CN107053648B - Upward type internal cooling structure for multilayer co-extrusion film blowing machine - Google Patents
Upward type internal cooling structure for multilayer co-extrusion film blowing machine Download PDFInfo
- Publication number
- CN107053648B CN107053648B CN201710384342.1A CN201710384342A CN107053648B CN 107053648 B CN107053648 B CN 107053648B CN 201710384342 A CN201710384342 A CN 201710384342A CN 107053648 B CN107053648 B CN 107053648B
- Authority
- CN
- China
- Prior art keywords
- wind
- interior cold
- cold wind
- annular
- guiding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/28—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of blown tubular films, e.g. by inflation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The surface of a kind of upward type internal cooling structure for multilayer co-extrusion film blowing machine, including blown-film die, blown-film die is equipped with interior cold wind ring, and interior cold wind is equipped with the interior cold wind chamber of circular ring shape, and the surrounding edge of interior cold wind ring is formed with interior cold air outlet；It is equipped with vertical discharge pipe and vertical blast pipe in blown-film die center, air inlet tube wall is covered in outlet air tube wall periphery, and the annular gap entered the wind between tube wall and outlet air tube wall is formed as total air intake passage, the total air-out passage of the segment dislocation of discharge pipe；Discharge pipe extends up to above interior cold wind ring from blown-film die；The interior cold air outlet of the interior cold wind ring is obliquely downward；First annular wall is additionally provided with above interior cold wind ring, first annular wall offers multiple exhaust vents；The second annular wall is additionally provided with below interior cold wind ring；The recycling wind-guiding disk of circular ring shape is equipped between the second annular chamber and blown-film die.The present invention can improve film bubble internal layer cooling effect and not influence film bubble operation stability.
Description
Technical field
The invention belongs to the technical fields of co-extrusion film blowing machine, and in particular in a kind of upward type co-extrusion film blowing machine
Air-cooled structure.
Background technique
Plastic film can be produced using upward type blowing, in process of production, circle of the plastics melt from head
Annular film bubble extrusion squeezes out upwards and is formed film bubble, and film bubble is constantly moved upwards by traction, and is located at the cooling beside film bubble
Vane then constantly blows out upward air, and on the one hand air plays the role of supporting & stablizing to film bubble, more main aspect is to film
Puff is to cooling effect.
What the film bubble of co-extrusion film blowing machine production was combined by inside and outside laminated plastics material, each layer material is both needed to obtain
Synchronous cooling.Although the existing existing outer cold wind ring of co-extrusion film blowing machine (is located at outside film bubble, blows out the cooling air of centripetal direction
Stream is cooled down from film bubble outside), and there is interior cold wind ring (to be located inside film bubble, the cooling air-flow of centrifugal direction is blown out, from film
Bubble the inside is cooled down), however, making the cooling air-flow inside film bubble than the cooling air outside film bubble due to space limiting factor
Stream is more difficult to tissue and control (the film bubble inner surface in such as below cold wind ring is difficult to direct cooling), thus, in the prior art,
Multi-layer co-extruded obtained film bubble is often preferable close to the material cooling effect of outer layer, and film bubble is past close to the material cooling effect of internal layer
Past poor, when bubble thickness is larger, the speed of production of film is higher, this species diversity is become apparent, therefore further results in film
The condensation of bubble internal layer material, crystalline quality are poor.In the prior art, in order to improve the cooling efficiency of film bubble internal layer, can only increase in
The wind speed of cold wind ring, but wind speed is excessive, and meaning requires the wind pressure inside cooling air ring higher, and wind pressure gets over Gao Zeyue and is unfavorable for gas
Stream is uniform, stablizes, and then is easy to make film bubble fluctuation of service, this also affects blowfilm shaping quality.
Summary of the invention
A kind of upward type internal cooling structure for multilayer co-extrusion film blowing machine is provided it is an object of the invention to overcome disadvantages mentioned above, it
Film bubble internal layer cooling effect can be improved and do not influence film bubble operation stability.
Its purpose can be realized by following scheme: the upward type internal cooling structure for multilayer co-extrusion film blowing machine includes blown-film die,
Blown-film die is equipped with circular ring shape film bubble extrusion upward, and the surface of blown-film die is equipped with interior cold wind ring, interior cold wind ring
Interior cold wind chamber equipped with circular ring shape, the surrounding edge of interior cold wind ring are formed with interior cold air outlet；It is equipped in blown-film die center perpendicular
To discharge pipe and vertical blast pipe, air inlet tube wall covers in outlet air tube wall periphery, enters the wind tube wall and outlet air tube wall
Between annular gap be formed as total air intake passage, the total air-out passage of the segment dislocation of discharge pipe；Discharge pipe is from blown-film die
It extends up to above interior cold wind ring；It is mainly characterized by, and the interior cold air outlet of the interior cold wind ring is obliquely downward；Inside
It is additionally provided with first annular wall above cold wind ring, first annular wall is set in the periphery of discharge pipe, first annular wall and discharge pipe pipe
First annular chamber is formed between wall, and multiple first intercommunicating pores are equipped between first annular chamber and the interior cold wind chamber of interior cold wind ring, the
The top of one annular chamber is equipped with seal cover board；The upper port of the discharge pipe is exposed above seal cover board；First annular wall is opened
Equipped with multiple exhaust vents；The second annular wall is additionally provided with below interior cold wind ring, the second annular wall is located above blown-film die, and second
Annular wall is set in the periphery of discharge pipe, and the second annular chamber, the second annular chamber are formed between the second annular wall and outlet air tube wall
Multiple second intercommunicating pores are equipped between the interior cold wind chamber of interior cold wind ring；Annulus is equipped between the second annular chamber and blown-film die
The diameter of the recycling wind-guiding disk of shape, recycling wind-guiding disk is less than the diameter of the circular ring shape film bubble extrusion；Recycle wind-guiding circle
Disk is made of the upper disc of circular ring shape and the lower disc of circular ring shape, and upper disc and lower disc are covered in the periphery of the discharge pipe；On
Disc and lower disc are formed with the recycling wind guide chamber of circular ring shape after up and down direction clamping, the outer edge of upper disc and lower disc it
Between be formed as there are gap circular ring shape recycling wind-guiding seam；More horizontal directions are additionally provided with inside recycling wind-guiding disk to prolong
Recovery levels guide duct, the more vertically extending vertical wind-guiding tubules stretched；Each recovery levels guide duct is to recycle wind-guiding circle
It is distributed centered on the center of circle of disk in homogeneous radiation shape, the center axis extension direction of each recovery levels guide duct is recycling wind-guiding
The radial direction of disk；The quantity of vertical wind-guiding tubule is identical with the quantity of recovery levels guide duct, vertical wind-guiding tubule and recycle-water
The alternate arrangement of flat guide duct, the floor projection position of every vertical wind-guiding tubule is located at corresponding adjacent two recovery levels wind-guidings
In fan-shaped region between pipe, and vertical wind-guiding tubule is vertical with corresponding adjacent two recovery levels guide ducts composition antarafacial；
The distal end of every recovery levels guide duct is directly connected to the recycling wind guide chamber, the proximal part of every recovery levels guide duct
Directly it is connected to the lumen of the discharge pipe；The upper end of every vertical wind-guiding tubule is directly connected to second annular chamber, often
The lower end of the vertical wind-guiding tubule of root is directly connected to total air intake passage.
The present invention has the following advantages and effects:
One, for the present invention during blown film, interior cold airflow enters the second annular through vertical wind-guiding tubule from total air intake passage
Chamber, by the second annular chamber after the second intercommunicating pore enters the interior cold wind chamber of interior cold wind ring, interior cold airflow is organized into two strands,
Wherein main air continues up operation, by the first intercommunicating pore enter first annular chamber, by first annular wall it is multiple go out
Air holes blows to film bubble, implements to cool down to film bubble, then the upper port through discharge pipe enters total air-out passage；Secondary air flow is by interior
The interior cold air outlet of cold wind ring blows to obliquely downward, then the annular gap between film bubble and the second annular wall flows downward,
Until reaching the recycling wind-guiding seam of recycling wind-guiding disk, and the recycling wind guide chamber for entering recycling wind-guiding disk is stitched by recycling wind-guiding,
Recovered horizontal guide duct enters total air-out passage.Above-mentioned two strands of air-flows are located inside film bubble, while on directly internal cold wind ring
The inner surface of film bubble below square and interior cold wind ring is cooled down, and the cooling effect to film bubble internal layer can be reinforced, and makes film bubble internal layer
With film bubble outer layer cooling effect substantially close to.
Two, importantly, above-mentioned secondary air flow due to the direction of motion downward (contrary with bubble movement), thus
The speed of related movement of air-flow and film bubble is improved, therefore the cooling velocity to film bubble can be improved, improves the crystallization of film bubble internal layer
Quality also creates precondition to improve film bubble extruded velocity.On the other hand, although the relative motion of cooling air-flow and film bubble
Speed improves, but the speed of air-flow itself is not improved, it is meant that the gas pressure inside vane is not necessarily to improve, therefore will not
Influence the stability of film bubble.
Detailed description of the invention
Fig. 1 is the present invention a kind of overall structure and use state diagram of specific embodiment.
Fig. 2 is the partial enlargement diagram of the lower half portion of Fig. 1.
Fig. 3 is the partial enlargement diagram of the middle section of Fig. 1.
Fig. 4 is that the structure of the interior cold wind ring of Fig. 3 and cooling air flow to schematic diagram.
Fig. 5 is that the structure of the recycling wind-guiding disk in Fig. 2 and cooling air flow to schematic diagram.
Fig. 6 is the schematic perspective view of the upper disc in Fig. 5.
Fig. 7 is the present invention looks up structural representation of the upper disc in Fig. 5.
Fig. 8 is the horizontal profile structure schematic diagram of the upper disc in Fig. 7.
Fig. 9 is the schematic diagram of the section structure of the A-A in Fig. 8.
Figure 10 is the schematic diagram of the section structure of the B-B in Fig. 8.
Figure 11 is that the cooling air of the recycling wind guide chamber of recycling wind-guiding disk flows to schematic diagram into total air-out passage.
Specific embodiment
Fig. 1, Fig. 2, upward type internal cooling structure for multilayer co-extrusion film blowing machine shown in Fig. 3 include blown-film die 1, blown-film die 1
Equipped with circular ring shape film bubble extrusion 11 upward, the surface of blown-film die 1 is equipped with interior cold wind ring 2, and interior cold wind ring 2 is equipped with
The interior cold wind chamber 21 of circular ring shape, the surrounding edge of interior cold wind ring 2 are formed with interior cold air outlet 22；It is equipped in 1 center of blown-film die
Vertical discharge pipe 7 and vertical blast pipe 6,6 tube wall of blast pipe are covered in 7 tube wall of discharge pipe periphery, 6 tube wall of blast pipe and outlet air
Annular gap between 7 tube wall of pipe is formed as total air intake passage 61, the total air-out passage 71 of the segment dislocation of discharge pipe 7；Outlet air
Pipe 7 extends up to above interior cold wind ring 2 from blown-film die 1.
Shown in Fig. 4, the interior cold air outlet 22 of the interior cold wind ring is obliquely downward；Shown in Fig. 1, Fig. 3, in interior cold wind ring 2
Top is additionally provided with first annular wall 31, and first annular wall 31 is set in the periphery of discharge pipe 7, first annular wall 31 and discharge pipe 7
First annular chamber 32 is formed between tube wall, and multiple first are equipped between first annular chamber 32 and the interior cold wind chamber 21 of interior cold wind ring and is connected
The top of through-hole 33, first annular chamber 32 is equipped with seal cover board 34；The upper port 710 of the discharge pipe 7 is exposed in seal cover board 7
Top；First annular wall 31 offers multiple exhaust vents 35.
Shown in Fig. 1, Fig. 3, Fig. 4, the second annular wall 41 is additionally provided with below interior cold wind ring 2, the second annular wall 41, which is located at, blows
1 top of film head, the second annular wall 41 are set in the periphery of discharge pipe 7, are formed between 7 tube wall of the second annular wall 41 and discharge pipe
Multiple second intercommunicating pores 43 are equipped between the interior cold wind chamber 21 of second annular chamber 42, the second annular chamber 42 and interior cold wind ring.
Shown in Fig. 1, Fig. 2, it is equipped with the recycling wind-guiding disk 5 of circular ring shape between the second annular chamber 42 and blown-film die 1, returns
The diameter for receiving wind-guiding disk 5 is less than the diameter of the circular ring shape film bubble extrusion 11；
Shown in Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10, wind-guiding disk 5 is recycled by the upper disc 51 and circular ring shape of circular ring shape
Lower disc 52 form, upper disc 51 and 52 sets of the lower disc peripheries in the discharge pipe 7；Upper disc 51 and lower disc 52 are from upper
The recycling wind guide chamber 53 of circular ring shape is formed with after the clamping of lower direction, there are gaps between upper disc 51 and the outer edge of lower disc 52
And be formed as the recycling wind-guiding seam 54 of circular ring shape；The recycling of more horizontal directions extension is additionally provided with inside recycling wind-guiding disk 5
Horizontal guide duct 55, more vertically extending vertical wind-guiding tubules 56；Each recovery levels guide duct 55 is to recycle wind-guiding disk 5
The center of circle centered on be distributed in homogeneous radiation shape, the center axis extension direction of each recovery levels guide duct 55 is recycling wind-guiding
The radial direction of disk；The quantity of vertical wind-guiding tubule 56 is identical with the quantity of recovery levels guide duct 55, is all eight, vertical wind-guiding
The floor projection position of tubule 56 and the alternate arrangement of recovery levels guide duct 55, every vertical wind-guiding tubule 56 is located at corresponding phase
In fan-shaped region between adjacent two recovery levels guide ducts 55, and the central axis of vertical wind-guiding tubule 56 with it is corresponding adjacent
It is vertical that the central axis of two recovery levels guide ducts 55 constitutes antarafacial；
Shown in Figure 10, Figure 11, the distal end of every recovery levels guide duct 55 is directly connected to the recycling wind guide chamber 53,
The proximal part of every recovery levels guide duct 55 is directly connected to the lumen of the discharge pipe 7；
Shown in Fig. 5, Fig. 2, the upper end of every vertical wind-guiding tubule 56 is directly connected to second annular chamber 42, and every perpendicular
It is directly connected to the lower end of wind-guiding tubule 56 with total air intake passage 61.
Above-described embodiment is in use, interior cold airflow enters the second annular chamber through vertical wind-guiding tubule 56 from total air intake passage 61
32, arrow as shown in Figure 1 and Figure 2 is entered the interior cold wind chamber 21 of interior cold wind ring by the second annular chamber 42 by the second intercommunicating pore 43
Afterwards, interior cold airflow is organized into two strands, and wherein main air continues up operation, enters first by the first intercommunicating pore 33
Annular chamber 32 finally blows to film bubble 8, arrow as shown in Figure 2, Figure 3, Figure 4, to film bubble by multiple exhaust vents 35 of first annular wall
8 implement cooling, and then the upper port 710 through discharge pipe 7 enters total air-out passage 71,1 outside of discharge blown-film die, such as Fig. 1, figure
2, arrow shown in Fig. 3；Secondary air flow blows to obliquely downward by cold air outlet 22 in interior cold wind ring, into film bubble 8 and the second ring
Annular gap between shape wall 41 as shown in Figure 1, Figure 2, shown in Fig. 8 arrow, then flows downward, until reaching recycling wind-guiding disk
Recycling wind-guiding seam 54, and by recycling wind-guiding seam 54 enter recycling wind-guiding disks recycling wind guide chambers 53, arrow as shown in figure 11,
Recovered horizontal guide duct 55 enters total air-out passage 71.
Above-described embodiment is in use, in the periphery of film bubble 8 also with outer cold wind ring 9 is arranged with, as shown in Figure 1, i.e. outer cold wind
Ring and inner-cooling structure use simultaneously, cool down simultaneously to the inner surface and the outer surface of film bubble 8.
Claims (2)
1. a kind of upward type internal cooling structure for multilayer co-extrusion film blowing machine, including blown-film die, blown-film die is equipped with circle upward
The surface of annular film bubble extrusion, blown-film die is equipped with interior cold wind ring, and interior cold wind is equipped with the interior cold wind chamber of circular ring shape, interior cold
The surrounding edge of vane is formed with interior cold air outlet；It is equipped with vertical discharge pipe and vertical blast pipe in blown-film die center,
Air inlet tube wall is covered in outlet air tube wall periphery, enter the wind the annular gap between tube wall and outlet air tube wall be formed as always into
Wind channel, the segment dislocation of discharge pipe are total air-out passage；Discharge pipe extends up to above interior cold wind ring from blown-film die；Its
Be characterized in that: the interior cold air outlet of the interior cold wind ring is obliquely downward；First annular wall is additionally provided with above interior cold wind ring, the
One annular wall is set in the periphery of discharge pipe, and first annular chamber is formed between first annular wall and outlet air tube wall, first annular
Multiple first intercommunicating pores are equipped between chamber and the interior cold wind chamber of interior cold wind ring, the top of first annular chamber is equipped with seal cover board；Institute
The upper port for stating discharge pipe is exposed above seal cover board；First annular wall offers multiple exhaust vents；Below interior cold wind ring
It is additionally provided with the second annular wall, the second annular wall is located above blown-film die, and the second annular wall is set in the periphery of discharge pipe, and second
The second annular chamber is formed between annular wall and outlet air tube wall, is equipped between the second annular chamber and the interior cold wind chamber of interior cold wind ring more
A second intercommunicating pore；It is equipped with the recycling wind-guiding disk of circular ring shape between the second annular chamber and blown-film die, recycles wind-guiding disk
Diameter be less than the circular ring shape film bubble extrusion diameter；Wind-guiding disk is recycled by under the upper disc and circular ring shape of circular ring shape
Disc composition, upper disc and lower disc are covered in the periphery of the discharge pipe；Upper disc and lower disc are from shape after up and down direction clamping
At the recycling wind guide chamber for having circular ring shape, be formed as the recycling of circular ring shape between upper disc and the outer edge of lower disc there are gap
Wind-guiding seam；Recycling wind-guiding disk inside be additionally provided with more horizontal directions extension recovery levels guide duct, more it is vertically extending
Vertical wind-guiding tubule；Each recovery levels guide duct is distributed centered on the center of circle for recycling wind-guiding disk in homogeneous radiation shape,
The center axis extension direction of each recovery levels guide duct is to recycle the radial direction of wind-guiding disk；The quantity of vertical wind-guiding tubule and
The quantity of recovery levels guide duct is identical, vertical wind-guiding tubule and the alternate arrangement of recovery levels guide duct, and every vertical wind-guiding is small
The floor projection position of pipe is in the fan-shaped region between corresponding adjacent two recovery levels guide ducts；Every recovery levels
The distal end of guide duct is directly connected to the recycling wind guide chamber, the proximal part of every recovery levels guide duct directly with it is described go out
The lumen of air hose is connected to；The upper end of every vertical wind-guiding tubule is directly connected to second annular chamber, and every vertical wind-guiding is small
The lower end of pipe is directly connected to total air intake passage.
2. upward type internal cooling structure for multilayer co-extrusion film blowing machine according to claim 1, it is characterised in that: vertical wind-guiding tubule
It is vertical that antarafacial is constituted with corresponding two adjacent recovery levels guide ducts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710384342.1A CN107053648B (en) | 2017-05-26 | 2017-05-26 | Upward type internal cooling structure for multilayer co-extrusion film blowing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710384342.1A CN107053648B (en) | 2017-05-26 | 2017-05-26 | Upward type internal cooling structure for multilayer co-extrusion film blowing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107053648A CN107053648A (en) | 2017-08-18 |
| CN107053648B true CN107053648B (en) | 2018-12-21 |
Family
ID=59610776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710384342.1A Active CN107053648B (en) | 2017-05-26 | 2017-05-26 | Upward type internal cooling structure for multilayer co-extrusion film blowing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107053648B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109605720B (en) * | 2018-04-21 | 2020-11-03 | 广东金明精机股份有限公司 | Inner cooling structure of plastic film blowing machine |
| CN112959571A (en) * | 2021-02-04 | 2021-06-15 | 深圳弘臻新材料科技有限公司 | Temperature control air disc for primary forming in PVC heat-shrinkable tube production process |
| CN114474771B (en) * | 2021-12-31 | 2023-09-15 | 无锡倍加德机械科技有限公司 | Multilayer co-extrusion film blowing system for excellent film forming |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3820530A1 (en) * | 1988-06-16 | 1989-12-21 | Reifenhaeuser Masch | DEVICE FOR BLOWING TUBE FILMS, IN PARTICULAR. OF MULTILAYER TUBULAR FILMS |
| US6068462A (en) * | 1997-12-02 | 2000-05-30 | Brampton Engineering, Inc. | Apparatus for continuously forming a blown film |
| CN201192897Y (en) * | 2008-04-02 | 2009-02-11 | 詹文聪 | Cooling air ring of bag blowing machine |
| CN204183891U (en) * | 2014-10-25 | 2015-03-04 | 广东金明精机股份有限公司 | The cooling vane of film blowing device |
-
2017
- 2017-05-26 CN CN201710384342.1A patent/CN107053648B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107053648A (en) | 2017-08-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107053648B (en) | Upward type internal cooling structure for multilayer co-extrusion film blowing machine | |
| CN103604202B (en) | Vertical air conditioner air-supply arrangement | |
| CN105091083B (en) | A kind of vertical air conditioner indoor unit and floor air conditioner | |
| WO2017166935A1 (en) | Indoor air conditioning unit | |
| CN104807077B (en) | A kind of indoor apparatus of air conditioner | |
| CN104456888B (en) | Air-conditioner air supplier and floor air conditioner | |
| CN207594318U (en) | Plastic film blowing machine inner-cooling structure | |
| CN106015046A (en) | Tower fan structure | |
| CN205046230U (en) | Ring air blast chilling device that melt spinning used | |
| CN205689467U (en) | A kind of tower fan structure | |
| CN109605720B (en) | Inner cooling structure of plastic film blowing machine | |
| CN201941161U (en) | Cooling air ring for film blowing machine | |
| CN204278509U (en) | The film blowing device cooling vane of energy adjust flux allocation proportion | |
| CN205735892U (en) | A kind of injection mould water supply and drainage system | |
| CN204172332U (en) | The inner face cooling device of blowing bag film | |
| CN207050085U (en) | Indoor unit of floor type air conditioner | |
| CN201889904U (en) | Closed film bubble internal cooling device for film blowing machine | |
| CN209365159U (en) | Blow molding machine vane | |
| CN206377750U (en) | Air-conditioner set and its indoor set | |
| CN208197557U (en) | Plastic film blowing machine inner-cooling structure | |
| CN104441602B (en) | A kind of blowing vane structure of plastic sheeting | |
| CN105952671A (en) | Centrifugal fan and air conditioner comprising same | |
| CN206625999U (en) | Air-supply arrangement | |
| CN205364518U (en) | Internal cooling structure for multilayer co -extrusion film blowing machine | |
| CN207990793U (en) | Air conditioner indoor unit and air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |