Indirectly heated heat exchanger of novel construction
By connecting the combustion chamber and the rear smoke box, using air knife cooling, and improving the heat dissipation pipe layout, the cracking and maintenance problems of the heat exchanger were solved, resulting in better product quality, extended equipment life, and reduced maintenance costs.
Patent Information
- Application Number
- CN202423234316.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-26
AI Technical Summary
Existing heat exchangers have a temperature difference between the combustion chamber and the smoke box, which causes cracking, making maintenance difficult. Exhaust gas can seep into other chambers, and uneven heat distribution can lead to excessive local stress, affecting equipment lifespan and maintenance costs.
The combustion chamber and rear smoke box are designed with movable connection, combined with air knife and heat sink structure. The air knife can quickly cool down the heat sink, the heat sink layout can be improved to distribute heat evenly, and the connection can be sealed with clamps and asbestos ropes.
It avoids cracking of the combustion chamber and smoke box, prevents exhaust gas from entering, improves product quality, facilitates disassembly and maintenance of the whole machine, reduces local heat accumulation, extends equipment life and improves heat transfer efficiency.
Smart Images
Figure CN223610155U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of heat exchanger especially relates to a new structure's indirect heating heat exchanger. BACKGROUND
[0002] At present, in the coating equipment industry, the heat exchanger main part includes: flame combustion cylinder 100, rear smoke box 200, front smoke box 300, smoke exhaust box 400, heat exchange pipe 500, support chassis 600 and other parts (such as Figure 10 and Figure 11 As shown), each part is connected by welding. When the heat exchanger works, a gas / oil burner is needed to be installed at the front end of the combustion cylinder 100, the flame sprayed by the burner burns in the combustion cylinder 100, the high-temperature exhaust gas produced by the burning enters the rear smoke box 200, and then enters the front smoke box 300 through the lower half heat exchange pipe 501, and then enters the upper half heat exchange pipe 502, and finally reaches the smoke exhaust box 400. The smoke exhaust box 400 is provided with a smoke exhaust port 401, and the rear end is connected with a pipeline to exhaust the exhaust gas to a designated place outside the equipment. When the high-temperature exhaust gas passes through the combustion cylinder 100, the rear smoke box 200, the front smoke box 300, the heat exchange pipe 500 and the smoke exhaust box 400, heat conduction occurs, the heat exchanger is heated, and part of the heat generated by the burning is retained. At this time, the low-temperature air outside the heat exchanger circulates, and after contacting the outer surface of the heat exchanger, the heat on the heat exchanger is taken away, achieving the purpose of heating the external air.
[0003] However, the heat exchanger in the above prior art has the following defects in the specific use process: first, since the combustion cylinder is a flame combustion area, there is a large temperature difference between the combustion cylinder and the front smoke box and the rear smoke box, which causes the expansion lengths of the materials to be inconsistent. After a certain period of use, cracking is likely to occur between the combustion cylinder and the smoke box, which causes the exhaust gas in the indirect heat exchanger to enter other chamber bodies, affects the quality of the product, and causes certain losses to the customers. Second, since each part of the heat exchanger is welded, when a part is damaged, the whole machine cannot be disassembled, and the maintenance is difficult, which increases the cost of the customers in the later use. Third, in this structure, the path of the external low-temperature air flowing through the heat exchanger is still not uniform and timely, causing local heat accumulation, resulting in excessive local stress and affecting the service life of the equipment. UTILITY MODEL CONTENTS
[0004] In order to solve the above problems, the utility model provides a new type of indirect heat exchanger which is not easy to crack between the combustion cylinder and the rear smoke box, the exhaust gas in the heat exchanger does not enter other chamber bodies, the quality of the product is better, the whole machine can be disassembled, the maintenance is more convenient, and the local heat accumulation is reduced.
[0005] The utility model discloses a technical scheme is: provide a novel structure's indirect heating heat exchanger, including support frame, the combustion cylinder of being located on support frame, rear smoke box, first radiating pipe group, front smoke box, second radiating pipe group to and have the smoke exhaust box of smoke exhaust port, still include air knife, the air knife is located between the combustion cylinder and rear smoke box, and the mouth of air knife is towards rear smoke box, the first radiating pipe group's middle and second radiating pipe group's middle along longitudinal direction are equipped with the first passageway and second passageway of intercommunication respectively, the first passageway is communicated with the top of combustion cylinder, surrounds the outer surface of combustion cylinder and is equipped with a number of circles of the fin for radiating, and the movable joint between combustion cylinder and rear smoke box.
[0006] As the improvement of the utility model, the combustion cylinder and the rear smoke box are connected through the hoop.
[0007] As the improvement of the utility model, the air knife is located at the side of the hoop close to the rear smoke box.
[0008] As the improvement of the utility model, the shape of the air knife is the imitation half circle, and is consistent with the end of the combustion cylinder close to the rear smoke box, two air inlets are equipped on the both sides of the air knife for connecting external air source, and the air knife is sleeved on the end of the combustion cylinder close to the rear smoke box.
[0009] As the improvement of the utility model, a number of the fins are arranged at the predetermined interval.
[0010] As the improvement of the utility model, the inner wall of the hoop is equipped with the square asbestos rope.
[0011] As the improvement of the utility model, the inner wall of the hoop is equipped with the containing recess, and the square asbestos rope is located in the containing recess.
[0012] As the improvement of the utility model, the smoke exhaust port is located at the top of the smoke exhaust box.
[0013] As the improvement of the utility model, the first radiating pipe group includes dozens of first radiating pipes, and the first passageway divides the first radiating pipe group into two areas.
[0014] As the improvement of the utility model, the second radiating pipe group includes dozens of second radiating pipes, and the second passageway divides the second radiating pipe group into two areas.
[0015] The utility model discloses a support frame, the combustion cylinder of being located on the support frame, the rear smoke box, the first radiating pipe group, the front smoke box, the second radiating pipe group and with the smoke exhaust box of smoke exhaust port, still include the air knife, the air knife is located between the combustion cylinder and the rear smoke box, and the air knife's cutting edge is towards the rear smoke box, the first radiating pipe group's middle and the middle of second radiating pipe group are along longitudinal respectively and are equipped with the first passageway and the second passageway of intercommunication, the first passageway is communicated with the top of combustion cylinder, surrounds the outer surface of the combustion cylinder and is equipped with a number of rounds of the fin for radiating, and the combustion cylinder and the rear smoke box are movably connected. The utility model has the advantages of not easy cracking between the combustion cylinder and the rear smoke box, the exhaust gas in heat exchanger can not be into other chamber body, the quality of product is better, the whole machine can be disassembled, and the maintenance is more convenient, and the local heat accumulation is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 is a side view schematic diagram of one embodiment of the utility model.
[0017] Figure 2 is Figure 1 the front view schematic diagram of.
[0018] Figure 3 is Figure 2 the side view schematic diagram of the combustion cylinder in.
[0019] Figure 4 is Figure 2 the side view schematic diagram of the rear smoke box of.
[0020] Figure 5 is Figure 2 the side view schematic diagram of the front smoke box of.
[0021] Figure 6 is the side view schematic diagram of air knife.
[0022] Figure 7 is the front view schematic diagram of the hoop.
[0023] Figure 8 is the longitudinal section schematic diagram of the hoop.
[0024] Figure 9 is Figure 8 the enlarged schematic diagram of I in.
[0025] Figure 10 is the side view schematic diagram of prior art.
[0026] Figure 11 is Figure 10 the front view schematic diagram of. DETAILED DESCRIPTION
[0027] Please see Figures 1 to 9 , Figures 1 to 9Disclosed is an embodiment of a new type of indirect heat exchanger, a new type of indirect heating heat exchanger, comprising a support frame 1, a combustion cylinder 2 located on the support frame 1, a rear smoke box 31, a first heat dissipation pipe group 41, a front smoke box 32, a second heat dissipation pipe group 42, and a smoke exhaust box 5 with a smoke exhaust port 50 located at the top of the smoke exhaust box 5; specifically, in the embodiment, the combustion cylinder 2 is installed on the support frame 1, the first heat dissipation pipe group 41 and the second heat dissipation pipe group 42 are located directly above the combustion cylinder 2, the rear smoke box 31 is located at the rear end of the combustion cylinder 2 and the first heat dissipation pipe group 41, and the combustion cylinder 2 and the rear smoke box 31 are movably connected; this design has the advantage that the combustion cylinder 2 has a larger movable extension after being heated, avoiding extrusion on the rear smoke box 31, eliminating stress deformation caused by thermal expansion and cold contraction, avoiding cracking between the combustion cylinder 2 and the rear smoke box 31, thereby avoiding the leakage of exhaust gas in the heat exchanger into other chambers and improving product quality; the front smoke box 32 is located at the front end of the first heat dissipation pipe group 41 and the second heat dissipation pipe group 42, the smoke exhaust box 5 is located at the rear end of the second heat dissipation pipe group 42, the combustion cylinder 2, the rear smoke box 31, the first heat dissipation pipe group 41, the front smoke box 32, the second heat dissipation pipe group 42, and the smoke exhaust box 5 are connected in communication, and the flow path of the burned exhaust gas is from the combustion cylinder 2, through the rear smoke box 31, the first heat dissipation pipe group 41, the front smoke box 32, the second heat dissipation pipe group 42, and finally discharged from the smoke exhaust port 50 of the smoke exhaust box 5; the utility model also comprises a wind knife 6, which is located between the combustion cylinder 2 and the rear smoke box 31, and the knife edge 61 of the wind knife 6 faces the rear smoke box 31; the wind knife 6 is connected to an external gas source, and the gas is blown from the knife edge 61 of the wind knife to the rear smoke box 31, achieving the purpose of rapid cooling of the joint between the combustion cylinder 2 and the rear smoke box 31, thereby reducing the risk of deformation and cracking of the rear smoke box 31; in the embodiment, the middle of the first heat dissipation pipe group 41 and the middle of the second heat dissipation pipe group 42 are respectively provided with a first channel 411 and a second channel 421 in communication along the longitudinal direction, the first channel 411 is in communication with the top of the combustion cylinder 2, specifically, the first heat dissipation pipe group 41 comprises dozens of first heat dissipation pipes 412, the first channel 411 divides the first heat dissipation pipe group 41 into two regions, the second heat dissipation pipe group 42 comprises dozens of second heat dissipation pipes 422, and the second channel 421 divides the second heat dissipation pipe group 42 into two regions.A plurality of heat dissipation fins 21 are arranged around the outer surface of the combustion cylinder 2 for heat dissipation, the heat dissipation fins 21 are more conducive to timely heat conduction and removal, increase the heat transfer efficiency of the equipment, reduce the temperature rise time of the equipment, and are conducive to energy saving of the equipment; when the heat exchanger is in operation, a gas / oil burner (not shown in the figure) is arranged at the front end of the combustion cylinder 2, the burner is inserted into the interior of the combustion cylinder 2, when the burner is in normal operation, the flame sprayed at the front end burns in the interior of the combustion cylinder 2, the high temperature generated by the flame heats the combustion cylinder 2, the temperature of the combustion cylinder 2 is relatively high, and the high-temperature exhaust gas generated by combustion advances along the direction of combustion, enters the rear smoke box 31 through the combustion cylinder 2, and then enters the front smoke box 32 through the first heat dissipation pipe group 41, the exhaust gas enters the second heat dissipation pipe group 42, and then reaches the smoke exhaust box 5, the smoke exhaust box 5 is provided with a smoke exhaust opening 50, and the rear end is connected with a pipeline (not shown in the figure) for exhausting the exhaust gas to a designated place outside the equipment. The high-temperature exhaust gas passes through the combustion cylinder 2, the rear smoke box 31, the first heat dissipation pipe group 41, the front smoke box 32, the second heat dissipation pipe group 42 and the smoke exhaust opening 50 of the smoke exhaust box 5, and heat conduction occurs, so that the heat exchanger is heated, part of the heat generated by combustion is left, at this time, low-temperature air circulates outside the heat exchanger, after contacting the outer surface of the heat exchanger, the heat on the heat exchanger is taken away, the purpose of heating the external air is achieved, and the heat exchanger is also cooled, so that the heat exchanger can be normally used.
[0028] In the utility model, preferably, the combustion cylinder 2 and the rear smoke box 31 are connected through the hoop 7, specifically, the inner wall of the hoop 7 is provided with the square asbestos rope 71, the inner wall of the hoop 7 is provided with the accommodating groove 70, the square asbestos rope 71 is located in the accommodating groove 70, the square asbestos rope 71 can be flame-retardant and can achieve the purpose of sealing, so that the butt joint position is not gas leakage, and the problem of product pollution is eliminated.
[0029] In the utility model, preferably, the air knife 6 is located at the side of the hoop 7 close to the rear smoke box 31, specifically, the shape of the air knife 6 is semi-circular, and the air knife 6 is in line with the end of the combustion cylinder 2 close to the rear smoke box 31, two air inlets 62 are arranged on the two sides of the air knife 6 for connecting external air sources, and the air knife 6 is sleeved on the end of the combustion cylinder 2 close to the rear smoke box 31.
[0030] In the utility model, preferably, the plurality of heat dissipation fins 21 are arranged at a predetermined interval, so that better heat dissipation effect can be achieved.
[0031] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.
Claims
1. A new structure of indirect heating heat exchanger, comprising a support frame (1), a combustion cylinder (2) located on the support frame (1), a rear smoke box (31), a first group of radiating pipes (41), a front smoke box (32), a second group of radiating pipes (42), and a smoke exhaust box (5) with a smoke exhaust port (50), characterized in that: Further comprising a wind knife (6) located between the combustion cylinder (2) and the rear smoke box (31), and the blade edge (61) of the wind knife (6) faces the rear smoke box (31), the middle of the first heat dissipation pipe group (41) and the middle of the second heat dissipation pipe group (42) are respectively provided with a first channel (411) and a second channel (421) in communication in the longitudinal direction, the first channel (411) is communicated with the top of the combustion cylinder (2), a plurality of heat dissipation fins (21) for heat dissipation are arranged around the outer surface of the combustion cylinder (2), and the combustion cylinder (2) and the rear smoke box (31) are movably connected.
2. The novel construction of indirect heat exchanger of claim 1, characterized by: The combustion cylinder (2) and the rear smoke box (31) are connected through a hoop (7).
3. The novel construction of indirect heat exchanger of claim 2, wherein: The wind knife (6) is located on the side of the hoop (7) close to the rear smoke box (31).
4. The novel construction of indirect heat exchanger of claim 3, wherein: The shape of the wind knife (6) is semi-circular, and is matched with the end of the combustion cylinder (2) close to the rear smoke box (31), two air inlets (62) are arranged on the two sides of the wind knife (6) for connecting external air source, and the wind knife (6) is sleeved on the end of the combustion cylinder (2) close to the rear smoke box (31).
5. The novel construction of indirect heat exchanger of claim 1, wherein: The plurality of heat dissipation fins (21) are arranged at a predetermined interval.
6. The novel construction of indirect heat exchanger of claim 2, wherein: The inner wall of the hoop (7) is provided with a square asbestos rope (71).
7. The novel construction of indirect heat exchanger of claim 6, wherein: The inner wall of the hoop (7) is provided with a containing groove (70), and the square asbestos rope (71) is located in the containing groove (70).
8. The novel construction of indirect heat exchanger of claim 1, wherein: The smoke exhaust port (50) is located at the top of the smoke exhaust box (5).
9. The novel construction of indirect heat exchanger of claim 1, wherein: The first heat dissipation pipe group (41) comprises dozens of first heat dissipation pipes (412), and the first channel (411) divides the first heat dissipation pipe group (41) into two areas.
10. The novel structured indirect heat exchanger of claim 9, wherein: The second heat dissipation pipe group (42) comprises dozens of second heat dissipation pipes (422), and the second channel (421) divides the second heat dissipation pipe group (42) into two areas.