Double-channel three-medium heat exchanger

Abstract

The invention discloses a double-channel three-medium heat exchanger, which belongs to the technical field of heat exchangers and is characterized in that the heat exchanger is integrally formed by an additive manufacturing process, three baffles are arranged on each of two sides in the heat exchanger, and the baffles comprise a first baffle, a second baffle and a third baffle which are arranged on the same side; the first baffle, the second baffle and the sixth baffle are arranged on one side, the fourth baffle, the fifth baffle and the sixth baffle are arranged on the other side, a first cavity, a second cavity, a third cavity, a fourth cavity, a fifth cavity, a sixth cavity and a seventh cavity are divided among the baffles, multi-stage flow paths are arranged among the cavities, and three fluid medium inlets and outlets are formed. The heat exchange efficiency is high, efficient utilization of heat energy can be achieved, waste gas and waste water heat energy recovery can be achieved, the energy-saving and environment-friendly purposes are achieved, the integrated design based on the additive manufacturing technology is adopted, the structure is compact, the occupied area is small, installation and maintenance are convenient, and the device is suitable for the multiple fields of chemical engineering, petroleum, pharmacy, food and the like. The requirements of different industrial fields can be met.

Description

Technical Field

[0001] The invention relates to the technical field of heat exchangers, and in particular to a double-channel three-medium heat exchanger. Background Art

[0002] Heat exchangers play a key role in the existing HVAC, chemical and other fields. With the rise of energy-saving awareness in recent years, the functional requirements for heat exchangers have continued to increase, making heat exchanger technology receive more and more attention. However, in many occasions, a heat exchanger can only achieve independent heat exchange between two liquids or phase change media and gas media. When three media are required to exchange heat with each other, a dual-channel three-medium heat exchanger is required. The three-medium heat exchanger uses three media for heat exchange, including working medium, heating medium and cooling medium. The principle is to transport the heating medium from the heating system to the three-medium heat exchanger, exchange heat with the working medium through the heat exchanger, and then transport the cooling medium from the cooling system to the heat exchanger to exchange heat with the working medium to achieve the purpose of heating and cooling.

[0003] The three-medium heat exchanger has better thermodynamic properties and higher heat exchange efficiency than traditional heat exchangers, which is more in line with industrial and environmental protection requirements. Specifically, the three-medium heat exchanger can not only realize heat exchange between two media, but also realize heat transfer between three media, which improves energy utilization efficiency and reduces energy consumption and pollution. However, the production, processing, assembly and manufacturing of conventional three-medium heat exchangers are relatively complicated, and the failure probability is high, and the reliability is not high.

[0004] Heat exchange equipment is a production equipment widely used in industrial sectors such as petroleum and chemical industry. Currently, the widely used shell-and-tube heat exchangers, shell-and-tube heat exchangers, plate heat exchangers, etc. can only achieve synchronous heat exchange between two media, but cannot achieve synchronous heat exchange between three heat exchange media, resulting in a narrow application field of heat exchangers. At present, the heat exchanger involving three media can only achieve heat exchange between the first medium and the second medium, and between the second medium and the third medium, but cannot achieve heat exchange between the first medium and the third medium, resulting in the development of its application scenarios being limited. Summary of the invention

[0005] The object of the present invention is to provide a dual-channel three-medium heat exchanger to solve the above-mentioned problem, which can provide three heat exchange media for synchronous heat exchange and has a simple structure and low production cost.

[0006] Technical solution: The present invention provides a dual-channel three-medium heat exchanger, including: a heat exchanger, which is integrally formed by an additive manufacturing process, and has three baffles on both sides of the interior, the baffles include a first baffle, a second baffle, and a third baffle arranged on the same side, and a fourth baffle, a fifth baffle, and a sixth baffle arranged on the other side, and a base is provided under the heat exchanger.

[0007] Furthermore, in the above-mentioned dual-channel three-medium heat exchanger, the first baffle and the outermost end inside the heat exchanger separate a first cavity, the first baffle and the second baffle separate a second cavity, the second baffle and the third baffle separate a third cavity, the fourth baffle and the fifth baffle separate a fourth cavity, the fifth baffle and the sixth baffle separate a fifth cavity, the sixth baffle and the outermost end on the other side of the heat exchanger separate a sixth cavity, and the seventh cavity is between the third baffle and the fourth baffle.

[0008] Furthermore, in the above-mentioned dual-channel three-medium heat exchanger, the outside of the first cavity is connected to an interface Aa, the outside of the sixth cavity is connected to an interface Ba, the side of the second cavity is connected to an interface Ab, the side of the fifth cavity is connected to an interface Bb, and the side of the seventh cavity is provided with an interface Ca and an interface Cb in the same direction; the first cavity and the fourth cavity are connected by a pipeline An, the fourth cavity and the second cavity are connected by a pipeline Am, the sixth cavity and the third cavity are connected by a pipeline Bn, and the third cavity and the fifth cavity are connected by a pipeline Bm.

[0009] Furthermore, in the above-mentioned dual-channel three-medium heat exchanger, the first baffle, the second baffle, the third baffle and the fourth baffle, the fifth baffle, and the sixth baffle are symmetrically arranged.

[0010] Furthermore, in the above-mentioned dual-channel three-medium heat exchanger, the cross-sections of the first cavity and the sixth cavity are both conical structures, and the inner diameter decreases from the inside to the outside, which is used for fluid buffering and diffusion.

[0011] Furthermore, in the above-mentioned dual-channel three-medium heat exchanger, the inner diameter of the heat exchanger is divided into a small and a large part in the middle, the inner diameter is large towards the fourth baffle, and the inner diameter is small towards the third baffle, with a slope transition structure in the middle.

[0012] Furthermore, in the above-mentioned dual-channel three-medium heat exchanger, the pipeline An, the pipeline Am, the pipeline Bn, and the pipeline Bm are each provided with a plurality of pipelines, which are evenly distributed in a circular shape.

[0013] Furthermore, in the above-mentioned dual-channel three-medium heat exchanger, the pipeline An is arranged in a single circular ring shape, the pipeline Am is arranged in a double circular ring shape, and the number of pipelines An is equal to the number of pipelines Am; the pipeline Bn is arranged in a single circular ring shape, the pipeline Bm is arranged in a triple circular ring shape, and the number of pipelines Bn is equal to the number of pipelines Bm.

[0014] Furthermore, in the above-mentioned dual-channel three-medium heat exchanger, the pipeline An, pipeline Am, pipeline Bn, and pipeline Bm are arranged alternately in the radial direction of the cross section of the heat exchanger.

[0015] Furthermore, in the above-mentioned dual-channel three-medium heat exchanger, the interface Aa is connected to fluid medium one and finally flows out from interface Ab, the interface Ba is connected to fluid medium two and finally flows out from interface Bb, and the interface Ca is connected to fluid medium three and finally flows out from interface Cb.

[0016] It can be seen from the above technical scheme that the present invention has the following beneficial effects: a dual-channel three-medium heat exchanger described in the present invention is provided with a three-medium heat exchange structure, and fluid medium one and fluid medium two adopt a multi-stage flow path design. The seventh cavity into which fluid medium three enters adopts a structural design in which the same cavity is divided into large and small double cavity sections. The heat exchange efficiency is high, and efficient utilization of thermal energy can be achieved. Heat energy recovery of waste gas and wastewater can be achieved, and the purpose of energy conservation and environmental protection is achieved. An integrated design based on additive manufacturing technology is adopted, with a compact structure, a small footprint, and easy installation and maintenance. It is suitable for many fields such as chemical, petroleum, pharmaceutical, and food, and can meet the needs of different industrial fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of a double-channel three-medium heat exchanger of the present invention; Figure 2 It is a cross-sectional view of the flow paths of fluid medium 1 and fluid medium 2 of the present invention; Figure 3 It is a cross-sectional view of three flow paths of the fluid medium of the present invention; Figure 4 A schematic diagram of a double-channel three-medium heat exchanger (second form) of the present invention; Figure 5 This is a schematic diagram of a semicircular flow channel of a double-channel three-medium heat exchanger (second form) of the present invention.

[0018] In the figure: heat exchanger 1, first baffle 21, second baffle 22, third baffle 23, fourth baffle 24, fifth baffle 25, sixth baffle 26, first cavity 31, second cavity 32, third cavity 33, fourth cavity 34, fifth cavity 35, sixth cavity 36, seventh cavity 37, interface Aa41, interface Ab42, interface Ba51, interface Bb52, interface Ca61, interface Cb62, pipeline An71, pipeline Am72, pipeline Bn81, pipeline Bm82, base 9, pipeline one 91, pipeline two 92. DETAILED DESCRIPTION

[0019] Example 1 like Figure 1-2A dual-channel three-medium heat exchanger shown includes: a heat exchanger 1, which is integrally formed by an additive manufacturing process, and has three baffles on both sides of the interior, the baffles including a first baffle 21, a second baffle 22, and a third baffle 23 arranged on the same side, and a fourth baffle 24, a fifth baffle 25, and a sixth baffle 26 arranged on the other side, and a base 9 is provided under the heat exchanger 1.

[0020] like Figure 2 A dual-channel three-medium heat exchanger is shown, wherein the first baffle 21 and the outermost end inside the heat exchanger 1 separate a first cavity 31, the first baffle 21 and the second baffle 22 separate a second cavity 32, the second baffle 22 and the third baffle 23 separate a third cavity 33, the fourth baffle 24 and the fifth baffle 25 separate a fourth cavity 34, the fifth baffle 25 and the sixth baffle 26 separate a fifth cavity 35, the sixth baffle 26 and the outermost end on the other side of the inside of the heat exchanger 1 separate a sixth cavity 36, and a seventh cavity 37 is between the third baffle 23 and the fourth baffle 24.

[0021] like Figure 2-3 The double-channel three-medium heat exchanger shown in the figure has an interface Aa41 connected to the outside of the first cavity 31, an interface Ba51 connected to the outside of the sixth cavity 36, an interface Ab42 connected to the side of the second cavity 32, an interface Bb52 connected to the side of the fifth cavity 35, and interfaces Ca61 and Cb62 arranged in the same direction on the side of the seventh cavity 37; a pipeline An71 is connected between the first cavity 31 and the fourth cavity 34, a pipeline Am72 is connected between the fourth cavity 34 and the second cavity 32, a pipeline Bn81 is connected between the sixth cavity 36 and the third cavity 33, and a pipeline Bm82 is connected between the third cavity 33 and the fifth cavity 35. A two-stage flow path design is adopted to achieve a one-way return through the pipeline, thereby enhancing the heat exchange effect.

[0022] In this embodiment, the first baffle 21 , the second baffle 22 , the third baffle 23 and the fourth baffle 24 , the fifth baffle 25 , and the sixth baffle 26 are symmetrically arranged.

[0023] In this embodiment, the cross-sections of the first cavity 31 and the sixth cavity 36 are both conical structures, and the inner diameter decreases from the inside to the outside, which is used for fluid buffering and diffusion.

[0024] In this embodiment, the base 9 is used as a carrier for fixing the heat exchanger 1. The base 9 is provided with fixing threaded holes and has been processed to reduce weight and save materials.

[0025] Example 2 On the basis of Example 1, in this example, Figure 2A double-channel three-medium heat exchanger is shown, wherein the inner diameter of the heat exchanger 1 is divided into a small and a large one from the middle, with the inner diameter being large toward the fourth baffle 24 and small toward the third baffle 23, with an inclined transition structure in the middle. The large and small double cavity segment structure design is adopted to ensure that the fluid medium 3 diffuses in the large cavity segment for heat exchange and then flows into the small cavity segment for heat exchange, thereby enhancing the heat exchange capacity.

[0026] In this embodiment, a plurality of pipelines An71, Am72, Bn81, and Bm82 are provided and are evenly distributed in a circular shape.

[0027] In this embodiment, the pipeline An71 is arranged in a single-layer circular ring shape, the pipeline Am72 is arranged in a double-layer circular ring shape, and the number of pipelines An71 is equal to the number of pipelines Am72; the pipeline Bn81 is arranged in a single-layer circular ring shape, the pipeline Bm82 is arranged in a triple-layer circular ring shape, and the number of pipelines Bn81 is equal to the number of pipelines Bm82.

[0028] like Figure 2 In the double-channel three-medium heat exchanger shown, the pipeline An71, the pipeline Am72, the pipeline Bn81, and the pipeline Bm82 are arranged alternately in the radial direction of the cross section of the heat exchanger 1.

[0029] like Figure 2-3 A dual-channel three-medium heat exchanger is shown, wherein the interface Aa41 allows fluid medium 1 to enter the first cavity 31, enter the fourth cavity 34 through the pipeline An71, and then enter the second cavity 32 through the pipeline Am72, and finally flow out from the interface Ab42; the interface Ba51 allows fluid medium 2 to enter the sixth cavity 36, enter the third cavity 33 through the pipeline Bn81, enter the fifth cavity 35 through the pipeline Bm82, and finally flow out from the interface Bb52; the interface Ca61 allows fluid medium 3 to enter the seventh cavity 37, and finally flow out from the interface Cb62.

[0030] In this embodiment, the fluid medium 1 and the fluid medium 2 both pass through the seventh cavity 37 in the pipeline to fully exchange heat with the fluid medium 3 therein, and the fluid medium 1 and the fluid medium 2 mainly exchange heat in the third cavity 33 and the fourth cavity 34.

[0031] In this embodiment, the pipeline An71, the pipeline Am72, the pipeline Bn81, and the pipeline Bm82 can be arranged to be in direct contact, so as to facilitate sufficient heat exchange between the fluid medium 1 and the fluid medium 2.

[0032] Example 3 On the basis of embodiments 1 and 2, in this embodiment, Figure 4A dual-channel three-medium heat exchanger is shown, wherein the heat exchanger 1 is integrally formed by an additive manufacturing process, and three baffles are arranged on both sides of the interior, the baffles include a first baffle 21, a second baffle 22, and a third baffle 23 arranged on the same side, and a fourth baffle 24, a fifth baffle 25, and a sixth baffle 26 arranged on the other side, and a base 9 is provided under the heat exchanger 1.

[0033] In this embodiment, the first baffle 21 and the outermost end inside the heat exchanger 1 separate a first cavity 31, the first baffle 21 and the second baffle 22 separate a second cavity 32, the second baffle 22 and the third baffle 23 separate a third cavity 33, the fourth baffle 24 and the fifth baffle 25 separate a fourth cavity 34, the fifth baffle 25 and the sixth baffle 26 separate a fifth cavity 35, the sixth baffle 26 and the outermost end on the other side of the heat exchanger 1 separate a sixth cavity 36, and a seventh cavity 37 is between the third baffle 23 and the fourth baffle 24.

[0034] like Figure 4-5 A dual-channel three-medium heat exchanger is shown, wherein a pipeline 91 is arranged between the first cavity 31 and the fourth cavity 34, and between the fourth cavity 34 and the second cavity 32. The pipeline 91 is a semicircular flow channel, including an inner fluid domain and an outer fluid domain, wherein the pipeline 91 is the outer fluid domain between the first cavity 31 and the fourth cavity 34, and the inner fluid domain between the fourth cavity 34 and the second cavity 32; a pipeline 92 is arranged between the sixth cavity 36 and the third cavity 33, and between the third cavity 33 and the fifth cavity 35. The pipeline 92 is a semicircular flow channel, including an inner fluid domain and an outer fluid domain, wherein the pipeline 92 is the outer fluid domain between the sixth cavity 36 and the third cavity 33, and the inner fluid domain between the third cavity 33 and the fifth cavity 35.

[0035] In this embodiment, the interface Aa41 allows fluid medium one to enter the first cavity 31, enter the fourth cavity 34 through the external fluid domain of pipeline one 91, and then enter the second cavity 32 through the internal fluid domain of pipeline one 91, and finally flow out from the interface Ab42; the interface Ba51 allows fluid medium two to enter the sixth cavity 36, enter the third cavity 33 through the external fluid domain of pipeline two 92, enter the fifth cavity 35 through the internal fluid domain of pipeline 92, and finally flow out from the interface Bb52; the interface Ca61 allows fluid medium three to enter the seventh cavity 37, and finally flow out from the interface Cb62.

[0036] In this embodiment, the inner and outer fluid domains of the pipeline 1 91 and the pipeline 2 92 are separated by a central partition, and the fluid medium 1 and the fluid medium 2 both pass through the seventh cavity 37 in the pipeline to fully exchange heat with the fluid medium 3 therein, and the fluid medium 1 and the fluid medium 2 mainly exchange heat in the third cavity 33 and the fourth cavity 34.

[0037] In this embodiment, the pipeline 1 91 and the pipeline 2 92 are each provided with a plurality of pipelines, which are evenly distributed in a circular shape; the pipeline 1 91 and the pipeline 2 92 are alternately arranged in the radial direction of the cross section of the heat exchanger 1 .

[0038] In this embodiment, the pipeline 1 91 and the pipeline 2 92 can be arranged to be in direct contact with each other, so as to facilitate sufficient heat exchange between the fluid medium 1 and the fluid medium 2.

[0039] It should be noted that the above is only a technical solution of the invention and not a limitation. Although the present invention is described in detail with reference to the preferred embodiments, a person skilled in the art should understand that the technical solution of the invention can be modified or replaced by equivalents without departing from the scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A dual-channel three-medium heat exchanger, characterized in that: include: A heat exchanger (1), wherein the heat exchanger (1) is integrally formed by an additive manufacturing process, and three baffles are arranged on both sides of the interior, the baffles comprising a first baffle (21), a second baffle (22), and a third baffle (23) arranged on the same side, and a fourth baffle (24), a fifth baffle (25), and a sixth baffle (26) arranged on the other side; The first baffle (21) and the outermost end of the heat exchanger (1) separate a first cavity (31); the first baffle (21) and the second baffle (22) separate a second cavity (32); the second baffle (22) and the third baffle (23) separate a third cavity (33); the fourth baffle (24) and the fifth baffle (25) separate a fourth cavity (34); the fifth baffle (25) and the sixth baffle (26) separate a fifth cavity (35); the sixth baffle (26) and the outermost end on the other side of the heat exchanger (1) separate a sixth cavity (36); and a seventh cavity (37) is formed between the third baffle (23) and the fourth baffle (24); The first cavity (31) is connected to an interface Aa (41) on the outside, the sixth cavity (36) is connected to an interface Ba (51) on the outside, the second cavity (32) is connected to an interface Ab (42) on the side, the fifth cavity (35) is connected to an interface Bb (52) on the side, and the seventh cavity (37) is provided with an interface Ca (61) and an interface Cb (62) on the side in the same direction; A pipeline An (71) is connected between the first cavity (31) and the fourth cavity (34), a pipeline Am (72) is connected between the fourth cavity (34) and the second cavity (32), a pipeline Bn (81) is connected between the sixth cavity (36) and the third cavity (33), and a pipeline Bm (82) is connected between the third cavity (33) and the fifth cavity (35).

2. A dual-channel three-medium heat exchanger according to claim 1, characterized in that: The first baffle (21), the second baffle (22), the third baffle (23) and the fourth baffle (24), the fifth baffle (25), and the sixth baffle (26) are symmetrically arranged.

3. A dual-channel three-medium heat exchanger according to claim 1, characterized in that: The cross-sections of the first cavity (31) and the sixth cavity (36) are both conical structures, with the inner diameter decreasing from the inside to the outside, and are used for fluid buffering and diffusion.

4. A dual-channel three-medium heat exchanger according to claim 1, characterized in that: A base (9) is provided below the heat exchanger (1).

5. The double-channel three-medium heat exchanger according to claim 1, characterized in that: The inner diameter of the heat exchanger (1) is divided into a small and a large part in the middle, with the inner diameter being large towards the fourth baffle (24) and being small towards the third baffle (23), with an inclined transition structure in the middle.

6. The double-channel three-medium heat exchanger according to claim 1, characterized in that: The pipeline An (71), the pipeline Am (72), the pipeline Bn (81), and the pipeline Bm (82) are each provided with a plurality of pipelines, which are evenly distributed in a circular shape.

7. A dual-channel three-medium heat exchanger according to claim 6, characterized in that: The pipeline An (71) is arranged in a single-layer circular ring shape, and the pipeline Am (72) is arranged in a double-layer circular ring shape, and the number of pipelines An (71) is equal to the number of pipelines Am (72).

8. A dual-channel three-medium heat exchanger according to claim 7, characterized in that: The pipeline Bn (81) is arranged in a single-layer circular ring shape, and the pipeline Bm (82) is arranged in a three-layer circular ring shape, and the number of pipelines Bn (81) is equal to the number of pipelines Bm (82).

9. The double-channel three-medium heat exchanger according to claim 1, characterized in that: The pipeline An (71), the pipeline Am (72), the pipeline Bn (81), and the pipeline Bm (82) are arranged alternately in the radial direction of the cross section of the heat exchanger (1).

10. The double-channel three-medium heat exchanger according to claim 1, characterized in that: The interface Aa (41) is fed with fluid medium one and finally flows out from the interface Ab (42), the interface Ba (51) is fed with fluid medium two and finally flows out from the interface Bb (52), and the interface Ca (61) is fed with fluid medium three and finally flows out from the interface Cb (62).

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