CN1497092A - Washing system of washer - Google Patents

Abstract

A washing system for laundry machines characterized in that it comprises a structure (E) that fixes a cylindrical and vertical tank (10), having a perforated basket (20) therein that is vertically and rotationally engaged with the structure (E) and that houses an impeller (50), engaged with said structure (E), in order to be driven alternatively and rotationally by an engine (60) in a first turning direction, during a first turning time, and in a second turning direction, during a second turning time that is substantially lower than the first turning time during a washing machine operation; thereby the basket (20) being constantly and rotationally locked with regard to the structure (E) in said first turning direction and, maintaining the same rotationally free in the second turning direction, thereby said basket (20) being selectively and rotationally locked to the impeller (50) when said impeller is driven by the engine (60) in the second turning direction, during a machine centrifu ge operation.

Description

The washing system that is used for washing machine

Scope of the present invention

The present invention relates to be used for the washing system of washing machine, this washing machine belongs to such one type, it comprises a structural member, fix a vertical column barrel thereon, the size of bucket is made the load that comprises wash liquid, portion coaxially installs one and does foraminate rotatingcylindrical drum within it, cylinder design becomes to admit the clothes that will wash, cylinder vertically and is rotatably supported by the structural member of machine, and keep the impeller on the upper end that is contained in a vertical central shaft, in the structural member of machine and be bonded on the motor, be responsible for rotation selectively and drive impeller and cylinder in the different step of laundry operation by this motor with sliding supported condition for central shaft.

Background of the present invention

In the washing machine of the above-mentioned type, the laundry operation that is included in the clothes in the cylinder carries out along the rotation of two opposite directions by certain revolution under given speed by the common of impeller, will consider this moment: the motion of giving clothes and wash liquid simultaneously; The motion that is subjected to owing to above-mentioned clothes acts on the wearing and tearing on the clothes.

This machine also allows during in its combination and along same direction rotation, to carry out centrifugal rotary operation at cylinder and impeller, so that to extract water out usually above the rotation that acts on the impeller when the laundry operation from clothes.

In the washing machine of these original technology, the velocity variations that is used for centrifugal rotary operation and laundry operation is undertaken by a transmission system, and this system revises drive connection by electromagnetism instruction to impeller and the desired rotating condition of cylinder.Though they allow to select more suitably speed to washing and centrifugal rotation,, known speed change rotation system has more complicated and expensive structure, has improved the ultimate cost of machine.

From motor and the answer that is conducted to the velocity variations that the structure of the power of motor obtains also cause higher washing machine cost.

Due to the fact that, the velocity variations that promptly is used to carry out laundry operation and centrifugal rotary operation causes a kind of structure, it is youngster's complexity more or less, but it has improved the ultimate cost of machine, therefore, and in order to reduce the cost of above-mentioned machine, the most basic is to seek a kind of answer, wherein, central shaft and cylinder for impeller only adopt a kind of operating rate.

On the other hand, in these known machines, cylinder requires to be lockable usually, so that when laundry operation, do not rotate with respect to bucket and machine construction, in this laundry operation, make impeller along a direction or opposite direction rotation, with mobile wash liquid and the clothes that is immersed in wherein.For this reason, various known electromagnetic locking devices are arranged, it automatically is driven when washing, to keep tumbler lock on machine construction, then unclamps when centrifugal rotation, so that rotation.Remove outside this cylinder locking device, these machines also need a coupling apparatus, it also be electromagnetism and also central shaft that cylinder is bonded to impeller on, allow above-mentioned cylinder when the centrifugal rotation of clothes, to rotate with impeller.

Adopt two electromagnetic locking devices, one is used for cylinder is bonded to structural member, and another is used for cylinder is bonded to impeller, also is a factor that improves the ultimate cost of machine.Even using under the situation of spring type one-way locking device between cylinder and the structural member, one-way engagement is bearing in opposite direction pinning cylinder also to need for example to install by other, and this supporting also is an element that raises the cost.

Because cylinder is not rotatably to be locked on the machine construction along the direction of rotation of impeller, so pass through cylinder to be rotated with impeller by wash liquid and the formed draw of clothes.In the case, wash liquid produces a vortex, and strengthens its volume by quickening rotation, until the upper limb that might flow through bucket.

In known washing machine, need one of problem of solving for satisfying about reducing cost and for reaching laundry operation efficiently, and don't make clothes be subjected to the requirement of the undue necessary condition of work of wearing and tearing.

Purpose of the present invention

General objects of the present invention is for providing a washing system that is used for the washing machine of the sort of type this place considered, and it has lower cost, and with regard to detersive efficiency and clothing wear, it can move under appropriate condition.

More specifically purpose of the present invention is for providing a washing system that is used for washing machine above-mentioned, its adopts a transmission system of having only a speed that is used for impeller and cylinder simultaneously and one only along the cylinder rotational lock system of a direction of rotation with respect to machine construction.

Overview of the present invention

Above-mentioned purpose reaches by a washing system that is used for washing machine, this washing machine belongs to such one type, it comprises the structural member of fixing a vertical column barrel, in bucket, generally coaxially keep and do foraminate cylinder, this cylinder vertically and is rotatably supported by structural member, and keep the impeller of a usefulness sliding supported condition in structural member, so that rotatably driven along two opposite directions by a motor selectively, thereby realize laundry operation and centrifugal rotary operation.

According to the present invention, impeller is alternately and rotatably by Motor Drive, at first rotational time along first direction of rotation, at second rotational time along second direction of rotation, this second rotational time is shorter than first rotational time widely when the laundry operation of machine, along above-mentioned first direction of rotation, cylinder is locked with respect to structural member consistently and rotatably, and along second direction of rotation, then keep rotating freely, in the centrifugal rotary operation of machine, when impeller along second direction of rotation during by Motor Drive, above-mentioned cylinder is locked with respect to impeller selectively and rotatably, and impeller all is driven with same rotation in laundry operation and centrifugal rotary operation.

The simple declaration of accompanying drawing

Describe the present invention below with reference to the accompanying drawings, this figure provides as the possible example of structure of washing machine, wherein:

Fig. 1 for this reason the sort of type considered of place according to the signal of the washing machine of the present invention's structure vertical sectional view radially; And

Fig. 2 is the radial cross-section of amplification of the simplification in impeller and idler district, wherein, an automatic one-way locking device is installed, is pinned cylinder with structural member with respect to washing machine, and a calutron also is installed therein, to pin the rotation of impeller when the centrifugal rotary operation with respect to cylinder.

The explanation of illustrated embodiment

As what in Fig. 1, mention and illustrate, the present invention is used in the washing system that is used for washing machine, this washing machine belongs to such one type, it comprises that one defines the structural member E of a prismatic chamber substantially, wherein, fix a vertical column barrel 10 by any suitable device, with a diapire 11 sealings and unlimited in the above, the size of bucket is made the load that can comprise wash liquid to this bucket below.

In bucket 10, coaxially install one and do foraminate rotatingcylindrical drum 20, this cylinder has been done diapire 21 and has been opened wide in the above, and be designed to comprise the clothes that will wash, above-mentioned diapire 21 is fixed on the upper end of tubular axle 30 with its middle part, this axle is also protruding vertically downward from bucket 10, and by a pair of bearing 31,32 supporting that is installed on the bearing block 12, this bearing block is fixed on the diapire 21 of bucket 10 or as one whole and cooperates with above-mentioned wall 11.This assembly allows above-mentioned cylinder 20 to rotate freely around its longitudinal axis, and roller seat is placed on the tubular axle 30.

Passing the passage of the tubular axle 30 of bucket 10 diapire 11 makes by the retainer 13 that is mounted on the above-mentioned diapire 11.

In tubular axle 30, with sliding bearing (usually by sleeve 41,42) supporting one central shaft 40, fix on the upper end of aforementioned tube oblique crank Z 30 one its be shaped as the impeller 50 of the dish on the diapire 21 that is positioned at cylinder 20, it and above-mentioned diapire keep a little axial spacing.

The lower end of central shaft 40 is protruding from tubular axle 30, to admit a driven pulley 40, belt wheel 40 is with 44 to combine with driving pulley 45 with one in operation, belt wheel 45 is fixed on the axle of motor 60, motor mounting and usually is fixed on the diapire of bucket 10 on the structural member E of machine directly or indirectly.Driving pulley 45 can adopt groove on above-mentioned axle by being press-fitted incompatible finishing at fixing on the axle of motor 60, so as to guarantee this fix and two parts between transmission of torque, and do not need to adopt additional retaining element such as nut.

Compare with mechanization with speed change, and with velocity variations be therein as the function of desired operation automatically the transmission device of control compare, this structure causes mechanization, and causes very simple and the transmission device of lower cost is arranged.

According to the one aspect of the present invention that in Fig. 2, illustrates as an example, the washing system that is used for washing machine comprises a locking device 70, it is used for independent direction of rotation along aforementioned tube oblique crank Z 30 with respect to structural member E, more more specifically, pins tubular axles 30 with respect to bearing block 12.

In a preferred construction form of the present invention, locking device 70 comprises a helical spring 71, it be installed in tubular axle 30 around, so that locking device 70 be in idle condition following time slidably seat be placed on the axle, above-mentioned helical spring 71 has a radially outwardly directed end 72, cooperates consistently and to be locked in the seat 15 that is located in the bearing block 12 keeping.

This structure allows cylinder extremely simply and at an easy rate to pin along first direction of rotation, but can not provide locking in opposite direction again.

Like this, when machine was worked by the washing situation, impeller 50 rotated sometime along first direction, and it tries hard to make cylinder 20 to rotate by same direction.But locking device 70 stops cylinders to rotate along above-mentioned first direction, thereby the common displacement of load, cylinder 20 and impeller 50 by wash liquid, clothes avoids forming vortex.

However, when the rotation of impeller 50 is interrupted, and when turning around to the second direction opposite with first direction, cylinder 20 is washed liquid and promotes, and also by identical speed and along above-mentioned second direction rotation, in this direction, does not produce locking on cylinder 20.

For the plane that prevents wash liquid too along with the rotary acceleration of cylinder 20 rises, the invention provides a special operation process, it is asymmetric along the rotational time that above-mentioned both direction produces impeller 50.

Because cylinder 20 is rotated freely along above-mentioned second direction of rotation, this direction is then tried hard to by the level of the formation raising wash liquid of the vortex in the cylinder 20, so impeller 50 carries out with second rotational time that is less than first rotational time greatly along the driving of this second direction of rotation.

Adopt said structure and operation process, just might obtain a washing system that is used for washing machine, it drives impeller and pins cylinder in laundry operation, very simple structure with low cost is arranged, and with suitable operation characteristic realization laundry operation and centrifugal rotary operation, and clothes is not produced undue wear.

For cylinder 20 is rotated with impeller 50 along second direction of rotation, machine has the coupling apparatus 80 that is roughly an electromagnetic clutch, and it interrelates with tubular axle 30 and central shaft 40 in operation.

In exemplary configurations shown in Figure 2, coupling apparatus 80 comprises one second helical spring 81, it be contained in tubular axle 30 extend axially part around and first an end 81a who is fixed on the central shaft 40 arranged, so that second spring 81 is with central shaft 40 rotation, and on tubular axle 30, rotatably slide.

The second end 81b of second spring 81 radially is engaged in usually in the cylindrical sleeve of making of plastics 90, this sleeve coaxially and be adjacent to be installed in second spring 81 around, and rotate jointly with second spring and central shaft 40.

Sleeve 90 externally and has circumferentially been done groove 91, keeps the band that is generally metal in the groove, and it surrounds sleeve 90 with certain tensile force, this tensile force be adjusted to only allow with certain power go to overcome two between the contact portion friction and rotate with respect to sleeve.Be with 92 to comprise a radial projection 93, so that lock 95 combinations, this lock Electromagnetic Drive with one.

In the centrifugal rotary operation after the discharging operation of wash liquid, the control system self actuating lock 95 of machine, with it radially towards being with 92 to push away, so that interfere with radial projection 93, block the rotation and the brake sleeve 90 of projection, be enough to make second spring 81 around tubular axle 30, to act on tightly a pressure, thereby during along the second direction rotation of above-mentioned centrifugal rotary operation, allow tubular axle 30 to do to rotate and combine with central shaft 40 at central shaft 40.

Although adopted the special device of structure, but the structural configuration that is proposed by the present invention allows washing machine to carry out its laundry operation and centrifugal rotary operation by following measures are provided: in laundry operation, cylinder has only the automation locking along first direction of rotation; Impeller is asymmetric along the rotational time of the first and second washing directions; And in the centrifugal rotary operation that the axle of the axle of impeller and cylinder jointly rotates along second direction of rotation, combination selectively between two axles.

As shown in Figure 1, cylinder 20 can be provided with a recycling pipe 25, it have one radially extension and extend axially part, this radially is arranged to pass diapire 21 and a lower end 25a who passes to the middle dimple 21a of above-mentioned diapire is arranged in the extension, this extends axially part along the cylindrical wall setting of cylinder 20 and the upper end 25b of the inside of a bending roller 21 is arranged, so as will through recycling pipe 25 by impeller 50 upwards the water of pumping be back in the cylinder.Impeller 50 is done underwing 51 radially usually, this wing along with the rotation of impeller 50 with water through recycling pipe 25 pumping that makes progress from the bottom of cylinder 20 so that the clothes load in being included in cylinder 20 above discharge current.Recycling pipe 25 can further be provided with a filter 28, and it preferably is placed on the zone of the upper end 25b of recycling pipe 25.

Should be understood that the washing chemical products of usefulness such as the discharging of soap powder or liquid soap can carry out with sending into of water, and be aligned in the space that forms between cylinder and the bucket, prevent that above-mentioned chemical products from contacting with clothes load in the cylinder at the initial stage of discharging.

Claims (9)

1. a washing system that is used for washing machine, this washing machine belongs to such one type, it comprises the structural member (E) of fixing a vertical column barrel (10), the cylinder (20) that is shaped on aperture generally coaxially is housed in bucket, this cylinder vertically and is rotatably supported by structural member (E), and the impeller (50) of a usefulness sliding supported condition in structural member (E) be housed, so that rotatably driven along two opposite directions by a motor (60) selectively, thereby realize the laundry operation and the centrifugal rotary operation of washing machine, it is characterized by, impeller (50) alternately and is rotatably driven by motor (60), at first rotational time along first direction of rotation, at second rotational time along second direction of rotation, this second rotational time is shorter than first rotational time widely when the laundry operation of washing machine, along above-mentioned first direction of rotation, cylinder (20) is locked with respect to structural member (E) consistently and rotatably, and along second direction of rotation, then keep rotating freely, in the centrifugal rotary operation of washing machine, when impeller (20) when second direction of rotation is driven by motor (60), above-mentioned cylinder (20) is locked with respect to impeller (50) selectively and rotatably, and above-mentioned impeller (50) all is driven with same rotation in laundry operation and centrifugal rotary operation.

2. washing system as claimed in claim 1 is characterized by, and impeller (50) all is driven with same rotation in laundry operation and centrifugal rotary operation.

3. washing system as claimed in claim 1, it is characterized by, cylinder (20) has one to be fixed on a lower wall (21) on (30), this axle (30) is bearing in the structural member (E) with axle journal, impeller (50) then is installed on the upper end of central shaft (40), this axle (40) also is bonded on the motor (60) below with the axle journal supporting in tubular axle (30), it is characterized by, cylinder (20) reaches by a locking device (70) with the locking of structural member (E), this locking device interrelates with tubular axle (30) and structural member (E) in operation, cylinder (20) then reaches by a coupling apparatus (80) with the selectable locking of impeller (50), this coupling apparatus interrelates with tubular axle (30) and central shaft (40) in operation, and when centrifugal rotary operation, automatically and selectively be driven, so that tubular axle (30) is bonded on the central shaft (40).

4. washing system as claimed in claim 3, it is characterized by, locking device (70) comprises a helical spring (71), this spring be installed in tubular axle (30) around, seat is placed on the tubular axle to keep slidably, above-mentioned helical spring (71) has an end (72) that is locked in the structural member (E), to be forced to forcing above-mentioned helical spring (71) to compress and pin tubular axle (30) when above-mentioned first direction rotates at tubular axle (30).

5. washing system as claimed in claim 3, it is characterized by, coupling apparatus (80) comprising: one second helical spring (81), it be contained in tubular axle (30) extend axially part around and have one to be fixed on first end (81a) and on the central shaft (40) and to be fixed on second end (81b) on the sleeve (90) on every side that is installed in second spring (81) so that second spring rotates with central shaft (40); And one the band (92), its band frictionally be installed in sleeve (90) around and lock (93) with one and pin its rotation, this is driven when being locked in centrifugal rotation selectively, pin second spring (81) with brake sleeve and around tubular axle (30), simultaneously central shaft (40) during along above-mentioned second direction rotation with two axle combinations.

6. washing system as claimed in claim 2, it is characterized by, to motor (60), this transmission device comprises that one is fixed on driven pulley (43), on the central shaft (40) and is fixed on driving pulley (45) and on the axle of motor (60) simultaneously around the band (44) of driven pulley and driving wheel installation to central shaft (40) with a combined with transmission.

7. washing system as claimed in claim 6 is characterized by, driving wheel (45) on the axle of motor (60) fixing by above-mentioned motor (60) spool on the groove that defines carry out with interference fit (interference).

8. washing system as claimed in claim 1, it is characterized by, cylinder (20) is provided with a recycling pipe (25), and it has a lower end (25a) and upper end (25b), this lower end radially externally is provided with respect to impeller (50), so that admit the radially current by the rotation generation of above-mentioned impeller (50); This upper end is arranged on the top of cylinder (20) and the inside of bending roller, so as will through recycling pipe (25) by impeller (50) upwards the water of pumping be back in the above-mentioned cylinder (20).

9. washing system as claimed in claim 8 is characterized by, and recycling pipe (25) is provided with a filter (28) in the zone of (25b) in the top.