CN202719700U - Refrigeration air conditioner system for liquefied natural gas automobile - Google Patents
Refrigeration air conditioner system for liquefied natural gas automobile Download PDFInfo
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- CN202719700U CN202719700U CN 201220261595 CN201220261595U CN202719700U CN 202719700 U CN202719700 U CN 202719700U CN 201220261595 CN201220261595 CN 201220261595 CN 201220261595 U CN201220261595 U CN 201220261595U CN 202719700 U CN202719700 U CN 202719700U
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- heat exchanger
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Abstract
The utility model discloses a refrigeration air conditioner system for a liquefied natural gas automobile, which comprises a liquefied natural gas cylinder, a flow regulating valve, a refrigeration core body, a pump, a one-way valve, a heat exchanger and a low-temperature valve, wherein the flow regulating valve is provided with an input hole, a first output hole and a second output hole; the input hole of the flow regulating valve is connected with an output hole of the liquefied natural gas cylinder by the low-temperature valve; the first output hole of the flow regulating valve is connected with a liquefied gas input hole of the heat exchanger; a liquefied gas output hole of the heat exchanger is connected with an input hole of the one-way valve; an output hole of the one-way valve is respectively connected with a liquefied gas input pipeline of an engine and the second output hole of the flow regulating valve; a refrigerating medium output hole of the heat exchanger is connected with an input hole of the refrigeration core body; and an output hole of the refrigeration core body is connected with a refrigerating medium input hole of the heat exchanger by the pump. The refrigeration air conditioner system can be used for refrigerating by utilizing liquefied natural gas to absorb latent heat of vaporization generated when the liquefied natural gas is gasified, is not driven by the engine and does not use Freon, thus having the characteristics of being energy-saving and environment-friendly.
Description
Technical field
The utility model relates to a kind of LNGV refrigerated air-conditioning system.
Background technology
LNGV uses liquefied natural gas to be fuel, compare with the automobile that uses other fuel, it is few that it has a pollutant emission, energy saving economy, the advantage that distance travelled is long is abundant at natural gas resource and have the area of liquefied natural gas filling station to be used widely at present.Liquefied natural gas is with pressurization cooling behind the natural gas fine purification, thereby makes its liquefaction and be stored in the steel cylinder of adiabatic heat-insulation.In use, out liquefied natural gas gasifying becomes gas in the steel cylinder, again after the heating system heating of engine for engine.Absorb a large amount of gasification latent heats (gasification latent heat of every kilogram of liquefied natural gas reaches 510 kilojoules) during liquefied natural gas gasifying.
Automobile refrigerating air-conditioning commonly used all is to freeze with the mode of compressed vapour, automobile engine drive compression machine compression fluorine Lyons steam when refrigeration, and compressed steam becomes liquid after heat radiation, gasify in evaporimeter, thereby absorb the gasification latent heat refrigeration.This refrigeration air-conditioner by motor driven, has increased the oil consumption of automobile when work.And there is certain pollution in the fluorine Lyons of leaking to atmospheric environment.
The utility model patent is to utilize the automobile refrigerating air-conditioning system of liquefied natural gas gasifying latent heat, is the gasification latent heat of liquefied natural gas owing to what utilize, so this air-conditioning without motor driven, also without fluorine Lyons, has energy-conservation and characteristics environmental protection.
Summary of the invention
Goal of the invention: the purpose of this utility model is the shortcoming that overcomes existing automobile refrigerating air-conditioning, and a kind of automobile refrigerated air-conditioning system that gasification latent heat freezes that absorbs when utilizing liquefied natural gas gasifying is provided.
In order to solve the problems of the technologies described above, the utility model has adopted following technical scheme:
A kind of LNGV refrigerated air-conditioning system comprises liquefied natural gas bottle, flow control valve, refrigeration core body, pump, check valve, heat exchanger and low temperature valve; Described flow control valve contains input port, the first delivery outlet and the second delivery outlet, the input port of flow control valve connects the delivery outlet of liquefied natural gas bottle by low temperature valve, the first delivery outlet of flow control valve connects the liquefied gas input port of heat exchanger, the liquefied gas delivery outlet of heat exchanger connects the input port of check valve, the liquefied gas intake line of the delivery outlet difference connecting engine of check valve and the second delivery outlet of flow control valve; The refrigerant delivery outlet of heat exchanger connects the input port of refrigeration core body, and the delivery outlet of refrigeration core body connects the refrigerant input port of heat exchanger by pump.
Wherein, the connecting line between check valve delivery outlet and flow control valve the second delivery outlet arranges pressure sensor, at the liquefied gas intake line of engine pressure-regulating valve is set.
Wherein, the connecting line between heat exchanger refrigerant delivery outlet and refrigeration core body input port sets gradually the first temperature sensor, water pressure tank and the second temperature sensor.
Wherein, the refrigerant by heat exchanger adopts ethylene glycol solution.
Compare with existing automobile refrigerating air-conditioning, the utlity model has following characteristics:
(1) the utility model absorbs gasification latent heat when utilizing liquefied natural gas gasifying and freezes, and without motor driven, also without fluorine Lyons, has energy-conservation and characteristics environmental protection;
(2) on the gas pipeline pressure-regulating valve is housed, thereby liquefied natural gas is gasified under certain pressure, improve the temperature of the natural gas of gasification, thus the temperature difference when having reduced the heat exchanger heat exchange, and can reduce the danger that ethylene glycol solution freezes;
(3) the refrigerant equipped at outlet port at heat exchanger is equipped with temperature sensor, the ethylene glycol temperature is excessively low within temperature sensor signal shows heat exchanger, have icing when dangerous, control circuit adjust flux control valve reduces to enter the flow of the natural gas of heat exchanger, thereby reduce heat exchange power, prevent that ethylene glycol solution from freezing;
(4) there is a temperature sensor refrigeration core body porch, and when the temperature of measuring when sensor is higher or lower than the temperature of setting, thereby control circuit adjust flux control valve changes the heat exchange amount of heat exchanger, changes the temperature of ethylene glycol solution;
(5) on the ethylene glycol solution pipeline water pressure tank is arranged, a large amount of ethylene glycol solutions is arranged in it, the ethylene glycol solution that is used for and flows out in the heat exchanger mixes, and the variations in temperature of buffering ethylene glycol solution prevents because the control system that the jump in temperature of ethylene glycol solution causes is vibrated.
Description of drawings
Fig. 1 is structural representation of the present utility model.
The specific embodiment:
Below in conjunction with accompanying drawing the utility model is done further explanation.
As shown in Figure 1, a kind of LNGV of the present utility model comprises liquefied natural gas bottle 1, flow control valve 2, refrigeration core body 6, pump 7, check valve 9, heat exchanger 11 and low temperature valve 12 with refrigerated air-conditioning system.Refrigeration core body 6 is existing product heater cores, is heater cores during logical hot water, has just become the refrigeration core body during logical cold water.
Flow control valve 2 contains input port, the first delivery outlet and the second delivery outlet, the input port of flow control valve 2 connects the delivery outlet of liquefied natural gas bottle 1 by low temperature valve 12, the first delivery outlet of flow control valve 2 connects the liquefied gas input port of heat exchanger 11, the liquefied gas delivery outlet of heat exchanger 11 connects the input port of check valve 9, the liquefied gas intake line 13 of the delivery outlet difference connecting engine of check valve 9 and the second delivery outlet of flow control valve 2.Connecting line between check valve 9 delivery outlets and flow control valve 2 second delivery outlets arranges pressure sensor 10, at the liquefied gas intake line 13 of engine pressure-regulating valve 8 is set.The input port of the refrigerant delivery outlet connection refrigeration core body 6 of heat exchanger 11, the delivery outlet of refrigeration core body 6 are by the refrigerant input port of pump 7 connection heat exchangers 11, by the refrigerant employing ethylene glycol solution of heat exchanger 11.Connecting line between heat exchanger 11 refrigerant delivery outlets and refrigeration core body 6 input ports sets gradually the first temperature sensor 3, water pressure tank 4 and the second temperature sensor 5.Flow control valve 2, the first temperature sensor 3, the second temperature sensor 5 are connected with pressure sensor and are connected with the control circuit of refrigerated air-conditioning system.
When engine operation, gasify behind low temperature valve 12 from 1 li liquefied natural gas out of liquefied natural gas bottle, be divided into two-way through flow control valve 2.One the tunnel enters the ethylene glycol solution in heat exchanger 11 cooling heat exchangers, and heat exchanger is directly walked around on another road.Because the gasification temperature extremely low (being generally-162 ° of C) of liquefied natural gas under standard atmospheric pressure (about 0.1MPa), ethylene glycol solution is frozen, control circuit comes controlled pressure control valve 8 by the force value that collection pressure sensor 10 records, the pressure of heat exchanger 11 interior natural gases is raise, thereby improve the gasification temperature of liquefied natural gas, when critical pressure 4.6MPa, the gasification temperature of liquefied natural gas is-80 ° of C, can reduce like this danger that ethylene glycol solution freezes.
Ethylene glycol solution is after 11 li on heat exchanger is cooled off by natural gas, be extracted into through water pressure tank 4 by pump 7 again and be positioned at the indoor refrigeration core body 6 of car steering, absorb the heat in the driver's cabin, the ethylene glycol solution after being heated is admitted to heat exchanger 11 coolings again, thereby realizes kind of refrigeration cycle.Water pressure tank 4 has a large amount of ethylene glycol solutions in it, is used for and the ethylene glycol solution that flows out in the heat exchanger mixes, and the variations in temperature of buffering ethylene glycol solution prevents because the control system that the jump in temperature of ethylene glycol solution causes is vibrated.
Control circuit is controlled according to the first temperature sensor 3, the second temperature sensor 5 and 10 pairs of air-conditioning systems of pressure sensor.Control circuit gathers the temperature information that the second temperature sensor 5 records, and compare with the design temperature of air-conditioning, when the temperature that records when the second temperature sensor 5 is higher than the temperature of design, control circuit is with adjust flux control valve 2, increase the cryogenic natural gas amount that enters heat exchanger 11, reduce the amount of natural gas of walking around heat exchanger 11, thereby increase the refrigerating capacity of heat exchanger 11, reduce the temperature of ethylene glycol solution.If instead the temperature that the second temperature sensor 5 records is lower than setting value, then reduce the gas discharge that enters heat exchanger 11, improve the temperature of ethylene glycol solution.
The first temperature sensor 3 arranges in order to prevent heat exchanger 11 from freezing, because the cushioning effect of water pressure tank 4 is arranged, the second temperature sensor 5 is the ethylene glycol solution temperature of the refrigerant equipped at outlet port of reacting replacing heat device 11 rapidly.When the temperature that records when the first temperature sensor 3 is lower than design temperature (design temperature can and stay certain safe dose to set according to the freezing temperature of ethylene glycol solution), control circuit is with adjust flux control valve 2, reduce to enter the gas discharge in the heat exchanger 11, thereby prevent from freezing.
When not needing air conditioner refrigerating, control circuit adjust flux control valve 2 makes natural gas walk around heat exchanger 11 fully, and owing to the effect of check valve 9, cryogenic natural gas can not enter heat exchanger 11 simultaneously, thereby prevent that heat exchanger temperature 11 from spending lowly, heat exchanger 11 interior ethylene glycol solutions freeze.
More than be basic principle and the structure of the utility model patent, the product that principle and structure based on the utility model patent are further improved also should belong to the protection domain of the utility model patent.
Claims (4)
1. a LNGV refrigerated air-conditioning system is characterized in that: comprise liquefied natural gas bottle (1), flow control valve (2), refrigeration core body (6), pump (7), check valve (9), heat exchanger (11) and low temperature valve (12); Described flow control valve (2) contains input port, the first delivery outlet and the second delivery outlet, the input port of flow control valve (2) connects the delivery outlet of liquefied natural gas bottle (1) by low temperature valve (12), the first delivery outlet of flow control valve (2) connects the liquefied gas input port of heat exchanger (11), the liquefied gas delivery outlet of heat exchanger (11) connects the input port of check valve (9), the liquefied gas intake line (13) of the delivery outlet difference connecting engine of check valve (9) and the second delivery outlet of flow control valve (2); The refrigerant delivery outlet of heat exchanger (11) connects the input port of refrigeration core body (6), and the delivery outlet of refrigeration core body (6) connects the refrigerant input port of heat exchanger (11) by pump (7).
2. a kind of LNGV refrigerated air-conditioning system according to claim 1, it is characterized in that: the connecting line between check valve (9) delivery outlet and flow control valve (2) second delivery outlets arranges pressure sensor (10), at the liquefied gas intake line (13) of engine pressure-regulating valve (8) is set.
3. a kind of LNGV refrigerated air-conditioning system according to claim 1 is characterized in that: the connecting line between heat exchanger (11) refrigerant delivery outlet and refrigeration core body (6) input port sets gradually the first temperature sensor (3), water pressure tank (4) and the second temperature sensor (5).
4. a kind of LNGV refrigerated air-conditioning system according to claim 1 is characterized in that: by the refrigerant employing ethylene glycol solution of heat exchanger (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220261595 CN202719700U (en) | 2012-06-05 | 2012-06-05 | Refrigeration air conditioner system for liquefied natural gas automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220261595 CN202719700U (en) | 2012-06-05 | 2012-06-05 | Refrigeration air conditioner system for liquefied natural gas automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202719700U true CN202719700U (en) | 2013-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220261595 Expired - Lifetime CN202719700U (en) | 2012-06-05 | 2012-06-05 | Refrigeration air conditioner system for liquefied natural gas automobile |
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| CN (1) | CN202719700U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2012
- 2012-06-05 CN CN 201220261595 patent/CN202719700U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130206 |