Refrigerator with means to mount an evaporator

Abstract: A refrigerator (12) shows a chamber (10) cooled by a vertical, substantially plane and rectangular evaporator (16) mounted in the chamber (10) by being snapped at two vertical edges (22) into vertical grooves in two opposite walls (26) of the chamber (10).

Description: The invention refers to a refrigerator having a chamber which is kept refrigerated by a vertical, substantially plane and rectangular evaporator arranged in the chamber. A refrigerator with such an evaporator is known through GB-A- 1 540 589. The known evaporator is kept in place by holders mounted on a rear wall of the chamber. The evaporator is provided with through holes by which it is snapped onto the holders, which protrude a bit through the respective hole and form an unevenness on the outside of the evaporator. The object of the invention is to bring about a refrigerator with an evaporator which is simple and cheap to mount and which shows an imperforate outside which is easy to keep clean. This object is obtained by the refrigerator according to the invention thereby that a vertical groove is formed in each of two opposite vertical side walls of the chamber, the evaporator being snapped at its two vertical edges into said grooves. It shall be noted that it is known through US-A- 2 620 254 to install a wire shelf in a refrigerator chamber by snapping protruding wire ends of the shelf into resilient plugs in circular apertures of the side walls of the chamber in order that the shelf inter alia shall be easy to remove for cleaning purposes. This known structure is not applicable to our evaporator, which must be cleaned in place and therefore must show smooth joints between the evaporator surface and the side walls of the chamber. Embodiments of a refrigerator according to the invention are described below in connection to the enclosed drawings on which Fig. 1 shows a chamber of a refrigerator, from which a door has been removed so that an evaporator has become visible, Fig. 2 shows a sectional view according to the marking II-II in Fig. 1, Fig. 3 shows a sectional view according to the marking III-III in Fig. 1, Fig. 4 shows in the same sectional view as Fig. 3 how the evaporator is mounted, Fig. 5 shows a further embodiment of the evaporator in the same sectional view as Fig. 3, and Fig. 6 shows a view according to the marking VI in Fig. 5. By 10 is designated a storing chamber in a refrigerator 12. The chamber 10 is available through an opening 14, which is closable by a door, not shown. The chamber 10 is kept refrigerated by an evaporator 16 which is arranged vertically close to a rear wall 15 in the chamber and is connected to a not shown refrigerating apparatus. The evaporator 16 consists of a rectangular plate of metal, in which plate ducts for a refrigerant are arranged. The visible front side 18 of the evaporator is quite plane while its hidden back 20 shows protuberances, under which said ducts are located. Such an evaporator is known per se through e.g. Figs. 8 and 10 of U.S. -A- 2 690 002. The vertical edges of the evaporator show a band-formed part 22 which forms a right angle with the front side 18. The evaporator rests with the parts 22 in vertical grooves 24 in the side walls 26 of the chamber. In one of the grooves 24 two resilient, tubular elements 28 are arranged at a distance from each other. The elements 28 press the evaporator against the other groove 24 via two silencing elastic intermediate elements 30 located in the other groove. The mounting of the evaporator is simple, see Fig. 4, which shows how one of the vertical edges 22 of the evaporator is brought against the element 28 in one of the grooves 24, after which the other vertical edge of the evaporator is brought against the other groove 24 till it snaps into the groove by the spring force from the element 28. Upper and lower edges, 32 and 34, respectively, of the grooves 24 fix the position of the evaporator vertically. A gap 36 is arranged between the wall 15 and the evaporator for circulation of air which is refrigerated by the back 20 of the evaporator. Two protrusions 38 of the wall 15 constitute supports for the evaporator in the gap 36. At the embodiment according to Figs. 5 and 6 vertical edges 23 of the evaporator 16 are surrounded by a strip 42 having a U-formed cross section. The strip 42, which is of relatively hard plastic, is clamped onto the evaporator 16. An elastic profile 46 having a Z-formed cross section is fastened to the strip 42 at 44. A first leg 48 of the profile 46 bears at its one end 50 on the groove 24, between its ends on the strip 42 at 52 and at its other end 54, where the leg 48 continues as a second leg 56, on the bottom of the groove 24. The second leg 56 continues at the fastening place 44 as a third leg 58, which at its free end 60 bears on the wall 26 and forms a smooth transition between the strip 42 and the wall 26. A temperature sensing means 62 for the operation of the refrigerator is held in heat conductive contact with the evaporator 16 by a holder 64 which is wedged between one leg 66 of the strip 42 and the evaporator 16 on the back of the evaporator. The strip 42 and the profile 46 extend both along the full height of the evaporator. At the embodiment according to Figs. 5 and 6 the evaporator is mounted in the grooves 24 with the strips 42 with the profiles 46 and the temperature sensing means 62 fastened to the evaporator 16.

Claims: Refrigerator having a chamber (10) which is kept refrigerated by a vertical, substantially plane and rectangular evaporator (16) arranged in the chamber, characterized in that a vertical groove (24) is formed in each of two opposite vertical side walls (26) of the chamber, the evaporator (16) being snapped at its two vertical edges (22; 23) into said grooves. Refrigerator according to claim 1, characterized in that resilient means (28, 30; 46) are arranged between at least the bottom of one of the grooves (24) and the corresponding edge (22; 23) of the evaporator, which resilient means (28, 30; 46) press the evaporator against the other groove. Refrigerator according to claim 2, characterized in that the evaporator (16) at each of its vertical edges shows a vertical band-formed part (22) which forms a right angle with the plane (18) of the evaporator (16), the band-formed parts (22) resting in the grooves(24). Refrigerator according to claim 3, characterized in that the resilient means consist of at least one elastic tubular element (28) which presses against the band-formed part (22). Refrigerator according to claim 2, characterized in that resilient means (28, 30; 46) are arranged between the bottom of the other groove (24) and the corresponding edge (22; 23) of the evaporator. Refrigerator according to claim 2, characterized in that the evaporator at each of its vertical edges (23) is surrounded by a strip (42) having a U-formed cross section to which the resilient means (46) are fastened. Refrigerator according to claim 6, a temperature sensing means (62) for the operation of the refrigerator being arranged in heat conductive contact with the evaporator (16), characterized in that the temperature sensing means (62) is arranged in a holder (64) which is wedged between one leg (66) of the strip (42) and the evaporator (16).

Inventors: GRANSTROEM LARS THORVALD, STRINDBERG LEIF JOHAN EINAR, GRANSTROEM, LARS THORVALD, STRINDBERG, LEIF JOHAN EINAR, Granström, Lars Thorvald
Applicants: ELECTROLUX AB, AKTIEBOLAGET ELECTROLUX
Application year: 1992
Main classification: F25D23
IPC codes: F25D23, F25D29, F25B39