WO2020192583A1

WO2020192583A1 - A bowl cover, a bowl, and a food processor

Info

Publication number: WO2020192583A1
Application number: PCT/CN2020/080418
Authority: WO
Inventors: Junchen Liu
Original assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co., Ltd.
Priority date: 2019-03-28
Filing date: 2020-03-20
Publication date: 2020-10-01
Also published as: CN209883930U; EP3945965A4; EP3945965A1; KR20210143279A

Abstract

A bowl cover, a bowl, and a food processor. The bowl cover comprises a cover body assembly (10) and a suction device (20) detachably mounted to the cover body assembly (10). The cover body assembly (10) comprises a suction hole (111) opening to its side facing the bowl body when the bowl cover is mounted to the bowl body. The suction device (20) comprises a housing (21) and a suction module (23) arranged inside the housing (21) and being in communication with the suction hole (111). The cover body assembly (10) is provided with a first coil (12). The suction device (20) is correspondingly provided with a second coil (22). The first coil (12) and the second coil (22) are connected by electromagnetic induction. The second coil (22) is electrically connected with the suction module (23). An induced potential is created between the first coil (12) and the second coil (22), so that the second coil (22) can supply electrical energy for the functioning of the suction module (23), with high energy transmission efficiency.

Description

A Bowl cover, a Bowl, and a Food Processor

Field of the Invention

The invention relates to the technical field of food processing devices, and relates in particular to a bowl cover, a bowl, and a food processor.

Background of the Invention

A food processor comprises a main unit and a bowl fitted to the main unit. The bowl is provided with a bowl body assembly and a bowl cover that covers an opening of the bowl body assembly so that the cavity inside the bowl body assembly forms an enclosed space. In related technologies, the bowl cover comprises a cover body assembly and a pressure release assembly and a suction device mounted on the cover body assembly. The suction device is used for sucking out the air from the enclosed space, so as to obtain a state similar to vacuum or with low pressure.

In the food processor, the suction device is arranged inside the cover body assembly. Specifically, a hollow mounting space is formed inside the cover body assembly. The suction device is mounted inside the cover body assembly and is powered through the bowl body assembly. However, the suction device has a large overall volume. Correspondingly, the cover body assembly has a large overall volume, and is not good-looking.

Alternatively, the suction device is placed outside the cover body assembly. Specifically, the suction device is detachably fitted to a surface of the cover body assembly, and is powered by an energy storing element such as a battery. The energy storing element needs to be replaced or repeatedly charged, which provides poor user experience.

Summary of the Invention

In view of this, the invention proposes a bowl cover, a bowl and a food processor.

Specifically, the invention is realized by the following technical solutions:

A first aspect of the invention provides a bowl cover comprising a cover body assembly and a suction device detachably mounted to the cover body assembly. The cover body assembly comprises a suction hole opening to its side facing the bowl body when the bowl cover is mounted to the bowl body. The suction device comprises a housing and a suction module arranged inside the housing and being in communication with the suction hole. The cover body assembly is provided with a first coil. The suction device is correspondingly provided with a second coil. The first coil and the second coil are connected by electromagnetic induction. The second coil is electrically connected with the suction module. In other words, the suction module is powered by the second coil.

Optionally, the cover body assembly comprises a cover housing provided with a suction hole. The first coil is arranged inside the cover housing. The suction device is tight fitted to the cover housing and the suction module is in communication with the suction hole. The first coil is provided inside the cover housing, and thus well hidden. The suction device is sealed to the cover housing, and ensures good suction results.

Optionally, the bowl body assembly further comprises a check valve that is capable of sliding in the cover housing and initially closing the suction hole. The check valve is moved when the pressure difference between the suction hole and the suction module reaches a preset threshold. The check valve can thus open or close the suction hole by means of a pressure difference created during the functioning of the suction module, without the need of an externally provided control assembly, thereby facilitating the functioning.

Optionally, the cover housing comprises a stopping part protruding from the hole wall of the suction hole, a sliding hole that traverses the stopping part, and at least one air vent. The check valve is capable of sliding in the sliding hole and closing the at least one air vent when it abuts against the stopping part.

Optionally, the second coil is connected with the first coil in wireless communication for signal transmission between the coils. The first coil provides electrical power to the second coil and is also capable of sending a communication signal to the second coil, so as to control the functioning of the suction device, thereby facilitating the utilization.

Optionally, the suction device is detachably connected with the cover body assembly, and at least part of the contact face between the suction device and the cover body assembly is sealed. The suction device is sealed to the cover housing, facilitating the fitting and having good sealing results.

Optionally, the housing comprises a lower lid and an upper lid that envelops the lower lid. The second coil is fixed to the lower lid. The lower lid is provided with a mounting hole which is in communication with the suction hole. The suction module communicates with the mounting hole. The suction module is for example mounted to the upper lid and/or the lower lid. The mounting of the suction module inside the housing is flexible and facilitated. The second coil is fixed to the lower lid, close to the cover body assembly, having good electromagnetic induction results.

Optionally, the suction device further comprises a connecting member fitted to the housing. The connecting member is connected to a surface of the cover body assembly by suction. The connecting member is connected with the cover body assembly by suction, facilitating the mounting and having good sealing. Preferably, the connecting member comprises a through hole which is in communication with the suction hole. Thus the connecting member may surround the communicating holes so as to perform a good sealing for the suction module.

A second aspect of the invention provides a bowl comprising a bowl body assembly and a bowl cover assembly as described above. As the bowl cover assembly covers the bowl body assembly, the first coil is electrically connected with the bowl body assembly.

A third aspect of the invention provides a food processor, comprising a main unit and a bowl as described above. The bowl is mounted to the main unit. The main unit is electrically connected with the first coil.

The technical solutions provided by the embodiments of the invention can achieve the following beneficial results:

An induced potential is created between the first coil and the second coil, so that the second coil can supply electrical energy for the functioning of the suction module, with high energy transmission efficiency. The suction device is separated from the cover body assembly, and the electrical energy is supplied by means of the principle of electromagnetic induction. The overall structure of the cover body assembly has a small size and good aesthetics. The suction device is detachably connected to the cover body assembly, facilitating the utilization and providing a good user experience.

Description of the Drawings

Figure 1 is an assembled structural schematic view of the bowl cover of an exemplary embodiment of the invention;

Figure 2 is an exploded structural schematic view of the bowl cover of an exemplary embodiment of the invention;

Figure 3 is an exploded structural schematic view of the cover body assembly of an exemplary embodiment of the invention;

Figure 4 is an exploded structural schematic view of the suction device of an exemplary embodiment of the invention;

Figure 5 is a sectional structural schematic view of the bowl of an exemplary embodiment of the invention;

Figure 6 is an enlarged structural schematic view of the detail A in Figure 5;

Figure 7 is an assembling structural schematic view of the bowl of an exemplary embodiment of the invention;

Figure 8 is a structural schematic view of the food processor of an exemplary embodiment of the invention.

In the figures: cover body assembly 10; cover housing 11; suction hole 111; upper bowl cover 112; lower bowl cover 113; stopping part 114; sliding hole 115; air vent 116; sealing plane 117; first coil 12; check valve 13; sealing part 131; guiding pin 132; pressure release module 14; sealing frame 15; air guiding hole 151; suction device 20; housing 21; upper lid 211; lower lid 212; mounting hole 213; button 214; second coil 22;suction module 23; suction pump 231; circuit board assembly 232; connecting member 24; through hole 241; bowl body assembly 30; mixing bowl 31; mixing blade 32;coupler 33; main unit 40.

Detailed Description of the Invention

Exemplary embodiments, which are illustrated in the accompanying drawings, will be described in detail here. In the description below related to figures, unless otherwise indicated, the same numbers in different figures refer to the same or similar elements. The modes of realization described in the following exemplary embodiments do not represent all modes of realization in accordance with the invention. Instead, they are merely examples of devices in accordance with some aspects of the invention described in detail in the appended claims.

The terms used in the application are merely for the purpose of describing specific embodiments, and not intended to be limiting. Singular forms, “one” and “the, ” used in the description and the appended claims of the application are also intended to include the plural form, unless the context clearly indicates otherwise. It should also be understood that the term “and/or” used herein means and includes any and all possible combinations of one or more of the associated listed items.

It should be understood that, although the application may use terms such as “first, ” “second, ” and “third” to describe various items of information, those items of information are not limited to those terms. Those terms are merely used to distinguish information of the same type. For example, without departing from the scope of the invention, a first item of information can also be referred to as a second item of information. Similarly, a second item of information can also be referred to as a third item of information. Depending on the context, such as terms used therein, “if” can be construed as “when ... ” or “in the event that ... ” or “in response to the determination that .... ”

As shown in Figure 1 to Figure 4, in one embodiment, a bowl cover comprises a cover body assembly 10 and a suction device 20 detachably mounted to the cover body assembly. The suction device 20 comprises a housing 21 and a suction module 23 fitted inside the housing 21. The cover body assembly 10 is provided with a first coil 12. The suction device 20 is correspondingly provided with a second coil 22. The first coil 12 is connected with the second coil 22 by electromagnetic induction. The second coil 22 is electrically connected with the suction module 23.

The cover body assembly 10 and the suction device 20 are provided as two distinct parts, wherein, the cover body assembly 10 can cover an opening of the container only by itself. The cover body assembly 10 is provided with the first coil 12. The first coil 12 is of a coil structure. Correspondingly, the suction device 20 is provided with the second coil 22 corresponding to the first coil 12. The second coil 22 is of a coil structure. When the first coil 12 is powered, a current runs along the first coil 12. Correspondingly, an induced potential and an induced current are created inside the second coil 22, so that the suction device 20 is driven by the induced potential and the induced current to work.

A wireless electric energy transmission is achieved via the second coil 22 and the first coil 12 by the principle of electromagnetic induction. The suction module 23 is driven by the second coil 22, facilitating the mounting and dismounting of the cover body assembly 10 and the suction device 20. The second coil 22 is provided inside the housing 21 and the first coil 12 is provided in the cover body assembly 10, allowing the housing 21 and the cover body assembly 10 to keep a smooth external surface, a flexible design of external form, and good aesthetics. The cover body assembly 10 and the suction device 20 are separated and the electric energy transmission is achieved by the principle of electromagnetic induction. The overall structure of the cover body assembly 10 has a small size and good aesthetics.

In one embodiment, the cover body assembly 10 comprises a cover housing 11 provided with a suction hole 111. The first coil 12 is fitted inside the cover housing 11. The suction device 20 is tight fitted to the cover housing 11, with the suction module 23 being in communication with the suction hole 111.

The suction device 20 is fitted to the cover housing 11 and is provided to envelop the suction hole 111. The suction module 23 is in communication with the suction hole 111. The suction device 20 is connected to the cover body assembly 10 by fitting. The suction device 20 is provided inside the housing 21 and can suck out air at the suction hole 111 of the cover body assembly 10, convenient to use and providing a good user experience. The first coil 12 is in electromagnetic induction with the second coil 22, and provides electric energy to the suction module 23, achieving wireless powering. The first coil 12 is provided inside the cover housing 11. The second coil 22 is provided inside the housing 21. Correspondingly, the cover housing 11 and the housing 21 have a smooth external aspect and provide good aesthetics, and can improve the tightness of sealing.

As shown in Figure 3, in one embodiment, the cover body assembly 10 further comprises a check valve 13 mounted slidable in the cover housing 11, which initially closes the suction hole 111. The check valve 13 is moved when the pressure difference between the suction hole 111 and the suction module 23 reaches a preset threshold.

The suction hole 111 traverses the cover housing 11, or the suction hole 111 is connected with a hole that traverses the cover housing 11, so as to permit air on the other side of the cover housing 11 to be sucked out through the suction hole 111. In an initial state when the suction has not been executed, the check valve 13 closes the suction hole 111, so as to place the cover body assembly 10 in a closed state. When the cover body assembly 10 closes the opening of the container, the container is in a closed state.

The suction device 20 is fitted to the cover body assembly 10. The suction module 23 is in communication with the suction hole 111. When the suction module 23 is driven to work by the electric energy of the second coil 22, the air pressure on a first side of the check valve 13 decreases, while the air pressure on a second side remains unchanged. When the pressure difference between the air pressure on the second side of the check valve 13 and the air pressure on the first side is greater than the gravity of the check valve 13 and/or an elastic force applied to check valve 13, the check valve 13 is moved to put the spaces on both sides of the check valve 13 in communication, providing good suction results.

When the suction module 23 is not in a suction state, the check valve 13 automatically returns to its position. For example, the check valve 13 returns to its position by sliding under the effect of its own gravity, or the check valve 13 returns to its position by sliding under the effect of an elastic force, so that the check valve 13 closes the suction hole 111, and thus places the container in a low pressure or normal pressure state.

In one embodiment, the cover housing 11 comprises a stopping part 114 that protrudes from the hole wall of the suction hole 111, a sliding hole 115 that traverses the stopping part 114, and at least an air vent 116. The check valve 13 is provided to slide in the sliding hole 115 and closes the at least air vent 115 when it abuts against the stopping part 114.

The stopping part 114 protrudes from the hole wall of the suction hole 111. The check valve 13 is configured to slide in the sliding hole 115. Optionally, the check valve 13 is provided with a sealing part 131 and a guiding pin 132 protruding from the sealing part 131. The guiding pin 132 is inserted into the sliding hole 115, so as to guide the check valve 13 to slide along the sliding hole 115. The sealing part 131 may abut against the stopping part 114 and close the air vent 116, so that the check valve 13 can block the air flow in one direction. The outer diameter of the sealing part 131 is smaller than the inner diameter of the suction hole 111. When the check valve 13 is in an open state, air can flow through the gap between the sealing part 131 and the suction hole 111. Optionally, the suction hole 111 and the stopping part 114 constitute a counter bore structure.

As shown in Figure 2 and Figure 3, the cover housing 11 comprises a lower bowl cover 113 and an upper bowl cover 112 that covers the lower bowl cover 113. The suction hole 111 traverses both the upper bowl cover 112 and the lower bowl cover 113. In an optional embodiment, the suction hole 111 is of a counter bore structure and opens on the upper bowl cover 112. The cover body assembly 10 further comprises a sealing frame 15 mounted between the upper bowl cover 112 and the lower bowl cover 113. The sealing frame 15 is provided with an air guiding hole 151, of which one end is in communication with the air vent 116, and another end is in communication with a venting hole of the lower bowl cover 113. When the cover body assembly 10 covers the container, the venting hole is in communication with a receiving space of the container. When the suction module 23 is in a suction state, air inside the receiving space flows sequentially along the venting hole, the air guiding hole 151, the air vent 116, and the suction hole 111, in a smooth manner.

When the container is in a low pressure state, the check valve 13 can keep closing the venting hole, thus ensuring a good overall sealing. When the suction device 20 is detached, the container can still maintain a sealing state, providing good sealing results.

In one embodiment, the cover body assembly 10 further comprises a pressure release module 14 mounted to the cover housing 11 for guiding or blocking the flow of air between the two sides of the cover housing 11. When the suction device 20 has sucked out air inside the container, the container is in a low pressure state. A user may operate the pressure release module 14, so that air outside the cover body assembly 10 flows along a passage opened by the pressure release module 14.

In one embodiment, the first coil 12 surrounds the suction hole 111, and the second coil 22 faces directly the first coil 12. The cover body assembly 10 is a member of a thin-wall structure. A tube-shaped structure is formed on the upper bowl cover 112 at the location of the suction hole 111. The first coil 12 surrounds the suction hole 111, and directly faces the second coil 22, so as to enlarge the area of induction between the first coil 12 and the second coil 22, to increase the stability of the induced potential of the second coil 22.

Optionally, the second coil 22 and the first coil 12 are both of a flat coil-shaped structure, and are parallel to each other, providing a large inducible area and good stability of electromagnetic induction. Optionally, the sealing frame 15 is sleeved to the outside of the hole wall of the suction hole 111. The first coil 12 is sleeved to the outside of the sealing frame 15, and is close to an upper region of the upper bowl cover 112.

Optionally, the second coil 22 and the first coil 12 are connected in wireless communication. The second coil 22 and the first coil 12 are both of a coil structure. They can transmit corresponding control signals by means of coil properties, so as to achieve wireless signal transmission between them.

As shown in Figure 2 and Figure 4, in one embodiment, the suction device 20 is detachably connected with the cover body assembly 10, and at least part of the contact face between the suction device 20 and the cover body assembly 10 is sealed. The suction device 20 can be fitted to the cover housing 11 by a detachable connection such as snap-fit connection, screw connection, plug, suction connection by a suction cup, and locking connection by fasteners, wherein, the contacting part between the suction device 20 and the cover housing 11 is at least partially sealed. For example, the contact face between the suction device 20 and the cover housing 11 is provided with a sealing plane 117 surrounding the suction hole 111. The sealing plane 117 can be formed by a surface of the suction device 20 tightly abutting against the cover housing 11, or can also be formed by providing a sealing ring to create an elastic sealing between the suction device 20 and the cover housing 11.

In an optional embodiment, the housing 21 comprises a lower lid 212 and an upper lid 211 that envelops the lower lid 212. The second coil 22 is fixed to the lower lid 212. The lower lid 212 is provided with a mounting hole 213. The suction module 23 is mounted to the upper lid 211 and/or the lower lid 212 and communicates with the mounting hole 213.

The housing 21 is of a thin-wall structure. The suction module 23 and the second coil 22 are received inside the housing 21. The lower lid 212 is detachably connected with the upper lid 211, facilitating the fitting of the second coil 22 and the suction module 23. The lower lid 212 is provided with the mounting hole 213. When the suction device 20 is mounted to the cover body assembly 10, the mounting hole 213 is in communication with the suction hole 111, so that the suction module 23 can suck out air inside the suction hole 111 from the mounting hole 213 or through the mounting hole 213. The suction module 23 is detachably mounted to the upper lid 211 and/or the lower lid 212, facilitating the fitting of the suction module 23. Optionally, the second coil 22 is fitted to the lower lid 212 and surrounds the mounting hole 213.

As shown in Figure 4 and Figure 6, in one embodiment, the suction device 20 further comprises a connecting member 24 fitted to the housing 21. The connecting member 24 is connected to a surface of the cover body assembly 10 by suction. Optionally, the connecting member 24 envelops the suction hole 111 and the suction hole 111 is located in a region surrounded by the sealed contact face between the connecting member 24 and the surface of the cover body assembly 10. The connecting member 24 is fitted to the housing 21, and the suction module 23 communicates with the cover body assembly 10 through the connecting member 24. In fact, the connecting member 24 is provided with a through hole 241 that communicates with the suction hole 111 when the connecting member 24 is sucked to the cover housing 11.

In an optional embodiment, the connecting member 24 is of a suction cup structure and made of an elastic material. A small opening at its one end is fixed to the lower lid 212, and another end is capable of being sucked against the cover housing 11 under an external press force and connected with a contact face of the cover housing 11 in a sealed manner. Correspondingly, the upper surface of the upper bowl cover 112 is provided with a sealing plane 117 in which an opening of the suction hole 111 is located. The connecting member 24 is sucked against the sealing plane 117, so that the suction hole 111 and the through hole 241 are in communication.

The connecting member 24 is connected with the cover body assembly 10 by suction, facilitating the mounting and dismounting of the suction device 20 to and from the cover body assembly 10. The connecting member 24 is tightly connected with the surface of the cover body assembly 10 by suction. The cover body assembly 10 is only provided with a sealing plane 117 that is connected with the connecting member 24 by suction, thus providing good aesthetics. When the suction device 20 completes a suction step, it is convenient to detach the connecting member 24 from the cover body assembly 10.

In an embodiment, the suction model 23 comprises a suction pump 231 and a circuit board assembly 232 mounted to the suction pump 231. The suction pump 231 is mounted to the upper lid 211 or the lower lid 212. The circuit board assembly 232 is mounted to the upper lid 211. Optionally, the circuit board assembly 232 is provided with a control key, and the upper lid 211 is provided with a corresponding button 214. The suction module 23 controls the on/off of the suction function by means of the control key.

As shown in Figure 5 and Figure 7, the bowl cover provided by the above-described embodiments is applied to a bowl, so that the bowl achieves automatic pressure release and pressure maintenance. In addition, the suction device 20 can be readily removed after completing the suction function, facilitating the utilization. In one embodiment, the bowl comprises a bowl body assembly 30 and a bowl cover provided by the above-described embodiments. The bowl cover is provided to cover the bowl body assembly 30. The first coil 12 is electrically connected with the bowl body assembly 30.

The bowl body assembly 30 has a receiving space to form a container. The bowl cover is provided to cover the opening of the bowl body assembly 30, so that the bowl body assembly 30 can only communicate with external air through the suction hole 111. When the suction device 20 is fitted to the cover body assembly 10 and closes the suction hole 111, the receiving space of the bowl body assembly 30 is in a sealed state. When the suction module 23 is activated, air inside the bowl body assembly 30 can be sucked out through the suction hole 111, so as to place the bowl body assembly 30 in a low pressure state or vacuum state.

In an optional embodiment, the bowl body assembly 30 is provided with a power source module. As the bowl cover covers the bowl body assembly 30, the power source module is in communication with the first coil 12 in the cover body assembly 10, so that the first coil 12 can be connected with the second coil 22 by induction. Optionally, the bowl body assembly 30 and the cover body assembly 10 are respectively provided with paired couplers 33. When the cover body assembly 10 covers the bowl body assembly 30, electric energy and signals are transmitted between them through the couplers 33.

As shown in Figure 5 and Figure 8, in one embodiment, the above-described bowl is provided to a food processor. The food processor comprises a main unit 40 and a bowl provided by the above-described embodiments. The bowl is fitted to the main unit 40. The main unit 40 is electrically connected with the first coil 12.

In one embodiment, the main unit 40 comprises a base, a driving assembly mounted to the base, and a control module provided inside the base, the driving assembly being electrically connected with the control module. The control module controls the driving assembly to run in accordance with an embedded program, so that the food processor executes a corresponding food processing function.

In an optional embodiment, the first coil 12 is electrically connected with the control module. The bowl is provided with an upper plug terminal. The first coil 12 of the bowl cover is electrically connected to the upper plug terminal. The main unit 40 further comprises a lower plug terminal mounted to the base, the control module or the power source being electrically connected with the lower plug terminal. When the bowl is fitted to the base, the upper plug terminal and the lower plug terminal are plugged, so that the first coil 12 is electrically connected with the main unit 40.

The main unit 40 is drivingly connected with the bowl. Optionally, the bowl body assembly 30 comprises a mixing bowl 31, a blade base mounted to the mixing bowl 31, and a mixing blade 32 mounted to the blade base. When the bowl is fitted to the main unit 40, the mixing blade 32 is drivingly connected with the main unit 40. A receiving space receiving food materials is defined inside the mixing bowl 31. The mixing blade 32 is driven by the driving assembly to rotate so as to process food materials inside the mixing bowl 31. The driving assembly can be an electric motor assembly. Optionally, the driving assembly is directly fitted to another end of the mixing blade 32, so as to drive the mixing blade 32 to rotate and process food materials in the mixing bowl 31. Optionally, the driving assembly is plugged to the mixing blade 32 by means of a coupler, so as to drive the mixing blade 32 to rotate and process food materials in the bowl body assembly 30.

Optionally, the bottom of the bowl body assembly 30 is provided with a heating member electrically connected with the control module which controls the heating member to heat up and provides electrical energy to the heating member.

What have been described above are merely preferred embodiments of the invention, and not for the purpose of limiting the invention. When there is no conflict, the above-described embodiments can be combined with each other. Any modification, equivalent replacement or improvement made within the spirit and principles of the invention falls within the scope of protection of the invention.

Claims

A bowl cover, comprising a cover body assembly (10) and a suction device (20) detachably mounted to the cover body assembly (10) , the cover body assembly (10) comprising a suction hole (111) opening to its side facing the bowl body when the bowl cover is mounted to the bowl body, the suction device (20) comprising a housing (21) and a suction module (23) arranged inside the housing (21) and being in communication with the suction hole (111) , characterized in that: the cover body assembly (10) is provided with a first coil (12) , and the suction device (20) is correspondingly provided with a second coil (22) , the first coil (12) and the second coil (22) being connected by electromagnetic induction, the second coil (22) being electrically connected with the suction module (23) .
The bowl cover of claim 1, characterized in that, the cover body assembly (10) comprises a cover housing (11) provided with a suction hole (111) , the first coil (12) being arranged inside the cover housing (11) , the suction device (20) being tight fitted to the cover housing (11) .
The bowl cover of claim 2, characterized in that, the bowl body assembly (10) further comprises a check valve (13) capable of sliding in the cover housing (11) and initially closing the suction hole (111) , the check valve (13) is moved when the pressure difference between the suction hole (111) and the suction module (23) reaches a preset threshold.
The bowl cover of claim 3, characterized in that, the cover housing (11) comprises a stopping part (114) protruding from the hole wall of the suction hole (111) , a sliding hole (116) that traverses the stopping part (114) , and at least one air vent (116) , the check valve (13) being capable of sliding in the sliding hole (115) and closing the at least one air vent (116) when it abuts against the stopping part (114) .
The bowl cover of claim 1, characterized in that, the second coil (22) is connected with the first coil (12) in wireless communication for signal transmission between the coils.
The bowl cover of claim 1, characterized in that, the suction device (20) is detachably connected with the cover body assembly (10) , and at least part of the contact face between the suction device (20) and the cover body assembly (10) is sealed.
The bowl cover of claim 1, characterized in that, the housing (21) comprises a lower lid (212) and an upper lid (211) that envelops the lower lid (212) , the second coil (22) being fixed to the lower lid (212) , the lower lid (212) being provided with a mounting hole (213) which is in communication with the suction hole (111) , the suction module (23) being in communication with the mounting hole (213) .
The bowl cover of claim 7, characterized in that, the suction module (23) is mounted to the upper lid (211) and/or the lower lid (212) .
The bowl cover of claim 1, characterized in that, the suction device (20) further comprises a connecting member (24) fitted to the housing (21) , the connecting member (24) being connected to a surface of the cover body assembly (10) by suction.
The bowl cover of claim 9, characterized in that, the connecting member (24) comprises a through hole (241) which is in communication with the suction hole (111) .
A bowl, characterized in that, it comprises a bowl body assembly (30) and a bowl cover of anyone of claims 1 to 10, the bowl cover covering the bowl body assembly (30) , the first coil (12) being electrically connected with the bowl body assembly (30) .
A food processor, characterized in that, it comprises a main unit (40) and a bowl of claim 11, the bowl being mounted to the main unit (40) , the main unit (40) being electrically connected with the first coil (12) .