초록 ▼

The vacuum insulator in accordance with the present invention comprises glass white wool body which density is 0.1?0.5 g/cm3 in density and is below 0.0023 kcal/mh° C. in thermal conductivity, and a non permeable container surrounding the body in which the pressure is between 10?6 ?10?1 torr. The va

The vacuum insulator in accordance with the present invention comprises glass white wool body which density is 0.1?0.5 g/cm3 in density and is below 0.0023 kcal/mh° C. in thermal conductivity, and a non permeable container surrounding the body in which the pressure is between 10?6 ?10?1 torr. The vacuum insulator is fabricated by piling up glass white wool, thermal-pressutizing the piled glass white wool to form a body of 0.1?0.5 g/cm3 in density wherein the pressurizing is done at 0.007?1.5 kg/cm2 and under 20° C. for more than 10 minutes, putting the body in the non-permeable container, and producing a vacuum in the container.

대표청구항 ▼

1. A vacuum insulator using glass white wool comprising:a glass white wool molded body which is 0.1?0.5 g/cm3 in density, and is below 0.0023 kcal/mh° C. in thermal conductivity; and a non permeable container surrounding the molded body in which pressure is between 10?6?10 ?1 torr. 2. A fabrication

1. A vacuum insulator using glass white wool comprising:a glass white wool molded body which is 0.1?0.5 g/cm3 in density, and is below 0.0023 kcal/mh° C. in thermal conductivity; and a non permeable container surrounding the molded body in which pressure is between 10?6?10 ?1 torr. 2. A fabrication method of the vacuum insulator using glass white wool comprising the steps of:piling glass white wool including no organic or inorganic binder to be a certain shape; molding the piled glass white wool by heating and pressing it in a temperature under 20° C. above strain point of the glass white wool, under pressure between 0.007?1.5 kg/cm2, for more than 10 minutes; and decompressing the molded glass white wool by putting it into the non permeable container and evacuating. 3. The method of claim 2, wherein the lowest molding temperature is higher than a temperature which is 110° C. below the strain point of the glass white wool in the step of molding the glass white wool.4. The method of claim 2, wherein a density of the molded glass white wool is between 0.1?0.5 g/cm3.5. The method of claim 2 further comprising a step of fabricating edges of the glass white wool body before putting the body into the non permeable container.6. The method of claim 2, wherein the non permeable containers made using stainless steel thin plate having thickness less than 120 μm.7. The method of claim 2, wherein a pipe for evacuating is disposed on one side surface of the non permeable container.8. The method of claim 7 further comprising a step of sealing the pipe by pressing after the step of evacuating the glass white wool in the non permeable container.9. The method of claim 2, wherein the pressure is to be between 10?6?10?1 torr in the step of evacuating the glass white wool in the non permeable container.