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Refrigerator and method of manufacturing the same

A technology for refrigerators and space parts, applied in the field of refrigerators and their manufacturing, can solve problems such as complex structures and manufacturing processes

Inactive Publication Date: 2014-12-03
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In addition, in order to keep the appearance of the vacuum space from external shocks, etc. under high vacuum conditions, the outer and inner shells of the refrigerator require very complicated structures and manufacturing processes

Method used

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  • Refrigerator and method of manufacturing the same
  • Refrigerator and method of manufacturing the same
  • Refrigerator and method of manufacturing the same

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0105] [Preparation Example 1] Preparation of reactive opening composition

[0106] In a 3L reaction vessel, add the formulation for preparing polyurethane foam, 700g of silicone oil used as a surfactant, and 277.9g of 12-hydroxystearic acid (12HSA), and heat the resulting solution to about 100°C while stirring at 1880rpm to 3600rpm . Subsequently, a solution of 22.1 g of lithium hydroxide (LiOH) dissolved in 100 ml of distilled water at 70° C. was slowly added over a period of 30 minutes to induce an acid-base neutralization reaction. After the reaction was completed, the temperature of the reaction vessel was gradually raised to 200° C., and the reaction product was stirred for 1 hour to completely remove moisture contained in the reaction product. Then, the reaction product was slowly cooled to about 60° C. and post-treated using a roller mill and a filter to prepare a combination having a solid content of 30% by weight and including a combination of a grease-type surfacta...

experiment example 1 and experiment example 2 and comparative example 1

[0109][Experimental Example 1 and Experimental Example 2 and Comparative Example 1] Preparation of Rigid Polyurethane Foam

[0110] According to the quantities quantified by the composition ratios shown in Table 2, the ingredients shown in Table 2 below were mixed at room temperature (25° C.) using a mechanical mixer at high speed for 4 to 5 seconds, and the resulting mixture was poured into An open mold with a size of 20 x 20 cm and a rectangular shape was used to induce foam formation. After the reaction was completed, the formed foam was aged for 24 hours and cut, and the cell size was measured with a scanning electron microscope (SEM), and is shown in Table 2.

[0111] In addition, Table 3 below shows measurement results of properties of polyurethane foams prepared according to Experimental Example 1 and Experimental Example 2 and Comparative Example 1.

[0112] [Table 2]

[0113]

[0114]

[0115] [table 3]

[0116]

[0117] As shown in Table 3, it could be co...

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Abstract

A refrigerator using a vacuum heat insulation material is disclosed. The refrigerator includes a door including a space part having a predetermined volume and a housing having a hole to allow communication between inner and outer sides of the space part, wherein the space part includes, as a core material, an open cell polyurethane foam formed by a foam material injected via the hole to fill the space part.

Description

technical field [0001] The present invention relates to a refrigerator with excellent heat insulation performance and a manufacturing method thereof, and more particularly to a refrigerator including a door with excellent heat insulation performance. Background technique [0002] Generally speaking, a refrigerator, as a device for storing food at low temperature, uses a freezing cycle to keep the temperature of the storage room at a refrigerating or freezing temperature, and is an electrical product capable of keeping the stored food cool or frozen. [0003] figure 1 is a diagram showing the structure of a conventional refrigerator 10 . refer to figure 1 , The refrigerator 10 includes: a main body 20 forming a storage space for storing food; a door 30 for opening or closing the refrigerating chamber 27 and the freezing chamber 28; and a mechanical chamber for performing a condensation cycle of refrigerant. [0004] Such as figure 2 As shown, the main body 20 includes: a...

Claims

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Application Information

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IPC IPC(8): F25D23/08B29C44/18
CPCF25D2201/14F25D23/064F25D23/067F25D23/08F25D23/00C08J9/0023C08J9/0052C08J2205/05C08J2375/04F25D23/02F25D2201/1262Y10T29/49993F16L59/06F25D23/06
Inventor 金昭润苏宰贤
Owner LG ELECTRONICS INC
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