CN201166013Y - multifunctional ventilation fan - Google Patents

Abstract

The utility model discloses a ventilating fan, which can ventilate houses, offices, meeting rooms and other places. The air sensor and filter are installed at the indoor end of the ventilation fan. When the indoor air quality exceeds the predetermined standard, the sensor sends a signal, and the ventilation motor is rotated and exhausted through the controller. The gas is discharged outside through the filter, and the motor can be reversed. , which can also exhaust or inhale. There is a dust cover and a rain cover at the outdoor end of the ventilation fan, which can effectively prevent impurities or rainwater from entering. A closed door is installed between the fan blades and the filter in the middle of the ventilation fan. When the fan motor rotates, the door is opened, and when the fan motor does not rotate, the closed door is closed, so that the indoor and outdoor air are not communicated. The casing of the ventilation fan is cylindrical, which overcomes the shortcomings of the square ventilation fan in the market, such as difficulty in installation, single function, and manual switch. It has the advantages of automatic switch control and high ventilation quality.

Description

multifunctional ventilation fan

Technical field:

The utility model relates to a ventilation fan, which is especially suitable for being installed in living rooms, offices, meeting rooms and other places for ventilation.

Background technique:

At present, the function of the ventilation fan used in the living room or office is relatively single, which is a kind of ventilation function. , because the switch is controlled by manpower, it often leads to insufficient ventilation or excessive ventilation, causing the indoor temperature to drop. Moreover, the shape of the ventilating fan housing is generally square, and the installation holes must also be made square during installation, which is quite inconvenient for installation.

Invention content:

In order to overcome the shortcomings of the ventilating fan currently used, the scheme adopted by the utility model is to make the shell of the ventilating fan into a cylindrical shape to facilitate installation, and at least four reeds are welded in equal parts on the circumference of the shell, and the reeds are gathered during installation. , when the ventilating fan is put into the installation hole, the reeds will open to fix the ventilating fan. An air sensor and a filter made of activated carbon material are installed near the indoor end of the ventilating fan, and a fan motor and blades are installed near the outdoor end of the ventilating fan. The vent is equipped with a dust cover and a rain cover, and a closed door is installed in the middle of the inner hole of the ventilation fan. When the fan blade rotates, the closed door is opened by wind force. When the fan motor blade does not rotate, the closed door is closed by its own weight. Draped to isolate the indoors from the outdoors.

The fan motor and blades used in the ventilation fan can rotate forward and reverse. When the indoor air quality is not good, the air sensor sends a signal to make the motor rotate, and the indoor air is discharged outside through the filter. If necessary, manual control can also be used to make the motor rotate in reverse, so that the outdoor fresh air can be sent into the room.

Compared with the existing exhaust fan, the utility model has the beneficial effects of: easy installation, the fan motor can rotate in both directions to realize exhaust or air supply, and the indoor air is discharged outside through the filter, reducing pollution. Automatic control can be realized.

Description of drawings:

Fig. 1 is a sectional view of the structure of the utility model

Detailed ways:

Below in conjunction with the accompanying drawings and specific embodiments, the utility model is further described in detail: As can be seen from accompanying drawing 1, the ventilating fan shell 3 is rolled by steel plate, and 4 springs are welded in equal parts in the circumferential direction of the ventilating fan shell. Sheets 5 and 13, when installing, the reeds are gathered earlier, and the ventilating fan can be packed into the wall hole drilled in advance, and the reeds 5 and 13 are automatically opened, and the ventilating fan and the wall are fixed by the tension of the reeds. Filter is housed in ventilating fan right end endoporus, and this filter is as shown in Figure 1, and the size of its shell 16 just matches with ventilating fan endoporus, can be put into ventilating fan hole, filter both sides all use stainless steel wire mesh 14 and 17, The filter material activated carbon 15 in the filter will not leak out, and at the same time it can be ventilated. In order to prevent the filter from moving in the ventilation fan, at least 2 fixed feet 4 are welded on the circumference of the proper position of the ventilation fan inner hole. The shell on the right side of the filter Face shield 2 is housed on 3, and face shield is made of stainless steel wire mesh, and air sensor 1 is installed in the middle of the face shield, and according to indoor air polluted situation, air sensor 1 sends signal, and fan motor 9 is started, carries out exhaust, and this motor can be forward and reverse. Rotate, also can suction, as shown in Figure 1, motor 9 is fixed on the motor base 8, and the outer circle diameter of motor base 8 just matches with the internal diameter of ventilating fan shell 3, and the left side of motor 9 is equipped with and does with stainless steel mesh. Dustproof cover 10 prevents light materials such as leaves, papers from inhaling, and rainproof cover 18 is equipped with to prevent rainwater from entering at the top of the exposed outdoor part of shell 3 left ends. In the inner hole of the casing 3, a closed door 11 is installed between the filter and the fan blade 7, the closed door 11 is at least divided into 2 pieces, and each piece is connected to the circular frame 12 separately with a pin 6, and the circular frame can be made of plastic or Made of steel, each closed door can rotate around the pin 6. When the motor 9 rotates, the closed door 11 rotates upwards around the pin 6 to open due to the wind force. When the motor does not rotate, the closed door 11 is closed by its own weight. Keep indoor and outdoor air from circulating.

Claims (7)

1. A ventilating fan, comprising fan blades and a fan blade driving motor, characterized in that: an air filter and a sensor are installed at the air inlet. 2. The ventilating fan according to claim 1, characterized in that: its shell is circular in shape, and its air outlet is equipped with a rainproof cover and a dustproof cover. 3. The ventilating fan according to claim 1, characterized in that the drive motor can rotate forward and reverse, that is, it can draw air or suck air. 4. The ventilation fan according to claim 1, characterized in that the filter material for the filter is activated carbon. 5. The ventilating fan according to claim 1, characterized in that: a closed door is installed in the middle of the inner hole of the ventilating fan shell, and when the fan blade motor rotates, the door is opened by wind force; when the fan blade motor does not rotate, the door is opened by its own weight. Close the air duct. 6. The ventilating fan according to claim 1, characterized in that: the driving of the fan blade driving motor is stopped and the air sensor sends out a control signal to control according to the indoor air quality. 7. The ventilating fan according to claim 2, characterized in that: at least 4 reeds are equally divided on the outer cylinder of the casing, and the ventilating fan is fixed to the installation hole by the tension of the reeds.