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Refrigerating apparatus

a refrigerating apparatus and refrigerating technology, applied in the field of refrigerating apparatus, can solve the problems of increasing power consumption, enlargement of the apparatus, and steep rise of the cost, and achieve the effects of improving the performance of the refrigerating apparatus, enhancing and improving the efficiency of the heat exchang

Inactive Publication Date: 2011-06-02
PANASONIC HEALTHCARE HLDG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0004]However, to realize a desirable ultralow temperature, a compressor having a larger capability has to be selected. In such a case, a problem occurs to involve enlargement of an apparatus and steep rise of a cost. Moreover, with the increase of the capability of the used compressor, the increase of power consumption is incurred. Therefore, there has been desired the development of a refrigerating apparatus which can more efficiently cool the inside of a storage chamber to the ultralow temperature.
[0005]The present invention has been developed to solve a conventional technical problem, and an object thereof is to provide a refrigerating apparatus which can more efficiently cool the inside of a storage chamber to an ultralow temperature.

Problems solved by technology

In such a case, a problem occurs to involve enlargement of an apparatus and steep rise of a cost.
Moreover, with the increase of the capability of the used compressor, the increase of power consumption is incurred.

Method used

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Examples

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embodiment 1

[0033]FIG. 1 is a side view of an ultralow temperature refrigerator 1 to which a refrigerating apparatus of the present invention is applied. The ultralow temperature refrigerator 1 is used, for example, to store refrigerated food to be stored at a low temperature for a long period of time or to store an anatomy, a specimen or the like at an ultralow temperature. A main body of the refrigerator is constituted of an insulating box member 2 having an open upper surface, and a mechanical chamber (not shown) which is positioned in the lower part of the insulating box member 2 and in which a compressor 14 and the like are installed to constitute a refrigerant circuit of a refrigerating apparatus R1 of the present embodiment therein.

[0034]The insulating box member 2 is constituted of an outer box 3 and an inner box 4 both made of steel plates and having open upper surfaces; a breaker 5 made of a synthetic resin and connecting the upper ends of both the boxes 3 and 4 to each other; and a p...

embodiment 2

[0069]Next, a refrigerating apparatus of another embodiment of the present invention will be described with reference to FIG. 6. FIG. 6 is a refrigerant circuit diagram of the embodiment having a constitution of the refrigerating apparatus for the ultralow temperature refrigerator 1 of FIG. 1. In this case, compressors 54 and 84 and the like constituting the refrigerant circuit of a refrigerating apparatus R2 are installed in a mechanical chamber (not shown) positioned in the lower part of an insulating box member 2 of the ultralow temperature refrigerator 1, and an evaporator (a refrigerant piping line) 83 is attached to the peripheral surface of an inner box 4 on an insulating material 7 side in a heat exchange manner, similarly to the evaporator 13 of Embodiment 1 described above.

[0070]The refrigerant circuit of the refrigerating apparatus R2 of the present embodiment is a multiunit (two units) single stage refrigerant circuit constituted of a high temperature side refrigerant ci...

embodiment 3

[0107]Next, a refrigerating apparatus of a further embodiment of the present invention will be described with reference to FIG. 7. FIG. 7 is a refrigerant circuit diagram of the embodiment having a constitution of the refrigerating apparatus for the ultralow temperature refrigerator 1 of FIG. 1. In this case, a compressor 114 and the like constituting the refrigerant circuit of refrigerating apparatus R3 are installed in a mechanical chamber (not shown) positioned in the lower part of an insulating box member 2 of the ultralow temperature refrigerator 1, and an evaporator (a refrigerant piping line) 113 is attached to the peripheral surface of an inner box 4 on an insulating material 7 side in a heat exchange manner.

[0108]The refrigerant circuit of the refrigerating apparatus R3 of the present embodiment is constituted of a single unit multistage (two stages) refrigerant circuit 112 comprising the compressor 114, a condenser 115, an evaporator 113, a single intermediate heat exchang...

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PUM

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Abstract

There is disclosed a refrigerating apparatus which can more efficiently cool the inside of a chamber to an ultralow temperature. In a refrigerating apparatus R1 which condenses a refrigerant discharged from a compressor 14, reduces a pressure of the refrigerant by a capillary tube 18 and evaporates the refrigerant by an evaporator 13 to exert a cooling function, the capillary tube 18 is passed through a suction piping line 32 through which the refrigerant returning from the evaporator 13 to the compressor 14 flows, to constitute a double tube structure. Furthermore, the suction piping line 32 (a piping line 32A) formed in the double tube structure by passing the capillary tube 18 therethrough is surrounded with an insulating material 35.

Description

BACKGROUND OF THE INVENTION[0001]The present invention relates to a refrigerating apparatus which condenses a refrigerant discharged from a compressor and then evaporates the refrigerant by an evaporator to exert a cooling function.[0002]Heretofore, in a refrigerating apparatus for an ultralow temperature refrigerator used for storage of frozen food to be stored at a low temperature for a long period of time or storage of an anatomy, a specimen or the like at an ultralow temperature, a non-azeotropic mixed refrigerant including butane, ethylene and R14 (carbon tetrafluoride: CF4) or a non-azeotropic mixed refrigerant including butane, ethane and R14 is introduced in a refrigerant circuit, to secure handleability of the refrigerant in the refrigerating apparatus owing to operability of butane having a high boiling point in such non-azeotropic mixed refrigerant gases, at ordinary temperature. Moreover, ethane or ethylene having a remarkably low boiling point is evaporated by the evapo...

Claims

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Application Information

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IPC IPC(8): F25D17/00F28D15/04F25B1/00
CPCF25B7/00F25B9/006F25B2400/054F25B41/067F25B2400/052F25B40/00F25B41/37
Inventor KOBAYASHI, SUSUMUYOSHIDA, FUKUJIYUZAWA, JIROSATO, HIROYUKI
Owner PANASONIC HEALTHCARE HLDG CO LTD
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