Hearth of plasma oven

Abstract

The utility model discloses a hearth of a plasma stove. The hearth comprises a first shell, a second shell and a plurality of plasma combustors, the first shell and the second shell are encircled to form an annular hearth cavity; the hearth cavity comprises a first cavity on the inner ring and a second cavity on the outer ring, the first airflow air channel and the section of the inner wall of the hearth form a spiral structure, gas is promoted to form spiral airflow in the hearth, and the bottom of the inner wall of the hearth is in a closed state. When air enters the first airflow air channel, spiral airflow moving upwards can be generated in the hearth, the spiral airflow continuously cools the inner wall of the hearth, meanwhile, plasma flames can be collected to an effective area at the bottom of the pot body, and the utilization efficiency of fuel is effectively improved.

Description

Technical Field

[0001] The utility model particularly relates to a furnace of a plasma stove. Background Art

[0002] The electric flame stove is a new type of kitchen appliance. It utilizes advanced technology and structural design to efficiently convert electricity into heat, quickly heating food. Compared to traditional gas stoves, it offers higher energy efficiency and lower pollution emissions, making it more environmentally friendly and energy-efficient.

[0003] For example, the patent with authorization announcement number CN219624118U discloses a high-efficiency electric flame stove, including: a panel assembly, an ion needle assembly, the ion needle assembly includes an insulating base and an ion needle for connecting the circuit, the insulating base is provided with an electrode mounting seat, the ion needle is arranged on the electrode mounting seat, the insulating base is provided with an air inlet, a conductive tube assembly, the conductive tube assembly is made of metal, is conical, has a large air guide radius, and a small air outlet radius.

[0004] The air outlet of the conductive component of the prior art is in a contraction shape, thereby accelerating the flowing plasma and directly heating the wok. However, the contraction causes the heat to be too concentrated, causing local overheating or uneven heating of the wok. At the same time, in the prior art, multiple conductive tube components and ion needle components are evenly distributed on the burner. Although the bottom and the wall of the wok can be heated at the same time, in the actual cooking process, the food is usually concentrated in the center of the bottom of the wok, which not only wastes heat but also easily causes the wok wall to become burnt.

[0005] Through experimental research, the spiral plasma fire collection effect is better, the fire (heat) is not easy to escape, which is conducive to improving the utilization rate of thermal energy. In addition, the utility model also proposes a pot-shaped pot ring that can be applied to frying pans of various sizes to meet the needs of various pots in commercial kitchens. Utility Model Content

[0006] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can solve the above-mentioned problems.

[0007] A plasma stove furnace comprises a first shell, a second shell, and a plurality of plasma burners; the first shell and the second shell together form a circular furnace cavity; the furnace cavity comprises an inner first cavity and an outer second cavity, the first cavity being defined by the furnace inner wall and the furnace middle wall, and the second cavity being defined by the furnace middle wall and the furnace outer wall, the furnace inner wall, the furnace middle wall, and the furnace outer wall being coaxial about a central axis; a first fan is mounted on the furnace outer wall, the first fan being connected to the interior of the furnace inner wall via a first airflow duct, the first airflow duct and the cross-section of the furnace inner wall forming a spiral structure, thereby promoting the formation of a spiral airflow within the furnace, and the bottom of the furnace inner wall is closed;

[0008] Preferably, a plurality of plasma burners are evenly installed on the inner wall of the furnace;

[0009] Preferably, the outer wall of the furnace is further provided with a second air intake fan, and the second air intake fan is connected to the first cavity through a second air flow duct;

[0010] Preferably, the plasma burner includes a flame-spraying tube, a ceramic tube, and an electrode needle; one end of the flame-spraying tube is arranged on the inner wall of the furnace, and the other end thereof extends toward the central axis; one end of the ceramic tube is arranged in a first cavity between the inner wall of the furnace and the middle wall of the furnace, and one end of the ceramic tube is connected to the flame-spraying tube, and the other end of the ceramic tube passes through the middle wall of the furnace and extends into the second cavity;

[0011] Preferably, the electrode needle is installed in the ceramic tube, and the other end thereof extends toward the nozzle of the flame-spraying tube, and the electrode needle and the flame-spraying tube do not contact each other;

[0012] Preferably, the ceramic tube is provided with a through hole, and the through hole communicates with the first cavity and the interior of the plasma burner;

[0013] Preferably, the inner wall of the furnace is formed by connecting a first inner wall on the first shell and a second inner wall on the second shell, and a semicircular groove on the first inner wall and a corresponding semicircular groove on the second inner wall form a first mounting hole for fixing the flame-spraying tube;

[0014] Preferably, the inner wall of the furnace is composed of a first inner wall on the first shell and a second inner wall on the second shell, the middle wall of the furnace is composed of a first middle wall on the first shell and a second middle wall on the second shell, a semicircular groove on the first middle wall and a corresponding semicircular groove on the second middle wall form a second mounting hole, and the lower end of the ceramic tube extends into the second cavity through the second mounting hole;

[0015] Preferably, a pot-shaped pot ring is provided on the upper end surface of the furnace, and a plurality of strip-shaped pot racks are provided on the inner side of the pot ring, and the pot racks extend from the upper end to the lower end of the inner side of the pot ring.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] 1. When the first airflow duct of the utility model takes in air, an upward spiral airflow can be generated in the furnace. The spiral airflow continuously cools the inner wall of the furnace and at the same time can gather the plasma flame to the effective area at the bottom of the pot body, effectively improving the utilization efficiency of fuel;

[0018] 2. Multiple plasma burners are evenly installed on the inner wall of the furnace. The plasma flames ejected by each plasma burner are concentrated in the furnace, which prevents multiple plasma burners from directly heating the bottom or wall of the pot at the same time, preventing local overheating, uneven heating and heat waste;

[0019] 3. The utility model has a plurality of strip-shaped pot racks on the inner side of the pot ring, which extend from the upper end to the lower end of the inner side of the pot ring. Large-sized pots can be supported by the upper ends of the plurality of pot racks, while small-sized pots can be supported by the lower ends of the plurality of pot racks, ensuring that pots of different sizes can be placed stably above the furnace, thereby improving the applicability of commercial stoves.

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

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

[0022] Figure 1 It is a three-dimensional diagram of the present utility model.

[0023] Figure 2 It is a front view of the present utility model.

[0024] Figure 3 It is a top view of the present utility model.

[0025] Figure 4 yes Figure 2 Cross-section along line BB.

[0026] Figure 5 yes Figure 3 Cross-section along the mid-CC line. DETAILED DESCRIPTION

[0027] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating directions or positional relationships, are 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.

[0029] Furthermore, in the description of this utility model, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components; wireless connections; or wired connections. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0030] 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.

[0031] See also Figures 1 to 3 In an embodiment of the present invention, a furnace of a plasma stove includes a first shell 1, a second shell 2 and a plurality of plasma burners 3; the first shell 1 and the second shell 2 together form a circular furnace cavity;

[0032] like Figure 4-Figure 5 As shown, the furnace cavity includes an inner first cavity 100 and an outer second cavity 200. The first cavity 100 is defined by the furnace inner wall 4 and the furnace middle wall 5. The second cavity 200 is defined by the furnace middle wall 5 and the furnace outer wall 6. The furnace inner wall 4, the furnace middle wall 5 and the furnace outer wall 6 are coaxial around the central axis A.

[0033] In this embodiment, the first fan 7 is installed on the outer wall 6 of the furnace, and the first fan 7 is connected to the interior of the furnace inner wall 4 through the first air flow duct 71. The first air flow duct 71 and the cross section of the furnace inner wall 4 together form a spiral structure (see Figure 4When air enters the first airflow duct 71, a spiral airflow is generated within the furnace. Since the bottom of the furnace inner wall 4 is closed, the spiral airflow can only move upward. The upward-moving spiral airflow continuously cools the furnace inner wall 4 while concentrating the plasma flame around the central axis A of the furnace. This forms a spiral axial flame column with greater firepower at the center and less firepower around it. This allows the plasma flame to be concentrated in the effective area at the bottom of the pot, effectively improving fuel utilization efficiency.

[0034] In another embodiment, a plurality of plasma burners 3 are evenly mounted on the inner wall 4 of the furnace, and the plasma flames ejected by each plasma burner 3 converge into the furnace (see Figure 4 ), to avoid multiple plasma burners 3 directly heating the bottom or wall of the pot at the same time, to prevent local overheating, uneven heating and heat waste.

[0035] In another embodiment, the furnace outer wall 6 is further provided with a second fan 8 , which is connected to the first cavity 100 through a second air flow duct 81 , and the second fan 8 provides sufficient gas for the first cavity 100 .

[0036] In another embodiment, the plasma burner 3 includes a flame-spraying tube 31, a ceramic tube 32 and an electrode needle 33; one end of the flame-spraying tube 31 is arranged on the inner wall 4 of the furnace, and the other end thereof extends toward the central axis A; one end of the ceramic tube 32 is arranged in the first cavity 100 between the inner wall 4 of the furnace and the middle wall 5 of the furnace, and one end of the ceramic tube 32 is connected to the flame-spraying tube 31.

[0037] The other end of the ceramic tube 32 extends through the middle wall 5 of the furnace to the second cavity 200, and the interior thereof provides an insulating channel for the electrode needle 33; the electrode needle 33 is installed in the ceramic tube 32, and one end thereof extends through the ceramic tube 32 to the second cavity 200, and the electrode needle 33 is connected to the power supply through an electric wire. The connection between the electrode needle 33 and the electric wire is in the nearly sealed second cavity 200 to prevent the user from accidentally spilling soup into the furnace and causing a short circuit.

[0038] In another embodiment, the ceramic tube 32 is provided with a through hole 321, which connects the first cavity 100 and the interior of the plasma burner 3. The second fan 8 provides gas and aerodynamic force to the first cavity 100. The gas enters the interior of the plasma burner 3 through the through hole 321, and the aerodynamic force causes the plasma flame to eject out of the plasma burner 3.

[0039] In another embodiment, the furnace inner wall 4 is composed of a first inner wall 41 on the first shell 1 and a second inner wall 42 on the second shell 2. The first inner wall 41 and the second inner wall 42 are both provided with corresponding semicircular grooves and form a first mounting hole for fixing the flame-spraying tube 31.

[0040] The furnace middle wall 5 is composed of a first middle wall 51 on the first shell 1 and a second middle wall 52 on the second shell 2. The first middle wall 51 and the second middle wall 52 are both provided with corresponding semicircular grooves and form a second mounting hole. The lower end of the ceramic tube 32 extends through the second mounting hole into the second cavity 200.

[0041] The above content is the furnace structure of the utility model, which makes the furnace easy to install. First, multiple plasma burners 3 are installed in the corresponding slots on the second inner wall 42 and the second outer wall respectively, and then one end of the electrode needle 33 is connected with an electric wire and the other end of the electric wire passes through the second shell 2. Then, the first shell 1 and the second shell 2 are fixedly connected, and the slots of the first inner wall 41 and the first outer wall correspond to the slots of the second inner wall 42 and the second outer wall. The furnace assembly is completed, the process is simple, and cost is saved.

[0042] In another embodiment, a pot-shaped pot ring 9 is provided on the upper end surface of the furnace, and a plurality of strip-shaped pot racks 91 are provided inside the pot ring 9. The pot racks 91 extend from the upper end to the lower end of the inner side of the pot ring 9. Large-sized pots can be supported by the upper ends of the plurality of pot racks 91, and small-sized pots can be supported by the lower ends of the plurality of pot racks 91. This ensures that pots of different sizes can be placed stably above the furnace, thereby improving the applicability of commercial stoves (see Figure 1 and Figure 5 ).

[0043] It will be apparent 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 essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced within the present invention.

Claims

1. A furnace of a plasma stove, characterized in that: include: A first shell, a second shell and a plurality of plasma burners; the first shell and the second shell together form a circular furnace cavity; The furnace cavity comprises a first cavity of an inner circle and a second cavity of an outer circle, wherein the first cavity is defined by the furnace inner wall and the furnace middle wall, and the second cavity is defined by the furnace middle wall and the furnace outer wall, and the furnace inner wall, the furnace middle wall and the furnace outer wall are coaxial around the central axis; A first fan is installed on the outer wall of the furnace, and the first fan is connected to the inside of the inner wall of the furnace through a first air flow duct. The first air flow duct and the cross-section of the inner wall of the furnace form a spiral structure, which promotes the formation of a spiral airflow in the furnace, and the bottom of the inner wall of the furnace is in a closed state.

2. The furnace of the plasma stove according to claim 1, characterized in that: A plurality of plasma burners are evenly installed on the inner wall of the furnace.

3. The furnace of the plasma stove according to claim 2, characterized in that: The outer wall of the furnace is further provided with a second air intake fan, and the second air intake fan is connected to the first cavity through a second air flow duct.

4. The furnace of the plasma stove according to claim 3, characterized in that: The plasma burner includes a flame-spraying tube, a ceramic tube and an electrode needle; one end of the flame-spraying tube is arranged on the inner wall of the furnace, and the other end thereof extends toward the central axis; one end of the ceramic tube is arranged in a first cavity between the inner wall of the furnace and the middle wall of the furnace, and one end of the ceramic tube is connected to the flame-spraying tube, and the other end of the ceramic tube passes through the middle wall of the furnace and extends into the second cavity.

5. The furnace of the plasma stove according to claim 4, characterized in that: The electrode needle is installed in the ceramic tube, and the other end thereof extends toward the nozzle of the flame-spraying tube. The electrode needle and the flame-spraying tube do not contact each other.

6. The furnace of the plasma stove according to claim 5, characterized in that: The ceramic tube is provided with a through hole, and the through hole communicates with the first cavity and the interior of the plasma burner.

7. The furnace of the plasma stove according to claim 6, characterized in that: The inner wall of the furnace is formed by connecting the first inner wall on the first shell and the second inner wall on the second shell. The semicircular groove on the first inner wall and the corresponding semicircular groove on the second inner wall form a first mounting hole for fixing the flamethrower.

8. The furnace of the plasma stove according to claim 7, characterized in that: The middle wall of the furnace is composed of a first middle wall on the first shell and a second middle wall on the second shell. The semicircular groove on the first middle wall and the corresponding semicircular groove on the second middle wall form a second mounting hole, and the lower end of the ceramic tube extends into the second cavity through the second mounting hole.

9. The furnace of the plasma stove according to claim 8, characterized in that: A pot-shaped pot ring is provided on the upper end surface of the furnace, and a plurality of strip-shaped pot racks are provided on the inner side of the pot ring. The pot racks extend from the upper end to the lower end of the inner side of the pot ring.

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