CN1100513C

CN1100513C - Tableware washing machine

Info

Publication number: CN1100513C
Application number: CN96119924A
Authority: CN
Inventors: 乾浩章; 由良政树; 宫内隆; 稻田刚士
Original assignee: Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Holdings Corp
Priority date: 1995-09-07
Filing date: 1996-08-22
Publication date: 2003-02-05
Anticipated expiration: 2016-08-22
Also published as: TW284680B; KR0148233B1; MY116555A; KR970014710A; CN1437911A; CN1156577A; CN1195443C

Abstract

To miniaturize a cleaning mechanism and to improve storing properties of tablewares by providing a rotational shaft of a motor in the vertical direction and a cleaning water guiding part communicating with the first and the second casings and a washing tank. Cleaning water is guided from the first suction hole 14 of a cleaning water guiding part 13 to the first impeller 9 by rotating a motor 16 in the clockwise direction in the main washing process and the rinsing process. In addition, the cleaning water is guided from the second suction hole 15 of the cleaning water guiding part 13 to the second impeller 9 by rotating the motor 16 in the counterclockwise direction by means of a rightly and reversely rotational means 17. As the rotational shafts of the cleaning motor 16 and the impellers 9 and 11 are provided in the vertical direction, the first casing 10 is especially arranged below the second casing 12. By providing the cleaning water guiding part 13 between the first casing 10 and the second casing, both cleaning and drainage are made possible only by one motor 16. The vol. of the cleaning mechanism occupied by a pump 3 and the motor 16 is reduced thereby and the max. dimension of stored tablewares can be enlarged.

Description

Table-ware washing machine

Technical field

The present invention relates to the table-ware washing machine of wash dining set.

Background technology

Below in conjunction with Figure 15 traditional table-ware washing machine is described.

As shown in the figure, table-ware washing machine main body 61 inside are provided with sink 62, by feed water valve 63 feeding cold water or hot water in this sink 62.When device drove, the washing pump 66 that driven by motor 65 made the inner loop of washings at sink 62.This circulation is carried out according to the following procedure, that is, washing pump 66 sucks washings from discharge outlet 64, and supplies with the nozzle 67 of sinks 62 inner bottom parts from this washing pump 66, sprays from here again, after with dishwashing detergent, returns discharge outlet 64 once more.

The heater 68 that heated scrub water is used is housed between the bottom of Washing spray nozzle 67 and sink 62.In addition, above Washing spray nozzle 67, be provided with and fitly arrange tableware, make washings be ejected into plate-basket 69 on the tableware effectively.On this plate-basket 69, be provided with a plurality of mobile rollers of using, can pull out to the front exterior of table-ware washing machine main body 61.

In addition, but the door 70 of freely openable is housed in the front of sink 62.For washings are spued, also have draining pump 71 outside machine.Again, the downside at sink 62 has set underframe 72, fixed support sink 62.This fixing can be that sink 62 is directly put on underframe 72, also can pass through other fixed support part.

On this traditional table-ware washing machine, the rotating shaft of the CD-ROM drive motor 65 of washing pump 66 and draining pump 71 is a horizontal direction, and the fixing of pump nearly all is to be loaded on sink 62 or the underframe 72 through elastomer 73.Fixing motor 65 on the axle of motor 65 and self cooling off the cooling fan 74 of usefulness again.

Yet there is following problem in this traditional structure.

At first, owing to have washing pump 66 and draining pump 71 these 2 pumps and motors, need sizable space to hold these wash mills.Like this, for the volume of whole table-ware washing machine, the ratio that can hold the wash volume of tableware reduces.Thereby full-size, shape and tableware number of packages for open ended tableware all can bring restriction, have reduced the accommodation function to tableware.

Again, owing to need 2 groups of pumps and drive motor thereof, so for these associated components and to assemble necessary cost higher.

Summary of the invention

In order to address the above problem, the 1st purpose of the present invention is, holds reducing cost when volume enlarges at wash mill miniaturization, tableware.For this reason, shown in Figure 1 as described later, propose to wash scheme with draining with 1 motor.

Yet as shown in Figure 1, when adopting this structure, in washing process, because draining is rotated to the direction that sucks air from drainage path 81 with the 2nd impeller 80, so in washing process, the 2nd housing 82 internal causes suck air and form gas shock (ェァガミ) state from drainage path 81, and the noise when causing washing increases.Owing to attraction, air is sucked in the 1st housing 84 again, so cause scourability obviously to descend because of pump capacity reduces sometimes from the 1st impeller 83 and the 2nd impeller 80.Thereby when reality is used, check valve 85 must be set in drainage path 81, enter in the pump to prevent air.

Yet this is just a makeshift arrangement.That is, owing to constantly there is the addle that contains dirt behind the dishwashing detergent to pass through in this check valve 85, dirt accumulates in the check valve 85, can make it lose sealing, thereby causes reliability to reduce, and can't continue to keep scourability.

Thereby the 2nd purpose of the present invention is to address this problem, and a kind of table-ware washing machine is provided, and it not only need not to be provided with check valve etc., and simple structure has stable regulation scourability, and can reduce the noise when washing.

Yet even solved this problem, this pump must suck air because of the 1st housing 10 of the side of washing and form the gas shock state, so drainage noise is very big as shown in Figure 3 textural in drainage procedure.Again, in washing process, when the leftovers screen pack was seriously stopped up, pump just was absorbed in the not enough state of extreme suction, and the 1st impeller 9 that the washings that spue are used becomes the gas shock state, and the ability that spues is reduced.At this moment, the 2nd impeller 11 that the 1st impeller 9 and draining are used and prevent that the pressure balance of 13 in the 3rd impeller that gas shock uses is destroyed, original drainage path 21 in the washings water level of maintenance certain value changed, be the rising state sometimes.When situation is the most abominable, even the problem that washings are discharged outside machine can take place in washing process.

In addition when draining, because the washings in textural pump are order drainings from top to bottom, so be not have washings in the 1st housing 10 at first, become the gas shock state, in case and draining is proceeded, then the part air in the 1st housing 10 is sucked by the 3rd impeller 13.The problem that drainability reduces, surplus water increases that early stage the 2nd impeller 11 becomes the gas shock state, causes the 2nd impeller 11 so just takes place.

In case and surplus water increases, owing to wherein be rich in fat such as butter, so in case when table-ware washing machine laid up, fat flushing solidified in pump, sometimes therefore and generating pump obstruction and can't restarting.

The installation portion of other the 2nd impeller 11 on motor be not owing to the characteristic of eddy current impeller has the current process of washings, so pile up foreign matter such as leftovers easily, impeller can take place blocked the stink that caused pump blocks and the leftovers accumulation causes by foreign matter.

Again, then lower if adopt conventional construction shown in Figure 15 in the time of on pump being fixed in sink 62 or underframe 72 with respect to the flexibility of motor direction of rotation even the centre is separated with elastomer 73, be disadvantageous from the angle that prevents to vibrate transmission.

The 3rd purpose of the present invention is to provide a kind of table-ware washing machine that reduces component count, reduces cost, improves the rinsing function.

The 4th purpose of the present invention is to provide a kind of table-ware washing machine that can further reduce surplus water, can improve washing function and rinsing function and conserve water.

The 5th purpose of the present invention is to provide a kind of high reliability table-ware washing machine that reduces drainage noise, no pump choking phenomenon.

The 6th purpose of the present invention is to provide a kind of stable table-ware washing machine of the maintenance of the water level in the drainage path when washing that makes.

The 7th purpose of the present invention be to provide a kind of when can further improve washing and draining pump stability and reliability, also can reduce the table-ware washing machine of drainage noise.

The 8th purpose of the present invention is to provide a kind of table-ware washing machine that does not wash the caused NZ sound of impeller (noise with frequency of rotating speed (N) * number of blade (Z)), can reduce drainage noise significantly.

The 9th purpose of the present invention is to provide a kind of pump stability and reliability, raising washing and drain function and can reduce the table-ware washing machine of drainage noise when can further improve the washing draining.

To achieve these goals, the pressure that spues of the washings of table-ware washing machine of the present invention by making each housing in the self-pumping keeps balance, reduce the surplus water water level to improve rinsing function and conserve water, and make washings spue the pressure rising to improve washing function, the noise the when exhaust when making gas shock improves with reduction washing draining.

On table-ware washing machine of the present invention, pump is vertical direction with the rotating shaft in addition, and passes through elastomer and its top and the bottom of fixed support.

Thereby can obtain sink enlarges, can hold more bigger tablewares and can reduce the table-ware washing machine of vibration and noise.

Technical scheme 1 of the present invention is a kind of table-ware washing machine, has sink, place the plate-basket of tableware, the Washing spray nozzle of jet cleaning water, rotation by motor is to the pump of washings pressurization, and the rotating changing device of described motor, the rotating shaft of described motor is located at the approximate vertical direction, simultaneously described pump also has by the 1st impeller to spue the 1st housing of washings of Washing spray nozzle, outside machine, discharge the 2nd housing of washings by the 2nd eddy current type impeller, the washings guide portion that is communicated with the 1st housing and the 2nd housing and sink, be characterized in, dispose the 3rd receded disk impeller at the back side of the 2nd impeller, rotation by the 3rd receded disk impeller is from the washings guide portion washings that spue in the 2nd housing, opposite with conventional construction, can make the washings that keep certain water level in the 2nd housing or the drainpipe.The 3rd impeller also can be brought into play drainability when draining.Thereby not only can avoid air to enter the 1st impeller, the washing function that obtains stipulating also can reduce the washing noise.

Technical scheme 2 of the present invention is in technical scheme 1 described table-ware washing machine, the suction inlet of the 2nd impeller is located at the side wall portion of the 2nd housing, through this suction inlet washings are guided into pump from sink head race is communicated with the 2nd housing, and this suction inlet is located at lower position, can make air suck the time-delay of the 2nd impeller when draining.Owing to reduced the surplus water water level, can improve the rinsing function, again owing to reduced the rinsing number of times, but conserve water.

Technical scheme 3 of the present invention is in technical scheme 1 or 2 described table-ware washing machines, and near washings guide portion one side the 3rd suction eye is provided with the roughly discoid resistance body of bore greater than the 3rd suction eye.Owing to be provided with the roughly discoid resistance body of this bore greater than suction inlet, when washing, can reduce the suction resistance of the 1st impeller, and when draining, then can stop the 3rd impeller to suck the air that exists in the 1st housing, the washings water supply resistance when reducing washing improves the washings pressure that spues.In addition, suck air in the 1st housing owing to suppressed the 2nd housing when draining, the drainability that gas shock can be caused reduces and is controlled at Min., and can reduce surplus water.Thereby can improve washing function, and improve rinsing function and conserve water by reducing the surplus water yield.

Technical scheme 4 of the present invention is in technical scheme 1 or 2 described table-ware washing machines, and the position by swirl vane inboard on the 2nd impeller disk is provided with the hole that is communicated with the 3rd impeller one side, makes the current of the approximate centre portion generation washings of the 2nd impeller.And can alleviate pressure differential between pump when rotation the 1st impeller one side and the 3rd impeller one side.Thereby, can improve foreign matter and pile up the impeded drainage cause, avoid motor to block, and too much air is sneaked into and is reduced drainage noise owing to having reduced draining.

Technical scheme 5 of the present invention is in technical scheme 1 or 2 described table-ware washing machines, in the hole that the 2nd housing setting is communicated with the washings guide portion, can spue the part the washings that spue from the 3rd impeller to the washings guide portion once more, and remaining water is spued in the 2nd housing and drainage path.That is,, can guarantee not suck air in pump, be in the suds, can reduce the ability that spues in drainage path because of the leftovers screen pack stops up when causing the labile state of pump from the drainage path of the 3rd impeller by the circulating path of washings is set.Especially the washings stable level in the time of can guaranteeing to wash in the drainage path.

Technical scheme 6 of the present invention is in technical scheme 1 or 2 described table-ware washing machines, in the hole that the 1st housing setting is communicated with the washings guide portion, can spue the part of the washings that spue from the 1st impeller to the washings guide portion once more, and remaining water is spued to Washing spray nozzle.That is, by the circulating path of washings is set in pump, make the part of air that enters in the 1st housing return the washings guide portion once more during gas shock in washing, can recover to be subjected to the ability that spues of the 1st impeller of air-flow shock effect as early as possible.Also have, when draining, the air during owing to washings and gas shock is discharged in the 1st housing rapidly, so can alleviate drainage noise significantly.

Technical scheme 7 of the present invention is in technical scheme 6 described table-ware washing machines, the hole that is communicated with the washings guide portion of handle is located on the 1st housing near the 1st impeller outer diameter or outside the external diameter and near the tongue-like part of the 1st housing in the 1st housing, and the direction of rotation during along draining makes the end slope in above-mentioned hole, and the portion of air in the time of can making washings or gas shock is effectively returned the washings guide portion once more.The time reduction of the pressure that spues can be controlled in the bottom line in washing, and when draining, discharge the washing water and air in the 1st housing easily, thus can avoid taking place once more noise in this washing of NZ sound, thus can reduce drainage noise significantly.

Technical scheme 8 of the present invention is in technical scheme 3 described table-ware washing machines, the hole that the setting of swirl vane inner side on the 2nd impeller disk is communicated with the 3rd impeller one side, and in hole that the 2nd housing setting is communicated with the washings guide portion, when washing, can alleviate of the influence of the 3rd impeller, and can when draining, stop the 3rd impeller to suck the air that exists in the 1st housing the 1st impeller.Thereby can improve washing function and drain function.Again, owing to make the approximate centre portion of the 2nd impeller produce the current of washings, and the pressure differential of the 2nd impeller and the 3rd impeller when having alleviated the pump rotation, pile up the impeded drainage that causes, avoid motor to block so can improve because of foreign matter, and too much air is sneaked into and reduced drainage noise during by the minimizing draining.And a part of washings that spue from the 3rd impeller are spued to the washings guide portion once more, remaining washings are spued in the 2nd housing and drainage path.That is,, can prevent reliably that the 3rd impeller from sucking from the air in the drainage path, can reduce the ability that spues in drainage path simultaneously in pump by the circulating path of washings is set.Promptly, even the leftovers screen pack stops up in the washing, spue the 1st impeller of usefulness of washings becomes the gas shock state, the ability that spues reduces, make the 1st impeller and draining spue usefulness the 2nd impeller and prevent that the pressure balance between the 3rd impeller that gas shock uses from going to pot, the washings in the drainage path can not discharged outside the machine yet.Thereby, can keep the washings stable level in the drainage path during washing.

Description of drawings

Fig. 1 is the structural map of the table-ware washing machine of the present invention the 1st embodiment.

Fig. 2 is the structural map of the table-ware washing machine of the present invention 2-the 6th embodiment.

Fig. 3 is the major part cutaway view of the pump of the present invention the 2nd embodiment.

Fig. 4 (a) is the major part cutaway view of the table-ware washing machine of the present invention the 2nd embodiment.

Fig. 4 (b) is the major part left view of same table-ware washing machine.

Fig. 5 is the major part cutaway view of pump of the table-ware washing machine of the present invention the 3rd embodiment.

Fig. 6 is the major part cutaway view of the pump of same table-ware washing machine.

Fig. 7 is the major part cutaway view of the pump of the present invention the 4th embodiment.

Fig. 8 is the major part cutaway view of the pump of same table-ware washing machine.

Fig. 9 is the major part cutaway view of the pump of the present invention the 5th embodiment.

Figure 10 is the major part cutaway view of the pump of same table-ware washing machine.

Figure 11 is the major part cutaway view of the pump of the present invention the 6th embodiment.

Figure 12 is the structural map of the table-ware washing machine of the present invention 7-8 embodiment.

Figure 13 is the cutaway view of same table-ware washing machine.

Figure 14 (a) is the major part cutaway view of the table-ware washing machine of the present invention the 8th embodiment.

Figure 14 (b) is the major part upward view of same table-ware washing machine.

Figure 15 is the structural map of traditional table-ware washing machine.

The specific embodiment

Below in conjunction with the description of drawings embodiments of the invention.

The 1st embodiment of the present invention at first is described.Fig. 1 is the structural map that is provided with the table-ware washing machine of the plate-basket 91 that holds tableware in sink 90.The 92nd, the pump that washings are pressurizeed, the 93rd, the heater that washings and tableware are heated, the 87th, have the Washing spray nozzle of the jet of jet cleaning water.Other 86 is screen packs that leftovers is separated, the 94th, and the control device that washing pump 3, heater 4 etc. is controlled.Described pump 92 be furnished with the 1st impeller 83 that utilizes eddy current type with washings to the 1st housing 84 that Washing spray nozzle spues and utilize eddy current type the 2nd impeller 80 washings are spued the 2nd housing 82 outside the machine equally.And in the middle of 2 housings, be provided with 3 directions with the 1st housing the 84, the 2nd housing 82, reach the washings guide portion 95 that sink 90 is communicated with.The 96th, the 1st suction inlet that is communicated with the 1st housing 84 from washings guide portion 95, the 97th, the 2nd suction inlet that is communicated with the 2nd housing 82 from washings guide portion 95.In addition, the 98th, to the CD-ROM drive motor that pump 92 drives, be bipolar induction motor.The 99th, the rotating changing device of this motor 98 carries out positive and negative running by the main coil of the capacitor of CD-ROM drive motor 98 and motor 98 and ancillary coil are connected to switch.And the 1st impeller 83 and the 2nd impeller 80 are loaded on the output shaft of motor 98, and 2 impellers rotate to same direction.

Below its action of explanation.At first, tableware is packed in the plate-basket 91, and connect switch not shown in the figures after being loaded on the assigned position of sink 90.In case switch connection, i.e. entry into service, control device 94 is at first carried out water supply operation from quantitative washings to sink 90 that supply with.Then carry out the main operation of washing, the washings that pressurize by pump 92 spray from the jet that is located on the Washing spray nozzle 87 with washing agent.

After washing operation through the master of stipulated time, promptly enter drainage procedure, discharge outside machine by pump 92 containing the washings of washing the dirt that falls from tableware etc.Then, continuously execution supply with again washings the water supply operation, speckle with rinsing process, and the drainage procedure of the tableware of washing agent and leftovers from the 1st wash mill jet cleaning water with rinsing, so repeat 4 times after whole washing procedure finish.

Below describe the structure of said pump 92 in detail and in the action of washing procedure.Sink 90 is communicated with the 1st impeller 83 through the 1st suction inlet 96 from the washings guide portion 95 that the water entering section with sink 90 bottoms is connected with pump 92, is communicated with the 2nd impeller 80 from the 2nd suction inlet 97 simultaneously.Under this occasion, be set at when the 1st impeller 83 clockwise directions rotate, during 80 counter rotations of the 2nd impeller, can suck and the washings that spue from washings guide portion 95 respectively, constitute so-called turbulence pump respectively.In addition, general turbulence type pump can switch the direction that spues and suck by changing direction of rotation.

At main operation or the rinsing process washed, motor 98 is clockwise direction rotations, and guides washings into the 1st impeller 83 from the 1st suction inlet 96 of washings guide portion 95.At this moment the 1st impeller 83 plays a role effectively, and washings are spued to wash to Washing spray nozzle.On the other hand, when being in this direction of rotation, the 2nd impeller 80 at first spues from the washings of the 2nd suction inlet 97 with drainage path, and then the air in suction drain path has lost the pressure capacity as pump at this moment, becomes idling conditions.And in case 80 idle running of the 2nd impeller because it has lost the pressure that spues, just make inhaled air be trapped in the 2nd housing 82 inside.Like this, this part air just can not enter in the 1st housing 84, can be stably to the Washing spray nozzle washings that spue.

In addition, when drainage procedure, make motor 98 do the inhour rotation by rotating changing device 99, thereby washings are guided into the 2nd impeller 80 from the 2nd suction inlet 97 of washings guide portion 95.At this moment the 2nd impeller 80 plays a role effectively, outside washings discharge machine.On the other hand, when being in this direction of rotation, the 1st impeller 83 sucks air from the jet of Washing spray nozzle 87, and lost the pressure capacity as pump this moment, becomes idling conditions.This part air is just because with same former of washing procedure thereby be trapped in the 1st housing 84 inside, so can not resemble traditional drainage procedure because of producing noise at suction air limit, low water level limit agitator treating water.This part air can not enter in the 2nd housing 82, and washings can stably spue.Yet, when water level drops to the 2nd impeller 80, though air also enter in the 2nd housing 82, because of the diameter of the 2nd impeller 80 less than the 1st impeller 83, so there is not too big noise.

As mentioned above, owing to be provided with washings guide portion 95, can wash and draining with 1 motor 92 in the centre of the 1st housing 84 and the 2nd housing 82.Thereby can reduce the shared space of pump and motor, but the full-size of the wash up of table-ware washing machine is increased.

1 pipeline of washings guide portion 95 and sink 90 usefulness is connected in the present embodiment in addition, and also available 2 pipelines of washings guide portion 95 are connected with the 2nd suction inlet 97 and sink 90 respectively certainly.

Below in conjunction with Fig. 2, Fig. 3 and Fig. 4 the 2nd embodiment of the present invention is described.

Fig. 2 is the table-ware washing machine structural map that vertical washing draining one pump is housed, Fig. 3 is the cutaway view of vertical washing draining one pump, and Fig. 4 is the partial sectional view and the left view thereof of vertical washing draining one pump, the 1st, and sink, the 2nd, hold the plate-basket of tableware, be located in the sink 1.The 3rd, to the pump of washings pressurizations, the 4th, to the heater of washings and tableware heating, the 5th, have the Washing spray nozzle of the jet 6 of jet cleaning water.The 7th, separate the screen pack of leftovers, the 8th, the control device that washing pump 3, heater 4 etc. is controlled.Said pump 3 have with centrifugal the 1st impeller to Washing spray nozzle 5 spue the 1st housing 10 of washings, with eddy current type the 2nd impeller 11 washings are discharged centrifugal the 3rd impeller 13 of being located at the 2nd impeller 11 back sides of the 2nd housing 12 outside the machine and the washings that in washing process, in the 2nd housing 12, spue.

In the middle of 2 housings, be provided with in addition at 3 directions and the 1st housing the 10, the 2nd housing 12 and with washings and guide the washings guide portion 15 that the head race 14 of pump 3 is communicated with into from sink 1.

The 16th, the 1st suction inlet that is communicated with the 1st housing 10 from washings guide portion 15, the 17th, the 2nd suction inlet that is communicated with the 2nd housing 12 from washings guide portion 15, the 18th, the 3rd suction inlet that is communicated with the 2nd housing 12 from washings guide portion 15.Above-mentioned in addition head race 14 is located at the suction inlet 17 of the 2nd impeller 11 below the side wall portion of the 2nd housing 12, promptly is located at the position lower than traditional approach.

Again, the 19th, to the motor that pump 3 drives, be bipolar induction motor.The 20th, the rotating changing device of this motor 19 (omitting diagram) is by doing positive and negative running to the capacitor of CD-ROM drive motor 19 and the main coil and the switching of ancillary coil connecting line of motor 19.In addition, the 1st impeller 9 and the 2nd impeller 11 and the 3rd impeller 13 are loaded on the output shaft of motor 19, and each impeller rotates to same direction.The 21st, with the drainage path of washings outside pump is discharged machine.

The 1st impeller 9 can be centrifugal, eddy current type or other modes.

The below action of explanation the 2nd embodiment.

At first, the tableware plate-basket 2 of packing into, be positioned over the assigned position in the sink 1 after, with switch connection not shown in the figures.In case switch connection, i.e. entry into service, control device 8 is at first carried out the water supply operation of supplying with quantitative washings in sink 1.Then, the washings by pump 3 pressurizations spray the main operation of washing of execution from the spray-hole 6 that is located on the Washing spray nozzle 5 with washing agent.After washing operation, promptly enter with pump 3 and will contain drainage procedure outside tableware etc. is washed the washings discharge machine of the dirt that falls through the master of stipulated time.Then, supply with again continuously washings the water supply operation, speckle with rinsing process, and the drainage procedure of the tableware of washing agent and leftovers from the 1st wash mill jet cleaning water with rinsing, finish whole washing procedure after so repeating 4 times.

Below describe the structure of said pump 3 in detail and in the action of washing procedure.Sink 1 is communicated with the 1st impeller 9 through the 1st suction inlet 16 from the washings guide portion 15 that the head race 14 with sink 1 bottom is connected with pump 3, is communicated with the 2nd impeller 11 from the 2nd suction inlet 15 simultaneously.In addition, be communicated with the 3rd impeller 13 through the 3rd suction inlet 18 from washings guide portion 15.Under this occasion, be set at when the rotation of the 1st impeller 9 and the 3rd impeller 13 clockwise directions, during 11 counter rotations of the 2nd impeller, can suck and the washings that spue from washings guide portion 15 respectively, constitute so-called centrifugal pump, turbulence pump respectively.In addition, general turbulence type pump can switch the direction that spues and suck by changing direction of rotation.

At main operation or the rinsing process washed, rotate by making motor 19 clockwise directions, and guide washings into the 1st impeller 9 from the 1st suction inlet 16 of washings guide portion 15.At this moment the 1st impeller 9 plays a role effectively, and washings are spued and wash to Washing spray nozzle 5.On the other hand, when same direction of rotation, the 2nd impeller 11 at first spues from the washings of the 2nd suction inlet 17 with drainage path 21, at this moment owing to the 3rd impeller 13 washings are spued in the 2nd housing from the 3rd suction inlet 18, the a part of washings that spue return the washings guide portion from the 2nd suction inlet, and remaining washings then are trapped in the drainage path 21.

Thereby being not only does not have air in the 2nd housing 12, the 1 housings 10 yet and enters, can be stably to Washing spray nozzle 5 washings that spue.

The optimal design of staying blade external diameter that washings water level in the drainage path 21 then can be by the 3rd impeller 13 and blade height etc. keeps stable.

In addition, when drainage procedure, make motor 19 do the inhour rotation by rotating changing device 20, and washings are guided into the 2nd impeller 11 from the 2nd suction inlet 17.At this moment the 2nd impeller 11 plays a role effectively, outside washings discharge machine.And then, same during with washing procedure as the 3rd impeller 13 of receded disk impeller, washings are spued in the 2nd housing 12 from the 3rd suction inlet.That is the effect that performance improves drainability when draining.

In case the execution drainage procedure, along with the reduction of washings water level, the 1st impeller 9 becomes fully and only stirs air state, and the idle running sound of the 1st housing 10 is just very little.Also have,, can make the washings that remain in the 1st housing 10, can alleviate the idle running sound in the 1st housing 10 to washings guide portion 15 drippages because at this moment motor 19 suspends.

And in a single day the washings water level reduces after carrying out drainage procedure, and 10 of the 1st housings become from washings guide portion 15 suction air state, and washings do not spue.And along with the decline of washings water level, the 1st impeller 9 becomes fully and only stirs air state, and the idle running change of tune of the 1st housing 10 gets very little.

And owing to washings are guided into the 2nd impeller 11,, produce in the short time at the utmost point that draining closes to an end so make the 2nd impeller 11 mix the air rotation and to produce the water level of noise very low from the 2nd suction inlet 17.

As mentioned above, by the 2nd impeller 11 of pump 3 being located at the below of the 1st impeller 9, and head race 14 is located at the suction inlet of the 2nd impeller 11 below the side wall portion of the 2nd housing 12, i.e. the position lower than traditional approach, can reduce discharge level, thereby reduced the surplus of addle, can improve in the next rinsing process washings to the dilution factor of dirt, improve the rinsing function.Thereby, even reduce the washings consumption of rinsing number of times or each rinsing, the rinsing function that still can obtain stipulating.Again, centrifugal pump more can obtain the washing of table-ware washing machine effectively and export with the necessary pump of pump than turbulence type pump, thus self-evident, can realize the miniaturization of drive motor and wash mill.

In traditional pump, adopt washing pump water sucking mouth and the draining structure of water sucking mouth is set respectively, and pump of the present invention is to come dual-purpose with head race 14 these 1 pipeline, so can save suction parts such as flexible pipe and flexible pipe clamp.

About the direction of rotation of motor, no matter the present invention is used to the washings that spue to which direction of rotation, can both obtain same effect.

As mentioned above, present embodiment is to be provided with the 3rd receded disk impeller at the back side of the 2nd impeller, and the suction inlet of the 2nd impeller is located at the side wall portion of the 2nd housing, through this suction inlet, the head race that washings are introduced the pump from sink is communicated with the 2nd housing, thereby no longer need check valve etc., can with simple construction of stable the washing function that obtains stipulating, noise in the time of can reducing simultaneously the washing draining, improve drainability, improve the rinsing function, reduce cost, and obtain making the table-ware washing machine of tableware spatial accommodation increase because of the wash mill miniaturization.

Below be the 3rd embodiment of the present invention.Fig. 5 and Fig. 6 are the cutaway views of vertical washing draining one pump, and the essential structure of structure member is identical with the 2nd embodiment shown in Figure 2, its explanation of Therefore, omited.

22 is the 2nd impeller 11 installation portions on motor 19.The 23rd, in washings guide portion 15, be fixed in the roughly discoid resistance body of the between centers of the 1st impeller 9 and the 2nd impeller 11, its external diameter is greater than the external diameter of the 3rd suction inlet 18.On the disk of the 2nd impeller 25, and be provided with the hole 24 that is communicated with the 3rd impeller 13 1 sides in the position of swirl vane inboard again.

In addition, the 1st impeller 9 can be centrifugal, eddy current type or other modes.

The elemental motion of present embodiment and the action of washing procedure are identical with the 2nd embodiment, omit explanation.

When adopting conventional construction, in washing procedure, the suction direction of the inhalation power of the 3rd impeller 13 and the 1st impeller 9 antithesis, so the 1st impeller 9 is promptly become suction resistance, the reduction that causes washings to spue and press, and, can alleviate the influence of 13 pairs of inhalation powers of the 3rd impeller by resistance body 23 is set between the 1st suction inlet 16 and the 3rd suction inlet 18.Thereby, can reduce the suction resistance of the 1st impeller 9, improve the washings pressure that spues.

The design optimization of blade external diameter that the washings water levels that are detained in the drainage path 21 can be by the 3rd impeller 13 and blade height etc. keeps stable in addition.

In addition in the conventional washing operation, the installation portion 22 of the 2nd impeller 25 on motor 19 piled up foreign matter easily because of no washings flow through, now produced the current of washings, thereby can reduce the accumulation of foreign matter significantly owing on the disk of the 2nd impeller 25, having the hole 24 that is communicated with the 3rd impeller 13 1 sides.

When adopting conventional construction, the washings that pressurizeed and spued by the 3rd impeller 13 spue in the 2nd housing 12 in addition, so take place acutely to conflict with the washings that pressurizeed and spued by the 2nd impeller 25.Especially in the drainage procedure latter stage that is mixed with air, washings and air are mixed in together, and huge noise can take place.

Yet in the present embodiment, owing between the 2nd impeller 25 and the 3rd impeller 13, have hole 24, and reduced pressure differential between 2 impellers, can reduce drainage noise significantly.Quantity as for hole 24, from eliminating the pressure differential between the 2nd impeller 25 and the 3rd impeller 13 and keeping the balance of impeller self rotation, no doubt can offer a plurality of in the position of an object, even but its quantity is 1, even the position is set is not an object's position, can fully obtain the effect of present embodiment yet.

In drainage procedure, do the inhour rotation by make motor 19 with rotating changing device 20, and guide washings into the 2nd impeller 11 from the 2nd suction inlet 17 of washings guide portion 15 again.At this moment the 2nd impeller 11 plays a role effectively, and washings are discharged outside the machine.In this occasion if adopt conventional construction, because the air in the 1st housing 10 is attracted by the 3rd impeller, owing to causing performance, reduces the air of sneaking in early days in the 2nd housing 12, and in the present embodiment, because the effect of resistance body 23, the air that is stranded in the 1st housing is difficult to be attracted by the 3rd impeller 13, sneaks into the interior time of the 2nd housing 12 so can postpone air.

In other words, can keep drain function more longways during draining, reduce the surplus water yield.Because the same during with washing procedure, be washings to be spued in the 2nd housing 12, in addition so improved drainage performance from the 3rd suction inlet 18 as the 3rd impeller 13 of receded disk impeller.

In drainage procedure, when adopting conventional construction, the air that is stranded in the installation portion 22 of the 2nd impeller 25 on motor 19 is difficult to discharge, the gas shock sound promptly takes place at the washing procedure initial stage, and in the present embodiment, air is easy to discharge outside pump 3, so the noise at washing procedure initial stage can not take place.

As mentioned above, because on the disk of the 2nd impeller, have the hole that is communicated with the 3rd impeller one side in the position of swirl vane inboard,, also can reduce the noise of table-ware washing machine when washing procedure initial stage and draining significantly so not only can prevent the accumulation of foreign matter in pump.

About the direction of rotation of motor, the whichever direction of rotation is used to the washings that spue in addition, and the present invention can obtain same effect.

As mentioned above, the table-ware washing machine of the 3rd embodiment roughly becomes discoid resistance body by being provided with between the 1st impeller and the 2nd impeller, has reduced surplus water and has improved the rinsing function, but and conserve water, improved washing function and drain function.Because on the disk of the 2nd impeller, the hole that is communicated with the 3rd impeller one side that has in the swirl vane inboard not only can prevent the accumulation of foreign matter in pump in addition, and the noise can make table-ware washing machine reduce washing procedure initial stage and draining significantly the time.

The 4th embodiment of the present invention below is described.

Fig. 7 and Fig. 8 are the cutaway views of vertical washing draining one pump, and the essential structure of its structure member is identical with the 2nd embodiment shown in Figure 2, its explanation of Therefore, omited.It is characterized in that newly having with washings guide portion 15 and the hole 27 that the 2nd housing 26 is communicated with, have special effect.In addition, the 1st impeller 9 can be centrifugal, eddy current type or other modes.

The below action of explanation the 4th embodiment.The elemental motion of its washing procedure is identical with described the 2nd embodiment, its explanation of Therefore, omited.

Especially in washing procedure, by the 3rd impeller 13 washings that in the 2nd housing 26 and drainage path 21, spue, though can prevent to suck air from drainage path 21, but when screen pack 7 serious obstructions, it is not enough that the inhalation flow of supply pump 3 promptly becomes, and pump 3 just can suck washings in drainage path 21.As a result, pump 3 is absorbed in utmost point labile state, and the washings that spue outside machine take place sometimes, makes phenomenons such as heater 4 empty burnings.

In order when pump 3 plays pendulum, not make outside the washings outflow machine yet, the surface that must reduce the 3rd impeller 13 ability that spues.And when adopting structure of the present invention, a part of washings that spue from the 3rd impeller 13 can be from the hole 27 return washings guide portion 15 once more.

In other words, can under the situation of the ability that does not reduce the washings that in the 2nd housing 26, spue, reduce the ability that spues on surface.Even thereby under the labile state in washing procedure, washings can not take place yet discharge the outer situation of machine.In addition, even 1 of the quantity in hole 27 even the position is set not at an object's position, still can fully obtain effect of the present invention.

As mentioned above, owing to have the hole that is communicated with the 2nd housing from the washings guide portion, especially can make table-ware washing machine when washing, keep stable water level in the drainage path.

The 5th embodiment of the present invention below is described.

Fig. 9 and Figure 10 are the cutaway views of vertical washing draining one pump, and the essential structure of its structure member is identical with the 2nd embodiment shown in Figure 2, its explanation of Therefore, omited.It is characterized in that newly having with washings guide portion 15 and the hole 29 that the 1st housing 28 is communicated with, have special effect.In addition, the 1st impeller 9 can be centrifugal, eddy current type or other modes.

The below action of explanation the 5th embodiment.The elemental motion relevant with washing procedure is identical with described the 2nd embodiment, its explanation of Therefore, omited.

Especially in washing procedure, by the 3rd impeller 13 washings that in the 2nd housing 12 and drainage path 21, spue, though can prevent to suck air from drainage path 21, but when screen pack 4 serious obstructions, it is not enough that the inhalation flow of supply pump 3 promptly becomes, and pump 3 just can suck washings in drainage path 21.As a result, air enters the 1st housing 28 very soon, makes the 1st impeller 9 lose the ability that spues.Yet because the effect in hole 29, the portion of air that enter in the 1st housing 28 are returned the washings guide portion once more, and the ability of the 1st impeller 9 is recovered slightly, and to Washing spray nozzle 5 air that spues.And in the process that repeats this one-period, the air in the 1st housing 28 reduces gradually, and the ability that spues of the 1st impeller 9 is recovered fully as a result.In addition in drainage procedure, be present in washings in the 1st housing 28 when pump 3 rotations and when time-out, spue or drip to washings guide portion 15 as soon as possible.Thereby the washings that can reduce the 1st impeller 9 that becomes the drainage noise reason significantly stir sound.

Again, when adopting technical scheme 6 described structures, if hole 29 is opened in the external diameter inboard of the 1st impeller 9, when not having the normal operation of generation such as gas shock, near because of the distance between above-mentioned hole 29 and the 1st impeller 9, can cause rotating speed and the proportional NZ sound of the number of blade on the contrary with the 1st impeller 9.Thereby in this occasion, by the position in hole 29 is located at the outside of the external diameter of the 1st impeller 9, and be located near the high tongue-like part of the pressure that spues 30, can prevent that not only the NZ sound from taking place, and can effectively play a role.Also have, if the direction of rotation of the end face that makes hole 29 during along draining tilts, the pressure that spues in the time of then can preventing to wash reduces, air or washings in the time of spuing draining effectively, and further reduce drainage noise.

As mentioned above, by being provided with from the hole that the washings guide portion is communicated with the 1st housing, can be promptly the caused ability reduction of gas shock recovering state when washing normal, make table-ware washing machine reduce drainage noise significantly.

The 6th embodiment of the present invention below is described.Figure 11 is the cutaway view of washing draining one pump.Its structure member is basic identical with the 2nd embodiment shown in Figure 2, its explanation of Therefore, omited.

In Figure 11, the head race 14 of washings being guided into pump 3 from sink 1 is communicated with in pairs with the 2nd housing 26 and washings guide portion 15, and the suction inlet 17 of the 2nd impeller 25 is located at the sidewall of the 2nd housing 26 simultaneously.The 23rd, in washings guide portion 15, be fixed in the roughly discoid resistance body of the between centers of the 1st impeller 9 and the 2nd impeller 25, its external diameter is greater than the external diameter of the 3rd suction inlet 18.In addition on the disk of the 2nd impeller 25, be provided with the hole 24 that is communicated with the 3rd impeller 13 1 sides at the inner side of swirl vane.Also be provided with the hole 27 that is communicated with the 2nd housing 26 from washings guide portion 15.Also have, the 1st impeller 9 can be centrifugal, eddy current type or other modes.

The below action of explanation the 6th embodiment.The elemental motion relevant with washing procedure is identical with described the 2nd embodiment, the Therefore, omited explanation.

Present embodiment has whole effects of above-mentioned the 2nd to the 4th embodiment, and because these structures are merged, so its effect is better.

That is, owing to both possessed resistance body 23, hole 27, the 1 impellers, the 9 suffered suction resistances that possess again on the 2nd housing 26 just reduce significantly, so the pressure that spues is further risen, have improved washing function significantly.And be located at the sidewall of the 2nd housing 26 because of the suction inlet 17 of the 2nd impeller 25, and and be provided with resistance body 23, thus the surplus water yield can further reduce draining the time, thus can further improve rinsing function and conserve water.

In addition owing to be provided with hole 24 on the 2nd impeller 25 and the hole 27 on the 2nd housing 26, exhaust when more helping the gas shock state, so it is shorter that pump 3 returns to the required time of the normal operation of airless impact, not only can improve washing function and drain function, improve reliability, and can reduce drainage noise and washing noise significantly.

Be provided with hole 24 and 27 everywhere in addition in pump 3, its diameter is greater than the minimum area portion in the head race 14, can avoid foreign matter to suck or piles up.

As mentioned above, adopt the table-ware washing machine of present embodiment, stability and reliability and the washing and the drain function of pump in the time of can improving the washing draining, the noise when reducing washing and draining significantly simultaneously.

The 7th embodiment of the present invention below is described.As Figure 12 and shown in Figure 13, table-ware washing machine main body 31 is provided with sink 32 in inside, and by feed water valve 33 feeding cold water or hot water in this sink 32.When device drives, washings because of the effect of the washing pump 36 that is subjected to motor 35 drivings in sink 32 inner loop.This circulating path is as follows, and washings are washed pump 36 from discharge outlet 34 and suck, and supplies with the Washing spray nozzle 37 of sink 32 inner bottom parts from this washing pump 36, and sprays from here, after having washed tableware, returns discharge outlet 34 once more.

Between Washing spray nozzle 37 and sink 32 bottoms, the heater 38 that heated scrub water is used is housed.But above Washing spray nozzle 37, be provided with the proper alignment tableware and can make washings be ejected into plate-basket 39 on the tableware effectively.On this plate-basket 39, be equipped with a plurality of mobile rollers 43 of using, can pull out to the front of table-ware washing machine main body 31.

Front face at sink 32 is equipped with switch door 40 freely in addition.Downside at sink 32 is equipped with underframe 42, fixed support sink 32.

On the axle of motor 35, be fixed with this motor 35 and self cool off the cooling fan 44 of usefulness.

Washing pump (pump) 36 is driven by motor 43 rotations, constitutes washing pump unit 47.This washing pump unit 47 is the vertical direction setting with the rotating shaft, and is connected with discharge outlet 34 and Washing spray nozzle 37 with 46 by flexible pipe 45, carries out the circulation of washings.

Support component 48 surrounds cooling fan 44, and is fixed on the motor 35.This support component 48 is as the wind-tunnel that sucks air from the top and blow to motor 35.By wind-tunnel is set like this, can make more effectively concentrated the blowing on the motor 35 of wind of cooling fan 44.In addition, by this support component 48, the support portion of support fixation sink 32 can be set also on the top of the cooling fan 44 that rotates.

Elastic support member (elastomer) 49 and 50 usefulness elastomers form, and are loaded near the center of above-below direction of washing pump unit 47.Elastic support member 49 inserts the lug boss 41 that protrudes from sink 32, and elastic support member 50 is stated from the underframe 42.In this occasion, underframe 42 is provided with the recess 51 that is used for 47 location, washing pump unit, engages with this recess 51.

Adopt such structure, when washing pump unit 47 is installed, near the center of above-below direction, set

elastic support member

49 and 50, for the direction of rotation of motor 35, the resistance that has only

flexible pipe

48 and 49 to cause, the free degree of direction of rotation is very big.Thereby, can be controlled at very low range to the vibration of motor 35 to the transmission of sink 32 or underframe 42.That is, can constitute vibration and the minimum table-ware washing machine of noise.

Again, when configuration washing pump unit 47, if make rotating shaft become level, then projected area from top to bottom is bigger, just needs interior high spatial on a large scale.And if make rotating shaft become plumbness, then projected area from top to bottom is less, only needs to give to reserve high spatial than the part of small size and get final product.Thereby, if washing pump unit 47 is arranged on the track outside of Washing spray nozzle 37, though then need higher space, yet do not need the whole bottom of sink 32 is upwards improved, so can be by making the position of sink 32 sink 32 hold large-scale tableware to decline at partial portion.

The 8th embodiment of the present invention below is described.The essential structure of its structure member is identical with the 7th embodiment shown in Figure 12, the Therefore, omited explanation.As shown in figure 14, be provided with a plurality of elastic support members 52, support the below of washing pump unit 47 in the radial position of departing from washing pump 36 shapes.In addition, central part is provided with elastic support member 49 above washing pump unit 47.

The most effectual way that elastomeric element suppresses the vibration transmission is to increase the height of elastomeric element.In the 7th embodiment, in the time that the position of washing pump 36 will be reduced as far as possible, be difficult to improve the height of the elastic support member 50 that supports at core sometimes.In this occasion, can higher elastic support member 52 be installed replace elastic support member 50 as mentioned above.

When adopting such structure, can not only reduce the installation site of washing pump 36 as far as possible, and can use and more effective inhibition to vibrate the elastic support member that transmits.

Below, self-evident just for the example of washing pump 36, also can do same processing to draining pump, washing draining one pump.

As mentioned above, technical solution of the present invention 1 described table-ware washing machine does not need check valve etc., and simple structure can stably obtain the washing function stipulated, and drain function improves, the wash mill miniaturization, and the tableware spatial accommodation increases.

Technical solution of the present invention 2 described table-ware washing machines especially can be avoided the impeded drainage that the foreign matter accumulation causes in the water impeller, have the low water level drain function, have improved rinsing function and energy conserve water owing to the surplus water yield after the draining reduces, and can also reduce noise.

Technical solution of the present invention 3 described table-ware washing machines can improve washing function by roughly discoid resistance body is set in pump, and owing to the surplus water yield after the draining reduces the rinsing function are improved, but conserve water.

Technical solution of the present invention 4 described table-ware washing machines pass through on the disk of the 2nd impeller, in the inboard of swirl vane the hole that is communicated with described the 3rd impeller one side are set, especially can avoid the foreign matter in the water impeller to pile up the impeded drainage that causes, and can reduce drainage noise.

Technical solution of the present invention 5 described table-ware washing machines are by being provided with from the hole that the washings guide portion is communicated with the 2nd housing, and the water level in the time of especially can keeping washing in the drainage path is stable.

Technical solution of the present invention 6 described table-ware washing machines are by being provided with from the hole that the washings guide portion is communicated with the 1st housing, the noise in the time of especially can reducing draining.

Technical solution of the present invention 7 described table-ware washing machines by be located on the 1st housing from the hole that the washings guide portion is communicated with the 1st housing, near the external diameter of the 1st impeller or outside the external diameter, near the tongue-like part of the 1st housing, and the direction of rotation of the end face that makes described hole during along draining tilts, NZ sound in the time of can avoiding relaundering takes place, and reduces drainage noise significantly.

Technical solution of the present invention 8 described table-ware washing machines are communicated with the 2nd housing and washings guide portion in pairs by making the head race that washings are guided in the pump from sink, and in pump, be provided with on the disk of the 2nd impeller of roughly discoid resistance body, the hole that is communicated with the 3rd impeller one side be set in the inboard of swirl vane, and be provided with from the hole that the washings guide portion is communicated with the 2nd housing, improved stability and the reliability of pump when washing and draining, washing and drainage performance have been increased substantially, the noise when having alleviated washing and draining.

Claims

1. table-ware washing machine, has sink, place the plate-basket of tableware, the Washing spray nozzle of jet cleaning water, rotation by motor is to the pump of washings pressurization, and the rotating changing device of described motor, the rotating shaft of described motor is located at the approximate vertical direction, simultaneously described pump also has by the 1st impeller to spue the 1st housing of washings of Washing spray nozzle, outside machine, discharge the 2nd housing of washings by the 2nd eddy current type impeller, the washings guide portion that is communicated with the 1st housing and the 2nd housing and sink

It is characterized in that, the 3rd receded disk impeller is set at the back side of the 2nd eddy current type impeller.

2. table-ware washing machine according to claim 1 is characterized in that the suction inlet of the 2nd impeller is located at the side wall portion of the 2nd housing, and through this suction inlet washings are guided into pump from sink head race is communicated with the 2nd housing.

3. table-ware washing machine according to claim 1 and 2, it is characterized in that, the suction inlet that leads to the 1st impeller or the 3rd impeller from the washings guide portion is located at respectively on the concentric circles of motor axis of rotation, and near washings guide portion one side the 3rd suction eye is provided with the roughly discoid resistance body bigger than the suction inlet bore of the 3rd impeller.

4. table-ware washing machine according to claim 1 and 2 is characterized in that, the inboard hole that is communicated with the 3rd impeller one side that is provided with of the swirl vane on the 2nd impeller disk.

5. table-ware washing machine according to claim 1 and 2 is characterized in that, the suction inlet that leads to the 1st impeller or the 3rd impeller from the washings guide portion is located at respectively on the concentric circles of motor axis of rotation, and in hole that the 2nd housing setting is communicated with the washings guide portion.

6. table-ware washing machine according to claim 1 and 2 is characterized in that, the suction inlet that leads to the 1st impeller or the 3rd impeller from the washings guide portion is located at respectively on the concentric circles of motor axis of rotation, and in hole that the 1st housing setting is communicated with the washings guide portion.

7. table-ware washing machine according to claim 6, it is characterized in that, the hole that the 1st housing is communicated with the washings guide portion is positioned on the 1st housing, near near the external diameter of the 1st impeller or the external diameter outside and the tongue-like part of the 1st housing, and the direction of rotation of the end face in described hole during along draining tilts.

8. table-ware washing machine according to claim 3 is characterized in that, the inboard hole that is communicated with the 3rd impeller one side that is provided with of swirl vane on the disk of the 2nd impeller, and in hole that the 2nd housing setting is communicated with the washings guide portion.