Frying and baking machine

Abstract

The utility model relates to a frying and baking machine which comprises a base assembly, an upper cover assembly and a water tank assembly, the upper cover assembly can cover the base assembly, the base assembly comprises a lower baking tray, the lower baking tray is provided with a cooking groove and a water groove, the water tank assembly is installed on the base assembly or the upper cover assembly, the water tank assembly comprises a box body and a pipeline, and the box body can be communicated with the water groove through the pipeline. A switch valve is arranged on the pipeline, the switch valve comprises a valve body and a valve element rotatably arranged in the valve body, and the switch valve controls the pipeline to be opened and closed through rotation of the valve element. According to the frying and baking machine, the water tank does not need to be filled with water before cooking, only the water needs to be added into the box body, only the valve element needs to be rotated to control opening and closing of the switch valve in the cooking process, then the box body can be controlled to add the water into the water tank or stop adding the water, steam can be rapidly generated, and the upper cover assembly does not need to be opened; therefore, the problem that the cooking effect is affected due to steam escape and rapid temperature reduction caused by uncovering and water adding is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of cooking appliances, and in particular to a frying and grilling machine. Background Art

[0002] A grilling machine, also known as an electric griddle, consists of a base assembly and a top cover assembly. The top cover assembly can rotate relative to the base assembly, allowing the grilling machine to cook with the lid closed or open. When cooking with the lid closed, the continuous high-temperature heating can easily dry out the food, affecting its taste. To address this, some grilling machines have emerged on the market that can generate steam to rehydrate food. These mainly fall into two categories. One type incorporates an independent steam generator in the top cover assembly, which generates steam that flows into the cooking chamber, thus rehydrating the food at all times. However, these grilling machines are often complex in structure and expensive. The other type incorporates a water tank in the lower baking tray. When the lower baking tray is heated, the water in the tank evaporates, generating steam to rehydrate the food. However, this type of grilling machine requires sufficient water to be added to the sink before cooking, and the lid cannot be opened to add water during cooking (opening the lid to add water during cooking will cause steam to escape and the temperature to drop rapidly, affecting the cooking effect). On the one hand, all the water in the sink needs to be heated to boiling before steam can be generated, and the steam generation time is long; on the other hand, when the water in the sink is dried up, steam can no longer be generated, which is very inconvenient to use. Utility Model Content

[0003] Based on this, it is necessary to provide a grilling machine that can quickly generate steam and can add water during the cooking process.

[0004] A grilling machine includes a base assembly, an upper cover assembly, and a water tank assembly. The upper cover assembly can cover the base assembly. The base assembly includes a lower grilling tray, which is provided with a cooking trough and a water tank. The water tank assembly is installed on the base assembly or the upper cover assembly. The water tank assembly includes a box body and a pipeline. The box body can be connected to the water tank through the pipeline. The pipeline is provided with an on-off valve. The on-off valve includes a valve body and a valve core rotatably provided in the valve body. The on-off valve controls the on-off of the pipeline by rotating the valve core.

[0005] The grilling machine provided by this application does not require a full sink before cooking. Water can simply be added to the housing. When the sink requires water, the valve core is rotated to open the on-off valve, connecting the pipe between the housing and the sink, allowing the water in the housing to flow into the sink. When the required amount of water has been added, the valve core is rotated to close the on-off valve, disconnecting the housing and the sink, thereby stopping the addition of water. Furthermore, the on-off valve can be used to control the amount of water flowing into the sink. During use, only a small amount of water can be added to the sink, allowing steam to be quickly generated when the sink is heated. Furthermore, during cooking, the housing can be controlled by simply opening and closing the on-off valve to control the addition or stop of water from the sink. There is no need to open the upper cover assembly, thus avoiding the problem of steam escaping and rapid temperature drop caused by opening the cover to add water, which affects the cooking effect. Furthermore, the opening and closing of the on-off valve is controlled by rotating the valve core, making it simple to operate and convenient to use.

[0006] In one embodiment, the valve body is provided with a valve cavity and a water inlet and a water outlet connected to the valve cavity, the pipeline includes a first tube connected to the water inlet and a second tube connected to the water outlet, the first tube is connected to the box body, and the second tube is connected to the water tank, the valve core is rotatably arranged in the valve cavity, the valve core is provided with a flow channel, and the valve core has a closed position and an open position. When the valve core is in the closed position, the valve core blocks the water inlet and / or the water outlet; when the valve core is in the open position, the flow channel connects the water inlet and the water outlet.

[0007] In this way, the on-off of the water inlet and the water outlet can be controlled by rotating the valve core, thereby controlling the on-off of the water flow in the pipeline. The switch valve structure is very simple and easy to control.

[0008] In one embodiment, the flow passage is provided on the outer wall of the valve core and extends along the circumference of the valve core.

[0009] In this way, the flow channel has a simple structure and is easy to process. When the valve core is rotated, it is easier to control the size of the flow channel connecting the water inlet and the water outlet, thereby facilitating the control of the water flow rate.

[0010] In one embodiment, the cross-sectional area of ​​the flow channel increases from one end to the other end of the flow channel.

[0011] Thus, when the valve core of the on-off valve is rotated from the closed position to the open position, the water flow increases. Rotating the valve core in the opposite direction can reduce the water flow, and finally switch to the closed position. This arrangement of the present embodiment makes it easier to control the water flow rate and avoids a sudden increase in water flow when the valve core is switched from the closed position to the open position, which could cause water to splash directly onto the food.

[0012] In one embodiment, the flow channel includes a variable section and a constant section connected in sequence, and the cross-sectional area of ​​the variable section gradually increases from the end of the variable section away from the constant section to the end close to the constant section. The cross-sectional area of ​​the constant section remains unchanged along the circumference of the valve core, and the cross-sectional area of ​​the constant section is larger than the cross-sectional area of ​​the end of the variable section close to the constant section.

[0013] In this way, when the valve core is rotated from the closed position to the open position, the water flow gradually increases, and finally the water flow can be maintained at a constant state, thus ensuring the stability of the water flow when it is large in flow.

[0014] In one embodiment, the cross-sectional area of ​​the flow channel gradually increases from one end of the flow channel to the other end; or, the cross-sectional area of ​​the flow channel increases in a step-like manner from one end of the flow channel to the other end.

[0015] In this way, when the switch valve is opened, the water flow also changes from small to large, which is easy to control.

[0016] In one embodiment, the upper cover assembly includes an upper shell and an upper baking tray, the water tank assembly and the switch valve are both installed between the upper shell and the upper baking tray, and the knob is at least partially exposed from the upper shell.

[0017] In this way, when the upper cover assembly is closed over the base assembly, the housing is positioned above the lower grill plate, allowing water in the housing to flow to the water tank in the lower grill plate by gravity. This eliminates the need for a water pump or other water supply mechanism, resulting in a simpler structure. The knob is at least partially exposed from the upper housing, making it easier for the user to turn the knob.

[0018] In one embodiment, a positioning structure is provided between the upper shell and the knob, and the positioning structure includes a lock buckle and a lock slot. One of the lock buckle and the lock slot is provided on the upper shell, and the other is provided on the knob. Rotating the knob can lock the lock buckle into the lock slot or disengage from the lock slot. When the lock buckle is locked into the lock slot, the knob is restricted from rotating. The lock slot includes a first lock slot and a second lock slot. When the lock buckle is locked in the first lock slot, the valve core is in the closed position; when the lock buckle is locked in the second lock slot, the valve core is in the open position.

[0019] In this way, by providing a positioning structure, the knob can be locked in a preset position, thereby preventing the knob position from being changed due to accidental touch, thereby preventing the open and close state of the switch valve from being changed.

[0020] In one embodiment, the positioning structure further includes an elastic member, which is provided at an end of the lock buckle away from the lock slot, and the elastic member applies a force to the lock buckle to move toward the lock slot.

[0021] In this way, the elastic force of the elastic member makes it easy for the lock buckle to lock in the lock slot, and the lock buckle can also easily escape from the lock slot when the knob is turned, thereby improving the turning operation feel of the knob and providing a better user experience.

[0022] In one embodiment, the lock slot is provided on the upper shell, the knob is provided with a mounting slot, the lock buckle and the elastic member are both installed in the mounting slot, and the elastic member is supported by the lock buckle and the bottom wall of the mounting slot.

[0023] Thus, the installation slot provides installation space for the lock buckle and the elastic member, making it difficult for the elastic member and the lock buckle to fall out. The lock slot is provided on the upper shell, and the lock buckle and the elastic member are provided in the installation slot of the knob, and the structure is very simple.

[0024] In one embodiment, the second locking groove is set to three, namely the first groove, the second groove and the third groove, and the first groove, the second groove and the third groove are arranged in sequence. When the lock is locked in the first groove, the minimum flow area of ​​the flow channel is smaller than the minimum flow area of ​​the flow channel when the lock is locked in the second groove, and the minimum flow area of ​​the flow channel when the lock is locked in the second groove is smaller than the minimum flow area of ​​the flow channel when the lock is locked in the third groove.

[0025] In this way, when the lock is locked in the first slot, the second slot or the third slot, the flow channel has different water flow rates, so that the knob can be locked in three different flow positions, making it convenient for users to select different flow rates according to their needs.

[0026] In one embodiment, the box body has a water inlet, and at least the water inlet is exposed from the upper shell.

[0027] In this way, at least the water filling port is exposed on the upper shell, making it convenient for the user to add water into the box through the water filling port.

[0028] In one embodiment, the upper baking tray has a water inlet, and the end of the second tube away from the valve body is connected to the water inlet. When the upper cover assembly is covered on the base assembly, the orthographic projection of the water inlet on the base assembly falls into the water sink.

[0029] In this way, when the upper cover assembly is covered on the base assembly and the switch valve is opened, the water in the box flows through the first pipe to the second pipe, and flows to the water inlet through the second pipe. Finally, the water flowing out of the water inlet flows directly into the sink under the action of gravity. There is no need to set up an additional pipe connecting the water inlet and the sink, and the structure is very simple.

[0030] In one embodiment, two first limiting ribs are provided on the upper shell, and a second limiting rib is provided on the knob or the valve core. The second limiting rib is located between the two first limiting ribs and the movable range is limited by the two first limiting ribs, so that the rotation of the valve core is limited between the closed position and the open position.

[0031] In this way, the rotation of the knob is limited to a certain range, rather than rotating within a 360° range, which is conducive to simplifying the structure and making the knob rotation operation more convenient.

[0032] In one embodiment, a connecting rod is provided at one end of the valve core, and the other end is configured to be conical, and the valve core is connected to the knob via the connecting rod.

[0033] In this way, the end of the valve core away from the knob is set into a cone shape, which reduces the contact area between the valve core and the valve body, reduces the friction between the valve core and the valve body, and makes it easier for the knob to drive the valve core to rotate, thereby improving the operating feel.

[0034] In one embodiment, an assembly groove is provided on the outer wall of the valve core, and the assembly groove is located between the connecting rod and the flow channel. A sealing ring is provided in the assembly groove, and the sealing ring seals and connects the valve core and the valve body.

[0035] In this way, water leakage at the connection between the valve core and the valve body can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the conventional technology, the following briefly introduces the drawings required for use in the embodiments or the conventional technology descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0037] Figure 1 This is an exploded view of a grilling machine according to an embodiment of the present application;

[0038] Figure 2 This is a cross-sectional view of a grilling machine according to an embodiment of the present application;

[0039] Figure 3 Another cross-sectional view of the grilling machine according to one embodiment of the present application;

[0040] Figure 4 This is a partial cross-sectional view of a grilling machine according to an embodiment of the present application, cut through a switch valve;

[0041] Figure 5 This is an exploded view of the switch valve and knob according to one embodiment of the present application;

[0042] Figure 6 This is a partial cross-sectional view of a grilling machine according to an embodiment of the present application, cut through the positioning structure;

[0043] Figure 7 for Figure 1 A partial enlarged view of point A in the middle;

[0044] Figure 8 A top view of the grilling machine at the knob position according to an embodiment of the present application;

[0045] Figure 9 for Figure 8 a cross-sectional view of the structure shown;

[0046] Figure 10 This is a cross-sectional view of an on-off valve in a closed position according to an embodiment of the present application;

[0047] Figure 11 for Figure 10 A schematic diagram of the structure shown when the lock is locked in the first slot;

[0048] Figure 12 for Figure 10 A schematic diagram of the structure shown when the lock is locked in the second slot;

[0049] Figure 13 for Figure 10 A schematic diagram of the structure shown when the lock is locked in the third slot;

[0050] Figure 14 This is a partial structural diagram of a base assembly according to an embodiment of the present application;

[0051] Figure 15 A cross-sectional view of a valve core according to another embodiment of the present application;

[0052] Figure 16 This is a cross-sectional view of a valve core according to another embodiment of the present application.

[0053] Reference numerals: 10, base assembly; 11, bottom shell; 12, lower baking tray; 121, cooking groove; 122, water sink; 13, lower heating element; 131, first heating element; 132, second heating element; 20, upper cover assembly; 21, upper shell; 211, locking groove; 212, first locking groove; 213, second locking groove; 2131, first groove; 2132, second groove; 2133, third groove; 214, first limiting rib; 215, accommodating groove; 2151, avoidance hole; 22, upper baking tray; 221, water inlet; 23, upper heating element; 24, Upper reflector; 30, water tank assembly; 31, tank body; 311, water inlet; 32, pipeline; 321, first tube; 322, second tube; 33, tank cover; 40, switch valve; 41, valve body; 411, valve cavity; 412, water inlet; 413, water outlet; 42, valve core; 421, flow channel; 4211, variable section; 4212, constant section; 422, connecting rod; 423, assembly groove; 424, sealing ring; 50, knob; 51, installation groove; 52, second limiting rib; 53, card slot; 60, lock buckle; 70, elastic part. DETAILED DESCRIPTION

[0054] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0055] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0056] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0057] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.

[0058] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more of the relevant listed items.

[0059] See Figure 1 The present application provides a grilling machine, comprising a base assembly 10, an upper cover assembly 20, and a water tank assembly 30. The upper cover assembly 20 can cover the base assembly 10. In the present application, the upper cover assembly 20 is rotatably connected to the base assembly 10 via a hinge assembly. When cooking, the upper cover assembly 20 can be opened for open-lid cooking, or the upper cover assembly 20 can be covered on the base assembly 10 for closed-lid cooking.

[0060] The base assembly 10 includes a lower grilling tray 12, which is provided with a cooking trough 121 and a water tank 122. A water tank assembly 30 is mounted on the base assembly 10 or the upper cover assembly 20. The water tank assembly 30 includes a housing 31 and a pipe 32. The housing 31 is connected to the water tank 122 via the pipe 32. A switch valve 40 is provided on the pipe 32. The switch valve 40 includes a valve body 41 and a valve core 42 rotatably disposed within the valve body 41. The switch valve 40 controls the flow of the pipe 32 by rotating the valve core 42. The grilling machine provided by this application does not require filling the water tank 122 with water before cooking. Water can simply be added to the housing 31. When the water tank 122 needs water, the valve core 42 is rotated to open the switch valve 40, connecting the pipe 32 to the housing 31 and the water tank 122, allowing the water in the housing 31 to flow into the water tank 122. When the required amount of water has been added, rotating the valve core 42 until the switch valve 40 is closed disconnects the housing 31 from the water tank 122, thereby stopping the addition of water. Furthermore, the amount of water flowing into the water tank 122 can be controlled by the switch valve 40. During use, only a small amount of water can be added to the water tank 122, allowing for rapid steam generation when the water tank 122 is heated. Furthermore, during the cooking process, the housing 31 can be controlled to add or stop water to the water tank 122 simply by opening and closing the switch valve 40, without the need to open the upper cover assembly 20. This avoids the problem of steam escaping and a rapid drop in temperature that can affect the cooking effect when adding water with the cover opened. The opening and closing of the switch valve 40 is controlled by rotating the valve core 42, making it simple to operate and easy to use.

[0061] Further, see Figure 1 and Figure 2 The water tank assembly 30 is mounted on the upper cover assembly 20. Specifically, the upper cover assembly 20 includes an upper shell 21 and an upper grilling tray 22. The water tank assembly 30 and the on-off valve 40 are both mounted between the upper shell 21 and the upper grilling tray 22. When the upper cover assembly 20 is closed on the base assembly 10, the tank 31 is positioned above the lower grilling tray 12. Water within the tank 31 flows to the water trough 122 of the lower grilling tray 12 by gravity, eliminating the need for a water pump or other power supply mechanism, resulting in a simpler structure. Of course, in other embodiments, the water tank assembly 30 can also be mounted on the base assembly 10, as long as the water within the tank 31 can be transported to the water trough 122 via the pipe 32. The tank 31 can be positioned above or below the water trough 122. If the water within the tank 31 cannot be transported to the water trough 122 by gravity, a water pump can be provided to provide power for the water flow.

[0062] Furthermore, the housing 31 has a water inlet 311, with at least the water inlet 311 exposed from the upper shell 21, making it convenient for a user to add water to the housing 31 through the water inlet 311. It should be understood that the "exposed" in "at least the water inlet 311 exposed from the upper shell 21" refers to being exposed to the outside, i.e., not obstructed, and does not specifically mean that the water inlet 311 protrudes from the upper shell 21. The water inlet 311 may protrude from the upper shell 21, may be recessed from the upper shell 21, or the end face of the water inlet 311 may be flush with the outer wall of the upper shell 21. As long as the water inlet 311 is exposed from the upper shell 21, water can be added to the housing 31 through the water inlet 311.

[0063] In this embodiment, the box body 31 is connected to the upper shell 21 through fasteners, but is not limited thereto. In other embodiments, the box body may also be integrally formed with the upper shell, and this application does not impose any limitation on this.

[0064] It will be appreciated that the water tank assembly 30 also includes a tank cover 33, which removably covers the water inlet 311 to prevent foreign matter from falling into the tank body 31. Furthermore, a seal is provided between the tank cover 33 and the tank body 31. This seal provides a sealed connection between the tank cover 33 and the tank body 31, thereby preventing water leakage and allowing the upper cover assembly 20 to be flipped open. In one embodiment, the seal is a silicone seal ring, which provides a good sealing effect.

[0065] See Figure 3 and Figure 5 The valve body 41 is provided with a valve chamber 411 and a water inlet 412 and a water outlet 413 communicating with the valve chamber 411. The pipeline 32 includes a first tube 321 connected to the water inlet 412 and a second tube 322 connected to the water outlet 413. The first tube 321 communicates with the housing 31, and the second tube 322 communicates with the water tank 122. The valve core 42 is rotatably disposed within the valve chamber 411 and is provided with a flow passage 421. The valve core 42 has a closed position and an open position. When the valve core 42 is in the closed position, the valve core 42 blocks the water inlet 412 and / or the water outlet 413. When the valve core 42 is in the open position, the flow passage 421 communicates with the water inlet 412 and the water outlet 413. In this way, the water inlet 412 and the water outlet 413 can be controlled by rotating the valve core 42, thereby controlling the flow of water in the pipeline 32. The switch valve 40 has a very simple structure and is easy to control. It is understood that "the valve core 42 blocks the water inlet 412 and / or the water outlet 413" means that the valve core 42 blocks either or both of the water inlet 412 and the water outlet 413. In this embodiment, when the valve core 42 is in the closed position, the valve core 42 blocks the water inlet 412, but the present invention is not limited thereto. In other embodiments, when the valve core is in the closed position, the valve core may also block the water outlet, or the valve core may block both the water inlet and the water outlet.

[0066] In one embodiment, the first tube 321 and the second tube 322 are flexible pipes, which facilitates adjustment of the installation positions of the first tube 321 and the second tube 322 in the upper shell 21 , making the installation of the pipeline 32 more flexible.

[0067] See Figure 2 The upper grilling tray 22 has a water inlet 221, and the end of the second pipe 322 away from the valve body 41 is connected to the water inlet 221. When the upper cover assembly 20 is closed on the base assembly 10, the orthographic projection of the water inlet 221 on the base assembly 10 falls into the water tank 122. In this way, when the upper cover assembly 20 is closed on the base assembly 10 and the switch valve 40 is opened, the water in the box 31 flows through the first pipe 321 to the second pipe 322, and then flows through the second pipe 322 to the water inlet 221. Finally, the water flowing out of the water inlet 221 flows directly into the water tank 122 under the action of gravity. There is no need to set up a separate pipe connecting the water inlet 221 and the water tank 122, and the structure is very simple.

[0068] See Figure 2 and Figure 3 The upper cover assembly 20 further includes an upper heating element 23 and an upper reflector 24. The upper heating element 23 is mounted on the back of the upper grilling pan 22 for heating the upper grilling pan 22. In this embodiment, the upper heating element 23 is a heat pipe with a simple structure. The upper reflector 24 is disposed between the upper shell 21 and the upper grilling pan 22. The upper heating element 23 is mounted on the upper reflector 24 and is located on the side of the upper reflector 24 facing the upper grilling pan 22. The housing 31 and the on-off valve 40 are both disposed between the upper reflector 24 and the upper shell 21. A first tube 321 is disposed between the upper reflector 24 and the upper shell 21, and a second tube 322 passes through the upper reflector 24 and is connected to the water inlet 221. In this way, the upper reflector 24 reflects heat emitted from the upper heating element 23 toward the upper shell 21 to the upper grilling pan 22, thereby improving heating efficiency. The upper reflector 24 also acts as a heat insulator, preventing the upper shell 21 from overheating and preventing the water in the housing 31 from being heated and generating steam.

[0069] See Figure 5 In one embodiment, the flow passage 421 is provided on the outer wall of the valve core 42 and extends along the circumference of the valve core 42. Thus, the flow passage 421 has a simple structure and is easy to manufacture. Furthermore, when the valve core 42 is rotated, it is easier to control the size of the flow passage 421 connecting the water inlet 412 and the water outlet 413, thereby facilitating control of the water flow rate.

[0070] Further, see Figure 4The cross-sectional area of ​​the flow passage 421 increases from one end to the other. Thus, when the valve core 42 of the switch valve 40 is rotated from the closed position to the open position, the water flow increases. Reverse rotation of the valve core 42 can reduce the water flow and eventually switch to the closed position. This arrangement of the present embodiment makes it easier to control the water flow and prevents the water from splashing directly onto the food due to a sudden increase in water flow when the valve core 42 is switched from the closed position to the open position. Figure 4 In the illustrated embodiment, the valve core 42 rotates clockwise to switch from the closed position to the open position, and in the open position, the water flow gradually increases as the valve core 42 continues to rotate clockwise. Conversely, the water flow gradually decreases when the valve core 42 rotates counterclockwise until the valve core 42 switches to the closed position.

[0071] Furthermore, in one embodiment, if Figure 4 As shown, flow passage 421 comprises a variable flow section 4211 and a constant flow section 4212, which are connected in sequence. The cross-sectional area of ​​variable flow section 4211 gradually increases from the end away from constant flow section 4212 to the end closer to constant flow section 4212. The cross-sectional area of ​​constant flow section 4212 remains constant along the circumference of valve core 42, and the cross-sectional area of ​​constant flow section 4212 is larger than the cross-sectional area of ​​the variable flow section closer to the constant flow section. As a result, when valve core 42 is rotated from the closed position to the open position, the water flow gradually increases, and eventually the water flow is maintained at a constant state, thus ensuring the stability of the water flow at high flow rates.

[0072] But not limited to this, in another embodiment, Figure 15 As shown, the cross-sectional area of ​​the flow channel 421 gradually increases from one end to the other end. In this way, when the switch valve 40 is opened, the water flow also changes from small to large, which is easy to control. Figure 16 As shown, the cross-sectional area of ​​the flow channel 421 increases stepwise from one end to the other end. Thus, when the switch valve 40 is opened, the water flow also increases from small to large, making it easy to control.

[0073] Furthermore, the valve core 42 is connected to a knob 50. Thus, by turning the knob 50, the user can control the rotation of the valve core 42, thereby controlling the opening and closing of the on-off valve 40, thereby achieving on-off control of the water flow in the pipe 32. This embodiment allows for manual control and is very convenient to operate. However, in other embodiments, the valve core can also be connected to an electric drive to control the rotation of the valve core, thereby achieving automatic control of the water tank filling.

[0074] Furthermore, the knob 50 is at least partially exposed from the upper housing 21, making it easier for the user to rotate the knob 50. It should be understood that "the knob 50 is at least partially exposed from the upper housing 21" means that the knob 50 is at least partially visible and can be rotated by the user. In this embodiment, the knob 50 protrudes from the surface of the upper housing 21, making it more convenient for the user to rotate the knob 50.

[0075] Further, see Figure 6 A positioning structure is provided between the upper shell 21 and the knob 50. The positioning structure includes a lock buckle 60 and a lock slot 211. One of the lock buckle 60 and the lock slot 211 is provided on the upper shell 21, and the other is provided on the knob 50. In this embodiment, the lock buckle 60 is provided on the knob 50, and the lock slot 211 is provided on the upper shell 21. Of course, in other embodiments, the lock buckle may be provided on the upper shell, and the lock slot may be provided on the knob. Rotating the knob 50 can lock the lock buckle 60 into or out of the lock slot 211. When the lock buckle 60 is locked into the lock slot 211, the knob 50 is restricted from rotating. It can be understood that by applying sufficient external force to rotate the knob 50, the lock buckle 60 can be disengaged from the lock slot 211. Please refer to Figure 7 The locking groove 211 includes a first locking groove 212 and a second locking groove 213. When the lock buckle 60 is locked in the first locking groove 212, the valve core 42 is in the closed position. Figure 10 When the lock 60 is locked in the second lock groove 213, the valve core 42 is in the open position, as shown Figures 11 to 13 In this way, by providing the positioning structure, the knob 50 can be locked in a preset position, thereby preventing the knob 50 from changing its position due to accidental touch and thus preventing the opening and closing state of the switch valve 40 from changing.

[0076] Further, see Figure 6 The positioning structure further includes an elastic member 70, which is disposed at the end of the lock catch 60 away from the lock slot 211. The elastic member 70 applies a force to the lock catch 60 to move toward the lock slot 211. The elastic force of the elastic member 70 thus facilitates the lock catch 60 to lock in the lock slot 211, and facilitates the lock catch 60 to disengage from the lock slot 211 when the knob 50 is rotated. This improves the feel of the knob 50 and provides a better user experience.

[0077] In one embodiment, if Figure 6 As shown, a lock slot 211 is provided in the upper housing 21, and a lock catch 60 and an elastic member 70 are provided in the knob 50. Specifically, the knob 50 is provided with a mounting slot 51, and both the lock catch 60 and the elastic member 70 are installed in the mounting slot 51, with the elastic member 70 abutting against the lock catch 60 and the bottom wall of the mounting slot 51. Thus, the provision of the mounting slot 51 provides installation space for the lock catch 60 and the elastic member 70, making it difficult for the elastic member 70 and the lock catch 60 to fall out. The lock slot 211 is provided in the upper housing 21, and the lock catch 60 and the elastic member 70 are provided in the mounting slot 51 of the knob 50, resulting in a very simple structure.

[0078] Furthermore, the elastic member 70 is configured as a compression spring, which has a simple structure and can provide a good elastic force. The end of the lock catch 60 away from the elastic member 70 is configured as a spherical surface, and the lock slot 211 is configured as a circular groove. This makes it easier for the lock catch 60 to engage and disengage from the lock slot 211, and the rotation operation of the knob 50 is smoother.

[0079] It is understandable that there is only one first lock groove 212. Since when the valve core 42 is in the closed position, the switch valve 40 is in the closed state, the first pipe 321 and the second pipe 322 are not connected, and the water flow is zero, it is sufficient to set one first lock groove 212.

[0080] See Figure 7 In one embodiment, the second locking groove 213 is provided with three, namely the first groove 2131, the second groove 2132 and the third groove 2133. The first groove 2131, the second groove 2132 and the third groove 2133 are arranged in sequence. Figure 7 and Figures 11 to 13 When the lock buckle 60 is locked in the first groove 2131, the minimum flow area of ​​the flow channel 421 is smaller than when the lock buckle 60 is locked in the second groove 2132. The minimum flow area of ​​the flow channel 421 when the lock buckle 60 is locked in the second groove 2132 is smaller than when the lock buckle 60 is locked in the third groove 2133. It should be understood that the "minimum flow area of ​​the flow channel 421" refers to the portion of the flow channel 421 with the smallest cross-sectional area when water flows through it. This minimum flow area determines the magnitude of the water flow. In this way, when the lock buckle 60 is locked in the first groove 2131, the second groove 2132, or the third groove 2133, the flow channel 421 has different water flow rates. Thus, the knob 50 can be locked in three different flow rate positions, allowing the user to select different flow rates as needed.

[0081] See Figure 7 、 Figures 10 to 13 In this embodiment, the first locking groove 212, the first groove 2131, the second groove 2132 and the third groove 2133 are sequentially spaced along the first direction. When the lock buckle 60 is locked in the first locking groove 212, the valve core 42 is in the closed position, such as Figure 10 As shown, the switch valve 40 is in the closed state. At this time, the knob 50 can be turned clockwise to rotate the valve core 42 clockwise. When the lock 60 is locked in the first groove 2131, please Figure 11 As shown, the water flow is small; when the lock 60 is locked in the second groove 2132, please combine Figure 12 As shown, the water flow is large; when the lock 60 is locked in the third groove 2133, please combine Figure 13As shown, the water flow is greater. It can be seen that rotating the valve core 42 in the clockwise direction can switch the switch valve 40 from the closed state to the open state, and the water flow gradually increases. When the knob 50 is rotated in the reverse direction, the water flow gradually decreases until it is closed.

[0082] See Figures 7 to 9 To facilitate user operation, the words "Off," "Small," "Large," and "Continuous" are respectively labeled next to the first lock slot 212, the first slot 2131, the second slot 2132, and the third slot 2133. "Off" indicates that the switch valve 40 is closed, "Small" indicates a small water flow, "Large" indicates a large water flow, and "Continuous" indicates a large and continuous water flow. Furthermore, a first indicator point is provided on the knob 50, and four second indicator points are provided on the upper shell 21. These four second indicator points correspond to the words "Off," "Small," "Large," and "Continuous," respectively. When the first indicator point is rotated to face the second indicator point, the knob 50 indicates that the switch valve 40 has been turned to the corresponding open or closed state. This allows the user to clearly identify the open or closed state of the switch valve 40 based on the text.

[0083] In this embodiment, three second lock slots 213 are provided, so that when the valve core 42 is in the open position, three flow rate settings are available. However, the present invention is not limited thereto. Two second lock slots may also be provided, and accordingly, two flow rate settings are available when the valve core is in the open position. One, four, or more second lock slots may also be provided, and this is not limited in this application. Furthermore, during use, the user may rotate the knob 50 until the lock catch 60 is located between the two second lock slots 213, that is, the lock catch 60 is out of the lock slot 211. At this time, as long as the knob 50 is not touched, the water flow rate will not change.

[0084] Further, see Figure 7 and Figure 9 Two first limiting ribs 214 are provided on the upper housing 21, and a second limiting rib 52 is provided on the knob 50 or valve core 42. The second limiting rib 52 is located between the two first limiting ribs 214 and its range of motion is limited by the two first limiting ribs 214, thereby restricting the rotation of the valve core 42 between the closed and open positions. This restricts the rotation of the knob 50 to a certain range, rather than a full 360° range. This simplifies the structure and makes the knob 50 more convenient to operate.

[0085] Further, see Figure 3 and Figure 5 The valve core 42 has a connecting rod 422 at one end and a tapered end at the other end. The valve core 42 is connected to the knob 50 via the connecting rod 422. The tapered end of the valve core 42, which is away from the knob 50, reduces the contact area between the valve core 42 and the valve body 41, reducing friction between the valve core 42 and the valve body 41. The knob 50 can more easily drive the valve core 42 to rotate, resulting in a better operating feel.

[0086] In this embodiment, see Figure 6 and Figure 9 , a slot 53 is provided in the center of the knob 50, and one end of the connecting rod 422 is inserted into the slot 53, so that the connection between the knob 50 and the valve core 42 can be achieved. The structure is very simple and the connection is very convenient. In this embodiment, the cross-section of the connecting rod 422 is set to be D-shaped, and the shape of the slot 53 matches the shape of the connecting rod 422. When the connecting rod 422 is inserted into the slot 53, the knob 50 and the valve core 42 are relatively fixed in the circumferential direction, so that the valve core 42 can be rotated together with the knob 50 when the knob 50 is rotated. Of course, in other embodiments, the cross-section of the connecting rod 422 can also be set to other shapes such as square and hexagon, as long as the knob 50 and the valve core 42 cannot rotate relative to each other when the connecting rod 422 is inserted into the slot 53. Of course, the connecting rod 422 can also be connected to the knob 50 by other means such as bonding, fastener connection, etc., and this application does not limit this.

[0087] Further, see Figure 3 、 Figure 5 and Figure 6 The outer wall of the valve core 42 is provided with an assembly groove 423, located between the connecting rod 422 and the flow passage 421. A sealing ring 424 is disposed within the assembly groove 423, sealingly connecting the valve core 42 and the valve body 41. This prevents water leakage at the connection between the valve core 42 and the valve body 41. In this embodiment, the sealing ring 424 is made of silicone, which provides a good sealing effect.

[0088] See Figure 6 and Figure 7 In one embodiment, the upper housing 21 is provided with a receiving groove 215, the bottom wall of which is provided with a relief hole 2151. The connecting rod 422 extends through the relief hole 2151 and connects to the retaining groove 53 of the knob 50. The first limiting rib 214 and the second limiting rib 52 are both located within the receiving groove 215, resulting in a very compact structure. The valve body 41 is mounted on the side of the receiving groove 215 away from the knob 50 via fasteners. One end of the valve body 41 can abut against the upper housing 21, eliminating the need for a valve cover and simplifying the structure.

[0089] See Figure 1 、 Figure 2 、 Figure 3 and Figure 14The base assembly 10 also includes a bottom shell 11 and a lower heating element 13. The lower heating element 13 is disposed between the bottom shell 11 and the lower grilling plate 12. The lower heating element 13 includes a first heating element 131 and a second heating element 132. The first heating element 131 is used to heat the cooking tank 121, and the second heating element 132 is used to heat the water tank 122. Thus, by actively heating the water tank 122 through the second heating element 132, this embodiment can generate steam more quickly than using a heating element to heat the cooking tank and then transferring heat from the cooking tank to the water tank. It is worth noting that the first heating element 131 and the second heating element 132 can be set to open and close simultaneously or independently. In the independent opening and closing scheme, cooking food and providing steam do not interfere with each other, thus preventing the water tank 122 from drying out when steam is not needed. This makes it more convenient to use and helps extend the service life of the grill.

[0090] The first heating element 131 and the second heating element 132 are both heating tubes, which have a simple structure and low cost. The first heating element 131 is arranged below the cooking tank 121, and the second heating element 132 is arranged below the water tank 122.

[0091] In this embodiment, the water tank 122 is located on one side of the cooking tank 121 and near the hinge assembly of the grill, resulting in a very simple structure. In this embodiment, the second heating element 132 is configured in an arc shape, which allows for a longer length within the limited space, thereby facilitating rapid heating of the water tank 122 to generate steam. However, this is not limiting. In other embodiments, the second heating element 132 may also be configured in a straight line.

[0092] In addition, in other embodiments, the lower heating element can also be set as one element, and the lower heating element is located under the cooking tank and the water tank at the same time, so that the lower heating element can heat the cooking tank and the water tank at the same time, thus making the structure simpler.

[0093] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0094] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of patent protection for the present application shall be determined by the appended claims.

Claims

1. A grilling machine, characterized in that: The invention comprises a base assembly (10), an upper cover assembly (20) and a water tank assembly (30), wherein the upper cover assembly (20) can cover the base assembly (10), the base assembly (10) comprises a lower baking tray (12), the lower baking tray (12) is provided with a cooking trough (121) and a water tank (122), the water tank assembly (30) is installed on the base assembly (10) or the upper cover assembly (20), the water tank assembly (30) comprises a box body (31) and a pipe (32), the box body (31) can be connected to the water tank (122) through the pipe (32), a switch valve (40) is provided on the pipe (32), the switch valve (40) comprises a valve body (41) and a valve core (42) rotatably arranged in the valve body (41), and the switch valve (40) controls the on-off of the pipe (32) by the rotation of the valve core (42).

2. The grilling machine according to claim 1, characterized in that: The valve body (41) is provided with a valve cavity (411) and a water inlet (412) and a water outlet (413) communicating with the valve cavity (411); the pipeline (32) comprises a first pipe (321) connected to the water inlet (412) and a second pipe (322) connected to the water outlet (413); the first pipe (321) is communicated with the box (31), and the second pipe (322) is communicated with the water tank (122). The valve core (42) is rotatably disposed in the valve cavity (411). The valve core (42) is provided with a flow passage (421). The valve core (42) has a closed position and an open position. When the valve core (42) is in the closed position, the valve core (42) blocks the water inlet (412) and / or the water outlet (413); when the valve core (42) is in the open position, the flow passage (421) communicates with the water inlet (412) and the water outlet (413).

3. The grilling machine according to claim 2, characterized in that: The flow passage (421) is provided on the outer wall of the valve core (42) and extends along the circumference of the valve core (42).

4. The grilling machine according to claim 3, characterized in that: The cross-sectional area of ​​the flow passage (421) increases from one end of the flow passage (421) to the other end.

5. The grilling machine according to claim 4, characterized in that: The flow passage (421) comprises a variable section (4211) and a constant section (4212) connected in sequence, the cross-sectional area of ​​the variable section (4211) gradually increases from the end of the variable section (4211) away from the constant section (4212) to the end close to the constant section (4212), the cross-sectional area of ​​the constant section (4212) remains unchanged along the circumference of the valve core (42), and the cross-sectional area of ​​the constant section (4212) is greater than the cross-sectional area of ​​the end of the variable section (4211) close to the constant section (4212).

6. The grilling machine according to claim 4, characterized in that: The cross-sectional area of ​​the flow passage (421) gradually increases from one end of the flow passage (421) to the other end; Alternatively, the cross-sectional area of ​​the flow passage (421) increases in a step-like manner from one end of the flow passage (421) to the other end.

7. The grilling machine according to any one of claims 2 to 6, characterized in that: The valve core (42) is connected to a knob (50).

8. The grilling machine according to claim 7, characterized in that: The upper cover assembly (20) comprises an upper shell (21) and an upper baking tray (22); the water tank assembly (30) and the switch valve (40) are both installed between the upper shell (21) and the upper baking tray (22); and the knob (50) is at least partially exposed from the upper shell (21).

9. The grilling machine according to claim 8, characterized in that: A positioning structure is provided between the upper shell (21) and the knob (50), the positioning structure comprising a lock buckle (60) and a lock slot (211), one of the lock buckle (60) and the lock slot (211) being provided on the upper shell (21), and the other being provided on the knob (50). The rotation of the knob (50) can lock the lock buckle (60) into the lock slot (211) or disengage the lock buckle (60) from the lock slot (211). When the lock buckle (60) is locked into the lock slot (211), the rotation of the knob (50) is restricted. The locking groove (211) comprises a first locking groove (212) and a second locking groove (213); when the locking buckle (60) is locked in the first locking groove (212), the valve core (42) is in the closed position; when the locking buckle (60) is locked in the second locking groove (213), the valve core (42) is in the open position.

10. The grilling machine according to claim 9, characterized in that: The positioning structure further comprises an elastic member (70), wherein the elastic member (70) is provided at one end of the lock buckle (60) away from the lock slot (211), and the elastic member (70) applies a force to the lock buckle (60) to move toward the lock slot (211).

11. The grilling machine according to claim 10, characterized in that: The locking slot (211) is provided on the upper shell (21), the knob (50) is provided with a mounting slot (51), the locking buckle (60) and the elastic member (70) are both installed in the mounting slot (51), and the elastic member (70) is supported by the locking buckle (60) and the bottom wall of the mounting slot (51).

12. The grilling machine according to claim 9, characterized in that: The second locking grooves (213) are provided in three forms, namely a first groove (2131), a second groove (2132) and a third groove (2133). The first groove (2131), the second groove (2132) and the third groove (2133) are provided in sequence and spaced apart. When the lock buckle (60) is locked in the first groove (2131), the minimum flow area of ​​the flow channel (421) is smaller than the minimum flow area of ​​the flow channel (421) when the lock buckle (60) is locked in the second groove (2132); and when the lock buckle (60) is locked in the second groove (2132), the minimum flow area of ​​the flow channel (421) is smaller than the minimum flow area of ​​the flow channel (421) when the lock buckle (60) is locked in the third groove (2133).

13. The grilling machine according to claim 8, characterized in that The box body (31) has a water inlet (311), and at least the water inlet (311) is exposed from the upper shell (21).

14. The grilling machine according to claim 8, characterized in that The upper baking tray (22) has a water inlet (221), and one end of the second tube (322) away from the valve body (41) is connected to the water inlet (221). When the upper cover assembly (20) covers the base assembly (10), the orthographic projection of the water inlet (221) on the base assembly (10) falls into the water tank (122).

15. The grilling machine according to claim 8, characterized in that: Two first limiting ribs (214) are provided on the upper shell (21), and a second limiting rib (52) is provided on the knob (50) or the valve core (42). The second limiting rib (52) is located between the two first limiting ribs (214) and its range of movement is limited by the two first limiting ribs (214), so that the rotation of the valve core (42) is limited between the closed position and the open position.

16. The grilling machine according to claim 7, characterized in that: One end of the valve core (42) is provided with a connecting rod (422), and the other end is configured to be conical. The valve core (42) is connected to the knob (50) via the connecting rod (422).

17. The grilling machine according to claim 16, characterized in that: An assembly groove (423) is provided on the outer wall of the valve core (42), and the assembly groove (423) is located between the connecting rod (422) and the flow channel (421). A sealing ring (424) is provided in the assembly groove (423), and the sealing ring (424) seals and connects the valve core (42) and the valve body (41).

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