WO2020221208A1

WO2020221208A1 - Air extraction and pressure release assembly, vacuum head assembly, jar lid assembly and food processor

Info

Publication number: WO2020221208A1
Application number: PCT/CN2020/087255
Authority: WO
Inventors: Ping Liao; Haoxiang RUAN
Original assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co., Ltd.
Priority date: 2019-04-28
Filing date: 2020-04-27
Publication date: 2020-11-05
Also published as: EP3962333A4; KR20220002464A; EP3962333A1

Abstract

An air extraction and pressure release assembly, a vacuum head assembly (32), a jar lid assembly (3) and a food processor. The air extraction and pressure release assembly, being capable of extracting air to create vacuum and releasing pressure for a jar body (21), comprises an air extraction cover (323), an air extraction device (324) and an air admission hole (3205) and a venting hole (3204) that are in communication with a space inside the jar body (21). The air extraction cover (323) comprises an air inlet (3235) in communication with the air admission hole (3205) and an air outlet (3236) in communication with the venting hole (3204). The air extraction device (324) is in communication with the air outlet (3236). When the air extraction and pressure release assembly extracts air to create vacuum, the air extraction device (324) extracts air inside the jar body (21) via the venting hole (3204) and the air outlet (3236). When the air extraction and pressure release assembly releases pressure, outside air can enter into the jar body (21) via the air admission hole (3205) and the air inlet (3235). The structure is simple.

Description

Air Extraction and Pressure Release Assembly, Vacuum Head Assembly, Jar Lid Assembly and Food Processor

Field of the Invention

The invention relates to the field of small electrical domestic appliances, and in particular to an air extraction and pressure release assembly, a vacuum head assembly, a jar lid assembly and a food processor.

Background of the Invention

As people’s life quality improves day by day, many different types of food processors appear on the market. The functions of a food processor can mainly include, inter alia: making soymilk, juicing, making rice paste, grinding meat, making shaved ice, making coffee and/or preparing facial masks, etc. Food processors can include machines that grind and blend ingredients, such as soymilk machines, blenders or cell-wall breaking food processors. A relevant food processor can extract air to create vacuum in a space inside a blender jar assembly, to keep ingredients fresh and prevent them from being oxidized. The air extraction and pressure release assembly of such relevant food processor is of a complicated structure.

Summary of the Invention

The present application provides an air extraction and pressure release assembly, a vacuum head assembly, a jar lid assembly and a food processor which have simple structures.

One aspect of the present application provides an air extraction and pressure release assembly that is capable of extracting air to create vacuum and releasing pressure for a jar body, comprising an air extraction cover, an air extraction device and an air admission hole and a venting hole that are in communication with a space inside the jar body. The air extraction cover comprises an air inlet in communication with the air admission hole and an air outlet in communication with the venting hole. The air extraction device is in communication with the air outlet. When the air extraction and pressure release assembly extracts air to create vacuum, the air extraction device extracts air inside the jar body via the venting hole and the air outlet. When the air extraction and pressure release assembly releases pressure, outside air can enter into the jar body via the air admission hole and the air inlet.

By providing the air extraction cover with the air inlet in communication with the outside and the air outlet in communication with the air extraction device, the air extraction and pressure release assembly of the above-described technical solution realizes air extraction for creating vacuum and pressure release and with a simple structure.

Optionally, the air extraction cover comprises a receiving part in communication with the air outlet. During air extraction for creating vacuum, air inside the jar body is vented out via the venting hole, the receiving part and the air outlet.

Optionally, the air extraction and pressure release assembly comprises a check valve. The check valve comprises a flapper located inside the receiving part. A suction force of the air extraction device is capable of opening the flapper, so that air inside the jar body enters into the receiving part through the venting hole. The flapper is also capable of sealing the venting hole to prevent outside air from entering through the venting hole.

By providing the check valve, the air extraction and pressure release assembly of the above-described technical solution prevents outside air from entering through the venting hole. The receiving part can be used to accommodate the flapper of the check valve, thus space is saved.

Optionally, the air extraction cover comprises a top wall, a side wall extending from the top wall and a first fixing column and a second fixing column that extend from the side wall. The top wall and the side wall enclose and form the receiving part. The air outlet travels throughout the first fixing column. The air inlet travels throughout the second fixing column.

By providing the first fixing column and the second fixing column to fix a first air pipe and a second air pipe, the air extraction cover of the above-described technical solution facilitates the assembly of the first air pipe and the second air pipe.

Optionally, the air extraction and pressure release assembly comprises a cover plate at which the air admission hole and the venting hole are arranged, and the cover plate and the air extraction cover enclose and form the receiving part.

Optionally, the air extraction and pressure release assembly comprises a button assembly. The button assembly comprises a venting button and a venting valve body.

Optionally, the venting valve body comprises an accommodating part and a venting passage in communication with the accommodating part. The venting passage is in communication with the air inlet. A movement of the venting button relative to the venting valve body can make outside air enter into the accommodating part.

The button assembly of the above-described technical solution realizes pressure release by means of pressing, which is simple and convenient to operate.

Optionally, the button assembly comprises an elastic member and a sealing ring that are assembled to the venting button. The venting button drives the sealing ring to move when the venting button is pressed, so as to make outside air enter into the accommodating part. An elastic force of the elastic member drives the sealing ring to return back when the venting button is released, so as to isolate the accommodating part from outside space.

By means of the venting button driving the sealing ring and the elastic member to move, the button assembly of the above-described technical solution realizes pressure release with a simply structure.

Optionally, the button assembly further comprises a start button and a circuit board. The circuit board comprises a contact. The start button presses the contact to start the air extraction device.

The button assembly of the above-described technical solution which comprises the start button so as to start the air extraction device, is of a simple structure and easy to operate.

Optionally, the air extraction and pressure release assembly comprises a first air pipe that puts the air outlet and the air extraction device in communication and a second air pipe that puts the air inlet and the venting passage in communication.

Another aspect of the present application provides a vacuum head assembly comprising the above-described air extraction and pressure release assembly, a base and an upper cover. The base and the upper cover enclose and form a space inside which the air extraction and pressure release assembly is located. The cover plate is arranged at the base.

By providing the air extraction cover with the air inlet in communication with the outside and the air outlet in communication with the air extraction device, the vacuum head assembly of the above-described technical solution realizes air extraction for creating vacuum and pressure release with a simple structure.

Optionally, the base comprises a base plate and a side wall extending from the base plate. The base plate, the side wall and the upper cover enclose and form the space. The cover plate is the base plate.

Yet another aspect of the present application provides a vacuum head assembly comprising the above-described air extraction and pressure release assembly, a base plate and an upper cover. The base plate and the upper cover enclose and form a space inside which the air extraction and pressure release assembly is located. The air admission hole and the venting hole are arranged at the base plate.

Optionally, the vacuum head assembly comprises a side wall extending from the base plate. The base plate, the side wall and the upper cover enclose and form the space.

The vacuum head assembly of the above-described technical solution facilitates assembly of the button assembly.

Also yet another aspect of the present application provides a jar lid assembly comprising a jar lid and the above-described air extraction and pressure release assembly. The air admission hole and the venting hole are arranged at the jar lid.

The present application also provides a jar lid assembly comprising a jar lid and the above-described vacuum head assembly. The above-described vacuum head assembly is assembled to the jar lid.

By providing the air extraction and pressure release assembly, the jar lid assembly of the above-described technical solution realizes air extraction for creating vacuum and pressure release with a simple structure.

Optionally, the jar lid assembly comprises a sealing member that connects the vacuum head assembly and the jar lid.

The vacuum head assembly of the above-described technical solution is connected with the jar lid by means of the sealing member, which is easy to assemble and realizes good sealing.

Optionally, the jar lid comprises an assembling part and a position limiting rib extending from the assembling part. The sealing member comprises a first sealing part that can used to be pressed against the position limiting rib to seal and a second sealing part that can be pressed against the assembling part to seal.

The sealing member of the above-described technical solution seals at the same time the position limiting rib and the assembling part, and realizes good sealing.

Optionally, the sealing member comprises a body part that can be used to be pressed against the assembling part and a first position limiting part and a second position limiting part that extend from the body part. The second position limiting part is located between the first sealing part and the first position limiting part. The vacuum head assembly comprises a second extending part located between the first position limiting part and the second position limiting part. The first position limiting part and the second position limiting part are pressed against the second extending part to seal.

The sealing member of the above-described technical solution is pressed against the first position limiting part and the second position limiting part of the vacuum head assembly to seal, and realizes good sealing.

Optionally, the vacuum head assembly comprises a first extending part which is located at one side of the first position limiting part and pressed against the first position limiting part to seal.

The first position limiting part of the sealing member is pressed against the third extending part of the vacuum head assembly of the above-described technical solution to seal, and realizes good sealing.

Optionally, the vacuum head assembly comprises a third extending part. The position limiting rib is located between the third extending part and the first sealing part.

The first extending part of the vacuum head assembly of the above-described technical solution is located at one side of the position limiting rib so as to limit the position of the vacuum head assembly and prevent the vacuum head assembly from wobbling.

The present application also provides a food processor comprising the above-described jar lid assembly and a jar body assembled to the jar lid assembly.

By means of the air extraction and pressure release assembly, the food processor of the above-described technical solution realizes air extraction for creating vacuum and pressure release with a simple structure.

The present application also provides a food processor comprising a jar body and the above-described vacuum head assembly, the vacuum head assembly being assembled to the jar body.

Description of the Drawings

Figure 1 is a view in perspective of a food processor of the present application;

Figure 2 is an exploded view of a vacuum head assembly of the present application;

Figure 3 is a view in perspective of a base of the vacuum head assembly shown in Figure 2;

Figure 4 is a view in perspective of an air extraction cover shown in Figure 2;

Figure 5 is a schematic sectional view of a button assembly of the vacuum head assembly shown in Figure 2;

Figure 6 is a schematic sectional view of a jar lid assembly of the present application;

Figure 7 is an enlarged view of the detail B of the schematic sectional view shown in Figure 6;

Figure 8 is a view in perspective of a sealing member of a jar lid assembly of the present application;

Figure 9 is an enlarged view of the detail A of the schematic sectional view shown in Figure 6.

Detailed Description of the Invention

Exemplary embodiments, examples of 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 reference signs 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 present application. Instead, they are merely examples of devices and methods in accordance with some aspects of the present application described in detail in the appended claims.

The terms used in the present application are merely for the purpose of describing specific embodiments, instead of being intended to limit the present application. Unless otherwise defined, the technical terms or scientific terms used in the present application shall have the common meanings as understood by an ordinary person skilled in the art to which the present application relates. Words such as “first” , “second” and so on used in the description and claims of the present application do not represent any order, quantity or significance, but are used only to distinguish different constituent parts. In the same way, words such as “one” and so on do not represent any quantity limitation either, but mean that there is at least one. Words such as “aplurality of” or “several” mean two or more than two. Unless otherwise indicated, words such as “front” , “back” , “lower” and/or “upper” and so on are merely for facilitating description, but are not limited to a position or a spatial orientation. Words such as “comprise” or “include” and so on mean that the element or object preceding “comprise” or “include” contains the element or object listed after “comprise” or “include” and equivalents thereof, and do not exclude other elements or objects. Words such as “connect” or “connected” and so on are not limited to a physical or mechanical connection, and can include an electrical connection, whether direct or indirect. Singular forms such as “a/an” , “the” and “this” used in the description and appended claims of the present application are intended to also include plural forms, unless otherwise clearly indicated by the context. It should be also understood that, the term “and/or” used herein means any and all possible combinations including one or more of the related listed items.

As shown in Figure 1 to Figure 9, a food processor of the present application can be a soymilk machine, a juicer, a cell-wall breaking blender, etc. The food processor comprises a base assembly 1, a jar body assembly 2 and a jar lid assembly 3. The base assembly 1 comprises a housing 10 and an electric motor (not illustrated) arranged inside the housing 10. Inside the jar body assembly 2 is provided a blender blade assembly (not illustrated) . The electric motor drives the blender blade assembly to rotate, so as to blend and grind ingredients.

Mainly in reference to Figure 1, the jar body assembly 2 is detachably mounted on the base assembly 1. The jar body assembly 2 can be filled with ingredients, which can be blended and grinded inside it. The jar body assembly 2 comprises a jar body 21, a jar body handle 22 arranged at one side of the jar body 21 and a base 24 located at one end of the jar body 21. The jar body 21 can be made of a glass, a metal (for example, stainless steel) , etc., and comprises a jar opening (not illustrated) . In the embodiment illustrated, the base 24 can be held in a snap-fit manner or screwed on the base assembly 1. By the assembly of the base 24 with the housing 10 of the base assembly 1, the jar body assembly 2 is mounted on the base assembly 1.

Mainly in reference to Figure 6, the jar lid assembly 3 is detachably assembled to the jar body 21. The jar lid assembly 3 comprises a vacuum head assembly 32, a sealing member 31 and a jar lid 30 that are assembled together. The jar lid 30 is assembled to the jar body 21. The sealing member 31 is sucked and attached to the jar lid so as to fix the vacuum head assembly 32 and the jar lid 30 together. The jar lid 30 comprises an assembling part 301 provided with a passage 3010, a position limiting rib 302 extending from the assembling part 301 and a mounting part 303. The mounting part 303 is assembled to the jar opening of the jar body 21. The passage 3010 can be used for adding ingredients. The position limiting rib 302 and the mounting part 303 extend in opposite directions.

Mainly in reference to Figure 2, the vacuum head assembly 32 comprises a base 320, a sealing ring 321, a check valve 322, an air extraction and pressure release assembly, a circuit board 325 and an upper cover 327. The air extraction and pressure release assembly comprises a cover plate, an air extraction cover 323, an air extraction device 324, a button assembly 326, a first air pipe 328 connecting the air extraction cover 323 and the air extraction device 324 and a second air pipe 329 connecting the air extraction cover 323 and the button assembly 326.

Mainly in reference to Figure 3, the base 320 comprises a base plate 3201, a side wall 3202 extending from the base plate 3201 and a mounting hole 3203, a venting hole 3204 and an air admission hole 3205 which are arranged in the base plate 3201. The venting hole 3204 and the air admission hole 3205 are in communication with a space inside the jar body 21. The base plate 3201, the side wall 3202 and the upper cover 327 enclose and form a space 3206. The air extraction device 324, the circuit board 325, the button assembly 326, the first air pipe 328 and the second air pipe 329 are located inside the space 3206. In the embodiment illustrated, the cover plate is the base plate 3201.

In the embodiment illustrated, the side wall 3202 is formed by extending from the base plate 3201, facilitating the assembly of the upper cover 327 with the button assembly 326. But the present application is not limited to this. The side wall 3202 can also be arranged at the upper cover 327, and it is sufficient for the base 320 to be provided with the base plate 3201.

Mainly in reference to Figure 6 to Figure 7, the check valve 322 comprises a mounting part 3220 assembled to the mounting hole 3203 and a flapper 3221 extending from the mounting part 3220. A suction force of the air extraction device 324 makes the flapper 3221 open the venting hole 3204, so as to extract air to create vacuum. The flapper 3221 can be used to seal the venting hole 3204 to prevent outside air from entering through the venting hole.

Mainly in reference to Figure 2 and Figure 4, the air extraction cover 323 comprises a top wall 3230, a side wall 3231 extending from the top wall 3230 and a first fixing column 3232 and a second fixing column 3233 extending from the side wall 3231. The top wall 3230, the side wall 3231 and the base plate 3201 enclose and form a receiving part 3234. The first fixing column 3232 comprises an air outlet 3236 in communication with the receiving part 3234. The second fixing column 3233 comprises an air inlet 3235 in communication with the air admission hole 3205. The first air pipe 328 is fixed to the first fixing column 3232, and the second air pipe 329 is fixed to the second fixing column 3233, making it easy to assemble the first air pipe 328 and the second pipe 329. The sealing ring 321 is located between the air extraction cover 323 and the base plate 3201 of the base 320, preventing air leak between the air extraction cover 323 and the base plate 3201 of the base 320.

In the embodiment illustrated, the air extraction and pressure release assembly is arranged at the vacuum head assembly 32, and the vacuum head assembly 32 is assembled to a jar lid 30. But the present application is not limited to this. The location of the air extraction and pressure release assembly can be arranged according to actual needs. For example, the vacuum head assembly can be directly assembled to a jar body, and can be assembled and fixed in ways of a threaded connection or being screwed to the jar opening of the jar body, etc.

In the embodiment illustrated, the base plate 3201 of the vacuum head assembly 32 and the air extraction cover 323 enclose and form the receiving part 3234. But the present application is not limited to this. As shown in reference to Figure 6, it is possible to cancel the passage 3010 and the base plate 3201 of the vacuum head assembly 32, and to design the assembling part to be a plate-shaped part which is arranged to cover the jar body 21. The cover plate of the air extraction and pressure release assembly is the assembling part. The mounting hole 3203, the venting hole 3204 and the air admission hole 3205 are arranged at the assembling part.

The first air pipe 328 puts in communication the air extraction device 324 and the air outlet 3236 of the air extraction cover 323. When the air extraction device 324 is operating, a suction force of the air extraction device 324 makes the flapper 3221 open the venting hole 3204, air inside the jar body 21 is sucked out via the venting hole 3204 and the air outlet 3236. When the air extraction device 324 stops operating, the flapper 3221 seals the venting hole 3204 and prevents outside air from entering into the jar body 21. In the embodiment illustrated, the air extraction device 324 is a vacuum pump.

Mainly in reference to Figure 5, the button assembly 326 comprises: a support 3260; a start button 3261, a venting button 3263 and a venting valve body 3262 that are assembled to the support 3260; a sealing ring 3264 and an elastic member 3265 that are assembled to the venting button 3263. When pressed, the start button 3261 will abut against a contact 3251 on the circuit board 325, so as to start the air extraction device 324, which is of a simple structure and easier to operate compared to providing a start button on the base assembly 1.

The venting valve body 3262 comprises an accommodating part 32620 and a venting passage 32621 in communication with the accommodating part 32620. The second air pipe 329 puts in communication the venting passage 32621 and the air inlet 3235 of the air extraction cover 323. When the venting button 3263 is pressed, the venting button 3263 drives the sealing ring 3264 to move towards the inside of the accommodating part 32620 of the venting valve body 3262, so that the accommodating part 32620 is in communication with the outside and outside air can enter into the accommodating part 32620 and further enter into the jar body 21 via the second air pipe 329, the air inlet 3235 of the air extraction cover 323 and the air admission hole 3205 of the base 320, so as to realize pressure release, which is easy and convenient to operate. When the venting button 3263 is pressed, the venting button 3263 will compress the elastic member 3265. When the venting button 3263 is released, an elastic force of the elastic member 3265 drives the venting button 3263 to return back and further drives the sealing ring 3264 to return back, thus outside air cannot enter into the accommodating part 32620 of the venting valve body 3262, i.e., cannot enter into the jar body 21, effectively ensuring the vacuum inside the jar body 21.

In the embodiment illustrated, the venting valve body 3262 is fixed to the support 3260 by means of a screw 3266. But the present application is not limited to this. The venting valve body 3262 can be fixed to the support 3260 by means of a snap-fit connection, a threaded cooperation or welding, etc. The venting valve body 3262 can also be formed integrally with the support 3260.

The upper cover 327 is fixed to the base 320. The upper cover 327 comprises a first pressing part 3270 that is configured to correspond to the start button 3261, and a second pressing part 3271 that is configured to correspond to the venting button 3263. In order to press the start button 3261, all that is needed is to press the first pressing part 3270. In order to press the venting button 3263, all that is needed is to press the second pressing part 3271. The start button 3261 and the venting button 3263 are thus protected.

Mainly in reference to Figure 9, the base 320 of the vacuum head assembly 32 comprises a first extending part 3207, a second extending part 3208 and a third extending part 3209 that extend from the base plate 3201.

Mainly in reference to Figure 8 and Figure 9, the sealing member 31 comprises a body part 310, a first position limiting part 311 extending upwards from the body part 310, a second position limiting part 312, a first sealing part 313 extending upwards from the second position limiting part 312, and a second sealing part 314 extending downwards from the body part 310. Thus, it is effectively ensured that the sealing member 31 realizes relatively good sealing, while having relatively good strength and preventing the junction between the first sealing part 313 and the second position limiting part 312 and the junction between the second sealing part 314 and the body part 310 from breaking. But the present application is not limited to this. The first sealing part 313 and the second sealing part 314 also can be formed by extending from the body part 310, or be formed by extending from the second position limiting part 312.

The thickness of the first sealing part 313 and the second sealing part 314 is smaller than that of the first position limiting part 311. The first sealing part 313 and the second sealing part 314 can easily deform and thus realize better sealing. The body part 310, the first position limiting part 312, the second position limiting part 312, the first sealing part 313 and the second sealing part 314 are substantially circular ring-shaped.

The first position limiting part 311 is pressed against the first extending part 3207 and the second extending part 3208 to seal, the second position limiting part 312 is pressed against the second extending part 3208 to seal, the first sealing part 313 is pressed against the position limiting rib 302 of the jar lid 30 to seal, and the body part 310 and the second sealing part 314 are pressed against the assembling part 301 of the jar lid 30 to seal, so that the sealing member 31 realizes very good sealing. The third extending part 3209 is located at an outer side of the position limiting rib 302 of the jar lid 30, so as to limit the position of the vacuum head assembly 32. The second sealing part 314 is sucked by vacuum against the assembling part 301 of the jar lid 30, so as to fasten the sealing member 31 to the jar lid 30. When the air pressure inside the jar body 21 is lower than the atmospheric pressure, the vacuum head assembly 32 will be firmly positioned at the jar lid 30 due to the atmospheric pressure. When the vacuum head assembly 32 needs to be removed, all that is needed is to press the venting button 3263 to release pressure, so as to remove the vacuum head assembly 32.

In the illustrated embodiment, the venting hole 3204 and the air admission hole 3205 are arranged at the vacuum head assembly 32. But the present application is not limited to this. The venting hole 3204 and the air admission hole 3205 can be arranged at the assembly part 301 of the jar lid 30, in other words, the assembly part 301 is equivalent to the base plate 3201.

In the illustrated embodiment, the jar lid 30 comprises the position limiting rib 302, and the first sealing part 313 of the sealing member 31 is pressed against the position limiting rib 302 of the jar lid 30 to seal. But the present application is not limited to this. When the jar lid 30 is not provided with the position limiting rib 302, sealing can be achieved only by means of the second sealing part 314 of the sealing member 31 being pressed against the assembling part 301 of the jar lid 30.

In the illustrated embodiment, the body part 310 of the sealing member 31 is pressed against the assembling part 301 of the jar lid 30 to seal. But the present application is not limited to this. The body part 310 can be not pressed against the assembling part 301.

By providing the air extraction cover 323 with the air inlet 3235 in communication with the button assembly 326 and the air outlet 3236 in communication with the air extraction device 324, the air extraction and pressure release assembly of the present application realizes air extraction for creating vacuum and pressure release with a simple structure.

What have been described above are merely preferred embodiments of the present application, and not for the purpose of limiting the present application in any form. Although the present application has been disclosed above by means of preferred embodiments, they are not intended to limit the present application. By using the above disclosed technical contents, any person skilled in the art could make equivalent embodiments having some changes or modifications by equal replacements within a scope not departing from the technical solutions of the present application. Any simple change, equivalent replacement or modification to the above embodiments made according to the technical essences of the present application falls within the scope of technical solutions of the present application, as long as it does not depart from the contents of the technical solutions of the present application.

Claims

An air extraction and pressure release assembly that is capable of extracting air to create vacuum and releasing pressure for a jar body (21) , characterized in that, the air extraction and pressure release assembly comprises an air extraction cover (323) , an air extraction device (324) , and an air admission hole (3205) and a venting hole (3204) that are in communication with a space inside the jar body (21) , the air extraction cover (323) comprising an air inlet (3235) in communication with the air admission hole (3205) and an air outlet (3236) in communication with the venting hole (3204) , the air extraction device (324) being in communication with the air outlet (3236) , the air extraction device (324) extracting air inside the jar body (21) via the venting hole (3204) and the air outlet (3236) when the air extraction and pressure release assembly extracts air to create vacuum, outside air can enter into the jar body (21) via the air admission hole (3235) and the air inlet (3205) when the air extraction and pressure release assembly releases pressure.
The air extraction and pressure release assembly of claim 1, characterized in that, the air extraction cover (323) comprises a receiving part (3234) in communication with the air outlet (3236) , air inside the jar body (21) being vented out via the venting hole (3204) , the receiving part (3234) and the air outlet (3236) when the air extraction and pressure release assembly extracts air to create vacuum.
The air extraction and pressure release assembly of claim 2, characterized in that, the air extraction and pressure release assembly comprises a check valve (322) , the check valve (322) comprising a flapper (3221) located inside the receiving part (3234) , a suction force of the air extraction device (324) being capable of opening the flapper (3221) so that air inside the jar body (21) enters into the receiving part (3234) through the venting hole (3204) , the flapper (3221) being capable of sealing the venting hole (3204) to prevent outside air from entering through the venting hole (3204) .
The air extraction and pressure release assembly of claim 2 or 3, characterized in that, the air extraction cover (323) comprises a top wall (3230) , a side wall (3231) extending from the top wall (3230) and a first fixing column (3232) and a second fixing column (3233) that extend from the side wall (3231) , the top wall (3230) and the side wall (3231) enclosing and forming the receiving part (3234) , the air outlet (3236) traveling throughout the first fixing column (3232) , the air inlet (3235) traveling throughout the second fixing column (3233) .
The air extraction and pressure release assembly of claim 3, characterized in that, the air extraction and pressure release assembly comprises a cover plate at which the air admission hole (3205) and the venting hole (3204) are arranged, the cover plate and the air extraction cover (323) enclosing and forming the receiving part (3234) .
The air extraction and pressure release assembly of any one of claims 1 to 4, characterized in that, the air extraction and pressure release assembly comprises a button assembly (326) , the button assembly (326) comprising a venting button (3263) and a venting valve body (3262) .
The air extraction and pressure release assembly of claim 6, characterized in that, the venting valve body (3262) comprises an accommodating part (32620) and a venting passage (32361) in communication with the accommodating part (32620) , the venting passage (32621) being in communication with the air inlet (3235) , a movement of the venting button (3263) relative to the venting valve body (3262) can make outside air enter into the accommodating part (32620) .
The air extraction and pressure release assembly of claim 7, characterized in that, the button assembly (326) comprises an elastic member (3265) and a sealing ring (3264) that are assembled to the venting button (3263) , the venting button (3263) driving the sealing ring (3264) to move when the venting button (3263) is pressed so as to make outside air enter into the accommodating part (32620) , an elastic force of the elastic member (3265) driving the sealing ring (3264) to return back when the venting button (3263) is released so as to isolate the accommodating part (32620) from outside space.
The air extraction and pressure release assembly of any one of claims 1 to 4, characterized in that, the button assembly (326) further comprises a start button (3261) and a circuit board (325) , the circuit board (325) comprising a contact (3251) , the start button (3261) pressing the contact (3251) to start the air extraction device (324) .
The air extraction and pressure release assembly of claim 7 or 8, characterized in that, the air extraction and pressure release assembly comprises a first air pipe (328) that puts the air outlet (3236) and the air extraction device (324) in communication and a second air pipe (329) that puts the air inlet (3235) and the venting passage (32361) in communication.
A vacuum head assembly, characterized in that, it comprises a base (320) , an upper cover (327) and the air extraction and pressure release assembly according to claim 5, the base (320) and the upper cover (327) enclosing and forming a space (3206) inside which the air extraction and pressure release assembly is located, the cover plate being arranged at the base (320) .
The vacuum head assembly of claim 11, characterized in that, the base (320) comprises a base plate (3201) and a side wall (3202) extending from the base plate (3201) , the base plate (3201) , the side wall (3202) and the upper cover (327) enclosing and forming the space (3206) , the cover plate being the base plate (3201) .
A vacuum head assembly, characterized in that, it comprises a base plate (3201) , an upper cover (327) and the air extraction and pressure release assembly according to any one of claims 1 to 4 and 6 to 10, the base plate (3201) and the upper cover (327) enclosing and forming a space (3206) inside which the air extraction and pressure release assembly is located, the air admission hole (3205) and the venting hole (3204) being arranged at the base plate (3201) .
The vacuum head assembly of claim 13, characterized in that, the vacuum head assembly comprises a side wall (3202) extending from the base plate (3201) , the base plate (3201) , the side wall (3202) and the upper cover (327) enclosing and forming the space (3206) .
A jar lid assembly, characterized in that, it comprises a jar lid (30) and the air extraction and pressure release assembly according to any one of claims 1 to 4 and 6 to 10, the air admission hole (3205) and the venting hole (3204) being arranged at the jar lid (30) .
A jar lid assembly, characterized in that, it comprises a jar lid (30) and the vacuum head assembly according to any one of claims 11 to 14, the vacuum head assembly being assembled to the jar lid (30) .
The jar lid assembly of claim 16, characterized in that, the jar lid assembly comprises a sealing member (31) that connects the vacuum head assembly and the jar lid (30) .
The jar lid assembly of claim 17, characterized in that, the jar lid (30) comprises an assembling part (301) and a position limiting rib (302) extending from the assembling part (301) , the sealing member (31) comprising a first sealing part (313) that can be used to be pressed against the position limiting rib (302) to seal and a second sealing part (314) that can be used to be pressed against the assembling part (301) to seal.
The jar lid assembly of claim 18, characterized in that, the sealing member (31) comprises a body part (310) that can be used to be pressed against the assembling part (301) and a first position limiting part (311) and a second position limiting part (312) that extend from the body part (310) , the second position limiting part (312) being located between the first sealing part (313) and the first position limiting part (311) , the vacuum head assembly comprising a second extending part (3208) located between the first position limiting part (311) and the second position limiting part (312) , the first position limiting part (311) and the second position limiting part (312) being pressed against the second extending part (3208) to seal.
The jar lid assembly of claim 19, characterized in that, the vacuum head assembly comprises a first extending part (3207) that is located at one side of the first position limiting part (311) and pressed against the first position limiting part (311) to seal.
The jar lid assembly of claim 20, characterized in that, the vacuum head assembly comprises a third extending part (3209) , the position limiting rib (302) being located between the third extending part (3209) and the first sealing part (313) .
A food processor, characterized in that, it comprises the jar lid assembly according to any one of claims 15 to 21 and a jar body (21) assembled to the jar lid assembly.
A food processor, characterized in that, it comprises a jar body (21) and the vacuum head assembly according to any one of claims 11 to 14, the vacuum head assembly being assembled to the jar body (21) .