Efficient waste heat recovery heat exchanger

Abstract

The utility model relates to an efficient waste heat recovery heat exchanger which comprises a shell, a hot air side inlet, a hot air side outlet, a cold air side inlet and a cold air side outlet. The shell is of a cuboid structure; a hot air inlet cavity is formed in one side of one end of the shell; a hot air outlet cavity is formed in one side of the other end of the shell; the hot air inlet cavity and the hot air outlet cavity are distributed at the two ends of the shell in a diagonal mode. A cold air inlet cavity is formed in one side of one end of the shell; a cold air outlet cavity is formed in one side of the other end of the shell; the cold air inlet cavity and the cold air outlet cavity are distributed at the two ends of the shell in a diagonal mode. The hot air inlet cavity and the cold air inlet cavity are distributed at the two ends of the same side of the shell. The hot air outlet cavity and the cold air outlet cavity are distributed at the two ends of the same side of the shell. And a plurality of fins are arranged in the shell. The utility model has the advantages of long design, compact structure, light weight, high preheating recovery efficiency and long service life.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchanger processing, in particular to a high-efficiency waste heat recovery heat exchanger. Background Art

[0002] The waste heat recovery heat exchanger is a highly efficient heat exchange and energy-saving device that uses heat pipes as heat transfer elements. It is suitable for recovering waste heat from flue gas and uses the recovered waste heat to heat water, preheat air, and generate steam. The waste heat recovery heat exchanger has a significant effect in saving coal, gas, and fuel oil in industrial operations.

[0003] At present, the waste heat recovery heat exchanger has the following problems:

[0004] (1) Large size and large space occupation:

[0005] (2) Waste heat recovery efficiency is low:

[0006] (3) Short service life.

[0007] Therefore, it is desired to provide a high-efficiency waste heat recovery heat exchanger in order to solve the above-mentioned technical problems. Utility Model Content

[0008] The utility model aims to provide a high-efficiency waste heat recovery heat exchanger with a long design, a compact structure, light weight, high preheating recovery efficiency and a long service life.

[0009] In order to achieve the above-mentioned utility model object, a high-efficiency waste heat recovery heat exchanger is provided, comprising a shell, a hot air side inlet, a hot air side outlet, a cold air side inlet and a cold air side outlet;

[0010] The shell is a rectangular parallelepiped structure;

[0011] A hot air inlet cavity is provided on one side of one end of the shell, and the hot air side inlet is connected to the hot air inlet cavity;

[0012] A hot air outlet cavity is provided on one side of the other end of the shell, and the hot air outlet cavity is connected to the hot air side outlet;

[0013] The hot air inlet cavity and the hot air outlet cavity are diagonally distributed at two ends of the shell;

[0014] A cold air inlet cavity is provided on one side of one end of the shell, and the cold air side inlet is connected to the cold air inlet cavity;

[0015] A cold air outlet cavity is provided on one side of the other end of the shell, and the cold air outlet cavity is connected to the cold air side outlet;

[0016] The cold air inlet cavity and the cold air outlet cavity are diagonally distributed at two ends of the shell;

[0017] The hot air inlet cavity and the cold air inlet cavity are distributed at two ends of the same side of the shell;

[0018] The hot air outlet cavity and the cold air outlet cavity are distributed at two ends of the same side of the shell.

[0019] A plurality of fins are arranged in the shell.

[0020] Preferably, the fins are corrugated fins, and multiple groups of the corrugated fins are adjacent to each other in sequence and parallel to each other. The top and bottom of the corrugated fins are respectively welded to the top and bottom of the inner wall of the shell, and the multiple groups of the corrugated fins form multiple groups of fluid channels between the shells;

[0021] The plurality of groups of fluid channels are divided into cold air flow channels and hot air flow channels;

[0022] The cold air flow channel and the hot air flow channel are sequentially spaced and distributed;

[0023] One end of the plurality of cold air flow channels is connected to the cold air inlet cavity, and the other end is connected to the cold air outlet cavity;

[0024] One end of the plurality of hot air flow channels is connected to the hot air inlet cavity, and the other end is connected to the hot air outlet cavity.

[0025] Further, the corrugated fin has a stepped portion on one side and a straight portion on the other side;

[0026] A plurality of groups of corrugated fins are evenly spaced and distributed in the shell.

[0027] Preferably, the surface of the fin has an anti-corrosion layer.

[0028] Compared with the prior art, the high-efficiency waste heat recovery heat exchanger of the utility model has the following advantages:

[0029] (1) It adopts a narrow and long design with compact and lightweight structure, which can meet the requirements of installation space. The external pipe fittings and flange connections can meet multi-angle and all-round installation requirements. The compact structure reduces product costs and is more competitive in the market than similar products.

[0030] (2) Effectively control the intermediate temperature value during design, give priority to calculating the waste heat recovery heat exchanger to infer the cold air volume required for the cooling heat exchanger. Use high-efficiency fins to take into account the heat exchange of cold air and hot air, reduce the flow resistance on both sides, and avoid uneven flow due to narrow and long design. The flow direction arrangement and heat dissipation area distribution can be more flexible, and the head shape and joint position can be freely designed;

[0031] (3) Anti-corrosion design to meet high temperature and high pressure requirements;

[0032] (4) The overall product structure is compact and the waste heat recovery efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic diagram of a high-efficiency waste heat recovery heat exchanger of this embodiment;

[0034] Figure 2 Schematic diagram of the structure of the connection between the corrugated fin and the shell in this embodiment. DETAILED DESCRIPTION

[0035] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0036] Example

[0037] like Figure 1 As shown, a high-efficiency waste heat recovery heat exchanger includes a shell 1, a hot air side inlet 2, a hot air side outlet 3, a cold air side inlet 4 and a cold air side outlet 5.

[0038] The housing 1 is a rectangular parallelepiped structure, adopts a narrow and long design, has a compact structure, is lightweight, and can meet the requirements of a relatively demanding installation space. The housing 1 is a narrow and long design, has a compact structure, is lightweight, and can meet the requirements of a relatively demanding installation space. The external pipe fittings and flange connections can achieve multi-angle and all-round installation requirements. The compact structure reduces product costs.

[0039] A hot air inlet cavity 6 is provided on one side of one end of the shell 1, and the hot air side inlet 2 is connected to the hot air inlet cavity 6; a hot air outlet cavity 7 is provided on one side of the other end of the shell 1, and the hot air outlet cavity 7 is connected to the hot air side outlet 3; the hot air inlet cavity 6 and the hot air outlet cavity 7 are diagonally distributed at both ends of the shell 1.

[0040] A cold air inlet cavity 8 is provided on one side of one end of the shell 1, and the cold air side inlet 4 is connected to the cold air inlet cavity 8; a cold air outlet cavity 9 is provided on one side of the other end of the shell 1, and the cold air outlet cavity 9 is connected to the cold air side outlet 4; the cold air inlet cavity 8 and the cold air outlet cavity 9 are diagonally distributed at both ends of the shell 1.

[0041] The hot air inlet cavity 6 and the cold air inlet cavity 8 are distributed at two ends of the same side of the shell 1 ; the hot air outlet cavity 7 and the cold air outlet cavity 9 are distributed at two ends of the same side of the shell 1 .

[0042] A plurality of fins are arranged in the housing 1 .

[0043] In this embodiment, the surface of the fin has an anti-corrosion layer.

[0044] In this embodiment, if Figure 2 As shown, the fins are corrugated fins 11, and multiple groups of the corrugated fins 11 are adjacent to each other in sequence and parallel to each other. The top and bottom of the corrugated fins 11 are respectively welded to the top and bottom of the inner wall of the shell 1, and the multiple groups of the corrugated fins 11 form multiple groups of fluid channels 12 between the shell 1; the multiple groups of the fluid channels 12 are divided into cold air channels 13 and hot air channels 14; the cold air channels 13 and the hot air channels 14 are distributed in sequence at intervals; one end of several of the cold air channels 13 is connected to the cold air inlet cavity 8, and the other end is connected to the cold air outlet cavity 9; one end of several of the hot air channels 14 is connected to the hot air inlet cavity 6, and the other end is connected to the hot air outlet cavity 7.

[0045] Furthermore, in this embodiment, one side of the corrugated fin 11 has a stepped portion 15, and the other side has a straight portion 16. A plurality of groups of the corrugated fins 11 are evenly spaced and distributed in the housing 1.

[0046] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A high-efficiency waste heat recovery heat exchanger, characterized in that: It includes a shell, a hot air side inlet, a hot air side outlet, a cold air side inlet and a cold air side outlet; The shell is a rectangular parallelepiped structure; A hot air inlet cavity is provided on one side of one end of the shell, and the hot air side inlet is connected to the hot air inlet cavity; A hot air outlet cavity is provided on one side of the other end of the shell, and the hot air outlet cavity is connected to the hot air side outlet; The hot air inlet cavity and the hot air outlet cavity are diagonally distributed at two ends of the shell; A cold air inlet cavity is provided on one side of one end of the shell, and the cold air side inlet is connected to the cold air inlet cavity; A cold air outlet cavity is provided on one side of the other end of the shell, and the cold air outlet cavity is connected to the cold air side outlet; The cold air inlet cavity and the cold air outlet cavity are diagonally distributed at two ends of the shell; The hot air inlet cavity and the cold air inlet cavity are distributed at two ends of the same side of the shell; The hot air outlet cavity and the cold air outlet cavity are distributed at two ends of the same side of the shell; A plurality of fins are arranged in the shell.

2. The high-efficiency waste heat recovery heat exchanger according to claim 1, characterized in that: The fins are corrugated fins, and multiple groups of the corrugated fins are adjacent to each other in sequence and parallel to each other. The top and bottom of the corrugated fins are respectively welded to the top and bottom of the inner wall of the shell, and the multiple groups of the corrugated fins form multiple groups of fluid channels between the shells; The plurality of groups of fluid channels are divided into cold air flow channels and hot air flow channels; The cold air flow channel and the hot air flow channel are sequentially spaced and distributed; One end of the plurality of cold air flow channels is connected to the cold air inlet cavity, and the other end is connected to the cold air outlet cavity; One end of the plurality of hot air flow channels is connected to the hot air inlet cavity, and the other end is connected to the hot air outlet cavity.

3. A high-efficiency waste heat recovery heat exchanger as claimed in claim 2, characterized in that: The corrugated fin has a stepped portion on one side and a straight portion on the other side; A plurality of groups of corrugated fins are evenly spaced and distributed in the shell.

4. A high-efficiency waste heat recovery heat exchanger according to any one of claims 1 to 3, characterized in that: The surface of the fin is provided with an anti-corrosion layer.

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