CN218644874U - One-way valve and negative pressure fresh-keeping device with same - Google Patents

Abstract

The utility model provides a check valve and have fresh-keeping device of negative pressure of this check valve. The check valve includes a housing, a valve body, and a bracket. The housing is provided with first and second opposing vent holes. The valve body is disposed in the housing and configured to allow gas to flow from the first vent hole to the second vent hole and to prohibit gas from flowing from the second vent hole to the first vent hole. The support sets up in the shell for fixed valve body. The utility model discloses a check valve can be as required with the first air vent and the second air vent of shell to be connected to the optional position of aspiration line, can prevent effectively that the valve body from losing, avoids the valve body directly to set up the risk that produces the damage in the junction, moreover the check valve can assemble the back again with other part equipment of fresh-keeping device, has improved production efficiency.

Description

One-way valve and negative pressure fresh-keeping device with same

Technical Field

The utility model relates to an article storage field especially relates to a check valve and have fresh-keeping device of negative pressure of this check valve.

Background

Food mildew is mainly caused by microbial activity, most of moulds and yeasts rely on oxygen and proper temperature for survival, and the microbial activity can be reduced and food oxidation can be prevented by reducing the oxygen content and the temperature.

The crisper among the prior art needs to be connected with supporting bleed structure earlier and just can begin the evacuation, the crisper takes place to warp or damaged with the coupling part of bleed structure easily after long-time the use, especially easily make the valve body damage or lose under the condition that the coupling part is provided with the valve body, and then lead to the evacuation time extension or the evacuation failure, especially under the condition that the bleed structure sets up the walk-in upper strata at the refrigerator, the crisper is difficult for breaking away from the bleed structure, user operation difficulty, and take place coupling part deformation or damaged problem more easily.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome at least one technical defect among the prior art, provide a check valve.

The utility model discloses a further purpose of first aspect is to make the fixed reliable and stable of valve body.

The utility model discloses another further purpose of first aspect is convenience of customers opens storing space.

An object of the second aspect of the present invention is to provide a negative pressure fresh-keeping device with the check valve.

According to the utility model discloses an aspect provides a check valve, include:

the shell is provided with a first vent hole and a second vent hole which are opposite;

a valve body disposed within the housing and configured to allow gas to flow from the first vent to the second vent and to inhibit gas from flowing from the second vent to the first vent; and

and the support is arranged in the shell and used for fixing the valve body.

Optionally, the housing comprises:

a cylinder body formed with an installation opening, one of the first vent hole and the second vent hole being provided in a side plate of the cylinder body opposite to the installation opening; and

an end cap for closing the mounting opening, the other of the first and second vent holes being provided in the end cap.

Optionally, the housing further comprises:

two installation departments, set up to certainly respectively first air vent with the periphery of second air vent is to keeping away from the barrel with the direction of end cover extends, so that the check valve is connected with the tube coupling.

Optionally, the stent comprises:

the valve body is clamped and fixed in the mounting through hole; and

and the plurality of support legs are arranged to extend from the mounting plate to the first vent hole and the second vent hole respectively, and are abutted and fixed with the shell.

Optionally, the valve body comprises:

the connecting column is arranged in the mounting through hole;

the sealing part is arranged to extend outwards from the end part, close to the second vent hole, of the connecting column in the radial direction and seal the mounting through hole; and

and the clamping part is arranged to extend outwards in the radial direction from the end part of the connecting column close to the first vent hole, and limits the movement of the valve body to the direction close to the second vent hole.

Optionally, the mounting plate is provided with an annular protrusion which is arranged at the periphery of the mounting through hole and protrudes in a direction close to the sealing part; and is provided with

The projection of the annular bulge in the extending direction of the connecting column completely falls into the sealing part, and the projection area is smaller than that of the sealing part in the extending direction, so that the sealing part can open the mounting through hole.

Optionally, the check valve further comprises:

and the two sealing rings are respectively arranged between the two ends of the support and the shell.

According to the utility model discloses a second aspect provides a fresh-keeping device, include:

the preservation box is provided with a storage space;

the air pump is used for exhausting the gas in the storage space; and

the one-way valve is connected in series on an air suction pipeline between the storage space and the air suction pump; wherein the content of the first and second substances,

the check valve is set to enable the gas in the storage space to flow to the air pump through the first vent hole and then through the second vent hole.

Optionally, the fresh keeping device further includes:

the electronic pressure relief valve is connected in series on the air extraction pipeline and is used for communicating the air extraction pipeline with the ambient environment so as to recover the air pressure of the storage space; wherein the content of the first and second substances,

the electronic pressure relief valve is arranged on the upstream of the one-way valve.

Optionally, the crisper comprises:

the storage box comprises a main body and a plurality of storage boxes, wherein the main body comprises a partition plate extending horizontally, an upper peripheral plate extending upwards from the peripheral edge of the partition plate, and a lower peripheral plate extending downwards from the peripheral edge of the partition plate, the partition plate and the upper peripheral plate form a storage space in a surrounding mode, and the partition plate and the lower peripheral plate form an electric appliance space in a surrounding mode; and

the bottom plate is arranged at the opening of the electric appliance space and used for sealing the electric appliance space; wherein, the first and the second end of the pipe are connected with each other,

the air pump, the one-way valve and the electronic pressure relief valve are arranged in the electric appliance space; and is provided with

The partition plate is provided with an air exhaust hole penetrating through the partition plate, and the air exhaust hole is communicated with the air exhaust pump through the air exhaust pipeline.

The utility model discloses a check valve includes the shell, sets up the valve body in the shell and is used for the support of fixed valve body, can prevent effectively that the valve body from losing with the optional position of the first air vent and the second air vent connection to the aspiration line of shell as required, avoids the valve body directly to set up the risk that produces the damage in the junction, and the check valve can assemble again with other part equipment of fresh-keeping device after good moreover, has improved production efficiency.

Further, the utility model discloses a shell includes the barrel and sets up in the end cover of the erection orifice department of barrel, and the support is including the mounting panel that is used for fixed valve body and a plurality of stabilizer blades of contradicting with barrel and end cover, need not the fastener alright realize the support fixed in the shell, and not only stable in structure is reliable, and the assembly is simple moreover, has further improved production efficiency.

Further, the utility model discloses a fresh-keeping device establishes ties electronic relief valve between aspirating hole and check valve, not only can communicate storing space and surrounding environment when the user needs, improves storing space's pressure, and then convenience of customers opens storing space, still can make the valve body reset through the relief valve, closes the installation through-hole.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

fig. 1 is a schematic isometric view of a freshness retaining device according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the freshness device of FIG. 1;

FIG. 3 is a schematic isometric view of the preservation apparatus of FIG. 1, viewed from the bottom up, with the power base and floor removed;

fig. 4 is a schematic partially exploded view of the freshness retaining device of fig. 3.

FIG. 5 is a schematic cross-sectional view of the check valve of FIG. 3;

fig. 6 is a schematic isometric view of the valve body of fig. 5.

Detailed Description

Fig. 1 is a schematic isometric view of a freshness retaining device 100 according to an embodiment of the present invention; fig. 2 is a schematic cross-sectional view of the freshness retaining device 100 shown in fig. 1. Referring to fig. 1 and 2, the crisper device 100 comprises a crisper 110, a crisper cover 120, and electrical components.

The fresh food box 110 may be provided with a partition 111 horizontally extending to divide the fresh food box 110 into an upwardly open storage space 110a and an appliance space 110b disposed below the storage space 110a.

The fresh cover 120 may be disposed above the fresh food box 110 for opening and closing an opening of the storage space 110a.

The electric devices may be disposed in the appliance space 110b. The electrical device may include a suction pump 130 for evacuating gas from the storage space 110a.

The crisper 110 may be provided with a suction hole 114 penetrating the partition 111. The suction holes 114 may be provided in communication with a suction pump 130.

The electric appliance space 110b can be fixed relative to the storage space 110a, and when a user wants to operate the storage space 110a, the connecting pipeline between the storage space 110a and the air suction pump 130 does not need to be separated, so that the deformation or damage of the connecting part is avoided, and the service life of the fresh-keeping device 100 is prolonged.

In some embodiments, the crisper 110 can include a body, a trim panel 190, and a bottom panel 170.

The appliance space 110b may have a downward opening, and a bottom plate 170 may be disposed at the opening of the appliance space 110b to enclose the appliance space 110b.

The body may include a partition 111, an upper peripheral plate 112 extending upward from a peripheral edge of the partition 111, and a lower peripheral plate 113 extending downward from a peripheral edge of the partition 111. The partition 111 and the upper peripheral plate 112 may define a storage space 110a, and the partition 111 and the lower peripheral plate 113 may define an electrical space 110b.

The main body can be integrally formed to simplify the production procedure of the fresh-keeping box 110, improve the assembly efficiency of the fresh-keeping device 100 and further reduce the production cost of the fresh-keeping device 100.

The decorative plate 190 may be disposed on an outer wall of the lower peripheral plate 113 to distinguish the storage space 110a from the electrical appliance space 110b, so that a user may notice a use and placement environment of the electrical appliance, and a service life of the storage device may be prolonged.

And prompting the user of the safety problem of the placement environment of the electric device.

In some embodiments, the crisper 110 can also include an inner box 115. The inner case 115 is detachably disposed in the storage space 110a to facilitate cleaning of the storage space 110a.

The inner case 115 may be spaced apart from the partition plate 111 and the upper peripheral plate 112 to allow gas in the inner case 115 to flow toward the pumping holes 114.

In some embodiments, the preservation apparatus 100 can also include a power base 180. The power supply base 180 may be disposed below the crisper 110 for providing power to the electrical devices.

In some further embodiments, the power supply base 180 may be provided with at least one emission protrusion 181. The bottom wall of the crisper 110 may be provided with a receiving recess 171.

The power supply base 180 may be configured to electromagnetically inductively supply power to the electric devices when the fresh food box 110 is disposed on the power supply base 180 and the receiving recess 171 is coupled to one of the transmitting protrusions 181. The receiving recess 171 and the transmitting protrusion 181 may be provided with a receiving coil and a transmitting coil, respectively.

The transmitting protrusion 181 can be a conical boss, so that the user can take the fresh-keeping device 100 off the power supply base 180 by only inclining the fresh-keeping device 100, the operation is simple and convenient, the structure is stable and reliable, and the fresh-keeping device is not easy to deform and damage.

The receiving groove 171 may be provided to the bottom plate 170. While enclosing the appliance space 110b, electrical connections are made to the electrical devices.

In still further embodiments, the power supply base 180 and the crisper 110 may be provided with a conductive sheet, respectively, which makes electrical connection when the conductive sheet of the power supply base 180 contacts the conductive sheet of the crisper 110.

FIG. 3 is a schematic isometric view of the freshness device 100 of FIG. 1 from below looking up with the power base 180 and the bottom plate 170 removed; fig. 4 is a schematic partially exploded view of the freshness retaining device 100 shown in fig. 3. Referring to fig. 3 and 4, in some embodiments, the electrical device may also include a pressure sensor 140. The pressure sensor 140 may be configured to sense a gas pressure of the suction line between the suction hole 114 and the suction pump 130.

The suction pump 130 may be configured to stop operating based on the air pressure sensed by the pressure sensor 140. For example, the suction pump 130 stops operating when the air pressure sensed by the pressure sensor 140 is below a preset air pressure threshold. The suction pump 130 may also be configured to begin operation when the air pressure sensed by the pressure sensor 140 is above a preset air pressure threshold.

In some embodiments, the electrical device may also include an electronic pressure relief valve 150. The electronic pressure relief valve 150 may be connected in series to the pumping line between the pumping hole 114 and the pumping pump 130, and is used for communicating the pumping line with the ambient environment, so as to recover the air pressure in the storage space 110a.

In some embodiments, the preservation apparatus 100 further comprises a silencer 160. The muffler 160 may be provided to communicate with the outlet port of the suction pump 130 to reduce the operating noise of the suction pump 130.

The suction pump 130 and the muffler 160 may be covered with a shock-absorbing material and fixedly coupled to the partition 111. The fresh keeping apparatus 100 may further include a mounting base 131 and a mounting cover 132, wherein the mounting base 131 and the mounting cover 132 are configured to sandwich the air pump 130 and are fixed to the partition 111.

FIG. 5 is a schematic cross-sectional view of the check valve 200 of FIG. 3; fig. 6 is a schematic isometric view of the valve body 220 of fig. 5. Referring to fig. 5 and 6, a check valve 200 may be connected in series on the suction line between the suction hole 114 and the suction pump 130 to prevent ambient air from entering the storage space 110a, for example, gas enters the storage space 110a through the exhaust port of the suction pump 130 when the suction pump 130 is in a non-operating state.

The electronic pressure relief valve 150 may be disposed upstream of the check valve 200 to facilitate the user to open the storage space 110a, and may cause the valve body 220 to be reset to close the installation through hole 233 by the pressure relief valve.

In particular, the check valve 200 may include a housing, a valve body 220, and a bracket 230 to effectively prevent the valve body 220 from being lost, avoiding the risk of damage to the valve body 220 directly disposed at the connection.

The housing may be provided with opposing first and second vent holes 210a, 210b.

The valve body 220 may be disposed within the housing and configured to allow gas to flow from the first vent hole 210a to the second vent hole 210b and to inhibit gas from flowing from the second vent hole 210b to the first vent hole 210a.

The check valve 200 is disposed such that the second vent hole 210b is closer to the pump 130 than the first vent hole 210a, so that the gas in the storage space 110a flows to the pump 130 through the first vent hole 210a and then through the second vent hole 210b. That is, the first ventilation hole 210a is located upstream of the second ventilation hole 210b in the gas flow direction when the suction pump 130 is operated.

A bracket 230 may be disposed within the housing for securing the valve body 220.

In some further embodiments, the housing may include a cylinder 211 formed with a mounting opening and an end cap 212 for closing the mounting opening to facilitate mounting positioning of the bracket 230. In the illustrated embodiment, the cross-section of the cylinder 211 may be circular.

One of the first and second vent holes 210a and 210b may be provided at a side plate of the cylinder 211 opposite to the installation opening. The other of the first and second vent holes 210a and 210b is provided in the end cap 212.

The housing may also include two mounting portions 213. The two mounting portions 213 may be disposed to extend from the peripheries of the first and second vent holes 210a and 210b, respectively, in a direction away from the cylinder 211 and the end cap 212, so as to facilitate the connection of the check valve 200 with a pipeline.

In some further embodiments, the bracket 230 may include a mounting plate 231 and a plurality of legs 232 to define the position of the valve body 220 within the cylinder 211 in the direction of gas flow.

The mounting plate 231 may be provided with mounting through holes 233. The valve body 220 may be fastened to the mounting through-hole 233.

A plurality of legs 232 may be disposed to extend from the mounting plate 231 toward the first and second vent holes 210a and 210b, respectively, and be fixed in interference with the housing.

The number of legs 232 may be two. The legs 232 may be configured to have the same cross-section as the cylinder 211, and two legs 232 extend from the mounting plate 231 to the first and second ventilation holes 210a and 210b, respectively, to shorten the pumping time.

In some further embodiments, the valve body 220 may include a connection post 221, a sealing portion 222, and a trim portion 223 to facilitate deformation and restoration of the valve body 220.

The connection post 221 may be disposed within the mounting through-hole 233 to limit movement of the valve body 220 in a radial direction of the mounting through-hole 233.

The sealing part 222 may be provided to extend radially outward from the end of the connection column 221 near the second ventilation hole 210b and to close the mounting through hole 233.

The trim 223 may be disposed to extend radially outward from an end of the connection post 221 adjacent to the first vent hole 210a and limit movement of the valve body 220 to a direction adjacent to the second vent hole 210b. The number of the locking portions 223 may be plural and may be uniformly distributed in the circumferential direction of the connection column 221.

The mounting plate 231 may be provided with an annular projection 234. An annular protrusion 234 may be provided at the periphery of the mounting through-hole 233 and be bulged in a direction close to the sealing portion 222.

The projection of the annular protrusion 234 in the extending direction along the connecting column 221 may fall completely into the sealing part 222, and the projected area is smaller than the projected area of the sealing part 222 in that direction, so that the sealing part 222 opens the mounting through hole 233.

In some further embodiments, the check valve 200 may also include two seal rings 240. Two sealing rings 240 may be respectively disposed between both ends of the bracket 230 and the housing to improve the sealing property of the housing and prevent the movement of the bracket 230 in the radial direction of the mounting through-hole 233 by using the frictional force of the sealing rings 240.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described in detail herein, many other variations and modifications can be made to the invention consistent with the principles of the invention, which may be directly determined or derived from the disclosure of the present invention, without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.

Claims (10)

1. A check valve, comprising:

the shell is provided with a first vent hole and a second vent hole which are opposite;

a valve body disposed in the housing and configured to allow gas to flow from the first vent hole to the second vent hole and to prohibit gas from flowing from the second vent hole to the first vent hole; and

and the support is arranged in the shell and used for fixing the valve body.

2. The one-way valve of claim 1, wherein the housing comprises:

a cylinder body formed with an installation opening, one of the first vent hole and the second vent hole being provided in a side plate of the cylinder body opposite to the installation opening; and

an end cap for closing the mounting opening, the other of the first and second vent holes being provided in the end cap.

3. The one-way valve of claim 2, wherein the housing further comprises:

two installation departments, set up to certainly respectively first air vent with the periphery of second air vent is to keeping away from the barrel with the direction of end cover extends, so that the check valve is connected with the tube coupling.

4. The one-way valve of claim 1, wherein the bracket comprises:

the valve body is clamped in the mounting through hole; and

a plurality of stabilizer blades, set up to certainly the mounting panel respectively to first air vent and second air vent extend, and with the shell is contradicted fixedly.

5. The one-way valve of claim 4, wherein the valve body comprises:

the connecting column is arranged in the mounting through hole;

the sealing part is arranged to extend outwards from the end part of the connecting column close to the second ventilation hole in the radial direction and close the mounting through hole; and

the clamping part is arranged to extend outwards in the radial direction from the end part, close to the first vent hole, of the connecting column, and limits the movement of the valve body in the direction close to the second vent hole.

6. The one-way valve of claim 5,

the mounting plate is provided with an annular bulge, and the annular bulge is arranged at the periphery of the mounting through hole and bulges towards the direction close to the sealing part; and is provided with

The annular bulge is along the projection of the extension direction of the connecting column completely falls into the sealing part, and the projection area is smaller than the projection area of the sealing part in the direction, so that the sealing part is opened to the mounting through hole.

7. The one-way valve of claim 1, further comprising:

and the two sealing rings are respectively arranged between the two ends of the bracket and the shell.

8. A preservation device, comprising:

the preservation box is provided with a storage space;

the air pump is used for exhausting the gas in the storage space; and

the check valve according to any one of claims 1 to 7, connected in series on the suction line between the storage space and the suction pump; wherein the content of the first and second substances,

the check valve is set to enable the gas in the storage space to flow to the air pump through the first vent hole and then through the second vent hole.

9. The freshness retaining device of claim 8, further comprising:

the electronic pressure relief valve is connected in series on the air extraction pipeline and is used for communicating the air extraction pipeline with the ambient environment so as to recover the air pressure of the storage space; wherein the content of the first and second substances,

the electronic pressure relief valve is arranged on the upstream of the one-way valve.

10. The crisper of claim 9, wherein the crisper comprises:

the storage box comprises a main body and a plurality of storage boxes, wherein the main body comprises a partition plate extending horizontally, an upper peripheral plate extending upwards from the peripheral edge of the partition plate, and a lower peripheral plate extending downwards from the peripheral edge of the partition plate, the partition plate and the upper peripheral plate form a storage space in a surrounding mode, and the partition plate and the lower peripheral plate form an electric appliance space in a surrounding mode; and

the bottom plate is arranged at the opening of the electric appliance space and used for sealing the electric appliance space; wherein the content of the first and second substances,

the air pump, the one-way valve and the electronic pressure relief valve are arranged in the electric appliance space; and is provided with

The partition plate is provided with an air exhaust hole penetrating through the partition plate, and the air exhaust hole is communicated with the air exhaust pump through the air exhaust pipeline.

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