A gas stove

Abstract

This invention discloses a gas stove. The technical solution of this application, on the one hand, places the temperature sensor at the center of the upper burner cap, and uses a large-diameter upper and lower burner cap. Simultaneously, the main burner hole and auxiliary burner hole on the lower burner cap are located on the side of the lower burner cap and arranged vertically, so that the main burner hole and auxiliary burner hole are as far away from the temperature sensor as possible, which can reduce the influence of the flame on the temperature sensor. On the other hand, a telescopic structure is fitted around the temperature sensor to isolate the temperature sensor from the flame. Based on the above two improvements, this application mainly solves the contradiction between burner firepower and sensor temperature measurement accuracy, addressing one aspect while ensuring the burner's own heat load, flue gas, energy efficiency, and other performance characteristics, making this burner assembly more suitable for smart stoves.

Description

Technical Field

[0001] This invention relates to the field of gas stove technology, and in particular to a gas stove. Background Technology

[0002] A gas stove is a kitchen appliance that uses gaseous fuels such as liquefied petroleum gas (liquid), manufactured gas, and natural gas for direct-fire heating.

[0003] With the improvement and upgrading of gas stove technology, gas stoves are gradually moving towards intelligent control. The main feature of intelligent gas stoves is that a temperature sensor is set on the burner core at the bottom of the pot. The temperature sensor is used to measure the temperature of the bottom of the pot and then accurately control the temperature to realize intelligent functions such as one-touch rice cooking and one-touch porridge cooking. At the same time, the intelligent sensor can also adjust the current heat level of the gas stove in real time according to the temperature of the bottom of the pot measured by the temperature sensor, so as to avoid the situation where the heat is too high and burnt, or the heat is too low and the food is not cooked.

[0004] In the current use of smart gas stoves, especially high-power (power range of 5.0kW to 5.23kW) smart gas stoves, the main burner holes and auxiliary burner holes on the burner core are usually arranged inside and outside. Due to the size limitation of the burner core, the diameter of the burner cap is small, and the inner ring flame is very close to the temperature sensor, which greatly affects the temperature measured by the temperature sensor, resulting in inaccurate temperature measurement, and thus affecting the intelligent control effect of the gas stove. Summary of the Invention

[0005] In some embodiments of this application, a gas stove is provided to solve the above-mentioned technical problems. This addresses the issue that existing gas stoves have a flame pattern with two rings of flame holes arranged inside and outside, and the inner ring flame is too close to the temperature sensor, affecting the accuracy of the sensor's temperature measurement.

[0006] In some embodiments of this application, the positions of the main flame holes and auxiliary flame holes have been improved. Multiple main flame holes and multiple auxiliary flame holes are arranged in a ring array along the circumferential direction on the outer wall of the lower burner cover, and the main flame holes are located above the auxiliary flame holes. Within the limited space of the stove core, the distance between the flame and the temperature sensor is increased to the greatest extent, and the influence of the flame on the temperature sensor is reduced.

[0007] In some embodiments of this application, the shape of the flame outlet holes on the flame cap has been improved. The lower flame cap has a main flame hole and a secondary flame hole. The main flame hole is a strip-shaped flame outlet hole formed by forging, and the secondary flame hole is a circular flame outlet hole. A flame stabilizing groove is formed on the lower flame cap at the position corresponding to the circular flame outlet hole. The upper flame cap has four fire avoidance positions in a uniform circular array, and a strip-shaped flame transmission hole is formed at the fire avoidance position. On the one hand, this avoids the phenomenon that the flame outlet area is relatively uniform and is prone to gas fluctuation. On the other hand, the forging manufacturing method makes the mold integrally formed, which improves the strength of the flame hole and also improves the production efficiency of the flame cap.

[0008] In some embodiments of this application, a retractable telescopic structure is installed on the upper burner cap, and the temperature sensor is installed inside the telescopic structure. The telescopic structure can largely isolate the flame and the temperature sensor, and protect the inner temperature sensor from the influence of the flame, improving the accuracy of the sensor's temperature measurement and making the measured temperature closer to the temperature of the bottom of the pot, which is conducive to the intelligent control of the stove. At the same time, the side wall of the telescopic structure has ventilation holes. While insulating the temperature sensor, the air entering from below the burner core will exit through the ventilation holes, thereby forming a secondary air supply to the flame. The flame burns completely, which is conducive to reducing CO in the flue gas. Furthermore, when the flame is extinguished, the heat inside the telescopic structure can be dissipated through the ventilation holes, which is conducive to cooling and ensuring the flue gas performance and internal heat dissipation of the burner.

[0009] In some embodiments of this application, a gas stove is disclosed, including a burner, a flame distributor, a main injector, and a secondary injector.

[0010] The burner is installed on the burner core. The main ejector tube and the auxiliary ejector tube are connected to the burner core, and the burner core is covered by the burner core, which seals the main ejector tube and the auxiliary ejector tube. Support parts for supporting cookware are provided at intervals around the burner core.

[0011] The cooktop core includes a lower burner cap, an upper burner cap covering the lower burner cap, a temperature sensor, and a telescopic structure.

[0012] The outer wall of the lower flame cap has multiple main flame holes and multiple secondary flame holes arranged in a ring along the circumferential direction, with the main flame holes located above the secondary flame holes. The upper flame cap has a mounting through hole at its center, and the temperature sensor is located inside the mounting through hole and fixedly connected to the upper flame cap. The telescopic structure is fixed at the mounting through hole and is sleeved around the temperature sensor to isolate the temperature sensor from the flame.

[0013] In some embodiments of this application, the upper and lower burner caps are circular, and the diameters of the upper and lower burner caps range from 88 to 93 mm.

[0014] The temperature sensor is located in the middle of the upper burner cap, while the main and secondary flame outlets are located on the side wall of the lower burner cap. The flame outlets are far from the temperature sensor, which can reduce the influence of the flame on the temperature sensor.

[0015] In some embodiments of this application, the main flame hole is a forged strip-shaped flame outlet, the secondary flame hole is a circular flame outlet, and a flame stabilizing groove is provided on the lower flame cover at a position corresponding to the circular flame outlet.

[0016] The lower fire cover is arranged in a uniform ring with four fire-avoiding positions, and each fire-avoiding position has a corresponding strip-shaped fire transmission hole.

[0017] The design of the main and secondary flame holes aims to: on the one hand, avoid a relatively uniform flame area, which can easily lead to gas fluctuations; on the other hand, the forging process allows the mold to be formed as a single piece, which improves the strength of the flame holes and also increases the production efficiency of the lower flame cap.

[0018] In some embodiments of this application, the upper and lower burner caps are respectively provided with connecting holes and slots inside, and the positions of the connecting holes and slots are corresponding. The upper and lower burner caps are connected and fixed by passing a paperclip through the connecting holes and slots in sequence.

[0019] The connection between the upper and lower burner caps is simple, making disassembly and maintenance convenient, and also improving installation efficiency during the production of the stove core.

[0020] In some embodiments of this application, the telescopic structure includes a base and a movable element.

[0021] The base is fixed on the upper cover, and a protrusion is formed on the base. The protrusion extends into the mounting through hole. The movable part is installed on the base and can move relative to the base in its axial direction. A spring is provided between the movable part and the base.

[0022] When the cookware is placed on the support, the bottom of the cookware contacts the top of the moving part, causing the moving part to shift towards the base, and the spring is compressed.

[0023] In some embodiments of this application, the movable part is provided with a plurality of vent holes, which are used to connect the internal space of the mounting through hole with the outside air, and a hemispherical protrusion structure is arranged on the contact surface between the telescopic structure and the upper fire cover.

[0024] The design of this application places the temperature sensor on the burner cap and provides a telescopic structure around the temperature sensor to prevent flame interference. This protects the inner temperature sensor from the flame, improves the accuracy of temperature measurement, and facilitates the intelligent control of the stove.

[0025] In some embodiments of this application, the main ejector tube is connected to one side of the fire distributor, and the auxiliary ejector tube is connected to the middle of the fire distributor.

[0026] The main ejector and auxiliary ejector are configured as Venturi tubes with straight sections.

[0027] The design scheme of this application places the auxiliary ejector tube in the middle of the burner, with its tail facing the flame distributor, to reduce airflow resistance. At the same time, the main ejector tube is placed on one side of the burner, which is conducive to the injection of primary air, so that the gas can be burned more completely during combustion, reducing exhaust emissions and improving gas combustion efficiency. The main ejector tube and the auxiliary ejector tube are set as Venturi tubes with straight pipe sections to ensure the stability of the flow velocity and the stability of the entire gas mixture when the gas and air are mixed. The gas and air are mixed evenly, with a small energy loss coefficient, which is conducive to improving flame shape and performance.

[0028] In some embodiments of this application, the main ejector tube is divided into a main mixing section and a main mixing chamber in sequence along the gas flow direction, and the auxiliary ejector tube is divided into a secondary mixing section and a secondary mixing chamber in sequence along the gas flow direction. The main mixing and auxiliary ejector tubes are connected to the ignition distributor through the main mixing chamber and the secondary mixing chamber, respectively. The main mixing section and the secondary mixing section are configured as straight-tube venturi tubes.

[0029] In some embodiments of this application, the support portion includes an upper energy-concentrating ring, a lower energy-concentrating ring, and a support claw.

[0030] The support claws are evenly distributed around the stove core to directly contact and support the cookware. The inner side of the support claws has an arc-shaped chamfer. The outer sides of the upper and lower energy-concentrating rings are connected and closed, while the inner side of the lower energy-concentrating ring and the lower energy-concentrating ring are open structures.

[0031] The inner edge of the lower energy-concentrating ring bends upward to form an arc-shaped guiding surface.

[0032] The beneficial effects of this invention are as follows:

[0033] 1) Multiple main flame holes and multiple auxiliary flame holes are arranged in a ring along the circumferential direction on the outer wall of the lower burner cover, and the main flame holes are located above the auxiliary flame holes. Within the limited space of the stove core, this maximizes the distance between the flame and the temperature sensor and reduces the influence of the flame on the temperature sensor.

[0034] 2) The flame outlets of the upper and lower flame caps have been redesigned to avoid the phenomenon of gas fluctuation caused by a relatively uniform flame area. On the other hand, the forging manufacturing method allows the mold to be formed in one piece, which improves the strength of the flame outlets and also improves the production efficiency of the flame caps.

[0035] 3) The temperature sensor is placed on the burner cap, and a telescopic structure to prevent flame interference is set around the temperature sensor. This can protect the inner temperature sensor from the influence of the flame, improve the accuracy of the sensor's temperature measurement, and facilitate the intelligent control of the stove. Attached Figure Description

[0036] Figure 1 These are structural diagrams of a gas stove in some embodiments of the present invention;

[0037] Figure 2 This is a connection structure diagram of the gas stove flame outlet part in some embodiments of the present invention;

[0038] Figure 3 These are exploded views of the flame-out section of the gas stove in some embodiments of the present invention;

[0039] Figure 4 This is a connection structure diagram of the main ejector tube, auxiliary ejector tube, and fire distributor in some embodiments of the present invention;

[0040] Figure 5 These are cross-sectional views of the internal shapes of the main ejector tube and the auxiliary ejector tube in some embodiments of the present invention;

[0041] Figure 6 These are internal structural diagrams of the Venturi tube in some embodiments of the present invention;

[0042] Figure 7 These are schematic diagrams of the upper and lower burner caps in some embodiments of the present invention;

[0043] Figure 8 This is a schematic diagram of the connection structure between the upper and lower burner caps in some embodiments of the present invention;

[0044] Figure 9 This is one of the schematic diagrams showing the shape of the telescopic structure in some embodiments of the present invention;

[0045] Figure 10 This is one of the schematic diagrams showing the shape of the telescopic structure in some embodiments of the present invention;

[0046] Figure 11 This is a schematic diagram of the support portion in some embodiments of the present invention.

[0047] Figure label:

[0048] Includes: 100, Gas stove; 101, Stove panel; 110, Stove core; 111, Upper burner cap; 1111, Mounting through hole; 1112, Connection hole; 112, Lower burner cap; 1121, Main burner hole; 1122, Secondary burner hole; 1123, Flame stabilizer groove; 1124, Slot; 1125, Fire-avoiding position; 1126, Strip-shaped flame transmission hole; 120, Flame distributor; 130, Main injector tube; 131, Main mixing pipe section; 132. Main mixing chamber; 140. Secondary ejector tube; 141. Secondary mixing tube section; 142. Secondary mixing chamber; 150. Support part; 151. Upper energy focusing ring; 152. Lower energy focusing ring; 153. Support claw; 160. Telescopic structure; 161. Base; 1611. Protrusion; 1612. Raised structure; 162. Moving part; 1621. Vent hole; 163. Spring; 170. Temperature sensor. Detailed Implementation

[0049] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0050] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., 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 this application and simplifying the description, and do not indicate or imply that the device or element 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 this application.

[0051] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0052] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0053] A gas stove is a kitchen appliance that uses gaseous fuels such as liquefied petroleum gas (liquid), manufactured gas, and natural gas for direct-fire heating.

[0054] Gas stoves currently on the market typically include:

[0055] The cooktop panel, the burner core mounted on the cooktop panel, the burner distributor for mounting the burner core, the injector tube connected to the burner distributor, and the support parts for supporting cookware spaced around the burner core.

[0056] During operation, gas enters the burner core through the injector tube. At the same time, the injector tube mixes air and gas and introduces it into the burner to make the speed and pressure of the mixed gas as uniform as possible. The mixed gas is then ejected and burned at the burner core to form a flame.

[0057] The cookware is placed on the support, and the flame generated by the combustion at the burner core contacts the bottom of the cookware to heat it for cooking.

[0058] This invention redesigns the ejector structure of existing gas stoves to solve combustion defects such as low ejector efficiency, low gas combustion efficiency, and high flue gas emissions.

[0059] like Figure 1 As shown in Figure 6, in some embodiments of this application, the gas stove 100 includes: a stove panel 101, a stove core 110 disposed on the stove panel 101, a burner 120 for mounting the stove core 110, a main injector 130 and a secondary injector 140 connected to the burner 120, and a support portion 150 for supporting cookware disposed at intervals around the stove core 110.

[0060] The stove core 110 includes a lower burner cover 112, an upper burner cover 111 covering the lower burner cover 112, a temperature sensor 170, and a telescopic structure 160.

[0061] The outer side wall of the lower flame cover 112 is provided with a plurality of main flame holes 1121 and a plurality of secondary flame holes 1122 arranged in a ring along the circumferential direction, and the main flame holes 1121 are located above the secondary flame holes 1122. The upper flame cover 111 is provided with a mounting through hole 1111 at the center.

[0062] Temperature sensor 170 is disposed inside mounting through hole 1111 and is fixedly connected to upper cover 111.

[0063] The telescopic structure 160 is fixed at the mounting through hole 1111 and is sleeved around the temperature sensor 170 to isolate the temperature sensor 170 from the flame.

[0064] It should be noted that multiple main flame holes 1121 and multiple auxiliary flame holes 1122 are arranged in a ring along the circumferential direction on the outer wall of the lower burner cover 112, and the main flame holes 1121 are located above the auxiliary flame holes 1122. Within the limited space of the stove core 110, the distance between the flame and the temperature sensor 170 is increased to the greatest extent, reducing the influence of the flame on the temperature sensor 170.

[0065] It should also be noted that the design of this application places the temperature sensor 170 on the upper burner cover 111, and provides a telescopic structure 160 to prevent flame interference around the temperature sensor 170, which can protect the inner temperature sensor 170 from the influence of flame, improve the accuracy of temperature measurement by the sensor, and facilitate the intelligent control of the stove.

[0066] In the prior art, the burner core 110 of the gas stove 100 has a flame outlet configuration with two rings of flame holes arranged inside and outside. The inner ring flame is relatively close to the temperature sensor 170, which affects the accuracy of the sensor's temperature measurement. The technical solution of this application makes changes in two aspects to address the above problems. First, the main flame outlet and the auxiliary flame outlet are rearranged from the existing inner and outer ring arrangement to an upper and lower arrangement. This increases the distance between the temperature sensor 170 and the flame outlet position within the limited space of the burner core 110, which can reduce the influence of the flame on the temperature sensor 170. On the other hand, the telescopic structure 160 is set outside the temperature sensor 170 to prevent flame interference. This can largely isolate the flame from the temperature sensor 170, reduce the influence of the flame on the temperature sensor 170, and make the measured temperature closer to the temperature of the pot bottom.

[0067] This case mainly addresses the contradiction between burner firepower and sensor temperature measurement accuracy, taking a two-pronged approach while ensuring the performance of the cooktop core 110 itself in terms of heat load, flue gas, and energy efficiency, making the gas stove 100 more suitable for intelligent control.

[0068] Based on the above embodiments, such as Figure 1 As shown in Figure 6, the upper burner cap 111 and the lower burner cap 112 are circular, and the diameter of the upper burner cap 111 and the lower burner cap 112 ranges from 88 to 93 mm.

[0069] It should be noted that the temperature sensor 170 is located in the middle of the upper flame cap 111, while the main flame outlet and the auxiliary flame outlet are located on the side wall of the lower flame cap 112. The flame outlet positions are far away from the temperature sensor 170, which can reduce the influence of the flame on the temperature sensor 170.

[0070] In other embodiments of this application, the main flame hole 1121 is a forged strip-shaped flame hole, the secondary flame hole 1122 is a circular flame hole, and a flame stabilizing groove 1123 is provided on the lower flame cover 112 at a position corresponding to the circular flame hole.

[0071] In addition, the lower fire cover 112 is arranged in a uniform annular array to form four fire-avoiding positions 1125, and each fire-avoiding position 1125 is provided with a strip-shaped fire transmission hole 1126.

[0072] It should be noted that the design of the main flame hole 1121 and the secondary flame hole is intended to: on the one hand, avoid the phenomenon of relatively uniform flame area, which is prone to gas fluctuation; on the other hand, the forging manufacturing method allows the mold to be formed in one piece, which improves the strength of the flame hole and also improves the production efficiency of the lower flame cover 112.

[0073] In some embodiments of this application, the upper flame cap 111 and the lower flame cap 112 are respectively provided with a connecting hole 1112 and a slot 1124 inside, and the connecting hole 1112 and the slot 1124 are in corresponding positions. The upper flame cap 111 and the lower flame cap 112 are connected and fixed by passing a paperclip through the connecting hole 1112 and the slot 1124 in sequence.

[0074] like Figure 8 As shown, the upper burner cap 111 and the lower burner cap 112 are respectively provided with a connecting hole 1112 and a slot 1124 inside, and the connecting hole 1112 and the slot 1124 are in corresponding positions. The upper burner cap 111 and the lower burner cap 112 are connected and fixed by passing a paperclip through the connecting hole 1112 and the slot 1124 in sequence.

[0075] It should be noted that the connection between the upper burner cap 111 and the lower burner cap 112 is simple and reliable, and easy to disassemble and repair. In addition, the assembly of the upper burner cap 111 and the lower burner cap 112 is convenient during the production of the gas stove 100, which improves production efficiency.

[0076] In some embodiments of this application, the telescopic structure 160 includes a base 161 and a movable element 162.

[0077] The base 161 is fixed on the upper cover 111. A protrusion 1611 is formed on the base 161, which extends into the mounting through hole 1111. The movable member 162 is mounted on the base 161 and can move relative to the base 161 in its axial direction. A spring 163 is provided between the movable member 162 and the base 161.

[0078] When the cookware is placed on the support 150, the bottom of the cookware contacts the top of the movable part 162, causing the movable part 162 to move towards the base 161, and the spring 163 is compressed.

[0079] In one specific embodiment of this application, such as Figure 3 , Figure 9 and Figure 7 As shown, the upper cover 111 has a mounting through hole 1111 with internal threads at its center.

[0080] A protrusion 1611 is formed on the base 161, and an external thread is provided on the outer surface of the protrusion 1611. The protrusion 1611 extends into the mounting through hole 1111, and the external thread engages with the internal thread of the mounting through hole 1111 to fix the base 161 on the upper fire cover 111.

[0081] It should be noted that the telescopic structure 160 is connected and fixed to the upper fire cover 111 by a threaded connection, which facilitates the disassembly and installation of the telescopic structure 160. Users can replace the telescopic structure 160 independently, saving the maintenance cost of the telescopic structure 160.

[0082] It should also be noted that, in one specific embodiment of this application, such as Figure 9 As shown in Figure 10, the base 161 forms a columnar heat-insulating space, and the base 161 includes a circular bottom surface and a side wall connected to the bottom surface, the side wall being configured to be perpendicular to the bottom surface.

[0083] The sidewall forms a heat-insulating space, and the movable member 162 is movably disposed within the heat-insulating space. It can move relative to the base 161 by means of the spring 163, and the movable member 162 can close the heat-insulating space.

[0084] The telescopic structure 160 is fixedly connected to the upper fire cover 111, and the heat insulation space can be regarded as the space formed by the installation through hole 1111 extending upward therefrom.

[0085] The telescopic structure 160 is used in such a way that when the cookware is placed on the support 150, the bottom surface of the cookware contacts the top of the moving part 162, thus sealing the heat insulation space.

[0086] The cookware presses the movable part 162 downward into the base 161, while the spring 163 at the bottom of the movable part 162 is compressed, making the contact between the bottom of the cookware and the movable part 162 more secure.

[0087] When the gas stove 100 is turned on, the burner core 110 emits flames from the burner holes to heat the cookware.

[0088] During the use of the aforementioned telescopic structure 160, the temperature sensor 170 is placed in the heat-insulating space, while the moving part 162 and the base 161 completely separate the temperature sensor 170 from the flame emitted by the stove core 110.

[0089] It should be noted that the design of the telescopic structure 160 can, on the one hand, reduce the impact of the flame on the temperature sensor 170, improve the accuracy of the sensor's temperature measurement, and facilitate the intelligent control of the stove. On the other hand, the design of the telescopic movable part 162 can better adapt to different pot types, without affecting the stable placement of the pot or the flame isolation effect.

[0090] In some embodiments of this application, such as Figure 9 As shown in Figure 10, the movable part 162 is provided with a plurality of vent holes 1621, which are used to connect the internal space of the mounting through hole 1111 with the external air. The contact surface between the telescopic structure 160 and the upper flame cover 111 is provided with a hemispherical protrusion structure 1612.

[0091] It should be noted that the purpose of the vent 1621 is to allow air entering from below the burner head section, which consists of the injector tube, the flame distributor 120, and the burner core 110, to exit through the vent 1621, thereby providing secondary air supply to the flame, ensuring complete combustion, and helping to reduce CO in the flue gas.

[0092] Furthermore, once the flame is extinguished, the heat inside the retractable structure 160 can dissipate through the small holes, which helps to cool it down.

[0093] It should also be noted that the hemispherical protrusion 1612 at the bottom of the telescopic structure 160 and the upper burner cap 111 are in point contact, which reduces the heat exchange area between the telescopic structure 160 and the upper burner cap 111, thereby reducing the heat transfer from the upper burner cap 111 to the telescopic structure 160, thus preventing the reduction of burner efficiency.

[0094] In some embodiments of this application, such as Figure 1 As shown in Figure 6, in order to adapt to the intelligent gas stove 100 with high firepower (power range of 5.0kW to 5.23kW), this application has improved the injection path of the main injection tube 130 and the auxiliary injection tube 140.

[0095] The main ejector tube 130 and the auxiliary ejector tube 140 are respectively connected to the fire distributor 120.

[0096] The burner core 110 is covered by the flame distributor 120, and the main ejector tube 130 and the auxiliary ejector tube 140 are sealed.

[0097] The main ejector tube 130 is connected to one side of the fire distributor 120, and the auxiliary ejector tube 140 is connected to the middle of the fire distributor 120.

[0098] The main ejector tube 130 and the auxiliary ejector tube 140 are configured as Venturi tubes with straight pipe sections.

[0099] It should be noted that, based on the aforementioned improvements to the ejection paths of the main ejector tube 130 and the auxiliary ejector tube 140, the use of the upper burner cap 111 and the lower burner cap 112 in conjunction with the venturi tube ensures the stability of the flow velocity and the overall stability of the gas mixture during combustion. This results in uniform gas-air mixing, a low energy loss coefficient, and improved flame morphology and performance. Furthermore, the design of the main ejector tube 130 and the auxiliary ejector tube 140 facilitates the ejection of primary air, meeting the air requirements under high heat load combustion conditions.

[0100] Meanwhile, the auxiliary ejector tube 140 is positioned in the middle of the burner, with its tail facing the flame distributor 120, to reduce airflow resistance. The main ejector tube 130 is positioned on one side of the burner, which facilitates the injection of primary air, allowing the gas to burn more completely during combustion, reducing exhaust emissions, and improving gas combustion efficiency.

[0101] Based on the above improvements, in some embodiments of this application, the main ejector tube 130 is divided into a main mixing section 131 and a main mixing chamber 132 in sequence along the gas flow direction, and the auxiliary ejector tube 140 is divided into a secondary mixing section 141 and a secondary mixing chamber 142 in sequence along the gas flow direction.

[0102] The main mixing tube and the auxiliary ejector tube 140 are connected to the fire distributor 120 through the main mixing chamber 132 and the auxiliary mixing chamber 142, respectively. The main mixing tube section 131 and the auxiliary mixing tube section 141 are configured as venturi tubes.

[0103] In some embodiments of this application, such as Figure 1 , Figure 2 , Figure 3 and Figure 11 As shown, the support portion 150 includes an upper energy-concentrating ring 151, a lower energy-concentrating ring 152, and a support claw 153.

[0104] Support claws 153 are evenly distributed around the stove core 110 to directly contact and support the cookware. The inner side of the support claws 153 has an arc-shaped chamfer. The outer sides of the upper energy-concentrating ring 151 and the lower energy-concentrating ring 152 are connected and closed. The inner side of the lower energy-concentrating ring 152 is an open structure. The inner edge of the lower energy-concentrating ring 152 is bent upward to form an arc-shaped guide surface.

[0105] It should be noted that the support claw 153 of the support part 150 adopts an arc-shaped chamfer design, which is more aesthetically pleasing and avoids stress concentration, thereby improving the strength of the support claw.

[0106] It should also be noted that the upper energy-concentrating ring 151 and the lower energy-concentrating ring 152 adopt a double-layer open design, which effectively reduces the thermal conductivity, reduces heat loss, and improves energy efficiency.

[0107] Meanwhile, the inner edge of the lower energy-concentrating ring 152 curves upward, forming a horizontal Venturi-like design. This can increase the intake of secondary air below the burner head section, which consists of the injector, flame distributor 120, and burner core 110. It can also reduce the flow velocity of secondary air at the inner curved position, which is beneficial for the contact between secondary air and flame, ensuring complete combustion.

[0108] This invention discloses a gas stove 100. The technical solution of this application, on the one hand, places the temperature sensor 170 at the center of the upper burner cap 111, and uses a large-diameter upper burner cap 111 and lower burner cap 112. Simultaneously, the main burner hole 1121 and auxiliary burner hole 1122 on the lower burner cap 112 are arranged vertically on the side of the lower burner cap 112, so that the main burner hole 1121 and auxiliary burner hole 1122 are as far away from the temperature sensor 170 as possible, reducing the influence of the flame on the temperature sensor 170. On the other hand, a telescopic structure 160 is fitted around the temperature sensor 170, isolating the temperature sensor 170 from the flame. Based on the above two improvements, this application mainly solves the contradiction between burner firepower and sensor temperature measurement accuracy, addressing one aspect while ensuring the burner's own heat load, flue gas, energy efficiency, and other performance characteristics, making this burner assembly more suitable for intelligent stoves.

[0109] The beneficial effects of this invention are as follows:

[0110] 1) Multiple main flame holes and multiple auxiliary flame holes are arranged in a ring along the circumferential direction on the outer wall of the lower burner cover, and the main flame holes are located above the auxiliary flame holes. Within the limited space of the stove core, this maximizes the distance between the flame and the temperature sensor and reduces the influence of the flame on the temperature sensor.

[0111] 2) The flame outlets of the upper and lower flame caps have been redesigned to avoid the phenomenon of gas fluctuation caused by a relatively uniform flame area. On the other hand, the forging manufacturing method allows the mold to be formed in one piece, which improves the strength of the flame outlets and also improves the production efficiency of the flame caps.

[0112] 3) The temperature sensor is placed on the burner cap, and a telescopic structure to prevent flame interference is set around the temperature sensor. This can protect the inner temperature sensor from the influence of the flame, improve the accuracy of the sensor's temperature measurement, and facilitate the intelligent control of the stove.

[0113] The first concept of this application is to improve the location of the main flame hole and the auxiliary flame hole. Multiple main flame holes and multiple auxiliary flame holes are arranged in a ring along the circumferential direction on the outer wall of the lower burner cover, and the main flame holes are located above the auxiliary flame holes. Within the limited space of the stove core, this maximizes the distance between the flame and the temperature sensor and reduces the influence of the flame on the temperature sensor.

[0114] The second concept of this application involves installing a retractable telescopic structure on the burner cap, with the temperature sensor housed inside the telescopic structure. This structure largely isolates the flame from the temperature sensor, protecting it from flame interference and improving the accuracy of temperature measurement. This allows the sensor to measure temperatures closer to the bottom of the pot, facilitating intelligent control of the stove. Simultaneously, the telescopic structure has ventilation holes on its sidewalls. While insulating the temperature sensor, air entering from below the burner core exits through these holes, providing secondary air replenishment to the flame. This ensures complete combustion, reducing CO in the flue gas. Furthermore, after the flame extinguishes, heat from inside the telescopic structure dissipates through the ventilation holes, promoting cooling and ensuring burner flue gas performance and internal heat dissipation.

[0115] The third concept of this application improves the shape of the flame outlet on the flame cap. The lower flame cap has a main flame outlet and a secondary flame outlet. The main flame outlet is a strip-shaped flame outlet formed by forging, and the secondary flame outlet is a circular flame outlet. A flame stabilizing groove is formed on the lower flame cap in a corresponding position to the circular flame outlet. The upper flame cap has four fire-avoiding positions in a uniform circular array, and a strip-shaped flame transmission hole is formed on each fire-avoiding position. On the one hand, this avoids the phenomenon of a relatively uniform flame outlet area, which is prone to gas fluctuation. On the other hand, the forging manufacturing method allows the mold to be formed in one piece, which improves the strength of the flame outlet and also improves the production efficiency of the flame cap.

[0116] It will be understood by those skilled in the art that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A gas stove, the gas stove comprising a burner core; Flame distributor, the flame distributor is installed in the stove core; The main ejector tube and the auxiliary ejector tube are connected to the flame distributor, and the burner core cover is closed to the flame distributor, thereby sealing the main ejector tube and the auxiliary ejector tube; Support parts for supporting cookware are provided at intervals around the stove core; Its features are, The cooktop core includes: The lower flame cover and the upper flame cover are disposed on the lower flame cover. The outer side wall of the lower flame cover is provided with a plurality of main flame holes and a plurality of secondary flame holes arranged in a ring array along the circumferential direction, and the main flame holes are disposed above the secondary flame holes. An installation through hole is provided at the center of the upper fire cover; A temperature sensor is disposed inside the mounting through hole and is fixedly connected to the upper flame cap; A telescopic structure is fixed at the mounting through hole and sleeved around the temperature sensor to isolate the temperature sensor from the flame. The main ejector tube is connected to one side of the fire distributor, and the auxiliary ejector tube is connected to the middle of the fire distributor; The main ejector tube and the auxiliary ejector tube are configured as Venturi tubes with straight sections; The main ejector tube is divided into a main mixing pipe section and a main mixing chamber in sequence along the gas flow direction; The auxiliary ejector tube is divided into an auxiliary mixing section and an auxiliary mixing cavity in sequence along the gas flow direction; The main mixing chamber and the auxiliary ejector tube are respectively connected to the ignition distributor through the main mixing chamber and the auxiliary mixing chamber; The main mixing pipe section and the secondary mixing pipe section are configured as straight-pipe Venturi tubes; The support portion includes an upper energy-concentrating ring, a lower energy-concentrating ring, and a support claw; The support claws are evenly distributed around the stove core, used to directly contact and support the cookware, and the inner side of the support claws has an arc-shaped chamfer. The outer sides of the upper and lower energy-concentrating rings are connected and closed, and the inner sides of both the upper and lower energy-concentrating rings are open structures. The inner edge of the lower energy-concentrating ring bends upward to form an arc-shaped guiding surface; The upper and lower burner caps are respectively provided with connecting holes and slots inside, and the positions of the connecting holes and slots are corresponding. The upper and lower burner caps are connected and fixed by passing a paperclip through the connecting holes and slots in sequence. The telescopic structure includes: A base, which is fixed to the upper fire cover; The base has a protrusion that extends into the mounting through hole; A movable component, which is mounted on the base and is movable relative to the base along its axial direction; A spring is provided between the movable component and the base; When the cookware is placed on the support, the bottom of the cookware contacts the top of the movable part, causing the movable part to move towards the base, and the spring is compressed. The movable component is provided with a plurality of vent holes, which are used to connect the internal space of the mounting through hole with the external air. The contact surface between the telescopic structure and the upper fire cover is provided with a hemispherical protrusion.

2. The gas stove as described in claim 1, characterized in that, The upper and lower burner caps are circular, and their diameters range from 88 to 93 mm.

3. The gas stove as described in claim 2, characterized in that, The main fire hole is a forged strip-shaped fire outlet, and the secondary fire hole is a circular fire outlet; A flame stabilizing groove is provided on the lower flame cap at a position corresponding to the circular flame outlet.

4. The gas stove as described in claim 2, characterized in that, The lower fire cover is arranged in a uniform ring array to form four fire-avoiding positions, and each fire-avoiding position is provided with a strip-shaped fire transmission hole.

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