CN109253557A - Absorption Refrigerator - Google Patents

Absorption Refrigerator Download PDF

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Publication number
CN109253557A
CN109253557A CN201810698100.4A CN201810698100A CN109253557A CN 109253557 A CN109253557 A CN 109253557A CN 201810698100 A CN201810698100 A CN 201810698100A CN 109253557 A CN109253557 A CN 109253557A
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CN
China
Prior art keywords
refrigerant
absorption refrigerator
temperature
heating source
physical quantity
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Granted
Application number
CN201810698100.4A
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Chinese (zh)
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CN109253557B (en
Inventor
青山淳
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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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Priority claimed from JP2017138060A external-priority patent/JP2019020027A/en
Priority claimed from JP2017138059A external-priority patent/JP6922147B2/en
Application filed by Ebara Refrigeration Equipment and Systems Co Ltd filed Critical Ebara Refrigeration Equipment and Systems Co Ltd
Publication of CN109253557A publication Critical patent/CN109253557A/en
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Publication of CN109253557B publication Critical patent/CN109253557B/en
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Classifications

    • 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
    • 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

Absorption Refrigerator provided by the invention, it can be ensured that necessary ability and realize miniaturization.The absorption cycle of the absorbing liquid (S) and refrigerant (V) that are made up of supply heating source (H), the Absorption Refrigerator (1) for carrying out cooling or the heating of temperature adjusting object fluid (C) has: heat input regulating device (33) adjusts the amount of the unit time of the heating source (H) supplied to Absorption Refrigerator (1)；Control device (60) controls heat input regulating device (33).Upper limit value of the control device (60) as the amount of the unit time of the heating source (H) of supply to Absorption Refrigerator (1), the rated limit value and the excessive upper limit value bigger than rated limit value being stored under rated condition, and heat input regulating device (33) usually are controlled in the range of rated limit value, receiving when exporting the instruction operated, heat input regulating device (33) are controlled in the range of excessive upper limit value with bigger than the rated output under rated condition.

Description

Absorption Refrigerator
Technical field
The present invention relates to Absorption Refrigerator, more particularly to can ensure necessary ability and realize the suction of miniaturization Receipts formula refrigeration machine.
Background technique
The absorption system of the cooling of cold water or the heating of hot water is carried out by the absorption cycle of absorbing liquid and refrigerant Cold, it is defeated thus, it is possible to carry out by adjusting the heat input (heating fluid import volume or quantity combusted) of input regenerator It adjusts out.Absorption Refrigerator usually controls heat input (example in a manner of being no more than specified 100% to regenerator investment heat Such as, referring to patent document 1).In addition, Absorption Refrigerator has the temperature of detection cold water or hot water, and make the temperature detected As the mode of target temperature, the type of the heat input of control input regenerator (for example, referring to patent document 2).
Patent document 1: No. 3630775 bulletins of Japanese Patent No.
Patent document 2: Japanese Unexamined Patent Publication 2002-340429 bulletin
Absorption Refrigerator is usually when with specified 100% operating, to cope with the maximum heating load handled Mode select capacity.However, the chance of processing maximum heating load accounts for about the 1% of the duration of runs, and localised load operates Account for the overwhelming majority of the duration of runs.It is selected to handle maximum heating load with specified operating due to for few chance Capacity, it cannot be said that be efficient.
Summary of the invention
The present invention is in view of above-mentioned project, and it is an object of the present invention to provide one kind can ensure necessary ability and realize miniaturization Absorption Refrigerator.
To achieve the goals above, such as shown in Figure 1, the 1st aspect of the present invention Absorption Refrigerator, by logical Cross supply heating source H and the absorption cycle of the absorbing liquid S that constitutes and refrigerant V, carry out temperature adjusting object fluid C cooling or Heating, the Absorption Refrigerator 1 have: heat input regulating device 33, the heating source H that opposite Absorption Refrigerator 1 supplies The amount of unit time be adjusted；With control device 60, heat input regulating device 33 is controlled, control device 60 is constituted Are as follows: the upper limit value of the amount of the unit time of the heating source H as supply to Absorption Refrigerator 1 is stored under rated condition Rated limit value and excessive upper limit value greater than rated limit value, and usually heat input is controlled in the range of rated limit value Quantity regulating device 33, should be with bigger than the rated output under rated condition when exporting the instruction operated, excessive receiving Heat input regulating device 33 is controlled in the range of upper limit value.
If constituting in this way, when can control heat input regulating device in the range of excessive upper limit value, selecting can The capacity of maximum heating load is handled, so as to ensure necessary ability and realize the miniaturization of Absorption Refrigerator.
In addition, for example as shown in Figure 1, the Absorption Refrigerator of the 2nd aspect of the present invention aforementioned present invention first party On the basis of the Absorption Refrigerator 1 of formula, have: regenerator 30, using heating source H to the absorbing liquid after absorbing refrigerant Ve Sw is heated, and refrigerant Vg is made to be detached from and generate the concentrated solution Sa of concentration rising from absorbing liquid Sw；Absorber 10 passes through suction Liquid Sa is received to absorb the steam Ve of refrigerant and generate the weak solution Sw after concentration reduction；And weak solution flow regulator 19, Its flow for directly or indirectly adjusting the weak solution Sw flowed out from absorber 10, the Absorption Refrigerator 1 are configured to make to inhale It receives liquid Sw, Sa to be recycled by regenerator 30 and absorber 10, control device 60 is receive should be with bigger than rated output Output operating instruction when, control weak solution flow regulator 19 so that from absorber 10 flow out weak solution Sw stream It measures than increasing when operating under rated condition.
If constituting in this way, when with the output operating bigger than rated output, being able to suppress absorbing liquid becomes overrich, and It is able to suppress the rising of internal regenerator pressure, so as to inhibit the phenomenon that not making to operate continuation.
In addition, for example as shown in Figure 1, the Absorption Refrigerator of the 3rd aspect of the present invention aforementioned present invention first party On the basis of the Absorption Refrigerator 1 of formula, have: regenerator 30, using heating source H to the absorbing liquid after absorbing refrigerant Ve Sw is heated, and refrigerant Vg is made to be detached from from absorbing liquid Sw and generate the concentrated solution Sa after concentration rises；Absorber 10, passes through Absorbing liquid Sa absorbs the steam Ve of refrigerant and generates the weak solution Sw after concentration reduction；Concentrated solution flow regulator 15, The flow of the concentrated solution Sa flowed out from regenerator 30 is directly or indirectly adjusted, the Absorption Refrigerator 1 is configured to make to absorb Liquid Sw, Sa are recycled by regenerator 30 and absorber 10, and control device 60 is receive should be with bigger than rated output When exporting the instruction of operating, concentrated solution flow regulator 15 is controlled, so that the flow of the concentrated solution Sa flowed out from regenerator 30 Than increasing when operating under rated condition.
If constituting in this way, when with the output operating bigger than rated output, being able to suppress absorbing liquid becomes overrich, and It is able to suppress the rising of internal regenerator pressure, so as to inhibit the phenomenon that not making to operate continuation.
If the Absorption Refrigerator of the 4th aspect of the present invention is in aforementioned present invention in addition, for example indicating referring to Fig.1 On the basis of first method to the Absorption Refrigerator 1 of either Third Way formula, control device 60 is receive should be with When the instruction of the output operating bigger than rated output, by the temperature of the temperature adjusting object fluid C flowed out from Absorption Refrigerator 1 Target value changed to the direction that the temperature difference of itself and the temperature adjusting object fluid C for importeding into Absorption Refrigerator 1 reduce.
If constituting in this way, when with the output operating bigger than rated output, being able to suppress absorbing liquid becomes overrich, thus It is able to suppress the case where operating can not be made to continue.
In addition, for example as shown in Figure 1, the Absorption Refrigerator of the 5th aspect of the present invention aforementioned present invention first party On the basis of formula to the Absorption Refrigerator 1 of either fourth way formula, has condenser 40, will be detached from from regenerator 30 The steam Vg of refrigerant import, and make the cooling condensation of steam Vg of refrigerant using cooling water D and generate refrigerant liquid Vf, institute It states regenerator 30 and the absorbing liquid Sw for absorbing refrigerant Ve is heated using heating source H, keep refrigerant Vg de- from absorbing liquid Sw From and generate the concentrated solution Sa of concentration rising, control device 60 is receiving should be with the finger of bigger than rated output output operating When enabling, the cooling water flow regulating device 91 that the flow of cooling water D is adjusted is controlled, so as to imported into the cold of condenser 40 But increase when operating under the flow-rate ratio rated condition of water D.
If constituting in this way, when with the output operating bigger than rated output, being able to suppress absorbing liquid becomes overrich, thus It is able to suppress the case where operating can not be made to continue.
If the Absorption Refrigerator of the 6th aspect of the present invention is in aforementioned present invention in addition, for example indicating referring to Fig.1 On the basis of the Absorption Refrigerator 1 of 5th mode, control device 60 is being received and transported with the output bigger than rated output When the instruction turned, the cooling water temperature adjusting device 93 that the temperature of cooling water D is adjusted is controlled, so as to imported into condenser The temperature of 40 cooling water D when operating under rated condition than reducing.
If constituting in this way, when with the output operating bigger than rated output, being able to suppress absorbing liquid becomes overrich, thus It is able to suppress the case where operating can not be made to continue.
In addition, for example as shown in Figure 1, the Absorption Refrigerator of the 7th aspect of the present invention aforementioned present invention first party On the basis of formula to the Absorption Refrigerator 1 of either fourth way formula, has condenser 40, will be detached from from regenerator 30 The steam Vg of refrigerant import, and make the cooling condensation of steam Vg of refrigerant using cooling water D and generate refrigerant liquid Vf, institute It states regenerator 30 and the absorbing liquid Sw after absorbing refrigerant Ve is heated using heating source H, make refrigerant Vg from absorbing liquid Sw It is detached from and generates the concentrated solution Sa of concentration rising, control device 60 is receive should be with bigger than rated output output operating When instruction, the cooling water temperature adjusting device 93 that the temperature of cooling water D is adjusted is controlled, so as to imported into condenser 40 The temperature of cooling water D when operating under rated condition than reducing.
If constituting in this way, when with the output operating bigger than rated output, being able to suppress absorbing liquid becomes overrich, thus It is able to suppress the case where operating can not be made to continue.
If the Absorption Refrigerator of the 8th aspect of the present invention is in aforementioned present invention in addition, for example indicating referring to Fig.1 On the basis of first method to the Absorption Refrigerator 1 of either the 7th mode formula, control device 60 is constituted are as follows: should be with When the instruction that the output bigger than rated output operates disappears, in the instruction that should be operated from reception with the output bigger than rated output Or it should be super with the time cumulation of the instruction of the output operating bigger than rated output receiving when have passed through the defined time When having spent the defined cumulative time, heat input regulating device 33 is controlled in the range of rated limit value.
If constituting in this way, by efficiency than being reduced when operating with rated output, with the output bigger than rated output Operating is suppressed in the defined time or in the defined cumulative time, therefore is able to suppress the reduction of efficiency.
In addition, for example as shown in Figure 1, the Absorption Refrigerator of the 9th aspect of the present invention aforementioned present invention first party On the basis of formula to the Absorption Refrigerator 1 of either eighth mode formula, have: temperature adjusting object fluid temperature (F.T.) test section 54, detect the temperature of the temperature adjusting object fluid C at base position；Monitor physical quantity detection unit 16,25,45,51,53, 55, in order to carry out the operating appropriate of Absorption Refrigerator 1, more than one physics of the monitoring physical quantity detection unit to monitoring Amount is detected；And security control unit 65, in the value detected by monitoring physical quantity detection unit 16,25,45,51,53,55 Be more than allow upper limit value when, the security control unit make Absorption Refrigerator 1 operating stop or will be to absorption system The amount of the unit time for the heating source H that cold 1 supplies is limited to defined amount, and control device 60 calculates: will adjusted by temperature When the unit for the heating source H that the temperature that subject fluid temperature detecting part 54 detects should import when being set as predetermined temperature Between amount and the value detected by monitoring physical quantity detection unit 16,25,45,51,53,55 become in security control unit 65 The amount of the unit time for the heating source H that should be imported when the upper limit value of middle setting, and heat input regulating device 33 is controlled, so as to Minimum in the amount of the unit time of calculated heating source H is imported into Absorption Refrigerator 1.
In the past, exist in order to avoid absorbing liquid knot in the case that the concentration of the absorbing liquid in absorption cycle is denseer than assumed value Crystalline substance, and it is designed as the case where stopping operating or making the safety device movement of heat input of limitation input regenerator, but usually Rarely having the concentration of absorbing liquid to be higher than as assumed value has been more than the operating of rated capacity.If however being set because incondensable gas is mixed into Standby interior, pollution of heat-transfer pipe etc. makes ability be difficult to play, then there may be the operating below of even rated capacity, safety devices Work, also can not continuous running the case where.
If constituting in this way, control for the value detected by monitoring physical quantity detection unit become the upper limit value allowed hereinafter, So as to make Absorption Refrigerator continuous running.
In order to provide the Absorption Refrigerator for capableing of continuous running, such as shown in Figure 1, the 10th aspect of the present invention suction The absorption cycle of absorbing liquid S and refrigerant V that receipts formula refrigeration machine is constituted by means of supply heating source H, carry out temperature adjusting The cooling or heating of subject fluid C, the Absorption Refrigerator 1 have: heat input regulating device 33 is adjusted to absorption The amount of the unit time for the heating source H that refrigeration machine 1 supplies；Temperature adjusting object fluid temperature (F.T.) test section 54 is detected in benchmark The temperature of temperature adjusting object fluid C at position；Physical quantity detection unit 16,25,45,51,53,55 is monitored, in order to be absorbed The operating appropriate of formula refrigeration machine 1, the monitoring physical quantity detection unit detect the more than one physical quantity of monitoring；Safety Control unit 65 has been more than the upper limit allowed in the value detected by monitoring physical quantity detection unit 16,25,45,51,53,55 When value, stop the operating of Absorption Refrigerator 1 or by the unit time of the heating source H supplied to Absorption Refrigerator 1 Amount is limited to defined amount；And control device 60, it calculates: will detected by temperature adjusting object fluid temperature (F.T.) test section 54 The amount of the unit time for the heating source H that temperature out should import when being set as predetermined temperature and by monitoring physical quantity The value that test section 16,25,45,51,53,55 detects should import when becoming the upper limit value set in security control unit 65 Heating source H unit time amount, and heat input regulating device 33 is controlled, so as to by the unit of calculated heating source H Minimum in the amount of time imports Absorption Refrigerator 1.
If constituting in this way, control for the value detected by monitoring physical quantity detection unit become the upper limit value allowed hereinafter, So as to make Absorption Refrigerator continuous running.
In addition, for example as shown in Figure 1, the Absorption Refrigerator of the 11st aspect of the present invention is the 9th of aforementioned present invention On the basis of the Absorption Refrigerator 1 of mode or the tenth mode, by the physical quantity structure of the detection of monitoring physical quantity detection unit 51,53 At least one party of concentration as temperature and absorbing liquid Sa including absorbing liquid Sa.
If constituting in this way, absorbing liquid crystallization can be avoided, and make Absorption Refrigerator continuous running.
In addition, for example as shown in Figure 1, the Absorption Refrigerator of the 12nd aspect of the present invention is the 9th of aforementioned present invention On the basis of mode to the Absorption Refrigerator 1 of either the 11st mode formula, have: regenerator 30 utilizes heating source H Absorbing liquid Sw after absorption refrigerant Ve is heated, refrigerant Vg is made to be detached from from absorbing liquid Sw and generate the dense of concentration rising Solution S a；And absorber 10, the weak solution Sw of concentration reduction is generated by the steam Ve that absorbing liquid Sa absorbs refrigerant, By the physical quantity that monitoring physical quantity detection unit 55 detects be configured to include: regenerator 30 internal pressure or with regenerator 30 The internal pressure or physics relevant to the internal pressure of absorber 10 of the relevant physical quantity of internal pressure and absorber 10 At least one party of amount.
If constituting in this way, the internal pressure that can be avoided Absorption Refrigerator excessively increases, absorption so as to make Refrigeration machine continuous running.
In addition, for example as shown in Figure 1, the Absorption Refrigerator of the 13rd aspect of the present invention is the 9th of aforementioned present invention On the basis of mode to the Absorption Refrigerator 1 of either the 12nd mode formula, have refrigerant liquid reservoir 23,43, The liquid that is, refrigerant liquid Vf of storing refrigerant V, by monitoring physical quantity detection unit 25,45 detect physical quantity be configured to include It is stored in the liquid level of the refrigerant liquid Vf of refrigerant liquid reservoir 23,43.
If constituting in this way, the concentration of absorbing liquid can be speculated, so as to inhibit absorbing liquid to crystallize.
In addition, for example as shown in Figure 1, the Absorption Refrigerator of the 14th aspect of the present invention is the 9th of aforementioned present invention On the basis of mode to the Absorption Refrigerator 1 of either the 13rd mode formula, has absorbing liquid reservoir 13, storage is inhaled Liquid Sw is received, is configured to include the absorbing liquid for being stored in absorbing liquid reservoir 13 by the physical quantity that monitoring physical quantity detection unit 16 detects The liquid level of Sw.
If constituting in this way, the concentration of absorbing liquid can be speculated, so as to inhibit absorbing liquid to crystallize.
In accordance with the invention it is possible to when controlling heat input regulating device in the range of excessive upper limit value, it is selected to locate The capacity for managing maximum heating load, so as to ensure necessary ability, and realizes the miniaturization of Absorption Refrigerator.
Detailed description of the invention
Fig. 1 is the system diagram of the signal of the absorption refrigerating machine of embodiments of the present invention.
Fig. 2 is to avoiding instruction of the absorption refrigerating machine based on safety control unit as far as possible and the stream that is illustrated of the control that stops Cheng Tu.
Fig. 3 be to avoid instruction of the absorption refrigerating machine based on safety control unit as far as possible and the control that stops be illustrated when Sequence figure.
Description of symbols: 1 ... absorption refrigerating machine；10 ... absorbers；15 ... concentrated solution regulating valves；19 ... solution pumps； 25 ... evaporator refrigerant liquidometers；30 ... regenerators；33 ... heating source regulating valves；40 ... condensers；45 ... condensers refrigeration Agent liquidometer；51 ... concentrated solution thermometers；53 ... strong solution concentration meters；54 ... cold water temperature meters；55 ... regenerator pressure meters； 60 ... control devices；65 ... safety control units；91 ... cooling water pumps；93 ... cooling towers；C ... cold water；D ... cooling water；H ... heating Source；S ... absorbing liquid；Sa ... concentrated solution；Sw ... absorbing liquid；V ... refrigerant；Ve ... evaporator refrigerant steam；Vf ... refrigerant Liquid；Vg ... regenerator refrigerant vapour
Specific embodiment
Hereinafter, the embodiments of the present invention will be described with reference to the drawings.In addition in the various figures, to same to each other or phase When component mark same or similar appended drawing reference and the repetitive description thereof will be omitted.
In the present specification, " Absorption Refrigerator " be by regenerator supply heating source and constitute based on regenerator, The absorption cycle of condenser, absorber, evaporator etc., and temperature adjusting object fluid is cooled down or heated is absorption The general name of heat source machine, comprising: (cooled as heating source is constituted absorption refrigeration cycle to regenerator supply and supplies cold water Temperature adjusting object fluid) mechanical absorption refrigerating machine, as supplying heating source to regenerator constitute absorption cycle And supply the machinery of cold water (cooled temperature adjusting object fluid) and/or hot water (the temperature adjusting object fluid being heated) Absorption water chiller/heater and as by heating source supply to regenerator and constitute sorption type heat pump circulation, and using evaporator from Heat source water recycling heat, thus at least supplies the mechanical sorption type heat pump for being absorbed the temperature adjusting object fluid of device heating.Hereinafter, Absorption refrigerating machine to Absorption Refrigerator as a mode is illustrated.
Firstly, being illustrated referring to Fig.1 to the absorption refrigerating machine of embodiments of the present invention 1.Fig. 1 is absorption refrigerating machine 1 Signal system diagram.Absorption refrigerating machine 1 has absorber 10, steams as the primary structure 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 on one side carry out phase change, while recycle, to carry out hot movement, make the temperature of the cold water C as temperature adjusting object fluid Reduced equipment.In the following description, about absorbing liquid, in order to become easy the difference on absorption refrigeration cycle, and root According to the position on character, absorption refrigeration cycle, referred to as " weak solution Sw ", " concentrated solution Sa " etc., but when unrelated with character etc., always Referred to as " absorbing liquid S ".Further with regards to refrigerant, in order to become easy the difference on absorption refrigeration cycle, and according to character, suction Receive the position in refrigeration cycle, referred to as " evaporator refrigerant steam Ve ", " regenerator refrigerant vapour Vg ", " refrigerant liquid Vf " Deng, but when unrelated with character etc., collectively referred to as " refrigerant V ".In the present embodiment, use LiBr aqueous solution as absorbing liquid S (mixture of absorbent and refrigerant), uses water (H2O it) is used as refrigerant V, however, not limited to this, other also can be used The combination of refrigerant, solution (absorbent).
Absorber 10 is the equipment that the evaporator refrigerant steam Ve generated in evaporator 20 is absorbed using concentrated solution Sa.It inhales Receipts device 10 includes the cooling tube 11 as the cooling water flow path of Cooling Water D flowing in the inside of absorber tank body 17 and will be dense The concentrated solution spreading nozzle 12 that solution S a is spread towards the outer surface of cooling tube 11.Concentrated solution spreading nozzle 12 is so that is spread is dense The mode that solution S a is fallen on cooling tube 11 is disposed in the top of cooling tube 11.Absorber 10 is configured to utilize the concentrated solution spread Sa absorbs evaporator refrigerant steam Ve, so that the weak solution Sw that concentration reduces to be stored in the storage of 17 lower part of absorber tank body Portion 13, and capture the absorption heat generated when concentrated solution Sa absorbs evaporator refrigerant steam Ve using cooling water D.Absorber 10 have the weak solution liquidometer 16 detected to the liquid level of the weak solution Sw in reservoir 13.
Evaporator 20 is that refrigerant liquid Vf is made to evaporate and generate evaporator refrigerant steam Ve using the heat of cold water C, by This carries out cooling equipment to cold water C.Evaporator 20 includes cold as flowing for cold water C in the inside of evaporator tank body 27 The evaporation tube 21 on water flow road and the refrigerant liquid spreading nozzle 22 for spreading refrigerant liquid Vf towards the outer surface of evaporation tube 21. Refrigerant liquid spreading nozzle 22 is disposed in the upper of evaporation tube 21 in the mode for falling on the refrigerant liquid Vf spread on evaporation tube 21 Side.Evaporator 20 includes refrigerant liquid pipe 28, will be stored in the refrigerant liquid Vf of the reservoir 23 of 27 lower part of evaporator tank body It guides to refrigerant liquid spreading nozzle 22；Refrigerant liquid Vf in refrigerant liquid pipe 28 is delivered to refrigeration by refrigerated medium pump 29 Agent liquid spreading nozzle 22.In addition, evaporator 20 has the evaporation detected to the liquid level of the refrigerant liquid Vf in reservoir 23 Device refrigerant level meter 25.Evaporator 20, which is configured to capture from the cold water C flowed in evaporation tube 21, is disseminated to evaporation tube 21 The refrigerant liquid Vf of outer surface evaporates and becomes the heat of gasification of evaporator refrigerant steam Ve, thus cools down to cold water C, and Refrigerant liquid Vf unevaporated in the refrigerant liquid Vf of distribution is stored in the reservoir 23 of evaporator tank body 27.
In the present embodiment, absorber 10 is configured adjacently with evaporator 20, and the top of absorber tank body 17 and steaming Send out the top connection of device tank body 27.According to this structure, the evaporator system that can will be generated in the inside of evaporator tank body 27 Refrigerant vapor Ve is directed to the inside of absorber tank body 17.The cooling for importing cooling water D is connected in one end of cooling tube 11 Water inlet 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 suction Receive the cooling water backhaul pipe 98 outside refrigeration machine 1.Cooling water backhaul pipe 98 is connected to the cooling tower 93 outside absorption refrigerating machine 1.It is cooling The rotation speed that tower 93 is configured to fan is variable, by suitably changing the rotation speed of fan, so as to change cooling water D Temperature.Cooling tower 93 is equivalent to cooling water temperature adjusting device.It is equipped with outside absorption refrigerating machine 1 in cooling water backhaul pipe 98 Cooling water pump 91.Cooling water pump 91, which is configured to rotation speed, can be changed, by suitably changing rotation speed, so as to change row The flow of cooling water D out.Cooling water pump 91 is equivalent to cooling water flow regulating device.Absorption refrigerating machine 1 is configured to by cold But the operating of water pump 91 flows cooling water D in cooling tube 11.It is connected in one end of evaporation tube 21 and imports cold water C Cold water inlet pipe 21a is connected with the cooling water outlet pipe 21b for flowing out cold water C in the other end.In the present embodiment, in cold water Outlet 21b is provided with the cold water temperature meter 54 as temperature adjusting object fluid temperature (F.T.) test section.That is, in present embodiment In, the outlet of absorption refrigerating machine 1 becomes base position.The cold water outside absorption refrigerating machine 1 is connected in cold water inlet pipe 21a to return Pipe 95.The water supply pump 92 outside absorption refrigerating machine 1 is equipped in cold water recurrent canal 95.Absorption refrigerating machine 1 is configured to pass through water supply pump 92 operating flows cold water C in evaporation tube 21.The cold water backhaul outside absorption refrigerating machine 1 is connected in cooling water outlet pipe 21b Pipe 96.
Regenerator 30 is that weak solution Sw is imported and heated, and the refrigerant V in weak solution Sw is thus made to be detached from and give birth to At the equipment of concentrated solution Sa.In regenerator 30, the refrigerant V being detached from from weak solution Sw becomes the state of steam, by the refrigeration The steam of agent V is known as regenerator refrigerant vapour Vg.Regenerator 30 includes 31 and of heating part heated to weak solution Sw The regenerator tank body 37 that the absorbing liquid S of importing is stored.Heating part 31 is disposed in the inside of regenerator tank body 37.Heating part 31 heat for being typically configured as the combustion heat using burner, the steam being externally introduced, hot water etc. add absorbing liquid S Heat.The heating source fluid hose 32 for being provided as the heating source fluid H flowing of heating source is connected in heating part 31.Heating source fluid H The typically fuel fluids such as using gas, oil in the case where heating part 31 generates the combustion heat of burner, at heating part 31 In the case where discharging the heat that the fluid being externally introduced is possessed, fluid is heated using steam, hot water etc..In heating source fluid hose 32 are equipped with the heating source regulating valve 33 that the flow for the heating source fluid H for being flowed into heating part 31 is adjusted.Heating source tune Section valve 33 is equivalent to heat input regulating device.Regenerator 30 is provided with the pressure to the gas phase portion of the inside of regenerator tank body 37 The regenerator pressure meter 55 that power is detected.The weak solution pipe for importing weak solution Sw is connected in the bottom of regenerator tank body 37 18, the concentrated solution pipe 38 for the concentrated solution Sa outflow for making to generate is connected in upper side.Regenerator 30 is constituted are as follows: from regenerator tank The weak solution Sw that the bottom of body 37 flows into is heated the heating of portion 31, on one side rising its temperature, gradually on one side to be concentrated and as dense Solution S a, the concentrated solution Sa after reaching the liquid level of concentrated solution pipe 38 are flowed out from regenerator tank body 37.It is able to use tubular regeneration Device, cigarette tube shaped regenerator, liquid tube shaped regenerator etc. are used as regenerator 30.
Condenser 40 is will to import in regenerator 30 from the regenerator refrigerant vapour Vg that weak solution Sw evaporates and make it It cools down and condenses, thus the equipment for generating the refrigerant liquid Vf conveyed to evaporator 20.Condenser 40 is in condenser tank body 47 Inside has the condenser pipe 41 of the component as the flow path for forming cooling water D.Condenser 40 is configured to the refrigerant liquid that will be generated Vf is stored in the reservoir 43 of 47 lower part of condenser tank body.Condenser 40 has the liquid level to the refrigerant liquid Vf in reservoir 43 The condenser refrigerant liquidometer 45 detected.One end, which is connected with, in one end of condenser pipe 41 is connected to the cold of cooling tube 11 But the other end of water communicating pipe 58.The cooling water outlet pipe 41b for flowing out cooling water D is connected in the other end of condenser pipe 41. The cooling water recurrent canal 99 outside absorption refrigerating machine 1 is connected in cooling water outlet pipe 41b.Cooling water recurrent canal 99 is connected to absorption Cooling tower 93 outside refrigeration machine 1.According to this structure, it is cooled to be configured to the cooling water D flowed in cooling water recurrent canal 99 Tower 93 is cooling and supplies to cooling water backhaul pipe 98.
Condenser tank body 47, which is matched, is set as close with regenerator tank body 37.In the present embodiment, regenerator tank body 37 is upper Portion is connected to the top of condenser tank body 47 via regenerator refrigerant vapour flow path 35.Condenser 40 is configured to via regenerator Refrigerant vapour flow path 35 imports regenerator refrigerant vapour Vg from regenerator 30, takes the cooling water D flowed in condenser pipe 41 by force The heat for taking regenerator refrigerant vapour Vg makes regenerator refrigerant vapour Vg condense and become refrigerant liquid Vf.In this embodiment party In formula, condenser tank body 47 and regenerator tank body 37 are disposed in the top of evaporator tank body 27 and absorber tank body 17.Condenser The reservoir 43 and evaporator tank body 27 of tank body 47 are constituted are as follows: connected by condensating refrigerant liquid pipe 48, and can using the impetus and The difference of the internal pressure of 27 the two of reservoir 43 and evaporator tank body, the refrigerant liquid Vf in condenser tank body 47 is guided to evaporator In tank body 27.
The reservoir 13 and regenerator tank body 37 of absorber tank body 17 are connected by weak solution pipe 18.It is arranged in weak solution pipe 18 There is solution pump 19.Solution pump 19 is constituted are as follows: rotation speed is variable, can change discharge and suitably changing rotation speed The flow of weak solution Sw.The solution pump 19 that the flow of the weak solution Sw of discharge can be changed is equivalent to weak solution flow and adjusts dress It sets.Absorption refrigerating machine 1 is configured to that the weak solution Sw of absorber tank body 17 regenerator tank body can be carried to by solution pump 19 In 37.In regenerator tank body 37, the weak solution Sw of importing from entrance to outlet with moving, and refrigerant V is from weak solution Sw It is detached from, so that weak solution Sw concentration rises.
The part of regenerator tank body 37 flowed out for concentrated solution Sa and the concentrated solution spreading nozzle 12 of absorber 10 are by dense molten Liquid pipe 38 connects.Absorption refrigerating machine 1 is constituted are as follows: weak solution Sw is carried to regenerator tank body 37 by solution pump 19, is being regenerated The concentrated solution Sa that 37 inner refrigerant V of device tank body is detached from and generates is imported into concentrated solution spreading nozzle 12 via concentrated solution pipe 38.That is, Solution pump 19 can be such that absorbing liquid S recycles between absorber 10 and regenerator 30.Concentrated solution tune is provided in concentrated solution pipe 38 Valve 15 is saved, the flow for importeding into the concentrated solution Sa of concentrated solution spreading nozzle 12 is adjusted；Concentrated solution thermometer 51, detection regeneration The temperature for the concentrated solution Sa that device 30 exports；Strong solution concentration meter 53, the concentration for the concentrated solution Sa that detection regenerator 30 exports.It is dense Solution regulating valve 15 is equivalent to concentrated solution flow regulator.In weak solution pipe 18 and the insertion of concentrated solution pipe 38 configured with solution heat Exchanger 81, the solution heat exchanger 81 make weak solution pipe 18 flow weak solution Sw with flowed in concentrated solution pipe 38 it is dense molten Heat exchange is carried out between liquid Sa.
Control device 60 is the equipment for controlling the movement of absorption refrigerating machine 1.Control device 60 be configured to by wired or Wirelessly and respectively it is electrically connected with solution pump 19, refrigerated medium pump 29, cooling water pump 91, water supply pump 92, cooling tower 93, it can be to these The start and stop of component are controlled.In addition, control device 60 constitute are as follows: by it is wired or wirelessly respectively with weak solution liquidometer 16, evaporator refrigerant liquidometer 25 and condenser refrigerant liquidometer 45 are electrically connected, and can make the liquid level being detected For signal reception.In addition, control device 60 be configured to by it is wired or wirelessly respectively with concentrated solution thermometer 51 and cold water Thermometer 54 is electrically connected, and can be received the temperature being detected as signal.In addition, control device 60 is configured to and concentrated solution Densimeter 53 can be received by wired or radio connection using the concentration being detected as signal.In addition, control device 60 are configured to connect the pressure being detected as signal by wired or be wirelessly electrically connected with regenerator pressure meter 55 It receives.
In addition, control device 60 is configured to by wired or wireless adjust respectively with concentrated solution regulating valve 15 and heating source Valve 33 is electrically connected, and the aperture of these valves can be adjusted.In addition, in control device 60, about supply to heating part 31 Heating source fluid H flow and be stored with rated limit value and excessive upper limit value both upper limit values.Rated limit value be It supplies when absorption refrigerating machine 1 operates under rated condition to the upper limit value of the heating source fluid H of heating part 31, it is typically specified Flow when 100%.Rated condition be suitably determined according to the specification of absorption refrigerating machine 1, for make absorption refrigerating machine 1 be suitable for The condition of ground movement.100% specified operating is the state that can most effectively operate.Excessive upper limit value is to make to absorb to freeze Machine 1 is than specified to supply when the output operating bigger than rated output to the upper limit value of the heating source fluid H of heating part 31 The big value of upper limit value.In general, if operating absorption refrigerating machine 1 with the output bigger than rated output, with fortune when rated condition Phase inversion specific efficiency reduces, but is effective in the case where temporary needs biggish output due tos increase of thermic load etc..If Increase the calorific value of heating part 31 with the output operating bigger than rated output, then for example there is a possibility that absorption refrigerating machine 1 Operating appropriate is obstructed because of concentration of absorbing liquid S etc., therefore sets the flow supplied to the heating source fluid H of heating part 31 Upper limit value (excessive upper limit value).In this way, absorption refrigerating machine 1 is operated in the range of excessive upper limit value, thus, it is possible to The output operating bigger than rated output, though therefore it is difficult to maximum heating load being sufficiently carried out place in the operating of rated limit value Reason, but can be selected in the capacity that can be disposed in the operating of excessive upper limit value, thus with it is selected can in specified operating it is right The capacity that maximum heating load is handled is compared, and can be realized miniaturization (typically diminution outer dimension and/or setting area), Cost is imported to also contribute to cutting down.With the operating of the output bigger than rated output, inhibit the fortune appropriate of absorption refrigerating machine 1 Turn the case where being obstructed, therefore the duration of runs and/or the accumulation duration of runs of preferred limitation each time.Control device 60 is to supply Flow to the heating source fluid H of heating part 31 becomes the mode in the range of rated limit value or excessive upper limit value, control The aperture of heating source regulating valve 33.
In addition, in the present embodiment, control device 60 has safety control unit 65.Safety control unit 65 is in order to make to absorb Refrigeration machine 1 carries out operating appropriate, and monitors to specific physical quantity, has been more than the upper limit allowed in the physical quantity of monitoring When value, the instruction for stopping the operating of absorption refrigerating machine 1 is issued.As the physical quantity that safety control unit 65 monitors, in this implementation Using the temperature of absorbing liquid S, the concentration of absorbing liquid S, the internal pressure of regenerator 30, the reservoir 13 of absorber 10 in mode Liquid level, the liquid level of the reservoir 23 of evaporator 20, the liquid level of the reservoir 43 of condenser 40.In addition in the present embodiment, from From the perspective of function, safety control unit 65 is briefly distinguished to show in control device 60, but safety control unit 65 can be constituted to one integrated mass in control device 60, and safety control unit 65 is also configured to relative to 60 object of control device Reason ground split settings.Control device 60 including such safety control unit 65 is constituted are as follows: is able to carry out and is made in aftermentioned absorption The control of the absorption refrigerating machine 1 illustrated in the effect of cold 1.
With continued reference to Fig. 1, the effect of absorption refrigerating machine 1 is illustrated.Firstly, illustrating the normal fortune of absorption refrigerating machine 1 Effect when turning.When absorption refrigerating machine 1 runs well, by carrying out the instruction of self-control device 60, make solution pump 19, refrigerant Pump 29, cooling water pump 91, water supply pump 92, cooling tower 93 operate respectively.If the circulation of the side refrigerant V is observed, via regenerator Refrigerant vapour flow path 35 imported into the regenerator refrigerant vapour Vg of condenser 40 from regenerator 30, is flowed in condenser pipe 41 Cooling water D it is cooling and condense, become refrigerant liquid Vf and be stored in the reservoir 43 of condenser tank body 47.Freeze to regenerator The temperature for the cooling water D that agent steam Vg is cooled down rises, and flows out and supplied to cooling tower 93 from cooling water recurrent canal 99. Refrigerant liquid Vf in condenser tank body 47 is imported into evaporator tank body 27 via condensating refrigerant liquid pipe 48.
The refrigerant liquid Vf for importeding into evaporator tank body 27 from condenser tank body 47 is dissipated with from refrigerant liquid spreading nozzle 22 Cloth and unevaporated refrigerant liquid Vf mixing, and it is stored in the reservoir 23 of evaporator tank body 27.By refrigerated medium pump 29, evaporation Refrigerant liquid Vf in device tank body 27 flows in refrigerant liquid pipe 28 and reaches refrigerant liquid spreading nozzle 22.Reach refrigerant liquid The refrigerant liquid Vf of spreading nozzle 22 is spread towards evaporation tube 21, obtains the heat of the cold water C flowed in evaporation tube 21, and one Divide evaporation and become evaporator refrigerant steam Ve, and imported into absorber tank body 17.The refrigerant liquid Vf being distributed captures The temperature of the cold water C of heat reduces, and flows out from cold water backhaul pipe 96 and supply to the cold water C of air conditioner etc. and utilize place. From the distribution of refrigerant liquid spreading nozzle 22 and the unevaporated refrigerant liquid Vf and refrigerant liquid Vf from the importing of condenser tank body 47 Mixing, and it is stored in the reservoir 23 of evaporator tank body 27.
Next, if the circulation of the solution S side of observation absorption refrigerating machine 1, the storage being stored in absorber tank body 17 After the weak solution Sw in portion 13 is flowed by solution pump 19 and in weak solution pipe 18, and temperature rises in solution heat exchanger 81, Import regenerator tank body 37.Weak solution Sw after importeding into regenerator tank body 37 be heated portion 31 heating, make refrigerant V be detached from and As concentrated solution Sa.On the other hand, the refrigerant V being detached from from weak solution Sw is as regenerator refrigerant vapour Vg, via regeneration Device refrigerant vapour flow path 35 and be delivered in condenser tank body 47.The concentrated solution Sa generated in regenerator tank body 37 is dense molten Liquid pipe 38 flow, when in solution heat exchanger 81 with weak solution Sw carry out heat exchange and make temperature reduce after, reach concentrated solution Spreading nozzle 12.
The concentrated solution Sa for reaching concentrated solution spreading nozzle 12 is spread towards cooling tube 11, absorbs the steaming imported from evaporator 20 Device refrigerant vapour Ve is sent out, concentration reduces and becomes weak solution Sw.In absorber tank body 17, evaporator is absorbed in concentrated solution Sa It is generated when refrigerant vapour Ve and absorbs heat.The absorption heat of the generation is imported into from cooling water backhaul pipe 98 and is flowed in cooling tube 11 Dynamic cooling water D is removed.Cooling tube 11 flow cooling water D capture absorption heat and temperature rise, and flow out to cooling water company Siphunculus 58 and supply to condenser 40 condenser pipe 41.The weak solution Sw generated in absorber tank body 17 is stored in absorber tank Reservoir 13 in body 17.
When carrying out the operating of absorption refrigerating machine 1 as described above, 54 inspection in terms of by cold water temperature when control device 60 is flat The temperature measured becomes the mode of the temperature set, and opening for heating source regulating valve 33 is adjusted in the range of rated limit value Thus degree adjusts the heating amount of heating part 31.If increasing the aperture of heating source regulating valve 33 in the range of rated limit value, It supplies to the flow of the heating source fluid H of heating part 31 and increases, so that the heating amount of heating part 31 increases, generated by regenerator 30 Concentrated solution Sa concentration rise.If the concentrated solution Sa that the concentration rises is carried to absorber 10 and spreads, by concentrated solution The flow for the evaporator refrigerant steam Ve that Sa absorbs increases, thus the production quantity of the evaporator refrigerant steam Ve of evaporator 20 Increase, the heat captured from cold water C increases, and the temperature of result cold water C reduces.On the contrary, if reducing heating source regulating valve 33 Aperture, then the heating amount of heating part 31 is reduced, so that the concentration of concentrated solution Sa reduces, the evaporator system absorbed by concentrated solution Sa The flow of refrigerant vapor Ve is reduced, and the production quantity of evaporator refrigerant steam Ve is reduced along with this, and result is captured from cold water C Heat reduce, the temperature of cold water C rises.
Moreover, under rated condition in the operation process of absorption refrigerating machine 1, because the thermic load of the supply object of cold water C increases It is big etc., and exist and require the case where absorption refrigerating machine 1 is with the output operating bigger than rated output.Control device 60 is answered receiving When the instruction operated with the output bigger than rated output, the heating source so far carried out in the range of rated limit value is adjusted The adjusting of the aperture of valve 33 is switched to and carries out in the range of excessive upper limit value.Add if being adjusted in the range of excessive upper limit value The aperture of heat source regulating valve 33 can make supply to heating part then compared with the case where carrying out in the range of rated limit value The flow of 31 heating source fluid H increases, so as to increase the heat that refrigerant V captures from cold water C in evaporator 20, It can be operated with the output bigger than rated output.In addition, in the feelings for operating absorption refrigerating machine 1 with the output bigger than rated output Under condition, other than increasing the aperture of heating source regulating valve 33, more than one that can also make the case where being exemplified below one is gone forward side by side Row.
First, control device 60 increases the circular flow of concentrated solution Sa by increasing the aperture of concentrated solution regulating valve 15 Greatly.If increasing the circular flow of concentrated solution Sa, the concentration for being able to suppress concentrated solution Sa becomes overrich, and is able to suppress again Pressure in raw device tank body 37 rises.In addition, in the case where increasing the circular flow of concentrated solution Sa, inflow absorber 10 The flow of absorbing liquid S increases, thus in order to make absorber tank body 17 reservoir 13 level stability, preferably make from absorber 10 The flow of the weak solution Sw of outflow increases.
Second, control device 60 rises the rotation speed of solution pump 19, to make to remove from absorber 10 to regenerator 30 The flow of the weak solution Sw of fortune increases.If increasing the flow of weak solution Sw, the concentration for being able to suppress absorbing liquid S became It is dense, and the pressure being able to suppress in regenerator tank body 37 rises.In addition, if that carries from absorber 10 to regenerator 30 is dilute molten The flow of liquid Sw increases, then the liquid level rate of climb of the absorbing liquid S in regenerator tank body 37 also rises, therefore from regenerator tank body The flow of the concentrated solution Sa of 37 outflows increases, and the circular flow of result concentrated solution Sa increases.
Third, control device 60 make the target value of the temperature detected by cold water temperature meter 54 be higher than the temperature set.That is, with The mode that cold water C reduces relative to the inlet temperature of evaporator 20 and the difference of outlet temperature, changes setting for the outlet temperature of cold water C Definite value.Typically, generally 0.3~0.5 DEG C or so of the amount of change of set temperature.If making the temperature detected by cold water temperature meter 54 Target value be higher than set temperature, then the concentration for being able to suppress absorbing liquid S becomes overrich.
4th, control device 60 rises the rotation speed of cooling water pump 91, to make supply to absorber 10 and condensation The flow of the cooling water D of device 40 increases.If increasing the flow of cooling water D, can make remove absorber 10 absorption heat and The amount of the condensation heat of condenser 40 increases, so as to suitably carry out the absorption refrigeration cycle of absorbing liquid S Yu refrigerant V, energy Enough the concentration of absorbing liquid S is inhibited to become overrich.
5th, control device 60 rises the rotation speed of the fan of cooling tower 93, and makes supply to absorber 10 and cold The temperature of the cooling water D of condenser 40 reduces.It is reduced if making the temperature of cooling water D, the absorption heat for removing absorber 10 can be made Increase with the amount of the condensation heat of condenser 40, so as to suitably carry out the absorption refrigeration cycle of absorbing liquid S Yu refrigerant V, The concentration for being able to suppress absorbing liquid S becomes overrich.
In addition, increasing heating source regulating valve 33 to require absorption refrigerating machine 1 to operate with the output bigger than rated output Aperture and in the case where increasing the heating amount of heating part 31, the concentration of absorbing liquid S can be promoted, so even on taking In the case where first stated~the 5th measure, there is also be difficult to the case where making absorption refrigerating machine 1 continue operating appropriate.As difficulty So that an important factor for operating appropriate of absorption refrigerating machine 1 continues, for example, the anxiety for generating absorbing liquid S crystallization can be enumerated The excessive rising of temperature of the concentration and/or absorbing liquid S of the absorbing liquid S of degree, the pressure of absorption refrigerating machine 1 become highest The rising etc. of partial pressure.Alternatively, in the presence of be mixed into equipment because of incondensable gas, the pollution of evaporation tube 21 etc. is difficult to ability Caused by performance, it is difficult to the case where continuing the operating appropriate of absorption refrigerating machine 1.In the present embodiment, in order to can The no operating appropriate for making absorption refrigerating machine 1 continues to judge, and being provided with becomes highest regeneration to the concentration of absorbing liquid S Concentrated solution thermometer 51 that the temperature for the concentrated solution Sa that device 30 exports is detected, strong solution concentration meter that concentration is detected 53, the internal pressure for becoming highest regenerator 30 to the pressure of absorption refrigerating machine 1 is detected regenerator pressure meter 55, right Weak solution liquidometer 16 that the liquid level of weak solution Sw in absorber tank body 17 is detected, to the refrigeration in absorption refrigerating machine 1 The evaporator refrigerant liquidometer 25 and condenser refrigerant liquidometer 45 that the liquid level of agent liquid Vf is detected.Here, dense molten Liquid thermometer 51, strong solution concentration meter 53, regenerator pressure meter 55, weak solution liquidometer 16, evaporator refrigerant liquidometer 25, Condenser refrigerant liquidometer 45 is respectively equivalent to monitoring physical quantity detection unit.
In the present embodiment, whether safety control unit 65 surpasses the physical quantity detected by each monitoring physical quantity detection unit The upper limit value that having crossed allows is judged that more than one in the physical quantity detected by each monitoring physical quantity detection unit is more than When the upper limit value allowed, safety control unit 65 issues the instruction for stopping the operating of absorption refrigerating machine 1, and control device 60 makes to inhale It receives refrigeration machine 1 to stop, thus protecting absorption refrigerating machine 1.However, the supply of cold water C also stops if absorption refrigerating machine 1 stops, To completely can not the thermic load of supply object to cold water C handle, therefore preferably absorption refrigerating machine 1 is avoided to stop as far as possible Only.Therefore, in the present embodiment, control below is carried out.
Fig. 2 is to avoiding absorption refrigerating machine 1 to be illustrated based on the control of the stopping of the instruction of safety control unit 65 as far as possible Flow chart.Control device 60 is in the operation process of absorption refrigerating machine 1, in the temperature that will be detected by cold water temperature meter 54 The flow for the heating source fluid H that heating part 31 is imported when being set as predetermined temperature is calculated the (heating based on setting value Source stream body H flow rate calculation process: S1).In addition, control device 60 is in the physical quantity detected by each monitoring physical quantity detection unit The flow for the heating source fluid H that heating part 31 is imported when as upper limit value is respectively calculated that (each physical quantity becomes upper limit value Heating source fluid H flow rate calculation process: S2).In addition, Fig. 2 shows in the heating source fluid H flow rate calculation work based on setting value After sequence (S1), carrying out each physical quantity becomes the heating source fluid H flow rate calculation process (S2) of upper limit value, but can also make the sequence Process (S1) is carried out afterwards in process (S2) on the contrary, or process (S1) and process (S2) can also be made to carry out parallel.
If the flow and each physical quantity to the heating source fluid H based on setting value become the heating source fluid H's of upper limit value Flow is calculated, then control device 60 is to lead the smallest heating source fluid H in the flow of calculated heating source fluid H (heating source regulating valve 33 controls process: S3) is adjusted to the aperture of heating source regulating valve 33 in the mode for entering heating part 31.Into The such control of row, thus the case where the smallest heating source fluid H flow is the heating source fluid H flow based on setting value Under, safety control unit 65 can not issue the halt instruction of absorption refrigerating machine 1, and the temperature of cold water C is set as setting value.Separately It outside, is that either one or two of the physical quantity detected by each monitoring physical quantity detection unit becomes upper in the smallest heating source fluid H flow In the case where the heating source fluid H flow of limit value, the temperature of cold water C can be avoided safety control unit less than reaching setting value The halt instruction of 65 sending absorption refrigerating machines 1 simultaneously continues the operating appropriate of absorption refrigerating machine 1.
If the aperture of heating source regulating valve 33 is adjusted (S3), safety control unit 65 is examined to by each monitoring physical quantity Whether either one or two of physical quantity that survey portion detects has been more than that upper limit value is judged (S4).Work is controlled in heating source regulating valve 33 In sequence (S3), to heating source regulating valve in such a way that the physical quantity detected by each monitoring physical quantity detection unit is no more than upper limit value 33 aperture is adjusted, but in the case where being more than upper limit value because of certain situations, protection can be taken to absorb refrigeration The mode of the measure of machine 1 carries out the judgement (S4).If safety control unit 65 is judged as that any one physical quantity has been more than upper limit value, The instruction for stopping absorption refrigerating machine 1 is then issued to control device 60, control device 60 is based on the finger from safety control unit 65 Order makes absorption refrigerating machine 1 stop (S6).On the other hand, in the case where arbitrary physical quantity is no more than upper limit value, control dress It sets 60 pairs of halt instructions with the presence or absence of the absorption refrigerating machine 1 in usually operating and is judged (S5).Stopping usually in operating Refer in the state that absorption refrigerating machine 1 is able to carry out the operating of continuation, the feelings of side are utilized according to the cold water C of thermic load reduction etc. Condition and the stopping of absorption refrigerating machine 1 being able to carry out.In the case where there is the halt instruction in usually operating, control device 60 Absorption refrigerating machine 1 is set to stop (S6).On the other hand, without usually operating in halt instruction in the case where, again return to and be based on The heating source fluid H flow rate calculation process (S1) of setting value, hereinafter, above-mentioned process is repeated.
Fig. 3 indicates the timing diagram of an example of above-mentioned control.It is horizontal axis that Fig. 3, which takes the time, takes calculated heating source The flow of fluid H is the longitudinal axis.In Fig. 3, solid line Lr indicates the flow of the heating source fluid H based on setting value, chain-dotted line Ls table Showing in the flow for the heating source fluid H that the physical quantity detected by each monitoring physical quantity detection unit becomes upper limit value becomes minimum Flow.In the example shown in Fig. 3, until moment t1, solid line Lr are less than chain-dotted line Ls, therefore control device 60 will be will be based on The mode that the flow for the heating source fluid H that preset value calculation goes out imports heating part 31 controls the aperture of heating source regulating valve 33 System.During moment t1~moment t2, chain-dotted line Ls is less than solid line Lr, thus control device 60 with the physical quantity that will test out at Mode for the flow importing heating part 31 of the heating source fluid H of upper limit value controls the aperture of heating source regulating valve 33. Then, after moment t2, solid line Lr is again less than chain-dotted line Ls, therefore control device 60 based on preset value calculation will be gone out The mode that the flow of heating source fluid H imports heating part 31 controls the aperture of heating source regulating valve 33.In addition, in Fig. 3 Shown in example, in moment t3, control device 60 receives the halt instruction in usually operating, therefore makes heating source regulating valve 33 begin to shut off towards fully closed, to reduce the supply amount that heating source fluid H is supplied to heating part 31.In this way, avoiding filling safely The work set, and make the temperature of cold water C as close possible to setting value.
However, be more than rated limit value on excessive with the instruction of the output operating bigger than rated output receiving In the case where the adjusting for carrying out the aperture of heating source regulating valve 33 in the range of limit value, the efficiency of absorption refrigerating machine 1 is reduced, therefore It is preferred that avoiding as far as possible.Therefore in the present embodiment, should be passed through from reception with the instruction of the output operating bigger than rated output When having spent the defined time, or should be accumulative super with the time of the instruction of bigger than rated output output operating receiving When having spent the defined cumulative time, the adjusting that the aperture of heating source regulating valve 33 is carried out in the range of rated limit value is returned. The defined cumulative time can also be resetted when (such as 1 month, 1 year etc.) during it have passed through as defined in certain.Hereby it is possible to Absorption refrigerating machine 1 is avoided to carry out the operating of inefficiency for a long time.In addition, when carrying out heating source tune in the range of excessive upper limit value When saving the adjusting of the aperture of valve 33, when that should be disappeared with the instruction of the output operating bigger than rated output, return certainly in volume Determine the adjusting that the aperture of heating source regulating valve 33 is carried out in the range of upper limit value.
As described above, absorption refrigerating machine 1 according to the present embodiment, can be with the output bigger than rated output The equipment that capacity when operating, therefore can select specified operating is less than the maximum heating load that handle, so as to realize The miniaturization of absorption refrigerating machine 1.In addition, when exporting the instruction operated, be made dense molten with bigger than rated output receiving The circular flow of liquid Sa and weak solution Sw increase, therefore the concentration for being able to suppress absorbing liquid S becomes overrich, and is able to suppress again The rising of pressure in raw device tank body 37.In addition, receive should be with the instruction of bigger than rated output output operating when, with The mode that the inlet temperature of cold water C and the difference of outlet temperature relative to evaporator 20 become smaller is set to the outlet temperature of cold water C Definite value changes, so that the flow for making to supply the cooling water D to absorber 10 and condenser 40 increases, makes supply to absorber 10 and condenser 40 cooling water D temperature reduce, it helps inhibit absorbing liquid S concentration become overrich.In addition, with from The temperature for the cold water C that absorption refrigerating machine 1 flows out become the mode of predetermined temperature to the aperture of heating source regulating valve 33 into In the case that row is adjusted, and the physical quantity detected by each monitoring physical quantity detection unit is more than the upper limit value allowed, prior to The temperature of cold water C is adjusted, and becomes the upper limit value side below allowed with the physical quantity detected by each monitoring physical quantity detection unit Formula is controlled, therefore can make 1 continuous running of absorption refrigerating machine.
In the above description, as the physical quantity for being detected by monitoring physical quantity detection unit and being monitored by safety control unit 65 One of, detected using internal pressure of the regenerator pressure meter 55 to regenerator 30, but replace, can also to regeneration The relevant physical quantity of the internal pressure of device 30 is detected.As physical quantity relevant to the internal pressure of regenerator 30, such as The temperature of the regenerator refrigerant vapour Vg for the dew-point temperature for being equivalent to refrigerant V can be enumerated.In addition, in Absorption Refrigerator It, can also be to the inside of the absorber as the highest main structural components of internal pressure in the case where for second of sorption type heat pump Pressure or physical quantity relevant to the internal pressure of absorber are detected.
In the above description, monitoring physical quantity detection unit includes weak solution liquidometer 16, evaporator refrigerant liquidometer 25, condenser refrigerant liquidometer 45, concentrated solution thermometer 51, strong solution concentration meter 53, regenerator pressure meter 55, but as long as tool There are at least one of these, then also can be omitted not used test section.
In the above description, safety control unit 65 will make to inhale when the physical quantity of monitoring has been more than the upper limit value allowed The instruction for receiving the operating stopping of refrigeration machine 1 is delivered to control device 60, but output is replaced to stop the operating of absorption refrigerating machine 1 It instructs, it is the instruction of defined flow that can also export, which will flow into the flow restriction of the heating source fluid H of heating part 31,.It is defined Flow is the heating source fluid H for making output be reduced to the degree that the operating appropriate of absorption refrigerating machine 1 can be made reliably to carry out Flow.Heating part 31 will be flowed into when the physical quantity that safety control unit 65 monitors has been more than the upper limit value allowed, and in output Heating source fluid H flow restriction be defined flow instruction in the case where, in flow chart shown in Fig. 2, to by Either one or two of physical quantity that each monitoring physical quantity detection unit detects whether be more than in process (S4) that upper limit value is judged, If being judged as, any one physical quantity has been more than upper limit value, does not enter the process (S6) for stopping absorption refrigerating machine 1, control dress 60 are set based on the instruction received from safety control unit 65 so that the flow restriction of the heating source fluid H of heating part 31 will be flowed into as rule The mode of fixed flow controls the aperture of heating source regulating valve 33, later, returns to by each monitoring physical quantity detection unit Whether either one or two of physical quantity detected has been more than process (S4) that upper limit value is judged.
In the above description, heating source is heating source fluid H, but heating source may be the solids such as Solid fuel.
In the above description, base position is set as to the outlet of absorption refrigerating machine 1, by (the temperature tune of cold water temperature meter 54 Section subject fluid temperature detecting part) it is set to cooling water outlet pipe 21b, but base position can also be set as to absorption refrigerating machine 1 Cold water temperature meter 54 is set to cold water inlet pipe 21a by entrance.In addition, temperature adjusting object fluid temperature (F.T.) test section can also be with It is the cold water temperature meter 54 instead of directly being detected to the temperature of cold water C, and the temperature of cold water C is detected indirectly Component.
In the above description, cooling water D is instantiated after being imported into absorber 11, imports the structure of condenser 40, but It can be the structure of the importing absorber 11 after being imported into condenser 40, or import absorber 10 and condenser side by side 40 structure.
In the above description, cooling water pump 91 and water supply pump 92 are not the structural elements of absorption refrigerating machine 1, but can also be with Cooling water pump 91 and/or water supply pump 92 are had for the structural element of absorption refrigerating machine 1.However, the stream based on cooling water pump 91 The cold water C of dynamic cooling water D and the flowing based on water supply pump 92 is usually because the condition in the place of setting absorption refrigerating machine 1 etc. is different And make until supplying the differences such as transport distance, the flow of object, therefore cooling water pump 91 and water supply pump 92 are not set as absorbing system The structural element of cold 1 is preferably able to the ability for being suitable for setting place etc. of selected absorption refrigerating machine 1.
In the above description, for easy understanding, absorption refrigerating machine 1 is the structure of single-action, but can also apply to The absorption refrigerating machine of multi-purpose with multiple regenerators or with the different multiple evaporator/absorbers of operating pressure Absorption refrigerating machine.
In the above description, Absorption Refrigerator is illustrated for absorption refrigerating machine, but may be absorb water chiller/heater, Sorption type heat pump etc., carry out absorbing liquid S and refrigerant V absorption cycle other absorption heat source machines.

Claims (14)

1. a kind of Absorption Refrigerator, the absorption cycle of the absorbing liquid and refrigerant that are constituted by means of supply heating source, into The cooling or heating of trip temperature controlled plant fluid, which is characterized in that have:
The amount of heat input regulating device, the unit time of the heating source of the opposite Absorption Refrigerator supply carries out It adjusts；With
Control device controls the heat input regulating device,
The control device is constituted are as follows: the amount of the unit time of the heating source as supply to the Absorption Refrigerator Upper limit value, the rated limit value being stored under rated condition and the excessive upper limit value greater than the rated limit value, and usually The heat input regulating device is controlled in the range of the rated limit value, it should be than the rated condition receiving Under the big output operating of rated output instruction when, the heat input is controlled in the range of the excessive upper limit value and is adjusted Device.
2. Absorption Refrigerator according to claim 1, which is characterized in that have:
Regenerator heats the absorbing liquid after absorbing the refrigerant using the heating source, makes the refrigeration Agent is detached from and generates the concentrated solution of concentration rising from the absorbing liquid；
Absorber generates the weak solution after concentration reduction by the steam that the absorbing liquid absorbs the refrigerant；And
Weak solution flow regulator directly or indirectly adjusts the flow of the weak solution flowed out from the absorber,
The Absorption Refrigerator is configured to recycle the absorbing liquid by the regenerator and the absorber,
The control device is being received and when exporting the instruction operated, controlled described dilute molten with bigger than the rated output Flow-adjusting device, so that when operating described in flow-rate ratio from the weak solution that the absorber flows out under rated condition Increase.
3. Absorption Refrigerator according to claim 1, which is characterized in that have:
Regenerator heats the absorbing liquid after absorbing the refrigerant using the heating source, makes the refrigeration Agent is detached from from the absorbing liquid and generates the concentrated solution after concentration rises；
Absorber generates the weak solution after concentration reduction by the steam that the absorbing liquid absorbs the refrigerant；And
Concentrated solution flow regulator directly or indirectly adjusts the flow of the concentrated solution flowed out from the regenerator,
The Absorption Refrigerator is configured to recycle the absorbing liquid by the regenerator and the absorber,
The control device is being received and when exporting the instruction operated, controlled described dense molten with bigger than the rated output Flow-adjusting device, so that when operating described in flow-rate ratio from the concentrated solution that the regenerator flows out under rated condition Increase.
4. Absorption Refrigerator described according to claim 1~any one of 3, which is characterized in that
The control device receive should be with the instruction of the output operating bigger than the rated output when, will be from the absorption Formula refrigeration machine outflow the temperature adjusting object fluid temperature target value to its with imported into the Absorption Refrigerator The temperature adjusting object fluid temperature difference reduce direction change.
5. Absorption Refrigerator described according to claim 1~any one of 3, which is characterized in that
Have condenser, the steam for the refrigerant being detached from from regenerator is imported, and make the refrigeration using cooling water The steam cooling of agent condenses and generates refrigerant liquid, and the regenerator is using the heating source to the institute after absorbing the refrigerant It states absorbing liquid to be heated, the refrigerant is made to be detached from and generate the concentrated solution of concentration rising from the absorbing liquid,
The control device is being received and when exporting the instruction operated, controlled to described cold with bigger than the rated output But the cooling water flow regulating device that the flow of water is adjusted, so as to imported into the flow of the cooling water of the condenser Than increasing when operating under the rated condition.
6. Absorption Refrigerator according to claim 5, which is characterized in that
The control device is being received and when exporting the instruction operated, controlled to described cold with bigger than the rated output But the cooling water temperature adjusting device that the temperature of water is adjusted, so as to imported into the temperature of the cooling water of the condenser Than being reduced when operating under the rated condition.
7. Absorption Refrigerator described according to claim 1~any one of 3, which is characterized in that
Have condenser, the steam for the refrigerant being detached from from regenerator is imported, and make the refrigeration using cooling water The steam cooling of agent condenses and generates refrigerant liquid, and the regenerator is using the heating source to the institute after absorbing the refrigerant It states absorbing liquid to be heated, the refrigerant is made to be detached from and generate the concentrated solution of concentration rising from the absorbing liquid,
The control device is being received and when exporting the instruction operated, controlled to described cold with bigger than the rated output But the cooling water temperature adjusting device that the temperature of water is adjusted, so as to imported into the temperature of the cooling water of the condenser Than being reduced when operating under the rated condition.
8. Absorption Refrigerator described according to claim 1~any one of 3, which is characterized in that
The control device is constituted are as follows: when that should be disappeared with the instruction of the output operating bigger than the rated output, from connecing Or it should receiving receipts should be have passed through the defined time after the instruction of the output operating bigger than the rated output when When being more than the defined cumulative time with the time cumulation of the instruction of the output operating bigger than the rated output, described specified The heat input regulating device is controlled in the range of upper limit value.
9. Absorption Refrigerator described according to claim 1~any one of 3, which is characterized in that have:
Temperature adjusting object fluid temperature (F.T.) test section detects the temperature of the temperature adjusting object fluid at base position；
Monitor physical quantity detection unit, in order to carry out the operating appropriate of the Absorption Refrigerator, the monitoring physical quantity detection unit The more than one physical quantity of monitoring is detected；And
Security control unit, when the value detected by the monitoring physical quantity detection unit has been more than the upper limit value allowed, the peace The heating that full control unit makes the operating of the Absorption Refrigerator stop or will supply to the Absorption Refrigerator The amount of the unit time in source is limited to defined amount,
The control device calculates: the temperature detected by the temperature adjusting object fluid temperature (F.T.) test section is being set as preparatory The amount of the unit time for the heating source that should be imported when the temperature of setting and by the monitoring physical quantity detection unit detect When value out becomes the unit for the heating source that should be imported when the upper limit value set in the security control unit Between amount, and the heat input regulating device is controlled, so as to will be in the amount of the unit time of the calculated heating source Minimum imports the Absorption Refrigerator.
10. a kind of Absorption Refrigerator, the absorption cycle of the absorbing liquid and refrigerant that are constituted by means of supply heating source, into The cooling or heating of trip temperature controlled plant fluid, which is characterized in that have:
Heat input regulating device adjusts the amount of the unit time of the heating source supplied to the Absorption Refrigerator；
Temperature adjusting object fluid temperature (F.T.) test section detects the temperature of the temperature adjusting object fluid at base position；
Monitor physical quantity detection unit, in order to carry out the operating appropriate of the Absorption Refrigerator, the monitoring physical quantity detection unit The more than one physical quantity of monitoring is detected；
Security control unit makes when the value detected by the monitoring physical quantity detection unit has been more than the upper limit value allowed The operating of the Absorption Refrigerator stopped or by the unit time of the heating source supplied to the Absorption Refrigerator Amount be limited to defined amount；And
Control device calculates: the temperature detected by the temperature adjusting object fluid temperature (F.T.) test section is being set as preparatory The amount of the unit time for the heating source that should be imported when the temperature of setting and by the monitoring physical quantity detection unit detect When value out becomes the unit for the heating source that should be imported when the upper limit value set in the security control unit Between amount, and the heat input regulating device is controlled, so as to will be in the amount of the unit time of the calculated heating source Minimum imports the Absorption Refrigerator.
11. Absorption Refrigerator according to claim 10, which is characterized in that
By it is described monitoring physical quantity detection unit detection physical quantity be configured to include the absorbing liquid temperature and the absorbing liquid Concentration at least one party.
12. Absorption Refrigerator described in 0 or 11 according to claim 1, which is characterized in that have:
Regenerator heats the absorbing liquid after absorbing the refrigerant using the heating source, makes the refrigeration Agent is detached from and generates the concentrated solution of concentration rising from the absorbing liquid；And
Absorber generates the weak solution of concentration reduction by the steam that the absorbing liquid absorbs the refrigerant,
By it is described monitoring physical quantity detection unit detection physical quantity be configured to include: the regenerator internal pressure or with institute State the relevant physical quantity of internal pressure of regenerator and the internal pressure of the absorber or the inside with the absorber At least one party of the relevant physical quantity of pressure.
13. Absorption Refrigerator described in 0 or 11 according to claim 1, which is characterized in that
Have refrigerant liquid reservoir, store the liquid that is, refrigerant liquid of the refrigerant,
It is configured to include the institute for being stored in the refrigerant liquid reservoir by the physical quantity of the monitoring physical quantity detection unit detection State the liquid level of refrigerant liquid.
14. Absorption Refrigerator described in 0 or 11 according to claim 1, which is characterized in that
Have absorbing liquid reservoir, store the absorbing liquid,
It is configured to include being stored in described in the absorbing liquid reservoir as the physical quantity that the monitoring physical quantity detection unit detects The liquid level of absorbing liquid.
CN201810698100.4A 2017-07-14 2018-06-29 Absorption refrigerator Active CN109253557B (en)

Applications Claiming Priority (4)

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JP2017-138060 2017-07-14
JP2017138060A JP2019020027A (en) 2017-07-14 2017-07-14 Absorption type refrigerator
JP2017-138059 2017-07-14
JP2017138059A JP6922147B2 (en) 2017-07-14 2017-07-14 Absorption chiller

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CN109253557B CN109253557B (en) 2021-09-10

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4269034A (en) * 1979-09-10 1981-05-26 Rzechula Joseph A Absorption unit with variant control system
JPS62116871A (en) * 1985-11-15 1987-05-28 三洋電機株式会社 Annunciator for abnormality of operation of absorption refrigerator
JPH051860A (en) * 1991-06-24 1993-01-08 Yazaki Corp Absorption type water cooling and heating equipment
WO1995018343A1 (en) * 1993-12-27 1995-07-06 Daikin Industries, Ltd. Absorption type refrigerator
JP2003201989A (en) * 2003-01-20 2003-07-18 Hitachi Industrial Equipment Systems Co Ltd Feed pump equipment
JP2008232460A (en) * 2007-03-16 2008-10-02 Tokyo Gas Co Ltd Absorption chiller/heater and its control method
CN101545697A (en) * 2008-03-28 2009-09-30 三洋电机株式会社 Absorption type heat pump
CN104457011A (en) * 2013-09-20 2015-03-25 荏原冷热系统株式会社 Absorption-type refrigeration machine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4269034A (en) * 1979-09-10 1981-05-26 Rzechula Joseph A Absorption unit with variant control system
JPS62116871A (en) * 1985-11-15 1987-05-28 三洋電機株式会社 Annunciator for abnormality of operation of absorption refrigerator
JPH051860A (en) * 1991-06-24 1993-01-08 Yazaki Corp Absorption type water cooling and heating equipment
WO1995018343A1 (en) * 1993-12-27 1995-07-06 Daikin Industries, Ltd. Absorption type refrigerator
JP2003201989A (en) * 2003-01-20 2003-07-18 Hitachi Industrial Equipment Systems Co Ltd Feed pump equipment
JP2008232460A (en) * 2007-03-16 2008-10-02 Tokyo Gas Co Ltd Absorption chiller/heater and its control method
CN101545697A (en) * 2008-03-28 2009-09-30 三洋电机株式会社 Absorption type heat pump
CN104457011A (en) * 2013-09-20 2015-03-25 荏原冷热系统株式会社 Absorption-type refrigeration machine

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