A gas stove

Abstract

The present invention discloses a gas stove, which includes a burner and a plurality of gas valves. The burner includes a gas distribution plate, and the gas distribution plate includes an upper cover and a lower cover. The upper part of the upper cover is formed with an inner ring upper channel and a plurality of outer ring upper channels which surround in sequence. The outer ring upper channel has an inner ring channel and an outer ring channel. The lower part of the lower cover is formed with an inner ring lower channel and a plurality of outer ring lower channels which surround in sequence. The inner ring lower channel is connected to the inner ring upper channel. The plurality of gas valves are used to control the gas flow of the inner ring lower channel and the plurality of outer ring lower channels, and at least two outer ring lower channels are controlled by different gas valves. An air distribution cavity is formed between the upper cover and the lower cover. The inner ring channel and the outer ring channel in the same outer ring upper channel are connected to different outer ring lower channels respectively through the air distribution cavity. The outer ring lower channel is connected to at least two outer ring upper channels through the air distribution cavity. The gas stove of the present invention is used to solve the technical problem that the existing gas stove cannot adapt to the variable heating area and needs uniform heating.

Description

Technical Field

[0001] The invention relates to the field of kitchen appliances, and in particular to a gas stove. Background Art

[0002] At present, gas stoves have been widely used by people to cook food. The burner used in the existing gas stove can be provided with multiple fire covers as needed, so as to form a multi-ring fire by using the multiple fire covers.

[0003] However, no matter how many fire covers the burner has, the multi-ring fire formed is controlled by the same gas valve to control the flow rate. The multi-ring fire can only adjust the firepower at the same time. When cooking food, although the entire bottom of the pot can be heated evenly, the heating area is single and cannot adapt to the changing heating area. The mismatch of the heating area will cause uneven heating of the food, thus affecting the cooking quality. Summary of the invention

[0004] The object of the present invention is to provide a gas stove to solve the technical problem that the existing gas stoves cannot adapt to the variable heating area and require uniform heating.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A gas stove comprises a burner and a plurality of gas valves.

[0007] The burner comprises a gas distribution plate,

[0008] The gas distribution plate comprises:

[0009] An upper cover, wherein an inner ring upper channel and a plurality of outer ring upper channels surrounding the inner ring upper channel are formed on the upper portion of the upper cover, wherein the outer ring upper channel has an inner ring channel and an outer ring channel;

[0010] A lower cover, wherein the lower part of the lower cover is formed with an inner ring lower channel and a plurality of outer ring lower channels surrounding the inner ring lower channel, the inner ring lower channel is connected to the inner ring upper channel, the plurality of gas valves are used to control the gas flow of the inner ring lower channel and the plurality of outer ring lower channels, and at least two of the plurality of outer ring lower channels are controlled by different gas valves;

[0011] An air dividing cavity is formed between the upper cover and the lower cover. The inner ring channel and the outer ring channel in the same outer ring upper channel are connected to different outer ring lower channels through different air dividing cavities respectively. The outer ring lower channel is connected to at least two outer ring upper channels through different air dividing cavities.

[0012] Further, the upper part of the upper cover is formed with two outer ring upper channels, the lower part of the lower cover is formed with two outer ring lower channels, and the air dividing cavity includes:

[0013] A first air dividing cavity, wherein the inner ring channel of the two outer ring upper channels is connected to one of the outer ring lower channels through the first air dividing cavity,

[0014] A second air dividing cavity, wherein the outer ring channel of the two outer ring upper channels is connected to the other outer ring lower channel through the second air dividing cavity.

[0015] Furthermore, the burner comprises:

[0016] An inner fire cover, wherein the inner fire cover is formed with an inner ring fire hole, and the inner ring fire hole is connected to the inner ring upper channel;

[0017] A middle fire cover, wherein the middle fire cover is formed with a middle ring inner fire hole and a middle ring outer fire hole, wherein the middle ring inner fire hole and the middle ring outer fire hole are respectively connected to the inner ring channel and the outer ring channel in one of the outer ring upper channels;

[0018] The outer fire cover is formed with an outer ring inner fire hole and an outer ring outer fire hole, and the outer ring inner fire hole and the outer ring outer fire hole are respectively connected to the inner ring channel and the outer ring channel in another outer ring upper channel.

[0019] Furthermore, the burner comprises:

[0020] A first ignition needle is formed between the middle fire cover and the outer fire cover;

[0021] a second ignition needle formed between the middle fire cover and the outer fire cover;

[0022] A first thermocouple is formed between the inner fire cover and the middle fire cover;

[0023] The second thermocouple is formed between the middle fire cover and the outer fire cover.

[0024] Furthermore, a plurality of circumferentially distributed air dividing covers are formed on the upper portion of the lower cover, the first air dividing cavity and the second air dividing cavity are formed between the air dividing cover and the upper cover, the air dividing cover is formed with a lower dividing rib and / or the lower portion of the upper cover is formed with an upper dividing rib, and the lower dividing rib and / or the upper dividing rib separate the first air dividing cavity and the second air dividing cavity.

[0025] Furthermore, the gas distribution cover comprises:

[0026] The gas-dividing cover bottom extends from the inside to the outside;

[0027] A first gas separation cover side wall, formed on one side of the gas separation cover bottom;

[0028] The second air dividing cover side wall is formed on the other side of the air dividing cover bottom, and the circumferential distance between the first air dividing cover side wall and the second air dividing cover side wall gradually increases from the inside to the outside.

[0029] Furthermore, a first outward expansion section is formed at the outer end of the side wall of the second air dividing cover, the first outward expansion section expands outward in a direction away from the side wall of the first air dividing cover, and the lower dividing rib extends to the first outward expansion section.

[0030] Furthermore, the lower dividing rib comprises:

[0031] The first straight line segment extends from the inside to the outside;

[0032] A first inner arc segment circumferentially extends from the first straight line segment to the first air distribution cover side wall;

[0033] The first outer arc segment circumferentially extends from the first straight line segment to the side wall of the second air distribution cover.

[0034] Furthermore, the upper cover is formed with an air supplement channel, and the air supplement channel is located between the inner ring upper channel and the outer ring upper channel and / or between any two of the outer ring upper channels.

[0035] Furthermore, one of the gas valves has two gas outlets, and the two gas outlets are respectively connected to the inner ring lower channel and one of the outer ring lower channel.

[0036] Compared with the prior art, the advantages and beneficial effects of the present invention are:

[0037] In the gas stove of the present invention, the inner ring upper channel and the multiple outer ring upper channels formed by the upper cover of the gas distribution plate can be used to form a multi-ring fire that surrounds in sequence, so that a sufficient heating area can be achieved when cooking food. Under the premise of ensuring that the heating area is sufficient, multiple gas valves are used to control the gas flow of the inner ring lower channel and the multiple outer ring lower channels, and at least two outer ring lower channels are controlled by different gas valves. Multiple gas valves can be used to combine multiple gas outlet modes, thereby forming multiple different heating areas. Therefore, it can effectively adapt to cooking scenarios with variable heating areas.

[0038] While increasing the diversity of changes in the heating area, in order to ensure the uniformity of heating, each outer ring upper channel in the present invention has two air outlet rings: an inner ring channel and an outer ring channel. The two air outlet rings in the same outer ring upper channel are supplied with air by different outer ring lower channels, and each outer ring lower channel is connected to at least two outer ring upper channels. Therefore, at least two air outlet rings supplied with air by the same outer ring lower channel can form at least two rings of fire with a certain spacing and synchronously adjustable firepower, which is conducive to expanding the heating area and increasing the uniformity of heating.

[0039] Other features and advantages of the present invention will become more apparent after reading the detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0041] Figure 1 is a top view of a gas stove according to an embodiment of the present invention;

[0042] Figure 2 yes Figure 1 A cross-sectional view of the burner;

[0043] Figure 3 yes Figure 1 An exploded view of the middle fire cover assembly and the gas distributor from one perspective;

[0044] Figure 4 yes Figure 1 Schematic diagram of the exploded view of the middle fire cover assembly and the gas distribution plate from another perspective;

[0045] Figure 5 yes Figure 1 A cross-sectional view of the center gas plate;

[0046] Figure 6 yes Figure 1 A top view of the middle and lower cover;

[0047] Figure 7 yes Figure 1 Bottom view of the middle and lower cover;

[0048] Figure 8 yes Figure 1 Bottom view of the middle upper cover;

[0049] Description of reference numerals:

[0050] Gas distribution plate 1;

[0051] Upper cover 11;

[0052] Inner ring channel 11-1;

[0053] First outer ring upper channel 11-2; first inner ring channel 11-2-1; first outer ring channel 11-2-2;

[0054] The second outer ring upper channel 11-3; the second inner ring channel 11-3-1; the second outer ring channel 11-3-2;

[0055] Air dividing frame 11-4; air dividing frame outer wall 11-4-1; first air dividing frame side wall 11-4-2; second air dividing frame side wall 11-4-3; second outward expansion section 11-4-3-1;

[0056] Upper separation rib 11-5; second straight line segment 11-5-1; second inner arc segment 11-5-2; second outer arc segment 11-5-3;

[0057] First inner ring vent 11-6; first outer ring vent 11-7; second inner ring vent 11-8; second outer ring vent 11-9;

[0058] A first air supply port 11-10; a second air supply port 11-11;

[0059] Lower cover 12;

[0060] Inner ring lower channel 12-1;

[0061] First outer ring lower channel 12-2;

[0062] Second outer ring lower channel 12-3;

[0063] Air distribution cover 12-4; air distribution cover bottom 12-4-1; first outer ring lower vent 12-4-1-1; second outer ring lower vent 12-4-1-2; first air distribution cover side wall 12-4-2; second air distribution cover side wall 12-4-3; first outer expansion section 12-4-3-1;

[0064] Lower dividing rib 12-5; first straight line segment 12-5-1; first inner arc segment 12-5-2; first outer arc segment 12-5-3;

[0065] The first sub-cavity A; the second sub-cavity B;

[0066] Fire cover assembly 2;

[0067] Inner fire cover 21; inner ring fire hole 21-1;

[0068] Middle fire cover 22; middle ring inner fire hole 22-1; middle ring outer fire hole 22-2; middle fire cover inner channel 22-3; middle fire cover outer channel 22-4; middle ring fire transfer groove 22-5;

[0069] External fire cover 23; external ring inner fire hole 23-1; external ring outer fire hole 23-2; external fire cover inner channel 23-3; external fire cover outer channel 23-4; external ring fire transfer groove 23-5;

[0070] Burner head assembly 3;

[0071] Air door assembly 4;

[0072] Ignition assembly 5;

[0073] A first ignition needle 51; a second ignition needle 52;

[0074] Thermocouple assembly 6;

[0075] A first thermocouple 61; a second thermocouple 62;

[0076] First gas valve 7; first gas outlet 71; second gas outlet 72;

[0077] Second gas valve 8; third gas outlet 81. DETAILED DESCRIPTION

[0078] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0079] It should be noted that in the description of the present invention, the terms "upper", "lower", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0080] See also Figures 1 to 8 As shown, a gas stove is provided in an embodiment of the present invention, and the gas stove includes a burner and multiple gas valves, wherein the burner includes a fire cover assembly 2, a gas distribution plate 1, a burner head assembly 3 and a damper assembly 4, the damper assembly 4 is installed at the air inlet end of the injector tube in the burner head assembly 3, the burner head assembly 3 conveys external gas to the gas distribution plate 1, and the gas distribution plate 1 rectifies the gas into a gas ring and then conveys it to the corresponding fire cover in the fire cover assembly 2.

[0081] The gas distribution plate 1 includes an upper cover 11 and a lower cover 12. An inner ring upper channel 11-1 and a plurality of outer ring upper channels surrounding the inner ring upper channel 11-1 are formed on the upper part of the upper cover 11. The inner ring upper channel 11-1 and the outer ring upper channel can each correspond to a fire cover respectively. The plurality of outer ring upper channels also surround in sequence from the inside to the outside. Each outer ring upper channel has an inner ring channel and an outer ring channel located outside the inner ring channel. Therefore, the inner ring upper channel 11-1 of the upper cover 11 forms an air outlet ring, and the outer ring upper channel of the upper cover 11 forms two air outlet rings. Each air outlet ring can correspond to a ring fire, so that the burner can form a multi-ring fire. An inner ring lower channel 12-1 and a plurality of outer ring lower channels surrounding the inner ring lower channel 12-1 are formed at the lower portion of the lower cover 12. The plurality of outer ring lower channels are also surrounded in sequence from the inside to the outside. Therefore, the inner ring lower channel 12-1 of the lower cover 12 forms an air intake ring, and the outer ring lower channel of the lower cover 12 forms an air intake ring. Each air intake ring can be supplied with air by an air distribution pipeline.

[0082] When the upper cover 11 and the lower cover 12 are sealed and connected, the inner ring lower channel 12-1 is connected to the inner ring upper channel 11-1, and a plurality of air dividing cavities are defined between the upper cover 11 and the lower cover 12, wherein the inner ring channel and the outer ring channel in the same outer ring upper channel are connected to different outer ring lower channels through different air dividing cavities, and each outer ring lower channel is connected to at least two outer ring upper channels through different air dividing cavities.

[0083] In the embodiment of the present invention, multiple gas valves control the gas flow of the inner ring lower channel 12-1 and multiple outer ring lower channels in one burner, and at least two outer ring lower channels in one burner are controlled by different gas valves. By using multiple gas valves to adjust the gas flow of multiple air inlet rings in the lower cover 12, a variety of different fire-out modes can be combined above the burner. Different fire-out modes can achieve heating of different areas. Therefore, the embodiment of the present invention can better adapt to cooking scenarios with variable heating areas. When the food in the pot is in different areas, the fire can be emitted in the matching area below the food, thereby achieving targeted heating.

[0084] In the embodiment of the present invention, the outer ring lower channel is designed to connect at least two outer ring upper channels, so that an air inlet ring of the lower cover 12 supplies air to at least two air outlet rings of the upper cover 11, so that the burner forms at least two rings of fire with a certain distance and synchronized firepower. Compared with single-ring fire, it can effectively expand the heating area and improve the uniformity of heating.

[0085] Specifically, in this embodiment, two outer ring channels coaxial with the inner ring channel 11-1 are formed on the upper part of the upper cover 11. For the convenience of explanation, the two outer ring channels are respectively: a first outer ring channel 11-2 and a second outer ring channel 11-3. The inner ring channel of the first outer ring channel 11-2 is the first inner ring channel 11-2-1, the outer ring channel of the first outer ring channel 11-2 is the first outer ring channel 11-2-2, the inner ring channel of the second outer ring channel 11-3 is the second inner ring channel 11-3-1, and the outer ring channel of the second outer ring channel 11-3 is the second outer ring channel 11-3-2, see Figure 3 Correspondingly, two outer ring lower channels coaxial with the inner ring lower channel 12-1 are formed at the lower part of the lower cover 12, and the two outer ring lower channels are respectively: a first outer ring lower channel 12-2 and a second outer ring lower channel 12-3, see Figure 4 , Figure 7 shown.

[0086] In addition, the air chamber formed between the upper cover 11 and the lower cover 12 includes a first air chamber A and a second air chamber B. Figure 5 As shown by the middle arrow, the gas flow direction, the first gas chamber A connects the first inner ring channel 11-2-1, the second inner ring channel 11-3-1 and the first outer ring lower channel 12-2, and can deliver the gas from the first outer ring lower channel 12-2 to the non-adjacent first inner ring channel 11-2-1 and the second inner ring channel 11-3-1, the second gas chamber B connects the first outer ring channel 11-2-2, the second outer ring channel 11-3-2 and the second outer ring lower channel 12-3, and can deliver the gas from the second outer ring lower channel 12-3 to the non-adjacent first outer ring channel 11-2-2 and the second outer ring channel 11-3-2.

[0087] The lower part of the lower cover 12 is formed with three air inlet rings in total, which can be adapted to the burner head assembly 3 with three ejector tubes, and the burner head assembly 3 is further connected to the damper assembly 4 with three nozzles, so that the three air inlet rings can not only supply air to the five air outlet rings, but also realize cross-air supply. Figure 1 , Figure 2 As shown, in this embodiment, the burner head assembly 3 includes a burner head body and an inner ring ejector tube, a middle ring ejector tube, and an outer ring ejector tube. Gaskets are provided on the end faces of the burner head body in contact with each ejector tube to increase the sealing performance. The burner head body is a three-ring burner head body, and specific reference may be made to the prior art. It has three air outlets: an inner ring air outlet, a middle ring air outlet, and an outer ring air outlet. Among them, the inner ring air outlet connects the inner ring ejector tube with the inner ring lower channel 12-1, the middle ring air outlet connects the middle ring ejector tube with the first outer ring lower channel 12-2, and the outer ring air outlet connects the outer ring ejector tube with the second outer ring lower channel 12-3.

[0088] The upper part of the upper cover 11 is formed with a total of five air outlet rings, and the five air outlet rings correspond to form a five-ring fire. Specifically, in order to adapt to the five air outlet rings, see Figure 3 As shown, in this embodiment, the fire cover assembly 2 includes an inner fire cover 21, a middle fire cover 22 and an outer fire cover 23. A circle of inner ring fire holes 21-1 is formed on the inner fire cover 21, and the inner ring fire holes 21-1 are connected to the inner ring upper channel 11-1. A circle of middle ring inner fire holes 22-1 and a circle of middle ring outer fire holes 22-2 are formed on the middle fire cover 22, and the middle ring outer fire holes 22-2 surround the middle ring inner fire holes 22-1. The middle ring inner fire holes 22-1 are connected to the first inner ring channel 11-2-1, and the middle ring outer fire holes 22-2 are connected to the first outer ring channel 11-2-2. A circle of outer ring inner fire holes 23-1 and a circle of outer ring outer fire holes 23-2 are formed on the outer fire cover 23. The outer ring outer fire holes 23-2 surround the outer ring inner fire holes 23-1. The outer ring inner fire holes 23-1 are connected to the second inner ring channel 11-3-1, and the outer ring outer fire holes 23-2 are connected to the second outer ring channel 11-3-2.

[0089] See also Figure 4 As shown, in this embodiment, the fire cover 22 includes a top wall, an inner side wall, a middle side wall and an outer side wall. The top wall is annular, the inner side wall extends downward from the inner end of the top wall, and a plurality of middle ring inner fire holes 22-1 distributed circumferentially are formed on the inner side wall, the outer side wall extends downward from the outer end of the top wall, and a plurality of middle ring outer fire holes 22-2 distributed circumferentially are formed on the outer side wall, and the middle side wall also extends downward from the top wall and is located between the inner side wall and the outer side wall. A middle fire cover inner channel 22-3 is formed between the inner side wall and the middle side wall of the middle fire cover 22, and the middle fire cover inner channel 22-3 connects the middle ring inner fire hole 22-1 with the first inner ring channel 11-2-1, and a middle fire cover outer channel 22-4 is formed between the middle side wall and the outer side wall of the middle fire cover 22, and the middle fire cover outer channel 22-4 connects the middle ring outer fire hole 22-2 with the first outer ring channel 11-2-2. Similarly, an outer fire cover inner channel 23-3 and an outer fire cover outer channel 23-4 are formed in sequence at the lower part of the outer fire cover 23. The outer fire cover inner channel 23-3 connects the outer ring inner fire hole 23-1 with the second inner ring channel 11-3-1, and the outer fire cover outer channel 23-4 connects the outer ring outer fire hole 23-2 with the second outer ring channel 11-3-2.

[0090] In this embodiment, the three fire covers and the upper cover 11 can be connected by screws to achieve detachability. In order to achieve effective sealing of the contact end faces and increase thermal resistance, a thermal insulation pad can be added to the contact end faces between the fire cover and the upper cover 11 to improve energy efficiency by reducing heat loss.

[0091] In order to realize radial transfer of flame, in this embodiment, a middle ring fire transfer groove 22-5 connecting the middle ring inner fire hole 22-1 and the middle ring outer fire hole 22-2 is formed on the upper part of the middle fire cover 22, and an outer ring fire transfer groove 23-5 connecting the outer ring inner fire hole 23-1 and the outer ring outer fire hole 23-2 is formed on the upper part of the outer fire cover 23.

[0092] In order to make the gas distribution of each air outlet ring in the upper cover 11 more uniform, a plurality of circumferentially distributed gas distribution covers 12-4 may be formed in the lower part of the lower cover 12 in the embodiment of the present invention, and each gas distribution cover 12-4 forms an air cavity with the upper cover 11, and each air cavity is divided into a first sub-cavity A and a second sub-cavity B which are independent of each other. The circumferentially distributed first sub-cavity A and second sub-cavity B can make the gas in the corresponding air outlet ring above them more uniformly distributed, which is conducive to stable and efficient combustion of the flame.

[0093] In some embodiments, a lower dividing rib 12-5 may be formed on the air dividing cover 12-4, and the air cavity may be divided into two by the lower dividing rib 12-5 to form a first dividing air cavity A and a second dividing air cavity B that are independent of each other.

[0094] In some embodiments, an upper dividing rib 11 - 5 may be formed at the lower portion of the upper cover 11 , and the air cavity may be divided into two by the upper dividing rib 11 - 5 , forming a first sub-cavity A and a second sub-cavity B that are independent of each other.

[0095] In some embodiments, a lower dividing rib 12-5 may be formed on the air dividing cover 12-4 and an upper dividing rib 11-5 may be formed at the lower portion of the upper cover 11. The upper dividing rib 11-5 and the lower dividing rib 12-5 are correspondingly connected to each other. The upper dividing rib 11-5 and the lower dividing rib 12-5 are used to divide the air cavity into two, forming a first dividing air cavity A and a second dividing air cavity B that are independent of each other.

[0096] Specifically, in this embodiment, an air dividing cover 12 - 4 is formed on the upper portion of the lower cover 12 , and a lower dividing rib 12 - 5 is formed on each air dividing cover 12 - 4 for dividing the air dividing cover 12 - 4 . The air dividing cover 12-4 includes an air dividing cover bottom 12-4-1, a first air dividing cover side wall 12-4-2 and a second air dividing cover side wall 12-4-3. The air dividing cover bottom 12-4-1 extends from the inside to the outside. The first air dividing cover side wall 12-4-2 and the second air dividing cover side wall 12-4-3 are located on both sides of the extension direction of the air dividing cover bottom 12-4-1. A first outer ring lower air vent 12-4-1-1 and a second outer ring lower air vent 12-4-1-2 are formed on the air dividing cover bottom 12-4-1. The first outer ring lower air vent 12-4-1-1 connects the first outer ring lower channel 12-2 with the first air dividing cavity A, and the second outer ring lower air vent 12-4-1-2 connects the second outer ring lower channel 12-3 with the second air dividing cavity B.

[0097] See also Figure 6 As shown, the first outer ring lower vent 12-4-1-1 and the second outer ring lower vent 12-4-1-2 are located at the inner end of the gas separation cover bottom 12-4-1 and are separated by the lower dividing rib 12-5, and the gas in the first gas separation cavity A and the second gas separation cavity B flows obliquely upward from the inside to the outside. In order to reduce the resistance to the inflow of gas and facilitate the injection of gas from below, the circumferential spacing of the first gas separation cover side wall 12-4-2 and the second gas separation cover side wall 12-4-3 gradually increases from the inside to the outside, which can reduce the resistance to the air flow entering the air cavity and make the air flow in the air cavity more uniform. The gas separation cover bottom 12-4-1 of this embodiment extends obliquely upward from the inside to the outside, and the gas separation cover bottom 12-4-1 is a curved plate. The upper surface of the gas separation cover bottom 12-4-1 is a concave surface, which can adapt to the gas flow direction and guide the gas to flow upward. The lower surface of the gas separation cover bottom 12-4-1 is a convex surface, which can be conducive to the upward replenishment of the external surrounding air.

[0098] In this embodiment, the lower dividing rib 12-5 is formed on the gas dividing cover bottom 12-4-1, which includes a first inner arc segment 12-5-2, a first straight line segment 12-5-1 and a first outer arc segment 12-5-3 connected in sequence, see Figure 6 As shown, the first straight line segment 12-5-1 extends from the inside to the outside, the first inner arc segment 12-5-2 and the first outer arc segment 12-5-3 are arc-shaped, the first inner arc segment 12-5-2 extends circumferentially from the first straight line segment 12-5-1 to the first air dividing cover side wall 12-4-2, and the first outer arc segment 12-5-3 extends circumferentially from the first straight line segment 12-5-1 to the second air dividing cover side wall 12-4-3, wherein the first inner arc segment 12-5-2 is located above the middle of the first outer ring lower channel 12-2 and the second outer ring lower channel 12-3, the first outer ring lower air vent 12-4-1-1 and the second outer ring lower air vent 12-4-1-2 are respectively located on the opposite sides of the first inner arc segment 12-5-2, and the first outer arc segment 12-5-3 is located below the middle of the second inner ring channel 11-3-1 and the second outer ring channel 11-3-2.

[0099] See also Figure 8 As shown, in order to facilitate positioning and docking, in this embodiment, an air dividing frame 11-4 adapted to be docked with the air dividing cover 12-4 and an upper dividing rib 11-5 adapted to be docked with the lower dividing rib 12-5 are formed at the lower part of the upper cover 11, and the air dividing frame 11-4 extends downward. When the air dividing frame 11-4 and the air dividing cover 12-4 are docked, it can help the installer visually and tactilely confirm whether the upper cover 11 and the lower cover 12 are accurately connected. In this embodiment, the air dividing frame 11-4 is flush with the upper dividing rib 11-5, and the air dividing cover 12-4 is flush with the lower dividing rib 12-5. A gasket can be set between the upper cover 11 and the lower cover 12 to increase the sealing effect of the end surface.

[0100] The air dividing frame 11-4 includes an air dividing frame outer wall 11-4-1, a first air dividing frame side wall 11-4-2 and a second air dividing frame side wall 11-4-3, wherein the air dividing frame outer wall 11-4-1 is correspondingly connected to the outer end of the air dividing cover bottom 12-4-1, the first air dividing frame side wall 11-4-2 is correspondingly connected to the first air dividing cover side wall 12-4-2 by using a first screw, the second air dividing frame side wall 11-4-3 is correspondingly connected to the second air dividing cover side wall 12-4-3 by using a second screw, and the first screw and the second screw are also used for the connection between the air dividing plate 1 and the fire cover assembly 2.

[0101] The upper dividing rib 11-5 includes a second inner arc segment 11-5-2, a second straight segment 11-5-1 and a second outer arc segment 11-5-3 which are connected in sequence; wherein the second inner arc segment 11-5-2 is connected to the first inner arc segment 12-5-2 correspondingly, the second straight segment 11-5-1 is connected to the first straight segment 12-5-1 correspondingly, the second outer arc segment 11-5-3 is connected to the first outer arc segment 12-5-3 correspondingly, the second inner arc segment 11-5-2 extends circumferentially to the first air dividing frame side wall 11-4-2, and the second outer arc segment 11-5-3 extends circumferentially to the second air dividing frame side wall 11-4-3.

[0102] Obviously, in order to achieve the corresponding communication between the upper channel and the air chamber, see Figure 8 As shown, the upper cover 11 is provided with a first inner ring vent 11-6, a first outer ring vent 11-7, a second inner ring vent 11-8 and a second outer ring vent 11-9 located in the air dividing frame 11-4. The first inner ring vent 11-6 connects the first air dividing cavity A with the first inner ring channel 11-2-1, the second inner ring vent 11-8 connects the first air dividing cavity A with the second inner ring channel 11-3-1, the first outer ring vent 11-7 connects the second air dividing cavity B with the first outer ring channel 11-2-2, and the second outer ring vent 11-9 connects the second air dividing cavity B with the second outer ring channel 11-3-2.

[0103] In order to increase the size of the vent and speed up the passage of gas, the first inner ring vent 11-6 extends circumferentially from the second straight line segment 11-5-1 to the second air dividing frame side wall 11-4-3, the second inner ring vent 11-8 extends circumferentially from the second straight line segment 11-5-1 to the second air dividing frame side wall 11-4-3, the first outer ring vent 11-7 extends circumferentially from the second straight line segment 11-5-1 to the first air dividing frame side wall 11-4-2, and the second outer ring vent 11-9 extends circumferentially from the second air dividing frame side wall 11-4-3 to the first air dividing frame side wall 11-4-2.

[0104] In addition, the second air distribution cover side wall 12-4-3 of the present embodiment is formed with a first expansion section 12-4-3-1 expanding outward in a direction away from the first air distribution cover side wall 12-4-2, and correspondingly, a second expansion section 11-4-3-1 expanding outward in a direction away from the first air distribution frame side wall 11-4-2 is formed on the second air distribution frame side wall 11-4-3. The first expansion section 12-4-3-1 and the second expansion section 11-4-3-1 are both located below the second inner ring channel 11-3-1 and the second outer ring channel 11-3-2, the first outer arc section 12-5-3 extends to the middle of the first expansion section 12-4-3-1, and the second outer arc section 11-5-3 extends to the middle of the second expansion section 11-4-3-1. The first expansion section 12-4-3-1 and the second expansion section 11-4-3-1 not only enlarge the first gas distribution cavity A and the second gas distribution cavity B, but also extend the second inner ring vent 11-8 and the second outer ring vent 11-9, which is beneficial to reduce the resistance of the gas channel and increase the uniformity of gas distribution.

[0105] In order to supplement air and improve combustion efficiency, the upper cover 11 of this embodiment is formed with an air supplement channel. Specifically, an air supplement channel is formed between the inner ring upper channel 11-1 and the first outer ring upper channel 11-2 and between the first outer ring upper channel 11-2 and the second outer ring upper channel 11-3. Figure 8 As shown, the air replenishment channel located between the inner ring upper channel 11-1 and the first outer ring upper channel 11-2 has a plurality of first air replenishment ports 11-10 distributed circumferentially, and the air replenishment channel located between the first outer ring upper channel 11-2 and the second outer ring upper channel 11-3 has a plurality of second air replenishment ports 11-11 distributed circumferentially, and the first air replenishment ports 11-10 and the second air replenishment ports 11-11 both extend circumferentially from a first air dividing frame side wall 11-4-2 of one air dividing frame 11-4 to a second air dividing frame side wall 11-4-3 of another air dividing frame 11-4.

[0106] See also Figure 1 As shown, the burner of this embodiment includes an ignition assembly 5. To improve the ignition efficiency, the ignition assembly 5 includes a first ignition needle 51 and a second ignition needle 52. The first ignition needle 51 and the second ignition needle 52 are installed on the burner body. The first ignition needle 51 and the second ignition needle 52 are both arranged between the middle fire cover 22 and the outer fire cover 23, and the first ignition needle 51 and the second ignition needle 52 are respectively located on the opposite sides of the middle fire cover 22. The first ignition needle 51 is used to ignite the inner ring fire hole 21-1, the middle ring outer fire hole 22-2 and the outer ring outer fire hole 23-2, and the second ignition needle 52 is used to ignite the middle ring inner fire hole 22-1 and the outer ring inner fire hole 23-1.

[0107] To ensure safety, the burner of this embodiment includes a thermocouple assembly 6 for flameout protection. The thermocouple assembly 6 specifically includes a first thermocouple 61 and a second thermocouple 62. The first thermocouple 61 and the second thermocouple 62 are installed on the burner body. The first thermocouple 61 is located between the inner fire cover 21 and the middle fire cover 22, and the second thermocouple 62 is located between the middle fire cover 22 and the outer fire cover 23.

[0108] In order to simplify the control, the gas stove of this embodiment has two gas valves: a first gas valve 7 and a second gas valve 8, wherein the first gas valve 7 is connected to the first ignition needle 51 and the first thermocouple 61, and the second gas valve 8 is connected to the second ignition needle 52 and the second thermocouple 62. The first gas valve 7 has two gas outlets: a first gas outlet 71 and a second gas outlet 72. The first gas outlet 71 is connected to the inner ejector pipe of the burner assembly 3 through the first gas distribution pipeline and the damper assembly 4, so as to realize the flow control of the inner ring lower channel 12-1. The second gas outlet 72 is connected to the outer ejector pipe of the burner assembly 3 through the second gas distribution pipeline and the damper assembly 4, so as to realize the flow control of the second outer ring lower channel 12-3. The second gas valve 8 has one gas outlet: a third gas outlet 81. The third gas outlet 81 is connected to the middle ejector pipe of the burner assembly 3 through the third gas distribution pipeline and the damper assembly 4, so as to realize the flow control of the first outer ring lower channel 12-2.

[0109] In this embodiment, the inner ring fire hole 21-1, the outer ring fire hole 22-2, and the outer ring fire hole 23-2 of the burner are controlled by the first gas valve 7, and the first gas valve 7 cooperates with the first ignition needle 51 and the first thermocouple 61 to realize the independent ignition of the corresponding fire hole and the control of the fire power. The inner ring fire hole 22-1 and the inner ring fire hole 23-1 of the burner are controlled by the second gas valve 8, and the second gas valve 8 cooperates with the second ignition needle 52 and the second thermocouple 62 to realize the independent ignition of the corresponding fire hole and the control of the fire power. When using the gas stove, the user can adjust the required heating area and the size of the fire power according to his own cooking needs.

[0110] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A gas stove, characterized in that: Including burner and multiple gas valves, The burner comprises a gas distribution plate, The gas distribution plate comprises: An upper cover, wherein an inner ring upper channel and a plurality of outer ring upper channels surrounding the inner ring upper channel are formed on the upper portion of the upper cover, wherein the outer ring upper channel has an inner ring channel and an outer ring channel; A lower cover, wherein the lower part of the lower cover is formed with an inner ring lower channel and a plurality of outer ring lower channels surrounding the inner ring lower channel, the inner ring lower channel is connected to the inner ring upper channel, the plurality of gas valves are used to control the gas flow of the inner ring lower channel and the plurality of outer ring lower channels, and at least two of the plurality of outer ring lower channels are controlled by different gas valves; An air dividing cavity is formed between the upper cover and the lower cover. The inner ring channel and the outer ring channel in the same outer ring upper channel are connected to different outer ring lower channels through different air dividing cavities respectively. The outer ring lower channel is connected to at least two outer ring upper channels through different air dividing cavities.

2. The gas stove according to claim 1, characterized in that: The upper part of the upper cover is formed with two outer ring upper channels, the lower part of the lower cover is formed with two outer ring lower channels, and the air dividing cavity includes: A first air dividing cavity, wherein the inner ring channel of the two outer ring upper channels is connected to one of the outer ring lower channels through the first air dividing cavity, A second air dividing cavity, wherein the outer ring channel of the two outer ring upper channels is connected to the other outer ring lower channel through the second air dividing cavity.

3. The gas stove according to claim 2, characterized in that: The burner comprises: An inner fire cover, wherein the inner fire cover is formed with an inner ring fire hole, and the inner ring fire hole is connected to the inner ring upper channel; A middle fire cover, wherein the middle fire cover is formed with a middle ring inner fire hole and a middle ring outer fire hole, wherein the middle ring inner fire hole and the middle ring outer fire hole are respectively connected to the inner ring channel and the outer ring channel in one of the outer ring upper channels; The outer fire cover is formed with an outer ring inner fire hole and an outer ring outer fire hole, and the outer ring inner fire hole and the outer ring outer fire hole are respectively connected to the inner ring channel and the outer ring channel in another outer ring upper channel.

4. The gas stove according to claim 3, characterized in that: The burner comprises: A first ignition needle is formed between the middle fire cover and the outer fire cover; a second ignition needle formed between the middle fire cover and the outer fire cover; A first thermocouple is formed between the inner fire cover and the middle fire cover; The second thermocouple is formed between the middle fire cover and the outer fire cover.

5. The gas stove according to claim 2, characterized in that: The upper part of the lower cover is formed with a plurality of circumferentially distributed air dividing covers, the first air dividing cavity and the second air dividing cavity are formed between the air dividing cover and the upper cover, the air dividing cover is formed with a lower dividing rib and / or the lower part of the upper cover is formed with an upper dividing rib, the lower dividing rib and / or the upper dividing rib separate the first air dividing cavity and the second air dividing cavity.

6. The gas stove according to claim 5, characterized in that: The gas distribution cover comprises: The gas-dividing cover bottom extends from the inside to the outside; A first gas separation cover side wall, formed on one side of the gas separation cover bottom; The second air dividing cover side wall is formed on the other side of the air dividing cover bottom, and the circumferential distance between the first air dividing cover side wall and the second air dividing cover side wall gradually increases from the inside to the outside.

7. The gas stove according to claim 6, characterized in that: A first outward expansion section is formed at the outer end of the side wall of the second air distribution cover. The first outward expansion section expands outward in a direction away from the side wall of the first air distribution cover. The lower dividing rib extends to the first outward expansion section.

8. The gas stove according to claim 6, characterized in that: The lower dividing rib comprises: The first straight line segment extends from the inside to the outside; A first inner arc segment circumferentially extends from the first straight line segment to the first air distribution cover side wall; The first outer arc segment circumferentially extends from the first straight line segment to the side wall of the second air distribution cover.

9. The gas stove according to any one of claims 1 to 8, characterized in that: The upper cover is formed with an air supplement channel, and the air supplement channel is located between the inner ring upper channel and the outer ring upper channel and / or between any two outer ring upper channels.

10. The gas stove according to any one of claims 1 to 8, characterized in that: One of the gas valves has two gas outlets, and the two gas outlets are respectively connected to the inner ring lower channel and one of the outer ring lower channel.

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