Efficient heat exchanger

Abstract

The utility model discloses an efficient heat exchanger which comprises an outer shell and an inner shell, the inner shell is sleeved with the outer shell, a heat exchange tube pass is formed by a hollow cavity of the inner shell, a heat exchange shell pass is formed by a cavity between the outer shell and the inner shell, and a plurality of first diameter expansion sections and first diameter shrinkage sections which are arranged at intervals are formed in the inner shell in the axial direction so as to improve heat exchange efficiency. The heat exchanger is reasonable in structure, good in heat exchange effect and beneficial to popularization and application.

Description

Technical Field

[0001] The utility model relates to the technical field of tail gas treatment, and specifically relates to an efficient heat exchanger. Background Art

[0002] In the production process of semiconductor manufacturing, tail gas containing various harmful substances will be generated. These tail gases need to be effectively treated to reduce the harm to the environment and personnel. The adsorption method is an important tail gas treatment method, and its main purpose is to remove harmful gases and particulate matters generated during the production process, ensuring a safe working environment and reducing environmental pollution. In some tail gas adsorption treatment processes, it is necessary to control the temperature of the tail gas in contact with the adsorbent to ensure good adsorption treatment effects, such as heating the tail gas before adsorption. However, when the tail gas flows out after passing through the adsorbent, it is also necessary to cool the tail gas to facilitate entry into the next treatment process. To improve the thermal energy utilization rate, a heat exchanger is usually used in cooperation. In the prior art, the heat exchanger has low heat exchange efficiency and poor heat exchange effect when the tail gas flow rate is large, and cannot well meet the use requirements. Content of the Utility Model

[0003] The utility model discloses an efficient heat exchanger, which solves the technical problems of low gas heat exchange efficiency and poor heat exchange effect in the prior art, and has the technical effects of reasonable structure and good heat exchange effect. The technical solutions adopted are as follows:

[0004] An efficient heat exchanger includes an outer shell and an inner shell. The outer shell is sleeved outside the inner shell. The hollow cavity of the inner shell forms a heat exchange tube pass, and the chamber between the outer shell and the inner shell forms a heat exchange shell pass. The inner shell axially forms a plurality of first enlarged diameter sections and first reduced diameter sections arranged at intervals to improve the heat exchange efficiency.

[0005] On the basis of the above technical solution, a first partition board is horizontally arranged in the first enlarged diameter section. The first partition board separates two adjacent first reduced diameter sections and forms a first annular channel between the first partition board and the inner wall surface of the inner shell.

[0006] On the basis of the above technical solution, a plurality of second partition boards are arranged in the heat exchange shell pass. The second partition boards are sleeved outside the first reduced diameter sections and form a second annular channel between the second partition boards and the first reduced diameter sections. The outer edges of the second partition boards are fixedly arranged on the inner wall surface of the outer shell.

[0007] On the basis of the above technical solution, the second partition boards are fixedly connected to the inner shell at corresponding positions through a plurality of columns to improve the structural stability of the second partition boards.

[0008] On the basis of the above technical solution, it further includes a fixedly arranged shaft rod. The shaft rod penetrates through the heat exchange tube pass, and the shaft rod passes through the first partition board and is fixedly connected to the first partition board.

[0009] On the basis of the above technical solution, the heat exchange tube pass is communicated with the outside through a number of first through holes arranged circumferentially, and the heat exchange shell pass is communicated with the outside through a number of second through holes arranged circumferentially.

[0010] On the basis of the above technical solution, a first baffle is fixedly provided near the outlet of the first through hole to change the flow direction of the air flow in and out of the first through hole, and / or a second baffle is fixedly provided near the outlet of the second through hole to change the flow direction of the air flow in and out of the second through hole.

[0011] On the basis of the above technical solution, the diameter change of the heat exchange tube pass is smoothly transitioned, and the diameter change of the heat exchange shell pass is smoothly transitioned.

[0012] Beneficial effects

[0013] The structure of the present utility model is reasonable. The heat exchange tube pass includes a first enlarged diameter section and a first reduced diameter section, so that the heat exchange area can be extended in the radial direction, thereby improving the heat exchange efficiency. In addition, the arrangement of the first partition plate and the second partition plate further extends the heat exchange stroke, and can make the heat exchange shell pass and the heat exchange tube pass extend in a fitting manner, which is beneficial to improving the heat exchange effect. In addition, the shaft rod penetrates through the heat exchange tube pass and is fixedly connected with a number of first partition plates. On the one hand, it guides the air flow to flow radially in the first enlarged diameter section, and on the other hand, it can improve the internal structural strength of the heat exchanger, which is beneficial to improving the service life.

[0014] In the present utility model, both ends of the heat exchange tube pass and the heat exchange shell pass are communicated with the outside through a number of through holes, which is beneficial to the smooth entry and exit of the air flow into or out of the heat exchange tube pass or the heat exchange shell pass. Brief description of the drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only one embodiment of the present utility model. For those of ordinary skill in the art, without creative efforts, other implementation drawings can be obtained according to the provided drawings.

[0016] Figure 1 : Schematic cross-sectional structure view of the front view of the present utility model;

[0017] Figure 2 : Figure 1 Schematic cross-sectional structure view of the inner shell in ;

[0018] Figure 3 : Figure 1 Schematic cross-sectional structure view of the outer shell in ; Specific implementation manners

[0019] The following description and the accompanying drawings fully disclose specific embodiments herein, enabling those skilled in the art to practice them. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. The scope of the embodiments herein includes the entire scope of the claims and all available equivalents of the claims. In this document, the terms "first", "second", etc. are only used to distinguish one element from another, without requiring or implying any actual relationship or order between these elements. In fact, the first element can also be called the second element, and vice versa. Moreover, the terms "comprising", "including" or any other variation thereof are intended to cover non-exclusive inclusion, such that a structure, device or apparatus comprising a series of elements not only includes those elements but also other elements not expressly listed, or elements inherent to such structure, device or apparatus. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of additional identical elements in the structure, device or apparatus comprising the said element. The embodiments herein are described in a progressive manner, with each embodiment highlighting the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.

[0020] In this document, the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing this document and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In the description herein, unless otherwise specified and defined, the terms "mounted", "connected" and "coupled" shall be understood in a broad sense. For example, it may be a mechanical connection or an electrical connection, or it may be the communication inside two elements. It may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0021] In this document, unless otherwise stated, the term "plurality" means two or more.

[0022] In this document, the character " / " indicates that the objects before and after are in an "or" relationship. For example, A / B means: A or B.

[0023] In this document, the term "and / or" is an associative relationship describing an object, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0024] As Figures 1 - 3An efficient heat exchanger shown in the figure includes a housing 1 and an inner housing 2, and the housing 1 is sleeved outside the inner housing.

[0025] As Figure 2 shown, the hollow cavity of the inner housing 2 forms a heat exchange tube pass. The inner housing 2 axially forms a number of first enlarged diameter sections 21 and first reduced diameter sections 22 arranged at intervals. Among them, a first partition 3 is horizontally arranged in each first enlarged diameter section 21, and the first partition 3 is fixedly arranged. In this way, the first partition 3 separates two adjacent first reduced diameter sections 22, and a first annular channel is formed between the first partition 3 and the inner wall surface of the inner housing 1.

[0026] The chamber between the housing 1 and the inner housing 2 forms a heat exchange shell pass. A number of second partitions 4 are arranged in the heat exchange shell pass. The second partitions 4 are sleeved outside the first reduced diameter sections 22 and form a second annular channel with the first reduced diameter sections 22. And the outer edges of the second partitions 4 are fixedly arranged on the inner wall surface of the housing. In this way, the heat exchange shell pass and the heat exchange tube pass extend in parallel, which can greatly extend the heat exchange stroke and improve the heat exchange efficiency.

[0027] As Figure 3 shown, the second partition 4 is fixedly connected to the inner housing 2 at the corresponding position through a number of columns to improve the structural stability of the second partition 4.

[0028] In addition, it also includes a fixedly arranged shaft rod 5. The shaft rod 5 is a hollow tube and penetrates through the heat exchange tube pass. The two ends of the shaft rod 5 are respectively fixedly connected to the top surface and the bottom surface of the housing 1. The shaft rod 5 passes through the first partition 3 and is fixedly connected to the first partition 3.

[0029] As Figure 1 shown, the air flow directions in the heat exchange tube pass and the heat exchange shell pass are opposite. The heat exchange tube pass is communicated with the outside through a number of first through holes 6 arranged circumferentially. Among them, the first through holes 6 extend radially. The heat exchange shell pass is communicated with the outside through a number of second through holes 7 arranged circumferentially. The second through holes 7 extend vertically. In addition, a second baffle is fixedly arranged near the outlet of the second through holes 7 to change the flow direction of the air flow in and out of the second through holes 7 and avoid disturbing the gas inside and outside the heat exchange shell pass when the air flow passes through the second through holes 7.

[0030] In addition, to avoid large vibrations formed during the air flow, the caliber change of the heat exchange tube pass is smoothly transitioned, and the caliber change of the heat exchange shell pass is smoothly transitioned.

[0031] The above has illustrated the present utility model by way of example, but the present utility model is not limited to the above specific embodiments. Any modification or variation based on the present utility model falls within the scope of protection required by the present utility model.

Claims

1. A highly efficient heat exchanger, characterized in that: The invention comprises an outer shell (1) and an inner shell (2), wherein the outer shell (1) is sleeved outside the inner shell (2), the hollow cavity of the inner shell (2) forms a heat exchange tube pass, the chamber between the outer shell (1) and the inner shell (2) forms a heat exchange shell pass, and the inner shell forms a plurality of first diameter expansion sections (21) and first diameter reduction sections (22) arranged at intervals along the axial direction, so as to improve the heat exchange efficiency.

2. The high-efficiency heat exchanger according to claim 1, characterized in that: A first partition plate (3) is horizontally arranged inside the first diameter expansion section (21), the first partition plate (3) separates two adjacent first diameter reduction sections (22) and forms a first annular channel with the inner wall surface of the inner shell (2).

3. The high-efficiency heat exchanger according to claim 2, characterized in that: A plurality of second baffles (4) are arranged in the heat exchange shell, the second baffles (4) are sleeved outside the first reduced diameter section (22) and form a second annular channel between the first reduced diameter section (22), and the outer edges of the second baffles (4) are fixedly arranged on the inner wall surface of the outer shell (1).

4. The high-efficiency heat exchanger according to claim 3, characterized in that: The second partition plate (4) is fixedly connected to the inner shell (2) at corresponding positions via a plurality of columns, so as to improve the structural stability of the second partition plate (4).

5. The high-efficiency heat exchanger according to claim 1, characterized in that: It also comprises a fixedly arranged shaft rod (5), the shaft rod (5) passing through the heat exchange tube, and the shaft rod (5) passing through the first partition plate (3) and being fixedly connected to the first partition plate (3).

6. The high-efficiency heat exchanger according to any one of claims 1 to 5, characterized in that: The heat exchange tube side is connected to the outside world through a plurality of first through holes (6) arranged circumferentially, and the heat exchange shell side is connected to the outside world through a plurality of second through holes (7) arranged circumferentially.

7. The high-efficiency heat exchanger according to claim 6, characterized in that: A first baffle is fixedly provided near the outlet of the first through hole (6) to change the flow direction of the airflow in and out of the first through hole (6), and / or a second baffle is fixedly provided near the outlet of the second through hole (7) to change the flow direction of the airflow in and out of the second through hole (7).

8. The high-efficiency heat exchanger according to claim 6, characterized in that: The heat exchange tube side has a smooth transition at the place where the diameter changes, and the heat exchange shell side has a smooth transition at the place where the diameter changes.

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