Spherical joint with noise reduction function and shower system
By setting multiple water flow holes inside the ball joint, and combining the principles of fluid mechanics and acoustic interference, the water flow hole design is optimized, solving the problems of noise transmission and clogging in shower equipment, achieving efficient noise reduction, suitable for various shower devices, and meeting EU standards.
Patent Information
- Application Number
- CN202511410295.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-29
- Publication Date
- 2025-11-25
AI Technical Summary
The noise generated by existing shower equipment during use is transmitted through the water inlet pipe, affecting the user's comfort experience. In addition, existing noise reduction solutions are prone to clogging, have high maintenance costs, and are difficult to achieve efficient noise reduction in a limited space.
The design employs a multi-ring water flow hole design, combining fluid dynamics optimization and acoustic interference principles to optimize the depth, diameter, and distance of the water flow holes. A sound-absorbing structure is suspended within the spherical joint to achieve smooth fluid transition and noise suppression.
Effectively reduces noise to ≤20dB(A), avoids clogging, reduces production costs, is suitable for a variety of shower devices, meets EU standards, and enhances user experience.
Smart Images
Figure CN121007256A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to a ball joint with a sound attenuation function and a shower system. BACKGROUND
[0002] In modern buildings and home facilities, noise control of pipe systems and related equipment is increasingly concerned. Especially in places such as residences, hospitals and hotels where quiet environment is required, the noise generated by high-speed water flow through the pipe and the orifice becomes a technical problem to be solved. The existing shower equipment generates a large fluid dynamic noise due to the sudden change of water flow speed and the unreasonable design of the orifice during use, and this noise is transmitted to the adjacent room through the water inlet pipe, especially at night, which seriously affects the user's comfort experience. In addition, most of the top spray shower equipment currently cannot meet the requirement of ISO3822 standard that the noise of shower equipment is ≤40dB(A), which further highlights the shortcomings of the prior art in noise reduction performance.
[0003] The existing noise reduction solutions usually rely on complex and dense small hole multi-layer structure design, but such design is not only easy to block, but also needs to be replaced regularly, increasing the maintenance cost and inconvenience of use. Moreover, the ball head used needs to have a flow passage with a size matching the rear end of the sound attenuation structure, so as to play a sound attenuation role. Therefore, the ball head needs to use more metal materials to fill the space inside the ball head, increasing the manufacturing cost. At the same time, limited by the space size and flow rate conditions, how to achieve efficient noise reduction effect in limited space becomes a technical difficulty. SUMMARY
[0004] The present application discloses a ball joint with a sound attenuation function and a shower system, which aims to solve the above-mentioned problems, i.e. to reduce the noise of the water inlet pipe when the water outlet device is in use, and to avoid disturbing other users who are resting.
[0005] The present application adopts the following scheme:
[0006] A ball joint with a sound attenuation function, comprising a shell of the ball joint, the shell comprising a ball head portion with a built-in cavity, the ball head portion having portions with the same wall thickness, and further comprising a sound attenuation structure capable of being arranged at the water inlet of the ball head portion at one end; the other end of the sound attenuation structure is capable of being arranged in the cavity of the ball head portion; the sound attenuation structure comprises a body, and water flow holes are arranged on the body in the axial direction of the ball joint, the water flow holes being independently and dispersedly arranged on the body; the depth of the water flow hole is 5-10 times the aperture thereof.
[0007] The body is provided with at least three circles of water flow holes, wherein: one first water flow hole is located in the innermost circle, and the first water flow hole is coaxially arranged with the body; second water flow holes are located in the second circle, and the second water flow holes are annularly distributed on the outer periphery of the first water flow hole, and each second water flow hole has the same hole distance from the first water flow hole; third water flow holes are located in the third circle, and the third water flow holes are annularly distributed on the outer periphery of the second water flow hole, and each third water flow hole has the same hole distance from the first water flow hole.
[0008] In the embodiment of the application, the first water flow hole, the second water flow hole and the third water flow hole are located on the same straight line, the hole distance L1 between the first water flow hole and the second water flow hole, the hole distance L1 between the second water flow hole and the third water flow hole, and the two hole distances L1 are equal; the hole distance L2 between two adjacent second water flow holes, and the hole distance L3 between two adjacent third water flow holes, wherein L2 is not greater than L3.
[0009] In the embodiment of the application, a boss is arranged on the outer periphery of the upper end of the body, a stepped surface is arranged on the inner periphery of the upper end opening of the cavity, and the lower end surface of the boss can abut against the stepped surface, so that the sound attenuation structure can be suspended in the cavity.
[0010] In the embodiment of the application, a rib is further arranged on the outer periphery of the body below the boss, the rib is arranged to abut against the inner peripheral wall of the upper end opening of the cavity, and the rib is arranged to be inwardly contracted in the direction of the water flow.
[0011] In the embodiment of the application, a water saving piece is further arranged on the inner periphery of the cavity, the lower end surface of the water saving piece can abut against the upper end surface of the body, the upper end surface of the body is provided with a concave part, and the water inlet end of the water flow hole is arranged on the inner periphery of the concave part.
[0012] The application further discloses another technical feature.
[0013] The application further discloses another technical feature.
[0014] In the embodiment of the application, a water outlet device and a water inlet pipeline are further arranged, the water outlet end of the cavity can be connected in communication with the water inlet end of the water outlet device, and the water outlet end of the water inlet pipeline can be connected in communication with the water inlet end of the cavity.
[0015] In the embodiment of the application, the water inlet pipeline can be arranged in a wall.
[0016] The technical implementation principle of the present application is based on fluid mechanics optimization mechanism and sound wave interference suppression principle. In the fluid mechanics optimization mechanism, a plurality of dense small aperture designs are adopted to reduce the turbulent flow noise caused by the sudden change of water flow velocity, and to guide the smooth transition of fluid by changing the aperture flow distribution, thereby reducing the cavitation noise caused by local pressure drop. When the aperture consistency error is less than or equal to 0.1mm, the noise attenuation rate in the medium and high frequency band is significantly improved. Further, the height to aperture ratio of the water flow hole ranges from 5 to 10, so that the water flow is closer to the laminar flow state, thereby effectively reducing the noise.
[0017] In the sound wave interference suppression principle, the water flow holes are distributed in an equidistant or variable distance array, and the specific frequency band noise is cancelled by using the sound wave phase interference principle.
[0018] The present application has the advantages that by optimizing the structural parameters (such as height and aperture) of the water flow hole, the fluid dynamic noise can be effectively suppressed to meet the noise level I requirement (≤20dB(A)) in the European Union EN1111 and EN1112 standards. Further, the part structure is compact and easy to assemble, without the need for complex and dense small holes or multi-layer structure, avoiding the problem of blockage, and optimizing the structure of the ball head, saving the use of materials and reducing the production cost. In addition, the aperture design is greater than 1mm, which has good anti-blocking effect, ensures the water flow velocity and flow rate entering the water outlet device, and is suitable for various application scenarios. It has strong universality and can be used in various shower devices such as top spray, shower, and lotus arm, and has wide application range. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.
[0020] Figure 1 is a structural schematic diagram of a shower system in an embodiment of the present application.
[0021] Figure 2 is a structural schematic diagram of a ball joint in an embodiment of the present application.
[0022] Figure 3 is a perspective view of a sound attenuation structure in an embodiment of the present application.
[0023] Figure 4 is a sectional view of a sound attenuation structure in an embodiment of the present application.
[0024] Figure 5 is a top view of a sound attenuation structure in an embodiment of the present application.
[0025] Figure 6is the experimental data of noise generated by the application in the water inlet pipeline.
[0026] Figure 7 is the experimental data of noise generated by the application in the water inlet pipeline.
[0027] Figure 8 is the experimental data of noise generated by the application in the water inlet pipeline. DETAILED DESCRIPTION
[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the application clearer, the technical scheme in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are part of the embodiments of the application, rather than all the embodiments of the application.
[0029] With reference to the drawings in the description, the spherical joint of the application comprises a shell 1, a spherical head 2, a cavity 3 and a noise reduction structure 4. The shell 1 is the main part of the spherical joint, which can be made of copper, the upper part of which is provided with a screw connection structure consistent with the prior art, and the lower part of which is provided with the spherical head 2. The cavity 3 is built in the spherical head 2, and the wall thickness of the spherical head is basically the same, so that the cavity forms a spherical space for accommodating water flow and realizing the noise reduction function. One end of the noise reduction structure 4 is arranged at the water inlet of the spherical head 2, and the other end is suspended in the cavity 3, forming a stable water flow path to reduce noise propagation. The noise reduction structure is in the cavity, and there is a large gap between the peripheral wall of the noise reduction structure and the inner peripheral wall of the spherical head, which can be greater than the diameter of the noise reduction structure itself. In the prior art, the flow channel needs to be attached to the outer periphery of the silencer by a mechanism to achieve different functions. In this way, the use of raw materials can be effectively reduced. The noise reduction structure 4 comprises a body 5, and a plurality of independent and dispersed water flow holes 6 are arranged on the body 5 along the axial direction of the spherical joint. These water flow holes 6 realize noise suppression through specific depth, aperture and distance relationships.
[0030] Among them, the spherical head of the water passing part is made of European standard copper CuZn40Pb2, and the material of the noise reduction structure is POM. In this way, ACS, WRAS and KTW certifications can be passed, environmental properties can be achieved, water pollution can be prevented, and green products can be obtained.
[0031] Specifically, the design parameters of the water flow hole 6 are one of the core technical points of the present application. The depth L of the water flow hole 6 is 5-10 times the diameter D of the hole, which makes the water flow closer to the laminar flow state, thereby effectively suppressing the noise caused by turbulence and vortex. At the same time, the diameter of the water flow hole 6 is 2-3 times the distance between the two adjacent water flow holes, where the hole distance of the two adjacent water flow holes can be L1, L2, L3 as described below. By this design, the fluid is guided to transition smoothly, reducing the cavitation noise caused by local pressure drop. The body 5 is provided with at least three circles of water flow holes, namely the first water flow hole 7, the second water flow hole 8 and the third water flow hole 9. The first water flow hole 7 is located in the innermost circle and is coaxially arranged with the body 5, and there is only one; the second water flow hole 8 is annularly distributed on the outer periphery of the first water flow hole 7, and the hole distance of each second water flow hole 8 to the first water flow hole 7 is the same, and the hole distance of the two adjacent second water flow holes can also be the same; the third water flow hole 9 is annularly distributed on the outer periphery of the second water flow hole 8, and the hole distance of each third water flow hole 9 to the first water flow hole 7 is the same, and the hole distance of the two adjacent third water flow holes can also be the same.
[0032] Further analysis of the layout of the water flow hole 6, the hole distance of the first water flow hole 7 and the second water flow hole 8 is L1, the hole distance of the second water flow hole 8 and the third water flow hole 9 is also L1, the two hole distances are equal, and the centers of these holes are located on the same straight line. The hole distance of the two adjacent second water flow holes 8 is L2, and the hole distance of the two adjacent third water flow holes 9 is L3, wherein L2 is not greater than L3. The diameter D of the water flow hole 6 is 2-3 times the above hole distance L1, L2, L3, and the hole distance L3 can be equal to the hole distance L2. In particular, the diameter of the water flow hole 6 is preferably 1.5-2mm, which can effectively prevent the water flow from being blocked and affecting the water outlet, while also effectively reducing noise and preventing noise from being transmitted to other places through the water inlet pipeline, affecting the rest or overall experience of other users.
[0033] In order to realize the stable installation of the sound attenuation structure 4, a boss 10 is arranged on the outer periphery of the upper end of the body 5, a stepped surface 11 is arranged on the inner periphery of the upper end opening of the cavity 3, and the lower end surface of the boss 10 abuts on the stepped surface 11, so that the sound attenuation structure 4 is suspended in the cavity 3. The outer periphery of the body 5 below the boss 10 is also provided with a rib 12, which abuts and cooperates with the inner wall of the upper end opening of the cavity 3. The rib 12 is inwardly retracted along the water flow direction, so that the body is gradually fitted after being inserted from the upper end opening of the cavity 3, and finally the body is clamped at the upper end opening of the cavity 3. In addition, it also includes a water saving piece 13, which is arranged on the inner periphery of the shell 1, and the lower end surface thereof abuts on the upper end surface of the body 5. The upper end surface of the body 5 is provided with a concave part 14, and the water inlet end of the water flow hole 6 is located in the inner periphery of the concave part 14, which ensures uniform distribution of water flow and improves the noise reduction effect.
[0034] The application also provides a shower system comprising the above-mentioned ball joint with a sound attenuation function. The shower system further comprises a water outlet device 16 and a water inlet pipeline 17, wherein the water outlet end of the shell 1 is in communication with the water inlet end of the water outlet device 16, and the water outlet end of the water inlet pipeline 17 is in communication with the water inlet end of the shell 1. The water inlet pipeline 17 can be placed in the wall to save space and improve aesthetics. In actual operation, the high-speed water flow enters the shell 1 of the ball joint from the water inlet pipeline 17, and when passing through the water flow holes 6 on the sound attenuation structure 4, the water flow speed is reasonably controlled due to the design of the depth, aperture and distance of the water flow holes 6, the sound waves are dispersed in multiple directions, the problem of sound focusing in a specific direction is avoided, and the sound field distribution in the pipeline is further optimized, wherein the water outlet device can be a top spray, a shower, a shower arm, etc.
[0035] The technical implementation principle of the application is based on fluid mechanics optimization mechanism and sound wave interference suppression principle. In the fluid mechanics optimization mechanism, a plurality of dense small apertures are designed to reduce the turbulent flow noise caused by sudden change of water flow speed, and the fluid is guided to smoothly transition through the aperture shunt change to reduce the cavitation noise caused by local pressure drop. When the aperture consistency error is ≤0.1 mm, the noise attenuation rate in the medium and high frequency band is significantly improved. The height to aperture ratio of the water flow holes 6 is in the range of 5-10, which is more likely to suppress turbulent flow and vortex flow, so that the water flow is closer to the laminar flow state, thereby effectively reducing the noise.
[0036] In the sound wave interference suppression principle, the water flow holes 6 are distributed in an equal distance or variable distance array, and the sound wave phase interference principle is used to cancel the noise in a specific frequency band. The dynamic adjustment technology adjusts the distance distribution between the apertures to match the noise reduction requirements at different flow rates, and realizes the balance optimization of noise suppression and flow resistance.
[0037] In actual application scenarios, after the user starts the shower equipment, the high-speed water flow enters the shell 1 of the ball joint from the water inlet pipeline 17, and when passing through the water flow holes 6 on the sound attenuation structure 4, the water flow speed is reasonably controlled due to the design of the depth, aperture and distance of the water flow holes 6, the sound waves are dispersed in multiple directions, the problem of sound focusing in a specific direction is avoided, and the sound field distribution in the pipeline is further optimized. The design size, depth and distribution density of the water flow holes 6 directly affect the absorption efficiency of different frequency sounds, and can effectively control the diffraction and reflection process of sound waves. Generally speaking, smaller and denser apertures are beneficial to absorbing higher frequency sounds, while larger apertures can better handle lower frequency sounds. By controlling the structural parameters (height, aperture) of the water flow holes 6, effective suppression of fluid dynamic noise can be achieved.
[0038] The beneficial effects of the present application are that by optimizing the structural parameters (such as height, aperture) of the water flow hole 6, the fluid dynamic noise is effectively suppressed, meeting the noise level I requirement (≤20dB(A)) in EN1111, EN1112 standards. The part structure is compact and easy to assemble, without complex and dense small holes or multi-layer structure, avoiding the problem of blockage and reducing maintenance cost. In addition, the aperture design is >1mm, with good anti-blocking effect, suitable for various application scenarios. It is widely used in top spray, shower, shower arm and other shower devices, with wide application range.
[0039] The following compares the experimental data of the present structure and the existing structure, and compares the noise generated in the ball head. Referring to the drawings in the specification Figure 6 , the data in the first row and the third row are the data of the structure of the present application, and the data in the second row and the fourth row are the data of the existing structure. The first row and the second row use the same water outlet device, and the third row and the fourth row use the same water outlet device. In the two groups of data, the maximum decibel of the generated noise is basically the same, and there is no big difference. The two values in the same group in the figure are decibels and flow, such as 23 (decibels), 8.23 (flow).
[0040] The following compares the experimental data of the present structure and the existing structure, and compares the experimental data of the present structure and the existing structure. The water inlet pipeline can be placed in the wall, so that the noise generated in the ball head of the shower system in the shower area is conducted to another space (such as a room) through the water inlet pipeline. The comparison is made by measuring the distribution in another space. Referring to the drawings in the specification Figure 7 , the structure of the present application is used in the figure, and the drawings in the specification Figure 8 , the existing structure is used in the figure, and the same is carried out under the condition that the water pressure is 3.0bar and 5.0bar. From the two groups of data, it can be known that under the condition that the noise is basically the same, the flow in the present application has greater advantage, and the noise size is effectively suppressed under the condition that the flow is large. The vertical values in the figure are decibels and flow, such as 4 (decibels), 9.77 (flow), and the maximum decibel in the whole group of data is 10.0.
[0041] In summary, the present application significantly improves the noise problem of the existing shower equipment through specific structural design and parameter optimization, improves the user experience, and has the characteristics of high efficiency, economy and practicality, and is suitable for large-scale popularization and application.
[0042] The foregoing description has shown and described preferred embodiments of the application, but it will be understood that the application is not limited to the particular embodiments shown and described, as such will have many modifications, permutations, additions and subtractions and changes as are obvious to one skilled in the art, and it is therefore intended to cover all such modifications and changes as fall within the scope of the application, including combinations of the various features described above. Changes and modifications can be made to the application in light of this teaching and it is therefore intended to cover in the appended claims all such changes and modifications that fall within the scope of the application.
Claims
1. A ball joint having a sound deadening function, comprising a housing of a ball joint, the housing comprising a ball head portion in which a cavity is built, the ball head portion having portions of the same wall thickness, characterized in that: The muffling structure is arranged at one end of the ball head to be in water inlet position, and arranged at the other end of the ball head to be in the cavity of the ball head; The muffling structure comprises a body, and water flow holes are arranged on the body along the spherical joint axis, and the water flow holes are independently and dispersedly arranged on the body; The depth of the water flow hole is 5-10 times of the hole diameter.
2. The ball joint with a sound damping function according to claim 1, characterized in that, The body is provided with at least three circles of water flow holes, wherein: one first water flow hole is arranged in the innermost circle, and the first water flow hole is coaxially arranged with the body; second water flow holes are arranged in the second circle, and the second water flow holes are annularly distributed on the outer periphery of the first water flow hole, and each second water flow hole has the same hole distance from the first water flow hole; third water flow holes are arranged in the third circle, and the third water flow holes are annularly distributed on the outer periphery of the second water flow hole, and each third water flow hole has the same hole distance from the first water flow hole.
3. The ball joint with a sound damping function according to claim 2, characterized in that, The first water flow hole, the second water flow hole and the third water flow hole are located on the same straight line, the hole distance L1 between the first water flow hole and the second water flow hole, and the hole distance L1 between the second water flow hole and the third water flow hole, wherein the two hole distances L1 are equal; the hole distance L2 between two adjacent second water flow holes, and the hole distance L3 between two adjacent third water flow holes, wherein L2 is not greater than L3.
4. A ball joint with a sound dampening function according to any one of claims 1-3, characterized in that, A boss is arranged on the outer periphery of the upper end of the body, a stepped surface is arranged on the inner periphery of the upper end opening of the cavity, and the lower end surface of the boss can abut against the stepped surface, so that the muffling structure can be suspended in the cavity.
5. The ball joint with a sound damping function according to claim 4, characterized in that, A rib is arranged on the outer periphery of the body below the boss, and the rib is arranged to abut against the inner wall of the upper end opening of the cavity; in the direction of the water flow, the rib is arranged to be inwardly contracted.
6. The ball joint with sound attenuation function and shower system according to claim 5, characterized in that, A water saving piece is further arranged on the inner periphery of the shell, and the lower end surface of the water saving piece can abut against the upper end surface of the body; the upper end surface of the body is provided with a concave part, and the water inlet end of the water flow hole is arranged in the inner periphery of the concave part.
7. A shower system comprising a spherical joint with a muffling function according to any one of claims 1-6.
8. A shower system as claimed in claim 7, characterised in that The shell is provided with a water outlet device and an inlet pipeline, the water outlet end of the shell can be connected with the water inlet end of the water outlet device, and the water outlet end of the inlet pipeline can be connected with the water inlet end of the shell.
9. A shower system as claimed in claim 8, wherein The inlet pipeline can be arranged in the wall.