JP4442447B2 - dishwasher - Google Patents

Description

  The present invention relates to a dishwasher for cleaning by irradiating washing water onto an object to be cleaned such as dishware.

  A conventional general dishwasher will be described with reference to FIG.

  In FIG. 5, the dishwasher main body 1 is provided with a washing tank 2, and water or hot water is supplied into the washing tank 2 by a water supply valve 3. A drain hole 4 is provided at the bottom of the cleaning tank 2, and a cleaning pump 5 that is connected to the drain hole 4 and is driven by a motor (not shown) is attached. The cleaning pump 5 supplies cleaning water to the inside of the cleaning tank 2. It is configured to circulate. The drain hole 4 is provided with a residue filter 6 for collecting residue.

  That is, the cleaning water supplied into the cleaning tank 2 passes through the residue filter 6, is sucked into the cleaning pump 5, and is supplied from the cleaning pump 5 to the cleaning nozzle 7 provided at the inner bottom portion of the cleaning tank 2. The washing water sprayed from the washing nozzle 7 circulates along a route of returning to the drain hole 4 again after washing the tableware 9 as the object to be washed. At this time, residues and the like dropped off from the tableware 9 are collected by the residue filter 6.

  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.

  However, in such a conventional dishwasher, the wash water is only sprayed from below for the objects to be washed such as dishes of various shapes used in general households, etc., all set in the dish basket 10 It was difficult to clean the tableware 9 sufficiently. Moreover, when there is no jet from the upper part of the washing tank 2, the tableware with a thread bottom, such as a cup and a soup bowl, has a problem that fine residue is easily accumulated on the thread bottom, and the entire rinse performance is insufficient. Had.

  In order to solve this problem, as shown in FIG. 6, there is also a dishwasher having a structure in which washing water is sprayed to the tableware 9 from multiple directions using a plurality of rotatable washing nozzles 13a, 13b, 13c, 13d. Proposed.

  In this type of dishwasher, when supplying cleaning water to all the cleaning nozzles 13a, 13b, 13c, and 13d at a time, a large amount of spray is required, so naturally the amount of water supplied to the cleaning tank 2 is not increased. must not. As a result, the temperature rise time of the cleaning water becomes longer due to the increase in the amount of water supply. As a result, the operation time is extended, the power consumption is increased, the amount of water used is increased, and the cleaning pump 5 is also required to be large. Therefore, a number of problems such as an increase in cost and an increase in noise and vibration caused by jetting a large amount of cleaning water at a time occur. Therefore, the water distribution means 14 for selectively switching the cleaning nozzle for supplying the cleaning water is provided. Some are used and efficiently washed from multiple directions with a small amount of water (for example, see Patent Document 1).

The water diversion means 14 is switched by driving a valve body (not shown) with an electric motor 15 to switch the discharge to the water channel 16 communicating with each of the plurality of cleaning nozzles 13a, 13b, 13c, 13d. In addition, there is a switch unit (not shown) that switches the position of the valve body by intermittent operation of the cleaning pump 11 without using an electric drive unit such as a motor.
JP 2001-218721 A

  However, in the configuration of the conventional dishwasher, it is necessary to supply cleaning water to all the cleaning nozzles 13a to 13d, and in order to supply cleaning water evenly to all the cleaning nozzles, the electric motor 15 is provided. The washing water is supplied by the diversion means 14 that is continuously driven or that intermittently operates the washing pump 5 at regular intervals to switch the switching means.

  However, in the actual washing operation of the dishwasher, the stains of the dishes 9 washed by the plurality of washing nozzles are not uniform. Although it is more effective to change the time), it was not possible as described above. In addition, it is difficult to adjust the frequency of jetting because it is not clear which dishes are dirty or light.

  In addition, when the tableware 9 to be cleaned is a small amount, even if the tableware 9 is set in the tableware basket 10 and an attempt is made to clean only that portion, only the cleaning nozzle at an arbitrary position cannot be used. Therefore, effective driving could not be performed. Moreover, it is necessary to limit the position of the tableware basket 10 in which the tableware 9 is set, and there is a problem that the usability of the dishwasher is deteriorated.

  Further, when foreign matter such as residue or toothpick is caught during the switching operation of the valve body of the water distribution means 14, the valve body is locked and cannot rotate, the water distribution means 14 does not operate, and a predetermined cleaning is performed. There was a problem that the operation of the dishwasher was terminated without performance.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and makes it possible to determine which cleaning means is being used from among a plurality of cleaning means, and is efficient in accordance with tableware dirt and the capacity of the tableware to be set. It is an object of the present invention to provide a dishwasher that can be easily cleaned, and that can quickly detect a failure due to the biting of foreign matter in the water distribution means and can easily cope with the case where the cleaning performance cannot be ensured.

In order to solve the above-described conventional problems, a dishwasher according to the present invention includes a washing tank that accommodates an object to be washed, a washing pump that pressurizes washing water, and the washing water that is disposed in the washing tank and jets the washing water. A plurality of cleaning means having an injection port, a water distribution means for switching a cleaning means for supplying cleaning water among the plurality of cleaning means, and connected to the downstream side of the cleaning pump and each of the plurality of cleaning means movable switching a casing of said diversion means having a plurality of outlet portion communicating, the outflow portion so as to supply the washing water in order to at least one of said plurality of cleaning means are incorporated in said diversion means A detection means for detecting a turbidity of the moving position of the movable member and the washing water, and the detection means includes a light emitting portion and a light receiving portion for receiving light from the light emitting portion on the outer periphery of the casing. Have, before The movable member has a shielding part that blocks the light of the light emitting part, and the detection means detects the turbidity of the cleaning water in the casing by the intensity of the light of the light emitting part received by the light receiving part, and The position of the movable member is detected by blocking the light of the light emitting unit by a shielding unit , and the detecting unit can determine which cleaning unit is used among a plurality of cleaning units. When the object to be cleaned is cleaned by the cleaning means, the dirt that has fallen from the object to be cleaned dissolves or mixes in the cleaning water, which changes the turbidity to determine which cleaning means is severe during use. Therefore, the cleaning means placed near the object to be cleaned can be used efficiently, for example, to be cleaned efficiently or set according to the dirt. To be cleaned Can or a valid washed with capacity. In addition, it is possible to detect a failure due to a foreign matter biting into a movable member or the like in the water distribution means, and it is possible to immediately determine that there is an abnormality when the cleaning performance cannot be ensured unlike the normal use state, and it is possible to deal with it. So it is very convenient to use .

  In the dishwasher of the present invention, the detection means can distinguish the cleaning means being used from among the plurality of cleaning means, so that the cleaning means can be efficiently used according to the dirt of the object to be cleaned, the capacity of the object to be cleaned, etc. In addition to being able to perform cleaning efficiently, it is possible to detect failures due to the inclusion of foreign matter in the water distribution means, so it is possible to respond immediately when cleaning performance cannot be ensured, and it is easy to use is there.

The first invention includes a cleaning tank for accommodating the object to be cleaned, the washing pump for pressurizing flush water, and a plurality of cleaning means having an injection port which is disposed in said cleaning tank for jetting the wash water, the the diversion having a diversion unit for switching the cleaning means for supplying the wash water out of the plurality of cleaning means, a plurality of outflow portion communicating with each of the plurality of washing means is connected to the downstream side of the washing pump A casing of the means, a movable member that is built in the water dividing means, and that switches the outflow part so as to supply the washing water to at least one of the plurality of washing means in order, a moving position of the movable member, and the Detection means for detecting the turbidity of the washing water, the detection means has a light emitting part and a light receiving part for receiving light from the light emitting part on the outer periphery of the casing, and the movable member is the light emitting part Shield that blocks light And the detecting means detects the turbidity of the cleaning water in the casing by the intensity of the light of the light emitting unit received by the light receiving unit, and the light of the light emitting unit is blocked by the shielding unit. The position of the movable member is detected , and the detecting means can determine which cleaning means is being used among the plurality of cleaning means, and when the object to be cleaned is cleaned by the cleaning means, Since the dirt that has fallen from the washed product is dissolved or mixed in the washing water, it is possible to determine which cleaning means is severe during use by detecting the change in turbidity by using the detection means. Efficient cleaning can be performed according to dirt, such as by efficiently using cleaning means placed near the object to be cleaned, and effective cleaning can be performed depending on the capacity of the object to be set. . In addition, it is possible to detect a failure due to a foreign matter biting into a movable member or the like in the water distribution means, and it is possible to immediately determine that there is an abnormality when the cleaning performance cannot be ensured unlike the normal use state, and it is possible to deal with it. So it is very convenient to use.

In the second invention, in particular, the shielding portion of the first invention is a shielding plate provided on the movable member . Which of the plurality of cleaning means is used and which cleaning means is used. If you use a single detection means, you can reliably detect both the position and the dirt with a simple configuration. When it is different, it can be determined that there is an abnormality, and the countermeasure can be taken .

  Embodiments of the present invention will be described below with reference to the drawings. However, the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a cross-sectional view of a dishwasher according to a first embodiment of the present invention, FIG. 2 is a perspective view of a water diversion means of the dishwasher, and FIG. 3 is a cross-sectional view of the water diversion means. In addition, the same code | symbol is attached | subjected about the same part as a prior art example, and the description is abbreviate | omitted.

  As shown in FIG. 1, each of the cleaning nozzles 13 a, 13 b, 13 c, and 13 d as a cleaning unit has a plurality of injection holes 13 e and injects the cleaning water pumped from the cleaning pump 5 through the water channel 16. The washing nozzles 13a and 13b are jetted from below the table basket 10, the washing nozzle 13c is jetted from the upper right side, and the washing nozzle 13d is jetted from the left side surface, and around the axis by the jet from the jet hole 13e. It is designed to rotate.

  The water distribution means 17 is installed in the discharge path 5a of the cleaning pump 5 and selectively switches the cleaning water supplied to the cleaning nozzles 13a, 13b, 13c, and 13d as shown in FIGS. It is configured.

As shown in FIGS. 2 and 3, the casing 20 of the water diverting means 17 has a substantially cylindrical shape, and its axial direction is arranged in a substantially vertical direction, and communicates with the downstream side of the cleaning pump 5. An inflow portion 18 into which the cleaning water pressurized in 5 flows is provided at the lower end portion of the casing 20, and four outflow portions 19 respectively communicating with the four cleaning nozzles 13 a, 13 b, 13 c, and 13 d are provided on the upper surface of the casing 20. It is installed in. In the casing 20, a valve body 21 is rotatably provided as a movable member for switching the cleaning water, and an opening 22 through which the cleaning water is passed is provided in the valve body 21. Here, the valve body 21 has a substantially planar shape, and the opposing surfaces of the outflow portion 19 and the valve body 21 also have a planar shape.

  The four outflow portions 19 communicate with the cleaning nozzles 13a, 13b, 13c, and 13d through the cleaning path 23 and the water path 16, respectively. And in order to switch the outflow part 19 connected with the opening part 22, it has the drive motor 24 as a drive means which rotationally drives the valve body 21, and the motor shaft 25 of this drive motor 24 is fitted to the valve body 21. Yes.

  What is important in the present embodiment is that the water diversion means 17 includes a detection means 26 that detects both the position of the valve body 21 and the turbidity. Specifically, the detection unit 26 includes a light emitting unit 27 that is formed of a light emitting diode or the like and that emits light, and a light receiving unit 28 that receives light from the light emitting unit 27.

  Moreover, the light emitting unit 27 and the light receiving unit 28 are provided so as to face each other and be on the same straight line, and both the light emitting surface 27 a of the light emitting unit 27 and the light receiving surface 28 a of the light receiving unit 28 face the inside of the casing 20. Yes. Further, a shielding plate 29 that blocks light generated by the light emitting unit 27 is provided on the valve body 21 provided in the casing 20.

  2 and 3 are diagrams conceptually showing the casing 20, and in actuality, the casing 20 is composed of parts (not shown) divided into two parts in the vertical direction. It is formed by joining.

  The operation of the water dividing means 17 in the above configuration will be described.

  The valve body 21 and the motor shaft 25 are fitted together, and the valve body 21 is rotated by the drive motor 24, and cleaning water is supplied to the outflow portion 19 that coincides with the opening 22 provided in the valve body 21. Wash water is jetted from one of the wash nozzles 13 a, 13 b, 13 c, and 13 d communicating with 19.

  By rotating the valve body 21, the opening 22 moves and the outflow portion 19 for supplying the cleaning water is sequentially switched, and the cleaning water can be ejected in the order of the cleaning nozzles 13a, 13b, 13c, and 13d. The operation of the detecting means 26 used for the water diverting means 17 is usually when the light generated by the light emitting part 27 is received by the light receiving part 28, but when the valve body 21 rotates and reaches a predetermined position. The light is blocked by the shielding plate 29 provided on the valve body 21. As a result, no light is detected by the light receiving unit 28, so that a predetermined movement position of the shielding plate 29 can be detected.

  Moreover, since the water diverting means 17 can detect the position of the valve body 21 by the detecting means 26, the opening 22 stops the drive motor 24 at an arbitrary position of the outflow portion 19 for an arbitrary time. By intermittently driving, it is possible to switch the ejection of cleaning water to the cleaning nozzles 13a, 13b, 13c, and 13d. By adopting such a configuration, it is possible to set the position of the cleaning nozzle and the ejection time that are selectively used according to the situation. In addition, the cleaning water is not supplied to the four cleaning nozzles 13a, 13b, 13c, and 13d at the same time, but the cleaning water is sequentially sent to the arbitrary tableware 9 without increasing the water supply amount. On the other hand, washing water can be jetted from a plurality of directions.

Further, when the turbidity of the washing water changes, the intensity of light received by the light receiving unit 28 also changes. Therefore, the turbidity of the washing water can be determined from the change of light received by the light receiving unit 28. That is, when washing is performed, residues removed from the tableware 9 are mixed with the washing water, so that the oil stains are dissolved in the washing water and the washing water becomes turbid. The turbidity can be determined by decreasing the strength of the.

  Further, since the washing water is circulated and used, it can be determined at which valve body 21 the turbidity increases, that is, the contamination becomes severe. In addition, even in a state in which the cleaning is proceeding, the determination can be made by the magnitude of the change in turbidity before and after each cleaning. Here, the detection means 26 detects only the time when it passes through this position, but all the cleaning nozzles 13a, 13b, and the like are controlled from the control state such as the rotation time and stop time of the valve body 21. It is also possible to know the supply state and turbidity of the washing water to 13c and 13d.

  Therefore, the detection means 26 can determine which cleaning nozzle is used from among the plurality of cleaning nozzles 13a, 13b, 13c, and 13d, and which of the cleaning nozzles 13a, 13b, 13c, and 13d is used. Even if the dirt is terrible, it can be detected with a simple configuration by a set of detection means 26, that is, both the position of the cleaning nozzles 13a, 13b, 13c and 13d and the dirt can be reliably detected. The cleaning nozzle 13a for cleaning the highly dirty tableware 9 is jetted with a long washing water to efficiently use the cleaning nozzle that is desired to be used. Effective cleaning can be performed according to the capacity of the tableware 9 to be set.

  In addition, even if the tableware 9 is small, it is possible to determine where the tableware 9 set is dirty without having to set the tableware 9 and limit it to the tableware basket 10. The set position is limited and the usability does not deteriorate.

  As described above, energy can be concentrated and used in necessary portions, so that efficient cleaning can be performed, contaminants attached to the tableware 9 and the like can be cleaned in a short time, and high efficiency. The cleaning can be realized.

  Moreover, since the water dividing means 17 can set the washing nozzle to be used arbitrarily, when it is not necessary to inject washing water from all the washing nozzles 13a, 13b, 13c, and 13d, such as when the tableware 9 is small. For example, by setting the spraying time from the cleaning nozzle 13a that does not require spraying of the cleaning water to an extremely short time of about 1 second or less, the cleaning nozzle 13a is hardly sprayed and the necessary cleaning nozzles 13b, 13c, By jetting only from 13d, more efficient cleaning can be performed and the operation time can be shortened.

  In addition, the final rinsing can be performed from a washing nozzle 13c provided above the table basket 10, so that the adhesion of fine particles can be reduced as much as possible, and the washing performance can be further improved. .

  Further, whether or not the rinsing is properly performed can be judged from the turbidity of the washing water. If the rinsing is insufficient, the rinsing performance can be stabilized by adding the rinsing.

  Furthermore, since the valve body 21 is driven by the drive motor 24, the valve body 21 is reliably rotated, and the switching of the cleaning nozzles 13a, 13b, 13c, and 13d for supplying the cleaning water can be performed reliably. If the filter 6 is not securely set, foreign matter may be caught between the opening 22 and the outflow portion 19 when the cleaning water circulates with foreign matter such as residue and toothpick.

In this case, depending on the type of foreign matter, the valve body 21 may be locked and cannot be switched. In this case, since the washing water flows only to one washing nozzle, all the dishes 9 are not washed even when the operation is finished. Even in this case, in the water distribution means 17 in the present embodiment, the detection means 26 can detect that the valve body 21 does not come to the original switching position, so that it is determined that an abnormality has occurred. Can do.

  In this way, it is possible to detect a failure due to a foreign matter biting into the switching means of the water dividing means 17. In this case, the dishwasher main body 1 may automatically perform a return operation such as reversing the driving motor 24 or repeating forward and reverse rotation, or may stop the operation and notify the occurrence of an abnormality. Thereby, it can return to a normal state as the dishwasher main body 1, and can also notify a user that it cannot wash.

  In the above embodiment, the cleaning nozzles 13a, 13b, 13c, and 13d are provided at four locations, and all are rotatable nozzle systems. However, the present invention is not limited to four locations, and the table 9 in the tableware basket 10 is not limited. The number may be set according to the arrangement or the like.

  In addition, when the washing nozzles 13a, 13b, 13c, and 13d are rotatable as described above, the washing performance is improved. However, since the space occupied by the washing nozzles 13a, 13b, 13c, and 13d increases, Since the volume of the portion that accommodates 9 is reduced, it is also effective to make the cleaning nozzles 13c and 13d provided on the back surface and the upper side fixed, such as a system such as a rotating nozzle or a fixed nozzle, and the number of the injection holes 13e. Is not limited. Also, the installation position may be the back or front.

  In the above embodiment, only one cleaning nozzle is sprayed at a time among the plurality of cleaning nozzles 13a, 13b, 13c, and 13d. However, two openings 22 of the valve body 21 are provided. Alternatively, by providing more, a plurality of cleaning nozzles 13a, 13b, 13c, 13d, for example, cleaning nozzles 13a and 13b, cleaning nozzles 13b and 13c, cleaning nozzles 13c and 13d, cleaning nozzles 13d and 13a, 2 The nozzles may be ejected simultaneously from the cleaning nozzles, and their positions may be switched in order.

  Further, if one of the plurality of outflow portions 19 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 11, and the drainage pump 11 is installed. This eliminates the need for cost reduction and downsizing of the dishwasher.

  In the above case, when the cleaning nozzles 13a, 13b, 13c, and 13d are sequentially switched during the cleaning operation, the outflow portion 19 always passes through. Therefore, if the cleaning pump 5 is continuously operated, the water is drained during the cleaning. Therefore, in order to prevent this, the outflow portion 19 to which the cleaning water is supplied is detected, and the time for supplying the cleaning water to the outflow portion 19 for drainage is set to a very short time except during draining. By doing so, it is possible to prevent drainage outside the machine except during drainage. Alternatively, an on-off valve (not shown) may be provided in the middle of the drainage path to reliably prevent the washing water from draining outside the machine.

  In addition, although the shape of the dishwasher main body 1, arrangement | positioning of the tableware 9, and the shape and arrangement | positioning of other components were described concretely by the said embodiment, this invention is not limited by them.

  In the above embodiment, the detection means 26 is formed by one set of one light emitting portion 27 and one light receiving portion 28, but at a position corresponding to each cleaning nozzle 13a, 13b, 13c, 13d. A plurality of sets may be provided to detect the moving position of the valve body 21 and the turbidity of the washing water.

(Embodiment 2)
FIG. 4 is a cross-sectional view of the water diversion means of the dishwasher in the second embodiment of the present invention. Note that the same portions as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  In the present embodiment, as shown in FIG. 4, the detection means 32 for detecting the moving position of the valve body 21 is disposed outside the casing 20 and the magnet 31 fixed to a part of the outer periphery of the rotating valve body 21. The detecting unit 30 detects the position of the magnet 31. The detecting unit 30 is formed of a reed switch that operates by the magnetic force when the magnet 31 fixed to the valve body 21 comes close to the magnet 31.

  Thus, the magnet 31 is arranged inside the water distribution means 17 and the detection means 30 is arranged in the vicinity of the water distribution means 17. The detection unit 30 is disposed on the opposite side of the casing 20 from the drive motor 24 that generates a magnetic field.

  Of course, the detection unit 30 may be a Hall sensor or the like. In short, it is only necessary to detect the movement position of the valve body 21.

  FIG. 4 conceptually shows the structure of the water diverting means 17, and in actuality, the casing 20 is composed of two parts divided into upper and lower parts, and both parts are fitted and joined by welding or the like. The two parts, the member for attaching the detection unit 30 to the casing 20, and the like are formed of a non-magnetic material such as resin.

  Note that the upper and lower two parts constituting the casing 20 may be screwed using screws made of a non-magnetic material such as resin screws, ceramic screws, and copper-clad screws instead of welding. In addition, even if it uses the screw which consists of a magnetic body as long as it is located outside the detection operation range of the magnet 31 and the detection part 30, even if it uses, it can operate | move, but when it is in the operation range, it becomes impossible to fix with a screw. As in this embodiment, it is necessary to be a non-magnetic material. Further, when the cleaning tank 2 is made of resin, a part of the casing 20 can be integrally formed on the bottom surface of the cleaning tank 2.

  The operation and action of the dishwasher in the above configuration will be described.

  The arrangement of the tableware 9 usually set in the tableware basket 10 is almost determined. In other words, in the tableware basket 10, the table 9 (for example, a rice grain attached to a tea bowl or the like having a strong stain) is difficult to reach due to its shape. The shape of the moss tends to be less accessible to the washing water than the dishes) (for example, the upper part of the washing nozzle 13a in FIG. 1) and a dish that is relatively easy to get dirty. The position where the tableware 9 is set (for example, the upper part of the cleaning nozzle 13b in FIG. 1) is almost determined.

  Therefore, since the position of the valve body 21 can be detected by the detection means 32, the drive motor 24 is intermittently driven so that the opening 22 stops at an arbitrary position of the outflow portion 19 for an arbitrary time. . Specifically, when the cleaning water is supplied to the other cleaning nozzles 13b to 13d when the valve body 21 moves to a position where the cleaning water is supplied to the cleaning nozzle 13a located under the highly dirty tableware 9. In comparison, wash water is supplied for a long time.

  On the contrary, when the valve body 21 is moved to a position where the cleaning water is supplied to the cleaning nozzle 13c on the tableware, the purpose is to wash away the contaminants reattached on the tableware 9, so that Operate for a short time (supply cleaning water for a short time). Moreover, when the valve body 21 moves to the position where the cleaning water is supplied to the cleaning nozzle 13b or the cleaning nozzle 13d under the tableware 9 where the dirt is easily removed, the cleaning nozzle 13a is shorter than the case where the cleaning water is supplied. The operation is performed so that the cleaning water is supplied for a longer time than when the cleaning water is supplied to the cleaning nozzle 13c.

  Here, the detection unit 30 has only one position, and only detects when the magnet 31 passes through this position. However, all the cleaning nozzles 13a, from the control state such as the rotation time and stop time of the valve body 21 are detected. It is possible to know the supply state of the washing water to 13b, 13c, and 13d.

  As described above, according to the present embodiment, the detection unit 32 can determine the cleaning nozzle being used from among the plurality of cleaning nozzles 13a, 13b, 13c, and 13d, and has a simple configuration and one detection unit. 32, the positions of the cleaning nozzles 13a, 13b, 13c, and 13d can be reliably detected. Therefore, by selectively setting the position of the cleaning nozzle and the injection time depending on the position of the tableware 9 with different soiling conditions. The cleaning nozzles 13a, 13b, 13c and 13d can be used efficiently, and more effective cleaning can be performed depending on the capacity of the tableware 9 to be set.

  In this way, energy is concentrated on a necessary portion and used, so that efficient cleaning can be performed, contaminants attached to the tableware 9 and the like can be cleaned in a short time, and high-efficiency cleaning is realized. be able to.

  In addition, the cleaning water is not supplied simultaneously to the four cleaning nozzles 13a, 13b, 13c, and 13d at the same time, but the cleaning water is sequentially fed, so there is no need to increase the amount of water supply. Wash water can be jetted from a plurality of directions.

  Further, since the casing 20 and the valve body 21 of the water dividing means 17 are also made of a non-magnetic material, the detection unit 30 operates reliably without malfunctioning without blocking the magnetism of the magnet 31. Moreover, since the attachment of the detection unit 30 to the water distribution means 17 is also performed with a non-magnetic material, malfunction due to another magnetic field of the detection unit 30 can be prevented.

  Moreover, since the detection part 30 is arrange | positioned with respect to the casing 20 on the opposite side to the drive motor 24 which generate | occur | produces a magnetic field, the malfunctioning by the drive motor 24 can also be prevented.

  Further, it is possible to detect a failure due to the entry of foreign matter into the outflow part 19 and the valve body 21 or the opening part 22 of the water distribution means 17, and when it is impossible to ensure the cleaning performance unlike the normal case, it is determined as abnormal, You can do that.

  In addition, in the said embodiment, although the shape of the dishwasher main body 1, arrangement | positioning of the tableware 9, and arrangement | positioning of each component were demonstrated concretely, this invention is not limited by them. Moreover, in the said embodiment, although the magnet 31 and the detection part 30 were made into 1 set and the detection means 32 was comprised and it was made to detect the movement position of the valve body 21, each washing nozzle 13a, 13b, 13c, A plurality of detection means 32 may be provided in the water distribution means 17 at a position corresponding to 13d to detect the water distribution means 17.

  As described above, the dishwasher according to the present invention can efficiently use the cleaning means according to the dirt of the object to be cleaned such as tableware or the capacity of the object to be set, It can easily detect a failure or abnormal state due to foreign matter biting or the like, and can be widely applied not only to a dishwasher but also to various cleaning devices and equipment having a cleaning means.

Sectional drawing of the dishwasher in the 1st Embodiment of this invention Perspective view of water diversion means of the dishwasher Cross section of the same water diversion means Sectional drawing of the water distribution means of the dishwasher in the 2nd Embodiment of this invention Cross-sectional view of a conventional dishwasher Sectional view of a dishwasher showing another conventional example

2 Washing tank 5 Washing pump 9 Tableware (object to be washed)
13a to 13d Cleaning nozzle (cleaning means)
13e Injection hole 17 Water splitting means 19 Outflow part 21 Valve body (movable member)
24 drive motor 26, 32 detection means

Claims (2)

Among the plurality of cleaning means, a cleaning tank for storing an object to be cleaned, a cleaning pump for pressurizing cleaning water, a plurality of cleaning means provided in the cleaning tank and having an ejection port for ejecting the cleaning water a diversion means for switching the cleaning means for supplying cleaning water, a casing of said diversion means having a plurality of outflow portion communicating with each of the plurality of washing means is connected to the downstream side of the washing pump, the A movable member that is built in the water distribution means and that switches the outflow part so as to supply the washing water to at least one of the plurality of washing means in order, a moving position of the movable member, and a turbidity of the washing water. Detecting means for detecting , wherein the detecting means has a light emitting portion and a light receiving portion for receiving light from the light emitting portion on an outer periphery of the casing, and the movable member is a shielding portion for blocking light from the light emitting portion. And the inspection The means detects the turbidity of the washing water in the casing by the intensity of the light of the light emitting part received by the light receiving part, and determines the position of the movable member by blocking the light of the light emitting part by the shielding part. Dishwasher to detect . The dishwasher according to claim 1, wherein the shielding portion is a shielding plate provided on the movable member .

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