CN101096815A

CN101096815A - Steam generating device and washing machine having the same

Info

Publication number: CN101096815A
Application number: CNA2007101096887A
Authority: CN
Inventors: 安仁根; 李圭原; 文盛一
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2006-06-27
Filing date: 2007-06-27
Publication date: 2008-01-02
Also published as: KR20080000333A; KR101265599B1

Abstract

A steam generating device (50) and a washing machine having the same are disclosed. The steam generating device (50) includes a case (80) for containing water, the case (80) receiving a heater, a water level sensor (60) for sensing a water level of the case, and a receptacle extending downwardly from a top of the case (80) while enclosing the water level sensor (60), to prevent the water level sensor from malfunctioning, the receptacle having an open bottom directly communicating with an interior of the case (80), to prevent foreign matter from being accumulated in the receptacle. The structure of the receptacle covering the water level sensor (60) is improved. Accordingly, it is possible to reduce the accumulation of foreign matter in the receptacle, and thus to prevent the water level sensor (60) from malfunctioning.

Description

Steam raising plant and washing machine with steam raising plant

This application requires in the korean patent application No.10-2006-0058056 of submission on June 27th, 2006 and the priority of 10-2006-0058058, and they are here all quoted as a reference.

Technical field

The washing machine that the present invention relates to a kind of steam raising plant and have this steam raising plant, more particularly, the present invention relates to a kind of steam raising plant, the recipient that wherein is used to cover level sensor has the structure of improvement, this structure can reduce the accumulation of impurity in the recipient, thereby prevent that level sensor from breaking down, the invention still further relates to a kind of washing machine with this steam raising plant.

Background technology

Usually, washing machine is categorized as pulsation type and cylinder type, in the pulsation type, utilization is carried out washing operation along with the current that rotation produced of pulsator, in cylinder type, utilize the drop of the washings of the cylinder that the level of pouring into installs and clothing and the frictional force that during the cylinder rotation, between cylinder and clothing, produced and carry out washing operation.

Recently, the washing machine with the function that can utilize the steaming clothing particularly roller washing machine be suggested.When in washing operation, utilizing steam, as washing machine in, can reduce power and water consumption, realize scourability enhancing, remove the gentle flavor of de-shirred and prevent to produce static.

With reference to Fig. 7 the general roller washing machine that utilizes steam is described below.

Roller washing machine comprises: the cabinet 10 that forms the washing machine appearance; Cylinder barrel 20 in cabinet 10 inside by cabinet 10 horizontal supports is to store washings; Be rotatably installed in the cylinder 30 in the bucket 20; And the CD-ROM drive motor (not shown) that is used for head roll 30.

Import 13 is formed on the place, front side of cabinet 10.The internal communication of import 13 and cylinder 30 makes clothing to put into cylinder 30 or therefrom taking-up by import 13.Door 11 is installed in the import 13, to open or close import 13.

Feed water valve 15 is arranged on a side place of roller washing machine.Feed water valve 15 connects the outer water tube (not shown) respectively, so that supply water is given bucket 20.Feed water valve 15 is connected detergent box 27 by hot-water line 25a with cold water pipe 26 respectively.

Roller washing machine also comprises and is used to supply the steam raising plant 50 that steam is given cylinder 30.Water supply pipe 25 and steam pipe 53 are connected on the steam raising plant 50.Water supply pipe 25 supply water are given steam raising plant 50, and steam pipe 53 is supplied to cylinder 30 to the steam that produces from steam raising plant 50.

Structure with reference to Fig. 8 and 9 more detailed description steam raising plants 50.

Steam raising plant 50 comprises housing 80.Housing 80 comprises the upper casing 82 that the lower casing 81 of the appearance that forms steam raising plant 50 is connected with upper end with lower casing 81.In lower casing 81, be defined for the space that stores water.Steam raising plant 50 also comprises the heater 55 of the water that is used for heated shell 80 storages.

Feed water inlet 52b is formed on a side place of shell 82.Feed water inlet 52b connects water supply pipe 25, so that water is incorporated into the steam raising plant 50 from water supply pipe 25.Steam drain 52a is formed on the opposite side place of shell 82.Steam drain 52a connects steam pipe 53, to give tube 20 from steam pipe 53 supply steam.

Level sensor 60 and temperature sensor 57 are installed in a side place of upper casing 82.Level sensor 60 detects the water level that is stored in the water in the steam raising plant 50.Temperature sensor 57 is measured the temperature of the water that is heated by heater 55 and along with the temperature that adds the steam that hot water produces.

Level sensor 60 comprises the recipient shell 61 that forms level sensor 60 appearances.Recipient shell 61 is fixedly secured on the steam raising plant 50.Thereby level sensor 60 also comprises the electrode that is arranged in downward extension in the recipient shell 61, is stored in the water level of the water in the steam raising plant 50 with detection.

Electrode comprises at least: its function is the common electrode 62 that is used for sensed water level as reference electrode; Be used to detect the low water level electrode 63 of low water level; Be used to detect the high water level electrode 64 of high water level.

When water boil, bubble may produce suddenly, and may be attached to

electrode

62,63 and 64.In this case,

electrode

62,63 and 64 may break down.In addition, be difficult to prevent fully generation of vibration in the operating period of washing machine.For this reason, the operating period of washing machine steam raising plant 50 also may vibrate, thereby the water that is stored in the steam raising plant 50 may roll.

In order to prevent that level sensor 60 because of above-mentioned factor breaks down, is provided with recipient 70.Recipient 70 is configured to surround

electrode

62,63 and 64.Recipient 70 also has opening 70s.

As shown in Figure 9, recipient 70 comprises: from the upper casing 82 downward last recipients 71 that extend, with the top of protection level sensor 70; With from the upwardly extending recipients 73 down of lower casing 81, with the bottom of protection level sensor 70.Each

recipient

71 and 73 has chamber structure.

Above-mentioned traditional steam raising plant and be equipped with the washing machine of this steam raising plant to have following problem.

When steam raising plant 50 operations, the water that is stored in the steam raising plant 50 is heated, thereby produces steam.During heating operation, the impurity of for example lime that comprises in the water is accumulated in the housing 80.

Especially, as shown in figure 11, be introduced in the impurity that comprises in the water in the recipient 70 of level sensor 60 and may be accumulated in the recipient 70.

Typically, impurity begins up to be accumulated in the recipient 70 gradually from the bottom of following recipient 73.For this reason, the moisture that is comprised in the impurity of accumulation may be electrically connected low water level electrode 63 and common electrode 62.Therefore, do not have in steam raising plant 50 under the state of water, level sensor 60 may break down.

In this case and since level sensor 60 detect mistakenly in steam raising plant 50, water is arranged and no matter fact of case be not have water in the steam raising plant 50, heater 55 continuous services, thereby over-heating.Therefore, there is a problem to be that the fuse of heater 55 may damage.

Summary of the invention

Therefore, the washing machine that the present invention is directed to a kind of steam raising plant and have this steam raising plant, they have roughly been eliminated because one or more problems that limitation and shortcoming produced of prior art.

The washing machine that the purpose of this invention is to provide a kind of steam raising plant and have this steam raising plant, in this steam raising plant, the recipient that is used for covering level sensor has the structure-improved of the accumulation that can reduce recipient impurity, prevents that thus level sensor from breaking down.

Additional advantage of the present invention, purpose and feature will partly be discussed in the following description, and will partly will be apparent when checking hereinafter for those of ordinary skills, perhaps acquistion from the practice of the present invention.The objectives and other advantages of the present invention can realize by the structure that particularly points out in the specification of writing and its claim and accompanying drawing and obtain.

For realizing these purposes with other advantage and according to the intent of the present invention, as enforcement and broadly described herein, a kind of steam raising plant comprises: be used to comprise the housing of water, this housing receives heater; Be used to detect the level sensor of the water level of housing; And recipient, this recipient extends downwards from the top of housing when surrounding level sensor, breaks down to prevent the water level sensor, and this recipient has the open bottom that directly is communicated with the inside of housing, is accumulated in the recipient to prevent impurity.

Recipient can be by the entire portion of open bottom and the internal communication of housing.

Recipient may extend into the position approaching with the bottom of housing.

Recipient can comprise the opening that is used to allow to introduce towards level sensor water.

Preferably, opening is formed on the place, bottom of recipient.

More preferably, opening is formed on the side wall portion office of recipient.

Steam raising plant can further comprise the following barrier wall of extending from the bottom of housing downwards.

Recipient can comprise with first barrier wall of the adjacent layout of heater and be arranged to and isolated second barrier wall of first barrier wall.

Second barrier wall can be arranged in first barrier wall below.

Can arrange that second barrier wall makes that the lower end of the upper end of second barrier wall and first barrier wall is overlapping.

Preferably, first barrier wall has plate shape.

Preferably, level sensor be arranged to misalignment second barrier wall mid portion and towards a side of second barrier wall.

More preferably, recipient comprises the opening that the opposing sidewalls that is respectively formed at recipient is partly located, to allow introducing water towards level sensor.

In another aspect of the present invention, washing machine comprises; Body; Be installed in the bucket in this body; Be rotatably installed in the cylinder in the bucket; Supply the steam raising plant that steam is given cylinder with being used to, this steam raising plant comprises: be used to comprise the housing of water, this housing receives heater; Be used to detect the level sensor of the water level of housing; And recipient, this recipient extends downwards from the top of housing when surrounding level sensor, breaks down to prevent the water level sensor, and this recipient has the open bottom that directly is communicated with the inside of housing, is accumulated in the recipient to prevent impurity.

In washing machine, recipient can extend to the position approaching with the bottom of described housing in the internal communication of entire portion by described open bottom and described housing.

Preferably, opening comprises the opening of the side wall portion office of the bottom that is respectively formed at recipient and recipient.

Second barrier wall can be arranged in first barrier wall below.

Preferably, arrange that second barrier wall makes that the lower end of the upper end of second barrier wall and first barrier wall is overlapping.

Should be understood that aforementioned general description of the present invention and following detailed description all are exemplary with indicative, and be intended to provide further explanation as invention required for protection.

Description of drawings

Comprise with thinking and the invention provides further understanding and be merged in and the accompanying drawing that constitutes this application part illustrates 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 vertical sectional view that illustrates according to washing machine of the present invention;

Fig. 2 is the perspective view that illustrates according to steam raising plant of the present invention;

Fig. 3 illustrates the perspective view that dissects corresponding to the part of Fig. 2;

Fig. 4 is the perspective view that illustrates according to the recipient of steam raising plant of the present invention;

Fig. 5 is the perspective view that recipient according to another embodiment of the invention is shown;

Fig. 6 is the cross-sectional view strength that recipient according to another embodiment of the invention is shown;

Fig. 7 is the perspective view that traditional roller washing machine is shown;

Fig. 8 is the perspective view that traditional steam raising plant is shown;

Fig. 9 illustrates the perspective view that the part of steam raising plant is as shown in Figure 8 dissectd;

Figure 10 is the perspective view that traditional recipient is shown; And

Figure 11 is the cross-sectional view strength that the impurity accumulation in the recipient of Figure 10 is shown.

The specific embodiment

With reference to the accompanying drawing that embodiments of the invention are shown the present invention is described more fully below.Under possible situation, identical Reference numeral is indicated same or analogous part in whole accompanying drawing, and does not provide being repeated in this description of these parts.

Fig. 1 is the vertical sectional view that illustrates according to washing machine of the present invention.Fig. 2 is the perspective view that illustrates according to steam raising plant of the present invention.Fig. 3 illustrates the perspective view that dissects corresponding to the part of Fig. 2.

As shown in Figures 1 to 3, washing machine of the present invention mainly comprises body 110, bucket 120, cylinder 130, steam supply, temperature sensor 150, circulating pump 160, circulation canal 170 and the level sensor 250 that is used for detecting bucket 120 washings water levels.To provide following description in conjunction with the embodiment of drum-type washing machine.

Body 110 forms the appearance of roller washing machine.Import 111 is formed on the place, front side of body 110.

Door 140 is installed in the zone of the import 111 that is formed with body 110, to open or close import 111.Liner 112 be engaged in import 111 inner peripheral around so that between door 140 and import 111, provide sealing.

Washings supply pipe 113 is arranged on the body 110, to give bucket 120 supplying washing water.Detergent box 114 is arranged in the flow passage of washings supply pipe 113.

Bucket 120 is arranged in the body 110 and is supported by body 110 simultaneously.The drainage channel 121 that is used to discharge washings is connected to the bottom of bucket 120.Washings heater 122 is arranged in the bottom of bucket 120, is supplied to the washings of bucket 120 with heating.

Cylinder 130 is installed in the bucket 120 rotatably.Cylinder 130 has the opening of the import 111 of pointing to body 110.

The perisporium that passes cylinder 130 forms a plurality of holes, to allow the being supplied to washings and the steam of bucket 120 to be introduced in the cylinder 130.

Steam supply be configured to a certain amount of steam be fed to the bucket 120 and cylinder 130 in one or two.One or more steam supplies with said structure can be set.

Circulating pump 160 is arranged in the drainage channel 121 that connects bucket 120.Circulating pump 160 operation is supplied to the washings of bucket 120 with pumping, and circulation cleaning water thus.

Circulation canal 170 connects circulating pumps 160, and with the flow channel that acts on the circulation that guides the washings that are recycled pump 160 pumpings.

Preferably, circulation canal 170 extends through liner 112, so that an end of the discharging washings of circulation canal 170 points to the inside of cylinder 130.As shown in Figure 1, circulation canal 170 can be connected to steam supply line 220.Perhaps, circulation canal 170 can connect the inside of cylinder 130, and separates with steam supply pipe 220.

Simultaneously, temperature sensor 15 is arranged in the specific location in the bucket 120, to detect the internal temperature of bucket 120.The temperature that temperature sensor 150 is detected can be used for controlling the operation of the steam supply that will describe and the operation of washings heater 122.

In the accompanying drawings, Reference numeral " 180 " indication feed water valve assembly, this feed water valve assembly is used for optionally the washings that receive from the washing machine outside being supplied to detergent box 114 or being supplied to steam supply.The feed water valve assembly comprises that being used to control washings is supplied to the washings supply valve 181 of bucket 120 and is used to control the feed water valve 182 relevant with steam that water is supplied to steam supply by detergent box 114.

Steam raising plant comprises: steam generator 200, this steam generator 200 are used for supplying high temperature heat and also produce steam thus with boil water, and the steam that produces is supplied to bucket 120 and/or cylinder 130; Steam supply pipe 220, from the vapor stream of steam generator 200 through this SS 220; And spray nozzle 221, this spray nozzle 221 is used for steam jet with the steam supply pipe 220 of flowing through to bucket 120 and/or cylinder 130.

Spray nozzle 221 has the nozzle arrangements of uperize effectively.Liner 112 extensions are passed at the tip of the appearance steam of spray nozzle 221, make this tip point to the inside of cylinder 130.

As Fig. 2 relevant with one embodiment of the present of invention and shown in Figure 3, steam generator 200 comprises: the housing 210 that is made of upper casing 211 and lower casing 213; Steam heater 230; Steam side temperature sensor 240; Level sensor 250; And recipient 300.

Housing 210 can have the rectangular box structure, and this rectangular box structure forms the appearance of steam generator 210, and limits the steam generation space.

The feed water inlet (not shown) is formed on a side place of housing 210.This feed water inlet connects feed water valve 182, so that water is incorporated into the housing 210 from feed water valve 182.Steam drain 201 is formed on the opposite side place of housing 210.Steam drain 201 connects steam supply pipe 220, so that steam is supplied to cylinder 130 from steam supply pipe 220.

Steam heater 230 is arranged in the housing 210.Steam heater 230 produces heat, is incorporated into water in the housing 210 with heating, produces steam thus.

For steam heater 230, can use sheathed heater.Although do not illustrate, fuse is installed in the steam heater 230, is used for cutting off the electricity supply when steam heater 230 is overheated, protects steam heater 230 and steam generator 200 thus.

Steam side temperature sensor 240 is arranged in the housing 210, and is electrically connected to the controller (not shown) that is included in the washing machine.Steam side temperature sensor 240 is used for detecting the internal temperature of housing 210 when steam heater 230 generations are hot.

Level sensor 250 also is arranged in the housing 210, is supplied to the water level of the water of housing 210 with detection.Level sensor 250 comprises the recipient shell 251 of the appearance that forms level sensor 250.Recipient shell 251 is fixedly secured on the steam generator 200.Level sensor 250 also comprises three electrodes, i.e. common electrode 252, low water level electrode 253 and high water level electrode 254.

Level sensor 250 is electrically connected to the controller (not shown) of washing machine, the overall operation of the element that comprises feed water valve assembly 180, steam heater 213 etc. of this controller control washing machine.

Arrange that common electrode 252 and low water level electrode 253 make its terminal be positioned at and the required corresponding horizontal plane place of lowest water level of generation steam.High water level electrode 254 has the short length of length of compare common electrode 282 and low water level electrode 253, makes the terminal of high water level electrode 254 be positioned at and the required corresponding horizontal plane place of maximum stage of generation steam.

Preferably, the horizontal plane that terminal was positioned at of low water level electrode 253 and common electrode 252 is arranged at and causes the underwater water level of steam heater 230 complete submergences.

According to a preferred embodiment of the invention, recipient 300 is used to protect level sensor 250 to avoid being supplied to the bubble and the water of steam generator 200, prevents that thus level sensor 250 from breaking down.

For example, when water boil, bubble may produce suddenly, and may be attached to electrode 252,253 and 254.In this case, level sensor 250 may break down.When the water by the feed water inlet supply splashed, level sensor 250 may break down.

In addition, be difficult to prevent fully generation of vibration in the operating period of washing machine.For this reason, the operating period of washing machine steam generator 200 also may vibrate, thereby the water that is stored in the steam generator 200 may roll.In order to prevent that level sensor 250 because of above-mentioned factor breaks down, is provided with recipient 300.

According to the embodiment shown in Fig. 2 to 4 of the present invention, recipient 300 extends downwards from the top of housing 210 when surrounding level sensor 250.Opening 350 is formed on the lower end of recipient 300, is introduced in the recipient 300 to allow water.

According to this structure of recipient 300, can protect level sensor 250 to avoid bubble etc., and the accumulation of impurity in the recipient 300 is minimized.

In detail, recipient 300 comprises first barrier wall 310 and second barrier wall 330, this first barrier wall 310 is arranged near the steam heater 230, longitudinal direction along level sensor 250 extends simultaneously, this second barrier wall 330 and first barrier wall 310 are opposed, simultaneously with first barrier wall, 310 spaced apart certain distances.

Preferably, first and

second barrier wall

310 and 330 tops from housing 210 extend downward the position near the bottom of housing 210.Preferably, opening 350 is respectively formed at the lower end of first and

second barrier wall

310 and 330, so that allow water to be introduced in the recipient 300.

Side wall portion office in each

barrier wall

310 or 330 also can form another opening 350.

Because recipient 300 is configured to extend to from the top of housing 210 bottom of housing 210, the amount that is accumulated in the impurity in the recipient 300 is considerably less.Therefore, can prevent that the electrode of level sensor 320 is electrically connected impurity, thereby prevent that level sensor 320 from breaking down.

The considerably less reason of amount that is accumulated in the impurity in the recipient 300 is: the bottom of recipient 300 the whole bottom of recipient 300 (preferred) opens wide, and makes its directly and internal communication of housing 210.

Although as under conventional cases, impurity begins typically upwards to be accumulated in the recipient from the bottom of recipient, but do not interfere the current that are introduced in the recipient 300 or discharge owing to have the recipient 300 of the open bottom that directly is communicated with housing 210 from recipient 300, impurity is difficult to be accumulated in the recipient 300 of the present invention.

Therefore, the amount that is accumulated in the impurity in the recipient 300 is considerably less, thereby can prevent that level sensor 250 is owing to impurity breaks down.

According to another embodiment of the invention; as shown in Figure 5, recipient 300 can comprise the last recipient 310 on the top that is used to protect level sensor 250 ' and be arranged in recipient 310 ' the below be used to protect the following barrier wall 330 of the bottom of level sensor 250 '.

Similar to the above embodiments, last recipient 310 ' preferably include first barrier wall 311 and second barrier wall 313.In this case, first barrier wall 211 be arranged in steam heater 230 near.

Preferably, following barrier wall 330 ' the be arranged in below (promptly being arranged in position) of first barrier wall, 311 bottoms near steam heater 230.According to the present invention, cloth deposit barrier wall 330 ' make down barrier wall 330 ' the top and the bottom of first barrier wall 311 overlapping.

Simultaneously, second barrier wall 313 roughly has " ㄈ " shape.In addition, first barrier wall 311 has and second barrier wall, 313 corresponding shape.Therefore, first and second barrier wall 311 and 313 form to go up recipient 310 ', last recipient 310 ' have chamber shape.Preferably, following barrier wall 330 ' have plate shape.

Since be accumulated in the last recipient 310 that is suitable for protecting level sensor 250 tops ' in impurity amount seldom, last recipient 310 ' form has chamber shape, so that mainly protect the top of level sensor 250.On the other hand, if following barrier wall 330 ' have chamber shape, then be accumulated in down barrier wall 330 ' in the amount of impurity may be very big.For this reason, following barrier wall 330 ' form has plate shape, so that more positively prevent the accumulation of impurity and prevent that bubble from moving to the bottom of level sensor 320.

Preferably, last recipient 310 ' have opening 350 is so that allow water to enter level sensor 250.Opening 350 can be formed on recipient 310 ' bottom place, maybe can be formed on recipient 310 ' the side-walls of opposing sidewalls in partly.But, preferably go up recipient 310 ' have respectively last recipient 310 ' the place, bottom and last recipient 310 ' opposing sidewalls partly locate the opening 350 that forms so that realization easily water is incorporated into recipient 310 ' in.

Simultaneously, although small amount of impurities is accumulated in and does not have chamber shape but have the following barrier wall 330 of plate shape ', compare with traditional situation on every side, when using steam raising plant for a long time, the cumulant of impurity is increased to a certain degree.

In this case, be arranged in following barrier wall 300 ' opposite side between following barrier wall 300 ' mid portion around, the cumulant of impurity is big, and around the zone of a large amount of current warps, the cumulant of impurity is few.For this reason, when level sensor 250 be installed in down barrier wall 330 ' mid portion near the time, the electrode of level sensor 250 can by be accumulated in down in a large number barrier wall 330 ' mid portion around impurity be electrically connected.In this case, level sensor 250 may break down.

Therefore, preferably install level sensor 250 make barrier wall 330 under its misalignment ' mid portion, and be not installed in down barrier wall 330 ' mid portion near.

Certainly, as shown in Figure 5, following barrier wall 330 ' can be from extending with a side of the isolated level sensor 250 of the mid portion of level sensor 250.

When the bottom of recipient 300 does not have chamber structure but has the barrier wall structure, different with traditional situation, can reduce the accumulation of impurity considerably.

And, when install level sensor 250 make barrier wall 330 under its misalignment ' mid portion, or when extending, as mentioned above, can prevent that electrode is electrically connected with the impurity of accumulation with a side of the isolated level sensor 250 of the mid portion of level sensor 250.

Hereinafter, description is had the steam raising plant of above-mentioned structure operation, have steam raising plant roller washing machine operation and according to the effect of these operations.

When being supplied to the laundry drum electro-mechanical force, the washings supply valve 181 of the controller (not shown) control feed water valve assembly 180 that is comprised in the roller washing machine makes washings be supplied to bucket 120, and the water level of the washings of feasible supply reaches predetermined water level.The controller drives circulating pump 160 then, so that make the washings that exist in the bucket 120 be recycled to the top of cylinder 130 by the water route that limits outside bucket 120.Also index drum 130 rotations of controller are soaked operation so that carry out clothing.

Controller is also controlled the feed water valve 182 relevant with steam of feed water valve assembly 180, to supply the housing 210 of a certain amount of water to steam generator 200.

When water was supplied to housing 210, the opening 350 of the bottom of the water of supply by being formed on recipient 300 and relative side wall portion office was introduced in the recipient 300.At this moment, level sensor 250 detects the water level that is introduced in the water in the recipient 300.

Simultaneously, the water that is introduced in the housing 210 is heated by steam device 230 heating, makes water be converted to steam.During this process, recipient 300 prevents the electrode of splash water or the bubble direct contact water level sensor 250 that are produced along with the water heating operation.

The steam that produces in the housing 210 is discharged in the cylinder 130 that comprises clothing after steam supply pipe 220 guiding that are connected to housing 210 and cylinder 130.Therefore, steam is supplied to the clothing that is comprised in the cylinder 130.

When repeating said process, steam generator 200 continues supply steam and gives cylinder 130.

Simultaneously, in the operating period of steam generator 200, be introduced in the impurity that is comprised in the water of recipient 300 and accumulated.According to the present invention, as described, the accumulation of the impurity in the recipient 300 is minimized, and prevent that thus level sensor 250 is owing to impurity breaks down, because recipient 300 extend from upper shell 210, make its internal communication direct and box 200 downwards when bottom place has opening 350.

And, owing to soaking the operating period high-temperature steam and be ejected into fast in the cylinder, the atmosphere of cylinder 130 inside can be maintained temperature to desired scourability optimum by steam generator 210 according to the present invention along with supplying clothing that water carries out to the operation of bucket 120, swing roller and circulating pump 160 again.

Reach target temperature up to temperature sensor 150 detected temperature, just carry out the clothing of carrying out by steam generator 200 and soak process and steam supply process.When the temperature that detects when temperature sensor 150 reached target temperature, the steam supply by steam generator 200 was stopped.Simultaneously, washings supply valve 181 is controlled to supply water and reaches predetermined water level for the water level of the water of bucket 120 in bucket 120.After this, cylinder 130 rotates around clockwise and counter clockwise direction, and washs according to the program execution back of setting.

Can be washed at washings and carry out the back washing under the condition that water heater 122 is heated to predetermined temperature.And, can circulating pump 160 at the fixed time interval operation carry out to quicken washing under with the condition of circulation cleaning water.

After finishing, after the washing, carry out circulation desired or that select, such as rinsing and spin-dry circulation according to the general process order.

Steam raising plant with above-mentioned structure according to the present invention provides following effect with the washing machine with this device.

At first,, and pass opening that the whole bottom of recipient forms directly and the internal communication of housing downwards, the accumulation of the impurity in the recipient is minimized because recipient extends from the top of housing.

When recipient locates to have chamber structure and when its underpart place had plate shape barrier wall structure, the accumulation of the impurity in the recipient can significantly reduce at an upper portion thereof.

Therefore, can prevent that level sensor and steam heater from breaking down because of the impurity of accumulation, thereby prolong the life-span of heater fuse.

The second, because level sensor is arranged to the mid portion of barrier wall under the misalignment, can prevents that the electrode of level sensor is electrically connected, thereby prevent that level sensor from breaking down.

The 3rd, because recipient has the single recipient structure or the additional recipient structure that single barrier wall is arranged of elongation, with as comprising that up and down two recipient structures of recipient are different under the conventional situation, can reduce the manufacturing cost and the manufacture process of steam raising plant and washing machine.

To those skilled in the art will be apparent, under the situation that does not depart from the spirit or scope of the present invention, can make various modification and variant in the present invention.Therefore, the invention is intended to cover these modification and the variant of this invention, as long as they fall in the scope of claims and their equivalent.

Claims

1. steam raising plant comprises:

Be used to comprise the housing of water, this housing receives heater;

Be used to detect the level sensor of the water level of housing; With

Recipient, this recipient extends downwards from the top of housing when surrounding level sensor, breaks down to prevent the water level sensor, and this recipient has the open bottom that directly is communicated with the inside of housing, is accumulated in the recipient to prevent impurity.

2. steam raising plant as claimed in claim 1, wherein said recipient is by the entire portion of described open bottom and the internal communication of described housing.

3. steam raising plant as claimed in claim 1, wherein said recipient extend to the position approaching with the bottom of described housing.

4. steam raising plant as claimed in claim 1, wherein said recipient comprise the opening that is used to allow to introduce towards described level sensor water.

5. steam raising plant as claimed in claim 4, wherein said opening are formed on the place, bottom of described recipient.

6. steam raising plant as claimed in claim 4, wherein said opening are formed on the side wall portion office of described recipient.

7. steam raising plant as claimed in claim 1 also comprises:

The following barrier wall of extending downwards from the bottom of described housing.

8. steam raising plant as claimed in claim 7, wherein said recipient comprise with first barrier wall of the adjacent layout of described heater and are arranged to and isolated second barrier wall of this first barrier wall.

9. steam raising plant as claimed in claim 8, wherein said second barrier wall are arranged in described first barrier wall below.

10. steam raising plant as claimed in claim 8 arranges that wherein described second barrier wall makes that the lower end of the upper end of described second barrier wall and described first barrier wall is overlapping.

11. steam raising plant as claimed in claim 8, wherein first barrier wall has plate shape.

12. steam raising plant as claimed in claim 8, wherein said level sensor be arranged to described second barrier wall of misalignment mid portion and towards a side of described second barrier wall.

13. steam raising plant as claimed in claim 8, wherein said recipient comprise the opening that the opposing sidewalls that is respectively formed at described recipient is partly located, to allow introducing water towards described level sensor.

14. a washing machine comprises:

Body;

Be installed in the bucket in this body;

Be rotatably installed in the cylinder in this barrel; With

Be used to supply the steam raising plant that steam is given this cylinder, this steam raising plant comprises: be used to comprise the housing of water, this housing receives heater; Be used to detect the level sensor of the water level of housing; And recipient, this recipient extends downwards from the top of housing when surrounding level sensor, breaks down to prevent the water level sensor, and this recipient has the open bottom that directly is communicated with the inside of housing, is accumulated in the recipient to prevent impurity.

15. washing machine as claimed in claim 14, wherein said recipient extends to the position approaching with the bottom of described housing in the internal communication of entire portion by described open bottom and described housing.

16. washing machine as claimed in claim 14, wherein said recipient comprise the opening that is used to allow to introduce towards described level sensor water.

17. washing machine as claimed in claim 16, wherein said opening comprise the opening of the side wall portion office of the bottom that is respectively formed at described recipient and described recipient.

18. washing machine as claimed in claim 14, wherein said steam raising plant also comprise the following barrier wall of extending from the bottom of described housing downwards.

19. washing machine as claimed in claim 18, wherein said recipient comprise with first barrier wall of the adjacent layout of described heater and are arranged to and isolated second barrier wall of this first barrier wall.

20. washing machine as claimed in claim 19, wherein said second barrier wall are arranged in described first barrier wall below.

21. washing machine as claimed in claim 19 arranges that wherein described second barrier wall makes that the lower end of the upper end of described second barrier wall and described first barrier wall is overlapping.

22. washing machine as claimed in claim 19, wherein said level sensor be arranged to described second barrier wall of misalignment mid portion and towards a side of described second barrier wall.

23. washing machine as claimed in claim 19, wherein said recipient comprise the opening that the opposing sidewalls that is respectively formed at described recipient is partly located, to allow introducing water towards described level sensor.