JP2009082394A - Dishwasher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dishwasher capable of automatically supplying a detergent surely by a simple configuration. <P>SOLUTION: The dishwasher WM includes a washing nozzle 11a for jetting washing water to a washed object such as a dish arranged in a washing tub 40, a detergent supply container 41 for supplying the detergent to the washing tub 40, a first flow path 11 connected to the washing nozzle 11a, a washing pump 23 for supplying the washing water to the first flow path 11 and jetting it from the washing nozzle 11a, and a control means for controlling the washing pump 23. The control means executes control so as to reversely rotate the washing pump 23 at prescribed detergent supply timing, and the washing water is supplied to the detergent supply container 41 by reversely rotating the washing pump 23. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a dishwasher.

  In the dishwasher, preliminary cleaning is performed before the main cleaning using the detergent. In order to perform the main cleaning effectively, pre-cleaning should be performed by spraying water regularly to keep the food residue swollen so that the food residue attached to the tableware will not dry out and become difficult to peel off. This is what we are aiming for.

  By the way, this pre-cleaning is a very effective means in a dishwasher that cleans only by spraying cleaning water because the food residue does not dry and maintains a swollen state as described above. However, when performing this pre-cleaning, if the cleaning water is sprayed in the pre-cleaning stage, the cleaning water will also dissolve the detergent stored in the detergent charging container. When it is discharged, when the hot water is newly supplied in the main cleaning and the cleaning is started, there is a problem that the detergent is lost. Therefore, when the tableware is stored for the first time and pre-cleaning is started, the detergent cannot be put into the detergent container as well as storing the tableware. There is annoyance that it is necessary to start the main cleaning by putting the detergent together with the storage. In particular, it is often the case that fathers who store dishes at the end are often late fathers, so this annoying problem has become prominent. Thus, a desire to be able to start pre-cleaning has been strongly desired.

In response to this demand, a lid is provided in the detergent charging container so that the detergent is not melted out by spraying the washing water at the time of preliminary washing. A detergent that dissolves is known. However, such a configuration not only causes an increase in size and cost of the apparatus, but also causes a problem that the detergent adheres to the lid and causes malfunction. In addition to this, as a product that can realize the above problem at low cost without using a solenoid or a lid, tableware that realizes this by changing the discharge pressure of the pump as described in Patent Document 1 below. A washing machine has also been proposed.
JP-A-9-131296

  The tableware washing machine described in the above-mentioned patent document 1 is changing the range which the washing water sprayed from a nozzle reaches by changing the discharge pressure of a pump. Specifically, the cleaning water spray strength from the same nozzle is reduced by lowering the pump discharge pressure during preliminary cleaning to prevent the cleaning water from reaching the detergent charging container. In this case, the cleaning water reaches the detergent charging container by increasing the discharge pressure of the pump.

  However, in this prior art, since the discharge pressure of the pump is lowered at the time of preliminary washing, there is a high possibility that the washing water does not reach the particularly high tableware arranged in the dishwasher. As a result, there was a big problem that the food residue adhering to the tableware at a high position could not be obtained, resulting in poor cleaning.

  An object of this invention is to provide the dishwasher which can perform automatic injection | throwing-in of a detergent reliably with a simple structure.

  In order to solve the above-described problems, a dishwasher according to the present invention includes a cleaning nozzle that injects cleaning water onto an object to be cleaned such as tableware disposed in a cleaning tank, and a detergent that is supplied to the cleaning tank. A detergent charging container configured to prevent cleaning water sprayed by the cleaning nozzle from entering the interior; a detergent charging nozzle provided at a position where cleaning water can be supplied to the detergent charging container; and the detergent Control means for controlling the supply of washing water from the charging nozzle, and the control means supplies the cleaning water to the detergent charging nozzle at a predetermined detergent charging timing, Control is performed so that the detergent contained in the detergent charging container is dissolved in the washing water.

  According to the present invention, a detergent charging container configured to prevent the cleaning water sprayed by the cleaning nozzle from entering the cleaning nozzle is provided, and the detergent contained in the detergent charging container is washed water at a predetermined detergent charging timing. If the predetermined detergent charging timing is set after the preliminary cleaning, the detergent can also be input when the tableware is placed inside the cleaning tank, and the added detergent is dissolved during the preliminary cleaning. I do not put out. Therefore, since the detergent is not dissolved in the cleaning water used at the time of preliminary cleaning, the cleaning water used at the time of preliminary cleaning can be drained. In addition, clean cleaning water can be used during the main cleaning with detergent, and by simply controlling the spraying of cleaning water from the detergent charging nozzle, Detergent can be reliably introduced. Furthermore, by providing a dedicated detergent injection nozzle for supplying detergent, it is possible to direct the detergent input container to the target position, so that the detergent contained in the detergent input container is reliably injected into the washing water. be able to.

  In the dishwasher according to claim 2, the detergent charging container is disposed at an upper portion of the cleaning tank, the detergent charging nozzle is disposed close to the detergent charging container, and cleaning water is supplied to the detergent charging nozzle. A cleaning pump for supplying cleaning water to the channel, and a shutoff valve for opening and closing a cleaning water supply port from the cleaning pump to the channel.

  According to this aspect, the detergent charging container is placed in the upper part of the cleaning tank, and the detergent charging nozzle is placed in close proximity to the detergent charging container so arranged, so that the cleaning is reliably performed with a simple configuration. It is possible to eliminate the intrusion of the cleaning water sprayed from the nozzle and supply only the cleaning water sprayed from the detergent charging nozzle to the detergent charging container and load the detergent. In addition, since the detergent charging container and the detergent charging nozzle are arranged close to each other, the cleaning water sprayed from the detergent charging nozzle can be reliably supplied to the detergent charging container, and no extra cleaning water is required. Since there is no need to unnecessarily increase the spray pressure of the cleaning water sprayed from the charging nozzle, it is possible to prevent the detergent from splashing more than necessary due to the spraying of the cleaning water, and the lack of the detergent dissolved in the cleaning water.

  The dishwasher according to claim 3 of the present application includes an expandable / contractible nozzle that functions as the cleaning nozzle, and the nozzle extends at the detergent charging timing to be close to the detergent charging container and functions as the detergent charging nozzle. To do.

  According to this aspect, in a state where the extendable nozzle is not extended, unnecessary cleaning water is not supplied to the detergent charging container by causing the nozzle to function as a cleaning nozzle. On the other hand, by extending the extendable nozzle at the detergent charging timing to make the detergent charging nozzle, it is possible to reliably supply the cleaning water to the detergent charging container by bringing the nozzle close to the detergent charging container. It is possible to reliably introduce detergent. In addition, since the extendable nozzle is extended close to the detergent container, the cleaning water sprayed from the nozzle is reliably supplied to the detergent container as if the detergent container and the detergent nozzle were placed close to each other. Detergent that does not require extra wash water and does not need to increase the spray pressure of the wash water sprayed from the nozzle unnecessarily. Can be suppressed.

  The dishwasher according to claim 4 of the present application includes a flow path for supplying cleaning water to the nozzle and a cleaning pump for supplying cleaning water to the flow path, and increases the discharge pressure of the cleaning pump. This extends the nozzle.

  According to this aspect, since the extendable nozzle is extended by increasing the discharge pressure of the cleaning pump, the effect described in claim 3 can be obtained with a simple configuration of pressure change of the cleaning pump.

  In the dishwasher according to the fifth aspect of the present invention, when performing preliminary cleaning for cleaning the object to be cleaned without putting a detergent into the cleaning tank, the discharge pressure of the cleaning pump is reduced and the nozzle is contracted. It is maintained in a state.

  According to this aspect, when performing pre-cleaning, the discharge pressure of the cleaning pump is lowered so that the nozzle can be lowered, and the cleaning water can be sprayed to the dishes with a simple configuration. The washing water can be configured not to flow into the detergent charging container. Conventionally, although it has been considered to change the discharge pressure of the cleaning pump, since the cleaning water injection position of the nozzle does not change, there is a high possibility that the cleaning water is not injected particularly into the upper tableware in a low pressure state. On the other hand, according to the present invention, the washing water injection position of the nozzle is changed in addition to the change in the injection pressure, so that the supply of the washing water into the detergent charging container is reliably prevented during the preliminary washing, and the upper tableware The washing water can be reliably jetted to the like.

  In the dishwasher according to the sixth aspect of the present invention, the detergent charging nozzle is directed toward the detergent charging container and is disposed downward from the top surface of the cleaning tank, and the cleaning water is supplied to the detergent charging nozzle. The cleaning pump is configured to increase the discharge pressure of the cleaning pump so that the cleaning water sprayed from the detergent charging nozzle reaches the detergent charging container, and the discharge pressure of the cleaning pump is When the temperature is low, the cleaning water sprayed from the detergent charging nozzle does not reach the detergent charging container.

  According to this aspect, since the detergent charging nozzle is arranged on the top surface side and the cleaning water is sprayed from the top surface side, unlike the conventional technology, the simple configuration of changing the discharge pressure of the cleaning pump Thus, the cleaning water can be reliably sprayed on the tableware and the like, and the supply of the cleaning water to the detergent charging container and the start of the supply of the cleaning water to the detergent charging container can be reliably performed at the intended timing.

  ADVANTAGE OF THE INVENTION According to this invention, it is a dishwasher which can perform detergent automatic injection | throwing-in with a simple structure, Comprising: The dishwasher which can be reliably thrown in at the timing which wants to throw in a detergent can be provided.

  Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. In order to facilitate the understanding of the description, the same constituent elements in the drawings will be denoted by the same reference numerals as much as possible, and redundant description will be omitted.

  A dishwasher according to this embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a diagram illustrating a configuration of the dishwasher WM. FIG. 2 is a diagram for explaining the transmission and reception of signals from the CPU 29 incorporated in the dishwasher WM. The dishwasher WM is housed in the main body 10 so that the washing tank 40 can be pulled out. A basket 42 is arranged in the washing tank 40, and a dish, a pan, or the like is placed on the basket 42, and washing water is sprayed onto the dish or the like for cleaning.

  The main body 10 includes a first flow path 11, a cleaning nozzle 11a, a water supply port 12, a water supply valve 13, a water level sensor 14, a water level sensor 15, a water level sensor 16, a float 17, a second flow path 18, a detergent charging nozzle 18a, a temperature. Sensor 19, hot air heater 20, fan 21, intake port 22, cleaning pump 23, drain pump 24, drain valve 25, water temperature sensor 26, hot water heater 27, leftover filter 28, CPU 29 (control means), operation panel 30, A rotary cleaning nozzle 31 and a detergent charging container 41 are provided.

  As shown in FIG. 2, signals output from the water level sensor 14, the water level sensor 15, the water level sensor 16, the temperature sensor 19, and the water temperature sensor 26 are input to the CPU 29 via the interface. Control signals output from the CPU 29 are connected to the fan 21, the motor 231 for driving the cleaning pump 23, the motor 241 for driving the drainage pump 24, the hot air heater 20, the hot water heater 27, and the alarm 32 via the interface. Are output to the water supply valve 13 and the drain valve 25, and each operates according to the output control signal.

  The water supply valve 13 opens and closes according to a control signal output from the CPU 29. When the water supply valve 13 is opened, cleaning water is supplied from the water supply port 12 into the cleaning tank 40. A float 17 is arranged to detect the level of the cleaning water stored in the cleaning tank 40. The float 17 is configured to float on the wash water, and is configured to detect the water level of the wash water in contact with the water level sensor 16, the water level sensor 15, and the water level sensor 14.

  The water level sensor 16 is a sensor for detecting whether or not the cleaning water is at a low water level, and is mainly used for determining whether or not drainage is being performed accurately during drainage. The water level sensor 15 is a sensor for detecting whether or not the cleaning water is at a high water level, and is mainly used to determine whether water is being supplied accurately at the time of water supply. The water level sensor 14 is a sensor for detecting whether or not the cleaning water in the cleaning tank 40 has an abnormally high water level. For example, the water supply valve 13 is in an open and fixed state during water supply, and the cleaning water is excessive. It is used to detect that the liquid is supplied to the water or to detect that bubbles are generated excessively due to the introduction of an incorrect detergent. For this reason, each sensor is arranged in order of the water level sensor 16, the water level sensor 15, and the water level sensor 14 from the bottom.

  A hot water heater 27 is provided below the cleaning tank 40, and the cleaning water heated by the hot water heater 27 is supplied to the cleaning pump 23. The cleaning pump 23 supplies cleaning water to the first flow path 11 during forward rotation and pumps it toward the cleaning nozzle 11. The cleaning pump 23 also pumps cleaning water to the rotary cleaning nozzle 31 during forward rotation. The cleaning pump 23 supplies cleaning water to the second flow path 18 during reverse rotation, and pumps it toward the detergent charging nozzle 18a.

  The cleaning nozzle 11 is disposed above the cleaning tank 40 and injects cleaning water from above to the tableware and the like. The rotary cleaning nozzle 31 is disposed below the car 42, and the cleaning water is sprayed to the tableware and the like from below at a wide angle as the spray port rotates. The detergent charging nozzle 18 a is disposed above the cleaning tank 40 and injects cleaning water into the detergent charging container 41. When cleaning water is sprayed into the detergent charging container 41, the detergent stored in the detergent charging container 41 scatters or overflows together with the cleaning water and is supplied into the cleaning tank 40.

  In order to measure the temperature of the cleaning water heated by the hot water heater 27, a water temperature sensor 26 is disposed in the vicinity of the hot water heater 27. A leftover filter 28 is provided above the hot water heater 27 so that leftovers that fall when washing dishes and the like do not flow into the washing pump 23 side. A drain pump 24 and a drain valve 25 are disposed at the same position as the cleaning pump 23.

  A fan 21 and a warm air heater 20 are arranged to inject warm air into the cleaning tank 40. When the fan 21 rotates, air is sucked from the intake port 22 and sent to the warm air heater 20 side. After being heated by the warm air heater 20, it is injected into the cleaning tank 40 and discharged from the exhaust port 41. The temperature sensor 19 is disposed closer to the cleaning tank 40 than the warm air heater 20 in order to measure the temperature of the warm air.

  The alarm device 32 is a device for issuing an alarm to the user when an abnormality occurs in the dishwasher WM as a result of the abnormality determination.

  The operation panel 30 is a part that receives a user instruction input to the dishwasher WM. An example of the operation panel 30 is shown in FIG. The operation panel 30 shown in FIG. 3 includes a power button 301, a start button 302, a course selection button 303, a drying selection button 304, a ventilation selection button 305, and a reservation button 306. An output signal as a result of operating each button is output to the CPU 29, and the control operation is appropriately performed by the CPU 29.

  The power button 301 is a button for turning on and off the main power of the dishwasher WM. The start button 302 is a button for instructing the start of dishwashing or instructing a pause. The course button 303 is a button for instructing a dish washing course. The drying button 304 is a button for instructing a drying course after washing dishes. The reservation button 306 is a button for reserving a dish washing time.

  Subsequently, the cleaning operation of the dishwasher WM will be described with reference to FIG. FIG. 4 is a time chart for explaining the cleaning operation of the dishwasher WM. As shown in FIG. 4, the washing operation of the dishwasher WM sequentially performs the water supply step S41, and then prevents the food adhering to the tableware from drying and sticking and swells the food in the next main washing step S46. After the pre-washing step S42 for facilitating the removal of dirt is performed for a predetermined time, the washing water is drained in the draining step S43, hot water is fed in the water feeding step S44, and the detergent is fed in the detergent feeding step S45. Then, full-scale cleaning is started in the main cleaning step S46. After the completion of the main cleaning step S46, the process proceeds to the rinsing step performed following the main cleaning step S46 via the drainage step S47 and the water supply step S48. This rinsing step includes three rinsing steps. Specifically, rinsing steps 1 and 2 that are operated for a short period of time are performed for the purpose of draining the cleaning water containing the detergent and replacing it with clean cleaning water. A heat rinsing process for performing rinsing is performed. Thereafter, the drainage process S56 is executed, and then the process proceeds to the drying process S57 to complete a series of control sequences.

  This control sequence will be specifically described below. In the water supply step S41, the water supply valve 13 is opened and water is supplied to the cleaning tank 40. The water level in the water supply step S41 is set to a lower position until the water level sensor 16 detects it. In the pre-washing step S42, the washing pump S43 is driven to remove large leftovers attached to the tableware and swell the food adhering to the tableware. Thereafter, water is drained in the draining step S43, and hot water of 60 degrees is fed in the water feeding step S44. The water level in the water supply step S44 is set to a higher position detected by the water level sensor 15. After the water supply is completed, the detergent stored in advance in the washing tank 40 is charged in the detergent charging step S45. More specifically, the cleaning pump 23 is reversely rotated at a low speed, and cleaning water is jetted from the detergent charging nozzle 18 a through the second flow path 18. Since the detergent charging nozzle 18a is directed to the detergent charging container 41, the cleaning water sprayed from the detergent charging nozzle 18a causes the detergent contained in the detergent charging container 41 to be greatly scattered because the pump is slowed down. The detergent is poured into the washing tank 40 by overflowing while suppressing. In the main cleaning process S46 from the detergent charging process S45, the hot water heater 27 is energized, and the cleaning pump 23 is driven at a high speed in a normal rotation to perform cleaning as a normal control.

  After the main cleaning step S46 is continued for about 20 minutes, the cleaning water mixed with the detergent is drained in the draining step S47, and the clean room temperature cleaning water is supplied again in the water supplying step S48. In order to save water in the water supply step S48, the water level is set to a lower position detected by the water level sensor 16. When the main cleaning step S46 is completed, the process proceeds to a rinsing step. The rinsing step is continuously executed three times in a form of repeating drainage water. In the first rinsing step 1S49, the washing pump 23 is driven to wash away the detergent. Thereafter, the washing water is drained in the draining step S50 and supplied in the water feeding step S51. Similarly, the water level in the water supply step S51 is set to a lower position. The washing pump 23 is driven in the rinsing step 2S52 to wash away the detergent, and the washing water is drained in the draining step S53. The washing water can be made clean with no detergent by these two times of drainage water. Thereafter, hot water of 60 degrees is supplied in the water supply step S54. The water level in the water supply step S54 is set to a higher position detected by the water level sensor 15.

  After the water supply is completed, the hot water heater 27 is energized and the temperature of the washing water is further increased to 80 degrees. In this state, the washing pump 23 is driven, and full-scale rinsing with hot water is executed. This is the heat rinsing step S55. This heating and rinsing process is continued for about 20 minutes, and the cleaning of the dishes is substantially completed. Then, it drains at drainage process S56, and shifts to drying process S57 for drying tableware. Here, the fan 21 is rotated and the hot air heater 20 is energized, whereby hot air is injected into the cleaning tank 40 and the dishes are dried. In the initial stage of the drying step S57, the warm air heater 20 is not energized because the remaining heat in the cleaning tank 40 is used.

  Subsequently, the rotation state of the cleaning pump 23 and the spraying state of the cleaning water from the cleaning nozzle 11a and the detergent charging nozzle 18a will be described with reference to FIG. FIG. 5 is a diagram schematically illustrating the cleaning pump 23, the cleaning nozzle 11a, the detergent charging nozzle 18a, and the like of the dishwasher WM.

  As shown in FIG. 5, when the cleaning pump 23 rotates forward, the cleaning water is supplied only to the first flow path 11. Since the rotary cleaning nozzle 31, the cleaning nozzle 11 a, and the cleaning nozzle 11 b are connected to the first flow path 11, when cleaning water is supplied to the first flow path 11, the rotary cleaning nozzle 31, Washing water is jetted from the washing nozzle 11a and the washing nozzle 11b, respectively.

  The rotary cleaning nozzle 31 is disposed on the lower side of the cleaning tank 40 and is configured to inject cleaning water upward. The cleaning nozzle 11b is disposed in the middle of the cleaning tank 40, and is configured to eject cleaning water slightly upward from the horizontal direction.

  The cleaning nozzle 11a is disposed on the upper side of the cleaning tank 40 and is configured to inject cleaning water downward. The cleaning nozzle 11 a is configured so that the cleaning water to be injected does not enter the detergent charging container 41.

  When the cleaning pump 23 is rotating forward, the cleaning water is supplied to the first flow path 11, but the cleaning water is not supplied to the second flow path 18. This configuration will be described with reference to FIG.

  The cleaning pump 23 applies pressure to the cleaning water as the rotor 232 housed in the casing 231 rotates, and sends the cleaning water to the first flow path 11 and the second flow path 18. A shutoff valve 233 is provided at a joint portion between the casing 231 and the second flow path 18. The shut-off valve 233 is configured to swing around the rotation shaft 233a. A first valve body 233b is connected to the rotation shaft 233a, and a second valve body 233c is provided at the tip of the first valve body 233b. The first valve body 233b is configured to swing around the rotation shaft 233a and close the entrance to the second flow path 18. The rotating shaft 233a is configured to be positioned on the upstream side with respect to the first valve body 233b when the cleaning pump 23 rotates forward. The second valve body 233c is configured to bend and protrude toward the center side of the cleaning pump 23 with respect to the first valve body 233b. Therefore, when the cleaning pump 23 rotates in the forward direction, the second valve body 233c is pushed outward of the cleaning pump 23 by the water flow of the washing water, and the first valve body 233b is pressed against the entrance to the second flow path 18. It is configured to be.

  Next, the case where the cleaning pump 23 rotates in the reverse direction will be described with reference to FIGS. As shown in FIG. 7, when the cleaning pump 23 rotates in the reverse direction, cleaning water is supplied to both the first flow path 11 and the second flow path 18. As described with reference to FIG. 6, since no valve is provided at the joint between the cleaning pump 23 and the first flow path 11, even if the cleaning pump 23 rotates reversely, the first flow path 11. Is supplied with washing water. However, since the discharge pressure decreases when the cleaning pump 23 rotates in the reverse direction compared to when the cleaning pump 23 rotates in the forward direction, the spray is injected from the rotary cleaning nozzle 31, the cleaning nozzle 11a, and the cleaning nozzle 11b, respectively. The momentum of the washing water is weakened. As described above, although the cleaning water sprayed from the rotary cleaning nozzle 31, the cleaning nozzle 11a, and the cleaning nozzle 11b is reduced, the cleaning water sprayed from these nozzles is the detergent in the step of supplying the detergent. Therefore, it is preferable to reduce the amount of spraying since it is prevented from being greatly scattered and adhered to tableware and solidifying.

  As shown in FIG. 8, when the cleaning pump 23 rotates in the reverse direction, the second valve body 233 c of the shielding valve 233 is pushed by the water flow of the cleaning water, and the first valve body 233 b moves away from the entrance of the second flow path 18. Rotate like so. Accordingly, the cleaning water is supplied to the second flow path 18, the cleaning water is jetted from the detergent charging nozzle 18 a, and the cleaning water is supplied to the detergent charging container 41. In addition, since the stopper 234 is provided in the vicinity of the rotating shaft 233a of the shielding valve 233, the shielding valve 233 is supported by the stopper 234 and maintains a predetermined open state.

  The detergent charging nozzle 18 a is provided at a position where the cleaning water to be sprayed reaches the detergent charging container 41. Therefore, the cleaning water sprayed from the detergent charging nozzle 18 a is supplied to the detergent charging container 41. Here, the detergent charging container 41 will be described with reference to FIGS. FIG. 9 is a view showing a state in which the door 43 of the dishwasher WM is opened. FIG. 10 is a diagram showing a cross section taken along the line AA of FIG. FIG. 11 is a view showing a BB cross section of FIG. 9.

  As shown in FIGS. 9 and 10, when the door 43 is opened to be in a substantially horizontal state, the detergent charging container 41 is in a state where the opening 41 a is directed upward. The detergent charging container 41 is pivotally supported on the inner surface of the door 43 by a rotating shaft 411, and a weight portion 412 is provided on the bottom surface thereof. Therefore, the detergent charging container 41 swings so that the weight portion 412 is positioned below the rotation shaft 411 as a center. With this configuration, when the door 43 is opened until it is substantially horizontal as shown in FIG. 11A, the detergent charging container 41 is in a state in which the opening 41a faces upward, and the detergent Can be inserted. Further, when the door 43 is closed as shown in FIG. 11B, the detergent charging container 41 is in a state in which the opening 41a faces upward, and the opening 41a faces the detergent charging nozzle 18a side. The cleaning water sprayed from the detergent charging nozzle 18 a is supplied into the detergent charging container 41.

  In the above-described example, the cleaning pump 23 is reversely rotated to supply cleaning water to the detergent charging nozzle 18a, and the cleaning water is sprayed from the cleaning charging nozzle 18a to the detergent charging container 41. The aspect of injecting the cleaning water into the charging container 41 is not limited to this. A first modification of the present embodiment is shown in FIGS.

  In the first modification shown in FIGS. 12 and 13, the cleaning pump 23 z always rotates in the forward direction, and the electromagnetic valve 44 is provided in the middle of the second flow path 18 without providing a shielding valve. As shown in FIG. 12, when the electromagnetic valve 44 is closed and the cleaning pump 23z is rotated forward, cleaning water is supplied only to the first flow path 11, and the rotary cleaning nozzle 31, the cleaning nozzle 11a, and the cleaning nozzle 11b Wash water is sprayed from each. On the other hand, as shown in FIG. 13, when the electromagnetic valve 44 is opened and the cleaning pump 23 z is rotated forward, cleaning water is supplied to both the first flow path 11 and the second flow path 18. The cleaning water is sprayed from the cleaning nozzle 11a and the cleaning nozzle 11b, and the cleaning water is sprayed from the detergent charging nozzle 18a. In this case, although the cleaning water sprayed from each of the rotary cleaning nozzle 31, the cleaning nozzle 11a, and the cleaning nozzle 11b is reduced, in the process of supplying the detergent, the cleaning water sprayed from these nozzles is the detergent. This is to prevent adhesion to tableware and the like, and to remove the adhesion, so there is no problem even if the injection amount is reduced.

  Subsequently, a second modification of the present embodiment is shown in FIGS. In the second modification shown in FIGS. 14 and 15, the cleaning pump 23z is always rotated in the forward direction, and the injection of cleaning water is controlled by changing the rotational speed. As shown in FIG. 14, when the cleaning pump 23z is rotated forward at a low rotational speed, cleaning water is supplied to the first flow path 11 and the second flow path 18, respectively. However, since the rotation speed of the cleaning pump 23z is low and the discharge pressure of the cleaning water is low, the amount of cleaning water sprayed from the rotary cleaning nozzle 31, the cleaning nozzle 11a, the cleaning nozzle 11b, and the detergent charging nozzle 18a is small. Therefore, the cleaning water sprayed from the rotary cleaning nozzle 31, the cleaning nozzle 11a, and the cleaning nozzle 11b does not reach the detergent charging container 41, and the cleaning water sprayed from the detergent charging nozzle 18a is also the detergent charging container 41. Not reach.

  On the other hand, as shown in FIG. 15, when the rotational speed of the cleaning pump 23 z is increased and rotated forward, the cleaning water is supplied to the first flow path 11 and the second flow path 18 with a high discharge pressure. For this reason, the cleaning agent sprayed from the detergent charging nozzle 18 a reaches the detergent charging container 41, and the cleaning water sprayed from the detergent charging nozzle 18 a is supplied into the detergent charging container 41.

  In the aspect of changing the discharge pressure of the cleaning water from the cleaning pump 23z, the detergent charging nozzle 18b shown in FIGS. 16 and 17 may be used instead of the detergent charging nozzle 18a. The detergent charging nozzle 18 b shown in FIGS. 16 and 17 is configured by a support 181 and a nozzle 182. The nozzle 182 has an elongated cylindrical shape, and is configured to be able to advance and retreat with respect to the support body 181. A first injection hole 182a is formed at the tip of the nozzle 182 in the middle of the cylindrical tube. Second injection holes 182b are respectively provided.

  As shown in FIG. 16, when the discharge pressure of the cleaning water supplied from the cleaning pump 23z to the detergent charging nozzle 18b is low, the nozzle 182 is in a state where it is housed in about half of the inside of the support 181. The two injection holes 182b are hidden inside the support 181. Accordingly, in this state, the cleaning water is jetted only from the first jet hole 182a.

  On the other hand, as shown in FIG. 17, when the discharge pressure of the cleaning water supplied from the cleaning pump 23z to the detergent charging nozzle 18b is high, the nozzle 182 further protrudes from the support 181 and the second injection hole 182b. Is in a state of coming out of the support 181. Accordingly, in this state, the cleaning water is ejected not only from the first injection hole 182a but also from the second injection hole 182b. In the state shown in FIG. 17, if the detergent charging container is disposed at a position where the cleaning water sprayed from the second injection hole 182b reaches, the detergent is reliably charged by changing the discharge pressure of the cleaning water from the cleaning pump 23z. By supplying cleaning water to the container, it becomes possible to scatter the detergent or overflow with the cleaning water.

It is a figure which shows the structure of the dishwasher which concerns on this embodiment. It is a figure for demonstrating transmission / reception of the signal of CPU integrated in the dishwasher shown in FIG. It is a figure which shows the operation panel attached to the dishwasher shown in FIG. It is a time chart for demonstrating operation | movement of the dishwasher shown in FIG. It is a figure for demonstrating the injection state of the washing water from a washing nozzle and a detergent injection | throwing-in nozzle. It is a figure for demonstrating a washing pump. It is a figure for demonstrating the injection state of the washing water from a washing nozzle and a detergent injection | throwing-in nozzle. It is a figure for demonstrating a washing pump. It is a figure for demonstrating a detergent charging container. It is a figure for demonstrating a detergent charging container. It is a figure for demonstrating a detergent charging container. It is a figure for demonstrating the injection state of the washing water from the washing nozzle and the detergent injection | throwing-in nozzle in the modification of this embodiment. It is a figure for demonstrating the injection state of the washing water from the washing nozzle and the detergent injection | throwing-in nozzle in the modification of this embodiment. It is a figure for demonstrating the injection state of the washing water from the washing nozzle and the detergent injection | throwing-in nozzle in the modification of this embodiment. It is a figure for demonstrating the injection state of the washing water from the washing nozzle and the detergent injection | throwing-in nozzle in the modification of this embodiment. It is a figure for demonstrating the modification of a detergent injection | throwing-in nozzle. It is a figure for demonstrating the modification of a detergent injection | throwing-in nozzle.

Explanation of symbols

  DESCRIPTION OF SYMBOLS WM ... Tableware washing machine, 10 ... Main body, 40 ... Washing tank, 11 ... 1st flow path, 11a ... Washing nozzle, 12 ... Water supply port, 13 ... Water supply valve, 14 ... Water level sensor, 15 ... Water level sensor, 16 ... Water level Sensors 17... Float 18 18 Second flow path 18 a Detergent injection nozzle 19 Temperature sensor 20 Hot air heater 21 Fan 22 Air inlet 23 Wash pump 24 Drain pump 25 DESCRIPTION OF SYMBOLS ... Drain valve, 26 ... Water temperature sensor, 27 ... Hot water heater, 28 ... Leftover filter, 29 ... CPU, 30 ... Operation panel, 31 ... Rotating washing nozzle, 41 ... Detergent container, 42 ... Basket, 43 ... Door.

Claims (6)

A cleaning nozzle that injects cleaning water onto an object to be cleaned such as tableware disposed in the cleaning tank;
A detergent charging container which is provided for charging detergent into the cleaning tank and configured so that the cleaning water sprayed by the cleaning nozzle does not enter the interior;
A detergent charging nozzle provided at a position where cleaning water can be supplied to the detergent charging container;
A dishwasher comprising: control means for controlling the supply of washing water from the detergent charging nozzle,
The control means controls to dissolve the detergent contained in the detergent charging container into the cleaning water by supplying cleaning water to the detergent charging nozzle at a predetermined detergent charging timing. Machine. The detergent charging container is disposed at the top of the washing tank, and the detergent charging nozzle is disposed close to the detergent charging container,
A flow path for supplying cleaning water to the detergent charging nozzle;
A cleaning pump for supplying cleaning water to the flow path;
The dishwasher according to claim 1, further comprising: a shut-off valve for opening and closing a supply port of the cleaning water from the cleaning pump to the flow path. Comprising a telescopic nozzle that functions as the cleaning nozzle;
2. The dishwasher according to claim 1, wherein the nozzle extends at the detergent charging timing to approach the detergent charging container and functions as the detergent charging nozzle. A flow path for supplying cleaning water to the nozzle;
A cleaning pump for supplying cleaning water to the flow path,
The dishwasher according to claim 3, wherein the nozzle is extended by increasing a discharge pressure of the washing pump.   When performing preliminary cleaning for cleaning the object to be cleaned without putting a detergent into the cleaning tank, the discharge pressure of the cleaning pump is lowered and the nozzle is maintained in a contracted state. Item 4. A dishwasher according to Item 3. The detergent charging nozzle is directed toward the detergent charging container and is arranged downward from the top surface of the cleaning tank,
A cleaning pump for supplying cleaning water to the detergent charging nozzle;
The cleaning water sprayed from the detergent charging nozzle is configured to reach the detergent charging container by increasing the discharge pressure of the cleaning pump, and when the discharge pressure of the cleaning pump is low, the detergent charging nozzle The dishwasher according to claim 1, wherein the washing water sprayed from the container does not reach the detergent charging container.

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