Cover body assembly and cooking utensil with same
The electric pressure cooker lid assembly, designed with a pressure-free valve and a shielding cover, solves the problem of excessive exhaust noise, achieving noise reduction and sealing effects, and improving the user experience.
Patent Information
- Application Number
- CN202422158041.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-09-03
AI Technical Summary
The existing electric pressure cooker lid assembly is too noisy when venting, which affects the user experience.
It adopts a pressureless valve and shield cover design, and increases the exhaust cross section through the pressureless channel and the partitioned chamber structure, thereby reducing steam flow rate and noise. It also utilizes the difference in flow area and flow direction of multiple exhaust ports to consume gas energy and reduce noise generation.
It effectively reduces noise during steam exhaust, improves user experience, has a simple structure that is easy to disassemble and assemble, and has good sealing performance to prevent steam leakage and noise generation.
Smart Images
Figure CN223169565U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cooking appliances, and more specifically, to a lid assembly and a cooking appliance having the same. Background Art
[0002] At present, an exhaust cavity is provided on the lid of an electric pressure cooker. The exhaust cavity is used for exhausting air. A detachable lid is also provided on the lid. The detachable lid covers the steam cavity. The detachable lid can shield the components in the steam cavity to protect the components and improve the aesthetics.
[0003] In the prior art, when the exhaust cavity exhausts air, the steam discharge speed is relatively fast, the exhaust pressure is high, and the exhaust passage is relatively narrow, resulting in a large noise during the exhaust process, which affects the user experience. Summary of the Utility Model
[0004] The utility model provides a lid assembly and a cooking appliance having the same to solve the problem of excessive noise during the exhaust of the lid assembly in the prior art.
[0005] According to one aspect of the utility model, a lid assembly is provided. The lid assembly includes: a lid having a steam cavity and a non-pressure passage communicating with each other. The steam cavity and the non-pressure passage cooperate to exhaust air. The non-pressure passage has an air inlet and a first exhaust port; a non-pressure valve movably disposed on the lid. The non-pressure valve can conduct or block the non-pressure passage; a shielding lid disposed in the steam cavity and above the non-pressure passage. The shielding lid divides the steam cavity into a first chamber and a second chamber. The second chamber can communicate with the outside. The first exhaust port of the non-pressure passage communicates with the first chamber. The shielding lid has a second exhaust port communicating the first chamber and the second chamber; wherein, the flow area of the first exhaust port is smaller than the flow area of the first chamber, and / or the flow area of the second exhaust port is smaller than the flow area of the second chamber.
[0006] Applying the technical solution of the present utility model, the non-pressure valve conducts or blocks the non-pressure channel. Compared with the cover assembly with a pressure valve in the prior art solution, the non-pressure valve can increase the effective exhaust cross-section of the non-pressure channel and improve the single exhaust volume. The shielding cover divides the steam chamber into a first chamber and a second chamber. After the steam flows into the steam chamber, the steam cover can consume its kinetic energy, reduce the flow rate of the steam, and thus reduce the friction between the steam and the components in the steam chamber to achieve the purpose of noise reduction. There is a first exhaust port on the non-pressure channel, and a second exhaust port on the shielding cover. The flow area of the first exhaust port is smaller than the flow area of the first chamber. In this way, when the gas flows from the first exhaust port into the first chamber, the sound wave will diffuse, interfere, or reflect, resulting in a decrease in the intensity of the sound wave. At the same time, the larger chamber is likely to reduce the resonance effect of the sound wave and can also reduce noise. The flow area of the second exhaust port is smaller than the flow area of the second chamber, so that the noise generated when the gas flows in the steam chamber can be further reduced, improving the user experience.
[0007] Further, the non-pressure channel extends in the vertical direction, and the first exhaust port is arranged in a direction perpendicular to the extension of the non-pressure channel. In this way, when the steam enters the non-pressure channel and is discharged from the first exhaust port, the flow direction of the steam will change, thereby reducing the flow rate of the steam and reducing the generation of noise.
[0008] Further, the second exhaust port is located above the non-pressure channel. With such a setting, after the fluid flows out of the first exhaust port, the flow direction will change during the process of flowing towards the second exhaust port, thereby consuming the energy of the fluid and reducing the noise generated by the fluid.
[0009] Further, the shielding cover has an exhaust part, the exhaust part protrudes from the top of the shielding cover, the exhaust part covers above the non-pressure channel, and the second exhaust port is arranged on the top and / or side wall of the exhaust part. Through the above setting, it is convenient for the processing of the second exhaust port. At the same time, the exhaust part and the cover body can form an installation space for the exhaust pipe, and the exhaust part can avoid the end of the exhaust pipe to prevent interference with the exhaust pipe.
[0010] Further, the distance between the first exhaust port and the second exhaust port in the vertical direction is d, where 5mm ≤ d ≤ 30mm. Such a setting can ensure the exhaust rate of the gas, and at the same time can consume the energy of the gas during the gas flow process to reduce the noise generated by the collision of the gas with the components.
[0011] Further, the cover body includes a steam cover and a steam seat. The steam cover and the steam seat cooperate to form a steam chamber. The steam cover is arranged above the shielding cover, the first chamber is formed between the steam seat and the shielding cover, and the second chamber is formed between the steam cover and the shielding cover. Through the above setting, the steam chamber is formed by using the separately arranged steam seat and steam cover, and its structure is simple and convenient for disassembly and assembly.
[0012] Further, the steam cover is provided with a third exhaust port, and the flow area of the third exhaust port is smaller than that of the second chamber. With such a setting, when the gas flows from the second chamber to the third exhaust port, the sound wave will diffuse, interfere or reflect again due to the change in the size of the flow chamber, resulting in a decrease in the intensity of the sound wave, which can further reduce the noise generated when the gas flows in the steam chamber and improve the user experience.
[0013] Further, seals are provided between the shielding cover and the steam cover, and between the shielding cover and the steam base. This prevents the steam in the steam chamber from flowing out through the gaps between the shielding cover and the steam cover and the steam base to other components or chambers, causing damage to electronic components, and also avoids the noise generated due to the steam flowing out through the gaps.
[0014] Further, the bottom of the steam cover fits with the top of the steam base. The outer periphery of the shielding cover is provided with a first sealing groove and a second sealing groove, which are arranged at intervals in the vertical direction. The first sealing groove corresponds to the inner wall of the steam cover, and the second sealing groove corresponds to the inner wall of the steam base. Seals are provided in both the first sealing groove and the second sealing groove. With such a setting, the shielding cover can be hermetically matched with both the bottom of the steam cover and the top of the steam base, which can further improve the sealing effect.
[0015] According to another aspect of the present invention, a cooking appliance is provided, and the cooking appliance includes the above-mentioned lid assembly. The above-mentioned lid assembly can effectively solve the problem of excessive exhaust noise when the lid assembly exhausts in the prior art, and the cooking appliance with the above-mentioned lid assembly also has the above-mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:
[0017] Figure 1 shows a schematic structural diagram of the lid assembly provided by the present invention;
[0018] Figure 2 shows Figure 1 a partial enlarged view of A in
[0019] Figure 3 shows a schematic structural diagram of the exhaust pipe provided by the present invention;
[0020] Figure 4 shows a schematic structural diagram of the shielding member provided by the present invention;
[0021] Figure 5 shows a schematic structural diagram of the steam cover provided by the present invention;
[0022] Figure 6 Shows a schematic structural diagram of the steam seat provided by the present utility model.
[0023] Among them, the above-mentioned drawings include the following reference numerals:
[0024] 10. Cover body;
[0025] 11. Steam chamber; 111. First chamber; 112. Second chamber;
[0026] 12. Non-pressure passage; 121. Air inlet; 122. First exhaust port;
[0027] 13. Steam cover; 131. Third exhaust port;
[0028] 14. Steam seat; 141. Pushing hole; 142. Mounting hole;
[0029] 15. Elastic seal;
[0030] 20. Non-pressure valve;
[0031] 21. Link rod; 211. First seal; 212. Second seal;
[0032] 22. First driving mechanism; 221. Driving end;
[0033] 23. Second driving mechanism;
[0034] 30. Shielding cover;
[0035] 31. Second exhaust port; 32. Exhaust part;
[0036] 33. First sealing groove; 34. Second sealing groove;
[0037] 40. Exhaust pipe;
[0038] 41. Fourth exhaust port. Detailed implementation manners
[0039] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way restrictive of the present utility model and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0040] Such as Figures 1 to 3As shown in the figure, an embodiment of the present utility model provides a cover assembly, which includes: a cover body 10, a pressureless valve 20, and a shielding cover 30. Among them, the steam chamber 11 cooperates with the pressureless passage 12 for exhausting gas. The pressureless passage 12 has an air inlet 121 and a first exhaust port 122. The pressureless valve 20 is movably arranged on the cover body 10, and the pressureless valve 20 can conduct or block the pressureless passage 12. The shielding cover 30 is arranged in the steam chamber 11 and is located above the pressureless passage 12. The shielding cover 30 divides the steam chamber 11 into a first chamber 111 and a second chamber 112. The second chamber 112 can communicate with the outside. The first exhaust port 122 of the pressureless passage 12 communicates with the first chamber 111. The shielding cover 30 has a second exhaust port 31, and the second exhaust port 31 communicates the first chamber 111 and the second chamber 112. Among them, the flow area of the first exhaust port 122 is smaller than the flow area of the first chamber 111, and the flow area of the second exhaust port 31 is smaller than the flow area of the second chamber 112. In the present application, the flow area refers to the cross-sectional area of the first chamber 111 or the second chamber 112 in the direction perpendicular to the fluid flow direction.
[0041] Applying the technical solution of the present utility model, by conducting or blocking the pressureless passage 12 through the pressureless valve 20, compared with the cover assembly with a pressure valve in the prior art, the pressureless valve 20 can increase the effective exhaust cross-section of the pressureless passage 12 and improve the single exhaust volume. The shielding cover 30 divides the steam chamber 11 into a first chamber 111 and a second chamber 112. After the steam flows into the steam chamber 11, the shielding cover 30 can consume its kinetic energy, reduce the flow rate of the steam, and thus reduce the friction between the steam and the components in the steam chamber 11 to achieve the purpose of noise reduction. The pressureless passage 12 has a first exhaust port 122, and the shielding cover 30 has a second exhaust port 31. The flow area of the first exhaust port 122 is smaller than the flow area of the first chamber 111. When the gas flows from the first exhaust port 122 into the first chamber 111, the sound wave will diffuse, interfere or reflect, etc., resulting in a weakening of the sound wave intensity. At the same time, the larger chamber is likely to reduce the resonance effect of the sound wave and can also reduce the noise. The flow area of the second exhaust port 31 is smaller than the flow area of the second chamber 112, so that the noise generated when the gas flows in the steam chamber 11 can be further reduced, improving the user experience.
[0042] In other embodiments, the flow area of the first exhaust port 122 can be smaller than the flow area of the first chamber 111, and the size of the flow area of the second exhaust port 31 and the flow area of the second chamber 112 is not limited.
[0043] In some other embodiments of the present application, the flow area of the second exhaust port 31 can be smaller than the flow area of the second chamber 112, and the size of the flow area of the first exhaust port 122 and the flow area of the first chamber 111 is not limited.
[0044] Such asFigure 2 and Figure 3 As shown, the pressureless channel 12 extends in the vertical direction, and the first exhaust port 122 is arranged in the direction perpendicular to the extension of the pressureless channel 12. Compared with the pressureless valve structure in the prior art, a radial exhaust channel is newly added in this application. Thus, when the steam enters the pressureless channel 12 and is discharged from the first exhaust port 122, the flow direction of the steam will change, thereby reducing the flow rate of the steam and the generation of noise.
[0045] Wherein, the orientation of the first exhaust port 122 is set to have a certain angle with the horizontal direction, as long as the orientation of the first exhaust port 122 is generally towards the horizontal direction.
[0046] As Figure 2 and Figure 3 shown, the cover assembly further includes an exhaust pipe 40. The exhaust pipe 40 is penetrated through the cover 10. The air inlet 121 is located at the bottom of the exhaust pipe 40, and the first exhaust port 122 is located on the side wall of the exhaust pipe 40. The exhaust pipe 40 has a pressureless channel 12, and the exhaust pipe 40 cooperates with the pressureless valve 20 to discharge the steam from the cover assembly.
[0047] Wherein, the second exhaust port 31 is located above the pressureless channel 12. With such a setting, when the fluid flows out from the first exhaust port 122, the flow direction will change during the process of flowing towards the second exhaust port 31, thereby consuming the energy of the fluid and reducing the noise generated by the fluid. Preferably, the second exhaust port 31 is located directly above the pressureless channel 12.
[0048] As Figure 2 and Figure 4 shown, the shielding cover 30 has an exhaust portion 32. The exhaust portion 32 protrudes from the top of the shielding cover 30 and covers the pressureless channel 12. The second exhaust port 31 is arranged on the exhaust portion 32. Through the above setting, it is convenient for the processing of the second exhaust port 31. At the same time, the exhaust portion 32 and the cover 10 can form an installation space for the exhaust pipe 40, and the exhaust portion 32 can avoid the end of the exhaust pipe 40 to prevent interference with the exhaust pipe 40.
[0049] Preferably, the second exhaust port 31 is arranged on the side wall of the exhaust portion 32. In this way, the exhaust portion 32 can also provide a processing position for the second exhaust port 31, which is convenient for the processing of the second exhaust port 31 on the side wall of the exhaust portion 32 to change the direction of the gas flowing out of the shielding cover 30, thereby reducing the kinetic energy of the gas and achieving noise reduction.
[0050] Optionally, the second exhaust port can also be arranged vertically on the top of the exhaust portion 32. In this way, the gas flow rate can be increased and the exhaust efficiency can be improved.
[0051] In other embodiments of the present application, multiple second exhaust ports 31 may be provided, and exhaust ports may be provided on both the top and side walls of the exhaust portion 32, so that the exhaust volume of the cover assembly can be increased.
[0052] As Figure 2 shown, the distance between the first exhaust port 122 and the second exhaust port 31 in the vertical direction is d, where 5 mm ≤ d ≤ 30 mm. If the distance between the first exhaust port 122 and the second exhaust port 31 in the vertical direction is too small, the gas discharged from the first exhaust port 122 will directly enter the second exhaust port 31. In this way, the distance between the first exhaust port 122 and the second exhaust port 31 is too close, resulting in a short flow path of the gas, less kinetic energy consumed by the gas, and greater noise generated during the gas flow. Moreover, the too-close distance between the first exhaust port 122 and the second exhaust port 31 will also result in too little space for the exhaust components to move, and it is easy for the components to interfere with each other during exhaust, resulting in poor exhaust effect. If the distance between the first exhaust port 122 and the second exhaust port 31 in the vertical direction is too large, the gas needs to flow a long distance from the first exhaust port 122 to reach the second exhaust port 31, which reduces the gas discharge rate and results in poor exhaust effect. In the present application, the distance between the first exhaust port 122 and the second exhaust port 31 in the vertical direction is set within the above range, so that the gas discharge rate can be ensured, and at the same time, the energy of the gas can be consumed during the gas flow process to reduce the noise generated by the collision of the gas with the components. Among them, the distance between the first exhaust port 122 and the second exhaust port 31 in the vertical direction can be set to 5 mm, 16 mm or 30 mm.
[0053] As Figures 2 to 6 shown, the cover 10 includes a steam cover 13 and a steam seat 14. The steam cover 13 and the steam seat 14 cooperate to form a steam chamber 11. The steam cover 13 is arranged above the shielding cover 30, and a first chamber 111 is formed between the steam seat 14 and the shielding cover 30, and a second chamber 112 is formed between the steam cover 13 and the shielding cover 30. Through the above arrangement, the steam chamber 11 is formed by using the separately arranged steam seat 14 and steam cover 13, and its structure is simple and convenient for disassembly and assembly.
[0054] As Figure 2 and Figure 5 shown, the steam cover 13 has a third exhaust port 131, and the flow area of the third exhaust port 131 is smaller than the flow area of the second chamber 112. With this arrangement, when the gas flows from the second chamber 112 to the third exhaust port 131, the sound wave will diffuse, interfere or reflect again due to the change in the size of the flow chamber, resulting in a decrease in the intensity of the sound wave, which can further reduce the noise generated when the gas flows in the steam chamber 11 and improve the user experience.
[0055] In this embodiment, seals are provided between the shielding cover 30 and the steam cover 13, and between the shielding cover 30 and the steam seat 14. This arrangement ensures the tightness of the assembly between the shielding cover 30, the steam cover 13, and the steam seat 14, thereby ensuring the sealing of the steam chamber 11. This prevents steam in the steam chamber 11 from escaping through the gaps between the shielding cover 30, the steam cover 13, and the steam seat 14 into other components or chambers, potentially damaging electronic components. It also prevents noise generated by steam escaping through the gaps. It also prevents impurities outside the steam chamber 11 from entering the steam chamber 11.
[0056] In this embodiment, the form of the sealing structure is not limited. Multiple sealing grooves can be machined circumferentially on the contact surface between the shielding cover 30 and the steam seat 14, and sealing rings can be placed in the sealing grooves. Alternatively, multiple sealing grooves can be circumferentially arranged on the contact surface between the steam cover 13 and the shielding cover 30, and sealing rings can be placed in the sealing grooves.
[0057] like Figure 1 and Figure 2 As shown, the bottom of the steam cover 13 is in contact with the top of the steam seat 14. The outer periphery of the shielding cover 30 is provided with a first sealing groove 33 and a second sealing groove 34. The first sealing groove 33 and the second sealing groove 34 are spaced apart in the vertical direction. The first sealing groove 33 corresponds to the inner wall of the steam cover 13, and the second sealing groove 34 corresponds to the inner wall of the steam seat 14. Seals are provided in both the first sealing groove 33 and the second sealing groove 34. This configuration of the shielding cover 30 allows it to simultaneously seal against the bottom of the steam cover 13 and the top of the steam seat 14, further enhancing the sealing effect.
[0058] Specifically, the pressure-free valve 20 includes a connecting rod 21, which is movably arranged in the steam chamber 11 along the radial direction of the pressure-free channel 12. The connecting rod 21 has a sealing position capable of closing the first exhaust port 122 and an open position capable of opening the first exhaust port 122. The pressure-free valve 20 also includes a first driving mechanism 22, and the driving end 221 of the first driving mechanism 22 is connected to the connecting rod 21. The first driving mechanism 22 can drive the connecting rod 21 to switch between the sealing position and the open position. The above arrangement can realize the opening and closing of the pressure-free channel 12 by driving the connecting rod 21, and the operation is convenient. At the same time, the above design makes the structure of the pressure-free valve 20 simple, convenient for disassembly and assembly, and subsequent replacement and maintenance.
[0059] like Figure 2 and Figure 3 As shown, the connecting rod 21 is movably arranged at the first exhaust port 122 along the radial direction of the exhaust pipe 40, so that the connecting rod 21 has an angle with the gas flow direction in the exhaust pipe 40. This can reduce the interference and influence of the gas on the movement of the connecting rod 21 when the setting direction of the connecting rod 21 is consistent with the extension direction of the exhaust pipe 40, thereby improving the effect and efficiency of switching the position of the connecting rod 21.
[0060] Among them, a first seal 211 is provided on the connecting rod 21, and the first seal 211 is used to seal the first exhaust port 122. By means of the first seal 211, the contact area between the connecting rod 21 and the first exhaust port 122 can be increased, so that fluid can be prevented from discharging from the first exhaust port 122 when the connecting rod 21 is in the sealing position, ensuring the plugging effect at the first exhaust port 122 when the connecting rod 21 is in the sealing position. Among them, the specific structure of the first seal 211 is not limited, and it can be an O-ring, a gasket or a sealing strip.
[0061] Such as Figure 2 and Figure 3 As shown, in this solution, the exhaust pipe 40 also has a fourth exhaust port 41, and a second seal 212 is also provided on the connecting rod 21. The first seal 211 and the second seal 212 are spaced apart on the connecting rod 21, and the second seal 212 is provided corresponding to the fourth exhaust port 41, and the second seal 212 is used to seal the fourth exhaust port 41. The connecting rod 21 is arranged through the first exhaust port 122 and the fourth exhaust port 41. When the connecting rod 21 is in the sealing position, the connecting rod 21 can seal the first exhaust port 122 and the fourth exhaust port 41 simultaneously. In this way, the gas flowing in from the air inlet 121 can be discharged from the first exhaust port 122 and the fourth exhaust port 41 at the same time, increasing the number of exhaust ports on the exhaust pipe 40, thereby increasing the flow cross-sectional area of the non-pressure passage 12, improving the fluid flow rate, and increasing the single discharge amount of the fluid.
[0062] Such as Figure 2 and Figure 6 As shown, a pushing hole 141 is provided on the steam seat 14, and at least a part of the first driving mechanism 22 is located outside the steam chamber 11. The driving end 221 is drivingly connected to the connecting rod 21 through the pushing hole 141. In this way, the number of components in the steam chamber 11 can be reduced, avoiding interference with steam flow caused by too many components in the steam chamber 11 and ensuring the exhaust efficiency of the steam chamber 11. Among them, the steam seat 14 also has a mounting hole 142 for passing through the exhaust pipe 40.
[0063] Such as Figure 2 As shown, the cover assembly further includes an elastic seal 15. The elastic seal 15 is arranged at the pushing hole 141. The elastic seal 15 can seal the pushing hole 141. The driving end 221 is arranged corresponding to the elastic seal 15, and the driving end 221 can drive the connecting rod 21 to move by squeezing the elastic seal 15. Through the above design, the plugging effect of the pushing hole 141 can be ensured, and further the sealing performance of the steam chamber 11 can be ensured, avoiding steam or slurry from flowing out of the pushing hole 141 and damaging the first driving mechanism 22 or other components.
[0064] Among them, the non-pressure valve 20 further includes a second driving mechanism 23. The first driving mechanism 22 and the second driving mechanism 23 cooperate to drive the connecting rod 21 to switch between the sealed position and the open position. The second driving mechanism 23 and the first driving mechanism 22 are respectively arranged on both sides of the non-pressure channel 12 along the moving direction of the connecting rod 21, and the second driving mechanism 23 is drivingly connected to the side of the connecting rod 21 away from the first driving mechanism 22. Such a design makes the driving connection mode of the connecting rod 21, the first driving mechanism 22 and the second driving mechanism 23 simple and direct, improving the convenience of operation.
[0065] In this embodiment, the first driving mechanism 22 is a solenoid valve, and the second driving mechanism 23 is a spring. Such a design has a simple structure and low processing cost. By cooperating the spring with the solenoid valve, the connecting rod 21 is switched between the open position and the sealed position. In other embodiments of the present application, the first driving mechanism 22 can be set as a telescopic member, such as an oil cylinder, an electric cylinder or a lead screw, etc. When it can drive the connecting rod 21 to move reciprocally, the second driving mechanism 23 can be not provided.
[0066] In yet another embodiment of the present application, a cooking appliance is provided. The cooking appliance includes the lid assembly provided in the above embodiment. The cooking appliance further includes a pot body. The lid assembly is covered on the pot body, and the lid assembly can close or open the pot body. The above lid assembly can effectively solve the problem of excessive exhaust noise when the lid assembly exhausts in the prior art, and the cooking appliance having the above lid assembly also has the above advantages.
[0067] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.
[0068] Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and values set forth in these embodiments do not limit the scope of the present utility model. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods and devices should be regarded as part of the description. In all the examples shown and discussed here, any specific values should be construed as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it will not be necessary to discuss it further in subsequent drawings.
[0069] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by orientation terms such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Without contrary statements, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present utility model; the orientation terms "inner, outer" refer to the inside and outside relative to the contour of each component itself.
[0070] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above" and the like can be used here to describe the spatial positional relationships between a device or feature shown in the drawings and other devices or features. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the drawings. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made to the spatial relative descriptions used here.
[0071] In addition, it should be noted that the use of words such as "first", "second", etc. to limit components is only for the convenience of distinguishing the corresponding components. Without further statements, the above words have no special meanings, and thus should not be construed as limiting the protection scope of the present utility model.
[0072] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A cover assembly, characterized in that, The cover assembly includes: A cover body (10) having a steam chamber (11) and a pressureless passage (12) that communicate with each other. The steam chamber (11) cooperates with the pressureless passage (12) for exhausting air. The pressureless passage (12) has an air inlet (121) and a first exhaust port (122); A pressureless valve (20) movably disposed on the cover body (10). The pressureless valve (20) can conduct or block the pressureless passage (12); A shielding cover (30) disposed in the steam chamber (11) and above the pressureless passage (12). The shielding cover (30) divides the steam chamber (11) into a first chamber (111) and a second chamber (112). The second chamber (112) can communicate with the outside. The first exhaust port (122) of the pressureless passage (12) communicates with the first chamber (111). The shielding cover (30) has a second exhaust port (31), and the second exhaust port (31) communicates the first chamber (111) and the second chamber (112); Wherein, the flow area of the first exhaust port (122) is smaller than the flow area of the first chamber (111), and / or the flow area of the second exhaust port (31) is smaller than the flow area of the second chamber (112).
2. The cover assembly according to claim 1, wherein, The pressureless passage (12) extends in the vertical direction, and the first exhaust port (122) is arranged facing the direction perpendicular to the extension of the pressureless passage (12).
3. The cover assembly according to claim 1 or 2, characterized in that, The second exhaust port (31) is located above the pressureless passage (12).
4. The cover assembly according to claim 1, wherein The shielding cover (30) has an exhaust portion (32) protruding from the top of the shielding cover (30). The exhaust portion (32) covers above the pressureless passage (12), and the second exhaust port (31) is arranged on the top and / or side wall of the exhaust portion (32).
5. The cover assembly according to claim 1, wherein, The distance between the first exhaust port (122) and the second exhaust port (31) in the vertical direction is d, where 5mm ≤ d ≤ 30mm.
6. The cover assembly according to claim 1, wherein, The cover body (10) includes a steam cover (13) and a steam seat (14). The steam cover (13) and the steam seat (14) cooperate to form the steam chamber (11). The steam cover (13) is arranged above the shielding cover (30). The first chamber (111) is formed between the steam seat (14) and the shielding cover (30), and the second chamber (112) is formed between the steam cover (13) and the shielding cover (30).
7. The cover assembly according to claim 6, wherein The steam cover (13) has a third exhaust port (131), and the flow area of the third exhaust port (131) is smaller than the flow area of the second chamber (112).
8. The cover assembly according to claim 6, characterized in that, Sealing members are provided between the shielding cover (30) and the steam cover (13), and between the shielding cover (30) and the steam seat (14).
9. The cover assembly according to claim 8, characterized in that, The bottom of the steam cover (13) is attached to the top of the steam base (14). A first sealing groove (33) and a second sealing groove (34) are provided on the outer periphery of the shielding cover (30). The first sealing groove (33) and the second sealing groove (34) are arranged at intervals in the vertical direction. The first sealing groove (33) corresponds to the inner wall of the steam cover (13), and the second sealing groove (34) corresponds to the inner wall of the steam base (14). Sealing members are provided in both the first sealing groove (33) and the second sealing groove (34).
10. A cooking appliance, characterized in that, The cooking appliance includes the lid assembly according to any one of claims 1 to 9.