CN203046822U

CN203046822U - Air conditioning cycle refrigeration device for liquefied natural gas (LNG) car

Info

Publication number: CN203046822U
Application number: CN 201320031950
Authority: CN
Inventors: 黄伟
Original assignee: SUZHOU SAIER-COOLING AIR-CONDITIONING Co Ltd
Current assignee: SUZHOU SAIER-COOLING AIR-CONDITIONING Co Ltd
Priority date: 2013-01-22
Filing date: 2013-01-22
Publication date: 2013-07-10
Anticipated expiration: 2023-01-22

Abstract

The utility model discloses an air conditioning cycle refrigeration device for a liquefied natural gas (LNG) car. The air conditioning cycle refrigeration device for the LNG car comprises an LNG steel bottle, a temperature control device, an air conditioning evaporator and an engine, wherein the LNG steel bottle is connected with the temperature control device through a first pipeline, the temperature control device is connected with the air conditioning evaporator through a second pipeline, the air conditioning evaporator is connected with the engine through a third pipeline, the first pipeline is provided with a magnetic valve, the third pipeline is provided with a pressure stabilizer, the LNG steel bottle and the pressure stabilizer are connected with a fourth pipeline, the fourth pipeline is provided with a vaporizer, a control device outlet temperature sensor is arranged at an outlet of the temperature control device, an in-car temperature sensor is arranged in the car, and the control device outlet temperature sensor, the in-car temperature sensor and the magnetic valve are all controlled by an electric control device. The air conditioning cycle refrigeration device further comprises a heat exchanger, wherein a first medium inlet and a first medium outlet of the heat exchanger are both formed in the first pipeline, a second medium inlet of the heat exchanger is communicated with an outlet of the air conditioning evaporator through a return pipeline, and a second medium outlet of the heat exchanger is connected on the second pipeline. The air conditioning cycle refrigeration device for the LNG car is low in cost and good in refrigeration effect.

Description

LNG car air-conditioner circulating refrigerating device

Technical field

The utility model relates to the car air-conditioner field, refers to a kind of LNG car air-conditioner circulating refrigerating device especially.

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 used by passenger vehicle gradually with advantages such as its safety, cleaning load factor height, use cost are low.China recent years, " 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 fridge equipment 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.

The utility model content

Technical problem to be solved in the utility model is: a kind of LNG car air-conditioner circulating refrigerating device is provided, the problem that this fridge equipment has solved the car air-conditioner of traditional use compressor cooling or refrigerating equipment cost height, wasted energy, cold and the heat of natural fuels have been taken full advantage of, realized reduction manufacturing cost and energy-conservation dual purpose, the refrigerating capacity of air-conditioning is met the demands.

For solving the problems of the technologies described above, the technical solution of the utility model is: LNG car air-conditioner circulating refrigerating device, comprise the LNG steel cylinder, temperature control apparatus, A/C evaporator and driving engine, connect by first pipeline between LNG steel cylinder and the temperature control apparatus, connect by second pipeline between temperature control apparatus and the A/C evaporator, connect by the 3rd pipeline between A/C evaporator and the driving engine, on first pipeline electromagnetic valve is installed, 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 in the car, described control setup outlet temperature sensor, the vehicle interior temperature sensor, electromagnetic valve is controlled by electrical controller, described air-conditioning circulating refrigerating device also comprises H Exch, first medium inlet of this H Exch and outlet are connected on first pipeline, second medium inlet of H Exch is communicated with the outlet of A/C evaporator by return line, and second media outlet is connected on second pipeline.

As a kind of preferred scheme, the flow direction of the described second pipeline upper edge LNG 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, second media outlet of described H Exch is connected with fluid reservoir.

As a kind of preferred scheme, described H Exch is double pipe heat exchanger.

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 H Exch first media outlet, 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 utility model is: LNG car air-conditioner circulating refrigerating device, comprise the LNG steel cylinder, temperature control apparatus, A/C evaporator and driving engine, connect by first pipeline between LNG steel cylinder and the temperature control apparatus, connect by second pipeline between temperature control apparatus and the A/C evaporator, connect by the 3rd pipeline between A/C evaporator and the driving engine, on first pipeline electromagnetic valve is installed, 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 in the car, described control setup outlet temperature sensor, the vehicle interior temperature sensor, electromagnetic valve is controlled by electrical controller, described air-conditioning circulating refrigerating device also comprises H Exch, first medium inlet of this H Exch and outlet are connected on first pipeline, second medium inlet of H Exch is communicated with the outlet of A/C evaporator by return line, and second media outlet is connected on second pipeline.This LNG car air-conditioner circulating refrigerating device is used for air conditioner refrigerating with the LNG cold that discharges in the gasification that heats up, natural gas transport after the gasification is to driving engine, if the amount of the natural fuels that driving engine consumes is few, may cause in the A/C evaporator flow of natural fuels less, so air conditioner refrigerating quantity not sufficient, at this moment can open return line, strengthen the LNG flow in the A/C evaporator, and the higher natural fuels of gasification back temperature carries out interchange of heat by the low temperature LNG that flows out in H Exch and the LNG steel cylinder, this fridge equipment has reduced the parts of vehicle refrigeration equipment on the one hand, alleviated vehicle weight, reduced manufacturing cost, the consumption of power of driving engine has been realized the recycle of natural fuels heat and cold on the other hand, and is both pollution-free, realize the double effects of energy-saving and emission-reduction again, and also can improve the refrigeration of A/C evaporator.

Because the flow direction of the described second pipeline upper edge LNG is equipped with fluid reservoir and flow control valve successively, and this flow control valve is electrically connected with electrical controller, being conducive to accurately provides needed cold for air conditioner refrigerating again.

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, temperature according to the A/C evaporator exit, can control the flow velocity that flow control valve and then control enter the natural fuels in the A/C evaporator, regulate the refrigerating capacity of A/C evaporator.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the diagram of circuit of the utility model embodiment;

In the accompanying drawing: the 1.LNG steel cylinder; 2. temperature control apparatus; 3. A/C evaporator; 4. driving engine; 5. first pipeline; 6. 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. H Exch; 161. first medium inlet; 162. first media outlet; 163. second medium inlet; 164. second media outlet; 17. carburetter; 18. voltage stabilizer; 19. engine thermal water pipe; 20. return line.

The specific embodiment

Below by specific embodiment the utility model LNG car air-conditioner circulating refrigerating device is described in further detail.

As shown in Figure 1, LNG car air-conditioner circulating refrigerating device, comprise LNG steel cylinder 1, temperature control apparatus 2, A/C evaporator 3 and driving engine 4, connect by first pipeline 5 between LNG steel cylinder 1 and the temperature control apparatus 2, connect by 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, on first pipeline 5 electromagnetic valve 9 is installed, the flow direction of second pipeline, 6 upper edge LNG is equipped with fluid reservoir 10 and flow control valve 11 successively, this flow control valve 11 is electrically connected with electrical controller 15, 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, carburetter 17 is by 19 heating of engine thermal water pipe, temperature control apparatus 2 exits are equipped with control setup outlet temperature sensor 12, vehicle interior temperature sensor 14 is installed in the car, A/C evaporator 3 exits also are equipped with evaporator outlet temperature sensor 13, described evaporator outlet temperature sensor 13, control setup outlet temperature sensor 12, vehicle interior temperature sensor 14, electromagnetic valve 9 is by electrical controller 15 controls, described air-conditioning circulating refrigerating device also comprises H Exch 16, first medium inlet 161 of this H Exch 16 and outlet are connected on first pipeline 5, second medium inlet 163 of H Exch 16 is communicated with the outlet of A/C evaporator 3 by return line 20, and second media outlet 164 is connected on second pipeline 6.Second media outlet 164 of H Exch described in the present embodiment 16 is connected with fluid reservoir 10, H Exch 16 is double pipe heat exchanger, temperature control apparatus 2 comprises intensification blower fan and intensification coil pipe, and the two ends of intensification coil pipe are connected with H Exch 16 first media outlets 162, second pipeline 6 respectively.

The 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 over-heat-exchanger 16, 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 fluid reservoir 10 again to guarantee the normal feed flow of A/C evaporator 3, enter flow control valve 11 then, the flow of flow control valve 11 is controlled by control setup, it is constantly adjusted with A/C evaporator 3 inlet temperatures: 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, emit cold, when reaching-3 ℃ as A/C evaporator 3 evaporator outlet temperature sensors 13, 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 driving engine 4 burnings at last; If A/C evaporator 3 is too much to the gaseous natural gas that driving engine 4 transfers out, the demand that exceeds driving engine 4, then can open return line 20, unnecessary gaseous natural gas enters by second medium inlet 163 and enters H Exch 16, to the cryogenic liquid LNG heat temperature raising in the H Exch 16, whether the blower fan that heats up this moment can just be selected to open according to the temperature at first media outlet, 162 places, if the temperature of intensification coil pipe outlet can satisfy between-3 ~ 5 ℃, then needn't open.

When the signal of vehicle interior temperature sensor 14 acceptance 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.

When the gaseous natural gas that air-conditioning is not opened or A/C evaporator 3 outlets are exported is not enough to satisfy the demand of driving engine 4, the 4th pipeline 8 is opened, cryogenic liquid in the LNG steel cylinder 1 enters in the carburetter 17,19 pairs of cryogenic liquids of engine thermal water pipe heat, liquid after the heating enters voltage stabilizer 18 and adjusts pressure, enters then in the driving engine 4 and burns.

Claims

1.LNG car air-conditioner circulating refrigerating device, it is characterized in that: comprise the LNG steel cylinder, temperature control apparatus, A/C evaporator and driving engine, connect by first pipeline between LNG steel cylinder and the temperature control apparatus, connect by second pipeline between temperature control apparatus and the A/C evaporator, connect by the 3rd pipeline between A/C evaporator and the driving engine, on first pipeline electromagnetic valve is installed, 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 in the car, described control setup outlet temperature sensor, the vehicle interior temperature sensor, electromagnetic valve is controlled by electrical controller, described air-conditioning circulating refrigerating device also comprises H Exch, first medium inlet of this H Exch and outlet are connected on first pipeline, second medium inlet of H Exch is communicated with the outlet of A/C evaporator by return line, and second media outlet is connected on second pipeline.

2. LNG car air-conditioner circulating refrigerating device according to claim 1, it is characterized in that: the flow direction of the described second pipeline upper edge LNG is equipped with fluid reservoir and flow control valve successively, and this flow control valve is electrically connected with electrical controller.

3. as LNG car air-conditioner circulating refrigerating device as described in the claim 2, it is characterized in that: second media outlet of described H Exch is connected with fluid reservoir.

4. as claim 1 to 3 LNG car air-conditioner circulating refrigerating device as described in each, it is characterized in that: described H Exch is double pipe heat exchanger.

5. as LNG car air-conditioner circulating refrigerating device as described in the claim 4, it is characterized in that: described temperature control apparatus comprises intensification blower fan and intensification coil pipe, and the two ends of intensification coil pipe are connected with H Exch first media outlet, second pipeline respectively.

6. as LNG car air-conditioner circulating refrigerating device as described in the claim 5, 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.