Burner Assemblies, Burners and Gas Stoves

Abstract

The present invention discloses a burner assembly, a burner, and a gas stove. The burner assembly includes: a main ejector tube comprising a main straight tube and a main spiral tube connected to the main straight tube; a burner having an outer cavity, and the main spiral tube spiraling upward at one end away from the main straight tube to connect to the outer cavity; and a through hole extending through the burner along its thickness for a probe of a temperature detection device to pass through. By spiraling the main ejector tube upward, the present invention increases the heat dissipation space of the burner's temperature detection device, thereby facilitating heat dissipation of the temperature detection device.

Description

Technical Field

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

[0002] To improve the versatility of burner head assemblies, they are typically standardized, with the total length of the ejector tube attached to the burner being a fixed value. Increasing the ejector tube length requires increasing the distance between the ejector tube and the burner, which increases the overall height of the burner head assembly. When the temperature detection device is mounted on the burner head assembly, the lower portion of the device is located within the area enclosed by the ejector tube and other components, hindering heat dissipation from the lower portion of the device. Summary of the Invention

[0003] The main purpose of the present invention is to provide a burner head assembly, aiming to increase the heat dissipation space of a temperature detection device.

[0004] To achieve the above-mentioned object, the burner head assembly proposed by the present invention comprises:

[0005] A main ejector tube, comprising a main straight tube and a main spiral tube connected to the main straight tube;

[0006] A burner head, the burner head having an outer cavity, and one end of the main spiral tube away from the main straight tube spirals upward and communicates with the outer cavity;

[0007] The furnace head is provided with a through hole along the thickness direction thereof for the probe of the temperature detection device to pass through.

[0008] Preferably, the burner head assembly comprises:

[0009] A secondary ejector tube, the secondary ejector tube comprising a secondary straight tube and a secondary spiral tube connected to the secondary straight tube;

[0010] The burner head has an inner cavity, which is located inside the outer cavity. One end of the auxiliary spiral tube away from the auxiliary straight tube spirals upward and communicates with the inner cavity.

[0011] Preferably, the main ejector tube and the auxiliary ejector tube are respectively located on both sides of the burner in the radial direction; or, the main ejector tube is located on one side of the burner in the radial direction, and the auxiliary ejector tube is located in the middle of the burner in the radial direction.

[0012] Preferably, the main spiral tube is connected to the outer cavity through a main air inlet, and the opening direction of the main air inlet is arranged at an angle with the bottom surface of the outer cavity, and the angle is an acute angle.

[0013] Preferably, the outer cavity is arranged in an annular shape, and the main spiral tube spirals around the axial axis of the outer cavity.

[0014] Preferably, the main straight tube has a main straight channel, the main spiral tube has a main spiral channel, and the inner wall surface of the main straight channel is tangent to the inner wall surface of the main spiral channel.

[0015] The present invention further provides a burner, comprising:

[0016] A temperature detection device, comprising a temperature sensor and a protection device connected to the temperature sensor;

[0017] A burner head assembly, wherein the detection end of the temperature sensor passes through a through hole of the burner head, and the protection device is located below the burner head;

[0018] Wherein, the burner head assembly includes:

[0019] A main ejector tube, comprising a main straight tube and a main spiral tube connected to the main straight tube;

[0020] A burner head, the burner head having an outer cavity, and one end of the main spiral tube away from the main straight tube spirals upward and communicates with the outer cavity;

[0021] The furnace head is provided with a through hole along the thickness direction thereof for the probe of the temperature detection device to pass through.

[0022] Preferably, the burner also includes a gas distribution plate and an inner fire cover, the gas distribution plate is arranged above the burner head, and the inner fire cover is arranged above the gas distribution plate; an opening is opened in the middle of the inner fire cover, and the opening is connected to the through hole; there is an annular gap between the outer peripheral surface of the temperature sensor and the peripheral edge of the opening, and the width L of the annular gap is 4 to 10 mm.

[0023] Preferably, the width of the annular gap is 5 to 8 mm.

[0024] The present invention further provides a gas stove, comprising a burner, wherein the burner comprises:

[0025] A temperature detection device, comprising a temperature sensor and a protection device connected to the temperature sensor;

[0026] A burner head assembly, wherein the detection end of the temperature sensor passes through a through hole of the burner head, and the protection device is located below the burner head;

[0027] Wherein, the burner head assembly includes:

[0028] A main ejector tube, comprising a main straight tube and a main spiral tube connected to the main straight tube;

[0029] A burner head, the burner head having an outer cavity, and one end of the main spiral tube away from the main straight tube spirals upward and communicates with the outer cavity;

[0030] The furnace head is provided with a through hole along the thickness direction thereof for the probe of the temperature detection device to pass through.

[0031] In the technical solution of the present invention, by configuring the main ejector tube to include a main spiral tube, the length of the main ejector tube is increased without increasing the total length of the burner head assembly. Compared with the existing method in which the connecting section between the ejector tube and the burner head is configured as a straight tube, the configuration of the main spiral tube reduces the total height of the main ejector tube. When the temperature detection device is mounted on the through hole on the burner head, the heat dissipation space below the temperature detection device is increased, thereby facilitating the heat dissipation of the temperature detection device, and effectively improving the working stability of the temperature detection device and ensuring the detection accuracy.

[0032] In addition, by connecting the main spiral tube with the outer cavity of the burner head, the area of ​​the main air inlet at the connection between the main spiral tube and the outer cavity is greatly increased. At the same time, the main spiral tube guides the airflow to flow along the extension direction of the outer cavity, reducing the energy consumed by collision and friction when the airflow enters the outer cavity, thereby facilitating the rapid entry of the airflow and uniform distribution to various positions of the outer cavity, which is conducive to the uniform combustion of the gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0034] Figure 1 This is a schematic structural diagram of an embodiment of a burner of the present invention;

[0035] Figure 2 for Figure 1 Schematic diagram of the explosion structure;

[0036] Figure 3 for Figure 2 Schematic diagram of the structure of the inner fire cover;

[0037] Figure 4 for Figure 3 A partial enlarged view of point A in the middle;

[0038] Figure 5 for Figure 2 Schematic diagram of the structure of the inner fire cover from another angle;

[0039] Figure 6 for Figure 5 A schematic structural diagram of an embodiment is shown at NN in the middle;

[0040] Figure 7 for Figure 5 A structural diagram of another embodiment is shown at NN in the middle;

[0041] Figure 8 for Figure 1 Schematic diagram of the internal structure;

[0042] Figure 9 for Figure 2 Schematic diagram of the structure of the inner and outer fire covers;

[0043] Figure 10 for Figure 9 Schematic diagram of the internal structure;

[0044] Figure 11 for Figure 2 A schematic structural diagram of an embodiment of a middle burner;

[0045] Figure 12 for Figure 11 Structural diagram from another angle;

[0046] Figure 13 It is a structural schematic diagram of another embodiment of the burner of the present invention;

[0047] Figure 14 for Figure 13 A schematic structural diagram of an embodiment of a middle burner;

[0048] Figure 15 for Figure 14 Structural diagram from another angle;

[0049] Figure 16 for Figure 14 Structural diagram from another angle;

[0050] Figure 17 for Figure 16 MM is a structural diagram of an embodiment.

[0051] Description of Figure Numbers:

[0052]

[0053]

[0054] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0055] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0056] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0057] In addition, the descriptions of "first", "second", etc. in the present invention are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0058] The present invention primarily provides a burner, primarily for use in gas stoves, to increase the heat dissipation space for the burner's temperature detection device 500, increase the air inlet area of ​​the inner cavity 312 and the outer cavity 311, reduce the flame's scorching of the temperature detection device 500, and prevent clogging of the flame holes by liquid during cooking. In some embodiments of the present invention, the burner includes a temperature detection device 500 for preventing dry cooking. To ensure stable and accurate operation of the temperature sensor 510, the configuration of the ejector tube and the depth of the inner and outer flame holes 113 and 230 are adjusted.

[0059] The following will mainly describe the specific structure of the burner.

[0060] Reference Figures 1 to 17 In an embodiment of the present invention, the burner includes a burner head assembly 300, a gas distribution plate 400 disposed above the burner head 310, and an outer fire cover 200 and an inner fire cover 100 disposed on the gas distribution plate 400. In some embodiments, the burner further includes a temperature detection device 500 for preventing dry burning. The inner fire cover 100 and the gas distribution plate 400 enclose an inner combustion chamber, and the outer fire cover 200 and the gas distribution plate 400 enclose an outer combustion chamber. The burner head 310 has an inner cavity 312 and an outer cavity 311, the inner cavity 312 is connected to the inner combustion chamber, and the outer cavity 311 is connected to the outer combustion chamber.

[0061] The structures of the burner head assembly 300, the gas distribution plate 400, the outer fire cover 200 and the inner fire cover 100 are described in detail below:

[0062] Taking a two-ring fire structure as an example, the burner assembly 300 includes a burner 310 and a main ejector pipe 320 and a secondary ejector pipe 330 disposed at the lower portion of the burner 310. It is worth noting that in some special embodiments, the burner assembly 300 may include only the main ejector pipe 320 or the secondary ejector pipe 330 connected to the burner 310.

[0063] The burner head 310 has a columnar shape, with a through-hole 350 defined along its central axis. This through-hole 350 extends throughout the burner head 310, allowing the probe of the temperature detection device 500 to pass through. The top of the burner head 310 defines an annular inner cavity 312 and an outer cavity 311, with the outer cavity 311 nestled within the inner cavity 312. To ensure close coordination with the gas distribution plate 400, the sidewalls of the inner cavity 312 are taller than those of the outer cavity 311. The outer walls of the burner head 310 are equipped with mounting lugs for fastening and installation.

[0064] The main ejector pipe 320 and the auxiliary ejector pipe 330 are both connected to the lower portion of the furnace head 310 , and the main ejector pipe 320 is communicated with the outer cavity 311 , and the auxiliary ejector pipe 330 is communicated with the inner cavity 312 .

[0065] The main ejector tube 320 includes a main straight tube 321 and a main spiral tube 322 communicating with the main straight tube 321 ; one end of the main spiral tube 322 away from the main straight tube 321 spirals upward and communicates with the outer cavity 311 .

[0066] In this embodiment, the main ejector tube 320 is configured to include a main spiral tube 322. While increasing the length of the main ejector tube 320 without increasing the overall length of the burner head assembly 300, the main spiral tube 322 reduces the overall height of the main ejector tube 320 compared to the conventional method in which the connecting section between the ejector tube and the burner head 310 is configured as a straight tube. When the temperature detection device 500 is mounted on the through hole 350 on the burner head 310, the heat dissipation space below the temperature detection device 500 is increased, thereby facilitating heat dissipation of the temperature detection device 500, thereby improving the operating stability of the temperature detection device 500 and ensuring detection accuracy.

[0067] In addition, by connecting the main spiral tube 322 with the outer cavity 311 of the burner head 310, the area of ​​the main air inlet at the connection between the main spiral tube 322 and the outer cavity 311 is greatly increased. At the same time, the main spiral tube 322 guides the airflow to flow along the extension direction of the outer cavity 311, reducing the energy consumed by collision and friction when the airflow enters the outer cavity 311, thereby facilitating the rapid entry of the airflow and uniform distribution to various positions of the outer cavity 311, which is conducive to the uniform combustion of the gas.

[0068] In some embodiments, in order to further increase the air intake efficiency of the outer cavity 311, the main spiral tube 322 is connected to the outer cavity 311 through a main air inlet, and the opening direction of the main air inlet is set at an angle with the bottom surface of the outer cavity 311, and the angle is an acute angle. The main air inlet is formed at the position where the main spiral tube 322 is connected to the inner wall of the outer cavity 311. For example, the main air inlet is set in an elliptical shape. After the main spiral tube 322 spirals upward, it extends along the extension direction of the outer cavity 311, minimizing the angle between it and the extension direction of the outer cavity 311 as much as possible, so that when the airflow enters the outer cavity 311 from the main spiral tube 322, it can collide and rub with the side wall of the outer cavity 311 as little as possible, thereby minimizing the loss of wind energy.

[0069] In order to make the main helical tube 322 fit as closely as possible with the outer cavity 311, the outer cavity 311 is configured in an annular shape, and the main helical tube 322 is coiled around the axial axis of the outer cavity 311. This configuration allows the main helical tube 322 and the outer cavity 311 to be coaxially coiled, which helps to improve the consistency of the extension direction of the main helical tube 322 and the outer cavity 311.

[0070] In some embodiments, to improve the smoothness of airflow within the main ejector tube 320, the main straight tube 321 has a main straight channel, and the main spiral tube 322 has a main spiral channel, with the inner wall of the main straight channel being tangent to the inner wall of the main spiral channel. By arranging the main straight channel and the main spiral channel tangent to each other, the airflow can transition very smoothly when entering the main spiral tube 322 from the main straight tube 321, thereby avoiding wind energy loss and facilitating the rapid and uniform distribution of airflow throughout the outer cavity 311.

[0071] The auxiliary ejector tube 330 is arranged in the middle of the radial direction of the burner head 310, and the auxiliary ejector tube 330 includes a auxiliary straight tube 331 and an auxiliary spiral tube 332 connected to the auxiliary straight tube 331; the auxiliary spiral tube 332 spirals upward at one end away from the auxiliary straight tube 331 and is connected to the inner cavity 312 at an angle, so that the size of the auxiliary air inlet of the inner cavity 312 is larger than the radial size of the auxiliary spiral tube 332.

[0072] In this embodiment, by connecting the auxiliary spiral tube 332 with the inner cavity 312 of the burner head 310, the area of ​​the auxiliary air inlet at the connection between the auxiliary spiral tube 332 and the inner cavity 312 is greatly increased, so that the size of the auxiliary air inlet is much larger than the radial size of the auxiliary spiral tube 332; at the same time, the auxiliary spiral tube 332 guides the airflow to flow along the extension direction of the inner cavity 312, reducing the energy consumed by collision and friction when the airflow enters the inner cavity 312, thereby facilitating the rapid entry of the airflow and uniform distribution to various positions of the inner cavity 312, which is conducive to the uniform combustion of the gas.

[0073] At the same time, by setting the auxiliary ejector tube 330 to include an auxiliary spiral tube 332, when the length of the auxiliary ejector tube 330 is increased without increasing the total length of the burner head assembly 300, compared with the existing method of setting the connecting section between the ejector tube and the burner head 310 as an inclined straight tube, the setting of the auxiliary spiral tube 332 reduces the total height of the auxiliary ejector tube 330; when the temperature detection device 500 is installed to the through hole 350 on the burner head 310, the heat dissipation space at the bottom of the temperature detection device 500 is increased, which is beneficial to the heat dissipation of the temperature detection device 500, and is beneficial to improving the working stability of the temperature detection device 500 and ensuring the detection accuracy.

[0074] In order to make the auxiliary helical tube 332 fit as closely as possible with the inner cavity 312, the inner cavity 312 is configured in an annular shape, and the auxiliary helical tube 332 is coiled around the axial axis of the inner cavity 312. This configuration allows the auxiliary helical tube 332 to be coaxially coiled with the inner cavity 312, which helps to improve the consistency of the extension direction of the auxiliary helical tube 332 and the inner cavity 312.

[0075] Regarding the relative position relationship between the main ejector tube 320 and the auxiliary ejector tube 330

[0076] The relative positions of the main ejector tube 320, the auxiliary ejector tube 330 and the furnace head 310 are mainly the following two:

[0077] The main ejector tube 320 and the auxiliary ejector tube 330 are respectively located on both sides of the burner head 310 in the radial direction; alternatively, the main ejector tube 320 is located on one side of the burner head 310 in the radial direction, and the auxiliary ejector tube 330 is located in the middle of the burner head 310 in the radial direction. When the ejector tube and the auxiliary ejector tube 330 are provided to increase the heat dissipation space of the temperature detection device 500, the main ejector tube 320 is located on one side of the lower portion of the burner head 310, while the auxiliary ejector tube 330 is located in the middle or on the other side of the lower portion of the burner head 310, with the auxiliary ejector tube 330 being located on the other side as an example (this provides ample space for the auxiliary spiral tube 332 to coil, allowing the auxiliary spiral tube 332 to be coiled in the most desired manner).

[0078] When the burner head assembly 300 is designed for direct insertion, the primary ejector tube 320 is located radially to one side of the burner head 310, and the secondary ejector tube 330 is located radially in the middle of the burner head 310. Furthermore, the distance D between the axis of the primary and secondary straight sections is 35 to 45 mm. In this embodiment, to ensure that the burner head assembly 300 meets the direct insertion requirements, the distance between the axes of the primary and secondary straight sections is limited (e.g., the diameter of a standard partition door panel), with a limit of 40 mm being used as an example.

[0079] In the case of the direct insertion type, the secondary straight tube 331 has a secondary straight channel, the secondary spiral tube 332 has a secondary spiral channel, and the angle α between the axis of the secondary straight channel and the axis of the secondary spiral channel is 20° to 30°. At this time, the angle α should not be too large or too small. If it is too large, the transition between the secondary straight channel and the secondary spiral channel will be too large, resulting in greater wind resistance and wind energy loss during the transition, which is not conducive to the airflow quickly and evenly filling the inner cavity 312. If it is too small, the inner cavity 312 from the secondary straight pipe 331 to the burner 310 needs to be coiled around a larger area. Under the dual restrictions of standardization and straight insertion, the total length of the secondary ejector pipe 330 and the distance between the main and secondary ejector pipes 330 are both limited, and the space provided for the secondary spiral pipe 332 to coil is limited. If the angle at the connection between the secondary straight pipe 331 and the secondary spiral pipe 332 is too small, the secondary spiral pipe 332 will inevitably need a larger turn during the coiling process to achieve communication with the burner 310 within the limited space. In other words, only when the angle α is within the range of 20° to 30° can the energy loss at the connection (secondary straight pipe 331 and secondary spiral pipe 332) and during the coiling process (secondary spiral pipe 332) be guaranteed to be small.

[0080] The inner fire cover 100 has an overall columnar shape, with an opening 170 defined in its center along its axial axis. This opening 170 extends throughout the entire inner fire cover 100 and accommodates the temperature sensor 510 of the temperature detection device 500. An annular internal combustion chamber 180 is defined within the inner fire cover 100, which is sheathed around the outer portion of the opening 170. An internal fire hole 113 is defined in the sidewall of the internal combustion chamber 180, connecting the internal combustion chamber 180 to the exterior of the inner fire cover 100. Specifically, the top surface of the inner fire cover 100 is provided with an opening 170 for the temperature sensor 510 to pass through; the inner fire cover 100 has an internal combustion chamber 180, and the side wall of the internal combustion chamber 180 is provided with an inner fire hole 113 that penetrates the side wall and is connected to the outside of the inner fire cover 100, and the angle β between the hole depth direction of the inner fire hole 113 and the radial direction of the opening 170 is 25°~30°.

[0081] The inner fire holes 113 are evenly arranged along the peripheral wall of the inner fire cover 100. The shape of the inner fire holes 113 is cylindrical, for example. Of course, in some embodiments, they can be conical. By setting the angle β between the depth direction of the inner fire holes 113 and the radial direction of the opening 170 to be 25° to 30°, which is much smaller than the angle between the existing inner fire holes 113 and the radial direction of the fire cover, the concentration of the inner ring flame is reduced, that is, compared with the existing fire cover, the inner ring fire spreads to the surroundings; when the temperature sensor 510 is installed in the opening 170, the inner ring fire is away from the sensor, reducing the flame's burning of the sensor, or preventing the sensor from being burned by the flame, which is beneficial to improving the working stability of the temperature sensor 510 and ensuring the accuracy of detection.

[0082] The included angle β should not be too large or too small. If it is too large, the flame ejected from the inner fire hole 113 will directly burn the temperature sensor 510, thereby reducing the service life of the temperature sensor 510. If it is too small, the flame ejected from the inner fire hole 113 will be too dispersed, which is not conducive to heating the middle part of the cookware. When the included angle β is 25° to 30°, the service life of the temperature sensor 510 can be taken into account while ensuring the heating condition of the middle part of the cookware.

[0083] To further prevent the temperature sensor 510 from being burned, the burner includes a temperature sensor 510 disposed within the opening 170. An annular gap is defined between the outer periphery of the temperature sensor 510 and the periphery of the opening 170. The width L of the annular gap is 4 to 10 mm. In some embodiments, the width L of the annular gap is 5 to 8 mm.

[0084] When there is wind or some special working conditions, the flame may flow to the top 111 of the inner fire cover 100. At this time, the flame will spread along the top 111 of the inner fire cover 100. By setting the annular gap, the annular gap can play a role in blocking the spread of the flame, thereby avoiding the flame from directly acting on the temperature sensor 510; at the same time, by setting the annular gap to 4 to 10 mm, preferably 5 to 8 mm, the heat dissipation space of the temperature sensor 510 is increased, so that the temperature sensor 510 can better dissipate heat without being affected by the inner ring flame.

[0085] It is worth mentioning that the width L should not be too large or too small. If it is too small, the heat dissipation effect of the temperature sensor 510 is poor, and the flame may burn the temperature sensor 510 under some special working conditions. In addition, when the temperature sensor 510 is set to be liftable, if the gap is too small, the temperature sensor 510 is likely to touch the side wall of the opening 170; if it is too large, the opening 170 cannot protect the temperature sensor 510 well, and the temperature sensor 510 is easily affected by external environmental factors, affecting the accuracy of temperature detection.

[0086] To further reduce the risk of flame scorching the temperature sensor 510, flame stabilization holes are provided on the sidewalls of the internal combustion chamber 180. A flame stabilization groove 114 is provided on the outer wall of the internal combustion cover 100. The flame stabilization holes are connected to the flame stabilization groove 114. The flame stabilization holes are located above the internal combustion hole 113, and the flame stabilization groove 114 is located above the internal combustion hole 113. When the internal combustion cover 100 is in operation, the stabilization flame ejects horizontally from the flame stabilization groove 114 and merges with the upward-slanting internal flame, changing the direction of the internal flame and thus reducing the risk of flame scorching the temperature sensor 510.

[0087] In some embodiments, to compensate for the flame intensity in the middle, the burner further comprises an outer flame cover 200 having a mounting hole 210 in the middle thereof, into which the inner flame hole 113 is mounted. The outer flame cover 200 comprises an outer combustion chamber 220, with outer flame holes 230 formed on the sidewalls of the outer combustion chamber 220. The angle γ between the depth of the outer flame holes 230 and the radial direction of the inner flame cover 100 is 35° to 45°. By adjusting the angle γ, the outer flame is shifted toward the middle of the inner flame cover 100, thereby compensating for the flame intensity in the middle of the burner.

[0088] The angle γ should not be too large or too small. When it is too large, the flame is too concentrated, causing the flame of the burner to gather in the middle, resulting in uneven heating of the burner, which is not conducive to cooking; when it is too small, the flame in the middle of the burner cannot be compensated, resulting in insufficient flame intensity in the middle of the burner, which is not conducive to cooking. When the angle γ is between 35° and 45°, it can ensure both the supplementation of the flame intensity in the middle and the uniformity of heating.

[0089] The outer fire cover 200 is arranged in a ring shape, and has an outer combustion cavity 220 arranged in a ring around the installation opening inside, and multiple outer fire holes 230 are evenly arranged along the outer side wall of the outer fire cover 200.

[0090] In some embodiments, to prevent the fire hole from being blocked, the fire cover comprises:

[0091] A fire cover body 110 , wherein the fire cover body 110 has a gas chamber therein, and a top 111 of the fire cover body 110 has a liquid accumulation area 112 ;

[0092] The fire cover includes a guide plate 130 , one end of which extends to the liquid accumulation area 112 , and the other end extends out of the edge of the top 111 of the fire cover body 110 to guide the liquid in the liquid accumulation area 112 out of the top 111 of the fire cover.

[0093] Specifically, in this embodiment, the fire cover, taking the inner fire cover 100 as an example, can be formed in a variety of ways, such as by having the fire cover top 111 recessed into the gas chamber, or by providing a liquid retaining wall 150 around the periphery of the fire cover top 111. A guide plate 130 has one end disposed at the fire cover top 111 and extending into the liquid retaining area 112, while the other end extends beyond the fire cover top 111. When the liquid level in the liquid retaining area 112 reaches the guide plate 130, the guide plate 130 guides the liquid from the fire cover top 111 to the exterior of the fire cover body 110.

[0094] In the technical solution of the present invention, a liquid accumulation area 112 is set on the top 111 of the fire cover, and a guide plate 130 is set at the same time, and the guide plate 130 is extended from the liquid accumulation area 112 to the outside of the fire cover. When soup and the like flow through the top 111 of the fire cover during cooking, the soup and the like first gather in the liquid accumulation area 112 of the top 111 of the fire cover, and the guide plate 130 then guides the liquid in the liquid accumulation area 112 to the outside of the fire cover body 110 (the fire hole is opened on the fire cover body 110 and connected to the gas chamber), thereby avoiding the soup from flowing along the side wall of the fire cover body 110 into the fire hole, thereby avoiding the blockage of the fire hole; in addition, through the provision of the guide plate 130, the outflow direction of the liquid is limited, avoiding the liquid from flowing out from the top 111 of the fire cover body 110 to the surroundings, so that the liquid flows out in a concentrated manner, which is conducive to the centralized treatment of the liquid.

[0095] The guide plate 130 is integrally formed with the fire cover body 110. Of course, in some embodiments, the two can also be manufactured separately and then installed. The guide plate 130 is away from one end of the liquid accumulation area 112, and the distance K from the edge of the fire cover top 111 is 3 to 4 mm. The protruding portion of the guide plate 130 should not be too long or too short. When the protruding length is too short, the liquid guided by the guide plate 130 may fall into the fire hole and block the fire hole. When the protruding length is too long, it wastes materials and is not conducive to the processing of the fire cover. At the same time, it may be guided to the outer fire cover 200 and extended out of the burner, which is not conducive to the centralized treatment of the accumulated liquid.

[0096] To ensure that the accumulated liquid is centrally guided by the guide plate 130 and does not spill, the fire cover further includes a liquid retaining wall 150 disposed along the edge of the top surface of the fire cover; a drainage port is defined on the liquid retaining wall 150, and the guide plate 130 is disposed at the drainage port, protruding from the liquid retaining wall 150. By disposing the liquid retaining wall 150 at the top 111 of the fire cover and providing the drainage port on the liquid retaining wall 150, when liquid accumulates in the liquid accumulation area 112, the accumulated liquid can only be discharged through the drainage port. Since the guide plate 130 is located precisely at the drainage port, the accumulated liquid is guided out of the top 111 of the fire cover by the guide plate 130.

[0097] The height H of the liquid retaining wall 150 is 0.8 to 1.2 mm. The height H of the liquid retaining wall 150 should not be too high or too low. If it is too high, the accumulated liquid will be difficult to drain and will be collected in the liquid retaining area 112, requiring later processing, increasing processing difficulty and wasting materials. If it is too low, the accumulated liquid will easily flow out of the liquid retaining area 112, especially under the action of external force, and will be more likely to flow over the liquid retaining wall 150.

[0098] In some embodiments, to allow the accumulated liquid in the liquid accumulation area 112 to flow more quickly and smoothly to the guide plate 130, the guide plate 130 is recessed toward the gas chamber to form a guide step 131. The distance between the guide step 131 and the top of the liquid retaining wall 150 is greater than the distance between the edge of the top of the fire cover and the top of the liquid retaining wall 150. The guide step 131 is recessed toward the interior of the gas chamber, allowing the accumulated liquid to flow more easily to the guide plate 130 under the action of gravity. When the fire cover is an inner fire cover 100, the gas chamber is an inner combustion chamber 180.

[0099] To ensure that accumulated liquid flows out of the end of the guide plate 130 away from the liquid accumulation area 112, the liquid retaining wall 150 extends along both sides of the guide plate 130 in a direction away from the liquid accumulation area 112. The liquid retaining wall 150 and the guide plate 130 together form a guide groove 140. By also providing liquid retaining walls 150 on both sides of the guide plate 130, the liquid retaining walls 150 on both sides and the guide plate 130 at the bottom together form a guide groove 140, along which accumulated liquid flows out of the liquid accumulation area 112. This arrangement prevents accumulated liquid from flowing out of the sides of the guide plate 130, fully ensuring that accumulated liquid flows out of the end of the guide plate 130, effectively preventing the fire hole from being blocked, and also facilitating the centralized treatment of accumulated liquid. The depth of the guide groove 140 is 1 to 2 mm. The depth of the guide groove 140 should not be too shallow (the accumulated liquid is likely to overflow) nor too deep (waste of materials and high processing difficulty).

[0100] In some embodiments, to improve the liquid accumulation capacity of the liquid accumulation area 112, the top of the fire cover is recessed toward the gas chamber to form the liquid accumulation area 112. There are many ways to achieve this recess, with an inverted cone being an example. The inward inclination angle δ of the top portion is preferably 8 to 12°. The inclination angle δ should be neither too large nor too small. If it is too large, the center of the liquid accumulation area 112 is too deep, hindering the drainage of the accumulated liquid and causing it to accumulate on the top of the fire cover. If it is too small, the center of the liquid accumulation area 112 is too shallow, failing to achieve the desired liquid accumulation effect.

[0101] In some embodiments, the top surface of the fire cover is provided with an opening 170 for the temperature sensor 510 to pass through, and the periphery of the opening 170 is provided with a liquid-blocking rib 160 protruding from the top surface of the fire cover. When it is necessary to set an anti-dry burning sensor on the fire cover, it is necessary to open an opening 170 in the middle of the fire cover body 110. At this time, in order to prevent the accumulated liquid from flowing out of the opening 170, it is necessary to set a liquid-blocking rib 160 around the periphery of the opening 170. The liquid-blocking rib 160 can not only block the influence of the liquid on the temperature sensor 510, but also block the influence of wind and other factors on the temperature sensor 510. Therefore, without considering the accumulation of liquid and the discharge of liquid, and only considering the detection accuracy of the temperature sensor 510, a rib can also be set around the periphery of the opening 170 to block the influence of external environmental factors on the detection of the temperature sensor 510.

[0102] In some embodiments, to allow accumulated liquid to drain further and prevent it from flowing into the inner fire hole 113, the fire cover further comprises a brim 120 extending outward from the edge of the fire cover's top. If the fire cover has a liquid retaining wall 150, the liquid retaining wall 150 is disposed on top of the brim 120. The provision of the brim 120 prevents accumulated liquid from flowing into the inner fire hole 113 disposed on the fire cover body 110, thereby improving the anti-clogging effect.

[0103] The gas distribution plate 400 has an inner gas distribution cavity 420 connected to the inner cavity 312 of the burner head 310, and an outer gas distribution cavity 410 connected to the outer cavity 311 of the burner head 310. The inner gas distribution cavity 420 is connected to the inner combustion cavity 180 of the inner fire cover 100, and the outer gas distribution cavity 410 is connected to the outer combustion cavity 220 of the outer fire cover 200. The outer gas distribution cavity 410 is sleeved on the outer side of the inner gas distribution cavity 420. A through hole 430 is provided in the middle of the gas distribution plate 400 for the temperature sensor 510 to pass through. Specifically, the gas distribution plate 400 is arranged above the burner head 310, and the inner fire cover 100 is arranged above the gas distribution plate 400; a through hole 430 is provided on the gas distribution plate 400, and the through hole 430 connects the through hole 350 and the opening 170.

[0104] The temperature detection device 500 includes a temperature sensor 510, a protective device 520, and a data cable connecting the sensor and the protective device 520. Specifically, the temperature detection device 500 includes a temperature sensor 510 and a protective device 520 connected to the temperature sensor 510; the detection end of the temperature sensor 510 passes through the through hole 350 of the burner head 310, and the protective device 520 is located below the burner head 310. The height of the main spiral tube 322 and the auxiliary spiral tube 332 is reduced, so that a portion of the protective device 520 is exposed, which facilitates heat dissipation of the protective device and the temperature detection device 500. The temperature sensor 510 passes through the through hole 430 of the gas distribution plate 400 and enters the opening 170 of the inner fire cover 100.

[0105] The present invention also proposes a gas stove, which includes a stovetop and a burner. The specific structure of the burner refers to the above-mentioned embodiment. Since this burner adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0106] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A burner head assembly, characterized in that: include: A main ejector tube, comprising a main straight tube and a main spiral tube connected to the main straight tube; A burner head, wherein the burner head has an outer cavity, and one end of the main spiral tube away from the main straight tube spirals upward and communicates with the outer cavity, the main spiral tube and the outer cavity are communicated through a main air inlet, and the opening direction of the main air inlet is arranged at an angle with the bottom surface of the outer cavity, and the angle is an acute angle; A through hole is provided on the furnace head along its thickness direction for the probe of the temperature detection device to pass through. The height of the main spiral tube is lowered to expose the protection device below the temperature detection device for heat dissipation of the protection device. An inner fire cover, wherein an opening is provided in the middle of the inner fire cover, the opening being connected to the through hole and being used for installing a temperature sensor of a temperature detection device. An annular internal combustion chamber is provided inside the inner fire cover, and an inner fire hole is provided on the side wall of the internal combustion chamber, the inner fire hole connecting the internal combustion chamber and the outside of the inner fire cover, and an angle β between a hole depth direction of the inner fire hole and a radial direction of the opening is 25° to 30°; A liquid blocking rib protrudes from the top surface of the inner fire cover, and is used to prevent interference from the external environment on the temperature sensor; The liquid-blocking rib is used to block the influence of liquid on the temperature sensor, and is used to block the influence of wind on the temperature sensor, so as to improve the detection accuracy of the temperature sensor; The inner fire cover comprises a fire cover body, wherein the fire cover body has a gas cavity, and the top of the fire cover body has a liquid accumulation area; The inner fire cover further comprises a guide plate and a liquid retaining wall. The liquid retaining wall is arranged along the edge of the top surface of the fire cover. A discharge port is provided on the liquid retaining wall. The guide plate is arranged at the discharge port.

2. The burner head assembly according to claim 1, wherein The burner head assembly comprises: A secondary ejector tube, the secondary ejector tube comprising a secondary straight tube and a secondary spiral tube connected to the secondary straight tube; The burner head has an inner cavity, which is located inside the outer cavity. One end of the auxiliary spiral tube away from the auxiliary straight tube spirals upward and communicates with the inner cavity.

3. The burner head assembly according to claim 2, wherein: The main ejector tube and the auxiliary ejector tube are respectively located on both sides of the burner in the radial direction; or, the main ejector tube is located on one side of the burner in the radial direction, and the auxiliary ejector tube is located in the middle of the burner in the radial direction.

4. The burner head assembly according to any one of claims 1 to 3, characterized in that: The outer cavity is arranged in an annular shape, and the main spiral tube spirals around the axial axis of the outer cavity.

5. The burner head assembly according to any one of claims 1 to 3, characterized in that: The main straight tube has a main straight channel, and the main spiral tube has a main spiral channel. The inner wall surface of the main straight channel is tangent to the inner wall surface of the main spiral channel.

6. A burner, characterized in that: include: A temperature detection device, comprising a temperature sensor and a protection device connected to the temperature sensor; The burner head assembly according to any one of claims 1 to 5, wherein the detection end of the temperature sensor passes through the through hole of the burner head, and the protective device is located below the burner head.

7. The burner according to claim 6, characterized in that The burner also includes a gas distribution plate, which is arranged above the burner head, and the inner fire cover is arranged above the gas distribution plate; there is an annular gap between the outer peripheral surface of the temperature sensor and the peripheral edge of the opening, and the width L of the annular gap is 4 to 10 mm.

8. The burner according to claim 7, wherein The width of the annular gap is 5 to 8 mm.

9. A gas stove, characterized in that: Comprising a burner as described in any one of claims 6 to 8.

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