Air inducing device of heating furnace

Abstract

The utility model provides an air inducing device of a heating furnace, and belongs to the technical field of heating furnaces. In order to solve the problem that combustion is insufficient due to the fact that the air inducing amount of the heating furnace is small, the air inducing device of the heating furnace comprises a shell, a draught fan is arranged in the shell, and a fan cover is arranged on the side, corresponding to an air outlet of the draught fan, of the shell; the extending direction of the fan cover is perpendicular to the air outlet direction of the fan, the two ends of the fan cover are communicated, and the fan cover is used for leading air outside the heating furnace into the heating furnace. An air outlet of the fan is connected with a bent pipe, one end of the bent pipe extends into the fan cover, the air outlet direction of the bent pipe is parallel to the extending direction of the fan cover, a one-way valve assembly is further arranged at the end, extending into the fan cover, of the bent pipe, and the one-way valve assembly controls air to enter the fan cover from the bent pipe in a one-way mode. The fan cover is matched with the fan, so that the air induction amount is increased, combustion in the heating furnace is sufficient, the heating efficiency is improved, and dense smoke is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of fire-heating stoves, and in particular to a draft device for a fire-heating stove. Background Art

[0002] A fire stove is a device that uses fuel combustion to provide heating. A large amount of oxygen is required to ensure that the fuel burns more completely. Traditional fire stoves are usually equipped with fans to induce air, but the amount of air induced is limited, resulting in incomplete combustion of the fuel, slow heating of the stove, and a large amount of thick smoke, among other low combustion efficiency issues. Utility Model Content

[0003] The purpose of this application is to solve the problem of insufficient combustion caused by low air intake in existing stoves. Therefore, this application provides a stove air intake device that uses a hood and a fan to increase the air intake, thereby ensuring sufficient combustion in the stove, improving heating efficiency, and reducing smoke.

[0004] The embodiment of the present application provides a draft device for a stove, comprising a housing, a fan disposed in the housing, and a wind shield disposed on a side of the housing corresponding to an air outlet of the fan;

[0005] The extension direction of the wind cover is perpendicular to the air outlet direction of the fan, and both ends of the wind cover are connected. The wind cover is used to introduce the air outside the stove into the stove;

[0006] The air outlet of the fan is connected to a curved pipe, one end of which extends into the wind hood, and the air outlet direction of the curved pipe is parallel to the extension direction of the wind hood. A one-way valve assembly is also provided at the end of the curved pipe extending into the wind hood, and the one-way valve assembly controls the gas to enter the wind hood from the curved pipe in one direction.

[0007] By adopting the above technical solution, the fan is matched with the hood, that is, the air outlet of the fan is guided into the hood through a curved pipe, and the flow velocity at the air outlet of the curved pipe is large and the pressure is small, so that a large amount of external air enters through the opening at one end of the hood and is guided into the stove through the hood, thereby increasing the amount of induced air, allowing the stove to burn fully, improving the heating efficiency, and reducing thick smoke, etc.; and, the air outlet direction of the curved pipe is parallel to the extension direction of the hood, which improves the smoothness of the airflow in the hood, thereby reducing noise; at the same time, the one-way opening of the curved pipe is achieved through the one-way valve assembly to prevent external airflow or debris from flowing back into the fan, thereby protecting the fan and extending the service life of the device.

[0008] In some embodiments, the one-way valve assembly includes a baffle and a mounting plate, the mounting plate is arranged on the end of the curved pipe extending into the wind hood through fasteners, the baffle is rotatably connected to the mounting plate, and a torsion spring is arranged between the two, the torsion spring applies a torsional force to the baffle so that the baffle has a tendency to cover the end face of the curved pipe extending into the wind hood.

[0009] By adopting the above technical solution, the baffle cooperates with the torsion spring to achieve that when the fan is turned on, the airflow pushes the baffle to open the bent pipe, and when the fan is turned off, the baffle closes the bent pipe under the action of the torsion spring. The structure is simple, reliable and low in cost.

[0010] In some embodiments, the housing includes a first housing panel and a second housing panel;

[0011] The first shell plate includes a first side plate and a second side plate whose edges intersect perpendicularly.

[0012] The second housing plate includes two side plates arranged opposite to each other and an air inlet plate arranged between the two side plates, the air inlet plate is provided with a plurality of ventilation holes, and the air inlet of the fan is arranged toward the air inlet plate;

[0013] The ends of the two side panels facing away from the air inlet plate and the ends facing away from the wind hood are both bent inward with folded edges, and multiple folded edges are connected to the corresponding first side panel or second side panel through fasteners, and the end faces of the two side panels close to the wind hood are in contact with the outer surface of the wind hood.

[0014] By adopting the above technical solution, the first shell plate is L-shaped as a whole, and the second shell plate is U-shaped as a whole. The assembly of the two improves the strength and stability of the shell. Moreover, no matter whether the fan is fixed to the first shell plate or the second shell plate, after one of the shell plates is removed, a larger area of ​​the fan can be exposed, thereby facilitating maintenance.

[0015] In some embodiments, a fixing plate is also provided in the outer shell, which covers the fan outlet and is provided with a through hole adapted to the bent pipe inlet, and the bent pipe is connected to the through hole of the fixing plate; the two sides of the fixing plate are bent and extended to form two opposite side walls, and the two side walls are respectively attached to and connected to the air inlet plate and the first side panel, and the edges of the two side walls are flush with the corresponding edges of the air inlet plate or the first side panel, and are connected to the wind cover.

[0016] By adopting the above technical solution, the fan and the elbow are connected through the fixed plate, which improves the connection stability between the two; and the two side walls of the fixed plate are respectively attached to and connected to the air inlet plate and the first side plate, which improves the overall strength of the device.

[0017] In some embodiments, the bent pipe includes a first straight pipe, a connecting bent pipe, and a second straight pipe that are detachably connected in sequence. One end of the first straight pipe is connected to the fan outlet, and the other end extends into the air hood.

[0018] The above technical solution facilitates disassembly and assembly of the bent pipe and the wind hood through the first straight pipe and the connecting bent pipe.

[0019] In some embodiments, the fan is a stepless speed-regulating brushless DC fan.

[0020] By adopting the above technical solution, the characteristics of the stepless speed regulation DC brushless fan, such as large air output, long life, low noise, relatively low price and light weight, are utilized to reduce the cost of the device, ensure reliable operation and reduce operating noise.

[0021] In some embodiments, the cross-sections of the curved pipe and the wind hood are both circular, and the wind hood is a straight pipe of equal diameter.

[0022] In some embodiments, the wind shield is a telescopic tube and is telescopic along its extension direction.

[0023] Other features and corresponding beneficial effects of the present application are described in the latter part of the specification, and it should be understood that at least some of the beneficial effects become obvious from the description in the specification of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of an embodiment of the present application;

[0025] Figure 2 This is an exploded diagram of an embodiment of the present application;

[0026] Figure 3 Schematic diagram of the structure of the fan in the embodiment of the present application.

[0027] Description of reference numerals:

[0028] 1. Housing; 11. First side panel; 12. Second side panel; 13. Side panel; 131. Folding edge; 14. Air inlet plate; 141. Ventilation hole; 15. Fixing plate; 151. Side wall;

[0029] 2. Fan;

[0030] 3. Bend pipe; 31. First straight pipe; 32. Connecting bend pipe; 33. Second straight pipe;

[0031] 4. Wind hood;

[0032] 5. Check valve assembly; 51. Baffle; 52. Mounting plate; 53. Screw; 54. Nut. DETAILED DESCRIPTION

[0033] The following specific embodiments illustrate the implementation of the present application. Those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Although the description of the present application will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this application are limited to this implementation. On the contrary, the purpose of introducing the application in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present application. In order to provide an in-depth understanding of the present application, the following description will contain many specific details. The present application can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present application, some specific details will be omitted in the description. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other unless there is a conflict.

[0034] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0035] In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting this application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the invention of this application, unless otherwise specified, "multiple" means two or more. Unless otherwise specified and limited, the terms "mounted", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] See Figure 1-3 , Figure 1 This is a schematic structural diagram of an embodiment of the present application; Figure 2 This is an exploded diagram of an embodiment of the present application; Figure 3 Schematic diagram of the structure of the fan 2 in the embodiment of the present application.

[0037] An embodiment of the present application provides a draft device for a heating stove, comprising a housing 1 , a fan 2 being arranged inside the housing 1 , and a wind hood 4 being arranged on a side of the housing 1 corresponding to an air outlet of the fan 2 .

[0038] The extension direction of the air cover 4 is perpendicular to the air outlet direction of the fan 2, and both ends of the air cover 4 are connected, so that the air cover 4 can introduce the external air of the heating furnace into the heating furnace.

[0039] The air outlet of the fan 2 is connected to a curved pipe 3 , one end of which extends into the air cover 4 , and the air outlet direction of the curved pipe 3 is parallel to the extension direction of the air cover 4 .

[0040] This method utilizes a hood 4 in conjunction with the fan 2, specifically by directing the fan 2's exhaust air into the hood 4 via the curved pipe 3. The high velocity and low pressure at the outlet of the curved pipe 3 allow a large amount of external air to enter through the opening at one end of the hood 4 and be directed into the oven through the hood 4. This increases the amount of induced air, ensuring sufficient combustion within the oven, improving heating efficiency, and reducing smoke. Furthermore, the direction of the air outlet from the curved pipe 3 is parallel to the extension direction of the hood 4, improving the smoothness of the airflow within the hood 4 and reducing noise.

[0041] In one embodiment, a one-way valve assembly 5 is further provided at one end of the curved pipe 3 extending into the wind hood 4. The one-way valve assembly 5 controls the gas to enter the wind hood 4 from the curved pipe 3 in one direction, that is, the curved pipe 3 is opened in one direction, thereby preventing external airflow or debris from flowing back into the fan 2, thereby protecting the fan 2 and extending the service life of the device.

[0042] In one embodiment, the one-way valve assembly 5 includes a baffle 51 and a mounting plate 52. The mounting plate 52 is fastened to the end of the curved pipe 3 extending into the hood 4. The baffle 51 and the mounting plate 52 are rotatably connected, and a torsion spring is disposed therebetween. The torsion spring applies a torsional force to the baffle 51, causing the baffle 51 to tend to cover the end face of the curved pipe 3 extending into the hood 4. When the fan 2 is turned on, the airflow pushes the baffle 51 to open the curved pipe 3. When the fan 2 is turned off, the baffle 51 closes the curved pipe 3 under the action of the torsion spring. This structure is simple, reliable, and low in cost. The fasteners can be screws 53 and nuts 54, providing a reliable connection and easy disassembly and maintenance.

[0043] In one embodiment, the housing 1 includes a first housing plate and a second housing plate.

[0044] The first outer shell plate includes a first side plate 11 and a second side plate 12 whose edges intersect perpendicularly, that is, the first outer shell plate is L-shaped as a whole.

[0045] The second outer shell plate includes two side plates 13 arranged opposite to each other and an air inlet plate 14 arranged between the two side plates 13 , that is, the second outer shell plate is U-shaped as a whole.

[0046] The air inlet plate 14 is provided with a plurality of ventilation holes 141 , and the air inlet of the fan 2 is arranged toward the air inlet plate 14 to quickly and stably absorb air.

[0047] The ends of the two side panels 13 facing away from the air inlet plate 14 and the ends facing away from the wind cover 4 are both bent inward to form folded edges 131. The multiple folded edges 131 are connected to the corresponding first side panel 11 or second side panel 12 through fasteners.

[0048] In this manner, the strength and stability of the housing 1 are improved by assembling the L-shaped first housing plate and the U-shaped second housing plate. Moreover, regardless of whether the fan 2 is fixed to the first housing plate or the second housing plate, after one of the housing plates is removed, a larger area of ​​the fan 2 can be exposed, thereby facilitating maintenance.

[0049] The end surfaces of the two side panels 13 close to the wind shield 4 are fitted with the outer surface of the wind shield 4 to improve the overall aesthetics. For example, when the wind shield 4 is circular, the end surfaces of the two side panels 13 corresponding to the ends are adapted arc-shaped surfaces.

[0050] In one embodiment, a fixing plate 15 is further provided in the casing 1, which covers the air outlet of the fan 2 and is provided with a through hole adapted to the air inlet of the bend pipe 3. The bend pipe 3 is connected to the through hole of the fixing plate 15, and the fan 2 and the bend pipe 3 are connected through the fixing plate 15, thereby improving the connection stability between the two.

[0051] Preferably, the two sides of the fixing plate 15 are bent and extended to form two opposite side walls 151, one of the two side walls 151 is attached to and connected to the air inlet plate 14, and the other is attached to and connected to the first side plate 11, which can improve the connection stability between the fixing plate 15 and the outer casing 1, thereby further improving the connection stability between the fan 2 and the bent pipe 3.

[0052] It should also be noted that the fan 2 is usually flat, and correspondingly, the casing 1 is flat, which results in weak strength of the edges of the air inlet plate 14 and the first side panel 11. Therefore, the edges of the air inlet plate 14 and the first side panel 11 can be reinforced by the two side walls 151 of the fixing plate 15, thereby improving the overall strength of the device.

[0053] Furthermore, the edges of the two side walls 151 are flush with the edges of the corresponding air inlet plates 14 or the first side plates 11 and are connected to the air cover 4, thereby improving the overall aesthetics of the device.

[0054] In a specific embodiment, the outer surface of the air cover 4 is welded to the two side walls 151 of the fixing plate 15 to achieve the connection between the air cover 4 and the housing 1 .

[0055] In one embodiment, the bent pipe 3 includes a first straight pipe 31, a connecting bent pipe 32, and a second straight pipe 33 that are detachably connected in sequence. One end of the first straight pipe 31 is connected to the air outlet of the fan 2, and the other end extends into the wind hood 4, and is connected to the second straight pipe 33 through the connecting bent pipe 32 to change the wind direction. At the same time, the structure facilitates disassembly and assembly through the first straight pipe 31 and the connecting bent pipe 32, thereby realizing disassembly and assembly of the bent pipe 3 and the wind hood 4.

[0056] In one embodiment, the fan 2 is a stepless speed-regulating DC brushless fan 2, thereby utilizing the characteristics of the stepless speed-regulating DC brushless fan 2, such as large air output, long life, low noise, relatively low price and light weight, to reduce the cost of the device, ensure reliable operation and reduce operating noise.

[0057] It is understandable that the stepless speed-regulating DC brushless fan 2 is usually used in conjunction with a power adapter, and stepless speed regulation is achieved through the adapter.

[0058] In one embodiment, the cross-sections of the curved pipe 3 and the wind cover 4 are both circular, and the wind cover 4 is a straight pipe of equal diameter, which can ensure the air intake and reduce noise.

[0059] In one embodiment, the air hood 4 is a telescopic tube and is telescopic along its extension direction, so as to facilitate adaptation to ovens of different heights, thereby improving the versatility and flexibility of the device.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A draft device for a stove, characterized in that: The housing comprises a fan, wherein the housing is provided with a fan cover on one side of the housing corresponding to the air outlet of the fan; The extension direction of the wind cover is perpendicular to the air outlet direction of the fan, and both ends of the wind cover are connected. The wind cover is used to introduce the air outside the stove into the stove; The air outlet of the fan is connected to a curved pipe, one end of which extends into the wind hood, and the air outlet direction of the curved pipe is parallel to the extension direction of the wind hood. A one-way valve assembly is also provided at the end of the curved pipe extending into the wind hood, and the one-way valve assembly controls the gas to enter the wind hood from the curved pipe in one direction.

2. The draft device of the heating stove according to claim 1, characterized in that: The one-way valve assembly includes a baffle and a mounting plate. The mounting plate is arranged on the end of the curved pipe extending into the wind hood through fasteners. The baffle is rotatably connected to the mounting plate, and a torsion spring is arranged between the two. The torsion spring applies a torsional force to the baffle so that the baffle has a tendency to cover the end face of the curved pipe extending into the wind hood.

3. The draft device of the heating stove according to claim 1, characterized in that: The housing includes a first housing plate and a second housing plate; The first shell plate includes a first side plate and a second side plate whose edges intersect perpendicularly. The second housing plate includes two side plates arranged opposite to each other and an air inlet plate arranged between the two side plates, the air inlet plate is provided with a plurality of ventilation holes, and the air inlet of the fan is arranged toward the air inlet plate; The ends of the two side panels facing away from the air inlet plate and the ends facing away from the wind hood are both bent inward with folded edges, and multiple folded edges are connected to the corresponding first side panel or second side panel through fasteners, and the end faces of the two side panels close to the wind hood are in contact with the outer surface of the wind hood.

4. The draft device of the heating stove according to claim 3, characterized in that: A fixing plate is also provided in the outer shell, which covers the fan outlet and is provided with a through hole adapted to the bent pipe inlet, and the bent pipe is connected to the through hole of the fixing plate; the two sides of the fixing plate are bent and extended to form two opposite side walls, and the two side walls are respectively attached to and connected to the air inlet plate and the first side panel, and the edges of the two side walls are flush with the corresponding edges of the air inlet plate or the first side panel, and are connected to the wind hood.

5. The draft device of the heating stove according to claim 1, characterized in that: The bent pipe includes a first straight pipe, a connecting bent pipe and a second straight pipe that are detachably connected in sequence. One end of the first straight pipe is connected to the air outlet of the fan, and the other end extends into the air hood.

6. The draft device of the heating stove according to claim 1, characterized in that: The fan is a brushless DC fan with stepless speed regulation.

7. The draft device of the heating stove according to claim 1, characterized in that: The cross sections of the curved pipe and the wind cover are both circular, and the wind cover is a straight pipe of equal diameter.

8. The draft device of the heating stove according to claim 1, characterized in that: The wind cover is a telescopic tube and is telescopic along its extending direction.

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