A dual-channel three-medium heat exchanger

Abstract

The present invention discloses a dual-channel, three-medium heat exchanger, belonging to the field of heat exchanger technology. The heat exchanger comprises: the heat exchanger is integrally formed using an additive manufacturing process, and three baffles are provided on each side of the interior. The baffles include a first baffle, a second baffle, and a third baffle provided on the same side, and a fourth baffle, a fifth baffle, and a sixth baffle provided on the other side. The baffles separate a first cavity, a second cavity, a third cavity, a fourth cavity, a fifth cavity, a sixth cavity, and a seventh cavity. A multi-stage flow path is provided between the cavities, and inlets and outlets for three types of fluid media are provided. The present invention has high heat exchange efficiency, can achieve efficient utilization of thermal energy, can realize waste gas and wastewater heat energy recovery, and achieve the purpose of energy conservation and environmental protection. The invention adopts an integrated design based on additive manufacturing technology, has a compact structure, a small footprint, and is easy to install and maintain. It is suitable for many fields such as chemical, petroleum, pharmaceutical, and food, and can meet the needs of different industrial fields.

Description

Technical Field

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

[0002] Heat exchangers play a key role in existing HVAC, chemical and other fields. With the rise of energy-saving awareness in recent years, the functional requirements of heat exchangers have continued to increase, making heat exchanger technology receive more and more attention. However, in many occasions now, a heat exchanger can only achieve independent heat exchange between two liquids or phase change media and gas media. When heat exchange between three media is required, a dual-channel three-medium heat exchanger is needed. The three-medium heat exchanger uses three media for heat exchange, including working medium, heating medium and cooling medium. Its 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] Three-medium heat exchangers have superior thermodynamic properties and higher heat transfer efficiency than traditional heat exchangers, making them more compliant with industrial and environmental requirements. Specifically, three-medium heat exchangers not only transfer heat between two media, but also between three media, improving energy efficiency while reducing energy consumption and pollution. However, conventional three-medium heat exchangers are complex to produce, process, and assemble, with a high probability of failure and low reliability.

[0004] Heat exchange equipment is widely used in industries such as petroleum and chemical engineering. Currently, widely used shell-and-tube heat exchangers, shell-and-tube heat exchangers, and plate heat exchangers can only achieve simultaneous heat exchange between two media, not three, limiting their application areas. Three-media heat exchangers can only exchange heat between the first and second media, and between the second and third media, but not between the first and third media, limiting their application scenarios. 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 problems, 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 each side of the interior, the baffles including 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 of 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; a connecting pipe An is provided between the first cavity and the fourth cavity, a connecting pipe Am is provided between the fourth cavity and the second cavity, a connecting pipe Bn is provided between the sixth cavity and the third cavity, and a connecting pipe Bm is provided between the third cavity and the fifth cavity.

[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 from the middle, the inner diameter is large towards the fourth baffle and small towards the third baffle, and there is a slope transition structure in the middle.

[0012] Furthermore, in the above-mentioned dual-channel three-medium heat exchanger, a plurality of pipelines An, Am, Bn, and Bm are provided and 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-layer circular ring shape, the pipeline Am is arranged in a double-layer 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-layer circular ring shape, the pipeline Bm is arranged in a three-layer 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 heat exchanger cross section.

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

[0016] It can be seen from the above technical solution that the present invention has the following beneficial effects: the dual-channel three-medium heat exchanger described in the present invention is provided with a three-medium heat exchange structure, and the fluid medium one and fluid medium two adopt a multi-stage flow path design. The seventh cavity into which the 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, thereby achieving the purpose of energy conservation and environmental protection. It adopts an integrated design based on additive manufacturing technology, has a compact structure, occupies a small area, is easy to install and maintain, is suitable for many fields such as chemical industry, petroleum, pharmaceuticals, 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 dual-channel three-medium heat exchanger of the present invention;

[0018] Figure 2 This is a cross-sectional view of the flow paths of fluid medium 1 and fluid medium 2 of the present invention;

[0019] Figure 3 This is a cross-sectional view of three flow paths of the fluid medium of the present invention;

[0020] Figure 4 This is a schematic diagram of a dual-channel three-medium heat exchanger (second form) of the present invention;

[0021] Figure 5 This is a schematic diagram of the semicircular flow channel of a dual-channel three-medium heat exchanger (second form) of the present invention.

[0022] 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

[0023] Example 1

[0024] like Figure 1-2A dual-channel three-medium heat exchanger shown includes: a heat exchanger 1, which is integrally formed using an additive manufacturing process, and has three baffles 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. A base 9 is provided under the heat exchanger 1.

[0025] like Figure 2 The figure shows a dual-channel three-medium heat exchanger, in which 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 located between the third baffle 23 and the fourth baffle 24.

[0026] like Figure 2-3 The dual-channel, three-medium heat exchanger shown in FIG. 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 provided in the same direction on the side of the seventh cavity 37. A pipeline An71 connects the first cavity 31 to the fourth cavity 34, an pipeline Am72 connects the fourth cavity 34 to the second cavity 32, a pipeline Bn81 connects the sixth cavity 36 to the third cavity 33, and a pipeline Bm82 connects the third cavity 33 to the fifth cavity 35. A two-stage flow path design achieves a round-trip flow through the pipelines, enhancing the heat exchange effect.

[0027] 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.

[0028] In this embodiment, 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, for buffering and diffusion of the fluid.

[0029] In this embodiment, the base 9 serves as a carrier for fixing the heat exchanger 1 . The base 9 is provided with fixing threaded holes and is processed to reduce weight and save materials.

[0030] Example 2

[0031] On the basis of Example 1, in this embodiment, as Figure 2The dual-channel, three-medium heat exchanger shown in the figure has an inner diameter that is divided into a smaller and larger section in the middle. The inner diameter increases toward the fourth baffle 24 and decreases toward the third baffle 23, with a beveled transition structure in between. The dual-cavity design, large and small, ensures that the fluid medium 3 diffuses and exchanges heat within the large cavity section before flowing into the small cavity section for heat exchange, enhancing heat exchange capacity.

[0032] In this embodiment, a plurality of pipelines An71, Am72, Bn81, and Bm82 are provided and are evenly distributed in a circular shape.

[0033] In this embodiment, the pipeline An71 is set in a single-layer circular ring shape, the pipeline Am72 is set 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 set in a single-layer circular ring shape, the pipeline Bm82 is set in a three-layer circular ring shape, and the number of pipelines Bn81 is equal to the number of pipelines Bm82.

[0034] 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.

[0035] like Figure 2-3 The dual-channel three-medium heat exchanger shown in the figure has the interface Aa41 for introducing fluid medium 1 into the first cavity 31, entering the fourth cavity 34 through the pipeline An71, and then entering the second cavity 32 through the pipeline Am72, and finally flowing out from the interface Ab42; the interface Ba51 for introducing fluid medium 2 into the sixth cavity 36, entering the third cavity 33 through the pipeline Bn81, and then entering the fifth cavity 35 through the pipeline Bm82, and finally flowing out from the interface Bb52; the interface Ca61 for introducing fluid medium 3 into the seventh cavity 37, and finally flowing out from the interface Cb62.

[0036] 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.

[0037] In this embodiment, the pipeline An71, the pipeline Am72, the pipeline Bn81, and the pipeline Bm82 can be set to be in direct contact, so that the fluid medium 1 and the fluid medium 2 can fully exchange heat.

[0038] Example 3

[0039] On the basis of Examples 1 and 2, in this embodiment, as Figure 4A dual-channel three-medium heat exchanger is shown. The heat exchanger 1 is integrally formed by an additive manufacturing process, and three baffles are provided 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. A base 9 is provided under the heat exchanger 1.

[0040] In this embodiment, 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.

[0041] like Figure 4-5 A dual-channel three-medium heat exchanger is shown, wherein pipeline 1 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 1 91 is a semicircular flow channel, including an inner fluid domain and an outer fluid domain, wherein pipeline 1 91 is an outer fluid domain between the first cavity 31 and the fourth cavity 34, and an inner fluid domain between the fourth cavity 34 and the second cavity 32; pipeline 2 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 2 92 is a semicircular flow channel, including an inner fluid domain and an outer fluid domain, wherein pipeline 92 is an outer fluid domain between the sixth cavity 36 and the third cavity 33, and an inner fluid domain between the third cavity 33 and the fifth cavity 35.

[0042] 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.

[0043] 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. 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. The fluid medium 1 and the fluid medium 2 mainly exchange heat in the third cavity 33 and the fourth cavity 34.

[0044] In this embodiment, a plurality of pipelines 1 91 and 2 92 are provided, which are evenly distributed in a circular shape; pipeline 1 91 and pipeline 2 92 are alternately arranged in the radial direction of the cross section of the heat exchanger 1 .

[0045] In this embodiment, the pipeline 1 91 and the pipeline 2 92 can be arranged to be in direct contact with each other, so that the fluid medium 1 and the fluid medium 2 can fully exchange heat.

[0046] It should be noted that the above is merely a technical solution of the invention and is not intended to be limiting. Although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that the technical solution of the invention may be modified or replaced with equivalents without departing from the scope of the technical solution of the invention, and all such modifications or equivalents should be encompassed by 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 provided on both sides of the interior, the baffles comprising a first baffle (21), a second baffle (22), and a third baffle (23) provided on the same side, and a fourth baffle (24), a fifth baffle (25), and a sixth baffle (26) provided 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. The 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. The 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 inner diameters decreasing from the inside to the outside, and are used for fluid buffering and diffusion.

4. The 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 dual-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 portion in the middle, wherein the inner diameter is large toward the fourth baffle (24) and small toward the third baffle (23), with an inclined transition structure in the middle.

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

7. The 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 the pipeline An (71) is equal to the number of the pipeline Am (72).

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

10. The dual-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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