A gravity-fed ejector driven diffusion-absorption heat transformer

Abstract

The application provides a kind of ejector-driven diffusion-absorption heat transformer based on gravity liquid supply, comprising jet generator, solution separator, refrigerant condenser, refrigerant separator, refrigerant reservoir, evaporator, absorber, solution heat exchanger, solution reservoir, diffusion condenser, first diffusion reservoir, second diffusion reservoir, third diffusion reservoir, diffusion evaporator; the application simplifies diffusion generator device, and diffusion evaporator is directly inputted with heat source to make it occur, and the system circulation structure is greatly simplified by using heat-driven jet generator to realize refrigerant and solution pumping and separation; at the same time, without using electrically-driven pump, the problem of high-temperature solution corrosion is avoided, and the stability and reliability of system operation are improved. The application can utilize industrial waste heat, solar energy and geothermal energy and other low-grade heat energy, and has important significance for improving energy utilization rate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of absorption heat transformer, in particular to a ejector driven diffusion absorption heat transformer based on gravity liquid supply. BACKGROUND

[0002] Absorption heat transformer, also known as the second type of absorption heat pump, can improve the medium temperature heat to high temperature heat, improve the grade of medium temperature heat, and realize the recycling of low grade heat energy under the consumption of a small amount of electric energy; and using natural working medium such as H2O-LiBr solution, it has environmental friendliness, so it has important significance for energy saving and environmental protection. Although the absorption heat transformer can realize the utilization of low grade heat, the power consumption still exists, and the solution pump also faces the problem of high temperature corrosion, which is not conducive to its large-scale popularization and application.

[0003] Diffusion absorption heat transformer technology is developed from diffusion absorption refrigeration technology, which has the characteristics of small pressure difference in the system and does not need mechanical pump. The system includes diffusion agent generation absorption module and refrigerant generation absorption module, and bubble pumps are arranged on the diffusion side and the refrigerant side to transport the fluid and realize the generation absorption of the diffusion agent and the refrigerant. It does not consume any electric energy and has no mechanical moving parts, avoiding the high temperature corrosion problem of electrically driven pump, and is also more free in the selection of working medium.

[0004] At present, the diffusion absorption heat transformer in the form of double bubble pump has been studied a lot. The input heat of the diffusion agent evaporator accounts for most of the total input heat, and the diffusion agent generation absorption module has a great influence on the system efficiency. At the same time, since the bubble pump applied to the diffusion absorption heat transformer has not been fully studied, the theoretical analysis is not perfect; the actual performance of the bubble pump is affected by many factors, which finally leads to poor accuracy of the performance analysis of this kind of diffusion absorption heat transformer. SUMMARY

[0005] According to the above technical problem, a ejector driven diffusion absorption heat transformer based on gravity liquid supply is provided. In order to eliminate the adverse effects of bubble pump, the ejector with simple structure and perfect research theory is used to replace the bubble pump, and low grade heat source can also be used to realize full heat driven. In particular, the system realizes the simultaneous pumping of the diffusion agent and the refrigerant and the absorbent solution through a ejector, and the diffusion agent and the refrigerant are graded condensed.

[0006] The technical means adopted by the present application are as follows:

[0007] A ejector driven diffusion absorption heat transformer based on gravity liquid supply, the heat transformer comprises a diffusion agent generation module and a refrigerant generation absorption module;

[0008] The refrigerant absorption module comprises an ejector, a solution separator, a refrigerant condenser, a refrigerant separator, a refrigerant reservoir, an evaporator, an absorber, a solution heat exchanger, and a solution reservoir.

[0009] The solution reservoir outlet of the solution reservoir is connected with the ejector suction port of the ejector; the ejector injection port of the ejector is connected with the solution separator liquid inlet of the solution separator; the solution separator gas outlet of the solution separator is connected with the refrigerant condenser inlet of the refrigerant condenser; the refrigerant condenser outlet of the refrigerant condenser is connected with the refrigerant separator inlet of the refrigerant separator; the refrigerant reservoir liquid inlet, the refrigerant reservoir liquid outlet and the refrigerant reservoir gas outlet of the refrigerant reservoir are respectively connected with the refrigerant separator liquid outlet of the refrigerant separator, the evaporator liquid inlet of the evaporator and the refrigerant separator gas inlet of the refrigerant separator; the absorber gas inlet of the absorber is respectively connected with the solution reservoir gas outlet of the solution reservoir and the evaporator gas outlet of the evaporator; the solution heat exchanger first inlet, the solution heat exchanger first outlet, the solution heat exchanger second inlet and the solution heat exchanger second outlet of the solution heat exchanger are respectively connected with the absorber liquid outlet, the solution reservoir inlet of the solution reservoir, the solution separator liquid outlet of the solution separator and the absorber liquid inlet of the absorber;

[0010] The diffusion agent generation module comprises a diffusion agent condenser, a first diffusion agent reservoir, a second diffusion agent reservoir, a third diffusion agent reservoir, a diffusion agent evaporator, a first stop valve, a second stop valve, a third stop valve and a fourth stop valve.

[0011] The diffusion agent condenser outlet of the diffusion agent condenser is connected with the diffusion agent reservoir inlet of the first diffusion agent reservoir; the diffusion agent reservoir gas outlet of the first diffusion agent reservoir is connected with the diffusion agent condenser inlet of the diffusion agent condenser; the diffusion agent reservoir liquid outlet of the first diffusion agent reservoir is connected with the diffusion agent reservoir inlet of the second diffusion agent reservoir through the second stop valve; the diffusion agent reservoir liquid outlet of the second diffusion agent reservoir is connected with the diffusion agent reservoir inlet of the third diffusion agent reservoir through the fourth stop valve, and the diffusion agent reservoir liquid outlet of the third diffusion agent reservoir is connected with the diffusion agent evaporator inlet of the diffusion agent evaporator;

[0012] The ejector gas inlets of the ejector are respectively connected with the diffusion agent reservoir gas outlets of the first diffusion agent reservoir through the first stop valve, with the diffusion agent reservoir gas outlets of the second diffusion agent reservoir through the second stop valve, with the diffusion agent reservoir gas outlets of the third diffusion agent reservoir, and with the diffusion agent evaporator outlet of the diffusion agent evaporator.

[0013] Preferably, the solution separator is lower than the jet generator, the refrigerant separator is lower than the refrigerant condenser, the refrigerant reservoir is lower than the refrigerant separator, the evaporator is lower than the refrigerant reservoir and the absorber; the absorber inlet of the absorber is lower than the solution separator outlet of the solution separator, the solution heat exchanger is lower than the absorber, the solution reservoir is lower than the solution heat exchanger.

[0014] The first diffuser reservoir is lower than the diffuser condenser, the second diffuser reservoir is lower than the first diffuser reservoir, the third diffuser reservoir is lower than the second diffuser reservoir, and the diffuser evaporator is lower than the third diffuser reservoir.

[0015] Preferably, the refrigerant in the refrigerant reservoir is water.

[0016] Preferably, the absorbent in the solution reservoir is lithium bromide.

[0017] Preferably, the diffuser in the first diffuser reservoir, the second diffuser reservoir and the third diffuser reservoir is cyclopentane.

[0018] Preferably, the diffuser jet booster module has two working modes:

[0019] Liquid storage mode: the first stop valve and the second stop valve are opened, and the third stop valve and the fourth stop valve are closed.

[0020] Liquid return mode: the third stop valve and the fourth stop valve are opened, and the first stop valve and the second stop valve are closed.

[0021] Preferably, three diffuser supplies are used in the heat transformer to avoid the influence of a large amount of condensed diffuser liquid at a lower temperature entering the generator on the generation of the diffuser. The mixed gas composed of the diffuser and the refrigerant gas is fractionally condensed at different temperature levels.

[0022] Compared with the prior art, the present application has the following advantages:

[0023] 1. Simplifies the generation process of the diffuser, avoids the influence of multiple parameters under complex processes, and reduces the input of heat;

[0024] 2. The heat-driven ejector is used to pump the absorbent and the refrigerant at the same time, which can completely save electric energy;

[0025] 3. The system structure is simple and has no moving parts, which completely solves the corrosion problem of the solution pump at high temperature and improves the reliability of the system operation.

[0026] Based on the above reasons, the present application can be widely promoted in the field of absorption heat transformer and the like. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below are only some embodiments of the present application, and the other drawings can also be obtained by those skilled in the art without any creative effort based on these drawings.

[0028] Fig. 1 For the structure schematic diagram of a jet-driven diffusion absorption heat transformer based on gravity liquid supply in the specific embodiment of the present application.

[0029] Fig. 2 For the structure schematic diagram of a jet generator in the specific embodiment of the present application. DETAILED DESCRIPTION

[0030] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative effort belong to the scope of protection of the present application.

[0032] It should be noted that the terms used herein are only for describing the specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.

[0033] The foregoing is considered as illustrative only of the principles of the application. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the application to the exact construction and practice described. Accordingly, all such variations are intended to be included within the scope of the present application as defined in the following claims, along with full equivalents thereof.

[0034] In the description of the present application, it is to be understood that the orientation terms such as "front", "back", "up", "down", "left", "right", "transverse", "vertical", "horizontal", "top", "bottom", etc. indicate the orientation or positional relationship shown in the drawings, which are merely for the convenience of describing and simplifying the present application, and do not indicate or imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application. The orientation terms "inner", "outer" refer to the inner and outer relative to the contour of the components themselves.

[0035] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper", etc. can be used herein to describe the spatial positional relationship of one device or feature with respect to other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the devices described in the drawings. For example, if the devices in the drawings are inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0036] In addition, it should be noted that the use of the terms "first", "second", etc. to define parts of components is merely for the convenience of distinguishing the corresponding parts of components, and the above terms have no special meaning unless otherwise stated, and therefore cannot be understood as a limitation on the scope of protection of the present application.

[0037] As Figs. 1-2As shown, a gravity liquid supply based ejector driven diffusion-absorption heat transformer, characterized in that the heat transformer comprises a diffusion agent generating module and a refrigerant generating absorption module;

[0038] The refrigerant generating absorption module comprises an ejector generator 1, a solution separator 2, a refrigerant condenser 3, a refrigerant separator 4, a refrigerant reservoir 5, an evaporator 6, an absorber 7, a solution heat exchanger 8, and a solution reservoir 9.

[0039] The diffusion agent generating module comprises a diffusion agent condenser 10, a first diffusion agent reservoir 11, a second diffusion agent reservoir 12, a third diffusion agent reservoir 13, a diffusion agent evaporator 14, a first stop valve 15, a second stop valve 16, a third stop valve 17, and a fourth stop valve 18.

[0040] The pipeline connection mode is as follows:

[0041] The solution reservoir outlet 9b of the solution reservoir 9 is connected with the ejector generator suction port 1b of the ejector generator 1; the ejector generator injection port 1c of the ejector generator 1 is connected with the solution separator liquid inlet 2a of the solution separator 2; the solution separator gas outlet 2c of the solution separator 2 is connected with the refrigerant condenser inlet 3a of the refrigerant condenser 3; the refrigerant condenser outlet 3b of the refrigerant condenser 3 is connected with the refrigerant separator inlet 4a of the refrigerant separator 4; the refrigerant reservoir liquid inlet 5a, the refrigerant reservoir liquid outlet 5b, and the refrigerant reservoir gas outlet 5c of the refrigerant reservoir 5 are respectively connected with the refrigerant separator liquid outlet 4b of the refrigerant separator 4, the evaporator liquid inlet 6a of the evaporator 6, and the refrigerant separator gas inlet 4d of the refrigerant separator 4; the absorber gas inlet 7a of the absorber 7 is respectively connected with the solution reservoir gas outlet 9c of the solution reservoir 9 and the evaporator gas outlet 6b of the evaporator 6; the solution heat exchanger first inlet 8a, the solution heat exchanger first outlet 8b, the solution heat exchanger second inlet 8c, and the solution heat exchanger second outlet 8d of the solution heat exchanger 8 are respectively connected with the absorber liquid outlet 7c of the absorber 7, the solution reservoir inlet 9a of the solution reservoir 9, the solution separator liquid outlet 2b of the solution separator 2, and the absorber liquid inlet 7b of the absorber 7.

[0042] The diffusant condenser outlet 10b of the diffusant condenser 10 is connected with the diffusant reservoir inlet 11a of the first diffusant reservoir 11; the diffusant reservoir gas outlet 11c of the first diffusant reservoir 11 is connected with the diffusant condenser inlet 10a of the diffusant condenser 10; the diffusant reservoir liquid outlet 11b of the first diffusant reservoir 11 is connected with the diffusant reservoir inlet 12a of the second diffusant reservoir 12 through the second stop valve 16; the diffusant reservoir liquid outlet 12b of the second diffusant reservoir 12 is connected with the diffusant reservoir inlet 13a of the third diffusant reservoir 13 through the fourth stop valve 18, and the diffusant reservoir liquid outlet 13b of the third diffusant reservoir 13 is connected with the diffusant evaporator inlet 14a of the diffusant evaporator 14;

[0043] The jet generator inlet 1a of the jet generator 1 is connected with the diffusant reservoir gas outlet 11c of the first diffusant reservoir 11 through the first stop valve 15, connected with the diffusant reservoir gas outlet 12c of the second diffusant reservoir 12 through the second stop valve 16, connected with the diffusant reservoir gas outlet 13c of the third diffusant reservoir 13, and connected with the diffusant evaporator outlet 14b of the diffusant evaporator 14.

[0044] The positional relationship between the upper and lower thereof is as follows:

[0045] The solution separator 2 is lower than the jet generator 1, the refrigerant separator 4 is lower than the refrigerant condenser 3, the refrigerant reservoir 5 is lower than the refrigerant separator 4, and the evaporator 6 is lower than the refrigerant reservoir 5 and the absorber 7; the absorber liquid inlet 7b of the absorber 7 is lower than the solution separator liquid outlet 2b of the solution separator 2, the solution heat exchanger 8 is lower than the absorber 7, and the solution reservoir 9 is lower than the solution heat exchanger 8.

[0046] The first diffusant reservoir 11 is lower than the diffusant condenser 10, the second diffusant reservoir 12 is lower than the first diffusant reservoir 11, the third diffusant reservoir 13 is lower than the second diffusant reservoir 12, and the diffusant evaporator 14 is lower than the third diffusant reservoir 13.

[0047] The medium used by the heat transformer is as follows:

[0048] The refrigerant in the refrigerant reservoir 5 is one or more of water, alcohol, freon, carbon hydrocarbon, halogenated hydrocarbon or ether. The absorbent in the solution reservoir 9 is one or more of salt, alcohol or ether, organic solution, ketone, amine, aldehyde or ionic liquid. The diffusant in the first diffusant reservoir 11, the second diffusant reservoir 12 and the third diffusant reservoir 13 is one or more of freon, carbon hydrocarbon, halogenated hydrocarbon or ether.

[0049] The component structure of the heat transformer is described as follows:

[0050] The solution separator 2 and the refrigerant separator 4 are used to balance separate the two-phase mixture entering therein, and the gas phase flows out from the top and the liquid phase flows out from the bottom. The refrigerant condenser 4, the evaporator 6, the absorber 7, the solution heat exchanger 8, the diffusant condenser 10 and the diffusant evaporator 14 are all heat exchangers, which can be spray or immersion type, or can be tube-in-tube type or other forms, and the heat exchange tubes can be ordinary tubes or enhanced tubes.

[0051] The heat transformer processes the low-temperature heat source and the medium-temperature heat source to improve the grade and further generate a high-temperature heat source.

[0052] The low-temperature heat source is the environmental heat source at the diffusant condenser 10 and the refrigerant condenser 3, and is used to exchange heat with the refrigerant and the diffusant. After the heat exchange, the temperature at the refrigerant condenser 3 is about 35℃, and the temperature at the diffusant condenser 10 is about 30℃.

[0053] The medium-temperature heat source is used to heat the evaporator 6 and the diffusant evaporator 14 at the evaporator 6 and the diffusant evaporator 14, and the heating temperature is about 90℃.

[0054] The high-temperature heat source is at the absorber 7, and a large amount of heat is released at the absorber 7, and the released heat can reach 120℃. The system of the present application is entirely driven by heat energy, and the grade of the heat energy is improved without consuming any electric energy or mechanical energy. The system has good application prospects in recycling low-temperature heat resources and improving energy utilization.

[0055] In the specific embodiment, water is used as the refrigerant, lithium bromide is used as the absorbent, and cyclopentane is used as the diffusant. The flow directions of water, lithium bromide and cyclopentane in the refrigerant absorption module are as follows:

[0056] In the storage mode, the first and second stop valves 15 and 16 are open, and the third and fourth stop valves 17 and 18 are closed. At this time, the cyclopentane liquid in the third diffuser reservoir 13 enters the diffuser evaporator 14 by gravity and is heated to become high-pressure gas as the working fluid of the jet generator 1. The high-pressure cyclopentane gas in the jet generator 1 induces the lithium bromide aqueous solution from the solution reservoir 9, and the two are mixed in the jet generator 1 to cause a change in the composition of the gas phase, resulting in the chemical potential of the water in the lithium bromide aqueous solution being greater than that in the gas phase. Therefore, the water in the lithium bromide solution diffuses and evaporates into the cyclopentane and mixes with the cyclopentane to form a mixed gas, and the concentration of the lithium bromide solution is increased. Since the water evaporation needs to absorb heat, the process mainly occurs in the mixing section and the diffuser section of the jet generator, so a certain medium-temperature heat needs to be input into the jet generator 1, which is different from the traditional adiabatic ejector. The jet generator also has a heat exchange function, which is equivalent to the combination of a traditional ejector and a generator.

[0057] After the refrigerant water is generated from the lithium bromide solution, the mixed gas of cyclopentane and water is separated from the concentrated lithium bromide solution in the solution separator 2. The mixed gas can flow out of the top of the solution separator 2 to the refrigerant condenser 3. After the mixed gas is cooled to a certain temperature in the refrigerant condenser 3, the water in it condenses and releases low-temperature condensation heat to the environment, while the cyclopentane remains in the gas phase and realizes the separation of cyclopentane and water in the refrigerant separator. Since cyclopentane is insoluble in water, the liquid phase in the refrigerant separator 4 can be considered as pure water, and the gas phase is cyclopentane gas containing a small amount of water vapor. After the cyclopentane is cooled to a certain temperature in the diffuser condenser 10, it is completely condensed into a liquid and flows to the first diffuser reservoir 11 and the second diffuser reservoir 12 for temporary storage by gravity. The liquid water in the refrigerant separator 2 flows to the refrigerant reservoir 5 for temporary storage by gravity, and then enters the evaporator 6 to be heated and evaporated into water vapor.

[0058] The concentrated lithium bromide solution accumulated at the bottom of the solution separator 2 is preheated by the solution heat exchanger 8 and enters the absorber 7 to meet the water vapor from the evaporator 6. However, there is no cyclopentane in the absorber 7, and the gas phase is almost entirely water vapor with a very high chemical potential. The chemical potential of water in the concentrated lithium bromide solution will be less than that of water vapor, and water will be absorbed by the lithium bromide solution under the action of the potential difference, releasing a large amount of high-temperature absorption heat for use. This is the embodiment of the warming function of the system. The diluted lithium bromide solution after absorption is temporarily stored in the solution reservoir 9 and is ready to be injected into the jet generator 1 again.

[0059] The dilute solution in the absorber 7 flows into the solution heat exchanger 8 after heat exchange and cooling, and then enters the solution reservoir; it should be noted that the heat exchange of the solution heat exchanger 8 refers to the heat exchange between the high-temperature dilute solution flowing out of the absorber 7 and the low-temperature concentrated solution flowing out of the solution separator 2.

[0060] The flow direction of cyclopentane in the diffusion agent generating module is as follows:

[0061] The diffusion agent generating module has two working modes:

[0062] In the liquid storage mode, the first stop valve 15 and the second stop valve 16 are opened; the third stop valve 17 and the fourth stop valve 18 are closed. At this time, the cyclopentane liquid stored in the third diffusion agent reservoir 13 enters the diffusion agent evaporator 14 and is heated to become high-pressure gas as the working fluid of the jet generator 1 by relying on gravity.

[0063] In the liquid return mode, only the first stop valve 15 and the second stop valve 16 need to be switched to be closed; the third stop valve 17 and the fourth stop valve 18 are opened. After a short pressure balance, the cyclopentane liquid in the second diffusion agent reservoir 12 flows into the third diffusion agent reservoir 13 under the action of gravity. At this time, the condensed cyclopentane liquid in the diffusion agent condenser 10 is temporarily stored in the first diffusion agent reservoir 11, and the functions of the diffusion agent evaporator 14 and other components are not affected. After the cyclopentane liquid in the second diffusion agent reservoir 12 flows into the third diffusion agent reservoir 13, the third stop valve 17 and the fourth stop valve 18 are closed, and the first stop valve 15 and the second stop valve 16 are opened to restore to the liquid storage mode.

[0064] The present application proposes a jet-driven diffusion-absorption heat transformer cycle based on gravity liquid supply. The diffusion agent is directly generated as high-pressure gas in the diffusion agent evaporator 14 by heating, and the flow of the refrigerant and its solution utilizes the pressurizing pumping principle of the jet generator 1, realizing innovative improvement of the diffusion-absorption heat transformer. Through the change of the phase equilibrium relationship of the mixture of the absorbent, the refrigerant and the diffusion agent at different temperatures and concentrations, different chemical potential differences of the refrigerant in the absorbent solution and the gas phase are created, so that the absorption process temperature is higher than the generation process temperature, and finally the high-temperature heat is obtained. The whole system combines the jet generator 1 with the absorption system organically, and is entirely driven by heat energy, realizing the improvement of heat energy grade without consuming any electric energy or mechanical energy, improving the operation reliability. It has good application prospect in recycling low-temperature heat resources and improving energy utilization rate.

[0065] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions recorded in the above embodiments can be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A gravity-fed jet-driven diffusion-absorption heat transformer, characterized by, The heat transformer comprises a diffusant generating module and a refrigerant generating and absorbing module; The refrigerant generating and absorbing module comprises an ejector generator (1), a solution separator (2), a refrigerant condenser (3), a refrigerant separator (4), a refrigerant reservoir (5), an evaporator (6), an absorber (7), a solution heat exchanger (8), and a solution reservoir (9); The solution reservoir outlet (9b) of the solution reservoir (9) is connected with the ejector generator suction port (1b) of the ejector generator (1); the ejector generator injection port (1c) of the ejector generator (1) is connected with the solution separator liquid inlet (2a) of the solution separator (2); the solution separator gas outlet (2c) of the solution separator (2) is connected with the refrigerant condenser inlet (3a) of the refrigerant condenser (3); the refrigerant condenser outlet (3b) of the refrigerant condenser (3) is connected with the refrigerant separator inlet (4a) of the refrigerant separator (4); the refrigerant reservoir liquid inlet (5a), the refrigerant reservoir liquid outlet (5b) and the refrigerant reservoir gas outlet (5c) of the refrigerant reservoir (5) are respectively connected with the refrigerant separator liquid outlet (4b) of the refrigerant separator (4), the evaporator liquid inlet (6a) of the evaporator (6) and the refrigerant separator gas inlet (4d) of the refrigerant separator (4); the absorber gas inlet (7a) of the absorber (7) is connected with the solution reservoir gas outlet (9c) of the solution reservoir (9) and the evaporator gas outlet (6b) of the evaporator (6); the solution heat exchanger first inlet (8a), the solution heat exchanger first outlet (8b), the solution heat exchanger second inlet (8c) and the solution heat exchanger second outlet (8d) of the solution heat exchanger (8) are respectively connected with the absorber liquid outlet (7c) of the absorber (7), the solution reservoir inlet (9a) of the solution reservoir (9), the solution separator liquid outlet (2b) of the solution separator (2) and the absorber liquid inlet (7b) of the absorber (7); The diffusant generating module comprises a diffusant condenser (10), a first diffusant reservoir (11), a second diffusant reservoir (12), a third diffusant reservoir (13), a diffusant evaporator (14), a first stop valve (15), a second stop valve (16), a third stop valve (17) and a fourth stop valve (18). The diffusant condenser outlet (10b) of the diffusant condenser (10) is connected with the diffusant reservoir inlet (11a) of the first diffusant reservoir (11); the diffusant reservoir gas outlet (11c) of the first diffusant reservoir (11) is connected with the diffusant condenser inlet (10a) of the diffusant condenser (10); the diffusant reservoir liquid outlet (11b) of the first diffusant reservoir (11) is connected with the diffusant reservoir inlet (12a) of the second diffusant reservoir (12) through the second stop valve (16); the diffusant reservoir liquid outlet (12b) of the second diffusant reservoir (12) is connected with the diffusant reservoir inlet (13a) of the third diffusant reservoir (13) through the fourth stop valve (18), and the diffusant reservoir liquid outlet (13b) of the third diffusant reservoir (13) is connected with the diffusant evaporator inlet (14a) of the diffusant evaporator (14); The jet generator inlet (1a) of the jet generator (1) is connected with the diffusant reservoir gas outlet (11c) of the first diffusant reservoir (11) through the first stop valve (15), connected with the diffusant reservoir gas outlet (12c) of the second diffusant reservoir (12) through the second stop valve (16), connected with the diffusant reservoir gas outlet (13c) of the third diffusant reservoir (13), and connected with the diffusant evaporator outlet (14b) of the diffusant evaporator (14).

2. A gravity-fed jet-driven diffusion-absorption heat transformer according to claim 1, wherein, The refrigerant in the refrigerant reservoir (5) is water.

3. A gravity-fed jet-driven absorption heat transformer according to claim 1, wherein, The absorbent in the solution reservoir (9) is lithium bromide.

4. A gravity-fed jet-driven absorption heat transformer according to claim 1, wherein, The diffusant in the first diffusant reservoir (11), the second diffusant reservoir (12) and the third diffusant reservoir (13) is cyclopentane.

5. A gravity-fed jet-driven absorption heat transformer according to claim 1, wherein, The diffusant jet pressurization module has two working modes: Liquid storage mode: the first stop valve (15) and the second stop valve (16) are opened, and the third stop valve (17) and the fourth stop valve (18) are closed; Liquid return mode: the third stop valve (17) and the fourth stop valve (18) are opened, and the first stop valve (15) and the second stop valve (16) are closed.

Images