CN105716334B - A kind of subway train air conditioning unit with air draft subcooler - Google Patents
A kind of subway train air conditioning unit with air draft subcooler Download PDFInfo
- Publication number
- CN105716334B CN105716334B CN201610086758.0A CN201610086758A CN105716334B CN 105716334 B CN105716334 B CN 105716334B CN 201610086758 A CN201610086758 A CN 201610086758A CN 105716334 B CN105716334 B CN 105716334B
- Authority
- CN
- China
- Prior art keywords
- air
- subcooler
- evaporator
- compartment
- condenser
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B40/00—Subcoolers, desuperheaters or superheaters
- F25B40/02—Subcoolers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
Abstract
The present invention relates to a kind of subway train air conditioning unit with air draft subcooler, which includes refrigerant circuit and air loop；Filling refrigerant in the refrigerant circuit, including compressor, condenser, throttling set and evaporator, the refrigerant circuit further includes subcooler, wherein, compressor, condenser, subcooler, throttling set and evaporator recycle connection successively；The air loop includes evaporator air circuit, subcooler air loop and condenser air circuit.Compared with prior art, the present invention is cooled down using compartment air draft, is not consumed the additional energy, and add a subcooler, is increased the refrigerating efficiency of air-conditioner set, and simulation result shows after adding subcooler, and refrigeration performance system improves 9%.
Description
Technical field
The present invention relates to subway train air conditioning units, and in particular to a kind of subway train air conditioning machine with air draft subcooler
Group.
Background technology
Subway train air conditioning is mostly single cooling system.In existing subway train air conditioning unit, in compartment air draft directly pass through
Exhaust fan, air duct drain into outdoor environment, and there are huge cold wastes.In addition, the size of subway train air conditioning unit by
Stringent limitation, the heat transfer effect of heat exchanger is poor, and the refrigerating efficiency of unit is low.
Invention content
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide one kind, low energy consumption, refrigeration effect
The good subway train air conditioning unit with air draft subcooler of rate.
The purpose of the present invention can be achieved through the following technical solutions：A kind of subway train air conditioning with air draft subcooler
Unit, the air-conditioner set include refrigerant circuit and air loop；Refrigerant is equipped in the refrigerant circuit, including compression
Machine, condenser, throttling set and evaporator, the refrigerant circuit further include subcooler, wherein, compressor, condenser, mistake
Cooler, throttling set and evaporator recycle connection successively；The air loop includes evaporator air access and subcooler is empty
Gas access；
The evaporator air circuit includes sequentially connected evaporator and breeze fan, utilizes refrigerant coolant compartment
Outer fresh air and the mixed gas of return air in train, and pass through breeze fan and return to mixed gas in compartment；
The subcooler air loop includes sequentially connected subcooler and exhaust fan, is cooled down using air in a car compartment
Refrigerant in refrigerant circuit.
Refrigerant subcooler is added on refrigerant circuit, refrigerant is cooled down with cryogenic gas in compartment, on the one hand can drop
Low condensation temperature improves operational reliability and the safety of unit；On the other hand, refrigeration unit unit mass flow can be increased
Refrigerating capacity, compressor frequency can be reduced by producing the refrigerating capacity of same size, hence it is evident that improve unit efficiency.
The condenser includes condenser coolant channel and condenser air passage, and the condenser coolant channel is
A part for refrigerant circuit, entrance and air communication outside compartment, the condenser air passage of the condenser air passage
Outlet by air communication outside condensation fan and compartment, utilize the refrigerant in air cooling refrigerant circuit outside compartment, profit
With the refrigerant in air cooling refrigerant circuit outside compartment.
The subcooler includes subcooler coolant channel and subcooler air duct, and the subcooler coolant channel is
A part for refrigerant circuit, the entrance of the cooler air duct is connected by No.1 exhaust outlet with air in a car compartment, cold
The outlet of device air duct cools down refrigerant again by air communication outside exhaust fan and compartment using the cold air in compartment
Refrigerant in circuit.
The throttling set includes capillary, short tube, electric expansion valve, heating power expansion valve or orifice plate.
The evaporator includes evaporator coolant channel and evaporator air passage, and the evaporator coolant channel is
A part for refrigerant circuit, a part of the evaporator air passage for air loop, evaporator air passage entrance
It is connected by gas mixer with air outside compartment and air in a car compartment, evaporator air passage outlet passes through breeze fan and vehicle
Air communication in compartment cools down mixing air using the refrigerant in refrigerant circuit.
Filter is set between the gas mixer and evaporator air passage entrance, to improve the sky of compartment air-supply
Gas quality.
In refrigerant circuit, first under compressor effect, low-temperature low-pressure refrigerant steam becomes high temperature and high pressure steam,
Exothermic condensation becomes high temperature high pressure liquid within the condenser, is further cooled into subcooler, the refrigerant liquid warp of supercooling
Throttling set enters evaporator, and evaporation of absorbing heat in evaporator becomes the refrigerant vapour of low-temp low-pressure, completes refrigeration cycle.
In air loop, outdoor fresh air is mixed through fresh wind port into Gas inlet tube with the return air in compartment, mixed air
First enter evaporator through air hose, by cool-down dehumidification in evaporator, acted on by breeze fan, be sent into compartment.
The present invention can improve the operational reliability of subway train air conditioning unit and the principle of refrigerating efficiency is：Add one
Refrigerant subcooler is equivalent to the heat exchange area of increase condenser, the heat transfer effect enhancing of condenser, so as to reduce condensation temperature
Degree, avoids high voltage protective, is conducive to improve unit operation reliability and safety；In addition, the temperature of compartment air draft is significantly lower than
Outdoor air enters subcooler using compartment air draft and exchanges heat, and cooling effect is more preferable, can be effectively increased system degree of supercooling, increases single
The refrigerating capacity of position refrigerant flow, so as to improve the refrigerating efficiency of Train air conditioning unit.
Compared with prior art, beneficial effects of the present invention are embodied in following several respects：
(1) it is cooled down using compartment air draft, is not consumed the additional energy；
(2) wind output channel is integrated into air-conditioner set in whole or in part, and adds a refrigerant subcooler, subcooler
The cold of recycling increases system degree of supercooling, increases specific refrigerating effect, reduces system refrigerant flow path, reduces condensation pressure
Power reduces compressor capacity, improves unit eer, and simulation result shows after adding subcooler, Train air conditioning unit
Refrigeration performance system is promoted to 2.4 from 2.2, improves 9%.
Description of the drawings
Fig. 1 is the connection diagram of the present invention.
Wherein, 1 is compressor, and 2 be condenser, and 3 be subcooler, and 4 be throttling set, and 5 be evaporator, and 6 be compartment, and 7 are
Breeze fan, 8 be exhaust fan, and 9 be condensation fan, and 10~18 be connecting refrigerant lines, and 21 be return air inlet, and 22 be fresh wind port,
23 be air outlet, and 24 be No.1 exhaust outlet, and 25 be No. two exhaust outlets, and 26 be inlet scoop, and 27 be air outlet, and 31~41 be air hose.
Specific embodiment
It elaborates below to the embodiment of the present invention, the present embodiment is carried out lower based on the technical solution of the present invention
Implement, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following implementation
Example.
Embodiment 1
A kind of subway train air conditioning unit with air draft subcooler, structure and flow are as shown in Figure 1, the air-conditioner set packet
Include refrigerant circuit and air loop.
Refrigerant circuit includes the compressor 1, condenser 2, subcooler 3, throttling set 4 and the evaporator that recycle connection successively
5, wherein, condenser 2, subcooler 3 and evaporator 5 include coolant channel and air duct, in refrigerant circuit, condenser
What the 2nd, subcooler 3 and evaporator 5 connected is all coolant channel, and detailed process is as follows：It is come out from 5 coolant channel of evaporator low
Warm low pressure refrigerant vapor enters compressor 1 through connecting refrigerant lines 18, becomes the system of high temperature and pressure under the action of compressor 1
Refrigerant vapour；Enter the coolant channel of condenser 2 through connecting refrigerant lines 14, exothermic condensation becomes the refrigerant liquid of high temperature and pressure
Body；Enter the coolant channel of subcooler 3 through connecting refrigerant lines 15 again, further cooled down by compartment air draft, become subcooled liquid,
Enter throttling set 4 through connecting refrigerant lines 16；Enter the coolant channel of evaporator 5 by refrigeration machine connecting tube 17 again, through inhaling
Thermal evaporation becomes the refrigerant vapour of low-temp low-pressure, returns to compressor through connecting refrigerant lines 18, completes refrigeration cycle.
Air loop includes evaporator air access and subcooler air flue.
Wherein, air in compartment 6 is sucked subcooler 3 by subcooler air loop by No.1 exhaust outlet 24 and air hose 36
Air duct, and using the refrigerant in 3 coolant channel of air cooling subcooler, and pass sequentially through air hose 37, exhaust fan 8
With air hose 38 by air through No. two 14 row's vehicle compartments of exhaust outlet outside.
Evaporator air circuit is sucked the air in compartment 6 by return air inlet 21 and air hose 31, passes through 22 He of fresh wind port
Air hose 32 enters compartment outer space aspiration, enters the air duct of evaporator 5 after two bursts of air mixing by air hose 33, utilizes evaporation
After cold in 5 coolant channel of device is cooled down, air hose 34, breeze fan 7 and air hose 35 are passed sequentially through, and send through air outlet 23
It is back in compartment 6.Filter is equipped with before evaporator 5, to improve the air quality of compartment air-supply.
In addition, compartment outer space aspiration is entered the sky of condenser 2 by inlet scoop 26 and air hose 39 by the air flue of condenser
Gas channel, and using the refrigerant in 2 coolant channel of air-cooled condenser, and pass sequentially through air hose 40,9 and of condensation fan
Air hose 41 discharges air outside compartment via air outlet 27.
Simulation result shows after adding subcooler that the refrigeration performance system of Train air conditioning unit is promoted to 2.4 from 2.2, carries
It is high by 9%.
Not completely displaying refrigerant circulation and all components in air duct in above-described embodiment, in implementation process, in refrigerant
The common refrigeration auxiliaries such as circuit setting high-pressure reservoir, gas-liquid separator, oil eliminator, filter, drier, are set in air duct
The air-treatments attachment such as filter, silencer, humidifier, heater, sterilizing unit selects different air outlet and air return grille
Grid change wind turbine position or do not depart from the spirit increase heat exchanger of technical solution of the present invention, and wind turbine and air-valve etc. cannot
It is considered as and substantial improvements has been carried out to the present invention, the scope of the present invention should be belonged to.
The words such as " No.1 " used herein, " No. two " limit component, and those skilled in the art should know：" one
Number ", the use of the words such as " No. two " be intended merely to facilitate description, above-mentioned component is distinguished.Outside such as without Stated otherwise,
Above-mentioned word has no special meaning.
Finally it should be noted that:The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, institute
The those of ordinary skill in category field can still modify or to some technical characteristics to the specific embodiment of the present invention
Equivalent replacement is carried out, but as long as not departing from the spirit of technical solution of the present invention, should all be covered in the claimed skill of the present invention
In art aspects.
Claims (4)
1. a kind of subway train air conditioning unit with air draft subcooler, which includes refrigerant circuit and air loop；
Filling refrigerant in the refrigerant circuit, including compressor, condenser, throttling set and evaporator, which is characterized in that institute
The refrigerant circuit stated further includes subcooler, wherein, compressor, condenser, subcooler, throttling set and evaporator recycle successively
Connection；The air loop includes evaporator air access and subcooler air flue；
The evaporator air access includes sequentially connected evaporator and breeze fan, using new outside refrigerant coolant compartment
The mixed gas of wind and return air in train, and pass through breeze fan and return to mixed gas in compartment；
The subcooler air flue includes sequentially connected subcooler and exhaust fan, is cooled down and freezed using air in a car compartment
Refrigerant liquid in agent circuit；
The condenser includes condenser coolant channel and condenser air passage, and the condenser coolant channel is refrigeration
The part in agent circuit, entrance and the air communication outside compartment of the condenser air passage, condenser air passage go out
Mouth utilizes the refrigerant in air cooling refrigerant circuit outside compartment by air communication outside condensation fan and compartment；
The subcooler includes subcooler coolant channel and subcooler air duct, and the subcooler coolant channel is refrigeration
The part in agent circuit, the entrance of the subcooler air duct are connected by exhaust outlet with air in a car compartment, and subcooler is empty
The outlet of gas channel passes through air communication outside exhaust fan and compartment.
2. a kind of subway train air conditioning unit with air draft subcooler according to claim 1, which is characterized in that described
Throttling set includes capillary, short tube, electric expansion valve, heating power expansion valve or orifice plate.
3. a kind of subway train air conditioning unit with air draft subcooler according to claim 1, which is characterized in that described
Evaporator includes evaporator coolant channel and evaporator air passage, and the evaporator coolant channel is the one of refrigerant circuit
Part, the evaporator air passage are a part for air loop, and evaporator air passage entrance passes through gas mixer
It is connected with air outside compartment and air in a car compartment, evaporator air passage outlet is connected by breeze fan with air in a car compartment.
4. a kind of subway train air conditioning unit with air draft subcooler according to claim 3, which is characterized in that described
Filter is set between gas mixer and evaporator air passage entrance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610086758.0A CN105716334B (en) | 2016-02-16 | 2016-02-16 | A kind of subway train air conditioning unit with air draft subcooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610086758.0A CN105716334B (en) | 2016-02-16 | 2016-02-16 | A kind of subway train air conditioning unit with air draft subcooler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105716334A CN105716334A (en) | 2016-06-29 |
| CN105716334B true CN105716334B (en) | 2018-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610086758.0A Expired - Fee Related CN105716334B (en) | 2016-02-16 | 2016-02-16 | A kind of subway train air conditioning unit with air draft subcooler |
Country Status (1)
| Country | Link |
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| CN (1) | CN105716334B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106440431B (en) * | 2016-09-13 | 2019-08-20 | 克莱门特捷联制冷设备(上海)有限公司 | The refrigeration system of cooling unit |
| CN108253554B (en) * | 2017-12-15 | 2019-10-01 | 同济大学 | It is a kind of to be subcooled using return air plus mix the air-cooled new blower of solidifying heat pump heat reclamation type |
| CN108507231B (en) * | 2018-04-27 | 2023-12-29 | 浙江普林艾尔电器工业有限公司 | Multistage heating multistage condenser condensate deep supercooling heat pump system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2009120179A (en) * | 2007-10-26 | 2009-06-04 | Taiyo Kogyo Corp | Temperature controller for use on vehicle |
| CN104121724A (en) * | 2013-04-27 | 2014-10-29 | 杭州三花研究院有限公司 | Air conditioning system and heat exchanger |
| CN104180556A (en) * | 2013-05-22 | 2014-12-03 | 杭州三花研究院有限公司 | Heat-pump air conditioning system |
| CN104290561A (en) * | 2014-09-11 | 2015-01-21 | 中国科学院理化技术研究所 | Method for recycling exhaust air heat of electric automobile and heat pump air-conditioning system adopting same |
| CN105276736A (en) * | 2015-11-25 | 2016-01-27 | 南通华信中央空调有限公司 | Heat pump type total heat recovery new-air air conditioning unit with condensation reheating function |
-
2016
- 2016-02-16 CN CN201610086758.0A patent/CN105716334B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009120179A (en) * | 2007-10-26 | 2009-06-04 | Taiyo Kogyo Corp | Temperature controller for use on vehicle |
| CN104121724A (en) * | 2013-04-27 | 2014-10-29 | 杭州三花研究院有限公司 | Air conditioning system and heat exchanger |
| CN104180556A (en) * | 2013-05-22 | 2014-12-03 | 杭州三花研究院有限公司 | Heat-pump air conditioning system |
| CN104290561A (en) * | 2014-09-11 | 2015-01-21 | 中国科学院理化技术研究所 | Method for recycling exhaust air heat of electric automobile and heat pump air-conditioning system adopting same |
| CN105276736A (en) * | 2015-11-25 | 2016-01-27 | 南通华信中央空调有限公司 | Heat pump type total heat recovery new-air air conditioning unit with condensation reheating function |
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| CN105716334A (en) | 2016-06-29 |
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Granted publication date: 20180626 Termination date: 20210216 |