JP5909647B2 - dishwasher - Google Patents

Description

  The present invention relates to a dishwasher that performs sequential operations such as washing and rinsing of dishes by a control means.

  Conventionally, in this type of dishwasher, the control means controls the load of the washing pump, the heater, the fan, etc., and controls the steps of washing, rinsing and drying the dish to perform dishwashing. Also called. Furthermore, in order to improve the cleaning performance against oil stains and to promote drying after the rinsing process, there is also a process in which a heating and rinsing process for rinsing dishes with heated washing water is added at the end of the rinsing process ( For example, see Patent Document 1).

JP-A 63-279821

  However, in the dishwasher having the above-described conventional configuration, a series of operations up to washing, rinsing, and drying (blowing) of tableware is performed, so that the equipment is expensive. Therefore, as a cheaper dishwasher, a dishwasher without drying (air blowing) means is also prepared. Since this dishwasher does not have a drying (air blowing) means, the operation ends when the heating rinsing process ends, but when the user opens the dishwasher door to remove the dishes after the operation ends, the heating rinsing process There was a possibility of touching the inside of the washing tank and dishes that became hot.

  In addition, since this dishwasher has no drying (air blowing) means, after operation is complete, a large amount of water droplets (residual water) remain in the washing tub and the tableware, and when the user opens the dishwasher door, the dishwasher dries. Compared to a dishwasher with a (air blowing) means, the impression was inevitably bad, and as a result, the level of satisfaction with dishwashing decreased.

  In addition, a dishwasher having a drying (air blowing) means, that is, a so-called dishwasher, also has a “wash only course” operation that omits the drying process. Had.

  The present invention solves the above-mentioned conventional problems, and provides a cheaper dishwasher that does not have a drying (air blowing) means, and after the washing operation is finished, a little water droplets attached to the inside of the washing tank and the tableware. However, by reducing the control, when the user opens the door of the dishwasher, the inside of the washing tub and the dishes that have become hot in the heating rinsing process are not touched, and the remaining water in the washing tub and the dish is reduced. Thus, it aims at providing the dishwasher which improves the user's satisfaction with respect to dishwashing.

  In addition, in the operation of the “washing only course” of the dishwasher, when the user opens the dishwasher door by the control that reduces the water droplets attached to the inside of the washing tub and tableware as much as possible after the washing operation is completed. The dishwasher improves the user's satisfaction with dishwashing by not touching the inside of the washing tub and the dishes that have become hot during the heating rinsing process, and reducing the residual water in the washing tub and the dishes. The purpose is to provide.

In order to solve the above-described conventional problems, a dishwasher according to the present invention includes a washing tank for storing washing water and containing dishware, a water supply means for supplying washing water into the washing tank, and dishware using the washing water. Cleaning means for washing, heating means for heating the wash water, drain means for draining the wash water in the wash tank, temperature detection means for detecting the temperature of the wash water in the wash tank, and the temperature detection Control means for controlling the heating means based on the input of the signal of the means, and for controlling each step of washing, rinsing and heating rinsing using the water supply means, the washing means and the drainage means, and a user Display means for informing the operation status, and the control means does not perform the drying process using the heating means after the heating rinsing process, ends the operation after leaving for a predetermined time t1, Display means even during the neglect As well as informing the continuation of rotation, just before the standing for the predetermined time t1 ends, the drainage means is intended for a predetermined time t2 operation.

As a result, when the heating rinsing process is completed, the operation immediately ends, and sometimes the temperature becomes high in the heating rinsing process by leaving it for a predetermined time t1, unlike the conventional dishwasher that notifies the end. Allow the bath and tableware to cool naturally. In addition, the display means informs the user of the continuation of the operation during the predetermined time t1, and the user sees the dishwasher that has become quiet and mistakes it for the end of the operation, and opens the dishwasher door. Therefore, it is possible to avoid touching the inside of the cleaning tank or the tableware that has become hot. In addition, water drops on the inside of the washing tub and tableware dripping and dropping, gathering at the drain outlet as much as possible during the predetermined time t1, and proceeding with natural drying, so the remaining water when the user opens the door Therefore, the satisfaction of the user with respect to the dishwashing of the dishwasher can be improved. Further, since the washing water gathered at the drainage port while it is left is discharged by operating the drainage means for a predetermined time t2, the washing tank when the user opens the door after notifying the end of the operation thereafter. Residual water at the bottom can be reduced.

  The dishwasher of the present invention does not perform the drying process using the heating means after the heating rinsing process is completed, and ends the operation after leaving for a predetermined time t1, so that the temperature is increased in the heating rinsing process. The time to cool the inside of the washing tub and the tableware can be secured, and the display means notifies the user of the continuation of the operation while it is left. It is possible to avoid touching the dishes inside the cleaning tank that has become hot due to the mistake of closing and opening the door. In addition, water drops on the inside of the washing tub and tableware drop and collect during the predetermined time t1 and collect at the drainage outlet, and the natural drying progresses, so the residual water when the user opens the door is reduced. Therefore, the dishwasher which improves the satisfaction of the user with respect to dishwashing can be provided.

Side surface sectional drawing of the dishwasher in Embodiment 1 of this invention Control block diagram of the dishwasher (A) Schematic diagram showing the cleaning process of the display means of the dishwasher (b) Schematic diagram showing the heating rinse process of the display means of the dishwasher Control timing chart of the dishwasher Control timing chart of dishwasher in embodiment 2 of the present invention

A dishwasher according to a first aspect of the present invention is a cleaning tank for storing cleaning water and containing tableware, a water supply means for supplying cleaning water into the cleaning tank, a cleaning means for washing the dishes with the cleaning water, Heating means for heating the cleaning water, draining means for draining the cleaning water in the cleaning tank, temperature detecting means for detecting the temperature of the cleaning water in the cleaning tank, and input of signals from the temperature detecting means Control means for controlling the heating means, control means for controlling each step of washing, rinsing and heating rinsing using the water supply means, the washing means and the drainage means, and a display for informing the user of the driving situation And the control means does not perform the drying process using the heating means after the heating rinsing process, ends the operation after leaving for a predetermined time t1, and uses the display means during the leaving. Notify user of continued driving That together, just before standing for the predetermined time t1 ends, is the drainage means intended for a predetermined time t2 operation.

As a result, after the heating rinsing process is completed, it is possible to provide time for naturally cooling the inside of the washing tub and the tableware that has become hot, and the user touches the inside of the washing tub and the tableware that has become hot at the end timing of operation. This can be avoided by notifying the display means. In addition, the water remaining in the washing tank and on the tableware is dropped or left for a predetermined time t1 and collects at the drainage outlet, and natural drying progresses, reducing the residual water when the user opens the door. Therefore, the user's satisfaction with the dishwashing of the dishwasher can be improved. Further, since the washing water gathered at the drainage port while it is left is discharged by operating the drainage means for a predetermined time t2, the washing tank when the user opens the door after notifying the end of the operation thereafter. Residual water at the bottom can be reduced.

  In particular, in addition to the first invention, the second invention is provided with notifying means for notifying the end of driving by an alarm sound. Thereby, the user can know the end of the operation of the dishwasher even if he / she is away from the dishwasher by using information from the auditory sense.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
A dishwasher according to a first embodiment of the present invention will be described with reference to FIGS. 1 is a side sectional view of a dishwasher according to Embodiment 1 of the present invention. FIG. 2 is a control block diagram of the dishwasher. Fig.3 (a) is a schematic diagram which shows the display means of the dishwasher during the washing | cleaning process. FIG.3 (b) is a schematic diagram which shows the display means of the dishwasher during the heating rinse process. FIG. 4 is a control timing chart of the dishwasher. In addition, the liquid used for the washing | cleaning and rinse operation | movement of the to-be-washed | cleaned object of the tableware 3 is named generically, and it is called washing water.

  In FIG. 1, a dishwasher 20 is movably disposed in the washing tub 1 in the dishwasher 20, and the dishes 3 are stored in the dishwasher 2. The dish basket 2 can be taken out from the dishwasher by opening the door 17. When the water supply valve serving as the water supply means 4 is driven, the cleaning water is supplied to the cleaning tank 1 and stored. The cleaning means includes a cleaning nozzle 5 that ejects cleaning water, and a cleaning pump 7 that pressurizes the cleaning water and feeds the cleaning nozzle 5. The cleaning nozzle 5 is rotatably supported on the bottom surface in the cleaning tank 1 and injects cleaning water from the injection hole 5a toward the tableware 3 while rotating. The sprayed cleaning water enters the drain 6 on the bottom surface of the cleaning tank 1 after cleaning the dishes 3, is pressurized by the cleaning pump 7 and sent to the cleaning nozzle 5, and again from the injection hole 5a of the cleaning nozzle 5. Spray.

  The drainage means is constituted by a drainage pump 8 that discharges wash water out of the dishwasher 20. The cleaning pump 7 and the drainage pump 8 are arranged on the bottom outer wall of the cleaning tank 1. The water level detection means 9 detects whether or not the water level in the cleaning tank 1 has reached a predetermined water level, and is connected to the cleaning tank 1 by a communication pipe 9a. The switch 9c is turned on / off by the vertical movement of the float 9b. Configured to turn off and detect the water level. For example, when there is no water in the cleaning tank 1, the float 9b is lowered and the switch 9c is in an off state. When water is supplied into the cleaning tank 1, the float 9b is pushed up by the cleaning water through the communication pipe 9a, and the switch 9c is turned on when the upper end of the float 9b comes into contact with the switch 9c. The heating means 10 is a heater that is disposed at the bottom of the cleaning tank 1 and heats the cleaning water.

As the temperature detecting means 11, a thermistor for detecting the temperature of the cleaning water or air through the wall surface is provided on the outer wall of the bottom of the cleaning tank 1. The control means 12 responds to inputs from the water level detection means 9 and the temperature detection means 11 based on information from the operation means 13 for the user to operate (start, stop, set course, etc.) the operation of the dishwasher 20. The load of the water supply means 4, the cleaning pump 7, the drainage pump 8, the heating means 10 and the like is controlled. And the control means 12 and the power supply circuit 16 which produces | generates the power supply of load are provided in the dishwasher 20 main body inside. Further, the control means 12 is a notifying means 15 constituted by a display means 14 constituted by an LED or the like and a notification means 15 constituted by a buzzer or the like, and informs the user through the information of the display and sound. Inform.

  About the dishwasher comprised as mentioned above, the operation | movement and an effect | action are demonstrated below. The user opens the door 17 forward, pulls out the tableware basket 2, places the tableware 3 to be cleaned in the tableware basket 2, accommodates the tableware basket 2 in the cleaning tank 1, puts detergent, and opens the door 17. close up. Thereafter, the operation means 13 is operated to instruct the start of operation. From here, it demonstrates using the control timing diagram of FIG.

  The control means 12 starts driving based on information from the operation means 13 operated by the user. The operation is first performed from the cleaning process. The cleaning process includes a series of operations of a draining operation, a water supply operation, a cleaning operation, and a draining operation. First, the drainage pump 8 is operated as a draining operation, and the washing water remaining at the bottom of the washing tank 1 in the previous operation is discharged out of the dishwasher 20. The control means 12 ends the draining operation after a predetermined time t3 (for example, 5 seconds) when draining ends. At this time, for safety considerations, information on the absence of water from the water level detection means 9 (float 9b is lowered and switch 9c is turned off when the remaining water is drained) and the draining operation is terminated. good.

  And the control means 12 operates the water supply means 4 as water supply operation | movement, and supplies a wash water to the washing tank 1. FIG. When a predetermined amount of washing water is supplied, information indicating the presence of water (float 9b is raised and switch 9c is turned on when the water level rises) is obtained from the water level detection means 9, and the water supply operation is terminated. Thereafter, a cleaning operation is performed in which the cleaning pump 7 pressurizes the cleaning water and sprays the cleaning water from the injection holes 5a provided in the cleaning nozzle 5 together with the detergent. The control means 12 controls (on / off) energization of the heating means 10 provided in the cleaning tank 1 by this cleaning operation, and monitors the water temperature of the cleaning water with the information from the temperature detection means 11 while performing the cleaning operation. The washing water is heated to a predetermined temperature (for example, a water temperature of 55 ° C.), and the dishes 3 are washed with the heated washing water.

  When the washing operation for a predetermined time t4 (for example, 20 minutes) is finished, the control means 12 operates the drainage pump 8 to drain the washing water containing dirt washed off from the dishes 3 to the outside of the dishwasher 20. Is performed for a predetermined time t5. In addition, during the cleaning process, the control means 12 displays the LED indicating the cleaning process of the display means 14 by lighting or blinking, as shown in FIG.

  Subsequently, a rinsing step is performed. The rinsing process includes a series of operations including a water supply operation, a rinsing operation, and a draining operation. First, the control unit 12 operates the water supply unit 4 to supply new cleaning water until the water level detection unit 9 obtains information indicating that there is water (the switch 9c is turned on). When the predetermined amount of water supply is completed, the control means 12 operates the cleaning pump 7 again to inject cleaning water from the injection holes 5 a provided in the cleaning nozzle 5, so that detergent, leftovers, etc. are removed from the dishes 3. The rinsing operation for washing is performed for a predetermined time t6 (for example, 5 minutes). When the rinsing operation is completed, the control means 12 operates the drain pump 8 and performs the drain operation for a predetermined time t7. In addition, in order to make the tableware 3 more beautiful, a rinse process is repeated several cycles continuously.

Then, after the rinsing process is completed, a heating rinsing process using heated washing water is performed. In the heating and rinsing step, the control means 12 drives the heating means 10 after the water supply operation is completed, and monitors the temperature of the washing water with the information from the temperature detection means 11 while keeping the washing water at a predetermined temperature (for example, 70 ° C.).
And a heating rinse operation is performed for a predetermined time t8 (for example, 10 minutes). When this heating rinsing operation is completed, the control means 12 operates the drain pump 8 to perform a drain operation for discharging the wash water out of the dishwasher 20 for a predetermined time t9. When the heating and rinsing process is completed, the operation ends in the case of the operation in which the “washing only course” is selected in the conventional dishwasher having no drying (air blowing) means and the conventional dishwasher with a drying function.

  However, the control means 12 of the dishwasher according to the present embodiment does not end the operation even after the heating rinsing process ends (after the draining operation at the predetermined time t9), and for a predetermined time t1 (for example, 4 minutes). To leave. During this leaving, the control means 12 continues to display the LED indicating the heating rinsing process of the display means 14 as it is lit or blinking, as shown in FIG. Inform. After the leaving, the control means 12 stops the display means 14 and ends the operation.

  In this manner, the inside of the washing tub and the tableware that have become high temperature in the heating rinsing process are naturally cooled, and the time for the water droplets on the inside of the washing tub and the tableware to drip and collect at the drain outlet 6 is secured. And since it is alert | reported that it is still driving | running by the display means 14 during neglecting, the user does not misidentify that it is the end of driving | operating seeing the dishwasher which became quiet. Thereby, even if the user opens the door 16 of the dishwasher 20 immediately after the operation after being left, the user does not touch the inside of the hot washing tub or the tableware. Moreover, since the water droplets attached to the inside of the washing tub and the tableware are dropped or dropped by leaving for a predetermined time t1 after completion of the heating rinsing process and gather as much as possible at the drain outlet 6, the washing tub when the user opens the door Since the remaining water in the interior and the dishes can be reduced as compared with the conventional dishwasher, the satisfaction of the user with respect to the dishwashing of the dishwasher can be improved.

(Embodiment 2)
The dishwasher of Embodiment 2 of this invention is demonstrated referring FIGS. 1-3, FIG. The dishwasher of the second embodiment is the same component as that of the first embodiment, and only the control method after the heating rinsing process by the control means 12 is different. The operation and action will be described below.

  In FIG. 5, after the heating rinsing process is finished, the control means 12 performs the drainage control by operating the drainage pump 8 for the predetermined time t2 just before the standing for the predetermined time t1. For example, out of the standing time of 4 minutes (predetermined time t1), only the display means 14 is operated for the first 3 minutes and 55 seconds (the LED is blinked as shown in FIG. 3B), to the user. Inform you that you are still driving. Then, the drainage pump 8 is operated for the remaining 5 seconds (predetermined time t2). As a result, the remaining water that has fallen or dropped from the inside of the washing tub and from the dishes in the predetermined time t1 (4 minutes) left and collected in the drain 6 can be discharged out of the dishwasher 20.

  Then, after the leaving, the control means 12 notifies that the operation is finished by turning off all the LEDs on the display means 14. In addition to this, the control means 12 makes a sound with the notifying means 15 such as a speaker so as to notify the user at a distant place that the driving is finished, and finishes the driving. These controls can reduce the amount of water remaining in the washing tank and the dishes when the user opens the door after the operation is completed, thus improving the user's satisfaction with the dishwasher dishwashing. be able to.

  Note that the dishwasher described in the first and second embodiments has a door on the front surface of the washing tub, and the washing water is sprayed from the washing nozzle to wash the dishes. However, the present invention can be applied to an apparatus in which the opening of the cleaning tank is at the top and the cleaning tank is pulled out from the main body, or the cleaning tank is filled with cleaning water to clean dishes.

  As described above, in the dishwasher according to the present invention, even after the heating rinsing process is completed, a standing time of the predetermined time t1 is provided, and the display means informs that the operation is continued during the standing time. Time to cool the inside of the washing tub and tableware that has become hot can be secured, so that the user does not touch the inside of the washing tub or tableware at high temperature. It can reduce the amount of residual water, and when the user opens the door, it can improve the user's satisfaction with the dishwasher dishwashing, so apply to various household and commercial dishwashers Can do.

DESCRIPTION OF SYMBOLS 1 Washing tank 3 Tableware 4 Water supply means 5 Washing nozzle 7 Washing pump 8 Drain pump 10 Heating means 11 Temperature detection means 12 Control means 14 Display means 15 Notification means

Claims (2)

A cleaning tank for storing cleaning water and containing tableware; a water supply means for supplying cleaning water into the cleaning tank; a cleaning means for cleaning the dishes with the cleaning water; and a heating means for heating the cleaning water; While controlling the heating means based on the signal input of the temperature detection means, the drainage means for draining the cleaning water in the cleaning tank, the temperature detection means for detecting the temperature of the cleaning water in the cleaning tank, Control means comprising: control means for controlling each step of washing, rinsing, and heating rinsing using the water supply means, the washing means, and the drainage means; and a display means for informing the user of the operation status. Does not perform the drying process using the heating means after the heating rinsing process, ends the operation after leaving for a predetermined time t1, and informs the user of the continuation of the operation by the display means during the leaving. as well as, the predetermined time Just before the standing t1 is completed, dishwasher to the drainage means for a predetermined time t2 operation. The dishwasher of Claim 1 provided with the alerting | reporting means which alert | reports completion | finish of a driving | operation by alerting | reporting sound .