CN104406348A - Air duct protection plate for soft and hard co-extrusion sealing and production method thereof - Google Patents
Air duct protection plate for soft and hard co-extrusion sealing and production method thereof Download PDFInfo
- Publication number
- CN104406348A CN104406348A CN201410711203.1A CN201410711203A CN104406348A CN 104406348 A CN104406348 A CN 104406348A CN 201410711203 A CN201410711203 A CN 201410711203A CN 104406348 A CN104406348 A CN 104406348A
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- China
- Prior art keywords
- soft
- hard
- air duct
- functor
- protection plate
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
- F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
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- 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
- B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
- F25D2317/067—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by air ducts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses an air duct protection plate for soft and hard co-extrusion sealing and a production method thereof. The hard PVC (Polyvinyl Chloride) is adopted to provide the reliable force of connection with a metal component and the stable equipment size and the supporting and traction effect on a soft air duct main body is achieved; the air duct main body is formed by the soft PVC for the circular arc surface which is designed according to the principle of aerodynamics mainly so as to strengthen the function of heat insulation during cold air transfer in a refrigeration system and meanwhile no gap is formed between the soft part and the hard part due to the soft and hard co-extrusion structure and namely that the sealing performance of the cold air transfer can be ensured and the noise during the transfer can be reduced; the air duct protection plate is integrally formed by a soft and hard division and co-extrusion technology and accordingly the soft part and the hard part are good in combination, high in strength and close in structure; the protection plate and the lower surface of an air duct base plate are connected with the edge of the air duct base plate through installation holes and screws to form a wind power transmission channel with the heat insulation, sealing and noise reduction functions.
Description
Technical field
The present invention relates to middle technical field of polymer materials, especially a kind of soft-hard coextrusion sealing air duct protection plate and preparation method thereof.
Background technology
In household electrical appliances, the control overflow of refrigerator to temperature is of crucial importance, and heat insulation, heat radiation and the seal degree of whole casing all can have a strong impact on the ruuning situation of refrigerator.In recent years, along with Profile Extrusion technology development, Sealing Technology is constantly strengthened, and utilizes the material of some specific functions to strengthen its practicality simultaneously; Refrigeration system is the core component of refrigerator, and the operation of compressor can make whole system produce noise, also can produce certain heat, how to dispel the heat, heat insulation and reduce refrigerator to run the noise produced be the problem that industry personage pays close attention to always.In existing technology, generally can make with soft material the air-tightness that sealing strip ensures refrigerator body, hard material is used as the support part of casing, but the mechanical combination of numerous and diverse various materials, not only make to there is gap between soft material and hard material, sealing when impact is installed, turn increases production cost.
Summary of the invention
The object of the invention is: a kind of soft-hard coextrusion sealing air duct protection plate and preparation method thereof, it can realize the function heat insulation to refrigeration system bottom refrigerator, can ensure again the sealing that cold wind transmits, and noise when can reduce transmission, and low production cost, to overcome the deficiencies in the prior art.
The present invention is achieved in that soft-hard coextrusion sealing air duct protection plate, and it comprises hard structure part and soft functor, the hard PVC of the material of hard structure part to be shore hardness be 100-120 degree, and hard structure part is strip structure; The flexible PVC of the material of soft functor to be shore hardness be 70-80 degree, soft functor is globoidal structure; The side of hard structure part and the side of soft functor connect as one.
The overall width of hard structure part and soft functor is L, the width of hard structure part is L1, the width of soft functor is L2, the thickness of hard structure part is D1, the thickness of soft functor is D2, the angle of the link position of hard structure part and soft functor is k, and the surface area of hard structure part is S1, and the surface area of soft functor is S2; Wherein L=L1+L2, L:L:L1=1:0.21 ~ 0.22, L:D1=1:0.01 ~ 0.03, guarantees that air duct protection plate and refrigerator substrate connect reliability like this, simultaneously convenient for assembly again; L:D1=1:0.01 ~ 0.03, L1:D1=1:0.05, L2:D2=1:0.01, while ensure that the maximum effective area in air channel, the structure stress of air duct protection plate is improved, and so just can extend the service life of air duct protection plate; K is 90-100 °, k:D2=1:0.008, S1:S2 is 0.33-0.35:1, and the shear stress of ratio excessive soft or hard material joining place is excessive, and hard material and soft material can be caused to tear.
Shore hardness is the hard PVC of 100-120 degree and shore hardness by the preparation method of soft-hard coextrusion sealing air duct protection plate is the mode one-shot forming of flexible PVC with composite co-extruding of 70-80 degree, obtains the profile shapes of said structure.
Owing to have employed technique scheme, compared with prior art, hard PVC of the present invention provides reliable connecting forces and stable equipment size with hardware, and soft duct main is played to the effect supporting and draw; Duct main adopts flexible PVC, it is mainly the arc surface according to aerodynamic principle design, to strengthen heat insulation function when cold wind transmits in refrigeration system, the structure that simultaneously soft-hard coextrusion goes out ensure that between soft-member and hard part very close to each other, noise when not only can ensure the sealing of cold wind transmission but also can reduce transmission.Owing to adopting soft or hard shunting co-extrusion technology one-body molded when producing, soft or hard parts are combined, intensity is high, eliminate the mechanical combination of numerous and diverse various materials, during installation, its sealing obtains reinforcement, heat trnasfer is there is in such eliminating refrigeration system with extraneous, its effect of heat insulation and sealing effectiveness are improved greatly, so namely realizes the multifunction of material, improves the class of product, reduce again the cost of product; And the present invention is also optimized selection to the product size of producing, and significantly improves the mechanical property of product, close structure, succinctly attractive in appearance.Planform of the present invention is simple, and easily produce, with low cost, result of use is good.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present invention.
Detailed description of the invention
Embodiments of the invention: the production of soft-hard coextrusion sealing air duct protection plate, to be 75 degree and shore hardness by shore hardness be, and the hard PVC of 110 degree is extruded respectively by the coextrusion machine head of main extruder and diameter R2, and under the traction of co-extrusion die, traction rollers, extrusion neck ring mold is shaping; Final cooling and shaping, obtains profile shapes.As shown in Figure 1, comprise hard structure part 1 and soft functor 2, hard structure part 1 is strip structure to the structure of this profile shapes; Soft functor 2 is globoidal structure; The side of hard structure part 1 and the side of soft functor 2 are connected to one in coextrusion is processed; The overall width of hard structure part and soft functor is L, the width of hard structure part is L1, the width of soft functor is L2, the thickness of hard structure part is D1, the thickness of soft functor is D2, the angle of the link position of hard structure part and soft functor is k, and the surface area of hard structure part is S1, and the surface area of soft functor is S2; Wherein L=L1+L2, L:L:L1=1:0.21 ~ 0.22, L:D1=1:0.01 ~ 0.03, guarantees that air duct protection plate and refrigerator substrate connect reliability like this, simultaneously convenient for assembly again; L:D1=1:0.01 ~ 0.03, L1:D1=1:0.05, L2:D2=1:0.01, while ensure that the maximum effective area in air channel, the structure stress of air duct protection plate is improved, and so just can extend the service life of air duct protection plate; K is 90-100 °, k:D2=1:0.008, S1:S2 is 0.33-0.35:1, and the shear stress of ratio excessive soft or hard material joining place is excessive, and hard material and soft material can be caused to tear.
The product that embodiment prepares, its angle k is 95 ° (in the present invention, defining of angle k is, get the cross section of product, be straight line by the edge of the width of hard structure part 1 in cross section, be another straight line with soft functor 2 and the tangent line of the inner side of the link position of hard structure part 1, article two, the angle of straight line, being hard structure part 1 of the present invention is k) with the angle of the link position of soft functor 2, cross section similar " L " shape, in installation process, hard structure part 1 sets out the installing hole that diameter is 5mm, hard structure part 1 is connected on the air channel substrate edges of refrigerator by installing hole screw, formed one heat insulation, sealing, the wind model passage of noise reduction.
Claims (3)
1. a soft-hard coextrusion sealing air duct protection plate, it comprises hard structure part (1) and soft functor (2), it is characterized in that: the hard PVC of the material of hard structure part (1) to be shore hardness be 100-120 degree, and hard structure part (1) is strip structure; The flexible PVC of the material of soft functor (2) to be shore hardness be 70-80 degree, soft functor (2) is globoidal structure; The side of hard structure part (1) and the side of soft functor (2) connect as one.
2. soft-hard coextrusion sealing air duct protection plate according to claim 1, it is characterized in that: hard structure part (1) is L with the overall width of soft functor (2), the width of hard structure part (1) is L1, the width of soft functor (2) is L2, the thickness of hard structure part (1) is D1, the thickness of soft functor (2) is D2, hard structure part (1) is k with the angle of the link position of soft functor (2), k is 90-100 °, the surface area of hard structure part (1) is S1, and the surface area of soft functor (2) is S2; Wherein L=L1+L2, L:L1=1:0.21 ~ 0.22, L:D1=1:0.01 ~ 0.03, L1:D1=1:0.05, L2:D2=1:0.01, k:L2=1:0.86, k:D2=1:0.008, S1:S2 is 0.33-0.35:1, and wherein, the proportional units of k:L2 and k:D2 is °/mm.
3. the preparation method of a soft-hard coextrusion sealing air duct protection plate as claimed in claim 1, it is characterized in that: the mode one-shot forming of flexible PVC with composite co-extruding of to be the hard PVC of 100-120 degree and shore hardness by shore hardness be 70-80 degree, obtains the profile shapes of said structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410711203.1A CN104406348A (en) | 2014-12-01 | 2014-12-01 | Air duct protection plate for soft and hard co-extrusion sealing and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410711203.1A CN104406348A (en) | 2014-12-01 | 2014-12-01 | Air duct protection plate for soft and hard co-extrusion sealing and production method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104406348A true CN104406348A (en) | 2015-03-11 |
Family
ID=52643996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410711203.1A Pending CN104406348A (en) | 2014-12-01 | 2014-12-01 | Air duct protection plate for soft and hard co-extrusion sealing and production method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104406348A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01181075A (en) * | 1988-01-13 | 1989-07-19 | Sanyo Electric Co Ltd | Showcase |
| CN102478339A (en) * | 2010-11-26 | 2012-05-30 | 博西华家用电器有限公司 | Refrigeration equipment and air guide piece thereof |
| CN103411371A (en) * | 2013-08-16 | 2013-11-27 | 合肥美的电冰箱有限公司 | Soft-hard co-extrusion internal refrigerator door seal |
-
2014
- 2014-12-01 CN CN201410711203.1A patent/CN104406348A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01181075A (en) * | 1988-01-13 | 1989-07-19 | Sanyo Electric Co Ltd | Showcase |
| CN102478339A (en) * | 2010-11-26 | 2012-05-30 | 博西华家用电器有限公司 | Refrigeration equipment and air guide piece thereof |
| CN103411371A (en) * | 2013-08-16 | 2013-11-27 | 合肥美的电冰箱有限公司 | Soft-hard co-extrusion internal refrigerator door seal |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150311 |