Range hood capable of self-adaptively regulating rotating speed of fan
A technology of self-adaptive adjustment and fan speed, applied in the direction of oil fume removal, application, household heating, etc., can solve the problems of unable to reflect the oil fume pressure of public flue in time, unable to achieve smoke exhaust effect, oil fume pollution, etc., to improve exhaust Smoke effect, prevent flue blockage, low cost effect
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Embodiment 1
[0039] Embodiment one, see Figure 1 to Figure 9 :
[0040] This embodiment discloses a range hood whose fan speed can be adaptively adjusted. The range hood includes a range hood housing, a motor disposed in the range hood housing, and a speed regulation control circuit capable of controlling the motor speed, wherein the motor The air outlet is connected to the air outlet through the exhaust pipe, and the air outlet is connected to the public flue. The air outlet of the range hood is also provided with a sensor that can detect the pressure change of the public flue. Signal), the induction output end of the sensor is connected with the input end of the speed control circuit, and the output end of the speed control circuit is connected with the motor; the speed control circuit in the present embodiment is a prior art, can It is realized by using various existing circuit structures, and this embodiment does not go into details. In addition, the installation method of the range ...
Embodiment 2
[0058] Embodiment two, see Figure 10 , Figure 11 :
[0059] The structure of the range hood in the second embodiment is basically the same as that in the first embodiment, the difference between the two lies in the specific shape of the second chamber and the exhaust port in the sensor, and the communication mode between the second chamber and the exhaust port. To show the difference, the structures in the second embodiment that are different from the first embodiment are represented by numbers with a prime in the reference numerals, and the rest of the structures still retain the same symbols as those in the first embodiment.
[0060] The second chamber B' of the second embodiment is a vertically opened slender channel. The cavity in the shape of the slender channel not only saves the electrolyte, but also makes the detection of the sensor more sensitive. Once the external air pressure changes, the The liquid level in the second chamber B' can be significantly changed, wh...
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