A burner air damper adjusting mechanism and a cooking appliance assembly

Abstract

The present invention discloses a burner air damper adjusting mechanism and a cooking appliance assembly, comprising: a burner base, an air damper plate and a nozzle. A Venturi ejector tube is provided on the burner base, and an air damper hole is provided at the end of the Venturi ejector tube. The feature lies in that an air damper adjuster is provided on the burner base, an air damper plate mounting hole corresponding to the air damper hole is provided on the air damper adjuster, and a plurality of air inlet notches are formed around the air damper mounting hole. The air damper plate is of a circular plate structure, the periphery of the air damper plate is closely fitted with the inner wall of the air damper mounting hole, and the depth of the air damper plate in the air damper mounting hole is adjustable. A through hole is formed at the central position of the air damper plate, and the gas outlet of the nozzle passes through the through hole. Compared with the prior art, the present invention can make the mixture of air and gas more uniform and is applicable to both direct-insert type and shaft-tube type nozzles.

Description

Technical Field

[0001] The present invention relates to the technical field of burners, and particularly to a burner air damper adjusting mechanism and a cooking appliance assembly. Background Art

[0002] In the prior art, there are generally two schemes for adjusting the air damper of a burner: adjusting the distance and adjusting the area. Among them, the scheme of adjusting the area is generally to set a fan-shaped notch at the inlet of the burner ejector pipe, and then use a fan-shaped notch piece that rotates in cooperation with the fan-shaped notch to change the inlet area. As described in the Chinese utility model patents with publication numbers CN201110560Y and CN204460316U.

[0003] Relatively speaking, the adjustable range of the split port of the scheme of adjusting the distance is larger. For adjusting the distance, the existing scheme is to install a circular piece structure on the nozzle and adjust the distance from the nozzle to the burner base through threaded connection. For example, a Chinese utility model patent with publication number CN202350115U discloses a simple-structured manual adjusting device for the air damper of a gas cooking appliance, which includes a nozzle, a Venturi ejector pipe with an air damper hole at the end, and an air damper piece for blocking the air damper hole. The end face of the Venturi ejector pipe with the air damper hole is provided with an intermediate cross baffle. The nozzle is tubular, the rear end of the nozzle is detachably and fixedly connected to the intermediate cross baffle, the front end of the nozzle has a limit step, the air damper piece is threadedly sleeved on the nozzle, and the outer surface of the nozzle between the end face of the Venturi ejector pipe and the limit step of the nozzle is provided with an external thread. The beneficial effect of this utility model is that the air damper piece adjusts the gap with the end face of the air damper hole through a threaded structure to adjust the air outlet intensity, with a simple structure and convenient use.

[0004] However, the existing air damper adjustment scheme has the following defects: 1) The burner base needs to be provided with a positioning structure to fix the position of the nozzle. The positioning structure is designed too close to the air outlet of the nozzle in the cavity, which has a great influence on the mixing of air and gas. 2) The adjusting piece is designed as a simple original piece, and the adjustable distance is small. After exceeding the adjustment range, turning the adjusting piece away has no effect. 3) The base and the air damper structure are used in a matching manner and cannot be used interchangeably in direct-insert type and shaft tube type cooking appliances, and it is not easy to judge the adjustment distance. Summary of the Invention

[0005] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a burner air damper adjusting mechanism in which the mixing of air and gas is more uniform and which is applicable to both direct-insert type and shaft tube type structures.

[0006] The present invention also provides a cooking appliance assembly having the above-mentioned burner air damper adjusting mechanism.

[0007] To achieve the above object, the present invention adopts the following technical solutions.

[0008] A burner air damper adjusting mechanism, comprising: a burner base, an air damper plate and a nozzle. A Venturi ejector tube is provided on the burner base, and an air damper hole is provided at the end of the Venturi ejector tube. The feature lies in that an air damper adjuster is provided on the burner base, an air damper plate mounting hole corresponding to the air damper hole is provided on the air damper adjuster, and a plurality of air inlet slots are opened around the air damper mounting hole. The air damper plate is of a disc structure, the periphery of the air damper plate is closely fitted with the inner wall of the air damper mounting hole, and the depth of the air damper plate in the air damper mounting hole is adjustable. A through hole is opened at the center position of the air damper plate, and the air outlet of the nozzle passes through the through hole.

[0009] More preferably, the outer periphery of the air damper plate is in threaded fit or snap fit with the inner side of the air damper mounting hole.

[0010] More preferably, the air damper adjuster and the burner base are two different discrete parts, and the air damper adjuster is fixedly installed on the burner base through a fixing member.

[0011] More preferably, the air damper adjuster and the burner base are an integral part formed together.

[0012] More preferably, an adjusting portion for changing the depth of the air damper plate is provided on the air damper plate.

[0013] More preferably, the adjusting portion is composed of a plurality of adjusting bosses, and each adjusting boss is strip-shaped and has a structure diverging from the center to the periphery.

[0014] More preferably, the air damper adjuster includes an annular ring, and each air inlet slot is spaced by a plurality of brackets extending from the annular ring. Internal threads are provided on the inner sides of the brackets, and external threads are provided on the periphery of the air damper plate to cooperate with the internal threads.

[0015] More preferably, a limiting step is further provided in the air damper plate mounting hole of the air damper adjuster, and the deepest position of the air damper plate in the air damper adjuster is limited by the limiting step.

[0016] More preferably, the air damper plate is an air damper plate for cooperating with a direct-insert type nozzle. In this air damper plate, the through hole is a straight through hole with equal diameter, and the direct-insert type nozzle is directly inserted into the through hole.

[0017] More preferably, the air damper plate is an air damper plate for cooperating with a shaft tube type nozzle. In this air damper plate, the through hole is a stepped hole, the diameter of the stepped hole on the side close to the burner base is smaller, and internal threads are additionally provided in the smaller hole for cooperating with the shaft tube type nozzle.

[0018] More preferably, an externally protruding external thread portion is provided on the outer periphery of the damper plate, and an external thread is formed on the external thread portion.

[0019] More preferably, a limiting hole is provided on one side of the damper plate close to the nozzle, and the limiting hole is concave toward the side close to the burner base to increase the adjustment range of the damper plate.

[0020] More preferably, a conical portion is provided on the damper plate, and the sharper end of the conical portion is arranged close to the side where the burner base is located; the conical portion is coaxially arranged with the through hole.

[0021] A cooking appliance assembly, characterized in that it has a burner damper adjustment mechanism as described above, a gas valve and a burner head; a nozzle is installed on the gas valve and is preliminarily limited by a rigid gas pipe connected to the gas valve, and the burner head is installed on the burner base for flame splitting combustion.

[0022] The beneficial effects of the present invention are as follows.

[0023] First, by providing a damper regulator and an air inlet slot, and setting the damper plate into a structure with a tight fit around the perimeter and adjustable depth; during actual operation, by changing the depth of the damper plate, the air inlet area of the air inlet slot can be changed, thereby achieving the purpose of adjusting the primary air intake of the burner. Compared with the prior art, the present invention cancels the nozzle positioning mechanism on the burner base and instead uses the damper plate for limiting, increasing the distance between the gas outlet of the nozzle and the primary air inlet (air inlet slot), reducing the influence on gas mixing, and providing a structural basis for uniform gas mixing; moreover, the surrounding setting method of the air inlet slot can make the primary air and the gas fully mixed, and the gas mixing is more uniform.

[0024] Second, by providing a through hole on the damper plate that cooperates with the nozzle at the center position, regardless of the type of nozzle, only the corresponding damper plate needs to be replaced to achieve the universality of the damper adjustment device with direct-insert type and shaft-tube type burner bases.

[0025] Third, by providing a conical portion on the damper plate, part of the air can be blocked from entering, increasing the adjustable range of the damper and making it easier to control the primary air intake to adjust the flue gas and efficiency.

[0026] Fourth, the adjustment boss combined with the threaded fit structure of the damper plate and the damper regulator can not only make the damper plate better cooperate with human hands or other adjustment tools, and thus more conveniently change the depth of the damper plate; but also play an indicating role, facilitating the judgment of the position of the damper plate and the actual adjustment distance. Brief Description of the Drawings

[0027] Figure 1 The figure shows a schematic structural diagram of the burner damper adjustment mechanism provided by the present invention.

[0028] Figure 2 As shown Figure 1 is the structural decomposition diagram of

[0029] Figure 3 As shown is the assembly schematic diagram of the air damper regulator and the air damper blade.

[0030] Figure 4 As shown is the structural schematic diagram of the air damper regulator.

[0031] Figure 5 As shown is the structural schematic diagram of the air damper blade.

[0032] Figure 6 As shown is another structural schematic diagram of the air damper blade.

[0033] Figure 7 As shown is the working condition diagram of the direct plug-in nozzle.

[0034] Figure 8 As shown is the working condition diagram of the shaft tube nozzle.

[0035] Figure 9 As shown is the structural schematic diagram of the cooking appliance assembly provided by the present invention.

[0036] Explanation of the reference numerals.

[0037] 1: Burner base, 2: Air damper regulator, 3: Mounting screw, 4: Air damper blade, 5: Nozzle, 6: Gas valve, 7: Burner head.

[0038] 1-1: Air damper hole.

[0039] 2-1: Air damper mounting hole, 2-2: Air inlet notch, 2-3: Annular ring, 2-4: Mounting hole, 2-5: Bracket, 2-6: Limiting step.

[0040] 4-1: Through hole, 4-2: Adjusting boss, 4-3: External thread portion, 4-4: Limiting hole, 4-5: Limiting block. Detailed implementation manners

[0041] In the description of the present invention, it should be noted that for the orientation terms, if there are terms such as "center", "horizontal", "vertical", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and position relationships indicated are based on the orientation or position relationships shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present invention.

[0042] In addition, terms such as "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "at least" is one or more, unless otherwise specifically defined.

[0043] In the present invention, unless otherwise clearly defined and limited, terms such as "assembled", "connected", and "joined" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may also be a mechanical connection; it may be directly connected, or connected through an intermediate medium, and may be internally connected between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the invention, unless otherwise specified and limited, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "below", and "on top of" the second feature includes the first feature being directly above and diagonally above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "above", "below", and "beneath" the second feature includes the first feature being directly below or diagonally below the second feature, or merely indicating that the horizontal height of the first feature is lower than that of the second feature.

[0045] The following further describes the specific embodiments of the present invention in conjunction with the accompanying drawings of the specification, making the technical solutions and their beneficial effects of the present invention clearer and more definite. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0046] The additional aspects and advantages of the present invention will become apparent in the following description section, or be learned through the practice of the present invention.

[0047] Such as Figure 1 、 Figure 2As shown in the figure, a burner air damper adjusting mechanism includes: a burner base 1, an air damper regulator 2, mounting screws 3, an air damper plate 4, and a nozzle 5. There are two side-by-side Venturi ejector tubes provided on the burner base 1, and air damper holes 1-1 are provided at the ends of each of the Venturi ejector tubes; the air damper regulator 2 is fixedly mounted to the burner base 1 through the mounting screws 3. Air damper plate mounting holes 2-1 corresponding one-to-one to the two air damper holes 1-1 are provided on the air damper regulator 1, and a number of air inlet slots 2-2 are opened around the air damper mounting holes 2-1; the air damper plate 4 is of a disc structure, and the periphery of the air damper plate 4 is in threaded fit with the inner wall of the air damper mounting hole 2-1; a through hole 4-1 is opened at the center position of the air damper plate 4, and the air outlet of the nozzle 5 passes through the through hole 4-1, playing a role in the injection of gas and the diversion of air.

[0048] During actual operation, by rotating the air damper plate 4, the air inlet area of the air inlet slots 2-2 can be changed, thereby achieving the purpose of adjusting the primary air intake volume of the burner. Compared with the prior art, in this embodiment, the nozzle positioning mechanism on the burner base is cancelled, and instead, the air damper plate 4 is used for limiting, so that the distance between the air outlet of the nozzle 5 and the primary air inlet (air inlet slot) is increased, reducing the influence of gas mixing; moreover, the surrounding arrangement of the air inlet slots 2-2 can enable the air for primary air intake to be fully mixed with the gas, and the gas mixing is more uniform.

[0049] It should be noted that the number of Venturi ejector tubes is not necessarily two and can be set according to needs. The air damper regulator 2 can also be made into an integral structure with the burner base 1, and it is not necessary to make it into two separate parts in the way of this embodiment. When the air damper regulator 2 can also be made into an integral structure with the burner base 1, correspondingly, the mounting screws 3 can also be omitted, and the structure is more compact, only changing the traditional burner base structure. The mounting screws 3 can also be replaced by a snap-fit or welding fixing method; it is not limited to this embodiment.

[0050] Combined Figure 3 As shown in the figure, it is a schematic structural diagram of the air damper regulator 2 and the air damper plate 4 assembled together. It can be seen from this figure that a number of adjusting bosses 4-2 are provided on the air damper plate 4, and each of the adjusting bosses 4-2 is strip-shaped and has a structure diverging from the center to the periphery.

[0051] Here, the setting of the adjusting bosses 4-2 can not only make the air damper plate 4 better cooperate with human hands or other adjusting tools, and thus rotate the air damper plate more conveniently; but also play an indicating role, facilitating the judgment of the position of the air damper plate and the actual adjustment distance.

[0052] Obviously, those skilled in the art can use an adjusting groove or an adjusting part of other shapes to replace the above-mentioned adjusting boss according to different actual needs, which is not limited to this embodiment.

[0053] As another matching method between the air damper blade 4 and the air damper regulator 2, a snap-fit structure with a certain damping can also be adopted between the air damper blade 4 and the air damper regulator 2. When the air damper blade 4 is snap-connected to the air damper regulator 2, the air inlet area of the air inlet notch can be changed by applying a certain thrust or pulling force to the air damper blade; in this case, the adjusting part structures such as the adjusting boss may not play the role of indicating the adjusting distance.

[0054] Combined with Figure 4 As shown, it is a schematic structural diagram of the air damper regulator 2. It can be seen from this figure that the air damper regulator 2 is composed of two annular rings 2-3 of an integral structure, and the two annular rings 2-3 are symmetrically arranged. An installation hole 2-4 is provided at the intermediate transition part between the two annular rings 2-3 for cooperating with the installation screw 3 to fix the air damper regulator 2 to the burner base 1. In this embodiment, each air inlet notch 2-2 is formed by being spaced apart by a plurality of brackets 2-5 extending from the annular ring 2-3, and internal threads are provided on the inner sides of the brackets 2-5, and the internal threads cooperate with the external threads on the periphery of the air damper blade 4.

[0055] Obviously, those skilled in the art can set the two annular rings as two separate devices according to different actual needs, or can not require the symmetry of the two annular rings, which only makes the installation structure become complicated; as for the air inlet notch, it can be changed to a through hole penetrating the side wall of the annular ring; it is not limited to this embodiment.

[0056] Combined with Figure 5 As shown, it is an air damper blade 4 that cooperates with a direct-insert nozzle. In this air damper blade 4, its through hole 4-1 is a straight-through hole with an equal diameter, and the direct-insert nozzle 5 can be directly inserted into the through hole 4-1, as Figure 7 shown. For the convenience of setting the external thread, it is preferably that an outwardly protruding external thread portion 4-3 is further provided on the outer periphery of the air damper blade 4, and the external thread is formed on the external thread portion 4-3. Further, in order to ensure that the air damper blade 4 has a greater adjusting distance, it is preferably that a limiting hole 4-4 that cooperates with the nozzle 5 is further provided on the air damper blade 4; when the air damper blade 4 is adjusted left and right by rotation, the maximum adjusting distance reaches the limit when the limiting hole 4-4 contacts the nozzle, and the minimum distance reaches the full closed state when the air damper blade 4 contacts the air damper regulator 2.

[0057] Combined with Figure 6 As shown, it is an air damper blade 4 that cooperates with a shaft-type nozzle. In this air damper blade 4, its through hole 4-1 is a stepped hole, and the diameter of the side close to the burner base 1 is smaller, and internal threads are additionally provided in the smaller hole for cooperating with the shaft-type nozzle 5, and the cooperation structure is as Figure 8as shown. The damper plate is the same as the Figure 5 damper plate shown in terms of working principle. Correspondingly, an outwardly protruding external thread portion 4-3 is also provided on the outer periphery of the damper plate 4, and the external thread is formed on the external thread portion 4-3; a limiting hole 4-4 for cooperating with the nozzle 5 is also provided on the damper plate 4, and a limiting block 4-5 is also provided corresponding to the limiting hole 4-4 to better limit the maximum distance of the damper plate 4.

[0058] From the introduction of Figures 5 - 8 , it can be seen that the damper regulator 2 can make the burner bases of the direct-insert type and the shaft tube type universal. For different nozzles, only different damper plates 4 need to be selected during installation.

[0059] Combined with Figure 5 and Figure 6 as shown, a tapered portion is also provided on the damper plate 4, and the sharper end of the tapered portion is arranged closer to the side where the burner base 1 is located. Here, the advantage of adding the tapered portion to the damper plate 4 is that it can block part of the air from entering, making the adjustable range of the damper larger and making it easier to control the primary air intake to adjust the flue gas and efficiency.

[0060] Combined with Figure 7 and Figure 8 as shown, a limiting step 2-6 is also provided in the damper plate mounting hole 2-1 of the damper regulator 2 to limit the minimum distance of the damper plate 4 in the damper regulator through the limiting step 2-6. According to different actual needs, the limiting step 2-6 can be made deeper so as to change the gas velocity at the ejector tube when partially blocking the side hole, thereby adjusting the air intake and the mixing of air and gas.

[0061] As Figure 9 shown, it is a schematic structural diagram of a stove component provided by the present invention. This stove component adopts the above-mentioned burner damper regulating mechanism, including a gas valve 6 and a burner head 7. The nozzle 5 is installed on the gas valve 6 and is preliminarily limited by a rigid gas pipe connected to the gas valve 6, and the burner head 7 is installed on the burner base for flame distribution and combustion.

[0062] Through the description of the above structure and principle, those skilled in the art should understand that the present invention is not limited to the above specific embodiments. Improvements and substitutions using well-known technologies in the art based on the present invention all fall within the protection scope of the present invention. The protection scope of the present invention shall be defined by each claim item and its equivalents. Those parts not described in the specific embodiments are all prior art or common general knowledge.

Claims

1. A burner air damper adjusting mechanism, comprising: a burner base, an air damper plate and a nozzle. A Venturi ejector tube is provided on the burner base, and an air damper hole is provided at the end of the Venturi ejector tube. The feature lies in that an air damper adjuster is provided on the burner base, and an air damper plate mounting hole corresponding to the air damper hole is provided on the air damper adjuster. A plurality of air inlet slots are provided around the air damper plate mounting hole. The air damper adjuster includes an annular ring, and each air inlet slot is formed by being spaced apart by a plurality of brackets extending from the annular ring. A limiting step is further provided in the air damper plate mounting hole of the air damper adjuster to limit the deepest position of the air damper plate in the air damper adjuster. The air damper plate is of a disc structure, the periphery of the air damper plate is closely fitted with the inner wall of the air damper plate mounting hole, and the depth of the air damper plate in the air damper plate mounting hole is adjustable. A through hole is provided at the central position of the air damper plate, and the air outlet of the nozzle passes through the through hole; The air damper plate is an air damper plate for cooperating with a direct-insertion nozzle. In this air damper plate, the through hole is a straight-through hole with a constant diameter, and the direct-insertion nozzle is directly inserted into the through hole; Or, the air damper plate is an air damper plate for cooperating with a shaft-type nozzle. In this air damper plate, the through hole is a stepped hole, the diameter of the stepped hole on the side close to the burner base is smaller, and an internal thread is additionally provided in the smaller hole for cooperating with the shaft-type nozzle.

2. A burner air damper adjusting mechanism according to claim 1, characterized in that, The outer periphery of the air damper plate is in threaded fit or snap fit with the inner side of the air damper plate mounting hole.

3. A burner air damper adjusting mechanism according to claim 1, characterized in that, The air damper adjuster and the burner base are two different discrete parts, and the air damper adjuster is installed and fixed to the burner base through a fixing member; Or, the air damper adjuster and the burner base are an integral part formed together.

4. A burner air damper adjusting mechanism according to claim 1, characterized in that, An adjusting portion for changing the depth of the air damper plate is provided on the air damper plate.

5. A burner air damper adjusting mechanism according to claim 4, characterized in that, The adjusting portion is composed of a plurality of adjusting bosses, and each adjusting boss is strip-shaped and has a structure diverging from the center to the periphery.

6. A burner air damper adjusting mechanism according to claim 1, characterized in that, Internal threads are provided on the inner sides of the brackets, and external threads for cooperating with the internal threads are provided on the periphery of the air damper plate.

7. A burner air damper adjusting mechanism according to claim 2 or 6, characterized in that, An outwardly protruding external thread portion is provided on the outer periphery of the air damper plate, and an external thread is formed on the external thread portion; A limiting hole is provided on the side of the air damper plate close to the nozzle, and the limiting hole is concave towards the side close to the burner base to increase the adjustment range of the air damper plate.

8. A burner air damper adjusting mechanism according to claim 1, characterized in that, A conical portion is provided on the damper plate, and the sharper end of the conical portion is arranged close to the side where the burner base is located; the conical portion is coaxially arranged with the through hole.

9. A cooking appliance assembly, characterized in that it has a burner damper adjustment mechanism as described in any one of claims 1-8, as well as a gas valve and a burner head; a nozzle is installed on the gas valve and is preliminarily limited by a rigid gas pipe connected to the gas valve, and the burner head is installed on the burner base for flame distribution and combustion.

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