CN212281046U

CN212281046U - Cooking utensil with built-in detection device

Info

Publication number: CN212281046U
Application number: CN202020924810.7U
Authority: CN
Inventors: 谢勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2021-01-05
Anticipated expiration: 2030-05-19

Abstract

The invention discloses a cooking utensil with a built-in detection device, which is characterized by comprising: the container is fixedly connected with the base, the heating plate which is arranged in the base and forms a heat energy exchange cavity with the outer side of the bottom of the container is arranged between the base and the heating plate, one end of the temperature sensor is arranged in the bottom of the container, the other end of the temperature sensor is arranged outside the bottom of the container, the sealing ring sleeved on the temperature sensor is arranged on the main board, and the main board is arranged in the base and electrically connected with the temperature sensor. The invention has the advantages that the technical scheme has simple structure, small process dependence, low production cost, high thermal efficiency and low temperature rise of the appliance, the built-in detection device is not influenced by the high temperature of the heating plate, and the invention has the characteristics of two functions, wide applicability, stable and reliable detection data and the like, effectively solves the problems in the prior art or the related art, and expands the application of the non-metal container on the cooking appliance.

Description

Cooking utensil with built-in detection device

Technical Field

The invention relates to the technical field of kitchen appliances, in particular to a cooking appliance, wherein a container is integrally made of non-metallic materials, a heat radiation heating plate is adopted to provide heat energy, a temperature sensor is arranged between the heating plate and a base, and a probe of the temperature sensor is positioned in the container.

Background

Along with the enhancement of health requirements of consumers, an electric heating cooking appliance adopting a non-metal container becomes the next growth point of kitchen appliance sales, but is influenced by the heat conductivity coefficient of a non-metal material, on one hand, the problems of large heat loss, low heat efficiency, low appliance heating speed and high appliance temperature rise in the use process generally exist in the existing electric heating cooking appliances using the non-metal container on the market, on the other hand, the problems of serious lag of temperature detection response, inaccurate detection data, limited appliance function setting, unstable cooking performance and the like exist by adopting a known detection method and device, and once the appliance is cracked and damaged by a non-metal container during dry burning, serious personal and property injury accidents are caused.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art or the related art.

In order to achieve the above object, according to an aspect of the present invention, a cooking appliance having a built-in detection device includes:

the device comprises a container fixedly connected with a base, a heating plate, a temperature sensor, a sealing ring and a main board, wherein the heating plate is arranged in the base and forms a heat exchange cavity with the outer side of the bottom of the container;

base: a table top for placing and fixing a container is arranged above the base, a support for installing a heating disc is arranged in the base, and a through hole for the heating disc to pass through is formed in the middle of the table top;

a container: the container is a concave vessel which is integrally made of non-metallic materials, the bottom of the container is provided with a temperature sensor mounting hole and can be used for containing a heating object;

a heating plate: the heating plate is an electric energy and heat energy conversion device consisting of a concave metal shell, a concave heat insulation piece embedded in the shell, an electric heating wire arranged in a cavity of the heat insulation piece, a port arranged outside the shell and a bracket;

a temperature sensor: the temperature sensor is composed of a metal shell, a thermistor encapsulated in the metal shell, an insulating part and a lead connected with the thermistor, and the temperature sensor is divided into a probe, an installation step and an electric port.

Furthermore, the cooking utensil with the built-in detection device is characterized in that the cooking utensil is integrally made of glass and/or ceramic materials, the bottom of the cooking utensil is provided with a temperature sensor mounting hole with the diameter larger than 2mm, the bottom of the cooking utensil is provided with a concave container with the thickness larger than 1.5mm, the cooking utensil is fixed on the table board of the base by glue or screws or by back-off, the heating plate is tightly attached to the outer side of the bottom of the container through a support column in the base in a fixed connection or elastic connection mode to form a high-efficiency heat conduction cavity with heat radiation as main heat conduction and heat convection as auxiliary heat conduction, the temperature sensor mounting hole at the bottom of the container is positioned between the inner side wall of the base and the outer side wall of the heating plate, the temperature sensor, the sealing ring and the container are mounted at the bottom of the container through mounting steps of the temperature sensor in a, the probe of the temperature sensor is positioned at the inner side of the bottom of the container, the electric port is positioned at the outer side of the bottom of the container, the influence of high temperature of the heating plate on the temperature sensor is avoided, and then the electric port of the temperature sensor and/or a lead wire led out from a metal shell are electrically connected with a mainboard.

Further, the one-piece cooking apparatus is characterized by comprising: an electric kettle, a health preserving kettle, an electric Chinese medicine kettle, an electric rice cooker, an electric steamer, an electric chafing dish, an electric stewpot, an air fryer, a deep fryer and an electric heating multipurpose pot.

The invention adopts the following additional technical scheme:

the base is formed by a single part or a plurality of parts.

The thermistor is of the PTC type or NTC type.

The insulating part is a heat shrinkable tube and/or a silicone tube, or curable liquid or paste epoxy resin and/or silicone glue.

The invention has the advantages that the technical scheme has simple structure, small process dependence, low production cost, high thermal efficiency and low temperature rise of the appliance, the built-in detection device is not influenced by the high temperature of the heating plate, and the invention has the characteristics of two functions, wide applicability, stable and reliable detection data and the like, effectively solves the problems in the prior art or the related art, and expands the application of the non-metal container on the cooking appliance. Additional effects will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 is an isometric exploded view of an embodiment cooking appliance;

FIG. 2 is a cross-sectional view of an embodiment cooking appliance;

FIG. 3 is an isometric view of an embodiment temperature sensor;

FIG. 4 is a cross-sectional view of an embodiment temperature sensor;

fig. 5 is an enlarged sectional view at a of the embodiment cooking appliance.

Reference numerals: 3. a main board; 5. a base; 6. a container; 61. mounting holes; 7. a heating plate; 8. a temperature sensor; 81. a probe; 82. mounting a step; 83. an electrical port; 9. a seal ring; 100. a thermal energy exchange chamber; A. a locally magnified region.

The specific implementation mode is as follows:

embodiments of the invention will now be described in detail with reference to the drawings, wherein like reference numerals designate identical or similar elements or elements having identical or similar functions. The following examples are illustrative only for the purpose of illustrating the present invention and are not to be construed as simply limiting the invention.

The description of the invention refers to conceptual illustrations. Electrical connection: the method refers to the collection of all electrical circuits in an electrical product, including power connection parts such as power plugs, power terminals and the like, power lines, internal leads, internal connection parts and the like, and the electrical connection in a narrow sense only refers to all ways of connecting different conductors inside the product; fixedly connecting: the two connecting pieces are connected in an integral connection mode, namely, when one piece is displaced or stressed, the other piece connected with the two connecting pieces is not displaced or relatively deformed relative to the first piece; elastic connection: refers to the elastic connection mode between two or more connecting pieces, wherein one part has relative to the other parts. Terms and terminology such as "main board", "conductive lines", "side walls", "bottom", etc., are to be understood broadly in conjunction with the description herein, based on the well-known art, unless explicitly stated or limited otherwise. Therefore, the meanings of the above-mentioned nouns and terms in the present invention can be understood according to specific situations by those skilled in the art.

A cooking appliance provided with a built-in detection device of the present invention will be described with reference to fig. 1 to 5.

The technical scheme of the invention is that the cooking utensil provided with a built-in detection device is characterized by comprising:

as shown in fig. 1, fig. 2 and fig. 5, the container (6) is fixedly connected with the base (5), the heating plate (7) which is arranged in the base (5) and forms a heat energy exchange cavity (100) with the outer side of the bottom of the container (6) is arranged between the base (5) and the heating plate (7) at the bottom of the container (6), the temperature sensor (8) with one end arranged in the bottom of the container (6) and the other end arranged outside the bottom of the container (6), the O-shaped silicon rubber sealing ring (9) sleeved on the temperature sensor (8), and the mainboard (3) which is arranged in the base (5) and is electrically connected with the temperature sensor (8) and is provided with an IC and a program.

Base (5), base (5) are that single part constitutes, or a plurality of parts make up and form, base (5) top is equipped with the mesa that is used for placing, fixed container (6), base (5) inside is equipped with the pillar that the installation generates heat set (7), the mesa middle part is equipped with the through-hole that can supply to generate heat set (7) to pass, furtherly, the top surface of mesa is equipped with the recess or the stile of filling glue, the upper portion of stile is equipped with screw mounting hole or inboard and is equipped with the back-off.

The container (6), the container (6) is made of glass and/or ceramic nonmetal materials as a whole, the bottom is provided with a temperature sensor (8) mounting hole (61) with the diameter larger than 2mm, the wall thickness is larger than 1.5mm, the container can be used for accommodating a heated object, furthermore, the bottom side wall of the container (6) is provided with a pit or a groove matched with the back-off, and the periphery of the inner side of the mounting hole (61) is provided with a step higher than the inner bottom surface of the container (6).

The heating plate (7) is composed of a concave metal shell, a concave heat insulation piece embedded in the shell, an electric heating wire arranged in a cavity of the heat insulation piece, a port and a support arranged outside the shell, and an electric energy and heat energy conversion device taking heat radiation as main heat conduction and heat convection as assistance, particularly the heating plate (7) is the heating plate (7) used by the disclosed electric ceramic stove, so that detailed explanation is omitted.

As shown in fig. 3 and 4, the temperature sensor (8) is composed of a metal shell, a PTC type or NTC type thermistor encapsulated in the metal shell, an insulating member, and a conducting wire connected with the thermistor and/or the metal shell, the temperature sensor (8) is divided into three parts, namely a probe (81), a mounting step (82), and an electrical port (83), further, the insulating member is a heat shrink tube and/or a silicone tube sleeved on the thermistor, or a self-curable liquid or paste epoxy resin and/or silicone glue for filling a gap inside the metal shell to improve electrical performance.

Furthermore, the cooking utensil with the built-in detection device is characterized in that the cooking utensil is integrally made of glass and/or ceramic materials, the bottom of the cooking utensil is provided with a temperature sensor (8) mounting hole (61) with the diameter larger than 2mm, the concave container (6) with the thickness larger than 1.5mm is fixed on the table top of the base (5) by glue filled and coated on the upper surface of the table top or screws filled and coated on the vertical edge of the table top or inversed buckles on the vertical edge of the table top, the heating disc (7) is tightly attached to the outer side of the bottom of the container (6) by fixed connection or elastic connection through a support and a support column in the base (5) to form a heat exchange cavity (100) which takes heat radiation as the main part and heat conduction and heat convection as the auxiliary part, and heat energy directly passes through the bottom of the container (6), so the electric heating structure is simple in structure and low in cost, and avoids the heat energy generated by an intermediate device from obstructing the heat transfer (such as a, the heat efficiency of the appliance is greatly improved, and the temperature rise of the appliance is reduced; in the electric heating appliance with the electric heating structure, only when the temperature sensor (8) mounting hole (61) at the bottom of the container (6) is positioned between the inner side wall of the base (5) and the outer side wall of the heating disc (7), the thermistor type temperature sensor (8) with low cost and low temperature resistance is used to obtain stable and reliable detection data, the temperature sensor (8), the sealing ring (9) and the container (6) are mounted at the bottom of the container (6) in a bolt connection or riveting mode through the mounting step (82) and the mounting hole (61) of the temperature sensor (8), any part of the temperature sensor (8) is ensured to always keep a clearance larger than 1mm with the outer side wall of the heating disc (7), the probe (81) of the temperature sensor (8) is positioned at the inner side of the bottom of the container (6), and the electric port (83) is positioned at the outer side of the bottom of the container (6), therefore, the technical scheme avoids the adverse effect of the high temperature of the heating plate (7) on the temperature sensor (8), then the electric port (83) of the temperature sensor (8) and/or the lead connected and led out on the metal shell are electrically connected with the main board (3), the probe (81) positioned at the bottom side in the container (6) forms a temperature detection device which can directly detect the temperature of an object in the container (6) and has quick detection response, stable data and reliability on one hand, on the other hand, because the container (6) is made of non-metal materials of poor conductors, the metal shell of the temperature sensor (8) can be directly used as a detection electrode of a liquid capacitor in the container (6), when the temperature sensor (8) passes through the mounting hole (61) from inside to outside and is fixed at the bottom of the container (6), in order to ensure that the bottom of the container (6) has good sealing performance, the sealing ring (9) only needs to be sleeved on the bottom surface of the mounting step (82) (not needs to be sleeved in the mounting hole (61)), so that the temperature sensor (8) is simple and reliable to mount, an insulating space capable of storing a certain liquid height is formed between the mounting step (82) and the step on the inner bottom surface of the container (6) and/or the bottom surface of the container (6), a capacitance detection device (namely a known touch technology) of the appliance is formed, when no liquid is added into the container (6) or liquid exists in the container (6) but the liquid level is lower than the mounting step (82), the main board (3) obtains one capacitance value through a metal shell, when the liquid level added with the liquid is contacted with the mounting step (82), the main board (3) obtains another capacitance value through the metal shell, and the main board (3) judges and processes the detected capacitance value according to a set program and/or a capacitance ratio, the height of the liquid level in the container (6) can be judged, a corresponding cooking instruction is sent out, if the liquid level is lower than the installation step (82), the container is regarded as being in a dry-burning state, and the main board (3) can cut off the working power supply in time to avoid the occurrence of dry-burning.

Further, when no step is arranged on the periphery of the inner side of the mounting hole (61), the temperature sensor (8) penetrates through the mounting hole (61) from inside to outside and is mounted at the bottom of the container (6), the mounting step (82) and the sealing ring (9) below the mounting step (82) are both located inside the container (6), and the liquid level height of the container (6) for avoiding dry burning is determined by the thickness of the sealing ring (9); when the periphery of the inner side of the mounting hole (61) is provided with steps, the temperature sensor (8) penetrates through the mounting hole (61) from outside to inside and is mounted at the bottom of the container (6), the mounting steps (82) and the sealing ring (9) above the mounting steps (82) are both positioned in the container (6), and the liquid level height of the container (6) for avoiding dry burning is determined by the height of the steps on the periphery of the inner side of the mounting hole (61); preferably, the periphery of the inner side of the mounting hole (61) is provided with a step, and the temperature sensor (8) is mounted by penetrating through the mounting hole (61) from inside to outside.

As can be seen from the above explanation, the technical scheme of the invention is different from the known technical scheme of adopting the metal container (6), not only the electric heat source and the electric heating structure are different, but also the installation position and the installation mode of the temperature sensor (8) are different, in other words, the technical scheme of the invention can fully exert the technical characteristics and advantages only when being combined and applied, so the technical scheme of the invention is not separated into an isolated technical scheme for evaluation.

Further, the cooking utensil with built-in detection device, characterized by including: an electric kettle, a health preserving kettle, an electric Chinese medicine kettle, an electric rice cooker, an electric steamer, an electric chafing dish, an electric stewpot, an air fryer, a deep fryer and an electric heating multipurpose pot.

Claims

1. A cooking appliance provided with a built-in detection device, comprising:

2. The cooking utensil with built-in detection device as claimed in claim 1, wherein the container is made of glass and/or ceramic material, the bottom of the container is provided with a temperature sensor mounting hole with a diameter larger than 2mm, the container is fixed on the table top of the base by glue or screw or reverse buckling, the heating plate is tightly attached to the outer side of the bottom of the container by a support column in the base through fixed connection or elastic connection to form a heat energy conduction cavity, the temperature sensor mounting hole at the bottom of the container is located between the inner side wall of the base and the outer side wall of the heating plate, the temperature sensor, the sealing ring and the container are mounted at the bottom of the container through a mounting step of the temperature sensor by means of bolt connection or riveting connection, so that a probe of the temperature sensor is located at the inner side of the bottom of the container, the electrical port is located at the outer side of the bottom of the container, and, the temperature sensor metal shell can be used as a capacitance electrode to detect the height of the liquid level in the container.

3. A cooking appliance provided with a built-in detection device according to claim 1, comprising: an electric kettle, a health preserving kettle, an electric Chinese medicine kettle, an electric rice cooker, an electric steamer, an electric chafing dish, an electric stewpot, an air fryer, a deep fryer and an electric heating multipurpose pot.

4. The cooking appliance with built-in detection device as claimed in claim 1, wherein the base is formed by a single part or a combination of a plurality of parts.

5. Cooking appliance provided with a built-in detection device according to claim 1, characterized in that said thermistor is of the PTC type or NTC type.

6. The cooking appliance with built-in detection device as claimed in claim 1, wherein the insulation member is a heat shrink tube and/or a silicone tube, or a curable liquid or paste epoxy resin and/or silicone glue.