Gas stove

Abstract

The utility model discloses a gas stove, relates to the technical field of stoves, and aims to solve the problem that only round fire holes are formed in the lower parts of composite fire holes, so that fuel and primary air are not favorably mixed. The gas stove comprises a burner and a burner cap assembly, the burner forms a cavity, and the burner cap assembly covers the burner. A plurality of slotted fire holes are formed in the surface of the side, away from the burner, of the fire cover assembly, extend in the radial direction of the fire cover assembly and are formed in the circumferential direction of the fire cover assembly at intervals. And circular seam fire holes and circular fire holes are formed in the surface of the side, close to the furnace end, of the fire cover assembly, the circular seam fire holes are annular and extend in the circumferential direction of the fire cover assembly, and the circular seam fire holes and the circular fire holes communicate with the multiple strip seam fire holes. The strip-shaped gap structures of the strip-gap fire holes can play a drainage role, so that secondary air on the surface of the fire cover assembly flows into the strip-gap fire holes, and the problem that the secondary air cannot be effectively introduced into the round fire holes is solved. The gas stove disclosed by the utility model is used for heating a cooker during cooking in a kitchen.

Description

Technical Field

[0001] The utility model relates to the technical field of cooking stoves, in particular to a gas stove. Background Art

[0002] A gas stove is a kitchen appliance that uses combustible gas as fuel, ignites through an electronic pulse or piezoelectric ceramics, etc., and burns the fuel for heating and cooking.

[0003] The main components of a gas stove include an injector, a spraying device, a burner head, and a burner cap assembly. Among them, a plurality of fire holes are formed on the burner cap assembly so that the gas can pass through the fire holes for combustion to heat the bottom of the cooking pot.

[0004] Currently, the fire holes formed on the burner cap assembly are usually circular fire holes. The circular fire holes can form a relatively concentrated flame and are suitable for situations that require local high-intensity heating. For cooking scenarios such as slow cooking and baking that require uniform heating of the bottom of the pot and reducing hot spots, circular fire holes are not very suitable. To meet the demand for uniform heating of the bottom of the pot, a composite fire hole with slotted fire holes in the upper part and circular fire holes in the lower part has emerged. However, only circular fire holes are provided in the lower part of this composite fire hole, which is not conducive to the mixing of fuel and primary air. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a gas stove, aiming to solve the problem that only circular fire holes in the lower part of the composite fire hole are not conducive to the mixing of fuel and primary air.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a gas stove, including a burner head and a burner cap assembly. The burner head forms a cavity. The burner cap assembly is covered on the burner head. A plurality of slotted fire holes are formed on the surface of the burner cap assembly away from the burner head. The slotted fire holes extend along the radial direction of the burner cap assembly, and the plurality of slotted fire holes are spaced apart circumferentially along the burner cap assembly. A ring-shaped slotted fire hole and circular fire holes are formed on the surface of the burner cap assembly close to the burner head. Among them, the ring-shaped slotted fire hole is annular and extends circumferentially along the burner cap assembly. The ring-shaped slotted fire hole and the circular fire holes are both communicated with the plurality of slotted fire holes.

[0008] Based on this, the mixed gas of fuel and primary air in the cavity formed by the burner head can flow out from the fire holes formed by the combination of the ring-shaped slotted fire hole and the slotted fire holes, or flow out from the fire holes formed by the combination of the circular fire holes and the slotted fire holes.

[0009] The lower surface of the burner cap assembly, which is provided with circular fire holes and annular slit fire holes, will not be a simple flat surface, but rather a lower surface with depressions formed by the alternating arrangement of annular slits and circular fire holes. In this way, when the fuel and primary air flow and mix inside the burner cap assembly 3, they can collide with the depressed parts when flowing through the lower surface with depressions, which is more conducive to the mixing of fuel and primary air. Thus, the problem that only circular fire holes exist in the lower part of the composite fire holes and the lower surface of the burner cap of the composite fire holes will be a flat surface, which is not conducive to the mixing of fuel and primary air inside the burner cap, is solved.

[0010] In addition, the slit fire hole is a strip-shaped slit, and the slit fire hole can also play a role in guiding the air flow. To a certain extent, the air flowing above it can be guided by it to flow into the slit fire hole and flow along the extension direction of the slit fire hole, and come into contact and mix with the fuel flowing out of the annular slit fire hole or circular fire hole provided in the slit fire hole.

[0011] Moreover, a plurality of slit fire holes are spaced apart on the upper surface of the burner cap assembly, and the plurality of slit fire holes are arranged at intervals along the circumferential direction of the burner cap assembly, which makes the upper surface of the burner cap assembly a surface with depressions. To a certain extent, the resistance of the secondary air flowing through the upper surface of the burner cap assembly will increase, which can increase the retention time of the secondary air on the upper surface of the burner cap assembly, so that the contact time between the fuel and the secondary air is extended, which is conducive to the full contact between the fuel and the secondary air, thereby obtaining a better combustion effect. At the same time, the increase in the retention time of the secondary air on the surface of the burner cap assembly can also enable more secondary air to enter the slit fire hole under the guiding action of the slit fire hole, further enhancing the ability of the slit fire hole to introduce secondary air.

[0012] In some embodiments, the burner cap assembly includes an inner ring burner cap and an outer ring burner cap. Among them, the inner ring burner cap is covered on the burner head. The slit fire holes are opened on the surface of the inner ring burner cap away from the burner head, and at least one of the annular slit fire holes and circular fire holes is opened on the surface of the inner ring burner cap close to the burner head. The outer ring burner cap is covered on the burner head. The slit fire holes are opened on the surface of the outer ring burner cap away from the burner head, and the annular slit fire holes and circular fire holes are opened on the surface of the outer ring burner cap close to the burner head.

[0013] In some embodiments, on the outer ring burner cap, there are multiple annular slit fire holes and multiple circular fire holes. Among them, at least some of the circular fire holes are located inside the multiple annular slit fire holes.

[0014] In some embodiments, a first guiding slope is formed on the side wall of the outer ring burner cap close to the inner ring burner cap, and the first guiding slope is inclined. Along the radial direction of the outer ring burner cap and in the direction away from the axis of the outer ring burner cap, the distance between the first guiding slope and the burner head gradually increases. The slit fire hole penetrates the first guiding slope.

[0015] In some embodiments, a second diversion slope is formed on the side wall of the inner ring burner cap close to the outer ring burner cap, and the second diversion slope is inclined. Along the radial direction of the inner ring burner cap and away from the axis of the inner ring burner cap, the distance between the second diversion slope and the burner head gradually decreases. The slit-shaped flame holes penetrate through the second diversion slope.

[0016] In some embodiments, the center of the circular flame hole coincides with the center line of the slit-shaped flame hole.

[0017] In some embodiments, on the outer ring burner cap, a plurality of circular flame holes are arranged at intervals along the circumferential direction of a ring-shaped slit-shaped flame hole, forming a ring of circular flame holes. A ring of circular flame holes and a ring-shaped slit-shaped flame hole are arranged alternately.

[0018] In some embodiments, on the outer ring burner cap, a plurality of circular flame holes are arranged at intervals along the circumferential direction of a ring-shaped slit-shaped flame hole, forming a ring of circular flame holes. Multiple rings of circular flame holes and a plurality of ring-shaped slit-shaped flame holes are arranged alternately.

[0019] In some embodiments, the axis of the circular flame hole is parallel to the axis of the outer ring burner cap.

[0020] In some embodiments, on the outer ring burner cap, there are a plurality of ring-shaped slit-shaped flame holes and a plurality of circular flame holes. Among them, at least one ring-shaped slit-shaped flame hole is located outside the plurality of circular flame holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 One of the schematic diagrams of a gas stove provided by an embodiment of the present application;

[0023] Figure 2 One of the schematic diagrams of a gas stove provided by an embodiment of the present application;

[0024] Figure 3 One of the schematic diagrams of a gas stove provided by an embodiment of the present application;

[0025] Figure 4 Schematic diagram of a burner cap assembly in the related art;

[0026] Figure 5 One of the schematic diagrams of a burner cap assembly provided by an embodiment of the present application;

[0027] Figure 6 One of the schematic diagrams of a burner cap assembly provided by an embodiment of the present application;

[0028] Figure 7 The third schematic diagram of the burner cap assembly provided by the embodiment of the present application;

[0029] Figure 8 The fourth schematic diagram of the burner cap assembly provided by the embodiment of the present application;

[0030] Figure 9 The fifth schematic diagram of the burner cap assembly provided by the embodiment of the present application;

[0031] Figure 10 The first schematic diagram of the inner ring burner cap provided by the embodiment of the present application;

[0032] Figure 11 The fourth schematic diagram of a gas stove provided by the embodiment of the present application;

[0033] Figure 12 The schematic diagram of the outer ring burner cap provided by the embodiment of the present application;

[0034] Figure 13 The fifth schematic diagram of a gas stove provided by the embodiment of the present application;

[0035] Figure 14 The second schematic diagram of the inner ring burner cap provided by the embodiment of the present application.

[0036] Reference numerals:

[0037] 100 - Gas stove; 11 - Bottom shell; 10 - Installation cavity; 12 - Panel; 120 - Avoidance hole; 121 - Liquid receiving tray; 14 - Valve body; 15 - Knob; 150 - Knob installation hole; 151 - Knob waterproof ring; 16 - Ignition needle; 17 - Thermocouple;

[0038] 2 - Burner; 21 - Burner head; 210 - Cavity; 22 - Burner head cover; 220 - Air outlet; 2100 - Secondary air supply channel;

[0039] 3 - Burner cap assembly; 31 - Inner ring burner cap; 32 - Outer ring burner cap; 33 - Burner cap seat; 330 - Air inlet;

[0040] 03 - Burner cap assembly;

[0041] 41 - First diversion slope; 42 - Second diversion slope;

[0042] 211 - Slit fire hole; 212 - Ring slit fire hole; 213 - Circular fire hole. Detailed implementation manners

[0043] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the scope of protection of the present utility model.

[0044] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "inner", "outer", etc. is based on the orientation or relative positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. Without special instructions, in the case of satisfying the relative positional relationship shown in the drawings, the above-described orientation description can be flexibly set during the actual application process.

[0045] The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise stated, the meaning of "a plurality" is two or more.

[0046] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", and "communicated" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection. It may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0047] In the embodiments of the present utility model, the term "comprising", "including" or any other variant thereof is intended to cover a non-exclusive inclusion, so that a process, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, article or device including the element.

[0048] In the embodiments of the present utility model, words such as "exemplary" or "for example" are used to represent examples, illustrations or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present utility model should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner.

[0049] This application provides a gas stove, as Figure 1 shown, Figure 1 is a schematic diagram of a gas stove 100 provided by this application. The gas stove 100 provided by this application may include a bottom shell 11, a panel 12, and a burner 2. Among them, the bottom shell 11 forms an installation cavity 10 with an opening. The bottom shell 11 is mainly used to install relevant components of the gas stove 100. For example, the burner 2, a gas control system, an electronic ignition assembly, etc. These components are arranged in the installation cavity 10 of the bottom shell 11 of the gas stove. Among them, the burner 2 is arranged in the installation cavity 10 of the bottom shell 11. The burner 2 is the core component of the gas stove 100. Through the burner 2, fuel and primary air can be mixed and burned in a certain manner.

[0050] On this basis, the above-mentioned panel 12 is covered on the bottom shell 11, and the panel 12 is used to cover the installation cavity 10 of the bottom shell 11. In this way, the panel 12 can protect the components arranged in the installation cavity 10.

[0051] In addition, an avoidance hole 120 is also opened on the panel 12, and the burner 2 is arranged opposite to the avoidance hole 120. In this way, when the burner 2 burns fuel to generate a flame, the panel 12 will not block the flame generated by the burner 2 burning fuel, ensuring that the burner 2 can work normally.

[0052] Continue to refer to Figure 1 , in addition to the above main components, the gas stove 100 also includes some components that are indispensable for realizing the gas stove 100. These components include a valve body 14, a knob 15, an ignition needle 16, a thermocouple 17, etc. (see Figure 2 ).

[0053] Among them, the valve body 14 is used to control the on-off of the gas in the burner 2 or control the increase or decrease of the gas flow rate. The knob 15 is connected to the valve body 14, so that the user can control ignition and the size of the flame through the knob 15. When the knob 15 is rotated, fuel flows into the burner 2, and the fuel and primary air are mixed in the burner 2 and flow out from it. When the knob 15 is rotated, the ignition needle 16 will ignite the flowing fuel, and the fuel burns to form a flame.

[0054] When the gas stove 100 goes out, the thermocouple 17 can sense the flameout, and then the valve body 14 can be controlled to close through relevant operations, stopping the supply of gas to the burner 2. For example, the thermocouple 17 is electrically connected to the controller. After the thermocouple 17 senses the flameout, it sends an electrical signal to the controller. After receiving the electrical signal sent by the thermocouple 17, the controller controls the valve body 14 electrically connected to it to close.

[0055] Continue to refer to Figure 1 , the gas stove 100 may further include some components to improve the gas stove 100. A knob mounting hole 150 is formed on the panel 12, and the knob 15 is mounted in the knob mounting hole 150. In this case, in order to prevent the liquid accidentally overflowing from the cookware from flowing into the installation cavity 10 of the bottom case 11 through the knob mounting hole 150, the gas stove 100 may further include a knob waterproof ring 151, which is disposed at the knob mounting hole 150 to prevent the overflowing liquid from flowing into the installation cavity 10 of the bottom case 11 through the knob mounting hole 150.

[0056] Similarly, the overflowing liquid may also flow into the interior of the bottom case 11 through the avoidance hole 120 on the panel 12. Therefore, a liquid receiving tray 121 is provided at the avoidance hole 120, and the overflowing liquid can flow into the liquid receiving tray 121. To further ensure that the overflowing liquid does not flow into the installation cavity 10 of the bottom case 11, a liquid receiving tray waterproof ring may also be provided around the liquid receiving tray 121 for further sealing.

[0057] Next, the above burner will be further described in conjunction with the drawings. As Figure 3 shown, the burner provided by the present application includes a burner head 21, and the burner head 21 is an important component of the burner 2. A cavity 210 is formed inside the burner head 21. Fuel and primary air can be mixed in a certain way in the cavity 210 formed by the burner head 21, and the mixed fuel and primary air can flow out of the cavity 210 and be ignited to form a flame.

[0058] On this basis, as Figure 3 shown, the gas stove 100 further includes a burner cap assembly 3, the burner cap assembly 3 is covered on the burner head 21, and the burner cap assembly 3 is provided with fire holes communicating with the cavity 210, so that the fuel and primary air mixed in the cavity 210 can flow out of the fire holes provided on the burner cap assembly 3, and then be ignited to form a flame.

[0059] Continue to refer to Figure 3 , the burner provided by the present application further includes a burner head cover 22, the burner head cover 22 is covered on the burner head 21, and the burner head cover 22 is provided with an air outlet 220, and the air outlet 220 communicates with the cavity 210 formed by the burner head 21. In this way, the fuel and primary air mixed in the cavity 210 can flow out through the air outlet 220 provided on the burner head cover 22.

[0060] Generally, the fire holes opened on the fire cap assembly 3 are circular fire holes. As Figure 4 shown, Figure 4 is the fire cap assembly 03 in the related art. Only circular fire holes are opened on the fire cap assembly 03 in the related art. The circular fire holes penetrate the fire cap assembly 03 along the axis of the fire cap assembly 03. The flame heat formed on the surface of the fire cap assembly 03 with only circular fire holes is relatively concentrated, and it is not suitable for cooking scenarios that require uniform heating of the bottom of the pot, such as stewing and baking.

[0061] To solve this problem, composite fire holes have emerged. The upper part of the composite fire hole is a strip-shaped slit fire hole, and the lower part is a circular fire hole. The strip-shaped slit fire hole and the circular fire hole are axially connected to form a composite fire hole. Only the lower part of the composite fire hole has a circular fire hole. Based on this, it can be understood that the lower surface of the fire cap with this composite fire hole will be a flat surface, which is not conducive to the mixing of fuel and primary air inside the fire cap.

[0062] To solve the problems existing in the above composite fire holes, this application provides a fire cap assembly. The fire cap assembly 3 provided in this application can be covered on the burner 21. As Figure 5 shown, a plurality of slit fire holes 211 are opened on the surface of the fire cap assembly 3 away from the burner 21. The slit fire holes 211 extend along the radial direction of the fire cap assembly 3. In addition, a plurality of slit fire holes 211 are arranged at intervals along the circumferential direction of the fire cap assembly 3.

[0063] Again, as Figure 6 shown, an annular slit fire hole 212 and a circular fire hole 213 are opened on the surface of the fire cap assembly 3 close to the burner 21. Among them, the annular slit fire hole 212 is annular and extends along the circumferential direction of the fire cap assembly 3. Refer to Figure 7 , both the annular slit fire hole 212 and the circular fire hole 213 are connected to the slit fire holes 211 to form a new type of fire hole structure.

[0064] Based on this, for the convenience of description, the surface of the fire cap assembly 3 away from the burner 21 is called the upper surface, and the surface of the fire cap assembly 3 close to the burner 21 is called the lower surface.

[0065] Next, the fire holes formed by the connection of the slit fire holes 211 and the annular slit fire hole 212 will be described first. As Figure 7 shown, in the direction perpendicular to the fire cap assembly 3, one annular slit fire hole 212 is connected to a plurality of slit fire holes 211, and a rectangular fire hole is formed between each slit fire hole 211 connected to the annular slit fire hole 212 and the annular slit fire hole 212.

[0066] Continue to refer to Figure 7, in a direction perpendicular to the burner cap assembly 3, a circular flame hole 213 communicates with a slit flame hole 211, and an approximately elliptical flame outlet hole is formed between the circular flame hole 213 and the slit flame hole 211.

[0067] In this case, the lower surface of the burner cap assembly 3 provided in the present application will not be a simple flat surface, but a lower surface with depressions formed by arranging annular slits and circular flame holes at intervals. In this way, when the fuel and the primary air flow and mix inside the burner cap assembly 3, they can collide with the depressed parts when flowing through the lower surface with depressions, which is more conducive to the mixing of the fuel and the primary air. Thus, it solves the problem that only circular flame holes exist in the lower part of the composite flame hole, and the lower surface of the burner cap of the composite flame hole will be a flat surface, which is not conducive to the mixing of the fuel and the primary air inside the burner cap.

[0068] Taking the flame outlet hole formed by the communication between the slit flame hole 211 and the annular slit flame hole 212 as an example for illustration, the gas in the burner head 21 flows from bottom to top and flows out from the flame outlet holes opened on the burner cap assembly 3.

[0069] For example, flowing out from the flame outlet hole formed by the slit flame hole 211 and the annular slit flame hole 212, the mixed gas of fuel and primary air first flows into the annular slit flame hole 212, and then further flows into the slit flame hole 211 communicating with the annular slit flame hole 212. The slit flame hole 211 opened on the upper surface of the burner cap assembly 3 has a certain depth in the axial direction of the burner cap assembly 3 (see Figure 8 ), so the mixed gas of gas and primary air flowing from the annular slit flame hole 212 into the slit flame hole 211 will not immediately escape and separate from the burner cap assembly 3. In addition, the slit flame hole 211 opened on the upper surface of the burner cap assembly 3 extends along the radial direction of the burner cap assembly 3. Therefore, the mixed gas of gas and primary air can further diffuse and mix along the inner wall of the slit flame hole 211 when flowing into the slit flame hole 211.

[0070] In addition, it can be understood that the area of the slit flame hole 211 is obviously larger than that of the circular flame hole. The flame hole with a relatively large area is conducive to the mixing of fuel and primary air and the contact with secondary air.

[0071] As can be seen from the above, the slit flame hole 211 opened on the upper surface of the burner cap assembly 3 has a certain depth in the axial direction of the burner cap assembly 3 and extends along the radial direction of the burner cap assembly 3. This enables the gas and the primary air to be further mixed in the slit flame hole 211. Compared with the burner cap assembly 3 only opening circular holes as flame holes, with the upper surface of the burner cap assembly 3 being a plane, opening the slit flame hole 211 on the upper surface of the burner cap assembly 3 can make the mixing of fuel and primary air more sufficient.

[0072] In addition, the slotted flame holes 211 are strip-shaped slits, which can also play a role in guiding the airflow. To a certain extent, the air flowing above it can be guided by it to flow into the slotted flame holes 211 and flow along the extension direction of the slotted flame holes 211, and come into contact and mix with the fuel flowing out from the annular slotted flame holes 212 or circular flame holes 213 formed in the slotted flame holes 211.

[0073] Moreover, since a plurality of slotted flame holes 211 are spaced apart on the upper surface of the burner cap assembly 3, and the plurality of slotted flame holes 211 are arranged at intervals along the circumferential direction of the burner cap assembly 3, the upper surface of the burner cap assembly 3 becomes a sunken surface. To a certain extent, the resistance of the secondary air flowing through the upper surface of the burner cap assembly 3 will increase, which can increase the residence time of the secondary air on the upper surface of the burner cap assembly 3, so that the contact time between the fuel and the secondary air is extended, which is beneficial to the full contact between the fuel and the secondary air, and thus a better combustion effect can be obtained.

[0074] It should be noted that the sunken surface formed by the slotted flame holes 211 on the burner cap assembly 3 increases the residence time of the secondary air on the surface of the burner cap assembly 3, and can also make more secondary air flow into the slotted flame holes 211 under the drainage of the slotted flame holes 211, thereby further improving the ability of the burner cap assembly 3 to introduce secondary air.

[0075] In summary, the burner cap assembly 3 provided in this application can also solve the problem that the burner cap assembly 3 only has circular flame holes, and the upper surface of the burner cap assembly 3 is a flat surface, which cannot effectively introduce secondary air and mixed air.

[0076] In addition, it should be noted that the slotted flame holes 211 formed on the upper surface of the burner cap assembly 3 do not penetrate the burner cap assembly 3 in the direction of the burner cap assembly 3 pointing to the burner head 21. That is, the slotted flame holes 211 are strip-shaped grooves that sink along the axis direction of the burner head 21 and toward the direction close to the burner head 21.

[0077] Similarly, the annular slotted flame holes 212 and the circular flame holes 213 formed on the lower surface of the burner cap assembly 3 do not penetrate the burner cap assembly 3 in the direction of the burner head 21 pointing to the burner cap assembly 3. That is, the annular slotted flame holes 212 are annular grooves that sink along the axis direction of the burner head 21 and toward the direction away from the burner head 21. The circular flame holes 213 are circular grooves that sink along the axis direction of the burner head 21 and toward the direction away from the burner head 21.

[0078] Based on this, a plurality of slotted flame holes 211 formed on the upper surface of the burner cap assembly 3 communicate with the annular slotted flame holes 212 and the circular flame holes 213 formed on the lower surface of the burner cap assembly 3. In the axis direction of the burner head 21, a new type of flame hole formed between the slotted flame holes 211 and the annular slotted flame holes 212 or the circular flame holes 213 penetrates the entire burner cap assembly 3.

[0079] It can be understood that a plurality of annular slit fire holes 212 and a plurality of circular fire holes 213 can be formed in the burner cap assembly 3 provided in the present application. The annular slit fire holes 212 and the circular fire holes 213 can form a plurality of novel fire holes with a plurality of slit fire holes formed in the burner cap assembly 3. The aforementioned novel fire holes can be evenly distributed on the burner cap assembly 3 so that the burner cap assembly 3 can evenly heat the cooking utensil.

[0080] Next, the burner cap assembly 3 provided in the present application will be described. As Figure 9 shown, the burner cap assembly 3 provided in the present application includes an inner ring burner cap 31 and an outer ring burner cap 32.

[0081] Among them, the inner ring burner cap 31 is covered on the burner head 21, and slit fire holes 211 are formed on the surface of the inner ring burner cap 31 away from the burner head 21. At least one of the annular slit fire holes 212 and the circular fire holes 213 is formed on the surface of the inner ring burner cap 31 close to the burner head 21. Generally, the overall volume of the inner ring burner cap 31 is small, and one of the annular slit fire holes 212 or the circular fire holes 213 can be selected for processing from the perspective of processing and forming. For example, as Figure 9 shown, slit fire holes 211 are formed on the surface of the inner ring burner cap 31 provided in the present application away from the burner head 21. As Figure 10 shown, only annular slit fire holes 212 are formed on the surface of the inner ring burner cap 31 close to the burner head 21.

[0082] In some embodiments of the present application, the fire holes formed on the surface of the inner ring burner cap 31 close to the burner head 21 can also be circular fire holes 213.

[0083] In this way, the slit fire holes 211 formed on the surface of the inner ring burner cap 31 away from the burner head 21 can increase the resistance of the inner ring burner cap 31 to the secondary air, so that the contact time between the fuel and the secondary air is increased. The structure of the strip-shaped gaps of the slit fire holes 211 can also facilitate the introduction of the secondary air into the slit fire holes 211, thereby enhancing the ability of the inner ring burner cap 31 to introduce the secondary air. In addition, the fire hole area of the slit fire holes 211 formed on the surface of the inner ring burner cap 31 away from the burner head 21 is increased, which is beneficial to the better mixing of the fuel flowing out from the annular slit fire holes 212 or the circular fire holes 213 and the primary air.

[0084] The outer ring burner cap 32 can be covered on the burner head 21, and as Figure 6 shown, slit fire holes 211 are formed on the surface of the outer ring burner cap 32 away from the burner head 21, and annular slit fire holes 212 and circular fire holes 213 are formed on the surface of the outer ring burner cap 32 close to the burner head 21.

[0085] In this way, the slit-shaped fire holes 211 formed on the surface of the outer ring burner cap 32 away from the burner head 21 can increase the resistance of the outer ring burner cap 32 to the secondary air, thereby increasing the contact time between the fuel and the secondary air. The structure of the slit-shaped gaps of the slit-shaped fire holes 211 can also facilitate the guiding of the secondary air into the slit-shaped fire holes 211, thereby enhancing the ability of the outer ring burner cap 32 to introduce the secondary air. In addition, the increased fire hole area of the slit-shaped fire holes 211 formed on the surface of the outer ring burner cap 32 away from the burner head 21 is conducive to better mixing of the fuel flowing out from the annular slit fire holes 212 or the circular fire holes 213 with the primary air.

[0086] As Figure 11 shown, the burner cap assembly 3 provided in the present application further includes a burner cap base 33, and the burner cap base 33 is annular. The burner cap base 33 can be covered on the burner head cover 22, and an air inlet 330 is formed on the side of the burner cap base 33 close to the burner head cover 22, and the air inlet 330 can communicate with the air outlet 220. The outer ring burner cap 32 is covered on the burner cap base 33 and communicates with the burner cap base 33, and the outer ring burner cap 32 is indirectly covered on the burner head 21 through the burner cap base 33.

[0087] In this way, after the fuel in the cavity 210 of the burner head 21 is mixed with the primary air, it flows into the air inlet 330 communicating with the air outlet 220 through the air outlet 220 formed on the burner head cover 22, and then enters between the burner cap base 33 and the outer ring burner cap 32, and flows out from the fire holes formed on the outer ring burner cap 32 and is ignited.

[0088] It should be noted that an annular cavity corresponding to the inner ring burner cap 31 is formed on the burner head 21, and the inner ring burner cap 31 can be directly covered on the burner head 21 and communicate with the corresponding annular cavity.

[0089] As can be seen from the above, the outer ring burner cap 32 provided in the present application is provided with slit-shaped fire holes 211 on the surface on the side away from the burner head 21, and annular slit fire holes 212 and circular fire holes 213 on the surface on the side close to the burner head 21.

[0090] Based on this, in some embodiments of the present application, as Figure 6As shown, there are multiple annular slit fire holes 212 formed in the outer ring burner cap 32, and multiple circular fire holes 213. Among them, at least some of the circular fire holes 213 are located inside the multiple annular slit fire holes 212. It should be noted that the multiple annular slit fire holes 212 in "at least some of the circular fire holes 213 are located inside the multiple annular slit fire holes 212" should be understood as the inside of all the annular slit fire holes 212, that is, at least some of the circular fire holes 213 are located at the innermost side of the outer ring burner cap 32. In this way, the problem of insufficient combustion caused by insufficient secondary air in the inner ring of the outer ring burner cap 32 can be solved, and further the problem of uneven firepower of the entire outer ring burner cap 32 caused by insufficient combustion due to insufficient secondary air in the inner ring (that is, the firepower in the inner ring is small, less than the firepower in the outer ring) can be solved.

[0091] Next, an explanation will be given with reference to the accompanying drawings. As Figure 6 shown, in some embodiments, at least one ring of circular fire holes 213 is provided in the innermost ring fire holes of the outer ring burner cap 32. It should be noted that one ring of circular fire holes 213 is formed by multiple circular fire holes 213 arranged at intervals along the inner circumference of the outer ring burner cap 32.

[0092] It should be noted that the fire holes composed of the circular fire holes 213 and the slit fire holes 211 have a stronger entrainment ability than the fire holes composed of the annular slit fire holes 212 and the slit fire holes 211.

[0093] When the fuel flows out of the outer ring burner cap 32, the fuel will first flow into the annular slit fire holes 212 or the circular fire holes 213, and then flow into the slit fire holes 211. Obviously, when the fuel enters the slit fire holes 211 through the circular fire holes 213 and the annular slit fire holes 212 respectively, the area of a single circular fire hole 213 is smaller than that of an annular slit fire hole 212. The increase in the cross-sectional area through which the fuel flows will cause the flow velocity per unit area to decrease. Therefore, the flow velocity of the fuel flowing into the slit fire holes 211 from the circular fire holes 213 is faster, and the velocity of the fuel flowing into the slit fire holes 211 from the circular fire holes 213 is greater than the velocity of the fuel flowing into the slit fire holes 211 from the annular slit fire holes 212.

[0094] In this case, the flame holes formed by the combination of the circular flame holes 213 and the slit flame holes 211 have a higher fuel flow rate than the flame holes formed by the combination of the annular slit flame holes 212 and the slit flame holes 211. It can be understood that the faster the fuel flow rate, the stronger its ability to entrain the surrounding gas. Therefore, the flame holes formed by the combination of the circular flame holes 213 and the slit flame holes 211 have a stronger entrainment ability and can entrain more secondary air, thus solving the problem of insufficient combustion of the fuel inside the outer ring burner cap 32 caused by insufficient secondary air. In this way, the firepower inside the outer ring burner cap 32 is improved, making the overall firepower of the burner cap more balanced (the difference in firepower from the inside to the outside of the burner cap is reduced).

[0095] As Figure 12 shown, in some embodiments of the present application, a first diversion slope 41 is formed on the side wall of the outer ring burner cap 32 close to the inner ring burner cap 31, and the first diversion slope 41 is inclined. Specifically, the first diversion slope 41 is along the radial direction of the outer ring burner cap 32 and away from the axis of the outer ring burner cap 32, and the distance between the first diversion slope 41 and the burner head 21 gradually increases. And the slit flame holes 211 penetrate the first diversion slope 41 along the radial direction of the outer ring burner cap 32.

[0096] In addition, as Figure 13 shown, the burner head cover 22 and the burner cap seat 33 are spaced apart, a secondary air replenishment channel 2100 is formed between the burner head cover 22 and the burner cap seat 33, and there is a gap between the outer ring burner cap 32 arranged outside the inner ring burner cap 31 and the inner ring burner cap 31, and this gap is connected to the secondary air replenishment channel 2100 opened on the burner head 21.

[0097] In this way, a part of the secondary air entering between the inner ring burner cap 31 and the outer ring burner cap 32 through the secondary air replenishment channel 2100 rises along the axial direction of the outer ring burner cap 32, and another part of the secondary air can flow along the first diversion slope 41 under the diversion action of the first diversion slope 41, and then flow along the upper surface of the outer ring burner cap 32 and can flow into the slit flame holes 211 penetrating the first diversion slope 41. The secondary air flowing into the slit flame holes 211 along the first diversion slope 41 can better contact and mix with the fuel at the slit flame holes 211, so that the fuel can burn more fully and improve the overall thermal efficiency of the gas stove 100.

[0098] As Figure 14As shown, in some embodiments of the present application, a second diversion slope 42 is formed on the side wall of the inner ring burner cap 31 close to the outer ring burner cap 32, and the second diversion slope 42 is inclined. Specifically, the second diversion slope 42 is along the radial direction of the inner ring burner cap 31 and away from the axis of the inner ring burner cap 31, and the distance between the second diversion slope 42 and the burner head 21 gradually decreases. And the slot-shaped fire holes 211 penetrate through the second diversion slope 42 along the radial direction of the inner ring burner cap 31.

[0099] In this way, a part of the secondary air entering between the inner ring burner cap 31 and the outer ring burner cap 32 through the secondary air supply channel 2100 will rise along the axial direction of the outer ring burner cap 32, and another part of the secondary air can flow along the second diversion slope 42 under the diversion effect of the second diversion slope 42, and then flow along the upper surface of the inner ring burner cap 31 and can flow into the slot-shaped fire holes 211 penetrating through the second diversion slope 42. The secondary air flowing into the slot-shaped fire holes 211 along the second diversion slope 42 can better contact and mix with the fuel at the slot-shaped fire holes 211, so that the fuel can burn more fully and improve the overall thermal efficiency of the gas stove 100.

[0100] When the circular fire holes 213 are connected and combined with the slot-shaped fire holes 211 to form fire holes, the center of the circle of the circular fire holes 213 coincides with the center line of the slot-shaped fire holes 211.

[0101] Taking the outer ring burner cap 32 as an example, when the center of the circle of the circular fire holes 213 opened on the lower surface of the outer ring burner cap 32 coincides with the center line of the slot-shaped fire holes 211 opened on the upper surface of the outer ring burner cap 32, the cross-sectional area of the communication area between the circular fire holes 213 and the slot-shaped fire holes 211 is the largest, that is, the fire hole area of the fire holes formed by the combination of the circular fire holes 213 and the slot-shaped fire holes 211 is the largest at this time, so as to ensure that enough fuel can flow out therefrom and ensure the normal combustion of the flame.

[0102] On the outer ring burner cap 32, a plurality of circular fire holes 213 are arranged at intervals along the circumferential direction of a ring-shaped slot fire hole 212 to form a ring of circular fire holes 213. On this basis, a ring of circular fire holes 213 and a ring-shaped slot fire hole 212 are arranged alternately along the radial direction of the outer ring burner cap 32.

[0103] On the one hand, the fire holes formed by the combination of the circular fire holes 213 and the slot-shaped fire holes 211 have strong entrainment ability and can entrain more secondary air, so that the fuel can burn more fully. In this way, the alternate arrangement of a ring of circular fire holes 213 and a ring-shaped slot fire hole 212 along the radial direction of the outer ring burner cap 32 can improve the overall ability of the outer ring burner cap 32 to entrain secondary air, so that the fuel can burn more fully. On the other hand, the part without fire holes between the plurality of circular fire holes 213 arranged at intervals along a ring-shaped slot fire hole 212 can play a role in strengthening the strength of the outer ring burner cap.

[0104] On the outer ring burner cap 32, a plurality of circular fire holes 213 are arranged at intervals along the circumferential direction of a ring-shaped slit fire hole, forming a ring of circular fire holes. On this basis, it can also be that multiple rings of circular fire holes 213 and multiple ring-shaped slit fire holes 212 are arranged alternately.

[0105] For example, two ring-shaped slit fire holes 212 and two rings of circular fire holes 213 are arranged alternately along the radial direction of the outer ring burner cap 32.

[0106] In this way, it can not only improve the ability of the outer ring burner cap 32 to entrain secondary air, but also enhance the structural strength of the outer ring burner cap 32.

[0107] In some embodiments of the present application, the axis of the circular fire hole 213 is parallel to the axis of the outer ring burner cap 32. In this way, the fire holes formed by the combination of the circular fire holes 213 and the slit fire holes 211 provided on the outer ring burner cap 32 can heat the bottom of the cooking utensil in the vertical direction, ensuring that compared with the flame in the inclined direction, heating the cooking utensil in the vertical direction can ensure that the heat of the flame is more fully used for heating the cooking utensil.

[0108] Based on this, it should be noted that when circular fire holes 213 are provided on the inner ring burner cap 31, the axis of the circular fire holes 213 provided on the inner ring burner cap 31 can be parallel to the axis of the inner ring burner cap 31, so that the fire holes formed by the combination of the circular fire holes 213 and the slit fire holes 211 on the inner ring burner cap 31 can heat the bottom of the cooking utensil in the vertical direction to achieve a better heating effect.

[0109] In some embodiments of the present application, on the outer ring burner cap 32, there are multiple ring-shaped slit fire holes 212 and multiple circular fire holes 213. Among them, at least one ring-shaped slit fire hole 212 is located outside the circular fire holes 213. That is, at least one ring-shaped slit fire hole 212 is located outside all the circular fire holes 213, that is, at least one ring-shaped slit fire hole 212 is provided on the outermost side of the outer ring burner cap 32.

[0110] Since along the radial direction of the outer ring burner cap 32, the closer to the outside of the outer ring burner cap 32, the more sufficient the secondary air. As described above, the fire holes formed by the combination of the circular fire holes 213 and the slit fire holes 211 have a strong entrainment ability. Therefore, the outermost side of the outer ring burner cap 32 is provided with a ring-shaped slit fire hole 212. Thus, the entrainment ability of the fire holes on the outermost side of the outer ring burner cap 32 is relatively weak, but because the secondary air on the outside of the outer ring burner cap 32 is more sufficient. Therefore, it is possible to reduce the difference in the fire power of the flame on the outside of the outer ring burner cap 32 and the fire power of the flame on the inside of the outer ring burner cap 32 while ensuring that the fuel in the outermost ring of the outer ring burner cap 32 can burn fully. Make the fire power of the entire outer ring burner cap 32 more balanced.

[0111] In the description of this specification, specific features, structures, materials, or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0112] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A gas stove, characterized in that: include: A furnace head is formed with a cavity; A fire cover assembly, which is arranged on the burner head; A plurality of slit fire holes are provided on a surface of one side of the fire cover assembly away from the burner head, and the slit fire holes extend along the radial direction of the fire cover assembly; the plurality of slit fire holes are provided at intervals along the circumference of the fire cover assembly; An annular fire hole and a circular fire hole are provided on a side surface of the fire cover assembly close to the burner head; the annular fire hole is annular and extends along the circumference of the fire cover assembly; the annular fire hole and the circular fire hole are both connected to the plurality of strip fire holes.

2. The gas stove according to claim 1, characterized in that: The fire cover assembly comprises: An inner ring fire cover, the inner ring fire cover is arranged on the burner head; the inner ring fire cover is provided with the slit fire holes on a side surface away from the burner head, and at least one of the annular slit fire holes and the circular fire holes is provided on a side surface of the inner ring fire cover close to the burner head; An outer ring fire cover is arranged on the burner head; the surface of the outer ring fire cover on one side away from the burner head is provided with the strip fire holes, and the surface of the outer ring fire cover on one side close to the burner head is provided with the annular fire holes and the circular fire holes.

3. The gas stove according to claim 2, characterized in that: On the outer ring fire cover, there are a plurality of annular fire holes and a plurality of circular fire holes; Wherein, at least part of the circular fire holes are located inside the plurality of annular fire holes.

4. The gas stove according to claim 2, characterized in that: A first guide slope is formed on the side wall of the outer ring fire cover close to the inner ring fire cover, and the first guide slope is inclined; along the radial direction of the outer ring fire cover and away from the axis of the outer ring fire cover, the distance between the first guide slope and the burner head gradually increases; the slit fire hole runs through the first guide slope.

5. The gas stove according to claim 2, characterized in that: A second guide slope is formed on the side wall of the inner ring fire cover close to the outer ring fire cover, and the second guide slope is inclined; along the radial direction of the inner ring fire cover and away from the axis of the inner ring fire cover, the distance between the second guide slope and the burner head gradually decreases; the slit fire hole runs through the second guide slope.

6. The gas stove according to claim 1, characterized in that: The center of the circular fire hole coincides with the center line of the slit fire hole.

7. The gas stove according to claim 2, characterized in that: On the outer ring fire cover, a plurality of circular fire holes are arranged at intervals along the circumference of one of the annular seam fire holes to form a ring of circular fire holes; A ring of the circular fire holes and a ring-shaped fire hole are alternately arranged.

8. The gas stove according to claim 2, characterized in that: On the outer ring fire cover, a plurality of circular fire holes are arranged at intervals along the circumference of one of the annular seam fire holes to form a ring of circular fire holes; The multiple rings of circular fire holes and the multiple annular seam fire holes are arranged alternately.

9. The gas stove according to claim 2, characterized in that: The axis of the circular fire hole is parallel to the axis of the outer ring fire cover.

10. The gas stove according to claim 2, characterized in that: On the outer ring fire cover, there are a plurality of annular fire holes and a plurality of circular fire holes; Wherein, at least one of the annular fire holes is located outside the multiple circular fire holes.

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