Noise reduction method for water purification equipment and water purification equipment

Abstract

The invention relates to the technical field of water purification, and discloses a noise reduction method for water purification equipment and the water purification equipment, the air pressure in an air chamber can be automatically adjusted according to the working state of a booster pump, so that the inflation rigidity of an air bag body can be accurately adjusted according to the vibration characteristics of the booster pump in different working states, and the air bag body can absorb and disperse vibration energy more effectively; and vibration transmission and noise generation are reduced, it is ensured that the air bag body can always keep good vibration isolation performance under vibration of different frequencies, wide-frequency precise vibration isolation is achieved, the air bag body adapts to the complex vibration environment, the noise reduction effect is remarkably improved, and the user experience is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of water purification, and in particular to a noise reduction method for water purification equipment and water purification equipment. Background Art

[0002] In recent years, as consumers pay more and more attention to health products, water purification products have gradually become the focus of the market, which in turn has promoted the rapid development of the water purification industry. Among them, reverse osmosis water purification equipment achieves reverse osmosis of tap water by applying a higher water pressure in front of the reverse osmosis membrane to produce pure water. In order to achieve the required water production efficiency, a high-power booster pump must be installed in front of the reverse osmosis membrane. During the entire operation of the water purification equipment, the booster pump will generate certain vibrations at high speeds, which will be transmitted to the body of the water purification equipment, causing mechanical resonance and generating significant noise. This noise usually increases with the increase of the flux of the water purification equipment, seriously affecting the user experience and becoming a pain point in the use of current reverse osmosis water purification equipment.

[0003] In this regard, in order to achieve noise reduction of reverse osmosis water purification equipment, the industry generally installs soft rubber pads between the booster pump and the body of the water purification equipment, or installs an additional pump casing outside the booster pump, and uses the soft rubber pads and pump casing to reduce the vibration transmission between the booster pump and the body of the water purification equipment, thereby achieving the purpose of noise reduction. However, the material properties of the soft rubber pads and pump casings (such as hardness and damping ratio) determine the upper limit of their vibration isolation effect, making it difficult for the rubber pads and pump casings to effectively absorb and disperse vibration energy in high-frequency or high-intensity vibration environments. In addition, the vibration isolation performance of the soft rubber pads and pump casings will change with changes in vibration frequency and amplitude, and it is difficult to maintain stable vibration isolation performance within a wide frequency band. The above reasons all lead to limited noise reduction effects through soft rubber pads and pump casings, making it difficult to meet consumers' demand for quiet operation of water purification equipment. Summary of the invention

[0004] The present invention aims to provide a water purification equipment noise reduction method and water purification equipment to solve the above technical problems.

[0005] In order to achieve the above objectives, the following technical solutions are provided:

[0006] In a first aspect, the present invention provides a method for reducing the noise of a water purification equipment, which is suitable for reducing the noise of a water purification equipment with a built-in booster pump, comprising: setting an airbag body inside a shell of the water purification equipment, and setting an air chamber that can seal and contain gas inside the airbag body, supporting and positioning the booster pump by the airbag body, and blocking and suppressing the mechanical vibration transmitted to the outside when the booster pump is working to achieve noise reduction; obtaining a working state value of the booster pump and a stiffness detection value of the airbag body; the working state value at least includes the working speed of the booster pump; comparing the working state value of the booster pump with a preset trigger working range, and according to the comparison result, increasing or decreasing the air pressure in the air chamber or maintaining the air pressure inside the air chamber unchanged, and dynamically adjusting the stiffness detection value of the airbag body to a preset stiffness range.

[0007] As an optional scheme of the water purification equipment noise reduction method provided by the present invention, it also includes: the trigger working range at least includes a first trigger range and a second trigger range in which the working intensity increases successively; if the working state value of the booster pump is within the first trigger range, the air pressure in the air chamber is reduced or maintained, and the stiffness detection value is adjusted to the preset first stiffness range; if the working state value of the booster pump is within the second trigger range, the air pressure in the air chamber is increased, and the stiffness detection value is adjusted to the preset second stiffness range.

[0008] As an optional solution to the noise reduction method for water purification equipment provided by the present invention, the trigger working range also includes a peak working range, and the working intensity of the peak working range is greater than that of the second trigger range. If the working state value of the boost pump is in the peak working range, the air pressure in the air chamber is reduced and the stiffness detection value is adjusted to a preset peak stiffness range.

[0009] As an optional solution of the water purification equipment noise reduction method provided by the present invention, the stiffness detection value at least includes the air pressure value of the air chamber.

[0010] As an optional solution of the water purification equipment noise reduction method provided by the present invention, the working state value also includes the output flow of the booster pump.

[0011] As an optional solution of the method for reducing noise of water purification equipment provided by the present invention, whether to issue an alarm is determined according to the stiffness detection value of the airbag body.

[0012] As an optional solution of the water purification equipment noise reduction method provided by the present invention, "determining whether to issue an alarm based on the stiffness detection value of the airbag body" includes: if the stiffness detection value is within a preset stiffness range, no alarm is issued; if the stiffness detection value exceeds the preset stiffness range, the alarm preset on the water purification equipment is controlled to issue an alarm.

[0013] As an optional solution to the noise reduction method for water purification equipment provided by the present invention, "increasing the air pressure in the air chamber" includes: by using an air pump preset to be connected to the bottom of the air chamber, gas is pumped into the air chamber from the bottom of the air chamber to increase the air pressure in the air chamber; "reducing the air pressure in the air chamber" includes: by using an exhaust valve preset to be connected to the top of the air chamber, gas is discharged from the air chamber from the top of the air chamber to reduce the air pressure in the air chamber.

[0014] As an optional solution to the noise reduction method for water purification equipment provided by the present invention, "reducing the air pressure in the air chamber" also includes: while discharging the gas from the air chamber through the exhaust valve, simultaneously pumping the gas into the air chamber from the bottom of the air chamber through an air pump, the air outlet from the top of the air chamber is greater than the air intake at the bottom, forming a gas surplus to reduce the air pressure in the air chamber.

[0015] In a second aspect, the present invention further provides a water purification device, which includes a processor configured with operating instructions executable by the processor to execute the water purification device noise reduction method as described above.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The airbag is used as a supporting structure to suspend and position the booster pump, which has more significant elasticity and can achieve a closer fit with the booster pump, housing or other water purification components, improving the stability of the overall structure and reducing the additional noise caused by loose components. Since the airbag is filled with air, the air can play an additional buffering role, enhance the vibration isolation effect, more effectively absorb and disperse the vibration energy generated by the booster pump when it is working, effectively suppress and reduce the mechanical vibration transmitted by the booster pump to the outside world, and reduce the noise generated by the water purification equipment when it is working, thereby deeply improving the user experience.

[0018] 2. The water purification equipment can automatically adjust the air pressure in the air chamber according to the working state of the booster pump, so that the inflation stiffness of the airbag can be accurately adjusted according to the vibration characteristics of the booster pump under different working states. The airbag can more effectively absorb and disperse vibration energy, reduce vibration transmission and noise generation, and ensure that under vibrations of different frequencies, the airbag can always maintain good vibration isolation performance, achieve wide-frequency precise vibration isolation, adapt to complex vibration environments, significantly improve noise reduction effects, and enhance user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0020] Figure 1 is a schematic diagram of the internal structure of the housing of the water purification device provided in this embodiment;

[0021] Figure 2 is a schematic diagram of the structure of the air bag body of the water purification device provided in this embodiment;

[0022] Figure 3 is a schematic structural diagram of the air bag body of the water purification device provided in this embodiment being connected to the booster pump;

[0023] Figure 4 This is a water production process diagram of the water purification equipment provided in this embodiment;

[0024] Figure 5 is a schematic structural diagram of a booster pump for a water purification device provided in this embodiment;

[0025] In the figure:

[0026] 1. Shell; 11. Accommodating cavity; 12. Limiting groove; 2. Clean water waterway; 21. Raw water inlet; 22. Pre-treatment filter element; 23. RO filter element; 24. Post-filter element; 25. Hall switch faucet; 26. Wastewater valve; 3. Booster pump; 31. Pump body; 32. Pump head; 33. Waterway port; 34. Waterway pipe; 4. Airbag body; 41. Installation groove; 411. Positioning gas ribs; 412. Heat dissipation channel; 413. Sound insulation groove; 42. Air chamber; 43. Bag seat; 44. Support bag plate; 45. Suspension sheet; 46. Positioning bag plate; 47. Positioning groove; 48. Inlet nozzle; 49. Outlet nozzle; 5. Stiffness adjustment component; 51. Air pump; 52. Exhaust valve; 6. Control component; 61. Stiffness detector; 62. Controller. DETAILED DESCRIPTION

[0027] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] This specific implementation scheme specifically provides a method for reducing the noise of a water purification equipment. Before introducing the method for reducing the noise of a water purification equipment, a water purification equipment that uses an air suspension design for vibration isolation and noise reduction is first specifically introduced. Taking the introduced water purification equipment as an example, the method for reducing the noise of a water purification equipment provided by this specific implementation scheme is specifically explained.

[0031] Embodiment 1:

[0032] refer to Figure 1 to Figure 5 A water purification device, which is the same as the existing water purification device for preparing purified water by reverse osmosis technology, includes a shell 1, on which a purified water waterway 2 is installed, and the purified water waterway 2 is connected in series in a preset direction at least with a raw water inlet 21, a pre-treatment filter element 22, a booster pump 3, an RO filter element 23, a post-filter element 24 and a Hall switch faucet 25, wherein the RO filter element 23 is also connected to a wastewater valve 26, and a booster pump 3 is connected in series between the pre-treatment filter element 22 and the RO filter element 23, and the shell 1 forms a receiving chamber 11, and the booster pump 3 is positioned in the receiving chamber 11.

[0033] During operation, the Hall switch faucet 25 is opened, the booster pump 3 is started, and the raw water is transported into the pre-treatment filter element 22 through the raw water inlet 21. The raw water is filtered by the pre-treatment filter element 22, and then the booster pump 3 pressurizes the medium water obtained by filtering the pre-treatment filter element 22. The medium water is pressurized and transported to the RO filter element 23. The RO filter element 23 is filtered to obtain RO pure water, which is then filtered by the post-filter element 24 and released from the Hall switch faucet 25. The waste water generated during water production is discharged outward through the waste water valve 26. The water production stops when the faucet is closed.

[0034] Compared with the prior art, the present application has the following improvements:

[0035] A vibration isolation device is provided in the accommodating chamber 11 of the housing 1. The vibration isolation device adopts a suspension design and can suspend and position the booster pump 3 in the accommodating chamber 11. Specifically, the vibration isolation device includes an airbag body 4 and a stiffness adjustment component 5. The airbag body 4 is made of elastic materials such as silicone rubber. The airbag body 4 is connected to the inner wall of the accommodating chamber 11 by bonding, snapping, bolts, etc. The airbag body 4 is formed with a mounting groove 41, and the booster pump 3 is snapped into the mounting groove 41; an air chamber 42 is formed inside the airbag body 4, and the stiffness adjustment component 5 is connected to the air chamber 42, which is used to extract or replenish the internal gas of the air chamber 42 to adjust the inflation stiffness of the airbag body 4. During operation, the airbag body 4 supports and positions the booster pump 3, blocks and suppresses the mechanical vibration transmitted to the outside world by the booster pump 3 during operation, and reduces the operating noise. In addition, according to the working pressure and specific vibration characteristics of the booster pump 3, the stiffness adjustment component 5 can inflate or evacuate the air chamber 42 to adjust the inflation stiffness of the airbag body 4, so that the inflation stiffness of the airbag body 4 is adapted to the vibration frequency of the booster pump 3, thereby achieving the best vibration isolation and noise reduction effect.

[0036] It should be noted that the inflation stiffness mentioned in this article refers to the ability of the airbag 4 to resist deformation when it is inflated. Specifically, the inflation stiffness describes the ability of the material to resist external forces when the airbag 4 is filled with gas, that is, the ability to resist the shape change caused by the vibration generated when the booster pump 3 is working. The size of the inflation stiffness depends on the gas pressure of the air chamber 42 inside the airbag 4 and the elastic properties of the material of the airbag 4. When the gas pressure in the air chamber 42 increases, the inflation stiffness of the airbag 4 will also increase accordingly, making it more adaptable to resist higher-frequency external vibrations. Conversely, when the inflation stiffness of the airbag 4 decreases, the ability of the airbag 4 to resist lower-frequency vibrations is improved.

[0037] Compared with the prior art technical solution of "arranging soft rubber pads and pump casing on the booster pump 3 to isolate and reduce noise", the advantages of the above technical solution of the present application are:

[0038] First, the airbag body 4 is selected as the supporting structure to suspend and position the booster pump 3. Compared with the soft rubber pad and the pump shell, the elasticity of the airbag body 4 is more significant. When it contacts the booster pump 3, the housing 1 or other water purification components, its deformation degree is greater, thereby achieving a closer fit with the booster pump 3, the housing 1 or other water purification components. This tight fit not only improves the stability of the overall structure, but also can effectively reduce the additional noise caused by the looseness of components. In addition, since the airbag body 4 is filled with air, the air can play an additional buffering role and enhance the vibration isolation effect. Therefore, during operation, the airbag body 4 can more effectively absorb and disperse the vibration energy generated by the booster pump 3 when it is working, effectively suppress and reduce the mechanical vibration transmitted to the outside world (i.e., other components of the water purification waterway 2 or the housing 1) when the booster pump 3 is working, and reduce the noise generated when the water purification equipment is working, thereby deeply improving the user experience.

[0039] Secondly, since the air chamber 42 can be inflated or evacuated through the stiffness adjustment component 5, the inflation stiffness of the airbag 4 can be accurately adjusted according to the vibration characteristics of the booster pump 3, so that the airbag 4 can more effectively absorb and disperse the vibration energy, reduce vibration transmission and noise generation, and ensure that the airbag 4 can always maintain good vibration isolation performance under vibrations of different frequencies. Therefore, this design can achieve wide-frequency precise vibration isolation, handle complex vibration environments, and significantly improve the noise reduction effect.

[0040] Further, in this embodiment, the inner wall of the mounting groove 41 extends outward to form a plurality of positioning gas ribs 411, which are used to abut the booster pump 3 to position the booster pump 3, and at the same time, the plurality of positioning gas ribs 411 are spaced apart from each other to form a plurality of heat dissipation channels 412. Through the above scheme, the positioning gas ribs 411 extend outward and abut the booster pump 3, which can not only provide a more stable and accurate positioning for the booster pump 3, but also enhance the structural strength of the mounting groove 41 and the airbag body 4, so that the mounting groove 41 and the airbag body 4 can maintain a complete structural form under a severe vibration working environment, continuously fit and contact the booster pump 3, and improve vibration isolation stability. In addition, the positioning gas ribs 411 are spaced apart from each other to form heat dissipation channels 412, which can provide a good heat dissipation environment for the booster pump 3, prevent the airbag body 4 from excessively fitting the booster pump 3, and during the operation of the booster pump 3, the heat generated can be quickly dissipated to the surrounding environment through the heat dissipation channels 412, avoiding the overheating problem caused by heat accumulation, ensuring the long-term stable operation of the booster pump 3, and extending the service life.

[0041] In order to increase the water flow rate of the water purification equipment and facilitate water collection, the existing water purification equipment has been improved on the basis of the original reverse osmosis water purification process, and the small flux reverse osmosis membrane has been changed to a large flux reverse osmosis membrane, and the booster pump 3 has been changed to a corresponding large flux booster pump 3. Although this process meets the flow requirements of the water purifier, the large flux booster pump 3 has a larger volume, mass and working intensity than the original booster pump 3, so that its working vibration also increases with the increase of its flux. At the same time, in order to adapt to smooth exhaust, the large flux booster pump 3 is usually positioned in the water purification equipment in a vertical form, that is, in a vertical form. These increase the difficulty of vibration isolation and noise reduction of the booster pump 3 of the water purification equipment.

[0042] In this regard, in order to meet the vibration isolation and noise reduction requirements of the existing water purification equipment using a vertical large-flux booster pump 3 design, this application optimizes and improves the implementation structure of the airbag body 4 and the connection method between the airbag body 4 and the booster pump 3, specifically:

[0043] The booster pump 3 is vertically arranged in the accommodating chamber 11. The booster pump 3 includes a vertically extending pump body 31. A pump head 32 is connected to the bottom end of the pump body 31. A waterway port 33 is arranged on the pump head 32. The waterway port 33 is connected to a waterway pipe 34. The waterway port 33 includes a water inlet port and a water outlet port. The waterway pipe 34 includes a water inlet pipe connected to the water inlet port and a water outlet pipe connected to the water outlet port. The airbag body 4 includes a bag seat 43. The bag seat 43 is positioned at the bottom of the accommodating chamber 11. The mounting groove 41 is formed on the bag seat 43. One end of the bag seat 43 away from the bottom of the accommodating chamber 11 is longitudinally extended to form a supporting bag plate 44. The supporting bag plate 44 is connected to the side wall of the accommodating chamber 11 and is provided with a hanging piece 45. The pump head 32 of the booster pump 3 is snap-fitted and positioned in the mounting groove 41. The pump body 31 thereof is connected to the hanging piece 45. For the purpose of vibration isolation and noise reduction, the suspension piece 45 is preferably made of elastic material such as silicone, rubber, etc., and is arranged on the support bag plate 44 by bonding or integral molding. In this embodiment, the pump body 31 is directly bonded to the suspension piece 45 by strong glue. In addition to bonding, a clamping sleeve or a clamping hoop can also be provided on the suspension piece 45, and the pump body 31 can be detachably connected to the pump body 31 through the clamping sleeve or the clamping hoop.

[0044] When the water purification equipment adopts a large flux reverse osmosis process, that is, a large flux booster pump 3 is arranged vertically and positioned in the accommodating chamber 11 of its housing 1, the large flux booster pump 3 can be effectively isolated and noise-reduced by the above-mentioned airbag body 4 structure. When working, the pump head 32 of the pump body 31 is snap-fitted and positioned in the mounting groove 41 of the bladder seat 43, and the bladder seat 43 is used as the main supporting structure to support the booster pump 3 as a whole. At the same time, the bladder seat 43 extends longitudinally to form a supporting bladder plate 44, and is connected to the side wall of the accommodating chamber 11. The pump body 31 of the booster pump 3 is connected by the suspension sheet 45 on the supporting bladder plate 44. This design not only provides a stable supporting structure, but also disperses the weight of the booster pump 3 by means of segmented suspension, avoiding the problem of local overpressure of the airbag body 4 caused by excessive force on a single point, and ensuring that the airbag body 4 has good elasticity to absorb vibration and reduce noise. In addition to the above benefits, the segmented suspension method is adopted to "disperse the weight of the booster pump 3 and reduce the average pressure of the booster pump 3 on the airbag 4", and can also effectively reduce the inflation resistance when "the stiffness adjustment component 5 replenishes gas in the air chamber 42 of the airbag 4", and can avoid the situation where "the stiffness adjustment component 5 extracts gas from the air chamber 42 of the airbag 4, and the air bag 4 is under excessive pressure, causing excessive gas overflow from the air chamber 42". It improves the suction accuracy of the stiffness adjustment component 5 on the air chamber 42, and makes the inflation stiffness adjustment process of the airbag 4 more precise.

[0045] In order to further enhance the vibration isolation and noise reduction capability of the vertical large-flux booster pump 3, in this embodiment, the end of the support bladder plate 44 away from the bladder seat 43 extends outward to form a positioning bladder plate 46, and the positioning bladder plate 46 is formed with a positioning groove 47, and the end of the pump body 31 away from the pump head 32 is snap-fitted and positioned in the positioning groove 47. By providing the positioning bladder plate 46 and the positioning groove 47, the booster pump 3 can be longitudinally and bidirectionally positioned in cooperation with the bladder seat 43 and the mounting groove 41, thereby reducing the additional vibration of the booster pump 3 caused by improper installation or looseness.

[0046] Furthermore, in order to enhance the support and bottom vibration isolation performance of the vertical booster pump 3. In this embodiment, a limiting groove 12 is formed at the bottom of the accommodating chamber 11, and the bottom of the airbag body 4, that is, the bag seat 43, is positioned in the limiting groove 12, and the bottom of the airbag body 4 is horizontally and laterally limited by the limiting groove 12. By setting the limiting groove 12 to horizontally and laterally limit the bag seat 43, that is, the bottom of the airbag body 4, the displacement range of the bottom of the airbag body 4 during the vibration process can be limited, thereby reducing the transmission of vibration energy to other parts of the water purification equipment, and ensuring that the airbag body 4 maintains a certain shape and rigidity during the vibration process, so as to better absorb and disperse the vibration energy, improve the overall vibration isolation performance, and help reduce the noise and vibration of the booster pump 3 when it is working.

[0047] In addition to the vibration and noise generated by the body of the booster pump 3, there is also vibration of the pump inlet and outlet pipes caused by the vibration of the body of the booster pump 3, as well as vibration of the inlet and outlet pipes of the booster pump 3 caused by the pulse pressurization process. Since the inlet and outlet pipes are generally connected to other components, this vibration is extremely easy to be transmitted to the connected components. This will not only cause resonance of other components, but also cause water leakage and reliability risks at the interface. Therefore, it is necessary to reduce the vibration of the inlet and outlet pipes of the booster pump 3, which helps to reduce noise and improve reliability. In this regard, in the present embodiment, the mounting groove 41 is provided with a soundproof groove 413, and the inner wall of the soundproof groove 413 at least partially abuts the waterway port 33 and the waterway pipe 34. The design of the sound insulation groove 413 enables the water port 33 and the water pipe 34 to fit in contact with the airbag body 4, forming an integrated connection between the airbag body 4, the water port 33 and the water pipe 34. The airbag body 4 absorbs and isolates the vibration of the booster pump 3 body and its inlet and outlet pipes, significantly reducing the impact of these vibrations on other connecting components, thereby reducing resonance, reducing the risks of loose interfaces and water leakage caused by vibration, and improving the overall reliability and service life of the system.

[0048] The structural composition and connection method of the "stiffness adjustment component 5 adjusts the inflation stiffness of the airbag body 4" solution are specifically introduced below.

[0049] The airbag body 4 is provided with an air inlet nozzle 48 and an air outlet nozzle 49 respectively connected to the air chamber 42. The stiffness adjustment component 5 includes an air pump 51 and an exhaust valve 52. The output end of the air pump 51 is connected to the air inlet nozzle 48 for the inside of the air chamber 42. The input end of the exhaust valve 52 is connected to the exhaust nozzle 49 for exhausting the gas in the air chamber 42. During operation, when the flux of the booster pump 3 increases, the working pressure increases, and the vibration frequency generated becomes higher, the air pump 51 can supplement gas into the air chamber 42 of the airbag body 4 through the air inlet nozzle 48 to inflate the air chamber 42 and improve the stiffness of the airbag body 4; when the flux of the booster pump 3 decreases, the working pressure decreases, and the vibration frequency generated becomes lower, the exhaust valve 52 can exhaust the air chamber 42 of the airbag body 4 through the exhaust nozzle 49 to deflate and shrink the air chamber 42, thereby reducing the stiffness of the airbag body 4, so that the airbag body 4 can adapt to the vibration suppression requirements under different working conditions.

[0050] The above-mentioned implementation structure of "inflating the airbag 4 through the air pump 51 and exhausting the airbag 4 through the exhaust valve 52" is not only simple and reliable in structure, but also the functions of the stiffness adjustment component 5 to supplement gas and extract gas from the airbag 4 are independently realized by the air pump 51 and the exhaust valve 52 respectively, which can improve the adjustment response capability of the inflation stiffness of the airbag 4, so that the inflation stiffness of the airbag 4 can follow the changes in the working pressure of the booster pump 3, thereby realizing rapid response adjustment.

[0051] In order to improve the structural stability of the airbag body 4 during the process of filling and discharging the gas in the air chamber 42, the present embodiment optimizes the positions of the air inlet nozzle 48 and the air outlet nozzle 49: the air inlet nozzle 48 is arranged at the bottom of the airbag body 4 (i.e., the bottom of the airbag seat 43) and communicates with the bottom end of the air chamber 42, and the air outlet nozzle 49 is arranged at the top of the airbag body 4 (i.e., the top of the positioning airbag plate 46) and communicates with the top end of the air chamber 42.

[0052] Through the above design, the air inlet is located at the bottom of the airbag body 4 and is connected to the bottom of the air chamber 42, so that when the air pump is inflated, the gas can directly and efficiently enter the bottom of the air chamber 42. In view of the rising characteristics of the gas, the bottom air intake helps the gas to be evenly distributed in the air chamber 42, thereby reducing the formation of bubbles and dead corners. In addition, the bottom air intake design can ensure that the bottom of the airbag body 4 is supported and fixed first during the inflation process, which helps to establish a stable bottom structure at the beginning of inflation, reduce the bottom shaking or deformation caused by uneven inflation, and improve the vibration isolation stability of the airbag body 4; and the design that the air outlet is located at the top of the airbag body 4 and is connected to the top of the air chamber 42 enables the exhaust valve 52 to preferentially exhaust the gas at the top of the air chamber 42 when exhausting. Since the gas in the air chamber 42 is usually distributed in a state of more at the top and less at the bottom (especially during the inflation process), the top exhaust helps to reduce the overall air pressure in the air chamber 42 more quickly. At the same time, the top exhaust can also reduce the disturbance of the gas to other parts of the air chamber 42 during the exhaust process, and maintain the stability of the air chamber 42.

[0053] In addition, in this embodiment, a one-way valve is connected in series between the air inlet nozzle 48 and the air pump 51 to allow gas to enter the air chamber 42 in one direction. When the air pump 51 is working, shut down or fails, the one-way valve can prevent the gas in the air chamber 42 from flowing back to the air pump 51, which helps to maintain the air pressure inside the airbag body 4 stable, improve the inflation efficiency and the stiffness adjustment accuracy of the airbag body 4.

[0054] Furthermore, in order to achieve automatic control, the water purification equipment provided in this embodiment also includes a control component 6, which includes a stiffness detector 61 and a controller 62; the stiffness detector 61 is connected to the airbag body 4 to detect the inflation stiffness of the airbag body 4; the signal input end of the controller 62 is connected to the booster pump 3 and the stiffness detector 61; the signal output end of the controller 62 is connected to the stiffness adjustment component 5, which is used to control the stiffness adjustment component 5 to extract or replenish gas from the air chamber 42. The controller 62 includes a processor, and the processor is configured with operating instructions for controlling the operation of other components.

[0055] During operation, the boosting pump 3 can be connected through the controller 62 to read the motor speed or current of the boosting pump 3, and monitor the working pressure of the boosting pump 3. At the same time, the stiffness detector 61 is connected to the airbag 4 and the controller 62 to detect the stiffness of the airbag 4, and the detection data is transmitted to the controller 62 in real time. The controller 62 performs data processing and logical judgment. According to the working pressure of the boosting pump 3 and the actual stiffness of the airbag 4, the controller 62 transmits a signal to the stiffness adjustment component 5 to drive the stiffness adjustment component 5 to replenish or extract gas from the air chamber 42 of the airbag 4, adjust the inflation stiffness of the airbag 4, and adjust the stiffness of the airbag 4 to the preset value of the stiffness of the "different working pressure conditions of the boosting pump 3", thereby realizing automatic control of the stiffness of the airbag 4.

[0056] Specifically, the selection of the stiffness detector 61 is diverse. In this embodiment, the stiffness detector 61 preferably uses an air pressure sensor. When working, the air pressure sensor is connected to the air chamber 42 of the airbag 4, and the inflation stiffness of the airbag 4 is evaluated by detecting the air pressure value in the air chamber 42. Compared with other detection structures, the air pressure sensor can measure the air pressure value in the air chamber 42 in real time and accurately, and the air pressure value is directly related to the inflation state and stiffness of the airbag 4. Therefore, by monitoring the change of the air pressure value in the air chamber 42, the inflation stiffness of the airbag 4 can be more accurately evaluated indirectly. In addition, in order to improve the accuracy and stability of automatic control and stiffness adjustment of the airbag 4, and prevent the failure of a single sensor, resulting in unsatisfactory system noise reduction effect. The stiffness detector 61 may also include a deformation sensor and a displacement sensor. When working, the deformation sensor or the displacement sensor can be set on the outer wall of the airbag 4 to assist in evaluating the inflation stiffness of the airbag 4 by detecting the local deformation and displacement of the airbag 4 during inflation and deflation.

[0057] Embodiment 2

[0058] A method for reducing noise of a water purification device, applied to the water purification device as shown in the first embodiment, comprising:

[0059] When the water purification equipment is powered on, the working state value of the booster pump 3 and the stiffness detection value of the airbag 4 are obtained; the working state value of the booster pump 3 is compared with the preset trigger working range, and according to the comparison result, the stiffness adjustment component 5 is controlled to increase or decrease the air pressure in the air chamber 42 or maintain the air pressure in the air chamber 42 unchanged, and the working stiffness of the airbag 4 is adjusted to within the preset stiffness range, so as to realize intelligent noise reduction adjustment, so as to maintain the airbag 4 in the optimal stiffness range, and ensure that the airbag 4 can maintain effective vibration isolation and noise reduction effects under different workloads.

[0060] In addition to the air pressure value p of the air chamber 42 detected by the air pressure sensor, the stiffness detection value of the airbag body 4 can also be set to detect the local deformation and displacement of the airbag body 4 when it is inflated and deflated by a deformation sensor or a displacement sensor; the working state value of the booster pump 3 can also be obtained by installing a flow meter on the outlet pipe of the booster pump 3 to monitor the output flow Q of the booster pump 3 per unit time (i.e., the water output of the Hall switch faucet 25), and adopting a dual-parameter detection mode to reduce the interference of water pressure, water quality or pipeline resistance conditions, so as to achieve a comprehensive and accurate reflection of the actual working state of the booster pump 3, thereby more accurately adjusting the stiffness of the airbag body 4. In this embodiment, the working speed V and the output flow Q are included in the working state value of the booster pump 3 to evaluate the working state of the booster pump 3, and the air pressure value p of the air chamber 42 is used as the stiffness detection value of the airbag body 4 to evaluate the working stiffness of the airbag body 4.

[0061] In this embodiment, there are four different triggering working ranges of the booster pump 3, namely the first working range, the second working range, the third working range and the peak working range. The triggering working range of the booster pump 3 can be a fixed value or an interval value. In this embodiment, considering the influence of water pressure, water quality, pipeline resistance and vibration factors, the motor operating speed V and output flow Q of the booster pump 3 will fluctuate during operation. Therefore, in order to reduce the difficulty of adjustment and improve the control fluency, the triggering working range is set to an interval value, wherein:

[0062] The first working range is: "0≤V<V1, 0≤Q<Q1";

[0063] The second working range is: "V1≤V<V2, Q1≤Q<Q2";

[0064] The third working range is: "V2≤V<V3, Q2≤Q<Q3";

[0065] Peak operating range: "V ≥ V3, Q ≥ Q3"

[0066] In the above-mentioned trigger working ranges, V1, V2, and V3 increase successively, respectively representing the speed thresholds of the motor of the booster pump 3 under different working conditions, and Q1, Q2, and Q3 increase successively, respectively representing the output flow thresholds of the booster pump 3 under different working conditions.

[0067] Correspondingly, the working stiffness range of the airbag body 4 under the constant air pressure of the air chamber 42 has four values, and the working stiffness range can be a fixed value or an interval value. In this embodiment, considering that the airbag body 4 will be affected by the vibration of the booster pump 3 during operation, the air pressure of the internal air chamber 42 will fluctuate. Therefore, in order to reduce the difficulty of adjustment, the working stiffness range is set to an interval value. The working stiffness ranges are the first stiffness range, the second stiffness range, the third stiffness range and the peak stiffness range, respectively, wherein:

[0068] The first stiffness range is: "p1≤p≤p2";

[0069] The second stiffness range is: "p2<p≤p3";

[0070] The third stiffness range is: “p3<p≤p4”;

[0071] The peak stiffness range is: “p5<p<p6”;

[0072] p1, p2, p3, p4, p5, and p6 respectively represent the working stiffness thresholds of the airbag body 4 under different working conditions, wherein the magnitude relationship of p1, p2, p3, p4, p5, and p6 is p5<p6<p1<p2<p3<p4.

[0073] The control method provided in this embodiment is specifically as follows:

[0074] S1. The water purification device is powered on, the controller 62 is connected to the booster pump 3, and the working speed V of the motor of the booster pump 3 is detected and read. At the same time, the output flow Q of the booster pump 3 is fed back to the controller 62 by the flow meter, and the air pressure value p of the air chamber 42 of the airbag 4 is fed back to the controller 62 by the air pressure sensor;

[0075] S2, the controller 62 compares the detected working state value of the booster pump 3 with the preset trigger working range;

[0076] S3.1. If the working state value satisfies the preset first working range, i.e., 0≤V<V1, 0≤Q<Q1, the stiffness adjustment component 5 is controlled to exhaust the air chamber 42, reduce the air pressure in the air chamber 42, or maintain the air pressure in the air chamber 42 unchanged, and adjust the inflation stiffness of the airbag body 4 to the preset first stiffness range, i.e., adjust the air pressure value p of the air chamber 42 to satisfy p1≤p≤p2;

[0077] S3.11, after the preset time, if P does not satisfy p1≤p≤p2, an alarm is issued to indicate that there is a sealing problem with the detection airbag 4. In this embodiment, the alarm can be generated by the lighting of an indicator light preset on the water purification device, or by the sound of a buzzer alarm, or by a text prompt on a display screen preset on the water purification device;

[0078] S3.2, if the working state value satisfies the preset second working range, that is, V1≤V<V2, Q1≤Q<Q2, the stiffness adjustment component 5 is controlled to inflate and deflate the air chamber 42, increase or decrease the air pressure in the air chamber 42, or maintain the air pressure in the air chamber 42 unchanged, and adjust the inflation stiffness of the airbag body 4 to the preset second stiffness range, that is, adjust the air pressure value p of the air chamber 42 to satisfy p2<p≤p3;

[0079] S3.21. After a preset time, if P does not satisfy p2<p≤p3, an alarm is issued to indicate that there is a sealing problem with the detection airbag 4;

[0080] S3.3, if the working state value satisfies the preset third working range, that is, V≥V3, Q≥Q3, the stiffness adjustment component 5 is controlled to exhaust the air chamber 42, reduce the air pressure in the air chamber 42, or maintain the air pressure in the air chamber 42 unchanged, and adjust the inflation stiffness of the airbag body 4 to the preset third stiffness range, that is, adjust the air pressure value p of the air chamber 42 to satisfy p3<p≤p4;

[0081] S3.31. After a preset time, if P does not satisfy p3<p≤p4, an alarm is issued to indicate that there is a sealing problem with the detection airbag 4;

[0082] S3.4. If the working state value satisfies the preset peak working range, that is, V2≤V<V3, Q2≤Q<Q3, the exhaust valve 52 is controlled to open, the air chamber 42 is exhausted, the air pressure in the air chamber 42 is reduced, or the air pressure in the air chamber 42 is maintained unchanged, and the inflation stiffness of the airbag body 4 is adjusted to the preset peak stiffness range, that is, the air pressure value p of the air chamber 42 is adjusted to satisfy p5<p<p6.

[0083] S3.41, after the preset time, if P does not satisfy p5<p<p6, an alarm is issued to indicate that there is a sealing problem with the detection airbag 4;

[0084] Theoretically, in order to ensure that the airbag body 4 continues to maintain a good vibration isolation and noise reduction capability, the inflation stiffness of the airbag body 4 should be increased with the increase of the working intensity of the booster pump 3, that is, the greater the working state value of the booster pump 3, the greater the inflation stiffness of the airbag body 4. However, in actual work, there are the following problems: that is, when the opening of the Hall switch faucet 25 of the reverse osmosis water purification equipment reaches the maximum value, the booster pump 3 will provide a greater pressure to meet the requirements, and its motor operating speed V will reach a peak value, that is, the booster pump 3 will enter a peak working state. In this working state, the booster pump 3 runs at high speed. Due to the interaction of its internal mechanical components and the dynamic effects of the fluid, the resonance phenomenon of the booster pump 3 will be significantly enhanced, causing its vibration frequency to surge and propagate high-frequency noise outward.

[0085] To this end, by exhausting the air chamber 42 when the boost pump 3 reaches the peak working range, the working stiffness of the airbag 4 is reduced in reverse, thereby reducing the resonance frequency of the system and preventing the airbag 4 from resonating with the boost pump 3 due to excessive working stiffness. At the same time, reducing the inflation stiffness can increase the volume change space inside the airbag 4, improve the acoustic impedance of the airbag 4, increase the dissipation of sound waves in the airbag 4, increase the airbag 4's ability to absorb and offset high-frequency noise, and further reduce the noise level.

[0086] In this embodiment, when “controlling the stiffness adjustment component 5 to increase the air pressure in the air chamber 42”, specifically: by presetting an air pump 51 connected to the bottom end of the air chamber 42, gas is pumped into the air chamber 42 from the bottom end of the air chamber 42 to increase the air pressure in the air chamber 42;

[0087] In this embodiment, when "the stiffness adjustment component 5 is controlled to reduce the air pressure in the air chamber 42", specifically: the exhaust valve 52 connected to the top of the air chamber 42 is opened, and the gas is discharged from the top of the air chamber 42 to reduce the air pressure in the air chamber 42. At the same time, the gas is pumped into the air chamber 42 from the bottom of the air chamber 42 through the air pump 51, so that the air outlet from the top of the air chamber 42 is greater than the air intake at the bottom, forming a gas surplus to reduce the air pressure in the air chamber 42.

[0088] Through the above technical solution, the structural stability of the airbag body 4 during the filling and discharging of the air chamber 42 is improved by inflating the bottom and deflating the top. The specific technical effects can be referred to the first embodiment above, which will not be repeated here. In addition, the step of "reducing the air pressure in the air chamber 42 and reducing the overall inflation stiffness of the airbag body 4" is achieved by "exhausting the top of the air chamber 42 and inflating the bottom synchronously to form a gas surplus". This allows the bottom of the airbag body 4 to maintain sufficient support during the depressurization process, avoiding the occurrence of "excessive deformation of the airbag body 4 due to the pressure of the booster pump 3 during the depressurization process". It should be noted that the "gas surplus" mentioned in this article borrows the concept of "surplus" in economics, which means the difference between the air output and the air intake of a sealed space when its air output is greater than its air intake.

[0089] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A method for reducing noise of a water purification device, which is suitable for reducing noise of a water purification device with a built-in booster pump (3), and is characterized by: include: An air bag body (4) is arranged inside a housing (1) of the water purification device, and an air chamber (42) capable of sealing and containing gas is arranged inside the air bag body (4). The booster pump (3) is supported and positioned by the air bag body (4), and mechanical vibration transmitted to the outside by the booster pump (3) during operation is blocked and suppressed to reduce noise; Obtaining the working state value of the booster pump (3) and the stiffness detection value of the airbag body (4); The working state value at least includes the working speed of the booster pump (3); The working state value of the booster pump (3) is compared with a preset trigger working range, and according to the comparison result, the air pressure in the air chamber (42) is increased or decreased or the air pressure in the air chamber (42) is maintained unchanged, so as to dynamically adjust the stiffness detection value of the airbag body (4) to the preset stiffness range.

2. The method for reducing noise of a water purification device according to claim 1, characterized in that: Also includes: The trigger working range at least includes a first trigger range and a second trigger range with increasing working intensity in sequence; If the working state value of the booster pump (3) is within a first trigger range, the air pressure in the air chamber (42) is reduced or maintained, and the stiffness detection value is adjusted to a preset first stiffness range; If the working state value of the booster pump (3) is within the second trigger range, the air pressure in the air chamber (42) is increased, and the stiffness detection value is adjusted to a preset second stiffness range.

3. The method for reducing noise of a water purification device according to claim 2, characterized in that: The trigger working range also includes a peak working range, the working intensity of the peak working range is greater than that of the second trigger range, and if the working state value of the booster pump (3) is within the peak working range, the air pressure in the air chamber (42) is reduced, and the stiffness detection value is adjusted to a preset peak stiffness range.

4. The method for reducing noise of a water purification device according to claim 1, characterized in that: The stiffness detection value at least includes the air pressure value of the air chamber (42).

5. The method for reducing noise of a water purification device according to claim 1, characterized in that: The working status value also includes the output flow rate of the booster pump (3).

6. The method for reducing noise of a water purification device according to claim 1, characterized in that: After "comparing the working state value of the booster pump (3) with the preset trigger working range, and according to the comparison result, increasing or decreasing the air pressure in the air chamber (42) or maintaining the air pressure in the air chamber (42) unchanged, and dynamically adjusting the stiffness detection value of the airbag body (4) to a preset stiffness range", it is determined whether to issue an alarm according to the stiffness detection value of the airbag body (4).

7. The method for reducing noise of a water purification device according to claim 6, characterized in that: “Determining whether to issue an alarm based on the stiffness detection value of the airbag body (4)” includes: After a preset time, if the stiffness detection value is within a preset stiffness range, no alarm is issued; If the stiffness detection value exceeds a preset stiffness range, an alarm preset on the water purification device is controlled to sound an alarm.

8. The method for reducing noise of a water purification device according to any one of claims 1 to 7, characterized in that: “Increasing the air pressure in the air chamber (42)” includes: pumping gas into the air chamber (42) from the bottom end of the air chamber (42) through an air pump (51) pre-connected to the bottom end of the air chamber (42), thereby increasing the air pressure in the air chamber (42); “Lowering the air pressure in the air chamber (42)” includes: discharging gas from the top of the air chamber (42) out of the air chamber (42) through an exhaust valve (52) pre-connected to the top of the air chamber (42), thereby lowering the air pressure in the air chamber (42).

9. The method for reducing noise of a water purification device according to claim 8, characterized in that: "Lowering the air pressure in the air chamber (42)" also includes: while exhausting the gas from the air chamber (42) through the exhaust valve (52), the gas is simultaneously pumped into the air chamber (42) from the bottom end of the air chamber (42) through the air pump (51), and the air outlet at the top end of the air chamber (42) is greater than the air intake at the bottom end, forming a gas surplus to reduce the air pressure in the air chamber (42).

10. A water purification device, characterized in that: The water purification device includes a processor configured with operating instructions executable by the processor to execute the noise reduction method for water purification equipment according to any one of claims 1 to 9.

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