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Air duct protection plate for soft and hard co-extrusion sealing and production method thereof

A technology of soft and hard co-extrusion and air duct guards, which is applied to household refrigeration devices, applications, household appliances, etc., can solve the problems of affecting sealing performance and increasing costs, so as to prolong the service life, facilitate assembly, and improve structural stress Effect

Inactive Publication Date: 2015-03-11
贵州省工程复合材料中心 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the existing technology, soft materials are generally used to make sealing strips to ensure the airtightness of the refrigerator box, and hard materials are used as supporting parts of the box, but the complicated mechanical combination of various materials not only makes soft materials There is a gap between it and the hard material, which affects the sealing performance during installation and increases the production cost

Method used

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  • Air duct protection plate for soft and hard co-extrusion sealing and production method thereof

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Embodiment Construction

[0009] Embodiment of the present invention: the production of soft and hard co-extruded air duct guard plate for sealing, the hard PVC with Shore hardness of 75 degrees and Shore hardness of 110 degrees is passed through the main extruder and the co-extrusion of diameter R2 respectively Extruded from the head of the machine, the co-extrusion mold and traction rollers are pulled to form the extrusion die; finally cooled and shaped to obtain the profiled material. The structure of the profile is as figure 1 As shown, it includes a hard structural part 1 and a soft functional part 2, the hard structural part 1 is a strip structure; the soft functional part 2 is an arc surface structure; one side of the hard structural part 1 and the soft functional part 2 One side is connected as a whole in the co-extrusion process; the total width of the hard structural part and the soft functional part is L, the width of the hard structural part is L1, the width of the soft functional part is L...

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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 [0001] The invention relates to the technical field of medium and high polymer materials, in particular to a soft and hard co-extruded air duct guard plate for sealing and a preparation method thereof. Background technique [0002] Among household appliances, the temperature control requirements of refrigerators are extremely important. Heat insulation, heat dissipation, and the degree of sealing of the entire cabinet will seriously affect the operation of the refrigerator. In recent years, with the continuous development of profile extrusion technology, the sealing technology has been continuously strengthened, and some special functional materials have been used to enhance its practicability; the refrigeration system is the core component of the refrigerator, and the operation of the compressor will cause the entire system to produce Noise will also generate a certain amount of heat. How to dissipate heat, insulate heat, and reduce the noise generated by th...

Claims

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Application Information

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IPC IPC(8): F25D17/04B29C47/02
CPCF25D17/062B29C48/022F25D2317/067
Inventor 陈兴江杨青
Owner 贵州省工程复合材料中心
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