Air return furnace
By introducing automatic dust cleaning structures of dust-shaking nets and dust-falling doors into the return air furnace, the problem of incomplete dust cleaning of the existing return air furnace is solved, and an automated and efficient dust cleaning effect is achieved.
Patent Information
- Application Number
- CN202422231316.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-12
AI Technical Summary
The cleaning structure of the existing return air furnace is not thorough enough, resulting in low efficiency in removing ashes after combustion.
An automatic dust removal structure including a dust-shaking net and a dust-falling door was designed. The dust-shaking net was driven to swing left and right through the rotating rod to make the furnace ash fall into the left or right gray-shaking door. The combination of torsion spring and wire rope was used to achieve automatic opening and reset of the dust-shaking door, realizing automatic dust removal.
Improve the efficiency of ash cleaning, ensure that the furnace ash automatically shakes off, reduce the need for manual cleaning, and improve the degree of automation of ash cleaning.
Smart Images
Figure CN223090706U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of stoves, in particular to a return air stove. Background Art
[0002] As a traditional household heating device, the return air stove has long been deeply popularized among thousands of households. The existing return air stove has a single structure, and the ashes generated after fuel combustion are not completely removed. Therefore, it is necessary to improve the ash cleaning structure of the existing return air stove. Content of the Utility Model
[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, an embodiment of the utility model provides a return air stove, which is characterized by comprising a stove body and a furnace chamber. A control board is installed on the stove body. The furnace chamber is arranged inside the stove body, and an ash dropping port is arranged on the furnace chamber. The ash dropping port is located at the bottom of the furnace chamber. A dust shaking net is rotatably installed at the ash dropping port. A rotating rod is fixed on the dust shaking net. The rotating rod passes through the stove body, and a front connecting piece and a rear connecting piece are welded on the rotating rod. A left ash dropping door and a right ash dropping door are rotatably installed below the dust shaking net. A left rotating shaft and a right rotating shaft are fixed on the stove body. The left ash dropping door is rotatably installed on the left rotating shaft, and the right ash dropping door is rotatably installed on the right rotating shaft. Torsion springs are installed on both the left rotating shaft and the right rotating shaft. Two first connecting feet are arranged on the left ash dropping door, and the two first connecting feet are respectively connected with the front connecting piece and the rear connecting piece through steel wires. Two second connecting feet are arranged on the right ash dropping door, and the two second connecting feet are respectively connected with the front connecting piece and the rear connecting piece through steel wires.
[0004] The utility model has at least the following beneficial effects:
[0005] 1. The furnace ash generated after combustion will fall on the dust shaking net. By rotating the rotating rod left and right, the dust shaking net swings left and right, and the furnace ash on the dust shaking net is shaken onto the left ash dropping door or the right ash dropping door.
[0006] 2. When the dust shaking net swings to the left, the two second connecting feet on the right ash dropping door are pulled by the steel wire rope, so that the right ash dropping door rotates downward around the right rotating shaft, the right ash dropping door is opened, and the torsion spring is compressed and deformed, so that the furnace ash on the right ash dropping door can fall. When the pulling of the steel wire rope on the right ash dropping door is released, the right ash dropping door resets under the action of the torsion spring.
[0007] 3. When the ash shaking net swings towards the left, the two first connecting feet on the left ash discharge door are pulled by the steel wire rope, causing the left ash discharge door to rotate downward with the right rotating shaft as the axis, opening the left ash discharge door, compressing the torsion spring to deform, enabling the furnace ash on the left ash discharge door to fall. When the pulling of the steel wire rope on the left ash discharge door is released, under the action of the torsion spring, the left ash discharge door resets; thus, the automatic ash cleaning of the return air furnace is realized through the above structure, improving the ash cleaning efficiency.
[0008] According to some embodiments of the present invention, the furnace chamber includes an outer cylinder, an inner cylinder, and a furnace core. The inner cylinder is installed inside the outer cylinder, and the furnace core is installed in the inner cylinder. A combustion chamber is formed inside the furnace core, and the bottom of the combustion chamber is the ash discharge port. A first space is formed between the outer cylinder and the inner cylinder, and the first space is communicated with the smoke exhaust assembly. The lower part of the inner cavity of the inner cylinder is communicated with the air supply assembly.
[0009] According to some embodiments of the present invention, a first inner ring plate is arranged inside the inner cylinder for supporting the furnace core. A horn ring plate is arranged on the first inner ring plate, and the small opening of the horn ring plate is the ash discharge port.
[0010] According to some embodiments of the present invention, it further includes a smoke exhaust assembly. The smoke exhaust assembly is installed on the furnace body and is communicated with the furnace chamber. The smoke exhaust assembly includes a smoke bag and a smoke exhaust pipe. The smoke bag is fixed on the side wall of the outer cylinder. An air inlet is opened on the side part of the smoke bag, and a smoke exhaust port is opened on the top. The air inlet is communicated with the first space, and the smoke exhaust pipe is fixedly installed on the smoke exhaust port.
[0011] According to some embodiments of the present invention, it further includes an air supply assembly. The air supply assembly is installed on the furnace body and is controlled and connected to the control board. The control board is used to control the air supply volume of the air supply assembly. The air supply assembly is used to supply air to the furnace chamber. The air supply assembly includes an air duct pipe, a windproof air guiding cover, and a fan. The air duct pipe is in a Z shape, and an air inlet and an air outlet are respectively arranged on the air duct pipe. The fan is installed at the air inlet, and the fan is controlled and connected to the control board. The air outlet is located below the ash discharge port.
[0012] According to some embodiments of the present invention, it further includes an ash-proof air guiding cover, and the ash-proof air guiding cover is installed on the air outlet.
[0013] According to some embodiments of the present invention, it further includes a battery box. The fan is installed in the battery box, and the fan is electrically connected to a battery.
[0014] According to some embodiments of the present invention, a heat insulation net is sleeved on the smoke exhaust pipe.
[0015] According to some embodiments of the present utility model, a sealed box is installed inside the furnace body. A top opening is formed at the top of the sealed box, and the top opening communicates with the inner cavity of the furnace chamber. An ash receiving drawer is movably installed inside the sealed box.
[0016] According to some embodiments of the present utility model, a feeding port is further provided on the furnace chamber. The feeding port is located at the upper part of the outer wall of the furnace chamber, and a feeding door is installed on the feeding port.
[0017] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:
[0019] Figure 1 is a schematic diagram of the whole of an embodiment of the present utility model;
[0020] Figure 2 is a schematic cross-sectional view of the whole of an embodiment of the present utility model Figure 1 ;
[0021] Figure 3 is a schematic cross-sectional view of the whole of an embodiment of the present utility model Figure 2 ;
[0022] Figure 4 is a schematic diagram of the furnace chamber of an embodiment of the present utility model;
[0023] Figure 5 is a schematic diagram of the left ash discharge door and the right ash discharge door being closed in an embodiment of the present utility model;
[0024] Figure 6 is a schematic diagram of the left ash discharge door being closed and the right ash discharge door being opened in an embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0025] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and should not be construed as limiting the present utility model.
[0026] In the description of the present utility model, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., it is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.
[0027] In the description of the present utility model, the meaning of "a plurality of" is more than two, and understandings such as greater than, less than, exceeding, etc. do not include the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.
[0028] In the description of the present utility model, unless otherwise clearly defined, terms such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.
[0029] Referring to Figures 1 to 3 , a return air furnace includes a furnace body 100 and a furnace chamber 200. A control board 500 is installed on the furnace body 100. The furnace chamber 200 is arranged inside the furnace body 100. An ash discharge port 201 is arranged on the furnace chamber 200, and the ash discharge port 201 is located at the bottom of the furnace chamber 200. A dust shaking net 600 is rotatably installed at the ash discharge port 201. A rotating rod 610 is fixed on the dust shaking net 600. The rotating rod 610 passes through the furnace body 100. A front connecting piece 611 and a rear connecting piece 612 are welded on the rotating rod 610. Below the dust shaking net 600, a left ash discharge door 620 and a right ash discharge door 630 are rotatably installed. A left rotating shaft 110 and a right rotating shaft 120 are fixed on the furnace body 100. The left ash discharge door 620 is rotatably installed on the left rotating shaft 110, and the right ash discharge door 630 is rotatably installed on the right rotating shaft 120. Torsion springs 601 are installed on both the left rotating shaft 110 and the right rotating shaft 120. Two first connecting feet 621 are arranged on the left ash discharge door 620, and the two first connecting feet 621 are respectively connected to the front connecting piece 611 and the rear connecting piece 612 through steel wires. Two second connecting feet 631 are arranged on the right ash discharge door 630, and the two second connecting feet 631 are respectively connected to the front connecting piece 611 and the rear connecting piece 612 through steel wires.
[0030] Referring to Figure 5 , 6 As shown in
[0031] Secondly, when the ash shaking net 600 swings to the left, the two second connecting feet 631 on the right ash discharge door 630 are pulled by the steel wire rope, causing the right ash discharge door 630 to rotate downward with the right rotating shaft 120 as the axis, opening the right ash discharge door 630, and causing the torsion spring 601 to be compressed and deformed, enabling the furnace ash on the right ash discharge door 630 to fall. When the pulling of the steel wire rope on the right ash discharge door 630 is released, under the action of the torsion spring 601, the right ash discharge door 630 resets;
[0032] Thirdly, when the ash shaking net 600 swings, the two first connecting feet 621 on the left ash discharge door 620 are pulled by the steel wire rope, causing the left ash discharge door 620 to rotate downward with the right rotating shaft 120 as the axis, opening the left ash discharge door 620, and causing the torsion spring 601 to be compressed and deformed, enabling the furnace ash on the left ash discharge door 620 to fall. When the pulling of the steel wire rope on the left ash discharge door 620 is released, under the action of the torsion spring 601, the left ash discharge door 620 resets; Therefore, through the above structure, the automatic ash cleaning of the return air furnace is realized, and the ash cleaning efficiency is improved.
[0033] Air is supplied into the furnace chamber 200 through the air supply component 400, and at the same time, the air supply volume of the air supply component 400 is adjusted through the control panel to adjust the combustion degree of the fuel, so as to obtain different fire temperatures and apply them to different usage scenarios.
[0034] Refer to Figures 2 to 4 As shown, the furnace chamber 200 includes an outer cylinder 210, an inner cylinder 220, and a furnace core 230. The inner cylinder 220 is installed in the outer cylinder 210, and the furnace core 230 is installed in the inner cylinder 220. The inner cavity of the furnace core 230 forms a combustion chamber 202, and the bottom of the combustion chamber 202 is an ash discharge port 201. A first space 203 is formed between the outer cylinder 210 and the inner cylinder 220. The furnace core 230 is used for heat preservation. The flue gas generated after the fuel burns enters the first space 203 through the opening at the top of the inner cylinder 220, and then enters the smoke exhaust component 300 from the first space 203, and the smoke exhaust component 300 discharges the flue gas. The lower part of the inner cavity of the inner cylinder 220 communicates with the air supply component 400, so that the air supply component 400 supplies air into the furnace core 230 from the bottom of the inner cylinder 220.
[0035] Refer to Figure 2 As shown, a first inner ring plate 221 is arranged in the inner cylinder 220. The first inner ring plate 221 is used to support the furnace core 230, and a horn ring plate 222 is arranged on the first inner ring plate 221. The small opening of the horn ring plate 222 is the ash discharge port 201.
[0036] Refer to Figure 2 As shown, the smoke exhaust component 300 includes a smoke bag 310 and a smoke exhaust pipe 320. The smoke bag 310 is fixed on the side wall of the outer cylinder 210. An air inlet 311 is opened on the side of the smoke bag 310, and a smoke exhaust port 312 is opened on the top of the smoke bag 310. The air inlet 311 communicates with the first space 203, and the smoke exhaust pipe 320 is fixedly installed on the smoke exhaust port 312.
[0037] Referring to Figure 2 As shown, the air supply assembly 400 includes an air duct 410, a windproof air guide cover 420, and a fan 430. The air duct 410 is in a Z shape. An air inlet 411 and an air outlet 412 are respectively provided on the air duct 410. The fan 430 is installed at the air inlet 411. The fan 430 is controlledly connected to a control board 500. The rotation speed of the fan 430 is controlled by the control board 500, thereby increasing the air volume sent in.
[0038] Since the air outlet 412 is located below the ash fall opening 201, in order to prevent furnace ash from falling into the air duct 410, an ash-proof air guide cover 440 is installed on the air outlet 412.
[0039] To facilitate power supply to the fan 430, the fan 430 is electrically connected to a battery. Both the fan 430 and the battery are installed in a battery box 450.
[0040] During use, in order to prevent the user from being scalded by accidentally touching the smoke exhaust pipe 320, a heat-insulating net 321 is sleeved on the smoke exhaust pipe 320.
[0041] Referring to Figure 2 As shown, a sealed box 700 is installed in the furnace body 100. A top opening is provided at the top of the sealed box 700. The top opening communicates with the inner cavity of the furnace chamber 200. A ash receiving drawer 710 is movably installed in the sealed box 700. The ash receiving drawer 710 is used to receive the shaken-off furnace ash. At the same time, the sealed box 700 ensures that the furnace ash will not spill out, avoiding environmental pollution caused by furnace ash.
[0042] Referring to Figure 1 、 2 As shown, in order to facilitate the input of fuels such as firewood and coal into the furnace chamber 200, a feeding port 240 is further provided on the furnace chamber 200. The feeding port 240 is located at the upper part of the outer wall of the furnace chamber 200. A feeding door 250 is installed on the feeding port 240. The feeding port 240 is closed by the feeding door 250.
[0043] In the description of this specification, the description referring to terms such as "some embodiments" or "it is conceivable that" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.
[0044] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art to which it pertains, various changes can be made without departing from the gist of the present invention.
Claims
1. A return air furnace, characterized in that, It includes a furnace body (100) and a furnace chamber (200). A control panel (500) is installed on the furnace body (100). The furnace chamber (200) is arranged inside the furnace body (100). An ash discharge opening (201) is provided on the furnace chamber (200), and the ash discharge opening (201) is located at the bottom of the furnace chamber (200). A vibrating ash screen (600) is rotatably installed at the ash discharge opening (201). A rotating rod (610) is fixed on the vibrating ash screen (600). The rotating rod (610) passes through the furnace body (100). A front connecting piece (611) and a rear connecting piece (612) are welded on the rotating rod (610). A left ash discharge door (620) and a right ash discharge door (630) are rotatably installed below the vibrating ash screen (600). A left rotating shaft (110) and a right rotating shaft (120) are fixed on the furnace body (100). The left ash discharge door (620) is rotatably installed on the left rotating shaft (110), and the right ash discharge door (630) is rotatably installed on the right rotating shaft (120). Torsion springs (601) are installed on both the left rotating shaft (110) and the right rotating shaft (120). Two first connecting feet (621) are provided on the left ash discharge door (620), and the two first connecting feet (621) are respectively connected to the front connecting piece (611) and the rear connecting piece (612) through steel wires. Two second connecting feet (631) are provided on the right ash discharge door (630), and the two second connecting feet (631) are respectively connected to the front connecting piece (611) and the rear connecting piece (612) through steel wires.
2. The updraft furnace according to claim 1, wherein, The furnace chamber (200) includes an outer cylinder (210), an inner cylinder (220), and a furnace core (230). The inner cylinder (220) is installed inside the outer cylinder (210), and the furnace core (230) is installed in the inner cylinder (220). A combustion chamber (202) is formed inside the furnace core (230). The bottom of the combustion chamber (202) is the ash discharge opening (201). A first space (203) is formed between the outer cylinder (210) and the inner cylinder (220), and the first space (203) is communicated with a smoke exhaust assembly (300). The lower part of the inner cavity of the inner cylinder (220) is communicated with an air supply assembly (400).
3. The updraft furnace according to claim 2, characterized in that, A first inner ring plate (221) is arranged inside the inner cylinder (220). The first inner ring plate (221) is used to support the furnace core (230). A horn ring plate (222) is arranged on the first inner ring plate (221), and the small opening of the horn ring plate (222) is the ash discharge opening (201).
4. A return air furnace according to claim 2, characterized in that, The smoke exhaust assembly (300) is installed on the furnace body (100). The smoke exhaust assembly (300) communicates with the furnace chamber (200). The smoke exhaust assembly (300) includes a smoke bag (310) and a smoke exhaust pipe (320). The smoke bag (310) is fixed on the side wall of the outer cylinder (210). An air inlet (311) is formed in the side part of the smoke bag (310), and a smoke outlet (312) is formed in the top of the smoke bag (310). The air inlet (311) communicates with the first space (203), and the smoke exhaust pipe (320) is fixedly installed on the smoke outlet (312).
5. The updraft furnace according to claim 2, characterized in that, The air supply assembly (400) is installed on the furnace body (100). The air supply assembly (400) is controlled and connected to the control board (500). The control board (500) is used to control the air supply volume of the air supply assembly (400). The air supply assembly (400) is used to supply air to the furnace chamber (200). The air supply assembly (400) includes an air duct pipe (410), a windproof air guide cover (420), and a fan (430). The air duct pipe (410) is in a Z shape. An air inlet (411) and an air outlet (412) are respectively arranged on the air duct pipe (410). The fan (430) is installed at the air inlet (411). The fan (430) is controlled and connected to the control board (500). The air outlet (412) is located below the ash discharge port (201).
6. The updraft furnace according to claim 5, wherein, It further includes an ash-proof air guide cover (440). The ash-proof air guide cover (440) is installed on the air outlet (412).
7. The updraft furnace according to claim 5, wherein It further includes a battery box (450). The fan (430) is installed in the battery box (450). The fan (430) is electrically connected to a battery.
8. A return air furnace according to claim 4, characterized in that, A heat insulation net (321) is sleeved on the smoke exhaust pipe (320).
9. The updraft furnace according to claim 1, characterized in that, A sealed box (700) is installed in the furnace body (100). A top opening is formed in the top of the sealed box (700). The top opening communicates with the inner cavity of the furnace chamber (200). An ash receiving drawer (710) is movably installed in the sealed box (700).
10. A return air furnace according to claim 1, characterized in that, A feeding port (240) is further arranged on the furnace chamber (200). The feeding port (240) is located at the upper part of the outer wall of the furnace chamber (200). A feeding door (250) is installed on the feeding port (240).