JP3835385B2 - dishwasher - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a dishwasher or dishwasher capable of switching a washing means for supplying washing water.
[0002]
[Prior art]
Conventionally, a general dishwasher has been configured as shown in FIG. Hereinafter, the configuration will be described. As shown in the figure, the dishwasher body 1 is provided with a washing tub 2 inside, and water or hot water is supplied into the washing tub 2 by a water supply valve 3. A drainage hole 4 is provided at the bottom of the washing tank 2, and a washing pump 5 that is connected to the drainage hole 4 and is driven by a motor is attached. The washing pump 5 circulates washing water into the washing tank 2. is doing. Further, the drain hole 4 is provided with a residue filter 6 for collecting the residue.
[0003]
That is, in this circulation, the washing water passes through the residual filter 6, is sucked into the washing pump 5, and is supplied from the washing pump 5 to the washing means (washing nozzle) 7 provided in the inner bottom portion of the washing tank 2. After being sprayed from the nozzle 7 and washing the dishes, the process returns to the drain hole 4 again. At this time, the residue dropped from the tableware flows into the residue filter 6 together with the washing water, and the residue having a size that cannot pass through the filter is collected by the residue filter 6.
[0004]
Further, a heater 8 for heating the cleaning water is provided between the cleaning nozzle 7 and the bottom of the cleaning tank 2, and tableware 9 can be arranged in an orderly manner above the cleaning nozzle 7, so that the cleaning water can be effectively disposed of in the tableware. The tableware basket 10 constituted so that it may inject to 9 is installed, and it wash | cleans efficiently. The drainage pump 11 discharges the washing water through the drainage hose 12 to the outside of the machine.
[0005]
However, in such a conventional dishwasher, the washing water is only sprayed from below, and all the dishes 9 set in the dish basket 10 cannot be efficiently washed, and the washing time becomes long. It has been considered that cleaning water is sprayed from multiple directions using individual cleaning nozzles (see, for example, Patent Document 1).
[0006]
In addition, it is also considered that cleaning is performed from multiple directions by using a switching unit that selectively switches the cleaning unit that supplies the cleaning water while sequentially jetting the cleaning water (see, for example, Patent Document 2).
[0007]
[Patent Document 1]
JP-A-5-305050
[Patent Document 2]
JP 2001-321316 A
[0008]
[Problems to be solved by the invention]
However, as described above, in the case of using a plurality of cleaning nozzles to inject cleaning water from multiple directions, in order to inject a larger amount of water at a time than before, naturally the amount of water supplied in the cleaning tank is also increased. I have to do more. That is, the temperature rise time of the washing water becomes longer due to the increase in the amount of water supply, resulting in an extended operation time, an increase in power consumption, an increase in the amount of water used, and a large washing pump is required. Numerous problems arise, such as an increase in cost and an increase in noise and vibration caused by jetting a large amount of washing water at a time.
[0009]
If the amount of water is not increased, there has been a problem that the spray pressure and flow rate from one cleaning means are reduced and cleaning becomes impossible.
[0010]
Further, in the case of using a switching means for selectively switching the cleaning means for supplying the cleaning water, and cleaning from multiple directions while sequentially injecting the cleaning water, the cleaning can be performed without increasing the water supply amount. However, since the basic setting position of the tableware is determined in the tableware basket, and the type of dirt and the method of attachment differ depending on the tableware, simply spraying from multiple directions does not improve the cleaning efficiency, leaving it unwashed. In order to secure the cleaning performance, the cleaning time is increased.
[0011]
This invention solves the said conventional subject, and aims at performing more highly efficient washing | cleaning, injecting washing water sequentially from multiple directions.
[0012]
[Means for Solving the Problems]
In order to solve the conventional problems as described above, the present invention switches between a plurality of cleaning means having an injection port for injecting cleaning water into a cleaning tank and a cleaning means to which cleaning water is supplied from a cleaning pump. Water-dividing means, The water diversion means includes an inflow portion into which the wash water flows, a casing having a plurality of outflow portions, a valve body provided with an opening through which the wash water passes, and a valve body and an engagement provided respectively in the casing. The valve body is provided so as to move forward and backward with respect to the outflow portion by intermittent operation of the washing pump, and the engagement portion between the valve body and the casing is moved forward and backward by the valve body. By engaging, the valve body rotates to sequentially switch the matching part of the opening part of the valve body and the outflow part supplying the cleaning water, and the outflow part and the cleaning means are connected by a cleaning path, and the opening The part is connected to the outflow part by opening two of the outflow parts simultaneously and non-uniformly by the rotational movement of the valve body. Water power of washing water sprayed from washing means But It is different.
[0013]
Thereby, optimal injection can be performed without increasing the amount of water used, and highly efficient cleaning can be performed. In addition, since the cleaning performance is improved, the amount of water supplied at one time can be reduced, and water saving and energy saving can be realized.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 of the present invention includes a tableware basket for setting an object to be cleaned, a cleaning tank for storing the tableware basket, a cleaning pump for pressurizing cleaning water, and spraying the cleaning water into the cleaning tank. A plurality of cleaning means having an injection port, and a water distribution means for switching the cleaning means supplied with the cleaning water from the cleaning pump, The water diversion means includes an inflow portion into which the wash water flows, a casing having a plurality of outflow portions, a valve body provided with an opening through which the wash water passes, and a valve body and an engagement provided respectively in the casing. The valve body is provided so as to move forward and backward with respect to the outflow portion by intermittent operation of the washing pump, and the engagement portion between the valve body and the casing is moved forward and backward by the valve body. By engaging, the valve body rotates to sequentially switch the matching part of the opening part of the valve body and the outflow part supplying the cleaning water, and the outflow part and the cleaning means are connected by a cleaning path, and the opening The part is connected to the outflow part by opening two of the outflow parts simultaneously and non-uniformly by the rotational movement of the valve body. Water power of washing water sprayed from washing means But It is designed to be different, and the spraying power is different from each other mainly for the downward and upward directions of the object to be cleaned, and the injection is performed at a flow rate and injection pressure suitable for the shape and dirt of the dishes. The rice grains stuck to teacups that were difficult to wash and the inside of deep cups can be washed well, reducing the reattachment that tends to remain on dishes. it can. In addition, The water power is the product of the injection pressure and the flow rate of cleaning water sprayed from the cleaning means, and indicates energy per unit time.
[0015]
According to a second aspect of the present invention, in the first aspect of the present invention, the spray pressure of the cleaning water sprayed from the cleaning means having the spray port below the tableware basket is injected above the lower surface of the tableware basket. It is designed to be higher than the spraying pressure of the cleaning water sprayed from the cleaning means with the mouth, so that the object to be cleaned set in the tableware basket can be cleaned strongly from below, and it can also clean the stuck dirt. it can. The object to be cleaned is set on the tableware basket, and spraying at a high pressure from the cleaning means located immediately below the tableware basket greatly contributes to the cleaning.
[0016]
Moreover, in order to make the wash water sprayed from below reach the top, it is necessary to spray at a high pressure.
[0017]
Further, even when the cleaning water is jetted simultaneously from the vertical direction, the cleaning power can be maintained by the high-pressure jet from below without losing the jet from above. This means that under any condition including simultaneous injection from above and below, the cleaning power by high pressure injection from below can be maintained, and there are no restrictions on the injection direction, etc., and the cleaning means is installed at the optimal injection position. it can.
[0018]
According to a third aspect of the present invention, in the first aspect of the present invention, the flow rate of the cleaning water sprayed from the cleaning means having the spray port above the lower surface of the tableware basket is lower than the tableware basket. As the result, the dirt once peeled off from the tableware may adhere to the tableware again as the cleaning water circulates. Although it will not be able to wash | clean, by spraying a large amount of water from the upper direction of tableware, these re-adhering substances can be washed off and the washing | cleaning performance can be aimed at.
[0019]
In addition, when a fixed cleaning means is used, it is effective to spray cleaning water over a wide range, and more efficient cleaning can be performed. In addition, even when the cleaning water is jetted simultaneously from above and below, since it can be washed away at a flow rate that exceeds jetting from below, there is no effect on the effect of washing away the re-adhered matter, and high rinsing performance can be maintained. This means that under any conditions including simultaneous injection from the top and bottom directions, the re-adhered matter can be washed away with a large amount of injection from above, and there is no restriction on the injection direction, etc. There is an advantage that can be done.
[0020]
Claim 4 The invention described in claim 1 1-3 In the invention described in the above, the output of the cleaning pump differs depending on the cleaning means to which the cleaning water is supplied, so that more efficient cleaning can be performed, such as injection at a higher pressure or a higher flow rate. .
[0021]
Claim 5 The invention described in claim 1 1-4 In the invention described in the above, the spraying time for spraying the cleaning water is different depending on the cleaning unit to which the cleaning water is supplied. High cleaning performance can be obtained without lengthening the time.
[0022]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0023]
Example 1
As shown in FIGS. 1 and 2, the dishwasher main body 20 is provided with a washing tub 22 that can be opened and closed by a door 21, and an object to be cleaned 23 such as tableware is set in a tableware basket 24 and accommodated in the washing tub 22. is doing.
[0024]
A water supply valve (not shown) supplies cleaning water to the cleaning tank 22, and a cleaning pump 26 pressurizes the cleaning water and supplies it to a cleaning means (cleaning nozzle) 27 provided with a plurality of injection holes. Washing water is jetted from the washing means 27. The cleaning means 27 is installed at four locations, 27a and 27b sprayed from below the tableware basket 24, and 27c and 27d sprayed from the back (side) side of the cleaning tank 22, and the cleaning means 27a and 27b are axially driven by a jet. The rotating nozzles and cleaning means 27c and 27d rotating around are fixed and do not move, and each cleaning means 27 is provided with about 4 to 10 injection ports for injecting cleaning water.
[0025]
The bottom of the cleaning tank 22 has a drain port 28 communicating with the suction side of the cleaning pump 26. The drain port 28 is provided with a residue filter 29 for collecting residue and a heating element 30 for heating. A temperature sensor 31 for detecting the temperature of the cleaning tank 22 is provided. The drainage pump 32 discharges the cleaning water in the cleaning tank 22. The blower (not shown) sends air to the cleaning tank 22 through a blower path (not shown) and discharges the exhaust from the exhaust port 35.
[0026]
Further, a water distribution means 37 for selectively switching the cleaning means 27 for supplying the cleaning water to the discharge path 36 of the cleaning pump 26 is provided. The water distribution means 37 is provided with inflow portions 38 and 4 through which the cleaning water flows. The four outflow portions 39 communicated with each of the cleaning means 27 are provided, and each of the four outflow portions 39 is connected to the cleaning means 27 through a cleaning path 43. In addition, one washing | cleaning means points out the aggregate | assembly of the injection nozzle in which the wash water which passed the one washing | cleaning path | route 43 is injected.
[0027]
The water diversion means 37 is configured as shown in FIG. 3, and includes a casing 40 having an inflow portion 38 and an outflow portion 39, and a valve body 41 movably provided in the casing 40. Is provided with an opening 42 through which washing water passes. And it has the drive motor (electric drive source) 54 which rotates the valve body 41 in order to switch the outflow part 39 connected to the opening part 42, and the motor shaft 55 of this drive motor 54 has the clearance gap. The valve body 41 is fitted.
[0028]
In the above configuration, first, the basic operation of the dishwasher will be described. An object to be cleaned 23 such as tableware is set in a tableware basket 24 and stored in the washing tub 22. After the detergent is introduced, the door 21 closes the opening of the tableware washing machine body 20 and starts operation. A cleaning process for removing dirt on the object to be cleaned 23, a rinsing process for pouring the attached detergent and leftovers, and a drying process for drying the water suitable for the object to be cleaned 23 are performed in this order.
[0029]
First, the water supply valve 25 is operated to supply a predetermined amount of cleaning water to the cleaning tank 22, and then the cleaning water is pressurized by the cleaning pump 26, and the cleaning water 27 is jetted from the cleaning means 27. At this time, the heating process is performed while heating the heating water by energizing the heating element 30 such as a sheathed heater provided in the cleaning tank 22. Further, the temperature sensor 31 detects the temperature of the cleaning tank 22 and stops the energization of the heating element 30 when the temperature becomes higher than a predetermined temperature.
[0030]
The circulation of the washing water passes through the residual filter 29, is sucked into the washing pump 26, and is supplied from the washing pump 26 to the washing means (washing nozzle) 27 provided at the inner bottom portion of the washing tank 22. After being sprayed, the dishes 23 are washed, and then returned to the drain port 28 again. At this time, the residue dropped from the tableware 23 flows into the residue filter 29 together with the washing water, and the residue having a size that cannot pass through the filter is collected by the residue filter 29.
[0031]
When the cleaning process for a predetermined time is finished, the cleaning water containing dirt is discharged out of the apparatus by the drain pump 32, and the cleaning water is newly supplied. The washing pump 26 is operated, and washing water is sprayed again from the washing means 27 to rinse the article 23 to be washed, such as detergent and leftovers. After the operation for a predetermined time, the operation of discharging the cleaning water and supplying the cleaning water again is repeated, and this rinsing process is continuously performed about three times. Finally, the washing water is discharged outside the apparatus, and the rinsing process is completed.
[0032]
Subsequently, by performing a drying process and operating the blower, the outside air is blown into the cleaning tank 22 through the blower path and is discharged from the exhaust port 35. At this time, the heating element 30 is energized, and evaporation of water droplets adhering to the object to be cleaned 23 is promoted by the effects of both air blowing and temperature. These drying steps are performed for a predetermined time, and the operation is terminated.
[0033]
Next, the operation and action of the water distribution means 37 and the cleaning means 27 which are characteristic configurations of the present embodiment will be described. The water diversion means 37 has a configuration in which an outflow portion 39 from which the washing water that has flowed into the casing 40 flows out from the inflow portion 38 is branched by the rotation operation of the valve body 41. The drive motor 54 is driven to drive the valve body 41. By rotating, the outflow part 39 for supplying the cleaning water is sequentially switched, and the cleaning means 27 for spraying the cleaning water can be switched in the order of 27a, 27b, 27c, 27d.
[0034]
At this time, the drive motor 54 has a method of continuously driving and a method of driving intermittently so that the opening 42 stops at the position of the outflow portion 39. In the former case, the position of the valve body 41 is changed. No sensor or the like to detect is required, and the configuration becomes simple. In the latter case, a position sensor or the like is required, but switching efficiency is good, and the position of the cleaning means 27 and the injection time are selectively set according to the situation. There are advantages to doing this, but not limiting. In addition, if the time of spraying from one cleaning means 27 is switched from several seconds to several minutes, efficient cleaning can be performed. However, at least one cleaning means is used at least once during one cleaning or rinsing process. It is desirable to set so that the fuel is ejected from 27. Therefore, it may be set to about 10 seconds to 1 minute.
[0035]
Rather than supplying cleaning water to the four cleaning means 27 at the same time, since the cleaning water is sequentially sent using the water diversion means 37, the water supply amount is not increased, and a plurality of directions can be applied to one object to be cleaned. Although the cleaning water can be sprayed from the top and the cleaning performance is improved, the basic setting position of the tableware 23 is determined in the tableware basket 24, and the type of dirt and the method of attachment differ for each tableware 23 Therefore, simply spraying from multiple directions does not improve the cleaning efficiency, resulting in problems such as leaving unwashed or increasing the cleaning time in order to ensure the cleaning performance.
[0036]
Therefore, the flow adjusting unit 56 adjusts the water power of the cleaning water sprayed from each cleaning means 27 to be different. The water power is the product of the pressure and flow rate of cleaning water ejected from the cleaning means 27 and represents energy per unit time, and jets ejected from a plurality of ejection ports provided in one cleaning means 27. The total value of By changing this water power for each cleaning means 27, it is possible to inject at a flow rate and pressure suitable for the object to be cleaned 23, and the inside of rice grains and deep cups stuck to teacups that were difficult to wash until now. The cleaning performance can be improved, such as washing and reducing re-adhesion. This is an effect obtained only by sequentially jetting the high-pressure and large-flow-rate washing water by the water dividing means 37 and optimally setting the water power for each washing means 27.
[0037]
When the output of the cleaning pump 26 is constant, the relationship between the flow rate and the injection pressure is generally as shown in FIG. 4, and the hydraulic power has a peak characteristic as shown in FIG. Therefore, in terms of energy, it is desirable to use under conditions near this peak, but injection under these conditions is not always optimal for cleaning.
[0038]
For example, high-pressure jetting is more suitable for washing rice grains stuck to tea bowls, and it is desirable to wash under increased pressure even when the hydraulic power is below the peak. This high pressure injection can be realized by using the water diversion means 37.
[0039]
Moreover, if the spraying pressure of the cleaning means 27 sprayed from below the tableware basket 24 is set to be equal to or higher than the spraying pressure at which the hydraulic power reaches its peak, cleaning can be performed efficiently in terms of energy, shortening the time. It leads to energy saving.
[0040]
On the other hand, since dishes have a large surface area, it is desirable to uniformly spray cleaning water over the entire surface. Moreover, since there are many stains such as boiled juice and oil stains and there is not so much sticking, it is effective to wash away the whole with a large amount of water.
[0041]
In addition, in dishwashers that circulate wash water, fine residue is circulated with the wash water, and if the wash water is uneven, the residue may remain attached to the dish surface. As a result, it may be in a state where it has not been cleaned, but it is also effective to spray a large amount of water from above the tableware to wash away the reattached residue. is there. This large flow rate injection can be realized by using the water diversion means 37.
[0042]
In addition, if the flow rate of the cleaning water sprayed from the cleaning means 27 sprayed from above is set to be equal to or larger than the flow rate at which the hydraulic power reaches a peak, cleaning can be performed efficiently in terms of energy. It leads to energy saving.
[0043]
For example, from the cleaning means 27a and 27b sprayed from below the table basket 24, a flow of 25 kPa and 24 L / min is sprayed, and from the cleaning means 27c and 27d sprayed from above the table basket 24, 20 kPa and 35 L / min. The water power is about 10W for the former and about 12W for the latter. By changing this water power, more effective cleaning can be performed as described above, improving the cleaning performance and shortening the cleaning time. Can be planned.
[0044]
Moreover, since the water power of the spray is different for each cleaning means 27 using the water diversion means 37 and optimally set, the detergent and the residue attached to the tableware can be rinsed with high efficiency. It is possible to reduce the number of times, for example, it is possible to reduce the rinsing that has been performed in four steps to three steps. Since the amount of water supplied at one time can be reduced and the number of times of rinsing can be reduced, the heating time of the cleaning water using the heater 30 can also be shortened, and water saving and energy saving can be realized.
[0045]
Note that the water power of all of the plurality of cleaning means 27 may be changed, but it is not necessary to change all of them, and the effect is exhibited if only the necessary portions are changed. Further, when there are a plurality of cleaning means 27 below or above the tableware basket 24, it is not necessary that all of them satisfy the conditions of the injection pressure and the amount of water as described above. For example, the upper and lower conditions may sometimes be reversed, but the effect can be obtained.
[0046]
Further, depending on the setting of the flow adjusting unit 56, both the pressure and the flow rate can be increased. For example, it is possible to inject a flow of 30 kPa and 30 L / min from the cleaning unit 27c. In this case, the pressure is higher than that of the lower cleaning means 27, but it goes without saying that an effect can be obtained in that it is washed away with a large amount of water from above.
[0047]
Further, it is not necessary to change both conditions of pressure and flow rate, and each effect can be obtained even when only one of them is changed.
[0048]
The flow adjusting unit 56 is a passage unit having a different cross-sectional area provided in the cleaning path 43, but everything from the cleaning path 43 to the injection port is related to the flow, and in particular, the flow adjusting unit 56 is provided. In addition, it is possible to adjust the cleaning path 43 itself, and the same effect can be obtained. It is also possible to adjust only by setting the injection port. Moreover, it can be arbitrarily adjusted by installing a valve body that can adjust the opening, and finer control can be performed.
[0049]
Further, when the output of the cleaning pump 26 is variable, such as when an inverter motor capable of changing the rotational speed of the cleaning pump 26 is used, the output of the cleaning pump can be changed by the cleaning means 27 to which cleaning water is supplied. It is possible to perform more efficient cleaning, such as spraying at a higher pressure or flowing a higher flow rate.
[0050]
For example, when spraying from the cleaning means 27a, the output can be increased, the spray pressure can be increased, and the rice can be removed in a short time. At this time, it is necessary to detect which cleaning means 27 is ejecting, and a sensor that detects the position of the valve body 41 of the water diversion means 37 is used, or a sensor that detects the pressure and flow in the cleaning path 43. Can be determined.
[0051]
Further, if the spraying time is different for each cleaning means 27, high cleaning performance can be obtained without increasing the total operation time by multiplying the cleaning time by increasing the cleaning time. For example, a lot of energy is required for cleaning a rice bowl with rice grains stuck thereto, and if the spraying time from the cleaning means 27a is increased, it can be cleaned without increasing the overall time.
[0052]
It is also effective to change the switching time between washing and rinsing. In the final rinse, the reattached particles can be washed away by increasing the interval between water splits or by increasing the spraying time from above. Therefore, the performance can be improved. For this purpose, the switching time can be controlled by detecting the injection position, or it can be lengthened by a mechanical means such as changing the area of the outflow portion 39 of the water dividing means 37.
[0053]
When the planar shape of the cleaning tank 22 is substantially square, the cleaning water 27 can be sprayed to the entire cleaning tank 22 by providing one rotating cleaning means 27 on the bottom surface of the cleaning tank 22. Further, if the cleaning means 27 that rotates further is provided and a total of two rotating cleaning means 27 are used, highly efficient cleaning can be realized.
[0054]
However, when the planar shape of the cleaning tank 22 is substantially rectangular as shown in FIG. 1, it is very difficult to spray the cleaning water to the entire cleaning tank 22 with one cleaning means 27, and at the very least the dish basket 24. Two cleaning means are required below.
[0055]
Moreover, as the aspect ratio of the rectangle deviates from twice, as shown in FIG. 5, an area (hatched portion) that cannot be cleaned only by the two rotating cleaning means 27 becomes larger, and the cleaning water is spread over the entire dish basket 24. It becomes more difficult. For this reason, it is indispensable to install three or more cleaning means 27, and more cleaning means 27 are required to allow the cleaning water to be applied from a plurality of directions.
[0056]
In this case, naturally, a large number of injection ports are required, and if it is attempted to inject cleaning water at the same time, it is necessary to circulate a large amount of cleaning water. However, by using the water dividing means 37, a small amount of water is required. It becomes possible to perform the cleaning with the water separating means 37, and the effect of the water dividing means 37 can be further exhibited.
[0057]
The tableware basket 24 has a basic set position of the tableware 23. In most cases, the user sets and uses the tableware in that position. For this reason, providing the cleaning means 27 at a position corresponding to the tableware position is effective for improving the cleaning performance, and spraying the cleaning water at an appropriate injection pressure and flow rate further improves the cleaning performance. .
[0058]
In the tableware basket 24 of the present embodiment, the lower half of the lower half mainly includes the bowl 23A, the right half of the bowl 23B, and the small article 23C such as chopsticks is placed near the center, and the upper half provided above the bowl. Is designed to set a cup of water or a cup 23D.
[0059]
In FIG. 1, a cleaning means 27 c having an injection port above the dishes 23 </ b> B mainly set on the right side of the tableware basket 24 is provided on the upper right side of the back surface near the dishes 23 </ b> B, and is set on the upper part of the cleaning tank 22. A cleaning means 27d for injecting cleaning water from below the class 23D is provided at an intermediate height position on the right side of the back surface.
[0060]
Further, the cleaning means 27d is provided with an injection port that directly injects toward the top surface of the cleaning tank 22. Further, both of the cleaning means 27c and 27d are provided with an injection port aimed at the accessory 23C.
[0061]
If the dishes 23B have a large surface area and are simply sprayed from multiple directions, the residue once washed off cannot be washed away easily. By providing the cleaning means 27c on the upper side, it is possible to perform effective rinsing by spraying a large amount of cleaning water from the upper side of the dishes 23B without increasing the amount of water used, and washing away from the top, thereby eliminating reattachment. it can.
[0062]
In addition, it goes without saying that this jet contributes to cleaning, and both the performance of cleaning and rinsing can be improved, and highly efficient cleaning can be performed. In addition, since the cleaning performance is improved, it is possible to reduce the amount of water supplied at one time if the same performance as before is ensured, and to realize water saving and energy saving.
[0063]
Further, the cups and cups 23D have a shape whose depth is larger than the entrance dimension, and when cleaning the inside, both the high injection pressure reaching the depth and the flow rate for spreading the cleaning water over the entire inner wall Is required. By providing a cleaning means 27d that directly injects cleaning water toward the inside of the cups 23D in the vicinity of the position where the cups 23D are set, and by obtaining high-pressure, large-flow injection by the water diversion means 37, The cleaning performance can be improved without increasing the amount of water supply.
[0064]
Further, since the hot water drinker is basically placed face down, the thread bottom E tends to accumulate residue, but has an injection port that directly injects toward the top surface of the washing tank 22. Without being blocked by the object to be cleaned, these residues can be washed away by dropping the cleaning water from the top surface, and the rinsing performance is improved. In addition, a convex part is formed above the arrangement position of the cups 23D on the top surface so that the washing water is concentrated on the thread bottom E, thereby further improving the rinsing performance of the thread bottom. .
[0065]
In addition, the spray port of the cleaning means 27c is also sprayed from above the small items 23C such as chopsticks and spoons, and the residue is easily reattached to the portion where the small items overlap each other. As in the case of 23B, high-performance rinsing can be performed by spraying a large amount of washing water from above.
[0066]
Note that the expression “from above the object to be cleaned” does not mean that it is directly above, but includes an injection port on the wall surface of the cleaning tank 22 and includes injection from obliquely above, and the above-described effects can be obtained. There is no difference. Moreover, it is not necessary to inject from the upper part with respect to all the dishes 23B, and the effect for that can be acquired even if it injects only partially. The same applies to the expression from below. Therefore, even if the cleaning means 27 is provided on the wall surface, protrudes from the wall surface, is provided in the space, or is installed in the tableware basket 24, the same effect can be obtained.
[0067]
Further, the cleaning means 27d provided on the left side of the back surface also injects toward the small items 23C located on the right side of the cleaning tank 22. Even if a slight amount is injected toward the space in another direction, the washing water hits from more directions, so that the washing performance is further improved. Even in the other cleaning means 27, for example, the rotating cleaning means 27a and 27b, the effect can be obtained by directing the nozzle at the tip to a space in another direction.
[0068]
In addition, although the water diversion means 37 made the system which rotates the valve body 41 with the drive motor 54, as shown in FIG. 3, the same washing | cleaning effect is acquired by what kind of system. For example, as shown in FIGS. 6 and 7, there is a method of switching the valve body 41 by using the ON / OFF operation of the cleaning pump 26. This is because the pump 26 is operated intermittently by using the vertical movement of the valve body 41 by ON / OFF of the cleaning pump 26 and the fitting of the engaging portions 44 and 45 provided on the casing 40 and the valve body 41. By doing so, the outflow part can be switched sequentially.
[0069]
If the cleaning pump 26 is operated from the state of FIG. 7 in which the cleaning pump 26 is stopped, the valve body 41 rises while rotating along the engaging portion 44, and the valve body 41 stops at a predetermined position, so that Washing water can be supplied only to the cleaning means 27. In this case, switching can be performed without using the electric drive means, and the small water diversion means 37 can be provided at low cost. In addition, various systems such as an on-off valve and a three-way valve can be considered.
[0070]
In this embodiment, a part of the cleaning path 43 provided on the back surface and the cleaning means 27c and 27d are separated from the cleaning tank 22 and are arranged in the cleaning tank 22, but the cleaning tank 22 is formed of stainless steel. Even when it is difficult to form a flow path on the side wall surface, such as when it is applied, it can be easily attached. Moreover, if it is a separate body, parts can be transported efficiently because the parts can be miniaturized.
[0071]
Moreover, although the washing | cleaning means 27c and 27d were each comprised separately, it can also comprise integrally from the standup part from a tank bottom to the previous injection port. In this case, the cost can be reduced because the number of parts and the number of assembly steps are reduced. Further, when the cleaning tank 22 is formed of resin, the cleaning path 43 can be integrally formed on the wall surface of the cleaning tank 22 and the injection port can be directly provided on the wall surface of the cleaning tank 22.
[0072]
Moreover, it is not necessary to attach to the wall surface of the washing tank 22, and there is no problem if the cleaning means 27 is attached to the tableware basket 24 and sprayed on the tableware from a predetermined direction.
[0073]
In the present embodiment, the number of the cleaning means 27 is four, but the number may be set according to the tableware arrangement of the tableware basket 24 and the like. Although the rotary type and the fixed type are not limited, the use of the rotary nozzle improves the cleaning performance, but the space occupied by the cleaning means 27 increases. However, it is desirable to use a rotating nozzle because cleaning by two cleanings from below is the main cleaning. Also, as shown in FIG. 8, all of the rotating nozzles can be used.
[0074]
Moreover, it can also be set as the structure which provides an injection port in the door 21 or the door side, and injects in a back direction, and in this case, injection does not hit the seal part of the door 21 directly and favorable sealing performance is obtained. .
[0075]
Further, in the dishwasher in the rectangular washing tub 22, it is common to use two rotary nozzles below the lower dish basket 24, and the lower two rotary nozzles spray at the same time (one washing If it is operated as a means), an effect of reducing the amount of water cannot be expected, but a high-performance dishwasher can be provided in terms of powerful washing. At the same time, many cleaning means 27 can be provided above, and the effect of rinsing with a larger flow rate from above is further increased.
[0076]
Further, the cleaning means 27 to be sprayed is only one of the plurality of cleaning means 27, but by providing two or more openings 42 of the valve body 41, the plurality of cleaning means 27 It is also possible to inject simultaneously and switch the position. In this case, injection can be performed simultaneously while using the lower two rotating nozzles as separate cleaning means.
[0077]
Further, if one of the plurality of outflow portions 39 is connected to a discharge path for discharging washing water to the outside of the machine, drainage can be performed without using the drainage pump 32, and the drainage pump 32 is installed. This eliminates the need for cost reduction and downsizing of the apparatus. Note that when the cleaning means 27 is sequentially switched during the cleaning operation, the outflow part 39 always passes through. Therefore, if the cleaning pump 26 is continuously operated, the drainage is performed during the cleaning. It is possible to prevent drainage to the outside of the machine other than during drainage by detecting the section 39 and setting the time for supplying cleaning water to the drainage outflow section 39 except for during drainage.
[0078]
Further, if an on-off valve is provided in the middle of the drainage path, it is possible to reliably prevent the washing water from draining outside the machine. Moreover, the rotation of the valve body of the water splitting means 37 can be reversed in the middle so as not to branch to the drainage path, and unnecessary drainage can be prevented.
[0079]
Moreover, the tableware arrangement | positioning in the tableware basket 24 is an example, and should just provide the washing | cleaning means 27 corresponding to the position to set. Further, even when the item to be cleaned 23 is set in a place other than the tableware basket 24, such as when an accessory case for setting small items is provided inside the door 21, if the cleaning means 27 corresponding to the position is provided, A similar effect can be obtained.
[0080]
The present invention relates to a method of spraying in a washing machine provided with a water diverting means 37. The shape and size of the dishwasher main body 20, the opening and closing method of the door 21, the arrangement of the tableware 23, the arrangement of individual parts It does not limit etc. Moreover, in the Example, although the example of the dishwasher which has a drying function was shown, the same effect is acquired also in the dishwasher which does not accompany a drying function.
[0081]
(Example 2)
As shown in FIG. 9, the opening 42 of the valve body 41 of the water diversion means 37 is such that the two outflow portions 39 are opened simultaneously, and the other basic configuration is the same as that of the first embodiment. is there.
[0082]
Since the opening 42 supplies cleaning water to the two outflow portions 39 at the same time, the cleaning water is simultaneously jetted from the two cleaning means 27. When combined with the cleaning means 27 of FIG. 1, cleaning water is sprayed in the order of the cleaning means 27a and 27b, 27b and 27c, 27c and 27d, and 27d and 27a.
[0083]
Compared to the case where the water is injected only from one cleaning means 27 shown in the first embodiment, if the circulating water amount is the same, the injection amount from one cleaning means 27 is reduced, but the cleaning water is injected over a wide range at a time. In addition, since the spray time sprayed from one cleaning means 27 becomes long, the time during which cleaning water is sprayed on one tableware becomes long, and the swelling action of dirt is promoted, and the cleaning performance is improves. In particular, it is effective in cleaning terrible rice grains with sticking, and shortens the cleaning time. For this reason, it is possible to improve the cleaning performance while reducing the amount of water used.
[0084]
Further, by making a difference in the water power of the washing water jetted simultaneously from the plurality of washing means 27, the jetting strength (pressure difference, etc.) can be made, while on the other hand, while washing strongly with a high-pressure jet, Efficient cleaning is possible, such as washing away re-adhesion. In the water diversion means 37 of FIG. 9, the opening 42 of the valve body 41 opens the two outflow portions 39 non-uniformly so as to make a difference in the hydraulic power of the two injections. In this case, since the cleaning means with high water power is always replaced, the entire cleaning tank can be cleaned uniformly.
[0085]
It should be noted that the method of providing the difference in hydraulic power is not limited, and various methods are conceivable, such as always setting a high pressure to be injected from below or setting a high flow rate to be injected from above. As shown in FIG. 10, the fuel may be injected simultaneously from above and below. In this case, if the injection pressure from below is set higher than above, the high pressure from below will be lost without losing the injection from above. The cleaning power can be maintained by spraying.
[0086]
Moreover, if the flow rate injected from the upper side is set higher than the lower side, it can be washed away at a flow rate exceeding the jetting from the lower side, so that the effect of washing out the re-adhered matter is not affected, and high rinsing performance can be maintained.
[0087]
Further, it is not always necessary to spray from a plurality of cleaning means 27, and when three cleaning means 27 are provided and the water diversion means 37 of FIG. 11 is used, the injection is only 27a, 27a and 27b, 27b. 27c, 27c and 27a in this order, and there is a timing at which 27a is injected alone, but the same effect can be obtained.
[0088]
In addition, in the case of cleaning by circulating the same amount of water as in the case of using two rotating nozzles, which has been common in the past, the cleaning performance is drastically improved because it is sprayed from multiple directions. Needless to say.
[0089]
Example 3
As shown in FIG. 12, the cleaning means 27 cleans the table by providing two rotating nozzles below the tableware basket 24 and one fixed nozzle on the back.
[0090]
The basic configuration is the same as that of the first embodiment, and is provided with fixed cleaning means 27e having injection ports on the left and right sides of the back surface. Since the cleaning means 27 has three branches, the time for spraying from one cleaning means 27 is 1.3 times. For this reason, the energy injected from the bottom increases, and the cleaning power of potatoes with a large cleaning load increases.
[0091]
On the other hand, although the amount of injection from above decreases, in the case of a fixed nozzle, there is no leakage loss of the shaft portion as in the case of a rotating nozzle, and no pressure is required for injection from above. It is sufficiently possible to flow a flow rate (total amount) equivalent to 1, and cleaning water is sprayed from above to almost the entire area of the dish basket 24 in a substantially rectangular cleaning tank 22 while minimizing the number of cleaning means 27. Sufficient cleaning performance and rinsing performance can be ensured.
[0092]
Further, the shape of the cleaning means 27e is different in height on the left and right sides, and in particular, the object to be cleaned 23 near the center can be cleaned from directions with different angles and heights, and the cleaning performance can be further improved. Even if the cleaning means 27e is provided on the door side or the door, the same effect can be obtained.
[0093]
Further, as shown in the figure, when the cleaning path 43 is raised at the center on the back side of the cleaning tank 22, it is possible to provide a flow path having a size sufficient for water supply without interfering with the locus of the lower rotating nozzle. The necessary water power for each of the upper and lower sides can be secured. Further, since the number of the cleaning means 27 is reduced, there is an advantage that the cost can be reduced.
[0094]
Moreover, as shown in FIG. 13, even when the injection port is provided only on one side of the back surface, the effect can be obtained within the injection range, which is effective.
[0095]
Example 4
As shown in FIG. 14, the cleaning means 27 is provided with two rotary nozzles 27a, 27b below the tableware basket 24 and two rotary nozzles 27c, 27d between the cleaning baskets 24 provided above and below, It is to be washed.
[0096]
The basic configuration is the same as that of the first embodiment, and as shown in the figure, the tableware basket 24 is divided into two upper and lower stages, can accommodate a large capacity, and can be used for various usage forms of users. It has become. In this case, since the height of the apparatus is also high, the lower two cleaning means 27a and 27b are not sufficient, and it is effective to provide the cleaning means 27 between the upper and lower baskets. By using the means 37, it is possible to wash with a small amount of water while providing a large number of injection ports, which is effective.
[0097]
In addition, there is a method in which the four cleaning units 27 are sequentially sprayed, and a method in which the two cleaning units 27a and 27b sprayed from below are regarded as one cleaning path and sprayed simultaneously.
[0098]
【The invention's effect】
As described above, according to the present invention, it is possible to perform highly efficient cleaning with high cleaning performance and rinsing performance.
[Brief description of the drawings]
FIG. 1 is a partially cutaway front view of a dishwasher according to a first embodiment of the present invention.
[Figure 2] Side sectional view of the dishwasher
FIG. 3 is a cross-sectional view of the main part of the water diversion means of the dishwasher.
FIG. 4 is a diagram showing the relationship between the flow rate, pressure and hydraulic power of the dishwasher
FIG. 5 is a schematic view of the inside of the washing tub of the dishwasher as viewed from above.
FIG. 6 is a cross-sectional view of the main part of another example of the water dividing means of the dishwasher.
FIG. 7 is a cross-sectional view of an essential part of another example of water dividing means of the dishwasher.
FIG. 8 is a partially cutaway front view showing another arrangement example of the cleaning means of the dishwasher
FIG. 9 is a schematic diagram of the water diversion means of the dishwasher according to the second embodiment of the present invention
[Figure 10] Front view of the dishwasher with a part cut away
FIG. 11 is a schematic diagram of another example of the water diversion means of the dishwasher.
FIG. 12 is a partially cutaway front view of a dishwasher according to a third embodiment of the present invention.
FIG. 13 is a partially cutaway front view showing another arrangement example of the cleaning means of the dishwasher
FIG. 14 is a partially cutaway front view of a dishwasher according to a fourth embodiment of the present invention.
FIG. 15 is a sectional side view of a conventional dishwasher.
[Explanation of symbols]
22 Washing tank
23 Objects to be cleaned (tableware)
24 Tableware basket
26 Washing pump
27 Cleaning means (cleaning nozzle)
37 Water diversion means

Claims (5)

A dish basket for setting an object to be cleaned, a washing tank for storing the dish basket, a washing pump for pressurizing washing water, a plurality of washing means having an injection port for injecting washing water into the washing tank, A diversion means for switching the washing means to which the washing water from the washing pump is supplied, the diversion means passing through the washing water, an inflow portion into which the washing water flows, a casing having a plurality of outflow portions, and A valve body provided with an opening to be engaged, and an engagement portion provided in each of the valve body and the casing, and the valve body is advanced and retracted with respect to the outflow portion by intermittent operation of the cleaning pump. The valve body is rotated by the engagement of the valve body and the casing by the forward / backward movement of the valve body, so that the valve body rotates and the outlet portion for supplying the cleaning water coincides The parts are sequentially switched, and the outflow part and the washing part are Connecting means with wash path, said opening two of said outlet portion by the rotation of the valve body at the same time, and unevenly open, injected from a connected cleaning means to said outlet section dishwasher water power of the washing water is different to be.   The spray pressure of the cleaning water sprayed from the cleaning means having the spray port below the tableware basket is larger than the spraying pressure of the cleaning water sprayed from the cleaning means having the spray port above the bottom surface of the tableware basket. The dishwasher according to claim 1.   The flow rate of the cleaning water sprayed from the cleaning means having the spray port above the lower surface of the tableware basket is set to be larger than the flow rate of the cleaning water sprayed from the cleaning means having the spray port below the tableware basket. The dishwasher according to claim 1. The dishwasher according to any one of claims 1 to 3 , wherein the output of the washing pump differs depending on the washing means to which washing water is supplied. The dishwasher according to any one of claims 1 to 4 , wherein an injection time for the cleaning water to be sprayed differs depending on the cleaning means to which the cleaning water is supplied.

Images