CN108194750B - Water flow pressure pulsation attenuation device and water household electrical appliance thereof - Google Patents
Water flow pressure pulsation attenuation device and water household electrical appliance thereof Download PDFInfo
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- CN108194750B CN108194750B CN201810010643.2A CN201810010643A CN108194750B CN 108194750 B CN108194750 B CN 108194750B CN 201810010643 A CN201810010643 A CN 201810010643A CN 108194750 B CN108194750 B CN 108194750B
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- air bag
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/04—Devices damping pulsations or vibrations in fluids
- F16L55/045—Devices damping pulsations or vibrations in fluids specially adapted to prevent or minimise the effects of water hammer
- F16L55/05—Buffers therefor
- F16L55/052—Pneumatic reservoirs
- F16L55/053—Pneumatic reservoirs the gas in the reservoir being separated from the fluid in the pipe
- F16L55/054—Pneumatic reservoirs the gas in the reservoir being separated from the fluid in the pipe the reservoir being placed in or around the pipe from which it is separated by a sleeve-shaped membrane
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/04—Devices damping pulsations or vibrations in fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/04—Devices damping pulsations or vibrations in fluids
- F16L55/041—Devices damping pulsations or vibrations in fluids specially adapted for preventing vibrations
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pipe Accessories (AREA)
Abstract
The invention relates to the technical field of fluid noise reduction, in particular to a water flow pressure pulsation attenuation device and water household electrical appliances, and the invention comprises the following components: it is connected with the water pump, includes: the air bag type air conditioner comprises an outer shell with a cavity, wherein the cavity in the outer shell is divided into an air bag cavity and a liquid cavity, and an air bag is filled in the air bag cavity; a flow baffle is arranged in the liquid cavity, the flow baffle divides the liquid cavity into a liquid inlet cavity and a liquid outlet cavity, and the liquid inlet cavity and the liquid outlet cavity are communicated with each other; the liquid outlet cavity is connected with a liquid outlet, the liquid outlet is connected with a water outlet pipeline, a liquid inlet is arranged in the liquid inlet cavity and is used for being connected with the outlet end of the water pump; the water flow pressure pulsation damping device is provided with the air bag, and the air bag absorbs the pressure pulsation of water flow, so that the vibration of a water outlet pipeline connected with the outlet end of the water pump is reduced, the vibration of a machine body is reduced, and the noise is effectively inhibited.
Description
Technical Field
The invention relates to the technical field of fluid noise reduction, in particular to a water flow pressure pulsation attenuation device and a water household appliance with the water flow pressure pulsation attenuation device.
Background
Along with people's performance requirement to water appliances such as purifier is higher and higher, the powerful water pump of high rotational speed, if: diaphragm pumps, also beginning to be applied to water appliances; although the performance of the water household appliance is improved by using the high-rotating-speed and high-power water pump, huge noise and vibration are brought at the same time, and the user experience is seriously influenced; the diaphragm pump has the characteristic of flow pulsation, and the flow pulsation can cause pressure pulsation in the water pipe to cause vibration of a water outlet pipeline connected with the outlet end of the water pump, so that vibration of a main machine body of the water household appliance is induced, which is one of main sources of noise of the water household appliance, and the existing water household appliance cannot well inhibit the noise.
Disclosure of Invention
In order to overcome the above drawbacks, the present invention provides a pulsation damping device and a household water appliance with good damping and noise reduction effects.
The purpose of the invention is realized by the following technical scheme:
the invention relates to a water flow pressure pulsation damping device, which is used for being connected with a water pump and comprises: the air bag type air conditioner comprises an outer shell with a cavity, wherein the cavity in the outer shell is divided into an air bag cavity and a liquid cavity, and an air bag is filled in the air bag cavity;
a flow baffle is arranged in the liquid cavity, the flow baffle divides the liquid cavity into a liquid inlet cavity and a liquid outlet cavity, and the liquid inlet cavity and the liquid outlet cavity are communicated with each other; the liquid outlet cavity is communicated with a liquid outlet on the outer shell, a water outlet pipeline is connected to the liquid outlet, and a liquid inlet is arranged in the liquid inlet cavity and is used for being connected with the outlet end of the water pump.
In the present invention, the liquid inlet is aligned with the balloon lumen.
In the invention, the water flow pressure pulsation damping device further comprises a limiting piece for positioning the air bag, and the limiting piece divides the cavity of the outer shell into the air bag cavity and the liquid cavity.
In the invention, the limiting piece is a limiting plate, the limiting plate is provided with a grid or more than two through holes, and the through holes are uniformly distributed on the limiting plate.
In the invention, the limiting part is a flexible membrane, and the membrane is adhered between the air bag cavity and the liquid cavity.
In the invention, the end cover outer shell is composed of a main body part and an end cover which are matched with each other, and the end cover covers one end of the air bag cavity and one end of the liquid cavity.
In the invention, the limiting part and the flow baffle are perpendicular to each other, and the limiting part and the flow baffle are spaced from each other, so that a fluid channel for communicating the liquid inlet cavity and the liquid outlet cavity is formed between the flow baffle and the limiting part.
In the present invention, the balloon is filled with air and/or helium.
In the invention, the outer side of the air bag is tightly attached to the inner wall of the air bag cavity.
In the present invention, the cross-sectional area of the balloon chamber is smaller than the cross-sectional area of the liquid chamber.
The invention is a water household electrical appliance, comprising: the device comprises a device shell, a main machine body arranged in the device shell, a water pump and the water flow pressure pulsation attenuation device, wherein the outlet end of the water pump is connected with the liquid inlet of the water flow pressure pulsation attenuation device, and the water pump is a diaphragm pump.
In the present invention, the main body includes: a water dispenser or a water purifier.
The water flow pressure pulsation damping device is provided with the air bag, and the air bag absorbs the pressure pulsation of water flow, so that the vibration of a water outlet pipeline connected with the outlet end of the water pump is reduced, the vibration of a machine body is reduced, and the noise is effectively inhibited.
Drawings
For the purpose of easy explanation, the present invention will be described in detail with reference to the following preferred embodiments and the accompanying drawings.
FIG. 1 is a schematic cross-sectional view of a water flow pressure pulsation damping apparatus according to the present invention;
FIG. 2 is a schematic longitudinal sectional view of the water flow pressure pulsation damping device of the present invention;
fig. 3 is a schematic view of an assembly structure of the water home appliance of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the description of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. Either mechanically or electrically. Either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The following describes a water flow pressure pulsation damping device according to an embodiment of the present invention, referring to fig. 1 to 3, which is used in connection with a water pump 200, and includes:
the air bag type water heater comprises an outer shell 101 with a cavity, wherein the cavity in the outer shell 101 is divided into an air bag cavity 112 and a liquid cavity, the air bag cavity 112 is filled with an air bag 102, the air bag 102 can be fixed in the air bag cavity 112 in a sticking, clamping and other modes, and the liquid cavity is used for water flow to pass through;
a flow baffle plate 103 is arranged in the liquid cavity, the flow baffle plate 103 divides the liquid cavity into a liquid inlet cavity 104 and a liquid outlet cavity 105, and the liquid inlet cavity 104 is communicated with the liquid outlet cavity 105; the liquid outlet cavity 105 is communicated with a liquid outlet 107 on the outer shell 101, a water outlet pipe 108 is connected to the liquid outlet 107, a liquid inlet 106 is arranged in the liquid inlet cavity 104, and the liquid inlet 106 is used for being connected with an outlet end of the water pump 200.
Wherein the air bag 102 is a body filled with gas in a flexible rubber capsule, which uses the compressibility of the gas to realize the elastic action; the water flow output from the outlet end of the water pump 200 has large pressure pulsation, so that the air bag 102 arranged in the outer shell 101 can effectively absorb the water flow impact pulsating pressure and reduce the water flow pressure pulsation in the outer shell 101; and the turbulence vortex generated by the water flow flowing in the liquid cavity is destroyed and restrained by the baffle plate 103, so the pressure pulsation of the water flow at the output end is greatly reduced after the water flow passes through the water flow pressure pulsation damping device through the mutual matching of the air bag 102 and the baffle plate 103 in the outer shell 101.
The water flow output by the water pump 200 enters the liquid inlet cavity 104 through the liquid inlet 106; through the slow flow in the liquid inlet cavity 104, the water flow impact pulse pressure can be absorbed by the air bag 102; the whirling motion generated by the turbulent flow of the water flow is destroyed and suppressed by the baffle plate 103; the water then passes through the baffle plate 103 into the outlet chamber 105 and out of the inlet port 106.
In this embodiment, the inlet port 106 is aligned with the balloon lumen 112. Because the water flow flowing out from the outlet end of the water pump 200 is pressurized by the water pump 200, the water flow impact pulsating pressure of the water flow is large, the liquid inlet 106 on the outer shell 101 is aligned to the air bag cavity 112, so that the water flow entering the outer shell 101 can directly impact the air bag 102, the water flow impact pulsating pressure is directly absorbed by the air bag 102, the vibration of the outer shell 101 caused by the direct impact of the input water flow on the outer shell 101 is effectively avoided, and the good noise suppression effect is achieved.
In this embodiment, the water flow pressure pulsation damping device further includes a limiting member 103 for positioning the air bag 102, the limiting member 103 divides the hollow cavity of the outer housing 101 into the air bag cavity 1121 and the liquid cavity, which enables the air bag 102 to be fixedly installed in the air bag cavity 112, and ensures the position relationship between the air bag 102 and the liquid inlet 106.
In this embodiment, the limiting member 109 is a limiting plate, a grid or two or more through holes are provided on the limiting plate, and the through holes are uniformly distributed on the limiting plate; the water flow entering the outer shell 101 from the liquid inlet 106 passes through the perforations and the grids on the limiting plate and directly impacts the air bag 102, and the air bag 102 absorbs the water flow impact pulsating pressure, so as to achieve the effect of noise suppression. And the perforations uniformly distributed on the limiting plate can uniformly apply water pressure pulsation on the air bag 102, so that the pressure pulsation can be buffered.
In another embodiment, the limiting member 109 is a flexible membrane, which is adhered between the air bag cavity 112 and the liquid cavity, and the membrane is a flexible metal film or plastic film, the water flow entering the outer shell 101 from the liquid inlet 106 directly impacts the membrane to deform the membrane, and the other surface of the membrane is adhered to the air bag 102, which effectively transmits the pressure to the air bag 102, and then absorbs the water flow impact pulsating pressure through the air bag 102 to achieve the effect of noise suppression; alternatively, the limiting member 109 may be a limiting plate without a through hole, and the limiting plate may move up and down within a certain range, and when the liquid inlet 106 enters the water flow in the outer shell 101, the water flow directly impacts the limiting plate, so that the limiting plate moves up and down, the air bag 102 is compressed, and the pressure can be effectively transmitted to the air bag 102, thereby achieving the effect of noise suppression.
In this embodiment, the end cap outer casing 101 is composed of a main body portion and an end cap 110, the end cap 110 seals an end portion of the outer casing 101, the end cap 110 is provided with the liquid outlet 107, and the water outlet pipe 108 is installed on the end cap 110 and is communicated with the liquid outlet 107. In the process of assembling the airbag 102 of the embodiment, a limiting plate is fixed between the airbag cavity 112 and the liquid cavity by welding, adhering and the like; the pre-fabricated balloon 102 is then filled into the balloon lumen 112 and re-inflated to a predetermined pressure. Then, the end cover 110 and the outer shell 101 are connected together in a hot melting mode to form a closed cavity; the assembly is simple and efficient.
In the present invention, the end cap 110 is disposed at one end of the liquid outlet cavity 105, and the liquid outlet 107 is disposed on the end cap 110 and aligned with the flow baffle 103, so that the water flowing through the flow baffle 103 and into the liquid outlet cavity 105 can be directly output from the liquid outlet 107, the water flowing is smoother, and the noise generated by the water impacting the inner side of the outer shell 101 is reduced.
In the present invention, the limiting member 109 and the flow baffle plate 103 are perpendicular to each other, the flow baffle plate 103 is semicircular, and the limiting member 109 and the flow baffle plate 103 are spaced from each other, such that a fluid channel 111 for communicating the liquid inlet cavity 104 and the liquid outlet cavity 105 is formed between the flow baffle plate 103 and the limiting member 109, and the flow baffle plate 103 is disposed at a side close to the liquid inlet cavity 104. Due to the blocking of the flow blocking plate 103, after impacting the air bag 102, water can only enter the liquid outlet cavity 105 from the fluid passage 111 between the top of the flow blocking plate 103 and the surface of the limiting member 109, which increases the contact area between the water and the air bag 102 to increase the noise reduction effect.
In this embodiment, the bladder 102 is filled with air and/or helium. If the vibration damping effect is better, gas with the density different from that of air can be filled, and the frequency of absorbing pulsation is adjusted through the gas density; among the preferred gases are: helium, a combination gas of helium and air, and the like.
In the present invention, the outer side of the balloon 102 is closely attached to the inner wall of the balloon cavity 112, which enables the balloon 102 to completely fill the balloon cavity 112 and more effectively receive the pulsating pressure of the water flow.
In the present invention, the cross-sectional area of the air bag chamber 112 is smaller than that of the liquid chamber, and the larger liquid chamber can realize a slow flow effect on the water flow so as to further reduce the pulsating pressure of the water flow.
Referring to fig. 3, the present invention is a water home appliance, including: the device comprises a device shell 400, a main machine body 300 arranged in the device shell 400, a water pump 200 and the water flow pressure pulsation damping device 100, wherein the outlet end of the water pump 200 is connected with the liquid inlet 106 of the water flow pressure pulsation damping device 100, and the water pump 200 is a diaphragm pump.
The diaphragm pump referred to herein is one of the positive displacement pumps; the device changes the volume of a working chamber by means of reciprocating movement of a diaphragm so as to suck and discharge liquid, and can convey various liquid with particles, high-viscosity and volatile liquid.
The water flow output by the diaphragm pump is connected to the water channel plate of the water household appliance after passing through the water flow pressure pulsation reducing device 100, and the pressure pulsation of the water flow output by the diaphragm pump is absorbed by the water flow pressure pulsation reducing device 100, so that the pressure of the water flow output from the water flow pressure pulsation reducing device 100 is less, therefore, the water household appliance is provided with the water flow pressure pulsation reducing device 100, the water flow pressure pulsation output by the diaphragm pump can be effectively relieved, and the overall noise of the water household appliance can be reduced.
In the present invention, the main body 300 includes: a water dispenser or a water purifier. The water dispenser in the embodiment is a device for heating or cooling the barreled purified water and bringing convenience to people to drink; the water purifier is water treatment equipment for carrying out deep filtration and purification treatment on water quality according to the use requirement of the water; the water purifier is a water purifying device which removes or reduces salts in water to a certain degree.
Taking a water purifier as an example, through experimental measurement, the water purifier provided with the water flow pressure pulsation damping device 100 of the present invention achieves a noise reduction effect with a broadband over 3 dB.
In the description of the present specification, reference to the description of the terms "one embodiment", "some embodiments", "an illustrative embodiment", "an example", "a specific example", or "some examples", etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only exemplary of the present invention and should not be taken as limiting the invention, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. A water flow pressure pulsation damping device, in a household water appliance, for connection to a water pump, comprising: the air bag type air conditioner comprises an outer shell with a cavity, wherein the cavity in the outer shell is divided into an air bag cavity and a liquid cavity, and an air bag is filled in the air bag cavity;
a flow baffle is arranged in the liquid cavity, the flow baffle divides the liquid cavity into a liquid inlet cavity and a liquid outlet cavity, and the liquid inlet cavity and the liquid outlet cavity are communicated with each other; the liquid outlet cavity is communicated with a liquid outlet on the outer shell, a water outlet pipeline is connected to the liquid outlet, a liquid inlet is arranged in the liquid inlet cavity and is used for being connected with an outlet end of the water pump, the liquid inlet is aligned with the air bag cavity, water flow in the liquid inlet cavity impacts the air bag, water flow impact pulsating pressure is directly absorbed by the air bag, straight lines connected between any two points in the liquid outlet cavity do not penetrate through an entity structure in the outer shell, and the flow blocking plate is of a single structure.
2. The water flow pressure pulsation damping device according to claim 1, further comprising a stopper for positioning the air bag, the stopper dividing the hollow cavity of the outer housing into the air bag chamber and the liquid chamber.
3. The water flow pressure pulsation damping device according to claim 2, wherein the limiting member is a limiting plate, a grid or perforations are provided on the limiting plate, the number of perforations is two or more, and the perforations are uniformly distributed on the limiting plate.
4. The water flow pressure pulsation damping device according to claim 2, wherein said retaining member is a flexible diaphragm, said diaphragm being adhered between said air bladder chamber and said liquid chamber.
5. The water flow pressure pulsation damping device according to claim 2, wherein the outer housing is formed by a main body and an end cap, the main body and the end cap are engaged with each other, the end cap closes an end of the outer housing, the end cap is provided with the liquid outlet, and the water outlet pipe is mounted on the end cap and is communicated with the liquid outlet.
6. The water flow pressure pulsation damping device according to claim 5, wherein the retaining member and the flow blocking plate are perpendicular to each other and spaced apart from each other such that a fluid passage is formed between the flow blocking plate and the retaining member for communicating the fluid inlet chamber and the fluid outlet chamber.
7. The water flow pressure pulsation damping device according to claim 6, wherein said bladder is filled with air and/or helium.
8. The water flow pressure pulsation damping device according to claim 7, wherein the outer side of the bladder abuts against the inner wall of the bladder lumen.
9. The water flow pressure pulsation damping device according to claim 8, wherein the cross-sectional area of the bladder chamber is smaller than the cross-sectional area of the liquid chamber.
10. A water appliance, comprising: an equipment housing, a main body arranged in the equipment housing, a water pump and a water flow pressure pulsation damping device according to any one of claims 1 to 9, wherein the outlet end of the water pump is connected with the liquid inlet of the water flow pressure pulsation damping device.
11. The water home appliance according to claim 10, wherein the main body comprises: a water dispenser or a water purifier.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810010643.2A CN108194750B (en) | 2018-01-02 | 2018-01-02 | Water flow pressure pulsation attenuation device and water household electrical appliance thereof |
| PCT/CN2018/122195 WO2019134520A1 (en) | 2018-01-02 | 2018-12-19 | Water flow pressure pulsation attenuation device and water appliance having same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810010643.2A CN108194750B (en) | 2018-01-02 | 2018-01-02 | Water flow pressure pulsation attenuation device and water household electrical appliance thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108194750A CN108194750A (en) | 2018-06-22 |
| CN108194750B true CN108194750B (en) | 2022-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810010643.2A Active CN108194750B (en) | 2018-01-02 | 2018-01-02 | Water flow pressure pulsation attenuation device and water household electrical appliance thereof |
Country Status (2)
| Country | Link |
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| CN (1) | CN108194750B (en) |
| WO (1) | WO2019134520A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194750B (en) * | 2018-01-02 | 2022-02-22 | 美的集团股份有限公司 | Water flow pressure pulsation attenuation device and water household electrical appliance thereof |
| CN110307435B (en) * | 2019-07-17 | 2020-10-27 | 安徽海东环保科技有限公司 | PVC resistance to compression bellows |
| CN112128090B (en) * | 2020-07-08 | 2022-02-08 | 宁波方太厨具有限公司 | Water purifier applying elastic wave generator |
| CN114704703B (en) * | 2022-03-15 | 2023-10-13 | 中国船舶集团有限公司第七一一研究所 | Water pipeline silencing device, silencing method and ship |
| CN117052723B (en) * | 2023-10-13 | 2024-01-23 | 南京静宝声学科技有限公司 | Medium-low frequency muffler of centrifugal fan and application method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US3628573A (en) * | 1970-07-21 | 1971-12-21 | Alpura Ag | Diaphragm chamber-damping device for damping fluid shocks in pipe systems |
| US4032265A (en) * | 1974-07-19 | 1977-06-28 | United States Steel Corporation | Suction stabilizer for reciprocating pumps and stabilizing method |
| US4514151A (en) * | 1980-11-24 | 1985-04-30 | Christian Anders | Liquid pulsation dampener device |
| CN104776014A (en) * | 2015-04-17 | 2015-07-15 | 佛山市顺德区美的饮水机制造有限公司 | Water purifier and membrane pump assembly of water purifier |
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| JPH08240202A (en) * | 1995-03-06 | 1996-09-17 | Uchiyama Mfg Corp | Helmholtz hydraulic pressure pulsation filter of gas sealed type |
| US6390132B1 (en) * | 2000-12-07 | 2002-05-21 | Caterpillar Inc. | Fluid stream pulse damper |
| US6901964B2 (en) * | 2001-03-30 | 2005-06-07 | Saturn Electronics & Engineering, Inc. | Vehicle fuel pulse damper |
| DE102005035749A1 (en) * | 2005-07-30 | 2007-02-01 | Hydac Technology Gmbh | Hydraulic accumulator in the form of a suction current stabilizer used in piston and membrane pumps in reactors comprises a housing with a housing part receiving a separating element formed from a plunger or a bellows |
| JP2007271029A (en) * | 2006-03-31 | 2007-10-18 | Aisin Aw Co Ltd | Liquid flow path structure |
| CN104373741A (en) * | 2014-10-14 | 2015-02-25 | 上海大隆机器厂有限公司 | Low-pulsation series capsule type buffer |
| CN205991266U (en) * | 2016-07-21 | 2017-03-01 | 金川集团股份有限公司 | A kind of wear-resisting vertical artesian channel bend |
| CN108194750B (en) * | 2018-01-02 | 2022-02-22 | 美的集团股份有限公司 | Water flow pressure pulsation attenuation device and water household electrical appliance thereof |
-
2018
- 2018-01-02 CN CN201810010643.2A patent/CN108194750B/en active Active
- 2018-12-19 WO PCT/CN2018/122195 patent/WO2019134520A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3628573A (en) * | 1970-07-21 | 1971-12-21 | Alpura Ag | Diaphragm chamber-damping device for damping fluid shocks in pipe systems |
| US4032265A (en) * | 1974-07-19 | 1977-06-28 | United States Steel Corporation | Suction stabilizer for reciprocating pumps and stabilizing method |
| US4514151A (en) * | 1980-11-24 | 1985-04-30 | Christian Anders | Liquid pulsation dampener device |
| CN104776014A (en) * | 2015-04-17 | 2015-07-15 | 佛山市顺德区美的饮水机制造有限公司 | Water purifier and membrane pump assembly of water purifier |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108194750A (en) | 2018-06-22 |
| WO2019134520A1 (en) | 2019-07-11 |
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