CN105716334A - Subway train air conditioning unit with exhaust air subcooler - Google Patents
Subway train air conditioning unit with exhaust air subcooler Download PDFInfo
- Publication number
- CN105716334A CN105716334A CN201610086758.0A CN201610086758A CN105716334A CN 105716334 A CN105716334 A CN 105716334A CN 201610086758 A CN201610086758 A CN 201610086758A CN 105716334 A CN105716334 A CN 105716334A
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- China
- Prior art keywords
- air
- subcooler
- conditioning unit
- condenser
- loop
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- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention relates to a subway train air conditioning unit with an exhaust air subcooler. The subway train air conditioning unit comprises a refrigerating fluid loop and an air loop; the refrigerating fluid loop is filled with refrigerating fluid and comprises a compressor, a condenser, a throttling device, an evaporator and the subcooler, wherein the compressor, the condenser, the subcooler, the throttling device and the evaporator are sequentially connected in a circulated mode; the air loop comprises an evaporator air loop, a subcooler air loop and a condenser air loop. Compared with the prior art, the subway train air conditioning unit has the advantages that exhaust air of carriages is used for cooling, and additional energy is not consumed; the subcooler is arranged, and therefore the refrigerating efficiency of the air conditioning unit is improved; simulation results show that the refrigeration performance is systematically improved by 9% after the subcooler is arranged.
Description
Technical field
The present invention relates to subway train air conditioning unit, be specifically related to a kind of subway train air conditioning unit with air draft subcooler.
Background technology
Subway train air conditioning mostly is single cooling system.In existing subway train air conditioning unit, in compartment, air draft directly drains into outdoor environment through exhaust fan, air channel, there is huge cold waste.Additionally, the size of subway train air conditioning unit is severely limited, the heat transfer effect of heat exchanger is poor, and the refrigerating efficiency of unit is low.
Summary of the invention
Defect that the purpose of the present invention is contemplated to overcome above-mentioned prior art to exist and the subway train air conditioning unit with air draft subcooler that a kind of energy consumption is low, refrigerating efficiency is good is provided.
The purpose of the present invention can be achieved through the following technical solutions: a kind of subway train air conditioning unit with air draft subcooler, and this is air conditioning unit includes refrigerant loop and air loop；Being provided with cold-producing medium in described refrigerant loop, including compressor, condenser, throttling arrangement and vaporizer, described refrigerant loop also includes subcooler, and wherein, compressor, condenser, subcooler, throttling arrangement and vaporizer circulate connection successively；Described air loop includes evaporator air path and subcooler air flue；
Described evaporator air loop includes the vaporizer and the breeze fan that are sequentially connected with, utilizes new wind and the mixing gas of return air in train outside cold-producing medium coolant compartment, and is returned in compartment by mixing gas by breeze fan；
Described subcooler air loop includes the subcooler and the exhaust fan that are sequentially connected with, utilizes the cold-producing medium in air in a car compartment cooling refrigerant loop.
Refrigerant loop is set up cold-producing medium subcooler, with cryogenic gas cooling cold-producing medium in compartment, condensation temperature can be reduced on the one hand, improve operational reliability and the safety of unit；On the other hand, can increasing the refrigerating capacity of refrigeration unit unit mass flow, the refrigerating capacity producing formed objects can reduce compressor frequency, hence it is evident that improves unit efficiency.
Described condenser includes condenser coolant channel and condenser air passage, the described part that condenser coolant channel is refrigerant loop, the entrance of described condenser air passage connects with compartment outer air, the outlet of condenser air passage is connected with compartment outer air by condensation fan, utilize the cold-producing medium in compartment outer air cooling refrigerant loop, utilize the cold-producing medium in compartment outer air cooling refrigerant loop.
Described subcooler includes subcooler coolant channel and subcooler air duct, the described part that subcooler coolant channel is refrigerant loop, the entrance of described cooler air duct is connected with air in a car compartment by an exhaust outlet, the outlet of cooler air duct is connected with compartment outer air by exhaust fan, utilizes the cold air in compartment again to cool down the cold-producing medium in refrigerant loop.
Described throttling arrangement includes capillary tube, short tube, electric expansion valve, heating power expansion valve or orifice plate.
Described vaporizer includes vaporizer coolant channel and evaporator air passage, the described part that vaporizer coolant channel is refrigerant loop, described evaporator air passage is a part for air loop, evaporator air passage entrance is connected with compartment outer air and air in a car compartment by gas mixer, evaporator air passage outlet is connected with air in a car compartment by breeze fan, utilizes the cold-producing medium cooling mixing air in refrigerant loop.
Between described gas mixer and evaporator air passage entrance, filter is set, to improve the air quality of compartment air-supply.
In refrigerant loop, 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, entrance subcooler is further cooled, supercool refrigerant liquid enters vaporizer through throttling arrangement, and in vaporizer, heat absorption evaporation becomes the refrigerant vapour of low-temp low-pressure, completes kind of refrigeration cycle.
In air loop, outdoor new wind enters airduct through fresh wind port and mixes with the return air in compartment, and mixed air first enters vaporizer through airduct, by cool-down dehumidification in vaporizer, by breeze fan effect, sends into compartment.
The principle of operational reliability and refrigerating efficiency that the present invention can improve subway train air conditioning unit is in that: set up a cold-producing medium subcooler; be equivalent to increase the heat exchange area of condenser; the heat transfer effect of condenser strengthens; thus reducing condensation temperature; avoid high voltage protective, be conducive to improving unit operation reliability and safety；Additionally, the temperature of compartment air draft is significantly lower than outdoor air, using compartment air draft to enter subcooler heat exchange, cooling effect is better, can be effectively increased system degree of supercooling, increases the refrigerating capacity of unit refrigerant flow, thus improving the refrigerating efficiency of Train air conditioning unit.
Compared with prior art, beneficial effects of the present invention is embodied in following several respects:
(1) use compartment air draft to cool down, do not consume the extra energy；
(2) wind output channel is integrated in whole or in part air conditioning unit in, and set up a cold-producing medium subcooler, the cold that subcooler reclaims adds system degree of supercooling, adds specific refrigerating effect, reduce system refrigerant stream, reduce condensing pressure, decrease compressor capacity, improve unit eer, simulation result shows, after setting up subcooler, the refrigeration performance system of Train air conditioning unit is promoted to 2.4 from 2.2, improves 9%.
Accompanying drawing explanation
Fig. 1 is the connection diagram of the present invention.
Wherein, 1 is compressor, and 2 is condenser, and 3 is subcooler, 4 is throttling arrangement, and 5 is vaporizer, and 6 is compartment, 7 is breeze fan, and 8 is exhaust fan, and 9 is condensation fan, 10～18 is connecting refrigerant lines, and 21 is return air inlet, and 22 is fresh wind port, 23 is air outlet, and 24 is an exhaust outlet, and 25 is No. two exhaust outlets, 26 is inlet scoop, and 27 is air outlet, and 31～41 is airduct.
Detailed description of the invention
Below embodiments of the invention being elaborated, the present embodiment is carried out under premised on technical solution of the present invention, gives detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
A kind of subway train air conditioning unit with air draft subcooler, its structure and flow process are as it is shown in figure 1, this air conditioning unit includes refrigerant loop and air loop.
Refrigerant loop includes circulating the compressor 1 of connection, condenser 2, subcooler 3, throttling arrangement 4 and vaporizer 5 successively, wherein, condenser 2, subcooler 3 and vaporizer 5 all include coolant channel and air duct, in refrigerant loop, what condenser 2, subcooler 3 and vaporizer 5 connected is all coolant channel, its detailed process is as follows: enters compressor 1 from vaporizer 5 coolant channel low-temperature low-pressure refrigerant steam out through connecting refrigerant lines 18, becomes the refrigerant vapour of High Temperature High Pressure under the effect of compressor 1；Enter the coolant channel of condenser 2 through connecting refrigerant lines 14, exothermic condensation becomes the refrigerant liquid of High Temperature High Pressure；Enter the coolant channel of subcooler 3 then through connecting refrigerant lines 15, cooled down further by compartment air draft, become subcooled liquid, enter throttling arrangement 4 through connecting refrigerant lines 16；Enter the coolant channel of vaporizer 5 again through refrigeration machine connecting tube 17, become the refrigerant vapour of low-temp low-pressure through heat absorption evaporation, return to compressor through connecting refrigerant lines 18, complete kind of refrigeration cycle.
Air loop includes evaporator air path and subcooler air flue.
Wherein, air in compartment 6 is sucked the air duct of subcooler 3 by an exhaust outlet 24 and airduct 36 by subcooler air loop, and utilize the cold-producing medium in this air cooled cooler 3 coolant channel, and pass sequentially through airduct 37, exhaust fan 8 and airduct 38 air is arranged outside car compartment through No. two exhaust outlets 14.
Air in compartment 6 is sucked by evaporator air loop by return air inlet 21 and airduct 31, by fresh wind port 22 and airduct 32, compartment outer air is sucked, entered the air duct of vaporizer 5 by airduct 33 after two bursts of air mixing, after utilizing the cold in vaporizer 5 coolant channel to cool down, pass sequentially through airduct 34, breeze fan 7 and airduct 35, and return in compartment 6 through air outlet 23.It was provided with filter, to improve the air quality of compartment air-supply before vaporizer 5.
Additionally, compartment outer air is sucked the air duct of condenser 2 by inlet scoop 26 and airduct 39 by the air flue of condenser, and utilize the cold-producing medium in this air-cooled condenser 2 coolant channel, and pass sequentially through airduct 40, condensation fan 9 and airduct 41, via air outlet 27, air is discharged outside compartment.
Simulation result shows, after setting up subcooler, the refrigeration performance system of Train air conditioning unit is promoted to 2.4 from 2.2, improves 9%.
Above-described embodiment is not completely shown all parts in refrigerant cycle and air channel, in implementation process, at refrigerant loop, high-pressure reservoir is set, gas-liquid separator, oil eliminator, filter, the common refrigeration auxiliary such as exsiccator, in air channel, filter is set, acoustic filter, humidifier, heater, the air-treatment adnexaes such as sterilizing unit, select different air outlets and return air grid, change blower fan position, or the spirit without departing from technical solution of the present invention increases heat exchanger, blower fan and air-valve etc., all can not be considered as the present invention has been carried out substantial improvements, scope should be belonged to.
The word such as " No. one " used herein, " No. two " carrys out limiting part, and those skilled in the art should know: the use of the word such as " No. ", " No. two " is intended merely to facilitate description, and above-mentioned parts are distinguished.As not having outside Stated otherwise, above-mentioned word does not have special implication.
Finally should be noted that: above example is only in order to illustrate that technical scheme is not intended to limit; the specific embodiment of the present invention still can be modified or portion of techniques feature carries out equivalent replacement by those of ordinary skill in the field; but as long as without departing from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention is claimed.
Claims (6)
1. the subway train air conditioning unit with air draft subcooler, this is air conditioning unit includes refrigerant loop and air loop；Charging refrigerant in described refrigerant loop, including compressor, condenser, throttling arrangement and vaporizer, it is characterised in that described refrigerant loop also includes subcooler, wherein, compressor, condenser, subcooler, throttling arrangement and vaporizer circulate connection successively；Described air loop includes evaporator air path and subcooler air flue；
Described evaporator air path includes the vaporizer and the breeze fan that are sequentially connected with, utilizes new wind and the mixing gas of return air in train outside cold-producing medium coolant compartment, and is returned in compartment by mixing gas by breeze fan；
Described subcooler air flue includes the subcooler and the exhaust fan that are sequentially connected with, utilizes the refrigerant liquid in air in a car compartment cooling refrigerant loop.
2. a kind of subway train air conditioning unit with air draft subcooler according to claim 1, it is characterized in that, described condenser includes condenser coolant channel and condenser air passage, the described part that condenser coolant channel is refrigerant loop, the entrance of described condenser air passage connects with compartment outer air, the outlet of condenser air passage is connected with compartment outer air by condensation fan, utilizes the cold-producing medium in compartment outer air cooling refrigerant loop.
3. a kind of subway train air conditioning unit with air draft subcooler according to claim 1, it is characterized in that, described subcooler includes subcooler coolant channel and subcooler air duct, the described part that subcooler coolant channel is refrigerant loop, the entrance of described subcooler air duct is connected with air in a car compartment by exhaust outlet, and the outlet of subcooler air duct is connected with compartment outer air by exhaust fan.
4. a kind of subway train air conditioning unit with air draft subcooler according to claim 1, it is characterised in that described throttling arrangement includes capillary tube, short tube, electric expansion valve, heating power expansion valve or orifice plate.
5. a kind of subway train air conditioning unit with air draft subcooler according to claim 1, it is characterized in that, described vaporizer includes vaporizer coolant channel and evaporator air passage, the described part that vaporizer coolant channel is refrigerant loop, described evaporator air passage is a part for air loop, evaporator air passage entrance is connected with compartment outer air and air in a car compartment by gas mixer, and evaporator air passage outlet is connected with air in a car compartment by breeze fan.
6. a kind of subway train air conditioning unit with air draft subcooler according to claim 5, it is characterised in that between described gas mixer and evaporator air passage entrance, filter is set.
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 true CN105716334A (en) | 2016-06-29 |
| CN105716334B CN105716334B (en) | 2018-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| 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 |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106440431A (en) * | 2016-09-13 | 2017-02-22 | 克莱门特捷联制冷设备(上海)有限公司 | Refrigerating system of cooling unit |
| CN108253554A (en) * | 2017-12-15 | 2018-07-06 | 同济大学 | It is a kind of to be subcooled plus mix the air-cooled new wind turbine of solidifying heat pump heat reclamation type using return air |
| CN108507231A (en) * | 2018-04-27 | 2018-09-07 | 上海伯涵热能科技有限公司 | A kind of heat pump system of the multi-stage condensing device condensate liquid deeply undercooling of Multi-stage heating |
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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 |
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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 |
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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 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106440431A (en) * | 2016-09-13 | 2017-02-22 | 克莱门特捷联制冷设备(上海)有限公司 | Refrigerating system of cooling unit |
| 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 |
| CN108253554A (en) * | 2017-12-15 | 2018-07-06 | 同济大学 | It is a kind of to be subcooled plus mix the air-cooled new wind turbine of solidifying heat pump heat reclamation type using return air |
| CN108507231A (en) * | 2018-04-27 | 2018-09-07 | 上海伯涵热能科技有限公司 | A kind of heat pump system of the multi-stage condensing device condensate liquid deeply undercooling of Multi-stage heating |
| 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 |
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| Publication number | Publication date |
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| CN105716334B (en) | 2018-06-26 |
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Granted publication date: 20180626 Termination date: 20210216 |