Heat recovery device of hot blast stove

Abstract

The utility model discloses a heat recovery device of a hot blast stove, the hot blast stove is provided with a hot air outlet, and the heat recovery device is characterized by comprising a heat recovery assembly and an air outlet assembly, an inlet of the heat recovery assembly is communicated with a hot air outlet of the hot blast stove; in the horizontal direction, at least part of the projection area of the heat recovery assembly coincides with the hot blast stove. An outlet of the heat recovery assembly communicates with the air outlet assembly, and the air outlet assembly is used for conveying hot air to the external space. Waste heat recovery of the external space of the hot blast stove can be achieved, and the energy utilization rate is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of hot air generation, in particular to a heat recovery device for a hot air stove. Background Art

[0002] Currently, tea baking typically uses a hot air furnace and a blower to deliver hot air to the tea baking chamber. Existing hot air furnaces typically generate heat through combustion in the combustion chamber, and then use a blower to deliver the heat directly to the tea baking chamber or other spaces requiring hot air. However, some of the heat generated by combustion in the hot air furnace's combustion chamber is absorbed by the furnace body and lost to the space outside the hot air furnace, preventing the heat from being fully utilized and delivered to the designated space. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a heat recovery device for a hot blast stove to improve the heat utilization rate.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A heat recovery device for a hot blast stove, the hot blast stove having a hot blast outlet, the heat recovery device comprising a heat recovery component and an air outlet component;

[0006] The inlet of the heat recovery component is in communication with the hot air outlet of the hot air stove;

[0007] In the horizontal direction, the projected area of the heat recovery assembly at least partially overlaps with the hot blast stove;

[0008] The outlet of the heat recovery component is communicated with the air outlet component, and the air outlet component is used to transport hot air to the external space.

[0009] Furthermore, the heat recovery component is at least partially distributed along the axial direction of the hot blast stove, and the heat recovery component is arranged adjacent to the hot blast stove.

[0010] Furthermore, the heat recovery component includes an air supply section and a heat collection section;

[0011] The air supply section is arranged adjacent to the top of the hot blast stove, the heat collecting section is arranged adjacent to the circumferential side wall of the hot blast stove, and the heat collecting section is U-shaped.

[0012] Furthermore, the heat collection section includes a heat recovery pipe and at least three heat recovery fins;

[0013] In the circumferential direction of the heat recovery pipe, all the heat recovery fins are distributed at equal intervals.

[0014] Furthermore, a diversion device is provided between the inlet of the air outlet component and the outlet end of the heat recovery component, so that the heat flowing out of the hot air furnace passes through the heat recovery component and then enters the air outlet component.

[0015] Furthermore, the drainage device includes a drainage drive and a heat collector;

[0016] The flow-guiding driving member is in communication with the heat collector, and the heat collector is also in communication with the air outlet assembly and the heat recovery assembly respectively.

[0017] Further, the heat recovery device includes a housing;

[0018] The outer shell is arranged outside the hot air furnace, the heat recovery component and the air outlet component.

[0019] Furthermore, the air outlet assembly includes a first heat collecting assembly and a second heat collecting assembly that are perpendicular to each other;

[0020] The first heat collecting assembly is disposed adjacent to the top of the hot blast stove;

[0021] In the vertical direction, the second heat collecting assembly is extended in a direction away from the hot air stove.

[0022] Furthermore, the first heat collection assembly includes a first heat collection pipe and at least two first connection covers;

[0023] Both ends of the first heat collecting pipe are respectively connected to the first connecting cover;

[0024] There are a plurality of the first heat collecting tubes, all of which are parallel to each other and arranged adjacent to each other, and the distribution direction of the first heat collecting tubes is parallel to the radial direction of the hot blast furnace.

[0025] Furthermore, it also includes an air intake assembly;

[0026] The hot air furnace is communicated with the external space through the air inlet assembly.

[0027] The beneficial effect of the present invention is that the present invention further recovers the waste heat in the external space of the hot blast stove by adding a heat recovery component and an air outlet component, so that the heat generated by the combustion of the hot blast stove is fully utilized, the heat loss is reduced, and the heat utilization rate is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of the hot air furnace and its heat recovery device in this utility model Figure 1 ;

[0029] Figure 2 This is a schematic diagram of the structure of the hot air furnace and its heat recovery device in this utility model Figure 2;

[0030] Figure 3 This is a schematic diagram of the partial structure of the hot air furnace and its heat recovery device in this utility model Figure 1 ;

[0031] Figure 4 This is a schematic diagram of the partial structure of the hot air furnace and its heat recovery device in this utility model Figure 2 .

[0032] Description of labels:

[0033] 1. Hot air furnace;

[0034] 2. Heat recovery assembly; 21. Air supply section; 22. Heat collection section; 221. Heat recovery pipe; 222. Heat recovery fin;

[0035] 3. Air outlet assembly; 31. First heat collection assembly; 311. First heat collection pipe; 312. First connection cover; 32. Second heat collection assembly; 321. Second heat collection pipe; 322. Second connection cover;

[0036] 4. Drainage device; 41. Drainage drive member; 42. Heat collector; 421. Shell; 422. Drainage pipe;

[0037] 5. Shell;

[0038] 6. Air inlet assembly; 61. Air inlet pipe; 62. Air inlet drive component. DETAILED DESCRIPTION

[0039] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

[0040] Please refer to Figures 1-4 A heat recovery device for a hot air stove comprises a hot air stove 1 having a hot air outlet. The heat recovery device includes a heat recovery component 2 and an air outlet component 3. The inlet of the heat recovery component 2 communicates with the hot air outlet of the hot air stove 1. Horizontally, the projected area of the heat recovery component 2 at least partially overlaps with the hot air stove 1. The outlet of the heat recovery component 2 communicates with the air outlet component 3, which is used to transport hot air to the outside. Preferably, both the heat recovery component 2 and the air outlet component 3 are made of metal with good thermal conductivity.

[0041] It can be understood that the present invention further recovers the waste heat in the external space of the hot blast stove 1 by adding a heat recovery component 2 and an air outlet component 3, so that the heat generated by the hot blast stove 1 during combustion is fully utilized, reducing heat loss and improving heat utilization rate.

[0042] In some embodiments, the heat recovery component 2 is at least partially distributed along the axial direction of the hot blast stove 1, and the heat recovery component 2 is arranged adjacent to the hot blast stove 1. Specifically, the distance between the heat recovery component 2 and the outer wall of the hot blast stove 1 should be controlled within 5 cm so that the heat recovery component 2 can fully absorb the heat of the hot blast stove 1 and the heat in the external space of the hot blast stove 1, thereby improving the utilization rate of heat.

[0043] In some embodiments, the heat recovery assembly 2 includes an air supply section 21 and a heat collection section 22. The air supply section 21 is positioned adjacent to the top of the hot blast furnace 1, while the heat collection section 22 is positioned adjacent to the circumferential sidewalls of the hot blast furnace 1. The heat collection section 22 is U-shaped. Both the air supply section 21 and the heat collection section 22 are configured to absorb heat generated by the hot blast furnace 1. The U-shape of the heat collection section 22 allows the heat collection section 22 to fully absorb heat from the space outside the hot blast furnace 1, thereby reducing heat loss.

[0044] In some embodiments, the heat collection section 22 includes a heat recovery tube 221 and at least three heat recovery fins 222. All heat recovery fins 222 are evenly spaced around the circumference of the heat recovery tube 221. The heat recovery fins 222 are provided to conduct heat, expand the heat absorption area, and fully absorb excess heat.

[0045] In some embodiments, a diversion device 4 is provided between the inlet of the air outlet component 3 and the outlet end of the heat recovery component 2 so that the heat flowing out of the hot air furnace 1 passes through the heat recovery component 2 and then enters the air outlet component 3 .

[0046] In some embodiments, the heat recovery device includes a housing 5; the housing 5 is disposed over the hot air stove 1, the heat recovery assembly 2, and the air outlet assembly 3. The housing 5 is configured to reduce heat loss, allowing the heat generated by the hot air stove 1 to be retained within the housing 5, thereby allowing the heat recovery assembly 2 and the air outlet assembly 3 to fully absorb excess heat, thereby reducing heat loss.

[0047] In some embodiments, the drainage device 4 includes a drainage driver 41 and a heat collector 42. The drainage driver 41 is in communication with the heat collector 42, which is in communication with the air outlet assembly 3 and the heat recovery assembly 2. Specifically, the drainage driver 41 is a blower that guides the airflow from the heat recovery assembly 2 to the air outlet assembly 3 for heat collection before being discharged.

[0048] In some embodiments, the heat collector 42 includes a shell 421 and a drainage pipe 422 ; the drainage pipe 422 is tangent to the side wall of the shell 421 , and the air inlet of the drainage pipe 422 is connected to the side wall of the shell 421 .

[0049] In some embodiments, the air outlet assembly 3 includes a first heat collection assembly 31 and a second heat collection assembly 32, which are perpendicular to each other. The first heat collection assembly 31 is located adjacent to the top of the hot air stove 1. The second heat collection assembly 32 extends vertically away from the hot air stove 1. The first and second heat collection assemblies 31 and 32 not only absorb heat from the hot air stove 1 but also combine this heat with heat absorbed by the heat recovery assembly 2, and then deliver the heat to a designated space.

[0050] In some embodiments, the first heat collection assembly 31 includes a first heat collection pipe 311 and at least two first connecting covers 312; the two ends of the first heat collection pipe 311 are respectively connected to a first connecting cover 312; there are multiple first heat collection pipes 311, all of which are parallel to each other and arranged adjacent to each other, and the distribution direction of the first heat collection pipes 311 is parallel to the radial direction of the hot blast furnace 1. The second heat collection assembly 32 includes a second heat collection pipe 321 and a second connecting cover 322, the two ends of the second heat collection pipe 321 are respectively connected to the first connecting cover 312 and the second connecting cover 322, and there are also multiple second heat collection pipes 321, and the distribution direction of the second heat collection pipes 321 is perpendicular to the distribution direction of the first heat collection pipes 311. Preferably, there are sixteen first heat collection pipes 311 and sixteen second heat collection pipes 321, respectively, in order to expand the heat absorption area, thereby fully absorbing the waste heat outside the hot blast furnace 1 and improving energy utilization.

[0051] In some embodiments, an air inlet assembly 6 is further included; the hot air furnace 1 is connected to the outside space through the air inlet assembly 6. The air inlet assembly 6 is provided to provide oxygen for combustion in the hot air furnace 1, and to direct cold air into the hot air furnace 1 for heating and then drive the cold air into the heat recovery assembly 2, thereby driving heat flow.

[0052] The first embodiment of the present invention is:

[0053] A heat recovery device for a hot air furnace 1 having a hot air outlet comprises a heat recovery component 2, an air outlet component 3, and a housing 5. The housing 5 is disposed over the hot air furnace 1, the heat recovery component 2, and the air outlet component 3. The inlet of the heat recovery component 2 communicates with the hot air outlet of the hot air furnace 1. Horizontally, the projected area of the heat recovery component 2 at least partially overlaps with the hot air furnace 1. The outlet of the heat recovery component 2 communicates with the air outlet component 3, and the air outlet component 3 is configured to transport hot air to the outside. Preferably, both the heat recovery component 2 and the air outlet component 3 are made of metal with good thermal conductivity.

[0054] In this embodiment, the heat recovery component 2 includes an air supply section 21 and a heat collection section 22; the air supply section 21 is arranged adjacent to the top of the hot blast stove 1, and the heat collection section 22 is arranged adjacent to the circumferential side wall of the hot blast stove 1, and the heat collection section 22 is U-shaped; part of the heat collection section 22 is distributed along the axial direction of the hot blast stove 1, and the heat recovery component 2 is arranged adjacent to the hot blast stove 1.

[0055] In this embodiment, the heat collection section 22 includes two heat recovery pipes 221 and multiple heat recovery fins 222; all the heat recovery fins 222 are evenly spaced around each heat recovery pipe 221, and the lower ends of the two heat recovery pipes 221 are connected through a U-shaped pipe.

[0056] In this embodiment, a drainage device 4 is provided between the inlet of the air outlet assembly 3 and the outlet of the heat recovery assembly 2. The drainage device 4 includes a drainage driver 41 and a heat collector 42. The drainage driver 41 communicates with the heat collector 42, which in turn communicates with the air outlet assembly 3 and the heat recovery assembly 2, respectively. The heat collector 42 includes a housing 421 and a drainage pipe 422. The drainage pipe 422 is tangent to the sidewall of the housing 421, and the air inlet of the drainage pipe 422 communicates with the sidewall of the housing 421.

[0057] In this embodiment, the air outlet assembly 3 includes a first heat collection assembly 31 and a second heat collection assembly 32, which are perpendicular to each other. The first heat collection assembly 31 is disposed adjacent to the top of the hot blast furnace 1. The second heat collection assembly 32 extends vertically away from the hot blast furnace 1. The first heat collection assembly 31 includes a first heat collection pipe 311 and at least two first connecting covers 312. The first heat collection pipe 311 is connected to a first connecting cover 312 at each end. There are multiple first heat collection pipes 311, all of which are parallel to each other and adjacent to each other. The distribution direction of the first heat collection pipes 311 is parallel to the radial direction of the hot blast furnace 1. The second heat collection assembly 32 includes a second heat collection pipe 321 and a second connecting cover 322. The second heat collection pipe 321 is connected to the first connecting cover 312 and the second connecting cover 322 at each end. There are also multiple second heat collection pipes 321, and the distribution direction of the second heat collection pipes 321 is perpendicular to the distribution direction of the first heat collection pipes 311. Preferably, sixteen first heat collecting tubes 311 and sixteen second heat collecting tubes 321 are provided respectively.

[0058] In this embodiment, an air inlet assembly 6 is further included; the hot air furnace 1 is connected to the outside space through the air inlet assembly 6. Specifically, the air inlet assembly 6 includes an air inlet pipe 61 and an air inlet drive 62. The air inlet drive 62 is connected to the inlet of the air inlet pipe 61, and the outlet of the air inlet pipe 61 is connected to the cold air inlet of the hot air furnace 1.

[0059] The working principle of this utility model is:

[0060] The air inlet component 6 supplies cold air and oxygen required for combustion to the hot air furnace 1. The cold air is heated by the hot air furnace 1 and enters the heat recovery component 2, bringing the heat absorbed by the heat recovery component 2 into the air outlet component 3, and the first heat collection component 31 and the second heat collection component 32 of the air outlet component 3 also absorb part of the waste heat respectively, so that all the heat is collected in the air outlet component 3 and discharged to the space where heat is needed for heating, thereby realizing full utilization of the heat.

[0061] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the description and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A heat recovery device for a hot blast stove, wherein the hot blast stove has a hot blast outlet, characterized in that: The heat recovery device includes a heat recovery component and an air outlet component; The inlet of the heat recovery component is in communication with the hot air outlet of the hot air stove; In the horizontal direction, the projected area of the heat recovery assembly at least partially overlaps with the hot blast stove; The outlet of the heat recovery component is communicated with the air outlet component, and the air outlet component is used to transport hot air to the external space.

2. The heat recovery device for a hot blast stove according to claim 1, characterized in that: The heat recovery component is at least partially distributed along the axial direction of the hot blast stove, and the heat recovery component is arranged adjacent to the hot blast stove.

3. The heat recovery device for a hot blast stove according to claim 2, characterized in that: The heat recovery component includes an air supply section and a heat collection section; The air supply section is arranged adjacent to the top of the hot blast stove, the heat collecting section is arranged adjacent to the circumferential side wall of the hot blast stove, and the heat collecting section is U-shaped.

4. The heat recovery device for a hot blast stove according to claim 3, characterized in that: The heat collection section includes a heat recovery pipe and at least three heat recovery fins; In the circumferential direction of the heat recovery pipe, all the heat recovery fins are distributed at equal intervals.

5. The heat recovery device for a hot blast stove according to claim 1, characterized in that: A flow guide device is provided between the inlet of the air outlet component and the outlet end of the heat recovery component, so that the heat flowing out of the hot air furnace passes through the heat recovery component and then enters the air outlet component.

6. The heat recovery device for a hot blast stove according to claim 5, characterized in that: The drainage device includes a drainage drive and a heat collector; The flow-guiding driving member is in communication with the heat collector, and the heat collector is also in communication with the air outlet assembly and the heat recovery assembly respectively.

7. The heat recovery device for a hot blast stove according to claim 1, characterized in that: The heat recovery device includes a housing; The outer shell is arranged outside the hot air furnace, the heat recovery component and the air outlet component.

8. The heat recovery device for a hot blast stove according to claim 1, characterized in that: The air outlet assembly includes a first heat collecting assembly and a second heat collecting assembly that are perpendicular to each other; The first heat collecting assembly is disposed adjacent to the top of the hot blast stove; In the vertical direction, the second heat collecting assembly is extended in a direction away from the hot air stove.

9. The heat recovery device for a hot blast stove according to claim 8, characterized in that: The first heat collection assembly includes a first heat collection pipe and at least two first connection covers; Both ends of the first heat collecting pipe are respectively connected to the first connecting cover; There are a plurality of the first heat collecting tubes, all of which are parallel to each other and arranged adjacent to each other, and the distribution direction of the first heat collecting tubes is parallel to the radial direction of the hot blast furnace.

10. The heat recovery device for a hot blast stove according to claim 1, characterized in that: Also included is an air intake assembly; The hot air furnace is communicated with the external space through the air inlet assembly.

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