CN205619641U - Multi -split air conditioning system - Google Patents
Multi -split air conditioning system Download PDFInfo
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- CN205619641U CN205619641U CN201620406224.7U CN201620406224U CN205619641U CN 205619641 U CN205619641 U CN 205619641U CN 201620406224 U CN201620406224 U CN 201620406224U CN 205619641 U CN205619641 U CN 205619641U
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- heat exchanger
- electromagnetic valve
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- compressor
- valve
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 66
- 238000001816 cooling Methods 0.000 claims abstract description 141
- 239000007788 liquid Substances 0.000 claims abstract description 44
- 238000005057 refrigeration Methods 0.000 claims abstract description 28
- 239000002826 coolant Substances 0.000 claims description 34
- 239000006200 vaporizer Substances 0.000 claims description 28
- 238000009833 condensation Methods 0.000 claims description 7
- 230000005494 condensation Effects 0.000 claims description 7
- 230000004907 flux Effects 0.000 claims description 6
- 230000008676 import Effects 0.000 claims description 3
- 238000005728 strengthening Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 20
- 239000003507 refrigerant Substances 0.000 abstract description 10
- 239000003921 oil Substances 0.000 description 32
- 230000001276 controlling effect Effects 0.000 description 16
- 238000001704 evaporation Methods 0.000 description 11
- 230000008020 evaporation Effects 0.000 description 11
- 230000001105 regulatory effect Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 238000010257 thawing Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000010721 machine oil Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 206010020852 Hypertonia Diseases 0.000 description 1
- 206010068052 Mosaicism Diseases 0.000 description 1
- 230000036772 blood pressure Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000003765 sex chromosome Anatomy 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Air Conditioning Control Device (AREA)
Abstract
The utility model provides a multi -split air conditioning system, including compressor, oil separator, two air -cooled heat exchangers, two room external fan, indoor set, first solenoid valve, second solenoid valve, third solenoid valve, fourth solenoid valve and cross valves. The utility model discloses replacing an original air -cooled heat exchanger with two air -cooled heat exchangers, cutting off an air -cooled heat exchanger during cryogenic refrigeration or make the condenser with one of them air -cooled heat exchanger, another makes the evaporimeter, reach to reduce air -cooled condenser area, and increase air cooling evaporator area, the lowering system returns the risk of liquid refrigerants, regard an air -cooled heat exchanger as the evaporimeter when high temperature heats, another realizes maintaining reasonable within range with system pressure and gas returning temperature control as the condenser, at low temperature heating, in the time of need changing the frost after off -premises station forced air cooling heat exchanger frosts, with an air -cooled heat exchanger as the condenser frost, another continues to provide as the evaporimeter and heats, it can continuously provide the demand that heats to have satisfied the unit.
Description
Technical field
This utility model relates to air-conditioning technical field, more particularly, it relates to a kind of multi-online air-conditioning system.
Background technology
In existing multi-online air-conditioning system, the air cooling heat exchanger of off-premises station all by same control valve with
Compressor connects, so, and the air cooling heat exchanger of off-premises station or all making vaporizer uses, or
All make condenser to use.
In this multi-online air-conditioning system work process, when cryogenic refrigeration, the air cooling heat exchanger of off-premises station is complete
Portion is used as condenser, and condensation effect so may be made very good, and vaporizer can not evaporate completely, thus leads
Cause system returns liquid refrigerants, causes compressor to burn time serious；
When high temperature heats, compressor exhaust temperature is high, and at this moment system pressure also can be the highest, and off-premises station
Air cooling heat exchanger be completely used as vaporizer, evaporation effect is very good, causes suction temperature the highest, return air temperature
Causing again delivery temperature high if degree height, such vicious cycle is gone down；
At low-temperature heating, the air cooling heat exchanger of off-premises station use as vaporizer after frosting time, need outdoor
The air cooling heat exchanger of machine is completely used as condenser, and indoor set heat exchanger is used as vaporizer, utilizes High Temperature High Pressure
Coolant when off-premises station air cooling heat exchanger condenses, frost is melted, but, condensed coolant need exist
Evaporation endothermic inside indoor set heat exchanger, so, if the meeting of indoor set blowing blowout is cold wind,
Even if not drying, indoor set can not persistently heat, and causing multi-online air-conditioning system not meet persistently provides
Heating needs, have impact on the comfortableness requirement of user.
In sum, a kind of multi-online air-conditioning system how is provided, to improve multi-online air-conditioning system low
Reliability and low-temperature heating when temperature refrigeration, high temperature heat need the indoor comfort during defrosting, are
The technical problem that those skilled in the art are urgently to be resolved hurrily at present.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of multi-online air-conditioning system, many to solve
Problem that the online air-conditioning system reliability when cryogenic refrigeration, high temperature heat is low and low-temperature heating needs
Indoor comfortable sex chromosome mosaicism during defrosting.
In order to achieve the above object, the following technical scheme of this utility model offer:
A kind of multi-online air-conditioning system, including:
Compressor；
Oil eliminator, the entrance point A1 of described oil eliminator connects the air vent of described compressor, described oil
The oily outfan C1 of separator connects the gas returning port of described compressor by capillary tube；
First air cooling heat exchanger, described first air cooling heat exchanger is connected with the high-pressure stop valve of off-premises station；
First outdoor fan, described first outdoor fan is for described first air cooling heat exchanger enhanced heat exchange；
Second air cooling heat exchanger, described second air cooling heat exchanger is separate with described first air cooling heat exchanger
And be connected with described high-pressure stop valve；
Second outdoor fan, described second outdoor fan is separate with described first outdoor fan, described
Second outdoor fan is for described second air cooling heat exchanger enhanced heat exchange；
Indoor set, the input of described indoor set is by the liquid side branch pipe of multi-connected machine and described high-pressure stop
Valve connects, and the outfan of described indoor set is ended by the low pressure of the gas side branch pipe of multi-connected machine with off-premises station
Valve connects；
First electromagnetic valve, the input of described first electromagnetic valve connects the coolant outfan of described oil eliminator
B1, the outfan of described first electromagnetic valve connects described first air cooling heat exchanger, and described first electromagnetic valve is used
Use as condenser in controlling described first air cooling heat exchanger；
Second electromagnetic valve, the input of described second electromagnetic valve connects the coolant outfan of described oil eliminator
B1, the outfan of described second electromagnetic valve connects described second air cooling heat exchanger, and described second electromagnetic valve is used
Use as condenser in controlling described second air cooling heat exchanger；
3rd electromagnetic valve, the input of described 3rd electromagnetic valve connects described first air cooling heat exchanger and described
The common end of the first electromagnetic valve outfan, the outfan of described 3rd electromagnetic valve connects returning of described compressor
QI KOU, described 3rd electromagnetic valve is used for controlling described first air cooling heat exchanger and uses as vaporizer；
4th electromagnetic valve, the input of described 4th electromagnetic valve connects described second air cooling heat exchanger and described
The common end of the second electromagnetic valve outfan, the outfan of described 4th electromagnetic valve connects returning of described compressor
QI KOU, described 4th electromagnetic valve is used for controlling described second air cooling heat exchanger and uses as vaporizer；
Cross valve, the first end D of described cross valve connects the coolant outfan B1 of described oil eliminator, institute
The the second end C stating cross valve connects described low-pressure shutoff valve, the 3rd end E of described cross valve and the 4th end
The common port of S connects the public of the outfan of described 3rd electromagnetic valve and the outfan of described 4th electromagnetic valve
End and the gas returning port of described compressor, described cross valve is used for controlling described indoor set for refrigeration or system
Heat.
Preferably, in above-mentioned multi-online air-conditioning system, described first air cooling heat exchanger is swollen by the first electronics
Swollen valve is connected with described high-pressure stop valve, and described first electric expansion valve flows through described first wind for control
The cold medium flux of cold heat exchanger.
Preferably, in above-mentioned multi-online air-conditioning system, described second air cooling heat exchanger is swollen by the second electronics
Swollen valve is connected with described high-pressure stop valve, and described second electric expansion valve flows through described second wind for control
The cold medium flux of cold heat exchanger.
Preferably, in above-mentioned multi-online air-conditioning system, the outfan of described 3rd electromagnetic valve, the described 4th
The common port of the outfan of electromagnetic valve and the 3rd end E of described cross valve and the 4th end S passes through gas-liquid separation
Device connects the gas returning port of described compressor, and the import of described gas-liquid separator connects described 3rd electromagnetic valve
Outfan, the described outfan of the 4th electromagnetic valve and the 3rd end E's of described cross valve and the 4th end S
Common port, the outlet of described gas-liquid separator connects the gas returning port of described compressor.
Preferably, in above-mentioned multi-online air-conditioning system, the outlet of described gas-liquid separator and described compressor
Low pressure switch and low-pressure sensor it is additionally provided with on the link circuit of gas returning port.
Preferably, in above-mentioned multi-online air-conditioning system, the air vent of described compressor and described oil eliminator
Between or described oil eliminator and described first electromagnetic valve, described second electromagnetic valve, described cross valve
High-pressure switch and high-pressure pressure sensor it is additionally provided with between common port.
Preferably, in above-mentioned multi-online air-conditioning system, described compressor includes the multiple compressions being arranged in parallel
Machine, described indoor set is multiple stage.
Preferably, in above-mentioned multi-online air-conditioning system, described compressor is two, the respectively first compression
Machine and the second compressor, the oily outfan C1 of described oil eliminator connects described first by the first capillary tube
The gas returning port of compressor, the oily outfan C1 of described oil eliminator connects described second by the second capillary tube
The gas returning port of compressor；
Described indoor set is two, the respectively first indoor set and the second indoor set.
Preferably, in above-mentioned multi-online air-conditioning system, described first compressor is frequency-changeable compressor, constant speed
Compressor or digital compressor；Described second compressor is frequency-changeable compressor, constant speed compressor or digital pressure
Contracting machine.
Preferably, in above-mentioned multi-online air-conditioning system, described first air cooling heat exchanger and described second air-cooled
The model of heat exchanger is identical；Described first outdoor fan is identical with the model of described second outdoor fan；Institute
State the first electromagnetic valve, described second electromagnetic valve, described 3rd electromagnetic valve and the model of described 4th electromagnetic valve
The most identical.
From above-mentioned technical scheme it can be seen that the multi-online air-conditioning system that this utility model provides includes pressure
Contracting machine, oil eliminator, the first air cooling heat exchanger, the first outdoor fan, the second air cooling heat exchanger, second
Outdoor fan, indoor set, the first electromagnetic valve, the second electromagnetic valve, the 3rd electromagnetic valve, the 4th electromagnetic valve and
Cross valve；Wherein, the entrance point A1 of oil eliminator connects the air vent of compressor, and the oil of oil eliminator is defeated
Go out to hold C1 to pass through capillary tube and connect the gas returning port of compressor；First air cooling heat exchanger cuts with the high pressure of off-premises station
Only valve connects；First outdoor fan is for the first air cooling heat exchanger enhanced heat exchange；Second air cooling heat exchanger
Separate with the first air cooling heat exchanger and be connected with high-pressure stop valve；Second outdoor fan and the first outdoor
Blower fan is separate, and the second outdoor fan is for the second air cooling heat exchanger enhanced heat exchange；Indoor set defeated
Entering end to be connected with high-pressure stop valve by the liquid side branch pipe of multi-connected machine, the outfan of indoor set is by multi-joint
The gas side branch pipe of machine is connected with the low-pressure shutoff valve of off-premises station；The input of the first electromagnetic valve connects oil point
From the coolant outfan B1 of device, the outfan of the first electromagnetic valve connects the first air cooling heat exchanger, the first electromagnetism
Valve uses as condenser for controlling the first air cooling heat exchanger；The input of the second electromagnetic valve connects oil point
From the coolant outfan B1 of device, the outfan of the second electromagnetic valve connects the second air cooling heat exchanger, the second electromagnetism
Valve uses as condenser for controlling the second air cooling heat exchanger；The input of the 3rd electromagnetic valve connects first
Air cooling heat exchanger and the common end of the first electromagnetic valve outfan, the outfan of the 3rd electromagnetic valve connects compressor
Gas returning port, the 3rd electromagnetic valve for control the first air cooling heat exchanger use as vaporizer；4th electromagnetism
The input of valve connects the common end of the second air cooling heat exchanger and the second electromagnetic valve outfan, the 4th electromagnetic valve
Outfan connect compressor gas returning port, the 4th electromagnetic valve for control the second air cooling heat exchanger as steaming
Send out device to use；First end D of cross valve connects the coolant outfan B1 of oil eliminator, the second of cross valve
End C connects low-pressure shutoff valve, and the common port of the 3rd end E and the 4th end S of cross valve connects the 3rd electromagnetism
The outfan of valve and the common port of the outfan of the 4th electromagnetic valve and the gas returning port of compressor, cross valve is used
Still heat for refrigeration in controlling indoor set.
This utility model is by by two air cooling heat exchangers (the first air cooling heat exchanger and the second air cooling heat exchanger)
Replace an original air cooling heat exchanger so that multi-online air-conditioning system is when cryogenic refrigeration, by cutting off one
Individual air cooling heat exchanger, reaches to reduce the purpose of air-cooled condenser area, or by one of them air-cooled heat exchange
Condenser made by device, and another one air cooling heat exchanger makees vaporizer, reaches to reduce air-cooled condenser area, increases
The purpose of big air-cooled evaporator area, thus reduce system and return the risk of liquid refrigerants；Work as multi-gang air-conditioner
System when high temperature heats, by using an air cooling heat exchanger as vaporizer, another heat exchanger conduct
Condenser, it is achieved control to maintain in the reasonable scope by system pressure and suction temperature；When multi-connected machine is empty
Adjusting system, when low-temperature heating, in the case of needing defrost, passes through after off-premises station air cooling heat exchanger frosting
One air cooling heat exchanger is made condenser defrost, and another air cooling heat exchanger is made vaporizer continuation offer and is heated,
Meet unit and the demand heated can be persistently provided, thus ensure that the comfortableness of user.Therefore, originally
The multi-online air-conditioning system that utility model provides is effectively increased multi-online air-conditioning system at cryogenic refrigeration, height
Reliability and low-temperature heating when temperature heats need the indoor comfort during defrosting.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will
The accompanying drawing used required in embodiment or description of the prior art is briefly described, it should be apparent that,
Accompanying drawing in describing below is embodiments more of the present utility model, comes for those of ordinary skill in the art
Say, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the multi-online air-conditioning system that this utility model embodiment provides.
Detailed description of the invention
This utility model embodiment provides a kind of multi-online air-conditioning system, improves multi-online air-conditioning system
Reliability and low-temperature heating when cryogenic refrigeration, high temperature heat need the indoor comfort during defrosting.
For making the purpose of this utility model embodiment, technical scheme and advantage clearer, below in conjunction with
Accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out clear,
It is fully described by, it is clear that described embodiment is a part of embodiment of this utility model rather than complete
The embodiment in portion.Based on the embodiment in this utility model, those of ordinary skill in the art are not making
The every other embodiment obtained under creative work premise, broadly falls into the scope of this utility model protection.
Refer to accompanying drawing 1, the multi-online air-conditioning system that this utility model embodiment provides includes compressor, oil point
Outdoor from device the 3, first air cooling heat exchanger the 8, first outdoor fan the 9, second air cooling heat exchanger 10, second
Blower fan 11, indoor set, first electromagnetic valve the 4, second electromagnetic valve the 5, the 3rd electromagnetic valve the 6, the 4th electromagnetic valve
7 and cross valve 12；Wherein, the entrance point A1 of oil eliminator 3 connects the air vent of compressor, separating of oil
The oily outfan C1 of device 3 connects the gas returning port of compressor by capillary tube；First air cooling heat exchanger 8 and room
The high-pressure stop valve 15 of outer machine connects；First outdoor fan 9 is for changing to the first air cooling heat exchanger Final 8
Heat；Second air cooling heat exchanger 10 and the first air cooling heat exchanger 8 is separate and with high-pressure stop valve 15 even
Connect；Second outdoor fan 11 is separate with the first outdoor fan 9, the second outdoor fan 11 be used for
Second air cooling heat exchanger 10 enhanced heat exchange；The input of the indoor set liquid side branch pipe 25 by multi-connected machine
Being connected with high-pressure stop valve 15, the outfan of indoor set is by the gas side branch pipe 26 of multi-connected machine and outdoor
The low-pressure shutoff valve 14 of machine connects；The input of the first electromagnetic valve 4 connects the coolant output of oil eliminator 3
End B1, the outfan of the first electromagnetic valve 4 connects the first air cooling heat exchanger 8, and the first electromagnetic valve 4 is used for controlling
Make the first air cooling heat exchanger 8 to use as condenser；The input of the second electromagnetic valve 5 connects oil eliminator 3
Coolant outfan B1, the outfan of the second electromagnetic valve 5 connects the second air cooling heat exchanger 10, the second electromagnetism
Valve 5 uses as condenser for controlling the second air cooling heat exchanger 10；The input of the 3rd electromagnetic valve 6 is even
Connect the common end of the first air cooling heat exchanger 8 and the first electromagnetic valve 4 outfan, the output of the 3rd electromagnetic valve 6
End connects the gas returning port of compressor, and the 3rd electromagnetic valve 6 is for controlling the first air cooling heat exchanger 8 as evaporation
Device uses；The input of the 4th electromagnetic valve 7 connects the second air cooling heat exchanger 10 and the second electromagnetic valve 5 exports
The common end of end, the outfan of the 4th electromagnetic valve 7 connects the gas returning port of compressor, and the 4th electromagnetic valve 7 is used
Use as vaporizer in controlling the second air cooling heat exchanger 10；First end D of cross valve 12 connects oil point
Low-pressure shutoff valve 14, cross valve is connected from the coolant outfan B1 of device 3, the second end C of cross valve 12
The common port of the 3rd end E and the 4th end S of 12 connects outfan and the 4th electromagnetic valve of the 3rd electromagnetic valve 6
The common port of the outfan of 7 and the gas returning port of compressor, cross valve 12 is used for controlling indoor set for refrigeration
Still heat.
It should be noted that cross valve 12 is power down when, the first end D and the second end C conducting, the
Three end E and the 4th end S conducting；Cross valve 12 is powering on when, and the first end D and the 3rd end E leads
Logical, the second end C and the 4th end S conducting.
Preferably, in the present embodiment, the heat exchanger of indoor set can be air cooling heat exchanger, it is also possible to be water
Cold heat exchanger.
This utility model is by by (the first air cooling heat exchanger 8 and the second air-cooled heat exchange of two air cooling heat exchangers
Device 10) replace an original air cooling heat exchanger so that and multi-online air-conditioning system, when cryogenic refrigeration, passes through
Cut off an air cooling heat exchanger, reach to reduce the purpose of air-cooled condenser area, or by one of them wind
Cold heat exchanger makees condenser, and another one air cooling heat exchanger makees vaporizer, reaches to reduce air-cooled condenser face
Long-pending, increase the purpose of wind-cooled evaporator area, thus reduce system and return the risk of liquid refrigerants；When multi-joint
Air conditioner system when high temperature heats, by using an air cooling heat exchanger as vaporizer, another heat exchange
Device is as condenser, it is achieved control to maintain in the reasonable scope by system pressure and suction temperature；When many
Online air-conditioning system is when low-temperature heating, in the case of needing defrost after off-premises station air cooling heat exchanger frosting,
By an air cooling heat exchanger is made condenser defrost, another air cooling heat exchanger is made vaporizer and is continued to provide
Heat, meet unit and the demand heated can be persistently provided, thus ensure that the comfortableness of user.Cause
This, the multi-online air-conditioning system that this utility model provides is effectively increased multi-online air-conditioning system in low temperature system
Reliability and low-temperature heating when cold, high temperature heats need the indoor comfort during defrosting.
Additionally, this utility model utilizes the oil eliminator 3 can be cold to the gaseous state of air vent flowing out compressor
Matchmaker and compressor and freeze machine oil separate, the high-pressure gaseous coolant coolant outfan by oil eliminator 3
B1 discharges, and isolated compressor and freeze machine oil is discharged by the oily outfan C1 of oil eliminator 3, warp
Crossing capillary tube and return to the gas returning port of compressor, above-mentioned capillary tube is for controlling the oil drain quantity of oil eliminator 3.
For ensureing that the first air cooling heat exchanger 8 has good refrigeration as condenser when using, or
Good heating effect is had as vaporizer when using, in the multi-online air-conditioning system that above-described embodiment provides,
First air cooling heat exchanger 8 is connected with high-pressure stop valve 15 by the first electric expansion valve 23, utilize this
One electric expansion valve 23 can accurately control to flow through the cold medium flux of the first air cooling heat exchanger 8.
In like manner, the second air cooling heat exchanger 10 is connected with high-pressure stop valve 15 by the second electric expansion valve 24,
Second electric expansion valve 24 is for controlling to flow through the cold medium flux of the second air cooling heat exchanger 10, thus ensures
Second air cooling heat exchanger 10 has good refrigeration as condenser when using, or as vaporizer
Good heating effect is had during use.
In order to optimize technique scheme further, the outfan of the 3rd electromagnetic valve 6, the 4th electromagnetic valve 7
Outfan and cross valve 12 the 3rd end E and the 4th end S common port by gas-liquid separator 16 even
Connect the gas returning port of compressor, the import of gas-liquid separator 16 connect the outfan of the 3rd electromagnetic valve 6, the 4th
The outfan of electromagnetic valve 7 and the 3rd end E of cross valve 12 and the common port of the 4th end S, gas-liquid separation
The outlet of device 16 connects the gas returning port of compressor.This gas-liquid separator 16 is for flowing into compressor return air
The gaseous coolant of mouth carries out gas-liquid separation.
Due to the hypertonia in multi-online air-conditioning system or too low all can affect multi-online air-conditioning system
Stable operation.Therefore, this utility model is to ensure the operation that multi-online air-conditioning system is reliable and stable, upper
State in embodiment, gas-liquid separator 16 outlet with the link circuit of the gas returning port of compressor on be additionally provided with low
Pressure pressure switch 18.When gas-liquid separator 16 exports the gas pressure between compressor return air mouth less than pre-
If during value, low pressure switch 18 disconnects automatically, and sends a pressure signal to electric-control system, thus
Electric-control system takes corresponding protective measure according to the pressure signal received, and such as, turns off compressor.
Further, it is provided with on the link circuit of the gas returning port of compressor in gas-liquid separator 16 outlet
Low-pressure sensor 17.Multi-connected machine is automatically controlled by what detection low-pressure sensor 17 in real time fed back is
System low pressure, makes corresponding control or protection, such as detects after participating in the logic control computing of system
To low pressure, adjusted the first electric expansion valve 23 and the second electric expansion valve 24 in real time by logical operations
Aperture size.
Preferably, between air vent and the oil eliminator 3 of compressor or oil eliminator 3 and the first electromagnetism
Valve the 4, second electromagnetic valve 5, cross valve 12 common port between be additionally provided with high-pressure switch 21.When
When the pressure of compressor expellant gas looked into preset value, high-pressure switch 21 disconnects automatically, and to electricity
Ore-controlling Role sends a pressure signal, thus electric-control system is taked according to the pressure signal received accordingly
Protective measure, such as, turns off compressor.
It addition, first electromagnetic valve the 4, second electromagnetic valve 5, the common port of cross valve 12 are provided with high pressure pressure
Force transducer 22, multi-connected machine is automatically controlled by detecting the system high pressure that high-pressure pressure sensor 22 is fed back in real time
Pressure, makes corresponding control or protection, high pressure such as detected after participating in the logic control computing of system
Pressure, adjusts opening of the first electric expansion valve 23 and the second electric expansion valve 24 in real time by logical operations
Degree size.
Preferably, above-mentioned compressor includes the multiple compressors being arranged in parallel, and work efficiency is preferable；Indoor
Machine is multiple stage, it is possible to be the heat exchange of multiple rooms simultaneously.Certainly, above-mentioned compressor and indoor set can also one
Individual.
In order to simplify the structure of multi-online air-conditioning system, compressor is two, the respectively first compressor 1
With the second compressor 2, the oily outfan C1 of oil eliminator 3 connects the first pressure by the first capillary tube 20
The gas returning port of contracting machine 1, the oily outfan C1 of oil eliminator 3 connects the second pressure by the second capillary tube 19
The gas returning port of contracting machine 2.
Further, indoor set is two, the respectively first indoor set 27 and the second indoor set 13.Such as figure
Shown in 1, the input A2 of the first indoor set 27 and input A3 of the second indoor set 13 all passes through
Liquid side branch pipe 25 is connected with high-pressure stop valve 15, the outfan B2 and second of the first indoor set 27
The outfan B3 of indoor set 13 is all connected with low-pressure shutoff valve 14 by the gas side branch pipe 26 of multi-connected machine.
The multi-online air-conditioning system that this utility model embodiment provides is concrete in refrigeration and the loop control heated
As follows:
When normal refrigeration (i.e. high-temperature refrigeration), the first electromagnetic valve 4 is opened, and the second electromagnetic valve 5 is opened,
3rd electromagnetic valve 6 cuts out, and the 4th electromagnetic valve 7 cuts out, the first electric expansion valve 23 and the second electronic expansion
Valve 24 is opened under the control of electric-control system, and cross valve 12 powers on.The High Temperature High Pressure that compressor is discharged
Coolant a part after the first electromagnetic valve 4 to first air cooling heat exchanger 8 condensation after through the first electric expansion valve
23 reducing pressure by regulating flows, a part after the second electromagnetic valve 5 to second air cooling heat exchanger 10 condensation after through second
Electric expansion valve 24 reducing pressure by regulating flow, the liquid refrigerants after two air cooling heat exchanger reducing pressure by regulating flows is to high-pressure stop
Go to steam to first indoor set the 27, second indoor set 13 respectively after valve 15 after liquid side branch pipe 25 shunts
Send out heat absorption, become gaseous coolant after evaporation endothermic after gas side branch pipe 26 collaborates through cross valve 12
Return to gas-liquid separator 16, be eventually returned to compressor and complete kind of refrigeration cycle, reach multi-online air-conditioning system system
Cold purpose.
It should be noted that owing to cross valve 12 powers on, the first end D of cross valve 12 and the 3rd end E
Conducting, the High Temperature High Pressure coolant that compressor is discharged is fallen by capillary pipe plug in cross valve 12, flows only through a small amount of
Coolant return to gas-liquid separator 16 through capillary tube.
When normally heating (i.e. low-temperature heating), cross valve 12 power down, the first electric expansion valve 23,
Two electric expansion valves 24 are opened under the control of electric-control system, and the first electromagnetic valve 4 cuts out power down, the second electricity
Magnet valve 5 is closed, and the 3rd electromagnetic valve 6 is opened, and the 4th electromagnetic valve 7 is opened.The high temperature that compressor is discharged is high
The coolant of pressure is arrived after being shunted by gas side branch pipe 26 after cross valve 12 to low-pressure shutoff valve 14 respectively
First indoor set the 27, second indoor set 13 condenses, and condensed liquid refrigerants is through liquid side branch pipe 25
Interflow, a part is inhaled to the first air cooling heat exchanger 8 evaporation after the first electric expansion valve 23 reducing pressure by regulating flow
Returning to gas-liquid separator 16 through the 3rd electromagnetic valve 6 after heat, a part saves through the second electric expansion valve 24
After the second air cooling heat exchanger 10 evaporation endothermic, gas-liquid separator is returned to through the 4th electromagnetic valve 7 after stream blood pressure lowering
16, it is eventually returned to compressor and completes to heat circulation, reach the purpose that multi-online air-conditioning system heats.
Multi-online air-conditioning system disclosed in this utility model improves multi-online air-conditioning system at cryogenic refrigeration, height
The detailed process of comfortableness during reliability that temperature heats and low-temperature heating need defrosting is as follows:
In cryogenic refrigeration, when the most air-cooled side ambient temperature is low, two air cooling heat exchangers are without all condensing
Device, at this point it is possible to cut out an air cooling heat exchanger, such as cuts out the second air cooling heat exchanger 10, makes multi-joint
First electromagnetic valve 4 of air conditioner system is opened, and the second electromagnetic valve 5 cuts out, and the 3rd electromagnetic valve 6 cuts out,
4th electromagnetic valve 7 is opened, and the first electric expansion valve 23 is opened under the control of electric-control system, the second electronics
Expansion valve 24 cuts out, and cross valve 12 powers on.The coolant of the High Temperature High Pressure that compressor is discharged is all to first
Through the first electric expansion valve 23 reducing pressure by regulating flow after air cooling heat exchanger 8 condensation, coolant is through the first air-cooled heat exchange
Liquid refrigerants after device 8 reducing pressure by regulating flow, after high-pressure stop valve 15, is shunted by liquid side branch pipe 25
Rear respectively to first indoor set the 27, second indoor set 13 devaporation heat absorption；Gaseous state is become cold after evaporation endothermic
Matchmaker returns to gas-liquid through cross valve 12 again by after low-pressure shutoff valve 14 after gas side branch pipe 26 collaborates
Separator 16, is eventually returned to compressor and completes kind of refrigeration cycle, reaches the purpose of multi-online air-conditioning system refrigeration.
Also ensure that the system reliability freezed at low ambient temperatures simultaneously.
Wherein, owing to the second electric expansion valve 24 is closed, and the second electromagnetic valve 5 cuts out, the 4th electromagnetic valve
7 open, and the coolant in the second air cooling heat exchanger 10 returns to gas-liquid separator 16 after the 4th electromagnetic valve 7,
Do not circulate in being namely equivalent to the second air cooling heat exchanger 10 coolant.
In cryogenic refrigeration, air-cooled side ambient temperature is low, when indoor ambient temperature is the lowest, air-cooled by one
Condenser made by heat exchanger, and another one air cooling heat exchanger makees vaporizer, and the such as first air cooling heat exchanger 8 is made
Condenser, the second air cooling heat exchanger 10 is made vaporizer, is controlled as follows: make the first electromagnetic valve 4 open, the
Two electromagnetic valves 5 cut out, and the 3rd electromagnetic valve 6 cuts out, and the 4th electromagnetic valve 7 is opened, the first electric expansion valve
23 open under the control of electric-control system, and the second electric expansion valve 24 is opened under the control of electric-control system,
Cross valve 12 powers on.The coolant of the High Temperature High Pressure that compressor is discharged all condenses to the first air cooling heat exchanger 8
By the first electric expansion valve 23 reducing pressure by regulating flow, coolant is after the first air cooling heat exchanger 8 reducing pressure by regulating flow
A liquid refrigerants part is evaporated to the second air cooling heat exchanger 10 through the second electric expansion valve 24 reducing pressure by regulating flow
Returning to gas-liquid separator 16 by after the 4th electromagnetic valve 7 after heat absorption, another part coolant is cut by high pressure
Respectively to first indoor set the 27, second indoor set 13 after only being shunted by liquid side branch pipe 25 again after valve 15
Devaporation is absorbed heat, and becomes gaseous coolant and cut by low pressure after gas side branch pipe 26 collaborates after evaporation endothermic
Only return to gas-liquid separator 16 through cross valve 12 again after valve 14, be eventually returned to compressor and complete refrigeration and follow
Ring, reaches the purpose of multi-online air-conditioning system refrigeration.Also ensure that simultaneously and to freeze at low ambient temperatures
System reliability.
When high temperature heats, condenser made by the heat exchanger of first indoor set the 27, second indoor set 13, air-cooled
Vaporizer made by heat exchanger, and air-cooled side ambient temperature is high, and evaporation effect is good, and compressor exhaust temperature is high,
Pressure at expulsion is high, so can increase condenser area, reduces evaporator area.Such as air-cooled by first
Heat exchanger 8 as vaporizer, the second air cooling heat exchanger 10 as condenser, the first indoor set 27, second
Condenser made by the heat exchanger of indoor set 13.Control process is as follows: cross valve 12 power down, the first electronics is swollen
Swollen valve the 23, second electric expansion valve 24 is opened under the control of electric-control system, and the first electromagnetic valve 4 cuts out,
Second electromagnetic valve 5 is opened, and the 3rd electromagnetic valve 6 is opened, and the 4th electromagnetic valve 7 cuts out, and compressor is discharged
A High Temperature High Pressure coolant part arrives low-pressure shutoff valve 14 again through gas side branch pipe 26 after cross valve 12
Respectively to condensation in first indoor set the 27, second indoor set 13 after shunting, condensed coolant is through liquid side
Branch pipe 25 arrives high-pressure stop valve 15 and the first electric expansion valve 23 and the second electric expansion valve behind interflow
Between 24, compressor discharge High Temperature High Pressure coolant another part after the second electromagnetic valve 5 to second
After the second electric expansion valve 24, high-pressure stop valve 15 and the first electricity is reached after air cooling heat exchanger 10 condensation
Between sub-expansion valve 23 and the second electric expansion valve 24, the condensed coolant of two-way eventually passes the first electricity
To the first air cooling heat exchanger 8 evaporation endothermic after sub-expansion valve 23, it is then passed through the 3rd electromagnetic valve 6 and finally returns
After gas-liquid separator 16, return to compressor complete whole refrigerant circulation.
When low-temperature heating, basic controlling process sees above-mentioned multi-online air-conditioning system when normally heating, but
It is owing to air-cooled side ambient temperature is low, air cooling heat exchanger meeting frosting, when air cooling heat exchanger needs defrost,
Can defrost as condenser by an air cooling heat exchanger, another air cooling heat exchanger as vaporizer, from
And ensure that systems stay heats.Wherein, the process of air cooling heat exchanger defrost is shown in multi-online air-conditioning system high temperature
Air cooling heat exchanger when heating makees condenser, and an air cooling heat exchanger does the process of vaporizer, it is possible to
During to be multi-online air-conditioning system cryogenic refrigeration, one air cooling heat exchanger makees condenser, an air cooling heat exchanger
Doing the process of vaporizer, here is omitted.
In summary it can be seen, this utility model is by by two air cooling heat exchangers (the first air cooling heat exchanger 8
With the second air cooling heat exchanger 10) replace an original air cooling heat exchanger so that and multi-online air-conditioning system is low
During temperature refrigeration, by cutting off an air cooling heat exchanger, reach to reduce the purpose of air-cooled condenser area, or
One of them air cooling heat exchanger is made condenser by person, and another one air cooling heat exchanger is made vaporizer, reached to subtract
Few air-cooled condenser area, increases the purpose of wind-cooled evaporator area, thus reduces system and return liquid refrigerants
Risk；When multi-online air-conditioning system heats at high temperature, by using an air cooling heat exchanger as evaporation
Device, another heat exchanger is as condenser, it is achieved control to maintain conjunction by system pressure and suction temperature
In the range of reason；When multi-online air-conditioning system is at low-temperature heating, need after off-premises station air cooling heat exchanger frosting
In the case of wanting defrost, by an air cooling heat exchanger is made condenser defrost, another air cooling heat exchanger
Make vaporizer continuation offer to heat, meet unit and the demand heated can be persistently provided, thus ensure that
The comfortableness of user.Therefore, the multi-online air-conditioning system that this utility model provides is effectively increased multi-connected machine
The air conditioning system reliability when cryogenic refrigeration, high temperature heat and the indoor during low-temperature heating needs defrosting
Comfortableness.
In multi-online air-conditioning system, the first compressor 1 is frequency-changeable compressor, constant speed compressor or digital pressure
Contracting machine；Second compressor 2 is frequency-changeable compressor, constant speed compressor or digital compressor.It is to say,
Above-mentioned compressor be combined as two frequency-changeable compressors, frequency-changeable compressor+constant speed compressor, two digital pressures
Contracting machine or digital compressor+constant speed compressor.Certainly, when above-mentioned compressor is one, can be one
Frequency-changeable compressor, a constant speed compressor or a digital compressor.
For the ease of installing, in the multi-online air-conditioning system that above-described embodiment provides, the first air cooling heat exchanger 8
Identical with the model of the second air cooling heat exchanger 10；First outdoor fan 9 and the type of the second outdoor fan 11
Number identical；First electromagnetic valve the 4, second electromagnetic valve the 5, the 3rd electromagnetic valve 6 and the model of the 4th electromagnetic valve 7
The most identical.It should be noted that above-mentioned first air cooling heat exchanger 8 and the model of the second air cooling heat exchanger 10,
Can also be different.The model of the first outdoor fan 9 and the second outdoor fan 11 also can be different, do not do
Limit.In like manner, aforementioned four electromagnetic valve differs the most entirely, or incomplete same, does not limits.
In this specification, each embodiment uses the mode gone forward one by one to describe, and each embodiment stresses
Being the difference with other embodiments, between each embodiment, identical similar portion sees mutually.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses
This utility model.Multiple amendment to these embodiments will be aobvious for those skilled in the art
And be clear to, generic principles defined herein can be without departing from spirit or scope of the present utility model
In the case of, realize in other embodiments.Therefore, this utility model is not intended to be limited to institute herein
These embodiments shown, and it is to fit to consistent with principles disclosed herein and features of novelty the widest
Scope.
Claims (10)
1. a multi-online air-conditioning system, it is characterised in that including:
Compressor；
Oil eliminator (3), the entrance point A1 of described oil eliminator (3) connects the aerofluxus of described compressor
Mouthful, the oily outfan C1 of described oil eliminator (3) connects the gas returning port of described compressor by capillary tube；
The high-pressure stop of the first air cooling heat exchanger (8), described first air cooling heat exchanger (8) and off-premises station
Valve (15) connects；
First outdoor fan (9), described first outdoor fan (9) is for described first air-cooled heat exchange
Device (8) enhanced heat exchange；
Second air cooling heat exchanger (10), described second air cooling heat exchanger (10) air-cooled is changed with described first
Hot device (8) is separate and is connected with described high-pressure stop valve (15)；
Second outdoor fan (11), described second outdoor fan (11) and described first outdoor fan (9)
Separate, described second outdoor fan (11) is for strengthening to described second air cooling heat exchanger (10)
Heat exchange；
Indoor set, the input of described indoor set is by liquid side branch pipe (25) of multi-connected machine and described height
Pressure cutoff valve (15) connects, the outfan of described indoor set gas side branch pipe (26) by multi-connected machine
It is connected with the low-pressure shutoff valve (14) of off-premises station；
First electromagnetic valve (4), the input of described first electromagnetic valve (4) connects described oil eliminator (3)
Coolant outfan B1, the outfan of described first electromagnetic valve (4) connects described first air cooling heat exchanger
(8), described first electromagnetic valve (4) is used for controlling described first air cooling heat exchanger (8) as condenser
Use；
Second electromagnetic valve (5), the input of described second electromagnetic valve (5) connects described oil eliminator (3)
Coolant outfan B1, the outfan of described second electromagnetic valve (5) connects described second air cooling heat exchanger
(10), described second electromagnetic valve (5) is used for controlling described second air cooling heat exchanger (10) as condensation
Device uses；
3rd electromagnetic valve (6), the input of described 3rd electromagnetic valve (6) connects described first and air-cooled changes
Hot device (8) and the common end of described first electromagnetic valve (4) outfan, described 3rd electromagnetic valve (6)
Outfan connects the gas returning port of described compressor, and described 3rd electromagnetic valve (6) is used for controlling described first wind
Cold heat exchanger (8) uses as vaporizer；
4th electromagnetic valve (7), the input of described 4th electromagnetic valve (7) connects described second and air-cooled changes
Hot device (10) and the common end of described second electromagnetic valve (5) outfan, described 4th electromagnetic valve (7)
Outfan connect described compressor gas returning port, described 4th electromagnetic valve (7) is used for controlling described second
Air cooling heat exchanger (10) uses as vaporizer；
Cross valve (12), the first end D of described cross valve (12) connects described oil eliminator (3)
Coolant outfan B1, the second end C of described cross valve (12) connect described low-pressure shutoff valve (14),
The common port of the 3rd end E and the 4th end S of described cross valve (12) connects described 3rd electromagnetic valve (6)
Outfan and the common port of outfan of described 4th electromagnetic valve (7) and the gas returning port of described compressor,
Described cross valve (12) is used for controlling described indoor set and still heats for refrigeration.
2. multi-online air-conditioning system as claimed in claim 1, it is characterised in that described first air-cooled changes
Hot device (8) is connected with described high-pressure stop valve (15) by the first electric expansion valve (23), and described the
One electric expansion valve (23) flows through the cold medium flux of described first air cooling heat exchanger (8) for control.
3. multi-online air-conditioning system as claimed in claim 1, it is characterised in that described second air-cooled changes
Hot device (10) is connected with described high-pressure stop valve (15) by the second electric expansion valve (24), described
Second electric expansion valve (24) flows through the cold medium flux of described second air cooling heat exchanger (10) for control.
4. multi-online air-conditioning system as claimed in claim 1, it is characterised in that described 3rd electromagnetic valve
(6) outfan, the outfan and the 3rd of described cross valve (12) the of described 4th electromagnetic valve (7)
The common port of end E and the 4th end S connects the gas returning port of described compressor by gas-liquid separator (16),
The import of described gas-liquid separator (16) connect the outfan of described 3rd electromagnetic valve (6), the described 4th
The outfan of electromagnetic valve (7) and the 3rd end E of described cross valve (12) and the common port of the 4th end S,
The outlet of described gas-liquid separator (16) connects the gas returning port of described compressor.
5. multi-online air-conditioning system as claimed in claim 4, it is characterised in that described gas-liquid separator
(16) it is additionally provided with low pressure switch (18) on outlet and the link circuit of the gas returning port of described compressor
With low-pressure sensor (17).
6. multi-online air-conditioning system as claimed in claim 1, it is characterised in that the row of described compressor
Between QI KOU and described oil eliminator (3) or described oil eliminator (3) and described first electromagnetic valve (4),
Described second electromagnetic valve (5), described cross valve (12) common port between be additionally provided with high-pressure and open
Close (21) and high-pressure pressure sensor (22).
7. multi-online air-conditioning system as claimed in claim 1, it is characterised in that described compressor includes
The multiple compressors being arranged in parallel, described indoor set is multiple stage.
8. multi-online air-conditioning system as claimed in claim 7, it is characterised in that described compressor is two
Individual, the respectively first compressor (1) and the second compressor (2), the oil of described oil eliminator (3) is defeated
Go out to hold C1 to pass through the first capillary tube (20) and connect the gas returning port of described first compressor (1), described oil
The oily outfan C1 of separator (3) connects described second compressor (2) by the second capillary tube (19)
Gas returning port；
Described indoor set is two, the respectively first indoor set (27) and the second indoor set (13).
9. multi-online air-conditioning system as claimed in claim 8, it is characterised in that described first compressor
(1) it is frequency-changeable compressor, constant speed compressor or digital compressor；Described second compressor (2) is for becoming
Frequently compressor, constant speed compressor or digital compressor.
10. the multi-online air-conditioning system as described in any one of claim 1-9, it is characterised in that described
One air cooling heat exchanger (8) is identical with the model of described second air cooling heat exchanger (10)；Described first is outdoor
Blower fan (9) is identical with the model of described second outdoor fan (11)；Described first electromagnetic valve (4),
Described second electromagnetic valve (5), described 3rd electromagnetic valve (6) and the model of described 4th electromagnetic valve (7)
The most identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620406224.7U CN205619641U (en) | 2016-05-05 | 2016-05-05 | Multi -split air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620406224.7U CN205619641U (en) | 2016-05-05 | 2016-05-05 | Multi -split air conditioning system |
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|---|---|
| CN205619641U true CN205619641U (en) | 2016-10-05 |
Family
ID=57025291
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| CN201620406224.7U Expired - Fee Related CN205619641U (en) | 2016-05-05 | 2016-05-05 | Multi -split air conditioning system |
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| CN (1) | CN205619641U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018082281A1 (en) * | 2016-11-07 | 2018-05-11 | 广东美的暖通设备有限公司 | Multi-split system and liquid return prevention control method thereof |
| CN108156796A (en) * | 2017-12-29 | 2018-06-12 | 广东申菱环境系统股份有限公司 | A kind of Intelligent server cabinet being gas-cooled and liquid cold junction closes |
| CN109708216A (en) * | 2018-12-06 | 2019-05-03 | 珠海格力电器股份有限公司 | Modular multi-split air conditioning system and control method thereof |
| CN111503851A (en) * | 2020-04-29 | 2020-08-07 | 广东美的暖通设备有限公司 | Control method and device of multi-split air conditioning system |
| CN112066587A (en) * | 2020-09-29 | 2020-12-11 | 广州市华德工业有限公司 | Cold source device, double-cold-source cold and hot water unit and control method |
| CN112594871A (en) * | 2020-12-31 | 2021-04-02 | 广东积微科技有限公司 | Defrosting control method of multifunctional multi-split system with double four-way valves |
| CN113883765A (en) * | 2021-10-21 | 2022-01-04 | 珠海格力电器股份有限公司 | Oil return control method, device and equipment, air conditioning system and storage medium |
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2016
- 2016-05-05 CN CN201620406224.7U patent/CN205619641U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018082281A1 (en) * | 2016-11-07 | 2018-05-11 | 广东美的暖通设备有限公司 | Multi-split system and liquid return prevention control method thereof |
| US11098936B2 (en) | 2016-11-07 | 2021-08-24 | Gd Midea Heating & Ventilating Equipment Co., Ltd. | Multi-split system and liquid return prevention control method thereof |
| CN108156796A (en) * | 2017-12-29 | 2018-06-12 | 广东申菱环境系统股份有限公司 | A kind of Intelligent server cabinet being gas-cooled and liquid cold junction closes |
| CN108156796B (en) * | 2017-12-29 | 2023-09-15 | 广东申菱环境系统股份有限公司 | Intelligent server cabinet combining air cooling and liquid cooling |
| CN109708216A (en) * | 2018-12-06 | 2019-05-03 | 珠海格力电器股份有限公司 | Modular multi-split air conditioning system and control method thereof |
| CN111503851A (en) * | 2020-04-29 | 2020-08-07 | 广东美的暖通设备有限公司 | Control method and device of multi-split air conditioning system |
| CN112066587A (en) * | 2020-09-29 | 2020-12-11 | 广州市华德工业有限公司 | Cold source device, double-cold-source cold and hot water unit and control method |
| CN112594871A (en) * | 2020-12-31 | 2021-04-02 | 广东积微科技有限公司 | Defrosting control method of multifunctional multi-split system with double four-way valves |
| CN113883765A (en) * | 2021-10-21 | 2022-01-04 | 珠海格力电器股份有限公司 | Oil return control method, device and equipment, air conditioning system and storage medium |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161005 |