Dustproof fan

Abstract

The utility model relates to the technical field of fans, and provides a dustproof fan which comprises a fan body, an air inlet pipeline assembly arranged on one side of the fan body and an air outlet pipeline arranged on the lower side of the fan body. The air inlet pipeline assembly comprises a connecting cylinder installed on the draught fan body and a filter screen assembly detachably installed on the connecting cylinder. The connecting cylinder is a hollow cylinder with openings in the two ends, and an opening is formed in one side of the connecting cylinder; the two ends of the opening are provided with a first connecting base and a second connecting base respectively, connecting holes are formed in the first connecting base and the second connecting base respectively, through holes are formed in the sides, away from the connecting cylinder, of the connecting holes, supporting bases are arranged on the sides, away from the connecting cylinder, of the first connecting base and the second connecting base, and connecting columns are arranged on the supporting bases. The first connecting piece is rotatably installed on the connecting column of the first connecting base, and the second connecting piece is rotatably installed on the connecting column of the second connecting base.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a dust-proof fan. Background Art

[0002] A fan is a machine for compressing and transporting gas, and is widely used for ventilation in factories and buildings, ventilation and draft in industrial furnaces, and cooling and ventilation in air conditioning equipment and household appliances. The fan includes a fan body, and an air inlet duct and an air outlet duct arranged on the fan body. The air in the environment enters the fan body from the air inlet duct and is then sent out from the air outlet duct. However, when the existing fan is working, dust and impurities in the air will adhere to the fan body due to electrostatic adsorption and other reasons, causing damage to the fan body. Although the air inlet duct is installed with a filter, it is easy to cause the filter to be blocked after long-term use, affecting the working efficiency of the fan. The filter needs to be cleaned or replaced regularly. However, the existing filter is not easy to disassemble and install, and when cleaning or replacing the filter, the disassembly and installation of the filter is time-consuming and labor-intensive. Utility Model Content

[0003] In view of this, the purpose of the present invention is to provide a dust-proof fan that can solve or at least alleviate the above-mentioned problems, so as to effectively prevent dust and impurities in the air from adhering to the fan body, and to achieve rapid disassembly and assembly of the filter assembly, making the installation of the filter assembly time-saving and labor-saving.

[0004] The technical solution provided by the utility model is: a dust-proof fan, comprising a fan main body, an air inlet duct assembly arranged on one side of the fan main body, and an air outlet duct arranged on the lower side of the fan main body; the air inlet duct assembly comprises a connecting cylinder installed on the fan main body, and a filter assembly detachably installed on the connecting cylinder; the connecting cylinder is a hollow cylinder with openings at both ends, and an opening is opened on one side of the connecting cylinder; a first connecting seat and a second connecting seat are respectively provided at both ends of the opening, a through hole is provided on the side of the connecting hole facing away from the connecting cylinder, a support seat is provided on the side of the first connecting seat and the second connecting seat facing away from the connecting cylinder, a connecting column is provided on the support seat, the first connecting piece is rotatably mounted on the connecting column of the first connecting seat, and the second connecting piece is rotatably mounted on the connecting column of the second connecting seat.

[0005] In some embodiments, the first connecting member and the second connecting member are respectively Z-shaped, the upper ends of the first connecting member and the second connecting member are respectively set as connecting parts, and the lower ends of the first connecting member and the second connecting member are respectively set as pressing parts, and the connecting parts extend into the through hole and partially protrude from the through hole into the connecting hole.

[0006] In some embodiments, an elastic member is connected between one side of the first connecting member and the second connecting member facing the corresponding connecting seat and the corresponding connecting member.

[0007] In some embodiments, upper sides of the connecting portions of the first connecting member and the second connecting member are respectively configured as inclined surfaces.

[0008] In some embodiments, the inclined surface slopes downward from an upper side of the corresponding through hole toward the connecting hole.

[0009] In some embodiments, the filter assembly includes a ring, a filter installed on the inner side of the ring, a first protrusion arranged on the ring and corresponding to the first connecting seat, a first boss arranged on the side of the first protrusion facing the first connecting seat, a second protrusion arranged on the ring and corresponding to the second connecting seat, a second boss arranged on the side of the second protrusion facing the second connecting seat, and a handle arranged on the upper side of the ring.

[0010] In some embodiments, a coupling hole is formed on one side of the first and second bosses facing the through hole of the corresponding connecting seat.

[0011] In some embodiments, the connecting tube is provided with a first annular protrusion and a second annular protrusion on both inner sides adjacent to the opening, respectively.

[0012] In some embodiments, the first annular protrusion and the second annular protrusion respectively extend inward from the inner side of the connecting cylinder along the radial direction of the connecting cylinder.

[0013] In some embodiments, the elastic member is a spring.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects:

[0015] 1. The dust-proof fan provided by the utility model can effectively prevent dust and impurities in the air from adhering to the fan body, and realizes the rapid disassembly and assembly of the filter assembly, making the disassembly and assembly of the filter assembly time-saving and labor-saving.

[0016] 2. In the present invention, the inclined surface can conveniently position the filter assembly on the connecting cylinder.

[0017] 3. When the filter assembly is positioned on the connecting cylinder, both sides of the filter assembly rest against the first annular protrusion and the second annular protrusion respectively, so as to seal the gap between the filter assembly and the connecting cylinder and prevent the filter assembly from deviating from the initial installation position due to vibration during long-term use, so that the filter assembly is firmly positioned in the connecting cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1A three-dimensional diagram of a dust-proof blower according to an embodiment of the present invention is shown.

[0019] Figure 2 Shown Figure 1 Exploded view of the air inlet duct assembly of the dust control fan shown.

[0020] Figure 3 Shown Figure 1 A plan view of the air inlet duct assembly of the dust control fan is shown.

[0021] Figure 4 Shown along Figure 3 Cross-sectional view along line AA.

[0022] Explanation of the accompanying drawings: 1-fan body; 2-air inlet duct assembly; 21-connecting cylinder; 211-opening; 212-first connecting seat; 121-connecting hole; 122-through hole; 123-support seat; 124-connecting column; 213-second connecting seat; 214-first connecting piece; 141-connecting part; 142-pressing part; 143-inclined surface; 215-second connecting piece; 216-elastic part; 22-first annular protrusion; 23-second annular protrusion; 24-filter assembly; 41-ring; 42-filter; 43-first protrusion; 44-second protrusion; 45-first protrusion; 451-engagement hole; 46-second protrusion; 47-handle; 3-air outlet duct. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0025] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0026] In the present invention, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are merely relational words determined for the convenience of describing the structural relationships of the various parts or elements of the present invention, and do not specifically refer to any part or element in the present invention, and cannot be understood as a limitation on the present invention.

[0027] In this utility model, terms such as "fixed connection," "connected," and "connection" should be interpreted broadly to mean a fixed connection, an integral connection, or a detachable connection; a direct connection or an indirect connection through an intermediary. Relevant researchers or technicians in this field may determine the specific meaning of these terms in this utility model based on specific circumstances, and they should not be construed as limiting this utility model.

[0028] Also refer to Figures 1 to 4 A dust-proof fan according to one embodiment of the present invention includes a fan body 1, an air inlet duct assembly 2 disposed on one side of the fan body 1, and an air outlet duct 3 disposed on the underside of the fan body 1. Ambient air enters the fan body 1 through the air inlet duct assembly 2 and is then discharged through the air outlet duct 3. In this embodiment, both the fan body 1 and the air outlet duct 3 may employ existing structures in the prior art and will not be described in detail herein.

[0029] The air inlet duct assembly 2 includes a connecting cylinder 21 mounted on the fan body 1, and a filter assembly 24 detachably mounted on the connecting cylinder 21. The connecting cylinder 21 is roughly a hollow cylinder with openings at both ends. An opening 211 is provided on one side of the connecting cylinder 21, and the opening 211 partially penetrates the wall of the connecting cylinder 21 along the radial direction of the connecting cylinder 21. Preferably, the opening 211 is arranged along the circumference of the connecting cylinder 21. Preferably, the connecting cylinder 21 is provided with a first annular protrusion 22 and a second annular protrusion 23 on the two inner sides adjacent to the opening 211. The first annular protrusion 22 and the second annular protrusion 23 extend inward from the inner side of the connecting cylinder 21 along the radial direction of the connecting cylinder 21 respectively. A first connecting seat 212 and a second connecting seat 213 are provided at both ends of the opening 211 respectively. Preferably, the first connecting seat 212 and the second connecting seat 213 have the same structure, and the following description will be taken as an example of the first connecting seat 212.

[0030] The first connecting seat 212 is roughly a square body with one end open. A connecting hole 121 is provided on the first connecting seat 212, and a through hole 122 is provided on the side of the connecting hole 121 facing away from the connecting tube 21. A support seat 123 is provided on the side of the first connecting seat 212 facing away from the connecting tube 21. A connecting column 124 is provided on the support seat 123. The first connecting member 214 is rotatably mounted on the connecting column 124. The second connecting member 215 is rotatably mounted on the connecting column of the second connecting seat 213. The first connecting member 214 and the second connecting member 215 have the same structure, and the first connecting member 214 is used as an example for explanation below. The first connecting member 214 is roughly Z-shaped, and the upper end of the first connecting member 214 is set as a connecting portion 141, and the lower end of the first connecting member 214 is set as a pressing portion 142. The connecting portion 141 extends into the through hole 122, and partially protrudes from the through hole 122 into the connecting hole 121. An elastic member 216 is connected between the side of the first connecting member 214 facing the first connecting seat 212 and the first connecting member 212. Under the action of the elastic member 216, the connecting portion 141 of the first connecting member 214 partially enters the connecting hole 121. Preferably, the elastic member 216 is a spring. The upper side of the connecting portion 141 of the first connecting member 214 is set as an inclined surface 143. Preferably, the inclined surface 143 is inclined downward from the upper side of the through hole 122 toward the connecting hole 121. The inclined surface 143 can conveniently position the filter assembly 24 on the connecting cylinder 21. Under the action of the elastic member 216, the connecting portion 141 of the first connecting member 214 positions the filter assembly 24 at the opening 211 of the connecting cylinder 21. When the filter assembly 24 is positioned on the connecting cylinder 21, the two sides of the filter assembly 24 respectively abut against the first annular protrusion 22 and the second annular protrusion 23 to seal the gap between the filter assembly 24 and the connecting cylinder 21, and prevent the filter assembly 24 from deviating from the initial installation position due to vibration during long-term use, so that the filter assembly 24 is firmly positioned in the connecting cylinder 21.

[0031] The filter assembly 24 includes a collar 41, a filter 42 mounted on the inner side of the collar 41, a first protrusion 43 provided on the collar 41 and corresponding to the first connection seat 212, a first boss 45 provided on the side of the first boss 43 facing the first connection seat 212, a second protrusion 44 provided on the collar 41 and corresponding to the second connection seat 213, a second boss 46 provided on the side of the second protrusion 44 facing the second connection seat 213, and a handle 47 provided on the upper side of the collar 41. The first boss 45 and the second boss 46 can be inserted into the connection holes 121 of the first connection seat 212 and the second connection seat 213, respectively. The first boss 45 and the second boss 46 have the same structure, and the following description uses the first boss 45 as an example. The first boss 45 has an engagement hole 451 formed on the side of the first boss 45 facing the through hole 122 of the first connection seat 212. When the filter assembly 24 is positioned on the connecting cylinder 21 , the engaging hole 451 is opposite to the through hole 122 , and the connecting portion 141 of the first connecting member 214 partially enters the engaging hole 451 .

[0032] When the filter assembly 24 is positioned in the connecting cylinder 21, the filter assembly 24 is aligned with the opening 211 and pushed downward. At this time, the two sides of the filter assembly 24 are adjacent to the first annular protrusion 22 and the second annular protrusion 23 respectively. When the first boss 45 and the second boss 46 respectively enter the connecting holes 121 of the first connecting seat 212 and the second connecting seat 213, the filter assembly 24 continues to be pushed downward. The lower sides of the first boss 45 and the second boss 46 respectively press down the inclined surfaces 143 of the connecting parts 141 of the first connecting member 214 and the second connecting member 215. With the cooperation of the inclined surfaces 143, the connecting parts of the first connecting member 214 and the second connecting member 215 rotate outward relative to the corresponding connecting seats. When the engaging holes 451 of the first boss 45 and the second boss 46 move to the corresponding connecting parts, the corresponding connecting parts enter the corresponding engaging holes 451 under the action of the elastic member 216 to position the filter assembly 24 on the connecting cylinder 21.

[0033] When the filter assembly 24 needs to be removed from the connecting tube 21, the pressing parts 142 of the first connecting member 214 and the second connecting member 215 are pressed respectively so that the corresponding connecting parts are disengaged from the corresponding engaging holes, and the handle 47 is pulled upward to remove the filter assembly 24 from the connecting tube 21.

[0034] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A dust-proof fan, comprising a fan body, an air inlet duct assembly arranged on one side of the fan body, and an air outlet duct arranged on the lower side of the fan body; the air inlet duct assembly comprises a connecting cylinder mounted on the fan body, and a filter assembly detachably mounted on the connecting cylinder; the connecting cylinder is a hollow cylinder with two ends open, and one side of the connecting cylinder is provided with an opening; a first connecting seat and a second connecting seat are respectively provided at both ends of the opening; and the characteristics are as follows: The first connecting seat and the second connecting seat are respectively provided with connecting holes, and a through hole is provided on the side of the connecting hole facing away from the connecting tube. The first connecting seat and the second connecting seat are provided with a support seat on the side facing away from the connecting tube, and a connecting column is provided on the support seat. The first connecting member is rotatably mounted on the connecting column of the first connecting seat, and the second connecting member is rotatably mounted on the connecting column of the second connecting seat.

2. The dust-proof fan according to claim 1, characterized in that: The first connecting member and the second connecting member are respectively Z-shaped, the upper ends of the first connecting member and the second connecting member are respectively set as connecting parts, and the lower ends of the first connecting member and the second connecting member are respectively set as pressing parts, and the connecting parts extend into the through hole and partially protrude from the through hole to enter the connecting hole.

3. The dust-proof blower according to claim 2, characterized in that: An elastic member is connected between one side of the first connecting member and the second connecting member facing the corresponding connecting seat and the corresponding connecting member.

4. The dust-proof blower according to claim 3, characterized in that: The upper sides of the connecting parts of the first connecting member and the second connecting member are respectively configured as inclined surfaces.

5. The dust-proof blower according to claim 4, characterized in that: The inclined surface is inclined downward from the upper side of the corresponding through hole toward the connecting hole.

6. The dust-proof blower according to claim 4, characterized in that: The filter assembly includes a ring, a filter installed on the inner side of the ring, a first protrusion arranged on the ring and corresponding to the first connecting seat, a first boss arranged on the side of the first protrusion facing the first connecting seat, a second protrusion arranged on the ring and corresponding to the second connecting seat, a second boss arranged on the side of the second protrusion facing the second connecting seat, and a handle arranged on the upper side of the ring.

7. The dust-proof blower according to claim 6, characterized in that: The first and second bosses are provided with engaging holes on one side facing the through hole of the corresponding connecting seat.

8. The dust-proof blower according to claim 7, characterized in that: The connecting tube is provided with a first annular protrusion and a second annular protrusion on both inner sides adjacent to the opening, respectively.

9. The dust-proof blower according to claim 8, characterized in that: The first annular protrusion and the second annular protrusion are respectively extended inward from the inner side of the connecting cylinder along the radial direction of the connecting cylinder.

10. The dust-proof blower according to claim 3, characterized in that: The elastic member is a spring.

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