CN1727551A

CN1727551A - Water saving type washer

Info

Publication number: CN1727551A
Application number: CNA2004100509412A
Authority: CN
Inventors: 伍卓铨
Original assignee: Jinling Electrical Co Ltd
Current assignee: Jinling Electrical Co Ltd
Priority date: 2004-07-30
Filing date: 2004-07-30
Publication date: 2006-02-01
Anticipated expiration: 2024-07-30
Also published as: CN100516342C

Abstract

A water-saving washer is composed of an external drum, an internal drum with open top, a motor and its transmission unit for driving internal to rotate, and a controller electrically connected to said motor for executing the washing, draining and dewatering programs. It features that for said draining program, the rotation speed of motor is controlled to a setting value and the water to be drained is flowing from the internal drum through its open top into external drum.

Description

A kind of water-saving type laundry machine

Technical field

The present invention relates to a kind of water-saving type laundry machine, the water discharge method of water-saving type laundry machine and use the water saving type full automatic washing machine of this method especially, classification belongs to D06F39/08 in the International Patent Classification (IPC).

Background technology

For prior art impeller-type or stirring type fully-automatic washing machine, outer bucket (claiming steel ladle again) not water storage when water-saving type laundry machine is meant laundry, the washing machine that only interior barrel (claiming rotary barrel, dehydration barrel again) water storage is washed; It is than conventional washer water saving (20～30) %.

The Chinese invention patent 95117171.2 " automatic washing machine " of this washing machine visible Toshiba Corp of technical scheme early and the applicant's Chinese utility model patent ZL97231435.0 " water saving type full automatic washing machine ".Its design feature is seen Fig. 1, similar with conventional washer, centre bore 1a by motor bucket 1 outside the last columella fixed part cover sealing ring 17 of the speed-reducing clutch 18 of belt pulley transmission is fixed in, interior bucket 2 in the outer bucket 1 is fixed on dehydrating shaft (the claiming outer shaft again) 18a together by pallet 5 and rotation back-up ring 6, be the wash shaft that connects impeller (claim not only stirring wheel) 3 coaxial rotations (but also in claiming axle) 18b in the 18a, interior bucket 2 has downward drainage channel.Its change with respect to conventional washer is: an interior bucket middle and lower part sidewall atresia and circle dehydration apopore is arranged at top; Interior bucket 2 downward drainage channels are provided with the hermetically-sealed construction with outer bucket 1 isolation, make the not water storage of outer bucket.The sealing structure mainly is that the osculum 7 that penetrates pallet 5 and rotation back-up ring 6 of interior barrel of bottom center ring-type setting reaches the seal closure 11 of the platform taper of barrel 1 bottom inside setting outside and the drain chamber 16 of outer barrel of 1 bottom surface formation.This drain chamber is communicated with main drainpipe 13, draining valve 14 and drainpipe 47 through main water discharge outlet 15, and has connecting hole 92, is used to connect the pressure sensor of sensed water level.In seal clearance is distributed between bucket 2 and the pallet 5, between rotation back-up ring 6 and the pallet 5, between seal closure 11 and the outer bucket 1 and rotation back-up ring 6 and seal closure upper end central authorities holding between the upper port of rotating back-up ring 6 of being had.Wherein, interior bucket 2 can be driven by dehydrating shaft 18a with respect to outer bucket 1 and rotate, and realizes the dehydration action, and rotation back-up ring 6 also can rotate with interior bucket 2.Therefore, there is relative motion in rotation back-up ring 6 with respect to seal closure 11, and sealing therebetween belongs to a class rotary seal structure.Gap between rotation back-up ring outer cylinder 6a and the seal closure circle suitable for reading 11b is by sealing ring 10 sealings, sealing circle 10 constitutes by the tubular outer rim that is positioned at medial and lateral and with the annular upper limb that two outer rims join together, the upper/lower terminal of inner edge have respectively slope inwardly extend with rotation back-up ring outer cylinder 6a interference fit on lips and teeth and following lips and teeth.During laundry, inwardly bucket 2 water fillings, interior bucket relies on described sealing to make water not flow to outer bucket 1; Because draining valve 14 cuts out, water can only be stored in interior bucket 2 and the drain chamber 16 simultaneously.Before the dehydration, draining valve 14 is at first opened, and the water that interior bucket is 2 li is discharged through described drainage channel; Then, interior bucket is rotation at a high speed, and the water of clothing rises at centrifugal action lower edge inner barrel wall, throws away from the dehydration apopore on top, is collected by outer bucket 1, receives drainpipe 47 through secondary water discharge outlet 4, secondary drainpipe 19 then and discharges.The deficiency of the prior art is that the lips and teeth of sealing ring 10 hold rotation back-up ring outer cylinder 6a all the time tightly, friction when interior bucket rotates at a high speed, there is tangible life-span, noise and excessive power drain (even influence starts) problem, need suitable structural design, technology and material to improve, thereby cause the increase of cost.In addition, the hermetically-sealed construction in being present between bucket outer bottom and the outer bucket inner bottom part has increased volume (highly) with respect to conventional washer, and Change In Design is bigger; The chance that the water in formed water chamber is obviously wasted and increase is leaked.Owing to above reason, though this kind water saving type full automatic washing machine has been seen listing, slower development.

China utility model patent ZL02227545.2 " a kind of float type sealing device for water saving type full automatic washing machine " proposes to replace above-mentioned hermetically-sealed construction with float type sealing device.The deficiency of this technical scheme is: the sealing load of buoyancy is difficult to bigger, reveals easily when especially waterflood injection rate is slow; The swabbing action of bottom gusset can be destroyed the sealing function of buoyancy when impeller rotated.To the latter, this patent applicant state's utility model patent ZL02249536.3 " a kind of interior bucket draining non-return structure of water-saving full-automatic impeller type washing machine " therein is set forth in the corrective measure that osculum is provided with non-return structure, structure thereby complicated.This scheme is not seen yet and is actually used in product.

China utility model patent ZL03215552.2 water-conservation washing machine drainage arrangement " when proposing,, thereby implement powered also as the interior bucket isolation structure of drainage channel and outer bucket downwards with traditional draining valve control draining.This technical scheme can be improved the shortcoming of aforementioned two technical scheme hermetically-sealed constructions, but the same with them, and interior bucket outer bottom and hermetically-sealed construction between the outer barrel inner bottom part still exist and occupy volume, water consumption and the increase problems such as chance of leaking, and also do not see to be actually used in product.

Summary of the invention

Technical problem to be solved by this invention is: design a kind of water-saving type laundry machine, it is more simple in structure and reduce volume than prior art products, and more reliable and conserve water more.

The technical scheme of technical solution problem of the present invention is: a kind of water-saving type laundry machine, this washing machine comprises: outer bucket, be positioned at the bucket that outer bucket and opening make progress, drive the motor and the transmission device thereof of bucket rotation in this, connect the controller that described motor is carried out washing, draining and dehydration procedure; It is characterized in that: described drainage procedure is connected described motor rotation.

Theoretical and experiment shows that the interior bucket of rotation drives the circulation that cleaning solution forms, because centrifugal action rising liquid level, so that can discharge from the top.Obviously, the water discharge method of the technical program has the pumping action that promotes liquid when having utilized interior bucket to rotate dexterously, with and because opening upwards also has from the top enters outside barrel passage of discharge, unexpectedly can avoid traditional passage, thereby eliminate as stated in the Background Art because from all disadvantages of the design of interior bucket below draining from interior bucket below draining.Its further beneficial effect is: because drainage procedure is held concurrently by this Motor Control, can save the drain valve structure of prior art; Dehydration procedure can be right after after drainage procedure, make washings in the interior bucket of rotation from many water to few water until taking off the dried continuous process that is combined into, can form and keep gyrating mass distribution quite uniformly, improve the dehydration and vibration and the noise problem of conventional washer greatly.

The described drainage procedure of this technical scheme preferred design comprises the control of the speed setting of described motor, and this setting at first is than the slow-speed of revolution, is higher rotation speed afterwards at the appointed time.This design mainly is the liquid level of control rotation circulation, makes bucket and the unnecessary energy consumption of minimizing outside its unlikely too high overflowing, and can alleviate the performance requirement to motor.For better effect is arranged, it further designs and is: described setting at first is than the slow-speed of revolution, increases gradually in time then to be higher rotation speed; Described setting rotating speed increases according to one or more snippets continuous basic elementary functions in time.Usually should design the rated speed that described higher rotation speed is described motor, than the slow-speed of revolution be zero or the rated speed of described motor 1/15～1/10, make the capacity of motor obtain utilizing more fully.

According to the water-saving type laundry machine of the technical program water discharge method, its inner barrel wall top has the dehydration apopore that leads to outer bucket, under part be totally-enclosed; To automatic washing machine, electromagnetism water injection valve and water injection rate detecting unit need be set, described controller has the control loop of connecting the electromagnetism water injection valve and cut off this valve after the output of water injection rate detecting unit reaching setting.Because cancellation is from the passage of interior bucket below outside bucket draining, the water of water injection rate detecting unit and interior bucket need be done the separate type design; The first, the water injection rate detecting unit comprises: the throttling arrangement that is provided with in described electromagnetism water injection valve water route, the output of this throttling arrangement connects a differential pressure pick-up; Described controller comprises that one sets the integrating unit of limit value, and it detects the output of differential pressure pick-up, and the timing integrating cuts off described electromagnetism water injection valve control loop when setting limit value.Another design is, this washing machine also comprises outer case, and described outer bucket is suspended to outer case; The water injection rate detecting unit is included in the load sensor that hitch point is provided with; Described controller comprises that one sets the electric weight detecting unit of limit value, and it detects the output of load sensor, cuts off described electromagnetism water injection valve control loop when setting limit value.

Water-saving type laundry machine according to the technical program water discharge method, also design a described interior bucket sidewall and be provided with the filter of meeting mutually with described direction of rotation, and the foot moulding of interior bucket sidewall and the honeycomb duct that described filter import arc connects, so as Waterflow-guiding at the bottom of falling to barrel silt and foreign material to filter.Get rid of these silts and foreign material and be the upwards specific question of draining.

According to the water-saving type laundry machine of the technical program water discharge method, design described in bucket top on the dehydration apopore, cover the recessed downward annular plate washer of an arc so that the liquid level of rotation circulation is returned downwards by this plate washer guiding when too high, with anti-spilled outer bucket.

Description of drawings

Following accompanying drawing is used for that the present invention is further illustrated in conjunction with the embodiments.

Fig. 1 is a kind of water-saving full automatic impeller formula washing machine inner tub discharge structure schematic diagram of prior art.

Fig. 2 is a kind of traditional full automatic impeller formula washing machine structure schematic diagram.

Fig. 3 is the present invention's the 1st embodiment full automatic impeller formula washing machine structure schematic diagram.

Fig. 4 is the present invention's the 1st embodiment washing machine electrical diagram.

Fig. 5 is the present invention the 1st embodiment program for washing IGCT on off operating mode figure.

Fig. 6 is the present invention's the 1st embodiment washing machine filter schematic side view.

Fig. 7 is the present invention's the 1st embodiment washing machine filter front elevational schematic.

Fig. 8 is a forward liquid stream schematic top plan view of the present invention's the 1st embodiment washing machine filter.

Fig. 9 is the reverse liquid stream of the present invention's the 1st an embodiment washing machine filter schematic top plan view.

Figure 10 is the present invention's the 2nd embodiment full automatic impeller formula washing machine structure schematic diagram.

The specific embodiment

The present invention's the 1st embodiment full automatic impeller formula washing machine mechanical structure as shown in Figure 3, basic circuit structure is as shown in Figure 4.This washing machine is to serve as that the basis is improved and to be formed with a kind of traditional full automatic impeller formula washing machine structure.

This conventional washer mechanical structure is referring to Fig. 2: outer bucket 001 is suspended on the bearing 048 of outer case 047 by suspension rod 046; Behind the bucket 001, the uniform hole in sidewall and bottom at first is installed on dehydrating shaft with outer barrel 001 interior barrel 005 of communicating to the output shaft extension of the clutch 015 of bucket 001 outer bottom outside sealing ring passes through outside being fixed in, and impeller 016 is installed on wash shaft then; Clutch 015 is driven through small belt pulley 007, belt 018, big belt pulley 011 by the motor 41 of outer barrel of 001 outer bottom, and therefore interior bucket 005 can rotate in outer bucket 001 and impeller 016 coaxial line rotation in interior bucket 005; In the time of the drag-line 002 traction draining valve 004 of tractizer 42, dehydration/washing switching operating mechanism of the clutch 015 that interlock is made up of fork 009 and slide block 019; Be arranged at electronic program controller 20 control motor 41, the tractizers 42 in forward position, washing machine top and be positioned at the electric components such as entering water electromagnetic valve 41 at rear portion on the washing machine; Pressure sensor 51 is fixed in rear portion on the washing machine, and its gas inlet tube connects the connecting hole 092 that is positioned at outer bucket 001 bottom, output and the corresponding frequency signal of inner bucket water amount (or liquid level).

The basic circuit structure of this conventional washer is also as shown in Figure 4: electronic program controller 20 is made up of the single-chip microcomputer 22 of the

bidirectional thyristor

32 and 31 of the bidirectional thyristor 33 of the bidirectional thyristor 34 of control entering water electromagnetic valve 41, control tractizer 42, control single-phase capacitor operation motor 41, the above-mentioned IGCT of control and drive circuit 23 thereof and supply unit 21; Single-chip microcomputer 22 is accepted button, pressure sensor 51 and other guard signal of control panel; drive the program break-make of described bidirectional thyristor through drive circuit 23 by its internal memory; and then make electromagnetic valve 41, tractizer 42 and motor 41 program for washing routinely drive the running of laundry mechanical system, comprising:

---at first bidirectional thyristor 34 conductings, entering water electromagnetic valve 41 action water fillings, pressure sensor 51 output signal frequency raise with the increase of inner bucket water amount, to being higher than single-chip microcomputer 22 internally stored programs when setting the limit value of the water yield, bidirectional thyristor 34 ends, and entering water electromagnetic valve 41 stops water filling,

bidirectional thyristor

31 and 32 beginning alternate conduction, drive single-phase capacitor operation motor 41, the clutch 015 transmission impeller 016 reversible rotation under reset mode; This section process is a washing procedure;

---after washing procedure finished to the stipulated time,

bidirectional thyristor

31 and 32 all ends, bidirectional thyristor 33 conductings, tractizer 42 traction draining valves 004 opening water discharge, cleaning solution in the interior bucket 005 bucket 001 outside the bottom flows to flows to drainpipe 014 through draining valve 004 and discharges (see figure 2); This section process is a drainage procedure; In this program, clutch 015 is switched to dewatering state by tractizer 42 traction simultaneously, and interior bucket 005 is by coupling but do not turn round;

---after drainage procedure finished to the stipulated time, still conducting of bidirectional thyristor 33, tractizer 42 continues traction clutch 015 and is in dewatering state, bidirectional thyristor 31 conductings, drive single-phase capacitor operation motor 41, through clutch 015 transmission impeller 016 and the 005 unidirectional rotation of interior bucket simultaneously, bucket 005 areole got rid of bucket 001 outward in the water of clothing passed through, and flowed to drainpipe 014 through draining valve 004 and discharged (see figure 2); This section process is a dehydration procedure.

Described above is the typical case of traditional full automatic impeller formula washing machine, also is applicable to similar agitator type washing machine certainly.

The present invention's the 1st embodiment full automatic impeller formula washing machine comprising with respect to the Change In Design of the full automatic impeller formula washing machine traditional as Fig. 2 (the undeclared in the text person of label among Fig. 3, its meaning and effect are identical with Fig. 2's):

A) be analogous to the described water saving type full automatic washing machine of background technology, new interior bucket 105 encloses the dehydration apopore 104 (can suitably increase aperture and hole count) except that top keeps one with respect to bucket 005 in former, and all the other holes are all sealed;

B) the original draining valve 004 of cancellation, the place pipeline directly connects.

C) throttle pipe 192 is inserted in the outlet of entering water electromagnetic valve 41; Throttle pipe 192 can be with reference to the flow measurement differential pressure producer standard design, usually be processed as Venturi tube or orifice plate, pressure detecting mouth 193 is drawn in its upstream, obtains (flow/frequency) coefficient according to (frequency/pressure) constant and the throttling flow measurement experiment of pressure sensor 51; The input of pressure sensor 51 is not connected with the connecting hole 092 (sealing this hole) of outer bucket 001 outer bottom, changes into the pressure detecting mouth 193 of throttle pipe 192 being connected.

D) program of modification single-chip microcomputer 22 internal memories comprises:

---in the frequency of former pressure sensor 51 outputs and before corresponding to the limit value comparison statement of setting the water yield, increase by one section integrating program, make conducting (the entering water electromagnetic valve 41 action water fillings) time integral of the product of the output frequency of pressure sensor 51 and described (flow/frequency) coefficient to bidirectional thyristor 34, the frequency of former pressure sensor 51 outputs with corresponding to the limit value of setting the water yield relatively, change into described integration with corresponding to the limit value of setting the water yield relatively;

---at drainage procedure, bidirectional thyristor 33 changes that (the secret note place represents conducting among the figure according on off operating mode figure shown in Figure 5 operation into, all the other are for ending), for nominal load, at first continue conducting 5s, motor 41 speed are from the zero 30r/m that progressively rises, then successively with make and break period 3s and make-to-break ratio 0.33 operation 21s (being equivalent to motor setting mean speed is 45r/m), with make and break period 2s and make-to-break ratio 0.5 operation 20s (being equivalent to motor setting mean speed is 70r/m), with make and break period 3s and make-to-break ratio 0.67 operation 21s (being equivalent to motor setting mean speed is 90r/m), with make and break period 5s and make-to-break ratio 0.8 operation 20s (being equivalent to motor setting mean speed is 120r/m), last 10s continues conducting, the rotating speed of motor 41 progressively rises to its rated speed 1380r/m, and keeps this state and enter dehydration procedure.

Experiment as seen, interior bucket 105 increases gradually in time and is higher rotation speed, the cleaning solution in the bucket passes through top one circle dehydration apopore quite reposefully and is discharged into outer barrel from the top, flow to drainpipe 014 discharge then.The program of single-chip microcomputer 22 internal memories is to set rotating speed to increase according to the multistage linear function in time.Certainly, according to the situation of load or by experiment, also can be designed as according to one or more snippets continuous linear function or separate index number or logarithmic function and increase, and these functions can there be different constants.In addition, the cycle that make and break period can supply frequency is a unit, is one-period with 20～50 cycles for example, and running more stably can be arranged; Make-to-break ratio also can increase continuously; The speed governing of motor is not limited to adopt make-to-break ratio control, also can introduce the IGCT phase-shift voltage regulating of prior art and realize, but note inhibition electromagnetic interference and noise.Using frequency conversion speed-adjusting system instead can have better control effect, but cost wants high.

The improvement of the present invention's the 1st embodiment full automatic impeller formula washing machine mechanical structure also comprises has increased filter 180.Its finer structure and operation principle be (the undeclared in the text person of number in the figure, its meaning and effect are identical with Fig. 3's) shown in Fig. 6～9.The main body of this filter is to be common in plain edition (the outer bucket of the nothing) washing machine to flow the filter bag of swinging 181 against the current with yielding and comply of the attached wall installation of a vertical rotation axis, but by the setting of the bucket end, and respectively form the honeycomb duct 182 of downwards shown in Figure 7 and the arc that inwardly seamlessly transits in following current import 184 (see figure 8)s and adverse current import 185 (see figure 9) places so that Waterflow-guiding at the bottom of falling to barrel heavier silt and foreign material 183 to filter 180; According to Hydrodynamics Theory and by experiment, can obtain the optimal design of this honeycomb duct shape;

In addition, invent the recessed downward shape of arc that the 1st embodiment full automatic impeller formula washing machine mechanical structure has also kept the gimbal 049 (see figure 2) bottom of bucket 005 top in the traditional product.This shape is former only to be considered to alleviate when being used to wash to dabble, but in draining experiment of the present invention, has also shown and can inwardly return interior bucket to the too high rotation circulation guiding of liquid level downwards, with anti-spilled outer bucket.Can revise its shape by experiment, obtain better effect.

Shown in the present invention's the 2nd embodiment full automatic impeller formula washing machine structure such as Figure 10 (the undeclared in the text person of number in the figure, its meaning and effect are identical with Fig. 3's), the difference of itself and the 1st embodiment only is:

---the outlet of entering water electromagnetic valve 41 is constant with respect to traditional product, does not promptly establish throttle pipe 192;

---cancellation pressure sensor 51;

---wherein on the bearing 048 of a suspension rod 246, snap in the load sensor 251 and the voltage follower circuit thereof of a prior art in outer case 047 suspention, its output is the interface of connection single-chip microcomputer 22 directly, and the input quantity of this interface changes voltage into by frequency; Determine corresponding to (voltage/water yield) coefficient of (frequency/water yield) coefficient of traditional product with corresponding to the limit value of setting the water yield according to (voltage/weight) constant of load sensor 251 and actual flood-pot experiment;

---in the program of single-chip microcomputer 22 internal memories with respect to traditional product, only the frequency of former pressure sensor 51 outputs with corresponding to the limit value of setting the water yield relatively, change into the voltage of load sensor 251 outputs with corresponding to the limit value of setting the water yield relatively; All the other are constant.

Can see that the present invention can improve easily and form on the basis of traditional product, especially need not to change inside and outside bucket and casing etc., significantly reduce development cost than macrostructure.

Claims

1, a kind of water-saving type laundry machine, this washing machine comprises: outer bucket, be positioned at the bucket that outer bucket and opening make progress, drive the motor and the transmission device thereof of bucket rotation in this, connect the controller that described motor is carried out washing, draining and dehydration procedure; It is characterized in that: described drainage procedure is connected described motor rotation.

2, according to the described water-saving type laundry machine of claim 1, it is characterized in that: described drainage procedure comprises the control of the speed setting of described motor, and this setting at first is than the slow-speed of revolution, is higher rotation speed afterwards at the appointed time.

3, according to the described water-saving type laundry machine of claim 2, it is characterized in that: described setting at first is than the slow-speed of revolution, increases gradually in time then to be higher rotation speed.

4, according to the described water-saving type laundry machine of claim 3, it is characterized in that: described setting rotating speed increases according to one or more snippets continuous basic elementary functions in time.

5, according to claim 2 or claim 3 or the described water-saving type laundry machine of claim 4, it is characterized in that: described higher rotation speed is the rated speed of described motor, than the slow-speed of revolution be zero or the rated speed of described motor 1/15～1/10.

6, according to claim 1 or claim 2 or claim 3 or the described water-saving type laundry machine of claim 4, it is characterized in that: described inner barrel wall top has the dehydration apopore that leads to outer bucket, under part be totally-enclosed.

7, according to claim 1 or claim 2 or claim 3 or the described water-saving type laundry machine of claim 4, it is characterized in that: also have electromagnetism water injection valve and water injection rate detecting unit, described controller has the electromagnetism of connection water injection valve, and cuts off the control loop of this valve after the output of water injection rate detecting unit reaches setting.

According to the described water-saving type laundry machine of claim 7, it is characterized in that 8, the water injection rate detecting unit comprises: the throttling arrangement that is provided with in described electromagnetism water injection valve water route, the output of this throttling arrangement connects a differential pressure pick-up; Described controller comprises that one sets the integrating unit of limit value, and it detects the output of differential pressure pick-up, and the integrating that clocks cuts off described electromagnetism water injection valve control loop when setting limit value.

9, according to the described water-saving type laundry machine of claim 7, it is characterized in that: also comprise outer case, described outer bucket is suspended to outer case; The water injection rate detecting unit is included in the load sensor that hitch point is provided with; Described controller comprises that one sets the electric weight detecting unit of limit value, and it detects the output of load sensor, cuts off described electromagnetism water injection valve control loop when setting limit value.

10, according to claim 1 or claim 2 or claim 3 or the described water-saving type laundry machine of claim 4, it is characterized in that: the bucket sidewall is provided with the filter of meeting mutually with described direction of rotation in described, and the foot moulding of interior bucket sidewall and the honeycomb duct that described filter import arc connects.

11, according to the described water-saving type laundry machine of claim 6, it is characterized in that: bucket dehydration apopore top covers recessed downward curved tailgate in described.