CN2243632Y - High performance absorbing refrigerator - Google Patents

Abstract

The utility model discloses a high performance absorbing refrigerator, which is characterized in that heat transmission devices (101 to 104) are suitably used in match with more than one of the generators (31, 41, 51), condensers (32, 42, 52), evaporators (33, 43, 53), and absorbers (34, 44, 54) of the absorbing refrigerator. In particular, the refrigerating end of the device (101) is arranged in the generators, and the heating end of the device is connected to heat source. The heating ends of the device (102, 103) are respectively arranged in the condensers and absorbers, and the refrigerating ends are connected to heat releasing devices. The refrigerating ends of the device (104) are arranged in the evaporators, and the heating ends are connected to cold releasing devices.

Description

A kind of high-efficiency absorption refrigeration machine

The utility model relates to a kind of Absorption Refrigerator that adopts high-efficiency heat transfer device.

Existing Absorption Refrigerator, for example lithium-bromide absorption-type refrigerating machine or ammonia-water absorption refrigerating machine, mostly adopting water is heat transferring medium, realizes heat and/or cold transmission between refrigerating plant and the surrounding environment.Because the restriction of waterway pipe, the general occupation of land of existing Absorption Refrigerator is bigger, is difficult to miniaturization, especially is difficult to be applied on the telecontrol equipments such as car, ship.

The purpose of this utility model provides a kind of high-efficiency absorption refrigeration machine, it can utilize phase change mediums such as freon, realize the heat between refrigerating plant and the surrounding environment (atmosphere) and/or the direct transmission of cold efficiently, thereby cancelled waterway pipe, realize high efficiency, the miniaturization of this refrigeration machine, and can further this refrigeration machine be applied on the telecontrol equipments such as car, ship, utilize the used heat of its discharge, to car, ship refrigeration cooling.

The purpose of this utility model reaches by following technical solution:

High-efficiency heat transfer device is adapted at least one among generator, condenser, absorber and the evaporimeter of suction formula refrigeration machine, thereby realize the high efficiencies of heat transfer between refrigeration machine and the surrounding environment (atmosphere).

The utility model has the advantages that significantly.Because complicated waterway pipe is replaced by high-efficiency heat transfer device whole or in part, the volume of whole refrigeration machine reduces, and cost reduces, and heat transfer efficiency improves greatly, has realized that refrigeration machine directly and the heat exchange of atmosphere.And and then also refrigeration machine can be installed in the telecontrol equipments such as car, ship, economic benefit is very considerable.

Below in conjunction with accompanying drawing the utility model is elaborated:

Fig. 1 is the schematic diagram of high-efficiency heat transfer device;

Fig. 2 is existing lithium-bromide absorption-type refrigerating machine organigram;

Fig. 3 is the dual effect type lithium-bromide absorption-type refrigerating machine organigram that high-efficiency heat transfer device is housed;

Fig. 4 is the lithiumbromide absorption refrigerating machine with bubble pump organigram that high-efficiency heat transfer device is housed;

Fig. 5 is the ammonia-water absorption refrigerating machine organigram that high-efficiency heat transfer device is housed.

Among Fig. 1, with the whole high-efficiency heat transfer device of label 10 representatives. Label 1,2 is shown respectively Show its fire end and colling end, 3 is middle carrier pipe, and 4 is style one-way flow valve, and they altogether With the heat transfer loop that consists of sealing, but be filled with phase change medium in the loop, such as freon etc. As long as there is the temperature difference in cold and hot end, then can produce the phase transformation of medium in this heat transfer unit (HTU) 10, the companion Along with the generation of latent heat, can cause high heat transfer efficiency. About this high-efficiency heat transfer device 10 concrete structure and the course of work can be referring to the applicant in CN95211508.5 To its detailed description of doing. It is open as a part of the present utility model.

Below, be specific embodiment with lithium bromide type and ammonia-water type, high-efficiency absorption refrigeration machine of the present utility model is described.

Fig. 2 is existing lithium-bromide absorption-type refrigerating machine organigram.Label 20 is represented refrigeration machine integral body.21 is generator, and 22 is condenser, and 23 is evaporimeter, and 24 is absorber.The 25th, delivery pump, 26,27 is heat exchanger.As can see from Figure 2, the heat that produces in condenser 22 and the absorber 24 is taken refrigeration machine 20 out of by cooling water; And the cold that produces in the evaporimeter 23 is also taken refrigeration machine 20 out of by WATER AS FLOW MEDIUM.Like this, establish complicated water lines at the right-hand need of Fig. 2.In addition, generator 21 is obtained heat by pipeline from extraneous thermal source.

Fig. 3 illustrates dual effect type lithium-bromide absorption-type refrigerating machine of the present utility model.Wherein, 30 expression refrigeration machine integral body, 31-34 represents generator, condenser, evaporimeter and absorber wherein respectively.351-353 is a delivery pump, and 36,37 is heat exchanger.

High-efficiency heat transfer device shown in Figure 1 10 is adapted to generator 31, condenser 32, evaporimeter 33 and the absorber 34 of refrigeration machine 30 respectively.Particularly, with the colling end of high-efficiency heat transfer device 101 generator 31 of packing into, be heated end and be connected in thermal source 381, it can be internal-combustion engine vent-pipe, boiler chimney etc.; The fire end of high-efficiency heat transfer device 102,103 is respectively charged into condenser 32, absorber 34, its colling end is adapted to hot vaporizer 383; With the colling end of high-efficiency heat transfer device 104 evaporimeter 33 of packing into, be heated end and adapt to cold vaporizer 382.Cold and hot vaporizer 382,383 places with cold or use heat space, directly and air carry out heat exchange, cancelled waterway pipe of the prior art.

The working cycles of refrigeration machine 30 is as follows: high-efficiency heat transfer device 101 obtains heat from 381, pass to generator 31, bromizate lithium solution and be heated and produce high temperature water as refrigerant steam, this steam is given the heating of the solution in the container 39 downwards by pipeline, and itself is lowered the temperature, to condenser 32, together with the cryogenic coolant water vapour that produces in 39 together, cooled off, be condensed into water as refrigerant by high-efficiency heat transfer device 102, emit heat, brought to hot vaporizer 383 by 102 and dissipate; The water as refrigerant that condenses splashes into downwards in 32 the water pond, spill through coiling the aperture leakage, and by the colling end of the high-efficiency heat transfer device 104 of pump 353 pressurization spray in evaporimeter 33, absorb heat, the cold water as refrigerant steam that is evaporated to, make 104 interior phase change medium coolings and cold is passed to cold vaporizer 382, produce refrigeration.

On the other hand, because the water as refrigerant steam raising, the lithium-bromide solution in 31 is concentrated, and by pipeline heat exchanger 36 coolings of flowing through, and further concentrates in 39, enters absorber 34 through heat exchanger 37.By pump 351 pressurizations, the lithium-bromide solution that concentrates spray is at the fire end of being located at the efficient changing device 103 in 34, because it absorbs the water as refrigerant steam in 34 consumingly, solution is thinning and emit heat, and this heat is brought to hot vaporizer 383 by 103 and dissipates.Weak solution in 34 upwards is heated through heat exchanger 37,36 by pump 352 pressurization, is sent to generator 31 evaporation and concentration of being heated again, forms and circulates.Like this, we just can obtain cold at 382 places by 104; Obtain heat by 102,103 at 383 places.

Fig. 4 is the structural map of lithiumbromide absorption refrigerating machine with bubble pump of the present utility model, and its integral body is with 40 expressions.41-44 represents generator, condenser, evaporimeter and the absorber of refrigeration machine 40 respectively.In the similar mode of Fig. 3, respectively high-efficiency heat transfer device 101-104 is fitted into 41-44.

The working cycles of the refrigeration machine of this form is as follows: high-efficiency heat transfer device 101 obtains heat from 481, passing to generator 41 vaporizes lithium-bromide solution wherein, steam bubble is carrying concentrated solution and is entering a vapor-liquid separation chamber 45, vapour rises, enter condenser 42, be cooled to water as refrigerant by high-efficiency heat transfer device 102, its heat is passed to hot vaporizer 483, water as refrigerant enters an expanding chamber 49 then, drip again on the high-efficiency heat transfer device 104 of pouring in evaporimeter 43, absorb 104 interior heats and the cold water as refrigerant steam that is evaporated to, and obtain refrigeration effect at 104 cold vaporizer 482 places.Remaining water enters a mixing chamber 48 downwards to be mixed with weak solution, emits heat, gets back to generator 41.

On the other hand, concentrated lithium-bromide solution in the vapor-liquid separation chamber 45 enters absorption chamber 44 after entering heat exchanger 46 coolings downwards by pipeline, drip the fire end that drenches at high-efficiency heat exchanger 103, water as refrigerant steam in the concentrated solution strong absorption 44, thinning and emit heat, take hot vaporizer 483 out of by 103, weak solution enters heat exchanger 46 by pipeline, get back to generator 41 after the intensification, form a circulation.Like this, we just can obtain cold at 482 places by 104; Obtain heat by 102,103 at 483 places.

Fig. 5 illustrates ammonia water absorbing refrigerator of the present utility model.Its integral body is with 50 representatives.51-54 is its generator, condenser, evaporimeter and absorber.With Fig. 3,4 similar methods high performance refrigerating unit 101-104 is assembled to refrigeration machine 50.

The working cycles of this refrigeration machine 50 is as follows:

By high-efficiency heat transfer device 101, the heat that thermal source 581 places are obtained imports generator 51 into, makes the ammonia spirit heating, forms ammonia steam.The ammonia steam rises and to purify by a distiller 57, enters condenser 52 after forming dense ammonia, and its heat is passed to high-efficiency heat transfer device 102, dissipate through its hot vaporizer 583, and dense ammonia becomes liquid in 52, and downwards through a heat exchanger 59, temperature reduces, enter evaporimeter 53 through throttling for 510, because pressure reduces, rapid evaporation produces cold, pass to its cold vaporizer 582 through high-efficiency heat transfer device 104, produce refrigeration effect.The ammonia of the finishing refrigeration effect heat exchanger 59 of upwards flowing through enters absorber 54 afterwards.The weak solution of ammonia is downward through heat exchanger 56 and from the concentrated solution heat exchange the absorber 54 from generator 51, after enter absorber 54 after another choke valve 510 step-downs, reuptake the ammonia steam and form concentrated solution, and emit heat, spread out of its hot vaporizer 583 by high-efficiency heat transfer device 103.

On the other hand, solution pump 55 upwards is sent to heat exchanger 56 to the dense ammoniacal liquor in 54, and then upwards sends into generator 51, forms a circulation.Like this, we just can obtain cold by 104 at 582 places, obtain heat at 583 places by 102,103.

From top embodiment as can be seen, owing to utilized high-efficiency heat transfer device, be accompanied by medium phase transformation wherein, latent heat takes place, caused high heat transfer efficiency, realize the heat of refrigerating device inner generation and/or the direct heat transfer of cold and surrounding air, thereby cancelled waterway pipe complicated in original Absorption Refrigerator.

Among the above embodiment, generator, condenser, evaporimeter and absorber are all adaptive high-efficiency heat transfer device, but in actual applications can be as required, and is adaptive selectively.

In the foregoing description, thermal source 381,481 or 581 can be from car and boat institute waste discharge heat, by with the refrigeration machine miniaturization, thereby is applied on the telecontrol equipments such as car and boat.Certainly, thermal source also can by supplying with big heat, produce big refrigerating capacity, thereby make Absorption Refrigerator of the present utility model also can be used as central air conditioning efficiently, to a plurality of spatial concentration coolings from boiler or burner etc.

More than be the embodiment of several high-efficiency absorption refrigeration machines, the utility model also can have multiple variation, and its protection domain is embodied in the appended claims.

Claims (2)

1. high-efficiency absorption refrigeration machine (30,40,50), comprise existing Absorption Refrigerator, it is characterized in that, high-efficiency heat transfer device is adapted to the generator (31 of this refrigeration machine, 41,51), condenser (32,42,52), evaporimeter (33,43,53) and absorber (34,44,54) at least one among, particularly, with the colling end of high-efficiency heat transfer device (101) generator (31 of packing into, 41,51), be heated end and be connected in thermal source (381,481,581), with high-efficiency heat transfer device (102,103) fire end is respectively charged into condenser (32,42,52) absorber (34,44,54), its colling end is adapted to hot vaporizer (383,483,583), with the colling end of high-efficiency heat transfer device (104) evaporimeter (33 of packing into, 43,53), be heated end and adapt to cold vaporizer (382,482,582).

2. according to the Absorption Refrigerator (30,40,50) of claim 1, it is characterized in that the thermal source of this refrigeration machine (381,481,581) comes from institute's heating loads such as boiler, burner, or come from car, ship institute waste discharge heat.

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