CN108253656A - The control method of Absorption Refrigerator, control program and Absorption Refrigerator - Google Patents

The control method of Absorption Refrigerator, control program and Absorption Refrigerator Download PDF

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Publication number
CN108253656A
CN108253656A CN201711275357.0A CN201711275357A CN108253656A CN 108253656 A CN108253656 A CN 108253656A CN 201711275357 A CN201711275357 A CN 201711275357A CN 108253656 A CN108253656 A CN 108253656A
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China
Prior art keywords
absorbing liquid
refrigerant
liquid
mixed
correlation
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Granted
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CN201711275357.0A
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Chinese (zh)
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CN108253656B (en
Inventor
青山淳
入江智芳
樱场郎
樱场一郎
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Ebara Refrigeration Equipment and Systems Co Ltd
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Ebara Refrigeration Equipment and Systems Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/04—Arrangement or mounting of control or safety devices for sorption type machines, plants or systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/62—Absorption based systems

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Sorption Type Refrigeration Machines (AREA)

Abstract

The present invention provides the control method of the diluted Absorption Refrigerator for efficiently carrying out absorbing liquid, control program and Absorption Refrigerator.The Absorption Refrigerator that temperature adjusting object fluid is cooled down or heated by the absorption cycle of absorbing liquid and refrigerant has：Solution pump makes absorbing liquid be circulated in inside；Refrigerant liquid can be mixed into portion, allow hand over liquid being mixed into/not being mixed into the system that can be recycled for absorbing liquid of refrigerant；Absorbing liquid concentration correlation grasp portion grasps the concentration dependent value with absorbing liquid；Control device, in the supply for stopping heating source, control solution pump and refrigerant liquid can be mixed into portion, with when the absorbing liquid concentration correlation grasped by absorbing liquid concentration correlation grasp portion is more than the first specified value, carry out solution pump action and/or by refrigerant liquid can the dilution being mixed into carry out absorbing liquid of the refrigerant liquid implemented of the portion of being mixed into operate, operating standby mode is set to without dilution operating when less than the first specified value.

Description

The control method of Absorption Refrigerator, control program and Absorption Refrigerator
Technical field
The present invention relates to Absorption Refrigerator, program and the control method of Absorption Refrigerator are controlled, more particularly to It efficiently carries out the diluted Absorption Refrigerator of absorbing liquid, control program and the control method of Absorption Refrigerator.
Background technology
Temperature adjusting object fluid is cooled down or added by the absorption cycle of absorbing liquid (solution) and refrigerant The Absorption Refrigerators such as absorption water chiller/heater of heat, there are the operating shapes of deviation for concentration in high temperature and absorbing liquid in slave When stopping Absorption Refrigerator when state is because load is reduced situations such as, generally for the crystallization for preventing absorbing liquid, make it is absorption The dilution operating that refrigeration machine carries out certain time makes the dense of absorbing liquid while being diluted using refrigerant to absorbing liquid Make its stopping after spending the operating of homogenization.It determines to be diluted fortune as the most dense situation of concentration for eliminating wiolation of assumption solution The absorption water chiller/heater of this energy saving defect in the case of the certain time turned, there are absorption water chiller/heaters as described below： The solution concentration detection mechanism being detected to the concentration of the solution in high-temp regenerator is set, is stopped absorbing water chiller/heater When, more than a concentration of specified value of the solution detected by solution concentration detection mechanism in the case of dilute, and molten After the concentration of liquid becomes below specified value, the residual for carrying out the solution pump of stipulated time operates, and end dilution (for example, referring to Patent document 1.).
Patent document 1：Japanese Unexamined Patent Publication 11-37595 bulletins
When stopping Absorption Refrigerator, if solution concentration be in high to a certain degree in the state of the stopping without diluting, When the temperature of solution is reduced to crystallization temperature, solution crystallizes.However, need one since the temperature of solution is reduced to crystallization temperature Determine the time of degree, if so absorption water chiller/heater as described in Patent Document 1 is such, solution a concentration of specified value with Start to dilute in the case of upper, although then solution is until crystallization existence time, is diluted, therefore works as and be reduced to crystallization Make before temperature in the case that absorption water chiller/heater starts again, to dilute required energy and be wasted, and set about needing the time.
Invention content
The present invention efficiently carries out the diluted absorption of absorbing liquid in view of above-mentioned subject its purpose is to provide a kind of The control method of refrigeration machine, control program and Absorption Refrigerator.
To achieve these goals, such as shown in Figure 1, the Absorption Refrigerator of the 1st aspect of the present invention is by logical The absorption cycle of cross supply heating source 31 and form, absorbing liquid S and refrigerant V to carry out temperature adjusting object fluid C cold But or heating Absorption Refrigerator 1, which is characterized in that have：Solution pump 19 makes absorbing liquid S flowings so that absorbing liquid S It is recycled in the inside of Absorption Refrigerator 1；Refrigerant liquid can be mixed into portion 70, and allowing hand over makes the liquid Vf of refrigerant be mixed into confession The state of system 10,18,30,38 and the liquid Vf of refrigerant is not made to be mixed into the shape of the system that absorbing liquid S can be recycled State；Absorbing liquid concentration correlation grasp portion 53 grasps the concentration dependent absorbing liquid concentration correlation with absorbing liquid S；And Control device 60 in the supply for stopping heating source 31, controls solution pump 19 and refrigerant liquid that can be mixed into portion 70, with by When the absorbing liquid concentration correlation that absorbing liquid concentration correlation grasp portion 53 grasps is more than the first specified value, by carrying out solution The action of pump 19 and at least one party being mixed into the two that the refrigerant liquid Vf implemented in portion 70 can be mixed by refrigerant liquid, It is operated to be diluted the dilution of absorbing liquid S, it is related in the absorbing liquid concentration grasped by absorbing liquid concentration correlation grasp portion 53 When value is less than the first specified value, operating standby mode is set to without dilution operating.
It is non crystallized even if the dilution without absorbing liquid if forming in this way, it can not also be inhaled The dilution of liquid is received, therefore dilution can be reduced and operate energy required when starting again at, so as to shorten operating again Set about the required time during secondary beginning.
In addition, the Absorption Refrigerator of the 2nd aspect of the present invention, if referring for example to Fig. 1 shows in the invention described above First method Absorption Refrigerator 1 on the basis of, it is related to the environment temperature around Absorption Refrigerator 1 to have grasp Ambient temperature correlation ambient temperature correlation grasp portion 55, the first specified value is set as and ambient enviroment temperature Degree correlation accordingly changes.
If forming in this way, the first specified value refers to the temperature of absorbing liquid with may be decreased after the supply of heating source stops The relevant ambient temperature correlation of lower limiting value that is, ambient temperature of degree is changed, so as to which ambient temperature is got over Height, the first specified value is set to can be bigger, thus enables that the diluted range expansion without absorbing liquid.
In addition, the Absorption Refrigerator of the 3rd aspect of the present invention, if referring for example to Fig. 1 shows in the invention described above First method or second method Absorption Refrigerator 1 on the basis of, have the relevant suction of temperature of grasp and absorbing liquid S The absorbing liquid temperature-related-magnitude grasp portion 51 of liquid temperature-related-magnitude is received, control device 60 is after operating standby mode is set as, control Solution pump 19 and refrigerant liquid can be mixed into portion 70, in the absorbing liquid temperature with being grasped by absorbing liquid temperature-related-magnitude grasp portion 51 The temperature of the corresponding absorbing liquid S of degree correlation is diluted operating when becoming below the second specified value.
It, can in the case of generating the worry of absorbing liquid crystallization after operating standby mode is being set as if forming in this way The dilution of absorbing liquid is carried out, and avoids the crystallization of absorbing liquid.
In addition, the Absorption Refrigerator of the 4th aspect of the present invention, if referring for example to Fig. 1 shows in the invention described above Third Way Absorption Refrigerator 1 on the basis of, it is related to the environment temperature around Absorption Refrigerator 1 to have grasp Ambient temperature correlation ambient temperature correlation grasp portion 55, the second specified value is set as and ambient enviroment temperature Degree correlation accordingly changes.
If forming in this way, the temperature for crystallizing beginning more the characteristic reduced with reference to the concentration more low absorption liquid of absorbing liquid, It can make the diluted range expansion without absorbing liquid.
In addition, the Absorption Refrigerator of the 5th aspect of the present invention, if referring for example to Fig. 1 shows in the invention described above First method to the Absorption Refrigerator 1 of any one mode of fourth way on the basis of, control device 60 stop heat During the supply in source 31, it is less than in the absorbing liquid concentration correlation grasped by absorbing liquid concentration correlation grasp portion 53 than the first regulation When being worth small third specified value, without dilution operating and operating standby mode is not set to, and is off Absorption Refrigerator 1.
If forming in this way, the energy to keep on the go needed for standby mode can be reduced.
In addition, the Absorption Refrigerator of the 6th aspect of the present invention, if referring for example to Fig. 1 shows in the invention described above The 5th mode Absorption Refrigerator 1 on the basis of, it is related to the environment temperature around Absorption Refrigerator 1 to have grasp Ambient temperature correlation ambient temperature correlation grasp portion 55, third specified value is set as and ambient enviroment temperature Degree correlation accordingly changes.
If forming in this way, third specified value refers to the temperature of absorbing liquid with may be decreased after the supply of heating source stops The relevant ambient temperature correlation of lower limiting value that is, ambient temperature of degree is changed, so as to which ambient temperature is got over Height, third specified value can be set to it is bigger, thus enable that the dilution without absorbing liquid and be not set to operating standby mode Range expand.
In addition, the Absorption Refrigerator of the 7th aspect of the present invention, if referring for example to Fig. 1 shows in the invention described above First method to the Absorption Refrigerator 1 of any one mode of the 6th mode on the basis of, control device 60 control refrigerant Liquid can be mixed into portion 70, to be not accompanied by that the liquid Vf for the refrigerant that portion 70 is implemented can be mixed into for absorbing liquid from refrigerant liquid When mixed, absorption cycle the stopping time for the system 10,18,30,38 that S can be recycled reaches defined number, Huo Zhe Refrigerant V when being mixed into of the absorbing liquid S into the part 27,47 that the liquid Vf for refrigerant is stockpiled is detected, no matter by absorbing How is the absorbing liquid concentration correlation that liquid concentration correlation grasp portion 53 grasps, and the liquid Vf of refrigerant is made to be mixed into for absorbing liquid The system 10,18,30,38 that S can be recycled.Herein, the liquid of refrigerant is not accompanied by the system that can be recycled for absorbing liquid Mixed, absorption cycle stopping refers to be set as operating standby mode on typical case or without dilution operating and is not set to transport Turn standby mode, and be off Absorption Refrigerator.
If forming in this way, in the case where absorbing liquid is mixed into the system of refrigerant, system that refrigerant can be purified.
In addition, the Absorption Refrigerator of the 8th aspect of the present invention, if referring for example to Fig. 1 shows in the invention described above First method to the Absorption Refrigerator 1 of any one mode of the 7th mode on the basis of, control device 60 control solution pump 19 and refrigerant liquid can be mixed into portion 70, with after absorbing liquid S and refrigerant V is injected to Absorption Refrigerator 1 to process Until the defined duration of runs or defined operating number, no matter the absorption grasped by absorbing liquid concentration correlation grasp portion 53 How is liquid concentration correlation, in the supply for stopping heating source 31, carries out along with the action of solution pump 19 and by freezing Agent liquid can be mixed into liquid Vf the mixing to the system 10,18,30,38 that can be recycled for absorbing liquid S for the refrigerant that portion 70 is implemented Enter the dilution operating of the two.
If forming in this way, overlay film can be properly formed on the surface of the component parts of Absorption Refrigerator.
To achieve these goals, the control program of the 9th aspect of the present invention, if referring for example to Fig. 1, Fig. 2 and Fig. 3 It represents, then control relies on by supplying heating source 31 absorption cycle of form, absorbing liquid S and refrigerant V come to temperature tune The program of Absorption Refrigerator 1 that section subject fluid C is cooled down or heated, which is characterized in that have：Absorbing liquid concentration phase Pass value grasps process (S5), grasps the concentration dependent absorbing liquid concentration correlation with absorbing liquid S；Dilution operating process (S11), When the supply of heating source 31 stops, in the absorbing liquid concentration correlation that process (S5) grasp is grasped by absorbing liquid concentration correlation When more than the first specified value, operated by carrying out at least one party in following the two to be diluted the dilution of absorbing liquid S：Make Absorbing liquid S flows so that absorbing liquid S recycles and make the liquid Vf of refrigerant to be mixed into for inhaling in the inside of Absorption Refrigerator 1 Receive the system 10,18,30,38 that liquid S can be recycled；And the standby process (S21) of operating, when the supply of heating source 31 stops, When grasping absorbing liquid concentration correlation the first specified value of hour that process (S5) is grasped by absorbing liquid concentration correlation, without Dilution operates and is set to operating standby mode.
It is non crystallized even if the dilution without absorbing liquid to be absorbed if forming in this way The dilution of liquid, therefore dilution can be reduced and operate energy required when starting again at, so as to shorten operating again Set about the required time during beginning.
To achieve these goals, the control method of the Absorption Refrigerator of the 10th aspect of the present invention, if referring for example to Fig. 1, Fig. 2 and Fig. 3 are represented, then rely on the suction by supplying heating source 31 form, absorbing liquid S and refrigerant V in order to control The method of Absorption Refrigerator 1 for receiving cycle temperature adjusting object fluid C is cooled down or heated, which is characterized in that Have：Absorbing liquid concentration correlation grasps process (S5), grasps the concentration dependent absorbing liquid concentration correlation with absorbing liquid S； Dilution operating process (S11) in the supply for stopping heating source 31, is grasped grasping process (S5) by absorbing liquid concentration correlation Absorbing liquid concentration correlation more than the first specified value when, by carry out at least one party in following the two be diluted inhale Receive the dilution operating of liquid S：Flow absorbing liquid S so that absorbing liquid S is recycled in the inside of Absorption Refrigerator 1 and made refrigeration Agent liquid Vf, which is mixed into, follows the system 10,18,30,38 for being capable of ring for absorbing liquid S；And the standby process (S21) of operating, stopping heating During the supply in source 31, it is less than the first rule in the absorbing liquid concentration correlation that process (S5) grasp is grasped by absorbing liquid concentration correlation During definite value, operating standby mode is set to without dilution operating.
It is non crystallized even if the dilution without absorbing liquid to be absorbed if forming in this way The dilution of liquid, therefore dilution can be reduced and operate energy required when starting again at, so as to shorten operating again Set about the required time during beginning.
It is non crystallized even if the dilution without absorbing liquid to carry out absorbing liquid according to the present invention Dilution, therefore dilution and operating energy required when starting again at can be reduced, be opened again so as to shorten operating Set about the required time during beginning.
Description of the drawings
Fig. 1 is the system diagram of the signal of the absorption refrigerating machine of embodiments of the present invention.
The first half of sequence when Fig. 2 is the stopping to the absorption refrigerating machine of embodiments of the present invention illustrates Flow chart.
The latter half of sequence when Fig. 3 is the stopping to the absorption refrigerating machine of embodiments of the present invention illustrates Flow chart.
Fig. 4 is the crystallisation concentration of exemplary absorbent liquid and the chart of temperature and the relationship of dilution execution temperature.
The deformed part of sequence when Fig. 5 is the stopping to the absorption refrigerating machine of embodiments of the present invention illustrates Flow chart.
Symbol description
1 ... absorption refrigerating machine；10 ... absorbers；18 ... weak solution pipes；19 ... solution pumps；30 ... regenerators；38 ... is dense molten Liquid pipe；51 ... concentrated solution thermometers；53 ... strong solution concentration meters；55 ... ambient temperature meters；60 ... control devices；70 ... refrigerants Liquid can be mixed into portion；C ... cold water；S ... absorbing liquids；V ... refrigerants；Vf ... refrigerant liquids.
Specific embodiment
Hereinafter, the embodiments of the present invention will be described with reference to the drawings.In addition, to mutually the same in the various figures or phase When component mark same or similar reference numeral, and the repetitive description thereof will be omitted.
In the present specification, " Absorption Refrigerator " is by supplying heating source to regenerator, forming based on regenerator, cold The absorption cycle of condenser, absorber, evaporator etc., the absorption heat source that temperature adjusting object fluid is cooled down or heated The general name of machine, including：Heating source is supplied to regenerator and is formed absorption refrigeration cycle and is supplied cold water (cooled temperature is adjusted Subject fluid) machinery, that is, absorption refrigerating machine, supply heating source to regenerator and form absorption cycle and to supply cold water (cooled Temperature adjusting object fluid) and/or the machinery of hot water (the temperature adjusting object fluid heated) absorb hot and cold water Machine and to regenerator supply heating source and form sorption type heat pump cycle and by evaporator from heat source water recycling heat thus supply To the machinery i.e. sorption type heat pump of hot water (the temperature adjusting object fluid heated) heated in absorber and condenser.With Under, situation of the Absorption Refrigerator for the absorption refrigerating machine of said one mode is illustrated.
First, with reference to Fig. 1, the absorption refrigerating machine 1 of embodiments of the present invention is illustrated.Fig. 1 is absorption refrigerating machine 1 Signal system diagram.Absorption refrigerating machine 1 has absorber 10, steams as the main composition equipment for carrying out absorption refrigeration cycle Device 20, regenerator 30 and condenser 40 are sent out, and has control device 60.Absorption refrigerating machine 1 is refrigerant V relative to absorption Liquid S is recycled when carrying out phase change, thus carries out heat movement, and makes the temperature of the cold water C as temperature adjusting object fluid Spend the equipment reduced.In the following description, about absorbing liquid, in order to which the difference on absorption refrigeration cycle is made to become easy, root According to the position on character, absorption refrigeration cycle, referred to as " weak solution Sw ", " concentrated solution Sa " etc., but when paying no attention to character etc., general name For " absorbing liquid S ".In addition, about refrigerant, in order to which the difference on absorption refrigeration cycle is made to become easy, according to character, absorb Position in refrigeration cycle, referred to as " evaporator refrigerant steam Ve ", " regenerator refrigerant vapour Vg ", " refrigerant liquid Vf " Deng, but when paying no attention to character etc., collectively referred to as " refrigerant V ".In the present embodiment, as absorbing liquid S (absorbent and refrigerant Mixture) using LiBr aqueous solutions, use water (H as refrigerant V2O), however, not limited to this, can also be made with others Cryogen, solution (absorbent) are applied in combination.
Absorber 10 is the equipment of evaporator refrigerant steam Ve generated using concentrated solution Sa absorptions in evaporator 20.It inhales Receiving device 10 has cooling water flow path, that is, cooling tube 11 of Cooling Water D flowings in the inside of absorber can body 17 and makes dense molten The concentrated solution spreading nozzle 12 that liquid Sa is spread towards the outer surface of cooling tube 11.Concentrated solution spreading nozzle 12 is disposed in cooling tube 11 Top fallen in order to the concentrated solution Sa of distribution in cooling tube 11.Absorber 10 is configured to stockpile in the lower part of absorber can body 17 The weak solution Sw reduced by the concentrated solution Sa absorptions evaporator refrigerant steam Ve for making distribution and concentration, and make cooling water D Capture the absorption heat generated when concentrated solution Sa absorbs evaporator refrigerant steam Ve.
Evaporator 20 is makes refrigerant liquid Vf evaporations generate evaporator refrigerant steam Ve so as to right using the heat of cold water C The equipment that cold water C is cooled down.There is evaporator 20 the cold water flow path for cold water C flowings to steam in the inside of evaporator can body 27 Hair pipe 21 and the refrigerant liquid spreading nozzle 22 that refrigerant liquid Vf is made to be spread towards the outer surface of evaporation tube 21.Refrigerant liquid Spreading nozzle 22 is disposed in the top of evaporation tube 21 and is fallen in order to the refrigerant liquid Vf of distribution in evaporation tube 21.Evaporator 20 has Refrigerant liquid pipe 28 that the refrigerant liquid Vf for being accumulated in 27 lower part of evaporator can body is guided to refrigerant liquid spreading nozzle 22, with And the refrigerant liquid Vf in refrigerant liquid pipe 28 is delivered to the refrigerated medium pump 29 of refrigerant liquid spreading nozzle 22.20 structure of evaporator Become, by capturing the refrigerant liquid Vf for being spread to the outer surface of evaporation tube 21 from the cold water C flowed in evaporation tube 21 The heat of gasification of evaporator refrigerant steam Ve is evaporated and become, and cold water C is cooled down, and make the refrigerant liquid Vf of distribution In unevaporated refrigerant liquid Vf be accumulated in the lower part of evaporator can body 27.
In the present embodiment, absorber 10 is configured with the adjoining of evaporator 20, the top of absorber can body 17 and evaporator The top connection of can body 27.By above-mentioned composition, the evaporator refrigerant that can will be generated in the inside of evaporator can body 27 Steam Ve is guided to the inside of absorber can body 17.The cooling water inlet for importing cooling water D is connected in one end of cooling tube 11 Pipe 11a.Cooling water communicating pipe 58 is connected in the other end of cooling tube 11.In cooling water inlet, pipe 11a is connected with absorption refrigeration Cooling water outside machine 1 is toward pipe 98.Cooling water is connected to the cooling tower (not shown) outside absorption refrigerating machine 1 toward pipe 98.Cold But water is equipped with the cooling water pump 91 outside absorption refrigerating machine 1 toward pipe 98.Absorption refrigerating machine 1 is configured to by cooling water pump 91 Operating makes cooling water D be flowed in cooling tube 11.The cold water inlet pipe for importing cold water C is connected in one end of evaporation tube 21 21a makes the cooling water outlet pipe 21b that cold water C flows out be connected to the other end.It is connected with outside absorption refrigerating machine 1 in cold water inlet pipe 21a The cold water return pipe 95 in portion.The water supply pump 92 outside absorption refrigerating machine 1 is equipped in cold water return pipe 95.Absorption refrigerating machine 1 is configured to By the operating of water supply pump 92, cold water C is made to be flowed in evaporation tube 21.It is connected with outside absorption refrigerating machine 1 in cooling water outlet pipe 21b The cold water in portion is toward pipe 96.
Regenerator 30 is importing weak solution Sw, it is heated, so as to be detached from the refrigerant V in weak solution Sw, and The equipment for generating concentrated solution Sa.In regenerator 30, from the refrigerant V that weak solution Sw is detached from vapor state, by refrigerant V Steam be known as regenerator refrigerant vapour Vg.Regenerator 30 has to the weak solution Sw heating parts 31 heated and stockpiles The regenerator can body 37 of imported absorbing liquid S.Heating part 31 is disposed in the inside of regenerator can body 37, is played as heating source Function.Heating part 31 is typically configured as the heat of the combustion heat that can utilize combustion chamber, the steam being externally introduced or hot water etc. Absorbing liquid S is heated.As regenerator 30, tubular regenerator, cigarette tube shaped regenerator, liquid tube shaped regenerator can be used Deng.
Condenser 40 is to import the regenerator refrigerant vapour Vg evaporated in regenerator 30 from weak solution Sw, it is carried out It cools down and makes its condensation, so as to generate the equipment for the refrigerant liquid Vf for being sent to evaporator 20.Condenser 40 is in condenser can body 47 Inside have formed cooling water D flow path component i.e. condenser pipe 41.One end is connected in one end of condenser pipe 41 to be connected to The other end of the cooling water communicating pipe 58 of cooling tube 11.The cooling for flowing out cooling water D is connected in the other end of condenser pipe 41 Water outlet pipe 41b.The cooling water return pipe 99 outside absorption refrigerating machine 1 is connected in cooling water outlet pipe 41b.Cooling water return pipe 99 The cooling tower (not shown) being connected to outside absorption refrigerating machine 1.By above-mentioned composition, and it is configured to flow in cooling water return pipe 99 Dynamic cooling water D is cooled, and tower is (not shown) to be cooled down and supplies to cooling water toward pipe 98.
Condenser can body 47 and the close arranging of regenerator can body 37.In the present embodiment, the top of regenerator can body 37 It is connected with the top of condenser can body 47 via regenerator refrigerant vapour flow path 35.Condenser 40 is configured to via regenerator system Refrigerant vapor flow path 35 imports regenerator refrigerant vapour Vg from regenerator 30, makes to capture in the cooling water D that condenser pipe 41 flows The heat of regenerator refrigerant vapour Vg, and regenerator refrigerant vapour Vg is made to condense and form refrigerant liquid Vf.In this embodiment party In formula, condenser can body 47 and regenerator can body 37 are disposed in the top of evaporator can body 27 and absorber can body 17.It is cold The part (the typically bottom or lower part of condenser can body 47) for stockpiling refrigerant liquid Vf of condenser can body 47 and evaporator The refrigerant liquid pipe 48 that is configured to be condensed of can body 27 connects, and can utilize the difference of internal pressure of geometrical head and the two by condenser tank Refrigerant liquid Vf in body 47 is guided into evaporator can body 27.
The part (the typically bottom or lower part of absorber can body 17) for stockpiling weak solution Sw of absorber can body 17 It is connect with regenerator can body 37 by weak solution pipe 18.Solution pump 19 is equipped in weak solution pipe 18.Absorption refrigerating machine 1 is configured to logical Solution pump 19 is crossed, the weak solution Sw of absorber can body 17 can be delivered in regenerator can body 37.In regenerator can body 37, With being moved from entrance to outlet, refrigerant V is detached from imported weak solution Sw from weak solution Sw, and concentration is made to increase.
The part of the outflow concentrated solution Sa of regenerator can body 37 is with the concentrated solution spreading nozzle 12 of absorber 10 by concentrated solution Pipe 38 connects.Absorption refrigerating machine 1 is configured to that weak solution Sw is delivered to regenerator can body 37 by solution pump 19, in regenerator tank The concentrated solution Sa for being detached from refrigerant V in body 37 and generating is imported into concentrated solution spreading nozzle 12 via concentrated solution pipe 38.Change sentence It talks about, solution pump 19 can be such that absorbing liquid S is recycled between absorber 10 and regenerator 30.Concentrated solution pipe 38 is provided with detection The concentrated solution of the outlet of the concentrated solution thermometer 51 and detection regenerator 30 of the temperature of the concentrated solution Sa of the outlet of regenerator 30 The strong solution concentration meter 53 of the concentration of Sa.Concentrated solution thermometer 51 is equivalent to absorbing liquid temperature-related-magnitude grasp portion, and concentrated solution is dense Degree meter 53 is equivalent to absorbing liquid concentration correlation grasp portion.The temperature of concentrated solution Sa that concentrated solution thermometer 51 is detected is equivalent to Absorbing liquid temperature-related-magnitude.In this way, absorbing liquid temperature-related-magnitude includes the temperature of absorbing liquid S in itself.53 institute of strong solution concentration meter The concentration of the concentrated solution Sa of detection is equivalent to absorbing liquid concentration correlation.In this way, absorbing liquid concentration correlation includes absorbing liquid S's Concentration is in itself.Solution heat exchanger 81 is configured in weak solution pipe 18 and the insertion of concentrated solution pipe 38, the solution heat exchanger 81 Make the weak solution flowed in weak solution pipe 18 Sw and carry out heat exchange between the concentrated solution Sa that is flowed in concentrated solution pipe 38.
Condenser can body 47 stockpile refrigerant liquid Vf part (typically condenser can body 47 bottom or under Portion) with concentrated solution pipe 38 pipe is mixed by the refrigerant liquid for guiding the refrigerant liquid Vf in condenser can body 47 to concentrated solution pipe 38 71 connections.It is mixed into pipe 71 in refrigerant liquid and is equipped with the refrigerant liquid that flow path is opened and closed and be mixed into valve 72.In present embodiment In, portion 70 can be mixed by being mixed into pipe 71 and refrigerant liquid by refrigerant liquid and being mixed into valve 72 and form refrigerant liquid.Refrigerant liquid can be mixed into Portion 70 be configured to switching open refrigerant liquid when being mixed into valve 72 make refrigerant liquid Vf be mixed into concentrated solution pipe 38 state, with Close the state that refrigerant liquid Vf is not made to be mixed into concentrated solution pipe 38 when refrigerant liquid is mixed into valve 72.In addition, in regenerator 30 Outside, the ambient temperature meter 55 of detection temperature is provided near regenerator 30.The temperature in the outside of regenerator 30 be and suction The temperature of the environmental correclation around refrigeration machine 1 is received, is equivalent to ambient temperature correlation.Ambient temperature meter 55 is equivalent to week Collarette border temperature-related-magnitude grasp portion.
The equipment of the action of absorption refrigerating machine 1 in order to control of control device 60.Control device 60 is configured to and solution pump 19, system Cryogenic fluid pump 29, cooling water pump 91, water supply pump 92 are respectively by wired or wireless and electrical connection, and opening for they can be controlled Stop.In addition, control device 60 is configured to concentrated solution thermometer 51 and ambient temperature meter 55 respectively by wired or wireless And be electrically connected, the temperature detected can be received as signal.In addition, control device 60 is configured to and strong solution concentration meter 53 by it is wired or it is wireless be electrically connected, the concentration detected can be received as signal.In addition, 60 structure of control device As with refrigerant liquid be mixed into valve 72 pass through it is wired or wireless be electrically connected, and allow hand over refrigerant liquid and be mixed into opening for valve 72 It closes.In addition, control device 60 is configured to carry out with the absorption refrigerating machine 1 of the Action Specification of aftermentioned absorption refrigerating machine 1 Control.The control of aftermentioned absorption refrigerating machine 1 is stored in control device 60 as sequential programme.
With continued reference to Fig. 1, the effect of absorption refrigerating machine 1 is illustrated.First, to the normal operation of absorption refrigerating machine 1 When effect illustrate.In the normal operation of absorption refrigerating machine 1, according to the instruction for carrying out self-control device 60, refrigerant liquid Being mixed into valve 72 becomes closing, and solution pump 19, refrigerated medium pump 29, cooling water pump 91, water supply pump 92 operate respectively.If observation system The cycle of cryogen V sides is then imported into the regenerator system of condenser 40 via regenerator refrigerant vapour flow path 35 from regenerator 30 Refrigerant vapor Vg is cooled down and condensed, become refrigerant liquid Vf and be accumulated in condenser by the cooling water D flowed in condenser pipe 41 The lower part of can body 47.To the cooling water D that regenerator refrigerant vapour Vg is cooled down, temperature rise and from cooling water return pipe 99 outflows, and it is supplied to cooling tower (not shown).Refrigerant liquid Vf in condenser can body 47 is via condensating refrigerant liquid pipe 48 are imported into evaporator can body 27.
The refrigerant liquid Vf of evaporator can body 27 is imported into from condenser can body 47, with being dissipated from refrigerant liquid spreading nozzle 22 Cloth and unevaporated refrigerant liquid Vf are mixed and are accumulated in the lower part of evaporator can body 27.Refrigerant liquid in evaporator can body 27 Vf flows in refrigerant liquid pipe 28 by refrigerated medium pump 29 and reaches refrigerant liquid spreading nozzle 22.Refrigerant liquid is reached to dissipate The refrigerant liquid Vf of cloth nozzle 22 is spread towards evaporation tube 21, obtains the heat of cold water C that is flowed in evaporation tube 21 and a part of Evaporation, becomes evaporator refrigerant steam Ve, so as to be imported into absorber can body 17.The refrigerant liquid Vf spread seizes heat Cold water C, temperature reduces, and flowed out from cold water toward pipe 96, and the cold water C for being supplied to air conditioner etc. utilizes place. It is spread from refrigerant liquid spreading nozzle 22 and unevaporated refrigerant liquid Vf, and from 47 imported refrigerant liquid of condenser can body Vf is mixed and is accumulated in the lower part of evaporator can body 27.
If next, observing the cycle of the solution S side of absorption refrigerating machine 1, the weak solution Sw in absorber can body 17 is borrowed Hydrotropy liquid pump 19 and flowed in weak solution pipe 18, and in solution heat exchanger 81 after temperature rise, be imported into regenerator tank Body 37.The weak solution Sw for being imported into regenerator can body 37 is heated by heating part 31, is detached from refrigerant V and is become concentrated solution Sa. On the other hand, from the refrigerant V of weak solution Sw disengagings as regenerator refrigerant vapour Vg, via regenerator refrigerant vapour stream Road 35 is transported in condenser can body 47.The concentrated solution Sa generated in regenerator can body 37 flows in concentrated solution pipe 38, And heat exchange is carried out with weak solution Sw in solution heat exchanger 81, and after temperature reduces, reach concentrated solution spreading nozzle 12.
The concentrated solution Sa for reaching concentrated solution spreading nozzle 12 is spread towards cooling tube 11, is absorbed imported from evaporator 20 Evaporator refrigerant steam Ve, and concentration reduces, and becomes weak solution Sw.In absorber can body 17, concentrated solution Sa absorbs evaporation It is generated during device refrigerant vapour Ve and absorbs heat.The absorption heat generated is imported toward pipe 98 from cooling water and is flowed in cooling tube 11 Dynamic cooling water D is removed.The cooling water D flowed in cooling tube 11, which captures, absorbs heat, and temperature rise, and is connected to cooling water Pipe 58 flows out, and supplies to the condenser pipe 41 of condenser 40.The weak solution Sw generated in absorber can body 17 is accumulated in absorption In device can body 17.
The absorption refrigerating machine 1 of above-mentioned normal operation is carried out, in the load of the cold and hot air conditioner using cold water C etc. In the case of reducing and (also include and uncharge situation) without making the operating of absorption refrigerating machine 1, stop adding to heating part 31 Heat, and stop absorption refrigerating machine 1.In general, when stopping absorption refrigerating machine, absorbing liquid when temperature reduces in order to prevent Crystallization, the situation for being diluted operating are more.In dilution operates, in general, suitable refrigerant is made to be mixed into absorbing liquid to carry out Cycle, thus makes the absorbing liquid in absorption refrigerating machine be homogenized with non crystallized concentration.Then, in increase because of load etc. And in the case that the absorption refrigerating machine for being diluted absorbing liquid starts, absorbing liquid is heated and absorbing liquid is made to generate concentration Difference.In absorption refrigerating machine, after concentration difference as defined in absorbing liquid generation, the cold water of desirable temperature is obtained.In this way, inhaling Receive refrigeration machine in, after dilution operation start is made via start again and to normal operation during, be helpless to cold water The energy of manufacture is consumed.Although the energy expenditure is necessary in order to avoid the crystallization of absorbing liquid, from making absorption system It is waste in the case that absorbing liquid is not reduced to crystallization temperature until start again after cold stops.Therefore, exist In the absorption refrigerating machine 1 of present embodiment, in order to avoid above-mentioned waste, following control is carried out.
The flow chart that sequence when Fig. 2 and Fig. 3 is the stopping to absorption refrigerating machine 1 illustrates, Fig. 2 represent first half Point, Fig. 3 represents latter half.Fig. 2 and Fig. 3 merges sequence when representing a stopping.Hereinafter, referring especially to Fig. 2 and Fig. 3 Control during to the stopping of absorption refrigerating machine 1 illustrates, but when referring in explanation the composition of absorption refrigerating machine 1, suitably With reference to Fig. 1.For absorption refrigerating machine 1 in normal operation, the control of 60 side of control device forms each equipment of absorption refrigerating machine 1 Operating, side receive the halt instruction using the equipment (not shown) of cold water C from air conditioner etc..In other words, control device 60 judge whether halt instruction (S1).In the case of there is no halt instruction, again return to and judge whether to stop The process (S1) of instruction.In the case of there are halt instruction, stop the heating (S3) of heating part 31.
Next, control device 60 judges the concentration of absorbing liquid S (concentrated solution Sa) detected by strong solution concentration meter 53 Whether it is that dilution is performed more than concentration (S5).Herein, for the sake of safety, dilution execution is a concentration of preferably to carry out absorbing liquid with being not held off The diluted concentration of S, is equivalent to the first specified value.Whether it is that dilution is held in the concentration for judging to be detected by strong solution concentration meter 53 In process (S5) more than row concentration, in the case where deficiency dilutes and performs concentration, control device 60 judges that refrigerant is not mixed into Whether stopping time N is more than defined number (S7).Herein, refrigerant is not mixed into stopping time N and is, finally implement it is adjoint Refrigerant liquid Vf be mixed into absorbing liquid S dilution operating after and make absorption refrigerating machine 1 stop after, without refrigerant liquid Vf to Being mixed into for absorbing liquid S and make absorption refrigeration cycle stop number.In absorption refrigerating machine 1, in operation process, because of absorbing liquid The dispersing of S, the drop of absorbing liquid S is to refrigerant V there may be absorbing liquid S with regenerator refrigerant vapour Vg etc. System is mixed into.Absorbing liquid S is to the drop of the cooling performance for being mixed into the cold water C that may cause absorption refrigerating machine 1 of the system of refrigerant V It is low.Therefore, if making the system that refrigerant liquid Vf is mixed into absorbing liquid S, in the case where absorbing liquid S is mixed into the system of refrigerant V, The system that can the refrigerant liquid Vf comprising absorbing liquid S be imported to absorbing liquid S, carries out absorption refrigeration cycle later, and makes refrigeration Agent V evaporates, and the system for returning to refrigerant V, so as to purify the system of refrigerant V.Therefore, in absorption refrigerating machine 1, often When refrigerant, which is not mixed into stopping time N, at least becomes defined number, system that refrigerant liquid Vf is made to be mixed into absorbing liquid S is come Concentration of the absorbing liquid S in the system of refrigerant V is inhibited to rise.
In whether the concentration for judging to be detected by strong solution concentration meter 53 is to dilute the process (S5) for performing more than concentration, In the case where performing more than concentration for dilution, it is diluted operating (S11).Dilution operating (S11) carries out：It is molten by operating Liquid pump 19 makes the even concentration (hereinafter referred to as " solution stirring " of absorbing liquid S.), refrigerant liquid be mixed into valve 72 open regulation Time and the specified amount of refrigerant liquid Vf in condenser 40 is made to flow into concentrated solution pipe 38 (hereinafter referred to as " refrigerant transfer ".) Either or both of in the two.Solution stirring is carried out in the state of the heating for stopping heating part 31, so as to dense molten Liquid Sa and the concentration difference of weak solution Sw become smaller, and the concentration of concentrated solution Sa reduces, so as to which absorbing liquid S is avoided to crystallize.By into Row refrigerant is transferred, and so as to dilute the concentrated solution Sa in concentrated solution pipe 38 using refrigerant liquid Vf, and makes the reduction of its concentration, so as to Absorbing liquid S can be avoided to crystallize.In addition, by carrying out refrigerant transfer, what it is so as to purify refrigerant V as described above is System.
If being diluted operating (S11), control device 60 judges whether to implement refrigerant transfer (with the presence or absence of refrigeration Agent liquid Vf is mixed into absorbing liquid S's) (S12).Refrigerant transfer whether is implemented, can utilize whether refrigerant liquid is mixed into valve 72 opening stipulated times were judged.In the case where implementing refrigerant transfer, refrigerant is not mixed into stopping time N and is set For 0 (S13).In the case where refrigerant transfer is not carried out, stopping time N is not mixed into the refrigerant at its moment plus 1 (S14).If refrigerant is not mixed into stopping time N to be set as 0 (S13) or be not mixed into refrigerant stopping time N plus 1 (S14), then control device 60 makes absorption refrigerating machine 1 stop (S31).
Take a step back, judge refrigerant be not mixed into stopping time N whether be as defined in more than number process (S7), In the case of more than for defined number, refrigerant is not mixed into stopping time N and is set as 0 (S16) by control device 60, and is carried out (S17) is operated along with the dilution of refrigerant transfer, absorption refrigerating machine 1 is made to stop (S31).On the other hand, it is not mixed in refrigerant In the case of entering number as defined in stopping time N deficiencies, control device 60 is not mixed into stopping time N to the refrigerant at its moment and adds Upper 1 (S18).Later, control device 60 judges whether the concentration detected by strong solution concentration meter 53 is less than without diluted concentration (S19).Herein, without diluted concentration be even if without dilution operate there is no absorbing liquid S crystallization situation concentration, phase When in third specified value.Concentration is performed less than dilution without diluted concentration, in other words, third specified value is less than the first specified value. Whether it is less than in the concentration for judging to be detected by strong solution concentration meter 53 without in the process (S19) of diluted concentration, for need not In the case of more than diluted concentration (that is, in the case of not being less than without diluted concentration), control device 60 makes absorption refrigerating machine 1 It is standby to stop (S21).The standby stopping of absorption refrigerating machine 1 refers to be set to transport without the dilution operating of absorption refrigerating machine 1 Turn the situation of standby mode, refer to that the standby state of the mode of dilution operating, normal operation can be started as needed.
If make absorption refrigerating machine 1 is standby to stop (S21), as shown in figure 3, control device 60 is judged by concentrated solution thermometer Whether 51 temperature detected, which become dilution, performs below temperature (S22).Herein, dilution performs temperature and refers to along with absorbing liquid The reduction of S temperature and generate the temperature that the worry of the crystallization of absorbing liquid S increases, be equivalent to the second specified value.In addition, dilution performs In the present embodiment, the temperature that can be detected with ambient temperature meter 55 accordingly changes temperature (the second specified value).For For absorbing liquid S, concentration is higher to be crystallized in higher temperature, and concentration is lower to be crystallized in lower temperature.Absorption refrigerating machine 1 is just Often as the absorbing liquid S of higher temperature during operating, if absorption refrigerating machine 1 stops, the temperature with ambient enviroment is under It goes, there is no the situations less than ambient temperature.In other words, absorbing liquid S's is concentration, attached until the concentration of crystallization Closely accordingly change with ambient temperature, therefore, in the present embodiment, (ambient temperature meter 55 is examined with ambient temperature The temperature measured) dilution execution temperature (the second specified value) is accordingly set as variable.
Suction of the graph representation of Fig. 4 for ambient temperature (there is also the situations of referred to as " ambient temperature ") Receive the crystallisation concentration of liquid S and the example of the relationship of dilution execution temperature (the second specified value).In the graph in fig. 4, solid line Ls tables Show ambient temperature and the relationship of the crystallisation concentration of absorbing liquid S.It in the present embodiment, will be relative to the crystallization temperature of absorbing liquid S Dilution is defined as with defined value more than needed and performs temperature (the second specified value), in the graph in fig. 4, utilizes dotted line Lb tables Show.For example, the ambient temperature detected in ambient temperature meter 55 is in the case of 15 DEG C, and in the crystallisation concentration of absorbing liquid S When 60%, the dilution execution temperature (the second specified value) in the case of a concentration of the 60% of absorbing liquid is set as to 15 DEG C plus rule The temperature (being about 22 DEG C in the example shown in Figure 4) of fixed surplus capacity, for absorbing liquid S each concentration acquire dilution perform temperature The line chart of degree becomes dotted line Lb.Wherein, the concentration that defined surplus capacity can also be set as to absorbing liquid S gets over Gao Yue great, it is more low more It is variable as small, chain-dotted line Ld.
Fig. 2 and Fig. 3 is mainly returned again, continues to explain the sequence during stopping of absorption refrigerating machine 1.When judging by dense Whether the temperature that solution temperature meter 51 detects, which becomes to become to dilute in the process (S22) below dilution execution temperature, performs temperature In the case of below, control device 60 is diluted operating (S23).The dilution operates (S23) and above-mentioned dilution operating (S11) Solution stirring and refrigerant is carried out in the same manner either or both of to transfer in the two.If it is diluted operating (S23), then control device 60 judges whether to implement refrigerant transfer (S24).It, will in the case where implementing refrigerant transfer Refrigerant is not mixed into stopping time N and is set as 0 (S25), and absorption refrigerating machine 1 is made to stop (S31) later.Refrigerant transfer is being not carried out In the case of, into the process (S31) for directly stopping absorption refrigerating machine 1.
If absorption refrigerating machine 1 is made to stop (S31), control device 60 judges whether starting order again (S33). In the case of there is no starting order again, the process (S33) for judging whether starting order again is again returned to.Exist Again in the case of starting order, control device 60 carries out the starting again (S35) of absorption refrigerating machine 1.Absorption refrigerating machine 1 is again Secondary starting is following to be carried out：After confirming that refrigerant liquid is mixed into the closing of valve 72, solution pump 19, refrigerated medium pump 29, cooling water pump are started 91st, heating part 31 is heated in water supply pump 92.At this point, absorption refrigerating machine 1 carries out the dilution of absorbing liquid S and stopping, therefore not It is the state that the concentration distribution of absorbing liquid S can play the desirable ability of absorption refrigerating machine 1, therefore carries out in concentrated solution Sa The starting operation (S37) of concentration difference as defined in being generated between weak solution Sw.Defined concentration difference is can form and can manufacture The concentration difference of the absorption refrigeration cycle of the absorbing liquid S and refrigerant V of the cold water C of desirable temperature.During starting operation, Cold water C flows, but cold water C is not cooled to desirable temperature, therefore cold water C is not supplied to by the starting of water supply pump 92 To loads such as air conditioners.If carrying out starting operation, concentration difference is generated between concentrated solution Sa and weak solution Sw, is reached soon To normal operation (operating condition that desirable refrigerating capacity can be played).From start absorption refrigerating machine 1 again Moving to the state for reaching normal operation needs for quite a long time.
After the process (S21) for making 1 standby stopping of absorption refrigerating machine, in the temperature for judging to be detected by concentrated solution thermometer 51 Whether degree becomes in the process (S22) that dilution is performed below temperature, be not control dress in the case that dilution is performed below temperature It puts 60 and judges whether starting order again (S28).In the case of there is no starting order again, return is judged by dense molten Whether the temperature that liquid thermometer 51 detects becomes the process (S22) below dilution execution temperature.On the other hand, exist again In the case of starting order, control device 60 carries out the starting again (S29) of absorption refrigerating machine 1.Starting again herein with it is upper The process of starting again (S35) stated is following in the same manner to be carried out：After confirming that refrigerant liquid is mixed into the closing of valve 72, solution pump is started 19th, refrigerated medium pump 29, cooling water pump 91, water supply pump 92, heat heating part 31.Starting again (S29) herein does not make Absorption refrigerating machine 1 is diluted operating, but makes its standby stopping, therefore, in absorption refrigerating machine 1, concentrated solution Sa with it is dilute Concentration difference as defined in being generated between solution S w.Therefore, after (S29) is started again, without starting operation (with reference to process S37), normal operation can be moved to.
It takes a step back, whether is less than the process without diluted concentration in the concentration for judging to be detected by strong solution concentration meter 53 In (S19：With reference to Fig. 2), in the case of less than without diluted concentration, control device 60 judges whether starting order again (S20).In the case of there is no starting order again, the process for judging whether starting order again is again returned to (S20).On the other hand, in the case where there is starting order again, control device 60 carries out the starting again of absorption refrigerating machine 1 (S29).Later, as described above, without starting operation (with reference to process S37), and normal operation can be moved to.
However, after absorption refrigerating machine 1 just is set to setting place or in order to safeguard etc. and from absorption When refrigeration machine 1 has taken out absorbing liquid S and refrigerant V, there are absorbing liquid S and refrigerant V not to fit in absorption refrigerating machine 1 Situation.In this case, before absorption refrigerating machine 1 is acted, absorbing liquid S and refrigerant are injected into absorption refrigerating machine 1 V.It at this point, the surface due to the Inner Constitution component in absorption refrigerating machine 1 forms overlay film, can also be mixed into suitable molybdenum Absorbing liquid S.For molybdenum, when the concentration of absorbing liquid S is low, the dissolving into absorbing liquid S is promoted.Therefore, to absorption Refrigeration machine 1 injects absorbing liquid S and refrigerant V until by the defined duration of runs or by defined operating number (it is known as " to condition as defined in satisfaction " hereinafter, the two is merged.) until, it can also be in the normal operation from absorption refrigerating machine 1 When starting to stop the heating of heating part 31, no matter the value that strong solution concentration meter 53 detects, carry out stirring along with solution Mix and refrigerant transfer this both sides dilution operating.Wherein, operating number refers to the absorption from absorbing liquid S and refrigerant V The state that cycle stops starts the number for acting absorption cycle.It carries out stirring along with solution until condition as defined in satisfaction And in the case that refrigerant transfers the dilution operating of this both sides, as shown in figure 5, in the flow chart of Fig. 2 and Fig. 3, also may be used After the process (S3) of heating stopping of heating part 31 is made, to judge whether to meet defined condition (S4), be unsatisfactory for providing Condition in the case of be diluted the process (S11) of operating, in the case of condition as defined in satisfaction, into judge by Whether the concentration that strong solution concentration meter 53 detects is to dilute the process (S5) performed more than concentration.
The flow (sequence during stopping) of absorption refrigerating machine 1 described above, which typically relies on, is installed on control device 60 Program is controlled to perform.Therefore, it is possible to easily carry out the addition of a part for the change of the setting value in flow, process or province Slightly, upgrading etc., and the offer (distribution) of control program can be easily provided via wired or wireless network.
As described above, absorption refrigerating machine 1 according to the present embodiment, in the case where receiving halt instruction, And the concentration of concentrated solution Sa detected by strong solution concentration meter 53 be not dilution perform concentration (the first specified value), and freeze Agent be not mixed into stopping time N be not it is more than defined number in the case of, do not carry out the dilution of absorbing liquid S immediately, but standby Stop, later, do not become below dilution execution temperature in the temperature detected by concentrated solution thermometer 51 and receive to start again Instruction in the case of, can be without starting operation, but move to normal operation, therefore the dilution of absorbing liquid S can be reduced And the energy needed for starting operation, and the time from starting again to normal operation can be shortened.
In the above description, concentration of the absorbing liquid concentration correlation for the concentrated solution Sa of the outlet of regenerator 30, but remove It can also be set as except this：With the concentration dependent physical quantity of absorbing liquid S (temperature of the absorbing liquid S of the outlet of regenerator 30 and Density, the pressure of inside of regenerator 30 and dew-point temperature etc.), the concentration of weak solution Sw, the grade of refrigerant V, absorber 10 In absorbing liquid S grade, the cooling load rate of absorption refrigerating machine 1, the temperature of cooling water D, solution pump 19 or refrigerated medium pump 29 Deng conversion frequencies, heating part 31 heating amount (comprising heating adjustable valve aperture) etc. in monomer or they in Multiple combinations.
In the above description, temperature of the absorbing liquid temperature-related-magnitude for the concentrated solution Sa of the outlet of regenerator 30, but remove It can also be set as except this：The outlet of the wall surface temperature, absorber 10 of the concentrated solution pipe 38 near regenerator 30 can be illustrated The temperature of weak solution Sw or the difference of the temperature of concentrated solution Sa systems or the temperature and their crystallization temperature of weak solution Sw systems The directly related value of absorbing liquid temperature.Alternatively, it can also be set as not detecting the temperature of absorbing liquid S directly but can predict absorbing liquid The absorbing liquid temperature indirect correlation value of the temperature of S.As the example of absorbing liquid temperature indirect correlation value, absorption cycle can be enumerated Elapsed time after stopping (after operating standby mode is moved to).As absorbing liquid temperature-related-magnitude, absorbing liquid temperature is being used In the case of directly related value, the temperature of absorbing liquid S can be more correctly detected, and the knot for avoiding absorbing liquid S can be improved Brilliant possibility, so as to the simplify control in the case of using absorbing liquid temperature indirect correlation value.
In the above description, ambient temperature correlation is the atmospheric temperature near regenerator 30, but in addition to this It can also be set as temperature of outermost housing of absorption refrigerating machine 1 etc. and the relevant physical quantity of ambient temperature.
In the above description, dilution execution temperature (the second specified value) is accordingly variable with ambient temperature, but It can be set as independently (being set as low) value being determined for the sake of safety with ambient temperature.So, control can be simplified System.On the other hand, the dilution for the value being determined in being set as described above can be made to perform concentration (the first specified value) and need not The both sides of diluted concentration (third specified value) or either side perform temperature (the second specified value) in the same manner, with week with dilution Enclose that environment temperature is accordingly variable, defined surplus capacity in this case can independently be set as certain with the concentration of absorbing liquid S (with reference to the dotted line Lb in Fig. 4) can also accordingly change (with reference to the chain-dotted line Ld in Fig. 4) with the concentration of absorbing liquid S.
In the above description, it is not mixed into whether stopping time N is more than defined number (S7), to determine by refrigerant It is fixed whether to carry out the dilution transferred along with refrigerant, but it is not mixed into whether stopping time N is defined number instead of refrigerant More than, absorbing liquid S can also be judged whether to the refrigerant liquid Vf's for being accumulated in condenser 40 and/or evaporator 20 It is mixed into.In this case, can omit in Fig. 2 and Fig. 3 be not mixed into refrigerant the relevant processes of stopping time N (S12, S13, S14, S16, S18, S24, S25), it is adjoint into carrying out in the case that there are absorbing liquid S to the mixed of refrigerant liquid Vf The process (S17) of the dilution operating of refrigerant transfer, in the case that there is no absorbing liquid S to the mixed of refrigerant liquid Vf, Whether it is less than the process (S19) without diluted concentration into the concentration for judging to be detected by strong solution concentration meter 53.Wherein, if There are absorbing liquid S being mixed into refrigerant liquid Vf, densimeter, dew-point hygrometer etc. can be used to be detected.
In the above description, the composition that cooling water D is imported into condenser 40 after absorber 11 is imported into is instantiated, but Can be that the composition of absorber 11 is imported into after condenser 40 is imported into, or be imported into side by side absorber 10 with it is cold The composition of condenser 40.
In the above description, cooling water pump 91 and water supply pump 92 are not the inscapes of absorption refrigerating machine 1, but conduct The inscape of absorption refrigerating machine 1 can also have cooling water pump 91 and/or water supply pump 92.However, based on cooling water pump The cooling water D of the 91 flowings and cold water C flowed based on water supply pump 92, the usually item because of the place of setting absorption refrigerating machine 1 etc. Part is different and the differences such as the transport distance for supplying destination, flow that arrive, therefore preferably not by cooling water pump 91 and water supply pump 92 As the inscape of absorption refrigerating machine 1, and it is to enable the selected ability suitable for the setting place of absorption refrigerating machine 1 etc. Pump.
In the above description, for easy understanding, absorption refrigerating machine 1 is the composition of single-action, but can also apply to The absorption refrigerating machine of multiple effectiveness with multiple regenerators or with the different multiple evaporator/absorbers of operating pressure Absorption refrigerating machine.
In the above description, situation of the Absorption Refrigerator for absorption refrigerating machine is illustrated, but may be Absorb the absorption heat source machine of others that water chiller/heater, sorption type heat pump etc. carry out the absorption cycle of absorbing liquid S and refrigerant V.

Claims (12)

1. a kind of Absorption Refrigerator, by by supplying heating source form, absorbing liquid and the absorption cycle of refrigerant, come Temperature adjusting object fluid is cooled down or is heated,
It is characterized in that, have：
Solution pump flows the absorbing liquid so that the absorbing liquid is recycled in the inside of the Absorption Refrigerator；
Refrigerant liquid can be mixed into portion, and allowing hand over enables the liquid of the refrigerant to be mixed into is for what the absorbing liquid recycled The state of system, with the liquid of the refrigerant is not made to be mixed into the state of the system；
Absorbing liquid concentration correlation grasp portion grasps the concentration dependent absorbing liquid concentration correlation with the absorbing liquid；With And
Control device in the supply for stopping the heating source, controls the solution pump and the refrigerant liquid that can be mixed into Portion, in the absorbing liquid concentration correlation grasped by the absorbing liquid concentration correlation grasp portion more than the first specified value When, by carry out the solution pump action and can the liquid of the refrigerant implemented of the portion of being mixed by the refrigerant liquid At least one party being mixed into the two, come be diluted the dilution of the absorbing liquid operating, by the absorbing liquid concentration phase When the absorbing liquid concentration correlation that pass value grasp portion grasps is less than first specified value, without the dilution operating It is set to operating standby mode.
2. Absorption Refrigerator according to claim 1, which is characterized in that
Have around the relevant ambient temperature correlation of environment temperature around grasp and the Absorption Refrigerator Environment temperature correlation grasp portion,
First specified value is set as accordingly changing with the ambient temperature correlation.
3. Absorption Refrigerator according to claim 1 or 2, which is characterized in that
Have the absorbing liquid temperature-related-magnitude grasp portion grasped with the relevant absorbing liquid temperature-related-magnitude of temperature of the absorbing liquid,
The control device controls the solution pump and the refrigerant liquid that can be mixed into after the operating standby mode is set as Portion, in the absorption corresponding with the absorbing liquid temperature-related-magnitude grasped by the absorbing liquid temperature-related-magnitude grasp portion The temperature of liquid carries out the dilution operating when becoming below the second specified value.
4. Absorption Refrigerator according to claim 3, which is characterized in that
Have around the relevant ambient temperature correlation of environment temperature around grasp and the Absorption Refrigerator Environment temperature correlation grasp portion,
Second specified value is set as accordingly changing with the ambient temperature correlation.
5. Absorption Refrigerator according to claim 1 or 2, which is characterized in that
The control device is in the supply for stopping the heating source, what is grasped by the absorbing liquid concentration correlation grasp portion The absorbing liquid concentration correlation be less than the third specified value smaller than first specified value when, without it is described dilution operating and The operating standby mode is not set to, and is off the Absorption Refrigerator.
6. Absorption Refrigerator according to claim 5, which is characterized in that
Have around the relevant ambient temperature correlation of environment temperature around grasp and the Absorption Refrigerator Environment temperature correlation grasp portion,
The third specified value is set as accordingly changing with the ambient temperature correlation.
7. Absorption Refrigerator according to claim 1 or 2, which is characterized in that
The control device controls the refrigerant liquid that can be mixed into portion, be not accompanied by by the refrigerant liquid can be mixed into portion reality The liquid of the refrigerant applied is secondary to the stopping of mixed, the described absorption cycle of system that can be recycled for the absorbing liquid When number reaches defined number or detecting institute of the absorbing liquid into the part that the liquid of the refrigerant is supplied to stockpile State when being mixed into of refrigerant, and though by the absorbing liquid concentration correlation grasp portion grasp the absorbing liquid concentration correlation such as What, enables the liquid of the refrigerant be mixed into the system recycled for the absorbing liquid.
8. Absorption Refrigerator according to claim 5, which is characterized in that
The control device controls the refrigerant liquid that can be mixed into portion, be not accompanied by by the refrigerant liquid can be mixed into portion reality The liquid of the refrigerant applied is secondary to the stopping of mixed, the described absorption cycle of system that can be recycled for the absorbing liquid When number reaches defined number or detecting institute of the absorbing liquid into the part that the liquid of the refrigerant is supplied to stockpile State when being mixed into of refrigerant, and though by the absorbing liquid concentration correlation grasp portion grasp the absorbing liquid concentration correlation such as What, enables the liquid of the refrigerant be mixed into the system recycled for the absorbing liquid.
9. Absorption Refrigerator according to claim 1 or 2, which is characterized in that
The control device controls the solution pump and the refrigerant liquid that can be mixed into portion, with to the Absorption Refrigerator It injects after the absorbing liquid and the refrigerant until by the defined duration of runs or defined operating number, no By the absorbing liquid concentration correlation grasped by the absorbing liquid concentration correlation grasp portion how, stopping the heating During the supply in source, carry out along with the solution pump action and can the system implemented of the portion of being mixed by the refrigerant liquid The dilution that is mixed into the two of the liquid of cryogen to the system that can be recycled for the absorbing liquid operates.
10. Absorption Refrigerator according to claim 5, which is characterized in that
The control device controls the solution pump and the refrigerant liquid that can be mixed into portion, with to the Absorption Refrigerator It injects after the absorbing liquid and the refrigerant until by the defined duration of runs or defined operating number, no By the absorbing liquid concentration correlation grasped by the absorbing liquid concentration correlation grasp portion how, stopping the heating During the supply in source, carry out along with the solution pump action and can the system implemented of the portion of being mixed by the refrigerant liquid The dilution that is mixed into the two of the liquid of cryogen to the system that can be recycled for the absorbing liquid operates.
11. a kind of control program, control rely on by supply heating source and the absorption cycle of form, absorbing liquid and refrigerant come The Absorption Refrigerator that temperature adjusting object fluid is cooled down or heated, which is characterized in that have：
Absorbing liquid concentration correlation grasps process, grasps the concentration dependent absorbing liquid concentration correlation with the absorbing liquid；
When the supply of the heating source stops, the process palm is being grasped by the absorbing liquid concentration correlation for dilution operating process When the absorbing liquid concentration correlation held is more than the first specified value, carried out by carrying out at least one party in following the two Dilute the dilution operating of the absorbing liquid：Flow the absorbing liquid so that the absorbing liquid is in the Absorption Refrigerator Portion recycles and enables the liquid of the refrigerant to be mixed into the system recycled for the absorbing liquid；And
Standby process is operated, in the supply for stopping the heating source, the process palm is being grasped by the absorbing liquid concentration correlation When the absorbing liquid concentration correlation held is less than first specified value, it is set to operating without the dilution operating and treats Machine state.
12. a kind of control method of Absorption Refrigerator, control relies on by supplying heating source form, absorbing liquid and refrigeration The absorption cycle of agent is come Absorption Refrigerator that temperature adjusting object fluid is cooled down or heated, which is characterized in that tool It is standby：
Absorbing liquid concentration correlation grasps process, grasps the concentration dependent absorbing liquid concentration correlation with the absorbing liquid；
In the supply for stopping the heating source, the process palm is being grasped by the absorbing liquid concentration correlation for dilution operating process When the absorbing liquid concentration correlation held is more than the first specified value, carried out by carrying out at least one party in following the two Dilute the dilution operating of the absorbing liquid：Flow the absorbing liquid so that the absorbing liquid is in the Absorption Refrigerator Portion recycles and enables the liquid of the refrigerant to be mixed into the system recycled for the absorbing liquid；And
Standby process is operated, in the supply for stopping the heating source, the process palm is being grasped by the absorbing liquid concentration correlation When the absorbing liquid concentration correlation held is less than first specified value, it is set to operating without the dilution operating and treats Machine state.
CN201711275357.0A 2016-12-28 2017-12-06 Absorption chiller, control program, and control method for absorption chiller Active CN108253656B (en)

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