Base assembly and hob

Abstract

This invention provides a base assembly and a cooktop. The base assembly includes a base body, at least three nozzle mounting seats, and an outer annular air duct and a central air duct respectively disposed at the bottom of the base body. The base body has a plate-like structure. Each nozzle mounting seat is connected to the top of the base body and extends vertically from the top of the base body away from the base body. Each nozzle mounting seat has a nozzle on its top. The central air duct extends parallel to the base body and communicates with one of the nozzle mounting seats. The outer annular air duct extends parallel to the base body and communicates with the remaining nozzle mounting seats. The outer annular air duct and the central air duct overlap in their projections onto the base body, and the distance between the outer annular air duct and the base body is smaller than the distance between the central air duct and the base body. The base assembly of this invention improves the ability of the outer annular nozzle to entrain primary air, reduces the CO content in the flue gas, increases the load on the upper-intake burner, and improves combustion efficiency.

Description

Technical Field

[0001] This invention relates to the field of kitchen appliance technology, and in particular to a base assembly and a cooktop. Background Technology

[0002] Stoves are categorized into three types based on their burner air supply method: fully top-intake, fully bottom-intake, and all-intake. In a fully top-intake stove, the burner receives all its air from above the control panel, allowing for a completely sealed bottom. Compared to traditional bottom-intake stoves, this type offers more concentrated heat, higher heat load, more complete combustion, higher thermal efficiency, and the ability to utilize the inner ring of the burner independently.

[0003] However, due to structural limitations, the injector tube of the top-intake burner is relatively short, resulting in a relatively small heat load. In contrast, Chinese cooking in China requires a high-heat stir-fry, which restricts the development of gas stoves with top-intake burners in the country. Simply increasing the length of the injector tube to increase the heat load of the top-intake burner would increase the thickness of the burner and cause uneven air premixing, among other negative effects. Summary of the Invention

[0004] The purpose of this invention is to solve at least one of the above-mentioned problems and / or other problems existing in the prior art.

[0005] To achieve the objectives of this invention, the following technical solution is adopted:

[0006] According to one aspect of the present invention, a base assembly is provided, the base assembly comprising a base body, at least three nozzle mounting seats, and an outer annular air passage and a central air passage respectively disposed at the bottom of the base body, the base body having a plate-like structure; each nozzle mounting seat is connected to the top of the base body and extends vertically from the top of the base body to a side away from the base body, and a nozzle is disposed on the top of each nozzle mounting seat; the central air passage extends parallel to the base body and communicates with one of the nozzle mounting seats, the outer annular air passage extends parallel to the base body and communicates with the remaining nozzle mounting seats; wherein the outer annular air passage and the central air passage have overlapping portions in their projections on the base body, and the distance between the outer annular air passage and the base body is smaller than the distance between the central air passage and the base body.

[0007] According to one embodiment of the present invention, the base body is rectangular in shape, and the at least three nozzle mounting seats include a first outer ring nozzle seat and a second outer ring nozzle seat respectively connected to the top of the base body, wherein the first outer ring nozzle seat and the second outer ring nozzle seat are respectively disposed at two ends of the diagonal of the base body.

[0008] According to one embodiment of the present invention, the axes of the nozzles respectively installed on the first outer ring nozzle seat and the second outer ring nozzle seat are parallel and the air outlets of the two nozzles are oriented opposite to each other.

[0009] According to one embodiment of the present invention, the at least three nozzle mounting seats further include a central nozzle seat mounted on the top of the base body, wherein the nozzle mounted on the central nozzle seat is axially parallel to the nozzle mounted on the second outer ring nozzle seat and the air outlets of the two nozzles are arranged in the same direction.

[0010] According to one embodiment of the present invention, a positioning post is provided on the top of the first outer ring nozzle seat and the second outer ring nozzle seat.

[0011] According to one embodiment of the present invention, the outer annular air passage includes a first air passage and a second air passage extending along the gas flow direction, the end of the first air passage away from the second air passage extending toward the base body to form a third air passage communicating with the first outer annular nozzle seat, and the end of the second air passage away from the first air passage extending toward the base body to form a fourth air passage communicating with the second outer annular nozzle seat.

[0012] According to one embodiment of the present invention, the first airway and the second airway are each a straight segment, and the first airway and the second airway are arranged at an obtuse angle.

[0013] According to one embodiment of the present invention, the central airway is a straight segment and its air inlet end is located on the same side of the periphery of the base body as the air inlet end of the first airway, and the second airway and the central airway have overlapping portions in their projections on the base body.

[0014] According to one embodiment of the present invention, a support ring is provided with an outward protrusion at the top center of the base body.

[0015] According to one embodiment of the present invention, a plurality of fixing legs are provided at intervals along the periphery of the base body, and each fixing leg is provided with a plurality of supporting protrusions protruding away from the base body.

[0016] According to another aspect of the present invention, a cooktop is provided. The cooktop includes the aforementioned base assembly and burner assembly. The bottom of the burner assembly has a positioning ring and a blind hole protruding outward, the positioning ring matching a support ring of the base body, and the blind hole matching a positioning post of the nozzle mounting seat.

[0017] One embodiment of the present invention has the following advantages or beneficial effects:

[0018] The base assembly of the present invention uses at least two nozzle mounting seats for air intake in the outer ring gas duct, which helps to improve the ability of the outer ring nozzle to inject primary air, reduce the CO content in the flue gas, increase the load of the upper air intake burner, and improve combustion efficiency. The first gas duct and the second gas duct are arranged at an obtuse angle, which can reduce the resistance loss when the gas passes through the turning flow channel, increase the gas pressure, and reduce the attenuation of heat load. Each of the fixed legs has multiple support protrusions that protrude away from the base body. By reducing the area of ​​the mounting surface of the fixed leg, its contact with the bottom shell is reduced, thereby reducing the conduction of high-temperature heat through the legs into the bottom shell, which helps to reduce heat loss. Attached Figure Description

[0019] The above and other features and advantages of the present invention will become more apparent from a detailed description of exemplary embodiments thereof with reference to the accompanying drawings.

[0020] Figure 1 A perspective view of a stove according to an exemplary embodiment of the present invention is shown.

[0021] Figure 2 Show Figure 1 An exploded view of the stove shown.

[0022] Figure 3 A perspective view of a base assembly according to an exemplary embodiment of the present invention is shown.

[0023] Figure 4 Show Figure 3 The bottom view of the base assembly shown.

[0024] Figure 5 Show Figure 4 The base assembly and the fire distributor assembly shown are sectional views along line BB.

[0025] Figure 6 Show Figure 4 A cross-sectional view along line CC of the base assembly and the fire distributor assembly shown.

[0026] Figure 7 An exploded view of a fire distributor assembly according to an exemplary embodiment of the present invention is shown.

[0027] Figure 8 Show Figure 7 A top view of the main body of the fire distributor assembly shown.

[0028] Figure 9 Show Figure 7 The illustrated fire spreader assembly is along Figure 8 A cross-sectional view along line AA in the middle.

[0029] Figure 10 An exploded view of an exemplary embodiment of the present invention is shown.

[0030] Figure 11 Show Figure 10 The diagram shows a cross-sectional view of the energy-concentrating pot support along the first pot support.

[0031] Figure 12 Show Figure 10 A partial cross-sectional view of the first layer of the energy-concentrating boiler rack shown.

[0032] The reference numerals in the attached figures are explained as follows:

[0033] 1. Cooktop panel; 11. Combustion port; 12. Liquid tray; 2. Cooktop outer shell; 21. Cooktop inner cavity; 3. Base assembly; 31. Base body; 311. Support ring; 312. Fixing leg; 3121. Mounting hole; 3122. Support protrusion; 32. Nozzle mounting seat; 321. Nozzle; 322. First outer ring nozzle seat; 323. Second outer ring nozzle seat; 324. Center nozzle seat; 325. Positioning post; 33. Outer ring gas passage; 331. First gas... 332. Second air passage; 333. Third air passage; 334. Fourth air passage; 34. Central air passage; 4. Flamethrower assembly; 41. Blind hole; 42. Positioning ring; 43. Flamethrower body; 431. Outer ring mixing chamber; 4311. Mixing chamber body; 4312. Mixing section; 43121. First mixing section; 43122. Second mixing section; 43123. Extension surface; 4313. Outer ring support column; 432. Outer ring ejector tube; 4321. First 4322, Second ejector tube; 4323, Inclined surface; 433, Central mixing chamber; 4331, Central support column; 434, Central ejector tube; 435, Air passage; 44, Outer ring air guide plate; 441, Outer ring air guide hole; 442, Outer ring lug; 45, Central air guide plate; 451, Central air guide hole; 452, Central lug; 5, Burner cap assembly; 51, Inner burner cap; 52, Outer burner cap; 6, Energy-concentrating pot frame; 61, First layer plate; 611. Section; 6111, First Section; 6112, Second Section; 6113, Third Section; 6114, Fourth Section; 612, First Positioning Hole; 62, Second Layer Plate; 621, First Flanged Edge; 622, Second Flanged Edge; 63, Third Layer Plate; 631, Third Flanged Edge; 632, Second Positioning Hole; 64, First Cavity; 65, Second Cavity; 66, First Pot Support; 661, First Positioning Part; 67, Second Pot Support; 671, Second Positioning Part. Detailed Implementation

[0034] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that the invention will be thorough and complete, and the concept of the exemplary embodiments will be fully conveyed to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0035] The terms “a,” “one,” “the,” and “the” are used to indicate the existence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended meaning of inclusion and that other elements / components / etc. may exist in addition to the listed elements / components / etc.

[0036] Figure 1 and Figure 2 A stove according to an embodiment of the present invention is shown. For example... Figure 1 and Figure 2 As shown, the stove may include a stove panel 1, a stove housing 2, a base assembly 3, a burner assembly 4, a burner cap assembly 5, and a pot holder 6. The stove panel 1 is provided with combustion holes 11, and an annular liquid collection tray 12 is provided at the position corresponding to the combustion holes 11. The stove housing 2 surrounds a stove cavity 21 with a top opening that can accommodate the base assembly 3 and at least a portion of the burner assembly 4. The stove panel 1 is provided with at least one combustion hole 11 for at least a portion of the burner assembly 4 to extend out of the stove cavity 21, such that after the stove panel 1 is placed over the top opening of the stove housing 2, at least a portion of the burner assembly 4 can extend out of the combustion hole 11. The energy-concentrating pot rack 6 is located above the cooktop panel 1 and corresponds to the outer periphery of the portion of the burner assembly 4 that extends beyond the combustion hole 11. It increases its own temperature by absorbing the heat lost by high-temperature flue gas to the outside. Then, through radiative heat exchange between fixed surfaces, it transfers the heat to the bottom of the pot, thus converting some of the heat lost by the flue gas to the outside into effective heat absorption by the pot body.

[0037] According to an exemplary embodiment of the base assembly 3, such as Figures 3 to 6 As shown, the base assembly 3 may include a base body 31, at least three nozzle mounting seats 32, and an outer annular air passage 33 and a central air passage 34 respectively disposed at the bottom of the base body 31. The base body 31 has a plate-like structure. In this embodiment, the base body 31 is positioned substantially flush with the cooktop panel 1, so that when each nozzle mounting seat 32 is respectively connected to the top of the base body 31, air can be drawn vertically from the top of the base body 31 to the side away from the base body 31. Figure 3The central air duct 34 extends upwards from the horizontal plane perpendicular to the base body 31, allowing the nozzle 321, mounted on top of the nozzle mount 32, to protrude beyond the combustion hole 11, achieving upward air intake. Figure 6 Extending within the horizontal plane shown, and with the air intake end of the central air passage 34 facing one side of the base body 31 (…). Figure 6 (On the left side of the base body 31 shown), the outlet end of the central air passage 34 is connected to one of the nozzle mounting seats 32 for supplying air to the central flame. The outer ring air passage 33 is parallel to the plane of the base body 31. Figure 5 Extending within the horizontal plane shown, and with the air intake end of the outer annular air passage 33 facing one side of the base body 31 (… Figure 5 On the right side of the base body 31 shown, the outer annular air passage 33 and all nozzle mounting seats 32 except for the nozzle mounting seat 32 connected to the central air passage 34 are simultaneously connected to supply air to the outer annular flame. Viewed from below along the axial direction of the base body 31, the projections of the outer annular air passage 33 and the central air passage 34 on the base body 31 overlap, meaning that the outer annular air passage 33 and the central air passage 34 intersect. To avoid connecting the outer annular air passage 33 and the central air passage 34, the outer annular air passage 33 can be positioned closer to the base body 31, while the central air passage 34 can be positioned farther from the base body 31. This makes the distance between the outer annular air passage 33 and the base body 31 smaller than the distance between the central air passage 34 and the base body 31. Thus, at least three nozzle mounting seats 32 can be placed at any position on the base body 31, and the air inlets of the outer annular air passage 33 and the central air passage 34 are symmetrically arranged on the same side of the base body 31.

[0038] According to an exemplary embodiment of the nozzle mounting base 32, such as Figure 3As shown, the base body 31 is rectangular in shape, and the corners of the base body 31 corresponding to the rectangle are rounded for safety. At least three nozzle mounting seats 32 include a first outer ring nozzle seat 322 and a second outer ring nozzle seat 323. The first outer ring nozzle seat 322 and the second outer ring nozzle seat 323 are respectively connected to the top of the base body 31, and are respectively located at the two ends of the diagonal of the base body 31. Therefore, when the nozzles 321 are respectively mounted on the first outer ring nozzle seat 322 and the second outer ring nozzle seat 323, the axes of the two nozzles 321 can be coaxial or parallel. For example, when the air outlets of the two nozzles 321 are arranged opposite each other along the diagonal, the axes of the two nozzles 321 are coaxial. When the axes of the two nozzles 321 are both arranged along the length of the base body 31, the axes of the two nozzles 321 are parallel. In this embodiment, the axes of the two nozzles 321 are parallel, and the orientation of the air outlets of the two nozzles 321 is preferably opposite. By simultaneously setting the first outer ring nozzle seat 322 and the second outer ring nozzle seat 323, two nozzles 321 can be set on the first outer ring nozzle seat 322 and the second outer ring nozzle seat 323 to enter the burner assembly 4 at the same time. This is beneficial to improve the ability of the two nozzles 321 to entice primary air, reduce the CO content in the flue gas, and improve combustion efficiency.

[0039] Furthermore, at least three nozzle mounting seats 32 also include a central nozzle seat 324, which is also mounted on the top of the base body 31. The axis of the nozzle 321 mounted on the central nozzle seat 324 is parallel to the axis of the nozzle 321 mounted on the second outer ring nozzle seat 323, and the air outlet of the nozzle 321 on the central nozzle seat 324 is oriented in the same direction as the air outlet of the nozzle 321 on the second outer ring nozzle seat 323, so that the air outlet of the nozzle 321 on the central nozzle seat 324 is oriented in the opposite direction to the air outlet of the nozzle 321 on the first outer ring nozzle seat 322.

[0040] To pre-position or limit the base body 31 and the flame distributor assembly 4 in the circumferential direction and prevent the flame distributor body 43 from shifting circumferentially from the base body 31, positioning posts 325 are provided at the bottom of the first outer ring nozzle seat 322 and the second outer ring nozzle seat 323. Correspondingly, the flame distributor assembly 4 is provided with a blind hole 41 that matches the positioning post 325. It can be understood that the positioning post 325 can also be provided on the central nozzle seat 324, and the blind hole 41 matching the positioning post 325 is provided on the flame distributor assembly 4 at a position corresponding to the central nozzle seat 324.

[0041] According to an exemplary embodiment of the outer annular airway 33, such as Figure 5As shown, the outer annular air passage 33 includes a first air passage 331 and a second air passage 332 extending along the gas flow direction. The second air passage 332 is connected to the air outlet of the first air passage 331. The end of the first air passage 331 that is away from the second air passage 332 ( Figure 5 The end of the first air passage 331 shown above the air inlet is upward ( Figure 5 A third air passage 333 extends from the side where the base body 31 is located, and the outlet end of the third air passage 333 is connected to the first outer ring nozzle seat 322. The end of the second air passage 332 away from the first air passage 331 ( Figure 5 The end of the second air passage 332 shown above the air outlet is upward ( Figure 5 A fourth air passage 334 extends from one side of the base body 31 shown, and the outlet of the fourth air passage 334 is connected to the second outer ring nozzle seat 323. In this way, the first outer ring nozzle seat 322 and the second outer ring nozzle seat 323, which are located diagonally, are connected by the outer ring air passage 33. Part of the gas entering the outer ring air passage 33 from the air inlet enters the first outer ring nozzle seat 322 through the first air passage 331 and the third air passage 333, and the other part enters the second outer ring nozzle seat 323 through the first air passage 331, the second air passage 332 and the fourth air passage 334.

[0042] Furthermore, the first air passage 331 and the second air passage 332 are respectively straight segments, and the first air passage 331 and the second air passage 332 are arranged at an obtuse angle, which can reduce the resistance loss when the gas passes through the turning flow channel at the connection of the first air passage 331 and the second air passage 332, increase the gas pressure, and reduce the attenuation of heat load.

[0043] In the above embodiment, the central airway 34 is a straight segment and its air inlet end is located on the same side of the periphery of the base body 31 as the air inlet end of the first airway 331. Figure 4 (As shown on the left side of the base body 31), it is convenient to connect the air inlet end of the central air passage 34 and the air inlet end of the outer ring air passage 33 to the stopcock valve simultaneously. In this way, after the first air passage 331 extends along the length direction of the base body 31, it overlaps with the projection of the central air passage 34 on the base body 31 through the second air passage 332. Thus, the second air passage 332 extends from the corresponding position of the first nozzle mounting seat 32 located on the left side of the central air passage 34 to the corresponding position of the second nozzle mounting seat 32 located on the left side of the central nozzle seat 324.

[0044] Continue to refer to Figure 5 In conjunction with the positioning post 325 and blind hole 41 in the above embodiment, the base body 31 is positioned outward from the top center. Figure 6A support ring 311 is provided on the top of the base body 31 shown. A positioning ring 42 matching the support ring 311 is provided on the fire distributor assembly 4. The fire distributor assembly 4 is positioned above the base body 31 by fitting the positioning ring 42 onto the outer periphery of the support ring 311 (or the support ring 311 onto the outer periphery of the positioning ring 42). The outlets of the three nozzles 321 correspond to the first outer ring ejector tube 432, the second outer ring ejector tube 432, and the inner ring ejector tube, respectively.

[0045] To stably fix the base body 31 to the cooktop housing 2, multiple fixing legs 312 are spaced apart along the periphery of the base body 31. The fixing legs 312 are configured such that bolts pass through the mounting holes 3121 on the fixing legs 312, allowing the base body 31 to be fixed to the cooktop housing 2 or connected to a bracket on the cooktop housing 2. Each fixing leg 312 has multiple supporting protrusions 3122 protruding from the side away from the base body 31. The height of these supporting protrusions 3122 is 1mm to 2mm. By reducing the contact area between the fixing legs 312 and the cooktop housing 2, the conduction of high-temperature heat through the fixing legs 312 to the cooktop housing 2 can be reduced, thus minimizing heat loss.

[0046] According to an exemplary embodiment of the fire distributor assembly 4, as follows: Figures 7 to 9As shown, the ignition distributor assembly 4 includes an ignition distributor body 43, an outer ring gas guide plate 44, and a central gas guide plate 45. The ignition distributor body 43 includes an outer ring mixing chamber 431, at least two outer ring ejector tubes 432 corresponding to the outer ring mixing chamber 431, a central mixing chamber 433, and a central ejector tube 434 corresponding to the central mixing chamber 433. The outer ring mixing chamber 431 includes an annular mixing chamber body 4311 and at least two mixing sections 4312 spaced apart along the mixing chamber body 4311. The top of each mixing section 4312 is connected to the mixing chamber body 4311, and the sidewall of each mixing section 4312 is connected to the outlet end of an outer ring ejector tube 432. Each outer ring ejector tube 432 extends from the corresponding mixing section 4312 into the inner side of the mixing chamber body 4311. The air inlet of one outer ring ejector tube 432 corresponds to the air outlet of the nozzle 321 installed on the first outer ring nozzle seat 322, and the air inlet of the other outer ring ejector tube 432 corresponds to the air outlet of the nozzle 321 installed on the second outer ring nozzle seat 323. A gap is provided between the nozzle 321 and the outer ring ejector tube 432 to allow air to flow in, so that when the fuel gas is ejected into the outer ring ejector tube 432 by the nozzle 321, air can be drawn in together with it through negative pressure and mixed in the outer ring ejector tube 432. By simultaneously introducing fuel gas and air through the two outer ring ejector tubes 432, the air ejection capacity of the outer ring mixing chamber 431 can be improved, thereby solving the problem of increased outer ring fire load and excessive CO content in the flue gas. The central mixing chamber 433 is coaxially disposed at the center of the outer ring mixing chamber 431. It can be understood that when the outer ring ejector tube 432 extends inward toward the inner side of the mixing chamber body 4311, it can be as follows: Figure 9 The outer ring ejector 432 and the central mixing chamber 433 have overlapping areas in their horizontal projections, but they are not connected. The outlet end of the central ejector 434 is connected to the central mixing chamber 433, and the inlet end of the central ejector 434 corresponds to the outlet of the nozzle 321 mounted on the central nozzle seat 324. The nozzle 321 can also draw air into the central ejector 434 through the gap between the central ejector 434 and the nozzle 321 by negative pressure, allowing it to mix with the fuel gas.

[0047] In the above embodiments, such as Figure 9As shown, at least two mixing sections 4312 include a first mixing section 43121 and a second mixing section 43122. Correspondingly, at least two outer ring ejector tubes 432 include a first ejector tube 4321 and a second ejector tube 4322. The first ejector tube 4321 communicates with the side wall of the first mixing section 43121, and the second ejector tube 4322 communicates with the side wall of the second mixing section 43122, so that the gas mixed with air enters the first mixing section 43121 and the second mixing section 43122 respectively, and flows gradually upward along the circumference of the ignition distributor body 43 into the mixing chamber body 4311. Further, the first ejector tube 4321 and the second ejector tube 4322 are parallel to the central ejector tube 434, and the first ejector tube 4321 and the second ejector tube 4322 are symmetrically arranged on both sides of the central mixing chamber 433. Three ejector tubes are arranged in parallel at the bottom of the fire distributor body 43 to minimize the space occupied by the ejector tubes and maximize the ability to eject air within a limited space.

[0048] According to an exemplary embodiment of the mixing section 4312, as Figure 8 and Figure 9 As shown, each mixing section 4312 has an extension surface 43123 at its bottom, with an elevation angle between 25° and 30°. This extension surface 43123 extends obliquely upwards from the bottom of the outer ring ejector tube 432 to the bottom of the outer ring mixing chamber 431, the bottom of which is planar. The mixed gas entering the mixing section 4312 via the outer ring ejector tube 432 changes its flow direction along the extension surface 43123, further mixing within the mixing section 4312, and then flows along the extension surface 43123 to the planar portion of the outer ring mixing chamber 431. This reduces the impact of the mixed gas on the ignition distributor body 43, thus minimizing turbulence. Furthermore, the cross-section of the mixing section 4312 gradually decreases along the gas flow direction, increasing the flow velocity of the mixed gas and preventing backfire caused by pressure changes.

[0049] In an exemplary embodiment of the outer ring ejector tube 432, the air inlet end of the first ejector tube 4321 and the air inlet end of the second ejector tube 4322 are centrally symmetrically arranged with respect to the central mixing chamber 433. Thus, when the igniter body 43 is connected to the base body 31, the air inlet end of the first ejector tube 4321 can correspond to the nozzle 321 on the first outer ring nozzle seat 322, and the air inlet end of the second ejector tube 4322 can correspond to the nozzle 321 on the second outer ring nozzle seat 323.

[0050] In the above embodiments, reference continues to be made to Figure 8 and Figure 9Air passages 435 are respectively provided between the first ejector tube 4321 and the outer annular mixing chamber 431, and between the second ejector tube 4322 and the outer annular mixing chamber 431. The function of these air passages 435 is to allow air to flow along the air passages to the top outer periphery of the central mixing chamber 433, providing secondary air replenishment for the combustion of the central flame. Furthermore, the first ejector tube 4321 and the second ejector tube 4322 are respectively provided with inclined surfaces 4323 near the outer sidewall of the outer annular mixing chamber 431, with an elevation angle of 45° to 60°. This facilitates the upward flow of secondary air along the upward angle, reducing resistance and effectively increasing the supply of secondary air, resulting in more complete combustion.

[0051] According to an exemplary embodiment of the central ejector tube 434, such as Figure 8 As shown, the outlet end of the central ejector tube 434 passes through the central mixing chamber 433 and extends to the center of the central mixing chamber 433. By extending the length of the central ejector tube 434, the ejection capacity of the central ejector tube 434 is improved, the ejection coefficient of the primary air is increased, and the combustion of the mixed gas in the central mixing chamber 433 is more complete.

[0052] For the engagement between the distributor body 43 and the base body 31, the distributor body 43 has a positioning ring 42 protruding downwards at the bottom of the central mixing chamber 433, which engages with the support ring 311 protruding upwards at the top of the base body 31. Furthermore, a blind hole 41 for positioning is provided at the bottom of the outer ring mixing chamber 431, which matches the positioning posts 325 respectively provided on the first outer ring nozzle seat 322 and the second outer ring nozzle seat 323.

[0053] According to an exemplary embodiment of the outer ring air guide plate 44, such as Figure 7 As shown, the outer ring guide plate 44 is disposed within the outer ring mixing chamber 431 and has at least two outer ring lugs 442 with outer ring guide holes 441. The outer ring lugs 442 are disposed at the connection between the mixing section 4312 and the outer ring ejector tube 432. For example, an outer ring lug 442 is disposed at the connection between the first ejector tube 4321 and the first mixing section 43121, and an outer ring lug 442 is disposed at the connection between the second ejector tube 4322 and the second mixing section 43122. Through the multiple outer ring guide holes 441 on the outer ring lugs 442, a small portion of the mixed gas flows out through the outer ring guide holes 441, which helps to improve the uniformity of the outer ring flame.

[0054] Specifically, the outer ring air guide plate 44 extends outward along the inner wall of the outer ring mixing chamber 431 to cover at least a portion of the outer ring mixing chamber 431. Preferably, the width of the outer ring air guide plate 44 is approximately 5 mm, while the width of the outer ring lug 442 is twice the width of the outer ring air guide plate 44. A plurality of outer ring support columns 4313 for supporting the outer ring air guide plate 44 are provided at equal intervals at the bottom of the outer ring mixing chamber 431.

[0055] According to an exemplary embodiment of the central air guide plate 45, such as Figure 7 As shown, the central air guide plate 45 is disposed within the central mixing chamber 433 and has a central lug 452 with a central air guide hole 451. The central lug 452 is disposed at the outlet end of the central ejector tube 434. Through the multiple central air guide holes 451 on the central lug 452, a small portion of the mixed gas flows out through the central air guide holes 451, which helps to improve the uniformity of the central flame.

[0056] Specifically, the central air guide plate 45 extends inward along the outer wall of the central mixing chamber 433 to cover at least a portion of the central mixing chamber 433. Preferably, the width of the central air guide plate 45 is approximately 3 mm to 5 mm, while the width of the central lug 452 is twice the width of the central air guide plate 45. A plurality of central support columns 4331 for supporting the central air guide plate 45 are evenly spaced at the bottom of the central mixing chamber 433.

[0057] According to an exemplary embodiment of the flame cap assembly 5, such as Figure 2 As shown, the flame cap assembly 5 includes an inner flame cap 51 and an outer flame cap 52. The inner flame cap 51 has an inner flame hole on its outer circumferential side and covers the top of the central mixing chamber 433. The outer flame cap 52 has an outer flame hole on its outer circumferential side and covers the top of the outer ring mixing chamber 431. This embodiment is a conventional configuration and will not be described in detail here.

[0058] According to an exemplary embodiment of the energy-concentrating pot holder 6, such as Figure 10 and Figure 11As shown, the energy-concentrating boiler frame 6 includes a first layer plate 61, a second layer plate 62, and a third layer plate 63, all of which are annular. The first layer plate 61 extends substantially radially along the energy-concentrating boiler frame 6 and includes multiple annular segments 611, which are also arranged radially from the inside to the outside. Each segment 611 has a cross-section with a different shape than the other segments 611. For example, the cross-sections of the multiple segments 611 are respectively straight, arc-shaped, or circular, and are respectively set at different positions to change the velocity, turbulence, and direction of flue gas flow at that position. The inner end of the second layer plate 62 is connected to the inner end of the first layer plate 61, and the outer end of the second layer plate 62 is connected to the outer end of the first layer plate 61, thereby forming a first cavity 64 between the first layer plate 61 and the second layer plate 62 as an upper air insulation interlayer. The first cavity 64, with a height of approximately 2.5mm to 3mm, radiates high-temperature heat upwards to the upper surface of the energy-concentrating pot rack 6 (i.e., the upper surface of the first layer plate 61), raising the temperature of the surface of the energy-concentrating pot rack 6 near the cookware. This enhances the intensity of the high-temperature heat radiated from the energy-concentrating pot rack 6 to the bottom of the cookware, thereby improving thermal efficiency. The inner end of the third layer plate 63 is connected to the inner end of the second layer plate 62, and the outer end of the third layer plate 63 is connected to the outer end of the first layer plate 61, thus forming a second cavity 65 between the second layer plate 62 and the third layer plate 63, serving as a lower air insulation layer. The second cavity 65, with a height of approximately 30mm, isolates the cooling effect of the surrounding cold air on the inner surface of the energy-concentrating pot rack 6, thereby increasing the temperature of the inner surface of the energy-concentrating pot rack 6.

[0059] According to an exemplary embodiment of the plurality of sections 611, such as Figure 12 As shown, the plurality of segments 611 include a first segment 6111, a second segment 6112, a third segment 6113, and a fourth segment 6114 arranged sequentially from the inside out. The first segment 6111, the second segment 6112, the third segment 6113, and the fourth segment 6114 each have different cross-sections depending on their location, so as to perform corresponding functions in their respective positions. Corresponding to the positions of the first segment 6111 and the fourth segment 6114, the inner end of the second layer plate 62 is connected to the inner side of the first segment 6111, and the outer ends of the second layer plate 62 and the third layer plate 63 are respectively connected to the outer ends of the fourth segment 6114.

[0060] According to an exemplary embodiment of the first paragraph 6111, continued reference Figure 12The first segment 6111 has an arc-shaped cross-section, and this arc-shaped first segment 6111 protrudes towards the axis of the energy-concentrating pot support 6. The height of the first segment 6111 gradually increases as it extends radially outward. The radius of the arc of this first segment 6111 is approximately between 70mm and 90mm, avoiding the vortex phenomenon that occurs in the concave energy-concentrating plate of the prior art. This prevents some high-temperature flue gas from entering the vortex and reducing heat exchange with the bottom of the pot, and also increases the flow of secondary air, increases the flow velocity of the high-temperature flue gas, and increases the heat exchange between the high-temperature flue gas and the bottom of the pot.

[0061] According to an exemplary embodiment of the second paragraph 6112, continuing with reference to Figure 12 The cross-section of the second section 6112 is an inclined straight line, and its height gradually increases as it extends outward from the outer end of the first section 6111, thereby reflecting more heat to the bottom of the pot.

[0062] A thermal boundary layer forms when high-temperature flue gas exchanges heat with the bottom of the pot. This thermal boundary layer increases the heat exchange resistance between the flue gas and the bottom of the pot, reducing the amount of heat exchanged. To break down this thermal boundary layer, such as... Figure 12 As shown, at the exhaust port of the energy-concentrating pot frame 6 (where the third section 6113 is located), the cross-section of the third section 6113 is set to be wavy, and the third section 6113 is in a plane perpendicular to the axial direction of the energy-concentrating pot frame 6 (e.g., Figure 12 Extending within the horizontal plane shown. Viewed from the cross-section of the third section 6113, the wavy cross-section has 5 to 10 ripples, each with a height of 5 mm to 10 mm. When the combustion flue gas passes through the third section 6113, it will cause severe disturbance, thereby increasing the turbulence of the flue gas flow, disrupting the thermal boundary layer formed between the high-temperature flue gas and the bottom of the pot, and improving the thermal efficiency by about 5%.

[0063] Since the high-temperature flue gas, still at a certain temperature, exchanges heat with the third section 6113, some of it flows horizontally inward along the bottom of the pot, while another portion flows upward along the edge of the pot's side, further exchanging heat with the pot. The majority of the high-temperature flue gas then flows horizontally outward into the air, resulting in heat loss. To reduce this horizontal outward flow of high-temperature flue gas, such as... Figure 12 As shown, a fourth segment 6114 is provided on the outer periphery of the third segment 6113. The cross-section of the fourth segment 6114 is an inverted "U" shape, and its side closest to the third segment 6113 ( Figure 12The inner sidewall of the fourth section 6114 (as shown) extends at an angle, thereby changing the flow direction of the high-temperature flue gas and allowing more high-temperature flue gas to flow upward along the edge of the cookware side, improving heat exchange efficiency. The fourth section 6114 has a height of approximately 5 mm and a width of approximately 5 mm.

[0064] More specific details regarding the connection method between the first layer plate 61 and the second layer plate 62, such as Figure 11 As shown, the outer periphery of the second layer plate 62 is provided with a first flange 621, which is attached and fixed to the outer side wall of the fourth section 6114, preferably by spot welding.

[0065] Furthermore, regarding the more specific connection methods between the second layer plate 62 and the third layer plate 63 and the first layer plate 61, such as... Figure 11 As shown, the inner periphery of the second layer plate 62 and the third layer plate 63 respectively have a second flange 622 and a third flange 631 that fit together. The second flange 622 and the third flange 631 are respectively fixed to the first section 6111, preferably by spot welding.

[0066] In the above embodiments, such as Figure 10 and Figure 11 As shown, the energy-concentrating pot rack 6 also includes multiple first pot supports 66 and multiple second pot supports 67. The multiple first pot supports 66 are equally spaced in a ring around the first layer plate 61, and each faces the side of the first layer plate 61 away from the second layer plate 62. Figure 11 The first layer plate 61 extends above the second layer plate 62 to support the cookware on the energy-concentrating pot rack 6, and a gap is formed between the bottom of the cookware and the energy-concentrating pot rack 6 for the flow of high-temperature flue gas. Multiple second pot supports 67 are equally spaced in a ring around the third layer plate 63, and are respectively oriented towards the side of the third layer plate 63 away from the second layer plate 62. Figure 11 The third layer 63 (as shown) extends below, thereby supporting the energy-concentrating pot rack 6 together with the pot on the cooktop panel 1. Especially when a liquid tray 12 is provided at the combustion hole 11 of the cooktop panel 1, the energy-concentrating pot rack 6 together with the pot can be supported on the liquid tray 12 by the second pot support 67, thereby indirectly supporting the energy-concentrating pot rack 6 and the pot together on the cooktop panel 1. The separate first pot support 66 and second pot support 67 prevent the high temperature heat of the first pot support 66 of the energy-concentrating pot rack 6 from being conducted to the second pot support 67, causing heat loss. At the same time, there are four of each of the first pot support 66 and the second pot support 67, and the thickness of each of the first pot support 66 and the second pot support 67 is about 3.5mm. Reducing the thickness of the material used for the first pot support 66 and the second pot support 67 also helps to reduce costs and reduce heat loss.

[0067] Specifically, the first layer plate 61 has a first positioning hole 612 corresponding to the position of the first pot support 66, and the bottom of the first pot support 66 has a first positioning part 661 that matches the first positioning hole 612. The first positioning part 661 is inserted into the first positioning hole 612 and then welded to fix it. The third layer plate 63 has a second positioning hole 632 corresponding to the position of the second pot support 67, and the middle of the second pot support 67 has a second positioning part 671 that matches the second positioning hole 632. The second positioning part 671 is inserted into the second positioning hole 632 and then welded to fix it.

[0068] In this embodiment of the invention, the term "multiple" refers to two or more, unless otherwise explicitly defined. The terms "install," "connect," and "fix" should be interpreted broadly. For example, "connect" can mean a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention based on the specific circumstances.

[0069] In the description of the embodiments of the present invention, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0070] In the description of this specification, the terms "an embodiment," "a preferred embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0071] The above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. For those skilled in the art, the embodiments of the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of the present invention should be included within the protection scope of the embodiments of the present invention.

Claims

1. A base assembly characterized by, include: The base body (31) has a plate-like structure; At least three nozzle mounting seats (32), each nozzle mounting seat (32) is respectively connected to the top of the base body (31) and extends vertically from the top of the base body (31) to a side away from the base body (31), and each nozzle mounting seat (32) is provided with a nozzle (321) on its top; and An outer ring air passage (33) and a central air passage (34) are respectively disposed at the bottom of the base body (31). The central air passage (34) extends parallel to the base body (31) and communicates with one of the nozzle mounting seats (32). The outer ring air passage (33) extends parallel to the base body (31) and communicates with the remaining nozzle mounting seats (32). Among them, the outer ring airway (33) and the central airway (34) have overlapping portions in their projections on the base body (31), and the distance between the outer ring airway (33) and the base body (31) is smaller than the distance between the central airway (34) and the base body (31). The outer ring air passage (33) includes a first air passage (331) and a second air passage (332) extending along the gas flow direction. The first air passage (331) and the second air passage (332) are respectively straight segments, and the first air passage (331) and the second air passage (332) are arranged at an obtuse angle. The central airway (34) is a straight segment and its air inlet end is located on the same side of the periphery of the base body (31) as the air inlet end of the first airway (331). The second airway (332) and the central airway (34) have overlapping portions in their projections on the base body (31).

2. The base assembly of claim 1, wherein, The base body (31) is rectangular in shape, and the at least three nozzle mounting seats (32) include a first outer ring nozzle seat (322) and a second outer ring nozzle seat (323) respectively connected to the top of the base body (31). The first outer ring nozzle seat (322) and the second outer ring nozzle seat (323) are respectively located at the two ends of the diagonal of the base body (31).

3. The base assembly according to claim 2, characterized in that, The nozzles (321) installed on the first outer ring nozzle seat (322) and the second outer ring nozzle seat (323) are parallel in axis and the outlets of the two nozzles (321) are oriented opposite to each other.

4. The base assembly according to claim 3, characterized in that, The at least three nozzle mounting seats (32) further include a central nozzle seat (324) mounted on the top of the base body (31), wherein the nozzle (321) mounted on the central nozzle seat (324) is axially parallel to the nozzle (321) mounted on the second outer ring nozzle seat (323), and the outlets of the two nozzles (321) are oriented in the same direction.

5. The base assembly according to claim 2, characterized in that, The top of the first outer ring nozzle seat (322) and the second outer ring nozzle seat (323) are provided with positioning posts (325).

6. The base assembly according to any one of claims 2 to 5, characterized in that, The end of the first air passage (331) away from the second air passage (332) extends toward the base body (31) to form a third air passage (333) communicating with the first outer ring nozzle seat (322), and the end of the second air passage (332) away from the first air passage (331) extends toward the base body (31) to form a fourth air passage (334) communicating with the second outer ring nozzle seat (323).

7. The base assembly according to any one of claims 1 to 5, characterized in that, The base body (31) has a support ring (311) that protrudes outward from the middle of its top.

8. The base assembly according to any one of claims 1 to 5, characterized in that, Multiple fixed legs (312) are provided at intervals along the periphery of the base body (31), and each fixed leg (312) is provided with multiple support protrusions (3122) protruding away from the base body (31).

9. A stove, characterized in that, include: The base assembly as described in any one of claims 1 to 8; as well as The fire distributor assembly (4) has a positioning ring (42) and a blind hole (41) protruding outward from the bottom. The positioning ring (42) matches the support ring (311) of the base body (31), and the blind hole (41) matches the positioning post (325) of the nozzle mounting seat (32).

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