Cooking equipment

Abstract

The utility model discloses cooking equipment, relates to the technical field of household appliances, and aims to solve the problems that a large amount of heat is radiated in the air and is lost in the air and a large amount of heat is wasted in the process that a steam generator in the related technology generates water vapor. The cooking equipment comprises a box body and a steam generator, the steam generator comprises a steam generator main body and a heater, a heat supply channel is formed in the steam generator main body, the heater is connected with the steam generator main body so that the steam generator main body can heat the steam supply channel, water in the steam supply channel can be converted into water vapor, and the steam generator main body is connected with the heater. And the gas supply channel is arranged around the periphery of the heater. Thus, in the process that part of heat generated by the heater is radiated to the surrounding, the air supply channel arranged around the heater can be further heated, and therefore heat loss caused by the fact that the heat is radiated to the air is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a cooking device. Background Art

[0002] A cooking device is a kitchen device used for cooking food. In some cooking processes, steam is used to heat food, or steam is used to keep food moist during the process of heating food by air, so as to achieve the purpose of cooking food.

[0003] In the related art, a cooking device has a box body and a steam generator. The box body has a cooking cavity. The steam generator is used to convert water into water vapor and input the water vapor into the cooking cavity. Among them, the steam generator includes a vaporizing member and a heating member. The vaporizing member communicates with a water source and the cooking cavity. The heating member is arranged around the circumference of the vaporizing member, and the heating member is used to heat the vaporizing member so that the water in the vaporizing member is vaporized into water vapor and enters the cooking cavity to cook food.

[0004] However, in the related art, the heating efficiency of the heating member for the vaporizing member is low, resulting in high energy consumption of the cooking device. Summary of the Utility Model

[0005] An embodiment of the utility model provides a cooking device, which is used to solve the problem of high energy consumption of the cooking device in the related art.

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

[0007] In a first aspect, a cooking device is provided. The cooking device includes a box body and a steam generator. A cooking cavity is formed inside the box body. The steam generator is used to convert water into water vapor and input the water vapor into the cooking cavity. The steam generator includes a steam generator main body and a heater. The steam generator main body is provided with a water inlet and an air outlet. A gas supply channel is formed between the water inlet and the air outlet. The air outlet is communicated with the cooking cavity. The water inlet is used to connect to a water source. The heater is connected to the steam generator main body to heat the gas supply channel through the steam generator main body, so that the water in the gas supply channel is converted into water vapor. The gas supply channel is arranged around the circumference of the heater.

[0008] Among them, the gas supply channel is arranged around the circumference of the heater. In this way, during the process of heating the gas supply channel by the heater, some of the heat generated by the heater can further heat the gas supply channel arranged around the heater during the process of radiating to the surrounding, thereby reducing the heat loss caused by the heat radiating into the air. In this case, the heat radiated by the heater to the surrounding can be reused, thereby reducing the energy consumption of the cooking device.

[0009] In some embodiments, the air supply channel is spirally wound around the periphery of the heater.

[0010] In some embodiments, the steam generator body includes a housing and a coil pipe. An accommodation cavity is formed inside the housing. An inlet and an outlet are provided on the housing, and the inlet and the outlet communicate with the accommodation cavity. The coil pipe passes through the inlet and the outlet, and the part located in the accommodation cavity is arranged around the periphery of the heater. The coil pipe has an air supply channel, and the water inlet and the air outlet are located on the coil pipe.

[0011] In some embodiments, the heater includes a plurality of heating elements, and the plurality of heating elements are connected in parallel so that each heating element can independently heat the air supply channel.

[0012] In some embodiments, the plurality of heating elements include a first heating element and a second heating element, and the heating power of the second heating element is greater than that of the first heating element.

[0013] In some embodiments, each heating element has a first end and a second end. The heater further includes a first wiring terminal and a plurality of second wiring terminals. The first wiring terminal is connected to the first end of each heating element. Each second wiring terminal corresponds to a heating element, and the second wiring terminal is connected to the corresponding heating element.

[0014] In some embodiments, the steam generator further includes a plurality of temperature limiters, and each temperature limiter corresponds to a heating element. The temperature limiter is configured to disconnect the corresponding heating element from the power supply when the temperature of the air supply channel heated by the corresponding heating element reaches a first preset temperature.

[0015] In some embodiments, the steam generator further includes a temperature sensor and a controller. The temperature sensor is used to detect the temperature at the water inlet and / or the temperature at the air outlet. The controller is electrically connected to the temperature sensor and the plurality of heating elements, and the controller is configured to control the operation of one or more heating elements according to the temperature detected by the temperature sensor.

[0016] In some embodiments, the steam generator further includes a fuse, and the fuse is connected in series with the heater. The fuse is arranged on the housing and is located on the periphery of the housing. The fuse is configured to disconnect the heater from the power supply when the temperature of the housing reaches a second preset temperature.

[0017] In a second aspect, a cooking device includes a cabinet and a steam generator. A cooking cavity is formed inside the cabinet. The steam generator is configured to convert water into water vapor and input the water vapor into the cooking cavity. The steam generator includes a steam generator body and a heater. The steam generator body is provided with a water inlet and an air outlet. A gas supply channel is formed between the water inlet and the air outlet. The air outlet is in communication with the cooking cavity. The water inlet is used to connect to a water source. The heater is configured to heat the gas supply channel so that the water in the gas supply channel is converted into water vapor. The gas supply channel is disposed around the periphery of the heater.

[0018] The beneficial effects of the cooking device provided in the above second aspect are the same as those of the cooking device provided in the above first aspect, and will not be elaborated here. Description of the Drawings

[0019] Figure 1 One of the structural schematic diagrams of the cooking device provided by an embodiment of the present application;

[0020] Figure 2 Two of the structural schematic diagrams of the cooking device provided by an embodiment of the present application;

[0021] Figure 3 One of the structural schematic diagrams of the steam generator provided by an embodiment of the present application;

[0022] Figure 4 Two of the structural schematic diagrams of the steam generator provided by an embodiment of the present application;

[0023] Figure 5 One of the structural schematic diagrams of the gas supply channel provided by an embodiment of the present application;

[0024] Figure 6 Two of the structural schematic diagrams of the gas supply channel provided by an embodiment of the present application;

[0025] Figure 7 Three of the structural schematic diagrams of the gas supply channel provided by an embodiment of the present application;

[0026] Figure 8 One of the structural schematic diagrams of the steam generator body provided by an embodiment of the present application;

[0027] Figure 9 Two of the structural schematic diagrams of the steam generator body provided by an embodiment of the present application;

[0028] Figure 10 One of the structural schematic diagrams of the heater provided by an embodiment of the present application;

[0029] Figure 11 Two of the structural schematic diagrams of the heater provided by an embodiment of the present application;

[0030] Figure 12 The third structural schematic diagram of the steam generator provided by the embodiment of the present application;

[0031] Figure 13 The fourth structural schematic diagram of the steam generator provided by the embodiment of the present application;

[0032] Figure 14 The fifth structural schematic diagram of the steam generator provided by the embodiment of the present application.

[0033] Reference numerals: 1 - box body; 11 - cooking cavity; 12 - equipment cavity; 2 - steam generator; 21 - steam generator main body; 211 - housing; 2111 - accommodation cavity; 2112 - inlet; 2113 - outlet; 212 - coil; 2121 - water inlet; 2122 - air outlet; 2123 - air supply channel; 22 - heater; 221 - first heating element; 222 - second heating element; 223 - first terminal; 224 - second terminal; 23 - thermostat; 24 - temperature sensor; 25 - fuse; 26 - mounting member; 3 - water tank. 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 relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are 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 thus should not be construed as limiting the present utility model.

[0036] The terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0037] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. 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 circumstances. In addition, when describing pipelines or channels, the terms "connected" and "coupled" used in this application have the meaning of conducting. The specific meaning needs to be understood in combination with the context.

[0038] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present 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] As used herein, "about", "substantially", or "approximate" includes the stated value and the average value within an acceptable deviation range of the specific value, where the acceptable deviation range is determined by those of ordinary skill in the art considering the measurement being discussed and the errors associated with the measurement of the specific quantity (i.e., the limitations of the measurement system).

[0040] With the development of technology and the improvement of people's living quality, people's requirements for the electrification of cooking equipment are gradually increasing. To meet people's needs for cooking equipment, cooking equipment is developing towards electrification and automation.

[0041] In the process of food production, it is often necessary to heat-treat the food, and steaming and baking are common treatment methods, thus generating electrified cooking equipment such as steam ovens, ovens, and steam-convection ovens that combine steaming and baking.

[0042] The steaming treatment method is a cooking method that uses steam to heat food. The steam generator in the cooking equipment can generate a large amount of steam, so that the food is evenly heated and cooked thoroughly in a high-temperature and high-humidity environment.

[0043] The baking treatment method is a cooking method that heats and bakes food by placing the food in an oven and using hot air. In some baking processes, steam is generated by a steam generator, which can keep the food moist during the baking process and make the food more tender.

[0044] The steam generator mainly includes a heating element and a vaporizing element. The vaporizing element is connected to the water source and the cooking cavity, and the vaporizing element provides space for water vaporization. After water enters the vaporizing element, it absorbs heat in the vaporizing element and turns into water vapor, and then the water vapor is discharged into the cooking cavity.

[0045] In the related art, the heating element is arranged outside the vaporizing element and is spaced from the vaporizing element. The heating element provides heat for the water in the vaporizing element to change from liquid to gas. The heating element is energized to generate heat, and the heat is radiated into the air. Since the vaporizing element is spaced from the heating element, the vaporizing element absorbs the heat radiated into the air by the heating element, thereby providing heat for the water.

[0046] When the heat generated by the heating element is radiated to the vaporizing element, a part of the heat is radiated into the air and cannot be utilized, resulting in heat loss and energy waste.

[0047] Therefore, the present application provides a cooking device.

[0048] This cooking device can be a steam box, an oven, or a steam oven with integrated steaming and baking functions. Hereinafter, taking the steam oven as an example, it will be further described.

[0049] As Figure 1 shown, the cooking device provided by the present application includes a cabinet 1. The appearance of the cabinet 1 can be in the shape of a cube. The cabinet 1 is used to protect the internal devices and the items placed inside the cooking device, so as to prevent the internal devices and the items stored inside the cabinet 1 from being damaged.

[0050] It should be noted that the internal devices can include a baking tray, an air duct, a blower, a water tank, the steam generator 2 described below, a control panel, etc.

[0051] At the same time, the cabinet 1 has a certain heat insulation effect, which can reduce the radiation of internal heat to the surroundings, thereby increasing the proportion of heat applied to heating items and reducing heat loss.

[0052] As Figure 2 shown, a cooking cavity 11 is formed inside the cabinet 1 provided by the present application. The cooking cavity 11 is used to place items to be heated, and the items to be heated can be food.

[0053] In addition to the cooking cavity 11, the cabinet 1 also has a device cavity 12 inside. The device cavity 12 is used to provide a placement space for some internal devices.

[0054] As Figure 3 shown, the cooking device provided by the present application further includes a steam generator 2. The steam generator 2 is used to convert water into water vapor and input the water vapor into the cooking cavity 11 (see Figure 2 ).

[0055] Combined with Figure 2 and Figure 3, Exemplarily, the steam generator 2 is disposed inside the cabinet 1 and in the equipment cavity 12. Separating the steam generator 2 from the cooking cavity 11 can reduce the impact of the high temperature in the cooking cavity 11 on the steam generator 2.

[0056] Exemplarily, the steam generator 2 is disposed outside the cabinet 1. It can be understood that a steam generator 2 is externally connected to the cooking device.

[0057] Combined with Figure 2 and Figure 3 , the cooking device provided in the present application further includes a water tank 3. The water tank 3 is connected to the steam generator 2 and is used to supply water to the steam generator 2.

[0058] Exemplarily, the water tank 3 is disposed in the equipment cavity 12. The water tank 3 can be slidably connected to the cabinet 1, which is convenient for taking out the water tank 3 from the cooking device to add water, or the water tank 3 is provided with a tank opening so that the user can add water into the water tank 3 through the tank opening.

[0059] In some embodiments, the steam generator 2 is communicated with a water source by connecting to an external water source.

[0060] The cooking device provided in the present application further includes a water pump (the water pump is not shown in the figure). The water pump is used to send water into the steam generator 2 to ensure that water continuously enters the steam generator 2 during use and prevent the steam generator 2 from dry burning.

[0061] Continuing to refer to Figure 3 , specifically, the steam generator 2 includes a steam generator main body 21.

[0062] The steam generator main body 21 is made of a good heat-conducting material, for example, it can be made of materials such as aluminum alloy and copper.

[0063] The steam generator main body 21 is provided with a water inlet 2121 and a steam outlet 2122. The water inlet 2121 is connected to a water source or the water tank 3 (see Figure 2 ), and is used to introduce water into the steam generator 2. The steam outlet 2122 is connected to the cooking cavity 11 (see Figure 2 ), and is used to discharge the water vapor generated in the steam generator 2 into the cooking cavity 11.

[0064] As Figure 4 shown, a gas supply channel 2123 is formed between the water inlet 2121 and the steam outlet 2122, and the gas supply channel 2123 provides space for the liquid water to vaporize into water vapor.

[0065] Continuing to refer to Figure 4 , the steam generator 2 further includes a heater 22. The heater 22 is connected to the steam generator main body 21 to heat the gas supply channel 2123 (see Figure 4)Heat it up so that the water in the air supply channel 2123 is converted into water vapor.

[0066] The air supply channel 2123 is formed in the steam generator main body 21, and the steam generator main body 21 is connected to the heater 22. The heat generated by the heater 22 is transferred to the steam generator main body 21, and the air supply channel 2123, which is part of the steam generator main body 21, absorbs the heat, thereby achieving heat transfer.

[0067] The air supply channel 2123 is arranged around the periphery of the heater 22.

[0068] The air supply channel 2123 is formed inside the steam generator main body 21 and at the same time surrounds the periphery of the heater 22. It can be approximately understood that the steam generator 2 is successively composed of the heater 22, the steam generator main body 21, the air supply channel 2123, and the steam generator main body 21 from the inside out. In this case, a part of the heater 22 is located inside the steam generator main body 21.

[0069] When the heater 22 releases heat, the heat radiates into the space around the heater 22. In the above-described setting, the heat radiates to the steam generator main body 21, and the steam generator main body 21 transfers the heat to the air supply channel 2123 through its good heat conduction performance for steam generation.

[0070] It should be noted that the heater 22 needs to be electrically connected to the outside world. The steam generator main body 21 has good heat conduction performance, and heat will affect the stability of the electrical connection. Setting all the heating elements inside the steam generator main body 21 will affect the stability of the electrical connection, thus posing a safety hazard. Therefore, a part of the heater 22 is set inside the steam generator main body 21. It can also be understood that a part of the heater 22 refers to most of the heat generated by the heater 22.

[0071] Thus, the air supply channel 2123 is arranged around the periphery of the heater 22. The heat generated by the heater 22 radiates to the surroundings, and the air supply channel 2123 is arranged around the periphery of the heater 22, which can reduce the heat radiation into the air. At the same time, the heat generated by the heater 22 acts on the air supply channel 2123 through the steam generator main body 21, which can further reduce the heat radiation into the air.

[0072] Therefore, heat radiation in the air can be reduced, heat waste can be reduced, the heat utilization rate can be improved, and thus the energy consumption of the cooking device can be reduced.

[0073] As Figure 5 shown, in some embodiments, the air supply channel 2123 is spirally wound around the periphery of the heater 22 (see Figure 4 ). In the figure, the air supply channel 2123 is inside the pipe and is blocked, so it is not shown.

[0074] The air supply channel 2123 is spirally wound around the periphery of the heater 22, which can increase the contact area between the air supply channel 2123 and the steam generator main body 21 (see Figure 4 ), thereby improving the efficiency of heat radiation to the air supply channel 2123 and completely vaporizing water into water vapor in the air supply channel 2123.

[0075] Combined with Figure 6 and Figure 7 , in some embodiments, the air supply channel 2123 is a conversion cavity that can hold water. The conversion cavity is connected to a water source through a water inlet 2121, and the conversion cavity is connected to the cooking cavity 11 through an air outlet 2122 (see Figure 2 ). The conversion cavity is arranged around the periphery of the heater 22.

[0076] The conversion cavity surrounds the periphery of the heater 22, which can increase the heat exchange efficiency between the conversion cavity and the heater 22. There is a part of water in the conversion cavity, which can reduce the probability of dry burning.

[0077] As Figure 8 shown, in some embodiments, the steam generator main body 21 includes a housing 211. An accommodation cavity 2111 is formed inside the housing 211, and an inlet 2112 and an outlet 2113 are provided on the housing 211. The inlet 2112 and the outlet 2113 communicate with the accommodation cavity 2111.

[0078] As Figure 9 shown, in some embodiments, the steam generator main body 21 includes a coil 212. The coil 212 passes through the inlet 2112 and the outlet 2113 ( Figure 9 the outlet 2113 is blocked in Figure 8 ), and the part located in the accommodation cavity 2111 is arranged around the periphery of the heater 22 (see Figure 4 ). Among them, the coil 212 has an air supply channel 2123, and the water inlet 2121 and the air outlet 2122 are located on the coil 212 (see Figure 5 ).

[0079] Combined with Figure 8 and Figure 9 , the accommodation cavity 2111 provides space for storing the coil 212. One end of the water inlet 2121 of the coil 212 passes through the inlet 2112 and extends out of the housing 211, and one end of the air outlet 2122 of the coil 212 passes through the outlet 2113 and extends out of the housing 211.

[0080] Exemplarily, the coil 212 is attached to the cavity wall of the accommodation cavity 2111. The coil 212 is connected to the heater 22 through an outer shell (see Figure 4 ).

[0081] Exemplarily, the heater 22, the coil 212 and the housing can be connected together by die-casting aluminum.

[0082] The heater 22 is used to heat the air supply passage 2123 so that the water in the air supply passage 2123 is converted into water vapor.

[0083] As Figure 10 shown, exemplarily, the heater 22 is a vertical structure.

[0084] As Figure 11 shown, exemplarily, the heater 22 is a U-shaped structure. It can be understood that without increasing the quantity, setting the heater 22 as a U-shaped structure can improve the heat supply efficiency of the heater 22.

[0085] Exemplarily, in this example without drawings, the heater 22 is of the coil 212 structure, and the heater 22 has multiple bends in the air supply passage 2123. It can be understood that such a setting can improve the heat supply efficiency.

[0086] When the cooking device is in use, it has a heating-up stage and a constant-temperature stage. When the cooking device is in the heating-up stage, the required amount of steam is relatively high. When the cooking device is in the constant-temperature stage, the required amount of steam is relatively less. The amount of steam generated by the steam generator 2 is mainly affected by the heater 22.

[0087] As Figure 10 and Figure 11 shown, in some embodiments, the heater 22 includes a plurality of heating elements.

[0088] The plurality of heating elements are arranged in parallel so that each heating element can independently heat the air supply passage 2123 (see Figure 4 ).

[0089] When in the heating-up stage, the plurality of heating elements can work simultaneously, the generated heat increases, so that the rate of water becoming water vapor increases to meet the demand for the amount of steam in the heating-up stage.

[0090] The amount of steam generated in the heating-up stage of the cooking device increases, thereby reducing the time for the temperature of the cooking cavity 11 (see Figure 2 ) to rise, and thus reducing the cooking time.

[0091] When in the constant-temperature stage and continuous large amounts of steam are not required, the number of working heating elements can be appropriately reduced, thereby reducing energy consumption.

[0092] In this way, the amount of water vapor generated is controlled by the number of heating elements.

[0093] In some embodiments, the plurality of heating elements include a first heating element 221 and a second heating element 222. The heating power of the second heating element 222 is greater than that of the first heating element 221.

[0094] When the first heating element 221 is used alone, the first heating element 221 generates heat.

[0095] When the second heating element 222 is used alone, the second heating element 222 generates heat.

[0096] When the first heating element 221 and the second heating element 222 are used together, the first heating element 221 and the second heating element 222 generate heat together.

[0097] In this way, the heat generated by the heating element is different, and the rate of generating water vapor by the steam generator 2 (see Figure 3 ) is also different. By different powers of the first heating element 221 and the second heating element 222, three different steam generation rates can be achieved by the two heating elements.

[0098] It should be noted that in the case where a water source needs to continuously supply water to the steam generator 2, the water supply amount of the water source matches the amount of water consumed by the heat generated by the heater 22. That is, under different heat generation efficiencies, the water fed into the steam generator 2 by the water source will be completely converted into water vapor in the steam generator 2.

[0099] In some embodiments, each heating element has a first end and a second end, which are used to connect the heating element to the circuit.

[0100] Continue to refer to Figure 10 and Figure 11 , in some embodiments, the heater 22 further includes a first terminal 223 and a plurality of second terminals 224. The first terminal 223 is connected to the first end of each heating element, each second terminal 224 corresponds to a heating element, and the second terminal 224 is connected to the corresponding heating element.

[0101] In Figure 10 and Figure 11 , the position indicated by A is the first end of the heating element, and the position indicated by B is the second end of the heating element.

[0102] As Figure 12 shown, in some embodiments, the steam generator 2 provided in the present application further includes a plurality of thermostats 23. Each thermostat 23 corresponds to a heating element, and the thermostat 23 is used to disconnect the corresponding heating element from the power supply when the temperature of the air supply channel 2123 (see Figure 4 ) heated by the corresponding heating element reaches a first preset temperature. Figure 12 The position C in

[0103] is the fixing position of the thermostat 23.

[0104] When the steam generator 2 is in an abnormal condition, the temperature limiter 23 may disconnect the connection between the expected corresponding heating element and the power supply. The abnormal condition includes an over-temperature phenomenon of the temperature limiter 23, and the over-temperature phenomenon is mostly caused by insufficient water in the air supply channel 2123, resulting in dry burning, thereby causing over-temperature.

[0105] Continue to participate Figure 12 , illustratively, the temperature limiter 23 is located outside the steam generator body 21. As a result, the temperature limiter 23 is far away from the heater 22, and most of the heat generated by the heater 22 is supplied to the air supply channel 2123 (see Figure 4 ) absorption, can reduce the temperature limiter 23 is affected by the heater 22. Ensure that the temperature limiter 23 can achieve the purpose of protecting the equipment by cutting off the connection between the heater 22 and the power supply. It can be understood that in Figure 12 In the embodiment, the air supply channel 2123 is blocked by the steam generator body 21.

[0106] Exemplarily, the temperature limiter 23 may be one of a thermocouple temperature limiter 23, a thermistor temperature limiter 23, a magnetic temperature limiter 23 and a thermal temperature limiter 23.

[0107] If Figure 13 As shown, in some embodiments, the steam generator 2 provided by the present application further includes a temperature sensor 24 and a controller. The temperature sensor 24 is used to detect the temperature at the water inlet 2121 and / or to detect the temperature at the air outlet 2122.

[0108] In some embodiments, the steam generator 2 provided in the present application further includes a controller. The controller is electrically connected to the temperature sensor 24 and a plurality of heating elements, and the controller is used to control the operation of one or more heating elements according to the temperature detected by the temperature sensor 24.

[0109] If Figure 13 As shown, for example, there is one temperature sensor 24, and the temperature sensor 24 is arranged near the water inlet 2121, for detecting the temperature at the water inlet 2121, and sending the temperature signal to the sensor. The temperature at the water inlet 2121 is affected by the temperature of the incoming water and the air supply channel 2123 (see Figure 4 ) is affected by temperature.

[0110] When the steam generator 2 needs to work, water is supplied to the steam generator 2, and the controller controls the heater 22 to work.

[0111] When the temperature sensor 24 detects that the temperature at the water inlet 2121 rises and is higher than the normal working temperature value, it is considered that the water supply is insufficient, and the controller controls the water pump to increase the water supply. Or it is considered that the heater 22 is overheated, and the controller controls the heater 22 to reduce the power or disconnect the heater 22 from the power supply. ​​

[0112] When the temperature sensor 24 detects that the temperature at the water inlet 2121 decreases and is lower than the normal operating temperature value, it is considered that the water supply is too large, and then the controller controls the water pump to reduce the water supply. Or if it is considered that the heating efficiency of the heater 22 is insufficient, the controller controls the heater 22 to increase the power.

[0113] As Figure 14 shown, exemplarily, one temperature sensor 24 is provided, and the temperature sensor 24 is arranged at a position close to the air outlet 2122 for detecting the temperature of the air outlet 2122 and sending the temperature signal to the controller. When the steam generator 2 operates, the temperature of the air outlet 2122 is affected by the temperature of the generated water vapor and the temperature of the air supply channel 2123.

[0114] When the temperature sensor 24 detects that the temperature at the air outlet 2122 increases and is higher than the normal operating temperature value, it is considered that the air supply channel 2123 and the water vapor are overheated by the heater 22, and then the controller controls the heater 22 to disconnect. Or if it is considered that the water supply is insufficient, the controller controls to increase the water supply.

[0115] When the temperature sensor 24 detects that the temperature at the air outlet 2122 decreases and is lower than the normal operating temperature value, it is considered that the heat received by the air supply channel 2123 and the water vapor is insufficient, and then the controller controls the heater 22 to increase the power. Or in this case, it is considered that the water supply is large, and then the controller controls the water pump to reduce the water supply.

[0116] See Figure 3 , exemplarily, two temperature sensors 24 are provided, one of which is arranged at a position close to the water inlet 2121 for detecting the temperature of the water inlet 2121, and the other temperature sensor 24 is arranged at a position close to the air outlet 2122 for detecting the temperature of the air outlet 2122.

[0117] The two temperature sensors 24 are used in cooperation. The water inlet volume or the power of the heater 22 can be adjusted better according to the temperature of the water inlet 2121 and the temperature of the air outlet 2122.

[0118] It should be noted that the water inlet volume in the steam generator 2 is matched with the heating power of the heater 22, that is, the water entering the steam generator 2 can be completely vaporized into water vapor under the action of the heater 22. When the water inlet volume increases, the heating power of the heater 22 increases correspondingly.

[0119] While the water inlet volume and the heating power are matched, the water inlet volume and the heating power can be adjusted within a small range, and this small range adjustment still enables the water entering the steam generator 2 to be completely vaporized into water vapor under the action of the heater 22.

[0120] Continue to refer to Figure 13 andFigure 14 In some embodiments, the steam generator 2 provided in the present application further includes a fuse 25. The fuse 25 is connected in series with the heater 22, and the fuse 25 is configured to disconnect the heater 22 from the power supply when the temperature of the housing 211 reaches a second preset temperature.

[0121] The fuse 25 and the heater 22 are connected in series. When a short - circuit fault occurs in the circuit, the fuse 25 disconnects first, that is, disconnects the connection between the heater 22 and the power supply, so that the heater 22 stops working, avoiding safety risks caused by the continuous operation of the heater 22.

[0122] The fuse 25 is disposed on the housing 211 and is located on the circumferential side of the housing 211. Thus, the fuse 25 is far from the heater 22, and most of the heat generated by the heater 22 is absorbed by the air supply channel 2123 (see Figure 4 ), which can reduce the influence of the heater 22 on the fuse 25.

[0123] The fuse 25 disposed on the housing 211 also has a protective function. When both the temperature sensor 24 and the temperature limiter 23 are damaged, the heater 22 continuously supplies heat, and the temperature of the housing 211 rises. Since the fuse 25 is disposed on the housing 211, the housing 211 transfers the temperature to the fuse 25, and the fuse 25 breaks, disconnecting the heater 22 from the power supply.

[0124] Continuing to refer to Figure 13 and Figure 14 , in some embodiments, the steam generator 2 provided in the present application further includes a mounting member 26.

[0125] The mounting member 26 is disposed outside the housing 211 and is used to protect against short - circuits in the circuit, and can discharge the current in the device to the ground through the mounting member 26.

[0126] At the same time, the steam generator 2 is mounted in the device cavity 12 (see Figure 2 ) through the mounting member 26.

[0127] Exemplarily, the mounting member 26 is mounted in a suitable position by means of screwing, clamping, welding, etc.

[0128] The cooking device provided in the present application further includes devices common to ovens, steamers, steam - ovens, such as an air duct, a fan for heat dissipation, a tray, etc. This part is publicly known in the art, so no further description will be given.

[0129] Although the present application has been described in connection with various embodiments, those skilled in the art will appreciate and realize other variations of the disclosed embodiments by viewing the drawings, the disclosure, and the appended claims during the implementation of the claimed application. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude a plurality. A single processor or other unit may implement several functions recited in the claims. Certain measures are recited in mutually different dependent claims, but this does not mean that these measures cannot be combined to achieve good results.

[0130] Although the present application has been described in connection with specific features and their embodiments, it is obvious that various modifications and combinations can be made without departing from the spirit and scope of the present application. Accordingly, the present specification and the drawings are merely exemplary illustrations of the present application as defined by the appended claims, and are considered to cover any and all modifications, variations, combinations, or equivalents within the scope of the present application. Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these changes and modifications.

[0131] The above are only the specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A cooking device, characterized in that: The cooking device comprises: A box body, wherein a cooking cavity is formed inside the box body; A steam generator, used for converting water into steam and inputting the steam into the cooking cavity; The steam generator comprises: A steam generator body, wherein a water inlet and an air outlet are provided on the steam generator body, an air supply channel is formed between the water inlet and the air outlet; the air outlet is communicated with the cooking cavity, and the water inlet is used to connect to a water source; a heater connected to the steam generator body to heat the air supply channel through the steam generator body so that water in the air supply channel is converted into water vapor; Wherein, the air supply channel is arranged around the circumference of the heater.

2. The cooking device according to claim 1, characterized in that: The air supply channel is spirally wound around the circumference of the heater.

3. The cooking device according to claim 1 or 2, characterized in that: The steam generator body comprises: A shell body, wherein a receiving cavity is formed inside, and an inlet and an outlet are provided on the shell body, and the inlet and the outlet are communicated with the receiving cavity; A coil, passing through the inlet and the outlet, and a portion of which is located in the accommodating cavity and is arranged around the circumference of the heater; Wherein, the coil has the air supply channel, and the water inlet and the air outlet are located on the coil.

4. The cooking device according to claim 1, characterized in that: The heater comprises: A plurality of heating elements are arranged in parallel so that each of the heating elements can heat the air supply channel independently.

5. The cooking device according to claim 4, characterized in that: The plurality of heating elements include: a first heating element; A second heating element, wherein the heating power of the second heating element is greater than the heating power of the first heating element.

6. The cooking device according to claim 4, characterized in that Each of the heating elements has a first end and a second end; the heater further comprises: a first terminal connected to the first end of each of the heating elements; A plurality of second connecting terminals, each of which corresponds to one of the heating elements, and the second connecting terminals are connected to the corresponding heating element.

7. The cooking device according to claim 4, characterized in that The steam generator also includes: A plurality of temperature limiters are provided, each of which corresponds to one of the heating elements, and the temperature limiter is used to disconnect the corresponding heating element from the power supply when the corresponding heating element heats the air supply passage to a first preset temperature.

8. The cooking device according to claim 4, characterized in that The steam generator also includes: A temperature sensor, used to detect the temperature at the water inlet; and / or used to detect the temperature at the air outlet; A controller is electrically connected to the temperature sensor and the plurality of heating elements, and is used for controlling the operation of one or more of the heating elements according to the temperature detected by the temperature sensor.

9. The cooking device according to claim 3, characterized in that: The steam generator also includes: A fuse is connected in series with the heater; the fuse is arranged on the shell and is located on the peripheral side of the shell; the fuse is used to disconnect the heater from the power supply when the temperature of the shell reaches a second preset temperature.

10. A cooking device, characterized in that: The cooking device comprises: A box body, wherein a cooking cavity is formed inside the box body; A steam generator, used for converting water into steam and inputting the steam into the cooking cavity; The steam generator comprises: A steam generator body, wherein a water inlet and an air outlet are provided on the steam generator body, an air supply channel is formed between the water inlet and the air outlet; the air outlet is communicated with the cooking cavity, and the water inlet is used to connect to a water source; A heater, used for heating the air supply channel to convert water in the air supply channel into water vapor; Wherein, the air supply channel is arranged around the circumference of the heater.

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