Induced draft fan conversion interface and induced draft fan

Abstract

The induced draft fan conversion interface comprises an inlet part connected with an air outlet of a volute, an outlet part connected with a load pipeline and a transition part connected with the inlet part and the outlet part, and the transition part inclines upwards to enable the outlet part and the inlet part to be staggered in the height direction. The volute is characterized in that the height H1 of an inner cavity of the inlet part is at least 3 mm higher than the height H2 of an air outlet of the volute, a movable adjusting block is installed in the top of the inlet part, and the movable adjusting block is used for blocking a gap between the top end of the air outlet of the volute and the inlet part in the height direction. The output air volume of the induced draft fan is increased by increasing the size of the conversion interface of the induced draft fan in the height direction and increasing the butt joint position area of the conversion interface. The movable adjusting block is used for blocking a gap between the top end of the air outlet of the volute and the inlet part in the height direction, air leakage is prevented, and the technical problem of size mismatching is effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of fan leading conversion interface and fan leading. BACKGROUND

[0002] At present, the air outlet of most fan leading is rectangular, if it is connected to the external pipeline of different shape interface (such as circular), it must be installed on the adapter (i.e. conversion interface), i.e. fan leading conversion interface is installed at the air outlet of volute, see the utility model patent with patent number CN201820912379 and patent name: a fan leading conversion interface and fan leading applied to it.

[0003] The area of the air outlet (most of which is rectangular in cross section) of general volute and the fan leading conversion interface is almost the same. Experimental research shows that the size of the conversion interface docking position area affects the output air volume of the fan, and in the case of not changing the motor performance, it is necessary to increase the conversion interface docking position area to increase the air volume of the fan. If the conversion interface docking position area is increased, the problem of mismatch between the conversion interface and the air outlet of the volute of the fan leading will occur, and the existing volute scheme cannot match the conversion interface with increased docking position area. SUMMARY

[0004] The utility model aims to provide a kind of fan leading conversion interface and fan leading, solve the technical problem that the conversion interface and the volute air outlet of fan leading mismatch will occur in the case of not changing the motor performance to increase the conversion interface docking position area to increase the output air volume of fan leading in background art.

[0005] The utility model aims to be realized by the following technical scheme.

[0006] A kind of fan leading conversion interface, including the inlet portion connected with the air outlet of volute, the outlet portion connected with load pipeline and the transition portion connecting the inlet portion and the outlet portion, the transition portion is inclined upward to make the position of outlet portion and inlet portion stagger in height direction, characterized by: the inner cavity height H1 of inlet portion is at least 3mm higher than the air outlet height H2 of volute, movable adjusting block is installed in the top of inlet portion, and movable adjusting block is used to plug the clearance in height direction between the top end of the air outlet of volute and inlet portion.

[0007] Preferably, movable adjusting block includes plug body and end protruding limit block, plug body is embedded into the clearance in height direction between the top end of the air outlet of volute and inlet portion, and limit block is located on the outside of inlet portion and is resisted by the end surface of inlet portion.

[0008] Preferably, the plug body is provided with a mounting hole, and a screw is passed through the outlet portion, the mounting hole of the plug body and the air outlet to connect the outlet portion, the movable adjusting block and the air outlet.

[0009] Preferably, the movable adjusting block is adjustable in size to expand the versatility of the conversion interface, i.e. the same size conversion interface is matched with the air outlet size of different volutes by adjusting the size of the movable adjusting block.

[0010] Preferably, the outlet portion, the inlet portion and the excess portion are integrally cast.

[0011] Preferably, the cross-sectional shape of the outlet portion is a hollow cylinder, and the cross-sectional shape of the inlet portion is a rectangle.

[0012] A booster fan comprising a volute and a booster fan conversion interface mounted at an air outlet of the volute, characterized in that the booster fan conversion interface is the booster fan conversion interface described above.

[0013] Compared with the prior art, the booster fan conversion interface has the following effects:

[0014] Effect 1: The inner cavity height H1 of the inlet portion is at least 3mm higher than the air outlet height H2 of the volute, and by increasing the size of the booster fan conversion interface in the height direction, the area of the conversion interface docking position is increased to increase the output air volume of the booster fan.

[0015] Effect 2: An active adjusting block is installed inside the top of the inlet portion of the booster fan conversion interface, and the active adjusting block is used to block the gap between the top end of the air outlet of the volute and the inlet portion in the height direction, preventing air leakage and effectively solving the technical problem of size mismatch between the conversion interface and the air outlet of the volute of the booster fan. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a perspective view of one angle of the booster fan conversion interface of the first embodiment of the utility model;

[0017] Figure 2 is a perspective view of another angle of the booster fan conversion interface of the first embodiment of the utility model;

[0018] Figure 3 is an exploded view of the booster fan conversion interface of the first embodiment of the utility model;

[0019] Figure 4 is a perspective view of the movable adjusting block of the booster fan conversion interface of the first embodiment of the utility model;

[0020] Figure 5 is an assembly perspective view of the booster fan conversion interface and the volute of the first embodiment of the utility model;

[0021] Figure 6 is the exploded view of the air guide fan conversion interface and volute of the first embodiment of the utility model;

[0022] Figure 7 is the top view of the air guide fan conversion interface and volute after assembly of the first embodiment of the utility model;

[0023] Figure 8 is Figure 7 A-A section view of the first embodiment of the utility model. DETAILED DESCRIPTION

[0024] The utility model will be described in further detail below through specific embodiments and in conjunction with the drawings.

[0025] Embodiment one:

[0026] As Figures 1 to 8 shown, the 1. a kind of air guide fan conversion interface provided in the embodiment includes the inlet portion 2 connected with the air outlet 101 of volute 100, the outlet portion 3 connected with load pipeline and the transition portion 4 connecting inlet portion 2 and outlet portion 3, and the transition portion 4 is inclined upward to make the position of outlet portion 2 and inlet portion 3 stagger in height direction, characterized by: the inner cavity height H1 of inlet portion 2 is at least 3mm higher than the air outlet height H2 of volute 100, and movable adjusting block 1 is installed in the top of inlet portion 2, and movable adjusting block 1 is used to block the clearance 5 in height direction between the top end of air outlet of volute 100 and inlet portion 2.

[0027] The inner cavity height H1 of the inlet portion of the utility model is at least 3mm higher than the air outlet height H2 of volute, by increasing the size of air guide fan conversion interface in height direction, thereby increasing the output air volume of air guide fan by increasing the butt joint position area of conversion interface. By installing movable adjusting block in the top of inlet portion of air guide fan conversion interface, movable adjusting block is used to block the clearance in height direction between the top end of air outlet of volute and inlet portion, to prevent air leakage, and effectively solve the technical problem that the size of conversion interface and the air outlet of volute of air guide fan does not match.

[0028] Preferably, movable adjusting block 1 can be adjusted in size to expand the versatility of conversion interface, i.e. by adjusting the size of movable adjusting block 1 to realize the installation of the same specification conversion interface matched with the size of air outlet 101 of different volute 100, and the versatility is strong.

[0029] Preferably, movable adjusting block 1 includes plug body 11 and end protruding limiting block 12, plug body 11 is embedded into the clearance 5 in height direction between the top end of air outlet 101 of volute 100 and inlet portion 2, limiting block 12 is located outside inlet portion 2 and is stopped by the end face of inlet portion 2, and installation positioning is convenient.

[0030] Preferably, the plug body 11 is provided with a mounting hole 13, the screw 6 passes through the outlet portion 3, the mounting hole 13 of the plug body 11 and the air outlet 101, and the outlet portion 3, the movable adjusting block 1 and the air outlet 101 are mounted and connected, and the mounting and connection is simple.

[0031] Preferably, the outlet portion 3, the inlet portion 2 and the excess portion 4 are integrally cast.

[0032] Preferably, the cross-sectional shape of the outlet portion 3 is a hollow cylinder, and the cross-sectional shape of the inlet portion 2 is a rectangle.

[0033] Embodiment two:

[0034] A blower fan, comprising a volute 1 and a blower fan conversion interface installed at an air outlet 101 of the volute 100, characterized in that the blower fan conversion interface is the blower fan conversion interface as described in embodiment one. It increases the output air volume of the blower fan by increasing the area of the docking position of the conversion interface without changing the performance of the motor, that is, by increasing the size of the conversion interface in the height direction to increase the area of the docking position of the conversion interface and increase the output air volume of the blower fan. The movable adjusting block is installed inside the top of the inlet portion of the blower fan conversion interface, and the movable adjusting block is used to block the gap between the top end of the air outlet of the volute and the inlet portion in the height direction to prevent air leakage and effectively solve the technical problem of the mismatch between the conversion interface and the air outlet size of the volute of the blower fan.

[0035] The above embodiments are preferred embodiments of the present application, but the embodiments of the present application are not limited thereto, and any changes, modifications, substitutions, combinations and simplifications made without departing from the spirit and principles of the present application are equivalent replacement methods, and are all included in the protection scope of the present application.

Claims

1. A fan converter interface comprising an inlet section (2) connected to an outlet (101) of a volute (100), an outlet section (3) connected to a load duct, and an overpass section (4) connecting the inlet section (2) and the outlet section (3), the overpass section (4) being inclined upwards such that the positions of the outlet section (2) and the inlet section (3) are staggered in the height direction, characterized in that: The inner cavity height H1 of the inlet part (2) is at least 3mm higher than the outlet height H2 of the volute (100), and a movable adjusting block (1) is installed inside the top of the inlet part (2), which is used to block the gap (5) between the top of the outlet (101) of the volute (100) and the inlet part (2) in the height direction.

2. An air mover conversion interface according to claim 1, wherein: The movable adjusting block (1) comprises a plug body (11) and a protruding limiting block (12), the plug body (11) is embedded into the gap (5) between the top of the outlet (101) of the volute (100) and the inlet part (2) in the height direction, and the limiting block (12) is located outside the inlet part (2) and is pressed against the end face of the inlet part (2).

3. A fan changer interface according to claim 2, characterized in that: The plug body (11) is provided with a mounting hole (13), and a screw (6) passes through the outlet part (3), the mounting hole (13) of the plug body (11) and the outlet (101) to connect the outlet part (3), the movable adjusting block (1) and the outlet (101).

4. A wind turbine converter interface according to claim 1 or 2 or 3, wherein: The movable adjusting block (1) can be adjusted in size to expand the versatility of the conversion interface, that is, the same size conversion interface is matched with the size of the outlet (101) of different volutes (100) by adjusting the size of the movable adjusting block (1).

5. A fan changer interface according to claim 4, characterized in that: The outlet part (3), the inlet part (2) and the transition part (4) are integrally cast.

6. A fan changer interface according to claim 5, characterized in that: The cross-sectional shape of the outlet part (3) is a hollow cylinder, and the cross-sectional shape of the inlet part (2) is a rectangle.

7. An induced draft fan comprising a volute (100) and an induced draft fan conversion interface mounted at an air outlet (101) of the volute (100), characterized in that: The induced draft fan conversion interface is the induced draft fan conversion interface according to any one of claims 1 to 6.

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