CN1580369A - Heating apparatus of washing machine and control method thereof - Google Patents
Heating apparatus of washing machine and control method thereof Download PDFInfo
- Publication number
- CN1580369A CN1580369A CNA2004100035399A CN200410003539A CN1580369A CN 1580369 A CN1580369 A CN 1580369A CN A2004100035399 A CNA2004100035399 A CN A2004100035399A CN 200410003539 A CN200410003539 A CN 200410003539A CN 1580369 A CN1580369 A CN 1580369A
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- water level
- water
- steam
- steam generator
- level
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- 238000005406 washing Methods 0.000 title claims abstract description 40
- 238000010438 heat treatment Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 112
- 210000004907 gland Anatomy 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- 239000008400 supply water Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims 1
- 239000007921 spray Substances 0.000 abstract description 3
- 238000005507 spraying Methods 0.000 abstract description 3
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 239000002002 slurry Substances 0.000 description 13
- 239000006096 absorbing agent Substances 0.000 description 2
- 239000003599 detergent Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- D06F39/40—
Abstract
A heating apparatus of a washing machine comprises: a steam generator for generating steam; and a spray nozzle for spraying steam generated from the steam generator into a tub, in which a water level sensor for detecting a level of water supplied for steam generation step by step is mounted at the steam generator. According to this, an entire size of the washing machine is reduced, an amount of washing water is reduced, and a water level inside the steam generator is detected more accurately, thereby enhancing a performance of the heating apparatus.
Description
Technical field
The present invention relates to a kind of device that is used for the heating washer clothing, and more particularly, relate to a kind of by directly on clothing, spraying steam and the device and the control method thereof of heats laundry.
Background technology
Fig. 1 is the cross sectional view according to the washing machine of prior art.
Roller washing machine according to prior art comprises: the shell 102 that is used to form outward appearance; Be arranged at the wash bucket that is used to store slurry in the shell 102; Rotatably be arranged at and be used in the wash bucket 104 to wash and the cylinder 106 of the clothing that dewaters; And the drive motor 110 that is connected and is used for swing roller 106 with cylinder 106 by driving shaft 108.
The bottom of wash bucket 104 is provided with enough spaces so that heater 130 to be installed, and must be kept above the water level of certain altitude be soaked in water so that heater 130 can be washed fully in wash bucket 104.
The operation of existing roller washing machine will be described below.At first, in case the washing machine operation, slurry just is fed in the wash bucket 104.Then, if the water level of wash bucket 104 reaches designated water level, heater 130 just moves with the heated scrub water.Meanwhile, drive motor 110 is rotated in the forward or reverse rotation drives, thereby carries out washing operation.In view of the above, when the temperature of slurry reached design temperature, heater 130 just cut out.
Yet, in existing washing machine, be used to hold being used for the space of heater 130 of heats laundry and must being arranged at the bottom of wash bucket 104, so that the whole dimension of washing machine becomes big.And, because slurry also must be arranged at the position that holds heater 130, thereby will be huge for the waste of slurry.
And slurry is heated by heater 130, thereby has increased the power consumption of heater, has increased detergent amount, and has prolonged wash time.
Summary of the invention
Therefore, one object of the present invention is to provide a kind of heating unit of washing machine, by directly in clothing, spraying steam and heats laundry by the steam generator that is arranged in the washing machine, this device can and reduce the overall dimensions of washing machine, reduce the slurry amount, power consumption is reduced to minimum, and reduce wash time.
For realizing these and other advantage and according to purpose of the present invention, as implemented and illustrate broadly that at this a kind of heating unit that is used for washing machine is provided, and it comprises: the steam generator that is used to produce steam; Be used for the steam that steam generator produces is sprayed onto the nozzle of cylinder.
Steam generator has the level sensor that is used to detect into the water level that produces the water that steam supplies with step by step.
Steam generator comprises: airtight container, this container are connected with the gland steam exhauster that is used to discharge the steam that produces with the water supply pipe that is used to supply water respectively; Heater, the bottom that it is arranged at airtight container is used to heat the water that supplies in the airtight container; And be installed on and be used to detect the level sensor that supplies to the water level in the airtight container step by step in the airtight container.
Level sensor comprises: an ordinary electrode rod; The water level detecting electrode bar of a plurality of different lengths; And the support member that is used for installing ordinary electrode rod and a plurality of water level detecting electrode bars with state of insulation.
For realizing these and other advantage and according to purpose of the present invention, as implemented and illustrate broadly that at this a kind of heating means of washing machine also are provided, and it comprises: first step supplies water in the steam generator; Second step detects the water level that supplies in the steam generator and whether has reached designated water level; Third step when water level reaches designated water level in second step, produces steam by opening heater; And the 4th step, be fed in the cylinder and the cylinder internal temperature reaches design temperature in third step after, carry out washing process at the steam that steam generator produces.
Above and other objects of the present invention, characteristic, aspect and advantage will and become more obvious in conjunction with the accompanying drawings according to following detailed description of the present invention.
Description of drawings
For providing for better understanding of the present invention, accompanying drawing is incorporated into and forms the part of this specification, these description of drawings embodiments of the invention and be used from specification one and explain principle of the present invention.
In the accompanying drawings:
Fig. 1 is the cross sectional view according to the washing machine of prior art;
Fig. 2 is a perspective view, and it shows the open front surface according to washing machine of the present invention;
Fig. 3 is the partially cutaway view according to the steam generator of washing machine of the present invention;
Fig. 4 is the perspective view according to level sensor of the present invention;
Fig. 5 is the calcspar according to the heating means of the heating unit of washing machine of the present invention;
Fig. 6 is the flow chart according to the heating means of washing machine of the present invention.
The specific embodiment
Below will be at length with reference to the preferred embodiments of the present invention, its example illustrates in the accompanying drawings.
Fig. 2 is the perspective view that shows according to the open front surface of washing machine of the present invention.
Washing machine according to an embodiment of the invention comprises: the shell 10 that is used to form the outward appearance of this washing machine; Supported and be used to store the outer wash bucket 14 of slurry by the shock absorber in the shell 10 12 in the mode that absorbs vibration; Be arranged in rotatable mode and be used for interior wash bucket (cylinder) 16 that clothing is washed and dewaters in the outer wash bucket 14; And be arranged at the heating unit that clothing that shell 10 upsides are used for wash bucket 16 in being contained in sprays steam.
The detergent box 20 that is connected with water supply pipe 18 is arranged at the upside of outer wash bucket 14, thereby washing agent is supplied in the outer wash bucket 14 with slurry.
Heating unit comprises that the upside that is arranged at shell 10 is used to produce the steam generator 24 of steam, the nozzle 26 in being used for the steam that steam generator 24 produces is sprayed onto in the wash bucket 16.And circulating pump 28 is installed on the downside of shell 10, thereby this pump is used for the water of outer wash bucket 16 discharges of pumping and it is re-supplied to interior wash bucket 16 by nozzle 26.
Be used to prevent that the mixed branch units 30 of water that is circulated by circulating pump 28 pumping pressures and the vapor phase that is produced by steam generator 24 is arranged at nozzle 26 places here.
Steam generator 24 is connected with water supply pipe 32 and receives water from the outside, and is connected by steam supply pipe 34 with branch units 30.Be provided with the feed water valve 40 that is used for opening and closing water supply pipe 32 in water supply pipe 32 1 sides here.Circulating pump 28 is connected with the drainpipe 36 that is used for discharging the slurry that is stored in outer wash bucket 14, and is connected by circulation pipe 38 with branch units 30.
And, wash bucket 16 in the temperature sensor 42 of wash bucket 16 internal temperatures is installed in detecting when being used in sprinkling system enters by nozzle 26 wash bucket 16.
Fig. 3 cuts open perspective view according to the part of the steam generator of washing machine of the present invention.
Steam generator 24 comprises: airtight container 50, this container are connected with gland steam exhauster 34 with water supply pipe 32 respectively; Heater 52, its bottom that is arranged at airtight container 50 are used to heat the water that supplies in the airtight container 50; And level sensor 54, it is installed on and is used for detecting the water level that supplies to airtight container 50 step by step in the airtight container.
The upper container 56 of airtight container 50 and bottom container 58 hermetically with certain space be installed on wherein.The feed water inlet 60 that is connected with water supply pipe 32 is formed at a side of upper container 56, and the steam drain 62 that is used for discharging airtight container 50 steam that produces that is connected with gland steam exhauster 34 is formed at bottom container 58.
As shown in Figure 4, level sensor 54 comprises: an ordinary electrode rod 70; The water level detecting electrode bar 72 and 74 of a plurality of different lengths; And be arranged at airtight container 50 hermetically and be used for installing the support member 76 of ordinary electrode rod 70 and a plurality of water level detecting electrode bar 72 and 74 with a kind of state of insulation.
In ordinary electrode rod 70 and a plurality of water level detecting electrode bar 72 and 74, ordinary electrode rod 70 is the longest.And water level detecting electrode bar 72 and 74 has length differing from each other, with sensed water level step by step.Under this state, if ordinary electrode rod 70 contacts with water with 74 with a water level detecting electrode bar 72, then in ordinary electrode excellent 70 and the water level detecting electrode bar electrically is connected and produces voltage.At this moment, water level detecting electrode bar 72 and 74 voltages that produced are differing from each other, thereby by the voltage difference sensed water level.
Water level detecting electrode bar 72 and 74 by first electrode 72 that is used for detecting the lowest water level L1 that supplies to airtight container 50 and second electrode 74 that is used to detect peak level L2 form.
The water level detecting electrode bar is not limited to first electrode 72 and second electrode 74, and can comprise that a plurality of electrodes are to detect mid water levels.
Here, first electrode 72 has a length that is used to detect lowest water level L1, and under this water level, heater 52 can be immersed in the water.And second electrode 74 has one and is used to keep airtight container 50 inside can produce the length-specific of the minimum space of steam.
Support member 76 is formed by the material that is used to insulate with sealing state, and is installed in upper container 56 hermetically.Ordinary electrode rod 70 and a plurality of water level detecting electrode bar 72 and 74 vertically are installed on support member 76 with state of insulation.
The operation of level sensor 54 will be described below.
Under DC voltage was fed into state between ordinary electrode rod 70 and first and second electrode bars 72 and 74, in the time of in water supplies to airtight container 50, water at first contacted with the longest ordinary electrode rod 70.Then, along with the supply gradually of water, when first electrode bar 72 contacted with water, ordinary electrode rod 70 electrically was connected each other with first electrode bar 72 and produces a low-voltage, thereby detects lowest water level L1.And along with further supplying in the airtight container 50 of water, when second electrode bar 74 contacted with water, ordinary electrode rod 70 electrically was connected each other with second electrode bar 74 and produces high voltage, thereby detects peak level L2.
Fig. 5 is a calcspar, and it shows the heating means according to the heating unit of washing machine of the present invention.As shown in the figure, heating unit comprise be installed in wash bucket one side be used to detect in the temperature sensor 42 of laundry barrel temperature, be installed on the level sensor 24 that is used for detecting the water level that supplies to steam generator 24 step by step in the steam generator 24, and according to from the signal controlling feed water valve 40 of temperature sensor 42 and level sensor 54 and the controller 80 of heater 52.
Heating unit with the Steam Heating clothing can not only be applied to also can be applied to any washing machine as the described roller washing machine of preferred embodiment.
Operation according to the heating unit of washing machine of the present invention below will be described.
Fig. 6 is a flow chart, shows the heating means according to washing machine of the present invention.
At first, in the wash bucket 16, then drive signal, thereby slurry is supplied in the outer wash bucket 14 in clothing is placed into for washing machine adds one.Then, after the user had imported the clothing heating mode, controller 80 was opened feed water valve (S10).
In view of the above, water supplies to steam generator 24 (S20) by water supply pipe 32.
Then, judge whether the water level that supplies to steam generator 24 has reached first designated water level (T1) (S3).That is to say that when water supplies to the airtight container 50 of steam generator 24 and second electrode bar 74 of level sensor 54 when contacting with water, ordinary electrode rod 70 electrically is connected each other by water with second electrode bar 74 and produces voltage.The voltage that is produced is detected by controller 80, thereby and judges water level.
In described step, reached the first designated water level T1 if judge water level, supplying water stops and heater 52 is opened (S40 and S50).That is to say that controller 80 cuts out feed water valve 40 and stops to supply water and power supply being applied to heater 52.
In view of the above, the water that supplies to airtight container 50 is heated by heater 52 and produces steam, and the steam that produces in the closed container 50 supplied to by steam supply pipe 34 in wash bucket 16 and heats laundry.
Then, judge whether the water level in the airtight container 50 is lower than the second designated water level T2 (S60).That is to say, judge whether the water level in the airtight container 50 is lower than the lowest water level that first electrode bar 72 does not contact with water.
In described step, be lower than the second designated water level T2 if judge water level, heater cuts out (S70).Then, judge whether interior wash bucket 16 temperature inside have reached design temperature (S80).That is to say that controller 80 will be compared with interior wash bucket 16 internal temperatures that temperature sensor 42 obtains by the design temperature that the user selectes.
In described step,, just carry out washing operation if the internal temperature of wash bucket 16 is higher than design temperature in judging.On the contrary, if the internal temperature of wash bucket 16 is lower than design temperature in judging, just supplies water in the airtight container 50 and repeat above-mentioned steps and the inside wash bucket 16 inner steam that spray.
In heating unit according to washing machine of the present invention, be provided with steam generator and clothing is sprayed to the sprinkling Steam Heating in the wash bucket, thereby reduced the overall dimensions of washing machine, reduce the slurry amount, the electric energy that consumes is reduced to minimum, and shortened wash time.
And the level sensor that is used for detecting the water level that supplies to steam generator is made up of a plurality of electrode bars, thereby detects the water level of steam generator inside more accurately, thereby improves the performance of heating unit.
Although the present invention can be not deviate from the multi-form enforcement of its spirit or inner characteristic, also be to be understood that, unless otherwise indicated, the foregoing description is not limited to the details of any above-mentioned explanation, and more should in defined its spirit and scope by claims, be explained widely, and therefore, all fall into meeting of claim and limit or these meet and the change of the equivalent that limits and modification thereby will be contained in claims.
Claims (12)
1. the heating unit of a washing machine, it comprises:
Be used to produce the steam generator of steam; With
Be used for the steam that steam generator produces is sprayed onto the nozzle of wash bucket,
The level sensor that wherein is used for detecting for the water level that produces the water that steam supplies with step by step is installed on steam generator.
2. according to the device of claim 1, it is characterized in that steam generator comprises:
Airtight container, this container are connected with the gland steam exhauster that is used to discharge the steam that produces with the water supply pipe that is used to supply water respectively;
Heater, it is arranged at sealing container bottom, is used for heating the water that supplies to airtight container; With
Level sensor, it is installed in the airtight container, is used for detecting the water level that supplies to airtight container step by step.
3. according to the device of claim 2, it is characterized in that level sensor comprises:
An ordinary electrode rod;
The water level detecting electrode bar of a plurality of different lengths; With
Support member, it is used for state of insulation ordinary electrode rod and a plurality of water level detecting electrode bars being installed.
4. according to the device of claim 3, it is characterized in that the water level detecting electrode bar comprises:
Be used to detect first electrode of lowest water level; With
Be used to detect second electrode of peak level.
5. according to the device of claim 4, it is characterized in that first electrode bar has the length that detection supplies to the water level in the airtight container, heater can be immersed in the water under this water level.
6. according to the device of claim 4, it is characterized in that second electrode has the length that is used for sensed water level, under this water level, have a space, produce steam to add hot water by heater on the top of airtight container.
7. the heating means of a washing machine comprise:
First step supplies water to steam generator;
Second step detects the water level that supplies in the steam generator and whether has reached designated water level;
Third step when water level has reached designated water level in second step, is opened heater, thereby produces steam; With
The 4th step, the steam that produces when steam generator supplied in the wash bucket and thereby wash bucket internal temperature when in third step, having reached predetermined temperature, carry out washing operation.
8. according to the method for claim 7, it is characterized in that designated water level is the peak level that supplies in the steam generator.
9. method according to Claim 8 is characterized in that, when second electrode bar of level sensor contacted with water in second step, the voltage between the ordinary electrode rod and second electrode bar was applied to controller.
10. according to the method for claim 7, it is characterized in that, close the step of heater when the water level that also is included in steam generator inside is lower than lowest water level.
11., it is characterized in that lowest water level is first electrode bar of the level sensor water level when contacting with water according to the method for claim 10.
12., it is characterized in that design temperature is the wash bucket internal temperature of being selected by the user according to the method for claim 7.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR56267/2003 | 2003-08-13 | ||
| KR10-2003-0056267A KR100500887B1 (en) | 2003-08-13 | 2003-08-13 | Apparatus for generating steam in Drum-type washing machine and method of the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1580369A true CN1580369A (en) | 2005-02-16 |
| CN100387769C CN100387769C (en) | 2008-05-14 |
Family
ID=33563047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100035399A Expired - Lifetime CN100387769C (en) | 2003-08-13 | 2004-01-29 | Heating apparatus of washing machine and control method thereof |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20050034250A1 (en) |
| EP (1) | EP1507031B1 (en) |
| KR (1) | KR100500887B1 (en) |
| CN (1) | CN100387769C (en) |
| DE (1) | DE602004022113D1 (en) |
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| CN104846611A (en) * | 2015-05-21 | 2015-08-19 | 无锡小天鹅股份有限公司 | Clothes treating equipment |
| WO2017121393A1 (en) * | 2016-01-14 | 2017-07-20 | 青岛海尔滚筒洗衣机有限公司 | Method for washing clothes using steam, and washing machine |
| CN106968080A (en) * | 2016-01-14 | 2017-07-21 | 青岛海尔滚筒洗衣机有限公司 | A kind of method that clothes washing is carried out using steam |
| US10544535B2 (en) | 2016-01-14 | 2020-01-28 | Qingdao Haier Drum Washing Machine Co., Ltd. | Washing method using steam, and washing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| DE602004022113D1 (en) | 2009-09-03 |
| EP1507031A1 (en) | 2005-02-16 |
| EP1507031B1 (en) | 2009-07-22 |
| US20050034250A1 (en) | 2005-02-17 |
| KR20050017489A (en) | 2005-02-22 |
| KR100500887B1 (en) | 2005-07-14 |
| CN100387769C (en) | 2008-05-14 |
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