CN116476882A - High energy efficiency ratio air conditioning unit for railway vehicle - Google Patents
High energy efficiency ratio air conditioning unit for railway vehicle Download PDFInfo
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- CN116476882A CN116476882A CN202310625433.5A CN202310625433A CN116476882A CN 116476882 A CN116476882 A CN 116476882A CN 202310625433 A CN202310625433 A CN 202310625433A CN 116476882 A CN116476882 A CN 116476882A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 67
- 238000001704 evaporation Methods 0.000 claims abstract description 17
- 230000008020 evaporation Effects 0.000 claims abstract description 14
- 238000009833 condensation Methods 0.000 claims abstract description 11
- 230000005494 condensation Effects 0.000 claims abstract description 11
- 238000005192 partition Methods 0.000 claims description 43
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000011161 development Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000003507 refrigerant Substances 0.000 description 16
- 238000005057 refrigeration Methods 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000007788 liquid Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 241000700605 Viruses Species 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D27/00—Heating, cooling, ventilating, or air-conditioning
- B61D27/0018—Air-conditioning means, i.e. combining at least two of the following ways of treating or supplying air, namely heating, cooling or ventilating
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention discloses a high energy efficiency ratio air conditioning unit for a railway vehicle, which comprises a machine box with a condensation cavity and an evaporation cavity, wherein an evaporator and a blower are arranged in the evaporation cavity, and the key point is that: a condensing fan and a matched compressor are arranged in the middle of the width direction of the condensing cavity and in parallel along the length direction of the chassis, L-shaped condensers are respectively arranged at two sides of the condensing fan, and the two condensers are respectively in a 'gamma' -shape and are arranged at two sides of the condensing fan; and the top and the side surfaces of the case are provided with air inlet holes matched with the condenser. The beneficial effects of the invention are as follows: the large-size evaporator and condenser are adopted to improve the evaporation temperature and reduce the condensation temperature, so that the purposes of increasing the refrigerating capacity and reducing the power consumption of the compressor are achieved, the development of the L-shaped condenser not only improves the heat exchange area of the condenser, but also reduces the wind resistance and improves the condensation air quantity.
Description
Technical Field
The invention belongs to the technical field of rail vehicle air conditioning systems, and particularly relates to a rail vehicle air conditioning unit with high energy efficiency ratio.
Background
The air conditioning unit of the railway vehicle is a consumer with high power consumption in the running process of the train, and along with the global requirement on energy conservation and environmental protection, the improvement of the efficiency of the air conditioning unit to reduce the energy consumption is a current development trend.
Most of the urban rail air conditioning units in China have 35kW and 45kW refrigerating capacity under the working conditions of the external temperature of 35 ℃, the internal temperature of 29 ℃ and the relative humidity of 60 percent. The iron marks 1804-2017 also define corresponding requirements for the refrigeration energy efficiency ratio under the working conditions: the height of the passenger room air conditioner is more than 300mm and less than or equal to 500mm, and the highest refrigerating energy efficiency ratio (COP) is more than or equal to 2.5.
Indian personnel are numerous, and therefore, development of an air conditioning unit with large refrigerating capacity is required. In the India market, COP requirements of more than 2.5 are standard requirements under the working conditions of 44 ℃ outside temperature, 33% relative humidity, 25 ℃ in the vehicle and 60% relative humidity, the test working conditions are far higher than the iron standard requirements in China, and the vehicle inside temperature is lower than the iron standard requirements in China, so that the method is also a technical challenge.
Disclosure of Invention
The invention aims to solve the technical problem of providing the air conditioning unit with high energy efficiency ratio for the railway vehicle, and the L-shaped condenser is designed to increase the area of the condenser by about 30 percent so as to increase the refrigerating capacity and reduce the power consumption of the compressor, thereby meeting the COP requirement.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a high energy efficiency is than rail vehicle air conditioning unit, includes the quick-witted case that has condensation chamber and evaporating chamber is equipped with evaporimeter and forced draught blower in the chamber, the key lies in: a condensing fan and a matched compressor are arranged in the middle of the width direction of the condensing cavity and along the length direction of the chassis, L-shaped condensers are respectively arranged at two sides of the condensing fan, and the two condensers are respectively in a 'shape' and are respectively arranged at two sides of the condensing fan and are matched with the chassis to form an air inlet channel of the condensing fan; and the top and the side surfaces of the case are provided with air inlet holes matched with the condenser.
Further, the compressors are arranged on one side of the condensing fan side by side along the width direction of the condensing cavity.
Further, two groups of condensing fans and matched compressors are arranged side by side or symmetrically along the length direction of the case, and each condensing fan is matched with two condensers.
Further, the evaporation cavity comprises an air conditioning cavity and an air supply cavity, the air supply cavity is located between the air conditioning cavity and the condensation cavity, the evaporator is located in the air conditioning cavity, and the air feeder is located in the air supply cavity.
Further, an air mixing cavity is arranged in the middle of the air conditioning cavity, and a fresh air cavity communicated with the air mixing cavity and a temperature conditioning cavity respectively communicated with the air mixing cavity and the air supply cavity are arranged on both sides of the air mixing cavity; the evaporator is positioned in the temperature regulating cavity; an air return valve is arranged in the air mixing cavity; and a fresh air port is arranged on the side surface of the case, and a fresh air valve is arranged in the fresh air cavity.
Further, a first partition plate used for separating and forming an air conditioning cavity and an air supply cavity, two second partition plates which are positioned in the middle of the air conditioning cavity and are arranged in parallel along the length direction of the case to form an air mixing cavity, a third partition plate which is obliquely arranged in a space formed by the second partition plate and the case and is used for separating the space into a fresh air cavity and a temperature adjusting cavity, and a fourth partition plate used for communicating the two fresh air cavities are arranged in the evaporation cavity, and two ends of the fourth partition plate are respectively connected with the inner ends of the two third partition plates; the first partition board is provided with an air passing hole communicated with the temperature adjusting cavity and the air supplying cavity, the second partition board is provided with a vent hole communicated with the air mixing cavity and the temperature adjusting cavity, and the fourth partition board is provided with a fresh air hole communicated with the fresh air cavity and the air mixing cavity.
Further, an evaporator and a heater are sequentially arranged on the outer side of the second partition plate.
Further, a pipe connecting the condenser and the evaporator passes through the air supply chamber and the air passing hole in the first partition plate.
Further, an air conditioner control panel is arranged in the air mixing cavity.
The beneficial effects of the invention are as follows: a. the large-size evaporator and condenser are adopted to improve the evaporation temperature and reduce the condensation temperature, so that the purposes of increasing the refrigerating capacity and reducing the power consumption of the compressor are achieved, the development of the L-shaped condenser not only improves the heat exchange area of the condenser, but also reduces the wind resistance and improves the condensation air quantity. b. And an EC blower is adopted to improve the self efficiency of the blower, reduce heat loss and reduce power consumption. c. The refrigerant loop passes through the air supply cavity to exchange heat between high-temperature refrigerant liquid and low-temperature refrigerant, so that the liquid refrigerant entering the expansion valve is further supercooled, the operation stability of the expansion valve is improved, the enthalpy value of the refrigerant entering the evaporator is reduced, and the refrigerating capacity of the air conditioning unit is effectively improved. d. The air inlet of the blower is provided with the flow guide grating, so that the uniformity of the air inlet of the blower is improved to reduce the air inlet speed, and the air supply noise is reduced.
The present invention will be described in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural view of an air conditioning unit for a railway vehicle with a high energy efficiency ratio according to the present invention.
FIG. 2 is a schematic view of the structure of a condenser in the air conditioning unit of the railway vehicle according to the present invention;
FIG. 3 is a control flow diagram of the energy efficient ratio rail vehicle air conditioning unit of the present invention in an epidemic mode of operation.
In the attached drawings, 1, a machine case, 1-1, a fresh air port, 1-2, an air supply cavity, 1-3, an air mixing cavity, 1-4, a fresh air cavity, 1-5, a temperature adjusting cavity, 2, an evaporator, 3, a blower, 4, a heater, 5, a fresh air valve, 6, a condenser, 7, a condensing fan, 8, a compressor, 9, a return air valve, 10, a partition plate, 11, a first partition plate, 12, a second partition plate, 13, a third partition plate, 14, a fourth partition plate, 15, an air conditioner control panel, 16 and a flow guide grid.
Detailed Description
Referring to fig. 1 and 2, the present invention provides an energy efficient ratio rail vehicle air conditioning unit comprising a cabinet 1 having a condensing chamber and an evaporating chamber. An evaporator 2 and a blower 3 are arranged in the evaporation cavity. A condenser 6, a condensing fan 7 and a compressor 8 are arranged in the condensing cavity. The key point of the invention is that: the condensing fan 7 and the matched compressor 8 are positioned in the middle of the width direction of the condensing cavity and are arranged side by side along the length direction of the case 1, the two sides of the condensing fan 7 are respectively provided with the L-shaped condensers 6, the two condensers 6 are respectively in a 'shape' and are respectively arranged at the two sides of the condensing fan 7 and are matched with the bottom of the case 1 and air inlet holes (not shown in the figure) which are arranged at the top and the side of the case 1 and are matched with the condensers 6 to form an air inlet channel of the condensing fan 7. The compressors 8 are located at one side of the condensing fan 7 and are arranged 2 side by side in the width direction of the condensing chamber.
Under the condition that the compressor 8 is determined, the condensation temperature of the refrigerating system can be reduced by increasing the heat exchange area of the condenser 6, and the power consumption of the compressor 8 is reduced while the refrigerating capacity of the air conditioning unit is improved, so that the purpose of improving COP is achieved. By increasing the heat exchange area of the condenser 6, the wind resistance becomes small by reducing the wind speed of the condensing fan 7 under the same wind quantity, and the power consumption of the condensing fan 7 can be reduced, thereby improving the COP. The L-shaped condensers are symmetrically arranged on the left side and the right side of the condensing fan 7, can intake air from the top and the side of the air conditioner, can avoid the influence on air flow when a vehicle advances, and reduces wind resistance.
Because two sets of refrigerant loops (each refrigerant loop is matched with 2 compressors) are arranged in the air conditioning unit, two sets of condensing fans 7 and matched compressors 8 are arranged side by side or symmetrically along the length direction of the machine case 1, each condensing fan 7 is matched with two condensers 6, and two evaporators 2 are arranged in the evaporating cavity. Two condensers 6 located on the same side of the condensing fan 7 are arranged in series and connected with the corresponding evaporators 2 through pipelines.
The evaporation cavity comprises an air conditioning cavity and an air supply cavity 1-2, and the air supply cavity 1-2 is positioned between the air conditioning cavity and the condensation cavity. Specifically, an air mixing cavity 1-3 is arranged in the middle of the air conditioning cavity, and a fresh air cavity 1-4 communicated with the air mixing cavity 1-3 and a temperature conditioning cavity 1-5 respectively communicated with the air mixing cavity 1-3 and the air supply cavity 1-2 are arranged on both sides of the air mixing cavity 1-3. Each refrigerant loop is matched with a fresh air cavity 1-4, a temperature adjusting cavity 1-5 and an air supply cavity 1-2 respectively, but shares an air mixing cavity 1-3 so as to achieve the purpose of saving space. The blower 3 is located in the blower chamber 1-2 and is provided with two side by side along the middle of the width direction of the cabinet 1 so as to correspond to the two temperature adjusting chambers 1-5. A partition plate 10 is provided between the two blowers 3 to achieve separation, ensuring the independence of each refrigerant circuit. A blowing hole corresponding to each blower 3 is provided in the blowing chamber 1-2. A guide grille 16 is arranged at the air inlet of each blower 3 to improve the uniformity of the air inlet of the blower so as to reduce the air inlet speed and the air supply noise.
The blower 3 is preferably an EC blower, the EC blower is provided with an analog input module, and the DC 0-10V blower is input through a controller, so that stepless speed regulation can be realized. The EC fan has a state feedback module, and when the fan fails or is blocked, a feedback signal is sent to the controller for protection, and meanwhile, a fan monitoring component can be replaced for protecting a heating function, and electric heating cannot be started when no air supply airflow is supplied. The EC fan is provided with a DC 10V output module, and if the controller fails, the power supply can be connected to the input module of the EC fan to ensure the normal operation of the fan.
One evaporator 2 is provided in each of the temperature-regulating chambers 1 to 5. An air return valve 9 is arranged in the air mixing cavity 1-3. The opening of the air return valve 9 can be adjusted by adjusting the input voltage (2V-10V), 4-gear fresh air quantity is defined in the embodiment, and the air return valve 9 is correspondingly controlled by 4 gears according to different fresh air quantities. A fresh air port 1-1 is arranged on the side face of the case 1, and a fresh air valve 5 is arranged in each fresh air cavity 1-4 so as to control fresh air quantity.
In order to realize the separation between the cavities and realize the respective operation of the two refrigerant circuits, a first partition 11 for separating the evaporation cavity to form an air conditioning cavity and an air supply cavity 1-2, two second partitions 12 positioned in the middle of the air conditioning cavity and arranged in parallel along the length direction of the case 1, so that the space between the two forms an air mixing cavity 1-3, a third partition 13 obliquely arranged in the space formed by the second partition 12 and the case 1 and separating the space into a fresh air cavity 1-4 and a temperature adjusting cavity 1-5, and a fourth partition 14 for communicating the two fresh air cavities 1-4 are arranged in the evaporation cavity. Both ends of the fourth partition 14 are located outside the second partition 12 and connected to the inner ends of the two third partitions 13, respectively (the other ends of the third partitions 13 are connected to the cabinet 1), so that the space of the evaporator installation place outside the second partition 12 can be maximized and a larger-sized evaporator 2 can be used. The first partition board 11 is provided with air passing holes for communicating the temperature adjusting cavity 1-5 with the air supplying cavity 1-2, the second partition board 12 is provided with air holes for communicating the air mixing cavity 1-3 with the temperature adjusting cavity 1-5, and the fourth partition board 14 is provided with fresh air holes for communicating the fresh air cavity 1-4 with the air mixing cavity 1-3. The third partition plate 13 is obliquely arranged in the case 1, so that the effect of guiding fresh air and air after temperature regulation can be realized. The pipe connecting the condenser 6 and the evaporator 2 passes through the air supply chamber 1-2 and the air passing hole. The pipeline passing through the air supply cavity 1-2 can be designed into S-shaped or serpentine shapes, and the like, and the high-temperature refrigerant liquid and the low-temperature refrigerant are subjected to heat exchange, so that the liquid refrigerant entering the expansion valve is further supercooled, the operation stability of the expansion valve is improved, the enthalpy value of the refrigerant entering the evaporator 2 is reduced, and the refrigerating capacity of the air conditioning unit is effectively improved.
An evaporator 2 and a heater 4 are sequentially provided on the outer side of the second partition 12 to cool and heat the air temperature, respectively, for the purpose of regulation. An air-conditioning control panel 15 is arranged in the air mixing cavity 1-3 so as to realize the purpose of timely taking out the heat generated by the air-conditioning control panel 15 and ensure the normal operation of the control panel.
The working process of the air conditioning unit is as follows: according to the set temperature in the carriage, the outdoor temperature and the passenger load at the moment, when the required refrigerating capacity is low, only one refrigerant loop is operated; both refrigerant circuits operate when the required refrigeration capacity is high.
In particular, the air conditioning units are operated in such a way that the COP requirement is as close as possible or up to 2.5 at 25%,50%,75% and 100% passenger load, depending on the different passenger loads. In order to meet the technical requirement, the refrigerating capacity of the air conditioner unit is correspondingly reduced when the load is reduced, the energy efficiency ratio can be ensured only by correspondingly reducing the rotating speed of the fan, and the following control is performed under different load conditions:
the blower is an EC blower, so that the blowing amount can be adjusted steplessly and the power consumption is reduced. The condensing fan adopts a 4/6 pole motor, and the high speed is 4 poles, and the low speed is 6 poles. When the refrigerating capacity is 100 percent: the air conditioning unit is operated in a full cooling mode (4 compressors are all operated), the air quantity of two blowers is 100%, and two condensing fans 7 are operated at a high speed; 75% of refrigerating capacity: the air conditioning unit is operated in a full cooling mode (4 compressors are all operated), the air quantity of two blowers is 100%, and two condensing fans 7 are operated at a high speed; the refrigerating capacity is 50 percent: semi-cold running (3 compressors running), 75% air quantity of two blowers and low-speed running of two condensing fans 7; the refrigerating capacity is 25 percent: the air conditioning unit runs totally cold (2 compressors run), two blowers 50% of air quantity, and two condensing fans 7 run at low speed.
Referring to fig. 3, epidemic pattern: due to the influence of viruses, the vehicle air conditioning unit needs to consider that the transmission probability of the viruses in the vehicle is reduced as much as possible, and the current effective method is to increase the fresh air quantity and accelerate the air change rate in the vehicle, so that the epidemic mode is increased, and the maximum fresh air quantity is ensured on the premise of ensuring the temperature control in the vehicle. The control logic of the air conditioning unit is as follows:
the fresh air quantity of the air conditioning unit is as follows: grade P1: fresh air volume 1300m 3 And/h, the fresh air valve 5 is fully opened, and the return air valve 9 is closed for 1 gear; grade P2: fresh air volume 1500m 3 And/h, the fresh air valve 5 is fully opened, and the return air valve 9 is closed for 2 gears; grade P3: fresh air volume 1750m 3 And/h, the fresh air valve 5 is fully opened, and the return air valve 9 is closed for 3 gears; grade P4: fresh air quantity 2000m 3 And/h, the fresh air valve 5 is fully opened, and the return air valve 9 is closed for 4 gears.
When the air conditioning unit operates in epidemic mode:
1. first the P4 class is run, namely: fresh air quantity 2000m 3 And/h, the fresh air valve 5 is fully opened, and the return air valve 9 is closed for 4 gears, so that enough fresh air in the carriage is ensured, and the air change rate is quickened.
2. After 10 minutes of operation, the air conditioning unit is operated in a cooling mode or a ventilation mode of different levels according to the value of Δt. Δt=Tim-Ts, tim is the temperature in the vehicle, and Ts is the set temperature.
If delta t is more than 1.5 ℃, judging whether the current refrigeration level is 100% refrigeration, if not, raising the refrigeration level to 100% refrigeration, and operating the air conditioning unit in different levels of refrigeration modes or ventilation modes according to the delta t after 10 minutes, otherwise, judging whether the return air valve 9 is at the position of closing 1 grade under the P1 grade: if so, keeping the current state unchanged, and operating the air conditioning unit in a refrigerating mode or a ventilating mode of different grades according to the value of Deltat after 10 minutes, if not, closing the return air valve 9 to 1 grade and operating the air conditioning unit in a P2 grade, and operating the air conditioning unit in a refrigerating mode or a ventilating mode of different grades according to the value of Deltat after 10 minutes.
If the temperature delta t is more than or equal to minus 1.5 ℃ and less than or equal to minus 1.5 ℃, the air conditioning unit is maintained in the current operation mode and judged according to the value delta t after 10 minutes.
If Deltat < -1.5 ℃, judging whether the current return air valve 9 is at the position of closing 4 gears under the P4 level, if not, opening the return air valve to 1 gear and operating the P3 level, and operating the air conditioning unit in different levels of refrigeration modes or ventilation modes after 10 minutes according to the value of Deltat, and if so, judging whether the air conditioning unit operates at 0% refrigeration level: if so, keeping the current state unchanged, and operating the air conditioning unit in a refrigerating mode or a ventilating mode of different grades according to the value of Deltat after 10 minutes, otherwise, reducing the refrigerating grade to 1 grade, and operating the air conditioning unit in a refrigerating mode or a ventilating mode of different grades according to the value of Deltat after 10 minutes.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.
Claims (9)
1. The utility model provides a high energy efficiency ratio rail vehicle air conditioning unit, includes quick-witted case (1) that has condensation chamber and evaporation chamber be equipped with evaporimeter (2) and forced draught blower (3), its characterized in that in the evaporation chamber: a condensing fan (7) and a matched compressor (8) are arranged in the middle of the width direction of the condensing cavity and along the length direction of the machine case (1) in parallel,
the two sides of the condensing fan (7) are respectively provided with an L-shaped condenser (6), and the two condensers (6) are respectively in a shape of 'L' and are arranged at the two sides of the condensing fan (7);
and air inlet holes matched with the condenser (6) are formed in the top and the side surfaces of the case (1).
2. The high energy efficiency ratio rail vehicle air conditioning unit of claim 1, wherein: the compressors (8) are located on one side of the condensing fan (7) and are arranged in parallel in the width direction of the condensing cavity.
3. The high energy efficiency ratio rail vehicle air conditioning unit of claim 1, wherein: two groups of condensing fans (7) and matched compressors (8) are arranged side by side or symmetrically along the length direction of the case (1), and each condensing fan (7) is matched with two condensers (6).
4. A high energy efficiency ratio rail vehicle air conditioning unit as set forth in any of claims 1-3, wherein: the evaporation cavity comprises an air conditioning cavity and an air supply cavity (1-2), the air supply cavity (1-2) is located between the air conditioning cavity and the condensation cavity, the evaporator (2) is located in the air conditioning cavity, and the air feeder (3) is located in the air supply cavity (1-2).
5. The high energy efficiency ratio rail vehicle air conditioning unit of claim 4, wherein: an air mixing cavity (1-3) is arranged in the middle of the air conditioning cavity, and a fresh air cavity (1-4) communicated with the air mixing cavity (1-3) and a temperature adjusting cavity (1-5) respectively communicated with the air mixing cavity (1-3) and the air supply cavity (1-2) are arranged on two sides of the air mixing cavity (1-3);
the evaporator (2) is positioned in the temperature regulating cavity (1-5);
an air return valve (9) is arranged in the air mixing cavity (1-3);
a fresh air port (1-1) is arranged on the side face of the case (1), and a fresh air valve (5) is arranged in the fresh air cavity (1-4).
6. The high energy efficiency ratio rail vehicle air conditioning unit of claim 5, wherein: the evaporation cavity is internally provided with a first partition plate (11) for separating and forming an air conditioning cavity and an air supply cavity (1-2), two second partition plates (12) which are positioned in the middle of the air conditioning cavity and are arranged in parallel along the length direction of the case (1) to form an air mixing cavity (1-3), a third partition plate (13) which is obliquely arranged in a space formed by the second partition plates (12) and the case (1) and divides the space into a fresh air cavity (1-4) and a temperature adjusting cavity (1-5), and a fourth partition plate (14) for communicating the two fresh air cavities (1-4), wherein two ends of the fourth partition plate (14) are respectively connected with the inner end parts of the two third partition plates (13);
an air passing hole which is communicated with the temperature adjusting cavity (1-5) and the air supply cavity (1-2) is arranged on the first baffle plate (11),
the second baffle plate (12) is provided with a vent hole which is communicated with the air mixing cavity (1-3) and the temperature adjusting cavity (1-5),
and a fresh air hole communicated with the fresh air cavity (1-4) and the air mixing cavity (1-3) is formed in the fourth partition plate (14).
7. The high energy efficiency ratio rail vehicle air conditioning unit of claim 6, wherein: an evaporator (2) and a heater (4) are sequentially arranged on the outer side of the second partition plate (12).
8. The high energy efficiency ratio rail vehicle air conditioning unit of claim 6, wherein: a pipeline connecting the condenser (6) and the evaporator (2) passes through the air supply cavity (1-2) and the air passing holes on the first partition plate (11).
9. The high energy efficiency ratio rail vehicle air conditioning unit of claim 6, wherein: an air conditioning control panel (15) is arranged in the air mixing cavity (1-3).
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| CN202310625433.5A CN116476882B (en) | 2023-05-30 | 2023-05-30 | High energy efficiency ratio air conditioning unit for railway vehicle |
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| CN202310625433.5A CN116476882B (en) | 2023-05-30 | 2023-05-30 | High energy efficiency ratio air conditioning unit for railway vehicle |
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| KR20000046609A (en) * | 1998-12-31 | 2000-07-25 | 황한규 | Condenser structure of locomotive air conditioner |
| CN202006797U (en) * | 2010-12-20 | 2011-10-12 | 重庆大学 | Fresh air energy saving device for air conditioning passenger train |
| KR20160068284A (en) * | 2014-12-05 | 2016-06-15 | 한온시스템 주식회사 | Air conditioning module, air conditioner for vehicles and controlling method of the same |
| CN104554313A (en) * | 2015-01-12 | 2015-04-29 | 南车青岛四方机车车辆股份有限公司 | Ultra-thin air conditioning unit and urban rail vehicle installed with air conditioning unit |
| CN107042832A (en) * | 2016-11-30 | 2017-08-15 | 中车青岛四方车辆研究所有限公司 | Use the rail vehicle air conditioner group of L-type condenser |
| WO2018133204A1 (en) * | 2017-01-20 | 2018-07-26 | 冯耀忠 | Novel intelligent air disinfection-purification system with energy conservation |
| CN211442307U (en) * | 2019-12-31 | 2020-09-08 | 石家庄国祥运输设备有限公司 | Air conditioning unit for railway vehicle |
| CN111473456A (en) * | 2020-04-14 | 2020-07-31 | 方宇 | Fresh air system and using method |
| CN114537458A (en) * | 2022-02-15 | 2022-05-27 | 南通维忆克技术服务有限公司 | Vehicle air conditioning unit with higher energy efficiency |
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