Energy-saving firewood stove with multiple combustion modes
By combining a fan and a natural air intake device in the design of the wood-burning stove, the problem of existing wood-burning stoves not being able to freely select the combustion mode has been solved, realizing the switching and adjustment of multiple combustion modes, improving ease of use and energy saving.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 陈海
- Filing Date
- 2025-05-08
- Publication Date
- 2026-04-17
AI Technical Summary
Existing wood-burning stoves cannot simultaneously achieve both high-intensity combustion using a blower and natural air intake combustion without a blower, preventing users from freely choosing the combustion mode.
A wood-burning stove with multiple combustion modes was designed, which combines a blower and a natural air intake device. By switching between the blower and the natural air intake device, different combustion modes can be switched and adjusted.
It allows users to select the combustion mode according to their needs, achieving the effects of environmental protection and energy saving, adjustable firepower, and convenient use.
Smart Images

Figure CN224135895U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wood-fired stove technology, and in particular to an energy-saving wood-fired stove with multiple combustion modes. Background Technology
[0002] Currently, wood-burning stoves on the market are mainly divided into high-powered gasification stoves that use a fan and natural-suction gasification stoves that do not use a fan. Each of these products has its own advantages and disadvantages.
[0003] High-powered gasifiers with fans: powerful and fuel-efficient, but require electricity and cannot be used without it; naturally aspirated gasifiers: do not require fans and are easy to move, but the heat is not as powerful.
[0004] However, in the existing technology, it is not possible to combine a high-fire gasification furnace with a blower and a natural aspiration gasification furnace without a blower, so that users can freely choose the combustion mode. Therefore, an energy-saving wood stove with multiple combustion modes is proposed. Utility Model Content
[0005] This invention provides an energy-saving wood-fired stove with multiple combustion modes to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] An energy-saving wood-fired stove with multiple combustion modes includes an outer shell, an inner liner fixedly connected inside the outer shell, a sandwich cavity between the inner liner and the outer shell, a support plate fixedly connected to the side wall of the outer shell, a fan fixedly connected to the upper end of the support plate, the output nozzle of the fan communicating with the sandwich cavity, the upper and lower ends of the inner liner being open, a furnace bridge fixedly connected to the bottom end of the inner liner, multiple through holes being opened on the four sides of the top of the inner liner, and a natural air intake device being provided on the side wall of the outer shell.
[0008] Preferably, the natural air intake device includes a support ring, which is fixedly connected to the outer side wall of the housing. A rotating ring is sleeved on the housing and rotatably connected to the support ring. Two first openings are opened on the side wall of the rotating ring, and two second openings are opened on the side wall of the housing. The second openings and the first openings are at the same horizontal height.
[0009] Preferably, the bottom end of the outer shell is fixedly connected to three support legs, and an ash collection box is fixedly connected inside the three support legs. The ash collection box is located below the furnace bridge.
[0010] Preferably, the inner liner is made of stainless steel.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] This ingenious device combines a blower with a naturally aspirated gasifier, allowing users to select the combustion mode as needed, achieving environmental protection, energy saving, adjustable heat, and ease of use.
[0013] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it according to the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. The specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description
[0014] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:
[0015] Figure 1 This is a three-dimensional structural diagram of an energy-saving wood-burning stove with multiple combustion modes proposed in this utility model;
[0016] Figure 2 This is an exploded structural diagram of an energy-saving wood-fired stove with multiple combustion modes proposed in this utility model;
[0017] Figure 3 This is a cross-sectional structural diagram of an energy-saving wood-fired stove with multiple combustion modes proposed in this utility model.
[0018] The attached diagram lists the components represented by each number as follows:
[0019] 1. Support leg; 2. Ash collection box; 3. Outer shell; 4. First opening; 5. Rotary ring; 6. Inner liner; 7. Through hole; 8. Support ring; 9. Fan; 10. Support plate; 11. Furnace bridge; 12. Second opening. Detailed Implementation
[0020] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described in more detail below by way of example with reference to the accompanying drawings. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.
[0021] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.
[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0023] Please see Figures 1-3 In this embodiment of the utility model, an energy-saving wood stove with multiple combustion modes includes an outer shell 3, an inner liner 6 fixedly connected inside the outer shell 3, the inner liner 6 being made of stainless steel, a sandwich cavity being provided between the inner liner 6 and the outer shell 3, a support plate 10 fixedly connected to the side wall of the outer shell 3, a fan 9 fixedly connected to the upper end of the support plate 10, the output nozzle of the fan 9 communicating with the sandwich cavity, the upper and lower ends of the inner liner 6 being open, a furnace bridge 11 fixedly connected to the bottom end of the inner liner 6, multiple through holes 7 being opened on the four sides of the top of the inner liner 6, and a natural air intake device being provided on the side wall of the outer shell 3.
[0024] The natural air intake device includes a support ring 8, which is fixedly connected to the outer wall of the outer shell 3. A rotating ring 5 is fitted on the outer shell 3 and is rotatably connected to the support ring 8. Two first openings 4 are opened on the side wall of the rotating ring 5, and two second openings 12 are opened on the side wall of the outer shell 3. The second openings 12 and the first openings 4 are at the same horizontal height. The ash produced by the combustion of fuel in the inner liner 6 can fall into the ash collection box 2 below through the furnace bridge 11.
[0025] Three support legs 1 are fixedly connected to the bottom of the outer shell 3. An ash collection box 2 is fixedly connected inside the three support legs 1. The ash collection box 2 is located below the furnace bridge 11. The ash produced by the combustion of fuel in the inner liner 6 can fall into the ash collection box 2 below through the furnace bridge 11.
[0026] The working principle of this utility model is as follows:
[0027] When the natural aspiration mode is required, the rotating ring 5 can be rotated first, so that the two first ports 4 on the rotating ring 5 are connected to the two second ports 12 on the outer shell 3. The fuel is ignited in the inner liner 6. After the fuel burns, the inner liner 6 relies on the negative pressure generated by the combustion in the furnace to generate primary air intake at the bottom of the furnace bridge 11. At the same time, the first ports 4 and the second ports 12 also automatically draw in air and enter the inner liner 6 through the through hole 7 for secondary air intake. The fuel is fully burned through the natural aspiration of primary and secondary air intake. The air intake volume of the second ports 12 can be adjusted by rotating the rotating ring 5, thereby adjusting the firepower.
[0028] When the high-fire combustion mode of the blower is needed, first rotate the rotating ring 5 to block the second port 12. Then start the blower 9. After the blower 9 blows in a strong airflow, it enters the inner liner 6 through the through hole 7. The sufficient air makes the fuel in the inner liner 6 more complete and produces a high-fire mode.
[0029] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.
Claims
1. A multi-mode energy efficient firewood stove comprising a housing (3), characterized in that, The inner liner (6) is fixedly connected inside the outer shell (3). A sandwich cavity is provided between the inner liner (6) and the outer shell (3). A support plate (10) is fixedly connected to the side wall of the outer shell (3). A fan (9) is fixedly connected to the upper end of the support plate (10). The output nozzle of the fan (9) is connected to the sandwich cavity. The upper and lower ends of the inner liner (6) are open. A furnace bridge (11) is fixedly connected to the bottom end of the inner liner (6). Multiple through holes (7) are opened on the four sides of the top of the inner liner (6). A natural air intake device is provided on the side wall of the outer shell (3).
2. A multi-fuel mode energy saving wood-burning stove as claimed in claim 1, characterized in that, The natural air intake device includes a support ring (8), which is fixedly connected to the outer wall of the outer shell (3). A rotating ring (5) is fitted on the outer shell (3) and is rotatably connected to the support ring (8). Two first openings (4) are opened on the side wall of the rotating ring (5), and two second openings (12) are opened on the side wall of the outer shell (3). The second openings (12) and the first openings (4) are at the same horizontal height.
3. The multi-fuel mode energy saving wood-burning stove according to claim 1, characterized in that, The bottom of the outer shell (3) is fixedly connected to three support legs (1), and the three support legs (1) are fixedly connected to ash collection boxes (2), which are located below the furnace bridge (11).
4. The multi-fuel mode energy saving wood-burning stove of claim 1, wherein, The inner liner (6) is made of stainless steel.