JP2012024117A - Dishwasher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dishwasher for performing an rinsing process under running water, and capable of saving water.SOLUTION: The dashwasher includes: a washing tub 1 for washing a washing object; a water supply device 11 for supplying water into the washing tub 1; circulation paths 7 and 8 for making washing water in the washing tub 1 circulate; a washing pump 5 provided in a circulation path; a running rinsing water supply device 21 for supplying water from the water supply device 11 into the washing tub 1 and rinsing the washing object; and a water storage tank 14 for storing the water after rinsing; and a controller 20 to thereby store the water after rinsing in the water storage tank 14 and reuse it as washing water for the next time.

Description

  The present invention relates to a dishwasher for washing dishes stored in a washing tank.

  In a domestic dishwasher, water is supplied from a water supply source to a washing tub containing dishware, water is collected at the bottom of the washing tub, and the water is sucked by a washing pump and pumped to the washing nozzle. The tableware is washed and rinsed by injecting water into the tableware from the water injection holes provided in the table. The water hitting the dishes and the inner wall of the washing tank returns to the bottom of the washing tank, and after removing leftovers etc. by the filter, it is sucked into the pump again and circulates in the washing tank. However, such a configuration in which a small amount of water is circulated to wash and rinse the dishes saves water compared to washing with running water. Some users are worried about the possibility of redeposition of soil and possible rinsing.

  In view of the above resistance to circulation rinsing, there is known a dishwasher to which a rinsing process is added, in which rinsing is performed with water that does not pass through a filter (does not circulate) at the end of the rinsing process. As shown in FIG. 6, the tableware 102 in the washing tank 101 is pressurized by a pump 103, and the water circulated through the filter 104 and the circulation path 105 is blown out from the nozzle 106 to be washed and rinsed. Execute the process. After that, tap water is supplied from the water supply port 107 of the nozzle 106, the tap water is jetted from the nozzle 106, the dishes 102 are washed, and then drained. The rinse water is not circulated at the last rinse. It is also acceptable for users who have a feeling of resistance to circulation rinsing (see, for example, Patent Document 1).

JP-A-5-192288

  The dishwasher having the above-mentioned rinsing process with running water is rinsed with running water, so that sufficient rinsing is performed. However, after rinsing, although the water collected without being drained at the bottom of the washing tank is used for the next washing, almost all of the water used for rinsing the running water will be washed away. There is a problem that the water saving at the time of dishwashing, which is the purpose of this, is sacrificed.

  The present invention solves the problems of the conventional dishwasher as described above, and is excellent in water saving while maintaining the goodness of the flowing water rinsing process of sufficiently rinsing dishes without circulating them. The purpose is to provide a dishwasher.

In order to solve the above-described conventional problems, the dishwasher of the present invention includes a washing tank for storing an object to be washed, a water supply means for supplying water into the washing tank, and a circulation for circulating the washing water in the washing tank. A path, a cleaning pump provided in the circulation path, a flowing water rinsing water supply means for rinsing an object to be cleaned by supplying water into the cleaning tank from the water supplying means, and a water storage means for storing the water after the flowing water rinsing, Provided is a dishwasher which is provided with a control means for controlling a washing pump, running water rinse water supply means and water storage means, and stores the water after running water rinse in the water storage means and uses it for the next washing water. is there.

  With this configuration, after completion of the circulation washing process and the circulation rinsing process, the tableware is rinsed directly from the tap water, and the water after the rinse with running water is stored in the water storage means, and the water is used for the next washing. As a result, the tableware can be sufficiently rinsed with running water, and the next washing water can be saved.

  As described above, the dishwasher of the present invention can provide a dishwasher that is excellent in terms of function and environment, in which the dishes are sufficiently rinsed with running water and water is saved by reusing the water. .

Schematic cross-sectional view of a dishwasher in an embodiment of the present invention The schematic diagram of the operation part of the dishwasher in embodiment of this invention Process drawing of dishwasher in embodiment of this invention Flowchart of running water rinsing process of dishwasher in an embodiment of the present invention Schematic diagram of a control system in an embodiment of the present invention Schematic diagram of a conventional dishwasher

  A first invention is provided in a cleaning tank for storing an object to be cleaned, a water supply means for supplying tap water in the cleaning tank, a circulation path for circulating the cleaning water in the cleaning tank, and the circulation path A washing pump, a rinsing water supply means for rinsing an object to be washed by supplying water into the washing tank from a water supply means, and a water storage means for storing the water after rinsing, and the washing pump and the rinsing water supply means for running water And the control means for controlling the water storage means, and the water after rinsing with running water is stored in the water storage means and used for the next washing water. Rinsing with running water ensures the cleanliness of the dishes. In addition, water after rinsing with running water can be reused for the next washing to save water.

  The second invention is provided with a water meter for measuring the amount of water provided in the water supply means and a means for setting the amount of water used for rinsing with running water. It can be set to eliminate wasteful use.

  The third invention is provided with display means for displaying the amount of water used for rinsing running water and the amount of water stored, particularly in the first or second invention, and informs the user of the amount of water used and the amount of water stored. In this way, the effect of water saving can be realized.

  In a fourth aspect of the invention, in particular, in any one of the first to third aspects of the invention, the water storage means has an on-off valve, and opens and closes after a predetermined amount of running rinse water is supplied by the output of the water meter. It is instructed by the control means to open the valve and start water storage. By discarding the initial water rinse, it is possible to store clean rinse water in the water storage means.

  The fifth aspect of the invention, in particular, in any one of the first to fourth aspects of the invention, is provided with a time measuring means for measuring the elapsed time from the time of water storage, and manages the quality of the water stored in the water storage means. can do.

  According to a sixth aspect of the invention, in particular, in any one of the first to fifth aspects of the invention, the water storage means includes a drain valve that opens when the time measuring means determines that the predetermined time has passed. The stored water that has not been used for cleaning can be drained.

  The seventh aspect of the present invention is the method according to any one of the first to sixth aspects, further comprising a water supply path for supplying water directly to the water storage means, supplying fresh water to the water storage means and washing the water storage means itself. It can be cleaned.

  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)
FIG. 1 is a schematic diagram of a dishwasher according to a first embodiment of the present invention. In FIG. 1, a washing tub 1 is formed inside a dishwasher main body, a dish basket 2 is stored in the washing tank 1, and tableware 3 is stored in the dish basket 2. In the lower part of the cleaning tank 1, a cleaning nozzle 4 constituting a cleaning means is installed in communication with the cleaning pump 5 through a circulation path 8. At the bottom of the washing tank 1, a leftover filter 6 for filtering leftovers is installed, and a circulation path 7, a washing pump 5, a circulation path 8, a washing nozzle 4, and a washing tank 1 are formed. Further, the water supply means 11 has a water supply connection port 11a for tap water, a water meter 10 for measuring tap water is installed, and communicates with the cleaning pump 5 via the first water supply path 11b.

  The discharge port of the cleaning pump 5 communicates with the cleaning nozzle 4 through a circulation path 8 that extends in the lateral direction. The circulation port 12 provided at the bottom of the cleaning tank 1 is connected to the suction port of the cleaning pump 5 through the leftover filter 6 and the circulation path 7. On the other hand, although not shown, the drainage means 9 is connected to the drainage port 9a via the cleaning pump 5 and communicates with the outside of the machine. When the cleaning pump 5 is driven to rotate in the direction opposite to the direction in which the cleaning water is circulated to the cleaning nozzle 4, the cleaning pump 5 is drained out of the apparatus through the drainage means 9.

  The water storage tank 14 has a predetermined capacity and can store water, and the flow path 14a is partitioned between the water storage tank 14 and the washing tank 1 by a tank valve 16 for water sealing. Yes. Further, the water supply means 11 and the water storage tank 14 communicate with each other through a water supply path 11c, and a tank cleaning valve 17 for opening and closing is also installed. The water absorption pump 15 is a pump for sucking up and storing the water in the cleaning tank 1 in the water storage tank 14. After rinsing with running water, the water stored in the water storage tank 14 is returned to the inside of the washing tank 1 in the next washing step and reused as washing water. Thereby, the water supply of tap water can be reduced in the next washing | cleaning process, and water saving can be aimed at.

  Moreover, the opening / closing part 18 of the dishwasher main body has a configuration in which the washing tub 1 into which the dishes 3 to be washed appear is opened by opening forward. A heater 19 is disposed at the bottom of the cleaning tank 1 as heating means for cleaning water. Control means 20 for controlling the dishwashing process is installed in the space outside the washing tub 1 below the opening / closing part 18.

  In the above configuration, tap water is measured by the water meter 10 and supplied from the water supply means 11 to the cleaning tank 1. In both the washing process and the circulation rinsing process, a certain amount of water necessary for circulation is accumulated at the bottom of the washing tank 1 from the water supply means 11. The accumulated water is circulated to perform a predetermined process. On the other hand, in the running water rinsing step, tap water is directly supplied to the circulation path 8 and guided to the cleaning nozzle 4 ahead of the tap water. After the dishes 3 are rinsed, a certain amount is accumulated in the lower part of the cleaning tank 1.

  Specifically, in the washing step and the circulation rinsing step, when the washing pump 5 rotates forward with water stored in the bottom of the washing tank 1, the water sucked through the circulation port 12 is washed through the circulation path 7. 4 is pumped. And water spouts from the water injection hole provided in the upper surface of the washing nozzle 4, and the washing nozzle 4 rotates to a predetermined direction centering | focusing on a perpendicular | vertical axis | shaft with the water force.

  On the other hand, in the running water rinsing step, the water is supplied from the water supply means 11 to the washing nozzle 4, and these constitute the running water rinse water supply means 21. And water spouts from the water injection hole provided in the upper surface of the washing nozzle 4, and the washing nozzle 4 rotates to a predetermined direction centering | focusing on a perpendicular | vertical axis | shaft with the water force. The water after rinsing with running water is discharged from the discharge port of the drainage means 9 according to an instruction of the control means 20 that detects the predetermined supply water quantity from the signal of the water meter 10, and then into the water storage tank 14 that is a water storage means. It is sucked up by the water absorption pump 15 and stored.

  This stored water after rinsing is used for the next cleaning, which eliminates the need for the first tap water supply in the next cleaning process or requires a small amount of water, thus saving water. Can do.

  FIG. 2 is a front view of the opening / closing part 18 of the dishwasher according to the embodiment of the present invention. On the surface of the opening / closing unit 18, a power / start button 22 for instructing on / off of the power source and the start of the process, a time display unit 23 for displaying the passage of time, a washing button 24 for setting a cleaning / circulation rinsing / running water rinsing process, A drying button 25 for setting a drying process, a reservation button 26 for setting a reservation, a rinse amount knob 27 and a rinse amount display unit 28 for setting a running water rinse amount, a water storage amount display unit 29 for displaying a stored water amount after running water rinse, and water storage A tank drain / clean button 30 is provided for instructing drainage and cleaning of the tank 14.

  When rinsing with running water, the rinsing amount knob 27 is turned to set the amount of water used for rinsing with running water. Further, the water storage amount display unit 29 displays the amount of water in the water storage tank 14, and the rinsed water that has been stored is preferentially used for the next cleaning. The tank drain / wash button 30 is pressed once to discharge the water from the water storage tank 14, and when pressed twice, tap water is poured into the tank to perform tank cleaning.

  FIG. 3 is a process diagram of the dishwasher according to the embodiment of the present invention. In the standard dishwasher process, a “circulation washing process” in which dishes are washed with circulating water is first executed. In this process, when there is water stored in the water storage tank 14, the water is supplied into the washing tank 1, and when there is not enough water stored, or when there is no water storage, tap water is supplied from the water supply means 11, and circulation cleaning is executed. The The water sprayed to the dishes 3 from the cleaning nozzle 4 and the water that has been cleaned are filtered by the residual vegetable filter 6 at the bottom of the cleaning tank 1, and pass through the circulation path 7, the cleaning pump 5, and the circulation path 8. It is again sprayed from the washing nozzle 4 to the dishes 3. When the cleaning is completed, the draining means 9 drains the water in the cleaning tank 1.

  Subsequently, a “circulation rinsing process” is performed in the same manner with circulating water. In the circulation rinsing step, the rinsing water is circulated through the same circulation path as the above-described circulation cleaning. However, unlike the “circulation washing process”, in this “circulation rinsing process”, the water for circulation rinsing is supplied with tap water from the water supply means 11, the water jetted from the washing nozzle 4 to the dishes 3, and the circulation rinse. The finished water is filtered from the leftovers by the leftover filter 6 at the bottom of the washing tank 1, and again sprayed from the washing nozzle 4 to the dishes 3 through the circulation path 7, the washing pump 5 and the circulation path 8. When the circulation cleaning is completed, the draining means 9 drains the water in the cleaning tank 1. The “circulation rinsing process” is performed a plurality of times while rinsing water is discarded and it is confirmed that the water has been cleaned. In FIG. 3, it is executed twice.

  Further, after the “circulation rinsing step”, although not shown in FIG. 3, a “superheated rinsing step” performed while heating the circulating water with the heater 19 may continue. After the “circulation rinsing process” is completed, the “running water rinsing process” is performed by running water. In the “flowing water rinsing process”, two processes of “rinsing dishes with running water” and “storage after running water rinsing” proceed simultaneously. The running water rinsing process will be described with reference to FIG.

  After the “flowing water rinsing process”, a “drying process” for drying the dishes 3 by the heater 19 is executed, and the entire process is completed.

  FIG. 4 is a flowchart of a running water rinsing process of the dishwasher in the embodiment of the present invention. Details of the “flowing water rinsing step” shown in FIG. 3 will be described. However, the description will be made assuming that the amount of running water has already been set. The control means 20 performs the following control when entering the running water rinsing process.

  Water is supplied from the water supply means 11 (step 32), and rinsing with running water starts. It is determined whether or not a certain amount of water has been injected in order to discard the water that may contain re-deposits in the initial stage of rinsing (step 33). If completed, the water pump 15 is moved to the water storage tank 14 to store the rinsed water (step 34). It is determined whether or not a set amount of water has been supplied (step 35). If it has been reached, the rinsing water injection is stopped (step 36). Further, the water storage in the water storage tank 14 is also stopped (step 37), and the “running water rinsing process” is completed.

  The water stored in the water storage tank 14 is used without waste in the next cleaning process. The amount of water used for running water rinsing has been described as being measured by the water meter 10 when water is supplied from the water supply means 11, and the process of rinsing and storing water is carried out based on the measurement. If a water meter dedicated to water storage that measures the amount of water stored during storage is installed, the amount of water stored can be reported more accurately.

  FIG. 5 is a schematic diagram of a control system of the dishwasher according to the embodiment of the present invention. The control means 20 stores the rinse water measured by the water meter 10 in the water storage tank 14 according to the input of the rinse amount knob 27, and responds to the power / start button 22, the wash button 24, the dry button 25, and the reservation button 26. In order to execute the process, the cleaning pump 5, the water absorption pump 15, the heater 19 and the like are driven. Further, when it is detected from the signal from the time measuring means 31 that the water storage time in the water storage tank 14 exceeds a certain time, the water stored in the tank valve 16 is opened and the stored water is drained. In this way, the water stored in a certain time is drained to prevent the cleaning water from deteriorating.

  The period of time until this drainage can be further enhanced even if it varies depending on the season and temperature, such as summer and autumn, 20 ° C or higher and 20 ° C or lower. In response to an instruction from the tank drain / wash button 30, the control means 20 opens the tank washing valve 17 and supplies tap water to the inside of the water storage tank 14 to keep the inside of the tank clean.

  In addition, the time display unit 23 displays the elapsed time and the reservation time of each process, the rinse amount display unit 28 displays the amount of water used for rinsing running water, and the stored water amount display unit 29 displays the amount of water after rinsing that is reused. The data on the amount of water used, which is the biggest concern of running water rinsing, is displayed.

  As described above, according to the present invention, it is possible to feel that the water has been sufficiently rinsed by running water, and the use of the water after the running water is used for the next washing, thereby reducing the use of tap water for the next washing. Can do. Thus, it is possible to realize a dishwasher having both water-saving and high rinsing quality.

  Thus, according to this structure, it can be used for an industrial dishwashing system or the like.

DESCRIPTION OF SYMBOLS 1 Washing tank 2 Tableware basket 3 Tableware 4 Washing nozzle 5 Washing pump 6 Leftover filter 7, 8 Circulation route 9 Drainage means 9a Drainage port 10 Metered water device 11 Water supply means 11a Water supply connection port 11b, 11c Water supply route 12 Circulation port 14 Water storage tank 14a Flow path 15 Water absorption pump 16 Tank valve 17 Tank cleaning valve 18 Opening / closing part 19 Heater 20 Control means 21 Flowing water rinsing water supply means 22 Power / start button 23 Time display part 24 Wash button 25 Dry button 26 Reservation button 27 Rinse amount Knob 28 Rinsing amount display part 29 Reservoir amount display part 30 Tank drain / wash button 31 Timekeeping means

Claims (7)

A cleaning tank for storing an object to be cleaned, a water supply means for supplying tap water into the cleaning tank, a circulation path for circulating the cleaning water in the cleaning tank, and a cleaning provided in the circulation path Rinsing water supply means for rinsing the object to be cleaned by supplying water into the washing tank from the water supply means, water storage means for storing the water after running water rinse, the washing pump, the flowing water rinsing water supply means, A dishwasher comprising control means for controlling the water storage means, wherein the water after rinsing with running water is stored in the water storage means and used for the next wash water. The dishwasher according to claim 1, further comprising a water meter provided in the water supply means for measuring the amount of water supplied, and a means for setting the amount of water used for rinsing with running water. The dishwasher according to claim 1 or 2, further comprising display means for displaying the amount of water used for rinsing running water and the amount of stored water. The water storage means has an open / close valve, and is instructed by the control means to open the open / close valve and start water storage after a predetermined amount of running rinse water is supplied by the output of the water meter. The dishwasher of any one of Claims. The dishwasher of any one of Claims 1-4 provided with the time measuring means which measures the elapsed time from the time of water storage. The dishwasher according to any one of claims 1 to 5, wherein the water storage means includes a drain valve that opens when the time measuring means determines that the predetermined time has passed. The dishwasher of any one of Claims 1-6 provided with the water supply path | route which supplies water directly to a water storage means.