Mute test box for air blower
By designing a blower silent test box, the closed test chamber and sound insulation cotton are used to reduce noise, the problem of high noise test in the prior art is solved, which significantly reduces noise pollution and protects the hearing of testers.
Patent Information
- Application Number
- CN202421684888.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2034-07-16
AI Technical Summary
In the prior art, when testing vehicle-mounted blowers, the blades of the blowers are exposed to the air, causing high noise, which harms the hearing of the tester and causes noise pollution.
A blower silent test box is designed. The box is equipped with a closed test room, sound insulation cotton and a fixing plate. There are placement ports and fixing clips on the fixing plate to fix the blower and form a closed environment to reduce noise.
Through the design of the closed test chamber and sound insulation cotton, the noise of the blower is significantly reduced, with decibels dropping from 87 to 32, and noise reduction is about 60%, reducing noise pollution and protecting the hearing of the tester.
Smart Images
Figure CN222774035U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of small vehicle-mounted blower testing, in particular to a blower silent testing box. Background Art
[0002] The blower operates eccentrically with the rotor offset in the cylinder, and the volume changes between the blades in the rotor slots to inhale, compress, and expel air. It mainly includes the blower body and the machine feet used to support the blower body. The blower body has a built-in impeller. At the current stage, when testers test the related functions of the vehicle-mounted blower, they directly connect the blower to the test machine. The blades of the blower are exposed to the air. When running, the noise caused by the blades driving the air is very loud, which poses a risk of hearing damage to the testers and causes great noise pollution. Utility Model Content
[0003] Purpose of the utility model: In order to overcome the defects of the prior art, the utility model provides a blower silent test box with sealing and sound absorption functions.
[0004] The technical solution of the utility model: a blower silent test box, which is composed of a box and an openable and closable box cover to form a closed test room for accommodating a vehicle-mounted blower, the box having a power interface, and the test room is provided with sound insulation cotton and a fixing plate for installing the blower, the fixing plate having a blower placement opening in the middle part, and a plurality of fixing clips distributed along the circumference of the placement opening, and the fixing clips can fix the machine feet of the blower.
[0005] By adopting the above technical solution, the vehicle-mounted blower to be tested is placed in the test box during use. Specifically, the blower is placed at the placement opening, and the blower feet are fixed by fixing clips. Then, the box cover is closed, and the box cover and the box box form a closed test room for accommodating the vehicle-mounted blower. After that, a plug is plugged in at the power interface to power on and test the blower.
[0006] The closed test room has a significant effect on reducing the noise of the blower, and there is also sound insulation cotton in the test room to further reduce the noise. The decibel of the blower before using this product is 87, and the decibel after using the silent test box of this product is 32. It can reduce the noise volume by about 60%, greatly reduce noise pollution, and protect testers from hearing damage.
[0007] Preferably, the fixing clip is connected to the fixing plate by a locking pin, the fixing clip has a long slot, the locking pin is relatively adjustable and penetrates the long slot, so that the fixing clip can slide horizontally close to or away from the center of the placement opening, and the locking head on the locking pin is pressed on the fixing clip to achieve positioning. The fixing clip can slide horizontally on the fixing plate to close to or away from the center of the placement opening, so as to be suitable for clamping blowers of different specifications.
[0008] Preferably, the plate surface of the fixing plate is also provided with a plurality of mounting holes, and the locking pins are detachably mounted in the mounting holes. By installing the locking pins in different mounting holes, the mounting position of the fixing clip on the plate surface can be adjusted arbitrarily.
[0009] Preferably, there are two types of clamps for the fixing clamp. The first type of clamp has a clamp groove at the inner end, and the clamp groove can be used for the foot of the blower to be inserted; the second type of clamp has a mounting hole, and is fixed by screws that pass through the foot of the blower and the mounting hole in sequence.
[0010] Preferably, the fixing plate is located in the box, and the box also has a pillar supported below the fixing plate, and the outer edge of the fixing plate is installed on the pillar by screws. The fixing plate is raised to facilitate the blower body to enter the box through the blower placement port.
[0011] Preferably, the sound insulation cotton is arranged on the inner surface of the box cover.
[0012] Preferably, the box cover is hinged to the rear end of the box, and the front part is locked by a lock hook to prevent opening. Locking by the lock hook can prevent accidental opening during testing and can also facilitate transportation.
[0013] Preferably, a pair of lock hooks are provided on the box, and the pair of lock hooks are respectively arranged on both sides of the front of the box, and the hook heads are arranged opposite to each other. After the box lid is closed, the hook heads of the pair of lock hooks respectively hook the upper surfaces of the two side cover edges of the box lid, thereby limiting the box lid from rotating upward to open.
[0014] Preferably, it also includes a handle, which is rotatably arranged on the front end surface of the box. The handle can facilitate the test box to be lifted by hand; and the handle can also be rotatably stored on the front end surface of the box. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a structural diagram of a specific embodiment of the utility model after the box cover is closed;
[0016] Figure 2 This is a structural diagram of a specific embodiment of the utility model after the box cover is opened;
[0017] Figure 3 This is a structural diagram of a fixed plate in a specific embodiment of the utility model;
[0018] Figure 4 for Figure 1 A partial enlarged view of part I;
[0019] Figure 5 for Figure 3 A partial enlarged view of part II.
[0020] In the figure: box 1, box cover 2, cover edge 21, power interface A, sound insulation cotton 3, fixing plate 4, blower placement opening 41, fixing clip 42, long groove 421, mounting hole A43, clamping groove 42a, mounting hole B42b, pillar 11, locking hook 5, hook head 51, handle 6. DETAILED DESCRIPTION
[0021] The technical scheme in this embodiment will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] like Figure 1-5 As shown, a blower silent test box of the utility model is composed of a square box 1 and an openable box cover 2 to form a closed test room for accommodating a vehicle-mounted blower. The box 1 is provided with a power interface A, and sound insulation cotton 3 and a fixing plate 4 for installing the blower are arranged in the test room. The fixing plate 4 has a blower placement opening 41 in the middle part, and a plurality of fixing clips 42 are distributed along the circumference of the placement opening 41, and the fixing clips 42 can fix the machine feet of the blower.
[0023] Specifically, the fixing clip 42 is connected to the fixing plate 4 by a locking pin. The fixing clip 42 has a long slot 421. The locking pin 32 is relatively adjustable and penetrates the long slot 421, so that the fixing clip 42 can slide horizontally close to or away from the center of the placement port 421, and is also pressed on the fixing clip 42 by the locking head on the locking pin to achieve positioning. There are also a number of mounting holes A43 distributed on the plate surface of the fixing plate 4, and the locking pin is detachably installed in the mounting hole A43. The locking pin 32 is a screw, and the rod of the screw passes through the long slot and the mounting hole A. After the screw is tightened, its nail head presses on the fixing clip to achieve positioning. After the screw is loosened, the fixing clip 42 can slide horizontally. The screw is threadedly installed in the mounting hole A or connected to the nut after passing through the mounting hole A. The nut can also be used as a locking head to press the fixing clip 42.
[0024] Specifically, there are two types of clamps for the fixing clamp 42. The first type of clamp has a clamp groove 42a at the inner end, and the clamp groove 42a can be used for the foot of the blower to be inserted; the second type of clamp has a mounting hole B42b, and is fixed by screws that pass through the foot of the blower and the mounting hole B42b in sequence.
[0025] Specifically, the fixing plate 4 is located in the box 1, and the box 1 also has a support 11 supported below the fixing plate 4, and the outer edge of the fixing plate 4 is screwed to the support 11. The support 11 is integrally arranged on the box 1 or fixedly connected by screws.
[0026] Specifically, the sound insulation cotton 3 is arranged on the inner surface of the box cover 2.
[0027] Specifically, the box cover 2 is hinged to the rear end of the box 1, and the front is locked by a lock hook 5 to prevent opening. A pair of lock hooks 5 are provided on the box 1, and the pair of lock hooks 5 are provided on both sides of the front of the box 1, and the hook heads 51 are arranged opposite to each other. After the box cover 2 is closed, the hook heads 51 of the pair of lock hooks 5 respectively hook the upper surfaces of the cover edges 21 of the two sides of the box cover 2, thereby limiting the box cover 2 from rotating upward to open. Alternatively, a lock hook is provided at the front end of the box 1, and the lock hook hooks the upper surface of the cover edge 21 of the front end of the box cover 2. The lower end of the lock hook is fixed or integrally connected to the box, the hook head is located at the upper end of the lock hook, and the upper surface of the hook head is an inclined surface. When the box cover 2 is closed downward, the cover edges 21 on both sides of the box cover 2 first contact the inclined surfaces of the hook heads, and can squeeze the hook heads of a pair of lock hooks outward. After the cover edge 21 passes the hook heads, the squeezed and deformed lock hooks return to their original positions, so that the hook heads will hook the upper surface of the cover edge 21 to lock it; or the lower end of the lock hook is hinged on the box, and after the lock hook is rotated outward to open it, the box cover 2 can be opened upward, and after the box cover 2 is closed downward, the lock hook is rotated upward to close it: specifically, the hook head of the lock hook is turned toward the cover edge 21 of the box cover 2, and hooked on the upper surface of the cover edge 21 to lock it.
[0028] Specifically, it also includes a handle 6, which is rotatably arranged on the front end surface of the box 1.
[0029] When this product is in use, the vehicle-mounted blower to be tested is installed in the test box, specifically, the blower is placed at the placement opening 41 of the fixing plate 4, and the installation position of the fixing clip 4 on the plate surface can be arbitrarily adjusted by installing the locking pins into different installation holes A43; the fixing clip 42 slides horizontally on the fixing plate 4 to approach or move away from the center of the placement opening 41, so that it is suitable for clamping blowers of different specifications, and the fixing clips of the two types of chucks are used to fix the machine feet of different blowers, specifically, the clamping groove 42a of the first type of chuck is used for inserting the machine foot of the blower to achieve positioning, or the mounting hole B42b of the second type of chuck is penetrated by a screw to achieve installation connection with the machine foot of the blower; then the box cover 2 is covered, and it and the box box 1 form a closed test chamber for accommodating the vehicle-mounted blower, and the box cover 2 is locked by the lock hook 5 to prevent it from being accidentally opened during the test, and then the plug is plugged in at the power interface A to power on and test the blower. The test machine can be installed inside the test box or outside, and the blower is running inside the box during testing.
[0030] The closed test room has a significant effect on reducing the noise of the blower, and there is also sound insulation cotton in the test room to further reduce the noise. The decibel of the blower before using this product is 87, and the decibel after using the silent test box of this product is 32. It can reduce the noise volume by about 60%, greatly reduce noise pollution, and protect testers from hearing damage.
[0031] It should be noted that in the description of the present invention, all directional indications (such as up, down, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0032] In addition, the descriptions of "A", "B", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. In the description of the present invention, the meaning of "several" is at least two, such as two, three, etc., unless otherwise clearly and specifically limited.
[0033] In the description of the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "couple", "connect", and "fix" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
Claims
1. A blower silent test box, characterized in that: A closed test chamber for accommodating a vehicle-mounted blower can be formed by a box (1) and an openable box cover (2). The box (1) is provided with a power interface (A). Sound insulation cotton (3) and a fixing plate (4) for installing the blower are provided in the test chamber. The fixing plate (4) has a blower placement opening (41) in the middle, and a plurality of fixing clips (42) are distributed along the circumference of the placement opening (41). The fixing clips (42) can fix the machine feet of the blower.
2. The blower silent test box according to claim 1, characterized in that: The fixing clip (42) is connected to the fixing plate (4) by a locking pin. The fixing clip (42) has a long slot (421). The locking pin (32) is relatively adjustable and penetrates the long slot (421), so that the fixing clip (42) can slide horizontally toward or away from the center of the placement opening (41). The locking head on the locking pin is pressed tightly on the fixing clip (42) to achieve positioning.
3. The blower silent test box according to claim 2, characterized in that: The fixing plate (4) is also provided with a plurality of mounting holes A (43) on its surface, and locking pins are detachably mounted in the mounting holes A (43).
4. A blower silent test box according to claim 1, 2 or 3, characterized in that: There are two types of clamps for the fixing clamp (42). The first type of clamp has a clamp groove (42a) at the inner end, and the clamp groove (42a) can be inserted into the foot of the blower; the second type of clamp has a mounting hole B (42b) and is fixed by screws that penetrate the foot of the blower and the mounting hole B (42b) in sequence.
5. A blower silent test box according to claim 1, 2 or 3, characterized in that: The fixing plate (4) is located in the box (1), and the box (1) is also provided with a pillar (11) supported below the fixing plate (4), and the outer edge of the fixing plate (4) is mounted on the pillar (11) by screws.
6. A blower silent test box according to claim 1, 2 or 3, characterized in that: The sound insulation cotton (3) is arranged on the inner surface of the box cover (2).
7. A blower silent test box according to claim 1, 2 or 3, characterized in that: The box cover (2) is hinged to the rear end of the box (1), and the front is locked by a lock hook (5) to prevent opening.
8. The blower silent test box according to claim 7, characterized in that: A pair of lock hooks (5) are provided on the box (1). The pair of lock hooks (5) are respectively arranged on both sides of the front part of the box (1), and the hook heads (51) are arranged opposite to each other. After the box cover (2) is closed, the hook heads (51) of the pair of lock hooks (5) respectively hook the upper surfaces of the two side cover edges (21) of the box cover (2), thereby limiting the box cover (2) from rotating upward to open.
9. The blower silent test box according to claim 7, characterized in that: It also comprises a handle (6), which is rotatably arranged on the front end surface of the box (1).