gas stove

Abstract

The embodiment of the present application provides a gas stove, comprising: a stove base; an outer fire cover connected to the stove base; an inner fire cover connected to the stove base and located on the inner side of the outer fire cover, the inner fire cover comprising an air inlet opening and an ignition air outlet corresponding to an ignition sensing needle; an air baffle provided on the inner side of the inner fire cover to divide the cavity of the inner fire cover into a first zone and a second zone, the air baffle being used to decelerate a portion of the mixed gas of gas and air flowing into the second zone through the air inlet opening and entering the first zone to form a smooth mixed gas flow. In the embodiment of the present application, the mixed gas of gas and air flowing into the second zone flows toward the air baffle, and under the blocking and rebounding action of the air baffle, the gas is decelerated and a smooth mixed gas flow is formed, at least a portion of the mixed gas flows out from the ignition air outlet and is ignited and burned by the ignition sensing needle located on the outer side of the inner fire cover, forming a stable inner ring flame, thereby avoiding unstable phenomena such as flame separation or flameout after ignition.

Description

Technical Field

[0001] The present invention relates to the technical field of gas stoves, in particular to a gas stove. Background Art

[0002] Nowadays, household gas stoves usually have a double-ring fire structure. The mixture of gas and air flows out of the inner fire cover and the outer fire cover respectively, and then ignites and burns, forming an inner ring flame and an outer ring flame respectively. Usually, the ignition sensing needle is set corresponding to the inner fire cover to ignite the gas to form an inner ring flame.

[0003] However, the inner ring flame is prone to flame instability, which can cause incomplete combustion, excessive carbon monoxide content in the flue gas, poor ignition, and flameout after ignition. Summary of the Invention

[0004] In view of the shortcomings of the existing methods, the present application provides a gas stove to solve the technical problem of unstable flame easily caused by the inner ring flame in the existing technology.

[0005] An embodiment of the present application provides a gas stove, comprising: a stove base; an outer fire cover connected to the stove base; an inner fire cover connected to the stove base and located on the inner side of the outer fire cover, the inner fire cover comprising an air inlet opening and an ignition air outlet corresponding to an ignition sensing needle; an air baffle arranged on the inner side of the inner fire cover to divide the cavity of the inner fire cover into a first zone and a second zone, the air baffle being used to decelerate a portion of the mixed gas of gas and air flowing into the second zone through the air inlet opening into the first zone to form a smooth mixed gas flow.

[0006] As an optional embodiment, the inner fire cover includes a top wall and a side wall extending along the outer circumference of the top wall away from the top wall, the air inlet opening is opened on the opposite side of the top wall, and the ignition outlet hole is arranged on the side wall; wherein, the air baffle is fixed to the top wall, and the distance between the air baffle and the air inlet opening is less than or equal to the distance between the ignition outlet hole and the air inlet opening.

[0007] As an optional embodiment, the air baffle component includes an air baffle main board, a first air baffle side plate and a second air baffle side plate; wherein, the first air baffle side plate and the second air baffle side plate are respectively fixed at an angle to the opposite sides of the air baffle main board, so that part of the mixed gas of gas and air flowing toward the air baffle main board flows along the first air baffle side plate and the second air baffle side plate toward the ignition outlet.

[0008] As an optional embodiment, the outer periphery of the top wall is further provided with an edge protrusion; wherein, the edge protrusion and the top wall are arranged to form a liquid collection recess for collecting liquid overflowing from the heated stove, the side wall is located on the inner side of the edge protrusion and has a gap with the edge protrusion, and the edge protrusion has a guide portion for guiding the liquid in the liquid collection recess to flow out and flow down along the edge protrusion.

[0009] As an optional embodiment, the side wall is provided with first air outlet holes distributed along the circumferential direction, and the side wall is also provided with a first air outlet slit opening outward; wherein, the first air outlet slit is connected to the first air outlet hole, and the first air outlet hole faces the side wall, and the mixed gas of gas and air flowing out of the first air outlet hole flows toward the side wall to change the flow direction and flow out from the first air outlet slit.

[0010] As an optional embodiment, a second air outlet hole distributed along the circumferential direction is opened in the middle portion of the top wall for heating the middle area of ​​the heated cooktop.

[0011] As an optional embodiment, the inner fire cover also includes: a top cover, which is arranged on the second air outlet and forms a second air outlet gap with the top wall; wherein, the second air outlet gap is connected to the second air outlet, and the second air outlet faces the top cover, and the mixed gas of gas and air flowing out of the ignition air outlet flows toward the top cover to change the flow direction and flow out from the second air outlet gap.

[0012] As an optional embodiment, the stove base includes a base and an air distributor arranged on the inner side of the base, and a plurality of external fire air inlet channels are formed between the base and the air distributor. An air baffle is provided at the outlet of each external fire air inlet channel, and a limited flow hole is provided on each air baffle to reduce the flow rate of the mixed gas of fuel gas and air.

[0013] As an optional embodiment, a first connecting hole and a second connecting hole are provided on the outer fire cover, and a fire transfer gap is provided on the outer fire cover, extending from the inner side of the outer fire cover toward the outer side of the outer fire cover; wherein, the first connecting hole and the second connecting hole are both connected to the fire transfer gap and the outer fire air inlet channel, and the first connecting hole and the second connecting hole are arranged at an angle to reduce the speed of the gas flowing through the fire transfer gap.

[0014] As an optional embodiment, the outer fire cover is provided with a third air outlet hole distributed along the circumferential direction, and the outer fire cover is also provided with a third air outlet slit opening outward; wherein, the third air outlet slit is connected to the third air outlet hole, and the third air outlet hole faces the outer fire cover, and the mixed gas of gas and air flowing out of the third air outlet hole flows toward the outer fire cover to change the flow direction and flow out from the third air outlet slit.

[0015] The present application provides a gas stove. The technical solutions provided by the embodiments of the present application bring at least the following beneficial effects:

[0016] Part of the mixed gas of gas and air flowing into the second zone flows toward the gas baffle, and under the blocking, rebound and guiding action of the gas baffle, the speed is reduced and a smooth mixed gas flow is formed. At least part of the mixed gas flows out from the ignition outlet and is ignited by the ignition sensing needle located on the outside of the inner fire cover, forming a stable inner ring flame, avoiding adverse phenomena such as excessive carbon monoxide content in the flue gas caused by incomplete combustion, poor ignition and flameout after ignition, thereby improving the heating efficiency.

[0017] A liquid collecting recess is provided on the top of the inner fire cover for collecting liquid overflowing from the heated stove. After entering the liquid collecting recess, the liquid can flow out of the liquid collecting recess along the guide surface and flow down along the edge protrusion to stay away from the air outlet structure on the side wall, thereby avoiding blockage of the air outlet structure and instability of the flame.

[0018] The air baffle and flow limiting hole set at the outlet of the outer fire air inlet channel can reduce the flow velocity of the gas and air mixture at this location and reduce the uneven height of the main flame of the outer ring fire.

[0019] The first connecting hole and the second connecting hole increase the distance between the gas and the fire transfer seam, thereby reducing the flow rate of the gas through the fire transfer seam and preventing the flame at the fire transfer seam from leaving the flame. At the same time, it solves the problem of poor rigidity of the outer fire cover caused by the existing fire transfer seam directly cutting through the outer fire cover.

[0020] The middle portion of the top wall of the inner fire cover corresponds to the central area of ​​the bottom of the heated stove. The second air outlet provided therein forms a heating flame for the central area of ​​the heated stove, thereby improving the heating efficiency of the central area of ​​the bottom of the heated stove, avoiding uneven heating temperature, and improving the heating effect.

[0021] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 A schematic diagram of the structure of a gas stove provided in an embodiment of the present application;

[0024] Figure 2 A schematic diagram of the explosion structure of a gas stove provided in an embodiment of the present application;

[0025] Figure 3 A schematic diagram of the structure of an inner fire cover in a gas stove provided in an embodiment of the present application;

[0026] Figure 4 A schematic structural diagram of an inner fire cover in another gas stove provided in an embodiment of the present application;

[0027] Figure 5 A schematic structural diagram of a stove base in a gas stove provided in an embodiment of the present application;

[0028] Figure 6 A schematic structural diagram of a stove base in another gas stove provided in an embodiment of the present application;

[0029] Figure 7 A schematic structural diagram of a base in a gas stove provided in an embodiment of the present application;

[0030] Figure 8 A schematic diagram of the structure of a gas distributor in a gas stove provided in an embodiment of the present application;

[0031] Figure 9 A schematic diagram of the structure of another gas distributor in a gas stove provided in an embodiment of the present application;

[0032] Figure 10 A schematic diagram of the structure of an outer flame cover of a gas stove provided in an embodiment of the present application;

[0033] Figure 11 A schematic diagram of the structure of an outer flame cover of another gas stove provided in an embodiment of the present application;

[0034] Figure 12 A schematic diagram of the vertical cross-sectional structure of another gas stove outer fire cover provided in an embodiment of the present application.

[0035] Reference numerals and corresponding descriptions:

[0036] 1: Stove base; 11: Base; 111: Gas inlet; 112: First air inlet; 113: Accommodation chamber; 12: Gas distributor; 121: Inner fire inlet channel; 122: Second air inlet; 13: Outer fire inlet channel; 131: First outer fire inlet concave wall; 132: Second outer fire inlet concave wall; 14: Air baffle; 15: Flow restriction hole; 16: Annular flow channel;

[0037] 2: outer fire cover; 21: first connecting hole; 22: second connecting hole; 23: fire transmission gap; 24: third air outlet; 25: third air outlet gap; 26: cavity of outer fire cover; 27: fifth air outlet; 28: guide surface;

[0038] 3: Inner fire cover; 31: Air inlet opening; 32: Ignition air outlet; 33: Inner fire cover cavity; 331: First zone; 332: Second zone; 34: Top wall; 341: Second air outlet; 35: Side wall; 351: First air outlet; 352: First air outlet slit; 36: Top cover; 37: Second air outlet slit; 38: Boss; 39: Fourth air outlet;

[0039] 4: air baffle; 41: air baffle main plate; 42: first air baffle side plate; 43: second air baffle side plate;

[0040] 5: Ignition sensor needle;

[0041] 6: Raised edge;

[0042] 7: Liquid collecting recess;

[0043] 8: diversion part;

[0044] 9: Waterproof bumps. DETAILED DESCRIPTION

[0045] The present application is described in detail below. Examples of embodiments of the present application are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components having the same or similar functions. In addition, if the detailed description of the known technology is not necessary for the features of the present application shown, it will be omitted. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0046] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with their meanings in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0047] Those skilled in the art will understand that, unless otherwise stated, the singular forms "a", "an" and "the" used herein may also include the plural forms. It should be further understood that the wording "comprising" used in the specification of the present application refers to the presence of the features, elements and / or components, but does not exclude the presence or addition of one or more other features, elements, components and / or groups thereof. It should be understood that when we say that an element is "connected" to another element, it can be directly connected to the other element, or there may be an intermediate element. The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments.

[0048] like Figure 1-4 As shown, an embodiment of the present application provides a gas stove, which mainly includes a stove base 1, an outer fire cover 2, an inner fire cover 3, and an air baffle 4. The outer fire cover 2 is connected to the stove base 1; the inner fire cover 3 is connected to the stove base 1 and is located inside the outer fire cover 2. The inner fire cover 3 includes an air inlet opening 31 and an ignition air outlet 32 ​​for corresponding to the ignition sensor pin 5. The air baffle 4 is arranged inside the inner fire cover 3 to divide the cavity 33 of the inner fire cover into a first area 331 and a second area 332. The air baffle 4 is used to decelerate the mixed gas of part of the gas and air that flows into the second area 332 through the air inlet opening 31 and enter the first area 331 to form a smooth mixed gas flow.

[0049] In some possible embodiments, the stove base 1 is used to support the heated stove. Both the inner and outer fire covers 3 and 2 are provided with gas outlet structures for discharging gas from the inner and outer fire covers 3 and 2, thereby forming an airflow to be ignited. Both the inner and outer fire covers 3 and 2 are secured to the top of the stove base 1 and are configured to correspond to the heated area at the bottom of the heated stove, which is typically the bottom wall of the stove.

[0050] The inner fire cover 3 is disposed in the middle of the stove base 1 to form an inner ring of flames in the middle of the stove base 1, thereby heating the central area of ​​the bottom of the heated stove. The outer fire cover 2 is a circular ring structure. The outer fire cover 2 surrounds the inner fire cover 3 and is spaced apart from the inner fire cover 3 to form an outer ring of flames in an area away from the middle of the stove base 1, thereby heating the edge area of ​​the bottom of the heated stove. When the gas stove is in use, the axial direction of the outer fire cover 2 is arranged in the vertical direction. For ease of description, the positions and orientations of the various components of the gas stove in all embodiments of this application are described based on the state corresponding to the axial direction of the outer fire cover 2 being in the vertical direction.

[0051] The wall of the inner fire cover 3 encloses a cavity 33 of the inner fire cover. A gas blocker 4 is fixed within the cavity 33 of the inner fire cover, dividing the cavity 33 into a first area 331 and a second area 332. The first area 331 is close to the ignition outlet 32, while the second area 332 is farther away from the ignition outlet 32. The gas blocker 4 is positioned closer to the ignition outlet 32, and the space occupied by the second area 332 is larger than that occupied by the first area 331.

[0052] Through the embodiment provided in the present application, part of the mixed gas of fuel gas and air flowing into the second zone 332 flows toward the gas baffle 4, and under the blocking, rebounding and guiding action of the gas baffle 4, the speed is reduced and a smooth mixed gas flow is formed. At least part of the mixed gas flow flows out from the ignition outlet 32 ​​and is ignited by the ignition sensing needle 5 located on the outside of the inner fire cover 3, forming a stable inner ring flame, avoiding the occurrence of adverse phenomena such as excessive carbon monoxide content in the flue gas caused by incomplete combustion, poor ignition and flameout after ignition, thereby improving the heating efficiency.

[0053] like Figure 1-4 As shown, as an optional embodiment, the inner fire cover 3 includes a top wall 34 and a side wall 35 extending along the outer circumference of the top wall 34 away from the top wall 34, the air inlet opening 31 is opened on the opposite side of the top wall 34, and the ignition outlet hole 32 is arranged on the side wall 35; wherein, the air baffle 4 is fixed to the top wall 34, and the distance between the air baffle 4 and the air inlet opening 31 is less than or equal to the distance between the ignition outlet hole 32 and the air inlet opening 31.

[0054] Based on the aforementioned embodiments, some possible embodiments are provided. The top wall 34 is a circular plate-shaped structure. The top wall 34 and sidewalls 35 extending along the outer circumference of the top wall 34 and away from the top wall 34 form a cylindrical structure. When the inner fire cover 3 is assembled on the stove base 1, the top wall 34 is located on the side of the inner fire cover 3 away from the stove base 1. In one possible mixed gas flow path, the gas and air mixture flows from the air inlet opening 31 into the inner fire cover 3 and then toward the top wall 34. The flow direction is changed by the obstruction of the top wall 34, and a portion of the mixed gas flows toward the gas baffle 4, thereby reducing its velocity. Among them, the air baffle 4 can be fixed on the top wall 34 and extend toward the air inlet opening 31 (i.e., away from the top wall 34), so that the distance between the end of the air baffle 4 close to the inlet and the air inlet opening 31 is less than or equal to the distance between the ignition outlet hole 32 and the air inlet opening 31, so as to increase the blocking area of ​​the air baffle 4, and prevent the mixed gas from crossing the air baffle 4, flowing from the second zone 332 into the first zone 331, and then directly flowing out of the inner fire cover 3 from the ignition outlet hole 32, that is, to prevent the mixed gas from flowing out of the inner fire cover 3 directly without deceleration.

[0055] Based on the aforementioned embodiments, some possible embodiments are provided, in which the inner fire cover 3 and the stove base 1 can be detachably connected by cooperation of concave and convex structures; for example, a recess of an annular structure for connecting with the inner fire cover 3 is provided on the stove base 1, and the end of the inner fire cover 3 having the air inlet opening 31 can be inserted into the recess of the annular structure to achieve a detachable connection between the inner fire cover 3 and the stove base 1; in another example, the end of the inner fire cover 3 having the air inlet opening 31 is provided with a recess of an annular structure, and the recess of the annular structure of the inner fire cover 3 is formed by being recessed in a direction toward the top wall 34, and a protrusion of an annular structure is provided on the stove base 1, and the protrusion of the annular structure is inserted into the recess of the annular structure of the inner fire cover 3 to achieve a detachable connection between the inner fire cover 3 and the stove base 1.

[0056] like Figure 4 As shown, as an optional embodiment, the air baffle member 4 includes an air baffle main plate 41, a first air baffle side plate 42 and a second air baffle side plate 43; wherein the first air baffle side plate 42 and the second air baffle side plate 43 are respectively fixed at an angle to the opposite sides of the air baffle main plate 41, so that part of the mixed gas of gas and air flowing toward the air baffle main plate 41 flows along the first air baffle side plate 42 and the second air baffle side plate 43 toward the ignition outlet 32.

[0057] Based on the aforementioned embodiments, some possible embodiments are provided. The inner surface of the top wall 34 is planar, and the air baffle main plate 41, the first air baffle side plate 42, and the second air baffle side plate 43 are all perpendicular to the top wall 34. The first air baffle side plate 42 and the second air baffle side plate 43 are respectively fixed at an angle to opposite sides of the air baffle main plate 41 to form a "C"-shaped structure, with the opening of the "C"-shaped structure facing the ignition outlet 32. The plate surface of the air baffle main plate 41 faces the ignition outlet 32, and the first air baffle side plate 42 and the second air baffle side plate 43 are spaced apart from the side wall 35. This spacing allows the decelerated mixed gas to flow along the plate surface of the first air baffle side plate 42 or the second air baffle side plate 43, from the side of the air baffle main plate 41 opposite the ignition outlet 32 ​​to the side of the air baffle main plate 41 facing the ignition outlet 32, thereby forming a stable mixed gas flow.

[0058] As an optional embodiment, the air baffle 4 is fixed to the top wall 34 and the side wall 35, and a limited flow hole is provided on the air baffle 4, so that part of the mixture of gas and air flowing into the second zone 332 flows into the first zone 331 through the limited flow hole; wherein, the distance between the air baffle 4 and the air inlet opening 31 is less than or equal to the distance between the ignition outlet hole 32 and the air inlet opening 31.

[0059] Based on the above embodiments, some possible embodiments are provided. The air baffle 4 is an air baffle. The inner wall surface of the top wall 34 is a plane. The air baffle is perpendicular to the top wall 34. The plate surface of the air baffle faces the ignition air inlet. The two ends of the air baffle extend to the side wall 35 in relatively distant directions. A flow-limiting hole is provided along the thickness direction of the air baffle. Part of the mixed gas of the fuel gas and air flowing into the second zone 332 flows into the first zone 331 through the flow-limiting hole. The mixed gas is decelerated by the flow-limiting effect of the flow-limiting hole. Among them, the distance between the end of the air baffle close to the inlet and the air inlet opening 31 is less than or equal to the distance between the ignition air outlet 32 ​​and the air inlet opening 31, so as to increase the blocking area of ​​the air baffle, prevent the mixed gas from passing over the air baffle 4, flowing from the second zone 332 into the first zone 331, and then directly flowing out of the inner fire cover 3 from the ignition air outlet 32, that is, prevent the mixed gas from directly flowing out of the inner fire cover 3 without being decelerated.

[0060] As an optional embodiment, the air baffle 4 is fixed to the side wall 35, and the air baffle 4 and the top wall 34 form a flow limiting gap, and part of the mixed gas of fuel gas and air flowing into the second zone 332 flows into the first zone 331 through the flow limiting gap; wherein, the distance between the air baffle 4 and the air inlet opening 31 is less than or equal to the distance between the ignition outlet hole 32 and the air inlet opening 31.

[0061] Based on the aforementioned embodiments, some possible embodiments are provided. The air baffle 4 is an air baffle. The inner wall surface of the top wall 34 is flat. The air baffle is perpendicular to the top wall 34. Both ends of the air baffle extend away from each other to the side walls 35. The air baffle is spaced apart from the top wall 34 to form a flow-limiting gap between the air baffle and the top wall 34. The flow-limiting effect of the flow-limiting gap is used to reduce the speed of the mixed gas flowing from the second area 332 into the first area 331. In particular, the distance between the end of the air baffle closest to the inlet and the air inlet opening 31 is less than or equal to the distance between the ignition outlet 32 ​​and the air inlet opening 31, thereby increasing the blocking area of ​​the air baffle and preventing the mixed gas from passing over the air baffle 4 and flowing from the second area 332 into the first area 331 and then directly flowing out of the inner fire cover 3 through the ignition outlet 32. In other words, it is prevented that the mixed gas flows out of the inner fire cover 3 directly without being reduced in speed.

[0062] like Figure 1 and 3 As shown, as an optional embodiment, the outer periphery of the top wall 34 is further provided with an edge protrusion 6; wherein, the edge protrusion 6 and the top wall 34 are surrounded to form a liquid collecting recess 7 for collecting liquid overflowing from the heated cooktop, the side wall 35 is located on the inner side of the edge protrusion 6 and has a gap with the edge protrusion 6, and the edge protrusion 6 has a guide portion 8 for guiding the liquid in the liquid collecting recess 7 to flow out and flow down along the edge protrusion 6.

[0063] Based on the aforementioned embodiments, some possible embodiments are provided, in which the top wall 34 is a circular plate-shaped structure, and the side wall 35 is a circular ring-shaped structure. The edge protrusion 6 is a circular ring-shaped structure and is arranged along the edge of the top wall 34. The edge protrusion 6 is on the side of the top wall 34 away from the side wall 35, protruding from the top wall 34 in a direction away from the side wall 35. The top wall 34 is lower than the edge protrusion 6 to form a liquid collection recess 7. The guide portion 8 is a guide surface connected to the top wall 34 at an angle. The liquid in the liquid collection recess 7 flows out of the liquid collection recess 7 along the guide surface and flows down along the edge protrusion 6. The edge protrusion 6 is on the side of the top wall 34 close to the side wall 35, protruding from the top wall 34 in a direction close to the side wall 35. In a transverse cross-section, the top wall 34 covers the side wall 35, forming a gap between the side wall 35 and the edge protrusion 6. This prevents liquid from flowing along the edge protrusion 6 and the side wall 35 to the air outlet structure on the side wall 35 and causing blockage.

[0064] Based on the aforementioned embodiments, some possible embodiments are provided, in which the inner fire cover 3 further includes a waterproof protrusion 9, which is fixed to the top wall 34 and extends to the outside of the top wall 34 in a direction away from the top wall 34, and is used to shield the ignition sensing needle 5 located on the outside of the inner fire cover 3 to prevent dripping liquid from flowing into the ignition sensing needle 5 and causing blockage.

[0065] like Figure 3As shown, as an optional embodiment, the side wall 35 is provided with first air outlet holes 351 distributed along the circumferential direction, and the side wall 35 is also provided with a first air outlet slit 352 opening outward; wherein, the first air outlet slit 352 is connected to the first air outlet hole 351, and the first air outlet hole 351 faces the side wall 35, and the mixed gas of gas and air flowing out of the first air outlet hole 351 flows toward the side wall 35 to change the flow direction and flow out from the first air outlet slit 352.

[0066] Based on the aforementioned embodiments, some possible embodiments are provided, in which the side wall 35 is recessed along the circumferential direction to form an annular side wall 35 recess, the opening of the side wall 35 recess is outward, and the width of the opening is small, so as to form a first air outlet slit 352 of a slit structure; the first air outlet holes 351 distributed along the circumferential direction are connected to the cavity 33 of the inner fire cover, and the air outlet end of the first air outlet hole 351 is located in the first air outlet slit 352 and is arranged toward the side wall 35. The mixed gas flowing out of the first air outlet hole 351 changes its flow direction and reduces its flow rate under the blocking effect of the side wall 35, thereby forming a stable mixed gas flow. The stable mixed gas flow flows out of the first air outlet slit 352 and is ignited and burns to form a stable flame.

[0067] The inventors have discovered that existing gas stoves are usually equipped with an outer ring flame and an inner ring flame. However, due to the smaller load of the inner ring flame, the temperature of the central area of ​​the heated stove is low when the user is cooking, while the temperature of the outer area is high. That is, the center of the gas stove lacks a heating flame, resulting in uneven heating temperature. In order to solve this problem, the solution to the above problem provided by the embodiments of the present application is introduced below.

[0068] like Figure 3 As shown, as an optional embodiment, a second air outlet 341 distributed along the circumferential direction is opened in the middle of the top wall 34 to heat the middle area of ​​the heated stove.

[0069] Based on the above embodiments, some possible embodiments are provided. The second air outlet 341 communicates with the cavity 33 of the inner fire cover. The outlet ends of the second air outlet 341 are distributed circumferentially to form a ring-shaped flame. The second air outlet 341 can be a circular hole and arranged vertically axially. The middle portion of the top wall 34 corresponds to the central area of ​​the bottom of the heated stove. The ring-shaped flame formed by the mixed gas flowing out of the second air outlet 341 corresponds to the central area of ​​the heated stove bottom, thereby improving the heating efficiency of the central area of ​​the heated stove bottom.

[0070] like Figure 3As shown, as an optional embodiment, the inner fire cover 3 also includes a top cover 36, which covers the second air outlet hole 341 and forms a second air outlet gap 37 with the top wall 34; wherein, the second air outlet gap 37 is connected to the second air outlet hole 341, and the second air outlet hole 341 faces the top cover 36, and the mixed gas of the fuel gas and air flowing out of the ignition air outlet hole 32 flows toward the top cover 36 to change the flow direction and flow out from the second air outlet gap 37.

[0071] Based on the aforementioned embodiments, some possible embodiments are provided, in which the inner fire cover 3 further includes a supporting portion (not marked) for supporting the top cover 36, the supporting portion protruding from the top wall 34 in a direction away from the side wall 35, and arranged in the middle of the top wall 34, the second air outlet 341 is arranged around the supporting portion, and the top cover 36 is fixed to one end of the supporting portion away from the top wall 34; optionally, the supporting portion is a cylindrical structure, the top cover 36 is a circular plate structure, and the side of the top cover 36 away from the supporting portion is a curved surface with the middle portion higher than the edge, and the liquid flows along the curved surface into the aforementioned liquid collecting recess 7 to avoid the liquid flowing into the second air outlet 341 and causing the air outlet to be blocked, making the formed flame unstable.

[0072] Based on the aforementioned embodiment, another possible embodiment is provided, in which the inner fire cover 3 further includes a boss 38, which protrudes from the side of the top wall 34 away from the side wall 35, and the outlet end of the second air outlet 341 is located on the side of the boss 38 away from the top wall 34, so that the outlet end of the second air outlet 341 is away from the liquid collecting recess 7, thereby preventing liquid from flowing into the second air outlet 341 and causing the air outlet to be blocked, thereby making the burning flame unstable.

[0073] like Figure 2 、 5 -9, as an optional embodiment, the stove base 1 includes a base 11 and an air distributor 12 arranged on the inner side of the base 11, and a plurality of external fire air inlet channels 13 are formed between the base 11 and the air distributor 12. An air baffle 14 is provided at the outlet of each external fire air inlet channel 13, and a limiting flow hole 15 is provided on each air baffle 14 to reduce the flow rate of the mixed gas of fuel gas and air.

[0074] Based on the foregoing embodiments, some possible embodiments are provided, in which the base 11 is a circular bowl-shaped structure, and a gas inlet 111 is provided at the center of the bottom of the base 11; a plurality of first air inlets 112 are provided at the bottom of the base 11 surrounding the gas inlet 111; the shell wall of the base 11 is formed to form an accommodating cavity 113, and in the accommodating cavity 113, a first external fire air inlet concave wall 131 is formed between two adjacent first air inlets 112, and one end of the first external fire air inlet concave wall 131 is connected to the gas inlet 111.

[0075] Optionally, the cross-section of the first air inlet 112 in the vertical direction can be fan-shaped; in the direction in which the base 11 moves away from the air distributor 12, the cross-sectional area of ​​the first air inlet 112 in the vertical direction becomes larger and larger, that is, the air inlet side opening of the first air inlet 112 is the largest, and the air outlet side opening of the first air inlet 112 is the smallest, and the opening from the air inlet side to the air outlet side of the first air inlet 112 becomes smaller and smaller along the gas flow direction.

[0076] The air distributor 12 is a disc-shaped structure with an inner fire air inlet channel 121 disposed in the middle of the air distributor 12. Surrounding the inner fire air inlet channel 121, a second air inlet 122 is disposed on the air distributor 12. The second air inlet 122 is configured to correspond to the first air inlet 112 so that part of the gas flowing in from the inlet side of the first air inlet 112 flows out from the outlet side of the second air inlet 122. A second outer fire air inlet concave wall 132 is formed between two adjacent second air inlets 122.

[0077] When the gas distributor 12 is assembled in the accommodating cavity 113 of the base 11, the openings of the first outer fire air inlet concave wall 131 and the second outer fire air inlet concave wall 132 are opposite and fit together, so as to form a space for gas circulation between the first outer fire air inlet concave wall 131 and the second outer fire air inlet concave wall 132, forming the aforementioned outer fire air inlet channel 13. One end of the inner fire air inlet channel 121 extends to the gas inlet port 111, and is spaced apart from the annular wall forming the gas inlet port 111, so as to form a structure connecting to the outer fire air inlet channel 13 between the inner fire air inlet channel 121 and the annular wall forming the gas inlet port 111, so that the gas entering from the gas inlet port 111 partially flows into the inner fire air inlet channel 121, and the other part flows into the outer fire air inlet channel 13; wherein, the inner fire air inlet channel 121 is connected to the cavity 33 of the inner fire cover.

[0078] The edge of the gas distributor 12 is spaced apart from the edge of the base 11, forming an annular flow channel 16. An air baffle 14 is provided at the outlet of each outer flame inlet channel 13. This air baffle 14 is located within the annular flow channel 16 and extends toward the base 11. Each air baffle 14 has two flow-restricting holes 15, which reduce the flow velocity of the gas-air mixture at that location and minimize uneven height of the outer ring flame's main flame. Optionally, the air baffle 14 can be positioned horizontally, while the flow-restricting holes 15 can be arranged axially and vertically.

[0079] like Figure 10-12As shown, as an optional embodiment, a first connecting hole 21 and a second connecting hole 22 are provided on the outer fire cover 2, and a fire transfer gap 23 is provided on the outer fire cover 2 extending from the inner side of the outer fire cover 2 to the outer side of the outer fire cover 2; wherein, the first connecting hole 21 and the second connecting hole 22 are both connected to the fire transfer gap 23 and the gas intake channel, and the first connecting hole 21 and the second connecting hole 22 are arranged at an angle to reduce the speed of the gas flowing through the fire transfer gap 23.

[0080] Based on the aforementioned embodiments, some possible embodiments are provided. The cover wall of the outer fire cover 2 is enclosed to form a cavity 26 of the outer fire cover. The outer fire cover 2 has an opening, which is the air inlet of the outer fire cover 2. The end of the air inlet of the outer fire cover 2 is inserted into the annular circulation channel 16 between the edge of the aforementioned gas distributor 12 and the edge of the base 11, so as to realize the detachable connection between the outer fire cover 2 and the stove base 1. The mixed gas flows out from the outer fire inlet channel 13, part of the mixed gas flows into the cavity 26 of the outer fire cover through the annular circulation channel 16, and the other part of the mixed gas flows through the first connecting hole 21 and the second connecting hole 22 to the fire transfer seam 23 to ignite and burn, and flows out from both sides and the top of the fire transfer seam 23. Among them, the mixed gas ignites from the inner end point of the fire transfer seam 23, then passes through the fire transfer seam 23 to the outer end of the fire transfer seam 23, and then transfers the fire to the gas outlet structure of the outer fire cover 2. The first connecting hole 21 and the second connecting hole 22 increase the distance for the gas to reach the fire transfer gap 23, thereby reducing the flow rate of the fuel gas through the fire transfer gap 23 and preventing the flame at the fire transfer gap 23 from leaving the flame. At the same time, it solves the problem of poor rigidity of the outer fire cover 2 caused by the existing fire transfer gap 23 directly cutting through the outer fire cover 2.

[0081] like Figure 10-12 As shown, as an optional embodiment, the outer fire cover 2 is provided with third air outlet holes 24 distributed along the circumferential direction, and the outer fire cover 2 is also provided with a third air outlet slit 25 opening outward; wherein, the third air outlet slit 25 is connected to the third air outlet hole 24, and the third air outlet hole 24 faces the outer fire cover 2, and the mixed gas of gas and air flowing out of the third air outlet hole 24 flows toward the outer fire cover 2 to change the flow direction and flow out from the third air outlet slit 25.

[0082] Based on the aforementioned embodiments, some possible embodiments are provided, in which the cover wall of the outer fire cover 2 is circumferentially recessed to form an annular outer fire cover recess, the opening of the outer fire cover recess is outward (away from the side of the inner fire cover 3), and the width of the opening is small, so as to form a third air outlet slit 25 of a slit structure; the third air outlet holes 24 distributed along the circumference are connected to the cavity, and the air outlet end is located in the third air outlet slit 25, and is arranged toward the cover wall of the outer fire cover 2. The mixed gas flowing out of the third air outlet hole 24 changes its flow direction and reduces its flow rate under the blocking effect of the cover wall of the outer fire cover 2 to form a stable mixed gas flow. The stable mixed gas flow flows out from the third air outlet slit 25 and is ignited to form a stable flame.

[0083] like Figure 10-12 As shown, based on the aforementioned embodiments, some possible embodiments are provided, the side wall 35 of the inner fire cover 3 is further provided with a fourth air outlet 39 distributed along the circumferential direction, and the outer fire cover 2 is provided with a fifth air outlet 27 distributed along the circumferential direction, and the air outlet end of the fifth air outlet 27 is facing outward, that is, away from the inner fire cover 3; the mixed gas flows out through the first air outlet 351, the second air outlet 341, the third air outlet 24, the fourth air outlet 39 and the fifth air outlet 27 respectively and is ignited to form an annular heating flame, forming a multi-level heating flame, so as to achieve heating of the middle area, the area away from the middle area and the edge area of ​​the bottom of the heated stove, so as to evenly heat the heated stove, heat the food evenly, and improve the heating effect.

[0084] As an optional embodiment, the inner side surface of the outer fire cover 2 (the side facing the inner fire cover 3) is a guide surface 28, which is inclined inward. The outlet ends of the third air outlet 24 and the fifth air outlet 27 are located on the outer side surface of the outer fire cover 2. The flowing liquid slides along the guide surface 28 to the inner side of the outer fire cover 2 to stay away from the outlet ends of the third air outlet 24 and the fifth air outlet 27 on the outer side surface of the outer fire cover 2, thereby avoiding blockage of the third air outlet 24 and the fifth air outlet 27.

[0085] By applying the embodiments of the present application, at least the following beneficial effects can be achieved:

[0086] Part of the mixed gas of fuel gas and air flowing into the second zone 332 flows toward the gas baffle 4, and under the blocking, rebounding and guiding action of the gas baffle 4, the speed is reduced and a smooth mixed gas flow is formed. At least part of the mixed gas flows out from the ignition outlet 32 ​​and is ignited by the ignition sensing needle 5 located on the outside of the inner fire cover 3, forming a stable inner ring flame, avoiding the occurrence of adverse phenomena such as excessive carbon monoxide content in the flue gas caused by incomplete combustion, poor ignition and flameout after ignition, thereby improving the heating efficiency.

[0087] A liquid collecting recess 7 is provided on the top of the inner fire cover 3 for collecting liquid overflowing from the heated stove. After entering the liquid collecting recess 7, the liquid can flow out of the liquid collecting recess 7 along the guide surface and flow down along the edge protrusion 6 to stay away from the air outlet structure on the side wall 35, thereby avoiding blockage of the air outlet structure and instability of the flame.

[0088] The air baffle and flow restriction hole 15 provided at the outlet of the outer fire air inlet channel 13 can reduce the flow velocity of the gas-air mixture therein and reduce the uneven height of the outer ring fire main flame.

[0089] The first connecting hole 21 and the second connecting hole 22 increase the distance for the gas to reach the fire transfer gap 23, thereby reducing the flow rate of the fuel gas through the fire transfer gap 23 and preventing the flame at the fire transfer gap 23 from leaving the flame. At the same time, it solves the problem of poor rigidity of the outer fire cover 2 caused by the existing fire transfer gap 23 directly cutting through the outer fire cover 2.

[0090] The middle portion of the top wall 34 of the inner fire cover 3 corresponds to the central area of ​​the bottom of the heated stove. The second air outlet 341 provided here forms a heating flame for the central area of ​​the heated stove, thereby improving the heating efficiency of the central area of ​​the bottom of the heated stove, avoiding uneven heating temperature, and improving the heating effect.

[0091] Those skilled in the art will appreciate that the steps, measures, and schemes in the various operations, methods, and processes discussed in this application may be interchanged, modified, combined, or deleted. Furthermore, other steps, measures, and schemes in the various operations, methods, and processes discussed in this application may also be interchanged, modified, rearranged, decomposed, combined, or deleted. Furthermore, steps, measures, and schemes in the prior art that are similar to those disclosed in this application may also be interchanged, modified, rearranged, decomposed, combined, or deleted.

[0092] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position 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 operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0093] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0094] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0095] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0096] It should be understood that although the steps in the flowcharts of the accompanying drawings are shown in sequence as indicated by the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some of the steps in the flowcharts of the accompanying drawings may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be executed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

[0097] The above description is only part of the implementation methods of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A gas stove, characterized in that: include: Furnace base (1); An outer fire cover (2) connected to the stove base (1); An inner fire cover (3) is connected to the stove base (1) and is located inside the outer fire cover (2), the inner fire cover (3) including an air inlet opening (31) and an ignition air outlet hole (32) for corresponding to the ignition sensing needle (5); the inner fire cover (3) includes a top wall (34) and a side wall (35) extending along the outer circumference of the top wall (34) and away from the top wall (34), the air inlet opening (31) is opened on the opposite side of the top wall (34), and the ignition air outlet hole (32) is provided on the side wall (35); An air baffle (4) is arranged on the inner side of the inner fire cover (3) to divide the cavity (33) of the inner fire cover into a first area (331) and a second area (332), wherein the first area (331) is close to the ignition air outlet (32) and the second area (332) is far away from the ignition air outlet (32); the air baffle (4) is arranged close to the ignition air outlet (32), and the space occupied by the second area (332) is larger than the space occupied by the first area (331); the air baffle (4) is used to decelerate a portion of the mixed gas of fuel gas and air flowing into the second area (332) through the air inlet opening (31) and enter the first area (331) to form a smooth mixed gas. flow; the air baffle (4) is fixed to the top wall (34), and the distance between the air baffle (4) and the air inlet opening (31) is less than or equal to the distance between the ignition outlet hole (32) and the air inlet opening (31); the air baffle (4) includes an air baffle main plate (41), a first air baffle side plate (42) and a second air baffle side plate (43); the first air baffle side plate (42) and the second air baffle side plate (43) are respectively fixed to opposite sides of the air baffle main plate (41) at an angle, so that a part of the mixed gas of the fuel gas and air flowing toward the air baffle main plate (41) flows toward the ignition outlet hole (32) along the first air baffle side plate (42) and the second air baffle side plate (43).

2. The gas stove according to claim 1, characterized in that: The outer periphery of the top wall (34) is further provided with an edge protrusion (6); The edge protrusion (6) and the top wall (34) are arranged to form a liquid collecting recess (7) for collecting liquid overflowing from the heated cooker; the side wall (35) is located on the inner side of the edge protrusion (6) and has a gap with the edge protrusion (6); the edge protrusion (6) has a guide portion (8) for guiding the liquid in the liquid collecting recess (7) to flow out and flow down along the edge protrusion (6).

3. The gas stove according to claim 1, characterized in that: The side wall (35) is provided with first air outlet holes (351) distributed along the circumferential direction, and the side wall (35) is also provided with a first air outlet slit (352) opening outward; The first air outlet slit (352) is connected to the first air outlet hole (351), the first air outlet hole (351) faces the side wall (35), and the mixed gas of fuel gas and air flowing out of the first air outlet hole (351) flows toward the side wall (35) to change the flow direction and flow out of the first air outlet slit (352).

4. The gas stove according to claim 1, characterized in that: The middle portion of the top wall (34) is provided with second air outlet holes (341) distributed along the circumferential direction, for heating the middle region of the heated stove.

5. The gas stove according to claim 4, characterized in that: The inner fire cover (3) also includes: A top cover (36) is provided on the second air outlet hole (341) and forms a second air outlet gap (37) with the top wall (34); The second air outlet slit (37) is connected to the second air outlet hole (341), the second air outlet hole (341) faces the top cover (36), and the mixed gas of the fuel gas and air flowing out of the second air outlet hole (341) flows toward the top cover (36) to change the flow direction and flow out of the second air outlet slit (37).

6. The gas stove according to claim 1, characterized in that: The stove base (1) comprises a base (11) and an air distributor (12) arranged on the inner side of the base (11); a plurality of external fire air inlet channels (13) are formed between the base (11) and the air distributor (12); an air baffle (14) is provided at the outlet of each external fire air inlet channel (13); and a flow limiting hole (15) is provided on each air baffle (14) to reduce the flow rate of the mixed gas of fuel gas and air.

7. The gas stove according to claim 6, characterized in that: The outer fire cover (2) is provided with a first communication hole (21) and a second communication hole (22), and the outer fire cover (2) is provided with a fire transmission seam (23) extending from the inner side of the outer fire cover (2) toward the outer side of the outer fire cover (2); The first connecting hole (21) and the second connecting hole (22) are both connected to the fire transfer gap (23) and the external fire air inlet channel (13), and the first connecting hole (21) and the second connecting hole (22) are arranged at an angle to reduce the speed of the gas flowing through the fire transfer gap (23).

8. The gas stove according to claim 1, characterized in that: The outer fire cover (2) is provided with third air outlet holes (24) distributed along the circumferential direction, and the outer fire cover (2) is also provided with a third air outlet slit (25) opening outward; The third air outlet slit (25) is connected to the third air outlet hole (24), and the third air outlet hole (24) faces the outer fire cover (2). The mixed gas of the fuel gas and the air flowing out of the third air outlet hole (24) flows toward the outer fire cover (2) to change the flow direction and then flows out from the third air outlet slit (25).

Images