CN203472458U

CN203472458U - LNG automobile air-conditioning system

Info

Publication number: CN203472458U
Application number: CN201320594922.0U
Authority: CN
Inventors: 郑双喜; 陈卫华
Original assignee: HUBEI HUILIBAI INVESTMENT CO Ltd
Current assignee: HUBEI HUILIBAI INVESTMENT CO Ltd
Priority date: 2013-09-26
Filing date: 2013-09-26
Publication date: 2014-03-12
Anticipated expiration: 2023-09-26

Abstract

The utility model provides an LNG automobile air-conditioning system which comprises an expansion water tank. An LNG liquid storage tank is connected with an LNG engine through a gas pipeline and then is connected with an A/C wind speed converter through a line, and the LNG liquid storage tank is connected with an LNG gasification converter through a gas pipeline in parallel and then connected to the LNG engine. The expansion water tank is connected with an LNG gasification converter and a liquid evaporator through water pipes, and thus circulation to the expansion water tank is formed. According to the LNG automobile air-conditioning system, heat dissipation is carried out on the water path of the expansion water tank by using cooling capacity of the LNG gasification converter after gasification, gasification excessive energy is utilized, energy resources are also saved, the energy of the air-conditioning system is utilized more sufficiently, and the LNG automobile air-conditioning system is simple in structure, economical and practical.

Description

LNG automotive air-conditioning system

Technical field

The utility model relates to automotive air-conditioning system, LNG automotive air-conditioning system particularly, and the cold discharging during specifically by LNG liquefied natural gas gasifying reclaims, for the air-conditioning refrigeration system of the indoor cooling of vehicle drive.

Background technology

CNG automobile with compressed natural gas, CNG needs height storage pressure more than 20MPa, and current LNG LNGV, LNG storage pressure only has 1.5MPa left and right, and the volume of LNG only has 1/620 of gaseous state (reference standard conditions), energy storage density is approximately 3 times of CNG, so the travelled distance of LNG automobile further improves, and the effect that reduces noxious gas emission is more obvious.

Take the automobile that LNG is fuel, LNG is before entering driving engine, the gaseous state that must convert normal temperature to by-162 ℃ of low temperature liquids just can enter engine combustion, in the change of this state, LNG can discharge a large amount of colds, the air-conditioning refrigeration system proposing herein, utilizes this cold for the indoor cooling of vehicle drive exactly, and arrives the maximum utilization of energy.

It is on probation that LNG starts entrucking at automotive field with its environment friendly and pollution-free new forms of energy, and obtained good Social benefit and economic benefit, LNG air conditioning for automobiles is as the also trial assembly in this field of necessary part of automobile, but each producer is different to the structure of LNG air conditioning for automobiles and installation, and the effect of using is also different.

Summary of the invention

The utility model is in order to utilize better the physical property of LNG, and spy proposes LNG automotive air-conditioning system.

The technical solution of the utility model is for this reason: LNG automotive air-conditioning system, comprise expansion tank, LNG fluid reservoir is connected with LNG driving engine by gas pipe line, by connection, there is A/C wind speed conv again, it is characterized in that: LNG fluid reservoir is connected in parallel to LNG gasification exchanger to LNG driving engine by gas pipe line again; Expansion tank by water pipe be connected with LNG gasification exchanger, liquid evaporator is circulated to expansion tank by water pipe.

Improvement to such scheme is: wherein on the gas pipe line of LNG fluid reservoir and LNG driving engine, series connection is provided with electromagnetic gas valve and vaporization gas tank; Before LNG driving engine, be provided with storage tank and temperature sensor, temperature sensor by connection to A/C wind speed conv.

Improvement to such scheme is: in liquid evaporator loong shunt, have water pipe, and be provided with electromagnetic water valve on water pipe, electromagnetic water valve is controlled by A/C wind speed conv.

Improvement to such scheme is: on the water pipe before LNG gasification exchanger, series winding is provided with water pump and filters visor.

Improvement to such scheme is: the water pipe after LNG gasification exchanger is provided with temperature sensor, and liquid evaporator is provided with temperature sensor outward, then is connected to A/C wind speed conv.

Improvement to such scheme is: liquid evaporator is provided with cooling blower outward, by A/C conv, controls.

Improvement to such scheme is: A/C wind speed conv is separately provided with temperature sensor outward.

Beneficial effect:

The utility model utilizes the cold after the gasification of LNG gasification exchanger to dispel the heat to the water route of expansion tank, not only the superfluous energy that gasifies is utilized, also saved the energy, the energy of a/c system is utilized more fully simultaneously, simple in structure economical and practical.

The use of electromagnetic gas valve and vaporization gas tank makes LNG obtain pressure rapid flow; Before LNG driving engine, be provided with the effect that storage tank and temperature sensor not only play energy storage, can also be to monitoring temperature.

In liquid evaporator loong shunt, have water pipe, and be provided with electromagnetic water valve on water pipe, electromagnetic water valve is controlled by A/C conv, can accelerate flowing of water, plays good thermolysis.

The use of temperature sensor can be controlled by A/C wind speed conv, and whole system is monitored.

Liquid evaporator is provided with cooling blower and fluid temperature sensor outward, by A/C wind speed conv, is controlled and can be carried out quick heat radiating to liquid evaporator.

Temperature sensor outside A/C wind speed conv can be monitored outdoor temperature, and whole system is controlled.

Accompanying drawing explanation

Fig. 1 is connection diagram of the present utility model.

In figure, 1 is expansion tank, the 2nd, LNG fluid reservoir, the 3rd, A/C wind speed conv, the 4th, LNG driving engine, the 5th, liquid evaporator, the 6th, the LNG exchanger that gasifies, the 7th, fluid temperature sensor, the 8th, temperature sensor, the 9th, temperature sensor, 10 temperature sensors, the 11st, water pump, the 12nd, filter visor, the 13rd, electromagnetic gas valve, the 14th, electromagnetic water valve, the 15th, vaporization gas tank, the 16th, storage tank, the 17th, cooling blower, the 18th, water pipe, the 19th, circuit, the 20th, gas pipe line.

The specific embodiment

The utility model as shown in Figure 1.

LNG automotive air-conditioning system, comprise expansion tank 1, LNG fluid reservoir 2 is connected with LNG driving engine 4 by gas pipe line 20, then is connected with A/C wind speed conv 3 by circuit 19, and LNG fluid reservoir 2 is connected in parallel to LNG gasification exchanger 6 to LNG driving engines 4 by gas pipe line 20 again; Expansion tank 1 by water pipe 18 be connected with LNG gasification exchanger 6, liquid evaporator 5 is circulated to expansion tank 1 by water pipe 18.

Wherein on the gas pipe line 20 of LNG fluid reservoir 2 and LNG driving engine 4, series connection is provided with electromagnetic gas valve 13 and vaporization gas tank 15; Before LNG driving engine 4, be provided with storage tank 16 and temperature sensor 10, temperature sensor 10 is connected to A/C wind speed conv 3 by circuit 19.

In liquid evaporator 5 loong shunts, have water pipe 18, and be provided with electromagnetic water valve 14 on water pipe 18, electromagnetic water valve 14 is controlled by A/C wind speed conv 3.

On water pipe 18 before LNG gasification exchanger 6, series winding is provided with water pump 11 and filters visor 12.

Water pipe 18 after LNG gasification exchanger 6 is provided with temperature sensor 8, and liquid evaporator 5 is outer is provided with temperature sensor 7, then is connected to A/C wind speed conv 3.

The outer cooling blower 17 that is provided with of liquid evaporator 5, controls by A/C wind speed conv 3.

The outer temperature sensor 9 that is separately provided with of A/C wind speed conv 3.

This LNG cold energy of liquefied natural gas reclaims automobile air conditioning refrigerating system, comprise LNG gasification heat exchanger 6, liquid evaporator 5, expansion tank 1, water pump 11, electromagnetic gas valve 13, the parts such as electromagnetic water valve 14, filtration visor 12, and in system, fill the medium that automobile ethylene glycol solution transmits as cold.

In use natural gas tank valve being opened to LNG enters through gas pipe line 20, through three grades of heat exchange LNG and the cold and hot exchange of ethylene glycol solution, make LNG temperature constantly increase and ethylene glycol solution temperature is constantly descended overflow, LNG after temperature rises is connected with reducing valve and sends into driving engine use. and by ethylene glycol solution LNG gasification heat exchanger 6, water pump 11 and expansion tank 1, filtration after lowering the temperature, looked border 12, it is coloured glaze that electromagnetic water valve 14, electromagnetic gas valve 13 are interconnected to form an air-conditioning by air conditioner rubber pipe. and be provided with a/c system electronic control system.

Energy accumulating state is: A/C wind speed conv 3 switch opens, at the outdoor temperature sensor 9 that is provided with, when arriving design temperature, air-conditioner energy-accumulation state starts, (at this moment drive indoor temperature and also do not reach the state of turning on the aircondition), when hold temperature when too low the temperature of (state freezes) heat exchanger water inlet pass puzzled device and will open LNG magnet valve door, now LNG liquid will only tap into into LNG gasification heat exchanger 6, the LNG heat exchanger assembly inefficacy of can not freezing like this, the LNG gas temperature needing when driving engine is due to accumulation of energy during lower than operating needs. and storage tank 16 temperature sensor 10 below will be opened LNG electromagnetic gas valve 13, with temperature sensor 7 on the liquid evaporator 5 of being taken in, perceive in the time of will freezing state and will open electromagnetic water valve 14, ethylene glycol liquid after short circuit will not freeze to guarantee liquid evaporator 5 at influent evaporator 5.

Use air-conditioning state. A/C wind speed conv 3 is opened. the wind speed that selection needs.

In the circulation of refrigerant fluid, between 6 outlets of LNG gasification heat exchanger and liquid evaporator 5 imports, be connected into expansion tank 1, wherein the function of expansion tank 1 is: 1. for the filling of refrigerant fluid; 2. when liquid loses, can supplement .3. expansion tank 1 filler opening and adopt decompression protection lid; can guarantee normal operation and the equilibrium of pressure of coolant circulation system; simultaneously when LNG is when LNG gasifies heat exchanger 6 interior leakage; too high pressure can be discharged by decompression cover, to protect this air-conditioning refrigeration system.

Water pump 11 is set, in order to the circulation power of refrigerant fluid to be provided on the loop before liquid evaporator 5.

When needs refrigerating function, open the water pump 11 of air-conditioning refrigeration system, refrigerant fluid starts to circulate in refrigeration system, now from LNG liquid storage 2 liquified natural gas out, after reducing pressure by regulating flow, enter LNG gasification heat exchanger 6, liquid natural fuels in LNG gasification heat exchanger 6, the heat of circulating cooling liquid in absorbent refrigeration system, and become the natural fuels of gaseous state, and enter engine combustion through processes such as voltage stabilizings.In LNG gasification heat exchanger 6, the cold discharging while vaporizing due to liquified natural gas has passed to refrigerant fluid simultaneously, and now refrigerant fluid becomes the liquid of low temperature and circulates in refrigeration system.The refrigerant fluid of low temperature directly enters liquid evaporator 5, and carries out interchange of heat in liquid evaporator 5, absorbs airborne heat and reaches the object of refrigeration.

The simple cooling cycle system exchanging by refrigerant fluid second heat, the cold recovery that LNG vaporization is discharged, and for the refrigeration in operator's compartment, realized the object that maximum is utilized energy.When not using refrigerating function, close A/C Wind speed switch 3 and make this magnetic valve open of LNG electricity, now will recover the gaseity that supplies of former car. this refrigeration system is by simple cyclic process, just the cold of LNG can be reclaimed, and system unit is simple in structure, the utility model has also proposed concrete grammar first to the control of air conditioner refrigerating circulation simultaneously.

Claims

1.LNG automotive air-conditioning system, comprise expansion tank, LNG fluid reservoir is connected with LNG driving engine by gas pipe line, then has A/C wind speed conv by connection, it is characterized in that: LNG fluid reservoir is connected in parallel to LNG gasification exchanger to LNG driving engine by gas pipe line again; Expansion tank by water pipe be connected with LNG gasification exchanger, liquid evaporator is circulated to expansion tank by water pipe.

2. LNG automotive air-conditioning system according to claim 1, is characterized in that: wherein on the gas pipe line of LNG fluid reservoir and LNG driving engine, series connection is provided with electromagnetic gas valve and vaporization gas tank; Before LNG driving engine, be provided with storage tank and temperature sensor, temperature sensor by connection to A/C wind speed conv.

3. LNG automotive air-conditioning system according to claim 1, is characterized in that: in liquid evaporator loong shunt, have water pipe, and be provided with electromagnetic water valve on water pipe, electromagnetic water valve is controlled by A/C wind speed conv.

4. LNG automotive air-conditioning system according to claim 1 and 2, is characterized in that: on the water pipe before LNG gasification exchanger, series winding is provided with water pump and filters visor.

5. according to right, want the LNG automotive air-conditioning system described in 4, it is characterized in that: the water pipe after LNG gasification exchanger is provided with temperature sensor, and liquid evaporator is provided with temperature sensor outward, then is connected to A/C wind speed conv.

6. according to the LNG automotive air-conditioning system described in claim 2 or 5, it is characterized in that: liquid evaporator is provided with cooling blower outward, by A/C wind speed conv, control.

7. according to the LNG automotive air-conditioning system described in claim 1 or 2 or 5, it is characterized in that: A/C wind speed conv is separately provided with temperature sensor outward.