Gas inlet pipe and gas stove

Abstract

The utility model discloses a gas inlet pipe and a gas stove, and belongs to the technical field of kitchen appliances. The gas inlet pipe comprises a gas inlet end and a sealing end, the gas inlet end is used for being connected with a prefabricated connector, the gas inlet end is provided with an anti-disengaging part, the anti-disengaging part can prevent the prefabricated connector from disengaging from the gas inlet pipe, the prefabricated connector is used for being connected with a hose connector of a gas pipeline, and the prefabricated connector does not need to be welded to the gas inlet pipe. Quick connection and sealing of the prefabricated joint and the hose joint can be realized; the sealing end is located at the tail end of the air inlet pipe and provided with a flat structure, the two opposite inner walls of the flat structure are attached to each other to achieve the sealing effect, end face sealing can be achieved without welding the sealing structure, the structure is simple, and machining is easy. The gas stove disclosed by the utility model comprises the gas inlet pipe. The gas stove is few in welding structure, simple and reliable in structure, environment-friendly in machining process and high in production efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to an air inlet pipe and a gas stove. Background Technique

[0002] The air inlet pipes of existing household gas stoves generally use steel hollow pipes as the main structure. At one end, it is first blocked with a plug, and then the plug and the hollow pipe are welded and fixed by welding to form a sealed end. At the other end, a prefabricated joint and the hollow pipe are welded and fixed by welding to achieve the connection and sealing function.

[0003] In the production and manufacturing process, welding is a very important process. During the welding process, deformation is likely to occur, the dimensional deviation is relatively large, and abnormal problems such as missed welding and false welding are likely to occur in the welding process. If the air inlet pipe is not found in time and installed into the whole machine to pass gas, there is a risk of air leakage, and even major safety hazards such as deflagration and fire that endanger life and property will occur; in addition, the welding process is carried out in a high-temperature environment, the working environment is harsh, and harmful gases are emitted, which is harmful to the health of operators and will cause environmental pollution.

[0004] Therefore, it is urgent to design an air inlet pipe and a gas stove to solve the above technical problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide an air inlet pipe that does not require a welding process, has a simple structure and reliable connection.

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

[0007] An air inlet pipe made of a hollow steel pipe, the air inlet pipe includes:

[0008] An air inlet end for connecting a prefabricated joint, the air inlet end has an anti-disengagement part, and the anti-disengagement part can prevent the prefabricated joint from falling off the air inlet pipe; and,

[0009] A sealed end located at the end of the air inlet pipe, the sealed end has a flat structure, and the two opposite inner walls of the flat structure are mutually attached.

[0010] As a preferred technical solution of the above air inlet pipe, the anti-disengagement part is a convex platform formed by upsetting, and the total radial dimension of the convex platform is greater than the diameter of the prefabricated joint.

[0011] As a preferred technical solution of the above air inlet pipe, the anti-disengagement part is an annular convex platform, and the diameter of the annular convex platform is greater than the diameter of the prefabricated joint.

[0012] As a preferred technical solution of the above air inlet pipe, the anti-disengagement part is arranged at the end of the air inlet end.

[0013] As a preferred technical solution of the above intake pipe, the flat structure is a duckbill-like structure.

[0014] As a preferred technical solution of the above intake pipe, the sealing end includes a first side wall and a second side wall, and the first side wall and the second side wall taper inwards towards each other to form the flat structure, and the first side wall and the second side wall are symmetrically arranged with respect to the longitudinal section of the intake pipe.

[0015] As a preferred technical solution of the above intake pipe, at least one pressing rib is provided on the plane of the sealing end.

[0016] As a preferred technical solution of the above intake pipe, the extending direction of the pressing rib is perpendicular to the axial direction of the sealing end.

[0017] As a preferred technical solution of the above intake pipe, the flat structure is connected to the pipe body of the intake pipe through an arc section.

[0018] The purpose of the present utility model is to provide a gas stove, which has fewer welding structures, is simple and reliable in structure, environmentally friendly in the processing process and has high production efficiency.

[0019] To achieve this purpose, the present utility model also adopts the following technical solutions:

[0020] A gas stove includes the above intake pipe.

[0021] The intake pipe disclosed by the present utility model includes an air inlet end and a sealing end. The air inlet end is used to connect a prefabricated joint. The air inlet end has an anti-disconnection part, and the anti-disconnection part can prevent the prefabricated joint from falling off the intake pipe. The prefabricated joint is used to connect the hose joint of the gas pipeline. The prefabricated joint does not need to be welded on the intake pipe to achieve the quick connection and sealing between the prefabricated joint and the hose joint; the sealing end is located at the end of the intake pipe, and the sealing end has a flat structure, and the two opposite inner walls of the flat structure are mutually attached to achieve a sealing effect. Without a welded sealing structure, end face sealing can be realized, and the structure is simple and easy to process.

[0022] The gas stove disclosed by the present utility model includes the above intake pipe. This gas stove has fewer welding structures, is simple and reliable in structure, environmentally friendly in the processing process and has high production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is an exploded view of the gas stove provided by the specific embodiment of the present utility model;

[0024] Figure 2 is a structural schematic diagram of the intake pipe of the gas stove provided by the specific embodiment of the present utility model;

[0025] Figure 3It is a schematic structural diagram of the air inlet end of the air inlet pipe provided by the specific embodiment of the present utility model;

[0026] Figure 4 It is a schematic structural diagram of the sealed end of the air inlet pipe provided by the specific embodiment of the present utility model;

[0027] Figure 5 is Figure 4 the sectional view in the A-A direction in

[0028] In the figure:

[0029] 100, air inlet pipe;

[0030] 1, air inlet end; 11, anti-disengagement part; 12, prefabricated joint;

[0031] 2, sealed end; 21, flat structure; 22, pressing rib; 23, arc section;

[0032] 3, air outlet hole;

[0033] 200, chassis; 300, valve body; 400, air guide pipe; 500, burner. Specific embodiment

[0034] To make the above objects, features and advantages of the present utility model more obvious and understandable, the following will describe the specific embodiments of the present utility model in detail 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 embodiments disclosed below.

[0035] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by 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. is based on the orientation or positional relationship shown in the accompanying 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 limiting the present utility model.

[0036] In addition, 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 quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0037] In the present utility model, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "connected to", "fixed" and the like shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside 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.

[0038] 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 indirectly in 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 first feature has a higher horizontal height than 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 first feature has a lower horizontal height than the second feature.

[0039] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may 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 may be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0040] Such as Figure 1As shown in the figure, this embodiment provides a gas stove, which includes components such as a chassis 200, an air inlet pipe 100, a valve body 300, a gas guide pipe 400, and a burner 500. The air inlet pipe 100 and the valve body 300 are respectively connected to the chassis 200 by screws. The burner 500 is installed inside the chassis 200. The valve body 300 is connected to the burner 500 through the gas guide pipe 400. Gas enters from one end of the air inlet pipe 100 and is controlled by the valve body 300 to flow into the burner 500, and the flame starts to burn at the head of the burner 500 to heat the cookware, realizing heating and cooking.

[0041] As Figure 2 shown in the figure, the air inlet pipe 100 in this embodiment is made of a hollow steel pipe and is integrally in an L-shaped elbow. The air inlet pipe 100 includes an air inlet end 1 and a sealing end 2. The air inlet end 1 is used to connect a prefabricated joint 12 and connect to the gas pipeline. The sealing end 2 is located at the end of the air inlet pipe 100 and is used for sealing the end of the pipeline. The prefabricated joint 12 is a pre-processed connecting joint and is used for connecting the hose joint of the gas pipeline.

[0042] Specifically, the air inlet end 1 has an anti-disengagement part 11, and the anti-disengagement part 11 can prevent the prefabricated joint 12 from falling off the air inlet pipe 100, thereby avoiding the connection failure between the air inlet pipe 100 and the gas pipeline. The anti-disengagement part 11 is a convex platform formed by pressing. The total radial dimension of the convex platform is larger than the diameter of the prefabricated joint 12. In the actual processing and manufacturing process, first put the pre-processed prefabricated joint 12 on the air inlet pipe 100, and then put the air inlet end 1 into the mold, and press to form a convex platform structure. The total radial dimension of the convex platform is larger than the diameter of the prefabricated joint 12 to prevent the prefabricated joint 12 from falling off. The hose joint is connected to the prefabricated joint 12 by threads to achieve connection and sealing at the air inlet. The prefabricated joint 12 does not need to be welded to the air inlet pipe 100, and the quick connection and sealing between the prefabricated joint 12 and the hose joint can be realized.

[0043] In this embodiment, as Figure 3 shown in the figure, the anti-disengagement part 11 is an annular convex platform, and the diameter of the annular convex platform is larger than the diameter of the prefabricated joint 12. The processing mold of the annular convex platform is simple and easy to make, and the forming is easy. Moreover, the prefabricated joint 12 is cylindrical, and the annular convex platform has a better anti-disengagement effect on the prefabricated joint 12.

[0044] The anti-disengagement part 11 is arranged at the end of the air inlet end 1, which is easy to process and form, and can ensure the effective length of the air inlet pipe 100. The anti-disengagement part 11 can also be arranged at other parts of the air inlet end 1, such as a position at a certain distance from the end of the air inlet end 1, and can also play an anti-disengagement role.

[0045] As Figure 4 and Figure 5As shown, the sealing end 2 of the intake pipe 100 has a flat structure 21, and the two opposite inner walls of the flat structure 21 are in contact with each other to achieve a sealing effect. Specifically, the flat structure 21 is a duckbill-shaped structure. The intake pipe 100 can achieve end face sealing without a welded sealing structure, with a simple structure and easy to process.

[0046] The sealing end 2 includes a first side wall and a second side wall. The first side wall and the second side wall taper inwardly towards each other to form the flat structure 21, and the first side wall and the second side wall are symmetrically arranged with respect to the longitudinal section of the intake pipe 100. This duckbill-shaped structure is easy to process, and the sealing effect of the symmetric structure is more reliable.

[0047] To ensure a more reliable sealing effect of the sealing end 2, at least one pressing rib 22 is provided on the flat surface of the sealing end 2. The pressing rib 22 is used to enhance the sealing performance of the flat structure 21 and ensure reliable sealing. The pressing rib 22 is provided on the outer surface of the flat surface. The number of the pressing ribs 22 can be one or more, and can be designed according to the actual size of the flat structure 21. The extending direction of the pressing rib 22 is perpendicular to the axis direction of the sealing end 2.

[0048] As Figure 5 shown, in this embodiment, the flat structure 21 and the pipe body of the intake pipe 100 are connected through an arc section 23. The provision of the arc section 23 enables a smooth transition between the pipe body and the flat structure 21, which can reduce stress concentration and improve the structural strength of the intake pipe 100.

[0049] As Figure 2 shown, an air outlet hole 3 is further provided on the intake pipe 100 for connecting with the valve body 300 to supply air.

[0050] The processing process of the intake pipe 100 in this embodiment is as follows:

[0051] First, use a pipe cutter to cut the pipe to the required length, bend it into an L shape with a pipe bender, put the prefabricated joint 12 that has been pre-processed on the air inlet end 1 of the air inlet pipe 100, put the air inlet end 1 in the mold, and form a ring-shaped boss structure by pier pressing to prevent the prefabricated joint 12 from falling off. The hose joint is connected to the prefabricated joint 12 by threading to achieve the connection seal at the air inlet. The prefabricated joint 12 does not need to be welded to the air inlet pipe 100 to achieve the connection seal; then put the end of the air inlet pipe 100 in the forming mold, pierce the round tube into a duckbill structure to form a sealing end 2, and provide one or more compression ribs 22 on the plane. The extension direction of the compression ribs 22 is perpendicular to the axial direction of the air inlet pipe 100, which is used to strengthen the sealing performance of the sealing end 2 and ensure reliable sealing. Then, according to the center distance of the knob, determine the installation position of the valve body 300, and drill the air outlet 3 at the corresponding position of the air inlet pipe 100 by punching with a twist drill. At this point, the processing of the intake pipe 100 is basically completed. The entire process only requires three steps of cutting, pressing and drilling to complete. No welding and sealing process is required. The manufacturing process is simple, the structure is reliable, the processing process is environmentally friendly and the production efficiency is higher.

[0052] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. An intake pipe, made of a hollow steel pipe, characterized in that, The air intake pipe comprises: An air inlet end (1) is used to connect a prefabricated joint (12), the air inlet end (1) having an anti-detachment portion (11), the anti-detachment portion (11) being capable of preventing the prefabricated joint (12) from falling off the air inlet pipe; and The sealing end (2) is located at the end of the air inlet pipe, and the sealing end (2) has a flat structure (21), and two opposite inner walls of the flat structure (21) are in contact with each other.

2. The air intake pipe according to claim 1, characterized in that: The anti-slip portion (11) is a boss formed by pier pressing, and the total radial dimension of the boss is greater than the diameter of the prefabricated joint (12).

3. The air intake pipe according to claim 2, characterized in that: The anti-detachment portion (11) is an annular boss, and the diameter of the annular boss is greater than the diameter of the prefabricated joint (12).

4. The air intake pipe according to claim 1, characterized in that: The anti-slip portion (11) is arranged at the end of the air inlet end (1).

5. The air intake pipe according to claim 1, characterized in that: The flat structure (21) is a duckbill-shaped structure.

6. The air intake pipe according to claim 5, characterized in that: The sealing end (2) comprises a first side wall and a second side wall, wherein the first side wall and the second side wall taper inwardly toward each other to form the flat structure (21), and the first side wall and the second side wall are symmetrically arranged with respect to a longitudinal section of the air inlet pipe.

7. The air intake pipe according to claim 1, characterized in that: At least one compression rib (22) is provided on the plane of the sealing end (2).

8. The air intake pipe according to claim 7, characterized in that: The extension direction of the compression rib (22) is perpendicular to the axial direction of the sealing end (2).

9. The air intake pipe according to any one of claims 1 to 8, characterized in that: The flat structure (21) is connected to the pipe body of the air intake pipe via an arc segment (23).

10. A gas stove, characterized in that, It comprises the air intake pipe (100) as claimed in any one of claims 1 to 9.

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