Steam discharging device and cooking appliance

Abstract

This invention discloses a steam emission device and a cooking appliance. The steam emission device includes a baffle and a drive mechanism. The baffle is rotatably disposed within the exhaust channel of the cooking appliance. The baffle has vents, the flow cross-section of which is smaller than the flow cross-section of the exhaust channel. The baffle has an open state and a closed state. In the open state, the exhaust channel communicates with the cooking cavity of the cooking appliance. In the closed state, the exhaust channel communicates with the cooking cavity through the vents. The drive mechanism is driven by the baffle and selectively switches the baffle between the open and closed states by rotation. When cooking is complete, the drive mechanism drives the baffle to rotate and switch to the open state, allowing the exhaust channel to directly communicate with the cooking cavity. High-temperature steam is discharged through the exhaust channel, preventing scalding of the user by high-temperature steam and avoiding condensation that could affect the cooking effect, thus improving the user experience.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and more particularly to a steam emission device and a cooking appliance. Background Technology

[0002] This section provides only background information relevant to this disclosure and is not necessarily prior art.

[0003] Cooking appliances with steam function (such as steam ovens or steam ovens) typically include a door, a steam generator, and a body with a cooking cavity. The door is installed on the body in an openable and closable manner, and the cooking cavity is opened or closed by opening and closing the door. The steam generator is located on the body and supplies high-temperature steam into the cooking cavity. The high-temperature steam entering the cooking cavity can steam the food.

[0004] After cooking, the high-temperature steam in the cooking cavity needs to be released by opening the door. However, the high-temperature steam can easily burn users, and after the temperature drops, the high-temperature steam condenses on the surface of the food and the inner wall of the cooking cavity, forming condensation water, which affects the cooking effect. Summary of the Invention

[0005] The objective of this invention is to at least solve the problem of adverse effects caused by high-temperature steam. This objective is achieved through the following technical solution:

[0006] A first aspect of the present invention provides a steam exhaust device for a cooking appliance having an exhaust passage, the steam exhaust device comprising:

[0007] A baffle is rotatably disposed within the exhaust channel. The flow cross-section of the air hole is smaller than that of the exhaust channel. The baffle has an open state and a closed state. The baffle is provided with an air hole. In the open state, the exhaust channel is connected to the cooking cavity of the cooking appliance. In the closed state, the exhaust channel is connected to the cooking cavity through the air hole.

[0008] A drive mechanism is connected to the baffle in a transmission manner, and the drive mechanism is used to drive the baffle to selectively switch between the open state and the closed state in a rotational manner.

[0009] According to the steam emission device of the present invention, when the steam emission device is used in a cooking appliance, the baffle is disposed in the exhaust channel of the cooking appliance and is connected to the drive mechanism. When the cooking appliance steams the food, the steam generator of the cooking appliance supplies high-temperature steam to the cooking chamber. At this time, the baffle switches to the closed state, and the cooking chamber is only connected to the exhaust channel through the air hole to balance the air pressure in the cooking chamber. When the cooking is completed, the drive mechanism drives the baffle to rotate and switch to the open state. At this time, the exhaust channel is directly connected to the cooking chamber, and the high-temperature steam in the cooking chamber is discharged through the exhaust channel, preventing the high-temperature steam from scalding the user and preventing condensation from affecting the cooking effect, thereby improving the user experience.

[0010] In addition, the steam emission device according to the present invention may also have the following additional technical features:

[0011] In some embodiments of the present invention, the baffle is further provided with a first connecting hole and a second connecting hole spaced apart. The steam emission device further includes a first connecting shaft and a second connecting shaft. The first connecting shaft passes through the first connecting hole and is connected to the first structural component of the cooking appliance. The second connecting shaft passes through the second connecting hole and is connected to the driving mechanism. The driving mechanism drives the baffle to rotate relative to the first connecting shaft through the second connecting shaft.

[0012] In some embodiments of the present invention, the driving mechanism includes:

[0013] Drive components;

[0014] The first transmission component, wherein the rotating shaft of the driving component is fixedly connected to the first transmission component;

[0015] The second transmission component has one end rotatably connected to the first transmission component, the rotation axis of the second transmission component is parallel to and spaced apart from the rotation axis of the rotating shaft, and the other end of the second transmission component is rotatably connected to the baffle through the second connecting shaft.

[0016] In some embodiments of the present invention, the driving mechanism further includes a limit switch, which cooperates with the limiting structure of the first transmission member to limit the stroke of the first transmission member.

[0017] In some embodiments of the present invention, the limiting structure is a protrusion formed on the first transmission member, the protrusion being able to contact and cooperate with the limiting switch to limit the stroke of the first transmission member.

[0018] In some embodiments of the present invention, the first transmission member is a transmission disk, and the protrusion structure is formed on the edge of the transmission disk and extends radially outward from the transmission disk.

[0019] In some embodiments of the present invention, the baffle is disposed at the air inlet of the exhaust channel. In the open state, the baffle is located outside the air inlet, and in the closed state, the baffle blocks the air inlet.

[0020] In some embodiments of the present invention, the steam emission device further includes a pressure plate mounted on a second structural member of the cooking appliance, the pressure plate abutting against the baffle to press the baffle against the air inlet.

[0021] In some embodiments of the present invention, the pressure plate is provided with a sliding groove, and at least a portion of the edge of the baffle is slidably disposed within the sliding groove.

[0022] In some embodiments of the present invention, the steam exhaust device further includes a fan disposed within the exhaust channel. In the open state, the fan is configured to draw high-temperature steam from the cooking cavity into the exhaust channel and discharge it through the exhaust channel.

[0023] A second aspect of the invention also provides a cooking utensil, the cooking utensil comprising:

[0024] The machine body includes a cooking chamber and an exhaust channel, one end of which communicates with the cooking chamber, and the other end of which communicates with the outside.

[0025] According to the steam emission device described above, the steam emission device is located in the exhaust passage.

[0026] According to the cooking appliance of the present invention, the baffle of the steam exhaust device is disposed in the exhaust channel of the cooking appliance and is connected to the drive mechanism. When the cooking appliance steams the food, high-temperature steam is introduced into the cooking chamber. At this time, the baffle switches to the closed state, and the cooking chamber is connected to the exhaust channel only through the air hole to balance the air pressure in the cooking chamber. When the cooking is completed, the drive mechanism drives the baffle to rotate and switch to the open state. At this time, the exhaust channel is directly connected to the cooking chamber, and the high-temperature steam in the cooking chamber is discharged through the exhaust channel, preventing the user from being scalded by high-temperature steam and preventing the generation of condensation water from affecting the cooking effect, thereby improving the user experience.

[0027] In some embodiments of the present invention, the cooking appliance further includes a steam generating device disposed on the body and configured to supply high-temperature steam into the cooking cavity. Attached Figure Description

[0028] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0029] Figure 1 A schematic cross-sectional view of a cooking appliance according to an embodiment of the present invention is shown (the baffle is in the closed state, and the thick black arrows in the figure indicate the airflow direction).

[0030] Figure 2 for Figure 1 A partial structural diagram of the cooking utensil shown;

[0031] Figure 3 for Figure 1 A partial structural diagram of the cooking utensil shown (the thick black arrows in the diagram indicate the airflow direction);

[0032] Figure 4 for Figure 3 The diagram shows an enlarged view of part A in the structure shown (the thick black arrow in the diagram indicates the airflow direction);

[0033] Figure 5 for Figure 1 A schematic diagram of the steam exhaust device in the cooking appliance shown (fan not shown);

[0034] Figure 6 for Figure 5 A schematic diagram of the structure shown from another perspective;

[0035] Figure 7 for Figure 1 The diagram shows the cooking appliance in another state (the baffle is closed, and the thick black arrows in the diagram indicate the airflow direction);

[0036] Figure 8 for Figure 7 A partial structural diagram of the cooking utensil shown;

[0037] Figure 9 for Figure 7 A partial structural diagram of the cooking utensil shown (the thick black arrows in the diagram indicate the airflow direction);

[0038] Figure 10 for Figure 9 The diagram shows an enlarged view of section B in the structure shown (the thick black arrow in the diagram indicates the airflow direction).

[0039] The attached figures are labeled as follows:

[0040] 100 refers to cooking utensils;

[0041] 10 represents the body;

[0042] 11 is the cooking cavity, 12 is the exhaust channel, 13 is the top plate, and 131 is the air inlet;

[0043] 20 represents the gate body;

[0044] 30 is a steam exhaust device;

[0045] 31 is the fan;

[0046] 32 is a baffle;

[0047] 321 is a pore;

[0048] 33 is the drive mechanism;

[0049] 331 is the second transmission component, 3311 is the weight reduction hole, 332 is the driving component, 333 is the first transmission component, 3331 is the limiting structure, and 334 is the limit switch.

[0050] 34 is the first connecting shaft;

[0051] 35 is the second connecting shaft;

[0052] 36 is the pressure plate;

[0053] 361 is a groove. Detailed Implementation

[0054] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0055] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0056] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0057] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0058] like Figures 1 to 10 As shown, according to an embodiment of the present invention, a steam exhaust device 30 is provided for a cooking appliance 100. The steam exhaust device 30 includes a drive mechanism 33 and a baffle 32. The baffle 32 is disposed within the exhaust channel 12 of the cooking appliance 100 and is rotatable relative to the exhaust channel 12. The baffle 32 has two states, one of which is an open state (e.g., ...). Figure 8 As shown), another state is the off state (as shown). Figure 2 As shown), when the baffle 32 is in the closed state, the cooking cavity 11 of the cooking appliance 100 is connected to the exhaust channel 12 through the air hole 321 of the baffle 32 (the flow cross-section of the exhaust channel 12 is larger than the flow cross-section of the air hole 321). When the baffle 32 is in the open state, the cooking cavity 11 is directly connected to the exhaust channel 12. The drive mechanism 33 is connected to the baffle 32 and drives the baffle 32 to rotate. The baffle 32 can be switched between the closed and open states by rotating.

[0059] Specifically, when the steam exhaust device 30 is used in the cooking appliance 100, the baffle 32 is installed in the exhaust channel 12 of the cooking appliance 100 and is connected to the drive mechanism 33. When the cooking appliance 100 steams the food, the steam generator of the cooking appliance 100 supplies high-temperature steam to the cooking chamber 11. At this time, the baffle 32 is switched to the closed state, and the cooking chamber 11 is connected to the exhaust channel 12 only through the air hole 321 to balance the air pressure in the cooking chamber 11. When the cooking is completed, the drive mechanism 33 drives the baffle 32 to rotate and switch to the open state. At this time, the exhaust channel 12 is directly connected to the cooking chamber 11, and the high-temperature steam in the cooking chamber 11 is discharged through the exhaust channel 12, preventing the high-temperature steam from scalding the user and preventing condensation from affecting the cooking effect, thereby improving the user experience.

[0060] It is important to understand that when the baffle 32 is closed, the cooking chamber 11 can only be connected to the exhaust channel 12 through the air hole 321 on the baffle 32. At this time, the cooking chamber 11 is only partially connected to the exhaust channel 12 to balance the air pressure in the cooking chamber 11 and prevent the air pressure in the cooking chamber 11 from being too high. When the baffle 32 is open, the baffle 32 does not obstruct the connection between the exhaust channel 12 and the cooking chamber 11. At this time, the cooking chamber 11 is fully connected to the exhaust channel 12 to ensure that high-temperature steam is discharged from the cooking chamber 11 through the exhaust channel 12 and to prevent the adverse effects of high-temperature steam after cooking.

[0061] It should be noted that the vent 321 is formed on the baffle 32, and the vent 321 is a circular hole structure, and the diameter of the vent 321 can be 3mm, 5mm, 7mm, etc. As a specific embodiment, in this invention, the diameter of the vent 321 is 5mm. By setting the diameter of the vent 321 to 5mm, the air pressure inside the cooking cavity 11 is balanced, while preventing the high-temperature steam from producing a whistling sound when passing through the vent 321.

[0062] In various embodiments of the present invention, the baffle 32 is rotatably disposed within the exhaust channel 12 of the cooking appliance 100.

[0063] In some embodiments of the present invention, the baffle 32 is completely disposed inside the exhaust channel 12. The baffle 32 rotates about an axis perpendicular to the flow direction of the high-temperature steam in the exhaust channel 12. That is, the drive mechanism 33 drives the baffle 32 to rotate in the exhaust channel 12 to form a structure similar to a flap, so as to switch between the open state and the closed state.

[0064] The shape of the baffle 32 is adapted to the cross-sectional shape of the exhaust channel 12. When the baffle 32 is in the closed state, the edge of the baffle 32 is fitted to the inner wall of the exhaust channel 12.

[0065] In some embodiments of the present invention, such as Figure 2 and Figure 8 As shown, the baffle 32 is completely disposed inside the exhaust channel 12. The baffle 32 rotates within the flow section of the exhaust channel 12. That is, the drive mechanism 33 drives the baffle 32 to swing within the flow section of the exhaust channel 12 to switch between the open and closed states.

[0066] In this embodiment, the cooking cavity 11 is connected to the exhaust channel 12 through the air inlet 131. The flow cross-section of the air inlet 131 is smaller than that of the exhaust channel 12. The baffle 32 is disposed in the exhaust channel 12. The flow cross-section of the exhaust channel 12 can meet the swing requirements of the baffle 32. The area of ​​the baffle 32 is greater than or equal to the flow cross-section of the air inlet 131. The air inlet 131 is opened or closed by swinging the baffle 32 in the exhaust channel 12, so as to achieve selective switching between the open state and the closed state.

[0067] To understand further, such as Figure 2 , Figure 5 , Figure 6 and Figure 8 As shown, two spaced-apart connection holes are also provided on the baffle 32, namely the first connection hole and the second connection hole. The steam exhaust device 30 also includes two connection shafts, namely the first connection shaft 34 and the second connection shaft 35. Part of the body of the first connection shaft 34 is inserted into the first connection hole, and one end of the first connection shaft 34 is fixedly connected to the first structural member of the cooking appliance 100. The second connection shaft 35 passes through part of the structure of the drive mechanism 33 and the second connection hole respectively, so as to drive the drive mechanism 33 and the baffle 32. The drive mechanism 33 and the baffle 32 are rotatably connected at the position of the second connection shaft 35.

[0068] Specifically, the baffle 32 is mounted on the first structural component of the cooking appliance 100 via the first connecting shaft 34. The baffle 32 can rotate around the first connecting shaft 34. The drive mechanism 33 is connected to the baffle 32 via the second connecting shaft 35. When the drive mechanism 33 is running, the baffle 32 rotates around the first connecting shaft 34 under the drive of the drive mechanism 33 and the second connecting shaft 35, thereby realizing the switching between the open state and the closed state of the baffle 32.

[0069] It is necessary to understand that, such as Figure 5 and Figure 6 As shown, the first connecting shaft 34 and the second connecting shaft 35 form an eccentric structure on the baffle 32 (the first connecting shaft 34 and the second connecting shaft 35 are arranged in parallel and spaced apart). The baffle 32 is driven to swing by the drive mechanism 33, so that the baffle 32 can be selectively switched between the open state and the closed state. The overall structure is simple and can effectively reduce the manufacturing cost of the steam emission device 30.

[0070] It should be noted that the baffle 32 can be a metal part (stainless steel plate or copper plate, etc.) or a non-metal part (food-grade plastic, etc.). In a specific embodiment of the present invention, the baffle 32 is a stainless steel plate. By setting the baffle 32 to a stainless steel plate, the strength of the baffle 32 is ensured, so that the impact of high-temperature steam on the baffle 32 during the switching from the open state to the closed state will not cause the baffle 32 to deform, avoid the steam emission device 30 from malfunctioning, ensure the steam emission effect of the cooking appliance 100, and eliminate the adverse effects of high-temperature steam after cooking.

[0071] In addition, such as Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, the exhaust channel 12 can be located on the top or side of the body 10 of the cooking appliance 100. In an embodiment of the present invention, the exhaust channel 12 is located on the top of the body 10, and the cooking appliance 100 enters the exhaust channel 12 through the top plate 13 of the cooking cavity 11. The first structural member used to fix the first connecting shaft 34 can be the top plate 13 (the top plate 13 constitutes part of the exhaust channel 12) or other structures of the body 10. As a specific embodiment, the first connecting shaft 34 is fixed on the top plate 13, thereby simplifying the structure and reducing the overall manufacturing cost.

[0072] In some embodiments of the present invention, the drive mechanism 33 includes an electric motor, the shaft of which is fixedly connected to the baffle 32. The baffle 32 is oscillated by the shaft of the electric motor, thereby realizing the switching of the state of the baffle 32.

[0073] It should be noted that in this embodiment, the motor is a geared motor and a stepper motor, thereby ensuring control over the swing angle of the baffle 32.

[0074] In some embodiments of the present invention, such as Figure 2 , Figure 5 , Figure 6 and Figure 8 As shown, the drive mechanism 33 includes a drive member 332 and two transmission members, namely a first transmission member 333 and a second transmission member 331. The drive member 332 has a rotating shaft for power output. The first transmission member 333 is fixedly connected to the rotating shaft of the drive member 332. One end of the second transmission member 331 is rotatably connected to the first transmission member 333. The rotatable connection position between the second transmission member 331 and the first transmission member 333 is spaced apart from the rotating shaft of the drive member 332. That is, the rotation axis of the second transmission member 331 relative to the first transmission member 333 is not coaxial with the rotating shaft. The other end of the second transmission member 331 is rotatably connected to the second connecting shaft 35.

[0075] Specifically, the driving component 332, the first transmission component 333, the second transmission component 331, and the baffle 32 form a crank-connecting rod mechanism. The driving component 332 drives the first transmission component 333 to rotate eccentrically via a rotating shaft, thereby driving the second transmission component 331 to reciprocate. The reciprocating motion of the second transmission component 331 causes the baffle 32 to swing, and the swing of the baffle 32 allows for selective switching between the open and closed states. The crank-connecting mechanism provides high precision control over the swing angle of the baffle 32, effectively ensuring the accuracy of the baffle 32's state switching and guaranteeing the steam emission effect of the steam emission device 30 on the cooking appliance 100.

[0076] It should be understood that the first transmission component 333 is connected to the rotating shaft of the driving component 332 and the second transmission component 331 respectively. The rotating shaft and the second transmission component 331 are connected to different positions of the first transmission component 333. The rotating shaft is fixed to the first transmission component 333, so that the first transmission component 333 rotates synchronously with the rotating shaft. During the synchronous rotation of the first transmission component 333 with the rotating shaft, it drives the second transmission component 331 to move around the rotating shaft in a circumferential direction (the second transmission component 331 rotates relative to the first transmission component 333 while rotating around the rotating shaft in a circumferential direction). The movement of the second transmission component 331 is transmitted to the baffle 32 through the second connecting shaft 35, causing the baffle 32 to swing.

[0077] It should be noted that, in the embodiments of the present invention, the driving component 332 can be a stepper motor or a wax motor, etc. As a specific embodiment, in the embodiments of the present invention, the driving component 332 is a stepper motor, which can improve the precise control of the swing angle of the baffle 32.

[0078] Furthermore, such as Figure 2 , Figure 5 , Figure 6 and Figure 8 As shown, the drive mechanism 33 also includes a limit switch 334 for limiting the travel of the first transmission member 333. Specifically, the limit switch 334 is arranged adjacent to the first transmission member 333. During the process of the drive member 332 driving the first transmission member 333 to rotate, the limiting structure 3331 on the first transmission member 333 rotates synchronously with the first transmission member 333. When the limiting structure 3331 cooperates with the limit switch 334, the limit switch 334 cuts off the power supply circuit of the drive member 332, causing the drive member 332 to stop running, so as to maintain the current state of the baffle 32.

[0079] By setting a limit switch 334 and cooperating with the limit structure 3331 on the first transmission component 333, accurate control of the stroke of the baffle 32 is achieved, thereby ensuring the accuracy of the state switching of the baffle 32.

[0080] In some embodiments of the present invention, the limit switch 334 is a photoelectric switch, and the limit structure 3331 on the first transmission member 333 is a blocking structure. When the blocking structure blocks the transmitting end of the photoelectric switch, the photoelectric switch disconnects the power supply circuit of the driving member 332, so that the position of the baffle 32 is maintained.

[0081] In some embodiments of the present invention, such as Figure 2 , Figure 5 , Figure 6 and Figure 8 As shown, the limit switch 334 is a contact switch with an elastic contact. The limit structure 3331 is a protruding structure formed on the first transmission member 333. When the driving member 332 drives the first transmission member 333 to rotate, the protruding structure rotates synchronously with the first transmission member 333. When the protruding structure rotates to the position of the elastic contact, the protruding structure abuts against the elastic contact, triggering the contact switch and switching the power supply circuit of the driving member 332. At this time, the first transmission member 333, the second transmission member 331, and the baffle 32 all stop operating, thereby maintaining the current position of the baffle 32.

[0082] In some examples of the present invention, the first transmission member 333 is a rod-shaped member, one end of which is fixedly connected to the rotating shaft of the driving member 332 (the two are perpendicularly fixed), and the other end of which is hinged to the second transmission member 331. A protruding structure is provided on the rod-shaped member, and the position of the protruding structure is spaced apart from the connection position between the rotating shaft and the rod-shaped member, so that the protruding structure can rotate with the rod-shaped member. By making the first transmission member 333 a rod-shaped member, the structure of the driving mechanism 33 is simplified, thereby reducing the manufacturing cost of the steam emission device 30.

[0083] In some examples of the present invention, such as Figure 2 , Figure 5 , Figure 6 and Figure 8 As shown, the first transmission component 333 is configured as a transmission disk, with a protruding structure located at the edge of the transmission disk and extending radially outward. Specifically, the protruding structure is located at the edge of the transmission disk and extends radially outward. The limit switch 334 is positioned near the radially outward side of the transmission disk. The rotating shaft of the drive component 332 and the second transmission component 331 are respectively connected to the transmission disk. The drive component 332 drives the transmission disk to rotate using the rotating shaft. During the rotation of the transmission disk, the second transmission component 331 moves synchronously, thereby driving the baffle 32 to swing, thus achieving the switching of the baffle 32's state. The overall structure of the transmission disk has good stability, ensuring the stability of each connection position and preventing stress concentration that could lead to loosening or breakage of the connection.

[0084] In addition, the protruding structure is positioned to facilitate cooperation with the limit switch 334, thereby effectively using the limit switch 334 to limit the stroke of the first transmission component 333, thus ensuring the accuracy of the state switching of the baffle 32.

[0085] It should be noted that the fixed position of the rotating shaft of the drive component 332 and the transmission disk can be the center of the transmission disk or other positions outside the center. In this invention, the specific connection position of the rotating shaft and the transmission disk is not limited.

[0086] Furthermore, such as Figure 2 , Figure 5 , Figure 6 and Figure 8 As shown, in an embodiment of the present invention, the second transmission member 331 is configured as a transmission rod having at least one weight-reducing hole 3311. Specifically, the second transmission member 331 is configured as a transmission rod, so that the first transmission member 333 and the baffle 32 have a certain transmission distance, in order to facilitate the overall layout of the steam emission device 30.

[0087] In addition, a weight reduction hole 3311 is provided on the transmission rod, which can effectively reduce the mass of the transmission rod, thereby achieving lightweight treatment of the drive mechanism 33 and reducing energy consumption during the drive process.

[0088] It should be noted that the number of weight reduction holes 3311 can be one, two, three, four, etc. In a specific embodiment of the present invention, the number of weight reduction holes 3311 is one and it is an elongated hole arranged along the length direction of the transmission rod.

[0089] Furthermore, such as Figure 3 , Figure 4 , Figure 9 and Figure 10 As shown, the exhaust channel 12 of the cooking appliance 100 is provided with an air inlet 131 that communicates with the cooking chamber 11. A baffle 32 is provided at the air inlet 131. In the open state, the baffle 32 is outside the air inlet 131. In the closed state, the baffle 32 blocks the air inlet 131. The pressure plate 36 of the steam exhaust device 30 is installed on the second structural member of the cooking appliance 100. At the same time, the pressure plate 36 abuts against the baffle 32. Under the action of the pressure plate 36, the baffle 32 is pressed tightly at the position of the air inlet 131.

[0090] By setting the pressure plate 36, a certain pressure is created between the baffle 32 and the air inlet 131. When the pressure plate 36 is switched to the closed state, the sealing between the baffle 32 and the air inlet 131 is guaranteed, preventing air leakage at the joint between the baffle 32 and the air inlet 131, and ensuring the closing effect of the baffle 32 on the air inlet 131.

[0091] It should be noted that, in the embodiments of the present invention, the exhaust channel 12 is located on the top of the body 10, and the air inlet 131 of the exhaust channel 12 is opened on the top plate 13 of the cooking cavity 11. The second structural member used to fix the pressure plate 36 can be the top plate 13 (the top plate 13 constitutes part of the exhaust channel 12), or it can be other structures of the body 10 of the cooking appliance 100. As a specific embodiment, the pressure plate 36 is fixed on the top plate 13, thereby simplifying the structure and reducing the overall manufacturing cost.

[0092] In addition, the pressure plate 36 can be a metal part (stainless steel plate or copper plate, etc.) or a non-metal part (food-grade plastic, etc.). In a specific embodiment of the present invention, the pressure plate 36 is a stainless steel plate. By setting the pressure plate 36 to a stainless steel plate, the strength of the pressure plate 36 is guaranteed, thereby ensuring the pressing effect of the pressure plate 36 on the baffle 32, and thus improving the airtightness of the baffle 32 during the movement.

[0093] Furthermore, such as Figure 6 As shown, a groove 361 is provided on the pressure plate 36. The groove 361 is arranged along the swing direction of the baffle 32, and at least a portion of the edge of the baffle 32 is slidably disposed within the groove 361. Specifically, when the drive mechanism 33 drives the baffle 32 to swing, at least a portion of the edge of the baffle 32 slides within the groove 361 during the swing process. The groove 361 not only achieves the pressing of the baffle 32, ensuring the airtightness of the baffle 32 during its movement, but also provides a guiding effect for the swing of the baffle 32, ensuring higher accuracy in the swing position of the baffle 32.

[0094] It should be noted that, in the embodiments of the present invention, the pressure plate 36 is a stainless steel plate, and the groove 361 is formed on the pressure plate 36 by stamping, thereby improving the ease of processing the pressure plate 36 and reducing the manufacturing cost of the pressure plate 36.

[0095] Furthermore, such as Figure 1 , Figure 3 , Figure 7 and Figure 9 As shown, the steam exhaust device 30 also includes a fan 31, which is located inside the exhaust channel 12. When the cooking appliance 100 is used to steam the food, the drive mechanism 33 drives the baffle 32 to switch to the closed state. At this time, the cooking chamber 11 can only be connected to the exhaust channel 12 through the air hole 321 on the baffle 32, and the fan 31 is in the stopped state. When the cooking is completed, the drive mechanism 33 drives the baffle 32 to the open state. At this time, the cooking chamber 11 is fully connected to the exhaust channel 12, and the fan 31 runs, so that the high-temperature steam in the cooking chamber 11 enters the exhaust channel 12 through the air inlet 131 and is discharged to the outside through the exhaust channel 12.

[0096] By setting up fan 31, the high-temperature steam in the cooking cavity 11 is strongly exhausted, thereby improving the exhaust efficiency of high-temperature steam, reducing the waiting time for users, and improving the user experience.

[0097] The present invention also proposes a cooking utensil 100, such as Figures 1 to 10 As shown, the cooking appliance 100 includes a body 10 and a steam exhaust device 30 as described above. The body 10 is provided with a cooking chamber 11 and an exhaust passage 12. One end of the exhaust passage 12 is connected to the cooking chamber 11, and the other end of the exhaust passage 12 is connected to the outside. The steam exhaust device 30 is provided in the exhaust passage 12.

[0098] Specifically, the baffle 32 of the steam exhaust device 30 is installed in the exhaust channel 12 of the cooking appliance 100 and is connected to the drive mechanism 33. When the cooking appliance 100 steams the food, high-temperature steam is introduced into the cooking chamber 11. At this time, the baffle 32 is switched to the closed state, and the cooking chamber 11 is connected to the exhaust channel 12 only through the air hole 321 to balance the air pressure in the cooking chamber 11. When the cooking is completed, the drive mechanism 33 drives the baffle 32 to rotate and switch to the open state. At this time, the exhaust channel 12 is directly connected to the cooking chamber 11, and the high-temperature steam in the cooking chamber 11 is discharged through the exhaust channel 12, preventing the high-temperature steam from scalding the user and preventing condensation from affecting the cooking effect, thereby improving the user experience.

[0099] Furthermore, the cooking appliance 100 also includes a steam generating device, which is located on the body 10 and configured to supply high-temperature steam to the cooking chamber 11. Specifically, the steam generating device includes a water pump, a water tank, and a steam generator. The water tank is detachably installed on the body 10 and has a clean water chamber inside. The water inlet of the steam generator is connected to the clean water chamber through the water pump, and the exhaust port of the steam generator is connected to the cooking chamber 11.

[0100] When steaming is required, open the door 20 of the cooking appliance 100, place the food into the cooking chamber 11 of the appliance 10, close the door 20, and operate the steam generator. Under the action of the water pump, purified water enters the steam generator, which heats the water to form high-temperature steam and delivers it into the cooking chamber 11 for steaming. During steaming, the cooking chamber 11 is connected to the exhaust channel 12 through the air vent 321 of the baffle 32, thus balancing the air pressure within the cooking chamber 11. After cooking is complete, turn off the steam generator and activate the steam exhaust device 30. Once the steam exhaust device 30 has released the high-temperature steam from the cooking chamber 11, open the door 20 to remove the cooked food.

[0101] In this invention, the cooking appliance can be a steam oven or a steam oven, etc. For other structures of the cooking appliance, please refer to the prior art. Here, this invention will not elaborate further.

[0102] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A steam exhaust device for a cooking appliance equipped with an exhaust duct, characterized in that, The steam emission device includes: A baffle is rotatably disposed at the air inlet of the exhaust channel. The baffle has an air hole with a flow cross-section smaller than that of the exhaust channel. The baffle has an open state and a closed state. In the open state, the baffle is located outside the air inlet, so that the exhaust channel communicates with the cooking cavity of the cooking appliance. In the closed state, the baffle blocks the air inlet, so that the exhaust channel communicates with the cooking cavity through the air hole. A drive mechanism is connected to the baffle in a transmission manner, and the drive mechanism is used to drive the baffle to selectively switch between the open state and the closed state in a rotational manner; A pressure plate is installed on the second structural component of the cooking appliance. The pressure plate abuts against the baffle to press the baffle tightly against the air inlet. The pressure plate is provided with a sliding groove, and at least a portion of the edge of the baffle is slidably disposed in the sliding groove.

2. The steam emission device according to claim 1, characterized in that, The baffle is also provided with a first connecting hole and a second connecting hole spaced apart. The steam emission device also includes a first connecting shaft and a second connecting shaft. The first connecting shaft passes through the first connecting hole and is connected to the first structural component of the cooking appliance. The second connecting shaft passes through the second connecting hole and is connected to the driving mechanism. The driving mechanism drives the baffle to rotate relative to the first connecting shaft through the second connecting shaft.

3. The steam emission device according to claim 2, characterized in that, The drive mechanism includes: Drive components; The first transmission component, wherein the rotating shaft of the driving component is fixedly connected to the first transmission component; The second transmission component has one end rotatably connected to the first transmission component, the rotation axis of the second transmission component is parallel to and spaced apart from the rotation axis of the rotating shaft, and the other end of the second transmission component is rotatably connected to the baffle through the second connecting shaft.

4. The steam emission device according to claim 3, characterized in that, The drive mechanism also includes a limit switch, which cooperates with the limiting structure of the first transmission member to limit the stroke of the first transmission member.

5. The steam emission device according to claim 4, characterized in that, The limiting structure is a protrusion formed on the first transmission member, which can contact and cooperate with the limit switch to limit the stroke of the first transmission member.

6. The steam emission device according to claim 5, characterized in that, The first transmission component is a transmission disk, and the protrusion structure is formed on the edge of the transmission disk and extends radially outward from the transmission disk.

7. The steam emission device according to claim 1, characterized in that, The steam exhaust device also includes a fan, which is disposed in the exhaust channel. In the open state, the fan is configured to draw high-temperature steam from the cooking cavity into the exhaust channel and discharge it through the exhaust channel.

8. A cooking utensil, characterized in that, The cooking appliance includes: The machine body includes a cooking chamber and an exhaust channel, one end of which communicates with the cooking chamber, and the other end of which communicates with the outside. The steam emission device according to any one of claims 1 to 7 is located in the exhaust passage.

9. The cooking utensil according to claim 8, characterized in that, The cooking appliance also includes a steam generator, which is located on the body and configured to supply high-temperature steam into the cooking cavity.

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