WO2009008828A1 - Dish washer provided with a drying system - Google Patents
Dish washer provided with a drying system Download PDFInfo
- Publication number
- WO2009008828A1 WO2009008828A1 PCT/SE2008/050851 SE2008050851W WO2009008828A1 WO 2009008828 A1 WO2009008828 A1 WO 2009008828A1 SE 2008050851 W SE2008050851 W SE 2008050851W WO 2009008828 A1 WO2009008828 A1 WO 2009008828A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- inlet
- duct
- air
- evacuation
- fan
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/48—Drying arrangements
- A47L15/488—Connections of the tub with the ambient air, e.g. air intake or venting arrangements
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4287—Temperature measuring or regulating arrangements
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/48—Drying arrangements
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
- A47L15/0021—Regulation of operational steps within the washing processes, e.g. optimisation or improvement of operational steps depending from the detergent nature or from the condition of the crockery
- A47L15/0034—Drying phases, including dripping-off phases
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
- A47L2501/11—Air heaters
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
- A47L2501/12—Air blowers
Definitions
- the present invention relates to a dishwasher provided with a drying system according to the preamble to claim 1.
- the object of the present invention is to provide a dishwasher having a drying system which gives a more effective drying and hence a shorter program time.
- fig. 1 is a schematically shown perspective view of a dishwasher provided with a drying system according to the invention
- fig. 2 is a schematically shown side view of a dishwasher provided with the drying system according to the invention
- fig. 3 is a schematically shown front view of a dishwasher provided with the drying system according to the invention.
- fig. 4 is a perspective view of an inlet unit belonging to the drying system according to the invention.
- fig. 5 and 6 show different partial views of the inlet unit.
- a dishwasher provided with a drying system according to the invention.
- the dishwasher is constructed with a container 1 which can be opened to the front by lowering of a door 2, which normally, i.e. in the closed state, covers a container opening 3 intended for loading of the wash items 5.
- the door is usually pivotably connected to the container by means of hinges in the vicinity of the lower portion of the door.
- the container 1 encloses a washing chamber 4 in which the wash items 5 are placed in pull-out baskets 6, 7 for cleaning according to a chosen program for, essentially, washing, rinsing and drying.
- the baskets are two in number, a lower basket 6 and an upper basket 7, but can vary in number and function, for instance there can be just one or, alternatively, three or more on two or more levels, supplemented by one or more special baskets, such as cutlery baskets.
- the washing can be realized in a conventional manner by spraying with hot, detergent-containing water and rinsing with hot water.
- a sprinkling system is present, having rotary sprinkler arms, usually one at the top beneath the upper basket and one at the bottom beneath the lower basket, possibly supplemented by fixed sprinkler arms for selected zones.
- the container 1 forms the main part of a dishwasher housing standing on two pairs of legs 8, 9, a front pair and a rear pair.
- the container is box- shaped and has two mutually opposing parallel side walls 10, 11, a rear wall 12, a top part 13 and a bottom part 14. As a result of the legs, a space 15 is formed beneath the bottom part, in which various machine elements, such as strainer, pumps, hoses, etc., are housed.
- a detachable base plate 16 screens off the machine space to the front.
- the drying system according to the invention is made up of an air inlet unit 17, for the forced, controlled air injection of heated external air into the washing chamber 4, and an interacting air evacuation unit 18, for the evacuation of air from the washing chamber to the environment.
- the air inlet unit 17 extends from the machine space 15 on the underside 19 of the bottom part 14 toward a lower edge 20, rounds this and extends a little way up along the outside 21 of one of the side walls.
- the structure of the inlet unit can best be seen from fig. 4, 5 and 6 and, in the example, is a rigid, coherent unit made of, for example, hard plastic and forms with its enclosing walls essentially an inlet duct 22 having an outer inlet end 23, forming an inlet opening for air from the environment, and an inner inlet end 24, forming an opening for the injection of air into the washing chamber 4.
- the inlet unit incorporates an inlet fan 25, which is integrated with the inlet duct 22, i.e. the interior of the fan housing 26, in the example, is in direct open communication with the inlet duct. It might be said that the fan sits in the inlet duct or the outer end thereof.
- the fan housing 26 is fixedly mounted on the underside 19 of the bottom part 14.
- the fan in the example, being of the radial fan type, having a blade wheel 27 or an impeller, driven by an electric motor 28, and upwardly and downwardly directed inlet openings 29, 30 for the admission of air from the environment, i.e. the machine space 15 which is filled with air from the environment outside the dishwasher.
- the fan 25 is mounted at some distance from the underside 19 of the bottom part 14, so that even the topmost of the outer inlet openings can suck in air.
- the interior of the fan housing 26 forms a duct portion 31 of the inlet duct 22 which has a substantially flat or horizontal extent, i.e. with a substantially horizontal flow direction for the inlet flow.
- the inlet unit 17 also incorporates a heating element 32, which is fitted in the inlet duct 22 and, in the example, is constructed as a flow-through electrical resistance battery for controlled heating of the through-flowing inlet air.
- the control system can, on the one hand, be a thermostat control and, on the other hand, a chosen connection by manual activation, or coupled to a chosen program.
- the heating element 32 is electrically driven of the PTC element type (PTC - Positive Temperature Control) having a resistance which increases with increasing temperature and thus gives a built-in automatic power regulation in dependence on, inter alia, the chosen flow velocity, which can therefore be varied.
- PTC element type PTC - Positive Temperature Control
- an overheating protection in the form of a cutout at a certain maximum temperature is also included.
- the heating element 32 is situated such that it connects to the fan housing 26 and is situated close to the end of the flat duct portion 31 , which, after the heating element, passes into a curved duct portion 33 extending around the outside of the rounded edge portion 20 of the container.
- the curved duct portion passes into an upright or substantially vertical duct portion 34, which extends a little way upward on the outside of one of the side walls 10 and which therefore creates a substantially vertical flow direction of the inlet flow.
- the upright duct portion 34 of the inlet unit 17 passes at the top into a duct portion 35, which is curved by an angle of about 180 degrees and is situated on the outside 21 of the side wall 10, see fig. 1 , 2 and 4, and which turns downward in the flow direction of the inlet air, see flow arrow 49.
- the closing end of the curved duct portion 35 has an arc-shaped bottom edge 50, which extends along the lower edge 51 of a circular cutout 36 in the side wall 10 of the container.
- the inlet duct 22 is led through the side wall into the washing chamber 4 of the container 1 , a liquid seal against the escape of dishwasher liquid being arranged around the cutout.
- the inlet duct 22 has over the greater part of its extent a very flat construction of relatively large width, viewed horizontally along the plane of the side wall 10, and low duct height for accommodation within the modular dimension of the machine.
- the inlet duct 22 has incrementally increased height and extends into the container 1 with its inner inlet end 24.
- the cutout 36 has an area which markedly exceeds the cross-sectional area of the inlet duct 22, with a transverse dimension which substantially corresponds to the width of the inlet duct before the lead-through and, in the case of a circular cutout, a corresponding height.
- the inlet end 24 is configured as a nozzle 37 or mouthpiece, which directs the inlet flow of the air in a chosen direction in the container, see flow arrows 52, 53 in fig. 2.
- the nozzle 37 as can be seen from fig. 4, is configured in the example as an incrementally widened portion of the inlet duct with its opening 24 directed downward and in a slot shape, slightly conically widened in the downward direction.
- a condensation barrier for condensed air is formed, so that condensation can run downward and out through drainage holes 54, situated in the bottom 55 of the inlet unit 17, after the heating element 32, thereby affording protection against moisture from within the interior of the machine.
- the inlet unit 17 is complete with electric connectors 56, 57 for, on the one hand, an electrical voltage feed to the PTC element and, on the other hand, an electrical voltage feed to the inlet fan 25.
- the electric connector 56 for the PTC element 32 sits, in the example, directly on the element and extends through holes 58 in a widened portion 59 in the duct wall, which forms a holder for the heating element.
- the electrical connector 57 for the inlet fan 25 is fitted to the fan housing 26.
- the air evacuation unit 18 is shown schematically in fig. 1 , 2 and 3 and essentially consists of an evacuation duct 38 and an evacuation fan 39 in the duct for driving the air from the interior of the container 1 , i.e. the washing chamber, to the environment.
- the evacuation duct At its inner end, the evacuation duct has an inner opening 40, which is situated relatively high up in the washing chamber and at a relatively large distance from the inner end 24 of the inlet duct 22.
- the evacuation duct has an inlet opening, which is lowly situated.
- the evacuation unit 18 is advantageously arranged in a known manner in the door 2 of the dishwasher, with the inner opening 40 placed high up in the door on the inside of the inner wall 42 of the door.
- the evacuation duct 38 extends downward in the interspace 43 between the inner wall and the outer wall 44 of the door and emerges in the bottom of the door with an outlet opening 45 at its outer end 41, an opening in the lower edge 46 of the door ensuring the discharge of the air.
- the evacuation fan 39 is expediently situated in the top of the duct 38 and can also be designed to suck air from the interspace in the door in order to mix drier air in with the evacuation air from the dishwasher and thus reduce the moisture content in the outlet air.
- the evacuation fan too, is controlled, for example program- controlled or sensor-controlled.
- the inlet fan 25, as well as the evacuation fan 39 has relatively high capacity, for example 20-25 m/min, and that the heating element 32 has relatively high power, for example 400 W.
- the air inlet 24 is advantageously directed downward, i.e. not upward toward the inner evacuation opening, so the air flow makes detours within the washing chamber, more specifically is directed down toward or beneath the lower basket containing wash items, sweeps round this and flows onward and upward through the upper basket and sweeps round the wash items thereof.
- the water on the surface of the wash items is hereupon vaporized by a constant supply of warm air.
- the air current with the higher moisture content is then evacuated through the evacuation unit due to the local underpressure which is created in the evacuation duct of the evacuation fan 39 on the suction side thereof, i.e. in front of this latter.
- the drying phase in the washing program is normally a concluding part which is automatically started once the rinsing is completed.
- the drying phase can either be pure air exchange with air of ambient temperature, with the inlet fan and evacuation fan 25, 39 in operation for a predetermined time, or with the heating element switched on for all or part of the time for the injection of warm or hot air.
- the control can in both cases be realized in interaction with sensors, such as thermostats and/or moisture sensors.
- the fans can be controlled either with an on/off control or with a speed control.
- the system can advantageously be used to heat up plates, serving dishes, etc., which can be rapidly heated by the circulation of heated air.
- the control is in this case most easily realized with a special heating program.
- the inlet unit can be directed rearward and can emerge in the rear wall.
- a plurality of inlet units and outlet units can be present, for example an inlet unit which emerges in each of the side walls or in combination with a unit in the rear wall. It is here important to control the air currents so that they interact in the washing chamber.
- the inlet fan it is also conceivable for the inlet fan to be placed behind the dishwasher, but what is consistent is that the inlet fan is expediently positioned and that the inner opening of the inlet is expediently positioned for the air flow, irrespective of the placement of the fan.
- the drying system can be combined with conventional drying using radiant heat and convection heat from heating elements in the bottom of the washing chamber.
Landscapes
- Washing And Drying Of Tableware (AREA)
Abstract
A dishwasher provided with a drying system for controlled drying of wash items by forced air exchange in the washing chamber of the machine. The drying system incorporates an evacuation duct (38) for the evacuation of air from the washing chamber to the environment by means of an evacuation fan, and an inlet duct for the admission of an air flow from the environment to the washing chamber. This inlet duct extends along the outside of any one of the side walls (10, 11) or the rear wall (12) from an outer inlet end and through a cutout (36) in the respective wall and emerges with an inner inlet end on the inside of the respective wall in the washing chamber. Adjacent to the inlet duct there are disposed a controllable inlet fan and a heating element for preheating of the inlet air flow. Hence the washing chamber can be flowed through by air through both forced admission of air with selectable temperature and forced evacuation of the air. The inlet duct, the inlet fan and the heating element form a substantially L-shaped inlet unit of low duct height in relation to its duct width. The cutout (36) has an area which markedly exceeds the cross-sectional area of the inlet duct, whereby the lead-through laterally displaces the inlet duct incrementally, but essentially creates a continuous flow direction downward.
Description
DISHWASHER PROVIDED WITH A DRYING SYSTEM
TECHNICAL FIELD
The present invention relates to a dishwasher provided with a drying system according to the preamble to claim 1.
BACKGROUND ART
Through US 4,188,732, for example, it is previously known to use a fan to produce a forced air flow through the washing chamber in the dishwasher. In the known system, an inlet fan is arranged with its inner inlet opening in the bottom wall of the washing chamber. Even though the opening is situated at a certain height above the bottom, there is a risk of wash water running down beneath the machine in specific conditions, such as in heavy foaming. Furthermore, there is no active evacuation, i.e. fan, on the outlet side to evacuate the air in the washing chamber.
DISCLOSURE OF INVENTION
The object of the present invention is to provide a dishwasher having a drying system which gives a more effective drying and hence a shorter program time.
The above object is achieved by means of the dishwasher according to the invention, the characteristics of which emerge from the following claim 1.
BRIEF DESCRIPTION OF DRAWINGS
The invention will be described below on the basis of an example with reference to the appended drawings, in which:
fig. 1 is a schematically shown perspective view of a dishwasher provided with a drying system according to the invention,
fig. 2 is a schematically shown side view of a dishwasher provided with the drying system according to the invention,
fig. 3 is a schematically shown front view of a dishwasher provided with the drying system according to the invention,
fig. 4 is a perspective view of an inlet unit belonging to the drying system according to the invention,
fig. 5 and 6 show different partial views of the inlet unit.
MODE(S) FOR CARRYING OUT THE INVENTION
In fig. 1 , 2 and 3 is shown a dishwasher provided with a drying system according to the invention. The dishwasher is constructed with a container 1 which can be opened to the front by lowering of a door 2, which normally, i.e. in the closed state, covers a container opening 3 intended for loading of the wash items 5. The door is usually pivotably connected to the container by means of hinges in the vicinity of the lower portion of the door. The container 1 encloses a washing chamber 4 in which the wash items 5 are placed in pull-out baskets 6, 7 for cleaning according to a chosen program for, essentially, washing, rinsing and drying. In the example the baskets are two in number, a lower basket 6 and an upper basket 7, but can vary in number and function, for instance there can be just one or, alternatively, three or more on two or more levels, supplemented by one or more special baskets, such as cutlery baskets. In principle, the washing can be realized in a conventional manner by spraying with hot, detergent-containing water and rinsing with hot water. To this end, a sprinkling system is present, having rotary sprinkler arms, usually one at the top beneath the upper basket and one at the bottom beneath the lower basket, possibly supplemented by fixed sprinkler arms for selected zones.
The container 1 forms the main part of a dishwasher housing standing on two pairs of legs 8, 9, a front pair and a rear pair. The container is box- shaped and has two mutually opposing parallel side walls 10, 11, a rear wall 12, a top part 13 and a bottom part 14. As a result of the legs, a space 15 is formed beneath the bottom part, in which various machine elements, such as strainer, pumps, hoses, etc., are housed. A detachable base plate 16 screens off the machine space to the front.
The drying system according to the invention is made up of an air inlet unit 17, for the forced, controlled air injection of heated external air into the washing chamber 4, and an interacting air evacuation unit 18, for the evacuation of air from the washing chamber to the environment. The air inlet unit 17 extends from the machine space 15 on the underside 19 of the bottom part 14 toward a lower edge 20, rounds this and extends a little way up along the outside 21 of one of the side walls.
The structure of the inlet unit can best be seen from fig. 4, 5 and 6 and, in the example, is a rigid, coherent unit made of, for example, hard plastic and forms with its enclosing walls essentially an inlet duct 22 having an outer inlet end 23, forming an inlet opening for air from the environment, and an inner inlet end 24, forming an opening for the injection of air into the washing chamber 4. The inlet unit incorporates an inlet fan 25, which is integrated with the inlet duct 22, i.e. the interior of the fan housing 26, in the example, is in direct open communication with the inlet duct. It might be said that the fan sits in the inlet duct or the outer end thereof. In the example, the fan housing 26 is fixedly mounted on the underside 19 of the bottom part 14. the fan, in the example, being of the radial fan type, having a blade wheel 27 or an impeller, driven by an electric motor 28, and upwardly and downwardly directed inlet openings 29, 30 for the admission of air from the environment, i.e. the machine space 15 which is filled with air from the environment outside the dishwasher. The fan 25 is mounted at some distance from the underside 19 of the bottom part 14, so that even the topmost of the outer
inlet openings can suck in air. In the example, the interior of the fan housing 26 forms a duct portion 31 of the inlet duct 22 which has a substantially flat or horizontal extent, i.e. with a substantially horizontal flow direction for the inlet flow.
The inlet unit 17 also incorporates a heating element 32, which is fitted in the inlet duct 22 and, in the example, is constructed as a flow-through electrical resistance battery for controlled heating of the through-flowing inlet air. The control system can, on the one hand, be a thermostat control and, on the other hand, a chosen connection by manual activation, or coupled to a chosen program. Advantageously, the heating element 32 is electrically driven of the PTC element type (PTC - Positive Temperature Control) having a resistance which increases with increasing temperature and thus gives a built-in automatic power regulation in dependence on, inter alia, the chosen flow velocity, which can therefore be varied. Advantageously, an overheating protection in the form of a cutout at a certain maximum temperature is also included. In the example, the heating element 32 is situated such that it connects to the fan housing 26 and is situated close to the end of the flat duct portion 31 , which, after the heating element, passes into a curved duct portion 33 extending around the outside of the rounded edge portion 20 of the container. The curved duct portion passes into an upright or substantially vertical duct portion 34, which extends a little way upward on the outside of one of the side walls 10 and which therefore creates a substantially vertical flow direction of the inlet flow.
The upright duct portion 34 of the inlet unit 17 passes at the top into a duct portion 35, which is curved by an angle of about 180 degrees and is situated on the outside 21 of the side wall 10, see fig. 1 , 2 and 4, and which turns downward in the flow direction of the inlet air, see flow arrow 49. The closing end of the curved duct portion 35 has an arc-shaped bottom edge 50, which extends along the lower edge 51 of a circular cutout 36 in the side wall 10 of the container. Through the cutout 36, the inlet duct 22 is led through the side
wall into the washing chamber 4 of the container 1 , a liquid seal against the escape of dishwasher liquid being arranged around the cutout. The inlet duct 22 has over the greater part of its extent a very flat construction of relatively large width, viewed horizontally along the plane of the side wall 10, and low duct height for accommodation within the modular dimension of the machine. At the lead-through through the cutout 36, the inlet duct 22 has incrementally increased height and extends into the container 1 with its inner inlet end 24. The cutout 36 has an area which markedly exceeds the cross-sectional area of the inlet duct 22, with a transverse dimension which substantially corresponds to the width of the inlet duct before the lead-through and, in the case of a circular cutout, a corresponding height. As a result of the enlarged duct height in the lead-through, a substantially continuous flow direction downward can be created, despite the incremental lateral displacement of the inlet duct into the washing chamber 4. The inlet end 24 is configured as a nozzle 37 or mouthpiece, which directs the inlet flow of the air in a chosen direction in the container, see flow arrows 52, 53 in fig. 2. The nozzle 37, as can be seen from fig. 4, is configured in the example as an incrementally widened portion of the inlet duct with its opening 24 directed downward and in a slot shape, slightly conically widened in the downward direction. Through turning of the flow direction in the curved duct portion, a condensation barrier for condensed air is formed, so that condensation can run downward and out through drainage holes 54, situated in the bottom 55 of the inlet unit 17, after the heating element 32, thereby affording protection against moisture from within the interior of the machine. The inlet unit 17 is complete with electric connectors 56, 57 for, on the one hand, an electrical voltage feed to the PTC element and, on the other hand, an electrical voltage feed to the inlet fan 25. The electric connector 56 for the PTC element 32 sits, in the example, directly on the element and extends through holes 58 in a widened portion 59 in the duct wall, which forms a holder for the heating element. In the example, the electrical connector 57 for the inlet fan 25 is fitted to the fan housing 26.
The air evacuation unit 18 is shown schematically in fig. 1 , 2 and 3 and essentially consists of an evacuation duct 38 and an evacuation fan 39 in the duct for driving the air from the interior of the container 1 , i.e. the washing chamber, to the environment. At its inner end, the evacuation duct has an inner opening 40, which is situated relatively high up in the washing chamber and at a relatively large distance from the inner end 24 of the inlet duct 22. At its outer end 41 the evacuation duct has an inlet opening, which is lowly situated. The evacuation unit 18 is advantageously arranged in a known manner in the door 2 of the dishwasher, with the inner opening 40 placed high up in the door on the inside of the inner wall 42 of the door. The evacuation duct 38 extends downward in the interspace 43 between the inner wall and the outer wall 44 of the door and emerges in the bottom of the door with an outlet opening 45 at its outer end 41, an opening in the lower edge 46 of the door ensuring the discharge of the air. The evacuation fan 39 is expediently situated in the top of the duct 38 and can also be designed to suck air from the interspace in the door in order to mix drier air in with the evacuation air from the dishwasher and thus reduce the moisture content in the outlet air. The evacuation fan, too, is controlled, for example program- controlled or sensor-controlled.
By means of the above-described drying system, a high-grade effective drying is obtained by the forced air exchange which is obtained with the active injection of preheated air through the inlet unit and an air evacuation in balance with the injection. Through balance between injection and evacuation, excess pressure in the washing container, and hence leakage into the electronics or out into the kitchen fixtures, is avoided. It is advantageous that the inlet fan 25, as well as the evacuation fan 39, has relatively high capacity, for example 20-25 m/min, and that the heating element 32 has relatively high power, for example 400 W. As a result, a strong air exchange can be obtained, at the same time as the inlet air can be given a large heat content, for example at the level of 95 degrees C in the inlet duct, so that the drying is not dependent on accumulated heat in the
wash items due to rinsing in water at high temperature. The drying system copes without difficulty with wash items of low thermal capacity, such as plastics objects.
As is shown with flow arrows 52, 53 in fig. 1 and 2, the air inlet 24 is advantageously directed downward, i.e. not upward toward the inner evacuation opening, so the air flow makes detours within the washing chamber, more specifically is directed down toward or beneath the lower basket containing wash items, sweeps round this and flows onward and upward through the upper basket and sweeps round the wash items thereof. The water on the surface of the wash items is hereupon vaporized by a constant supply of warm air. The air current with the higher moisture content is then evacuated through the evacuation unit due to the local underpressure which is created in the evacuation duct of the evacuation fan 39 on the suction side thereof, i.e. in front of this latter.
The drying phase in the washing program is normally a concluding part which is automatically started once the rinsing is completed. The drying phase can either be pure air exchange with air of ambient temperature, with the inlet fan and evacuation fan 25, 39 in operation for a predetermined time, or with the heating element switched on for all or part of the time for the injection of warm or hot air. The control can in both cases be realized in interaction with sensors, such as thermostats and/or moisture sensors. The fans can be controlled either with an on/off control or with a speed control.
Even though the main function is the drying of wash items, the system can advantageously be used to heat up plates, serving dishes, etc., which can be rapidly heated by the circulation of heated air. The control is in this case most easily realized with a special heating program.
The invention is not limited to the above-described examples shown in the drawings, but can be varied within the scope of the following claims. For
example, the inlet unit can be directed rearward and can emerge in the rear wall. In order to increase the air quantity, a plurality of inlet units and outlet units can be present, for example an inlet unit which emerges in each of the side walls or in combination with a unit in the rear wall. It is here important to control the air currents so that they interact in the washing chamber. It is also conceivable for the inlet fan to be placed behind the dishwasher, but what is consistent is that the inlet fan is expediently positioned and that the inner opening of the inlet is expediently positioned for the air flow, irrespective of the placement of the fan. The drying system can be combined with conventional drying using radiant heat and convection heat from heating elements in the bottom of the washing chamber.
Claims
1. A dishwasher provided with a drying system for controlled drying of wash items by forced air exchange in the washing chamber (4) of the machine, which has two opposing side walls (10, 11), a rear wall (12), a top part (13), a bottom part (14), an opening (3) for loading of the wash items, and a door (2) for closure of the opening, wherein the drying system incorporates an evacuation duct (38) for the evacuation of air from the washing chamber to the environment by means of an evacuation fan (39), and an inlet duct (22) for the admission of an air flow from the environment to the washing chamber, wherein the inlet duct (22) extends along the outside of any one of the side walls (10, 11) or the rear wall (12) from an outer inlet end (23) and through a cutout (36) in the respective wall and emerges with an inner inlet end (24) on the inside of the respective wall in the washing chamber, and wherein adjacent to the inlet duct there are disposed an inlet fan (25) and a heating element (32) for preheating of the inlet air flow, whereby the washing chamber can be flowed through by air through both the forced admission of air and the forced evacuation of the air, wherein the inlet fan (25) is situated in a space (15) beneath the bottom part (14) and the inlet duct (22) extends beneath the bottom part from the inlet fan and toward the outside of any one of the side walls (10, 11) or the rear wall (12), wherein the inlet duct (22) extends a little way upward on the outside of any one of the side walls (10, 11) or the rear wall (12) and turns downward with a curved duct portion (35) before the lead-through through the cutout (36), characterized in that the inlet duct (22), the inlet fan (25) and the heating element (32) form a substantially L-shaped inlet unit (17) of low duct height in relation to its duct width, so that the inlet unit, including in its portion on the outside of the side wall (10), is located within the external dimensions of the machine, and in that the cutout (36) has an area which markedly exceeds the cross-sectional area of the inlet duct, whereby the lead-through laterally displaces the inlet duct (24) incrementally, but essentially creates a continuous flow direction downward.
2. The dishwasher as claimed in claim 1 , characterized in that the cutout (36) in the wall (10) is circular.
3. The dishwasher as claimed in claim 2, characterized in that the inner inlet end (24) is situated in a nozzle (37) which is situated within the cutout (36) and which directs the air current from the inlet end downward along the inside of the wall (10-12) in which the nozzle is situated, away from the location for the inner opening (40) of the evacuation duct (18).
4. The dishwasher as claimed in claim 1 , characterized in that the inlet fan (25) is controllable, and in that the heating element (32) is designed for controlled heating of through-flowing inlet air.
5. The dishwasher as claimed in claim 4, characterized in that the heating element (32) is an open unit, which is fixedly fitted in the inlet duct (22) and is designed to be flowed through by the inlet flow from the inlet fan (25).
6. The dishwasher as claimed in claim 5, characterized in that the heating element (32) is electrical of the PTC element type, with power control in dependence on the temperature, and hence the velocity, of the air flow.
7. The dishwasher as claimed in claim 6, characterized in that drainage holes (54) for the discharge of condensation water are disposed in the bottom (55) of the inlet unit (17) after the heating element (32).
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08779428.5A EP2173229B1 (en) | 2007-07-09 | 2008-07-08 | Dish washer provided with a drying system |
DK08779428.5T DK2173229T3 (en) | 2007-07-09 | 2008-07-08 | Dishwasher with drying system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0701646-2 | 2007-07-09 | ||
SE0701646A SE531447C2 (en) | 2007-07-09 | 2007-07-09 | Dishwasher equipped with a drying system |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009008828A1 true WO2009008828A1 (en) | 2009-01-15 |
Family
ID=40228845
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE2008/050851 WO2009008828A1 (en) | 2007-07-09 | 2008-07-08 | Dish washer provided with a drying system |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2173229B1 (en) |
DK (1) | DK2173229T3 (en) |
SE (1) | SE531447C2 (en) |
WO (1) | WO2009008828A1 (en) |
Cited By (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110186094A1 (en) * | 2010-02-01 | 2011-08-04 | Samsung Electronics Co., Ltd. | Dishwasher |
EP2471432A2 (en) | 2010-12-23 | 2012-07-04 | Indesit Company, S.p.A. | Method for detecting a rinse agent in a rinsing liquid of a household washing machine, in particular a dishwasher and washing machine thereof |
ITTO20110838A1 (en) * | 2011-09-20 | 2013-03-21 | Indesit Co Spa | DISHWASHER MACHINE WITH DRYING SYSTEM |
WO2013042036A1 (en) | 2011-09-20 | 2013-03-28 | Indesit Company S.P.A. | Dishwashing machine with drying system |
CN103156564A (en) * | 2011-12-19 | 2013-06-19 | Lg电子株式会社 | Control method for dish washer |
WO2013090155A1 (en) * | 2011-12-15 | 2013-06-20 | Premark Feg L.L.C. | Commercial dishwasher with a fresh-air drying system, and method for operating a dishwasher of this kind |
EP2636357A1 (en) * | 2012-03-06 | 2013-09-11 | Miele & Cie. KG | Dishwasher, in particular household dishwasher |
WO2015107474A1 (en) * | 2014-01-17 | 2015-07-23 | Indesit Company S.P.A. | Household dishwashing machine |
CN105078396A (en) * | 2014-05-07 | 2015-11-25 | 美的集团股份有限公司 | Dishwasher |
EP3020319A1 (en) | 2014-11-13 | 2016-05-18 | Indesit Company S.p.A. | Household dish-washing machine |
CN107981821A (en) * | 2017-12-29 | 2018-05-04 | 珠海格力电器股份有限公司 | Induced draught system and dish-washing machine |
CN107997721A (en) * | 2017-12-29 | 2018-05-08 | 珠海格力电器股份有限公司 | Induced draught system and dish-washing machine |
CN108567394A (en) * | 2018-06-21 | 2018-09-25 | 佛山市顺德区美的洗涤电器制造有限公司 | Air draft component and dish-washing machine for dish-washing machine |
CN108618733A (en) * | 2018-06-21 | 2018-10-09 | 佛山市顺德区美的洗涤电器制造有限公司 | Air-out component and dish-washing machine |
CN108618732A (en) * | 2018-06-21 | 2018-10-09 | 佛山市顺德区美的洗涤电器制造有限公司 | Air-out component and dish-washing machine |
CN108670156A (en) * | 2018-06-21 | 2018-10-19 | 佛山市顺德区美的洗涤电器制造有限公司 | Dish-washing machine |
US10136793B2 (en) | 2014-07-23 | 2018-11-27 | Whirlpool Corporation | Dishwasher |
EP3307133A4 (en) * | 2015-06-11 | 2019-01-30 | LG Electronics Inc. | Heating circulation type drying module of dishwasher |
CN113017525A (en) * | 2021-04-22 | 2021-06-25 | 珠海格力电器股份有限公司 | Dish washing machine |
WO2023013912A3 (en) * | 2021-08-03 | 2023-03-30 | 엘지전자 주식회사 | Dishwasher |
US11684235B2 (en) * | 2017-06-23 | 2023-06-27 | Gree Electric Appliances, Inc. Of Zhuhai | Air exhausting device for kitchenware, dishwasher, and kitchenware |
EP4205623A1 (en) * | 2021-12-31 | 2023-07-05 | LG Electronics Inc. | Dishwasher |
US20230284865A1 (en) * | 2022-03-08 | 2023-09-14 | Haier Us Appliance Solutions, Inc. | Dishwashing appliance vent conduit |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108852242A (en) * | 2018-06-21 | 2018-11-23 | 佛山市顺德区美的洗涤电器制造有限公司 | Drying device for dish-washing machine and the dish-washing machine with it |
WO2019242240A1 (en) * | 2018-06-21 | 2019-12-26 | 佛山市顺德区美的洗涤电器制造有限公司 | Drying apparatus for dishwasher and dishwasher having same |
US20200100644A1 (en) * | 2018-09-28 | 2020-04-02 | Haier Us Appliance Solutions, Inc. | Dishwasher appliance with a drying system |
WO2020074176A1 (en) * | 2018-10-08 | 2020-04-16 | Arcelik Anonim Sirketi | A dishwasher comprising a heater |
CN109567701B (en) * | 2018-12-07 | 2021-04-02 | 东莞优乐家智能家电有限公司 | Method for quickly washing dishes by dish washing machine and dish washing machine |
KR20210138422A (en) * | 2020-05-12 | 2021-11-19 | 엘지전자 주식회사 | Dishwasher |
CN116940273A (en) * | 2021-04-16 | 2023-10-24 | 三星电子株式会社 | Tableware cleaning machine |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2674249A (en) * | 1951-05-21 | 1954-04-06 | Gen Electric | Air flow controller for dishwashing and drying machines |
JPH0819502A (en) * | 1994-07-06 | 1996-01-23 | Matsushita Electric Ind Co Ltd | Dish washing machine |
EP1721559A1 (en) * | 2005-05-10 | 2006-11-15 | Electrolux Home Products Corporation N.V. | Dish-washing machine |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3038028C2 (en) * | 1980-10-08 | 1983-12-29 | Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart | Dishwasher with a fan for conveying fresh air |
DE60313428T2 (en) * | 2003-02-11 | 2008-01-10 | Whirlpool Corp., Benton Harbor | Dishwasher with drying device |
-
2007
- 2007-07-09 SE SE0701646A patent/SE531447C2/en not_active IP Right Cessation
-
2008
- 2008-07-08 WO PCT/SE2008/050851 patent/WO2009008828A1/en active Application Filing
- 2008-07-08 EP EP08779428.5A patent/EP2173229B1/en not_active Not-in-force
- 2008-07-08 DK DK08779428.5T patent/DK2173229T3/en active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2674249A (en) * | 1951-05-21 | 1954-04-06 | Gen Electric | Air flow controller for dishwashing and drying machines |
JPH0819502A (en) * | 1994-07-06 | 1996-01-23 | Matsushita Electric Ind Co Ltd | Dish washing machine |
EP1721559A1 (en) * | 2005-05-10 | 2006-11-15 | Electrolux Home Products Corporation N.V. | Dish-washing machine |
Non-Patent Citations (1)
Title |
---|
See also references of EP2173229A4 * |
Cited By (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110186094A1 (en) * | 2010-02-01 | 2011-08-04 | Samsung Electronics Co., Ltd. | Dishwasher |
EP2471432A2 (en) | 2010-12-23 | 2012-07-04 | Indesit Company, S.p.A. | Method for detecting a rinse agent in a rinsing liquid of a household washing machine, in particular a dishwasher and washing machine thereof |
ITTO20110838A1 (en) * | 2011-09-20 | 2013-03-21 | Indesit Co Spa | DISHWASHER MACHINE WITH DRYING SYSTEM |
WO2013042036A1 (en) | 2011-09-20 | 2013-03-28 | Indesit Company S.P.A. | Dishwashing machine with drying system |
EP3000377A1 (en) | 2011-09-20 | 2016-03-30 | Indesit Company S.p.A. | Dishwashing machine with drying system |
WO2013090155A1 (en) * | 2011-12-15 | 2013-06-20 | Premark Feg L.L.C. | Commercial dishwasher with a fresh-air drying system, and method for operating a dishwasher of this kind |
CN103156564A (en) * | 2011-12-19 | 2013-06-19 | Lg电子株式会社 | Control method for dish washer |
EP2606804A1 (en) * | 2011-12-19 | 2013-06-26 | LG Electronics, Inc. | Control method for dish washer |
EP2636357A1 (en) * | 2012-03-06 | 2013-09-11 | Miele & Cie. KG | Dishwasher, in particular household dishwasher |
WO2015107474A1 (en) * | 2014-01-17 | 2015-07-23 | Indesit Company S.P.A. | Household dishwashing machine |
EP3998009A1 (en) * | 2014-01-17 | 2022-05-18 | Whirlpool EMEA S.p.A. | Household dishwashing machine |
CN105078396A (en) * | 2014-05-07 | 2015-11-25 | 美的集团股份有限公司 | Dishwasher |
US11259684B2 (en) | 2014-07-23 | 2022-03-01 | Whirlpool Corporation | Dishwasher |
US10595706B2 (en) | 2014-07-23 | 2020-03-24 | Whirlpool Corporation | Dishwasher with air system |
US10136793B2 (en) | 2014-07-23 | 2018-11-27 | Whirlpool Corporation | Dishwasher |
EP3020319A1 (en) | 2014-11-13 | 2016-05-18 | Indesit Company S.p.A. | Household dish-washing machine |
EP3307133A4 (en) * | 2015-06-11 | 2019-01-30 | LG Electronics Inc. | Heating circulation type drying module of dishwasher |
US10568487B2 (en) | 2015-06-11 | 2020-02-25 | Lg Electronics Inc. | Heating circulation type drying module of dishwasher |
US11684235B2 (en) * | 2017-06-23 | 2023-06-27 | Gree Electric Appliances, Inc. Of Zhuhai | Air exhausting device for kitchenware, dishwasher, and kitchenware |
CN107997721A (en) * | 2017-12-29 | 2018-05-08 | 珠海格力电器股份有限公司 | Induced draught system and dish-washing machine |
CN107981821A (en) * | 2017-12-29 | 2018-05-04 | 珠海格力电器股份有限公司 | Induced draught system and dish-washing machine |
WO2019128276A1 (en) * | 2017-12-29 | 2019-07-04 | 格力电器(武汉)有限公司 | Induced draught system and dish-washing machine |
CN108618732B (en) * | 2018-06-21 | 2023-06-30 | 佛山市顺德区美的洗涤电器制造有限公司 | Air outlet assembly and dish washer |
CN108670156A (en) * | 2018-06-21 | 2018-10-19 | 佛山市顺德区美的洗涤电器制造有限公司 | Dish-washing machine |
CN108618732A (en) * | 2018-06-21 | 2018-10-09 | 佛山市顺德区美的洗涤电器制造有限公司 | Air-out component and dish-washing machine |
CN108618733A (en) * | 2018-06-21 | 2018-10-09 | 佛山市顺德区美的洗涤电器制造有限公司 | Air-out component and dish-washing machine |
CN108567394A (en) * | 2018-06-21 | 2018-09-25 | 佛山市顺德区美的洗涤电器制造有限公司 | Air draft component and dish-washing machine for dish-washing machine |
CN108618733B (en) * | 2018-06-21 | 2023-06-30 | 佛山市顺德区美的洗涤电器制造有限公司 | Air outlet assembly and dish washer |
CN108670156B (en) * | 2018-06-21 | 2023-07-28 | 佛山市顺德区美的洗涤电器制造有限公司 | Dish-washing machine |
CN108567394B (en) * | 2018-06-21 | 2024-06-14 | 佛山市顺德区美的洗涤电器制造有限公司 | Exhaust assembly for dish washing machine and dish washing machine |
CN113017525A (en) * | 2021-04-22 | 2021-06-25 | 珠海格力电器股份有限公司 | Dish washing machine |
WO2023013912A3 (en) * | 2021-08-03 | 2023-03-30 | 엘지전자 주식회사 | Dishwasher |
EP4205623A1 (en) * | 2021-12-31 | 2023-07-05 | LG Electronics Inc. | Dishwasher |
US20230284865A1 (en) * | 2022-03-08 | 2023-09-14 | Haier Us Appliance Solutions, Inc. | Dishwashing appliance vent conduit |
Also Published As
Publication number | Publication date |
---|---|
EP2173229A4 (en) | 2010-08-04 |
EP2173229A1 (en) | 2010-04-14 |
DK2173229T3 (en) | 2014-08-11 |
SE531447C2 (en) | 2009-04-07 |
SE0701646L (en) | 2009-01-10 |
EP2173229B1 (en) | 2014-05-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2173229B1 (en) | Dish washer provided with a drying system | |
US11259684B2 (en) | Dishwasher | |
EP3000377B1 (en) | Dishwashing machine with drying system | |
KR101792513B1 (en) | Heating cycle drying module of dishwasher using Fan module and PTC Heater | |
EP2246470B1 (en) | Washer-drier machine | |
AU2010291426B2 (en) | Dishwasher and method for operating a dishwasher | |
US11672403B2 (en) | Wash system for washing appliance | |
KR102384522B1 (en) | Dishwasher | |
CN111278340A (en) | Dish washing machine | |
EP3998009B1 (en) | Household dishwashing machine | |
EP3524127B1 (en) | Dishwasher | |
KR102005441B1 (en) | Dishwasher and method of controlling the same | |
WO2015182485A1 (en) | Cooking device | |
EP0493065B1 (en) | Air flow control for a dishwasher | |
KR102005442B1 (en) | Dishwasher and method of controlling the same | |
JP2002119423A (en) | Humidifier | |
CN219206822U (en) | Cleaning machine | |
CN111295121A (en) | Washing pump and dishwasher including the same | |
CN209932643U (en) | Dish washing machine | |
US20230404359A1 (en) | Dishwasher | |
KR20240050938A (en) | Dishwasher and controlling method of dishwasher | |
KR20230103441A (en) | Dish washer | |
KR20230020230A (en) | Dish washer | |
KR20230020232A (en) | Dish washer | |
JP2013255614A (en) | Dishwasher |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 08779428 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2008779428 Country of ref document: EP |