摘要:
An acoustic air impingement drying system is provided for drying a material using a pneumatic transducer unit. An inlet chamber receives air from an airflow source at a supply flow rate. A plurality of acoustic resonant chambers are arranged in a drying zone, each having an inlet slot that receives air from the inlet chamber and an outlet slot that directs air onto the material, the outlet slots being oriented at an oblique angle relative to a width dimension of the pneumatic transducer unit. One or more peripheral exhaust air channels are arranged around the outer boundary of the drying zone for removing the air directed onto the material by the acoustic resonant chambers. A blower pulls air through the exhaust air channels at an exhaust flow rate.
摘要:
In a method for treating material that is disposed in an electrostatic field pattern to be acted upon by the electrostatic field pattern, the improvement of repetitively changing the electrostatic field pattern from a substantially uniform electrostatic field pattern to a substantially non-uniform electrostatic field pattern and then back to the substantially uniform electrostatic field pattern while the field pattern is acting on the material disposed therein, the material being a wet web-like fibrous material, a fluid, etc.
摘要:
Apparatus and method for removing moisture from moisture bearing material comprising engaging structure for engaging the material. A vibrator unit is provided for vibrating the engaging structure whereby the vibrating engaging structure vibrates the engaged material. Dielectric heating structure is provided for dielectrically heating the vibrating material to remove at least some of the moisture from the vibrating material.
摘要:
A process and an apparatus for removing water from a fibrous web are disclosed. The process comprises providing a fibrous web having a moisture content from about 1% to about 99%; providing an oscillatory flow-reversing impingement gas having a pre-determined frequency; providing a gas-distributing system comprising at least one discharge outlet designed to emit the oscillatory flow-reversing impingement gas onto the web; and impinging the oscillatory flow-reversing gas onto the web through the plurality of discharge outlets, thereby removing moisture from the web. The apparatus comprises a web support designed to receive a fibrous web thereon and to carry it in a machine direction; at least one rotary valve pulse generator designed to produce oscillatory flow-reversing air or gas; and at least one gas-distributing system in fluid communication with the pulse generator for delivering the oscillatory flow-reversing air or gas to the web. The gas-distributing system terminates with at least one discharge outlet juxtaposed with the web support such that the web support and the discharge outlets form an impingement distance therebetween.
摘要:
A method and/or apparatus for drying material is provided, the method comprising the steps of disposing the material in a heating unit to have the heating unit heat at least part of the liquid particles of the material, disposing a charged electrode unit so as to be adjacent one side of the material when the material is disposed in the heating unit and to define two adjacent electrostatic fields that are substantially constant and non-oscillating so that the fields at least partially extend through the material while the material is disposed in the heating unit, moving the material in one direction through the heating unit to cause at least a portion of the material to have the heated particles of liquid thereof serially move through the electrostatic fields whereby the electrostatic fields augment the drying effect of the heating unit on the material, disposing a nozzle between the adjacent electrostatic fields, directing a fluid flow through the nozzle so as to impinge against the material, and forming the heating unit to comprise an infrared heating unit.
摘要:
A method and/or apparatus for drying material is provided, the method comprising the steps of disposing the material in a heating unit to have the heating unit heat at least part of the liquid particles of the material, disposing a charged electrode unit so as to be adjacent one side of the material when the material is disposed in the heating unit and to define a plurality of alternately directed electrostatic fields that are serially arranged in a like repeating pattern and that are substantially constant and non-oscillating so that the fields at least partially extend through the material while the material is disposed in the heating unit, and moving the material in one direction through the heating unit to cause at least a portion of the material to have the particles of liquid thereof serially moved through a field that tends to move those particles in one direction relative to the material and then into the next field that tends to move those particles in substantially an opposite direction relative to the material in a repetitive manner whereby the particles of liquid of the portion of the material are subjected to an alternately directed pumping action by the serially arranged fields while the portion of the material is being heated by the heating unit and the material is being moved through the heating unit in the one direction.
摘要:
Method for moving moisture in moisture bearing material by disposing the material in an electrostatic field comprising a plurality of non-uniform electrostatic fields with each field having the higher intensity portion thereof substantially oppositely located relative to the higher intensity portion of an adjacent non-uniform field and at least partially extending across the material to act on at least part of the moisture thereof to move at least part of the moisture relative to the material.
摘要:
Method and apparatus for applying ultrasonic energy to a continuously moving web of paperboard at the same time it is being press-dried by being subjected to pressure and heat.
摘要:
Ultrasonic frequency sensor/radiators (hereinafter, radiators) are arranged in the vicinity of a material to be treated, on opposite sides of such material, opposite each other. In one embodiment, longitudinal acoustic vibrations are fed to the radiators at the same frequency and the phase difference of the vibrations fed to the different radiators is varied. In another embodiment, the vibrations are fed to the radiators at different frequencies f.sub.1 and f.sub.2 and the frequency difference .DELTA.f of the frequencies, where .DELTA.f=f.sub.1 -f.sub.2, is varied. In each embodiment the most intensive area of the field of vibration combinations in the material to be treated is focused by the radiators in a manner whereby it has an effect upon a desired area of the material.
摘要翻译:超声波频率传感器/散热器(以下称为散热器)布置在被处理材料附近,在这种材料的相对两侧相对。 在一个实施例中,纵向声振动以相同的频率馈送到散热器,并且馈送到不同散热器的振动的相位差是变化的。 在另一个实施例中,振动被馈送到不同频率f1和f2的辐射器,并且其中DELTA f = f1-f2的频率的频差DELTA f是变化的。 在每个实施例中,待处理材料中振动组合领域中最密集的区域被散热器聚焦,从而其对材料的期望区域具有影响。