Patent DE-102009049066-A1 (DE)
Title: Drying process for household appliance, or other drying system for drying of air, by utilizing energy of heat reception- and heat-releasing surface of a Peltier element, where containers are partially filled with phase change materials
Inventor: BIECHELE GUENTER
IPC: D06F25/00
Filed: 2009-10-12
Abstract: The drying process for a household appliance, or other drying system for drying of air, comprises utilizing energy of heat reception- and heat-releasing surface of a Peltier element (01), where containers (02) partially filled with phase change materials (02a) are adapted at the heat-transfer surface of the Peltier element in order to utilize the stored energy for a condensation drying of the gas. The storage and delivery of the energy are carried out in the latent heat storage and in interval independent to another process section. The drying process for a household appliance, or other drying system for drying of air, comprises utilizing energy of heat reception- and heat-releasing surface of a Peltier element (01), where containers (02) partially filled with phase change materials (02a) are adapted at the heat-transfer surface of the Peltier element in order to utilize the stored energy for a condensation drying of the gas. The storage and delivery of the energy are carried out in the latent heat storage and in interval independent to another process section. The energy stored in the phase change materials is used for a condensation drying by cooled condensation surface and heated process air. The condensation surface is a partial surface of the treatment area. The back side of the condensation process is flowed through water in meander-shaped manner. The phase change material is water, gas hydrate, paraffin in micro- or macro encapsulated form, high density polyethylene, salt and its eutectic mixture, salt hydrate and its mixture, salt water, water, sugar alcohol or composition of gases to be dried. The phase change material exists in a pumpable suspension, is integrated into heat conductive element (02b) for optimized heat transmission into the container and exists in the container in different aggregate condition so that the fluid and/or gaseous portion is circulated. The water, which is used as phase change material is process water in cold circuit, where the container is a system open towards outside with phase change material, and the heat energy is transferred as heat conductive element on the process medium. The heat exchanging is carried out in counter for or in direct current. Heat tubes are used as heat conductive element for improved heat transmission. The containers are thermally insulated towards outside for the reception of the phase change material. The heat energy of the environment and/or for the process from external in the latent heat storage is received to the energy of the Peltier element. Circulation devices for temperature homogenization in the container are integrated into the containers and/or circuits. The deformation of metal plates integrated into the corresponding containers is carried out for the activation of the crystallization during the use of salt or salt hydrate as phase change material. The circulation circuit is opened or closed to the containers by valves at inlet and outlet of the container.