Damping through-flow fan

Abstract

This utility model discloses a vibration-damping cross-flow fan, including a housing, an annular mounting plate, a motor, and a fan impeller. The annular mounting plate has a first mounting hole and a second mounting hole. The annular mounting plate is indirectly fixed to the side of the housing and suspended in the air by a first connecting rod. The motor is suspended and fixed to the annular mounting plate by a second connecting rod passing through a vibration-damping sleeve provided in the second mounting hole. Thus, the vibration of the fan impeller and the motor is first transmitted to the vibration-damping sleeve through the second connecting rod, where it is absorbed and then transmitted to the annular mounting plate. At this point, the vibration is very weak. Then, the absorbed vibration is indirectly transmitted to the housing a second time through the first connecting rod. Since the first connecting rod has a certain length, it also has a certain vibration-damping effect, so the housing is basically not affected by vibration, thus the stability of the housing is stronger.

Description

Technical Field

[0001] This utility model relates to the field of cross-flow fans, and in particular to a vibration-damping cross-flow fan. Background Technology

[0002] A cross-flow fan is a type of fan that uses a motor to drive a rotating impeller to produce airflow. Refer to Chinese patent application number 202410754894.7, entitled "A Cross-flow Fan with an Adjustable Volute Device." Currently, the common structure for this type of fan is to directly fix the motor to the casing and connect the motor's output shaft to the impeller. However, in actual use, both the impeller and the motor will generate some slight vibration. Because the motor is directly fixed to the casing, the casing will also vibrate. Therefore, some customers have reported that the casing produces abnormal noise due to vibration, and the vibration can cause the first bolt on the casing to loosen to some extent after prolonged use. Utility Model Content

[0003] To address the aforementioned problems, the purpose of this utility model is to provide a vibration-damping cross-flow fan.

[0004] The technical solution adopted by this utility model to solve the problem is: a vibration-damping cross-flow fan, comprising: The housing has an internal cavity, an air inlet and an air outlet connected to the cavity on its outer periphery, and a through hole connected to the cavity on one side of the housing. An annular mounting plate has a plurality of first mounting holes and a plurality of second mounting holes evenly arranged along the annular ring, wherein the first mounting holes and the second mounting holes are arranged at intervals, a shock-absorbing sleeve is fixedly inserted in the second mounting hole, the shock-absorbing sleeve has a through hole in the middle, the annular mounting plate is disposed on the outer side of the side of the housing with the through hole, and a first connecting rod is disposed on the first mounting hole and fixedly connected to the housing, so that the annular mounting plate is suspended on the outer side of the housing; The motor is located on the other side of the annular mounting plate. Several second connecting rods facing the annular mounting plate are fixedly arranged on the outer periphery of the motor. The second connecting rod includes a positioning section at the front and a threaded section at the rear. The threaded section is smaller than the end of the positioning section. The threaded section is inserted into the shock-absorbing sleeve through a through hole and the end face of the positioning section abuts against the outer end face of the shock-absorbing sleeve. A locking nut is provided on the inner side of the annular mounting plate and screwed onto the threaded section and abuts against the inner end face of the shock-absorbing sleeve. A wind turbine is disposed within the cavity, and the output shaft of the motor passes through a through hole and is connected to the wind turbine.

[0005] As a further improvement to the above technical solution, the end of the positioning section includes a first gasket, which abuts against the outer end face of the shock absorber sleeve, and a second gasket is provided between the locking nut and the inner end face of the shock absorber sleeve.

[0006] As a further improvement to the above technical solution, the second connecting rod includes a first bolt in the middle and a sleeve sleeved around the outer periphery of the first bolt. A fixing flange is provided on the outer periphery of the motor, and a fixing hole is provided on the fixing flange. The first bolt passes through the fixing hole and abuts the head of the first bolt against the outer surface of the fixing flange. The two ends of the sleeve abut against the inner surface of the fixing flange and the surface of the first washer, respectively. The sleeve and the first washer form the positioning section. The portion of the rear part of the first bolt extending out of the outer end of the sleeve forms the threaded section.

[0007] As a further improvement to the above technical solution, an insertion section is also provided on the inner side of the second gasket, and the insertion section is inserted into the perforation along the end of the shock-absorbing sleeve.

[0008] As a further improvement to the above technical solution, the shock-absorbing sleeve includes a front section, a middle section and a rear section, the perforation passes through the center of the front section, the middle section and the rear section, the diameter of the front section and the rear section is larger than that of the middle section, the middle section is inserted into the second mounting hole and is interference-fitted with the second mounting hole, and the rear end face of the front section and the front end face of the rear section respectively abut against the two end faces of the annular mounting plate.

[0009] As a further improvement to the above technical solution, a mounting shell is detachably provided on one side of the housing with the through hole, and the first connecting rod is detachably fixed to the mounting shell.

[0010] As a further improvement to the above technical solution, a shock-absorbing sleeve is also provided on the first mounting hole.

[0011] The beneficial effects of this utility model are as follows: By setting a central annular mounting plate, which is indirectly fixed to the side of the housing and suspended in the air via a first connecting rod, the motor is suspended and fixed to the annular mounting plate via a second connecting rod passing through a shock-absorbing sleeve set in a second mounting hole. This allows the vibration of the wind turbine and the motor to be transmitted to the shock-absorbing sleeve via the second connecting rod, absorbed by the shock-absorbing sleeve, and then transmitted to the annular mounting plate. At this point, the vibration is already very weak. Then, the absorbed and damped vibration is transmitted indirectly to the housing a second time via the first connecting rod. Since the first connecting rod has a certain length, it also has a certain damping effect, so the housing is basically not affected by vibration, thus the stability of the housing is stronger. Attached Figure Description

[0012] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0013] Figure 1 This is a schematic diagram of a preferred embodiment of the present invention; Figure 2 for Figure 1 A magnified schematic diagram of the structure at point A. Detailed Implementation

[0014] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0015] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional 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 on this utility model.

[0016] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0017] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0018] Reference Figures 1 to 2 A vibration-damping cross-flow fan, comprising: The housing 10 has an interior cavity, an air inlet and an air outlet connected to the cavity on the outer periphery of the housing 10, and a through hole connected to the cavity on one side of the housing 10. An annular mounting plate 20 has a plurality of first mounting holes and a plurality of second mounting holes 21 evenly arranged along the annular ring. The first mounting holes and second mounting holes 21 are arranged at intervals. A shock-absorbing sleeve 50 is fixedly inserted into the second mounting hole 21. A through hole 501 is provided in the middle of the shock-absorbing sleeve 50. The annular mounting plate 20 is located on the outer side of the side of the housing 10 with the through hole. A first connecting rod 60 is provided on the first mounting hole and is fixedly connected to the housing 10, so that the annular mounting plate 20 is suspended outside the housing 10. The motor 30 is located on the other side of the annular mounting plate 20. Several second connecting rods 70 facing the annular mounting plate 20 are fixedly provided on the outer periphery of the motor 30. The second connecting rod 70 includes a positioning section of the front section 51 and a threaded section of the rear section 53. The threaded section is smaller than the end of the positioning section. The threaded section is inserted into the shock-absorbing sleeve 50 through the through hole 501 and the end face of the positioning section abuts against the outer end face of the shock-absorbing sleeve 50. A locking nut 71 is provided on the inner side of the annular mounting plate 20, which is screwed onto the threaded section and abuts against the inner end face of the shock-absorbing sleeve 50. The impeller 40 is disposed in the cavity, and the output shaft of the motor 30 passes through the through hole and is connected to the impeller 40.

[0019] By setting a central annular mounting plate 20, which is indirectly fixed to the side of the housing 10 and suspended in the air via a first connecting rod 60, the motor 30 is suspended and fixed to the annular mounting plate 20 via a second connecting rod 70 passing through a shock-absorbing sleeve 50 set in the second mounting hole 21. Thus, the vibration of the impeller 40 and the motor 30 is first transmitted to the shock-absorbing sleeve 50 via the second connecting rod 70, absorbed by the shock-absorbing sleeve 50, and then transmitted to the annular mounting plate 20. At this point, the vibration is very weak. Then, the vibration after absorption and damping is indirectly transmitted to the housing 10 again via the first connecting rod 60. Since the first connecting rod 60 has a certain length, it also has a certain damping effect, so that the housing 10 is basically not affected by vibration, thus the stability of the housing 10 is stronger.

[0020] To further optimize the positioning section so that the end of the positioning section and the locking nut 71 can better abut against the end face of the shock-absorbing sleeve 50, the end of the positioning section preferably includes a first washer 72, which abuts against the outer end face of the shock-absorbing sleeve 50, and a second washer 73 is provided between the locking nut 71 and the inner end face of the shock-absorbing sleeve 50.

[0021] Further optimization: In this solution, the second connecting rod 70 can be integrally formed. Considering the complexity of processing, and to simplify the process, the second connecting rod 70 preferably includes a first bolt 701 in the middle and a sleeve 702 sleeved around the outer periphery of the first bolt 701. The motor 30 has a fixing flange 31 on its outer periphery, and a fixing hole is provided on the fixing flange 31. The first bolt 701 passes through the fixing hole and abuts against the outer surface of the fixing flange 31. The two ends of the sleeve 702 abut against the inner surface of the fixing flange 31 and the surface of the first washer 72, respectively. The sleeve 702 and the first washer 72 form the positioning section. The portion of the first bolt 701 extending out of the outer end of the sleeve 702 forms the threaded section.

[0022] In a further optimization, the second gasket 73 is preferably provided with an insertion section 731 on its inner side. The insertion section 731 is inserted into the perforation 501 along the end of the shock-absorbing sleeve 50, so that the second gasket 73 can be pre-installed on the shock-absorbing sleeve 50, reducing the installation process and improving production efficiency.

[0023] In this design, the shock absorber sleeve 50 can be integrally formed on the second mounting hole 21, so that the shock absorber sleeve 50 will not be displaced from the second mounting hole 21. Considering the convenience of production, it is preferable that the shock absorber sleeve 50 is an independent part, and the shock absorber sleeve 50 includes a front section 51, a middle section 52 and a rear section 53. The through hole 501 passes through the center of the front section 51, the middle section 52 and the rear section 53. The diameters of the front section 51 and the rear section 53 are both larger than that of the middle section 52. The middle section 52 is inserted into the second mounting hole 21 and is press-fitted with the second mounting hole 21. The rear end face of the front section 51 and the front end face of the rear section 53 respectively abut against the two end faces of the annular mounting plate 20. During installation, since the threaded section has not yet been inserted into the through hole 501, the shock absorber sleeve 50 can deform through the space of the through hole 501 and squeeze into the second mounting hole 21 to complete the installation.

[0024] For ease of installation, it is preferable that a mounting shell 11 is detachably mounted on the side of the housing 10 with the through hole. The first connecting rod 60 is detachably fixed to the mounting shell 11. During production, the motor 30 and the annular mounting plate 20 can be fixed to the mounting shell 11 first, and then the mounting shell 11 can be fixed to the side of the housing 10. The two processes can be carried out simultaneously on two production lines, which shortens the production time.

[0025] As a further improvement, it is preferable to also provide a shock-absorbing sleeve 50 on the first mounting hole to further reduce the transmission of vibration.

[0026] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A damped through-flow fan, characterized in that include: The housing (10) has a cavity inside, and an air inlet and an air outlet connected to the cavity are formed on the outer periphery of the housing (10). A through hole connected to the cavity is provided on one side of the housing (10). The annular mounting plate (20) has a plurality of first mounting holes and a plurality of second mounting holes (21) evenly arranged along the annular ring. The first mounting holes and the second mounting holes (21) are arranged at intervals. A shock-absorbing sleeve (50) is fixedly inserted in the second mounting hole (21). A through hole (501) is provided in the middle of the shock-absorbing sleeve (50). The annular mounting plate (20) is located on the outer side of the side of the housing (10) with the through hole. A first connecting rod (60) is provided on the first mounting hole and is fixedly connected to the housing (10) so that the annular mounting plate (20) is suspended outside the housing (10). The motor (30) is located on the other side of the annular mounting plate (20). The outer periphery of the motor (30) is fixedly provided with several second connecting rods (70) facing the annular mounting plate (20). The second connecting rod (70) includes a positioning section of the front section (51) and a threaded section of the rear section (53). The threaded section is smaller than the end of the positioning section. The threaded section is inserted into the shock-absorbing sleeve (50) through a through hole (501) and the end face of the positioning section abuts against the outer end face of the shock-absorbing sleeve (50). The inner side of the annular mounting plate (20) is provided with a locking nut (71) screwed onto the threaded section and abutting against the inner end face of the shock-absorbing sleeve (50). The impeller (40) is disposed in the cavity, and the output shaft of the motor (30) is connected to the impeller (40) through the through hole.

2. The vibration-damping cross-flow fan as described in claim 1, characterized in that: The end of the positioning section includes a first washer (72), which abuts against the outer end face of the shock-absorbing sleeve (50), and a second washer (73) is provided between the locking nut (71) and the inner end face of the shock-absorbing sleeve (50).

3. A vibration-damping cross-flow fan as described in claim 2, characterized in that: The second connecting rod (70) includes a first bolt (701) in the middle and a sleeve (702) sleeved on the outer periphery of the first bolt (701). The motor (30) has a fixing flange (31) on its outer periphery. The fixing flange (31) has a fixing hole. The first bolt (701) passes through the fixing hole and the head of the first bolt (701) abuts against the outer surface of the fixing flange (31). The two ends of the sleeve (702) abut against the inner surface of the fixing flange (31) and the surface of the first gasket (72) respectively. The sleeve (702) and the first gasket (72) form the positioning section. The part of the rear of the first bolt (701) that extends out of the outer end of the sleeve (702) forms the threaded section.

4. A vibration-damping cross-flow fan as described in claim 2, characterized in that: The second gasket (73) is also provided with an insertion section (731) on its inner side, which is inserted into the perforation (501) along the end of the shock-absorbing sleeve (50).

5. A vibration-damping cross-flow fan as described in claim 1, characterized in that: The shock-absorbing sleeve (50) includes a front section (51), a middle section (52) and a rear section (53). The perforation (501) passes through the center of the front section (51), the middle section (52) and the rear section (53). The diameters of the front section (51) and the rear section (53) are both larger than that of the middle section (52). The middle section (52) is inserted into the second mounting hole (21) and is press-fitted with the second mounting hole (21). The rear end face of the front section (51) and the front end face of the rear section (53) abut against the two end faces of the annular mounting plate (20) respectively.

6. A vibration-damping cross-flow fan as described in claim 1, characterized in that: The housing (10) has a through hole on one side where a mounting shell (11) can be detachably mounted, and the first connecting rod (60) can be detachably fixed to the mounting shell (11).

7. A vibration-damping cross-flow fan as described in claim 1, characterized in that: A shock-absorbing sleeve (50) is also provided on the first mounting hole.

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