JP2008113755A - Dishwasher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dishwasher capable of changing to a state capable of visually recognizing the inside a washing tub and a state incapable of visually recognizing it as needed without opening or closing a door body. <P>SOLUTION: The dishwasher is provided with an inner side window part 61a and an outer side window part 62a for visually recognizing dishes housed inside the washing tub, and jets washing water supplied to the washing tub to the dishes. In the dishwasher, the inner side window part 61a is provided with a transmissivity change part where light transmissivity changes, that is, a recessed and projected part 61c formed so as to make the light transmissivity when getting wet higher than the light transmissivity when dried. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a dishwasher provided with a window portion for visually confirming tableware stored in a washing tub and configured to jet water supplied to the tub to the tableware.

A conventional dishwasher includes a washing tub having an opening on the front side for taking in and out dishes. The opening is closed so as to be freely opened and closed by a door body, and the door body is provided with a translucent window portion so that the inside of the cleaning tank can be visually recognized. Moreover, the tableware basket in which tableware is mounted is accommodated in the washing tank, and the heater which heats washing water and the injection nozzle which injects washing water with respect to tableware are arrange | positioned.
In the dishwasher configured as described above, it is possible to visually check how the tableware is soiled or how the washing water sprayed on the tableware is touched from the outside of the washing tub with the door closed.

On the other hand, the dishwasher according to Patent Document 1 includes an upper door body and a lower door body that close the opening. The lower door body is made of a non-translucent member in order to conceal the storage portion where dirty cleaning water accumulates, and the upper door body has a degree of dirt on the tableware or the cleaning water sprayed on the tableware. A translucent window portion is provided that makes it possible to visually recognize the degree of contact.
In the dishwasher configured as described above, the user can visually recognize the degree of stains on the tableware without feeling uncomfortable.
JP 2005-110903 A

However, depending on how the dishwasher is used, dirty dishes may be left in the washing tub for a long time, and the dirty dishes can be seen from the outside for a long time. There was a problem of giving discomfort.
For example, if the tableware used at breakfast is placed in the tableware basket but there is an empty space in the tableware, the user thinks that the tableware used at lunch time will be washed together for power saving and water saving. The used tableware may be left until after lunch. In this case, since the dirty dishes are exposed to the outside of the washing tank until lunch, the user feels uncomfortable.

  This invention is made | formed in view of such a situation, and does not give a user a discomfort without opening and closing a door body by providing the window part with the transmittance | permeability change part from which a light transmittance changes. Furthermore, it aims at providing the dishwasher which can be changed into the state which can visually recognize the inside of a washing tank, and the state which cannot be visually recognized as needed.

  Another object of the present invention is to provide a window with a transmittance changing portion in which irregularities are formed so that the light transmittance when wet becomes higher than the light transmittance when dried, so that the tableware can be It is possible to make it possible to visually check the degree of dirt removal, the degree of washing water hitting the tableware, etc., and the inside of the washing tub can be made invisible during non-washing to prevent the dirty tableware from entering the user's eyes. To provide a dishwasher.

  Another object of the present invention is to provide a dishwasher that includes a nozzle that injects water into the transmittance changing portion of the window portion, so that the window portion can be reliably wetted during cleaning and the inside of the washing tub can be made visible. There is to do.

  Another object of the present invention is a case in which the washing water sprayed is blocked by the tableware by providing the washing tank with a water guide path that guides the water sprayed and adhered to the washing tank to the transmittance changing portion of the window. To provide a dishwasher that can guide and wet the water adhering to the washing tank to the transmittance changing portion, and can make the inside of the washing tank more reliably and stably visible at the time of washing. is there.

  Another object of the present invention is to provide a transmittance changing portion and a heater for drying the tableware, so that the tableware can be dried and the window portion can be dried after the cleaning is completed. It is an object of the present invention to provide a dishwasher that can reliably prevent a dishware that has become invisible and dirty from entering the eyes of the user.

  Another object of the present invention is such that when the temperature rises / falls, the window portion is provided with a transmittance changing portion where the light transmittance increases / decreases, and the water supplied to the cleaning tank is heated by the heater. This makes it possible to visually check the degree of stains on the dishes when the heated water is sprayed, and the degree of contact of the washing water with the dishes. An object of the present invention is to provide a dishwasher that can prevent a user from entering the eyes of the user.

  Another object of the present invention is to provide a window with a transmittance changing portion having a liquid crystal shutter, and when a cleaning pump for injecting water to the tableware is driven, the liquid crystal shutter is opened and the cleaning pump is stopped. If the liquid crystal shutter is closed, regardless of the temperature and wetness of the transmissivity changing part, the tableware is cleaned by the cleaning pump, and the tableware is washed away. A dishwasher that can visually check the condition, etc., and when the washing pump is not in operation, the washing tank is not visible so that dirty dishes can be prevented from entering the user's eyes. Is to provide.

  Another object of the present invention is to arrange the window in the washing tub so that the tableware in the washing tub can be made visible from the window provided in the washing tub when washing, and when not washed It is providing the dishwasher which can make the inside of a tank invisible.

  Another object of the present invention is to arrange the window on a door that closes the opening of the washing tub so that the tableware in the washing tub can be seen from the window provided on the door when washing dishes. An object of the present invention is to provide a dishwasher that can make the inside of a washing tank invisible when it is not washed.

  The dishwasher according to the present invention is provided with a window portion for visually confirming the tableware stored in the washing tub, and the water supplied to the washing tub is sprayed on the tableware in the dishwasher, The window portion includes a transmittance changing portion in which the light transmittance changes.

  In the present invention, since the window portion has a transmittance changing portion where the light transmittance changes, the light transmittance of the transmittance changing portion can be changed as necessary. For example, when water is sprayed on tableware, the light transmittance of the transmittance changing portion can be increased, and when water is not sprayed on the tableware, the light transmittance of the transmittance changing portion can be lowered.

  The dishwasher according to the present invention is characterized in that the transmittance changing portion is provided with irregularities formed so that the light transmittance when wet is higher than the light transmittance when dried.

  In the present invention, when water is jetted onto the tableware, the transmittance changing portion is wetted by the jetted water. The transmittance change part has irregularities formed so that the light transmittance when wet is higher than the light transmittance when dried, so that the inside of the washing tank can be visually confirmed when washing dishes Become. When water is not sprayed and the transmittance changing portion is dry, the light transmittance is low, and the inside of the cleaning tank becomes invisible.

  The dishwasher according to the present invention includes a nozzle for injecting water to the transmittance changing portion.

  In the present invention, the nozzle sprays the water supplied to the cleaning water onto the transmittance changing portion. Accordingly, the window portion is wetted by the jetted water, and the light transmittance is higher than that at the time of drying.

  The dishwasher according to the present invention is characterized in that the washing tub is provided with a water guide path that guides the water sprayed and attached to the washing tub to the transmittance changing portion.

  In the present invention, the water guide path guides the water sprayed and attached to the cleaning tank to the transmittance changing portion. Accordingly, the transmittance change portion is wetted by the jetted water, and the light transmittance becomes higher than that at the time of drying.

  The dishwasher according to the present invention includes a heater for drying the transmittance changing portion and the tableware.

  In the present invention, since the dishwasher includes a heater for drying the window portion and the tableware, the tableware is dried and the window portion is quickly dried after the dishwashing is finished, so that the light transmission of the transmittance changing portion is achieved. The rate can be reduced.

  The dishwasher according to the present invention includes a heater for heating the water supplied to the washing tub, and the transmittance changing portion has a high / low light transmittance when the temperature rises / falls. It is characterized by that.

  In the present invention, since the water heated by the heater is jetted, the temperature of the transmittance changing portion rises. In the transmittance changing portion, when the temperature rises / falls, the light transmittance is higher / lower, that is, the higher the temperature, the higher the light transmittance. Therefore, when water heated by the heater is jetted, the light transmittance of the transmittance changing portion is high, and the inside of the cleaning tank becomes visible. When the water heated by the heater is not jetted, the light transmittance of the transmittance changing portion becomes low, and the inside of the cleaning tank becomes invisible.

  The dishwasher according to the present invention includes a washing pump for injecting water to the tableware, the transmittance changing portion transmits light when the washing pump is driven, and the washing pump is stopped. In this case, a liquid crystal shutter that shields light is provided.

  In the present invention, when the cleaning pump is driven and water is jetted, the liquid crystal shutter constituting the transmittance changing portion transmits light, and when the cleaning pump is stopped and water is not jetted, The liquid crystal shutter blocks light. Therefore, when the water is being sprayed, the inside of the cleaning tank can be visually recognized, and when the water is not sprayed, the inside of the cleaning tank cannot be visually recognized.

  The dishwasher according to the present invention is characterized in that the window portion is arranged in the washing tank.

  In this invention, the window part provided with the transmittance | permeability change part is distribute | arranged to the washing tank. Therefore, it is possible to make the inside of the cleaning tank visible or invisible from the window of the cleaning tank.

  In the dishwasher according to the present invention, the washing tub has an opening for taking in and out of the tableware, includes a door body that closes the opening, and the window portion is disposed on the door body. It is characterized by.

  In this invention, the window part provided with the transmittance | permeability change part is distribute | arranged to the door body which obstruct | occludes the opening part of a washing tank. Therefore, the inside of the cleaning tank can be viewed or cannot be viewed from the window portion of the door.

  According to the present invention, it is possible to change between a state where the inside of the cleaning tank is visible and a state where it is not visible as necessary so as not to give the user unpleasant feeling without opening and closing the door body. .

  ADVANTAGE OF THE INVENTION According to this invention, when the dishes are washed, it is possible to visually check how the dishes are soiled and how the washing water hits the dishes. Can be prevented.

  According to the present invention, it is possible to reliably wet the window during cleaning and make the inside of the cleaning tank visible.

  According to the present invention, even when the sprayed washing water is blocked by the tableware, the water adhering to the washing tank can be guided to the transmittance changing portion and wetted, and the inside of the washing tank can be more reliably washed. And it can be made visible stably.

  According to the present invention, the tableware can be dried and the window portion can be dried after the cleaning is completed, and when the cleaning is not performed, the inside of the cleaning tank is quickly made invisible and the dirty tableware is surely entered into the user's eyes. Can be prevented.

  According to the present invention, it is possible to make it possible to visually check the degree of stains on the dishes when the heated water is jetted, and the degree of contact of the washing water with the dishes, and use the dishes that are made dirty and unvisible when not washed. Can be prevented.

  According to the present invention, regardless of the temperature and wetness of the transmittance changing portion, the tableware can be visually recognized at the time of dishwashing when the washing pump is driven, and the tableware dirty at the time of non-washing when the washing pump is stopped. Can be reliably prevented from entering the eyes of the user.

  ADVANTAGE OF THE INVENTION According to this invention, the tableware in a washing tank can be visually recognized at the time of tableware washing from the window part provided in the washing tank, and the inside of a washing tank can be made invisible at the time of non-washing.

  ADVANTAGE OF THE INVENTION According to this invention, the tableware in a washing tank can be made visible at the time of tableware washing from the window part provided in the door body, and the inside of a washing tank can be made invisible at the time of non-washing.

Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof.
(Embodiment 1)
1 is a schematic side sectional view of a dishwasher according to Embodiment 1 of the present invention, FIG. 2 is a schematic front sectional view of the dishwasher, and FIG. 3 is a schematic front view of the dishwasher. In the figure, reference numeral 2 denotes a substantially rectangular parallelepiped cleaning tank arranged so that a gap is formed inside the housing 1. The casing 1 and the washing tub 2 are formed so that a rectangular opening 21 for taking in and out the tableware A is formed on the front side, and the opening 21 is closed by the upper door body 6 and the lower door body 7. Has been. An operation panel 93 is disposed on the front side of the housing 1 and below the lower door body 7. The operation panel 93 includes a cleaning start button, a cleaning stop button, a cleaning course selection button, and the like.

  The cleaning tank 2 has a substantially rectangular bottom plate 22 inclined downward to the front side with respect to the mounting surface 10 on the floor, and a rear surface substantially perpendicular to the mounting surface 10 at the peripheral portion of the bottom plate 22. A wall 23, a side wall 24, and a front wall 25 are formed, and a top plate 26 is formed at the upper ends of the back wall 23 and the side wall 24. The front side end of the side wall 24 has a vertical surface 21a that is substantially orthogonal to the mounting surface 10 on the floor, and an inclined surface 21b that is inclined from the upper portion of the vertical surface 21a to the rear of the cleaning tank 2. The opening 21 is configured together with the upper end portion and the front side end portion of the top plate 26.

  The top plate 26 is inclined downward toward the front side, and also serves as a water guide path for guiding the cleaning water adhering to the top plate 26 to the upper door body 6.

  A support rail (not shown) that supports the tableware basket 3 on which the tableware A is placed is formed on the side wall 24, and a plurality of injection nozzles that inject cleaning water onto the tableware A placed on the tableware basket 3 are formed on the bottom plate 22. 40 and 40 are juxtaposed in the horizontal direction. Further, a drain outlet 27 is recessed on the front side of the bottom plate 22, and in the vicinity of the inlet of the drain outlet 27 in the side wall 24, the cleaning water is heated in the cleaning process, and the tableware A and the upper door body are dried in the drying process. A heater 5 for drying 6 and the lower door body 7 is provided. Between the bottom plate 22 and the housing 1, a cleaning pump 92 that supplies the cleaning water stored in the drain port 27 to the jet nozzles 40 and 40 and a control unit (not shown) that controls the driving of the cleaning pump 92 are disposed. ing. The cleaning pump 92 can rotate forward and backward, and is configured to discharge cleaning water out of the cleaning tank 2 by rotating in reverse.

  The control unit is composed of, for example, a microcomputer, and is configured to sequentially execute a cleaning process, a rinsing process, and a drying process by controlling the spraying of cleaning water by the cleaning pump 92, heating of the heater 5, and the like.

  More specifically, when the cleaning start button on the operation panel 93 is pressed, the control unit supplies cleaning water to the cleaning tank 2 by opening and closing a water supply valve (not shown). The controller then cleans the tableware A by driving the cleaning pump 92 and starting energization of the heater 5. The cleaning pump 92 pressurizes the cleaning water and supplies it to the spray nozzles 40 and 40 to spray the cleaning water onto the tableware A. The cleaning water sprayed on the tableware A is supplied again to the spray nozzles 40 and 40 through the drain port 27 and the cleaning pump 92 and circulates in the cleaning tank 2. Next, the control unit repeatedly drives the cleaning pump 92 and opens and closes the water supply valve to rinse the tableware A, and after draining the cleaning water, starts energizing the heater 5 to dry the tableware A.

  The upper door body 6 is formed so as to cover the upper half of the opening 21 following the front side end portion of each side wall 24, and is vertically moved by two plate-like upper door support arms 91 (see FIG. 4). It is rotatably supported. A pivot shaft (not shown) projects from the outer side of the both side walls 24 constituting the cleaning tank 2 and on the upper rear portion, and one end side of the upper door support arm 91 is pivotally supported by each pivot shaft.

  FIG. 4 is a schematic enlarged side sectional view of the upper door body 6. The upper door body 6 has an inclined portion 6 a that inclines following the inclined surface 21 b of the side wall 24, and a vertical portion 6 b that continues to the inclined portion 6 a and follows the vertical surface 21 a of the side wall 24.

  The inclined portion 6a includes an inner wall 61 facing the cleaning tank 2 and an outer wall 62 exposed to the outside of the cleaning tank 2, and the inner wall 61 and the outer wall 62 are opposed to each other so that a predetermined gap is generated. A bottom 63 extends from the lower portion of the inner wall 61 toward the outer wall 62, and the lower end of the outer wall 62 is in close contact with the bottom 63. Further, a top portion 64 that covers the upper side of the upper door body 6 is provided at the upper ends of the inner wall 61 and the outer wall 62, and both lateral sides of the upper door body 6 are covered by side portions (not shown) that are continuous with the top portion 64. ing.

Moreover, in order to make the tableware A in the washing tub 2 visible, a translucent inner window portion 61a and an outer window portion 62a each having a substantially rectangular shape are provided at substantially central portions of the inner wall 61 and the outer wall 62, respectively. Non-transparent frame portions 61b and 62b are formed on the periphery of the inner window portion 61a and the outer window portion 62a. The inner window portion 61 a and the outer window portion 62 a have a width substantially the same as the width of the cleaning tank 2 and a predetermined length required for visually confirming the tableware A from the outside of the cleaning tank 2. Further, the inner window portion 61a has a frosted glass-like matte on the cleaning tank 2 side so that the transmittance change portion with variable light transmittance, that is, the light transmittance when wet is higher than the light transmittance when dried. The processed unevenness 61c is formed.
The matted inner window 61a is opaque when the frosted glass is dry, but when the water droplets adhere to the surface or the cellophane tape is applied, the water is adhered to the surface. The inside of the tank 2 can be visually recognized. When the tank 2 is dried, the inside of the cleaning tank 2 cannot be visually recognized.

  The vertical portion 6 b includes a frame 65 that forms the outer shape of the upper door body 6, a reinforcing plate 66 disposed on the front side of the frame 65, and a decorative plate 69 disposed on the further front side of the reinforcing plate 66. . An exhaust port 67 for discharging the steam generated in the drying process is provided on the top of the reinforcing plate 66. An exhaust port cover 68 is provided on the cleaning tank 2 side of the exhaust port 67 in order to prevent cleaning water from leaking outside through the exhaust port 67.

  The lower door body 7 is formed so as to cover the lower half of the opening 21 along the front end of each side wall 24, and is pivotally supported on the side wall 24 of the cleaning tank 2. In addition, a push-button opening button is provided on the upper side of the front side of the lower door body 7 and in a substantially central portion in the left-right direction.

In the dishwasher according to the first embodiment configured as described above, the washing water sprayed from the spray nozzles 40 and 40 adheres to the unevenness 61c of the transmittance changing portion during dish washing, and the transmittance changing portion is Since it gets wet, the light transmittance is increased, and the tableware A in the cleaning tank 2 can be visually recognized.
When the cleaning water spray is finished, the unevenness 61c of the transmittance changing portion is dried together with the tableware A by the heater 5, so that the light transmittance of the inner window portion 61a is lowered.
Accordingly, when the dishes are washed through the outer window 62a and the inner window 61a provided in the upper door 6 without opening and closing the upper door 6 and the lower door 7, the degree of stains of the tableware A is removed. It is possible to visually recognize how the cleaning water hits A, and it is possible to prevent the stained tableware A from being invisible to the user's eyes when it is not cleaned.

  Further, even when the sprayed washing water is blocked by the tableware A, the water adhering to the washing tank 2 can be guided to the unevenness 61c of the transmittance changing portion and wetted, and the inside of the washing tank 2 is washed. It can be made surely and stably visible.

  Furthermore, since the light transmittance changing part is formed by mat processing, a dishwasher having the above-described effects can be configured at low cost.

  In the dishwasher according to the first embodiment, the inner window portion is matted to form a transmittance changing portion in which the light transmittance changes, but the light transmittance can be changed. Other configurations may be used as long as they can be configured.

  Moreover, although the water conveyance path which guide | induces the adhering washing water to the inner side window part of an upper door body, and the top plate of a washing tank are combined, you may provide a dedicated water conveyance path in a washing tank.

  Furthermore, although the inner window portion is configured to be dried by the heater disposed in the cleaning tank, a dedicated heater may be disposed in the vicinity of the inner window portion or in the inner window portion. When comprised in this way, an inner side window part can be dried more rapidly and the inside of a washing tank can be made invisible.

(Embodiment 2)
FIG. 5 is a schematic side sectional view of a dishwasher according to Embodiment 2 of the present invention, and FIG. 6 is a schematic front sectional view of the dishwasher. The dishwasher according to the second embodiment is different from the dishwasher according to the first embodiment in that the washing water is directly sprayed on the unevenness 61c of the transmittance changing portion provided in the inner window 61a. Since they are different, the differences will be mainly described below.

  The dishwasher according to the second embodiment is branched between the washing pump 92 and the jet nozzles 40 and 40, and is washed into the window jet nozzle 41 that directly jets wash water to the unevenness 61c of the transmittance changing portion. A water supply pipe 42 for supplying water is provided. The water supply pipe 42 protrudes upward from the substantially central portion in the lateral direction on the back side of the bottom plate 22, extends upward along the back wall 23 of the cleaning tank 2, and further extends along the top plate 26 from the upper end of the back wall 23. It extends to the front side. A window spray nozzle 41 is provided at the tip of the water supply pipe 42.

  The window injection nozzle 41 includes a plurality of injection holes 41a for injecting cleaning water into the inner window 61a, and the plurality of injection holes 41a are arranged in parallel in the horizontal direction.

  In the dishwasher according to the second embodiment, the washing water can be directly sprayed onto the unevenness 61c of the transmittance changing portion by the window spray nozzle 41, and the unevenness 61c of the transmittance changing portion can be reliably ensured at the time of cleaning. Wetting can be made visible in the cleaning tank 2.

  Moreover, the residue adhering to the inner side window part 61a can be removed by spraying washing water on the unevenness | corrugation 61c of the inner side window part 61a, and the visibility in the washing tank 2 can be ensured.

  Other configurations, operations and effects of the dishwasher according to the second embodiment are the same as the configurations, operations and effects of the dishwasher according to the first embodiment. Detailed description is omitted.

(Embodiment 3)
FIG. 7 is a schematic side sectional view of a dishwasher according to Embodiment 3 of the present invention, and FIG. 8 is a schematic front sectional view of the dishwasher. The dishwasher according to the third embodiment of the present invention differs from the dishwasher according to the first embodiment in that the inner window 324a and the outer window 314a are provided in the washing tub 302 and the housing 301 in the following. The above differences will be described below.

  The dishwasher according to the third embodiment of the present invention includes a casing 301, a washing tub 302, an upper door body 6, a lower door body 7, and the like similar to the dishwasher according to the first embodiment.

  The cleaning tank 302 includes a bottom plate 322, a back wall 323, a side wall 324, a front wall 325, a top plate 326, and a drain port 327 similar to the cleaning tank 2 according to the first embodiment. A surface 310, a side wall 314 facing the side wall 324 of the cleaning tank 302, and the like are provided. There is a gap between one side wall 324 of the cleaning tank 302 and the side wall 314 of the housing 301 facing the side wall 324, and each side wall 314, 324 has a cleaning condition for the tableware A and cleaning water for the tableware A. In order to make it possible to visually recognize the degree of contact, a substantially rectangular translucent outer window 314a and inner window 324a are provided so as to face each other.

  FIG. 9 is a schematic enlarged side view of the inner window 324a, and FIG. 10 is a schematic enlarged front sectional view of the outer window 314a and the inner window 324a provided in the housing 301 and the cleaning tank 302. The inner window portion 324a has a transmittance changing portion where the light transmittance changes toward the cleaning tank 302, that is, unevenness 324c matted so that the light transmittance when wet is higher than the light transmittance when dried. Is formed. The outer window 314a is made of a synthetic resin, glass, or the like having a light transmitting property. Further, non-transparent frame portions 314b and 324b are formed on the outer edges of the outer window portion 314a and the inner window portion 324a.

In the dishwasher according to Embodiment 3, since the washing water sprayed from the spray nozzles 40 and 40 adheres to the unevenness 324c of the transmittance changing portion and the transmittance changing portion gets wet during dish washing, the light transmittance is increased. Becomes higher, and the tableware A in the cleaning tank 302 can be visually recognized.
When spraying of the washing water is finished, the unevenness 324c of the transmittance changing portion is dried together with the tableware A by the heater 5, so that the light transmittance is lowered.
Therefore, it is possible to visually check how the dishes A are removed and how the washing water hits the dishes A through the outer window 314a and the inner window 324a provided in the casing 301 and the cleaning tank 302. In addition, it is possible to prevent the tableware A, which is made invisible and dirty when not washed, from entering the user's eyes.

  In the third embodiment, the windows 314a and 324b are provided on the side walls 314 and 324 of the casing 301 and the cleaning tank 302. However, the windows 314a and 324b are provided on the top side and the back side of the casing 301 and the cleaning tank 302. Also good.

  Other configurations, operations, and effects of the dishwasher according to the third embodiment are the same as the configurations, operations, and effects of the dishwasher according to the first embodiment. Detailed description is omitted.

(Embodiment 4)
11 is a schematic side sectional view of a dishwasher according to Embodiment 4 of the present invention, and FIG. 12 is a schematic front sectional view of the dishwasher. The dishwasher according to the fourth embodiment is different from the dishwasher according to the third embodiment in that the washing water is directly injected into the inner window 324a. explain.

  The dishwasher according to the fourth embodiment branches between the washing pump 92 and the injection nozzles 40 and 40, and supplies the washing water to the window jet nozzle 441 that directly jets the washing water to the inner window 324a. A water supply pipe 442 is provided. The water supply pipe 442 protrudes upward from the back side and one end in the lateral direction of the bottom plate 322, extends upward along the side wall 324 of the cleaning tank 302, and has a bowl shape so that the tip is located above the inner window 324a. Is bent. A window spray nozzle 441 is provided at the tip of the water supply pipe 442. The window spray nozzle 441 includes a spray hole 441a for spraying cleaning water onto the inner window 324a.

  In the dishwasher according to the fourth embodiment, the washing water can be directly sprayed onto the unevenness 324c of the transmittance changing portion by the window spray nozzle 441, and the unevenness 324c of the transmittance changing portion can be reliably ensured during cleaning. It is possible to wet and make the inside of the cleaning tank 302 visible.

  Other configurations, operations, and effects of the dishwasher according to the fourth embodiment are the same as the configurations, operations, and effects of the dishwasher according to the first embodiment. Detailed description is omitted.

(Embodiment 5)
FIG. 13 is a schematic enlarged side sectional view of the upper door body 506 provided in the dishwasher according to the fifth embodiment.

  The upper door body 506 has an inclined portion 6a and a vertical portion 6b similar to the upper door body according to the first embodiment. The inclined portion 6a includes an inner wall 561 facing the cleaning tank 2 and an outer wall 62 exposed to the outside of the cleaning tank 2, and the inner wall 561 and the outer wall 62 are opposed to each other so that a predetermined gap is generated. The inner wall 561 and the outer wall 62 are provided with a translucent inner window portion 561a and an outer window portion 62a each having a substantially rectangular shape so that the tableware A in the cleaning tank 2 can be visually recognized. In addition, non-transparent frame portions 561b and 62b are formed on the periphery of the inner window portion 561a and the outer window portion 62a.

  The inner window 561a includes a thin-film transmittance changing layer 561c made of a material whose light transmittance changes according to temperature. The transmittance changing layer 561c is formed by applying a printing oil-based ink having a microencapsulated dye whose color changes depending on the temperature, for example, Chromium (registered trademark), to the cleaning tank 2 side of the inner window portion 561a. (Http://www.msc-color.co.jp/product/fn_chromicolor.html). The microencapsulated dye changes to, for example, a color at 40 degrees or less and a colorless at 50 degrees or more. That is, the inner window portion 561a has a lower light transmittance as the temperature is lower, and a higher light transmittance as the temperature is higher.

In the dishwasher according to Embodiment 5, when the washing water heated by the heater 5 is sprayed onto the inner window 561a, the temperature of the transmittance changing layer 561c of the inner window 561a is increased. Accordingly, the light transmittance becomes high, and it is possible to visually recognize how the dishes are removed and how the washing water hits the dishes during the cleaning in which the heated water is jetted.
When the injection of heated washing water stops, the temperature of the transmittance changing layer 561c of the inner window 561a is lowered. Accordingly, the light transmittance is lowered, and it is possible to prevent the tableware that is made invisible and soiled when not washed from entering the user's eyes.

  Other configurations, operations, and effects of the dishwasher according to the fifth embodiment are the same as the configurations, operations, and effects of the dishwasher according to the first embodiment. Detailed description is omitted.

(Embodiment 6)
FIG. 14 is a schematic enlarged side sectional view of the upper door body 606 provided in the dishwasher according to the sixth embodiment. The dishwasher according to the sixth embodiment has the same configuration as the dishwasher according to the first embodiment, and includes a liquid crystal shutter 61d that increases / decreases the light transmittance of the outer window 62a and the inner window 61a. Since the point is different from the dishwasher according to the first embodiment, the difference will be mainly described below.

  The liquid crystal shutter 61d is disposed between the outer window portion 62a and the inner window portion 61a so as to cover the inner window portion 61a. The liquid crystal shutter 61d is provided with two substantially rectangular glass substrates disposed to face each other and liquid crystal sealed in the glass substrate. The glass substrate is provided with electrodes for applying a voltage to the liquid crystal. The application of the voltage to the liquid crystal is configured to be controlled by the control unit 94 (see FIG. 15). In addition, a polarizing film is disposed outside the glass substrate so as to transmit light when a voltage is applied to the electrodes and to block light when no voltage is applied.

  FIG. 15 is a block diagram illustrating a configuration of the control unit 94. The control unit 94 is composed of, for example, a microcomputer having a CPU 94a, and a ROM 94b, a RAM 94d, a timer unit 94f, an input unit 94c, and an output unit 94e are connected to the CPU 94a via a bus 94g. An operation panel 93 is connected to the input unit 94c. A liquid crystal shutter 61d, a cleaning pump 92, a heater 5 and the like are connected to the output unit 94e.

  The ROM 94b stores a computer program related to cleaning dishes and opening / closing the liquid crystal shutter 61d. The CPU 94a controls the opening and closing of the liquid crystal shutter 61d by reading the computer program into the RAM 94d and executing it. Specifically, the CPU 94a controls the opening and closing of the liquid crystal shutter 61d so that the liquid crystal shutter 61d is opened when the cleaning pump 92 is driven and the liquid crystal shutter 61d is closed when the cleaning pump 92 is stopped.

  In the dishwasher according to the sixth embodiment, regardless of the temperature and wetness of the inner window portion 61a, the tableware A can be visually recognized when the washing pump 92 is driven, and the washing pump 92 is It is possible to reliably prevent the dirty tableware A from entering the eyes of the user during the non-washing that is stopped.

  Other configurations, operations, and effects of the dishwasher according to the sixth embodiment are the same as the configurations, operations, and effects of the dishwasher according to the first embodiment. Detailed description is omitted.

1 is a schematic side sectional view of a dishwasher according to Embodiment 1 of the present invention. It is a schematic front sectional view of the dishwasher according to Embodiment 1 of the present invention. It is a schematic front view of the dishwasher according to Embodiment 1 of the present invention. It is a simplified expanded sectional side view of the upper door body which concerns on Embodiment 1 of this invention. It is a schematic side sectional view of a dishwasher according to Embodiment 2 of the present invention. It is a schematic front sectional view of a dishwasher according to Embodiment 2 of the present invention. It is a schematic side sectional view of a dishwasher according to Embodiment 3 of the present invention. It is a schematic front sectional view of a dishwasher according to Embodiment 3 of the present invention. It is a simplified expanded side view of the inner side window part which concerns on Embodiment 3 of this invention. It is a schematic expanded front sectional view of an outer window part and an inner window part provided in a housing and a cleaning tank according to a third embodiment of the present invention. It is a schematic side sectional view of a dishwasher according to Embodiment 4 of the present invention. It is a schematic front sectional view of a dishwasher according to Embodiment 4 of the present invention. It is a simplified expanded sectional side view of the upper door body with which the dishwasher which concerns on Embodiment 5 is provided. FIG. 10 is a schematic enlarged side sectional view of an upper door body provided in a dishwasher according to a sixth embodiment. It is a block diagram which shows the structure of a control part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Case 2 Washing tank 3 Tableware basket 5 Heater 6 Upper door body 7 Lower door body 10 Mounting surface 21 Opening part 26 Top plate (water guide path)
40 Injection nozzle 41,441 Window injection nozzle (nozzle)
61a, 314a, 561a Inner window (window)
62a, 324b, 561b Outside window (window)
61c, 314c Concavity and convexity (transmittance change part)
61d LCD shutter (transmittance changing part)
92 Washing pump 94 Control unit 561c Transmittance changing layer (transmittance changing part)
A Tableware

Claims (9)

In the dishwasher provided with a window for visually confirming the tableware stored in the washing tub, and spraying the water supplied to the washing tub to the tableware,
The said window part is equipped with the transmittance | permeability change part from which a light transmittance changes. Dishwasher characterized by the above-mentioned. The transmittance changing portion is
The dishwasher according to claim 1, further comprising irregularities formed such that the light transmittance when wet is higher than the light transmittance when dried. The dishwasher according to claim 2, further comprising a nozzle that injects water to the transmittance changing portion. The washing tank is
The dishwasher according to claim 2, further comprising a water guide path that guides the water sprayed and attached to the washing tank to the transmittance changing portion. The dishwasher according to any one of claims 2 to 4, further comprising a heater that dries the transmittance changing portion and the tableware. A heater for heating the water supplied to the washing tank;
The transmittance changing portion is
The dishwasher according to claim 1, wherein when the temperature rises / falls, the light transmittance increases / decreases. Equipped with a washing pump for injecting water against the tableware,
The transmittance changing portion is
The dishwasher according to claim 1, further comprising a liquid crystal shutter that transmits light when the washing pump is driven and shields light when the washing pump is stopped. The dishwasher according to any one of claims 1 to 7, wherein the window portion is arranged in the washing tank. The washing tank has an opening for taking in and out dishes,
A door for closing the opening,
The dishwasher according to any one of claims 1 to 8, wherein the window portion is disposed on the door body.

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