Noise reduction box for cooking utensil

Abstract

The noise reduction box is fixed to the upper portion of a pot cover, a first exhaust cavity and a second exhaust cavity which are separated from each other are formed in the noise reduction box, the first exhaust cavity is used for being communicated with a float valve on the pot cover in a butt joint mode, and the second exhaust cavity is used for being communicated with an exhaust valve on the pot cover in a butt joint mode. The noise reduction box is further provided with a first exhaust port communicating with the first exhaust cavity and a second exhaust port communicating with the second exhaust cavity. According to the utility model, the first exhaust cavity and the second exhaust cavity are separated from each other, so that on one hand, air flows flowing out of the float valve and the exhaust valve cannot be mixed, and turbulent flow caused by collision of the two air flows is avoided; on the other hand, airflow and liquid sprayed out of the exhaust valve can only flow in the second exhaust cavity, cannot enter the first exhaust cavity, cannot reach the float valve and cannot enter the pot cover through the float valve.

Description

Technical Field

[0001] This utility model belongs to the field of kitchen appliance technology, specifically relating to a noise reduction box for cooking utensils. Background Technology

[0002] Many pressure cookers release pressure by venting. During the venting process, the rapid airflow generates noise. Therefore, some cookers have noise reduction boxes on the lid, which house the vent valve. The vent valve is concealed inside the noise reduction box, and numerous ribs inside the box increase the path of airflow, thus reducing noise and concealing the vent valve.

[0003] For pressure cookers, the lid is also equipped with a float valve. The float valve can float up and down under the pressure of the gas inside the pot, which is used to expel the cold air inside the pot before the pressure is built up. When the pressure is built up, the float valve rises and seals. Both the float valve and the exhaust valve are enclosed inside a noise reduction box, and they share the same cavity inside the noise reduction box for exhaust.

[0004] When the vent valve releases air, some of the airflow and liquid, such as rice water, will enter through the holes on the float valve due to the obstruction of the ribs inside the noise reduction box. This high-temperature airflow will heat the inner lid, causing the lid's temperature to rise. As a result, users are likely to be burned by the hot lid when opening it or performing other operations, leading to a poor user experience.

[0005] In addition, if liquids such as rice water enter the inside of the pot lid through the float valve, it will cause the inside of the pot lid to become stained and difficult to clean, and will eventually produce an odor. Furthermore, the viscous rice water will stick to the float valve, making it difficult for the float valve to move up and down smoothly, or even causing it to malfunction. Utility Model Content

[0006] This utility model provides a noise reduction box for cooking utensils to solve the problem that the exhaust valve and float valve share a cavity in the noise reduction box for exhaust, which makes it easy for the gas and liquid sprayed from the exhaust valve to reach the float valve, and then enter the inside of the pot lid or stick the float valve.

[0007] The technical solution adopted in this utility model is as follows:

[0008] A noise reduction box for cooking utensils is fixed to the upper part of a pot lid. The noise reduction box has a first exhaust chamber and a second exhaust chamber that are separated from each other. The first exhaust chamber is used to connect with a float valve on the pot lid, and the second exhaust chamber is used to connect with an exhaust valve on the pot lid. The noise reduction box also has a first exhaust port that connects to the first exhaust chamber and a second exhaust port that connects to the second exhaust chamber.

[0009] The noise reduction box for cooking utensils of this utility model also has the following additional technical features:

[0010] The noise reduction box has a surrounding rib inside, which forms a first exhaust chamber, and the outer side of the surrounding rib forms a second exhaust chamber, so that the second exhaust chamber surrounds at least part of the outer periphery of the first exhaust chamber.

[0011] The noise reduction box has a first exhaust end and a second exhaust end along its length. The first exhaust port is located on the top surface of the first exhaust end, a portion of the second exhaust port is located on the top surface of the second exhaust end, and a portion of the second exhaust port is located on the first exhaust end and surrounds the outer periphery of the first exhaust port.

[0012] The first exhaust chamber has a first exhaust section and a second exhaust section located above the first exhaust section in the vertical direction. The first exhaust section is connected to the float valve, and the second exhaust section is connected to the first exhaust port. The flow area of ​​the first exhaust section is larger than the flow area of ​​the second exhaust section.

[0013] The noise reduction box also contains a noise reduction cavity, which is located above and connected to the second exhaust cavity. The second exhaust port is connected to the noise reduction cavity, and the noise reduction cavity is equipped with flow-blocking ribs.

[0014] The flow-blocking rib is set on the top wall of the noise reduction cavity and extends downward. The bottom wall of the noise reduction cavity is provided with a downwardly recessed mating groove. The lower end of the flow-blocking rib extends into the mating groove, and a flow passage gap is formed between the two sides and the lower end of the flow-blocking rib and the groove wall of the mating groove.

[0015] The noise reduction cavity includes an air outlet cavity surrounded by baffles and a connecting cavity located outside the baffles. The connecting cavity is connected to the second exhaust cavity, and the second exhaust port is opened on the top wall of the air outlet cavity.

[0016] The noise reduction box includes a housing and a top cover on top of the housing. A first exhaust chamber and a second exhaust chamber are disposed in the housing, and a noise reduction cavity is formed between the top cover and the housing.

[0017] The noise reduction box includes a housing and a top cover on top of the housing. The top cover is detachably connected to the housing. One edge of the top cover and the housing is provided with a positioning groove, and the other edge of the top cover and the housing is provided with a positioning rib that is inserted into the positioning groove.

[0018] The top cover is provided with a fixing buckle, and the housing is provided with a matching buckle, so that the top cover and the housing are snapped together and fixed; or, an elastic seal is provided between the top cover and the housing, and the top cover and the housing press against the elastic seal to be fixed under the action of the friction of the elastic seal.

[0019] Due to the adoption of the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0020] 1. In this utility model, the noise reduction box has a first exhaust chamber connected to the float valve and a second exhaust chamber connected to the exhaust valve. The first and second exhaust chambers are separated from each other. On the one hand, this prevents the airflow from the float valve and the exhaust valve from mixing, ensuring their respective exhaust efficiency and avoiding turbulence caused by collisions between the two airflows, which would generate noise and affect exhaust efficiency. On the other hand, the airflow and liquid ejected from the exhaust valve can only flow in the second exhaust chamber and cannot enter the first exhaust chamber, thus preventing them from reaching the float valve and entering the pot lid through it. This avoids hot airflow flowing back into the pot lid, causing the lid to heat up and ensuring a better tactile feel when operating the pot lid, improving the user experience. It also prevents thick soup from flowing to the float valve and sticking it, ensuring the float valve moves reliably and smoothly.

[0021] 2. In a preferred embodiment of this utility model, the noise reduction box is provided with surrounding ribs, which form a first exhaust chamber and the outer side of the surrounding ribs form a second exhaust chamber, so that the second exhaust chamber surrounds at least a portion of the outer periphery of the first exhaust chamber. Since the float valve has a small exhaust volume and low airflow energy, a small-volume first exhaust chamber is sufficient to meet the requirements of smooth exhaust and noise reduction. However, the exhaust valve has a larger exhaust volume and higher airflow energy, so having the second exhaust chamber surround the first exhaust chamber at least partially increases the volume of the second exhaust chamber. The larger chamber helps reduce the kinetic energy of the airflow, allowing the gas to be discharged at a slower flow rate, thereby reducing the whistling sound of high-speed airflow and the sound of airflow collisions.

[0022] 3. In a preferred embodiment of this utility model, the first exhaust chamber has a first exhaust section and a second exhaust section located above the first exhaust section in a vertical direction. The first exhaust section is connected to the float valve, and the second exhaust section is connected to the first exhaust port. The flow area of ​​the first exhaust section is larger than that of the second exhaust section. The airflow discharged from the float valve passes through the first exhaust section and the second exhaust section sequentially and is discharged upwards. The first exhaust section has a larger flow area, which not only better collects the airflow flowing out of the float valve, but also, after the airflow ejected from the float valve enters the larger first exhaust section, the airflow rapidly diffuses within the first exhaust section due to the sudden increase in space, and the kinetic energy rapidly decreases, thereby causing the airflow pressure and flow velocity to decrease rapidly, thus achieving a noise reduction effect. As the airflow flows upwards into the second exhaust section, the flow area rapidly decreases, and the dispersed airflow re-converges within the second exhaust section, increasing the airflow pressure and flow velocity, thus discharging from the first exhaust port at a faster flow rate, ensuring exhaust efficiency.

[0023] 4. In a preferred embodiment of this utility model, a noise reduction chamber is further provided inside the noise reduction box. The noise reduction chamber is located above and communicates with the second exhaust chamber. The second exhaust port is connected to the noise reduction chamber, and a flow-blocking rib is provided inside the noise reduction chamber. Since the float valve has a small exhaust volume and low airflow energy, it will not generate significant noise during normal exhaust through the first exhaust chamber. Therefore, there is no need to add an additional noise reduction chamber, thus simplifying the internal structure of the noise reduction box. The exhaust valve has a large exhaust volume and high airflow energy, generating significant noise during exhaust. Therefore, the noise reduction chamber is positioned above the second exhaust chamber, allowing the airflow from the second exhaust chamber to enter the noise reduction chamber, be reduced in noise, and then be discharged. This effectively reduces the overall exhaust noise of the cooking appliance while simplifying the internal structure of the noise reduction box, reducing processing difficulty, and saving costs.

[0024] 5. In a preferred embodiment of this utility model, the flow-blocking ribs are disposed on the top wall of the noise reduction cavity and extend downward. The bottom wall of the noise reduction cavity is provided with a downwardly recessed mating groove. The lower end of the flow-blocking rib extends into the mating groove, and a flow gap is formed between the two sides and the lower end of the flow-blocking rib and the groove wall of the mating groove. The airflow in the noise reduction cavity flows between the flow-blocking ribs through the flow gap. Specifically, after the airflow enters the noise reduction cavity from the second exhaust cavity, it flows laterally in the noise reduction cavity, and then flows downward into the mating groove due to the obstruction of the side of the flow-blocking rib. After passing through the flow gap between the side of the flow-blocking rib and the side wall of the mating groove, and between the bottom end of the flow-blocking rib and the bottom wall of the mating groove, it passes over the flow-blocking rib and reaches the other side of the flow-blocking rib. After multiple reversals, it is discharged from the second exhaust port. After multiple reversals, the energy of the airflow is reduced, and the sound emitted during the flow is greatly reduced, thereby achieving a noise reduction effect. Attached Figure Description

[0025] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0026] Figure 1 This is a cross-sectional view of the pot lid structure according to one embodiment of the present invention;

[0027] Figure 2 This is a cross-sectional view of a noise reduction box according to one embodiment of the present invention;

[0028] Figure 3 for Figure 2 A magnified view of area A in the middle;

[0029] Figure 4 This is a schematic diagram of the shell structure according to one embodiment of the present invention;

[0030] Figure 5This is a schematic diagram of the structure of the top cover according to one embodiment of the present invention.

[0031] in;

[0032] 1. Housing; 11. First exhaust chamber; 111. First exhaust section; 112. Second exhaust section; 12. Second exhaust chamber; 13. Surrounding rib; 14. Mating groove; 141. Flow gap; 15. Mating buckle; 16. Exhaust area; 17. Vent hole; 18. Positioning groove;

[0033] 2. Top cover; 21. First exhaust port; 22. Second exhaust port; 23. Noise reduction chamber; 231. Connecting chamber; 232. Exhaust chamber; 24. Baffle rib; 25. Fixing buckle; 26. Positioning rib; 27. Sealing groove; 28. First exhaust end; 29. ​​Second exhaust end;

[0034] 3. Seals;

[0035] 4. Pot lid; 41. Exhaust valve; 411. Exhaust pipe; 412. Counterweight; 42. Float valve. Detailed Implementation

[0036] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0037] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0038] Furthermore, it should be understood in the description of this utility model that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0039] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "aspect," or "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0041] like Figure 1 , Figure 2 As shown, a noise reduction box for cooking utensils is fixed to the upper part of a pot lid 4. The noise reduction box has a first exhaust chamber 11 and a second exhaust chamber 12 that are separated from each other. The first exhaust chamber 11 is used to connect with the float valve 42 on the pot lid 4, and the second exhaust chamber 12 is used to connect with the exhaust valve 41 on the pot lid 4. The noise reduction box also has a first exhaust port 21 that connects to the first exhaust chamber 11 and a second exhaust port 22 that connects to the second exhaust chamber 12.

[0042] In this invention, the noise reduction box has a first exhaust chamber 11 connected to the float valve 42 and a second exhaust chamber 12 connected to the exhaust valve 41. The first exhaust chamber 11 and the second exhaust chamber 12 are separated from each other. On the one hand, this prevents the airflow from the float valve 42 and the exhaust valve 41 from mixing, ensuring their respective exhaust efficiency and preventing turbulence caused by collisions between the two airflows, which would generate noise and affect exhaust efficiency. On the other hand, the airflow and liquid ejected from the exhaust valve 41 can only flow in the second exhaust chamber 12 and cannot enter the first exhaust chamber 11, thus preventing them from reaching the float valve 42 and entering the pot lid 4 through it. This prevents hot airflow from flowing back into the pot lid 4, causing the pot lid 4 to heat up, ensuring a better tactile experience for the user when operating the pot lid 4, and also prevents thick soup from flowing to the float valve 42 and sticking it, ensuring the float valve 42 moves reliably and smoothly.

[0043] It is understandable that, such as Figure 1 As shown, both the float valve 42 and the vent valve 41 are located on the top surface of the pot lid 4. The top surface of the pot lid 4 has a first mounting port for installing the float valve 42 and a second mounting port for installing the vent valve 41. The first mounting port is positioned higher than the second mounting port to further reduce the risk of liquid overflowing from the vent valve 41 flowing to the float valve 42. Figure 1As shown, the exhaust valve 41 includes an exhaust valve 41 and a counterweight 412 placed at the top of the exhaust pipe 411. The counterweight 412 blocks the exhaust pipe 411. When exhausting, the exhaust assembly lifts the counterweight 412, causing it to break the seal from the exhaust pipe 411.

[0044] Preferably, the noise reduction box is detachably fixed to the top surface of the pot lid 4 so that the user can remove the noise reduction box and clean the inside of the noise reduction box.

[0045] It should be noted that this utility model does not limit the arrangement of the first exhaust chamber 11 and the second exhaust chamber 12. In a preferred embodiment, such as... Figure 1 , Figure 2 , Figure 3 As shown, the noise reduction box is provided with a surrounding rib 13, which surrounds the first exhaust cavity 11, and the outer side of the surrounding rib 13 forms the second exhaust cavity 12, so that the second exhaust cavity 12 surrounds at least part of the outer periphery of the first exhaust cavity 11.

[0046] The surrounding ribs 13 form a first exhaust chamber 11, and the outer side of the surrounding ribs 13 forms a second exhaust chamber 12. The second exhaust chamber 12 at least partially surrounds the first exhaust chamber 11. Since the exhaust volume of the float valve 42 is small and the kinetic energy of the air is small, the first exhaust chamber 11 with a small volume can meet the requirements of smooth exhaust and noise reduction. However, the exhaust volume of the exhaust valve 41 is large and the kinetic energy of the air is large. Therefore, by having the second exhaust chamber 12 at least partially surround the first exhaust chamber 11, the volume of the second exhaust chamber 12 can be further increased. The large volume chamber helps to reduce the kinetic energy of the airflow, so that the gas is discharged at a slower flow rate, thereby reducing the whistling sound generated by the high-speed airflow and the sound of airflow collision.

[0047] like Figure 1 As shown, a sealing element 3 is provided on the outer periphery of the float valve 42, and the lower end of the surrounding rib 13 abuts against the sealing element 3 to seal it, so as to isolate the first exhaust chamber 11 and the second exhaust element.

[0048] In other embodiments, the first exhaust chamber 11 and the second exhaust chamber 12 may also be arranged in other ways, for example, the noise reduction box has baffles inside, which divide the noise reduction box into the first exhaust chamber 11 and the second exhaust chamber 12 arranged side by side.

[0049] Preferably, such as Figure 5 As shown, the noise reduction box has a first exhaust end 28 and a second exhaust end 29 along its length. The first exhaust port 21 is located on the top surface of the first exhaust end 28, and a portion of the second exhaust port 22 is located on the top surface of the second exhaust end 29. The portion of the second exhaust port 22 is located on the first exhaust end 28 and surrounds the outer periphery of the first exhaust port 21.

[0050] Specifically, such as Figure 1As shown, the float valve 42 is located below the first exhaust end 28, and the exhaust valve 41 is located below the second exhaust end 29. After the airflow in the exhaust valve 41 enters the second exhaust chamber 12, it diffuses within the chamber. Part of the airflow is then discharged through the second exhaust port 22 of the upper second exhaust end 29, while the remaining airflow flows to the first exhaust end 28 and is discharged from the second exhaust port 22. Because the exhaust valve 41 has a large exhaust volume, the noise reduction box is fully utilized during exhaust, with exhaust occurring from both ends. This increases the number of second exhaust ports 22, improving exhaust efficiency, and also achieves dispersed exhaust, helping to reduce the kinetic energy of the airflow, improve noise reduction, and avoid noise generation from concentrated exhaust at a single location.

[0051] Specifically, such as Figure 5 As shown, some of the second exhaust ports 22 extend laterally in a long strip shape, and the second exhaust ports 22 of the first exhaust end 28 and the second exhaust end 29 are respectively arranged in a ring and rotated around the center of the ring, so that while accelerating the airflow out, each second exhaust port 22 forms an aesthetically pleasing shape and improves the appearance quality.

[0052] As a preferred embodiment of this utility model, such as Figure 2 As shown, the first exhaust chamber 11 has a first exhaust section 111 and a second exhaust section 112 located above the first exhaust section 111 in the vertical direction. The first exhaust section 111 is connected to the float valve 42, and the second exhaust section 112 is connected to the first exhaust port 21. The flow area of ​​the first exhaust section 111 is larger than the flow area of ​​the second exhaust section 112.

[0053] The airflow discharged from the float valve 42 passes sequentially through the first exhaust section 111 and the second exhaust section 112 before being discharged upwards. The first exhaust section 111 has a larger flow area, which not only better collects the airflow from the float valve 42, but also causes the airflow to rapidly diffuse within the larger first exhaust section 111 due to the sudden increase in space. This rapid decrease in kinetic energy leads to a rapid reduction in air pressure and flow velocity, thus achieving a noise reduction effect. As the airflow flows upwards into the second exhaust section 112, the flow area decreases rapidly, and the dispersed airflow re-converges within the second exhaust section 112. The air pressure and flow velocity increase, allowing the airflow to be discharged from the first exhaust port 21 at a faster speed, ensuring exhaust efficiency.

[0054] Specifically, such as Figure 2 , Figure 5 As shown, a sealing groove 27 is provided on the outer periphery of the first exhaust port 21, and the top of the second exhaust section 112 is inserted into the sealing groove 27.

[0055] In a preferred embodiment, such as Figure 2 , Figure 3 As shown, a noise reduction cavity 23 is also provided inside the noise reduction box. The noise reduction cavity 23 is located above the second exhaust cavity 12 and is connected to the second exhaust cavity 12. The second exhaust port 22 is connected to the noise reduction cavity 23. A flow-blocking rib 24 is provided inside the noise reduction cavity 23.

[0056] Because the float valve 42 has a small exhaust volume and low airflow energy, it does not generate significant noise during normal exhaust through the first exhaust chamber 11. Therefore, there is no need to add an additional noise reduction chamber 23, thus simplifying the internal structure of the noise reduction box. The exhaust valve 41 has a larger exhaust volume and higher airflow energy, generating significant noise during exhaust. Therefore, the noise reduction chamber 23 is positioned above the second exhaust chamber 12, allowing the airflow from the second exhaust chamber 12 to enter the noise reduction chamber 23, where it is reduced in noise before being discharged. This effectively reduces the overall exhaust noise of the cooking appliance while simplifying the internal structure of the noise reduction box, reducing processing difficulty, and saving costs.

[0057] It should be noted that the present invention does not limit the location or direction of the flow-blocking ribs 24. As long as they can block the airflow, causing the airflow to deflect or turn multiple times within the noise reduction cavity 23, thus extending the airflow path and reducing the kinetic energy of the airflow, it is acceptable.

[0058] Furthermore, such as Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the flow-blocking rib 24 is disposed on the top wall of the noise reduction cavity 23 and extends downward. The bottom wall of the noise reduction cavity 23 is provided with a downwardly recessed mating groove 14. The lower end of the flow-blocking rib 24 extends into the mating groove 14, and a flow gap 141 is formed between the two sides and the lower end of the flow-blocking rib 24 and the groove wall of the mating groove 14.

[0059] The airflow within the noise reduction cavity 23 flows between the flow-blocking ribs 24 through the flow gap 141. Specifically, as shown... Figure 3 As shown, after the airflow enters the noise reduction chamber 23 from the second exhaust chamber 12, it flows laterally in the noise reduction chamber 23. Then, it is blocked by the side of the flow-reducing rib 24 and flows downward into the mating groove 14. After passing through the flow gap 141 between the side of the flow-reducing rib 24 and the side wall of the mating groove 14, and between the bottom end of the flow-reducing rib 24 and the bottom wall of the mating groove 14, it passes over the flow-reducing rib 24 and reaches the other side of the flow-reducing rib 24. After multiple reversals, it is discharged from the second exhaust port 22. After multiple reversals, the energy of the airflow is reduced, and the sound emitted during the flow is also greatly reduced, thereby achieving a noise reduction effect.

[0060] Specifically, such as Figure 4 , Figure 5As shown, the noise reduction cavity 23 includes an air outlet cavity 232 surrounded by a baffle 24, and a connecting cavity 231 located outside the baffle 24. The connecting cavity 231 is connected to the second exhaust cavity 12, and the second exhaust port 22 is opened on the top wall of the air outlet cavity 232.

[0061] like Figure 5 As shown, the noise reduction box has a first exhaust end 28 and a second exhaust end 29 along its length. Both the first exhaust end 28 and the second exhaust end 29 have a second exhaust port 22. Baffle ribs 24 are arranged around the outer periphery of the second exhaust ports 22 at both ends, forming two air outlet chambers 232. Figure 4 As shown, the mating groove 14 on the bottom wall of the noise reduction cavity 23 also extends in a ring shape to enclose the two exhaust areas 16 to cooperate with the flow-blocking rib 24 to form an exhaust cavity 232. The bottom wall of the noise reduction cavity 23 forms a connecting cavity 231 in the area between the two exhaust areas 16, where a vent hole 17 is provided to connect the second exhaust cavity 12 and the noise reduction cavity 23. After the airflow in the second exhaust cavity 12 enters the connecting cavity 231 through the vent hole 17, it passes through the flow gap 141 between the flow-blocking rib 24 and the mating groove 14 to the sides and enters the exhaust cavity 232, and is discharged from the second exhaust port 22.

[0062] It should be noted that this utility model does not limit the structure of the noise-canceling box. In one embodiment, the noise-canceling box is a one-piece structure. In another embodiment, such as... Figure 2 , Figure 4 , Figure 5 As shown, the noise reduction box includes a housing 1 and an upper cover 2 covering the top of the housing 1. A first exhaust chamber 11 and a second exhaust chamber 12 are disposed in the housing 1, and a noise reduction chamber 23 is formed between the upper cover 2 and the housing 1.

[0063] Specifically, such as Figure 2 , Figure 4 , Figure 5 As shown, the flow-blocking rib 24 is provided on the upper cover 2, and the mating groove 14 is provided on the housing 1. The two are inserted and mated to form a flow gap 141.

[0064] Preferably, the top cover 2 and the housing 1 are detachably connected to facilitate cleaning of the noise reduction cavity 23 by the user. Figure 4 , Figure 5 As shown, one of the top cover 2 and the shell 1 has a positioning groove 18 on its edge, and the other has a positioning rib 26 that is inserted into and cooperates with the positioning groove 18.

[0065] The positioning accuracy of the upper cover 2 and the housing 1 is improved by the cooperation of the positioning groove 18 and the positioning rib 26, ensuring the sealing reliability of each component, as well as the precise matching position of the flow-blocking rib 24 and the mating groove 14, ensuring the existence and size of the flow gap 141.

[0066] In one embodiment, such as Figure 4 , Figure 5 As shown, the upper cover 2 has a positioning rib 26 on its edge, which extends circumferentially along the upper cover 2, and the top surface of the housing 1 has a positioning groove 18. Of course, the positioning groove 18 can also be provided on the upper cover 2, and the positioning rib 26 can be provided on the housing 1 accordingly; this is not limited here.

[0067] It should be noted that this utility model does not limit the method of fixing the top cover 2 and the shell 1, and includes, but is not limited to, the situations listed in the following embodiments:

[0068] Example 1: In this example, as Figure 3 , Figure 4 , Figure 5 As shown, the upper cover 2 is provided with a fixing buckle 25, and the housing 1 is provided with a mating buckle 15, so that the upper cover 2 and the housing 1 are snapped together and fixed. Specifically, as shown... Figure 4 , Figure 5 As shown, the upper shell is provided with a flow-blocking rib 24, the shell 1 is provided with a mating groove 14, the fixing buckle 25 is provided on the inner side wall of the flow-blocking rib 24, and the mating buckle 15 is provided on the inner side wall of the mating groove 14. Alternatively, the fixing buckle 25 can be provided on the outer side wall of the flow-blocking rib 24, and the mating buckle 15 can be provided on the outer side wall of the mating groove 14.

[0069] In addition, such as Figure 4 , Figure 5 As shown, both the flow-blocking rib 24 and the mating groove 14 are annular structures. Multiple fixing buckles 25 are arranged at intervals along the circumference of the flow-blocking rib 24, and the mating buckles 15 are set one-to-one with the fixing buckles 25.

[0070] Example 2: In this example, an elastic seal is provided between the upper cover 2 and the housing 1. The upper cover 2 and the housing 1 press against the elastic seal to fix it under the action of the friction of the elastic seal.

[0071] In this embodiment, the elastic seal is pressed by the upper cover 2 and the shell 1, and the friction of the elastic seal is used to fix the two together, which further reduces the assembly difficulty, improves the assembly convenience, and can improve the sealing effect by utilizing the elastic seal.

[0072] Of course, the shell 1 or the top cover 2 can also be made of elastic material, and then the two can be fixed by interference fit, which is not limited here.

[0073] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0074] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0075] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A noise-reducing box for a cooking utensil, said noise-reducing box being fixed to the upper part of a pot lid, characterized in that, The noise reduction box has a first exhaust chamber and a second exhaust chamber that are separated from each other. The first exhaust chamber is used to connect with the float valve on the pot lid, and the second exhaust chamber is used to connect with the exhaust valve on the pot lid. The noise reduction box also has a first exhaust port that connects to the first exhaust chamber and a second exhaust port that connects to the second exhaust chamber.

2. The noise reduction box for cooking utensils according to claim 1, characterized in that, The noise reduction box is provided with a surrounding rib, which surrounds the first exhaust cavity, and the outer side of the surrounding rib forms the second exhaust cavity, so that the second exhaust cavity surrounds at least part of the outer periphery of the first exhaust cavity.

3. The noise reduction box for cooking utensils according to claim 2, characterized in that, The noise reduction box has a first exhaust end and a second exhaust end along its length. The first exhaust port is located on the top surface of the first exhaust end, a portion of the second exhaust port is located on the top surface of the second exhaust end, and a portion of the second exhaust port is located on the first exhaust end and surrounds the outer periphery of the first exhaust port.

4. The noise reduction box for cooking utensils according to claim 1, characterized in that, The first exhaust chamber has a first exhaust section and a second exhaust section located above the first exhaust section in the vertical direction. The first exhaust section is connected to the float valve, and the second exhaust section is connected to the first exhaust port. The flow area of ​​the first exhaust section is larger than the flow area of ​​the second exhaust section.

5. The noise reduction box for cooking utensils according to claim 1, characterized in that, The noise reduction box is also provided with a noise reduction cavity, which is located above and connected to the second exhaust cavity. The second exhaust port is connected to the noise reduction cavity, and the noise reduction cavity is provided with flow-blocking ribs.

6. The noise reduction box for cooking utensils according to claim 5, characterized in that, The flow-blocking rib is disposed on the top wall of the noise reduction cavity and extends downward. The bottom wall of the noise reduction cavity is provided with a downwardly recessed mating groove. The lower end of the flow-blocking rib extends into the mating groove. A flow passage gap is formed between the two sides and the lower end of the flow-blocking rib and the groove wall of the mating groove.

7. The noise reduction box for cooking utensils according to claim 6, characterized in that, The noise reduction cavity includes an air outlet cavity surrounded by the flow-blocking ribs, and a connecting cavity located outside the flow-blocking ribs. The connecting cavity is connected to the second exhaust cavity, and the second exhaust port is opened on the top wall of the air outlet cavity.

8. The noise reduction box for cooking utensils according to claim 5, characterized in that, The noise reduction box includes a housing and a top cover on the top of the housing. The first exhaust chamber and the second exhaust chamber are disposed in the housing, and the noise reduction cavity is formed between the top cover and the housing.

9. The noise reduction box for cooking utensils according to claim 1, characterized in that, The noise reduction box includes a housing and an upper cover on top of the housing. The upper cover is detachably connected to the housing. One edge of the upper cover and the housing is provided with a positioning groove, and the other edge of the upper cover and the housing is provided with a positioning rib that is inserted into the positioning groove.

10. The noise reduction box for cooking utensils according to claim 9, characterized in that, The upper cover is provided with a fixing buckle, and the housing is provided with a mating buckle, so that the upper cover and the housing are locked together and fixed; or... An elastic seal is provided between the top cover and the housing, and the top cover and the housing press against the elastic seal to fix it in place under the friction of the elastic seal.

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