CN103072449A - 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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- CN103072449A CN103072449A CN201310023111XA CN201310023111A CN103072449A CN 103072449 A CN103072449 A CN 103072449A CN 201310023111X A CN201310023111X A CN 201310023111XA CN 201310023111 A CN201310023111 A CN 201310023111A CN 103072449 A CN103072449 A CN 103072449A
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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 the car air-conditioner field, refer to especially a kind of LNG car air-conditioner cycle refrigeration system.
Background technology
Day by day exhausted and to the attention of environmental protection along with oil resources, various countries require more and more stricter to the exhaust emission standard of automobile, accelerated the paces of development alternative fuel.Natural fuels becomes one of main alternative energy of motor vehicle fuel with environmental protection, energy-conservation, economic dispatch advantage, LNG (liquefied natural gas) especially, but with its safety, the cleaning load factor is high, use cost is low etc., and advantage is used by passenger vehicle gradually.China recent years, " the LNG development project such as West-east Gas advanced rapidly, has further promoted the development of LNG passenger vehicle, and the LNG passenger vehicle is popularized throughout the country especially and come.
At present, the orthodox car refrigeration system adopts the moving compressor of traditional belt driving band mostly both at home and abroad, make cold 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 has caused the waste of the energy.And the cold that utilizes among the LNG is also arranged at present as the refrigeration of air-conditioning, but because the amount of natural gas that driving engine consumes is slower, therefore, the refrigeration of air-conditioning can't get a desired effect at all.
Summary of the invention
Technical matters to be solved by this invention is: a kind of LNG car air-conditioner cycle refrigeration system is provided, this cycle refrigeration system has utilized the cold among the LNG fully, make the A/C evaporator refrigerating capacity large, solve the problem that the car air-conditioner of traditional use compressor cooling or refrigerating equipment cost are high, waste energy, realized reducing the dual purpose of 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 the LNG steel cylinder, temperature control apparatus, A/C evaporator and driving engine, connect by the first pipeline between LNG steel cylinder and the temperature control apparatus, connect by the second pipeline between temperature control apparatus and the A/C evaporator, connect by the 3rd pipeline between A/C evaporator and the driving engine, the evaporator coil of A/C evaporator is wound with the secondary refrigerant coil pipe, the flow direction along LNG on the first pipeline is equipped with electromagnetic valve and auxiliary heat riser successively, auxiliary heat riser comprises casing and is arranged at the interior heat exchanger coil of 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 that is connected with the secondary refrigerant filling tube, the entrance of the inner chamber of casing and secondary refrigerant coil pipe, connect and compose the secondary refrigerant circulation line between the outlet, this follows the secondary refrigerant circulation line and is provided with circulation pump, the 3rd pipeline is provided with voltage stabilizer, be connected with the 4th pipeline between LNG steel cylinder and the voltage stabilizer, on the 4th pipeline carburetter is installed, the temperature control apparatus exit is equipped with the control setup outlet temperature sensor, the vehicle interior temperature sensor is installed, described electromagnetic valve in the car, the control setup outlet temperature sensor, the vehicle interior temperature sensor is controlled by electrical controller.
As a kind of preferred scheme, described secondary refrigerant is ethylene glycol.
As a kind of preferred scheme, described circulation pump is arranged between casing and the secondary refrigerant coil pipe entrance.
As a kind of preferred scheme, the flow direction along LNG on described the second pipeline is equipped with fluid reservoir and flow control valve successively, and this flow control valve is electrically connected with electrical controller.
As a kind of preferred scheme, described temperature control apparatus comprises intensification blower fan and intensification coil pipe, and the two ends of intensification coil pipe are connected with heat exchanger coil outlet, the second pipeline respectively.
As a kind of preferred scheme, described A/C evaporator exit also is equipped with the evaporator outlet temperature sensor, and this evaporator outlet temperature sensor is electrically connected with electrical controller.
After having adopted technique scheme, effect of the present invention is: a kind of LNG car air-conditioner cycle refrigeration system, comprise the LNG steel cylinder, temperature control apparatus, A/C evaporator and driving engine, connect by the first pipeline between LNG steel cylinder and the temperature control apparatus, connect by the second pipeline between temperature control apparatus and the A/C evaporator, connect by the 3rd pipeline between A/C evaporator and the driving engine, the evaporator coil of A/C evaporator is wound with the secondary refrigerant coil pipe, the flow direction along LNG on the first pipeline is equipped with electromagnetic valve and auxiliary heat riser successively, auxiliary heat riser comprises casing and is arranged at the interior heat exchanger coil of 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 that is connected with the secondary refrigerant filling tube, the entrance of the inner chamber of casing and secondary refrigerant coil pipe, connect and compose the secondary refrigerant circulation line between the outlet, this secondary refrigerant circulation line is provided with circulation pump, the 3rd pipeline is provided with voltage stabilizer, be connected with the 4th pipeline between LNG steel cylinder and the voltage stabilizer, on the 4th pipeline carburetter is installed, the temperature control apparatus exit is equipped with the control setup outlet temperature sensor, the vehicle interior temperature sensor is installed, described electromagnetic valve in the car, the control setup outlet temperature sensor, the vehicle interior temperature sensor is controlled by electrical controller.This a kind of LNG car air-conditioner cycle refrigeration system heats cryogenic liquid by auxiliary heat riser and temperature control apparatus, to satisfy the demand of A/C evaporator, then be delivered to A/C evaporator, the cold that discharges in A/C evaporator LNG intensification gasification is used for air conditioner refrigerating, natural gas transport after the gasification is to driving engine, if the cold that discharges in the above-mentioned LNG intensification gasification very little, when being not enough to satisfy the demand of air conditioner refrigerating, then can open the secondary refrigerant circulation line, by A/C evaporator the secondary refrigerant coil pipe is heated, the cold that secondary refrigerant is emitted in the secondary refrigerant coil pipe can be used for air conditioner refrigerating, secondary refrigerant enters in the casing from the outlet of secondary refrigerant coil pipe and by heat exchanger coil the cryogenic liquid the heat exchanger coil is heated after heating up, this refrigeration system has reduced manufacturing cost, the consumption of power of driving engine, take full advantage of the cold among the 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.
Owing to the flow direction along LNG on described the second pipeline is equipped with fluid reservoir and flow control valve successively, this flow control valve is electrically connected with electrical controller again, and being conducive to accurately provides needed cold for air conditioner refrigerating.
Again because described A/C evaporator exit also is equipped with the evaporator outlet temperature sensor, this evaporator outlet temperature sensor is electrically connected with electrical controller, is conducive to control the refrigerating capacity that flow control valve is accurately regulated A/C evaporator according to the A/C evaporator temperature out.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the diagram of circuit of the embodiment of the invention;
In the accompanying drawing: the 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 valve; 12. control setup outlet temperature sensor; 13. evaporator outlet temperature sensor; 14. vehicle interior temperature sensor; 15. electrical controller; 16. secondary refrigerant circulation line; 17. carburetter; 18. voltage stabilizer; 19. secondary refrigerant filling tube; 20. auxiliary heat riser; 201. casing; 202. heat exchanger coil; 21. secondary refrigerant coil pipe; 22. circulation pump.
The specific embodiment
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, connect by the first pipeline 5 between LNG steel cylinder 1 and the temperature control apparatus 2, connect by the second pipeline 6 between temperature control apparatus 2 and the A/C evaporator 3, connect by the 3rd pipeline 7 between A/C evaporator 3 and the driving engine 4, the evaporator coil of A/C evaporator 3 is wound with secondary refrigerant coil pipe 21, the flow direction along LNG on the first pipeline 5 is equipped with electromagnetic valve 9 and auxiliary heat riser 20 successively, auxiliary heat riser 20 comprises casing 201 and the heat exchanger coil 202 that is arranged in the 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 that is connected with secondary refrigerant filling tube 19, the entrance of the inner chamber of casing 201 and secondary refrigerant coil pipe 21, connect and compose secondary refrigerant circulation line 16 between the outlet, this follows secondary refrigerant circulation line 16 and is provided with circulation pump 22, circulation pump 22 is arranged between casing 201 and secondary refrigerant coil pipe 21 entrances in the present embodiment, certainly, this circulation pump 22 can also be arranged in the casing 201.The flow direction along LNG on the second pipeline 6 is equipped with fluid reservoir 10 and flow control valve 11 successively, the 3rd pipeline 7 is provided with voltage stabilizer 18, be connected with the 4th pipeline 8 between LNG steel cylinder 1 and the voltage stabilizer 18, on the 4th pipeline 8 carburetter 17 is installed, temperature control apparatus 2 exits are equipped with control setup outlet temperature sensor 12, vehicle interior temperature sensor 14 is installed in the car, and described electromagnetic valve 9, flow control valve 11, control setup outlet temperature sensor 12, vehicle interior temperature sensor 14 are by electrical controller 15 controls.
Temperature control apparatus 2 comprises intensification blower fan and intensification coil pipe in the present embodiment, the two ends of intensification coil pipe are connected with heat exchanger coil 202 outlets, the second pipeline 6 respectively, described A/C evaporator 3 exits also are equipped 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 lines.
A kind of flow process of LNG car air-conditioner cycle refrigeration system is as follows: when the temperature signal of vehicle interior temperature sensor 14 receptions does not reach the air-conditioning design temperature, opened by electrical controller 15 control electromagnetic valves 9, cryogenic liquid enters the intensification coil pipe of temperature control apparatus 2 through auxiliary heat riser 20, the intensification blower fan carries out heat temperature raising to the intensification coil pipe, the control setup outlet temperature sensor 12 control temperature outs in intensification coil pipe exit, guarantee that temperature out is between-3 ~ 5 ℃, enter again fluid reservoir 10 to guarantee the normal feed flow of A/C evaporator 3, then enter flow control valve 11, the flow of flow control valve 11 is controlled by control setup, it is constantly adjusted with A/C evaporator 3 temperature outs: evaporator outlet temperature sensor 13 temperature reach 10 ℃, flow control valve 11 enlargement discharges, make more liquid enter A/C evaporator 3 and absorb heat, when reaching-3 ℃ such as A/C evaporator 3 evaporator outlet temperature sensors 1313, flow control valve 11 is turned flow down, reduce liquid and enter A/C evaporator 3, the gas that flows out A/C evaporator 3 arrives voltage stabilizer 18, carry out pressure and regulate, enter at last driving engine 4 burnings; When if the cold that A/C evaporator 3 provides can not satisfy the demand of air conditioner refrigerating, can heat with the cryogenic liquid in auxiliary 20 pairs of heat exchanger coils of heat riser 202, passing into secondary refrigerant by secondary refrigerant filling tube 19 in the casing 201 gets final product, cryogenic liquid is rapidly heated and controls between-3 ~ 5 ℃ and by 2 pairs of temperature of temperature control apparatus, then be delivered to fluid reservoir 10, enter A/C evaporator 3 through flow control valve 11, to satisfy the demand of air conditioner refrigerating; When the cryogenic liquid after utilizing auxiliary heat riser 20 and temperature control apparatus 22 heat temperature raisings still can not satisfy the needed cold of air conditioner refrigerating, open secondary refrigerant circulation line 16 and replenish cold, secondary refrigerant in the casing 201 is to rear outflow of heat exchanger coil 202 heating, the temperature of the secondary refrigerant that flows out is lower, enter in the secondary refrigerant coil pipe 21 by circulation pump 22,3 places are heated intensification at A/C evaporator, secondary refrigerant in the secondary refrigerant coil pipe 21 discharges cold to satisfy air conditioner refrigerating, secondary refrigerant after secondary refrigerant coil pipe 21 heats up flow back in the casing 201, can continue on for the heating of heat exchanger coil 202.
In the above-mentioned working process, whether the intensification blower fan can just be selected to open according to the temperature in heat exchanger coil 202 exits, can satisfy between-3 ~ 5 ℃ if be transported to the natural gas temperature of intensification coil pipe outlet, then needn't open.
When the signal that vehicle interior temperature sensor 14 is accepted reached the air-conditioning design temperature, the power supply of electromagnetic valve 9 and temperature control apparatus 2 was cut off in control setup control automatically, and a/c system is normally air-supply still.
Air-conditioning is not opened or the natural fuels of A/C evaporator 3 outlet output when being not enough to provide the required fuel of driving engine 4, open on the 4th pipeline 8, low temperature LNG liquid enters carburetter 17, carburetter 17 is preferably by engine thermal water pipe heat temperature raising, under the heating of hot water, gasify, natural fuels after the gasification enters in the voltage stabilizer 18, enters into driving engine 4 internal combustion after being adjusted to suitable pressure.
Claims (6)
1. LNG car air-conditioner cycle refrigeration system, it is characterized in that: comprise the LNG steel cylinder, temperature control apparatus, A/C evaporator and driving engine, connect by the first pipeline between LNG steel cylinder and the temperature control apparatus, connect by the second pipeline between temperature control apparatus and the A/C evaporator, connect by the 3rd pipeline between A/C evaporator and the driving engine, the evaporator coil of A/C evaporator is wound with the secondary refrigerant coil pipe, the flow direction along LNG on the first pipeline is equipped with electromagnetic valve and auxiliary heat riser successively, auxiliary heat riser comprises casing and is arranged at the interior heat exchanger coil of 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 that is connected with the secondary refrigerant filling tube, the entrance of the inner chamber of casing and secondary refrigerant coil pipe, connect and compose the secondary refrigerant circulation line between the outlet, this secondary refrigerant circulation line is provided with circulation pump, the 3rd pipeline is provided with voltage stabilizer, be connected with the 4th pipeline between LNG steel cylinder and the voltage stabilizer, on the 4th pipeline carburetter is installed, the temperature control apparatus exit is equipped with the control setup outlet temperature sensor, the vehicle interior temperature sensor is installed, described electromagnetic valve in the car, the control setup outlet temperature sensor, the vehicle interior temperature sensor is controlled by electrical controller.
2. a kind of LNG car air-conditioner cycle refrigeration system as claimed in claim 1, it 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, it is characterized in that: described circulation pump is arranged between casing and the secondary refrigerant coil pipe entrance.
4. a kind of LNG car air-conditioner cycle refrigeration system as claimed in claim 3, it is characterized in that: the flow direction along LNG on described the second pipeline is equipped 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, it is characterized in that: described temperature control apparatus comprises intensification blower fan and intensification coil pipe, the two ends of intensification coil pipe are connected with heat exchanger coil outlet, the second pipeline respectively.
6. such as claim 1 to 5 a kind of LNG car air-conditioner cycle refrigeration system as described in each, it is characterized in that: described A/C evaporator exit also is equipped with the evaporator outlet temperature sensor, and this evaporator outlet temperature sensor is electrically connected with electrical controller.
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| 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 true CN103072449A (en) | 2013-05-01 |
| CN103072449B CN103072449B (en) | 2015-01-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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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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