BOILER FOR A MACHINE FOR MAKING HOT BEVERAGES

• US 20100199853A1
• Filed: 09/05/2008
• Published: 08/12/2010
• Est. Priority Date: 09/07/2007
• Status: Active Grant

• Current Assignee: Compagnie Mediterraneenne Des Cafes
• Original Assignee: Compagnie Mediterraneenne Des Cafes
• Inventors: Blanc, Jean-Pierre, Goering, Alain
• Granted Patent: US 8,607,694 B2
• Time in Patent Office: Days
• US Class Current: 99/323.3
• CPC Class Codes: A47J 31/10 Coffee-making apparatus, in which the brewing vessel , i.e. water heating container, is placed above or in the upper part of the beverage containers i.e. brewing vessel; Drip coffee-makers with the water heating container in a higher position than the brewing vessel A47J31/02 takes precedence
• CPC Class Codes: A47J 31/44 Parts or details or accessories of beverage-making apparatus filters or strainers A47J31/06
• CPC Class Codes: A47J 31/54 Water boiling vessels in beverage making machines
• CPC Class Codes: A47J 31/542 Continuous-flow heaters
• CPC Class Codes: F24H 1/102 with resistance
• CPC Class Codes: F24H 3/0405 using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between F24H3/06, F24H3/08, F24H3/10 take precedence
• CPC Class Codes: H05B 2203/021 Heaters specially adapted for heating liquids
• CPC Class Codes: H05B 3/50 heating conductor arranged in metal tubes, the radiating surface having heat-conducting fins

Abstract

The present device concerns a boiler for use in a machine for making hot beverages including a diffuser (32) with a first wall (33) destined to be placed in contact with the liquid to be heated and a second wall (34) opposite first wall (33), heating element (11) consisting of at least one thick film or photo-etching resistor (31) arranged on second wall (34) of diffuser (32), a body which, with first wall (33) of diffuser (32), defines a heating volume (11) inside which the liquid is to be heated, characterised in that it is arranged so that heating volume (11) is positioned on either side of heating element (30). Also described is the fabrication of machines for preparing hot beverages such as coffee.

Claims

1. Boiler for a machine for making hot beverages comprising:

A diffuser (32) comprising a first wall (33) destined to be placed in contact with a liquid to be heated and a second wall (34) opposite first wall (33),

heating means (11) consisting of at least one serigraphed or photo engraved resistance (31) arranged on second wall (34) of diffuser (32),

body which, with first wall (33) of diffuser (32), defines a heating volume (11) inside which the liquid is to be heated,

characterised in that it is arranged so that heating volume (11) is positioned on either side of heating means (30).

2. Boiler according to claim 1 in which the body consists of a material with a thermal conductivity that is less than 1 W/m/K.

3. Boiler according to claim 1 in which diffuser (32) has a thermal conductivity that is above or equal to 10 W/m/K.

4. Boiler according to claim 1 in which the body and diffuser (32) are arranged so that together they define at least one heating chamber.

5. Boiler according to claim 1 in which the body and diffuser (32) are arranged so that together they define a liquid circulating channel.

6. Boiler according to claim 1 in which heating volume (11) is positioned around serigraph resistance or photo-etching resistor (31).

7. Boiler according to claim 1 in which diffuser (32) is roughly cylindrical with circular or polygonal section, and in which the body acts like a sleeve that houses on diffuser (32).

8. Boiler according to claim 1 in which heating means (30) include at least two diffusers (32, 32), the two walls of which (34, 34) are turned so as to face one another.

9. Boiler according to claim 8 in which diffusers (32, 32) form roughly flat plates.

10. Boiler according to claim 8 comprising support (20) designed to receive diffusers (32, 32) and in which diffusers (32, 32) are situated on either side of support (20).

11. Boiler according to claim 10 in which support (20) is arranged so as to receive at least one diffuser (32), and receive a flask (10) forming at least one part of the body and so that flask (10) covers first wall (33) of diffuser (32) and, with diffuser (32), defines at least one part of heating volume (11).

12. Boiler according to claim 1 comprising at least one seal (70) positioned between first wall (33) of diffuser (32) and the body so as to ensure the seal of heating volume (11).

13. Boiler according to claim 12 comprising removable fixing means arranged so as to allow removable joining and removable separation of the body on support (20), the removable fixing means including means for clipping the body on support (20).

14. Coffee machine with a boiler according to claim 1.

15. Boiler according to claim 2 in which diffuser (32) has a thermal conductivity that is above or equal to 10 W/m/K.

16. Boiler according to claim 2 in which the body and diffuser (32) are arranged so that together they define at least one heating chamber.

17. Boiler according to claim 3 in which the body and diffuser (32) are arranged so that together they define at least one heating chamber.

18. Boiler according to claim 2 in which the body and diffuser (32) are arranged so that together they define a liquid circulating channel.

19. Boiler according to claim 3 in which the body and diffuser (32) are arranged so that together they define a liquid circulating channel.

20. Boiler according to claim 2 in which heating volume (11) is positioned around serigraph resistance or photo-etching resistor (31).