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Publication numberUS2647376 A
Publication typeGrant
Publication dateAug 4, 1953
Filing dateFeb 11, 1952
Priority dateMar 2, 1951
Publication numberUS 2647376 A, US 2647376A, US-A-2647376, US2647376 A, US2647376A
InventorsReinhold Carlsson Filip
Original AssigneeReinhold Carlsson Filip
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Refrigerator with defrosting arrangement
US 2647376 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

Aug. 4, 1953 F. R. cARLssoN 2,647,376

REFRIGERATOR WITH DEFRosTING ARRANGmENT Filed Feb. 11, 1952 R n Summer l Patented Aug. 4, 1953 REFRIGERATOR WITH DEFROSTING ARRANGEMEN T Filip Reinhold Carlsson, Eskilstuna, Sweden Application February 11, 1952, Serial No. 271,053 In Sweden March 2, 1951 1 Claim. l

This invention relates to a device for eliminating the drawbacks in refrigerators, occurring on defrosting the cooling elements.

As is well known, a substantial drawback in refrigerators is caused by the cooling elements having often to be defrosted, that is the ice-layer formed on the cooling element, which deteriorates the cooling effect of the element has to be removed. If this does not occur sufficiently often the quality of the goods will be deteriorated that is ice crystals will be formed on it. Moreover the refrigerator will work uneconomically as by the increase of the ice layer the effect becomes lower. On removing the ice layer the temperature of the element is increased so as the ice melts and consequently the temperature in the refrigerating box increases. This involves a substantial loss in the cooling effect and besides that there is danger, that the goods placed in the refrigerating box will be damaged during the melting.

One object of the invention is to provide a method for eliminating the aforesaid drawbacks in a refrigerator consisting of a refrigerator box and a cooling element, by removing the cooling element from the refrigerator box without taking out the goods to be refrigerated closing the box in order to substantially maintain the temperature of the goods and inserting the defrosted cooling element in the refrigerator box.

Another object of the invention is to provide a device consisting of a refrigerator box and a cooling element which have a changeable position relatively to each other in order to remove the cooling element during operation, the box being provided with an opening for the cooling element, which opening when the element is inserted in the box is closed by a packing around the element while in defrosting position it is closed by a cover. Through such a device a refrigerated goods of excellent quality is obtained and the used effect will become low.

The invention is shown by way of illustration in the accompanying drawing according to which a refrigerator box I is provided with rollers or wheels 2 for facilitating the removal of same. The refrigerator box is provided with shelves la for the goods to be refrigerated and with an opening 3a for inserting and removing the goods and another opening 3 for the cooling element. A


cooling element 4 is mounted on a wall or stand 5 by means of a housing da which nts into the last-'mentioned opening 3 for closing the same and encloses a connection between the element 4 and a conduit 4b for the cooling fluid. The element 4 is adapted to extend within refrigerator box during operation. The opening 3a is provided with a cover 6a. The drawing shows the device in the position where the defrosting occurs, the opening 3 being covered by a heat isolating cover 6 which prevents the inner temperature of the refrigerator box to change substantially while the cooling element is outside of the refrigerator box. Defrosting of the cooling element occurs in ordinary manner, whereupon the cover E is removed and the refrigerator box is displaced in such manner that the cooling element is extending againin the freezing box and by a packing lia closes the opening 3. y

lt is evident that also the freezing box can'be stationary and the cooling element transportable if it is more suitable for the lconstruction but it is understood that various changes may beresorted to within the scope of the appended claim.

What I claim is:

The combination of a refrigerator box and a cooling element adapted to be removably positioned therein, said cooling element being xedly mounted on a wall or the like, roller means supporting the box to permit the displacement of the box from a cooling position, in which the cooling element is positioned within the box, to a defrosting position, in which the cooling element is positioned outside the box, said box having an opening for the lcooling element, and a lid for closing said openingv when the box is displaced away from the cooling element, said opening and said ycooling element having cooperating surfaces adapted to close said opening when the cooling element is positioned within said box.


References Cited in the le of this patent UNITED STATES PATENTS Number Name Date 1,949,663 Sellman Mar. 6, 1934 2,433,655 Di Zoppola Dec. 30, 1947

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1949663 *Nov 4, 1930Mar 6, 1934Electroiux Servel CorpRefrigerator construction
US2433655 *Jan 26, 1945Dec 30, 1947Reconstruction Finance CorpQuick-freeze unit
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2972238 *Jan 27, 1958Feb 21, 1961A I F E L Apparecchiature IndCombined refrigerating and defrosting system
US4738117 *Feb 6, 1987Apr 19, 1988Colpo Co., Ltd.Insulating apparatus
US6895764 *May 2, 2003May 24, 2005Thermo King CorporationEnvironmentally friendly method and apparatus for cooling a temperature controlled space
US20040216469 *May 2, 2003Nov 4, 2004Thermo King CorporationEnvironmentally friendly method and apparatus for cooling a temperature controlled space
U.S. Classification62/237, 62/282
International ClassificationF25D21/06
Cooperative ClassificationF25D21/06
European ClassificationF25D21/06