CN211261034U - Fan rear-mounted external wall-mounted fresh air fan - Google Patents
Fan rear-mounted external wall-mounted fresh air fan Download PDFInfo
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- CN211261034U CN211261034U CN201921800358.7U CN201921800358U CN211261034U CN 211261034 U CN211261034 U CN 211261034U CN 201921800358 U CN201921800358 U CN 201921800358U CN 211261034 U CN211261034 U CN 211261034U
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Abstract
The utility model relates to a fan rear-mounted external wall-mounted fresh air fan, which comprises a centrifugal fan, an air filter layer, a casing and a cavity-dividing cover, wherein the casing comprises a casing back plate, a casing side plate and a casing panel, and the cavity-dividing cover is fixed in the casing inner cavity to divide the casing inner cavity into a fan cavity and a filter cavity; the centrifugal fan is fixed in the fan cavity, and the air filtering layer is arranged in the filtering cavity; the shell is arranged on the outer wall surface of the outer wall of the room; an air inlet is formed in a shell side plate or a shell panel of the filter cavity; an air outlet is arranged on the shell back plate or the shell side plate of the fan cavity; the cavity cover is provided with an air inlet which is communicated with an air suction inlet of a rotary impeller of the centrifugal fan, the air outlet is communicated with an air inlet wall hole arranged on the outer wall of the room, and filtered outdoor air enters the room through the air inlet wall hole. The utility model discloses compact structure, simple to operate, especially equipment setting are on room outside wall, and airflow channel reasonable in design, the noise is outdoor, and is less to indoor influence.
Description
Technical Field
The utility model relates to a new fan of external hanging of fan rear-mounted.
Background
Some current new fans adopt indoor hanging mode or because of new fan airflow channel designs unreasonablely, or design because of not utilizing centrifugal fan rotary impeller design air-out characteristics fully again, and this structure is not only to the interior space occupy an area greatly, also leads to great noise.
Disclosure of Invention
The utility model discloses improve above-mentioned problem, promptly the to-be-solved technical problem of the utility model is that current new fan installation or airflow channel design are unreasonable, lead to the space occupy-up big noise great.
The utility model discloses a concrete implementation scheme is: a fan rear-mounted external wall-mounted fresh air fan comprises a centrifugal fan, an air filtering layer, a shell and a cavity dividing cover, wherein the shell comprises a shell back plate, a shell side plate and a shell panel;
the centrifugal fan is fixed in the fan cavity, and the air filtering layer is arranged in the filtering cavity;
the shell is arranged on the outer wall surface of the outer wall of the room;
an air inlet is formed in a shell side plate or a shell panel of the filter cavity;
an air outlet is arranged on the shell back plate or the shell side plate of the fan cavity;
an air inlet is arranged on the cavity dividing cover and is communicated with an air suction inlet of a rotary impeller of the centrifugal fan;
the air outlet is communicated with an air inlet wall hole formed in the outer wall of the room or the air outlet is communicated with the air inlet wall hole through an air pipe, and filtered outdoor air enters the room through the air inlet wall hole.
Furthermore, the cavity dividing cover is formed by fixedly connecting a cavity dividing partition plate and a cavity dividing windward plate; the edge of the cavity-dividing cover is fixedly connected with the inner wall of the shell, the cavity-dividing windward plate is close to the centrifugal fan rotating impeller, and the windward port is formed in the cavity-dividing windward plate; gaps which are convenient for air to pass through are arranged between the cavity windward plate and the shell panel and between the cavity separation plate and the filter layer, so that the filtered air can pass through.
Furthermore, the fan cavity is enclosed by the casing backplate, the casing curb plate and the wind cavity cover and closes and forms, and the filter cavity is enclosed by the casing panel, the casing backplate, the casing curb plate, divides the chamber cover and closes and forms.
Furthermore, the centrifugal fan is a backward-inclined or forward-inclined or middle-inclined fan, and a volute is not arranged outside a fan rotating impeller of the centrifugal fan, so that air discharged by the fan rotating impeller of the centrifugal fan can freely enter a fan cavity space and is collected to the air outlet.
Furthermore, the edge of the air filter layer is attached to the inner surface peripheral side of the casing, so that air entering from the air inlet can completely enter the centrifugal fan after passing through the air filter layer, and a limiting part for limiting the air filter layer is arranged in the casing.
Furthermore, the rotating shaft of the centrifugal fan is eccentrically installed relative to the back plate of the shell of the fan cavity.
Furthermore, the distance between the rotating shaft of the rotating impeller of the centrifugal fan and the cavity separation plates and the side plates of the shell around the rotating impeller is gradually increased along the rotating direction of the impeller.
Furthermore, the air outlet and the centrifugal fan are respectively arranged on two sides of the fan cavity.
Furthermore, a flow guide piece is fixed on a side plate of the shell in the fan cavity or an end angle of the side plate, and the flow guide piece is a sound absorption flow guide block or a flow guide plate.
Furthermore, a volute is arranged outside a fan rotating impeller of the centrifugal fan, an outlet of a volute channel of the volute faces to the air outlet, and the edge of the volute is fixedly connected with the inner wall of the fan cavity.
Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses compact structure, simple to operate, especially equipment setting are on room outside wall, and airflow channel reasonable in design, the noise is outdoor, and is less to indoor influence.
Drawings
Fig. 1 is a schematic view of a structure according to an embodiment of the present invention (the air filter layer is folded plate-shaped and the air outlet is located on the back plate of the housing).
Fig. 2 is a schematic diagram of a-a structure in fig. 1 according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of B-B in fig. 1 according to an embodiment of the present invention.
Fig. 4 is a schematic structural view of the second embodiment of the present invention (the air filter layer is arc-shaped and the air outlet is disposed on the side plate of the housing).
Fig. 5 is a schematic cross-sectional view of the second embodiment of the present invention taken along line C-C in fig. 4.
Fig. 6 is a schematic cross-sectional view of the embodiment of the present invention taken along line D-D in fig. 4.
Fig. 7 is a schematic view of the third structure of the embodiment of the present invention (the air outlet is connected to the air inlet hole through the air pipe).
Fig. 8 is a schematic diagram of a fourth structure according to an embodiment of the present invention (the air filter layer is flat and the air outlet is disposed on the housing back plate).
Fig. 9 is a schematic cross-sectional view of the cross-sectional view of E-E in fig. 8 according to an embodiment of the present invention.
Fig. 10 is a schematic structural view of a cross-sectional structure in F-F of fig. 8 according to an embodiment of the present invention.
Fig. 11 is a schematic structural diagram of a fifth embodiment of the present invention (a centrifugal fan has a volute outside a rotating impeller).
In the figure: 100-outer wall body, 101-air inlet wall hole, 102-adjustable air outlet, 103-air pipe, 10-centrifugal fan, 110-centrifugal fan rotary impeller air suction inlet, 120-volute, 130-centrifugal fan impeller, 20-air filter layer, 210-limit frame, 401-fan cavity, 402-filter cavity, machine shell-30, 310-machine shell back plate, 320-machine shell side plate, 321-air inlet, 330-machine shell panel, 40-cavity separating cover, 410-cavity separating baffle, 420-cavity separating windward plate, 403-sound-absorbing guide block, 404-guide plate, 421-windward port, 430-ventilation gap, 301-air outlet, 104-cable.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in FIGS. 1-2, the first embodiment: a fan rear-mounted external wall-mounted fresh air fan comprises a centrifugal fan 10, an air filtering layer 20, a shell 30 and a cavity dividing cover 40, wherein an air inlet wall hole 101 is formed in an outer wall 100 of a room and used for introducing filtered outdoor air, and the shell is mounted on the outer wall surface of the outer wall of the room;
the casing 30 comprises a casing back plate 310, a casing side plate 320 and a casing panel 330, a cavity division cover 40 is fixed in the casing inner cavity to divide the casing inner cavity into a fan cavity 401 and a filter cavity 402, and the cavity division cover comprises a cavity division partition plate 410 and a cavity division windward plate 420 which are fixedly connected;
the centrifugal fan 10 is arranged in a fan cavity, the air filter layer 20 is arranged in a filter cavity, the fan cavity is enclosed by a shell back plate, a shell side plate and a sub-cavity cover, and the filter cavity is enclosed by a shell panel, a shell back plate, a shell side plate and a sub-cavity cover;
in this embodiment, the centrifugal fan 10 is fixed on the back plate of the casing; the edge of the cavity division cover is fixedly connected with the inner wall of the machine shell, and the air filter layer is folded into a plate shape.
In practical design, the fan can be fixed on the sub-cavity cover or the shell side plate.
An air inlet 421 is arranged on the cavity windward plate 420, and the air inlet 421 is communicated with the suction inlet 110 of the centrifugal fan rotating impeller;
in this embodiment, an air inlet 321 is disposed on the side plate 320 of the housing in the filter chamber;
an air outlet 301 is arranged on the casing back plate 310 of the fan cavity 401, and the air outlet 301 is communicated with one end of the air inlet wall hole 101 close to the outside.
In this embodiment, the cavity-dividing partition 410 is perpendicular to the housing back plate, the cavity-dividing windward plate 420 is parallel to the housing back plate, the cavity-dividing windward plate is close to the rotating impeller of the centrifugal fan, and ventilation gaps 430 for allowing air to pass through are disposed between the cavity-dividing windward plate and the housing panel, and between the cavity-dividing partition and the filter layer.
The air outlet position is diagonal setting with centrifugal fan, and the end angle in fan chamber 401 still is provided with inhales sound water conservancy diversion piece 403, inhales sound water conservancy diversion piece 403 medial surface and is the arc to thereby avoid strikeing to the turning from centrifugal fan exhaust wind and lead to wind-force to weaken thereby reduce windage and noise.
The centrifugal fan is a backward inclined fan, a forward inclined fan or a middle inclined fan can be adopted in the actual design, and the centrifugal fan is a DC fan or an EC fan.
The air inlet 321 is arranged on one side surface or two side surfaces of the shell side plate in the filter cavity, and the air inlet is a circular hole or a grid.
The shell panel and the shell side plate or the shell side plate and the shell panel and the shell back plate are detachably connected, and the detachable connection can be realized by adopting magnetic attraction, a fastening bolt or a bolt and the like so as to be beneficial to replacing the air filter layer.
In this embodiment, the edge of the air filter layer is attached to the periphery of the inner surface of the casing, so that the air entering from the air inlet can completely pass through the air filter layer and then is guided into the centrifugal fan.
In this embodiment, the inside of the casing has a limiting frame for limiting the air filtering layer, and the air filtering layer is embedded in the limiting frame 210.
In practical design, the air filter layer can be fixed on the inner wall of the casing in a bolt mode, and the inner wall of the casing can be provided with a notch or a fixed support plate and other limiting parts for supporting and limiting the air filter layer.
The centrifugal fan is fixed on the shell back plate or the cavity-divided windward plate, and the centrifugal fan is eccentrically installed relative to the plane of the shell back plate in the fan cavity.
In the utility model, the arrow mark in the figure is the airflow flowing direction, and the air flowing direction is, outdoor-air inlet-filter chamber-air filter layer-ventilation gap-chamber windward plate windward port 421-centrifugal fan rotary impeller air inlet-fan chamber-air outlet-air inlet wall hole-indoor.
In order to conveniently adjust indoor air inlet, an adjustable air outlet 102 is arranged at one end in the air inlet wall hole, and the adjustable air outlet 102 can be used as a valve for controlling and adjusting the opening and closing of the air outlet so as to prevent outdoor strong wind from entering the room.
Example two: the difference from the first embodiment lies in that the air filter layer in this embodiment is in an arc plate shape, two ends of the air filter layer are fixed at two diagonal ends of the side plate of the casing, the air outlet is arranged on the side plate of the casing, the air outlet is communicated with the air inlet wall hole, the side plate of the casing where the air outlet is arranged is fixed on the outer wall surface of the room, the distance between the rotating shaft of the rotating impeller of the centrifugal fan and the cavity separating plate and the side plate of the casing around the rotating shaft of the rotating impeller of the centrifugal fan is gradually increased along the rotating direction of the impeller, so that the wind resistance is reduced, and the air discharged by.
In the third embodiment, the difference from the first embodiment is that the air outlet is located on the side plate, and the air outlet is communicated with the air inlet wall hole through the air pipe 103.
In a fourth embodiment, the difference between the first embodiment and the second embodiment is that the air filter layer in this embodiment is a straight plate, the air filter layer in this embodiment is fixed on the side plates of the enclosure on the two corresponding sides, and the two side edges of the air filter layer are attached to the inner surfaces of the panel and the back plate of the enclosure. In this embodiment, a flow guide plate 204 is further disposed at an end corner in the fan cavity 201.
In this embodiment, the inner side surface of the guide plate 204 is arc-shaped, so that the wind force is prevented from weakening due to the fact that the wind discharged from the centrifugal fan collides with the corner, noise can be reduced, and wind resistance can be reduced
In the above embodiment, the outer portion of the fan rotating impeller of the centrifugal fan has no volute, so that the air discharged by the fan rotating impeller of the centrifugal fan freely enters the space of the fan cavity and is collected to the air outlet, thereby reducing wind resistance and reducing noise.
In the fifth embodiment, the new fan includes a centrifugal fan 10, an air filter layer 20, a casing 30 and a cavity dividing cover 40, an air inlet wall hole 101 is formed in an outer wall 100 of a room for introducing filtered outdoor air, and the casing is installed on the outer wall surface of the outer wall of the room; the casing 30 comprises a casing back plate 310, a casing side plate 320 and a casing panel 330, a cavity division cover 40 is fixed in the casing inner cavity to divide the casing inner cavity into a fan cavity 401 and a filter cavity 402, and the cavity division cover comprises a cavity division partition plate 410 and a cavity division windward plate 420 which are fixedly connected; an air inlet 421 is arranged on the cavity windward plate 420, and the air inlet 421 is communicated with the suction inlet 110 of the centrifugal fan rotating impeller; in this embodiment, an air inlet 321 is disposed on the side plate 320 of the housing in the filter chamber;
an air outlet 301 is arranged on the casing back plate 310 of the fan cavity 401, and the air outlet 301 is communicated with one end of the air inlet wall hole 101 close to the outside.
The centrifugal fan 10 is arranged in a fan cavity, the air filter layer 20 is arranged in a filter cavity, the fan cavity is enclosed by a shell back plate, a shell side plate and a sub-cavity cover, and the filter cavity is enclosed by a shell panel, a shell back plate, a shell side plate and a sub-cavity cover;
an air inlet 421 is arranged on the cavity windward plate 420, and the air inlet 421 is communicated with the suction inlet 110 of the centrifugal fan rotating impeller;
in this embodiment, an air inlet 321 is disposed on the side plate 320 of the housing in the filter chamber;
an air outlet 301 is arranged on the casing back plate 310 of the fan cavity 401, and the air outlet 301 is communicated with one end of the air inlet wall hole 101 close to the outside.
In this embodiment, the centrifugal fan 10 is fixed on a back plate of the casing, a scroll 210 is arranged outside a rotating impeller of the centrifugal fan, the scroll 210 is provided with a windward port through which the centrifugal fan sucks in filtered air, an outlet of the scroll 210 faces the air outlet 301, and an edge of the scroll is fixedly connected with an inner wall of a fan cavity.
In the above embodiment, the cable 104 for controlling the operation of the centrifugal fan is inserted into the room through the air inlet wall hole.
Any technical solution disclosed in the present invention is, unless otherwise stated, disclosed a numerical range if it is disclosed, and the disclosed numerical range is a preferred numerical range, and any person skilled in the art should understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Because numerical value is more, can't be exhaustive, so the utility model discloses just disclose some numerical values with the illustration the technical scheme of the utility model to, the numerical value that the aforesaid was enumerated should not constitute right the utility model discloses create the restriction of protection scope.
The utility model discloses if disclose or related to mutual fixed connection's spare part or structure, then, except that other the note, fixed connection can understand: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In addition, the terms used in any aspect of the present disclosure as described above to indicate positional relationships or shapes include similar, analogous, or approximate states or shapes unless otherwise stated.
The utility model provides an arbitrary part both can be assembled by a plurality of solitary component parts and form, also can be the solitary part that the integrated into one piece technology was made.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.
Claims (10)
1. The fan rear-mounted external wall-mounted fresh air fan is characterized by comprising a centrifugal fan, an air filtering layer, a shell and a cavity dividing cover, wherein the shell comprises a shell back plate, a shell side plate and a shell panel;
the centrifugal fan is fixed in the fan cavity, and the air filtering layer is arranged in the filtering cavity;
the shell is arranged on the outer wall surface of the outer wall of the room;
an air inlet is formed in a shell side plate or a shell panel of the filter cavity;
an air outlet is arranged on the shell back plate or the shell side plate of the fan cavity;
an air inlet is arranged on the cavity dividing cover and is communicated with an air suction inlet of a rotary impeller of the centrifugal fan;
the air outlet is communicated with an air inlet wall hole formed in the outer wall of the room or the air outlet is communicated with the air inlet wall hole through an air pipe, and filtered outdoor air enters the room through the air inlet wall hole.
2. The external wall-mounted fresh air fan with the rear-mounted fan according to claim 1, wherein the cavity dividing cover is formed by fixedly connecting a cavity dividing partition plate and a cavity dividing windward plate; the edge of the cavity-dividing cover is fixedly connected with the inner wall of the shell, the cavity-dividing windward plate is close to the centrifugal fan rotating impeller, and the windward port is formed in the cavity-dividing windward plate; gaps which are convenient for air to pass through are arranged between the cavity windward plate and the shell panel and between the cavity separation plate and the filter layer, so that the filtered air can pass through.
3. The external wall-mounted fresh air fan with the rear-mounted fan as claimed in claim 1, wherein the fan cavity is defined by a casing back plate, a casing side plate and a fan cavity cover, and the filter cavity is defined by a casing panel, a casing back plate, a casing side plate and a sub-cavity cover.
4. The external wall-mounted fresh air fan with the rear-mounted fan according to claim 1, wherein the centrifugal fan is a backward-inclined fan or a forward-inclined fan or a middle-inclined fan, and a fan rotating impeller of the centrifugal fan is free of a volute outside so that air exhausted by the fan rotating impeller can freely enter the fan cavity space and is collected to the air outlet.
5. The external wall-mounted fresh air blower with the rear-mounted fan as claimed in claim 1, wherein the edge of the air filter layer is attached to the periphery of the inner surface of the casing, so that air entering from the air inlet can completely pass through the air filter layer and then enter the centrifugal fan, and the casing is internally provided with a limiting piece for limiting the air filter layer.
6. The external wall-mounted fresh air fan with the rear-mounted fan as claimed in any one of claims 1 to 5, wherein the rotating shaft of the centrifugal fan is eccentrically mounted with respect to the casing back plate of the fan cavity.
7. The external wall-mounted fresh air fan with the rear-mounted fan according to any one of claims 1 to 5, wherein the distance between the rotating shaft of the rotating impeller of the centrifugal fan and the cavity-separating partition plates and the side plates of the casing around the rotating shaft is gradually increased along the rotating direction of the impeller.
8. The external wall-mounted fresh air fan with the rear-mounted fan according to any one of claims 1 to 5, wherein the air outlet and the centrifugal fan are respectively arranged on two sides of the fan cavity.
9. The external wall-mounted fresh air fan with the rear-mounted fan according to any one of claims 1 to 5, wherein a flow guide piece is fixed on a side plate of the casing or an end corner of the side plate in the fan cavity, and the flow guide piece is a sound absorption flow guide block or a flow guide plate.
10. The external wall-mounted fresh air fan with the rear-mounted fan according to any one of claims 1 to 3, wherein a scroll is arranged outside a fan rotating impeller of the centrifugal fan, an outlet of a scroll of the scroll faces an air outlet, and the edge of the scroll is fixedly connected with the inner wall of a fan cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921800358.7U CN211261034U (en) | 2019-10-24 | 2019-10-24 | Fan rear-mounted external wall-mounted fresh air fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921800358.7U CN211261034U (en) | 2019-10-24 | 2019-10-24 | Fan rear-mounted external wall-mounted fresh air fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211261034U true CN211261034U (en) | 2020-08-14 |
Family
ID=71955602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921800358.7U Active CN211261034U (en) | 2019-10-24 | 2019-10-24 | Fan rear-mounted external wall-mounted fresh air fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211261034U (en) |
-
2019
- 2019-10-24 CN CN201921800358.7U patent/CN211261034U/en active Active
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