CN101653352B

CN101653352B - Control method for a dishwasher

Info

Publication number: CN101653352B
Application number: CN2009101704059A
Authority: CN
Inventors: 金圣镐; 朴永焕; 崔龙珍
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2008-08-21
Filing date: 2009-08-20
Publication date: 2011-09-28
Anticipated expiration: 2029-08-20
Also published as: KR20100023172A; EP2156775A2; EP2156775B1; CN101653352A; US20100043832A1; EP2156775A3

Abstract

The present invention is directed to a control method of a dishwasher. According to the control method of a dishwasher, an efficient drying cycle may be performed. Furthermore, because dishes are heated by using steam, energy may be conserved and a simpler structure of a dishwasher may be provided without the need for a heater for heating the air inside the washing compartment.

Description

The control method of dish-washing machine

The application requires the rights and interests of the 10-2008-0081799 korean patent application submitted on August 21st, 2008, this application with referring to mode include this paper in, set forth completely as here having carried out.

Background of invention

Technical field

The present invention relates to a kind of control method of dish-washing machine.More particularly, the present invention relates to a kind of control method of dish-washing machine, this method can be guaranteed enough detersive efficiencies, is used to hold the storage tank heater that is provided with in the storage tank of washings or washings and can reduce power dissipation and need not to move.

Background technology

Conventional dishwashers is the autowash device normally, (after this being called a bowl dish) jet cleaning water and cleaning agents such as the dirty bowl dish of this machine in being placed on bucket, glassware, flatware, stay the foreign matter such as food debris on bowl dish with removal, thus a washing bowl dish automatically.

Dish-washing machine moves according to cycles of washing usually, is ejected in the bucket that accommodates bowl dish to remove foreign matter from the bowl dish with the washings that will be mixed with cleaning agent.Dish-washing machine also has rinse cycle, is used for will not having after the executed cycles of washing washings of cleaning agent to be ejected into and removes residual foreign matter and cleaning agent in the bucket.At last, after washing and rinse cycle, carry out the oven dry circulation usually and dry a bowl dish.Recently, developed already a kind of can be in cycles of washing heated scrub water further improve the dish-washing machine of clean result.

Conventional dishwashers is carried out washing, rinsing and oven dry circulation usually in succession.As mentioned above, heated scrub water during washing or rinse cycle recently.Why heated scrub or washings in washing or rinse cycle are in order to make detersive efficiency the highest.So,, the storage tank heater is set in preserving the storage tank of washing/washings for heated scrub water or washings.

But the storage tank heater uses electric heater, and there are some shortcomings in electric heater.Electric heater can consume a large amount of power above system's actual needs, therefore reduces the power efficiency of system.

Dish-washing machine may be better than hand washing, shortens to be used to wash the time of a large amount of bowls of dish and to reduce the water yield.But it is unfavorable that the high power consumption of the dish-washing machine that is caused by electric heater may make its user for the operation dish-washing machine.

Summary of the invention

Thereby, the present invention relates to a kind of control method of dish-washing machine.This control method can be carried out oven dry efficiently.

Other advantage of the present invention and characteristic ground can be set forth from following specification, and partly can display when consulting hereinafter concerning the technology people of this area maybe and can be understood from the practice of invention.Can realize and obtain these advantages of the present invention by the structure of specifically noting in its printed instructions and its claims and the accompanying drawing.

In order to realize these and other advantage, and according to purpose of the present invention, as this paper specific implementation and wide in range as described in, provide a kind of control method of dish-washing machine, this dish-washing machine to comprise the washing chamber, be configured to hold the storage tank of water, steam generator and at least one spray arm.This method can comprise the execution cycles of washing, and cycles of washing comprises at least one the shelf injection water in being arranged on the washing chamber and supplies with steam to the washing chamber, supplies with steam and injection water and alternately repeat, till water temperature reaches default first temperature; And oven dry, oven dry comprises that the temperature of the bowl dish that holds reaches till default second temperature, and heated air in the washing chamber is discharged to the outside by coming the heated scrub chamber to washing chamber's supply steam in the washing chamber.

In one embodiment, first temperature can be between 47 ℃ to 53 ℃.Second temperature can be between 63 ℃ to 67 ℃.Supply steam when carrying out cycles of washing can be carried out more than 3 times and carry out 3 to 5 minutes.Supply steam during oven dry can be carried out more than 15 minutes.

On the other hand, a kind of control method of dish-washing machine, this dish-washing machine comprises the washing chamber, is configured to hold the storage tank of washings, steam generator and at least one spray arm, this control method comprises: carry out cycles of washing, this cycles of washing comprises at least one the shelf injection water in being arranged on the washing chamber and supplies with steam to the washing chamber, till water temperature reaches default first temperature, under the pent state of storage tank heater, alternately repeat injection water and supply with steam, and the temperature that supplies to the water of washing chamber rises and surpasses preset temperature; And supply with steam and air is discharged outside the washing chamber to the washing chamber, the temperature of the bowl dish in being placed on the washing chamber reaches till default second temperature.

In one embodiment, first temperature can between 47 ℃ to 53 ℃ and second temperature can be between 63 ℃ to 67 ℃.Supply steam when carrying out cycles of washing can be carried out more than 3 times and each 3 to 5 minutes.Supply steam during oven dry can be carried out more than 15 minutes.

Aspect another, a kind of control method of dish-washing machine, this dish-washing machine comprises the washing chamber, is configured to hold the storage tank of water, steam generator and at least one spray arm, and this control method can comprise the injection water to the washing chamber, and by using steam that the temperature of washings is raise; And supply with steam to the washing chamber and temperature in the washing chamber is raise and, carry out discharged air after the temperature when supplying with steam in the washing chamber raises from being discharged into outside the washing chamber air washing is indoor.

In each embodiment, the temperature of washings is raise by alternately repeating injection water and supplying with steam.Injection water and supply steam alternately repeat more than three times.By supply to the steam of washing chamber at the steam generator place, the temperature of washings can raise gradually.

According to the control method of this dish-washing machine, can guarantee detersive efficiency and do not move the storage tank heater that is provided with in the storage tank that holds washings or washings.In addition, also can reduce energy dissipation.

In addition, do not comprise at dish-washing machine under the situation of storage tank heater, can the temperature of washings or washings be raise by steam.So,, also can guarantee corresponding washing efficient even if there is not the storage tank heater to add hot water.

Should be understood that above general description of the present invention and following detailed description are exemplary and explanat, and aim to provide further explanation as the present invention for required protection.

Description of drawings

Comprise that accompanying drawing is included in the application and a formation part wherein for further understanding the present invention and accompanying drawing, these accompanying drawings illustrate embodiments of the invention, and are used from explanation principle of the present invention with specification one.

In the accompanying drawing:

Fig. 1 is the cutaway view that schematically shows the dish-washing machine of controlling according to the exemplary embodiment of the control method of the embodiment of the invention; And

Fig. 2 illustrates the schematic diagram according to the overall operation of the dish-washing machine of the embodiment of the invention.

The specific embodiment

Now will be in detail with reference to specific embodiments of the invention, their example shown in the drawings.In the case of any possible, identical Reference numeral will be used to indicate identical or similar parts in institute's drawings attached.

Fig. 1 is the cutaway view that schematically shows the dish-washing machine of controlling according to the exemplary embodiment of the control method of the embodiment of the invention.

With reference to Fig. 1, now will explain the structure of dish-washing machine.This dish-washing machine can comprise: housing 100, and it limits its outward appearance; Door 120, it can open and close with housing 100 inside of can leading to; Controller 102, the function of its control dish-washing machine; And control panel 130, it is installed on housing 100 or the door 120, thereby makes the user can operate dish-washing machine.

In housing 100, can be provided with the washing chamber 150 that limits by bucket 110.The bowl dish can be placed in the washing chamber 150.Storage tank 200 is arranged on bucket 110 belows.Storage tank is configured to hold the water such as washings and washings.Washing pump 210 and filter (not shown) can be set in storage tank 200.Washing pump 210 pumps are inhaled the washings and the filter (not shown) that are contained in the storage tank 200 and are filtered sewage.In addition, storage tank heater 290 can be set in storage tank 200 adds heat storage and holds water in the storage tank 200.

First feed pipe 250 can be connected with storage tank 200 with drainpipe 270.Can also can the washings in the storage tank 200 be discharged into the outside from the new water purification of external water source suction by first feed pipe 250 by drainpipe 270.Can the water supply that first feed water valve 255 controls to storage tank 200 be installed along first feed pipe 250.

Can be in bucket 110, particularly at least one shelf and spray arm be set in washing chamber 150.The bowl dish is placed on the shelf and sprays the water of inhaling by washing pump 210 pumps to shelf by spray arm.

As shown in Figure 1, top shelf 160 and lower shelf 170 can be separately positioned in the upper and lower of washing chamber 150.Upper spray 230 and lower spray arm 220 can be provided with towards top shelf 160 and lower shelf 170 respectively, thereby spray the water of being inhaled by washing pump 210 pumps.Top jet nozzle 240 also can be set spraying downwards by the water that pump 210 pumps are inhaled in the top of washing chamber 150.

In addition, can supply with steam to washing chamber 150 by using washing pump 210 and spray arm 230 and 220.Also steam generator 300 can be set in dish-washing machine, this steam generator can be independent of the operation of storage tank heater 290 ground.As shown in Figure 1, steam generator 300 is communicated with first feed pipe 250 and is communicated with washing chamber 150 by steam suppling tube 280.Can the water supply that second feed water valve 265 controls to steam generator 300 be installed at second feed pipe, 260 places.

Steam generator 300 can comprise that heating is fed to the level sensor 320 of water levels in the steam heater 310 of water of steam generator 300 and the sensing steam generator 300.But level sensor 320 sensings are low water level and high water level for example.If low water level be predetermined to be the protection steam generator 300 steam heater 310 in case water level fall too lowly and suffer damage.High water level is predetermined to be and prevents that the water that supplies in the steam generator 300 from overflowing from steam generator 300.

In addition, steam generator 300 can comprise that steam supply valve (not shown) is with by opening and closing the steam flow of controlling by steam suppling tube 280.It is arranged for according to predetermined washing or vapor recycle and in a planned way introduces steam.

In the reservations office of storage tank 200 dustiness sensor (not shown) can be set, it measures for example dustiness of bucket 110 interior circulated washing water.

In addition, door 120 can comprise exhaust fan 190 and exhaust manifolds 192, with the 150 discharge humid air from the washing chamber.

Controller 102 can be controlled dish-washing machine according to the predetermined instruction that is stored in the memory (not shown).Controller 102 can operationally connect with control panel 130, washing pump 210 and steam generator 300 at least, thereby they can move according to the selection of user on control panel 130.

Can determine the operational mode of dish-washing machine according to user's selection or the bowl that is washing dish type.Certainly, also can be according to the dustiness predetermined running pattern of the bowl dish that will wash.That is, in this example embodiment, can in dish-washing machine, work out a plurality of operational modes in advance.If worked out operational mode in advance, then can determine the revolutions per minute of motor and/or the amount of cleaning agent according to operational mode.

Control method and operation according to the dish-washing machine of the embodiment of the invention are described now.The control method of dish-washing machine can comprise carries out cycles of washing, rinsing and oven dry circulation.During cycles of washing, can remove food debris residual on bowl dish.Then, in case finish cycles of washing, just can during rinse cycle, carry out rinsing to the bowl dish.Drying cycle period, can remove moisture residual on bowl dish then.In order to carry out concrete function, can carry out less process on three said process discontinuous ground.

Now discuss the control method of the dish-washing machine of example embodiment in more detail.Fig. 2 illustrates the schematic diagram according to the overall operation of the dish-washing machine of the embodiment of the invention.This control method can comprise to be carried out preliminary cycles of washing (P), carry out row cycles of washing (W), rinsing (R) and dries (D).

At first, during preliminary cycles of washing (P), can spray the water of supplying with from external water source by the bowl dish in washing chamber 150, and heat without storage tank heater 290.Can carry out preliminary cycles of washing (P) with preliminary food debris and the softening difficult any chip of removing on the bowl dish of removing.

At this moment, the water of preliminary cycles of washing (P) sprays and comprises by using upper spray 230 to supply with water (after this being called " top injection ") and supplying with water (after this being called " bottom injection ") by use lower spray arm 220.Spray on top and the bottom injection can alternately repeat any number of times, carries out preset period of time.For example, spray on top and the bottom injection can alternately repeat some minutes.The water that uses during preliminary cycles of washing (P) can be supplied with and can be for example cold water or warm water from outside watering.

Although warm water tends to improve detersive efficiency and shortens wash time, in this example embodiment, preferably do not supply with or use warm water to save energy consumption in this step.Therefore, as shown in Figure 2, the water that supplies to dish-washing machine repeats its course of injection and does not change temperature (Tw).

Finish in case carry out preliminary cycles of washing (P), just can begin to carry out main cycles of washing (W).In main cycles of washing (W), can repeat to supply with till water (ws1, ws2, ws3) and supply steam (st1, st2, st3) pre-conditioned up to satisfying (w1) preset period of time.

The supply of water (ws1, ws2 and ws3) can separate or the supply (st1, st2 and st3) of flush away foreign matter and steam can be soaked and soften and is bonded at the lip-deep foreign matter of bowl dish from the bowl dish.Repeat steam and supply with (st1, st2, st3 ... stn) and water spray (ws1, ws2, ws3 ... wsn) temperature of washings is raise gradually.This is to carry out heat exchange owing to being ejected into the water in the washing chamber and comprising the air of also introducing the steam in the washing chamber 150.

Steam be can repeat and (st1, st2, st3 supplied with ... stn) and water spray (ws1, ws2, ws3 ... wsn), till the temperature of washings reaches default first temperature.Certainly, the pre-determined number that also can repeat according to steam or washing but not predetermined temperature is preset this condition.

In addition, in one embodiment, each steam supplying step (st1, st2, st3 ... stn) can carry out 3 to 5 minutes and can carry out more than three times.Therefore, alternately repeat steam supplying step (st1, st2, st3 ... stn) and water spray step (ws1, ws2, ws3 ... wsn) more than three times.In addition, can use upper and

lower spray arm

220 and 230 to carry out water spray step (ws1, ws2, ws3 ... wsn).

Specifically, as shown in Figure 2, the running time of steam feed unit (T (st)) can be between about 3 to 5 minutes.In Fig. 2, steam is supplied with and is repeated ten once.

If come employed water during heated scrub and the rinse cycle by storage tank heater 290, may consume big energy.Therefore, according to the control method of this exemplary embodiment, efficiently the water heating be need not to move storage tank heater 290.In addition, no matter whether be provided with or start storage tank heater 290, all can use the raise temperature of washings of steam.

Can be near about 50 ℃ in cycles of washing (W) by the temperature of steam-heated washings.As shown in Figure 2, at each water spray step (ws1, ws2, ws3 ... wsn) in, be arranged on upper spray in the washing chamber and lower spray arm can predetermined time interval injection water alternately.First temperature (T1) can be in the scope between 47 ℃ to 53 ℃, thereby can wash a bowl dish efficiently.

In case finish cycles of washing (W), can discharge the washings that use in the cycles of washing (W) and during rinse cycle (R), add and use new water.In case supplied with new water, just carried out rinsing (R).But, if necessary, water discharging and new water supplying step repeated several times can be floated dishwashing to guarantee rinse cycle (R) fully with new water purification.

As shown in Figure 2, rinse cycle (R) can comprise first rinse step (r1) and second rinse step (r2).The temperature (wash temperature) of introducing the washings that raise gradually in the steam then during cycles of washing (W) can reduce during rinse cycle (R) gradually.Why wash temperature reduces is that storage tank heater 290 cuts out, and is supplying with new water because having stopped steam supplies with.During rinse cycle (R), to come the injection water scheduled time slot be preferable by being used alternatingly the upper and lower spray arm similarly with cycles of washing (W).

In case finish rinse cycle (R), just can begin oven dry circulation (D).Oven dry circulation (D) can comprise by the wash temperature that raises to washing chamber's 150 supply steam (d1), till the temperature that is contained in bowl dish wherein reaches default second temperature (T2).This drying cycles (D) can comprise that also 150 inside are discharged to outside (d2) with humid air from the washing chamber.Can again the steam that produces at the steam generator place be supplied to washing chamber 150.Can be contained in the temperature of the bowl dish in the washing chamber 150 by Steam Heating then, and need not auxiliary heater.

Temperature in the washing chamber 150 is denoted as dashed curve A by the curve map of Fig. 2 in period D.Block curve among this figure is for period D and represents the temperature of washings or hold the temperature of the storage tank heater of washings.Can determine finishing by for example washing chamber's 150 interior temperature in oven dry cycle period heating process.

In one embodiment, the time (T (d1)) of supply steam can be for more than 15 minutes during heating period (d1).Passing through steam generator 300 when washing chamber 150 supplies with steam, can supply water to steam generator 300.

In one embodiment, the scope of second temperature (T2) can be between 63 ℃ to 67 ℃.This temperature range makes it possible to dry a bowl dish by heat cycles (D) discharge of heated air afterwards (d2).Therefore, if the temperature in the washing chamber 150 reaches this second temperature, then start exhaust fan 190 with 150 discharge humid air, thereby can dry a bowl dish efficiently from the washing chamber.Can during the heating (r1) of oven dry circulation (D), make the water evaporates that remains in the rinse cycle (R) on bowl dish, and moisture can pass through discharge process (d2) discharge.

To those skilled in the art, obviously can make various remodeling and modification and do not break away from the spirit or scope of the present invention the present invention.Therefore, the present invention is intended to contain its any remodeling and modification, as long as they drop in the scope of claims and equivalent thereof.

Claims

1. the control method of a dish-washing machine, described dish-washing machine comprises the washing chamber that wherein holds bowl dish, the storage tank that is configured to hold water, steam generator, at least one shelf and at least one spray arm, described method comprises:

Carry out cycles of washing, described cycles of washing may further comprise the steps:

Towards described shelf injection water, and

Supply with steam to described washing chamber, wherein alternately repeat the step of described injection water and supply steam, till the temperature of described water reaches default first temperature; And

Carry out the oven dry circulation, described oven dry circulation may further comprise the steps:

Heat described washing chamber by steam being supplied to described washing chamber, till the internal temperature of described washing chamber reaches default second temperature, and

In case reach described default second temperature, just with heated air outside described washing chamber is discharged to described washing chamber.

2. control method as claimed in claim 1 is characterized in that, described first temperature is between 47 ℃ to 53 ℃.

3. control method as claimed in claim 1 is characterized in that, described second temperature is between 63 ℃ to 67 ℃.

4. control method as claimed in claim 1 is characterized in that, the step of injection water and supply steam replaces more than the triplicate during the described cycles of washing, and the step of each supply was carried out 3 to 5 minutes.

5. control method as claimed in claim 1 is characterized in that, supplies with the step of steam and carry out above 15 minutes in the oven dry circulation.

6. the control method of a dish-washing machine, described dish-washing machine comprises the washing chamber that wherein holds bowl dish, the storage tank that is configured to hold water, steam generator, at least one shelf and at least one spray arm, described method comprises:

Towards described shelf injection water, and

Supply with steam to described washing chamber, till the temperature of described water reaches default first temperature, wherein when cutting out, the storage tank heater alternately repeats the step of described injection water and supply steam, and till the temperature of the water that supplies to described washing chamber raises above described default first temperature; And

Supply with steam to described washing chamber; And

Air is discharged to outside the described washing chamber, till the internal temperature of described washing chamber reaches default second temperature.

7. control method as claimed in claim 6 is characterized in that, described first temperature between 47 ℃ to 53 ℃ and described second temperature between 63 ℃ to 67 ℃.

8. control method as claimed in claim 6 is characterized in that, the step of injection water and supply steam replaces more than the triplicate during the described cycles of washing, and the step of each supply was carried out 3 to 5 minutes; And

Supplying with the step of steam in the oven dry circulation carries out more than 15 minutes.

9. the control method of a dish-washing machine, described dish-washing machine comprises the washing chamber that wherein holds bowl dish, the storage tank that is configured to hold water, steam generator, at least one shelf and at least one spray arm, described method comprises:

To described washing chamber injection water;

Supply with steam to described washing chamber for the first time, so that the temperature of washings raises;

Supply with steam to described washing chamber for the second time, so that the temperature in the described washing chamber raises; And

Outside described washing chamber was discharged into described washing chamber, wherein the temperature in described washing chamber had been elevated to the step that predeterminated level is carried out described discharged air afterwards with air.

10. control method as claimed in claim 9 is characterized in that, by the step that alternately repeats described injection water and supply steam the temperature of described washings is raise.

11. control method as claimed in claim 10 is characterized in that, alternately repeats described injection water and supplies with the step at least three times of steam.

12. control method as claimed in claim 11 is characterized in that, by the steam that supplies to described washing chamber from described steam generator the temperature of described washings is raise gradually.