Fresh air system exhaust fan

Abstract

The utility model discloses an exhaust fan of a fresh air system, which relates to the technical field of exhaust fans and comprises a sealing mechanism, a main body mechanism is arranged on the side face of the sealing mechanism, a connecting mechanism is arranged on the side face of the main body mechanism, the sealing mechanism comprises a sealing shell, and a telescopic groove is formed in the side face of the sealing shell. A first limiting groove is formed in the top end of the side face of the telescopic groove, a cable hole is formed in the top face of the sealing shell, and a first mounting clamping block is fixedly connected to the top end of the side face of the sealing shell. Infinite extension of the device can be achieved through cooperation of the multiple sealing mechanisms, the main body mechanism and the connecting mechanism so as to adapt to ventilation work in different environments, the sealing mechanisms are arranged at the two ends of the device to achieve the sealing effect, foreign matter is prevented from falling into the device, and internal damage is avoided; the telescopic groove can provide a foundation for installation of the main body mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust fans, and particularly relates to an exhaust fan for a fresh air system. Background Art

[0002] An exhaust fan is a type of air conditioning electrical appliance that drives air flow by an electric motor to rotate the fan blades, enabling the exchange of indoor and outdoor air, also known as a ventilation fan. The purpose of exhausting air is to remove the polluted air indoors, regulate temperature and humidity, and it is widely used in families and public places. The exhaust fan is also called a negative pressure fan, a negative pressure blower, etc. By using air convection, the indoor environment can be kept in a negative pressure state, forming a suction force that continuously sucks in outdoor air and discharges the stuffy indoor air, thereby achieving the effects of ventilation and cooling.

[0003] Existing exhaust fans are all integral devices, unable to adjust the height according to actual usage requirements and not suitable for relatively narrow gaps. Therefore, an exhaust fan for a fresh air system that can adjust the height according to actual usage requirements and is convenient for installation and disassembly is proposed. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an exhaust fan for a fresh air system to solve the problems raised in the above background art.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is:

[0006] An exhaust fan for a fresh air system includes a sealing mechanism. A main body mechanism is arranged on the side of the sealing mechanism, and a connecting mechanism is arranged on the side of the main body mechanism. The sealing mechanism includes a sealing outer shell. An expansion slot is opened inside the side of the sealing outer shell. A first limiting slot is opened at the top end of the side of the expansion slot. A cable hole is opened inside the top surface of the sealing outer shell. An installation block one is fixedly connected to the top end of the side of the sealing outer shell.

[0007] A further improvement of the technical solution of the utility model lies in that: the main body mechanism includes an expansion block, which is slidably connected inside the expansion slot. The shape of the expansion block is rectangular and is adapted to the shape of the expansion slot. The expansion block and the expansion slot are in interference fit. A limiting block is fixedly connected to the top end of the side of the expansion block, and the limiting block is slidably connected inside the first limiting slot. A cable slot is opened inside the side of the expansion block.

[0008] A further improvement of the technical solution of the utility model lies in that: the side of the expansion block is fixedly connected to a main body outer shell. The number of the expansion blocks is two, and the other expansion block is fixedly connected to the other side of the main body outer shell. An air vent slot is opened at one end of the top surface of the main body outer shell, and a fan slot is opened on the top surface of the main body outer shell.

[0009] A further improvement of the technical solution of the present utility model lies in that: the connecting mechanism includes a connecting outer shell, the connecting outer shell is slidably connected to the surface of another telescopic block, the shape of the connecting outer shell is rectangular and is adapted to the shape of the telescopic block, and the connecting outer shell is in interference fit with the telescopic block.

[0010] A further improvement of the technical solution of the present utility model lies in that: a through groove is provided inside the side surface of the connecting outer shell, one end of the through groove penetrates through the other side surface of the connecting outer shell, and a second limiting groove is provided at the top end of the side surface of the through groove.

[0011] A further improvement of the technical solution of the present utility model lies in that: the other limiting block is slidably connected inside the second limiting groove, a second installation clamping block is fixedly connected to the top end of the side surface of the connecting outer shell, and a connecting cable hole is provided inside the top surface of the connecting outer shell.

[0012] Due to the adoption of the above technical solution, the technical progress achieved by the present utility model compared with the prior art is:

[0013] 1. The present utility model provides an exhaust fan for a fresh air system, which adopts the cooperation of a sealing mechanism, a sealing outer shell, a telescopic groove, a first limiting groove, a cable hole, and a first installation clamping block. Through the cooperation of multiple sealing mechanisms, main body mechanisms, and connecting mechanisms, the infinite extension of the device can be realized to adapt to the ventilation work in different environments. The sealing mechanism is arranged at both ends of the device to play a sealing role, preventing foreign objects from falling into the interior of the device and causing internal damage. The telescopic groove can provide a basis for the installation of the main body mechanism. After installation, the device can discharge the cable through the cable hole for power supply. The first installation clamping block can enable the device to be clamped between a window or a door seam to adapt to more usage scenarios and improve the adaptability of the device.

[0014] 2. The present utility model provides an exhaust fan for a fresh air system, which adopts the cooperation of a main body mechanism, a telescopic block, a cable groove, a limiting block, a main body outer shell, a ventilation groove, and a fan groove. By inserting the telescopic block into the telescopic groove, the telescopic block and the telescopic groove are in interference fit, and the telescopic block will not slide to the bottom of the telescopic groove due to gravity. The limiting block can be inserted into the first limiting groove to facilitate distinguishing the front and back of the device. The cable groove can enable the cables of the electronic components to be installed in the main body outer shell to pass through the cable groove and be discharged through the cable hole or the connecting cable hole for convenient wiring. The ventilation groove can facilitate the intake of air inside the main body outer shell, and the fan groove can provide an air outlet for the exhaust fan to be installed inside the main body outer shell, improving the adaptability of the device.

[0015] 3. The present utility model provides an exhaust fan for a fresh air system, which adopts the cooperation of a connection mechanism, a connection housing, a through groove, a second limiting groove, a second installation block, and a connection cable hole. By inserting the telescopic block into the interior of the through groove, and the telescopic block and the through groove are in interference fit, so that it will not accidentally slide. By inserting the telescopic blocks into the left and right sides of the through groove respectively, two main body mechanisms can be connected together through the connection mechanism. The cooperation of multiple main body mechanisms and the connection mechanism can achieve infinite stacking of the device. The second limiting groove can be inserted into the first limiting groove, which is convenient for distinguishing the front and back of the device and improves the adaptability of the device in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0017] Figure 2 is a structural schematic diagram of the sealing mechanism of the present utility model;

[0018] Figure 3 is a structural schematic diagram of the main body mechanism of the present utility model;

[0019] Figure 4 is a structural schematic diagram of the connection mechanism of the present utility model.

[0020] In the figure: 1. Sealing mechanism; 11. Sealing housing; 12. Telescopic groove; 13. First limiting groove; 14. Cable hole; 15. First installation block; 2. Main body mechanism; 21. Telescopic block; 22. Cable groove; 23. Limiting block; 24. Main body housing; 25. Ventilation groove; 26. Fan groove; 3. Connection mechanism; 31. Connection housing; 32. Through groove; 33. Second limiting groove; 34. Second installation block; 35. Connection cable hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following further describes the present utility model in detail with reference to the embodiments:

[0022] Embodiment 1

[0023] As Figures 1-4 shown, the present utility model provides an exhaust fan for a fresh air system, including a sealing mechanism 1. A main body mechanism 2 is arranged on the side of the sealing mechanism 1, and a connection mechanism 3 is arranged on the side of the main body mechanism 2. The sealing mechanism 1 includes a sealing housing 11. A telescopic groove 12 is opened inside the side of the sealing housing 11. A first limiting groove 13 is opened at the top of the side of the telescopic groove 12. A cable hole 14 is opened inside the top surface of the sealing housing 11. A first installation block 15 is fixedly connected to the top of the side of the sealing housing 11.

[0024] In this embodiment, the infinite extension of the device can be achieved through the cooperation of multiple sealing mechanisms 1, main body mechanisms 2, and connecting mechanisms 3 to adapt to the ventilation work in different environments. The sealing mechanisms 1 are arranged at both ends of the device to play a role in sealing, preventing foreign objects from falling into the interior of the device and causing internal damage. The telescopic groove 12 can provide a basis for the installation of the main body mechanism 2. After installation, the device can discharge the cable through the cable hole 14 for power supply. The installation block 15 can enable the device to be clamped between the window or door gap to adapt to more usage scenarios.

[0025] Embodiment 2

[0026] As Figures 1-4 shown, on the basis of Embodiment 1, the present utility model provides a technical solution: Preferably, the main body mechanism 2 includes a telescopic block 21. The telescopic block 21 is slidably connected to the inside of the telescopic groove 12. The shape of the telescopic block 21 is rectangular and is adapted to the shape of the telescopic groove 12. The telescopic block 21 and the telescopic groove 12 are in interference fit. The top end of the side surface of the telescopic block 21 is fixedly connected with a limit block 23. The limit block 23 is slidably connected to the inside of the first limit groove 13. A cable groove 22 is opened inside the side surface of the telescopic block 21. The side surface of the telescopic block 21 is fixedly connected with a main body housing 24. The number of telescopic blocks 21 is two, and the other telescopic block 21 is fixedly connected to the other side surface of the main body housing 24. An air vent groove 25 is opened at one end of the top surface of the main body housing 24, and a fan groove 26 is opened on the top surface of the main body housing 24.

[0027] In this embodiment, by inserting the telescopic block 21 into the inside of the telescopic groove 12, the telescopic block 21 and the telescopic groove 12 are in interference fit, and the telescopic block 21 will not slide to the bottom of the telescopic groove 12 due to gravity. The limit block 23 can be inserted into the inside of the first limit groove 13 to facilitate distinguishing the front and back of the device. The cable groove 22 can enable the cables of the electronic components to be installed on the main body housing 24 to pass through the cable groove 22 and be discharged through the cable hole 14 or the connecting cable hole 35 for convenient wiring. The air vent groove 25 can facilitate the intake of air inside the main body housing 24, and the fan groove 26 can provide an air outlet for the exhaust fan to be installed inside the main body housing 24.

[0028] Embodiment 3

[0029] As Figures 1-4As shown, based on Embodiment 1, the present utility model provides a technical solution: Preferably, the connecting mechanism 3 includes a connecting housing 31 which is slidably connected to the surface of another telescopic block 21. The connecting housing 31 is rectangular in shape and is adapted to the shape of the telescopic block 21. The connecting housing 31 is in interference fit with the telescopic block 21. A through groove 32 is formed inside the side surface of the connecting housing 31. One end of the through groove 32 penetrates through the other side surface of the connecting housing 31. A second limiting groove 33 is formed at the top of the side surface of the through groove 32. Another limiting block 23 is slidably connected inside the second limiting groove 33. A second mounting block 34 is fixedly connected to the top of the side surface of the connecting housing 31. A connecting cable hole 35 is formed inside the top surface of the connecting housing 31.

[0030] In this embodiment, by inserting the telescopic block 21 into the through groove 32, and the telescopic block 21 and the through groove 32 are in interference fit, so that it will not accidentally slide. By inserting the telescopic block 21 into the left and right sides of the through groove 32 respectively, the two main body mechanisms 2 can be connected together through the connecting mechanism 3. The cooperation of multiple main body mechanisms 2 and the connecting mechanism 3 can realize the infinite stacking of the device. The second limiting groove 33 can be inserted into the first limiting groove 13 to facilitate distinguishing the front and back of the device.

[0031] Next, specifically describe the working principle of the exhaust fan of this fresh air system.

[0032] As Figures 1-4 shown, by inserting the telescopic block 21 at one end of the main body housing 24 into the telescopic groove 12, and selectively inserting the telescopic block 21 at the other end of the main body housing 24 into the main body mechanism 2 or the connecting mechanism 3 according to actual usage requirements. If the length of multiple main body mechanisms 2 is required to meet the ventilation requirements in actual situations, then insert the other end of the main body housing 24 into the through groove 32, and insert the other end of the through groove 32 into the telescopic block 21 on the side surface of another main body mechanism 2 to realize the combined use of multiple main body mechanisms 2. Move the combined device to a suitable position, and expand and contract between the through groove 32 and the telescopic groove 12, so that the device can be stuck in the current position, and further fix it by clamping the first mounting block 15 and the second mounting block 34 at the window or door gap, making the device more stable.

[0033] Generally speaking, the present utility model has been described in detail above. However, based on the present utility model, some modifications or improvements can be made, which are obvious to those of ordinary skill in the technical field. Therefore, the modifications or improvements made without departing from the spirit of the present utility model are within the protection scope of the present utility model.

Claims

1. A fresh air system exhaust fan, comprising a sealing mechanism (1), characterized in that: The side of the sealing mechanism (1) is provided with a main body mechanism (2), and the side of the main body mechanism (2) is provided with a connecting mechanism (3). The sealing mechanism (1) includes a sealing outer shell (11). An expansion slot (12) is formed in the inner side of the sealing outer shell (11). A first limiting slot (13) is formed at the top end of the side of the expansion slot (12). A cable hole (14) is formed in the inner side of the top surface of the sealing outer shell (11). A first installation clamping block (15) is fixedly connected to the top end of the side of the sealing outer shell (11).

2. The exhaust fan of a fresh air system according to claim 1, wherein: The main body mechanism (2) includes an expansion block (21). The expansion block (21) is slidably connected to the inside of the expansion slot (12). The expansion block (21) is rectangular in shape and is adapted to the shape of the expansion slot (12). The expansion block (21) is in interference fit with the expansion slot (12). A limiting block (23) is fixedly connected to the top end of the side of the expansion block (21). The limiting block (23) is slidably connected to the inside of the first limiting slot (13). A cable slot (22) is formed in the inner side of the side of the expansion block (21).

3. The exhaust fan of a fresh air system according to claim 2, wherein: A main body outer shell (24) is fixedly connected to the side of the expansion block (21). The number of the expansion blocks (21) is two. The other expansion block (21) is fixedly connected to the other side of the main body outer shell (24). An air vent slot (25) is formed at one end of the top surface of the main body outer shell (24). A blower slot (26) is formed in the top surface of the main body outer shell (24).

4. The exhaust fan of a fresh air system according to claim 1, characterized in that: The connecting mechanism (3) includes a connecting outer shell (31). The connecting outer shell (31) is slidably connected to the surface of the other expansion block (21). The connecting outer shell (31) is rectangular in shape and is adapted to the shape of the expansion block (21). The connecting outer shell (31) is in interference fit with the expansion block (21).

5. The exhaust fan of a fresh air system according to claim 4, characterized in that: A through slot (32) is formed in the inner side of the side of the connecting outer shell (31). One end of the through slot (32) penetrates through the other side of the connecting outer shell (31). A second limiting slot (33) is formed at the top end of the side of the through slot (32).

6. The exhaust fan of a fresh air system according to claim 5, wherein: The other limiting block (23) is slidably connected to the inside of the second limiting slot (33). A second installation clamping block (34) is fixedly connected to the top end of the side of the connecting outer shell (31). A connecting cable hole (35) is formed in the inner side of the top surface of the connecting outer shell (31).

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