JP3773637B2 - Dishwasher - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a dishwasher for washing and rinsing dishes in a washing chamber.
[0002]
[Prior art]
Conventionally, this kind of tableware washing machine is, for example, as shown in Japanese Utility Model Publication No. 55-51415 (A47L15 / 42), an upper and lower washing nozzle and a rinsing area (in the publication, referred to as a washing room). In the gazette, the upper and lower rinsing nozzles are arranged in the rinsing chamber), and a transfer mechanism is attached between the upper and lower nozzles to transfer the rack containing the dishes at a constant speed.
[0003]
A cleaning tank that opens to the upper surface is provided below the cleaning chamber. In the cleaning area, the cleaning water in the cleaning tank is sprayed from the upper and lower cleaning nozzles to the dishes by the pump. By rinsing certain rinsing water onto the dishes, washing and rinsing were successively performed.
[0004]
The cleaning water sprayed from the upper and lower cleaning nozzles flows into the cleaning tank and circulates, but the rinsing water sprayed from the upper and lower rinsing nozzles also flows into the cleaning tank. For this reason, an overflow pipe is provided in the cleaning tank to discharge the cleaning water (overflow water) increased by the inflow of the rinse water.
[0005]
Moreover, since the washing water in the washing tank is diluted when the rinsing water is allowed to flow as it is, a rinsing water receptacle (referred to as a rinsing hot water tray in the publication) is conventionally provided below the rinsing nozzle as in the above publication. A portion (about half) of the rinse water (rinse water) was received by this rinse water receiver and discharged to the outside.
[0006]
Furthermore, food stains, leftovers, etc. fall from the dishes. Among these, if large foreign matter flows into the cleaning tank, there is a risk that the pump will break down. Therefore, a tank filter is attached to the upper part of the cleaning tank, and this tank filter allows relatively large foreign matter to enter the cleaning tank. It was configured not to flow.
[0007]
[Problems to be solved by the invention]
Here, FIGS. 12 and 13 show the structure of the conventional overflow pipe 101. A conventional overflow pipe 101 has a cylindrical pipe having an opening at one end (this opening is referred to as “102”) as shown in the drawings. It was directed upward and attached at a predetermined height above the washing tank.
[0008]
However, in such a structure, since the opening area of the opening 102 is determined by the diameter of the pipe, the opening 102 is blocked by a foreign substance that passes through the tank filter and flows into the cleaning tank, and the overflow pipe 101 is clogged. There was a problem that the washing water overflowed.
[0009]
The present invention has been made to solve the conventional technical problems, and provides a dishwasher that can prevent drainage failure due to clogging of an overflow pipe.
[0010]
[Means for Solving the Problems]
The dishwasher of the present invention includes a cleaning nozzle and a rinsing nozzle provided in the cleaning chamber, and a cleaning tank that opens below the cleaning chamber, and sprays cleaning water in the cleaning tank from the cleaning nozzle to the dishes in the cleaning chamber. The rinsing water is sprayed from the rinsing nozzle and is rinsed, and includes an overflow pipe provided in the washing tank. The overflow pipe extends in the horizontal direction and has an end portion. The upper side is cut out over the predetermined range from the back.
[0011]
According to the present invention, the cleaning nozzle and the rinsing nozzle provided in the cleaning chamber and the cleaning tank that opens below the cleaning chamber are provided, and the cleaning water in the cleaning tank is jetted from the cleaning nozzle to the dishes in the cleaning chamber for cleaning. In a dishwasher that performs rinsing by rinsing with rinsing water from a rinsing nozzle, an overflow pipe is provided in the washing tank, the overflow pipe is extended in the horizontal direction, and the end of the overflow pipe extends from the end to a predetermined range. Since the upper side is notched, the opening area at the end can be expanded without being limited by the pipe diameter of the overflow pipe.
[0012]
As a result, it is possible to prevent the inconvenience that the opening of the overflow pipe is blocked by foreign matter in the washing tank as much as possible, and it is possible to smoothly discharge the overflow water so that the washing water overflows outside the dishwasher. Can be avoided in advance.
[0013]
A dishwasher according to a second aspect of the present invention is such that another overflow pipe that opens at a position higher than the overflow pipe is provided in the washing tank.
[0014]
According to the invention of claim 2, in addition to the above, another overflow pipe that opens at a position higher than the overflow pipe is provided in the washing tank, so that the overflow pipe below the bottom should be clogged. Even in this case, the overflow water can be discharged from another overflow pipe that opens above.
[0015]
Accordingly, it is possible to more reliably prevent overflow of the wash water from the dishwasher by discharging the overflow water more reliably.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described in detail with reference to the drawings. 1 is a longitudinal front view of the dishwasher DW of the present invention, FIG. 2 is another longitudinal front view of the dishwasher DW, FIG. 3 is a longitudinal front view of the washing tank 10 portion of the dishwasher DW, and FIG. The longitudinal side view of the washing tank 10 part of the dishwasher DW is shown, respectively.
[0017]
In each figure, reference numeral 1 denotes an exterior body, the interior of which is a cleaning chamber 2, and openings 6, 7 for entering and exiting a rack R that are opposed to both side walls 3, 4. The cleaning tank 10 is formed by recessing the side downward, and rack rails 12 and 12 for supporting the rack R movably from the opening 6 side to the opening 7 side are attached to the front and rear of the lower part in the cleaning chamber 2. ing.
[0018]
In the cleaning chamber 2, one opening 6 side serving as an inlet is a cleaning region W1, and the other outlet side serving as an outlet is a rinsing region W2, and a pair of upper and lower cleaning nozzles 13A that perform upstream cleaning in the upper and lower portions in the cleaning region W1, 13B is provided, and a pair of upper and lower rinsing nozzles 14A and 14B that perform final-stage rinsing are provided above and below the rinsing region W2, respectively. The rack rails 12 and 12 are provided from the cleaning area W1 to the rinsing area W2. Furthermore, a curtain C is suspended between the openings 6 and 7 and the regions W1 and W2.
[0019]
The upper cleaning nozzle 13A and the upper rinsing nozzle 14A are attached to the top wall 15 and the like of the exterior body 1. The cleaning water or the rinsing water is jetted downward from the injection ports 16A,. The lower rinsing nozzle 14B is mounted directly below the rack rails 12 and 12, and is configured to inject cleaning water or rinsing water upward from the injection ports 16B.
[0020]
Reference numeral 18 denotes a pump device that sucks and pressurizes the cleaning water stored in the cleaning tank 10 and supplies it to the upper and lower cleaning nozzles 13A and 13B through hollow tubes 20 and 21, respectively. The cleaning tank 10 is opened upward at the lower rear part of the cleaning chamber 2, and a tank having a plurality of fine through holes formed in the opening to filter relatively large leftovers in the cleaning water. A plurality of filters 31 are arranged in parallel. Further, a door 19 is provided on the front surface of the exterior body 1.
[0021]
The upper and lower rinsing nozzles 14A and 14B are supplied with rinsing water via a valve or pipe (not shown) from an appropriate water supply device (not shown) such as a boiler separately placed outside the outer casing 1. A rinsing water receiver 23 is disposed below the lower rinsing nozzle 14B so as to be positioned above the cleaning tank 10 and is located on the side of the tank filter 31.
[0022]
Here, an inclined portion 32 is formed in the front upper portion of the cleaning tank 10 so as to be continuously inclined downward from the front bottom wall 8 as shown in FIG. Further, a receiving rail 33 is formed on the rear wall 5 corresponding to the rear side of the inclined portion 32 so as to protrude from the left and right. The rear portion of the tank filter 31 is placed on the receiving rail 33 and the front side. The part is held by the inclined part 32 and is detachably provided.
[0023]
In this case, the front surface 31A of the tank filter 31 has an inclined surface substantially matching the inclination of the inclined portion 32 as shown in FIG. Thus, when the tank filter 31 is attached, the tank filter 31 is inserted into the cleaning chamber 2 from the front, placed on the rail 33 after receiving the rear portion, and then placed on the inclined portion 32 with the front surface 31A. It is installed at a position slightly lower than the bottom wall 8.
[0024]
At this time, the front surface 31 </ b> A and the inclined portion 32 of the tank filter 31 are substantially the same inclined surface, so the front surface 31 </ b> A is in close contact with the inclined portion 32. Further, since the upper end of the front surface 31A is lower than the bottom wall 8, there is no step or gap between the tank filter 31 and the bottom wall 8 or the washing tank 10, and there is a problem that leftovers enter from this portion. Can be eliminated.
[0025]
Furthermore, since the front surface 31A of the tank filter 31 is held by the inclined portion 32 and cannot move back and forth, there is no need to attach a front receiving rail. Further, when the tank filter 31 is taken out, the tank filter 31 can be taken out obliquely forward along the inclination of the inclined portion 32, so that it is easy to take out even if there is a nozzle 13B or the like above.
[0026]
On the other hand, the rinse water receiver 23 is a rectangular container having an upper surface opening as shown in FIGS. 6 and 7, and is disposed with its longitudinal direction directed in the front-rear direction of the dishwasher 1 and a plurality of A fine through hole 34... Is formed. Further, a drain port 36 is opened at the bottom rear portion of the rinse water receiver 23, and a rectangular filter portion 37 is provided at a position corresponding to the lower side of the drain port 36.
[0027]
In this case, the filter portion 37 may be formed integrally with the rinsing water receptacle 23. A separate object may be fixed to the bottom surface of the rinse water receiver 23 by welding or screws.
[0028]
A plurality of fine through holes 38 are formed in at least the front surface and the left and right surfaces of the filter portion 37, and a circular hole-shaped insertion port 39 is formed in the rear surface. Furthermore, stoppers 41 and 41 protrude downward from the left and right sides of the bottom surface of the rinse water receiver 23 and are formed in the front-rear direction. The entire top surface of the rinse water receiver 23 is covered with a filter (not shown).
[0029]
On the other hand, a receiving portion 42 is formed to protrude from the rear wall 5 at a level substantially the same as the bottom surface 8, and an overflow pipe is formed from the lower rear wall 5 (at a level substantially the same as the inclined portion 32). 43 is drawn into the washing tank 10. As shown in FIGS. 8 to 10, the overflow pipe 43 extends horizontally from the rear wall 5 toward the front. The lower half of the opening (front end) of the pipe having a cylindrical shape is closed, and the upper half is cut out in a predetermined range from there to the rear, and an opening 44 is formed there. Further, the rear end of the overflow pipe 43 communicates with the outside.
[0030]
When attaching the rinse water receiver 23, first, the tip of the overflow pipe 43 is inserted into the insertion port 39 of the filter part 37, and in this state, the rear part of the rinse water receiver 23 is placed on the receiving part 42. And the front part of the rinse water receptacle 23 is mounted on the bottom wall 8 (FIG. 6).
[0031]
In this state, the overflow pipe 43 closes the insertion port 39, the opening 44 of the overflow pipe 43 opens in the filter unit 37, and the drainage port 36 corresponds to above the opening 44. Moreover, the stoppers 41 and 41 of the rinse water receptacle 23 extend below the upper edge of the adjacent tank filter 31 (FIG. 6), thereby preventing the lateral displacement of each tank filter 31.
[0032]
Further, another safety overflow pipe 47 is erected at a substantially central portion of the cleaning tank 10 in the left-right direction. An upper end opening 47A of the safety overflow pipe 47 is inserted into the drain handle 48, and in this state, opens upward in the cleaning tank 10 at a position higher than the opening 44 of the overflow pipe 43. The lower end of the overflow pipe 47 communicates with the lower outside of the cleaning tank 10.
[0033]
Next, 25 is a rack feed supported by suspension plates 61... So as to be movable in the left-right direction, and is reciprocated left and right by a crank mechanism 26 driven by the electric motor 24. A plurality of rack feed pins 49... Are attached to the rack feed 25 so as to be repeatedly operated in arcs around the support shaft 27. The rack feed pins 49.. Are sequentially engaged with the rack R for storing the tableware D placed on the rack rails 12, 12, so that the opening 6 for the entrance is substantially closed to the opening 7 for the exit. The racks R are sequentially moved at a constant speed.
[0034]
Further, on the upper side of the rack rails 12 and 12, a cleaning switch 51 is mounted in the cleaning area W1, and a rinsing switch 52 is mounted in the rinsing area W2. Further, 53 is a liquid level switch provided in the cleaning tank 10, and 54 is an auxiliary heater for heating the cleaning tank 10. Reference numeral 56 denotes an electrical box provided on the front side of the cleaning tank 10, and an operation switch 57 and a switch 58 of the auxiliary heater 54 are provided on the front surface thereof. Reference numeral 59 denotes a switch box provided on the upper surface of the exterior body 1.
[0035]
With the above configuration, when cleaning the tableware D, after storing them in the rack R, they are inserted into the cleaning chamber 2 of the exterior body 1 through the opening 6 on the inlet side. As described above, the rack R is moved from the opening 6 side to the opening 7 side at a constant speed by the rack feed 25 as described above. When the rack R reaches the cleaning switch 51 in the cleaning area W1, it is closed. The pump device 18 is driven. As a result, the cleaning water in the cleaning tank 10 is sprayed to the tableware D from the injection ports 16A,..., 16B,. The washing water used for washing passes through the tank filter 31... Finally flows into the washing tank 10 and is again sucked into the pump device 18.
[0036]
When the rack R is further moved by the rack feed 25 and reaches the rinse switch 52 in the rinse region W2, it is closed and the valve is opened, whereby the injection ports 17A and 14B of the upper and lower rinse nozzles 14A and 14B are opened. , 17B... Rinse water consisting of warm water is sprayed onto the dishes D and rinsed with detergent while being moved. The rinsing water used for rinsing flows into the rinsing water receiver 23 through the filter, and about half of the rinsing water flows into the washing tank 10 through the through holes 34. From there, it directly enters the opening 44 of the overflow pipe 43 and is discharged to the outside.
[0037]
Finally, the rack R is sent out of the exterior body 1 from the opening 7 on the outlet side. Such cleaning and rinsing are performed continuously for a plurality of racks R inserted at predetermined intervals. However, since about half of the rinse water flows into the cleaning tank 10 as described above, the cleaning and rinsing are performed. The water level rises. Then, when the height rises from the height of the opening 44 of the overflow pipe 43, the part enters the overflow pipe 43 from the opening 44 of the overflow pipe 43 through the through holes 38. Will be discharged. In the process of passing through the through holes 38,..., Relatively large foreign matters are removed.
[0038]
At this time, the overflow pipe 43 extends in the horizontal direction, and the opening 44 is formed by notching the upper side from the end of the overflow pipe 43 to the depth of the predetermined range. The area is not limited by the pipe diameter of the overflow pipe 43 and is expanded.
[0039]
This prevents as much as possible the inconvenience that the opening 44 of the overflow pipe 43 is blocked by foreign matter in the cleaning tank 10 that has passed through the through holes 38 of the tank filter 31. Thus, it is possible to avoid inconveniences such as the smooth discharge of overflow water and the overflow of wash water out of the dishwasher DW.
[0040]
Further, since another overflow pipe 47 that opens at a position higher than the overflow pipe 43 is provided in the cleaning tank 10, even if the overflow pipe 43 is clogged, the upper part of the overflow pipe 47 is located above it. The overflow water can be discharged from the overflow pipe 47 that opens. This makes it possible to more reliably prevent overflow of the wash water from the dishwasher DW by discharging the overflow water more reliably.
[0041]
Further, since the filter portion 37 for preventing foreign matter from entering the overflow pipe 43 is attached to the rinse water receiver 23, it is lost as when a special filter is detachably attached to the overflow pipe 43. There is no inconvenience.
[0042]
Furthermore, since the stoppers 41 and 41 of the rinse water receiver 23 extend below the upper edge of the adjacent tank filter 31 as described above, the adjacent tank filter 31 sinks below the rinse water receiver 23. It will not disappear. Here, if the tank filter 31 is shifted laterally and enters the lower side of the rinse water receiver 23, a gap is generated between the tank filter 31 and the tank filter 31 that are arranged in parallel, from which large leftovers are washed. Although it enters the tank 10, the inconvenience is also prevented by the stopper 41.
[0043]
【The invention's effect】
As described above in detail, according to the present invention, the cleaning nozzle and the rinsing nozzle provided in the cleaning chamber and the cleaning tank opened below the cleaning chamber are provided. In a dishwasher that performs rinsing by spraying rinsing water from a rinsing nozzle, an overflow pipe is provided in the washing tank, and the overflow pipe extends in the horizontal direction from the end. Since the upper side is cut out over the predetermined range, the opening area at the end can be expanded without being limited by the pipe diameter of the overflow pipe.
[0044]
As a result, it is possible to prevent the inconvenience that the opening of the overflow pipe is blocked by foreign matter in the washing tank as much as possible, and it is possible to smoothly discharge the overflow water so that the washing water overflows outside the dishwasher. Can be avoided in advance.
[0045]
According to the invention of claim 2, in addition to the above, another overflow pipe that opens at a position higher than the overflow pipe is provided in the washing tank, so that the overflow pipe below the bottom should be clogged. Even in such a case, the overflow water can be discharged from another overflow pipe that opens above.
[0046]
This makes it possible to more reliably prevent overflow of the wash water from the dishwasher by discharging the overflow water more reliably.
[Brief description of the drawings]
FIG. 1 is a longitudinal front view of a dishwasher according to the present invention.
FIG. 2 is another longitudinal front view of the dishwasher of the present invention.
FIG. 3 is a longitudinal front view of a washing tank portion of the dishwasher of the present invention.
FIG. 4 is a longitudinal side view of a washing tank portion of the dishwasher of the present invention.
FIG. 5 is a schematic longitudinal side view of a tank filter portion of the dishwasher of the present invention.
FIG. 6 is a schematic longitudinal side view of a rinse water receiving portion of the dishwasher of the present invention.
FIG. 7 is a perspective view of a rinse water receiver of the dishwasher of the present invention.
FIG. 8 is a side view of the overflow pipe of the dishwasher of the present invention.
FIG. 9 is a plan view of an overflow pipe of the dishwasher of the present invention.
FIG. 10 is a front view of an overflow pipe of the dishwasher of the present invention.
FIG. 11 is a schematic longitudinal side view of the safety overflow pipe portion of the dishwasher of the present invention.
FIG. 12 is a front view of an overflow pipe of a conventional dishwasher.
FIG. 13 is a plan view of an overflow pipe of a conventional dishwasher.
[Explanation of symbols]
DW Dishwasher D Dishware W1 Washing area W2 Rinsing area R Rack 1 Exterior body 2 Washing room 10 Washing tanks 13A, 13B Vertical washing nozzles 14A, 14B Vertical rinsing nozzles 23 Rinsing water receiver 25 Rack feed 31 Tank filter 37 Filter unit 38 Through hole 41 Stopper 43, 47 Overflow pipe 44 Opening

Claims (2)

A cleaning nozzle and a rinsing nozzle provided in the cleaning chamber and a cleaning tank that opens below the cleaning chamber are provided, and cleaning is performed by spraying cleaning water in the cleaning tank from the cleaning nozzle to the dishes in the cleaning chamber. And a dishwasher for rinsing by spraying rinsing water from the rinsing nozzle,
An overflow pipe provided in the washing tank, the overflow pipe extending in the horizontal direction, and having an upper side cut out from the end to the inside of a predetermined range. Machine. 2. The dishwasher according to claim 1, wherein another overflow pipe that opens at a position higher than the overflow pipe is provided in the washing tank.

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