Pre-embedded ventilation fan

Abstract

The utility model relates to a pre -buried ventilation fan, including pre -buried spare and with pre -buried spare plug -in mounting base, pre -buried spare includes with wall body outer wall fixed connection's connecting ring department and set up in wall body inside for with mounting base connection's assembly department, the assembly department hollowly is provided with with mounting base adaptation's assembly cavity, mounting base is inserted in assembly cavity, the mounting base includes with pre -buried spare link's shell and base, the base sets up in shell and is integrated with shell through the connecting rib, the base is provided with the ventilation passage between shell inner wall, the base opposite connecting ring department's another end is provided with fan blade subassembly and is used for driving fan blade subassembly's drive motor. Through adopting above -mentioned technical scheme, convenient and fast assembly, high efficiency, simple structure, convenient assembly, set up in wall body not exposed, do not occupy space, greatly promoted the overallity and the aesthetic degree of space.

Description

Technical Field

[0001] This utility model belongs to the field of air conditioning technology, and in particular relates to a pre-embedded ventilation fan. Background Technology

[0002] Exhaust fans are used to replace stale indoor air. Specifically, the fan blades rotate, thereby driving the stale indoor air to the outside, thus improving the comfort of the indoor environment. Exhaust fans can be used in various places such as kitchens, bathrooms, offices, and conference rooms.

[0003] Bathrooms often use exhaust fans that connect directly to the outside. Installation requires pre-drilling holes in the exterior wall structure. These holes consist of two parts: ① a 160mm diameter ventilation hole; ② a recessed niche on the outer side of the exterior wall with internal dimensions of 250mm × 250mm × 50mm, the specific dimensions of which are determined by the design drawings. The exhaust fan is installed on the inner side, and aluminum alloy louvers are installed on the outer side. Traditional construction methods include: ① No pre-embedding during structural construction; after structural completion, round holes are drilled using a water drill, and the square opening in the exterior wall is shaped using a cutting machine and electric pick; ② PVC sleeves are pre-embedded during structural construction, and the square opening in the exterior wall is shaped using a cutting machine and electric pick; ③ PVC sleeves are pre-embedded during structural construction, and the square opening in the exterior wall is formed by nailing a wooden box onto an aluminum formwork and casting it in one go. Traditional construction methods all suffer from poor aesthetic quality, large amounts of subsequent chiseling and repair work, and high costs. Furthermore, existing exhaust fan structures are simple, generally consisting of a square hollow frame with fan blades and a motor driving the blades installed inside. After the exhaust fan is installed on the wall, the fan blades and other structures are clearly exposed, which damages the integrity and appearance of the wall. Utility Model Content

[0004] In summary, to overcome the shortcomings of the prior art, this utility model provides a pre-embedded ventilation fan.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pre-embedded ventilation fan, comprising a pre-embedded component and a mounting base inserted into the pre-embedded component. The pre-embedded component includes a connecting ring portion fixedly connected to the outer wall of the wall and an assembly portion disposed within the wall for connection with the mounting base. The assembly portion is hollow and has an assembly cavity adapted to the mounting base. The mounting base is inserted into the assembly cavity. The mounting base includes a shell and a base connected to the pre-embedded component. The base is disposed within the shell and integrally formed with the shell through connecting ribs. A ventilation channel is provided between the base and the inner wall of the shell. A fan blade assembly and a drive motor for driving the fan blade assembly are provided at the other end of the base opposite to the connecting ring portion.

[0006] By adopting the above technical solution, the assembly part of the embedded part is inserted into the wall, and the connecting ring part is on the outer wall (flush with the wall surface). Then, the embedded part is fixed to the wall with cement (cement is not the only way to fix it; other connection methods can also be used, this is just an example). The mounting base is inserted from the connecting ring part into the assembly cavity in the assembly part and is plugged and fixed to the embedded part. This method is convenient and quick to assemble, highly efficient, simple in structure, and easy to assemble. At the same time, the exhaust fan is set inside the wall and is not exposed, which does not occupy space and greatly improves the overall integrity and aesthetics of the space. Especially for rooms with low ceilings (such as bathrooms, kitchens, and corridors), it can effectively avoid the feeling of oppression and make the space appear more open and light. The fan blade assembly and drive motor are both set inside the base (after assembling the fan blade assembly and drive motor with the mounting base, they are inserted into the embedded part). The first wall provides protection, and the second fan blade is built in and not easily seen from the outside, making it more aesthetically pleasing.

[0007] The present invention further comprises: the assembly part including a first ring part, a limiting ring part and a second ring part, the first ring part being disposed at one end of the limiting ring part corresponding to the connecting ring part, the second ring part being disposed at the other end of the limiting ring part relative to the first ring part and the inner diameter of the second ring part being smaller than that of the first ring part; the outer shell including an inner end part disposed within the second ring part, an outer end part disposed within the first ring part and a transition part for connecting the inner end part and the outer end part, the transition part abutting against the inner wall of the limiting ring part; one end of the first ring part corresponding to the connecting ring part being provided with a limiting card part for preventing the mounting base from detaching from the embedded part, the limiting card part being provided with a guide slope for inserting the mounting base.

[0008] By adopting the above technical solution, when the mounting base is inserted into the assembly cavity, the inner end is first inserted into the first ring and then into the second ring. During the insertion process, the transition part abuts against the inner wall of the limiting ring, indicating that the mounting base is inserted in place. When the transition part abuts against the inner wall of the limiting ring, the limiting card and the limiting ring respectively limit the two ends of the outer end of the outer shell, further enhancing the stability of the connection between the outer shell of the mounting base and the assembly part of the embedded part. The limiting card is provided with a guide slope for the mounting base to be inserted. Since the inner diameter of the second ring is smaller than that of the first ring, the resistance is small when the inner end is inserted into the first ring. When the inner end is inserted into the second ring, the outer end is inserted into the first ring (the outer diameter of the outer end is larger than that of the inner end). The guide slope makes the assembly more labor-saving.

[0009] The present invention further includes: a baffle plate is provided at one end of the base corresponding to the connecting ring, the baffle plate and the base are detachably connected by a connecting component, and an airflow channel communicating with the ventilation channel is provided between the baffle plate and the connecting ring.

[0010] By adopting the above technical solution, the baffle covers the entire base, and from the appearance, only the airflow channel is visible on the wall, which further enhances the concealment of the ventilation fan and improves the integrity and aesthetics of the wall; it ensures that the airflow passes through the airflow channel for ventilation, guides the exhaust airflow more smoothly, reduces turbulence and disturbance at the air outlet, and improves ventilation efficiency; it blocks most of the dust, and the baffle is detachable, making it easy to disassemble, replace, clean, and maintain.

[0011] The present invention further comprises: a bottom cover is provided between the baffle and the base; a connecting post is provided at one end of the base corresponding to the bottom cover; a connecting hole adapted to the fastener is provided in the connecting post; an installation part is provided at the position of the bottom cover corresponding to the connecting post; an installation cavity is provided at one end of the installation part facing the connecting assembly; a connecting through hole is provided at one end of the installation cavity corresponding to the connecting post for the fastener to pass through; and the fastener passes through the connecting through hole and connects to the connecting post.

[0012] By adopting the above technical solution, a bottom cover shield base is set (with the wiring terminals set between the bottom cover and the base), which has the functions of waterproofing and dustproofing, improving protection. At the same time, the bottom cover and the base are connected by fasteners passing through the connecting through holes and connecting columns, which makes assembly convenient. Meanwhile, the mounting cavity is used to install nuts. The connecting through holes and the mounting cavity are coaxially set. Using nuts with screws does not affect the connection of fasteners between the bottom cover and the base, and further provides a protective shielding function.

[0013] The present invention further comprises: the connecting assembly includes two nuts and a double-ended screw; the baffle is provided with a mounting groove for installing and fixing the nuts at one end of the connecting assembly; one nut is interference-fitted with the mounting cavity and the other is interference-fitted with the mounting groove; and the two ends of the double-ended screw are threadedly connected to the two nuts respectively.

[0014] By adopting the above technical solution, the nut is inserted into the mounting groove of the baffle with an interference fit. After one end of the double-ended screw is assembled with the nut in the mounting cavity of the bottom cover, the baffle is screwed into place by the nut and the other end of the double-ended screw. The connection is more stable, the assembly is convenient, and the efficiency is high. There is no connection between the baffle and the connecting ring. It is only connected to the bottom cover through the connecting component on the back, which avoids affecting the gas flow, improves the ventilation efficiency, and has a good noise reduction effect.

[0015] The present invention further comprises: the base including a base plate and a peripheral wall; the bottom cover covering the base plate and forming a protective cavity with the bottom cover; the base plate having a through hole for the power supply line to pass through; one side of the peripheral wall having an outlet for limiting the wire; the outlet having a wire groove; the wire groove having an opening at one end corresponding to the bottom cover; the bottom cover having an outlet on one side corresponding to the wire groove; the outer shell having an outlet hole at the position corresponding to the wire groove; and an outlet gap for the power supply line to enter and exit between the outer shell and the assembly part.

[0016] By adopting the above technical solution, one end of the wire is connected to the drive, and the other end passes through the wire through hole into the protective cavity. Then, it enters the wire groove through the wire outlet, and then connects to the outside through the wire outlet hole, the wire outlet gap between the outer shell and the assembly part. This helps to restrict and regulate the wire, while preventing the wire from getting tangled with the fan blade, thus providing protection.

[0017] The present invention further includes: a protective cover is provided on the outer side of the bottom cover at the position corresponding to the cable outlet, the protective cover is mounted above the cable outlet, and the protective cover is provided with an opening at one end corresponding to the cable groove.

[0018] By adopting the above technical solution, the protection of the wires is further enhanced. At the same time, aligning the protective cover with the wire channel makes it easy to quickly locate the direction of the wire outlet and facilitates rapid assembly.

[0019] The present invention further comprises: the drive motor including a motor body, a connecting part connected to the base, and a drive shaft for connecting the fan blade assembly; the base and the connecting seat are detachably connected by fasteners; and the base is provided with assembly holes for installing fasteners.

[0020] By adopting the above technical solution, the base and drive motor can be easily and quickly connected through fasteners and assembly holes.

[0021] The present invention further comprises: the fan blade assembly including a drive housing with an opening at one end, the drive housing being disposed opposite to the base, the motor body being disposed between the drive housing and the base, a connecting seat connected to the drive shaft being disposed inside the drive housing, and a plurality of external air guide vanes being uniformly disposed on the outer wall of the drive housing.

[0022] By adopting the above technical solution, the drive shaft drives the connecting seat to rotate, thereby driving the drive housing to rotate. The outer air guide is set between the drive housing and the outer shell and rotates with the drive housing. The outer shell protects the drive housing. At the same time, the airflow generated by the outer air guide is connected to the ventilation channel. The ventilation channel is stable and the ventilation efficiency is high.

[0023] The present invention further includes: multiple inner fan blades are evenly arranged around the connecting seat on the inner wall of the drive housing, and a heat dissipation channel is formed between the drive housing and the base at intervals.

[0024] By adopting the above technical solution, the drive motor drives the drive housing to rotate. The inner fan blades utilize the kinetic energy of the motor's own rotation to directly generate high-speed airflow, which, in conjunction with the heat dissipation channel, significantly improves heat dissipation efficiency, reduces motor operating temperature, and prevents the motor from triggering thermal protection shutdown due to overheating. Good heat dissipation helps maintain motor efficiency and output stability, and extends the overall lifespan of the motor. The inner fan blades provide the most space-saving heat dissipation solution.

[0025] The specific embodiments of this utility model are described below with reference to the accompanying drawings and examples. Attached Figure Description

[0026] Figure 1 This is an exploded view of an embodiment of the present utility model.

[0027] Figure 2 This is a partial cross-sectional view of an embodiment of the present utility model. Figure 1 .

[0028] Figure 3 This is a partial cross-sectional view of an embodiment of the present utility model. Figure 2 .

[0029] Figure 4 for Figure 3 Enlarged view of part A.

[0030] Figure 5 This is an exploded view of an embodiment of the present utility model.

[0031] Reference numerals: 1. Embedded part, 11. Connecting ring, 12. Assembly part, 121. First ring, 122. Limiting ring, 123. Second ring, 124. Limiting clip, 1241. Guide slope, 2. Mounting base, 21. Outer shell, 211. Inner end, 212. Outer end, 213. Transition part, 214. Cable outlet hole, 22. Base, 221. Connecting column, 222. Base plate, 2221. Through hole for wiring, 223. Peripheral wall, 224. Cable outlet, 2241. Cable groove, 225. Assembly hole, 23. 24. Connecting rib, 25. Ventilation channel, 3. Outlet gap, 3. Fan blade assembly, 31. Drive housing, 32. Connecting seat, 33. Outer air guide, 34. Inner fan blade, 35. Heat dissipation channel, 4. Drive motor, 41. Motor body, 42. Connecting part, 43. Drive shaft, 5. Baffle, 51. Mounting groove, 6. Connecting assembly, 61. Nut, 62. Double-ended screw, 7. Airflow channel, 8. Bottom cover, 81. Mounting part, 811. Mounting cavity, 812. Connecting through hole, 82. Outlet, 83. Protective cover, 9. Wall. Detailed Implementation

[0032] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0033] See appendix Figure 1-5This embodiment discloses a pre-embedded ventilation fan, including a pre-embedded part 1 and a mounting base 2 inserted into the pre-embedded part 1. The pre-embedded part 1 includes a connecting ring part 11 fixedly connected to the outer wall of a wall 9 and an assembly part 12 disposed in the wall 9 for connection with the mounting base 2. The assembly part 12 is hollow and has an assembly cavity adapted to the mounting base 2. The mounting base 2 is inserted into the assembly cavity. The mounting base 2 includes a shell 21 connected to the pre-embedded part 1 and a base 22. The base 22 is disposed in the shell 21 and integrally formed with the shell 21 through a connecting rib 23. An ventilation channel 24 is provided between the base 22 and the inner wall of the shell 21. At the other end of the base 22 opposite to the connecting ring part 11, a fan blade assembly 3 and a drive motor 4 for driving the fan blade assembly 3 are provided.

[0034] This embodiment further includes the following configuration: the assembly part 12 includes a first ring part 121, a limiting ring part 122, and a second ring part 123. The first ring part 121 is disposed at one end of the limiting ring part 122 corresponding to the connecting ring part 11. The second ring part 123 is disposed at the other end of the limiting ring part 122 opposite to the first ring part 121, and the inner diameter of the second ring part 123 is smaller than that of the first ring part 121. The outer shell 21 includes an inner end part 211 disposed in the second ring part 123, an outer end part 212 disposed in the first ring part 121, and a transition part 213 for connecting the inner end part 211 and the outer end part 212. The transition part 213 abuts against the inner wall of the limiting ring part 122. One end of the first ring part 121 corresponding to the connecting ring part 11 is provided with a limiting card part 124 for preventing the mounting base 2 from detaching from the embedded part 1. The limiting card part 124 is provided with a guide slope 1241 for inserting the mounting base 2.

[0035] In this utility model technical solution, the ring is preferably circular, but not limited to circular, but refers to various shapes with hollow structure. The description of the ring is only for ease of understanding and not to limit the shape. The ring can take many shapes, such as outer square and inner circle, outer square and inner square, outer triangle and inner circle, outer triangle and inner square, etc. The shape of the outer shell 21 is adapted to the assembly cavity.

[0036] In this embodiment, a baffle 5 is provided at one end of the base 22 corresponding to the connecting ring 11. The baffle 5 and the base 22 are detachably connected by a connecting component 6. An airflow channel 7 communicating with the ventilation channel 24 is provided between the baffle 5 and the connecting ring 11.

[0037] This embodiment further includes the following: a bottom cover 8 is provided between the baffle 5 and the base 22; a connecting post 221 is provided at one end of the base 22 corresponding to the bottom cover 8; a connecting hole adapted to a fastener is provided in the connecting post 221; an installation part 81 is provided at the position of the bottom cover 8 corresponding to the connecting post; an installation cavity 811 is provided at one end of the installation part 81 facing the connecting assembly 6; a connecting through hole 812 for the fastener to pass through is provided at one end of the installation cavity 811 corresponding to the connecting post 221; and the fastener passes through the connecting through hole 812 and connects to the connecting post 221.

[0038] In this embodiment, the connecting component 6 is further configured to include two nuts 61 and a double-ended screw 62. The baffle 5 is provided with a mounting groove 51 for mounting and fixing the nuts 61 at one end of the connecting component 6. One nut 61 is interference-fitted with the mounting cavity 811, and the other is interference-fitted with the mounting groove 51. The two ends of the double-ended screw 62 are threadedly connected to the two nuts 61 respectively.

[0039] This embodiment further includes the following configuration: the base 22 includes a base plate 222 and a peripheral wall 223; the bottom cover 8 is mounted on the base plate 222 and forms a protective cavity with the base plate 222; the base plate 222 has a through hole 2221 for the power supply line to pass through; one side of the peripheral wall 223 has a wire outlet 224 for limiting the wire; the wire outlet 224 has a wire groove 2241; the wire groove 2241 has an opening at one end corresponding to the bottom cover 8; the bottom cover 8 has a wire outlet 82 on one side corresponding to the wire groove 2241; the outer shell 21 has a wire outlet hole 214 at the position corresponding to the wire groove 2241; and a wire outlet gap 25 for the power supply line to enter and exit is provided between the outer shell 21 and the assembly part 12.

[0040] In this embodiment, a protective cover 83 is provided on the outer side of the bottom cover 8 at the position corresponding to the outlet 82. The protective cover 83 is mounted above the outlet 224, and the protective cover 83 is provided with an opening at one end corresponding to the wire groove 2241.

[0041] This embodiment further includes the following configuration: the drive motor 4 includes a motor body 41, a connecting part 42 connected to the base 22, and a drive shaft 43 for connecting to the fan blade assembly 3. The base 22 and the connecting seat 32 are detachably connected by fasteners. The base 22 is provided with an assembly hole 225 for installing fasteners.

[0042] In this embodiment, the fan blade assembly 3 is further configured as follows: the fan blade assembly 3 includes a drive housing 31 with an opening at one end, the drive housing 31 is disposed opposite to the base 22, the motor body 41 is disposed between the drive housing 31 and the base 22, the drive housing 31 is provided with a connecting seat 32 connected to the drive shaft 43, and a plurality of external air guide vanes 33 are uniformly disposed on the outer wall of the drive housing 31.

[0043] In this embodiment, a plurality of inner fan blades 34 are evenly arranged around the connecting seat 32 on the inner wall of the drive housing 31, and a heat dissipation channel 35 is formed between the drive housing 31 and the base 22 at intervals.

[0044] The "between" mentioned above does not only refer to the location or position, but also to the interaction between different parts.

[0045] Although this paper extensively uses embedded parts 1, connecting ring 11, assembly part 12, first ring 121, limiting ring 122, second ring 123, limiting clip 124, guide slope 1241, mounting base 2, outer shell 21, inner end 211, outer end 212, transition part 213, cable outlet hole 214, base 22, connecting column 221, bottom plate 222, wiring through hole 2221, peripheral wall 223, cable outlet 224, wire groove 2241, assembly hole 225, and connecting rib 23. The terms used include ventilation channel 24, cable outlet gap 25, fan blade assembly 3, drive housing 31, connecting seat 32, outer air guide 33, inner fan blade 34, heat dissipation channel 35, drive motor 4, motor body 41, connecting part 42, drive shaft 43, baffle 5, mounting groove 51, connecting assembly 6, nut 61, double-ended screw 62, airflow channel 7, bottom cover 8, mounting part 81, mounting cavity 811, connecting through hole 812, cable outlet 82, and protective cover 83, etc., but the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A pre-embedded ventilation fan, characterized in that: The device includes an embedded part and a mounting base that is inserted into the embedded part. The embedded part includes a connecting ring portion that is fixedly connected to the outer wall of the wall and an assembly portion disposed inside the wall for connection with the mounting base. The assembly portion is hollow and has an assembly cavity adapted to the mounting base. The mounting base is inserted into the assembly cavity. The mounting base includes a shell and a base connected to the embedded part. The base is disposed inside the shell and integrally formed with the shell through connecting ribs. A ventilation channel is provided between the base and the inner wall of the shell. A fan blade assembly and a drive motor for driving the fan blade assembly are provided at the other end of the base opposite to the connecting ring portion.

2. The pre-embedded ventilation fan according to claim 1, characterized in that: The assembly part includes a first ring, a limiting ring, and a second ring. The first ring is disposed at one end of the limiting ring corresponding to the connecting ring. The second ring is disposed at the other end of the limiting ring opposite to the first ring, and the inner diameter of the second ring is smaller than that of the first ring. The outer shell includes an inner end disposed in the second ring, an outer end disposed in the first ring, and a transition portion for connecting the inner end and the outer end. The transition portion abuts against the inner wall of the limiting ring. One end of the first ring corresponding to the connecting ring is provided with a limiting clip to prevent the mounting base from detaching from the embedded part. The limiting clip is provided with a guide slope for the mounting base to be inserted.

3. The embedded ventilation fan according to claim 1, characterized in that: A baffle is provided at one end of the base corresponding to the connecting ring. The baffle is detachably connected to the base through a connecting assembly. An airflow channel communicating with the ventilation channel is provided between the baffle and the connecting ring.

4. A pre-embedded ventilation fan according to claim 3, characterized in that: A bottom cover is provided between the baffle and the base. A connecting post is provided at one end of the base corresponding to the bottom cover. A connecting hole adapted to the fastener is provided in the connecting post. An installation part is provided at the position of the bottom cover corresponding to the connecting post. An installation cavity is provided at the end of the installation part facing the connecting assembly. A connecting through hole is provided at the end of the installation cavity corresponding to the connecting post for the fastener to pass through. The fastener passes through the connecting through hole and connects to the connecting post.

5. A pre-embedded ventilation fan according to claim 4, characterized in that: The connecting assembly includes two nuts and a double-ended screw. The baffle is provided with a mounting groove for installing and fixing the nuts at one end of the connecting assembly. One nut is interference-fitted with the mounting cavity, and the other is interference-fitted with the mounting groove. The two ends of the double-ended screw are threaded to the two nuts respectively.

6. A pre-embedded ventilation fan according to claim 4, characterized in that: The base includes a base plate and a peripheral wall. The bottom cover is placed on the base plate and forms a protective cavity with the bottom cover. The base plate is provided with a through hole for the power supply line to pass through. One side of the peripheral wall is provided with a wire outlet for limiting the wire. The wire outlet is provided with a wire groove. The wire groove is provided with an opening at one end corresponding to the bottom cover. The bottom cover is provided with a wire outlet on one side corresponding to the wire groove. The outer shell is provided with a wire outlet hole at the position corresponding to the wire groove. A wire outlet gap is provided between the outer shell and the assembly part for the power supply line to enter and exit.

7. A pre-embedded ventilation fan according to claim 6, characterized in that: A protective cover is provided on the outer side of the bottom cover at the position corresponding to the cable outlet. The protective cover is mounted above the cable outlet and has an opening at one end corresponding to the cable groove.

8. A pre-embedded ventilation fan according to claim 1, characterized in that: The drive motor includes a motor body, a connecting part connected to the base, and a drive shaft for connecting to the fan blade assembly. The base and the connecting part are detachably connected by fasteners, and the base is provided with assembly holes for installing fasteners.

9. A pre-embedded ventilation fan according to claim 8, characterized in that: The fan blade assembly includes a drive housing with an opening at one end, the drive housing being disposed opposite to the base, the motor body being disposed between the drive housing and the base, a connecting seat connected to the drive shaft being disposed inside the drive housing, and a plurality of external air guide vanes being evenly disposed on the outer wall of the drive housing.

10. A pre-embedded ventilation fan according to claim 9, characterized in that: Multiple inner fan blades are evenly arranged around the connecting seat on the inner wall of the drive housing, and heat dissipation channels are formed between the drive housing and the base at intervals.

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