JP2007260034A - Dishwasher/dryer and sink embedded therewith - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dishwasher/dryer and a sink embedded therewith eliminating fallen dish from causing melting or firing, eliminating the injury of a user, and preventing the sticking of stain on the bottom part of a washing tub by improving attachment and heat insulation performances of a heater. <P>SOLUTION: This dishwasher/dryer is provided with the washing tub 2, a wash water pump 25, a rotating nozzle 26, the heater 10 heating wash water, a warm air generation part 35 having a drying heater and a garbage filter 9. This dishwasher/dryer is further provided with a recessed wash water heating channel 7 connected to the wash water pump 25 by a water suction pipe via the garbage filter 9, in the bottom 5 of the washing tub 2, disposed with the heater 10 in the wash water heating channel 7, and the upper-face opening part of the wash water heating channel 7 is closed with a heat insulating cover 15. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a dishwasher that cleans and dries tableware stored in a washing tank, and a sink that incorporates the dishwasher.

  In a conventional dishwasher, a casing having a lid that can be opened and closed is equipped with a washing tank for storing dishes, a nozzle for injecting washing water and rinsing water into the washing tank, and a washing water and In a dishwasher having a pump for circulating and supplying rinse water and a heater for heating water, and washing, rinsing, and drying dishes, a dedicated drying heater and air blower outside the washing tank, apart from the heater There is one in which a fan is provided, the blower fan is operated before the drying heater, and the drying heater is stopped before the blower fan (see, for example, Patent Document 1).

  In addition, a duct that communicates the outside of the main unit with the inside of the washing tank is provided, and a fan device and a drying heater are provided in this duct. During the drying process, the fan device and the drying heater are operated to clean the hot air. By supplying the air into the tank and operating the fan device during the cleaning and rinsing process, an air flow toward the cleaning tank is generated in the duct, and water vapor enters the duct during the same process. (For example, see Patent Document 2).

JP-A-11-178778 (page 3-4, FIG. 1-2) JP-A-5-9456 (page 6-9, FIG. 1)

    In the dishwasher of Patent Documents 1 and 2, since the heater is energized while water is heated during the washing or rinsing process, the surface of the heater is at least at a temperature higher than the water temperature, For this reason, if tableware or chopsticks made of synthetic resin fall during washing or drying, deformation or melting occurs, and in the worst case, a fire accident may occur. In addition, when a user picks up a chopstick that has fallen to the bottom of the washing tank, especially a metal spoon or fork, it is heated directly in contact with the heater, causing burns. There is a risk of being burned or touching the heater to cause burns.

  In addition, a metal cover with a mesh or a large number of pores is attached to the upper part of the heater, and measures are taken to reduce tableware deformation, fire, and user burns. However, since the distance between the metal cover and the heater needs to be large, there is a problem that the apparatus becomes large and is not practical. For this reason, the distance between the metal cover and the heater is arranged within a limit range that can prevent the ignition of tableware, but the metal cover itself is heated to a high temperature. Although the user may be burned by the cover, and the extent of the burn is reduced, this problem is not completely solved.

  Further, when the heater is exposed and installed at the bottom of the cleaning tank, the heater heater mounting member, the above-described mesh-shaped metal cover, etc. are exposed at the bottom of the cleaning tank in addition to the heater. For this reason, there is a problem that a user feels uncomfortable because dirt after washing of tableware adheres to the uneven surface of these members installed at the bottom of the washing tank.

  The present invention has been made in order to solve the above-described problems, and by improving the installation and heat insulation performance of the heater, the dropped tableware may melt or ignite, or the user may be burned. In addition, it is an object of the present invention to provide a dishwasher / dryer and a sink incorporating the same, in which no dirt adheres to the bottom of the washing tank.

  The dishwasher according to the present invention includes a washing tank, a washing pump, a rotating nozzle, a heater for heating washing water, a hot air generator having a drying heater, and a leftover filter, and the leftovers at the bottom of the washing tank. A concave washing water heating channel connected to the washing water pump by a water supply pipe through a filter is provided, the heater is arranged in the washing water heating channel, and an upper surface opening of the washing water heating channel Is closed with a heat insulating cover.

  The sink according to the present invention incorporates the dishwasher described above.

According to the present invention, since the upper surface opening of the concave washing water heating flow path provided with the heater is closed with the heat insulating cover, the dropped tableware may be melted or ignited, or the user may It is possible to prevent a burn from being touched by the heated tableware or the heater, and it is possible to obtain a dishwasher which does not give unpleasant feeling due to contamination on the heater or the like.
In addition, by incorporating the above-described dishwasher, a convenient sink can be obtained.

[Embodiment 1]
1 is a perspective view showing a cross section of a part of the dishwasher according to Embodiment 1 of the present invention, FIG. 2 is a vertical cross section of FIG. 1, and FIG. 3 is a plan view of FIG. 4 is an AA cross-sectional view of the cleaning tank portion of FIG. 3. In addition, this Embodiment has shown the dishwasher integrated in a sink etc., and in the following description, the left side of FIGS. 1-3 is called the front side, and the right side is called the rear side.

  In the figure, reference numeral 1 denotes a box-shaped housing having an open front surface that constitutes the outline of the dishwasher. In the present embodiment, it is installed in a storage part of a dishwasher provided in a sink or the like to be described later. In the housing 1, a box-shaped washing tub 2 that constitutes the dishwasher main body having an upper surface opened is accommodated so as to be freely drawn out from the front opening of the housing 1. Reference numeral 3 denotes a front panel attached to the front side of the cleaning tank 2.

  An inflow recess 6 into which cleaning water flows is provided at the front corner of the bottom 5 of the cleaning tank 2, and communicates with the inflow recess 6 along with the inflow recess 6 to heat the cleaning water. A concave washing water heating channel 7 is provided. Reference numeral 8 denotes a rectifying protrusion provided in parallel with the flow direction of the wash water flowing through the wash water heating flow path 7. A leftover filter 9 is detachably installed in the inflow recess 6, and the support fixing member 11 is provided on the outer periphery of the rectifying projection 8 of the washing water heating channel 7 at a certain distance from the bottom. A heater 10 for heating the supported washing water is provided.

  A heat insulating cover 15 is made of, for example, a synthetic resin material having a low heat transfer coefficient and closes the opening on the upper surface of the washing water heating flow path 7 in which the heater 10 is disposed. As shown in FIG. Ribs 16 that are fitted and positioned in the cleaning water heating flow path 7 are provided on the lower surface inside the periphery. Reference numeral 17 denotes a heat shield plate made of a metal plate such as stainless steel having a low heat transfer coefficient.

  The heat insulating cover 15 is placed with the outer peripheral edge of the rib 16 on the stepped portion 5a provided on the outer periphery of the washing water heating channel 7 with the blocking plate 17 interposed therebetween, and the screw 23 inserted through the countersink 18 is inserted into the stepped portion 5a. Screwed into and fixed. At this time, the upper surface of the heat insulating cover 15 is positioned substantially on the same plane as the upper surface of the bottom 5 of the cleaning tank 2. In addition, in order to make attachment / detachment easy, as shown in FIG.5 (b), you may provide the handle 19 in the front side edge part of the heat insulation cover 15. FIG.

  6 and 7 are explanatory views showing other examples of the heat insulating cover 15. In FIG. 6, a heat insulating plate 17 is sandwiched between the heat insulating cover 15 and the step portion 5 a of the bottom 5, and a sealing material 20 such as a 0 ring is interposed between the heat insulating plate 17 and the heat insulating cover 15. These are fixed with screws 23. Thereby, the washing water heating flow path 7 can be sealed more reliably.

Further, FIG. 7 shows that the heat shield plate 17 is formed in a substantially U-shape and is coupled to the outer periphery of the rib 16 of the heat insulating cover 15, and is locked to the outer periphery of the heat shield plate 17 with a substantially toroidal cross section. When a packing 21 made of an endless elastic material having a protrusion 22 is attached, and the heat insulating cover 15 is inserted into the washing water heating flow path 7 to reduce the pressure, the locking protrusion 22 becomes the lower part of the step portions 5a and 5b. The heat insulating cover 15 is attached to the washing water heating flow path 7 with one touch by fitting the packing 21 to the tightening place. Reference numeral 16a denotes a rib for preventing the heat shield plate 17 from being deformed upward by water pressure.
According to this example, since it is not necessary to screw the heat insulating cover 15, it is very easy to attach and detach. Note that the handle 19 may also be provided in this example.

1 to 4 again, reference numeral 24 denotes a water supply port which is provided on the diagonal line of the flowing water recess 6 and supplies cleaning water into the cleaning tank 2.
Reference numeral 25 denotes a cleaning pump attached to the lower surface of the bottom 5 of the cleaning tank 2, and 26 denotes a plurality of injection ports 27, 27 a, which are rotatable on a support shaft 28 provided at substantially the center of the bottom 5 of the cleaning tank 2. A supported rotating nozzle is connected to the discharge port of the cleaning pump 25 by a water supply pipe 29. The cleaning water heating channel 7 is connected to the suction port of the cleaning pump 25 by a suction pipe 30. Reference numeral 31 denotes a drainage pipe having one end connected to the water supply pipe 29 of the cleaning pump 25, and the other end is led out of the housing 1 and opened. The water supply pipe 29 and the drain pipe 31 are switched by a switching valve (not shown).

Reference numeral 35 denotes a hot air blower installed on the rear wall of the cleaning tank 2, which includes a blower fan 36 driven by a motor 37, and a drying heater 38 disposed on the downstream side of the blower fan 36. Hot air is blown into the cleaning tank 2 from a hot air blowing port 39 provided on the rear wall of the cleaning tank 2.
40 is provided on the front wall of the washing tub 2 to control the operation of the dishwasher, 41 is an operation section provided on the front panel 3 of the washing tub 2, and 42 is an exhaust port.
Reference numeral 45 denotes an inner lid that opens and closes the upper surface opening of the cleaning tank 2, supported by a support member 46 provided on the side wall of the housing 1, and by a spring 47 interposed between the housing 1 and the support member 46. It is biased in a direction away from the cleaning tank 2.

FIG. 8 is an explanatory view showing a state in which the above-described dishwasher is incorporated in a sink, and FIG. 9 is an explanatory view showing a state in which the washing tank is pulled out from the sink.
The sink 60 is provided with a dishwasher housing 61, the housing 1 having an inner lid 45 is provided in the housing 61, and the washing tub 2 has a front opening of the housing 61. To be accommodated in the housing 1. And when the washing tank 2 is accommodated in the accommodating part 61, the upper surface opening part is obstruct | occluded by the inner cover 45, and the front panel 3 is on the same plane as the front door 62 of the sink 60, as shown in FIG. To position. Further, when the cleaning tank 2 is pulled out, the inner lid 45 is detached from the cleaning tank 2 so that the upper surface opening does not interfere with the top plate 63 of the sink 60. Although not shown, a stopper is provided so as to stop at a predetermined position when the cleaning tank 2 is pulled out. Reference numeral 4 denotes a handle provided on the front panel of the cleaning tank 2.

Next, the operation of the dishwasher according to the present embodiment configured as described above will be described.
First, as shown in FIG. 9, holding the handle 4, the cleaning tank 2 is pulled out from the accommodating portion 61 of the sink 60. At this time, the inner lid 45 urged by the spring 47 is detached from the cleaning tank 2 and left, and only the cleaning tank 2 is pulled out. And the tableware basket 50 which accommodated the tableware 51 is set in the washing tank 2 from an upper surface opening part. The tableware basket 50 may be set in the washing tub 2, and the tableware 51 may be put into the tableware basket 50 through the upper opening. Next, a certain amount of detergent is put into the cleaning tank 2, and the cleaning tank 2 is pushed into the storage portion 61 of the sink 60 and stored. At this time, the upper surface opening of the cleaning tank 2 is closed by the inner lid 45. This completes the preparation before cleaning.

Next, an outline of cleaning, rinsing and drying of tableware will be described.
A dishwasher generally includes a washing process with a detergent for decomposing and removing dishes, a rinsing process for removing the detergent and dirt, and a drying process for drying the rinsed dishes. It consists of three steps.

First, a fixed amount of water is supplied into the cleaning tank 2 containing the detergent from the water supply port 24 by water supply means (not shown) to obtain cleaning water. Next, the operation switch of the operation unit 41 is turned on to drive the cleaning pump 25.
Accordingly, the cleaning water in the cleaning tank 2 is sucked into the cleaning pump 25 from the leftover filter 9 through the inflow recess 6, the cleaning water heating flow path 7, and the suction pipe 30, and is pumped to the rotary nozzle 26 from the water supply pipe 29. Injected from the injection ports 27 and 27a.

  The rotating nozzle 26 is rotated by a reaction force caused by the injection of the cleaning water from the injection port 27, and sprays the cleaning water uniformly on the dishes 51 stored in the tableware basket 50 to remove dirt and the like. The washing water hitting the tableware 51 and the like falls into the washing tank 2, circulates again through the leftover filter 9, and repeats the injection from the rotating nozzle 26. During this time, the washing water is heated to a constant temperature by the heater 10 in the washing water heating channel 7 to become warm water, and the leftovers separated from the dishes 51 by the washing are captured by the leftover filter 9 (washing step). .

When the tableware 51 is cleaned for a predetermined time, the water supply pipe 29 is switched to the drain pipe 31, and the dirty cleaning water in the cleaning tank 2 is drained from the drain pipe 31 to the external sewage.
Next, the cleaning water is supplied again into the cleaning tank 2 from the water supply port 24, and the tableware 51 is rinsed by the same operation as the cleaning process (rinsing process). In the rinsing process, no detergent is added to the washing water.

  The washing process and the rinsing process as described above are usually performed 2 to 4 times to wash the tableware 51 and rinse. Finally, the hot air fan 36 of the hot air blowing section 35 is driven to send hot air heated by the drying heater 38 from the hot air blowing port 39 into the washing tub 2 to dry the dishes 51 (drying). Process). A series of these operations is controlled by the control unit 40.

Next, the operation and effect of the dishwasher according to the present embodiment will be described in more detail.
In the cleaning and rinsing process, the cleaning water in the cleaning tank 2 flows into the cleaning water heating flow path 7 after contact with the heater 10 after the garbage larger than the size of the eyes is removed by the leftover filter 9. Then, it is heated to become hot water, and is sucked into the cleaning pump 25 through the suction pipe 30. Then, it is pressurized by the cleaning pump 25 and sent from the water supply pipe 29 to the rotary nozzle 26 and injected from the injection holes 27 and 27a. At this time, the rotating nozzle 26 is rotated by a reaction force caused by a change in motion of the washing water jet, and sprays the washing water onto the dishes 51 without any problem.

  In this case, the heater 10 is energized only while the heater 10 is submerged in the cleaning water, and since the heat shield plate 17 and the heat insulating cover 15 are provided on the upper portion of the heater 10, Heat is prevented from being directly transferred to the tableware basket 50 accommodated in the washing tub 2. For this reason, even if the tableware 51 falls, for example, it will not be heated by the heater 10 and will not become hotter than the water temperature of the washing water.

Further, since the heat insulating cover 15 is not provided with a hole or the like for looking into the heater 10, the user does not notice the presence of the heater 10. For this reason, the user touches the heater 10 and burns. There is no waking.
Furthermore, since the heat insulation cover 15 is smoothly and continuously connected to the bottom surface of the cleaning tank 2 and installed so as to form the same plane, the heat insulation cover 15 blocks or retains the flow of the cleaning water. There is nothing to do.
Therefore, since there is no unevenness like a conventional heater installation member, leftovers and dirt of the tableware 51 are not caught and adhered to this part, and the user is not uncomfortable.

  On the other hand, since the rectifying protrusion 8 is provided in the cleaning water heating flow path 7, the rectifying protrusion 8 causes the cleaning water to flow uniformly in the same direction, and the flow is not retained. Therefore, the cleaning water does not come into contact with the heater 10 uniformly and heating unevenness does not occur, and since no flow stays, it is possible to prevent dirt from adhering to the heater 10.

  Moreover, since the heat insulation cover 15 and the heat shield plate 17 can be easily attached to and detached from the upper surface opening of the washing water heating flow path 7 by the screw 22 or the elastic packing 21, the heater 10 is broken. Easy to replace and clean. Moreover, since the heat shield plate 17 is sandwiched and fixed between the step portion 5a of the cleaning tank 5 and the heat insulating cover 15 or the rib 16 of the heat insulating cover 15 and the packing 21, it may vibrate due to the flow of water. Absent.

  Next, in the drying process, after the cleaning process and the rinsing process of the dishes 51 are completed and the cleaning water is drained, the motor 37 of the hot air blowing unit 35 is energized to rotate the hot air fan 36. As the hot air fan 36 rotates, the air is supplied to the drying heater 38 that is energized at the same time and heated. Air that has been heated to become warm air has low humidity and is highly hygroscopic. By sending this air from the hot air blowing port 39 into the cleaning chamber 2 and bringing it into contact with the tableware 51, the water adhering to the tableware 51 evaporates and the air absorbs moisture. The absorbed air is discharged from the exhaust port 42 to the outside. By performing this operation for a certain period of time, all the dishes 51 stored in the washing tub 2 are dried.

  During the drying process, the heater 38 is energized, but the heater 10 is not energized. As described above, since the heater 10 is not energized during the drying process, it is possible to prevent the generation of scorching, odor, and smoke due to the fine residue remaining on the surface of the heater 10. In addition, since the drying heater 38 is provided outside the cleaning tank 2, it does not cause melting or ignition by being heated directly in contact with the tableware 51.

[Embodiment 2]
FIG. 10 is an exploded perspective view of a main part of the dishwasher according to the second embodiment of the present invention, and FIG. 11 is a cross-sectional view showing an assembled state thereof. The same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
In the present embodiment, the rear side of the cleaning water heating flow path 7 provided at the bottom 5 of the cleaning tank 2 is bent and extended to the bottom of the rotary nozzle 26 to form a substantially L shape, and the heat insulating cover 15. Is formed in a substantially L shape corresponding to the washing tank heating flow path 7.

  A water feed hole 29a is provided at a position corresponding to the rotating nozzle 26 of the bent portion 7a of the washing water heating flow path 7, and the support shaft 28 that supports the rotating nozzle 26 is fitted, and the heat insulating cover 15 is bent. At the position corresponding to the water supply hole 29a of the part 15a, the support shaft 28 of the rotary nozzle 26 having the connection part 28a connected to the water supply pipe 29 at the lower part is mounted with the connection part 28a positioned on the lower surface of the heat insulating cover 15. It is a thing. In addition, 30a is a suction hole which is provided in the side wall of the washing water heating flow path 7 and to which the suction pipe 30 is connected.

  In the present embodiment configured as described above, the connecting portion 28a provided in the bent portion 15a of the heat insulating cover 15 is inserted into the water supply hole 29a provided in the bent portion 7a of the washing water heating channel 7. Then, by any of the means described in the first embodiment, the heat insulating cover 15 is fixed to the upper surface opening of the cleaning water heating channel 7 with the heat shield plate 17 interposed therebetween, and is closed. And in the lower surface of the bottom part 5 of the washing tank 2, the water supply pipe 29 is connected to the connection part 28a fitted in the water supply hole 29a, and the suction pipe 30 is connected to the suction hole 30a. Further, the rotary nozzle 26 is fitted and connected to the support shaft 28 provided on the heat insulating cover 15 with one touch.

  Although the operation and effect of the present embodiment are substantially the same as those of the first embodiment, the cleaning water heating flow path 7 and the heat insulating cover 15 are extended to the lower side of the rotary nozzle 26 and are provided on the heat insulating cover 15. Since the rotary nozzle 26 can be attached to and detached from the shaft 28 with one touch, cleaning and replacement of the rotary nozzle 26 is extremely easy, and when the heat insulating cover 15 is attached and detached, the support shaft 28 can be held. .

[Embodiment 3]
In the above description, the case where the illustrated dishwasher is incorporated in the sink is shown, but the present invention is not limited to this, and the present invention can also be implemented in a so-called tabletop dishwasher. . In this case, for example, the housing is formed in a box shape with an opening on the front side, a door is provided in the front opening, and a cleaning tank is installed in the housing. The main part of 1 and 2 can be implemented as it is. Furthermore, the structure of the dishwasher is not limited to that described above, and the present invention can be applied to dishwashers having other structures.

It is the perspective view which showed a part of dishwasher which concerns on Embodiment 1 of this invention in the cross section. It is a longitudinal cross-sectional view of FIG. It is a top view of FIG. 2 which abbreviate | omitted one part. It is AA sectional drawing of the washing tank part of FIG. It is sectional drawing of the heat insulation cover of FIG. 4, and a heat shield, and the perspective view of a heat insulation cover. It is sectional drawing of the other example of a heat insulation cover and a heat shield. It is sectional drawing of the other example of a heat insulation cover and a heat shield, and the perspective view of a heat insulation cover. It is a perspective view which shows the state which integrated the dishwasher of FIG. 1 in the sink. It is a perspective view which shows the state which pulled out the washing tank from the sink of FIG. It is a disassembled perspective view of the principal part of the dishwasher which concerns on Embodiment 2 of this invention. 6 is a longitudinal sectional view of a cleaning tank according to Embodiment 2. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Case, 2 Washing tank, 3 Front panel, 5 Bottom part, 7 Washing water heating flow path, 8 Rectification projection part, 9 Leftover filter, 10 Heating heater, 15 Heat insulation cover, 17 Heat shield plate, 24 Water supply port, 25 Washing pump, 26 Rotating nozzle, 28 Support shaft, 29 Water supply piping, 30 Suction piping, 31 Drainage piping, 35 Hot air blowing unit, 38 Drying heater, 39 Hot air blowing port, 40 Control unit, 41 Operation unit, 42 Exhaust Mouth, 45 inner lid, 50 tableware basket, 51 tableware, 60 sink.

Claims (9)

A washing tank, a washing pump, a rotating nozzle, a heater for heating washing water, a hot air generator having a drying heater and a leftover filter are provided.
Provided at the bottom of the washing tank is a concave washing water heating channel connected to the washing pump by a water supply pipe through the vegetable filter, and the heating heater is disposed in the washing water heating channel, and the washing A dishwasher characterized in that the upper surface opening of the water heating channel is closed by a heat insulating cover.   2. The dishwasher according to claim 1, wherein the heat insulating cover is made of a synthetic resin.   3. The dishwasher according to claim 1, wherein the heat insulating cover is fixed to the bottom of the washing tank with a screw.   3. The dishwasher according to claim 1, wherein the heat insulating cover is attached to the bottom of the washing tank through an elastic packing.   The dishwasher according to any one of claims 1 to 4, wherein a heat shield plate is disposed between the bottom of the washing tank and the heat insulating cover.   The dishwasher according to any one of claims 1 to 5, wherein the upper surface of the heat insulating cover is positioned substantially on the same plane as the upper surface of the bottom of the washing tank.   The dishwasher according to any one of claims 1 to 6, wherein a rectifying protrusion is provided in the washing water heating channel.   A water supply hole is provided at a position corresponding to the rotary nozzle of the washing water heating flow path, and a support shaft to which the rotary nozzle is mounted is provided at a position corresponding to the water supply hole of the heat insulating cover. The dishwasher according to any one of claims 1 to 7. A sink equipped with the dishwasher according to any one of claims 1 to 8.

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