CN206630435U - Electric cooking appliances with combined heating - Google Patents

Abstract

The utility model relates to an electric cooking appliance, comprising a first heating component and a second heating component that work together or separately, wherein the first heating component and the second heating component are separately arranged and have different heating modes. The utility model provides an electric cooking appliance with built-in combined heating technology that can be used for high-performance and energy-efficient cooking. The cooking appliance of the utility model can also be placed in different structures and designs.

Description

Electric cooking appliances with combined heating

technical field

The utility model relates to a cooking utensil, in particular to an electric cooking utensil with a combined heating method that can be used for high-performance, high-efficiency and energy-saving cooking.

Background technique

Different heating technologies have been used in various electric cooking appliances. Currently, commonly used heaters are radiant heaters made of electric heating coils or infrared halogen lamps. In recent years, induction heating has become popular, which can achieve higher energy efficiency than radiation heating. Unlike radiant heating, for example using conventional electric heating coils, induction heating generally heats the cooking vessel directly via electromagnetic induction by generating an oscillating magnetic field which induces a current in the metal vessel and thus heats the food. In general, induction cookers work faster and are more energy efficient than radiant cookers or other conventional electric cookers. However, induction heating has limitations on the appliance to be used, requiring ferromagnetic metals for optimal heating efficiency due to the magnetic induction relationship. Thus, induction heating does not perform well with utensils made of non-magnetic or non-ferrous metals, such as aluminum pans or glassware.

An enhanced induction heating approach has recently been developed to allow induction heating to be applied to non-ferrous metals based on higher operating frequencies with reduced coupling efficiency and reduced power rating. But this way will weaken the power and inductive coupling performance. Also, induction heating doesn't work well on glass and ceramic containers that are commonly used to simmer or cook soup. In addition, both radiative and induction heating are known to have poor performance in low heat and low temperature regimes, and would affect their use in low temperature cooking.

Utility model content

An electric cooking appliance of the present utility model comprises a first heating component and a second heating component working together or independently, and the first heating component and the second heating component are separately arranged and have different heating modes.

In one embodiment, the first heating element is placed on the top of the cooking appliance, thus becoming a top heating element; the second heating element is placed on the bottom of the cooking appliance, thereby becoming a bottom heating element. The top heating element contains a multi-layer heating material system that has special properties and is made of special materials and structures that do not generate magnetic fields and/or magnetic interference and are not immune to interference from other sources The effect of magnetic interference.

In one embodiment, the top heating element comprises a substrate and multiple layers of conductive coating material each having a thickness of nanometers deposited on the underside of the substrate.

In one embodiment, each layer of the multilayer conductive coating material has a nanometer thickness of 20 nm to 100 nm.

In one embodiment, each layer of the multilayer conductive coating material has a nanometer thickness of 50nm to 70nm.

In one embodiment, the electric cooking appliance further includes an electrically insulating material layer disposed between the substrate of the top heating component and the conductive coating material.

In one embodiment, the electric cooking appliance further includes a heat insulating material layer disposed on the lower side of the top heating component.

In one embodiment, the second heating element comprises one or more induction coil heating units.

In one embodiment, the top heating element is a coating heating element and the bottom heating element is an induction heating element.

In one embodiment, the top heating element and the bottom heating element are separated by a distance of 2 mm to 100 mm.

In one embodiment, the top heating element and the bottom heating element are separated by a distance of 10 mm to 40 mm.

In one embodiment, the cooking appliance is further provided with an intelligent monitoring and control system integrated with the first and second components, the intelligent monitoring and control system monitoring and controlling the first and second heating components Both, or independently monitor and control the first or second heating element. This system also allows the workflow of the control system for automatic detection of the cooking utensils placed on the cooking appliance to determine the operation of the heating system.

In one embodiment, said top heating means comprises one or more heating elements, a plurality of heating elements being electrically connected to each other in parallel or in series.

In one embodiment, the top heating element comprises a thin heating element attached to the underside of the top cover of the cooking appliance, the thin heating element having a thickness of 0.2 mm to 4.0 mm.

In one embodiment, the thin heating element has a thickness of 0.5 mm to 1.0 mm.

In one embodiment, the thin heating element may also have an additional layer of electrically insulating material.

The utility model also provides a low-temperature cooking utensil, which comprises the above-mentioned electric cooking utensil, and a water bath detachably arranged on the electric cooking utensil.

In one embodiment, the electric cooking appliance is further provided with a temperature control system; the low-temperature cooking appliance is provided with a temperature sensor connected between the temperature control system and the water bath.

The utility model also provides a contact oven, which comprises the above-mentioned electric cooking appliance, and a cover plate detachably arranged on the electric cooking appliance.

In one embodiment, the contact area between the cover plate and the electric cooking appliance is provided with a contact power switch, when the cover plate is placed on the electric cooking appliance, The contact power switch is engaged.

The utility model provides a cooking appliance with a unique structural configuration, which has at least two heating components with different heating methods, the combined heating methods can be compatible with each other and enhance the efficiency and performance of the cooking appliance.

Description of drawings

The utility model will be further described below in conjunction with accompanying drawing and embodiment, in the accompanying drawing:

Fig. 1 shows the appearance of the electric cooking appliance of the embodiment of the utility model.

Fig. 2 shows the structure of the electric cooking appliance of the embodiment of the present invention.

Fig. 3 shows the coating area and electrode configuration of the electric heating component deposited on the lower part of the top cover of the electric cooking appliance according to the embodiment of the present invention.

Fig. 4 shows another configuration of the coating area and electrodes of the electric heating component deposited on the lower part of the top cover of the electric cooking appliance according to the embodiment of the present invention.

Fig. 5 shows the structure of an electric cooking appliance according to another embodiment of the present invention, wherein a thin heating element is attached to the underside of the top cover of the cooking appliance.

FIG. 6 shows the structure of the thin heating element shown in FIG. 5 .

FIG. 7 shows the configuration of the coating area and electrodes of the heating element of FIG. 6 .

Fig. 8 shows the configuration of the control panel of the electric cooking appliance according to the embodiment of the present invention.

Fig. 9 shows the workflow of the automatic kitchen utensil detection of the electric cooking utensils according to the embodiment of the present invention.

Fig. 10 shows the working process of the temperature and timer functions of the electric cooking appliance according to the embodiment of the present invention.

Figure 11 shows the conversion of an electric cooking appliance according to an embodiment of the present invention to a water bath low-temperature cooking appliance with additional accessories.

Fig. 12 shows the conversion of an electric cooking appliance to a water bath type low-temperature cooking appliance according to another embodiment of the present invention, wherein an external temperature sensor is connected between the cooking appliance and the water bath type low-temperature cooking appliance.

Figure 13 shows the conversion of an electric cooking appliance according to an embodiment of the invention to a contact oven or cooking device with the addition of a cover plate to place it on the top cover of the cooking appliance.

detailed description

In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation of the utility model is described in detail with reference to the accompanying drawings.

Embodiments of the electric cooking appliance of the present invention are described in detail below, and examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions.

In describing the present utility model, it should be understood that the terms "front", "rear", "upper", "lower", "upper end", "lower end", "upper part", "lower part" etc. indicate directions or The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation , so it cannot be interpreted as a limitation of the present utility model.

As used herein, the term "nano-thickness" refers to the thickness of each coating that can only be measured in the nanometer level.

Conventional cooking appliances generally contain only one heating method, since the use of different heating technologies in a single cooking unit may not be compatible with each other and also affect their efficiency and performance due to the formation of thermal or magnetic interference between each other. The utility model discloses a cooking utensil with a unique structural configuration, which has at least two heating components with different heating modes, the combined heating modes can be compatible with each other and enhance the efficiency and performance of the cooking utensil, and have the ability to avoid thermal or magnetic interference. characteristic.

In an embodiment of the present invention, the cooking appliance includes a first heating component and a second heating component that can work together or independently. In one arrangement, the first heating element may be placed on top of the cooking appliance, thereby becoming a top heating element; and the second heating element may be placed on the bottom of the cooking appliance, thereby becoming a bottom heating element.

The top heating element includes a base plate. Multiple layers of conductive material each having a thickness of nanometers may be deposited on the underside of the substrate. The layers of conductive material can be of different sizes and shapes covering all or a portion of the underside of the substrate. The substrate may be made of, for example, thin ceramic glass, borosilicate glass, aluminosilicate glass, quartz or other suitable heat resistant material. The substrate may have a thickness of 0.2 mm to 4.0 mm. The substrate can be black or other colors, or have a transparent appearance. When an electric current passes through the multiple layers of conductive material, the multiple layers of conductive material generate thermal energy to provide efficient heating to cook food on the surface of the substrate or in the cooking vessel.

The cooking appliance includes a second heating element at the bottom. The second heating element may be one or more induction coil heating units. Induction coil heating units can be of different sizes and shapes and can be placed across the bottom of the cooking appliance. When current is passed through the second heating element, the second heating element generates a magnetic field and this magnetic field induces an electric current in the cooking vessel to heat and cook food in the vessel.

It can be seen that in this embodiment, the top heating element adopts the coating heating method, while the bottom heating element adopts the induction heating method, and the two heating elements with different heating methods can work together at the same time or can work independently of each other. The top heating element contains a multi-layer heating material system that has special properties and is made of special materials and structures that do not generate magnetic fields and/or magnetic interference and are not immune to interference from other sources The effect of magnetic interference. Thus, the operation of the top heating element will not affect the operation and performance of the bottom heating element, and its operation and performance will not be affected by the operation of the bottom heating element.

In one embodiment, the top and bottom heating elements are separated by a distance of 2mm to 100mm, preferably about 10mm to 40mm, to optimize the efficiency and performance of the two heating techniques. The power and energy output of the heating element may be controlled by a temperature and/or energy output control system having a control circuit installed in the cooking appliance and a capability for detection of the kitchen utensils.

Intelligent temperature and power monitoring and control systems using ADC (Analog/Digital Converter) and PWM (Pulse Width Modulation) drivers can be integrated with multilayer heating Coated top and bottom heating elements are integrated. The temperature and power monitoring and control system can monitor and control both the top and bottom heating elements simultaneously, or monitor and control each heating element independently. The monitoring and control system can also automatically detect the type of cooking vessel used for cooking and determine the power delivered to the top heating element, the bottom heating element, or both. The monitoring and control system can also work manually when delivering power to the top heating element or the bottom heating element or both. The cooking utensil of the present utility model can perform cooking with various cooking utensils. The cooking appliance can also provide other kinds of cooking, for example slow cooking with low temperature cooking through additional cooking accessories, as will be detailed below.

In the cooking appliance of the embodiment of the present invention, heating components with different heating methods are used to form an efficient combined heating system. Therein, a multi-layer heating coating is used to generate thermal energy in the top heating element of the cooking appliance. The multilayer heating coating is deposited on a substrate made of ceramic glass or other suitable materials. The multilayer heating coating has a multilayer nanometer-thick conductive coating. The characteristics of the conductive coating are based on chemical doping elements and processing conditions. The The multi-layer heating coating can maintain the stable structure and performance from low temperature heating to high temperature heating, and can maintain the special ceramic frit parallel electrodes across the coating to ensure that the electrodes and Optimum match between coating and substrate. Each layer of the multilayer heating coating has a nanometer thickness of 20 nm to 100 nm, and preferably has a nanometer thickness of about 50 nm to about 70 nm.

The utility model relates to an electric cooking appliance which can maintain the high energy efficiency of induction cooking while overcoming the restriction on the selection of utensils. The appliance of the present invention also provides the high performance of low heat stews, contact grilling with additional accessories, and long slow cooking for low temperature cooking for tasty and healthy meals.

Referring to Fig. 1 and Fig. 2, a cooking appliance 1 according to an embodiment of the present invention includes a top heating element 10 and a bottom heating element 20, which are separated by a distance of 2mm to 100mm (preferably about 10mm to 40mm). The top heating component includes a substrate made of ceramic glass or other suitable heat-resistant material, and a multi-layer nanometer-thick heating coating deposited on the lower part of the substrate. As shown in FIG. 2 , a layer of thermally insulating material 30 may also be provided under the top heating element to minimize thermal coating leading to the bottom heating element 20 . The cooking appliance 1 may also include a control panel 40 and a temperature and power monitoring and control system (not shown).

The multilayer heating coating deposited on the underside of the substrate may be in the form of a heating film having electrodes and coating areas. Figures 3 and 4 show two different configurations of the heating coating and electrodes on the top heating element and the electrical communication between the heating elements in the cooking appliance.

The properties of multilayer nanometer-thick conductive coatings are based on chemical doping elements and processing conditions. Specialized ceramic frit electrodes are deposited across the coating on the substrate. Each layer of the multilayer heating coating has a nanometer thickness of 20nm to 100nm, preferably about 50nm to about 70nm. Each heating element may contain one or more heating elements. Each heating element comprises a coated area 101 of the heating film, and multiple heating elements may be of the same or different size. The heating elements may also have the same coating properties (eg, structure, composition, thickness, etc.) or different coating properties. A layer of insulating material may also be attached between the substrate and the conductive coating.

The heating elements can be electrically connected to each other in parallel or in series. With different connection configurations of the heating elements, different power outputs can be obtained. For example, the heating element of Figure 4 can produce twice the power output of the heating element of Figure 3 at the same voltage. In the heating element shown in FIG. 3, when the electrodes 112 and 113 (the edge electrodes of the coating area 101 are shown) are respectively connected to the two terminals of the power supply, the two heating elements are electrically connected in series and the cooking appliance can operate on standard AC work under power. When electrode 111 is connected to one terminal of the power supply and electrodes 112 and 113 are connected to the other terminal of the power supply, the two heating elements are electrically connected in parallel and the appliance can produce the same power output at a lower voltage. In the heating element shown in Figure 4, when the electrodes 121 and 123 (the edge electrodes of the coated area 101 are shown) are connected to the two terminals of the power supply, the three heating elements are electrically connected in series and the cooking appliance can operate on a standard AC power supply. down to work. When electrodes 121 and 122 are connected to one terminal of the power supply and electrodes 123 and 124 are connected to the other terminal of the power supply, the three heating elements are electrically connected in parallel and the appliance can produce the same power output at a lower voltage.

An intelligent power monitoring and control system using ADC (Analog to Digital Converter) and PWM (Pulse Width Modulation) drivers can be integrated with the heating element in order to provide smooth power to the heating element according to heating requirements and optimize heating performance and energy efficiency . Using this monitoring and control system, a heating servo system can be developed to match and optimize the fast and efficient heating performance of the heating element and achieve accurate temperature targets. When the device reaches the preset target temperature, the ADC and PWM control system will immediately respond and cut off the power supply to achieve energy saving purposes and limit the temperature of the heating components. When the device temperature falls below a preset temperature, the ADC and PWM will then respond and turn on power for heating. The heating servo system provides continuous monitoring and control with fast response while smoothing the power supply to the heating element and optimizing the heating effect, energy efficiency and heating performance of the heating element.

Figure 5 shows the structure of another embodiment of the electric cooking appliance of the present invention, wherein a thin heating element 10' is attached to the underside of a top cover (for example, may be made of glass) 50 of the cooking appliance. The thin heating element 10' has a thickness of 0.2mm to 4.0mm and preferably a thickness of 0.5mm to 1.0mm.

Figure 6 shows the structure of a thin heating element 10' attached to the underside of the top cover 50 of the cooking appliance of Figure 5 . The thin heating element 10' comprises a multi-layer nano-thickness coating 101', an electrode 110' and a substrate 120'. The substrate 120' is made of ceramic glass, porcelain glass, aluminosilicate glass, quartz or other suitable heat-resistant materials. A substrate 120' is deposited with multiple layers of conductive material 101' each having a thickness of nanometers to form a heating element. The multi-layer nano-thickness coating 101' may be in the form of a heated film.

FIG. 7 shows the configuration of the coating and electrodes on the thin heating element described in FIG. 6 . Each heating element comprises one or more coated regions 101' of the heating film and electrodes 110'.

FIG. 8 shows the configuration of the control panel 40 of the electric cooking appliance 1 of the present application. Figure 9 shows the workflow of the control system allowing automatic detection of cookware placed on the top glass of the cooking appliance. For metal cookware, the top and bottom heating elements can be switched on in combination. For glass and ceramic cookware, only the top heating element can be switched on. The control system also allows operation by manual selection of cooker modes between metal cookware and glass and ceramic cookware.

Fig. 10 shows the working process of the temperature and timer functions of the electric cooking appliance according to the embodiment of the present invention. Through the temperature setting, the operating temperature of the cooking appliance will increase from a low level to a high level, there may be several temperature settings in between. By pressing the timer setting, the cooking appliance will operate for a duration preset by the user.

Fig. 11 shows the conversion of the electric cooking appliance 1 of the embodiment of the present invention to a water bath type low-temperature cooking (Sous Vide) cooker with additional accessories. The low-temperature cooking utensil generally works at a temperature lower than 100° C., and cooks food in a sealed plastic bag inside the water bath 2 . The utility model's top heating element and temperature control system enable precise low heat and low temperature cooking. Fig. 12 shows another embodiment of the conversion of the cooking appliance 1 to a water bath low temperature cooking cooker. The external temperature sensor 3 is connected between the temperature control system of the cooking appliance 1 and the water bath 2 for low-temperature cooking. The probe of the temperature sensor 3 is put into the water bath 2 or connected to the water bath 2 through a connector at one end of an electrical connection cable whose other end is inserted into the temperature control system.

Fig. 13 shows another embodiment of the conversion of the electric cooking appliance 1 of the embodiment of the present invention to a contact oven or cooking device, wherein a cover plate 2' is added and placed on the top cover glass of the cooking appliance 1, The cover plate 2' can be a glass plate or a metal plate or a plate made of other suitable materials. Heat can be transferred through the top lid and cover plate 2' of the cooking appliance 1 to cook or warm food directly or in the container. The cover plate 2' can be taken out after cooking, which facilitates cleaning. A contact power switch and/or temperature control sensor may also be provided on the cover plate 2' and/or the cooking appliance 1 to allow power on/off and accurate temperature control when controlling the current and power to the top heating element of the cooking appliance 1 . The power on of the top heating element can work through different working modes. In one mode of operation, when the cover plate 2' is placed on the cooker, the contact power switch between the cover plate 2' and the cooker 1 engages, thereby allowing current to pass through the top heating element and heat energy is generated. When the cover plate 2' is removed, the current to the top heating element will be cut off and heating terminated. In another embodiment, in case the cover plate 2' is not placed, the alarm system goes off and does not allow energization of the top heating element. An alert is displayed on the cooking appliance 1 to remind the user to put the cover plate 2' on before the top heating element of the cooking appliance can be switched on.

The cooking appliance of the utility model relates to an electric cooking appliance with built-in combined heating technology which can be used for high-performance and high-efficiency energy-saving cooking. In the cooking appliance of the present invention, a plurality of heating components with different types of heating methods are included to form a combined heating system with high energy efficiency. The cooking utensil of the present invention can also be placed in different configurations and designs.

Embodiments of the present utility model have been described above in conjunction with the accompanying drawings, but the present utility model is not limited to the above-mentioned specific implementation, and the above-mentioned specific implementation is only illustrative, rather than restrictive. Under the enlightenment of the utility model, personnel can also make many forms without departing from the scope of protection of the purpose of the utility model and claims, and these all fall within the protection of the utility model.

Claims (14)

1. a kind of electric cooking apparatus, it is characterised in that add including cooperation or the first heater block to work independently and second Thermal part, first heater block and the second heater block are separately positioned and have different heating mode, first heating Part is placed at the top of the cooking apparatus, so as to turn into top heater block；Second heater block is placed in the cooking pot Has bottom, so as to turn into bottom-heated part；The top heater block and bottom-heated part are with 2mm to 100mm distance Separation arrangement；The top heater block is coating heater block, and the bottom-heated part is sensing heating part；The top Portion's heater block has the multilayer conductive coating material of nano thickness including substrate and each layer being deposited on the downside of the substrate Material, each layer of the multilayer conductive coating material have 20nm to 100nm nano thickness.

2. electric cooking apparatus as claimed in claim 1, it is characterised in that the top heater block and bottom-heated part with 10mm to 40mm distance separation arrangement.

3. electric cooking apparatus as claimed in claim 1, it is characterised in that each layer of the multilayer conductive coating material has 50nm to 70nm nano thickness.

4. electric cooking apparatus as claimed in claim 1, it is characterised in that also include the base for being arranged at the top heater block Electrical insulation material layer between plate and conductive coating materials.

5. electric cooking apparatus as claimed in claim 1, it is characterised in that also include being arranged on the downside of the top heater block Heat insulator layer.

6. electric cooking apparatus as claimed in claim 1, it is characterised in that second heater block includes one or more senses Answer coil heats unit.

7. electric cooking apparatus as claimed in claim 1, it is characterised in that the cooking apparatus is additionally provided with to be added with described first The intelligent surveillance and control system that thermal part and the second heater block are integrated, the intelligent surveillance and control system monitoring and control Both described first heater block and the second heater block are made, or independently monitors and control first heater block or Two heater blocks.

8. electric cooking apparatus as claimed in claim 1, it is characterised in that the top heater block includes one or more Heating element heater, multiple heating element heaters are electrically connected to each other in parallel or series.

9. electric cooking apparatus as claimed in claim 1, it is characterised in that the top heater block includes being attached at described cook The thin heating element heater prepared food on the downside of the top cover of utensil, the thin heating element heater have 0.2mm to 4.0mm thickness.

10. electric cooking apparatus as claimed in claim 9, it is characterised in that the thin heating element heater has 0.5mm to 1.0mm Thickness.

11. a kind of low temperature cooking cook ware, including the electric cooking apparatus as described in claim 1-10 is any, and detachable placement Water bath on the electric cooking apparatus.

12. low temperature cooking cook ware as claimed in claim 11, the electric cooking apparatus is additionally provided with temperature control system；It is described Low temperature cooking cook ware is provided with the temperature sensor being connected between the temperature control system and the water bath.

13. a kind of contact oven, including the electric cooking apparatus as described in claim 1-10 is any, and be detachably placed in Cover plate on the electric cooking apparatus.

14. oven as claimed in claim 13, it is characterised in that in one of the cover plate and the electric cooking apparatus The contact area of another one is provided with contact power switch, it is described when the cover plate is placed on the electric cooking apparatus Contact power switch engagement.