CN106016839B

CN106016839B - Absorption heat pump and its generator and round-robin method

Info

Publication number: CN106016839B
Application number: CN201610495826.9A
Authority: CN
Inventors: 苏庆泉
Original assignee: University of Science and Technology Beijing USTB; Beijing Lianliyuan Technology Co Ltd
Current assignee: University of Science and Technology Beijing USTB; Beijing Lianliyuan Technology Co Ltd
Priority date: 2016-06-28
Filing date: 2016-06-28
Publication date: 2019-04-19
Anticipated expiration: 2036-06-28
Also published as: CN106016839A

Abstract

The invention discloses a kind of absorption heat pump and generator and round-robin methods, the generator of the absorption type heat pump system includes absorbent solution flash chamber, heat exchanger and the second absorbent solution spray equipment occurs, the outside that heat exchanger is set to absorbent solution flash chamber occurs, top in absorbent solution flash chamber is equipped with the second absorbent solution spray equipment, second absorbent solution spray equipment is connect with the second absorbent solution spray piping being set to outside absorbent solution flash chamber, absorbent solution in absorbent solution flash chamber is delivered to the second absorbent solution spray equipment and sprayed by the second absorbent solution spray piping, second absorbent solution spray piping is equipped with the second absorbent solution spray pump, second absorbent solution spray piping is connect with the cold flow side that heat exchanger occurs.The present invention can be promoted with more low-grade generation heat source to obtain the bigger temperature grade of industrial exhaust heat.

Description

Absorption heat pump and its generator and round-robin method

Technical field

The present invention relates to the cycle operation field of Thermal Power Engineering, in particular to a kind of absorption heat pump and its generator And round-robin method.

Background technique

Absorption heat pump, including absorption system, first-class absorption type heat pump system, second-kind absorption-type heat pump system The absorption heat pump of system and other forms is a kind of using heat as driving force, and realization is by heat from low-temperature heat source to high temperature The circulatory system of heat source pumping is the efficient apparatus for recycling low grade heat energy, with energy saving, protection environment dual Effect.As shown in Figure 1, absorption type heat pump system generally include evaporator 100, absorber 200, generator 300, condenser 400, The components such as heat exchanger, pipeline and canned motor pump.Wherein, pass through the first refrigerant vapor channel between evaporator 100 and absorber 200 700 connections, are connected between generator 300 and condenser 400 by the second refrigerant vapor channel 800, the evaporation cavity of evaporator 100 It is equipped with evaporating heat exchanger 102 in room 101, is equipped with absorption heat-exchange device 202, generator 300 in the absorption chamber 201 of absorber 200 Generation chamber 301 in be equipped with heat exchanger 302 occur, be equipped with condensing heat exchanger 402 in the condensing chamber 401 of condenser 400.It steams Send out device condensation working medium, absorber absorbent solution, generator absorbent solution and condenser refrigerant vapor by evaporating heat exchanger 102, Absorption heat-exchange device 202, occur heat exchanger 302 and condensing heat exchanger 402 respectively with external evaporation heat source, absorb heat source, occur Heat source and condensation heat source exchange heat.The temperature difference of the heat exchanger entrance and outlet that are generated according to heat source in heat release or heat absorption, Used heat source can be divided into temperature-variable heat source and constant temperature heat source, in general, the heat exchanger entrance of heat source and the temperature difference of outlet are less than 3 DEG C Heat source can be considered constant temperature heat source, and the heat source of heat exchanger entrance and the temperature difference of outlet greater than 3 DEG C is then temperature-variable heat source.It is existing In absorption heat pump, the evaporating heat exchanger 302 of generator 300 is set in the evaporation chamber 301 of generator 300, to absorbent solution Carry out heating evaporation.The generation heat exchanger 302 of existing absorption heat pump is due to using pipe shell type heat exchange, it is difficult to it is strong to improve heat exchange Degree and reduction heat transfer temperature difference.

It can be defeated from absorber 200 by putting into industrial exhaust heat in evaporator 100 for second-kind absorption-type heat pump system The difference of high temperature heat out, the temperature grade of the temperature grade and input industrial exhaust heat of exported high temperature heat is known as heat pump temperature It rises.And same industrial exhaust heat or temperature grade ratio are usually utilized in the generation heat source as driving force that generator 300 is put into The lower low-temperature heat source of industrial exhaust heat temperature grade.It is just required in order to promote the heat pump temperature rise of second-kind absorption-type heat pump Improve the concentration of absorber absorbent solution.But for the absorption heat pump of existing all kinds, generator is inhaled in principle The concentration for receiving solution it is always higher than the concentration of absorber absorbent solution (part being higher by is known as deflation range, generally 3% to 5%), so, further promoting heat pump temperature rise just must be to put into the generation heat source of higher temperature grade in generator 300 as generation Valence.Importantly, when the absorbent solution concentration of generator 300 is close to or up to the saturated concentration of absorbent, absorbent knot Crystalline substance can be precipitated and grow up on the surface that heat exchanger 302 occurs, and the heat and mass of generating process is caused to be obstructed.Moreover, it gives birth to At bulky grain absorbent crystallization can also make absorbent solution circulating pump, absorbent solution spray equipment and absorbent solution circulating line The problem of etc. blocking is faced.

In addition, being heat source to occur, to mention low-temperature heat source for second-kind absorption-type heat pump system and with high temperature heat source Rising to middle temperature-heat-source is purpose first-class absorption type heat pump or absorption type refrigeration circulating system, when the generation heat source used is to become When temperature-heat-source, it is difficult to realize occur since heat exchanger 302 occurs for the shell-and-tube being arranged in the generation chamber 301 of generator 300 Counterflow heat exchange between heat source and absorbent solution and be difficult to improve heat transfer intensity and reduce heat transfer temperature difference, so as to cause generator Volume increases and cost increase.

In order to solve the problems, such as that above-mentioned existing absorption heat pump generator exists, the present invention moves to generation for heat exchanger occurs Through the generation heat exchanger and heat source is occurred for the absorbent solution of generator by the second absorbent solution spray pump by the outside of chamber Flash chamber after heat exchange in generator carries out spray flash distillation, significantly to strengthen the heat and mass mistake of absorbent solution working medium evaporation Journey.Under conditions of thermic load is certain, the more big required absorbent solution spray flow of alternating temperature amplitude of heat source occurs with regard to smaller, institute Power needed for stating the second absorbent solution spray pump is also just smaller.Therefore, present invention is particularly suitable for big using alternating temperature amplitude The absorption heat pump of heat source occurs.

Summary of the invention

In view of this, the embodiment of the present invention provides a kind of generator of absorption type heat pump system, main purpose is to keep away Exempt to generate absorbent crystallization on the heat-transfer surface that heat exchanger occurs due to the excessive concentration of absorbent solution, and realizes in absorber Absorbent solution concentration works under conditions of being higher than generator absorbent solution concentration, meanwhile, it improves generator absorbent solution working medium and steams The heat and mass transfer process of hair, to reduce the volume and cost of generator.

In order to achieve the above objectives, present invention generally provides following technical solutions:

On the one hand, the embodiment of the invention provides a kind of generator of absorption heat pump, including absorbent solution flash chamber, Second absorbent solution spray equipment, the second absorbent solution spray piping, the second absorbent solution spray pump and generation heat exchanger, hair Raw heat exchanger is set to the outside of absorbent solution flash chamber, and the top in absorbent solution flash chamber is sprayed equipped with the second absorbent solution Shower device, the second absorbent solution spray equipment connect with the second absorbent solution spray piping being set to outside absorbent solution flash chamber It connects, the absorbent solution in absorbent solution flash chamber is delivered to the second absorbent solution spray dress by the second absorbent solution spray piping It sets and is sprayed, the second absorbent solution spray piping is equipped with the second absorbent solution spray pump, the second absorbent solution spray piping It is connect with the cold flow side that heat exchanger occurs, the generation heating agent pipeline that heat source occurs is connect with the hot-fluid side that heat exchanger occurs.

Preferably, the generation heat exchanger is contra-flow heat exchanger.

Preferably, the generator further includes equipment for separating liquid from solid, in the absorbent solution flash chamber of the generator Absorbent solution in absorbent crystallization when, the equipment for separating liquid from solid by the absorbent solution be separated into containing absorbent crystallize With without absorbent crystallization two parts, wherein without absorbent crystallization absorbent solution it is defeated through the second absorbent solution spray piping It send to the second absorbent solution spray equipment, the absorbent solution containing absorbent crystallization is delivered to absorption by the first solution circulating line In device.

Preferably, the equipment for separating liquid from solid includes:

Liquid barrier is connect with the inner wall of the container body of the formation absorbent solution flash chamber of generator, liquid barrier and hair Interlayer is formed between the absorbent solution flash chamber inner wall of raw device, the absorbent solution in absorbent solution flash chamber is by liquid barrier The interlayer entrance of lower end enter in interlayer；

Overflow launder is formed in the outside wall surface of the container body of generator, for accommodating the absorbent solution by overflowing in interlayer；

Overflow port is opened on the side wall of the container body of generator, and overflow port is connected to interlayer and overflow launder；

Second absorbent solution spray piping is connected to overflow launder, the first solution circulating line and absorbent solution flash chamber Bottom connection；Wherein

When the crystallization of the absorbent of absorbent solution, absorbent crystallization is fallen along the container body inner wall of liquid barrier and generator To the bottom of generator, the absorbent for falling on bottom, which is crystallized, is delivered to absorption by the first solution circulating line with absorbent solution Device, absorbent solution are entered in interlayer by liquid barrier lower end, and the absorbent solution of interlayer internal upper part point without containing absorbent crystallization is from overflowing Head piece enters overflow launder, and is delivered to the second absorbent solution spray equipment by the second absorbent solution spray piping.

Preferably, the cross section of the lower part of the absorbent solution flash chamber of the generator is gradually reduced, it is in infundibulate, The liquid barrier is obliquely installed.

Preferably, the container body of the formation absorbent solution flash chamber of the generator is cylindrical shape.

On the one hand, the embodiment of the invention provides a kind of absorption heat pump, including evaporator, absorber, generator and cold Condenser, the evaporator and absorber are connected to by the first refrigerant vapor channel, and the condenser and generator pass through the second work The connection of matter steam channel, is connected between the generator and absorber by the first solution circulating line and the second solution circulating line Logical, absorbent solution is delivered to absorber by generator by the first solution circulating line, and the second solution circulating line will Absorbent solution is delivered to generator by absorber, and the first solution circulating line and the second solution circulating line are equipped with solution The absorbent solution conveyed in heat exchanger, the first solution circulating line and the second solution circulating line carries out heat by solution heat exchanger Amount exchange, the evaporator are connected with condenser by working medium pipeline, and the working medium pipeline is defeated by the working medium in the condenser It send to evaporator, the generator is above-mentioned generator.

Preferably, the absorption heat pump is second-kind absorption-type heat pump, the second solution circulating line is equipped with Throttle valve, the throttle valve are set between absorber and the solution heat exchanger.Thus can avoid due to absorbent solution cooling and Cause throttle valve Crystallization Plugging.

Preferably, the condenser includes condensing chamber, condensing heat exchanger, condensation working medium spray equipment, condensation working medium Spray piping and condensation working medium spray pump, the condensation working medium spray equipment are set in condensing chamber, the condensation working medium spray Pipeline is set to outside condensing chamber, and the condensing heat exchanger and condensation working medium spray pump are set to the condensation being located at outside condensing chamber On working medium spray piping, the condensation working medium spray pump is by the indoor condensation working medium of condensation chamber by condensation working medium spray piping through cold It is delivered to condensation working medium spray equipment after solidifying heat exchanger, condenses the hot-fluid side phase of working medium spray piping and the condensing heat exchanger The cold flow side of connection, condensing heat exchanger is connected with condensation heating agent pipeline.

Preferably, the condensing heat exchanger is contra-flow heat exchanger.

Preferably, the generator and the condenser share same container body, the top of the container chamber inside body For the condensing chamber of condenser, the absorbent solution flash chamber of generator is formed at the lower part of the container chamber inside body, described cold The lower part of solidifying chamber is equipped with condensation working medium receiver, between the outer wall of the condensation working medium receiver and the inner wall of the container body The second refrigerant vapor channel is formed, the condensation working medium receiver is connect with working medium pipeline, the condensing heat exchanger of the condenser It is connected with condensation heating agent pipeline, condensation heating agent carries out heat exchange by condensing heat exchanger, absorbs working medium condensation heat.

Preferably, the container body that the generator and the condenser share is cylindrical vessel body.

Preferably, the condensing chamber includes first segment and second segment, wherein the internal diameter of first segment is less than second segment Internal diameter, condensation working medium receiver are set to second segment, and condensation working medium spray equipment is set to first segment, condenses the diameter of working medium receiver More than or equal to the internal diameter of the first segment of evaporation chamber.

Preferably, the lower end of the first segment of the condensing chamber is equipped with condensation working medium flow-guiding structure, working medium water conservancy diversion is condensed Structure imports the condensation working medium on first segment inner wall in condensation working medium receiver.

Preferably, the condensation working medium flow-guiding structure is condensation working medium deflector, working medium deflector is condensed by first segment Lower end extend downwardly, condensation working medium deflector protrude into the space below first segment.

Preferably, the evaporator include evaporation chamber, evaporating heat exchanger, working medium spray piping, working medium spray pump and Working medium spray equipment, the evaporating heat exchanger are set to evaporation exterior thereto, and the evaporating heat exchanger and working medium spray pump are set to institute It states on working medium spray piping, the working medium spray pump on working medium spray piping is by the indoor working medium of evaporation cavity by working medium spray tube Road is sent after evaporating heat exchanger exchanges heat to working medium spray equipment, and the working medium spray equipment sprays working medium in evaporation cavity room, The evaporation chamber is flash distillation chamber, and the working medium is flashed in the evaporation cavity room as steam.

Preferably, the evaporating heat exchanger is contra-flow heat exchanger.

Preferably, the container body for forming evaporation chamber is cylindrical shape.

Preferably, the absorber includes absorption chamber, absorption heat-exchange device and the first absorbent solution spray equipment, it is described Absorption heat-exchange device is set to outside absorption chamber, and the absorption heat-exchange device is contra-flow heat exchanger, and the is equipped with outside the absorption chamber One absorbent solution spray piping, the absorption heat-exchange device are set on the first absorbent solution spray piping, first absorbent solution Spray piping connects absorption chamber and the first absorbent solution spray equipment, and the first absorbent solution spray piping is equipped with first Absorbent solution spray pump, the first absorbent solution spray pump is by the indoor absorbent solution of absorbing cavity by the first absorbent solution spray piping It send after the heat exchange of absorption heat-exchange device to the first absorbent solution spray equipment, the first absorbent solution spray equipment is by absorbent solution It is sprayed in absorption chamber, the absorbent solution absorbs the indoor refrigerant vapor of evaporation cavity.

Preferably, the evaporator and the absorber share same container body, the top of the container chamber inside body The evaporation chamber of evaporator is formed, the absorption chamber of absorber is formed at lower part, and the working medium spray equipment is set to the evaporator Evaporation chamber top, the lower part of the evaporation chamber is equipped with working medium receiver, the working medium receiver and working medium spray tube Road connection, forms the first refrigerant vapor channel between the outer wall of the working medium receiver and the inner wall for evaporating chamber.More preferably, institute Container body is stated as cylindrical shape.

Preferably, the evaporation chamber includes first segment and second segment, wherein the internal diameter of first segment is less than second segment Internal diameter, the working medium receiver are set to second segment, and the working medium spray equipment is set to first segment, the diameter of the working medium receiver More than or equal to the internal diameter of the first segment of evaporation chamber.

Preferably, the lower end of the first segment is equipped with working medium flow-guiding structure, the working medium flow-guiding structure is by described first Working medium on section inner wall imports in working medium receiver.

Preferably, the working medium flow-guiding structure is working medium deflector, the working medium deflector is by under the first segment End extends downwardly, and the working medium deflector protrudes into the space below first segment.

Preferably, the working medium pipeline is connect with working medium spray equipment.

Preferably, the first solution circulating line connects the first absorbent solution spray equipment.

On the other hand, the embodiment of the invention provides a kind of absorption heat pump cycle methods, including evaporator link, absorption Device link, generator link and condenser link, wherein

Evaporator link, working medium absorb heat from the evaporation heating agent for flowing through evaporating heat exchanger and are evaporated to refrigerant vapor, institute Refrigerant vapor is stated to be transported in absorber；

Absorber link, absorbent solution absorbs the refrigerant vapor that evaporator generates and releases the absorption heat of high temperature, described It absorbs heat to be output to the outside by flowing through the absorption heating agent of absorption heat-exchange device, the absorbent solution in absorber is transported to generator In；

Generator link, the second absorbent solution spray equipment positioned at the absorbent solution flash chamber top of generator is to liter Absorbent solution after temperature is sprayed, and carries out the fine drop of absorbent solution in the absorbent solution flash chamber of generator very Empty adiabatic flash；The refrigerant vapor that flash distillation generates is delivered to condenser；In flash process absorbent solution obtain be concentrated by evaporation and It is cooling；Absorbent solution after flash distillation falls on the bottom of absorbent solution flash chamber, and a part of absorbent solution is through the second absorbent solution Spray pump enters the generation heat exchanger being set to outside generator, and heat occurs by the way that heat exchanger occurs and heating agent heat exchange occurs to absorb The heat in source, the absorbent solution after heating are transported to the second absorbent solution spray equipment；A part of absorbent solution is recycled through solution The first absorbent solution spray equipment being delivered in absorber is pumped to be sprayed；

Condenser link condense to the refrigerant vapor that generator generates and absorption condensation is warm, and the condensation heat is by flowing Condensation heating agent through condensing heat exchanger is taken away；The liquid working substance for condensing formation within the condenser is transported to evaporation via working medium pipeline Device.

Preferably, the absorber link, the indoor absorbent solution of the absorbing cavity of absorber is via the first absorbent solution Spray piping output, the absorbent solution of the first absorbent solution spray piping conveying, which is delivered to be located at after the heat exchange of absorption heat-exchange device, inhales The indoor first absorbent solution spray equipment of absorbing cavity for receiving device is sprayed, and the absorbent solution sprayed out is in absorption chamber interior suction It receives the refrigerant vapor that evaporator generates and releases the absorption heat of high temperature, the cold flow side for absorbing heat and passing through absorption heat-exchange device Absorption heating agent be output to the outside.

It is sprayed preferably, being delivered to the first absorbent solution spray equipment by the absorbent solution that generator conveys.

Preferably, the evaporator link, the indoor working medium of the evaporation cavity of evaporator is exported via working medium spray piping, The working medium of working medium spray piping conveying is delivered to the indoor work of evaporation cavity positioned at evaporator after evaporating heat exchanger heat exchange Matter spray equipment is sprayed, and a part of the working medium sprayed out is flashed in evaporation cavity room as refrigerant vapor, the working medium steaming Gas is transported in absorber.

Preferably, the condenser link, the condensation working medium spray pump is by the indoor condensation working medium of condensation chamber by cold Solidifying working medium spray piping is delivered to condensation working medium spray equipment after external condensing heat exchanger, and condensation working medium is through condensation working medium spray The refrigerant vapor that generator generates condense after shower device spray and absorption condensation is warm, absorbs the condensation working medium of condensation heat After external condensing heat exchanger and condensation heating agent heat exchange, the condensation heat is by flowing through the condensation heating agent band of condensing heat exchanger It walks.

Preferably, the absorbent solution from the heat that heating agent occurs and absorbs occurred in heat exchanger, i.e. generation heat source is Industrial exhaust heat, underground heat or solar heat etc..

Preferably, the heat that the working medium is absorbed from the evaporation heating agent in evaporating heat exchanger, i.e. evaporation heat source are industry Waste heat, underground heat, solar heat perhaps the heat of air conditioner coolant or air-source, water source, the heat in source etc..

Preferably, the working medium is water；The absorbent is LiBr, LiNO₃, LiCl and CaCl₂Any one of Or two or more mixture；Change is respectively adopted in the evaporator link, absorber link, generator link and condenser link Temperature-heat-source；Generation heating agent, condensation heating agent, evaporation heating agent and the absorption heating agent is fluid liquid or gaseous fluid, liquid State fluid includes water, aqueous solution, non-freezing solution, conduction oil etc., and gaseous fluid includes air, process gas, superheated steam or contains The steam etc. of on-condensible gas.

Compared with prior art, the beneficial effects of the present invention are:

It is external that heat exchanger will occur for absorption type heat pump system provided in an embodiment of the present invention, by strengthen generator absorb it is molten The heat and mass transfer process of liquid working medium evaporation, can reduce the volume of generator, and be more advantageous to using high viscosity or containing dirt Object there is a situation where heating agents, to further increase the performance and economy of heat pump system.Meanwhile by being flashed in generator Chamber to after heating absorbent solution carry out adiabatic flash, can to avoid absorbent occur heat exchanger heat-transfer surface on crystallize and Cause heat and mass obstacle, is particularly advantageous to the second-kind absorption-type heat pump to work under high-concentration absorbent solution condition circulation. Again since contra-flow heat exchanger can be used in the generation heat exchanger of the embodiment of the present invention, it is thus possible to which more efficient occurs heat using alternating temperature Source, specific heating agent include water, aqueous solution, non-freezing solution, conduction oil, air, process gas, superheated steam and contain on-condensible gas Steam etc..

It can also be high in absorber absorbent solution concentration using the second-kind absorption-type heat pump of the generator of the embodiment of the present invention In generator absorbent solution concentration, or even can work under conditions of saturated concentration at a temperature of absorb, thus can be with It realizes and utilizes more low-grade generation heat source, to obtain biggish industrial exhaust heat (further including underground heat and solar heat etc.) temperature product Position is promoted, to be allowed to be more convenient for recycling, it is thus possible to bring significant energy-saving effect and economic benefit to user.

By making absorbent crystalline particle tinyization of supersaturated partial crystallization and having mobility, the present invention can effectively gram Take existing second-kind absorption-type heat pump is faced, generation heat exchanger heat transfer mass transfer obstacle and pipe caused by absorbent crystallization The blockage problem in road etc..In addition, the absorbent solution ownership of system can be then effectively reduced using funnel-shaped bottom portion, so that being The starting time of system is shorter, and cost is lower, while compressive resistance and corrosion resistance are higher.

Further more, producing the second of alternating temperature high temperature heat source especially for using temperature-heat-source in alternating temperature low-temperature heat source and alternating temperature Class absorption heat pump, the first kind absorption type heat that temperature-heat-source in alternating temperature is produced using alternating temperature high temperature heat source and alternating temperature low-temperature heat source Pumping system and the Absorption Cooling System system that alternating temperature low-temperature heat source is produced using temperature-heat-source in alternating temperature high temperature heat source and alternating temperature System, in conjunction with the spray flash distillation and spray-absorption mode of absorbent solution or condensation working medium, by condenser, evaporator and absorber Heat exchanger moves to outside, by using adverse current plate heat exchanger, can significantly improve heat transfer intensity and reduce heat transfer temperature difference, and make Heat pump system simplifies the structure, and be more advantageous to using high viscosity or containing absorbent crystallization absorbent solution the case where, from And it further increases the performance of heat pump system and reduces manufacturing cost, and more easily safeguard.

In addition, since the present invention is external by heat exchanger, so that the shape of generator, condenser, evaporator and absorber It is no longer limited by heat-exchanging tube bundle size with size, thus generator, cold can be designed according to the space at user installation scene The shape and size of condenser, evaporator and absorber.Simultaneously as absorbent solution is flashed in generator flash chamber Journey, condensation working medium are in the flash distillation of spray-absorption process, condensation working medium in evaporator evaporation chamber in condenser condensing chamber The heat and mass rate of the spray-absorption process of process and absorbent solution in absorber absorption chamber is exceedingly fast, thus can show The volume for reducing generator, condenser, evaporator and absorber is write, so that it is substantially reduced the volume of heat pump system entirety, because And it is more advantageous to the popularization and application of absorption type heat pump system.

As external generation heat exchanger, condensing heat exchanger, evaporating heat exchanger or absorption heat-exchange device, the present invention is for being easy Generation heating agent, condensation heating agent, evaporation heating agent or the absorption heating agent for causing fouling or blocking, exchange heat by using dismountable plate type Device can make the maintenance of heat exchanger become simple.

Further more, due to by the way of the flash distillation of the spray of condensation working medium or absorbent solution or spray-absorption, so that hair On-condensible gas in raw device, condenser, evaporator and absorber is to generating process, condensation process, evaporation process and absorption process Heat and mass inhibition significantly reduce.When in particular by cylindrical vessel, since the welding capacity of containment structure material is big Width reduces and is free of inside container heat exchange material, so that the yield of etching extent and then on-condensible gas substantially reduces.

Scheme attached explanation

Fig. 1 is the structural schematic diagram of existing second-kind absorption-type heat pump.

Fig. 2 is the structural schematic diagram of the second-kind absorption-type heat pump of the embodiment of the present invention 1.

Fig. 3 is the structural schematic diagram of the second-kind absorption-type heat pump of the embodiment of the present invention 2.

Fig. 4 is the structural schematic diagram of the second-kind absorption-type heat pump of the embodiment of the present invention 3.

Fig. 5 is the structural schematic diagram of the second-kind absorption-type heat pump of the embodiment of the present invention 4.

Fig. 6 is the first-class absorption type heat pump of the embodiment of the present invention 5 and the structural schematic diagram of absorption system.

Fig. 7 is the first-class absorption type heat pump of the embodiment of the present invention 6 and the structural schematic diagram of absorption system.

Fig. 8 is the first-class absorption type heat pump of the embodiment of the present invention 7 and the structural schematic diagram of absorption system.

Specific embodiment

Present invention is further described in detail combined with specific embodiments below, but not as a limitation of the invention.? In following the description, what different " embodiment " or " embodiment " referred to is not necessarily the same embodiment.In addition, one or more are implemented Special characteristic, structure or feature in example can be combined by any suitable form.

Fig. 2 to Fig. 5 is the example structure schematic diagram of second-kind absorption-type heat pump provided by the invention respectively.Fig. 6 to Fig. 8 It is the example structure schematic diagram of first-class absorption type heat pump and absorption system provided by the invention respectively.It please refers to The generator part of Fig. 2 to Fig. 8, the generator 300 of absorption heat pump, including absorbent solution flash chamber 301, generation heat exchanger 302 and the second absorbent solution spray equipment 303, the outside that heat exchanger 302 is set to absorbent solution flash chamber 301 occurs, absorbs Top in solution flash chamber 301 is equipped with the second absorbent solution spray equipment 303, the second absorbent solution spray equipment 303 with The second absorbent solution spray piping 305 connection outside absorbent solution flash chamber 301, the second absorbent solution spray piping Absorbent solution in absorbent solution flash chamber 301 is delivered to the second absorbent solution spray equipment 303 by 305 to be sprayed, the Two absorbent solution spray pipings 305 are equipped with the second absorbent solution spray pump 304, the second absorbent solution spray piping 305 and hair The cold flow side connection of raw heat exchanger 302, the hot-fluid side that heating agent pipeline occurs and heat exchanger 302 occurs that heat source occurs connect It connects.

The outside that heat exchanger 302 is set to absorbent solution flash chamber 301 will occur for the generator 300 of the present embodiment proposition, After the absorbent solution of second absorbent solution spray piping 305 conveying is via occurring the heat exchange heating of heat exchanger 302, it is delivered to the second suction Solution spraying device 303 is received to be sprayed in the absorbent solution flash chamber 301 of generator 300.It is flashed based on vacuum insulation Principle, so that the fine drop of absorbent solution is carried out vacuum insulation sudden strain of a muscle in the absorbent solution flash chamber 301 in generator 300 It steams.Compared with the cross-current heat exchanger tube of the prior art, the generation heat exchanger 302 in the present embodiment uses adverse current plate heat exchanger, can Complete counterflow heat exchange is realized, to improve heat transfer intensity and reduce heat transfer temperature difference.Using hair provided in an embodiment of the present invention High-concentration absorbent solution can be used in the second-kind absorption-type heat pump of raw device.Even if absorbent solution is concentrated by evaporation and is cooled down, make Supersaturation occurs for absorbent and partial crystallization goes out crystalline particle, since the tiny crystalline particle of generation can be flowed with absorbent solution, because This, after partially crystallizable is delivered to generation heat exchanger 302 by the second absorbent solution spray piping 305, through heat exchange, crystallization can be molten Solution.There is no heat-transfer surfaces in the prior art to lead to problems such as heat and mass be obstructed because of crystallization.In addition, using above-described embodiment Generator second-kind absorption-type heat pump be suitable for using with temperature-variable heat source characteristic low-temperature heat source.

Referring to Fig. 3, as the preferred of above-described embodiment, further solve to may cause using high-concentration absorbent solution Absorbent crystallizes brought problem, and the generator 300 in the embodiment of the present invention further includes equipment for separating liquid from solid, works as absorbent solution When absorbent in absorbent solution in flash chamber 301 crystallizes, absorbent solution is separated into containing absorption by equipment for separating liquid from solid Agent crystallization and two parts without absorbent crystallization, wherein the absorbent solution without absorbent crystallization is sprayed through the second absorbent solution Pipeline 305 is delivered to the second absorbent solution spray equipment 303, and the absorbent solution containing absorbent crystallization is by the first solution circulation pipe Road 510 is delivered in absorber 200.By setting equipment for separating liquid from solid in the present embodiment, to the absorbent knot in absorbent solution Crystalline substance is separated, and is further decreased absorbent and is crystallized the influence to work generator 300.In addition, being separated by solid-liquid separation dress by setting It sets, is free of in the absorbent solution for spraying output or few containing crystallization, the absorption heat pump of the embodiment of the present invention can be made to adopt With the generation heat source of lower temperature grade.

As the preferred of above-described embodiment, referring to Fig. 3, in the present embodiment, equipment for separating liquid from solid includes:

Liquid barrier 371 is connect with the inner wall of the container body of the formation absorbent solution flash chamber 301 of generator 300, gear Interlayer 374, absorbent solution flash chamber are formed between liquid plate 371 and 301 inner wall of absorbent solution flash chamber of generator 300 Absorbent solution in 301 is entered in interlayer by the interlayer entrance 375 of the lower end of liquid barrier 371；

Overflow launder 373 is formed in the outside wall surface of the container body of generator 300, for accommodating by overflowing in interlayer 374 Absorbent solution；

Overflow port 372 is opened on the side wall of the container body of generator 300, and overflow port 372 is connected to interlayer 374 and overflow Slot 373；

Second absorbent solution spray piping 305 is connected to overflow launder 373, the first solution circulating line 510 and absorbent solution The bottom of flash chamber 301 is connected to；Wherein

When the crystallization of the absorbent of absorbent solution, absorbent crystallization, to whereabouts, is fallen on along liquid barrier 371 when absorbent crystallizes When 371 lower end of liquid barrier, partially absorbing agent crystallization can be flowed up with absorbent solution along interlayer, enter the absorbent in interlayer Crystallization is fallen again in gravity, and the bottom of generator 300 is fallen on along the container body inner wall of generator, the suction in interlayer It receives solution and realizes and be separated by solid-liquid separation, the absorbent solution on interlayer top is substantially free of crystallization, and absorbent crystallization passes through the with absorbent solution One solution circulating line 510 is delivered to absorber 200, and absorbent solution is entered in interlayer by 371 lower end of liquid barrier, interlayer internal upper part Divide the absorbent solution without containing absorbent crystallization to enter overflow launder 373 from overflow port 372, and passes through the second absorbent solution spray tube Road 305 is delivered to the second absorbent solution spray equipment 303.The equipment for separating liquid from solid structure of the present embodiment is simple, good separating effect. Absorbent solution after flash distillation is separated by solid-liquid separation in the equipment for separating liquid from solid, then by the absorption of the crystalline particle containing absorbent Solution is sent to absorber；Since absorbent crystalline particle is tiny and has mobility, because without causing absorbent solution circulating pump 550, the blocking of the first absorbent solution spray equipment 203 and the first solution circulating line 510；Since absorbent is in generator 300 lower temperature, the i.e. partial crystallization under lower solubility, and in the higher temperature of absorber 200, i.e. in higher solubility Lower dissolution enables absorber to be higher than the absorbent solution of generator absorbent solution concentration using concentration, it might even be possible to be used in Or the saturated concentration close at a temperature of absorbing, so as to make industrial exhaust heat under conditions of lower generation heat source temperature grade Obtain biggish temperature grade to be promoted, be allowed to be more convenient for recycling, it is thus possible to user bring significant energy-saving effect and Economic benefit.Liquid barrier 371 should be obliquely installed, to improve separating effect.

As the preferred of above-described embodiment, referring to fig. 2 and Fig. 3, under the absorbent solution flash chamber 301 of generator 300 The cross section in portion is gradually reduced, and is in infundibulate.The lower part funneling of the absorbent solution flash chamber 301 of generator 300 (works as appearance When body is cylinder-shaped, the lower part of absorbent solution flash chamber 301 is in inverted conical shape), to suction being not provided with liquid barrier 371 Agent crystalline deposit is received to play a role.In addition, the cross section of the lower part of absorbent solution flash chamber 301, which is gradually reduced, to be had Effect reduces the ownership of liquid, so that the starting time of system is shorter, cost is lower, while compressive resistance and corrosion resistance It is higher.Meanwhile absorbent can be made to crystallize the first absorbent solution being delivered in absorber 200 by the first solution circulating line 510 Spray equipment 203.

On the other hand, the embodiment of the invention provides a kind of second-kind absorption-type heat pumps, and referring to fig. 2 to Fig. 5, this is absorption Heat pump system includes evaporator 100, absorber 200, generator 300 and condenser 400；Evaporator 100 evaporates chamber 101 and inhales The absorption chamber 201 for receiving device 200 is connected to by the first refrigerant vapor channel 700, the condensing chamber 401 of condenser 400 and generation The absorbent solution spray chamber 301 of device 300 by the connection of the second refrigerant vapor channel 800, generator 300 and absorber 200 it Between the circulation of absorbent solution is realized by solution circulating line, wherein the first solution circulating line 510 is by absorbent solution by occurring Device 300 is delivered to absorber 200, and absorbent solution is delivered to generator 300 by absorber 200 by the second solution circulating line 520, First solution circulating line 510 and the second solution circulating line 520 are equipped with solution heat exchanger 530, the first solution circulating line 510 and second the absorbent solution that conveys in solution circulating line 520 heat exchange, evaporator are carried out by solution heat exchanger 530 100 and condenser 400 connected by working medium pipeline 610, the working medium in condenser 400 is delivered to evaporator by working medium pipeline 610 100, wherein generator 300 is generator described in any of the above-described embodiment.

It is external that heat exchanger will occur for second-kind absorption-type heat pump provided in an embodiment of the present invention, occur heat exchanger can be used it is inverse Flow plate heat exchanger, thus improve heat transfer intensity and reduce heat transfer temperature difference, and can be more efficient utilize temperature-variable heat source, use Heating agent include water, hot-air, conduction oil, superheated steam and steam containing on-condensible gas etc..It can sent out to avoid absorbent It crystallizes on the heat-transfer surface of raw heat exchanger and causes heat and mass obstacle, be particularly advantageous to work under high-concentration absorbent solution condition Second-kind absorption-type heat pump circulation.Therefore, second-kind absorption-type heat pump can be higher than generator in absorber absorbent solution concentration It works under conditions of absorbent solution concentration, so as to realize using more low-grade generation heat source, to obtain biggish industry Waste heat (further including underground heat and solar heat etc.) temperature grade is promoted, to be allowed to be more convenient for recycling, it is thus possible to use Bring significant energy-saving effect and economic benefit in family.By making absorbent crystalline particle tinyization of supersaturated partial crystallization and there is stream Dynamic property, the present invention can also be faced efficiently against the existing second-kind absorption-type heat pump, hair caused by absorbent crystallization Give birth to the blockage problem of heat exchanger heat transfer mass transfer obstacle and pipeline etc..

It is unmentioned in above-described embodiment, for flow valve and liquid pump etc. necessary to system circulation, art technology Personnel should know, or obtain from the prior art.Such as in second-kind absorption-type heat pump, working medium pipeline 610 is equipped with working medium Pump 620, in order to which working medium is delivered to evaporator from condenser by working medium pipeline 610；It is set on first solution circulating line 510 There is absorbent solution circulating pump 550, the second solution circulating line 520 is equipped with throttle valve 540.And for first-class absorption type heat pump System or absorption system, due in outer loop pipeline liquid flow direction with second-kind absorption-type heat pump on the contrary, because This, when working medium is delivered to evaporator from condenser by working medium pipeline 610, does not need working medium pump 620, only needs on working medium pipeline 610 Throttling valve 630 is set；And throttle valve 540 and absorbent solution circulating pump 550 then need transposition, i.e. throttle valve 540 are set on the first solution circulating line 510, and absorbent solution circulating pump 550 is set on the second solution circulating line 520.

As the preferred of above-described embodiment, referring to fig. 4 and Fig. 8, Fig. 4 are that the second class that one embodiment of the invention provides absorbs Formula heat pump, Fig. 8 are the first-class absorption type heat pump that one embodiment of the invention provides.Wherein, absorber 200 includes absorption chamber 201, absorption heat-exchange device 202 and the first absorbent solution spray equipment 203, absorption heat-exchange device 202 are set to outside absorption chamber 201, Absorption heat-exchange device 202 is contra-flow heat exchanger, is equipped with the first absorbent solution spray piping 205, absorption heat-exchange outside absorption chamber 201 Device 202 is set on the first absorbent solution spray piping 205, and the first absorbent solution spray piping 205 connects absorption chamber 201 and the One absorbent solution spray equipment 203, the first absorbent solution spray piping 205 are equipped with the first absorbent solution spray pump 204.First Absorbent solution spray pump 204 is by the absorbent solution in absorption chamber 201 by the first absorbent solution spray piping 205 through absorption heat-exchange Device 202 is sent after exchanging heat to the first absorbent solution spray equipment 203, and the first absorbent solution spray equipment 203 is inhaling absorbent solution Spray in chamber 201 is received, absorbent solution absorbs the indoor refrigerant vapor of evaporation cavity.The present embodiment is external in evaporating heat exchanger 102 On the basis of, absorption heat-exchange device 202 is also external, the heat and mass transfer process of absorber part is enhanced, is further increased entire The performance of heat pump system.In second-kind absorption-type heat pump, the heat of the first absorbent solution spray piping 205 and absorption heat-exchange device 202 Fluid side connection, the cold flow side of absorption heat-exchange device 202 are connected with heating agent pipeline is absorbed.

As the preferred of above-described embodiment, referring to fig. 4 and Fig. 8, the cross section of 201 bottom of absorption chamber are gradually reduced.When When the container body of absorber 200 is using cylindrical shape, the bottom of absorption chamber 201 is inverted conical shape.The guarantor of liquid can be effectively reduced The amount of having, so that the starting time of system is shorter, cost is lower, while compressive resistance and corrosion resistance are higher.

As the preferred of above-described embodiment, the first solution circulating line 510 connects the first absorbent solution spray equipment 203. On the basis of the above embodiments, the first solution circulating line 510 and the first absorbent solution spray equipment 203 are connected for the present embodiment It connects, so that the suction of the absorbent solution of the first solution circulating line 510 conveying and the conveying of the first absorbent solution spray piping 205 Receipts solution mixing, which is sent to the first absorbent solution spray equipment 203, to be sprayed.Power loss can be further decreased.

As the preferred of above-described embodiment, referring to fig. 4, evaporator 100 include evaporation chamber 101, evaporating heat exchanger 102, Working medium spray piping 105, working medium spray pump 104 and working medium spray equipment 103, evaporating heat exchanger 102 are set to outside evaporation chamber 101 Portion, evaporating heat exchanger 102 are contra-flow heat exchanger, and evaporating heat exchanger 102 and working medium spray pump 104 are set to working medium spray piping 105 On, the working medium spray pump 104 on working medium spray piping 105 will evaporate the working medium in chamber 101 by working medium spray piping 105 It is sent after the heat exchange of evaporating heat exchanger 102 to working medium spray equipment 103, working medium spray equipment 103 is by working medium in evaporation chamber 101 Spray, evaporation chamber 101 are flash distillation chamber, and working medium flash distillation in evaporation chamber 101 is steam.Working medium spray piping 105 and evaporation The cold flow side of heat exchanger 102 connects.

The evaporating heat exchanger 102 of evaporator 100 is moved to the outside of evaporation chamber 101 by the embodiment of the present invention, can make heat Pumping system simplifies the structure, and by using adverse current plate heat exchanger, the heat transfer intensity and reduction for improving evaporating heat exchanger are changed The hot temperature difference, in addition, by using dismountable plate type heat exchanger, can make for the evaporation heating agent for easily causing fouling or blocking The maintenance of heat exchanger becomes the case where being simply also beneficial to the absorbent solution using high viscosity or containing absorbent crystallization, thus Further increase the performance and economy of heat pump system.Especially for using alternating temperature low-temperature heat source absorption heat pump, in conjunction with Spray flash distillation, so that working medium rapid evaporation reduces power loss to reduce working medium outer loop flow.

As the preferred of above-described embodiment, the container body for forming evaporation chamber 101 is cylindrical shape.In the present embodiment, evaporation The container body of device 100 improves the compressive property of evaporator 100 using cylindrical shape.And in the prior art, due to evaporating heat exchanger Built in 102, in order to improve the working medium of spray and the heat transfer effect of evaporating heat exchanger 102, the shell-and-tube using square arrangement is needed Heat exchanger, the container body of evaporator 100 are typically only capable to using cuboid, and compressive property is poor.

As the preferred of above-described embodiment, referring to Fig. 5.Fig. 5 is the absorption type heat pump system that one embodiment of the invention provides Structural schematic diagram.Wherein, evaporator 100 and absorber 200 share same container body, which is cylindrical shape, container body The evaporation chamber 101 of evaporator 100 is formed at the top of inner cavity chamber, and the absorption chamber 201 of absorber 200, working medium spray are formed at lower part Shower device 103 is set to the top of the evaporation chamber 101 of evaporator, and the lower part of evaporation chamber 101 is equipped with working medium receiver 106, work Matter receiver 106 is for accommodating unevaporated condensation working medium, and working medium receiver 106 is connect with working medium spray piping 105, and working medium connects It receives and forms the first refrigerant vapor channel 700 between the outer wall of device 106 and the inner wall of evaporation chamber 101.Evaporator in the present embodiment 100 and absorber 200 share same container body, which is cylindrical shape, has the characteristics that compressive property is high, and structure is simple It is single.

As the preferred of above-described embodiment, evaporating chamber 101 includes first segment and second segment, and wherein the internal diameter of first segment is small In the internal diameter of second segment, working medium receiver 106 is set to second segment, and working medium spray equipment 103 is set to first segment, working medium receiver 106 diameter is more than or equal to the internal diameter of the first segment of evaporation chamber.The present embodiment passes through different two sections of setting internal diameter, makes to spray Working medium entirely fall in working medium receiver 106.In addition, the heat and mass rate using evaporation process is greater than absorption process The characteristic of heat and mass rate makes the volume for evaporating chamber be less than the volume of absorption chamber, reduces installation space, drop to reach The purpose of low materials'use amount and cost.

As the preferred of above-described embodiment, the lower end of first segment is equipped with working medium flow-guiding structure 109, working medium flow-guiding structure 109 Working medium on first segment inner wall is imported in working medium receiver 106.By the way that working medium flow-guiding structure 109 is arranged, make spray first Working medium on section inner wall can be entirely fallen in working medium receiver 106.The specific configuration of working medium flow-guiding structure 109 is unlimited, only It all to be imported in working medium receiver 106 using the working medium that will be sprayed.It is simple to present embodiments provide a kind of structure, is easy to The working medium flow-guiding structure of manufacture, the working medium flow-guiding structure are working medium deflector, and working medium deflector is from the lower end of first segment to downward It stretches, working medium deflector protrudes into the space below first segment.In this way, the working medium on first segment inner wall can be fallen along working medium deflector Enter in working medium receiver 106.

As the preferred of above-described embodiment, working medium pipeline 610 is connect with working medium spray equipment 103.Working medium pipeline 610 conveys Working medium mixed with the working medium that working medium spray piping 105 conveys after sprayed by working medium spray equipment.Further reduce work Working medium is directly inputted in evaporation chamber 101 compared with working medium pipeline 610 and more saves power by the flow in matter spray piping 105.

As the preferred of above-described embodiment, the first solution circulating line 510 and the second solution circulating line 520 are equipped with molten The absorbent solution conveyed in liquid heat exchanger 530, the first solution circulating line 510 and the second solution circulating line 520 passes through solution Heat exchanger 530 carries out heat exchange.By being followed between absorber 200 and generator 300 for absorbent solution in the present embodiment Solution heat exchanger 530 is set on the solution circulating line of ring, realizes absorbent solution and carries out heat exchange in cyclic process, into one Step improves the thermal efficiency of heat pump.

As the preferred of above-described embodiment, absorbent solution circulating line is equipped with throttle valve 540, and throttle valve 540, which is set to, to be inhaled It receives between device 200 and solution heat exchanger 530.In second-kind absorption-type heat pump system, throttle valve 540 is set to the second solution circulation pipe On road 520.In first-class absorption type heat pump system or absorption system, throttle valve 540 is set to the first solution circulation pipe On road 510.Especially in second-kind absorption-type heat pump, the present embodiment can prevent Crystallization Plugging due to temperature reduces of throttle valve 540. The outlet 531 of solution heat exchanger 530 on second solution circulating line 520 is set to close to generator 300.I.e. the second solution follows The absorbent solution that endless tube road 520 conveys, should be with distance input short as far as possible to generator 300 after the output of solution heat exchanger 530 It is interior.

As the preferred of above-described embodiment, condenser 400 includes condensing chamber 401, condensing heat exchanger 402, condensation working medium Spray equipment 403, condensation working medium spray piping 405 and condensation working medium spray pump 404, condensation working medium spray equipment 403 are set to cold In solidifying chamber 401, condensation working medium spray piping 405 is set to outside condensing chamber 401, condensing heat exchanger 402 and condensation working medium spray Leaching pump 404 be set to condensation working medium spray piping 405 on, condensation working medium spray pump 404 by the condensation working medium in condensing chamber 401 by Condensation working medium spray piping 405 is delivered to condensation working medium spray equipment 403 after condensing heat exchanger 402, condenses working medium spray tube Road 405 is connected with the hot-fluid side of condensing heat exchanger 402, cold flow side and the condensation heating agent pipeline phase of condensing heat exchanger 402 Connection.It is in the present embodiment that condensing heat exchanger 402 is external, it can be achieved that working medium carries out counterflow heat exchange in condensing heat exchanger 402.It is cold Dismountable plate type heat exchanger can be used in solidifying heat exchanger 402, realizes complete counterflow heat exchange, improves heat transfer effect, and for holding The condensation heating agent for easily causing fouling or blocking, is safeguarded convenient for heat exchanging device.

As the preferred of above-described embodiment, same container body is shared to Fig. 8, generator 300 and condenser 400 referring to fig. 2, The top of the intracorporal chamber of the container is the condensing chamber 401 of condenser 400, and the lower part of the container chamber inside body is generator 300 absorbent solution flash chamber 301, lower part is equipped with condensation working medium receiver 406 in condensing chamber 401, and condensation working medium receives The second refrigerant vapor channel 800 is formed between the outer wall of device 406 and the inner wall of container body, condenses working medium receiver 406 and working medium Pipeline 610 connects.The condensing heat exchanger of condenser is connected with condensation heating agent pipeline, and condensation heating agent is carried out by condensing heat exchanger Heat exchange absorbs working medium condensation heat.Absorbent solution through the second absorbent solution spray equipment 303 spray flashes chamber in absorbent solution Flash distillation, the working medium of evaporation condense in condensing chamber 401 in room 301, and condensation working medium receiver 406 accepts refrigerant vapor and condenses shape At liquid working substance, working medium pipeline 610 is delivered to evaporator 100 for the liquid working substance accepted of working medium receiver 406 is condensed.Condensation Device 400 and generator 300 share a container body, and container body internal upper part forms condensing zone, and lower part forms flash zone, further mentions High performance and reduce cost.

In the case where generator 300 and condenser 400 share same cylindrical vessel body, condensing heat exchanger can be built-in It can also be external.Wherein when built in condensing heat exchanger, condensing heat exchanger 402 is located at the top of condensation working medium receiver 406.Hair The refrigerant vapor generated in the absorbent solution flash chamber 301 of raw device 300 is cooling through condensing heat exchanger 402, is condensed into liquid, and It falls in condensation working medium receiver 406.

When condensing heat exchanger 402 is external, condenser 400 includes condensing chamber 401, condensing heat exchanger 402, condensation working medium Spray equipment 403, condensation working medium spray piping 405, condensation working medium spray pump 404 and condensation working medium receiver 406, condense working medium Spray equipment 403 is set in condensing chamber 401, is located at condensation working medium receiver 406 top, condensation working medium spray piping 405 with Working medium receiver 406 is condensed to connect.It is in the present embodiment that condensing heat exchanger 402 is external, it can be achieved that working medium is in condensing heat exchanger 402 Interior carry out counterflow heat exchange.

As the preferred of above-described embodiment, condensing chamber 401 includes first segment and second segment, and wherein the internal diameter of first segment is small In the internal diameter of second segment, condenses working medium receiver 406 and be set to second segment, condensation working medium spray equipment 403 is set to first segment, condensation The diameter of working medium receiver 406 is more than or equal to the internal diameter of the first segment of evaporation chamber.The present embodiment is different by setting internal diameter Two sections, entirely fall in condensation working medium in condensation working medium receiver 406.In addition, sharing an appearance in condenser and generator In the case where device, the internal diameter of absorbent solution flash chamber 301 is consistent with the internal diameter of 401 second segment of condensing chamber.Using condensing The heat and mass rate of journey is greater than the characteristic of the heat and mass rate of generating process, and the volume of condensing chamber is made to be less than flash chamber Volume, to achieve the purpose that reduce installation space, reduce materials'use amount and cost.

As the preferred of above-described embodiment, the lower end of the first segment of condensing chamber 401 is equipped with condensation working medium flow-guiding structure 409, condensation working medium flow-guiding structure 409 imports the condensation working medium on first segment inner wall in condensation working medium receiver 406.By setting Set condensation working medium flow-guiding structure 409, allow to spray the condensation working medium on first segment inner wall entirely fall in condensation working medium connect It receives in device 406.The specific configuration for condensing working medium flow-guiding structure 409 is unlimited, as long as all importing condensation using the working medium that will be sprayed In working medium receiver 406.Present embodiments provide that a kind of structure is simple, easily fabricated condensation working medium flow-guiding structure should Condensing working medium flow-guiding structure is condensation working medium deflector, and condensation working medium deflector is extended downwardly by the lower end of first segment, cold Solidifying working medium deflector protrudes into the space below first segment.In this way, the condensation working medium on first segment inner wall can be along condensation working medium water conservancy diversion Plate is fallen into condensation working medium receiver 406.

On the other hand, the embodiment of the invention provides a kind of absorption heat pump cycle method, please refer to Fig. 2 to Fig. 5 and on The description as described in absorption heat pump is stated, absorption heat pump cycle method provided in an embodiment of the present invention includes evaporator link, inhales Device link, generator link and condenser link are received, wherein

Absorber link, absorbent solution absorb the refrigerant vapor that evaporator generates and release the absorption heat of high temperature, absorbs Heat is output to the outside by flowing through the absorption heating agent of absorption heat-exchange device, and the absorbent solution in absorber is transported in generator；

Absorption heat pump cycle method provided in an embodiment of the present invention by absorbent solution outside the container body of generator into Row heating, can to avoid occur heat exchanger built in when, absorbent occur heat exchanger heat-transfer surface on crystallize and cause heat transfer pass Matter obstacle is particularly advantageous to the second-kind absorption-type heat pump to work under high-concentration absorbent solution condition.Again due to of the invention real Contra-flow heat exchanger can be used in the generation heat exchanger for applying example, it is thus possible to which more efficient occurs heat source, including water, heat sky using alternating temperature Gas, conduction oil, superheated steam and steam containing on-condensible gas etc..Especially second-kind absorption-type heat pump can also be inhaled in absorber It receives under conditions of solution concentration is higher than generator absorbent solution concentration and works, therefore may be implemented to utilize more low-grade generation heat Source is promoted to obtain biggish industrial exhaust heat (further including underground heat and solar heat etc.) temperature grade, to be allowed to more Yu Xunhuan It utilizes, it is thus possible to bring significant energy-saving effect and economic benefit to user.By crystallizing the absorbent of supersaturated partial crystallization Particle tinyization and there is mobility, it is that the present invention can be faced efficiently against existing second-kind absorption-type heat pump, by inhaling Receive the blockage problem that heat exchanger heat transfer mass transfer obstacle and pipeline etc. occur caused by agent crystallization.

Evaporator link, absorber link and condenser link in above-described embodiment can be same as the prior art, or knot Close each embodiment for stating absorption type heat pump system, each link in absorption heat pump cycle method provided in an embodiment of the present invention Can accordingly it be changed.

It is absorbed as the preferred of above-described embodiment in conjunction with the external embodiment of absorption heat-exchange device in absorption type heat pump system Device link, the indoor absorbent solution of the absorbing cavity of absorber are exported via the first absorbent solution spray piping, the first absorbent solution The absorbent solution of spray piping conveying is delivered to indoor first suction of absorbing cavity positioned at absorber after the heat exchange of absorption heat-exchange device It receives solution spraying device to be sprayed, the absorbent solution sprayed out absorbs the refrigerant vapor of evaporator generation simultaneously in absorption chamber The absorption heat of high temperature is released, the absorption heat is output to the outside by the absorption heating agent on the cold flow side of absorption heat-exchange device.

As the preferred of above-described embodiment, the first absorbent solution spray equipment is delivered to by the absorbent solution that generator conveys It is sprayed.The present embodiment can further decrease outer loop flow, reduce power loss.

As the preferred of above-described embodiment, in conjunction with the external embodiment of evaporating heat exchanger in absorption type heat pump system, wherein Evaporator link, the indoor working medium of the evaporation cavity of evaporator via working medium spray piping export, working medium spray piping conveying Working medium is delivered to the indoor working medium spray equipment of evaporation cavity positioned at evaporator after evaporating heat exchanger heat exchange and is sprayed, It is refrigerant vapor that a part of the working medium sprayed out flashes in evaporation cavity room, and refrigerant vapor is transported in absorber.It is evaporating The indoor working medium of link evaporation cavity is exported by working medium spray piping, and carries out counterflow heat exchange through external evaporating heat exchanger, so After be delivered to and sprayed positioned at the indoor working medium spray equipment of evaporation cavity, a part of the working medium sprayed out is in evaporation cavity room Flash distillation is steam, and is delivered to quilt in absorption chamber through the first refrigerant vapor channel under the strong absorption of absorbent solution in absorber Absorbent solution absorbs.The circulation of other parts can be same as the prior art in the present embodiment.

As the preferred of above-described embodiment, in conjunction with the external embodiment of condensing heat exchanger in absorption type heat pump system, wherein Condenser link, condense working medium spray pump by the indoor condensation working medium of condensation chamber by condensation working medium spray piping through condensing heat-exchange Condensation working medium spray equipment, the working medium that condensation working medium generates generator after condensation working medium spray equipment spray are delivered to after device Steam is condensed and is released condensation heat, and condensation heat is taken away by the condensation heating agent in condensing heat exchanger.The present embodiment is further Strengthen the heat and mass transfer process of whole system.

As the preferred of above-described embodiment, the heat of working medium from the evaporation heating agent absorption in evaporating heat exchanger is industrial exhaust heat The either heat of underground heat or solar heat or air conditioner coolant.The system and method for the embodiment of the present invention can be used more low-grade Generation heat source, come obtain biggish industrial exhaust heat (further including underground heat and solar heat etc.) temperature grade promoted, to be allowed to It is more convenient for recycling, it is thus possible to bring significant energy-saving effect and economic benefit to user.

As the preferred of above-described embodiment, the absorbent solution in absorber after the throttle throttling, into solution heat exchanger In with from generator absorbent solution heat exchange after be transported in generator.

As the preferred of above-described embodiment, absorbent solution is changed in cyclic process by solution between absorber and generator Hot device carries out heat exchange.

As the preferred of upper embodiment, it is equipped with equipment for separating liquid from solid in generator, when absorbent solution is steamed in flash process Hair concentration and cooling, supersaturation occurs for absorbent and partial crystallization when going out tiny and crystalline particle with mobility, in generator Absorbent solution is separated by solid-liquid separation by equipment for separating liquid from solid, and the absorbent solution containing absorbent crystalline particle is by solution circulation pump It is transported to absorber, the absorbent solution without containing absorbent crystallization is conveyed by the second absorbent solution spray pump, through heat exchanger occurs After be transported to the second absorbent solution spray equipment.

As the preferred of above-described embodiment, used working medium is water, and the absorbent of use can be selected from following LiBr, LiNO₃, LiCl and CaCl₂At least one of；Heating agent, condensation heating agent, evaporation heating agent occurs and absorbs heating agent for fluid liquid Or gaseous fluid, wherein fluid liquid includes water, aqueous solution, non-freezing solution, conduction oil etc., and gaseous fluid includes air, technique Gas, superheated steam and steam containing on-condensible gas etc..

By the description of the various embodiments described above and preferred embodiment, and combine Fig. 2-Fig. 8 it is found that in the embodiment of the present invention Evaporator 100, absorber 200, generator 300 and condenser 400 can be used for absorption system, first-class absorption type heat pump System is with the absorption heat pump of, second-kind absorption-type heat pump system other forms.

Existing second-kind absorption-type heat pump institute may be implemented in absorption heat pump provided in an embodiment of the present invention and round-robin method The operating mode that cannot achieve.It is illustrated by the temperature curve of the saturated vapour pressure of absorbent solution, existing second class The generator of absorption heat pump is the work on a point of the temperature curve of the saturated vapour pressure of an absorbent unsaturation solution Make, and absorber is in saturated vapour pressure of another concentration lower than the absorbent unsaturation solution of one deflation range of generator Temperature curve on a point on work, the temperature of absorber operating point is higher than the temperature of generator operating point.In contrast, The generator of absorption heat pump of the invention is the saturated vapour pressure of i.e. absorbent saturated solution under absorbent saturated concentration Temperature curve a point on work, and absorber is on the temperature curve of the saturated vapour pressure of same saturated solution It works on another aspect of (or close to this curve), the temperature of absorber operating point is higher than the temperature of generator operating point. Since the saturation solubility of temperature more high-selenium corn agent is bigger, so heat pump system of the invention is in the dense of absorber absorbent solution Degree is run under conditions of being higher than the concentration of generator absorbent solution.Therefore, the present invention can use more low-grade generation heat Source is promoted to obtain biggish industrial exhaust heat (further including underground heat and solar heat etc.) temperature grade, to be allowed to be more convenient for following Ring utilizes, it is thus possible to bring significant energy-saving effect and economic benefit to user.In addition, by making in the embodiment of the present invention It is saturated absorbent crystalline particle tinyization of partial crystallization and there is mobility, it can be efficiently against existing second-kind absorption-type heat pump Blockage problem faced, that caused generation heat exchanger heat transfer mass transfer obstacle and pipeline etc. are crystallized by absorbent.

The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.

Claims

1. the generator of absorption heat pump, which is characterized in that including absorbent solution flash chamber, the second absorbent solution spray dress Set, the second absorbent solution spray piping, the second absorbent solution spray pump and occur heat exchanger, occur heat exchanger be set to absorb it is molten The outside of liquid flash chamber, the top in absorbent solution flash chamber are equipped with the second absorbent solution spray equipment, second absorb it is molten Liquid spray equipment is connect with the second absorbent solution spray piping being set to outside absorbent solution flash chamber, the spray of the second absorbent solution Absorbent solution in absorbent solution flash chamber is delivered to the second absorbent solution spray equipment and sprayed by shower pipe road, and second inhales It receives solution spraying pipeline and is equipped with the second absorbent solution spray pump, the second absorbent solution spray piping and the cold flow that heat exchanger occurs Side connection, the generation heating agent pipeline that heat source occurs are connect with the hot-fluid side that heat exchanger occurs.

2. the generator of absorption heat pump according to claim 1, which is characterized in that the generation heat exchanger is that adverse current is changed Hot device.

3. the generator of absorption heat pump according to claim 1, which is characterized in that the generator further includes solid-liquid point From device, when the absorbent in the absorbent solution in the absorbent solution flash chamber of the generator crystallizes, the separation of solid and liquid The absorbent solution is separated into the two parts crystallized containing absorbent and without absorbent crystallization by device, wherein being free of absorbent The absorbent solution of crystallization is delivered to the second absorbent solution spray equipment through the second absorbent solution spray piping, crystallizes containing absorbent Absorbent solution be delivered in absorber by the first solution circulating line.

4. the generator of absorption heat pump according to claim 3, which is characterized in that the equipment for separating liquid from solid includes:

Liquid barrier is connect, liquid barrier and generator with the inner wall of the container body of the formation absorbent solution flash chamber of generator Absorbent solution flash chamber inner wall between form interlayer, the absorbent solution in absorbent solution flash chamber is by under liquid barrier The interlayer entrance at end enters in interlayer；

Second absorbent solution spray piping is connected to overflow launder, the bottom of the first solution circulating line and absorbent solution flash chamber Connection；Wherein

When the crystallization of the absorbent of absorbent solution, absorbent crystallization falls on hair along the container body inner wall of liquid barrier and generator The bottom of raw device, the absorbent for falling on bottom, which is crystallized, is delivered to absorber by the first solution circulating line with absorbent solution, inhales Solution is received to be entered in interlayer by liquid barrier lower end, the absorbent solution of interlayer internal upper part point without containing absorbent crystallization from overflow port into Enter overflow launder, and the second absorbent solution spray equipment is delivered to by the second absorbent solution spray piping.

5. the generator of absorption heat pump according to claim 4, which is characterized in that the absorbent solution of the generator is dodged The cross section for steaming the lower part of chamber is gradually reduced, and is in infundibulate, and the liquid barrier is obliquely installed.

6. absorption heat pump, including evaporator, absorber, generator and condenser, the evaporator and absorber pass through first The connection of refrigerant vapor channel, the condenser are connected to generator by the second refrigerant vapor channel, the generator and absorption It is connected between device by the first solution circulating line and the second solution circulating line, the first solution circulating line will absorb molten Liquid is delivered to absorber by generator, and absorbent solution is delivered to generator by absorber by the second solution circulating line, institute It states the first solution circulating line and the second solution circulating line and is equipped with solution heat exchanger, the first solution circulating line and second molten The absorbent solution conveyed in liquid circulating line carries out heat exchange by solution heat exchanger, and the evaporator and condenser pass through work Working medium in the condenser is delivered to evaporator by the connection of matter pipeline, the working medium pipeline, which is characterized in that the generator For generator described in any one of claims 1 to 5.

7. absorption heat pump according to claim 6, which is characterized in that the condenser includes condensing chamber, condenses and change Hot device, condensation working medium spray equipment, condensation working medium spray piping and condensation working medium spray pump, the generator and the condenser Share same container body, the top of the container chamber inside body is the condensing chamber of condenser, under the container chamber inside body Portion forms the absorbent solution flash chamber of generator, and the lower part of the condensing chamber is equipped with condensation working medium receiver, the condensation The second refrigerant vapor channel, the condensation working medium receiver are formed between the outer wall of working medium receiver and the inner wall of the container body It is connect with working medium pipeline, the condensation working medium spray equipment is set in condensing chamber, and the condensation working medium spray piping is set to cold Solidifying exterior thereto, the condensing heat exchanger and condensation working medium spray pump are set on condensation working medium spray piping, the condensation working medium The indoor condensation working medium of condensation chamber is delivered to condensation working medium spray by condensation working medium spray piping by spray pump after condensing heat exchanger Shower device, condensation working medium spray piping are connected with the hot-fluid side of the condensing heat exchanger, the cold flow side of condensing heat exchanger It is connected with condensation heating agent pipeline.

8. absorption heat pump cycle method, including evaporator link, absorber link, generator link and condenser link, In

Evaporator link, working medium absorb heat from the evaporation heating agent for flowing through evaporating heat exchanger and are evaporated to refrigerant vapor, the work Matter steam is transported in absorber；

Absorber link, absorbent solution absorb the refrigerant vapor that evaporator generates and release absorption heat, and the absorption heat passes through The absorption heating agent for flowing through absorption heat-exchange device is output to the outside, and the absorbent solution in absorber is transported in generator；

Generator link, positioned at the absorbent solution flash chamber top of generator the second absorbent solution spray equipment to heating after Absorbent solution sprayed, so that the fine drop of absorbent solution is carried out vacuum in the absorbent solution flash chamber of generator exhausted Flash evaporation；The refrigerant vapor that flash distillation generates is delivered to condenser；Absorbent solution is concentrated by evaporation and is cooled down in flash process； Absorbent solution after flash distillation falls on the bottom of absorbent solution flash chamber, and a part of absorbent solution is through the second absorbent solution spray pump Into the generation heat exchanger being set to outside generator, the heat of heat source occurs by the way that heat exchanger and generation heating agent heat exchange absorption occurs Amount, the absorbent solution after heating are transported to the second absorbent solution spray equipment；A part of absorbent solution is conveyed through solution circulation pump The first absorbent solution spray equipment in absorber is sprayed；

Condenser link, condense to the refrigerant vapor that generator generates and absorption condensation heat, the condensation heat are cold by flowing through Condensation heating agent in solidifying heat exchanger is taken away；The liquid working substance for condensing formation within the condenser is transported to evaporation via working medium pipeline Device.

9. absorption heat pump cycle method according to claim 8, which is characterized in that the condenser link condenses work The indoor condensation working medium of condensation chamber is delivered to after external condensing heat exchanger cold by matter spray pump by condensation working medium spray piping Solidifying working medium spray equipment, the refrigerant vapor that condensation working medium generates generator after condensation working medium spray equipment spray condense And absorption condensation heat, the condensation heat are taken away by the condensation heating agent in external condensing heat exchanger.

10. absorption heat pump cycle method according to claim 8, which is characterized in that be equipped with and be separated by solid-liquid separation in generator Device, when absorbent solution is concentrated by evaporation in flash process and is cooled down, supersaturation occurs for absorbent and partial crystallization goes out tiny and has When the crystalline particle of mobility, the absorbent solution in generator is separated by solid-liquid separation by equipment for separating liquid from solid, contains absorbent The absorbent solution of crystalline particle is transported to absorber by solution circulation pump, and the absorbent solution without containing absorbent crystallization is inhaled by second Solution spraying pump conveying is received, the second absorbent solution spray equipment is transported to after heat exchanger occurs.

11. absorption heat pump cycle method according to claim 8, which is characterized in that the evaporator link, absorber Temperature-variable heat source is respectively adopted in link, generator link and condenser link；The generation heating agent, condensation heating agent, evaporation heating agent And absorbing heating agent is fluid liquid or gaseous fluid.