CN108662075B - Damping system and washing machine including the same - Google Patents
Damping system and washing machine including the same Download PDFInfo
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- CN108662075B CN108662075B CN201710188347.7A CN201710188347A CN108662075B CN 108662075 B CN108662075 B CN 108662075B CN 201710188347 A CN201710188347 A CN 201710188347A CN 108662075 B CN108662075 B CN 108662075B
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- 238000013016 damping Methods 0.000 title claims abstract description 53
- 238000005406 washing Methods 0.000 title claims abstract description 33
- 230000035939 shock Effects 0.000 claims abstract description 70
- 239000006096 absorbing agent Substances 0.000 claims abstract description 53
- 239000012530 fluid Substances 0.000 claims abstract description 26
- 230000005484 gravity Effects 0.000 claims abstract description 10
- 239000010720 hydraulic oil Substances 0.000 claims description 12
- 229920002545 silicone oil Polymers 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 13
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 238000004891 communication Methods 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 9
- 230000033001 locomotion Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 238000005192 partition Methods 0.000 description 6
- 238000003754 machining Methods 0.000 description 5
- 239000000725 suspension Substances 0.000 description 5
- 238000007906 compression Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
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Classifications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
- F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
- F16F9/19—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein with a single cylinder and of single-tube type
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3214—Constructional features of pistons
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
- F16F9/3405—Throttling passages in or on piston body, e.g. slots
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Textile Engineering (AREA)
- Fluid-Damping Devices (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
Abstract
The invention belongs to the technical field of washing machines, and particularly provides a damping system and a washing machine comprising the same. The invention aims to solve the problem that after the existing shock absorber is assembled, the initial gravity center of a roller assembly deviates due to the difference of assembly and processing, so that the shock absorption effect is inconsistent. To this end, the damping system of the present invention comprises at least two dampers, each of which comprises an inner cavity filled with a fluid, each of which generates damping by the flow of the fluid in the inner cavity, the inner cavity of one of the at least two dampers is communicated with the inner cavity of the other damper through a pipeline, and the fluid can flow between the two dampers through the communication of the pipeline in the working state of the dampers, so that the stress of each damper is more uniform, and the problem of inconsistent damping effect caused by the initial gravity center deviation of the washing tub is solved.
Description
Technical Field
The invention belongs to the technical field of washing machines, and particularly provides a damping system and a washing machine comprising the same.
Background
The washing machine is a clean electrical appliance for washing clothes by using electric energy, and becomes an essential household electrical appliance in daily life with the acceleration of life rhythm and high requirements of people on living comfort. However, the washing machine generates great vibration and noise during washing, rinsing and dehydrating processes, thereby causing inconvenience to normal life of people.
In order to solve the problem of excessive vibration and noise during the operation of the washing machine, the tub is generally supported on the casing of the washing machine by a plurality of vibration dampers. The invention patent application with publication number CN1718902A discloses a "damper for washing machine". Specifically, the damper for the washing machine comprises a cylinder barrel and a piston rod inserted in the cylinder barrel, wherein a piston is arranged at the end of the piston rod, and the piston divides the cylinder barrel into an upper cylinder barrel chamber and a lower cylinder barrel chamber. In addition, the piston is also provided with a throttling passage for communicating the cylinder barrel upper chamber and the cylinder barrel lower chamber. Fluid is injected into the cylinder barrel upper chamber and the cylinder barrel lower chamber, and in the process of sliding of the plunger, the fluid flows between the cylinder barrel upper chamber and the cylinder barrel lower chamber through the throttling passage, so that fluid damping is generated, and the aim of reducing the vibration of the washing machine is fulfilled. However, in the prior art, each damper functions independently of each other, and after the installation is completed, the center of gravity of the outer tub is slightly different due to differences in the suspension position, the support position, the machining accuracy, the suspension spring machining damping machining consistency, the assembly accuracy, and the like, so that even if the same damper is used in the same batch of washing machines, the damping effect is uneven, and the damping effect is poor as a whole.
In addition, when the plunger moves telescopically in the cylinder, the volumes of the upper chamber and the lower chamber of the cylinder are correspondingly increased or reduced, so that the damping force applied to the damper in the whole movement stroke of the plunger is basically kept unchanged. Therefore, the damper for the washing machine cannot increase the damping force generated by the damper according to the increase of the movement stroke of the plunger relative to the cylinder, and thus, the damping effect is poor particularly for severe vibration.
Accordingly, there is a need in the art for a new shock absorbing system that addresses the above-mentioned problems.
Disclosure of Invention
In order to solve the above problems in the prior art, namely to solve the problem that the existing shock absorbers cannot adapt to the uneven damping effect caused by the difference of the gravity centers of the outer cylinders due to the difference of the suspension positions, the processing precision of the support positions, the processing consistency of the suspension springs and the processing consistency of the damping and the assembling precision and the like after the installation of the washing machine is completed, the invention provides a damping system, which comprises at least two shock absorbers, wherein each shock absorber comprises an inner cavity filled with fluid, each shock absorber generates damping through the flow of the fluid in the inner cavity, and the inner cavity of one shock absorber in the at least two shock absorbers is communicated with the inner cavity of the other shock absorber through a pipeline.
In the above-described preferred embodiment of the shock absorbing system, each of the shock absorbers includes: a cylinder having a first chamber; the plunger is slidably inserted into a first chamber of the cylinder barrel, a second chamber is arranged in the plunger, and the first chamber and the second chamber jointly form the inner cavity; an orifice is provided in the plunger, the first chamber and the second chamber communicate with each other via the orifice, the fluid flows between the first chamber and the second chamber via the orifice when the plunger slides relative to the cylinder, and the pipe line connects between the first chamber or the second chamber of the one shock absorber and the first chamber or the second chamber of the other shock absorber.
In the above-described preferred embodiment of the shock absorbing system, each of the shock absorbers includes: a cylinder barrel in which the inner cavity is formed; a piston slidably inserted into an inner cavity of the cylinder, dividing the inner cavity into a first chamber and a second chamber; an orifice is provided in the piston, the first chamber and the second chamber communicate with each other via the orifice, the fluid flows between the first chamber and the second chamber via the orifice when the piston slides relative to the cylinder, and the piping connects between the first chamber or the second chamber of the one shock absorber and the first chamber or the second chamber of the other shock absorber.
In a preferred embodiment of the above-described shock absorbing system, an outer diameter of the plunger is set so that the plunger can be slidably brought into close engagement with the cylinder.
In a preferred embodiment of the above damping system, each of the dampers further includes a sealing ring and a first groove for accommodating the sealing ring, and the first groove is disposed on an inner wall of the cylinder or an outer wall of the plunger so that the plunger can be slidably and sealingly engaged with the cylinder.
In a preferred embodiment of the above shock absorbing system, each shock absorber further includes a friction plate and a second groove for accommodating the friction plate, and the second groove is disposed on an inner wall of the cylinder or an outer wall of the plunger, so that the plunger can generate friction damping via the friction plate when sliding relative to the cylinder.
In a preferred embodiment of the above shock absorbing system, a partition is provided at an end of the plunger of each shock absorber, and the orifice is provided in the partition.
In the above-mentioned preferred technical solution of the shock absorbing system, the plunger and the partition plate are of an integral structure.
In a preferred embodiment of the above damping system, the liquid is hydraulic oil or silicone oil, and/or the pipeline is a rubber tube.
The invention also provides a washing machine, which comprises a shell and a drum assembly arranged in the shell, and is characterized by further comprising a damping system, wherein the drum assembly is supported on the shell through the damping system, and the damping system is any one of the damping systems according to the invention.
It can be understood by those skilled in the art that in the preferred embodiment of the present invention, since the inner chambers (e.g., the first chamber or the second chamber) of the two dampers are communicated with each other through the pipeline, the fluid can flow between the two dampers, so that each damper is stressed more uniformly, and the problem of uneven damping effect caused by the deviation of the center of gravity of the drum assembly due to the difference of the suspension position, the support position, the machining precision, the machining consistency of the dampers and the assembly precision is avoided.
Furthermore, as the plunger is provided with the second chamber, the volume of the second chamber is kept unchanged in the process that the plunger performs telescopic motion along the cylinder, when the plunger performs compression motion, the fluid in the second chamber is gradually increased, so that the pressure in the second chamber is gradually increased, and the fluid in the first chamber needs larger force to enter the second chamber, so that the damping force generated by the shock absorber is larger; when the plunger makes stretching movement, the fluid in the second chamber enters the first chamber, the fluid in the second chamber gradually decreases, so that the negative pressure in the second cavity is increased, and the damping force applied to the fluid in the second chamber entering the first chamber is increased. Therefore, in the shock absorber of the invention, as the stroke of the plunger in the cylinder barrel is increased, the damping force applied to the plunger is increased, so that the shock absorption effect of the shock absorber is further enhanced. In other words, the damper can automatically adjust the fluid damping according to various working conditions of the washing machine, for example, under the condition of load, especially under the condition that the dehydration speed is increased from a low speed to a high speed, the damper can ensure large damping force along with the increase of the stroke of the plunger in the cylinder, enhance the damping and keep the stability of the washing machine; when the load is small, the damping damper is in low damping, and particularly when the spin-drying speed is high, the damping force is minimum along with the reduction of the stroke of the plunger in the cylinder, so that the stability of the washing machine is maintained.
Furthermore, the outer wall of the plunger is integrally and tightly connected with the inner wall of the cylinder in a sliding mode, so that the whole structure of the shock absorber is more stable in the process that the plunger slides relative to the inner wall of the cylinder, the problem that the inner wall of the cylinder is inclined and eccentrically worn in the sliding process is solved, and meanwhile compared with the existing damper for the washing machine, a piston and a plunger rod supporting/guiding mechanism at the end part of the cylinder are not needed, the whole structure is simplified, and the manufacturing cost is reduced.
Drawings
FIG. 1 is a schematic view of the installation position of the vibration damping system of the present invention in a washing machine;
FIG. 2 is a cross-sectional view of the shock absorbing system of the present invention;
FIG. 3 is a cross-sectional view of the shock absorber of the present invention;
FIG. 4 is a schematic illustration of the plunger compression process of the shock absorber of the present invention;
figure 5 is a schematic illustration of the plunger extension process of the shock absorber of the present invention.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. For example, although the description is made in connection with hydraulic oil, it is obvious that the invention may be used with other forms of liquid having a certain viscosity, as long as the liquid itself does not corrode the inner wall of the cylinder and the seal; in addition, although the description is made in conjunction with two dampers, the present invention can adjust the number of dampers according to actual situations.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring first to fig. 1 and 2, fig. 1 is a schematic view illustrating an installation position of a vibration damping system of the present invention in a washing machine; figure 2 is a cross-sectional view of the shock absorbing system of the present invention. As shown in fig. 1 and 2, the damping system of the present invention includes a hanging spring 1 and a damper 2, the hanging spring 1 is provided with two and symmetrically placed at both sides of the upper end of a drum assembly 3, and both ends of each hanging spring 1 are respectively connected to the upper end of the drum assembly 3 and an upper panel 4 for suspending the drum assembly 3; the damper 2 is provided with two and symmetrically placed at the lower end of the drum assembly 3, and preferably, the damper 2 includes a cylinder 21 having a first chamber 211, a first fixed end 22 fixedly connected to a first end of the cylinder 21 (the lower end of the cylinder 21 shown in fig. 2), a plunger 23, and a second fixed end 24 fixedly connected to a first end of the plunger 23 (the upper end of the plunger 23 shown in fig. 2). In an assembled state, a second end of the plunger 23 (a lower end of the plunger 23 shown in fig. 2) is slidably inserted into the first cavity 211 of the cylinder 21 from a second end of the cylinder 21 (an upper end of the cylinder 21 shown in fig. 2), the first fixed end 22 is used for connecting the bottom plate 5 of the washing machine, and the second fixed end 24 is used for connecting the lower portion of the drum assembly 3. Of course, it is understood that the first fixed end 22 may be connected to the lower end of the drum assembly 3 and the second fixed end 24 may be connected to the bottom plate 5 of the washing machine without departing from the spirit and scope of the present invention. In addition, although the drawings have been described with two dampers 2 as the preferred embodiments, it is apparent that those skilled in the art can adjust the number of dampers 2 according to the actual situation. With respect to the drum assembly 3, it should be noted that it comprises the inner and outer drums of the washing machine, the damper 2 directly supports the outer drum, but it also carries the weight of the inner drum and therefore serves to damp the vibrations generated by the inner drum.
With continued reference to FIG. 3 and with continued reference to FIG. 2, FIG. 3 is a cross-sectional view of the shock absorber of the present invention. As shown in fig. 2 and 3, it is preferable that the outer wall of the plunger 23 is slidably and tightly engaged with the inner wall of the cylinder 21, and therefore, the entire structure of the shock absorber 2 is more stable, and the plunger 23 does not have a problem of being deflected and eccentric against the inner wall of the cylinder 21 during sliding. As shown in fig. 3, the plunger 23 is provided with a second chamber 231 therein and a partition 26 sealingly provided at a second end thereof, an orifice 27 is provided in the partition 26, the orifice 27 communicates the first chamber 211 and the second chamber 231, the first chamber 211 and/or the second chamber 231 is filled with hydraulic oil 30, and the hydraulic oil 30 can flow back and forth in the first chamber 211 and the second chamber 231 when the plunger 23 slides in the first chamber 211 of the cylinder 21. It will be understood by those skilled in the art that although the diaphragm 26 is shown as a separate member in fig. 2, the diaphragm 26 and the plunger 23 may be of an integral structure, i.e., a cavity is formed directly inside the plunger 23 as the second chamber 231, while the orifice 27 is provided at the second end of the plunger 23; in addition, although the figures have been described with a preferred embodiment of the hydraulic oil 30, it is clear that other fluids, such as silicone oil, may be substituted.
With continued reference to fig. 2 and 3, the shock absorbing system further comprises a pipe 6, preferably, both ends of the pipe 6 are respectively connected to the first chamber 211 of each shock absorber 2. Specifically, the cylinder 21 is further provided with a liquid outlet 61 communicating the first chamber 211 with the pipeline 6, and is fixed by a clamp 62 on the basis that the pipeline 6 is connected with the liquid outlet 61, so that the hydraulic oil 30 in each shock absorber 2 can flow between the two shock absorbers 2 under the communication of the pipeline 6, the damping force generated by each shock absorber 2 is more uniform, and the problem of uneven damping effect caused by the gravity center deviation of the roller assembly 3 is solved. It should be noted that although fig. 2 illustrates the preferred embodiment in which the conduit 6 connects the first chamber 211 of each shock absorber 2, it is obvious that the conduit 6 can also connect the second chamber 231 of each shock absorber 2 as in fig. 1, which also solves the problem of inconsistent damping effect. Even the first chamber of one shock absorber may be connected to the second chamber of another shock absorber by a conduit 6 without departing from the spirit and scope of the present invention.
With continued reference to fig. 2 and 3, one or more circles of first grooves (not labeled) may be disposed on the inner wall of the cylinder 21 along the circumferential direction, and a sealing ring 28 matching with the first grooves is disposed in the first grooves, so as to ensure the sealing between the cylinder 21 and the plunger 23, so that the hydraulic oil 30 in the first chamber 211 and the second chamber 231 does not leak. Alternatively, one or more second grooves (not shown) may be provided on the outer wall of the plunger in the circumferential direction, and a sealing ring 28 matching with the second grooves may be placed in the second grooves to perform the sealing function. In particular, the sealing ring is a rubber sealing ring, or a sealing ring made of other suitable materials.
With continued reference to fig. 2 and 3, the shock absorber further includes a friction plate 29 and a third groove (not labeled) for receiving the friction plate 29. Similarly, a third groove may be provided on the inner wall of the cylinder 21 or the outer wall of the plunger 23 to enable frictional damping via the friction plate 29 when the plunger 23 slides relative to the cylinder 21, thereby further enhancing the shock-absorbing effect of the shock absorber.
Referring again to fig. 1, the present invention also provides a washing machine comprising a drum assembly 3 disposed in a casing (not shown in its entirety), the drum assembly 3 being supported on the casing by a damping system, which is any one of the damping systems according to the present invention.
The operation of the shock absorbing system of the present invention will be briefly described with reference to fig. 4 and 5. FIG. 4 is a schematic illustration of the compression of the plunger 23 of the shock absorbing system of the present invention; figure 5 is a schematic view of the plunger 23 stretching process of the shock absorbing system 2 of the present invention. As shown in fig. 4, when the plunger 23 is forced to slide leftward (in the direction of fig. 4), the friction plate 29 rubs against the outer wall of the plunger 23, and the leftward compression force applied to the plunger 23 is reduced, and in addition, during the leftward sliding of the plunger 23, the volume of the first chamber 211 becomes smaller, the fluid in the first chamber 211 is squeezed, and flows to the second chamber 231 through the orifice 27, and because the orifice 27 is small in size, the hydraulic oil 30 exerts a rightward force on the partition plate 26 when flowing to the second chamber 231, and the leftward movement of the plunger 23 is reduced, so that the vibration is reduced. As shown in fig. 5, when the plunger 23 is forced to slide rightward (in the direction of fig. 5), the friction plate 29 rubs against the outer wall of the plunger 23, so as to slow down the rightward sliding of the plunger 23, in addition, during the rightward sliding of the plunger 23, the hydraulic oil 30 in the second chamber 231 enters the first chamber 211, the fluid in the second chamber 231 gradually decreases, so that the hydraulic oil 30 in the second chamber 231 enters the first chamber 211, and because the volume of the second chamber 231 is not changed, the negative pressure in the second chamber 231 increases, so that the damping force applied to the hydraulic oil 30 in the second chamber 231 entering the first chamber 211 increases, thereby slowing down the rightward movement of the plunger 23. In addition, because the outer wall of the plunger 23 is slidably and tightly engaged with the inner wall of the cylinder 21, the overall structure of the damper 2 is more stable, and the problems of deflection and eccentric wear of the piston on the inner wall of the cylinder 21 during sliding in the prior art are avoided.
In addition, since the first chambers 211 of the two dampers 2 are connected by the pipe 6, when the vibration forces acting on the two dampers 2 are not uniform due to the deviation of the initial center of gravity of the tub, the liquid 30 can flow between the first chambers 211 of the two dampers 2 to automatically adjust the pressure of the first chambers 211 of the two dampers 2 and the moving speed and stroke of the plunger 23 in the first chamber 211, so that the damping force generated by each damper 2 is more uniform, and the problem of the non-uniform damping effect due to the deviation of the initial center of gravity of the tub is avoided.
In another preferred embodiment of the invention, not shown, the shock-absorbing system of the invention comprises at least two shock absorbers, each shock absorber comprising: a cylinder barrel in which an inner cavity is formed; a piston slidably disposed in the bore of the cylinder to divide the bore into a first chamber and a second chamber; an orifice is provided in the piston so that the first and second chambers can communicate with each other via the orifice, and fluid flows between the first and second chambers via the orifice when the piston slides relative to the cylinder tube, and likewise, the shock absorber system further includes a pipe line that communicates the first or second chamber of the two shock absorbers with the first or second chamber of the other shock absorber. In this embodiment, the first chamber or the second chamber of the two dampers is also communicated with the first chamber or the second chamber of the other damper through the pipe, thereby avoiding the problem of inconsistent damping effect caused by the deviation of the initial gravity center of the tub.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (8)
1. A vibration damping system for a washing machine, the washing machine comprising a housing and a drum assembly disposed in the housing, the vibration damping system comprising at least two vibration dampers disposed at a lower end of the drum assembly so as to: the roller assembly is supported on the housing by the shock absorbing system,
each of the shock absorbers including an inner chamber filled with a fluid, each of the shock absorbers generating shock-absorbing damping by the flow of the fluid in the inner chamber,
the inner cavity of one of the at least two shock absorbers is communicated with the inner cavity of the other shock absorber through a pipeline;
each shock absorber comprises a cylinder and a plunger, the cylinder is provided with a first chamber, the plunger is slidably inserted into the first chamber of the cylinder, a second chamber is arranged in the plunger, and the first chamber and the second chamber jointly form the inner cavity; a throttle hole is arranged on the plunger; or, each of the shock absorbers includes a cylinder and a piston, the inner chamber is formed in the cylinder, and the piston is slidably inserted into the inner chamber of the cylinder to divide the inner chamber into a first chamber and a second chamber; the piston is provided with a throttling hole;
the first chamber and the second chamber communicate with each other via the orifice through which the fluid flows between the first chamber and the second chamber when the plunger/piston slides relative to the cylinder;
the conduit is connected between the first chamber of the one shock absorber and the first chamber of the other shock absorber or the conduit is connected between the second chamber of the one shock absorber and the second chamber of the other shock absorber such that:
when the vibration forces acting on the two dampers are not uniform due to the initial center of gravity deviation of the drum assembly, the fluid may flow between the first chambers of the two dampers or the second chambers of the two dampers each other.
2. The system of claim 1, wherein an outer diameter of the plunger is configured to enable the plunger to slidably engage closely with the cylinder.
3. The system of claim 2, wherein each of the shock absorbers further comprises a seal ring and a first groove for receiving the seal ring, the first groove being disposed on an inner wall of the cylinder or an outer wall of the plunger such that the plunger is slidably and sealingly engageable with the cylinder.
4. The system of claim 1, wherein each of the shock absorbers further comprises a friction plate and a second groove for receiving the friction plate, the second groove being provided on an inner wall of the cylinder or an outer wall of the plunger such that the plunger is capable of generating frictional damping via the friction plate when sliding relative to the cylinder.
5. The shock absorbing system of claim 1, wherein the end of the plunger of each shock absorber is provided with a diaphragm, and the orifice is provided in the diaphragm.
6. The system of claim 5, wherein the plunger is of unitary construction with the diaphragm.
7. The system according to claim 1, characterized in that said fluid is hydraulic oil or silicone oil and/or said conduit is a rubber tube.
8. A washing machine, characterized in that it comprises a damping system according to any one of claims 1 to 7.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710188347.7A CN108662075B (en) | 2017-03-27 | 2017-03-27 | Damping system and washing machine including the same |
| PCT/CN2018/078351 WO2018177096A1 (en) | 2017-03-27 | 2018-03-07 | Damping system and laundry machine comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710188347.7A CN108662075B (en) | 2017-03-27 | 2017-03-27 | Damping system and washing machine including the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108662075A CN108662075A (en) | 2018-10-16 |
| CN108662075B true CN108662075B (en) | 2022-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710188347.7A Active CN108662075B (en) | 2017-03-27 | 2017-03-27 | Damping system and washing machine including the same |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108662075B (en) |
| WO (1) | WO2018177096A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111113131B (en) * | 2019-12-30 | 2022-09-27 | 湖南中大创远数控装备有限公司 | Main shaft damping mechanism |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08229290A (en) * | 1995-02-28 | 1996-09-10 | Sanyo Electric Co Ltd | Drum type washing machine |
| CN2422320Y (en) * | 2000-03-15 | 2001-03-07 | 黄国兴 | Shock absorber for drum type washing machine |
| CN105443636A (en) * | 2015-12-24 | 2016-03-30 | 华侨大学 | Mixed communication type oil-gas shock attenuation device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100469470B1 (en) * | 2003-01-30 | 2005-02-02 | 엘지전자 주식회사 | Damper using thermal transformation and washing machine having the same |
| KR101165093B1 (en) * | 2004-08-09 | 2012-07-12 | 엘지전자 주식회사 | A damper of a drum type washing machine |
| KR100777299B1 (en) * | 2006-06-09 | 2007-11-20 | 엘지전자 주식회사 | Washing or drying machine |
| CN201027883Y (en) * | 2007-01-31 | 2008-02-27 | 钟祥市东风捷祥汽车减振器有限公司 | Oil-gas separated double-cylinder vibration absorber |
| CN101037840A (en) * | 2007-04-17 | 2007-09-19 | 海尔集团公司 | Barrel washing machine having magnetic rheologic active vibration damper |
| CN104455161A (en) * | 2014-11-18 | 2015-03-25 | 常州新北区孟河大海灯具厂 | Piston type liquid damping vibration attenuation mechanism |
| CN205806309U (en) * | 2016-07-08 | 2016-12-14 | 郭怀宝 | A kind of hydroelastic system damping device |
-
2017
- 2017-03-27 CN CN201710188347.7A patent/CN108662075B/en active Active
-
2018
- 2018-03-07 WO PCT/CN2018/078351 patent/WO2018177096A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08229290A (en) * | 1995-02-28 | 1996-09-10 | Sanyo Electric Co Ltd | Drum type washing machine |
| CN2422320Y (en) * | 2000-03-15 | 2001-03-07 | 黄国兴 | Shock absorber for drum type washing machine |
| CN105443636A (en) * | 2015-12-24 | 2016-03-30 | 华侨大学 | Mixed communication type oil-gas shock attenuation device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018177096A1 (en) | 2018-10-04 |
| CN108662075A (en) | 2018-10-16 |
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Effective date of registration: 20220117 Address after: 266101 south side of Tuanjie road and west side of zonger Road, Huangdao District, Qingdao City, Shandong Province Applicant after: QINGDAO HAIER WASHING ELECTRIC APPLIANCES Co.,Ltd. Applicant after: Haier Smart Home Co., Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant before: QINGDAO HAIER DRUM WASHING MACHINE Co.,Ltd. |
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