CN210697315U

CN210697315U - Air exhaust and pressure maintaining assembly, vacuum head assembly, cup cover assembly and food processor

Info

Publication number: CN210697315U
Application number: CN201920678297.5U
Authority: CN
Inventors: 廖平; 阮浩翔
Original assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Current assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Priority date: 2019-04-28
Filing date: 2019-05-13
Publication date: 2020-06-09
Anticipated expiration: 2029-05-13
Also published as: CN111839276B; CN210697316U; CN111839276A

Abstract

The application provides an air exhaust and pressure maintaining assembly, a vacuum head assembly, a cup cover assembly and a food processor. The utility model provides an air exhaust and pressurize subassembly, it can carry out evacuation and pressurize to the cup, air exhaust and pressurize subassembly include air exhaust device, apron and equipment extremely the check valve of apron, the apron include with the air vent of space intercommunication in the cup, the check valve includes the separation blade, and when evacuating, air exhaust device's suction can be opened the separation blade, in order to the handle air in the cup passes through the air vent is taken out, after the operation of cup evacuation, the separation blade with the area of the internal atmospheric pressure contact of cup with the ratio more than or equal to 0.1 less than or equal to 0.5 of the area of the top surface of separation blade, increased the separation blade with the area of the internal atmospheric pressure contact of cup makes the pressure increase that the separation blade received makes the separation blade with the apron laminating is inseparabler, pressurize that can be better.

Description

Air exhaust and pressure maintaining assembly, vacuum head assembly, cup cover assembly and food processor

Technical Field

The application relates to the field of small household appliances, in particular to an air exhaust and pressure maintaining assembly, a vacuum head assembly, a cup cover assembly and a food processor.

Background

With the increasing living standard of people, many different types of food processors appear on the market. The functions of the food processor mainly include, but are not limited to, functions of making soybean milk, squeezing fruit juice, making rice paste, mincing meat, shaving ice, making coffee and/or blending facial masks and the like. The food processor can comprise a soybean milk machine, a stirrer or a wall breaking food processor and other machines for crushing and stirring food. Relevant cooking machine can carry out the evacuation to the space in the stirring cup subassembly, keeps fresh and anti-oxidant to eating the material. The pressurize effect of relevant cooking machine's check valve is not good, leaks gas easily, leads to the vacuum hold time shorter.

SUMMERY OF THE UTILITY MODEL

The application provides an air exhaust and pressurize subassembly, vacuum head subassembly, bowl cover subassembly and cooking machine of pressurize effect preferred.

An aspect of the application provides an aspect of bleed and pressurize subassembly, and it can carry out evacuation and pressurize to the cup, bleed and pressurize subassembly include air exhaust device, apron and equipment extremely the check valve of apron, the apron include with the air vent of space intercommunication in the cup, the check valve includes the separation blade, and during the evacuation, air exhaust device's suction can be opened the separation blade, in order to handle air process in the cup the air vent is taken out, behind the cup evacuation operation, the separation blade with the area of the atmospheric pressure contact in the cup with the ratio more than or equal to 0.1 less than or equal to 0.5 of the area of the top surface of separation blade.

According to the technical scheme, after the cup body is vacuumized, the ratio of the area of air pressure contact in the separation blade to the area of the top surface of the separation blade is greater than or equal to 0.1 and less than or equal to 0.5, the area of air pressure contact in the separation blade and the cup body is increased, the pressure on the separation blade is increased, the separation blade is attached to the cover plate more tightly, and the pressure can be better maintained.

Further, the cover plate comprises a plurality of vent holes, and the ratio of the sum of the areas of the vent holes to the area of the top surface of the baffle plate is greater than or equal to 0.1 and less than or equal to 0.5.

According to the technical scheme, the air exhaust and pressure maintaining assembly increases the contact area of the blocking piece and the air pressure in the cup body by increasing the area of the vent hole, and the structure is simple.

Further, the cover plate comprises a positioning portion, the one-way valve is assembled to the positioning portion, the positioning portion comprises an upper surface and a recessed portion recessed from the upper surface, and the blocking piece can be attached to the upper surface to seal.

Above-mentioned technical scheme bleed and pressurize subassembly through setting up the depressed part increase the separation blade with the area of the atmospheric pressure contact in the cup, simple structure, just the depressed part provides the space that the separation blade atress warp makes the sealed effect of separation blade is better.

Further, the ratio of the area of the concave part to the area of the top surface of the baffle plate is more than or equal to 0.1 and less than or equal to 0.5.

The recessed part of the technical scheme enables the one-way valve to have a better sealing effect.

Furthermore, the positioning part comprises a bottom surface opposite to the upper surface and a pressing part formed by extending from the bottom surface, the one-way valve comprises a pressing part, and the pressing part presses the pressing part to apply external force to the blocking piece so that the blocking piece is attached to the upper surface more tightly.

According to the technical scheme, the air exhaust and pressure maintaining assembly utilizes the pressing part to press the pressing part to apply external force to the blocking piece, so that the blocking piece is attached to the cover plate more tightly, the one-way valve is effectively guaranteed to have a better sealing effect, and pressure can be maintained better.

Further, the apron includes location portion, the check valve equipment extremely location portion, location portion include the upper surface and certainly the protruding muscle that the upper surface extends, the protruding muscle encloses into the depressed part, the separation blade can with protruding muscle laminating is in order to seal.

Furthermore, the positioning part comprises a bottom surface opposite to the upper surface, the one-way valve comprises a supporting part, and the bottom surface supports the supporting part to apply external force to the blocking piece so that the blocking piece is attached to the convex rib more tightly.

Above-mentioned technical scheme bleed and pressurize subassembly utilize certainly protruding muscle that the upper surface extends props the separation blade makes the separation blade atress more closely laminates protruding muscle guarantees effectively the check valve has the sealed effect of preferred, pressurize that can be better.

Further, bleed and pressurize subassembly includes the lid of bleeding, the lid of bleeding includes the crimping portion, the crimping portion support the pressure the separation blade for the separation blade applys external force makes the separation blade more closely laminate the upper surface.

According to the technical scheme, the air exhaust and pressure maintaining assembly utilizes the crimping part of the air exhaust cover to crimp the separation blade so as to provide external force for the separation blade, and the one-way valve is not required to be pulled during assembly and is easy to assemble.

Further, the air exhaust and pressure maintaining assembly comprises an air exhaust cover and a first elastic piece located between the air exhaust cover and the blocking piece, and the first elastic piece abuts against the blocking piece to apply external force to the blocking piece to enable the blocking piece to be attached to the upper surface more tightly.

According to the technical scheme, the air exhaust and pressure maintaining assembly utilizes the first elastic piece to be in compression joint with the separation blade so as to provide external force for the separation blade, and the check valve is not required to be pulled during assembly and is easy to assemble.

Furthermore, the cover plate comprises an air inlet hole, the air exhaust cover comprises an air inlet communicated with the air inlet hole and an air outlet communicated with the vent hole, the air exhaust device is communicated with the air outlet, and during pressure relief, outside air can enter the cup body through the air inlet hole and the air inlet hole.

Above-mentioned technical scheme bleed and pressurize subassembly through bleed cover set up with the air inlet of external intercommunication and with the gas outlet of air exhaust device intercommunication to carry out evacuation and pressure release, simple structure.

Further, the air exhaust cover comprises a storage part, the blocking piece is located in the storage part, the air outlet is communicated with the storage part, and when the vacuum is exhausted, air in the cup body is exhausted through the vent hole, the storage part and the air outlet.

Another aspect of the application provides a vacuum head subassembly, including the aforesaid bleed and pressurize subassembly, base and upper cover, the base with the upper cover encloses into the space, bleed and pressurize subassembly are located in the space, the apron set up in the base.

Further, the base includes the bottom plate and from the lateral wall that the bottom plate extends, the bottom plate, the lateral wall and the upper cover encloses into the space, the apron is the bottom plate.

Another aspect of this application provides a cup cover subassembly, including bowl cover and the above-mentioned subassembly of bleeding and pressurize, the air vent set up in the bowl cover.

The present application further provides a cup cover assembly, including bowl cover and above-mentioned vacuum head assembly, the vacuum head assembly assemble extremely the bowl cover.

The application also provides a cooking machine, including above-mentioned bowl cover subassembly and equipment extremely the cup of bowl cover subassembly.

The application still provides a cooking machine, including cup and above-mentioned vacuum head subassembly, the vacuum head subassembly equipment extremely the cup.

Drawings

Fig. 1 is a perspective view of a food processor according to a first embodiment of the present application.

Fig. 2 is an exploded view of the vacuum head assembly of the food processor shown in fig. 1.

Fig. 3 is a perspective view of a lower cover of the vacuum head assembly shown in fig. 2.

Fig. 4 is a perspective view of the suction cap shown in fig. 2.

Fig. 5 is a cross-sectional schematic view of a button assembly of the vacuum head assembly shown in fig. 2.

Fig. 6 is a cross-sectional schematic view of the lid assembly of the food processor shown in fig. 1.

Fig. 7 is an enlarged view at B of the sectional view shown in fig. 6.

Fig. 8 is a perspective view of the seal of the food processor shown in fig. 1.

Fig. 9 is an enlarged view at a of the sectional view shown in fig. 6.

Fig. 10 is a schematic cross-sectional view of a second embodiment of a lid assembly of the present application.

Fig. 11 is an enlarged view of the circled portion of the cross-sectional view shown in fig. 10.

Fig. 12 is a schematic cross-sectional view of a third embodiment of a lid assembly of the present application.

Fig. 13 is an enlarged view of the circled portion of the cross-sectional view shown in fig. 12.

Fig. 14 is a schematic cross-sectional view of a fourth embodiment of a lid assembly of the present application.

Fig. 15 is an enlarged view of the circled portion of the cross-sectional view shown in fig. 14.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "a number" means two or more. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

Referring to fig. 1 to 9, the food processor of the present application can be a soymilk maker, a juice extractor, a wall breaking machine, etc. The cooking machine comprises a machine base assembly 1, a cup body assembly 2 and a cup cover assembly 3. The stand assembly 1 includes a housing 10 and a motor (not shown) disposed within the housing 10. A stirring blade assembly (not shown) is provided in the cup body assembly 2. The motor drives the stirring knife assembly to rotate so as to stir the food materials.

Referring now to fig. 1 with emphasis on the illustration, the cup assembly 2 is removably mounted to the base assembly 1. Food materials are contained in the cup body component 2 and are stirred in the cup body component. The cup body assembly 2 comprises a cup body 21, a cup body handle 22 arranged on one side of the cup body 21 and a base 24 positioned at one end of the cup body 21. The cup 21 may be made of glass, metal (e.g., stainless steel), or the like, and includes a rim (not shown). In the illustrated embodiment, the base 24 can be clamped or screwed onto the base assembly 1, and the cup assembly 2 is mounted on the base assembly 1 through the assembly of the base 24 and the housing 10 of the base assembly 1.

Referring now to FIG. 6, the lid assembly 3 is removably assembled to the cup 21. The cap assembly 3 includes a vacuum head assembly 32, a seal 31 and a cap 30 assembled together. The lid 30 is assembled to the cup 21. The seal 31 is attached to the lid to secure the vacuum head assembly 32 with the lid 30. The cup cover 30 comprises an assembling portion 301 provided with a channel 3010, a limiting rib 302 extending from the assembling portion 301 and an installation portion 303. The mounting portion 303 is assembled to a rim of the cup body 21. The channel 3010 is for adding food material. The limiting rib 302 and the mounting portion 303 extend in opposite directions.

Referring now to FIG. 2, the vacuum head assembly 32 includes a base 320, a sealing ring 321, a one-way valve 322, a pumping and pressure maintaining assembly, a circuit board 325, and an upper cover 327. The air pumping and pressure maintaining assembly comprises a cover plate, a pumping cover 323, a pumping device 324, a button assembly 326, a first air pipe 328 connecting the pumping cover 323 and the pumping device 324, and a second air pipe 329 connecting the pumping cover 323 and the button assembly 326.

Referring to fig. 2, 3 and 7, the base 320 includes a bottom plate 3201, a side wall 3202 and the positioning portion 330 extending from the bottom plate 3201, an air inlet 3205 disposed on the bottom plate 3201, and a mounting hole 3203 and an air vent 3204 disposed on the positioning portion 330. The vent hole 3204 and the intake hole 3205 communicate with the space inside the cup body 21. The bottom plate 3201, the side walls 3202, and the top cover 327 enclose a space 3206. The air extractor 324, the circuit board 325, the button assembly 326, the first air tube 328 and the second air tube 329 are located in the space 3206. The positioning part 330 includes an upper surface 3301 and a bottom surface 3305 opposite to each other, a recessed part 3302 recessed from the upper surface 3301, and a pressing part 3303 extending from the bottom surface 3305. In the illustrated embodiment, the cover plate is the base plate 3201. In the illustrated embodiment, the positioning part 330 protrudes from the bottom plate 3201, but the present application is not limited thereto. The positioning part 330 may partially protrude from the bottom plate 3201, that is, an upper surface 3301 of the positioning part 330 is disposed coplanar with a top surface of the bottom plate 3201.

In the illustrated embodiment, the side walls 3202 extend from the bottom plate 3201 to facilitate assembly of the button assembly 326 with the top cover 327, although the present application is not limited thereto. The side wall 3202 may be disposed on the upper cover 327, and the base 320 may be disposed only on the bottom plate 3201.

Referring to fig. 6 to 7, the check valve 322 includes a mounting portion 3220 assembled to the mounting hole 3203, and a blocking portion 3221 and a supporting portion 3222 extending from two opposite ends of the mounting portion 3220. The suction force of the suction device 324 causes the baffle 3221 to open the vent hole 3204 to perform a vacuum pumping operation, and the baffle 3221 may be used to seal the vent hole 3204 to prevent external air from entering through the vent hole. The stopping piece 3221 includes a middle portion 32211 corresponding to the concave portion 3302 and an edge portion 32210 extending from the middle portion 32211. The edge portion 32210 is attached to the upper surface 3301 for sealing. The pressing portion 3303 abuts against the abutting portion 3222, the stop piece 3221 is pulled downward, and the middle portion 32211 deforms into the concave portion 3302, so that the edge portion 32210 is attached to the upper surface 3301 more tightly, and the sealing effect of the check valve 322 is effectively ensured. In this embodiment, the pressing portion 3303 is an additional component for applying an external force to the blocking portion 3221, and the additional component is integrally disposed with the cover plate, so that the external force applied by the additional component makes the blocking portion 3221 attach to the cover plate more tightly, and the sealing effect of the check valve 322 is effectively ensured.

In the illustrated embodiment, the pressing portion 3303 extends toward the holding portion 3222, and the application is not limited thereto. The pressing part 3303 may be a bottom surface 3305 of the positioning part 330.

When the depressed part 3302 is not provided during the vacuuming operation of the food processor, the contact area between the stopper 3221 and the air pressure in the cup body 21 is the total area of all the vent holes 3204, and after the depressed part 3302 is provided, the contact area of the stopping piece 3221 and the air pressure in the cup body 21 is the area of the concave part 3302, and obviously, the area of the concave part 3302 is larger than the total area of all the vent holes 3204, therefore, after the concave portion 3302 is provided, the contact area of the stopper 3221 with the air pressure in the cup body 21 is increased, and according to the pressure formula, because the pressure of the air extractor 324 is fixed, the contact area between the baffle 3221 and the air pressure in the cup 21 is increased, the external force applied to the blocking piece 3221 is also increased, so that the blocking piece 3221 is pressed more tightly, a better sealing effect is achieved, and pressure maintaining can be better performed. The ratio of the area of the concave part 3302 to the area of the top surface of the retaining piece 3221 is less than or equal to 0.5. The ratio of the area of the contact between the retaining plate 3221 and the air pressure in the cup body 21 to the area of the top surface of the retaining plate 3221 is greater than or equal to 0.1 and less than or equal to 0.5, so that the check valve 322 has a good sealing effect, and meanwhile, the vacuum-pumping operation can be effectively performed.

In the above embodiment, the concave portion 3302 is provided to increase the force-bearing area of the blocking piece 3221, but the present application is not limited thereto. The force-bearing area of the baffle 3221 may also be increased by increasing the area of the ventilation holes 3204 or increasing the number of the ventilation holes 3204. The ratio of the total area of all the vent holes 3204 to the area of the top surface of the stopper 3221 is 0.1 or more.

Referring to fig. 2 and 4, the suction cover 323 includes a top wall 3230, a side wall 3231 extending from the top wall 3230, and a first fixing post 3232 and a second fixing post 3233 extending from the side wall 3231. The top wall 3230, the side walls 3231 and the bottom plate 3201 form a receiving portion 3234. The first fixing post 3232 includes an air outlet port 3236 communicating with the receiving portion 3234. The second fixing post 3233 includes an air inlet port 3235 communicating with the air inlet port 3205. The first air tube 328 is fixed to the first fixing post 3232, and the second air tube 329 is fixed to the second fixing post 3233, so that the first air tube 328 and the second air tube 329 are easily assembled. The sealing ring 321 is located between the pumping cover 323 and the bottom plate 3201 of the base 320, so as to prevent air leakage between the pumping cover 323 and the bottom plate 3201 of the base 320.

In the illustrated embodiment, the pumping and pressure maintaining assembly is disposed on the vacuum head assembly 32, and the vacuum head assembly 32 is assembled to a cup cover 30, but the present application is not limited thereto. The positions of the air exhaust and pressure maintaining components can be set according to actual needs. For example, the vacuum head assembly can be directly assembled to a cup body, and can be assembled and fixed by means of screwing or screwing in the cup mouth of the cup body.

In the illustrated embodiment, the bottom plate 3201 of the vacuum head assembly 32 and the suction cover 323 enclose the receiving portion 3234, but the present application is not limited thereto. As shown in fig. 6, the channel 3010 and the bottom plate 3201 of the vacuum head assembly 32 may be eliminated, the assembly portion is designed as a plate-shaped portion that covers the cup body 21, and the cover plate of the suction and pressure maintaining assembly is the assembly portion. The mounting holes 3203, the vent holes 3204, and the air inlet holes 3205 are disposed in the assembly portion.

The first air tube 328 is communicated with the air suction device 324 and the air outlet 3236 of the air suction cover 323. When the air extractor 324 is operated, the suction force of the air extractor 324 causes the stopper 3221 to open the vent 3204, and the air in the cup 21 is extracted through the vent 3204 and the air outlet 3236. When the air extractor 324 stops working, the stop 3221 seals the vent 3204 to prevent outside air from entering the cup body 21. In the illustrated embodiment, the gas-withdrawal device 324 is a vacuum pump.

Referring to fig. 5, the button assembly 326 includes a support 3260, an actuating button 3261 assembled to the support 3260, a venting button 3263 and a venting valve body 3262, a sealing ring 3264 assembled to the venting button 3263, and a second elastic member 3265. The activation button 3261, when pressed, abuts a contact 3251 on the circuit board 325 to activate the air extractor 324, which is simple in structure and easier to operate than an activation button provided on the base assembly 1.

The exhaust valve body 3262 includes a receiving portion 32620 and an exhaust passage 32621 communicating with the receiving portion 32620. The second air pipe 329 communicates the exhaust passage 32621 with the air inlet 3235 of the suction cover 323. When the exhaust button 3263 is pressed, the exhaust button 3263 drives the sealing ring 3264 to move into the accommodating portion 32620 of the exhaust valve body 3262, so that the accommodating portion 32620 is communicated with the outside, outside air can enter the accommodating portion 32620, and further enters the cup body 21 through the second air pipe 329, the air inlet 3235 of the suction cover 323 and the air inlet 3205 of the base 320, so as to perform pressure relief, and the operation is simple and convenient. When the exhaust button 3263 is pressed, the exhaust button 3263 compresses the second elastic member 3265, and when the exhaust button 3263 is released, the elastic force of the second elastic member 3265 drives the exhaust button 3263 to reset, so as to further drive the sealing ring 3264 to reset, so that the external air cannot enter the accommodating portion 32620 of the exhaust valve body 3262, that is, cannot enter the cup body 21, and the vacuum degree in the cup body 21 is effectively ensured.

In the illustrated embodiment, the exhaust valve body 3262 is fixed to the support 3260 by a screw 3266, but the present application is not limited thereto. The exhaust valve body 3262 can be secured to the support 3260 by snap-fit, threaded engagement, or welding, among other methods. The exhaust valve body 3262 may also be integrally formed with the support 3260.

The upper cover 327 is fixed to the base 320. The upper cover 327 includes a first pressing portion 3270 corresponding to the activation button 3261 and a second pressing portion 3271 corresponding to the exhaust button 3263, the activation button 3261 can be pressed by pressing the first pressing portion 3270, and the exhaust button 3263 can be pressed by pressing the second pressing portion 3271, so as to protect the activation button 3261 and the exhaust button 3263.

Referring to fig. 3 and 8-9, the base 320 of the vacuum head assembly 32 includes a first extension 3207, a second extension 3208, and a third extension 3209 extending from the base plate 3201.

The sealing member 31 includes a main body 310, a first position-limiting portion 311 extending upward from the main body 310, a second position-limiting portion 312, a first sealing portion 313 extending upward from the second position-limiting portion 312, and a second sealing portion 314 extending downward from the main body 310, so that the sealing member 31 has better sealing effect and better strength, and the joints between the first sealing portion 313 and the second position-limiting portion 312 and between the second sealing portion 314 and the main body 310 are prevented from being broken. The present invention is not limited thereto, and the first sealing portion 313 and the second sealing portion 314 may be formed to extend from the main body portion 310 or from the second stopper portion 311.

The thicknesses of the first sealing part 313 and the second sealing part 314 are smaller than that of the first limiting part 311, and the first sealing part 313 and the second sealing part 314 are easy to deform, so that a better sealing effect is achieved. The main body portion 310, the first stopper portion 312, the second stopper portion 312, the first seal portion 313, and the second seal portion 314 are substantially annular.

The first limiting portion 311 is attached to the first extending portion 3207 and the second extending portion 3208 for sealing, the second limiting portion 312 is attached to the second extending portion 3208 for sealing, the first sealing portion 313 is attached to the limiting rib 302 of the cup cover 30 for sealing, and the main body portion 310 and the second sealing portion 314 are attached to the assembling portion 301 of the cup cover 30 for sealing, so that the sealing member 31 has a good sealing effect. The third extension part 3209 is located outside the limiting rib 302 of the cap 30 to limit the vacuum head assembly 32. The second seal portion 314 vacuum-adheres with the assembly portion 301 of the cap 30 to secure the seal 31 to the cap 30. When the pressure in the cup 21 is less than atmospheric pressure, the vacuum head assembly 32 is securely positioned to the lid 30 due to the atmospheric pressure. When the vacuum head assembly 32 needs to be taken down, the vacuum head assembly 32 can be taken down by pressing the exhaust button 3263 for pressure relief.

In the illustrated embodiment, the vent 3204 and the inlet 3205 are disposed on the vacuum head assembly 32, but the present application is not limited thereto. The vent hole 3204 and the air inlet hole 3205 may be disposed on the assembling portion 301 of the cup cover 30, that is, the assembling portion 301 is equivalent to the bottom plate 3201.

In the illustrated embodiment, the cap 30 includes a position-limiting rib 302, and the first sealing portion 313 of the sealing member 31 is attached to the position-limiting rib 302 of the cap 30 for sealing, which is not limited in the present application. When the cap 30 is not provided with the limiting rib 302, the second sealing part 314 of the sealing element 31 can be only attached to the assembling part 301 of the cap 30 for sealing.

In the above embodiment, the positioning portion 330 includes the concave portion 3302 formed by being concave from the upper surface 3301 and the pressing portion 3303 formed by extending from the bottom surface 3305, which is not limited in this application. Referring to fig. 10 to 11, in the second embodiment, the positioning portion 330 includes a rib 3304 extending from the upper surface 3301 and enclosing in a ring shape, and the cross section of the rib 3304 is a triangular structure. The convex rib 3304 is enclosed to form the concave part 3302. The stopping piece 3221 abuts against the convex rib 3304, the abutting portion 3222 abuts against the bottom surface 3305 of the positioning portion 330, the stopping piece 3221 is pulled downwards, and the middle portion 32211 deforms towards the concave portion 3302 surrounded by the convex rib 3304, so that the sealing effect of the one-way valve 322 is effectively ensured. In this embodiment, the rib 3304 is an additional component for applying an external force to the stopping piece 3221, and the additional component is integrally disposed with the cover plate, and the external force applied by the additional component makes the stopping piece 3221 attach to the cover plate more tightly.

Referring now to fig. 12-13, in a third embodiment, the suction cap 323 includes a crimp portion 3237 extending from the top wall 3230 in a direction toward the flap 3221 of the check valve 322. The pressing portion 3237 is pressed against the middle portion 32211 of the retaining piece 3221 to deform it in the direction of the concave portion 3302, so that the edge portion 32210 is attached to the upper surface 3301 more tightly, and the sealing effect of the one-way valve 322 is effectively ensured. In the illustrated embodiment, the positioning part 330 includes a concave part 3302, and the present application is not limited thereto. The positioning portion 330 may not be provided with the recessed portion 3302, and the pressing portion 3237 presses the stopping piece 3221 to achieve a better sealing effect. In this embodiment, the press-contact portion 3237 is an additional component for applying an external force to the stopping piece 3221, and the external force applied by the additional component makes the stopping piece 3221 adhere to the cover plate more closely.

Referring to fig. 14 to 15, in the fourth embodiment, the suction and pressure maintaining assembly includes a first elastic member 3238 located between the top wall 3230 of the suction cap 323 and the stop 3221 of the check valve 322, and the first elastic member 3238 is pressed to the stop 3221 to make it fit with the upper surface 3301 more tightly, so as to ensure the sealing effect of the check valve 322 effectively. In the illustrated embodiment, the positioning portion 330 is not provided with a recess, and the application is not limited thereto. The positioning portion 330 may also be provided with a recess, and the pressure of the first elastic element 3238 may deform the middle portion 32211 of the blocking piece 3221 towards the recess, so as to achieve a better sealing effect. In this embodiment, the first elastic element 3238 is an additional element for applying an external force to the blocking portion 3221, and the external force applied by the additional element makes the blocking portion 3221 adhere to the cover plate more tightly.

In the illustrated embodiment, the main body 310 of the sealing member 31 is attached to the assembling portion 301 of the cap 30 for sealing, but the present application is not limited thereto. The main body 310 may not be attached to the assembly portion 301.

This application is bled and is included for with the pressurize subassembly the additional member of external force is applyed to separation blade 3221, the external force that the additional member was applyed makes separation blade 3221 is laminated more closely the apron is guaranteed effectively check valve 322 has the sealed effect of preferred, pressurize that can be better.

Although the present application has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application, and all changes, substitutions and alterations that fall within the spirit and scope of the application are to be understood as being covered by the following claims.

Claims

1. The air exhaust and pressure maintaining assembly is characterized by comprising an air exhaust device (324), a cover plate and a one-way valve (322) assembled to the cover plate, wherein the cover plate comprises a vent hole (3204) communicated with the space in the cup body (21), the one-way valve (322) comprises a baffle (3221), the baffle (3221) can be opened by suction force of the air exhaust device (324) during vacuum exhaust so as to exhaust air in the cup body (21) through the vent hole (3204), and after the cup body (21) is vacuumized, the ratio of the area of contact between the baffle (3221) and air pressure in the cup body (21) to the area of the top surface of the baffle (3221) is greater than or equal to 0.1 and less than or equal to 0.5.

2. The evacuation and pressure maintaining assembly according to claim 1, wherein the cover plate comprises a plurality of vent holes (3204), and a ratio of a sum of areas of the plurality of vent holes (3204) to an area of the top surface of the blocking piece (3221) is greater than or equal to 0.1 and less than or equal to 0.5.

3. The evacuation and pressure maintaining assembly according to claim 1, wherein the cover plate comprises a positioning portion (330), the one-way valve (322) is assembled to the positioning portion (330), the positioning portion (330) comprises an upper surface (3301) and a recessed portion (3302) recessed from the upper surface (3301), and the blocking sheet (3221) is capable of fitting with the upper surface (3301) for sealing.

4. The evacuation and pressure maintaining assembly according to claim 3, wherein the ratio of the area of the recessed portion (3302) to the area of the top surface of the blocking piece (3221) is greater than or equal to 0.1 and less than or equal to 0.5.

5. The air extracting and pressure maintaining assembly according to claim 3, wherein the positioning portion (330) comprises a bottom surface (3305) opposite to the upper surface (3301) and a pressing portion (3303) extending from the bottom surface (3305), the check valve (322) comprises a pressing portion (3222), and the pressing portion (3303) presses against the pressing portion (3222) to apply an external force to the blocking piece (3221) so that the blocking piece (3221) is more closely attached to the upper surface (3301).

6. The evacuation and pressure maintaining assembly according to claim 1, wherein the cover plate comprises a positioning portion (330), the one-way valve (322) is assembled to the positioning portion (330), the positioning portion (330) comprises an upper surface (3301) and a rib (3304) extending from the upper surface (3301), the rib (3304) forms a concave portion (3302), and the blocking sheet (3221) can be attached to the rib (3304) for sealing.

7. The air extracting and pressure maintaining assembly according to claim 6, wherein the positioning portion (330) comprises a bottom surface (3305) opposite to the upper surface (3301), the one-way valve (322) comprises a supporting portion (3222), and the bottom surface (3305) supports the supporting portion (3222) to apply an external force to the blocking piece (3221) so that the blocking piece (3221) is more closely attached to the convex rib (3304).

8. The gas pumping and pressure maintaining assembly according to claim 3, wherein the gas pumping and pressure maintaining assembly comprises a gas pumping cover (323), the gas pumping cover (323) comprises a crimping portion (3237), and the crimping portion (3237) presses the blocking piece (3221) to apply an external force to the blocking piece (3221) so that the blocking piece (3221) is attached to the upper surface (3301) more closely.

9. The gas pumping and pressure maintaining assembly according to claim 3, comprising a gas pumping cover (323) and a first elastic member (3238) located between the gas pumping cover (323) and the blocking piece (3221), wherein the first elastic member (3238) presses the blocking piece (3221) to apply an external force to the blocking piece (3221) so that the blocking piece (3221) is more tightly attached to the upper surface (3301).

10. A gas and pressure evacuation assembly according to claim 8, wherein the cover plate comprises a gas inlet aperture (3205), the lid (323) comprises a gas inlet aperture (3235) in communication with the gas inlet aperture (3205) and a gas outlet aperture (3236) in communication with the vent aperture (3204), the gas evacuation device (324) is in communication with the gas outlet aperture (3236), and ambient air can enter the cup (21) via the gas inlet aperture (3235) and the gas inlet aperture (3205) when pressure is relieved.

11. Gas evacuation and pressure maintaining assembly according to claim 10, wherein the lid (323) comprises a housing (3234), the flap (3221) being located in the housing (3234), the air outlet (3236) being in communication with the housing (3234), the air in the cup (21) being evacuated through the vent hole (3204), the housing (3234) and the air outlet (3236) during evacuation.

12. Vacuum head assembly, comprising a base (320), a top cover (327) and a pumping and pressure maintaining assembly according to any one of claims 1 to 11, the base (320) and the top cover (327) enclosing a space (3206), the pumping and pressure maintaining assembly being located within the space (3206), the cover plate being provided to the base (320).

13. The vacuum head assembly as recited in claim 12, wherein the base (320) includes a floor (3201) and sidewalls (3202) extending from the floor (3201), the sidewalls (3202), and the top cover (327) enclose the space (3206), and the cover plate is the floor (3201).

14. A lid assembly comprising a lid (30) and a pump and dwell assembly as claimed in any one of claims 1 to 11, the vent (3204) being provided in the lid (30).

15. A lid assembly comprising a lid (30) and a vacuum head assembly as claimed in claim 12 or 13 assembled to the lid (30).

16. A food processor including a lid assembly as claimed in claim 14 or 15 and a cup (21) assembled to the lid assembly.

17. Food processor characterized in that it comprises a cup body (21) and a vacuum head assembly according to claim 12 or 13, assembled to said cup body (21).