CN1071473A

CN1071473A - Prevent the device of noise and vibration

Info

Publication number: CN1071473A
Application number: CN92103961A
Authority: CN
Inventors: 朴鲁烈
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 1991-04-30
Filing date: 1992-04-30
Publication date: 1993-04-28
Anticipated expiration: 2007-04-30
Also published as: JP2648415B2; MY111954A; KR920020001A; JPH05146584A; KR0183665B1; CN1031149C

Abstract

A kind of noise of the washing machine that prevents to support a washing drum 5 and the device of vibration are disclosed, it comprise two magnetic elements 12 and 13, one suspension elements 2 ' and spring 4 '.Acting on magnetic force between two magnetic elements 12 and 13 suspends washing machine drum 5 get up and has prevented downward vibration and secondary vibration.

Description

Prevent the device of noise and vibration

The present invention relates to a kind of device that is used for preventing washing machine noise and vibration, and be particularly related to a kind ofly for will be by the rotor that rotates in wash bucket, the vibration that produces as impeller or agitator or drying tube be reduced to Min. and the method that adopts the magnetic suspension principle that wash bucket etc. is supported prevents the device of washing machine noise and vibration.

Recently, be widely used in family and various manufactory or construction site, therefore increased mechanical noise and mechanical oscillation owing to have the product of motor.Particularly, compare with noise with the vibration of other commodity, the vibration and the noise that produce in the washing machine operation process are more serious, and they have reduced the life-span of washing machine, and also have similar influence near the article being placed on.

For making washing machine running reposefully in a segment length time, wish that vibration is minimum in operation process.Yet because that the wash bucket of washing machine is designed to other auxiliary equipment is vibratile, therefore, it almost is impossible eliminating vibration fully.

Therefore, in washing machine, this vibration must be attenuated at once one low-level, and remain on subsequently that this is low-level.

In a kind of conventional laundry apparatus as shown in Figure 1, support 3 is to be suspended in the washing machine body 1 by elongated suspension 2.At this, be supporting bracket 3, spring 4 is inserted on the end of each suspension 2 that passes support 3.5, one motor 6 of a wash bucket are connected with support 3 with clutch 7.In the inside of wash bucket 5 are drying tubes 8, and impeller 9 is positioned at drying tube 8.Drying tube 8 has a gimbal that is contained in its top.Body 1 contacts with ground by rubber legs 11.

In a kind of like this conventional laundry apparatus, the impeller 9 that the action that motor 6 passes through clutch 7 drives in washing process in the drying tube 8 rotates, and drives drying tube 8 and rotate in the rotary dehydration process.When drying tube 8 or agitator 9 rotations, support 3 and the parts that link to each other vibrate on all directions, and the vibration that produces at the beginning is violent.On-down vibration weakens gradually by the spring 4 that is inserted on each suspension 2, simultaneously, and the centrifugal force of the gimbal 10 of oscillation crosswise by being contained in drying tube 8 tops and slowly weakening.

Yet, each spring 4 on being compressed with buffering-down can cause the generation of secondary vibration immediately after the vibration, and only provide the damping of not half with reaction time of quite growing.And owing to the irregular rotational response sensitivity of spring 4 for very little external impact and drying tube 8 or impeller 9, therefore, spring 4 helps to keep these important relatively vibrations after arriving initial violent vibration weakening to a certain degree.And, for gimbal 10, in order to produce enough centrifugal force, drying tube 8 should with greater than certain speed rotation keeping spin balancing, thereby make the oscillation crosswise of drying tube 8 need one period long period to be weakened.

In a kind of like this conventional laundry apparatus, because the effectiveness in vibration suppression in wash cycle and rotary dehydration process is very little, and keep high vibration in operation process, so the lost of life of washing machine and the excessive noise that produced by this vibration are very disagreeable.And suspension also is difficult to design, because they will bear whole loads of wash bucket and the power that spring produces.

If replace being inserted into the support that spring on the suspension supports wash bucket with a kind of air damper or gas spring, then go up simultaneously ,-following vibration has slightly and weakens, but do not have desirable effect.

The purpose of this invention is to provide a kind of device that prevents washing machine noise and vibration, it can with on the wash bucket-down vibration be attenuated to very soon one low-level and keep low-level vibration.

To achieve these goals, provide a kind of prevent from the to have noise of washing machine of the bucket parts that at least one rotary body is housed and the device of vibration, this device comprises:

The magnetic levitation device that utilizes two magnetic force between the opposite magnetic element that this barrel parts have upwards been suspended; And

Be used for to be suspended in by the bucket parts that magnetic levitation device suspends the draft hitch in the washing machine body.

Further feature and advantage will become more obvious from following description more specifically to the preferred embodiments of the present invention shown in the accompanying drawing, and in the accompanying drawings, identical reference number is generally at the same parts of all view middle fingers, and wherein:

Fig. 1 is the sectional view of a kind of conventional laundry apparatus internal structure of expression;

Fig. 2 is the sectional view of expression internal structure of washing machine of the present invention; And

Fig. 3 is the side view that shows a pith of washing machine vibrationproof process of the present invention.

Fig. 2 represents the structure of the washing machine of a preferred embodiment of the present invention.Wash bucket 5 is arranged in washing machine body 1, and the drying tube 8 that has a gimbal 10 at an upper portion thereof is in wash bucket 5, and an impeller 9 is positioned at drying tube 8.Wash bucket 5 is contained in above the support 3, and drying tube 8 and impeller 9 are installed along the same axis that can rotate respectively.Motor 6 and clutch 7 are contained in the bottom of support 3, and are coupled to each other by driving belt 16.Here, clutch 7 is handled by this way by an operated by solenoid device (not shown), makes the energy of motor 6 send drying tube 8 to during rotary dehydration, and send agitator 9 to during washing.

In a kind of like this washing machine, the support 3 that wash bucket 5 is housed is above floated by magnetic levitation device of the present invention.Magnetic levitation device comprises two

magnetic rings

12 and 13, reaches two magnet yoke elements 14 and 15.The bottom that top magnetic rings 12 and magnet yoke element 14 thereof are fixed on support 3, and following magnetic rings 13 and magnet yoke element 15 thereof are fixed on the bottom of washing machine body 1.Here,

magnetic rings

12 and 13 is made with same size, and pole-

face

12A and 13A have mutually the same polar surfaces to obtain repulsive force to each other.Be used to prevent demagnetization with the

magnet yoke element

14 and 15 that the pole-face 12B that deviates from mutually each other links to each other with 13B.Therefore, the support 3 that wash bucket 5 is installed is upwards floated by repulsive force.Magnetic rings is permanent magnet preferably, but can be electromagnet.

And the support 3 of the wash bucket 5 that will be floated by magnetic levitation device is suspended in draft hitch in the washing machine body and comprises elongated suspension 2' and slide on suspension 2' and be pressed in spring 4' on the support.

According to device of the present invention, as shown in Figure 3, support 3 is floated by the magnetic rings 12 of magnetic levitation device and 13 repulsive force, and goes up suspended so that be suspended in the air from the suspension 2' of draft hitch.When this support 3 produced vibration owing to the running of the parts of top loading, the repulsive force that downward vibration is present between

magnetic rings

12 and 13 suppressed, and the vibration that makes progress is suppressed by the power of spring 4'.That is, when big vibration took place, support 3 overcame repulsive force and elastic force and allows vibration to take place.But the reduction of vibratory output and repulsive force and spring force are avoided as many, therefore, and support 3 slight vibration or not vibration.Particularly, the interval between pole-face 12A and the 13A is narrow more, and two

magnetic rings

12 and 13 applied forces are just big more.And, simultaneously,

magnetic rings

12 and 13 even avoided the repulsive force of spring 4', and can not cause secondary vibration, therefore, effectiveness in vibration suppression is big and have the reaction time faster.

When device of the present invention is used on a kind of washing machine with 6.5 kilograms of capacity, and when on washing machine body, connecting a vibrating sensor, following＜table 1〉be illustrated in the result of startup and normal operation and tempus intercalare measuring vibrations.Table 1 is illustrated in simultaneously apart from the about 1 millimeter noise figure that the place records of washing machine.

＜table 1 〉

		The present invention	Common unit	Comparison example I	Comparison example II
						Vibration (millimeter)	Start	0.52	0.60	0.58	0.56
Normally	0.16	0.40	0.20	0.18
					Intermittently		0.54	0.60	0.56	0.58
Noise (decibel)		47.7	55.2	50.3							49.5

Here, common unit is related with Fig. 1, and example I and example II are about under similarity condition, comprise the structure of air-supported shock absorber and gas spring respectively.

As mentioned above, the invention provides and a kind of the magnetic suspension principle is used for the wash bucket of support washing machine, prevent the device of washing machine noise and vibration, and utilize common helical spring, air-supported shock absorber or gas spring are compared, and this washing machine has higher wash bucket damping efficiency.In addition, the device of the present invention washing machine that the lower noise of a kind of generation is provided, had longer life and can in joyful environment, use.

Although the present invention relates to a kind of device that prevents washing machine noise and vibration, it can be used to have on other commodity of a kind of vibrating body as the wash bucket of washing machine.Although described and drawn the present invention in detail, should be understood that clearly that this only is the mode with explanation and example, can not be used as is restriction, the spirit and scope of the present invention are only limited by the statement of appending claims.

Claims

1, a kind of noise of the washing machine that is used for preventing to have the bucket parts that at least one rotary body is housed and the device of vibration comprise:

The magnetic levitation device that utilizes two magnetic force between the relative magnetic element that the bucket parts are upwards floated; And

Be used for to be suspended in by the drum that magnetic levitation device floats the draft hitch in the washing machine body.

2, a kind of noise of washing machine and device of vibration of preventing as claimed in claim 1, it is characterized in that: described magnetic levitation device constitutes in such a way, be that described bucket parts are floated by the repulsive force of described two magnetic elements, the setting that faces with each other of the pole-face with identical polar of these two magnetic elements.

3, a kind of noise of washing machine and device of vibration of preventing as claimed in claim 1, it is characterized in that described magnetic levitation device constitutes in such a way, be that described bucket parts are floated by the absorbability of described two magnetic elements, the setting that faces with each other of the pole-face with opposite polarity of these two magnetic elements.

4, a kind of noise of washing machine and device of vibration of preventing as claimed in claim 1, it is characterized in that described magnetic levitation device two magnetic elements each all be annular, one of them is contained on the described drum, and another is contained on the described washing machine body 1.

5, a kind of as claim 1 or the 4 described noise of washing machine and the devices of vibration of preventing, it is characterized in that described two magnetic elements all are permanent magnets.

6, a kind of any one the described noise of washing machine and device of vibration of preventing as claim 1 or 4 is characterized in that described two magnetic elements are electromagnet.

7, a kind of noise of washing machine and device of vibration of preventing as claimed in claim 1 is characterized in that described magnetic levitation device comprises the magnet yoke element 14 and 15 that prevents described two magnetic elements demagnetization.

8, a kind of noise of washing machine and device of vibration of preventing as claimed in claim 1 is characterized in that described levitation device comprises the spring element 4' of the described bucket of a buffering component vibration.

9, a kind of noise of washing machine and device of vibration of preventing as claimed in claim 8 is characterized in that described spring element 4' is arranged to prevent the vibration vertically of described bucket parts.