TWI610048B - dehumidifier - Google Patents

Abstract

A dehumidifier includes a housing unit defining an intake passage, a first filter detachably disposed in the housing unit and located in the intake passage, and a detecting whether the first filter is used a screen detecting unit disposed in the housing unit, and a control unit electrically connected to the screen detecting unit and the fan unit. When the control unit determines that the first filter is disposed in the housing unit according to the detection result of the filter detecting unit, the control unit controls the fan unit to rotate at a first rotation speed. When the control unit determines that the first filter is not disposed in the housing unit according to the detection result of the filter detecting unit, the control unit controls the fan unit to rotate at a second rotation speed lower than the first rotation speed.

Description

dehumidifier

The present invention relates to a dehumidifier, and more particularly to a dehumidifier having a screen.

The filter screens of general dehumidifiers are designed to be detachable for easy replacement or cleaning. However, when the dehumidifier is operated without the filter installed, the load of the dehumidifier is reduced due to the lack of the filter screen, and the noise of the dehumidifier is increased to cause the noise to follow, which affects the user's peace. Therefore, how to improve the shortcomings of the aforementioned prior art has become a subject to be further explored in this case.

Accordingly, it is an object of the present invention to provide a dehumidifier that improves the disadvantages of the prior art.

Therefore, the dehumidifier of the present invention comprises a housing unit, a first filter screen, a screen detecting unit, a fan unit, and a control unit.

The housing unit defines an intake passage. The first screen is detachably disposed in the housing unit and located in the intake passage. The filter detecting unit is configured to detect whether the first filter is disposed in the housing unit. The control unit is electrically connected to the filter detecting unit and the fan unit.

When the control unit determines that the first filter is disposed in the housing unit according to the detection result of the filter detecting unit, the control unit controls the fan unit to rotate at a first rotation speed.

When the control unit determines that the first filter is not disposed in the housing unit according to the detection result of the filter detecting unit, the control unit controls the fan unit to rotate at a second rotation speed lower than the first rotation speed.

In some embodiments, the housing unit has an inner surrounding surface defining the intake passage, and the screen detecting unit is disposed on the inner surrounding surface.

In some implementations, the screen detecting unit includes a push switch disposed on the inner surrounding surface.

In some implementations, when the first filter is not disposed in the housing unit, the push switch generates a first signal, and when the first filter is disposed on the housing unit, the first filter The peripheral portion is pressed against the push switch such that the push switch generates a second signal that is different from the first signal.

In some embodiments, the dehumidifier further includes a second filter screen detachably disposed in the housing unit and located in the intake passage, and disposed in parallel with the first filter screen .

In some embodiments, the first screen is a dust filter.

In some embodiments, the second screen is a deodorizing screen.

In some implementations, the housing unit defines an accommodating space that communicates with the air intake passage and is received by the fan unit, and the second filter screen is closer to the fan than the first filter screen. unit.

The effect of the present invention is that, by detecting the detection result of the filter detecting unit, the control unit can determine whether the first filter is disposed in the housing unit, and determine that the first filter is not disposed in the In the case of the housing unit, the fan unit is rotated at a second rotation speed lower than the first rotation speed, thereby reducing the noise emitted by the fan unit, and preventing the dehumidifier from affecting the user when the first filter screen is not installed. Peace.

Referring to FIG. 1 and FIG. 2, an embodiment of the dehumidifier of the present invention comprises a housing unit 1, a first filter screen 2, a second filter screen 3, a third filter screen 4, and a screen detecting unit 5. A fan unit 6, and a control unit 7.

The housing unit 1 defines an accommodating space 8 and an air inlet passage 9 communicating with the accommodating space 8. The accommodating space 8 is accommodated by the fan unit 6 and the control unit 7. The housing unit 1 has an inner circumferential surface 11 defining the inlet passage 9. The external air is drawn into the accommodating space 8 of the dehumidifier via the intake passage 9.

In this embodiment, the first filter screen 2, the second filter screen 3, and the third filter screen 4 are parallel to each other and are detachably disposed on the housing unit 1 and located in the intake passage 9, wherein the first filter screen The second filter screen 3 is adjacent to the inner side of the air inlet passage 9, the third filter screen 4 is adjacent to the outer side of the air inlet passage 9, and the first screen 2 is interposed between the second filter screen 3 and the third filter screen. Between 4, when the external airflow is drawn into the interior of the dehumidifier via the intake passage 9, it passes through the third sieve 4, passes through the first sieve 2, and finally passes through the second sieve 3. In addition, in the embodiment, the first filter 2 is, for example, a dust filter made of a non-woven material, and the second filter 3 is, for example, a deodorizing filter including an activated carbon material, and the third filter 4 is, for example, made of plastic, and has the function of partially covering the outer cover of the air inlet passage 9, but is not limited thereto.

The screen detecting unit 5 is disposed on the inner surrounding surface 11 and is configured to detect whether the first screen 2 is disposed on the housing unit 1 . More specifically, the screen detecting unit 5 includes a push switch 51 disposed on the inner surrounding surface 11. When the first filter 2 is not disposed on the housing unit 1, the push switch 51 generates a first signal. When the first filter 2 is disposed on the housing unit 1, the first filter 2 The peripheral portion is pressed against the push switch 51, and the push switch 51 generates a second signal different from the first signal by the weight of the first filter 2 itself.

The control unit 7 is electrically connected to the push switch 51 of the filter detecting unit 5 and the fan unit 6. When the control unit 7 receives the second signal generated by the push switch 51, and the control unit 7 determines that the first filter 2 is disposed in the housing unit 1, the control unit 7 controls the fan unit 6 to The first rotational speed is rotated. On the contrary, when the control unit 7 receives the first signal generated by the push switch 51, the control unit 7 determines that the first filter 2 is not disposed in the housing unit 1 and controls the fan unit 6 to be low. The second rotation speed of the first rotation speed is rotated to prevent the dehumidifier from becoming smaller due to the lack of the filter screen, and the air volume is increased to cause the noise to follow, thereby affecting the user's peace.

It is to be noted that when the control unit 7 determines that the first filter screen 2 is disposed on the housing unit 1, the control unit 7 can also control the fan unit 6 to be higher than the second rotation speed according to user input. And rotating at a third rotational speed different from the first rotational speed. More specifically, in the embodiment, in the case that the control unit 7 determines that the first screen 2 is disposed on the housing unit 1, the user can freely switch the control unit 7 to the first speed. Or the third rotational speed controls the fan unit 6 to rotate. However, if the control unit 7 determines that the first screen 2 is not disposed in the housing unit 1, the control unit 7 fixedly controls the rotation of the fan unit 6 at a second rotational speed without being input by a user. Impact. In addition, in other embodiments, when the control unit 7 determines that the first screen 2 is not disposed in the housing unit 1, the control unit 7 controls the current speed of the fan unit 6 to be set by the user ( The first rotational speed or the third rotational speed is reduced to a predetermined percentage of the current rotational speed (eg, 70% of the first rotational speed or 70% of the third rotational speed), and is not limited to the embodiment.

In summary, the dehumidifier of the present invention can detect whether the first filter 2 is disposed in the housing unit 1 by the detection result of the filter detecting unit 5, and determine the first When the filter screen 2 is not disposed on the housing unit 1, the fan unit 6 is controlled to rotate at a second rotation speed lower than the first rotation speed, thereby reducing noise and avoiding the dehumidifier in the first filter screen 2 The safety of the user is not affected when it is not installed, so the object of the present invention can be achieved.

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the equivalent equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still The scope of the invention is covered.

1‧‧‧Sheet unit
Around 11‧‧
2‧‧‧First screen
3‧‧‧Second filter
4‧‧‧ third filter
5‧‧‧Filter detection unit
51‧‧‧Push switch
6‧‧‧Fan unit
7‧‧‧Control unit
8‧‧‧ accommodating space
9‧‧‧Intake passage

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective exploded view of an embodiment of a dehumidifier of the present invention; and FIG. 2 is a schematic view of the embodiment of the present invention. System architecture block diagram.

1‧‧‧Sheet unit

Around 11‧‧

2‧‧‧First screen

3‧‧‧Second filter

4‧‧‧ third filter

5‧‧‧Filter detection unit

51‧‧‧Push switch

8‧‧‧ accommodating space

9‧‧‧Intake passage

Claims (8)

A dehumidifier comprising: a housing unit defining an intake passage; a first filter screen detachably disposed in the housing unit and located in the intake passage; and a screen detecting unit for Detecting whether the first filter is disposed in the housing unit; a fan unit; and a control unit electrically connecting the filter detecting unit and the fan unit; and when the control unit is configured according to the filter detecting unit The measurement result determines that the first filter is disposed in the housing unit, and the control unit controls the fan unit to rotate at a first rotation speed; when the control unit determines the first filter according to the detection result of the filter detection unit Not provided in the housing unit, the control unit controls the fan unit to rotate at a second rotational speed lower than the first rotational speed. The dehumidifier of claim 1, wherein the housing unit has an inner surrounding surface defining the intake passage, and the screen detecting unit is disposed on the inner surrounding surface. The dehumidifier of claim 2, wherein the screen detecting unit comprises a push switch disposed on the inner surrounding surface. The dehumidifier of claim 3, wherein when the first filter is not disposed in the housing unit, the push switch generates a first signal, and when the first filter is disposed in the housing unit, The peripheral portion of the first filter is pressed against the push switch such that the push switch generates a second signal that is different from the first signal. The dehumidifier of claim 1, further comprising a second filter screen detachably disposed in the housing unit and located in the intake passage, and disposed in parallel with the first filter screen . The dehumidifier of claim 1, wherein the first filter is a dust filter. The dehumidifier of claim 5, wherein the second filter is a deodorizing filter. The dehumidifier of claim 5, wherein the housing unit defines a receiving space that communicates with the air inlet passage and is accommodated by the fan unit, and the second filter screen is larger than the first filter. The net is closer to the fan unit.