CN205619617U - Multi -split air conditioning system - Google Patents
Multi -split air conditioning system Download PDFInfo
- Publication number
- CN205619617U CN205619617U CN201620407794.8U CN201620407794U CN205619617U CN 205619617 U CN205619617 U CN 205619617U CN 201620407794 U CN201620407794 U CN 201620407794U CN 205619617 U CN205619617 U CN 205619617U
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- air
- cross valve
- compressor
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- 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 cross valve, second cross valve and third 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, the evaporimeter is made to another air -cooled heat exchanger, reaches to reduce air -cooled condenser area, increases the purpose of air cooling evaporator area, and the lowering system returns the risk of liquid refrigerants, regard an air -cooled heat exchanger as the evaporimeter when high temperature heats, another heat exchanger is realized 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 air -cooled heat exchanger continues to provide as the evaporimeter and heats, it can continuously provide the demand that heats to satisfy 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 cross valve, the first end D1 of described first cross valve connects the coolant output of described oil eliminator
End B1, the second end C1 described first air cooling heat exchanger of connection of described first cross valve, the described 1st
Logical valve is used for controlling described first air cooling heat exchanger and uses as condenser or use as vaporizer；
Second cross valve, the first end D2 of described second cross valve connects the coolant output of described oil eliminator
End B1, the second end C2 described second air cooling heat exchanger of connection of described second cross valve, the described 2nd 4
Logical valve is used for controlling described second air cooling heat exchanger and uses as condenser or use as vaporizer；
3rd cross valve, the first end D3 of described 3rd cross valve connects the coolant output of described oil eliminator
End B1, the second end C3 of described 3rd cross valve connect described low-pressure shutoff valve, described 3rd cross valve
The 3rd end E3 and the common port of the 4th end S3 connect the 3rd end E1 of described first cross valve and the 4th end
The common port of S1, the 3rd end E2 of described second cross valve and the common port of the 4th end S2 and described pressure
The gas returning port of contracting machine, described 3rd cross valve is used for controlling described indoor set and still heats for refrigeration.
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 3rd end E3 of described 3rd cross valve and the 4th end
The common port of S3 connects the gas returning port of described compressor, entering of described gas-liquid separator by gas-liquid separator
Mouth connects the 3rd end E1 and the 4th end S1, the 3rd end of described second cross valve of described first cross valve
E2 and the 4th end S2 and the 3rd end E3 of described 3rd cross valve and the common port of the 4th end S3, institute
The outlet stating 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 cross valve, described second cross valve, described 3rd four-way
High-pressure switch and high-pressure pressure sensor it is additionally provided with between the common port of valve.
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 cross valve, described second cross valve, described 3rd cross valve model 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 cross valve, the second cross valve and the 3rd cross valve；Wherein, separating of oil
The entrance point A1 of device connects the air vent of compressor, and the oily outfan C1 of oil eliminator is by capillary tube even
Connect the gas returning port of compressor；First air cooling heat exchanger is connected with the high-pressure stop valve of off-premises station；First is outdoor
Blower fan is for the first air cooling heat exchanger enhanced heat exchange；Second air cooling heat exchanger and the first air cooling heat exchanger phase
The most independently and it is connected with high-pressure stop valve；Second outdoor fan and the first outdoor fan are separate, and second
Outdoor fan is for the second air cooling heat exchanger enhanced heat exchange；The input of the indoor set liquid by multi-connected machine
Side branch pipe is connected with high-pressure stop valve, and the outfan of indoor set passes through gas side branch pipe and the room of multi-connected machine
The low-pressure shutoff valve of outer machine connects；First end D1 of the first cross valve connects the coolant outfan of oil eliminator
B1, the second end C1 of the first cross valve connect the first air cooling heat exchanger, and the first cross valve is used for control first
Air cooling heat exchanger uses as condenser or uses as vaporizer；First end D2 of the second cross valve connects
The coolant outfan B1 of oil eliminator, the second end C2 of the second cross valve connect the second air cooling heat exchanger,
Second cross valve uses as condenser for controlling the second air cooling heat exchanger or uses as vaporizer；The
First end D3 of three cross valves connects the coolant outfan B1 of oil eliminator, the second end of the 3rd cross valve
C3 connects low-pressure shutoff valve, and the common port of the 3rd end E3 and the 4th end S3 of the 3rd cross valve connects first
3rd end E1 of cross valve and the common port of the 4th end S1, the 3rd end E2 of the second cross valve and the 4th end
The common port of S2 and the gas returning port of compressor, the 3rd cross valve is used for controlling indoor set for refrigeration or system
Heat.
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
Separator the 3, first air cooling heat exchanger the 7, first outdoor fan the 8, second air cooling heat exchanger the 9, second Room
Outer blower fan 10, indoor set, the first cross valve the 4, second cross valve 5 and the 3rd cross valve 6；Wherein, oil
The entrance point A1 of separator 3 connects the air vent of compressor, and the oily outfan C1 of oil eliminator 3 passes through
Capillary tube connects the gas returning port of compressor；First air cooling heat exchanger 7 connects with the high-pressure stop valve 13 of off-premises station
Connect；First outdoor fan 8 is for the first air cooling heat exchanger 7 enhanced heat exchange；Second air cooling heat exchanger 9
Separate with the first air cooling heat exchanger 7 and be connected with high-pressure stop valve 13；Second outdoor fan 10 with
First outdoor fan 8 is separate, and the second outdoor fan 10 is for changing to the second air cooling heat exchanger 9 strengthening
Heat；The input of indoor set is connected with high-pressure stop valve 13 by the liquid side branch pipe 22 of multi-connected machine, room
The outfan of interior machine is connected with the low-pressure shutoff valve 14 of off-premises station by the gas side branch pipe 23 of multi-connected machine；
First end D1 of the first cross valve 4 connects the coolant outfan B1 of oil eliminator 3, the first cross valve 4
The second end C1 connect the first air cooling heat exchanger 7, the first cross valve 4 is for controlling the first air cooling heat exchanger
7 use as condenser or use as vaporizer；First end D2 of the second cross valve 5 connects separating of oil
The coolant outfan B1 of device 3, the second end C2 of the second cross valve 5 connect the second air cooling heat exchanger 9, the
Two cross valves 5 use as condenser for controlling the second air cooling heat exchanger 9 or use as vaporizer；
First end D3 of the 3rd cross valve 6 connects the coolant outfan B1 of oil eliminator 3, the 3rd cross valve 6
Second end C3 connect low-pressure shutoff valve 14, the 3rd end E3's and the 4th end S3 of the 3rd cross valve 6
Common port connects the 3rd end E1 and the common port of the 4th end S1, second cross valve 5 of the first cross valve 4
The 3rd end E2 and the common port of the 4th end S2 and the gas returning port of compressor, the 3rd cross valve 6 is used for
Control indoor set still to heat for refrigeration.It is, the first end D1 of the first cross valve 4, the second four-way
The coolant that first end D2 of valve 5 and the first end D3 of the 3rd cross valve 6 is all connected with oil eliminator 3 is defeated
Go out to hold B1, for the ease of installing, make the coolant outfan of oil eliminator 3 connect the first cross valve 4, the
The common port of the first end of two cross valve the 5, the 3rd cross valves 6.
It should be noted that cross valve (the most above-mentioned first cross valve the 4, second cross valve the 5, the 3rd 4
Logical valve 6) power down when, the first end D and the second end C conducting, the 3rd end E and the 4th end S leads
Logical；Cross valve is powering on when, and the first end D and the 3rd end E turns on, 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 7 and the second air-cooled heat exchange of two air cooling heat exchangers
Device 9) replace an original air cooling heat exchanger so that and multi-online air-conditioning system is when cryogenic refrigeration, by cutting
A disconnected air cooling heat exchanger, reaches to reduce the purpose of air-cooled condenser area, or one of them is air-cooled
Condenser made by heat exchanger, and another one air cooling heat exchanger makees vaporizer, reaches to reduce air-cooled condenser area,
Increase the purpose of wind-cooled evaporator area, thus reduce system and return the risk of liquid refrigerants；When multi-connected machine is empty
Adjusting system when high temperature heats, by using an air cooling heat exchanger as vaporizer, another heat exchanger make
For condenser, it is achieved control to maintain in the reasonable scope by system pressure and suction temperature；Work as multi-connected machine
Air conditioning system is when low-temperature heating, in the case of needing defrost after off-premises station air cooling heat exchanger frosting, logical
Crossing and an air cooling heat exchanger is made condenser defrost, another air cooling heat exchanger is made vaporizer and is continued to provide system
Heat, meets unit and can persistently provide the demand heated, thus ensure that the comfortableness of user.Therefore,
This utility model provide multi-online air-conditioning system be effectively increased multi-online air-conditioning system cryogenic refrigeration,
Reliability and low-temperature heating when 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 7 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 7 is connected with high-pressure stop valve 13 by the first electric expansion valve 11, utilize this
One electric expansion valve 11 can accurately control to flow through the cold medium flux of the first air cooling heat exchanger 7.
In like manner, the second air cooling heat exchanger 9 is connected with high-pressure stop valve 13 by the second electric expansion valve 12,
Second electric expansion valve 12 is for controlling to flow through the cold medium flux of the second air cooling heat exchanger 9, thus ensures the
Two air cooling heat exchangers 9 have good refrigeration as condenser when using, or make as vaporizer
There is good heating effect used time.
In order to optimize technique scheme further, the 3rd end E3 and the 4th end S3 of the 3rd cross valve 6
Common port connect the gas returning port of compressor by gas-liquid separator 15, the import of gas-liquid separator 15 is even
Meet the 3rd end E1 and the 4th end S1, the 3rd end E2 and the 4th of the second cross valve 5 of the first cross valve 4
End S2 and the 3rd end E3 of the 3rd cross valve 6 and the common port of the 4th end S3, gas-liquid separator 15
Outlet connect compressor gas returning port.This gas-liquid separator 15 is for the gas flowing into compressor return air mouth
State coolant 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 15 outlet with the link circuit of the gas returning port of compressor on be additionally provided with low
Pressure pressure switch 17.When gas-liquid separator 15 exports the gas pressure between compressor return air mouth less than pre-
If during value, low pressure switch 17 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 15 outlet
Low-pressure sensor 16.Multi-connected machine is automatically controlled by what detection low-pressure sensor 16 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 11 and the second electric expansion valve 12 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 four-way
It is additionally provided with high-pressure switch 18 between the common port of valve the 4, second cross valve the 5, the 3rd cross valve 6.
When the pressure of compressor expellant gas looked into preset value, high-pressure switch 18 disconnects automatically, and to
Electric-control system sends a pressure signal, thus electric-control system is taked according to the pressure signal received accordingly
Protective measure, such as, turn off compressor.
Pass it addition, the common port of first cross valve the 4, second cross valve 5 and cross valve is provided with high-pressure
Sensor 19, multi-connected machine is automatically controlled by the system high pressure pressure that detection high-pressure pressure sensor 19 is fed back in real time,
Make corresponding control or protection after the logic control computing of participation system, high-pressure such as detected,
The first electric expansion valve 11 and aperture size of the second electric expansion valve 12 is adjusted in real time by logical operations.
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 21
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 20
The gas returning port of contracting machine 2.
Further, indoor set is two, the respectively first indoor set 24 and the second indoor set 25.Such as figure
Shown in 1, the input A2 of the first indoor set 24 and input A3 of the second indoor set 25 all passes through
Liquid side branch pipe 22 is connected with high-pressure stop valve 13, the outfan B2 and second of the first indoor set 24
The outfan B3 of indoor set 25 is all connected with low-pressure shutoff valve 14 by the gas side branch pipe 23 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 cross valve 4 and the second cross valve 5 power down, the
One electric expansion valve 11 and the second electric expansion valve 12 are opened under the control of electric-control system, the 3rd four-way
Valve 6 powers on.After a coolant part for the High Temperature High Pressure that compressor is discharged condenses to the first air cooling heat exchanger 7
Through the second electricity after the first electric expansion valve 11 reducing pressure by regulating flow, a part to the second air cooling heat exchanger 9 condensation
Sub-expansion valve 12 reducing pressure by regulating flow, the liquid refrigerants after two air cooling heat exchanger reducing pressure by regulating flows is to high-pressure stop valve
Respectively to first indoor set the 24, second indoor set 25 devaporation after liquid side branch pipe 22 shunts after 13
Heat absorption, becomes gaseous coolant after gas side branch pipe 23 collaborates through the 3rd cross valve 6 after evaporation endothermic
Return to gas-liquid separator 15, 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 the 3rd cross valve 6 powers on, the first end D3 and of the 3rd cross valve 6
Three end E3 conductings, the High Temperature High Pressure coolant that compressor is discharged is fallen by capillary pipe plug in the 3rd cross valve 6,
Flow only through a small amount of coolant and return to gas-liquid separator 15 through capillary tube.
When normally heating (i.e. low-temperature heating), the 3rd cross valve 6 power down, the first electric expansion valve 11,
Second electric expansion valve 12 is opened under the control of electric-control system, first cross valve the 4, second cross valve 5
Power on.The coolant of the High Temperature High Pressure that compressor is discharged is logical after the 3rd cross valve 6 to low-pressure shutoff valve 14
Condense, after condensation to first indoor set the 24, second indoor set 25 respectively after crossing branch pipe 23 shunting of gas side
Liquid refrigerants collaborate through liquid side branch pipe 22, a part through first electric expansion valve 11 throttling fall
After the first air cooling heat exchanger 7 evaporation endothermic, gas-liquid separator 15 is returned to through the first cross valve 4 after pressure,
A part after the second electric expansion valve 12 reducing pressure by regulating flow to warp after the second air cooling heat exchanger 9 evaporation endothermic
Cross the second cross valve 5 and return to gas-liquid separator 15, be eventually returned to compressor and complete to heat circulation, reach many
The purpose that 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 9, makes multi-connected machine
First cross valve 4 power down of air conditioning system, the second cross valve 5 powers on, and the first electric expansion valve 11 is at electricity
Opening under the control of Ore-controlling Role, the second electric expansion valve 12 is closed, and the 3rd cross valve 6 powers on.Compressor
Discharge High Temperature High Pressure coolant all to first air cooling heat exchanger 7 condensation after through the first electric expansion valve 11
Reducing pressure by regulating flow, coolant liquid refrigerants after the first air cooling heat exchanger 7 reducing pressure by regulating flow is through high-pressure stop
After valve 13, go to first indoor set the 24, second indoor set 25 respectively after being shunted by liquid side branch pipe 22
Evaporation endothermic；Become gaseous coolant after evaporation endothermic to be ended by low pressure after gas side branch pipe 23 collaborates
Return to gas-liquid separator 15 through the 3rd cross valve 6 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.
Wherein, owing to the second cross valve 5 powers on, the second electric expansion valve 12 is closed, and compressor is discharged
High Temperature High Pressure coolant is fallen by capillary pipe plug in the second cross valve 5, and the too small amount of coolant of refrigeration stream is through hair
Tubule returns to gas-liquid separator 15, and the coolant in the second air cooling heat exchanger 9 is after the second cross valve 5
Returning to gas-liquid separator 15, do not circulate in being namely equivalent to the second air cooling heat exchanger 9 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 7 is made
Condenser, the second air cooling heat exchanger 9 is made vaporizer, is controlled as follows: make the first cross valve 4 power down, the
Two cross valves 5 power on, and the first electric expansion valve 11 is opened under the control of electric-control system, and the second electronics is swollen
Swollen valve 12 is opened under the control of electric-control system, and the 3rd cross valve 6 powers on.The high temperature that compressor is discharged is high
Pressure coolant all to first air cooling heat exchanger 7 condensation after through the first electric expansion valve 11 reducing pressure by regulating flow, cold
Matchmaker's liquid refrigerants part after the first air cooling heat exchanger 7 reducing pressure by regulating flow is through the second electric expansion valve
Return to gas-liquid after passing through the second cross valve 5 after 12 reducing pressure by regulating flows to the second air cooling heat exchanger 9 evaporation endothermic divide
From device 15, after another part coolant is by shunting by liquid side branch pipe 22 after high-pressure stop valve 13 again
Respectively to first indoor set the 24, second indoor set 25 devaporation heat absorption, after evaporation endothermic, become gaseous coolant
Gas is returned to through the 3rd cross valve 6 again by after low-pressure shutoff valve 14 after gas side branch pipe 23 collaborates
Liquid/gas separator 15, is eventually returned to compressor and completes kind of refrigeration cycle, reaches the mesh of multi-online air-conditioning system refrigeration
's.Also ensure that the system reliability freezed at low ambient temperatures simultaneously.
When high temperature heats, condenser made by the heat exchanger of first indoor set the 24, second indoor set 25, 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 7 as vaporizer, the second air cooling heat exchanger 9 as condenser, the first indoor set 24, second
Condenser made by the heat exchanger of indoor set 25.Control process is as follows: the 3rd cross valve 6 power down, the first electronics
Expansion valve the 11, second electric expansion valve 12 is opened under the control of electric-control system, and the first cross valve 4 powers on,
Second cross valve 5 power down, the High Temperature High Pressure coolant part that compressor is discharged is after the 3rd cross valve 6
To low-pressure shutoff valve 14 again through gas side branch pipe 23 shunt after respectively to first indoor set the 24, second Room
Condensation in interior machine 25, condensed coolant arrives high-pressure stop valve 13 after liquid side branch pipe 22 collaborates
With first between electric expansion valve 11 and the second electric expansion valve 12, the High Temperature High Pressure that compressor is discharged is cold
Matchmaker's another part after the second cross valve 5 to second air cooling heat exchanger 9 condensation after through the second electronics
High-pressure stop valve 13 and the first electric expansion valve 11 and the second electric expansion valve 12 is reached after expansion valve 12
Between, the condensed coolant of two-way eventually passes after the first electric expansion valve 11 to the first air cooling heat exchanger 7
Evaporation endothermic, is then passed through returning to compressor after the first cross valve 4 is eventually returned to gas-liquid separator 15 and completes
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 7
With the second air cooling heat exchanger 9) replace an original air cooling heat exchanger so that and multi-online air-conditioning system is at low temperature
During 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, and another one air cooling heat exchanger makees vaporizer, reaches to reduce
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 vaporizer,
Another heat exchanger is as condenser, it is achieved control to maintain reasonable model by system pressure and suction temperature
In enclosing；When multi-online air-conditioning system is at low-temperature heating, needs after off-premises station air cooling heat exchanger frosting
In the case of frost, by an air cooling heat exchanger is made condenser defrost, another air cooling heat exchanger steams
Send out device continuation offer to heat, meet unit and the demand heated can be persistently provided, thus ensure that user
Comfortableness.Therefore, the multi-online air-conditioning system that this utility model provides is effectively increased multi-gang air-conditioner
The system reliability when cryogenic refrigeration, high temperature heat and the indoor comfortable during low-temperature heating needs defrosting
Property.
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 7
Identical with the model of the second air cooling heat exchanger 9；First outdoor fan 8 and the model of the second outdoor fan 10
Identical；The model of first cross valve the 4, second cross valve the 5, the 3rd cross valve 6 is identical.Need explanation
It is, above-mentioned first air cooling heat exchanger 7 and the model of the second air cooling heat exchanger 9, it is also possible to different.First
The model of outdoor fan 8 and the second outdoor fan 10 also can be different, do not limit.In like manner, first
Cross valve the 4, second cross valve 5 can differ the most identical or entirely with the model of the 3rd cross valve 6,
Or incomplete same, do not limit.
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 (7), described first air cooling heat exchanger (7) and off-premises station
Valve (13) connects；
First outdoor fan (8), described first outdoor fan (8) is for described first air-cooled heat exchange
Device (7) enhanced heat exchange；
Second air cooling heat exchanger (9), described second air cooling heat exchanger (9) and described first air-cooled heat exchange
Device (7) is separate and is connected with described high-pressure stop valve (13)；
Second outdoor fan (10), described second outdoor fan (10) and described first outdoor fan (8)
Separate, described second outdoor fan (10) is for changing to the strengthening of described second air cooling heat exchanger (9)
Heat；
Indoor set, the input of described indoor set is by liquid side branch pipe (22) of multi-connected machine and described height
Pressure cutoff valve (13) connects, the outfan of described indoor set gas side branch pipe (23) by multi-connected machine
It is connected with the low-pressure shutoff valve (14) of off-premises station；
First cross valve (4), the first end D1 of described first cross valve (4) connects described oil eliminator
(3) coolant outfan B1, the second end C1 of described first cross valve (4) connect described first wind
Cold heat exchanger (7), described first cross valve (4) is used for controlling described first air cooling heat exchanger (7) and makees
Use for condenser or use as vaporizer；
Second cross valve (5), the first end D2 of described second cross valve (5) connects described oil eliminator
(3) coolant outfan B1, the second end C2 of described second cross valve (5) connect described second wind
Cold heat exchanger (9), described second cross valve (5) is used for controlling described second air cooling heat exchanger (9) and makees
Use for condenser or use as vaporizer；
3rd cross valve (6), the first end D3 of described 3rd cross valve (6) connects described oil eliminator
(3) coolant outfan B1, the second end C3 of described 3rd cross valve (6) connect described low pressure and cut
Only valve (14), the common port of the 3rd end E3 and the 4th end S3 of described 3rd cross valve (6) connects institute
State the 3rd end E1 and the common port of the 4th end S1, described second cross valve (5) of the first cross valve (4)
The 3rd end E2 and the common port of the 4th end S2 and the gas returning port of described compressor, described 3rd four-way
Valve (6) 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 (7) is connected with described high-pressure stop valve (13) by the first electric expansion valve (11), and described the
One electric expansion valve (11) flows through the cold medium flux of described first air cooling heat exchanger (7) 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 (9) is connected with described high-pressure stop valve (13) by the second electric expansion valve (12), and described the
Two electric expansion valves (12) flow through the cold medium flux of described second air cooling heat exchanger (9) for control.
4. multi-online air-conditioning system as claimed in claim 1, it is characterised in that described 3rd cross valve
(6) the 3rd end E3 and the common port of the 4th end S3 connect described compression by gas-liquid separator (15)
The gas returning port of machine, the import of described gas-liquid separator (15) connects the 3rd of described first cross valve (4)
End E1 and the 4th end S1, the 3rd end E2 and the 4th end S2 of described second cross valve (5) and described
3rd end E3 of the 3rd cross valve (6) and the common port of the 4th end S3, described gas-liquid separator (15)
Outlet connect described compressor gas returning port.
5. multi-online air-conditioning system as claimed in claim 4, it is characterised in that described gas-liquid separator
(15) it is additionally provided with low pressure switch (17) on outlet and the link circuit of the gas returning port of described compressor
With low-pressure sensor (16).
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 cross valve (4),
Described second cross valve (5), described 3rd cross valve (6) common port between be additionally provided with high pressure pressure
Power switch (18) and high-pressure pressure sensor (19).
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 (21) 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 (20)
Gas returning port；
Described indoor set is two, the respectively first indoor set (24) and the second indoor set (25).
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 (7) is identical with the model of described second air cooling heat exchanger (9)；Described first is outdoor
Blower fan (8) is identical with the model of described second outdoor fan (10)；Described first cross valve (4),
Described second cross valve (5), described 3rd cross valve (6) model identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620407794.8U CN205619617U (en) | 2016-05-05 | 2016-05-05 | Multi -split air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620407794.8U CN205619617U (en) | 2016-05-05 | 2016-05-05 | Multi -split air conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205619617U true CN205619617U (en) | 2016-10-05 |
Family
ID=57025936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620407794.8U Active CN205619617U (en) | 2016-05-05 | 2016-05-05 | Multi -split air conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205619617U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107747827A (en) * | 2017-11-14 | 2018-03-02 | 科林贝思（深圳）科技有限公司 | The air source heat pump that a kind of wind system and water system coexist |
| CN107763876A (en) * | 2017-10-31 | 2018-03-06 | 广东美的暖通设备有限公司 | Multiple on-line system |
| CN108151350A (en) * | 2017-12-20 | 2018-06-12 | 广东美的暖通设备有限公司 | Three control multi-line systems and its control method |
| CN111412696A (en) * | 2020-04-09 | 2020-07-14 | 珠海格力电器股份有限公司 | Multifunctional integrated air conditioner |
| CN114183834A (en) * | 2020-09-14 | 2022-03-15 | 青岛海信日立空调系统有限公司 | Air conditioner |
-
2016
- 2016-05-05 CN CN201620407794.8U patent/CN205619617U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107763876A (en) * | 2017-10-31 | 2018-03-06 | 广东美的暖通设备有限公司 | Multiple on-line system |
| CN107747827A (en) * | 2017-11-14 | 2018-03-02 | 科林贝思（深圳）科技有限公司 | The air source heat pump that a kind of wind system and water system coexist |
| CN108151350A (en) * | 2017-12-20 | 2018-06-12 | 广东美的暖通设备有限公司 | Three control multi-line systems and its control method |
| CN111412696A (en) * | 2020-04-09 | 2020-07-14 | 珠海格力电器股份有限公司 | Multifunctional integrated air conditioner |
| CN114183834A (en) * | 2020-09-14 | 2022-03-15 | 青岛海信日立空调系统有限公司 | Air conditioner |
| CN114183834B (en) * | 2020-09-14 | 2023-06-27 | 青岛海信日立空调系统有限公司 | Air conditioner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205619616U (en) | Multi -split air conditioning system | |
| CN205619641U (en) | Multi -split air conditioning system | |
| CN205619617U (en) | Multi -split air conditioning system | |
| CN108131858B (en) | Heat pump air conditioning system and control method thereof | |
| CN103983044B (en) | A kind of Air-Cooled Heat Pump Unit | |
| CN104197581A (en) | Refrigerating and heating method and system of three-pipe heat recovery multiple-on-line system | |
| CN104154673B (en) | A kind of refrigerating method of Three-pipe heat recovery multi-connected machine system and system | |
| CN106382701A (en) | Multi-split air conditioner and outdoor unit thereof, and control method and device | |
| CN104197582B (en) | Multi-connection air conditioning system | |
| CN104197570B (en) | The heating method of a kind of Three-pipe heat recovery multi-connected machine system and system | |
| CN205619615U (en) | Multi -split air conditioning system | |
| CN104197499A (en) | Multi-connection air conditioning system | |
| CN104197571A (en) | Three-pipe heat recovery multiple-on-line system | |
| CN107421072A (en) | Air conditioner and high-temperature-resistant control method thereof | |
| CN206861943U (en) | Hot gas bypass defrosting structure, air-conditioner outdoor unit and air conditioner | |
| CN104197432A (en) | Multi-connection air conditioning system and refrigeration method | |
| CN104165475A (en) | Multi-split air-conditioning system and heating method | |
| CN203893480U (en) | Air cooling heat pump unit | |
| CN104214985B (en) | A kind of multi-connected air conditioning system and cryogenic refrigeration method | |
| CN109442788A (en) | Defrosting method of air conditioner and air conditioner | |
| CN103968594B (en) | A kind of Air-Cooled Heat Pump Unit | |
| CN110107500A (en) | A kind of double-cylinder variable-capacity compressor system, transfiguration increasing enthalpy system and control method | |
| CN207146975U (en) | Heat recovery multi-split air conditioning system | |
| CN104180559A (en) | Multi-unit system | |
| CN207702631U (en) | Air conditioner cooling cycle system and air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |