Heatable vacuum heat preservation kettle

Abstract

According to the heatable vacuum heat preservation kettle, a metal inner container and a non-metal shell are vacuumized and brazed into an integrated structure, so that an induction cooker can directly act on the heat preservation kettle inner container through the heat preservation kettle shell to boil water; due to the design of the pressure relief kettle cover, pressure can be relieved through the pressure relief kettle cover during water boiling, and safety is guaranteed; after water is boiled, long-time heat preservation can be achieved through a vacuum structure; by means of an external electromagnetic induction heating mode, no heating or electronic component needs to be used inside, and the stability and economical efficiency of the structure are both considered; and meanwhile, water is heated in a vacuum heat preservation state, so that more energy is saved.

Description

Technical Field

[0001] The present invention relates to the field of vacuum insulation pots, and in particular to a vacuum insulation pot that can be used for electromagnetic induction heating. Background Art

[0002] The existing vacuum insulated kettles on the market can only be used to keep warm or cold, and do not have the function of electromagnetic induction heating and boiling water, and the usage scenarios are single; some insulated kettles with heating functions need to have an opening at the bottom or leave a non-vacuum heating surface, and are only covered by a vacuum layer on all sides. After the heating stops, the temperature of such a structure drops quickly, and frequent heating operations may be required. In addition, the built-in heating element makes the kettle body large and bulky, and the convenience is not good; For example, some kettles with short-term heat preservation functions, etc. The technical solution disclosed in Chinese Patent Publication No.: CN204091706U discloses a heatable vacuum insulated kettle. This solution is to use a non-metallic material that cannot be heated by electromagnetic induction to make the main body of the double-layer vacuum insulated kettle, and place a magnetic heating plate that can be heated by electromagnetic induction in the inner layer of the main body. This technical solution has the following problems: The non-magnetic conductive material of the container body, which cannot be heated by electromagnetic induction and does not block electromagnetic induction heating, is usually a non-metallic material, and non-metallic materials such as glass, ceramics and other materials are fragile and bulky as a whole, and are difficult to process and vacuumize, and are not suitable for use as a container as a whole; The non-magnetic conductive material used to make the container also includes plastics. This type of material is used to make the main body of the vacuum insulated kettle, which is easily deformed and concave due to insufficient strength and cannot support the atmospheric pressure outside the vacuum layer, thereby losing the vacuum insulation function; In addition, due to the detachable design of the magnetic heating plate, this technical solution may be easy to lose or difficult to clean, so this invention has obvious limitations and a narrow range of application. Summary of the invention

[0003] Technical problem to be solved: The purpose of the present invention is to provide a heatable vacuum insulation kettle in view of the shortcomings of the prior art. The metal inner liner and the non-metal outer shell are vacuum-brazed and welded into one structure, so that the induction cooker can directly act on the inner liner of the insulation kettle through the outer shell of the insulation kettle to boil water; coupled with the design of the pressure relief kettle cover, the pressure can be released through the pressure relief kettle cover when boiling water to ensure safety; after the water is boiled, the vacuum structure can be used to keep the water warm for a long time; relying on the external electromagnetic induction heating method, there is no need to use any heating and electronic components inside, taking into account the stability and economy of the structure; at the same time, heating and boiling water under the vacuum insulation state also has the advantage of being more energy-saving.

[0004] Means of solving technical problems: A heatable vacuum insulation pot according to an embodiment of the present invention for solving the above technical problem is characterized by comprising: The liner is made of metal material and can be heated by electromagnetic induction; The outer shell is partially or entirely made of non-metallic material and cannot be heated by electromagnetic induction. The outer shell is larger than the inner liner to accommodate the inner liner. The inner liner is bonded or welded to the outer shell as a whole. A vacuum layer, located between the inner container and the outer shell; The pressure relief kettle cover is located at the opening of the inner liner to close the inner liner.

[0005] Preferably, the metal material is ferromagnetic stainless steel or alloy, or non-magnetic stainless steel or alloy coated with ferromagnetic material.

[0006] Preferably, the non-metallic material is high borosilicate glass, ceramics, or modified plastics, which can be integrally made into the shell or partially applied to the bottom and above the bottom of the shell, and the covering height is ≥ 3 cm.

[0007] Preferably, the vacuum layer has a thickness of 2-15 mm and a vacuum degree of ≤10-0.1 Pa.

[0008] Preferably, the pressure relief kettle cover is made in the form of threads, buckles, flip covers, etc. that match the opening of the inner liner, and has a spring pressure relief device. When the air pressure in the kettle is greater than the atmospheric pressure, it is discharged outward through the spring pressure relief device.

[0009] Effects of the invention: A heatable vacuum insulated kettle according to an embodiment of the present invention: a structure in which a metal inner liner and a non-metal outer shell are vacuum-brazed and integrated, so that an induction cooker can directly act on the inner liner of the thermos kettle through the outer shell of the thermos kettle to boil water; coupled with the design of a pressure relief kettle cover, pressure can be released through the pressure relief kettle cover when boiling water, ensuring safety; after the water is boiled, the vacuum structure can be used to keep the water warm for a long time; relying on external electromagnetic induction heating, no heating or electronic components are required inside, taking into account the stability and economy of the structure; at the same time, heating and boiling water in a vacuum insulation state also has the advantage of being more energy-efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] FIG1 is a vertical cross-sectional view of a heatable vacuum pot according to an embodiment of the present invention; FIG2 is a cross-sectional view of a heatable vacuum pot according to an embodiment of the present invention; FIG3 is a vertical cross-sectional view of a heatable vacuum flask shell in an embodiment of the present invention when the non-metallic material is only partially applied; FIG4 is a schematic diagram of electromagnetic induction heating of a heatable vacuum pot according to an embodiment of the present invention; Explanation of symbols 1-Inner pot / metal material, 2-Outer shell / non-metal material, 3-Vacuum layer, 4-Pressure relief lid, 5-Outer shell / metal material, 6-Induction cooker panel, 7-Coil, 8-Magnetic lines of force, 9-Eddy current.

[0011] Specific implementation: The embodiments of the present invention are described below with reference to the accompanying drawings.

[0012] As shown in FIGS. 1 to 3 , a heatable vacuum insulated kettle according to an embodiment of the present invention comprises an inner liner (1), and the inner liner (1) can be made into a shape such as a cup, a bowl, a frying pan, etc. that can hold heated objects.

[0013] Here, the object to be heated may be a fluid to be heated, food to be cooked, or a chemical substance to be heated, and the type of the object to be heated is not limited; and the inner pot (1) may be made entirely of a metal material that can be heated by electromagnetic induction, and the metal material that can be heated by electromagnetic induction may be stainless steel or alloy having ferromagnetism, or non-magnetic stainless steel or alloy coated with ferromagnetic material.

[0014] Furthermore, the heatable vacuum flask of the embodiment of the present invention comprises an outer shell (2), the non-metallic material of the outer shell (2) is high borosilicate glass, ceramics, modified plastics, which can be integrally made into the outer shell or partially applied to the bottom and above the bottom of the outer shell, and the covering height is ≥3 cm.

[0015] Furthermore, the heatable vacuum insulation pot of the embodiment of the present invention comprises a vacuum layer (3), the thickness of the vacuum layer (3) is 2-15 mm, the vacuum degree is ≤10-0.1 Pa, and heat insulation can be achieved through vacuum.

[0016] In addition, the vacuum layer (3) can be a gap space formed by the inner liner (1) and the outer shell (2). The vacuum layer (3) can be in a state where the internal air is extracted from the outside and then sealed by bonding or brazing. The vacuum layer (3) can have a getter (not shown) that absorbs residual gas in order to form a high vacuum.

[0017] Here, the vacuum layer (3) blocks heat convection through vacuum, thereby being able to insulate heat between the inner liner (1) and the outer shell (2); and in order to isolate heat radiation, the inner surface or outer surface of the inner liner (1) may be plated with copper or silver.

[0018] Furthermore, the heatable vacuum insulated kettle of the embodiment of the present invention comprises a pressure relief kettle cover (4), which is made into a thread, a buckle, a flip cover or the like that matches the opening of the inner pot, and has a spring pressure relief device. When the air pressure in the kettle is greater than the atmospheric pressure, it is discharged to the outside through the spring pressure relief device.

[0019] The inner liner (1) of the heatable vacuum insulation kettle of the embodiment of the present invention is made of a ferromagnetic metal material that is easily heated by electromagnetic induction, and can be applied to a variety of different electromagnetic cookers. The vacuum layer (3) is used to achieve vacuum insulation. The outer shell (2) is made of a non-metallic material that does not block electromagnetic induction heating, so that the electromagnetic cooker can directly heat the inner liner (1) through the outer shell (2) and the vacuum layer (3). In addition, the design of the pressure relief lid (4) allows the vacuum insulation kettle to release pressure through the pressure relief lid (4) when boiling water, thereby ensuring safety in use. After the water is boiled, the vacuum structure can be used to keep the water warm for a long time. By relying on the external electromagnetic induction heating method, no heating or electronic components are required inside, and the stability and economy of the structure are taken into consideration. At the same time, heating water in the vacuum insulation state also has the advantage of being more energy-efficient.

[0020] The above-described embodiments only express part of the implementation methods of the present invention, and the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A heatable vacuum insulated kettle, characterized in that: include: The liner is made of metal material and can be heated by electromagnetic induction; The outer shell is partially or entirely made of non-metallic material and cannot be heated by electromagnetic induction. The outer shell is larger than the inner liner to accommodate the inner liner. The inner liner is bonded or welded to the outer shell as a whole. A vacuum layer, located between the inner container and the outer shell; The pressure relief kettle cover is located at the opening of the inner liner to close the inner liner.

2. The heatable vacuum insulated kettle according to claim 1, characterized in that: The metal material is ferromagnetic stainless steel or alloy, or non-magnetic stainless steel or alloy coated with ferromagnetic material.

3. The heatable vacuum insulated kettle according to claim 1, characterized in that: The non-metallic material is high borosilicate glass, ceramics, or modified plastics, which can be integrally made into the shell or partially applied to the bottom and above the bottom of the shell, and the covering height is ≥3 cm.

4. The heatable vacuum insulated kettle according to claim 1, characterized in that: The thickness of the vacuum layer is 2-15 mm, and the vacuum degree is ≤10-0.1 Pa.

5. The heatable vacuum insulated kettle according to claim 1, characterized in that: The pressure relief kettle cover is made into the form of threads, buckles, flip covers, etc. that match the opening of the inner pot, and is provided with a spring pressure relief device. When the air pressure in the kettle is greater than the atmospheric pressure, it is discharged outwards through the spring pressure relief device.

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