Detailed description of the invention
For the ease of understanding the present invention, below with reference to relevant drawings, the present invention is described more fully.
Accompanying drawing gives the better embodiment of the present invention.But, the present invention can come in many different forms
Realize, however it is not limited to embodiments described herein.On the contrary, provide the purpose of these embodiments to be
Make the disclosure is understood more thorough comprehensively.
Unless otherwise defined, all of technology used herein and scientific terminology and the technology belonging to the present invention
The implication that the technical staff in field is generally understood that is identical.The art used the most in the description of the invention
Language is intended merely to describe the purpose of specific embodiment, it is not intended that in limiting the present invention.Used herein
Term " and/or " include the arbitrary and all of combination of one or more relevant Listed Items.
Such as, a kind of sealed storage tank, including: Dewar vessel, described Dewar vessel is cylindric, described
Dewar vessel includes that vessel and lid, described vessel offer vessel port, described cover cap together in
Described vessel port, described vessel offers the first connector and second even away from one end of described vessel port
Interface, described first connector and the described second spaced setting of connector;Stabipack, described voltage stabilizing
Assembly includes that pressurizing vessel, stabilivolt and pressure maintaining valve, described pressurizing vessel offer voltage stabilizing mouth, described voltage stabilizing
Container is connected with one end of described pressure maintaining valve by described voltage stabilizing mouth, and the other end of described pressure maintaining valve is by described
Stabilivolt connects with the first connector of described Dewar vessel;Evacuation assembly, described evacuation assembly includes
Vacuum pump, vacuum tube and vacuum valve, described vacuum pump is connected by one end of described vacuum tank with described vacuum valve
Logical, the other end of described vacuum valve connects with the second connector of described Dewar vessel.
As it is shown in figure 1, be the sealed storage tank 10 of an embodiment, including: Dewar vessel 100, voltage stabilizing
Assembly 200 and evacuation assembly 300, described Dewar vessel 100 is cylindric, and described Dewar vessel 100 wraps
Including vessel 110 and lid 120, described vessel 110 offers vessel port 111, described lid 120
Being covered on described vessel port 111, described vessel 110 offers away from one end of described vessel port 111
One connector 112 and the second connector 113, described first connector 112 and described second connector 113 phase
Being spaced setting mutually, the first connector 112 is used for connecting pressurizing vessel 210, and the second connector 113 is used for connecting
Vacuum pump 310.Specifically, during use, food is put into vessel 110 by vessel port 111, will
Lid 120 seals and covers in vessel port 111 so that Dewar vessel 100 seals, by vacuum pump 310 to very
Empty 100 carries out evacuation so that food can be saved in Dewar vessel 100 for a long time.
As it is shown in figure 1, described stabipack 200 includes pressurizing vessel 210, stabilivolt 220 and pressure maintaining valve
230, described pressurizing vessel 210 offers voltage stabilizing mouth 211, and described pressurizing vessel 210 is by described voltage stabilizing mouth
211 connect with one end of described pressure maintaining valve 230, and the other end of described pressure maintaining valve 230 passes through described stabilivolt
220 connect with the first connector 112 of described Dewar vessel 100.Specifically, pressure maintaining valve 230 is check valve,
When the air pressure in pressurizing vessel 210 is less than the air pressure in Dewar vessel 100, pressurizing vessel 210 is by vacuum
Air in container 100 sucks in pressurizing vessel 210 so that the air pressure in Dewar vessel 100 declines, separately
On the one hand, owing to pressure maintaining valve 230 is check valve, therefore, when the air pressure in Dewar vessel 100 is less than voltage stabilizing
During container 210, the air in pressurizing vessel 210 will not be circulated to Dewar vessel 100.By pressure maintaining valve 230
Make the air pressure in Dewar vessel 100 keep balance, it is to avoid vacuum valve 330 frequent starting, cause energy consumption wave
Take.
As it is shown in figure 1, described evacuation assembly 300 includes vacuum pump 310, vacuum tube 320 and vacuum valve
330, described vacuum pump 310 is connected with one end of described vacuum valve 330 by described vacuum tube 320, described
The other end of vacuum valve 330 connects with the second connector 113 of described Dewar vessel 100.Specifically, very
Empty pump 310 is by vacuum tube 320 to Dewar vessel 100 evacuation, and vacuum valve 330 be check valve,
Unidirectional iris action, under check valve effect, air is flowed to vacuum pump 310 by Dewar vessel 100, and
Dewar vessel 100 cannot be flowed to by vacuum pump 310.
So that Dewar vessel 100 is sufficiently sealed, such as, described vessel port 111 is circular, such as,
As depicted in figs. 1 and 2, described vessel 110 includes that chamber wall 115, described lid 120 are circular,
Described lid 120 is provided with sealing ring 121, such as, described sealing ring towards the one side of described vessel port 111
121 are connected to described vessel 110, and such as, described sealing ring 121 is connected to described vessel 110
Chamber wall 115, such as, described sealing ring 121 is rubber ring, enables to lid by sealing ring 121
120 is less with the gap of vessel 110, and then improves the seal of lid 120.
In order to improve the seal of lid 120 further, described sealing ring 121 includes the circle body of at least three layers,
Such as, as in figure 2 it is shown, be set to zigzag structure outside described sealing ring 121, such as, described sealing
It is provided with pleated structure outside circle 121, by zigzag structure or pleated structure, increases sealing ring 121
With the contact area of the chamber wall 115 of vessel 110, and then the sealing ring 121 being and chamber wall 115
Between gap 337 less, and then make lid 120 to the sealing effectiveness of vessel 110 more preferably.
In order to improve the evacuation efficiency of evacuation assembly 300, such as, described first connector 112 and institute
State the second connector 113 to be oppositely arranged, such as, described first connector 112 and described second connector 113
It is relatively arranged on the both sides of described vessel 110, such as, described first connector 112 and described second
Connector 113 is arranged at described vessel 110 diverse location in the axial direction, in such manner, it is possible to increase by the
One connector 112 and the distance of the second connector 113, so that vacuum pump 310 is to Dewar vessel 100
During evacuation, the impact on pressurizing vessel 210 can be reduced.
In one embodiment, as shown in Figure 3 and Figure 4, described vacuum valve 330 includes valve body 333, first
Barrier flaps 331 and the second barrier flaps 332, described valve body 333 offers the first connected entrance 334, and described first
Barrier flaps 331 offers the second connected entrance 335, and described first barrier flaps 331 is fixedly installed on described first
In connected entrance 334, described second barrier flaps 332 is movably set in described first barrier flaps 331 and movable
Being connected to described second connected entrance 335, such as, described second barrier flaps 332 is movably set in described first resistance
Partition 331 is towards the one side of described vacuum pump 310, when vacuum pump 310 works, as shown in Figure 4, by
Relatively low near vacuum pump 310 one end air pressure in vacuum tube 320 so that the second barrier flaps 332 departs from the first resistance
Partition 331, so that the second connected entrance 335 is opened, and then makes the air in Dewar vessel 100 by very
Empty pump 310 is extracted out, and after vacuum pump 310 quits work, as it is shown in figure 5, the second barrier flaps 332 will
It is closely attached in the first barrier flaps 331, and owing to now Dewar vessel 100 internal gas pressure is relatively low, intercepts second
Sheet 332 tightly adsorbs in the first barrier flaps 331, so that the second connected entrance 335 is airtight so that true
Empty 100 seals.
In order to improve the seal of described vacuum valve 330, such as, the first barrier flaps 331 is elastomeric flexible material
Matter is made, and such as, the second barrier flaps 332 is made for elastomeric flexible material, such as, and this elastomeric flexible material
For rubber, so, owing to the first barrier flaps 331 is made for soft material with the second barrier flaps 332, therefore,
It is easily bent under the vacuum action by vacuum pump 310 so that the second connected entrance 335 is opened, and very
After empty pump 310 quits work, the second barrier flaps 332 is close to the first barrier flaps due to natural resiliency effect
331 so that the second connected entrance 335 closes.
Such as, as shown in Figure 3 and Figure 4, the first connected entrance 334 is circular, such as, and the first barrier flaps 331
For circle, such as, the second barrier flaps 332 is circular, and such as, the second connected entrance 335 is circular, such as,
Described second barrier flaps 332 is parallel with described first barrier flaps 331, such as, and described second barrier flaps 332
Activity is connected to the surface of described first barrier flaps 331, and such as, described second barrier flaps 332 is by connecting
Muscle 336 is connected with described first barrier flaps 331, and such as, described dowel 336 is connected to described second resistance
The edge of partition 332, specifically, the second connected entrance 335 is opened in the middle part of the first barrier flaps 331, and
First barrier flaps 331 is connected by the dowel 336 at edge with the second barrier flaps 332, such as, and dowel
336 are radially arranged around described second barrier flaps 332, and such as, this dowel 336 is elastic soft material
Making, such as, this dowel 336 is rubber reinforcement, and such as, this dowel 336 is made for polyurethane rubber,
The dowel 336 that rubber is made has good elasticity and toughness, at the strength suction by vacuum pump 310
After, dowel 336 stretches, and the toughness that dowel 336 is good makes it be difficult to be pulled off, and makees in pull of vacuum
Departing from the first barrier flaps 331 by lower second barrier flaps 332, after vacuum pump 310 stops, dowel 336 exists
Recovering shape under natural resiliency effect, the second barrier flaps 332 is attached under the elastic reaction of dowel 336
First barrier flaps 331 surface so that the second connected entrance 335 seals.
So that the second barrier flaps 332 can be close in the second barrier flaps 332, such as, dowel 336
Length be not more than the difference of the radius of described first barrier flaps 331 and the radius of described second barrier flaps 332,
Such as, the radius of the first barrier flaps 331 is more than the radius of the second barrier flaps 332, such as, dowel 336
Length equal to the difference of the radius of radius and described second barrier flaps 332 of described first barrier flaps 331, example
As, the length of dowel 336 is less than the radius of described first barrier flaps 331 and described second barrier flaps 332
The difference of radius, owing to the length of dowel 336 is less than or equal to the radius and second of the first barrier flaps 331
The difference of the radius of barrier flaps 332, and make dowel 336 when vacuum pump 310 does not works, still in stretching tight
Tight state, so that the second barrier flaps 332 can be close to the first obstruct under the elasticity of dowel 336
Sheet 331.
In order to improve the property passed through of the second connected entrance 335, it is to avoid when vacuum pump 310 works, second intercepts
Sheet 332 is connected to the first barrier flaps 331 and causes the second connected entrance 335 to open, such as, such as Fig. 4 institute
Showing, described first barrier flaps 331 offers some gaps 337, and such as, some described gaps 337 are around described
Second connected entrance 335 is arranged, such as, some described gaps 337 around described second connected entrance 335 in radiation
Shape is arranged, and so, under the vacuum action by vacuum pump 310, the first barrier flaps 331 produces deformation,
So that gap 337 becomes big, and then air is circulated, along with the circulation of air so that second intercepts
Sheet 332 and the first barrier flaps 331 produce gap, and then make air passage rates very fast, by second even
The throughput of port 335 increases, and then makes the gap of the first barrier flaps 331 and the second barrier flaps 332 more
Greatly, thus improve the property passed through of the second connected entrance 335.Such as, the diameter of the second connected entrance 335 and seam
The length sum of gap 337 is less than the diameter of the second barrier flaps 332, so, when vacuum pump 310 does not works,
Second connected entrance 335 and gap 337 can be sealed by the second barrier flaps 332.
So that the sealing effectiveness of Dewar vessel 100 is more preferably, it is to avoid after Dewar vessel 100 seals, air
Being entered Dewar vessel 100 by vacuum tube 320, such as, it is close that vacuum valve 330 is communicated in described vacuum tube 320
One end of described Dewar vessel 100, such as, arranges multiple vacuum valve 330, such as, described vacuum tube 320
It is set to multisection type, connects a described vacuum valve 330 between every two sections of described vacuum tubes 320, such as, very
Spacing between empty valve 330 is gradually increased near described vacuum pump 310 by near described Dewar vessel 100,
So, owing to being provided with multiple vacuum valve 330 between vacuum tube 320, it is possible to limit air further and enter true
In empty 100, and owing to the spacing between vacuum valve 330 is along with diminishing near Dewar vessel 100,
The seal making vacuum valve 330 is higher, specifically, due to along with more near Dewar vessel 100, vacuum
The air pressure of pipe 320 is the lowest, and the spacing between vacuum valve 330 is less so that the pressure that vacuum valve 330 receives
Can gradually disperse by force so that the pressure that single vacuum valve 330 receives reduces, and then makes vacuum valve 330
Seal higher.
So that Dewar vessel 100 can place the food of different pot-life, in one embodiment,
As shown in Figure 6, present invention additionally comprises baffle plate assembly 400, described baffle plate assembly 400 includes baffle body 410
With gasket seal 420, described baffle body 410 has circular configuration, and described gasket seal 420 fits in institute
Stating the one side of baffle body 410, described baffle plate assembly 400 is removable installed in described vessel 110
In.Specifically, when baffle plate assembly 400 installation settings is in vessel 110, baffle plate assembly 400 will hold
Container chamber in device body 110 is divided into the first chamber 101 and the second chamber 102, such as, vessel
The bottom of 110 and baffle plate assembly 400 seal and form the first chamber 101, baffle plate assembly 400 and vessel 110
Top and lid 120 form the second chamber 102, the first chamber 101 sealing is higher, the second chamber 102
Sealing is low compared with the first chamber 101, and so, the first chamber 101 places the higher food of seal request, and
It is relatively low that second chamber 102 places seal request, and the food that the pot-life is shorter, and due to gasket seal 420
There is good seal, even if after lid 120 is opened, the first chamber 101 still in sealing state,
So that the first chamber 101 can preserve food for a long time.
So that the first chamber 101 and the second chamber 102 all can pass through vacuum pump 310 evacuation, such as,
Described vessel 110 offers two the second connectors, and such as, two the second connectors are opened in described
Vessel 110 is axially gone up on diverse location, and such as, two the second connectors are opened in described baffle plate assembly
The both sides of 400, such as, described vacuum tube 320 is communicated with three-way valve, the two ends of three-way valve respectively with two institutes
Stating the second connector 113 to connect, the other end connects with vacuum pump 310, and so, vacuum pump 310 can be simultaneously
To the first chamber 101 and the second chamber 102 evacuation.
In order to fix described baffle plate assembly 400, in one embodiment, referring again to Fig. 6, described container
Wall 115 inner bulge receiving part 116, described baffle body 410 is connected to described receiving part 116, such as,
Described baffle body 410 is connected to described receiving part 116, such as, described baffle plate assembly by described sealing gasket
Being provided with sealing gasket outside 400, such as, described baffle plate assembly 400 is by described sealing gasket and chamber wall 115
Abutting, so, baffle body 410 can be fixed in described vessel 110, and sealing gasket can subtract
Gap between small front apron assembly 400 and chamber wall 115, so that baffle plate assembly 400 and vessel
Better tightness between 110.
So that baffle plate assembly 400 is prone to by dismounting in vessel 110, such as, described baffle body
The one side of 410 the most described sealing gaskets is provided with handle 411, can be to baffle body 410 by handle 411
Force so that baffle body 410 is readily disassembled.
It is noted that when after evacuation in vessel 110, even if lid 120 is opened, first
Chamber 101 is still in sealing state, and the air pressure within the first chamber 101 is less than external pressure, so, by
In the effect of atmospheric pressure, baffle body 410 is the most quick detachable, in order to dismantle baffle plate assembly 400 time, first
Chamber 101 air pressure inside balances with external pressure, such as, as it is shown in fig. 7, described baffle body 410 is opened
It is provided with air-vent 413, described baffle body 410 rotates and is provided with gas-tight 412,412 use that this is gas-tight
Align after rotating air-vent 413, so that air-vent 413 seals, so, when baffle plate assembly dismantled by needs
When 400, rotate gas-tight 412 so that gas-tight 412 is staggered with air-vent 413, and air is by air-vent 413
Enter in the first chamber 101 so that the air pressure in the first chamber 101 is identical with external pressure, so, energy
Enough easily baffle plate assembly 400 is taken out by handle 411.
In a further embodiment, as shown in Figure 8, the medial recess of described baffle body 410 is provided with rotation
Turn trough 414, described swivelling chute 414 is circular configuration, described fixing connect a circle gas-tight of handle 411
412, described gas-tight 412 rotates and is arranged in described swivelling chute 414, and described swivelling chute 414 offers the
One air-vent 415, described gas-tight 412 offers the second air-vent 416, when gas-tight 412 at swivelling chute
When rotating in 414, the first air-vent 415 is aligned in the second air-vent 416 so that the first chamber 101 is with outer
Portion connects, and baffle plate assembly 400 can be taken out by vessel 110 easily, and when the first air-vent 415
Mutually stagger with the second air-vent 416, then make the first chamber 101 airtight.In order to by gas-tight 412 turns
Moving and be fixed in swivelling chute 414, such as, described swivelling chute 414 edge is convex towards the middle part of swivelling chute 414
Rising and arrange stop section, between the bottom of described stop section and described swivelling chute 414, interval forms buckle slot, institute
The outside stating gas-tight 412 is arranged in described buckle slot, and so, described stop section can limit gas-tight
The motion of 412, it is to avoid gas-tight 412 departs from described swivelling chute 414.In order to improve gas-tight 412 and rotate
Seal between groove 414, such as, described gas-tight 412 edges are provided with rubber ring, such as, described
Gas-tight 412 outward flanges are provided with screw thread, and the cell wall of described buckle slot is provided with screw thread, described gas-tight 412
It is spirally connected with described buckle slot, so, by rubber ring or screw thread so that gas-tight 412 with buckle slot
Connect the tightst, it is to avoid air is revealed by between gas-tight 412 and swivelling chute 414.
In order to firmly accept described baffle plate assembly 400, such as, described receiving part 116 has loop configuration,
Such as, described receiving part 116 is arranged inside described vessel 110, and for example, and described receiving part 116
For multiple, such as, multiple described receiving parts 116 are uniformly arranged along described chamber wall 115.
In order to improve the seal of described baffle plate assembly 400, such as, described baffle body 410 has circle
Such as, described gasket seal 420 has circular configuration to structure, such as, and the diameter of described gasket seal 420
Identical with the diameter of described baffle body 410, the baffle plate assembly 400 of circular configuration is with cylindrical container originally
The shape of body 110 is more mated, and then makes the gap between baffle plate assembly 400 and vessel 110 more
It is little, so that the seal of baffle plate assembly 400 is higher.
For the ease of toward accommodating food in Dewar vessel 100, in one embodiment, as it is shown in figure 9, this
Invention also includes accommodating assembly 500, and described accommodating assembly 500 is removable installed in described vessel 110
In, and described accommodating assembly 500 is provided with multiple through hole, such as, described accommodating assembly 500 is netted,
This accommodating assembly 500 has multiple mesh, and such as, described container assemblies includes accommodating net, described accommodating net
It is provided with multiple mesh.So, during accommodating food, can first food be placed in accommodating assembly 500,
Again accommodating assembly 500 is placed in vessel 110, so that the placement of food is more convenient, carries
The placement efficiency of high food.
In order to toward accommodating food in accommodating net, such as, described accommodating net has U-shaped structure, such as, described
Accommodating net has opening.In order to fix described accommodating assembly 500, such as, the opening of described accommodating net
Outside is provided with buckle (not shown), such as, is provided with draw-in groove, described buckle in described vessel 110
Removably it is fastened on described draw-in groove (not shown).So, when accommodating net is placed in vessel 110,
Buckle is fixing can be fixed in described vessel 110 so that house net with in draw-in groove, and can be just
In dismounting.
In order to reduce the ambient temperature outside Dewar vessel 100, the food in Dewar vessel 100 is impacted,
Such as, as shown in Figure 10, vacuum chamber 115d in chamber wall 115, it is provided with, true due in vacuum chamber 115d
Altitude so that heat is easily detected by vacuum chamber 115d transmission, in such manner, it is possible to effectively completely cut off Dewar vessel
100 internal with outside heat exchanges, it is possible to avoid the food hard to bear external environment condition temperature of energy in Dewar vessel 100
Degree changes and affects.
It should be understood that, due to long-term storage food, Dewar vessel 100 is easily and food produces reaction,
And then make to suffer erosion inside the chamber wall 115 of Dewar vessel 100, in order to improve the resistance to of chamber wall 115
Corrosivity, such as, as shown in Figure 10, described chamber wall 115 includes the anticorrosion arranged from the inside to the outside with this
Layer 115a, thermal insulation layer 115b and protective layer 115c, corrosion-resistant coating 115a have good anticorrosive property, tool
Have strong inertia, it is difficult to react with food, thermal insulation layer 115b can by internal for Dewar vessel 100 with
Outside shield heat away, it is to avoid or reduce the ambient temperature outside Dewar vessel 100 in Dewar vessel 100
Food impact, protective layer 115c has higher-strength and hardness, it is possible to bear greater impact, effectively
Dewar vessel 100 is avoided to be dropped by high-altitude and rupture, effectively the food in protection Dewar vessel 100.
In one embodiment, described corrosion-resistant coating 115a includes each component of following mass parts:
Ferrum 20 parts~65 parts, titanium 25 parts~40 parts, chromium 25 parts~35 parts, copper 3.3~4.4 parts, aluminum 3.5~3.9
Part, 1.0 parts~1.7 parts of zinc, 0.33 part~0.47 part of carbon, silicon 0.2 part~0.38 part, boron 0.15 part~0.19 part,
Cobalt 0.01 part~0.07 part, 0.01 part~0.03 part of phosphorus, sulfur 0.001 part~0.005 part, 0.01 part of strontium~0.02
Part, bismuth 0.01 part~0.02 part, scandium 0.001 part~0.002 part and gadolinium 0.001 part~0.002 part.
Use ferrum, titanium, chromium and copper as the composition being made predominantly into of corrosion-resistant coating 115a so that corrosion-resistant coating
115a has stronger hardness and rigidity, and has certain anticorrosive property concurrently, adds aluminum on this basis
3.5~3.9 parts, 1.0 parts~1.7 parts of zinc, 0.33 part~0.47 part of carbon, silicon 0.2 part~0.38 part, boron 0.15 part
~0.19 part, cobalt 0.01 part~0.07 part, 0.01 part~0.03 part of phosphorus, sulfur 0.001 part~0.005 part, strontium 0.01
Part~0.02 part, bismuth 0.01 part~0.02 part, scandium 0.001 part~0.002 part and gadolinium 0.001 part~0.002 part, on
State composition and there is stronger inertia, be difficult to react with acid or alkali, it is possible to optimize described corrosion-resistant coating further
The milk corrosivity of 115a, especially the milk corrosivity to acid such that it is able to preferably avoid reacting with food.
In one embodiment, described corrosion-resistant coating 115a includes each component of following mass parts: ferrum 25 parts
~60 parts, titanium 30 parts~35 parts, chromium 28 parts~30 parts, copper 3.8~4.2 parts, aluminum 3.7~3.9 parts, zinc 1.2
Part~1.5 parts, 0.39 part~0.44 part of carbon, silicon 0.28 part~0.32 part, boron 0.16 part~0.18 part, cobalt 0.04
Part~0.06 part, 0.01 part~0.03 part of phosphorus, sulfur 0.002 part~0.003 part, 0.01 part~0.02 part of strontium, bismuth
0.01 part~0.02 part, scandium 0.001 part~0.002 part and gadolinium 0.001 part~0.002 part.
Preferably, described corrosion-resistant coating 115a includes each component of following mass parts: ferrum 55 parts, titanium 32 parts,
Chromium 30 parts, copper 3.9 parts, 3.8 parts of aluminum, 1.4 parts of zinc, 0.4 part of carbon, silicon 0.3 part, boron 0.17 part, cobalt
0.05 part, 0.02 part of phosphorus, sulfur 0.002 part, 0.01 part of strontium, bismuth 0.02 part, scandium 0.001 part and gadolinium 0.002
Part.
Such as, in described thermal insulation layer 115b, it is provided with cavity, such as, as shown in Figure 10, described thermal insulation layer
It is provided with vacuum chamber 115d, vacuum chamber 115d in 115b and can be effectively improved the heat-proof quality of thermal insulation layer 115b,
Can effectively completely cut off the heat exchange that Dewar vessel 100 is internal with outside, it is possible in avoiding Dewar vessel 100
Food can hard to bear ambient temperature change and affect.
In one embodiment, described protective layer 115c includes each component of following mass parts:
Ferrum 65 parts~88 parts, copper 0.4 part~0.95 part, 0.1 part~0.5 part of aluminum, silver 0.01 part~0.05 part,
0.06 part~0.25 part of carbon, 0.02 part~0.1 part of zinc, silicon 0.1 part~0.3 part, 0.05 part~0.1 part of phosphorus, boron
0.001 part~0.01 part, 0.01 part~0.05 part of nickel, scandium 0.05 part~0.3 part, chromium 0.05 part~0.3 part, thorium
0.01 part~0.05 part, cerium 0.01 part~0.05 part and zirconium 0.01 part~0.05 part.
Owing to protective layer 115c is arranged on the outermost layer of Dewar vessel 100, therefore protective layer 115c needs have
Stronger hardness and rigidity, had stronger hardness and rigidity by ferrum as the protective layer 115c of main component,
There is stronger compressive property, effectively prevent from colliding and deformation, effectively the food in protection Dewar vessel 100,
And add copper 0.4 part~0.95 part, 0.1 part~0.5 part of aluminum, silver 0.01 part~0.05 part and 0.06 part of carbon~0.25
Part, the hardness of energy heavy seal coat 115c further and rigidity, and make alloy possess certain anticorrosive property,
And add 0.02 part~0.1 part of zinc, silicon 0.1 part~0.3 part, 0.05 part~0.1 part of phosphorus, boron 0.001 part~0.01
Part, 0.01 part~0.05 part of nickel, scandium 0.05 part~0.3 part, chromium 0.05 part~0.3 part, thorium 0.01 part~0.05
Part, cerium 0.01 part~0.05 part and zirconium 0.01 part~0.05 part so that protective layer 115c improves protective layer 115c
Toughness, it is possible to avoid owing to the hardness of protective layer 115c and rigidity are too strong and cause being ruptured by fierceness collision,
The protective layer 115c with certain toughness can produce deformation, to prevent protective layer after by hard hit
115c directly ruptures, and after adding the composition of said components, moreover it is possible to improve the anti-of protective layer 115c further
Corrosivity.
Preferably, in one embodiment, described protective layer 115c includes each component of following mass parts:
Ferrum 80 parts, copper 0.8 part, 0.4 part of aluminum, silver 0.03 part, 0.1 part of carbon, 0.08 part of zinc, silicon 0.2
Part, 0.08 part of phosphorus, boron 0.009 part, 0.03 part of nickel, scandium 0.15 part, chromium 0.15 part, thorium 0.03 part,
Cerium 0.02 part and zirconium 0.02 part.
In order to fix described Dewar vessel 100, described evacuation assembly 300 and described stabipack 200,
In one embodiment, as shown in Figure 6, present invention additionally comprises base 600, in described base 600, offer appearance
Putting chamber 601, described evacuation assembly 300 and described stabipack 200 are arranged in described containing cavity 601,
Such as, Dewar vessel 210 and vacuum pump 310 are arranged in described containing cavity 601, and described base 600 has
Loading end, described Dewar vessel 100 is had to be arranged on described loading end.Enable to take out by base 600
Vacuum subassembly 300 and stabipack 200 can be fixed, and due to evacuation assembly 300 and stabipack 200
It is arranged in base 600, space can be saved.
So that after lid 120 is opened, the air in vessel 110 is capable of Rapid Circulation, keeps away
Exempt from the food in vessel 110 for a long time place generation abnormal smells from the patient human body is impacted, in one embodiment,
As shown in figure 11, present invention additionally comprises ventilation assembly, described ventilation assembly includes blower fan 700, described blower fan
700 are communicated in outside described vessel port 111.Specifically, after lid 120 is opened, blower fan 700 works,
The air velocity making vessel port 111 is accelerated, so that the air in vessel 110 can be quickly with outer
The air exchange in portion.
Such as, referring again to Figure 11, described vessel 110 is opened near one end of described vessel port 111
Being provided with wind groove 117, described blower fan 700 connects with described wind groove 117, and such as, described wind groove 117 has ring
Shape structure, such as, described wind groove 117 is parallel to the axial of described vessel 110, so, works as blower fan
During 700 work, air quickly blows out to vessel port 111 along wind groove 117 so that the air pressure of vessel port 111
Reduce, so that the air in vessel 110 can quickly be supplemented to vessel port 111, thus realize holding
The quick exchange of air in device body 110.
So that after lid 120 is opened the flow velocity of the air of vessel port 111 position faster, such as, institute
State the width of wind groove 117 by the one end near described blower fan 700 to the one end away from described blower fan 700 gradually
Reducing, owing to air mass flow is certain, along with the width of wind groove 117 reduces, the flow velocity of air will increase,
So that be positioned at the flow velocity of the air of vessel port 111 position faster, and then make the sky in vessel 110
Gas can quickly swap with extraneous air.
Each technical characteristic of embodiment described above can combine arbitrarily, for making description succinct, the most right
The all possible combination of each technical characteristic in above-described embodiment is all described, but, if these skills
There is not contradiction in the combination of art feature, is all considered to be the scope that this specification is recorded.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed,
But can not therefore be construed as limiting the scope of the patent.It should be pointed out that, for this area
For those of ordinary skill, without departing from the inventive concept of the premise, it is also possible to make some deformation and change
Entering, these broadly fall into protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be with appended power
Profit requires to be as the criterion.