Reinforcing device
By clamping the fan motor suspension plane with a strut-like reinforcement device and adjusting its length, the resonance problem when fans are arranged in parallel is solved, thereby improving fan stiffness and extending its lifespan, and adapting to various air conditioning unit designs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-15
- Publication Date
- 2026-03-20
AI Technical Summary
When multiple fans are arranged in parallel, the resonant frequency of the mechanical structure may overlap with the fan speed range, causing the fans to fail prematurely. Furthermore, the resonant frequencies of the air conditioning unit equipment vary greatly, making it difficult to design uniformly.
A strut-like reinforcement device is used, which is clamped and locked onto the plane at the height of the fan motor. Combined with a tolerance compensation device to adjust the length, the fan rigidity is improved, and the resonant frequency is prevented from entering the fan speed range.
It effectively shifts the fan's resonant frequency to a higher speed range, improving fan rigidity, extending fan lifespan, and adapting to different individual spacing without requiring complex tools for installation.
Smart Images
Figure CN121701513A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The invention relates to a stiffening device for stiffening fans arranged in parallel, having a base body which is in particular rod-shaped and / or beam-shaped and / or strut-shaped. BACKGROUND
[0002] When a plurality of fans arranged in parallel are operated, for example in air conditioning box devices (air handling units, AHU), depending on the mechanical construction, the resonance frequencies of the mechanical construction can lie in the range of the rotational speeds of the fans. Due to the suspension of the fans, for example by means of fixing pins, an easily excited, vibratable structure is formed, which together with the mechanical fixing structure leads to resonance frequencies. These resonance frequencies are excited by the unbalance of one or more fans and can lead to an overloading of the individual fans with vibrations. This leads to an early failure of the fans.
[0003] Furthermore, air conditioning box devices are usually designed depending on the specific application scenario. In this way, the dimensions and thus the resonance frequencies differ greatly. SUMMARY
[0004] The invention thus aims to overcome the above-mentioned disadvantages and to provide a stiffening device for stiffening fans arranged in parallel, which can be adapted to the individual spacing between the fans and is easy to retrofit without complex auxiliary tools.
[0005] This task is solved by the feature combination described in patent claim 1.
[0006] The basic idea of the invention is to shift the resonance frequencies of the fans arranged in parallel to a higher rotational speed range, the aim being to shift the resonance frequencies out of the predetermined rotational speed range of the fans. This is achieved by a stiffening device, which is preferably strut-shaped, arranged on the fan receiving structure, preferably spider-shaped, preferably in the plane of the height of the suspension of the fan motor, which achieves universality by simple fastening, in particular clamping and / or locking, and by length adjustment of the tolerance compensation device. The stiffening device is arranged in a strut-like manner between two fans.
[0007] It is therefore proposed according to the application a reinforcement device for reinforcing fans arranged in parallel, having a base body which is in particular rod-shaped and / or beam-shaped and / or strut-shaped. Furthermore, a first fastening element is configured on the base body for fastening to a receiving structure of one of the fans, preferably of a fan motor, in particular to a bracket, a housing, a beam, a frame and / or a receiving clamp. In addition, a second fastening element is configured on the base body for fastening to a receiving structure of another directly adjacently arranged fan, preferably of a fan motor, in particular to a bracket, a housing, a beam, a frame and / or a receiving clamp. Furthermore, the base body has a tolerance compensation device for stepless adjustment of the length extension of the reinforcement device, so that in the installed state the stiffness of the fans connected by the reinforcement device can be increased.
[0008] It is provided in a preferred embodiment variant that the first fastening element is formed at a first longitudinal end of the base body and / or the second fastening element is formed at a second longitudinal end of the base body.
[0009] Preferably, the reinforcement device is configured such that the tolerance compensation device is a threaded spindle or in particular a fixable telescopic mechanism or in particular a fixable slide rail system.
[0010] In one embodiment of the application, the base body is divided into a first base body part and a second base body part. Therein, the first base body part and the second base body part have at least in the connection region a thread and / or are configured in a bolt thread shape or screw shape. Furthermore, the tolerance compensation device is a screw nut, in particular a long nut, and / or is a sleeve with an internal thread, which connects the first base body part and the second base body part to one another.
[0011] Furthermore, the following embodiment is advantageous, wherein the first fastening element and / or the second fastening element is a latching device, in particular a carabiner or a clip or a clamp or a clamp.
[0012] It is also proposed according to the application a system having at least two fans arranged in parallel, wherein at least between the two fans arranged in parallel a reinforcement device according to the aforementioned disclosure is provided, so that the stiffness of the fans connected by the respective reinforcement device is increased.
[0013] In an advantageous embodiment, a plurality of fans arranged in parallel is provided and at least one reinforcement device according to the aforementioned disclosure is arranged between adjacent fans, respectively.
[0014] It is provided according to the application in another preferred variant that the reinforcement devices are arranged parallel to the longitudinal direction of the fans, preferably parallel to the longitudinal direction of the fans and / or are arranged offset to one another.
[0015] According to the application, in alternative embodiments it is provided that the stiffening devices are arranged on adjacent fans with positive and negative slopes alternating in the longitudinal direction of the fans.
[0016] In one embodiment variant, the system according to the application is configured such that at least at one fan located at one end of the sequence of fans arranged in parallel, a stiffening device according to the aforementioned disclosure is arranged, which is fastened to the wall and / or to the beam and / or to the mounting surface of the fan by means of a second fastening element.
[0017] The features disclosed above can be combined as desired, as long as this is technically possible and does not contradict one another. BRIEF DESCRIPTION OF DRAWINGS
[0018] Further advantageous embodiments of the application are described in other technical solutions or are explained in more detail below with reference to the description of the preferred embodiment of the application, with reference to the drawings. Among others:
[0019] Figure 1 is a perspective view of a stiffening device;
[0020] Figure 2 is a schematic view of a system;
[0021] Figure 3 is a schematic view of another system.
[0022] The drawings are schematic representations. The same reference numerals in the figures denote the same functional and / or structural features. DETAILED DESCRIPTION
[0023] In Figure 1 a perspective view of a stiffening device 10 for stiffening fans 100 arranged in parallel is shown, which has a rod-shaped base body 1.
[0024] On the base body 1, a first fastening element 2 is formed for fastening to a receiving structure 15 of one of the fans 100. Furthermore, on the base body 1, a second fastening element 3 is formed for fastening to a receiving structure 15 of another directly adjacently arranged fan 100. The first fastening element 2 and the second fastening element 3 are each a latching device, in particular a carabiner. Furthermore, the first fastening element 2 is formed at a first longitudinal end of the base body 1 and the second fastening element 3 is formed at a second longitudinal end of the base body 1.
[0025] Furthermore, the base body 1 has a tolerance compensation device 4 for stepless adjustment of the length extension of the stiffening device 10, so that in the installed state the stiffness of the fans 100 connected by the stiffening device 10 can be increased.
[0026] Furthermore, the base body 1 is divided into a first base body part 11 and a second base body part 12. Therein, the first base body part 11 and the second base body part 12 have at least in the connection region a thread 13 and / or are configured as a bolt thread or as a screw thread. Therein, the tolerance compensation device 4 is a screw nut, in particular a long screw nut, which connects the first base body part 11 and the second base body part 12 to each other.
[0027] Figure 2 A schematic representation of a system with three fans 100 arranged in parallel is shown, wherein between adjacent fans of the fans 100 arranged in parallel a reinforcement device 10 according to the preceding description is arranged, so that the stiffness of the fans 100 connected by the respective reinforcement device 10 is increased.
[0028] Therein, the reinforcement devices 10 are arranged in the longitudinal direction of the fans 100 parallel to the longitudinal direction of the fans 100 and offset to each other.
[0029] Furthermore, on the two fans 100 located at the ends of the sequence of fans 100 arranged in parallel, a reinforcement device 10 according to the preceding description is arranged, which is fastened by a second fastening element 3 on a wall and / or a beam and / or a mounting surface of the fan 100.
[0030] A schematic representation of another system with three fans 100 arranged in parallel is shown in Figure 3 , wherein between adjacent fans of the fans 100 arranged in parallel a reinforcement device 10 according to the preceding description is arranged, so that the stiffness of the fans 100 connected by the respective reinforcement device 10 is increased. Due to Figure 3 the other system shown essentially has the features of the system shown in Figure 2 . In the following only different features are discussed.
[0031] According to Figure 3 , the reinforcement devices 10 are arranged on adjacent fans 100 in the longitudinal direction of the fans 100 with positive and negative slopes alternating.
[0032] The application is not limited to the preferred embodiments described above. Rather, the application can also have numerous variants, which also utilize the embodiments described above, which are essentially different from the application.
Claims
1. A reinforcement device (10) for reinforcing parallel-connected fans (100) and having a base body (1), in, A first fastening element (2) is formed on the base body (1) for fastening to the receiving structure (15) of one of the fans (100). A second fastening element (3) is formed on the base body (1) for fastening to the housing structure (15) of another directly adjacent fan (100). The base body (1) has a tolerance compensation device (4) for steplessly adjusting the length extension of the reinforcement device (10) so that the stiffness of the fan (100) connected through the reinforcement device (10) can be improved in the installed state.
2. The reinforcement device (10) according to claim 1, wherein, The first fastening element (2) is formed at the first longitudinal end of the base body (1), and / or the second fastening element (3) is formed at the second longitudinal end of the base body (1).
3. The reinforcement device (10) according to claim 1 or 2, wherein, The tolerance compensation device (4) is a threaded screw or, in particular, a fixed telescopic mechanism or, in particular, a fixed slide rail system.
4. The reinforcement device (10) according to claim 1 or 2, wherein, The base body (1) is divided into a first base body part (11) and a second base body part (12), wherein the first base body part (11) and / or the second base body part (12) have threads (13) and / or are configured as bolt threads or screws at least in the connection area, wherein the tolerance compensation device (4) is a screw nut, particularly a long nut, and / or a sleeve with internal threads, which connects the first base body part (11) and the second base body part (12) to each other.
5. The reinforcement device (10) according to any one of the preceding claims, wherein, The first fastening element (2) and / or the second fastening element (3) are locking devices, particularly hooks, clamps, calipers or clamps.
6. A system having at least two fans (100) arranged in parallel, wherein, At least one of the parallel-arranged fans (10) is provided with a reinforcement device (1) according to any one of the preceding claims, such that the stiffness of the fan (100) connected by the respective reinforcement device (10) is improved.
7. The system according to claim 6, wherein a plurality of fans (100) are arranged in parallel, and at least one reinforcement device (10) according to claims 1 to 5 is arranged between adjacent fans (100).
8. The system according to claim 6 or 7, wherein, The reinforcement device (10) is arranged parallel to the longitudinal direction of the fan (100), preferably parallel to the longitudinal direction of the fan (100) and / or staggered from each other.
9. The system according to claim 6 or 7, wherein, The reinforcement device (10) is arranged along the longitudinal direction of the fan (100) on adjacent fans (100) with alternating positive and negative slopes.
10. The system according to any one of claims 6 to 9, wherein, At least one of the fans (100) located at one end of the sequence of the parallel-arranged fans (100) is provided with a reinforcement device (10) according to any one of claims 1 to 5, the reinforcement device being fastened to the wall and / or beam and / or mounting surface of the fan (100) by the second fastening element (3).