JP4400556B2 - Dishwasher - Google Patents

Description

  The present invention relates to a configuration of a dishwasher for home use or business use and a method for operating the same.

  The structure of the conventional dishwasher is demonstrated using FIG. 1 is a main body, 2 is a washing tank, 3 is a lid for opening and closing the opening of the washing tank, 4 is an exhaust port provided in the lid 3, and 5 is a tableware basket for storing tableware such as tableware (hereinafter referred to as tableware). Further, it is supported by a rail surface 7 provided on the side surface of the cleaning tank 2 through a rotating roller 6. 8 is a washing pump for pressurizing the washing water, and 9 is a washing nozzle installed below the washing tank 2, and the washing water pressurized by the washing pump 8 is sprayed from below into the tableware stored in the tableware basket 5. To do. Reference numeral 10 denotes a drainage pump for discharging the cleaning water stored in the cleaning tank to the outside of the apparatus. Reference numeral 11 denotes a control device that controls the operation of the cleaning pump 8, the drainage pump 10, and the like. 12 is a water supply hose and 13 is a drainage hose. Reference numeral 14 denotes a heater used for heating cleaning water and heating air during drying, and is provided at the bottom of the cleaning tank 2. Reference numeral 15 denotes a blower for drying.

  When washing dishes, the dishes are stored in the dish basket 5 of the washing tub 2, and detergent is put in to start operation. When the operation is started, first, a water supply step of supplying a predetermined amount of cleaning water to the cleaning tank 2 is performed so that the operation of the cleaning pump 8 pressurizing the cleaning water is stabilized. The cleaning pump 8 has a centrifugal blade (not shown) and an electric motor (not shown) for driving the centrifugal blade. Subsequently, a main washing process is performed in which the washing water pressurized by the washing pump 8 and heated by the heater 14 is jetted from the jet 16 of the washing nozzle 9 together with the detergent. At this time, the washing water is jetted vertically or obliquely upward from the jet nozzle 16 of the washing nozzle 9. Further, the cleaning nozzle 9 is rotated substantially horizontally by the jet reaction force. The tableware is washed by the action of the collision force, detergent, heat, etc. of the washing water sprayed from the washing nozzle 9 rotating in this way.

  After passing through the main washing process for a predetermined time, the process enters a draining process in which cleaning water containing dirt washed off from tableware and the like is discharged to the outside by the drainage pump 10. Subsequently, a water supply process for newly supplying cleaning water, a rinsing process for spraying cleaning water from the cleaning nozzle 9 in order to rinse the dishes contaminated with detergents and residual vegetables (stained dishes are also called residual vegetables), The draining step is continuously repeated four times to complete the cleaning step. The final rinsing step is called a heating rinsing step in which the washing water temperature is raised to about 70 ° C., and the tableware is rinsed with hot water. And the main washing process and the rinse process which performs several rinses are called a washing process.

  Subsequently, air is sent from the outside of the machine into the washing tub 2 by the blower 15 through the blow duct 17 to the washing tub 2 through the blower opening 18, and the heater 14 is operated intermittently to produce hot air. A drying process for evaporating water droplets adhering to is performed.

  The following proposals have been made as cleaning methods for improving the cleaning performance using a plurality of cleaning nozzles. For example, as shown in JP-A-5-305050, a method for injecting cleaning water from multiple directions with a cleaning mechanism comprising one cleaning pump and a plurality of cleaning nozzles, or as shown in JP-A-5-176875. In addition, a system using a plurality of cleaning pumps and a plurality of cleaning nozzles has been proposed.

  Further, as shown in JP-A-6-30853, a configuration in which a three-way valve is frequently used to divide water has been proposed.

Furthermore, as shown in Japanese Patent Laid-Open No. 11-19019, there has also been proposed a water diversion switching configuration in which the floating at the start of the cleaning pump is linked to the rotation direction of the cleaning nozzle.
JP-A-5-305050 JP-A-5-176875 Japanese Patent Laid-Open No. 6-30853 JP-A-11-19019

  However, the conventional dishwasher has the following problems. For example, in the configuration shown in JP-A-5-305050, since water is sprayed from a plurality of cleaning nozzles at the same time, the amount of water supplied in the cleaning tank must be increased. This is because when the amount of water supply is insufficient, air enters the cleaning pump, resulting in an air stagnation state, and the discharge performance of the cleaning pump is rapidly reduced, making it impossible to clean the dishes. In this case, it is necessary to increase the amount of water supply according to the number of cleaning nozzles, but the temperature rise time of the cleaning water becomes longer, resulting in longer operation time, increased power consumption, increased water consumption, Since a large washing pump is required, it has a number of problems such as an increase in running cost and an increase in noise and vibration caused by injecting a large amount of washing water at a time.

  Further, in the configuration shown in Japanese Patent Laid-Open No. 5-176875, a washing pump is required for each washing nozzle, and not only the problem due to an increase in the amount of water supply, but also the volume of the mechanism part occupying the entire dishwasher increases. There have been problems such that the necessary volume cannot be secured sufficiently, or the dishwasher body becomes larger than necessary.

  The configuration shown in Japanese Patent Laid-Open No. 6-30853 is a configuration used for a dishwasher that handles washing water mixed with leftovers and foreign matters, and it is difficult to ensure operational reliability or when the number of water distribution channels increases. There have been problems such as an increase in the number of way valves, generation of unusual noise during valve operation, and an increase in cost.

  Furthermore, the configuration disclosed in Japanese Patent Laid-Open No. 11-19019 has a problem that it is difficult to exhibit a predetermined cleaning performance due to low operation reliability because of a mechanism that switches only by water pressure.

  In addition, a mechanism part is a component for implement | achieving washing | cleaning and drying arrange | positioned at the washing tank lower part etc., and is a general term for a washing | cleaning pump, a drainage pump, an air blower, a control apparatus, etc.

  In order to solve the above-described conventional problems, the present invention includes a water diversion unit having a rotary diversion unit that switches a discharge path to a cleaning unit, and a control unit that controls the water diversion unit and the like, and the water diversion unit Has a rotational position detection means for discharging cleaning water from a specific cleaning means, the rotational position detection means has a fixed position sensor and a rotation detection disk, and the control means is the rotational position. The cleaning water is jetted from the specific cleaning means by the detection means.

  Thereby, since it is a water-saving amount, since washing water is sprayed with respect to tableware from multiple directions, a high washing | cleaning performance is acquired.

  The dishwasher of the present invention can obtain high cleaning performance with a reduced amount of water.

  The first invention includes a tableware basket for storing tableware, a cleaning tank for storing the tableware basket, a lid for closing the opening of the cleaning tank, a cleaning pump for pressurizing cleaning water, and a plurality of cleaning means. And a water diversion means provided between the washing pump and each washing means and having a rotating water diverting section that switches a discharge path to the washing means while being rotated by a driving motor, and the water diversion means, etc. Control means for controlling, the water diversion means has a rotation position detection means for discharging the wash water from the specific washing means, the rotation position detection means, the rotation position detection means, a fixed position sensor, a rotation detection disk, The control means is configured to inject cleaning water from a specific cleaning means by the rotational position detecting means.

  According to the present invention, the cleaning water discharged from the cleaning pump can supply the cleaning water to any cleaning means while switching the discharge path to each cleaning means, so that the dishes are washed without increasing the amount of water supply. Is. Therefore, since the cleaning water is sprayed from a plurality of directions to the tableware while the amount of water is reduced, high cleaning performance can be obtained.

  In the second aspect of the invention, in particular, the rotational position detecting means of the first aspect of the invention is provided with a rotational angle detection sensor for detecting the rotational angle of the rotational diversion part.

  In the third aspect of the invention, in particular, the rotational position detection means of the first or second aspect of the invention comprises a sensor constituted by an optical sensor.

  In the fourth aspect of the invention, in particular, the rotational position detecting means of the first or second aspect of the invention comprises a sensor constituted by a limit switch.

  In the fifth aspect of the invention, in particular, the rotational position detecting means of the first or second aspect of the invention comprises a sensor constituted by a magnetic sensor.

  Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1)
1 is a cross-sectional view of a dishwasher according to a first embodiment of the present invention. FIG. 2 is a partial cross-sectional view showing the structure of the water dividing means of the dishwasher and the flow of washing water. FIG. 3 is an exploded perspective view showing a water distribution structure of the dishwasher. Moreover, FIG. 4 is a fragmentary sectional view which shows the switching part of the dishwasher. FIG. 5 is a diagram showing the jetting power of the water jetted by each washing means during one rotation of the water diversion means of the dishwasher. FIG. 6 is a perspective view showing the configuration of another cleaning means of the dishwasher. FIG. 7 is a perspective view showing the configuration of another cleaning means of the dishwasher. FIG. 8 is a perspective view showing the configuration of another cleaning means of the dishwasher. FIG. 9 is a perspective view showing the structure of another cleaning means of the dishwasher. FIG. 10 is a perspective view showing the configuration of another cleaning means of the dishwasher. Moreover, FIG. 11 is a perspective view which shows the structure of the other washing | cleaning means of the dishwasher.

  In FIG. 1, 21 is a main body, 22 is a washing tank, 23 is a lid for opening and closing the opening of the washing tank, 24 is an exhaust port provided in the lid 23, 25 is a tableware basket for storing tableware, and a rotating roll The rail 26 is supported by a rail surface 27 provided on the side surface of the cleaning tank 22. 28 is a washing pump for pressurizing washing water, 29 is a washing nozzle (washing means) installed on the bottom surface of the washing tank 22, and the washing water is rotated from a plurality of jets 17 to the tableware stored in the tableware basket 25. While spraying. Similarly, 30 is a cleaning nozzle (cleaning means) installed above the cleaning tank 22, 31 is a cleaning nozzle (cleaning means) installed on the back of the cleaning tank 22, and 32 is installed on the left side of the cleaning tank 22. It is a cleaning nozzle. Although not shown, there are also cleaning nozzles (cleaning means) that spray the cleaning water while rotating on the right side of the cleaning tank 22, and a total of five cleaning nozzles (cleaning means) are provided. The cleaning pump is arranged vertically, and the cleaning pump water supply port 103 is provided at the lowermost part of the cleaning pump. The cleaning pump discharge port 36 is provided above the cleaning pump water supply port 103 and protrudes substantially in the horizontal direction. In addition, a water distribution outlet 44 is provided at a position higher than the cleaning pump outlet 36. 33 is a drainage pump for discharging the wash water stored in the wash tank 22 to the outside of the machine. Reference numeral 34 denotes a heater used for heating cleaning water and heating air during drying, and is provided at the bottom of the cleaning tank 22. Reference numeral 35 denotes a water diversion device (a water diversion unit) provided in a discharge path 37 that communicates the cleaning pump discharge port 36 with each cleaning nozzle, and sequentially supplies the cleaning water to each cleaning nozzle. Reference numeral 38 denotes a control device (control means) that controls the operation of the cleaning pump 28, the drainage pump 30, the water diversion device 35, and the like. The cleaning nozzle 29, the cleaning nozzle 30, the cleaning nozzle 31, the cleaning nozzle 32, and the right side cleaning nozzle (not shown) constitute a cleaning means. An operation unit 76 includes a power switch (not shown) and a start switch (not shown). Although the cleaning pump is described in the vertical arrangement in this embodiment, the effects of the invention in the present embodiment can be obtained in the horizontal arrangement or in other cases.

  2 and 3, 39 is a water guiding portion (water diverting means) that guides the cleaning water pressurized by the cleaning pump, and 40 is a discharge port 41 (switching portion) that discharges the cleaning water guided from the water guiding portion 39. Is a rotating water diversion unit (switching unit) provided on a substantially cylindrical side surface, and rotates with the driving motor 42 (switching unit) as a driving source. Reference numeral 43 denotes a substantially cylindrical water separator (water separator) having a water separator outlet 44 (water separator) that includes the rotating water separator 40 and communicates with the five discharge passages 37. Reference numeral 45 denotes a rotating shaft (switching unit) that connects the driving shaft 80 (switching unit) of the driving motor 42 and the rotating water diverting unit 40. An oil seal 46 (switching unit) is provided.

  Further, the rotation shaft 45 has a rotation angle detection slit (supply control means) 50 and a fixed position detection slit (rotation position detection means) 51 on the outer peripheral portion thereof (rotation position detection means, supply control means). The rotation angle of the rotation water diversion unit 40 can be detected by a rotation angle detection sensor (supply control means) 47 (sensor using light reception / emission) fixed to the water conveyance unit 39 with the axis 67 fixed coaxially. Reference numeral 48 denotes a fixed position sensor (rotation position detecting means, a sensor using light reception / emission) for aligning the hole positions of the discharge port 41 and the water distribution discharge port 44. It is provided at a position that matches the hole of the water discharge port 44. The rotational position detecting means includes a fixed position sensor 48, a fixed position detecting slit 51, and a rotation detecting disk 67. The supply control means includes a fixed position sensor 48, a fixed position detection slit 51, a rotation detection disk 67, a rotation angle detection sensor 47, and a rotation angle detection slit 50.

  By using the above two sensors 47 and 48, the cleaning water can be discharged from the specific cleaning means, and the control means can know which discharge port 41 and the diversion water discharge port 44 coincide with each other. It is. In addition, the fixed position detecting slit 51 is used while the rotation detecting disk 67 rotates, while both the rotation angle detecting sensor 47 and the fixed position sensor 48 detect light, or in a state where light is not detected. It is arranged at a position that only happens once. Further, the plurality of rotation angle detection slits 50 provided in the rotation detection disk 67 are arranged at positions where the holes of the water diversion outlet 44 and the holes of the discharge outlet 41 are aligned. With such an arrangement, the control device determines that only the rotation angle detection sensor 47 detects light or no longer detects the time when the hole positions of the discharge port 41 and the water diversion port 44 match. When both the rotation angle detection sensor 47 and the fixed position sensor detect light or no longer detect light, it is determined that the rotation water diversion unit 40 has come to a fixed position. Reference numeral 49 denotes a drive motor support frame (water diverting means) for fixing the drive motor 42 to the water guide section 39. As for the support of the driving motor 42, it is also possible to integrally form the driving motor supporting frame 49 in a state where the driving motor supporting frame 49 is positioned on the water guide portion 39.

  Note that the switching unit 101 that sequentially divides the cleaning water into each cleaning nozzle includes a rotating water dividing unit 40, a discharge port 41, a driving motor 42, a rotating shaft 45, an oil seal 46, and a driving motor support. And a driving frame 80. Further, the water guide unit 39, the water splitting out unit 43, the water splitting discharge port 44, and the switching unit 101 are configured by water splitting means (= water splitting device 35).

  Further, although the number of discharge ports 41 has been described as one in this embodiment, the effect of the present invention can be obtained if the number is less than the number of discharge paths 37.

  Further, in the present embodiment, the position of the discharge port 41 is described with a configuration provided on the side surface of the rotary water diversion unit 40. However, the discharge port 41 is provided on a surface substantially perpendicular to the rotation shaft 45, and The effect of the present invention can be obtained even with a configuration in which the water diversion outlet 44 provided in 43 is also provided at a position facing the discharge opening 41.

  Further, the driving motor 42 described in the present embodiment uses a DC motor that is easily controlled by the control device 38 so that the rotational speed can be changed and the rotational direction can be easily switched. It is also possible to use a gear motor, a stepping motor, or a direct current motor to which a transmission is added in consideration of use in the above. Furthermore, depending on the control method and the size of the motor, an AC motor or an ultrasonic motor may be used.

  Further, in the description of the present embodiment, in order to detect the fixed position of the rotating water diversion unit 40 and the rotation angle at the time of rotation, an optical sensor using a light receiving and emitting element, and a rotation detection for passing and blocking light. Although it is realized by a combination of the disks 67, when a limit switch is used instead, when both an optical sensor and a limit switch are used, a magnetic sensor or an ultrasonic sensor may be used. Further, the same effect can be realized by using a stepping motor that can also control the rotation speed and the switching of the rotation direction, or a motor with an encoder (not shown).

  Further, a gap necessary for maintaining the rotation is provided between the rotating water separating unit 40 and the water separating taking-out unit 43 even if foreign matter is mixed. However, a seal member (not shown) using a rubber or resin, Teflon (registered trademark) seal material or the like to eliminate leakage water between the water diversion outlet 44 and the discharge outlet 41. If the gap is configured in the gap, it is possible to eliminate leakage of water other than the discharge of the cleaning nozzle. As a result, water supply volume can be further reduced, cleaning performance can be improved by increasing cleaning discharge pressure, cleaning water heating time can be shortened, operation time can be reduced, power consumption can be reduced, and water consumption can be reduced. realizable.

  FIG. 4 shows that the water diversion outlets 44 provided on the side surfaces of the rotating water diversion unit 40 and the discharge ports 41 communicating with the respective cleaning nozzles are sequentially matched, and the cleaning water is sequentially supplied to the respective nozzles. It shows how to do.

  FIG. 5 shows how the spray force of each cleaning nozzle changes during one rotation of the rotating water diversion unit 40.

  6, 7, 8, 9, and 10 show combinations of the configuration of the cleaning nozzle provided at the tip of the water diverter (not shown). It cleans tableware and cooking utensils. Specifically, in a drawer type dishwasher, a combination of rotating nozzles 68, 69, and 97 (FIG. 6) that injects cleaning water while rotating, and a combination of a rotating nozzle 52 and a rod-shaped nozzle 53 that injects cleaning water while rotating ( 7), a combination of the rotating nozzle 54 and the fixed nozzle 55 (FIG. 8), and when the rotating nozzles 56, 57 are configured in two upper and lower stages (FIG. 9), the upper two 61, 62 and the lower two 63 , 64, when 65 and 66 rotating nozzles are provided on each of the left and right side surfaces (FIG. 10), when only a plurality of fixed nozzles 58, 59 and 60 are configured (FIG. 11), Various combinations are possible depending on the size and shape of the washing tank, or the conditions such as one or two cups, such as combining nozzles (not shown). In the cleaning method that the effect of the present invention is obtained.

  Next, the operation and action of the water diversion device 35 (water diversion means) which is a characteristic configuration of the present embodiment will be described. First, the cleaning water pressurized by the cleaning pump 28 passes through the water guide unit 39 and is discharged from a discharge port 41 provided in the rotating water dividing unit 40. At this time, the rotary water diversion unit 40 is continuously rotated at a low speed by the driving motor 42, and the discharge ports 41 are sequentially aligned with the five water distribution discharge ports 44 in sequence. When the hole positions match, each hole passes through the discharge path 37 and is sent to each cleaning nozzle. That is, the cleaning water is sequentially sent to the cleaning nozzle 29 (lower surface), the right side cleaning nozzle (not shown), the cleaning nozzle 31 (back surface), the cleaning nozzle 32 (left side surface), and the cleaning nozzle 30 (top surface). . In addition, the control device 38 can be set to an arbitrary position for a certain period of time with respect to all the cleaning nozzles in one place in the case of operation using the fixed position sensor 48 and in the operation using the fixed position sensor 48 and the rotation angle detection sensor 47. An operation of injecting cleaning water from the cleaning nozzle can also be performed. To explain the operation, the rotary diversion unit 40 has a diversion port 44 and a discharge port 41 communicating with the cleaning nozzle 29 (lower surface) by the functions of the fixed position sensor 48 and the rotation angle detection sensor 47 provided. At the coincidence, one end is stopped, and cleaning water is jetted from the cleaning nozzle 30 for a certain period of time. Then, in order to supply cleaning water to the cleaning nozzle 29 next, the rotating water diversion unit 40 rotates the discharge port 41 until it coincides with the water distribution discharge port 44 communicating with the cleaning nozzle 29. Then, after stopping for a certain injection time, a series of operations such as rotating the rotating water diversion unit is performed again. Therefore, as shown in FIG. 5, regarding the injection force of each cleaning nozzle and the movement of the rotating water dividing unit 40, when the rotating water dividing unit 40 is continuously rotated, the discharge port 41 and the water dividing discharge port 44 Since the hole area gradually changes, the injection force continuously changes. However, when a temporary stop is applied in the middle, the maximum injection force can be maintained for a certain period of time.

  In this way, by switching the discharge path of the cleaning water discharged from the cleaning pump by the water diverter, the plurality of cleaning nozzles are operated with the cleaning pump capacity and the water supply amount necessary for operating the single cleaning nozzle. be able to.

  According to this configuration, when the conventional cleaning with only a single nozzle is changed to a plurality of cleaning nozzles to improve the cleaning performance, it can be realized using a cleaning pump having the same capacity as the conventional one. . In addition, since it is not necessary to increase the amount of water supply at this time, the operation time does not become long, and a dishwasher that realizes high washing performance while saving energy and saving water can be provided.

  In the case of a configuration using a plurality of cleaning nozzles, since cleaning water must be supplied to each cleaning nozzle at a time, a large cleaning pump and a large amount of water supply are required.

  However, according to the configuration of the present invention, a smaller washing pump can be used and the amount of water supply can be greatly reduced. As a result, it is possible to provide a dishwasher that achieves downsizing of the product due to downsizing of the mechanism part or expansion of tableware capacity, significant energy saving, water saving, and shortening of operation time.

  In addition, in the conventional cleaning method of spraying from the top and bottom simultaneously, the original performance may not be able to be exhibited due to the interference of the water flow on the tableware. It can contribute to cleaning efficiently without interfering with each other.

  Further, in this embodiment, the control device controls so that the cleaning nozzle for finally spraying the cleaning water is sprayed from the cleaning nozzle provided on the top surface or the side surface of the cleaning tank in the main cleaning process or the rinsing process. . First, the configuration will be described. The position of the fixed-position detection slit 51 provided in the rotation detection disk 67 is set at the water discharge outlet 44 for discharging cleaning water to the discharge nozzle 41 and the cleaning nozzle 30 provided above the cleaning tank 22. It is provided to match.

  In the rinsing process, the cleaning water is sequentially ejected from each cleaning nozzle. When the end time of the process comes, the control device 38 rotates the rotational speed and position of the rotating water diversion unit 40, and a certain ejection time from above. In consideration of the above, the rotation water diversion unit 40 is temporarily stopped based on the signal from the fixed position sensor 48, and the cleaning water is controlled to be jetted from above for a predetermined time. An example of a specific injection method is shown below.

  Usually, in the operation program, the main washing time and the rinsing time are set by both the time and the washing water temperature. Moreover, the heating rinse process performed at the end of a rinse process performs the driving | running which is complete | finished when the washing water temperature becomes about 70 degree | times. The rinsing process includes a rinsing process that is managed in a time of 2 to 3 times, and a heating rinsing process that controls the cleaning water temperature up to about 70 degrees and that is controlled at the cleaning water temperature. Therefore, in the main washing process and the rinsing process managed by the time, the operation is started after moving the rotary diversion unit 40 to a fixed position first, and the injection time and the stop time of each cleaning nozzle of the rotary diversion unit 40 are set. A method is conceivable in which the control device controls such that it is set and sprayed from a cleaning nozzle provided on the top surface or side surface at the end of operation. In the heating rinsing process, since the amount of water supplied and the temperature of the cleaning water at the time of water supply fluctuate, the end time of heating rinsing cannot be specified, but the fixed position of the rotating water diverter is sprayed from the cleaning nozzle provided on the top or side. A method of ending the operation when the cleaning water temperature rises to near the temperature at which the heating rinsing is completed is set. Alternatively, after the temperature rises, a method may be considered in which spraying is performed from a cleaning nozzle provided on the top surface or the side surface and then the process is terminated. Further, in the process of stopping the operation by time management, the operation of the present embodiment can also be realized by changing the injection time or the stop time during operation in accordance with the end time. In addition, what is necessary is just to determine a realization method according to the driving | operation characteristic of arbitrary processes regarding these driving | running operations.

  Therefore, according to the present invention, since the washing water is sprayed from above on the tableware at the end of any step, the contaminants can be easily separated from the tableware and can be reliably rinsed. In addition, a dishwasher with improved cleaning performance can be provided, such as re-adhesion of the glass to the thread bottom, and fine leftovers attached to the tableware can be discharged out of the machine early in the cleaning process. It can be done.

  In addition, regarding the process of rinsing from above, the effect can be obtained if it is performed at least several times in the rinsing process, but if it is performed in all the rinsing processes and the main washing process, it is more effective. Needless to say.

  Further, regarding the ejection time of each cleaning means, in the configuration of the present invention, the control device controls the rotation angle detection sensor 47, the fixed position sensor 48, and the driving motor 42, so that the cleaning water of each cleaning nozzle is controlled. The injection time can be arbitrarily set. When cleaning tableware, there are some that are easy to clean depending on the type of contamination attached to the tableware, and some that require time to clean. For example, rice grains attached to a tea bowl are difficult to remove, and dirt from a drinking cup is relatively easy to remove. Moreover, the dish basket of the dishwasher is designed to limit the setting position to some extent according to the type of these dishes, and the jet from the washing nozzle is also designed accordingly.

  However, the present invention can be applied to a case where a cleaning nozzle that sprays cleaning water toward a position where a teacup or the like that is difficult to remove dirt is set is set to a long time or a small container that easily removes dirt by spraying from above. Considering the ease of removing dirt, such as making the injection time longer, and the injection direction, etc., that is easily removed due to the arrangement of dishes, the corresponding injection time of the cleaning nozzle can be set. As an example, the spraying time is 30 seconds for a place where it is difficult to remove dirt, the spraying time is 5 seconds for a place where dirt is easily removed, and 10 seconds for other places.

  In this way, by performing the operation with the optimal jetting time according to the characteristics of the dishes and dirt, in the washing of the dishwasher in which dishes with different difficulty of removing dirt are mixed, there is no more leftover and more efficiently. It is possible to provide a dishwasher capable of obtaining cleaning performance.

  Moreover, the injection time in the main washing process and the rinsing process will be described. In the present invention, as described above, the time during which the discharge port 41 is stopped once is sprayed from an arbitrary cleaning nozzle for a certain period of time, and in particular, the spraying time in the main washing process is the first spraying time. The injection time in the process is defined as the second injection time.

  In this invention, a control apparatus performs the driving | operation which makes 1st injection time longer than 2nd injection time. In the first place, in the main washing process, in order to peel off the contaminants adhering to the tableware, cleaning is performed by combining the cleaning power such as chemical power and heat with the detergent. Higher washing performance can be obtained by applying a large amount of washing water at a time than washing by dividing the amount of water into several times. On the other hand, the process of rinsing is focused on washing out fine dirt adhered to the dishes and the washing tub by repeating the spray of washing water and several times of drainage and water supply in a short time. It is possible to rinse in a shorter time reliably by spraying wash water uniformly from multiple directions. That is, it is better to perform cleaning reliably while taking a long first injection time, and to increase the number of times of injection from each cleaning nozzle although the second injection time is short. As an example, the first injection time is 10 seconds and the second injection time is 5 seconds.

  Therefore, according to this invention, the dishwasher which implement | achieves high washing | cleaning performance can be provided by performing the washing | cleaning which set the optimal jetting time in each said washing | cleaning.

  It should be noted that the water splitting configuration described in this embodiment, the operation method of injecting from above at the end of the operation, the difference in the injection time in the main washing process and the rinsing process, and the injection time of each cleaning nozzle in any process The settable operation method is not necessarily carried out integrally, and can be carried out independently. Even if it is not performed in all the cleaning steps, the effect can be obtained even if it is performed in any of the steps.

  In addition, in the present embodiment, the movement of the rotation diversion unit has been described mainly as a movement that repeats rotation and stop, but even when performing an operation of continuously moving in each step, by varying the rotation speed The operation similar to that of the present embodiment can be performed, and the same effect as that of the present invention can be obtained. Further, even when rotating at a constant speed, the effects of the first and second aspects of the invention can be obtained.

  In addition to the main body shape and the cleaning nozzle configuration used in the present invention, those shown in FIGS. 6, 7, 8, 9, and 10 can be considered. It can be obtained.

(Embodiment 2)
FIG. 12 is a partial sectional view of the dishwasher according to the second embodiment of the present invention. FIG. 13 is a partial cross-sectional view of the water separator.

  The difference from the first embodiment is that the dishwasher tableware basket has a two-stage configuration of an upper tableware basket 70 and a lower tableware basket 71 and a discharge port 102 provided in the rotating water diversion unit 77. Since the washing water is discharged to two washing nozzles, an upper table basket washing nozzle 72 and a lower table basket washing nozzle 73, the diversion outlet 74 is provided with two diversion outlets 75. It is said that it is. The basic configuration and operation related to the water distribution means are the same as those in the first embodiment, and the same reference numerals have the same structure and the description thereof is omitted.

  Next, the operation and action will be described. In the configuration in which the tableware basket has two upper and lower stages as in the present embodiment, and the cleaning nozzles 72 and 73 are respectively provided, the cleaning water is sequentially supplied to the upper and lower two cleaning nozzles by using the water diverter 35. In addition to the operation of spraying, the operation of operating the upper table basket washing nozzle 72 or the lower table basket washing nozzle 73 alone can be easily performed. For example, when a user cleans short dishes such as cups collectively, the tableware is set in the upper table basket 70, and an upper cleaning switch (not shown) provided in the operation unit (not shown) is set. )), You can choose a course to wash the dishes in the upper tableware basket. At this time, the discharge port 102 rotates until it opposes the water distribution discharge port 75 communicating with the upper cleaning nozzle 72. Then, the tableware in the upper tableware basket 70 is cleaned by spraying the cleaning water from the cleaning nozzle 72 for the upper tableware basket. At this time, since the amount of water supplied to the washing tub 22 is also less than that when washing both the upper and lower two-stage tableware baskets, the time for raising the washing temperature can be shortened, and the washing time can be shortened. it can.

  When a user wants to wash a large cooking utensil such as a bowl, a pan, a frying pan or the like used for cooking, the user sets it in the lower tableware basket 71 which can easily set a bulky object, and the operation unit (not shown). These pans can be washed by pressing a lower dish basket washing course switch (not shown) provided in The operation of the discharge port 102 is the reverse of the previous operation and rotates until it opposes the diversion water discharge port 75 communicating with the lower tableware basket cleaning nozzle 73. And the tableware of the lower tableware basket 71 is wash | cleaned by injecting wash water from the washing nozzle 72 for lower tableware baskets. Naturally, as in the case of dishwasher washing, it is possible to provide a dishwasher that reduces the amount of water used and shortens the washing time and power consumption.

  Thus, according to the present invention, the cleaning means can be selectively operated according to the type and amount of the tableware, so that the tableware can be cleaned intensively and more efficiently.

(Embodiment 3)
FIG. 14 is a partial perspective view showing the water diverter of the dishwasher according to the third embodiment of the present invention, and FIG. 15 is a perspective view showing spraying of the washing water of the dishwasher. FIG. 16 is a sectional view of the main part of the dishwasher.

  The difference from the first embodiment is that the dishwasher has a main body shape having a short depth with respect to the width as shown in FIGS. 14, 15, and 16, and two washing nozzles are provided at the lower part of the washing tank. In this case, the left table basket 99 or the right table basket 100 alone can be cleaned by providing the water dividing means. Therefore, the basic configuration and operation for realizing the water distribution means are the same as those in the first embodiment, and the same reference numerals have the same structure and the description thereof is omitted.

  In FIG. 14, in order to inject cleaning water only on the left side or the right side, the driving motor 86 is composed of a DC motor that can be reversed in the forward and reverse directions, and the right and left cleaning nozzles 90, 91, 92, 93. The four water discharge outlets communicating with the lower left washing nozzle are the water outlet 103 for the lower left washing nozzle, the water outlet for the upper left washing nozzle 82, the water outlet for the upper right washing nozzle 83, and the lower right washing nozzle. They are arranged so as to be the diversion outlets 84, respectively. When it is desired to wash only the left side, the control device 38 controls the rotary water diversion unit 40 to move between the water diversion outlets 103 and 82 while reversing forward and backward. On the other hand, when only the right side is desired to be cleaned, control is performed so as to move while reversing forward and reverse between the diversion outlets 83 and 84.

  In FIG. 15, 90 is a lower left cleaning nozzle, 91 is an upper left cleaning nozzle, 92 is an upper right cleaning nozzle, and 93 is a lower right cleaning nozzle. The operation unit 94 includes an operation switch 95 in which the left and right cleaning nozzles sequentially inject cleaning water, a left operation switch 96 in which the left and upper cleaning nozzles alternately inject cleaning water, and a right operation switch 104. There is. Reference numeral 98 denotes an operation course selection switch that is selected in accordance with the contamination of the tableware.

  In FIG. 16, the washing tub 22 is provided with two tableware baskets, a left tableware basket 99 and a right tableware basket 100, and can be pulled out individually. Moreover, since the tableware basket pin shape of the left and right tableware baskets 99 and 100 is the same shape, the same tableware can be set in the same amount of each tableware basket.

  First, the operation of the left and right individual cleaning will be described. It is well known that the amount of tableware set in the dishwasher and the set timing change depending on weekdays and holidays or morning and evening and noon in ordinary households. For example, if the housewife and the child have a different time to eat dinner than the husband, if you use a traditional dishwasher, set the tableware for the last meal you drank in the dishwasher and drive at once. The way to start was normal. However, this method has a problem that the housewife and the child's tableware first put in the dish basket take a long time to operate the dishwasher, it is difficult to remove the dirt, and the washing up becomes worse. In addition, when setting half of the tableware in one tableware basket, for example, if the dishes are configured in the shape of a tableware basket pin set on the left side of the tableware basket and the tableware set on the right side, half of the tableware is set. Despite the capacity of the dishes, there is a problem that these dishes cannot be washed unless all the washing nozzles are operated.

  However, according to the present invention, half of the dishes can be operated and washed with a smaller amount of water supply, so that the dishwashing of the dishes can be finished quickly without leaving the dirty dishes unnecessarily left.

  Moreover, regarding the operation method in which the operation of sequentially injecting from all the cleaning means is performed in the main cleaning step or the rinsing step, as described in the present embodiment and the second embodiment, some of the plurality of cleaning nozzles are used. If the cleaning operation is repeated using only the cleaning nozzle, a part of the leftovers and sewage accumulate around the unused cleaning tank, which causes odor and is unsanitary.

  However, according to the present invention, even when cleaning is performed by operating only a part of the cleaning means, the entire cleaning tank interior is cleaned using the entire cleaning means, so that the inside of the cleaning tank can always be kept clean. is there.

  It should be noted that the configuration and operation method related to the plurality of tableware baskets described in this embodiment, and the operation method of sequentially injecting wash water from all the wash nozzles at the end of the process are not necessarily carried out as a single unit, and are independent of each other. Implementation is possible.

Sectional drawing of the dishwasher of Example 1 of this invention Partial sectional view showing the structure of the water dividing means of the dishwasher and the flow of the washing water Exploded view showing the diversion configuration of the dishwasher Partial sectional view showing the switching part of the dishwasher The figure which shows the injection force of the water which each washing | cleaning means in which the water diversion means of the same dishwasher sprays makes one rotation The perspective view which shows the structure of the other washing | cleaning means of the dishwasher The perspective view which shows the structure of the other washing | cleaning means of the dishwasher The perspective view which shows the structure of the other washing | cleaning means of the dishwasher The perspective view which shows the structure of the other washing | cleaning means of the dishwasher The perspective view which shows the structure of the other washing | cleaning means of the dishwasher Sectional drawing of the dishwasher of Example 2 of this invention Partial sectional view showing the structure of the water dividing means of the dishwasher and the flow of the washing water Exploded view showing the diversion configuration of the dishwasher The partial perspective view which shows the water diverter of the dishwasher of Example 3 of this invention Perspective view showing spray of washing water of the dishwasher Cross section of the main part of the dishwasher Configuration of conventional dishwasher

Explanation of symbols

21 Body 22 Washing tank 23 Lid 25 Tableware basket 28 Washing pump 29, 30, 31, 32 Washing nozzle (cleaning means)
35 Water diversion device (water diversion means)
37 Discharge path 38 Control device (control means)
39, 87 Water conveyance part (water diversion means)
40, 84 Rotating water diversion part (switching part)
41, 83, 89, 102 Discharge port (switching part)
42, 86 Driving motor (switching section)
43, 74, 88 Water removal section (water distribution means)
44, 75 Divided water outlet (Diversion means)
45 Rotating shaft (switching part)
46 Oil seal (switching part)
47 Rotation angle detection sensor (supply control means)
48 Fixed position sensors (rotational position detection means, supply control means)
49 Drive motor support frame (switching part)
50 Rotation angle detection slit (supply control means)
51 Fixed position detection slit (rotation position detection means, supply control means)
52, 54, 56, 57, 61, 62, 63, 64, 65, 66 Rotating nozzle (cleaning means)
53 Bar-shaped nozzle (cleaning means)
55, 58, 59, 60 Fixed nozzle (cleaning means)
67 Rotation detection disk (rotation position detection means, supply control means)
72 Upper stage cleaning nozzle (cleaning means)
73 Lower stage cleaning nozzle (cleaning means)
80 Drive shaft (switching part)
101 switching part (water diversion means)

Claims (5)

A tableware basket for storing tableware, a washing tank for storing the tableware basket, a lid for closing the opening of the washing tank, a washing pump for pressurizing washing water, a plurality of washing means, and the washing pump, A water splitting means provided between each of the cleaning means and having a rotating water diverting unit that switches a discharge path to the cleaning means while being rotated by a driving motor; and a control means for controlling the water splitting means and the like. The water diversion means has a rotation position detection means for discharging washing water from a specific washing means, and the rotation position detection means has a fixed position sensor and a rotation detection disk, and the control The means is a dishwasher / dryer in which washing water is jetted from a specific washing means by the rotational position detecting means. The dishwasher according to claim 1, wherein the rotation position detection means includes a rotation angle detection sensor that detects a rotation angle of the rotation water diversion unit. The dishwasher according to claim 1 or 2, wherein the rotational position detecting means comprises an optical sensor. The dishwasher according to claim 1 or 2, wherein the rotational position detecting means comprises a limit switch. The dishwasher according to claim 1 or 2, wherein the rotational position detecting means comprises a magnetic sensor.

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