Vacuum thermal insulating material and refrigerator using the same
A technology for vacuum insulation materials and refrigerators, applied in applications, home appliances, heat exchange equipment, etc., can solve the problems of reduced insulation performance, low productivity, and high prices, and achieve the effect of optimizing the earth's environment and improving thermal conductivity.
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no. 1 approach
[0056] Vacuum heat insulating material and refrigerator using the same according to the first embodiment of the present invention Figure 1 to Figure 5 Be explained.
[0057] First, refer to figure 1 The whole refrigerator of this embodiment is demonstrated. figure 1 It is a longitudinal sectional view showing the vacuum heat insulating material and the refrigerator using it according to the first embodiment of the present invention.
[0058] The structure of the refrigerator has a box-shaped refrigerator box 20 and a door 6 that opens and closes the front of the box 20 of the refrigerator. The box body 20 of the refrigerator is composed of an outer box 23 stamped and formed from an iron plate, an inner box 21 vacuum-formed by ABS resin, and a vacuum insulation material 30 to be described later that is installed in the heat insulating wall formed by the outer box 23 and the inner box 21 through flanges. , 80 and a foam insulation material 22 such as urethane having adhesive...
experiment example 1
[0097] In Experimental Example 1, as the core material of the vacuum heat insulating material 40, an aluminum film having a size of 200 mm×200 mm and a thickness of 30 μm was sandwiched between glass wool not containing a binder having an average fiber diameter of 3 μm to 5 μm, Furthermore, an aging treatment was performed at 180° C. for 1 hour. Thereafter, the getter (molecular sieve 13× / activated carbon) of the adsorbed gas is packed into the outer cladding 41 with gas barrier properties, exhausted by the rotary pump of the vacuum packaging machine for 10 minutes, and then exhausted by the diffusion pump for 10 minutes, After the internal pressure of the vacuum heat insulating material reaches 1.3 Pa, the end portion of the outer cover 41 is sealed by heat sealing. Note that Experimental Examples 1 to 3 are specific forms to which the first embodiment is applied.
[0098] The thermal conductivity of the thus-obtained vacuum insulation material 40 was measured at 10° C. usin...
experiment example 2
[0101] The vacuum heat insulating material 40 of Experimental Example 2 was produced in the same manner as in Experimental Example 1. The core material of the vacuum heat insulating material 40 as Experimental Example 2 was produced as follows. A polyethylene terephthalate film with a size of 200 mm x 200 mm and a thickness of 50 μm was sandwiched between an average fiber diameter of 3 μm to 5 μm that did not contain a binder. In the glass wool, and then at 180 ℃ for 1 hour of aging treatment. Thereafter, the getter (molecular sieve 13× / activated carbon) of the adsorbed gas is packed in the outer cladding 41 with gas barrier property, exhausted by the rotary pump of the vacuum packaging machine for 10 minutes, and then exhausted by the diffusion pump for 10 minutes, After the internal pressure of the vacuum heat insulating material reaches 1.3 Pa, the end portion of the outer cover 41 is sealed by heat sealing.
[0102] The vacuum heat insulating material 40 of Experimental E...
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