Electric resistance heating devices – Heating devices – Vaporizer
Reexamination Certificate
2000-04-19
2001-09-04
Paik, Sang (Department: 3742)
Electric resistance heating devices
Heating devices
Vaporizer
C392S390000, C261SDIG006
Reexamination Certificate
active
06285830
ABSTRACT:
OBJECT OF THE INVENTION
The present invention relates to a device designed to evaporate volatile products for air fresheners, insecticides or similar substances, by heat provided by electrical resistors, in order to enhance the evaporation of the product which soaks a wick from the product container.
The invention centers on the means which the device incorporates in order to allow an adjustable intensity of evaporation.
BACKGROUND OF THE INVENTION
Volatile substance evaporators are widely known in the market, generally applied to insecticides or perfumes, and having a vessel containing the product to be evaporated, which rises by capillarity through a wick which leads the product near heating resistors which by their heat cause the evaporation.
In order to adapt use of these devices to different utilization conditions or consumer preferences, the rate of evaporation of the substances may be controlled, thus releasing a larger or smaller amount of evaporated product to the surroundings.
In this sense patent application No. 9,701,388 is known, in which one of these devices is disclosed where the rate of evaporation is controlled by changing the relative position of the wick and the heating element.
In this device, the electrical heating resistors are static, and it is the container and the wick which move axially by means of a threading in order to change the degree of exposure of the wick in the area of influence of the heating resistors.
These devices seek to combine simplicity and economy of production with efficiency and ease of use, as well as to make this use attractive to the consumer.
DESCRIPTION OF THE INVENTION
The invention here disclosed has been designed to provide an evaporator for volatile products with adjustable evaporation rate, in which the means which make the evaporation possible imply greater simplicity of construction and an easier and more pleasant operation of the device.
The adjustment of the rate of evaporation is achieved by a moving cap, which ill addition to providing the evaporator with the aforementioned characteristics, allows a more efficient regulation of the evaporation of the volatile product than in previously known systems.
In this way the volatile product evaporator is made from the basic structure for these devices, with a case or body which houses the heating resistors and extemalliy forming a plug for connection to the electrical mains, for power supply to the heating resistances. As a rule these resistors are of the PTC type.
The lower end of the case is provided with means of coupling the vessel containing the volatile product, either by screwing on or by any other conventional technique, so that it may be replaced by a new vessel when the content is exhausted.
Inside the vessel is a cylindrical wick which absorbs the liquid by porosity so that it rises up through it until it is near the heating resistors.
Based on this known arrangement of these devices, the invention is centered in that in order to determine the rate of evaporation, the evaporator is provided with a cap which can be manually axially moved, inside which is housed the wick soaked with the volatile product.
The function of the cap is to create a chimney effect which affects the rise of the vapor generated in the wick, so that this chimney effect increases the rising speed of this vapor, thereby increasing the rate of evaporation.
The axial displacement of this cap determines different heights for it, partially completing the path of the vapor to the outlet orifice. The longer this path the greater the chimney effect in the evaporation and vice versa, with a maximum and minimum position being defined by limiting the cap displacement with stops placed inside the case in a suitable manner.
The cap is connected to an arm which ends in a guide, meant to project out from the case through an inclined groove which defines the displacement of this guide. The user will operate this guide manually, which has a shape adapted to the inclined groove so that it may slide in it in either direction, upwards or downwards, thereby axially displacing the cap and adjusting the rate of evaporation.
REFERENCES:
patent: 1994932 (1935-03-01), Vidal
patent: 5038394 (1991-08-01), Hasegawa et al.
patent: 5095647 (1992-03-01), Zobele et al.
patent: 5222186 (1993-06-01), Schimanski et al.
patent: 5647053 (1997-07-01), Schroeder et al.
patent: 297 14 848 U1 (1997-12-01), None
patent: 1 015255 U (1990-09-01), None
patent: 9-308422 (1997-12-01), None
patent: WO 98/19526 (1998-05-01), None
patent: WO 00/10617 (2000-03-01), None
1995 IEEE International Solid-State Circuits Conference Digest of Technical Papers, pp. 226-227, “A 256 ×256 CMOS Active Pixel Image Sensor with motion Detection”, A. Dickinson et al.
1989 “Analog VISI and Neural Systems”, Addison Wesley and C. Mead.
DBK Espana S.A.
Helfgott & Karas, PC
Paik Sang
LandOfFree
Evaporated device for the evaporation of volatile products... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Evaporated device for the evaporation of volatile products..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evaporated device for the evaporation of volatile products... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2495682