Multi-air-inlet type ventilating fan

Abstract

The utility model provides a multi-air-inlet type ventilating fan, and relates to the field of pipeline ventilating fans, one side face of a box body is provided with an air outlet, a volute is contained in the box body, the air outlet end of the volute is communicated with the air outlet, a wind wheel is rotatably arranged in the air inlet end of the volute, and a plurality of air inlets are reserved in the side face of the box body or a box cover. Air inlet cover plates are detachably arranged on the air inlets, opening and closing of the multiple air inlets are achieved, so that air inlet channels or application of the multiple air inlet channels are changed, and the motor is arranged on the bottom face of the box body and drives the wind wheel to rotate. An air inlet guide cover is detachably arranged on the air inlet, and an air outlet guide cover is detachably arranged on the air outlet; the air inlet guide cover is connected with a sleeve; according to the multi-air-inlet type ventilating fan, the multiple air inlets are reserved in the box body, the air inlet pipelines can be installed on the multiple faces of the box body, the multi-air-inlet type ventilating fan adapts to the installation environments with different pipeline angles, the air inlet channels can be changed according to the actual use scene, the application situation of the multiple air inlet channels is also considered, and installation is more convenient and faster.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline ventilation fans, in particular to a multi-air inlet type ventilation fan. Background Art

[0002] A DC duct ventilation fan (blower) is a fan device used for duct ventilation. Its working principle is to blow fresh air into the duct through the fan, and at the same time discharge the dirty air in the duct to realize the circulation and renewal of the air in the duct. This fan is usually driven by a DC motor, with the characteristics of low noise, high efficiency, and energy saving. It is suitable for various duct ventilation occasions, such as kitchens, bathrooms, basements, etc. DC duct ventilation fans are widely used in construction, industrial production and other fields.

[0003] A DC duct ventilation fan (fan) comprises a box body, with a fan and a motor built in the box body. An air inlet and an air outlet are arranged on the box body, and the air inlet is connected to the air inlet duct. The motor drives the fan to rotate, thereby generating negative pressure, and the air at the air inlet is discharged from the air outlet. However, the existing DC duct ventilation fan (fan) often has only one air inlet and one air outlet arranged on the box body, and the position of the air inlet on the box body is fixed, resulting in only one air inlet channel, which may cause the air inlet duct and the air inlet to be incompatible. Therefore, this case is generated, so that the ventilation fan (fan) is suitable for a variety of application scenarios, taking into account ventilation of multiple air inlet channels. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a multi-air inlet type ventilation fan, which solves the problems raised in the above background technology.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: a multi-inlet ventilation fan: comprising a box body, a volute, and a motor, the front of the box body is covered with a box cover, a side of the box body is provided with an air outlet, the volute is accommodated and fixed in the box body, the air outlet end of the volute is connected to the air outlet, a wind wheel is rotatably arranged in the air inlet end of the volute, a plurality of air inlets are reserved on the side of the box body or on the box cover, an air inlet cover is detachably arranged on the air inlet, and the opening and closing of the multiple air inlets are realized, thereby changing the air inlet channel or applying multiple air inlet channels, the motor is fixedly arranged on the bottom surface of the box body, the output end of the motor is connected to the center of the wind wheel, driving the wind wheel to rotate, so that negative pressure is generated in the box body, and air enters from the air inlet, passes through the volute, and is discharged from the air outlet.

[0008] Preferably, an air inlet guide cover is detachably mounted on the air inlet, and an air outlet guide cover is detachably mounted on the air outlet.

[0009] Preferably, the air inlet guide cover is connected to a sleeve.

[0010] Preferably, the sleeve is threadedly connected to the air inlet guide cover.

[0011] Preferably, the sleeve has two connecting pipes at the end.

[0012] Preferably, a one-way air outlet valve is provided on the air outlet guide cover, and the one-way air outlet valve includes a central axis, a group of semicircular rotating baffles, and a limit block.

[0013] Preferably, a filter screen is provided in the air inlet guide cover.

[0014] Preferably, the air inlet cover is slidably connected to the side of the box body, a group of sliding grooves are arranged at both ends of the air inlet, and both sides of the air inlet cover are slidably connected in the group of sliding grooves.

[0015] Preferably, a fixing groove is provided on the front side of the box body, and a fixing rib is provided on the inner side of the box cover. When the box cover is closed on the front side of the box body, the fixing rib is matched with the fixing groove.

[0016] Preferably, the motor is fixed to the bottom surface of the box through a motor fixing bracket.

[0017] (III) Beneficial effects

[0018] The utility model provides a multi-inlet type ventilation fan, which has the following beneficial effects:

[0019] 1. The multi-inlet ventilation fan has changed the traditional practice of only reserving one air inlet, which makes it unable to adapt to multiple application scenarios and is not friendly to the installation of air inlet ducts. This has been optimized by reserving multiple air inlets on the box body. Air inlet ducts can be installed on multiple sides of the box body to adapt to the installation environment of different duct angles. The air inlet channel can be changed according to the actual use scenario, and the application of multiple air inlet channels is also taken into account. The installation is more convenient, the applicability is strong, and the market promotion is strong.

[0020] 2. The multi-inlet ventilation fan has an outer end of an air inlet guide cover and a sleeve threaded connection, which improves loading and unloading efficiency and improves the sealing between the air inlet guide cover and the sleeve. At the same time, multiple connecting pipes are arranged at the outer end of the sleeve, which is a practical multi-inlet duct connection mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of a multi-inlet ventilation fan structure of the utility model. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the structure of an air inlet guide cover and a sleeve of a multi-air inlet type ventilation fan of the utility model;

[0023] Figure 3 This is a schematic diagram of a multi-inlet ventilation fan structure of the utility model. Figure 2 .

[0024] In the figure: 1. box body; 2. box cover; 3. volute; 4. wind wheel; 5. motor; 6. air outlet; 7. air inlet; 8. air inlet cover; 9. air inlet guide cover; 10. air outlet guide cover; 11. slide; 12. motor fixing bracket; 13. sleeve; 14. connecting pipe. DETAILED DESCRIPTION

[0025] The utility model provides a multi-inlet 7-type ventilation fan, such as Figure 1-3 As shown, it includes a box body 1, a volute 3, and a motor 5. The front of the box body 1 is covered with a box cover 2, and an air outlet 6 is opened on one side of the box body 1. The volute 3 is accommodated and fixed in the box body 1, and the air outlet end of the volute 3 is connected to the air outlet 6. A wind wheel 4 is rotatably arranged in the air inlet end of the volute 3. A plurality of air inlets 7 are reserved on the side of the box body 1, and an air inlet cover plate 8 is detachably arranged on the air inlet 7 to realize the opening and closing of the multiple air inlets 7, so as to change the air inlet channel or the multiple air inlets. Channel application, the motor 5 is fixed on the bottom surface of the box body 1, and the output end of the motor 5 is connected to the center of the wind wheel 4, driving the wind wheel 4 to rotate, so that negative pressure is generated in the box body 1, and the air enters from the air inlet 7, passes through the volute 3, and is discharged from the air outlet 6. In this technical solution, the air inlets 7 opened on different sides of the box body 1 are set to connect different water inlet channels according to different application scenarios, and other water inlets are covered with a detachable air inlet cover 8 to ensure the sealing of the entire box body 1.

[0026] Embodiment 1, as Figure 1 As shown, the air inlet 7 is detachably provided with an air inlet guide hood 9, and the air outlet 6 is detachably provided with an air outlet guide hood 10. The air inlet guide hood 9 and the air outlet guide hood 10 can better guide the wind flow and facilitate the connection with the air inlet duct and the air outlet duct, making it more convenient to install the ventilation fan in the entire ventilation system.

[0027] In the above-mentioned embodiment 1, the sleeve 13 is connected to the air inlet guide cover 9, and the air inlet guide cover 9 and the sleeve 13 are detachably connected. The connection method includes various forms, including but not limited to the following: Figure 2 As shown, the sleeve 13 and the air inlet guide cover 9 are connected by threads.

[0028] The end of the sleeve 13 in the first embodiment may be a plurality of connecting pipes 14, including but not limited to: Figure 2 As shown, there are two connecting pipes 14, and the air inlet ducts are connected through the connecting pipes 14 to realize the coexistence of multiple air inlet ducts.

[0029] In the above embodiment, a one-way air outlet valve is provided on the air outlet guide cover 10, and the function of the one-way air outlet valve is to realize one-way flow of air.

[0030] In the above embodiment, a filter is provided in the air inlet guide cover 9, and the filter can block the entry of dust to a certain extent.

[0031] In the second embodiment, the air inlet cover 8 is slidably connected to the side of the box body 1, and a group of slide grooves 11 are set at both ends of the air inlet 7. The two sides of the air inlet cover 8 are slidably connected in a group of slide grooves 11. The air inlet cover 8 can be detachably connected to the side of the box body 1 in various forms, including but not limited to the sliding connection of the case embodiment.

[0032] Embodiment three, a fixing groove is provided on the front side of the box body 1, and a fixing rib is provided on the inner side of the box cover 2. When the box cover 2 is closed on the front side of the box body 1, the fixing rib is matched with the fixing groove. A fixing groove is provided on the front side of the box body 1, and a fixing rib is provided on the inner side of the box cover 2. The fixing rib is matched with the fixing groove, which improves the sealing between the box cover 2 and the box body 1, forms a good negative pressure space in the box body 1, and improves the ventilation efficiency.

[0033] In the above-mentioned embodiments, the motor 5 is fixed to the bottom surface of the box body 1 through the motor fixing frame 12. The motor fixing frame 12 has mounting holes at both ends. The motor fixing frame 12 is fixed to the bottom surface of the box body 1 through fasteners, and then the motor 5 is fixed to the motor fixing frame 12.

[0034] Working principle: Figure 3 As shown, the box body 1 can be used as a ventilation fan assembly, which is installed in the factory and then transported to relevant occasions for installation, wherein the air outlet 6 of the box body 1 is connected to the air outlet hood 10. Since the side of the box body 1 is composed of multiple air inlets 7, according to the actual situation of the application occasion, the air inlet cover 8 on the relevant air inlet 7 that needs to be connected to the air inlet duct is removed, and then the air inlet 7 hood is connected to the air inlet 7. The end of the air inlet 7 hood can be directly connected to the air inlet duct, or a sleeve 13 can be threadedly connected to the outer end of the air inlet hood 9. The outer end of the sleeve 13 is a plurality of connecting pipes 14, which are connected to the air inlet duct by the connecting pipes 14, so as to realize the connection of one air inlet 7 with multiple air inlet ducts.

[0035] In summary, the mode can be one air inlet duct, one air inlet 7 and one air outlet 6; the mode can also be multiple air inlet ducts, multiple air inlets 7 and one air outlet 6; and the mode can also be multiple air inlet ducts, one air inlet 7 and one air outlet 6.

[0036] To sum up, the multi-inlet 7-type ventilation fan has changed the traditional practice of only reserving one air inlet 7, which makes it unable to adapt to multiple application scenarios and is not friendly to the installation of air inlet ducts. This is optimized by reserving multiple air inlets 7 on the box body 1, and air inlet ducts can be installed on multiple surfaces of the box body 1 to adapt to the installation environment of different duct angles. The air inlet channel can be changed according to the actual use scenario, and the application of multiple air inlet channels is also taken into account. The installation is more convenient, the applicability is strong, and the market promotion is strong; the multi-inlet 7-type ventilation fan has a fixing groove on the front of the box body 1, and a fixing rib is provided on the inner side of the box cover 2. The fixing rib and the fixing groove are matched to improve the sealing between the box cover 2 and the box body 1, forming a good negative pressure space in the box body 1, and improving the ventilation efficiency.

[0037] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-inlet ventilation fan, characterized in that: The invention comprises a box body (1), a volute (3), and a motor (5); the box body (1) is covered with a box cover (2) on the front, an air outlet (6) is provided on one side of the box body (1), the volute (3) is accommodated and fixed in the box body (1), the air outlet end of the volute (3) is connected to the air outlet (6), a wind wheel (4) is rotatably arranged in the air inlet end of the volute (3), and a plurality of air inlets (7) are reserved on the side of the box body (1) or the box cover (2). ), an air inlet cover plate (8) is detachably mounted on the air inlet (7) to realize opening and closing of multiple air inlets (7), thereby changing the air inlet channel or applying multiple air inlet channels, the motor (5) is fixedly mounted on the bottom surface of the housing (1), the output end of the motor (5) is connected to the center of the wind wheel (4), driving the wind wheel (4) to rotate, so that negative pressure is generated in the housing (1), and air enters from the air inlet (7), passes through the volute (3), and is discharged from the air outlet (6); An air inlet guide cover (9) is detachably mounted on the air inlet (7), and an air outlet guide cover (10) is detachably mounted on the air outlet (6); a sleeve (13) is connected to the air inlet guide cover (9); and two connecting pipes (14) are provided at the end of the sleeve (13).

2. The multi-inlet ventilation fan according to claim 1, characterized in that: The sleeve (13) is threadedly connected to the air inlet guide cover (9).

3. The multi-inlet ventilation fan according to claim 1, characterized in that: The motor (5) is fixed to the bottom surface of the box (1) via a motor fixing frame (12).

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