CN100380069C

CN100380069C - Absorption refrigerator

Info

Publication number: CN100380069C
Application number: CNB038246740A
Authority: CN
Inventors: 井上修行
Original assignee: Ebara Corp
Current assignee: Ebara Corp
Priority date: 2002-09-27
Filing date: 2003-06-25
Publication date: 2008-04-09
Anticipated expiration: 2023-06-25
Also published as: CN1695033A

Abstract

An auxiliary regenerator and an auxiliary absorber are added to a triple effect absorption refrigerator. Dilute solution from an absorber is condensed by the auxiliary regenerator so as to produce refrigerant vapor, and the auxiliary absorber is made to absorb the vapor. Alternatively, the dilute solution from the absorber is introduced to the auxiliary absorber and to a low temperature regenerator and the auxiliary regenerator where the solution is heated and condensed. Refrigerant vapor generated in the auxiliary regenerator is absorbed by the auxiliary absorber. Providing an auxiliary regenerator and an auxiliary absorber enables to have an intermediate cycle between a dual effect and a triple effect absorption refrigerator, and pressure and solution temperature in a high temperature regenerator can be prevented from rising excessively.

Description

Absorption refrigerating machine

Technical field

The present invention relates to triple effectiveness absorption refrigerating machines, particularly, relate to the pressure that can relax high-temp regenerator and triple effectiveness absorption refrigerating machines of solution temperature.

Background technology

As the prior art example of the absorption refrigerating machine that utilizes circulation of double effectiveness or the circulation of triple effectiveness, there is the spy to open flat 7-146023 communique, the spy opens flat 8-136080 communique, special public clear 56-48782 communique, special public clear 58-33467 communique, No. 2657703 communique of special permission, No. 2696575 disclosed example of communique of special permission.

Under the situation of triple effectiveness circulations, when the temperature of cooling water when higher (for example, standard value in summer of Japan, the cooling water inlet is 31～32 ℃), the pressure of high-temp regenerator is about 0.3MPa with the gauge pressure, solution temperature becomes the high temperature above 190 ℃, angle from intensity and reply corrosion, do not adopt common general structure carbon steel material, be necessary to adopt advanced material, aspect the commercialization of triple effectiveness equipment, exist the problem that cost increases, rest on double effectiveness circulation mostly.

Someone proposed following scheme, promptly, reduce at cooling water temperature, the high-temp regenerator pressure of triple effectiveness circulations, for example can become to below the gauge pressure 0.1MPa, solution temperature can become under the situation below about 175 ℃, switches to triple effectiveness from double effectiveness, in the hope of raising the efficiency (specially permit communique No. 2657703, specially permit No. 2696575 communique etc.).

Efficient changes between double effectiveness and triple effectiveness quite sharp.Under triple effectiveness circulate invalid situation, drop to the efficient of double effectiveness circulation sharp, the efficient in the middle of being difficult to obtain.

The present invention is in view of above-mentioned prior art, its problem is, a kind of triple effectiveness absorption refrigerating machine is provided, this refrigerator can carry out the middle circulation of double effectiveness and triple effectiveness, the pressure or the solution temperature of high-temp regenerator are in below the setting, and then, according to the temperature conditions of heat source temperature, cooling water or cold water temperature condition etc., continuously rather than steppedly change to triple effectiveness circulations from the circulation of centre.

The content of invention

In order to solve above-mentioned problem, first aspect of the present invention, has high-temp regenerator, in warm regenerator, low-temperature regenerator, condenser, absorber, evaporimeter, auxiliary regenerator, auxilliary absorber and connecting in triple effectiveness absorption refrigerating machines in path of these machines, it is characterized in that, described refrigerator comprises: make solution at aforementioned absorber, aforementioned auxiliary regenerator, warm regenerator in aforementioned, and the high concentration circulating path that circulates between the aforementioned high-temp regenerator, the low concentration circulating path that solution is circulated between aforementioned auxilliary absorber and low-temperature regenerator, and, comprise: the refrigerant vapour that will take place in aforementioned auxiliary regenerator is directed to the path in the aforementioned auxilliary absorber, the refrigerant vapour that will take place in the warm regenerator in aforementioned is directed to the path of the heated side of the heated side of aforementioned low-temperature regenerator and auxiliary regenerator, and the refrigerant vapour that will in aforementioned high-temp regenerator, take place be directed to aforementioned in the path of heated side of warm regenerator.

In aforementioned triple effectiveness absorption refrigerating machines, the mechanism that the function stop that makes aforementioned auxiliary regenerator and/or aforementioned auxilliary absorber can be set or make it to bring into play function.

In addition, according to a second aspect of the invention, has high-temp regenerator, in warm regenerator, low-temperature regenerator, condenser, absorber, evaporimeter, auxiliary regenerator, auxilliary absorber and connecting in triple effectiveness absorption refrigerating machines in path of these machines, it is characterized in that, described refrigerator comprises: the part that will come from the weak solution of aforementioned absorber is directed to aforementioned auxilliary absorber, make the rest solution of not exporting to auxilliary absorber at absorber simultaneously, the path of circulating between the warm regenerator during high-temp regenerator reaches, the weak solution of aforementioned auxilliary absorber is directed to the path of aforementioned low-temperature regenerator, make the solution of aforementioned low-temperature regenerator turn back to the path of aforementioned absorber via aforementioned auxiliary regenerator, the refrigerant vapour that will take place in aforementioned auxiliary regenerator is directed to the path in the aforementioned auxilliary absorber, and, comprise: the refrigerant vapour that will take place in the warm regenerator in aforementioned is directed to the path of the heated side of aforementioned low-temperature regenerator and auxiliary regenerator, the refrigerant vapour that will in aforementioned high-temp regenerator, take place be directed to aforementioned in the path of heated side of warm regenerator.

In according to the triple effectiveness absorption refrigerating machines aspect above-mentioned second, the mechanism that the function stop that makes aforementioned auxiliary regenerator and/or aforementioned auxilliary absorber can be set or make it to bring into play function.

In addition, according to a third aspect of the present invention, has high-temp regenerator, in warm regenerator, low-temperature regenerator, condenser, absorber, evaporimeter, auxiliary regenerator, auxilliary absorber and connecting in triple effectiveness absorption refrigerating machines in path of these machines, it is characterized in that, described refrigerator is provided with the mechanism of switching between following each circulation, described circulation is: (a) circulation, this circulation comprises: solution is at aforementioned absorber, aforementioned auxiliary regenerator, warm regenerator in aforementioned, and the high concentration circulating path that circulates between the aforementioned high-temp regenerator, the low concentration circulating path that solution circulates between aforementioned auxilliary absorber and low-temperature regenerator, and form: the refrigerant vapour that will take place in aforementioned auxiliary regenerator is directed to the path in the aforementioned auxilliary absorber, the refrigerant vapour that will take place in the warm regenerator in aforementioned is directed to the heated side of aforementioned low-temperature regenerator and assists the path of the heated side of regenerator, and the refrigerant vapour that will in aforementioned high-temp regenerator, take place be directed to aforementioned in the path of heated side of warm regenerator, (b) circulation, this circulation comprises: the part that will come from the weak solution of aforementioned absorber is directed to aforementioned auxilliary absorber, simultaneously the weak solution of aforementioned auxilliary absorber is directed to the path of aforementioned low-temperature regenerator, make the solution of aforementioned low-temperature regenerator turn back to the path of aforementioned absorber via aforementioned auxiliary regenerator, the refrigerant vapour that will take place in aforementioned auxiliary regenerator is directed to the path in the aforementioned auxilliary absorber, and form: the refrigerant vapour that will take place in the warm regenerator in aforementioned is directed to the path of the heated side of aforementioned low-temperature regenerator and auxiliary regenerator, the refrigerant vapour that will in aforementioned high-temp regenerator, take place be directed to aforementioned in the path of heated side of warm regenerator, (c) circulation, this circulation make aforementioned any one the circulation in auxiliary regenerator and/or the function stop of aforementioned auxilliary absorber.

In aforementioned auxiliary regenerator, the governor motion of increase and decrease heating concentrating capacity can be set.

In addition, in aforementioned auxilliary absorber, the governor motion of increase and decrease absorbability can be set.

In addition, the governor motion of increase and decrease heating concentrating capacity can be set in aforementioned auxiliary regenerator, and the governor motion of increase and decrease absorbability is set in aforementioned auxilliary absorber.

Can be provided with and have the path that the refrigerant vapour that will take place is directed to the cap relief valve in the regenerator of the low one-level of pressure in aforementioned high-temp regenerator and/or middle temperature regenerator.

In addition, solution with aforementioned high concentration circulating path can be set is directed in the aforementioned low concentration circulating path, makes the solution suitable with the solution amount that is directed to aforementioned low concentration circulating path from aforementioned high concentration circulating path turn back to the path of aforementioned high concentration circulating path from aforementioned low concentration circulating path.

And then, in the governor motion or aforementioned cap relief valve of the mechanism that aforementioned circulation is switched, the aforementioned heating concentrating capacity of increase and decrease, controlling organization can be set, this controlling organization is regulated the interior pressure and/or the solution temperature of aforementioned high-temp regenerator, or the physical quantity relevant with them, make it to be no more than setting separately.

In addition, according to a fourth aspect of the present invention, has high-temp regenerator, in warm regenerator, low-temperature regenerator, condenser, absorber, evaporimeter, auxiliary regenerator, auxilliary absorber and connecting in triple effectiveness absorption refrigerating machines in path of these machines, it is characterized in that, described refrigerator comprises: solution is at aforementioned absorber, aforementioned auxiliary regenerator, warm regenerator in aforementioned, and the high concentration circulating path that circulates between the aforementioned high-temp regenerator, the low concentration circulating path that solution circulates between aforementioned auxilliary absorber and low-temperature regenerator, and, comprise: the refrigerant vapour that will take place in aforementioned auxiliary regenerator is directed to the path in the aforementioned auxilliary absorber, the refrigerant vapour that will take place in the warm regenerator in aforementioned is directed to the path of the heated side of aforementioned low-temperature regenerator and/or aforementioned auxiliary regenerator, and the refrigerant vapour that will in aforementioned high-temp regenerator, take place be directed to aforementioned in the path of heated side of warm regenerator, in described refrigerator, in aforementioned low-temperature regenerator and/or aforementioned auxiliary regenerator, be provided with and accept to come from outside used heat, the heat-transfer pipe that solution is heated.

In addition, according to a fifth aspect of the present invention, has high-temp regenerator, in warm regenerator, low-temperature regenerator, condenser, absorber, evaporimeter, auxiliary regenerator, auxilliary absorber and connecting in triple effectiveness absorption refrigerating machines in path of these machines, it is characterized in that, described refrigerator comprises: solution is at aforementioned absorber, aforementioned auxiliary regenerator, warm regenerator in aforementioned, and the high concentration circulating path that circulates between the aforementioned high-temp regenerator, the low concentration circulating path that solution circulates between aforementioned auxilliary absorber and low-temperature regenerator, and, comprise: the refrigerant vapour that will take place in aforementioned auxiliary regenerator is directed to the path in the aforementioned auxilliary absorber, the refrigerant vapour that will take place in the warm regenerator in aforementioned is directed to the path of the heated side of aforementioned low-temperature regenerator and aforementioned auxiliary regenerator, and the refrigerant vapour that will in aforementioned high-temp regenerator, take place be directed to aforementioned in the path of heated side of warm regenerator, in described refrigerator, in aforementioned, in the warm regenerator, be provided with and accept to come from outside used heat, the heat-transfer pipe that solution is heated.

In the present invention, in triple effectiveness absorption refrigerating machines, additional auxiliary regenerator and auxilliary absorber form the low circulation of a part of concentration in triple effectiveness circulations, the middle temperature regenerator of the thermal source that becomes them or the steam pressure of high-temp regenerator are reduced.

More particularly, in triple effectiveness absorption refrigerating machines, additional auxiliary regenerator and auxilliary absorber, concentrate part or all of the concentrated solution that is supplied to before the absorber with auxiliary regenerator heating, and be supplied to absorber, the refrigerant vapour that takes place in auxiliary regenerator absorbs in the solution with auxilliary absorber, forms the solution of low concentration.

Because under situation with the low concentration solution of low-temperature regenerator regeneration (concentrating) auxilliary absorber, because the low concentration of solution, boiling temperature reduces, so, becoming the saturated with vapor temperature of middle temperature regenerator of thermal source and the solution boiling temperature of the middle temperature regenerator that accompanies therewith reduces, thereby the saturated with vapor temperature of the high-temp regenerator of the thermal source of warm regenerator reduces in becoming, and can reduce necessary heat source temperature in the solution boiling temperature of high-temp regenerator and the high-temp regenerator.

Promptly, the circulation of additional auxiliary regenerator and auxilliary absorber, dual system circulation by low concentration circulation and high concentration circulation constitutes, the high concentration circulation side, absorb the refrigerant vapour that comes from evaporimeter with absorber, become the driving force that produces refrigerating effect, on the other hand, low concentration circulates, and becomes to prevent that the high concentration circulation from becoming the auxiliary circulation of high temperature, high pressure.

Be supplied to the solution of auxiliary regenerator, also can be by absorber or middle temperature regenerator or high-temp regenerator supply.In addition, the solution of auxiliary regenerator also can return absorber via middle temperature regenerator or high-temp regenerator or via both.In a word, as long as auxiliary regenerator enters in the high concentration circulation.

Be configured in auxiliary regenerator in the high concentration circulation with solution concentration, still, the refrigerant vapour that takes place in auxiliary regenerator does not lead to condenser, is absorbed by the auxilliary absorber of the pressure than condenser lower (low dew point).The solution of the auxilliary absorber of absorption refrigeration agent steam is low concentration, under the situation of utilizing low-temperature regenerator with its regeneration (concentrating), can concentrate in lower temperature, refrigerant vapour directly can be released in the condenser.By additional this low concentration circulation, can reduce the dew point of the steam that the middle temperature regenerator of high concentration side produced, whereby, can force down the vapour pressure of the cold-producing medium that adds the high-temp regenerator of pining for warm regenerator.

Above-mentioned purpose of the present invention and other purpose will become apparent by the following examples of describing together with accompanying drawing.

Description of drawings

Fig. 1 is the flow passage structure figure of an example of expression absorption refrigerating machine of the present invention.

Fig. 2 is the flow passage structure figure of the another one example of expression absorption refrigerating machine of the present invention.

Fig. 3 is the flow passage structure figure of the example of another one again of expression absorption refrigerating machine of the present invention.

Fig. 4 (a) and (b) are difference diagrams of the flow passage structure figure of presentation graphs 1, Fig. 2 simplifiedly.

Fig. 5 (a)～Fig. 5 (f) is in the stream of Fig. 3, Du Lin (the D ü hring) line chart of the circulation change when making the capacity variation of assisting regenerator GX.

Fig. 6 (a) is Du Lin (the D ü hring) line chart of the solution circulation of Fig. 1, and Fig. 6 (b) is Du Lin (the D ü hring) line chart of the circulation when auxilliary absorber AX that does not have Fig. 1 and auxiliary regenerator GX.

Fig. 7 is the curve map of relation of the taphole temperature of the refrigerant vapour saturation temperature of expression auxilliary absorber AX and auxiliary regenerator GX and COP and high-temp regenerator GH.

Fig. 8 (a), Fig. 8 (b) can use Du Lin (the D ü hring) line chart that other solution of the present invention circulates.

Fig. 9 is the flow passage structure figure of example of the another one again of expression absorption refrigerating machine of the present invention.

Figure 10 is the list of the example of the expression circulation pattern of using triple effectiveness absorption refrigerating machines of the present invention.

The specific embodiment

Below, with reference to the preferred implementing form of description of drawings according to absorption refrigerating machine of the present invention.

An example of the present invention, reach shown in the Fig. 4 (a) that represents its flow passage structure figure briefly as Fig. 1, solution recycle system, by: the main low concentration solution circulatory system that between auxilliary absorber AX and low-temperature regenerator GL, circulates, the main highly concentrated solution circulatory system that circulates between absorber A, high-temp regenerator GH, middle temperature regenerator GM constitutes, even the temperature of cooling water, also can be forced down pressure (cold-producing medium saturation temperature) and the solution temperature of high-temp regenerator GH than higher.

In addition, other example of the present invention, reach shown in the Fig. 4 (b) that represents its flow passage structure figure briefly as Fig. 2, make auxilliary absorber AX and auxiliary regenerator GX enter in the same circulatory system, carry out turning back to through auxilliary absorber AX, low-temperature regenerator GL, auxiliary regenerator GX the solution circulation of absorber A from absorber A, simultaneously, regulate the heating efficiency of auxiliary regenerator GX.On the other hand, solution also circulates between absorber A, high-temp regenerator GH, middle temperature regenerator GM.It is the circulation of adopting under a kind of situation when cooling water reduces.In addition, in Fig. 4 (a), Fig. 4 (b), solid line is represented flow of solution, and dotted line is represented refrigerant vapour stream.

The circulation of earlier figures 1 and Fig. 2, can use the table apparatus of Fig. 3, realize by solution distributor gear V3, the V4 (, then being equal to switching) of the regulator solution circulatory system and heating efficiency governor motion V1, the V2 of the auxiliary regenerator GX of adjusting if the flow that makes is zero.

Regulate by carrying out these continuously, the continuous variation of circulation becomes possibility, and adjustment that can circulate and control are so that be suppressed at the pressure of high-temp regenerator or the temperature of solution below the target temperature.

Temperature at cooling water too uprises, in the time of in these circulations, can not adapting to, be directed to the regenerator of low one-level by refrigerant vapour with the regenerator of hiigh pressure stage, the running that is equivalent to double effectiveness can be become, the pressure or the solution temperature of high-temp regenerator can be forced down.

In addition, in the present invention, aforementioned absorber zone is divided into low-pressure absorber and high pressure absorber, the aforementioned evaporation device is distinguished into low pressure evaporator and high pressure evaporator, cold water is imported high pressure evaporator earlier, to carry out overcooled cold water and then be directed to low pressure evaporator, simultaneously, the concentrated solution that will come from aforementioned regenerator is directed to low-pressure absorber earlier, make it to absorb the refrigerant vapour that comes from low pressure evaporator, the solution that will absorb refrigerant vapour in low-pressure absorber is directed to high pressure absorber, makes it to absorb the refrigerant vapour that comes from high pressure evaporator, by absorber and evaporimeter are made two-stage, the solution concentration of circulation is reduced, and the pressure of reduction high-temp regenerator, temperature, so, can make the present invention become more effective.

And then, describe form of implementation of the present invention with reference to the accompanying drawings in detail.

Fig. 1～Fig. 3 is the flow passage structure figure of expression triple effectiveness absorption refrigerating machines of the present invention.

In Fig. 1～Fig. 3, E is an evaporimeter, and A is an absorber, C is a condenser, and GL is a low-temperature regenerator, and GM is middle temperature regenerator, GH is a high-temp regenerator, AX is an auxilliary absorber, and GX is auxiliary regenerator, and XL1, XL2 are low-temperature side heat exchangers, XM is middle wen-side heat exchanger, XH is a h, and SP1, SP2 are solution pumps, and RP is a refrigerated medium pump, V1～V5 is a control valve, 1～8th, solution stream, the 9th, U font pipe arrangement, 10～13rd, refrigerant vapour stream, 14～16th, refrigerant flow path, the 17th, thermal source, the 18th, cold water, the 19th, cooling water.

Utilize Fig. 1 that the present invention is described, the refrigerant vapour that takes place when heating concentrated solution with auxiliary regenerator GX with auxilliary absorber AX absorption.

The weak solution of auxilliary absorber AX is directed to low-temperature regenerator GL from stream 7, heats concentratedly with the refrigerant vapour that passes through

stream

12,13 of warm regenerator GM in coming from, turn back to auxilliary absorber AX.The refrigerant vapour that takes place in low-temperature regenerator GL is with condenser C condensation, from stream 15 Returning evaporimeter E.The weak solution of absorber A, respectively from stream 1 be sent to auxiliary regenerator GX, warm regenerator GM, high-temp regenerator GH.

Be sent to the solution of auxiliary regenerator GX, by among the warm regenerator GM refrigerant vapour heating that take place, that come from

stream

12,13 concentrate, the solution of warm regenerator GM in being sent to, that taken place among the high-temp regenerator GH, concentrated from the refrigerant vapour heating of stream 11, on the other hand, be sent to the solution of high-temp regenerator GH, concentrate with external heat source 17 heating.The solution that is concentrated returns absorber A from

stream

2,3,4 by stream 5,6 respectively, absorbs the refrigerant vapour that comes from evaporimeter.

Fig. 6 (a) is the diagram of this circulation of expression on Du Lin (D ü hring) line chart.

The refrigerant vapour that in high-temp regenerator GH, takes place, CH with Fig. 6 (a) under saturation state represents, the heating source of warm regenerator GM in becoming, the refrigerant vapour that takes place in middle temperature regenerator GM, the CM with Fig. 6 (a) under saturation state are represented, become the heating source of low-temperature regenerator GL and auxiliary regenerator GX, and condensation, be directed in the condenser C and in low-temperature regenerator GL, take place, condensed refrigerant is directed to evaporimeter E together in condenser C.

Fig. 6 (b) is the diagram of the situation when auxilliary absorber AX and auxiliary regenerator GX are removed in expression on Du Lin (D ü hring) line chart,, represents the diagram of triple effectiveness circulations that is.

Compare with Fig. 6 (b), in Fig. 6 (a), because the solution concentration of low-temperature regenerator GL is low, boiling temperature reduces, so final, the saturated with vapor temperature of high-temp regenerator GH descends, the boiling temperature of the solution of high-temp regenerator GH reduces.The outlet solution temperature of high-temp regenerator GH differs more than 20 ℃.

The switching of the circulation of the circulation of above-mentioned Fig. 6 (a) and Fig. 6 (b), thus the function that can bring into play/stop auxiliary regenerator GX by the cap relief valve V1 that opens and closes Fig. 1 is carried out.Perhaps, described switching also can whereby, to auxiliary regenerator GX supply/stop supplies solution, be brought into play/be stopped the function of auxiliary regenerator GX and carry out by opening and closing the solution supply control valve V2 of Fig. 1.

In addition, by regulating the valve opening of these cap relief valves V1 or solution supply control valve V2, can regulate the heating efficiency of auxiliary regenerator GX.

In addition, though do not illustrate among the figure,, lead to the cooling water inflow of auxilliary absorber AX by adjusting, perhaps regulate solution supply to auxilliary absorber AX, also can regulate the absorbability (comprising its function stop) of auxilliary absorber AX.

And then, adjusting by cap relief valve V1 and/or solution supply control valve V2, lead to cooling water inflow or the solution supply of auxilliary absorber AX with adjusting, can regulate the heating efficiency of auxiliary regenerator GX and auxilliary absorber AX absorbability (comprising its function stop) both.

In Fig. 2, the part that will come from the weak solution of absorber A is sent to auxilliary absorber AX, warm regenerator GM and high-temp regenerator GH during remainder is sent to.In auxilliary absorber AX, absorb the refrigerant vapour when using auxiliary regenerator GX to heat concentrated solution from stream 10, dilution more becomes.This weak solution, from stream 7, in low-temperature regenerator GL, the quilt therefrom next refrigerant vapour heating of passing through

stream

12,13 of warm regenerator GM concentrates, then, just be directed to auxiliary regenerator GX, concentrated from the further heating of the refrigerant vapour that passes through

stream

12,13 of middle temperature regenerator GM.

The weak solution of warm regenerator GM in being sent to from stream 1, with from high-temp regenerator GH, refrigerant vapour by stream 11 as thermal source, be heated concentrated, be sent to the weak solution of high-temp regenerator GH, concentrated by thermal source 17 heating from the outside, just the concentrated solution that is concentrated in auxiliary regenerator GX is sent to absorber A from stream 6 together, absorbs the refrigerant vapour of flash-pot E.

In the absorption refrigerating machine of Fig. 2, also same with the absorption refrigerating machine of Fig. 1, by regulating the switching of cap relief valve V1, can assist the switching of the performance of the function of regenerator GX/stop, and the adjusting heating efficiency.In addition, by regulating to the cooling water inflow of auxilliary absorber AX supply or the supply of solution, the absorbability (comprising stopping of function) that can regulate auxilliary absorber AX.

Fig. 3 is the flow passage structure figure of the further another one example of expression absorption refrigerating machine of the present invention, utilizes solution distributor gear valve V3, V4 (perhaps by the switching by valve), can realize the circulation of Fig. 1 and Fig. 2 with a table apparatus.In addition, do not switch fully, middle circulation also is possible.That is,, also can constitute circulation even in from 0 to 100% scope, distribute solution continuously.In the circulation of centre, by valve V3, part from the weak solution of absorber A flows to auxilliary absorber AX, rest parts is distributed to auxiliary regenerator GX, the weak solution of auxilliary absorber AX is sent to low-temperature regenerator GL and concentrates, by valve V4, the part of concentrated solution is returned auxiliary regenerator GX, rest parts is returned auxilliary absorber AX.That is,, to auxiliary regenerator GX, return the solution (absorbent is substantially the same amount) of the amount suitable with the solution amount that is sent to auxilliary absorber AX from absorber A from low-temperature regenerator GL in order to keep the balance of whole solution recoverable amount.Because only by distributing the balance that is difficult to obtain recoverable amount by valve V3, V4, so, in Fig. 3, connecting the bottom of absorber A and the bottom of auxilliary absorber AX with the pipe arrangement 9 of U font, the one side difference one side that keep-ups pressure allows coming and going of solution, obtains balance.

In addition, valve V3, V4 can not be triple valves also, but the combination of two-way valve etc.

In addition, as will be described, except that the switching of the circulation of carrying out Fig. 1 and Fig. 2 by solution distributor gear valve V3, V4, can also be further by regulating the switching of cap relief valve V1 and/or solution supply control valve V2, regulate the heating efficiency of auxiliary regenerator GX, and then, can also carry out the circulation of circulation, Fig. 2 at Fig. 1 and stop switching between triple effectiveness circulations of function of auxiliary regenerator GX and auxilliary absorber AX.

In addition,, also the solution of the high concentration circulatory system can be directed in the low concentration circulatory system,, the solution of the low concentration circulatory system be returned in the high concentration circulatory system for balance with it for fear of the abnormal pressure of high-temp regenerator GH.For this reason, it is contemplated that various piping systems, for example, with solution distributor gear valve V3 in the future the solution of self-absorption device A (the high concentration circulatory system) spread among the auxilliary absorber AX (the low concentration circulatory system), with U font pipe arrangement 9 solution of auxilliary absorber AX is turned back among the absorber A.

Fig. 5 (a)～Fig. 5 (f) is to be illustrated in the circulation that changes corresponding to cooling water temperature in the absorption refrigerating machine of Fig. 3 on Du Lin (D ü hring) line chart.Regulate the import volume of therefrom warm regenerator GM with cap relief valve V1, the power of regeneration (heating concentrating capacity) of auxiliary regenerator GX is changed to the refrigerant vapour of auxiliary regenerator GX.The change of the ability of auxiliary regenerator GX, also the valve V2 in the path of the heat transfer part bypass of the auxiliary regenerator GX that can represent with the dotted line that makes Fig. 3 implements.

In Fig. 5 (a), V1 closes fully with valve, under the situation of the ability of losing auxiliary regenerator GX, becomes triple effectiveness circulations.Valve V1 is become the direction of opening, strengthen the ability of auxiliary regenerator GX, the concentration of leading to the weak solution of low-temperature regenerator GL simultaneously reduces, and such variation the shown in Fig. 5 (b)～Fig. 5 (c) accompanies therewith, and the outlet solution temperature of high-temp regenerator GH reduces.

Near Fig. 5 (c)～5 (d), become the solution that is equivalent to Fig. 1 gradually and distribute from being equivalent to Fig. 2, be 31～32 ℃ even become cooling water temperature, the circulation shown in Fig. 5 (f) that high-temp regenerator GH can not become high pressure yet, can turn round.

Fig. 7 is illustrated in the circulation that is equivalent to Fig. 1 and (is divided into two groups owing to circulate, so be expressed as " separation ") and the circulation that is equivalent to Fig. 2 (because with absorber, auxilliary absorber, low-temperature regenerator, the circulation of auxiliary regenerator series connection carrying out solution, so, be expressed as " series connection ") in, make cooling water temperature be about 31 ℃ constant, change the heating efficiency of auxiliary regenerator, the high temperature regeneration actuator temperature under the situation of the auxiliary regenerator pressure (refrigerant vapour saturation temperature) of change and the efficient (COP) of absorption refrigerating machine, in whole zone, COP is than better about the COP=1.2 under the double effectiveness situation.

When the adjusting by cap relief valve V1, when increasing the heating efficiency of auxiliary regenerator, the pressure (refrigerant vapour saturation temperature) of auxiliary regenerator uprises, but the solution temperature step-down of high-temp regenerator.Solid line partly is the solution distribution control by V3, V4, the numerical value when selecting in the mode that becomes the high control of COP.

In addition, actual control reduces at cooling water temperature, in the solution temperature of high-temp regenerator or the scope that pressure does not increase, carries out the high running of COP.Fig. 5 is the example corresponding to the circulation of the temperature selection of cooling water.As other control, for example, can adopt temperature based on cooling water, set the desired value of auxiliary regenerator cold-producing medium saturation temperature, become the control of the mode of desired value with control valve V1, perhaps, also can adopt the methods such as distribution of regulating aperture adjustment valve V3, V4 according to auxiliary regenerator cold-producing medium saturation temperature.

Compare with the circulation of Fig. 5 (f), under the situation of the temperature that further reduces high-temp regenerator GH, by the valve V5 that opens Fig. 3 make the refrigerant vapour of high-temp regenerator GH walk around in warm regenerator GM, can be equivalent to the running of double effectiveness, high-temp regenerator pressure, solution temperature reduce.And then by the adjusting of valve V1, V3, V4, single-action is used and the middle circulation of double effectiveness also becomes possibility.

In addition, the refrigerant vapour of warm regenerator GM was kept out of the way the cap relief valve (not shown) among the condenser C during utilization made, and also can carry out same running.

In addition, in triple effectiveness absorption refrigerating machines of two-stage type, also can use the present invention.Further reduce the solution temperature of high-temp regenerator for the gateway temperature difference of utilizing cold water, the absorber A of aforementioned absorption refrigerating machine is divided into low-pressure absorber AL and high pressure absorber AH, evaporimeter E is divided into low pressure evaporator EL and high pressure evaporator EH, earlier cold water is directed to high pressure evaporator EH, then will carry out overcooled cold water and be directed to low pressure evaporator EL, simultaneously, to come from auxiliary regenerator GX earlier, in the concentrated solution of warm regenerator GM and high-temp regenerator GH be directed to low-pressure absorber AL, make it to absorb the refrigerant vapour that comes from low pressure evaporator EL, to in low-pressure absorber AL, be directed to high pressure absorber AH by the solution of absorption refrigeration agent steam, make it to absorb the refrigerant vapour that comes from high pressure evaporator EH, can force down the concentration of the solution that leaves absorber A.

To in high pressure absorber AH, the part of the solution of absorption refrigeration agent steam be sent to auxilliary absorber AX, further reduce concentration, be sent to low-temperature regenerator GL, reduce boiling temperature, finally can reduce solution temperature and the necessary heat source temperature of high-temp regenerator GH.

In addition the solution path of triple effectiveness also exists various streams, and the present invention also goes for these streams.Fig. 8 (a) is the circulation of these other examples of expression of representing on Du Lin (D ü hring) line chart (b).

For warm regenerator GM, low-temperature regenerator GL, auxiliary regenerator GX in of the present invention, except utilizing refrigerant vapour heating by high-temp regenerator GH, can also drop into and the external heat source that the thermal source of putting into high-temp regenerator GH is compared, temperature is low, can effectively utilize used heat etc.Under the situation of utilizing steam as the thermal source of high-temp regenerator GH, can be that a kind of of used heat is used with the hotwork of steam exhaust pipe.

Fig. 9 is the flow circuit diagram that expression utilizes another form of implementation of the present invention of external heat source.

This form of implementation, in the absorption refrigerating machine of Fig. 1, be provided with drop into to middle temperature regenerator GM, low-temperature regenerator GL, auxiliary regenerator GX come from outside used heat, with the heat-transfer pipe HP of solution heating, whereby, can save the high temperature heat source (combustion fuel etc. are made) of putting into high-temp regenerator GH.

Promptly, the amount of the refrigerant vapour when utilizing used heat to make it refrigerant vapour takes place in season is during for G, and under the situation that produces same freezing output, the refrigerant vapour amount that high-temp regenerator GH is taken place reduces about G/2.5, thereby, can reduce the high temperature heat source of putting into high-temp regenerator GH.Can drop into the position of used heat, be condition with the used heat temperature position higher than solution temperature, still, and usually because lower than the temperature of the thermal source of high-temp regenerator, so, be any one among middle temperature regenerator GM, low-temperature regenerator GL, the auxiliary regenerator GX.At this moment, when only with waste heat low-temperature regenerator GL and auxiliary regenerator GX since the refrigerant vapour of middle temperature regenerator GM become can not condensation, so, preferably, only utilize waste heat one of them.

Utilization is led to the heating that the refrigerant vapour of each regenerator carries out and is utilized the combination that comes from the heating that outside used heat carries out, and is not limited to situation shown in Figure 9, for example, below various situations all be possible.

Has high-temp regenerator GH, in warm regenerator GM, low-temperature regenerator GL, condenser C, absorber A, evaporimeter E, auxiliary regenerator GX, auxilliary absorber AX and connecting in triple effectiveness absorption refrigerating machines in path of these machines, comprise: solution is at absorber A, auxiliary regenerator GX, in warm regenerator GM, and the high concentration circulating path that circulates between the high-temp regenerator GH, the low concentration circulating path that solution circulates between auxilliary absorber AX and low-temperature regenerator GL, and comprise: the refrigerant vapour that will take place in auxiliary regenerator GX is directed to the path among the auxilliary absorber AX, the refrigerant vapour that will take place in middle temperature regenerator GM is directed to the path of the heated side of low-temperature regenerator GL and/or auxiliary regenerator GX, the path of the heated side of warm regenerator GM during the refrigerant vapour that will take place in high-temp regenerator GH is directed to, in described triple effectiveness absorption refrigerating machines, can in low-temperature regenerator GL and/or auxiliary regenerator GX, be provided with and accept to come from outside used heat, the heat-transfer pipe HP of heated solution.

In addition, in triple effectiveness absorption refrigerating machines of above-mentioned circulation, can in middle temperature regenerator GM, be provided with and accept to come from outside used heat, the heat-transfer pipe HP of heated solution.

In addition, in triple effectiveness absorption refrigerating machines of above-mentioned circulation, in low-temperature regenerator GL and auxiliary regenerator GX, be provided with under the situation of the heat-transfer pipe HP that accepts to come from outside used heat, heated solution, with the fluid of used heat as the sensible heat variation, after this fluid is directed to low-temperature regenerator GL, it can be directed to auxiliary regenerator GX.

In addition, in triple effectiveness absorption refrigerating machines of above-mentioned circulation, under the situation that the heat-transfer pipe HP that accepts to come from outside used heat, heated solution is set on the middle temperature regenerator GM, with the fluid of used heat as the sensible heat variation, in being directed to, this fluid after the warm regenerator GM, it can be directed to low-temperature regenerator GL and/or auxiliary regenerator GX.

In addition, has high-temp regenerator GH, in warm regenerator GM, low-temperature regenerator GL, condenser C, absorber A, evaporimeter E, auxiliary regenerator GX, auxilliary absorber AX and connecting in triple effectiveness absorption refrigerating machines in path of these machines, comprise: solution is at absorber A, auxiliary regenerator GX, in warm regenerator GM, and the high concentration circulating path that circulates between the high-temp regenerator GH, the low concentration circulating path that solution circulates between auxilliary absorber AX and low-temperature regenerator GL, and comprise: the refrigerant vapour that will take place in auxiliary regenerator GX is directed to the path among the auxilliary absorber AX, the refrigerant vapour that will take place in middle temperature regenerator GM is directed to the path of the heated side of low-temperature regenerator GL and auxiliary regenerator GX, the path of the heated side of warm regenerator GM during the refrigerant vapour that will take place in high-temp regenerator GH is directed to, in described triple effectiveness absorption refrigerating machines, can in middle temperature regenerator GM, be provided with and accept to come from outside used heat, the heat-transfer pipe HP of heated solution.

Illustrated that above the heat-transfer pipe HP that will drop into from the used heat of outside is arranged on the situation in the same drums such as GM, GL, GX, but also HP can have been remained on and GM, GL, GX etc. side by side or in the other drum of tandem.

In addition, on the position during the heat exchanger that also utilization can be come from outside waste heat solution is arranged on outside warm regenerator GM, low-temperature regenerator GL, the auxiliary regenerator GX.

In addition, in above-mentioned triple effectiveness absorption refrigerating machines, the mechanism that performance can be set and stop the function of above-mentioned auxiliary regenerator GX and/or auxilliary absorber AX.

In addition, when little load, also can stop to lead to the high temperature heat source of high-temp regenerator GH, only turn round with used heat.

In addition, in Fig. 1～Fig. 3 and Fig. 9, cooling water flows with the order of absorber A, condenser C, auxilliary absorber AX, but also can flow through condenser C from the beginning, also can flow through the whole of them side by side.

In addition, also can flow through absorber A and auxilliary absorber AX side by side, halfway, make a part flow through condenser C, flow etc. from original half-way once more,, also can change the cooling-water flow order in order to reduce solution temperature.

In addition, auxiliary regenerator GX, as long as enter the high concentration circulation side, both can be before high-temp regenerator GH, middle temperature regenerator GM, also can be after them, also can be arranged side by side.

The present invention is owing to append auxiliary regenerator GX and auxilliary absorber AX, prevent high temperatureization, the high-pressure trend of the high-temp regenerator GH of triple effectiveness circulations, the pressure or the solution temperature of high-temp regenerator are reduced, so, can make up with any triple effectiveness, be included in the additional whole circumstances of assisting regenerator and auxilliary absorber on triple effectiveness.Figure 10 represents 16 kinds of basic model S, P, R, SP, PS1, PS2, PS3, PS4, SR1, SR2, RS1, RS2, RP1, RP2, PR1, PR2 and their modification pattern.

The understanding method of each circulation pattern shown in Figure 10 is as described below.

The longitudinal axis is represented dew point (DewPoint), promptly, with respect to refrigerant vapor saturation of forces temperature, transverse axis is represented the concentration (Concentration) of absorbent solution, the circulation of each cyclic representation solution (not representing that concentration is near 0% or 0% refrigerant system).With vertical solid line represent solution variations in temperature, with the dew point of this solution temperature balance.In ordinate portion, possessing of concentrated solution of hot recuperation of heat to the weak solution side, still, is not expressed it in circulation.Horizontal solid line, expression is because change in concentration, the dotted line concentrated or solution that absorption causes are represented mixing.(do not have change in concentration along dotted line, two kinds of liquid mix, and become the concentration of blank small circle) black dot, the branch location of expression solution.In addition, in the drawings, GH represents high-temp regenerator, warm regenerator during GM represents, and GL represents low-temperature regenerator, and GX represents auxiliary regenerator, and AX represents auxilliary absorber, and A represents absorber.

Below, describe with the embodiment in the list.

The S circulation

(1) S circulation (on): have only solid line

The weak solution of leaving absorber A enters high-temp regenerator GH, is concentrated.(horizontal solid line)

Warm regenerator GM during the solution that leaves high-temp regenerator GH enters is concentrated.(horizontal solid line)

The solution of warm regenerator GM enters auxiliary regenerator GX in leaving, and is concentrated.(horizontal solid line)

The concentrated solution of leaving auxiliary regenerator GX enters absorber A, the absorption refrigeration agent, and concentration reduces.(horizontal solid line)

(2) S circulation (on): dotted line is arranged in GM portion

The major part of leaving the weak solution of absorber A enters high-temp regenerator GH, is concentrated.(horizontal solid line)

Leave the part of the weak solution of absorber A and partly prop up, warm regenerator GM (horizontal dotted line) in being sent at the black dot.

Mix with the solution that is concentrated by high-temp regenerator GH.The blank small circle of dotted line right-hand member is represented melting concn.Warm regenerator GM concentrates in the mixed solution quilt.(horizontal solid line)

(3) S circulation (in down): dotted line is arranged in GX portion

Leave the part of the weak solution of absorber A and partly prop up at the black dot, be sent to auxiliary regenerator GX (horizontal dotted line) with by in the concentrated solution of warm regenerator GM mix.The blank small circle in dotted line right part is a melting concn.

Mixed solution is concentrated by auxiliary regenerator GX.(horizontal solid line)

(4) S circulation (descending): dotted line is arranged in GM, GX portion

Leave the part of the weak solution of absorber A and partly prop up at the black dot, warm regenerator GM (horizontal dotted line) mixes with the solution that is concentrated by high-temp regenerator GH in being sent to.The blank small circle in dotted line right part is a melting concn.

Warm regenerator GM concentrates in the mixed solution quilt.(horizontal solid line)

Leave the part of the weak solution of absorber A and partly prop up at the black dot, be sent to auxiliary regenerator GX (horizontal dotted line), the solution that concentrates with warm regenerator GM in the quilt mixes.The blank small circle in dotted line right part is a melting concn.

The P circulation

(1) P circulation (on):

Leave the part of the weak solution of absorber A and partly prop up at the black dot, be sent to auxiliary regenerator GX, and then a remaining part is propped up partly at upside black dot, warm regenerator GM in being sent to remainingly is sent to high-temp regenerator GH.

The solution that enters high-temp regenerator GH is concentrated.(horizontal solid line)

Leave the solution of high-temp regenerator GH, warm regenerator GM in being sent to, and mix with the solution that is concentrated, become the melting concn of blank small circle.

The solution of warm regenerator GM in leaving is sent to auxiliary regenerator GX and mixes with the solution that concentrates, and becomes the melting concn of blank small circle.

(2) P circulation (on):

Leaving the part of the weak solution of absorber A partly props up at the black dot of absorber outlet, be sent to auxiliary regenerator GL, and then the part of remainder is propped up partly at the black dot of upside, warm regenerator GM in being sent to remainingly is sent to high-temp regenerator GH.

Leave the solution of high-temp regenerator GH, warm regenerator GM and mix with the solution that concentrates in being sent to becomes the melting concn of blank small circle.

Be sent to the weak solution of auxiliary regenerator GX, concentrated separately.(horizontal solid line)

The concentrated solution of warm regenerator GM and auxiliary regenerator GX enters absorber A in leaving, the absorption refrigeration agent, and concentration reduces.(horizontal solid line)

If (mix at the absorber inlet, then a part becomes dotted line.If enter respectively, then become solid line.All it doesn't matter for any situation.Below identical)

(3) P circulation (in down):

Leave the part of the weak solution of absorber A, black dot in the absorber outlet partly props up, and be sent to auxiliary regenerator GX, and then the part of remainder is propped up partly at the black dot of upside, warm regenerator GL in being sent to remainingly is sent to high-temp regenerator GH.

Leave the solution of high-temp regenerator GH, be sent to auxiliary regenerator GX and mix, become the concentration of blank small circle with the solution that concentrates.

The weak solution of warm regenerator GM in being sent to is concentrated separately.(horizontal solid line)

(4) P circulation (descending):

Leave the weak solution of absorber A and partly prop up at the black dot of absorber outlet, a part is sent to auxiliary regenerator GX, warm regenerator GM during another part is sent to, and rest parts is sent to high-temp regenerator GH.

The solution that enters high-temp regenerator is concentrated.(horizontal solid line)

The weak solution of warm regenerator GM is concentrated separately in being sent to.(horizontal solid line)

The weak solution that is sent to auxiliary regenerator GX is concentrated separately.(horizontal solid line)

The concentrated solution of leaving high-temp regenerator GH, middle temperature regenerator GM, auxiliary regenerator GX enters absorber A, and the absorption refrigeration agent concentration reduces.(horizontal solid line)

The R circulation

(1) R circulation (on):

Leave the weak solution of absorber A, be sent to auxiliary regenerator GX, be concentrated.(horizontal solid line)

Warm regenerator GM during the solution that leaves auxiliary regenerator GX is sent to is further concentrated.(horizontal solid line)

The solution of warm regenerator GM is sent to high-temp regenerator GH in leaving, and is further concentrated.(horizontal solid line)

The concentrated solution of leaving high-temp regenerator GH enters absorber A, the absorption refrigeration agent, and concentration reduces.(horizontal solid line)

(2) R circulation (on):

The major part of the solution of warm regenerator GM is sent to high-temp regenerator GH in leaving, and is further concentrated.(horizontal solid line)

Leave the remainder of the solution of steam regenerator GM, mix with the solution that is concentrated by high-temp regenerator.

The solution that mixes enters absorber A, the absorption refrigeration agent, and concentration reduces.(horizontal solid line)

(3) R circulation (in down):

The weak solution of leaving absorber A is sent to auxiliary regenerator GX, is concentrated.(horizontal solid line)

Warm regenerator GM during the major part of leaving the solution of auxiliary regenerator GX is sent to is further concentrated.(horizontal solid line)

Leaving the part of the solution of auxiliary regenerator GX mixes with the solution that comes from high-temp regenerator GH.

(4) R circulation (descending):

The remainder of the solution of warm regenerator GM and the solution that concentrated by high-temp regenerator GH mix in leaving, and then, mix with the remainder of the solution that leaves auxiliary regenerator GX.

Other circulation similarly, is the branch of solution, the combination that concentrates, mixes.Represented in list, be the polytype that expression it is contemplated that.

In addition, in this figure, the importing of mixed solution, all be from high-temp regenerator GH, the inlet portion of warm regenerator GM, auxiliary regenerator GX carry out, but, also can be that a kind of solution imports from inlet portion, the solution of mixing or another kind of solution are from import midway.

The industrial field that utilizes

As mentioned above, in the present invention, by making aforementioned absorption refrigerating machine, double effectiveness Become possiblely with circulation in the middle of triple effectiveness, can make the pressure of high-temp regenerator or molten Liquid temp is in below the setting, and then, can make according to heat source temperature, cooling water temperature Condition or cold water temperature condition, can be from the circulation of centre until the circulation of triple effectiveness connect Triple effectiveness absorption refrigerating machines of continuous rather than stepped variation.

Claims

1. triple effectiveness absorption refrigerating machine, has high-temp regenerator, in warm regenerator, low-temperature regenerator, condenser, absorber, evaporimeter, auxiliary regenerator, auxilliary absorber and the path that connects these machines, it is characterized in that, described refrigerator comprises: make solution at aforementioned absorber, aforementioned auxiliary regenerator, warm regenerator in aforementioned, and the high concentration circulating path that circulates between the aforementioned high-temp regenerator, the low concentration circulating path that solution is circulated between aforementioned auxilliary absorber and low-temperature regenerator, and, comprise: the refrigerant vapour that will take place in aforementioned auxiliary regenerator is directed to the path in the aforementioned auxilliary absorber, the refrigerant vapour that will take place in the warm regenerator in aforementioned is directed to the path of the heated side of the heated side of aforementioned low-temperature regenerator and auxiliary regenerator, and the refrigerant vapour that will in aforementioned high-temp regenerator, take place be directed to aforementioned in the path of heated side of warm regenerator.

2. triple effectiveness absorption refrigerating machine as claimed in claim 1 is characterized in that, the mechanism that makes the function stop of aforementioned auxiliary regenerator and/or aforementioned auxilliary absorber or make it to bring into play function is set.

3. triple effectiveness absorption refrigerating machine as claimed in claim 1 is provided with the heat-transfer pipe that acceptance is heated from the used heat of outside, to solution in aforementioned low-temperature regenerator and/or aforementioned auxiliary regenerator.

4. triple effectiveness absorption refrigerating machine as claimed in claim 1 is characterized in that, in aforementioned in the warm regenerator, has the heat-transfer pipe of accepting to come from outside used heat, solution being heated.

5. triple effectiveness absorption refrigerating machine as claimed in claim 3 is characterized in that, this used heat is to carry out the fluid that sensible heat changes, and this fluid is imported after the aforementioned low-temperature regenerator, and aforementioned auxiliary regenerator leads.

6. triple effectiveness absorption refrigerating machine as claimed in claim 4 is characterized in that this used heat is the fluid with sensible heat, with this fluid import aforementioned in after the warm regenerator, aforementioned low-temperature regenerator and/or auxiliary regenerator lead.

7. triple effectiveness absorption refrigerating machine, has high-temp regenerator, in warm regenerator, low-temperature regenerator, condenser, absorber, evaporimeter, auxiliary regenerator, auxilliary absorber and the path that connects these machines, it is characterized in that, described refrigerator comprises: the part that will come from the weak solution of aforementioned absorber is directed to aforementioned auxilliary absorber, make the rest solution of not exporting to auxilliary absorber at absorber simultaneously, the path of circulating between the warm regenerator during high-temp regenerator reaches, the weak solution of aforementioned auxilliary absorber is directed to the path of aforementioned low-temperature regenerator, make the solution of aforementioned low-temperature regenerator turn back to the path of aforementioned absorber via aforementioned auxiliary regenerator, the refrigerant vapour that will take place in aforementioned auxiliary regenerator is directed to the path in the aforementioned auxilliary absorber, and, comprise: the refrigerant vapour that will take place in the warm regenerator in aforementioned is directed to the path of the heated side of the heated side of aforementioned low-temperature regenerator and auxiliary regenerator, the refrigerant vapour that will in aforementioned high-temp regenerator, take place be directed to aforementioned in the path of heated side of warm regenerator.

8. triple effectiveness absorption refrigerating machine as claimed in claim 7 is characterized in that, the mechanism that makes the function stop of aforementioned auxiliary regenerator and/or aforementioned auxilliary absorber or make it to bring into play function is set.

9. triple effectiveness absorption refrigerating machine, has high-temp regenerator, in warm regenerator, low-temperature regenerator, condenser, absorber, evaporimeter, auxiliary regenerator, auxilliary absorber and the path that connects these machines, it is characterized in that, described refrigerator is provided with following each circulation: (a) circulation, this circulation comprises: solution is at aforementioned absorber, aforementioned auxiliary regenerator, warm regenerator in aforementioned, and the high concentration circulating path that circulates between the aforementioned high-temp regenerator, the low concentration circulating path that solution circulates between aforementioned auxilliary absorber and low-temperature regenerator, and form: the refrigerant vapour that will take place in aforementioned auxiliary regenerator is directed to the path in the aforementioned auxilliary absorber, the refrigerant vapour that will take place in the warm regenerator in aforementioned is directed to the heated side of aforementioned low-temperature regenerator and assists the path of the heated side of regenerator, and the refrigerant vapour that will in aforementioned high-temp regenerator, take place be directed to aforementioned in the path of heated side of warm regenerator, (b) circulation, this circulation comprises: the part that will come from the weak solution of aforementioned absorber is directed to aforementioned auxilliary absorber, make the rest solution that does not flow to auxilliary absorber at absorber simultaneously, the path of circulating between the warm regenerator during high-temp regenerator reaches, the weak solution of aforementioned auxilliary absorber is directed to the path of aforementioned low-temperature regenerator, make the solution of aforementioned low-temperature regenerator turn back to the path of aforementioned absorber via aforementioned auxiliary regenerator, the refrigerant vapour that will take place in aforementioned auxiliary regenerator is directed to the path in the aforementioned auxilliary absorber, and form: the refrigerant vapour that will take place in the warm regenerator in aforementioned is directed to the heated side of aforementioned low-temperature regenerator and assists the path of the heated side of regenerator, the refrigerant vapour that will in aforementioned high-temp regenerator, take place be directed to aforementioned in the path of heated side of warm regenerator, (c) circulation, this circulation make aforementioned (a) or (b) the auxiliary regenerator in the circulation and at least one the function stop in the aforementioned auxilliary absorber; And described refrigerator is provided with the mechanism of switching between aforementioned (a) and (b), (c) circulation.

10. as claim 1,7 or 9 described triple effectiveness absorption refrigerating machines, it is characterized in that the steam supply amount and/or the solution supply that are provided with by regulating the described auxiliary regenerator of supply increase and decrease the governor motion that heats concentrating capacity on aforementioned auxiliary regenerator.

11. as claim 1,7 or 9 described triple effectiveness absorption refrigerating machines, it is characterized in that, on aforementioned auxilliary absorber, be provided with by regulating the cooling water inflow of supplying with described auxilliary absorber or the governor motion that the solution supply increases and decreases absorbability.

12. as claim 1,7 or 9 described triple effectiveness absorption refrigerating machines, it is characterized in that, aforementioned auxiliary regenerator has the governor motion that increases and decreases the heating concentrating capacity by steam supply amount that regulate to supply with described auxiliary regenerator and/or solution supply, and aforementioned auxilliary absorber has the governor motion that increases and decreases absorbability by the cooling water inflow or the solution supply of regulating to described auxilliary absorber.

13. as any one described triple effectiveness absorption refrigerating machine in the claim 1,2,7～9, it is characterized in that, be provided with such path, this path with make the refrigerant vapour that in aforementioned high-temp regenerator, takes place walk around in warm regenerator and the guiding path of refrigerant vapour of warm regenerator is connected, and/or this path makes the refrigerant vapour that takes place in middle temperature regenerator walk around low-temperature regenerator and assists regenerator and be connected with condenser.

14. triple effectiveness absorption refrigerating machine as claimed in claim 10, it is characterized in that, be provided with such path, this path with make the refrigerant vapour that in aforementioned high-temp regenerator, takes place walk around in warm regenerator and the guiding path of refrigerant vapour of warm regenerator is connected, and/or this path makes the refrigerant vapour that takes place in middle temperature regenerator walk around low-temperature regenerator and assists regenerator and be connected with condenser.

15. triple effectiveness absorption refrigerating machine as claimed in claim 11, it is characterized in that, be provided with such path, this path with make the refrigerant vapour that in aforementioned high-temp regenerator, takes place walk around in warm regenerator and the guiding path of refrigerant vapour of warm regenerator is connected, and/or this path makes the refrigerant vapour that takes place in middle temperature regenerator walk around low-temperature regenerator and assists regenerator and be connected with condenser.

16. triple effectiveness absorption refrigerating machine as claimed in claim 12, it is characterized in that, be provided with such path, this path with make the refrigerant vapour that in aforementioned high-temp regenerator, takes place walk around in warm regenerator and the guiding path of refrigerant vapour of warm regenerator is connected, and/or this path makes the refrigerant vapour that takes place in middle temperature regenerator walk around low-temperature regenerator and assists regenerator and be connected with condenser.

17. as claim 1,2 or 9 described triple effectiveness absorption refrigerating machines, it is characterized in that having solution with aforementioned high concentration circulating path and be directed to aforementioned low concentration circulating path and make the solution suitable turn back to the path of aforementioned high concentration circulating path from aforementioned low concentration circulating path with the solution amount that is directed to aforementioned low concentration circulating path from aforementioned high concentration circulating path.

18. triple effectiveness absorption refrigerating machine as claimed in claim 13, it is characterized in that having solution with aforementioned high concentration circulating path and be directed to aforementioned low concentration circulating path and make the solution suitable turn back to the path of aforementioned high concentration circulating path from aforementioned low concentration circulating path with the solution amount that is directed to aforementioned low concentration circulating path from aforementioned high concentration circulating path.

19. triple effectiveness absorption refrigerating machine as claimed in claim 10, it is characterized in that having solution with aforementioned high concentration circulating path and be directed to aforementioned low concentration circulating path and make the solution suitable turn back to the path of aforementioned high concentration circulating path from aforementioned low concentration circulating path with the solution amount that is directed to aforementioned low concentration circulating path from aforementioned high concentration circulating path.

20. triple effectiveness absorption refrigerating machine as claimed in claim 11, it is characterized in that having solution with aforementioned high concentration circulating path and be directed to aforementioned low concentration circulating path and make the solution suitable turn back to the path of aforementioned high concentration circulating path from aforementioned low concentration circulating path with the solution amount that is directed to aforementioned low concentration circulating path from aforementioned high concentration circulating path.

21. triple effectiveness absorption refrigerating machine as claimed in claim 12, it is characterized in that having solution with aforementioned high concentration circulating path and be directed to aforementioned low concentration circulating path and make the solution suitable turn back to the path of aforementioned high concentration circulating path from aforementioned low concentration circulating path with the solution amount that is directed to aforementioned low concentration circulating path from aforementioned high concentration circulating path.

22. triple effectiveness absorption refrigerating machine as claimed in claim 14, it is characterized in that having solution with aforementioned high concentration circulating path and be directed to aforementioned low concentration circulating path and make the solution suitable turn back to the path of aforementioned high concentration circulating path from aforementioned low concentration circulating path with the solution amount that is directed to aforementioned low concentration circulating path from aforementioned high concentration circulating path.

23. triple effectiveness absorption refrigerating machine as claimed in claim 15, it is characterized in that having solution with aforementioned high concentration circulating path and be directed to aforementioned low concentration circulating path and make the solution suitable turn back to the path of aforementioned high concentration circulating path from aforementioned low concentration circulating path with the solution amount that is directed to aforementioned low concentration circulating path from aforementioned high concentration circulating path.

24. triple effectiveness absorption refrigerating machine as claimed in claim 16, it is characterized in that having solution with aforementioned high concentration circulating path and be directed to aforementioned low concentration circulating path and make the solution suitable turn back to the path of aforementioned high concentration circulating path from aforementioned low concentration circulating path with the solution amount that is directed to aforementioned low concentration circulating path from aforementioned high concentration circulating path.