Heat recovery device for smoker

Abstract

The present invention discloses a heat recovery device for a smoker, comprising a heat exchange module, an upper end cover arranged on the top of the heat exchange module, a lower end cover arranged on the bottom of the heat exchange module, and an exhaust plate group arranged on the periphery of the heat exchange module; an air inlet pipe is arranged at the center of the heat exchange module, and one end of the air inlet pipe is passed through the upper end cover, and the other end is passed through the lower end cover, and an air outlet pipe is respectively arranged on the upper end cover and the lower end cover; a first flow channel and a second flow channel are arranged in the air inlet pipe, and air outlet holes are respectively arranged on the air inlet pipe at positions corresponding to the first flow channel and the second flow channel, and the air outlet holes are connected to the heat exchange module through the air outlet holes; the exhaust plate group comprises a first exhaust plate and a second exhaust plate, and air inlet holes are respectively arranged on the inner walls of the first exhaust plate and the second exhaust plate, and the air inlet holes are connected to the heat exchange module through the air inlet holes. The beneficial effects of the present invention are: the present invention solves the problems of low heat exchange efficiency, complex production process, and difficulty in disassembly and assembly of the existing waste heat recovery device.

Description

Technical Field

[0001] The invention relates to the field of heat recovery of smoker furnace gas, and in particular to a heat recovery device for a smoker furnace. Background Art

[0002] At present, there is still a blank in the field of waste heat recovery in the domestic smoke furnace field, but there are many achievements in the field of heat exchange similar to waste heat recovery. Traditional heat exchangers are usually partition heat exchangers, which are divided into tubular heat exchangers and plate heat exchangers. Both heat exchange methods are achieved through the cold and heat exchange on both sides of the partition. However, the traditional tubular heat exchanger and plate heat exchanger have the problem of low heat exchange efficiency due to unreasonable flow channel settings. Similarly, in the field of waste heat recovery of smoke furnaces, the waste heat recovery devices currently designed also have the problem of low heat exchange efficiency. Summary of the invention

[0003] In view of the problems existing in the prior art, the object of the present invention is to provide a heat recovery device for a smoker furnace with high waste heat recovery efficiency.

[0004] The technical solution of the present invention is as follows:

[0005] A heat recovery device for a smoker, characterized in that it comprises a heat exchange module, an upper end cover arranged on the top of the heat exchange module, a lower end cover arranged on the bottom of the heat exchange module and an exhaust plate group arranged on the periphery of the heat exchange module; an air inlet pipe is provided at the center position of the heat exchange module, and one end of the air inlet pipe is passed through the upper end cover, and the other end is passed through the lower end cover, and an air outlet pipe is respectively provided on the upper end cover and the lower end cover; a first flow channel and a second flow channel are provided in the inlet pipe, and air outlet holes are respectively provided on the inlet pipe at positions corresponding to the first flow channel and the second flow channel, and are connected with the heat exchange module through the air outlet holes; the exhaust plate group comprises a first exhaust plate and a second exhaust plate, an end portion of the first exhaust plate is connected with the upper end cover, an end portion of the second exhaust plate is connected with the lower end cover, and air inlet holes are respectively provided on the inner walls of the first exhaust plate and the second exhaust plate, and are connected with the heat exchange module through the air inlet holes.

[0006] The heat recovery device of a smoker furnace is characterized in that the heat exchange module includes a group of heat exchange plates coaxially stacked up and down, and a heat exchange flow channel is formed between adjacent heat exchange plates; the heat exchange plate includes a bottom plate, and the front side of the bottom plate is provided with bosses evenly distributed in the circumferential direction, and the bosses are arranged in at least two circles radially on the front side of the bottom plate, and the gap between two adjacent bosses on the bottom plate forms a flow channel; the bosses between two adjacent circles on the bottom plate are staggered to form a Y-shaped flow channel, and multiple groups of Y flow channels between the bosses constitute a maze-like flow channel.

[0007] The heat recovery device of a smoker furnace is characterized in that the first flow channel and the second flow channel both adopt a fan-shaped flow channel structure, and are arranged at intervals along the circumferential direction in the air inlet pipe and are not connected to each other; one end of the air inlet pipe is the air inlet of the first flow channel, and the other end is the air inlet of the second flow channel, and the air outlets of the first flow channel and the second flow channel are closed.

[0008] The heat recovery device for a smoker furnace is characterized in that the first exhaust plate and the second exhaust plate are clamped and fixed to each other; the upper end cover and the lower end cover are screwed and fixed to the first exhaust plate and the second exhaust plate respectively.

[0009] The heat recovery device for a smoker furnace is characterized in that air holes are opened on the wall surface of the first flow channel in odd-numbered layers, and the air holes are seamlessly connected to the heat exchange flow channels of the corresponding odd-numbered layers on the heat exchange module; air holes are opened on the wall surface of the second flow channel in even-numbered layers, and the air holes are seamlessly connected to the heat exchange flow channels of the corresponding even-numbered layers on the heat exchange module.

[0010] The heat recovery device for a smoker furnace is characterized in that air inlet holes are opened on the odd-numbered layers of the inner wall of the first exhaust fin, and the air inlet holes are seamlessly connected to the odd-numbered layers of heat exchange channels on the heat exchange module; air inlet holes are opened on the inner wall of the second exhaust fin, and the air inlet holes are seamlessly connected to the even-numbered layers of heat exchange channels on the heat exchange module.

[0011] The heat recovery device for a smoker is characterized in that the bosses have the same size on the same circle, and the size of the bosses on each circle increases uniformly from the inside to the outside.

[0012] The heat recovery device for a smoker is characterized in that the bottom plate is a circular ring-shaped stamping part.

[0013] The heat recovery device for a smoker furnace is characterized in that mounting holes are provided on the bottom plate, and each layer of heat exchange plates is positioned through the mounting holes.

[0014] The heat recovery device for a smoker furnace is characterized in that the boss adopts a quadrilateral structure.

[0015] The beneficial effects of the present invention are:

[0016] 1) Easy to produce, the heat exchanger has a simple structure and is stamped using a stamping die, so the production process is simple;

[0017] 2) Easy to install. Multiple heat exchanger sheets are stacked to form the core of the smoker waste heat recovery device. It can be directly fixed inside the smoker waste heat recovery device through the mounting holes with bolts;

[0018] 3) The labyrinth-like internal flow channel formed by the quadrilateral boss quickly contacts the quadrilateral boss over a large area, increasing the heat exchange area between the fluids. In addition, due to the blocking effect of the boss, the contact time between the fluid and the wall is increased, thereby greatly improving the waste heat recovery efficiency;

[0019] 4) The flow distribution is easy to distinguish. The flow channel design of the intake pipe and the exhaust plate separates the high-temperature gas from the low-temperature gas, and the flow distribution is clearly distinguished;

[0020] 5) The heat recovery device of the smoke furnace has high heat exchange efficiency, clear flow channel distinction, easy production and easy disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the heat exchange module structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the heat exchange plate structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the internal structure of the air intake pipe of the present invention;

[0025] Figure 5 It is a schematic diagram of the connection structure between the first exhaust plate and the second exhaust plate of the present invention.

[0026] In the figure: 1-heat exchange module, 101-bottom plate, 102-boss, 103-mounting hole, 2-inlet pipe, 201-first flow channel, 202-second flow channel, 203-air outlet, 3-upper end cover, 4-first exhaust plate, 5-lower end cover, 6-second exhaust plate, 7-outlet pipe, 8-inlet hole. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with the accompanying drawings and implementation modes. The positional relationship described in the text is consistent with the positional relationship direction of the accompanying drawings themselves, which is only for the convenience of description and does not limit the structure of the present invention.

[0028] The heat recovery device of the smoker comprises a heat exchange module 1, an air inlet pipe 2, a first exhaust plate 4, a second exhaust 6, an air outlet pipe 7, an upper end cover 3 and a lower end cover 5;

[0029] The heat exchange module 1 is composed of multiple heat exchange plates stacked up and down. The heat exchange plate is a circular stamping part, including a bottom plate 101, a boss 102 and a mounting hole 103; the boss 102 is obtained by stamping the front of the bottom plate 101, and is evenly distributed on the bottom plate 101 along the circumferential direction; at least two circles of bosses 102 are arranged on the front of the bottom plate 101, and are arranged in parallel on the same circle; the gap between two adjacent bosses 102 on the bottom plate 101 forms a flow channel; adjacent bosses 102 of different circles on the bottom plate 101 are staggered in the radial direction to form a Y-shaped flow channel; the bosses 102 on the bottom plate 101 are quadrilaterals; the bosses 102 on the same circle have the same size, and the size of the bosses 102 in each circle increases evenly from the inside to the outside; the heat exchange plate has multiple layers and the multiple layers of heat exchange plates are fixed by stacking and bolting in the mounting hole 103; different hot and cold fluids flow between two adjacent layers of heat exchange plates, that is, the odd-numbered layers are high-temperature fluids, and the even-numbered layers are low-temperature fluids.

[0030] The air intake pipe 2 is provided with a first flow channel 201 and a second flow channel 202, each of which is composed of a number of mutually incommunicating fan-shaped flow channels (i.e., each flow channel adopts a fan-shaped structure), the upper and lower ends of the air intake pipe 2 are respectively welded and fixed on the upper end cover 3 and the lower end cover 5, and the air intake pipe 2 is coaxially arranged with the heat exchange module 1; the first exhaust fin 4 and the second exhaust fin 6 are fixed on the periphery of the heat exchange module 1, and the first exhaust fin 4 and the second exhaust fin 6 are arranged at intervals and are mutually incommunicating. The first exhaust fin 4 and the second exhaust fin 6 have the same structure, with a snap-on protrusion on one side and a snap-on groove on the other side, and the first exhaust fin 4 and the second exhaust fin 6 are snap-on and fixed, and the upper end cover 3 and the lower end cover 5 are respectively fixed to the first exhaust fin 4 and the second exhaust fin 6 from the side by screws; the upper end cover 3 and the lower end cover 5 are respectively provided with an exhaust pipe 7 connected thereto, and the exhaust pipe 7 is fixed to the upper end cover 3 and the lower end cover 5 by bolts.

[0031] One end of the air inlet pipe 2 is the air inlet of the first flow channel 201, and the other end is the air inlet of the second flow channel 202, and the outlets of the first flow channel 201 and the second flow channel 202 are closed. The odd-numbered layers of the fan surface of each fan-shaped flow channel of the first flow channel 201 have air outlet holes 203, and the air outlet holes 203 are seamlessly connected with the corresponding odd-numbered layers of the heat exchange flow channel on the heat exchange module 1, and the even-numbered layers of the fan surface of each fan-shaped flow channel of the second flow channel 202 have air outlet holes 203, and the air outlet holes 203 are seamlessly connected with the corresponding even-numbered layers of the flow channel on the heat exchange module 1.

[0032] The odd-numbered layers of the exhaust surface of the first exhaust fin 4 are provided with air inlet holes 8 that are seamlessly connected to the odd-numbered layers of the heat exchange flow channels on the heat exchange module 1, and the even-numbered layers of the exhaust surface of the second exhaust fin 6 are provided with air inlet holes 8 that are seamlessly connected to the even-numbered layers of the heat exchange flow channels on the heat exchange module 1. The first exhaust fin 4 is connected to the upper end cover 3, and is connected to the air outlet pipe 7 through the upper end cover 3, and the second exhaust fin 6 is connected to the lower end cover 5, and is connected to the air outlet pipe 7 through the lower end cover 5.

[0033] Gas flow process:

[0034] The high-temperature gas enters from the first flow channel 201 of the air inlet pipe 2, enters the odd-numbered heat exchange flow channel of the heat exchange module 1 through the air outlet 203, fully contacts the wall for heat exchange in the labyrinth flow channel on the heat exchange plate, then flows from the odd-numbered heat exchange flow channel through the air inlet 8 into the first exhaust fin 4, enters the upper end cover 3 from the first exhaust fin 4, and is finally discharged from the air outlet pipe 7; the low-temperature gas enters from the second flow channel 202, enters the even-numbered heat exchange flow channel of the ventilation module through the air outlet 203, fully contacts the wall of the heat exchange plate in the labyrinth flow channel formed by the heat exchange plate, then enters the second exhaust fin 6 from the even-numbered heat exchange flow channel through the air inlet 8, enters the lower end cover 5 from the second exhaust fin 6, and is finally discharged from the air outlet pipe 7.

[0035] The present invention is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A heat recovery device for a smoker, characterized in that: The heat exchange module (1) comprises an upper end cover (3) arranged at the top of the heat exchange module (1), a lower end cover (5) arranged at the bottom of the heat exchange module (1), and an exhaust plate group arranged at the periphery of the heat exchange module (1); an air intake pipe (2) is arranged at the center of the heat exchange module (1), and one end of the air intake pipe (2) is passed through the upper end cover (3), and the other end is passed through the lower end cover (5); an air outlet pipe (7) is respectively arranged on the upper end cover (3) and the lower end cover (5); a first flow channel (201) and a second flow channel (202) are arranged in the air intake pipe (2), and the air intake pipe (2) Air outlet holes (203) are respectively provided at positions corresponding to the first flow channel (201) and the second flow channel (202), and are connected to the heat exchange module (1) through the air outlet holes (203); the exhaust plate group comprises a first exhaust plate (4) and a second exhaust plate (6), the end of the first exhaust plate (4) is connected to the upper end cover (3), and the end of the second exhaust plate (6) is connected to the lower end cover (5); the first exhaust plate (4) and the second exhaust plate (6) are respectively provided with air inlet holes (8) on their inner walls, and are connected to the heat exchange module (1) through the air inlet holes (8); The heat exchange module (1) comprises a group of heat exchange plates coaxially stacked up and down, wherein the heat exchange plates are adjacent to each other to form a heat exchange flow channel; the heat exchange plate comprises a bottom plate (101), the front side of the bottom plate (101) is provided with bosses (102) evenly distributed in the circumferential direction, and the bosses (102) are arranged at least two circles radially on the front side of the bottom plate (101), and the gap between two adjacent bosses (102) on the bottom plate (101) forms a flow channel; the bosses (102) between two adjacent circles on the bottom plate (101) are staggered to form a Y-shaped flow channel, and multiple groups of Y-shaped flow channels between the bosses (102) form a labyrinth flow channel; The first flow channel (201) and the second flow channel (202) both adopt a fan-shaped flow channel structure, and are arranged in a circumferentially spaced manner in the air intake pipe (2) and are not connected to each other; one end of the air intake pipe (2) is the air inlet of the first flow channel (201), and the other end is the air inlet of the second flow channel (202), and the air outlets of the first flow channel (201) and the second flow channel (202) are sealed; The wall surface of the first flow channel (201) is provided with air outlet holes (203) in odd-numbered layers, and the air outlet holes (203) are seamlessly connected to the heat exchange flow channels of the corresponding odd-numbered layers on the heat exchange module (1); the wall surface of the second flow channel (202) is provided with air outlet holes (203) in even-numbered layers, and the air outlet holes (203) are seamlessly connected to the heat exchange flow channels of the corresponding even-numbered layers on the heat exchange module (1); The first exhaust fin (4) has air inlet holes (8) on its inner wall at odd-numbered layers, and the air inlet holes (8) are seamlessly connected to the heat exchange flow channels on odd-numbered layers on the heat exchange module (1); the second exhaust fin (6) has air inlet holes (8) on its inner wall, and the air inlet holes (8) are seamlessly connected to the heat exchange flow channels on even-numbered layers on the heat exchange module (1).

2. The heat recovery device for a smoker according to claim 1, characterized in that: The first exhaust plate (4) and the second exhaust plate (6) are fixed to each other by being clamped; and the upper end cover (3) and the lower end cover (5) are respectively fixed to the first exhaust plate (4) and the second exhaust plate (6) by being screwed.

3. The heat recovery device for a smoker according to claim 1, characterized in that: The bosses (102) have the same size on the same circle, and the size of the bosses (102) on each circle increases uniformly from the inside to the outside.

4. The heat recovery device for a smoker according to claim 1, characterized in that: The bottom plate (101) is a circular ring-shaped stamping part.

5. The heat recovery device for a smoker according to claim 1, characterized in that: The bottom plate (101) is provided with mounting holes (103), and each layer of heat exchange plates is positioned via the mounting holes (103).

6. The heat recovery device for a smoker according to claim 1, characterized in that: The boss (102) has a quadrilateral structure.

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