Full-premixing stove
By adopting a spiral gas flow channel and blower design in the gas stove, the problem of uneven mixing between gas and air is solved, and more complete and uniform combustion is achieved, which improves combustion efficiency and reduces the generation of harmful gases, achieving energy-saving and environmentally friendly effects.
Patent Information
- Application Number
- CN202422135020.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-08-30
AI Technical Summary
In existing gas stoves, the gas and air are not mixed uniformly enough, which affects the thermal efficiency and produces more harmful gases such as NOx and CO, resulting in air and environmental pollution.
The design of a fully premixed stove includes a spiral gas flow channel and a blower. The combustion gas and air are mixed in the gas flow channel to extend the length of the air flow path and achieve more full mixing.
Through more complete and uniform combustion, the combustion efficiency is improved, the production of NOx and CO is reduced, pollution is reduced, and the energy-saving and environmentally friendly effect is achieved.
Smart Images
Figure CN222978184U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gas cookers, in particular to a full premix cooker. Background Art
[0002] Gas cookers can generate heat by burning combustible gases such as natural gas, which can be used for, but not limited to, cooking. Combustible gases need oxygen to burn, so a mixing structure needs to be set to mix combustible gases with oxygen (or air).
[0003] Some existing gas stoves adopt an atmospheric premixing structure, which consists of a nozzle, an ejector tube and a burner head. The gas is ejected from the nozzle, and primary air is sucked into the ejector tube by the ejection effect. After the gas and air are mixed, they are ejected and burned through the fire holes on the burner head.
[0004] The defects of existing gas stoves include: the gas and air are not mixed evenly, which affects the thermal efficiency of the gas stove, and produces more harmful gases such as NOx and CO, which easily cause air pollution and environmental pollution. Utility Model Content
[0005] The utility model aims to provide a fully premixed stove, which solves the problem of uneven mixing of gas and air during use of the existing stoves, and makes combustion more complete and uniform.
[0006] To achieve this purpose, the utility model adopts the following technical solutions:
[0007] A full premix stove comprises: a blower for conveying air in a set direction; and a base, wherein a gas flow channel and a gas inlet are arranged in a connected manner, wherein the gas flow channel is spiral-shaped, the gas inlet is connected to the outer wall surface of the base, and the gas flow channel spirally extends from the gas inlet toward the center of the base, and the combustion gas and the air from the blower can be mixed in the gas flow channel.
[0008] In one of the preferred embodiments, the base further includes an outlet baffle having at least two air outlet holes, and a mixing chamber is formed between the outlet baffle and the gas flow channel, so that the combustion gas and air mixture in the gas flow channel can reach the air outlet holes through the mixing chamber.
[0009] In one preferred embodiment, the base includes a block-shaped base body, and in a cross section along the axis OO direction of the base body, the gas flow channel penetrates both side end surfaces of the base body, and the top end of the gas flow channel is connected to the mixing chamber.
[0010] In one of the preferred embodiments, the base includes a block-shaped base body, and in a cross section along a direction perpendicular to an axis OO of the base body, the gas flow channel is in a symmetrical spiral shape.
[0011] In one of the preferred embodiments, the full-premix stove also includes an air distribution member arranged between the blower and the base, the air distribution inlet of the air distribution member is connected to the outlet end of the blower, and the air distribution outlet of the air distribution member is connected to the gas flow channel, and the air from the blower can enter the gas flow channel through the air distribution member and mix with the combustion gas.
[0012] In one of the preferred embodiments, the full premix cooker further comprises a burner, wherein the burner is connected to the air flow outlet end of the base, and the combustion gas and air mixed in the gas flow channel can enter the burner.
[0013] In one of the preferred embodiments, at least two air flow holes are provided on the burner, and the air flow holes extend along the flow direction of the combustion gas and air mixture.
[0014] In one preferred embodiment, all of the air flow holes are evenly distributed on the burner.
[0015] In one of the preferred embodiments, the full premix cooker further includes a heat preservation cavity, and the heat preservation cavity is sleeved on the outer side of the base.
[0016] In one of the preferred embodiments, the full premix cooker further comprises a heat insulating sleeve, and the heat insulating sleeve is arranged on the outside of the base and located on the inside of the heat preservation cavity.
[0017] The fully premixed stove disclosed by the utility model comprises a base, on which a spiral gas flow passage is provided, the gas flow passage spirally extending from a gas inlet toward the center of the base, the spiral gas flow passage prolongs the length of the gas flow path, the combustion gas and the air from the blower can be in contact for a longer time in the gas flow passage, and the combustion of the combustion gas and the air is fully achieved, and the combustion is performed after the mixing, so that the combustion is more complete and uniform, and the combustion efficiency is higher; the energy utilization rate of the combustion gas is higher, the generation of harmful gases such as NOx and CO is reduced, and energy saving and environmental protection are achieved. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a cross-sectional view of a full premix cooker provided in a specific embodiment of the utility model;
[0019] Figure 2 It is a structural schematic diagram of a blower provided in a specific embodiment of the utility model;
[0020] Figure 3 It is a cross-sectional view of a base provided by a specific embodiment of the utility model;
[0021] Figure 4 It is a structural schematic diagram of the air distribution member provided in a specific embodiment of the utility model;
[0022] Figure 5 It is a structural schematic diagram of a burner provided in a specific embodiment of the utility model.
[0023] In the figure:
[0024] 1. Blower; 2. Base; 3. Air distribution member; 4. Burner; 5. Insulation chamber; 6. Insulation sleeve; 11. Fan air inlet; 12. Fan air outlet; 21. Gas flow channel; 22. Gas inlet; 23. Outlet baffle; 24. Air outlet; 25. Mixing chamber; 26. Base body; 31. Air distribution inlet; 32. Air distribution outlet; 41. Air flow hole. DETAILED DESCRIPTION
[0025] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model. Therefore, the utility model is not limited by the specific implementation methods disclosed below.
[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0028] In the present utility model, unless otherwise clearly defined and limited, the terms "installed", "connected", "linked", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0029] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher horizontal level than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower horizontal level than the second feature.
[0030] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manner.
[0031] This embodiment discloses a fully premixed cooking stove, as Figure 1 shown. The fully premixed cooking stove includes a blower 1 and a base 2. The blower 1 is disposed on one side of the fully premixed cooking stove. The blower 1 is used to convey air in a set direction, and in this embodiment, the set direction is the direction where the base 2 is located.
[0032] As Figure 1 and Figure 2 shown, the blower 1 includes a blower air inlet 11 and a blower air outlet 12 that are connected and communicated. The blower air inlet 11 is communicated with the external space of the cooking stove to suck the surrounding air into the blower 1; the blower air outlet 12 faces the position where the base 2 is located, and the air sucked into the blower 1 can be discharged from the blower air outlet 12 for sufficient mixing with the combustion gas.
[0033] As Figure 1 and Figure 3As shown in the figure, a gas flow channel 21 and a gas inlet 22 that are connected and communicate with each other are provided inside the base 2. Among them, the gas inlet 22 communicates with the outer wall surface of the base 2, and combustion gas can enter the fully premixed cooking stove through the gas inlet 22; the gas flow channel 21 is spiral, and the gas flow channel 21 spirally extends from the gas inlet 22 towards the center of the base 2.
[0034] The spiral gas flow channel 21 extends the length of the gas flow path, enabling the combustion gas and the air from the blower 1 to come into contact for a longer time in the gas flow channel 21, achieving full mixing of the combustion gas and the air. After mixing, combustion occurs, making the combustion more complete and uniform, and the combustion efficiency higher; the energy utilization rate of the combustion gas is higher, reducing the generation of harmful gases such as NOx and CO, and being energy-saving and environmentally friendly.
[0035] On the basis of the above structure, the base 2 further includes an outlet baffle 23, and at least two air holes 24 are provided on the outlet baffle 23. A mixing chamber 25 is formed between the outlet baffle 23 and the gas flow channel 21, and the combustion gas and air mixture in the gas flow channel 21 can be further mixed in the mixing chamber 25, making the combustion gas and air mix more evenly. After further mixing is completed in the mixing chamber 25, the combustion gas and air mixture reaches the air holes 24, and then leaves the base 2 through the air holes 24.
[0036] The specific formation method of the gas flow channel 21 is not limited, as long as it can extend the length of the gas flow channel and make the combustion gas and air mix more evenly. In this embodiment, the base 2 includes a block-shaped base main body 26. In the cross-section along the axis O-O direction of the base main body 26, the gas flow channel 21 penetrates through both end faces of the base main body 26, and the top end of the gas flow channel 21 communicates with the mixing chamber 25.
[0037] After the gas flow channel 21 is opened, the structure of the base main body 26 is similar to a Swiss roll. Since the gas flow channel 21 is a continuous groove-shaped structure, the base main body 26 after grooving is also a continuous structure, and the base main body 26 will not be broken and separated due to the opening of the gas flow channel 21. Figure 3 For the cross-sectional view of the base 2, a piece of structure at the center of the base main body 26 seems to be separated from the whole, only because the cross-section position crosses the end of the gas flow channel 21, resulting in a visual effect. In fact, a piece of structure at the center of the base main body 26 is connected to other structures of the base main body 26.
[0038] In order to make the combustion gas and air mix more evenly, the base 2 includes a block-shaped base main body 26. In the cross-section along the direction perpendicular to the axis O-O of the base main body 26, the gas flow channel 21 is in a symmetric spiral shape.
[0039] Such as Figure 1 and Figure 4As shown in the figure, the fully premixed cooking stove further includes a air distribution component 3 disposed between the blower 1 and the base 2. The air distribution component 3 is in a cylindrical structure, and the extending direction of its axis is the same as the flowing direction of the air sent out by the blower 1. The air inlet 31 of the air distribution component 3 is communicated with the outlet end of the blower 1, and the air outlet 32 of the air distribution component 3 is communicated with the gas flow channel 21. The air from the blower 1 can enter the gas flow channel 21 through the air distribution component 3 and be mixed with the combustion gas.
[0040] The setting of the air distribution component 3 increases the distance between the blower 1 and the base 2, extends the path length of the gas flow, makes the air distribution more uniform, and lays a foundation for the sufficient mixing of the subsequent combustion gas and air. The axial length of the air distribution component 3 is not specifically limited and can be determined according to actual needs. The longer the axial length of the air distribution component 3, the more uniform the air flow passing through it; the shorter the axial length of the air distribution component 3, the smaller the overall structural volume, which is beneficial to the miniaturization of the cooking stove.
[0041] The specific connection relationship between the air distribution component 3 and the blower 1, as well as between the air distribution component 3 and the base 2 is not limited. The air distribution component 3 can be welded or bonded to the blower 1, and / or the air distribution component 3 can be welded or bonded to the base 2 to improve the stability of the overall structure; it can also be just that the blower 1, the air distribution component 3 and the base 2 are abutted against each other in sequence, which is convenient for installation and has low cost.
[0042] As Figure 1 and Figure 5 shown in the figure, the fully premixed cooking stove further includes a burner 4. The burner 4 is communicated with the air flow outlet end of the base 2, and the combustion gas and air that are mixed in the gas flow channel 21 can enter the burner 4. Specifically, the burner 4 is disposed outside the outlet baffle 23. The combustion gas and air in the mixing chamber 25 are fully mixed and then enter the burner 4 through the air holes 24, and efficient flameless combustion is carried out in the burner 4, with high combustion efficiency.
[0043] At least two air flow holes 41 are provided on the burner 4, and the air flow holes 41 extend along the flowing direction of the combustion gas and air mixture. In order to improve the uniformity of combustion, all the air flow holes 41 are evenly distributed on the burner 4.
[0044] In this embodiment, the burner 4 is set in a porous medium form and can realize flameless combustion. The mixture of the combustion gas and air will generate violent disturbance when flowing through the plurality of air flow holes 41, strengthening the heat transfer, making the temperature in the combustion area tend to be uniform, maintaining a relatively stable temperature gradient, and thus improving the stability of combustion.
[0045] On the basis of the above structure, as Figure 1As shown in the figure, the fully premixed cooker further includes a heat preservation cavity 5. The heat preservation cavity 5 is sleeved outside the base 2, which can reduce the loss of combustion heat. The air distribution member 3 can be fixedly connected to the heat preservation cavity 5, so that the air distribution member 3 and the heat preservation cavity 5 form an integral structure, and the installation of the air distribution member 3 is more stable.
[0046] The specific shape of the heat preservation cavity 5 is not limited, as long as it can surround the side of the base 2. In this embodiment, the heat preservation cavity 5 is in a barrel shape, and a through hole is opened at the bottom of the barrel for the air flow sent out by the blower 1 to pass through. The air distribution member 3 is connected to the edge of the opening at the bottom of the barrel, which is convenient for processing.
[0047] In order to further enhance the heat preservation ability, the fully premixed cooker further includes a heat insulation sleeve 6. The heat insulation sleeve 6 is sleeved outside the base 2 and located inside the heat preservation cavity 5, which can effectively block the loss of combustion heat. The specific material for preparing the heat insulation sleeve 6 is not limited, and any material with low heat conduction efficiency and convenient for processing can be used.
[0048] Note that the above is only the preferred embodiment of the present invention and the technical principles applied. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described here. Various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.
Claims
1. Full premix cooker, characterized in that: include: A blower (1) for conveying air in a set direction; as well as, A base (2) is provided with a connected gas flow channel (21) and a gas inlet (22) inside, the gas flow channel (21) is spiral-shaped, the gas inlet (22) is connected to the outer wall of the base (2), the gas flow channel (21) extends spirally from the gas inlet (22) to the center of the base (2), and the combustion gas and the air from the blower (1) can be mixed in the gas flow channel (21).
2. The full premix cooker according to claim 1, characterized in that: The base (2) further comprises an outlet baffle (23), on which at least two air outlet holes (24) are arranged, and a mixing chamber (25) is formed between the outlet baffle (23) and the gas flow channel (21), so that a mixture of combustion gas and air in the gas flow channel (21) can reach the air outlet holes (24) through the mixing chamber (25).
3. The full premix cooker according to claim 2, characterized in that: The base (2) comprises a block-shaped base body (26); in a cross section along the axis OO direction of the base body (26), the gas flow channel (21) penetrates both side end surfaces of the base body (26); and the top end of the gas flow channel (21) is connected to the mixing chamber (25).
4. The full premix cooker according to claim 1, characterized in that: The base (2) comprises a block-shaped base body (26), and in a cross section along a direction perpendicular to an axis OO of the base body (26), the gas flow channel (21) is in a symmetrical spiral shape.
5. The full premix cooker according to any one of claims 1 to 4, characterized in that: The full premix stove further comprises an air distribution member (3) arranged between the blower (1) and the base (2); an air distribution inlet (31) of the air distribution member (3) is connected to the outlet end of the blower (1); an air distribution outlet (32) of the air distribution member (3) is connected to the gas flow channel (21); air from the blower (1) can enter the gas flow channel (21) through the air distribution member (3) and mix with the combustion gas.
6. The full premix cooker according to any one of claims 1 to 4, characterized in that: The full premix stove also includes a burner (4), the burner (4) being connected to the air flow outlet end of the base (2), and the combustion gas and air mixed in the gas flow channel (21) can enter the burner (4).
7. The full premix cooker according to claim 6, characterized in that: The burner (4) is provided with at least two gas flow holes (41), and the gas flow holes (41) extend along the flow direction of the combustion gas and air mixture.
8. The full premix cooker according to claim 7, characterized in that: All of the air flow holes (41) are evenly distributed on the burner (4).
9. The full premix cooker according to any one of claims 1 to 4, characterized in that: The full premix stove also includes a heat preservation chamber (5), and the heat preservation chamber (5) is sleeved on the outside of the base (2).
10. The full premix cooker according to claim 9, characterized in that: The full premix cooker further comprises a heat insulating sleeve (6), wherein the heat insulating sleeve (6) is sleeved on the outside of the base (2) and located on the inside of the heat preservation cavity (5).