Heat exchange device and absorption unit

Abstract

The utility model discloses a heat exchange device and absorption unit, the first cavity is the fluid's effusion cavity in this application, and the liquid baffle of first baffle surface can enclose at least two not intercommunicating compartments with first baffle, so when the cylinder body is inclined or shakes, under the obstruction of liquid baffle, the solution or cold agent of compartment fluid etc.

Description

Technical Field

[0001] This utility model relates to the field of heat recovery technology, specifically to a heat exchange device and an absorption unit. Background Technology

[0002] Absorption heat exchange units consist of an evaporator, absorber, generator, and condenser. Currently, there are two main arrangements of heat exchange tubes inside the evaporator, absorber, generator, and condenser: horizontal falling film arrangement and vertical falling film arrangement. Due to the large footprint and other drawbacks of the horizontal falling film arrangement, the vertical falling film arrangement is increasingly widely used in environments with limited space.

[0003] The vertical falling film arrangement consists of a liquid accumulation layer and several vertical tubes. Under gravity, the liquid in the accumulation layer can flow along the surface of the vertical tubes, thus achieving heat exchange with the fluid inside the vertical tubes. When the vertical falling film arrangement is applied to a swaying environment, the fluid layer in the accumulation layer will also experience swaying, and the liquid level in the accumulation layer corresponding to the vertical tubes will also change. To achieve uniform liquid distribution on the surface of the vertical tubes, a predetermined liquid level is required above each vertical tube. When the fluid in the accumulation layer sways, the liquid level above some vertical tubes may become too low, failing to meet the liquid distribution requirements. This results in uneven liquid distribution on the surface of the vertical tubes or even no fluid on the surface of the vertical tubes, severely affecting heat exchange efficiency.

[0004] Therefore, how to overcome the above-mentioned defects as much as possible is a technical problem that those skilled in the art have been trying to solve. Utility Model Content

[0005] The purpose of this application is to provide a heat exchange device that can improve the uniformity of liquid distribution on the surface of a vertical pipe, thereby improving heat exchange efficiency. Another purpose of this application is to provide an absorption chiller unit that includes the above-mentioned heat exchange device.

[0006] This application provides a heat exchange device, characterized in that it includes at least one heat exchange unit, the heat exchange unit comprising:

[0007] The cylinder and the first partition plate, wherein the interior of the cylinder includes a first cavity and a second cavity, the first cavity and the second cavity are separated by the first partition plate and are arranged in a vertical direction, the first cavity has a fluid inlet and the second cavity has a fluid outlet;

[0008] At least one baffle is located in the first cavity, one side of the baffle is connected to the first partition, and the other side extends vertically to a predetermined height; all the baffles form at least two compartments on one side of the first partition;

[0009] A plurality of vertical tubes are provided, and at least two of the compartments are provided with the vertical tubes. Each of the vertical tubes passes through the first partition, and a portion of the vertical tube is located in the first cavity and a portion is located in the second cavity.

[0010] A fluid distributor is used to direct fluid from the first chamber to the surface of the vertical tube located in the second chamber.

[0011] In this application, the first chamber is a fluid accumulation chamber, and the baffle plate on the surface of the first partition can form at least two non-communicating compartments with the first partition. In this way, when the cylinder is tilted or shaken, the solution or refrigerant in the compartment will not all move to the other compartment due to the obstruction of the baffle plate. This greatly reduces the occurrence of no liquid level above some distributors and allows the solution or refrigerant to enter the second chamber through all distributors, thereby improving the heat exchange efficiency of the heat exchange device.

[0012] In one example, a spray assembly is also included for conveying a fluid medium outside the cylinder to each of the compartments. The spray assembly includes at least one spray pipe with a plurality of nozzles. At least one spray pipe is supported on the baffle plate, and the fluid in the spray pipe is conveyed to at least one of the compartments through the nozzles.

[0013] In one example, at least one of the baffle plates has its two ends in contact with the inner wall of the cylinder.

[0014] In one example, the liquid baffles are arranged in parallel, or at least two of the liquid baffles are arranged in an intersecting manner.

[0015] In one example, the first cavity is further provided with a buffer plate, which is located above the first partition. The buffer plate divides the first cavity into a first sub-cavity and a second sub-cavity. The second sub-cavity is located between the first partition and the buffer plate. The fluid inlet is provided on the cavity wall of the cylinder that forms the first sub-cavity. The buffer plate is provided with sieve holes, and the fluid in the first sub-cavity flows to the second sub-cavity through the sieve holes.

[0016] In one example, a second partition is also included, and the interior of the cylinder also includes a third cavity. The third cavity is located on the side of the first cavity away from the second cavity. The third cavity and the first cavity are separated by the second partition. The second partition is provided with through holes corresponding to the vertical pipes. The upper end of the vertical pipe is located inside the through hole or extends through the through hole. A heat exchange medium inlet is provided on the cavity wall of the cylinder that surrounds the third cavity.

[0017] In one example, a third partition is also included, and the interior of the cylinder also includes a fourth cavity. The fourth cavity is located on the side of the second cavity away from the first cavity. The fourth cavity and the second cavity are separated by the third partition. The third partition is provided with through holes corresponding to the vertical tubes. The lower end of the vertical tube is located inside the through hole or extends out of the through hole. A heat exchange medium outlet is provided on the cavity wall of the cylinder surrounding the fourth cavity.

[0018] In one example, at least two second extension chambers are provided at the lower end of the outer wall of each of the cylinders, all of the second extension chambers are arranged circumferentially along the cylinder, and each of the second extension chambers is provided with the fluid outlet.

[0019] In one example, an intermediate cylinder is also included, and the number of heat exchange units is two. The cylinders of the two heat exchange units are arranged in a horizontal direction, and the second cavities of the two heat exchange units are connected through the intermediate cylinder.

[0020] This application also provides an absorption chiller unit, including an absorber, an evaporator, a generator, and a condenser, wherein at least one of the absorber, evaporator, generator, and condenser includes the heat exchange device described in any of the above embodiments.

[0021] In one example, the heat exchange device includes a first heat exchange device and a second heat exchange device. Both the first and second heat exchange devices include two heat exchange units, and the second cavities of the cylinders of the two heat exchange units are interconnected. One of the two heat exchange units of the first heat exchange device serves as the evaporator and the other as the absorber. One of the two heat exchange units of the second heat exchange device serves as the generator and the other as the condenser.

[0022] In one example, the first heat exchange device and the second heat exchange device are arranged vertically.

[0023] Alternatively, the first heat exchange device and the second heat exchange device may be arranged horizontally.

[0024] The absorption chiller provided in this application includes the aforementioned heat exchange device, and therefore the absorption chiller also has the aforementioned technical effects of the heat exchange device. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of an absorption chiller unit provided in one embodiment of this application;

[0026] Figure 2 This is a partial structural schematic diagram of a heat exchange device provided in an embodiment of this application;

[0027] Figure 3 for Figure 2 Top view of the heat exchange device shown;

[0028] Figure 4 for Figure 3 Sectional view A1-A1;

[0029] Figure 5 for Figure 2 A schematic diagram of the structure of a heat exchange unit;

[0030] Figure 6 This is a schematic diagram of the fluid in the first cavity when the cylinder is in an inclined state in one embodiment of this application.

[0031] in, Figures 1 to 6 The annotations in the accompanying drawings are explained as follows:

[0032] 100 Heat exchange unit; 1 Shell; 11 First extension chamber; 12 Second extension chamber; 121 Fluid outlet; 13 Mounting bracket; 2 First partition; 21 Through hole; 3 Baffle; 4 Vertical pipe; 5 Liquid distributor; 61 Spray pipe; 611 Nozzle; 7 Second partition; 71 Through hole; 8 Third partition; 81 Through hole; 9 Intermediate cylinder; 10 Baffle assembly;

[0033] 101 First cavity; 102 Second cavity; 200 Fluid. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solutions of the embodiments of this application, the embodiments of this application will be further described in detail below with reference to the accompanying drawings and specific examples.

[0035] This application provides a heat exchange device that can improve heat exchange efficiency. This heat exchange device can be applied to heat exchange between any two liquids. This application takes the application of the heat exchange device in an absorption chiller as an example to introduce the technical solution and technical effects.

[0036] Please refer to Figures 1 to 6 , Figure 1 This is a schematic diagram of the structure of an absorption chiller unit provided in one embodiment of this application; Figure 2 This is a partial structural schematic diagram of a heat exchange device provided in an embodiment of this application; Figure 3 for Figure 2 Top view of the heat exchange device shown; Figure 4 for Figure 3 Sectional view A1-A1; Figure 5 for Figure 2 A schematic diagram of the structure of a heat exchange unit; Figure 6 This is a schematic diagram of the fluid in the first cavity when the cylinder is in an inclined state in one embodiment of this application.

[0037] This application provides an absorption chiller unit, which can be either an absorption chiller or an absorption heat pump. The absorption chiller unit includes components such as an evaporator 1-4, an absorber 1-3, a condenser 1-2, a generator 1-1, a solution pump 1-8, a refrigerant pump 1-9, a solution tank 1-6, a refrigerant tank 1-7, and a solution heat exchanger 1-5.

[0038] The refrigeration principle of the absorption chiller is as follows: chilled water B flows through evaporator 1-4 and its heat is absorbed by the unit; the driving heat source A flows through generator 1-1 and its heat is also absorbed by the unit; cooling water C flows through absorber 1-3 and condenser 1-2, carrying away the heat inside the unit, and flows out after being heated.

[0039] The heating principle of the absorption chiller is as follows: heat source water B flows through evaporator 1-4 and its heat is absorbed by the unit; driving heat source A flows through generator 1-1 and its heat is also absorbed by the unit; hot water C flows through absorber 1-3 and condenser 1-2, carrying away the heat inside the unit, and flows out after being heated.

[0040] The internal circulation principle is as follows: Refrigerant flows out from the refrigerant tank 1-7 at the bottom of evaporator 1-4 and is pumped into evaporator 1-4 by refrigerant pump 1-9, where it is sprayed onto the surface of the heat transfer tubes for evaporation. During evaporation in evaporator 1-4, the refrigerant continuously absorbs heat from the cold water or heat source water flowing through evaporator 1-4, thus cooling it down. Dilute solution flows out from the solution tank 1-6 at the bottom of absorber 1-3 and is pumped by solution pump 1-8 through solution heat exchanger 1-5, where it exchanges heat with the high-temperature concentrated solution flowing out from the bottom of generator 1-1. The heated dilute solution then enters generator 1-1 for concentration. In generator 1-1, the dilute solution is heated and concentrated by a driving heat source. The refrigerant vapor generated from the dilute solution carries away the heat from the driving heat source and enters condenser 1-2 for condensation, releasing heat to heat the cooling water or hot water flowing through condenser 1-2. The concentrated solution flows out from the generator 1-1, passes through the solution heat exchanger 1-5 to cool down, and then enters the absorber 1-3 to absorb the refrigerant vapor and become a dilute solution. The heat released during the absorption process heats the cooling water or hot water flowing through the absorber 1-3.

[0041] This application provides a heat exchange device, which can be at least one of an absorber 1-3, an evaporator 1-4, a generator 1-1, or a condenser 1-2. (See attached document.) Figure 1 The absorber 1-3, evaporator 1-4, generator 1-1, or condenser 1-2 are shown to use the heat exchange device provided in this application. Of course, those skilled in the art should understand that one, two, or three of the absorber 1-3, evaporator 1-4, generator 1-1, or condenser 1-2 may use the heat exchange device provided in this application.

[0042] In this embodiment of the application, the heat exchange device includes at least one heat exchange unit 100, which includes a cylinder 1, a first partition 2, a baffle 3, a vertical pipe 4, and a liquid distribution device.

[0043] In this embodiment of the application, the interior of the cylinder 1 includes a first cavity 101 and a second cavity 102. The first cavity 101 and the second cavity 102 are separated by a first partition 2 and are arranged vertically. Figure 4 For example, the first cavity 101 is located above the second cavity 102. The first cavity 101 has a fluid inlet, and the second cavity 102 has a fluid outlet 121.

[0044] The number of liquid-repellent baffles 3 is at least one, and each liquid-repellent baffle 3 is located in the first cavity 101. One side of each liquid-repellent baffle 3 is connected to the first partition 2, and the other side extends vertically to a predetermined height. All liquid-repellent baffles 3 form at least two compartments on one side of the first partition 2. That is, the liquid-repellent baffles 3 and the first partition 2 can form several compartments. The shapes of each liquid-repellent baffle 3 can be the same or different. Each liquid-repellent baffle 3 can extend in the same direction for easy arrangement. Of course, at least two of the liquid-repellent baffles 3 can be arranged at an angle, that is, at least two liquid-repellent baffles 3 can be intersected, so that the size and shape of the compartments can be reasonably set.

[0045] In this embodiment, the number of vertical tubes 4 is at least one, and usually several, to more clearly illustrate the structural features. Figure 4 Only a portion of the vertical pipe 4 is shown. In this embodiment, at least two compartments are equipped with vertical pipes 4. Typically, to achieve maximum heat exchange efficiency, each compartment is equipped with at least one vertical pipe 4. Each vertical pipe 4 penetrates the first partition 2, with a portion of the vertical pipe 4 located in the first cavity 101 and a portion located in the second cavity 102. That is, the first partition 2 is provided with a through hole 21, a portion of the vertical pipe 4 passes through the through hole 21, and the liquid distributor 5 can also be installed in the through hole 21.

[0046] In this embodiment, the liquid distributor 5 is used to guide the fluid in the first chamber 101 to the surface of the vertical tube 4 in the second chamber 102 to form a liquid film. Taking the cylinder 1 as the absorber 1-3 as an example, the concentrated solution enters the first chamber 101 from the fluid inlet. Under the action of the liquid distributor 5, the concentrated solution can flow along the outer wall of the vertical tube 4 (usually forming a liquid film). The concentrated solution on the outer wall of the vertical tube 4 in the second chamber 102 absorbs vapor, is diluted and releases heat in the second chamber 102, and then flows out of the cylinder 1 from the fluid outlet 121. The liquid flowing inside the vertical tube 4 of the absorber 1-3 is a refrigerant. Taking the cylinder 1 as the evaporator 1-4 as an example, the refrigerant enters the first chamber 101 from the fluid inlet. The refrigerant is heated and evaporated into vapor by the medium inside the vertical tube 4 in the second chamber 102. The specific structure of the liquid distributor 5 can be found in the prior art.

[0047] In this application, the first chamber 101 is a fluid accumulation chamber. The baffle plate 3 can form at least two non-communicating compartments with the first partition plate 2. In this way, when the cylinder 1 is tilted or shaken, the solution or refrigerant fluid 200 in the compartment will not all move to the other compartment due to the obstruction of the baffle plate 3. This greatly reduces the occurrence of no liquid level above some liquid distributors 5 and makes it possible for the solution or refrigerant in all compartments to enter the second chamber 102 through all liquid distributors 5, thereby improving the heat exchange efficiency of the heat exchange device.

[0048] The heat exchange device provided in this application also includes a spray assembly for conveying the fluid medium outside the cylinder 1 to each compartment. The spray assembly includes at least one spray pipe 61, which is provided with a plurality of nozzles 611. At least one spray pipe 61 is supported on a baffle plate 3, and the fluid in the spray pipe 61 is conveyed to at least one compartment through the nozzles 611. For example, in one embodiment, one spray pipe 61 can fill at least two compartments below it with fluid.

[0049] In this embodiment, the baffle plate 3 can serve as a support component for the spray pipe 61, eliminating the need for additional auxiliary components to fix the spray pipe 61.

[0050] In this embodiment, at least one baffle plate 3 has its two ends in contact with the interior of the cylinder 1. In this way, the baffle plate 3, the first partition plate 2, and the cylinder 1 can form a completely isolated compartment, further preventing the fluid inside each compartment from flowing into each other when the cylinder 1 is tilted or shaken, thereby ensuring the liquid level inside each compartment and improving the heat exchange efficiency.

[0051] In one example, a first extension chamber 11 is provided on the outside of the cylinder 1, and the liquid inlet of each spray pipe 61 is connected to the inner cavity of the first extension chamber 11. The fluid inlet is provided in the first extension chamber 11, which facilitates the installation of the spray pipe 61.

[0052] Similarly, a second extension chamber 12 can be provided at the lower end of the cylinder 1. The second cavity 102 is connected to the inner cavity of the second extension chamber 12, and the fluid outlet 121 is provided in the second extension chamber 12. There are at least two second extension chambers 12. The figure shows that there are two second extension chambers 12, which are arranged radially opposite each other. This can help to ensure uniform liquid discharge when the cylinder 1 is tilted or shaken.

[0053] In addition to using the spray pipe 61 to fill the compartment with liquid, this application also provides a method for filling the compartment with liquid.

[0054] In this embodiment of the application, the first cavity 101 is further provided with a buffer plate (not shown in the figures). The buffer plate is located above the first partition 2 and divides the first cavity 101 into a first sub-cavity and a second sub-cavity (not shown in the figures). The second sub-cavity is located between the first partition 2 and the buffer plate. The fluid inlet is provided on the cavity wall of the cylinder 1 that forms the first sub-cavity. The buffer plate is provided with a sieve hole, and the fluid in the first sub-cavity flows to the second sub-cavity through the sieve hole.

[0055] This embodiment has a relatively small number of parts and is easy to assemble.

[0056] In this embodiment, the heat exchange device further includes a second partition 7, and the interior of the cylinder 1 also includes a third cavity (not shown). Since the accompanying drawings only show a portion of the structure of the cylinder 1, the third cavity and the fourth cavity mentioned later are not shown. However, this does not prevent those skilled in the art from understanding the technical solution. The third and fourth cavities are mainly for the supply and outflow of the heat exchange medium inside the vertical tube 4. The third cavity is located on the side of the first cavity 101 opposite to the second cavity 102. The third cavity and the first cavity 101 are separated by the second partition 7. The second partition 7 is provided with through holes 71 corresponding to the vertical tubes 4. The upper end of the vertical tube 4 is located inside or extends through the through holes 71. A heat exchange medium inlet is provided on the cavity wall of the cylinder 1 that surrounds the third cavity.

[0057] The external heat exchange medium enters the third chamber and then flows into the interior of the vertical pipe 4, making the structure simple.

[0058] In this embodiment of the application, the heat exchange device may further include a third partition 8, and the interior of the cylinder 1 may also include a fourth cavity (not shown in the figure). The fourth cavity is located on the side of the second cavity 102 away from the first cavity 101. The fourth cavity and the second cavity 102 are separated by the third partition 8. The third partition 8 is provided with through holes 81 corresponding to the vertical pipes 4. The lower end of the vertical pipes 4 is located inside the through holes 81 or passes through the through holes 81. The cavity wall of the cylinder 1 that forms the fourth cavity is provided with a heat exchange medium outlet.

[0059] Although Figures 2 to 6 The third and fourth cavities are not shown, but this does not prevent those skilled in the art from understanding and implementing the embodiments of this application.

[0060] An installation frame 13 can also be installed on the outside of the cylinder 1 to facilitate installation in the external environment or to facilitate hoisting.

[0061] In this embodiment, there are two heat exchange units 100, and the cylinders 1 of the two heat exchange units 100 are arranged horizontally, with their second cavities 102 connected. For example, one of the two heat exchange units 100 can function as an evaporator and the other as an absorber, or one of the two heat exchange units 100 can function as a generator and the other as a condenser. The two cylinders 1 can be directly connected or connected through an intermediate cylinder 9. Figures 2 to 4 An example is shown where two cylinders 1 are connected by an intermediate cylinder 9, which is a simple connection method.

[0062] In this embodiment, a liquid-blocking component 10 that allows steam to pass through can be provided inside the cylinder 9, or the liquid-blocking component 10 may not be provided.

[0063] In this embodiment, the first partition 2 of the cylinder 1 of the two heat exchange units 100 is an integral structure, resulting in fewer overall components in the heat exchange device. Alternatively, the first partition 2 of the cylinder 1 of the two heat exchange units 100 can also be a separate structure, which facilitates processing and manufacturing.

[0064] In this embodiment of the application, the first partition 2 of the cylinder 1 of the two heat exchange units 100 is located on the same horizontal plane. Of course, the first partition 2 of the cylinder 1 of the two heat exchange units 100 may not be located on the same horizontal plane.

[0065] Appendix Figure 1 The solution tanks 1-6 and refrigerant tanks 1-7 can be integrated inside the corresponding cylinder 1.

[0066] The absorption chiller unit in this embodiment includes a first heat exchange device and a second heat exchange device. Both the first and second heat exchange devices include two heat exchange units 100, and the second chambers 102 of the cylinders 1 of the two heat exchange units 100 are interconnected. One of the two heat exchange units 100 of the first heat exchange device serves as an evaporator 1-4, and the other as an absorber 1-3. One of the two heat exchange units of the second heat exchange device serves as a generator 1-1, and the other as a condenser 1-2. This absorption chiller unit has a compact structure and a small footprint.

[0067] In one example, the first heat exchanger and the second heat exchanger are arranged vertically, which saves horizontal space.

[0068] In another embodiment, the first heat exchange device and the second heat exchange device can also be arranged horizontally for easy installation.

[0069] In this embodiment of the application, the absorber 1-3, evaporator 1-4, generator 1-1 or condenser 1-2 may also be a separate heat exchange device, and there is a heat exchange unit 100 in the heat exchange device.

[0070] For other structures of absorption chillers, please refer to existing technologies; they will not be elaborated upon in this article.

[0071] The absorption chiller provided in this application includes the aforementioned heat exchange device, and therefore the absorption chiller also has the aforementioned technical effects of the heat exchange device.

[0072] In the description of embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0073] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A heat exchange device, characterized in that, Includes at least one heat exchange unit (100), said heat exchange unit (100) comprising: The cylinder (1) and the first partition (2) are provided. The interior of the cylinder (1) includes a first cavity (101) and a second cavity (102). The first cavity (101) and the second cavity (102) are separated by the first partition (2) and arranged in a vertical direction. The first cavity (101) has a fluid inlet and the second cavity (102) has a fluid outlet (121). At least one baffle plate (3) is located in the first cavity (101). One side of the baffle plate (3) is connected to the first partition plate (2), and the other side extends vertically to a predetermined height. All the baffle plates (3) form at least two compartments on one side of the first partition plate (2). A plurality of vertical tubes (4), at least two of the compartments are provided with the vertical tubes (4), each of the vertical tubes (4) penetrates the first partition (2), and the vertical tubes (4) are partially located in the first cavity (101) and partially located in the second cavity (102); A fluid distributor (5) is used to direct fluid from the first chamber (101) to the surface of the vertical pipe (4) located in the second chamber (102).

2. The heat exchange device according to claim 1, characterized in that, It also includes a spray assembly for conveying the fluid medium outside the cylinder (1) to each of the compartments. The spray assembly includes at least one spray pipe (61) with a plurality of nozzles. At least one spray pipe (61) is supported on the baffle plate (3). The fluid in the spray pipe (61) is conveyed to at least one of the compartments through the nozzles.

3. The heat exchange device according to claim 1, characterized in that, At least one of the baffles (3) has its two ends in contact with the inner wall of the cylinder (1).

4. The heat exchange device according to claim 3, characterized in that, Each of the liquid baffles (3) is arranged in parallel, or at least two of the liquid baffles (3) are arranged in a cross pattern.

5. The heat exchange device according to claim 1, characterized in that, The first cavity (101) is also provided with a buffer plate, which is located above the first partition (2). The buffer plate divides the first cavity (101) into a first sub-cavity and a second sub-cavity. The second sub-cavity is located between the first partition (2) and the buffer plate. The fluid inlet is provided on the cavity wall of the cylinder (1) that forms the first sub-cavity. The buffer plate is provided with a sieve hole, and the fluid in the first sub-cavity flows to the second sub-cavity through the sieve hole.

6. The heat exchange device according to claim 1, characterized in that, It also includes a second partition (7), and the interior of the cylinder (1) also includes a third cavity. The third cavity is located on the side of the first cavity (101) away from the second cavity (102). The third cavity and the first cavity (101) are separated by the second partition (7). The second partition (7) is provided with through holes corresponding to the vertical pipe (4). The upper end of the vertical pipe (4) is located inside the through hole or passes through the through hole. The cavity wall of the cylinder (1) surrounding the third cavity is provided with a heat exchange medium inlet. Or / and, also includes a third partition (8), the interior of the cylinder (1) also includes a fourth cavity, the fourth cavity is located on the side of the second cavity (102) away from the first cavity (101), the fourth cavity and the second cavity (102) are separated by the third partition (8), the third partition (8) is provided with through holes corresponding to the vertical tube (4), the lower end of the vertical tube (4) is located inside the through hole or passes through the through hole, the cavity wall of the cylinder (1) surrounding the fourth cavity is provided with a heat exchange medium outlet; Alternatively / and, at least two second extension chambers (12) are provided at the lower end of the outer wall of each of the cylinders (1), all of the second extension chambers are arranged along the circumference of the cylinder (1), and each of the second extension chambers (12) is provided with the fluid outlet (121).

7. The heat exchange device according to any one of claims 1 to 6, characterized in that, It also includes an intermediate cylinder (9), and there are two heat exchange units (100). The cylinders (1) of the two heat exchange units (100) are arranged in a horizontal direction, and the second chambers (102) of the two heat exchange units (100) are connected through the intermediate cylinder (9).

8. An absorption chiller unit, characterized in that, It includes an absorber, an evaporator, a generator, and a condenser, wherein at least one of the absorber, evaporator, generator, and condenser includes the heat exchange device according to any one of claims 1 to 7.

9. The absorption chiller unit according to claim 8, characterized in that, The heat exchange device includes a first heat exchange device and a second heat exchange device. Both the first heat exchange device and the second heat exchange device include two heat exchange units (100). The second chamber (102) of the cylinder (1) of the two heat exchange units (100) are interconnected. One of the two heat exchange units (100) of the first heat exchange device serves as the evaporator (1-4) and the other serves as the absorber (1-3). One of the two heat exchange units (100) of the second heat exchange device serves as the generator and the other serves as the condenser.

10. The absorption chiller unit according to claim 9, characterized in that, The first heat exchange device and the second heat exchange device are arranged vertically. Alternatively, the first heat exchange device and the second heat exchange device may be arranged horizontally.

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