Building indoor ventilation device

Abstract

The utility model relates to an indoor ventilation device for a building. According to the technical scheme, first fixing lugs are arranged on the left side and the right side of the inner side wall of an outer pipe in a circumferential array mode respectively, second fixing lugs are arranged on the edge of the inner side wall of the right end of the outer pipe in a circumferential array mode, L-shaped clamping jaws are movably inserted into the first fixing lugs corresponding to the left side and the right side, gears are fixedly sleeved with the right ends of the L-shaped clamping jaws, and torsional springs are fixedly sleeved with the clamping jaw walls on the left sides of the gears; the left ends of the torsion springs are fixedly connected with the corresponding first fixing lugs, the right ends of the torsion springs are inserted into the corresponding clamping jaw walls, the gears are meshed with teeth of an inner gear ring, the inner gear ring is movably arranged on the right end face of an outer pipe, an air guide pipe is inserted into the outer pipe, and third fixing lugs are arranged at the positions, corresponding to the second fixing lugs, of the outer side wall of the air guide pipe. A fan is fixedly installed on the inner side wall of the air guide pipe, and an air filter element is installed in the air guide pipe on the right side of the fan. The beneficial effects of the utility model are that: it is convenient to carry out fast fixed installation through the L-shaped clamping jaw and the fastening ring, and the convenience and safety of installation are improved.

Description

Technical Field

[0001] The utility model belongs to the field of indoor ventilation devices and relates to an indoor ventilation device for a building. Background Art

[0002] The duct fan is a type of indoor ventilation device. When installing this type of ventilation device, you need to drill a hole in the wall and insert the duct fan into the installation hole. At the same time, the installer needs to insert the duct fan into both sides of the wall for internal and external fixation to ensure stability after installation. When performing external fixation, for high-rise installations, workers are required to climb through the window to the outside of the wall, which poses a greater risk of installation.

[0003] Therefore, the utility model provides a building indoor ventilation device to solve the above problems. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model discloses an indoor ventilation device for a building, and the technical scheme adopted is as follows: the device comprises an outer tube, first fixing ears are arranged in a circumferential array on the left and right sides of the inner wall of the outer tube, second fixing ears are arranged in a circumferential array on the edge of the inner wall at the right end of the outer tube, L-shaped clamps are movably inserted into the left and right corresponding first fixing ears, a set gear is fixed on the right end of the L-shaped clamp, a set torsion spring is fixed on the clamp wall on the left side of the gear, the left end of the torsion spring is fixedly connected with the corresponding first fixing ear, the right end of the torsion spring is inserted into the corresponding clamp wall, the gear is respectively meshed with the teeth of the inner gear ring, the inner gear ring is movably arranged on the right end face of the outer tube, an air duct is inserted into the outer tube, third fixing ears are arranged on the outer side wall of the air duct corresponding to the second fixing ears, fourth fixing ears are arranged in a circumferential array on the middle part of the inner wall of the air duct, the fourth fixing ear is fixedly connected with the edge of a fan, and an air filter element is installed in the air duct on the right side of the fan.

[0005] As a preferred solution of the utility model, a sealing ring is further provided between the left end face of the outer tube and the left end face of the air duct, the sealing ring is fixedly connected to the inner wall of the outer tube, and the L-shaped clamps respectively pass through the sealing rings; by adopting the sealing ring, external dust is prevented from entering between the outer tube and the air duct.

[0006] As a preferred solution of the utility model, a thread is provided on the right outer side wall of the outer tube, a fastening ring is screwed onto the thread, a sealing ring cover is screwed onto the right side thread of the fastening ring, and the folded edge of the center hole of the sealing ring cover is inserted into the right end of the air duct; by tightening the fastening ring and cooperating with the P-type clamp, the device can be quickly fixed in the mounting hole of the wall.

[0007] As a preferred solution of the utility model, the left end of the L-shaped clamp is bent vertically to the right, and a rubber pad is fixedly installed on its end face. By using a rubber belt, the friction between the L-shaped clamp and the outer wall is increased, and at the same time, the noise generated by vibration is reduced when the fan rotates.

[0008] As a preferred solution of the utility model, a circumferential array of protrusions is arranged on the right end face of the inner gear ring; by rotating the protrusions, the inner gear ring is easily rotated, thereby driving the gear and the L-shaped clamp to rotate simultaneously through the inner gear ring, and the left end bending portion of the L-shaped clamp is rotated to the circumference of the left end face of the outer tube, so that the device can be smoothly inserted into the mounting hole of the wall for installation and fixation.

[0009] As a preferred solution of the utility model, a limiting piece is provided on the outer arc surface of the third fixing ear; by adopting the limiting piece, it is convenient to limit the inner gear ring.

[0010] The beneficial effects of the utility model are as follows: by rotating the inner gear ring, the gear and the corresponding L-shaped clamp are driven to rotate, so that the left end bent portion of the L-shaped clamp is rotated to the circumference of the left end face of the outer tube, which is convenient for quickly inserting the device into the mounting hole of the wall. After the left end of the outer tube passes through the mounting hole of the wall, the protrusion on the inner gear ring is loosened, and under the action of the torsion spring, the L-shaped clamp is driven to rotate in the opposite direction and reset, so that the bent portion at the left end of the L-shaped clamp is stuck on the outside of the wall, and then the fastening ring on the inside of the wall is tightened. With the cooperation of the fastening ring and the L-shaped clamp, the device can be quickly installed in the mounting hole of the wall, thereby avoiding the risk of the installer needing to climb out of the window for high-altitude installation during high-rise installation, thereby improving the convenience of installation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 It is a cross-sectional view of the overall structure of the utility model;

[0013] Figure 3 It is an internal cross-sectional view of the outer tube of the utility model;

[0014] Figure 4 This is a schematic diagram of the assembly of the L-shaped clamping jaw of the utility model;

[0015] Figure 5 This is a schematic diagram of the internal gear ring assembly of the utility model;

[0016] Figure 6 It is an internal cross-sectional view of the air duct of the utility model.

[0017] In the figure: 1-outer tube, 2-L-shaped clamping jaw, 3-inner gear ring, 4-air duct, 5-fan, 6-air filter element, 11-first fixing ear, 12-second fixing ear, 13-sealing ring, 14-thread, 15-fastening ring, 16-sealing ring cover, 21-gear, 22-torsion spring, 23-rubber pad, 31-bump, 41-third fixing ear, 411-limiting plate, 42-fourth fixing ear. DETAILED DESCRIPTION

[0018] Example 1

[0019] like Figures 1 to 6 As shown, the utility model discloses a building indoor ventilation device, the technical scheme adopted is, comprising an outer tube 1, the left and right sides of the inner wall of the outer tube 1 are respectively provided with first fixing ears 11 in a circumferential array, the right end inner wall edge of the outer tube 1 is provided with second fixing ears 12 in a circumferential array, a sealing ring 13 is further provided between the left end face of the outer tube 1 and the left end face of the air duct 4, the sealing ring 13 is fixedly connected to the inner wall of the outer tube 1, the L-shaped clamping jaws 2 respectively penetrate the sealing ring 13, the right side outer wall of the outer tube 1 is provided with a thread 14, a fastening ring 15 is screwed on the thread 14, a sealing ring cover 16 is screwed on the right side thread of the fastening ring 15, the folded edge of the center hole of the sealing ring cover 16 is inserted into the right end of the air duct 4, the L-shaped clamping jaws 2 are movably inserted into the first fixing ears 11 corresponding to the left and right sides, the right end of the L-shaped clamping jaw 2 is fixed with a set gear 21, the gear 2 A torsion spring 22 is fixedly mounted on the clamping jaw wall on the left side of 1, the left end of the torsion spring 22 is fixedly connected to the corresponding first fixing ear 11, and the right end of the torsion spring 22 is inserted into the corresponding clamping jaw wall. The left end of the L-shaped clamping jaw 2 is vertically bent to the right, and a rubber pad 23 is fixedly installed on its end face. The gear 21 is respectively engaged with the teeth of the inner gear ring 3, and a convex block 31 is arranged in a circumferential array on the right end face of the inner gear ring 3. The inner gear ring 3 is movably arranged on the right end face of the outer tube 1. An air duct 4 is inserted into the outer tube 1, and a third fixing ear 41 is respectively arranged at a position of the outer side wall of the air duct 4 corresponding to the second fixing ear 12, and a limit plate 411 is arranged on the outer arc surface of the third fixing ear 41. A fourth fixing ear 42 is arranged in a circumferential array at the middle part of the inner side wall of the air duct 4, and the fourth fixing ear 42 is fixedly connected to the edge of the fan 5. An air filter element 6 is installed in the air duct on the right side of the fan 5.

[0020] The working principle of the utility model is as follows: when in use, by rotating the protrusion 31 on the inner gear ring 3, the gear 21 and the corresponding L-shaped clamping jaw 2 are driven to rotate, so that the bent portion at the left end of the L-shaped clamping jaw 2 is rotated to the circumference of the left end face of the outer tube 1. At this time, the device is quickly inserted into the mounting hole of the wall through the outer tube 1. After the left end of the outer tube 1 passes through the mounting hole of the wall, the protrusion 31 on the inner gear ring 3 is loosened, and under the action of the torsion spring 22, the L-shaped clamping jaw 2 is driven to rotate in the opposite direction and reset, so that the bent portion at the left end of the L-shaped clamping jaw 2 is stuck on the outside of the wall, and then the fastening ring 15 on the inner side of the wall is tightened, and finally the sealing ring 16 is screwed on, and the rapid installation of the device can be quickly completed.

[0021] The electrical connection methods or structures not described in detail herein are prior art.

[0022] Although the specific embodiments of the present invention are described in detail above, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the field without departing from the purpose of the present invention, and modifications or deformations without creative labor are still within the scope of protection of the present invention.

Claims

1. A building indoor ventilation device, characterized in that: The invention comprises an outer tube (1), wherein first fixing ears (11) are arranged in a circumferential array on the left and right sides of the inner wall of the outer tube (1), and second fixing ears (12) are arranged in a circumferential array on the inner wall edge of the right end of the outer tube (1), and L-shaped clamping claws (2) are movably inserted into the first fixing ears (11) on the left and right sides, and a gear (21) is fixedly mounted on the right end of the L-shaped clamping claw (2), and a torsion spring (22) is fixedly mounted on the clamping claw wall on the left side of the gear (21), and the left end of the torsion spring (22) is fixedly connected to the corresponding first fixing ear (11), and the right end of the torsion spring (22) is inserted into the corresponding The gear (21) is in the wall of the clamping jaw, the gear (21) is respectively meshed with the teeth of the inner gear ring (3), the inner gear ring (3) is movably arranged on the right end surface of the outer tube (1), an air duct (4) is inserted into the outer tube (1), third fixing ears (41) are respectively arranged at the positions of the outer side wall of the air duct (4) corresponding to the second fixing ears (12), fourth fixing ears (42) are arranged in a circumferential array at the middle position of the inner side wall of the air duct (4), the fourth fixing ears (42) are fixedly connected to the edge of the fan (5), and an air filter element (6) is installed in the air duct on the right side of the fan (5).

2. A building indoor ventilation device according to claim 1, characterized in that: A sealing ring (13) is also provided between the left end surface of the outer tube (1) and the left end surface of the air guide tube (4); the sealing ring (13) is fixedly connected to the inner side wall of the outer tube (1), and the L-shaped clamping claws (2) respectively penetrate the sealing ring (13).

3. A building indoor ventilation device according to claim 1, characterized in that: The right side outer wall of the outer tube (1) is provided with a thread (14), a fastening ring (15) is screwed onto the thread (14), a sealing ring cover (16) is screwed onto the right side thread of the fastening ring (15), and the folded edge of the center hole of the sealing ring cover (16) is inserted into the right end of the air guide tube (4).

4. A building indoor ventilation device according to claim 1, characterized in that: The left end of the L-shaped clamping jaw (2) is bent vertically to the right, and a rubber pad (23) is fixedly mounted on the end surface thereof.

5. A building indoor ventilation device according to claim 1, characterized in that: The right end surface of the inner gear ring (3) is provided with convex blocks (31) in a circumferential array.

6. A building indoor ventilation device according to claim 1, characterized in that: A limiting piece (411) is provided on the outer curved surface of the third fixing ear (41).

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