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Refrigerating apparatus and storge device using the same

Inactive Publication Date: 2011-06-16
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0013]An object of the present invention is to provide an inexpensive refrigerating apparatus with high defrost efficiency even when a surface temperature of a defrosting device is low.
[0014]A refrigerating apparatus according to the present invention is provided with a cooling unit whose height is greater than width when installed; and a defrosting device for defrosting frost formed on the cooling unit by heat, the defrosting device being in a straight pipe form, wherein the defrosting device is provided in a vertical direction on a side of the cooling unit. By providing the defrosting device in a straight pipe form in the vertical direction on the side of the cooling unit that is long in a longitudinal direction, it is possible to increase the length of the defrosting device and to lower the surface temperature of the defrosting device. Further, as the defrosting device is long, an amount of heat generation is large and defrosting efficiency is high. Moreover, it is possible to manufacture the defrosting device at a low cost as the defrosting device is in a straight pipe form.

Problems solved by technology

Consequently, the time required for defrosting further increases.
However, the pipe heater is expensive, as it requires a higher material cost and a processing cost.

Method used

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  • Refrigerating apparatus and storge device using the same
  • Refrigerating apparatus and storge device using the same
  • Refrigerating apparatus and storge device using the same

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0024]FIG. 1 shows a front elevational view of a refrigerating apparatus according to a first embodiment of the present invention. FIG. 2 shows a cross-sectional view of a defrosting device of the refrigerating apparatus.

[0025]Referring to FIG. 1, refrigerating apparatus 1 is provided with cooling unit 2 and defrosting device 5 in a straight pipe form. Cooling unit 2 is provided with a plurality of cooling fins 3 and refrigerant pipe 4. Specifically, cooling unit 2 is configured such that metallic cooling pipe 4 that is bent in a meandering manner passes through holes (not shown) provided for each cooling fin 3.

[0026]Cooling unit 2 is in a rectangular shape whose height A is 340 mm and width B is 240 mm. In other words, cooling unit 2 is longitudinally elongated. As shown in FIG. 1, cooling unit 2 is provided in the longitudinal direction, and defrosting device 5 is provided in a vertical direction. Defrosting device 5 is fixed by member 2a at a predetermined interval from cooling u...

second embodiment

[0037]FIG. 4 shows a cross-sectional view of a defrosting device of a refrigerating apparatus according to a second embodiment of the present invention. Like components as described in the first embodiment are denoted and described by like reference numerals. A difference from the structure of defrosting device 5 shown in FIG. 2 is that wire heater 7a of defrosting device 51 has different spiral pitches P1 and P2 as shown in FIG. 4. Here, spiral pitch P1 is smaller than spiral pitch P2.

[0038]Defrosting device 51 is fixed to cooling unit 2 such that a side of spiral pitch P1 comes upside. Specifically, defrosting device 51 is provided such that a side on which a coiled portion of heat generating unit 8 of wire heater 7a is dense comes upside. When defrosting device 51 is fixed to cooling unit 2, the coiled form of heat generating unit 8 becomes wider toward downside due to its own weight. According to the first embodiment, by the coiled form of heat generating unit 8 being wider towa...

third embodiment

[0040]FIG. 5 shows a cross-sectional view of a defrosting device of a refrigerating apparatus according to a third embodiment of the present invention. Like components as described in the first embodiment are denoted and described by like reference numerals. As shown in FIG. 5, defrosting device 52 is provided with glass tube 6, carbon heat generator 8a disposed within glass tube 6 and configured by a carbon fiber and whose both ends are respectively sealed and held by sealing bodies 8b, leads 10 connected to carbon heat generator 8a, cap 11 covering the upper opening of glass tube 6, and cap 12 covering the lower opening of glass tube 6.

[0041]Similarly to FIG. 1 and FIG. 3, defrosting device 52 is provided on the side of cooling unit 2 in the vertical direction. As defrosting device 52 according to the third embodiment uses carbon heat generator 8a, radiation efficiency of infrared light is high. Therefore, the time required for defrosting is short and the defrosting efficiency is ...

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Abstract

A refrigerating apparatus is provided with a cooling unit whose height is greater than width when installed; and a defrosting device for defrosting frost formed on the cooling unit by heat, the defrosting device being in a straight pipe form, wherein the defrosting device is provided in a vertical direction on a side of the cooling unit. By providing the defrosting device in a straight pipe form in the vertical direction on the side of the cooling unit that is long in a longitudinal direction, it is possible to increase the length of the defrosting device and to lower a surface temperature of the defrosting device. Further, as the defrosting device is long, an amount of heat generation is large and defrosting efficiency is high. Moreover, it is possible to manufacture the defrosting device at a low cost as the defrosting device is in a straight pipe form.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a refrigerating apparatus provided with a defrosting device, and a storage device utilizing the refrigerating apparatus.[0003]2. Description of the Related Art[0004]As an example of refrigerating apparatuses provided with a defrosting device, a refrigerating apparatus disclosed in Unexamined Japanese Patent Publication No. 2002-5553 is described. FIG. 9 shows a cross-sectional view of a main part of the refrigerator disclosed in Publication No. 2002-5553.[0005]Referring to FIG. 9, refrigerator 120 is provided with freezing chamber 121 at its lowermost part. Freezing chamber door 122 is provided on a front side of freezing chamber 121. Refrigerating chamber 123 is disposed above freezing chamber 121. Refrigerating chamber door 124 is provided on a front side of refrigerating chamber 123.[0006]Refrigerator 120 is provided with refrigerating apparatus 125 at its back side bottom (on a right...

Claims

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Application Information

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IPC IPC(8): F25D21/08F25D19/00
CPCF25D21/08
Inventor MAEDA, TOSHIKI
Owner PANASONIC CORP