Ventilation and noise reduction energy-saving fan
By introducing porous sound-absorbing cotton and hard fiber filter plates into the duct-type variable frequency energy-saving fan, combined with a threaded assembly structure, the noise reduction and disassembly/maintenance problems of existing fan devices are solved, achieving the dual effects of variable frequency energy saving and sound absorption noise reduction, and facilitating maintenance.
Patent Information
- Application Number
- CN202520600009.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-01
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-04-01
AI Technical Summary
Existing duct-type variable frequency energy-saving fan devices have shortcomings in noise reduction and disassembly/maintenance, failing to achieve dual ventilation and noise reduction effects, and their internal components are not easy to disassemble.
A ventilation and noise reduction energy-saving fan, including a pipe frame, upper filter cover and lower filter cover, was designed. It adopts a variable frequency motor, combined with porous sound-absorbing cotton, hard fiber filter plate and threaded assembly structure to achieve the dual effects of variable frequency noise reduction and sound absorption noise reduction, and is easy to disassemble and maintain.
It achieves the dual effects of frequency conversion energy saving and noise reduction as well as sound absorption and noise reduction. At the same time, the internal components of the device are easy to disassemble and maintain, which improves the overall performance and maintenance convenience of the fan.
Smart Images
Figure CN223781702U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of energy-saving fan technology, specifically to an energy-saving fan for ventilation and noise reduction. Background Technology
[0002] Existing duct fans generate significant noise during operation due to the operation of their internal motor drive. Variable frequency motors are often used as the built-in drive components of duct fans, taking a duct variable frequency energy-saving fan device as an example.
[0003] Some duct-type variable frequency energy-saving fans achieve overall energy saving and noise reduction by controlling the speed of the variable frequency motor. However, the main body of the fan does not have the dual ventilation and noise reduction effects of variable frequency noise reduction and sound absorption noise reduction. Furthermore, the internal components of the main body are not easy to disassemble and maintain. Therefore, an energy-saving fan with ventilation and noise reduction is proposed to address the above problems. Utility Model Content
[0004] The purpose of this utility model is to provide an energy-saving fan for ventilation and noise reduction, which solves the problem that some duct-type variable frequency energy-saving fan devices achieve overall energy saving and noise reduction by controlling the speed of the variable frequency motor. However, the main body of the device does not have the dual ventilation and noise reduction effects of variable frequency noise reduction and sound absorption noise reduction, and the internal components of the main body of the device are not easy to disassemble and maintain.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] An energy-saving fan for ventilation and noise reduction includes a duct frame, an upper filter cover, and a lower filter cover. The upper filter cover is located at the top of the duct frame, and the lower filter cover is located at the bottom of the duct frame. The duct frame includes a shell, an annular plate, a perforated frame, porous sound-absorbing cotton, a fork, a positioning cylinder, an insert, a variable frequency motor, a T-shaped frame, and a fan blade shaft. The annular plate is fixedly installed on the outer side of the shell, and the perforated frame is fixedly installed on the inner wall of the shell. Porous sound-absorbing cotton is fixedly installed inside the perforated frame. The fork is fixedly installed on the inner wall of the perforated frame, and a positioning cylinder is fixedly installed at the bottom end of the fork. Two inserts are symmetrically fixedly distributed on the left and right sides of the top end of the fork. A variable frequency motor is installed on the top of the fork frame. Two T-shaped brackets are symmetrically and fixedly arranged on the top left and top right sides of the variable frequency motor housing. A fan blade shaft is fixedly installed at the end of the main shaft of the variable frequency motor. The upper filter cover includes an upper shell, a first hard fiber filter plate, and a guide. The first hard fiber filter plate is fixedly installed on the inner wall of the upper shell, and a guide is fixedly installed inside the first hard fiber filter plate. The lower filter cover includes a lower shell, a second hard fiber filter plate, a positioning block, and a groove. The second hard fiber filter plate is fixedly installed on the inner wall of the lower shell, and a positioning block is fixedly installed inside the second hard fiber filter plate. A groove is fixedly installed at the right end of the lower shell.
[0007] Preferably, when the variable frequency motor, T-shaped frame, and fan blade shaft are installed, the bottom rod of the T-shaped frame is slidably inserted into the inside of the insert, and the bottom of the variable frequency motor is in contact with the rubber ring fixedly installed in the inner groove of the top of the fork.
[0008] Preferably, when the pipe frame is assembled with the upper filter cover, the top of the housing is slidably inserted into the upper shell until the silicone ring fixedly installed at the bottom of the outer side of the upper shell and the silicone ring fixedly installed at the top of the ring plate come into contact with each other. The top of the hollow frame comes into contact with the upper shell. The upper shell is threaded into the internal threaded hole, the silicone ring fixedly installed at the bottom of the outer side of the upper shell, the silicone ring fixedly installed at the top of the ring plate, and the internal threaded hole of the ring plate by external studs.
[0009] Preferably, the guide is inserted into the semi-circular groove formed in the inner groove at the top of the fan blade shaft.
[0010] Preferably, when the pipe frame and the lower filter cover are assembled, the outer side of the lower shell is slidably placed against the inner wall of the shell, and the groove is slidably inserted into the guide groove opened on the inner wall of the right end of the shell.
[0011] Preferably, the square holes at the top of the positioning block and the bottom of the positioning cylinder are slidably inserted and fitted, and the internal threaded holes of the positioning block and the positioning cylinder are threadedly assembled by external studs.
[0012] Preferably, the left end of the housing and the left end of the lower housing are connected by a connector hole for the variable frequency motor pipeline to be inserted into the outside.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] In this invention, when the variable frequency motor starts working, it has the characteristics of variable frequency energy saving and noise reduction. Combined with the porous structure inside the porous sound-absorbing cotton, the porous structure inside the first hard fiber filter plate, and the porous structure inside the second hard fiber filter plate, it absorbs and reduces the noise generated when the variable frequency motor drives the fan blade shaft to rotate. The T-shaped frame base rod is slidably inserted into the insert cylinder. The bottom of the variable frequency motor is in contact with the rubber ring fixedly installed in the inner groove of the top of the fork frame. The top of the housing is slidably inserted into the upper housing. The bottom of the guide is inserted into the semi-circular groove opened in the inner groove of the top of the fan blade shaft. The upper housing and ring plate are threaded together using external studs. The outer side of the lower housing is slidably placed against the inner wall of the housing. The groove bar is slidably inserted into the guide groove opened in the inner wall of the right end of the housing. The top of the positioning block is slidably inserted into the square hole opened in the bottom of the positioning cylinder. The positioning block and positioning cylinder are threaded together using external studs. Through the above configuration, the main body of the device has a dual ventilation and noise reduction effect of variable frequency noise reduction and sound absorption noise reduction, and the internal components of the main body of the device are easy to disassemble and maintain. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall installation structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the disassembled structure of the pipe frame, upper filter cover, and lower filter cover of this utility model.
[0017] Figure 3 This is a cross-sectional structural diagram of some components of the pipe frame of this utility model;
[0018] Figure 4 This is a schematic diagram of the internal component structure of the lower filter cover of this utility model;
[0019] Figure 5 This is a schematic cross-sectional view of the internal components of the upper filter cover of this utility model;
[0020] Figure 6 This is a schematic diagram of the installation cross-sectional structure of the pipe frame, upper filter cover, and lower filter cover of this utility model;
[0021] Figure 7 This utility model Figure 6 A magnified structural diagram at point A;
[0022] Figure 8 This utility model Figure 6 A magnified structural diagram at point B;
[0023] Figure 9 This utility model Figure 6 A magnified structural diagram at point C;
[0024] Figure 10 This utility model Figure 6 A magnified structural diagram at point D.
[0025] In the diagram: 1. Pipe frame; 101. Shell; 102. Ring plate; 103. Hollowed-out frame; 104. Porous sound-absorbing cotton; 105. Fork frame; 106. Positioning cylinder; 107. Insert cylinder; 108. Variable frequency motor; 109. T-shaped frame; 110. Fan blade shaft; 2. Upper filter cover; 21. Upper shell; 22. First hard fiber filter plate; 23. Guide; 3. Lower filter cover; 31. Lower shell; 32. Second hard fiber filter plate; 33. Positioning block; 34. Groove. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] In the embodiments of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the position or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Similarly, words such as "a," "one," or "the" do not indicate a quantity limitation, but rather indicate the presence of at least one. Words such as "comprising" or "including" mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects.
[0028] Furthermore, in the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0029] Please see Figure 1-10 This utility model provides a technical solution:
[0030] An energy-saving ventilation and noise reduction fan includes a duct frame 1, an upper filter cover 2, and a lower filter cover 3. The upper filter cover 2 is installed at the top of the duct frame 1, and the lower filter cover 3 is installed at the bottom of the duct frame 1. The duct frame 1 includes a shell 101, an annular plate 102, a perforated frame 103, porous sound-absorbing cotton 104, a fork 105, a positioning cylinder 106, an insert 107, a variable frequency motor 108, a T-shaped frame 109, and a fan blade shaft 110. The annular plate 102 is fixedly installed on the outer side of the shell 101, and the perforated frame 103 is fixedly installed on the inner wall of the shell 101. The porous sound-absorbing cotton 104 is fixedly installed inside the perforated frame 103, and the fork 105 is fixedly installed on the inner wall of the perforated frame 103. The positioning cylinder 106 is fixedly installed at the bottom end of the fork 105, and the top left and top right sides of the fork 105 are symmetrically distributed and fixed. The system is equipped with two inserts 107. A variable frequency motor 108 is mounted on the top of the fork 105. Two T-shaped brackets 109 are symmetrically and fixedly arranged on the top left and top right sides of the variable frequency motor 108 housing. A fan blade shaft 110 is fixedly mounted at the end of the main shaft of the variable frequency motor 108. The upper filter cover 2 includes an upper shell 21, a first hard fiber filter plate 22, and a guide 23. The first hard fiber filter plate 22 is fixedly mounted on the inner wall of the upper shell 21, and the guide 23 is fixedly mounted inside the first hard fiber filter plate 22. The lower filter cover 3 includes a lower shell 31, a second hard fiber filter plate 32, a positioning block 33, and a groove 34. The second hard fiber filter plate 32 is fixedly mounted on the inner wall of the lower shell 31, and the positioning block 33 is fixedly mounted inside the second hard fiber filter plate 32. The groove 34 is fixedly mounted on the right end of the lower shell 31.
[0031] When installing the variable frequency motor 108, T-shaped frame 109 and fan blade shaft 110, the bottom rod of the T-shaped frame 109 is slidably inserted into the inside of the insert 107, and the bottom of the variable frequency motor 108 is in contact with the rubber ring fixedly installed in the top inner groove of the fork 105. Through the above settings, the variable frequency motor 108, T-shaped frame 109 and fan blade shaft 110 are positioned.
[0032] When assembling the pipe frame 1 and the upper filter cover 2, the top of the housing 101 is slidably inserted into the upper housing 21 until the silicone ring fixed at the bottom of the outer side of the upper housing 21 is in contact with the silicone ring fixed at the top of the ring plate 102. The top of the hollow frame 103 is in contact with the upper housing 21. The internal threaded hole of the upper housing 21, the internal threaded hole of the silicone ring fixed at the bottom of the outer side of the upper housing 21, the silicone ring fixed at the top of the ring plate 102, and the internal threaded hole of the ring plate 102 are threaded together by external studs. Through the above arrangement, the assembly structure of the pipe frame 1 and the upper filter cover 2 is formed.
[0033] The bottom of the guide 23 is inserted into the semi-circular groove opened in the top inner groove of the fan blade shaft 110. Through the above setting, the fan blade shaft 110 is limited and installed.
[0034] When the pipe frame 1 and the lower filter cover 3 are assembled, the outer side of the lower shell 31 is slidably placed against the inner wall of the shell 101, and the groove 34 is slidably inserted into the guide groove opened on the right end inner wall of the shell 101. Through the above settings, the pipe frame 1 and the lower filter cover 3 are assembled.
[0035] The positioning block 33 is slidably inserted into the square hole at the top and the positioning cylinder 106 at the bottom. The internal threaded hole of the positioning block 33 and the internal threaded hole of the positioning cylinder 106 are threaded together by external studs. Through the above arrangement, the pipe frame 1 and the lower filter cover 3 are installed and positioned.
[0036] The left end of the housing 101 and the left end of the lower housing 31 are connected to a wiring hole for the variable frequency motor 108 pipeline to be inserted and placed externally. Through the wiring hole, the variable frequency motor 108 installed inside the device is controlled by an external controller, and the variable frequency motor 108 is electrically connected to an external power supply.
[0037] Work process: This utility model provides a duct-type variable frequency energy-saving fan device for ventilation and noise reduction. The main body of the device has dual ventilation and noise reduction effects of variable frequency noise reduction and sound absorption noise reduction, and the internal components of the main body of the device are easy to disassemble and maintain.
[0038] The variable frequency motor 108 installed inside the device is controlled by an external controller, and the variable frequency motor 108 is electrically connected to an external power supply.
[0039] The housing 101, ring plate 102, hollow frame 103, porous sound-absorbing cotton 104, fork bracket 105, positioning cylinder 106, and insertion cylinder 107 are integrated fasteners. The hollow frame 103 and fork bracket 105 are made of hard alloy. When installing the frequency converter motor 108, T-shaped frame 109, and fan blade shaft 110, the bottom rod of the T-shaped frame 109 is slidably inserted into the insertion cylinder 107. The bottom of the frequency converter motor 108 is in contact with the rubber ring fixedly installed in the top inner groove of the fork bracket 105.
[0040] Subsequently, the pipe frame 1 and the upper filter cover 2 are assembled and combined. The top of the housing 101 is slidably inserted into the upper housing 21 until the silicone ring fixed at the bottom of the outer side of the upper housing 21 is in contact with the silicone ring fixed at the top of the ring plate 102. The top of the hollow frame 103 is in contact with the upper housing 21. At this time, the bottom of the guide 23 is inserted into the semi-circular groove opened in the top inner groove of the fan blade shaft 110, which serves to limit the installation of the fan blade shaft 110. The internal threaded hole of the upper housing 21, the internal threaded hole of the silicone ring fixed at the bottom of the outer side of the upper housing 21, the silicone ring fixed at the top of the ring plate 102, and the internal threaded hole of the ring plate 102 are threaded together by external studs.
[0041] Subsequently, the pipe frame 1 and the lower filter cover 3 are assembled and combined. The outer side of the lower shell 31 is slidably placed against the inner wall of the shell 101. The groove 34 is slidably inserted into the guide groove opened on the right end inner wall of the shell 101. The top of the positioning block 33 is slidably inserted into the square hole opened on the bottom of the positioning cylinder 106. The internal threaded hole of the positioning block 33 and the internal threaded hole of the positioning cylinder 106 are threadedly assembled and set by external studs.
[0042] With the above settings, the main body of the device can install and position the variable frequency motor 108, the T-shaped frame 109 and the fan blade shaft 110. At the same time, the main body of the device facilitates the assembly and combination of the pipe frame 1, the upper filter cover 2 and the lower filter cover 3.
[0043] When the variable frequency motor 108 starts working, it has the characteristics of variable frequency energy saving and noise reduction. In conjunction with the porous structure inside the porous sound-absorbing cotton 104, the porous structure inside the first hard fiber filter plate 22 and the porous structure inside the second hard fiber filter plate 32, the noise generated when the variable frequency motor 108 drives the fan blade shaft 110 to rotate is absorbed and reduced. The main body of the device has the dual ventilation and noise reduction effects of variable frequency noise reduction and sound absorption noise reduction.
[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An energy-saving fan for ventilation and noise reduction, comprising a duct frame (1), an upper filter cover (2), and a lower filter cover (3), characterized in that: The top of the pipe frame (1) is provided with an upper filter cover (2), and the bottom of the pipe frame (1) is provided with a lower filter cover (3). The pipe frame (1) includes a shell (101), a ring plate (102), a hollow frame (103), porous sound-absorbing cotton (104), a fork frame (105), a positioning cylinder (106), an insert cylinder (107), a variable frequency motor (108), a T-shaped frame (109), and a fan blade shaft (110). The outer side of the shell (101) is fixed. A ring plate (102) is fixedly provided. A hollow frame (103) is fixedly provided on the inner wall of the housing (101). A porous sound-absorbing cotton (104) is fixedly provided inside the hollow frame (103). A fork frame (105) is fixedly provided on the inner wall of the hollow frame (103). A positioning cylinder (106) is fixedly provided at the bottom end of the fork frame (105). Two inserts (107) are symmetrically distributed and fixedly provided on the left and right sides of the top end of the fork frame (105). A variable frequency motor (108) is installed on the top of the frame (105). Two T-shaped brackets (109) are symmetrically and fixedly arranged on the left and right sides of the top of the variable frequency motor (108) housing. A fan blade shaft (110) is fixedly installed at the end of the main shaft of the variable frequency motor (108). The upper filter cover (2) includes an upper shell (21), a first hard fiber filter plate (22), and a guide (23). The first hard fiber filter plate (22) is fixedly installed on the inner wall of the upper shell (21). 2) A guide (23) is fixedly installed inside the first hard fiber filter plate (22). The lower filter cover (3) includes a lower shell (31), a second hard fiber filter plate (32), a positioning block (33), and a groove (34). The second hard fiber filter plate (32) is fixedly installed on the inner wall of the lower shell (31). The positioning block (33) is fixedly installed inside the second hard fiber filter plate (32). The groove (34) is fixedly installed on the right end of the lower shell (31).
2. The energy-saving ventilation and noise reduction fan according to claim 1, characterized in that: When the variable frequency motor (108), T-shaped frame (109) and fan blade shaft (110) are installed, the bottom rod of the T-shaped frame (109) is slidably inserted into the inside of the insert (107), and the bottom of the variable frequency motor (108) is in contact with the rubber ring fixedly installed in the top inner groove of the fork (105).
3. The energy-saving fan for ventilation and noise reduction according to claim 1, characterized in that: When the pipe frame (1) and the upper filter cover (2) are assembled, the top of the housing (101) is slidably inserted into the upper shell (21) until the silicone ring fixedly installed at the bottom of the outer side of the upper shell (21) and the silicone ring fixedly installed at the top of the ring plate (102) come into contact. The top of the hollow frame (103) comes into contact with the upper shell (21). The internal threaded hole of the upper shell (21), the internal threaded hole of the silicone ring fixedly installed at the bottom of the outer side of the upper shell (21), the silicone ring fixedly installed at the top of the ring plate (102), and the internal threaded hole of the ring plate (102) are threadedly assembled by external studs.
4. The energy-saving fan for ventilation and noise reduction according to claim 1, characterized in that: The guide (23) is inserted into the semi-circular groove opened in the top inner groove of the fan blade shaft (110).
5. The energy-saving fan for ventilation and noise reduction according to claim 1, characterized in that: When the pipe frame (1) and the lower filter cover (3) are assembled, the outer side of the lower shell (31) is slidably placed against the inner wall of the shell (101), and the groove (34) is slidably inserted into the guide groove opened on the right end inner wall of the shell (101).
6. The energy-saving fan for ventilation and noise reduction according to claim 1, characterized in that: The positioning block (33) is slidably inserted into the square hole at the top and the positioning cylinder (106) at the bottom, and the internal threaded hole of the positioning block (33) and the internal threaded hole of the positioning cylinder (106) are threadedly assembled by external studs.
7. The energy-saving fan for ventilation and noise reduction according to claim 1, characterized in that: The left end of the housing (101) and the left end of the lower housing (31) are connected to a wiring hole for the variable frequency motor (108) pipeline to be inserted and placed externally.