Burner assembly and gas stove

Abstract

The utility model discloses a furnace end assembly and a gas stove, belongs to the technical field of stoves, and is designed for solving the problems of fire leakage and the like caused by the fact that an existing copper core is not placed in place. The utility model discloses a furnace end assembly which comprises a furnace end body. And the copper core is located above the furnace end main body, and the copper core is detachably connected to the furnace end main body through a connecting piece, so that relative movement between the copper core and the furnace end main body in the axial direction is avoided. According to the furnace end assembly and the gas stove disclosed by the utility model, the copper core is detachably connected to the furnace end main body through the connecting piece, so that the copper core and the furnace end main body can be prevented from relatively moving in the axial direction, the problem of fire leakage caused by the fact that the copper core is not placed in place after being taken is solved, and the use experience is good. The main reason that the copper core and the furnace end main body are separately processed is that the processing difficulty is reduced, and a user does not need to take down the copper core from the furnace end main body in normal use, so that the normal use of the gas stove cannot be influenced by connecting the copper core and the furnace end main body together, and the use experience is good.

Description

Technical Field

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

[0002] A gas stove can obtain heat by burning combustible gases such as natural gas and use the heat for cooking. The gas stove mainly includes a burner head, a copper core and a burner cap. The copper core in the shape of a round sheet is arranged at the center of the burner head, and the annular burner cap is arranged above the burner head and sleeved outside the copper core. In order to reduce the processing difficulty, the existing burner head, copper core and burner cap are processed separately. During installation, the bottom edge of the copper core is penetrated or sleeved and connected to the pipe at the center of the burner head, and the pipe can prevent the copper core from moving radially; without external force to lift the copper core, the self-weight of the copper core enables it to stably fall on the top of the pipe.

[0003] When the existing gas stove is in use, a fire leakage phenomenon may occur. In severe cases, it may cause deformation of multiple components on the gas stove, rupture of the gas stove panel, and burning of the cookware, etc., which has potential safety hazards and poor user experience.

[0004] The main reasons for the occurrence of the fire leakage phenomenon include: the copper core and / or the burner cap are not placed in place, resulting in large gaps between the copper core and the burner head, and between the burner cap and the burner head, causing fire leakage. There is a lack of positioning structures on the existing copper core and burner cap. The pipe can only prevent the copper core from moving radially and cannot accurately limit the copper core axially. Moreover, after long-term use, oil fume will condense between the copper core and the pipe, and between the burner cap and the pipe, and it is very easy for the copper core and the burner cap to be not placed in place, resulting in the fire leakage problem being difficult to avoid. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a burner assembly and a gas stove, which solve the problem of fire leakage caused by the existing copper core not being placed in place and have a better user experience.

[0006] To achieve this purpose, on the one hand, the utility model adopts the following technical solutions:

[0007] A burner assembly, including: a burner head main body; and a copper core located above the burner head main body, and the copper core is detachably connected to the burner head main body through a connecting member to prevent relative axial movement between the copper core and the burner head main body.

[0008] In one preferred embodiment, the connecting member is a locking screw. A copper core threaded hole is provided on the copper core, and a burner head threaded hole is provided on the burner head main body. During installation, the connecting member passes through the burner head threaded hole and the copper core threaded hole to connect the copper core and the burner head main body together.

[0009] In one preferred embodiment, a copper core locking surface for contacting the burner body is formed on the copper core, a burner locking surface for contacting the copper core is formed on the burner body, and the copper core locking surface is attached to the burner locking surface.

[0010] In one preferred embodiment, an avoidance groove is provided in the burner body, the avoidance groove is located on a side of the burner threaded hole away from the copper core threaded hole, and the connecting member is screwed into or out of the burner threaded hole from the avoidance groove.

[0011] In one preferred embodiment, the burner assembly further includes a burner cap and a positioning pin. The burner cap is arranged above the burner body. One end of the positioning pin is inserted into the burner cap, and the other end of the positioning pin is inserted into the burner body.

[0012] In one preferred embodiment, a gas collecting cavity is provided on the copper core. The burner assembly includes a middle ring premixing cavity and an electrode needle. The gas collecting cavity is communicated with the middle ring premixing cavity through a fire protection air inlet. The gas collecting cavity is communicated with the outside of the burner assembly through a fire protection hole and a main gas hole of the gas collecting cavity. The fire protection hole extends in the direction of the electrode needle, and the diameter of the air inlet end of the main gas hole of the gas collecting cavity is smaller than the diameter of the fire protection hole.

[0013] In one preferred embodiment, at least two fire protection holes are provided on the wall surface of the gas collecting cavity, and the distance between two adjacent fire protection holes is greater than 0.5 times the diameter of the fire protection hole and less than the diameter of the fire protection hole.

[0014] In one preferred embodiment, the main gas hole of the gas collecting cavity is a stepped hole, and the diameter of the air outlet end of the main gas hole of the gas collecting cavity is larger than the diameter of the air inlet end.

[0015] In one preferred embodiment, the depth H of the gas collecting cavity in the axial direction is ≧ the diameter of the fire protection hole, the diameter of the fire protection hole ≤ the width L of the fire protection air inlet ≤ twice the diameter of the fire protection hole; and / or, a burner locking surface for contacting the copper core is formed on the burner body, and a gas distribution hole is provided on the burner locking surface, and the gas distribution hole is located between the gas collecting cavity and the middle ring premixing cavity; and / or, a waterproof edge is provided on the copper core, and the fire protection hole is located below the waterproof edge.

[0016] On the other hand, the present invention adopts the following technical solutions:

[0017] A gas stove, including the above-mentioned burner assembly.

[0018] The burner head assembly disclosed by the present utility model has a copper core detachably connected to the burner head body through a connecting member, which can prevent relative axial movement between the copper core and the burner head body, solve the problem of fire leakage caused by the copper core not being properly placed after being taken out, and has a good user experience. The main reason for separately processing the copper core and the burner head body is to reduce the processing difficulty. In normal use, users do not need to remove the copper core from the burner head body, so connecting the copper core and the burner head body together will not affect the normal use of the gas stove.

[0019] The gas stove disclosed by the present utility model includes the above-mentioned burner head assembly. The connecting member connects the copper core and the burner head body together, solves the problem of fire leakage caused by the copper core not being properly placed after being taken out, and has a good user experience. Description of the Drawings

[0020] Figure 1 is a schematic structural view of the burner head assembly provided by the specific embodiment of the present utility model;

[0021] Figure 2 is Figure 1 a partial enlarged view of part A in

[0022] Figure 3 is a sectional view of the burner head assembly provided by the specific embodiment of the present utility model;

[0023] Figure 4 is Figure 3 a partial enlarged view of part B in

[0024] Figure 5 is a schematic structural view of the burner head body provided by the specific embodiment of the present utility model;

[0025] Figure 6 is a rear view of the burner head body provided by the specific embodiment of the present utility model;

[0026] Figure 7 is a schematic structural view of the copper core from the back perspective provided by the specific embodiment of the present utility model;

[0027] Figure 8 is a rear view of the copper core provided by the specific embodiment of the present utility model.

[0028] In the figure:

[0029] 1, burner head body; 2, copper core; 3, connecting member; 4, burner cap; 5, positioning pin; 11, burner head threaded hole; 12, burner head locking surface; 13, relief groove; 14, middle ring premixing chamber; 15, electrode pin; 16, gas distribution hole; 17, burner head limiting edge; 18, thermocouple; 21, copper core threaded hole; 22, copper core locking surface; 23, gas collecting cavity; 24, main fire air inlet for maintaining fire; 25, main fire hole for maintaining fire; 26, main fire hole of the gas collecting cavity; 27, waterproof edge; 28, main fire hole of the core. Detailed implementation manners

[0030] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will describe in detail the specific implementation manners of the present utility model with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific implementation manners disclosed below.

[0031] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are 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 thus should not be construed as a limitation to the present utility model.

[0032] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0033] In the present utility model, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. 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.

[0034] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0035] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0036] This embodiment discloses a burner assembly and a gas stove including the burner assembly. As Figures 1 to 4 shown, the burner assembly includes a burner main body 1 and a copper core 2. The copper core 2 is in the shape of an inverted barrel. The copper core 2 is located above the burner main body 1 and the edge of the copper core 2 is sleeved outside the burner limiting edge 17, which can prevent the copper core 2 from moving radially relative to the burner main body 1.

[0037] The copper core 2 is detachably connected to the burner main body 1 through a connecting member 3 to prevent relative movement between the copper core 2 and the burner main body 1 along the axial direction, solving the problem of flame leakage caused by the copper core 2 not being placed in place after being taken out, and having a good user experience. The main reason for separately processing the copper core 2 and the burner main body 1 is to reduce the processing difficulty. In normal use, users do not need to remove the copper core 2 from the burner main body 1, so connecting the copper core 2 and the burner main body 1 together will not affect the normal use of the gas stove. Moreover, the copper core 2 and the burner main body 1 are detachably connected through the connecting member 3, and only the connecting member 3 needs to be removed to separate the copper core 2 and the burner main body 1, which is convenient to use.

[0038] The specific structure of the connecting member 3 is not limited as long as it can detachably connect the copper core 2 and the burner main body 1. In this embodiment, the connecting member 3 is a locking screw. A copper core threaded hole 21 is provided on the copper core 2, and a burner threaded hole 11 is provided on the burner main body 1. During installation, the connecting member 3 passes through the burner threaded hole 11 and the copper core threaded hole 21 to connect the copper core 2 and the burner main body 1 together.

[0039] The furnace head limiting edge 17 can prevent the copper core 2 from moving radially relative to the furnace head body 1. By setting a locking screw, the copper core 2 cannot move up and down relative to the furnace head body 1, and there is no need to worry about the copper core 2 rotating around the axis of the connecting piece 3. The overall structure is more compact and the cost is low.

[0040] As Figures 5 to 8 shown, a copper core locking surface 22 for contacting the furnace head body 1 is formed on the copper core 2, and a furnace head locking surface 12 for contacting the copper core 2 is formed on the furnace head body 1. After assembly, the copper core locking surface 22 fits to the furnace head locking surface 12, forming a planar seal between them to prevent gas and mixed gas from leaking out through the gap between the copper core locking surface 22 and the furnace head locking surface 12, making it safer to use; the furnace head limiting edge 17 prevents the copper core 2 from moving radially, and the connecting piece 3 prevents the copper core 2 from moving axially. After locking, the copper core 2 will not warp or slide, solving the problem that the copper core 2 is easily placed incorrectly after being taken.

[0041] On the basis of the above structure, an avoidance groove 13 is provided in the furnace head body 1. The avoidance groove 13 is located on the side of the furnace head threaded hole 11 away from the copper core threaded hole 21, and the connecting piece 3 is screwed into or out of the furnace head threaded hole 11 from the avoidance groove 13. The avoidance groove 13 can hide the head of the connecting piece 3, making the overall appearance of the furnace head assembly more beautiful; moreover, the avoidance groove 13 can play a guiding role for the connecting piece 3, enabling the connecting piece 3 to smoothly penetrate into the furnace head threaded hole 11 and the copper core threaded hole 21, improving the assembly efficiency.

[0042] In order to more thoroughly solve the problem of fire leakage, the furnace head assembly further includes a burner cap 4 and a positioning pin 5. The burner cap 4 is arranged above the furnace head body 1. One end of the positioning pin 5 is inserted into the burner cap 4, and the other end of the positioning pin 5 is inserted into the furnace head body 1. The positioning pin 5 can prevent the burner cap 4 from rotating around the axis of the furnace head body 1 and can also prevent the burner cap 4 from moving in the horizontal plane, avoiding the existence of gaps caused by misalignment between the burner cap 4 and the furnace head body 1, and more thoroughly preventing fire leakage.

[0043] On the basis of the above structure, a gas collecting cavity 23 is provided on the copper core 2. At least two fire retaining holes 25 and at least two main gas collecting cavity fire holes 26 are formed on the side wall surface of the gas collecting cavity 23. The main gas collecting cavity fire holes 26 are located above the fire retaining holes 25, and the gas ejected from the fire retaining holes 25 can supplement the insufficient gas at the main gas collecting cavity fire holes 26.

[0044] A core main fire hole 28 is also provided on the copper core 2. The main gas collecting cavity fire holes 26 and the core main fire hole 28 together form a ring on the copper core 2, making the flame more uniform. The diameter of the intake end of the main gas collecting cavity fire holes 26 is smaller than the diameter of the fire retaining holes 25, allowing more gas to enter the fire retaining holes 25 to prevent flame lift-off and providing a better user experience.

[0045] The burner head assembly includes a middle-ring premixing chamber 14 and an electrode pin 15. The gas-collecting concave chamber 23 is connected to the middle-ring premixing chamber 14 through a fire-preserving air inlet 24. Part of the gas in the middle-ring premixing chamber 14 can enter the gas-collecting concave chamber 23 through the fire-preserving air inlet 24. By controlling the cross-sectional area of the fire-preserving air inlet 24, the phenomena of flame lift-off and flashback at the fire-preserving holes 25 can be reduced, improving the product usage experience.

[0046] The gas-collecting concave chamber 23 is connected to the outside of the burner head assembly (i.e., the ambient space) through the fire-preserving holes 25 and the main gas holes 26 of the gas-collecting chamber. The fire-preserving holes 25 extend in the direction of the electrode pin 15 and the thermocouple 18. The gas in the gas-collecting concave chamber 23 can be ignited by the electrode pin 15 after being ejected through the fire-preserving holes 25 and the main gas holes 26 of the gas-collecting chamber, enabling smoother ignition and achieving the function of fire preservation and flame stabilization.

[0047] Based on the above structure, at least two fire-preserving holes 25 are provided on the wall surface of the gas-collecting concave chamber 23. 0.5 times the diameter of the fire-preserving hole 25 < the distance between two adjacent fire-preserving holes 25 < the diameter of the fire-preserving hole 25, making the flame more stable and reducing the phenomena of flame lift-off and flashback.

[0048] The specific shape of the main gas holes 26 of the gas-collecting chamber is not limited as long as it can stably generate a flame. In this embodiment, the main gas holes 26 of the gas-collecting chamber are stepped holes, and the diameter of the gas outlet end of the main gas holes 26 of the gas-collecting chamber is larger than the diameter of the gas inlet end. To ensure sufficient gas volume for the fire-preserving holes 25, the diameter of the gas inlet end of the main gas holes 26 of the gas-collecting chamber is smaller than the diameter of the fire-preserving holes 25, preventing flame lift-off.

[0049] The shape and specific dimensions of the gas-collecting concave chamber 23 are not limited as long as it can provide gas for the fire-preserving holes 25 and the main gas holes 26 of the gas-collecting chamber. In this embodiment, the depth H of the gas-collecting concave chamber 23 along the axial direction is ≥ the diameter of the fire-preserving holes 25, and the diameter of the fire-preserving holes 25 ≤ the width L of the fire-preserving air inlet 24 ≤ twice the diameter of the fire-preserving holes 25, avoiding the phenomenon of flashback while ensuring sufficient gas outlet volume from the gas-collecting concave chamber 23 and providing a better usage experience.

[0050] Based on the above structure, air distribution holes 16 are provided on the burner head locking surface 12, and the air distribution holes 16 are located between the gas-collecting concave chamber 23 and the middle-ring premixing chamber 14. The air distribution holes 16 can slow down the gas flow rate in the middle-ring premixing chamber 14 and control the size of the air flow entering the gas-collecting concave chamber 23, making the combustion flame more stable and solving the problems of flame lift-off and flashback.

[0051] To prevent the liquid flowing during pot overflow from blocking the fire-preserving holes 25, in this embodiment, a waterproof edge 27 is provided on the copper core 2, and the fire-preserving holes 25 are located below the waterproof edge 27. The specific shape of the waterproof edge 27 is not limited as long as it can intercept the liquid flowing out during pot overflow.

[0052] Figure 3 The curves with arrows indicate the gas flow routes.Figure 3 The dotted line with an arrow indicates the primary air flow path. During use, the fuel gas enters from the fuel gas inlet on the nozzle seat, and then exits from the middle ring nozzle and enters the middle ring ejector tube; inside the middle ring ejector tube, the fuel gas is premixed with the primary air and then enters the middle ring premixing chamber 14; most of the fuel gas mixture is ejected from the core main flame holes 28 and burns, and a small part of the fuel gas mixture enters the gas collecting concave cavity 23 through the fire protection air inlet 24, and then flows to the fire protection holes 25 and the main flame holes 26 of the gas collecting chamber respectively for combustion.

[0053] Note that the above is only the preferred embodiment of the present invention and the technical principles applied. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments only. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A furnace head assembly, characterized in that: include: Burner body (1); as well as, The copper core (2) is located above the burner body (1), and the copper core (2) is detachably connected to the burner body (1) via a connecting piece (3) to prevent relative movement between the copper core (2) and the burner body (1) in the axial direction.

2. The furnace head assembly according to claim 1, characterized in that: The connecting piece (3) is a locking screw. The copper core (2) is provided with a copper core threaded hole (21), and the furnace head body (1) is provided with a furnace head threaded hole (11). During installation, the connecting piece (3) passes through the furnace head threaded hole (11) and the copper core threaded hole (21) to connect the copper core (2) and the furnace head body (1) together.

3. The furnace head assembly according to claim 2, characterized in that: A copper core locking surface (22) for contacting the burner head main body (1) is formed on the copper core (2), and a burner head locking surface (12) for contacting the copper core (2) is formed on the burner head main body (1), and the copper core locking surface (22) is attached to the burner head locking surface (12).

4. The furnace head assembly according to claim 2, characterized in that: An avoidance groove (13) is provided in the burner head body (1), and the avoidance groove (13) is located on a side of the burner head threaded hole (11) away from the copper core threaded hole (21), and the connecting piece (3) is screwed into or out of the burner head threaded hole (11) from the avoidance groove (13).

5. The burner head assembly according to any one of claims 1 to 4, characterized in that: The burner head assembly further comprises a fire cover (4) and a positioning pin (5); the fire cover (4) is arranged above the burner head body (1); one end of the positioning pin (5) is inserted into the fire cover (4); and the other end of the positioning pin (5) is inserted into the burner head body (1).

6. The burner head assembly according to any one of claims 1 to 4, characterized in that: The copper core (2) is provided with a gas collecting cavity (23), the burner head assembly comprises a middle ring premixing cavity (14) and an electrode needle (15), the gas collecting cavity (23) is connected to the middle ring premixing cavity (14) through a fire protection air inlet (24), the gas collecting cavity (23) is connected to the outside of the burner head assembly through a fire protection hole (25) and a gas collecting cavity main fire hole (26), the fire protection hole (25) extends toward the electrode needle (15), and the diameter of the gas inlet end of the gas collecting cavity main fire hole (26) is smaller than the diameter of the fire protection hole (25).

7. The furnace head assembly according to claim 6, characterized in that: At least two fire-keeping holes (25) are arranged on the wall surface of the gas collecting cavity (23), and the distance between two adjacent fire-keeping holes (25) is greater than 0.5 times the diameter of the fire-keeping hole (25) and less than the diameter of the fire-keeping hole (25).

8. The burner head assembly according to claim 6, characterized in that: The main fire hole (26) of the gas collection cavity is a stepped hole, and the diameter of the gas outlet end of the main fire hole (26) of the gas collection cavity is larger than the diameter of the gas inlet end.

9. The furnace head assembly according to claim 6, characterized in that: The depth H of the gas collecting cavity (23) along the axial direction is ≧the diameter of the fire protection hole (25), and the diameter of the fire protection hole (25) is ≤ the width L of the fire protection air inlet (24) ≤ twice the diameter of the fire protection hole (25); and / or, A burner head locking surface (12) for contacting the copper core (2) is formed on the burner head main body (1), and a gas separation hole (16) is provided on the burner head locking surface (12), and the gas separation hole (16) is located between the gas collecting cavity (23) and the middle ring premixing cavity (14); and / or, The copper core (2) is provided with a waterproof edge (27), and the fire protection hole (25) is located below the waterproof edge (27).

10. A gas stove, characterized in that: The invention comprises a burner head assembly according to any one of claims 1 to 9.

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