CN104260266B - The foam process of foaming machine, foam process and refrigeration plant - Google Patents
The foam process of foaming machine, foam process and refrigeration plant Download PDFInfo
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- CN104260266B CN104260266B CN201410387140.9A CN201410387140A CN104260266B CN 104260266 B CN104260266 B CN 104260266B CN 201410387140 A CN201410387140 A CN 201410387140A CN 104260266 B CN104260266 B CN 104260266B
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Abstract
The invention discloses the foam process of a kind of foaming machine, foam process and refrigeration plant.Foaming machine, for foaming pre-arrangement, defines foaming space in pre-arrangement, including: foaming mould, foaming mould includes that the first mould and the second mould, the first mould and the second mould cooperate to limit die cavity；The first extraction sector connected with die cavity；The second extraction sector being disposed to extend in being located at foaming space and in foaming space, wherein the second extraction sector connects with die cavity and includes: is fixed on the airway in foaming space, the tube wall of airway is formed along its axially extended air drain；And the first negative pressure offer device for forming negative pressure in foaming space that is connected with the first extraction sector.Foaming machine according to embodiments of the present invention, air negative pressure can be delivered to foam in space uniformly, thus the heat-insulating property of the heat-insulation layer obtained after expanding is more preferable, and can save foaming raw material, reduces cost.
Description
The application is Chinese patent application 201110007835.6, invention entitled " foaming machine, foam process and system
The foam process of cool equipment ", application artificial " beautiful Hefei Fridge Co., Ltd, Hefei Hualing Co., Ltd. "
Divisional application.
Technical field
The present invention relates to refrigeration plant and manufacture field, especially relate to a kind of foaming machine, use sending out of described foaming machine
Bubble technique and the foam process of refrigeration plant.
Background technology
Refrigeration plant in the market is mainly made up of refrigeration system and thermal-insulating body, and wherein thermal-insulating body is usually and utilizes
Following technique is made:
The shell of refrigeration plant, inner bag assembly are become the housing of a relative closure, and sets on the end face of housing
Put the fill port of foaming raw material, and casing is placed in the environment that temperature is higher and deposits a period of time so that casing is abundant
Preheating.Then casing is loaded clamping closure in foaming mould.Hereafter by deployed foaming raw material by pre-on casing
The fill port stayed is injected in empty van body, and in 5～10 minutes subsequently, foaming agent occurs in the space that casing is enclosed
Chemical reaction, is fully expanded to be full of the space that whole casing is enclosed, and cooled and solidified, and so far thermal-insulating body makes
Complete.
Owing to the whole process of foam box is depressed all in standard atmosphere, but and casing to be clamped in relative closure the completeest
In hermetic foaming mould, when foamed material fast foaming expands, the air being originally retained in casing is squeezed,
And discharge from the gap of foaming mould, now the air pressure in casing is apparently higher than ambient air pressure, thus causes:
1, the air that in foaming process, part fails to discharge in time can penetrate into foamed material and form big pore, causes casing
Forming partial insulation weak spot, overall thermal conductivity is higher；
2, box house is because of foaming raw material rapid expanding, and the case inner high voltage that aerofluxus the most freely causes, and extends foaming former
Material is full of the time cycle of whole casing, limits production capacity；
3, elongated due to fill cycle, and foaming raw material is in foaming process, its hardness increases, and mobility, moulds
The multiple factors such as property reduction so that fill port near-end foamed material density is higher, and away from fill port foamed material density relatively
It is low, so that whole casing heat conductivity is uneven, bulk article individual variation is big.
4, refrigeration plant is in actual production, due to above-mentioned weak point, generally requires filled more foaming raw material
Reach corresponding heat-insulating property, cause relatively costly, and thus involve environmental protection, the problems such as the energy.
Summary of the invention
It is contemplated that at least solve one of technical problem present in prior art.
To this end, it is an object of the present invention to propose a kind of foaming machine, described foaming machine obtains after can making foaming
The heat-insulating property of heat-insulation layer is more preferable, and can save foaming raw material, reduces cost.
Further object is that a kind of foam process of proposition, described foam process uses above-mentioned foaming machine to carry out
Foaming.
The present invention is to propose the foam process of a kind of refrigeration plant a purpose.
The foaming machine of embodiment according to a first aspect of the present invention, for pre-arrangement is foamed, described pre-arrangement
Inside defining foaming space, described foaming machine includes: foaming mould, and described foaming mould includes the first mould and second
Mould, described first mould and the second mould cooperate to limit the die cavity being suitable to accommodate described pre-arrangement；First bleeds
Mechanism, described first extraction sector connects with described die cavity for extracting the gas in described die cavity out；Second extraction sector,
It is disposed to extend in described second extraction sector is located at described foaming space and in described foaming space, wherein said second
Extraction sector connects with described die cavity, and described second extraction sector includes: airway, and described airway is by fixing machine
Structure is fixed in described foaming space, the tube wall of described airway is formed along its axially extended air drain；With first
Negative pressure provides device, described first negative pressure to provide device to be connected in described foaming space with described first extraction sector
Interior formation negative pressure.
Foaming machine according to embodiments of the present invention, by using the second extraction sector being disposed to extend in foaming space,
Make air negative pressure can be delivered to uniformly foam in space, thus the heat-insulating property of the heat-insulation layer obtained after expanding be more preferable,
And foaming raw material can be saved, reduce cost.
In an example of the present invention, from the first end of described airway to second end relative with described first end, institute
The width stating air drain is uniform along the axial direction of described airway.
Alternatively, the width of described air drain is 1-3mm.
Still optionally further, the width of described air drain is 1.5mm.
In another example of the present invention, from the first end of described airway to second end relative with described first end,
The width of described air drain gradually subtracts greatly along the axial direction of described airway.Thus, it is possible to compensate in the axial direction of airway
Barometric gradient, can be transferred to negative pressure with being more uniformly distributed foam in space everywhere.
Alternatively, the width of the described air drain of the end of described airway is 0.5-1.5mm, and described airway
The width of the described air drain at the second end is 1.5-3mm.
Still optionally further, the width of the described air drain of the end of described airway is 1mm, and described airway
The width of the described air drain at the second end is 2mm.
In an example of the present invention, at described inducing QI inner coaxial tube and be rotatably provided with inner sleeve, described inner sleeve
Tube wall on be formed along its axially extended notch.
Alternatively, described airway is provided with the ventilative filtering layer for covering described air drain, and described ventilative filtering layer is through sky
Can stop while gas that expanded material enters in airway.
In one embodiment of the invention, described fixed mechanism includes: substrate, and described substrate is located at described pre-arrangement
On；And fixed claw, described fixed claw deformable ground sets on the substrate for airway described in clamping.
Alternatively, described fixed claw is axially spaced from each other along described airway of multiple and multiple fixed claw.Thus,
Airway is axially fixed on the case shell of pre-arrangement along it, to keep stable in pumping process.
In another embodiment of the present invention, described fixed mechanism includes: side plate, and described side plate is located at described prepackage group
On part and and described pre-arrangement between be formed with predetermined gap；With wedging latch, one end of described wedging latch is inserted
In described predetermined gap and airway described in other end clamping.
Alternatively, described wedging latch includes: body, and described body includes mutually perpendicular first plate and the second plate；Wedge
Tight portion, described wedging portion stretches out from the outer of described first plate；Location division, described location division is from described second plate
Extend and parallel with described first plate；And limiting section, described limiting section be located at described wedging portion and described first plate it
Between and recessed along the direction parallel with the second plate；Wherein, described wedging portion is inserted between described side plate and pre-arrangement
Predetermined gap in, and described airway be positioned between described location division and described body limit space in.
Alternatively, described wedging latch is axially spaced from each other along described airway of multiple and multiple wedging latch.By
This, airway is axially fixed on the case shell of pre-arrangement along it, to keep stable in pumping process.
In some embodiments of the invention, described first extraction sector is exhaust tube.
The foam process of embodiment according to a second aspect of the present invention, uses the foaming described in above-mentioned first aspect embodiment to set
Standby, and comprise the following steps:
(1) in the foaming space limited in the second extraction sector is installed to described pre-arrangement；
(2) seal in pre-arrangement being inserted described foaming mould and by described foaming mould and reserve suction interface, its
Described in suction interface be connected with the first end of described second extraction sector；
(3) one end of described first extraction sector is connected with described suction interface through described foaming mould, described the
The other end of one extraction sector provides device to be connected with negative pressure；
(4) starting described negative pressure provides device to extract the gas in described foaming space out；
(5) in described foaming space, expanded material is filled.
Preferably, when the backward described foaming space of as little as 0.99-0.01 times atmospheric pressure of the air pressure drop in described foaming space
Interior filled expanded material.
The foam process of the refrigeration plant of embodiment according to a third aspect of the present invention, uses institute in above-mentioned second aspect embodiment
The foam process stated, wherein, described pre-arrangement includes case shell and is located at the inner bag within described case shell, described case shell
Inwall and the outer wall of inner bag between the region that limits as foaming space.
Foam process according to embodiments of the present invention, by the foaming machine described in employing above-described embodiment, it is possible to decrease send out
Foam during bubble the air pressure in space, thus obtains the more preferable heat-insulation layer of heat-insulating property.Simultaneously as foaming space
In gas uniformly taken away, aerofluxus will not be caused smooth and the partial high pressure that produces, and then avoid gas and stretch into and send out
Foam material forms big pore, it is ensured that foaming quality, reduce the time cycle of foaming simultaneously, improve production capacity.
The additional aspect of the present invention and advantage will part be given in the following description, and part will become from the following description
Substantially, or by the practice of the present invention recognize.
Accompanying drawing explanation
Above-mentioned and/or the additional aspect of the present invention and advantage will become bright from combining the accompanying drawings below description to embodiment
Aobvious and easy to understand, wherein:
Fig. 1 is the schematic diagram of foaming machine according to an embodiment of the invention；
Fig. 2 is the side schematic view of foaming machine in accordance with another embodiment of the present invention, wherein at foaming mould outer sheath
It is provided with seal casinghousing；
Fig. 3 is the second extraction sector of the foaming machine shown in Fig. 1 assembling schematic diagram in pre-arrangement；
Fig. 4 is the enlarged diagram that Fig. 3 centre circle shows A portion；
Fig. 5 is the schematic diagram of first example of the airway 30a according to embodiments of the invention one, the horizontal stroke of its median septum
Cross section is rectangle；
Fig. 6 be in Fig. 5 B-B to sectional view；
Fig. 7 is the schematic diagram of second example of the airway 30a according to embodiments of the invention one, the cross section of dividing plate
For cross；
Fig. 8 be in Fig. 7 C-C to sectional view；
Fig. 9 is the schematic diagram of first example of the airway 30b according to embodiments of the invention two；
Figure 10 be in Fig. 9 D-D to schematic diagram；
Figure 11 is the schematic diagram of second example of the airway 30b according to embodiments of the invention two；
Figure 12 is the schematic cross-section in Figure 11；
Figure 13 is the schematic diagram that the inner sleeve in the airway 30b shown in Figure 11 rotates；
Figure 14 is the schematic cross-section in Figure 13；
Figure 15 is the schematic perspective view of the airway 30b according to embodiments of the invention two, is wherein provided with on air drain
Air filter layer；
Figure 16 is the schematic cross-section in Figure 15；
Figure 17 is the schematic diagram of the airway 30c according to embodiments of the invention three；
Figure 18 is the schematic cross-section in Figure 17；
Figure 19 is that the second extraction sector shown in Fig. 3 is at the built-in rear upside schematic diagram joined of pre-arrangement；
Figure 20 is the enlarged diagram that Figure 19 centre circle shows E portion；
Figure 21 is the rear upside schematic diagram that the second extraction sector assembles in the case shell of pre-arrangement, illustrated therein is basis
The fixed mechanism of first embodiment of the invention；
Figure 22 is the enlarged diagram that Figure 21 centre circle shows F portion；
Figure 23 is the top view that the second extraction sector shown in Figure 21 assembles in the case shell of pre-arrangement；
Figure 24 is the enlarged section schematic diagram that Figure 23 centre circle shows G portion；
Figure 25 is the rear upside schematic diagram that the second extraction sector assembles in the case shell of pre-arrangement, illustrated therein is basis
The fixed mechanism of second embodiment of the invention；
Figure 26 is the enlarged diagram that Figure 25 centre circle shows H portion；
Figure 27 is the top view that the second extraction sector shown in Figure 25 assembles in the case shell of pre-arrangement；
Figure 28 is the enlarged diagram that Figure 27 centre circle shows I portion；
Figure 29 is the schematic diagram of the wedging latch in the fixed mechanism shown in Figure 25；And
Figure 30 is the schematic flow sheet of foam process according to embodiments of the present invention.
Reference:
1, foaming mould；2, the first extraction sector；
3, the second extraction sector；30, airway；31, fixed mechanism；32, ventilative filtering layer
4, the first negative pressure provides device；
200, pre-arrangement；210, foaming space；220, case shell；230, inner bag
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, the most from start to finish phase
Same or similar label represents same or similar element or has the element of same or like function.Below with reference to
The embodiment that accompanying drawing describes is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In describing the invention, term " inner side ", " outside ", " longitudinally ", " laterally ", " on ", D score,
" push up ", the orientation of the instruction such as " end " or position relationship are based on orientation shown in the drawings or position relationship, be only for
Be easy to describe the present invention rather than require the present invention must with specific azimuth configuration and operation, therefore it is not intended that
Limitation of the present invention.
Describing foaming machine according to embodiments of the present invention below with reference to Fig. 1-Figure 29, described foaming machine is for prepackage
Assembly 200 foams.Foaming machine for foaming refrigeration plant (such as refrigerator or refrigerator-freezer) comes this below
Invention illustrates, and the most pre-arrangement 200 includes case shell 220 and at the inner bag 230 being located within case shell 220, case
Define foaming space 210 between shell 220 and inner bag 230, in this foaming space 210, be reserved with bleeding point 211, as
Shown in Fig. 3.It is, of course, understood that be not limited to for refrigeration plant according to the foaming machine of the present invention, also
May be used for the equipment that other type of needs carry out foaming.
As shown in Fig. 1-Figure 29, foaming machine according to embodiments of the present invention, including foaming mould the 1, first air exhauster
Structure the 2, second extraction sector 3 and the first negative pressure provide device 4.
As Figure 1-Figure 2, foaming mould 1 includes the first mould 11 and the second mould 12, the first mould 11 and the second mould 12
Cooperate to limit the die cavity 13 being suitable to accommodate pre-arrangement 200.Suction interface 5 it is reserved with on foaming mould 1.
First extraction sector 2 is connected by suction interface 5 with die cavity 13, for extracting the gas in die cavity 13 out, alternatively,
First extraction sector 2 can be exhaust tube.In second extraction sector 3 is located at foaming space 210 and in foaming space 210
Inside being disposed to extend, wherein the second extraction sector 3 connects with die cavity 13.In one embodiment of the invention, second take out
Mechanism of qi structure 3 through the bleeding point 211 in foaming space 210 and connects with die cavity 13.First negative pressure provide device 4 with
First extraction sector 2 is connected for forming negative pressure in foaming space 210.
Thus, when starting the first negative pressure offer device 4, the gas in die cavity 13 is extracted out with shape by the first extraction sector 2
Becoming negative pressure, the gas in foaming space 210 is pressed in die cavity 13 by the second extraction sector 3 simultaneously, thus can will send out
Bubble forms uniform air negative pressure in space 210, it is to avoid air remains and penetrates in foamed material and forms big pore,
Have impact on the heat insulation effect of product after foaming.
Foaming machine according to embodiments of the present invention, by using the second extraction sector being disposed to extend in foaming space,
Make air negative pressure can be delivered to uniformly foam in space, thus the heat-insulating property of the heat-insulation layer obtained after expanding be more preferable,
And foaming raw material can be saved, reduce cost.
In one embodiment of the invention, foaming machine farther includes sealing member (not shown), and sealing member is located at
To seal die cavity 13 on contact surface between one mould 11 and the second mould 12, thus can in space of foaming in foaming process
Keep low pressure and then ensure foaming quality.Alternatively, sealing member is sealing gasket.Specifically, sealing member may be provided in first
On the surface contacted with the second mould 12 of mould 11, or it is located on the surface contacted with the first mould 11 of the second mould 12,
Can also be respectively provided with in contact surface on the first mould 11 and the second mould 12.
In the further embodiment of the present invention, as in figure 2 it is shown, foaming machine farther includes seal casinghousing 6, outer
Extraction sector 7 and the second negative pressure provide device 8, and wherein seal casinghousing 6 is closely enclosed within foaming mould 1 and the first negative pressure
The outside of device 4, outer extraction sector 7 and the intracavity inter-connection of seal casinghousing 6, and the second negative pressure is provided to provide device 8
It is connected with outer extraction sector 7 in the inner chamber of seal casinghousing 6, form negative pressure.So, the first negative pressure provides device 4
Gas in die cavity 13 and foaming space 210 is extracted into the interior intracavity of seal casinghousing 6, and the second negative pressure provides device 8 to lead to
Cross outer extraction sector 7 to be extracted out by the gas of intracavity in seal casinghousing 6, so that the gas in the die cavity 13 of foaming mould 1
Force down in seal casinghousing 6 inner chamber with improve pre-arrangement 200 place die cavity 13 in vacuum.
In some embodiments of the invention, seal casinghousing 6, outer extraction sector 7 and the second negative pressure provide device 8 respectively
For multiple (not shown).Multiple seal casinghousings 6 are the most sheathed, in order to limit and be positioned at successively capsul
Multiple sealing cavitys between body 6, wherein to be closely enclosed within foaming mould 1 and first negative for the seal casinghousing 6 of innermost layer
Pressure provides the outside of device 4.Multiple second negative pressure provide devices 8 to be separately positioned in multiple sealing cavity and outermost
Outside seal casinghousing 6, and multiple outer extraction sector with multiple second negative pressure provide device 8 one_to_one corresponding, and each outside
Each second negative pressure is provided device 8 to connect in the sealing cavity of the internal layer of its place sealing cavity by extraction sector, with
Make the inner chamber of outermost layer seal casinghousing 6 define a barometric gradient successively decreased to the foaming space 210 of innermost layer, enter
And further increase the vacuum in the die cavity 13 at pre-arrangement 200 place.
As shown in Figure 3 and Figure 4, in one embodiment of the invention, the second extraction sector 3 includes airway 30 He
Fixed mechanism 31, in wherein airway 30 is fixed on foaming space 210 by fixed mechanism 31 and in foaming space 210
Inside it is disposed to extend.One end of airway 30 connects through the bleeding point 211 in foaming space 210 with die cavity 13, this
Sample, when the first negative pressure provides device 4 to start, the gas in foaming space 210 enters into die cavity 13 by airway 30
In and be drawn out of by the first extraction sector 1 such as exhaust tube together with the gas in die cavity 13, thus foam space
The gas of 210 discharges minimizing residual in time, so that foaming interior volume forms uniform negative pressure.
Airway 30 according to the present invention will be described with multiple embodiments below.It should be noted that following all to lead
The profile of trachea is to illustrate as a example by pipe, but it is understood that, the airway of the present invention is not limited to pipe,
The cross-sectional circumference shape of airway can also be tetragon or more than the polygon on four limits and similar shape, all falls
Enter in protection scope of the present invention.It addition, be the most all located at the case shell 220 of pre-arrangement 200 with airway 30
Illustrate as a example by corner part, and airway 30 is along the longitudinal direction extension of case shell 220.But it is understood that, this
Invention is not limited to this, and airway 30 can also be located at other positions in foaming space 210, each falls within the present invention
Protection domain in.It addition, one of ordinary skilled in the art will also be appreciated that according to embodiments of the present invention
Airway 30 can include multiple and be located at such as corner in case shell 220, correspondingly, on pre-arrangement 200 simultaneously
It also is provided with multiple bleeding point 211, and multiple airway 30 all connects with die cavity 13 after multiple bleeding points 211.
Embodiment one,
In the present embodiment, airway indicates with 30a.As shown in Figure 5-Figure 8, in airway 30a, it is provided with dividing plate 301a,
Axially extending the inner chamber of airway 30a to be at least divided into two spaces along airway 30a of dividing plate 301a, and can rise
Effect to the intensity supporting airway 30a.The tube wall of airway 30a is formed with multiple pore 302a, to add
Strong effect of being bled in each region in foaming space 210.Alternatively, pore 302a is along the axial direction of airway 30a
Linear or spiral distribution.
As shown in Figure 5 and Figure 6, in an example of the present invention, the cross section of dividing plate 301a is rectangle, namely
Say, dividing plate 301a can be a flat board so that the cross section of airway 30a is about in " day " type, i.e. dividing plate 301a will
Airway 30a inner chamber divide into two spaces.As shwon in Figures 5 and 6, pore 302a is along the axle of airway 30a
Multiple row such as two row or three row are had to directional spreding.Alternatively, multiple row pore 302a can be around described airway 30a's
Circumference is uniformly distributed.Or when airway 30a is located at the corner of case shell 220, pore 302a concentrates on airway
30a towards foaming space 210 in side.
As shown in Figure 7 and Figure 8, in an example of the present invention, the cross section of dividing plate 301a is cross.The most just
Being to say, dividing plate 301a is configured to make the cross section of airway 30a about in " field " type, i.e. dividing plate 301a is by inducing QI
Pipe 30a inner chamber divide into four spaces.As shown in Figures 7 and 8, pore 302a is along the axial side of airway 30a
To distribution, specifically at least provided with string pore 302a in each space of airway 30a inner chamber.
In another example of the present invention, the inner chamber of airway 30a also can be divided into three spaces by dividing plate 301a, its
In the cross section in each space be fan-shaped.Certainly, the setting of dividing plate 301a is not limited to this.Other realities in the present invention
Executing in example, the inner chamber of airway 30a can also be divided into more than four spaces by dividing plate 301a.
In some embodiments of the invention, pore 302a is uniformly distributed along the axial direction of airway 30a.Alternatively,
The adjacent distance between two pore 302a is 30-200mm.Still optionally further, two adjacent pore 302a
Between distance be 50mm.
In other embodiments of the present invention, from first end of airway 30a, (upper end Fig. 3 and Fig. 4, i.e. leans on
One end of nearly bleeding point 211) to second end (i.e. away from one end of bleeding point 211) relative with the first end, pore
302a is gradually incremented by along the axial directional distribution density of airway 30a, and the distance between two adjacent pore 302a
For 30-200mm.
Alternatively, adjacent distance L between two pore 302a is:
L=30+ (20 × n)；
Wherein, n is natural number and 0≤n < 9, from first end of airway 30a to the axially adjacent pore of the second end
Distance take successively: n=8,7,6 ... .., 0.
By making first end of airway 30a be incremented by the density between the axially adjacent pore of the second end, can compensate for inducing QI
The barometric gradient vertically of pipe 30a, can be transferred to negative pressure foam in space 210 everywhere with being more uniformly distributed.
In some embodiments of the invention, airway 30a is provided with the ventilative filtering layer for covering multiple pore 302a
32 (not shown), ventilative filtering layer 32 can stop that while through air expanded material enters from pore 302a leads
In trachea 30a.Alternatively, ventilative filtering layer is breathable adhesive tape.Certainly, the present invention is not limited to this, and the present invention also may be used
To be HEPA filter paper, gluing or band gum etc., can stop that while through air expanded material enters as long as meeting
Requirement in airway 30a.
Embodiment two,
In the present embodiment, airway indicates with 30b.As shown in Fig. 9-Figure 16, the tube wall of airway 30b is formed
Have along its axially extended air drain 301b, so that the cross section of airway 30b is in " C " shape, to strengthen foaming space
The effect of bleeding in each region in 210.Alternatively, in an example of the present invention, air drain 301b is with along airway
The flange that 30b extends radially outwardly, as shown in Figure 9 and Figure 10.
As it is shown in figure 9, in an example of the present invention, from first end of airway 30b (i.e. near bleeding point 211
One end) to second end (i.e. away from one end of bleeding point 211) relative with the first end, the width edge of air drain 301b
The axial direction of airway 30b is uniform.Alternatively, the width of air drain 301b is 1-3mm.Still optionally further, gas
The width of groove 301b is 1.5mm.
In the another one example of the present invention, from first end (i.e. near one end of bleeding point 211) of airway 30b
To second end (i.e. away from one end of bleeding point 211) relative with the first end, the width of air drain 301b is along airway 30b
Axial direction gradually subtract greatly (not shown).Thus, it is possible to the barometric gradient compensated in the axial direction of airway 30b,
Can be transferred to negative pressure with being more uniformly distributed foam in space everywhere.
In the some of them embodiment of the present invention, the width of the air drain 301b of the end of airway 30b is
The width of the air drain 301b at 0.5-1.5mm, and second end of airway 30b is 1.5-3mm.Alternatively, airway
The width of the air drain 301b of the end of 30b is 1mm, and the width of the air drain 301b at second end of airway 30b
Degree is 2mm.
Certainly, one of ordinary skilled in the art is it is understood that due to the C of the airway 30b in the present embodiment
Type air drain 301b is owing to using extrusion process in actual production, and under naturalness, groove width is steady state value, but actual dress
In joining, groove width gradual change in the axial direction can be made by the clamping degree changing fixing device, it is also possible to attached by other
The collar of made component, such as different-diameter retrains its groove width, also can realize.
In some examples of the present invention, airway 30b is provided with the ventilative filtering layer 32 for covering air drain 301b, as
Shown in Figure 15-16.Ventilative filtering layer 32 can stop that while through air expanded material enters from air drain 301b leads
In trachea 30b.Alternatively, ventilative filtering layer is breathable adhesive tape.Certainly, the present invention is not limited to this, and the present invention also may be used
To be HEPA filter paper, gluing or band gum etc., can stop that while through air expanded material enters as long as meeting
Requirement in airway 30b.
In some examples of the present invention, as shown in Figure 11-Figure 12, in airway 30b coaxially and rotatably
It is provided with inner sleeve 302b, the tube wall of inner sleeve 302b is formed along its axially extended notch 303b.So, need
Will be to when bleeding in foaming space 210, the air drain 301b of the notch 303b and airway 30a of inner sleeve 302b is directed at,
Thus, in foaming space 210, the gas in each region is drawn out of by airway 30b, thus negative pressure can be uniformly transferred
Arrive everywhere.And at the end of bleeding the gas in foaming space 210, inner sleeve 302b can be in airway 30b inward turning
Turning predetermined angular, the notch 303b of inner sleeve 302b is no longer directed at the air drain 301b of airway 30a, thereby turns off
The air drain 301b of airway 30b, and then can prevent the expanded material filled from entering airway 30b and remaining is bled
In mechanism.
Embodiment three,
In the present embodiment, airway indicates with 30c.As shown in Figure 17-Figure 18, airway 30c includes open tube
301c and card article 302c, wherein, the tube wall of open tube 301c is provided with along its axially extended opening 3010, card article
302c is slidably disposed on open tube 301c to open and closes this opening 3010.Alternatively, card article 302c with open
Mouth pipe 301c connects in the way of chute cooperation.
With the inner sleeve in embodiment two similarly, needing when bleeding in foaming space 210, card article 302c is drawn out of,
Thus, in foaming space 210, the gas in each region is drawn out of by open tube 301c, thus negative pressure can be uniformly transferred
Arrive everywhere.And at the end of bleeding the gas in foaming space 210, card article 302c is inserted into and is engaged to open tube
On the opening 3010 of 301c, thereby turn off airway 30c, and then can prevent the expanded material filled from entering airway
In 30c and remaining extraction sector.
Similarly, in some embodiments of the invention, airway 30c can be provided with for covering the ventilative of opening 3010
Filtering layer 32 (not shown), ventilative filtering layer 32 can stop that while through air expanded material enters from opening 3010
Enter in airway 30c.Alternatively, ventilative filtering layer is breathable adhesive tape.Certainly, the present invention is not limited to this, the present invention
Can also is that HEPA filter paper, gluing or band gum etc., expanded material can be stopped while through air as long as meeting
Enter the requirement in airway 30c.
Below with reference to Figure 19-Figure 29, the fixed mechanism 31 according to the present invention being described, wherein fixed mechanism 31 is fixed
The airway 30 airway 30a in above-described embodiment one as a example by illustrate, it is to be understood that other are implemented
Airway or other kinds of pipe fitting in example can use the fixed mechanism 31 of the present invention to be fixed too, this
Bright description will will not enumerate.
In one embodiment of the invention, fixed mechanism indicates with 31a, as shown in Figure 19-Figure 24, and fixing machine
Structure 31a includes substrate 311a and fixed claw 312a, and wherein, substrate 311a is located on pre-arrangement 200, fixed claw
312a deformable ground is located on substrate 311a for clamping airway 30.Wherein, substrate 311a can be to be located at prepackage
Plate object on some sidewall of assembly 200, as shown in Figure 19-Figure 24, this substrate can be curve form so that
Fixing fixed claw 312a.Certainly, substrate 311a can also be some side plate such as right plate (figure of pre-arrangement 200
Do not show).
Alternatively, fixed claw 312a is axially spaced from each other along airway 30 of multiple and multiple fixed claw 312a,
As shown in figure 22.Thus, airway 30 is axially fixed on the case shell 220 of pre-arrangement 200 along it, with
Pumping process keep stable.Still optionally further, the axial spacing of adjacent two fixed claw 312a is 300mm.
In another embodiment of the present invention, fixed mechanism indicates with 31b, as shown in Figure 25-Figure 29, fixing
Mechanism 31 include side plate 311b and wedging latch 312b, its latus inframedium 311b be located on pre-arrangement 200 and with prepackage
Being formed with predetermined gap between assembly 200, one end of wedging latch 312b is inserted in predetermined gap and other end clamping is led
Trachea 30.Wherein, side plate 311b can be the plate object being located on some sidewall of pre-arrangement 200, such as figure
Shown in 19-Figure 24, this substrate can be curve form to fix wedging latch 312b.Certainly, side plate 311b also may be used
Think some side plate such as right plate (not shown) of pre-arrangement 200.
Specifically, as shown in figure 29, wedging latch 312b includes: body, wedging portion 3123, location division 3124 and
Limiting section 3125, wherein body includes mutually perpendicular first plate 3121 and the second plate 3122, and wedging portion 3123 is from
The outer of one plate 3121 stretches out, and location division 3124 is extended from the second plate 3122 and parallel with the first plate 3121,
Limiting section 3125 is located between wedging portion 3123 and the first plate 3121 and recessed along the direction parallel with the second plate 3122.
Wherein, wedging portion 3123 is inserted in the predetermined gap between side plate 311b and pre-arrangement 200, and airway 30
It is positioned between location division 3124 and body in the space limited, as shown in figure 28.
Alternatively, wedging latch 312b is multiple and multiple wedging latch 312b being axially spaced along airway 30
Open, as shown in figure 25.Thus, airway 30 is axially fixed on the case shell 220 of pre-arrangement 200 along it,
To keep stable in pumping process.Still optionally further, the axial spacing of adjacent two wedging latch 312b is
300mm。
Below with reference to Fig. 1, Fig. 2 and Figure 30, a kind of foam process according to embodiments of the present invention, described foaming are described
Technique uses the foaming machine described in above-described embodiment.
Foam process according to embodiments of the present invention, comprises the following steps:
(1) the second extraction sector 3 is installed in pre-arrangement 200 in the foaming space 210 limited；
(2) in pre-arrangement 200 is inserted foaming mould 1 and foaming mould 1 is sealed and reserves suction interface 5,
Wherein suction interface 5 is connected with the first end of the second extraction sector 3；
(3) one end of the first extraction sector 2 is connected through foaming mould 1 with suction interface 5, the first extraction sector
The other end of 2 and the first negative pressure provide device 4 to be connected；
(4) starting the first negative pressure provides device 4 to make the as little as 0.99-0.01 times atmospheric pressure of air pressure drop in foaming space 210
Qiang Shi, fills expanded material in foaming space 210.
The foam process of a kind of refrigeration plant according to embodiments of the present invention, uses the foaming work described in above-described embodiment
Skill, wherein, pre-arrangement 200 includes case shell 220 and is located at the inner bag 230 within case shell 220, case shell 220 interior
The region limited between the outer wall of wall and inner bag 230 is as foaming space 210.Wherein, case shell 220 and inner bag 230 pass through
The modes such as bolt, riveting, gluing assemble.
Foam process according to embodiments of the present invention, by the foaming machine described in employing above-described embodiment, it is possible to decrease send out
Foam during bubble the air pressure in space, thus obtains the more preferable heat-insulation layer of heat-insulating property.Simultaneously as foaming space
In gas uniformly taken away, aerofluxus will not be caused smooth and the partial high pressure that produces, and then avoid gas and stretch into and send out
Foam material forms big pore, it is ensured that foaming quality, reduce the time cycle of foaming simultaneously, improve production capacity.
Employing foam process according to an embodiment of the invention is described to refrigeration plant example below with reference to Fig. 1-Figure 30
The process foamed such as the carrying out of refrigerator.
As shown in Fig. 3, Figure 19-Figure 27, two airways 30 are respectively provided at left side wall 221 and the right side of case shell 220
Corner between sidewall 222 and front side 223, and two bleeding points 211 are respectively provided at front side upper of case shell 220
Beam position, two airways 30 all connect with die cavity 13 after multiple bleeding points 211.
Then, as shown in fig. 1, by foaming mould in pre-arrangement 200 is inserted foaming mould 1 and by sealing member
1 seals, and to ensure the effect of bleeding in foaming mould 1, reserved suction interface 5 on foaming mould 1, first bleeds
It is internal that mechanism 2 connects die cavity 13 for exhaust tube and one end through suction interface 5, can be simultaneously by leading during to ensure to bleed
Gas in foaming space 210 is taken away by trachea 30, and the other end of exhaust tube connects the first negative pressure provides device 4.
Now, starting the first negative pressure provides device 4, makes foaming space 210 by the first extraction sector 2 and airway 30
Air pressure drop as little as 0.99-0.01 times of atmospheric pressure time, to foaming space 210 in fill expanded material, material to be foamed
After material fully expands and is full of foaming space, wait cooled and solidified, thus complete foaming process, be made for refrigeration and set
Standby heat-insulation layer.
In another embodiment of the present invention, as in figure 2 it is shown, be provided with one layer of seal casinghousing in the outside of foaming mould 1
6, outer extraction sector 7 and the second negative pressure provide device 8, and wherein seal casinghousing 6 is closely enclosed within foaming mould 1 and the
One negative pressure provides the outside of device 4, outer extraction sector 7 and the intracavity inter-connection of seal casinghousing 6, and the second negative pressure to carry
It is connected with outer extraction sector 7 in the inner chamber of seal casinghousing 6, form negative pressure for device 8.So, the first negative pressure carries
Gas in die cavity 13 and foaming space 210 is extracted into the interior intracavity of seal casinghousing 6 for device 4, and the second negative pressure provides
The gas of intracavity in seal casinghousing 6 is extracted out by device 8 by outer extraction sector 7, so that the die cavity of foaming mould 1
Air pressure in 13 is less than the inner chamber of seal casinghousing 6 with the vacuum in the die cavity 13 at pre-arrangement 200 place of raising.
Alternatively, seal casinghousing can be also multilamellar, and outer extraction sector 7 and the second negative pressure provide device 8 the most multiple
(not shown).Wherein, multiple seal casinghousings 6 are the most sheathed, in order to limit to be positioned at and successively seal
Multiple sealing cavitys between housing 6, wherein the seal casinghousing 6 of innermost layer is closely enclosed within foaming mould 1 and first
Negative pressure provides the outside of device 4.Multiple second negative pressure provide devices 8 to be separately positioned in multiple sealing cavity and outermost
Outside side seal housing 6, and multiple outer extraction sector provides device 8 one_to_one corresponding with multiple second negative pressure, and each
Each second negative pressure is provided device 8 to connect in the sealing cavity of the internal layer of its place sealing cavity by outer extraction sector,
So that the inner chamber of outermost layer seal casinghousing 6 to innermost layer foaming space 210 define a barometric gradient successively decreased,
And then further increase the vacuum in the die cavity 13 at pre-arrangement 200 place.
In the description of this specification, reference term " embodiment ", " some embodiments ", " schematically implement
Example ", " example ", the description of " concrete example " or " some examples " etc. mean to combine this embodiment or example
The specific features, structure, material or the feature that describe are contained at least one embodiment or the example of the present invention.?
In this specification, the schematic representation of above-mentioned term is not necessarily referring to identical embodiment or example.And, retouch
Specific features, structure, material or the feature stated can be with properly in any one or more embodiments or example
Mode combine.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: do not taking off
In the case of the principles and objective of the present invention, these embodiments can be carried out multiple change, revise, replace and modification,
The scope of the present invention is limited by claim and equivalent thereof.
Claims (12)
1. a foaming machine, for foaming pre-arrangement, defines foaming space in described pre-arrangement, its
Being characterised by, described foaming machine includes:
Foaming mould, described foaming mould includes that the first mould and the second mould, described first mould and the second mould cooperate with limit
Make the die cavity being suitable to accommodate described pre-arrangement；
First extraction sector, described first extraction sector connects with described die cavity for extracting the gas in described die cavity out；
Second extraction sector, extends cloth in described second extraction sector is located at described foaming space and in described foaming space
Putting, wherein said second extraction sector connects with described die cavity, and described second extraction sector includes: airway, described in lead
Trachea is fixed in described foaming space by fixed mechanism, the tube wall of described airway is formed along it axially extended
Air drain is so that the cross section of described airway is in " C " shape, and described airway is provided with the ventilative filter for covering described air drain
Layer, and from the first end of described airway to second end relative with described first end, the width of described air drain along described in lead
The axial direction of trachea gradually subtracts greatly, and the width of the described air drain of the end of described airway is 0.5-1.5mm, and
The width of the described air drain at the second end of described airway is 1.5-3mm；With
First negative pressure provides device, described first negative pressure to provide device to be connected at described with described first extraction sector
Bubble forms negative pressure in space.
Foaming machine the most according to claim 1, it is characterised in that the described gas of the end of described airway
The width of groove be the width of the described air drain at 1mm, and the second end of described airway be 2mm.
Foaming machine the most according to claim 2, it is characterised in that at described inducing QI inner coaxial tube and rotatably
It is provided with inner sleeve, the tube wall of described inner sleeve is formed along its axially extended notch.
Foaming machine the most according to claim 1, it is characterised in that described fixed mechanism includes:
Substrate, described substrate is located on described pre-arrangement；With
Fixed claw, described fixed claw deformable ground sets on the substrate for airway described in clamping.
Foaming machine the most according to claim 4, it is characterised in that described fixed claw is multiple and multiple fixed claws
Axially spaced from each other along described airway.
Foaming machine the most according to claim 1, it is characterised in that described fixed mechanism includes:
Side plate, described side plate be located on described pre-arrangement and and described pre-arrangement between be formed with predetermined gap；With
Wedging latch, one end of described wedging latch is inserted in described predetermined gap and airway described in other end clamping.
Foaming machine the most according to claim 6, it is characterised in that described wedging latch includes:
Body, described body includes mutually perpendicular first plate and the second plate；
Wedging portion, described wedging portion stretches out from the outer of described first plate；
Location division, described location division is extended from described second plate and parallel with described first plate；With
Limiting section, described limiting section is located between described wedging portion and described first plate and recessed along the direction parallel with the second plate
Enter；
Wherein, described wedging portion is inserted in the predetermined gap between described side plate and pre-arrangement, and described airway quilt
It is positioned between described location division and described body in the space limited.
Foaming machine the most according to claim 7, it is characterised in that described wedging latch is multiple and multiple wedgings
Latch is axially spaced from each other along described airway.
Foaming machine the most according to claim 1, it is characterised in that described first extraction sector is exhaust tube.
10. a foam process, it is characterised in that use according to the foaming machine according to any one of claim 1-9,
And comprise the following steps:
(1) in the foaming space limited in the second extraction sector is installed to described pre-arrangement；
(2) seal in pre-arrangement being inserted described foaming mould and by described foaming mould and reserve suction interface, wherein
Described suction interface is connected with the first end of described second extraction sector；
(3) one end of described first extraction sector is connected through described foaming mould with described suction interface, described first
The other end of extraction sector provides device to be connected with negative pressure；
(4) starting described negative pressure provides device to extract the gas in described foaming space out；
(5) in described foaming space, expanded material is filled.
11. described foam process according to claim 10, it is characterised in that the air pressure drop in described foaming space
Expanded material is filled in the as little as 0.99-0.01 times backward described foaming space of atmospheric pressure.
The foam process of 12. 1 kinds of refrigeration plants, it is characterised in that use according to sending out described in claim 10 or 11
Bubble technique, wherein,
Described pre-arrangement includes case shell and is located at the inner bag within described case shell, the inwall of described case shell and the outer wall of inner bag
Between the region that limits as foaming space.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410387140.9A CN104260266B (en) | 2011-01-05 | 2011-01-05 | The foam process of foaming machine, foam process and refrigeration plant |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410387140.9A CN104260266B (en) | 2011-01-05 | 2011-01-05 | The foam process of foaming machine, foam process and refrigeration plant |
| CN2011100078356A CN102173057A (en) | 2011-01-05 | 2011-01-05 | Foaming equipment, foaming process and foaming process for refrigeration equipment |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2011100078356A Division CN102173057A (en) | 2011-01-05 | 2011-01-05 | Foaming equipment, foaming process and foaming process for refrigeration equipment |
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| CN104260266A CN104260266A (en) | 2015-01-07 |
| CN104260266B true CN104260266B (en) | 2016-10-05 |
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| DE10243873A1 (en) * | 2002-09-21 | 2004-04-01 | Electrolux Home Products Corporation N.V. | Foaming out a hollow element, comprises feeding in foam through a primary opening while simultaneously sucking out air via a further opening |
| CN101474842B (en) * | 2009-01-24 | 2010-10-06 | 南京红宝丽股份有限公司 | Method for improving filling property of rigid polyurethane foam plastics |
| IT1393100B1 (en) * | 2009-02-20 | 2012-04-11 | Crios S P A Ora Cannon Ergos S P A | METHOD AND EQUIPMENT FOR VACUUM FOAMING OF REFRIGERATED CABINETS. |
| CN101865584A (en) * | 2009-04-14 | 2010-10-20 | 博西华家用电器有限公司 | Refrigerator |
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