Heat Accumulator Device And Cooking Appliance Comprising A Heat Accumulator Device Of This Type

Abstract

A heat accumulator device for a cooking appliance, comprising a housing, which can be sealed by a door and contains an interior section with a cooking chamber, at least one heating device for generating hot air and/or steam from a steam generator, and a fan device for circulating hot air and/or steam in the cooking chamber. The heat accumulator device comprises at least one accumulator container, which at least temporarily holds a medium that is at least partially fluid above a specific temperature and at least one heat exchanger, into which at least part of the medium can be pumped at least temporarily and which extends into the interior section and the steam generator. The heating device contains the heat exchanger. The invention also relates to a cooking appliance comprising at least one heat accumulator device of this type.

1 . Heat accumulator device for a cooking appliance with a housing that can be closed with a door which housing comprises an interior section with a cooking chamber, at least one heating device to produce at least one of hot air and/or or steam from a steam generator, and a ventilation device for circulating hot air and/or steam in the cooking chamber, wherein
 the heat accumulator device comprises at least one accumulator container for at least temporary uptake of a medium which is fluid at least above a certain temperature, and at least one heat exchanger device into which at least one part of the medium can be pumped at least temporarily and which extends into the interior section as well as into the steam generator, wherein the heating device comprises the heat exchanger device.   
   
   
       2 . Heat accumulator device according to  claim 1 , comprising at least one of a first insulation of the interior section and a second insulation of the accumulator container, whereby, wherein at least one of the first and second insulation comprises vacuum insulation. 
   
   
       3 . Heat accumulator device according to  claim 1 , wherein the heat exchanger device comprises at least three lines, wherein a first line extends from the accumulator container into the interior section and/or into the steam generator, a second line extends from the interior section into the accumulator container and a third line extends from the steam generator into the accumulator container. 
   
   
       4 . Heat accumulator device according to  claim 3 , comprising at least one first shutoff member in the first line, at least one second shutoff member in the second line and/or at least one third shutoff member in the third line, whereby at least the shutoff members are integrated into one unit and/or can be switched together. 
   
   
       5 . Heat accumulator device according to  claim 3 , wherein
 the heat exchanger device comprises two heat exchangers, one of which extends between the accumulator container and the interior section, and the other extends between the accumulator container and the steam generator.   
   
   
       6 . Heat accumulator device according to  claim 3 , wherein
 the heating device comprises a first heater in the interior section a second heater for the steam generator and/or a third heater for the accumulator container.   
   
   
       7 . Heat accumulator device according to  claim 3 , wherein
 the heat exchanger device runs between the first and second line concentrically to the fan wheel of the ventilation device.   
   
   
       8 . Heat accumulator device according to  claim 3 , wherein
 the heat exchanger device runs between the first and third line in the water of the steam generator.   
   
   
       9 . Heat accumulator device according to  claim 6 , wherein at least one of
 the first, second and third heater is in connection with at least a primary heater comprising at least one power source, at least one device for the combustion of auxiliary substances, and at least one external heat carrier.   
   
   
       10 . Heat accumulator device according to  claim 3 , wherein
 the accumulator container has at least two regions, whereby the regions can be connected to one another.   
   
   
       11 . Heat accumulator device according to  claim 10 , wherein the third heater and the first, second and third lines are in connection with a region of the accumulator container. 
   
   
       12 . Heat accumulator device according to  claim 4 , comprising
 a regulation and/or control device which is in working connection with the heating device, the ventilation device, the pump, the first shutoff member, the second shutoff member, the third shutoff member, at least one sensor unit, at least one input unit, at least one output unit, and a modem or the internet.   
   
   
       13 . Heat accumulator device according to  claim 1 , wherein
 the medium is suitable for heat accumulation and/or it utilizes or liberates latent heat during a phase transformation.   
   
   
       14 . Heat accumulator device according to  claim 1 , wherein
 the heating of the medium is loaded with energy in the cooking phases in which little or no energy is needed and/or during cooking pauses and/or through waste heat.   
   
   
       15 . Cooking appliance with at least one heat accumulator device according to  claim 1 . 
   
   
       16 . Heat accumulator device according to  claim 3 , wherein the first line extends through at least one pump into at least one of the interior section and/or the steam generator. 
   
   
       17 . Heat accumulator device according to  claim 4 , wherein the first and second shutoff members, or the first and third shutoff members, or the second and third shutoff members, or the first, second, and third shutoff members are integrated into one unit and/or can be switched together. 
   
   
       18 . Heat accumulator device according to  claim 6 , wherein the first heater is arranged concentrically around the fan wheel of the ventilation device. 
   
   
       19 . Heat accumulator device according to  claim 6 , comprising a second heater for the steam generator arranged in the region of the water in the steam generator. 
   
   
       20 . Heat accumulator device according to  claim 6 , comprising a third heater for the accumulator container arranged in the region of the accumulator medium. 
   
   
       21 . Heat accumulator device according to  claim 7 , wherein the heat exchanger device runs between the fan wheel and the first heater. 
   
   
       22 . Heat accumulator device according to  claim 9 , wherein the waste heat of at least one of the first, second, and third heaters is used at least partially by the primary heater. 
   
   
       23 . Heat accumulator device according to  claim 10 , wherein the regions of the accumulator container are connected to one another through a fourth shutoff member, at least temporarily, at least in some regions. 
   
   
       24 . Heat accumulator device according to  claim 12 , wherein the regulation and/or control device is in working connection with at least one of the first, second, and third heaters 
   
   
       25 . Heat accumulator device according to  claim 13 , wherein the medium comprises at least one of a metal, a salt, a polymer, water, steam, and superheated steam. 
   
   
       26 . Heat accumulator device according to  claim 14 , wherein the third heater is loaded with energy in the cooking phases in which little or no energy is needed and/or during cooking pauses and/or through waste heat. 
   
   
       27 . Heat accumulator device according to  claim 14 , wherein the waste heat comprises the heat of at least one of waste air, condensate, non-condensed parts of a cooking medium, water of the steam generator, steam of the steam generator, and superheated steam.