CN211290165U

CN211290165U - Kitchen range

Info

Publication number: CN211290165U
Application number: CN201922154574.5U
Authority: CN
Inventors: 王孟君; 郑烨南; 楼国进
Original assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Current assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2020-08-18
Anticipated expiration: 2029-12-04

Abstract

The utility model provides a cooking stove. The cooking utensils include: the infrared temperature measurement module is arranged above the panel of the stove and used for detecting the temperature of a pot on at least one furnace end of the stove; the electromagnetic valve is arranged on an air supply pipeline of the stove and used for controlling the flow of the fuel gas conveyed to the at least one burner; and the control device is respectively connected with the infrared temperature measurement module and the electromagnetic valve and is used for receiving the temperature signal of the infrared temperature measurement module and controlling the electromagnetic valve to cut off the fuel gas delivered to any burner or reduce the fuel gas flow delivered to the burner when the temperature of any burner reaches a dry combustion condition, wherein the dry combustion condition is that the temperature exceeds a temperature threshold value and/or the change rate of the temperature exceeds a change rate threshold value. The mode of monitoring the temperature of the furnace end through the infrared temperature measurement module on the stove can accurately and timely find the occurrence of the dry burning condition, thereby timely cutting off or reducing the fuel gas and effectively ensuring the safety of a kitchen.

Description

Kitchen range

Technical Field

The utility model relates to a kitchen utensil's technical field specifically relates to a cooking utensils.

Background

Gas cookers/liquified gas cookers are commonly used as cookers in modern homes for heating or cooking food. However, in some cases, the user may forget to turn off the cooker during cooking, and the food in the pot is heated for a long time, so that the liquid is dried up, and the phenomenon of dry burning occurs. If a plurality of cooking is continuously carried out, the food can be burnt to cause waste, and the temperature of the cooker can be overhigh in serious conditions to cause fire disasters. Therefore, in the field of cooking utensils, how to intelligently turn off a gas switch so as to prevent dry burning is an important research topic.

At present, an anti-dry-burning stove is provided, and the control scheme is as follows: acquiring image information of a cooker placed on the dry-burning-prevention cooker, determining the weight of the cooker according to the image information, calculating the initial weight of food and the variation of the weight of the food along with time by combining the weight of the cooker, calculating the net weight of the food in the cooker, and determining the time point of dry burning according to the variation of the net weight of the food.

This dry burning prevention technique has the following disadvantages: 1. the weight of the cooker cannot be accurately judged only according to the image information, and the initial weight of the food cannot be accurately obtained; 2. chinese style culinary art is eaten material various, and is mottled complicated, can't calculate the variable quantity of multiple edible material weight along with time through a general formula, so can't calculate the time point that dry combustion method takes place more accurately, and it is not good to prevent dry combustion method effect.

SUMMERY OF THE UTILITY MODEL

In order to at least partially solve the problems in the prior art, a hob is provided.

According to an aspect of the present invention, there is provided a cooking appliance, comprising: the infrared temperature measurement module is arranged above the panel of the stove and used for detecting the temperature of a pot on at least one furnace end of the stove; the electromagnetic valve is arranged on an air supply pipeline of the stove and used for controlling the flow of the fuel gas conveyed to the at least one burner; and the control device is respectively connected with the infrared temperature measurement module and the electromagnetic valve and is used for receiving the temperature signal of the infrared temperature measurement module and controlling the electromagnetic valve to cut off the fuel gas delivered to the furnace end or reduce the fuel gas flow delivered to the furnace end when the temperature of the cooker on any furnace end reaches a dry combustion condition, wherein the dry combustion condition is that the temperature exceeds a temperature threshold value and/or the change rate of the temperature exceeds a change rate threshold value.

Be provided with infrared temperature measurement module on this cooking utensils, can detect the temperature of the pan on the furnace end through it, can judge whether the dry combustion method condition appears according to the temperature that detects afterwards, the cooking utensils can stop heating or reducing the gas flow of this furnace end to the pan of this furnace end top when the dry combustion method condition appears at the furnace end. The mode of monitoring the temperature of the furnace end through the infrared temperature measurement module on the stove can accurately and timely find the occurrence of the dry burning condition, thereby timely cutting off or reducing the fuel gas and effectively ensuring the safety of a kitchen.

Exemplarily, the infrared temperature measurement module includes at least one pyroelectric module, and each pyroelectric module includes a fresnel lens and a pyroelectric infrared sensor, and the fresnel lens and the pyroelectric infrared sensor are disposed above the panel and a central axis of the fresnel lens is parallel to the panel.

The pyroelectric infrared sensor does not emit any type of radiation, and the device has low power consumption, good concealment and low price. In addition, the detection distance of the pyroelectric infrared sensor is short, the detection range is small, and infrared light in a larger range can be gathered by adding the Fresnel lens, so that the detection distance and the detection range of the pyroelectric module can be effectively enlarged.

Illustratively, the number of the heat releasing modules is one, the number of the burners is plural, and the heat releasing modules are equidistant from two burners farthest from among the plurality of burners.

The temperature signals of the cookers on the plurality of burner heads are collected simultaneously by adopting the same heat release module, and the cost of hardware required by the scheme is lower. And, set up heat release module in the middle vertical plane of two burners that keep away from furthest, be favorable to detecting the temperature of the pan on each burner more balancedly.

Exemplarily, the control device is arranged below a panel of the hob.

Therefore, unnecessary exposed modules can be hidden, the neatness of the panel of the cooker is facilitated, and the user experience is good.

Exemplarily, the cooking utensils still include with the alarm device that controlling means is connected, controlling means still is used for sending alarm instruction to alarm device when the temperature of the pan on arbitrary furnace end reaches dry combustion method condition, alarm device is used for based on alarm instruction output alarm information.

Through the alarm, the user can be timely informed of the dry-burning condition, and then the user is reminded to pay attention to the current cooking state in time, so that the user experience is better.

Illustratively, the alert device includes one or more of a display, a flashing light, and a speaker.

The hardware cost of the display, the flash lamp, the loudspeaker and other devices is low, and the realization is simple.

Exemplarily, the figure of furnace end is a plurality of, the air supply line include total gas-supply pipe and with total gas-supply pipe be connected, be used for respectively to a plurality of branch gas-supply pipes of a plurality of furnace end transported gas, the figure of solenoid valve is a plurality of, a plurality of solenoid valves with a plurality of furnace end one-to-one, every solenoid valve setting is in the branch gas-supply pipe department that corresponds the furnace end, controlling means specifically is used for the temperature of the pan on arbitrary furnace end reaches when the dry combustion condition control corresponding solenoid valve cuts off the gas in the branch gas-supply pipe that corresponds or reduces the gas flow in the branch gas-supply pipe that corresponds.

The scheme can be used for stopping the furnace end which is subjected to dry burning to continue heating or reducing the gas flow of the furnace end in a targeted manner without influencing the normal work of other furnace ends.

Exemplarily, the air supply pipeline comprises a main air supply pipe, the number of the electromagnetic valves is one, the electromagnetic valves are arranged at the main air supply pipe, and the control device is specifically used for controlling the electromagnetic valves to cut off the gas in the main air supply pipe or reduce the gas flow in the main air supply pipe when the temperature of the cooker on any burner reaches the dry-burning condition.

The number of the electromagnetic valves required by the scheme is small, the control mode is simple, and the hardware cost is saved.

Exemplarily, the control device is integrated on a pulse controller of the hob.

The configuration mode of integrating the control device on the pulse controller of the cooker can be adapted to the conventional cooker, and development cost is reduced.

A series of concepts in a simplified form are introduced in the disclosure, which will be described in further detail in the detailed description section. The summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

The advantages and features of the present invention are described in detail below with reference to the accompanying drawings.

Drawings

The following drawings of the present invention are used herein as part of the present invention for understanding the present invention. There are shown in the drawings, embodiments and descriptions thereof, which are used to explain the principles of the invention. In the drawings, there is shown in the drawings,

figure 1 shows a schematic block diagram of a hob according to an embodiment of the present invention;

figure 2 shows a schematic top view of a hob according to an embodiment of the present invention; and

fig. 3 shows a schematic front view of a hob according to an embodiment of the present invention.

Wherein the figures include the following reference numerals:

the temperature measuring device comprises a cooker 100, an infrared temperature measuring module 110, an electromagnetic valve 120, a control device 130, a Fresnel lens 112, a panel 140 and a burner 210.

Detailed Description

In the following description, numerous details are provided to provide a thorough understanding of the present invention. One skilled in the art, however, will understand that the following description illustrates only a preferred embodiment of the invention and that the invention may be practiced without one or more of these details. In addition, some technical features that are well known in the art are not described in detail in order to avoid obscuring the present invention.

In order to solve the above problems at least partially, the utility model provides a cooking stove. This cooking utensils include infrared temperature measurement module, can detect the temperature of the pan on the furnace end through it, can judge whether the dry combustion method condition appears according to the temperature that detects afterwards, and cooking utensils can stop heating or reducing the gas flow of this furnace end to the pan of this furnace end top when the dry combustion method condition appears at the furnace end.

Fig. 1 shows a schematic block diagram of a hob 100 according to an embodiment of the present invention. It should be noted that the cooking stove 100 shown in fig. 1 is only an example and not a limitation of the present invention, and the present invention is not limited to the embodiment shown in fig. 1. For example, fig. 1 shows the control device 130 integrated on the pulse controller of the hob 100, but the control device 130 may be implemented independently of the pulse controller. For another example, fig. 1 shows that the cooktop 100 includes two solenoid valves (i.e., left and right solenoid valves) and two ignition needles (i.e., left and right ignition needles), but the number of the solenoid valves and the ignition needles may be arbitrary, which may be more or less.

As shown in fig. 1, the cooker 100 includes an infrared temperature measuring module 110, a solenoid valve 120, and a control device 130. The infrared temperature measurement module 110 is disposed above a panel of the stove 100, and is configured to detect a temperature of a pot on at least one burner of the stove 100. The electromagnetic valve 120 is disposed on an air supply line of the kitchen range 100, and is used for controlling the flow of the gas supplied to the at least one burner. The control device 130 is connected to the infrared temperature measurement module 110 and the electromagnetic valve 120, and is configured to receive a temperature signal of the infrared temperature measurement module 110, and control the electromagnetic valve 120 to cut off or reduce a flow rate of fuel gas delivered to any one of the burners when a temperature of a pot on the burner reaches a dry-burning condition, where the temperature exceeds a temperature threshold and/or a change rate of the temperature exceeds a change rate threshold.

Illustratively, the infrared thermometry module 110 may be disposed at any suitable location on the cooktop 100 as long as it is capable of detecting the temperature of a pot on at least one burner. Illustratively, the infrared thermometry module 118 may be disposed at the rear of the cooktop 100. The back part of the cooker can avoid obstructing the use of the cooker by users, and the cooker is more beautiful. The front and rear of the hob are relative to the user, i.e. when the user uses the hob, the half closer to the user is the front and the half farther from the user is the rear.

Fig. 2 shows a schematic top view of a hob according to an embodiment of the present invention. Fig. 3 shows a schematic front view of a hob according to an embodiment of the present invention. Fig. 2 shows the infrared temperature measuring module 110, the electromagnetic valve 120, the control device 130, and the burner 210 of the cooker 100. Fig. 3 shows the infrared thermometry module 110 and the burner 210. The position relationship between the infrared temperature measuring module and the stove head of the stove can be understood by referring to fig. 2 and 3.

It is noted that the temperature of the pot on any burner refers to the temperature at a specific location within a predetermined distance (e.g. 10 cm) around the burner, which may be pre-set at the time of production or installation of the hob 100, known to the control means 130. The temperature at the particular location may be determined by the control device 130 based on the temperature signal collected by the infrared thermometry module 110.

Illustratively, the infrared temperature measurement module 110 may be implemented by an infrared heat-sensitive sensor, such as a pyroelectric infrared sensor, a thermoelectric infrared sensor, a pneumatic infrared sensor, or a thermistor infrared sensor.

The infrared temperature measuring module 110 may detect the temperature within a preset distance (i.e., a temperature detection range thereof) in real time. The temperature detection range of the infrared temperature measurement module 110 can cover at least one burner on the stove, and the infrared temperature measurement module 110 can detect the temperature of a pot on at least one burner at one time. For example, in the case that the infrared temperature measurement module 110 includes a heat release module, the heat release module can detect 256(16 × 16) temperature points at one time, that is, the temperatures at 256 positions, so that the temperature signals of the pots on a plurality of burners can be collected simultaneously by the heat release module. The infrared temperature measuring module 110 may transmit the detected temperature signal to the control device 130. The total temperature signal collected by the infrared temperature measurement module 110 may include a temperature signal of a pot on at least one burner on the stove, and the temperature of the pot on each burner may be extracted from the total temperature signal, and the subsequent operation may be performed based on the temperature of the pot on each burner.

The solenoid valve 120 may be a solenoid valve for controlling the gas flow in the main gas pipe of the burner on the cooker, or a solenoid valve for controlling the gas flow in the sub gas pipes of the respective burners, and these embodiments will be described below. For example, the electromagnetic valve 120 may be a switch electromagnetic valve having only two states of full open and full close, and when dry combustion occurs at any burner, the electromagnetic valve 120 may be closed to cut off the main gas pipe controlled by the electromagnetic valve or cut off the gas in the sub gas pipes of the burner where the dry combustion occurs, so as to stop continuing heating the pot above the burner. For example, the electromagnetic valve 120 may be a proportional electromagnetic valve having an intermediate state other than fully open and fully closed, and when dry combustion occurs at any burner, the state (opening degree) of the electromagnetic valve 120 may be adjusted to reduce the flow rate of gas in the total gas pipe controlled by the electromagnetic valve or the branch gas pipes of the burner where dry combustion occurs, thereby reducing the fire power of the burner.

The structure, the working principle and the function of the solenoid valve in the cooker can be understood by those skilled in the art, and the details are not described herein.

The control device 130 may be implemented by using electronic components such as a comparator, a register, and a digital logic circuit, or may be implemented by using processor chips such as a single chip, a microprocessor, a Programmable Logic Controller (PLC), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), a Programmable Logic Array (PLA), and an Application Specific Integrated Circuit (ASIC), and peripheral circuits thereof.

The control device 130 can control the solenoid valve 120 to cut off the gas delivered to any burner or reduce the gas flow delivered to the burner when the temperature of the pot on any burner exceeds a temperature threshold and/or the change rate of the temperature of the pot on any burner exceeds a change rate threshold. The rate of change of the temperature may be an amount of change of the temperature per unit time. Both the temperature threshold and the rate of change threshold may be set as desired, and may be any suitable values, which are not limited herein. For example, the temperature threshold may be 298 degrees.

According to the utility model discloses cooking utensils are provided with infrared temperature measurement module on this cooking utensils, can detect the temperature of the pan on the furnace end through it, can judge whether the dry combustion method condition appears according to the temperature that detects afterwards, and cooking utensils can stop heating or reducing the gas flow of this furnace end to the pan of this furnace end top when the dry combustion method condition appears at the furnace end. The mode of monitoring the temperature of the furnace end through the infrared temperature measurement module on the stove can accurately and timely find the occurrence of the dry burning condition, thereby timely cutting off or reducing the fuel gas and effectively ensuring the safety of a kitchen.

According to one embodiment, the infrared temperature measurement module 110 includes at least one pyroelectric module, each pyroelectric module includes a fresnel lens and a pyroelectric infrared sensor, the fresnel lens and the pyroelectric infrared sensor are disposed above the panel, and a central axis of the fresnel lens is parallel to the panel.

Referring to fig. 2 and 3, a fresnel lens 112 is shown. The central axis of the fresnel lens 112 is parallel to the panel of the cooker 100, and the incident surface of the fresnel lens faces the direction of the burner, so that the infrared light around the burner can be incident into the fresnel lens. For example, the central axis of the fresnel lens may be located in a plane above the at least one burner by a predetermined distance, and the predetermined distance may be set to be smaller, so that the fresnel lens can collect the infrared light in the bottom area of the pot as much as possible. For example, the predetermined distance may be 1 centimeter, 2 centimeters, 3 centimeters, and so on. The pyroelectric infrared sensor is used for receiving the infrared light collected by the Fresnel lens and generating a corresponding electric signal. The control device 130 may determine the temperature of the pot on the burner based on the electrical signal output by the pyroelectric infrared sensor and further control the opening and closing of the electromagnetic valve based on the temperature of the pot on the burner.

In the case where the number of the pyroelectric modules is plural, the control device 130 may be shared by the plural pyroelectric modules. The fresnel lens and the pyroelectric infrared sensor of each pyroelectric module may be disposed above a panel of the cooktop. For example, the fresnel lens and the pyroelectric infrared sensor may be packaged together to form a pyroelectric module, and the pyroelectric module may be vertically disposed above a panel of the cooktop, so that a central axis of the fresnel lens is parallel to the panel, see fig. 2 and 3.

Illustratively, the pyroelectric infrared sensor may be, for example, an OTPA-16PM4S sensor. The pyroelectric infrared sensor can comprise a sensing detection element, an interference filter, a field effect tube matcher and the like. The pyroelectric infrared sensor has the following advantages: the self-body does not emit any type of radiation, and the device has small power consumption, good concealment and low price. In addition, the detection distance of the pyroelectric infrared sensor is short, the detection range is small, and infrared light in a larger range can be gathered by adding the Fresnel lens, so that the detection distance and the detection range of the pyroelectric module can be effectively enlarged.

Alternatively, the pyroelectric infrared sensor may be replaced with other types of infrared heat-sensitive sensors such as the aforementioned thermoelectric type infrared sensor.

According to an embodiment, the control device 130 may be provided below a panel of the hob 100. Referring to fig. 2, a panel 140 of the cooktop 100 is shown. For ease of understanding, fig. 2 shows the control device 130, but it is understood that the control device 130 may be hidden under the control panel 140.

The control device 130 is arranged below the panel, so that unnecessary exposed modules can be hidden, the neatness of the panel of the cooker is facilitated, and the user experience is good. The infrared temperature measuring module 110 and the control device 130 can communicate with each other in a wired or wireless manner.

According to one embodiment, the number of said heat releasing modules is one, the number of said burners is multiple, said heat releasing modules being equidistant from the two burners of said plurality of burners that are farthest apart.

The temperature signals of the cookers on the plurality of burners can be collected by the same heat release module, and the cost of hardware required by the scheme is lower. For example, in the case where the number of burners is greater than or equal to two, the heat release module may be located on the median plane of the two burners farthest away, i.e. equidistant from the two burners farthest away. The two burners farthest away may be considered as the outermost two burners on the stove, for example, the leftmost burner and the rightmost burner on the stove. The heat releasing module is arranged on the vertical plane of the two burner ends farthest away, so that the temperature of the cookware on each burner end can be detected more uniformly.

Alternatively, the number of the heat releasing modules may be multiple, for example, there is one heat releasing module corresponding to each burner, and each heat releasing module is used for acquiring a temperature signal of a pot on the corresponding burner. The scheme has strong pertinence and simple data processing, and can acquire more accurate temperature signals of each furnace end.

According to one embodiment, the control device 130 may include a signal processor, a control circuit, and an output circuit, which are connected in sequence. The signal processor may be connected to the infrared temperature measurement module 110, and is configured to convert the analog electrical signal of the infrared temperature measurement module 110 into a digital electrical signal, so as to obtain digitized temperature data. The control circuit can judge whether the temperature of the cookware on each furnace end reaches the dry-burning condition based on the temperature data, and outputs a dry-burning instruction when the temperature of the cookware on any furnace end reaches the dry-burning condition. The output circuit is connected to the solenoid valve 120, and may be configured to convert the dry combustion command into an electrical signal capable of controlling the solenoid valve 120 to shut off the gas or reduce the gas flow, and output the electrical signal to the solenoid valve 120. The output circuit is optional, and the control circuit may directly output an electric signal capable of controlling the solenoid valve 120 to shut off the gas or reduce the gas flow.

For example, the control device 130 may include at least one comparator in one-to-one correspondence with at least one burner, each comparator being configured to compare the temperature of the pot on the corresponding burner with a temperature threshold or compare the rate of change of the temperature of the pot on the corresponding burner with a rate of change threshold, and output a comparison result signal. For example, the comparator may output a high level when the temperature exceeds the temperature threshold, and a low level otherwise. For example, assuming that the stove has two burners and each of the gas distribution pipes of the burners is provided with a respective solenoid valve, the control device 130 may include two corresponding comparators, the output results of the two comparators may be regarded as two-bit digital signals, 00 represents that the temperatures of the pots on the two burners do not exceed the temperature threshold, 01 represents that the temperature of the pot on the first burner exceeds the temperature threshold, 10 represents that the temperature of the pot on the second burner exceeds the temperature threshold, and 11 represents that the temperatures of the pots on the two burners both exceed the temperature threshold. When the results of the two comparators are 00, the control device 130 may optionally not output a command. When the result of the two comparators is 01, the control device 130 may send a dry-burning command only to the electromagnetic valve corresponding to the first burner to control the electromagnetic valve to close. When the result of the two comparators is 10, the control device 130 may send a dry-burning command only to the solenoid valve corresponding to the second burner to control the solenoid valve to close. When the result of the two comparators is 11, the control device 130 may simultaneously send a dry-fire command to the solenoid valves corresponding to the first and second burners to control the two solenoid valves to close. Alternatively, the control device 130 may directly output the comparison result signal to two solenoid valves, which are closed when receiving a high level and are not operated when receiving a low level.

The above-mentioned scheme of implementing the control device 130 by using a comparator is only an example and is not a limitation of the present invention, and any other suitable scheme may be adopted to implement the control device 130, for example, a single chip microcomputer is adopted to implement the control device 130.

According to an embodiment, the cooking appliance 100 may further include an alarm device (not shown) connected to the control device 130, the control device 130 is further configured to send an alarm instruction to the alarm device when the temperature of the pot on any one of the furnace ends reaches the dry-burning condition, and the alarm device is configured to output an alarm message based on the alarm instruction.

The alarm means may be implemented using any suitable means capable of alerting the user and may be provided at any suitable location. For example, the alarm device may be provided at the front end of the hob 100, the front end being the end of the hob 100 close to the user. For example, the alarm device may be provided on a panel of the cooktop 100.

According to one embodiment, the alarm device may comprise one or more of a display, a flashlight, a speaker. Illustratively, the alert information may include one or more of audio information, video information, image information, light information, and the like.

The display may be any type of display device including, but not limited to, a Liquid Crystal Display (LCD), a light emitting diode display (LED), a cathode ray tube display (CRT), etc. The hardware cost of the display, the flash lamp, the loudspeaker and other devices is low, and the realization is simple.

According to an embodiment, the figure of furnace end is a plurality of, the air supply line include total gas supply pipe and with total gas supply pipe be connected, be used for respectively to a plurality of branch gas supply pipes of a plurality of furnace end conveying gas, the figure of solenoid valve (120) is a plurality of, a plurality of solenoid valves (120) with a plurality of furnace end one-to-one, every solenoid valve (120) set up in the branch gas supply pipe department that corresponds the furnace end, controlling means (130) specifically are used for the temperature of the pan on arbitrary furnace end reaches controlling solenoid valve (120) that correspond to cut off the gas in the branch gas supply pipe that corresponds or reduce the gas flow in the branch gas supply pipe that corresponds when the dry combustion condition.

In the case where the number of the burner is greater than or equal to two, the air supply line may include a total air supply pipe connected to a gas pipe of a home and branch air supply pipes connected to the respective burners, which may be implemented, for example, using Y-type air supply pipes. The electromagnetic valve can be independently arranged at the gas distributing pipe of each furnace end, so that the corresponding electromagnetic valve can be independently controlled when a certain furnace end is dry-burned, and the gas supply of the furnace end is cut off or reduced. The scheme can be used for stopping the furnace end which is subjected to dry burning to continue heating or reducing the gas flow of the furnace end in a targeted manner without influencing the normal work of other furnace ends.

According to one embodiment, the air supply line includes a main air supply pipe, the number of the electromagnetic valves 120 is one, the electromagnetic valves 120 are disposed at the main air supply pipe, and the control device 130 is specifically configured to control the electromagnetic valves 120 to cut off the gas in the main air supply pipe or reduce the gas flow in the main air supply pipe when the temperature of the pot on any burner reaches the dry-burning condition.

According to the embodiment, the electromagnetic valve 120 can be arranged at the total gas transmission pipe, so that the gas supply of all the burner heads is stopped or reduced no matter which burner head is subjected to dry burning. The number of the electromagnetic valves required by the scheme is small, the control mode is simple, and the hardware cost is saved.

According to an embodiment, the control device 130 may be integrated on a pulse controller of the hob. The configuration mode that the control device 130 is integrated on the pulse controller of the cooker can be adapted to the conventional cooker, which is beneficial to reducing the development cost.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front", "rear", "upper", "lower", "left", "right", "horizontal", "vertical", "horizontal" and "top", "bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner" and "outer" refer to the interior and exterior relative to the contours of the components themselves.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe the spatial relationship of one or more components or features shown in the figures to other components or features. It is to be understood that the spatially relative terms are intended to encompass not only the orientation of the component as depicted in the figures, but also different orientations of the component in use or operation. For example, if an element in the drawings is turned over in its entirety, the articles "over" or "on" other elements or features will include the articles "under" or "beneath" the other elements or features. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". Further, these components or features may also be positioned at various other angles (e.g., rotated 90 degrees or other angles), all of which are intended to be encompassed herein.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, elements, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many more modifications and variations are possible in light of the teaching of the present invention and are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. Hob (100), characterized in that it comprises:

the infrared temperature measurement module (110) is arranged above a panel (140) of the stove (100) and is used for detecting the temperature of a pot on at least one stove head (210) on the stove (100);

the electromagnetic valve (120) is arranged on an air supply pipeline of the kitchen range (100) and is used for controlling the flow of the gas conveyed to the at least one burner;

and the control device (130) is respectively connected with the infrared temperature measuring module (110) and the electromagnetic valve (120) and is used for receiving the temperature signal of the infrared temperature measuring module (110) and controlling the electromagnetic valve (120) to cut off the fuel gas delivered to the burner (210) or reduce the fuel gas flow delivered to the burner (210) when the temperature of a cooker on any burner (210) reaches a dry-burning condition, wherein the dry-burning condition is that the temperature exceeds a temperature threshold value and/or the change rate of the temperature exceeds a change rate threshold value.

2. Hob (100) according to claim 1, characterized in that the infrared thermometry module (110) comprises at least one pyroelectric module, each pyroelectric module comprising a Fresnel lens (112) and a pyroelectric infrared sensor, the Fresnel lens (112) and the pyroelectric infrared sensor being arranged above the panel (140) and the central axis of the Fresnel lens (112) being parallel to the panel (140).

3. The cooktop (100) of claim 2, in which the number of heat releasing modules is one, the number of burners (210) is multiple, and the heat releasing modules are equidistant from two of the plurality of burners (210) that are farthest apart.

4. Hob (100) according to claim 1, characterized in that the control means (130) are arranged below a panel (140) of the hob (100).

5. Hob (100) according to claim 1, wherein the hob (100) further comprises an alarm device connected with the control device (130), the control device (130) further being adapted to send an alarm instruction to the alarm device when the temperature of a pot on any one of the burner (210) reaches the dry-fire condition,

the alarm device is used for outputting alarm information based on the alarm instruction.

6. Hob (100) according to claim 5, characterized in that said alarm means comprise one or more of a display, a flashing light and a speaker.

7. The cooking utensil (100) according to any one of the claims 1 to 6, wherein the number of the burner (210) is plural, the air supply pipeline comprises a main air supply pipe and a plurality of sub air supply pipes which are connected with the main air supply pipe and are respectively used for supplying gas to the plurality of burners (210), the number of the electromagnetic valves (120) is plural, the plurality of electromagnetic valves (120) are in one-to-one correspondence with the plurality of burners (210), each electromagnetic valve (120) is arranged at the sub air supply pipe of the corresponding burner (210),

the control device (130) is specifically used for controlling the corresponding electromagnetic valve (120) to cut off the gas in the corresponding sub gas transmission pipe or reduce the gas flow in the corresponding sub gas transmission pipe when the temperature of the cookware on any burner (210) reaches the dry burning condition.

8. The hob (100) according to any one of the claims 1 to 6, characterized in that the air supply line comprises a total air supply pipe, the number of the solenoid valves (120) is one, the solenoid valves (120) are arranged at the total air supply pipe,

the control device (130) is specifically used for controlling the electromagnetic valve (120) to cut off the gas in the main gas transmission pipe or reduce the gas flow in the main gas transmission pipe when the temperature of the cookware on any burner (210) reaches the dry-burning condition.

9. Hob (100) according to anyone of the claims 1 to 6, wherein the control means (130) is integrated on a pulse controller of the hob (100).