Gas separation: apparatus – With sampling means
Reexamination Certificate
1999-08-24
2001-05-08
Smith, Duane (Department: 1724)
Gas separation: apparatus
With sampling means
C096S417000, C096S418000, C096S419000, C055SDIG003
Reexamination Certificate
active
06228155
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a automatic detection and warning device of the filtering net of an air conditioner, and especially to an automatic detection and warning device which can be appended to the wind channel of an air conditioner independently, or is incorporated to a filtering net of an air conditioner to be as one part of the filtering net.
BACKGROUND OF THE INVENTION
In the prior art, the filtering net primarily filters dusts, particles or hairs in the air as an air filtering device of an air conditioner. The filtering net is an important element. The current used filtering net can be classified as a high density filtering net and a lower density filtering net. These two filtering nets are reused through updating and cleaning. Namely, a timer is installed within the air conditioner. After a predetermined time (for example 500 hour or 1000 hours) has elapsed, the air conditioner is stopped or a warning lamp is bright up for informing the user to update or cleaning the filtering net.
However, The prior art filtering nets of air conditioners are very rough, it can not decide whether the amount of collecting dusts has over a threshold value. Therefore, often, in a dirty environment, the filtering net is too dirty but still in use so that the lifetime of the air conditioner is reduced greatly. Inversely, in a cleaning environment, it is often a clean filtering net is updated due to preset time having been elapsed. These not only trouble the user, but also the cost of updating filtering net is increased.
SUMMARY OF THE INVENTION
Accordingly, the primary object of the present invention is to provide an automatic detection and warning device of the filtering net of an air conditioner comprising a outer frame, a sampling filtering net, a detecting unit and a circuit unit. The present invention can be directly added to the filtering net of an air conditioner. In the present invention, by a design of the sampling filtering net, the amount of collecting dusts on the sampling filtering net is as an object of sensing. Thus, the amount of collecting dusts on the sampling filtering net can be detected so as to emit a warning to inform the user. Moreover, under the condition of unchanging the conventional filtering net of an air conditioner, the present invention can be added to an air conditioner. While the conventional way of accumulating the use time of the air conditioner is improved by the present invention.
Another object of the present invention is to provide an automatic detection and warning device of the filtering net of an air conditioner, wherein by adjusting an adjusting rod to various orientations, meanwhile, the incident angle of the transmitter of a detecting unit is also changed so as to set the amount of collecting dust.
The various objects and advantages of the present invention will be more readily understood from the following detailed description when read conjunction with the appended drawing.
REFERENCES:
patent: 2579477 (1951-12-01), Dauphinee
patent: 5917141 (1999-06-01), Naquin, Jr.
patent: 3-267108 (1991-11-01), None
patent: 4-163782 (1992-06-01), None
patent: 4-200707 (1992-07-01), None
patent: 5-31314 (1993-02-01), None
Hopkins Robert A.
Rosenberg , Klein & Lee
Smith Duane
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