CN212891748U

CN212891748U - Vacuum fresh-keeping box

Info

Publication number: CN212891748U
Application number: CN202020588320.4U
Authority: CN
Inventors: 刘柯君; 袁新平
Original assignee: Foshan Speed Frog Electronic Technology Co ltd
Current assignee: Foshan Speed Frog Electronic Technology Co ltd
Priority date: 2020-04-17
Filing date: 2020-04-17
Publication date: 2021-04-06
Anticipated expiration: 2030-04-17

Abstract

The utility model relates to a vacuum preservation box. It includes box body, lid and vacuum host computer, and the upper surface of lid is equipped with extraction opening and sealing washer, and the extraction opening is located the sealing washer, is equipped with the check valve that bleeds on the extraction opening, and the check valve that bleeds includes anticreep dish down, goes up deformation seal dish and middle sealed post, and anticreep dish and last deformation seal dish are located the upper end and the lower extreme of middle sealed post respectively down, and middle sealed post is located the extraction opening, goes up to warp and is equipped with the aspirating hole on the seal dish. The utility model discloses a last sealed dish that warp of check valve bleeds can be sunken deformation downwards gradually at vacuum host computer evacuation in-process, and the air in the box body is taken away through the aspirating hole, and middle sealed post also descends gradually along with last sealed dish deformation of warping until middle sealed post is sealed up the extraction opening to the realization keeps the vacuum state of box body. The utility model discloses a check valve bleeds simple structure, possess elasticity, yielding, sealed effectual, be difficult to lose heart, the dismouting is easy, convenient washing.

Description

Vacuum fresh-keeping box

Technical Field

The utility model relates to a technical field of preservation box, in particular to vacuum preservation box.

Background

The existing vacuum preservation box generally comprises a vacuum main machine, a box cover and a box body, wherein the vacuum main machine is arranged on the box cover, an air exhaust opening is formed in the box cover, a sealing structure is arranged on the air exhaust opening, and the air exhaust opening is sealed after the vacuum main machine vacuumizes the box body, so that the vacuum state of the box body is kept. However, the sealing structure on the box cover of the existing vacuum preservation box has the disadvantages of complex structure, high production cost, difficult disassembly and assembly and inconvenient cleaning.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a seal structure is simple, low in production cost, easy, the convenient vacuum preservation box of washing of dismouting.

The purpose of the utility model is realized like this:

a vacuum preservation box, which comprises a box body, a box cover and a vacuum main machine, wherein the box cover is arranged on an opening of the box body, the upper surface of the box cover is provided with an air exhaust port and a sealing ring, the air exhaust port is positioned in the sealing ring, the air exhaust port is provided with an air exhaust one-way valve, the air exhaust one-way valve is I-shaped and comprises a lower anti-release disc, an upper deformation sealing disc and a middle sealing column, the middle sealing column is in a shape with a thick upper end and a thin lower end, the lower anti-falling disc and the upper deformation sealing disc are respectively arranged at the upper end and the lower end of the middle sealing column, the lower anti-falling disc and the upper deformation sealing disc are respectively positioned at the upper side and the lower side of the air exhaust opening, the middle sealing column is positioned in the air exhaust opening, the upper deformation sealing disc is provided with an air exhaust hole, the bottom of the vacuum host is provided with an air suction port, the bottom of the vacuum host abuts against the sealing ring, and the air suction port is located in the sealing ring. The utility model discloses a last sealed dish that warp of bleed check valve can be sunken deformation downwards gradually in vacuum host computer evacuation process, and the air in the box body is taken away through the aspirating hole, and the outer air of box body can't get into the box body through bleed check valve and extraction opening, and middle seal post also descends gradually along with last deformation sealed dish deformation, has lived the extraction opening until middle seal post is sealed to the realization keeps the vacuum state of box body. The utility model discloses a check valve bleeds simple structure, possess elasticity, yielding, sealed effectual, be difficult to lose heart, the dismouting is easy, convenient washing.

The utility model can be further improved as follows.

The air suction one-way valve is integrally made of silica gel or rubber or silicon rubber. Materials such as silica gel, rubber and silicon rubber have good elasticity and softness, so that sealing and dismounting can be better realized.

The middle sealing column is in an inverted frustum shape, so that the descending of the middle sealing column can better seal the air pumping hole.

Go up to warp and seal the dish and be the cap form, upward be equipped with annular or circular shape elastic deformation boss on warping the dish, the elastic deformation boss is that the upper surface and the lower surface of going up to warp the dish constitute upwards protruding together, when elastic deformation boss pressurized, easy undercut, thereby make the utility model discloses an it warp more easily to go up to warp to seal the dish. Conversely, the elastically deformed boss is restored to its original shape after the pressure is removed.

The upper surface of the box cover is provided with a sealing ring positioning groove, the air suction opening and the sealing ring are arranged in the sealing ring positioning groove, and the size and the shape of the sealing ring positioning groove are matched with those of the sealing ring, so that the sealing ring is positioned, and the sealing ring is fixed firmly.

The extraction hole is staggered with the middle sealing column, a gap exists between the extraction hole and the bottom surface of the sealing ring positioning groove, the extraction hole still keeps communicated with the extraction hole in the process that the middle sealing column gradually descends, and the vacuum host still performs vacuum pumping on the box body until the extraction hole is completely sealed by the middle sealing column. Therefore, the utility model has the advantages of reasonable design.

Go up the top of warping the closing disc and be equipped with the pressure release lug, when the user wants to open the lid, when taking out the food in the box, the user need rock the pressure release lug for the check valve that bleeds takes place to warp, finally makes the check valve that bleeds open the extraction opening, and in the external air can get into the box body, atmospheric pressure in the box body was unanimous with external atmospheric pressure, and the pressure of lid reduces, user alright with easily open the lid, take out the food in the box body.

A plurality of the air exhaust holes are formed in the elastic deformation boss at annular or circular intervals and are located on the outer side of the middle sealing column.

The diameter of extraction opening < the diameter of lower anticreep dish < the diameter of the upper end of middle sealed post < go up the diameter of warping the sealing disc, consequently, the utility model has the advantages of reasonable design, can prevent effectively that the check valve that bleeds from breaking away from the extraction opening easily, it is fixed firm to bleed the check valve, and sealing performance is good.

The vacuum host comprises a shell, wherein an anti-toppling switch, a power switch, a circuit board, a battery, a vacuum pump, an air pressure sensor, a communicating pipe and an electromagnetic valve are arranged on the shell, the vacuum pump, the electromagnetic valve, the air pressure sensor and an air suction port are communicated through the communicating pipe, and the circuit board is electrically connected with the anti-toppling switch, the power switch, the battery, the vacuum pump, the air pressure sensor, the communicating pipe and the electromagnetic valve respectively. The air pressure sensor is used for detecting the negative pressure in the inner cavity of the box body, when the pressure in the box body reaches a negative pressure set value of the air pressure sensor, the air pressure sensor sends a signal to the circuit board, and the circuit board controls the vacuum pump to stop vacuumizing and controls the electromagnetic valve to be opened. The anti-toppling switch is used for detecting whether the vacuum host is in a normal placing state or not, so that the vacuum host is effectively prevented from being vacuumized after being toppled over on the upper surface of the box cover, no labor is needed in working, and electric energy is wasted. The anti-tip switch belongs to the prior art in the field of household appliances and is not described in detail here.

The utility model has the advantages as follows:

(one) the utility model discloses a last sealed dish that warp of check valve bleeds can be sunken deformation downwards gradually at vacuum host computer evacuation in-process, and the air in the box body is taken away through the aspirating hole, and middle sealed post also is followed to warp sealed dish and is warp and descend gradually, has lived the extraction opening until middle sealed post is sealed to the realization keeps the vacuum state of box body. The utility model discloses a check valve bleeds simple structure, possess elasticity, yielding, sealed effectual, be difficult to lose heart, the dismouting is easy, convenient washing.

Drawings

Fig. 1 is a schematic structural view of the vacuum preservation box of the present invention.

Fig. 2 is the schematic view of the decomposition structure of the vacuum preservation box of the present invention.

Fig. 3 is an exploded schematic view of the vacuum main unit of the present invention (the curve in fig. 3 indicates the connection position of each end of the communication pipe).

Fig. 4 is a plan view of the present invention.

Fig. 5 is a cross-sectional view taken at a-a in fig. 4 (with the vacuum master in an evacuated state).

Fig. 6 is a cross-sectional view of the vacuum main unit according to the present invention in a non-operating state.

Fig. 7 is an enlarged view at a in fig. 5.

Fig. 8 is an enlarged view at B in fig. 6.

Fig. 9 is a schematic structural view of the air exhaust check valve of the present invention.

Fig. 10 is a schematic view of another angle of the air exhaust check valve of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

In a first embodiment, as shown in fig. 1 to 10, a vacuum preservation box includes a vacuum main unit 1, a box body 3 and a box cover 2, the box cover 2 is covered on an upper opening of the box body 3, a sealing ring positioning groove 22 is arranged on an upper surface of the box cover 2, an air suction port 21 and a sealing ring 23 are arranged in the sealing ring positioning groove 22, the air suction port 21 is located in the sealing ring 23, an air suction port 18 is arranged at the bottom of the vacuum main unit 1, the bottom of the vacuum main unit 1 abuts against the sealing ring 23, and the air suction port 18 is located in the sealing ring 23.

The vacuum host 1 comprises a machine shell 11, wherein an anti-toppling switch 114, a power switch 110, a circuit board 15, a battery 12, a vacuum pump 16, an air pressure sensor 14, a communicating pipe 17 and an electromagnetic valve 13 are arranged on the machine shell, the vacuum pump 16, the electromagnetic valve 13, the air pressure sensor 14 and an air suction port 18 are communicated through the communicating pipe 17, the circuit board 15 is respectively electrically connected with the power switch 110, the anti-toppling switch 114, the battery 12, the vacuum pump 16, the air pressure sensor 14, the communicating pipe 17 and the electromagnetic valve 13, the air suction port 18 is arranged at the bottom of the machine shell 11, and the power switch 110 is arranged.

The air exhaust check valve 4 is arranged on the air exhaust opening 21, the air exhaust check valve 4 is in an I shape, the air exhaust check valve 4 comprises a lower anti-falling disc 43, an upper deformation sealing disc 41 and a middle sealing column 42, the middle sealing column 42 is thick at the upper end and thin at the lower end, the lower anti-falling disc 43 and the upper deformation sealing disc 41 are respectively arranged at the upper end and the lower end of the middle sealing column 42, the lower anti-falling disc 43 and the upper deformation sealing disc 41 are respectively arranged at the upper side and the lower side of the air exhaust opening 21, the middle sealing column 42 is arranged in the air exhaust opening 21, an air exhaust hole 44 is formed in the upper deformation sealing disc 41, the air exhaust hole 44 and the middle sealing column 42 are staggered, and a gap exists between the air exhaust hole and the bottom surface of the sealing ring.

The upper deformation sealing disc is in a hat shape, an annular or round elastic deformation boss 45 is arranged on the upper deformation sealing disc 41, and the elastic deformation boss 45 is formed by upward protruding the upper surface and the lower surface of the upper deformation sealing disc 41 together.

The intermediate seal post 42 is rounded off.

The size and the shape of the sealing ring positioning groove 22 are matched with those of the sealing ring 23. The seal ring positioning groove 22 is formed by the upper surface and the lower surface of the box cover 2 being depressed downward together. Of course, the sealing ring positioning groove 22 of the present invention may also be a positioning ring or a circular protrusion on the upper surface of the box cover 2, the positioning ring or the circular protrusion constitutes the sealing ring positioning groove 22.

The air suction one-way valve is integrally made of silica gel or rubber or silicon rubber.

The top of the upper deformation sealing disc 41 is provided with a pressure relief bump 46.

A plurality of the air exhaust holes 44 are arranged on the elastic deformation boss 45 at annular or circular intervals, and the air exhaust holes 44 are positioned on the outer side of the middle sealing column 42.

The diameter of the pumping hole 21 < the diameter of the lower escape prevention disk < the diameter of the upper end of the middle seal post 42 < the diameter of the upper deformable sealing disk 41.

The utility model discloses a theory of operation is:

when a user wants to keep food fresh by using the utility model, the user puts food into the box body 3 at first, then the box cover 2 is covered, then the user places the vacuum host 1 on the sealing ring positioning groove 22, the bottom of the vacuum host 1 is abutted against the sealing ring 23, then the user presses the power switch 110, the circuit board 15 controls the vacuum pump 16 to start and the electromagnetic valve 13 to close, the vacuum pump 16 starts to pump air, the air in the box body 3 is gradually pumped away, the air in the box body 3 sequentially passes through the air pumping hole 21, the air pumping hole 44, the air suction port 18, the communicating pipe 17 and the vacuum pump 16, and finally the air is discharged into the atmosphere, the air outside the box body can not enter the box body through the air pumping check valve and the air pumping hole, the pressure in the box body 3 is lower and lower, in the process, the vacuum host 1 is tightly sucked on the box cover 2, the pressure in the, the air exhaust one-way valve 4 is gradually deformed under the pressure of atmospheric pressure, the elastic deformation boss of the upper sealing disc gradually sinks downwards, the middle sealing column 42 also drops along with the elastic deformation boss, when the negative pressure in the box body 3 is lower than the negative pressure set value of the air pressure sensor 14, the air pressure sensor 14 sends a signal to the circuit board 15, the circuit board 15 controls the vacuum pump 16 to stop air exhaust and open the electromagnetic valve, at the moment, the outer side wall of the middle sealing column 42 of the air exhaust one-way valve 4 also seals the air exhaust port 21, so that the inner cavity of the box body 3 is in a vacuum state, and the freshness preservation of food in the box body is. In addition, after the vacuum pumping, the electromagnetic valve is opened, the electromagnetic valve is communicated with the outside, the inner cavity of the sealing ring positioning groove 22 and the air suction port 18, outside air enters the sealing ring positioning groove 22 and the air suction port 18, and the air pressure of the inner cavity of the sealing ring positioning groove 22 and the air suction port 18 is the same as that of the atmospheric environment, so that the vacuum host 1 is not tightly sucked on the box cover 2 any more, and a user can easily detach the vacuum host 1 from the box cover 2 directly.

Similarly, when the user wants to open lid 2, when taking out the food in the box, the user need wave pressure release lug 46 with the hand for 4 take place to warp of bleeding, finally make 4 one-way valves of bleeding open extraction opening 21, in the external air can get into box body 3, atmospheric pressure in the box body 3 is unanimous with external atmospheric pressure, the pressure reduction of lid 2, elastic deformation boss reconversion, user alright with easily open lid 2, take out the food in the box body 3.

Claims

1. The utility model provides a vacuum preservation box, includes box body and lid, characterized by, the upper surface of lid is equipped with extraction opening and sealing washer, the extraction opening is located the sealing washer, be equipped with the check valve that bleeds on the extraction opening, the check valve that bleeds is the I shape, the check valve that bleeds includes down anticreep dish, goes up deformation sealing disc and middle sealed post, middle sealed post is the thick, the thin form of lower extreme in upper end, upper end and the lower extreme of middle sealed post are located respectively to anticreep dish and last deformation sealing disc down, anticreep dish and last deformation sealing disc are located the upside and the downside of extraction opening respectively down, middle sealed post is located the extraction opening, upward be equipped with the aspirating hole on the deformation sealing disc.

2. The vacuum preservation box of claim 1, wherein the suction check valve is integrally made of silicone rubber or silicone rubber.

3. The vacuum crisper of claim 1 or 2, wherein the middle sealing cylinder has an inverted truncated cone shape.

4. The vacuum crisper of claim 3, further comprising a vacuum main unit, wherein the bottom of the vacuum main unit is provided with an air suction port, the bottom of the vacuum main unit is abutted against the sealing ring, and the air suction port is positioned in the sealing ring.

5. The vacuum refreshing box according to claim 3, wherein the upper deformable sealing plate is provided with an annular or circular elastic deformable boss.

6. The vacuum refreshing box according to claim 5, wherein the elastically deformable projections are formed by upwardly protruding upper and lower surfaces of the upper deformable closing plate together.

7. The vacuum crisper of claim 3, wherein the suction holes are staggered from the middle sealing post.

8. The vacuum preservation box of claim 4, wherein the upper surface of the box cover is provided with a sealing ring positioning groove, and the pumping port and the sealing ring are arranged in the sealing ring positioning groove.

9. The vacuum preservation box of claim 1, wherein a pressure relief bump is provided on the top of the upper deformable sealing plate.

10. The vacuum preservation box of claim 5, wherein the elastic deformation boss is provided with a plurality of air exhaust holes at annular or circular intervals, and the air exhaust holes are positioned at the outer side of the middle sealing column.