CN103072449B - Circulation refrigerating system for liquefied natural gas (LNG) vehicle air conditioner - Google Patents
Circulation refrigerating system for liquefied natural gas (LNG) vehicle air conditioner Download PDFInfo
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- CN103072449B CN103072449B CN201310023111.XA CN201310023111A CN103072449B CN 103072449 B CN103072449 B CN 103072449B CN 201310023111 A CN201310023111 A CN 201310023111A CN 103072449 B CN103072449 B CN 103072449B
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Abstract
The invention discloses a circulation refrigerating system for a liquefied natural gas (LNG) vehicle air conditioner. The circulation refrigerating system for the LNG vehicle air conditioner comprises an LNG steel cylinder, a temperature control device, an air conditioning evaporator and an engine, wherein the LNG steel cylinder and the temperature control device are connected through a first pipeline; the temperature control device and the air conditioning evaporator are connected through a second pipeline; the air conditioning evaporator and the engine are connected through a third pipeline; a refrigerating medium coiler is wound on a coiler of the air conditioning evaporator; the first pipeline is provided with an electromagnetic valve and an auxiliary heating device; the auxiliary heating device comprises a cabinet and a heat exchange coiler; an inner cavity of the cabinet is connected with the inlet and the outlet of the refrigerating medium coiler to form a refrigerating medium circulation loop; the circulation loop is provided with a circulation pump; the third pipeline is provided with a regulator; the LNG steel cylinder and the regulator are connected with a fourth pipeline; the fourth pipeline is provided with a vaporizer; the outlet of the temperature control device is provided with an outlet temperature sensor; an in-vehicle temperature sensor is arranged in a vehicle; the electromagnetic valve, the outlet temperature sensor and the in-vehicle temperature sensor are respectively controlled by an electric control device. Energy saving and emission reduction are realized by the refrigerating system.
Description
Technical field
The present invention relates to car air-conditioner field, refer to a kind of LNG car air-conditioner cycle refrigeration system especially.
Background technology
Along with the day by day exhausted of oil resources and the attention to environmental protection, various countries require more and more stricter to the exhaust emission standard of automobile, accelerate the paces of development alternative fuel.Natural fuels with environmental protection, energy-conservation, economic dispatch advantage, one of main alternative energy becoming motor vehicle fuel, especially LNG (liquefied natural gas), with its safety, clean, can high, the advantage such as use cost is low of load factor gradually use by passenger vehicle.China recent years, " the LNG development project such as West-east Gas advanced rapidly, and further promote the development of LNG passenger vehicle, LNG passenger vehicle is universal throughout the country especially to come.
At present, domestic and international orthodox car refrigeration system adopts traditional belt driving band to move compressor mostly, cold is manufactured by compression, condensation, evaporation etc., again cold is realized refrigeration by evaporator evaporation, when process of refrigerastion, the consumption of power of the running meeting consumption of engine of compressor, causes the waste of the energy.And also have the refrigeration utilizing the cold in LNG as air-conditioning at present, but the amount of natural gas consumed due to driving engine is relatively slower, and therefore, the refrigeration of air-conditioning cannot get a desired effect at all.
Summary of the invention
Technical matters to be solved by this invention is: provide a kind of LNG car air-conditioner cycle refrigeration system, this cycle refrigeration system make use of the cold in LNG fully, make A/C evaporator refrigerating capacity large, solve tradition and use the car air-conditioner of compressor cooling or refrigerating equipment cost is high, the problem that wastes energy, achieve the dual purpose reducing manufacturing cost and energy-saving and emission-reduction.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of LNG car air-conditioner cycle refrigeration system, comprise LNG steel cylinder, temperature control apparatus, A/C evaporator and driving engine, connected by the first pipeline between LNG steel cylinder and temperature control apparatus, connected by the second pipeline between temperature control apparatus and A/C evaporator, connected by the 3rd pipeline between A/C evaporator and driving engine, the evaporator coil of A/C evaporator is wound with secondary refrigerant coil pipe, first pipeline is provided with electromagnetic valve and auxiliary heat riser successively along the flow direction of LNG, auxiliary heat riser comprises casing and is arranged at the heat exchanger coil in casing, the arrival end of this heat exchanger coil and exit end are connected on the first pipeline, this casing is provided with the secondary refrigerant entrance be connected with secondary refrigerant filling tube, the inner chamber of casing and the entrance of secondary refrigerant coil pipe, secondary refrigerant circulation line is connected and composed between outlet, this follows secondary refrigerant circulation line and is provided with circulation pump, 3rd pipeline is provided with voltage stabilizer, the 4th pipeline is connected with between LNG steel cylinder and voltage stabilizer, 4th pipeline is provided with carburetter, temperature control apparatus exit is provided with control setup outlet temperature sensor, vehicle interior temperature sensor is installed in car, described electromagnetic valve, control setup outlet temperature sensor, vehicle interior temperature sensor controls by electrical controller.
As the preferred scheme of one, described secondary refrigerant is ethylene glycol.
As the preferred scheme of one, described circulation pump is arranged between casing and secondary refrigerant coil inlet.
As the preferred scheme of one, the flow direction along LNG on described second pipeline is provided with fluid reservoir and flow control valve successively, and this flow control valve is electrically connected with electrical controller.
As the preferred scheme of one, described temperature control apparatus comprises intensification blower fan and intensification coil pipe, and the two ends of intensification coil pipe export with heat exchanger coil respectively, the second pipeline is connected.
As the preferred scheme of one, described A/C evaporator exit is also provided with evaporator outlet temperature sensor, and this evaporator outlet temperature sensor is electrically connected with electrical controller.
After have employed technique scheme, effect of the present invention is: a kind of LNG car air-conditioner cycle refrigeration system, comprise LNG steel cylinder, temperature control apparatus, A/C evaporator and driving engine, connected by the first pipeline between LNG steel cylinder and temperature control apparatus, connected by the second pipeline between temperature control apparatus and A/C evaporator, connected by the 3rd pipeline between A/C evaporator and driving engine, the evaporator coil of A/C evaporator is wound with secondary refrigerant coil pipe, first pipeline is provided with electromagnetic valve and auxiliary heat riser successively along the flow direction of LNG, auxiliary heat riser comprises casing and is arranged at the heat exchanger coil in casing, the arrival end of this heat exchanger coil and exit end are connected on the first pipeline, this casing is provided with the secondary refrigerant entrance be connected with secondary refrigerant filling tube, the inner chamber of casing and the entrance of secondary refrigerant coil pipe, secondary refrigerant circulation line is connected and composed between outlet, this secondary refrigerant circulation line is provided with circulation pump, 3rd pipeline is provided with voltage stabilizer, the 4th pipeline is connected with between LNG steel cylinder and voltage stabilizer, 4th pipeline is provided with carburetter, temperature control apparatus exit is provided with control setup outlet temperature sensor, vehicle interior temperature sensor is installed in car, described electromagnetic valve, control setup outlet temperature sensor, vehicle interior temperature sensor controls by electrical controller.This a kind of LNG car air-conditioner cycle refrigeration system is heated cryogenic liquid by auxiliary heat riser and temperature control apparatus, to meet the demand of A/C evaporator, then A/C evaporator is delivered to, the cold discharged in A/C evaporator LNG intensification gasification is for air conditioner refrigerating, natural gas transport after gasification is to driving engine, if the cold discharged in above-mentioned LNG intensification gasification very little, when being not enough to the demand meeting air conditioner refrigerating, then can open secondary refrigerant circulation line, by A/C evaporator, secondary refrigerant coil pipe is heated, the cold that in secondary refrigerant coil pipe, secondary refrigerant is released can be that air conditioner refrigerating is used, after heating up, secondary refrigerant is entered in casing from secondary refrigerant coil outlets and is heated the cryogenic liquid heat exchanger coil by heat exchanger coil, this refrigeration system reduces manufacturing cost, the consumption of power of driving engine, make full use of the cold in LNG, both pollution-free, realize again the double effects of energy-saving and emission-reduction, and make the refrigerating capacity of A/C evaporator be enough to meet requirements.
Again because the flow direction along LNG on described second pipeline is provided with fluid reservoir and flow control valve successively, this flow control valve is electrically connected with electrical controller, is conducive to for air conditioner refrigerating accurately provides required cold.
Again because described A/C evaporator exit is also provided with evaporator outlet temperature sensor, this evaporator outlet temperature sensor is electrically connected with electrical controller, is conducive to carrying out according to A/C evaporator temperature out the refrigerating capacity that control flow check adjustable valve accurately regulates A/C evaporator.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the diagram of circuit of the embodiment of the present invention;
In accompanying drawing: 1.LNG steel cylinder; 2. temperature control apparatus; 3. A/C evaporator; 4. driving engine; 5. the first pipeline; 6. the second pipeline; 7. the 3rd pipeline; 8. the 4th pipeline; 9. electromagnetic valve; 10. fluid reservoir; 11. flow control valves; 12. control setup outlet temperature sensors; 13. evaporator outlet temperature sensors; 14. vehicle interior temperature sensors; 15. electrical controllers; 16. secondary refrigerant circulation lines; 17. carburetteies; 18. voltage stabilizers; 19. secondary refrigerant filling tubes; 20. auxiliary heat risers; 201. casing; 202. heat exchanger coil; 21. secondary refrigerant coil pipes; 22. circulation pumps.
Detailed description of the invention
Below by specific embodiment, a kind of LNG car air-conditioner of the present invention cycle refrigeration system is described in further detail.
As shown in Figure 1, a kind of LNG car air-conditioner cycle refrigeration system, comprise LNG steel cylinder 1, temperature control apparatus 2, A/C evaporator 3 and driving engine 4, connected by the first pipeline 5 between LNG steel cylinder 1 and temperature control apparatus 2, connected by the second pipeline 6 between temperature control apparatus 2 and A/C evaporator 3, connected by the 3rd pipeline 7 between A/C evaporator 3 and driving engine 4, the evaporator coil of A/C evaporator 3 is wound with secondary refrigerant coil pipe 21, first pipeline 5 is provided with electromagnetic valve 9 and auxiliary heat riser 20 successively along the flow direction of LNG, the heat exchanger coil 202 that auxiliary heat riser 20 comprises casing 201 and is arranged in casing 201, the arrival end of this heat exchanger coil 202 and exit end are connected on the first pipeline 5, this casing 201 is provided with the secondary refrigerant entrance be connected with secondary refrigerant filling tube 19, the inner chamber of casing 201 and the entrance of secondary refrigerant coil pipe 21, secondary refrigerant circulation line 16 is connected and composed between outlet, this follows secondary refrigerant circulation line 16 and is provided with circulation pump 22, in the present embodiment, circulation pump 22 is arranged between casing 201 and secondary refrigerant coil pipe 21 entrance, certainly, this circulation pump 22 can also be arranged in casing 201.Second pipeline 6 is provided with fluid reservoir 10 and flow control valve 11 successively along the flow direction of LNG, 3rd pipeline 7 is provided with voltage stabilizer 18, the 4th pipeline 8 is connected with between LNG steel cylinder 1 and voltage stabilizer 18,4th pipeline 8 is provided with carburetter 17, temperature control apparatus 2 exit is provided with control setup outlet temperature sensor 12, be provided with vehicle interior temperature sensor 14 in car, described electromagnetic valve 9, flow control valve 11, control setup outlet temperature sensor 12, vehicle interior temperature sensor 14 control by electrical controller 15.
In the present embodiment, temperature control apparatus 2 comprises intensification blower fan and intensification coil pipe, the two ends of intensification coil pipe export with heat exchanger coil 202 respectively, the second pipeline 6 is connected, described A/C evaporator 3 exit is also provided with evaporator outlet temperature sensor 13, this evaporator outlet temperature sensor 13 is electrically connected with electrical controller 15, the secondary refrigerant of the present embodiment is ethylene glycol, can certainly be water, preferably use the hot water of driving engine 4 hot-water line.
A kind of flow process of LNG car air-conditioner cycle refrigeration system is as follows: when the temperature signal that vehicle interior temperature sensor 14 receives does not reach air-conditioning design temperature, opened by electrical controller 15 Controlling solenoid valve 9, cryogenic liquid enters the intensification coil pipe of temperature control apparatus 2 through auxiliary heat riser 20, intensification blower fan carries out heat temperature raising to intensification coil pipe, the control setup outlet temperature sensor 12 of intensification coil outlet controls temperature out, guarantee that temperature out is between-3 ~ 5 DEG C, enter fluid reservoir 10 again to guarantee the normal feed flow of A/C evaporator 3, then flow control valve 11 is entered, the flow of flow control valve 11 is controlled by control setup, it constantly adjusts with A/C evaporator 3 temperature out: evaporator outlet temperature sensor 13 temperature reaches 10 DEG C, flow control valve 11 enlargement discharge, make more liquid enter A/C evaporator 3 and absorb heat, as A/C evaporator 3 evaporator outlet temperature sensor 1313 reach-3 DEG C time, flow control valve 11 turns flow down, reduce liquid and enter A/C evaporator 3, the gas flowing out A/C evaporator 3 arrives voltage stabilizer 18, carry out pressure adjustment, finally enter driving engine 4 to burn, if when the cold that A/C evaporator 3 provides can not meet the demand of air conditioner refrigerating, can heat with the cryogenic liquid in auxiliary heat riser 20 pairs of heat exchanger coils 202, in casing 201, secondary refrigerant is passed into by secondary refrigerant filling tube 19, cryogenic liquid to be rapidly heated between-3 ~ 5 DEG C and to be controlled by temperature control apparatus 2 pairs of temperature, then fluid reservoir 10 is delivered to, A/C evaporator 3 is entered, to meet the demand of air conditioner refrigerating through flow control valve 11, when utilizing the cryogenic liquid after auxiliary heat riser 20 and temperature control apparatus 22 heat temperature raising still can not meet the cold required for air conditioner refrigerating, open secondary refrigerant circulation line 16 and supplement cold, secondary refrigerant in casing 201 heats rear outflow to heat exchanger coil 202, the temperature of the secondary refrigerant flowed out is lower, enter in secondary refrigerant coil pipe 21 by circulation pump 22, at A/C evaporator 3 place by heat temperature raising, secondary refrigerant in secondary refrigerant coil pipe 21 discharges cold to meet air conditioner refrigerating, secondary refrigerant after secondary refrigerant coil pipe 21 heats up flow back in casing 201, the heating of heat exchanger coil 202 can be continued on for.
In above-mentioned working process, whether intensification blower fan can be selected to open according to the temperature height in heat exchanger coil 202 exit, if the natural gas temperature being transported to intensification coil outlets can meet between-3 ~ 5 DEG C, then need not open.
When the signal that vehicle interior temperature sensor 14 accepts reaches air-conditioning design temperature, control setup controls the power supply automatically cutting off electromagnetic valve 9 and temperature control apparatus 2, and a/c system is still normally blown.
When the natural fuels that air-conditioning is not opened or A/C evaporator 3 outlet exports is not enough to provide the fuel needed for driving engine 4,4th pipeline 8 is opened, low temperature LNG liquid enters carburetter 17, carburetter 17 is preferably by engine thermal water pipe heat temperature raising, in the heating gasified of hot water, natural fuels after gasification enters in voltage stabilizer 18, enters into driving engine 4 combustion after being adjusted to suitable pressure.
Claims (6)
1. a LNG car air-conditioner cycle refrigeration system, it is characterized in that: comprise LNG steel cylinder, temperature control apparatus, A/C evaporator and driving engine, connected by the first pipeline between LNG steel cylinder and temperature control apparatus, connected by the second pipeline between temperature control apparatus and A/C evaporator, connected by the 3rd pipeline between A/C evaporator and driving engine, the evaporator coil of A/C evaporator is wound with secondary refrigerant coil pipe, first pipeline is provided with electromagnetic valve and auxiliary heat riser successively along the flow direction of LNG, auxiliary heat riser comprises casing and is arranged at the heat exchanger coil in casing, the arrival end of this heat exchanger coil and exit end are connected on the first pipeline, this casing is provided with the secondary refrigerant entrance be connected with secondary refrigerant filling tube, the inner chamber of casing and the entrance of secondary refrigerant coil pipe, secondary refrigerant circulation line is connected and composed between outlet, this secondary refrigerant circulation line is provided with circulation pump, 3rd pipeline is provided with voltage stabilizer, the 4th pipeline is connected with between LNG steel cylinder and voltage stabilizer, 4th pipeline is provided with carburetter, temperature control apparatus exit is provided with control setup outlet temperature sensor, vehicle interior temperature sensor is installed in car, described electromagnetic valve, control setup outlet temperature sensor, vehicle interior temperature sensor controls by electrical controller.
2. a kind of LNG car air-conditioner cycle refrigeration system as claimed in claim 1, is characterized in that: described secondary refrigerant is ethylene glycol.
3. a kind of LNG car air-conditioner cycle refrigeration system as claimed in claim 2, is characterized in that: described circulation pump is arranged between casing and secondary refrigerant coil inlet.
4. a kind of LNG car air-conditioner cycle refrigeration system as claimed in claim 3, is characterized in that: the flow direction along LNG on described second pipeline is provided with fluid reservoir and flow control valve successively, and this flow control valve is electrically connected with electrical controller.
5. a kind of LNG car air-conditioner cycle refrigeration system as claimed in claim 4, is characterized in that: described temperature control apparatus comprises intensification blower fan and intensification coil pipe, the two ends of intensification coil pipe exports with heat exchanger coil respectively, the second pipeline is connected.
6. a kind of LNG car air-conditioner cycle refrigeration system as described in any one of claim 1 to 5, it is characterized in that: described A/C evaporator exit is also provided with evaporator outlet temperature sensor, this evaporator outlet temperature sensor is electrically connected with electrical controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310023111.XA CN103072449B (en) | 2013-01-22 | 2013-01-22 | Circulation refrigerating system for liquefied natural gas (LNG) vehicle air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310023111.XA CN103072449B (en) | 2013-01-22 | 2013-01-22 | Circulation refrigerating system for liquefied natural gas (LNG) vehicle air conditioner |
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| CN103072449A CN103072449A (en) | 2013-05-01 |
| CN103072449B true CN103072449B (en) | 2015-01-28 |
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| CN109442835A (en) * | 2018-10-17 | 2019-03-08 | 广东也节能科技有限公司 | A kind of cold energy of liquefied natural gas recycling system |
Citations (7)
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|---|---|---|---|---|
| US3640337A (en) * | 1970-03-13 | 1972-02-08 | Robert W Mcjones | Use of the heat of vaporization of a fuel as an air-conditioning medium for a vehicle |
| JPH01111518A (en) * | 1987-10-27 | 1989-04-28 | Suzuki Motor Co Ltd | Refrigerating apparatus for lng engine vehicle |
| CN102431416A (en) * | 2011-10-18 | 2012-05-02 | 潍柴动力股份有限公司 | Temperature control system applied to liquefied natural gas (LNG) automobile |
| CN102582397A (en) * | 2012-01-13 | 2012-07-18 | 华南理工大学 | Cold energy utilizing device for liquefied natural gas fueled bus |
| CN102689580A (en) * | 2012-06-05 | 2012-09-26 | 南京协众汽车空调集团有限公司 | Refrigeration air conditioning system for liquefied natural gas (LNG) vehicle |
| CN102815182A (en) * | 2012-07-10 | 2012-12-12 | 华南理工大学 | Device and method of LNG (liquefied natural gas) cold energy for truck air conditioning system |
| CN203046821U (en) * | 2013-01-22 | 2013-07-10 | 苏州赛尔科凌空调有限公司 | Air conditioner cycle refrigeration system for liquefied natural gas (LNG) vehicle |
-
2013
- 2013-01-22 CN CN201310023111.XA patent/CN103072449B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3640337A (en) * | 1970-03-13 | 1972-02-08 | Robert W Mcjones | Use of the heat of vaporization of a fuel as an air-conditioning medium for a vehicle |
| JPH01111518A (en) * | 1987-10-27 | 1989-04-28 | Suzuki Motor Co Ltd | Refrigerating apparatus for lng engine vehicle |
| CN102431416A (en) * | 2011-10-18 | 2012-05-02 | 潍柴动力股份有限公司 | Temperature control system applied to liquefied natural gas (LNG) automobile |
| CN102582397A (en) * | 2012-01-13 | 2012-07-18 | 华南理工大学 | Cold energy utilizing device for liquefied natural gas fueled bus |
| CN102689580A (en) * | 2012-06-05 | 2012-09-26 | 南京协众汽车空调集团有限公司 | Refrigeration air conditioning system for liquefied natural gas (LNG) vehicle |
| CN102815182A (en) * | 2012-07-10 | 2012-12-12 | 华南理工大学 | Device and method of LNG (liquefied natural gas) cold energy for truck air conditioning system |
| CN203046821U (en) * | 2013-01-22 | 2013-07-10 | 苏州赛尔科凌空调有限公司 | Air conditioner cycle refrigeration system for liquefied natural gas (LNG) vehicle |
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Effective date of registration: 20201010 Address after: Group 7, Zixing village, Xingdong Town, Tongzhou District, Nantong City, Jiangsu Province, 226000 Patentee after: Nantong Baoxue Refrigeration Equipment Co.,Ltd. Address before: Suzhou City, Jiangsu province 215600 Le Yu Zhen Zhangjiagang Zhaofeng industrial zone of Suzhou Saierke Ling Air Conditioning Co. Patentee before: SUZHOU SAIER-COOLING AIR-CONDITIONING Co.,Ltd. |
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