Steam generator and air fryer

Abstract

The utility model provides a steam generator and an air fryer, and relates to the technical field of cooking equipment. The steam generator comprises a heating bin which comprises a steam generating cavity and a water inlet; the heating element is connected with the heating bin; the heat conduction piece is connected with the heating bin and arranged in the heating bin; the switch assembly is connected with the water inlet; the triggering assembly is connected with the heat conduction part and can execute triggering action according to the temperature of the heat conduction part, and the triggering action is used for triggering the switch assembly to open the water inlet.

Description

Technical Field

[0001] The utility model relates to the technical field of cooking equipment, in particular to a steam generator and an air fryer. Background Art

[0002] In the related art, in order to avoid insufficient moisture content and dry taste of food, the air fryer can add water to the food by setting a steam generating device.

[0003] In the steam generating device, automatic water inlet and steam preparation need to be achieved through two sets of independently working electronic control mechanisms. However, the reliability of arranging two independent sets of electronic control mechanisms is poor, and problems such as dry burning of the steam generating device and food soaking in water may easily occur.

[0004] Therefore, how to overcome the above-mentioned technical defects has become a technical problem that needs to be solved urgently. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art.

[0006] To this end, a first aspect of the utility model provides a steam generator.

[0007] A second aspect of the utility model provides an air fryer.

[0008] In view of this, the first aspect of the utility model provides a steam generator, which includes: a heating chamber, including a steam generating chamber and a water inlet; a heating element connected to the heating chamber; a heat conducting element connected to the heating chamber and arranged in the heating chamber; a switch assembly connected to the water inlet; a trigger assembly connected to the heat conducting element, the trigger assembly can perform a trigger action according to the temperature of the heat conducting element, and the trigger action is used to trigger the switch assembly to open the water inlet.

[0009] The present application defines a steam generator, which is applied to an air fryer and can deliver high-temperature steam to the space where food is located during the cooking process, thereby heating and humidifying the food through the high-temperature steam, increasing the heating rate of the food and optimizing the taste of the food.

[0010] Specifically, the steam generator includes a heating chamber and a heating element. A steam generating chamber is formed in the heating chamber. A water inlet and a steam outlet connected to the steam generating chamber are provided on the heating chamber. The heating element is connected to the heating chamber. When powered on, the heating element generates heat, which is transferred to the heating chamber to heat up the heating chamber. The liquid flows into the steam generating chamber through the water inlet, and the high-temperature heating chamber heats the liquid in the steam generating chamber to a steam state. The high-temperature steam is then discharged from the steam generating chamber through the steam outlet to complete the preparation of high-temperature steam.

[0011] On this basis, a heat conducting component is also provided on the heating bin, and the heat conducting component is provided on the heating bin. Specifically, the heat conducting component can be formed on the heating bin through a die-casting process.

[0012] Specifically, the steam generator further includes a switch assembly and a trigger assembly. The switch assembly is connected to the water inlet of the heating chamber. The switch assembly can control the switch of the water inlet by switching its own state. When the water inlet is opened, liquid can flow into the heating chamber to start preparing steam. When the water inlet is closed, the liquid is blocked by the switch assembly and cannot flow into the heating chamber.

[0013] The trigger component is connected to the heat conductor. After the heating element is turned on, the heat can also be transferred to the trigger component through the heat conductor. In the process of the heat conductor gradually heating up, the trigger component can perform a trigger action according to the temperature of the heat conductor. The trigger action acts on the switch component. Specifically, the switch component can be switched from a closed state to an open state by contacting the switch component, thereby opening the water inlet of the heating chamber.

[0014] It can be seen that the linkage between the heating element and the switch element is realized through the trigger component and the switch component, so that after the heating element is turned on, the switch component can automatically open the water inlet of the steam generating chamber when the temperature of the steam generating chamber and the heating element reaches the standard, thereby realizing automatic water supply to the steam generating chamber. On the one hand, the water inlet can be kept closed when the temperature of the steam generating chamber does not reach the steam preparation temperature to prevent the liquid that has not been heated to the steam state from being directly poured into the cooking chamber. On the other hand, the water inlet can be opened in time when the temperature of the steam generating chamber reaches the steam preparation temperature to prevent the steam generating chamber from being dry burned and damaged. Thereby solving the problems of dry burning and soaking in water existing in the related technology, and at the same time, realizing the linkage between the heating element and the switch element through the trigger component can reduce the complexity of the electronic control of the air fryer, which is conducive to reducing the cost of the air fryer. Thereby achieving the technical effect of optimizing the structure of the air fryer, improving the safety and reliability of the air fryer, and reducing the production cost of the air fryer.

[0015] In addition, the air fryer provided by the utility model may also have the following additional technical features:

[0016] In the above technical solution, the heat conducting element and the heating chamber are an integrated structure; or, the heat conducting element is at least partially located outside the steam generating chamber.

[0017] In this technical solution, a heat conducting member is also provided on the heating bin, and the heat conducting member and at least a part of the area on the heating bin are an integrated structure, and the heat conducting member can be formed on the heating bin by a die-casting process. Alternatively, the heat conducting member is at least partially located outside the steam generating chamber, and after the heating bin is heated up, the heat is guided to an area away from the steam generating chamber through the heat conducting member, thereby realizing the linkage control function of the steam generator through the heat conducted by the heat conducting member.

[0018] It can be seen that by molding the heat-conducting part on the heating bin, the steps of separately processing and assembling the heat-conducting part are eliminated, which reduces the process complexity of the steam generator on the one hand, and reduces the assembly complexity of the steam generator on the other hand, thereby solving the technical problem of low production efficiency existing in the related art. At the same time, there is no structural section between the integrated heat-conducting part and the heating bin, and the structural stability of the two is relatively strong, and the possibility of the heat-conducting part loosening or even falling off is relatively low, thereby solving the technical problem of poor reliability and high failure rate of the split structure in the related art. This achieves the technical effect of optimizing the structure of the steam generator, improving the production efficiency of the steam generator, and improving the structural stability of the steam generator.

[0019] In any of the above technical solutions, the heating chamber includes: a box body, which is connected to the heat-conducting element and the heating element and includes an opening, and the heat-conducting element and the box body are an integrated structure; a cover body, which is connected to the box body and covers the opening, and the box body and the cover body enclose a steam generating chamber.

[0020] In this technical solution, the heating chamber includes a box body and a cover body, the top of the box body is open, and the cover body is closed at the opening, so that the steam generating chamber is enclosed by the box body and the cover body. The number of water inlets is one, and the water inlet is opened on the cover body or the box body. The number of steam outlets can be multiple, and the steam outlets are opened on the cover body and / or the box body.

[0021] On this basis, the heating element is arranged on the box body, and the turned-on heating element can transfer heat to the box body through contact. The heat-conducting element is integrally formed on the box body, and the heat generated by the heating element is transferred to the heat-conducting element through the box body, so that the heat-conducting element and the box body are heated synchronously, and the trigger component is connected to the heat-conducting element, so that the trigger component can execute the trigger action according to the temperature value of the box body.

[0022] Dividing the heating chamber into a box body and a cover body can reduce the mold opening cost and demoulding difficulty, thereby reducing the production cost of the steam generator. The heat-conducting component is integrally formed on the box body, so that heat can be directly transferred to the heat-conducting component through the box body, thereby shortening the heat transfer path and making the temperature of the heat-conducting component closer to the temperature of the steam generation chamber, thereby ensuring that the trigger component can turn on the switch component in time after the heating component is turned on, thereby reducing the possibility of dry burning of the heating chamber.

[0023] In any of the above technical solutions, the cover body includes a through hole, and the heat conductive member includes: a first section, which is arranged in the steam generating chamber and connected to the box body; and a second section, which is connected to the first section and the trigger assembly and passes through the through hole.

[0024] In this technical solution, the heat conducting member is divided into a first section and a second section according to the position. The first section is located in the steam generating chamber and connected to the inner wall of the steam generating chamber, and the second section is located outside the steam generating chamber and connected to the first section. The heat is conducted to the outside of the steam generating chamber via the first section and the second section, so that the trigger component outside the steam generating chamber can perform a trigger action according to the temperature value of the second section.

[0025] By arranging some heat-conducting parts on the inner side of the steam generating chamber, the temperature of the area contacted by the trigger component can be made closer to the actual temperature of the steam generating chamber, thereby ensuring that the switch component can open the water inlet in time after the heating element is turned on, thereby avoiding dry burning of the heating chamber.

[0026] On this basis, a through hole is provided on the cover. During the assembly of the cover, the through hole needs to be sleeved on the second section first, and then the cover is covered on the box along the second section. The through hole can cooperate with the second section to realize the positioning of the cover on the box, ensuring that the cover can be accurately covered at the predetermined position, reducing the possibility of steam leakage from the gap between the cover and the box.

[0027] Specifically, a sealing ring may be embedded between the second section and the through hole to further improve the sealing effect.

[0028] Specifically, the shapes and sizes of the first section and the second section may be consistent, or the first section and the second section may be distinguished by changing the shapes and sizes.

[0029] Specifically, the first section and the second section may be connected by a fixing structure, and the first section and the second section may be manufactured as an integral unit by an integral molding process.

[0030] In any of the above technical solutions, the heat conducting member is columnar, the diameter of the first section is larger than the diameter of the second section; and the cover body abuts against the end surface of the first section.

[0031] In this technical solution, the heat conductor is columnar, and the diameter of the first section is larger than the diameter of the second section, that is, a step surface is formed between the first section and the second section. After the through hole is sleeved on the second section, the cover body is pressed down along the second section until the cover body abuts against the end surface of the first section to complete the assembly. By setting the first section and the second section with different diameters, on the one hand, it is possible to provide a limit for the cover body during the installation of the cover body, thereby improving the assembly accuracy. On the other hand, the first section can provide support for the cover body to reduce the possibility of collapse or even cracking of the cover body. Thereby achieving the technical effect of improving the assembly accuracy and structural stability of the steam generator.

[0032] In any of the above technical solutions, the box body also includes an installation cavity, and the heating element is embedded in the installation cavity.

[0033] In this technical solution, the box body also forms an installation cavity through an integrated molding process, the shape of the installation cavity is adapted to the shape of the heating element, and the heating element can be assembled by embedding the heating element into the installation cavity.

[0034] For example, when an electric heating tube is selected as a heating element, a columnar installation cavity penetrating the box body is formed on the box body, and the electric heating tube is inserted into the installation cavity during the assembly process to complete the assembly, thereby achieving the technical effect of reducing the structural complexity and assembly difficulty of the steam generator.

[0035] In any of the above technical solutions, the steam generating chamber is located between the second section and the heating element.

[0036] In this technical solution, the second section passes through the outside of the steam generating chamber, and the steam generating chamber is between the second section and the heating element. After the heating element is turned on, the heating element transfers heat from bottom to top. Part of the heat acts on the liquid in the steam generating chamber to generate high-temperature steam, and the other part of the heat continues to be transferred to the second section above through the first section, so as to finally perform the trigger action by heating the trigger component.

[0037] In any of the above technical solutions, the heating element and the heat-conducting element are located on the side of the steam generating chamber away from the cover body; the heating element transfers heat to the heat-conducting element.

[0038] In this technical solution, the heat conductive element and the heating element are both arranged on the bottom wall of the box body. Part of the heat generated by the heating element diffuses upward to the steam generating chamber to generate high-temperature steam, and the other part of the heat diffuses to the heat conductive element in all directions, so as to increase the temperature of the heat conductive element to enable the trigger component to perform a trigger action.

[0039] By arranging the heating element and the heat conducting element on the same side of the steam generating chamber, the heat transfer path between the heating element and the heat conducting element can be reduced, so that the temperature of the heat conducting element is close to the actual temperature of the heating element, thereby improving the action accuracy of the trigger component.

[0040] The second aspect of the utility model provides an air fryer, which includes: a steam generator as in any of the above technical solutions, a liquid storage component connected to a switch component, including a liquid storage chamber; the switch component includes an on state and a off state, in which the switch component connects the liquid storage chamber and the water inlet in the on state, and in which the switch component blocks the liquid storage chamber and the water inlet in the off state; wherein the trigger action is used to switch the switch component to the on state.

[0041] In this technical solution, an air fryer provided with a steam generator in any of the above technical solutions is proposed, so the air fryer has the advantages of the steam generator in any of the above technical solutions, and can achieve the technical effects that can be achieved by the steam generator in any of the above technical solutions. To avoid repetition, it is not repeated here. In this technical solution, the steam generator also includes a liquid storage component, which is connected to the switch component, and a liquid storage cavity for storing liquid is formed in the liquid storage component.

[0042] On this basis, the switch assembly has an on state and a off state. When the switch assembly is in the on state, the water inlet is opened, and the liquid in the liquid storage chamber can flow into the heating chamber through the switch assembly to start preparing steam. When the switch assembly is in the off state, the water inlet is closed, and the liquid is blocked in the switch assembly and cannot flow into the heating chamber.

[0043] The trigger component is connected to the heat conductor. After the heating element is turned on, the heat can also be transferred to the trigger component through the heat conductor. In the process of the heat conductor gradually heating up, the trigger component can perform a trigger action according to the temperature of the heat conductor. The trigger action acts on the switch component. Specifically, the switch component can be switched from a closed state to an open state by contacting the switch component, thereby opening the water inlet of the heating chamber.

[0044] It can be seen that by setting up a linked trigger component and switch component, the switch component can automatically open the water inlet of the heating chamber after the heating element is turned on, thereby realizing automatic water supply to the heating chamber and reducing the possibility of dry burning in the heating chamber, thereby achieving the technical effect of improving the automation level of the steam generator and improving the safety and reliability of the steam generating chamber.

[0045] In any of the above technical solutions, the switch assembly includes: a main body, including a flow channel, the flow channel connecting the inlet and the water inlet; a valve core, connected to the main body, the valve core includes a first position and a second position, when the valve core is in the first position, the valve core blocks the flow channel, and when the valve core is in the second position, the valve core opens the flow channel; wherein the trigger assembly drives the valve core to move to the second position through a triggering action.

[0046] The main body comprises: a valve seat; a valve cover arranged on the valve seat; a valve body arranged on the valve seat, a valve core is connected to the valve body, and the valve body and the valve cover enclose a flow channel.

[0047] In this technical solution, the switch assembly includes a valve core and a body, and the valve body includes a valve seat, a valve cover, and a valve body. The valve body is arranged on the valve seat, and the valve cover connected to the valve seat presses the valve body on the valve seat to prevent the valve body from loosening or misaligning between the valve cover and the valve seat. A flow channel is enclosed between the valve body and the valve cover, one end of the flow channel is connected to the inlet on the valve cover, and the other end of the flow channel is connected to the water inlet of the heating chamber.

[0048] On this basis, a valve core is provided on the valve body, and a avoidance hole is provided on the valve seat, and the valve core is exposed in the avoidance hole. Relative to the valve seat, the valve core has a first position and a second position. When the valve core is in the first position, the valve core blocks the inlet on the valve cover, and the liquid in the liquid storage cavity is blocked by the valve core and cannot enter the flow channel. When the valve core is in the second position, the valve core opens the inlet on the valve cover, and the liquid can enter the flow channel through the inlet and finally flow into the heating chamber.

[0049] After the electric heating tube is turned on, the heat conducting element heats up along with the electric heating tube. Under the action of the high-temperature heat conducting element, the trigger assembly performs a triggering action, which can push the valve core to the second position so that the inlet automatically opens after the heating tube is turned on, thereby realizing automatic water supply to the steam generator and avoiding dry burning in the heating chamber. This achieves the technical effect of improving the automation degree of the steam generator and improving the safety and reliability of the steam generator.

[0050] At the same time, compared with the technical solution of independently controlling the switch assembly according to the control instruction, the switch assembly that automatically operates according to the temperature of the heat conductor has stronger reliability, is not affected by circuit failure, and can further improve the safety and reliability of the steam generator.

[0051] In any of the above technical solutions, the switch assembly further includes: an elastic portion, connected to the valve body and the valve core, and used to drive the valve core to return to the first position.

[0052] In this technical solution, the switch assembly includes an elastic part, and the valve core is connected to the valve body through the elastic part. When the trigger assembly pushes the valve core to move through the triggering action, the elastic part is deformed and accumulates elastic potential energy. After the steam preparation is completed, the trigger assembly no longer applies the triggering action to the valve core, and the elastic part releases the elastic potential energy to reset the valve core to the first position, thereby realizing the automatic resetting of the valve core to prevent the liquid in the liquid storage cavity from pouring into the cooking cavity.

[0053] It can be seen that by providing the elastic part and the trigger assembly, the valve core can be automatically switched on and off along with the start and stop of the steam preparation process, thereby realizing fully automatic water supply and eliminating the need for complex electric control mechanisms and reset transmission mechanisms. This achieves the technical effect of optimizing the steam generator structure, improving the safety and reliability of the steam generator, and reducing the complexity of the steam generator structure.

[0054] In any of the above technical solutions, the valve core includes: a column, which is inserted into the inlet and connected to the elastic part; and a cover plate, which is connected to the end of the column and is located on the side of the inlet away from the valve body.

[0055] In this technical solution, the valve core includes a cylinder and a cover plate. The cylinder is inserted into the inlet, and the first end of the cylinder passes through the outside of the inlet. The cover plate is connected to the first end of the cylinder, and the second end of the cylinder is opposite to the avoidance hole on the valve seat, so that the trigger assembly can push the cylinder to the second position by contacting the second end of the cylinder.

[0056] Specifically, when the valve core is in the first position, the cover plate covers the outside of the inlet, and the pressure exerted by the liquid on the cover plate causes the cover plate to be pressed tightly against the inlet, thereby achieving sealing with the help of the pressure of the liquid, thereby achieving the technical effect of improving the sealing reliability of the valve core. After the heating tube is turned on, the trigger component pushes the column to lift the cover plate, and the liquid can then enter the flow channel through the gap between the column and the inlet.

[0057] In any of the above technical solutions, the trigger assembly includes: a driving member connected to the heat-conducting member, the driving member is at least partially formed of memory metal; a push rod connected to the driving member, and the deformed driving member pushes the valve core through the push rod.

[0058] In this technical solution, the trigger assembly includes a driver and a push rod. The driver is connected to the heat-conducting member, and at least part of the driver is formed of a memory metal, which has the property of changing shape with temperature. After the heating element is turned on, the heat is transferred to the driver through the heat-conducting member, and the driver changes shape during the heating process, thereby driving the push rod on the driver to perform the triggering action.

[0059] Specifically, when the temperature of the driving member is less than or equal to the first temperature threshold, the driving member is in the first state, the push rod is separated from the second end of the valve core, and the valve core is kept in the first position under the action of the elastic part, that is, the switch assembly is in the closed state. When the temperature of the driving member rises to the second temperature threshold, the driving member changes to the second state, and during this deformation process, the push rod contacts and pushes the second end of the valve core, so that the cover plate can be lifted up, thereby opening the inlet on the valve cover.

[0060] It can be seen that the driving member in this technical solution can adjust its shape according to the temperature of the heat-conducting member, so as to cooperate with the push rod, valve core, cover plate and elastic part to realize the automatic opening and closing of the inlet, ensuring that the inlet can automatically open after the heating element starts working and automatically close after the heating element stops working, ensuring that the supply of liquid can match the start and stop of the steam preparation process. At the same time, compared with the technical solution of driving the valve core through an electric control mechanism, the use of memory metal can reduce the structural complexity of the steam generator and reduce the cost of the steam generator.

[0061] In any of the above technical solutions, the driving member includes: an inner ring connected to the heat conductive member; a memory metal ring sleeved on the circumference of the inner ring and connected to the push rod, and the heated memory metal ring bends toward the direction of the valve core.

[0062] In this technical solution, the driving part includes an inner ring and a memory metal ring. The inner ring is made of non-memory metal material, that is, the shape of the inner ring does not change with the temperature. The inner ring is connected to the heat conductive part, and the inner ring can be fixed to the heat conductive part by screws. The inner ring made of non-metallic material can ensure the positioning stability of the driving part on the heat conductive part, and prevent the driving part from loosening or even falling off after frequent changes in shape.

[0063] The memory metal ring is sleeved around the inner ring, and the push rod is connected to the memory metal ring. After the heating element is turned on, the heated memory metal ring tilts toward the direction of the valve core, thereby driving the push rod to swing toward the direction of the valve core, and finally the valve core is pushed to the second position by the push rod to prevent the evaporator from burning dry. Correspondingly, after the heating element is turned off, the temperature of the memory metal ring drops, the memory metal ring returns to a flat state, the push rod connected to it moves away from the valve core, and the valve core automatically returns to the first position under the action of the elastic part and the liquid pressure to prevent liquid from directly pouring into the cooking chamber.

[0064] In any of the above technical solutions, the liquid storage component includes: a water tank, which is detachably connected to the valve cover and includes a drain outlet; a sealing valve, which is arranged at the drain outlet; when the water tank is connected to the valve cover, the sealing valve abuts against the valve cover and the sealing valve opens the drain outlet; when the sealing valve is separated from the valve cover, the sealing valve closes the drain outlet.

[0065] In this technical solution, the liquid storage assembly includes a water tank and a sealing valve. A liquid storage cavity is formed in the water tank. A drain port is provided at the bottom of the water tank, and the sealing valve is installed in the drain port. A mounting position is provided on the valve cover. When the water tank is assembled to the mounting position, the valve cover lifts the sealing valve to automatically open the drain port, and the liquid in the water tank can flow to the inlet. Conversely, after the water tank is removed from the valve cover, the sealing valve automatically returns to the closed position by a spring to block the drain port, thereby preventing the liquid in the water tank from leaking.

[0066] Additional aspects and advantages of the present invention will become apparent in the following description or will be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0068] Figure 1 A schematic structural diagram of a steam generator according to an embodiment of the utility model is shown;

[0069] Figure 2 A schematic structural diagram of a steam generator according to an embodiment of the utility model is shown;

[0070] Figure 3A schematic structural diagram of a steam generator according to an embodiment of the utility model is shown;

[0071] Figure 4 for Figure 3 A cross-sectional view of the steam generator in the illustrated embodiment along the AA direction;

[0072] Figure 5 A schematic structural diagram of a steam generator according to an embodiment of the utility model is shown;

[0073] Figure 6 for Figure 5 A cross-sectional view of the steam generator in the illustrated embodiment along the BB direction;

[0074] Figure 7 A schematic structural diagram of a steam generator according to an embodiment of the utility model is shown;

[0075] Figure 8 A schematic diagram of the structure of a trigger assembly according to an embodiment of the utility model is shown;

[0076] Fig. 9 A schematic structural diagram of a switch assembly according to an embodiment of the utility model is shown;

[0077] Fig.10 A schematic structural diagram of a switch assembly according to an embodiment of the utility model is shown;

[0078] Fig.11 A schematic structural diagram of a switch assembly according to an embodiment of the utility model is shown;

[0079] Fig.12 A schematic structural diagram of a steam generator according to an embodiment of the utility model is shown;

[0080] Fig.13 A schematic structural diagram of an air fryer according to an embodiment of the utility model is shown;

[0081] Fig.14 A schematic structural diagram of an air fryer according to an embodiment of the utility model is shown;

[0082] Fig.15 A schematic structural diagram of an air fryer according to an embodiment of the utility model is shown;

[0083] Fig.16 for Fig.15 A partial enlarged view of the air fryer in the illustrated embodiment at area C;

[0084] Fig.17 A schematic structural diagram of an air fryer according to an embodiment of the utility model is shown;

[0085] Fig.18 for Fig.17 A partial enlarged view of the air fryer in area D in the illustrated embodiment;

[0086] Fig.19 A system block diagram of an air fryer according to an embodiment of the utility model is shown;

[0087] Fig. 20 A circuit diagram of a control circuit according to an embodiment of the utility model is shown.

[0088] in, Figures 1 to 20 The corresponding relationship between the reference numerals and component names in the figure is:

[0089] 100 steam generator, 110 heating chamber, 1102 steam generating chamber, 1104 water inlet, 1106 steam outlet, 112 box body, 1122 opening, 1124 installation chamber, 114 cover body, 1142 through hole, 120 heating element, 130 heat conducting element, 132 first section, 134 second section, 140 switch assembly, 142 valve seat, 1422 avoidance hole, 144 valve cover, 1442 inlet, 146 valve body, 148 valve core, 1482 column, 1484 cover plate, 149 elastic part, 150 trigger assembly, 1 52 driving member, 1522 inner ring, 1524 memory metal ring, 154 push rod, 160 conduit, 170 liquid storage component, 1702 liquid storage chamber, 172 water tank, 1722 drain outlet, 174 sealing valve, 200 air fryer, 210 body, 2102 cooking chamber, 220 hot air component, 222 motor, 224 fan blade, 226 heating element, 230 container, 240 shell, 300 controller, 301 first switch, 302 fuse, 303 timer, 304 indicator light, 305 second switch, 310 thermostat. DETAILED DESCRIPTION

[0090] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0091] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0092] Refer to the following Figures 1 to 20 A steam generator and an air fryer according to some embodiments of the present invention are described.

[0093] like Figure 1 and Figure 2 As shown, one embodiment of the utility model proposes a steam generator 100, which includes: a heating chamber 110, including a steam generating chamber 1102 and a water inlet 1104; a heating element 120, connected to the heating chamber 110; a heat-conducting element 130, connected to the heating chamber 110 and arranged in the heating chamber 110; a switch assembly 140, connected to the water inlet 1104; a trigger assembly 150, connected to the heat-conducting element 130, the trigger assembly 150 can perform a trigger action according to the temperature of the heat-conducting element 130, and the trigger action is used to trigger the switch assembly 140 to open the water inlet 1104.

[0094] The present application defines a steam generator 100, which is applied to an air fryer 200 and can deliver high-temperature steam to the space where food is located during the cooking process, thereby heating and humidifying the food through the high-temperature steam, increasing the heating rate of the food and optimizing the taste of the food.

[0095] Specifically, the steam generator 100 includes a heating chamber 110 and a heating element 120. A steam generating chamber 1102 is formed in the heating chamber 110. A water inlet 1104 and a steam outlet 1106 communicating with the steam generating chamber 1102 are provided on the heating chamber 110. The heating element 120 is connected to the heating chamber 110. After power is turned on, the heating element 120 generates heat, which is transferred to the heating chamber 110 to heat up the heating chamber 110. The liquid flows into the steam generating chamber 1102 through the water inlet 1104, and the high-temperature heating chamber 110 heats the liquid in the steam generating chamber 1102 to a steam state. Thereafter, the high-temperature steam is discharged from the steam generating chamber 1102 through the steam outlet 1106 to complete the preparation of high-temperature steam.

[0096] On this basis, a heat conducting member 130 is further provided on the heating chamber 110 , and the heat conducting member 130 is provided on the heating chamber 110 . Specifically, the heat conducting member 130 can be formed on the heating chamber 110 through a die-casting process.

[0097] Specifically, the steam generator 100 further includes a switch assembly 140 and a trigger assembly 150. The switch assembly 140 is connected to the water inlet 1104 of the heating chamber 110. The switch assembly 140 can control the switch of the water inlet 1104 by switching its own state. When the water inlet 1104 is opened, liquid can flow into the heating chamber 110 to start preparing steam. When the water inlet 1104 is closed, the liquid is blocked by the switch assembly 140 and cannot flow into the heating chamber 110.

[0098] The trigger component 150 is connected to the heat conductor 130. After the heating element 120 is turned on, the heat can also be transferred to the trigger component 150 through the heat conductor 130. In the process of the heat conductor 130 gradually heating up, the trigger component 150 can perform a trigger action according to the temperature of the heat conductor 130. The trigger action acts on the switch component 140. Specifically, the switch component 140 can be switched from a closed state to an open state by contacting the switch component 140, thereby opening the water inlet 1104 of the heating chamber 110.

[0099] It can be seen that the trigger component 150 and the switch component 140 realize the linkage of the heating element 120 and the switch component, so that after the heating element 120 is turned on, the switch component 140 can automatically open the water inlet 1104 of the steam generating chamber 1102 when the temperature of the steam generating chamber 1102 and the heating element 120 reaches the standard, thereby realizing the automatic water supply of the steam generating chamber 1102. On the one hand, the water inlet 1104 can be kept closed when the temperature of the steam generating chamber 1102 does not reach the steam preparation temperature, so as to prevent the liquid that has not been heated to the steam state from being directly poured into the cooking chamber 2102. On the other hand, the water inlet 1104 can be opened in time when the temperature of the steam generating chamber 1102 reaches the standard steam preparation temperature, so as to prevent the steam generating chamber 1102 from being dry-burned and damaged. Thereby solving the problems of dry-burning and soaking in water existing in the related art, and realizing the linkage of the heating element 120 and the switch component through the trigger component 150 can reduce the complexity of the electric control of the air fryer 200, which is conducive to reducing the cost of the air fryer 200. This achieves the technical effect of optimizing the structure of the air fryer 200, improving the safety and reliability of the air fryer 200, and reducing the production cost of the air fryer 200.

[0100] In the above embodiment, the heat conducting member 130 and the heating chamber 110 are an integrated structure; or, the heat conducting member 130 is at least partially located outside the steam generating chamber 1102 .

[0101] In this embodiment, a heat conducting member 130 is further provided on the heating chamber 110, and the heat conducting member 130 and at least a part of the area on the heating chamber 110 are an integrated structure, and the heat conducting member 130 can be formed on the heating chamber 110 by a die-casting process. Alternatively, the heat conducting member 130 is at least partially located outside the steam generating chamber 1102, and after the heating chamber 110 is heated, the heat is guided to a region away from the steam generating chamber 1102 through the heat conducting member 130, so that the linkage control function of the steam generator 100 is realized through the heat guided by the heat conducting member 130.

[0102] It can be seen that by integrally forming the heat-conducting member 130 on the heating bin 110, the steps of separately processing the heat-conducting member 130 and assembling the heat-conducting member 130 are eliminated, which reduces the process complexity of the steam generator 100 on the one hand, and reduces the assembly complexity of the steam generator 100 on the other hand, thereby solving the technical problem of low production efficiency existing in the related art. At the same time, there is no structural section between the integrated heat-conducting member 130 and the heating bin 110, and the structural stability of the two is relatively strong, and the possibility of the heat-conducting member 130 becoming loose or even falling off is relatively low, thereby solving the technical problem of poor reliability and high failure rate of the split structure in the related art. In addition, the technical effect of optimizing the structure of the steam generator 100, improving the production efficiency of the steam generator 100, and improving the structural stability of the steam generator 100 is achieved.

[0103] in, Figure 5 and Figure 6 In the embodiment, the heat conducting member 130 is located outside the steam generating chamber 1102 .

[0104] like Figure 1 and Figure 2 As shown, in the above embodiment, the heating chamber 110 includes: a box body 112, which is connected to the heat-conducting element 130 and the heating element 120, and includes an opening 1122, and the heat-conducting element 130 and the box body 112 are an integrated structure; a cover body 114, which is connected to the box body 112 and covers the opening 1122, and the box body 112 and the cover body 114 enclose a steam generating chamber 1102.

[0105] In this embodiment, the heating chamber 110 includes a box body 112 and a cover body 114. The top of the box body 112 has an opening 1122, and the cover body 114 covers the opening 1122, so that a steam generating chamber 1102 is enclosed by the box body 112 and the cover body 114. There is one water inlet 1104, which is provided on the cover body 114 or the box body 112. There can be multiple steam outlets 1106, which are provided on the cover body 114 and / or the box body 112.

[0106] On this basis, the heating element 120 is arranged on the box body 112, and the turned-on heating element 120 can transfer heat to the box body 112 through contact. The heat-conducting element 130 is integrally formed on the box body 112, and the heat generated by the heating element 120 is transferred to the heat-conducting element 130 via the box body 112, so that the heat-conducting element 130 and the box body 112 are heated synchronously, and the triggering component 150 is connected to the heat-conducting element 130, so that the triggering component 150 can execute a triggering action according to the temperature value of the box body 112.

[0107] Dividing the heating chamber 110 into a box body 112 and a cover body 114 can reduce mold opening costs and demolding difficulties, thereby reducing the production cost of the steam generator 100. The heat conducting member 130 is integrally formed on the box body 112, so that heat can be directly transferred to the heat conducting member 130 through the box body 112, thereby shortening the heat transfer path and making the temperature of the heat conducting member 130 closer to the temperature of the steam generating chamber 1102, thereby ensuring that the trigger component 150 can promptly turn on the switch component 140 after the heating element 226 is turned on, thereby reducing the possibility of dry burning of the heating chamber 110.

[0108] like Figure 3 and Figure 4 As shown, in any of the above embodiments, the cover body 114 includes a through hole 1142, and the heat conductive member 130 includes: a first section 132, which is disposed in the steam generating chamber 1102 and connected to the box body 112; and a second section 134, which is connected to the first section 132 and the trigger assembly 150 and is passed through the through hole 1142.

[0109] In this embodiment, the heat conducting member 130 is divided into a first section 132 and a second section 134 according to the position. The first section 132 is located in the steam generating chamber 1102 and connected to the inner wall surface of the steam generating chamber 1102, and the second section 134 is located outside the steam generating chamber 1102 and connected to the first section 132. The heat is conducted to the outside of the steam generating chamber 1102 via the first section 132 and the second section 134, so that the trigger assembly 150 outside the steam generating chamber 1102 can perform a triggering action according to the temperature value of the second section 134.

[0110] By arranging part of the heat conductive element 130 inside the steam generating chamber 1102, the temperature of the area contacted by the trigger component 150 can be made closer to the actual temperature of the steam generating chamber 1102, thereby ensuring that the switch component 140 can open the water inlet 1104 in time after the heating element 120 is turned on, thereby avoiding dry burning of the heating chamber 110.

[0111] On this basis, a through hole 1142 is provided on the cover 114. In the process of assembling the cover 114, the through hole 1142 needs to be sleeved on the second section 134 first, and then the cover 114 is covered on the box body 112 along the second section 134. The through hole 1142 can cooperate with the second section 134 to realize the positioning of the cover 114 on the box body 112, ensuring that the cover 114 can be accurately covered at the predetermined position, reducing the possibility of steam leaking from the gap between the cover 114 and the box body 112.

[0112] Specifically, a sealing ring may be embedded between the second section 134 and the through hole 1142 to further improve the sealing effect.

[0113] Specifically, the first section 132 and the second section 134 may have the same shape and size, or the first section 132 and the second section may be distinguished by changing the shape and size.

[0114] Specifically, the first section 132 and the second section 134 may be connected by a fixed structure, and the integrated first section 132 and the second section 134 may also be manufactured by an integrated molding process.

[0115] like Figure 3 and Figure 4 As shown, in any of the above embodiments, the heat conducting member 130 is columnar, the diameter of the first section 132 is greater than the diameter of the second section 134 ; the cover 114 abuts against the end surface of the first section 132 .

[0116] In this embodiment, the heat conducting member 130 is columnar, and the diameter of the first section 132 is greater than the diameter of the second section 134, that is, a step surface is formed between the first section 132 and the second section 134. After the through hole 1142 is sleeved on the second section 134, the cover body 114 is pressed down along the second section 134 until the cover body 114 is abutted against the end surface of the first section 132 to complete the assembly. By setting the first section 132 and the second section 134 with different diameters, on the one hand, it is possible to provide a limit for the cover body 114 during the installation of the cover body 114, thereby improving the assembly accuracy. On the other hand, the first section 132 can provide support for the cover body 114 to reduce the possibility of collapse or even cracking of the cover body 114. Thereby achieving the technical effect of improving the assembly accuracy and structural stability of the steam generator 100.

[0117] In any of the above embodiments, the steam generating chamber 1102 is located between the second section 134 and the heating element 120 .

[0118] In this embodiment, the second section 134 passes through the outside of the steam generating chamber 1102, and the steam generating chamber 1102 is between the second section 134 and the heating element 120. After the heating element 120 is turned on, the heating element 120 transfers heat from bottom to top. Part of the heat acts on the liquid in the steam generating chamber 1102 to generate high-temperature steam, and the other part of the heat continues to be transferred to the second section 134 above through the first section 132, so as to finally perform the trigger action by heating the trigger component 150.

[0119] In any of the above embodiments, the heating element 120 and the heat-conducting element 130 are located on a side of the steam generating chamber 1102 away from the cover body 114 ; the heating element 120 transfers heat to the heat-conducting element 130 .

[0120] In this embodiment, the heat conductive element 130 and the heating element 120 are both arranged on the bottom wall of the box body 112. A part of the heat generated by the heating element 120 diffuses upward to the steam generating chamber 1102 to generate high-temperature steam, and another part of the heat diffuses to the heat conductive element 130 to increase the temperature of the heat conductive element 130 so that the trigger component 150 performs a trigger action.

[0121] By arranging the heating element 120 and the heat conductive element 130 on the same side of the steam generating chamber 1102 , the heat transfer path between the heating element 120 and the heat conductive element 130 can be reduced, so that the temperature of the heat conductive element 130 is close to the actual temperature of the heating element 120 , thereby improving the action accuracy of the trigger component 150 .

[0122] like Figure 4 and Figure 6 As shown, in any of the above embodiments, the box body 112 further includes a mounting cavity 1124 , and the heating element 120 is embedded in the mounting cavity 1124 .

[0123] In this embodiment, the box body 112 further forms an installation cavity 1124 through an integrated molding process. The shape of the installation cavity 1124 is adapted to the shape of the heating element 120 . The heating element 120 can be assembled by embedding the heating element 120 into the installation cavity 1124 .

[0124] For example, when an electric heating pipe is selected as the heating element 120, a columnar installation cavity 1124 penetrating the box body 112 is formed on the box body 112, and the electric heating pipe is inserted into the installation cavity 1124 during the assembly process to complete the assembly, thereby achieving the technical effect of reducing the structural complexity and assembly difficulty of the steam generator 100.

[0125] like Figure 1 and Figure 2 As shown, in any of the above embodiments, the heating chamber 110 further includes a steam outlet 1106 , and the steam generator 100 further includes: a conduit 160 connected to the steam outlet 1106 .

[0126] In this embodiment, the steam generator 100 further includes a conduit 160, a first end of which is connected to the steam outlet 1106 of the heating chamber 110, and a second end of the conduit 160 is used to guide the high-temperature steam to the target area. For example, when the steam generator 100 is applied to an air fryer, the second end of the conduit 160 extends to the top opening 1122 of the frying tub to ensure that the high-temperature steam can be poured into the frying tub and act on the food.

[0127] Specifically, the length and shape of the conduit 160 are adjusted according to the internal structural layout of the air fryer 200, and this embodiment does not impose a rigid limitation.

[0128] Specifically, in the extension direction of the conduit 160, the conduit 160 is divided into a third section and a fourth section, wherein the first end of the third section is connected to the steam outlet 1106 of the heating chamber 110, the second end of the third section is connected to the first end of the fourth section, the third section is a curved section for adjusting the flow direction of the high-temperature steam, and the fourth section is a straight section for conveying the high-temperature steam in the first direction.

[0129] After the steam generator 100 is assembled to the air fryer 200, the first direction coincides with the height direction of the air fryer 200, that is, the high-temperature steam flows from top to bottom to the cooking cavity 2102. On this basis, the steam generating cavity 1102 is arranged on the top of the heating element 120 to reduce the heat loss of the heating element 120 and improve the heating efficiency of the heating element 120 to the heating chamber 110.

[0130] like Fig.12 As shown, one embodiment of the present application provides an air fryer 200, and the air fryer 200 also includes: a steam generator liquid storage component 170 as in any of the above embodiments, connected to the switch component 140, including a liquid storage chamber 1702; the switch component 140 includes an on state and a off state, in the on state the switch component 140 connects the liquid storage chamber 1702 and the water inlet 1104, and in the off state the switch component 140 blocks the liquid storage chamber 1702 and the water inlet 1104; wherein, the trigger action is used to switch the switch component 140 to the on state.

[0131] In this embodiment, an air fryer 200 provided with the steam generator 100 in any of the above embodiments is proposed, so the air fryer 200 has the advantages of the steam generator 100 in any of the above embodiments, and can achieve the technical effects that can be achieved by the steam generator 100 in any of the above embodiments. To avoid repetition, it is not repeated here. In this embodiment, the steam generator 100 also includes a liquid storage component 170, which is connected to the switch component 140, and a liquid storage cavity 1702 for storing liquid is formed in the liquid storage component 170.

[0132] On this basis, the switch assembly 140 has an on state and a off state. When the switch assembly 140 is in the on state, the water inlet 1104 is open, and the liquid in the liquid storage chamber 1702 can flow into the heating chamber 110 through the switch assembly 140 to start preparing steam. When the switch assembly 140 is in the off state, the water inlet 1104 is closed, and the liquid is blocked in the switch assembly 140 and cannot flow into the heating chamber 110.

[0133] The trigger component 150 is connected to the heat conductor 130. After the heating element 120 is turned on, the heat can also be transferred to the trigger component 150 through the heat conductor 130. In the process of the heat conductor 130 gradually heating up, the trigger component 150 can perform a trigger action according to the temperature of the heat conductor 130. The trigger action acts on the switch component 140. Specifically, the switch component 140 can be switched from a closed state to an open state by contacting the switch component 140, thereby opening the water inlet 1104 of the heating chamber 110.

[0134] It can be seen that by setting up the linked trigger component 150 and the switch component 140, after the heating element 120 is turned on, the switch component 140 can automatically open the water inlet 1104 of the heating chamber 110, thereby realizing automatic water supply to the heating chamber 110, reducing the possibility of dry burning of the heating chamber 110, and further achieving the technical effect of improving the automation degree of the steam generator 100 and improving the safety and reliability of the steam generating chamber 1102.

[0135] like Figure 7 , Fig.10 and Fig.11 As shown, in any of the above embodiments, the switch assembly 140 includes: a main body, including a flow channel, the flow channel is connected to the water inlet 1104; a valve core 148, connected to the main body, the valve core 148 includes a first position and a second position, when the valve core 148 is in the first position, the valve core 148 blocks the flow channel, and when the valve core 148 is in the second position, the valve core 148 opens the flow channel; wherein the trigger assembly 150 drives the valve core 148 to move to the second position through a triggering action.

[0136] The main body includes: a valve seat 142; a valve cover 144, which is arranged on the valve seat 142; a valve body 146, which is arranged on the valve seat 142, a valve core 148 is connected to the valve body 146, and the valve body 146 and the valve cover 144 enclose a flow channel.

[0137] in, Fig.15 and Fig.16 The middle valve core 148 is located in the first position, and the arrow shows the flow direction of the liquid.

[0138] Fig.17 and Fig.18 In the figure, the valve core 148 is located in the second position, and the arrows show the liquid flow direction and the heat transfer direction.

[0139] In this embodiment, the switch assembly 140 includes a valve seat 142, a valve cover 144, a valve body 146 and a valve core 148. The valve body 146 is arranged on the valve seat 142, and the valve cover 144 connected to the valve seat 142 presses the valve body 146 on the valve seat 142 to prevent the valve body 146 from loosening or misaligning between the valve cover 144 and the valve seat 142. A flow channel is enclosed between the valve body 146 and the valve cover 144, one end of the flow channel is communicated with the inlet 1442 on the valve cover 144, and the other end of the flow channel is communicated with the water inlet 1104 of the heating chamber 110.

[0140] On this basis, a valve core 148 is provided on the valve body 146, and a avoidance hole 1422 is provided on the valve seat 142, and the valve core 148 is exposed in the avoidance hole 1422. Relative to the valve seat 142, the valve core 148 has a first position and a second position. When the valve core 148 is in the first position, the valve core 148 blocks the inlet 1442 on the valve cover 144, and the liquid in the liquid storage chamber 1702 is blocked by the valve core 148 and cannot enter the flow channel. When the valve core 148 is in the second position, the valve core 148 opens the inlet 1442 on the valve cover 144, and the liquid can enter the flow channel through the inlet 1442 and finally flow into the heating chamber 110.

[0141] After the electric heating pipe is turned on, the heat conducting member 130 heats up along with the electric heating pipe, and under the action of the high-temperature heat conducting member 130, the triggering assembly 150 performs a triggering action, which can push the valve core 148 to the second position, so that the inlet 1442 is automatically opened after the heating pipe is turned on, thereby realizing automatic water supply of the steam generator 100 and avoiding the problem of dry burning in the heating chamber 110. Thus, the technical effect of improving the automation degree of the steam generator 100 and improving the safety and reliability of the steam generator 100 is achieved.

[0142] At the same time, compared with the embodiment of independently controlling the switch assembly 140 according to the control instruction, the switch assembly 140 that automatically operates through the temperature of the heat conductor 130 has stronger reliability and is not affected by circuit failures, which can further improve the safety and reliability of the steam generator 100.

[0143] like Fig. 9 and Fig.10 As shown, in any of the above embodiments, the switch assembly 140 further includes: an elastic portion 149 connected to the valve body 146 and the valve core 148, and used to drive the valve core 148 to return to the first position.

[0144] In this embodiment, the switch assembly 140 includes an elastic portion 149, and the valve core 148 is connected to the valve body 146 via the elastic portion 149. When the trigger assembly 150 pushes the valve core 148 to move through the triggering action, the elastic portion 149 is deformed and accumulates elastic potential energy. After the steam preparation is completed, the trigger assembly 150 no longer applies the triggering action to the valve core 148, and the elastic portion 149 releases the elastic potential energy to reset the valve core 148 to the first position, thereby realizing the automatic reset of the valve core 148 to prevent the liquid in the liquid storage cavity 1702 from pouring into the cooking cavity 2102.

[0145] It can be seen that by providing the elastic part 149 and the trigger assembly 150, the valve core 148 can be automatically switched on and off along with the start and stop of the steam preparation process, thereby realizing fully automatic water supply and eliminating the need for complex electric control mechanisms and reset transmission mechanisms. This achieves the technical effect of optimizing the structure of the steam generator 100, improving the safety and reliability of the steam generator 100, and reducing the complexity of the structure of the steam generator 100.

[0146] like Fig.10 and Fig.11 As shown, in any of the above embodiments, the valve core 148 includes: a column 1482, which passes through the inlet 1442 and is connected to the elastic portion 149; and a cover plate 1484, which is connected to the end of the column 1482 and is located on the side of the inlet 1442 away from the valve body 146.

[0147] In this embodiment, the valve core 148 includes a column 1482 and a cover plate 1484. The column 1482 is inserted into the inlet 1442. The first end of the column 1482 passes through the outside of the inlet 1442. The cover plate 1484 is connected to the first end of the column 1482. The second end of the column 1482 is opposite to the avoidance hole 1422 on the valve seat 142, so that the trigger assembly 150 can push the column 1482 to the second position by contacting the second end of the column 1482.

[0148] Specifically, when the valve core 148 is in the first position, the cover plate 1484 covers the outside of the inlet 1442, and the pressure exerted by the liquid on the cover plate 1484 causes the cover plate 1484 to be pressed tightly against the inlet 1442, thereby achieving a seal with the help of the pressure of the liquid, thereby achieving a technical effect of improving the sealing reliability of the valve core 148. After the heating tube is turned on, the trigger component 150 pushes the column 1482 to lift the cover plate 1484, and the liquid can then enter the flow channel through the gap between the column 1482 and the inlet 1442.

[0149] like Figure 7 and Figure 8As shown, in any of the above embodiments, the trigger assembly 150 includes: a driving member 152 connected to the heat-conducting member 130, and the driving member 152 is at least partially formed of memory metal; a push rod 154, connected to the driving member 152, and the deformed driving member 152 pushes the valve core 148 through the push rod 154.

[0150] In this embodiment, the trigger assembly 150 includes a driving member 152 and a push rod 154. The driving member 152 is connected to the heat conducting member 130, and at least a portion of the driving member 152 is formed by a memory metal, which has the property of changing shape with temperature. After the heating element 120 is turned on, the heat is transferred to the driving member 152 via the heat conducting member 130. The driving member 152 changes shape to the cover plate 1484 during the heating process, thereby driving the push rod 154 on the driving member 152 to perform the triggering action.

[0151] Specifically, when the temperature of the driving member 152 is less than or equal to the first temperature threshold, the driving member 152 is in the first state, and the push rod 154 is separated from the second end of the valve core 148. At this time, the valve core 148 is kept in the first position under the action of the elastic part 149, that is, the switch assembly 140 is in the closed state. When the temperature of the driving member 152 rises to the second temperature threshold, the driving member 152 changes to the second state. During this deformation process, the push rod 154 contacts and pushes the second end of the valve core 148, so that the cover plate 1484 can be lifted up, thereby opening the inlet 1442 on the valve cover 144.

[0152] It can be seen that the driving member 152 in this embodiment can adjust its shape according to the temperature of the heat-conducting member 130, so as to cooperate with the push rod 154, the valve core 148, the cover plate 1484 and the elastic part 149 to realize the automatic opening and closing of the inlet 1442, ensuring that the inlet 1442 can be automatically opened after the heating element 120 starts working, and automatically closed after the heating element 120 stops working, so as to ensure that the supply of liquid can match the start and stop of the steam preparation process. At the same time, compared with the embodiment in which the valve core 148 is driven by the electric control mechanism, the use of memory metal can reduce the structural complexity of the steam generator 100 and reduce the cost of the steam generator 100.

[0153] like Figure 7 and Figure 8 As shown, in any of the above embodiments, the driving member 152 includes: an inner ring 1522 connected to the heat conductive member 130; a memory metal ring 1524, sleeved on the circumference of the inner ring 1522 and connected to the push rod 154, and the heated memory metal ring 1524 is bent toward the direction of the valve core 148.

[0154] In this embodiment, the driving member 152 includes an inner ring 1522 and a memory metal ring 1524. The inner ring 1522 is made of non-memory metal material, that is, the shape of the inner ring 1522 does not change with the temperature. The inner ring 1522 is connected to the heat conductor 130, and the inner ring 1522 can be fixed to the heat conductor 130 by screws. Selecting the inner ring 1522 made of non-metallic material can ensure the positioning stability of the driving member 152 on the heat conductor 130, and prevent the driving member 152 from loosening or even falling off after frequent changes in shape.

[0155] The memory metal ring 1524 is sleeved around the inner ring 1522, and the push rod 154 is connected to the memory metal ring 1524. After the heating element 120 is turned on, the heated memory metal ring 1524 tilts toward the direction of the valve core 148, thereby driving the push rod 154 to swing toward the direction of the valve core 148, and finally the valve core 148 is pushed to the second position by the push rod 154 to prevent the evaporator from burning dry. Correspondingly, after the heating element 120 is turned off, the temperature of the memory metal ring 1524 drops, the memory metal ring 1524 returns to a flat state, and the push rod 154 connected thereto moves away from the valve core 148. The valve core 148 automatically resets to the first position under the action of the elastic part 149 and the liquid pressure to prevent the liquid from directly pouring into the cooking chamber 2102.

[0156] like Fig.15 and Fig.16 As shown, in any of the above embodiments, the liquid storage assembly 170 includes: a water tank 172, which is detachably connected to the valve cover 144 and includes a drain port 1722; a sealing valve 174, which is arranged at the drain port 1722; when the water tank 172 is connected to the valve cover 144, the sealing valve 174 abuts against the valve cover 144, and the sealing valve 174 opens the drain port 1722; when the sealing valve 174 is separated from the valve cover 144, the sealing valve 174 closes the drain port 1722.

[0157] In this embodiment, the liquid storage assembly 170 includes a water tank 172 and a sealing valve 174. A liquid storage chamber 1702 is formed in the water tank 172. A drain port 1722 is provided at the bottom of the water tank 172. The sealing valve 174 is installed in the drain port 1722. A mounting position is provided on the valve cover 144. When the water tank 172 is assembled to the mounting position, the valve cover 144 lifts the sealing valve 174 to automatically open the drain port 1722, and the liquid in the water tank 172 can flow to the inlet 1442. Conversely, after the water tank 172 is removed from the valve cover 144, the sealing valve 174 is automatically reset to the closed position by a spring to block the drain port 1722, thereby preventing the liquid in the water tank 172 from leaking.

[0158] like Fig.13 and Fig.14As shown, the air fryer 200 includes: a body 210 including a cooking cavity 2102 ; a steam generator 100 as in any of the above embodiments is disposed in the body 210 , and the steam generating cavity 1102 is connected to the cooking cavity 2102 .

[0159] The air fryer 200 further includes a body 210, which is a column 1482 frame structure of the air fryer 200, and is used to position and support other structures on the air fryer 200. The steam generator 100 is installed on the body 210. A cooking cavity 2102 is formed in the air fryer 200, and the steam outlet 1106 of the evaporation tube is connected to the cooking cavity 2102 through the conduit 160, so that high-temperature steam can be transported to the cooking cavity 2102, thereby heating and humidifying food through high-temperature steam, thereby increasing the heating rate of food, softening food, and avoiding the problem of surface cracking and woody taste of food.

[0160] like Fig.19 As shown, in any of the above embodiments, the air fryer 200 also includes: a hot air component 220, which is disposed on the body 210 and is used to blow high-temperature airflow to the cooking cavity 2102.

[0161] In this embodiment, the air fryer 200 further includes a hot air component 220, which is disposed on the body 210 and is disposed opposite to the cooking cavity 2102. The turned-on hot air component 220 can blow high-temperature airflow to the cooking cavity 2102 to quickly heat the surface of the food through the high-temperature airflow.

[0162] like Fig.19 As shown, in any of the above embodiments, the hot air assembly 220 includes: a motor 222 disposed on the body 210; a fan blade 224 connected to the motor 222; and a heating element 226 disposed on the body 210 for heating the fan blade 224.

[0163] In this embodiment, the hot air assembly 220 includes a motor 222, a fan blade 224 and a heating element 226. The motor 222 is fixed to the machine body 210. The fan blade 224 is connected to the rotating shaft on the motor 222. After the motor 222 is turned on, the fan blade 224 rotates along with the rotating shaft to form an airflow to the cooking cavity 2102. The heating element 226 is arranged around the fan blade 224. The turned-on heating element 226 can heat the fan blade 224 to blow out a high-temperature airflow through the high-temperature fan blade 224.

[0164] like Fig.13 and Fig.14 As shown, in any of the above embodiments, the body 210 includes an opening 1122 communicating with the cooking cavity 2102 , and the air fryer 200 further includes: a container 230 embedded in the opening 1122 ; and a housing covering the outside of the body 210 .

[0165] In this embodiment, the machine body 210 is further formed with an opening 1122 communicating with the cooking cavity 2102, and the container 230 is retractably disposed in the opening 1122, so that the user can store and take out food. During the cooking process, the user can pull out the container 230 and turn over or stir the food to ensure that the entire surface of the food can be heated by the hot air and high-temperature steam.

[0166] The housing 240 is disposed outside the machine body 210, and the housing 240 can protect other structures such as the steam generator 100 and the hot air assembly 220. At the same time, the housing 240 can shield the heating element 120 to prevent the user from being burned by accidentally triggering the heating element 120.

[0167] Specifically, the air fryer 200 is: an air fryer, an electric rice cooker, or a steam-bake combination machine.

[0168] Fig.19 The system block diagram of the air fryer 200 is shown. During operation, the heated heating chamber 110 can transfer heat to the trigger component 150 and the switch component 140 through the heat conductor 130. The trigger component 150 switches the switch component 140 to an on state through a triggering action. The water in the liquid storage component 170 can enter the heating chamber 110 through the switch component 140 under the action of gravity, and is discharged into the cooking cavity 2102 after being heated into high-temperature steam by the heating chamber 110.

[0169] The controller 300 includes a control circuit, and the control circuit is used to control the operation of the steam generator 100 and the hot air assembly 220 .

[0170] Specifically, Fig. 20 As shown, in the control circuit, the steam generator 100 is connected in parallel with the motor 222 and the heating element 226 in the hot air assembly 220, and then connected in series with the timer 303, the fuse 302 and the first switch 301 as a whole. A second switch 305 connected in series with the steam generator 100 can be set for the user to choose whether to turn on the steam generator 100. A thermostat 310 connected in series with the heating element 226 can also be set to prevent the heating element 226 from being overheated and damaged.

[0171] The control circuit also includes an indicator light 304 connected in parallel with the motor 222 .

[0172] By setting the control circuit, the steam generator 100 can be turned on only after the motor 222 starts working, thereby ensuring that the steam generated by the steam generator 100 can be taken away in time by the airflow generated by the fan after entering the cooking pot, ensuring that the steam will not affect the operation of the motor 222.

[0173] It should be clarified that in the claims, specification and drawings of the present invention, the term "multiple" refers to two or more than two. Unless otherwise clearly defined, the orientation or position relationship indicated by the terms "upper" and "lower" is based on the orientation or position relationship shown in the drawings, which is only for the purpose of more conveniently describing the present invention and making the description process easier, rather than indicating or implying that the device or element referred to must have the specific orientation described, be constructed and operated in a specific orientation, so these descriptions cannot be understood as limitations on the present invention; the terms "connect", "install", "fix" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection between multiple objects, or a detachable connection between multiple objects, or an integral connection; it can be a direct connection between multiple objects, or an indirect connection between multiple objects through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood based on the specific circumstances of the above data.

[0174] In the claims, specification and drawings of the present invention, the description of the terms "one embodiment", "some embodiments", "specific embodiments" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In the claims, specification and drawings of the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0175] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A steam generator, characterized in that: include: A heating chamber, including a steam generating chamber and a water inlet; A heating element connected to the heating chamber; A heat conducting member connected to the heating chamber and arranged in the heating chamber; A switch assembly connected to the water inlet; A trigger component is connected to the heat-conducting member, and the trigger component can perform a trigger action according to the temperature of the heat-conducting member, and the trigger action is used to trigger the switch component to open the water inlet.

2. The steam generator according to claim 1, characterized in that: The heat conducting member and the heating chamber are an integrated structure; or, The heat conducting member is at least partially located outside the steam generating chamber.

3. The steam generator according to claim 1, characterized in that: The heating chamber comprises: A box body connected to the heat-conducting element and the heat-generating element and comprising an opening, wherein the heat-conducting element and the box body are an integrated structure; The cover body is connected to the box body and covers the opening, and the box body and the cover body enclose the steam generating chamber.

4. The steam generator according to claim 3, characterized in that: The cover body includes a through hole, and the heat conducting member includes: The first section is disposed in the steam generating chamber and connected to the box body; The second section is connected to the first section and the trigger component and is penetrated through the through hole.

5. The steam generator according to claim 4, characterized in that: The heat conducting member is columnar, and the diameter of the first section is greater than the diameter of the second section; The cover body abuts against an end surface of the first section.

6. The steam generator according to claim 3, characterized in that: The box body also includes an installation cavity, and the heat generating element is embedded in the installation cavity.

7. The steam generator according to claim 4, characterized in that: The steam generating chamber is located between the second section and the heating element.

8. The steam generator according to claim 3, characterized in that: The heating element and the heat conducting element are located on a side of the steam generating chamber away from the cover body; The heat generating element transfers heat to the heat conducting element.

9. An air fryer, characterized in that: include: A steam generator as claimed in any one of claims 1 to 8; A liquid storage component, connected to the switch component, comprising a liquid storage chamber; The switch assembly includes an on state and a off state. In the on state, the switch assembly connects the liquid storage chamber and the water inlet, and in the off state, the switch assembly blocks the liquid storage chamber and the water inlet. Wherein, the triggering action is used to switch the switch component to the on state.

10. The air fryer according to claim 9, characterized in that: The switch assembly comprises: A body, comprising a flow channel, wherein the flow channel is connected to the water inlet; A valve core is connected to the body, the valve core includes a first position and a second position, when the valve core is in the first position, the valve core blocks the flow channel, and when the valve core is in the second position, the valve core opens the flow channel; Wherein, the trigger component drives the valve core to move to the second position through the trigger action.

11. The air fryer according to claim 10, characterized in that: The body comprises: Valve seat; A valve cover, disposed on the valve seat; The valve body is arranged on the valve seat, the valve core is connected to the valve body, and the valve body and the valve cover enclose the flow channel.

12. The air fryer according to claim 11, characterized in that: The switch assembly further comprises: The elastic part is connected to the valve body and the valve core, and is used to drive the valve core to return to the first position.

13. The air fryer according to claim 10, characterized in that: The trigger component comprises: A driving member connected to the heat conducting member, wherein the driving member is at least partially formed of a memory metal; A push rod is connected to the driving member, and the deformed driving member pushes the valve core through the push rod.

14. The air fryer according to claim 13, characterized in that: The driving member comprises: An inner ring connected to the heat conducting member; The memory metal ring is sleeved on the circumference of the inner ring and connected to the push rod. The heated memory metal ring bends toward the direction where the valve core is located.

15. The air fryer according to claim 11, characterized in that: The liquid storage component comprises: a water tank, detachably connected to the valve cover, comprising a water outlet; A sealing valve, arranged at the drain port; When the water tank is connected to the valve cover, the sealing valve abuts against the valve cover and the sealing valve opens the drain port. When the sealing valve is separated from the valve cover, the sealing valve closes the drain port.

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