CN209360394U - A kind of vacuum flask liner cooling device - Google Patents
A kind of vacuum flask liner cooling device Download PDFInfo
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- CN209360394U CN209360394U CN201821919623.9U CN201821919623U CN209360394U CN 209360394 U CN209360394 U CN 209360394U CN 201821919623 U CN201821919623 U CN 201821919623U CN 209360394 U CN209360394 U CN 209360394U
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- fan
- cover assembly
- movable valve
- intake stack
- exhaust pipe
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Abstract
A kind of vacuum flask liner cooling device, including cover assembly, liner and pedestal, pedestal are provided with fan and intake stack for generating air-flow, and pedestal corresponds to fan side and offers air inlet hole, and fan and intake stack are cooperatively connected and the two is located at liner side；Cover assembly is provided with exhaust pipe, exhaust pipe and intake stack are interconnected and the two at interconnected place is arranged with movable valve module, exhaust pipe is provided with the air inlet being interconnected with liner, venthole, the plunger that cover assembly is provided with and movable valve module contacts with each other；Cover assembly is provided with the key for controlling fan, and cover assembly makees closing lid movement and drives plunger contact and pressing activity valve module, so that exhaust pipe and intake stack are interconnected, wherein the venthole of cover assembly exhaust outlet and exhaust pipe is interconnected.Liner boiled water temperature can be effectively reduced in the utility model.
Description
Technical field
The utility model relates to a kind of household electrical appliance, specifically a kind of vacuum flask liner cooling device.
Background technique
Common vacuum flask is after water boiling currently on the market, and the boiling water of liner is generally nature and slowly turns cold, Huo Zheyong
Fan blows the side or bottom surface of liner, and to reduce liner boiled water temperature, but boiling water cooling effect is unobvious, the cooling waiting time
It is long.Chinese patent literature CN205162857 U discloses a kind of electric water bottle to cool down automatically, including water in 2016.04.20
Case, heating device, control circuit board, discharging device and water pump, between water tank and water pump be equipped with the first water supplying pipe, water pump with
The second water supplying pipe is equipped between discharging device, discharging device includes control valve and faucet, and control valve is equipped with water inlet, circulation port
With water outlet and valve switch, water inlet is connected to the water pump by the second water supplying pipe, and circulation port is connected to water tank, valve
Switch opening and closing water outlet or circulation port.The utility model is when needing fast cooling, by the rotation of valve switch, makes its closing
Water outlet, the circulation port of control valve is connected to water tank at this time, i.e., then the water inside water tank will be flowed again by water pump from circulation port
Enter in water tank, form cyclic water channel, by cyclic water channel the hot water in water tank is constantly flowed, until obtaining required temperature
Until water, therefore cooling time is long.Therefore, it is further improved.
Utility model content
The purpose of the utility model is to provide a kind of structure setting is reasonable, cost of manufacture is lower, and cooling effect is preferable, has
Effect reduces vacuum flask liner boiled water temperature, the vacuum flask liner cooling device of boiling water cooling time is saved, to overcome the prior art
In shortcoming.
By a kind of vacuum flask liner cooling device that this purpose designs, including cover assembly, liner and pedestal, the pedestal
It is provided with the fan and intake stack for generating air-flow, pedestal corresponds to fan side and offers air inlet hole, fan and blast pipe
Road is cooperatively connected and the two is located at liner side；Cover assembly is provided with exhaust pipe；Exhaust pipe and intake stack are mutual
Connectivity part is arranged with the movable valve module for obstruction；Exhaust pipe is provided with the air inlet being interconnected with liner, venthole,
The plunger that cover assembly is provided with and movable valve module contacts with each other；Cover assembly, which uncaps to act, drives plunger to be detached from moving valve
Component；Activity valve module obstruction exhaust pipe and intake stack, which are interconnected, when uncapping locates；Cover assembly is provided with for controlling
The key of fan, cover assembly make the movable valve plug that closing lid movement drives plunger contact and pressing activity valve module, movable valve plug
Be interconnected the lower section movement located towards exhaust pipe and intake stack, so that exhaust pipe and intake stack are interconnected, wherein
Cover assembly is provided with exhaust outlet, and the venthole of exhaust outlet and exhaust pipe is interconnected.When cover assembly is in the open state
When, the interconnected place of movable valve module obstruction exhaust pipe and intake stack is prevented when adding water, water by intake stack into
Enter in fan；When cover assembly makees the movable valve plug that closing lid movement drives plunger contact and pressing activity valve module, activity valve group
At the interconnected place of exhaust pipe and intake stack downward displacement, exhaust pipe and intake stack occur for the movable valve plug of part
It is interconnected；After the water boiling of liner, the key of fan rotation is controlled by pressing cover assembly, fan is entered the wind by pedestal
Hole generates air-flow, and air-flow sequentially enters in intake stack, movable valve module and exhaust pipe；Wherein the air-flow of exhaust pipe passes through
Air inlet enters in liner, so that cooling liner boiling water surface, is cooled to boiling water by transmitting after the boiling water on liner surface is cooling
It is internal；Exhaust pipe air-flow enters the hot steam for after liner while driving liner, and air-flow passes through cover assembly after driving hot steam
Exhaust outlet be discharged to outside vacuum flask.
The cover assembly includes the middle layer mutually assembled with liner, is controlled in the key setting in middle level of fan, described
Movable valve module includes movable valve plug, compressed spring, moving valve core retainer plate and sealed silicon gum cover, moving valve core retainer plate and sealed silicon gum cover
It is respectively sleeved on middle layer；Compressed spring is set on the outside of movable valve plug and the two is located in moving valve core retainer plate；Moving valve
Core at least partially runs through moving valve core retainer plate, movable valve plug one end and the mutual fitting of sealed silicon gum cover；It is dynamic that cover assembly makees closing lid
Make to drive plunger contact and press movable valve plug, movable valve plug moves down in moving valve core retainer plate, and movable valve plug exists in turn
Compressed spring is squeezed in moving valve core retainer plate.When cover assembly in the open state, plunger and movable valve plug separation, movable valve plug
It is bounce back into sealed silicon gum cover by compressed spring, movable valve plug and the sealing cooperation of sealed silicon gum cover are prevented when adding water, water is not
It can be covered and be entered in intake stack by sealed silicone, prevented water from contacting fan, cause fan to damage, it is ensured that fan normal use
Working life.
The movable valve plug is provided with the cylinder through moving valve core retainer plate bottom end, and cylinder is provided with positioning ring, compressed spring
It is set on the outside of cylinder by positioning ring limit.Movable valve plug is divided into two parts with positioning ring, and part more than positioning ring is (i.e. living
Movable valve plug top) and the mutual fitting of sealed silicon gum cover, positioning ring part below (i.e. cylinder) be arranged with compressed spring.
The middle layer is provided with hollow connecting column, and connecting column one end is arranged with sealed silicon gum cover, the connecting column other end and
Moving valve core retainer plate is interference fitted each other, and movable valve plug top and the mutual fitting of sealed silicon gum cover, movable valve plug pass through sealed silicone
Set limit is in moving valve core retainer plate and connecting column.When installation, first movable valve plug and reset spring are mounted in moving valve core retainer plate,
Sealed silicon gum cover is linked in movable valve plug top again, then installation set, the moving valve core retainer plate other end are inserted into moving valve core retainer plate one end
On being arranged on the outside of connecting column in middle level, then sealed silicone is inserted in connecting column.
The sealed silicone set is provided with mounting hole, and movable valve plug top insertion mounting hole is interior and the two seals match each other
It closes；Cover assembly makees closing lid movement and drives plunger penetrating mounting holes, and plunger penetrating mounting holes contact and press movable valve plug in turn.
The cover assembly further includes cover and calms the anger plate, and plunger setting is being calmed the anger on plate, cover, calm the anger plate and middle layer it
Between gap form exhaust pipe, cover is provided with exhaust outlet, and exhaust outlet and exhaust pipe are interconnected, the cover assembly
Air inlet, which is separately positioned on, calms the anger on plate and middle layer, in the venthole setting in middle level of cover assembly.
The activity valve module further includes moving valve core retainer plate interconnected and installation set, installation set one end and intake stack
It is interference fitted each other, the installation set other end and moving valve core retainer plate one end are interference fitted each other.
The pedestal is provided with mounting bracket, and fan is mounted in mounting bracket, if mounting bracket corresponds to fan and is provided with
Dry air inlet, is connected separately with fan silica gel between fan and intake stack, fan silica gel one end is set in mounting bracket,
The fan silica gel other end and intake stack are interference fitted each other.
The fan silica gel is provided with installation base and connecting tube, and installation base is provided with annular groove, and mounting bracket is set
It is equipped with plug side, annular groove is set on plug side, and connecting tube and intake stack are interference fitted each other.
After the water boiling of the utility model vacuum flask liner, the key of control fan rotation, the air-flow that fan generates are pressed
Entered in exhaust pipe by intake stack, the air-flow in exhaust pipe enters liner, so that the boiling on air-flow cooling liner surface
Water is cooled to inside boiling water after the boiling water on liner surface is cooling by transmitting, and the air-flow in exhaust pipe enters after liner together
When drive the hot steam of liner, hot steam is discharged to outside vacuum flask finally by exhaust outlet, effective cooling liner boiled water temperature, section
User's cooling boiling water time is saved, user's life efficiency is improved.
Detailed description of the invention
Fig. 1 is the assembly decomposition texture schematic diagram of an embodiment of the present invention vacuum flask.
Fig. 2 is the cover assembly cover of an embodiment of the present invention vacuum flask and plate opening state sectional view of calming the anger.
Fig. 3 is the enlarged drawing in Fig. 2 at A.
Fig. 4 is the enlarged drawing in Fig. 2 at B.
Fig. 5 is the perspective view that an embodiment of the present invention pedestal is provided with fan, intake stack.
Fig. 6 is an embodiment of the present invention vacuum flask schematic diagram of internal structure.
Fig. 7 is the enlarged drawing in Fig. 6 at C.
Fig. 8 is the enlarged drawing in Fig. 6 at D.
Fig. 9 is the enlarged drawing in Fig. 6 at E.
Figure 10 is the assembly decomposition texture schematic diagram of an embodiment of the present invention mounting bracket and fan silica gel.
Figure 11 is that an embodiment of the present invention activity valve module and intake stack 5 assemble decomposition texture schematic diagram.
Figure 12 is the enlarged drawing in Fig. 6 at F.
Figure 13 is to generate air-flow side in an embodiment of the present invention vacuum flask to enter the structural schematic diagram in liner.
Figure 14 is the perspective view of an embodiment of the present invention vacuum flask.
In figure, 1 is cover assembly, and 1.1 middle layers, 1.2 be connecting column, and 1.3 be cover, and 1.4 be plate of calming the anger, and 1.5 be exhaust
Mouthful, 2 be liner, and 3 be pedestal, and 3.1 be mounting bracket, and 3.2 be air inlet, and 3.3 be plug side, and 4 be fan, and 5 be intake stack,
6 be exhaust pipe, and 7 be movable valve module, and 7.1 be movable valve plug, and 7.2 be compressed spring, and 7.3 be moving valve core retainer plate, and 7.4 be close
Silica gel sheath is sealed, 7.5 be cylinder, and 7.6 be positioning ring, and 7.7 be mounting hole, and 7.8 be installation set, and 8 be air inlet, and 9 be air inlet, 10
It is fan silica gel for plunger, 11,11.1 be installation base, and 11.2 be connecting tube, and 11.3 be annular groove.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and embodiments.
Referring to Fig. 1-Figure 14, a kind of vacuum flask liner cooling device, including cover assembly 1, liner 2 and pedestal 3, pedestal 3
Be provided with the fan 4 and intake stack 5 for generating air-flow, corresponding 4 side of fan of pedestal 3 offers air inlet hole, fan 4 and into
Air piping 5 is cooperatively connected and the two is located at 2 side of liner；Cover assembly 1 is provided with exhaust pipe 6；Exhaust pipe 6 and air inlet
Pipeline 5 is arranged with the movable valve module 7 for obstruction at interconnected place；Exhaust pipe 6 be provided with liner 2 be interconnected
Air inlet 8, venthole 9, the plunger 10 that cover assembly 1 is provided with and movable valve module 7 contacts with each other；Cover assembly 1 is uncapped
Movement drives 10 disengaging activity valve module 7 of plunger；Activity valve module 7 blocks exhaust pipe 6 and mutually interconnects with intake stack 5 when uncapping
Logical place；Cover assembly 1 is provided with the key for controlling fan 4, cover assembly 1 make closing lid movement drive the contact of plunger 10 and by
The movable valve plug 7.1 of pressure activity valve module 7, movable valve plug 7.1 are interconnected the lower section at place towards exhaust pipe 6 and intake stack 5
Mobile, so that exhaust pipe 6 and intake stack 5 are interconnected, wherein cover assembly 1 is provided with exhaust outlet 1.5, exhaust outlet 1.5
It is interconnected with the venthole 9 of exhaust pipe 6.Top is additionally provided with the display screen of display water temperature immediately ahead of this implementation vacuum flask,
Water outlet is provided with below display screen；Cover assembly 1 makees the work that closing lid movement drives plunger 10 to contact and press movable valve module 7
Movable valve plug 7.1, enters the wind deferent 5 at this time and exhaust pipe 6 is interconnected, and vacuum flask carries out work to boil water, and the cold water of liner 2 passes through
After a period of time becomes boiling water, the key of control fan 4 is pressed, fan 4, which starts running, generates air-flow, and air-flow passes through intake stack
5 sequentially enter movable valve module 7, exhaust pipe 6, and the air-flow of exhaust pipe 6 enters the surface of 2 boiling water of liner by air inlet 8,
With the boiling water on 2 surface of cooling liner, it is cooled to inside boiling water after the boiling water on surface is cooling by transmitting, while exhaust pipe 6
Air-flow drive liner 2 hot steam pass sequentially through venthole 9, exhaust outlet 1.5 be discharged vacuum flask outside.Fan 4 generate air-flow into
Direction out is as shown in arrow in Figure 13.
Further, cover assembly 1 includes the middle layer 1.1 mutually assembled with liner 2, the key setting of control fan 4
In middle level on 1.1, the activity valve module 7 includes movable valve plug 7.1, compressed spring 7.2, moving valve core retainer plate 7.3 and sealed silicon
Gum cover 7.4, moving valve core retainer plate 7.3 and sealed silicon gum cover 7.4 are respectively sleeved on middle layer 1.1；Compressed spring 7.2 is set in activity
On the outside of spool 7.1 and the two is located in moving valve core retainer plate 7.3；Moving valve core retainer plate is run through in at least part of movable valve plug 7.1
7.3,7.1 one end of movable valve plug and the mutual fitting of sealed silicon gum cover 7.4；Cover assembly 1 makees closing lid movement and plunger 10 is driven to contact
And movable valve plug 7.1 is pressed, movable valve plug 7.1 moves down in moving valve core retainer plate 7.3, and movable valve plug 7.1 is in turn in work
Compressed spring 7.2 is squeezed in movable valve plug set 7.3.
Further, movable valve plug 7.1 is provided with the cylinder 7.5 through 7.3 bottom end of moving valve core retainer plate, and cylinder 7.5 is set
It is equipped with positioning ring 7.6, compressed spring 7.2 is set in 7.5 outside of cylinder by the limit of positioning ring 7.6.
Further, middle layer 1.1 is provided with hollow connecting column 1.2, and 1.2 one end of connecting column is arranged with sealed silicon gum cover
7.4,1.2 other end of connecting column and moving valve core retainer plate 7.3 are interference fitted each other, 7.1 top of movable valve plug and sealed silicon gum cover 7.4
Mutual fitting, movable valve plug 7.1 are limited in moving valve core retainer plate 7.3 and connecting column 1.2 by sealed silicon gum cover 7.4.
Further, sealed silicon gum cover 7.4 is provided with mounting hole 7.7, and mounting hole 7.7 is inserted on 7.1 top of movable valve plug
Interior and the two seals cooperation each other；Cover assembly 1 makees closing lid movement and drives 10 penetrating mounting holes 7.7 of plunger, and plunger 10 is through peace
Dress hole 7.7 contacts and presses movable valve plug 7.1 in turn.
Further, cover assembly 1 further includes cover 1.3 and plate 1.4 of calming the anger, and the setting of plunger 10 is being calmed the anger on plate 1.4,
Cover 1.3, the gap calmed the anger between plate 1.4 and middle layer 1.1 form exhaust pipe 6, and cover 1.3 is provided with exhaust outlet 1.5, is vented
Mouth 1.5 and exhaust pipe 6 are interconnected, and the air inlet 8 of cover assembly 1, which is separately positioned on, calms the anger on plate 1.4 and middle layer 1.1, on
The setting of venthole 9 of cap assemblies 1 is in middle level on 1.1.
Further, movable valve module 7 further includes moving valve core retainer plate 7.3 interconnected and installation set 7.8, installation set
7.8 one end and intake stack 5 are interference fitted each other, and 7.8 other end of installation set and the interference each other of 7.3 one end of moving valve core retainer plate are matched
It closes.
Further, pedestal 3 is provided with mounting bracket 3.1, and fan 4 is mounted in mounting bracket 3.1, mounting bracket
3.1 corresponding fans 4 are provided with several air inlets 3.2, and fan silica gel 11, wind are connected separately between fan 4 and intake stack 5
Fan 11 one end of silica gel is set in mounting bracket 3.1, and 11 other end of fan silica gel and intake stack 5 are interference fitted each other.
Further, fan silica gel 11 is provided with installation base 11.1 and connecting tube 11.2, and installation base 11.1 is arranged
There is annular groove 11.3, mounting bracket 3.1 is provided with plug side 3.3, and annular groove 11.3 is set on plug side 3.3, connection
Pipe 11.2 and intake stack 5 are interference fitted each other.
The above-mentioned preferred embodiment for the utility model, has been shown and described the basic principles and main features of the utility model
And the advantages of the utility model.Those skilled in the art should be recognized that the present utility model is not limited to the above embodiments, on
It states and only illustrates the principles of the present invention described in embodiment and specification, do not departing from the spirit and scope of the utility model
Under the premise of the utility model also has various changes and improvements, these changes and improvements both fall within claimed it is practical new
Within the scope of type.The utility model requires protection scope is defined by appended claims and its equivalent.
Claims (9)
1. a kind of vacuum flask liner cooling device, including cover assembly (1), liner (2) and pedestal (3), it is characterized in that the bottom
Seat (3) is provided with fan (4) and intake stack (5) for generating air-flow, pedestal (3) correspondence fan (4) side offer into
Air holes, fan (4) and intake stack (5) are cooperatively connected and the two is located at liner (2) side；Cover assembly (1) is provided with exhaust
Pipeline (6)；Exhaust pipe (6) and intake stack (5) are arranged with the movable valve module (7) for obstruction at interconnected place；Row
Feed channel (6) is provided with the air inlet (8) being interconnected with liner (2), venthole (9), and cover assembly (1) is provided with and activity
The plunger (10) that valve module (7) contacts with each other；Cover assembly (1) is provided with the key for controlling fan (4), cover assembly
(1) make the movable valve plug (7.1) that closing lid movement drives plunger (10) to contact and press movable valve module (7), movable valve plug (7.1)
Be interconnected the lower section movement located towards exhaust pipe (6) and intake stack (5), so that exhaust pipe (6) and intake stack (5) phase
Intercommunicated, wherein cover assembly (1) is provided with exhaust outlet (1.5), venthole (9) phase of exhaust outlet (1.5) and exhaust pipe (6)
It is intercommunicated；Cover assembly (1), which uncaps to act, drives plunger (10) disengaging activity valve module (7).
2. vacuum flask liner cooling device according to claim 1, it is characterized in that the cover assembly (1) includes and liner
(2) middle layer (1.1) mutually assembled, in middle level on (1.1), the activity valve module (7) is wrapped for the key setting of control fan (4)
Include movable valve plug (7.1), compressed spring (7.2), moving valve core retainer plate (7.3) and sealed silicon gum cover (7.4), moving valve core retainer plate
(7.3) it is respectively sleeved on middle layer (1.1) with sealed silicon gum cover (7.4)；Compressed spring (7.2) is set in movable valve plug (7.1)
Outside and the two are located in moving valve core retainer plate (7.3)；Moving valve core retainer plate is run through in movable valve plug (7.1) at least part
(7.3), movable valve plug (7.1) one end and sealed silicon gum cover (7.4) mutual fitting；Cover assembly (1) makees closing lid movement and drives column
Plug (10) contacts and presses movable valve plug (7.1), and movable valve plug (7.1) moves down in moving valve core retainer plate (7.3), activity
Spool (7.1) and then extruding compressed spring (7.2) in moving valve core retainer plate (7.3).
3. vacuum flask liner cooling device according to claim 2, it is characterized in that the movable valve plug (7.1) is provided with and runs through
The cylinder (7.5) of moving valve core retainer plate (7.3) bottom end, cylinder (7.5) are provided with positioning ring (7.6), and it is fixed that compressed spring (7.2) passes through
Position ring (7.6), which limits, to be set on the outside of cylinder (7.5).
4. vacuum flask liner cooling device according to claim 2, it is characterized in that the middle layer (1.1) are provided with hollow company
It connects column (1.2), connecting column (1.2) one end is arranged with sealed silicon gum cover (7.4), connecting column (1.2) other end and moving valve core retainer plate
(7.3) it is interference fitted each other, movable valve plug (7.1) top and sealed silicon gum cover (7.4) mutual fitting, movable valve plug (7.1) is logical
Sealing silica gel sheath (7.4) limit is crossed in moving valve core retainer plate (7.3) and connecting column (1.2).
5. vacuum flask liner cooling device according to claim 2, it is characterized in that the sealed silicon gum cover (7.4) is provided with peace
It fills hole (7.7), in movable valve plug (7.1) top insertion mounting hole (7.7) and the two seals cooperation each other；Cover assembly (1) is made
Closing lid movement drives plunger (10) penetrating mounting holes (7.7), and plunger (10) penetrating mounting holes (7.7) contact and press activity in turn
Spool (7.1).
6. vacuum flask liner cooling device according to claim 2, it is characterized in that the cover assembly (1) further includes cover
(1.3) it is arranged on plate of calming the anger (1.4) with plate of calming the anger (1.4), plunger (10), cover (1.3), plate of calming the anger (1.4) and middle layer
(1.1) gap between forms exhaust pipe (6), and cover (1.3) is provided with exhaust outlet (1.5), exhaust outlet (1.5) and exhaust pipe
Road (6) is interconnected, and the air inlet (8) of the cover assembly (1) is separately positioned on plate of calming the anger (1.4) and middle layer (1.1), on
Venthole (9) setting of cap assemblies (1) is in middle level on (1.1).
7. vacuum flask liner cooling device according to claim 1, it is characterized in that the activity valve module (7) further includes mutual
The moving valve core retainer plate (7.3) and installation set (7.8) of connection, installation set (7.8) one end and intake stack (5) are interference fitted each other,
Installation set (7.8) other end and moving valve core retainer plate (7.3) one end are interference fitted each other.
8. vacuum flask liner cooling device according to claim 1, it is characterized in that the pedestal (3) is provided with mounting bracket
(3.1), fan (4) is mounted in mounting bracket (3.1), and mounting bracket (3.1) corresponding fan (4) is provided with several air inlets
(3.2), it is connected separately between fan (4) and intake stack (5) fan silica gel (11), fan silica gel (11) one end is set in peace
It fills in bracket (3.1), fan silica gel (11) other end and intake stack (5) are interference fitted each other.
9. vacuum flask liner cooling device according to claim 8, it is characterized in that the fan silica gel (11) is provided with installation
Boss (11.1) and connecting tube (11.2), installation base (11.1) are provided with annular groove (11.3), mounting bracket (3.1) setting
Have plug side (3.3), annular groove (11.3) is set on plug side (3.3), and connecting tube (11.2) and intake stack (5) are each other
Interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821919623.9U CN209360394U (en) | 2018-11-20 | 2018-11-20 | A kind of vacuum flask liner cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821919623.9U CN209360394U (en) | 2018-11-20 | 2018-11-20 | A kind of vacuum flask liner cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209360394U true CN209360394U (en) | 2019-09-10 |
Family
ID=67837326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821919623.9U Active CN209360394U (en) | 2018-11-20 | 2018-11-20 | A kind of vacuum flask liner cooling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209360394U (en) |
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2018
- 2018-11-20 CN CN201821919623.9U patent/CN209360394U/en active Active
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