Coanda fin ventilator

A ventilation fan and vane technology, which is applied in the field of ventilation fans, can solve the problems of turbulent airflow and loud noise, and achieve the effects of stable airflow, soft airflow and various forms

Inactive Publication Date: 2017-11-28
NANHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the problem of turbulence in the air intake of the existing ventilation fan and loud noise in the case of large air intake

Method used

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  • Coanda fin ventilator
  • Coanda fin ventilator
  • Coanda fin ventilator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1, Coanda vane ventilation fan, including a cabinet body 1, two Coanda vanes 2, two half-sided Coanda vanes 3, exhaust fan 4 and gauze 6.

[0030] The cabinet 1 includes a fan chamber 1-1, a pressure stabilizing chamber 1-2 and a frame 1-3 for installing the Coanda fin 2 and the half-sided Coanda fin 3, the front panel 1-5 of the cabinet and the rear of the cabinet The panel 1-7 is provided with an air inlet 1-8 connected to the fan cavity 1-1, and two parallel guide rails 1 are respectively provided on the inside end surfaces of the cabinet front panel 1-5 and the cabinet rear panel 1-7. -6, two movable baffles 5 are installed between the two guide rails 1-6, the movable baffles 5 can open or close the air intake holes 1-8, the gauze 6 is installed on the frame 1-3, and is located in Cohen Reach the back side of fin 2 bar-shaped air outlet 2-1.

[0031] The plenum chamber 1-2 is arranged at the upper end of the fan chamber 1-1 and communicates with the fan ...

Embodiment 2

[0036] Embodiment 2. Compared with Embodiment 1, the difference between this embodiment is only that: the pressure stabilizing chamber 1-2 is vertically arranged on the wall plate of the frame 1-3 above the fan chamber 1-1, and the Coanda wing 2 and half Shaped Coanda fins 3 are horizontally arranged in the frame 1-3.

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PUM

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Abstract

Coanda vane ventilation fan includes cabinet, Coanda vanes, two half-shaped Coanda vanes, exhaust fan and screen. The cabinet includes a fan cavity, a voltage stabilizing cavity and a frame for installing Coanda fins and half-sided Coanda fins. The front panel and rear panel of the cabinet are equipped with air inlets connected to the fan cavity. Two parallel guide rails are provided on the inner end surfaces of the front panel and the rear panel of the cabinet. Two movable baffles are installed between the two guide rails, and the gauze is installed on the frame. The pressure stabilizing cavity is located at the upper end of the fan cavity and communicates with the fan cavity through the vent, and the frame is located at the upper end of the pressure stabilizing cavity. The exhaust fan is installed at the upper end of the fan cavity, and the Coanda fin and the half-shaped Coanda fin are installed in the frame. One end of it is connected to the pressure stabilizing cavity, and the other end is connected to the frame wall plate and closed by the frame wall plate; two pieces The half-shaped Coanda fins are respectively connected with the wall panels of the frame to form the inner cavity of the tube, and the Coanda fins are arranged between two half-shaped Coanda fins.

Description

technical field [0001] The invention relates to a ventilation fan, in particular to a Coanda vane ventilation fan. Background technique [0002] Ventilation fans are widely used in industries, homes, and public places, mainly through the exchange of indoor and outdoor air to meet the requirements of different functional rooms for indoor temperature, humidity, and cleanliness. Existing ventilating fans mainly use fan blades to rotate to shear the airflow to generate a front-rear pressure difference to realize ventilation. Although there are many types of ventilation fans, they all have the disadvantages of loud noise, turbulent airflow, and difficulty in cleaning. In the case of using a ventilation fan to enter the room, the turbulence of the air intake of the traditional ventilation fan will greatly disturb the indoor air, which will easily cause the indoor personnel to feel the wind and affect the thermal comfort of people; The requirements are high, and at the same time,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D25/08F04D29/66F04D29/40F04D29/70
CPCF04D25/08F04D29/4226F04D29/444F04D29/663F04D29/703F05D2240/12F04F5/16F04F5/466F04F5/46
Inventor 彭小勇叶雅玲胡畏梁晶晶
Owner NANHUA UNIV
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