Refrigerator and magnetic door seal for freezer

Abstract

The invention relates to a refrigerator and a magnetic door seal for a freezer. The door seal is a TPE elastomer door sealing glue sheath; the section of the glue sheath is an annular air bag; a magnetic strip passes through the door seal; and the TPE elastomer door sealing glue sheath mainly comprises the following materials: SEBS, PP, PE, CaCO3, white oil, lubricating agent, antioxidant and proper amount of pigment. The invention has the following advantages: when cold gas is spilled out, the cold gas must perform heat exchange with outside air through the air bag outside, which protects the environment and is not easy to be influenced by the environment temperature, thereby greatly decreasing cold quantity loss. The invention greatly improves the sealing effect of door seal and refrigerator and decreases the coefficient of heat transfer, thereby saving energy and having the advantages of decreasing energy consumption, prolonging service life.

Description

technical field [0001] The invention relates to the technical field of magnetic door seals, in particular to a magnetic door seal for refrigerators and freezers. Background technique [0002] At present, most of the door seal materials for refrigerators and freezers on the market are made of soft PVC. Due to the characteristics of the material itself, there will be the following deficiencies in the process of use and installation: (1 ), poor low temperature resistance, PVC rubber sleeves will become brittle below -25°C, and are significantly affected by environmental temperature changes. If the temperature changes by ±4 to 5°C, its hardness will change by ±1 degree. Therefore, summer And the temperature in winter is easy to affect the sealing performance of its refrigerator door seal, resulting in an increase in energy consumption; (2), the anti-migration performance is poor, and the plasticizer in PVC is easy to migrate to the plastic parts of ABS and HIPS, or The sprayed ...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the door seal materials for refrigerators and freezers on the market are made of soft PVC. Due to the characteristics of the material itself, there will be the following deficiencies in the process of use and installation: (1 ), poor low temperature resistance, PVC rubber sleeves will become brittle below -25°C, and are significantly affected by environmental temperature changes. If the temperature changes by ±4 to 5°C, its hardness will change by ±1 degree. Therefore, summer And the temperature in winter is easy to affect the sealing performance of its refrigerator door seal, resulting in an increase in energy consumption; (2), the anti-migration performance is poor, and the plasticizer in PVC is easy to migrate to the plastic parts of ABS and HIPS, or The sprayed paint surface of the refrigerator will cause the rupture of the plastic parts, or cause corrosion marks with the sprayed surface, and seriously cause adhesion; (3) Poor anti-aging performance, because soft PVC is made of various plasticizers or Due to the extension of use time, its PVC door seal rubber sleeve will become hard, discolored and aged, which will affect the sealing and appearance and shorten its service life; (4), PVC is the abbreviation of polyvinyl chloride, which itself contains chlorine Vinyl monomer, which is a halogen-containing plastic material, is classified as non-environmentally friendly materials internationally; (5), due to the low mechanical strength of general soft PVC, the fracture length is below 200%, and the tensile strength is 8N / MM2. The switch test life of the refrigerator generally does not exceed 100,000 times, which affects its service life; (6), the soft PVC door seal has poor elasticity and is easily deformed by various reasons in the process of processing, packaging, storage, and transportation , resulting in poor sealing, running cold and other phenomena, seriously affecting the cooling effect of the refrigerator, resulting in increased energy consumption