CN1148149C - Method for operating dishwashing machine - Google Patents
Method for operating dishwashing machine Download PDFInfo
- Publication number
- CN1148149C CN1148149C CNB018016189A CN01801618A CN1148149C CN 1148149 C CN1148149 C CN 1148149C CN B018016189 A CNB018016189 A CN B018016189A CN 01801618 A CN01801618 A CN 01801618A CN 1148149 C CN1148149 C CN 1148149C
- Authority
- CN
- China
- Prior art keywords
- cleaning liquid
- pressure
- gaseous
- liquid
- conveying medium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/0002—Washing processes, i.e. machine working principles characterised by phases or operational steps
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L2601/00—Washing methods characterised by the use of a particular treatment
- A47L2601/03—Pressurised, gaseous medium, also used for delivering of cleaning liquid
Landscapes
- Washing And Drying Of Tableware (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Detergent Compositions (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Bakery Products And Manufacturing Methods Therefor (AREA)
Abstract
The invention relates to a method for operating a dishwashing machine, in which the items to be cleaned are exposed to a cleaning fluid. The aim of the invention is to save energy and water and to obviate the need for special supply requirements during the use of said method. To achieve this, the cleaning fluid is supplied using a pressurized gaseous supply medium.
Description
Technical field
The present invention relates to wash a kind of operation method of the dish-washing machine of tableware to be cleaned with a kind of wash liquid.
Background technology
In up to now whole known dish-washing machine especially domestic bowl-washing, tableware to be cleaned all is to wash continuously with a kind of cleaning liquid, and under normal circumstances, cleaning liquid is made up of water and the washing agent or the abluent that may add.
This cleaning fluid generally is transported to spray equipment by liquid-transport pipe-line with a circulating pump that for example is designed to centrifugal pump from a fluid storage tank of filling with continuously, with this device cleaning liquid is added on the tableware to be cleaned.
When tableware to be cleaned carries out this cleaning, by in cleaning fluid, adding a certain amount of chemical addition agent but mainly be to reach enough cleaning performances by the mechanical friction of enough washing for a long time and in this whole time course, the foul on the tableware to be cleaned being carried out of tableware to be cleaned.In other words, except when carrying cleaning liquid, need consuming energy, also need a long cleaning procedure.
When using centrifugal pump,, thereby influence the conveying capacity and the efficient of pump because centrifugal action causes the separation of gas or solids.
When general pump absorbing method, when for example using common pump, liquid must be under the static pressure effect of self from a fluid storage tank inflow pump.The movable part of pump, promptly motion parts is that active wheel produces a negative pressure also in the liquid suction pump under the centrifugal pump situation.The inlet restriction of this negative pressure liquid body.If the static pressure of suction side is not enough to be pressed into enough amount of liquid in the pump and the above-mentioned negative pressure of restriction, then the absolute pressure that produces on the suction connection may drop to the steam pressure that is lower than liquid.Consequently, liquid evaporates, and replaces liquid to enter in the pump with steam.Like this, the conveying capacity of pump will drop to the very little part of regulation conveying capacity.In addition, be called in the process of cavitation erosion at this and can produce big noise, this noise is owing to the steam bubble condensation causes.
At higher temperature with when existing solids to be so-called hair tonic point (Keim), since the steam pressure increase promptly move on to atmospheric pressure near, when pump sucks liquid heat and dirty (especially true in dish-washing machine), produce this class phenomenon especially severe and frequent, this can cause the above-mentioned serious interference that moves, even the destruction that causes pump, and cause above-mentioned too big noise.
For fear of these shortcomings, as mentioned above, should manage to allow liquid under the enough hydrostatic pressure of self for example from a fluid storage tank inflow pump.For this reason, for example must keep the minimum altitude of liquid in this fluid storage tank in the suction side of pump is so-called clean suction pressure head (NPSH), thereby produces required static pressure.This (being called lift usually) liquid minimum altitude can not always not be guaranteed, because for example this is impossible on the space of dish-washing machine, and certainly will make the complex structure and the costliness of dish-washing machine, in other words, because will need lay in the additional cleaning liquid that is in operation the most not for this reason, be that people are undesirable.
Summary of the invention
So the objective of the invention is to propose a kind of operation method of above-mentioned that class dish-washing machine, energy-conservation, the water saving of this method, and it uses the special lift condition of need not following.
According to the present invention, this purpose is to realize like this, it is the operation method of the dish-washing machine that in dish-washing machine, washes of a kind of tableware to be cleaned with cleaning liquid, wherein, this cleaning liquid is pressed certain hour at interval with a kind of gaseous conveying medium under pressure, carrying of pulsed, it is characterized by, this cleaning liquid is carried with a kind of beat-type ballistic method, with this beat-type ballistic method the time, cleaning liquid is applied in a pressure by gaseous conveying medium, this pressure alternately changes between two pressure stages like this, promptly when producing the low-pressure level of negative pressure, suck cleaning liquid, and by applying one when producing the elevated pressures level of overvoltage, cleaning liquid is carried in the throughput direction that requires then.
Need not special lift and suction condition when carrying cleaning liquid with a kind of gaseous conveying medium under pressure, this can make dish-washing machine reach better simply structure.Owing to carry cleaning liquid without pump, thus do not need the minimum injection rate of cleaning liquid, thereby described prior art relatively can reduce water consumption during with beginning.Like this, the centrifugal pump that moves with the continuous electricity consumption of prior art compares, and also can use electric energy less when carrying cleaning liquid.In other words, the present invention has successfully proposed the operation method of a kind of energy-conservation, the water saving of dish-washing machine, and its application need not to follow special lift condition.
According to a preferable feature of the present invention, cleaning liquid is carried by certain time interval with a kind of gaseous conveying medium under pressure.In the water supply time interval of tableware to be cleaned, when each water supply began, the pressure of cleaning liquid supplied body rose, and when supplying water end, the pressure decline of cleaning liquid supplied body. at every turnPractice shows, pressure by cleaning liquid this alternately rises and descends and cause alternately rising and descend and can being issued to enough cleaning performances in the situation of the water supply duration shorter than above-mentioned prior art of the mechanical force that affacts on the tableware foul to be cleaned thus, thereby shortens the duration of cleaning procedure.
According to another feature of the present invention, the conveying of cleaning liquid is a pulsed, and the alternately rising and the decline that so just can produce the pressure of cleaning liquid in a short period of time cause thus that also the replacing of mechanical force that affacts on the tableware to be cleaned rises and decline.Practice shows, can reach further significantly improving of cleaning performance under the situation of tableware flushing short period to be cleaned therefrom.
According to a preferred embodiment of the present invention, the ratio of the duration at the time of delivery interval of cleaning liquid and the conveying duration of cleaning liquid is approximately 3: 1, wherein according to an advantageous embodiments of the present invention, the conveying duration of cleaning liquid is 0.5 second.Make at the cleaning performance that is added to the cleaning liquid on the tableware to be cleaned under the pressure with this very short pulse duration and to have reached optimization.
According to a preferred embodiment of the present invention, in order to realize the flushing of tableware to be cleaned with simple methods, above-mentioned gaseous conveying medium is carried with a kind of pumping method of beat-type.
According to an advantageous embodiments, the pumping method of this beat-type is achieved in that promptly for example piston pump or diaphragm type pump wait the pumped (conveying) medium of carrying gaseous state by the pump of certain beat work with one.
Another kind of solution is that gaseous conveying medium also can be carried cleaning liquid by certain beat from a source of the gas.
According to a kind of preferred embodiment, cleaning liquid is carried with a kind of beat-type ballistic method, with this beat-type ballistic method the time, cleaning liquid applies a pressure by gaseous conveying medium, this pressure alternately changes between two pressure stages like this, promptly when producing the low-pressure level of negative pressure, suck cleaning liquid and by applying one when producing the elevated pressures level of overvoltage, cleaning liquid is then carried in the throughput direction that requires.By applying low pressure,, can suck enough amounts although flooded suction is lower.By apply higher pressure next time, cleaning liquid carries out forced conveyance by squeezing.Owing to must suck gaseous conveying medium in order to compress also, so can also be used to this negative pressure that exists anyway to carry cleaning with this measure, liquid particularly be used for quickening to carry the wake flow of the new cleaning fluid scale of construction to be carried.
The pumped (conveying) medium of gaseous state is air preferably, and this so modal gas just is used to carry and cleans.
Liquid is according to a preferred embodiment of the present invention, in the process that a subroutine procedure " dries up ", gaseous conveying medium is introduced in the process chamber of dish-washing machine, like this, anyway the gaseous conveying medium of Cun Zaiing (air) just can improve when drying up humidity residual on the tableware to be cleaned and dries up effect, and significantly shortens the duration that subroutine procedure " dries up ".
Describe the present invention in detail below in conjunction with embodiment shown in the drawings.
Description of drawings
Fig. 1 has the schematic diagram of the domestic bowl-washing of a device of implementing the inventive method;
Fig. 2 implements the schematic representation of apparatus of the inventive method;
Fig. 3 is by the time course of an injection pulse of the inventive method.
The specific embodiment
In an embodiment, the inventive method is described with domestic bowl-washing shown in Figure 1 25, and a device 1 that is used for implementing the inventive method has been installed in this dish-washing machine.In this domestic bowl-washing 25,, in as the water of cleaning liquid, be mixed with washing agent or abluent in case of necessity, also have the food residue of washing off with a kind of cleaning liquid flushing unshowned tableware to be cleaned in dish-washing machine 25.
Domestic bowl-washing 25 has a flushed channel 26 so that put and wash unshowned tableware to be cleaned, this flushed channel can with one when the family expenses dish-washing machine generally the door of not intending describing in detail around a horizontal rotational shaft close.In this flushed channel 26, be placed with plate-basket 27,28, be placed with unshowned tableware to be cleaned for example box, dish, cup, bowl or the like in the basket, these tablewares wash by method of the present invention by for example so-called spray arm of spray equipment 29,30 with cleaning liquid, compile the cleaning liquid that tableware to be cleaned from be placed on plate-basket, unshowned returns in the hypomere of flushed channel 26, the hypomere of this flushed channel generally is called pump jar or rhone.
According to the present invention, cleaning liquid is carried with the embodiment of a kind of gaseous conveying medium under pressure by the inventive method with carrying out pulsed at a certain time interval.This gaseous conveying medium is air in the present embodiment.The inventive method is with a kind of pumping method of beat-type, in the above-described embodiments with a kind of beat-type injection method one following, can carry the clear device of finding out 1 from Fig. 2.
In an illustrated embodiment, carry the device 1 of cleaning liquid to have a container 10, the pumped (conveying) medium of gaseous state keeps certain pressure with a compressor 2 in this container.In the flow direction of gaseous conveying medium, promptly the pressure output end 3 at this compressor has connected a pressurized tank 4 in compressor 2 back, and the pumped (conveying) medium input of gaseous state also is stored in this pressurized tank.
In the present embodiment, container 10 has a balancing gate pit 11 with pump jar 9 fluid connections.Gaseous conveying medium is by valve 5 controllably in the input pressure chamber 11.In the present embodiment, being used for controlling this valve 5 in the gaseous conveying medium input pressure chamber 11 is arranged in pressurized tank 4 and gaseous conveying medium and enters in the tube connector 21 between the inlet 20 of balancing gate pit 11.A liquid discharge tube 12 is communicated with balancing gate pit 11 and pump jar 9.In the present embodiment, liquid line 13 extends to liquid discharge tube 12 from pump jar 9 always, and this liquid discharge tube has an arm 14 that leads to balancing gate pit 11.In the present embodiment, arranging between pump jar 9 and the balancing gate pit 11 that a valve 15 is used for opening and closing the connection between pump jar 9 and the balancing gate pit 11, in the present embodiment, this valve is a check-valves that has spherical closure body, when producing once towards pump jar 9 directions mobile, this valve cuts out from pump jar 9 trickles.In the present embodiment, between balancing gate pit 11 and liquid discharge tube 12, arranged a valve 16 that is used for opening and closing liquid discharge tube 12, this valve is a check-valves with spherical closure body, producing once towards pump jar 9 or during, this valve closing liquid discharge pipe 12 towards liquid discharge tube 12 directions mobile.Balancing gate pit 11 has another inlet 18 with 17 controls of a valve, has connected a bleeder pipe 19 on this inlet.Gaseous conveying medium enters the inlet 20 of balancing gate pit 11 in the use location, promptly sees Fig. 1 and Fig. 2 by the place ahead, is arranged in the top, and the inlet of liquid line 13 is that arm 14 then is arranged in the below.In the embodiment shown, this device is between the compressor 2 of liquid discharge tube 12 and gaseous conveying medium.In the embodiment shown, a tube connector 22 is arranged in addition between liquid discharge tube 12 and pressurized tank 4.Arranged that in tube connector 22 another is used for controlling the valve 6 in the gaseous conveying medium influent discharge pipe 12.In addition, between the suction line 7 of balancing gate pit 11 and compressor 2, this device has a tube connector 23, wherein in the flow direction of gaseous conveying medium, the arm front of the suction line 7 of compressor 2 tube connector that has valve 17 23 of the inlet 20 of another valve 17 controls of 11 usefulness in the balancing gate pit has another valve 8, so that 7 pairs of atmosphere of suction line open or close.
With among the embodiment of said apparatus 1, the method for operating of the present invention of dish-washing machine 25 and wherein cleaning liquid alternately carry by gaseous conveying medium and carry out as follows with negative pressure and by the pulsed that certain hour carries out with overvoltage at interval:
During beginning, valve 5,6,8 and 16 cuts out, and valve 15 and 17 is then opened.Liquid expands to liquid level N1 in pump jar 9, and in balancing gate pit 11, because the suction that waits ubi infra of negative pressure, liquid then expands to much higher liquid level N1 '.By shut off valve 17 with open valve 5 simultaneously, the gaseous conveying medium under suction function enters balancing gate pit 11, thereby liquid is expressed to a low liquid level N2.At this moment shut off valve 15 and open valve 16, so liquid is pressed further in the liquid discharge tube 12, identical amount of liquid flows to spray arm 29,30 from liquid discharge tube 12.Approximately at the same time, along with valve 5 is opened, valve 8 also is opened, and compressor 2 is with regard to breathable gas the go forward side by side pressure of promoting the circulation of qi body and the balance of amount like this.At this moment valve 5 cuts out, another valve 6 that is used for controlling gaseous conveying medium influent discharge pipe 12 then is opened-or can at first open another valve 6 that is used for controlling gaseous conveying medium influent discharge pipe 12 by opposite order, shut off valve 5-then, so gaseous conveying medium is by in one of above-mentioned two the alternative operations influent discharge pipe 12, and apply for the second time the liquid that higher stress level has overvoltage and infeed, thereby cause the roof pressure of the liquid that is arranged in liquid discharge tube 12, liquid just flows to spray arm 29,30 again like this.Valve 16 cuts out.This moment, valve 6 and valve 8 were also closed and valve 17 is opened, thereby made the gaseous conveying medium that is positioned at balancing gate pit 11 flow to compressor 2 by bleeder pipe 19 and suction line 7, and produced negative pressure in balancing gate pit 11.Now by this negative pressure, or at valve 15 be not under the situation of check-valves by external control, open valve 15, liquid passes through the negative pressure of foundation in balancing gate pit 11 from pump jar suction pressure chambers 11 9 like this.Valve 16 is maintained in its closed position.Shut off valve 17 also reopens valve 8 simultaneously now.As long as need to carry, liquid will repeat this process.In the foregoing description of the inventive method, reopening before valve 5 makes gaseous conveying medium feed pressure chamber 11 under the pressure effect blanking time of inserting an about half second.
The time-varying process of the injection pulse that produces with said method as shown in Figure 3, this figure represents that playing cleaning liquid from the moment that valve 17 is opened is inhaled into the time course of balancing gate pit 11 and the hydraulic pressure of generation.Represent the time interval of suction in Fig. 3 with Ts, it was approximately for 1 second.In described embodiment, insert the time interval Tp of an about half second.In the present invention, by open that valve 5 has that pulsed that pulse height If is approximately 310 millibars cleaning liquid is carried and by open valve 6 additional pulse height In be approximately 90 millibars roof pressure together in the present embodiment the duration T i of half second carry.That is in the present embodiment, the ratio of the conveying duration T i of the duration in the time interval of the conveying of cleaning liquid (Ts+Tp) and cleaning liquid is approximately 3: 1.Make the cleaning performance that is added to the cleaning liquid on the tableware to be cleaned under pressure reach optimization with this very short pulse duration Ti.
In the water supply time interval of tableware to be cleaned, when each water supply began, the pressure of cleaning liquid supplied body rose, and when supplying water end, the pressure decline of cleaning liquid supplied body. at every turnPractice shows, particularly when cleaning liquid carries out the pulsed conveying, pressure by cleaning liquid this alternately rises and descends and cause alternately the rising and descending of mechanical force that affact on the tableware foul to be cleaned thus and can be under the situation of the water supply duration shorter than above-mentioned prior art, reach enough cleaning performances, alternately the rising and descend and cause alternately rising and descend and being in the very short duration, to take place of mechanical force on the foul that affacts tableware to be cleaned thus of the pressure of cleaning liquid wherein, thus very fierce.
In addition, in the above embodiment of the present invention, the pumped (conveying) medium of gaseous state flows in the flushed channel 26 of domestic bowl-washing 25 in the process that a subroutine procedure " dries up ", like this, anyway the gaseous conveying medium (air) that exists can improve during by humidity residual on drying up tableware to be cleaned dries up effect and obviously shorten the duration that subroutine procedure " dries up ".
When cleaning liquid is carried with a kind of gaseous conveying medium under pressure, need not special lift and suction condition, thereby can make the relatively simple for structure of dish-washing machine.Because carry cleaning liquid without pump, thus do not need the minimum injection rate of cleaning liquid, thereby compare with above-mentioned prior art, can reduce water consumption.Like this, the centrifugal pump that moves with the continuous electricity consumption of prior art compares, and also can use electric energy less when carrying cleaning liquid.The present invention has successfully proposed the operation method of a kind of energy-conservation, the water saving of dish-washing machine like this, and its application need not to follow special lift condition.
Claims (6)
1. the operation method of the dish-washing machine that tableware to be cleaned washes with cleaning liquid in dish-washing machine, wherein, this cleaning liquid is pressed certain hour at interval with a kind of gaseous conveying medium under pressure, carrying of pulsed, it is characterized by, this cleaning liquid is carried with a kind of beat-type ballistic method, with this beat-type ballistic method the time, cleaning liquid is applied in a pressure by gaseous conveying medium, this pressure alternately changes between two pressure stages like this, promptly when producing the low-pressure level of negative pressure, suck cleaning liquid, and by applying one when producing the elevated pressures level of overvoltage, cleaning liquid is carried in the throughput direction that requires then.
2. by the method for claim 1, it is characterized by, gaseous medium is an air.
3. by the method for claim 1, it is characterized by, gaseous conveying medium is carried with a kind of pumping method of beat-type.
4. by the method for claim 3, it is characterized by, gaseous conveying medium is pressed beat from an air storage source input cleaning liquid.
5. by the method for claim 3, it is characterized by, gaseous conveying medium is carried with a pump by certain beat work.
6. by the method for claim 1, it is characterized by, in the process that a subroutine procedure " dries up ", gaseous medium flows in the process chamber (26) of dish-washing machine (25).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10017243A DE10017243A1 (en) | 2000-04-06 | 2000-04-06 | Method for operating a dishwasher |
| DE10017243.1 | 2000-04-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1383370A CN1383370A (en) | 2002-12-04 |
| CN1148149C true CN1148149C (en) | 2004-05-05 |
Family
ID=7637866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB018016189A Expired - Fee Related CN1148149C (en) | 2000-04-06 | 2001-03-27 | Method for operating dishwashing machine |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20020083966A1 (en) |
| EP (1) | EP1296586B1 (en) |
| CN (1) | CN1148149C (en) |
| AT (1) | ATE258760T1 (en) |
| AU (1) | AU6016001A (en) |
| DE (2) | DE10017243A1 (en) |
| ES (1) | ES2215899T3 (en) |
| WO (1) | WO2001076447A2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007017283B4 (en) | 2007-04-12 | 2009-01-29 | BSH Bosch und Siemens Hausgeräte GmbH | Device for blocking a fluid passage through a tubular part by means of a check valve, in particular in a domestic appliance |
| EP2009165A1 (en) * | 2007-06-28 | 2008-12-31 | Bonferraro S.p.A. | Operating cycle for the drain pump of a household washing appliance |
| US10893790B2 (en) * | 2016-06-23 | 2021-01-19 | Illinois Tool Works Inc. | Warewasher with air assisted prescrapping |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1124528A (en) * | 1955-04-05 | 1956-10-12 | Liquid pump running on compressed gas | |
| DE1503853A1 (en) * | 1965-05-03 | 1969-05-29 | Neff Werke | Dishwasher |
| GB1338607A (en) * | 1971-06-12 | 1973-11-28 | Kingsdown Instr Co Ltd | Apparatus for dispensing a predetermined and variable volume of liquid |
| DE3018872A1 (en) * | 1980-05-16 | 1981-11-26 | BHT Hygiene-Technik GmbH, 8000 München | Cleaning system for glass chemical vessels - interrupts cleaning-liquid spray long enough for films to break on vessels |
-
2000
- 2000-04-06 DE DE10017243A patent/DE10017243A1/en not_active Withdrawn
-
2001
- 2001-03-27 AT AT01933763T patent/ATE258760T1/en not_active IP Right Cessation
- 2001-03-27 AU AU60160/01A patent/AU6016001A/en not_active Abandoned
- 2001-03-27 ES ES01933763T patent/ES2215899T3/en not_active Expired - Lifetime
- 2001-03-27 DE DE50101449T patent/DE50101449D1/en not_active Expired - Lifetime
- 2001-03-27 CN CNB018016189A patent/CN1148149C/en not_active Expired - Fee Related
- 2001-03-27 EP EP01933763A patent/EP1296586B1/en not_active Expired - Lifetime
- 2001-03-27 WO PCT/EP2001/003486 patent/WO2001076447A2/en active IP Right Grant
- 2001-12-06 US US10/008,333 patent/US20020083966A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| EP1296586A2 (en) | 2003-04-02 |
| WO2001076447A3 (en) | 2002-04-11 |
| ATE258760T1 (en) | 2004-02-15 |
| WO2001076447A2 (en) | 2001-10-18 |
| CN1383370A (en) | 2002-12-04 |
| DE10017243A1 (en) | 2001-10-11 |
| US20020083966A1 (en) | 2002-07-04 |
| AU6016001A (en) | 2001-10-23 |
| ES2215899T3 (en) | 2004-10-16 |
| DE50101449D1 (en) | 2004-03-11 |
| EP1296586B1 (en) | 2004-02-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BSH HOME APPLIANCES CO., LTD. Free format text: FORMER NAME: BOSCH-SIEMENS HAUSGERATE GMBH |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Munich, Germany Patentee after: BSH Household Electrical Appliance Co., Ltd Address before: Munich, Germany Patentee before: Bosch-Siemens Hausgerate Gmbh |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040505 Termination date: 20200327 |