Inner fire cover and combustor
By designing multiple sets of flame outlets and air supply channels at different heights in the inner burner cap, the problem of insufficient secondary air supply in the inner burner cap is solved, achieving full combustion of the flame and improving thermal efficiency, thus improving the uniformity of food cooking and the user experience.
Patent Information
- Application Number
- CN202423306504.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2034-12-30
AI Technical Summary
The existing inner burner cap has insufficient secondary air supply, which leads to poor combustion, low flame temperature, and low temperature in the center, resulting in uneven cooking of food and reduced user experience.
Design an inner flame cap with multiple sets of flame outlets at different heights and an air supply channel extending along the height direction. Secondary air is supplied to the highest and second highest flame outlets through the air supply channel to form multiple rings of flame, thereby improving combustion efficiency and thermal efficiency.
It achieves complete combustion of the flame, reduces exhaust emissions, improves thermal efficiency and cooking convenience, and enhances the user experience.
Smart Images
Figure CN223740790U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to gas -cooker technical field especially relates to a kind of inner fire cover and combustor. BACKGROUND
[0002] Most domestic gas stoves are atmospheric burners, also known as partially premixed burners. The working principle is that the gas flows out of the nozzle at a certain flow rate under a certain pressure, enters the ejector pipe, and relies on the ejector action of the gas itself to attract a certain amount of air around it. This part of air is called "primary air". The primary air and gas are mixed in the ejector pipe and the burner mixing chamber, and then flow out through the fire hole for combustion. During combustion, air is drawn from around the flame to aid combustion, and this part of air is called "secondary air". The burner is provided with a fire cover for direct fire and contact with the pot. The fire cover has a fire hole. Gas is ejected outward from the fire hole. After ignition, the gas burns to form a flame. In the prior art, the traditional inner fire cover is generally in the form of a circular ring, and the structure is that the inner fire cover side wall has a plurality of circular fire holes, and the fire hole and the fire cover are integrated.
[0003] Such inner fire cover has the following problems: the flame root is at the side wall of the fire cover, the pot body is usually directly above the inner ring fire cover, the flame contacts the pot body to form a conical "fire wall" from the side wall of the fire cover, the fire wall blocks the entry of external air, the secondary air supply is insufficient, the combustion deteriorates, the flame temperature is low, the center temperature is low, the food in the center of the pot is not easy to cook, the food is not evenly cooked, and the user experience is reduced. SUMMARY
[0004] The present application aims to solve the technical problems of insufficient secondary air supply of the existing inner fire cover, which leads to combustion deterioration, low flame temperature, low center temperature, food in the center of the pot not easy to cook, food not evenly cooked, and reduced user experience.
[0005] In a first aspect, the present application provides an inner fire cover, which mainly includes a cover body having a plurality of groups of fire holes with different heights; the cover body has an air supply channel extending in the height direction, and the air outlet of the air supply channel is located between the highest fire hole and the second highest fire hole.
[0006] As an optional implementation, the cover body includes a first layer body and a second layer body in the height direction, from high to low; the highest fire hole is circumferentially provided in the side wall of the first layer body, and the remaining fire holes are provided in the side wall of the second layer body; in the height direction, the projection of the second layer body covers the projection of the first layer body, and the air outlet of the air supply channel is provided at the top of the second layer body and surrounds the outside of the first layer body.
[0007] As an optional implementation, the inner fire cover further comprises a flow guide groove, which is concave downward and formed on the top of the second layer body, the flow guide groove surrounds the outside of the first layer body, and the air supply passage is communicated with the flow guide groove through the air outlet.
[0008] As an optional implementation, the fire outlet comprises a first fire outlet, a second fire outlet and a third fire outlet with heights decreasing in sequence; the first fire outlet is arranged on the first layer body, and the second fire outlet and the third fire outlet are both arranged on the side wall of the second layer body in the circumferential direction; the diameter of the first fire outlet is smaller than that of the second fire outlet, and the diameter of the second fire outlet is smaller than or equal to that of the third fire outlet.
[0009] As an optional implementation, the second fire outlet and the third fire outlet are staggered in the height direction.
[0010] As an optional implementation, the inner fire cover further comprises a flame stabilizing groove and a flame stabilizing hole arranged in the flame stabilizing groove; in the height direction, the flame stabilizing groove is arranged between the second fire outlet and the third fire outlet.
[0011] As an optional implementation, the cross section of the flow guide groove in the height direction is narrow at the bottom and wide at the top.
[0012] As an optional implementation, the cross section of the flow guide groove in the height direction is V-shaped.
[0013] As an optional implementation, the inner fire cover further comprises an annular groove; the opening of the annular groove faces outward; in the height direction, the annular groove is lower than the lowest fire outlet, the air inlet of the air supply passage is arranged in the annular groove; the transverse cross section area of the air supply passage is smaller than the longitudinal cross section area of the annular groove and the longitudinal cross section area of the flow guide groove.
[0014] In the second aspect, the embodiments of the present application provide a burner, which comprises the inner fire cover in any of the foregoing embodiments.
[0015] The present application provides an inner fire cover and a burner, and the technical solutions provided by the embodiments of the present application at least have the following beneficial effects:
[0016] Through the air supply passage, the air source outside the lower end of the inner fire cover body is continuously supplied to the highest fire outlet and the second highest fire outlet, and the directional supply of the secondary air makes the flame burning of the highest fire outlet and the second highest fire outlet more sufficient and complete, the waste gas generated by the combustion is greatly reduced, the pollution is reduced, at the same time, multiple circles of flames are formed, the combustion load is increased, the thermal efficiency is improved, the cooking is more convenient, and the user experience is improved.
[0017] It should be understood that the general description above and the detailed description below are only exemplary and explanatory and are not restrictive of the application. BRIEF DESCRIPTION OF DRAWINGS
[0018] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the accompanying drawings, in which:
[0019] Figure 1 A structure schematic diagram of an inner fire cover provided by an embodiment of the present application;
[0020] Figure 2 A structure schematic diagram of a longitudinal section of an inner fire cover provided by an embodiment of the present application;
[0021] Figure 3 A structure schematic diagram of a longitudinal section of an inner fire cover provided by another embodiment of the present application;
[0022] Figure 4 A schematic diagram of a gas combustion flame distribution of an inner fire cover provided by an embodiment of the present application.
[0023] Corresponding explanations of the reference signs:
[0024] 1: cover body; 11: first layer body; 12: second layer body;
[0025] 2: fire outlet hole; 21: first fire outlet hole; 22: second fire outlet hole; 23: third fire outlet hole;
[0026] 3: air supply channel;
[0027] 4: flow guide groove;
[0028] 5: flame stabilizing groove;
[0029] 6: flame stabilizing hole;
[0030] 7: annular groove. DETAILED DESCRIPTION
[0031] The present application is described in detail below, and examples of embodiments of the present application are shown in the accompanying drawings, in which the same or similar reference signs represent the same or similar components or components having the same or similar functions throughout. In addition, if a detailed description of known technology is unnecessary for the features of the present application shown, it is omitted. The embodiments described below by reference to the accompanying drawings are exemplary and are for explanation of the present application only, and cannot be interpreted as a limitation of the present application.
[0032] It is to be understood that the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. It is further understood that the terms "comprising," "including," "containing," and "having" and the like, when used in the specification, specify the presence of stated features, elements, and / or components, but do not preclude the presence or addition of one or more other features, elements, components, and / or groups thereof. The term "and / or" includes all combinations of one or more of the associated listed items.
[0033] As shown in the drawings, Figures 1-4 The inner fire cover provided by the embodiment of the present application mainly comprises a cover body 1, which is provided with a plurality of groups of fire outlet holes 2 with different heights; the cover body 1 is provided with an air supply channel 3 extending in the height direction, and the air outlet of the air supply channel 3 is located between the highest fire outlet hole 2 and the second highest fire outlet hole 2.
[0034] In the embodiment, the cover body 1 is arranged on a horizontal plane, and the height direction of the cover body 1 is the vertical direction. The cover body 1 is hollow inside, and the bottom of the cover body 1 is open and the top is closed to form a containing cavity. Each group of fire outlet holes 2 comprises a plurality of hole structures, and the plurality of hole structures of each group of fire outlet holes 2 are located at the same height.
[0035] The air supply channel 3 is arranged on the cover wall of the cover body 1, vertically extends, the air inlet of the air supply channel 3 is located at the bottom end of the air supply channel 3, and the air outlet of the air supply channel 3 is located at the top end of the air supply channel 3. The air supply channel 3 is used to provide air for the highest fire outlet hole 2.
[0036] The inner fire cover provided by the embodiment of the present application is provided with the air supply channel 3, and the air source outside the lower end of the main body of the inner fire cover continuously supplements the highest fire outlet hole 2 and the second highest fire outlet hole 2. The directional supplement of the secondary air makes the flame burning of the highest fire outlet hole 2 and the second highest fire outlet hole 2 more sufficient and complete, greatly reduces the waste gas generated by the burning, reduces pollution, forms multiple circles of flames, increases the burning load, improves the heat efficiency, makes cooking more convenient, and improves the user experience.
[0037] As an optional implementation, the cover body 1 comprises a first layer body 11 and a second layer body 12 arranged in sequence from high to low in the height direction and in a cylindrical shape; the highest fire outlet hole 2 is arranged on the side wall of the first layer body 11 in the circumferential direction, and the remaining fire outlet holes 2 are arranged on the side wall of the second layer body 12; in the height direction, the projection of the second layer body 12 covers the projection of the first layer body 11, and the air outlet of the air supply channel 3 is arranged on the top of the second layer body 12 and surrounds the outside of the first layer body 11.
[0038] Based on the foregoing embodiment, in the embodiment, the first layer body 11 and the second layer body 12 are integrally formed. The inner diameter of the first layer body 11 is smaller than the inner diameter of the second layer body 12. The air supply channel 3 is arranged on the top of the second layer body 12 and surrounds the outside of the first layer body 11, and the air outlet of the air supply channel 3 is close to the highest fire hole 2 and is aligned with the root of the flame jetted from the highest fire hole 2.
[0039] As an optional embodiment, the inner fire cover further comprises a flow guide groove 4, which is concave downward and arranged on the top of the second layer body 12 and surrounds the outside of the first layer body 11, and the air outlet of the air supply channel 3 is communicated with the flow guide groove 4.
[0040] Based on the foregoing embodiment, in the embodiment, the inner fire cover comprises four air supply channels 3, which are uniformly distributed in the circumferential direction. The air outlet of the air supply channel 3 is arranged in the flow guide groove 4, and the air flowing out of the air outlet of the air supply channel 3 flows along the flow guide groove 4 to supply air to all the highest fire holes 2.
[0041] As an optional embodiment, the fire hole 2 comprises a first fire hole 21, a second fire hole 22 and a third fire hole 23 with heights decreasing in sequence; the first fire hole 21 is arranged on the first layer body 11, and the second fire hole 22 and the third fire hole 23 are both arranged on the side wall of the second layer body 12 in the circumferential direction; the diameter of the first fire hole 21 is smaller than the diameter of the second fire hole 22, and the diameter of the second fire hole 22 is smaller than or equal to the diameter of the third fire hole 23.
[0042] Based on the foregoing embodiment, in the embodiment, the gas flows into the accommodating cavity from the bottom of the inner pot cover and flows upward, and the fuel pressure gradually decreases, which is matched with the diameter relationship of the first fire hole 21, the second fire hole 22 and the third fire hole 23, so that the height of the flame formed by the first fire hole 21 is smaller than the height of the flame formed by the second fire hole 22, and the height of the flame formed by the second fire hole 22 is smaller than or equal to the height of the flame formed by the third fire hole 23. The different three-dimensional flame layers with different heights are presented on the bottom of the pot, and the appearance of the fire wall is avoided.
[0043] As an optional embodiment, the second fire hole 22 and the third fire hole 23 are staggered in the height direction.
[0044] By using the above scheme, the uniformity of the flame around the inner fire cover can be improved.
[0045] As an optional embodiment, the inner fire cover further comprises a flame stabilizing groove 5 and a flame stabilizing hole 6 arranged in the flame stabilizing groove 5; in the height direction, the flame stabilizing groove 5 is arranged between the second fire hole 22 and the third fire hole 23.
[0046] Based on the foregoing embodiment, in the present embodiment, a gas supplement passage is arranged in the flame stabilizing groove 5 to communicate with the inner and outer sides of the inner fire cap, and the gas in the inner fire cap flows to the flame stabilizing groove 5 from the gas supplement passage, thereby supplementing the gas near the fire hole, and preventing the flame from being lifted.
[0047] As an optional embodiment, the cross section of the flow guide groove 4 in the height direction is narrow at the bottom and wide at the top.
[0048] By using the above scheme, air diffusion can be achieved, and the air supply effect can be improved.
[0049] In some embodiments, the cross section of the flow guide groove 4 in the height direction is trapezoidal, irregular, etc.
[0050] As an optional embodiment, the cross section of the flow guide groove 4 in the height direction is V-shaped.
[0051] By using the above scheme, the flow guide groove 4 is convenient to process. The air supply passage 3 is arranged at the bottom of the V-shaped air supply passage 3.
[0052] As an optional embodiment, the inner fire cap further comprises an annular groove 7; the opening of the annular groove 7 faces the outer side; in the height direction, the annular groove 7 is lower than the lowest fire hole 2, and the air supply passage 3 is arranged in the annular groove 7; the cross section area of the air supply passage 3 in the transverse direction is smaller than the cross section area of the annular groove 7 in the longitudinal direction, and also smaller than the cross section area of the flow guide groove 4 in the longitudinal direction.
[0053] Based on the foregoing embodiment, in the present embodiment, the cross section of the air supply passage 3 in the transverse direction is circular, the cross section area of the annular groove 7 in the longitudinal direction is rectangular or trapezoidal, if it is trapezoidal, the large end of the trapezoidal is on the outside, and the small end is on the inside. The cross section of the flow guide groove 4 in the longitudinal direction is V-shaped. By using the above size relationship of the cross section area, the throttling and expansion effect is generated, and the combustion effect is further improved.
[0054] Based on the same inventive concept, the present application provides a burner comprising the inner fire cap of any one of the foregoing embodiments.
[0055] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0056] The terms "first", "second", etc. are used only for the purpose of description, and should not be understood as indicating or implying relative importance or a specific number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified.
[0057] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0058] In the description of the present application, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.
[0059] The above is only part of the embodiments of the present application, it should be pointed out that, for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can also be made, which should be regarded as the protection scope of the present application.
Claims
1. An inner fire cap characterized in that, The utility model relates to a kind of inner fire cover, including: Cover (1) is opened with multiple groups of different height fire hole (2); The cover (1) has air supply channel (3) extending along height direction, and the air outlet of the air supply channel (3) is located between the highest fire hole (2) and the second highest fire hole (2).
2. The inner fire door according to claim 1, wherein, The cover (1) includes first layer body (11) and second layer body (12) in order from high to low along height direction, which are cylindrical; The highest fire hole (2) is opened in the side wall of the first layer body (11) along the circumferential direction, and the remaining fire holes (2) are opened in the side wall of the second layer body (12);In the height direction, the projection of the second layer body (12) covers the projection of the first layer body (11), and the air outlet of the air supply channel (3) is opened at the top of the second layer body (12) and surrounds the outside of the first layer body (11).
3. The inner fire door according to claim 2, wherein, Further comprising: The air supply channel (3) is communicated with the guide groove (4).
4. The inner fire door according to claim 2, wherein, The fire hole (2) includes first fire hole (21), second fire hole (22) and third fire hole (23) in order from high to low in height;The first fire hole (21) is opened in the first layer body (11), and the second fire hole (22) and the third fire hole (23) are both opened in the side wall of the second layer body (12) along the circumferential direction; The aperture of the first fire hole (21) is smaller than the aperture of the second fire hole (22), and the aperture of the second fire hole (22) is smaller than or equal to the aperture of the third fire hole (23).
5. The inner fire door according to claim 4, wherein, The second fire hole (22) and the third fire hole (23) are staggered in the height direction.
6. The inner fire door according to claim 5, wherein, Further comprising stable flame groove (5) and stable flame hole (6) opened in the stable flame groove (5); In the height direction, the stable flame groove (5) is opened between the second fire hole (22) and the third fire hole (23).
7. The inner fire door according to claim 3, wherein, The cross section of the guide groove (4) in the height direction is narrow at the bottom and wide at the top.
8. The inner fire door according to claim 7, wherein, The cross section of the guide groove (4) in the height direction is V-shaped.
9. The inner fire door according to claim 3, wherein, Further comprising annular groove (7); The opening of the annular groove (7) faces outward, and in the height direction, the annular groove (7) is lower than the lowest fire hole (2), and the air inlet of the air supply channel (3) is opened in the annular groove (7); The transverse cross-sectional area of the air supply channel (3) is smaller than the longitudinal cross-sectional area of the annular groove (7) and the longitudinal cross-sectional area of the guide groove (4).
10. A burner characterized by, The utility model relates to a kind of inner fire cover, including: The inner fire cover according to any one of claims 1-9.