CN207299635U - For multi-line system outdoor unit and there is its multi-line system - Google Patents
For multi-line system outdoor unit and there is its multi-line system Download PDFInfo
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- CN207299635U CN207299635U CN201721211812.6U CN201721211812U CN207299635U CN 207299635 U CN207299635 U CN 207299635U CN 201721211812 U CN201721211812 U CN 201721211812U CN 207299635 U CN207299635 U CN 207299635U
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Abstract
The utility model discloses a kind of outdoor unit for multi-line system and there is its multi-line system, outdoor unit includes：Compressor, three commutation components, the first outdoor heat exchanger, the second outdoor heat exchanger and economizer, one end of the first outdoor heat exchanger are connected with the 3rd valve port of the first commutation component；One end of second outdoor heat exchanger is connected with the 3rd valve port of the second commutation component；Economizer includes main heat exchange flow path and auxiliary heat exchange flow path, one end of main heat exchange flow path is connected with the other end of the first outdoor heat exchanger and the other end of the second outdoor heat exchanger respectively, the other end of main heat exchange flow path is connected with liquid pipe, the other end of main heat exchange flow path is connected by first throttle element with the entrance of auxiliary heat exchange flow path, and the outlet of auxiliary heat exchange flow path is connected with gas supplementing opening.According to the outdoor unit for multi-line system of the utility model embodiment, improve the cooling and warming ability for the multi-line system for using the outdoor unit and multi-line system can be allowd to switch under plurality of operating modes.
Description
Technical field
Refrigeration technology field is the utility model is related to, more particularly, to a kind of outdoor unit for multi-line system and is had
Its multi-line system.
Background technology
With the development of air-conditioning technical and the reinforcement of people's environmental protection concept, heat-reclamation multi-compressors system is increasingly subject to city
The welcome of field.However, under the low temperature condition of pole, the heating capacity of multi-line system is poor, it is impossible to meets user demand.
Utility model content
The utility model is intended at least solve one of technical problem existing in the prior art.For this reason, the utility model carries
Go out a kind of outdoor unit for multi-line system, the outdoor unit can effectively improve the low-temperature heating energy of multi-line system
Power.
The utility model also proposes a kind of multi-line system with above-mentioned outdoor unit.
According to the outdoor unit for multi-line system of the utility model first aspect embodiment, the multi-line system bag
Liquid pipe, low-pressure air pipe and high-pressure air pipe are included, the outdoor unit includes：Compressor, the compressor have exhaust outlet, gas returning port and
Gas supplementing opening, the gas returning port are connected with the low-pressure air pipe；Three commutation components, three commutations components are respectively first to change
To component, the second commutation component and the 3rd commutation component, each commutation component includes the first to the 3rd valve port, and described first
Commutate the first valve port of component, the first valve port of the second commutation component, the first valve port difference of the 3rd commutation component
It is connected with the exhaust outlet, the second valve port of the first commutation component, the second valve port of the second commutation component, described the
Second valve port of three commutation components is connected with the gas returning port respectively, the 3rd valve port of the 3rd commutation component and the high pressure
Tracheae is connected；First outdoor heat exchanger, one end of first outdoor heat exchanger and the 3rd valve port of the described first commutation component
It is connected；Second outdoor heat exchanger, one end of second outdoor heat exchanger are connected with the 3rd valve port of the described second commutation component；
Economizer, the economizer include main heat exchange flow path and auxiliary heat exchange flow path, and one end of the main heat exchange flow path is respectively with described
The other end of one outdoor heat exchanger is connected with the other end of second outdoor heat exchanger, the other end of the main heat exchange flow path with
The liquid pipe is connected, and the other end of the main heat exchange flow path passes through the entrance of first throttle element and the auxiliary flow path that exchanges heat
It is connected, the outlet of the auxiliary heat exchange flow path is connected with the gas supplementing opening.
According to the outdoor unit for multi-line system of the utility model embodiment, increased by the way that compressor is arranged to jet
Enthalpy compressor, and economizer is set, considerably improve the cooling and warming ability using the multi-line system of the outdoor unit, and mistake
The refrigerant of cold conditions can efficiently solve the problem of Super long tube ability attenuation problem and big indoor unit noise.Meanwhile by setting
The first outdoor heat exchanger and the second outdoor heat exchanger are put, and the first outdoor heat exchanger and the second outdoor heat exchanger are passed through respectively
First commutation component and the second commutation component are connected with the exhaust outlet of compressor, it is possible to achieve the piecemeal control of outdoor heat exchanger,
Multi-line system is switched to tackle the requirement under different load under plurality of operating modes.
Some embodiments according to the present utility model, outdoor unit further include oil eliminator, and the oil eliminator includes first
Import, refrigerant exit and oil export, first import are connected with the exhaust outlet, and the refrigerant exit is respectively with described first
First valve port of commutation component, the first valve port of the second commutation component, the first valve port of the 3rd commutation component are connected,
The oil export is connected with the gas returning port.
Further, flow regulator is equipped between the oil export and the gas returning port.
Some further embodiments according to the present utility model, outdoor unit further include gas-liquid separator, the gas-liquid separation
Device includes the second import and gas vent, second import the second valve port with the described first commutation component, described the respectively
Second valve port of two commutation components, the second valve port of the 3rd commutation component are connected, the gas vent and the gas returning port
It is connected.
Some embodiments according to the present utility model, outdoor unit further comprises adjusting pipeline, described to adjust the one of pipeline
End is connected with second import, and the other end is connected with the outlet of the auxiliary heat exchange flow path, and the adjusting pipeline is equipped with first
Control valve, the outlet of the auxiliary heat exchange flow path is with being equipped with second control in parallel with first control valve between the gas supplementing opening
Valve.
Alternatively, first control valve and second control valve are solenoid valve.
Some embodiments according to the present utility model, the exhaust outlet and the gas returning port of the compressor pass through hot gas
Bypass solenoid valve connects.
Specifically, the commutation component is triple valve or four-way valve.
According to the multi-line system of the utility model second aspect embodiment, including：According to the utility model above-mentioned first
The outdoor unit of aspect embodiment；With at least two indoor units, the outdoor unit and the indoor unit pass through the liquid pipe, described low
Air pipe is connected with the high-pressure air pipe.
Some specific embodiments according to the present utility model, the outdoor unit are one or more, wherein, when indoor unit is
When multiple, multiple outdoor units are connected in parallel to each other.
According to the multi-line system of the utility model second aspect embodiment, by setting according to the utility model above-mentioned the
The outdoor unit of one side embodiment, improves the efficiency of multi-line system.
The additional aspect and advantage of the utility model will be set forth in part in the description, partly by from following description
In become obvious, or recognized by the practice of the utility model.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the utility model will in the description from combination accompanying drawings below to embodiment
Become obvious and be readily appreciated that, wherein：
Fig. 1 is the schematic diagram according to the multi-line system of the utility model embodiment；
Fig. 2 is the schematic diagram according to the multi-line system of the utility model another embodiment.
Reference numeral：
Multi-line system 1000,
Outdoor unit 100,
Compressor 1, exhaust outlet a, gas returning port b, gas supplementing opening c,
First commutation component 21, the second commutation component 22, the 3rd commutation component 23,
First outdoor heat exchanger 3,
Second outdoor heat exchanger 4,
Economizer 5, main heat exchange flow path 51, auxiliary heat exchange flow path 52,
First throttle element 61, the second restricting element 62, the 3rd restricting element 63, the 4th restricting element 64, the 5th throttling
Element 65,
Oil eliminator 7, the first import o, refrigerant exit q, oil export p,
Flow regulator 8, the first capillary 81, oil return solenoid valve 82,
Gas-liquid separator 9, the second import r, the second import s,
Adjusting pipeline 101, the first control valve 102, the second control valve 103, hot gas bypass solenoid valve 104,
First indoor unit 200, the first indoor heat exchanger 201, the first switching device 202, the first switching valve 2021, second cuts
Valve 2022 is changed,
Second indoor unit 300, the second indoor heat exchanger 301, the second switching device 302, the 3rd switching valve 3021, the 4th cuts
Valve 3022 is changed,
Liquid pipe 400, high-pressure air pipe 500, low-pressure air pipe 600.
Embodiment
The embodiment of the utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is same or like element.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and it is not intended that to the utility model
Limitation.
In the description of the utility model, it is to be understood that the orientation or position relationship of the instruction such as term "left", "right"
Based on orientation shown in the drawings or position relationship, to be for only for ease of description the utility model and simplifying description, without referring to
Show or imply that the device of meaning or element there must be specific orientation, with specific azimuth configuration and operation, therefore cannot manage
Solve as the limitation to the utility model.In addition, define " first ", the feature of " second " can express or implicitly include one
A or more this feature.In the description of the utility model, unless otherwise indicated, " multiple " are meant that two or two
More than.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in the description of the utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can mechanically connect or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning of the language in the utility model.
The outdoor unit for multi-line system 1000 below with reference to Fig. 1-Fig. 2 descriptions according to the utility model embodiment
100.Wherein, multi-line system 1000 can be Three-pipe heat recovery multi-connected machine system.Multi-line system 1000 includes liquid pipe
400th, low-pressure air pipe 600 and high-pressure air pipe 500, outdoor unit 100 pass through liquid pipe 400, low-pressure air pipe 600 and high-pressure air pipe 500, cold
Matchmaker flows to switching device, and assembling is combined into heat-reclamation multi-compressors system 1000 jointly with multiple indoor units, for adjusting Indoor Temperature
Degree.
As shown in Figure 1, the outdoor unit for multi-line system 1000 according to the utility model first aspect embodiment
100, including 1, three commutation component of compressor, the first outdoor heat exchanger 3, the second outdoor heat exchanger 4 and economizer 5.
Specifically, compressor 1 has exhaust outlet a, gas returning port b and gas supplementing opening c, and gas returning port b is connected with low-pressure air pipe 600.
For example, compressor 1 can be air injection enthalpy-increasing compressor.
Three commutation components are respectively the first commutation component 21, second commutation commutation component 23 of component 22 and the 3rd, each
Commutation component includes the first to the 3rd valve port.Specifically, each commutation component includes the first valve port, the second valve port and the 3rd valve
Mouthful.3rd valve port is switchably connected with the first valve port and the second valve port.Thus, it is possible to conveniently realize cutting for refrigerant flow direction
Change.
Alternatively, the component that commutates can be triple valve or four-way valve.Wherein, when the component that commutates is four-way valve, four-way
Valve further includes the 4th valve port, and the 4th valve port can be connected by capillary with the second valve port, play cut-off.
First valve port d of the first commutation component 21, the first valve port h of the second commutation component 22, the 3rd commutation component 23
First valve port k is connected with exhaust outlet a respectively, the second valve port e of the first commutation component 21, the second valve port of the second commutation component 22
I, the second valve port m of the 3rd commutation component 23 is connected with gas returning port b respectively, the 3rd valve port n and high pressure of the 3rd commutation component 23
Tracheae 500 is connected.
Referring to Figures 1 and 2, the first valve port d of the first commutation component 21, the first valve port h of the second commutation component 22, the 3rd
First valve port k of commutation component 23 is connected in parallel at exhaust outlet a, the second valve port e of the first commutation component 21, the second commutation group
Second valve port i of part 22, the second valve port m of the 3rd commutation component 23 are connected in parallel at gas returning port b.Thus, pressed through compressor 1
Refrigerant after contracting can flow to the first valve port d of the first commutation component 21, the first valve port of the second commutation component 22 from exhaust outlet a
K, it is at least one in the first valve port m of the 3rd commutation component 23.
One end (for example, left end in Fig. 1) of first outdoor heat exchanger 3 and the 3rd valve port f phases of the first commutation component 21
Even, one end (for example, left end in Fig. 1) of the second outdoor heat exchanger 4 is connected with the 3rd valve port j of the second commutation component 22.The
One outdoor heat exchanger 3 and the second outdoor heat exchanger 4 may be used as condenser or evaporator.
For example, multi-line system 1000 has pure refrigeration mode, pure heating mode and cooling and warming mixed mode.Pure refrigeration
Pattern refers to that the indoor unit of operation all freezes；Pure heating mode refers to that the indoor unit of operation is all heated；Refrigeration
Heating mixed mode refers to that a part of indoor unit is freezed and a part of indoor unit is heated.
Wherein, when multi-line system 1000 runs hybrid refrigeration heating mode, changed outside the first outdoor heat exchanger 3 and second Room
One of them in hot device 4 may be used as evaporator, another in the first outdoor heat exchanger 3 and the second outdoor heat exchanger 4 can
For use as condenser；When multi-line system 1000 runs pure refrigeration mode, the first outdoor heat exchanger 3 and the second outdoor heat exchanger 4
Condenser can be both functioned as；When multi-line system 1000 runs pure heating mode, the first outdoor heat exchanger 3 and the second outdoor heat exchange
Device 4 can both function as evaporator.Thus, the first outdoor heat exchanger 3 and the second outdoor heat exchanger 4 can be combined as condenser+cold
Condenser, condenser+evaporator, evaporator+evaporator, so that multi-line system 1000 switches under plurality of operating modes, and then
The requirement under different load can be tackled.
For example, when the first outdoor heat exchanger 3 is used as evaporator, when the second outdoor heat exchanger 4 is used as condenser, first commutates
Second valve port e of component 21 is connected with the 3rd valve port f, and the first valve port h of the second commutation component 22 is connected with the 3rd valve port j, the
First valve port k of three commutation components 23 is connected with the 3rd valve port n；When the first outdoor heat exchanger 3 is used as condenser, second Room is changed outside
When heat is used as evaporator, the first valve port d of the first commutation component 21 is connected with the 3rd valve port f, and the second of the second commutation component 22
Valve port i is connected with the 3rd valve port j, and the first valve port k of the 3rd commutation component 23 is connected with the 3rd valve port n；When the first outdoor heat exchange
When 3 and second outdoor heat exchanger 4 of device both functions as condenser, the first valve port d of the first commutation component 21 is connected with the 3rd valve port f,
First valve port h of the second commutation component 22 is connected with the 3rd valve port j, the second valve port m and the 3rd valve port n of the 3rd commutation component 23
Connection；When the first outdoor heat exchanger 3 and the second outdoor heat exchanger 4 both function as evaporator, the second valve of the first commutation component 21
Mouth e is connected with the 3rd valve port f, and the second valve port i of the second commutation component 22 is connected with the 3rd valve port j, the 3rd commutation component 23
First valve port k is connected with the 3rd valve port n.Wherein, the flow direction of the refrigerant under different operational modes of multi-line system 1000 will be under
It is described in detail in text.
Economizer 5 includes main heat exchange flow path 51 and auxiliary heat exchange flow path 52, and one end of main heat exchange flow path 51 is (for example, in Fig. 1
Left end) respectively with the other end (for example, right end in Fig. 1) of the first outdoor heat exchanger 3 and the other end of the second outdoor heat exchanger 4
(for example, right end in Fig. 1) is connected, and the other end (for example, right end in Fig. 1) of main heat exchange flow path 51 is connected with liquid pipe 400, main
The above-mentioned other end of heat exchange flow path 51 is connected by first throttle element 61 with the entrance of auxiliary heat exchange flow path 52, auxiliary heat exchange flow path 52
Outlet be connected with gas supplementing opening c.Economizer 5 can be used for jet overheat and liquid refrigerants supercooling.
Specifically, the is equipped between above-mentioned one end of the above-mentioned other end and the main heat exchange flow path 51 of the first outdoor heat exchanger 3
Two restricting elements 62, the 3rd is equipped between above-mentioned one end of the above-mentioned other end and the main heat exchange flow path 51 of the second outdoor heat exchanger 4
Restricting element 63.Alternatively, first throttle element 61, the second restricting element 62 and the 3rd restricting element 63 can be electronic expansion
Valve, but not limited to this.
With reference to Fig. 1, the above-mentioned other end of the above-mentioned other end of the first outdoor heat exchanger 3 and the second outdoor heat exchanger 4 is in parallel
It is connected afterwards with above-mentioned one end of main heat exchange flow path 51.Wherein, the entrance and above-mentioned the one of main heat exchange flow path 51 of auxiliary heat exchange flow path 52
End positioned at the same side (for example, left side in Fig. 1) of economizer 5, outlet and the main heat exchange flow path 51 of auxiliary heat exchange flow path 52 it is upper
State the same side (for example, right side in Fig. 1) that the other end is located at economizer 5.Thus, in cooling mode, main heat exchange flow path 51
It is identical with flowing to for the refrigerant in auxiliary heat exchange flow path 52, in a heating mode, in main heat exchange flow path 51 and auxiliary heat exchange flow path 52
Refrigerant flows to refrigerant following current under refrigerating state on the contrary, i.e. in main heat exchange flow path 51 and auxiliary heat exchange flow path 52, in heating shape
Adverse current, thereby may be ensured that heat transfer temperature difference enough under heating state under state.
For example, in cooling mode, the refrigerant flowed out through the first outdoor heat exchanger 3 or the second outdoor heat exchanger 4 is changed through master
After hot flowpath 51 is exchanged heat into economizer 5, it is divided into two-way：Corresponding interior is directly wherein flowed to by liquid pipe 400 all the way
Heat exchanger, another way flow to the entrance of auxiliary heat exchange flow path 52 after 61 reducing pressure by regulating flow of first throttle element, are again introduced into economizer 5
Heat absorption evaporation is inside carried out, the gas supplementing opening c of the refrigerant steam flow compressor 1 after evaporation, realizes air injection enthalpy-increasing.Thus, improve
The refrigerating capacity and efficiency of multi-line system 1000.
In a heating mode, it is divided into two-way from the refrigerant of indoor heat exchanger outflow：Wherein all the way through main heat exchange flow path 51 into
Enter economizer 5 to exchange heat, entrance of the another way through auxiliary heat exchange flow path 52 after 61 reducing pressure by regulating flow of first throttle element enters warp
Heat absorption evaporation is carried out in Ji device 5, the gas supplementing opening c of the refrigerant steam flow compressor 1 after evaporation, realizes air injection enthalpy-increasing.Thus, solve
Determine the problems such as back pressure is low, cold medium flux is few, compression ratio is high under low temperature environment, improved low-temperature heating capacity and multi-connected machine system
The reliability of system 1000.
According to the outdoor unit 100 for multi-line system 1000 of the utility model embodiment, by the way that compressor 1 is set
For air injection enthalpy-increasing compressor 1, and economizer 5 is set, considerably improves the multi-line system 1000 using the outdoor unit 100
Cooling and warming ability, and can to efficiently solve Super long tube ability attenuation problem and indoor unit noise big for the refrigerant of supercooled state
Problem.Meanwhile by setting the first outdoor heat exchanger 3 and the second outdoor heat exchanger 4, and cause the first outdoor heat exchanger 3 and the
Two outdoor heat exchangers 4 are connected by the first commutation commutation component 22 of component 21 and second with the exhaust outlet a of compressor 1 respectively, can
To realize that the piecemeal of outdoor heat exchanger controls so that multi-line system 1000 can switch to tackle not under plurality of operating modes
With the requirement under load.
Some embodiments according to the present utility model, outdoor unit 100 further include oil eliminator 7, and oil eliminator 7 includes first
Import o, refrigerant exit q and oil export p, the first import o are connected with exhaust outlet a, refrigerant exit q respectively with the first commutation component 21
The first valve port d, second commutation component 22 the first valve port h, the 3rd commutation component 23 the first valve port k be connected, oil export p with
Gas returning port b is connected.
Thus, from the exhaust outlet a of compressor 1 refrigerant for being mixed with lubricating oil discharged can be introduced into oil eliminator 7 into
Row separation, the lubricating oil separated flows to gas returning port b by oil export p and is expelled back into compressor 1, the refrigerant separated from
Refrigerant exit q flows to the first commutation component 21, second commutation commutation component 23 of component 22 and the 3rd, and then can compress discharge
The lubricating oil of machine 1 is recycled, and is avoided compressor 1 from breaking down because oil starvation is run, is improved the operation of outdoor unit 100
Reliability.
Further, flow regulator 8 is equipped between oil export p and gas returning port b.For example, the one of the utility model
In a specific embodiment, flow regulator 8 can be the first capillary 81 and oil return solenoid valve 82 being connected in series.Certainly,
It is understood that in another embodiment of the utility model, flow regulator 8 can also be flow control valve.By
This, the return flow that can adjust lubricating oil according to being actually needed, improves the flexibility of outdoor unit 100.
Some further embodiments according to the present utility model, outdoor unit 100 further include gas-liquid separator 9, gas-liquid separation
Device 9 includes the second import r and gas vent s, the second import r the second valve port e with the first commutation component 21, the second commutation respectively
Second valve port i of component 22, the second valve port m of the 3rd commutation component 23 are connected, and gas vent s is connected with gas returning port b.Thus,
By equipped with gas-liquid separator 9, the second valve port i of the second valve port e, the second commutation component 22 from the first commutation component 21, the
The refrigerant of the second valve port m discharges of three commutation components 23, which can be introduced into gas-liquid separator 9, carries out gas-liquid separation, separates
Gaseous coolant be drained into from gas vent s in compressor 1 so that efficiently avoid compressor 1 occur liquid hit phenomenon, into one
Improve to step the operational reliability of outdoor unit 100.
Some embodiments according to the present utility model, outdoor unit 100 further comprise adjusting pipeline 101, adjusting pipeline 101
One end be connected with the second import r, adjust pipeline 101 the other end with it is auxiliary heat exchange flow path 52 outlet be connected, adjusting pipeline 101
The first control valve 102 is equipped with, is equipped between the outlet of auxiliary heat exchange flow path 52 and gas supplementing opening c in parallel with the first control valve 102
Second control valve 103.Thus, it is segmented into two-way from the refrigerant of the outlet outflow of auxiliary heat exchange flow path 52：Flow direction compression all the way
The gas supplementing opening c of machine 1 realizes air injection enthalpy-increasing, and another way can enter gas-liquid separator 9 and carry out gas-liquid separation, and the gaseous state after separation is cold
Gas returning port b of the matchmaker through compressor 1 is flowed in compressor 1, so that jet amount on the one hand can be adjusted, is effectively improved multi-connected machine
The efficiency of system 1000, on the other hand can prevent the liquid in refrigerant from causing damage to compressor 1, further improve
The operational reliability of outdoor unit 100.
For example, when multi-connected machine starts, the second control valve 103 can be first closed, the first control valve 102 is opened, makes auxiliary change
The refrigerant of the outlet outflow of hot flowpath 52 is after entering gas-liquid separator 9 and carrying out gas-liquid separation, the gas returning port b streams through compressor 1
Into compressor 1, it efficiently avoid the liquid refrigerants being mingled with from the refrigerant that auxiliary heat exchange flow path 52 flows out and compressor 1 caused
Infringement.
Alternatively, the first control valve 102 and the second control valve 103 are solenoid valve.First control valve 102 and the second control valve
103 aperture is adjustable.It is simple in structure, it is easy to control.
Some embodiments according to the present utility model, the exhaust outlet a and gas returning port b of compressor 1 pass through hot-gas bypass electromagnetism
Valve 104 connects.Specifically, hot gas bypass solenoid valve 104 can be connected to the refrigerant exit q and gas-liquid separator 9 of oil eliminator 7
Gas vent s between.Thus, it is possible to improve discharge superheat by hot gas bypass solenoid valve 104, realize under extreme high pressure
The functions such as pressure release, quick startup.
According to the outdoor unit 100 for multi-line system 1000 of the utility model embodiment, use is considerably improved
The cooling and warming ability of the multi-line system 1000 of the outdoor unit 100, and the refrigerant of supercooled state can efficiently solve Super long tube
The problem of ability attenuation problem and big indoor unit noise, while can realize the piecemeal control of outdoor heat exchanger so that it is multi-joint
Machine system 1000 can switch to tackle the requirement under different load under plurality of operating modes.
According to the multi-line system 1000 of the utility model second aspect embodiment, including according to the utility model above-mentioned
100 and at least two indoor unit of outdoor unit of one side embodiment, outdoor unit 100 pass through liquid pipe 400, low-pressure air pipe with indoor unit
600 are connected with high-pressure air pipe 500.For example, in a specific embodiment of the utility model, multi-line system 1000 includes two
A indoor unit.For convenience of description, multi-line system 1000 is transported so that multi-line system 1000 includes two indoor units as an example below
The flow direction of refrigerant illustrates under row different mode.
With reference to Fig. 1, two indoor units are respectively the first indoor unit 200 and the second indoor unit 300.First indoor unit 200 wraps
The first indoor heat exchanger 201, the first switching device 202 and the 4th restricting element 64 are included, the second indoor unit 300 is included in second Room
Heat exchanger 301, the second switching device 302 and the 5th restricting element 65.First switching device 202 includes 2021 He of the first switching valve
Second switching valve 2022, the second switching device 302 include the 3rd switching valve 3021 and the 4th switching valve 3022.
Wherein, one end (for example, left end in Fig. 1) of the first indoor heat exchanger 201 passes through the 4th restricting element 64 and liquid
Pipe 400 is connected, and the other end (for example, right end in Fig. 1) of the first indoor heat exchanger 201 is connected with high-pressure air pipe 500, second Room
One end (for example, left end in Fig. 1) of interior heat exchanger 301 is connected by the 5th restricting element 65 with liquid pipe 400, is changed in second Room
The other end (for example, right end in Fig. 1) of hot device 301 is connected with high-pressure air pipe 500.First switching valve 2021 and the 3rd switching valve
3021 are connected between the above-mentioned other end of the above-mentioned other end of the first indoor heat exchanger 201 and the second indoor heat exchanger 301, the
Two switching valves 2022 and the 4th switching valve 3022 are connected on heat exchange in the above-mentioned other end and second Room of the first indoor heat exchanger 201
Between the above-mentioned other end of device 301, and connect after the first switching valve 2021 and the 3rd switching valve 3021 with connect after second
2022 and the 4th switching valve 3022 of switching valve is connected in parallel on the above-mentioned other end and the second indoor heat exchanger of the first indoor heat exchanger 201
Between the 301 above-mentioned other end.
Thus, it is possible to change the flow direction of refrigerant by the first switching device 202 and the second switching device 302, make outdoor unit
It is connected as freezing or heating circulation between 100 and indoor unit.
For example, when multi-line system 1000 runs pure refrigeration mode, the first switching valve 2021 and the 3rd can be opened and cut
Valve 3021 is changed, closes the second switching valve 2022 and the 4th switching valve 3022, the first valve port d and the 3rd valve of the first commutation component 21
Mouthful f connection, the first valve port h of the second commutation component 22 connects with the 3rd valve port j, the 3rd commutate component 23 the second valve port m and
3rd valve port n is connected.First outdoor heat exchanger 3 and the second outdoor heat exchanger 4 can both function as condenser, the first indoor heat exchanger
201 and second indoor heat exchanger 301 can both function as evaporator, refrigerant at this time flow direction is as follows：
From the refrigerant that the exhaust outlet a of compressor 1 is discharged into the progress Oil-gas Separation of oil eliminator 7, in the refrigerant after separation
A part flow to the first outdoor heat exchanger 3 and condensed, another part in refrigerant after separation flows to the second outdoor heat exchange
Device 4 is condensed, through 3 condensed refrigerant of the first outdoor heat exchanger and the refrigerant difference after the heat exchange of the second outdoor heat exchanger 4
After the second restricting element 62 and 63 reducing pressure by regulating flow of the 3rd restricting element, into the main heat exchange flow path 51 of economizer 5, from main heat exchange
The a portion for the refrigerant that flow path 51 flows out flows to the first indoor heat exchanger 201 and the second indoor heat exchanger 301 exchanges heat,
Refrigerant after heat exchange flows back to after low-pressure air pipe 600 flows to the progress gas-liquid separation of gas-liquid separator 9 from the gas returning port b of compressor 1
Compressor 1；Another part of the refrigerant flowed out from main heat exchange flow path 51 enters auxiliary change after 61 reducing pressure by regulating flow of first throttle element
Hot flowpath 52 carries out heat absorption evaporation, and gas supplementing opening c of the gaseous coolant through compressor 1 after heat absorption evaporation enters compressor 1 and realize spray
Gas increasing enthalpy.And so on, kind of refrigeration cycle is formed.
When multi-line system 1000 runs pure heating mode, the second switching valve 2022 and the 4th switching valve can be opened
3022, close the first switching valve 2021 and the 3rd switching valve 3021, the second valve port e and the 3rd valve port f of the first commutation component 21
Connection, the second valve port i of the second commutation component 22 are connected with the 3rd valve port j, the first valve port k and the 3rd of the 3rd commutation component 23
Valve port n is connected.First outdoor heat exchanger 3 and the second outdoor heat exchanger 4 can both function as evaporator, the first indoor heat exchanger 201
Condenser can be both functioned as with the second indoor heat exchanger 301, refrigerant flow direction at this time is as follows：
The refrigerant discharged from the exhaust outlet a of compressor 1 enters oil eliminator 7 and carries out Oil-gas Separation, the refrigerant warp after separation
High-pressure air pipe 500 flows to the first indoor heat exchanger 201 and the second indoor heat exchanger 301 is condensed, through the first indoor heat exchanger
201 condensed refrigerants and through the second indoor heat exchanger 301 heat exchange after refrigerant respectively through the 4th restricting element 64 and Section five
After 65 reducing pressure by regulating flow of fluid element and mixing, the main heat exchange flow path 51 of economizer 5 is partly into, another part is through first throttle member
Enter the auxiliary heat exchange flow path 52 of economizer 5 after 61 reducing pressure by regulating flow of part.Wherein, the refrigerant flowed out from main heat exchange flow path 51 flows to respectively
First outdoor heat exchanger 3 and the second outdoor heat exchanger 4 exchange heat, and the refrigerant after heat exchange carries out gas-liquid point through gas-liquid separator 9
From rear, compressor 1 is flowed back to from the gas returning port b of compressor 1；Refrigerant after 61 reducing pressure by regulating flow of first throttle element enters auxiliary heat exchange
Flow path 52 carries out heat absorption evaporation, and gas supplementing opening c of the gaseous coolant through compressor 1 after heat absorption evaporation realizes jet into compressor 1
Increasing enthalpy.And so on, heating circulation is formed.
When 1000 running refrigerating and heating mixed mode of multi-line system, changed in the first indoor heat exchanger 201 and second Room
One of them of hot device 301 can be formed with one of combination in the first outdoor heat exchanger 3 and the second outdoor heat exchanger 4 and made
Another of SAPMAC method, the first indoor heat exchanger 201 and the second indoor heat exchanger 301 can be with the first outdoor heat exchangers 3 and
Another combination in two outdoor heat exchangers 4 forms heating circulation.
Formed and freezed as condenser using the first indoor heat exchanger 201 as evaporator and the first outdoor heat exchanger 3 below
Circulation, the second indoor heat exchanger 301 are formed exemplified by heating circulation as evaporator and retouched as condenser and the second outdoor heat exchanger 4
State the flow direction of refrigerant.
For example, the first switching valve 2021 and the 4th switching valve 3022 can be opened, the second switching valve 2022 and the 3rd is closed
Switching valve 3021, the first valve port d of the first commutation component 21 are connected with the 3rd valve port f, the second valve port i of the second commutation component 22
Connected with the 3rd valve port j, the first valve port k of the 3rd commutation component 23 is connected with the 3rd valve port n.
From the refrigerant that the exhaust outlet a of compressor 1 is discharged into the progress Oil-gas Separation of oil eliminator 7, in the refrigerant after separation
A part flow to the second indoor heat exchanger 301 through high-pressure air pipe 500 and condensed, another part in refrigerant after separation into
Enter the first outdoor heat exchanger 3 to be condensed.Wherein, through 301 condensed refrigerant of the second indoor heat exchanger through the 5th restricting element
After 65 reducing pressure by regulating flow, the main heat exchange flow path 51 of economizer 5 is partly into, another part is through 61 reducing pressure by regulating flow of first throttle element
Enter the auxiliary heat exchange flow path 52 of economizer 5 afterwards, and the refrigerant flowed out from main heat exchange flow path 51 flows to the second outdoor heat exchanger 4 and carries out
Heat exchange, the refrigerant after heat exchange flow back to compressor 1 from the gas returning port b of compressor 1 after gas-liquid separator 9 carries out gas-liquid separation, pass through
Refrigerant after 61 reducing pressure by regulating flow of first throttle element enters auxiliary heat exchange flow path 52 and carries out heat absorption evaporation, and the gaseous state after heat absorption evaporation is cold
Gas supplementing opening c of the matchmaker through compressor 1 realizes air injection enthalpy-increasing into compressor 1.
Enter main heat exchange flow path 51 through 3 condensed refrigerant of the first outdoor heat exchanger, flowed out from main heat exchange flow path 51 cold
A part in matchmaker flows to the first indoor heat exchanger 201, and another part in the refrigerant flowed out from main heat exchange flow path 51 is through first
Enter auxiliary heat exchange flow path 52 after 61 reducing pressure by regulating flow of restricting element and carry out heat absorption evaporation, the gaseous coolant after heat absorption evaporation is through compressor
1 gas supplementing opening c realizes air injection enthalpy-increasing into compressor 1.And so on, cooling and warming circulation is formed.
It is understood that in running refrigerating and heating mixing mixed mode, can also be by 201 He of the first indoor heat exchanger
One of them in second indoor heat exchanger 301 is used as condenser, and by the first indoor heat exchanger 201 and the second indoor heat exchanger
Another in 301 is used as evaporator, and the first outdoor heat exchanger 3 and the second outdoor heat exchanger 4 do not work, thus, equally
It can realize that cooling and warming circulates.
For example, be used as condenser when the first indoor heat exchanger 201, when the second indoor heat exchanger 301 is used as evaporator, i.e., the
One indoor unit 200 is heating indoor unit, and the second indoor unit 300 is refrigeration indoor unit, and the first switching valve 2021 and the 3rd is cut at this time
Change valve 3021 to close, the second switching valve 2022 and the 4th switching valve 3022 are opened, the 3rd valve port f and the of the first commutation component 21
Two valve port e are connected, and the 3rd valve port j of the second commutation component 22 is connected with the second valve port i, the first valve port of the 3rd commutation component 23
K is connected with the 3rd valve port n.
Some specific embodiments according to the present utility model, outdoor unit 100 is one or more, when outdoor unit 100 is more
When a, multiple outdoor units 100 are connected in parallel to each other.For example, in the example of fig. 1, outdoor unit 100 is one, in the figure 2 example room
Outer machine 100 is connected in parallel to each other for two and two outdoor units 100.Thus, it is possible to further improve the energy of multi-line system 1000
Effect.
It is common for this area according to other compositions of the multi-line system 1000 of the utility model embodiment and operation
All it is known for technical staff, is not detailed herein.
According to the multi-line system 1000 of the utility model second aspect embodiment, by setting according on the utility model
The outdoor unit 100 of first aspect embodiment is stated, considerably improves the cooling and warming ability of multi-line system 1000, and supercooled state
Refrigerant the problem of can efficiently solving Super long tube ability attenuation problem and big indoor unit noise, while can realize outdoor
The piecemeal control of heat exchanger so that multi-line system 1000 can switch to tackle under different load under plurality of operating modes
It is required that.
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 to combine specific features, the knot that the embodiment or example describe
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 combine in an appropriate manner in any one or more embodiments or example.
While there has been shown and described that the embodiment of the utility model, it will be understood by those skilled in the art that：
These embodiments can be carried out with a variety of changes, modification in the case where not departing from the principle and objective of the utility model, replaced
And modification, the scope of the utility model are limited by claim and its equivalent.
Claims (10)
- A kind of 1. outdoor unit for multi-line system, it is characterised in that the multi-line system include liquid pipe, low-pressure air pipe and High-pressure air pipe, the outdoor unit include：Compressor, the compressor have exhaust outlet, gas returning port and gas supplementing opening, and the gas returning port is connected with the low-pressure air pipe；Three commutation components, three commutations component are respectively the first commutation component, the second commutation component and the 3rd commutation group Part, each commutation component include the first to the 3rd valve port, the first valve port of the first commutation component, second commutation First valve port of component, the first valve port of the 3rd commutation component are connected with the exhaust outlet respectively, the first commutation group Second valve port of part, it is described second commutation component the second valve port, it is described 3rd commutation component the second valve port respectively with it is described Gas returning port is connected, and the 3rd valve port of the 3rd commutation component is connected with the high-pressure air pipe；First outdoor heat exchanger, one end of first outdoor heat exchanger are connected with the 3rd valve port of the described first commutation component；Second outdoor heat exchanger, one end of second outdoor heat exchanger are connected with the 3rd valve port of the described second commutation component；Economizer, the economizer include main heat exchange flow path and auxiliary heat exchange flow path, one end of the main heat exchange flow path respectively with institute The other end for stating the first outdoor heat exchanger is connected with the other end of second outdoor heat exchanger, the main heat exchange flow path it is another End is connected with the liquid pipe, and the other end of the main heat exchange flow path passes through first throttle element and the auxiliary heat exchange flow path Entrance is connected, and the outlet of the auxiliary heat exchange flow path is connected with the gas supplementing opening.
- 2. the outdoor unit according to claim 1 for multi-line system, it is characterised in that further include oil eliminator, institute Stating oil eliminator includes the first import, refrigerant exit and oil export, and first import is connected with the exhaust outlet, the refrigerant Outlet the first valve port with the described first commutation component, the first valve port of the second commutation component, the 3rd commutation respectively First valve port of component is connected, and the oil export is connected with the gas returning port.
- 3. the outdoor unit according to claim 2 for multi-line system, it is characterised in that the oil export and described time Flow regulator is equipped between gas port.
- 4. the outdoor unit according to claim 1 for multi-line system, it is characterised in that gas-liquid separator is further included, The gas-liquid separator includes the second import and gas vent, second import respectively with the described first commutation component second Valve port, it is described second commutation component the second valve port, it is described 3rd commutation component the second valve port be connected, the gas vent with The gas returning port is connected.
- 5. the outdoor unit according to claim 4 for multi-line system, it is characterised in that further comprise regulation pipe Road, described one end for adjusting pipeline are connected with second import, and the other end is connected with the outlet of the auxiliary heat exchange flow path, described Adjust pipeline and be equipped with the first control valve, be equipped with and the described first control between the outlet of the auxiliary heat exchange flow path and the gas supplementing opening Second control valve of valve parallel connection processed.
- 6. the outdoor unit according to claim 5 for multi-line system, it is characterised in that first control valve and institute It is solenoid valve to state the second control valve.
- 7. the outdoor unit according to claim 1 for multi-line system, it is characterised in that the row of the compressor Gas port is connected with the gas returning port by hot gas bypass solenoid valve.
- 8. the outdoor unit according to claim 1 for multi-line system, it is characterised in that the commutation component is threeway Valve or four-way valve.
- A kind of 9. multi-line system, it is characterised in that including：According to the outdoor unit any one of claim 1-8；WithAt least two indoor units, the outdoor unit pass through the liquid pipe, the low-pressure air pipe and the high pressure with the indoor unit Tracheae is connected.
- 10. multi-line system according to claim 9, it is characterised in that the outdoor unit is one or more, wherein, When indoor unit is multiple, multiple outdoor units are connected in parallel to each other.
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| CN201721211812.6U CN207299635U (en) | 2017-09-19 | 2017-09-19 | For multi-line system outdoor unit and there is its multi-line system |
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| CN201721211812.6U CN207299635U (en) | 2017-09-19 | 2017-09-19 | For multi-line system outdoor unit and there is its multi-line system |
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