CN109703911A - A kind of adjustable constant pressure automatic vacuum freshness-retaining tank of negative pressure - Google Patents
A kind of adjustable constant pressure automatic vacuum freshness-retaining tank of negative pressure Download PDFInfo
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- CN109703911A CN109703911A CN201910064081.4A CN201910064081A CN109703911A CN 109703911 A CN109703911 A CN 109703911A CN 201910064081 A CN201910064081 A CN 201910064081A CN 109703911 A CN109703911 A CN 109703911A
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- Prior art keywords
- negative pressure
- vacuum
- pressure
- tank
- upper casing
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
- B65D81/20—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vacuum Packaging (AREA)
Abstract
The present invention proposes that a kind of adjustable constant pressure automatic vacuum freshness-retaining tank of negative pressure, including upper cover, tank body, upper cover are fastened on top of the tank；Upper cover is equipped with vacuum pump, power supply, the control circuit equipped with vacuum pump load current detection circuit, negative pressure switch, pressure relief mechanism, sealing rubber ring；Tank body is material-putting space；When upper cover is fastened on tank body, sealing joint strip makes airtight space of the tank body as a vacuum-pumping；Control circuit drives air pump pumping, and vacuum pump load current detection circuit starts in setting vacuum degree upper limit stopping vacuum pump pumping, negative pressure switch detection vacuum degree lower limit, and circulation is so that vacuum tank remains vacuum state in power supply maintenance period；Freshness date of the food in vacuum tank meets the food storage demand of people compared with extending under normal state；Using simple, only 2-3 component for a user, upper cover fasten can automatic or manual start vacuum suction, a key discharges vacuum, and the tank body for placing food materials is single component, without other accessories, easy cleaning.
Description
Technical field
The present invention relates to vacuum fresh-retaining container technical field, especially a kind of adjustable constant pressure automatic vacuum of negative pressure is fresh-keeping
Tank.
Background technique
People have always food fresh-keeping a higher demand, and vacuum freshness retaining as a kind of physical fresh-keeping method then by
To the favor of people.Designing conventional vacuum container that is good again, manufacturing precision again can always pass at any time and slowly reduce vacuum
Degree, people need a kind of container that is low-cost, being capable of long-term self―sustaining vacuum, Lai Shixian food fresh-keeping；Because common,
Need to be evacuated, take, clean it is more simple.Meanwhile it is also desirable that different vacuum degrees is set for different food, routinely
Method must be provided with multiple negative pressure switches or B/P EGR Back Pressure Transducer EGR, however, the former volume is big, the latter is at high cost.In view of this, special
It is proposed the present invention.
Summary of the invention
The purpose of the present invention is to solve disadvantages existing in the prior art, thus the adjustable perseverance of a kind of negative pressure proposed
Automatic vacuum freshness-retaining tank is pressed, is easy to use, it being capable of self―sustaining vacuum degree, and easy cleaning for a long time.
The present invention specifically adopts the following technical scheme that realization:
A kind of adjustable constant pressure automatic vacuum freshness-retaining tank of negative pressure, including upper cover, tank body, the upper cover are fastened on the tank body
Top is equipped with sealing rubber ring, so that the tank body is formed as airtight space, set in the upper cover between the upper cover and the tank body
There are vacuum pump, power supply, negative-pressure detection device, control circuit and pressure relief device, the vacuum pump, power supply and negative-pressure detection device are equal
It is connect with the control circuit.
Preferably, the negative-pressure detection device is negative pressure switch or B/P EGR Back Pressure Transducer EGR.
Preferably, the upper cover includes upper casing and inner cover, the upper casing is set in described and covers, the upper casing and inner cover
It is tightly connected, the sealing rubber ring, the vacuum pump, power supply, control circuit is equipped between the inner cover outer rim and the tank body
And pressure relief device is set to one upper side of inner cover, it is described in cover equipped at least one venthole, the vacuum pump, negative pressure inspection
It surveys device and pressure relief device connect with the venthole or connected by threeway.
Preferably, the pressure relief device includes pressure relief press button, O-ring, compression bar and spring, the O-ring and spring divide
It is not placed on the both ends of the compression bar, the pressure relief press button is placed on the outside of compression bar, and the O-ring is withstood on described let out by the spring
Pressure device exit.
Preferably, the pressure relief device is solenoid valve, the solenoid valve is electrically connected with control circuit.
Preferably, there is the vacuum pump check function or the air pump front end to be equipped with check-valves, the detection of negative pressure
Mechanism is negative pressure switch or B/P EGR Back Pressure Transducer EGR.
Preferably, the upper cover is additionally provided with tegillum, the upper casing is exported equipped with upper casing, and the upper casing exports exterior bottom
Equipped with upper cushion rubber, the tegillum is fastened in the upper casing outlet, and the upper cushion rubber is adapted to the tegillum, so that the tegillum
With it is airtight described in upper casing；The inner cover side, which corresponds to upper casing outlet and is equipped with inner cover, to be exported, the inner cover outlet with it is described on
Shell outlet connection is airtight by middle cushion rubber.
Preferably, the tegillum side is equipped with magnet, the control circuit is equipped with hall sensing switch or tongue tube,
Hall sensing switch or tongue tube are electrically connected connection control circuit.
Preferably, the upper casing is leaned on into the tegillum side, it is equipped with microswitch or optoelectronic switch, the tegillum casing pressure
The microswitch or optoelectronic switch are pressed when the upper casing, the microswitch or optoelectronic switch are electrically connected the control electricity
Road.
Preferably, the upper cover further includes charcoal box cover, the charcoal box cover is removably set to below the inner cover.
Constant pressure automatic vacuum freshness-retaining tank provided by the invention, the beneficial effect is that: container begins in power supply maintenance period
Vacuum state is kept eventually, extends freshness date of the food in vacuum tank；Negative pressure is adjustable；Integrated level is high, for a user component
It is few, using simple, can automatic or one-key start vacuum, be automatically stopped, self―sustaining, a key release vacuum；The tank body of glove
Upper non-assembly, easy cleaning.
Detailed description of the invention
Fig. 1 is the component diagram of constant pressure automatic vacuum freshness-retaining tank embodiment 1 of the present invention；
Fig. 2 is the stereogram exploded view of constant pressure automatic vacuum freshness-retaining tank embodiment 1 of the present invention；
Fig. 3 is the inner cover air circuit connection schematic diagram of constant pressure automatic vacuum freshness-retaining tank embodiment 1 of the present invention；
Fig. 4 is the pressure relief device schematic diagram of constant pressure automatic vacuum freshness-retaining tank embodiment 1 of the present invention；
Fig. 5 is the component diagram of constant pressure automatic vacuum freshness-retaining tank embodiment 6 of the present invention；
Fig. 6 is the stereogram exploded view of constant pressure automatic vacuum freshness-retaining tank embodiment 6 of the present invention；
Fig. 7 is the inner cover venthole schematic diagram of constant pressure automatic vacuum freshness-retaining tank embodiment 6 of the present invention；
Fig. 8 is the operating current and vacuum degree and extraction flow spirogram of vacuum pump；
Fig. 9 is vacuum pump load current detection circuit schematic diagram of the invention；
Figure 10 is this bright circuit block diagram.
Specific embodiment
To further illustrate that each embodiment, the present invention are provided with attached drawing.These attached drawings are that the invention discloses one of content
Point, mainly to illustrate embodiment, and the associated description of specification can be cooperated to explain the operation principles of embodiment.Cooperation ginseng
These contents are examined, those of ordinary skill in the art will be understood that other possible embodiments and advantages of the present invention.In figure
Component be not necessarily to scale, and similar component symbol is conventionally used to indicate similar component.
Now in conjunction with the drawings and specific embodiments, the present invention is further described.
Embodiment 1
As shown in Figure 1, the present embodiment provides a kind of adjustable constant pressure automatic vacuum freshness-retaining tank of negative pressure, including upper cover 101, tank
Body 102, upper cover 101 is fastened on 102 top of tank body, and is sealed by sealing rubber ring 103, and tank body 102 is made to be formed as airtight space.
Wherein, as in Figure 2-4, upper cover 101 includes tegillum 104, upper casing 105 and inner cover 106.It is equipped in upper casing 105 upper
Shell outlet 107, upper casing exports 107 outside roots and is equipped with upper cushion rubber 108；Tegillum 104 is made of transparent or semitransparent material, fastens
Above upper casing outlet 107, side is equipped with magnet 109, and upper cushion rubber 108 adapts to upper casing outlet 107 and tegillum 104, so that small
Lid 104 is able to airtight closing upper casing outlet 107；Sealing rubber ring 103 is equipped on the outside of inner cover 106, sealing rubber ring 103 adapts to interior
The outside of lid 106 and 102 oral area of tank body, so as to be able to airtight insertion upper casing interior and airtight 102 mouthfuls of closed tank for inner cover 106
Portion；106 side of inner cover corresponds to and is equipped with inner cover outlet 110 at upper casing outlet 107, sets at inner cover outlet 110 and upper casing outlet 107
There is middle cushion rubber 111, middle cushion rubber 111 adapts to upper casing outlet 107 and inner cover outlet 110, so that upper casing 101 and inner cover 106 are going out
It is airtight at mouthful.
Battery 112, vacuum pump 113, control circuit 114 and pressure relief device 115 are equipped with above 106 other side of inner cover, it is interior
Be additionally provided with two ventholes 116 on lid 106, control circuit 114 be equipped with power switch, charge port, hall sensing switch 118 and
Negative pressure switch 117.Hall sensing switch 118 is set near the magnet 106 on tegillum 104, battery 112, vacuum pump 113 and control
Circuit 114 is electrically connected, 117 air circuit connection venthole 116 of vacuum pump 113 and negative pressure switch, vacuum pump 113 with check function or
Check-valves (not shown) is equipped in vacuum pump front end.
Pressure relief device includes pressure relief press button 122, O-ring 119, compression bar 120, spring 121, and O-ring 119 and spring 121 divide
It is not placed on the both ends of compression bar 120, pressure relief press button 122 is placed on the outside of compression bar 120, and O-ring 119 is withstood on pressure release and filled by spring 121
Exit is set, keeps pressure relief device exit airtight.
It can be seen that the output gas of vacuum pump referring to the operating current and vacuum degree and extraction flow spirogram of 8 vacuum pump of attached drawing
Body flow is stepping up and gradually reduce with negative pressure of vacuum degree, the operating power of vacuum pump from when starting to work to maximum
Power points is to be stepped up, and reaches being stepped up and start to gradually reduce, two sections with negative pressure of vacuum degree after maximum power point
Broken line is close to linearly.
In the course of work, detection flows through the current-limiting resistance circuit of vacuum pump electric current, according to known Fig. 8, main control MCU inspection
The electric current ADC sampled value and supply voltage ADC sampled value measured, can calculate vaccum pump motor output power value, restore true
Empty pump motor is from the change curve for starting starting back loading gas vacuum vacuum degree, and according to known Fig. 8, main control MCU is detected
Correspondence vaccum pump motor output power value carry out the anti-negative pressure of vacuum degree for pushing away load, reach closed when preset negative pressure of vacuum is spent it is electric
Source, realization are automatically stopped.
As shown in figs. 9-10, control circuit includes: main control MCU and the vacuum pump load current connecting with main control MCU inspection
Slowdown monitoring circuit；Control circuit is additionally provided with voltage detecting circuit, and whether detectable battery capacity reaches lower limit, can have prompt user timely
Charging and parameter compensation use；Charging input interface, vacuum pump interface and driving circuit are additionally provided in control circuit, vacuum pump is born
Current detection circuit, electricity and gear indicator light, buzzer and driving circuit, key switch, UART communication interface, battery is carried to fill
Fulgurite manages circuit, battery protecting circuit；Key switch can be equipped with multiple and different gears, corresponding different predetermined vacuum degree；It is described
Electricity and gear indicator light can carry out battery capacity indication and operation range instruction and setting vacuum pump works in different vacuum
Vacuum degree mode；Buzzer and driving circuit can provide good man-machine interaction experience；UART host computer communication interface circuit
Output interaction and the Function Extension of operational data may be implemented；Electric power management circuit includes battery charging management circuit, an electricity
Circuit and lithium battery are protected in pond, prevent the protection of battery crossed charge and discharge and output overcurrent, realize to battery and operating circuit.
The constant pressure automatic vacuum freshness-retaining tank of the present embodiment will need fresh-keeping food to be packed into tank body when in use, will be upper
Lid is fastened on tank body, is powered on, and tegillum is fastened on by selection preset different negative pressure gears (negative pressure high-value) when dispatching from the factory
Upper casing outlet, magnet trigger hall sensing switch, vacuum pump work；Since sealing rubber ring makes inner cover and tank body airtight, middle glue
For circle so that inner cover and upper casing are airtight, upper cushion rubber makes tegillum and upper casing airtight, and entire tank body becomes a closed vacuum cavity；
Vacuum pump is extracted out the intracorporal air of tank by venthole, and external pressure compresses entire upper cover；Control circuit detects negative pressure
It is powered off after upper limit value, vacuum pump stops working, and vacuum pump or check-valves with check function prevent extraneous gas from refunding tank body, interior
Portion forms vacuum.
After a period of time, vacuum degree can be gradually reduced, negative pressure switch powers on after detecting negative pressure lower limit value, vacuum
Repeated work is pumped, vacuum degree rises to the upper limit and stops pumping；So circulation is so that vacuum degree is maintained at setting for a long time in tank body
Section.
When needing to take out food, pressure relief press button is pressed, O-ring leaves pressure relief device outlet, and airtight conditions release, external empty
Gas enters, and extracts tegillum, tilts tank body, and food is poured out from exit.
Embodiment 2
Difference from Example 1 is that a negative pressure high-value is only preset in factory, and use is more succinct, only needs to connect
Power supply, buckling tegillum can Automatic-bleeding, automatic constant-pressure.
Embodiment 3
Difference from Example 1 is that pressure relief device is a solenoid valve, and electromagnetic valve circuit connects control circuit, gas circuit
Venthole is connected, it is more succinct compared with embodiment 2 on, it realizes key pumping and deflates.
Embodiment 4
Difference from Example 1 is, does not include hall sensing and switchs, and after tegillum is packed into upper casing outlet, opens manually
Work can be evacuated by opening power switch.
Embodiment 5
The difference is that, upper cover is additionally provided with dismountable charcoal box cover (being located at below inner cover), and charcoal box cover gathers with example 1
Air hole, the functional materials such as built-in active carbon, desiccant, zeolite realize further fresh-keeping function.
Embodiment 6
As illustrated in figs. 5-7, the present embodiment provides the adjustable constant pressure automatic vacuum freshness-retaining tanks of another negative pressure, including upper cover
201, tank body 202, upper cover 201 is fastened on 202 top of tank body, and is sealed by sealing rubber ring 203, and tank body 202 is made to be formed as gas
Close space.Upper cover 201 includes upper casing 204, inner cover 205, and sealing rubber ring 203 adapts to 205 outside of inner cover and 202 oral area of tank body,
So that inner cover 205 is able to airtight 202 oral area of closed tank.Battery 206, vacuum pump 207, control electricity are equipped with above inner cover 205
Road 208, solenoid valve 209, set that there are three ventholes 210 on inner cover 205.Control circuit 208 be equipped with power switch, charge port,
Negative pressure switch 211, battery 206 and air pump 207 are electrically connected with control circuit 208, vacuum pump 207, negative pressure switch 211 and electromagnetism
The equal air circuit connection venthole 210 of valve 209,207 front end of vacuum pump is additionally provided with check-valves (not shown).Charcoal box 212 is removably set
In 205 lower section of inner cover, gather air hole on charcoal box 212.
The constant pressure automatic vacuum freshness-retaining tank of the present embodiment, in use, fresh-keeping food will be needed to be packed into tank body, by upper cover
It is fastened on tank body, is powered on, vacuum pump work；Since sealing rubber ring makes inner cover and tank body airtight, entire tank body becomes one
A closed vacuum cavity；Vacuum pump is extracted out the intracorporal air of tank by venthole, and external pressure compresses entire upper cover；Control
Circuit processed powers off after detecting negative pressure upper limit value, and vacuum pump stops working, and vacuum pump or check-valves with check function prevent outer
Portion's gas refunds tank body, and inside forms vacuum.After a period of time, vacuum degree can be gradually reduced, negative pressure switch detects negative pressure
Power on after lower limit value, vacuum pump repeated work, so circulation is so that vacuum degree is maintained at the section of setting for a long time in tank body.
If you need to strengthen fresh-keeping effect, charcoal box is removed, active carbon, desiccant etc. are put in charcoal box, inner cover is reinstalled, can further be protected
Hold the intracorporal drying of tank；
When needing to take out food, startup power supply, solenoid valve are opened, and gas circuit is connected inside and outside tank body, and outside air enters, airtight
Status releasing, taking out upper cover can be taken off food.
Embodiment 7
Difference from Example 6 is that pressure relief device is using the pressure relief device in embodiment 1.
In embodiment 1-7, diversified forms are can be used in control circuit, if can according to vacuum pump load current detection circuit or
The start and stop of the vacuum degree control vacuum pump of person's negative pressure switch feedback, such as double negative pressure switch control vacuum degrees or more can be used
B/P EGR Back Pressure Transducer EGR control start and stop can also be used in the start and stop of limit, and single negative pressure switch detection vacuum degree lower limit+circuit detection also can be used
Air pump is evacuated to the current control start and stop of the vacuum degree setting upper limit.
As shown in Figure 10, control circuit includes main control module, and main control module periphery is connected with touch key-press, negative pressure switch connects
Mouth, vacuum pump driving circuit, load current detection circuit, battery protecting circuit, charge management circuit and electricity and work instruction
Lamp and buzzer.
Compared with prior art, the vacuum fresh-keeping pot of the application remains vacuum state in power supply maintenance period, eats
Freshness date of the object in container can extend；Vacuum degree (negative pressure value) is adjustable；Only have 2-3 portion's (group) part for users, makes
With simple, close one key of lid automatic or manual and vacuumize, be automatically stopped, a key discharges vacuum；The tank body of food is held without accessory, side
Just it cleans.
Although specifically showing and describing the present invention in conjunction with preferred embodiment, those skilled in the art should be bright
It is white, it is not departing from the spirit and scope of the present invention defined by the appended claims, it in the form and details can be right
The present invention makes a variety of changes, and is protection scope of the present invention.
Claims (10)
1. a kind of adjustable constant pressure automatic vacuum freshness-retaining tank of negative pressure, which is characterized in that including upper cover, tank body, the upper cover is fastened
It is equipped with sealing rubber ring between the top of the tank, the upper cover and the tank body, so that the tank body is formed as airtight space, institute
It states and is equipped with vacuum pump, power supply, negative-pressure detection device, control circuit and pressure relief device, the vacuum pump, power supply and negative pressure in upper cover
Detection device is connect with the control circuit.
2. the adjustable constant pressure automatic vacuum freshness-retaining tank of a kind of negative pressure according to claim 1, it is characterised in that: the negative pressure
Detection device is negative pressure switch or B/P EGR Back Pressure Transducer EGR.
3. the adjustable constant pressure automatic vacuum freshness-retaining tank of a kind of negative pressure according to claim 1, it is characterised in that: the control
The vacuum pump load current detection circuit that circuit is equipped with main control MCU and connect with main control MCU, detection flow through vacuum pump electric current
Current-limiting resistance circuit calculate the anti-vacuum for pushing away load by detection electric current ADC sampled value and supply voltage ADC sampled value and bear
Pressure degree reaches when preset negative pressure of vacuum is spent and closes power supply, and realization is automatically stopped.
4. a kind of adjustable constant pressure automatic vacuum freshness-retaining tank of negative pressure according to claim 2-3, it is characterised in that: on described
Lid includes upper casing and inner cover, and the upper casing is set in described and covers, and the upper casing and inner cover are tightly connected, the inner cover outer rim with
The sealing rubber ring is equipped between the tank body, the vacuum pump, power supply, control circuit and pressure relief device are set to the inner cover one
Upper side, it is described in cover equipped at least one venthole, the vacuum pump, negative-pressure detection device and pressure relief device with it is described
Venthole connection is connected by threeway.
5. the adjustable constant pressure automatic vacuum freshness-retaining tank of a kind of negative pressure according to claim 4, it is characterised in that: the pressure release
Device includes pressure relief press button, O-ring, compression bar and spring, and the O-ring and spring are respectively sleeved in the both ends of the compression bar, described
Pressure relief press button is placed on the outside of compression bar, and the O-ring is withstood on the pressure relief device exit by the spring.
6. the adjustable constant pressure automatic vacuum freshness-retaining tank of a kind of negative pressure according to claim 4, it is characterised in that: the pressure release
Device is solenoid valve, and the solenoid valve is electrically connected with control circuit.
7. according to a kind of any adjustable constant pressure automatic vacuum freshness-retaining tank of negative pressure of claim 5-6, it is characterised in that: institute
It states vacuum pump and is equipped with check-valves with check function or the air pump front end, the detection of negative pressure mechanism is negative pressure switch or negative pressure
Sensor.
8. the adjustable constant pressure automatic vacuum freshness-retaining tank of a kind of negative pressure according to claim 7, it is characterised in that: the upper cover
Be additionally provided with tegillum, the upper casing is exported equipped with upper casing, and upper casing outlet exterior bottom is equipped with upper cushion rubber, the tegillum fasten with
In the upper casing outlet, the upper cushion rubber is adapted to the tegillum, so that airtight described in the tegillum and upper casing；The tegillum side
Face is equipped with magnet, and the control circuit is equipped with hall sensing switch or tongue tube, the hall sensing switch or tongue tube electricity
Connect control circuit；The inner cover side corresponds to the upper casing outlet and is equipped with inner cover outlet, the inner cover outlet and the upper casing
Outlet connection is airtight by middle cushion rubber.
9. the adjustable constant pressure automatic vacuum freshness-retaining tank of a kind of negative pressure according to claim 8, it is characterised in that: the upper casing
By being equipped with microswitch or optoelectronic switch into the tegillum side, the tegillum set presses the fine motion when being pressed on the upper casing
Switch or optoelectronic switch, the microswitch or optoelectronic switch are electrically connected the control circuit.
10. according to a kind of any adjustable constant pressure automatic vacuum freshness-retaining tank of negative pressure of claim 8-9, it is characterised in that:
The upper cover further includes charcoal box cover, and the charcoal box cover is removably set to below the inner cover.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910064081.4A CN109703911A (en) | 2019-01-23 | 2019-01-23 | A kind of adjustable constant pressure automatic vacuum freshness-retaining tank of negative pressure |
| PCT/CN2020/071832 WO2020151526A1 (en) | 2019-01-23 | 2020-01-13 | Constant-pressure automatic vacuum preservation tank with adjustable negative pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910064081.4A CN109703911A (en) | 2019-01-23 | 2019-01-23 | A kind of adjustable constant pressure automatic vacuum freshness-retaining tank of negative pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109703911A true CN109703911A (en) | 2019-05-03 |
Family
ID=66261703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910064081.4A Pending CN109703911A (en) | 2019-01-23 | 2019-01-23 | A kind of adjustable constant pressure automatic vacuum freshness-retaining tank of negative pressure |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109703911A (en) |
| WO (1) | WO2020151526A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020151526A1 (en) * | 2019-01-23 | 2020-07-30 | 林万顷 | Constant-pressure automatic vacuum preservation tank with adjustable negative pressure |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040099332A1 (en) * | 2002-11-26 | 2004-05-27 | Kieck Timothy Adam | Appliance for the universal storage of baked goods with a built in vacuum pump |
| CN103466203B (en) * | 2013-06-21 | 2015-11-25 | 苏州盟通利机电设备有限公司 | Full-automatic vacuum preservation box and control method thereof |
| CN205525840U (en) * | 2015-10-16 | 2016-08-31 | 汤栋 | Vacuum preservation box |
| GB2561576A (en) * | 2017-04-19 | 2018-10-24 | Meng Teo Khim | Lid for a container |
| CN209758030U (en) * | 2019-01-23 | 2019-12-10 | 林万顷 | Negative pressure adjustable constant pressure automatic vacuum fresh-keeping tank |
| CN109703911A (en) * | 2019-01-23 | 2019-05-03 | 林万顷 | A kind of adjustable constant pressure automatic vacuum freshness-retaining tank of negative pressure |
-
2019
- 2019-01-23 CN CN201910064081.4A patent/CN109703911A/en active Pending
-
2020
- 2020-01-13 WO PCT/CN2020/071832 patent/WO2020151526A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020151526A1 (en) * | 2019-01-23 | 2020-07-30 | 林万顷 | Constant-pressure automatic vacuum preservation tank with adjustable negative pressure |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020151526A1 (en) | 2020-07-30 |
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