WO2020015155A1

WO2020015155A1 - Electric heating device and electric flame cooker

Info

Publication number: WO2020015155A1
Application number: PCT/CN2018/106675
Authority: WO
Inventors: 卢驭龙
Original assignee: 卢驭龙
Priority date: 2018-07-16
Filing date: 2018-09-20
Publication date: 2020-01-23

Abstract

An electric heating device and an electric flame cooker. An electric arc generated by an electric heating device through a gas outlet assembly (50) can break down external air delivered from a gas extraction assembly (10) to form a plasma gas flow, the plasma gas flow being dischargeable from a gas outlet end of the gas outlet assembly (50) to form a plasma flame which can heat cookware (40), thereby replacing gas fuel used in a gas stove, and greatly improving the use safety of the electric heating device. By means of inserting the gas outlet assembly (50) into a first heat insulating member (20) and a second heat insulating member (30), the plasma gas flow discharged from the gas outlet assembly (50) can be effectively separated from the external air, improving the heating efficiency of the electric heating device. By means of providing a filtering structure (70) in an exhaust pipeline, the exhaust gas discharged from the exhaust pipeline can be initially filtered, and harmful gas, etc. in the exhaust gas can be filtered and purified, reducing the harm to the human body due to the exhaust gas leaking from the electric heating device.

Description

Electric heating device and electric flame range

[0001] This application is based on a Chinese patent application with an application number of 201821137670.8 and a filing date of July 16, 2018, and claims its priority. The entire contents of this application are incorporated herein as a whole.

[0002] Technical Field

[0003] The present application belongs to the technical field of electric heating, and in particular, relates to an electric heating device and an electric flame stove.

[0004] Background Art

[0005] Currently, electric stoves are used as a source of energy to generate heat for heating. They are convenient and safe and are widely used in various fields. There are mainly three types of electric heating cookers: 1. Induction cookers; Induction cookers use electromagnetic induction In principle, the surface of the induction cooker is a heat-resistant ceramic plate, and a pot made of ferromagnetic material is placed on the heat-resistant ceramic. A coil is placed below. The control circuit of the induction cooker generates an alternating current flowing through the coil to generate a magnetic field. The magnetic field lines pass through the iron. The bottom of the magnetic pot, the bottom of the ferromagnetic pot will generate eddy current, which will cause the bottom of the pot to quickly generate heat and achieve high temperature, to achieve the heating function. 2. Electric ceramic stove; Place the resistance wire in the lower part of the cooker. After the resistance wire is energized, it will generate high temperature, and the high-temperature resistance wire will glow. The bottom of the cooker will be heated mainly by heat radiation. 3. Halogen lamp stove; a halogen lamp is placed in the lower part of the cooker, and the halogen lamp emits infrared heat radiation when it is energized to heat the item.

[0006] However, the existing electric heating cooker has the following problems: 1. The principle of electromagnetic heating requires that the cooker must be made of ferromagnetic material, otherwise the heating function cannot be achieved, there are restrictions on the material of the cooker, and some cooking forms cannot be achieved (such as Some cooking methods using ceramic containers cannot be heated by induction cookers). In addition, the bottom of the ferromagnetic cooker can only generate heat when it is directly facing the upper part of the coil. There is no heat generation in the other parts of the cooker without the coils facing directly, which leads to insufficient heating uniformity of the cooker. It is cold and has an effect on cooking. The “fire pot” that does not reach gas heating has a very uniform heating effect. 2. The electric ceramic stove and the Nansu lamp stove both use the heat radiation method to heat the pot. Although these two heating methods have no restrictions on the material of the pot, they can heat pots of various materials, including ceramic containers, but radiant heating. The method is still very different from the traditional gas flame heating method, and it can not achieve a very uniform heating effect of the traditional fired "fired pot".

[0007] Application Contents [0008] The object of the present application is to provide an electric heating device, which aims to solve the technical problem of uneven electric heating in the prior art.

[0009] In order to achieve the above object, the technical solution adopted in this application is: an electric heating device, the electric heating device includes an air outlet component for generating an electric arc to penetrate air to form a plasma airflow and heating the kitchenware, and An air-exhaust module for transmitting external air to the air-exhaust module, and a heat-insulation section for thermally insulating the plasma airflow discharged from the air-exhaust module, a closed heat-insulation cavity is formed in the heat-insulation section, The heat insulation cavity is completely filled with a heat insulator, the air outlet component is plugged in the heat insulation part, the air extraction component is in communication with the air outlet component, and the heat insulation part is provided with a through hole. Exhaust ducts at the top and bottom of the hot section, the exhaust duct is provided with a filtering structure for filtering the exhaust gas.

[0010] Further, the filtering structure includes a filtering baffle, and a receiving cavity is provided between the filtering baffles, and a filtering sponge is provided in the receiving cavity, and the filtering sponge is in interference fit with the receiving cavity.

[0011] Further, the filtering structure is provided with a plurality of the accommodating cavities arranged side by side, and the plurality of the accommodating cavities are arranged at equal intervals.

[0012] Further, activated carbon is adsorbed inside the filter sponge.

[0013] Further, the heat insulation part includes a first heat insulation part and a second heat insulation part located on top of the first heat insulation part, and the first heat insulation part is spaced from the second heat insulation part It is provided that one end of the air outlet component is inserted into the first heat insulator, the other end of the air outlet component is inserted into the second heat insulator, and the first heat insulation member is provided with a first An exhaust hole, a second exhaust hole is provided on the second heat insulator, the first exhaust hole communicates with the second exhaust hole to form the exhaust duct, and the filter structure is disposed on the Inside the exhaust duct and near the first exhaust hole.

[0014] Further, the electric heating device includes a plurality of the air outlet components arranged in a ring shape, each of the air outlet components is connected to the air extraction component and is arranged at an evenly spaced interval, and each of the second exhaust gas The height of the hole is higher than the height of the air outlet of the air outlet component.

[0015] Further, each of the air outlet components includes an air inlet head for communicating with the air extraction component, a gas jet pipe for discharging the plasma gas flow, a cover plate sleeved on one end of the gas jet pipe, and a sleeve. An ion head provided at the other end of the air jet tube and an electrode for forming an arc with the ion head to penetrate the air, the air inlet head has a receiving chamber for receiving the electrode, and the cover plate Covering the accommodating chamber, the air-jet tube is in communication with the accommodating chamber. [0016] Further, the air extraction assembly includes a gas collection chamber for storing air and an air extraction member for drawing external air into the gas collection chamber, and the gas collection chamber is provided with a plurality of exhausts. Each of the air inlets is in communication with an air outlet.

[0017] Further, the air extraction member is any one of a blower, an axial flow fan, an air pump, and a fan.

[0018] Beneficial effects of the present application: The electric heating device of the present application can break through the external air delivered by the air extraction component to form a plasma flow through the arc generated by the air outlet component. Plasma flames can further heat kitchen utensils, which can replace gas fuels used in gas stoves, which can greatly improve the safety of electric heating devices. By inserting the gas outlet components on the heat insulation part, a closed air-tightness is formed in the heat insulation part. Insulation cavity. The insulation cavity is completely filled with a heat insulator. The heat insulation part can effectively separate the high-temperature plasma airflow discharged from the gas outlet component from the external air. The temperature variation of the plasma gas flow is small, so that the thermal efficiency of the electric heating device can be improved. By opening an exhaust pipe in the heat insulation part, the exhaust gas after the plasma gas flow is exhausted through the exhaust pipe, and the exhaust gas is recovered by an external exhaust gas treatment device connected to the exhaust pipe, and then passed through the exhaust pipe. A filtering structure is provided for the primary filtering of the exhaust gas. The exhaust gas discharged from the exhaust pipe can be filtered for the first time. The harmful gas and the like in the exhaust gas can be filtered and purified, and the harm of the exhaust gas from the electric heating device to the human body can be reduced.

[0019] The present application further provides a heating range, including the above-mentioned electric heating device, and further including a stove body for installing the electric heating device.

[0020] The heating stove of the present application, because the arc generated by the gas outlet component of the electric heating device can penetrate the external air sent by the gas extraction component to form a plasma flow, and the plasma gas flow can be discharged from the gas outlet end of the gas outlet component to form a plasma flame. In addition, the kitchenware can be heated, and by opening an exhaust pipe on the heat insulation part, the exhaust gas after the plasma airflow is exhausted can be discharged through the exhaust pipe, and the exhaust gas can be recovered through an external exhaust gas treatment device connected to the exhaust pipe. Furthermore, by providing a filtering structure for the primary filtering of the exhaust gas in the exhaust pipe, the primary filtering of the exhaust gas discharged from the exhaust pipe can be performed, and the harmful gases and the like in the exhaust gas can be filtered and purified, thereby reducing the exhaust gas from being electrically heated. Harm to the human body caused by device leakage.

BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to explain the technical solutions in the embodiments of the present application more clearly, the drawings used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are merely Some embodiments of the present application, for those skilled in the art, can obtain other drawings according to the drawings without paying creative labor.

[0023] FIG. 1 is a schematic structural diagram of an electric flame range provided by an embodiment of the present application;

2 is a schematic structural diagram of an electric heating device according to an embodiment of the present application;

[0025] FIG. 3 is a schematic exploded structure diagram of an electric heating device according to an embodiment of the present application;

[0026] FIG. 4 is a schematic structural diagram of an air extraction component according to an embodiment of the present application;

[0027] FIG. 5 is a schematic diagram of an exploded structure of an air outlet component according to an embodiment of the present application;

[0028] FIG. 6 is a first structural schematic view of a first heat insulator provided in an embodiment of the present application;

[0029] FIG. 7 is a schematic structural diagram of a second heat insulation member according to an embodiment of the present application;

[0030] FIG. 8 is a schematic cross-sectional structure diagram of a second heat insulator provided in an embodiment of the present application;

9 is a schematic structural diagram of a filtering structure according to an embodiment of the present application.

[0032] Wherein, each reference numeral in the figure:

[0033] 10-exhaust assembly; 11 a collection chamber; 12-exhaust parts; 111 an exhaust part;

[0034] 20—the first heat insulating member; 21—the magnetic member; 23—the first cavity; 231—the first through hole; 24—the first row of air holes;

[0035] 30—the second heat insulator; 31—the second chamber; 311—the second through hole; 32—the second exhaust hole;

[0036] 40-kitchenware;

[0037] 50-exhaust assembly; 51-air inlet; 52-jet tube; 53-cover plate; 54-air outlet;

[0038] 55-electrode; 511-accommodating room;

[0039] 60—support frame;

[0040] 70—filter structure; 71—filter baffle; 711—accommodating cavity; 72—filter sponge.

DETAILED DESCRIPTION

[0042] The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to FIGS. 1 to 9 are exemplary and are intended to explain the present application, and should not be construed as limiting the present application.

[0043] In the description of this application, it should be understood that the terms “length”, “width”, “upper”, “lower”, and “front”

, "Back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. or The positional relationship is based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, structure and operation in a specific orientation, Therefore, it cannot be understood as a limitation on this application.

[0044] In addition, the terms “first” and “second” are used for descriptive purposes only, and should not be interpreted as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "a plurality" is two or more, unless it is specifically and specifically defined otherwise.

[0045] In this application, the terms "installation", "connected", "connected", "fixed" and other terms shall be understood in a broad sense unless specified and limited otherwise. For example, they may be fixed connections or may be Removable connection, or integration; it can be mechanical or electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

[0046] As shown in FIGS. 1-9, the electric heating device includes an air outlet assembly 50 for generating an electric arc to penetrate air to form a plasma airflow and heating the kitchenware 40, and is used to deliver external air to the air outlet. The air extraction module 10 of the module 50 and a heat insulation section (not shown in the figure) for heat insulation of the plasma airflow discharged from the air outlet module 50. A closed heat insulation cavity (not shown in the figure) is formed in the heat insulation section. The heat insulation cavity is completely filled with a heat insulator (not shown in the figure). The air outlet component 50 is plugged into the heat insulation part, the air extraction component 10 communicates with the air outlet component 50, and the heat insulation part is provided with a through heat insulation part. Exhaust ducts at the top and bottom of the housing, the exhaust duct is provided with a filtering structure 70 for filtering exhaust gas.

[0047] The electric heating device of the embodiment of the present application can break through the external air delivered by the air extraction component 10 to form a plasma flow through the arc generated by the gas outlet component 50. The plasma air flow can be discharged from the gas outlet end of the gas outlet component 50 to form a plasma. The flame can further heat the kitchen utensil 40, which can replace the gas fuel used in the gas stove, and can greatly improve the safety of the electric heating device. By inserting the gas outlet assembly 50 on the heat insulation part, a seal is formed in the heat insulation part. The heat-insulating cavity is completely filled with a heat-insulating body. The heat-insulating part can effectively separate the high-temperature plasma airflow discharged from the air outlet component 50 from the outside air, and the air-space high-temperature plasma airflow is less affected by the external air. The temperature change of the high-temperature plasma gas flow is small, so the thermal efficiency of the electric heating device can be improved. By opening an exhaust duct in the heat insulation section, The exhaust gas exhausted after the plasma stream is exhausted, and the exhaust gas is recovered by an external exhaust gas treatment device connected to the exhaust pipe, and a filtering structure 70 for primary filtering of the exhaust gas is provided in the exhaust pipe, and the The exhaust gas discharged from the pipeline is filtered for the first time, which can filter and purify the harmful gases in the exhaust gas, and reduce the harm to the human body caused by the leakage of exhaust gas from the electric heating device.

[0048] Further, as shown in FIG. 9, in this embodiment, the filtering structure 70 includes a filtering baffle 71, and a receiving cavity 711 is provided between the filtering baffles 71, and a filtering sponge 72 and a filtering sponge are provided in the containing cavity 711. 72 is in interference fit with the receiving cavity 7 11. The filtering baffle 71 is provided to make the filtering structure 70 have a certain strength. Then, by opening a receiving cavity 711 in the filtering baffle 71, the filtering sponge 72 for filtering harmful gas can be fixed in the receiving cavity 711, so that it can be used in use. The stability of the filtering structure 70 is high during the process, and the service life of the filtering structure 70 is guaranteed.

[0049] Further, as shown in FIG. 9, in this embodiment, a plurality of accommodating cavities 711 disposed side by side are provided in the filtering structure 70, and the plurality of accommodating cavities 711 are arranged at equal intervals. By providing a plurality of receiving chambers 711 to fix the plurality of filtering sponges 72, the filtering and purifying effect of the filtering structure 70 is better.

[0050] Further, as shown in FIG. 9, in this embodiment, activated carbon is adsorbed inside the filtering sponge 72. Activated carbon can adsorb harmful gases and impurities on the activated carbon, which makes the filtering and purification of exhaust gas better.

[0051] Further, as shown in FIGS. 2 to 8, in this embodiment, the heat insulation part includes a first heat insulation member 20 and a second heat insulation member 30 on top of the first heat insulation member 20. The heat piece 20 is spaced apart from the second heat insulation piece 30. One end of the air outlet component 50 is inserted into the first heat insulation piece 20, and the other end of the air outlet component 50 is inserted into the second heat insulation piece 30. A first exhaust hole 24 is provided on the member 20, and a second exhaust hole 32 is provided on the second heat insulation member 30. The first exhaust hole 24 communicates with the second exhaust hole 32 to form an exhaust pipe, and the filter structure 70 It is disposed in the exhaust duct and is near the first exhaust hole 24. Specifically, the first heat-insulating member 20 and the second heat-insulating member 30 are detachably fixed, so that the first heat-insulating member 20 and the second heat-insulating member 30 can be disassembled for maintenance inspection or cleaning, and can be replaced. A heat insulator provided in the heat insulation cavity. Due to the high temperature of the plasma gas flow, the filter structure 70 is arranged in the exhaust duct and close to the first exhaust hole 24, and the exhaust gas can be brought into contact with the filter structure 70 after the temperature of the exhaust gas has cooled down in the heat insulation section, so as to avoid high temperature. Damage makes the life of the insulation longer.

[0052] Further, as shown in FIGS. 2 to 8, in this embodiment, the first heat insulator 20 has a bowl-shaped first cavity 23, and the second heat insulator 30 has a bowl-shaped second Chamber 31, with first chamber 23 and second chamber 31 in between Separately, the second heat insulation member 30 covers the first cavity 23 to form a heat insulation cavity. The periphery of the first cavity 23 is provided with a plurality of first through holes 231 for supporting the 50-ends of each air outlet component. The second cavity A plurality of second through holes 311 corresponding to the other end of the corresponding air outlet component 50 are defined in the periphery of the chamber 31. Specifically, each of the air outlet components 50 is inserted into the first through hole 231 of the first chamber 23 and continues to be inserted into the second through hole 311 corresponding to the second chamber 31. In this structure, the first heat insulation member 20 and the second heat insulation member 30 play a dual heat insulation function, and the high-temperature air flow ejected from each of the air outlet assemblies 50 is condensed in the second chamber 31, and from the second chamber 31 The open end heats the kitchenware 40. Since the second chamber 31 and the external environment are blocked by the first and second heat insulators 20 and 30, the high-temperature air flow is less affected by the external environment, and the electric heating device has higher thermal efficiency.

[0053] Further, as shown in FIG. 3, in this embodiment, the electric heating device includes a plurality of air outlet components 50 arranged in a ring shape, and each of the air outlet components 50 is connected to the air extraction component 10 and is evenly spaced. The height of each second exhaust hole 32 is higher than the height of the air outlet of the air outlet assembly 50. After the combustion of the air is completed, the formed exhaust gas will be squeezed upward by the plasma airflow from the air outlet assembly 50, and the height of the second exhaust hole 32 is higher than the height of the air outlet, so that the exhaust gas can be discharged to the exhaust pipe, and further Exhaust gas can be filtered and purified by the filtering structure 70

[0054] Further, as shown in FIG. 5, in this embodiment, each of the air outlet components 50 includes an air inlet 51 for communicating with the air extraction component 10, a gas injection pipe 52 for exhausting a plasma gas stream, and is sleeved on A cover plate ₅₃ at the end of the air-jet tube 52, an ion head sleeved on the other end of the air-jet tube 52, and an electrode 55 for cooperating with the ion head to form an arc to penetrate the air, and the air inlet 51 has an accommodation for accommodating the electrode 55 The chamber 511 and the cover 53 cover the accommodating chamber 511, and the air jet tube 52 communicates with the accommodating chamber 511. The air extraction component 10 transmits the external air to the accommodation chamber 511 through the air inlet channel, and the electrode 55 cooperates with the ion head to generate an arc and penetrate the air to form a plasma airflow, and is discharged through the air injection pipe 52 to heat the kitchenware 40.

[0055] Further, as shown in FIG. 4, in this embodiment, the air extraction assembly 10 includes a air collection chamber 11 for storing air and an air extraction member 12 for drawing external air into the air collection chamber 11 The air collection chamber 11 is provided with a plurality of exhaust holes 111, and each of the air inlets 51 is in communication with one exhaust hole 111. The gas collection chamber 11 is a hollow sealed chamber, and the air extraction member 12 is in communication with the gas collection chamber 11. Here, the air extractor 12 is preferably any one of an axial fan, an air pump, and a fan. A plurality of exhaust holes 111 are evenly distributed on the plenum chamber 11, each exhaust hole 111 is in communication with a corresponding air inlet passage, and the air inlet channel is in communication with a corresponding accommodating chamber 511. With this structure, the air extraction member 12 draws external air to The air chamber 11 is evenly divided into the accommodating chambers 511 of the air outlet components 50 through the exhaust holes 111, so that the high-temperature plasma air flow of the air outlet components 50 is uniform. In other embodiments, the air extraction member 12 may also be other air extraction equipment, which is not limited here.

[0056] Further, in this embodiment, a support frame 60 for supporting the kitchenware 40 is also provided above the second heat insulation member 30.

[0057] As shown in FIG. 1, the present application further provides a heating range, including the above-mentioned electric heating device, and further including a stove body for installing the electric heating device.

[0058] In the heating stove of the present application, the arc generated by the air outlet component 50 of the electric heating device can penetrate the external air sent from the air extraction component 10 to form a plasma flow, and the plasma air flow can be discharged from the air outlet end of the air outlet component 50 A plasma flame is formed, and the kitchenware 40 can be heated. By opening an exhaust pipe in the heat insulation part, the exhaust gas after the plasma airflow is exhausted can be discharged through the exhaust pipe, and the external exhaust gas connected to the exhaust pipe can be discharged. The treatment device recovers the exhaust gas, and a filtering structure 70 for primary filtering of the exhaust gas is provided in the exhaust pipe, so that the exhaust gas discharged from the exhaust pipe can be filtered first, and harmful gases and the like in the exhaust gas can be filtered and purified. Harm to human body caused by leakage of exhaust gas from electric heating device.

[0059] The above are only preferred embodiments of this application, and are not intended to limit this application. Any modification, equivalent replacement, and improvement made within the spirit and principles of this application shall be included in this application. Within the scope of protection.

Summary of invention

technical problem

Problem solution

The beneficial effects of the invention

Claims

Claim

[Claim 1] An electric heating device, characterized in that: the electric heating device includes an air outlet component for generating an electric arc to penetrate air to form a plasma gas flow and heating the kitchenware, and is used to deliver external air to the air outlet An air extraction module of the module, and a heat insulation section for heat insulation of the plasma airflow discharged from the air outlet module, a closed heat insulation cavity is formed in the heat insulation portion, and the heat insulation cavity is completely filled with A heat insulator, the air outlet component is plugged in the heat insulation part, the air extraction component is in communication with the air outlet component, and the heat insulation part is provided with an exhaust gas passing through the top and bottom of the heat insulation part A pipe, wherein the exhaust pipe is provided with a filtering structure for filtering exhaust gas.

[Claim 2] The electric heating device according to claim i, characterized in that: the filtering structure comprises a filtering baffle, a receiving cavity is provided between the filtering baffles, and a filtering sponge is provided in the receiving cavity, The filter sponge is in an interference fit with the receiving cavity.

[Claim 3] The electric heating device according to claim 2, characterized in that: the filtering structure is provided with a plurality of the accommodating chambers arranged side by side, and a plurality of the accommodating chambers are arranged at equal intervals.

[Claim 4] The electric heating device according to claim 3, wherein activated carbon is adsorbed inside the filter sponge.

[Claim 5] The electric heating device according to claim 4, wherein the heat insulation part includes a first heat insulation member and a second heat insulation member on top of the first heat insulation member, and A first heat insulator is spaced from the second heat insulator, one end of the air outlet component is inserted into the first heat insulator, and the other end of the air outlet component is inserted into the second heat insulation. On the component, a first exhaust hole is provided on the first heat insulator, a second exhaust hole is provided on the second heat insulator, and the first exhaust hole and the second exhaust hole are provided. The exhaust duct is communicated with each other, and the filtering structure is disposed in the exhaust duct and near the first exhaust hole.

[Claim 6] The electric heating device according to claim 5, characterized in that: the electric heating device includes a plurality of the air outlet components arranged in a ring shape, and each of the air outlet components and the air extraction component The height of each second exhaust hole is higher than the height of the air outlet of the air outlet component.

[Claim 7] The electric heating device according to claim 6, characterized in that each of the air outlet component packages Including an air inlet for communicating with the air extraction component, an air jet pipe for exhausting the plasma gas flow, a cover plate sleeved at one end of the air jet pipe, and an ion head sleeved at the other end of the air jet pipe And an electrode for cooperating with the ion head to form an arc to penetrate air, the air inlet head has a receiving chamber for receiving the electrode, the cover plate covers the receiving chamber, and The air jet pipe is in communication with the accommodation chamber.

[Claim 8] The electric heating device according to claim 7, characterized in that: the air extraction assembly includes a gas collection chamber for storing air and a gas extraction chamber for drawing external air into the gas collection chamber. For air parts, a plurality of exhaust holes are provided on the air collection chamber, and each of the air inlets is in communication with one of the exhaust holes.

[Claim 9] The electric heating device according to claim 8, wherein the air extraction member is any one of a blower, an axial fan, an air pump, and a fan.

[Claim 10] The heating range comprises the electric heating device according to any one of claims 1-9, and a cooking body for mounting the electric heating device.