WO2023060880A1

WO2023060880A1 - Noise reduction device, base, lid, and food processor

Info

Publication number: WO2023060880A1
Application number: PCT/CN2022/090826
Authority: WO
Inventors: 刘华; 刘苗; 梅长云; 梁建辉; 邱锐杰
Original assignee: 广东美的生活电器制造有限公司
Priority date: 2021-10-13
Filing date: 2022-04-30
Publication date: 2023-04-20

Abstract

Provided are a noise reduction device (170), a base (110), a lid, and a food processor (100). The noise reduction device (170) is used in the food processor (100), and comprises a housing (172). The housing (172) is internally provided with a plurality of noise reduction cavities, and the housing (172) is further provided with a first air duct (174), wherein a side wall of the first air duct (174) is provided with a plurality of communication portions (176), and each noise reduction cavity is in communication with at least one communication portion (176). By rationally configuring the structure of the noise reduction device (170), the noise reduction device (170) comprises a plurality of noise reduction cavities, and acoustic waves in the noise reduction cavities rub against inner walls of the noise reduction cavities to convert mechanical energy into thermal energy, such that acoustic energy is consumed, the effects of sound absorption and noise reduction can be effectively achieved, and the aim of eliminating a specific target noise reduction frequency can be achieved. The operation noise of the food processor (100) can be reduced in a targeted manner, and a noise reduction effect is good.

Description

Noise Reduction Devices, Bases, Lids, and Blenders

This application claims the priority of the Chinese patent application with the application number "202111193682.9" and the title of the invention "noise reduction device, base and cooking machine" submitted to the State Intellectual Property Office of China on October 13, 2021, on October 13, 2021 The priority of a Chinese patent application dated "202122463842.9" and the title of the invention is "Cover and Cooking Machine", submitted to the State Intellectual Property Office of China on October 13, 2021, with the application number "202122465748.7" and the title of the invention is "Cooking Machine" The priority of the Chinese patent application of , the entire content of which is incorporated in this application by reference.

technical field

The present application relates to the technical field of cooking machines, in particular, to a noise reduction device, a base, a cover, a cooking machine, and a cover.

Background technique

In the related art, the cooking machine includes a cup assembly. When the cooking machine is working, the pulverizer of the cup assembly rotates to grind food, and the food hits the inner wall of the cup assembly to generate noise. Moreover, the motor of the cup assembly is connected to the fan blade of the cup assembly, and the operation of the motor will also generate relatively large noise, resulting in poor user experience.

Contents of the invention

This application aims to solve at least one of the technical problems existing in the prior art or related art.

To this end, the first aspect of the present application proposes a noise reduction device.

A second aspect of the present application proposes a base.

The third aspect of the present application proposes a cooking machine.

The fourth aspect of the present application proposes a cover body.

The fifth aspect of the present application proposes a cooking machine.

The sixth aspect of the present application proposes a cooking machine.

In view of this, the first aspect of the present application proposes a noise reduction device for cooking machines, including: a housing, a plurality of noise reduction chambers are arranged in the housing, and the housing is also provided with a first wind The side wall of the first air duct is provided with a plurality of communication parts, and each noise reduction cavity communicates with at least one communication part.

A noise reduction device provided by the present application includes a housing, and a plurality of noise reduction cavities are arranged in the housing, and the housing is also provided with a first air channel, and a plurality of communication parts are provided on the side wall of the first air channel, Wherein, each noise reduction cavity communicates with at least one communication portion. The sound waves generated when the cooking machine is in operation are propagated to a plurality of connecting parts through the first air duct, enter into a plurality of noise reduction cavities, and then pass out of the noise reduction device through the plurality of noise reduction cavities. That is to say, for the noise reduction chamber, the inlet and outlet of the noise reduction chamber are of the same structure (ie, the connecting part), and the sound wave is transmitted from the connecting part to the noise reducing chamber, and then transmitted out from the connecting part.

By rationally setting the structure of the noise reduction device, the noise reduction device includes multiple noise reduction chambers. The sound waves in the noise reduction chamber rub against the inner wall of the noise reduction chamber to convert mechanical energy into heat energy, thereby consuming sound energy and effectively achieving sound absorption. Noise reduction effect.

It can be understood that when the cooking machine is working, the target noise reduction frequency characteristic remains unchanged, and the noise reduction device is related to the target noise reduction frequency of the cooking machine, which can achieve the purpose of eliminating the specific target noise reduction frequency. The operating noise of the cooking machine can be reduced in a targeted manner, and the noise reduction effect is good.

Further, the number of noise reduction cavities is multiple, so the structure of multiple noise reduction cavities can be set in a targeted manner according to the target noise reduction frequency, for example, multiple specifications of noise reduction cavities are set for multiple different frequencies, and another example , setting multiple noise reduction cavities of the same specification for the same frequency is conducive to realizing broadband sound absorption and noise reduction, which can meet the diverse needs of users, and is conducive to improving product performance and market competitiveness.

According to the noise reduction device mentioned above in this application, it may also have the following additional technical features:

In the above technical solution, further, the plurality of noise reduction cavities are located on the peripheral side of the first air duct.

In this technical solution, by rationally setting the matching structure of multiple noise reduction cavities and the first air duct, multiple noise reduction cavities are located on the peripheral side of the first air duct, so that the structure of the first air duct can be rationally utilized, Effective and reliable structural support is provided to ensure the matching dimensions of the plurality of communicating parts and the plurality of noise reduction cavities.

In any of the above technical solutions, further, the multiple noise reduction cavities include a first noise reduction cavity, the first noise reduction cavity includes a resonance pipe and a resonance chamber, and the resonance pipe communicates with the resonance chamber and the communication part; wherein, the resonance pipe The flow cross-sectional area of the resonance chamber is smaller than the flow cross-sectional area of the resonance chamber.

In this technical solution, by rationally setting the structure of multiple noise reduction cavities, the multiple noise reduction cavities include a first noise reduction cavity, the first noise reduction cavity includes a resonance pipe and a resonance chamber, and the resonance pipe communicates with the resonance chamber and Connectivity. Specifically, when the cooking machine is working, part of the sound waves in the cooking machine are transmitted to the resonance chamber through the resonance pipe, and then transmitted from the resonance chamber to the resonance pipe, and then transmitted to the first air duct. That is to say, the entrance and the exit of the first noise reduction chamber have the same structure, and the sound wave is transmitted to the resonance chamber by the resonance pipe, and then transmitted out by the resonance pipe.

By reasonably setting the matching structure of the resonance pipe and the resonance chamber, the cross-sectional area of the resonance pipe is smaller than that of the resonance chamber, that is, the resonance pipe and the resonance chamber are jointly constructed into a resonant cavity structure. When reaching the resonant chamber, the part of the sound wave that is close to the natural frequency of the resonant cavity structure causes the resonance of the resonant cavity structure. During the vibration process, the sound wave in the resonant cavity structure rubs against the resonant pipe and the inner wall of the resonant cavity, converting mechanical energy into It is heat energy, thereby consuming sound energy, which can effectively achieve the effect of sound absorption and noise reduction.

Further, the flow cross-sectional area of the resonance pipe is smaller than the flow cross-sectional area of the resonance chamber, that is, the structure of the first noise reduction cavity is reasonably set, which is conducive to the coupling of sound waves with the first noise reduction cavity, thereby ensuring noise reduction. Noise reduction effect of the device.

In any of the above technical solutions, further, the flow cross-sectional area S1 of the resonance pipeline, the volume V1 of the resonance chamber, the length L1 of the resonance pipeline, the sound velocity c1 and the target noise reduction frequency f1 of the cooking machine satisfy:

L1≥2mm.

In this technical solution, when the cooking machine is working, the target noise reduction frequency characteristic remains unchanged, and the flow cross-sectional area S1 of the resonance pipe, the volume V1 of the resonance chamber, the length L1 of the resonance pipe, and the sound velocity c1 are all related to the cooking machine. The target noise reduction frequency f1 of is relevant. That is to say, while ensuring the noise reduction effect of the noise reduction device, effectively adapting to the internal space layout of the cooking machine is beneficial to reducing the occupancy rate of the internal space of the cooking machine by the noise reduction device, thereby helping to realize the miniaturization of the cooking machine.

Specifically, the length L1 of the resonance pipe includes 3 mm, 4 mm, 5 mm, 6 mm, etc., which are not listed here.

In any of the above technical solutions, further, the plurality of noise reduction cavities include a second noise reduction cavity, the second noise reduction cavity is a wavelength tube, and the wavelength tube communicates with the communication part.

In this technical solution, by rationally arranging the structures of the plurality of noise reduction cavities, the plurality of noise reduction cavities include a second noise reduction cavity, wherein the second noise reduction cavity is a wavelength tube, and the wavelength tube is communicated with the connecting part. The size of the wavelength tube is related to the target noise reduction frequency of the cooking machine. When the cooking machine is working, the sound wave in the first air channel is transmitted into the wavelength tube through the connecting part, and then transmitted out from the connecting part. That is to say, the wavelength tube has only one opening, the sound wave is transmitted into the wavelength tube through the connecting part, part of the sound wave is absorbed, and part of the sound wave is transmitted out from the same connecting part.

When the cooking machine is working, the noise frequency characteristics remain unchanged. Since the size of the wavelength tube is related to the target noise reduction frequency of the cooking machine, the purpose of eliminating the noise corresponding to the target noise reduction frequency can be achieved. By setting the wavelength tube corresponding to the target noise reduction frequency, the operating noise of the cooking machine can be reduced in a targeted manner, and the noise reduction effect is good.

Specifically, the sound wave is introduced into the wavelength tube through the connecting part, and is reflected after reaching the bottom of the wavelength tube. The reflected wave and the incident wave are superimposed to form a standing wave. , resonance occurs, and at this time the amplitude of the particle is the largest, and the sound energy consumed is also the largest, so it has a significant sound absorption effect at the resonance frequency.

That is to say, the wavelength tube of the present application can perform noise reduction processing on noise in a specific frequency band, and the noise reduction effect is good.

In any of the above technical solutions, further, the sound velocity c2, the length L2 of the wavelength tube and the target noise reduction frequency f2 of the cooking machine satisfy:

In this technical solution, when the cooking machine is working, the target noise reduction frequency characteristic remains unchanged, and the sound velocity c2, the length L2 of the wavelength tube and the target noise reduction frequency f2 of the cooking machine satisfy:

That is, the speed of sound c2, the length L2 of the wavelength tube are related to the target noise reduction frequency f2 of the cooking machine. The length of the wavelength tube is inversely related to the target noise reduction frequency. The longer the length of the wavelength tube, the lower the target noise reduction frequency; the shorter the length of the wavelength tube, the higher the target noise reduction frequency.

Specifically, the cross-sectional area of the wave tube is positively correlated with the amount of noise attenuation. The larger the cross-sectional area of the wavelength tube, the greater the noise reduction; the smaller the cross-sectional area of the wavelength tube, the smaller the noise reduction.

In any of the above technical solutions, further, target noise reduction frequencies corresponding to any two noise reduction cavities among the plurality of noise reduction cavities are different.

In this technical solution, by rationally setting the structure of multiple noise reduction cavities, the target noise reduction frequencies corresponding to any two noise reduction cavities in the multiple noise reduction cavities are different, so that multiple noise reduction cavities can be used for multiple The noise corresponding to each target noise reduction frequency is denoised, which provides an effective and reliable structural support for broadband sound absorption.

Specifically, the target noise reduction frequencies corresponding to any two noise reduction cavities in the plurality of noise reduction cavities are different, because the size of the noise reduction cavities is related to the target noise reduction frequency, therefore, it can be understood that in the multiple noise reduction cavities The dimensions of any two noise reduction cavities are different.

In any of the above technical solutions, further, the housing includes a multi-layer shell body, the first air channel includes a plurality of sub-air channels, and each layer of the shell body is provided with a sub-air channel; any adjacent two layers of the shell body Multiple noise reduction cavities are enclosed.

In this technical solution, by rationally setting the structure of the shell, the shell includes a multi-layer shell body, and a plurality of noise reduction cavities are enclosed between any two adjacent shell bodies. That is to say, there are multi-layer areas inside the shell, and multiple noise reduction chambers are set in each layer area. This setting reasonably arranges the internal space of the noise reduction device, increases the number of noise reduction chambers, and is conducive to , the structure of multiple noise reduction cavities is set in a targeted manner, which provides effective structural support for noise reduction corresponding to multiple target noise reduction frequencies.

Further, the first air duct includes a plurality of sub-air ducts, and one sub-air duct is provided on each shell body. After the multilayer shell body is assembled together, any two adjacent sub-air ducts among the plurality of sub-air ducts are correspondingly connected, that is, the plurality of sub-air ducts enclose the first air duct.

In any of the above technical solutions, further, the shell body includes: a partition, the partition is provided with a through hole, and the sub-air duct is located on the periphery of the through hole; In the body, the shroud of one shell body abuts against the partition of the other shell body, and a plurality of noise reduction cavities are enclosed between the partition and the shroud.

In this technical solution, the shell body includes partitions and enclosures. The partition is provided with a through hole, and the sub-air duct is located on the peripheral side of the through hole, and the through hole can ensure that any two adjacent sub-air ducts among the plurality of sub-air ducts are connected.

In addition, the coaming plate is arranged on the partition plate, and in any two adjacent shell bodies, the coaming plate of one shell body abuts against the partition plate of the other shell body. That is to say, the coaming boards and partitions of any adjacent two-layer shell body cooperate to meet the use requirements of forming multiple noise reduction chambers while reducing the input of materials surrounding the noise reduction chambers, which is beneficial to reduce the production cost of the product. cost. At the same time, while ensuring the volume of multiple noise reduction chambers, this setting is beneficial to reduce the overall size of the noise reduction device, thereby reducing the occupancy rate of the noise reduction device to the internal space of the cooking machine, and is convenient for other components of the cooking machine. reasonable layout.

It can be understood that, in any two adjacent shell bodies, the surrounding plate of one shell body abuts against the partition plate of the other shell body. That is, the surrounding plate of one shell body is connected with the partition plate of the other shell body, so as to ensure the airtight requirement of the noise reduction chamber.

In any of the above technical solutions, further, in any two adjacent shell bodies, the shrouds of one shell body are alternately arranged with the shrouds of the other shell body.

In this technical solution, by reasonably setting the arrangement positions of the shrouds of two adjacent shell bodies, so that in any two adjacent shell bodies, the shrouds of one shell body and the shrouds of the other shell body are arranged alternately, While satisfying the use requirement of forming multiple noise-reducing cavities, it is beneficial to increase the distance between two adjacent baffles in each shell body, thus reducing the processing difficulty of producing the shell body and reducing the production cost. cost, and is conducive to prolonging the service life of the mold for producing the shell body.

In any of the above technical solutions, further, the noise reduction device further includes a seal, which is used to seal the connection between any two adjacent shell bodies.

In this technical solution, the noise reduction device further includes a seal, and the seal is located at the junction of any adjacent two-layer shell bodies, that is, the joint of any adjacent two-layer shell bodies is sealed by the seal, so that it can avoid The air flow is leaked from the joint of any adjacent two-layer shell body, so as to ensure the good sealing of the joint of the adjacent two-layer shell body, so as to limit the flow path of the air flow, and then ensure the effective contact between the noise reduction cavity and the sound wave , providing an effective and reliable structural support for improving the noise reduction effect of the noise reduction device.

In addition, the seal is located at the joint of any adjacent two-layer shell body, which can play a role in damping vibration. In this way, the hard contact between the adjacent two-layer shell bodies can be avoided when the cooking machine is working, which is beneficial to reduce further lifting. The noise reduction effect of the noise reduction device.

Specifically, the sealing element is a sealing ring. Furthermore, the sealing element is a rubber element.

In any of the above technical solutions, further, the outermost two-layer shell bodies in the multi-layer shell bodies are denoted as the first shell body and the second shell body, and at least one of the first shell body and the second shell body A guide post is provided, and the case body located between the first case body and the second case body is provided with a guide hole, and the guide post can be inserted into the guide hole.

In this technical solution, by reasonably setting the matching structure of the multi-layer shell body, the outermost two-layer shell bodies in the multi-layer shell body are recorded as the first shell body and the second shell body, and the first shell body A guide column is provided, or the second shell body is provided with a guide column, or both the first shell body and the second shell body are provided with a guide column. In addition, the shell body located between the first shell body and the second shell body is provided with a guide hole. In this way, when the multi-layer shell body is assembled, the guide post can be inserted into the guide hole, so as to complete the assembly of the multi-layer shell body. The guide column and the guide hole are matched and connected to limit the relative displacement of the adjacent two-layer shell bodies, which can ensure the matching size between the adjacent two-layer shell bodies, and then can ensure the overall size of the noise reduction device.

Furthermore, the guide post and the guide hole cooperate to guide the assembly of the adjacent two-side shell bodies, which reduces the difficulty of matching the adjacent two-side shell bodies, and is conducive to improving the efficiency of disassembly and assembly of the multi-layer shell bodies.

Specifically, each corner of the first shell body is provided with at least one guide post; or each corner of the second shell body is provided with at least one guide post; or each corner of the first shell body and the second shell Each corner of the body is provided with at least one guide column. This setting can ensure the matching dimensions of the multi-layer shell body.

In any of the above technical solutions, further, the partition is provided with a slot, and in any two adjacent shell bodies, the shroud of one shell body is inserted into the slot of the other shell body.

In this technical solution, by reasonably setting the matching structure of the shrouds and partitions of any adjacent two-layer shell bodies, in any adjacent two-layer shell bodies, the shrouds of one shell body are inserted into the inserts of the other shell body. in the slot. The slot can wrap the end of the shroud inserted therein, which is beneficial to improve the airtightness of the connection between the shroud and the partition, and provides effective and reliable structural support for limiting the flow path of the airflow.

That is to say, the coaming boards and partitions of any adjacent two-layer shell body cooperate to meet the use requirements of forming multiple noise reduction chambers while reducing the input of materials surrounding the noise reduction chambers, which is beneficial to reduce the production cost of the product. cost. At the same time, while ensuring the volume of multiple noise reduction chambers, this setting is beneficial to reduce the overall size of the noise reduction device, thereby reducing the occupancy rate of the noise reduction device to the internal space of the cooking machine, and is convenient for other components of the cooking machine. reasonable layout.

In any of the above technical solutions, further, the outer surface of the casing is provided with a water receiving tank and a water leakage hole, and the water receiving tank is connected to the water leakage hole; wherein, the noise reduction chamber is located on one side of the water leakage hole.

In this technical solution, by rationally setting the structure of the shell, the outer surface of the shell is provided with a water receiving tank and a water leakage hole, and the water receiving tank and the water leakage hole are connected, that is, if the condensed water drops on the shell, the condensed Water can flow along the water receiving tank to the water leakage hole, and then drain out of the noise reduction device, reducing the probability of condensed water leaking into the noise reduction chamber and ensuring the noise reduction effect of the noise reduction device. This setting enriches the use functions of the noise reduction device, and improves the use performance and market competitiveness of the noise reduction device.

Further, the noise reduction chamber is located on one side of the water leakage hole, and the water flow discharged from the water leakage hole is located on one side of the noise reduction chamber, so that the condensed water can be effectively prevented from flowing into the noise reduction chamber.

In any of the above technical solutions, further, an air guide groove is provided on the side of the casing away from the water receiving groove.

In this technical solution, an air guide groove is provided on the side of the housing away from the water receiving tank, so that the noise reduction device has the function of guiding air flow, so as to limit the flow path of the air flow. This setting enriches the use functions of the noise reduction device, and improves the use performance and market competitiveness of the noise reduction device.

The second aspect of the present application provides a base for a cooking machine, the base includes: the noise reduction device according to any one of the technical solutions in the first aspect.

Because the base provided by the present application includes the noise reduction device according to any one of the technical solutions in the first aspect, it has all the beneficial effects of the above noise reduction device, and will not describe them here.

Specifically, the number of noise reduction devices is at least one.

In the above technical solution, further, the base further includes: a seat body, a second air duct is arranged in the seat body, the seat body is also provided with an air inlet and an air outlet, the second air duct communicates with the air inlet and the air outlet, and the lowering Noise device is located in the second air duct.

In this technical solution, the base further includes: a seat body, a second air duct is arranged in the seat body, the second air duct communicates with the air inlet, and the second air duct communicates with the air outlet, that is, the second air duct communicates with the air outlet. Air inlet and outlet. The noise reduction device is located in the second air duct to ensure effective contact between the noise reduction device and the sound waves, and provide effective structural support for the noise reduction treatment of the noise reduction device.

In any of the above technical solutions, further, the base further includes: sound-absorbing cotton located in the second air duct, and the sound-absorbing cotton is located on the peripheral side of the noise reduction device.

In this technical solution, the base also includes sound-absorbing cotton, which is located in the second air duct, and the sound-absorbing cotton can play the role of noise reduction, that is, the sound-absorbing cotton and the noise reduction device cooperate to achieve multi-level reduction of sound waves. Noise processing is beneficial to improve the noise reduction effect of the cooking machine.

Specifically, the cooking machine includes a cup assembly, the cup assembly includes a base, a motor and a fan blade are arranged in the base, the motor drives the fan blade to rotate, and the base communicates with the second air duct. When working, the motor drives the fan blades to rotate to inhale air from the air inlet of the base. After passing through the sound-absorbing cotton, the motor and the fan blades, the air flows to the noise reduction device, and then is discharged from the cooking machine through the air outlet. That is to say, after the air inlet enters the second air duct, it first passes through the sound-absorbing cotton for noise reduction, and then passes through the noise reduction device for noise reduction, realizing multi-level noise reduction processing. The sound-absorbing cotton is located around the noise reduction device, providing effective structural support for the multi-level noise reduction treatment.

In any of the above technical solutions, further, the top of the seat body is provided with a first opening, the first opening communicates with the second air duct, and the first opening is used to communicate with the cup assembly of the cooking machine; the bottom of the seat body An air inlet and an air outlet are provided, at least a part of the air inlet is arranged corresponding to the sound-absorbing cotton, and at least a part of the air outlet is arranged corresponding to the first air duct.

In this technical solution, by rationally setting the structure of the seat body, the seat body is provided with a first opening, an air inlet and an air outlet. Specifically, the top of the seat body is provided with a first opening, and the bottom of the seat body is provided with an air inlet and an air outlet.

The cup assembly of the cooking machine is detachably arranged on the top of the base, and the first opening is arranged on the top of the seat body, which can ensure that the airflow entering the second air duct from the air inlet can flow from the first opening to the motor of the cup assembly. That is, the smoothness of the air flow path is ensured.

In addition, the bottom of the seat body is provided with an air inlet and an air outlet, which can hide the air inlet and outlet while ensuring the smooth flow of the airflow, avoiding the exposure of the air inlet and outlet, which is conducive to improving the aesthetics of the product appearance .

Furthermore, at least a part of the air inlet is set correspondingly to the sound-absorbing cotton, so that the airflow entering through the air inlet needs to flow through the sound-absorbing cotton, so as to ensure effective contact between the sound-absorbing cotton and the airflow, thereby ensuring the noise reduction effect of the sound-absorbing cotton.

Furthermore, at least a part of the air outlet is arranged corresponding to the first air duct, which can ensure that the airflow flows to the air outlet after being subjected to noise reduction treatment by the noise reduction device, so as to ensure the noise reduction effect of the noise reduction device.

The third aspect of the present application provides a cooking machine, including: the base according to any one of the technical solutions in the second aspect.

Because the cooking machine provided by the present application includes the base according to any one of the technical solutions in the second aspect, it has all the beneficial effects of the above-mentioned base, and no one statement is made here.

In the above technical solution, further, the cooking machine further includes: a cup assembly, which is detachably connected to the base.

In this technical solution, the cooking machine also includes a cup body assembly, which is detachably connected to the base, and the cup body assembly is used to hold food materials and has the function of cooking food materials (such as crushing food materials, heating food materials, etc.) . The cup assembly is detachably connected to the base, the base has the function of supporting and fixing the cup assembly, the cup assembly can be assembled with the base, and the cup assembly can also be separated from the base.

In any of the above technical solutions, further, the cup body assembly includes: a cup body; a crushing knife, located in the cup body; a seat, connected with the cup body, and the seat body is provided with a second opening; a motor, located in the seat body, the motor It includes a drive shaft, the first end of the drive shaft extends into the cup and is connected with the crushing knife; the fan blade is located in the seat, and the second end of the drive shaft is connected to the fan blade; wherein, the first opening of the base communicates with the second opening.

In this technical solution, the cup body assembly includes a cup body, a crushing knife, a seat body, a motor and fan blades. Wherein, the seat body is provided with a second opening, and the second opening communicates with the first opening, that is, the seat body communicates with the second air duct of the base.

Specifically, the cup assembly includes a seat, and a motor and a fan blade are arranged in the seat, and the motor drives the pulverizer to rotate while driving the fan blade to rotate. When working, the motor drives the fan blades to rotate to inhale air from the air inlet of the base. The air flow passes through the sound-absorbing cotton and flows from the first opening to the second opening. After passing through the motor and the fan blades, the air flows from the second opening to the first opening. And flow to the noise reduction device, and then out of the cooking machine through the air outlet. This setting can ensure the effective contact between the airflow and the motor and the fan blades, so as to use the cold air outside to dissipate heat from the motor and the fan, which can ensure the working temperature of the motor and provide structural support for extending the service life of the motor.

It can be understood that the motor rotates at high speed to generate rotational power, and heat is generated when the motor is working, so that the drive shaft of the motor is connected to the fan blade, and the fan blade is used to dissipate heat from the motor. When the motor works and drives the fan blades to rotate, vibration noise and turbulent noise caused by wind resistance will be generated. That is to say, the main noise sources of the cooking machine include the motor and the fan blades. Therefore, sound-absorbing cotton and noise reduction devices are used for noise reduction treatment.

The fourth aspect of the present application proposes a cover body for cooking machines, the cover body includes: a cover body, the cover body is provided with a channel and a first chamber, and the cover body is also provided with a first air inlet and an air outlet, The channel communicates with the first air inlet and the air outlet, and a communication structure is provided on the tube wall of the channel, and the first chamber communicates with the communication structure; wherein, the cross-sectional area of the passage is smaller than that of the first chamber.

A cover provided by the present application includes a cover body, the cover body is provided with a channel, and the cover body is also provided with a first air inlet and an air outlet, the channel communicates with the first air inlet, and the channel communicates with the air outlet, that is , the channel communicates with the first air inlet and the air outlet. The heat generated by the cooking machine can be discharged from the cover through the channel, which provides structural support for the safety and reliability of the cooking machine.

Further, a communication structure is provided on the pipe wall of the channel, and the first chamber communicates with the communication structure. By rationally setting the matching structure of the channel and the first chamber, the flow cross-sectional area of the channel is smaller than the flow cross-sectional area of the first chamber, that is, the channel and the first chamber are jointly constructed into a resonant cavity structure. When reaching the first chamber, the part of the sound wave that is close to the natural frequency of the resonant cavity structure causes the resonance of the resonant cavity structure. During the vibration process, the sound wave in the resonant cavity structure rubs against the channel and the inner wall of the first cavity, dissipating the mechanical energy It is converted into heat energy, thereby consuming sound energy, which can effectively achieve the effect of sound absorption and noise reduction.

Further, the flow cross-sectional area of the channel is smaller than the flow cross-sectional area of the first chamber, that is, the matching structure of the channel and the first chamber is reasonably set up, which is conducive to the coupling of the sound wave with the channel and the first chamber, thereby enabling Ensure the noise reduction effect of the cover.

It can be understood that the sound wave generated when the cooking machine is in operation propagates to the connecting structure through the channel, then propagates to the first chamber through the connecting structure, enters the first chamber, and then transmits to the channel through the connecting structure. That is to say, for the first chamber, the inlet and outlet of the first chamber are the same structure (ie, a communication structure), and the sound wave is transmitted into the first chamber through the communication structure, and then transmitted out through the communication structure.

This setting makes the cover not block the discharge of hot air, but also reduces the amount of noise generated when the cooking machine is working, which is beneficial to improve the noise reduction effect of the cooking machine, enriches the use function of the cover, and improves the Product performance and market competitiveness.

According to the above-mentioned cover of the present application, it may also have the following additional technical features:

In the above technical solution, further, the flow cross-sectional area S1 of the communication structure, the volume V1 of the first chamber, the length L1 of the channel, the sound velocity c1 and the target noise reduction frequency f1 of the cooking machine satisfy:

In this technical solution, when the cooking machine is working, the target noise reduction frequency characteristic remains unchanged, and the flow cross-sectional area S1 of the connecting structure, the volume V1 of the first chamber, the length L1 of the channel, and the sound velocity c1 are all related to the cooking machine. The target noise reduction frequency f1 of is relevant. That is to say, while ensuring the noise reduction effect of the cover, the size of the cover is adapted to the size of other components of the cooking machine.

In any of the above technical solutions, further, there are multiple first chambers, and the multiple first chambers are arranged at intervals along the circumference of the channel.

In this technical solution, there are multiple first chambers, so the structures of multiple first chambers can be set in a targeted manner according to the target noise reduction frequency, for example, multiple specifications of the first chamber can be set for multiple different frequencies. A chamber, for another example, is provided with multiple first chambers of the same specification for the same frequency. This setting is conducive to the realization of broadband sound absorption and noise reduction, which can meet the diverse needs of users, and is conducive to improving product performance and market competitiveness.

Further, a plurality of first chambers are arranged at intervals along the circumference of the channel. In this way, the structure of the channel can be rationally utilized, providing effective and reliable structural support for matching dimensions between the communication structure and the plurality of first chambers.

Specifically, any one of the plurality of first chambers is different in size.

In any of the above technical solutions, further, there are multiple communication structures, and each first chamber communicates with at least one communication structure.

In this technical solution, there are multiple communication structures, and each first chamber is communicated with at least one communication structure to ensure the effectiveness and feasibility of communication between each first chamber and the channel, so that the first The channel cooperates with multiple first chambers to form multiple resonant cavity structures, so that multiple specifications of resonant cavity structures can be set for multiple different frequencies, which is beneficial to realize broadband sound absorption and noise reduction.

Specifically, a plurality of communication structures are arranged along the circumferential direction of the passage to cooperate with a plurality of first chambers arranged along the circumferential direction of the passage, and fully utilize the inner space of the cover body.

In any of the above technical solutions, further, there are multiple channels, and each first chamber communicates with the communication structure of at least one channel.

In this technical solution, there are multiple channels, and each channel communicates with the first air inlet and the air outlet. In addition, each first chamber communicates with the communication structure of at least one channel to ensure the effectiveness and feasibility of communicating between each first chamber and the channel, so that multiple channels cooperate with multiple first chambers to form Multiple resonant cavity structures, so that multiple specifications of resonant cavity structures can be set for multiple different frequencies, which is beneficial to realize broadband sound absorption and noise reduction.

In any of the above technical solutions, further, the cover body is further provided with a second chamber, the cover body is also provided with a second air inlet, the first air inlet is located between the second air inlet and the air outlet, And the second chamber communicates with the first air inlet and the second air inlet; wherein, the flow cross-sectional area of the first air inlet and the flow cross-sectional area of the second air inlet are smaller than the flow flow of the second chamber Sectional area.

In this technical solution, by rationally setting the structure of the cover body, a second chamber is also provided in the cover body, and the second chamber communicates with the first air inlet and the second air inlet. The hot air generated when the cooking machine is in operation enters into the second chamber through the second air inlet, then flows to the passage through the first air inlet, and then is discharged from the cover through the passage. That is to say, the hot air first passes through the second chamber, and then flows to the channel. This setting provides structural support for the safety and reliability of the cooking machine.

Further, by rationally setting the matching structure of the first air inlet, the second air inlet and the second chamber, the flow cross-sectional area of the first air inlet and the flow cross-sectional area of the second air inlet are both smaller than The cross-sectional area of the second chamber is equivalent to the fact that the sound wave enters a second chamber with a larger volume from a region with a smaller volume (such as the passage surrounded by the wall of the second air inlet), and then A small volume area (such as the channel surrounded by the wall of the first air inlet) is discharged to achieve the adaptation of the acoustic impedance. The sound wave is at the wall of the first air inlet, the cavity of the second chamber The wall of the second air inlet and the wall of the second air inlet reflect and interfere, so that the sound energy can be consumed, and the effect of sound absorption and noise reduction can be effectively achieved.

The second air inlet, the second chamber and the first air inlet cooperate to realize the first noise reduction treatment of sound waves, and the passage, the communication structure and the first chamber cooperate to realize the second reduction of sound waves. noise processing. That is to say, the sound wave flows through the cover body, and the cover body can perform multi-stage noise reduction processing on the sound wave, which is beneficial to improve the noise reduction effect of the cooking machine.

In any of the above technical solutions, further, the size L2 of the second chamber in the thickness direction of the cover, the sound velocity c2 and the target noise reduction frequency f2 of the cooking machine satisfy:

n is a natural number.

In this technical solution, when the cooking machine is working, the target noise reduction frequency characteristic remains unchanged, and the size L2 of the second chamber in the thickness direction of the cover and the sound velocity c2 are related to the target noise reduction frequency f2 of the cooking machine sex. That is to say, while ensuring the noise reduction effect of the cover, the size of the cover is adapted to other components of the cooking machine.

Specifically, n includes 0, 1, 2, 3, 4, 5, etc., which are not listed here.

In any of the above technical solutions, further, the cover body includes: a first sub-cover, the first sub-cover is provided with a channel, a first chamber, a first air inlet and an air outlet; a second sub-cover, with the first The sub-covers are detachably connected, the second sub-cover is provided with a second air inlet, and a second chamber is enclosed between the first sub-cover and the second sub-cover.

In this technical solution, the cover body includes a first sub-cover and a second sub-cover, the first sub-cover and the second sub-cover are detachably connected, the second sub-cover is provided with a second air inlet, the first sub-cover and the second sub-cover are detachably connected. A second chamber is enclosed between the second sub-covers, and the second chamber communicates with the first air inlet and the second air inlet of the first sub-cover. The hot air generated when the cooking machine is in operation enters the second chamber through the second air inlet of the second sub-cover, then flows to the channel through the first air inlet of the first sub-cover, and then is discharged from the cover through the channel. That is to say, the hot air first passes through the second chamber, and then flows to the channel. This setting provides structural support for the safety and reliability of the cooking machine. The second air inlet, the second chamber and the first air inlet cooperate to realize the first noise reduction treatment of sound waves. This setting reasonably sets the matching structure of the first sub-cover and the second sub-cover, so that the second chamber is enclosed between the first sub-cover and the second sub-cover, which reduces the input of materials while ensuring the noise reduction effect , which is beneficial to reduce the production cost of the product.

Further, the channel of the first sub-cover, the communication structure and the first chamber cooperate to realize the second noise reduction treatment of the sound wave. That is to say, the sound waves first pass through the second sub-cover, and then pass through the first sub-cover. The first sub-cover and the second sub-cover can perform multi-level noise reduction processing on the sound waves, which is beneficial to improve the noise reduction effect of the cooking machine.

In any of the above technical solutions, further, the first sub-cover includes: a first housing, the first housing is provided with a first air inlet; a second housing, detachably connected with the first housing, the second The second housing is provided with an air outlet, and the first housing and the second housing enclose a first chamber; wherein, one of the first housing and the second housing is provided with a channel.

In this technical solution, the first sub-cover includes a first housing and a second housing, the first housing is provided with a first air inlet, and the second housing is provided with an air outlet. Specifically, the first shell and the second shell are detachably connected, and the first shell and the second shell enclose the first chamber, that is, the first shell and the second shell cooperate to form a While the use of the first chamber is required, the input of materials surrounding the first chamber is reduced, which is beneficial to reduce the production cost of the product. Since the first shell and the second shell are detachably connected, it is convenient to clean the inside of the first sub-cover, which can ensure the sanitation and safety of the use of the cover.

Further, one of the first housing and the second housing is provided with a channel, that is, one of the first housing and the second housing is used to support and fix the channel, so as to ensure the connection between the channel and the first chamber. The matching structure ensures the effectiveness and feasibility of communication between the communication structure and the first chamber.

In any of the above technical solutions, further, at least a part of the first air inlet is provided correspondingly to the air outlet.

In this technical solution, at least a part of the first air inlet is arranged corresponding to the air outlet by rationally setting the matching structure of the first air inlet and the air outlet. That is, a part of the first air inlet is arranged correspondingly to the air outlet; or the first air inlet is arranged correspondingly to the air outlet, for example, the channel is a cylinder. This setting reduces the turning of the airflow and ensures the exhaust efficiency.

In any of the above technical solutions, further, the communication structure includes at least one of a communication hole and a communication groove.

In this technical solution, the communication structure includes at least one of a communication hole and a communication groove. That is, the communication structure includes a communication hole, or the communication structure includes a communication groove, or the communication structure includes a communication hole and a communication groove. The structure of the connected structure can be set in a targeted manner according to specific actual usage requirements to meet diverse usage requirements.

In any of the above technical solutions, further, the first sub-cover further includes a cover plate, the cover plate is located on the side of the first housing away from the second housing, the cover plate is provided with an avoidance space, and the air outlet is correspondingly provided with the avoidance space .

In this technical solution, the first sub-cover further includes a cover plate, which is detachably connected to the first housing, the cover plate is located on the side of the first housing away from the second housing, and the cover plate has a decorative effect. In order to ensure the aesthetics and fluency of the appearance of the cover.

In addition, the cover plate is provided with an avoidance space, and the air outlet is set corresponding to the avoidance space, and the avoidance space plays the role of avoiding the air outlet, so that the hot air at the air outlet can be smoothly discharged from the cover through the avoidance space.

It can be understood that the avoidance space includes at least one of an avoidance hole and an avoidance notch.

In any of the above technical solutions, further, the other of the first casing and the second casing is provided with a first surrounding edge, and the end of the passage protrudes into the first surrounding edge.

In this technical solution, by rationally setting the matching structure of the first shell and the first surrounding edge, one of the first shell and the second shell is provided with a passage, and the first shell and the second shell are provided with a channel. The other is provided with a first surrounding edge. When the first shell and the second shell are mated, the end of the channel extends into the first surrounding edge, and the first surrounding edge can limit the movement of the channel to ensure the matching structure of the first shell, the second shell and the channel , thereby ensuring effective cooperation between the channel and the first chamber. In addition, since the end of the passage protrudes into the first surrounding edge, the sealing of the connection between the first passage and the first surrounding edge can be guaranteed, so as to limit the flow path of the airflow and provide an effective noise reduction function for the cover. And reliable structural support.

Specifically, the first casing is provided with a first surrounding edge, and the first surrounding edge is located around the first air inlet, and the second casing is provided with a channel, and the free end of the channel can extend into the first surrounding edge.

Specifically, the second housing is provided with a first surrounding edge, and the first surrounding edge is located around the air outlet. The first housing is provided with a channel, and the free end of the channel can extend into the first surrounding edge.

In any of the above technical solutions, further, the outer surface of the second sub-cover is provided with a second surrounding edge, the second surrounding edge is located on the side of the second air inlet, and a part of the first sub-cover extends into the second surrounding edge. Inside the edge, the part of the first sub-cover located inside the second edge is provided with a first air inlet.

In this technical solution, by rationally setting the matching structure of the first sub-cover and the second sub-cover, the outer surface of the second sub-cover is provided with a second surrounding edge, and a part of the first sub-cover extends into the second surrounding edge . This setting increases the fit area and fit angle of the joint between the first sub-cover and the second sub-cover, which is beneficial to ensure the sealing of the joint between the first sub-cover and the second sub-cover, so as to limit the flow path of the airflow , providing an effective and reliable structural support for the noise reduction function of the cover.

Further, the part of the first sub-cover located in the second surrounding edge is provided with a first air inlet, while ensuring the tightness of the joint between the first sub-cover and the second sub-cover, it provides a connection between the first air inlet and the second sub-cover. Two air inlet connections provide effective structural support.

In any of the above technical solutions, further, the cover body further includes: a second sealing part, the second sealing part is used to seal the joint between the first sub-cover and the second surrounding edge, the first shell and the second shell The junction of the body, the junction of the first surrounding edge and the channel.

In this technical solution, by setting the second sealing part, the second sealing part is located at the joint between the first sub-cover and the second surround, the joint between the first shell and the second shell, and the joint between the first surround and the second surround. The joint of the channel is used to seal the joint of the first sub-cover and the second surround, the joint of the first shell and the second shell, and the joint of the first surround and the channel by using the second sealing part. This setting can prevent the airflow from leaking from the connection between the first sub-cover and the second surround, the connection between the first casing and the second casing, and the connection between the first surround and the channel, ensuring that the first The connection between the sub-cover and the second enclosure, the connection between the first casing and the second casing, and the connection between the first enclosure and the channel are well sealed, so as to limit the flow path of the airflow, thereby ensuring The effective contact of the second chamber and the first chamber with the sound wave provides an effective and reliable structural support for improving the noise reduction effect of the cover.

In addition, the second sealing part is located at the joint between the first sub-cover and the second surround, the joint between the first shell and the second shell, and the joint between the first surround and the channel, which can play a role of vibration reduction In this way, the hard contact between the first sub-cover and the second surround, the hard contact between the first shell and the second shell, and the hard contact between the first surround and the channel can be avoided when the cooking machine is working. , which is beneficial to reduce and further improve the noise reduction effect of the housing.

Specifically, the second sealing portion includes a plurality of sealing rings. The connection between the first sub-cover and the second surround, the connection between the first casing and the second casing, and the connection between the first surround and the channel are all provided with sealing rings. Furthermore, the sealing ring is a rubber part.

The fifth aspect of the present application provides a cooking machine, including: the cover according to any one of the technical solutions in the fourth aspect.

Since the cooking machine provided by the present application includes the cover body according to any one of the technical solutions in the fourth aspect, it has all the beneficial effects of the above-mentioned cover body, and it will not be stated here.

In the above technical solution, further, the cooking machine further includes: a base; an outer cover, which is detachably connected with the base, and the outer cover is provided with a third opening, and the first sub-cover of the cover is detachably connected with the outer cover. The cover is used to open or close the third opening, and the base, the outer cover and the first sub-cover enclose the accommodation chamber; the cup body assembly is located in the accommodation chamber, the cup body assembly is detachably connected to the base, and the second sub-cover of the lid body is connected to the The cup body assembly is detachably connected, and the second sub-cover is used to open or close the open end of the cup body assembly.

In this technical solution, the cooking machine also includes a base, an outer cover and a cup assembly, the outer cover is provided with a third opening, the first sub-cover of the cover is detachably connected with the outer cover, and the first sub-cover is used to open or close the third an opening, and the base, the outer cover and the first sub-cover enclose an accommodating cavity for accommodating the cup assembly. That is, the base, the outer cover and the first sub-cover wrap the cup body assembly. That is to say, the base, the outer cover and the first sub-cover cooperate to isolate the cup body assembly from the outside world. In this way, the external transmission of noise generated when the cooking machine is working can be effectively reduced, which is beneficial to improving the noise reduction effect of the product. In addition, the base, the outer cover and the first sub-cover also have the function of heat preservation and heat insulation for the ingredients inside the cup assembly, avoiding scalding the user, and improving the safety and reliability of the product.

When assembling the cooking machine, the cup body assembly is placed on the base first, then the outer cover is covered on the outside of the cup body assembly and assembled with the base, and then the first sub-cover is assembled on the third opening of the outer cover.

When disassembling the cooking machine, the outer cover and the first sub-cover are firstly removed from the base, and then the cup body assembly can be separated from the base.

The sixth aspect of the present application proposes a cooking machine, including: a base; a cover assembly, which is detachably connected to the base, and an accommodation cavity is enclosed between the base and the cover assembly; a cup assembly, located in the accommodation cavity, and The cup body component is detachably connected with the base.

A cooking machine provided by the present application includes a base, a cover assembly and a cup assembly. Through the matching structure of the base and the cover body assembly, an accommodation cavity is enclosed between the base and the cover body assembly, the cup body assembly is located in the accommodation cavity, and the base and the cover body assembly wrap the cup body assembly. That is, the base and cover assembly cooperate to isolate the cup assembly from the outside world. In this way, the external transmission of noise generated when the cooking machine is working can be effectively reduced, which is beneficial to improving the noise reduction effect of the product. In addition, the base and the cover body assembly also have the function of heat preservation and heat insulation for the ingredients inside the cup body assembly, avoiding the occurrence of scalding the user, and helping to improve the safety and reliability of the product.

Specifically, the base is detachably connected to the cover assembly, and the cup assembly is detachably connected to the base.

When assembling the cooking machine, the cup body assembly is placed on the base first, and then the cover body assembly is covered on the outside of the cup body assembly and assembled with the base.

When disassembling the cooking machine, the cover body assembly is firstly removed from the base, and then the cup body assembly can be separated from the base.

According to the cooking machine mentioned above in this application, it may also have the following additional technical features:

In the above technical solution, further, there is a gap between the cup assembly and the cavity wall of the accommodating cavity.

In this technical solution, a gap exists between the cup assembly and the cavity wall of the accommodating cavity by rationally setting the matching structure between the cup assembly and the accommodating cavity, that is, the cup assembly is separated from the cavity wall of the accommodating cavity. This setting can reduce the outward transmission of the noise generated by the cup body assembly when the cooking machine is working, which is beneficial to improve the noise reduction effect of the product. In addition, the gap between the cup body assembly and the cavity wall of the accommodating chamber also has the function of keeping the food in the cup body assembly warm and insulated, avoiding scalding the user, and improving the safety and reliability of the product. .

In any of the above technical solutions, further, the cooking machine further includes: a first sealing member, and the first sealing member is used to seal the joint between the cover assembly and the base.

In this technical solution, the cooking machine further includes a first seal, which is arranged so that the first seal is located at the joint between the cover assembly and the base, so that the joint between the cover assembly and the base can be sealed by the first seal.

This setting can prevent the airflow from leaking from the connection between the cover assembly and the base, and ensure the good sealing of the connection between the cover assembly and the base, so as to limit the flow path of the airflow, which is beneficial to improve the cooling effect of the cooking machine. noise effect.

In addition, the first seal is located at the joint between the cover assembly and the base, which can play a role in damping vibrations. In this way, the hard contact between the joint between the cover assembly and the base can be avoided when the cooking machine is working, which is conducive to further improvement. The noise reduction effect of the cooking machine.

In any of the above technical solutions, further, the side wall of the cover assembly is provided with a first notch, and the side wall of the base is provided with a second notch; the first sealing member includes a first sealing part and a second sealing part; the first A part of the sealing part is located at the first notch, and another part of the first sealing part is located at the second notch; along the height direction of the cup body component, the second sealing part is located between the cover body component and the base.

In this technical solution, the first sealing member includes a first sealing portion, the side wall of the cover body assembly is provided with a first gap, the side wall of the base is provided with a second gap, and the first gap and the second gap enclose a space for accommodating the second gap. A space for the sealed portion. That is, a part of the first sealing part is located at the first notch, and another part of the first sealing part is located at the second notch.

The first sealing member further includes a second sealing portion, and the second sealing portion is located between the cover assembly and the base in the height direction of the cup assembly.

This setting increases the contact area and contact angle between the first seal and the cover assembly and the base, and can block the connection between the cover assembly and the base from multiple directions, so as to improve the safety of the connection between the cover assembly and the base. The airtightness can effectively reduce the amount of air leakage from the connection between the cover body assembly and the base, which is beneficial to improve the noise reduction effect of the cooking machine.

In any of the above technical solutions, further, the cup body assembly includes: a cup body; a crushing knife, located in the cup body; a seat, connected to the cup body, and the seat is detachably connected to the base; a motor, located in the seat, The motor includes a drive shaft, the first end of which extends into the cup and is connected with the crushing knife; the fan blade is located in the seat, and the second end of the drive shaft is connected with the fan blade.

In this technical solution, the cup body assembly includes a cup body, a crushing knife, a seat body, a motor and fan blades. Wherein, the pulverizer is located in the cup body, and the first end of the drive shaft extends into the cup body and is connected with the pulverizer, the motor works, and the drive shaft drives the pulverizer to rotate to crush the food.

It can be understood that when the cooking machine is working, when the pulverizer of the cup assembly rotates to crush the food, the food will hit the inner wall of the cup to generate noise, and the motor rotates at a high speed to generate rotational power, and heat will be generated when the motor is working. The driving shaft of the motor is connected with the fan blade of the cup assembly, and the fan blade is used to dissipate heat from the motor. When the motor works and drives the fan blades to rotate, it will generate vibration noise and turbulent noise of wind resistance. That is to say, the main noise source of the cooking machine also includes the motor and the fan blades.

Therefore, accommodating the cup assembly in the accommodating cavity enclosed by the base and the cover assembly can effectively reduce the operating noise of the cooking machine.

In any of the above technical solutions, further, the base includes: a seat body, the seat body is provided with a fifth air duct, a first opening, an air inlet, and an air outlet, and the air inlet, air outlet, and first opening are all connected to the fifth air duct. The seat body is provided with a second opening, and the first opening communicates with the second opening; the noise reduction device is located in the fifth air duct.

In this technical solution, the base includes a seat body, the seat body is provided with a fifth air duct, a first opening, an air inlet and an air outlet, the fifth air duct communicates with the air inlet, the fifth air duct communicates with the air outlet, and the fifth air duct communicates with the air outlet. The fifth air duct communicates with the first opening, wherein the noise reduction device is located in the fifth air duct.

When the cooking machine is working, the motor drives the fan blades to rotate to inhale air from the air inlet of the base body, and then the air flows through the first opening to the second opening. After passing through the motor and the fan blades, the air flows to the noise reduction device, and then is discharged from the air outlet. base. This setting can ensure that the airflow flows through the noise reduction device, and then is discharged from the air outlet. The noise reduction device is located in the fifth air duct to ensure the effective contact between the noise reduction device and the sound wave, so that the noise reduction device can be used to achieve the effect of sound absorption and noise reduction . And this setting can ensure the effective contact between the airflow and the motor and the fan blades, so as to use the cold air outside to dissipate heat from the motor and the fan, which can ensure the working temperature of the motor and provide structural support for prolonging the service life of the motor.

That is to say, the base, the cover body assembly and the noise reduction device cooperate to realize various forms of noise reduction processing, so as to improve the noise reduction effect of the cooking machine.

In any of the above technical solutions, further, the noise reduction device includes: a housing, a plurality of noise reduction cavities are arranged in the housing, and the housing is also provided with a first air duct, and a plurality of noise reduction chambers are arranged on the side wall of the first air duct There are communication parts, and each noise reduction cavity communicates with at least one communication part; wherein, the first air duct communicates with the fifth air duct.

In this technical solution, the noise reduction device includes a housing, and a plurality of noise reduction cavities are arranged in the housing, and the housing is also provided with a first air channel, and a plurality of communication parts are provided on the side wall of the first air channel, Wherein, each noise reduction cavity communicates with at least one communication portion. The sound waves generated when the cooking machine is in operation are propagated to a plurality of connecting parts through the first air duct, enter into a plurality of noise reduction cavities, and then pass out of the noise reduction device through the plurality of noise reduction cavities. That is to say, for the noise reduction chamber, the inlet and outlet of the noise reduction chamber are of the same structure (ie, the connecting part), and the sound wave is transmitted from the connecting part to the noise reducing chamber, and then transmitted out from the connecting part.

It can be understood that when the cooking machine is working, the target noise reduction frequency characteristics remain unchanged, and the noise reduction device is related to the target noise reduction frequency of the cooking machine, which can achieve the purpose of eliminating the specific target noise reduction frequency. The operating noise of the cooking machine can be reduced in a targeted manner, and the noise reduction effect is good.

In this technical solution, by rationally setting the structure of multiple noise reduction cavities, the multiple noise reduction cavities include a first noise reduction cavity, the first noise reduction cavity includes a resonance pipe and a resonance chamber, and the resonance pipe communicates with the resonance chamber and Connectivity. Specifically, when the cooking machine is in operation, part of the sound waves in the fifth air passage propagate to the resonance chamber through the resonance pipe, and then are transmitted from the resonance chamber to the resonance pipe, and then to the first air passage. That is to say, the entrance and the exit of the first noise reduction chamber have the same structure, and the sound wave is transmitted to the resonance chamber by the resonance pipe, and then transmitted out by the resonance pipe.

In this technical solution, by rationally arranging the structures of the plurality of noise reduction cavities, the plurality of noise reduction cavities include a second noise reduction cavity, wherein the second noise reduction cavity is a wavelength tube, and the wavelength tube is communicated with the connecting part. The size of the wavelength tube is related to the target noise reduction frequency of the cooking machine. When the cooking machine is working, the sound wave in the first air channel is transmitted into the wavelength tube through the connecting part, and then transmitted out from the connecting part. That is to say, the wavelength tube has only one opening, the sound wave is transmitted into the wavelength tube through the connecting part, part of the sound wave is absorbed, and part of the sound wave is transmitted from the same connecting part.

In any of the above technical solutions, further, the base further includes: sound-absorbing cotton located in the fifth air duct, and the sound-absorbing cotton is located around the noise reducing device.

In this technical solution, the base also includes sound-absorbing cotton, which is located in the fifth air duct, and the sound-absorbing cotton can play a role in noise reduction, that is, the sound-absorbing cotton and the noise reduction device cooperate to achieve multi-level reduction of sound waves. Noise processing is beneficial to improve the noise reduction effect of the cooking machine.

Specifically, the cooking machine includes a cup assembly, and the cup assembly includes a seat, a motor and a fan blade are arranged in the seat, the motor drives the fan blade to rotate, and the seat communicates with the fifth air duct. When working, the motor drives the fan blades to rotate to inhale air from the air inlet of the base. After passing through the sound-absorbing cotton, the motor and the fan blades, the air flows to the noise reduction device, and then is discharged from the cooking machine through the air outlet. That is to say, after the outside cold air enters the fifth air duct from the air inlet, it first passes through the sound-absorbing cotton for noise reduction, and then passes through the noise reduction device for noise reduction, realizing multi-stage noise reduction processing. The sound-absorbing cotton is located around the noise reduction device, providing effective structural support for the multi-level noise reduction treatment.

In any of the above technical solutions, further, the top of the seat body is provided with a first opening, the bottom of the seat body is provided with an air inlet and an air outlet, at least a part of the air inlet is arranged correspondingly to the sound-absorbing cotton, and at least a part of the air outlet is arranged in correspondence with the sound-absorbing cotton. Corresponding settings for the first air duct.

The cup assembly of the cooking machine is detachably arranged on the top of the base, and the first opening is arranged on the top of the seat body, which can ensure that the airflow entering the fifth air channel from the air inlet can flow from the first opening to the motor of the cup assembly. That is, the smoothness of the air flow path is ensured.

In any of the above technical solutions, further, the cover assembly includes: an outer cover, which is detachably connected to the base, and the outer cover is provided with a third opening; a first sub-cover, which is detachably connected to the outer cover, and the first sub-cover is used for Open or close the third opening.

In this technical solution, the cover assembly includes an outer cover and a first sub-cover, the outer cover is detachably connected to the base, and the first sub-cover is detachably connected to the outer cover. This setting facilitates the cleaning and cleaning of the cover body components, and can ensure the cleanliness of the product in use.

In any of the above technical solutions, further, the first sub-cover is provided with a passage and a first chamber, the first sub-cover is also provided with a first air inlet and an air outlet, and the passage communicates with the first air inlet and the air outlet ; The pipe wall of the channel is provided with a communication structure, and the first chamber communicates with the communication structure; wherein, the flow cross-sectional area of the channel is smaller than the flow cross-sectional area of the first chamber.

In this technical solution, the first sub-cover is provided with a channel and a first chamber, the first sub-cover is also provided with a first air inlet and an air outlet, the channel communicates with the first air inlet, and the channel communicates with the air outlet , that is, the channel communicates with the first air inlet and the air outlet. The hot air generated when the cup body assembly is working can be discharged from the first sub-cover through the channel, which provides structural support for the safety and reliability of the cooking machine.

Further, a communication structure is provided on the pipe wall of the channel, and the first chamber communicates with the communication structure. By rationally setting the matching structure of the channel and the first chamber, the flow cross-sectional area of the channel is smaller than the flow cross-sectional area of the first chamber, that is, the channel and the first chamber are jointly constructed into a resonant cavity structure. When reaching the resonant chamber, the part of the sound wave that is close to the natural frequency of the resonant cavity structure causes the resonance of the resonant cavity structure. During the vibration process, the sound wave in the resonant cavity structure rubs against the channel and the inner wall of the first chamber, converting mechanical energy It is heat energy, thereby consuming sound energy, which can effectively achieve the effect of sound absorption and noise reduction.

In this technical solution, there are multiple first chambers, so the structures of multiple first chambers can be set in a targeted manner according to the target noise reduction frequency, for example, multiple specifications of the first chamber can be set for multiple different frequencies. One chamber, another example, setting up multiple first chambers of the same specification for the same frequency is conducive to realizing broadband sound absorption and noise reduction, which can meet the diverse needs of users, and is conducive to improving product performance and market competitiveness. .

In any of the above technical solutions, further, the cooking machine further includes: a second sub-cover, which is detachably connected with the first sub-cover, and the second sub-cover is used to open or close the open end of the cup assembly; The sub-cover is provided with a second air inlet, and a second chamber is enclosed between the first sub-cover and the second sub-cover; wherein, the cross-sectional area of the first air inlet and the cross-sectional area of the second air inlet The areas are smaller than the flow cross-sectional area of the second chamber.

In this technical solution, the cooking machine further includes: a second sub-cover, the second sub-cover is detachably connected to the first sub-cover, and a second chamber is enclosed between the first sub-cover and the second sub-cover. The second chamber communicates with the first air inlet and the second air inlet. The hot air generated when the cooking machine is in operation enters into the second chamber through the second air inlet, then flows to the passage through the first air inlet, and then is discharged from the passage. That is to say, the hot air first passes through the second chamber, and then flows to the channel. This setting provides structural support for the safety and reliability of the cooking machine.

Further, by rationally setting the matching structure of the first air inlet, the second air inlet and the second chamber, the flow cross-sectional area of the first air inlet and the flow cross-sectional area of the second air inlet are both smaller than The cross-sectional area of the second chamber is equivalent to the fact that the sound wave enters a larger second chamber with a smaller volume (such as the area surrounded by the wall of the second air inlet), and is then A small volume area (such as the area surrounded by the wall of the first air inlet) is discharged to achieve the adaptation of the acoustic impedance. The sound wave is at the wall of the first air inlet, the cavity of the second chamber The wall of the second air inlet and the wall of the second air inlet reflect and interfere, so that the sound energy can be consumed, and the effect of sound absorption and noise reduction can be effectively achieved.

The second air inlet, the second chamber and the first air inlet cooperate to realize the first noise reduction treatment of sound waves, and the passage, the communication structure and the first chamber cooperate to realize the second reduction of sound waves. noise processing. That is to say, the sound waves flow through the second sub-cover and the first sub-cover, and the second sub-cover and the first sub-cover can perform multi-level noise reduction processing on the sound waves, which is beneficial to improve the noise reduction effect of the cooking machine.

In any of the above technical solutions, further, the cooking machine further includes: a second sealing member, the second sealing member is used to seal the connection between the outer cover and the first sub-cover and the second sub-cover.

In this technical solution, the cooking machine also includes a second sealing member, which is arranged so that the second sealing member is located at the connection between the outer cover and the first sub-cover and the second sub-cover, so as to seal the outer cover and the first sub-cover with the second sealing member. The junction of the cover and the second sub-cover.

This setting can prevent the airflow from leaking from the connection between the outer cover and the first sub-cover and the second sub-cover, and ensure the good sealing of the connection between the outer cover and the first sub-cover and the second sub-cover, so as to define The flow path of the airflow is conducive to improving the noise reduction effect of the cooking machine.

In addition, the second seal is located at the connection between the outer cover and the first sub-cover and the second sub-cover, which can play a role in damping vibration, so that when the cooking machine is working, it can avoid the gap between the outer cover and the first sub-cover and the second sub-cover. The hard contact between them is conducive to further improving the noise reduction effect of the cooking machine.

Specifically, the second sealing element is a sealing ring. Sealing rings are provided at the joints of the outer cover and the first sub-cover and the second sub-cover. Furthermore, the sealing ring is a rubber part.

In any one of the above technical solutions, further, the cooking machine further includes: a shock absorber located between the cup assembly and the base.

In this technical solution, the cooking machine also includes a shock absorber, which is located between the cup body assembly and the base. This arrangement can avoid hard contact between the cup body assembly and the base, and is conducive to further improving the noise reduction of the cooking machine. Effect.

Additional aspects and advantages of the application will become apparent in the description which follows, or may be learned by practice of the application.

Description of drawings

The above and/or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, wherein:

FIG. 1 shows a schematic structural diagram of a first viewing angle of a noise reduction device according to a first embodiment of the present application;

Fig. 2 shows a schematic structural diagram of a second viewing angle of the noise reduction device of the first embodiment of the present application;

Fig. 3 shows a schematic structural diagram of a third viewing angle of the noise reduction device of the first embodiment of the present application;

FIG. 4 shows a schematic structural diagram of a first viewing angle of a noise reduction device according to a second embodiment of the present application;

Fig. 5 shows a schematic structural diagram of a second viewing angle of a noise reduction device according to a second embodiment of the present application;

Fig. 6 shows a schematic structural diagram of a third viewing angle of a noise reduction device according to a second embodiment of the present application;

FIG. 7 shows a schematic structural diagram of a fourth viewing angle of the noise reduction device of the second embodiment of the present application;

FIG. 8 shows a schematic structural diagram of a fifth viewing angle of a noise reduction device according to a second embodiment of the present application;

FIG. 9 shows a schematic structural diagram of a sixth viewing angle of the noise reduction device according to the second embodiment of the present application;

Fig. 10 shows a partial structural schematic diagram of a first viewing angle of a noise reduction device according to a second embodiment of the present application;

Fig. 11 shows a partial structural schematic diagram of a second viewing angle of a noise reduction device according to a second embodiment of the present application;

Fig. 12 shows a partial structural schematic diagram of a third viewing angle of the noise reduction device of the second embodiment of the present application;

Fig. 13 shows a partial structural schematic diagram of the fourth viewing angle of the noise reduction device of the second embodiment of the present application;

Fig. 14 shows a partial structural schematic diagram of a fifth viewing angle of the noise reduction device of the second embodiment of the present application;

Fig. 15 shows a partial structural schematic diagram of the sixth viewing angle of the noise reduction device of the second embodiment of the present application;

Fig. 16 shows an exploded view of a first viewing angle of the noise reduction device of the second embodiment of the present application;

Fig. 17 shows an exploded view of a second viewing angle of the noise reduction device of the second embodiment of the present application;

Fig. 18 shows an exploded view of a third viewing angle of the noise reduction device of the second embodiment of the present application;

Fig. 19 shows an exploded view of a fourth viewing angle of the noise reduction device of the second embodiment of the present application;

Fig. 20 shows a schematic structural view of the shell body of the second embodiment of the present application;

Fig. 21 shows a partial structural schematic diagram of a first viewing angle of a cooking machine according to an embodiment of the present application;

Fig. 22 shows a partial structural schematic diagram of a second viewing angle of a cooking machine according to an embodiment of the present application;

Fig. 23 is a partial enlarged view of A of the cooking machine shown in Fig. 22;

Fig. 24 shows a partial structural schematic diagram of a cooking machine according to an embodiment of the present application;

Fig. 25 shows a schematic structural diagram of a first viewing angle of a cooking machine according to an embodiment of the present application;

Fig. 26 shows a schematic structural diagram of a second viewing angle of a cooking machine according to an embodiment of the present application;

Fig. 27 shows a schematic structural view of a cooking machine in a third perspective according to an embodiment of the present application;

Fig. 28 shows a partial structural schematic diagram of a base according to an embodiment of the present application;

Fig. 29 shows a partial structural schematic diagram of a first sub-cover according to an embodiment of the present application;

Figure 30 shows an exploded view of the first sub-cover of an embodiment of the present application;

Fig. 31 shows a partial structural schematic diagram of a second sub-cover according to an embodiment of the present application;

Fig. 32 shows the data graph of the noise reduction of the cooking machine of the present application and the cooking machine in the related art;

Fig. 33 shows a schematic structural view of a cover body in a first viewing angle according to an embodiment of the present application;

Fig. 34 shows a schematic structural view of a cover body in a second viewing angle according to an embodiment of the present application;

Fig. 35 shows a schematic structural diagram of a cover body in a third viewing angle according to an embodiment of the present application;

Figure 36 shows an exploded view of the cover of an embodiment of the present application;

Figure 37 shows a cross-sectional view of a cover according to an embodiment of the present application;

Fig. 38 shows a cross-sectional view of a cooking machine according to an embodiment of the present application;

Fig. 39 is a partial enlarged view of A of the cooking machine shown in Fig. 38;

Figure 40 shows a cross-sectional view of a cover and an outer cover according to an embodiment of the present application;

Figure 41 shows a schematic structural view of a second sub-cover according to an embodiment of the present application;

Figure 42 shows a cross-sectional view of a second sub-cover according to an embodiment of the present application;

Fig. 43 shows a structural view of a first viewing angle of a cooking machine according to an embodiment of the present application;

Fig. 44 shows a structural view of a second viewing angle of a cooking machine according to an embodiment of the present application;

Fig. 45 shows a structural view of a cooking machine in a third perspective according to an embodiment of the present application;

Fig. 46 shows a structural view of a noise reduction device according to an embodiment of the present application from a first viewing angle;

Fig. 47 shows a structural view of a second viewing angle of a noise reduction device according to an embodiment of the present application;

Fig. 48 shows a structural view of a noise reduction device according to an embodiment of the present application from a third perspective;

Fig. 49 shows a partial structural schematic diagram of a first viewing angle of a noise reduction device according to an embodiment of the present application;

Fig. 50 shows a partial structural schematic diagram of a second viewing angle of a noise reduction device according to an embodiment of the present application;

Fig. 51 shows a partial structural schematic diagram of a third viewing angle of a noise reduction device according to an embodiment of the present application;

Fig. 52 shows a partial structural schematic diagram of a fourth viewing angle of a noise reduction device according to an embodiment of the present application;

Fig. 53 shows a partial structural schematic diagram of a fifth viewing angle of a noise reduction device according to an embodiment of the present application;

Figure 54 shows an exploded view of a noise reduction device according to an embodiment of the present application;

Fig. 55 shows a partial structural schematic diagram of a base and a noise reduction device according to an embodiment of the present application;

Fig. 56 shows a schematic structural view of a cooking machine in a first viewing angle according to an embodiment of the present application;

Fig. 57 shows a schematic structural diagram of a second viewing angle of a cooking machine according to an embodiment of the present application;

Fig. 58 shows a schematic structural view of a cooking machine in a third perspective according to an embodiment of the present application;

Fig. 59 shows a schematic structural diagram of a fourth viewing angle of a cooking machine according to an embodiment of the present application;

Fig. 60 shows a cross-sectional view of a cooking machine according to an embodiment of the present application at a first viewing angle;

Fig. 61 shows a cross-sectional view of a cooking machine according to an embodiment of the present application at a second viewing angle;

Fig. 62 is a partial enlarged view of A of the cooking machine shown in Fig. 61;

Fig. 63 is a partial enlarged view of place B of the cooking machine shown in Fig. 61;

Fig. 64 shows a structural schematic diagram of a first viewing angle of a cup assembly, a base and a second sub-cover according to an embodiment of the present application;

Fig. 65 shows a structural schematic diagram of a cup assembly, a base and a second sub-cover according to an embodiment of the present application from a second viewing angle;

Figure 66 shows a schematic structural view of a cup assembly according to an embodiment of the present application;

Figure 67 shows a schematic structural view of a base according to an embodiment of the present application;

Fig. 68 shows a partial structural schematic diagram of a base according to an embodiment of the present application;

Fig. 69 shows a partial structural schematic diagram of a base according to an embodiment of the present application;

Figure 70 shows a cross-sectional view of a base of an embodiment of the present application;

Figure 71 shows a partial cross-sectional view of a base of an embodiment of the present application;

Fig. 72 shows a schematic structural diagram of a first viewing angle of a noise reduction device according to an embodiment of the present application;

Fig. 73 shows a schematic structural diagram of a second viewing angle of a noise reduction device according to an embodiment of the present application;

Fig. 74 shows a schematic structural diagram of a third viewing angle of a noise reduction device according to an embodiment of the present application;

Fig. 75 shows a schematic structural diagram of a fourth viewing angle of a noise reduction device according to an embodiment of the present application;

Fig. 76 shows a schematic structural diagram of a fifth viewing angle of a noise reduction device according to an embodiment of the present application;

Figure 77 shows a cross-sectional view of a noise reduction device according to an embodiment of the present application;

Fig. 78 shows a partial structural schematic diagram of a noise reduction device according to an embodiment of the present application;

Fig. 79 shows a partial structural schematic diagram of a noise reduction device according to an embodiment of the present application;

Fig. 80 shows a partial structural schematic diagram of a noise reduction device according to an embodiment of the present application;

Fig. 81 shows a partial structural schematic diagram of a noise reduction device according to an embodiment of the present application;

Figure 82 shows an exploded view of a noise reduction device according to an embodiment of the present application;

Fig. 83 shows a structural schematic diagram of a first viewing angle of the outer cover, the first sub-cover and the second sub-cover according to an embodiment of the present application;

Fig. 84 shows a structural schematic diagram of a second viewing angle of the outer cover, the first sub-cover and the second sub-cover according to an embodiment of the present application;

Fig. 85 shows a schematic structural view of the first sub-cover according to an embodiment of the present application from a first viewing angle;

Fig. 86 shows a schematic structural view of the second viewing angle of the first sub-cover according to an embodiment of the present application;

Fig. 87 shows a schematic structural diagram of a third viewing angle of the first sub-cover according to an embodiment of the present application;

Fig. 88 shows a cross-sectional view of a first sub-cover according to an embodiment of the present application at a first viewing angle;

Fig. 89 shows a cross-sectional view of a second viewing angle of a first sub-cover according to an embodiment of the present application;

Figure 90 shows an exploded view of a first sub-cover according to an embodiment of the present application;

Fig. 91 shows a cross-sectional view of a first sub-cover according to an embodiment of the present application at a first viewing angle;

Fig. 92 shows a cross-sectional view of a second viewing angle of a first sub-cover according to an embodiment of the present application;

Fig. 93 shows a cross-sectional view of a first sub-cover in a third viewing angle according to an embodiment of the present application;

Figure 94 shows an exploded view of the partial structure of the first sub-cover according to an embodiment of the present application;

Figure 95 shows an exploded view of the first sub-cover of one embodiment of the present application;

Fig. 96 shows an exploded view of the structure of the first casing in a first viewing angle according to an embodiment of the present application;

FIG. 97 shows an exploded view of the structure of the first housing in a second viewing angle according to an embodiment of the present application;

Fig. 98 shows a schematic structural view of a cup body and a second sub-cover according to an embodiment of the present application;

Fig. 99 shows a schematic structural view of a second sub-cover in a first viewing angle according to an embodiment of the present application;

Fig. 100 shows a schematic structural diagram of a second sub-cover in a second viewing angle according to an embodiment of the present application;

Fig. 101 shows a schematic structural diagram of a third viewing angle of a second sub-cover according to an embodiment of the present application;

FIG. 102 shows a cross-sectional view of a second sub-cover according to an embodiment of the present application.

Wherein, the corresponding relationship between the reference numerals and the part names in Fig. 1 to Fig. 102 is:

100 cooking machine, 110 base, 112 seat body, 116 first opening, 118 air inlet, 119 air outlet, 120 cover body assembly, 122 outer cover, 130 accommodating chamber, 140 cup body assembly, 142 cup body, 144 crushing knife, 146 Seat body, 148 motor, 150 drive shaft, 152 fan blade, 160 first seal, 162 first seal part, 164 second seal part, 170 noise reduction device, 172 housing, 174 first air duct, 176 communication part , 178 first noise reduction chamber, 180 resonance pipe, 182 resonance chamber, 184 second noise reduction chamber, 186 shell body, 188 partition, 192 enclosure, 194 slot, 196 guide column, 200 sink, 202 water leakage Hole, 204 air guide groove, 210 sound-absorbing cotton, 220 first sub-cover, 222 channel, 224 first chamber, 226 first air inlet, 228 air outlet, 230 communication structure, 232 first sub-shell, 234 second Sub-shell, 236 cover plate, 238 first surrounding edge, 240 second sub-cover, 242 second air inlet, 244 second chamber, 246 second surrounding edge, 250 second sealing part, 260 third sealing part, 270 is the fifth sealing part, 280 is the third edge, 290 is the cover, 320 is the first communication port, 330 is the second sealing part, 340 is the vibration damping part.

Detailed ways

In order to better understand the above-mentioned purpose, features and advantages of the present application, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

In the following description, many specific details are set forth in order to fully understand the application, but the application can also be implemented in other ways different from those described here, therefore, the protection scope of the application is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.

The noise reduction device 170 , the base 110 , the cover and the cooking machine 100 according to some embodiments of the present application are described below with reference to FIGS. 1 to 102 .

Example 1:

As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8 and Fig. 9, the embodiment of the first aspect of the present application proposes a noise reduction device 170 for cooking The machine 100 includes: a housing 172, a plurality of noise reduction chambers are arranged in the housing 172, and the housing 172 is also provided with a first air channel 174, and a plurality of communicating parts 176 are provided on the side wall of the first air channel 174, Each noise reduction chamber communicates with at least one communication portion 176 .

In detail, the noise reduction device 170 includes a housing 172, a plurality of noise reduction cavities are arranged in the housing 172, and the housing 172 is also provided with a first air channel 174, on the side wall of the first air channel 174 there are multiple communication parts 176, wherein each noise reduction cavity communicates with at least one communication part 176. The sound waves generated when the cooking machine 100 is in operation propagate through the first air duct 174 to the plurality of communicating parts 176 , enter into the plurality of noise reduction chambers, and then pass out of the noise reduction device 170 through the plurality of noise reduction chambers. That is to say, for the noise reduction chamber, the inlet and outlet of the noise reduction chamber are of the same structure (ie, the communication part 176 ), and the sound waves are transmitted from the communication part 176 into the noise reduction chamber, and then transmitted out from the communication part 176 .

By rationally setting the structure of the noise reduction device 170, the noise reduction device 170 includes a plurality of noise reduction chambers, and the sound waves in the noise reduction chambers rub against the inner wall of the noise reduction chamber to convert mechanical energy into heat energy, thereby consuming sound energy, and can effectively achieve The effect of sound absorption and noise reduction.

It can be understood that when the cooking machine 100 is working, the characteristic of the target noise reduction frequency remains unchanged, and the noise reduction device 170 is correlated with the target noise reduction frequency of the cooking machine 100 , which can achieve the purpose of eliminating the specific target noise reduction frequency. The operation noise of the cooking machine 100 can be reduced in a targeted manner, and the noise reduction effect is good.

In this embodiment, each noise reduction chamber communicates with a communication portion 176 .

In some other embodiments, each noise reduction cavity communicates with a plurality of communication parts 176 .

Further, a plurality of noise reduction cavities are located on the peripheral side of the first air duct 174 .

Among them, in this technical solution, by rationally setting the matching structure of multiple noise reduction cavities and the first air duct 174, the multiple noise reduction cavities are located on the peripheral side of the first air duct 174, so that the first wind can be reasonably utilized. The structure of the channel 174 provides effective and reliable structural support to ensure the matching dimensions of the multiple communicating portions 176 and the multiple noise reduction cavities.

Example 2:

As shown in Figures 1 to 9, on the basis of Embodiment 1, Embodiment 2 provides a noise reduction device 170 for a cooking machine 100, including: a housing 172, and multiple noise reduction devices are arranged in the housing 172 cavity, and the housing 172 is also provided with a first air channel 174 , a plurality of communication parts 176 are provided on the side wall of the first air channel 174 , and each noise reduction cavity communicates with at least one communication part 176 .

Further, as shown in Fig. 10, Fig. 11, Fig. 12 and Fig. 13, the plurality of noise reduction chambers include a first noise reduction chamber 178, and the first noise reduction chamber 178 includes a resonance pipe 180 and a resonance chamber 182, and the resonance pipe 180 The resonance chamber 182 is communicated with the communication portion 176 ; wherein, the flow cross-sectional area of the resonance pipe 180 is smaller than the flow cross-sectional area of the resonance chamber 182 .

In detail, by rationally setting the structure of multiple noise reduction cavities, the multiple noise reduction cavities include the first noise reduction cavity 178, the first noise reduction cavity 178 includes a resonance pipe 180 and a resonance chamber 182, and the resonance pipe 180 communicates with the resonance Chamber 182 and communication portion 176 . Specifically, when the cooking machine 100 is working, part of the sound waves in the cooking machine 100 propagate to the resonance chamber 182 through the resonance pipe 180 , and then are transmitted from the resonance chamber 182 to the resonance pipe 180 and then to the first air duct 174 . That is to say, the entrance and exit of the first noise reduction chamber 178 are of the same structure, and the sound wave is transmitted from the resonance pipe 180 to the resonance chamber 182 , and then transmitted out from the resonance pipe 180 .

By reasonably setting the matching structure of the resonance pipe 180 and the resonance chamber 182, the flow cross-sectional area of the resonance pipe 180 is smaller than the flow cross-sectional area of the resonance chamber 182, that is, the resonance pipe 180 and the resonance chamber 182 are jointly configured to resonate Cavity structure, when the sound wave reaches the resonant chamber 182, the part of the sound wave that is close to the natural frequency of the resonant cavity structure causes the resonance of the resonant cavity structure. The friction of the inner wall of the chamber 182 converts mechanical energy into thermal energy, thereby consuming sound energy, which can effectively achieve the effect of sound absorption and noise reduction.

In addition, the flow cross-sectional area of the resonance pipe 180 is smaller than the flow cross-sectional area of the resonance chamber 182, that is, the structure of the first noise reduction cavity 178 is reasonably arranged, which is conducive to the coupling of sound waves with the first noise reduction cavity 178, thereby enabling The noise reduction effect of the noise reduction device 170 is guaranteed.

Further, the flow cross-sectional area S1 of the resonance pipe 180, the volume V1 of the resonance chamber 182, the length L1 of the resonance pipe 180, the sound velocity c1 and the target noise reduction frequency f1 of the cooking machine 100 satisfy:

L1≥2mm.

Wherein, when the cooking machine 100 is working, the target noise reduction frequency characteristic remains unchanged, the flow cross-sectional area S1 of the resonance pipe 180, the volume V1 of the resonance chamber 182, the length L1 of the resonance pipe 180, and the sound velocity c1 are all related to the cooking machine. The target noise reduction frequency f1 of 100 is relevant. That is to say, while ensuring the noise reduction effect of the noise reduction device 170, it can effectively adapt to the internal space layout of the cooking machine 100, which is conducive to reducing the occupancy rate of the noise reduction device 170 to the internal space of the cooking machine 100, and further helps to realize the cooking machine. 100's of miniaturization.

Specifically, the length L1 of the resonance pipe 180 includes 3 mm, 4 mm, 5 mm, 6 mm, etc., which are not listed here.

Example 3:

As shown in Figures 1 to 9, on the basis of Embodiment 1 or Embodiment 2, Embodiment 3 provides a noise reduction device 170 for a cooking machine 100, including: a housing 172, which is set inside the housing 172 There are multiple noise reduction chambers, and the housing 172 is also provided with a first air duct 174 , and a plurality of communication parts 176 are provided on the side wall of the first air duct 174 , and each noise reduction chamber communicates with at least one communication part 176 .

Further, as shown in FIG. 12 and FIG. 13 , the multiple noise reduction cavities include a second noise reduction cavity 184 , the second noise reduction cavity 184 is a wavelength tube, and the wavelength tube communicates with the communication part 176 .

In detail, by rationally arranging the structures of the multiple noise reducing cavities, the multiple noise reducing cavities include the second noise reducing cavity 184 , wherein the second noise reducing cavity 184 is a wavelength tube, and communicates the wavelength tube with the communicating portion 176 . The size of the wavelength tube is related to the target noise reduction frequency of the cooking machine 100 . When the cooking machine 100 is working, the sound wave in the first air duct 174 is transmitted into the wavelength tube through the connecting portion 176 , and then transmitted out through the connecting portion 176 . That is to say, the wavelength tube has only one opening, the sound wave is transmitted into the wavelength tube through the connecting portion 176 , part of the sound wave is absorbed, and part of the sound wave is transmitted through the same connecting portion 176 .

When the cooking machine 100 is working, the noise frequency characteristics remain unchanged. Since the size of the wavelength tube is related to the target noise reduction frequency of the cooking machine 100, the purpose of eliminating the noise corresponding to the target noise reduction frequency can be achieved. By setting the wavelength tube corresponding to the target noise reduction frequency, the operating noise of the cooking machine 100 can be reduced in a targeted manner, and the noise reduction effect is good.

Specifically, the sound wave is introduced into the wavelength tube through the connecting part 176, and is reflected after reaching the bottom of the wavelength tube. The reflected wave and the incident wave are superimposed to form a standing wave. When part 176, resonance occurs, and at this time the amplitude of the particle is the largest, and the sound energy consumed is also the largest, so it has a significant sound absorption effect at the resonance frequency.

Specifically, a plurality of noise reduction cavities include at least one first noise reduction cavity 178 and at least one second noise reduction cavity 184; or a plurality of noise reduction cavities include a plurality of first noise reduction cavities 178; or a plurality of noise reduction cavities include A plurality of second noise reduction cavities 184, one second noise reduction cavity 184 is used to eliminate a frequency band of noise, and one first noise reduction cavity 178 is used to eliminate a range of frequency noise. That is to say, the number of the first noise reduction cavity 178 and the number of the second noise reduction cavity 184 can be set according to actual usage requirements, so as to achieve the target frequency noise.

For example, the wide-band sound absorption can be achieved by utilizing the coordination relationship between the multiple first noise-reducing cavities 178 of different specifications and the multiple second noise-reducing cavities 184 of different specifications.

Specifically, the first noise reduction chamber 178 includes a resonance pipe 180 and a resonance chamber 182 . The first noise reduction chamber 178 belongs to a narrowband muffler. The noise reduction frequency of the second noise reduction cavity 184 (that is, the wavelength tube) is related to the length of the wavelength tube. The longer the wavelength tube, the lower the noise reduction frequency. Therefore, the first noise reduction cavity 178 and the second noise reduction cavity 184 are mutually With the combination, the anechoic bandwidth can be increased and the noise in a wide frequency range can be reduced.

Further, the sound velocity c2, the length L2 of the wavelength tube and the target noise reduction frequency f2 of the cooking machine 100 satisfy:

Wherein, when the cooking machine 100 is working, the target noise reduction frequency characteristic remains unchanged, and the sound velocity c2, the length L2 of the wavelength tube and the target noise reduction frequency f2 of the cooking machine 100 satisfy:

That is, the sound velocity c2, the length L2 of the wavelength tube and the target noise reduction frequency f2 of the cooking machine 100 are related. The length of the wavelength tube is inversely related to the target noise reduction frequency. The longer the length of the wavelength tube, the lower the target noise reduction frequency; the shorter the length of the wavelength tube, the higher the target noise reduction frequency.

Example 4:

As shown in Figures 1 to 9, on the basis of any of the above-mentioned embodiments, Embodiment 4 provides a noise reduction device 170 for a cooking machine 100, including: a housing 172, in which multiple The housing 172 is also provided with a first air channel 174 , and a plurality of communication parts 176 are provided on the side wall of the first air channel 174 , and each noise reduction cavity communicates with at least one communication part 176 .

Further, the target noise reduction frequencies corresponding to any two noise reduction cavities among the plurality of noise reduction cavities are different.

In detail, by rationally setting the structures of multiple noise reduction cavities, the target noise reduction frequencies corresponding to any two noise reduction cavities in the multiple noise reduction cavities are different, so that multiple target noise reduction frequencies can be reduced by using multiple noise reduction cavities. The noise corresponding to the noise frequency is processed for noise reduction, which provides an effective and reliable structural support for broadband sound absorption.

In some other embodiments, the target noise reduction frequencies corresponding to some of the multiple noise reduction cavities are the same.

Example 5:

As shown in Figures 1 to 9, on the basis of any of the above-mentioned embodiments, Embodiment 5 provides a noise reduction device 170 for a cooking machine 100, including: a housing 172, in which multiple The housing 172 is also provided with a first air channel 174 , and a plurality of communication parts 176 are provided on the side wall of the first air channel 174 , and each noise reduction cavity communicates with at least one communication part 176 .

Further, as shown in Figure 10, Figure 11, Figure 12, Figure 13, Figure 14, Figure 15, Figure 16, Figure 17, Figure 18, Figure 19 and Figure 20, the housing 172 includes a multi-layer housing body 186, the first An air duct 174 includes a plurality of sub-air ducts, and each shell body 186 is provided with a sub-air duct; any two adjacent shell bodies 186 enclose a plurality of noise reduction cavities.

In detail, by rationally setting the structure of the housing 172 , the housing 172 includes a multi-layer housing body 186 , and any adjacent two layers of the housing body 186 enclose a plurality of noise reduction cavities. That is to say, there are multiple layers of areas inside the housing 172, and multiple noise reduction cavities are arranged in each layer area. This setting reasonably arranges the internal space of the noise reduction device 170, increases the number of noise reduction cavities, and is beneficial to According to the needs of use, the structure of multiple noise reduction cavities is set in a targeted manner, which provides effective structural support for noise reduction corresponding to multiple target noise reduction frequencies.

In addition, the first air duct 174 includes a plurality of sub-air ducts, and one sub-air duct is provided on each shell body 186 . After the multi-layer shell body 186 is assembled, any two adjacent sub-air ducts among the plurality of sub-air ducts are correspondingly connected, that is, the plurality of sub-air ducts enclose the first air duct 174 .

Further, as shown in FIG. 10 to FIG. 20 , the shell body 186 includes: a partition 188, the partition 188 is provided with a through hole, and the sub-air channel is located on the periphery of the through hole; the surrounding plate 192 is arranged on the partition 188, In any two adjacent shell bodies 186 , the shroud 192 of one shell body 186 abuts against the partition 188 of the other shell body 186 , and a plurality of noise reduction cavities are enclosed between the partition 188 and the shroud 192 .

In detail, the shell body 186 includes a partition 188 and a surrounding plate 192 . The partition 188 is provided with a through hole, and the sub-air channel is located on the peripheral side of the through hole, and the through hole can ensure that any two adjacent sub-air channels among the plurality of sub-air channels are connected.

In addition, the surrounding plate 192 is disposed on the partition 188 , and in any two adjacent shell bodies 186 , the surrounding plate 192 of one shell body 186 abuts against the partition plate 188 of the other shell body 186 . That is, the coaming plate 192 of any adjacent two-layer shell body 186 cooperates with the partition plate 188, while meeting the use requirements of forming a plurality of noise reduction chambers, it reduces the input of materials surrounding the noise reduction chambers, which is beneficial to reduce The production cost of the product. At the same time, while ensuring the volume of multiple noise reduction chambers, this setting is conducive to reducing the overall size of the noise reduction device 170, thereby reducing the occupancy rate of the noise reduction device 170 to the internal space of the cooking machine 100, which is convenient for the cooking machine 100. Reasonable layout of other components of the device.

It can be understood that, in any two adjacent shell bodies 186 , the surrounding plate 192 of one shell body 186 abuts against the partition plate 188 of the other shell body 186 . That is, the surrounding plate 192 of one shell body 186 is connected with the partition plate 188 of the other shell body 186 to ensure the airtight requirement of the noise reduction chamber.

Further, in any two adjacent shell bodies 186 , the surrounding plates 192 of one shell body 186 are alternately arranged with the surrounding plates 192 of the other shell body 186 .

Wherein, by rationally setting the arrangement positions of the shrouds 192 of the adjacent two-layer shell bodies 186, in any adjacent two-layer shell bodies 186, the shrouds 192 of one shell body 186 are connected with the shrouds 192 of the other shell body 186. The staggered arrangement is beneficial to increase the distance between two adjacent baffles in each shell body 186 while meeting the requirement of forming multiple noise reduction cavities, so that the processing difficulty of producing the shell body 186 can be reduced , which is beneficial to reduce the production cost and prolong the service life of the mold for producing the shell body 186 .

Further, the noise reduction device 170 also includes a seal, which is used to seal the connection between any two adjacent shell bodies 186 .

Wherein, the noise reduction device 170 also includes a seal, and the seal is located at the junction of any adjacent two-layer shell body 186, that is, the joint of any adjacent two-layer shell body 186 is sealed by the seal, so that the air flow can be avoided. Leakage from the junction of any adjacent two-layer shell body 186 ensures good sealing of the joint between the adjacent two-layer shell bodies 186, thereby limiting the flow path of the airflow, thereby ensuring effective communication between the noise reduction chamber and the sound wave. The contact provides an effective and reliable structural support for improving the noise reduction effect of the noise reduction device 170 .

In addition, the sealing member is located at the junction of any adjacent two-layer shell bodies 186, which can play a role in damping vibration. In this way, the hard contact between the adjacent two-layer shell bodies 186 can be avoided when the cooking machine 100 is working, which is beneficial to reduce The noise reduction effect of the noise reduction device 170 is further improved.

Further, as shown in Figures 16 to 19, the outermost two-layer shell bodies 186 in the multi-layer shell bodies 186 are denoted as the first shell body 186 and the second shell body 186, the first shell body 186 and the second shell body 186 At least one of the shell bodies 186 is provided with a guide post 196 , and the shell body 186 located between the first shell body 186 and the second shell body 186 is provided with a guide hole, and the guide post 196 can be inserted into the guide hole.

Wherein, by reasonably setting the matching structure of the multi-layer shell body 186, the outermost two-layer shell body 186 in the multi-layer shell body 186 is recorded as the first shell body and the second shell body, and the first shell body is set There is a guide column 196, or the second shell body is provided with the guide column 196, or both the first shell body and the second shell body are provided with the guide column 196. In addition, the housing body 186 located between the first housing body and the second housing body is provided with a guide hole. In this way, when the multi-layer shell body 186 is assembled, the guide post 196 can be inserted into the guide hole, so as to complete the assembly of the multi-layer shell body 186 . The guide post 196 is mated with the guide hole to limit the relative displacement of the two adjacent shell bodies 186 , so as to ensure the matching dimensions between the two adjacent shell bodies 186 , thereby ensuring the overall dimensions of the noise reducing device 170 .

In addition, the guide post 196 cooperates with the guide hole to guide the assembly of the adjacent two-side shell bodies 186 , which reduces the difficulty of matching the adjacent two-side shell bodies 186 and is beneficial to improving the disassembly efficiency of the multi-layer shell bodies 186 .

Specifically, each corner of the first shell body is provided with at least one guide post 196; or each corner of the second shell body is provided with at least one guide post 196; or each corner of the first shell body and the second shell body At least one guide post 196 is provided at each corner of the second shell body. This arrangement can ensure the matching dimensions of the multi-layer shell body 186 .

Further, as shown in FIG. 14 , the partition 188 is provided with a slot 194 , and in any two adjacent shell bodies 186 , the surrounding plate 192 of one shell body 186 is inserted into the slot 194 of the other shell body 186 .

Wherein, by rationally setting the matching structure of the shroud 192 and the partition 188 of any adjacent two-layer shell body 186, in any adjacent two-layer shell body 186, the shroud 192 of one shell body 186 is inserted into the other shell body 186 in slot 194. The slot 194 can wrap the end of the shroud 192 inserted therein, which is beneficial to improve the airtightness of the connection between the shroud 192 and the partition 188 , and provides effective and reliable structural support for defining the flow path of the airflow.

That is, the coaming plate 192 of any adjacent two-layer shell body 186 cooperates with the partition plate 188, while meeting the use requirements of forming a plurality of noise reduction chambers, it reduces the input of materials surrounding the noise reduction chambers, which is beneficial to reduce The production cost of the product. At the same time, while ensuring the volume of multiple noise reduction chambers, this setting is conducive to reducing the overall size of the noise reduction device 170, thereby reducing the occupancy rate of the noise reduction device 170 to the internal space of the cooking machine 100, which is convenient for the cooking machine 100. Reasonable layout of other components of the device.

Further, as shown in Figure 7, Figure 9, Figure 15 and Figure 19, the outer surface of the housing 172 is provided with a water receiving tank 200 and a water leakage hole 202, and the water receiving tank 200 communicates with the water leakage hole 202; wherein, the noise reduction chamber is located One side of the water leakage hole 202.

Wherein, by rationally setting the structure of the housing 172, the outer surface of the housing 172 is provided with a water receiving tank 200 and a water leakage hole 202, and the water receiving tank 200 communicates with the water leakage hole 202, that is, if the condensed water drops on the housing 172 At this time, the condensed water can flow along the water receiving tank 200 to the water leakage hole 202, and then be discharged from the noise reduction device 170, which reduces the probability of condensed water leaking into the noise reduction chamber, and can ensure the noise reduction effect of the noise reduction device 170. This configuration enriches the use functions of the noise reduction device 170 and improves the use performance and market competitiveness of the noise reduction device 170 .

In addition, the noise reduction chamber is located on one side of the water leakage hole 202, and the water flow discharged from the water leakage hole 202 is located on one side of the noise reduction chamber, so that the condensed water can be effectively prevented from flowing into the noise reduction chamber.

In this embodiment, each layer of the shell body 186 is provided with a water leakage hole 202 , and the water leakage holes 202 of any two adjacent layers of the shell body 186 are provided correspondingly.

In some other embodiments, the outer surface of the housing 172 is provided with leaking holes 202 , and among the multi-layer shell bodies 186 , the shell bodies 186 not provided with the leaking holes 202 are located on one side of the leaking holes 202 .

Further, as shown in FIG. 6 , FIG. 17 and FIG. 18 , an air guide groove 204 is provided on the side of the casing 172 away from the water receiving tank 200 .

Wherein, an air guide groove 204 is provided on the side of the housing 172 facing away from the water receiving tank 200 , so that the noise reduction device 170 has the function of guiding the airflow, so as to limit the flow path of the airflow. This configuration enriches the use functions of the noise reduction device 170 and improves the use performance and market competitiveness of the noise reduction device 170 .

Embodiment 6:

As shown in Figure 21, Figure 22, Figure 24, Figure 25, Figure 26 and Figure 28, the embodiment of the second aspect of the present application proposes a base 110 for the cooking machine 100, the base 110 includes: as in the first aspect The noise reducing device 170 of any one of the embodiments.

Since the base 110 provided in the present application includes the noise reduction device 170 of any embodiment in the first aspect, it has all the beneficial effects of the above noise reduction device 170 , and will not describe them here.

Specifically, there is at least one noise reduction device 170 .

Further, as shown in Fig. 21, Fig. 22, Fig. 24 and Fig. 28, the base 110 also includes: a seat body 112, a second air duct is arranged in the seat body 112, and the seat body 112 is also provided with an air inlet 118 and an air outlet The air outlet 119 and the second air passage are connected to the air inlet 118 and the air outlet 119, and the noise reduction device 170 is located in the second air passage.

Wherein, the base 110 also includes: a seat body 112, a second air duct is arranged in the seat body 112, the second air duct communicates with the air inlet 118, and the second air duct communicates with the air outlet 119, that is, the second air duct It communicates with the air inlet 118 and the air outlet 119 . The noise reduction device 170 is located in the second air duct to ensure effective contact between the noise reduction device 170 and the sound wave, and provide effective structural support for the noise reduction process of the noise reduction device 170 .

Further, as shown in FIG. 21 , FIG. 22 , FIG. 24 and FIG. 28 , the base 110 further includes: sound-absorbing cotton 210 located in the second air duct, and the sound-absorbing cotton 210 is located around the noise reduction device 170 .

Wherein, base 110 also includes sound-absorbing cotton 210, and sound-absorbing cotton 210 is located in the second air duct, and sound-absorbing cotton 210 can play the role of noise reduction, that is, sound-absorbing cotton 210 cooperates with noise-reducing device 170 to achieve multiple sound waves. Level noise reduction processing is beneficial to improve the noise reduction effect of the cooking machine 100.

Specifically, the cooking machine 100 includes a cup body assembly 140, and the cup body assembly 140 includes a base body 146, and a motor 148 and a fan blade 152 are arranged in the base body 146, and the motor 148 drives the fan blade 152 to rotate, and the base body 146 and the second air duct connected. When working, the motor 148 drives the fan blade 152 to rotate to inhale air from the air inlet 118 of the base 110. After passing through the sound-absorbing cotton 210, the motor 148 and the fan blade 152, the air flows to the noise reduction device 170, and then is discharged from the cooking machine through the air outlet 119. 100. That is to say, after the air inlet 118 enters the second air duct, it first passes through the sound-absorbing cotton 210 for noise reduction, and then passes through the noise reduction device 170 for noise reduction, realizing multi-stage noise reduction processing. The sound-absorbing cotton 210 is located around the noise reduction device 170, providing effective structural support for multi-stage noise reduction treatment.

Further, as shown in FIG. 28 , the top of the seat body 112 is provided with a first opening 116 , the first opening 116 communicates with the second air duct, and the first opening 116 is used to communicate with the cup assembly 140 of the cooking machine 100 ; The bottom of the seat body 112 is provided with an air inlet 118 and an air outlet 119 , at least a part of the air inlet 118 is arranged corresponding to the sound-absorbing cotton 210 , and at least a part of the air outlet 119 is arranged corresponding to the first air duct 174 .

Wherein, by rationally setting the structure of the seat body 112 , the seat body 112 is provided with a first opening 116 , an air inlet 118 and an air outlet 119 . Specifically, the top of the seat body 112 is provided with a first opening 116 , and the bottom of the seat body 112 is provided with an air inlet 118 and an air outlet 119 .

The cup assembly 140 of the cooking machine 100 is detachably arranged on the top of the base 110, and the first opening 116 is arranged on the top of the seat body 112, which can ensure that the airflow entering the second air duct from the air inlet 118 can flow through the first opening 116. The motor 148 of the cup assembly 140, that is, ensures the smoothness of the air flow path.

In addition, the bottom of the seat body 112 is provided with an air inlet 118 and an air outlet 119, which can hide the air inlet 118 and the air outlet 119 while ensuring the smooth flow of the airflow, so as to prevent the air inlet 118 and the air outlet 119 from being exposed. It is beneficial to improve the aesthetics of the product appearance.

In addition, at least a part of the air inlet 118 is set corresponding to the sound-absorbing cotton 210, so that the airflow entering through the air inlet 118 needs to flow through the sound-absorbing cotton 210 to ensure effective contact between the sound-absorbing cotton 210 and the airflow, thereby ensuring the noise reduction effect of the sound-absorbing cotton 210 .

In addition, at least a part of the air outlet 119 is set corresponding to the first air duct 174 , which can ensure that the airflow flows to the air outlet 119 after the noise reduction treatment by the noise reduction device 170 , so as to ensure the noise reduction effect of the noise reduction device 170 .

Embodiment 7:

As shown in Fig. 21 to Fig. 27, the embodiment of the third aspect of the present application proposes a cooking machine 100, including: the base 110 as the embodiment of the second aspect.

Since the cooking machine 100 provided in the present application includes the base 110 of the second embodiment, it has all the beneficial effects of the above-mentioned base 110 , which will not be stated here.

Further, as shown in FIG. 21 , FIG. 22 and FIG. 24 , the cooking machine 100 further includes: a cup assembly 140 , which is detachably connected to the base 110 .

Wherein, cooking machine 100 also includes cup body assembly 140, and cup body assembly 140 is detachably connected with base 110, and cup body assembly 140 is used for holding food material, and has the function of cooking food material (such as crushing food material, heating food material, etc.) ). The cup assembly 140 is detachably connected to the base 110 , the base 110 supports and fixes the cup assembly 140 , the cup assembly 140 can be assembled with the base 110 , and the cup assembly 140 can also be separated from the base 110 .

Further, as shown in Figure 21, Figure 22 and Figure 24, the cup body assembly 140 includes: a cup body 142; a crushing knife 144, located in the cup body 142; a seat body 146, connected with the cup body 142, and the seat body 146 is set There is a second opening; the motor 148 is located in the seat body 146, the motor 148 includes a drive shaft 150, the first end of the drive shaft 150 extends into the cup body 142 and is connected with the crushing knife 144; the fan blade 152 is located in the seat body 146 , the second end of the drive shaft 150 is connected to the fan blade 152; wherein, the first opening 116 of the base 110 communicates with the second opening.

Wherein, the cup body assembly 140 includes a cup body 142 , a crushing knife 144 , a seat body 146 , a motor 148 and a fan blade 152 . Wherein, the seat body 146 is provided with a second opening, and the second opening communicates with the first opening 116 , that is, the seat body 146 communicates with the second air duct of the base 110 .

Specifically, the cup assembly 140 includes a seat body 146 , and a motor 148 and a fan blade 152 are disposed in the seat body 146 , and the motor 148 drives the pulverizer 144 to rotate and at the same time drives the fan blade 152 to rotate. When working, the motor 148 drives the fan blade 152 to rotate to suck air from the air inlet 118 of the base 110. The air flow passes through the sound-absorbing cotton 210 and flows from the first opening 116 to the second opening. After the air flow passes through the motor 148 and the fan blade 152, it is The second opening flows to the first opening 116 and to the noise reduction device 170 , and then is discharged out of the cooking machine 100 through the air outlet 119 . This setting can ensure the effective contact of the airflow with the motor 148 and the fan blade 152, so as to utilize the external cold air to dissipate heat from the motor 148 and the fan, can ensure the working temperature of the motor 148, and provide structural support for prolonging the service life of the motor 148.

It can be understood that the motor 148 rotates at a high speed to generate rotational power, and the motor 148 generates heat when it works, so that the drive shaft 150 of the motor 148 is connected to the fan blade 152 to dissipate heat from the motor 148 through the fan blade 152 . When the motor 148 works and drives the fan blade 152 to rotate, vibration noise and wind resistance turbulent noise will be generated. That is to say, the main noise source of the cooking machine 100 includes the motor 148 and the fan blade 152 . Therefore, the sound-absorbing cotton 210 and the noise reduction device 170 are used for noise reduction treatment.

Embodiment 8:

As shown in Fig. 21 to Fig. 27, on the basis of embodiment 7, embodiment 8 provides a cooking machine 100, including: the base 110 as in the embodiment of the second aspect.

Further, as shown in FIG. 21 to FIG. 27 , the cooking machine 100 also includes a cover assembly 120, which is detachably connected to the base 110, and a housing cavity 130 is enclosed between the base 110 and the cover assembly 120, and the cup The body assembly 140 is located in the accommodating chamber 130 , and the cup body assembly 140 is detachably connected to the base 110 .

Wherein, the base 110 and the cover assembly 120 enclose the accommodation cavity 130 , the cup assembly 140 is located in the accommodation cavity 130 , and the base 110 and the cover assembly 120 wrap the cup assembly 140 . That is to say, the base 110 cooperates with the cover assembly 120 to isolate the cup assembly 140 from the outside. In this way, the external transmission of noise generated when the cooking machine 100 is in operation can be effectively reduced, which is beneficial to improving the noise reduction effect of the product. In addition, the base 110 and the cover assembly 120 also have the function of keeping the food inside the cup assembly 140 warm and insulated, avoiding scalding the user, and improving the safety and reliability of the product.

Specifically, the base 110 is detachably connected to the cover assembly 120 , and the cup assembly 140 is detachably connected to the base 110 .

When assembling the cooking machine 100 , the cup assembly 140 is placed on the base 110 first, and then the cover assembly 120 is covered outside the cup assembly 140 and assembled with the base 110 .

When disassembling the cooking machine 100 , the cover assembly 120 is removed from the base 110 first, and then the cup assembly 140 can be separated from the base 110 .

Further, there is a gap between the cup assembly 140 and the cavity wall of the accommodating cavity 130 .

There is a gap between the cup assembly 140 and the cavity wall of the accommodating cavity 130 by reasonably setting the matching structure between the cup assembly 140 and the accommodating cavity 130 , that is, the cup assembly 140 is separated from the cavity wall of the accommodating cavity 130 . This setting can reduce the external transmission of the noise generated by the cup body assembly 140 when the cooking machine 100 is working, which is beneficial to improve the noise reduction effect of the product. In addition, the gap between the cup assembly 140 and the cavity wall of the accommodating cavity 130 also has the function of keeping and insulating the ingredients in the cup assembly 140, avoiding scalding the user, and improving the safety of the product. and reliability.

Further, as shown in FIG. 21 , FIG. 22 and FIG. 24 , the cover assembly 120 includes: an outer cover 122 that is detachably connected to the base 110 , and the outer cover 122 is provided with an opening; a first sub-cover 220 that is detachable from the outer cover 122 The first sub-cover 220 is used to open or close the opening.

Further, as shown in FIG. 27 , FIG. 29 and FIG. 30 , the first sub-cover 220 is provided with a channel 222 and a first chamber 224 , and the first sub-cover 220 is also provided with a first air inlet 226 and an air outlet 228 , The channel 222 communicates with the first air inlet 226 and the air outlet 228; the wall surface of the channel 222 is provided with a communication structure 230, and the first chamber 224 communicates with the communication structure 230; wherein, the cross-sectional area of the channel 222 is smaller than that of the first chamber 224 cross-sectional area.

Wherein, the first sub-cover 220 is provided with a channel 222 and a first chamber 224, the first sub-cover 220 is also provided with a first air inlet 226 and an air outlet 228, the channel 222 communicates with the first air inlet 226, and the channel 222 communicates with the air outlet 228 , that is, the channel 222 communicates with the first air inlet 226 and the air outlet 228 . The heat generated by the cup assembly 140 can be discharged from the first sub-cover 220 through the channel 222 , which provides structural support for the safety and reliability of the cooking machine 100 .

In addition, a communication structure 230 is disposed on the wall surface of the channel 222 , and the first chamber 224 communicates with the communication structure 230 . By rationally setting the matching structure of the passage 222 and the first chamber 224, the flow cross-sectional area of the passage 222 is smaller than the flow cross-sectional area of the first chamber 224, that is, the passage 222 and the first chamber 224 are jointly configured to resonate Cavity structure, when the sound wave reaches the resonant chamber 182, the part of the sound wave that is close to the natural frequency of the resonant cavity structure causes the resonance of the resonant cavity structure. The friction of the inner wall of the chamber 224 converts mechanical energy into heat energy, thereby consuming sound energy, which can effectively achieve the effect of sound absorption and noise reduction.

In addition, the flow cross-sectional area of the passage 222 is smaller than the flow cross-sectional area of the first chamber 224, that is, the matching structure of the passage 222 and the first chamber 224 is reasonably arranged, which is beneficial to the sound wave and the passage 222 and the first chamber 224. Coupling is performed to ensure the noise reduction effect of the cover.

It can be understood that the sound wave generated by the cooking machine 100 is transmitted to the communication structure 230 through the channel 222 , and then propagates to the first chamber 224 through the communication structure 230 , enters the first chamber 224 , and then passes through the communication structure 230 Pass to channel 222. That is to say, for the first chamber 224, the inlet and outlet of the first chamber 224 are the same structure (that is, the communication structure 230), and the sound wave is transmitted into the first chamber 224 by the communication structure 230, and then the sound wave is transmitted by the communication structure 230. Structure 230 is outgoing.

This setting makes the cover neither block the discharge of hot air, but also reduce the external transmission of noise generated when the cooking machine 100 is working, which is conducive to improving the noise reduction effect of the cooking machine 100 and enriching the use function of the cover. Improve product performance and market competitiveness.

Further, the flow cross-sectional area S3 of the communication structure 230, the volume V3 of the first chamber 224, the length L3 of the channel 222, the sound velocity c3 and the target noise reduction frequency f3 of the cooking machine 100 satisfy:

When the cooking machine 100 is working, the target noise reduction frequency characteristic remains unchanged, and the flow cross-sectional area S3 of the connecting structure 230, the volume V3 of the first chamber 224, the length L3 of the channel 222, and the sound velocity c3 are all consistent with those of the cooking machine 100. The target noise reduction frequency f3 is relevant. That is to say, while ensuring the noise reduction effect of the first sub-cover 220 , the size of the first sub-cover 220 is adapted to the size of the outer cover 122 and the cup assembly 140 .

Further, there are multiple first chambers 224 , and the multiple first chambers 224 are arranged at intervals along the circumference of the channel 222 .

Wherein, there are multiple first chambers 224, so the structure of multiple first chambers 224 can be set according to the target noise reduction frequency. Chamber 224. For another example, multiple first chambers 224 of the same specification are set up for the same frequency, which is conducive to realizing broadband sound absorption and noise reduction, can meet the diverse needs of users, and is conducive to improving product performance and market competitiveness. .

In addition, a plurality of first chambers 224 are arranged at intervals along the circumference of the channel 222 . In this way, the structure of the channel 222 can be rationally utilized to provide effective and reliable structural support for matching dimensions of the communication structure 230 and the plurality of first chambers 224 .

Specifically, any two first chambers 224 in the plurality of first chambers 224 have different specifications.

Specifically, there are multiple communication structures 230 , and each first chamber 224 communicates with at least one communication structure 230 .

Specifically, there are multiple channels 222 , and each first chamber 224 communicates with the communication structure 230 of at least one channel 222 .

Further, as shown in FIG. 21 , FIG. 22 , FIG. 24 and FIG. 31 , the cooking machine 100 further includes: a second sub-cover 240 detachably connected with the first sub-cover 220 , the second sub-cover 240 is used to open or Close the open end of the cup assembly 140; the second sub-cover 240 is provided with a second air inlet 242, and a second chamber 244 is enclosed between the first sub-cover 220 and the second sub-cover 240; wherein, the first air inlet Both the flow cross-sectional area of the port 226 and the flow cross-sectional area of the second air inlet 242 are smaller than the flow cross-sectional area of the second chamber 244 .

Wherein, the cooking machine 100 also includes: a second sub-cover 240, the second sub-cover 240 is detachably connected with the first sub-cover 220, and a second chamber is enclosed between the first sub-cover 220 and the second sub-cover 240 244 , the second chamber 244 communicates with the first air inlet 226 and the second air inlet 242 . The hot air generated when the cooking machine 100 is in operation enters into the second chamber 244 through the second air inlet 242 , flows through the first air inlet 226 to the channel 222 , and then is discharged from the channel 222 . That is to say, the hot air first passes through the second chamber 244 and then flows to the channel 222 , which provides structural support for the safety and reliability of the cooking machine 100 .

In addition, by rationally setting the matching structure of the first air inlet 226 , the second air inlet 242 and the second chamber 244 , the flow cross-sectional area of the first air inlet 226 and the flow flow of the second air inlet 242 The cross-sectional areas are all smaller than the flow cross-sectional area of the second chamber 244, which is equivalent to the sound wave entering a second chamber with a larger volume from a region with a smaller volume (such as the area surrounded by the wall of the second air inlet 242). chamber 244, and then discharged by a smaller volume area (such as, the area surrounded by the wall of the first air inlet 226), in order to realize the adaptation of acoustic impedance, the sound wave in the mouth of the first air inlet 226 The wall of the second chamber 244 and the wall of the second air inlet 242 reflect and interfere, so that the sound energy can be consumed, and the effect of sound absorption and noise reduction can be effectively achieved.

The second air inlet 242, the second chamber 244 and the first air inlet 226 cooperate to realize the first noise reduction treatment of the sound wave, and the channel 222, the communication structure 230 and the first chamber 224 cooperate to realize the noise reduction of the sound wave. The second noise reduction processing of the sound wave. That is to say, the sound waves flow through the second sub-cover 240 and the first sub-cover 220, and the second sub-cover 240 and the first sub-cover 220 can perform multi-stage noise reduction processing on the sound waves, which is beneficial to improve the noise reduction effect of the cooking machine 100 .

Specifically, the distance L4 between the first sub-cover 220 and the second sub-cover 240, the sound velocity c4 and the target noise reduction frequency f4 of the cooking machine 100 satisfy:

n is a natural number.

When the cooking machine 100 is working, the target noise reduction frequency characteristic remains unchanged. The distance L4 between the first sub-cover 220 and the second sub-cover 240 and the sound velocity c4 are both related to the target noise reduction frequency f4 of the cooking machine 100 . That is to say, while ensuring the noise reduction effect of the first sub-cover 220 and the second sub-cover 240, the size of the first sub-cover 220 and the second sub-cover 240 is the same as that of the outer cover 122 and the cup assembly 140 of the cooking machine 100. The size matches.

Specifically, n includes 0, 1, 2, 3, 4, 5, etc., which are not listed here.

Further, as shown in FIG. 29, the first sub-cover 220 includes: a first sub-case 232, the first sub-case 232 is provided with a first air inlet 226; a second sub-case 234, detachable from the first sub-case 232 The second sub-shell 234 is provided with an air outlet 228, and the first sub-shell 232 and the second sub-shell 234 enclose the first chamber 224; wherein, one of the first sub-shell 232 and the second sub-shell 234 is set There is channel 222. That is to say, the first sub-shell 232 and the second sub-shell 234 cooperate to meet the use requirements of forming the first chamber 224 while reducing the input of materials surrounding the first chamber 224, which is conducive to reducing the production cost of the product. . Since the first sub-shell 232 and the second sub-shell 234 are detachably connected, it is convenient to clean the inside of the first sub-cover 220, which can ensure the sanitation and safety of the cover.

Wherein, one of the first sub-shell 232 and the second sub-shell 234 is provided with the channel 222, that is, one of the first sub-shell 232 and the second sub-shell 234 is used to support and fix the channel 222, so as to ensure that the channel 222 The matching structure with the first chamber 224 further ensures the effectiveness and feasibility of communication between the communication structure 230 and the first chamber 224 .

Specifically, the communication structure 230 includes at least one of a communication hole and a communication groove.

Specifically, at least a part of the first air inlet 226 is disposed corresponding to the air outlet 228 .

Further, as shown in FIG. 30 , the first sub-cover 220 also includes a cover plate 236 , the cover plate 236 is located on the side of the first sub-shell 232 away from the second sub-shell 234 , the cover plate 236 is provided with an escape space, and the air outlet 228 Corresponding setting with the avoidance space. The cover plate 236 has a decorative function to ensure the aesthetic appearance and fluency of the cover body.

In addition, the cover plate 236 is provided with an escape vacancy, and the air outlet 228 is arranged corresponding to the escape vacancy, and the avoidance vacancy plays the role of avoiding the air outlet 228, so that the hot air in the air outlet 228 can be smoothly discharged from the cover through the avoidance vacancy.

Further, as shown in FIG. 29 , the other of the first sub-shell 232 and the second sub-shell 234 is provided with a first surrounding edge 238 , and the end of the channel 222 protrudes into the first surrounding edge 238 . When the first sub-shell 232 and the second sub-shell 234 are mated, the end of the channel 222 extends into the first surrounding edge 238, and the first surrounding edge 238 can limit the movement of the channel 222 to ensure that the first sub-shell 232, the second The matching structure of the sub-shell 234 and the passage 222 can further ensure the effective cooperation between the passage 222 and the first chamber 224 . In addition, since the end of the channel 222 protrudes into the first surrounding edge 238, the sealing of the joint between the channel 222 and the surrounding plate 192 can be ensured, so as to limit the flow path of the airflow and provide an effective noise reduction function for the cover. And reliable structural support.

Specifically, the first sub-shell 232 is provided with a first surrounding edge 238, the first surrounding edge 238 is located on the peripheral side of the first air inlet 226, the second sub-shell 234 is provided with a channel 222, and the free end of the channel 222 can extend Into the first perimeter 238.

Specifically, the second sub-shell 234 is provided with a first surrounding edge 238, the first surrounding edge 238 is located on the side of the air outlet 228, the first sub-shell 232 is provided with a channel 222, and the free end of the channel 222 can extend into the first Inside the perimeter 238.

Further, as shown in FIG. 29 , the cooking machine 100 further includes a fifth sealing portion 270 for sealing the joint between the first sub-shell 232 and the second sub-shell 234 .

Further, as shown in FIG. 31 , the outer surface of the second sub-cover 240 is provided with a second surrounding edge 246, and the second surrounding edge 246 is located on the peripheral side of the second air inlet 242, and a part of the first sub-cover 220 protrudes into Inside the second surrounding edge 246 , a portion of the first sub-cover 220 located inside the second surrounding edge 246 is provided with a first air inlet 226 . This setting increases the mating area and mating angle of the joint between the first sub-cover 220 and the second sub-cover 240, which is beneficial to ensure the sealing of the joint between the first sub-cover 220 and the second sub-cover 240, so as to limit the air flow flow path.

In addition, the part of the first sub-cover 220 located in the second surrounding edge 246 is provided with a first air inlet 226, while ensuring the tightness of the connection between the first sub-cover 220 and the second sub-cover 240, it provides air intake for the first inlet. The air port 226 communicates with the second air inlet 242 to provide effective structural support.

Further, as shown in FIG. 22 and FIG. 23 , the cooking machine 100 further includes a second sealing portion 250 for sealing the joint between the first sub-cover 220 and the second surrounding edge 246 . This setting can prevent the airflow from leaking from the connection between the first sub-cover 220 and the second surrounding edge 246, and ensure the good sealing of the connection between the first sub-cover 220 and the second surrounding edge 246, so as to define The flow path of the airflow can ensure the effective contact between the second chamber 244 and the first chamber 224 with the sound wave, which is beneficial to improve the noise reduction effect. In addition, the second sealing portion 250 can also avoid hard contact between the first sub-cover 220 and the second surrounding edge 246 , which is beneficial to reduce and further enhance the noise reduction effect of the casing 172 .

Wherein, the second sealing portion 250 includes a sealing ring. A sealing ring is provided at the joint between the first sub-cover 220 and the second surrounding edge 246 . Furthermore, the sealing ring is a rubber part.

Further, as shown in FIG. 22 and FIG. 23 , the cooking machine 100 further includes: a third sealing portion 260 , and the third sealing portion 260 is used to seal the connection between the outer cover 122 and the first sub-cover 220 and the second sub-cover 240 .

Wherein, the cooking machine 100 also includes a third sealing part 260, by setting the third sealing part 260 to be located at the connection between the outer cover 122 and the first sub-cover 220 and the second sub-cover 240, so as to use the third sealing part 260 to seal the outer cover 122 The connection with the first sub-cover 220 and the second sub-cover 240 .

This arrangement can prevent the airflow from leaking from the connection between the outer cover 122 and the first sub-cover 220 and the second sub-cover 240, and ensure a good seal at the connection between the outer cover 122 and the first sub-cover 220 and the second sub-cover 240 In order to limit the flow path of the airflow, it is beneficial to improve the noise reduction effect of the cooking machine 100 .

In addition, the third sealing part 260 is located at the connection between the outer cover 122 and the first sub-cover 220 and the second sub-cover 240, which can play a role of vibration reduction, so that the outer cover 122 can avoid contact with the first sub-cover when the cooking machine 100 is working. The hard contact between the 220 and the second sub-cover 240 is conducive to further improving the noise reduction effect of the cooking machine 100 .

Specifically, the third sealing portion 260 is a sealing ring. Sealing rings are provided at the connections between the outer cover 122 and the first sub-cover 220 and the second sub-cover 240 . Furthermore, the sealing ring is a rubber part.

Specifically, the cooking machine 100 includes a wall breaker, a soybean milk machine, a juice extractor, a juicer, etc., which are not listed here.

Embodiment 9:

As shown in FIG. 21 , FIG. 22 and FIG. 24 , the cooking machine 100 includes a first sub-cover 220 , a second sub-cover 240 , an outer cover 122 , a cup assembly 140 and a base 110 . Wherein, the cup assembly 140 is located inside the outer cover 122 . Wherein, the first sub-cover 220 , the outer cover 122 and the base 110 are integrated to wrap the cup assembly 140 that generates the sound source.

The outer cover 122 is used to isolate the internal sound source from direct radiation to the outside, and cannot be sealed due to the need for exhaust, and the first sub-cover 220 is added for exhaust, while reducing whipping noise and noise inside the cup body 142 .

As shown in FIG. 21 , FIG. 22 and FIG. 24 , a noise reduction device 170 is disposed in the base 110 . The upper part of the noise reduction device 170 communicates with the second opening of the seat 146 of the cup assembly 140 . The noise reduction device 170 is provided with a first air duct 174 , so that the sound waves inside the motor 148 , the fan blade 152 and the housing 122 enter the interior of the noise reduction device 170 through the first air duct 174 as much as possible to realize noise reduction.

As shown in FIGS. 1 to 19 , the noise reduction device 170 includes a first air duct 174 and multiple noise reduction cavities of different sizes.

The plurality of noise reduction chambers includes at least one first noise reduction chamber 178 , the first noise reduction chamber 178 includes a resonant pipe 180 and a resonant chamber 182 , and the resonant pipe 180 and the resonant chamber 182 are used to eliminate noise of a specific frequency.

As shown in Figure 11, it is a schematic cross-sectional view of the upper layer of the noise reduction device 170; as shown in Figure 12, it is a schematic cross-sectional view of the middle layer of the noise reduction device 170; as shown in Figure 13, a schematic cross-sectional view of the bottom layer of the noise reduction device 170 . The cross-sectional view of the middle layer, similar to the upper and lower layers, includes a first noise reduction cavity 178 .

In addition, the middle layer and the bottom layer also include a second noise reduction cavity 184, that is, a wavelength tube. Wavelength tubes of different lengths eliminate noises of different frequencies. Larger, the greater the noise reduction.

The structure is designed and matched using the principle that one wavelength tube eliminates noise in one frequency band and one resonant cavity eliminates noise in one frequency band.

Specifically, the noise reduction device 170 and the sound-absorbing cotton 210 are arranged in the base 110 . Wherein, the thickness of the sound-absorbing cotton 210 is greater than 10mm.

Specifically, the distance between the first shell 172 and the second shell 172 of the first sub-cover 220 is greater than or equal to 8 mm, such as 9 mm, 10 mm, 11 mm, 12 mm, etc., which are not listed here.

Specifically, along the direction from the first air inlet 226 to the air outlet 228 , the flow cross-sectional area of the channel 222 changes gradually or abruptly.

Specifically, the cross-sectional shape of the communication structure 230 includes any one of the following or a combination thereof: ellipse, polygon and special shape. Among them, abnormity refers to irregular shapes.

Specifically, the maximum value of the line connecting any two points on the wall of the air outlet 228 is less than or equal to 20mm, such as 18mm, 16mm, 15mm, 14mm, 13mm, etc., which are not listed here.

Specifically, the bulk density of the outer cover 122 is greater than 1000 kilograms per cubic meter, and the thickness of the outer cover 122 is greater than 3 mm. That is to say, the surface density of the outer cover 122 is required to be greater than 3 kilograms per square meter.

The cup body 142 and the parts in contact with each other are installed for vibration reduction, and the outer cover 122 and the parts in contact with each other are also installed for vibration reduction.

A ring-shaped damping soft rubber (referred to as the first sealing member) is disposed between the outer cover 122 and the base 110 , and the cutting surface is L-shaped, which can realize sealing and damping at the same time.

The bottom of the cup assembly 140 is provided with a shock absorber, and/or a large shock absorber is designed on the base 110 to achieve a vibration-damping fit between the cup 142 and the base 110 .

The bottom of the base 110 is provided with an air inlet 118, and the air inlet 118 ensures the entry of external cold air to achieve good heat dissipation. At the same time, the air inlet 118 is more conducive to sound waves entering the sound-absorbing cotton 210 and the noise reduction device 170 at the bottom through the base 110, thereby achieving more effective noise reduction.

Specifically, as shown in FIG. 32 , the cooking machine in the related art (the base of the cooking machine is not provided with a noise reduction structure) and the cooking machine 100 of the present application (the base 110 of the cooking machine 100 is provided with a noise reduction device 170) It can be seen from the data graph of the amount of noise reduction that the noise reduction device 170 of the present application has a good noise reduction effect in a wide frequency range, improves the noise reduction effect of the whole machine, and realizes broadband sound absorption and noise reduction.

Specifically, along the height direction of the cooking machine 100, the height of the wavelength tube is greater than or equal to 3mm, such as 4mm, 5mm, 6mm, 8mm, etc., which are not listed here.

Specifically, along the height direction of the noise reduction device 170 , the height of the wavelength tube is greater than or equal to 3 mm, for example, 4 mm, 5 mm, 6 mm, 8 mm, etc. are not listed here.

Specifically, along the height direction of the noise reduction device 170 , the height of the resonance chamber 182 is greater than or equal to 3 mm, such as 4 mm, 5 mm, 6 mm, 8 mm, etc., which are not listed here.

Specifically, the length of the resonance pipe 180 is greater than or equal to 2mm, such as 3mm, 4mm, 5mm, 6mm, 8mm, etc., which are not listed here.

Specifically, the number of shell bodies 186 is M, and the noise reduction device 170 has N layers of spaces inside, and each layer of spaces includes multiple noise reduction cavities, where N=M-1.

Example 10:

As shown in Fig. 33 to Fig. 40, the embodiment of the third aspect of the present application proposes a cover body 290 for the cooking machine 100, the cover body 290 includes: a cover body, the cover body is provided with a channel 222 and a first chamber 224, the cover body is also provided with a first air inlet 226 and an air outlet 228, and the passage 222 communicates with the first air inlet 226 and the air outlet 228, and a communication structure 230 is provided on the pipe wall of the passage 222, and the first chamber 224 is connected to the first chamber 224. The communication structure 230 is in communication; wherein, the flow cross-sectional area of the channel 222 is smaller than the flow cross-sectional area of the first chamber 224 .

In detail, the cover body 290 includes a cover body, the cover body is provided with a channel 222, the cover body is also provided with a first air inlet 226 and an air outlet 228, the channel 222 communicates with the first air inlet 226, and the channel 222 communicates with the air outlet 228 communicates, that is, the channel 222 communicates with the first air inlet 226 and the air outlet 228 . The heat generated by the cooking machine 100 can be discharged from the cover 290 through the channel 222 , which provides structural support for the safety and reliability of the cooking machine 100 .

Further, a communication structure 230 is provided on the pipe wall of the channel 222 , and the first chamber 224 communicates with the communication structure 230 . By rationally setting the matching structure of the passage 222 and the first chamber 224, the flow cross-sectional area of the passage 222 is smaller than the flow cross-sectional area of the first chamber 224, that is, the passage 222 and the first chamber 224 are jointly configured to resonate Cavity structure, when the sound wave reaches the first chamber 224, the part of the sound wave that is close to the natural frequency of the resonant cavity structure causes the resonance of the resonant cavity structure. The friction of the inner wall of the chamber 224 converts mechanical energy into heat energy, thereby consuming sound energy, which can effectively achieve the effect of sound absorption and noise reduction.

Further, the flow cross-sectional area of the passage 222 is smaller than the flow cross-sectional area of the first chamber 224, that is, the matching structure of the passage 222 and the first chamber 224 is reasonably arranged, which is beneficial to the sound wave and the passage 222 and the first chamber. 224 to ensure the noise reduction effect of the cover 290 .

This setting makes the cover 290 neither block the discharge of hot air, but also reduce the amount of noise generated when the cooking machine 100 is working, which is conducive to improving the noise reduction effect of the cooking machine 100 and enriching the use of the cover 290. Function, improve product performance and market competitiveness.

Further, the flow cross-sectional area S1 of the communication structure 230, the volume V1 of the first chamber 224, the length L1 of the channel 222, the sound velocity c1 and the target noise reduction frequency f1 of the cooking machine 100 satisfy:

Wherein, when the cooking machine 100 is working, the target noise reduction frequency characteristic remains unchanged, and the flow cross-sectional area S1 of the connecting structure 230, the volume V1 of the first chamber 224, the length L1 of the channel 222, and the sound velocity c1 are all related to the cooking machine. The target noise reduction frequency f1 of 100 is relevant. That is to say, while ensuring the noise reduction effect of the cover body 290 , the size of the cover body 290 is adapted to the size of other components of the cooking machine 100 .

Specifically, the channel 222 communicates with the first air inlet 226 and the air outlet 228 . A first end of the passage 222 may be connected to a first air inlet 226 , and a second end of the passage 222 may be connected to an air outlet 228 . It can also be that the first end of the channel 222 is connected to the first air inlet 226, there is a gap between the second end of the channel 222 and the air outlet 228, the second end of the channel 222 can be set corresponding to the air outlet 228, and the channel 222 The second end can also be staggered from the air outlet 228 . It can also be that there is a gap between the first end of the channel 222 and the first air inlet 226, the second end of the channel 222 is connected to the air outlet 228, and the first end of the channel 222 can be set corresponding to the first air inlet 226, The first end of the channel 222 can also be set staggered with the first air inlet 226 .

Example 11:

As shown in Figures 33 to 40, on the basis of Embodiment 10, Embodiment 11 provides a cover body 290 for the cooking machine 100. The cover body 290 includes: a cover body, the cover body is provided with a channel 222 and a second A chamber 224, the cover body is also provided with a first air inlet 226 and an air outlet 228, the passage 222 communicates with the first air inlet 226 and the air outlet 228, and the pipe wall of the passage 222 is provided with a communication structure 230, the first chamber The chamber 224 communicates with the communication structure 230 ; wherein, the flow cross-sectional area of the channel 222 is smaller than the flow cross-sectional area of the first chamber 224 .

There are multiple first chambers 224, so the structure of multiple first chambers 224 can be set according to the target noise reduction frequency, for example, multiple specifications of the first chamber 224 can be set for multiple different frequencies For another example, a plurality of first chambers 224 of the same specification are set for the same frequency. This setting is conducive to the realization of broadband sound absorption and noise reduction, which can meet the diverse needs of users, and is conducive to improving the performance and market competitiveness of the product.

Of course, it is also possible to have one first chamber 224 and one channel 222 .

Further, a plurality of first chambers 224 are arranged at intervals along the circumference of the channel 222 . In this way, the structure of the channel 222 can be reasonably utilized, providing effective and reliable structural support for the matching dimensions of the communication structure 230 and the plurality of first chambers 224.

In particular, any one of the plurality of first chambers 224 differs in size.

Further, there are multiple communication structures 230 , and each first chamber 224 communicates with at least one communication structure 230 .

Wherein, the number of communication structures 230 is multiple, and each first chamber 224 is communicated with at least one communication structure 230, to ensure the validity and feasibility of communication between each first chamber 224 and passage 222, so that the first A channel 222 cooperates with multiple first cavities 224 to form multiple resonant cavity structures, so that multiple specifications of resonant cavity structures can be set for multiple different frequencies, which is beneficial to realize broadband sound absorption and noise reduction.

Specifically, the plurality of communication structures 230 are arranged along the circumference of the channel 222 to cooperate with the plurality of first chambers 224 arranged along the circumference of the channel 222 , making full use of the inner space of the cover 290 .

Alternatively, there are multiple channels 222 , and each first chamber 224 communicates with the communication structure 230 of at least one channel 222 . There are multiple channels 222 , and each channel 222 communicates with the first air inlet 226 and the air outlet 228 . In addition, each first chamber 224 communicates with the communication structure 230 of at least one channel 222 to ensure the effectiveness and feasibility of communicating each first chamber 224 with the channel 222, so that multiple channels 222 communicate with multiple first The chambers 224 cooperate to form multiple resonant cavity structures, so that multiple specifications of resonant cavity structures can be set for multiple different frequencies, which is beneficial to realize broadband sound absorption and noise reduction.

Example 12:

As shown in Figures 33 to 40, on the basis of Embodiment 10 or Embodiment 11, Embodiment 12 provides a cover body 290 for the cooking machine 100, the cover body 290 includes: a cover body, the cover body is provided with The passage 222 and the first chamber 224, the cover body is also provided with a first air inlet 226 and an air outlet 228, the passage 222 communicates with the first air inlet 226 and the air outlet 228, and the pipe wall of the passage 222 is provided with a communication structure 230 , the first chamber 224 communicates with the communication structure 230 ; wherein, the flow cross-sectional area of the channel 222 is smaller than the flow cross-sectional area of the first chamber 224 .

Further, as shown in FIG. 38 and FIG. 40 , a second chamber 244 is also provided in the cover body, and a second air inlet 242 is also provided in the cover body, and the first air inlet 226 is located between the second air inlet 242 and the second air inlet 242 . between the air outlets 228, and the second chamber 244 communicates with the first air inlet 226 and the second air inlet 242; The cross-sectional areas are smaller than the flow cross-sectional area of the second chamber 244 .

In detail, by rationally setting the structure of the cover body, a second chamber 244 is provided in the cover body, and the second chamber 244 communicates with the first air inlet 226 and the second air inlet 242 . The hot air generated when the cooking machine 100 is in operation enters into the second chamber 244 through the second air inlet 242 , then flows through the first air inlet 226 to the channel 222 , and then exits the cover 290 through the channel 222 . That is to say, the hot air first passes through the second chamber 244 and then flows to the channel 222 , which provides structural support for the safety and reliability of the cooking machine 100 .

In addition, by rationally setting the matching structure of the first air inlet 226 , the second air inlet 242 and the second chamber 244 , the flow cross-sectional area of the first air inlet 226 and the flow flow of the second air inlet 242 The cross-sectional areas are all smaller than the flow-through cross-sectional area of the second chamber 244, which is equivalent to the fact that the sound wave enters a larger volume of the first chamber from a region with a smaller volume (such as the passage 222 surrounded by the wall of the second air inlet 242). The second chamber 244 is then discharged by a smaller area (such as the passage 222 surrounded by the wall of the first air inlet 226), so as to realize the adaptation of the acoustic impedance, and the sound wave is discharged at the first air inlet 226. The reflection and interference at the mouth wall of the second chamber 244 and the second air inlet 242 can consume sound energy and effectively achieve the effect of sound absorption and noise reduction.

Simultaneously, the second air inlet 242, the second chamber 244 and the first air inlet 226 cooperate to realize the noise reduction treatment for the first time of the sound wave, and the channel 222, the communication structure 230 and the first chamber 224 cooperate to realize Realize the second noise reduction processing of sound waves. That is to say, the sound wave flows through the cover body 290 , and the cover body 290 can perform multi-stage noise reduction processing on the sound wave, which is beneficial to improve the noise reduction effect of the cooking machine 100 .

Further, the size L2 of the second chamber 244 in the thickness direction of the cover 290, the sound velocity c2 and the target noise reduction frequency f2 of the cooking machine 100 satisfy:

n is a natural number.

Wherein, when the cooking machine 100 is working, the target noise reduction frequency characteristic remains unchanged, and the size L2 and the sound velocity c2 of the second chamber 244 in the thickness direction of the cover 290 are related to the target noise reduction frequency f2 of the cooking machine 100 sex. That is to say, while ensuring the noise reduction effect of the cover 290 , the size of the cover 290 is adapted to other components of the cooking machine 100 .

Specifically, n includes 0, 1, 2, 3, 4, 5, etc., which are not listed here.

Example 13:

As shown in Figures 33 to 40, on the basis of Embodiment 12, Embodiment 13 provides a cover body 290 for the cooking machine 100. The cover body 290 includes: a cover body, the cover body is provided with a channel 222 and a second A chamber 224, the cover body is also provided with a first air inlet 226 and an air outlet 228, the passage 222 communicates with the first air inlet 226 and the air outlet 228, and the pipe wall of the passage 222 is provided with a communication structure 230, the first chamber The chamber 224 communicates with the communication structure 230 ; wherein, the flow cross-sectional area of the channel 222 is smaller than the flow cross-sectional area of the first chamber 224 .

The cover body is also provided with a second chamber 244, the cover body is also provided with a second air inlet 242, the first air inlet 226 is located between the second air inlet 242 and the air outlet 228, and the second chamber 244 The first air inlet 226 and the second air inlet 242 are connected; wherein, the flow cross-sectional area of the first air inlet 226 and the flow cross-sectional area of the second air inlet 242 are smaller than the flow flow of the second chamber 244 Sectional area.

Further, as shown in Figure 38, Figure 40, Figure 41 and Figure 42, the cover body includes: a first sub-cover 220, the first sub-cover 220 is provided with a channel 222, a first chamber 224, a first air inlet 226 And the air outlet 228; the second sub-cover 240 is detachably connected with the first sub-cover 220, the second sub-cover 240 is provided with a second air inlet 242, and the first sub-cover 220 and the second sub-cover 240 are enclosed Out of the second chamber 244.

In detail, the cover body includes a first sub-cover 220 and a second sub-cover 240, the first sub-cover 220 and the second sub-cover 240 are detachably connected, the second sub-cover 240 is provided with a second air inlet 242, the first A second chamber 244 is enclosed between the sub-cover 220 and the second sub-cover 240 , and the second chamber 244 communicates with the first air inlet 226 and the second air inlet 242 of the first sub-cover 220 . The hot air generated when the cooking machine 100 is in operation enters the second chamber 244 through the second air inlet 242 of the second sub-cover 240, and then flows from the first air inlet 226 of the first sub-cover 220 to the channel 222, and then is Channel 222 exits cover 290 . That is to say, the hot air first passes through the second chamber 244 and then flows to the channel 222 , which provides structural support for the safety and reliability of the cooking machine 100 . The second air inlet 242 , the second chamber 244 and the first air inlet 226 cooperate to realize the first noise reduction treatment of the sound wave. This setting reasonably sets the matching structure of the first sub-cover 220 and the second sub-cover 240, so that the second chamber 244 is enclosed between the first sub-cover 220 and the second sub-cover 240, while ensuring the noise reduction effect, The input of materials is reduced, which is beneficial to reduce the production cost of products.

At the same time, the channel 222 of the first sub-cover 220, the communication structure 230 and the first chamber 224 cooperate to realize the second noise reduction treatment of the sound wave. That is to say, the sound wave flows through the second sub-cover 240 first, and then through the first sub-cover 220. The first sub-cover 220 and the second sub-cover 240 can perform multi-stage noise reduction processing on the sound waves, which is beneficial to improve the cooking machine 100. noise reduction effect.

Further, as shown in FIG. 34 to FIG. 37 , the first sub-cover 220 includes: a first housing 232, the first housing 232 is provided with a first air inlet 226; a second housing 234, and the first housing 232 is detachably connected, the second housing 234 is provided with an air outlet 228, and the first housing 232 and the second housing 234 enclose the first chamber 224; wherein, the first housing 232 and the second housing 234 One of the sets has channel 222.

Wherein, the first sub-cover 220 includes a first housing 232 and a second housing 234 , the first housing 232 is provided with a first air inlet 226 , and the second housing 234 is provided with an air outlet 228 . Specifically, the first housing 232 and the second housing 234 are detachably connected, and the first housing 232 and the second housing 234 enclose the first chamber 224, that is, the first housing 232 and the second housing The body 234 cooperates to meet the use requirements for forming the first chamber 224, and at the same time reduces the input of materials surrounding the first chamber 224, which is beneficial to reduce the production cost of the product. Since the first shell 232 and the second shell 234 are detachably connected, it is convenient to clean the inside of the first sub-cover 220 and can ensure the sanitation and safety of the use of the cover 290 .

In addition, one of the first housing 232 and the second housing 234 is provided with the channel 222, that is, one of the first housing 232 and the second housing 234 is used to support and fix the channel 222, so as to ensure that the channel 222 The matching structure with the first chamber 224 further ensures the effectiveness and feasibility of communication between the communication structure 230 and the first chamber 224 .

Further, at least a part of the first air inlet 226 is set corresponding to the air outlet 228 . By rationally setting the matching structure of the first air inlet 226 and the air outlet 228 , at least a part of the first air inlet 226 is arranged correspondingly to the air outlet 228 . That is, a part of the first air inlet 226 is arranged corresponding to the air outlet 228; or the first air inlet 226 is arranged corresponding to the air outlet 228, for example, the channel 222 is a cylinder. This setting reduces the turning of the airflow and ensures the exhaust efficiency.

Specifically, the communication structure 230 includes at least one of a communication hole and a communication groove. That is, the communication structure 230 includes a communication hole, or the communication structure 230 includes a communication groove, or the communication structure 230 includes a communication hole and a communication groove. The structure of the communication structure 230 can be set in a targeted manner according to specific actual usage requirements, so as to meet diverse usage requirements.

Further, as shown in FIG. 36 , the first sub-cover 220 also includes a cover plate 236, which is located on the side of the first housing 232 facing away from the second housing 234, and the cover plate 236 is provided with an avoidance space 237, and the air outlet 228 is correspondingly set with avoidance vacancy 237.

Wherein, the first sub-cover 220 further includes a cover plate 236, the cover plate 236 is detachably connected with the first housing 232, the cover plate 236 is located on the side of the first housing 232 away from the second housing 234, the cover plate 236 has The function of decoration is to ensure the aesthetics and fluency of the appearance of the cover body 290 .

In addition, the cover plate 236 is provided with an escape vacancy 237, and the air outlet 228 is set corresponding to the avoidance vacancy 237. The avoidance vacancy 237 plays the role of avoiding the air outlet 228, so that the hot air of the air outlet 228 can be smoothly discharged from the cover 290 through the avoidance vacancy 237. .

It can be understood that the escape space 237 includes at least one of an avoidance hole and an avoidance notch.

Further, as shown in FIG. 37 , a first surrounding edge 238 is disposed inside the other of the first shell 232 and the second shell 234 , and the end of the channel 222 protrudes into the first surrounding edge 238 .

Wherein, by rationally setting the matching structure of the first housing 232 and the first surrounding edge 238, one of the first housing 232 and the second housing 234 is provided with the channel 222, and the first housing 232 and the second housing 232 The other of 234 is provided with a first surrounding edge 238 . When the first housing 232 and the second housing 234 are mated, the end of the passage 222 extends into the first surrounding edge 238, and the first surrounding edge 238 can limit the movement of the passage 222 to ensure that the first housing 232, the second The matching structure of the housing 234 and the passage 222 can further ensure the effective cooperation between the passage 222 and the first chamber 224 . In addition, since the end of the passage 222 extends into the first surrounding edge 238, the sealing of the joint between the first passage 222 and the first surrounding edge 238 can be ensured, so as to limit the flow path of the airflow and provide the cover 290 with a descending The noise function provides effective and reliable structural support.

Specifically, the first casing 232 is provided with a first surrounding edge 238, and the first surrounding edge 238 is located on the peripheral side of the first air inlet 226, and the second casing 234 is provided with a channel 222, and the free end of the channel 222 can extend Into the first perimeter 238.

Alternatively, the second housing 234 is provided with a first surrounding edge 238, and the first surrounding edge 238 is located at the periphery of the air outlet 228, and the first housing 232 is provided with a passage 222, and the free end of the passage 222 can extend into the first surrounding. Inside side 238.

Further, as shown in FIG. 42, the outer surface of the second sub-cover 240 is provided with a second surrounding edge 246, and the second surrounding edge 246 is located on the peripheral side of the second air inlet 242, and a part of the first sub-cover 220 protrudes into Inside the second surrounding edge 246 , a portion of the first sub-cover 220 located inside the second surrounding edge 246 is provided with a first air inlet 226 .

Wherein, by reasonably setting the matching structure of the first sub-cover 220 and the second sub-cover 240, the outer surface of the second sub-cover 240 is provided with a second surrounding edge 246, and a part of the first sub-cover 220 extends into the second surrounding edge Within 246. This setting increases the mating area and mating angle of the joint between the first sub-cover 220 and the second sub-cover 240, which is beneficial to ensure the sealing of the joint between the first sub-cover 220 and the second sub-cover 240, so as to limit the air flow The flow path provides an effective and reliable structural support for the noise reduction function of the cover body 290 .

Further, as shown in FIG. 38 and FIG. 39 , the cover body 290 further includes a second sealing portion 250, and the second sealing portion 250 is used to seal the joint between the first sub-cover 220 and the second surrounding edge 246, the first housing 232 and the second shell 234, the first edge 238 and the channel 222 are connected.

Wherein, by setting the second sealing part 250, the second sealing part 250 is located at the junction of the first sub-cover 220 and the second surrounding edge 246, the junction of the first housing 232 and the second housing 234, the first surrounding edge 238 and the connection of channel 222, so as to use the second sealing part 250 to seal the connection of the first sub-cover 220 and the second surrounding edge 246, the connection of the first shell 232 and the second shell 234, the first surrounding The junction of side 238 and channel 222 . This arrangement can prevent the airflow from leaking out from the junction of the first sub-cover 220 and the second surrounding edge 246, the junction of the first housing 232 and the second housing 234, and the junction of the first surrounding edge 238 and the channel 222. When the situation occurs, ensure the good sealing of the connection between the first sub-cover 220 and the second surrounding edge 246, the connection between the first housing 232 and the second housing 234, and the connection between the first surrounding edge 238 and the channel 222, In this way, the flow path of the airflow is defined, thereby ensuring the effective contact of the second chamber 244 and the first chamber 224 with the sound wave, and providing an effective and reliable structural support for improving the noise reduction effect of the cover 290 .

In addition, the second sealing portion 250 is located at the connection between the first sub-cover 220 and the second surround 246 , the connection between the first housing 232 and the second housing 234 , the connection between the first surround 238 and the channel 222 , It can play the role of vibration reduction. In this way, the hard contact between the first sub-cover 220 and the second surrounding edge 246 can be avoided, and the hard contact between the first housing 232 and the second housing 234 can be avoided when the cooking machine 100 is working. Contacting and avoiding hard contact between the first surrounding edge 238 and the channel 222 is beneficial to reduce and further enhance the noise reduction effect of the housing.

Specifically, the second sealing part 250 includes a plurality of sealing rings. The connection between the first sub-cover 220 and the second surround 246 , the connection between the first housing 232 and the second housing 234 , and the connection between the first surround 238 and the channel 222 are all provided with sealing rings.

Furthermore, the sealing ring is a rubber part.

Example 14:

As shown in FIG. 38 , FIG. 43 , FIG. 44 and FIG. 45 , the embodiment of the second aspect of the present application provides a cooking machine 100 , including: the cover body 290 of any embodiment in the first aspect.

Since the cooking machine 100 provided in the present application includes the cover body 290 of any embodiment in the first aspect, it has all the beneficial effects of the cover body 290 described above, and will not be stated here.

Further, as shown in FIG. 38 , FIG. 43 , FIG. 44 , FIG. 45 and FIG. 55 , the cooking machine 100 further includes a base body 10 , an outer cover 122 and a cup assembly. The outer cover 122 is detachably connected with the seat body 10, the outer cover 122 is provided with a third opening, the first sub-cover 220 of the cover 290 is detachably connected with the outer cover 122, the first sub-cover 220 is used to open or close the third opening, The seat body 10, the outer cover 122 and the first sub-cover 220 enclose the accommodation chamber 130; the cup body assembly is located in the accommodation chamber 130, the cup body assembly is detachably connected with the seat body 10, and the second sub-cover 240 of the cover body 290 is connected with the The cup assembly is detachably connected, and the second sub-cover 240 is used to open or close the open end of the cup assembly.

In detail, the cooking machine 100 also includes a base body 10, an outer cover 122 and a cup assembly, the outer cover 122 is provided with a third opening, the first sub-cover 220 of the cover body 290 is detachably connected with the outer cover 122, and the first sub-cover 220 is used for In order to open or close the third opening, and the base body 10 , the outer cover 122 and the first sub-cover 220 enclose an accommodating cavity 130 for accommodating the cup assembly. That is, the base body 10, the outer cover 122 and the first sub-cover 220 wrap the cup body assembly. That is to say, the base body 10, the outer cover 122 and the first sub-cover 220 cooperate to isolate the cup body assembly from the outside world. In this way, the external transmission of noise generated when the cooking machine 100 is in operation can be effectively reduced, which is beneficial to improving the noise reduction effect of the product. In addition, the base body 10, the outer cover 122 and the first sub-cover 220 also have the function of keeping and insulating the food inside the cup assembly, avoiding scalding the user, and improving the safety and reliability of the product.

When assembling the cooking machine 100, the cup assembly is first placed on the base 10, then the outer cover 122 is covered on the outside of the cup assembly and assembled with the base 10, and then the first sub-cover 220 is assembled on the third side of the outer cover 122. opening.

When disassembling the cooking machine 100 , the outer cover 122 and the first sub-cover 220 are removed from the base 10 first, and then the cup assembly can be separated from the base 10 .

Further, as shown in Figure 38, the seat body 10 includes: a seat body 112, the seat body 112 is provided with a fourth air duct, a first communication port 320, an air inlet 118 and an air outlet 119, the air inlet 118, the air outlet 119 and The first communication ports 320 are all connected to the fourth air duct; the noise reduction device 170 is located in the fourth air duct.

The cup body assembly includes: a cup body 142; a crushing knife 144, located in the cup body 142; a seat body 146, connected with the cup body 142, and the seat body 146 is detachably connected with the seat body 10; a motor 148, located in the seat body 146 , The motor 148 includes a drive shaft 150, the first end of the drive shaft 150 extends into the cup body 142 and is connected with the pulverizer 144;

The seat body 146 is provided with a second communication port, and the first communication port 320 communicates with the second communication port.

Wherein, the cup body assembly includes a cup body 142 , a crushing knife 144 , a seat body 146 , a motor 148 and a fan blade 152 . Wherein, the pulverizer 144 is located in the cup body 142, and the first end of the drive shaft 150 extends into the cup body 142 and is connected with the pulverizer 144, the motor 148 works, and the drive shaft 150 drives the pulverizer 144 to rotate to crush food.

It can be understood that when the cooking machine 100 is working, when the pulverizer 144 of the cup assembly rotates to crush food, the food hits the inner wall of the cup 142 to generate noise, and the motor 148 rotates at a high speed to generate rotational power, and the motor 148 works When heat is generated, the drive shaft 150 of the motor 148 is connected to the fan blade 152 of the cup assembly, and the fan blade 152 is used to dissipate heat from the motor 148 . When the motor 148 works and drives the fan blade 152 to rotate, vibration noise and wind resistance turbulent noise will be generated. That is to say, the main noise source of the cooking machine 100 also includes the motor 148 and the fan blade 152 .

Therefore, accommodating the cup assembly in the accommodating cavity 130 surrounded by the base body 10 , the outer cover 122 and the first sub-cover 220 can effectively reduce the operating noise of the cooking machine 100 .

When the cooking machine 100 is working, the motor 148 drives the fan blade 152 to rotate to inhale air from the air inlet 118 of the seat body 112, and then the air flows through the first communication port 320 to the second communication port. After the air flow passes through the motor 148 and the fan blade 152, The air flows to the noise reduction device 170 , and then is discharged from the seat body 10 through the air outlet 119 . This setting can ensure that the airflow flows through the noise reduction device 170, and then is discharged from the air outlet 119. The noise reduction device 170 is located in the fourth air duct, so as to ensure the effective contact between the noise reduction device 170 and the sound wave, so that the noise reduction device 170 can be used to achieve suction. noise reduction effect. And this setting can ensure the effective contact of the airflow with the motor 148 and the fan blade 152, so as to utilize the external cold air to dissipate heat to the motor 148 and the fan, can ensure the working temperature of the motor 148, and provide structural support for prolonging the service life of the motor 148.

That is to say, the base body 10 , the cover body assembly and the noise reduction device 170 cooperate to realize various forms of noise reduction processing, so as to improve the noise reduction effect of the cooking machine 100 .

Further, as shown in FIG. 38 and FIG. 39 , the cooking machine 100 further includes a third sealing portion 260 , and the third sealing portion 260 is used to seal the joint between the outer cover 122 and the cover 290 . This setting can prevent the airflow from leaking from the connection between the outer cover 122 and the cover 290, and ensure the good sealing of the connection between the outer cover 122 and the cover 290, so as to limit the flow path of the airflow, which is conducive to lifting the cooking machine 100. noise reduction effect.

In addition, the third sealing portion 260 is located at the connection between the outer cover 122 and the cover 290, which can play a role in damping vibrations. In this way, the hard contact between the connection between the outer cover 122 and the cover 290 can be avoided when the cooking machine 100 is working. It is beneficial to further improve the noise reduction effect of the cooking machine 100 .

In this embodiment, the third sealing portion 260 is located at the junction of the outer cover 122 and the second sub-cover 240 .

Further, as shown in Fig. 46 to Fig. 55, the noise reduction device 170 includes: a housing 172, a plurality of noise reduction cavities are arranged in the housing 172, and the housing 172 is also provided with a first air duct 174, the first air duct A plurality of communication structures 76 are provided on the side wall of 174 , and each noise reduction cavity communicates with at least one communication structure 76 ; wherein, the first air duct 174 communicates with the fourth air duct.

Wherein, the noise reduction device 170 includes a housing 172, and a plurality of noise reduction cavities are arranged in the housing 172, and the housing 172 is also provided with a first air channel 174, and a plurality of A communication structure 76 , wherein each noise reduction cavity communicates with at least one communication structure 76 . The sound waves generated by the cooking machine 100 are transmitted through the first air duct 174 to the plurality of communication structures 76 , enter into the plurality of noise reduction cavities, and then pass out of the noise reduction device 170 through the plurality of noise reduction cavities. That is to say, for the noise reduction chamber, the entrance and exit of the noise reduction chamber are the same structure (ie, the communication structure 76 ), and the sound wave is transmitted from the communication structure 76 to the noise reduction chamber, and then transmitted out from the communication structure 76 .

In addition, the number of noise reduction cavities is multiple, so the structure of multiple noise reduction cavities can be set in a targeted manner according to the target noise reduction frequency. For example, multiple specifications of noise reduction cavities are set for multiple different frequencies. Another example, Setting up multiple noise reduction chambers of the same specification for the same frequency is conducive to realizing broadband sound absorption and noise reduction, which can meet the diverse needs of users, and is conducive to improving product performance and market competitiveness.

In this embodiment, each noise reduction cavity communicates with a communication structure 76 .

In some other embodiments, each noise reduction chamber communicates with multiple communication structures 76 .

Further, as shown in FIGS. 49 to 51 , the plurality of noise reduction chambers includes a first noise reduction chamber 178, and the first noise reduction chamber 178 includes a resonance channel 180 and a resonance chamber 182, and the resonance channel 180 communicates with the resonance chamber 182 and the resonance chamber 182. The communication structure 76 ; wherein, the flow cross-sectional area of the resonance channel 180 is smaller than the flow cross-sectional area of the resonance chamber 182 .

Among them, by rationally setting the structure of multiple noise reduction cavities, the multiple noise reduction cavities include the first noise reduction cavity 178, the first noise reduction cavity 178 includes a resonance channel 180 and a resonance chamber 182, and the resonance channel 180 communicates with the resonance cavity Chamber 182 and communication structure 76. Specifically, when the cooking machine 100 is working, part of the sound waves in the fourth air channel propagate to the resonance chamber 182 through the resonance channel 180 , and then transmit to the resonance channel 180 from the resonance chamber 182 , and then to the first air channel 174 . That is to say, the entrance and exit of the first noise reduction chamber 178 have the same structure, and the sound waves are transmitted from the resonance channel 180 to the resonance chamber 182 , and then transmitted out from the resonance channel 180 .

By rationally setting the matching structure of the resonance channel 180 and the resonance chamber 182, the flow cross-sectional area of the resonance passage 180 is smaller than the flow cross-sectional area of the resonance chamber 182, that is, the resonance passage 180 and the resonance chamber 182 are jointly configured to resonate Cavity structure, when the sound wave reaches the resonant chamber 182, the part of the sound wave that is close to the natural frequency of the resonant cavity structure causes the resonance of the resonant cavity structure. The friction of the inner wall of the chamber 182 converts mechanical energy into thermal energy, thereby consuming sound energy, which can effectively achieve the effect of sound absorption and noise reduction.

In addition, the flow cross-sectional area of the resonance channel 180 is smaller than the flow cross-sectional area of the resonance chamber 182, that is, the structure of the first noise reduction cavity 178 is reasonably arranged, which is conducive to the coupling of sound waves with the first noise reduction cavity 178, thereby enabling The noise reduction effect of the noise reduction device 170 is guaranteed.

Further, the flow cross-sectional area S3 of the resonance channel 180, the volume V3 of the resonance chamber 182, the length L3 of the resonance channel 180, the sound velocity c3 and the target noise reduction frequency f3 of the cooking machine 100 satisfy:

L3≥2mm.

When the cooking machine 100 is working, the target noise reduction frequency characteristic remains unchanged. The flow cross-sectional area S3 of the resonance channel 180, the volume V3 of the resonance chamber 182, the length L3 of the resonance channel 180, and the sound velocity c3 are all the same as those of the cooking machine 100. The target noise reduction frequency f3 is relevant. That is to say, while ensuring the noise reduction effect of the noise reduction device 170, it can effectively adapt to the internal space layout of the cooking machine 100, which is conducive to reducing the occupancy rate of the noise reduction device 170 to the internal space of the cooking machine 100, and is conducive to realizing the cooking machine. 100's of miniaturization.

Specifically, the length L3 of the resonance channel 180 includes 3 mm, 4 mm, 5 mm, 6 mm, etc., which are not listed here.

Further, as shown in FIG. 50 and FIG. 51 , the multiple noise reduction cavities include a second noise reduction cavity 184 , the second noise reduction cavity 184 is a wavelength tube, and the wavelength tube communicates with the communication structure 76 .

Wherein, by rationally arranging the structure of multiple noise reduction cavities, the multiple noise reduction cavities include the second noise reduction cavity 184 , wherein the second noise reduction cavity 184 is a wavelength tube, and the wavelength tube communicates with the communication structure 76 . The size of the wavelength tube is related to the target noise reduction frequency of the cooking machine 100 . When the cooking machine 100 is working, the sound wave in the first air duct 174 is transmitted into the wavelength tube through the connecting structure 76 , and then transmitted out through the connecting structure 76 . That is to say, the wavelength tube has only one opening, the sound wave is transmitted into the wavelength tube through the connecting structure 76 , part of the sound wave is absorbed, and part of the sound wave is transmitted out from the same connecting structure 76 .

Specifically, the sound wave is introduced into the wavelength tube through the connecting structure 76, and is reflected after reaching the bottom of the wavelength tube. The reflected wave and the incident wave are superimposed to form a standing wave. When the structure is 76, resonance occurs. At this time, the amplitude of the particle is the largest, and the sound energy consumed is also the largest, so it has a significant sound absorption effect at the resonance frequency.

Specifically, the first noise reduction chamber 178 includes a resonance channel 180 and a resonance chamber 182 , and the target noise reduction frequency is determined according to the volume of the resonance chamber 182 , the length of the resonance channel 180 and the cross-sectional area of the resonance channel 180 . The first noise reduction chamber 178 belongs to a narrowband muffler. The noise reduction frequency of the second noise reduction cavity 184 (that is, the wavelength tube) is related to the length of the wavelength tube. The longer the wavelength tube, the lower the noise reduction frequency. Therefore, the first noise reduction cavity 178 and the second noise reduction cavity 184 are mutually With the combination, the anechoic bandwidth can be increased and the noise in a wide frequency range can be reduced.

Further, the speed of sound c4, the length L4 of the wavelength tube and the target noise reduction frequency f4 of the cooking machine 100 satisfy:

When the cooking machine 100 is working, the target noise reduction frequency characteristic remains unchanged, and the sound velocity c4, the length L4 of the wavelength tube and the target noise reduction frequency f4 of the cooking machine 100 satisfy:

That is, the sound velocity c4, the length L4 of the wavelength tube and the target noise reduction frequency f4 of the cooking machine 100 are related. The length of the wavelength tube is inversely related to the target noise reduction frequency. The longer the length of the wavelength tube, the lower the target noise reduction frequency; the shorter the length of the wavelength tube, the higher the target noise reduction frequency.

Further, the target noise reduction frequencies corresponding to any two noise reduction cavities among the plurality of noise reduction cavities are different. In this way, multiple noise reduction cavities can be used to reduce noise corresponding to multiple target noise reduction frequencies, providing effective and reliable structural support for broadband sound absorption.

Further, as shown in Figures 52 to 54, the housing 172 includes a multi-layer housing body 186, the first air channel 174 includes a plurality of sub-air channels, and each layer of the housing body 186 is provided with a sub-air channel; any two adjacent A plurality of noise reduction cavities are enclosed between the shell bodies 186 . That is to say, there are multiple layers of areas inside the housing 172, and multiple noise reduction cavities are arranged in each layer area. This setting reasonably arranges the internal space of the noise reduction device 170, increases the number of noise reduction cavities, and is beneficial to According to the needs of use, the structure of multiple noise reduction cavities is set in a targeted manner, which provides effective structural support for noise reduction corresponding to multiple target noise reduction frequencies.

Further, as shown in FIG. 49 to FIG. 54, the shell body 186 includes: a partition 188, the partition 188 is provided with a through hole, and the sub-air channel is located around the through hole; a surrounding plate 192 is arranged on the partition 188, In any two adjacent shell bodies 186 , the shroud 192 of one shell body 186 abuts against the partition 188 of the other shell body 186 , and a plurality of noise reduction cavities are enclosed between the partition 188 and the shroud 192 . Shell body 186 includes bulkhead 188 and enclosure 192 . The partition 188 is provided with a through hole, and the sub-air channel is located on the peripheral side of the through hole, and the through hole can ensure that any two adjacent sub-air channels among the plurality of sub-air channels are connected.

Further, in any two adjacent shell bodies 186 , the surrounding plates 192 of one shell body 186 are alternately arranged with the surrounding plates 192 of the other shell body 186 . While satisfying the use requirement of forming multiple noise reduction cavities, it is beneficial to increase the distance between two adjacent baffles in each shell body 186, so that the processing difficulty of producing the shell body 186 can be reduced, which is beneficial The production cost is reduced, and the service life of the mold for producing the shell body 186 is extended.

Specifically, the noise reducing device 170 further includes a first sealing member, which is used to seal the connection between any two adjacent shell bodies 186 . In this way, the air flow can be prevented from leaking from the connection of any two adjacent shell bodies 186, and the good sealing of the joint between two adjacent shell bodies 186 can be ensured, so as to limit the flow path of the air flow, thereby ensuring noise reduction The effective contact between the cavity and the sound wave provides an effective and reliable structural support for improving the noise reduction effect of the noise reduction device 170 .

In addition, the first sealing member is located at the joint of any two adjacent shell bodies 186, which can play a role of vibration reduction, so that the hard contact between the two adjacent shell bodies 186 can be avoided when the cooking machine 100 is working, and there is It is beneficial to reduce and further improve the noise reduction effect of the noise reduction device 170 .

Specifically, the first sealing member is a sealing ring. Furthermore, the first sealing element is a rubber element.

Further, as shown in FIG. 54 , the two outermost shell bodies 186 in the multilayer shell bodies 186 are referred to as the first shell body and the second shell body, at least one of the first shell body and the second shell body A guide post 196 is provided, and the case body 186 located between the first case body and the second case body is provided with a guide hole, and the guide post 196 can be inserted into the guide hole. By rationally setting the matching structure of the multi-layer shell body 186, the two outermost shell bodies 186 in the multi-layer shell body 186 are recorded as the first shell body and the second shell body, and the first shell body is provided with a guide For the post 196, the second shell body is provided with a guide post 196, or both the first shell body and the second shell body are provided with a guide post 196. In addition, the housing body 186 located between the first housing body and the second housing body is provided with a guide hole. In this way, when the multi-layer shell body 186 is assembled, the guide post 196 can be inserted into the guide hole, so as to complete the assembly of the multi-layer shell body 186 . The guide post 196 is mated with the guide hole to limit the relative displacement of the two adjacent shell bodies 186 , so as to ensure the matching dimensions between the two adjacent shell bodies 186 , thereby ensuring the overall dimensions of the noise reducing device 170 .

Further, as shown in FIG. 53 , the partition 188 is provided with a slot 194 , and in any two adjacent shell bodies 186 , the surrounding plate 192 of one shell body 186 is inserted into the slot 194 of the other shell body 186 . The slot 194 can wrap the end of the shroud 192 inserted therein, which is beneficial to improve the airtightness of the connection between the shroud 192 and the partition 188 , and provides effective and reliable structural support for defining the flow path of the airflow.

Further, as shown in FIG. 38 , the outer surface of the casing 172 is provided with a water receiving tank 200 and a water leakage hole 202 , and the water receiving tank 200 communicates with the water leakage hole 202 ; That is, if the condensed water drops onto the housing 172, the condensed water can flow along the water receiving tank 200 to the water leakage hole 202, and then be discharged from the noise reduction device 170, reducing the probability of condensed water leaking into the noise reduction chamber , which can ensure the noise reduction effect of the noise reduction device 170 . This configuration enriches the use functions of the noise reduction device 170 and improves the use performance and market competitiveness of the noise reduction device 170 .

Further, an air guiding groove is provided on a side of the housing 172 away from the water receiving tank 200 . The noise reduction device 170 has the function of guiding the airflow, so as to limit the flow path of the airflow. This configuration enriches the use functions of the noise reduction device 170 and improves the use performance and market competitiveness of the noise reduction device 170 .

Further, as shown in FIG. 38 and FIG. 55 , the seat body 10 further includes sound-absorbing cotton 210 , the sound-absorbing cotton 210 is located in the fourth air duct, and the sound-absorbing cotton 210 is located around the noise reducing device 170 .

Wherein, the seat body 10 also includes sound-absorbing cotton 210, and the sound-absorbing cotton 210 is located in the fourth air duct, and the sound-absorbing cotton 210 can play the role of noise reduction, that is, the sound-absorbing cotton 210 cooperates with the noise-reducing device 170 to realize sound waves. The multi-level noise reduction processing is beneficial to improve the noise reduction effect of the cooking machine 100 .

Specifically, a motor 148 and a fan blade 152 are disposed inside the seat body 146 , the motor 148 drives the fan blade 152 to rotate, and the seat body 146 communicates with the fourth air duct. When working, the motor 148 drives the fan blade 152 to rotate to inhale air from the air inlet 118 of the base body 10. After the air flow passes through the sound-absorbing cotton 210, the motor 148 and the fan blade 152, it flows to the noise reduction device 170, and then the food is discharged from the air outlet 119. Machine 100. That is to say, after the outside cold air enters the fourth air duct through the air inlet 118, it first passes through the sound-absorbing cotton 210 for noise reduction, and then passes through the noise reduction device 170 for noise reduction, realizing multi-stage noise reduction processing. The sound-absorbing cotton 210 is located around the noise reduction device 170, providing effective structural support for multi-stage noise reduction treatment.

Further, as shown in Figure 55, the top of the seat body 112 is provided with a first communication port 320, the bottom of the seat body 112 is provided with an air inlet 118 and an air outlet 119, at least a part of the air inlet 118 is provided corresponding to the sound-absorbing cotton 210, At least a part of the air outlet 119 is disposed corresponding to the first air channel 174 .

Wherein, by rationally setting the structure of the seat body 112 , the seat body 112 is provided with a first communication port 320 , an air inlet 118 and an air outlet 119 . Specifically, the top of the seat body 112 is provided with a first communication port 320 , and the bottom of the seat body 112 is provided with an air inlet 118 and an air outlet 119 .

The cup body assembly of the cooking machine 100 is detachably arranged on the top of the base body 10, and the first communication port 320 is arranged on the top of the seat body 112, which can ensure that the airflow entering the fourth air channel from the air inlet 118 can pass through the first communication port 320. Flow to the motor 148 of the cup assembly, that is, to ensure the smoothness of the air flow path.

In addition, the bottom of the seat body 112 is provided with an air inlet 118 and an air outlet 119, which can hide the air inlet 118 and the air outlet 119 while ensuring the smoothness of the air flow, so as to prevent the air inlet 118 and the air outlet 119 from being exposed. It is beneficial to improve the aesthetics of the product appearance.

Example 15:

As shown in FIG. 38 , the cooking machine 100 includes a first sub-cover 220 , a second sub-cover 240 , an outer cover 122 , a cup assembly and a base 10 . Wherein, the cup assembly is located inside the outer cover 122 . Wherein, the first sub-cover 220 , the outer cover 122 and the base body 10 are integrated to enclose the cup assembly that generates the sound source.

The outer cover 122 is used to isolate the internal sound source, so as to reduce the external radiation of internal noise.

Due to the lack of airtight sealing, the first sub-cover 220 is added to reduce the whipping noise and the noise inside the cup body 142 while exhausting.

As shown in FIG. 38 , the noise reduction device 170 is located in the fourth air passage of the base body 10 , so that when the motor 148 drives the fan blade 152 to rotate, the fluid and noise generated by the fan blade 152 pass through the first air passage 174 of the noise reduction device 170 . Use the exhaust noise reduction function of the noise reduction device 170 to reduce the noise of the fan and the noise inside the outer cover 122 , and add sound-absorbing materials such as sound-absorbing cotton 210 on both sides of the seat body 146 to consume the noise energy inside the outer cover 122 .

As shown in Figure 38 and Figure 39, the upper end of the outer cover 122 is provided with a third sealing part 260, when the outer cover 122 is fastened with the cover body 290, the third sealing part 260 forms a seal with the second sub-cover 240 to ensure that the cup body 142 and the The noise radiated by the housing 146 is within the sealed area formed by the housing 122 . The first sub-cover 220 and the second sub-cover 240 are connected through the second sealing part 250, so that the first sub-cover 220 and the second sub-cover 240 form a closed channel in this area, so that the noise in the cup body 142 is directly transmitted to the The cover 290 uses the principle of noise reduction of the cover 290 to reduce noise.

As shown in Figure 33, the first sub-cover 220 is provided with an air outlet 228, and the first sub-cover 220 has an exhaust function, which is used to discharge the gas in the cup body 142 to the external space, and at the same time, the stirring noise passes through the first sub-cover 220. Cooperate with the second sub-cover 240 for noise reduction.

As shown in FIGS. 34 to 37 , the first sub-cover 220 includes a first housing 232 and a second housing 234 . The first chamber 224 is formed in the first housing 232 and the second housing 234 , and the first chamber 224 communicates with the outside through the communication structure 230 through the channel 222 .

As shown in FIG. 36 , the channel 222 is located on the second housing 234 , the communication structure 230 is located on the channel 222 , and the communication structure 230 is a communication groove. The first chamber 224 is formed after the first shell 232 and the second shell 234 are snapped together.

As shown in FIG. 17 to FIG. 23 , the noise reduction device 170 includes a plurality of noise reduction cavities, and uses different noise reduction cavities to eliminate noise of a specific frequency.

As shown in FIG. 49 to FIG. 51 , the multiple noise reduction chambers include a first noise reduction chamber 178, the first noise reduction chamber 178 includes a resonance channel 180 and a resonance chamber 182, and the resonance channel 180 communicates with the resonance chamber 182 and the communication structure 76 ; Wherein, the flow cross-sectional area of the resonance channel 180 is smaller than the flow cross-sectional area of the resonance chamber 182 . The sound wave enters the resonance channel 180 from the first air duct 174 and consumes sound energy inside the resonance chamber 182 to reduce noise of a specific frequency.

As shown in Figure 49, it is a schematic cross-sectional view of the upper layer of the noise reduction device 170; as shown in Figure 50, it is a schematic cross-sectional view of the middle layer of the noise reduction device 170; as shown in Figure 51, a schematic cross-sectional view of the bottom layer of the noise reduction device 170 . The cross-sectional view of the middle layer, similar to the upper and lower layers, includes a first noise reduction cavity 178 .

Specifically, the noise reduction device 170 and the sound-absorbing cotton 210 are arranged in the seat body 10 . Wherein, the thickness of the sound-absorbing cotton 210 is greater than 10mm.

Specifically, the distance between the first shell 232 and the second shell 234 of the first sub-cover 220 is greater than or equal to 8 mm, such as 9 mm, 10 mm, 11 mm, 12 mm, etc., which are not listed here.

Specifically, as shown in FIG. 42 , the second sub-cover 240 is further provided with a third surrounding edge 280 , and the third surrounding edge 280 has a function of stabilizing flow, so as to ensure that hot air can flow to the second air inlet 242 in an orderly manner.

A ring-shaped damping soft rubber (referred to as the first sealing member) is arranged between the outer cover 122 and the seat body 10, and the cut surface is L-shaped, which can realize sealing and damping at the same time.

A shock absorber is provided at the bottom of the cup assembly, and/or a large shock absorber is designed on the base 10 to realize the vibration-damping fit between the cup 142 and the base 10 .

The bottom of the seat body 10 is provided with an air inlet 118, which ensures the entry of cold air from the outside to achieve good heat dissipation. At the same time, the air inlet 118 is more conducive to sound waves entering the sound-absorbing cotton 210 and the noise reduction device 170 at the bottom through the seat body 10, thereby achieving more effective noise reduction.

Example 16:

As shown in FIGS. 56 to 66 , the embodiment of the first aspect of the present application provides a cooking machine 100 including a base 110 , a cover assembly 120 and a cup assembly 140 .

The cover assembly 120 is detachably connected to the base 110 , the base 110 and the cover assembly 120 enclose a housing chamber 130 , the cup assembly 140 is located in the housing chamber 130 , and the cup assembly 140 is detachably connected to the base 110 .

In detail, the cooking machine 100 includes a base 110 , a cover assembly 120 and a cup assembly 140 . Through the matching structure of the base 110 and the cover assembly 120, a housing chamber 130 is enclosed between the base 110 and the housing assembly 120, the cup assembly 140 is located in the housing chamber 130, and the base 110 and the housing assembly 120 connect the cup assembly 140 wrapped up. That is to say, the base 110 cooperates with the cover assembly 120 to isolate the cup assembly 140 from the outside. In this way, the external transmission of noise generated when the cooking machine 100 is in operation can be effectively reduced, which is beneficial to improving the noise reduction effect of the product. In addition, the base 110 and the cover assembly 120 also have the function of keeping the food inside the cup assembly 140 warm and insulated, avoiding scalding the user, and improving the safety and reliability of the product.

Example 17:

As shown in FIGS. 56 to 66 , on the basis of Embodiment 16, Embodiment 17 provides a cooking machine 100 including a base 110 , a cover assembly 120 and a cup assembly 140 . The cover assembly 120 is detachably connected to the base 110 , the base 110 and the cover assembly 120 enclose an accommodation chamber 130 , the cup assembly 140 is located in the accommodation chamber 130 , and the cup assembly 140 is detachably connected to the base 110 .

Further, as shown in FIG. 61 and FIG. 62 , the cooking machine 100 further includes: a first seal 160 , and the first seal 160 is used to seal the joint between the cover assembly 120 and the base 110 .

In detail, the cooking machine 100 also includes a first sealing member 160, which is arranged so that the first sealing member 160 is located at the junction of the cover body assembly 120 and the base 110, so that the first sealing member 160 is used to seal the connection between the cover body assembly 120 and the base 110. Junction.

This setting can prevent the airflow from leaking from the connection between the cover assembly 120 and the base 110, and ensure the good sealing of the connection between the cover assembly 120 and the base 110, so as to limit the flow path of the airflow, which is conducive to lifting The noise reduction effect of the cooking machine 100.

In addition, the first sealing member 160 is located at the junction of the cover assembly 120 and the base 110, and can play a role in damping vibrations, so that the cooking machine 100 can avoid hard contact between the junction of the cover assembly 120 and the base 110. Contact is conducive to further improving the noise reduction effect of the cooking machine 100 .

Specifically, the first sealing member 160 is a sealing ring. A sealing ring is provided at the joint between the cover assembly 120 and the base 110 . Furthermore, the sealing ring is a rubber part.

Further, as shown in FIG. 61 and FIG. 62 , the side wall of the cover assembly 120 is provided with a first notch, and the side wall of the base 110 is provided with a second notch; the first sealing member 160 includes a first sealing portion 162 and a second Sealing portion 164; a part of the first sealing portion 162 is located at the first notch, and another part of the first sealing portion 162 is located at the second notch; along the height direction of the cup assembly 140, the second sealing portion 164 is located at the cover assembly 120 and base 110.

Wherein, the first sealing member 160 includes a first sealing portion 162, the side wall of the cover assembly 120 is provided with a first notch, the side wall of the base 110 is provided with a second notch, and the first notch and the second notch enclose a space for accommodating the second notch. A space for the sealing portion 162 . That is, a part of the first sealing part 162 is located at the first notch, and another part of the first sealing part 162 is located at the second notch.

The first sealing member 160 further includes a second sealing portion 164 , and the second sealing portion 164 is located between the cover assembly 120 and the base 110 in the height direction of the cup assembly 140 .

This arrangement increases the contact area and contact angle between the first sealing member 160 and the cover assembly 120 and the base 110, and can block the connection between the cover assembly 120 and the base 110 from multiple directions to lift the cover assembly 120. The airtightness of the joint with the base 110 can effectively reduce the amount of air leakage from the joint between the cover assembly 120 and the base 110 , which is beneficial to improve the noise reduction effect of the cooking machine 100 .

Specifically, the first sealing portion 162 is connected to the second sealing portion 164 , for example, the first sealing portion 162 and the second sealing portion 164 are jointly configured in a “T” shape.

Example 18:

As shown in FIGS. 56 to 66 , on the basis of Embodiment 16 or Embodiment 17, Embodiment 3 provides a cooking machine 100 including a base 110 , a cover assembly 120 and a cup assembly 140 . The cover assembly 120 is detachably connected to the base 110 , the base 110 and the cover assembly 120 enclose an accommodation chamber 130 , the cup assembly 140 is located in the accommodation chamber 130 , and the cup assembly 140 is detachably connected to the base 110 .

Further, as shown in Figure 60, Figure 61 and Figure 62, the cup body assembly 140 includes: a cup body 142; a crushing knife 144, located in the cup body 142; a seat body 146, connected with the cup body 142, and the seat body 146 is connected with the cup body 142 The base 110 is detachably connected; the motor 148 is located in the seat body 146, and the motor 148 includes a drive shaft 150, and the first end of the drive shaft 150 extends into the cup body 142 and is connected with the crushing knife 144; the fan blade 152 is located in the seat body In 146 , the second end of the drive shaft 150 is connected to the fan blade 152 .

In detail, the cup body assembly 140 includes a cup body 142 , a crushing knife 144 , a seat body 146 , a motor 148 and a fan blade 152 . Wherein, the pulverizer 144 is located in the cup body 142, and the first end of the drive shaft 150 extends into the cup body 142 and is connected with the pulverizer 144, the motor 148 works, and the drive shaft 150 drives the pulverizer 144 to rotate to crush food.

It can be understood that when the cooking machine 100 is working, when the pulverizer 144 of the cup assembly 140 rotates to crush food, the food hits the inner wall of the cup 142 to generate noise, and the motor 148 rotates at a high speed to generate rotational power. The motor 148 Heat is generated during operation, so that the drive shaft 150 of the motor 148 is connected to the fan blade 152 of the cup assembly 140 , and the motor 148 is dissipated by the fan blade 152 . When the motor 148 works and drives the fan blade 152 to rotate, vibration noise and wind resistance turbulent noise will be generated. That is to say, the main noise source of the cooking machine 100 also includes the motor 148 and the fan blade 152 .

Therefore, accommodating the cup assembly 140 in the accommodation cavity 130 surrounded by the base 110 and the cover assembly 120 can effectively reduce the operating noise of the cooking machine 100 .

Example 19:

As shown in FIGS. 56 to 66 , on the basis of Embodiment 18, Embodiment 19 provides a cooking machine 100 including a base 110 , a cover assembly 120 and a cup assembly 140 . The cover assembly 120 is detachably connected to the base 110 , the base 110 and the cover assembly 120 enclose an accommodation chamber 130 , the cup assembly 140 is located in the accommodation chamber 130 , and the cup assembly 140 is detachably connected to the base 110 .

The cup body assembly 140 includes: a cup body 142; a crushing knife 144 located in the cup body 142; a seat body 146 connected to the cup body 142, and the seat body 146 is detachably connected to the base 110; a motor 148 located in the seat body 146 , The motor 148 includes a drive shaft 150, the first end of the drive shaft 150 extends into the cup body 142 and is connected with the pulverizer 144;

Further, as shown in Figures 67 to 82, the base 110 includes: a seat body 112, the seat body 112 is provided with a fifth air duct, a first opening 116, an air inlet 118 and an air outlet 119, the air inlet 118, the air outlet 119 and the first opening 116 are both communicated with the fifth air passage, the seat body 146 is provided with a second opening, the first opening 116 is communicated with the second opening; the noise reducing device 170 is located in the fifth air passage.

In detail, the base 110 includes a seat body 112, the seat body 112 is provided with a fifth air duct, a first opening 116, an air inlet 118 and an air outlet 119, the fifth air duct communicates with the air inlet 118, and the fifth air duct communicates with the air outlet 119 , and the fifth air passage communicates with the first opening 116 , wherein the noise reducing device 170 is located in the fifth air passage.

When the cooking machine 100 is working, the motor 148 drives the fan blade 152 to rotate, so as to inhale air from the air inlet 118 of the seat body 112, and then the air flow flows through the first opening 116 to the second opening. After the air flow passes through the motor 148 and the fan blade 152, it flows downward noise device 170, and then the base 110 is discharged from the air outlet 119. This setting can ensure that the airflow flows through the noise reduction device 170, and then is discharged from the air outlet 119. The noise reduction device 170 is located in the fifth air duct, so as to ensure the effective contact between the noise reduction device 170 and the sound wave, so that the noise reduction device 170 can be used to achieve suction. noise reduction effect. And this setting can ensure the effective contact of the airflow with the motor 148 and the fan blade 152, so as to utilize the external cold air to dissipate heat to the motor 148 and the fan, can ensure the working temperature of the motor 148, and provide structural support for prolonging the service life of the motor 148.

That is to say, the base 110 , the cover assembly 120 and the noise reduction device 170 cooperate to realize various forms of noise reduction processing, so as to improve the noise reduction effect of the cooking machine 100 .

Further, as shown in Fig. 67 to Fig. 82, the noise reduction device 170 includes: a housing 172, a plurality of noise reduction cavities are arranged in the housing 172, and the housing 172 is also provided with a first air duct 174, the first air duct A plurality of communication parts 176 are provided on the side wall of 174 , and each noise reduction cavity communicates with at least one communication part 176 ; wherein, the first air duct 174 communicates with the fifth air duct.

Wherein, the noise reduction device 170 includes a housing 172, and a plurality of noise reduction cavities are arranged in the housing 172, and the housing 172 is also provided with a first air channel 174, and a plurality of A communicating portion 176 , wherein each noise reduction cavity communicates with at least one communicating portion 176 . The sound waves generated when the cooking machine 100 is in operation propagate through the first air duct 174 to the plurality of communicating parts 176 , enter into the plurality of noise reduction chambers, and then pass out of the noise reduction device 170 through the plurality of noise reduction chambers. That is to say, for the noise reduction chamber, the inlet and outlet of the noise reduction chamber are of the same structure (ie, the communication part 176 ), and the sound waves are transmitted from the communication part 176 into the noise reduction chamber, and then transmitted out from the communication part 176 .

Further, as shown in FIGS. 78 to 80 , the plurality of noise reduction chambers includes a first noise reduction chamber 178, and the first noise reduction chamber 178 includes a resonance pipe 180 and a resonance chamber 182, and the resonance pipe 180 communicates with the resonance chamber 182 and the resonance chamber 182. The communication part 176 ; wherein, the cross-sectional area of the resonant pipe 180 is smaller than the cross-sectional area of the resonant chamber 182 .

Among them, by rationally setting the structure of multiple noise reduction cavities, the multiple noise reduction cavities include the first noise reduction cavity 178, the first noise reduction cavity 178 includes a resonance pipeline 180 and a resonance chamber 182, and the resonance pipeline 180 communicates with the resonance cavity Chamber 182 and communication portion 176. Specifically, when the cooking machine 100 is working, part of the sound waves in the fifth air duct propagate to the resonance chamber 182 through the resonance duct 180 , and then transmit to the resonance duct 180 from the resonance chamber 182 , and then to the first air duct 174 . That is to say, the entrance and exit of the first noise reduction chamber 178 are of the same structure, and the sound wave is transmitted from the resonance pipe 180 to the resonance chamber 182 , and then transmitted out from the resonance pipe 180 .

Further, the flow cross-sectional area of the resonance pipe 180 is smaller than the flow cross-sectional area of the resonance chamber 182, that is, the structure of the first noise reduction cavity 178 is reasonably arranged, which is conducive to the coupling of sound waves with the first noise reduction cavity 178, thereby The noise reduction effect of the noise reduction device 170 can be ensured.

L1≥2mm.

When the cooking machine 100 is working, the target noise reduction frequency characteristic remains unchanged. The flow cross-sectional area S1 of the resonance pipe 180, the volume V1 of the resonance chamber 182, the length L1 of the resonance pipe 180, and the sound velocity c1 are all consistent with those of the cooking machine 100. The target noise reduction frequency f1 is relevant. Therefore, based on the sound velocity c1, the target noise reduction frequency of the cooking machine 100 and the internal space of the cooking machine 100, the flow cross-sectional area S1 of the resonance pipe 180, the volume V1 of the resonance chamber 182, and the length L1 of the resonance pipe 180 are determined. That is to say, while ensuring the noise reduction effect of the noise reduction device 170, it can effectively adapt to the internal space layout of the cooking machine 100, which is conducive to reducing the occupancy rate of the noise reduction device 170 to the internal space of the cooking machine 100, and is conducive to realizing the cooking machine. 100's of miniaturization.

Further, as shown in FIG. 80 , the multiple noise reduction cavities include a second noise reduction cavity 184 , the second noise reduction cavity 184 is a wavelength tube, and the wavelength tube communicates with the communication part 176 .

Wherein, by reasonably arranging the structures of multiple noise reduction cavities, the multiple noise reduction cavities include the second noise reduction cavity 184 , wherein the second noise reduction cavity 184 is a wavelength tube, and communicates the wavelength tube with the communication part 176 . The size of the wavelength tube is related to the target noise reduction frequency of the cooking machine 100 . When the cooking machine 100 is working, the sound wave in the first air duct 174 is transmitted into the wavelength tube through the connecting portion 176 , and then transmitted out through the connecting portion 176 . That is to say, the wavelength tube has only one opening, the sound wave is transmitted into the wavelength tube through the connecting portion 176 , part of the sound wave is absorbed, and part of the sound wave is transmitted through the same connecting portion 176 .

Specifically, the first noise reduction chamber 178 includes a resonance pipe 180 and a resonance chamber 182 , and the target noise reduction frequency is determined according to the volume of the resonance chamber 182 , the length of the resonance pipe 180 and the cross-sectional area of the resonance pipe 180 . The first noise reduction chamber 178 belongs to a narrowband muffler. The noise reduction frequency of the second noise reduction cavity 184 (that is, the wavelength tube) is related to the length of the wavelength tube. The longer the wavelength tube, the lower the noise reduction frequency. Therefore, the first noise reduction cavity 178 and the second noise reduction cavity 184 are mutually With the combination, the anechoic bandwidth can be increased and the noise in a wide frequency range can be reduced.

When the cooking machine 100 is working, the target noise reduction frequency characteristic remains unchanged, and the sound velocity c2, the length L2 of the wavelength tube and the target noise reduction frequency f2 of the cooking machine 100 satisfy:

Further, as shown in Figure 81 and Figure 82, the housing 172 includes a multi-layer shell body 186, the first air channel 174 includes a plurality of sub-air channels, each layer of the shell body 186 is provided with a sub-air channel; any two adjacent A plurality of noise reduction cavities are enclosed between the shell bodies 186 . That is to say, there are multiple layers of areas inside the housing 172, and multiple noise reduction cavities are arranged in each layer area. This setting reasonably arranges the internal space of the noise reduction device 170, increases the number of noise reduction cavities, and is beneficial to According to the needs of use, the structure of multiple noise reduction cavities is set in a targeted manner, which provides effective structural support for noise reduction corresponding to multiple target noise reduction frequencies.

Further, the first air duct 174 includes a plurality of sub-air ducts, and one sub-air duct is provided on each shell body 186 . After the multi-layer shell body 186 is assembled, any two adjacent sub-air ducts among the plurality of sub-air ducts are correspondingly connected, that is, the plurality of sub-air ducts enclose the first air duct 174 .

Further, as shown in Figures 78 to 82, the shell body 186 includes: a partition 188, the partition 188 is provided with a through hole, and the sub-air channel is located on the periphery of the through hole; the surrounding plate 192 is arranged on the partition 188, In any two adjacent shell bodies 186 , the shroud 192 of one shell body 186 abuts against the partition 188 of the other shell body 186 , and a plurality of noise reduction cavities are enclosed between the partition 188 and the shroud 192 . Shell body 186 includes bulkhead 188 and enclosure 192 . The partition 188 is provided with a through hole, and the sub-air channel is located on the peripheral side of the through hole, and the through hole can ensure that any two adjacent sub-air channels among the plurality of sub-air channels are connected.

Specifically, the noise reduction device 170 further includes a third sealing member, and the third sealing member is used to seal the connection between any two adjacent shell bodies 186 . In this way, the air flow can be prevented from leaking from the connection of any two adjacent shell bodies 186, and the good sealing of the joint between two adjacent shell bodies 186 can be ensured, so as to limit the flow path of the air flow, thereby ensuring noise reduction The effective contact between the cavity and the sound wave provides an effective and reliable structural support for improving the noise reduction effect of the noise reduction device 170 .

In addition, the third sealing member is located at the junction of any two adjacent shell bodies 186, which can play a role of vibration reduction, so that the hard contact between the two adjacent shell bodies 186 can be avoided when the cooking machine 100 is working. It is beneficial to reduce and further improve the noise reduction effect of the noise reduction device 170 .

Specifically, the third sealing member is a sealing ring. Furthermore, the third sealing element is a rubber element.

Further, as shown in FIG. 82, the two outermost shell bodies 186 in the multilayer shell bodies 186 are referred to as the first shell body and the second shell body, and at least one of the first shell body and the second shell body A guide post 196 is provided, and the case body 186 located between the first case body and the second case body is provided with a guide hole, and the guide post 196 can be inserted into the guide hole. By rationally setting the matching structure of the multi-layer shell body 186, the two outermost shell bodies 186 in the multi-layer shell body 186 are recorded as the first shell body and the second shell body, and the first shell body is provided with a guide For the post 196, the second shell body is provided with a guide post 196, or both the first shell body and the second shell body are provided with a guide post 196. In addition, the housing body 186 located between the first housing body and the second housing body is provided with a guide hole. In this way, when the multi-layer shell body 186 is assembled, the guide post 196 can be inserted into the guide hole, so as to complete the assembly of the multi-layer shell body 186 . The guide post 196 is mated with the guide hole to limit the relative displacement of the two adjacent shell bodies 186 , so as to ensure the matching dimensions between the two adjacent shell bodies 186 , thereby ensuring the overall dimensions of the noise reducing device 170 .

Further, as shown in FIG. 77 , the partition 188 is provided with a slot 194 , and in any two adjacent shell bodies 186 , the surrounding plate 192 of one shell body 186 is inserted into the slot 194 of the other shell body 186 . The slot 194 can wrap the end of the shroud 192 inserted therein, which is beneficial to improve the airtightness of the connection between the shroud 192 and the partition 188 , and provides effective and reliable structural support for defining the flow path of the airflow.

Further, as shown in Figure 72, Figure 74 and Figure 81, the outer surface of the housing 172 is provided with a water receiving tank 200 and a water leakage hole 202, and the water receiving tank 200 communicates with the water leakage hole 202; wherein, the noise reduction chamber is located at the water leakage hole 202 side. That is, if the condensed water drops onto the housing 172, the condensed water can flow along the water receiving tank 200 to the water leakage hole 202, and then be discharged from the noise reduction device 170, reducing the probability of condensed water leaking into the noise reduction chamber , which can ensure the noise reduction effect of the noise reduction device 170 . This configuration enriches the use functions of the noise reduction device 170 and improves the use performance and market competitiveness of the noise reduction device 170 .

Further, as shown in FIG. 70 and FIG. 71 , the base 110 further includes sound-absorbing cotton 210 , the sound-absorbing cotton 210 is located in the fifth air duct, and the sound-absorbing cotton 210 is located around the noise reduction device 170 .

Wherein, base 110 also includes sound-absorbing cotton 210, and sound-absorbing cotton 210 is located in the fifth air duct, and sound-absorbing cotton 210 can play the role of noise reduction, that is, sound-absorbing cotton 210 cooperates with noise-reducing device 170 to achieve multiple sound waves. Level noise reduction processing is beneficial to improve the noise reduction effect of the cooking machine 100.

Specifically, the cooking machine 100 includes a cup body assembly 140, and the cup body assembly 140 includes a seat body 146, and a motor 148 and a fan blade 152 are arranged in the seat body 146, and the motor 148 drives the fan blade 152 to rotate, and the seat body 146 and the fifth air duct connected. When working, the motor 148 drives the fan blade 152 to rotate to inhale air from the air inlet 118 of the base 110. After passing through the sound-absorbing cotton 210, the motor 148 and the fan blade 152, the air flows to the noise reduction device 170, and then is discharged from the cooking machine through the air outlet 119. 100. That is to say, after the outside cold air enters the fifth air channel from the air inlet 118, it first passes through the sound-absorbing cotton 210 for noise reduction, and then passes through the noise reduction device 170 for noise reduction, realizing multi-stage noise reduction processing. The sound-absorbing cotton 210 is located around the noise reduction device 170, providing effective structural support for multi-stage noise reduction treatment.

Further, as shown in FIG. 67 and FIG. 71 , the top of the seat body 112 is provided with a first opening 116 , and the bottom of the seat body 112 is provided with an air inlet 118 and an air outlet 119 , at least a part of the air inlet 118 corresponds to the sound-absorbing cotton 210 It is provided that at least a part of the air outlet 119 is set corresponding to the first air channel 174 .

The cup assembly 140 of the cooking machine 100 is detachably arranged on the top of the base 110, and the first opening 116 is arranged on the top of the seat body 112, which can ensure that the airflow entering the fifth air channel from the air inlet 118 can flow through the first opening 116. The motor 148 of the cup assembly 140, that is, ensures the smoothness of the air flow path.

Example 20:

As shown in FIG. 56 to FIG. 66 , on the basis of any of the above embodiments, embodiment 20 provides a cooking machine 100 including a base 110 , a cover assembly 120 and a cup assembly 140 . The cover assembly 120 is detachably connected to the base 110 , the base 110 and the cover assembly 120 enclose an accommodation chamber 130 , the cup assembly 140 is located in the accommodation chamber 130 , and the cup assembly 140 is detachably connected to the base 110 .

Further, the cover assembly 120 includes: an outer cover 122 detachably connected with the base 110, the outer cover 122 is provided with a third opening; a first sub-cover 220, detachably connected with the outer cover 122, the first sub-cover 220 is used to open Or close the third opening.

In detail, the cover assembly 120 includes: an outer cover 122, which is detachably connected to the base 110, and the outer cover 122 is provided with a third opening; a first sub-cover 220, which is detachably connected to the outer cover 122, and the first sub-cover 220 is used to open Or close the third opening.

Further, as shown in Figures 88 to 96, the first sub-cover 220 is provided with a channel 222 and a first chamber 224, the first sub-cover 220 is also provided with a first air inlet 226 and an air outlet 228, and the channel 222 communicates A first air inlet 226 and an air outlet 228; a connecting structure 230 is provided on the pipe wall of the passage 222, and the first chamber 224 communicates with the communicating structure 230; wherein, the cross-sectional area of the passage 222 is smaller than that of the first chamber 224 flow cross-sectional area.

In addition, a communication structure 230 is disposed on the pipe wall of the channel 222 , and the first chamber 224 communicates with the communication structure 230 . By rationally setting the matching structure of the passage 222 and the first chamber 224, the flow cross-sectional area of the passage 222 is smaller than the flow cross-sectional area of the first chamber 224, that is, the passage 222 and the first chamber 224 are jointly configured to resonate Cavity structure, when the sound wave reaches the resonant chamber 182, the part of the sound wave that is close to the natural frequency of the resonant cavity structure causes the resonance of the resonant cavity structure. The friction of the inner wall of the chamber 224 converts mechanical energy into heat energy, thereby consuming sound energy, which can effectively achieve the effect of sound absorption and noise reduction.

Example 21:

As shown in FIGS. 56 to 66 , on the basis of Embodiment 20, Embodiment 21 provides a cooking machine 100 including a base 110 , a cover assembly 120 and a cup assembly 140 . The cover assembly 120 is detachably connected to the base 110 , the base 110 and the cover assembly 120 enclose an accommodation chamber 130 , the cup assembly 140 is located in the accommodation chamber 130 , and the cup assembly 140 is detachably connected to the base 110 .

The cover assembly 120 includes: an outer cover 122 detachably connected with the base 110, the outer cover 122 is provided with a third opening; a first sub-cover 220, detachably connected with the outer cover 122, the first sub-cover 220 is used to open or close the second Three mouths.

Further, as shown in Figure 83, Figure 98, Figure 99, Figure 100, Figure 101 and Figure 102, the cooking machine 100 also includes: a second sub-cover 240, which is detachably connected with the first sub-cover 220, and the second sub-cover The cover 240 is used to open or close the open end of the cup assembly 140; the second sub-cover 240 is provided with a second air inlet 242, and a second chamber 244 is enclosed between the first sub-cover 220 and the second sub-cover 240; Wherein, both the flow cross-sectional area of the first air inlet 226 and the flow cross-sectional area of the second air inlet 242 are smaller than the flow cross-sectional area of the second chamber 244 .

n is a natural number.

Specifically, n includes 0, 1, 2, 3, 4, 5, etc., which are not listed here.

Further, as shown in FIG. 88 to FIG. 95, FIG. 96 and FIG. 97, the first sub-cover 220 includes: a first housing 232, the first housing 232 is provided with a first air inlet 226; a second housing 234 , is detachably connected with the first housing 232, the second housing 234 is provided with an air outlet 228, and the first housing 232 and the second housing 234 enclose the first chamber 224; wherein, the first housing 232 and the One of the second housings 234 is provided with the channel 222 . That is to say, the first housing 232 and the second housing 234 cooperate to meet the use requirements of forming the first chamber 224 while reducing the input of materials surrounding the first chamber 224, which is conducive to reducing the production cost of the product. . Since the first housing 232 and the second housing 234 are detachably connected, it is convenient to clean the inside of the first sub-cover 220 and ensure the sanitation and safety of the cover.

Wherein, one of the first housing 232 and the second housing 234 is provided with the channel 222, that is, one of the first housing 232 and the second housing 234 is used to support and fix the channel 222, so as to ensure that the channel 222 The matching structure with the first chamber 224 further ensures the effectiveness and feasibility of communication between the communication structure 230 and the first chamber 224 .

Further, as shown in FIG. 90 , the first sub-cover 220 also includes a cover plate 236 , the cover plate 236 is located on the side of the first housing 232 away from the second housing 234 , the cover plate 236 is provided with an escape space, and the air outlet 228 Corresponding setting with the avoidance space. The cover plate 236 has a decorative function to ensure the aesthetic appearance and fluency of the cover body.

Further, as shown in Fig. 88, Fig. 89, Fig. 94, Fig. 96 and Fig. 102, the other of the first shell 232 and the second shell 234 is provided with a first surround 238, and the end of the channel 222 Stretches into the first surrounding edge 238 . When the first housing 232 and the second housing 234 are mated, the end of the passage 222 extends into the first surrounding edge 238, and the first surrounding edge 238 can limit the movement of the passage 222 to ensure that the first housing 232, the second The matching structure of the housing 234 and the passage 222 can further ensure the effective cooperation between the passage 222 and the first chamber 224 . In addition, since the end of the channel 222 protrudes into the first surrounding edge 238, the sealing of the connection between the channel 222 and the surrounding plate 192 can be guaranteed to limit the flow path of the airflow, providing an effective noise reduction function for the cover. And reliable structural support.

Specifically, a first surrounding edge 238 is provided inside the second housing 234, and the first surrounding edge 238 is located on the peripheral side of the air outlet 228. The first housing 232 is provided with a passage 222, and the free end of the passage 222 can extend into the first Inside the perimeter 238.

Specifically, as shown in FIG. 89 , FIG. 91 , FIG. 92 and FIG. 95 , the fifth sealing portion 270 is used to seal the joint between the first housing 232 and the second housing 234 .

Further, as shown in FIG. 102 , the outer surface of the second sub-cover 240 is provided with a second surrounding edge 246, and the second surrounding edge 246 is located on the peripheral side of the second air inlet 242, and a part of the first sub-cover 220 protrudes into Inside the second surrounding edge 246 , a portion of the first sub-cover 220 located inside the second surrounding edge 246 is provided with a first air inlet 226 . This setting increases the mating area and mating angle of the joint between the first sub-cover 220 and the second sub-cover 240, which is beneficial to ensure the sealing of the joint between the first sub-cover 220 and the second sub-cover 240, so as to limit the air flow flow path.

Further, the part of the first sub-cover 220 located in the second surrounding edge 246 is provided with a first air inlet 226, while ensuring the tightness of the connection between the first sub-cover 220 and the second sub-cover 240, it provides the first The air inlet 226 communicates with the second air inlet 242 to provide effective structural support.

Further, the fifth sealing member is used to seal the joint between the first sub-cover 220 and the second surrounding edge 246 . This setting can prevent the airflow from leaking from the connection between the first sub-cover 220 and the second surrounding edge 246, and ensure the good sealing of the connection between the first sub-cover 220 and the second surrounding edge 246, so as to define The flow path of the airflow can ensure the effective contact between the second chamber 244 and the first chamber 224 with the sound wave, which is beneficial to improve the noise reduction effect. In addition, the fifth sealing member can also avoid the hard contact between the first sub-cover 220 and the second surrounding edge 246 , which is beneficial to reduce the noise reduction effect of further lifting the housing 172 .

Wherein, the fifth sealing member includes a sealing ring. A sealing ring is provided at the joint between the first sub-cover 220 and the second surrounding edge 246. Furthermore, the sealing ring is a rubber part.

Further, as shown in FIG. 61 , FIG. 63 , FIG. 91 , FIG. 92 and FIG. 95 , the cooking machine 100 further includes: a second sealing member 330 for sealing the outer cover 122 and the first sub-cover 220 and the connection of the second sub-cover 240.

Wherein, the cooking machine 100 also includes a second sealing member 330, by setting the second sealing member 330 at the joint between the outer cover 122 and the first sub-cover 220 and the second sub-cover 240, so as to use the second sealing member 330 to seal the outer cover 122 The connection with the first sub-cover 220 and the second sub-cover 240 .

In addition, the second sealing member 330 is located at the connection between the outer cover 122 and the first sub-cover 220 and the second sub-cover 240, which can play a role of vibration reduction, so that the outer cover 122 can avoid contact with the first sub-cover when the cooking machine 100 is working. The hard contact between the 220 and the second sub-cover 240 is conducive to further improving the noise reduction effect of the cooking machine 100 .

Specifically, the second sealing member 330 is a sealing ring. Sealing rings are provided at the connections between the outer cover 122 and the first sub-cover 220 and the second sub-cover 240 . Furthermore, the sealing ring is a rubber part.

Example 22:

As shown in FIG. 56 to FIG. 66 , on the basis of any of the above embodiments, embodiment 22 provides a cooking machine 100 including a base 110 , a cover assembly 120 and a cup assembly 140 . The cover assembly 120 is detachably connected to the base 110 , the base 110 and the cover assembly 120 enclose an accommodation chamber 130 , the cup assembly 140 is located in the accommodation chamber 130 , and the cup assembly 140 is detachably connected to the base 110 .

Further, as shown in FIG. 66 and FIG. 71 , the cooking machine 100 further includes: a shock absorber 340 located between the cup assembly 140 and the base 110 .

In detail, the cooking machine 100 also includes a shock absorber 340, which is located between the cup body assembly 140 and the base 110. This arrangement can avoid hard contact between the cup body assembly 140 and the base 110, which is beneficial to further improve cooking. Machine 100 noise reduction effect.

Specifically, the shock absorbing element is a rubber element.

Example 23:

The cooking machine 100 includes a first sub-cover 220 , a second sub-cover 240 , an outer cover 122 , a cup assembly 140 and a base 110 . Wherein, the cup assembly 140 is located inside the outer cover 122 . Wherein, the first sub-cover 220 , the outer cover 122 and the base 110 are integrated to wrap the cup assembly 140 that generates the sound source.

The air outlet 228 is located on the second housing 234 and communicates with the first air inlet 226 of the first housing 232 to form a discharge channel for the gas inside the cup body 142 . The first housing 232 and the second housing 234 are enclosed Out of the first chamber 224 , the first chamber 224 communicates with the communication structure 230 of the channel 222 . The first chamber 224 communicates with the outside world through the communication structure 230 .

The whipping noise inside the cup 142 is broadband noise. The first sub-cover 220 and the second sub-cover 240 of the present application cooperate to cancel broadband noise. Specifically, the second air inlet 242, the second chamber 244 and the first air inlet 226 cooperate to realize the first noise reduction treatment of the sound wave, and the channel 222, the communication structure 230 and the first chamber 224 cooperate In order to realize the second noise reduction processing of the sound wave. That is to say, the sound waves flow through the second sub-cover 240 and the first sub-cover 220, and the second sub-cover 240 and the first sub-cover 220 can perform multi-stage noise reduction processing on the sound waves, which is beneficial to improve the noise reduction effect of the cooking machine 100 . Wherein, the second air inlet 242 , the second chamber 244 and the first air inlet 226 cooperate to reduce broadband noise, and the channel 222 , the communication structure 230 and the first chamber 224 cooperate to achieve high noise reduction. Increase the amount of noise reduction of the stirring noise inside the cup body 142 .

Specifically, the distance between the first shell 232 and the second shell 234 of the first sub-cover 220 is greater than or equal to 8 mm, such as 9 mm, 10 mm, 10 mm, 11 mm, 12 mm, etc., which are not listed here.

Specifically, as shown in FIG. 102 , the second sub-cover 240 is further provided with a third surrounding edge 280 , and the third surrounding edge 280 has a function of stabilizing flow, so as to ensure that hot air can flow to the second air inlet 242 in an orderly manner.

A ring-shaped damping soft rubber (referred to as the first sealing member 160 ) is provided between the outer cover 122 and the base 110 , and the cutting surface is L-shaped, which can realize sealing and damping at the same time.

As shown in Figure 92 and Figure 95, there is an annular damping ring (referred to as the second seal 330) between the first sub-cover 220 and the second sub-cover 240, and its cut surface is L-shaped, which realizes two functions, one Because the first sub-cover 220 has no hard contact with the outer cover 122 and the second sub-cover 240, vibration reduction is realized, and the other is sealed so that the whipping and crushing noise in the cup body 142 can only pass through the channel 222 of the first sub-cover 220 discharge.

As shown in Figure 66, the bottom of the cup body assembly 140 is provided with a shock absorber 340, and/or as shown in Figure 71, a large shock absorber 340 is designed on the base 110 to realize the vibration between the cup body 142 and the base. Vibration-absorbing fit.

The noise reduction device 170 and the sound-absorbing cotton 210 are arranged in the base 110 . Wherein, the thickness of the sound-absorbing cotton 210 is greater than 10mm.

The noise reduction device 170 includes a plurality of noise reduction chambers and a first air duct 174 . A plurality of communication parts 176 are provided on the side wall of the first air duct 174 , and each noise reduction chamber communicates with at least one communication part 176 . The first air channel 174 has the function of passing through the medium.

The noise reduction device 170 includes a multi-layer shell body 186 , and a plurality of noise reduction cavities are arranged between two adjacent shell bodies 186 .

In this application, the term "plurality" means two or more, unless otherwise clearly defined. The terms "installation", "connection", "connection", "fixed" and other terms should be interpreted in a broad sense, for example, "connection" can be fixed connection, detachable connection, or integral connection; "connection" can be directly or indirectly through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations. In the description of this specification, descriptions of the terms "one embodiment", "some embodiments", "specific embodiments" and the like mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in this application In at least one embodiment or example of . In this specification, schematic representations 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 any one or more embodiments or examples.

The above descriptions are only preferred embodiments of the present application, and are not intended to limit the present application. For those skilled in the art, there may be various modifications and changes in the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included within the protection scope of this application.

Claims

A noise reduction device for a cooking machine, including:

A housing, the housing is provided with a plurality of noise reduction cavities, and the housing is also provided with a first air duct, the side wall of the first air duct is provided with a plurality of communicating parts, each of the noise reduction The cavity communicates with at least one of the communicating portions.
The noise reduction device according to claim 1, wherein the plurality of noise reduction cavities are located on the peripheral side of the first air duct.
The noise reduction device according to claim 1 or 2, wherein the plurality of noise reduction chambers include a first noise reduction chamber, the first noise reduction chamber includes a resonance pipe and a resonance chamber, and the resonance pipe communicates with all the resonance chamber and the communicating portion;

Wherein, the flow cross-sectional area of the resonance pipe is smaller than the flow cross-sectional area of the resonance chamber;

The flow cross-sectional area S1 of the resonance pipe, the volume V1 of the resonance chamber, the length L1 of the resonance pipe, the sound velocity c1 and the target noise reduction frequency f1 of the cooking machine satisfy:
L1≥2mm.
The noise reduction device according to claim 1 or 2, wherein the plurality of noise reduction cavities include a second noise reduction cavity, the second noise reduction cavity is a wavelength tube, and the wavelength tube communicates with the communication part ;

The speed of sound c2, the length L2 of the wavelength tube and the target noise reduction frequency f2 of the cooking machine satisfy:
The noise reduction device according to claim 1 or 2, wherein the target noise reduction frequencies corresponding to any two noise reduction cavities in the plurality of noise reduction cavities are different.
The noise reduction device according to claim 1 or 2, wherein the housing comprises a multi-layer housing body, the first air duct comprises a plurality of sub-air ducts, and one sub-air duct is provided on each layer of the housing body. air duct;

A plurality of the noise reduction cavities are enclosed between any two adjacent layers of the shell bodies.
The noise reduction device according to claim 6, wherein the housing body comprises:

A partition, the partition is provided with a through hole, and the sub-air channel is located on the peripheral side of the through hole;

The shroud is arranged on the partition, and in any two adjacent shell bodies, the shroud of one shell body abuts against the partition of the other shell body, and the partition The plurality of noise reduction cavities are enclosed between the board and the surrounding board.
The noise reduction device according to claim 7, wherein, in any two adjacent layers of the shell bodies, the surrounding plates of one shell body are alternately arranged with the surrounding plates of the other shell body; and / or

The noise reduction device further includes a seal, which is used to seal any joint between two adjacent shell bodies.
The noise reducing device according to claim 7, wherein the partition is provided with slots, and in any two adjacent layers of the shell bodies, the surrounding plate of one shell body is inserted into the other shell in the slot of the body.
The noise reducing device according to claim 6, wherein the outermost two-layer shell bodies in the multi-layer shell bodies are referred to as the first shell body and the second shell body, and the first shell body and the At least one of the second shell bodies is provided with a guide column, and the shell body located between the first shell body and the second shell body is provided with a guide hole, and the guide column can be inserted into the guide hole .
The noise reduction device according to claim 1 or 2, wherein, the outer surface of the housing is provided with a water receiving tank and a water leakage hole, and the water receiving tank is connected to the water leakage hole;

Wherein, the noise reduction cavity is located on one side of the leakage hole;

An air guiding groove is provided on the side of the housing away from the water receiving groove.
A base for a cooking machine, comprising:

A noise reduction device as claimed in any one of claims 1 to 11.
The base of claim 12, further comprising:

The seat body, the seat body is provided with a second air duct, the seat body is also provided with an air inlet and an air outlet, the second air duct communicates with the air inlet and the air outlet, and the noise reduction device located within said second air duct;

The sound-absorbing cotton is located in the second air duct, and the sound-absorbing cotton is located on the peripheral side of the noise reducing device.
The base according to claim 13, wherein a first opening is provided on the top of the base body, the first opening communicates with the second air channel, and the first opening is used to communicate with the cooking machine The cup components are connected;

The bottom of the seat body is provided with the air inlet and the air outlet, at least a part of the air inlet is arranged corresponding to the sound-absorbing cotton, and at least a part of the air outlet is arranged corresponding to the first air duct.
A cooking machine, comprising:

A base as claimed in any one of claims 12 to 14.
The cooking machine according to claim 15, further comprising:

The cup assembly is detachably connected to the base.
The cooking machine according to claim 16, wherein the cup assembly comprises:

Cup body;

a crushing knife located in the cup;

a seat body connected to the cup body, the seat body is provided with a second opening;

The motor is located in the seat, the motor includes a drive shaft, and the first end of the drive shaft extends into the cup and is connected with the pulverizer;

a fan blade located in the seat, the second end of the drive shaft is connected to the fan blade;

Wherein, the first opening of the base communicates with the second opening.
A cover for a cooking machine, including:

The cover body, the cover body is provided with a passage and a first chamber, the cover body is also provided with a first air inlet and an air outlet, and the passage communicates with the first air inlet and the air outlet, so A communication structure is provided on the pipe wall of the channel, and the first chamber communicates with the communication structure;

Wherein, the flow cross-sectional area of the channel is smaller than the flow cross-sectional area of the first chamber.
The cover according to claim 18, wherein the flow cross-sectional area S1 of the communication structure, the volume V1 of the first chamber, the length L1 of the channel, the sound velocity c1 and the target drop of the cooking machine The noise frequency f1 satisfies:
The cover according to claim 18 or 19, wherein there are multiple first chambers, and the plurality of first chambers are arranged at intervals along the circumference of the channel.
The cover according to claim 20, wherein the number of the communication structures is plural, and each of the first chambers communicates with at least one of the communication structures.
The cover according to claim 20, wherein there are multiple channels, and each of the first chambers communicates with at least one communication structure of the channel.
The cover according to claim 18 or 19, wherein a second chamber is further provided in the cover body, and a second air inlet is provided in the cover body, and the first air inlet is located at the between the second air inlet and the air outlet, and the second chamber communicates with the first air inlet and the second air inlet;

Wherein, both the flow cross-sectional area of the first air inlet and the flow cross-sectional area of the second air inlet are smaller than the flow cross-sectional area of the second chamber;

The size L2 of the second chamber in the thickness direction of the cover, the sound velocity c2 and the target noise reduction frequency f2 of the cooking machine satisfy:
n is a natural number.
The cover of claim 23, wherein the cover body comprises:

a first sub-cover, the first sub-cover is provided with the channel, the first chamber, the first air inlet and the air outlet;

The second sub-cover is detachably connected with the first sub-cover, the second sub-cover is provided with the second air inlet, and the first sub-cover and the second sub-cover enclose a the second chamber.
The cover according to claim 24, wherein the first sub-cover comprises:

a first housing, the first housing is provided with the first air inlet;

The second housing is detachably connected with the first housing, the second housing is provided with the air outlet, and the first housing and the second housing enclose the first chamber room;

Wherein, one of the first housing and the second housing is provided with the channel.
The cover according to claim 25, wherein at least a part of the first air inlet is arranged corresponding to the air outlet; and/or

The communication structure includes at least one of a communication hole and a communication groove.
The cover body according to claim 25, wherein the first sub-cover further comprises a cover plate, the cover plate is located on the side of the first shell away from the second shell, and the cover plate is set There is an avoidance space, and the air outlet is set correspondingly to the avoidance space;

The other of the first housing and the second housing is provided with a first surround, and the end of the channel extends into the first surround;

The outer surface of the second sub-cover is provided with a second surrounding edge, the second surrounding edge is located at the periphery of the second air inlet, and a part of the first sub-cover extends into the second surrounding edge Inside, the part of the first sub-cover located inside the second surround is provided with the first air inlet.
The cover according to claim 27, further comprising:

The second sealing part, the second sealing part is used to seal the joint between the first sub-cover and the second surrounding edge, the joint between the first shell and the second shell, the The connection between the first surrounding edge and the channel.
A cooking machine, comprising:

A cover as claimed in any one of claims 18 to 28.
The cooking machine according to claim 29, further comprising:

base;

The outer cover is detachably connected with the base, the outer cover is provided with a third opening, the first sub-cover of the cover is detachably connected with the outer cover, and the first sub-cover is used to open or close the The third opening, the base, the outer cover and the first sub-cover enclose an accommodating cavity;

The cup body assembly is located in the accommodating cavity, the cup body assembly is detachably connected to the base, the second sub-cover of the cover is detachably connected to the cup body assembly, and the second sub-cap is detachably connected to the cup body assembly. The lid is used to open or close the open end of the cup assembly.
A cooking machine, comprising:

base;

The cover assembly is detachably connected to the base, and an accommodating cavity is enclosed between the base and the cover assembly;

The cup body assembly is located in the accommodating cavity, and the cup body assembly is detachably connected with the base.
The cooking machine according to claim 31, wherein there is a gap between the cup assembly and a cavity wall of the accommodating cavity.
The cooking machine according to claim 31 or 32, further comprising:

a first seal, the first seal is used to seal the connection between the cover assembly and the base;

The side wall of the cover assembly is provided with a first notch, and the side wall of the base is provided with a second notch;

The first seal includes a first seal portion and a second seal portion;

A part of the first sealing part is located at the first notch, and another part of the first sealing part is located at the second notch;

Along the height direction of the cup body assembly, the second sealing part is located between the cover body assembly and the base.
The cooking machine according to claim 31 or 32, wherein the cup assembly comprises:

Cup body;

a crushing knife located in the cup;

a seat body connected to the cup body, and the seat body is detachably connected to the base;

The motor is located in the seat, the motor includes a drive shaft, and the first end of the drive shaft extends into the cup and is connected with the pulverizer;

The fan blade is located in the seat, and the second end of the drive shaft is connected to the fan blade.
The food processor of claim 34, wherein the base comprises:

The seat body, the seat body is provided with a fifth air passage, a first opening, an air inlet and an air outlet, and the air inlet, the air outlet and the first opening are all connected to the fifth air passage, so The seat body is provided with a second opening, and the first opening communicates with the second opening;

The noise reduction device is located in the fifth air duct.
The cooking machine according to claim 35, wherein the noise reduction device comprises:

A housing, the housing is provided with a plurality of noise reduction cavities, and the housing is also provided with a first air duct, the side wall of the first air duct is provided with a plurality of communicating parts, each of the noise reduction the cavity is in communication with at least one of the communication parts;

Wherein, the first air passage communicates with the fifth air passage.
The cooking machine according to claim 36, wherein the plurality of noise reduction chambers include a first noise reduction chamber, the first noise reduction chamber includes a resonance pipe and a resonance chamber, and the resonance pipe communicates with the resonance chamber the chamber and the connecting portion;

Wherein, the flow cross-sectional area of the resonance pipe is smaller than the flow cross-sectional area of the resonance chamber;

The multiple noise reduction cavities include a second noise reduction cavity, the second noise reduction cavity is a wavelength tube, and the wavelength tube communicates with the communication part.
The cooking machine of claim 36, wherein the base further comprises:

The sound-absorbing cotton is located in the fifth air duct, and the sound-absorbing cotton is located on the peripheral side of the noise reduction device;

The top of the seat body is provided with the first opening, the bottom of the seat body is provided with the air inlet and the air outlet, at least a part of the air inlet is arranged corresponding to the sound-absorbing cotton, and the outlet At least a part of the tuyere is set corresponding to the first air duct.
The cooking machine according to claim 31 or 32, wherein the cover assembly comprises:

The outer cover is detachably connected to the base, and the outer cover is provided with a third opening;

A first sub-cover is detachably connected to the outer cover, and the first sub-cover is used to open or close the third opening;

The first sub-cover is provided with a channel and a first chamber, the first sub-cover is also provided with a first air inlet and an air outlet, and the channel communicates with the first air inlet and the air outlet;

A communication structure is provided on the pipe wall of the channel, and the first chamber communicates with the communication structure;

Wherein, the flow cross-sectional area of the channel is smaller than the flow cross-sectional area of the first chamber.
The cooking machine according to claim 39, wherein there are multiple first chambers, and the plurality of first chambers are arranged at intervals along the circumference of the channel;

The second sub-cover is detachably connected with the first sub-cover, and the second sub-cover is used to open or close the open end of the cup body assembly;

The second sub-cover is provided with a second air inlet, and a second chamber is enclosed between the first sub-cover and the second sub-cover;

Wherein, both the flow cross-sectional area of the first air inlet and the flow cross-sectional area of the second air inlet are smaller than the flow cross-sectional area of the second chamber

A second sealing element, the second sealing element is used to seal the connection between the outer cover and the first sub-cover and the second sub-cover.
The cooking machine according to claim 31 or 32, further comprising:

The shock absorber is located between the cup assembly and the base.