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 co

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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PUM

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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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