Class / Patent application number | Description | Number of patent applications / Date published |
034513000 | Heat conserving | 16 |
20080276486 | Domestic appliance with a cooling apparatus - The invention proposes a domestic appliance having a cooling unit which provides an extended range of ways of utilizing the heat provided for the cooling unit as process heat during working operation of the domestic appliance. According to the invention, this is achieved by using a liquid sorbent and/or a liquid sorbent/refrigerant mixture. | 11-13-2008 |
20090119943 | Vented dryer with heat recovery and condensate pan and method for operation thereof - The invention relates to a vented dryer having a drying chamber for items to be dried, a supply air duct for supply air, in which is situated a heater for heating the supply air and the heated supply air (process air) can be directed by means of a first fan over the items to be dried, an exhaust air duct, a motor for driving the drying chamber, a first heat exchanger in the exhaust air duct and a condensate pan arranged beneath the first heat exchanger, whereby the vented dryer has first means for the discharge of warm air from a housing interior surrounding the motor toward the condensate pan and away across the latter. The invention also relates to a method for the operation of this vented dryer. | 05-14-2009 |
20090205220 | Dryer and adapter having ducting system - An adapter to a dryer, or a new configuration to a dryer, allows articles, such as clothes, towels, sheets and the like to dry with reduced energy consumption. The adapted configuration draws air from outside the room or structure housing the dryer. The outside air is then used to dry the articles. The outside air can be heated within the dryer using the existing heater prior to entering the drum holding the articles. After the heated air removes moisture from the articles, the moist, hot air is expelled outside the room or structure through an outlet air duct. Thus, air within the room or structure is not used for the drying process and conditions such as temperature and pressure are not changed when the dryer is on. | 08-20-2009 |
20120233876 | Dryer Heat Recovery system - An improvement in a laundry dryer system using recovered waste heat from the hot air exhaust of the dryer to transfer that heat to the incoming ambient fresh air. A home laundry dryer in which both the fresh air entering a laundry drum and the air exhausted from the drum pass through thermal recovery ducting. The dryer heat recovery system has concentric ducting including a high temperature passage through which the exhaust air flows and a separate low temperature passage through which the entering air flows. Heat from the exhausted air is transferred from the high temperature passage to the entering air in the low temperature passage. This heat transfer lowers the energy required to raise the entering air to a desired drying temperature. The dryer ducting is designed to have an outer diameter equivalent to standard size ducting on home dryers. | 09-20-2012 |
20140165420 | VENTED LAUNDRY DRYING HAVING AN ADDITIONAL HEATER AND HEAT EXCHANGER UNIT - The invention relates to a vented laundry dryer, comprising an air inlet duct, an air outlet duct, a heat recovery system for transferring heat from the air outlet duct to the air inlet duct, and an additional heater, wherein the heat recovery system is a heat pump comprising an evaporator, a liquefier, a condenser, and a relaxation unit, wherein the liquefier is thermally coupled to the air inlet duct, and the evaporator is thermally coupled to the air outlet duct, and a relaxation property of the relaxation unit can be adjusted depending on at least one parameter that is connected to an activity of the additional heater. A method is used to operate a vented heat dryer comprising an additional heater and a heat pump having a relaxation unit, wherein the method comprises the following steps: (a) monitoring at least one parameter that is connected to an activity of the additional heater; and (b) changing a relaxation property of the relaxation unit depending on the at least one parameter. | 06-19-2014 |
034514000 | Exhaust gas or vapor from treatment zone heats treating gas or vapor | 11 |
20080209759 | Counter flow air cooling drier with fluid heating and integrated heat recovery - A drier apparatus for removing water from various materials includes a drying chamber, a regenerator system, a drying fluid system, and a heating fluid recirculation system and a method for use of the apparatus. The material to be dried flows concurrently through the drier with a heating fluid that is segregated from the material but in heat transfer relationship with the material. A drying fluid flows countercurrent through the chamber so as to become heated and at least partially saturated from moisture released by the material. The drying fluid is then used to preheat recycled heating fluid which is further heated by a makeup heater. In some embodiments, the drying fluid is also recycled to the chamber after passing through a chiller. | 09-04-2008 |
20080229610 | MOIST ORGANIC PRODUCT DRYING SYSTEM HAVING A ROTARY WASTE HEAT EVAPORATOR - A method and apparatus are provided for reducing the VOC and CO content of dryer offgas that is discharged into the atmosphere from a moist organic product drying process using thermal oxidizing apparatus that includes a furnace, mixing chamber, thermal oxidizer, tempering chamber, and an indirect gas-to-gas heat exchanger. The dryer offgas is separated into two portions, with a larger portion being preheated by indirect heat exchange with the hot gaseous output from the thermal oxidizer. The non-preheated portion is directed to a rotary waste heat evaporator in which moisture is removed therefrom. The preheated portion is recycled to the hot gas inlet of the dryer and serves the function of dryer heat transfer media. By removing moisture from the non-preheated portion of the offgas that is directed to the thermal oxidizing apparatus, simultaneous achievement of thermal oxidizer temperatures of 1600° F. or greater, and an adequate oxygen concentration of 5% by volume is achieved for optimized thermal oxidation of carbon monoxide and volatile organic compounds. | 09-25-2008 |
20090188128 | Utilization of waste heat in the dryer section of paper machines - A process and a device for utilization of waste heat from a high-temperature hood in the dryer section of a paper machine. The waste heat from the high-temperature hood is applied to the waste steam and the condensate, respectively, from a steam system by means of a heat exchanger, thus improving utilization of the energy contained in the exhaust air from a high temperature hood. | 07-30-2009 |
20090293303 | Biosolid Drying and Utilization in Cement Processes - The subject matter of this specification can be embodied in, among other things, a system for drying biosolids using waste heat from a cement-making process. The system includes an interface with a cement-making component, where the interface is configured to channel a waste heat gas generated during a manufacture of cement. The system includes a dryer that receives wet biosolids and uses heated dryer air in direct contact with the wet biosolids to produce a dried product. The dryer air has an oxygen content below a level allowing combustion to occur. The system includes a heat exchanger that receives the waste heat gas from the interface and uses the waste heat gas to heat the dryer air for the dryer, wherein the waste heat gas and the dryer air do not mix. | 12-03-2009 |
20120246967 | HEAT RECOVERY SYSTEM - The heat recovery system includes an oven having a treatment air with a treatment air temperature and a treatment air dew point temperature to treat a product or product in process. A zone outlet exhaust waste treatment air following the treatment of the product. A preheating zone includes a preheating inlet for the introduction of preheating air having a preheating air temperature and a preheating air dew point temperature to preheat the product. A transfer duct extends between the zone outlet of the oven and the preheating zone to transfer a portion of waste treatment air from the oven to the preheating zone to create the preheating air to preheat additional product. The preheating air preheats the product in the preheating zone to a product temperature that is at least equal to the treatment air dew point temperature to eliminate surface condensation on the product during treatment in the oven. | 10-04-2012 |
20120304488 | METHOD AND FACILITY FOR DRYING SLURRY-LIKE MATERIALS, IN PARTICULAR SLUDGE FROM WASTEWATER TREATMENT PLANTS - The invention relates to a method for drying slurry-like materials, in particular sludge from wastewater treatment plants, including two drying stages, namely: a first indirect drying stage ( | 12-06-2012 |
20130067763 | METHOD OF CONTROLLING THE FINISHING OF OPERATION OF A DRYING FURNACE ASSEMBLY IN A FOOD WASTE DISPOSER - A method of finishing the operation of a heating unit based either on a temperature difference between a drying furnace temperature and a recycling gas duct temperature or on a temperature difference between an exhaust gas duct temperature and a recycling gas duct temperature instead of finishing the operation of the heating unit based only on the drying furnace temperature. | 03-21-2013 |
20130239433 | METHOD FOR DRYING LAUNDRY AND DRYER - A method for providing fresh air fed through a fan to a burner of a dryer, thereby charging the burner, when the dryer is operated with recirculating air. In commercial dryers in which the drying air is heated by a burner, it is customary to reuse the moist air leaving a drum containing the laundry to be dried as recirculating air. The recirculating air component is increased with increasing drying of the laundry. At the end of the drying operation, when the moist air no longer contains as much moisture as at the start, the moist air is used as recirculating air. The burner then no longer gets enough combustion air, which leads to an incomplete combustion. The dryer can be operated with a higher recirculating air component, an optimal combustion being guaranteed through the charging of the burner with fresh air. The invention permits more economical drying. | 09-19-2013 |
20150020407 | Method and device for reprocessing wet waste materials containing organic components - In a method for reprocessing wet waste materials containing organic components, in particular sludges in a cement clinker production plant, in which raw meal is preheated in a preheater ( | 01-22-2015 |
034515000 | Heat pump or recompression increases heating effect | 2 |
20090300941 | HOUSEHOLD APPLIANCE AND METHOD FOR DRYING A DAMP ITEM - A household appliance and a method for drying a damp item via an air current are provided. An air current is conducted in a substantially enclosed dry air channel and is driven by a fan. The air current can flow through a treatment chamber with the item, a cooling arrangement for cooling the air current and removing moisture from the air current by condensation after it has flown through the treatment chamber, and a heating arrangement for heating the air current before it flows through the treatment chamber. The cooling arrangement has a first heat exchanger, via which heat from the air current is fed to a process gas that is conducted in a regenerative gas circulation process, and the heating arrangement has a second heat exchanger, via which heat from the process gas is fed to the air current. | 12-10-2009 |
20130232813 | CONTROLLING METHOD FOR A WASHING MACHINE - A control method for a drying machine according to one exemplary embodiment is applied to a drying machine which selects at least one of a heat pump system and a heater to use as a heat source for heating air to be supplied into the drum. The control method includes activating the heat pump system when both of the heat pump system and the heater are selected as the heat source, and determining whether or not a compressor included in the heat pump system normally operates. Whether or not to use the heater as the heat source is decided according to whether or not the compressor normally operates. | 09-12-2013 |