430,
Outdoor heat exchanger 50,
Heating device 60, the first heating element 610, the second heating element 620, third heating element 630,
Gas-liquid separator 70, entrance 710, gas vent 720, the first refrigerant pipeline 730, the second refrigerant pipeline 740,
Indoor unit 800, indoor heat exchanger 810, the first control valve 811, the second control valve 812,
Three control multi-line systems 1000.
Specific implementation mode
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and should not be understood as to the utility model
Limitation.
In the description of the present invention, it should be understood that term "upper", "lower", "front", "rear", "left", "right",
"bottom" "inner", "outside", etc. instructions orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, merely to just
In description the utility model and simplify description, specific side must be had by not indicating or implying the indicated device or element
Position, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.In addition, define " first ",
The feature of " second " can explicitly or implicitly include one or more this feature.In the description of the present invention,
Unless otherwise indicated, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, can also be electrical connection；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, it can understand above-mentioned art with concrete condition
The concrete meaning of language in the present invention.
Below with reference to Fig. 1 and Fig. 2 descriptions according to the outdoor of the three control multi-line systems 1000 of the utility model embodiment
Machine.
As depicted in figs. 1 and 2, outdoor unit is equipped with high-pressure liquid tube 110, low-pressure air pipe 120 and high-pressure air pipe 130.It needs
Bright, " high-pressure liquid tube 110, low-pressure air pipe 120 and high-pressure air pipe 130 " described here is multi-joint in three control according to refrigerant
What the flow direction of machine system 1000 defined, the concrete numerical value of pressure height defines when not being flowed according to refrigerant in pipe.Room
Outer machine includes：The commutation commutation of component 30, second of compressor 20, first component 40, outdoor heat exchanger 50, heating device 60 and control
Device (not shown).
Specifically, as depicted in figs. 1 and 2, compressor 20 be equipped with exhaust outlet 210 and gas returning port 22, gas returning port 220 with it is low
Air pipe 120 is connected.Refrigerant can be back in compressor 20 from gas returning port 220 and be compressed as a result, be pressed by compressor 20
Compressor 20 can be discharged from exhaust outlet 210 in high pressure gaseous refrigerant after contracting.
First commutation component 30 include the first valve port 310 to third valve port 330, the first valve port 310 and the second valve port 320 and
The switching connection of third valve port 330, the first valve port 310 are connected with exhaust outlet 210, and the second valve port 320 is connected with low-pressure air pipe 120.
It is cold can be adjusted to the break-make of third valve port 330 by the first commutation control of component 30 the first valve port 310 of switching for switching as a result,
The flow direction of matchmaker, to realize that three control multi-line systems 1000 need the different flow directions of refrigerant under refrigeration mode and heating mode
It asks.
Second commutation component 40 includes first port 410 to third port 430, first port 410 and second port 420 and
The switching connection of third port 430, first port 410 are connected with exhaust outlet 210, and second port 420 is connected with low-pressure air pipe 120,
Third port 430 is connected with high-pressure air pipe 130.Pass through the second commutation control of component 40 switching first port 410 to third as a result,
The break-make of port 430 can adjust the flow direction of switching refrigerant, to realize three control multi-line systems 1000 in refrigeration mode and system
Demand is flowed to the difference of refrigerant under heat pattern.
The first end of outdoor heat exchanger 50 is connected with third valve port 330, the second end and high-pressure liquid tube of outdoor heat exchanger 50
110 are connected.Heating device 60 heats the refrigerant that gas returning port 220 is flowed to from low-pressure air pipe 120, utilizes heating dress as a result,
The refrigerant set in 60 pairs of low-pressure air pipes 120 heats, and it is that gaseous state is cold that the liquid refrigerants in low-pressure air pipe 120 can be made, which to gasify,
Matchmaker prevents liquid refrigerants from entering " liquid hammer " phenomenon for causing compressor 20 in compressor 20, and influences the work of compressor 20
Performance.
Control device is connected with heating device 60 to be turned on and off with controlling heating device 60.Pass through control device as a result,
Being turned on and off for heating device 60 can be controlled, when in low-pressure air pipe 120, there are when liquid refrigerants, control device can be passed through
It opens heating device 60 to heat low-pressure air pipe 120, so that the liquid refrigerants in low-pressure air pipe 120 is gasified, prevent liquid cold
Matchmaker enters in compressor 20 and influences 20 working performance of compressor；When there is no liquid refrigerants or liquid in low-pressure air pipe 120
When refrigerant content very little, heating device 60 can be closed by control device, so as to reduce consumption.
According to the outdoor unit of the three control multi-line systems 1000 of the utility model embodiment, by the way that heating device 60 is arranged
And control device, control device can control heating device 60 and be heated to low-pressure air pipe 120, so as to so that low-pressure air pipe
In 120 liquid refrigerants by it is thermal evaporation be gaseous coolant, effectively prevent liquid refrigerants and enter in compressor 20 to cause compressor
20 Wet Compressions, improve the working performance of compressor 20, and then improve the heat exchange property of outdoor unit.
Some embodiments according to the present utility model, as depicted in figs. 1 and 2, outdoor unit can also include gas-liquid separator
70, gas-liquid separator 70 includes entrance 710 and gas vent 720, and entrance 710 passes through the first refrigerant pipeline 730 and low-pressure air pipe
120 are connected, and gas vent 720 is connected by the second refrigerant pipeline 740 with gas returning port 220.It is cold in low-pressure air pipe 120 as a result,
Matchmaker can enter from entrance 710 through the first refrigerant pipeline 730 and carry out gas-liquid separation in gas-liquid separator 70, by gas-liquid separation
The gaseous coolant obtained afterwards is discharged from gas vent 720, and enters to compression from gas returning port 220 by the second refrigerant pipeline 740
In machine 20.As a result, by the way that gas-liquid separator 70 is arranged, the liquid refrigerants content for being back to compressor 20 is effectively reduced, is improved
The stability that compressor 20 is run.
In some embodiments of the utility model, heating device 60 may include first be located on gas-liquid separator 70
Heating element 610.Thus, it is possible to using the first heating element 610 to the inside of gas-liquid separator 70 and gas-liquid separator 70
Refrigerant at entrance 710 and gas vent 720 is heated, and is effectively reduced the liquid refrigerants being back in compressor 20 and is contained
Amount, improves the working performance of compressor 20.
Some embodiments according to the present utility model, the first heating element 610 are located at the outer of the shell of gas-liquid separator 70
On wall.It is convenient for the fixing assembling of the first heating element 610 as a result,.Moreover, by being arranged the first heating element 610 in gas-liquid
On the periphery wall of the shell of separator 70, can utilize the first heating element 610 directly to the refrigerant in gas-liquid separator 70 into
Row heating reduces thermal loss waste.
In some embodiments of the utility model, heating device 60 may include to cold in the first refrigerant pipeline 730
The second heating element 620 that matchmaker is heated.As a result, by using the second heating element 620 in the first refrigerant pipeline 730
Refrigerant is heated, and it is gaseous coolant so that the liquid refrigerants in the first refrigerant pipeline 730 is gasified, and reduces the first refrigerant pipeline
Liquid refrigerants content in 730, improves the working performance of compressor 20.
Some embodiments according to the present utility model, heating device 60 include to the refrigerant in the second refrigerant pipeline 740 into
The third heating element 630 of row heating.As a result, by using third heating element 630 to the refrigerant in the second refrigerant pipeline 740
It is heated, it is gaseous coolant so that the liquid refrigerants in the second refrigerant pipeline 740 is gasified, and is reduced in the second refrigerant pipeline 740
Liquid refrigerants content, improve the working performance of compressor 20.
In some embodiments of the utility model, as depicted in figs. 1 and 2, outdoor heat exchanger 50 can be it is multiple, first
The component 30 that commutates can be multiple, and multiple outdoor heat exchangers 50 are arranged in a one-to-one correspondence with multiple first commutation components 30, Mei Ge
One valve port 310 is connected with exhaust outlet 210, and each second valve port 320 is connected with low-pressure air pipe 120, each third valve port 330 and phase
The outdoor heat exchanger 50 answered is connected.It is understood that by the way that multiple outdoor heat exchangers 50 are arranged, outdoor heat exchanger 50 is increased
Effective heat exchange area, and then improve the heat exchange property of outdoor heat exchanger 50.Pass through setting and multiple outdoor heat exchangers 50 1
One corresponding multiple first commutation components 30 can utilize the flow direction of correspondingly the first commutation control adjustment refrigerant of component 30, with
Realize that three control multi-line systems 1000 difference of refrigerant under refrigeration and heating mode flows to demand.
According to the three control multi-line systems 1000 of the utility model embodiment, three control multi-line systems 1000 include：
Outdoor unit and multiple indoor units 800.
Wherein, outdoor unit is above-mentioned outdoor unit, and each indoor unit 800 includes indoor heat exchanger 810, each interior heat exchange
The first end of device 810 is connected by the first control valve 811 with low-pressure air pipe 120.Thus, it is possible to be controlled by the first control valve 811
Break-make between indoor heat exchanger 810 and low-pressure air pipe 120 processed.The first end of each indoor heat exchanger 810 passes through the second control
Valve 812 is connected with high-pressure air pipe 130, thus, it is possible to control indoor heat exchanger 810 and high-pressure air pipe by the second control valve 812
Break-make between 130.The second end of each indoor heat exchanger 810 is connected by restricting element with high-pressure liquid tube 110.Lead to as a result,
Setting restricting element is crossed, the coolant throttle decompression in restricting element can be flowed through, adjust the flow parameter of refrigerant.
According to the three control multi-line systems 1000 of the utility model embodiment, filled by the way that heating device 60 and control is arranged
It sets, control device can control heating device 60 and be heated to low-pressure air pipe 120, so as to so that liquid in low-pressure air pipe 120
State refrigerant by it is thermal evaporation be gaseous coolant, effectively prevent liquid refrigerants and enter in compressor 20 generating " liquid hammer " phenomenon and damaging
Bad compressor 20, improves the working performance of compressor 20, and then improves the heat exchange property of outdoor unit.
According to the control method of the three control multi-line systems 1000 of the utility model embodiment, three control multi-line systems
1000 be three above-mentioned control multi-line systems 1000, and control method includes the following steps：
Outdoor environment temperature is detected when refrigeration mode；
When outdoor environment temperature is less than set temperature, control heating device is opened to be heated to refrigerant.It is sharp as a result,
With heating devices heat refrigerant, it is gaseous coolant to make liquid refrigerants gasification, effectively prevents liquid refrigerants and enters in compressor
The problem of influencing compressor performance.
When outdoor environment temperature is higher than set temperature, control heating device is closed.Thus, it is possible to reduce heating device
Heat waste, energy-saving consumption-reducing.
According to the control method of the three control multi-line systems 1000 of the utility model embodiment, when being back to compressor 20
Refrigerant in liquid refrigerants content it is higher when, can by control device open heating device 60 refrigerant is heated, make liquid
The gasification of state refrigerant is gaseous coolant, prevents from causing " liquid hammer " compressor 20；When liquid is cold in the refrigerant for being back to compressor 20
When matchmaker's content is smaller, heating device 60 can be closed by control device, so as to reduce the heat waste of heating device 60,
Energy-saving consumption-reducing.
Some embodiments according to the present utility model, can also include the following steps：When heating device is opened, sensing chamber
The low pressure of the low-pressure side of external heat exchanger calculates the return-air degree of superheat.It should be noted that " the return-air degree of superheat " described here
It is calculated by detecting back pressure and suction temperature, calculation is customary means, and details are not described herein.
When low pressure < first predetermined values A or return-air degree of superheat < the first setting value C, heating device keep it turning on shape
State.Thus, it is possible to be heated to liquid refrigerants, it is gaseous coolant to make liquid refrigerants gasification, prevents liquid refrigerants from entering in compressor,
Cause " liquid hammer " phenomenon.
When first predetermined value A≤low pressure≤second predetermined value B or the first setting value C≤low pressure≤second are set
When value D, when heating device supply voltage can timing reduce heating device supply voltage, when heating device supply voltage not
Adjustable time control refrigerating/heating apparatus interruption is opened.Thus, it is possible to reduce the heat waste of heating device, energy-saving consumption-reducing.
As low pressure > second predetermined values B or low pressure > the second setting value D, control heating device is closed by real
Verification, works as satisfaction：When low pressure > second predetermined values B or low pressure > the second setting value D, it is back in compressor
Liquid refrigerants content is seldom in refrigerant.The heat waste of heating device, energy-saving consumption-reducing can be reduced by closing heating device as a result,.
Referring to Fig. 1 and Fig. 2 with a specific embodiment detailed description according to three pipes of the utility model embodiment
The refrigeration work pattern and heating operating mode of multi-line system 1000 processed.
As shown in Figure 1, when three control multi-line systems 1000 are in refrigeration work pattern, from the high temperature of the discharge of compressor 20
High-pressure gaseous refrigerant flows to the first commutation component 30, and the first valve port 310 is connected to third valve port 330, high pressure gaseous refrigerant
Pass through the first valve port 310 successively and third valve port 330 enters in outdoor heat exchanger 50, high pressure gaseous refrigerant is changed in outdoor
After being exchanged heat in hot device 50, become high-pressure liquid refrigerant, high-pressure liquid refrigerant flows into high-pressure liquid tube 110 and enters to interior and changes
Hot device 810, evaporation endothermic in heat exchanger 810 indoors, to realize indoor refrigerating function.It exchanges heat by indoor heat exchanger 810
Refrigerant afterwards enters low-pressure air pipe 120, and the refrigerant in low-pressure air pipe 120 enters gas-liquid separator 70 from entrance 710, and refrigerant exists
Pass through gas-liquid separation in gas-liquid separator 70, gaseous coolant flows out gas-liquid separator 70 from gas vent 720, and from gas returning port
220 are back to compressor 20, complete the refrigeration cycle of refrigerant.Wherein, refrigerant flows through the first refrigerant pipeline 730, gas-liquid separator
70 and when the second refrigerant pipeline 740, the second heating element 620, the first heating element 610 and third heating element 630 are right respectively
It is heated, and is gaseous coolant to make liquid refrigerants gasification, be further reduced the content of liquid refrigerants, it is therefore prevented that compressor 20
" liquid hit phenomenon improves the working performance of compressor 20 for generation.
As shown in Fig. 2, when three control multi-line systems 1000 are in heating operating mode, from the high temperature of the discharge of compressor 20
High-pressure gaseous refrigerant flows to the second commutation component 40, and first port 410 is connected to third port 430, high pressure gaseous refrigerant
Pass through first port 410 successively and third port 430 enters in indoor heat exchanger 810, high pressure gaseous refrigerant is indoors
Heat release in heat exchanger 810 realizes indoor heating function.Refrigerant after heat exchange becomes high-pressure liquid refrigerant, high pressure
Liquid refrigerants flows into high-pressure liquid tube 110 and enters to outdoor heat exchanger 50, and heat exchange is carried out in outdoor heat exchanger 50.By
Refrigerant after outdoor heat exchanger 50 exchanges heat enters low-pressure air pipe 120, and the refrigerant in low-pressure air pipe 120 enters gas from entrance 710
Liquid/gas separator 70, refrigerant pass through gas-liquid separation in gas-liquid separator 70, and gaseous coolant flows out gas-liquid separation from gas vent 720
Device 70, and it is back to compressor 20 from gas returning port 220, complete the heating cycle of refrigerant.
Heating device 60 can be controlled to low pressure gas by the way that heating device 60 and control device, control device is arranged as a result,
Pipe 120 is heated, so as to so that in low-pressure air pipe 120 liquid refrigerants by it is thermal evaporation be gaseous coolant, effectively prevent liquid
State refrigerant enters in compressor 20 and generates " liquid hammer " phenomenon and damage compressor 20, improves the working performance of compressor 20,
And then improve the heat exchange property of outdoor unit.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot
Structure, material or feature are contained at least one embodiment or example of the utility model.In the present specification, to above-mentioned art
The schematic representation of language may not refer to the same embodiment or example.Moreover, description specific features, structure, material or
Person's feature can be combined in any suitable manner in any one or more of the embodiments or examples.
While there has been shown and described that the embodiments of the present invention, it will be understood by those skilled in the art that：
Can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and objective, modification, replaced
And modification, the scope of the utility model are limited by claim and its equivalent.
Claims (8)
1. a kind of outdoor unit of three control multi-line system, which is characterized in that the outdoor unit is equipped with high-pressure liquid tube, low-pressure air pipe
And high-pressure air pipe, the outdoor unit include：
Compressor, the compressor are equipped with exhaust outlet and gas returning port, and the gas returning port is connected with the low-pressure air pipe；
First commutation component, the first commutation component includes the first valve port, the second valve port and third valve port, first valve port
It is connected to second valve port and third valve port switching, first valve port is connected with the exhaust outlet, second valve
Mouth is connected with the low-pressure air pipe；
Second commutation component, the second commutation component includes first port, second port and third port, the first port
It is connected to the second port and third port switching, the first port is connected with the exhaust outlet, the second end
Mouth is connected with the low-pressure air pipe, and the third port is connected with the high-pressure air pipe；
Outdoor heat exchanger, the first end of the outdoor heat exchanger are connected with the third valve port, and the second of the outdoor heat exchanger
End is connected with the high-pressure liquid tube；
The heating device that refrigerant to flowing to the gas returning port from the low-pressure air pipe is heated；
Control device, the control device is connected with the heating device to be turned on and off with controlling the heating device.
2. the outdoor unit of three control multi-line system according to claim 1, which is characterized in that further include gas-liquid separation
Device, the gas-liquid separator include entrance and gas vent, and the entrance passes through the first refrigerant pipeline and the low-pressure air pipe phase
Even, the gas vent is connected by the second refrigerant pipeline with the gas returning port.
3. the outdoor unit of three control multi-line system according to claim 2, which is characterized in that the heating device includes
The first heating element being located on the gas-liquid separator.
4. the outdoor unit of three control multi-line system according to claim 3, which is characterized in that first heating element
It is located on the outer wall of the shell of the gas-liquid separator.
5. the outdoor unit of three control multi-line system according to claim 2, which is characterized in that the heating device includes
The second heating element that refrigerant in first refrigerant pipeline is heated.
6. the outdoor unit of three control multi-line system according to claim 2, which is characterized in that the heating device includes
The third heating element that refrigerant in second refrigerant pipeline is heated.
7. the outdoor unit of the three control multi-line systems according to any one of claim 1-6, which is characterized in that the room
External heat exchanger is multiple, and the first commutation component is multiple, multiple outdoor heat exchangers and multiple first commutation groups
Part is arranged in a one-to-one correspondence, and each first valve port is connected with the exhaust outlet, each second valve port and the low pressure gas
Pipe is connected, and each third valve port is connected with the corresponding outdoor heat exchanger.
8. a kind of three control multi-line systems, which is characterized in that including：
Outdoor unit, the outdoor unit are the outdoor unit according to any one of claim 1-7；
Multiple indoor units, each indoor unit includes indoor heat exchanger, and the first end of each indoor heat exchanger passes through the
One control valve is connected with the low-pressure air pipe, and the first end of each indoor heat exchanger passes through the second control valve and the high pressure
Tracheae is connected, and the second end of each indoor heat exchanger is connected by restricting element with the high-pressure liquid tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721819662.7U CN208059146U (en) | 2017-12-20 | 2017-12-20 | Three control multi-line systems and its outdoor unit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721819662.7U CN208059146U (en) | 2017-12-20 | 2017-12-20 | Three control multi-line systems and its outdoor unit |
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| CN208059146U true CN208059146U (en) | 2018-11-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107965853A (en) * | 2017-12-20 | 2018-04-27 | 广东美的暖通设备有限公司 | The outdoor unit and control method of three control multi-line systems |
-
2017
- 2017-12-20 CN CN201721819662.7U patent/CN208059146U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107965853A (en) * | 2017-12-20 | 2018-04-27 | 广东美的暖通设备有限公司 | The outdoor unit and control method of three control multi-line systems |
| CN107965853B (en) * | 2017-12-20 | 2024-06-14 | 广东美的暖通设备有限公司 | Outdoor unit of three-pipe multi-split air conditioner system and control method |
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