Ceramic tube and electric flame stove

Abstract

The utility model discloses a ceramic tube, which comprises an upper ceramic tube and a lower ceramic tube, the section of the upper ceramic tube and the section of the lower ceramic tube are both in a circular ring shape, and the area of the section of an inner cavity of the lower ceramic tube is larger than that of the section of an inner cavity of the upper ceramic tube. The upper ceramic tube and the lower ceramic tube are coaxial, and openings at the upper and lower ends of the upper ceramic tube and the lower ceramic tube are communicated to form a hollow structure circular ring; the circumferential wall of the upper ceramic tube is further provided with at least one air inlet groove, and the air inlet groove extends to the top face of the circumferential wall of the upper ceramic tube. According to the utility model, the overall weight is reduced, production procedures are reduced, materials are saved, and the labor cost is saved.

Description

Technical Field

[0001] The utility model specifically relates to an electric flame cooker. Background Art

[0002] The electric flame stove is a new type of kitchen appliance that uses advanced technology and structural design to efficiently convert electrical energy into thermal energy and quickly heat food.

[0003] As an emerging technology, the current existing technology still has problems such as high production and manufacturing costs. For example, the patent with application number CN202311369153.9 discloses a burner head and an electric flame stove with a rotating working medium jet, including: a cathode plate, a plurality of cathode flame-spraying tubes with a hollow structure arranged on the cathode plate, a plurality of insulating seats, and a plurality of anode needles arranged on the insulating seat; a guide plate is provided under the cathode plate, and the guide plate is fixedly connected to the cathode plate to form a guide space; the insulating seat and the cathode flame-spraying tube are clamped by the guide plate and the cathode plate, and are fixedly connected to form an arc generating space; a plurality of air inlet holes are provided at the bottom of the insulating seat, and the air inlet holes are inclined and used to produce a rotating air fluid in the arc generating space. In order to prevent arcing between the anode needle and the adjacent anode needle or guide plate, the prior art sets the bottom of the insulating seat in a closed state and provides a connecting groove, which increases the material and manufacturing cost of the insulating seat. At the same time, the air inlet holes are provided at the bottom of the insulating seat, and iron needles need to be embedded in advance when manufacturing the insulating seat blank, and the iron needles need to be pulled out after the blank is air-dried. Such a process increases labor costs. Utility Model Content

[0004] The utility model aims to overcome the above-mentioned shortcomings and provide a technical solution that can solve the above-mentioned problems.

[0005] A ceramic tube, comprising an upper ceramic tube and a lower ceramic tube; the cross-sections of the upper ceramic tube and the lower ceramic tube are both annular, and the area of ​​the inner cavity cross-section of the lower ceramic tube is larger than the area of ​​the inner cavity cross-section of the upper ceramic tube; the upper ceramic tube and the lower ceramic tube are coaxial and have a hollow structure annular shape with upper and lower ends opening to communicate with each other;

[0006] The circumferential wall of the upper ceramic tube is also provided with at least one air inlet groove, and the air inlet groove extends to the top surface of the circumferential wall of the upper ceramic tube;

[0007] Preferably, there are multiple air inlet grooves, and the distance between two adjacent air inlet grooves is equal;

[0008] Preferably, the air inlet groove forms an angle of nearly 180° with the outlet of the air inlet groove on the inner wall of the upper ceramic tube, so as to limit the flow direction of the moving gas and form a vortex gas flow;

[0009] Preferably, the thickness of the ceramic tube is 0.5-1.3 mm;

[0010] To achieve one or part or all of the above purposes or other purposes, an electric flame stove comprises the ceramic tube, a positive electrode installed in the lower ceramic tube, a negative electrode connected to the top surface of the upper ceramic tube, a stove top plate and a stove bottom plate;

[0011] Preferably, the cross section of the positive electrode is a solid annular shape, the inner wall of the upper ceramic tube limits the upward movement of the positive electrode, and a conical arc-starting needle is provided at the center of the upper surface of the positive electrode;

[0012] Preferably, the cross section of the negative electrode is a circular ring with openings at both ends and a hollow structure;

[0013] Preferably, a limiting ring is further provided at the lower end of the negative electrode;

[0014] Preferably, the furnace head bottom plate is made of non-conductive insulating material.

[0015] Compared with the prior art, the advantages of the utility model are:

[0016] 4. Reduced overall weight;

[0017] 5. Reduced production processes;

[0018] 6. Save materials;

[0019] 7. Save labor costs.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 It is a three-dimensional schematic diagram of a ceramic tube.

[0023] Figure 2 It is a schematic diagram of the cross section of a ceramic tube.

[0024] Figure 3 It is a schematic diagram of the cross section of the burner of an electric flame stove. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present utility model are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present utility model.

[0026] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0027] In addition, in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can also be the internal communication of two components, it can be a wireless connection, or it can be a wired connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In addition, the technical features involved in the different embodiments of the present invention described later can be combined with each other as long as they do not conflict with each other.

[0029] See also Figures 1 to 3 In an embodiment of the utility model, a ceramic tube 1 comprises an upper ceramic tube 11 and a lower ceramic tube 12; the circumferential wall of the upper ceramic tube 11 is also provided with at least one air inlet groove 13, and the air inlet groove 13 extends to the top surface of the circumferential wall of the upper ceramic tube 11; there are multiple air inlet grooves 13, and the distance between two adjacent air inlet grooves 13 is equal; the air inlet groove 13 disconnects the upper end of the circumferential wall of the upper ceramic tube 11. In the production process, a mold can be used to directly manufacture the blank of the ceramic tube 1, which reduces the process of using pre-buried iron needles and then pulling out the iron needles after the blank is shaped, thereby improving production efficiency and saving labor costs.

[0030] In this embodiment, the air inlet groove 13 and the outlet of the air inlet groove 13 on the inner wall of the upper ceramic tube 11 form an angle of nearly 180° so as to limit the flow direction of the moving gas and make the gas form a vortex airflow; the introduced gas forms an airflow with a vortex motion centered on the axis of the ceramic tube 1 at the outlet of the air inlet groove 13, and the airflow cools the inner wall of the ceramic tube 1 and protects the arc at the same time.

[0031] The utility model also discloses an electric flame stove, comprising a ceramic tube 1, a positive electrode 2 installed in a lower ceramic tube 12, a negative electrode 3 connected to the top surface of an upper ceramic tube 11, a stove top plate 4 and a stove bottom plate 5;

[0032] The cross section of the positive electrode 2 is a solid ring, the cross sections of the upper ceramic tube 11 and the lower ceramic tube 12 are both ring-shaped, the area of ​​the inner cross section of the lower ceramic tube 12 is larger than the area of ​​the inner cross section of the upper ceramic tube 11, and the inner wall of the upper ceramic tube 11 limits the upward movement of the positive electrode 2;

[0033] A conical arc-starting needle 21 is provided at the center of the upper surface of the positive electrode 2, and the top of the arc-starting needle 21 produces an arc effect with the nearest negative electrode 3, thereby generating high-energy plasma with a plasma temperature of more than 1000 degrees Celsius.

[0034] In this embodiment, the upper ceramic tube 11 and the lower ceramic tube 12 are coaxial and hollow ring-shaped with openings at both ends communicating with each other. The thickness of the ceramic tube 1 is 0.5-1.3 mm; the furnace head bottom plate 5 is a non-conductive insulating material. Compared with the prior art, the ceramic tube 1 of the utility model eliminates the closed bottom of the ceramic tube 1 and the connection groove at the bottom, and the circumferential wall thickness of the ceramic tube 1 can be only 0.5-1.3 mm. Such a design reduces the material and the weight of the ceramic tube 1, while saving material costs.

[0035] In this embodiment, the cross-section of the negative electrode 3 is a circular ring with two open ends and a hollow structure. A limiting ring 31 is also provided at the lower end of the negative electrode 3. The limiting ring 31 limits the upward movement of the upper end of the ceramic tube 1, so that the ceramic tube 1 is fixed between the negative electrode 3 and the furnace head bottom plate 5.

[0036] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A ceramic tube for an electric flame cooker, characterized in that: comprising an upper ceramic tube and a lower ceramic tube; The cross-sections of the upper ceramic tube and the lower ceramic tube are both annular, and the area of ​​the inner cross-section of the lower ceramic tube is larger than that of the inner cross-section of the upper ceramic tube; the upper ceramic tube and the lower ceramic tube are coaxial and have a hollow structure annular shape with upper and lower ends opening to communicate with each other; The circumferential wall of the upper ceramic tube is also provided with at least one air inlet groove, and the air inlet groove extends to the top surface of the circumferential wall of the upper ceramic tube.

2. The ceramic tube according to claim 1, characterized in that There are multiple air inlet grooves, and the distance between two adjacent air inlet grooves is equal.

3. The ceramic tube according to claim 1, characterized in that The air inlet groove and the outlet of the air inlet groove on the inner wall of the upper ceramic tube form an angle of nearly 180 degrees, so as to limit the flow direction of the moving gas and make the gas form a vortex airflow.

4. The ceramic tube according to claim 2, characterized in that The thickness of the ceramic tube is 0.5-1.3 mm.

5. An electric flame cooker, characterized in that: The electric flame cooker comprises the ceramic tube according to any one of claims 1 to 4.

6. The electric flame cooker according to claim 5, characterized in that: The electric flame cooker also includes a positive electrode installed in the lower ceramic tube, a negative electrode connected to the top surface of the upper ceramic tube, a stove top plate and a stove bottom plate.

7. The electric flame cooker according to claim 6, characterized in that: The cross section of the positive electrode is a solid ring shape. The inner wall of the upper ceramic tube limits the upward movement of the positive electrode. A conical arc-starting needle is provided at the center of the upper surface of the positive electrode.

8. The electric flame cooker according to claim 6, characterized in that: The cross section of the negative electrode is a circular ring with openings at both ends and a hollow structure.

9. The electric flame cooker according to claim 8, characterized in that: A limiting ring is also provided at the lower end of the negative electrode.

10. The electric flame cooker according to claim 6, characterized in that: The furnace head bottom plate is made of non-conductive insulating material.

Images