DE2259377C3 - Warming cabinet - Google Patents

Description

The invention relates to a warming cabinet (incubator. Sterilizing cabinet. Drying cabinet or similar heating devices, as they are preferably used in laboratories can be used) with a usable space housing open on one side and lockable by a door, an outer housing accommodating the utility space housing and an electrical heating device in the room between usable space and outer housing.

Usually such heating cabinets consist of a utility space housing made of light metal or Stainless steel, which is arranged in an outer casing made of sheet steel with insulation in between. the Usable space can be locked with a door. Between the gap housing and the outer housing is an electrical one Heizvorrichiung arranged, whose I Reizleisiung is adjustable and is kept at the set value by means of control devices. These warming cabinets have proven themselves. Your manufacture is with one not inconsiderable amount of work involved.

Is known from the German utility model 7? L! 773 an electrically heated molding device that • There is a · - bowl with electric floor heating and a hood-shaped one. The shell is made of foamed plastic like polyurethanes. In this plastic rope body is! the electric heating device is foamed in. If the electric heating device is defective, so this frying device must be thrown away, vvvil repair of the fringed heating device not possible.

From DL-PS 63 191 a thermostat, in particular for components and / or assemblies of electrical communications engineering, is known in which a pot-shaped radiator with spiral grooves would take a heating coil with a thermal insulation material, namely Sch.nimpolv styrene, is provided. In the event of a defect in the heating coil, the same applies analogously to what was said about the aforementioned Ge braik's pattern. In addition, μ n ««. H a heat sheet is necessary to guarantee the heat benefit ¹ ··! ·). ^.

From US-PS 3,170CoO im ein Ofen fur lesi / ueikc known, in which an electrical heating conductor in Meander shape is inserted in grooves of a ceramic block. which in turn / wi-.ehen an inner wall .ms Aluminum sheet and a glass plate located \ .. in Outer housing, also made of sheet aluminum, jhge is covered. Ceramic heat conductor carrier in plate length and glass plates, apart from their weight, are not inexpensive.

From the DT-OS 1 fa54 9% is a crockery / um Keeping food warm is known when in the bottom or cover a heat-storing t -sen plate is let, which can be heated in a heating cabinet or by electrical eddy currents. The dishes can be made of various materials, including plastic. Direct heating is not intended.

The DL-PS 62 170 is a test chamber with a: t one from a heat-insulating Schuumkunststollisolation enclosed, prismatic, flameproof and dif Fusion-proof welded housing made of plastic with geiinger coefficient of thermal conductivity known, which stiffening medium / around wearing one protruding into the utility room having the heat exchanger.

An incubator in the form of a cook is also known pot. In a plastic pot. its opening with

_._ "... ..u _nn |, _m k, r.in por-Li-j jhuivlfrli! used in the IU in smaller plastic pot, which receives the tubes containing the nutrient medium and to be I ited. An electrical heating device is arranged between the outer pot and the inner pot.

The invention is based on the object that a The tried and tested construction of heat cabinets mentioned above to maintain, however, the number of its construction share to a minimum so that he is with can be assembled in a few operations and is uniform in the usable space of the heating cabinet Temperature distribution should be maintained.

This object is achieved according to the invention in a heating cabinet of the type described above by combining the following features:

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Bcs'"r.ders has preserved s ^ ¹ " be Jct ".r'.vd ^ nsssiemaben Xsjrrneschrank in weherer A-.a ^ cs",., · ^ J ^ j 'the Hci / V'> rr in the form of a heating element that is glued to the outer wall of the su ' desired W.irmeveneiur.g

Has been preserved in the war of invention I also made such a further education. at the one on d. ' Outer wall of the Nutzraunigehanses aul The heating device installed in a reflector is partially firmly connected by this arrangement heat losses are avoided

Such a further development of the invention, in which the usable space gch.Tise. which forms one piece with the molded front panel. is plugged into the outer housing. wherein the \ romplatte rests against the edge of the outer housing delimiting the opening and overlaps the edge of the outer housing delimiting the opening

lerner has it in a further development: bewahii. dall beirr. -rfin'J '^ i'siJi-m.ißen Warmeschrank the opening in the front panel of a ζ Β gold-plated. in iicii groove / space heat-reflecting. at least partially transparent for complete. This will on the one hand an observation of the incipient in the heat cupboard precedent easier and also its use at higher temperatures <* ο reindeer. Al · \ <· hranken at llnitsi are common, enabling

leuici hat is, iih newahrt. that the outer housing consists of elm in artificial nile, the wat mcisol.ition of which is better than ¹ st as dic-, eni «! i. newir ' ¹ ^ kungs>' · nt ck ι if according to Warmeschianks er reich 1

I etiu-i hai it is in white form he a "^ K."->.> ^{! L} '* i'i \ ^ a ΛΓ -'..; Γι _ν ^- . .'-. Gi'f . · ..>. ■ i.! ^ ¹ WCiN '. Du- \' .: acpg ^ '".r.;> E bc-tc"'. Cv i'j;'^ j ..- kj ^ st-to't uta becomes : m>, ρΐ \\ / £ .Λΐ \ c; i .-. "stc: · w .c Jj- Süi / rauitiS''hi ^ c herge-ieiü Bcvor.-iis' . bc she "'.' ..: - -X-iL ^ eniehju-e au * - e.nc" ku "s; - o! 'lU'v ^ e "\\ j · re-o..iüiT. t> csse ^r is ai- 0: c .r.'ge des K.itis> · ..! ' ics jes Vui / rjuüiiehji.ses 5 Be · g ^r i "3e ^r . s'c '"ji> e.sr * rr-essjr ^ en har-en -'ch r> esonc ^; He> kir sts'.o '' Ha ^- 'look ^ i (ichause bewahr l ") as \ ui / r.iii: vLvna; isi * has jnsrc'.irn / .c spacers b au Bern I:! “Et / en vies Nut / 'jjmiehauses π Jas AuLiengeh.''. Isc eiiolgt dt ·' spacer bracket thus automatically The 1 rop.tpl.utc 2 .st is more advantageously designed in one piece with the Nvit / Raum S and has openings for shadows :...!... ainpen bowlers control I Anzeigeinsmimenie and the like aui on the Ir.nenseüe the groove / raumgehauses 5 suid Eisten 7> od orden like, arranged the / ur support he ν schiedenster (iuttrager as Ho ^r the fur Samples in tubes or containers, ampoules, dishes, or the like, are used

On the outside of the groove / raumgeh.iusc \ 5 is a Heat conductor applied, the ais electric radiator 8 is designed in the form of isolated healers and is glued on These insulating heating conductors are in form of a circumferential winding or in some other way so applied that a desired Wv.rmevertei results in the treatment room.

Dice isolated Hei / Ieiterdrahte can at locally desired WarmcKonzentration in meander out form or otherwise bending or winding are i'jhrt Ap Sküc ii-sh'.iör """^'1*" heating element can also be a fü'chenhaftes, /. B. Textile Hc.zleilergev.ebe or a foil or a heating conductor sewn or woven into a fabric can be used. In both cases, the application of the heating to the outside of the groove / room housing 5 by Auik.c hen has proven particularly successful. To the heater 8 is en.c reflector surface. such as B. one from Ahm inium heMcu-ηΛ- or on the inside with a reflective ·! '', was made of aluminum-coated foil 9. .ιιιι, ίίίιΊήι The heating conductor 8 and the reflector 1 can / ι. , n » \ Hinheit be summed up.

The usable space housing of the heating cabinet k.m mn Implementation measures must be provided. /. B. for elekiris; ή ι.

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lines or pipelines, the latter being the loading and Degassing, a connection to a vacuum pump, humidification and dehumidification. Steam or other treatment in a controllable atmosphere or the supply and discharge of a chemically active or inert, gaseous or serve as a liquid medium.

The outer housing of the heating cabinet is also made of plastic and is preferably in Injection molding or made from rigid foam.

In addition to heating, cooling, e.g. B. ir, shape of a cooling snake, reminiscent of a usual cold zeugungssysiem (refrigerant circuit) is connected. or the cold spots of Peltier-Llemen th be arranged on the outside of the usable space housing so that no mutual interference occurs Heating and cooling are not switched on at the same time.

The warming cabinet designed according to the invention is both in the cabinet shape shown and as Chest usable.

The per se known application of plastic housings have the advantage that corrosive or other chemically aggressive samples or the like also enter the usable space can be introduced without incurring a Becintrach tigiing the I. life of such (»crates takes place.

The new heating cabinet has a wide range of uses preferably in the laboratories know more harmful institutes of chemistry. Phvsik. Me medicine and biology. From the multitude of possible applications fertilizers are only mentioned here as an example:

Temperature control of samples, incubation of cell cultures. Air conditioning, drying of objects that are in the usable space are introduced, z. B. Implementation physical and chemical tests and material investigations, including measurements in gas and liquids. Of course, small ones can also Test molding arrangements are introduced into the usable space

ίο be and observe instruments before going through for or flap of the device ·· be arranged. Djs Nutzraumgel.atisc alone or the warm schra.ik as a whole can be in a refrigerator or introduced a deep-freeze room v. earth-n. if there-

is I intcrsiichiing this requires when in the heating cabinet itself does not have any additional coolers was ordered

The new heating cabinet is advantageously used as a hanging cupboard for hanging, ζ B in laboratories, aiisgi ·

ic leads. This can so happen that the Außengeiiause on the side remote from the door ropes recesses for receiving \ <"n Aufhangcmitteln or to the Aulicngehausc on the side remote from the door side \ u \ - hangemittel. like tabs. Hook or Butu'l. angc-

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ί U r the real I) π t e r a π s ρ r u t h e 2 to K will only be used in conjunction with patent protection with claim i b e "e h r t

1 sheet of drawings

Claims (8)

Patent claims: 1. Heating cabinet with a usable space housing open on one side and lockable by a door. an outer housing accommodating the utility space housing and an electrical heating device in the space between the usable space and the outer housing, characterized by the union following features: a) the usable space housing consists in a manner known per se of temperature-resistant, formi.aL-iiem Plastic: b) the usable space housing is designed in one piece with a front plate that accommodates the door: '5 c) a planar electrical heating device is directly on the outer wall of the Nuizraumgehäuses upset. 2. Heating cabinet according to claim i. characterized in that the heating device in the form of a heating film iij -r a heating tape is glued to the outer wall of the Niitzraumgehäuses. 3. Heating cabinet according to claim 1 or 2. characterized gi-k. .M / calibrates. that the on the outside wall Hczvorrichlung applied to the Nuizraumgehäuses with a reflector. /. B. an aluminum foil, is at least partially firmly connected. 4 tub cabinet according to one of claims 1 to 3, characterized in that the utility space housing. which groove of the front panel forms a piece. is plugged into the outside _fr ehuuse, with the front panel lying on the edge of the outside house delimiting the openings and overlapping the edge of the outside housing. 5. Warming cabinet according to one of claims 1 to 4, characterized in that the opening in the front plate of a z. B. gold-evaporated, in the usable space is closed off at least partially transparent door, which is heat-reflecting. 6. Warming cabinet according to one of claims 1 to 5. di. · Lurch characterized in that the Außengehausc consists of a plastic whose thermal insulation is better than that of the plastic of the utility housing. 7. Heating cabinet according to claim 1, characterized in that that the outer housing is made of rigid plastic foam. 8. Heating cabinet according to claim 1, characterized in that the useful space and outer housing Injection molded parts are.