CN2199889Y - Diffusion-absorption type vehicle waste heat air conditioner - Google Patents

Abstract

The utility model relates to a vehicle waste heat air conditioner of a diffusion-absorption type. The utility model takes ammonia, water, and helium as working medium and takes the exhaust heat of the exhausted gas of the motor of an automobile as energy. A heating system is composed of upper and lower heat accumulators and heating pipes, and heat carrier in the heat accumulators is heated through the exhaust pipes of the vehicle. A refrigerant system comprises a regenerator, a condenser, an evaporator, the heat exchanger of gas, a mixer, an absorber, and a reservoir, wherein, the lifting pipes of the regenerator are more than and equal to four pipes, and rectifying pipes are in the serpentine pipe of the structure of three sleeves. The ammonium positioned in the lifting pipes absorbs the heat of the upper heat accumulator, the ammonium makes liquid surface lift from being boiled away. Through the ammonium is continuously boiled away and helium gas with high purity is output from the condenser, and the ammonia gas flows into the condenser with the helium gas simultaneously through the condenser, making the pressure of the ammonia drop to generate refrigerant capacity.

Description

Diffusion-absorption type vehicle waste heat air conditioner

The utility model relates to a kind of air conditioner for vehicle, and special is that refrigerant, water are that absorbent, unreactable gas are the automobile-used waste heat A/C of spread-absorbing type of diffusant with ammonia.

The spread-absorbing type refrigeration system is except that adopting refrigerant, two kinds of working medium of absorbent, also charge into unreactable gas shop assistant engineer's matter,, the liquefied ammonia dividing potential drop is reduced and evaporation is produced cold by the diffusion of unreactable gas, replace throttling effect with this, thereby system need not any mechanical pump and valve; System is a propelling thrust with the thermal source directly, utilizes thermosiphon principle that working medium is circulated continuously, and simple in structure, cost is low.Yet, the spread-absorbing type refrigeration mechanism cold of producing both at home and abroad is generally less than 700Kcal/h at present, can only be used for refrigerator, and it is far from being enough using as air-conditioning, major cause is that the producer design is unreasonable, and the liquefied ammonia amount that arrives evaporator can not increase considerably.

It is thermal source with the waste heat of vehicle engine exhaust gas that the purpose of this utility model provides a kind of, adopts the automobile-used waste heat A/C of diffusion-absorption refrigerating.

The automobile-used waste heat A/C of this spread-absorbing type is made up of heating system and working medium cycle refrigeration system, refrigeration system is refrigerant with ammonia, water is absorbent, unreactable gas is a diffusant, comprise producer, condenser, evaporator, gas heat-exchanger, mixed flow device, resorber and reservoir, wherein producer comprises raising pipe and bead tube; Heating system is made up of the upper and lower two sections thermal accumulators and the heat pipe of interior filling heat carrier, is provided with automobile exhaust pipe in the hypomere thermal accumulator, and the evaporator section of heat pipe and condensation segment insert hypomere and epimere thermal accumulator respectively; Producer is provided with four and the contacted raising pipe of epimere thermal accumulator at least, bead tube is the sinuous coil of three-casing structure, the upper end of each raising pipe is with communicating with a gas-liquid separator, the lower end is with communicating with a fluid balance device, the center of producer has a lower end to communicate with the fluid balance device, the gas piping that the upper end communicates with the gas phase pipe of gas-liquid separator, the inner sleeve of rectifying coil pipe links to each other with the liquid-phase tube of gas-liquid separator, and outer tube and intermediate casing communicate with the gas phase bypass pipe of gas piping.

The said heat pipe of the utility model is a flexible heat pipes, and its adiabatic section is a flexible metal tube, and the used unreactable gas diffusant of refrigeration system is a helium.

The quantity of the utility model raising pipe is increased to more than four by of routine, thereby has increased the lifting capacity of solution in the scope that heat energy allows to greatest extent, provides necessary condition for increasing substantially refrigeration.Owing to change the shape of fine stiller into coil pipe by the straight tube of routine,, make that the ammonia that arrives condenser is more purer, thereby strengthened refrigerating efficiency so under the prerequisite that does not increase overall volume, the conventional bead tube of length of bead tube has been increased more than 3 times.This A/C utilizes the used heat of auto emission to be prime power, has both saved a large amount of energy, can improve working efficiency of internal combustion engine again.

Further specify the utility model example structure and refrigeration principle below in conjunction with accompanying drawing.

Fig. 1 is the system architecture scheme drawing of this automobile-used waste heat A/C.

Fig. 2 is generator architecture figure.

See Fig. 1 and Fig. 2, automobile engine exhaust pipe 13 passes from hypomere thermal accumulator 101, make the heat medium oil temperature build-up in the hypomere thermal accumulator, by flexible heat pipes heat delivery is arrived epimere thermal accumulator 102, the evaporator section 2 of heat pipe and condensation segment 2 ' insert respectively in the heat medium oil of thermal accumulator 101 and 102, adiabatic section shell 201 adopts flexible metallic material.See Fig. 2, producer is provided with six roots of sensation raising pipe 42, raising pipe and epimere thermal accumulator 102 have thermal contact and heat up, and ammoniacal liquor is heated to seethe with excitement and produces bubble in the pipe, borrow the thrust of bubble that the intraluminal fluid face is risen, produce siphonic effect, rising solution arrival gas-liquid separator 41, the ammonia that wherein contains a small amount of water vapor continues to rise, and through gas phase pipe 411, gas piping 43, is arrived the bottom inlet of rectifying dish 44 by gas phase bypass pipe 431, ammonia is with the coil pipe rising of spiraling, at last from exporting 441 condensers 6 that remove Fig. 1.In the ammonia uphill process, it is separated that institute's moisture vapor and little ammonia chance tube wall are condensed into dilute ammonia solution, flow into the bottom 434 of gas piping 43 downwards, gas piping bottom 434 communicates with fluid balance device 45, in contain the dilute ammonia solution of certain altitude, when liquid level rises to liquid phase bypass pipe 432 height, then overflow in the reservoir 11 of flow graph 1 by pipe 432.Fluid balance device 45 is used for each raising pipe liquid level of balance.Besides the bottom of gas-liquid separator 41 is isolated spiral the rise mixed flow device 9 that passes Fig. 1 by the outlet of inner sleeve 443 of the inner sleeve that feeds the rectifying coil pipes through liquid-phase tube 412 from bypass pipe 431 based on the dilute ammonia solution of water and is entered the upper entrance A of resorber 10 among Fig. 2, and the intermediate casing 442 of rectifying coil pipe communicates with the outlet at bottom B of Fig. 1 mixed flow device 9.

Refrigeration principle is seen Fig. 1, the ammonia that producer 4 produces is gone into condenser 6 by pipe 441, liquefy under the condensing pressure of ammonia in condenser, converge with ammonia helium gas mixture body at the inlet C place of evaporator 7 and enter evaporator, though the interior stagnation pressure of evaporator this moment still is a condensing pressure based on helium from resorber 10, but because the diffusion of helium, make ammonia branch drops, according to dalton's law of partial pressure, the dividing potential drop of ammonia is less than stagnation pressure, liquefied ammonia is evaporated, and produces refrigeration effect.Ammonia helium gas mixture body after the liquefied ammonia evaporation is flowed out by the evaporator bottom, reclaim cold after mixed flow device 9 by gas heat-exchanger 8, gas is gone into resorber 10 by the D place, the liquid strong aqua is removed producer rectifying coil pipe by the B place intermediate casing 442 is reverse and go with the weak aqua ammonia of inner sleeve, after carrying out interchange of heat, feed back tracheae bottom 434, participate in recirculation to raising pipe by balancing device.Spiral by the A place of resorber 10 from the dilute ammonia solution of aforementioned rectifying coil pipe inner sleeve 433 and to flow downward, and enter the rising of spiraling of resorber 10 ammonia helium gas mixtures by the D place, the two meets in the process, ammonia in the miscellaneous gas is absorbed by dilute ammonia solution gradually, making weak aqua ammonia become concentrated ammonia solution goes rectifying coil pipe intermediate casing to participate in recirculation through mixed flow device 9 by the B place by the D place, and in the resorber in the uprising gas helium be purified gradually, overflow resorber at last, go into and go to the C place to go into evaporator after gas heat-exchanger 8 is lowered the temperature.Communicate with resorber on the reservoir 11, make to rise in the resorber 10 to participate in gas circulation from the small amount of residual helium in the producer ammonia solution.In the utility model, the inside pipe wall of evaporator 7 is processed into the looping snail spin slot.

In the present embodiment, condenser 7 places in the compartment 5, and all the other each several parts all place outside the compartment.

Claims (3)

1, the automobile-used waste heat A/C of spread-absorbing type, form by heating system and working medium cycle refrigeration system, refrigeration system is refrigerant with ammonia, water is absorbent, unreactable gas is a diffusant, comprise producer 4, condenser 6, evaporator 7, gas heat-exchanger 8, mixed flow device 9, resorber 10 reservoirs 11, wherein producer 4 comprises raising pipe 42 and bead tube 44, it is characterized in that said heating system is by on the interior filling heat carrier, following two sections thermal accumulators and heat pipe are formed, be provided with automobile exhaust pipe 13 in the hypomere thermal accumulator 101, the evaporator section 2 of heat pipe and condensation segment 2 ' insert respectively hypomere and epimere thermal accumulator 101,102; Said producer is provided with four and the contacted raising pipe 42 of epimere thermal accumulator at least, bead tube 44 is sinuous coils of three-casing structure, the upper end of each raising pipe is with communicating with a gas separator 41, the lower end is with communicating with a fluid balance device 45, the center of producer has a lower end to communicate with the fluid balance device, the gas piping 43 that the upper end communicates with the gas phase pipe of gas-liquid separator, the inner sleeve 443 of rectifying coil pipe 44 links to each other with the liquid-phase tube 411 of gas-liquid separator, and outer tube 441 and intermediate casing 442 communicate with the gas phase bypass pipe 431 of gas piping 43.

2, diffusion according to claim 1---absorption automobile-used waste heat A/C is characterized in that said heat pipe 2 is flexible heat pipes, and its adiabatic section 201 is a flexible metal tube.

3, diffusion according to claim 1---absorption automobile-used waste heat A/C, the unreactable gas diffusant that it is characterized in that refrigeration system is a helium.

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