Humidifier

Details Humidifier Humidifier

2000-10-30

2001-07-10

Paik, Sang (Department: 3742)

Electric resistance heating devices

Heating devices

Vaporizer

C200S013000

Reexamination Certificate

active

06259860

ABSTRACT:

BACKGROUND OF THE INVENTION
This invention relates to a humidifier, particularly to one having a body and a water storing tank and a float fitted around a water outlet of the water tank to move up and down together with the level of water in a water chamber of the body so as to drive a water level sensor to turning on and off the humidifier.
A known conventional humidifier shown in
FIGS. 1 and 2
includes a water level sensor S disposed in a water-storing tank A, and a float S
1
fixed at an outer circumference or one side of the water level sensor S. The float S
1
rises up and down together with the level of the water in the water storing tank A, and the water level sensor S is controlled by the float S
1
to turn on or off. So when the float S
1
falls down to the lowest water level, the water level sensor S may turn off the control electric circuit of the humidifier to prevent a heater or an ultrasonic oscillator from burning and also the humidifier from becoming out of order.
When the water level is normal or in the scope except the lowest level, the float can keep turning on the control electric circuit and subsequently turn on the switch of the humidifier. But provided the humidifier is placed to lie lateral or upside down, the float always stays at the highest water level or in the effective scope to always turn on the control electric circuit, even if there left no water in the water storing tank A or water flows into an upper cap. Then the float S
1
may permit the water level sensor S sense wrongly that the water in the water storing tank A has its level in the standard scope to let the switch of the humidifier always turning on. Then the heater of the humidifier may be heated up idle or the ultrasonic oscillator may be burned to cause disorder of the humidifier and danger to a user.
SUMMARY OF THE INVENTION
The objective of the invention is to offer a humidifier having a float formed as integral with a bottom base of a water tank, making the humidifier and a user safe.
The feature of the invention is a float combined with the bottom base of the water tank and near a water outlet of the water tank and separated together with a water level sensor when the water tank is removed from the humidifier. So malfunction of the water level sensor never happens, and in addition, the float is located near the water outlet, easily sensing the lowest water level in the water tank to let the sensor turn off the power of the humidifier to protect it.


REFERENCES:
patent: 4921639 (1990-05-01), Chiu
patent: 5037583 (1991-08-01), Hand
patent: 5156078 (1992-10-01), DeFigueiredo et al.
patent: 5483616 (1996-01-01), Chiu et al.
patent: 5609047 (1997-03-01), Hellman, Jr. et al.
patent: 5880423 (1999-03-01), Li

Affiliated with

Also associated with

Rating

Humidifier does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Humidifier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Humidifier will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2437685