A stove head assembly for a top-inlet gas stove and a gas stove

Abstract

This application relates to a burner assembly and a gas stove for an upward-intake gas stove, including a gas burner, a gas base, and a heat-insulating outer cover. The gas burner includes an outer ring burner, a central burner, an outer ejector tube, and a central ejector tube. The gas base has an outer ring gas supply seat corresponding to the outer ejector tube and a central gas supply seat corresponding to the central ejector tube. The heat-insulating outer cover includes a heat-collecting ring located outside the outer ring burner, a supporting sidewall for placement on the stovetop panel, and a connecting portion connecting the heat-collecting ring and the supporting sidewall. The supporting sidewall has multiple air inlets circumferentially penetrating the inner and outer surfaces. The burner assembly of the upward-intake gas stove also has at least one gas supply channel communicating with the inner cavity of the heat-insulating outer cover for secondary air flow. This application reduces the impact of indoor temperature on the thermal efficiency of the upward-intake gas stove and improves combustion thermal efficiency, helping to reduce the carbon monoxide content generated during operation.

Description

Technical Field

[0001] This application relates to a top-intake gas stove, and more particularly to a burner assembly and a gas stove for a top-intake gas stove. Background Art

[0002] A top-intake gas stove refers to a gas stove where the gas nozzle, injector tube, mixing chamber, and burner cap are all located above the cooktop. When operating, the gas nozzle injects gas into the injector tube, which then draws air from above the cooktop into the injector tube, where it mixes with the gas in the mixing chamber. Finally, the mixture is exhausted through the burner cap's outlet and ignited. In the gas stove industry, the air carried into the injector tube by the gas nozzle is called primary air, while the mixture exhausted by the burner cap is called secondary air.

[0003] In existing top-intake gas stoves, the primary air typically comes from the inlet of the injector tube, while the secondary air typically comes from the area near the burner. The temperatures of both the primary and secondary air depend on the indoor temperature of the kitchen, making the indoor temperature significantly impact the thermal efficiency of top-intake gas stoves. Summary of the Invention

[0004] In order to reduce the impact of indoor temperature on the thermal efficiency of an upward-intake gas stove, this application provides a burner assembly and a gas stove for an upward-intake gas stove.

[0005] In a first aspect, this application provides a burner assembly for a top-intake gas stove, employing the following technical solution:

[0006] A burner assembly for a top-intake gas stove includes a gas burner, a gas base, and a heat-insulating outer cover. The gas burner includes an outer ring burner, a central burner located inside the outer ring burner, an outer ejector pipe connected to the outer ring burner, and a central ejector pipe connected to the central burner. The gas base has an outer ring gas supply seat corresponding to the outer ejector pipe and a central gas supply seat corresponding to the central ejector pipe. The heat-insulating outer cover includes a heat-collecting ring located outside the outer ring burner, a supporting sidewall for placement on the stovetop panel, and a connecting portion connecting the heat-collecting ring and the supporting sidewall. The supporting sidewall has multiple air inlets circumferentially penetrating the inner and outer surfaces. The burner assembly for the top-intake gas stove also has at least one gas supply channel communicating with the inner cavity of the heat-insulating outer cover for secondary air flow.

[0007] By adopting the above technical solution, when the gas stove with the aforementioned burner assembly is in operation, the heat-collecting ring in the heat-insulating outer casing is heated first. The heat-collecting ring then transfers heat to the connecting parts and supporting sidewalls in the heat-insulating outer casing, thereby maintaining the temperature of the entire heat-insulating outer casing at a high level, and thus ensuring that the internal temperature of the heat-insulating outer casing remains at a high level. When air enters the internal cavity of the heat-insulating outer casing through the air inlet, the air is gradually heated and maintained at a high temperature.

[0008] This portion of air is divided into three parts within the inner cavity of the heat-insulating outer casing: The first part of air is drawn into the outer injector tube during the injection of gas from the outer ring gas supply seat, mixing with the gas in the outer ring burner, thus raising the temperature of the gas in the outer ring burner. This mixture is then discharged from the outer ring burner cap and ignited. The second part of air is drawn into the central injector tube during the injection of gas from the central gas supply seat, mixing with the gas in the central burner, thus raising the temperature of the gas in the inner ring burner. This mixture is then discharged from the central burner cap and ignited. The third part of air assists combustion in both the central burner and the outer ring burner through the aforementioned gas supply channels. The first and second parts of air are considered primary air, while the third part is considered secondary air.

[0009] Because the gas stove with the above-mentioned burner assembly is in operation, the primary air, secondary air, and gas are all heated to an appropriate temperature when ignited. This makes the temperature of the primary air, secondary air, and gas less affected by the room temperature, which helps the gas to burn completely. The negative pressure effect generated during gas combustion is more pronounced, resulting in a larger amount of primary and secondary air participating in combustion. This improves the combustion thermal efficiency of the burner assembly of the above-intake gas stove and helps reduce the carbon monoxide content produced by the burner assembly during operation.

[0010] Optionally, a gas supply ring cavity is formed between the outer ring burner and the central burner, and the gas seat is provided with a support structure supporting the gas burner, so that a gas supply partition is formed between the outer ring burner and the cooktop panel, which communicates with the gas supply ring cavity. The gas supply ring cavity and the gas supply partition constitute a gas supply channel.

[0011] By adopting the above technical solution, a specific form of gas supply channel is provided. This gas supply channel consists of a gas supply partition and a gas supply ring cavity. Preheated air can pass sequentially through the gas supply partition and the gas supply ring cavity to move between the outer ring burner and the central burner. Part of this provides secondary air to the outer ring burner, and the other part provides secondary air to the central burner. Because this type of gas supply channel can accommodate a large volume of secondary air, it helps ensure that more secondary air participates in the combustion of the gas, further improving the completeness of combustion, increasing combustion thermal efficiency, and reducing carbon monoxide content.

[0012] Optionally, the support structure includes the outer ring gas supply seat and the central gas supply seat, wherein the outer ring gas supply seat is supported on the bottom of the outer ring burner, and the central gas supply seat is supported on the bottom of the outer ring burner.

[0013] By adopting the above technical solution, the outer ring gas supply seat and the central gas supply seat are used to support the outer ring burner head. Compared with setting other structures on the gas seat to support the gas burner head, the structure is more compact, and the support structure has less impact on the maximum air flow of the gas supply compartment.

[0014] Optionally, a gas supply gap is formed between the outer ring burner and the heat-gathering ring for supplying secondary air, and the gas supply gap constitutes another gas supply channel.

[0015] By adopting the above technical solution, another specific form of gas supply channel is provided. Since this gas supply channel can only provide secondary air to the outer ring burner, it needs to be set up in conjunction with the first type of gas supply channel. Because this gas supply channel can provide preheated secondary air to the outside of the outer ring burner, both the inner and outer sides of the gas discharged from the outer ring burner have preheated secondary air, which helps to ensure the complete combustion of this part of the gas, ensures the thermal efficiency of gas combustion, and reduces the content of carbon monoxide produced by combustion.

[0016] Optionally, the outer ring burner head is provided with at least three limiting protrusions that abut against the heat-gathering ring.

[0017] By adopting the above technical solution, the setting of the limiting protrusion can assist in the installation of the heat insulation cover on the outside of the gas stove head, avoid the heat insulation cover from shifting on the outside of the gas stove head, and help ensure the size of the gas supply gap.

[0018] Optionally, the outer ring burner is threaded with an adjustment component for adjusting the size of the gas supply gap. The adjustment component includes an adjustment part that can be inserted from bottom to top between the outer ring burner and the energy-concentrating ring, and the outer diameter of the adjustment part gradually decreases along the height direction.

[0019] By adopting the above technical solution, since there are two gas supply channels to provide secondary air to the outer ring burner, and the main function of the secondary air is to provide combustion aid for the gas, the flame deflection generated at the outer ring burner can be adjusted by adjusting the proportion of secondary air in the two gas supply channels.

[0020] When it is necessary to deflect the flame of the outer ring burner outward, the gas supply gap can be increased to increase the supply of secondary air to the outer ring burner, thus causing the flame produced by the outer ring burner to deflect outward. When it is necessary to deflect the flame of the outer ring burner inward, the gas supply gap can be decreased to reduce the supply of secondary air to the outer ring burner, while increasing the relative supply of secondary air to the inner ring burner, thus causing the flame produced by the outer ring burner to deflect inward.

[0021] Optionally, the bottom of the adjusting component is also provided with an adjusting lever.

[0022] By adopting the above technical solution, the adjustment lever can be easily rotated at the outer ring burner head to adjust the size of the gas supply gap.

[0023] Optionally, the outer ring burner is provided with two external ejector tubes, which are arranged at even intervals around the circumference.

[0024] By adopting the above technical solution, two external ejector pipes can simultaneously supply gas and primary air to the outer ring burner, ensuring the amount of gas and primary air discharged from the outer ring burner. Furthermore, the two external ejector pipes are evenly arranged circumferentially, minimizing mutual interference when drawing in preheated air.

[0025] Optionally, the central ejector tube extends below the outer ring burner head.

[0026] By adopting the above technical solution, the inlet of the central ejector tube is not located below the gas supply ring cavity. This means that when the central gas supply seat injects gas into the central ejector tube, the primary air entering the central ejector tube has less impact on the gas supply ring cavity, which helps to maintain a relatively stable supply of secondary air in the gas supply ring cavity.

[0027] If the inlet of the central ejector is located below the gas supply ring cavity, when the gas is injected into the central ejector, it will bring the surrounding air into the central ejector as primary air, which will affect the gas supply in the gas supply ring cavity, especially the gas supply in the area above the central ejector.

[0028] Secondly, this application provides a gas stove, which adopts the following technical solution:

[0029] A gas stove includes the burner assembly of the aforementioned top-intake gas stove.

[0030] By adopting the above technical solution, the gas stove has the burner head assembly of the above-mentioned top-intake gas stove, so that the thermal efficiency and carbon monoxide index of the gas stove are both relatively ideal.

[0031] In summary, this application includes at least one of the following beneficial technical effects:

[0032] 1. A burner assembly for an upward-intake gas stove, which heats primary and secondary air through a heat-insulating outer cover, so that the temperature of primary air, secondary air and gas is less affected by the indoor temperature, thereby improving the combustion thermal efficiency of the burner assembly and helping to reduce the carbon monoxide content generated by the burner assembly during operation.

[0033] 2. The burner assembly of the top-intake gas stove includes two gas supply channels. One gas supply channel consists of a gas supply partition and a gas supply ring cavity, while the other gas supply channel consists of a gas supply gap. The two gas supply channels simultaneously provide secondary air to the outer ring burner, which helps to fully combust the gas discharged from the outer ring burner, ensures the thermal efficiency of gas combustion, and reduces the content of carbon monoxide produced by combustion.

[0034] 3. The burner assembly of the top-intake gas stove can adjust the size of the gas supply gap by setting adjustment components, thereby adjusting the position of the flame generated by the outer ring burner, so that the burner assembly of the top-intake gas stove can adapt to more working states.

[0035] 4. A gas stove, having a burner assembly with the above-mentioned top-intake gas stove, achieves ideal thermal efficiency and carbon monoxide levels. Attached Figure Description

[0036] Figure 1 This is an exploded schematic diagram of the burner assembly of the top-intake gas stove in Example 1.

[0037] Figure 2 This is a schematic diagram of the top of the gas stove head in Example 1.

[0038] Figure 3 This is a schematic diagram of the bottom of the gas stove head in Example 1.

[0039] Figure 4 This is a schematic diagram of the explosion of the gas stove head in Example 1.

[0040] Figure 5 This is a schematic diagram of the top of the gas holder in Example 1.

[0041] Figure 6 This is a schematic diagram of the bottom of the gas holder in Example 1.

[0042] Figure 7 This is a cross-sectional schematic diagram of the stove panel, gas seat, and gas burner head in Example 1.

[0043] Figure 8 This is a cross-sectional schematic diagram of the burner assembly of the top-intake gas stove in Example 1.

[0044] Figure 9 This is a cross-sectional schematic diagram of the burner assembly of the top-intake gas stove in Example 2.

[0045] Figure 10 This is a cross-sectional schematic diagram of the burner assembly of the top-intake gas stove in Example 3.

[0046] Figure 11 yes Figure 10 Enlarged diagram of point A in the middle.

[0047] Figure 12 This is a structural schematic diagram of the adjustment component in Example 3.

[0048] Explanation of reference numerals in the attached diagram: 1. Stovetop panel; 2. Gas burner head; 21. Gas supply ring cavity; 22. Gas supply partition; 23. Gas supply gap; 3. Outer ring burner head; 31. Outer injector tube; 32. Outer ring seat; 33. Outer ring burner cap; 331. Annular protrusion; 332. Outer gas supply slope; 333. Outer gas outlet; 34. Outer ring mixing cavity; 35. Windbreak section; 351. Guide slope; 36. Gas supply unit; 37. Limiting protrusion; 4. Central burner head; 41. Central injector tube; 42. Central seat; 43. Central burner cap; 432. Central gas supply slope; 433. Central gas outlet; 44. Central mixing cavity; 45. Positioning seat; 451. Positioning hole; 46. 461. Locking seat; 462. Locking bolt; 47. Connecting rod; 5. Gas seat; 51. Mounting plate; 52. Outer ring gas supply seat; 521. Outer ring nozzle; 522. First pipe interface; 53. Central gas supply seat; 531. Central nozzle; 532. Second pipe interface; 54. Connecting pipe; 55. Positioning post; 56. Locking post; 6. Heat insulation cover; 61. Heat-concentrating ring; 611. Heat-concentrating side plate; 612. Heat-concentrating base plate; 613. Heat-concentrating flange; 62. Support side wall; 621. Air inlet; 63. Connecting part; 64. Support foot; 7. Adjusting component; 71. Mounting part; 72. Adjusting part; 73. Adjusting lever. Detailed Implementation

[0049] The following is in conjunction with the appendix Figure 1-12 This application will be described in further detail.

[0050] This application discloses a burner assembly for a top-intake gas stove.

[0051] Example 1

[0052] Reference Figure 1 A gas stove with top air intake includes a gas burner 2, a gas base 5, and a heat insulation cover 6. The gas burner 2 is mounted on the gas base 5 and is located above the stove panel 1. The gas base 5 is mounted below the stove panel 1 and has a partial structure that penetrates the stove panel 1 to support the gas burner 2. The heat insulation cover 6 is placed on the stove panel 1 and is arranged on the outside of the gas burner 2.

[0053] Reference Figure 2 and Figure 3 The gas stove head 2 includes an outer ring stove head 3, a central stove head 4 arranged inside the outer ring stove head 3, an outer injector pipe 31 connected to the outer ring stove head 3, and a central injector pipe 41 connected to the central stove head 4. A gas supply ring cavity 21 is formed between the outer ring stove head 3 and the central stove head 4.

[0054] Reference Figure 4 The outer ring burner head 3 includes an outer ring seat 32 and an outer ring burner cap 33 mounted on the outer ring seat 32. The outer ring burner head 3 has an outer ring mixing chamber 34 for mixing gas and primary air. The outer ring burner cap 33 has an annular protrusion 331 on its inner top side. The outer wall of the annular protrusion 331 is an external gas supply slope 332, and the external gas supply slope 332 slopes downward away from the center of the outer ring burner cap 33. An external gas supply slope 332 has an outlet vent 333 communicating with the outer ring mixing chamber 34 for discharging the mixture of gas and primary air.

[0055] Reference Figure 3 and Figure 4 The gas burner head 2 has two external injection pipes 31. These two external injection pipes 31 are evenly arranged circumferentially at the bottom of the outer ring burner head 3, and both are inclined. The external injection pipes 31 are integrally formed with the outer ring seat 32 of the outer ring burner head 3, so that the external injection pipes 31 form a wind-blocking section 35 inside the outer ring seat 32. The wind-blocking section 35 divides the outer ring mixing chamber 34 into two identical gas supply units 36, so that each external injection pipe 31 mainly supplies gas to its corresponding gas supply unit 36. The wind-blocking section 35 does not completely isolate the outer ring cavity, and its top surface has a guide slope 351 to assist in the flow of some gas and primary air from one gas supply unit 36 ​​to the other through the guide slope 351.

[0056] Reference Figure 4The central burner head 4 includes a central base 42 and a central burner cap 43 mounted on the central base 42. The central burner head 4 has a hollow cylindrical structure and a central mixing chamber 44 for mixing fuel gas and primary air. The central burner cap 43 has a central gas supply slope 432, which slopes downwards along an axis away from the central burner cap 43. The central gas supply slope 432 has central air outlet holes 433 evenly distributed circumferentially for discharging the mixture of fuel gas and primary air.

[0057] Reference Figure 3 and Figure 4 The central ejector tube 41 is connected to the central seat 42 of the central burner 4 and is arranged at an angle downward away from the central seat 42. The end of the central ejector tube 41 away from the central seat 42 is connected to the bottom of the outer ring seat 32, so that the opening of the central ejector tube 41 is located at the bottom of the outer ring seat 32. The central ejector tube 41, the outer ring seat 32 and the central seat 42 are integrally formed.

[0058] Reference Figure 1 , Figure 3 and Figure 5 The gas socket 5 includes a mounting plate 51 for supporting the bottom surface of the cooktop panel 1, two outer ring gas supply seats 52 connected to the mounting plate 51 and corresponding to the outer injector pipe 31, and a central gas supply seat 53 connected to the mounting plate 51 and corresponding to the central injector pipe 41. The two outer ring gas supply seats 52 and the central gas supply seat 53 all extend through the cooktop panel 1 to the top of the cooktop panel 1.

[0059] Reference Figure 3 and Figure 6 Both outer ring gas supply seats 52 have a first gas passage for connecting to a gas pipeline and an outer ring nozzle 521 installed opposite the opening of the outer ejector pipe 31. The outer ring nozzle 521 is arranged at an upward angle, with its injection axis coinciding with the axis of the outer ejector pipe 31. The gas seat 5 also has a connecting pipe 54 connecting the two outer ring gas supply seats 52 and communicating with the first gas passage of both outer ring gas supply seats 52. One of the outer ring gas supply seats 52 is provided with a first pipe interface 522 for connecting to a gas pipeline, so that only one gas pipeline is needed to supply gas to both outer ring gas supply seats 52.

[0060] Reference Figure 3 and Figure 6 The central gas supply base 53 has a second gas passage for communication with a gas pipeline and a central nozzle 531 installed directly opposite the inlet of the central injector pipe 41. The central nozzle 531 is arranged at an upward angle, with its injection axis coinciding with the axis of the central injector pipe 41. The central gas supply base 53 is also provided with a second pipe interface 532 for connection with the gas pipeline.

[0061] Reference Figure 1 and Figure 5 The gas seat 5 is also equipped with a support structure for supporting the gas burner head 2. The support structure includes the two outer ring gas supply seats 52, the central gas supply seat 53, the positioning post 55, and the locking post 56. The two outer ring gas supply seats 52 and the central gas supply seat 53 all abut against the bottom surface of the outer ring burner head 3, supporting the gas burner head 2 through three support points. The positioning post 55 and the locking post 56 extend through the cooktop panel 1 to the top of the cooktop panel 1.

[0062] Reference Figure 3 and Figure 5 The gas stove head 2 is provided with a positioning seat 45 that mates with the positioning pin 55. The bottom surface of the positioning seat 45 has a positioning hole 451 for the positioning pin 55 to be inserted. The gas stove head 2 is also provided with a locking seat 46 that mates with the locking pin 56. The locking seat 46 is also provided with a locking countersunk hole 461 for the locking pin 56 to be inserted on its bottom surface. The locking seat 46 is also provided with a locking bolt 462 that is arranged in the locking countersunk hole 461 and threadedly engaged with the locking pin 56.

[0063] Reference Figure 5 and Figure 7 The support structure on the gas seat 5 can position and support the gas burner 2, so that a gas supply partition 22 communicating with the gas supply ring cavity 21 is formed between the outer ring burner 3 and the cooktop panel 1. The gas supply partition 22 and the gas supply ring cavity 21 form a gas supply channel, so that the air outside the gas burner 2 can sequentially pass through the gas supply partition 22 and the gas supply ring cavity 21 to provide secondary air to the outer ring burner 3 and the central burner 4.

[0064] Reference Figure 3 The positioning seat 45 and locking seat 46 are arranged on the outside of the central burner 4 and are integrally set with the central burner 4. The positioning seat 45 is located on the side of the central burner 4 away from the central injector tube 41. The positioning seat 45 is also integrally connected to the connecting rod 47 that connects to the outer ring seat 32, so that the central burner 4 can be connected to the outer ring seat 32 through the central injector tube 41, the positioning seat 45 and the connecting rod 47, which helps to improve the structural strength of the entire gas burner 2.

[0065] Reference Figure 8 The heat insulation cover 6 includes a heat-gathering ring 61 located outside the outer ring of the stove head 3, a supporting sidewall 62 for placement on the stove panel 1, and a connecting part 63 connecting the heat-gathering ring 61 and the supporting sidewall 62. The heat insulation cover 6 is made of metal, which allows the heat-gathering ring 61, the supporting sidewall 62, and the connecting part 63 in the heat insulation cover 6 to conduct heat well.

[0066] Reference Figure 8The supporting sidewall 62 has a circular annular structure. Air inlets 621, penetrating both the inner and outer surfaces, are evenly distributed circumferentially in the lower region of the supporting sidewall 62. The air inlets 621 are strip-shaped holes arranged along the height direction. The heat-collecting ring 61 has a U-shaped cross-section. The heat-collecting ring 61 includes a heat-collecting side plate 611 connected to the connecting part 63 and bent downwards, a heat-collecting bottom plate 612 connected to the bottom of the heat-collecting side plate 611 and arranged horizontally, and a heat-collecting flange 613 connected to the heat-collecting bottom plate 612 and bent upwards. The heat-insulating outer cover 6 has heat-collecting grooves formed at the heat-collecting ring 61 to receive heat generated during gas combustion and transfer it to the supporting sidewall 62. The connecting part 63 has four support feet 64 at its top. The four support feet 64 are evenly distributed circumferentially on the top surface of the connecting part 63 to support the cookware.

[0067] Reference Figure 3 and Figure 8 When the heat insulation cover 6 is installed on the cooktop panel 1 and positioned outside the gas burner head 2, a gas supply gap 23 is formed between the heat-collecting ring 61 of the heat insulation cover 6 and the outer ring burner head 3 of the gas burner head 2, allowing air to pass through the gas supply gap 23 to provide secondary air to the outer ring burner head 3. To assist in the installation of the heat insulation cover 6 and ensure the size of the gas supply gap 23, four limiting protrusions 37 are evenly arranged circumferentially on the outer wall of the outer ring burner head 3 for the heat-collecting flange 613 of the heat-collecting ring 61 to abut against.

[0068] Combination Figures 1 to 8 The implementation principle of the burner assembly of the top-intake gas stove in Example 1 is as follows:

[0069] When the gas stove is started, the heat-collecting ring 61 of the heat insulation cover 6 can receive part of the heat generated by the combustion of gas, so that the heat-collecting ring 61 can be maintained at a high temperature relatively quickly. The heat-collecting ring 61 transfers heat to other parts of the heat insulation cover 6, thereby keeping the heat insulation cover 6 at a high temperature. Air enters the heat insulation cover 6 through the air inlet 621 and is heated and maintained at a relatively high temperature. Part of the air entering the heat insulation cover 6 is carried as primary air into the central burner 4 or the outer ring burner 3 to mix with the gas. During the mixing process, the primary air heats the gas, and part of it is used as... Secondary air is supplied to the central burner 4 or the outer ring burner 3 through the channel formed by the gas supply partition 22 and the gas supply ring cavity 21. Another part is supplied to the outer ring burner 3 as secondary air through the gas supply gap 23. Firstly, since the primary air, secondary air and gas are all heated, the heat loss of the combustion generated is less due to heating the air and gas, which improves the thermal efficiency of gas combustion and allows the gas to be fully burned. Furthermore, since the secondary gas supply channel of the burner assembly of the above-mentioned top-intake gas stove is large, the air required for gas combustion is sufficient, which reduces the carbon monoxide content produced by incomplete combustion of gas.

[0070] Example 2

[0071] Compared with the burner assembly of the top-intake gas stove in Embodiment 1, the difference in this embodiment is that there is no gas supply gap 23 between the heat-gathering ring 61 in the heat insulation cover 6 and the outer ring burner 3, and the outer side of the outer ring burner 3 is not provided with a limiting protrusion 37. The rest of the structure is the same as the burner assembly of the top-intake gas stove in Embodiment 1.

[0072] Reference Figure 9 When the heat insulation cover 6 is installed on the stove panel 1 and located outside the gas stove head 2, the heat-gathering flange 613 of the heat-gathering ring 61 abuts against the outer wall of the outer ring stove head 3, so that there is no gap between the heat-gathering ring 61 and the outer ring stove head 3. That is, after the stove head assembly of the above-mentioned top-intake gas stove is started, the preheated air in the inner cavity of the heat insulation cover 6 can only provide secondary air to the outer ring stove head 3 through the gas supply channel formed by the gas supply partition 22 and the gas supply ring cavity 21.

[0073] Example 3

[0074] Compared with the burner assembly of the top-intake gas stove in Embodiment 1, the difference in this embodiment is that an adjustment component 7 for adjusting the size of the gas supply gap 23 is also provided on the outer side of the outer burner, and the outer ring burner 3 does not have a limiting protrusion 37 on the outer side. The rest of the structure is the same as the burner assembly of the top-intake gas stove in Embodiment 1.

[0075] Reference Figure 10 and Figure 11 The outer ring burner head 3 is also provided with an adjusting component 7 for adjusting the size of the gas supply gap 23. The adjusting component 7 includes a mounting part 71 threaded onto the outer ring burner head 3 and an adjusting part 72 connected to the top of the mounting part 71 and inserted from bottom to top between the outer ring burner head 3 and the heat-concentrating ring 61. Both the mounting part 71 and the adjusting part 72 are annular structures, and the inner diameter of the adjusting part 72 is larger than the outer diameter of the outer ring burner head 3, so that the adjusting part 72 will not interfere with the external thread of the outer ring burner head 3 during the lifting and lowering process.

[0076] Reference Figure 10 and Figure 11 The outer diameter of the adjusting part 72 gradually decreases along the height direction, so that when the adjusting part 72 moves upward, the air supply gap 23 between the adjusting part 72 and the heat-collecting ring 61 gradually decreases; when the adjusting part 72 moves downward, the air supply gap 23 between the adjusting part 72 and the heat-collecting ring 61 gradually increases, thereby achieving the purpose of adjusting the air supply gap 23.

[0077] Reference Figure 11 and Figure 12To facilitate the rotation of the adjusting component 7, two adjusting levers 73 are symmetrically arranged at the lower edge of the mounting part 71. When it is necessary to adjust the size of the air supply gap 23, the user can hold the adjusting levers 73 to rotate the adjusting component 7.

[0078] Combination Figures 10 to 12 The implementation principle of the burner head assembly of the top-intake gas stove in Example 3 is as follows: Since the burner head assembly of the top-intake gas stove has two gas supply channels to provide secondary air to the outer ring burner head 3, the size of the gas supply gap 23 can be adjusted, thereby adjusting the flame position generated by the outer ring burner head 3.

[0079] When it is necessary to deflect the flame of the outer ring burner 3 outward, the gas supply gap 23 can be increased to increase the supply of secondary air to the outer ring burner 3, thereby causing the flame generated by the outer ring burner 3 to deflect outward.

[0080] When it is necessary to deflect the flame of the outer ring burner 3 inward, the gas supply gap 23 can be reduced, which reduces the supply of secondary air on the outside of the outer ring burner 3 and increases the relative supply of secondary air on the inside of the outer ring burner 3, thus causing the flame generated by the outer ring burner 3 to deflect inward.

[0081] Example 4

[0082] The gas stove in this embodiment includes the burner assembly of the top-intake gas stove in Example 1.

[0083] Example 5

[0084] The gas stove in this embodiment includes the burner assembly of the top-intake gas stove in Example 2.

[0085] Example 6

[0086] The gas stove in this embodiment includes the burner assembly of the top-intake gas stove in Example 3.

[0087] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A burner assembly for a top-intake gas stove, characterized in that, The gas stove includes a gas burner head (2), a gas seat (5), and a heat insulation cover (6); the gas burner head (2) includes an outer ring burner head (3), a central burner head (4) located inside the outer ring burner head (3), an outer ejector pipe (31) connected to the outer ring burner head (3), and a central ejector pipe (41) connected to the central burner head (4); the gas seat (5) is provided with an outer ring gas supply seat (52) corresponding to the outer ejector pipe (31) and a central gas supply seat (53) corresponding to the central ejector pipe (41). The heat insulation cover (6) includes a heat-gathering ring (61) located outside the outer ring burner (3), a supporting sidewall (62) for placing on the stove panel (1), and a connecting part (63) connecting the heat-gathering ring (61) and the supporting sidewall (62); the supporting sidewall (62) is provided with a plurality of air inlets (621) that penetrate the inner and outer surfaces in a circumferential manner; the burner assembly of the top-intake gas stove is also provided with at least one gas supply channel that communicates with the inner cavity of the heat insulation cover (6) and is used to supply secondary air out. A gas supply ring cavity (21) is formed between the outer ring burner (3) and the central burner (4). The gas seat (5) is provided with a support structure that supports the gas burner (2), so that a gas supply partition (22) communicating with the gas supply ring cavity (21) is formed between the outer ring burner (3) and the stove panel (1). The gas supply ring cavity (21) and the gas supply partition (22) constitute a gas supply channel. The support structure includes the outer ring gas supply seat (52) and the center gas supply seat (53). The outer ring gas supply seat (52) is supported on the bottom of the outer ring burner (3), and the center gas supply seat (53) is supported on the bottom of the outer ring burner (3). A gas supply gap (23) for supplying secondary air is formed between the outer ring burner (3) and the heat-gathering ring (61), and the gas supply gap (23) constitutes another gas supply channel; The outer ring burner (3) is threaded with an adjustment member (7) for adjusting the size of the gas supply gap (23). The adjustment member (7) includes an adjustment part (72) that can be inserted from bottom to top between the outer ring burner (3) and the heat-collecting ring (61). The outer diameter of the adjustment part (72) gradually decreases along the height direction.

2. The burner assembly of a top-intake gas stove according to claim 1, characterized in that, The outer ring burner (3) is provided with at least three limiting protrusions (37) that abut against the heat-gathering ring (61) in the circumferential direction.

3. The burner assembly of a top-intake gas stove according to claim 1, characterized in that, The bottom of the adjustment component (7) is also provided with an adjustment lever (73).

4. The burner assembly of a top-intake gas stove according to claim 1, characterized in that, The outer ring burner (3) is provided with two external ejector tubes (31), which are arranged evenly spaced around the perimeter.

5. The burner assembly of a top-intake gas stove according to claim 1, characterized in that, The central ejector tube (41) extends below the outer ring burner (3).

6. A gas stove, characterized in that, The burner assembly of the top-intake gas stove as described in any one of claims 1 to 5.

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