Ventilation fan

Abstract

The utility model belongs to the technical field of ventilating fans, and discloses a ventilating fan. The ventilator comprises a box body and an annular enclosure frame, the box body is provided with an inner cavity, an air inlet and an air outlet, the air inlet and the air outlet are communicated with the inner cavity, the inner cavity is used for containing a fan, and the annular enclosure frame can be connected to the periphery of the box body in a relatively sliding and sleeving mode in the axis direction of the ventilator, so that the annular enclosure frame and the box body are arranged to be in a storage state and an unfolding state; the ventilation fan has a thickness in the axial direction, the thickness of the ventilation fan in the unfolded state is larger than that of the ventilation fan in the folded state, the annular enclosure frame and the box body are converted into the folded state when the ventilation fan is transported, the thickness of the ventilation fan is reduced, and the logistics transportation cost and the packaging cost are saved. When the annular enclosure frame and the box body are converted into the unfolded state, the thickness of the ventilating fan is increased, so that the distance between the air inlet of the box body and a ceiling or a wall is increased, the ventilating space of the box body is increased, and the excellent ventilating efficiency and ventilating performance of the ventilating fan are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of ventilation fan technology, and in particular to a ventilation fan. Background Technology

[0002] Bathroom exhaust fans are essential household items. Currently, the enclosures of bathroom exhaust fans are mainly made of one-piece plastic or one-piece metal. However, one-piece enclosures have drawbacks such as large size and weight, which makes installation very inconvenient and logistics transportation costs high.

[0003] Therefore, it is necessary to design a ventilation fan to solve the problems existing in the current technology. Utility Model Content

[0004] The purpose of this utility model is to provide a ventilation fan that saves on logistics and packaging costs and improves installation convenience.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] An exhaust fan includes a housing and an annular frame. The housing has an inner cavity, an air inlet and an exhaust outlet communicating with the inner cavity, and the inner cavity is used to accommodate a fan. The annular frame is slidably fitted onto the outer periphery of the housing along the axial direction of the exhaust fan, such that the annular frame and the housing are configured to have a retracted state and an extended state. The exhaust fan has a thickness along the axial direction, and the thickness of the exhaust fan in the extended state is greater than the thickness of the exhaust fan in the retracted state.

[0007] Preferably, the annular frame has a first mating part and the housing has a second mating part. In the unfolded state, the first mating part and the second mating part are engaged to restrict the sliding of the annular frame relative to the housing along the axial direction of the ventilation fan.

[0008] Preferably, the first mating part is a snap-fit ​​structure, and the second mating part is a bent part that bends outward from the opening edge of the box body. In the unfolded state, the snap-fit ​​structure engages with the bent part.

[0009] Preferably, the buckle structure includes a lip and a hook-shaped spring. The opening edge of the annular frame is bent inward to form the lip. The lip is slidably attached to the box body. The hook-shaped spring is provided on the side wall of the annular frame. In the unfolded state, the bent part is engaged between the lip and the hook-shaped spring.

[0010] Preferably, the inner wall of the hook-shaped spring has an inclined surface that is inclined toward the air inlet. When the annular frame moves from the retracted state to the unfolded state, the bent part can abut against the inclined surface, and the hook-shaped spring is guided to elastically deform through the inclined surface until the bent part is engaged between the lip and the hook-shaped spring.

[0011] Preferably, the open end of the annular frame is provided with a stop structure, which abuts against the box body when the box is in the stored state.

[0012] Preferably, the abutment structure is a protrusion that protrudes inward from the inner sidewall of the annular frame.

[0013] Preferably, the bent portion is provided with a notch, which is configured to cooperate with the stop structure. When the annular frame slides relative to the box to the storage state, the stop structure can couple and limit the position with the notch.

[0014] Preferably, the annular frame includes a frame body and a brim. The frame body is provided with the buckle structure, and the brim is provided with a waist-shaped hole. The waist-shaped hole is used to cooperate with a connector to fix the annular frame to the installation object.

[0015] Preferably, the housing is provided with a cable inlet and a cable inlet stop block located on one side of the cable inlet, the cable inlet is connected to the inner cavity of the housing, and the cable inlet stop block is provided with a first cable clamping groove;

[0016] The ventilation fan also includes an inlet fixing block and a fixing member. The inlet fixing block is provided with a second wire-locking groove. The fixing member is used to detachably fix the inlet stop block to the inlet fixing block. When the inlet fixing block is connected to the inlet stop block, the first wire-locking groove and the second wire-locking groove can be engaged to form an inlet slot for limiting and locking the power cord.

[0017] The beneficial effects of this utility model are:

[0018] This utility model provides a ventilation fan that, during transportation, can be transformed from an unfolded state to a retracted state between the ring-shaped frame and the housing. In this retracted state, the fan's thickness is reduced, saving on logistics and packaging costs. Furthermore, due to its small size, it can be easily installed on ceilings or walls in bathrooms, kitchens, and other similar locations. After installation, switching from the retracted to the unfolded state increases the fan's thickness, thereby increasing the distance between the air inlet and the ceiling or wall, thus expanding the ventilation space and ensuring excellent ventilation efficiency and performance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the extended annular frame provided in this embodiment of the present invention;

[0020] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0021] Figure 3 This is an enlarged view of a portion of the structure of the annular frame after it has retracted, as provided in this embodiment of the utility model.

[0022] Figure 4 This is a top view of the ventilation fan provided in this embodiment of the utility model;

[0023] Figure 5 It is along Figure 4 Sectional view of BB;

[0024] Figure 6 yes Figure 5 A magnified view of a section at point C;

[0025] Figure 7 This is a schematic diagram of the structure of the annular frame provided in this embodiment of the utility model;

[0026] Figure 8 This is a partial enlarged view of the structure of the box provided in this embodiment of the utility model.

[0027] In the picture:

[0028] 1. Housing; 11. Inner cavity; 111. Reinforcing rib; 112. Second snap-fit ​​structure; 12. Air inlet; 13. Exhaust outlet; 14. Bend; 141. Notch; 15. Cable inlet; 16. Cable inlet stop; 161. First cable clamping groove;

[0029] 2. Circular frame; 201. Frame body; 202. Brim; 21. Stopping structure; 22. Buckle structure; 221. Lip edge; 222. Hook-shaped spring; 2221. Inclined surface; 223. Waist-shaped hole; 2231. First waist-shaped hole; 2232. Second waist-shaped hole;

[0030] 3. Fan;

[0031] 4. Cable inlet fixing block; 41. Second cable clamping groove;

[0032] 5. Sensors. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not the entire structure.

[0034] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0037] The technical solution provided by this utility model will be described below with reference to the accompanying drawings and specific embodiments.

[0038] Combination Figures 1 to 8As shown, this embodiment provides a ventilation fan for use in bathrooms, kitchens, and other environments requiring ventilation. It maintains indoor air circulation, reduces dampness, and prevents mold growth by expelling moisture and odors from the air. The ventilation fan mainly includes a housing 1 and an annular frame 2. The housing 1 has an inner cavity 11, an air inlet 12 communicating with the inner cavity 11, and an exhaust outlet 13. The inner cavity 11 accommodates a fan 3. Under the action of the fan 3, indoor air is sequentially exhausted through the air inlet 12 and the exhaust outlet 13, thereby achieving the purpose of maintaining fresh and clean indoor air. The annular frame 2 is fitted around the outer periphery of the housing 1 and runs along the axial direction of the ventilation fan (see reference). Figure 1 The ring frame 2 (shown by the dashed line M) is slidably connected to the housing 1, allowing it to move to both a stowed and an unfolded state. In the unfolded state, the ring frame 2 slides outward from the outer side of the housing 1 along the axis of the ventilation fan. In the stowed state, the ring frame 2 fits onto the outer side of the housing 1, ensuring that the thickness of the ventilation fan in the unfolded state is greater than that in the stowed state, thus forming a telescopic folding structure between the housing 1 and the ring frame 2. It is understood that the ventilation fan has thickness along its axial direction. In one specific embodiment, the fan 3 is an axial flow fan, and the axial direction of the ventilation fan is defined by the motor shaft of the axial flow fan.

[0039] Through the above-described configuration, the ventilation fan can be transported by changing from an unfolded state to a retracted state between the annular frame 2 and the housing 1. This reduces the thickness of the ventilation fan, decreasing its overall volume and saving on logistics and packaging costs. Furthermore, due to its small size, it can be easily installed on ceilings or walls in bathrooms, kitchens, and other similar locations. In this embodiment, the annular frame 2 serves as the structure for fixing the ventilation fan to the ceiling or wall. The annular frame 2 is slid outwards from the outer side of the housing 1 along the axis of the ventilation fan and is in an unfolded position before being fixed to the ceiling or wall. This increases the distance between the air inlet 12 of the housing 1 and the ceiling or wall, increasing the thickness of the ventilation fan and thus expanding the ventilation space of the housing 1. This, in turn, ensures excellent ventilation efficiency and performance. Furthermore, in this embodiment, the inner cavity 11 of the box body 1 is also provided with a reinforcing rib 111. By providing the reinforcing rib 111, the overall structural strength of the box body can be improved, and the box body 1 can be prevented from deforming and causing the tightness of the fit with the annular frame 2 to fail.

[0040] In this embodiment, combined with Figure 2 , Figure 3As shown, the open end of the annular frame 2 is provided with a stop structure 21. When the annular frame 2 and the housing 1 are in the retracted state, the stop structure 21 can abut against the housing 1, thereby limiting the retraction distance of the housing 1 and preventing the housing 1 from retracting too far and falling off the annular frame 2. Moreover, through the stop structure 21, the housing 1 can abut against the annular frame 2 after retraction. During subsequent installation, the user can extend the annular frame 2 by directly pulling the housing 1, thereby reducing the difficulty of operation and facilitating the installation of the ventilation fan.

[0041] Preferably, the abutment structure 21 is a protrusion that protrudes inward from the inner sidewall of the annular frame 2, thereby simplifying the structure of the abutment structure 21 and making it easier to manufacture.

[0042] In one or more embodiments, the annular frame 2 has a first mating part, and the housing 1 has a second mating part. In the unfolded state, the first mating part and the second mating part are engaged to restrict the sliding of the annular frame 2 relative to the housing 1 along the axial direction of the ventilation fan. Specifically, in conjunction with... Figure 5 , Figure 6 As shown, the first mating part is a snap-fit ​​structure 22 provided on the annular frame 2, and the second mating part is a bent part 14 that bends outward from the opening edge of the housing 1. The snap-fit ​​structure 22 can engage with the bent part 14 when the annular frame 2 and the housing 1 are in the unfolded state, thus keeping the annular frame 2 and the housing 1 relatively fixed. This prevents the annular frame 2 from shaking during use, thereby improving the reliability of the ventilation fan. In other embodiments different from the illustration, the first mating part may also be a protrusion structure extending from the inner circumference of the annular frame 2, while the second mating part may be a groove formed on the housing 1.

[0043] More specifically, see reference Figure 6 As shown, in this embodiment, the bottom opening of the box 1 is set as an air inlet 12, and the side opening is set as an exhaust port 13; the buckle structure 22 includes a lip 221 and a hook-shaped spring piece 222, the opening edge of the annular frame 2 protrudes inward to form a lip 221, the lip 221 can slide to fit against the outer side wall of the box 1, and the side wall of the annular frame 2 is provided with a hook-shaped spring piece 222. When the annular frame 2 is pulled along the axis of the ventilation fan, the frame 2 and the housing 1 are transformed into an unfolded state. During this process, the bent part 14 on the housing 1 can push the hook-shaped spring piece 222 outward. The hook-shaped spring piece 222 undergoes elastic deformation. After the bent part 14 moves and abuts against the lip 221, the bent part 14 can eliminate the pushing force on the hook-shaped spring piece 222, allowing the hook-shaped spring piece 222 to return to its initial state. At this time, the bent part 14 can be engaged between the lip 221 and the hook-shaped spring piece 222, thereby realizing the snap-fit ​​connection between the snap-fit ​​structure 22 and the bent part 14.

[0044] Furthermore, in this embodiment, the inner wall of the hook-shaped spring 222 also has an inclined surface 2221 that slopes towards the air inlet 12. When the annular frame 2 moves from the retracted state to the unfolded state, the bent portion 14 can abut against the inclined surface 2221. The inclined surface 2221 guides the hook-shaped spring 222 to elastically deform, so that the bent portion 14 can more smoothly push the hook-shaped spring 222 outward until the bent portion 14 is engaged between the lip 221 and the hook-shaped spring 222. The above configuration can eliminate the feeling of obstruction between the bent portion 14 and the hook-shaped spring 222 during movement.

[0045] Preferably, in this embodiment, the reference Figure 7 As shown, both the annular frame 2 and the housing 1 have square horizontal cross-sectional shapes, and two lips 221 are provided on each side of the annular frame 2, so that eight lips 221 are provided at intervals around the annular frame 2. By increasing the number of lips 221, the connection between the annular frame 2 and the housing 1 can be further strengthened, ensuring that the annular frame 2 can provide uniform support for the housing 1 at any angle and direction, ensuring that the ventilation fan maintains stable performance during long-term use and extending its service life.

[0046] It should be further noted that, in this embodiment, in combination with Figure 3 , Figure 5 As shown, a notch 141 is provided on the bent part 14. The notch 141 is configured to cooperate with the abutment structure 21. When the annular frame 2 slides relative to the box body to the storage state, the abutment structure 21 can couple and limit the position with the notch 141, thereby effectively preventing the box body 1 from being exposed from the opening end of the annular frame 2 after it retracts. This ensures the compactness and aesthetics of the overall structure and is also beneficial to the protection of the annular frame 2 during the transportation of the ventilation fan, preventing the annular frame 2 from being scratched, bumped, or even damaged.

[0047] Optionally, combined Figure 2 , Figure 3 as well as Figure 6 As shown, the vertical cross-section of the annular frame 2 is L-shaped, including a frame body 201 and a brim 202. The frame body 201 is provided with the aforementioned lip 221 and spring clip 222. The aforementioned stop structure 21 is provided at the junction of the brim 202 and the frame body 201. A waist-shaped hole 223 is provided on the brim 202. This waist-shaped hole is used to cooperate with a connector to fix the annular frame 2 to the installation object (i.e., ceiling or wall), thus achieving a fixed connection between the annular frame 2 and the ceiling or wall. This connection is convenient to install and disassemble, and reliably secure, ensuring that the ventilation fan will not loosen due to vibration during use, further improving the stability and safety of the overall structure. Furthermore, the design of the waist-shaped hole 223 allows for adjustment of the ventilation fan's installation angle and position, adapting to different installation environments and meeting the personalized needs of users.

[0048] For example, in this embodiment, the connector is a threaded component such as a bolt or screw, so that the connector can thread the annular frame 2 to the fixed surface through the waist-shaped hole 223, thereby ensuring the reliability of the connection.

[0049] Specifically, the waist-shaped hole 223 includes a first waist-shaped hole 2231 extending along the X-axis direction and a second waist-shaped hole 2232 extending along the Y-axis direction, so that the ventilation fan can be finely adjusted in the X-axis and Y-axis directions to ensure that the ventilation fan fits tightly against the ceiling or wall after installation.

[0050] refer to Figure 8 As shown, the top of the housing 1 provided in this embodiment is provided with a cable inlet 15 and a cable inlet block 16 located on one side of the cable inlet 15. The cable inlet 15 is connected to the inner cavity 11 of the housing 1 and is used to introduce the power cord into the housing 1 to realize the electrical connection between the power cord and components such as the fan 3. The cable inlet block 16 is provided with a first cable-locking groove 161. In addition, the ventilation fan also includes a cable-locking block 4 and a fixing member. The cable-locking block 4 is provided with a second cable-locking groove 41, and the fixing member is used to detachably fix the cable inlet block 16 to the cable-locking block 4. In specific use, when the cable-locking block 4 and the cable inlet block 16 are fixedly connected by the fixing member, the first cable-locking groove 161 and the second cable-locking groove 41 can be engaged to form a cable-locking slot. The cable-locking slot can limit and lock the power cord to prevent the power cord from being placed messily on the housing 1, affecting aesthetics and safety, and also helps in the installation and use of the ventilation fan.

[0051] Optionally, the ventilation fan provided in this embodiment also includes a lampshade (not shown in the figure) covering the air inlet 12. The lampshade contains a lighting device. The design of the lampshade not only enhances the aesthetics of the ventilation fan but also provides soft lighting for the room, meeting the lighting needs of users when using the ventilation fan and enhancing its practicality and user experience. It should be noted that in other parallel embodiments, the integrated panel inside the lampshade can also integrate LED lights and a speaker module. The speaker module can guide users in using the ventilation fan through voice prompts, further enriching the usage effect of the ventilation fan and meeting the needs of most users in the market, thus facilitating its promotion and popularization.

[0052] It should be further explained that, in this embodiment, the lampshade is provided with a first snap-fit ​​structure, and the inner cavity of the housing is provided with a second snap-fit ​​structure 112. The lampshade and the housing are snapped into the second snap-fit ​​structure 112 through the first snap-fit ​​structure to achieve a detachable fixed connection. Through the second snap-fit ​​structure 112 and the first snap-fit ​​structure, the lampshade and the housing 1 can be spaced apart so that the gap between the lampshade and the housing 1 can form the air inlet 12 mentioned above, thereby realizing the circulation and replacement of air.

[0053] Optionally, the ventilation fan provided in this embodiment also includes a sensor 5 installed in the inner cavity 11. When indoor air pollution exceeds the standard, the sensor 5 detects the exceeding signal and transmits it to the control integrated panel located in the inner cavity 11. After receiving the signal, the control integrated panel instructs the fan 3 to work and discharge indoor air to the outside through the air inlet 12, the housing 1 and the exhaust port 13, thereby achieving the purpose of exhausting polluted air from the room. It has a higher degree of intelligence, is more convenient to use and has a stronger user experience.

[0054] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0055] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A ventilating fan, characterized in that It includes a housing (1) and an annular frame (2). The housing (1) has an inner cavity (11), an air inlet (12) and an exhaust outlet (13) communicating with the inner cavity (11). The inner cavity (11) is used to accommodate a fan (3). The annular frame (2) is slidably fitted onto the outer periphery of the box (1) along the axial direction of the ventilation fan, so that the annular frame (2) and the box (1) are configured to have a stored state and an unfolded state. The ventilation fan has a thickness along the axial direction, and the thickness of the ventilation fan in the unfolded state is greater than the thickness of the ventilation fan in the stored state.

2. The ventilation fan according to claim 1, characterized in that The annular frame (2) has a first mating part, and the box (1) has a second mating part. In the unfolded state, the first mating part and the second mating part are connected to each other to restrict the sliding of the annular frame (2) relative to the box (1) along the axial direction of the ventilation fan.

3. The ventilating fan of claim 2, wherein, The first mating part is a snap-fit ​​structure (22), and the second mating part is a bent part (14) that bends outward from the opening edge of the box (1). In the unfolded state, the snap-fit ​​structure (22) and the bent part (14) are engaged.

4. The ventilation fan according to claim 3, characterized in that, The buckle structure (22) includes a lip (221) and a hook-shaped spring (222). The opening edge of the annular frame (2) is bent inward to form the lip (221). The lip (221) is slidably attached to the box body (1). The hook-shaped spring (222) is provided on the side wall of the annular frame (2). In the unfolded state, the bent part (14) is engaged between the lip (221) and the hook-shaped spring (222).

5. The ventilating fan of claim 4, wherein, The inner wall of the hook-shaped spring (222) has an inclined surface (2221) that is inclined toward the air inlet (12). When the annular frame (2) moves from the retracted state to the unfolded state, the bent part (14) can abut against the inclined surface (2221). The hook-shaped spring (222) is guided to deform elastically through the inclined surface (2221) until the bent part (14) is engaged between the lip (221) and the hook-shaped spring (222).

6. The ventilation fan of claim 4, wherein, The opening end of the annular frame (2) is provided with a stop structure (21), and in the stored state, the stop structure (21) abuts against the box body (1).

7. A ventilating fan according to claim 6, characterised in that The stop structure (21) is a protrusion that protrudes inward from the inner sidewall of the annular frame (2).

8. The ventilating fan of claim 7, wherein, The bent portion (14) is provided with a notch (141), which is configured to cooperate with the stop structure (21). When the annular frame (2) slides relative to the box (1) to the storage state, the stop structure (21) can be coupled and limited with the notch (141).

9. The ventilation fan according to claim 3, characterized in that, The annular frame (2) includes a frame body (201) and a brim (202). The frame body (201) is provided with the buckle structure (22), and the brim (202) is provided with a waist-shaped hole (223). The waist-shaped hole (223) is used to cooperate with the connector to fix the annular frame (2) to the installation object.

10. The ventilation fan according to any one of claims 1-9, characterized in that, The housing (1) is provided with a cable inlet (15) and a cable inlet block (16) located on one side of the cable inlet (15). The cable inlet (15) is connected to the inner cavity (11) of the housing (1). The cable inlet block (16) is provided with a first cable clamping groove (161). The ventilation fan also includes an inlet fixing block (4) and a fixing member. The inlet fixing block (4) is provided with a second wire-locking groove (41). The fixing member is used to detachably fix the inlet stop block (16) to the inlet fixing block (4). When the inlet fixing block (4) is connected to the inlet stop block (16), the first wire-locking groove (161) and the second wire-locking groove (41) can be engaged to form an inlet slot for limiting and locking the power cord.

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