DE7823789U1 - Warming jugs, in particular coffee jugs for electric coffee machines - Google Patents

Description

BOSCH-SIEMENS HAUSGERÄTE GMBH 8000 Munich, July 17th, 1978 Stuttgart Hochstrasse 17

TZP 78/622 Vei / si

Warming jugs, in particular coffee jugs for electric coffee machines

The innovation concerns a warming jug with a liquid Drinking room, especially a coffee pot for an electric coffee maker. Most known electrical For coffee makers, the coffee pot is a simple thin-walled glass jug that sits on an electrically heated hotplate the coffee machine is at a standstill. However, after the coffee machines are often set up in the kitchen and prepared Coffee in the jug is brought to the breakfast table, thermos flasks with DEWAR vessels have become more popular Liquid holding space, enforced in coffee machines. However these pots have the disadvantage that they too have to be heated up by the first coffee that flows in and therefore When preparing smaller amounts of coffee, e.g. one or two cups, which also have the coffee filter when the coffee is flowing through of the water is only heated up, the coffee being prepared is not hot enough.

The innovation is therefore based on the task of a warming jug to create that keep large as well as small amounts of liquid sufficiently hot.

This object is achieved according to the invention in that the warming jug has a holding heater that heats the liquid receiving space. A warmth can be used as a holding heater

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Serve memory that keeps the liquid in the liquid receiving space hot for some time, even if the jug is used separately. In the case of a jug with a liquid receiving space formed in a ceramic jug, the wall thickness of the ceramic jug be excessively thickened at least in places to form a heat accumulator. This solution has the advantage of great design options for the shape of the jug.

The heat accumulator can also be a container with a temperature change be their physical state changing mass. As a change in the state of aggregation with a particularly high amount of heat is absorbed or released by the mass, melting and crystallization are possible. Such paraffin masses are known. The container for the heat storage mass and the liquid absorbing space are advantageously made of one Piece, e.g. made of glass or ceramic, made with the receiving space for the heat storage mass after it has been filled of manufacture is sealed.

In particular in the case of coffee pots of electric coffee machines, it is advantageous if the heat accumulator is made by conduction of heat can be heated outside and for this purpose preferably forms the standing surface, which in the case of the coffee machine is on an electric The hotplate is in place. In addition, to keep the temperature losses of the jug low, the liquid receiving space and the heat accumulator expediently at least in part by a common outer jacket made of heat-insulating material E.g. plastic enclosed and further measures for thermal insulation such as air spaces and mirroring can be applied will.

However, an electrical heating device that can be fed with electricity via an electrical plug connection can additionally or alone to serve. The electrical heating device can advantageously be arranged in the heat accumulator and this e.g. in the case of the

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heat up the electric coffee machine during brewing operation, this heating can serve as the sole source of energy for heating or the heat storage can also be used is heated by an electric hotplate. The heater can be attached to the wall of the liquid container be glued preferably by means of a ceramic paste and the jug can have a built-in electrical heating device have regulating temperature controller.

In the following the innovation is based on schematic drawings explained in more detail using exemplary embodiments. It shows

Fig. 1 is a vertical section through an innovation according to the invention Jug according to a first embodiment;

2 shows a vertical section through a jug according to a second embodiment;

Fig. 3 shows a vertical section through a jug according to a third embodiment;

FIG. K shows a vertical section through a jug according to a fourth embodiment, and FIG

Fig. 5 is a side view partially in section of a fifth embodiment.

The warming jug 1 of an electric coffee machine shown in Figure 1 has a plastic outer jacket 2, the one liquid receiving space 4 made of glass and a heat accumulator arranged underneath in the form of a firebrick laterally and has a pot handle 8. The liquid receiving space or liquid container 4 is supported via a sealing ring 10 against an upper inwardly directed flange 12 of the outer jacket 2 and engages

- 3 -

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with a lower tapered portion 14 in an upwardly projecting lug 16 of the firebrick to larger To form heat transfer surfaces. The Schmottstein is downwardly by a lower inwardly directed splash 18 of the outer jacket 2 and has a punching surface 20 projecting downward through the flange 18 for placement on the electrically heated hotplate of an electric coffee machine. In addition, the firebrick 6 has a electrical heater 22 inserted therein, which via a contact plug 24 arranged laterally on the outer jacket 2 with Power can be supplied when the warming jug 1 is on the surface of the electric coffee machine and engages with the contact plug 24 in contacts, not shown, of the electric coffee machine.

The warming jug 201 shown in FIG. 2 has a liquid receiving space or container 4 made of glass or thin-walled Ceramic with a handle 208 formed thereon and a double bottom 214, which is used as a container for a Heat storage mass is used. The heat storage mass must be heated up on a hotplate. However, a electrical heating can be installed as in the warming jug according to FIG.

The warming jug 301 shown in Figure 3 has an outer jacket 302 made of plastic, in which a to achieve a Heat storage effect of thick-walled liquid holding space or container 304 made of ceramic material is used. The outer jacket 302 is down by a screwed, the punched surface of the warming jug forming plastic base 305 is closed and a spring engaging this base 307 presses the ceramic container 304 against a seal 310 which rests on its upper edge and which is located on an inwardly directed seal Flange 302 is supported. Around the outer wall of the ceramic

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container 304 is wound a heating tape, which means to achieve a better heat transfer and a definition a ceramic paste can be glued to the outer wall and with a lateral electrical connector 324 in the Outer jacket 302 is in communication. The can 301 is in communication shown with a base housing of an electric coffee machine indicated by broken lines 325, which has a lateral plug connection for cooperation with the contact plug 324. Between the heating tape 322 and the connection contact 324 is electrically connected to the underside of the ceramic vessel 304 in a thermally conductive manner Temperature controller 323 switched.

The warming jug 401 shown in FIG. 4 is essentially Made in one piece from ceramic material and has a large wall thickness to achieve a heat capacity. Of the Bottom 414 is specially thickened in order to have a large heat storage capacity to have and additionally has an embedded electrical heater 422, which is connected to the side of the Jug attached electrical plug contact 424 in connection sbent.

Porcelain can also be used instead of ceramic material.

The coffee pot 501 shown in FIG. 5 has a conventional glass jug 504 with a handle 508 attached to it. The latter has an electrical plug contact 524, via the current one, part of the side wall of the glass jug 504 enclosing Heating jacket 522 is supplied from a surface heating element such as silicone rubber. An insulating sleeve from shrinkable plastic film material is covering and the Heating jacket 522 enclosing liquid-tight over the heating jacket shrunk to make the jug thus formed exchangeable for easy cleaning.

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TZP 78/622

Instead of the heating jacket 522 in the form of a surface heating element a winding of the heating conductor can also occur.

12 claims for protection
5 figures

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Claims (1)

• »ti Bosch-Siemens Hausgeräte GmbH 8000 Munich 80, 9/15/78 Stuttgart Hochstrasse 17 official file number TZP 78/622 Vei / ant New protection claims 1. Warming jug with a liquid receiving space, in particular Coffee pot for an electric coffee machine, characterized by one on the wall (14; 214) of the liquid receiving space (4; 204; 304; 404;) externally attached holding heater (6, 22; 2θ6; 304, 322; 414, 422). I 2 ,, warming jug according to claim 1, characterized in that ,! a heat accumulator (6; 2θ6; 304; 404, J 414) is used. I 3. warming jug according to claim 1 and / or 2, characterized I draws that it consists of a ceramic jug (304; 404), i *
¹ I whose wall thickness is at least in places to form a ί nes heat accumulator is excessively thickened. I 4. Warming jug according to one or more of claims 1 I to 3, characterized in that the heat accumulator is a f container (214) with a heat storage mass (206). ι
I.
] 5 · warming jug according to claim 4, characterized in that [the liquid receiving space (204) and the container (214) J for the heat storage mass (2θ6) from one piece z. B. off ; Glass or ceramic are formed. ? 823789 ~ 07.ίπ8 78/622 6. Warming jug according to one or more of claims 1 to 5, characterized in that the heat accumulator (6; 206, 214; 414) forms the standing surface (20; 214; 414). 7. warming jug according to one or more of claims 1 to 65, characterized in that the liquid receiving space (4; 304) and the heat accumulator (6; 304) at least partially by a common outer jacket (2; 302) made of heat-insulating material, e.g. B. plastic, is enclosed. 8. warming jug according to one or more of claims 1 to 7, characterized in that an electrical plug connection (24; 324; 424) on their outer jacket (18; 302; 404; 508) is formed or arranged. 9. warming jug according to claim 8, characterized in that an electrical heating device (22; 422) in the heat accumulator (6; 414) is arranged. 10. Warming jug according to claim 8 and / or 9, characterized in that that the heating device on the wall of the liquid receiving space (304), preferably glued by means of a ceramic paste. 11. Warming jug according to one or more of claims 8 to 9, characterized by a temperature controller (322) attached to the outside of the wall (304) of the liquid receiving space 12. Warming jug according to one or more of claims 1 to 11, characterized in that it is one of a shrunk Has insulating sleeve (502) liquid-tight covered heating sleeve (522). 7823789 ⁸ Q7.12.78