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Guide direction variable draft fan and its application

A technology of induced draft fans and guides, which is applied in the field of variable-direction induced draft fans and applications, and can solve problems such as poor working conditions, complex structures, and high temperatures

Inactive Publication Date: 2006-04-26
杨维丰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In recent years, the exhaust technology has been greatly developed. For example, the CN1250861A patent document records that the smoke exhaust machine is arranged at a low position, the fan is installed in the casing, and the centrifugal fan is used to suck in indoor or outdoor air. It is exhausted through the fan blades to the flue to exhaust the smoke by absorbing the smoke entering the casing. This method has the disadvantages of single smoke exhaust performance, complex structure, high power, high power consumption, and incomplete exhaust gas.
Another example is described in the 96204586.1 patent specification, the hood is installed upside down on the top of the chimney, and the smoke exhaust method relies on the centrifugal fan to attract the smoke in the inner cavity of the chimney. Although this method can achieve the purpose of smoke exhaust, it is inconvenient to install and maintain, and the power supply is far away. The motor half blocks the chimney outlet, the temperature is high, the working conditions are poor, and the wind is blocked, which affects the natural ventilation and exhaust, consumes a lot of power, and the performance is single.

Method used

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  • Guide direction variable draft fan and its application
  • Guide direction variable draft fan and its application
  • Guide direction variable draft fan and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0022] figure 1 Shown, is the variable-direction induced draft fan of the present invention, is provided with the reversing valve (14) in the air cylinder (11) of this induced fan and coincides with the inner wall of the air cylinder and rotates, and the reversing valve ring is provided with air inlets (141) at intervals. ) and guide rod (142), the air inlet is connected horizontally with the guide port (111) of the air duct, and the air inlet can be arranged in a single row (such as figure 1 Shown), can also be set up double row (such as image 3 shown). Turning the diverter valve (14) can form one or a row of diversion ports to close, and another or another row of diversion ports enters an open state (as figure 2 Shown), guide rod (142) is positioned at the sliding fit in the guide groove (112) of air duct, and guide rod is connected with extension spring (15), and guide rod can be provided with backguy.

Embodiment approach 2

[0024] Figure 4 It shows that the interface (31) of the variable deflection induced draft fan and the pipe (2) is obliquely fixedly matched, the diversion port (111) of the air cylinder (11) is respectively located in the inner cavity and the outside of the pipe, and the oblique cone diffuser The outside of (13) is a natural ventilation area (33), and the directional control valve (14) is turned to close the outside diversion port (111) of the pipeline, and the air inlet (141) is horizontally communicated with the diversion port (111) of the pipeline lumen, Attract the air flow in the inner cavity to exhaust, close the diversion port in the inner cavity, open the outer diversion port, attract the external air to exhaust, if the diversion port in the inner cavity of the pipeline and the diversion port on the outer side are half-open, then a The state of two-way guide air induction and exhaust is realized.

Embodiment approach 3

[0026] Figure 5 It shows the manner in which the double-row diversion port variable diversion induced draft fan cooperates with the chimney to discharge air in a straight line. Such as Figure 5 As shown, the front row of diversion openings (111) and the curved diffuser (13) of the induced draft fan duct are positioned at the inner chamber of the chimney (1), and the rear row of diversion holes (111) are positioned at the outside of the chimney wall. The interface (31) is handed over and fixedly matched with the air duct (11), the outside of the front row of air diversion openings is the air diversion area (113), the outside of the diffuser (13) is the natural ventilation area (33), and the air flow port (131 ) is the power airflow zone (132), the exhaust flow is in line with Figure 4 The exhaust process is the same. The interface of chimney is a square iron plate (16), and interface (31) is positioned at the middle part of iron plate, and the periphery of iron plate (16)...

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Abstract

The invention discloses a makeshift diversion induced draught fan, which is characterized by the following: setting makeshift valve in the inner ventilation pipe of induced draught fan to mate the inner wall rotary, setting single-row or double-row ventilation pipe in connection with diversion opening traversely. The invention accomplishes the function of one-way or two-way sucking pipe inner cavity or outer flow axial adhesive drainage, which displays light bulk, little noise and energy-saving without influencing the natural ventilation.

Description

[0001] Field: [0002] The invention belongs to the technical field of exhaust, and in particular relates to a variable-direction induced draft fan and its application. Background technique: [0003] In recent years, the exhaust technology has been greatly developed. For example, the CN1250861A patent document records that the smoke exhaust machine is arranged at a low position, the fan is installed in the casing, and the centrifugal fan is used to suck in indoor or outdoor air. It is exhausted through the fan blades to the flue to exhaust the oil fume by absorbing the smoke entering the casing. This method has disadvantages such as single smoke exhaust performance, complex structure, high power, high power consumption, and incomplete exhaust gas. Another example is described in the 96204586.1 patent specification, the hood is installed upside down on the top of the chimney, and the smoke exhaust method relies on the centrifugal fan to attract the smoke in the inner cavity of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23L17/02F03C1/04F24C15/20F24F7/013
Inventor 杨维丰
Owner 杨维丰