Stove and range hood

Abstract

The utility model provides a stove and a range hood, relates to the technical field of overflow protection and dry burning prevention of electric appliances, and aims to prevent liquid overflow or dry burning possibly caused by the fact that cookware heated on the stove reaches a boiling point. The stove comprises a cooking bench, a range hood and an infrared sensor assembly. And at least one cooking range is arranged on the cooking bench. And the range hood is arranged above the cooking bench and is connected with the cooking bench. The infrared sensor assembly comprises at least one infrared sensor which is connected with the range hood and arranged on the side, close to the cooking range, of the range hood. And the range hood is connected with the infrared sensor. The infrared sensors can detect the temperature according to the cooking pots arranged above the corresponding cooking ranges and send temperature data to the range hood. The range hood is configured to receive the temperature data and send a first signal to the cooking bench after the temperature data is continuously larger than a boiling threshold value for a preset time. And the cooking bench is configured to control the corresponding cooking range to reduce the fire or control the corresponding cooking range to stop working under the condition that the first signal is received.

Description

Technical Field

[0001] The utility model relates to the technical field of overflow protection and dry - burning prevention of electrical appliances, in particular to a cooking stove and a range hood. Background Art

[0002] In people's daily life, the use of cooking stoves is indispensable. When the cooking time of a cooking pot on the cooking stove is too long, the liquid in the pot may overflow due to violent boiling, increasing potential safety hazards.

[0003] In order to detect liquid overflow in a timely manner, the prior art often measures the liquid temperature in the cooking pot by setting a temperature sensor at the stove head. When it is determined that the liquid reaches the boiling point, the fire power of the cooking stove is controlled to be turned off.

[0004] However, due to the different materials of cooking pots, their heating curves are also different. Therefore, using a temperature sensor to detect overflow may result in a detection lag and a large error in overflow detection. Summary of the Utility Model

[0005] An embodiment of the utility model provides a cooking stove and a range hood, which can protect against the phenomenon of liquid overflow or dry - burning that may occur when a cooking pot heated on the cooking stove reaches the boiling point.

[0006] To achieve the above object, the embodiment of the utility model adopts the following technical solutions:

[0007] In a first aspect, the present application provides a cooking stove, including a cooking range, a range hood, and an infrared sensor assembly. At least one stove head is provided on the cooking range. The range hood is arranged above the cooking range and is connected to the cooking range. The infrared sensor assembly includes at least one infrared sensor, which is arranged on one side of the range hood close to the stove head. The range hood is connected to the infrared sensor. The infrared sensor is configured to: perform temperature detection according to the infrared radiation emitted by a cooking pot arranged above the corresponding stove head, and send temperature data to the range hood. The range hood is configured to: receive the temperature data, and after the temperature data continuously exceeds the boiling threshold for a preset time, send a first signal to the cooking range. The cooking range is configured to: when receiving the first signal, control the corresponding stove head to reduce the fire power or control the corresponding stove head to stop working.

[0008] The infrared sensor can obtain the temperature of the liquid in the cooking pot by measuring the infrared radiation emitted by the cooking pot on the cooking hob. When there are multiple cooking hobs on the cooking range, the infrared sensor assembly also includes multiple infrared sensors to ensure that the temperature of each cooking pot placed above the cooking hob can be measured. The range hood is connected to the infrared sensor and also to the cooking range. When the temperature data received by the range hood is greater than the boiling threshold and lasts for a preset time, it means that the liquid in the pot is about to boil. Since liquid boiling is very likely to cause the liquid to overflow, the range hood sends a first signal to the cooking range. When the cooking range receives the first signal, it reduces the firepower of the corresponding cooking hob or directly turns off the corresponding cooking hob. This effectively prevents the liquid in the cooking pot from overflowing, reduces the number of times the user needs to clean the spilled liquid, enhances the safety of the cooking range, and improves the user experience.

[0009] As a possible implementation, the range hood includes a first processor, and the cooking range includes a second processor. The first processor is connected to the second processor. The first processor is connected to the infrared sensor assembly.

[0010] As a possible implementation, when the cooking range controls the corresponding cooking hob to reduce the firepower, when the temperature data received by the first processor is less than or equal to the first preset value, the first processor is configured to: send a second signal to the second processor. The second processor is configured to: control the corresponding cooking hob to increase the firepower when receiving the second signal.

[0011] As a possible implementation, the cooking range includes one cooking hob, the infrared sensor assembly includes one infrared sensor, and the range hood includes a first processor. The first end of the infrared sensor is electrically connected to the first voltage terminal, the second end of the infrared sensor is electrically connected to the first pin of the first processor, the third end of the infrared sensor is electrically connected to the second pin of the first processor, and the fourth end of the infrared sensor is electrically connected to the second voltage terminal.

[0012] As a possible implementation, the cooking range includes multiple cooking hobs, and the range hood includes a first processor. The infrared sensor assembly includes multiple infrared sensors, and the multiple infrared sensors correspond to the multiple cooking hobs one by one. One infrared sensor is configured to detect the temperature data of the pot above the corresponding cooking hob. The first processor includes multiple detection pin groups, and the multiple detection pin groups are respectively connected to the multiple infrared sensors. Each detection pin group includes a first pin and a second pin. The first end of the infrared sensor is electrically connected to the first voltage terminal, the second end of the infrared sensor is electrically connected to the first pin of the corresponding detection pin group on the first processor, the third end of the infrared sensor is electrically connected to the second pin of the corresponding detection pin group on the first processor, and the fourth end of the infrared sensor is electrically connected to the second voltage terminal.

[0013] As a possible implementation, the range hood includes a first wireless module, a first processor, and a first antenna, and the cooking range includes a second wireless module, a second processor, and a second antenna. The input end of the first wireless module is electrically connected to the first processor, and the output end of the first wireless module is electrically connected to the first antenna. The input end of the second wireless module is electrically connected to the second processor, and the output end of the second wireless module is electrically connected to the second antenna. The cooking range and the range hood are communicatively connected through the first wireless module and the second wireless module.

[0014] As a possible implementation, the first wireless module includes: a first inductor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a first resistor, a second resistor, and a third resistor. The first pole of the first capacitor is electrically connected to the third pin of the first processor, and the second pole of the first capacitor is electrically connected to the fourth pin of the first processor. The first end of the first inductor is electrically connected to the third pin of the first processor, and the second end of the first inductor is electrically connected to the first pole of the second capacitor. The second pole of the second capacitor is electrically connected to the fourth pin of the first processor. The first pole of the third capacitor is electrically connected to the second end of the first inductor, the second pole of the third capacitor is electrically connected to the first end of the first resistor, the second end of the first resistor is electrically connected to the first pole of the fourth capacitor, and the second pole of the fourth capacitor is electrically connected to the second voltage terminal. The first end of the second resistor is electrically connected to the second end of the first resistor, the second end of the second resistor is electrically connected to the first pole of the fifth capacitor, the second pole of the fifth capacitor is electrically connected to the second voltage terminal, the first end of the third resistor is electrically connected to the second end of the second resistor, and the second end of the third resistor is electrically connected to the first antenna.

[0015] As a possible implementation, a lens is provided on the infrared sensor.

[0016] In a second aspect, the present application further provides a range hood. The range hood is disposed above the cooking range, and at least one burner is provided on the cooking range. The range hood includes an infrared sensor assembly. The infrared sensor assembly includes at least one infrared sensor, which is connected to the range hood and disposed on a side of the range hood close to the burner. The infrared sensor is configured to: perform temperature detection based on infrared radiation emitted by a cooking pot disposed above the corresponding burner, and send temperature data to the range hood. The range hood is configured to: receive the temperature data, and after the temperature data continuously exceeds the boiling threshold for a preset time, send a first signal to the cooking range. The first signal is configured to cause the cooking range to control the corresponding burner to reduce the firepower or control the corresponding burner to stop working.

[0017] As a possible implementation, the range hood includes a first processor, and the first processor is connected to the infrared sensor assembly. When the temperature data received by the first processor is less than or equal to a first preset value when the cooking range controls the corresponding burner to reduce the firepower, the first processor is configured to: send a second signal to the second processor. The second signal is configured to cause the cooking range to control the corresponding burner to increase the firepower.

[0018] Among them, the beneficial effects of the second aspect and its possible implementation manners can be referred to the first aspect, which will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings are used to provide a further understanding of the solutions of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the technical solutions of the present utility model, and do not constitute a limitation to the technical solutions of the present utility model.

[0020] Figure 1 A schematic diagram of a cooking appliance provided by an embodiment of the present application;

[0021] Figure 2 A schematic diagram of the composition of a cooking appliance provided by an embodiment of the present application;

[0022] Figure 3 A schematic diagram of another cooking appliance provided by an embodiment of the present application;

[0023] Figure 4 A schematic diagram of the connection relationship between components in a cooking appliance provided by an embodiment of the present application;

[0024] Figure 5 A schematic diagram of another cooking appliance provided by an embodiment of the present application;

[0025] Figure 6 A schematic diagram of the change in the temperature of the liquid in the pot provided by an embodiment of the present application;

[0026] Figure 7 A schematic diagram of the connection relationship between components in another cooking appliance provided by an embodiment of the present application;

[0027] Figure 8 A schematic diagram of a partial connection of the internal composition of a cooking appliance provided by an embodiment of the present application;

[0028] Figure 9 A schematic diagram of a cooking appliance provided by an embodiment of the present application;

[0029] Figure 10 A schematic diagram of the connection between a first processor and an infrared sensor assembly provided by an embodiment of the present application;

[0030] Figure 11 A schematic diagram of the connection relationship between components in another cooking appliance provided by an embodiment of the present application;

[0031] Figure 12 A schematic diagram of the specific composition and connection of a first wireless module provided by an embodiment of the present application;

[0032] Figure 13Another schematic diagram of the connection relationship of each component in the cooking appliance provided by the embodiment of the present application;

[0033] Figure 14 Another schematic diagram of the connection relationship of each component in the cooking appliance provided by the embodiment of the present application. Detailed implementation manners

[0034] The embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

[0035] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0036] In the present application, "at least one" means one or more, and "a plurality" means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone, where A and B may be singular or plural. "At least one (item)" or similar expressions thereof refer to any combination of these items, including any combination of single item (item) or plural items (items). For example, at least one (item) of a, b, or c may represent: a, b, c, a - b, a - c, b - c, or a - b - c, where a, b, and c may be single or multiple. The character " / " generally represents an "or" relationship between the associated objects before and after. In addition, in the embodiments of the present application, the terms "first", "second", etc. do not limit the quantity and execution order.

[0037] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0038] It should be noted that in this application, words such as "exemplary" or "for example" are used to represent examples, illustrations or explanations. Any embodiment or design solution described as "exemplary" or "for example" in this application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner.

[0039] In the description of this specification, specific features, structures, materials or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0040] In people's daily lives, the use of cooking appliances is indispensable. Exemplarily, as Figure 1 shown, the cooking appliance includes a cooking range 1, burners 2, a gas delivery pipeline 3, and a gas delivery valve 4. A gas delivery valve 4 is usually provided on the gas delivery pipeline 3. The opening and closing of the gas delivery valve 4 can control whether gaseous fuels such as manufactured gas, liquefied petroleum gas, and natural gas are output to the burner 2.

[0041] Combined with Figure 1 , a switch knob 5 is also provided on the cooking appliance. The switch knob 5 can control the ignition and extinguishing of the burner 2 and the size of the flame generated on the burner 2. For example, when the switch knob 5 is rotated to the ON position, that is, the open state, the burner 2 ignites. When the switch knob 5 is rotated to the OFF position, that is, the closed state, the burner 2 extinguishes. When the switch knob 5 is gradually rotated from the ON position to the other side of the OFF position, the opening degree of the gas delivery valve 4 also continuously increases, and the volume of gaseous fuels such as manufactured gas, liquefied petroleum gas, and natural gas passing through the gas delivery pipeline 3 also increases, and the flame generated on the burner 2 gradually becomes larger.

[0042] Exemplarily, combined with Figure 1 , when a user is cooking, the switch knob 5 on the cooking appliance is rotated to the open state, and the cookware to be cooked is placed on the burner 2. At this time, the gas delivery valve 4 is switched from the closed state to the open state, so that gaseous fuels such as manufactured gas, liquefied petroleum gas, and natural gas can be delivered to the burner 2 through the outlet of the gas delivery pipeline 3 and ignited by the ignition nozzle on the burner 2, and the burner 2 successfully ignites and generates a flame.

[0043] After the burner 2 successfully ignites, the gas delivery valve 4 remains in the open state, and gaseous fuels such as manufactured gas, liquefied petroleum gas, and natural gas need to be continuously output to the burner 2 through the outlet of the gas delivery pipeline 3 to ensure that there is sufficient fuel supply for the flame on the burner 2. When the opening degree of the gas delivery valve 4 is higher, the supply degree of gaseous fuels such as manufactured gas, liquefied petroleum gas, and natural gas is greater, and the firepower is stronger. When the closing degree of the gas delivery valve 4 is higher, the supply degree of gaseous fuels such as manufactured gas, liquefied petroleum gas, and natural gas is smaller, and the firepower is weaker.

[0044] When the user finishes cooking, rotate the switch knob 5 on the cooking appliance to the off state. The gas delivery valve 4 changes from the open state to the closed state, blocking the delivery of gaseous fuels such as artificial gas, liquefied petroleum gas, and natural gas to the outlet of the gas delivery pipeline 3, and the flame on the burner head 2 goes out.

[0045] During the entire process of heating the cookware, the liquid in the cookware gradually approaches the boiling point as the heating time increases and finally reaches the boiling point. Generally speaking, when the liquid in the cookware reaches the boiling point, the switch knob can be turned to the OFF position to turn off the fire. However, the user may forget to turn off the switch knob, resulting in the liquid in the cookware continuing to boil. In this case, it is very likely that the liquid in the cookware will overflow, and the liquid in the cookware will overflow onto the stove base, polluting the stove base. When the liquid overflow lasts for a long time and the user still does not turn off the switch knob, the liquid in the cookware may be burned dry, which is very likely to cause damage to the cookware. As the amount of liquid overflowing onto the stove base increases, the safety hazard also increases significantly.

[0046] Therefore, whether it is possible to accurately detect whether the liquid in the cookware heated on the cooking appliance overflows and automatically adjust the firepower when there is liquid overflow has become an important criterion for measuring the intelligence of the cooking appliance.

[0047] Currently, it is usually adopted to set a temperature sensor at the burner head of the cooking appliance to detect the overflow of the heated cookware. The temperature sensor collects the temperature of the cookware and makes a judgment on the liquid state inside the cookware according to the collected temperature, determines whether the liquid inside the cookware is in a boiling state, and thus adjusts the size of the firepower of the cooking appliance.

[0048] However, since the temperature sensor is set at the burner head, it will inevitably be affected by the flame at the burner head, and its accuracy is questionable. And because the materials of the cookware heated on the cooking appliance are different, their heating curves are also different. For example, for a casserole, due to the heat storage property of the casserole material, the heating curve of the casserole tends to be non-linear and irregular. When the temperature sensor determines that the liquid in the casserole reaches the boiling state and then turns down the firepower, it is very likely that an overflow has already occurred.

[0049] In view of this, the embodiment of the present application provides a cooking appliance. Exemplarily, the composition of the cooking appliance is as Figure 2 shown. The cooking appliance includes a stove top 1, a range hood 6, and an infrared sensor assembly 7. At least one burner head 2 is provided on the stove top 1. The stove top 1 serves as the base of the burner head 2 and plays a role in supporting and fixing. The user can operate the buttons on the stove top 1, such as Figure 1The switch knob 5 in it realizes the control of the firepower of the burner 2. Due to the continuous improvement of intelligence, in addition to the user using the operation buttons on the cooking stove 1 to control the firepower of the burner 2, the cooking stove can also realize the automatic control of the burner through the internal circuit, and realize the function of adjusting the firepower size of the burner 2.

[0050] As a possible implementation, as Figure 3 shown, the range hood 6 is arranged above the cooking stove 1. The range hood is also known as the extractor hood or the chimney hood, which can quickly extract the harmful cooking fumes generated by the burning and cooking of food during the operation of the cooking appliance, discharge them outdoors, and at the same time condense and collect the cooking fumes to reduce pollution, thereby purifying the use environment of the kitchen.

[0051] The temperature measurement principle of the infrared sensor is the blackbody radiation law. All objects in nature above absolute zero are constantly radiating energy outward. The magnitude of the energy radiated by the object outward and its distribution according to the wavelength are closely related to its surface temperature. Generally speaking, the higher the temperature of the object, the stronger the infrared radiation ability of the object. The infrared sensor judges the temperature of the object by collecting the energy radiated by the object outward.

[0052] Exemplarily, as Figure 4 shown, Figure 4 shows the connection relationship of each component in the cooking appliance. Referring to Figure 4 , the range hood 6 is connected to the cooking stove 1, and the infrared sensor assembly 7 includes at least one infrared sensor and is connected to the range hood 6. The infrared sensor is arranged on one side of the range hood 6 close to the burner 2. Exemplarily, as Figure 5 shown.

[0053] "The infrared sensor assembly 7 includes at least one infrared sensor and is connected to the range hood 6" means that each infrared sensor in the infrared sensor assembly is connected to the range hood. Referring to Figure 5 , "The infrared sensor 71 is arranged on one side of the range hood 6 close to the burner 2". The infrared sensor has a certain range for collecting and detecting infrared radiation, that is, Figure 5 the area within the two dotted lines in, the infrared sensor is arranged on one side of the range hood close to the burner, the infrared sensor is closer to the cooking pot, and the detection range of the infrared sensor can better cover the area of the infrared radiation emitted by the cooking pot, so that the heating state of the liquid in the cooking pot can be judged more accurately, and more accurate overflow protection can be realized.

[0054] The infrared sensor is configured to: detect the temperature based on the infrared radiation emitted by the cooking pot set above the corresponding cooking hob, and send the temperature data to the range hood. The range hood is configured to: receive the temperature data, and send a first signal to the cooking hob after the temperature data continuously exceeds the boiling threshold for a preset time. The cooking hob is configured to: control the corresponding cooking hob to reduce the heating power or stop working when receiving the first signal.

[0055] As a possible implementation, the cooking hob is wirelessly connected to the range hood. When the user starts cooking, the gas delivery valve is opened, the cooking hob is ignited, and a flame is generated to start heating the cooking pot located above the cooking hob. At this time, the cooking hob will communicate with the range hood to inform the range hood to start cooking. The range hood controls the infrared sensor assembly to work, and the infrared sensor starts to collect the infrared radiation emitted by the cooking pot above the cooking hob to obtain the temperature data of the liquid in the cooking pot.

[0056] It should be noted that since there may be multiple cooking hobs on the cooking appliance, and the user may only use one of the multiple cooking hobs when cooking food, that is, only one cooking hob is in the working state of firing, and the rest of the cooking hobs are in the closed state. To ensure that the temperature of the liquid in the cooking pot on each cooking hob can be accurately detected, in the case of having multiple cooking hobs, there are usually multiple infrared sensors in the infrared sensor assembly. As a possible implementation, one infrared sensor corresponds to one cooking hob, and one infrared sensor is set above one cooking hob to detect the temperature of the liquid in the cooking pot above the cooking hob.

[0057] When the user only uses one or several of the multiple cooking hobs on the cooking hob, after the cooking hob communicates with the range hood, the range hood will control the infrared sensor above the corresponding working cooking hob to work. The infrared sensors above the cooking hobs in the non-working state do not work, saving energy and reducing the user's cost.

[0058] Exemplarily, referring to Figure 6 , Figure 6 shows the change in the temperature of the liquid in the cooking pot. Referring to Figure 6 , Figure 6 as shown, the abscissa represents time and the ordinate represents temperature. Figure 6 The heating process in Figure 6 can be divided into multiple stages. As can be seen from

[0059] The essence of pot overflow is caused by the failure of the bubbles after the liquid boils to break in time when mixed with the ingredients. That is to say, the pot overflow phenomenon usually occurs in the B-D stage. According to practice, when the temperature of the liquid in the cooking pot just reaches the temperature corresponding to point B, that is, when the temperature of the liquid in the cooking pot reaches the boiling point, the pot overflow phenomenon will not occur. After the temperature of the liquid in the cooking pot reaches the boiling point, with the increase of the heating time, the pot overflow phenomenon gradually increases.

[0060] Therefore, the range hood of the present application is configured to: when the received temperature data is continuously greater than the boiling threshold for a preset time, send a first signal to the stove. When the temperature data received by the range hood is greater than the boiling threshold, it indicates that the liquid in the pot has reached the boiling point at this time. Since the pot overflow phenomenon will not occur when the temperature of the liquid in the cooking pot just reaches the boiling point, in order to prevent misjudgment, the temperature data needs to be continuously greater than the boiling threshold for a certain time to indicate that the liquid in the pot is boiling at this time. As a possible implementation, the preset time t should meet the following conditions:

[0061] From the moment t1 when the liquid in the cooking pot reaches the boiling point, to the continuous heating for the preset time t, no pot overflow phenomenon will occur during this heating process. Exemplarily, referring to Figure 6 For example, the moment when the liquid in the cooking pot reaches the boiling point is the moment corresponding to point B. After the cooking pot continues to heat for the preset time t, it is the moment corresponding to point C. No pot overflow will occur in the B-C stage. After C, that is, Figure 6 in the C-D stage, the pot overflow phenomenon is likely to occur.

[0062] When the temperature data received by the range hood is greater than the boiling threshold and lasts for the preset time, it means that the liquid in the pot is about to boil. Since once the liquid boils, it is very likely to cause the liquid to overflow, the range hood sends a first signal to the stove. When the stove receives the first signal, it reduces the firepower of the corresponding burner or directly turns off the corresponding burner. This effectively prevents the liquid in the cooking pot from overflowing, reduces the number of times the user needs to clean the spilled liquid, enhances the safety of the stove, and improves the user experience. Since the infrared sensor has high sensitivity, compared with the temperature sensor that needs heat conduction to the probe to detect the temperature, the infrared sensor has a wider speed of collecting thermal radiation, so the response speed is faster, and the temperature data transmitted in real time is more frequent, which can more effectively prevent the pot overflow phenomenon.

[0063] As a possible implementation, such as Figure 7As shown, the range hood 6 includes a first processor 61, and the cooking stove 1 includes a second processor 11. The first processor 61 is connected to the second processor 11. Exemplarily, the first processor 61 is wirelessly connected to the second processor 11. The first processor 61 is connected to the infrared sensor assembly 7. The second processor 11 in the cooking stove 1 is responsible for controlling the firepower of each burner. Exemplarily, the second processor 1 controls the opening degree of the gas delivery valve on the gas delivery pipeline corresponding to each burner to control the firepower of each burner. The first processor 61 in the range hood 6 is responsible for controlling the opening and closing of each infrared sensor in the infrared sensor assembly 7.

[0064] As a possible implementation, when the cooking stove controls the corresponding burner to reduce the firepower and the temperature data received by the first processor is less than or equal to the first preset value, the first processor is configured to: send a second signal to the second processor. The second processor is configured to: control the corresponding burner to increase the firepower when receiving the second signal.

[0065] When the temperature data received by the range hood is greater than the boiling threshold for a preset time and a first signal is sent to the cooking stove, the cooking stove will control the firepower of the corresponding burner. The control of the firepower of the corresponding burner by the cooking stove includes two forms. The first is to directly turn off the firepower of the corresponding burner completely. At this time, the temperature of the liquid in the cooking pot will continue to drop due to the loss of heat source and fall below the boiling point to prevent overflow.

[0066] Since for the cooking of some ingredients, for example, for making soup, the cooking of the ingredients does not end after reaching the boiling point, and often slow simmering over low heat is required, the gas supply cannot be completely cut off, which is the second way of controlling the firepower of the burner by the cooking stove. At this time, the cooking stove controls the firepower of the corresponding burner to decrease, so that the heat dissipation of the liquid in the cooking pot is greater than the heat absorption. The temperature of the liquid in the cooking pot drops until the temperature data received by the first processor is lower than the boiling threshold. The first processor sends a second signal to the second processor, and the second processor controls the burner to increase the firepower, so that the heat absorption of the liquid in the cooking pot is greater than the heat dissipation, and the temperature of the liquid in the pot rises to reach the boiling point again. When the temperature data received by the first processor is greater than the boiling threshold and lasts for a preset time, the first processor sends a first signal to the second processor again to reduce the firepower of the burner, and so on until the cooking is completed.

[0067] As a possible implementation, as Figure 5 shown, the cooking stove includes a burner 2, the infrared sensor assembly includes an infrared sensor 71, and the range hood includes a first processor. The first processor is connected to the infrared sensor. More specifically, as Figure 8As shown, the first end 71-1 of the infrared sensor 71 is electrically connected to the first voltage terminal VCC, the second end 71-2 of the infrared sensor 71 is electrically connected to the first pin 61-1 of the first processor 61, the third end 71-3 of the infrared sensor 71 is electrically connected to the second pin 61-2 of the first processor 61, and the fourth end 71-4 of the infrared sensor 71 is electrically connected to the second voltage terminal GND.

[0068] The infrared sensor realizes information interaction with the first processor through the second end and the third end, and transmits the measured temperature data to the first processor. The first processor controls the on and off of the infrared sensor through the first pin and the second pin.

[0069] As a possible implementation, the cooking stove includes multiple burners, and the range hood includes a first processor. The infrared sensor assembly includes multiple infrared sensors, and the multiple infrared sensors correspond to the positions of the multiple burners one by one. One infrared sensor is configured to detect the temperature data of the cookware above the corresponding burner.

[0070] The first processor includes multiple detection pin groups, and the multiple detection pin groups are respectively connected to the multiple infrared sensors. Each detection pin group includes a first pin and a second pin. The first end of the infrared sensor is electrically connected to the first voltage terminal, the second end of the infrared sensor is electrically connected to the first pin of the corresponding detection pin group on the first processor, the third end of the infrared sensor is electrically connected to the second pin of the corresponding detection pin group on the first processor, and the fourth end of the infrared sensor is electrically connected to the second voltage terminal.

[0071] Exemplarily, as Figure 9 shown, Figure 9 shows the case where there are two burners on the cooking stove. Referring to Figure 9 , the cooking stove 1 includes a first burner 12 and a second burner 13. The infrared sensor assembly includes a first infrared sensor 72 and a second infrared sensor 73. The first infrared sensor 72 is arranged above the first burner 12 and is used to detect the liquid temperature in the cooking pot on the first burner 12. The second infrared sensor 73 is arranged above the second burner 13 and is used to detect the liquid temperature in the cooking pot on the second burner 13.

[0072] In such a case, the first processor includes two detection pin groups: a first detection pin group 611 and a second detection pin group 612. The first detection pin group 611 corresponds to the first infrared sensor 72, and the second detection pin group 612 corresponds to the second infrared sensor 73.

[0073] The connection between the first processor and the infrared sensor assembly is referred to Figure 10, one end 72-1 of the first infrared sensor 72 is electrically connected to the first voltage terminal VCC, and the second end 72-2 of the first infrared sensor 72 is electrically connected to the first pin 611-1 of the first measurement pin group 611. The third end 72-3 of the first infrared sensor 72 is electrically connected to the second pin 611-2 of the first measurement pin group 611. The fourth end 72-4 of the first infrared sensor 72 is electrically connected to the second voltage terminal GND.

[0074] One end 73-1 of the second infrared sensor 73 is electrically connected to the first voltage terminal VCC, and the second end 73-2 of the second infrared sensor 73 is electrically connected to the first pin 612-1 of the second measurement pin group 612. The third end 73-3 of the second infrared sensor 73 is electrically connected to the second pin 612-2 of the second measurement pin group 612. The fourth end 73-4 of the second infrared sensor 73 is electrically connected to the second voltage terminal GND.

[0075] The first infrared sensor realizes information interaction with the first processor through the second end and the third end, transmits the measured temperature data to the first processor, and the first processor controls the on and off of the first infrared sensor through the first pin and the second pin in the first detection pin group. The second infrared sensor realizes information interaction with the first processor through the second end and the third end, transmits the measured temperature data to the first processor, and the first processor controls the on and off of the second infrared sensor through the first pin and the second pin in the second detection pin group.

[0076] As a possible implementation, as Figure 11 shown, the range hood 6 includes a first wireless module 62, a first processor 61, and a first antenna 63, and the stove 1 includes a second wireless module 14, a second processor 11, and a second antenna 15. The input end 62-1 of the first wireless module 62 is electrically connected to the first processor 61, and the output end 62-2 of the first wireless module 62 is electrically connected to the first antenna 63. The input end 14-1 of the second wireless module 14 is electrically connected to the second processor 11, and the output end 14-2 of the second wireless module 14 is electrically connected to the second antenna 15. The stove 1 and the range hood 6 are communicatively connected through the first wireless module 62 and the second wireless module 14.

[0077] As a possible implementation, as Figure 12 shown, Figure 12 shows the specific composition and connection of the first wireless module. Referring to Figure 12 , the first wireless module 62 includes: a first inductor 621, a first capacitor 622, a second capacitor 623, a third capacitor 624, a fourth capacitor 625, a fifth capacitor 626, a first resistor 627, a second resistor 628, and a third resistor 629.

[0078] The first pole of the first capacitor 622 is electrically connected to the third pin 61-3 of the first processor 61, and the second pole of the first capacitor 622 is electrically connected to the fourth pin 61-4 of the first processor 61. The first end of the first inductor 621 is electrically connected to the third pin 61-3 of the first processor 61, the second end of the first inductor 621 is electrically connected to the first pole of the second capacitor 622, and the second pole of the second capacitor 622 is electrically connected to the fourth pin 61-4 of the first processor 61. The first pole of the third capacitor 624 is electrically connected to the second end of the first inductor 621, the second pole of the third capacitor 624 is electrically connected to the first end of the first resistor 627, the second end of the first resistor 627 is electrically connected to the first pole of the fourth capacitor 625, and the second pole of the fourth capacitor 625 is electrically connected to the second voltage terminal GND. The first end of the second resistor 628 is electrically connected to the second end of the first resistor 627, the second end of the second resistor 628 is electrically connected to the first pole of the fifth capacitor 626, the second pole of the fifth capacitor 626 is electrically connected to the second voltage terminal GND, the first end of the third resistor 629 is electrically connected to the second end of the second resistor 628, and the second end of the third resistor 629 is electrically connected to the first antenna 63.

[0079] As a possible implementation, as Figure 13 shown, the internal circuit of the range hood further includes a sixth capacitor 630. The first pole of the sixth capacitor 630 is electrically connected to the sixth pin 61-6 of the first processor 61, and the second pole of the sixth capacitor 630 is electrically connected to the second voltage terminal GND.

[0080] The first end of the second inductor 631 is electrically connected to the ninth pin 61-9 of the first processor 61, the second end of the second inductor 631 is electrically connected to the first pole of the seventh capacitor 632, and the second pole of the seventh capacitor 632 is electrically connected to the second voltage terminal GND. The first pole of the eighth capacitor 633 is electrically connected to the seventh pin 61-7 of the first processor 61, and the second pole of the eighth capacitor 633 is electrically connected to the second voltage terminal GND. The first pole of the ninth capacitor 634 is electrically connected to the seventh pin 61-7 of the first processor 61, and the second pole of the ninth capacitor 634 is electrically connected to the second voltage terminal GND. The seventh pin 61-7 of the first processor 61 is electrically connected to the first voltage terminal VCC. One end of the transient suppression diode 635 is electrically connected to the first voltage terminal VCC, and the other end of the transient suppression diode 635 is electrically connected to the second voltage terminal GND.

[0081] In some embodiments, as Figure 14 shown, Figure 14 shows the connection of the crystal oscillator circuit to the first processor. Refer to Figure 14, the first processor 21 further includes a tenth pin 61-10. The crystal oscillator circuit 30 is electrically connected to the tenth pin 61-10 of the first processor 61. The crystal oscillator circuit 30 includes a crystal oscillator 31 and a tenth capacitor 32. The first pin 31-1 of the crystal oscillator 31 is electrically connected to the first pole of the tenth capacitor 32, and the second pole of the tenth capacitor 32 is electrically connected to the second voltage terminal GND. The first pin 31-1 of the crystal oscillator 31 is also electrically connected to the tenth pin 61-10 of the first processor 61. The second pin 31-2 of the crystal oscillator 31 is electrically connected to the second voltage terminal GND, the third pin 31-3 of the crystal oscillator 31 is electrically connected to the second voltage terminal GND, and the fourth pin 31-4 of the crystal oscillator 31 is electrically connected to the second voltage terminal GND. As a possible implementation, the crystal oscillator 31 is a passive crystal oscillator.

[0082] As a possible implementation, a lens is provided on the infrared sensor. By providing a lens on the infrared sensor, the infrared sensor is protected from the interference of oil stains, ensuring the accuracy of the temperature detected by the infrared sensor and increasing the service life.

[0083] The present application also provides a range hood. The range hood is arranged above the cooking stove, and at least one burner is arranged on the cooking stove. The range hood includes an infrared sensor assembly. The infrared sensor assembly includes at least one infrared sensor, which is connected to the range hood and arranged on one side of the range hood close to the burner. The infrared sensor is configured to: detect the temperature according to the infrared radiation emitted by the cooking pot arranged above the corresponding burner and send the temperature data to the range hood. The range hood is configured to: receive the temperature data, and after the temperature data continuously exceeds the boiling threshold for a preset time, send a first signal to the cooking stove. The first signal is configured to enable the cooking stove to control the corresponding burner to reduce the firepower or control the corresponding burner to stop working. Since the infrared sensor has high sensitivity, compared with a temperature sensor that needs heat to conduct to the probe to detect the temperature, the infrared sensor can collect heat radiation faster, so the response speed is faster, and the temperature data transmitted in real time is also more frequent, which can more effectively prevent the phenomenon of overflowing the pot.

[0084] As a possible implementation, the range hood includes a first processor, and the first processor is connected to the infrared sensor assembly. When the cooking stove controls the corresponding burner to reduce the firepower and the temperature data received by the first processor is less than or equal to the first preset value, the first processor is configured to: send a second signal to the second processor. The second signal is configured to enable the cooking stove to control the corresponding burner to increase the firepower.

[0085] In several embodiments provided in the present application, it should be understood that the units described as separate components may or may not be physically separated, and the components shown as units may be one physical unit or multiple physical units, that is, they may be located in one place, or may be distributed to multiple different places. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0086] As described above, the above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A cooking appliance, characterized in that: include: A stove, wherein at least one stove head is arranged on the stove; A range hood is arranged above the stove and connected to the stove; The infrared sensor assembly includes at least one infrared sensor, which is arranged on a side of the range hood close to the stove head; The smoke machine is connected to the infrared sensor; The infrared sensor is configured to: detect temperature according to infrared radiation emitted by the cooking pot arranged above the corresponding stove, and send temperature data to the range hood; The range hood is configured to: receive the temperature data, and send a first signal to the stove after the temperature data continues to be greater than a preset boiling threshold for a period of time; The stove is configured to, upon receiving the first signal, control the corresponding stove head to reduce the fire power or control the corresponding stove head to stop working.

2. The cooker according to claim 1, characterized in that: The range hood includes a first processor, the stove includes a second processor, and the first processor is connected to the second processor; The first processor is connected to the infrared sensor component.

3. The cooker according to claim 2, characterized in that: In the case where the stove controls the corresponding stove to reduce the firepower, when the temperature data received by the first processor is less than or equal to the first preset value, the first processor is configured to: send a second signal to the second processor; The second processor is configured to control the corresponding stove to increase the fire power when receiving the second signal.

4. The cooker according to any one of claims 1 to 3, characterized in that: The stove top includes a stove head, the infrared sensor assembly includes an infrared sensor, and the range hood includes a first processor; The first end of the infrared sensor is electrically connected to the first voltage end, the second end of the infrared sensor is electrically connected to the first pin of the first processor, the third end of the infrared sensor is electrically connected to the second pin of the first processor, and the fourth end of the infrared sensor is electrically connected to the second voltage end.

5. The cooker according to any one of claims 1 to 3, characterized in that: The stove top includes a plurality of stove heads, and the range hood includes a first processor; The infrared sensor assembly includes a plurality of infrared sensors, the plurality of infrared sensors correspond to the positions of the plurality of stove heads one by one, and one of the infrared sensors is configured to detect the temperature data of the pot above the corresponding stove head; The first processor includes a plurality of detection pin groups, the plurality of detection pin groups are respectively connected to the plurality of infrared sensors, and each of the detection pin groups includes a first pin and a second pin; The first end of the infrared sensor is electrically connected to the first voltage end, the second end of the infrared sensor is electrically connected to the first pin of the detection pin group corresponding to the first processor, the third end of the infrared sensor is electrically connected to the second pin of the detection pin group corresponding to the first processor, and the fourth end of the infrared sensor is electrically connected to the second voltage end.

6. The cooker according to any one of claims 1 to 3, characterized in that: The range hood includes a first wireless module, a first processor and a first antenna, and the stove includes a second wireless module, a second processor and a second antenna; The input end of the first wireless module is electrically connected to the first processor, the output end of the first wireless module is electrically connected to the first antenna, the input end of the second wireless module is electrically connected to the second processor, and the output end of the second wireless module is electrically connected to the second antenna; The stove and the range hood are communicatively connected via the first wireless module and the second wireless module.

7. The cooker according to claim 6, characterized in that: The first wireless module includes: a first inductor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a first resistor, a second resistor and a third resistor; The first electrode of the first capacitor is electrically connected to the third pin of the first processor, and the second electrode of the first capacitor is electrically connected to the fourth pin of the first processor; the first end of the first inductor is electrically connected to the third pin of the first processor, the second end of the first inductor is electrically connected to the first electrode of the second capacitor, and the second electrode of the second capacitor is electrically connected to the fourth pin of the first processor; the first electrode of the third capacitor is electrically connected to the second end of the first inductor, the second electrode of the third capacitor is electrically connected to the first end of the first resistor, the second end of the first resistor is electrically connected to the first electrode of the fourth capacitor, and the second electrode of the fourth capacitor is electrically connected to the second voltage terminal; The first end of the second resistor is electrically connected to the second end of the first resistor, the second end of the second resistor is electrically connected to the first pole of the fifth capacitor, the second pole of the fifth capacitor is electrically connected to the second voltage end, the first end of the third resistor is electrically connected to the second end of the second resistor, and the second end of the third resistor is electrically connected to the first antenna.

8. The cooker according to any one of claims 1 to 3, characterized in that: A lens is arranged on the infrared sensor.

9. A range hood, characterized in that: The range hood is arranged above the stove, and the stove is provided with at least one stove head; The range hood includes an infrared sensor assembly, which includes at least one infrared sensor connected to the range hood and arranged on a side of the range hood close to the stove head; The infrared sensor is configured to: detect temperature according to infrared radiation emitted by the cooking pot arranged above the corresponding stove, and send temperature data to the range hood; The range hood is configured to: receive the temperature data, and after the temperature data continues to be greater than a preset boiling threshold for a period of time, send a first signal to the stove; the first signal is configured to cause the stove to control the corresponding stove to reduce firepower or control the corresponding stove to stop working.

10. The range hood according to claim 9, characterized in that: The range hood comprises a first processor and a second processor, wherein the first processor is connected to the infrared sensor assembly; the first processor is connected to the second processor; In the case where the stove controls the corresponding stove to reduce the firepower, when the temperature data received by the first processor is less than or equal to the first preset value, the first processor is configured to: send a second signal to the second processor; The second signal is configured to enable the stove to control the corresponding stove to increase the fire power.

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