Gas distribution disc and gas stove

Abstract

The utility model relates to a gas distribution disc and a gas stove. The gas distribution disc comprises an inner ring gas channel and an outer ring gas channel, the base is connected to the inner ring gas channel, and a first gas inlet used for inputting mixed gas is formed in the base; the outer ring air channel is arranged on the inner ring air channel in a sleeving mode, and the outer ring air channel comprises a plurality of sub air channels which are sequentially communicated in an end-to-end mode; each outer ring air passage comprises a large-diameter end and a small-diameter end, the flow area of the sub-air passages is gradually reduced from the large-diameter end to the small-diameter end, and the small-diameter end of the previous sub-air passage is connected to the large-diameter end of the next sub-air passage; each gas transmission piece is provided with a gas transmission channel communicated with the first gas inlet, each gas transmission channel is provided with a gas outlet, the gas outlets are communicated with the outer ring gas channel, each gas transmission piece corresponds to one sub gas channel, and each gas outlet faces the large-diameter end of the corresponding sub gas channel, so that the mixed gas circulates from the large-diameter end to the small-diameter end. The gas distribution disc is beneficial for mixed gas to fill each sub-gas channel, so that the possibility that a flowing dead zone appears in the outer ring gas channel is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of gas stoves, in particular to a gas distribution plate and a gas stove. Background Art

[0002] The gas distribution plate is an important structure on the gas stove, which is used to divide the gas input from the burner into multiple streams and transport them in the direction of the fire cover. The gas distribution plate includes an inner ring air duct and an outer ring air duct. The inner ring air duct is connected to the burner, and the outer ring air duct is sleeved on the inner ring air duct and is provided with a gas groove. Since the distance between the outer ring air duct and the burner is relatively large, three straight channels are usually provided on the gas distribution plate to transmit the mixed gas (including gas and air) input from the burner to the gas groove of the outer ring air duct. However, in the existing gas distribution plate, the gas groove on the outer ring air duct is in a circular shape, and the straight channel is arranged along the radial direction of the outer ring air duct. The farther away from the straight channel in the gas groove, the more likely it is to have a flow dead zone, which affects the uniformity of the fire output of the gas distribution plate and has an adverse effect on the cooking effect of the gas stove. Utility Model Content

[0003] Based on this, it is necessary to provide a gas distribution plate and a gas stove to address the above problems, which can reduce the possibility of flow dead zones in the outer ring air duct, facilitate uniform fire from the fire distribution plate, and improve the cooking effect of the gas stove.

[0004] In order to solve the above problems, the utility model provides the following technical solutions:

[0005] A gas distribution plate, comprising:

[0006] Intracircle airway;

[0007] A base, connected to the inner ring air passage, wherein the base is provided with a first air inlet for inputting a mixed gas;

[0008] An outer ring airway is sleeved on the inner ring airway, the outer ring airway includes a plurality of sub-airways, and the plurality of sub-airways are connected end to end in sequence; each outer ring airway includes a large diameter end and a small diameter end, and the flow area of ​​the sub-airway gradually decreases from the large diameter end to the small diameter end, and the small diameter end of the previous sub-airway is connected to the large diameter end of the next sub-airway; and

[0009] A plurality of gas transfer components, each of which has a gas transfer channel connected to the first gas inlet, the gas transfer channel has a gas outlet, the gas outlet is connected to the outer ring gas channel, each of the gas transfer components corresponds to a sub-gas channel, and each of the gas outlets is arranged toward the large diameter end of the corresponding sub-gas channel so that the mixed gas can flow from the large diameter end toward the small diameter end.

[0010] The gas distribution plate has at least the following beneficial effects:

[0011] For each sub-gas channel, the mixed gas flowing into it has two sources, one source is the mixed gas flowing out of the corresponding gas transmission component, and the other source is the mixed gas flowing out of the small diameter end of the previous gas transmission component. The mixed gas from these two sources flows in from the large diameter end of the sub-gas channel and flows out from the small diameter end of the same sub-gas channel. From the large diameter end to the small diameter end, the flow area of ​​the sub-gas channel gradually decreases, which is conducive to the mixed gas filling each sub-gas channel, thereby reducing the possibility of flow dead zones in the outer ring gas channel, facilitating the uniform fire of the fire distribution plate, and improving the cooking effect of the gas stove.

[0012] In one embodiment, each of the sub-air channels has a first side wall and a second side wall that are arranged opposite to each other, the first side wall is close to the inner ring air channel, and the second side wall is far away from the inner ring air channel; the first side walls of each of the sub-air channels are located on the same cylindrical surface, and along the flow direction of the mixed gas, the second side wall gradually approaches the first side wall so that the flow area of ​​the sub-air channel gradually decreases.

[0013] Such an arrangement facilitates the manufacture of the outer ring airway.

[0014] In one embodiment, the second side wall extends along an involute line.

[0015] Such an arrangement is beneficial to improving the flow uniformity of the mixed gas and can reduce the friction resistance and pressure loss of the mixed gas during its flow in the sub-gas channel.

[0016] In one embodiment, each of the sub-air channels has a first side wall and a second side wall that are arranged opposite to each other, the first side wall is close to the inner ring air channel, and the second side wall is far away from the inner ring air channel; the second side walls of each of the sub-air channels are located on the same cylindrical surface, and along the flow direction of the mixed gas, the first side wall gradually approaches the second side wall so that the flow area of ​​the sub-air channel gradually decreases.

[0017] Such an arrangement facilitates the manufacture of the outer ring airway.

[0018] In one embodiment, a plurality of the air transfer elements are evenly distributed around the circumference of the inner ring air channel.

[0019] Such an arrangement is conducive to the fire coming out of the gas distribution plate.

[0020] In one embodiment, the center line of the gas transmission channel is in an arc shape.

[0021] Such arrangement facilitates manufacturing.

[0022] In one embodiment, the wall of the air transfer channel includes a bottom wall, a top wall, a third side wall and a fourth side wall, and a guide rib is protruding from the bottom wall, and the guide rib is spaced apart from the top wall, the third side wall and the fourth side wall.

[0023] With this arrangement, according to the Coanda effect, the fluid (water flow or air flow) tends to deviate from the original flow direction and flow along the protruding surface of the object. Because the bottom wall is provided with guide ribs, the gas will flow along the guide ribs during the flow in the gas transfer channel, thus preventing the gas from floating in the middle and upper area of ​​the gas transfer channel, thereby preventing backflow in the gas transfer channel, and facilitating faster mixing of the gas and flowing into the outer ring gas channel.

[0024] In one embodiment, the interval between the boundary line between the bottom wall and the third side wall and the guide rib is D1, and the interval between the boundary line between the bottom wall and the fourth side wall and the guide rib is D2, and both D1 and D2 are fixed values.

[0025] Such an arrangement is conducive to the stable flow of gas in the gas transmission channel.

[0026] In one embodiment, D1 = D2.

[0027] Such an arrangement is conducive to the stable flow of gas in the gas transmission channel.

[0028] The utility model also provides a gas stove, which comprises the gas distribution plate mentioned above.

[0029] Because the gas stove includes the above-mentioned gas distribution plate, the gas stove has the technical effect of the above-mentioned gas distribution plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A top view of a gas stove according to an embodiment of the utility model;

[0031] Figure 2 for Figure 1 A schematic structural diagram of the upper sub-body of the gas distribution plate in the illustrated embodiment;

[0032] Figure 3 for Figure 1 A top view of the lower sub-body of the gas distribution plate in the illustrated embodiment;

[0033] Figure 4 for Figure 1 A bottom view of the lower sub-body of the gas distribution plate in the illustrated embodiment;

[0034] Figure 5 FIG. 1 is a top view of the lower sub-body of the gas distribution plate according to another embodiment.

[0035] Reference numerals:

[0036] 10. Gas distribution plate;

[0037] 1. Inner ring airway; 11. First air outlet;

[0038] 2. Base; 21. First air inlet; 22. Second air inlet; 23. Second air outlet;

[0039] 3. Outer ring air channel; 31. Sub-air channel; 311. Large diameter end; 312. Small diameter end; 313. First side wall; 314. Second side wall;

[0040] 4. air transmission member; 41. air transmission channel; 411. bottom wall; 412. top wall; 413. third side wall; 414. fourth side wall;

[0041] 5. Guide ribs;

[0042] 20. Furnace head; 201. First ejector tube; 202. Second ejector tube. DETAILED DESCRIPTION

[0043] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it 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 the present invention can be understood according to specific circumstances.

[0047] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0048] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0049] See also Figures 1 to 4 The utility model first provides a gas distribution plate 10, which includes an inner ring air channel 1, a base 2, an outer ring air channel 3 and an air transmission component 4. The base 2 is connected to the inner ring air channel 1, and a first air inlet 21 for inputting mixed gas is provided on the base 2, and the first air inlet 21 is connected to the inner ring air channel 1. The outer ring air channel 3 is sleeved on the inner ring air channel 1, and the outer ring air channel 3 includes a plurality of sub-air channels 31, and the plurality of sub-air channels 31 are connected end to end in sequence. Each outer ring air channel 3 includes a large diameter end 311 and a small diameter end 312, and the flow area of ​​the sub-air channel 31 gradually decreases from the large diameter end 311 to the small diameter end 312, and the small diameter end 312 of the upper sub-air channel 31 is connected to the large diameter end 311 of the next sub-air channel 31. There are a plurality of air transmission components 4, and each air transmission component 4 has an air transmission channel 41 connected to the first air inlet 21, and the air transmission channel 41 has an air outlet, and the air outlet is connected to the outer ring air channel 3. Each gas transmission element 4 corresponds to a sub-gas channel 31 , and each gas outlet is disposed toward the large-diameter end 311 of the corresponding sub-gas channel 31 , so that the mixed gas flows from the large-diameter end 311 toward the small-diameter end 312 .

[0050] It should be noted that the above-mentioned mixed gas includes fuel gas and air.

[0051] For each sub-gas channel 31, the mixed gas flowing into it has two sources, one source is the mixed gas flowing out from the corresponding gas transmission element 4, and the other source is the mixed gas flowing out from the small diameter end 312 of the previous gas transmission element 4. The mixed gas from these two sources flows in from the large diameter end 311 of the sub-gas channel 31 and flows out from the small diameter end 312 of the same sub-gas channel 31. From the large diameter end 311 to the small diameter end 312, the flow area of ​​the sub-gas channel 31 gradually decreases, which is conducive to the mixed gas filling each sub-gas channel 31, thereby reducing the possibility of flow dead zones in the outer ring gas channel 3, facilitating the uniform fire of the fire distribution plate, and improving the cooking effect of the gas stove.

[0052] Combination Figures 1 to 3 Each sub-airway 31 has a first side wall 313 and a second side wall 314 that are arranged opposite to each other, the first side wall 313 is close to the inner ring airway 1, and the second side wall 314 is far away from the inner ring airway 1. The first side walls 313 of each sub-airway 31 are located on the same cylindrical surface, and along the flow direction of the mixed gas, the second side wall 314 gradually approaches the first side wall 313, so that the flow area of ​​the sub-airway 31 is gradually reduced. In this way, it is convenient to manufacture the outer ring airway 3.

[0053] Preferably, the second side wall 314 extends along an involute, which is beneficial to improving the flow uniformity of the mixed gas and reducing the friction resistance and pressure loss of the mixed gas during its flow in the sub-gas channel 31 .

[0054] In other embodiments, the second sidewalls 314 of each sub-gas channel 31 are located on the same cylindrical surface, and along the flow direction of the mixed gas, the first sidewall 313 gradually approaches the second sidewall 314, so that the flow area of ​​the sub-gas channel 31 gradually decreases. This also facilitates the manufacture of the outer ring gas channel 3.

[0055] Preferably, see Figure 1 and Figure 2 A plurality of gas transmission components 4 are evenly distributed around the circumference of the inner ring gas channel 1, which is conducive to uniform fire output from the gas distribution plate 10.

[0056] In some embodiments, each gas transmission channel 41 is a straight channel, but the center line of each gas transmission channel 41 does not pass through the center of the inner ring gas channel 1. In addition, the gas distribution plate 10 is a rotationally symmetrical structure, wherein the angle between two adjacent gas transmission channels 41 is a first angle, and the gas distribution plate 10 overlaps itself after rotating around the axis of the inner ring gas channel 1 through the first angle.

[0057] See also Figure 1 and Figure 2In some embodiments, the center line of each gas transmission channel 41 is curved, and the gas outlet of each gas transmission channel 41 is in the counterclockwise direction. Of course, in other embodiments, the gas outlet of each gas transmission channel 41 can also be in the clockwise direction. In this way, the gas flowing out of each gas transmission channel 41 enters the outer ring gas channel 3 and rotates in the same direction. The gas flowing out of each gas transmission channel 41 flows from the large diameter end 311 to the small diameter end 312 after entering the corresponding sub-gas channel 31. For example, in Figure 1 In the illustrated embodiment, the gas flowing out of each gas transmission channel 41 rotates counterclockwise after entering the outer ring gas channel 3 .

[0058] Preferably, see Figures 1 to 3 For ease of manufacturing, the center line of the air transmission channel 41 is in an arc shape. Exemplarily, the air transmission channel 41 may be an arc-shaped channel, or may be a shape that gradually narrows or widens from the inner ring air channel 1 to the outer ring air channel 3.

[0059] Optionally, the plurality of air transmitting elements 4 may not be evenly distributed around the circumference of the inner ring air channel 1. For example, the interval between two air transmitting elements 4 may be slightly smaller, and the interval between the other two air transmitting elements 4 may be slightly larger.

[0060] The number of the air transfer elements 4 can be 3 or more, preferably 3 or 4.

[0061] Optionally, the center line of the gas transmission channel 41 may also be a part of a quadratic curve or a part of a parabola.

[0062] In the prior art, when the gas flows in the gas transmission channel 41, it will float in the middle and upper area of ​​the gas transmission channel 41, which makes it easy for the lower area of ​​the gas transmission channel 41 to flow back. Figure 3 and Figure 5 The walls of the gas transmission channel 41 include a bottom wall 411, a top wall 412, a third side wall 413 and a fourth side wall 414. Figure 5 In some embodiments, the bottom wall 411 is provided with a guide rib 5 protruding therefrom, and the guide rib 5 is spaced apart from the top wall 412, the third side wall 413, and the fourth side wall 414. According to the Coanda effect, the fluid (water flow or air flow) tends to deviate from the original flow direction and flow along the protruding surface of the object. Because the guide rib 5 is protruding therefrom on the bottom wall 411, the gas will flow along the guide rib 5 during the flow in the gas transfer channel 41, which can prevent the gas from floating in the middle and upper area of ​​the gas transfer channel 41, thereby preventing backflow in the gas transfer channel 41, which is conducive to faster mixing of the gas and flowing into the outer ring gas channel 3.

[0063] Preferably, the interval between the boundary line between the bottom wall 411 and the third side wall 413 and the guide rib 5 is D1, and the interval between the boundary line between the bottom wall 411 and the fourth side wall 414 and the guide rib 5 is D2. In order to make the gas flow stably in the gas transmission channel 41 and prevent turbulence, D1 and D2 are fixed values. In other words, the boundary line between the bottom wall 411 and the first side wall 313 and the guide rib 5 are arranged at equal intervals, and the boundary line between the bottom wall 411 and the second side wall 314 and the guide rib 5 are also arranged at equal intervals.

[0064] More preferably, D1=D2, in other words, the guide rib 5 is located in the middle of the bottom wall 411. This is conducive to the stable flow of gas in the gas transmission channel 41.

[0065] Preferably, for ease of manufacturing, the cross section of the guide rib 5 is semicircular.

[0066] Combination Figures 1 to 4 In the use state, the inner ring air channel 1 is covered with an inner ring fire cover, and the outer ring fire cover is covered with an outer ring fire cover. The holes on the inner ring fire cover and the outer ring fire cover are fire outlet holes. The base 2 is also provided with a second air inlet 22, and the inner ring air channel 1 is provided with a first air outlet 11 connected to the second air inlet 22. The burner head 20 includes a first ejector tube 201 and a second ejector tube 202, the first air inlet 21 is connected to the first ejector tube 201, and the second air inlet 22 is connected to the second ejector tube 202. The base 2 is also provided with a plurality of second air outlets 23, and the second air outlets 23 correspond to the air transfer channels 41 one by one, and each air transfer channel 41 is connected to the first air inlet 21 through the corresponding second air outlet 23.

[0067] In some embodiments, for ease of manufacturing, the gas distribution plate 10 is composed of an upper split body (such as Figure 2 as shown) and the lower body (as Figure 3 and Figure 4 The upper part and the lower part can be fixed together by, but not limited to, riveting, clamping, screwing, etc.

[0068] See also Figure 1 The utility model further provides a gas stove, which includes the above-mentioned gas distribution plate 10. Because the gas stove includes the above-mentioned gas distribution plate 10, the gas stove has the technical effects of the above-mentioned gas distribution plate 10. Since the relevant technical effects have been fully described in the foregoing text, they will not be repeated here.

[0069] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A gas distribution plate, It is characterized in that include: Inner annular airway (1); A base (2) connected to the inner ring air channel (1), wherein the base (2) is provided with a first air inlet (21) for inputting a mixed gas; An outer ring air channel (3) is sleeved on the inner ring air channel (1), the outer ring air channel (3) comprises a plurality of sub-air channels (31), and the plurality of sub-air channels (31) are sequentially connected end to end; each outer ring air channel (3) comprises a large diameter end (311) and a small diameter end (312), and the flow area of ​​the sub-air channel (31) gradually decreases from the large diameter end (311) to the small diameter end (312), and the small diameter end (312) of the previous sub-air channel (31) is connected to the large diameter end (311) of the next sub-air channel (31); and A plurality of gas transfer components (4), each of the gas transfer components (4) having a gas transfer channel (41) connected to the first gas inlet (21), the gas transfer channel (41) having a gas outlet, the gas outlet being connected to the outer ring gas channel (3), each of the gas transfer components (4) corresponding to one of the sub-gas channels (31), and each of the gas outlets being arranged toward the large diameter end (311) of the corresponding sub-gas channel (31), so that the mixed gas flows from the large diameter end (311) toward the small diameter end (312).

2. The gas distribution plate according to claim 1, It is characterized in that Each of the sub-air channels (31) has a first side wall (313) and a second side wall (314) that are arranged opposite to each other, wherein the first side wall (313) is close to the inner ring air channel (1), and the second side wall (314) is far away from the inner ring air channel (1); the first side walls (313) of each of the sub-air channels (31) are located on the same cylindrical surface, and along the flow direction of the mixed gas, the second side wall (314) gradually approaches the first side wall (313), so that the flow area of ​​the sub-air channel (31) is gradually reduced.

3. The gas distribution plate according to claim 2, It is characterized in that The second side wall (314) extends along an involute line.

4. The gas distribution plate according to claim 1, It is characterized in that Each of the sub-air channels (31) has a first side wall (313) and a second side wall (314) that are arranged opposite to each other, wherein the first side wall (313) is close to the inner ring air channel (1), and the second side wall (314) is far away from the inner ring air channel (1); the second side walls (314) of each of the sub-air channels (31) are located on the same cylindrical surface, and along the flow direction of the mixed gas, the first side wall (313) gradually approaches the second side wall (314), so that the flow area of ​​the sub-air channel (31) is gradually reduced.

5. The gas distribution plate according to claim 1, It is characterized in that The plurality of air transmission components (4) are evenly distributed around the circumference of the inner ring air channel (1).

6. The gas distribution plate according to claim 1, It is characterized in that The center line of the air transfer channel (41) is in an arc shape.

7. The gas distribution plate according to claim 6, It is characterized in that The walls of the air transfer channel (41) include a bottom wall (411), a top wall (412), a third side wall (413) and a fourth side wall (414); a flow guiding rib (5) is protrudingly provided on the bottom wall (411); the flow guiding rib (5) is spaced apart from the top wall (412), the third side wall (413) and the fourth side wall (414).

8. The gas distribution plate according to claim 7, It is characterized in that The distance between the boundary line between the bottom wall (411) and the third side wall (413) and the guide rib (5) is D 1 The distance between the boundary line between the bottom wall (411) and the fourth side wall (414) and the guide rib (5) is D 2 , D 1 and D 2 All are fixed values.

9. The gas distribution plate according to claim 8, It is characterized in that D 1 =D 2 。 10. A gas stove, It is characterized in that The invention comprises the gas distribution plate according to any one of claims 1 to 9.

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