Burner capable of shielding electromagnetic radiation and commercial electric flame stove

Abstract

The utility model discloses a furnace end capable of shielding electromagnetic radiation and a commercial electric flame stove. The furnace end capable of shielding electromagnetic radiation comprises a furnace end plate, a shell arranged below the furnace end plate, an insulating plate arranged at the bottom in the shell and a plurality of electric arc devices, the lower end face of the insulating plate is provided with a plurality of insulating pipes corresponding to the arc devices, the lower end face of the insulating plate is attached to the bottom of the shell, and the insulating pipes penetrate through the bottom of the shell and extend downwards. According to the utility model, the insulating plate and the insulating tube are added, and a channel is provided inside the insulating tube, so that the electrode holder can be connected with an external circuit, the creepage distance between the electrode holder and the shell is increased, and the risk of electrical breakdown is reduced.

Description

Technical Field

[0001] The invention relates to a burner head capable of shielding electromagnetic radiation, and relates to a commercial electric flame cooker. Background Art

[0002] Modern commercial stoves typically utilize high-power, high-energy stoves, the most common of which are commercial gas stoves. These stoves utilize high heat to meet the needs of restaurants, hotels, banquets, and banquets for quick cooking. Dishes cooked with this high heat also have a superior texture. This led to the development of high-power commercial induction cookers, which use high-power current to heat the wok and have partially replaced gas stoves. However, in practice, induction cookers do not generate as much heat as open-flame gas stoves, and the resulting dishes do not taste as good as those cooked with open flames.

[0003] In response to the shortcomings of the above two stoves, researchers have developed an electric flame stove that does not require any fuel and can directly convert electrical energy into a high-temperature, high-spectrum electric arc (electric flame) for heating.

[0004] For example, the patent with authorization announcement number CN221005149U proposes a burner head, including: a furnace, several ceramic tubes, an electrode needle arranged in the middle of the ceramic tube, and several flame-spraying tubes for generating circuit return with the electrode needle; the lower end of the ceramic tube is provided with a hollow mounting groove, and the electrode needle passes through the mounting groove to be electrically connected to the external power supply of the burner head.

[0005] The electrode needle of the above patent is fixed to the mounting groove at the lower end of the ceramic tube by a thread. However, during the later transportation or user use, the electrode needle is easy to loosen, affecting normal use.

[0006] Researchers have made technical improvements, such as the patent application number: CN202410091845.X, which proposes a structurally optimized commercial stove burner, including: a burner top plate, a gas collecting box, and multiple plasma generators; the plasma generator includes a shrink tube serving as a cathode, an anode cylinder, and an insulating ceramic tube; the ceramic tube is cylindrical with two open ends, and the lower end of the shrink tube is provided with a first annular embedding groove, and the upper end of the ceramic tube is embedded in the first embedding groove; the radial diameter of the shrink tube is smaller than the radial diameter of the ceramic tube; the lower end of the ceramic tube is provided with a second annular embedding groove, and the anode cylinder is embedded in the second embedding groove.

[0007] The above-mentioned prior art does not require threaded connection or welding for the anode cylinder platform used for discharging, so the assembly is simple, the labor cost is reduced, and the production efficiency is improved. However, the gas collecting box in contact with the anode column uses low-cost insulating mica plates or ceramic plates. In the actual product application process, the mica plates or ceramic plates cannot absorb electromagnetic waves, and the electromagnetic waves generated by the high-voltage discharge of the electrodes will penetrate through the mica plates or ceramic plates, affecting the electronic components of the circuit below, causing the electronic components to heat up and be easily damaged, affecting the normal use and safety of commercial electric stoves; in addition, electromagnetic radiation may also have an adverse impact on the human body in long-term close contact with the electric stove. Summary of the Invention

[0008] The present invention aims to provide a technical solution to solve the above problems in order to overcome the above-mentioned deficiencies.

[0009] A burner head and a commercial electric stove for shielding electromagnetic radiation, including a burner head plate, a housing arranged below the burner head plate, an insulating plate arranged at the bottom inside the housing, and a plurality of arc devices; a plurality of insulating tubes corresponding to the arc devices are arranged on the lower end surface of the insulating plate, the lower end surface of the insulating plate fits the bottom of the housing, and the insulating tubes extend downward through the bottom of the housing; the arc device includes a flame spraying tube, a ceramic tube, and an electrode seat; the lower end surface of the electrode seat fits the insulating plate, and the inner empty slot of the corresponding insulating tube directly communicates with the lower end surface of the electrode seat, and the annular boss at the upper end inside the ceramic tube is arranged to limit the upward movement of the electrode seat, so that the electrode seat is fixed inside the ceramic tube; the bottom of the flame spraying tube is arranged on the burner head plate, and its upper end extends upward through the burner head plate, and the bottom surface of the flame spraying tube fits the top surface of the corresponding ceramic tube; the burner head plate and the housing are fixedly connected by bolts, and the arc device as a whole is clamped and fixed in a proper position; the burner head plate, the housing, and the flame spraying tube are all made of stainless steel material and form a cover body for absorbing electromagnetic radiation;

[0010] Preferably, a nearly sealed space is formed between the burner head plate and the housing;

[0011] Preferably, the housing is also provided with an intake fan for supplying gas to the arc device;

[0012] Preferably, at least one intake groove is provided at the upper end of the ceramic tube, and the intake groove communicates the inside of the housing with the inner cavity of the ceramic tube, so that gas enters the ceramic tube through the intake groove;

[0013] Preferably, the outlet of the flame spraying tube is in a contracted shape.

[0014] A burner head of a commercial electric stove includes the burner head for shielding electromagnetic radiation according to any one of the above.

[0015] Compared with the prior art, the advantages of the present invention are as follows: the burner plate, the housing and the flame jet pipe of the present invention jointly form a conductive cover for absorbing electromagnetic radiation, which effectively prevents the influence of electromagnetic wave radiation on the circuit structure and also protects the operator from the influence of electromagnetic wave radiation; the present invention adds an insulating plate and an insulating pipe, and the insulating pipe provides a channel inside, so that the electrode base can be connected to the external circuit, increasing the creepage distance between the electrode base and the housing and reducing the risk of electrical breakdown.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, will become apparent in part from the following description, or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 is a structural cross-sectional view of the present invention.

[0019] Figure 2 is Figure 1 an enlarged view of the A circle in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0021] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0022] In addition, in the description of the present invention, unless otherwise clearly specified and defined, terms such as "installation", "connection", and "coupling" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and may also be the communication inside two components. It may be a wireless connection or a wired connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] In addition, the technical features involved in different embodiments of the present invention described hereinafter can be combined with each other as long as they do not conflict with each other.

[0024] Please refer to Figures 1-2 , in an embodiment of the present invention, a burner head for shielding electromagnetic radiation includes a burner head plate 1, a housing ② disposed below the burner head plate 1, an insulating plate 3 disposed at the bottom inside the housing 2, and a plurality of arc devices 4;

[0025] A plurality of insulating tubes 31 corresponding to the arc devices 4 are provided on the lower end surface of the insulating plate 3. The lower end surface of the insulating plate 3 is attached to the bottom of the housing 2, and the insulating tubes 31 extend downward through the bottom of the housing 2. Generally, the insulating plate 3 and the insulating tubes 31 are made of ceramic materials with good insulation performance and high temperature resistance. To ensure sufficient insulation performance, the thickness of the insulating plate 3 and the wall thickness of the insulating tubes 31 are at least 3 mm, ensuring a sufficient safety creepage distance between the electrode seat 41 disposed on the upper end surface of the insulating plate 3 and the housing 2 attached to the lower end surface of the insulating plate 3, and reducing the risk of electrical breakdown.

[0026] The lower end surface of the electrode seat 41 is attached to the insulating plate 3, and the inner cavity of the corresponding insulating tube 31 is directly connected to the lower end surface of the electrode seat 41. The insulating tube 31 provides a channel inside, enabling the electrode seat 41 to be connected to an external circuit, while the insulating tube 31 maintains good insulation.

[0027] The annular boss provided at the upper end inside the ceramic tube 42 restricts the upward movement of the electrode seat 41, fixing the electrode seat 41 inside the ceramic tube 42; the raised portion formed at the upper end inside the ceramic tube 42 is an annular boss, and the annular boss can be a ring structure or other shapes. Its main function is to mechanically restrict the upward movement of the electrode seat 41 and limit the electrode seat 41 at the lower end inside the ceramic tube 42.

[0028] The bottom of the flame spraying tube 43 is disposed on the burner head plate 1, and its upper end extends upward through the burner head plate 1. The bottom surface of the flame spraying tube 43 is attached to the top surface of the corresponding ceramic tube 42; the outlet of the flame spraying tube 43 is in a constricted shape, accelerating the movement of the plasma and effectively ejecting the flame spraying tube 43.

[0029] The burner head plate 1 is provided with a plurality of openings for installing and positioning the flame jet pipe 43; the upper end of the flame jet pipe 43 passes through the opening of the burner head plate 1 and extends upward, and its lower end is fixed on the burner head plate 1. The bottom surface of the flame jet pipe 43 is attached to the top surface of the corresponding ceramic pipe 42 so that the two are nearly hermetically connected.

[0030] The burner head plate 1 and the housing 2 are fixedly connected by bolts, and the arc device 4 as a whole is clamped and fixed in a suitable position; the burner head plate 1, the housing 2 and the flame jet pipe 43 are all made of stainless steel material and form a cover body for absorbing electromagnetic radiation.

[0031] Bolts and nuts are used to fasten the burner head plate 1 and the housing 2, so that the insulating plate 3 and the arc device 4 as a whole are clamped and fixed in a suitable position between the burner head plate 1 and the housing 2. By adopting such a fixing method, there is no need for bolt connection or other mechanical connection methods for the flame jet pipe 43, the ceramic pipe 42, the electrode seat 41 and the insulating plate 3, which reduces the operation procedures in the production and assembly process, improves the production efficiency and reduces the cost.

[0032] Arc discharge and plasma may both generate electromagnetic wave radiation. The burner head plate 1, the housing 2 and the flame jet pipe 43 made of stainless steel material together form a conductive cover body for absorbing electromagnetic radiation, which effectively prevents the influence of electromagnetic wave radiation on the circuit structure and also protects the operator from the influence of electromagnetic wave radiation.

[0033] A nearly sealed space is formed between the burner head plate 1 and the housing 2. The housing 2 is also provided with an intake fan 5. The gas is introduced into the interior of the housing 2 through the intake fan 5, and then enters the inner cavity of the ceramic pipe 42 through the intake groove 421, which is used to cool the arc device 4 and also serves as a working medium at the same time.

[0034] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention.

Claims

1. A stove burner for shielding electromagnetic radiation, characterized in that, It includes a burner plate, a housing disposed below the burner plate, an insulating plate disposed at the bottom inside the housing, and a plurality of arc devices; A plurality of insulating tubes corresponding to the arc devices are provided on the lower end surface of the insulating plate. The lower end surface of the insulating plate is attached to the bottom of the housing, and the insulating tubes extend downward through the bottom of the housing; The arc device includes a flame jet pipe, a ceramic tube, and an electrode base; the lower end surface of the electrode base is attached to the insulating plate, and the inner empty slot of the corresponding insulating tube is directly connected to the lower end surface of the electrode base. The annular boss at the upper end inside the ceramic tube is arranged to limit the upward movement of the electrode base, so that the electrode base is fixed inside the ceramic tube; the bottom of the flame jet pipe is disposed on the burner plate, and its upper end extends upward through the burner plate, and the bottom surface of the flame jet pipe is attached to the top surface of the corresponding ceramic tube; The burner plate and the housing are fixedly connected by bolts, and the arc device as a whole is clamped and fixed in a proper position; the burner plate, the housing, and the flame jet pipe are all made of stainless steel material and form a cover body for absorbing electromagnetic radiation.

2. The cooktop for shielding electromagnetic radiation according to claim 1, wherein, An almost sealed space is formed between the burner plate and the housing.

3. The cooktop for shielding electromagnetic radiation according to claim 1, wherein, An intake fan is also installed on the housing for supplying gas to the arc device.

4. The cooktop for shielding electromagnetic radiation according to claim 1, wherein At least one intake groove is provided at the upper end of the ceramic tube, and the intake groove communicates the inside of the housing with the inner cavity of the ceramic tube, so that gas enters the ceramic tube through the intake groove.

5. The cooktop for shielding electromagnetic radiation according to claim 1, wherein The outlet of the flame jet pipe is of a contracted shape.

6. A commercial electric flame stove, characterized in that, It includes the burner head for shielding electromagnetic radiation according to any one of claims 1-5.

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