CN211260888U - Visual gas cooking utensils of firepower - Google Patents

Abstract

The utility model discloses a gas cooker with visualized firepower, which comprises a cooker body, a thermocouple and a control module; wherein, a display panel for displaying firepower, a burner for injecting gas and a pot support for supporting a pot are arranged on the stove body; the gas sprayed by the furnace end is mixed with air and then ignited by an igniter to form flame; the pot support is provided with a mounting groove, the hot end of a thermocouple is mounted in the mounting groove, the cold end of the thermocouple is mounted in a stove body, and the thermocouple is used for detecting the spatial temperature distribution of the position where the thermocouple is located and generating thermoelectromotive force which changes correspondingly according to the change of the temperature and sending the thermoelectromotive force to the control module; the control module is arranged in the stove body and used for adjusting the firepower displayed by the display panel according to the received thermoelectromotive force. The utility model discloses an increase detection and prompt facility of firepower size on gas cooking utensils, make the culinary art person can grasp the quantization parameter of firepower size directly perceivedly, improved the convenience that gas cooking utensils used.

Description

Visual gas cooking utensils of firepower

Technical Field

The utility model belongs to the technical field of gas equipment, specifically speaking relates to a gas cooking utensils, for example gas-cooker, integrated kitchen etc..

Background

Chinese food is one of the most famous cooking schools in the world, has various cuisine and dozens of cooking methods, is good in color, aroma and taste, and has very strict requirements on factors such as cooking temperature, time, steps and the like. With the development and application of sensing technology, deep learning technology and new material technology, as a household appliance which is used most frequently by people, kitchen electrical equipment such as a gas stove and an integrated stove is gradually improved towards multifunction and intellectualization, so that the requirements on unskilled cookers are reduced, and the convenience, safety, efficiency and happiness of people during cooking are improved.

An existing gas cooker generally includes a cooker body, a burner, a panel, a cooker support, an adjusting knob, an igniter, a flameout protector, a valve device, an air inlet pipe, a nozzle, an air door, and the like. The valve device is arranged on the stove body, and changes the flow of gas delivered to the stove head under the adjustment of the adjusting knob, so as to adjust the fire power of the stove head, thereby adapting to different cooking scenes such as frying, steaming, stewing and the like. When the gas cooker works, the actual fire power of the gas cooker is influenced by various factors such as the purity of gas, the mixing degree of the gas and air, the area of an ignition surface, the distance between flame and the bottom of a cooker, the wind speed and the like. In the aspect of sensing the fire power, the existing gas stove mostly depends on that a user observes the size and the color of flame through naked eyes, and then the flame is obtained through empirical conjecture, and the existing gas stove lacks of obvious and easily-recognized accurate quantification and prompt functions such as sound, images and the like. For users with insufficient cooking experience, problems of food scorching, soup overflowing or half-cooked food and the like caused by improper fire adjustment often occur in the cooking process, and then the cooking effect is influenced.

Disclosure of Invention

The utility model discloses a solve among the prior art gas cooking utensils the firepower size by the observation of user's naked eye, rely on the not good problem of culinary art effect that the experience conjecture led to, provided a visual gas cooking utensils of firepower, through increase the detection and prompt facility of firepower size on gas cooking utensils, make the culinary art person can grasp the quantitative parameter of firepower size directly perceivedly, improved the convenience that gas cooking utensils used.

In order to solve the technical problem, the utility model discloses a following technical scheme realizes:

a gas cooker with visualized firepower comprises a cooker body, a thermocouple and a control module; wherein, a display panel for displaying firepower, a burner for injecting gas and a pot support for supporting a pot are arranged on the stove body; the gas sprayed by the furnace end is mixed with air and then ignited by an igniter to form flame; the pot support is provided with a mounting groove, the hot end of the thermocouple is mounted in the mounting groove, the cold end of the thermocouple is mounted in the stove body, and the thermocouple is used for detecting the spatial temperature distribution of the position where the thermocouple is located and generating thermoelectromotive force which changes correspondingly according to the change of the temperature and sending the thermoelectromotive force to the control module; the control module is installed in the stove body and adjusts the firepower displayed by the display panel according to the received thermoelectromotive force.

In order to improve the accuracy of fire detection, the hot end of the thermocouple is preferably designed into a circular ring shape, and the circular ring is arranged above the burner and close to the top surface of the pot support, so that the spatial temperature distribution of the position detected by the thermocouple can approach the temperature distribution of the space close to the bottom of the pot, thereby the fire displayed by the display panel can be more practical and more accurate guidance can be exerted.

As an optimized structural design of the pot support, the pot support is provided with a bottom ring and supporting legs; the bottom ring can be arranged on the stove body and surrounds the periphery of the stove head; the landing leg is preferred to be a plurality of, installs on the base band and upwards extend, the top surface of landing leg should be higher than the top surface of furnace end, preferably all set up on each landing leg the mounting groove utilizes a plurality of landing legs to provide the holding power to the thermocouple simultaneously to improve the firm degree of thermocouple installation. The utility model discloses it is preferred will the mounting groove is seted up the landing leg is towards one side of furnace end and the position department of neighbouring landing leg top surface to further improve the degree of accuracy that the firepower detected.

Preferably, the mounting grooves formed in the support legs are preferably at the same level, so that the temperature detected by each part of the circular hot end of the thermocouple is the same level, the thermocouple generates thermal electromotive force according to the average value of the detected temperatures of different parts, and the thermal electromotive force is sent to the control module to generate a fire detection value, and therefore the accuracy of fire detection can be further improved.

In order to reduce the influence of the temperature of the furnace fire on the temperature of the cold end of the thermocouple and simultaneously ensure the safety and the reliability of the work of the gas cooker, the utility model preferably installs the cold end of the thermocouple and the control module in the cooker body at the position far away from the furnace end; or, a heat insulation chamber surrounded by a heat insulation material is additionally arranged in the stove body, and the cold end of the thermocouple and the control module are arranged in the heat insulation chamber, so that the accuracy of temperature detection is further improved; the connection extension part connected between the cold end and the hot end of the thermocouple is preferably embedded in the pot support, and the outer surface of the pot support is coated with a heat insulation coating.

Preferably, the thermocouple is an N-type thermocouple, a K-type thermocouple or a J-type thermocouple.

As an optimal circuit design of the control module, the utility model discloses preferably set up amplifier circuit and controller in the control module, amplifier circuit is used for receiving the thermoelectromotive force of thermocouple output to carry out signal amplification to the thermoelectromotive force and send to the controller; the controller judges the firepower according to the thermal electromotive force output after being amplified by the amplifying circuit and controls the display panel to display, so that the judging accuracy of the controller can be improved.

Preferably, the amplifying circuit amplifies the thermal electromotive force output by the thermocouple and transmits the amplified thermal electromotive force to the power supply end of the display panel, so as to form a thermal current to supply power to the display panel. The display panel is controlled to be on or off by utilizing the thermoelectromotive force generated by the thermocouple, so that flame is ignited, and the display panel is lightened; the control effect that the display panel extinguishes is achieved when the residual heat of the gas cooker is dissipated. The design can effectively prevent the scalding problem caused by the fact that a user contacts the cooker before the furnace temperature is scattered to the greatest extent, and the safety of the user in using the cooker is guaranteed.

In order to improve the aesthetic property of the gas cooker, the display panel preferably adopts an electric control dimming glass panel; the display area of the electric control dimming glass panel is designed to display when thermal current exists, the display is stopped when no thermal current exists, and the display area and/or the display brightness of the display area are/is correspondingly changed along with the change of the thermal current, so that the furnace temperature indicating effect can be improved, and the warning effect is enhanced.

In order to facilitate a cook to observe the firepower displayed by the gas cooker at any time, the electric control dimming glass panel is preferably arranged on the top surface of the cooker body.

Compared with the prior art, the utility model discloses an advantage is with positive effect: the utility model discloses a install the thermocouple on the pot support of gas cooking utensils, install display panel on the kitchen body, utilize the thermocouple to detect the temperature distribution condition in the space above the furnace end, and then determine the firepower size automatically, and carry out the visual display through display panel, help the user to judge directly whether current firepower size matches with current culinary art action, need not to bow to look over flame form and gas actual combustion condition from this culinary art person, can learn the current firepower size of gas cooking utensils accurately; after cooking is finished and gas is turned off, residual heat still exists on the surface of the stove body, and the display panel delays the turn-off prompt information to ensure the scald-proof safety of a user. Compared with the traditional fire perception method only by user experience inference, the design enables the user to conveniently know more accurate fire, in the cooking process, the fire is timely adjusted according to the display result of the display panel, so that the fire control is more accurate, cooked food is more delicious, the high-temperature early warning function of the rear panel after cooking is finished is considered, the user safety is guaranteed, and the use experience of the user is greatly improved.

Other features and advantages of the present invention will become more apparent from the following detailed description of embodiments of the invention, which is to be read in connection with the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of an embodiment of a gas cooker proposed by the present invention;

FIG. 2 is a schematic structural view of an embodiment of the pot support of FIG. 1;

FIG. 3 is a schematic structural view of one embodiment of a thermocouple;

FIG. 4 is a graph of the thermal electromotive force of several conventional thermocouples as a function of the temperature difference between the cold and hot ends;

fig. 5 is a schematic block diagram of a circuit of an embodiment of the gas cooker of the present invention.

Detailed Description

The following describes in detail embodiments of the present invention with reference to the accompanying drawings.

It should be noted that in the description of the present invention, terms indicating directions or positional relationships such as "upper", "lower", "top", "inner", etc., are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

As shown in fig. 1, the gas cooker of the present embodiment mainly includes a cooker body 1, and functional components such as a burner 2, a pot holder 3, an adjusting knob 4, an igniter 6, and a valve device, which are mounted on the cooker body 1. Wherein, the burner 2 is connected with a gas pipeline through a valve device (not shown in the figure), the igniter 6 can be arranged close to the burner 2, and the pot support 3 is arranged around the burner 2 for supporting a pot. When using gas cooking utensils, can rotate adjust knob 4 control valve device and open, make gas flow to furnace end 2, control some firearm 6 simultaneously and strike sparks, ignite the gas that erupts through furnace end 2, make the mixture burning of gas and air, form flame for food in the heating pan cooks food. In the working process of the gas cooker, the adjusting knob 4 can be rotated according to the cooking requirement to adjust the opening degree of the valve device, so that the gas flow transmitted to the burner 2 is changed, and then the adjustment of the fire power is realized.

After the pot is placed on the pot support 3, if the user wants to know the firepower, the existing gas cooker needs to bend down to check the burning condition (burning form, color, distribution range, etc.) of flame, and the user can obtain the firepower by means of experience presumption, which not only brings certain inconvenience to the user, but also brings great deviation between the estimated firepower and the actual condition for the user with insufficient cooking experience, and inevitably influences the cooking effect of food to a certain extent.

In order to solve the above problems, the present embodiment improves the existing gas cooker, and implements the automatic detection and display function of the fire intensity on the gas cooker, so as to improve the convenience of the user in cooking, improve the cooking effect of food, and improve the cooking safety.

As a preferred embodiment, in the present embodiment, a display panel 5 is added to the oven body 1, as shown in fig. 1. In order to facilitate the user to observe the change of the fire power at any time during the cooking process, the display panel 5 is preferably disposed on the top surface of the oven body 1, and the specific disposition position may be located below each of the oven heads 2 (the top-bottom orientation shown in fig. 1). For the gas cooker with double burners, the display panel 5 can be arranged between the two burners 2, and the fire of the two burners can be displayed simultaneously by using one display panel 5.

Of course, the display panel 5 may also be disposed at other positions of the oven body 1, so as to facilitate the user to look down at the position.

In this embodiment, the display panel may be the entire upper panel constituting the gas range, not just one constituent unit of the panel. For example, the whole upper panel of the gas cooker may be designed by using the electrically controlled dimming glass panel to replace the tempered glass panel of the current gas cooker, because the electrically controlled dimming glass panel may be freely designed and customized, such as a display area, a graphic style, text content, and the like, and therefore, when the electrically controlled dimming glass panel is used, the position indicated by reference numeral 5 in fig. 1 may specifically refer to the display area of the electrically controlled dimming glass panel.

Secondly, a thermocouple 6 is installed on the pot support 3, and as shown in fig. 3 and 5, the thermocouple is used for detecting the spatial temperature distribution of the position where the thermocouple is located, generating thermoelectromotive force which changes correspondingly according to the change of the temperature, and transmitting the thermoelectromotive force to the control module, so that after the size of the fire is automatically identified, the display panel 5 is driven to visually display in the forms of characters, graphs, animations and the like, and the prompt function is realized.

As a preferable installation manner of the thermocouple 6 on the pan support 3, in the embodiment, the pan support 3 is provided with the installation groove 34, as shown in fig. 2, the hot end 61 of the thermocouple 6 is embedded into the installation groove 34, and the circular hot end 61 increases the spatial range of temperature detection to ensure the accuracy of temperature detection. The cold end 62 of the thermocouple 6 is arranged in the stove body 1 and is far away from the stove head 2, the connecting extension 63 connected between the hot end 61 and the cold end 62 of the thermocouple 6 is preferably embedded in the pot support 3, and the outer surface of the pot support 3 is coated with a heat insulation coating so as to limit the temperature born by the connecting extension 63 in the cooking process from being too high. A lead 64 connected to the cold end 62 of thermocouple 6 is connected to the control module to transmit the thermal emf to the control module.

Considering that the thermoelectromotive force generated by the thermocouple depends on the temperature difference between the cold end and the hot end of the thermocouple, the thermoelectromotive force generated by the thermocouple is different under the temperature difference of different temperature intervals. In order to prevent the temperature of the cold end of the thermocouple from being affected by the temperature of the fire, and thus improve the accuracy of fire detection, the present embodiment preferably adds a heat insulation chamber (not shown in the figure) in the oven body 1. The insulated chamber may be formed of an insulating material around which the cold end 62 of the thermocouple 6 is placed so that the temperature of the cold end 62 of the thermocouple 6 remains constant throughout the cooking process, whereby the thermal electromotive force output by the thermocouple 6 more accurately reflects the flame temperature.

In this embodiment, the installation position of the control module in the oven body 1 should be far away from the oven head 2, or be arranged in the heat insulation chamber, so as to meet the temperature requirement of various electronic components in the control module on the working environment.

As a preferred embodiment, the pot support 3 of the present embodiment includes a bottom ring 31 and legs 32, as shown in fig. 2. Wherein, the bottom ring 31 is designed into a ring shape, the inner diameter is larger than the outer diameter of the furnace end 2, and the bottom ring surrounds the periphery of the furnace end 2 and is concentric with the furnace end 2 when being installed. The legs 32 are preferably attached to the bottom ring 31 at equal intervals and circumferentially distributed, and each extend upward (in the vertical direction as shown in fig. 2). An installation groove 34 is formed on the inner side surface of each supporting leg 32, and the installation groove 34 should be close to the top surface 33 of the supporting leg 32 as much as possible, so that the temperature distribution of the space detected by the thermocouple 6 is closer to the temperature distribution of the space near the bottom of the pot, and the generated fire detection result is more practical.

In order to further improve the accuracy of fire detection, the hot end 61 of the thermocouple 6 is preferably designed to be circular as shown in fig. 3, so as to increase the detection space range of the hot end 61. Meanwhile, when the mounting grooves 34 are formed in the pot support 3, it is preferable that the mounting grooves 34 are formed at the same level. The temperature at the same level is sampled at multiple points by the annular hot end 61 of the thermocouple 6, and the corresponding thermal electromotive force is generated by an integration algorithm, thereby improving the detection accuracy of the fire power.

The types of thermocouples on the market are various at present, and considering that the flame temperature of the gas cooker during working is usually within the range of 600-800 ℃ (the highest flame temperature of the existing gas cooker is about 1000 ℃), and the temperature of the cooker during normal cooking is usually not more than 300 ℃, therefore, the type N, K, J thermocouple is suitably selected for the thermocouple 6 of the embodiment.

Fig. 4 shows the corresponding relationship between the temperature difference of the cold and hot ends of several conventional thermocouples and the thermal electromotive force output by the thermocouples. As can be seen from fig. 4, for the N, K, J-type thermocouple, the thermoelectromotive force output by the thermocouple 6 is in the order of several millivolts to several tens millivolts under the condition of the flame temperature generated by the gas cooker. In order to improve the detection resolution of the fire power, the embodiment preferably designs the control module to first amplify the received millivolt-level thermal electromotive force to an equal proportion, for example, to 0 to 3V, and if the amplification proportion is too large, the energy consumption of the control module is increased, and then determines the fire power according to the amplified thermal electromotive force, so as to improve the detection accuracy.

As a preferred circuit design of the control module, as shown in fig. 5, in this embodiment, it is preferred that an amplifying circuit and a controller are disposed in the control module, the amplifying circuit is used to receive the thermal electromotive force output by the thermocouple 6, and after signal amplification processing, the signal is converted into a dc voltage with an amplitude of 0-3V, and the dc voltage is transmitted to the controller. The controller can be preset with a corresponding relation table or a calculation formula of the thermal electromotive force and the firepower, and after the firepower is determined by adopting a table look-up method or a formula calculation method, the display panel 5 is driven to display visually.

Specifically, when the table look-up method is used to determine the fire power, a corresponding relation table between the thermal electromotive force and the fire power can be established through experiments before the gas cooker leaves the factory, and the table is stored in the controller or a memory connected with the controller, so that the gas cooker can be provided for the controller to be used in the future actual use process.

When the fire power is determined by adopting a formula calculation method, an empirical calculation formula between the thermal power W (unit: kilowatt, kW) and the thermocouple detection temperature T (unit: centigrade, DEG C) can be obtained by adopting a method of combining heat transfer theoretical calculation and hot water enthalpy change experimental test correction:

W=A×T+B

wherein, a is the area of the circle enclosed by the circular hot end 61 of the thermocouple 6, the combustion efficiency of the gas stove, the coefficient of the gas radiation angle and the coefficient related to the gas flow rate, unit: kilowatt per degree centigrade, kW/deg.C; b is a correction factor, in units: kilowatts, kW; the thermal power W indicates the magnitude of the fire.

The calculation formula is written into the controller or a memory connected with the controller in advance, so that the gas cooker can be called and calculated by the controller in the future actual use process.

In the present embodiment, it is preferable to design the display panel 5 to display the fire power level as the visualized presentation information to improve the visualization effect.

As a preferred embodiment, the display panel 5 can be controlled to be on and off by using the 0-3V direct current voltage which is output by the amplifying circuit and reflects the change of the thermal electromotive force, so that the flame is ignited, and the display panel is lightened; the control effect that the display panel extinguishes is achieved when the residual heat of the gas cooker is dissipated.

Specifically, the display panel 5 is an electrically controlled dimming glass panel, a power supply end of the electrically controlled dimming glass panel is connected to an amplifying circuit, and the display area 5 of the electrically controlled dimming glass panel is electrically controlled to be turned on or off by using the amplified thermal electromotive force output by the amplifying circuit. That is, while the thermocouple 6 generates the thermoelectromotive force, the thermoelectromotive force is amplified by the amplifier circuit and then output to the electrically controlled light control glass panel to form a thermoelectromotive current. The display area 5 of the electrically controlled dimming glass panel displays when a thermal current is available and stops displaying when no thermal current is available, and the displayed content (such as a graph, a display area, display brightness and the like) changes along with the change of the thermal current. After the gas cooker is turned off, the display area 5 still displays the content for a period of time until the thermal current becomes zero and goes out because the residual temperature still exists. The design is provided for the purpose of scald prevention, and the residual temperature of the display panel is still prompted within a period of time after the gas cooker is flamed out, so that the safety of a user is guaranteed.

The firepower size that gas cooking utensils is detected through thermocouple 6 to this embodiment to carry out dynamic imaging through display panel 5, realized the visual identification of gas cooking utensils firepower size, the user need not to bow at the culinary art in-process and looks over the burning condition, can learn the present firepower size of gas cooking utensils accurately, conveniently directly judge whether current firepower matches with current culinary art action, has promoted the convenience that the user used.

In addition, the gas cooker of this embodiment simple structure, simple to operate, the appearance is pleasing to the eye, and is little to current gas cooker structure change, and the suitability is strong.

Of course, the above embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (10)

1. A gas cooker with visualized firepower is characterized by comprising:

a range body on which a display panel for displaying the magnitude of fire is mounted;

the burner is arranged on the stove body and used for spraying fuel gas, and the fuel gas is mixed with air and then ignited through an igniter to form flame;

a pot support installed on the cooker body for supporting a pot; the pot support is provided with a mounting groove;

the hot end of the thermocouple is arranged in the mounting groove, and the cold end of the thermocouple is arranged in the stove body; the thermocouple is used for detecting the spatial temperature distribution of the position where the thermocouple is located and generating thermoelectromotive force which changes correspondingly according to the change of the temperature;

and the control module is arranged in the stove body, receives the thermoelectromotive force output by the thermocouple, and adjusts the firepower displayed by the display panel according to the thermoelectromotive force.

2. The fire visualization gas cooker as recited in claim 1, wherein the hot end of the thermocouple is annular and surrounds the burner and is located above the burner and adjacent to the top surface of the pot support.

3. The fire visualization gas cooker of claim 2, wherein the pot holder comprises:

a bottom ring mounted on the oven body and surrounding the periphery of the oven head;

the landing leg, it includes a plurality ofly installs on the end turns up and upwards extends, the top surface of landing leg is higher than the top surface of furnace end has all been seted up on each landing leg the mounting groove, the mounting groove is seted up the landing leg is towards one side of furnace end and the position department of neighbouring landing leg top surface.

4. The fire visualization gas cooker as recited in claim 3, wherein the mounting grooves provided on each of the legs are at the same level.

5. The fire visualization gas cooker of claim 1,

the cold end of the thermocouple and the control module are positioned in the stove body and far away from the stove head; or a heat insulation chamber formed by surrounding a heat insulation material is arranged in the stove body, and the cold end of the thermocouple and the control module are installed in the heat insulation chamber;

the hot end of the thermocouple is connected with the hot end of the pot support, and the outer surface of the pot support is coated with a heat insulation coating.

6. The fire visualization gas cooker as recited in claim 1, wherein the thermocouple is an N-type thermocouple, a K-type thermocouple, or a J-type thermocouple.

7. The fire visualization gas cooker of any one of claims 1 to 6, wherein the control module comprises:

an amplifying circuit which receives the thermoelectromotive force output by the thermocouple and amplifies the signal of the thermoelectromotive force;

and the controller is connected with the amplifying circuit, receives the amplified thermal electromotive force output by the amplifying circuit, and adjusts the fire power displayed by the display panel according to the amplified thermal electromotive force.

8. The fire visualization gas cooker as recited in claim 7, wherein the amplifying circuit amplifies the thermal electromotive force output by the thermocouple and transmits the amplified thermal electromotive force to the power supply terminal of the display panel, and outputs a thermal current to supply power to the display panel.

9. The fire visualization gas cooker as claimed in claim 8, wherein the display panel is an electrically controlled dimming glass panel, a display area of the panel is displayed when there is a thermal current, the display is stopped when there is no thermal current, and a display area and/or display brightness of the display area are/is changed according to the change of the thermal current.

10. The fire visualization gas cooker as recited in claim 9, wherein the electrically controlled dimming glass panel is disposed on a top surface of the cooker body.

Images