WO2019051842A1

WO2019051842A1 - High-frequency non-inductive pot

Info

Publication number: WO2019051842A1
Application number: PCT/CN2017/102112
Authority: WO
Inventors: 陈坚胜
Original assignee: 陈坚胜; 原点私人有限公司
Priority date: 2017-09-18
Filing date: 2017-09-18
Publication date: 2019-03-21

Abstract

A high-frequency non-inductive pot comprises a pot body (11), a non-inductive coil (12) and a high-frequency alternating current power source (13). The non-inductive coil (12) is provided inside and insulated from the pot body (11), and is used to generate heat after being energized. The high-frequency alternating current power source (13) is electrically connected to the non-inductive coil (12). The high-frequency alternating current power source (13) is connected to an external power source so as to convert the external power source to a high-frequency alternating current and to output the same to the non-inductive coil (12). The high-frequency non-inductive pot has good heat conduction performance, and a temperature at an inner surface of the pot body rises quickly, such that food or water can be heated quickly or instantly.

Description

Instruction manual Name of the invention: A high frequency non-sensitive pot

Technical field

[0001] The present invention relates to a high frequency non-inductive pot.

Background technique

[0002] At present, there are three main technical means for heating, such as cooking and cooking in the kitchen.

[0003] First, natural gas or pipeline gas is used as an energy source for heating, thereby cooking and cooking. This approach uses the use of open flames for heating. The disadvantage is that the cost of pipe laying is very high, especially for the laying of pipes in some old areas.

[0004] Second, using electric furnace heating to cook vegetables and the like.

[0005] An electric furnace generally includes a container made of a material such as ceramics and a heating wire disposed around the container, the principle is that the heating wire is heated after being energized, and is transmitted to the container surrounded by the heating wire, thereby heating the food in the container. the goal of.

[0006] The disadvantages of the electric furnace are: 1 due to the thermal inertia of heat conduction, the effect of heat conduction is not good, which restricts the temperature at which the food is finally heated; in turn, to achieve a reluctant final heating temperature (for example, 300 degrees) , the heat source (such as the above-mentioned heating wire) is required to have a high temperature (for example, 1500 degrees); 2 the heating wire itself has a positive thermal resistance effect, that is, the resistance of the heating wire increases as the temperature rises, and the electric furnace The temperature of the heating wire is high during use, which makes the positive thermal resistance effect of the heating wire more obvious; and because the heating wire is actually impossible to be the equivalent resistance everywhere, the heating is caused by the positive thermal resistance effect of the heating wire. In the actual use process, the resistance of the wire may vary greatly, causing the temperature of the heating wire to be too high, and the temperature is too high. For long-term use, it is very prone to problems, such as aging.

[0007] Third, the iron cooker is placed on the induction cooker to heat the cooking and so on.

[0008] The induction cooker is invented based on the phenomenon of electromagnetic induction, that is, an alternating magnetic field which is continuously changed by the alternating current through the coil, and a vortex current appears in the inside of the conductor in the alternating magnetic field, which is a vortex electric field. Promoting the movement of carriers in the conductor; the Joule heating effect of the eddy current causes the conductor to heat up, thereby achieving heating; specifically, when the furnace surface is placed at the bottom of the iron-containing pot, the pot is cut by alternating magnetic lines of force in the pot The bottom metal portion produces an alternating current (ie, eddy current), and the eddy current causes the bottom of the pot to be in the ferrous material. The free electrons are in a swirling alternating motion, and the bottom of the pot is heated by the Joule heat of the current (P=I2*R). To sum up one sentence: The induction cooker adopts the principle of magnetic field induced eddy current heating, which uses alternating current to generate alternating current through the coil. The magnetic field, when the magnetic induction line in the magnetic field is transmitted to the bottom of the iron-containing pot, will produce numerous powerful small eddy currents, so that the pot itself will heat up quickly, and then heat the food in the pot.

[0009] Induction cooker heating to cook cooking, the disadvantages are: 1 The heating power of the eddy current is inversely proportional to the resistivity of the material itself, and the iron containing pot also has the positive thermal resistance effect mentioned above, that is, with the iron content The temperature of the pot itself rises, its resistance increases, and the resistivity increases, so that the heating power of the eddy current in the iron-containing pot has an upper limit, which is restricted; 2 the alternating magnetic field generated by the induction cooker is uneven, and the distribution of the eddy current at the bottom of the pot It is not uniform, and the material of the pot cannot be uniform. These three factors will lead to uneven temperature distribution at the bottom of the pot, that is, the temperature is high in some places, and the temperature is low in some places, resulting in hot spot effect; Where the positive thermal resistance effect is obvious, the resistance and resistivity of the place become significantly larger, so that the local part is further heated up, the hot spot effect is more obvious, and the aging problem of the pot is also accelerated; In the alternating magnetic field generated by the induction cooker, the inductance generated is large, and the reactive power consumption is very high, which makes the upper limit of the heating power of the cookware itself Efficiency is limited.

technical problem

[0010] The present invention mainly provides a high frequency non-sensitive pan.

Problem solution

Technical solution

[0011] According to a first aspect, an embodiment provides a high frequency non-inductive pot comprising a pot body, a non-inductive coil, and a high frequency AC power source; wherein:

[0012] the non-inductive coil is insulatively disposed in the pot body for heating after energization;

[0013] The high-frequency AC power source is electrically connected to the non-inductive coil, and is configured to connect an external power source and convert the external power source into a high-frequency AC power output to the non-inductive coil.

[0014] In an embodiment, the high frequency alternating current power source is used to convert the voltage of the external power source into a frequency of 8000-200.

0000 Hz, a voltage of 36-80 volts.

[0015] In an embodiment, the high frequency non-inductive pot further includes a temperature control circuit for adjusting a voltage of the high frequency alternating current power supply to the non-inductive coil according to a user input to adjust different Temperature file.

[0016] In an embodiment, the pot body is an insulator made of a material that is thermally and/or resistant to high temperatures. [0017] In an embodiment, an inner surface of the pot body is provided with an insulating coating for sealing the non-inductive coil. [0018] In an embodiment, the outer surface of the pot body is provided with Insulation coating.

[0019] In an embodiment, the pan body includes a bottom portion and a surrounding portion disposed around the bottom portion to form a semi-closed space, the non-inductive coil being disposed in a bottom portion of the pan body.

[0020] In an embodiment, the pan body includes a bottom portion and a surrounding portion disposed around the bottom portion to form a semi-closed space, the non-inductive coil being disposed within the surrounding portion of the pan body.

[0021] In an embodiment, the pot body includes a bottom portion and a surrounding portion disposed around the bottom portion to form a semi-closed space, the non-inductive coil being disposed in the bottom of the pot body and extending to the surrounding portion.

[0022] In an embodiment, the high frequency non-sensitive pan is a wok, a soup pot, a pressure cooker or a rice cooker.

Advantageous effects of the invention

Beneficial effect

[0023] According to the high-frequency non-inductive pot of the above embodiment, since the non-inductive coil is insulatively disposed in the pot body, when the non-inductive coil is heated, the thermal inertia of the heat conduction is substantially negligible, and the heat conduction effect is good; The temperature inside the surface of the pot rises quickly and can be heated quickly or instantly to food or water. In addition, because the heat sensing efficiency is high, so that it does not need too high temperature (for example, 180 degrees), the positive thermal resistance effect is not obvious; in addition, the current in the non-inductive coil is equal everywhere, unlike the induction cooker to heat the iron containing pot. Similarly, if a plurality of eddy currents are formed on the iron pot; therefore, the current in the non-inductive coil 12 is equal everywhere, and the heat distribution is uniform; in addition, since the non-inductive coil has substantially no reactance, the reactive power consumption is very low, and the pot has a very low reactive power consumption. The power can be made very high; in addition, since the high-frequency AC power source converts the external power source into a high-frequency AC power output to the non-inductive coil, in other words, the non-inductive coil 12 receives high-frequency power, and thus a skin effect is generated ( Skin effect), so that the heat is concentrated on the surface of the non-inductive coil, the heat transfer distance is significantly reduced, and the efficiency is very high; in addition, when the temperature is not increased, the resistance becomes larger, but the output of the high-frequency AC power supply is not The voltage of the sense coil is constant, so that the current in the non-inductive coil is reduced, and the current is reduced, which causes the temperature to drop, thereby forming a feedback. Maintain a constant temperature.

Brief description of the drawing

DRAWINGS

1 is a cross-sectional view of a high frequency non-inductive pan of an embodiment; 2 is a schematic structural view of a non-inductive coil of an embodiment; [0025] FIG.

3 is a schematic circuit diagram of a high frequency alternating current power supply according to an embodiment;

4 is a schematic diagram of a circuit principle of a high frequency non-inductive pot according to an embodiment;

[0028] FIG. 5 is a perspective view of a high frequency non-inductive pan of an embodiment;

[0029] FIG. 6 is a perspective view of a high frequency non-inductive pan as an example of a pressure cooker;

[0030] FIG. 7 is a schematic structural view of a high frequency non-inductive pan as a pressure cooker according to an embodiment;

[0031] FIG. 8 is a perspective view of a high frequency non-inductive pan as an electric rice cooker according to an embodiment;

9 is a schematic structural view of a high frequency non-inductive pan as an electric rice cooker according to an embodiment.

Invention 3⁄4 delete

Embodiments of the invention

DETAILED DESCRIPTION

[0034] The present invention will be further described in detail below with reference to the accompanying drawings. Similar elements in different embodiments employ associated similar component numbers. In the following embodiments, many detailed descriptions are made to enable the present application to be better understood. However, those skilled in the art can easily recognize that some of the features may be omitted in different situations, or may be replaced by other components, materials, and methods. In some cases, some of the operations related to the present application are not shown or described in the specification, in order to avoid that the core portion of the present application is overwhelmed by excessive description, and those skilled in the art will describe these in detail. Related operations are not necessary, they can fully understand the relevant operations according to the description in the manual and the general technical knowledge in the field.

In addition, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. In the meantime, the steps or actions in the method description can also be sequentially changed or adjusted in a manner apparent to those skilled in the art. Therefore, the various orders in the specification and the drawings are only for the purpose of describing a particular embodiment, and are not intended to be a necessary order unless otherwise indicated.

[0036] The serial numbers themselves for the components herein, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any order or technical meaning. The terms "connection" and "connection" as used in this application include direct and indirect connections (connections) unless otherwise stated.

[0037] Referring to FIG. 1, an embodiment of the present invention discloses a high frequency non-inductive pot, and the high frequency non-insensitive pot package The pot body 11, the non-inductive coil 12 and the high-frequency AC power source 13 are included.

[0038] The pot body 11 is used for cooking food or boiling water or the like. In one embodiment, the pot 11 is an insulator made of a material that is thermally and/or resistant to high temperatures.

[0039] In an embodiment, the pot body 11 includes a surround portion including a bottom portion and a bottom portion disposed to form a semi-enclosed space. In an embodiment, the non-inductive coil 12 is disposed within the bottom of the pan 11. In an embodiment, the non-inductive coil 12 is disposed within the surrounding portion of the pan 11. In an embodiment, the non-inductive coil 12 is disposed within the bottom of the pan 11 and extends to the surrounding portion.

[0040] For greater safety, in an embodiment, an inner surface and/or an outer surface of the pot body 11 is provided with an insulating coating for sealing the non-inductive coil 12.

[0041] In order to have a better heating effect, in an embodiment, the outer surface of the pot body 11 is provided with a thermal insulation coating.

[0042] The non-inductive coil 12 is used to generate heat after being energized. In one embodiment, the non-inductive coil 12 is a conductor such as a metal such as copper, iron, gold or silver. In one embodiment, the head and the tail of the non-inductive coil 12 are butted, and the arc is formed from the fold, that is, one end of the arc is a fold of the non-inductive coil 12, and the other end is a head of the non-inductive coil 12. Both ends of the tail. 2 is a schematic structural view of the non-inductive coil 12.

[0043] The high-frequency AC power source 13 is electrically connected to the non-inductive coil 12 for connecting an external power source and converting the external power source into a high-frequency AC power output to the non-inductive coil 12. In one embodiment, the high frequency AC power source 13 is used to convert the voltage of the external power source to a frequency of 8000-2000000 Hz and a voltage of 36-80 volts. In an embodiment, the high frequency AC power source 13 may be disposed inside the pot handle 15, for example, the pot handle 15 is formed in a hollow shape so that there is room for the high frequency AC power source 13.

Referring to FIG. 3, in an embodiment, the high frequency AC power source 13 includes a rectifying unit 13a, an inverting unit 13b, and a transforming unit 13c which are sequentially connected. The rectifying unit 13a is configured to process the external power source into a DC high voltage power, for example, the external power source may be a commercial power; the inverter unit 13b is configured to convert the DC high voltage power into a high frequency high voltage alternating current; the voltage converting unit 13c is used to convert the high frequency The high voltage alternating current is converted into a high frequency low voltage alternating current.

[0045] Referring to FIG. 4, in an embodiment, the high frequency non-sensitive pot further includes a temperature control circuit 14 for adjusting the voltage of the high frequency alternating current power source 13 outputted to the non-inductive coil 12 according to the input of the user. To adjust different temperature files. In an embodiment, both the high frequency AC power source 13 and the temperature control circuit 14 may be disposed inside the pot handle 15. [0046] Since the non-inductive coil 12 is insulatively disposed in the pot body 11, when the non-inductive coil 12 is heated, the thermal inertia of heat conduction is substantially negligible, and the heat conduction effect is good; and, the temperature of the inner surface of the pot body 11 It also rises quickly and can be heated quickly or instantly to food or water. In addition, since the heat sensing efficiency is high, so that it does not require too high a temperature (for example, 180 degrees), the positive heat resistance effect is not significant.

[0047] The currents in the non-inductive coil 12 are equal everywhere, unlike the induction cooker to heat the iron-containing pan, a plurality of vortex currents are formed on the iron pan; thus the current in the non-inductive coil 12 is equal everywhere, and the heat distribution is uniform. .

[0048] Since the non-inductive coil 12 has substantially no reactance, so that the reactive power consumption is very low, the power of the pan can be made very high.

[0049] Since the high-frequency AC power source 13 converts the external power source into a high-frequency AC power output to the non-inductive coil 12, in other words, the non-inductive coil 12 receives high-frequency power, thereby generating a skin effect (skin effect). , so that the heat is concentrated on the surface of the non-inductive coil, the heat transfer distance is significantly reduced, and the efficiency is very high.

[0050] When the temperature is increased, the resistance of the non-inductive coil 12 becomes large, but since the voltage output from the high-frequency AC power supply 13 to the non-inductive coil 12 is constant, the current in the non-inductive coil 12 is reduced, and the current is reduced. This causes the temperature to drop, thereby forming a feedback that maintains a constant temperature.

[0051]

[0052] The high frequency non-inductive pan of the present invention may be a wok, a soup pot, a pressure cooker or a rice cooker.

[0053] For example, please refer to FIG. 5, which is a perspective view of a high frequency non-sensible pan.

For example, referring to FIG. 6 and FIG. 7, in an embodiment, when the high frequency non-sensitive pan is a pressure cooker, the high frequency non-sensitive pan may further include a pressure cooker cover 24 and a housing 25, and the pressure cooker cover 24 A venting hole, a safety valve, and a sealing rubber ring may be disposed thereon; the housing 25 is for accommodating and placing the pot body 11, and the pot body 11 is placed behind the housing 25, and then the pressure cooker cover 24 is covered, which can be in the pot body 11 The space accommodated forms a high temperature and high pressure environment. In other words, in the present embodiment, the pot body 11 is used as the inner pot of the pressure cooker. In an embodiment, the high-frequency AC power source 13 and/or the temperature control circuit 14 may be disposed on the surface or inside of the housing 25, for example, after the pot body 11 is placed in the housing 25, for example, in a normal use state, The sense coil 12 is electrically connected to the high frequency AC power source 13.

For example, referring to FIG. 8 and FIG. 9, in an embodiment, when the high frequency non-sensitive pan is a rice cooker, the high frequency non-sensitive pan may further include a rice cooker cover 33 and a casing 34, and the casing 34 For accommodating and placing the pot body 11, the pot body 11 is used as a liner for the rice cooker. In an embodiment, the high frequency AC power source 13 and/or the temperature control power The road ₁₄ can be disposed on the surface or inside of the housing 34. When the pan 11 is placed in the casing 34, for example, in a normal use state, the non-inductive coil 12 is electrically connected to the high-frequency AC power source 13.

[0056]

The present invention has been described above with reference to specific examples, which are merely intended to aid the understanding of the invention and are not intended to limit the invention. Variations to the above specific embodiments may be made by those skilled in the art in light of the teachings of the present invention.

Claims

Claim

A high frequency non-inductive pot characterized by comprising a pot body, a non-inductive coil and a high frequency alternating current source; wherein:

The non-inductive coil is insulatively disposed in the pot body for heating after energization;

The high-frequency AC power source is electrically connected to the non-inductive coil, and is configured to connect an external power source and convert the external power source into a high-frequency alternating current output to the non-inductive coil.

The high-frequency non-inductive pan according to claim 1, wherein said high-frequency AC power source is used to convert a voltage of an external power source into a voltage of 8000-2000000 Hz and a voltage of 36-80 volts.

The high frequency non-inductive pan according to claim 1, further comprising a temperature control circuit

And adjusting the voltage of the high-frequency AC power output to the non-inductive coil according to the input of the user to adjust different temperature files.

The high frequency non-inductive pan according to any one of claims 1 to 3, wherein the pan is an insulator made of a material that conducts heat and/or is resistant to high temperatures.

The high frequency non-inductive pan according to claim 4, wherein an inner surface of the pot body is provided with an insulating coating for sealing the non-inductive coil.

The high frequency non-inductive pan according to claim 1, wherein the outer surface of the pan body is provided with a heat insulating coating.

A high frequency non-inductive pan according to claim 1, wherein said pan body includes a bottom portion and a surrounding portion disposed around the bottom portion to form a semi-closed space, and said non-inductive coil is disposed in a bottom portion of the pan body.

A high-frequency non-inductive pan according to claim 1, wherein said pan body includes a bottom portion and a surrounding portion disposed around the bottom portion to form a semi-closed space, and said non-inductive coil is disposed in a surrounding portion of the pan body.

The high frequency non-inductive pan according to claim 1, wherein the pan body comprises a bottom portion and a surrounding portion disposed around the bottom portion to form a semi-closed space, the non-inductive coil being disposed in a bottom portion of the pan body and Extend to the surrounding area.

The high frequency non-inductive pan according to claim 1, wherein said high frequency non-sensitive pan For wok, soup pot, pressure cooker or rice cooker.