TWI667413B - Ventilation fan - Google Patents

Abstract

A ventilation fan is used to solve the problem that most components of a conventional exhaust fan and an intake fan cannot be universally used and are not easy to maintain. The ventilating fan of the present invention includes: a main frame base provided with a first rotary buckle portion; and a fan having a fan frame and a fan wheel, and the fan wheel is rotatably provided on the fan frame. Inside, the second end of the fan frame is respectively provided with a second turn-fastening portion, and the second turn-locking portion of one end of the fan frame is combined with the first turn-locking portion of the main frame base.

Description

Ventilation fan

The present invention relates to a fan, especially a ventilation fan.

Please refer to FIG. 1, which is a conventional ventilation fan 9. The conventional ventilation fan 9 has a fan frame 91 and an impeller 92. The fan frame 91 has an air guide 911 at both ends of the fan frame 91. The fan frame 91 is provided with a base 912 located between the two air guides 911. The base 912 is connected to the inner wall surface of the fan frame 91 by a plurality of ribs 913. The impeller 92 is assembled on the base 912 and can be located there. The fan frame 91 rotates. An embodiment similar to the conventional ventilation fan 9 has been disclosed in the “Ventilation Fan” patent case of China Announcement No. 205013346.

However, since the impeller 92 of the conventional ventilation fan 9 is directly assembled on the base 912 in the fan frame 91, and the base 912 is not removable, the conventional ventilation fan 9 is once installed. The direction of the impeller 92 driving airflow is fixed and cannot be changed. In other words, the type of the impeller 92 mounted on the conventional ventilation fan 9 directly determines that the conventional ventilation fan 9 can only perform a fixed exhaust function as an exhaust fan, or can only perform a fixed intake function as an inlet fan. Therefore, most components of the exhaust fan and the inlet fan cannot be used in common, so that the exhaust fan and the inlet fan need to be separately manufactured, packaged, and warehoused. For manufacturers or sellers, the burden of various costs is large.

On the other hand, the base 912, the plurality of ribs 913, and the inner wall surface of the fan frame 91 are integrally formed and connected, and a part of the impeller 92 is fixedly positioned to the base 912 by a locking element such as a screw. . Therefore, when the impeller 92 is faulty and needs to be replaced, it is directly disassembled. It is not easy, so maintenance personnel will often need to remove the entire group of ventilation fans 9 from the installation site (such as ceilings, walls or doors and windows), and then disassemble and assemble the impeller 92, which is very time-consuming and labor-intensive, so most people choose Direct replacement of the entire group of ventilation fans 9 will cause unnecessary waste, which is not environmentally friendly and will cause a higher burden on consumers.

In view of this, the conventional ventilation fan does still need to be improved.

In order to solve the above problems, the object of the present invention is to provide a ventilating fan. The main frame base and the fan are universal, and there is no need to select corresponding components according to the exhaust or air intake function, as long as the installation direction of the fan is changed Determines the direction of the airflow of the ventilation fan.

Another object of the present invention is to provide a ventilation fan, which is relatively easy to disassemble or assemble between the fan and the main frame base, which can improve the convenience of replacing the fans without having to replace the entire group of ventilation fans.

The “indoor” in the present invention refers to a space that is used as a flow control tube, and the “outdoor” refers to a space that is not used as a flow control tube. For example, when the exhaust function is performed, the space to be ventilated is "indoor"; when the air intake function is performed, the space subjected to wind is "indoor".

In addition, the following directional or similar terms of the present invention, such as "upper (top)", "lower (bottom)", "inside", "outside", "side", etc., refer mainly to the directions of the attached drawings Each directionality or its approximate terms is only used to assist in explaining and understanding the embodiments of the present invention, and is not intended to limit the present invention.

The ventilating fan of the present invention includes a main frame base provided with a first screwing portion, the main frame base having a flared frame and a flow guiding tube, and the flaring frame and the flow guiding tube are relatively Connected and communicated with each other internally, the first rotary buckle portion is provided adjacent to the flared frame and connected to the deflector; and a fan having a fan frame and a wheel, the fan frame having a ring wall and provided at A base in the ring wall, the fan wheel is rotatably disposed in the fan frame, and the fan wheel is assembled on the base and can be rotated in the space surrounded by the ring wall, and the axial direction of the fan frame A second turn-fastening portion is respectively provided at the two ends, and the two second turn-fastening portions are respectively provided at the axial two ends of the ring wall, and the fan frame includes a second turn-fastening portion at one end thereof. Combined with the first turn-locking part of the main frame base.

According to this, the main frame base and the fan of the ventilating fan of the present invention are universal. There is no need to select the corresponding main frame base and fan according to the exhaust or air intake function, as long as the direction of the fan to the main frame base is changed, that is, The direction of the wind guide of the ventilating fan can be determined, so that the ventilating fan can perform the function of exhausting or entering air as expected. In other words, the main frames and fans used by the "exhaust fan" and "intake fan" are the same. Therefore, in terms of manufacturing, packaging, and storage management, there is no need to classify according to the direction of the airflow, which can greatly reduce Multiple costs for the manufacturer or seller.

In addition, the ventilating fan of the present invention is quite easy to disassemble or assemble between the fan and the main frame base. Therefore, when the fan needs to be replaced or maintained, the fan originally attached to the main frame base can be directly removed and replaced. Or you can install and maintain the fan after maintenance. It is not necessary to remove the entire group of fans from the mounting fixture. In this way, the convenience of operation during assembly and the convenience and efficiency of replacing fans can be improved. It is not necessary to replace the entire group of ventilation fans, which can avoid unnecessary waste. It is environmentally friendly and can reduce the cost of replacement or maintenance to reduce consumers. burden.

Wherein, an abutment portion is formed on the outer surface of the flared frame, and the flared frame is connected to the deflector by the abutment portion. In this way, it has the effects of improving the convenience of operation when the main frame base is assembled to a predetermined position on a fixed object.

The ventilation fan may further include a clamping ring, the clamping ring is sleeved on the outer peripheral surface of the flow guide tube, and the clamping ring has a joint portion opposite to the abutting portion of the flared frame. In this way, it has the effects of improving the convenience of operation when assembling the main frame base to glass.

Wherein, the joint of the clamping ring is a rubber or silicon washer. In this way, the sealing performance when the clamp ring is bonded to glass is improved.

Wherein, a backflow prevention portion is formed on the inner peripheral surface of the lower half of the diversion tube, and the wall thickness of the diversion tube is tapered outward from the vicinity of the flared frame at the backflow prevention portion to form an inside-out direction. Sloping. In this way, it is difficult for the liquid to flow into the flaring frame from the outside, and the fan can be prevented from being damaged.

Among them, the inclination angle of the backflow prevention portion is preferably 1 to 2 degrees. So that can improve The effect of preventing liquid from flowing into the flare from the outside.

Wherein, the outer back surface of the flared frame is tapered toward the flow guiding tube. In this way, it has effects such as improving the convenience of assembly.

The ventilating fan may further include a protective cover, and the protective cover is combined with an end of the air guide tube not connected to the flared frame. In this way, it has the effects of reducing the probability of foreign objects entering into the main frame base, and reducing the impact of foreign objects on the smoothness of the rotation of the fan wheel.

Wherein, the first turn-fastening portion has a slip-off prevention plate, which is connected to the inner surface of the flared frame to form a rotation groove, and the slip-off prevention plate is provided with at least one pair of positional gaps communicating with the rotation groove The slot and at least one positioning portion, each of the second turning portions has at least one turning fastener, and the turning component is provided with a positioning portion to be combined with the positioning portion of the first turning portion. In this way, the structure is simple and easy to manufacture and assemble, and has the effects of reducing manufacturing costs and improving assembly convenience.

Wherein, the positioning portion of the first turn-locking portion is a latch, and the positioning portion of the second turn-locking portion is an elastic piece, and the elastic piece is aligned to the corresponding latch opening. In this way, it has effects such as improving the convenience of assembly.

Wherein, the positioning portion of the first screwing portion and the positioning portion of the second screwing portion are respectively a lock hole, and the two lock holes are opposite to each other for a locking element to pass through the lock. In this way, it has effects such as improving the convenience of assembly.

The number of the alignment gaps and the positioning portions are several, and the loops are arranged on the anti-detachment plate. The number of the rotary fasteners corresponds to the number of the alignment gaps. In this way, it has the effects of improving the combination and stability of the main frame base and the fan.

The ventilating fan may further include a filter screen, the filter screen is provided with a third rotary buckle part, and the third rotary buckle part of the filter net is combined with the second rotary buckle part of the fan which is not connected to the flared frame. In this way, the air flow blown into the room from the outside can be filtered by the filter, which has the effects of improving the quality of the air blown into the room.

The ventilation fan may further include a panel, the panel is provided with a plurality of vents, the panel is combined with the flared frame, and the fan is located in a space surrounded by the flared frame and the panel. The filter is located between the fan wheel and the air outlet of the panel. In this way, the fan can be protected by the panel from being impacted by foreign objects, and at the same time, the aesthetic appearance of the fan when viewed from the indoor can be improved.

Wherein, the filter has a ring frame portion, a net portion is provided in the hollow portion of the ring frame portion, the third turn-locking portion has at least one baffle and at least one latch, and the baffle and the latch are connected On the inner peripheral surface of the ring frame portion, the baffle plate and the latching member are spaced apart in the axial direction of the ring frame portion, and one of the rotary fasteners of the fan penetrates between the baffle plate and the latching member and is locked The latch is combined with the latch member. In this way, the structure is simple and easy to manufacture and assemble, and has the effects of reducing manufacturing costs and improving assembly convenience.

Wherein, the baffle plate and the latch are offset from each other in the axial direction of the ring frame portion. In this way, it has the effects of improving the smoothness of operation when the rotary fastener is rotated and combined with the latch.

Wherein, the positioning portion of the second turn-locking portion is a lock hole, and the latching member of the third turn-locking portion is provided with a convex arc body, and the convex arc body is positioned to fix the lock hole. In this way, it can be quickly locked and disengaged by a simple structure, and has the effects of improving the convenience and efficiency of operation when assembling and disassembling the filter.

Wherein, the number of the rotary fasteners of each of the second rotary fastener portions is several, and the plurality of rotary fasteners of the second second rotary fastener portions are dislocated in the axial direction of the fan frame. In this way, it has effects such as improving the convenience of assembly.

〔this invention〕

1‧‧‧ main frame

1a‧‧‧flare box

1b‧‧‧Diversion tube

11‧‧‧The first turn button

111‧‧‧anti-fall off plate

112‧‧‧rotating groove

113‧‧‧ Missing slot

114‧‧‧Positioning Department

114a‧‧‧Clip

114b‧‧‧ keyhole

12‧‧‧Abutting Department

13‧‧‧Backflow prevention department

2‧‧‧fan

2a‧‧‧fan frame

2b‧‧‧fan

21‧‧‧ ring wall

211‧‧‧air duct

22‧‧‧ base

23‧‧‧Second Turning Section

231‧‧‧Swivel fastener

232‧‧‧Positioning Department

232a‧‧‧ shrapnel

232b‧‧‧Keyhole

3‧‧‧Clamping ring

31‧‧‧Combination

4‧‧‧ Panel

41‧‧‧Vent

5‧‧‧ protective cover

6‧‧‧ Filter

61‧‧‧Ring frame

62‧‧‧Net Department

63‧‧‧The third turn buckle

631‧‧‧ bezel

632‧‧‧ detent

633‧‧‧ convex arc

7‧‧‧ check valve

G‧‧‧Fixture

S‧‧‧Locking element

〔Usually〕

9‧‧‧ ventilation fan

91‧‧‧fan frame

911‧‧‧air duct

912‧‧‧base

913‧‧‧ rib

92‧‧‧ Impeller

Figure 1: Schematic diagram of a conventional ventilation fan.

FIG. 2 is a schematic diagram of a three-dimensional exploded structure of an embodiment of the present invention.

FIG. 3 is a partially cutaway three-dimensional exploded structure diagram of an embodiment of the present invention.

FIG. 4 is a schematic cross-sectional view of a structure in which a fan rotary buckle is combined with a main frame base according to an embodiment of the present invention.

FIG. 5 is a cross-sectional structural diagram of a fan frame combined with a main frame base according to an embodiment of the present invention.

FIG. 6 is a schematic diagram of a partial anatomy view of an embodiment of the present invention.

FIG. 7 is a schematic cross-sectional structure diagram when a filter screen is combined with a fan according to an embodiment of the present invention.

FIG. 8 is a schematic cross-sectional view of a structure in which a filter screen is combined with a fan according to an embodiment of the present invention.

FIG. 9 is a schematic diagram of an implementation of an embodiment of the present invention during air intake.

FIG. 10 is a schematic diagram of an embodiment of the present invention during exhausting.

In order to make the above and other objects, features, and advantages of the present invention more comprehensible, the following describes the preferred embodiments of the present invention and the accompanying drawings in detail, as follows: Please refer to FIG. According to an embodiment of the ventilation fan of the present invention, the ventilation fan generally includes a main frame base 1 and a fan 2, and the fan 2 is detachably combined with the main frame base 1.

Referring to FIGS. 2 and 6, the main frame base 1 may include a flared frame 1 a and a diversion tube 1 b. The flared frame 1 a and the diversion tube 1 b are connected and communicated internally; the main frame base 1 When bound to a fixed object G (the fixed object G as defined in the present invention refers to, for example, a wall, a ceiling, a glass door or a window, or other objects which can be supported and provided with a ventilation fan on the building decoration), the flared frame 1a may face Indoors, and the ends of the deflector 1b are directed to the outside, to guide the indoor gas through the fan 2 and the deflector 1b to be discharged to the outside, or to guide the outdoor gas through the deflector 1b and the The fan 2 is blown into the room.

Please refer to FIGS. 2 and 3. In detail, the main frame base 1 is provided with a first screwing portion 11 for the fan 2 to be screwed together; the first screwing portion 11 may be disposed adjacent to the flaring. The frame 1a is connected to the deflector 1b. For example, without limitation, the first turn-locking portion 11 in this embodiment has a detachment prevention plate 111 connected to the inner surface of the flared frame 1a and between the flared frame 1a and the inner surface of the flared frame 1a. A rotation groove 112 is formed, and at least one pair of positional notches 113 and at least one positioning portion 114 are provided on the anti-dropout plate 111. The at least one pair of positional notches 113 communicate with the rotation groove 112, and the positioning portion 114 is It can be a clip opening 114a or a lock hole 114b or both as shown in the drawing of the embodiment, and the positioning portion 114 is also connected to the rotation groove 112. Among them, the alignment gap 113 The number of the positioning portions 114 is preferably several, and the positioning portions 114 are looped around the anti-detachment plate 111 to improve the stability of the rotation buckle combined with the fan 2.

Referring to FIGS. 3 and 6, an abutment portion 12 may be formed on the outer surface of the flared frame 1 a. The flared frame 1 a may be connected to the deflector 1 b by the abutment portion 12 to make the main frame base 1. The abutting portion 12 can abut the surface of the fixed object G facing the room, and the end of the flow guide tube 1b can be projected to the outside. In this embodiment, the outer back surface of the flared frame 1a may be gradually tapered toward the flow guide tube 1b. The area of the flared frame 1a contacting the fixed object G may be reduced, and the flatness of the fixed object G may be avoided. When the degree is not good, the main frame base 1 is difficult to assemble; even the flared frame 1a can be made darker and the panel 4 is lighter, so that the flared frame 1a can be lighter and thinner. Visual effects to enhance texture.

In addition, a backflow prevention portion 13 may be formed on the inner peripheral surface of the lower half of the deflection tube 1b. The wall thickness of the deflection tube 1b is greater than that of the backflow prevention portion 13 and gradually outwards from the vicinity of the flared frame 1a. Shrink to form an inclined shape from the inside out, and the inclination angle is preferably 1 to 2 degrees. According to this, even if liquid (for example, rainwater) infiltrates the diversion tube 1b outdoors, the anti-backflow portion 13 can still guide the liquid to drain outward, making it difficult for the liquid to flow into the flared frame 1a; meanwhile, it is unnecessary to In order to prevent liquid from penetrating, an inclined hole is drilled in the fixture G for the diversion pipe 1b to be installed obliquely, which has the effects of improving the convenience of construction during drilling and the like.

Please refer to FIGS. 2 and 3 again. The fan 2 includes a fan frame 2a and a fan wheel 2b. The fan wheel 2b is rotatably disposed in the fan frame 2a. In this embodiment, the fan frame 2a has a ring wall 21 and a base 22 provided in the ring wall 21. Two axial ends of the ring wall 21 respectively form an air guide 211. The base 22 may be integrally formed, for example. Connected to the inner wall surface of the annular wall 21, the fan wheel 2b is assembled on the base 22 and can rotate in the space surrounded by the annular wall 21, thereby guiding the airflow from one of the aforementioned air guides 211 to the other of the aforementioned Air duct 211.

The fan 2 is also provided with a second screwing portion 23 at two axial ends of the ring wall 21. The second screwing portion 23 at one end of the fan 2 is screwed with the first screwing portion 11 of the main frame 1. , Thereby, the wind direction of the guide airflow is changed (more details later). For example, but without limitation, the second screw-fastening portion 23 of this embodiment has at least one screw-fastening member 231, and the screw-fastening member 231 may be provided with a positioning portion 232 for communicating with the positioning portion of the first screw-fastening portion 11 114 combined with each other. For example, when the positioning portion 114 of the first turning portion 11 is a latching opening 114a, the positioning portion 232 of the second turning portion 23 may be an elastic piece 232a; the positioning portion of the first turning portion 11 When 114 is a locking hole 114b, the positioning portion 232 of the second turn-locking portion 23 may also be a locking hole 232b, so that when the two locking holes 114b and 232b are opposite to each other, a locking element S penetrates and locks. In this embodiment, the positioning portion 114 of the first turning portion 11 is provided with a latch 114a and a locking hole 114b at the same time. Therefore, the positioning portion 232 of the second turning portion 23 includes an elastic piece 232a and a Keyhole 232b.

In addition, the number of the rotation fasteners 231 of each of the second rotation fastening portions 23 preferably corresponds to the number of the alignment notches 113 of the first rotation fastening portion 11. In addition, the number of the rotation fasteners 231 of each of the second rotation fastening portions 23 is preferably several, and the plurality of rotation fasteners 231 of the second second rotation fastening portions 23 are preferably displaced in the axial direction of the fan frame 2a; In this way, after the fan 2 is screw-fastened to the main frame base 1 by a second screw-fastening portion 23 at one end, the second screw-fastening portion 23 at the other end of the fan 2 can be screw-fastened by another component, and the assembly process It is not easy to be blocked in the middle, which helps to improve the convenience of assembly.

Please refer to FIGS. 2 and 9, when the aforementioned fixed object G is glass, the ventilating fan of the present invention may further include a clamping ring 3, and the clamping ring 3 may be fitted on the outer peripheral surface of the guide tube 1 b. The clamping ring 3 has a connecting portion 31 opposite to the abutting portion 12 of the flared frame 1a. According to this, the clamping ring 3 can abut the surface of the fixing object G (glass) facing the outdoor by the joint portion 31, so that the overall ventilation fan can pass the abutting portion 12 of the clamping ring 3 and the flared frame 1a. It is assembled and fixed at a predetermined position on the fixture G (glass). Wherein, the joint portion 31 of the clamping ring 3 may be, for example, a rubber or silicon gasket, so as to improve the sealing performance of the clamping ring 3 with the fixed object G (glass).

The ventilating fan of the present invention may further include a panel 4 which may be combined with the flared frame 1a of the main frame base 1, so that the fan 2 is located in a space surrounded by the flared frame 1a and the panel 4. In order to protect the fan 2 from being impacted by foreign objects by the panel 4, at the same time, the fan 2 is lifted from the room. The aesthetics when looking at the ventilation fan. The panel 4 is provided with a plurality of ventilation openings 41. When the ventilating fan of the present invention is in operation, the fan wheel 2b of the fan 2 can drive the air flow, so that the indoor air can be discharged to the outside through the plurality of ventilation openings 41 of the panel 4, or The outdoor air can be blown into the room through the ventilation holes 41 of the panel 4.

In addition, the ventilating fan of the present invention preferably further includes a protective cover 5 and a filter 6. The protective cover 5 is coupled to an end of the flow guide tube 1 b that is not connected to the flared frame 1 a. The probability in the main frame base 1 can also reduce the influence of foreign objects on the smoothness of the rotation of the fan wheel 2b.

The filter screen 6 includes a ring frame portion 61, a mesh portion 62, and a third turn-fastening portion 63. The mesh portion 62 is provided in the hollow portion of the ring frame portion 61 to ensure that the hollow frame portion 61 can pass through the hollow portion of the ring frame portion 61. The passing air can be filtered by the mesh portion 62. The third screwing portion 63 is connected to the ring frame portion 61, so that the filter 6 can be screwed by the third screwing portion 63 to the second screwing portion 23 of the fan 2 which is not connected to the flared frame 1a, and The filter screen 6 can be disposed between the fan wheel 2b and the ventilation opening 41 of the panel 4 to filter the airflow blown into the room from the outside by the mesh section 62, so the filter screen 6 can guide the airflow according to the fan 2. Select whether to set or not.

For example, without limitation, the third turn-locking portion 63 in this embodiment has at least one baffle 631 and at least one latching member 632, and the baffle 631 and the latching member 632 can be connected to the inner periphery of the ring frame portion 61. Surface, the baffle 631 and the latching member 632 are spaced from each other in the axial direction of the ring frame portion 61, so that the combination depth of the ring frame portion 61 and the ring wall 21 of the fan 2 is restricted by the baffle 631, so that When the filter 6 is rotated relative to the ring wall 21, the latching member 632 can be used to engage one of the rotating fasteners 231 of the fan 2; that is, one of the rotating fasteners 231 of the fan 2 can be relatively inserted into the The baffle 631 is engaged with the latching member 632.

Wherein, the baffle 631 and the latching member 632 are preferably offset from each other in the axial direction of the ring frame portion 61 without facing each other, so as to improve the smoothness of the operation for the rotation of the rotary fastener 231 and the combination of the latching. In this embodiment, in order to cooperate with the lock hole 232b provided on the rotary fastener 231, it is better than the card A convex arc body 633 is provided on the detent member 632, and the convex arc body 633 is used to align and lock the locking hole 232b of the rotary fastener 231, and when the filter screen 6 is rotated in the opposite direction, the convex arc body 633 is also It can be easily disengaged from the lock hole 232b, and achieve the effects of improving the convenience and efficiency of operation when assembling and disassembling the filter screen 6. In addition, the number of the baffle 631 and the latching member 632 of the third turn-fastening portion 63 is preferably corresponding to each other, and the plurality of baffles 631 are arranged on the inner peripheral surface of the ring frame portion 61, and each of the cards The detent 632 is positioned approximately at a distance between two adjacent baffles 631.

Referring to FIG. 3, according to the foregoing structure, when the fan 2 is to be coupled to the main frame base 1, the fan 2 can be rotated so that the second turn-fastening portion 23 at one end is combined with the first frame of the main frame base 1.一 旋 扣 部 11。 A spin button 11.

In detail, please refer to FIGS. 3 and 4. In this embodiment, the user can first align the plurality of alignment slots of the main frame base 1 by a plurality of rotary fasteners 231 at one end of the fan 2. 113, and press the fan 2 in the direction of the deflector 1b. Next, referring to FIGS. 3 and 5, the fan 2 is rotated, so that a plurality of rotating fasteners 231 at one end of the fan 2 are synchronously rotated in the rotating groove 112 until the elastic pieces on each of the rotating fasteners 231 are rotated. When 232a is aligned with the latching opening 114a on the anti-dropout plate 111, the elastic piece 232a can automatically latch against the latching opening 114a, and the action of coupling the fan 2 to the main frame base 1 is completed.

It is worth mentioning that, in the embodiment in which the lock-out prevention plate 111 is provided with only the lock hole 114b, the fan 2 is rotated to synchronize a plurality of screw fasteners 231 at one end with the rotation groove 112. After a predetermined stroke, the lock holes 232b on the turn fasteners 231 are aligned to the lock holes 114b on the anti-dropout plate 111. At this time, although the two lock holes 114b and 232b have not been locked by one The component S is locked, but the fan 2 can still be prevented from axially disengaging from the main frame base 1 by the anti-fall-off plate 111, so the user can release the fan 2 first, and then take the locking component S to lock it. The two keyholes 114b and 232b are still quite convenient in operation.

In addition, in the embodiment in which the snap-stop opening 114a and the lock hole 114b are provided on the anti-detachment plate 111 at the same time, when each of the elastic pieces 232a is caught against the corresponding snap-stop opening 114a, The anti-detachment plate 111 prevents the fan 2 from axially disengaging from the main frame base 1, and the clips 232 a and the latch openings 114 a which are engaged with each other prevent the fan 2 from rotating relative to the main frame base 1 again; The combination of the main frame base 1 and the fan 2 is completed, even if the two locking holes 114b and 232b opposite to each other are not locked by the locking element S. If you want to further lock the two lock holes 114b and 232b in opposite positions, you can also ensure that the corresponding two lock holes 114b and 232b are accurately aligned for locking by using the clip 232a and the clip opening 114a which are locked with each other. The fixing element S is locked, so the convenience and efficiency of assembly can be further improved; and the fan 2 and the main frame base 1 are locked by the locking piece 232a and the locking port 114a, and the locking phase is locked by the locking element S. The two lock holes 114b and 232b positioned oppositely can improve the bonding stability between the fan 2 and the main frame base 1.

Please refer to FIG. 6. When the ventilating fan of the present invention is used as an inlet fan, after the fan 2 and the main frame base 1 are combined, the filter screen 6 is further rotated by the third turning portion 63. The fan 2 is not connected to the second screwing portion 23 of the flared frame 1a.

In detail, please refer to FIGS. 3 and 7. In this embodiment, the user can hold the ring frame portion 61 of the filter 6, so that the number of the latching members 632 and the number of the other end of the fan 2 are respectively. The two rotary fasteners 231 are displaced, and the filter screen 6 is pushed in the direction of the fan 2 until the multiple rotary fasteners 231 are blocked by the corresponding baffle 631. Next, referring to FIGS. 3 and 8, the filter screen 6 is rotated so that each of the latching members 632 covers the corresponding rotary fastener 231, and the convex arc body 633 on each of the latching members 632 is aligned and locked. The lock hole 232b on the rotary fastener 231 completes the action of coupling the filter 6 to the fan 2, and then joins the panel 4 (labeled in FIG. 6) to the flaring frame of the main frame base 1. 1a.

Please refer to FIG. 9. In this way, according to the present invention, the airflow can be driven by the fan wheel 2 b of the fan 2, and the outdoor air is guided through the protective cover 5 into the guide tube 1 b and then sequentially passes through. The filter screen 6 and the plurality of ventilation openings 41 of the panel 4 flow into the room to achieve air intake and filtering effects.

Please refer to FIG. 10. In contrast, the ventilation fan of the present invention is intended to be used as an exhaust fan. When in use, the fan 2 can be reversed, and a plurality of turn fasteners 231 on the other end of the fan 2 can be combined with the main frame base 1 to drive the airflow in the reverse direction so that the indoor air can be ventilated through the panel 4 The port 41 flows into the fan 2 and is discharged to the outside through the deflector 1b of the main frame base 1 to achieve the exhaust effect; when used as an exhaust fan, the installation of the filter 6 can be omitted (labeled in Figure 9). . In addition, a check valve 7 is preferably assembled in the deflector 1b of the main frame base 1, and the check valve 7 controls the air flow to be discharged to the outside through the deflector 1b, and the outdoor gas is intended to flow in. In the case of the deflector 1b, the non-return valve 7 can be used to close the deflector 1b to block the airflow, so that the airflow cannot continue to flow to the fan 2 and enter the room.

In summary, the main frame and fan of the ventilating fan of the present invention are universal, and there is no need to select the corresponding main frame and fan according to the exhaust or air intake function, as long as the direction in which the fan is mounted to the main frame is changed , You can determine the direction of the wind guide of the ventilation fan, so that the ventilation fan can perform the function of exhaust or intake as expected. In other words, the main frames and fans used in the "exhaust fan" and "intake fan" are the same. Therefore, in terms of manufacturing, packaging, and storage management, it is no longer necessary to classify according to the direction of the air guide. For example, when you want to pack the components of the "inlet fan", you only need to select the special filter for the "inlet fan", and then match the universal main frame base, fan, clamp ring and panel and other components. For "exhaust fan" components, you only need to select the check valve dedicated to "exhaust fan" and then match the universal main frame seat, fan, clamp ring and panel and other components, so most of the components have Versatility can significantly reduce multiple costs for manufacturers or sellers.

In addition, the ventilating fan of the present invention is quite easy to disassemble or assemble between the fan and the main frame base. Therefore, when the fan needs to be replaced or maintained, the fan originally attached to the main frame base can be directly removed and replaced. Or you can install and maintain the fan after maintenance. It is not necessary to remove the entire group of fans from the mounting fixture. In this way, the convenience and efficiency of fan replacement can be improved, and the entire group of ventilation fans need not be replaced, which can avoid unnecessary waste. It is environmentally friendly and can reduce the cost of replacement or maintenance to reduce the burden on consumers.

Although the present invention has been disclosed using the above-mentioned preferred embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make various changes and modifications to the above embodiments without departing from the spirit and scope of the present invention. The technical scope protected by the invention, so the scope of protection of the present invention shall be determined by the scope of the appended patent application.

Claims (18)

A ventilating fan includes: a main frame base, which is provided with a first rotary buckle portion, the main frame base has a flared frame and a deflector, and the flared frame and the deflector are connected and The interior is communicated, and the first turnbuckle portion is provided adjacent to the flared frame and connected to the deflector; and a fan having a fan frame and a fan wheel, the fan frame having a ring wall and provided on the ring. A base in the wall, the fan wheel is rotatably provided in the fan frame, and the fan wheel is assembled on the base and can rotate in the space surrounded by the ring wall, and the axial ends of the fan frame A second turn-locking portion is respectively provided at the two axial ends of the ring wall, and the fan frame is combined with a first turn-locking portion of the main frame base by a second turn-locking portion at one end thereof. unit. The ventilation fan according to item 1 of the scope of patent application, wherein an abutment portion is formed on the outer surface of the flared frame, and the flared frame is connected to the deflector by the abutment portion. The ventilating fan described in item 2 of the scope of patent application, further comprising a clamping ring, the clamping ring is sleeved on the outer peripheral surface of the flow guide tube, and the clamping ring has a joint portion that abuts against the flared frame. The back is opposite. The ventilating fan according to item 3 of the scope of patent application, wherein the joint of the clamping ring is a rubber or silicon gasket. The ventilating fan according to item 1 of the scope of the patent application, wherein a backflow prevention portion is formed on the inner peripheral surface of the lower half of the diversion tube, and the wall thickness of the deflection tube is adjacent to the expansion portion from the backflow prevention portion. The mouth frame is tapered outward to form an inclined shape from the inside to the outside. The ventilating fan according to item 5 of the scope of patent application, wherein the inclination angle of the backflow prevention portion is 1 to 2 degrees. The ventilating fan according to item 1 of the scope of patent application, wherein the outer back surface of the flared frame is tapered toward the deflector. The ventilating fan described in item 1 of the scope of patent application, further includes a protective cover, which is combined with the end of the diversion tube and not connected to the flared frame. The ventilating fan according to any one of claims 1 to 8 in the patent application scope, wherein the first turn-locking portion has a detachment prevention plate connected to the inner surface of the flared frame to form a rotation Groove, the anti-dropout plate is provided with at least one pair of missing grooves and at least one positioning portion communicating with the rotation groove, and each of the second rotation fastener portions has at least one rotation fastener, and the rotation fastener is provided with a positioning portion to communicate with The positioning portions of the first turn-locking portion are combined with each other. The ventilating fan according to item 9 of the scope of patent application, wherein the positioning portion of the first turning portion is a snap opening, the positioning portion of the second turning portion is an elastic piece, and the elastic piece is snapped to the position. Corresponding card opening. The ventilating fan according to item 9 of the scope of patent application, wherein the positioning portion of the first rotary buckle portion and the positioning portion of the second rotary buckle portion are respectively a lock hole, and the two lock holes are opposite to each other for a lock. The fixing element penetrates the lock. The ventilating fan as described in item 9 of the scope of patent application, wherein the number of the alignment gaps and the positioning portions are several, and the loops are arranged on the anti-detachment plate, and the number of the rotary fasteners corresponds to the alignment gaps. quantity. According to the ventilating fan described in item 9 of the scope of patent application, the filter further includes a filter, the filter is provided with a third screwing part, and the third screwing part of the filter is combined with the fan which is not connected to the flared frame. Two turn buckles. The ventilating fan described in item 13 of the scope of patent application, further includes a panel with a plurality of vents. The panel is combined with the flared frame, and the fan is located in a circle surrounded by the flared frame and the panel. In the space, the filter is located between the fan wheel and the vent of the panel. The ventilating fan according to item 13 of the scope of patent application, wherein the filter has a ring frame portion, a mesh portion is provided in the hollow portion of the ring frame portion, and the third rotary buckle portion has at least one baffle and at least one A latching member, the baffle and the latching member are connected to the inner peripheral surface of the ring frame portion, the baffle and the latching member are spaced apart in the axial direction of the ring frame portion, and one of the rotary fasteners of the fan passes through It is inserted between the baffle and the latching member, and latches the latching member. The ventilating fan according to item 15 of the scope of patent application, wherein the baffle plate and the latch are offset from each other in the axial direction of the ring frame portion. The ventilating fan according to item 16 of the scope of patent application, wherein the positioning portion of the second turn-locking portion is a keyhole, and the latching member of the third turn-locking portion is provided with a convex arc body, and the convex arc body Align the card with the keyhole. The ventilating fan according to item 9 of the scope of patent application, wherein the number of each of the second turn-fastening parts is several, and the number of the second turn-fastening parts is in the axial direction of the fan frame. Phase misalignment.