An adjustable anti-fall-off filter type sidewall fan

Abstract

This utility model discloses an adjustable, anti-fall-off filter-type wall-mounted fan, which includes a fan housing with a waterproof elbow fixed to the front side of the housing, the air outlet of the waterproof elbow being inclined downwards; a side positioning plate fixed to the fan housing; an adjustment groove on the fan housing, with an adjustable positioning plate installed within the adjustment groove; a fan and self-closing louvers fixed inside the fan housing; and a filter assembly fixed to the air outlet, the filter assembly including a filter screen or filter element. This adjustable, anti-fall-off filter-type wall-mounted fan is fixed to the wall, providing high strength, preventing loosening, and greatly improving safety; the addition of a detachable filter device improves the quality of the delivered air, meeting environmental purification needs and making the workshop environment more comfortable; it is simple to operate, convenient and flexible, improving on-site fan installation efficiency and reducing installation costs.

Description

Technical Field

[0001] This utility model relates to the field of ventilation equipment technology, and specifically discloses a sidewall adjustable anti-fall-off filter type sidewall fan. Background Technology

[0002] In the existing technology, the sidewall fan casing is divided into two main parts: a lower square casing and an upper rainproof elbow. The two are connected by flanges and fixed by bolts.

[0003] When installing these wall-mounted fans on-site, a square opening is typically made in the wall, the fan is embedded in the wall, and then the opening is sealed with non-combustible or flame-retardant materials or cement grout to secure the fan and ensure its normal operation. Usually, when installing the fan into the wall, it cannot be placed upright and is prone to falling off. Without sealing the wall, this is very dangerous and requires manual support. Furthermore, wall-mounted fans typically do not have filters, which can lead to excessive pollution or impurities in the delivered air. This is particularly problematic in electronics factories that require specific purification standards; the lack of filtration negatively impacts the workshop environment and consequently, product quality.

[0004] In view of the above-mentioned technical defects, the technical problem that urgently needs to be solved by those skilled in the art is: how to design an adjustable anti-detachment filter-type sidewall fan through technical improvement, which can achieve anti-detachment and adjustability after the sidewall fan is installed. Utility Model Content

[0005] To overcome the shortcomings of existing technology, this utility model discloses an adjustable anti-fall-off filter-type wall fan, which achieves positioning when fixed to the wall through a positioning flange, realizing double fixation to prevent the fan from falling out inside the wall; at the same time, a quick-release filter is added at the elbow to filter the airflow entering the room.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] An adjustable anti-fall-off filter-type sidewall fan includes a fan housing, a waterproof elbow fixed to the front side of the fan housing, and the air outlet of the waterproof elbow is inclined downward; a side positioning plate is fixed on the fan housing, and an adjustment groove is provided on the fan housing, with an adjustable positioning plate installed in the adjustment groove.

[0008] The fan housing contains a fan and self-closing louvers.

[0009] A filter assembly is fixed on the air vent, and the filter assembly includes a filter screen or a filter element.

[0010] The filter assembly includes an outer filter screen, an inner filter screen, and a filter element between them; the outer filter screen and the inner filter screen are connected and fixed together and can be disassembled, allowing the filter element to be replaced.

[0011] The filter assembly includes an outer filter screen, an inner filter screen, and a filter core between the two; the outer or inner filter screen is formed by bending, and is integrally molded on multiple sides, with one side being detachable, allowing for flexible disassembly and side-pulling removal of the filter for easy cleaning or replacement.

[0012] The bottom of the waterproof elbow is provided with a support net, and the bottom of the filter assembly is provided with a support point. The support point cooperates with the support net to support the filter assembly when it falls. The waterproof elbow is also provided with a magnetic switch, which cooperates with the magnetic plate on the filter assembly to achieve the opening and closing of the switch when magnetically attracted.

[0013] The self-closing louvers on the aforementioned louvered window can be either built-in or external. External louvers are used for exhaust ventilation, while built-in louvers are used for indoor air supply.

[0014] This utility model provides an adjustable, anti-fall-off filter-type sidewall fan, which has the following advantages compared with the prior art: A waterproof elbow is fixed to the front side of the fan housing, with the air outlet of the waterproof elbow angled downwards; a side positioning plate is fixed to the fan housing, and an adjustment groove is provided on the fan housing, with an adjustable positioning plate installed within the adjustment groove; a fan and self-closing louvers are fixed inside the fan housing; a filter assembly is fixed to the air outlet, and the filter assembly includes at least a filter screen or a filter element.

[0015] Its advantages can be summarized as follows:

[0016] The fan is fixed to the wall, which provides high strength, prevents loosening, and greatly improves safety;

[0017] The addition of a retractable filter device improves the quality of the supplied air, meets environmental purification requirements, and makes the workshop environment more comfortable.

[0018] It is simple to operate, convenient and flexible, which improves the efficiency of on-site wind turbine installation and reduces installation costs. Attached Figure Description

[0019] Figure 1 : Schematic diagram of the internal structure of this utility model;

[0020] Figure 2 : A schematic diagram of the structure of this utility model viewed from below;

[0021] Figure 3 : Figure 1 Enlarged schematic diagram of the structure of region A in the middle;

[0022] Figure 4 Example 1: Assembly structure schematic diagram;

[0023] Figure 5 Example 2: Assembly structure schematic diagram;

[0024] Figure 6 : Operating status diagram of the air supply fan under normal air volume;

[0025] In the diagram: 1. Fan housing; 11. Adjustment slot; 2. Fan; 3. Adjustable positioning plate; 4. Side positioning plate; 5. Self-closing louvers; 51. Built-in fan blades; 52. External fan blades; 6. Waterproof elbow; 60. Air outlet; 61. Bending section; 62. Hinge shaft; 63. Bottom support plate; 64. Magnetic switch; 7. Filter assembly; 71. Outer filter screen; 72. Filter core; 73. Inner filter screen; 74. Bottom curled section; 75. Magnetic sheet; 8. Support net; 81. Locking part; 82. Vertical bending part; 83. Support part; 9. Wall. Detailed Implementation

[0026] The present invention will be described in detail below through specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. However, it should be noted that the specific embodiments described below do not limit the technical solution. Those skilled in the art can make further technical extensions under the guidance of the following technical solutions. The scope of protection of this patent application is determined by the claims. Example

[0027] An adjustable, anti-fall-off filter-type sidewall fan includes a fan housing 1, which is typically square or cylindrical. A waterproof elbow 6 is fixed to the front side of the fan housing 1, and the air outlet 60 of the waterproof elbow 6 is inclined downwards. A side positioning plate 4 is fixed to the fan housing 1. Figure 2 As shown, the fan housing 1 is provided with an adjustment groove 11, and an adjustable positioning plate 3 is provided in the adjustment groove 11. In this embodiment, the adjustable positioning plate is usually a right-angle plate, the bottom of which is fixed in the adjustment groove 11, and the vertical side is used to press against the wall to achieve fixation. During assembly, the relative distance between the adjustable positioning plate 3 and the side positioning plate 4 is adjusted to adapt to walls 9 of different thicknesses.

[0028] The fan housing 1 houses a fan 2 and self-closing louvers 5. The self-closing louvers 5 typically take two forms. In this embodiment, the adjustable, anti-fall-off filter-type wall fan is a supply fan, primarily used for indoor oxygen supply, guiding fresh outdoor air into the room. Under this functional requirement, the blades of the self-closing louvers 5 are internal blades 51, which open inwards when the fan 2 supplies air into the room.

[0029] When this utility model is in operation, a filter assembly 7 is fixed on the air outlet 60. The filter assembly 7 is fixed to the front edge of the bending part 61 of the waterproof elbow 6 by a single-end hinge.

[0030] In this embodiment, the filter assembly 7 includes an outer filter screen 71, an inner filter screen 73, and a filter element 72 between the two. The outer filter screen 71 is formed by bending. For easy disassembly, the outer filter screen 71 and the inner filter screen 73 are both formed separately and fixed together by bolts, which can be disassembled. After the bolts are removed, the filter element 72 can be replaced.

[0031] Furthermore, the filter element 72 can also be designed as a side-pull-out type, with the outer filter screen 71 being multi-faceted integrally molded and one side being detachable, allowing for flexible disassembly and side-pull-out removal of the filter element 72 for easy cleaning or replacement of the filter. This structure is commonly used in the field of sheet metal bending, and those skilled in the art can easily explain it under the guidance of the above-described specification; further details are omitted here.

[0032] With the above structural configuration, during operation, the external airflow can be filtered by the filter assembly 7 before entering the room under the action of the fan 2, thus improving the air environment in the workshop and thereby improving product quality. Furthermore, when a large amount of external air needs to be replenished in a timely manner, this invention also incorporates the following design: a support net 8 is bolted to the bottom of the waterproof elbow 6, and a support point is provided at the bottom of the filter assembly 7. In this embodiment, the lower edge of the outer filter net 71 is extended and rolled up to obtain a bottom rolled portion 74, which serves as the support point. Through the cooperation of the bottom rolled portion 74 and the support net 8, the filter assembly 7 is supported by the support net 8 when it falls. The purpose of this design is to increase the ventilation volume at the air outlet 60 after the filter assembly 7 falls, and to achieve insect and rodent prevention in the expanded area through the support net 8. To achieve controllable expansion of this ventilation volume, this invention also includes a magnetic switch 64 on the bottom support plate 63 at the lower part of the waterproof elbow 6. The magnetic switch 64 cooperates with the magnetic plate 75 on the filter assembly to achieve on / off control during magnetic attraction. With the above magnetic structure in place, the ventilation volume can be controlled automatically remotely. Example

[0033] Based on the structure of Embodiment 1, those skilled in the art can also design the self-closing louvers on the self-closing louver 5 as external louvers 52, such as... Figure 5As shown, when exhausting air from indoors to the outside, external louvers 52 are used. At this time, there is no need to filter indoor air. Only the outer filter screen 71 is set at the filter component 7. At the same time, the magnetic switch 64 can be turned on, and exhaust air through the outer filter screen 71 and the support net 8, thereby increasing the exhaust volume.

[0034] Multiple adjustable, anti-fall-off filter wall fans can be installed simultaneously in the same building, and exhaust and indoor air supply functions can be set separately according to needs. Indoor air supply and exhaust can be controlled remotely to continuously improve the indoor air environment of the building.

[0035] The advantages of this utility model can be summarized as follows: the adjustable anti-fall-off filter wall fan is fixed to the wall 9, which has high strength, prevents loosening, and greatly improves safety; the addition of a pull-out filter device improves the quality of the supplied air, meets the environmental purification needs, and makes the workshop environment more comfortable; the operation is simple, convenient and flexible, which improves the efficiency of on-site fan installation and reduces installation costs.

Claims

1. An adjustable anti-fall-off filter-type sidewall fan, characterized in that: It includes a fan housing, a waterproof elbow fixed to the front side of the fan housing, and the air outlet of the waterproof elbow is inclined downward; a side positioning plate is fixed on the fan housing, and an adjustment groove is provided on the fan housing, in which an adjustable positioning plate is provided; a fan and self-closing louvers are fixed inside the fan housing; a filter assembly is fixed on the air outlet, and the filter assembly includes a filter screen or a filter element.

2. The adjustable anti-fall-off filter-type sidewall fan according to claim 1, characterized in that: The filter assembly includes an outer filter screen, an inner filter screen, and a filter core between them; the outer filter screen and the inner filter screen are connected and fixed together as one unit and can be disassembled.

3. The adjustable anti-fall-off filter-type sidewall fan according to claim 1, characterized in that: The filter assembly includes an outer filter screen, an inner filter screen, and a filter core between the two; the outer or inner filter screen is obtained by bending, and is integrally formed on multiple sides, with one side being a separate part.

4. The adjustable anti-fall-off filter-type sidewall fan according to claim 1, characterized in that: The bottom of the waterproof elbow is provided with a support net, and the bottom of the filter assembly is provided with a support point. The support point cooperates with the support net to support the filter assembly when it falls. The waterproof elbow is also provided with a magnetic switch, which cooperates with the magnetic plate on the filter assembly to achieve the opening and closing of the switch when magnetically attracted.

5. The adjustable anti-fall-off filter-type sidewall fan according to claim 1, characterized in that: The self-closing louvers on the aforementioned louvered window can be either built-in or external. External louvers are used for exhaust ventilation, while built-in louvers are used for indoor air supply.

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