WO2017095163A1

WO2017095163A1 - Tub for dishwasher, dishwasher, and method of controlling same

Info

Publication number: WO2017095163A1
Application number: PCT/KR2016/014050
Authority: WO
Inventors: 조성민; 권재성; 유성민; 윤인철; 이기섭; 함정윤
Original assignee: 삼성전자주식회사
Priority date: 2015-12-03
Filing date: 2016-12-01
Publication date: 2017-06-08
Also published as: CN108289588A; CN108289588B

Abstract

A dishwasher according to the present invention includes a tub having a double wall structure, and is characterized by having a structure in which energy consumption during a washing process can be reduced by virtue of water or air stored in the inner space of the double wall structure of the tub, and water stored in the inner space of the double wall structure can be used in the subsequent washing stage, in order to enable a reduction in the amount of water used.

Description

Dishwasher tub, dish washer and control method

The present invention relates to a dishwasher, and more particularly, to a dishwasher having an improved structure to improve energy efficiency and drying performance.

In general, household appliances requiring a drying function, such as dishwashers, washing machines, dryers, etc. are increasing. The dishwasher is provided with a drying function for removing the washing water remaining on the surface of the dish is completed, the washing machine or dryer is provided with a drying function for drying the laundry in the wet state.

As a dishwasher, for example, the dishwasher is a household appliance that cleans and cleans dishes, and performs a function of washing contaminated dishes and drying the dishes. The drying process of the dishwasher is a process of removing water remaining in the dishware which has been cleaned. The drying process increases the temperature of the water sprayed on the dish during the final rinse, thereby increasing the temperature of the dish, promoting the evaporation of the water on the dish, and condensing the vaporized water vapor in a drying unit located inside or outside the tub, It is the process of removing it by condensation on the wall.

If there is a drying unit according to the type of dishwasher, the fan is operated to circulate the air inside the tub to the drying unit and to proceed with drying through the adsorbent. In this case, however, additional space and components for the drying unit are required, and if an adsorbent is used to remove the water vapor, a regeneration process is required to dry the adsorbent so that the dehumidifier can absorb the water vapor in the next drying process.

Therefore, additional energy for regeneration of the adsorbent is consumed, and there is a problem that the washing space in which the dish washing is reduced is increased as the amount or size of the adsorbent is increased to secure drying performance.

In addition, in general, the dishwasher attaches a vibration damper to the outer surface of the tub to reduce vibration noise generated during the high-pressure cleaning process, and additionally attaches an insulation to reduce heat leakage.

In the case of vibration damping materials, the heat density absorbed is high due to the high density and specific heat, which affects energy consumption. Therefore, the thickness of vibration damper should be minimized, but asphalt vibration damper of 3 ~ 4mm thickness is generally used to prevent noise vibration at an appropriate level.

In order to reduce heat loss to the outside, proper insulation is required. Generally, fabric felt-based insulation is attached to the outside of the tub. However, attaching insulation to all sides of the tub is difficult due to space constraints, corner attachment problems, and interference with other structures. In addition, increasing the heat insulating performance of the heat insulating material or increasing the thickness of the heat insulating material is a cause of increasing energy consumption by increasing the heat capacity. In addition, during drying, the water remaining in the tableware must be evaporated to condense on the tub wall. However, when the insulation performance of the tub increases, the cooling speed of the tub wall decreases, thereby reducing the condensation effect.

One aspect of the present invention provides a tub including a double walled tub or a double wall panel, and the storage space or the double wall of the interior of the double wall structure to simultaneously perform the insulation and cooling function of the wall of the washing room According to an embodiment of the present invention, a dishwasher having a structure capable of selectively introducing water according to each stage of a dishwashing cycle is provided.

Another aspect of the present invention provides a dishwasher having a structure in which water used for cooling the wall of the washing chamber can be used for the next washing process so as to reduce the total water consumption.

Dishwasher tub according to the spirit of the present invention is the front side is open, the outer wall is separated from at least one of the walls of the washing chamber and the wall surrounded by the left wall, the right wall, the upper wall, the lower wall and the rear wall. It may include.

The dish washer tub may further include a storage space of water or air formed between the at least one wall and the outer wall of the washing chamber.

The junction of the at least one wall and the outer wall of the washing chamber may be sealed.

The inner side wall and the outer side wall may be formed of at least one of a metal material and a resin material, and the inner side wall and the outer side wall may be joined by at least one of welding, heat fusion, and adhesion.

The dish washing tub may further include a partition for dividing the storage space so that the storage space may be partially filled with water or air.

The dish washer tub may further include a pattern formed on the at least one wall or the outer wall of the washing chamber so that the distance between the at least one wall and the outer wall of the washing chamber is kept constant.

The dish washer tub may further include a spacer connecting the at least one wall and the outer wall of the washing room so that the distance between the at least one wall and the outer wall of the washing room is kept constant.

The dishwasher tub may further include a rib between the at least one wall and the outer wall of the washing chamber so that the distance between the at least one wall and the outer wall of the washing chamber is kept constant.

The dish washer tub may further include an overflow tube provided to be recovered to the washing chamber when the storage space overflows.

The overflow pipe may be provided with a check valve to allow only flow from the storage space to the washing chamber.

A filter may be provided on the upper wall of the washing chamber to which the overflow pipe is connected so that foreign substances do not flow into the overflow pipe.

The dish washer tub may further include a blocking member provided between the at least one wall and the outer wall of the washing chamber and capable of reducing vibration and noise.

The blocking member may include a dustproof member coated on the at least one wall of the washing chamber.

The blocking member may include an air cap provided on the outer wall.

The blocking member may include a heat insulating member coated on the outer wall.

According to an aspect of the present invention, a dishwasher includes a washing chamber having an open front surface, an outer wall spaced apart from at least one wall of the washing chamber, at least one wall of the washing chamber, and A tub including a storage space formed between the outer wall, a sump provided in the lower portion of the tub and the sump of the washing water sprayed into the washing chamber, a water supply pipe provided to supply water to the sump, water supply to the storage space or from the storage space It may include a water supply pipe that can drain, an external water supply source, a valve to which the water supply pipe and the water supply pipe are connected, and a controller for controlling the valve.

The controller may be configured to supply water supplied from the external water supply to the storage space, drain the water stored in the storage space to the sump, or supply water supplied from the external water supply to the sump. The valve can be controlled.

The apparatus may further include a water level sensor capable of sensing an amount of water stored in the storage space, and the controller may control the valve according to the level of the storage space detected by the water level sensor.

The controller may control the valve to drain water when the water stored in the storage space is not used for a predetermined time.

The tub may further include a partition for dividing the storage space to partially fill the storage space with water or air, and the control unit may control water or air to be selectively supplied to the space divided by the partition. have.

Dishwasher tub according to the spirit of the present invention is the front is open, the washing chamber surrounded by at least one wall, and is mounted on the outside of at least one wall of the washing chamber, the water supplied from the external water source or It may include a double wall panel provided with a storage space for storing air.

The double wall panel includes an inner wall joined to at least one wall of the washing chamber and an outer wall spaced apart from the inner wall, wherein a joining surface of the inner wall and the outer wall is sealed, and the inner wall is the It may be bonded to the at least one wall of the cleaning chamber by a thermally conductive bonding member.

The dishwasher according to the spirit of the present invention may block or absorb the inner tub forming the washing chamber and the heat inside the washing chamber, and may be spaced apart from the inner tub so as to reduce noise caused by the vibration of the inner tub. It may include an outer tub surrounding the inner tub to leave.

In the method of controlling a dishwasher according to the spirit of the present invention, when the dishwashing cycle starts, the water stored in the storage space between the wall of the tub and the outer wall of the tub is drained to the sump provided in the lower portion of the tub, Filling air, pre-washing using the water moved to the sump, main water is supplied to the sump from the external water source to the main wash, draining the sewage after the main wash and again the sump from the external water source The water is rinsed and washed with water, and water is supplied to the storage space from the outside to dry the dishes.

In addition, by detecting the amount of water in the storage space by the water level sensor, it is possible to water the storage space or to drain the water stored in the storage space.

In addition, if the next dish washing cycle does not start for a predetermined time after the dish washing cycle ends, the water stored in the storage space can be drained.

In addition, the storage space is divided by at least one partition, it is possible to selectively supply water or air to the space divided by the partition.

Dishwasher tub according to the spirit of the present invention, the front surface is open and surrounded by at least one wall, the washing room, and is mounted to the outside of the at least one wall of the washing room, and can store water or air therein It may include a pouch provided with a storage space.

The pouch may include a frame that maintains a constant internal interval and divides the storage space.

The pouch may include a first film and a second film, and the first film and the second film may be bonded to each other at the outside of the frame.

The first film and the second film may each include an inner surface of a resin material, and the first film and the second film may be bonded by a heat fusion method.

The frame may include a resin material, and the first film and the second film may be bonded to the frame by a heat fusion method.

The frame may include an outlet opening provided to allow water or air to flow in or out of the storage space of the pouch.

The frame may include an overflow outlet provided to be recovered to the washing chamber when the storage space of the pouch overflows with water.

The pouch may be bonded to the at least one wall of the washing chamber by a thermally conductive bonding member.

The first film and the second film may include outer surfaces of nylon or aluminum, respectively.

The frame may include an outer wall determining the shape of the pouch and a partition wall dividing the storage space inside the outer wall.

The partition wall may include an opening through which water or air may flow into the divided storage space.

The storage space may include a first chamber through which water or air may flow in or out, and a second chamber in which air is stored and water does not enter.

The outer surface of the at least one wall of the washing chamber may comprise a pattern of protruding shape, and the frame may be attached to the outer surface of the at least one wall on which the pattern is formed. It may include a cutout provided on one side of the outer wall or the partition wall to correspond to the pattern.

The dishwasher tub may further include a pouch cover disposed to surround the pouch on the outside of the pouch and mounted to the at least one wall of the washing chamber.

The thermal insulation of the air layer in the interior of the double-walled structure of the tub reduces the heat loss during the heating and cleaning process, thereby reducing the overall energy consumption.

In addition, there is no heat load of the vibration damper attached to the outer surface of the conventional tub can reduce the total energy consumption.

In addition, water stored in the inner space of the double wall structure can be reduced in the next washing process, and the water stored in the inner space of the double wall structure is generally higher than the temperature of the water supplied from the external water source. Therefore, the energy used when raising the temperature of the washing water can be reduced.

In addition, since there is no vibration damper and insulation that existed in the conventional dishwasher, the washing space of the tub can be further secured, and the vibration damping and insulation structure can be simplified.

1 is a schematic cross-sectional view showing a dishwasher according to an embodiment of the present invention.

Figure 2 is a perspective view of the bottom of the washing chamber of the dishwasher of Figure 1

3 is a perspective view showing a lower portion of the tub of the dishwasher of FIG.

Figure 4a is a perspective view of the tub of the dishwasher of Figure 1

4B is a cross-sectional perspective view of the tub of the dishwasher of FIG. 4A

FIG. 5 is an exploded rear perspective view of the upper outer wall of the tub of FIG. 4A; FIG.

6 is a view illustrating an upper surface of a washing room of the dish washing machine of FIG. 1.

7A and 7B are cross-sectional views illustrating a bonding state of the double wall structure of the dish washing machine of FIG. 1.

8A and 8B are side views of a double wall structure or double wall panel of a dishwasher according to one embodiment of the present invention.

9 is a cross-sectional view of a spacer for maintaining a constant gap between the double wall structure of the dishwasher according to one embodiment of the present invention.

10A is a cross-sectional view showing a blocking member disposed between the double wall structure of the dishwasher according to one embodiment of the present invention.

FIG. 10B is a perspective view of the outer wall of FIG. 10A

11 is a cross-sectional view showing a bonding state of the double wall panel of the dishwasher according to another embodiment of the present invention.

12 is a perspective view showing a cross section of a double tub of the dishwasher according to another embodiment of the present invention.

13 is a schematic diagram illustrating a dish washing cycle of a dish washing machine according to an embodiment of the present invention.

14 is a control block diagram of a dish washer according to one embodiment of the present invention.

15 is a control flow chart of a dish washer according to one embodiment of the present invention.

16 is an exploded perspective view illustrating the pouch separated from the dishwasher according to another embodiment of the present invention.

17 is a perspective view showing the inside of the pouch shown in FIG.

18 is a perspective view of the frame shown in FIG. 17.

19 is a perspective view of the pouch of the dishwasher according to another embodiment of the present invention.

20 is an exploded perspective view illustrating the pouch cover separated from the dishwasher according to another embodiment of the present invention.

Configurations shown in the embodiments and drawings described herein is a preferred embodiment of the disclosed invention, there can be various modifications that can replace the embodiments and drawings of the present specification at the time of the filing of the present application.

In addition, the same reference numerals or signs given in each drawing of the present specification represent parts or components that perform substantially the same function.

Also, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting and / or limiting the disclosed invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. As used herein, the terms "comprise", "comprise" or "have" are intended to designate that the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification exist. Or any other feature or number, step, operation, component, part, or combination thereof, is not excluded in advance.

Hereinafter, with reference to the accompanying drawings will be described in detail dishwasher and its control method according to an embodiment of the present invention.

1 is a schematic cross-sectional view illustrating a dishwasher according to an embodiment of the present invention, FIG. 2 is a view illustrating a bottom surface of a washing chamber of the dishwasher of FIG. 1, and FIG. 3 is a tub of the dishwasher of FIG. 1. Is a perspective view of the lower part of the lens. 4A is a perspective view of the tub of the dishwasher of FIG. 1, and FIG. 4B is a cross-sectional perspective view of the tub of the dishwasher of FIG. 4A. FIG. 5 is a rear perspective view illustrating an exploded upper outer wall of the tub of FIG. 4A, and FIG. 6 is a view illustrating an upper surface of the washing chamber of the dish washing machine of FIG. 1.

As shown in FIG. 1 and FIG. 2, the dishwasher 1 may include a case 10 forming an exterior and a tub 20 provided inside the case 10 and forming a washing chamber 30. Can be. The washing chamber 30 includes

baskets

12 and 13 for storing dishes,

spray nozzles

310, 320, 330 and 340 for spraying washing water, and moves from the bottom surface 35 of the washing chamber 30 to reflect the washing water toward the dishes. The vane 350 and the vane driving device 350 for driving the vane 350 may be provided.

The tub 20 may have an approximately box shape in which an opening is provided at the front side to allow the dishes to be put in and taken out. The front opening of the tub 20 can be opened and closed by the door 11. The washing chamber 30 formed in the tub 20 may have an upper surface 31, a rear surface 32, a left surface 33, a right surface 34, and a bottom surface 35.

The

baskets

12, 13 may be wire racks made of wires to allow the wash water to pass through without accumulation. The

baskets

12 and 13 may be detachably provided in the washing room 30. The

baskets

12 and 13 may include an upper basket 12 disposed above the washing chamber 30, and a lower basket 13 disposed below the washing chamber 30.

The spray nozzles 310, 320, 330, and 340 may wash dishes by spraying washing water at a high pressure. The injection nozzles 310, 320, 330, and 340 may include an upper rotary nozzle 310 provided at an upper portion of the washing chamber 30, an intermediate rotary nozzle 320 provided at an intermediate portion of the washing chamber 30, and a washing chamber 30. It may include fixed nozzles (330, 340) provided at the bottom.

The upper rotary nozzle 310 is provided on the upper side of the upper basket 12, and rotates by water pressure to spray the washing water in the downward direction. To this end, injection holes 311 may be provided at a lower end of the upper rotary nozzle 310. The upper rotary nozzle 310 may spray the washing water directly toward the dishes stored in the upper basket 12.

The intermediate rotary nozzle 320 is provided between the upper basket 12 and the lower basket 13, and rotates by water pressure to spray the washing water in the vertical direction. To this end, injection holes 321 may be provided at the top and bottom of the intermediate rotary nozzle 320. The intermediate rotary nozzle 320 may directly spray the washing water toward the dishes stored in the upper basket 12 and the lower basket 13.

The fixed

nozzles

330 and 340 are provided not to move unlike the

rotary nozzles

310 and 320, and are fixed to one side of the washing chamber 30. The fixed

nozzles

330 and 340 may be disposed adjacent to the rear surface 32 of the washing chamber 30 to spray the washing water toward the front of the washing chamber 30. Therefore, the washing water sprayed from the fixed

nozzles

330 and 340 may not directly face the dishware.

The washing water sprayed from the fixed

nozzles

330 and 340 may be reflected by the vane 350 to the dish side. The fixed

nozzles

330 and 340 may be disposed under the lower basket 13, and the vane 350 may reflect the washing water sprayed from the fixed

nozzles

330 and 340 upward. That is, the washing water sprayed from the fixed

nozzles

330 and 340 may be reflected by the vanes 350 toward the dishes stored in the lower basket 13.

The fixed

nozzles

330 and 340 may have a plurality of injection holes 331 and 341 arranged in the left and right directions of the washing chamber 30, respectively. The plurality of injection holes 331 and 341 may spray the washing water toward the front.

The vane 350 may be extended in the left and right directions of the washing chamber 30 to reflect all the washing water sprayed from the plurality of

spray holes

331 and 341 of the fixed

nozzles

330 and 340. That is, one end in the longitudinal direction of the vane 350 is adjacent to the left surface 33 of the washing chamber 30, and the other end in the longitudinal direction of the vane 350 is provided adjacent to the right surface 34 of the washing chamber 30. Can be.

The vane 350 may linearly reciprocate along the spray direction of the washing water sprayed from the fixed

nozzles

330 and 340. That is, the vane 350 may linearly reciprocate along the front and rear directions of the washing chamber 30.

Accordingly, the linear spray structure including the fixed

nozzles

330 and 340 and the vane 350 may clean the entire area of the washing chamber 30 without the blind spot. Rotating nozzles are distinguished from being able to spray wash water only within the range of the turning radius.

The fixed

nozzles

330 and 340 may include a left fixed nozzle 330 disposed on the left side of the washing chamber 30 and a right fixed nozzle 340 disposed on the right side of the washing chamber 30.

The rotating

nozzles

310 and 320 and the fixed

nozzles

330 and 340 may spray washing water independently of each other. Furthermore, the left fixed nozzle 330 and the right fixed nozzle 340 may also spray washing water independently of each other.

The washing water sprayed from the left fixed nozzle 330 is reflected only to the left region of the washing chamber 30 by the vane 350, and the washing water sprayed from the right fixing nozzle 340 is washed by the vane 350. It can be reflected only in the right region of 30).

Therefore, the dishwasher 1 may separately wash the left side and the right side of the washing chamber 30. Unlike the present embodiment, it is not necessarily divided into only left and right sides, but may be further subdivided as necessary.

1 to 3, the lower portion of the tub 20 pressurizes the sump 40 for storing the washing water and the circulating pump 50 and the sump to pressurize the washing water of the sump 40 to the

injection nozzles

310, 320, 330, and 340. A drain pump 60 for discharging the filthy water, which has been stored at 40, to the outside of the case 10, may be disposed. A drain pipe 61 may be connected to the drain pump 60.

In addition, the dishwasher 1 supplies water from a case brake 41 and a case brake 41 in which a flow sensor (not shown) is provided to adjust the flow rate of water supplied from an external water supply. It may include a water softener 42 for removing calcium, iron and the like dissolved in tap water. The case brake 41 may be provided in the form of a panel on the side of the tub 20, and the water softener 42 may be provided below the tub 20.

Soft water of low hardness in the water softener 42 is supplied to the sump 40 to be used as washing water. The wash water stored in the sump 40 may be heated in the heater 70 to increase the washing efficiency according to the stage of the dish washing cycle, pressurized by the circulation pump 50, and spray nozzles through the nozzle water supply pipe 51. Moving to (310, 320, 330, 340) may be injected into the washing room (30).

1 to 4B, the tub 20 of the dishwasher according to one embodiment of the present invention includes a double wall including an inner wall 110 on the side of the washing chamber 30 and an outer wall 120 on the case side. It may include a structure.

The double wall structure may be provided on at least one of the upper surface 31, the rear surface 32, the left surface 33, the right surface 34, and the bottom surface 35 of the tub 20. That is, the tub 20 may include an inner wall 110 forming the washing chamber 30, the inner wall 110 is the upper wall 111, the rear wall 112, the left wall 113, The right wall 114 and the bottom wall 115 may be included. The outer wall 120 may be formed to be spaced apart from at least one of the inner walls 110. In addition, a storage space 130 for storing water or air may be formed in the inner space between the inner wall 110 and the outer wall 120.

Water introduced into the case 10 of the dishwasher 1 through the case brake 41 and the water softener 42 from an external water supply may be supplied to the storage space 130 or to the sump 40. In addition, the water stored in the storage space 130 may be supplied to the sump (40).

Specifically, a valve 43 may be provided at the outlet side of the water softener 42, and the water supply pipe 44 connected to the sump and drain pipe 160 and the sump 40 connected to the storage space 130 may be provided at the valve 43. This can be connected. In addition, the dishwasher 1 may include a control unit 600 provided to control the valve 43.

The controller 600 may supply water supplied from an external water supply source to the storage space 130 through the water supply and drain pipe 160, or drain the water stored in the storage space 130 from the storage space 130 to the sump 40. The valve 43 may be controlled to control the valve 43, and the valve 43 may be controlled to supply the water supplied from the external water supply source to the sump 40 through the water supply pipe 44.

In addition, although not shown in the drawing, the storage space 130 may be provided with a water level sensor for sensing the amount of stored water, the control unit 600 according to the level of the storage space 130 is detected by the water level sensor valve (43) can be controlled.

In addition, the controller 600 may control the valve 43 by detecting the amount of the washing water in the washing chamber 30 by a flow sensor (not shown) provided in the case brake 41.

In addition, when the storage space 130 is not used for a certain time, the control unit 600 is a valve 43 to drain the water stored in the storage space 130 so that bacteria or the like do not breed in the stored water or storage space 130. ) Can be controlled.

The double wall structure of the tub 20 may include a partition 140 that divides the storage space 130 to partially fill the storage space 130 with water or air. The inner wall 110 has an upper wall 111, a rear wall 112, a left wall 113, a right wall 114, and a lower portion by a partition 140 connecting the inner wall 110 and the outer wall 120. The outer wall 120 may be divided into an upper outer wall 121, a rear outer wall 122, a left outer wall 123, a right outer wall 124, and a lower outer wall 125. In addition, the partition 140 may be provided to further divide the storage space 130 formed by the inner wall 110 and the outer wall 120 on each side, and in the divided storage space 130, water or It may have a precisely sealed coupling structure so that air does not leak.

The dishwasher 1 according to an embodiment of the present invention may be provided to store water or air in the divided rear storage space, the left storage space and the right storage space, and the air is stored in the upper storage space and the lower storage space. It may be arranged to be stored.

Referring to FIG. 3, the water supply and drain pipe 160 of the storage space 130 is divided into a rear storage space, a left storage space, and a right storage space, which are connected to the rear water supply pipe 162, the left water supply pipe 163, and the right water supply pipe. It may be branched to the drain pipe 164. Although not shown in the figure, a valve is provided at a branch point of the water supply and drainage pipe 160, and water may be selectively supplied to each storage space 130 by the controller 600.

In addition, referring to FIGS. 1 and 5, when the dishwasher 1 overflows with the storage space 130 filled with water, the dishwasher 1 may include an overflow tube 150 provided to recover the overflowed water to the washing chamber. . When the storage space 130 is divided according to an embodiment of the present invention, the rear overflow pipe 152, the left overflow pipe on the upper side of the rear storage space, the left storage space and the right storage space where water can be stored 153 and the right overflow pipe 154 may be provided respectively.

Referring to Figure 6, according to an embodiment of the present invention, the filter 31 to prevent foreign matter from entering the storage space 130 on the upper surface 31 of the washing chamber 30 is connected to one end of the overflow pipe 150 170 may be provided.

In addition, although not shown in the drawings, the overflow pipe 150 may be provided with a check valve that allows only the flow of water from the storage space 130 to the washing chamber 30.

The inner wall 110 and the outer wall 120 of the tub 20 forming the storage space 130 is a junction of the inner wall 110 and the outer wall 120 leaks water or air stored in the storage space 130. Can be hermetically sealed. In addition, as described above, when the partition 140 connecting the inner wall 110 and the outer wall 120 and dividing the storage space 130 is provided, the junction portion may be tightly sealed.

The inner wall 110 and the outer wall 120 of the double wall structure may be formed of the same material or different materials. Specifically, the inner wall 110 and the outer wall 120 may be formed of a metal material such as stainless steel or a resin material such as plastic.

Referring to FIG. 7A, the inner wall 110 and the outer wall 120 may be joined intimately without using a separate adhesive. When the inner wall 110 and the outer wall 120 is formed of a metal material, the inner wall 110 and the outer wall may be joined by welding at the bonding surface 180, the inner wall 110 and the outer wall 120 is When formed of a resin material, the inner wall 110 and the outer wall may be bonded by heat plate bonding at the bonding surface 180. In addition, when the inner wall 110 is formed of a metal material and the outer wall 120 is formed of a resin material, fine grooves are formed in the bonding surface 180 of the inner wall 110 with a laser and the bonding surface of the outer wall 120 ( 180) may be bonded by laser welding to heat fusion.

Referring to FIG. 7B, the inner wall 110 and the outer wall 120 may be tightly bonded using an adhesive. When the inner wall 110 and the outer wall 120 are formed of a resin material, the inner wall 110 and the outer wall may be bonded by applying an adhesive to the adhesive layer 181, and the inner wall 110 is formed of a metal material and the outer wall ( 120 may be bonded by applying a primer-less adhesive to the adhesive layer 181 when formed of a resin material.

Since water may be stored in the storage space 130 formed in the double wall structure according to the exemplary embodiment of the present invention, the double wall structure may be full due to water load. Therefore, in order to prevent such a full stomach phenomenon, the dishwasher 1 may include a full stomach preventing structure.

8A and 8B are side views of a double wall structure or a double wall panel of a dishwasher according to an embodiment of the present invention, and FIG. 9 illustrates a distance between the double wall structures of the dishwasher according to an embodiment of the present invention. Is a cross-sectional view of the spacer to be maintained.

The inner wall 110 or the outer wall 120 of the double wall structure may include a pattern 190 that can increase the rigidity so that the gap therebetween is kept constant. The pattern 190 may be formed by press working or die casting.

8A and 8B, the pattern 190 formed on the inner wall 110 or the outer wall 120 may be formed in various forms as necessary. In addition, a spacer 200 may be disposed to maintain a constant gap between the inner wall 110 and the outer wall 120. The spacer 200 may be disposed at any position as needed.

9, a perforation may be required on the inner wall 110 or the outer wall 120 to arrange the spacer 200. One end of the rib 201 is hermetically bonded to the periphery of the hole where the spacer 200 formed on the outer wall 120 is to be inserted, and a contact surface for contacting the inner wall 110 with the other end of the rib 201 can be formed. have. A sealing layer 203 may be formed between the contact surface and the inner wall 110 to maintain airtightness, and a sealing layer 203 is formed between the head of the spacer 200 and the inner wall 110 to maintain airtightness. Can be. In addition, a washer 202 may be inserted between the head of both ends of the spacer 200 and the inner wall 110 or the outer wall 120.

Although not shown in the drawings, the rib 201 may be provided on the main surface of the hole in which the spacer 200 is disposed, but the inner wall 110 is maintained so that the gap between the inner wall 110 and the outer wall 120 is kept constant. It may be provided in a circular or any other shape in any space between the outer wall and the outer wall (120).

In general, the dishwashing cycle of the dishwasher is largely composed of washing, rinsing, and drying stages. The washing step may be divided into a preliminary washing process and a main washing process. In the preliminary washing process, a predetermined amount of water is supplied to the sump 40 to remove foreign substances adhering to the tableware, and the washing water pressurized by the circulation pump 50. Is injected into the washing chamber 30 at high pressure through the injection nozzles (310, 320, 330, 340) and then circulated to pre-wash.

In the initial stage of the washing process, the temperature of the washing water from the sump 40 is increased by about 50 degrees in the heater 70 to increase the washing efficiency. The heated wash water raises the temperature of the dishes, baskets, tubs and structures and consumes a considerable amount of energy in the process. In the washing section in earnest, efficient washing is performed by increasing the rotational speed of the circulation pump 50 and through the stirring mechanism of the

spray nozzles

310, 320, 330, 340 and the vane 350 to sufficiently reach the dishes.

After completion of the main cleaning process, the contaminated water is drained by the drain pump 60 in the rinsing step, and additional water is supplied to the sump 40. The rinse washing step goes through a cold rinse process to wash away the foreign substances separated from the dishes and goes to a hot rinse process that raises the temperature of the dishes for final rinsing and drying. In the hot rinse section, the heater 70 is operated to raise the temperature of the dish about 60 degrees.

When the temperature of the dish is raised by the hot rinse process, the drying step drains the washing water and stops all the operations. Heat is transferred to the outside from the wall surface of the washing room 30, and drying proceeds as water condenses on the wall surface.

The double wall structure of the dishwasher 1 according to the embodiment of the present invention can reduce vibration and noise caused by the dishwashing cycle. In addition, the double wall structure not only prevents heat loss at the wall of the tub when the space between the double walls is filled with air, but also rapidly heats the wall of the tub when water is supplied to the space between the double walls. Absorption can increase the efficiency of the drying process.

The double wall structure according to an embodiment of the present invention may include various blocking members between the inner wall 110 and the outer wall 120 to increase the dust, soundproof, and heat insulation performance.

10A is a cross-sectional view illustrating a blocking member disposed between the double wall structures of the dish washing machine according to one embodiment of the present invention, and FIG. 10B is a perspective view illustrating the outer wall of FIG. 10A.

10A and 10B, a dustproof member 210 may be coated on the inner wall 110 surface of the storage space 130 to reduce vibration and noise. In addition, the outer wall 120 surface of the storage space 130 may be coated with a heat insulating member 212 to reduce the radiant heat transfer from the tub 20, the air cap 211 is provided to increase the heat insulating performance Can be.

According to an embodiment of the present invention, the tub of the dishwasher may be formed in a double wall structure, or, according to another embodiment of the present invention, a double wall panel having a storage space may be attached to the tub of the dishwasher. In addition, the tub of the dishwasher according to another embodiment of the present invention may be formed in a double.

11 is a cross-sectional view illustrating a bonding state of the double wall panel of the dishwasher according to another embodiment of the present invention, and FIG. 12 is a perspective view illustrating a cross section of the double tub of the dishwasher according to another embodiment of the present invention. .

Tub 20 of the dishwasher according to another embodiment of the present invention has a storage space for storing the water or air supplied from the external water source on at least one of the left, right, rear, top and bottom of the washing room A double wall panel may be provided.

Referring to FIG. 11, the double wall panel may include an inner wall 410 joined to a wall of the tub 20 and an outer wall 420 spaced apart from the inner wall 410 by a predetermined interval toward the case 10. have. In addition, the joining surface 480 of the inner wall 410 and the outer wall 420 may be formed in an intimate manner by welding, heat fusion, laser welding, etc., the inner wall 410 is a thermal paste on the wall surface of the tub 20 It may be bonded by a thermally conductive bonding member 481 such as (thermal paste) or a thermal conductive tape.

In addition, referring to Figure 12, the dishwasher according to another embodiment of the present invention the outer tub surrounding the inner tub 500 at a predetermined interval from the inner tub 500 and the inner tub 500 forming a washing chamber. 600 may be included. The outer tub 600 may block or absorb heat inside the washing chamber and may reduce noise due to vibration of the inner tub 500.

Hereinafter, a dish washing cycle and a control method of the dish washing machine according to an embodiment of the present invention will be described.

FIG. 13 is a system diagram illustrating a dish washing cycle of a dish washing machine according to an embodiment of the present invention, FIG. 14 is a control block diagram of a dish washing machine according to an embodiment of the present invention, and FIG. 15 is an embodiment of the present invention. Control flow chart of a dishwasher according to an example.

Referring to FIG. 13, (a) shows the flow of washing water in the preliminary washing process of the dish washing cycle, (b) shows the flow of the washing water in the main washing process of the dish washing cycle, and (c) It shows the flow of the washing water in the rinsing washing process of the dish washing cycle, (d) shows the flow of the washing water in the drying process of the dish washing cycle.

Referring to FIG. 14, the dishwasher according to an embodiment of the present invention may include an input unit 601 that receives a user input and transmits a start signal of a dishwashing cycle to the controller 600. The control unit 600 receives a signal of the input unit 601 and a signal of the sensor unit 602 including a flow sensor of the case brake, a water level sensor of the storage space 130, and the like according to each step of the dish washing cycle. 43, the circulation pump 50, the drain pump 60, the heater 70, and the like can be controlled.

Referring to FIGS. 13 and 15, when the preliminary washing process of the dish washing cycle is started, the controller 600 controls the valve 43 to supply the water stored in the storage space 130 to the sump 40 and to store the storage space ( 130 is filled with air (701). The water supplied to the sump 40 is circulated by the circulation pump 50 to pre-wash the dishes in the washing chamber 30 (702). At this time, the controller 600 operates the heater 70 to increase the temperature of the washing water. Since the water stored in the storage space 130 is generally higher in temperature than the water coming from the external water source, using the water stored in the storage space 130 can reduce the use of water as well as improve the energy efficiency. .

When the main washing process is completed after the preliminary washing process, the controller 600 controls the valve 43 to further supply the insufficient water to the sump 40 from the external water supply (703). The controller 600 may control the amount of water supplied from the external water supply source through the flow sensor provided in the case brake. The control unit 600 circulates the washing water collected in the sump 40 by operating the circulation pump 50 to main-wash the dishes in the washing room 30 (704). At this time, the washing water is heated by the heater 70, the washing agent may be mixed in the washing water.

Before finishing the rinsing step after the main washing process, the control unit 600 operates the drain pump 60 to drain the sewage generated in the washing step, and controls the valve 43 to supply the water required for the rinsing process from the external water supply. Supply to sump 40 (705). When the rinsing washing step is started, a cold rinsing process is first performed. At this time, the control unit 600 stops the operation of the heater 70 and rinses washing while circulating the washing water by the circulation pump 50 (706). After the cold rinsing process, the control unit 600 operates the heater 70 to heat the washing water, and finally performs a hot rinsing process of rinsing and washing dishes. The washing water heated during the hot rinse process raises the temperature of the dishes.

Since the preliminary washing process starts until the water is drained from the storage space 130, the storage space 130 remains filled with air until the hot rinsing process is completed, and the air layer is filled in the storage space 130. The energy consumption by the heater 70 can be reduced by the heat insulation effect. In addition, the air layer of the storage space 130 may reduce the noise and vibration generated in the dish washing cycle.

After the rinsing and washing is finished, the control unit 600 operates the drain pump 60 to drain the washing water, and supplies water to the storage space 130 from an external water supply source (707). The introduced cold water cools the wall of the washing chamber 30, and the water in the washing chamber 30 is dried while the water evaporated from the dishes heated in the hot rinse process is condensed on the wall of the washing chamber 30 (708).

The water supplied to the storage space 130 may be used in the preliminary washing step when the next dish washing cycle starts. The control unit 600 drains the water stored in the storage space 130 when the next dish washing cycle does not start for a predetermined time after the end of the dish washing cycle, and when the next dish washing cycle is started, Upon detection, pre-cleaning can be provided by supplying water from an external water supply.

In addition, the controller 600 may supply an appropriate amount of water to the storage space 130 according to the detection of the water level sensor provided in the storage space 130. In addition, in order to effectively utilize the storage space 130, the storage space 130 may be divided by at least one partition, and the controller 600 may selectively supply water or air to the space divided by the partition. Can be.

In addition, although not shown in the drawing, the water supply pipe and the drain pipe may be separately provided in the storage space 130, when the water supply pipe is provided on the upper portion of the storage space 130 of the washing chamber 30 in the drying process of the dish washing cycle The efficiency of cooling the wall can be increased.

According to another embodiment of the present invention, a pouch having a storage space may be attached to the tub of the dishwasher.

FIG. 16 is an exploded perspective view illustrating the pouch separated from the dishwasher according to another embodiment of the present invention, FIG. 17 is a perspective view showing the inside of the pouch shown in FIG. 16, and FIG. 18 is a frame shown in FIG. 17. Perspective view.

16 to 18, the tub 20 of the dishwasher according to another embodiment of the present invention is supplied from an external water source to at least one of an upper surface, a rear surface, a left surface, a right surface, and a bottom surface of the washing room. A pouch 800 having a storage space 130 for storing water or air may be attached.

The tub 20 may include an upper wall 111, a rear wall 112, a left wall, a right wall 114, and a lower wall forming the washing chamber, and the pouch 800 may include at least one of the washing chambers. It can be mounted on the outside of the wall.

Inside the pouch 800, a storage space 130 for storing water or air is provided. The pouch 800 may include a frame 810 that maintains a constant internal space and divides the storage space 130.

The pouch 800 may include a first film 820 and a second film 821, and may be formed by bonding the edge portions 825 of the first film 820 and the second film 821 to each other. have. The first film 820 and the second film 821 may be provided to be intimately bonded to each other at the outside of the frame 810 so that water or air may not leak from the storage space 130 therein. The inner side surface 822 of the first film 820 and the second film 821 may include a resin material, and the first film 820 and the second film 821 may be bonded together by heat fusion method. Can be.

The first film 820 and the second film 821 may not only be bonded to each other on the outside of the frame 810, but may also be bonded to the frame 810 at a portion in contact with the frame 810. The frame 810 may include a resin material, and may be intimately bonded to the inner surfaces 822 of the first film 820 and the second film 821 including the resin material by a heat fusion method.

In the pouch 800, at least one of a surface formed of the first film 820 and a surface formed of the second film may be adhered to an outer side of at least one wall of the washing chamber. The pouch 800 may be attached to at least one wall of the cleaning chamber by a thermally conductive bonding member such as a thermal paste or a thermally conductive tape.

The outer surface 823 of the first film 820 or the second film 821 of the pouch 800 may include a nylon material or an aluminum material. When the outer surface 823 of the first film 820 or the second film 821 includes an aluminum material, heat may be efficiently exchanged with at least one wall of the washing chamber.

The frame 810 may include an outer wall 811 forming an outer shape and a partition 812 provided inside the outer wall 811. The shape of the pouch 800 may be determined according to the shape of the outer wall 811 of the frame 810.

19 is a perspective view illustrating the pouch of the dishwasher according to another embodiment of the present invention.

16 and 19, another configuration of a dishwasher such as a case brake disposed on one side of the tub 20 may be disposed. Accordingly, the pouch 801 may include a frame 810 having various shapes of the outer wall 811, and the pouch 800 may be formed in various shapes according to the shape of the outer wall 811. Can be.

The partition wall 812 may divide the storage space 130 inside the outer wall 811 to partially fill the storage space 130 inside the pouch 800. The inner side surfaces 822 of the first film 820 and the second film 821 of the pouch 800 may be joined to the partition wall 812 by a heat fusion method, and the junction line 824 of FIG. 17 may be a partition wall ( According to the shape of the 812, the first film 820 or the second film 821 of the pouch 800 is bonded to the partition wall 812. The partition wall 812 may be provided to divide the space inside the outer wall 811 into a honeycomb shape, and may divide the storage space 130 inside the pouch 800 into hexagonal chambers having a honeycomb shape. In addition, a filling phenomenon that may occur in the pouch 800 may be prevented by bonding the partition wall 812 and the first film 820 or the second film 821.

The partition 812 may include an opening 813 through which water or air may flow into the divided storage space 130. The opening 813 may be provided in the middle of the partition wall 812, or may be provided in a form in which one side of the partition wall 812 is cut out.

The storage space 130 may include a first chamber in which water or air may flow in or out, and a second chamber in which air is stored and water does not enter. That is, some of the chambers formed by the partition wall 812 may be formed so that the opening 813 is not provided in the partition wall 812 such that water does not flow in.

The outer surface of at least one wall of the cleaning chamber may include a raised pattern 802 provided to increase rigidity. In general, the outer wall 811 and the partition wall 812 may be formed at the same height in order to maintain a constant interval inside the pouch 800. That is, the outer wall 811 and the partition wall 812 may be generally formed at the same height so that the thickness of the pouch 800 is constant.

However, the frame 810 is cut out at one side of the outer wall 811 or the partition wall 812 so that the pouch 800 may be in close contact with the outer surface of at least one wall of the washing chamber in which the pattern 802 is formed. It may include a portion 814. The cutout 814 formed in the frame 810 may form a recess 803 on one surface of the pouch 800 corresponding to the pattern 802 of the wall of the washing chamber.

The frame 810 may include an outlet inlet 815 provided to allow water or air to flow in or out of the storage space 130 of the pouch 800. Specifically, the outlet 815 may be provided on the outer wall 811 of the frame 810. In addition, the pouch 800 may be attached to the outside of at least one wall of the washing chamber so that the outlet inlet 815 is located below, and the water supply and drain pipe may be connected to the outlet inlet 815 of the pouch 800.

The frame 810 may include an overflow outlet 816 provided to recover water overflowed to the washing chamber when the storage space 130 of the pouch 800 overflows. In detail, an overflow outlet 816 may be provided on the outer wall 811 of the frame 810. In addition, the pouch 800 may be attached to the outside of at least one wall of the washing chamber so that the overflow outlet 816 is located on the upper side, and the overflow pipe 152 at the overflow outlet 816 of the pouch 800. , 153 and 154 may be connected.

The dishwasher according to another embodiment of the present invention may further include a pouch cover that can prevent damage to the pouch.

The pouch cover 830 may be disposed to surround the pouch 800 on the outside of the pouch 800 and may be mounted on at least one wall of the washing room. The pouch cover 830 may include a pouch accommodating part 831 provided to accommodate the pouch 800 and a mounting part 832 provided to be mounted on at least one wall of the washing room.

In addition, the pouch cover 830 may include a groove 833 provided to allow the outlet inlet 815 or the overflow outlet 816 of the pouch 800 to be exposed to the outside of the pouch cover 830. The groove 833 may be provided in a form in which a portion of the mounting portion 832 and the pouch accommodating portion 831 are cut out. Since the grooves 833 are also provided in the mounting portion 832, the pouch cover 830 is attached to the outside of the at least one wall of the washing chamber after the pouch 800 is attached to the outside of the at least one wall of the washing chamber. It can be easily mounted to surround the (800).

The pouch cover 830 may be formed of various materials such as a metal material and a resin material, and may be mounted on at least one wall of the washing room in various ways such as welding, bonding, and fusion.

The scope of the invention is not limited to only the specific embodiments described above. Various other embodiments that can be modified or modified by those skilled in the art without departing from the spirit and spirit of the present invention as defined in the claims will be within the scope of the present invention.

Claims

A washing chamber whose front face is open and surrounded by a left wall, a right wall, an upper wall, a lower wall and a rear wall; And

And an outer wall spaced apart from at least one of the walls of the washing room.
The method of claim 1,

And a storage space for water or air formed between the at least one wall and the outer wall of the washing chamber.
The method of claim 1,

And at least one wall of the washing chamber and the junction of the outer wall are sealed.
The method of claim 3,

The at least one wall and the outer wall of the washing chamber is formed of at least one of a metal material and a resin material,

And the at least one wall and the outer wall of the washing chamber are joined by at least one of welding, heat fusion and adhesion.
The method of claim 2,

And a partition for dividing the storage space to partially fill the storage space with water or air.
The method of claim 1,

And a pattern formed on the at least one wall or the outer wall of the washing chamber to maintain a constant distance between the at least one wall of the washing chamber and the outer wall.
The method of claim 1,

And a spacer connecting the at least one wall and the outer wall of the washing chamber to maintain a constant distance between the at least one wall and the outer wall of the washing chamber.
The method of claim 1,

And a rib between the at least one wall of the washing chamber and the outer wall such that the distance between the at least one wall of the washing chamber and the outer wall is kept constant.
The method of claim 2,

The dishwasher tub further comprises an overflow tube provided to be recovered to the washing chamber when the storage space overflows.
The method of claim 9,

And a check valve provided in the overflow pipe to allow only flow from the storage space to the washing chamber.
The method of claim 9,

A tub for a dish washer provided with a filter on the upper wall of the washing chamber to which the overflow pipe is connected to prevent foreign substances from entering the overflow tube.
The method of claim 1,

And a blocking member provided between the at least one wall and the outer wall of the washing room, the blocking member capable of reducing vibration and noise.
The method of claim 12,

And the blocking member includes a dustproof member coated on the at least one wall of the washing chamber.
The method of claim 12,

The blocking member is a tub for a dishwasher including an air cap provided on the outer wall.
The method of claim 12,

The blocking member is a tub for a dishwasher including a heat insulating member coated on the outer wall.