A high-efficiency indirect hot air furnace

Abstract

This application belongs to the field of thermal energy conversion, specifically a high-efficiency indirect hot blast furnace, including a furnace body, air supply pipe, fan, exhaust pipe, outlet pipe, plates, mounting frame, and air guide pipes. The right end of the furnace body passes through and is fixedly connected to the left outer wall of the air supply pipe. The interior of the air supply pipe communicates with the outlet of the furnace body. The air supply pipe is L-shaped. The left side of the air supply pipe passes through and is fixedly connected to the inner wall of the mounting frame. A frame door is hinged to the top of the mounting frame. Plates are arranged inside the mounting frame. The number of air guide pipes is set to four, and all four air guide pipes pass through the inner wall of the plates. This application adopts a method of first moving the plates upwards through a plate removal mechanism after opening the frame door, and then removing the plates from the outside of the air guide pipes. This allows for easy disassembly and assembly of the plates, enabling timely cleaning of the plates and preventing dust accumulation between the plates during use.

Description

Technical Field

[0001] This application belongs to the field of thermal energy conversion, specifically a high-efficiency indirect hot blast stove. Background Technology

[0002] A high-efficiency indirect hot air furnace is an industrial heating device that separates fuel combustion from hot air generation through heat exchange technology. Its core is to use a heat exchanger to transfer the heat generated by combustion to clean air, thereby outputting pollution-free hot air.

[0003] The working principle of a gas-fired indirect hot air furnace is mainly to use a burner to burn fuel to generate high-temperature gas, which then heats the heat exchanger.

[0004] Heat exchangers typically employ a tubular structure, with the combustion chamber at the bottom and the tubular heat exchanger at the top, featuring a multi-pass airflow design for heat exchange with flue gas. However, tubular structures often suffer from low heat transfer efficiency, large structural dimensions, and high costs. On the other hand, plate heat exchangers, due to the small distance between the plates, can easily cause blockages as the flue gas passes through them, affecting performance. Therefore, a high-efficiency indirect hot air furnace needs to be designed to address these issues. Utility Model Content

[0005] The purpose of this application is to address the shortcomings of existing technologies by designing a high-efficiency indirect hot air furnace that uses a plate removal mechanism to remove the plates, allowing the plates to be relatively separated, thus solving the problem of easy blockage between plates in a plate heat exchanger.

[0006] To achieve the above objectives, the following technical solution is adopted:

[0007] A high-efficiency indirect hot air furnace includes a furnace body, an air supply duct, a blower, an exhaust duct, an outlet duct, plates, a mounting frame, and air guide pipes. The right end of the furnace body is connected to the left outer wall of the air supply duct, and the interior of the air supply duct communicates with the air outlet of the furnace body. The air supply duct is L-shaped. The left side of the air supply duct is connected to the inner wall of the mounting frame, and a frame door is hinged to the top of the mounting frame. Plates are arranged inside the mounting frame. There are four air guide pipes, each of which penetrates the inner wall of the plate. Ventilation holes are opened in the inner walls of the four air guide pipes. The outlet end of the blower is connected to the inner wall of the mounting frame, and the outer wall of the outlet duct is connected to the right inner wall of the mounting frame. The outlet end of the air supply duct is connected to the inner wall of the mounting frame, and the outer wall of the exhaust duct is connected to the left inner wall of the mounting frame. A plate removal mechanism is provided on the inner side of the mounting frame.

[0008] Preferably, the outer wall of the plate is fixedly connected with protrusions.

[0009] Preferably, the plate removal mechanism includes a movable plate, the left side of which is slidably connected to the inner wall of the mounting frame, and the inner wall of the movable plate is through and fixedly connected to the left outer wall of the air guide tube.

[0010] Preferably, the mounting frame is provided with a plate positioning assembly inside.

[0011] Preferably, the plate positioning assembly includes a positioning groove, which is formed on the inner walls of the front and rear sides of the mounting frame. The upper end of the positioning groove extends outside the mounting frame, and a limit groove is formed on the inner wall of the mounting frame directly below the positioning groove.

[0012] Preferably, each of the air guide tubes is a hollow columnar structure, and multiple rings of vent holes are formed on the outer wall of the air guide tube along the axial direction. Each ring of the vent hole group contains multiple vent holes, and the vent holes are arranged in a circular array with the axis of the air guide tube as the center.

[0013] Preferably, the inner width of the mounting frame is shorter than the width of the plate, and the sum of the inner width of the mounting frame and twice the depth of the limiting groove is greater than the width of the plate.

[0014] Preferably, the upper side of the movable plate is provided with a sliding groove, the inner wall of the sliding groove is slidably connected to a slider, the top end of the slider is fixedly connected to a protrusion plate, and the bottom end of the slider is elastically connected to the inner wall of the sliding groove by a spring.

[0015] Preferably, the system includes a base plate, the upper surface of which is fixedly connected to the lower surface of the furnace body, the upper surface of which is located on the right side of the furnace body is fixedly connected to the lower surface of the air supply pipe, and a bracket is fixedly connected to the upper surface of the base plate, the upper surface of which is fixedly connected to the lower surface of the mounting frame.

[0016] Compared with the prior art, the beneficial effects of this application are:

[0017] 1. This application adopts a method in which the plate is first moved upward by the plate removal mechanism after the frame door is opened, and then the plate is removed from the outside of the air duct. This makes it easy to disassemble and assemble the plate, so that the plate can be cleaned in time, thereby avoiding the accumulation of dust between the two plates during use.

[0018] 2. This application uses a plate positioning component and a protrusion to ensure that when the plate is disassembled and reinstalled, it can be accurately inserted into the limiting groove through the positioning groove, thereby ensuring that the plate will not be displaced during disassembly and assembly.

[0019] 3. This application uses a combination of spring, raised plate and slider, so that after the frame door is opened, the raised plate and slider can automatically spring up, which makes it easy for the staff to pull the moving plate through the raised plate and move the plate out. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure in this application;

[0021] Figure 2 This is a cross-sectional view of the mounting frame in this application;

[0022] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 This is a split diagram of the mounting frame and its internal structure in this application;

[0024] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0025] Figure 6 This is a schematic diagram showing the disassembled moving plate, plate, and air duct in this application;

[0026] Figure 7 This is a cross-sectional schematic diagram of the mounting frame and its internal structure in this application.

[0027] The components include: 1. Furnace body; 2. Air supply pipe; 3. Support frame; 4. Fan; 5. Exhaust pipe; 6. Outlet pipe; 7. Plate; 8. Mounting frame; 81. Frame door; 9. Air guide pipe; 91. Vent hole; 10. Plate removal mechanism; 71. Protrusion; 101. Moving plate; 102. Slide groove; 103. Slider; 104. Raised plate; 105. Spring; 11. Plate positioning assembly; 111. Positioning groove; 112. Limiting groove; 12. Base plate. Detailed Implementation

[0028] Reference Figures 1-7A high-efficiency indirect hot air furnace includes a furnace body 1, an air supply pipe 2, a fan 4, an exhaust pipe 5, an outlet pipe 6, a plate 7, a mounting frame 8, and a guide pipe 9. The right end of the furnace body 1 is connected to the left outer wall of the air supply pipe 2. The furnace body 1 is the combustion chamber of the hot air furnace. The interior of the air supply pipe 2 is connected to the outlet of the furnace body 1. The air supply pipe 2 is used to transfer the flue gas generated by the furnace body 1 to the mounting frame 8 for heat exchange. The air supply pipe 2 is L-shaped. The left side of the air supply pipe 2 is connected to the inner wall of the mounting frame 8. The mounting frame 8 is the outer shell of a plate radiator. A frame door 81 is hinged to the top of the mounting frame 8. A locking element is provided between the frame door 81 and the mounting frame 8 to fix the frame door 81 relative to the mounting frame 8 after it is closed. The mounting frame 8 contains a plate 7, which is the interior of the plate radiator. The heat dissipation plate has four air ducts 9, each penetrating the inner wall of the plate 7. The air ducts 9 restrict the flow of flue gas and heated clean air. Each of the four air ducts 9 has a vent hole 91 on its inner wall, allowing flue gas or clean air inside the air duct to enter the area between adjacent plates 7. The outlet end of the fan 4 is penetrating and fixedly connected to the inner wall of the mounting frame 8. The fan 4 is used to introduce clean air into the mounting frame 8 for heat exchange. The outer wall of the outlet pipe 6 is penetrating and fixedly connected to the right inner wall of the mounting frame 8. The outlet end of the supply pipe 2 is penetrating and fixedly connected to the inner wall of the mounting frame 8. The outer wall of the exhaust pipe 5 is penetrating and fixedly connected to the left inner wall of the mounting frame 8. A plate removal mechanism 10 is provided on the inner side of the mounting frame 8.

[0029] In this embodiment, during use, the flue gas generated by the furnace body 1 enters the lower right air guide pipe 9 through the air supply pipe 2 and moves along the inner wall of the air guide pipe 9. During the movement, the flue gas also enters the position between the two plates 7 along the ventilation hole 91. At the same time, the fan 4 sends clean air into the interior of the mounting frame 8, so that the approaching air moves along the inner wall of the left air guide pipe 9 and enters the space between the two plates 7 during the movement. The area where the approaching air is located is adjacent to the area where the flue gas is located. That is, the space between the two plates 7 is alternately set with flue gas and clean air, so that the heat of the flue gas is transferred to the clean air in this process. The flue gas passing through this area finally enters the exhaust pipe 5 and is connected to the device for treating the exhaust gas through the exhaust pipe 5. When the equipment has been used for a long time and there is dirt between the two plates 7, the plate removal mechanism 10 removes the plate 7 from the interior of the mounting frame 8 and cleans the removed plate 7.

[0030] As a preferred method, the outer wall of the plate 7 is fixedly connected with protrusions 71, which support the two adjacent plates 7 to ensure that there is no displacement in the middle of the two adjacent plates 7.

[0031] As a preferred embodiment, the plate removal mechanism 10 includes a movable plate 101, which is L-shaped. A sliding groove is provided on the inner wall of the mounting frame 8 near the left side. A sliding block that slides up and down in the sliding groove is provided on the left side of the movable plate 101. The left side of the movable plate 101 is slidably connected to the inner wall of the mounting frame 8. The inner wall of the movable plate 101 is through and fixedly connected to the outer left wall of the air guide pipe 9. By sliding the movable plate 101 to the mounting frame 8, the movable plate 101 can drive the air guide pipe 9 to move upward after moving upward, thereby driving the plate 7 to move upward synchronously with it, achieving the effect of taking the plate 7 out of the mounting frame 8.

[0032] As a preferred method, the mounting frame 8 is provided with a plate positioning component 11, which is used to ensure that the plate 7 can be accurately installed in its original position after reinstallation.

[0033] As a preferred embodiment, the plate positioning assembly 11 includes a positioning groove 111, which is formed on the inner walls of the front and rear sides of the mounting frame 8. The positioning groove 111 is an isosceles trapezoid with the upper side being wider than the lower side. The upper end of the positioning groove 111 extends outside the mounting frame 8. A limiting groove 112 is formed on the inner wall of the mounting frame 8 directly below the positioning groove 111. The width of the limiting groove 112 is the same as the width of the plate 7. By allowing the plate 7 to enter the positioning groove 111 before entering the limiting groove 112, it is ensured that the plate 7 can easily enter the positioning groove 111 even with some positional differences, and then accurately enter the limiting groove 112 under the inclined surface drive of the positioning groove 111.

[0034] As a preferred method, each air duct 9 is a hollow columnar structure. Multiple rings of vent holes are formed on the outer wall of the air duct 9, distributed along the axial direction. The distance between each group of vent holes is twice the distance between two plates 7. Each ring of vent holes contains multiple vent holes 91, which are arranged in a circular array with the axis of the air duct 9 as the center. By setting the position and number of vent holes 91, it is ensured that flue gas and clean air can enter the space between two plates 7 alternately.

[0035] As a preferred method, the inner width of the mounting frame 8 is shorter than the width of the plate 7, and the sum of the inner width of the mounting frame 8 and twice the depth of the limiting groove 112 is greater than the width of the plate 7. By setting the width, it is ensured that the plate 7 can be located on the inner side of the limiting groove 112, thereby ensuring that the plate 7 can be restricted in the left and right directions by the limiting groove 112.

[0036] As a preferred embodiment, a groove 102 is provided on the upper side of the movable plate 101. A slider 103 is slidably connected to the inner wall of the groove 102. A protruding plate 104 is fixedly connected to the top of the slider 103. The bottom end of the slider 103 is elastically connected to the inner wall of the groove 102 by a spring 105. One end of the spring 105 is fixedly connected to the bottom end of the slider 103, and the other end of the spring 105 is fixedly connected to the inner wall of the groove 102.

[0037] As a preferred embodiment, the base plate 12 is included, the upper surface of which is fixedly connected to the lower surface of the furnace body 1. The upper surface of the base plate 12 on the right side of the furnace body 1 is fixedly connected to the lower surface of the air supply pipe 2. A bracket 3 is fixedly connected to the upper surface of the base plate 12. The bracket 3 is used to fix the mounting frame 8 to ensure that it can maintain a stable state with support at the bottom during use. The upper surface of the bracket 3 is fixedly connected to the lower surface of the mounting frame 8.

Claims

1. A high-efficiency indirect hot air furnace, characterized in that, The system includes a furnace body (1), an air supply pipe (2), a blower (4), an exhaust pipe (5), an outlet pipe (6), a plate (7), a mounting frame (8), and a guide pipe (9). The right end of the furnace body (1) is connected to the left outer wall of the air supply pipe (2). The interior of the air supply pipe (2) is connected to the outlet of the furnace body (1). The air supply pipe (2) is L-shaped. The left side of the air supply pipe (2) is connected to the inner wall of the mounting frame (8). A frame door (81) is hinged to the top of the mounting frame (8). The interior of the mounting frame (8) is equipped with a plate (7). The guide pipe (9) The quantity is set to four, and the four air guide pipes (9) all penetrate the inner wall of the plate (7). The inner wall of the four air guide pipes (9) is provided with ventilation holes (91). The air outlet end of the fan (4) penetrates and is fixedly connected to the inner wall of the mounting frame (8). The outer wall of the air outlet pipe (6) penetrates and is fixedly connected to the right inner wall of the mounting frame (8). The air outlet end of the air supply pipe (2) penetrates and is fixedly connected to the inner wall of the mounting frame (8). The outer wall of the exhaust pipe (5) penetrates and is fixedly connected to the left inner wall of the mounting frame (8). The inner side of the mounting frame (8) is provided with a plate removal mechanism (10).

2. The high-efficiency indirect hot blast stove according to claim 1, characterized in that, The outer wall of the plate (7) is fixedly connected with protrusions (71).

3. The high-efficiency indirect hot blast stove according to claim 1, characterized in that, The plate removal mechanism (10) includes a movable plate (101), the left side of which is slidably connected to the inner wall of the mounting frame (8), and the inner wall of the movable plate (101) is through and fixedly connected to the left outer wall of the air guide pipe (9).

4. The high-efficiency indirect hot blast stove according to claim 1, characterized in that, The mounting frame (8) is equipped with a plate positioning assembly (11).

5. A high-efficiency indirect hot blast stove according to claim 4, characterized in that, The plate positioning assembly (11) includes a positioning groove (111), which is formed on the inner walls of the front and rear sides of the mounting frame (8). The upper end of the positioning groove (111) extends to the outside of the mounting frame (8). A limiting groove (112) is formed on the inner wall of the mounting frame (8) directly below the positioning groove (111).

6. A high-efficiency indirect hot blast stove according to claim 1, characterized in that, Each of the air guide tubes (9) is a hollow columnar structure. Multiple rings of vent holes are provided on the outer wall of the air guide tube (9) along the axial direction. Each ring of the vent hole group contains multiple vent holes (91). The vent holes (91) are arranged in a circular array with the axis of the air guide tube (9) as the center.

7. A high-efficiency indirect hot blast stove according to claim 1, characterized in that, The inner width of the mounting frame (8) is shorter than the width of the plate (7), and the sum of the inner width of the mounting frame (8) and twice the depth of the limiting groove (112) is greater than the width of the plate (7).

8. A high-efficiency indirect hot blast stove according to claim 3, characterized in that, The upper side of the movable plate (101) is provided with a sliding groove (102), and a slider (103) is slidably connected to the inner wall of the sliding groove (102). A protruding plate (104) is fixedly connected to the top of the slider (103), and the bottom end of the slider (103) is elastically connected to the inner wall of the sliding groove (102) by a spring (105).

9. A high-efficiency indirect hot blast stove according to claim 1, characterized in that, Includes a base plate (12), the upper surface of which is fixedly connected to the lower surface of the furnace body (1), the upper surface of which is located on the right side of the furnace body (1) is fixedly connected to the lower surface of the air supply pipe (2), and a bracket (3) is fixedly connected to the upper surface of the base plate (12), the upper surface of which is fixedly connected to the lower surface of the mounting frame (8).

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