Gas stove

Abstract

The invention discloses a gas stove, relates to the technical field of stoves, and aims to solve the problem that the heat efficiency of a burner is affected due to the fact that fire holes of a fire cover are easy to block. The gas stove comprises a burner, an inner ring fire cover and a middle ring fire cover. Wherein a gas mixing chamber is formed in the furnace end, the inner ring fire cover is arranged on the furnace end in a covering mode, and the middle ring fire cover is arranged on the furnace end in a covering mode and located on the periphery of the inner ring fire cover. A first gap is formed between the middle ring fire cover and the inner ring fire cover. An opening in one end of the first gap is communicated with the gas mixing chamber. And at least one part of the first gap is inclined to the opening at the other end. And along the axis of the inner ring fire cover and in the direction far away from the furnace end, the inclined part of the first gap is gradually close to the axis of the inner ring fire cover and far away from the furnace end. In other words, at least the part, close to the outlet, of the first gap is obliquely arranged, so that falling sundries are not prone to directly falling into the first gap, and the situation that the fire holes are blocked is reduced. The gas stove provided by the invention is used for heating cookware so that a user can cook.

Description

Technical Field

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

[0002] A gas stove is a kitchen appliance that uses petroleum gas, manufactured gas, natural gas, or other gases as fuel for heating.

[0003] The main components of the combustion system in a gas stove include the injector tube, the injection device, the burner head, and the burner cap. The gas jet injected by the injection device enters the burner head through the injector tube, and the gas inside the burner head then flows out from the flame holes on the burner cap and is ignited to form a flame.

[0004] The burner holes on a burner cap are typically circular through holes, spaced apart. These circular holes are easily blocked by foreign objects, affecting the normal flow of gas and consequently reducing combustion efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a gas stove that solves the problem that the circular burner holes on the burner cap are easily blocked, affecting combustion efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This invention provides a gas stove, including a burner head, an inner ring burner cap, and a middle ring burner cap. The burner head forms a mixing chamber. The inner ring burner cap is disposed on the burner head, and the middle ring burner cap is disposed on the burner head, located around the inner ring burner cap. A first gap is formed between the middle ring burner cap and the inner ring burner cap, and the opening at one end of the first gap communicates with the mixing chamber. At least a portion of the first gap is inclined towards its opening at the other end. Along the axis of the inner ring burner cap, and away from the burner head, the inclined portion of the first gap gradually approaches the axis of the inner ring burner cap and moves away from the burner head.

[0008] A first gap is formed by the spaced arrangement between the inner and middle ring burner caps. At least a portion of the first gap is inclined towards its opening at the other end, along the axis of the inner ring burner cap and away from the burner head. The inclined portion of the first gap gradually approaches the axis of the inner ring burner cap and moves away from the burner head; that is, at least a portion of the first gap near the outlet extends inclined towards the center area of ​​the bottom of the pot. This prevents or reduces the fall of debris such as food residue into the first gap, thus reducing the likelihood of it becoming clogged. Furthermore, the first gap is formed by the spaced arrangement of the inner and middle ring burner caps, creating a continuous annular gap. Therefore, even if debris falls into the first gap, the combustion gas can flow out from both sides of the debris, preventing complete blockage. This solves the problem of burner caps easily becoming clogged and affecting combustion efficiency.

[0009] In some embodiments, the mixing chamber includes an inner ring mixing chamber and a middle ring mixing chamber, the middle ring mixing chamber being located around the inner ring mixing chamber, and one end of the first gap communicating with the inner ring mixing chamber. The gas stove also includes an outer ring burner cap, which is mounted on the burner head and located around the middle ring burner cap. A second gap is formed between the outer ring burner cap and the middle ring burner cap, and the opening at one end of the second gap communicating with the middle ring mixing chamber.

[0010] In some embodiments, the mixing chamber further includes an outer ring mixing chamber located around the middle ring mixing chamber. The outer ring burner cap has a third slit located around the second slit, with one end of the third slit communicating with the outer ring mixing chamber.

[0011] In some embodiments, the outer ring flame cap includes a first connecting portion, a second connecting portion, and at least one third connecting portion. The first connecting portion is annular and forms a second gap with the middle ring flame cap. The second connecting portion is annular and located around the first connecting portion, forming a third gap with the first connecting portion. The third connecting portion is located within the third gap and connects to both the second and first connecting portions; the first and second connecting portions are connected via the third connecting portion.

[0012] In some embodiments, the first connecting portion has a first protrusion on the side near the second connecting portion, and the first protrusion is annular. The second connecting portion has a second protrusion on the side near the first connecting portion, the second protrusion is annular, and is spaced apart from the first protrusion. The first and second protrusions form an opening of a third gap at the end away from the burner head on the side away from the burner head.

[0013] In some embodiments, the surface of the middle ring burner cap near the outer ring burner cap is a stepped surface, which forms at least a portion of the slit wall on one side of the second slit. Along the axis of the inner ring burner cap and away from the furnace head, the distance between the stepped surface and the surface of the outer ring burner cap near the middle ring burner cap decreases sequentially.

[0014] In some embodiments, the second gap includes a first sub-gap and a second sub-gap, wherein the first sub-gap is annular and one end communicates with the middle annular mixing chamber. The second sub-gap is annular, one end communicates with the first sub-gap, and the other end forms an opening. The extending directions of the first sub-gap and the extending directions of the second sub-gap are intersected.

[0015] In some embodiments, the first gap has an annular first gap wall and a second gap wall, the second gap wall being located around the first gap wall and spaced apart from it. Along the axis of the inner ring burner cap, and in a direction away from the burner head, the distance between the first gap wall and the second gap wall gradually increases.

[0016] In some embodiments, the width of the first sub-slit is greater than the width of the second sub-slit.

[0017] In some embodiments, the third slit has an annular third slit wall and a fourth slit wall, the fourth slit wall being located around the third slit wall and spaced apart from it. Along the axis of the inner ring burner cap, and away from the burner head, the distance between the third slit wall and the fourth slit wall gradually increases. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 One of the schematic diagrams of a gas stove provided in the embodiments of this application;

[0020] Figure 2 A second schematic diagram of a gas stove provided as an embodiment of this application;

[0021] Figure 3 The third schematic diagram of a gas stove provided as an embodiment of this application;

[0022] Figure 4 The fourth schematic diagram of a gas stove provided as an embodiment of this application;

[0023] Figure 5 One of the schematic diagrams of a stove head provided in an embodiment of this application;

[0024] Figure 6 A schematic diagram of the inner ring flame cap and the middle ring flame cap provided in the embodiments of this application;

[0025] Figure 7 A second schematic diagram of a burner head provided in an embodiment of this application;

[0026] Figure 8 The third schematic diagram of the burner head provided in the embodiments of this application;

[0027] Figure 9 Fourth schematic diagram of the burner head provided in the embodiments of this application;

[0028] Figure 10 One of the schematic diagrams of the outer ring flame cap provided in the embodiments of this application;

[0029] Figure 11 Fifth schematic diagram of a stove head provided for an embodiment of this application;

[0030] Figure 12 A schematic diagram of a stove head provided for an embodiment of this application;

[0031] Figure 13 A second schematic diagram of the outer ring flame cap provided in an embodiment of this application;

[0032] Figure 14 The third schematic diagram of the outer ring flame cap provided in the embodiments of this application;

[0033] Figure 15 Fourth schematic diagram of the outer ring flame cap provided in the embodiments of this application;

[0034] Figure 16 Fifth schematic diagram of the outer ring flame cap provided in the embodiments of this application;

[0035] Figure 17 Sixth schematic diagram of the outer ring flame cap provided for an embodiment of this application;

[0036] Figure 18 One of the schematic diagrams of the central ring flame cover provided in the embodiments of this application;

[0037] Figure 19 A second schematic diagram of the central ring flame cover provided in an embodiment of this application;

[0038] Figure 20 Schematic diagram seven of the outer ring flame caps provided in the embodiments of this application;

[0039] Figure 21 A schematic diagram of the first and second gap walls provided for embodiments of this application;

[0040] Figure 22 The fifth schematic diagram of the gas stove provided in the embodiments of this application.

[0041] Figure label:

[0042] 100-Gas stove; 11-Bottom shell; 10-Mounting cavity; 12-Panel; 120-Allowing hole; 110-Air supply hole; 101-Ejector tube; 102-Nozzle; 1201-Nozzle fixing device;

[0043] 2-Burnhead; 20-Mixing Chamber; 201-First Gap; 2011-First Gap Wall; 2012-Second Gap Wall; 202-Second Gap; 203-Third Gap; 2031-Third Gap Wall; 2032-Fourth Gap Wall; 2001-Inner Ring Mixing Chamber; 2002-Middle Ring Mixing Chamber; 2003-Outer Ring Mixing Chamber; 211-First Support; 212-Second Support; 2000-Secondary Air Supply Channel;

[0044] 31-Inner ring flame cap; 32-Middle ring flame cap; 321-Gas guide; 3200-Stepped surface; 33-Outer ring flame cap; 331-First connecting part; 332-Second connecting part; 333-Third connecting part; 3330-Ventilation hole; 3310-First protrusion; 3320-Second protrusion; 3301-First limiting protrusion; 3201-Abutting part; 3202-First limiting groove; 3203-Second limiting protrusion; 3101-Second limiting groove;

[0045] 41-Main switch valve; 42-Inner ring proportional valve; 43-Middle ring switch valve; 44-Outer ring switch valve;

[0046] 51 - Gas supply pipeline; 52 - Gas transmission pipeline. Detailed Implementation

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or relative positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Unless otherwise specified, the above-described orientation can be flexibly set in practical applications, provided that the relative positional relationship shown in the accompanying drawings is satisfied.

[0049] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0050] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "communication" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a direct connection or an indirect connection through an intermediate medium, or a communication between the internal components of two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0051] In embodiments of the invention, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, article, or apparatus that includes that element.

[0052] In embodiments of the present invention, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" or "for example" in embodiments of the present invention should not be construed as being more preferred or advantageous than other embodiments or designs. Rather, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0053] This application provides a gas stove, such as Figure 1 As shown, Figure 1 This is a schematic diagram of a gas stove 100 provided in this application. The gas stove 100 provided in this application may include a bottom shell 11 and a panel 12. The bottom shell 11 forms a mounting cavity 10 with an opening, and the opening communicates with the mounting cavity 10 so that relevant components of the gas stove 100 can be installed in the mounting cavity 10 of the bottom shell 11. The bottom shell 11 provides support and protection for the relevant components installed therein, ensuring that the gas stove 100 can operate normally.

[0054] See also Figure 1 The gas stove 100 provided in this application may further include a panel 12. The panel 12 covers the opening of the bottom shell 11 and is used to seal the mounting cavity 10 of the bottom shell 11. This is to prevent debris from falling into the mounting cavity 10 through the opening of the bottom shell 11, thereby preventing damage to the relevant components installed in the mounting cavity 10 and ensuring that the gas stove 100 can work normally.

[0055] See Figure 2The gas stove 100 provided in this application also includes a burner head 2, which forms a mixing chamber. The burner head 2 is disposed in the mounting cavity 10 of the bottom shell 11. Gas and primary air can be mixed in a certain manner in the mixing chamber of the burner head 2.

[0056] In addition, in order to install the burner head 2 in the mounting cavity 10 of the bottom shell 11, the gas stove 100 also includes a support assembly, which is disposed in the mounting cavity 10 of the bottom shell 11 and is used to support the burner head 2.

[0057] like Figure 2 As shown, the support assembly includes a first support member 211 and a second support member 212. The first support member 211 is disposed on the side of the burner head 2 near the bottom shell 11. The first support member 211 forms a limiting groove, and the burner head 2 is disposed within the limiting groove of the first support member 211.

[0058] like Figure 3 As shown, the second support member 212 is disposed on the side of the first support member 211 near the bottom shell 11. The second support member 212 is used to support the first support member 211. There is a gap between the first support member 211, the burner head 2, and the bottom shell 11 to allow air circulation within the bottom shell 11, which is beneficial for the ejector tube to eject primary air. In addition, to supplement air, a plurality of air replenishment holes 110 are provided on the bottom shell 11, so that air can enter the mounting cavity 10 through the air replenishment holes 110.

[0059] In addition, such as Figure 5 As shown, a secondary air supply channel 2000 is also formed in the center of the burner head 2. The secondary air supply channel 2000 allows the air that enters the mounting cavity 10 through the air supply hole 110 to flow further into the central area of ​​the burner head 2 through the secondary air supply channel to provide air for flame combustion, so that the flame can burn fully.

[0060] like Figure 4 As shown, in order to inject gas into the mixing chamber 20 of the burner head 2, the gas stove 100 also includes an injector tube 101 and a nozzle 102. One end of the injector tube 101 is connected to the burner head 2, and the other end is positioned opposite the nozzle 102, so that the gas jet ejected from the nozzle 102 can enter the injector tube 101 and then enter the burner head 2 through the injector tube 101.

[0061] In order to install the nozzle 102, the gas stove 100 also includes a nozzle fixing device 1021, which is connected to the first support member 211. Furthermore, the nozzle 102 is connected to the nozzle fixing device 1021, and the nozzle 102 is positioned opposite to the ejector tube 101 through the nozzle fixing device 1021.

[0062] Typically, the gas stove 100 also includes a burner cap assembly covering the burner head 2. In related technologies, the burner cap assembly usually has flame outlets that communicate with the mixing chamber of the burner head 2. The primary air and gas that have been mixed in the mixing chamber of the burner head 2 can flow out through the flame outlets on the burner cap assembly and be ignited to form a flame, thereby heating the bottom of the cookware for the user to cook.

[0063] In related technologies, the flame outlet holes on the burner assembly are typically circular. However, the manufacturing process for circular flame outlets is complex and costly. Furthermore, circular flame outlets are usually small in diameter, making them prone to blockage by foreign objects, which can impede the normal flow of gas and consequently reduce combustion efficiency.

[0064] To solve the above problems, such as Figure 6 As shown, the gas stove 100 provided in this application embodiment includes an inner ring burner cap 31 and a middle ring burner cap 32, and the inner ring burner cap 31 and the middle ring burner cap 32 form a burner cap assembly.

[0065] like Figure 7 As shown, the inner ring burner cap 31 is mounted on the burner head 2. The middle ring burner cap 32 is mounted on the burner head 2, and the middle ring burner cap 32 is located outside the inner ring burner cap 31. In this case, as... Figure 5 As shown, a first gap 201 is formed between the middle ring burner cap 32 and the inner ring burner cap 31, and the opening at one end of the first gap 201 is connected to the mixing chamber 20 of the burner head 2. This first gap 201 can be a continuous annular gap.

[0066] See also Figure 8 At least a portion of the first slit 201 is inclined toward the opening at the other end. Along the axis of the inner ring burner cap 31 and away from the burner head 2, the inclined portion of the first slit 201 gradually approaches the axis of the inner ring burner cap 31 and moves away from the burner head 2.

[0067] In this situation, when the mixture of fuel gas and primary air in the mixing chamber 20 of the burner head 2 flows into the first gap 201 from the mixing chamber 20, the mixture of fuel gas and primary air will flow along the extension direction of the first gap 201 and flow out from the first gap 201 to be ignited to form a flame. That is, the first gap 201 formed between the inner ring burner cap 31 and the middle ring burner cap 32 serves as a flame outlet.

[0068] The circular flame hole is replaced by an annular first gap 201 formed between the inner ring flame cap 31 and the outer ring flame cap 32. The annular first gap 201 formed between the inner ring flame cap 31 and the outer ring flame cap 32 is inclined rather than vertical.

[0069] In this way, food residue that falls during cooking is less likely to fall into the first gap 201. Even if residue does fall into the first gap 201, the mixture of gas and primary air can continue to flow out from both sides of the residue without being blocked. Furthermore, the high-temperature flame around the residue can ignite it, which also helps to solve the problem of residue blockage to some extent. However, if the circular burner hole is blocked by the fallen residue, it can no longer emit gas normally, and the blocked circular burner hole cannot continue to produce a flame, resulting in a decrease in thermal efficiency.

[0070] In addition, circular flame holes are prone to deformation when exposed to high temperatures for a long time, which can cause the diameter of the circular flame holes to become smaller and may lead to flame instability.

[0071] Furthermore, the first gap 201 is an annular gap formed between the inner ring flame cap 31 and the middle ring flame cap 32. The flames formed at the first gap 201 are interconnected and can stabilize each other. The circular flame holes are spaced apart, and adjacent flame holes are independent of each other and do not have a mutual flame stabilizing effect. Therefore, the flame stability of the annular flame holes formed by the first gap 201 is relatively good.

[0072] Based on this, the annular flame hole formed by the first slit 201 can achieve a greater thermal intensity. This is because, within a certain range, the smaller the area of ​​a single circular flame hole, the higher its thermal intensity. However, as the area of ​​the circular flame hole decreases, the possibility of flame lift-off increases. When the annular flame hole formed by the first slit 201 increases thermal intensity by reducing the flame hole area, the flame at the annular flame hole is a continuous, interconnected ring flame, which can stabilize the flame and reduce the occurrence of flame lift-off.

[0073] like Figure 9 As shown, during the process of the mixture of gas and primary air flowing from the mixing chamber 20 to the first slit 201 and out of the first slit 201, the flow direction of the mixture of gas and primary air is upward from the mixing chamber 20 along the axis of the burner head 2, entering the first slit 201 and continuing to flow along the extension direction of the first slit 201. Furthermore, at least a portion of the first slit 201 is inclined to the opening at the other end of the first slit 201 and is away from the burner head 2.

[0074] In this way, the mixed gas flowing out of the first gap 201 can flow toward the center of the bottom of the pot, or a circular area within a certain range near the center of the bottom of the pot, and be ignited to form a flame.

[0075] During this process, the flow direction of the gas mixture of gas and primary air is upward from the mixing chamber 20 along the axis of the burner head 2, enters the first gap 201 and continues to flow along the extension direction of the first gap 201, and because at least a part of the first gap 201 is inclined to the opening at the other end of the first gap 201 and away from the burner head 2.

[0076] In this way, the mixed gas flowing out of the first slit 201 can flow towards the center of the bottom of the cookware, or a circular area within a certain range near the center of the bottom of the cookware, and be ignited to form a flame. In this case, when the flame at the first slit 201 heats the bottom of the cookware, the heat of the flame is conducted from the center area of ​​the bottom of the cookware to the area away from the center. Even though there is heat loss, during the process of heat loss from the center of the bottom of the cookware outward, heat will also radiate to the area of ​​the bottom of the cookware away from the center, improving the utilization rate of the flame's heat.

[0077] In this case, such as Figure 1 As shown, the panel 12 is also provided with a clearance hole 120. The burner head 2 is positioned opposite to the clearance hole 120 on the panel 12. This allows the burner head 2, as well as the inner ring burner cap 31 and the middle ring burner cap 32 covering the burner head 2, to be located within the opening range of the clearance hole 120.

[0078] In this way, when the mixed gas in the burner 2 flows out from the first gap 201 and is ignited to produce a flame, the panel 12 will not block the flame produced by the burning mixed gas, ensuring that the gas stove 100 works normally and heats the bottom of the pot so that the user can cook.

[0079] As described above, the gas stove 100 provided in this application embodiment may include a bottom shell 11, a panel 12, a burner head 2, an inner ring burner cap 31, and a middle ring burner cap 32. The burner head 2 can be installed in the mounting cavity 10 of the bottom shell 11, and then the mounting cavity 10 of the bottom shell 11 is sealed by the panel 12 to protect the burner head 2, the inner ring burner cap 31, the middle ring burner cap 32, and other components, ensuring that the burner head 2 and other components are not damaged, thereby ensuring that the gas stove 100 can work normally.

[0080] The following description of burner head 2, with reference to the accompanying drawings, will provide further details. Figure 8 The mixing chamber 20 of the burner head 2 includes an inner ring mixing chamber 2001, which is connected to one end of the first gap 201.

[0081] In this way, the mixed gas (a mixture of fuel gas and primary air) located in the inner ring mixing chamber 2001 flows out from the first gap 201 connected thereto and is ignited to form an inner ring flame.

[0082] like Figure 8 As shown, the mixing chamber 20 of the burner head 2 also includes a middle ring mixing chamber 2002, which is located outside the inner ring mixing chamber 2001. Based on this, as... Figure 10 As shown, the gas stove 100 provided in this application also includes an outer ring burner cap. For example... Figure 11 As shown, the outer ring burner cap 33 is mounted on the burner head 2, and the outer ring burner cap 33 is located outside the middle ring burner cap 32. For example... Figure 12 As shown, a second gap 202 is formed between the outer ring burner cap 33 and the middle ring burner cap 32, and the opening at one end of the second gap 202 is connected to the middle ring mixing chamber 2002.

[0083] In this way, the mixed gas located in the central ring mixing chamber 2002 flows out from the second slit 202 connected to it and is ignited to form a central ring flame. (Continue to see...) Figure 8 The mixing chamber 20 of the burner head 2 also includes an outer ring mixing chamber 2003. The outer ring mixing chamber 2003 is located outside the middle ring mixing chamber 2002. For example... Figure 12 As shown, the outer ring flame cap 33 has a third slit 203, one end of which is connected to the outer ring mixing chamber 2003. The third slit 203 is located outside the second slit 202.

[0084] In this way, the mixed gas located in the outer ring mixing chamber 2002 flows out from the third slit 203 connected to it and is ignited to form an outer ring flame.

[0085] In some embodiments of this application, such as Figure 10 As shown, the middle ring burner cap 32 has an abutment portion 3201 that can abut against the outer ring burner cap 33. The abutment portion 3201 is located in the second gap 202. In this way, when the middle ring burner cap 32 and the outer ring burner cap 33 are placed on the burner head 2, the abutment portion 3201 of the middle ring burner cap 32 can abut against the outer ring burner cap 33, preventing displacement between the middle ring burner cap 32 and the outer ring burner cap 33. This ensures the stability of the second gap 202 formed between the middle ring burner cap 32 and the outer ring burner cap 33, and ensures stable combustion of the flame formed at the second gap 202.

[0086] The number of the aforementioned abutment portions 3201 can be multiple, for example, three. The three abutment portions 3201 can be arranged at equal intervals or unequal intervals. As long as the abutment portions 3201 can abut against the outer ring flame cap 33, and displacement between the middle ring flame cap 32 and the outer ring flame cap 33 is prevented, it is acceptable.

[0087] In some embodiments of this application, such as Figure 10As shown, a first limiting groove 3202 is formed on the middle ring burner cap 32, and a first limiting protrusion 3301 is formed on the surface of the outer ring burner cap 33 near the middle ring burner cap 32. The first limiting protrusion 3301 can be disposed in the first limiting groove 3202. When the middle ring burner cap 32 and the outer ring burner cap 33 are placed on the burner head 2, the abutment between the first limiting protrusion 3301 and the first limiting groove 3202 can prevent relative rotation between the middle ring burner cap 32 and the outer ring burner cap 33, and further ensure the stability of the second gap 202 formed between the middle ring burner cap 32 and the outer ring burner cap 33.

[0088] In some embodiments of this application, such as Figure 10 As shown, a second limiting protrusion 3203 is formed on the surface of the middle ring burner cap 32 near the inner ring burner cap 31, and a second limiting groove 3101 is formed on the surface of the inner ring burner cap 31 near the middle ring burner cap. The second limiting protrusion 3203 can be disposed in the second limiting groove 3101. When the inner ring burner cap 31 and the middle ring burner cap 32 are placed on the burner head 2, the second limiting protrusion 3203 can abut against the second limiting groove 3101, thereby preventing relative rotation between the middle ring burner cap 32 and the inner ring burner cap 31, and further ensuring the stability of the first gap 201 formed between the middle ring burner cap 32 and the inner ring burner cap 31. As can be seen from the above, a second gap 202 is formed between the outer ring burner cap 33 and the middle ring burner cap 32, and the outer ring burner cap 33 also has a third gap 203. The outer ring burner cap 33 will be further described below with reference to the accompanying drawings.

[0089] like Figure 13 As shown, the outer ring flame cap 33 includes a first connecting portion 331. This first connecting portion 331 is annular, and a second gap 202 is formed between the first connecting portion 332 and the middle ring flame cap 33. Figure 12 ).

[0090] The outer ring fire cap 33 also includes a second connecting part 332, which is annular and located around the first connecting part 331. The third gap 203 is formed between the first connecting part 331 and the second connecting part 332.

[0091] Based on this, such as Figure 13 As shown, the outer ring flame cap 33 also includes at least one third connecting portion 333, which is disposed within the third gap 203 formed by the first connecting portion 331 and the second connecting portion 332. The third connecting portion 333 is connected to the second connecting portion 332 and the first connecting portion 331, and the first connecting portion 331 and the second connecting portion 332 are connected through the third connecting portion 333.

[0092] In this way, the first connecting portion 331 and the second connecting portion 332, which are spaced apart, are connected by the third connecting portion 333, so that a third gap 203 is formed between the first connecting portion 331 and the second connecting portion 332.

[0093] In some embodiments, such as Figure 14 As shown, the number of the aforementioned third connecting portions 333 can be three. The three third connecting portions 333 are arranged at equal or unequal intervals within the third gap 203 formed by the first connecting portion 331 and the second connecting portion 332, and both ends of each third connecting portion 333 are connected to the first connecting portion 331 and the second connecting portion 332, respectively. This connects the first connecting portion 331 and the second connecting portion 332, forming the third gap 203 between them.

[0094] For example Figure 15 As shown, in some embodiments, the number of third connecting portions 333 can also be six. The six third connecting portions 333 can be equally (or unequally) arranged in the third gap 203 formed by the first connecting portion 331 and the second connecting portion 332, and both ends of each third connecting portion 333 are respectively connected to the first connecting portion 331 and the second connecting portion 332.

[0095] The aforementioned third connecting part 333 can be as follows: Figure 15 The fan-shaped annular portion shown can also be columnar in some embodiments. When the third connecting portion 333 is columnar, compared to the fan-shaped third connecting portion 333, the columnar third connecting portion 333 occupies a smaller area of ​​the third gap 203, and has a smaller impact on the flow of the mixed gas.

[0096] Understandably, as the number of third connecting parts 333 increases, the connection between the first connecting part 331 and the second connecting part 332 becomes more secure. However, as the number of third connecting parts 333 increases, the area occupied by the third connecting parts 333 in the third gap 203 also increases, affecting the efficiency of the mixed gas flowing out of the outer ring mixing chamber 2003 through the third gap 203, thereby affecting the thermal efficiency of the gas stove.

[0097] In this case, to reduce the impact of the third connection 333 on the flow of the mixed gas, a vent hole 3330 can be provided on the third connection 333. The following explanation will be based on the example of the third connection 333 being fan-shaped.

[0098] like Figure 16As shown, a plurality of vent holes 3330 are provided on the third connecting portion 333, for example, three vent holes 3330 are provided at equal intervals on the third connecting portion 333, and the vent holes 3330 penetrate the third connecting portion 333. The two ends of the vent holes 3330 are respectively connected to the outer ring mixing chamber 2003 and the third gap 203. In this way, when the mixed gas in the outer ring mixing chamber 2003 flows through the third connecting portion 333 located in the third gap 203, it can flow into the third gap 203 through the vent holes 3330 provided on the third connecting portion 333, thereby reducing the resistance of the third connecting portion 333 to the flow of the mixed gas, and making the mixed gas flow from the outer ring mixing chamber 2003 to the third gap 203 more smoothly.

[0099] In addition, the aforementioned vent 3330 can also ensure that the flame flowing through the third connecting part 333 is not separated, and the vent 3330 can play a role in flame transmission, thereby ensuring the flame is continuous and forming a complete annular flame.

[0100] like Figure 17 As shown, the first connecting portion 331 has a first protrusion 3310 on the side surface near the second connecting portion 332, and the first protrusion 3310 is annular.

[0101] like Figure 17 As shown, the second connecting portion 332 has a second protrusion 3320 on the side near the first connecting portion 331. The second protrusion 3320 is annular and is spaced apart from the first protrusion 3310. Based on this, the first protrusion 3310 and the second protrusion 3320 form an opening of the third gap 203 at the end away from the burner head 2 on the side away from the burner head 2.

[0102] In this case, when the mixed gas in the outer ring mixing chamber 2003 flows into the third gap 203 connected to it, the mixed gas will be blocked by the first protrusion 3310 and the second protrusion 3320 due to the presence of the first protrusion 3310 and the second protrusion 3320. This can prevent the mixed gas from flowing out of the third gap 203 at too fast speed, which would cause flame lift-off, and thus ensure that the flame combustion remains stable.

[0103] like Figure 18 As shown, the surface of the middle ring burner cap 32 near the outer ring burner cap 33 is a stepped surface 3200, which forms at least a portion of the gap wall on one side of the second gap 202. Along the axis of the inner ring burner cap 31, and in a direction away from the burner head 2, the distance between the stepped surface 3200 and the surface of the outer ring burner cap 33 near the middle ring burner cap 32 decreases sequentially. Figure 12 ).

[0104] In this way, as the mixed gas in the middle ring mixing chamber 2002 flows from the middle ring mixing chamber 2002 to the second gap 202, the mixed gas will come into contact with the stepped surface 3200 of the middle ring flame cap 32. The stepped surface 3200 can increase the resistance when the mixed gas flows, so that the speed of the mixed gas flowing out of the second gap 202 will not be too fast, thereby reducing the possibility of flame lift-off.

[0105] It should be noted that, along the axis of the inner ring burner cap 31 and away from the burner head 2, the distance between the stepped surface 3200 and the surface of the outer ring burner cap 33 near the middle ring burner cap 32 decreases sequentially. This ensures that the mixed gas flows from the middle ring mixing chamber 2002 to the second gap 202, such as... Figure 19 As shown, it contacts multiple raised surfaces formed on the stepped surface 3200 in sequence to ensure that the stepped surface 3200 can effectively slow down the flow, so that the flow velocity of the mixed gas will not be too fast when it flows out from the second gap.

[0106] Furthermore, when the gas mixture collides with the stepped surface 3200 of the inner ring burner cap 32, the direction of gas evaporation changes. For example, the gas mixture flowing away from the bottom shell 11 along the axis of the inner ring burner cap 31 may flow away from the bottom shell 11 and away from the axis of the inner ring burner cap 31 when it collides with the stepped surface 3200, and come into contact with the gas mixture flowing upward along the axis of the inner ring burner cap 31. This allows the fuel gas in the gas mixture to mix more thoroughly with the primary air, which is beneficial to the combustion of the fuel gas.

[0107] like Figure 12 As shown, the second gap 202 includes a first sub-gap 2021, which is annular, and one end of the first sub-gap 2021 is connected to the middle annular mixing chamber 2002. In this way, the mixed gas in the middle annular mixing chamber 2002 can continue to flow outward through the first sub-gap 2021.

[0108] like Figure 12 As shown, the second slit 202 includes a second sub-slit 2022, which is annular. One end of the second sub-slit 2022 is connected to the first sub-slit 2021, and the other end of the second sub-slit 2022 forms an opening. Thus, the mixed gas flowing through the first sub-slit 2021 can flow to the second sub-slit 2022, pass through the second sub-slit 2022, and then exit from the opening formed at the other end of the second sub-slit 2022, where it is ignited to form a flame.

[0109] Based on this, the extension direction of the first sub-gap 2021 is intersected with the extension direction of the second sub-gap 2022.

[0110] In this way, as the mixed gas in the central ring mixing chamber 2002 flows out, it flows from the central ring mixing chamber 2002 into the first sub-slit 2021 of the second slit 202, and flows along the extension direction of the first sub-slit 2021. When the mixed gas flows from the first sub-slit 2021 into the second sub-slit 2022, the extension direction of the second sub-slit 2022 changes because it intersects with the extension direction of the first sub-slit 2021. Therefore, the mixed gas flows along the extension direction of the first sub-slit 2021. When the mixed gas flows through the second sub-slit 2022, it collides with the slit wall of the second sub-slit 2022, which is beneficial for the thorough mixing of the combustion gas and primary air in the mixed gas. At the same time, the speed of the mixed gas also slows down, making the flame combustion more stable.

[0111] like Figure 20 As shown, in some embodiments, a gas guiding portion 321 is formed on the surface of the middle ring burner cap 32 near the inner ring burner cap 31. The gas guiding portion 321 is annular. This gas guiding portion 321 is located around the inner ring burner cap 31 and is spaced apart from the inner ring burner cap 31. The gas guiding portion 321 near the side wall of the inner ring burner cap 31 forms at least a portion of the slit wall of the second sub-slit 2022. An outlet at the other end of the second sub-slit 2022 is formed between the gas guiding portion 321 and the inner ring burner cap 31.

[0112] Thus, as the mixed gas flows from the first sub-slit 2021 to the second sub-slit 2022, it collides with the gas guide 321, allowing it to flow along the extension direction of the gas guide 321 and guiding the gas outlet direction. Furthermore, the gas guide 321 further prevents the mixed gas from flowing out at a high speed, ensuring a stable outflow and ignition of the mixed gas, forming a stable flame.

[0113] like Figure 21 As shown, the first gap 201 has an annular first gap wall 2011 and a second gap wall 2012. The second gap wall 2012 is located around the first gap wall 2011, and the second gap wall 2012 is spaced apart from the first gap wall 2011. The distance between the first gap wall 2011 and the second gap wall 2012 gradually increases along the axis of the inner ring burner cover 31 and away from the burner head 2.

[0114] In some embodiments, the angle between the first slit wall 2011 and the axis of the inner ring flame cap 31 is 75°-85°, and the angle between the second slit wall 2012 and the axis of the inner ring flame cap 31 is 30°-60°.

[0115] The first slit 201 is shaped like a funnel, with the opening gradually widening. When the mixed gas flows out of the first slit 201, it first passes through the smaller part of the opening. Fluid passes through a smaller space at a higher velocity. Therefore, the combustion gas can pass through quickly at this point. As the mixed gas continues to flow, the flow velocity decreases as the funnel-shaped opening of the first slit 201 gradually widens. This facilitates more complete mixing of the combustion gas with the secondary air, ensuring complete combustion and preventing backfire.

[0116] In some embodiments, the width of the first sub-slit 2021 is greater than the width of the second sub-slit 2022. Thus, the mixed gas first passes through the first sub-slit 2021 and then through the second sub-slit 2022. As the mixed gas flows through the second sub-slit 202, the diameter of its flow path gradually decreases, thereby reducing the throttling effect on the mixed gas and minimizing energy loss.

[0117] like Figure 19 As shown, the third gap 203 has an annular third gap wall 2031 and a fourth gap wall 2032. The fourth gap wall 2032 is located around the third gap wall 2031 and is spaced apart from the third gap wall 2031. Along the axis of the inner ring burner cover 31 and away from the burner head 2, the distance between the third gap wall 2031 and the fourth gap wall 2032 gradually increases.

[0118] In some embodiments, the angle between the third slit wall 2031 and the axis of the inner ring flame cap 31 is 20°-30°, and the angle between the fourth slit wall 2032 and the axis of the inner ring flame cap 31 is 5°-15°.

[0119] Thus, the third slit 203 is shaped like a gradually widening funnel. When the mixed gas flows out of the third slit 203, it first flows through the part with the smaller opening. At this time, the gas can pass through at a relatively fast speed. As the mixed gas continues to flow, as the funnel-shaped opening of the third slit 203 gradually widens, the flow velocity of the mixed gas will decrease due to the larger opening. This is conducive to more complete mixing of the gas with the secondary air, ensuring complete combustion of the gas and preventing backfire.

[0120] like Figure 22 As shown, the gas stove 100 provided in this application also includes a main switch valve 41 and valves for controlling the flames of each ring. The main switch valve 41 is used to control the gas flow of the gas stove 100 as a whole.

[0121] For example Figure 22 As shown, the gas stove 100 also includes an inner ring channel proportional valve 42, which is used to control the on / off of the gas in the inner ring mixing chamber 2001.

[0122] The gas stove 100 also includes a central ring channel switch valve 43, which is used to control the on / off of gas in the central ring mixing chamber 2002.

[0123] The gas stove 100 also includes an outer ring channel switch valve 44, which is used to control the on / off of gas in the outer ring mixing chamber 2003.

[0124] In addition, to supply gas, the gas stove 100 also includes a gas supply pipeline 51 and a gas transmission pipeline 52. One end of the gas supply pipeline 51 is connected to the gas source, and the other end is connected to the main switch valve 41. One end of the gas transmission pipeline 52 is connected to the main switch valve 41, and the other end is connected to the inner ring channel proportional valve 42, the middle ring channel switch valve 43, and the outer ring channel switch valve 44.

[0125] In this situation, when both the main switch valve 41 and the inner ring channel proportional valve 42 are open, the gas is injected into the ejector tube connected to the inner ring mixing chamber 2001 through a nozzle connected to the inner ring channel proportional valve 42. In this case, the fuel in the inner ring mixing chamber 2001 flows out from the first gap 201 and is ignited to form a flame. The inner ring ignition is open, and the position of the inner ring ignition is controlled by the inner ring channel proportional valve 42.

[0126] When the main switch valve 41, the inner ring channel proportional valve 42, and the middle ring channel switch valve 43 are opened, the gas is injected into the injector tube connected to the middle ring mixing chamber 2002 through a nozzle connected to the middle ring channel switch valve 43, based on the opening of the inner ring annular ignition. In this case, the fuel in the middle ring mixing chamber 2002 flows out from the second gap 202 and is ignited to form a flame, the middle ring annular ignition is opened, and a two-ring annular flame is formed. The size of the two ring flames is controlled by the inner ring channel proportional valve 42.

[0127] When the main switch valve 41, the inner ring channel proportional valve 42, the middle ring channel switch valve 43, and the outer ring channel switch valve 44 are opened, the gas is also injected into the ejector tube connected to the outer ring mixing chamber 2003 through a nozzle connected to the outer ring channel switch valve 44. In this case, the fuel in the outer ring mixing chamber 2003 flows out from the third gap 203 and is ignited to form a flame, and the outer ring slit flame is opened. At this time, a three-ring slit flame is formed, and the level of the three-ring flame is controlled by the inner ring channel proportional valve 42.

[0128] When the main switch valve 41 is closed, the gas stove 100 is in the off state and does not ignite. All of the above valve bodies are normally closed valve bodies.

[0129] In some embodiments, the inner ring flame has three settings (levels one to three), the middle ring flame has three settings (levels four to six), and the outer ring flame has four settings (levels seven to ten). Level one is set to a low-temperature cooking setting with a heat load of approximately 300W, and level ten is set to a high-heat stir-fry setting with a heat load of approximately 5200W. When the setting is level nine, the heat load is approximately 4200W. In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0130] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A gas stove, characterized in that, The gas stove includes: The burner head has a mixing chamber. An inner ring fire cover is placed on the furnace head; A middle ring flame cover is installed on the burner head and is located outside the inner ring flame cover; a first gap is formed between the middle ring flame cover and the inner ring flame cover; the opening at one end of the first gap communicates with the mixing chamber; Wherein, at least a portion of the first gap is inclined to the opening at the other end; along the axis of the inner ring burner and away from the burner head, the inclined portion of the first gap gradually approaches the axis of the inner ring burner and moves away from the burner head.

2. The gas stove according to claim 1, characterized in that, The mixing chamber includes: An inner ring mixing chamber, one end of the first gap being connected to the inner ring mixing chamber; The middle ring mixing chamber is located outside the inner ring mixing chamber; The gas stove also includes: An outer ring flame cap is placed on the burner head and located outside the middle ring flame cap; a second gap is formed between the outer ring flame cap and the middle ring flame cap, and the opening at one end of the second gap communicates with the middle ring mixing chamber.

3. The gas stove according to claim 2, characterized in that, The mixing chamber also includes: An outer ring mixing chamber, which is located around the middle ring mixing chamber; The outer ring flame cap has a third gap; the third gap is located outside the second gap; one end of the third gap is connected to the outer ring mixing chamber.

4. The gas stove according to claim 3, characterized in that, The outer ring fire cap includes: The first connecting part is annular and forms a second gap with the middle ring fire cap; A second connecting portion, which is annular, is located around the first connecting portion and forms the third gap between it and the first connecting portion; and... At least one third connecting portion is located within the third gap and is connected to the second connecting portion and the first connecting portion, wherein the first connecting portion and the second connecting portion are connected through the third connecting portion.

5. The gas stove according to claim 4, characterized in that, The first connecting portion has a first protrusion on the side near the second connecting portion, and the first protrusion is annular; The second connecting portion has a second protrusion on the side near the first connecting portion. The second protrusion is annular and is spaced apart from the first protrusion. The first protrusion and the second protrusion form the opening of the third slit at the end away from the burner head on the side away from the burner head.

6. The gas stove according to claim 2, characterized in that, The surface of the middle ring burner cap near the outer ring burner cap is a stepped surface; the stepped surface forms at least a portion of the gap wall on one side of the second gap; along the axis of the inner ring burner cap and away from the furnace head, the distance between the stepped surface and the surface of the outer ring burner cap near the middle ring burner cap decreases sequentially.

7. The gas stove according to claim 2, characterized in that, The second gap includes: The first sub-slit is annular, with one end connected to the middle annular mixing chamber; and... The second sub-slit is annular, with one end connected to the first sub-slit and the other end forming an opening; The extension direction of the first sub-gap intersects with the extension direction of the second sub-gap.

8. The gas stove according to claim 1, characterized in that, The first gap has an annular first gap wall and a second gap wall; the second gap wall is located around the first gap wall and is spaced apart from the first gap wall. Along the axis of the inner ring burner cap, and away from the burner head, the distance between the first slit wall and the second slit wall gradually increases.

9. The gas stove according to claim 7, characterized in that, The width of the first sub-gap is greater than the width of the second sub-gap.

10. The gas stove according to claim 3, characterized in that, The third gap has an annular third gap wall and a fourth gap wall; the fourth gap wall is located outside the third gap wall and is spaced apart from the third gap wall. Along the axis of the inner ring burner cap, and away from the furnace head, the distance between the third slit wall and the fourth slit wall gradually increases.

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