Noise reduction box for cooking utensil

Abstract

The noise reduction box is fixed to the upper portion of a pot cover, the noise reduction box comprises a shell and a blocking piece arranged in the shell, the interior of the shell is divided into at least two noise reduction cavities arranged in the vertical direction through the blocking piece, and the blocking piece is of a structure made of flexible materials. The projection of at least partial area of the barrier towards the pot cover covers an air outlet of the exhaust valve, so that airflow exhausted by the exhaust valve is exhausted after colliding with the barrier. The blocking piece is used for blocking the air flow, so that the air flow turns after colliding with the blocking piece so as to repeatedly turn and flow in the noise reduction box, the air flow path is lengthened, the air flow kinetic energy is reduced, and the effect of reducing the flowing noise of the air flow is achieved. Meanwhile, the blocking piece is made of a flexible material and can deform under the pushing of the airflow, so that the contact between the blocking piece and the airflow is softer, and the situation that the blocking piece and the airflow violently collide to generate large collision noise is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of kitchen appliances, and particularly relates to a noise reduction box for a cooking appliance. Background Art

[0002] In some cooking appliances, such as rice cookers, especially in electric pressure cookers, a noise reduction box is provided at the exhaust valve of the pot lid. The noise reduction box covers the outside of the exhaust valve (such as a weight), which can not only block the exhaust valve and improve the overall beauty of the cooking appliance, but also reduce the noise of the gas ejected from the exhaust valve and lower the noise generated during the exhaust process.

[0003] A noise reduction cavity for noise reduction treatment of air flow is arranged inside the noise reduction box. In order to further lengthen the flow path of the air flow and weaken the kinetic energy during the air flow process to achieve the effect of reducing noise, multiple noise reduction cavities are arranged inside some noise reduction boxes, so that the air flow flows back and forth inside the noise reduction box to cut the kinetic energy of the air flow and reduce the noise.

[0004] However, in the prior art, the housing of the noise reduction box and the baffle ribs for blocking air flow inside are usually made of hard structures such as plastics. When the air flow collides with the housing or the baffle ribs, especially when the high-pressure and high-kinetic-energy air flow ejected from the exhaust valve of the pot lid collides with the baffle rib structure inside the housing, a violent collision sound will be generated, and the air flow will vibrate, thereby increasing the generation of noise. At the same time, along with the collision, the air flow will change direction, and the violent collision will make the direction change of the air flow relatively rigid, and thus a large whistling sound will be generated when the air flow changes direction. In this way, the noise reduction effect of the existing noise reduction box is not ideal, and a large noise will still be emitted inside the noise reduction box during the exhaust process, affecting the use experience.

[0005] In addition, although some noise reduction boxes are provided with silica gel parts inside. For example, Chinese Patent CN213248540U discloses an exhaust box and a cooking appliance having the same, in which a silica gel part is arranged in the space formed between the first exhaust box and the second exhaust box. The first exhaust box has an air inlet, the second exhaust box has an air outlet, and the air inlet and the air outlet form an exhaust air flow path, and the exhaust air flow path is a return flow path. When exhausting with a weight, the steam enters from the air inlet, consumes the gas energy through the return flow inside, reduces the noise, and finally discharges from the air outlet, which can solve the problem of excessive exhaust noise of the pressure cooker to a certain extent. However, the silica gel part is fixed in the narrow space between two adjacent exhaust boxes and is not detachable, so that the flow space between the noise reduction cavities is limited. Therefore, the noise reduction amount is limited, and food residues are easy to enter the inside of the noise reduction box through the exhaust valve. The greatly reduced flow space causes the food residues to not be able to smoothly discharge from the exhaust port of the noise reduction box, so they accumulate inside the noise reduction box and cannot be cleaned well. Summary of the Utility Model

[0006] The utility model provides a noise reduction box for a cooking appliance, aiming to solve the problems in the prior art that the noise reduction box and the internal rib therein are of a rigid structure, and during the exhaust process, violent collision occurs with the high-speed flowing air flow to generate noise, while setting a silica gel part is likely to block the air flow channel inside the noise reduction box, affecting the exhaust efficiency and being inconvenient for cleaning.

[0007] The technical solution adopted by the utility model is as follows:

[0008] A noise reduction box for a cooking appliance, the noise reduction box is fixed to the upper part of the pot lid. The noise reduction box includes a housing, and a barrier member disposed inside the housing. The barrier member divides the interior of the housing into at least two noise reduction chambers arranged in the up-down direction. The barrier member is a structure made of a flexible material, and at least part of the area of the barrier member projects to cover the air outlet of the exhaust valve towards the pot lid, so that the air flow discharged from the exhaust valve collides with the barrier member and then is discharged.

[0009] The noise reduction box of the utility model further has the following additional technical features:

[0010] The barrier member is in interference fit with the housing, so that the barrier member is detachably fixed inside the housing.

[0011] The barrier member is provided with a holding part protruding towards the inside of the noise reduction chamber. There is a holding space between the holding part and the inner wall of the housing.

[0012] Inside the housing, there is a first baffle and a second baffle located above the first baffle. The first baffle is provided with an installation opening, and the second baffle is provided with a matching opening. The barrier member is respectively matched with the installation opening and the matching opening to form a first noise reduction chamber below the first baffle, a second noise reduction chamber between the first baffle and the second baffle, and a third noise reduction chamber above the second baffle inside the housing.

[0013] The first baffle is provided with a first air passage opening communicating the first noise reduction chamber and the second noise reduction chamber. The first air passage opening surrounds the outer periphery of the barrier member. The barrier member includes a fixing part matched with the installation opening, and a sealing part extending upward and matched with the matching opening. The sealing part is provided with a second air passage opening communicating the second noise reduction chamber and the third noise reduction chamber.

[0014] The sealing part has a top air chamber communicating with the third noise reduction chamber. A plurality of connecting ribs are arranged inside the top air chamber. The connecting ribs divide the top air chamber into a plurality of air passage channels. The second air passage openings are multiple and are correspondingly communicated with at least part of the air passage channels.

[0015] Inside the housing, there is a first noise reduction chamber below the barrier member and a second noise reduction chamber above the barrier member. The barrier member has a barrier area corresponding to the exhaust valve of the pot lid and an exhaust area arranged in a dislocation manner with the barrier area. The exhaust area is provided with an air passage opening communicating the first noise reduction chamber and the second noise reduction chamber.

[0016] The barrier member is provided with a convex portion that bulges upward. The convex portion forms a noise reduction cavity on the lower side of the barrier member, and the noise reduction cavity is arranged corresponding to the air outlet of the exhaust valve of the pot lid.

[0017] The noise reduction box further includes a cover body. There is an assembly gap between the cover body and the housing, and the air flow in the noise reduction cavity is discharged through the assembly gap.

[0018] A diversion inclined surface is provided at the top of the housing. The cover body and the diversion inclined surface cooperate to form an exhaust passage. The diversion inclined surface is provided with diversion ribs so that the outlet of the exhaust passage faces upward.

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

[0020] 1. In the present utility model, the barrier member is arranged inside the housing of the noise reduction box, dividing the interior of the housing into at least two noise reduction cavities arranged vertically. The barrier member is used to block the air flow, causing the air flow to deflect after colliding with the barrier member, so as to flow repeatedly and turn inside the noise reduction box, thereby lengthening the air flow path and reducing the kinetic energy of the air flow, so as to achieve the effect of reducing the noise of air flow. At the same time, the barrier member is made of a flexible material. When the high-speed air flow contacts the barrier member, the barrier member can deform under the push of the air flow, making the contact between the barrier member and the air flow softer, and avoiding large collision noises caused by violent collisions between the barrier member and the air flow. At the same time, after the air flow collides with the barrier member, it can deflect under the guiding action of the barrier member, and the guiding of the barrier member to the air flow is also softer, enabling the air flow to complete the change of flow direction in a smoother and softer manner, thereby reducing the whistling sound generated during the air flow turning process. In this way, the noise generated by the air flow and collision inside the noise reduction box can be effectively reduced, improving the use experience.

[0021] In addition, when the air flow in the pot is discharged from the exhaust valve, the pressure and kinetic energy are the greatest, and the impact force of the air flow here is also relatively large. Therefore, the high-speed air flow colliding with other objects here is more likely to generate noise. By arranging at least part of the area of the barrier member corresponding to the air outlet of the exhaust valve on the pot lid, the high-speed air flow ejected from the air outlet of the exhaust valve will preferentially contact and collide with the barrier member. The barrier member is flexible, which can not only relieve the noise generated when colliding with the high-speed air flow, but also effectively reduce the kinetic energy and impact force of the air flow, reduce the flow rate of the air flow, and reduce the noise generated during the subsequent flow of the air flow.

[0022] 2. As a preferred embodiment of the present invention, the barrier is interference-fitted with the shell so that the barrier can be detachably fixed inside the shell. The barrier is detachably fixed inside the shell, so that the user can remove the barrier and clean the barrier and the inside of the shell, thereby ensuring the cleanliness of the air flow channel inside the noise reduction box and preventing dirt from accumulating inside the shell or on the barrier. In addition, the barrier is fixed by interference fit, making the assembly and disassembly of the barrier simpler and more convenient, and there is no need to set a complex fixing structure on the shell and the barrier, reducing the processing difficulty and production cost.

[0023] 3. As a preferred embodiment of the utility model, the first baffle is provided with a first air port connecting the first noise reduction chamber and the second noise reduction chamber, and the first air port surrounds the outer periphery of the barrier, and the barrier includes a fixing portion that cooperates with the mounting port, and a sealing portion that extends upward and cooperates with the matching port, and the sealing portion is provided with a second air port connecting the second noise reduction chamber and the third noise reduction chamber. The first air port surrounds the outer periphery of the barrier, so that the airflow in the first noise reduction chamber flows from the center to the outside, and then surges from the outer peripheral side into the second noise reduction chamber, and the second air port is provided on the side wall of the sealing portion, so the airflow in the second noise reduction chamber needs to pass through the second air port horizontally to enter the third noise reduction chamber above. In this way, the first air port and the second air port have different directions, so that the airflow needs to turn when passing through the first air port and the second air port, thereby further improving the noise reduction effect. In addition, the second air port is located on the sealing portion, and the sealing portion is a flexible structure, so it can further reduce the noise emitted when the airflow passes through the second air port.

[0024] 4. As a preferred embodiment of the present invention, the sealing part has a top air chamber connected to the third noise reduction chamber, and a plurality of connecting ribs are arranged in the top air chamber, which divide the top air chamber into a plurality of air passages, and the second air ports are multiple and correspondingly connected to at least part of the air passages. The airflow in the second noise reduction chamber enters each air passage through the plurality of second air ports, so that the airflow collected in the second noise reduction chamber is dispersed into a plurality of small-flow airflows entering the third noise reduction chamber, so as to reduce the airflow passing through each second air port, reduce the noise generated when the large-flow airflow flows, and the velocity of the airflow is further reduced after the airflow is dispersed, thereby improving the noise reduction effect.

[0025] 5. As a preferred embodiment of the utility model, the barrier is provided with a convex portion that bulges upward, and the convex portion forms a noise reduction cavity on the lower side of the barrier, and the noise reduction cavity is arranged corresponding to the outlet of the exhaust valve of the pot cover. After the noise reduction box is assembled on the pot cover, some parts of the exhaust valve on the pot cover, such as the weight, are accommodated in the chamber of the lowest layer of the noise reduction box. After the airflow in the pot is ejected from the outlet of the exhaust valve, more of it will flow upward into the noise reduction cavity, and the noise reduction cavity is concave upward, so it can not only buffer the airflow to a certain extent and reduce the kinetic energy of the airflow, but also the noise reduction cavity only has an opening for airflow to enter at the position corresponding to the weight at the bottom, and other areas are closed, so the airflow cannot be directly ejected upward from the noise reduction cavity, but after being buffered in the noise reduction cavity, it turns back and flows downward, and then disperses and flows back to the bottom of the barrier from the opening below the noise reduction cavity, so that the airflow that is gathered together is dispersed, so that the gathered airflow at the noise reduction cavity is divided into multiple smaller airflows to the outside, and then continues to flow upward and be discharged. In this way, by setting up the noise reduction cavity, the airflow ejected from the exhaust valve outlet can not only be buffered in the noise reduction cavity and change its flow direction, thereby extending the flow path of the airflow, but also the airflow can be dispersed into multiple small-flow airflows when flowing out of the noise reduction cavity, thereby greatly reducing the noise emitted during the flow of the airflow and improving the noise reduction effect and user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0027] Figure 1 This is a structural explosion view of a pot cover and a noise reduction box in one embodiment of the utility model;

[0028] Figure 2 This is a cross-sectional view of a pot cover in one embodiment of the utility model;

[0029] Figure 3 for Figure 2 A magnified view of area A, where arrows indicate the direction of air flow;

[0030] Figure 4 This is a schematic structural diagram of a bottom shell in one embodiment of the utility model;

[0031] Figure 5 This is a schematic diagram of the structure of the upper shell in one embodiment of the utility model;

[0032] Figure 6 This is a schematic structural diagram of a barrier member in one embodiment of the utility model;

[0033] Figure 7 forFigure 6 A schematic diagram of the structure of the middle barrier from another perspective;

[0034] Figure 8 for Figure 6 a cross-sectional view of the middle barrier;

[0035] Figure 9 This is a schematic diagram of the structure of a noise reduction box in one embodiment of the utility model;

[0036] Figure 10 for Figure 9 A cross-sectional view of the middle noise reduction box;

[0037] Figure 11 This is a schematic structural diagram of a housing in another embodiment of the present invention;

[0038] Figure 12 This is a schematic structural diagram of a barrier member in another embodiment of the present invention;

[0039] Figure 13 for Figure 12 A schematic diagram of the structure of the middle barrier from another perspective;

[0040] Figure 14 for Figure 12 a cross-sectional view of the middle barrier;

[0041] Figure 15 It is a cross-sectional view of a noise reduction box in another embodiment of the present invention, wherein arrows indicate the direction of airflow;

[0042] Figure 16 The figure is a schematic structural diagram of a noise reduction box in another embodiment of the present invention.

[0043] in:

[0044] 1 housing; 11 bottom housing; 111 first baffle; 112 first air outlet; 113 mounting opening; 12 upper housing; 121 second baffle; 122 matching opening; 123 flow guide slope; 124 flow guide convex rib; 13 first noise reduction chamber; 14 second noise reduction chamber; 15 third noise reduction chamber; 16 exhaust passage; 17 through hole; 18 mounting bracket; 181 mounting hole;

[0045] 2. Cover body;

[0046] 3 barrier; 31 noise reduction cavity; 32 second air outlet; 33 fixing portion; 34 sealing portion; 35 gripping portion; 36 air passage; 37 connecting rib; 38 barrier area; 39 exhaust area; 391 air guide column;

[0047] 4 pot cover; 41 exhaust pipe; 42 weight; 421 air outlet; 43 operating handle. DETAILED DESCRIPTION

[0048] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in the form of examples in conjunction with the accompanying drawings.

[0049] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0050] In addition, in the description of the present invention, it should be understood that the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0051] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "implementation method", "example", "one embodiment", "example" or "specific example" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0053] like Figure 1 , Figure 2 , Figure 3As shown, a noise reduction box for a cooking utensil is fixed to the upper part of a pot cover 4. The noise reduction box includes a shell 1 and a barrier 3 arranged in the shell 1. The barrier 3 divides the interior of the shell 1 into at least two noise reduction chambers arranged in an up and down direction. The barrier 3 is a structure made of a flexible material. The projection of at least a portion of the barrier 3 toward the pot cover 4 covers the air outlet 421 of the exhaust valve, so that the airflow discharged from the exhaust valve collides with the barrier 3 and is discharged.

[0054] In the utility model, the barrier 3 is arranged inside the noise reduction box housing 1, and the housing 1 is divided into at least two noise reduction chambers arranged up and down, so that the barrier 3 is used to block the airflow, so that the airflow collides with the barrier 3 and then turns, so as to repeatedly turn and flow inside the noise reduction box, thereby lengthening the airflow path and reducing the kinetic energy of the airflow, thereby achieving the effect of reducing the noise of the airflow flow. At the same time, the barrier 3 is a flexible material. When the high-speed airflow contacts the barrier 3, the barrier 3 can be deformed under the push of the airflow, thereby making the contact between the barrier 3 and the airflow softer, avoiding the barrier 3 and the airflow from violently colliding and generating a large collision noise. At the same time, after the airflow collides with the barrier 3, it can turn under the guidance of the barrier 3, and the barrier 3 also guides the airflow more gently, so that the airflow completes the change of flow direction in a smoother and softer way, thereby reducing the whistling sound emitted during the airflow turning process. In this way, the noise emitted by the airflow and collision inside the noise reduction box can be effectively reduced, and the user experience can be improved.

[0055] In addition, the pressure and kinetic energy of the airflow in the pot are the largest when it is discharged from the exhaust valve, and the impact force of the airflow here is also large, so the high-speed airflow here is more likely to generate noise when it collides with other objects. By setting at least a part of the area of ​​the barrier 3 corresponding to the air outlet 421 of the exhaust valve on the pot cover 4, the high-speed airflow ejected from the air outlet 421 of the exhaust valve will preferentially contact and collide with the barrier 3, and the barrier 3 is flexible, which can not only alleviate the noise generated when colliding with the high-speed airflow, but also effectively reduce the kinetic energy and impact force of the airflow, reduce the flow rate of the airflow, and reduce the noise generated in the subsequent flow of the airflow.

[0056] Preferably, the barrier 3 is made of materials such as silicone and rubber.

[0057] Preferably, if Figure 1 , Figure 3 As shown, the exhaust valve includes an exhaust pipe 41 and a weight 42 located at the upper end of the exhaust pipe 41 , and an air outlet 421 is opened on the top surface of the weight 42 .

[0058] It can be understood that the barrier 3 divides the interior of the shell 1 into multiple noise reduction chambers from top to bottom. The airflow can not only come into contact with the barrier 3 when it is ejected from the exhaust valve outlet 421, but also come into contact with the barrier 3 when it shuttles between the multiple noise reduction chambers, thereby causing the airflow to come into contact or collide with the barrier 3 multiple times before being discharged, thereby greatly weakening the kinetic energy of the airflow and improving the noise reduction effect.

[0059] As a preferred embodiment of the present invention, Figure 3 , Figure 9 , Figure 16 As shown, the barrier member 3 is interference-fitted with the housing 1 , so that the barrier member 3 can be detachably fixed inside the housing 1 .

[0060] The barrier 3 is detachably fixed inside the housing 1, so that the user can remove the barrier 3 and clean the barrier 3 and the inside of the housing 1, thereby ensuring the cleanliness of the air flow channel inside the noise reduction box and preventing dirt from accumulating inside the housing 1 or on the barrier 3. In addition, the barrier 3 is fixed by interference fit, making the assembly and disassembly of the barrier 3 simpler and more convenient, and there is no need to set a complex fixing structure on the housing 1 and the barrier 3, reducing the processing difficulty and production cost.

[0061] Furthermore, if Figures 6 to 9 , Figures 13 to 15 As shown, the barrier 3 is provided with a gripping portion 35 protruding toward the inside of the noise reduction cavity, and a gripping space is provided between the gripping portion 35 and the inner wall of the housing 1 .

[0062] The gripping portion 35 is convenient for the user to grasp, and by grasping the gripping portion 35 to apply force to the barrier 3, the barrier 3 can be conveniently removed from the housing 1. At the same time, the provision of the gripping space further facilitates the user to grasp the gripping portion 35, so that the user can put his fingers into the gripping space to grasp the gripping portion 35.

[0063] As a preference, Figure 7 As shown, there are at least two gripping portions 35 which are relatively arranged on two sides of the barrier 3 to facilitate the user to grip with fingers and improve the user experience.

[0064] Preferably, if Figure 7 , Figure 13 As shown, the gripping portion 35 is located on the operating side of the barrier 3, and a mark is also provided on the operating side, wherein the mark is not limited to text, patterns, etc., to prompt the user to install the barrier 3 in the correct direction and posture to ensure the normal use of the noise reduction function of the noise reduction box.

[0065] It should be noted that the present invention does not limit the internal structure of the housing 1 and the number of layers of the noise reduction cavity, which includes but is not limited to the following embodiments:

[0066] Implementation method 1: In this implementation method, Figures 3 to 10 As shown, the shell 1 has a first baffle 111 and a second baffle 121 located above the first baffle 111. The first baffle 111 has an installation opening 113, and the second baffle 121 has a matching opening 122. The blocking member 3 cooperates with the installation opening 113 and the matching opening 122 respectively to form a first noise reduction chamber 13 located below the first baffle 111, a second noise reduction chamber 14 located between the first baffle 111 and the second baffle 121, and a third noise reduction chamber 15 located above the second baffle 121 inside the shell 1.

[0067] In this embodiment, the barrier 3 cooperates with the first baffle 111 and the second baffle 121 to form an upper and lower three-layer noise reduction cavity. Specifically, the barrier 3 is installed at the installation opening 113 of the first baffle 111 and extends upward, and cooperates with the matching opening 122 of the second baffle 121 to seal.

[0068] Specifically, Figure 4 , Figure 6 , Figure 8 , Figure 10 As shown, the first baffle 111 is provided with a first air port 112 connecting the first noise reduction chamber 13 and the second noise reduction chamber 14. The first air port 112 surrounds the outer periphery of the barrier 3. The barrier 3 includes a fixing portion 33 that cooperates with the mounting port 113, and a sealing portion 34 that extends upward and cooperates with the matching port 122. The sealing portion 34 is provided with a second air port 32 connecting the second noise reduction chamber 14 and the third noise reduction chamber 15.

[0069] The first air port 112 surrounds the periphery of the barrier 3, so that the airflow in the first noise reduction chamber 13 flows from the center to the outside, and then flows up from the periphery into the second noise reduction chamber 14, and the second air port 32 is opened on the side wall of the sealing portion 34, so the airflow in the second noise reduction chamber 14 needs to pass through the second air port 32 horizontally to enter the central area of ​​the third noise reduction chamber 15 above. In this way, the first air port 112 and the second air port 32 have different directions, and the airflow shuttles from the periphery to the central area, so that the airflow needs to turn when passing through the first air port 112 and the second air port 32, thereby further improving the noise reduction effect. In addition, the second air port 32 is located on the sealing portion 34, and the sealing portion 34 is a flexible structure, so it can further reduce the noise emitted when the airflow passes through the second air port 32.

[0070] like Figure 6 , Figure 10 As shown, the fixing portion 33 is provided with a flange to cooperate with the edge of the installation opening 113 to form a limit, and the top of the sealing portion 34 is provided with a hook for hooking and fixing with the edge of the matching opening 122.

[0071] Furthermore, if Figure 6, Figure 8 , Figure 10 As shown in Figure 8 and Figure 10 , the sealing part 34 has a top air chamber communicating with the third noise reduction chamber 15. A plurality of connecting ribs 37 are arranged in the top air chamber. The connecting ribs 37 divide the top air chamber into a plurality of air passing channels 36. There are a plurality of second air passing ports 32 which are correspondingly communicated with at least part of the air passing channels 36.

[0072] The air flow in the second noise reduction chamber 14 enters each air passing channel 36 respectively through a plurality of second air passing ports 32, so that the air flow gathered in the second noise reduction chamber 14 is dispersed into multiple small-flow air flows and enters the third noise reduction chamber 15, so as to reduce the air flow rate passing through each second air passing port 32, reduce the noise generated when the large-flow air flow flows, and the flow rate of the air flow is further reduced after being dispersed, thereby improving the noise reduction effect. At the same time, the connecting ribs 37 also improve the strength of the sealing part 34, preventing deformation under the push of the air flow and losing the sealing performance.

[0073] Among them, the second air passing ports 32 can be correspondingly communicated with the air passing channels 36 one by one, or can be communicated with part of the air passing channels 36, which is not limited herein.

[0074] Embodiment 2: In this embodiment, as Figures 11 to 16 shown, the interior of the housing 1 has a first noise reduction chamber 13 located below the barrier member 3 and a second noise reduction chamber 14 located above the barrier member 3. The barrier member 3 has a barrier area 38 corresponding to the exhaust valve of the pot lid 4 and an exhaust area 39 arranged in a dislocation manner with respect to the barrier area 38. An air passing port communicating the first noise reduction chamber 13 and the second noise reduction chamber 14 is provided in the exhaust area 39.

[0075] The barrier area 38 corresponds to the air outlet 421 of the exhaust valve on the pot lid 4, so that when the gas in the pot is discharged, it first contacts the barrier member 3, and thus completes a noise reduction. After the gas collides with the barrier area 38, it turns and then returns to the first noise reduction chamber 13, and then surges up to the second noise reduction chamber 14 through the air passing port and is discharged from the second noise reduction chamber 14.

[0076] Specifically, as Figure 12 shown, the barrier area 38 is located in the central area, and the air passing port is located on one side of the barrier area 38 or surrounds the outer periphery of the barrier area 38. Further, as Figures 13 to 15 shown, a gas guiding column 391 is provided at the air passing port to improve the guiding effect on the air flow. The exhaust port of the housing 1 is located on one side of the second noise reduction chamber 14, and the gas guiding column 391 is located on the same side as the exhaust port to improve the air flow discharge efficiency.

[0077] Specifically, as Figure 11 , Figure 12As shown, an installation bracket 18 is provided inside the housing 1. The installation bracket 18 has an installation hole 181. The barrier member 3 is provided with an installation post. The barrier member 3 is fixed by inserting and mating the installation post with the installation hole 181. Further, the barrier area 38 bulges upward, and the installation bracket 18 is provided with a through port that is sealingly mated with the barrier area 38.

[0078] As a preferred embodiment of the present utility model, as Figure 12 , Figure 13 , Figure 14 shown, the barrier member 3 is provided with a convex portion that bulges upward. The convex portion forms a noise reduction cavity 31 on the lower side of the barrier member 3. The noise reduction cavity 31 is provided corresponding to the air outlet 421 of the exhaust valve of the pot lid 4.

[0079] After the noise reduction box is assembled on the pot lid 4, some components of the exhaust valve on the pot lid 4, such as the weight 42, etc., are accommodated in the chamber at the lowermost layer of the noise reduction box. After the air flow in the pot sprays out from the air outlet 421 of the exhaust valve, more of it will rush upward into the noise reduction cavity 31. The noise reduction cavity 31 is recessed upward. Therefore, it can not only buffer the air flow to reduce the kinetic energy of the air flow, but also the noise reduction cavity 31 only has an opening for the air flow to enter at the position corresponding to the weight 42 below, and other areas are closed. Therefore, the air flow cannot directly spray upward from the noise reduction cavity 31, but after buffering in the noise reduction cavity 31, it flows back downward, and then disperses and flows back below the barrier member 3 from the opening below the noise reduction cavity 31, so that the converged air flow is dispersed and flows, causing the converged air flow at the noise reduction cavity 31 to be divided into multiple smaller flow rate air flows to the outside, and then continue to flow upward and be discharged. In this way, by setting the noise reduction cavity 31, the air flow sprayed out from the air outlet 421 of the exhaust valve can not only be buffered in the noise reduction cavity 31 and change the flow direction, extending the flow path of the air flow, but also when the air flow flows out from the noise reduction cavity 31, it can be dispersed into multiple small flow rate air flows, thereby greatly reducing the noise generated during the air flow process, improving the noise reduction effect and the usage experience.

[0080] When the cooking appliance starts to exhaust, the gas in the pot is discharged from the air outlet 421 of the exhaust valve. The gas first flows upward to the noise reduction cavity 31, then collides with the inner wall of the noise reduction cavity 31, and then flows downward from the four sides of the noise reduction cavity 31. Then, most of the gas flows out from the air passing port on one side or the periphery of the noise reduction cavity 31 to the upper noise reduction cavity, and a small part of the gas flows back to the lowermost noise reduction cavity. This space can play the role of cavity sound insulation, and finally is discharged through the gap between the housing 1 and the lid 2.

[0081] It should be noted that the present utility model does not limit the structure of the housing 1. In one embodiment, the housing 1 is an integral structure. The lower side of the housing 1 has an opening for cooperating with the pot lid 4 to form the lowermost noise reduction cavity and for the installation and disassembly of the barrier member 3.

[0082] In another embodiment, as Figure 1 , Figure 3 , Figure 10 shown, the housing 1 includes a bottom shell 11 and an upper shell 12. The bottom shell 11 is used to cooperate with the pot lid 4 to form the lowest-layer noise reduction cavity, and the upper shell 12 is located above the bottom shell 11. In the above-described first embodiment, the first baffle 111 is located on the bottom shell 11, and the second baffle 121 is located on the upper shell 12. The barrier member 3 is fixed to the bottom shell 11 and cooperates with the upper shell 12 for sealing.

[0083] Preferably, as Figure 10 , Figure 15 shown, the noise reduction box further includes a cover body 2. There is an assembly gap between the cover body 2 and the housing 1, and the airflow in the noise reduction cavity is discharged through the assembly gap.

[0084] The cover body 2 is arranged on the top of the housing 1 and forms an assembly gap with the housing 1 through assembly, so that the airflow in the noise reduction device is discharged through the assembly gap. Therefore, there is no need to open holes in the cover body 2 or the housing 1 of the noise reduction device, realizing a hidden design of the exhaust port, which not only ensures the exhaust efficiency, but also prevents the user from seeing the internal structure of the noise reduction box from the outside, improving the appearance quality of the cooking appliance and enhancing the aesthetics. In addition, it can prevent external dust and other impurities from entering the inside of the noise reduction box, ensuring internal cleanliness and reducing the user's cleaning burden. Moreover, by designing the structure of the cover body 2 and / or the housing 1, the assembly gap can be made to face a specific direction (such as vertically upward, inclined upward or horizontally), so as to meet different exhaust requirements. In addition, exhausting through the assembly gap further reduces the noise generated when the airflow passes while ensuring the exhaust volume and exhaust efficiency.

[0085] Specifically, as Figure 10 shown, one side of the cover body 2 cooperates with the housing 1 to form an assembly gap, so that the gas is discharged upward from one side of the cover body 2. Of course, an assembly gap can also be formed between the entire circumference of the cover body 2 and the housing 1, so that the airflow discharges around the cover body 2.

[0086] Furthermore, as Figure 5 shown, a diversion inclined surface 123 is provided at the top of the housing 1. The cover body 2 cooperates with the diversion inclined surface 123 to form an exhaust passage 16. The diversion inclined surface 123 is provided with diversion ribs 124, so that the outlet of the exhaust passage 16 faces upward.

[0087] The setting of the diversion inclined surface 123 can guide the airflow inside the housing 1 to be discharged. The diversion inclined surface 123 extends obliquely upward, and the diversion inclined surface 123 is provided with diversion ribs 124, so that the airflow in the exhaust passage 16 is blocked by the diversion ribs 124 and then flows upward to be discharged in a more upward direction, thereby avoiding the influence on the user's operation when the high-temperature airflow is discharged.

[0088] Specifically, Figure 5 As shown, the shell 1 is a square structure, the guide slope 123 is located on one side of the shell 1, and cooperates with the cover 2 to form a long exhaust channel 16, and the guide rib 124 is also long to adapt to the assembly gap formed between the cover 2 and the shell 1.

[0089] Furthermore, the pot cover 4 is also provided with an operating handle 43, and the guide slope 123 is located on the side of the shell 1 away from the operating handle 43 to avoid affecting the user's operation during the exhaust process.

[0090] The parts not described in the present invention can be realized by adopting or drawing on the existing technology.

[0091] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0092] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A noise reduction box for a cooking utensil, the noise reduction box being fixed to the upper part of a pot cover, characterized in that: The noise reduction box includes a shell and a barrier disposed in the shell, wherein the barrier divides the interior of the shell into at least two noise reduction chambers arranged in an up-and-down direction, and the barrier is a structure made of a flexible material, and at least a portion of the barrier covers the air outlet of the exhaust valve through a projection toward the pot cover, so that the airflow discharged from the exhaust valve collides with the barrier and is discharged.

2. The noise reduction box for a cooking appliance according to claim 1, characterized in that: The blocking member is interference-fitted with the shell so that the blocking member can be detachably fixed inside the shell.

3. The noise reduction box for a cooking appliance according to claim 2, characterized in that: The blocking member is provided with a gripping portion protruding toward the inside of the noise reduction cavity, and a gripping space is provided between the gripping portion and the inner wall of the shell.

4. The noise reduction box for a cooking appliance according to claim 1, characterized in that: The shell has a first baffle and a second baffle located above the first baffle, the first baffle has an installation opening, the second baffle has a matching opening, the blocking member cooperates with the installation opening and the matching opening respectively to form a first noise reduction chamber located below the first baffle, a second noise reduction chamber located between the first baffle and the second baffle, and a third noise reduction chamber located above the second baffle inside the shell.

5. The noise reduction box for a cooking appliance according to claim 4, characterized in that: The first baffle is provided with a first air outlet connecting the first noise reduction chamber and the second noise reduction chamber, and the first air outlet surrounds the outer circumference of the blocking member, and the blocking member includes a fixing portion that cooperates with the mounting port, and a sealing portion that extends upward and cooperates with the matching port, and the sealing portion is provided with a second air outlet connecting the second noise reduction chamber and the third noise reduction chamber.

6. The noise reduction box for a cooking appliance according to claim 5, characterized in that: The sealing portion has a top air chamber connected to the third noise reduction chamber, a plurality of connecting ribs are arranged in the top air chamber, the connecting ribs divide the top air chamber into a plurality of air passages, and the second air ports are multiple and connected to the air passages one by one.

7. The noise reduction box for a cooking appliance according to claim 1, characterized in that: The shell body has a first noise reduction chamber located below the blocking member, and a second noise reduction chamber located above the blocking member. The blocking member has a blocking area corresponding to the exhaust valve of the pot cover, and an exhaust area offset from the blocking area. The exhaust area is provided with an air outlet connecting the first noise reduction chamber and the second noise reduction chamber.

8. The noise reduction box for a cooking appliance according to claim 1, characterized in that: The blocking member is provided with a convex portion protruding upward, and the convex portion forms a noise reduction cavity on the lower side of the blocking member, and the noise reduction cavity is arranged corresponding to the air outlet of the exhaust valve of the pot cover.

9. The noise reduction box for a cooking appliance according to claim 1, characterized in that: The noise reduction box further comprises a cover body, and an assembly gap is provided between the cover body and the shell body, and the airflow in the noise reduction cavity is discharged through the assembly gap.

10. The noise reduction box for a cooking appliance according to claim 9, characterized in that: The top of the shell is provided with a guide slope, the cover body cooperates with the guide slope to form an exhaust channel, and the guide slope is provided with guide convex ribs so that the outlet of the exhaust channel faces upward.

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