Fire cover, combustor and gas stove

Abstract

The utility model discloses a burner cap, a burner and a gas stove. The fire cover comprises an outer fire cover body, an inner fire cover body and a middle fire cover body, the outer fire cover body is provided with an outer fire opening, the inner fire cover body is provided with an inner fire opening, the inner fire cover body is surrounded by the outer fire cover body, and the middle fire cover body shields the space between the outer fire cover body and the inner fire cover body. According to the fire cover, the middle fire cover is arranged and shields the space between the outer fire cover and the inner fire cover, so that residues and impurities are prevented from entering the space between the outer fire cover and the inner fire cover, the integrity of the fire cover is higher, and the fire cover is easier to clean and manage.

Description

Technical Field

[0001] The present application relates to the technical field of gas stoves, and in particular to a fire cover, a burner and a gas stove. Background Art

[0002] The fire cover of the burner includes an inner fire cover and an outer fire cover surrounding the inner fire cover. The inner fire cover forms an inner ring flame, and the outer fire cover forms an outer ring flame, thereby heating the cooker. At present, a certain space is formed between the inner fire cover and the outer fire cover of this fire cover, and residues and debris can easily enter the space between the inner fire cover and the outer fire cover, which is not convenient for cleaning. Utility Model Content

[0003] The present application aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the present application proposes a fire cover.

[0004] To achieve the above objectives, the present application discloses a fire cover, which includes:

[0005] An external fire cover is provided with an external fire port;

[0006] An inner fire cover, provided with an inner fire port, the inner fire cover being surrounded by the outer fire cover; and

[0007] The middle fire cover covers the space between the outer fire cover and the inner fire cover.

[0008] In some embodiments of the present application, the inner fire cover and the middle fire cover are connected and fixed;

[0009] and / or, the inner fire cover is arranged at the center of the fire cover;

[0010] And / or, the inner fire cover is a porous ceramic plate.

[0011] In some embodiments of the present application, the top surface of the medium-fire cover is a plane;

[0012] and / or, the top surface of the middle fire cover constitutes the top surface of the fire cover;

[0013] And / or, the middle fire cover is suitable for being abutted by the inner wall of the outer fire cover along the radial direction of the fire cover.

[0014] In some embodiments of the present application, the outer burner includes a first burner and a second burner, and the second burner is closer to the center of the burner cover than the first burner.

[0015] In some embodiments of the present application, the flame generated by one of the first burner and the second burner is suitable for stabilizing the flame of the other.

[0016] In some embodiments of the present application, the first burner and the second burner are disposed on a common wall, and the thickness of the wall between the first burner and the second burner is not greater than 6 mm.

[0017] In some embodiments of the present application, the fire cover is provided with a first gas outlet channel, the end of the first gas outlet channel constitutes the first burner, and the first gas outlet channel is provided with at least one first corner upstream of the first burner;

[0018] And / or, the fire cover is provided with a second air outlet channel, the end of the second air outlet channel constitutes the second flame port, and the second air outlet channel is provided with at least one second corner upstream of the second flame port.

[0019] In some embodiments of the present application, the outer fire port includes a second fire port, the outer fire cover includes a second outer fire cover and a third outer fire cover, the second outer fire cover surrounds the third outer fire cover and the second fire port is provided between the second outer fire cover and the third outer fire cover, and the middle fire cover is provided between the third outer fire cover and the inner fire cover to shield the space between the outer fire cover and the inner fire cover.

[0020] In some embodiments of the present application, the middle fire cover and the third outer fire cover are integrally formed.

[0021] In some embodiments of the present application, the outer fire port further includes a first fire port, and the outer fire cover further includes a first outer fire cover, the first outer fire cover surrounds the second outer fire cover and the first fire port is provided between the first outer fire cover and the second outer fire cover.

[0022] In some embodiments of the present application, there are multiple first burners, and the multiple first burners are alternately arranged in a ring shape and surround the second burner;

[0023] And / or, the number of the second burners is multiple, and the multiple second burners are arranged alternately in a ring shape and surround the inner burner;

[0024] And / or, the number of the inner fire ports is multiple.

[0025] In some embodiments of the present application, the first burner is in the shape of an annular seam and surrounds the second burner;

[0026] and / or, the second burner is in the shape of an annular seam and surrounds the inner burner;

[0027] And / or, the inner fire port is in the shape of an annular seam.

[0028] A second aspect of the present application discloses a burner, which comprises a burner head and the above-mentioned fire cover arranged on the burner head.

[0029] In some embodiments of the present application, the inner burner is suitable for spraying out fuel gas and induced air.

[0030] The third aspect of the present application discloses a gas stove, which comprises the burner mentioned above.

[0031] Other advantages of the present application will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other designs can be obtained based on the structures shown in these drawings without paying any creative work.

[0033] Figure 1 A schematic diagram of a burner in some embodiments;

[0034] Figure 2 It is a cross-sectional view of the matching structure of the fire cover and the burner head in some embodiments;

[0035] Figure 3 The cross-sectional view of the matching structure of the fire cover and the burner head in some embodiments (section and Figure 2 different);

[0036] Figure 4 for Figure 3 The enlarged view marked as A in FIG.

[0037] Figure 5 Schematic diagram of the partial structure of the burner in some embodiments (the fire cover is omitted);

[0038] Figure 6 Schematic diagram of the partial structure of the burner in some embodiments (the fire cover is omitted);

[0039] Figure 7 Schematic diagram of inner and outer fire covers in some embodiments;

[0040] Figure 8 for Figure 7 A cross-sectional view of the structure shown in;

[0041] Fig. 9 for Figure 8 The enlarged view marked as B in FIG. 1 (showing the air flow direction);

[0042] Fig.10 for Figure 8 The enlarged view marked as B in the figure;

[0043] Fig.11 Schematic diagram of internal and external fire covers in some embodiments (structure and Figure 7 different);

[0044] Fig.12 for Fig.11 A cross-sectional view of the structure shown in;

[0045] Fig.13 for Fig.12 The enlarged image marked as C in the figure;

[0046] Fig.14 Schematic diagram of the coordination structure of the fire cover and the burner head in some embodiments;

[0047] Fig.15 for Fig.14 a cross-sectional view of the structure shown;

[0048] Fig.16 for Fig.15 The enlarged image marked with D in the figure.

[0049] Description of Figure Numbers:

[0050] Burner 100, fire cover 1000, outer fire cover 1100, first outer fire cover 1110, second outer fire cover 1120, third outer fire cover 1130, inner fire cover 1200, middle fire cover 1300, first cover body 1310, second cover body 1320, outer fire port 1410, first fire port 1411, second fire port 1412, inner fire port 1420, first air outlet channel 1500, first upstream flow section 1510, first midstream flow section 1520, first downstream flow section 1530, The first corner 1540, the second air outlet channel 1600, the second upstream flow section 1610, the second downstream flow section 1630, the second corner 1640, the furnace head 2000, the first cavity 2110, the second cavity 2120, the third cavity 2130, the first ejector tube 3100, the air inlet end 3110 of the first ejector tube, the second ejector tube 3200, the air inlet end 3210 of the second ejector tube, the third ejector tube 3300, the air inlet end 3310 of the third ejector tube, and the fan 4000.

[0051] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0053] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0054] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0055] In addition, in this application, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0056] The first aspect of the present application discloses a fire cover 1000, in combination with Figures 1 to 4 As shown, the fire cover 1000 includes an outer fire cover 1100, an inner fire cover 1200 and a middle fire cover 1300. The outer fire cover 1100 surrounds the inner fire cover 1200, and the middle fire cover 1300 blocks the space between the outer fire cover 1100 and the inner fire cover 1200. The outer fire cover 1100 is provided with an outer fire port 1410, and the inner fire cover 1200 is provided with an inner fire port 1420.

[0057] The fire cover 1000 will be described below in conjunction with the burner 100, and the burner 100 is applied to a gas stove. The burner 100 includes a burner head 2000 and a fire cover 1000 disposed on the burner head 2000, and the fire cover 1000 includes an outer fire cover 1100 and an inner fire cover 1200, and the outer fire cover 1100 is provided with an outer fire port 1410, so that the outer fire cover 1100 can form an outer ring fire, and the inner fire cover 1200 is provided with an inner fire port 1420, so that the inner fire cover 1200 can form an inner ring fire, and the so-called outer fire cover 1100 is the part of the structure close to or located at the outer side of the fire cover 1000, and correspondingly, the inner fire cover 1200 is the part of the structure close to or located at the center of the fire cover 1000, so that the outer fire cover 1100 surrounds the inner fire cover 1200 and the two are separated by a certain distance, so that the outer ring fire and the inner ring fire are separated by a certain distance, thereby increasing the range of fire. In order to prevent the space between the outer fire cover 1100 and the inner fire cover 1200 from being exposed and harboring dirt, a middle fire cover 1300 is provided. The middle fire cover 1300 blocks the space between the outer fire cover 1100 and the inner fire cover 1200. The so-called blocking means that the space between the outer fire cover 1100 and the inner fire cover 1200 is no longer visible from top to bottom, thereby preventing residues and debris from entering between the outer fire cover 1100 and the inner fire cover 1200. It can be understood that since the middle fire cover 1300 blocks the space between the outer fire cover 1100 and the inner fire cover 1200, the middle fire cover 1300 is connected to the outer fire cover 1100 on the outside and to the inner fire cover 1200 on the inside, so that in the direction from the inner fire cover 1200 to the outer fire cover 1100, the top surface of the fire cover 1000 is a solid structure, such as Figure 1 As shown in the fire cover 1000, the top surface of the fire cover 1000 is almost a solid structure except for the outer fire port 1410 and the inner fire port 1420, which makes the fire cover 1000 more integrated and easier to clean.

[0058] Combination Figure 4 As shown, in some embodiments, the inner fire cover 1200 is connected and fixed to the middle fire cover 1300, so that the inner fire cover 1200 and the middle fire cover 1300 constitute independent modules and can be disassembled and assembled simultaneously. For example, the inner fire cover 1200 includes a first cover body 1310 and a second cover body 1320, the first cover body 1310 extends vertically and surrounds the inner fire cover 1200, the first cover body 1310 and the inner fire cover 1200 are connected and fixed, and the second cover body 1320 is arranged on the top of the first cover body 1310 and extends toward the outer fire cover 1100 to shield the space between the outer fire cover 1100 and the inner fire cover 1200.

[0059] Combination Figures 1 to 3As shown, in some embodiments, the inner fire cover 1200 is arranged at the center of the fire cover 1000, and the center of the fire cover 1000 is the center of the burner 100. The center of the burner 100 refers to the center of the fire range of the burner 100, that is, the flame generated by the inner fire cover 1200 is in the center of the fire range, which is more conducive to the gas stove being in the minimum fire cooking state, for example, the inner fire cover 1200 covers the center of the fire cover 1000.

[0060] Furthermore, the inner fire cover 1200 is a porous ceramic plate. The porous structure enables the inner fire cover 1200 to form a plurality of inner fire ports 1420. By designing the inner fire cover 1200 as a porous ceramic plate, the inner fire cover 1200 forms infrared combustion (constituting an infrared combustion fire cover), which is conducive to achieving minimum fire combustion, and the fire hole has a small thermal intensity, can achieve full premixed combustion, reduce the demand for secondary air, and even do not need to supplement secondary air. For example, the porous ceramic plate is mainly made of infrared ceramic materials.

[0061] Combination Figures 1 to 3 As shown, in some embodiments, the top surface of the middle fire cover 1300 is designed to be a plane. Since the middle fire cover 1300 blocks the space between the outer fire cover 1100 and the inner fire cover 1200, when the top surface of the middle fire cover 1300 is a plane, the integrity of the fire cover 1000 will be further improved, and it will be easier to clean. In particular, when the top surface of the middle fire cover 1300 constitutes the top surface of the fire cover 1000, when wiping the top surface of the fire cover 1000, the user's wiping action is smoother and less likely to be obstructed, for example Figure 1 The top surface of the middle fire cover 1300 is a horizontal surface.

[0062] Furthermore, combined with Figure 4 As shown, along the radial direction of the fire cover 1000, the middle fire cover 1300 is suitable for being abutted by the inner wall of the outer fire cover 1100. Generally speaking, the middle fire cover 1300 will be supported by the burner head 2000 in the direction of gravity, and by being abutted by the inner wall of the outer fire cover 1100 along the radial direction of the fire cover 1000, the middle fire cover 1300 is limited in two directions, and the middle fire cover 1300 is more stable. It can be understood that when the gas stove is in a use environment, the up and down direction is the axial direction, the gravity direction is from top to bottom along the axial direction, and the radial direction is perpendicular to the axial direction.

[0063] Combination Figure 4As shown, in some embodiments, the outer burner 1410 includes a first burner 1411 and a second burner 1412, and both the first burner 1411 and the second burner 1412 can generate flames. By setting the first burner 1411 and the second burner 1412, the outer ring fire formed by the outer fire cover 1100 covers a wider range. The second burner 1412 is closer to the center of the fire cover 1000 relative to the first burner 1411, and because the outer fire cover 1100 surrounds the inner fire cover 1200, the inner fire cover 1200 is provided with an inner burner 1420, so that the inner burner 1420 is closer to the center of the fire cover 1000 relative to the second burner 1412. Therefore, the first burner 1411, the second burner 1412 and the inner burner 1420 are arranged from the outside to the inside, that is, when observing the fire cover 1000 from top to bottom, the first burner 1411 is closer to the outside than the second burner 1412 and the inner burner 1420, and the inner burner 1420 is closer to the inside than the first burner 1411 and the second burner 1412. The second burner 1412 is between the first burner 1411 and the inner burner 1420. In this way, the inner burner 1420, the second burner 1412 2 and the first flame port 1411 are arranged in sequence in the direction away from the center of the fire cover 1000 (the minimum distance between the first flame port 1411 and the center of the fire cover 1000 is greater than the minimum distance between the second flame port 1412 and the center of the fire cover 1000, and the minimum distance between the second flame port 1412 and the center of the fire cover 1000 is greater than the minimum distance between the inner flame port 1420 and the center of the fire cover 1000). In some cases, the inner flame port 1420 may be located exactly at the center of the fire cover 1000.

[0064] Furthermore, the flame formed by one of the first burner 1411 and the second burner 1412 is used to stabilize the flame of the other of the first burner 1411 and the second burner 1412, so that the flames formed by the first burner 1411 and the second burner 1412 are more stable. That is, when the flame formed by one of them is more stable and the flame formed by the other is relatively unstable, the unstable flame can be stabilized by a stable flame, as described below for details.

[0065] Combination Figure 4 As shown, in some embodiments, the first burner 1411 and the second burner 1412 are arranged on the same wall, and the thickness of the wall between the first burner 1411 and the second burner 1412 is not more than 6 mm. For example, the thickness of the wall between the first burner 1411 and the second burner 1412 is 0.2 mm, 0.5 mm, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm or 6 mm. Through such an arrangement, the first burner 1411 and the second burner 1412 are made as close as possible, which is beneficial to reducing the occupied space. In particular, it is also beneficial to use the flame formed by one of the first burner 1411 and the second burner 1412 to stabilize the flame of the other of the first burner 1411 and the second burner 1412.

[0066] Combination Figures 7 to 10 As shown, in some embodiments, the fire cover 1000 is provided with a first gas outlet channel 1500, the end of the first gas outlet channel 1500 constitutes a first flame port 1411, and the first gas outlet channel 1500 is provided with at least one first corner 1540, and the first corner 1540 is provided upstream of the first flame port 1411. The gas transmitted along the first gas outlet channel 1500 needs to flow through the first corner 1540 before being ejected from the first flame port 1411. The setting of the first corner 1540 is conducive to further uniform mixing of the gas and to the deceleration of the gas, thereby improving the uniformity and stability of the gas ejected from the first flame port 1411.

[0067] For example, the first gas outlet channel 1500 includes a first upstream flow section 1510, a first midstream flow section 1520 and a first downstream flow section 1530. The first upstream flow section 1510 intersects with the first midstream flow section 1520 to form a first corner 1540. The first midstream flow section 1520 intersects with the first downstream flow section 1530 to form a first corner 1540. The end of the first downstream flow section 1530 forms a first burner 1411. Specifically, the gas entering the burner 100 flows along the first gas outlet channel 1500 and is finally discharged from the first burner 1411. The first upstream flow section 1510 is located upstream of the first midstream flow section 1520. The first midstream flow section 1520 is located upstream of the first downstream flow section 1530. The gas flows through the first upstream flow section 1510, the first midstream flow section 1520 and the first downstream flow section 1530 in sequence and is finally discharged from the first burner 1411. In this embodiment, the first upstream flow section 1510 and the first midstream flow section 1520 intersect to form a first corner 1540, and the gas needs to turn when flowing from the first upstream flow section 1510 to the first midstream flow section 1520. The first midstream flow section 1520 and the first downstream flow section 1530 intersect to form a first corner 1540, and the gas also needs to turn when flowing from the first midstream flow section 1520 to the first downstream flow section 1530. This is beneficial to further evenly mixing the gas and to reducing the speed of the gas, thereby improving the uniformity and stability of the gas ejected from the first burner 1411.

[0068] Combination Figures 7 to 10 As shown, in some embodiments, the fire cover 1000 is provided with a second gas outlet channel 1600, the end of the second gas outlet channel 1600 constitutes a second flame port 1412, and the second gas outlet channel 1600 is provided with at least one second corner 1640, and the second corner 1640 is provided upstream of the second flame port 1412. The gas transmitted along the second gas outlet channel 1600 needs to flow through the second corner 1640 before being ejected from the second flame port 1412. The setting of the second corner 1640 is conducive to further uniform mixing of the gas and to the reduction of the speed of the gas, thereby improving the uniformity and stability of the gas ejected from the second flame port 1412.

[0069] For example, the second gas outlet channel 1600 includes a second upstream flow segment 1610 and a second downstream flow segment 1630, the second upstream flow segment 1610 and the second downstream flow segment 1630 intersect to form a second corner 1640, and the end of the second downstream flow segment 1630 forms a second burner 1412. Specifically, the gas entering the burner 100 flows along the second gas outlet channel 1600 and is finally discharged from the second burner 1412. The second upstream flow segment 1610 is located upstream of the second downstream flow segment 1630, and the gas flows through the second upstream flow segment 1610 and the second downstream flow segment 1630 in sequence, and is finally discharged from the second burner 1412. In this embodiment, the second upstream flow segment 1610 and the second downstream flow segment 1630 intersect to form a second corner 1640. The gas needs to turn when flowing from the second upstream flow segment 1610 to the second downstream flow segment 1630. This is beneficial for further uniform mixing of the gas and for reducing the speed of the gas, thereby improving the uniformity and stability of the gas ejected from the second burner 1412.

[0070] Combination Figures 7 to 10 As shown, in some embodiments, the first air outlet channel 1500 includes a first downstream flow segment 1530, the end of the first downstream flow segment 1530 constitutes a first flame port 1411, and the first downstream flow segment 1530 is inclined from bottom to top away from the center of the fire cover 1000. The orientation in this article is based on the installation of the gas stove in the use environment. The side of the gas stove facing the ground is the bottom, and the side facing away from the ground is the top. Through the setting of the first downstream flow segment 1530, the flame formed by the first flame port 1411 can achieve a large-scale heating of the cooker. Similarly, the second air outlet channel 1600 includes a second downstream flow segment 1630, the end of the second downstream flow segment 1630 constitutes a second flame port 1412, and the second downstream flow segment 1630 is inclined from bottom to top away from the center of the fire cover 1000, so that the flame formed by the second flame port 1412 can achieve a large-scale heating of the cooker.

[0071] Combination Figures 11 to 13 As shown, in some embodiments, the first downstream flow segment 1530 of the first air outlet channel 1500 is inclined from bottom to top toward the center of the fire cover 1000, and the second downstream flow segment 1630 of the second air outlet channel 1600 is inclined from bottom to top toward the center of the fire cover 1000. Since the inner burner 1420 is closer to the center of the fire cover 1000 than the first burner 1411 and the second burner 1412, the first downstream flow segment 1530 and the second downstream flow segment 1630 are arranged in this way, which will be more conducive to the fire transfer between the first burner 1411, the second burner 1412 and the inner burner 1420.

[0072] Combination Figure 4As shown, in some embodiments, the outer fire cover 1100 includes a second outer fire cover 1120 and a third outer fire cover 1130, the second outer fire cover 1120 surrounds the third outer fire cover 1130, and the aforementioned second fire port 1412 is provided between the second outer fire cover 1120 and the third outer fire cover 1130, and the middle fire cover 1300 is provided between the third outer fire cover 1130 and the inner fire cover 1200 so as to block the space between the outer fire cover 1100 and the inner fire cover 1200, so that the second fire port 1412 and the inner fire port 1420 are arranged in sequence from the outside to the inside, that is, the second fire port 1412 is away from the center of the fire cover 1000 relative to the inner fire port 1420.

[0073] Furthermore, combined with Figure 4 As shown, the outer fire cover 1100 also includes a first outer fire cover 1110, which surrounds the second outer fire cover 1120, and a first flame port 1411 is formed between the first outer fire cover 1110 and the second outer fire cover 1120, so that the first flame port 1411, the second flame port 1412 and the inner flame port 1420 are arranged in sequence from the outside to the inside, that is, the first flame port 1411 is far away from the center of the fire cover 1000 relative to the second flame port 1412 and the inner flame port 1420, and the inner flame port 1420 is close to the center of the fire cover 1000 relative to the first flame port 1411 and the second flame port 1412, and the second flame port 1412 is located between the first flame port 1411 and the second flame port 1412, that is, the first flame port 1411 is closer to the outside, and the inner flame port 1420 is closer to the inside. In some cases, the inner flame port 1420 can be exactly in the center of the fire cover 1000, which is more conducive to uniform temperature distribution.

[0074] It is understandable that the middle fire cover 1300 and the outer fire cover 1100 can be separate components, or at least part of the middle fire cover 1300 and the outer fire cover 1100 can be integrally formed, and the middle fire cover 1300 and the inner fire cover 1200 can be separate components, or at least part of the middle fire cover 1300 and the inner fire cover 1200 can be integrally formed. Figures 1 to 4 As shown, the middle fire cover 1300, the outer fire cover 1100 and the inner fire cover 1200 are separate components and are assembled and matched. Figures 14 to 16 As shown, the middle fire cover 1300 and the third outer fire cover 1130 are integrally formed (ie, the middle fire cover 1300 and the third outer fire cover 1130 are included in the same component), and the middle fire cover 1300 and the inner fire cover 1200 are separate components.

[0075] In some embodiments, the number of first burners 1411 is multiple, and multiple means two or more, that is, the number of first burners 1411 is at least two, and the multiple first burners 1411 are arranged alternately in a ring shape, for example, the multiple first burners 1411 are arranged alternately in a ring shape along the circumference of the fire cover 1000, and the circumference can be understood as the direction surrounding the center of the fire cover 1000. The multiple first burners 1411 spray gas to generate flames, which can achieve large-scale heating of the cooker. In addition to the above situation, it can also be combined with Figures 1 to 4 As shown, in some embodiments, the first flame opening 1411 is in the shape of an annular seam, and the annular seam-shaped first flame opening 1411 can also achieve large-area heating of the cooker.

[0076] In some embodiments, the number of the second burners 1412 is multiple, and multiple means two or more, that is, the number of the second burners 1412 is at least two, and the multiple second burners 1412 are arranged alternately in a ring shape, for example, the multiple second burners 1412 are arranged alternately in a ring shape along the circumference of the fire cover 1000, and the circumference can be understood as the direction surrounding the center of the fire cover 1000. The multiple second burners 1412 spray gas to generate flames, which can achieve large-scale heating of the cooker. In addition to the above situation, it can also be combined with Figures 1 to 4 As shown, in some embodiments, the second flame opening 1412 is in the shape of an annular seam, and the annular seam-shaped second flame opening 1412 can also achieve large-area heating of the cooker.

[0077] Combination Figures 1 to 4 As shown, in some embodiments, the number of inner burners 1420 is multiple, and multiple means two or more, that is, the number of inner burners 1420 is at least two, and the multiple inner burners 1420 are arranged alternately or densely in an annular shape. In addition to the above situation, in some embodiments, the inner burners 1420 are in the shape of an annular gap.

[0078] The first burner 1411 is away from the center of the fire cover 1000 relative to the second burner 1412. When the first burner 1411 includes multiple burners and is arranged in a ring shape, the multiple first burners 1411 surround the second burner 1412 (the second burner 1412 can be multiple or in a ring shape). When the first burner 1411 is in a ring shape, the first burner 1411 in a ring shape surrounds the second burner 1412 (the second burner 1412 can be multiple or in a ring shape). The second burner 1412 is away from the center of the fire cover 1000 relative to the inner burner 1420. When the second burner 1412 includes multiple burners and is arranged in a ring shape, the multiple second burners 1412 surround the inner burner 1420 (the inner burner 1420 can be multiple or in a ring shape). When the second burner 1412 is in a ring shape, the second burner 1412 in a ring shape surrounds the inner burner 1420 (the inner burner 1420 can be multiple or in a ring shape).

[0079] The second aspect of the present application discloses a burner 100, the burner 100 comprises a burner head 2000 and the above-mentioned fire cover 1000, the fire cover 1000 is arranged on the burner head 2000, the fire cover 1000 comprises an outer fire cover 1100, an inner fire cover 1200 and a middle fire cover 1300, the outer fire cover 1100 surrounds the inner fire cover 1200, the middle fire cover 1300 shields the space between the outer fire cover 1100 and the inner fire cover 1200, the outer fire cover 1100 is provided with an outer fire port 1410, and the inner fire cover 1200 is provided with an inner fire port 1420. It can be understood that the fire cover 1000 of the burner 100 of this embodiment adopts the technical solution of the above-mentioned embodiment, and therefore at least has the beneficial effects brought by the technical solution of the above-mentioned embodiment, which will not be repeated here.

[0080] Furthermore, the first burner 1411 is used for ejecting induced air and gas, the second burner 1412 is used for ejecting blast air and gas, and the inner burner 1420 is used for ejecting induced air and gas. Specifically, the second burner 1412 is closer to the center of the burner 100 (fire cover 1000) relative to the first burner 1411, and the inner burner 1420 is closer to the center of the burner 100 (fire cover 1000) relative to the second burner 1412, that is, when observing the burner 100 from top to bottom, the first burner 1411 is closer to the outside than the second burner 1412 and the inner burner 1420, and the inner burner 1420 is closer to the inside than the first burner 1411 and the second burner 1412, and the second burner 1412 is between the first burner 1411 and the inner burner 1420.

[0081] The second burner 1412 is used for supplying blast air and gas to be ejected. The blast air and gas enter the interior of the burner 100, and then are ejected from the interior of the burner 100 through the second burner 1412, and are ignited to form a flame. The gas supply can come from bottled liquefied gas or pipeline natural gas. The gas stove includes a valve body. After the valve body is opened, the gas is transmitted along the gas pipeline, flows through the valve body and is ejected through a nozzle. The gas ejected from the nozzle is ejected into the interior of the burner 100. In this process, blast air is provided. The blast air is generated by a fluid machine, for example, by forced blowing of the fan 4000. The blast air enters the interior of the burner 100 and mixes with the gas (the blast air is primary air), and then is ejected from the second burner 1412 with the gas. Compared with the induced air, the blast air can provide more oxygen, so that the gas ejected from the second burner 1412 can be in an oxygen-rich combustion state, thereby fully burning the gas ejected from the second burner 1412 (the flame generated by the second burner 1412 can still draw in secondary air from the surrounding environment to participate in combustion).

[0082] The first burner 1411 is used for ejecting the induced air and gas. The induced air and gas enter the interior of the burner 100 and then eject from the interior of the burner 100 through the first burner 1411 to be ignited to form a flame. The gas supply can come from bottled liquefied gas or pipeline natural gas. The gas stove includes a valve body. After the valve body is opened, the gas is transmitted along the gas pipeline, flows through the valve body and is ejected through a nozzle. The gas ejected from the nozzle is ejected into the interior of the burner 100. In the process of gas being ejected into the interior of the burner 100, air is simultaneously ejected. For the ejection of air, please refer to the relevant technology. It is generally based on the Venturi principle. In the process of gas being ejected into the interior of the burner 100, a negative pressure is formed on the surrounding environment, so that the air of the surrounding environment is synchronously ejected into the interior of the burner 100 along with the injection of the gas (this part of the air that enters the interior of the burner 100 through the ejection effect is called ejected air, and the ejected air is primary air). The ejected air and gas are mixed inside the burner 100 and ejected from the first burner 1411, and then ignited to form a flame. When the induced air ejected from the first burner 1411 is insufficient to support the combustion of the gas ejected from the first burner 1411, it is necessary to supplement secondary air. Since the second burner 1412 ejects blast air, the blast air ejected from the second burner 1412 can provide enough oxygen, so that the blast air ejected from the second burner 1412 can not only participate in the combustion of the gas ejected from the second burner 1412, but also provide excess oxygen to supplement the gas ejected from the first burner 1411, to assist in the combustion of the gas ejected from the first burner 1411. Compared with supplementing secondary air from the surrounding environment by suction, the excess oxygen provided by the blast air ejected from the second burner 1412 is more actively supplemented to the gas ejected from the first burner 1411. Through such a setting, the gas ejected from the first burner 1411 can be fully burned (in this case, the flame generated by the first burner 1411 can still suck the secondary air from the surrounding environment to participate in the combustion).

[0083] Similarly, the inner burner 1420 is used for ejecting induced air and gas. The induced air and gas enter the interior of the burner 100, and then eject from the interior of the burner 100 through the inner burner 1420, and are ignited to form a flame. The gas supply can come from bottled liquefied gas or pipeline natural gas. The gas stove includes a valve body. After the valve body is opened, the gas is transmitted along the gas pipeline, flows through the valve body and is ejected through the nozzle. The gas ejected from the nozzle is ejected into the interior of the burner 100. In the process of the gas being ejected into the interior of the burner 100, the air is ejected synchronously. The induced air and gas enter the interior of the burner 100, mix, and then eject from the inner burner 1420, and then are ignited to form a flame. When the induced air ejected from the inner burner 1420 is insufficient to support the combustion of the gas ejected from the inner burner 1420, it is necessary to supplement the secondary air. Since the second burner 1412 ejects blast air, the blast air ejected from the second burner 1412 can provide enough oxygen, so that the blast air ejected from the second burner 1412 can not only participate in the combustion of the gas ejected from the second burner 1412, but also provide excess oxygen to supplement the gas ejected from the inner burner 1420, thereby assisting the combustion of the gas ejected from the inner burner 1420. Compared with supplementing the secondary air from the surrounding environment by the suction effect, , the excess oxygen provided by the blast air ejected from the second burner 1412 is more actively supplemented to the gas ejected from the inner burner 1420. By such an arrangement, the fuel gas ejected from the inner burner 1420 can be fully burned (in this case, the flame generated by the inner burner 1420 can still draw in secondary air from the surrounding environment to participate in the combustion). When the inner fire cover 1200 is a porous ceramic plate, the flame formed by the inner burner 1420 can reduce the demand for secondary air, and there is no need to even supplement secondary air (that is, there is no need to draw in the surrounding air and no need for excess oxygen ejected from the second burner 1412).

[0084] Through the above solution, the gas ejected from the first burner 1411, the second burner 1412 and the inner burner 1420 is fully burned, with high combustion efficiency, which is beneficial to improving the thermal efficiency of the gas stove. It can be understood that the full combustion mentioned herein is relative to the combustion state of only injecting air and entraining air from the surrounding environment (i.e., relatively more full).

[0085] Combination Figures 1 to 6As shown, the burner head 2000 is provided with a first cavity 2110, a second cavity 2120 and a third cavity 2130. When the fire cover 1000 is arranged on the burner head 2000, it respectively encloses the first cavity 2110, the second cavity 2120 and the third cavity 2130. The first burner port 1411 is connected with the first cavity 2110, and the induced air and gas enter into the first cavity 2110 and are ejected through the first burner port 1411. The second burner port 1412 is connected with the second cavity 2120, and the blast air and gas enter into the second cavity 2120 and are ejected through the second burner port 1412. The inner burner port 1420 is connected with the third cavity 2130, and the induced air and gas enter into the third cavity 2130 and are ejected through the inner burner port 1420.

[0086] It can be understood that since the first burner 1411 and the inner burner 1420 are both used for induced air and gas ejection, the first cavity 2110 and the third cavity 2130 can be designed to be connected on the burner head 2000. The induced air and gas can first enter the first cavity 2110 and then enter the third cavity 2130, and finally be ejected from the first burner 1411 and the inner burner 1420. The induced air and gas can also first enter the third cavity 2130 and then enter the first cavity 2110, and finally be ejected from the first burner 1411 and the inner burner 1420.

[0087] Continue to combine Figures 1 to 6 As shown, in some embodiments, the burner 100 also includes a first ejector tube 3100, a second ejector tube 3200 and a third ejector tube 3300. The first ejector tube 3100 is connected to the first cavity 2110, and the first ejector tube 3100 is used to receive ejected air and gas. The second ejector tube 3200 is connected to the second cavity 2120, and the second ejector tube 3200 is used to receive blast air and gas. The third ejector tube 3300 is connected to the third cavity 2130, and the third ejector tube 3300 is used to receive ejected air and gas.

[0088] Specifically, the first ejector tube 3100 has a Venturi structure, and the first ejector tube 3100 is connected to the burner head 2000, so that the first ejector tube 3100 and the first cavity 2110 are connected, and the air inlet end 3110 of the first ejector tube 3100 cooperates with the nozzle, and the nozzle is aimed at the air inlet end 3110 of the first ejector tube 3100 to spray gas. At the same time, negative pressure is formed in the surrounding environment to eject the air, and the ejected air and gas are transported to the first cavity 2110 for mixing, and finally ejected from the first burner 1411.

[0089] The second ejector tube 3200 has a Venturi structure, and the second ejector tube 3200 is connected to the furnace head 2000, so that the second ejector tube 3200 is connected to the second cavity 2120, and the air inlet end 3210 of the second ejector tube 3200 cooperates with the nozzle, and the nozzle is aimed at the air inlet end 3210 of the second ejector tube 3200 to spray the gas. At the same time, the blast air enters through the air inlet end of the second ejector tube 3200, for example, by forced blasting by the fan 4000, and the blast air and the gas are transported to the second cavity 2120 for mixing, and finally ejected from the second burner 1412. The fan 4000 can be connected and fixed to the second ejector tube 3200, which is more convenient for the fan 4000 to cooperate with the air inlet end 3210 of the second ejector tube 3200.

[0090] The third ejector tube 3300 has a Venturi structure, and the third ejector tube 3300 is connected to the burner head 2000, so that the third ejector tube 3300 and the third cavity 2130 are in communication, and the air inlet end 3310 of the third ejector tube 3300 cooperates with the nozzle, and the nozzle is aimed at the air inlet end 3310 of the third ejector tube 3300 to spray gas, and at the same time, a negative pressure is formed on the surrounding environment to eject the air, and the ejected air and the gas are transported to the third cavity 2130 for mixing, and finally ejected from the inner burner 1420.

[0091] Gas is supplied through the first ejector pipe 3100 , the second ejector pipe 3200 and the third ejector pipe 3300 respectively, and when the fire is at minimum, the flame can be formed only through the inner burner 1420 .

[0092] In some embodiments, the flame generated by the first burner 1411 is suitable for stabilizing the flame of the second burner 1412. Specifically, the second burner 1412 ejects blast air and gas. The inventors have found that although the blast air can achieve full combustion of the gas, the blast air causes the gas flow rate ejected from the second burner 1412 to be relatively large, and the speed at which the gas leaves the second burner 1412 is greater than the combustion speed of the gas, which easily causes the flame separation phenomenon. Since the first burner 1411 ejects induced air and gas, the induced air is naturally induced by spraying the gas through a nozzle, and does not need to be generated based on fluid machinery. The speed at which the gas leaves the first burner 1411 is not much different from the combustion speed of the gas, and stable combustion can be achieved, that is, the flame state formed by the first burner 1411 is stable. Since the flame formed by the first burner 1411 is more stable, the flame generated by the first burner 1411 can be used to stabilize the flame of the second burner 1412.

[0093] That is to say, in addition to heating the cooker, the flame formed by the first burner 1411 also serves as a flame stabilizing hole / flame stabilizing groove. In summary, since the first burner 1411 is used to inject air and gas, the gas ejected from the first burner 1411 has a more stable combustion state. By adjusting the position, angle or distance of the first burner 1411 and the second burner 1412, the flame formed by the first burner 1411 ignites the gas ejected from the second burner 1412 (such as the flame formed by the first burner 1411 heats the root of the gas ejected from the second burner 1412 and thus ignites the gas ejected from the second burner 1412). When the gas quickly leaves the second burner 1412, it is ignited by the flame formed by the first burner 1411. In this way, the gas that quickly leaves the second burner 1412 burns at the second burner 1412, thereby suppressing the occurrence of flame separation in the second burner 1412, stabilizing the flame of the second burner 1412 and further improving the combustion efficiency. For example, the first burner 1411 and the second burner 1412 are arranged on the same wall, so that the first burner 1411 and the second burner 1412 can be as close as possible, which is conducive to the flame generated by the first burner 1411 to stabilize the flame of the second burner 1412.

[0094] The third aspect of the present application discloses a gas stove, which includes the above-mentioned burner 100. It can be understood that the burner 100 of the gas stove of this embodiment adopts the technical solution of the above-mentioned embodiment, and therefore has at least the beneficial effects brought by the technical solution of the above-mentioned embodiment, which will not be repeated here.

[0095] The gas stove includes a valve body (not shown in the figure), which is used to adjust the amount of gas. When the valve body interrupts the gas supply to the second burner 1412, the valve body can maintain the gas supply to the first burner 1411 and / or the inner burner 1420, and at this time, the fan 4000 is still in working condition.

[0096] Specifically, the valve body is a device for regulating the gas flow rate. The inlet of the valve body is connected to the gas pipeline, and the outlet of the valve body is connected to the nozzle. The amount of gas that eventually leads to the first burner 1411, the second burner 1412, and the inner burner 1420 is regulated by the regulating function of the valve body. The specific structure of the valve body can be referred to in the relevant technology and will not be described in detail here. When the valve body is adjusted until the gas supply to the second burner 1412 is interrupted, the gas to the first burner 1411 and / or the inner burner 1420 can still be maintained, and the fan 4000 is also in working state at this time. In this way, the air (blast air) forcibly transported by the fan 4000 is ejected through the second burner 1412 and supplemented to the gas ejected from the first burner 1411 and / or the inner burner 1420. It is understandable that the fan 4000 can be started synchronously when the gas stove is ignited. No matter how the valve body is adjusted, the fan 4000 remains in operation until the gas stove is turned off. Of course, other control logics can also be used, which will not be elaborated here.

[0097] The above description is only a preferred embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural changes made based on the concept of the present application and the contents of the present application description and drawings, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A fire cover (1000), characterized in that: include: An external fire cover (1100) is provided with an external fire port (1410); An inner fire cover (1200) is provided with an inner fire port (1420), and the inner fire cover (1200) is surrounded by the outer fire cover (1100); and The middle fire cover (1300) covers the space between the outer fire cover (1100) and the inner fire cover (1200).

2. The fire cover (1000) according to claim 1, characterized in that: The inner fire cover (1200) and the middle fire cover (1300) are connected and fixed; and / or, the inner fire cover (1200) is arranged at the center of the fire cover (1000); And / or, the inner fire cover (1200) is a porous ceramic plate.

3. The fire cover (1000) according to claim 1, characterized in that: The top surface of the medium fire cover (1300) is a plane; and / or, the top surface of the medium fire cover (1300) constitutes the top surface of the fire cover (1000); And / or, the middle fire cover (1300) is suitable for being abutted by the inner wall of the outer fire cover (1100) along the radial direction of the fire cover (1000).

4. The fire cover (1000) according to claim 1, characterized in that: The outer flame port (1410) includes a first flame port (1411) and a second flame port (1412), and the second flame port (1412) is closer to the center of the flame cover (1000) relative to the first flame port (1411).

5. The fire cover (1000) according to claim 4, characterized in that: The flame generated by one of the first burner (1411) and the second burner (1412) is suitable for stabilizing the flame of the other.

6. The fire cover (1000) according to claim 4 or 5, characterized in that: The first crater (1411) and the second crater (1412) are arranged on the same wall, and the thickness of the wall between the first crater (1411) and the second crater (1412) is not greater than 6 mm.

7. The fire cover (1000) according to claim 4 or 5, characterized in that: The fire cover (1000) is provided with a first gas outlet channel (1500), the end of the first gas outlet channel (1500) forms the first burner (1411), and the first gas outlet channel (1500) is provided with at least one first corner (1540) upstream of the first burner (1411); And / or, the fire cover (1000) is provided with a second air outlet channel (1600), the end of the second air outlet channel (1600) constitutes the second flame port (1412), and the second air outlet channel (1600) is provided with at least one second corner (1640) upstream of the second flame port (1412).

8. The fire cover (1000) according to claim 1, characterized in that: The outer fire port (1410) includes a second fire port (1412), and the outer fire cover (1100) includes a second outer fire cover (1120) and a third outer fire cover (1130), the second outer fire cover (1120) surrounds the third outer fire cover (1130) and the second fire port (1412) is provided between the second outer fire cover (1120) and the third outer fire cover (1130), and the middle fire cover (1300) is provided between the third outer fire cover (1130) and the inner fire cover (1200) to shield the space between the outer fire cover (1100) and the inner fire cover (1200).

9. The fire cover (1000) according to claim 8, characterized in that: The outer fire port (1410) further includes a first fire port (1411), and the outer fire cover (1100) further includes a first outer fire cover (1110), wherein the first outer fire cover (1110) surrounds the second outer fire cover (1120) and the first fire port (1411) is provided between the first outer fire cover (1110) and the second outer fire cover (1120).

10. The fire cover (1000) according to claim 8, characterized in that: The middle fire cover (1300) and the third outer fire cover (1130) are integrally formed.

11. The fire cover (1000) according to claim 4, characterized in that: The number of the first burners (1411) is multiple, and the multiple first burners (1411) are arranged alternately in a ring shape and surround the second burner (1412); And / or, the number of the second burners (1412) is multiple, and the multiple second burners (1412) are arranged alternately in a ring shape and surround the inner burner (1420); And / or, the number of the inner fire ports (1420) is multiple.

12. The fire cover (1000) according to claim 4, characterized in that: The first burner (1411) is in the shape of an annular seam and surrounds the second burner (1412); and / or, the second burner (1412) is in the shape of an annular seam and surrounds the inner burner (1420); And / or, the inner fire port (1420) is in the shape of an annular seam.

13. A burner (100), characterized in that: The burner (100) comprises a burner head (2000) and a fire cover (1000) according to any one of claims 1 to 12 and arranged on the burner head (2000).

14. The burner (100) according to claim 13, characterized in that The inner burner (1420) is suitable for supplying fuel gas and induced air for ejection.

15. A gas stove, characterized in that: Comprising the burner (100) according to claim 13 or 14.

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