Roof fan air gathering barrel

Abstract

The invention discloses an air gathering barrel of a roof fan, which belongs to the technical field of fans, and comprises a barrel body and a drainage assembly, and the drainage assembly comprises a drainage port and an annular water blocking piece; rainwater flowing into the barrel can be drained in time through the drainage assembly, damage to the draught fan caused by accumulated water is avoided, the inner wall of the barrel can be blocked after the annular bag body expands, the rainwater is prevented from flowing backwards, the waterproof effect is enhanced through double protection, the arc-shaped flow deflectors distributed in an annular array mode are arranged on the surface of the water retaining ring, and the inner diameter of the water retaining ring can be reduced; when a plugging strip moves, a fixing piece and a water retaining ring are pushed to move, meanwhile, the inner diameter of an annular bag body is reduced under the action of the water retaining ring, the rainwater isolating effect is improved, an annular protrusion on the annular bag body is squeezed, a gap between the annular bag body and the barrel body is closed, and therefore rainwater can be prevented from flowing into the barrel body. Rainwater is prevented from flowing backwards, ventilation is not affected, and collaborative optimization of drainage and water prevention is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of fans, and in particular relates to a roof fan cone. Background Art

[0002] A roof fan is a common type of ventilation equipment. It is installed on the roof and is mainly used for ventilation. It is usually used in conjunction with a fan cone. As one of the components of the fan, the fan cone mainly plays the role of diffusing and guiding the airflow at the fan outlet. The drainage structure of existing wind chimes is mostly designed with a single drainage hole, which can only discharge a small amount of rainwater in light rain. In severe weather such as heavy rain and typhoons, rainwater will rush into the chime in large quantities by means of oblique impact, vortex entrainment, etc. The drainage speed of the existing drainage hole is much lower than the inflow speed of rainwater, resulting in a water level difference in the chime. Rainwater will seep into the fan through the connection gap between the chime and the fan, causing problems such as motor short circuit and component corrosion. In relatively severe rainy weather, the existing wind chime is difficult to drain the rainwater flowing into the chime in time, and it is difficult to avoid damage to the fan caused by accumulated water. In order to avoid the above technical problems, it is necessary to provide a roof fan conduit to overcome the above defects in the prior art. Summary of the Invention

[0003] The object of the present invention is to provide a roof fan conduit to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a roof fan conduit, comprising a cylinder body, which is arranged on one side of the roof top and connected to the air outlet of the fan; A drainage assembly is arranged in the cylinder near the air outlet; The drainage assembly includes a drainage port and an annular water blocking member, the annular water blocking member is used to isolate rainwater, and the drainage port is used to discharge water flowing into the cylinder; The annular water-blocking member includes a water-blocking ring and an annular sac. The water-blocking ring is used to initially block and divert rainwater, and the annular sac expands to seal the inner wall of the cylinder to prevent excessive backflow of rainwater. A sealing strip is slidably connected to the inner wall of the cylinder, and the sealing strip is horizontally arranged along the direction of the drain outlet to adjust the flow rate at the drain outlet.

[0005] As a preferred embodiment, the surface of the water retaining ring is provided with guide vanes distributed in a circular array along the direction of the cylinder air outlet, and the guide vanes are arranged in an arc shape for guiding and isolating rainwater.

[0006] As a preferred implementation, the inner wall of the barrel is fixedly connected with a connecting ring, the annular capsule is fixedly arranged on the surface of the connecting ring, the one end of the connecting ring is provided with an annular protrusion, the outer wall of the connecting ring is annularly provided with a plurality of connecting pieces fixedly connected with the inner wall of the barrel, and the annular protrusion part is attached to the inner wall of the barrel, thereby achieving the effect of rainwater interception.

[0007] As a preferred implementation, the one end of the annular capsule away from the annular protrusion extends to the water blocking ring, the surface of the connecting ring is fixedly connected with a connecting strip, the connecting strip is movably connected with a telescopic rod, the telescopic end of the telescopic rod is fixedly connected with a connecting head, the connecting head is movably connected with a shaped piece, and the shaped piece is fixedly connected with the outer wall of the annular capsule.

[0008] As a preferred implementation, the drainage assembly further comprises a collecting box and a floating ball, the floating ball is movably connected with a movable rod two, the one end of the movable rod two away from the movable rod one is movably connected with a horizontally arranged pushing rod, the lower surface of the barrel is fixedly connected with a connecting frame for mounting the collecting box, the bottom of the connecting frame is fixedly provided with an inflating box, and the bottom end of the collecting box is provided with a water outlet.

[0009] As a preferred implementation, the lower surface of the collecting box is fixedly connected with two limiting rods penetrating through the connecting frame and vertically sliding with the connecting frame, the outer wall of the two limiting rods is sleeved with a reset spring abutting against the connecting frame, and the outer wall of the collecting box is fixedly connected with a pressing plate extending into the inflating box.

[0010] As a preferred implementation, the lower surface of the barrel is fixedly connected with a fixing frame, the fixing frame is movably connected with a movable rod one, the one end of the movable rod one away from the fixing frame is fixedly connected with the floating ball, the movable rod one is movably connected with a movable rod two, the one end of the movable rod two away from the movable rod one is movably connected with a horizontally arranged pushing rod, the pushing rod penetrates through the drainage port and is fixedly connected with a connecting block, and the connecting block is fixedly connected with the blocking strip.

[0011] As a preferred implementation, the upper surface of the blocking strip is fixedly connected with a fixing piece, and the fixing piece is fixedly connected with the water blocking ring.

[0012] Compared with the prior art, the beneficial effects of the present application are: The drainage assembly is arranged in the barrel close to the air outlet, contains a drainage port and an annular water blocking piece, can timely drain the rainwater flowing into the barrel, avoids water accumulation from damaging the fan, accelerates the drainage of the water in the wind collecting barrel through the movement of the blocking plate, and isolates the rainwater through the annular water blocking piece, The application sets annular water blocking part, water blocking ring preliminarily blocks and guides rainwater, and the annular capsule can block the inner wall of the cylinder after expansion to prevent rainwater from flowing back, double protection enhances waterproof effect, the surface of the water blocking ring is provided with annular array distributed arc flow guiding pieces, which can reduce the inner diameter of the water blocking ring, reduce rainwater directly flowing into the cylinder, isolate part of rainwater at the air outlet, facilitate drainage, and the water blocking ring and the annular capsule cooperate to automatically form a sealing structure when rainfall exceeds drainage capacity; The application collects rainwater through the collecting box, when rainfall is too large to exceed drainage capacity, the floating ball rises, drives the blocking strip to move horizontally when the floating ball rises, expands the drainage opening, accelerates the drainage speed of rainwater in the cylinder, the blocking strip moves to push the fixed sheet and the water blocking ring to move, the annular capsule reduces the inner diameter under the action of the water blocking ring to improve rainwater isolation effect, extrudes the annular protrusion on the annular capsule to close the gap between the annular capsule and the cylinder to prevent rainwater from flowing back, and does not affect ventilation, realizes the cooperation and optimization of drainage and waterproof, dynamically matches the flow of the drainage opening and rainfall through the floating ball and the connecting rod mechanism, and solves the defect of fixed drainage capacity of the traditional wind scooper. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a schematic diagram of the three-dimensional structure of the application Figure 1 ; Figure 2 is a schematic diagram of the front view structure of the application Figure 3 is a schematic diagram of the three-dimensional structure of the application Figure 2 ; Figure 4 is a schematic diagram of the cross-sectional structure of the application Figure 5 is a schematic diagram of the annular capsule structure of the application Figure 6 is a schematic diagram of the water blocking ring structure of the application Figure 7 is a schematic diagram of the A enlarged structure of the application Figure 1 ; Figure 8 is a schematic diagram of the B enlarged structure of the application Figure 4 ; Figure 9 is a schematic diagram of the floating ball structure of the application

[0014] In the figure: 1, cylinder; 2, water blocking ring; 3, annular capsule; 4, connecting frame; 5, collecting box; 6, drainage opening; 7, flow guiding piece; 8, inflation box; 9, connecting ring; 10, connecting sheet; 11, telescopic rod; 12, fixed sheet; 13, blocking strip; 14, connecting block; 15, connecting strip; 16, connecting head; 17, shaping sheet; 18, floating ball; 19, movable rod one; 20, movable rod two; 21, pushing rod; 22, fixed frame; 23, limiting rod; 24, spring. DETAILED DESCRIPTION

[0015] The application will be further described in conjunction with the examples.

[0016] The following examples are used to illustrate the present application, but cannot be used to limit the protection scope of the present application. The conditions in the examples can be further adjusted according to specific conditions, and simple improvements to the method of the present application under the concept of the present application all belong to the scope of protection of the present application.

[0017] Referring to Figures 1-9 , the present application provides a roof fan wind collecting barrel, comprising: A barrel body 1 is arranged on one side of the roof top and connected with the fan air outlet; A drainage assembly is arranged in the barrel body 1 close to the air outlet thereof; The drainage assembly comprises a drainage port 6 and an annular water blocking member, the annular water blocking member is used for isolating rainwater, and the drainage port 6 is used for discharging water flowing into the barrel body 1; The annular water blocking member comprises a water blocking ring 2 and an annular capsule 3, the water blocking ring 2 is used for preliminarily blocking and guiding the rainwater, and the annular capsule 3 is inflated to block the inner wall of the barrel body 1 to prevent excessive rainwater from flowing back.

[0018] A blocking strip 13 is slidably connected to the inner wall of the barrel body 1 and is arranged horizontally along the direction of the drainage port 6.

[0019] As shown in Figure 4 and Figure 5 , the surface of the water blocking ring 2 is provided with annularly arrayed flow guiding fins 7 along the direction of the air outlet of the barrel body 1, which are used for guiding and isolating the rainwater; The flow guiding fins 7 are arranged in an arc shape as a whole and are made of high-strength polyvinyl chloride material, the gap between adjacent flow guiding fins 7 is 5-8 mm, which not only can effectively block the oblique rainwater, but also can guide the airflow to flow smoothly through the flow guiding fins 7 by the principle of aerodynamics, reduce the wind resistance coefficient to below 0.3, and reduce the energy consumption of the fan operation; The length of the flow guiding fins 7 can be adjusted according to actual conditions, the rainwater dripping into the water blocking ring 2 is preliminarily shielded along a specific path, the inner diameter of the water blocking ring 2 is reduced by the arrangement of the flow guiding fins 7, the rainwater directly passing through the water blocking ring 2 and flowing into the barrel body 1 is reduced, the rainwater can be prevented from directly moving to the deep part of the barrel body 1 in relatively severe weather conditions, part of the rainwater is isolated at the air outlet, and is convenient for discharging; As shown in Figure 4 、 Figure 5 and Figure 8As shown, the inner wall of the barrel 1 is fixedly connected with the connecting ring 9, the annular capsule 3 is fixedly arranged on the surface of the connecting ring 9, the one end of the annular capsule 3 abutting the connecting ring 9 is provided with an annular protrusion, the annular protrusion cooperates with the water retaining ring 2, when the water retaining ring 2 abuts the annular capsule 3, the abutting of the water retaining ring 2 and the annular capsule 3 can make the annular protrusion part of the annular capsule 3 fully abut the inner wall of the barrel 1, under the action of the annular capsule 3, the effect of closing and intercepting is achieved, and the rainwater can continue to flow into the barrel 1 only when the rainwater continuously accumulates to overflow the through hole in the center of the annular capsule 3. The outer wall of the connecting ring 9 is annularly provided with a plurality of connecting pieces 10 fixedly connected with the inner wall of the barrel 1, the connecting pieces 10 are arranged at intervals, and the interval arrangement of the connecting pieces 10 makes a gap between the connecting ring 9 and the inner wall of the barrel 1, so that the residual rainwater can be easily discharged from the barrel 1.

[0020] As shown in the figure, Figure 2 The one end of the annular capsule 3 away from the annular protrusion extends to the one end of the water retaining ring 2, the surface of the connecting ring 9 is fixedly connected with the connecting strip 15, the connecting strip 15 movably connects the telescopic rod 11, the telescopic end of the telescopic rod 11 is fixedly connected with the connecting head 16, the connecting head 16 movably connects the shaped piece 17, the shaped piece 17 is fixedly connected with the surface of the annular capsule 3, which can preliminarily shape the annular capsule 3, preventing the annular capsule 3 from being difficult to shape when it is in a contracted state. The telescopic rod 11 is provided with elastic components such as springs, which can keep the annular capsule 3 to be tapered at the one end of the water retaining ring 2, and can play the role of guiding and shielding in the telescopic state, when the annular capsule 3 is extruded and compressed, the diameter of the central through hole is reduced to half of the initial state, improving the effect of the annular capsule 3 in isolating rainwater.

[0021] As shown in the figure, Figure 9 The drainage assembly further comprises a collecting box 5 and a floating ball 18, the floating ball 18 movably connects the movable rod two 20, the one end of the movable rod two 20 away from the movable rod one 19 movably connects the horizontally arranged pushing rod 21, the pushing rod 21 is used to push the water retaining ring 2 to abut the annular capsule 3, the lower surface of the barrel 1 is fixedly connected with the connecting frame 4 for installing the collecting box 5, the bottom of the connecting frame 4 is fixedly installed with the inflating box 8, the bottom end of the collecting box 5 is provided with a water outlet, when the weather is bad and the rainfall is large, the rainwater flowing into the collecting box 5 through the drainage port 6 exceeds the drainage capacity of the collecting box 5, and the rainwater accumulates in the collecting box 5, so that the floating ball 18 can float up, the floating ball 18 pushes the water retaining ring 2 to abut the annular capsule 3, the water retaining ring 2 extrudes the annular protrusion of the annular capsule 3, which can close the gap between the annular capsule 3 and the barrel 1, preventing the rainwater from backflowing when the rainfall is too large, preventing the rainwater from continuously backflowing without affecting ventilation.

[0022] The lower surface of the collecting box 5 is fixedly connected with two limiting rods 23 penetrating the connecting frame 4 and vertically sliding with the connecting frame 4, the outer wall of the two limiting rods 23 is sleeved with a reset spring 24 abutting against the connecting frame 4, one side of the outer wall of the collecting box 5 is fixedly connected with a pressing plate extending into the inflation box 8, the collecting box 5 moves downward under the gravity and overcomes the elastic force of the reset spring 24, the pressing plate pushes the piston rod located in the inflation box 8 and communicates with the annular capsule 3 through the pipeline, so that the air in the inflation box 8 is pushed into the annular capsule 3, so that the inflation box 8 can be inflated, the annular capsule 3 is inflated and adheres to the inner wall of the cylinder body 1, preventing rainwater from continuously flowing into the cylinder body 1. When the rain intensity decreases, the water level in the collecting box 5 decreases, the reset spring 24 pushes the collecting box 5 to reset, the inflation box 5 stops inflating, the annular capsule 3 exhausts and shrinks, and the sealing strip 13 returns to the initial position under the gravity of the floating ball 18.

[0023] As shown in Figure 4 and Figure 7 , the lower surface of the cylinder body 1 is fixedly connected with a fixed frame 22, the fixed frame 22 is movably connected with a movable rod one 19, one end of the movable rod one 19 away from the fixed frame 22 is fixedly connected with the floating ball 18, the movable rod one 19 is movably connected with a movable rod two 20, one end of the movable rod two 20 away from the movable rod one 19 is movably connected with a pushing rod 21 arranged horizontally, the pushing rod 21 penetrates the drain 6 and is fixedly connected with a connecting block 14, the connecting block 14 is fixedly connected with the sealing strip 13. When the floating ball 18 floats up, the pushing rod 21 and the connecting block 14 are pushed by the movable rod two 20 and move in the horizontal direction, the sealing strip 13 fixedly connected with the connecting block 14 moves, which can expand the opening of the drain 6, thereby accelerating the drainage of rainwater in the cylinder body 1.

[0024] As shown in Figure 4 and Figure 7 , the upper surface of the sealing strip 13 is fixedly connected with a fixed sheet 12, the fixed sheet 12 is fixedly connected with the water retaining ring 2, the cylinder body 1 is provided with a guide rod for horizontally guiding the water retaining ring 2, so as to ensure that the water retaining ring 2 is stably guided in the horizontal direction, when the sealing strip 13 moves, the fixed sheet 12 and the water retaining ring 2 can be pushed to move in the cylinder body 1, the water retaining ring 2 moves towards the annular capsule 3 and adheres to the annular capsule 3 to seal the gap between the connecting ring 9 and the cylinder body 1, under the action of the water retaining ring 2, the annular capsule 3 away from one end of the annular protrusion approaches the center of the connecting ring 9, which can reduce the inner diameter of the annular capsule 3 and improve the rainwater isolation effect of the annular capsule 3.

[0025] Example two Further, the bottom of the connecting frame 4 is provided with a plug rod corresponding to the water outlet at the bottom of the collecting box 5, when the collecting box 5 moves in the vertical direction, the plug rod is inserted into the water outlet at the bottom of the collecting box 5, the flow of the water outlet at the bottom of the collecting box 5 can be limited, the plug rod is a tapered structure, when the collecting box 5 descends, the plug rod is inserted into the water outlet, the flow of the water outlet can be reduced; When the water level drops, the collecting box 5 automatically rises under the action of the reset spring, the plug rod is pulled out, the flow is automatically restored, the floating ball 18 can keep an effective triggering state during rainfall, the floating ball 18 keeps floating before the rainfall stops, so that the corresponding annular capsule 3 can always isolate the cylinder 1; The guide plate is arranged on the outer wall of the cylinder 1, so that the rainwater falling on the outer wall of the cylinder 1 flows into the collecting box 5 along the cylinder 1, when the drain hole 6 in the cylinder 1 is blocked, the annular capsule 3 and the blocking strip 13 can be triggered to realize the drainage of the rainwater in the cylinder 1.

[0026] The working principle and use process of the application are as follows: The application drains water through the water drainage assembly, the annular water blocking part is used for isolating rainwater, and the water drainage hole 6 is used for draining water flowing into the cylinder 1; In light rain, a small amount of rainwater falls on the water retaining ring 2, is guided to the water drainage hole 6 through the guide fin 7, directly flows into the collecting box 5 and is discharged through the bottom water outlet, at this time, the floating ball 18 is in the initial position, the blocking strip 13 keeps partially shielding the water drainage hole 6, and the annular capsule 3 is in the contracted state, so that the ventilation effect is not affected. When encountering severe weather, rainwater flows into the cylinder 1 through the air outlet, the water drainage hole 6 is used for draining water flowing into the cylinder 1, the water retaining ring 2 cooperates with the guide fin 7 and is used for preliminarily guiding and isolating rainwater, guiding liquid to flow out along a specific path, preliminarily shielding rainwater falling in the water retaining ring 2, reducing the inner diameter of the water retaining ring 2 through the arrangement of the guide fin 7, reducing rainwater flowing into the cylinder 1 directly through the water retaining ring 2, and preventing rainwater from directly moving to the deep part of the cylinder 1 in severe weather conditions; When the rainfall is relatively large and exceeds the drainage speed of the collecting box 5, rainwater accumulates in the collecting box 5, so that the floating ball 18 is floated, the blocking strip 13 is moved by the floating of the floating ball 18, the blocking strip 13 moves away from the air outlet of the cylinder 1, the flow at the water drainage hole 6 can be adjusted, and the drainage of the water drainage hole 6 to the rainwater in the cylinder 1 is accelerated; When the blocking strip 13 moves, the water retaining ring 2 moves towards the annular capsule 3 and is attached to the annular capsule 3, the water retaining ring 2 extrudes the annular protrusion on the annular capsule 3, the annular capsule 3 is extruded to tightly attach the annular protrusion to the inner wall of the cylinder 1, and a first waterproof barrier is formed; At the same time, the collecting box 5 moves downward due to the gravity of the accumulated water and compresses the reset spring 24, the side wall pressing plate of the collecting box 8 extrudes the piston rod in the inflatable box 8, the piston rod pushes the piston to move, and air is injected into the annular capsule 3 through the hose to make it expand; At this time, the gap between the annular capsule 3 and the cylinder 1 is closed, further enhancing the sealing effect, preventing rainwater from flowing back when the rainfall is too large, preventing rainwater from continuously flowing back without affecting ventilation, and reducing the rainwater erosion failure rate of the roof fan through efficient drainage and waterproofing.

[0027] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A roof fan conduit, characterized by: include: The cylinder (1) is arranged on one side of the roof top and connected to the air outlet of the fan; A drainage assembly is arranged inside the cylinder (1) near the air outlet; The drainage assembly comprises a drainage port (6) and an annular water-blocking member, the annular water-blocking member is used to isolate rainwater, and the drainage port (6) is used to discharge water flowing into the cylinder (1); The annular water-blocking member comprises a water-blocking ring (2) and an annular sac (3); the water-blocking ring (2) is used to initially block and divert rainwater; the annular sac (3) expands to seal the inner wall of the cylinder (1) to prevent excessive backflow of rainwater; The inner wall of the cylinder (1) is slidably connected to a blocking strip (13), which is arranged horizontally along the direction of the drain outlet (6) and is used to adjust the flow rate at the drain outlet (6).

2. The roof fan conduit according to claim 1, characterized in that: The surface of the water retaining ring (2) is provided with guide vanes (7) distributed in a ring array along the direction of the air outlet of the cylinder (1); the guide vanes (7) are arranged in an arc shape and are used to guide and isolate rainwater.

3. The roof fan conduit according to claim 1, characterized in that: The inner wall of the cylinder (1) is fixedly connected to the connecting ring (9), the annular capsule (3) is fixedly arranged on the surface of the connecting ring (9), one end of the annular capsule (3) that is in contact with the connecting ring (9) is provided with an annular protrusion, and the outer wall of the connecting ring (9) is provided with a plurality of connecting pieces (10) that are fixedly connected to the inner wall of the cylinder (1), and the annular protrusion is in contact with the inner wall of the cylinder (1), which has the function of sealing and intercepting rainwater.

4. The roof fan conduit according to claim 3, characterized in that: One end of the annular sac (3) away from the annular protrusion extends toward the water retaining ring (2); a connecting strip (15) is fixedly connected to the surface of the connecting ring (9); the connecting strip (15) is movably connected to a telescopic rod (11); the telescopic end of the telescopic rod (11) is fixedly connected to a connecting head (16); the connecting head (16) is movably connected to a shaping piece (17); and the shaping piece (17) is fixedly connected to the outer wall of the annular sac (3).

5. The roof fan conduit according to claim 3, characterized in that: The drainage assembly further comprises a collection box (5) and a float (18), wherein the float (18) is movably connected to a second movable rod (20), and an end of the second movable rod (20) away from the first movable rod (19) is movably connected to a horizontally arranged push rod (21), and a connecting frame (4) for mounting the collection box (5) is fixedly connected to the lower surface of the cylinder (1), and an air-filling box (8) is fixedly mounted on one side of the bottom of the connecting frame (4), and a water outlet is provided at the bottom end of the collection box (5).

6. The roof fan conduit according to claim 5, characterized in that: The lower surface of the collection box (5) is fixedly connected to two limit rods (23) that pass through the connecting frame (4) and slide vertically with the connecting frame (4); the outer walls of the two limit rods (23) are sleeved with return springs (24) that resist the connecting frame (4); and one side of the outer wall of the collection box (5) is fixedly connected to a pressure plate that extends into the inflation box (8).

7. The roof fan conduit according to claim 6, characterized in that: The lower surface of the cylinder (1) is fixedly connected to a fixing frame (22), and the fixing frame (22) is movably connected to a movable rod (19). The end of the movable rod (19) away from the fixing frame (22) is fixedly connected to the float (18), and the movable rod (19) is movably connected to a movable rod (20). The end of the movable rod (20) away from the movable rod (19) is movably connected to a horizontally arranged push rod (21). The push rod (21) passes through the drain outlet (6) and is fixedly connected to a connecting block (14). The connecting block (14) is fixedly connected to the blocking strip (13).

8. The roof fan conduit according to claim 5, characterized in that: A fixing plate (12) is fixedly connected to the upper surface of the blocking strip (13), and the fixing plate (12) is fixedly connected to the water retaining ring (2).

Images