JP2005296444A - Dish washer-drier - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent rinsing water in a rinsing process from contacting with garbage collected in a garbage filter. <P>SOLUTION: This dish washer-drier is formed by attaching the garbage filter 25 for collecting garbage Z separated from dishes in a washing process to a wash water circulating passage L1 for circulating wash water in the washing process. The dish washer-drier is constituted so as to form a rinsing water circulating passage L2 for circulating the rinsing water W' without contacting with the garbage Z collected in the garbage filter 25 in the rinsing process of rinsing the dishes by newly supplied rinsing water W' after finishing the washing process, for circulating the rinsing water W' in the rinsing water circulating passage L2 without contacting with the garbage Z collected in the garbage filter 25 in the washing process in the rinsing process. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a dishwasher for washing and drying dishes.

  Usually, in a dishwasher, a washing process for washing the dishes to be stored with washing water containing a detergent, a rinsing process for rinsing dishes with new water after the completion of the washing process, and a temperature after completion of the rinsing process. A drying process for drying with wind is to be performed.

  By the way, in the dishwasher having such a configuration, a leftover filter for collecting the leftovers separated from the dishes during washing is provided in the middle of the path through which the washing water circulates. .

  In the rinsing process, the process of circulating the rinse water through the same path through which the washing water circulates for a predetermined time and then draining it is repeated several times.

  As a conventionally known dishwasher / dryer, there has been proposed a dishwasher filter provided on the suction side of a washing pump that pumps washing water (see Patent Document 1).

JP-A-7-284468.

  However, as disclosed in the above-mentioned Patent Document 1, when a leftover filter is disposed on the suction side of a cleaning pump that pumps cleaning water, the rinsing water is collected in the leftover filter in the cleaning step in the rinsing step. In addition to being unsanitary, bad odor may be generated from the rinsing water because it will circulate through the leftovers.

  This invention is made | formed in view of said point, and it aims at making the rinse water in a rinse process not contact with the leftovers currently collected by the leftovers filter.

  In the present invention, as a first means for solving the above-described problem, the cleaning water is circulated in a main body case having a cleaning chamber for storing tableware and a cleaning process for cleaning the tableware stored in the cleaning chamber. A dishwasher / dryer in which a wastewater filter that collects the leftovers separated from the dishes in the washing process is attached to the washing water circulation path. In the rinsing step of rinsing the dishes with the rinse water thus formed, a rinse water circulation path in which the rinse water circulates without contacting the residual vegetables collected in the residual vegetable filter can be formed.

  By comprising as mentioned above, in a rinse process, rinse water will circulate through the rinse water circulation path | route which is not contacted with the residual vegetables collected by the residual filter in the washing | cleaning process. Therefore, the rinsing water and the leftovers are not brought into contact with each other, so that it is very hygienic and no odor is generated from the rinsing water.

  In the present invention, as a second means for solving the above-mentioned problems, in the dishwasher provided with the first means, the washing water circulation path and the rinse water circulation path are divided into a washing process and a rinsing process. It is also possible to connect via a passage switching mechanism that switches the passage in the case. In such a configuration, the passage switching mechanism can switch the passage from the washing water circulation path to the rinse water circulation path, and reliably perform the passage switching. be able to.

  In the present invention, as a third means for solving the above problems, in the dishwasher provided with the second means, the passage switching mechanism is provided on the upstream side of the leftover filter in the washing water circulation path. Can be constituted by a rotating body that communicates or closes and closes or communicates the rinsing water circulation path, and a driving means that rotationally drives the rotating body. In such a case, the rotating body is rotated by the driving means. The passage can be switched from the washing water circulation path to the rinse water circulation path only by driving, and the passage switching can be performed easily and reliably.

  In the present invention, as a fourth means for solving the above-described problem, in the dishwasher / dryer provided with the second means, the passage switching mechanism is configured so that the temperature of the washing water in the washing step is a predetermined temperature. It can also be configured to be switched by a thermally responsive member that operates when the temperature rises. In such a configuration, the temperature of the washing water rises as the washing process approaches the end. The passage switching is performed by the sensed thermal response member, and the passage switching from the washing water circulation path to the rinse water circulation path can be automatically performed at the end of the cleaning process.

  In the present invention, as a fifth means for solving the above problems, in the dishwasher provided with the fourth means, a spring made of a shape memory alloy is employed as the thermally responsive member, and the spring And a bias spring that applies a biasing force in a direction against the biasing force, and the movable member in the passage switching mechanism can be operated. In such a configuration, the spring of the shape memory alloy The movable member of the passage switching mechanism operates in accordance with the shape deformation, and the movable member is returned by the biasing force of the bias spring, so that the passage switching from the washing water circulation path to the rinse water circulation path can be automatically performed. .

  In the present invention, as a sixth means for solving the above-mentioned problem, in the dishwasher provided with the first means, the rinse water circulation path is collected by the leftover filter after the washing step. It is also possible to form the leftovers by discharging them from the outlet. In such a case, the leftovers collected in the leftover filter in the cleaning process are discharged from the outlets after the cleaning process. Since there is no leftovers in the vegetable filter, the rinse water flowing through the rinse water circulation path does not come into contact with the leftovers, so that it is very hygienic and no odor is generated from the rinse water.

  In the present invention, as a seventh means for solving the above-described problem, in the dishwasher provided with the sixth means, a bypass passage branched from the washing water circulation path to the discharge port is additionally provided. The waste vegetables can also be discharged through the bypass passage. In such a case, the waste vegetables collected in the waste filter in the washing step are passed through the bypass passage after the washing step. As a result, the leftovers can be reliably discharged.

  In the present invention, as an eighth means for solving the above-mentioned problem, in the dishwasher provided with the above-mentioned first means, the rinse water circulation path is used, and the residual vegetable filter is circulated through the wash water after the washing step. In this case, the rinse water circulation path is formed by retracting the leftover filter from the washing water circulation path, so that the rinse water flowing through the rinse water circulation path remains. It is no longer in contact with rape and is very hygienic and no odor is generated from the rinse water.

  In the invention of the present application, as a ninth means for solving the above-mentioned problem, in the dishwasher provided with the above-mentioned eighth means, evacuation of the leftover filter is carried out by moving the rinse water upward from the water level. In addition, a cover member that covers the upper part of the evacuated leftover filter can be attached, and in such a case, the leftovers collected in the leftover filter and the rinse water flowing through the rinse water circulation path Contact will be completely blocked, making it more hygienic.

  According to the first means of the present invention, there is provided a main body case having a cleaning chamber for storing tableware, and a cleaning water circulation path through which cleaning water circulates in a cleaning step for cleaning the tableware stored in the cleaning chamber. A dishwasher having a leftover filter that collects leftovers separated from the dishes in the washing step in the washing water circulation path, and the rinse water newly supplied after the washing step ends the rinse water In the rinsing process for rinsing dishes, the rinsing water is configured to form a rinsing water circulation path in which the rinsing water circulates without contacting with the residual vegetables collected in the residual vegetable filter. Since the rinse water circulates in the rinse water circulation path that does not come into contact with the leftovers collected in the leftover filter, the rinse water and the leftovers do not come into contact with each other. Will, with a very hygienic, there is an effect that also eliminated that bad smell is generated from the rinse water.

  As in the second means of the present invention, in the dishwasher provided with the first means, a passage switching mechanism for switching the washing water circulation path and the rinse water circulation path between the washing process and the rinsing process. In such a configuration, the passage can be switched from the washing water circulation path to the rinse water circulation path by the passage switching mechanism, and the passage switching can be surely performed.

  As in the third means of the present invention, in the dishwasher comprising the second means, the passage switching mechanism communicates or closes the upstream side of the leftover filter in the washing water circulation path and the rinse. A rotating body that closes or communicates with the water circulation path and a driving means that rotationally drives the rotating body can be configured. In such a configuration, the cleaning water circulation path can be obtained simply by rotationally driving the rotating body by the driving means. Therefore, the passage can be switched from the rinsing water circulation path to the rinse water circulation path, and the passage can be switched easily and reliably.

  As in the fourth means of the present invention, in the dishwasher provided with the second means, the passage switching mechanism is operated at the time when the temperature of the washing water in the washing step rises to a predetermined temperature. It can also be configured to be switched by a member. In such a configuration, when the cleaning process is nearing completion, the temperature of the cleaning water rises, and the path is switched by a thermally responsive member that senses the temperature increase. Thus, the passage can be automatically switched from the washing water circulation path to the rinse water circulation path in accordance with the end of the washing process.

  As in the fifth means of the present invention, in the dishwasher equipped with the fourth means, a spring made of a shape memory alloy is adopted as the thermally responsive member, and the spring and the direction against the urging force thereof are employed. The movable member in the passage switching mechanism can be operated by a bias spring that applies an urging force to the passage switching mechanism, and in such a case, the passage switching mechanism is accompanied with the shape deformation of the spring made of a shape memory alloy. The movable member is operated, and the movable member is returned by the biasing force of the bias spring, so that the passage can be automatically switched from the cleaning water circulation path to the rinse water circulation path.

  As in the sixth means of the present invention, in the dishwasher provided with the first means, the rinse water circulation path is used to remove the residual vegetables collected in the residual filter after the cleaning process from the outlet. It can also be formed by discharging, in such a case, the leftovers collected in the leftover filter in the washing step are discharged from the discharge port after the washing step, and there is no leftovers in the leftover filter Therefore, the rinse water flowing through the rinse water circulation path does not come into contact with the leftovers, which is extremely hygienic and does not cause a bad odor from the rinse water.

  As in the seventh means of the present invention, in the dishwasher provided with the sixth means, a bypass passage branched from the washing water circulation path to the discharge port is provided, and the remaining through the bypass passage. It can also be configured to discharge vegetables, in which case the remaining vegetables collected in the residual filter in the cleaning process are discharged from the outlet through the bypass passage after the cleaning process is completed. Therefore, it is possible to reliably discharge leftovers.

  As in the eighth means of the present invention, in the dishwasher provided with the first means, the rinsing water circulation path is formed by retracting the leftover filter from the washing water circulation path after completion of the washing step. In such a case, the rinse water circulation path is formed by retracting the residual vegetable filter from the washing water circulation path, so that the rinse water flowing through the rinse water circulation path does not come into contact with the residual vegetables. It is extremely hygienic and eliminates the occurrence of odors from the rinse water.

  As in the ninth means of the present invention, in the dishwasher equipped with the eighth means, the leftover filter is retracted by moving the rinse water upward from the level of the rinse water, and the residual vegetables in the retracted state A cover member covering the upper part of the filter can also be attached, and in such a case, contact between the leftovers collected in the leftover filter and the rinse water flowing through the rinse water circulation path is completely prevented. And become more hygienic.

  Hereinafter, several preferred embodiments of the present invention will be described with reference to the accompanying drawings.

First Embodiment FIGS. 1 to 5 show a dishwasher according to a first embodiment of the present invention.

  As shown in FIGS. 1 to 3, the dishwasher includes a main body case 1 having a vertically long rectangular parallelepiped shape having a door 2 that can be opened and closed on the front surface. In the main body case 1, a washing room for storing dishes is provided. 3 and a machine room 4 which is located below the cleaning room 3 and in which various devices are arranged. The main body case 1 has a double wall structure having a space 1 a between the peripheral wall of the cleaning chamber 3. The door 2 is opened and closed in the front-rear direction with a pivot 5 provided at the lower end as a center of rotation. Reference numerals 6 and 7 are seal members for ensuring the sealing performance in the cleaning chamber 3 when the door 2 is closed.

  In the cleaning chamber 3, a pair of lower rotary spray nozzles 8, 8 located on the bottom side, a pair of upper rotary spray nozzles 9, 9 located on the top side, and a number of rear rotary nozzles located on the back side thereof. Fixed injection nozzles 10, 10,... Are provided. Each of the lower rotary spray nozzles 8 has a large number of spray ports 8a, 8a,..., And is rotated about the central axis 11 by the spraying force of the cleaning water sprayed from the spray ports 8a, 8a,. It is supposed to be. Each upper rotary injection nozzle 9 has a pair of injection ports 9a, 9a, and is rotated about the central axis 12 by the injection force of the washing water injected from the injection ports 9a, 9a. It has become. Each of the fixed spray nozzles 10 has a single spray port 10a, and the cleaning water is sprayed in an oblique direction.

  Further, in the cleaning chamber 3, a lower table storage basket 13 positioned directly above the lower rotary spray nozzles 8, 8 in the lower stage, and an upper stage positioned directly below the upper rotary spray nozzles 9, 9 in the upper stage. A tableware storage basket 14 and a middle tableware storage basket 15 located at a portion sandwiched between the fixed injection nozzles 10 and 10 in the middle stage are provided. The lower tableware storage basket 13 mainly stores large tableware (for example, Western dishes and bowls), and the upper tableware storage basket 14 mainly includes small tableware (for example, a cup of tea and a bowl). The middle tableware storage basket 15 stores small items (for example, a cup or the like).

  In the machine room 4, a cleaning pump 16, a hot air supply means 17, and the like are disposed. The partition wall 18 that partitions the cleaning chamber 3 and the machine chamber 4 is provided with a water storage unit 19 that temporarily stores water supplied into the cleaning chamber 3, and the water storage unit 19 includes the cleaning pump 19. 16 is connected to the water absorption side through a pipe 20. The discharge side of the cleaning pump 16 is connected to the lower rotary injection nozzles 8 and 8, the upper rotary injection nozzles 9 and 9, and the fixed injection nozzles 10, 10. , 22 and 22 are connected. In the middle of the pipe 21, there is provided an on-off valve 23 that is opened at the start of cleaning and closed at the end of cleaning. The water storage unit 19 includes an electric heater 24 for heating the washing water to warm water, and a leftover filter 25 for separating and collecting the remaining vegetables Z separated from the dishes at the time of washing. Is provided.

  The hot air supply means 17 is connected to a blower fan 26 disposed in the machine room 4, a drying heater 27 provided in the vicinity of the discharge port of the blower fan 26, and a discharge port of the blower fan 26. The air passage 28 is formed in the side wall portion of the space 1 a in the main body case 1. Reference numeral 26a denotes a fan motor. The air passage 28 is configured by a passage that rises from the machine room 4 side in the space 1 a, curves from the middle part of the cleaning chamber 3, goes downward, and reaches the air outlet 29 formed at the bottom of the cleaning chamber 3. Has been. If it does in this way, distribution resistance of warm air A which flows through ventilation passage 28 can be suppressed small, and pressure loss can be suppressed small.

  As shown in FIG. 2, an exhaust port 30 serving as an outlet for the hot air A supplied into the cleaning chamber 3 is formed at the upper end portion of the door 2. A temperature sensor 31 acting as exhaust temperature detecting means for detecting the temperature of the exhaust from the chamber 3 is attached.

  In the drawing, reference numeral 32 denotes a water supply pipe for cleaning water to the cleaning chamber 3, and the water supply pipe 32 is connected to a water tap. Reference numeral 33 is an electromagnetic valve for water supply, 34 is an operation panel provided on the front surface of the main body case 1 and provided with various operation switches and various display units, 35 is a control board acting as a controller, and 36 is a water storage unit 19. This is a passage switching mechanism for switching the passage of the washing water between the time of washing and the time of rinsing provided at the outlet portion.

  As shown in FIGS. 4 (a) and 4 (b), the passage switching mechanism 36 is disposed at the outlet of the water reservoir 19 and includes a filter case 37 provided with the leftover filter 25 on the lower surface 37b, A movable member 38 is supported at the center of the filter case 37 so as to be slidable up and down. Washing water W flows around the support portion of the movable member 38 on the upper surface 37a of the filter case 37. An upper washing water circulation port 39 is formed, while a lower washing water circulation port 40 through which the washing water W circulates is formed on the lower surface 37 b of the filter case 37, and leftover vegetables are left in the lower washing water circulation port 40. A filter 25 is provided.

  On the other hand, the movable member 38 includes a cylindrical body 42 having a rinse water flow passage 41 through which the rinse water W ′ flows, and an inlet 41 a of the rinse water flow passage 41 stands on an upper surface 37 a of the filter case 37. It is normally closed by an annular wall 44 that also serves as a spring receiver for a spring 43 that urges the movable member 38 (specifically, the cylindrical body 42) upward, while the outlet of the rinse water flow passage 41 is closed. 41b passes through the leftover filter 25 and opens below, and a sub-filter 45 that collects fine dust generated during rinsing is provided at the tip of the filter 41b.

  Further, on the outer periphery of the cylindrical body 42, an upper closing member 46 that is located in the filter case 37 and closes the upper cleaning water circulation port 39 when the movable member 38 is moved upward, and a lower part of the filter case 37. A lower closing member 47 that closes the lower washing water circulation port 40 when the movable member 38 is moved upward is attached.

  Further, the movable member 38 is provided with a hollow head portion 48 that is located above the cylindrical body 42 and serves as an operation portion when the movable member 38 is pressed and operated. Includes a shape memory alloy spring 49 that acts as a thermally responsive member that operates by sensing a predetermined temperature, a bias spring 50 that exerts a biasing force in a direction against the biasing force of the spring 49, and both springs 49. , 50 and a lock member 51 that holds the movable member 38 in a downward movement state. The spring 49 is extended and deformed when a predetermined temperature is detected, and the detected temperature is the temperature of the cleaning water W at the end of the cleaning process (the temperature is increased to double the sterilization). ing. The lock member 51 is movable horizontally, and before the thermal response of the spring 49, the lock member 51 engages with an engagement piece 52 provided upright from the upper surface 37a of the filter case in the annular wall 43. The movable member 38 is held in the downward movement state.

  The operation of the passage switching mechanism 36 configured as described above will be described.

While the water temperature is low in the cleaning process, as shown in FIG. 4 (a), the spring 49 is in a contracted state, and the movable member 38 is kept in the downward movement state due to the engagement between the lock member 51 and the engagement piece 52. The upper and lower wash water circulation ports 39 and 40 are opened, and the inlet 41 a of the rinse water flow passage 41 is closed by the annular wall 43. Accordingly, the washing water W is circulated through the upper washing water circulation port 39, the leftover vegetable filter 25 and the lower washing water circulation port 40, and the upper washing water circulation port 39, the leftover vegetable filter 25 and the lower washing water circulation port. 40 constitutes a part of a washing water circulation path L ₁ described later.

At the end of the cleaning process, the spring 49 is thermally activated and extended from the point where the water temperature rises for sterilization, so that the lock member 51 moves horizontally as shown in FIG. The lock member 51 and the engagement piece 52 are disengaged, the movable member 38 is moved upward by the biasing force of the spring 43, the upper and lower cleaning water flow ports 39 and 40 are closed by the upper and lower closing members 46 and 47, and the rinse water flow The inlet 41a of the passage 41 is opened. Therefore, in the rinsing step, the rinsing water W ′ is circulated through the rinsing water flow passage 40 and does not come into contact with the residual vegetables Z collected in the residual vegetable filter 25. That is, the rinsing water flow passage 41 constitutes a part of the rinsing circulation path L ₂ described later.

  At the time of the next cleaning, it is possible to return to the state shown in FIG. 4A by manually pressing the head portion 48 and pushing down the movable member 38.

Next, a cleaning process, a rinsing process, and a drying process in the dishwasher having the above configuration will be described.
(I) Cleaning process The door 2 is opened to separate and store the dishes to be stored in the storage baskets 13 to 15 in the cleaning chamber 3. Thereafter, the electromagnetic valve 33 is opened to start water supply to the cleaning chamber 3, and a predetermined amount of cleaning water is stored in the cleaning chamber 3. When the water level switch 38 detects a predetermined water level, the electromagnetic valve 33 is closed and water supply is stopped. After that, when a predetermined amount of detergent is put into the water storage unit 19 of the cleaning chamber 3 and the electric heater 24 and the cleaning pump 16 are started to drive, the cleaning water becomes hot water heated by the electric heater 24, and the piping 21 and the branch are branched. It is pumped to the respective injection nozzles 8, 9, and 10 through the pipes 22, 22, and 22 and is injected from the injection nozzles 8, 9, and 10 for cleaning dishes. The wash water used for washing is returned to the water storage unit 19 and recirculated. In the passage switching mechanism 36, the wash water circulation port 39, the leftover vegetable filter 25, and the lower wash water circulation port 40 pass through. Become. This cleaning is performed for a predetermined time corresponding to the amount of tableware, and when the predetermined time has elapsed, the drive of the electric heater 24 and the cleaning pump 16 is stopped, and cleaning water is supplied from a drain port (not shown). After being drained, the cleaning is completed. At this time, the leftovers Z separated from the dishes is collected in the leftovers filter 25. In this case, the cleaning water W pumped from the cleaning pump 16 is injected into the cleaning chamber 3 through the pipe 21, the branch pipes 22, 22, 22 and the injection nozzles 8, 9, 10, and the upper cleaning water circulation in the water storage unit 19. It passes through the mouth 39, the leftover filter 25 and the lower washing water circulation port 40 and is sucked into the washing pump 16 through the pipe 20, and the washing pump 16, the pipe 21, the branch pipes 22, 22, 22 and the injection nozzle. The washing water circulation path L ₁ is formed by the 8, 9, 10, the washing chamber 3, the water storage unit 19, the upper washing water circulation port 39, the leftover filter 25, the lower washing water circulation port 40, and the pipe 20. It is.

At the end of the cleaning process, the temperature of the cleaning water W is raised to a temperature at which sterilization can be performed. The engagement with the engagement piece 52 is released, and the movable member 38 moves upward. That is, passage switching by the passage switching mechanism 36 is performed.
(II) Rinsing Step When the washing step is completed, the electromagnetic valve 33 is opened to start water supply to the washing chamber 3 and a predetermined amount of rinsing water is stored in the washing chamber 3. When the water level switch 38 detects a predetermined water level, the electromagnetic valve 33 is closed and water supply is stopped. Thereafter, when the cleaning pump 16 is started to be driven, the rinse water is pumped to each of the injection nozzles 8, 9, 10 via the pipe 21 and the branch pipes 22, 22, 22, and is injected from the injection nozzles 8, 9, 10. And served for tableware rinsing. The rinse water provided for rinsing returns to the water storage unit 19 again and is recirculated, but the passage switching mechanism 36 does not contact the leftovers Z (in other words, does not pass through the leftovers filter 25). 41 is distributed. This rinsing is performed for a predetermined time according to the amount of tableware, and when the predetermined time has elapsed, the driving of the cleaning pump 16 is stopped and the rinsing water is drained from a drain port (not shown), The first rinse is completed. The rinsing process is completed by performing the rinsing process a predetermined number of times. In this case, the rinsing water W ′ pumped from the cleaning pump 16 is injected into the cleaning chamber 3 through the pipe 21, the branch pipes 22, 22, 22 and the injection nozzles 8, 9, 10, and the water storage unit 19, the rinsing water flow passage. 41, it is to be sucked into the cleaning pump 16 through the pipe 20, and the cleaning pump 16, the pipe 21, the branch pipes 22, 22, 22, the injection nozzles 8, 9, 10, the cleaning chamber 3, the water storage section 19, and the rinse The rinse water circulation path L ₂ is formed by the water flow passage 41 and the pipe 20.
(III) Drying Step When the rinsing step is completed, the blower fan 26 and the drying heater 27 constituting the hot air supply means 17 are started to drive, and the hot air A is blown into the cleaning chamber 3 from the outlet of the blower passage 28, and the tableware It is used for drying. This drying is performed for a predetermined time corresponding to the amount of tableware, and when the predetermined time has elapsed, the driving of the blower fan 26 and the drying heater 27 is stopped, and the drying is completed.

  By the way, the branch pipe 22 connected to the upper rotary injection nozzle 9 of the cleaning chamber 3 and the water supply pipe 32 are connected via a three-way valve, and at the final stage of the rinsing process downstream of the three-way valve in the branch pipe 22. In the final stage of the rinsing process, a heater to be energized is attached to switch the three-way valve so that the water supply pipe 32 and the upper rotary injection nozzle 9 are communicated with each other. The clean water supplied from the water is heated by the heater and boiled and used as rinse water, which is hygienic and sensually unclean.

Second Embodiment FIGS. 5 to 8 show a passage switching mechanism portion in a dishwasher according to a second embodiment of the present invention.

  In this case, the passage switching mechanism 36 has a bottomed cylindrical shape, and includes a rotating body 53 having an opening 54 on one side of a side wall 53a thereof, and a driving unit 55 that rotationally drives the rotating body 53. An annular filter unit 56 provided with the leftover filter 25 is disposed at the bottom so as to surround the rotating body 53, and an annular passage 57 surrounding the filter unit 56 is provided. The annular passage 57 is connected to the pipe 20 on the suction side of the cleaning pump 16. The filter unit 56 and the annular passage 57 are divided into two passages by a partition wall 58. The first branch filter 56a and the first branch passage 57a, which serve as a passage for the cleaning water W, and the passage for the rinse water W '. Are divided into a second branch filter 56b and a second branch passage 57b. A water stop that operates by a water flow and closes the outlet of one of the branch passages 57a or 57b at a joining portion (in other words, a connection portion with the pipe 20) of the first branch passage 57a and the second branch passage 57b. A valve 59 is provided.

  The driving means 55 includes a solenoid 59 that pushes up the rotation center shaft 53b of the rotating body 53 when energized, and an upper and lower ratchet mechanism 60 that rotates the rotating body 53 by 90 ° each time the rotation center shaft 53b is pushed up. 61. Reference numeral 62 denotes a detachable lid that covers the upper portion of the filter unit 56. When the lid 62 is removed, the filter unit 56 can be removed.

  The path switching mechanism 36 configured as described above operates as follows.

In the cleaning process, as shown in FIGS. 5 and 6, the opening 54 of the rotator 53 is located at a position facing the first branch passage 57 a in the annular passage 57, and the cleaning water W passes through the opening 54. It flows into the filter unit 56, passes through the leftover filter 25 in the first branch filter 56a, and is sucked into the cleaning pump 16 through the first branch passage 57a. In this process, the leftovers Z are collected by the leftovers filter 25. At this time, the water stop valve 59 is pushed by the water flow of the wash water W flowing through the first branch passage 57a and closes the outlet of the second branch passage 57b. That is, in this embodiment, the openings 54, the first branch filter 56a, is the Zan'na filter 25 and the first branch passage 57a is in the constitute a part of the washing water distribution channels L _1.

On the other hand, in the rinsing process, the energization of the solenoid 59 is repeated twice, whereby the rotation center shaft 53b of the rotating body 53 is pushed up twice. Then, the rotating body 53 is rotated by 180 ° by the ratchet mechanisms 60 and 61, and the opening 54 is positioned to face the second branch passage 57 b in the annular passage 57 as shown in FIGS. 7 and 8. The When rinsing is started in this state, the rinsing water W ′ flows into the filter unit 56 from the opening 54, passes through the leftover filter 25 in the second branch filter 56b, and passes through the second branch passage 57b. It is sucked into the washing pump 16. Therefore, the rinsing water W ′ is circulated without contacting the leftovers Z. At this time, the water stop valve 59 is pushed by the water flow of the rinse water W ′ flowing through the second branch passage 57b to close the outlet of the first branch passage 57a. That is, in this embodiment, the openings 54, it has become a possible second branch filter 56b, Zan'na filter 25 and the second branch passage 57b constitutes a part of the rinsing water distribution channel L _2.

  As described above, in the present embodiment, in the rinsing process, the rinsing water W ′ is circulated without coming into contact with the leftovers Z, which is very hygienic. Even when the door 2 is opened, the filter unit 56 is covered with the lid 62, so that the leftovers Z are not visible, and it is visually hygienic. Furthermore, since the leftovers Z collected by the leftovers filter 25 are the operation end | finished in the state isolated by the rotary body 53, the nasty smell from the leftovers Z does not fill up in a store | warehouse | chamber.

  Since other configurations and operational effects are the same as those in the first embodiment, the description thereof is omitted.

Third Embodiment FIGS. 9 to 12 show a passage switching mechanism portion in a dishwasher according to a third embodiment of the present invention.

  In this case, as in the second embodiment, the passage switching mechanism 36 has a bottomed cylindrical shape, and has a rotating body 53 having an opening 54 on one side of the side wall 53a, and the rotary body 53 is driven to rotate. And driving means 55 to be driven. An annular filter unit 56 provided with the leftover filter 25 is disposed at the bottom so as to surround the rotating body 53, and an annular passage 57 surrounding the filter unit 56 is provided. The annular passage 57 is connected to the pipe 20 on the suction side of the cleaning pump 16. The filter unit 56 and the annular passage 57 are divided into two passages by a partition wall 58. The first branch filter 56a and the first branch passage 57a, which serve as a passage for the cleaning water W, and the passage for the rinse water W '. Are divided into a second branch filter 56b and a second branch passage 57b. A water stop that operates by a water flow and closes the outlet of one of the branch passages 57a or 57b at a joining portion (in other words, a connection portion with the pipe 20) of the first branch passage 57a and the second branch passage 57b. A valve 59 is provided.

  Further, the driving means 55 is constituted by a step motor 63 in which a rotating shaft 63 a is pivotally attached to the rotation center of the rotating body 53. Reference numeral 62 denotes a detachable lid that covers the upper portion of the filter unit 56. When the lid 62 is removed, the filter unit 56 can be removed.

  The path switching mechanism 36 configured as described above operates as follows.

In the cleaning process, as shown in FIGS. 9 and 10, the opening 54 of the rotating body 53 is located at a position facing the first branch passage 57 a in the annular passage 57, and the cleaning water W passes through the opening 54. It flows into the filter unit 56, passes through the leftover filter 25 in the first branch filter 56a, and is sucked into the cleaning pump 16 through the first branch passage 57a. In this process, the leftovers Z are collected by the leftovers filter 25. At this time, the water stop valve 59 is pushed by the water flow of the wash water W flowing through the first branch passage 57a and closes the outlet of the second branch passage 57b. That is, in this embodiment, the openings 54, the first branch filter 56a, is the Zan'na filter 25 and the first branch passage 57a is in the constitute a part of the washing water distribution channels L _1.

On the other hand, in the rinsing process, the rotary body 53 is rotated 180 ° by the drive of the step motor 63, and the opening 54 is formed in the second branch passage 57 b in the annular passage 57 as shown in FIGS. 11 and 12. It is a position that faces When rinsing is started in this state, the rinsing water W ′ flows into the filter unit 56 from the opening 54, passes through the leftover filter 25 in the second branch filter 56b, and passes through the second branch passage 57b. It is sucked into the washing pump 16. Therefore, the rinsing water W ′ is circulated without contacting the leftovers Z. At this time, the water stop valve 59 is pushed by the water flow of the rinse water W ′ flowing through the second branch passage 57b to close the outlet of the first branch passage 57a. That is, in this embodiment, the openings 54, it has become a possible second branch filter 56b, Zan'na filter 25 and the second branch passage 57b constitutes a part of the rinsing water distribution channel L _2.

  As described above, in the present embodiment, in the rinsing process, the rinsing water W ′ is circulated without coming into contact with the leftovers Z, which is very hygienic. Even when the door 2 is opened, the filter unit 56 is covered with the lid 62, so that the leftovers Z are not visible, and it is visually hygienic. Furthermore, since the leftovers Z collected by the leftovers filter 25 are the operation end | finished in the state isolated by the rotary body 53, the nasty smell from the leftovers Z does not fill up in a store | warehouse | chamber.

  Since other configurations and operational effects are the same as those in the first embodiment, the description thereof is omitted.

Fourth Embodiment FIG. 13 shows a passage switching mechanism portion in a dishwasher according to a fourth embodiment of the present invention.

  In this case, the outlet side of the water storage unit 19 is divided into a washing water passage 64 and a rinsing water passage 65 by a partition wall 66, and mesh plates 67 and 68 are disposed at the inlets of both the passages 64 and 65, respectively. Has been. In addition, a leftover filter 25 is disposed on the upper surface of the mesh plate 67 on the washing water passage 64 side. The washing water passage 64 and the rinsing water passage 65 are switched by the passage switching mechanism 36. The passage switching mechanism 36 includes a rotating shaft 69 supported on the upper end portion of the partition wall 66, a closing plate 70 attached to the rotating shaft 69, and a motor 71 that rotationally drives the rotating shaft 69. The closing plate 70 has an area capable of closing the entire upper surfaces of the leftover filter 25 and the mesh plate 68. When the cleaning water W is flowing through the cleaning water passage 64 at the lower end of the partition wall 66, the outlet of the rinsing water passage 65 is closed by the momentum of the water flow of the cleaning water W, and the rinsing water passage 65 is passed through the rinsing water W ′. A water stop valve 72 that opens the outlet of the rinse water passage 65 by the momentum of the water flow of the rinse water W ′ is provided.

  The path switching mechanism 36 configured as described above operates as follows.

In the cleaning process, as shown by a solid line in FIG. 13, the closing plate 70 closes the mesh plate 68 on the rinse water passage 65 side, and the cleaning water W passes through the leftover filter 25 and the mesh plate 67. Then, it passes through the washing water passage 64 and is sucked into the washing pump 16 through the pipe 20. In this process, the leftovers Z are collected by the leftovers filter 25. At this time, the water stop valve 72 is pushed by the water flow of the wash water W flowing through the wash water passage 64 to close the outlet of the rinse water passage 65. That is, in this embodiment, Zan'na filter 25 is has become a possible mesh plate 67 and the wash water passage 64 constitutes a part of the washing water distribution path L _1.

On the other hand, in the rinsing process, as shown by a chain line in FIG. 13, the motor 71 is driven to invert the closing plate 70, and the upper surface of the leftover filter 25 is closed by the closing plate 70. Then, the rinse water W ′ passes through the mesh plate 68, passes through the rinse water passage 65, and is sucked into the cleaning pump 16 through the pipe 20. At this time, the water stop valve 72 is opened by the momentum of the water flow through the rinse water passage 65. That is, in this embodiment, it has become an be part of a mesh plate 68 and the rinsing water passage 65 is rinsing water distribution channel L _2.

  As described above, in the present embodiment, in the rinsing process, the rinsing water W ′ is circulated without coming into contact with the leftovers Z, which is very hygienic.

By the way, as shown in FIG. 14 and FIG. 15, if a large number of rectifying ribs 73, 73... Inclined obliquely higher than the normal water level Y are attached to the mouth of the water reservoir 19, the washing flowing into the water reservoir 19 The flow of water W becomes vortex E. Then, in the leftovers filter 25, the leftovers Z caught in the vortex E are concentrated and collected in one place. Therefore, if the leftovers reservoir 25a is formed at the center of the leftovers filter 25, the leftovers 25a is concentrated and collected. In this way, by closing the rinsing step the Zan'na reservoir 25a, it is possible to form the rinse water circulation path L ₂ does not contact the Zan'na Z. Note that if the diameter of the leftover portion 25a is made smaller than the suction port of the cleaning pump 16, the generation of the vortex E is increased, but the cleaning power may be reduced due to foam biting. The diameter is preferably equal to or larger than the suction port of the cleaning pump 16.

  Since other configurations and operational effects are the same as those in the first embodiment, the description thereof is omitted.

Fifth Embodiment FIG. 16 shows a dishwasher according to a fifth embodiment of the present invention.

In this case, in the washing water circulation path L ₁ from the washing pump 16 through the lower rotary injection nozzle 8 through the washing chamber 3 to the water reservoir 19, a bypass passage 75 branches from the outlet side of the water reservoir 19 and reaches the drain pipe 74. In the water storage part 19, a leftover filter 25 is arranged in a vertical arrangement in the vicinity of the branch part of the bypass passage 75 with its collection surface inclined downward. A drain trap 76 lifted to a position higher than the normal water level Y is provided in the middle of the drain pipe 74. The drain trap 76 has a check valve 77 for preventing a back flow of water. It is installed. With this configuration, in the cleaning step, cleaning water W, the cleaning pump 16, the lower rotating spraying nozzle 8, the cleaning chamber 3, circulates the washing water circulation path L ₁ comprising a water reservoir 19 and Zan'na filter 25, the In the process, the leftovers Z are collected in the leftovers filter 25. When draining at the end of the cleaning process, first, the cleaning pump 16 is first driven on the drain side for a moment and then stopped. Then, the wastewater is discharged through the bypass passage 75 and the drainage pipe 74 according to the principle of siphon. At this time, the leftovers remaining in the wastewater and the leftovers Z collected in the leftover filter 25 are the wastewater. It will be discharged together. Therefore, when the drainage is finished, there is no leftovers Z in the leftovers filter 25. Then, even if water is supplied, the supplied water is not discharged unless the cleaning pump 16 is driven on the drain side by the action of the drain trap 76. When the washing pump 16 is driven on the washing side, the rinse water W ′ circulates through the washing pump 16, the lower rotary spray nozzle 8, the washing chamber 3, the water storage unit 19, and the leftover filter 25. from where Zan'na Z is not present in the filter 25, so that the rinsing water circulation path L ₂ does not contact the Zan'na Z is formed.

  In this way, the rinsing water W ′ does not come into contact with the leftovers Z, and the leftovers Z do not remain in the cabinet, which makes it very hygienic. In addition, since it is not necessary to drive the washing pump 16 almost at the time of drainage, low noise and energy saving are achieved. Furthermore, the structure is simple, which is advantageous in terms of cost.

Sixth Embodiment FIG. 17 shows a main part of a dishwasher according to a sixth embodiment of the present invention.

  In this case, a lever-shaped swing rod 78 is pivotally supported by the leftover filter 25, and a pivot shaft 80 pivotally supported by a bearing 79 is provided at the upper end of the swing rod 78. Is provided. The rotating shaft 80 is driven to rotate by a motor 81 acting as a driving means. That is, the swing rod 78 is swung upward by the rotation of the rotation shaft 80 as the motor 81 is driven, and the leftover filter 25 is retracted above the normal water level Y as shown by the dotted line. -ing Further, a cover member 82 is provided to cover the upper part of the leftover filter 25 in the retracted state. The cover member 82 has a function of preventing the rinse water W ′ sprayed into the cleaning chamber 3 from being applied to the remnant leftover filter 25.

By configuring as described above, in the cleaning process, as shown by the solid line in FIG. 17, the leftover filter 25 is disposed at a predetermined position (that is, the outlet side of the water storage unit 19). Circulates in the cleaning water circulation path L ₁ including the cleaning pump 16, the rotary spray nozzles 8, 9, 10, the cleaning chamber 3, the water storage unit 19, and the leftover filter 25. When the cleaning process is completed, the motor 81 is driven to retract the leftover filter 25 above the normal water level Y as indicated by the dotted line in FIG. At this time, the rinsing water W ′ circulates in the rinsing water circulation path L ₂ including the cleaning pump 16, the rotary injection nozzles 8, 9, 10, the cleaning chamber 3 and the water storage unit 19. The rinse water circulation path L _2, Zan'na filter 25 is not present.

  In this way, the rinsing water W ′ does not come into contact with the leftovers Z, which makes it very hygienic.

  Since other configurations and operational effects are the same as those in the first embodiment, the description thereof is omitted.

7th Embodiment The principal part in the dishwasher concerning 7th Embodiment of this invention is shown by FIG. 18 and FIG.

  In this case, a lever-shaped swing rod 78 is pivotally supported by the leftover filter 25, and a pivot shaft 80 pivotally supported by a bearing 79 is provided at the upper end of the swing rod 78. Is provided. The rotating shaft 80 is driven to rotate by a motor 81 acting as a driving means. That is, the swing rod 78 is swung upward by the rotation of the rotation shaft 80 as the motor 81 is driven, and the leftover filter 25 is retracted above the normal water level Y as shown by the dotted line. -ing Further, a cover member 82 is provided to cover the upper part of the leftover filter 25 in the retracted state. The cover member 82 has a function of preventing the rinse water W ′ sprayed into the cleaning chamber 3 from being applied to the remnant leftover filter 25. Further, the rotating shaft 80 is supported by a filter storage tray 84 that can be freely inserted into and removed from an outlet 83 formed immediately below the door 2 on the front surface side of the main body case 1. Moreover, the rotating shaft 80 is configured to be detachable from the motor 81 and the bearing 79 in the retracted state of the leftover filter 25. That is, the leftover filter 25 in the retracted state can be taken in and out with respect to the outlet 83 together with the filter storage tray 84.

With the above configuration, in the cleaning process, as shown by the solid line in FIG. 18, the leftover filter 25 is disposed at a predetermined position (that is, the outlet side of the water storage unit 19). Circulates in the cleaning water circulation path L ₁ including the cleaning pump 16, the rotary spray nozzles 8, 9, 10, the cleaning chamber 3, the water storage unit 19, and the leftover filter 25. When the cleaning process is completed, the motor 81 is driven, and the leftover filter 25 is retreated above the normal water level Y as shown by the dotted line in FIG. At this time, the rinsing water W ′ circulates in the rinsing water circulation path L ₂ including the cleaning pump 16, the rotary injection nozzles 8, 9, 10, the cleaning chamber 3 and the water storage unit 19. The rinse water circulation path L _2, Zan'na filter 25 is not present. When the filter storage tray 84 is pulled out together with the leftover filter 25 after the operation of the dishwasher is finished, the leftover Z collected in the leftover filter 25 can be easily processed.

  In this way, the rinsing water W ′ does not come into contact with the leftovers Z, which makes it very hygienic. Since the leftovers Z can be processed without opening the door 2, the maintenance becomes easy.

  Since other configurations and operational effects are the same as those in the first embodiment, the description thereof is omitted.

It is a longitudinal cross-sectional view of the dishwasher concerning 1st Embodiment of this invention. It is sectional drawing which shows the washing | cleaning room side part in the dishwasher concerning 1st Embodiment of this invention. It is the cross-sectional top view which excised part of the dishwasher concerning 1st Embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is an expanded sectional view of the channel | path switching mechanism part in the dishwasher concerning 1st Embodiment of this invention, (A) shows the state at the time of washing water circulation path formation, (B) is at the time of rinse water circulation path formation Indicates the state. It is an expanded sectional view at the time of the washing-water circulation path formation of the channel | path switching mechanism part in the dishwasher concerning 2nd Embodiment of this invention. It is a cross-sectional top view at the time of the washing-water circulation path | route formation of the channel | path switching mechanism part in the dishwasher concerning 2nd Embodiment of this invention. It is an expanded sectional view at the time of the rinse water circulation path formation of the channel | path switching mechanism part in the dishwasher concerning 2nd Embodiment of this invention. It is a cross-sectional top view at the time of the rinse water circulation path | route formation of the channel | path switching mechanism part in the dishwasher concerning 2nd Embodiment of this invention. It is an expanded sectional view at the time of the washing-water circulation path formation of the channel | path switching mechanism part in the dishwasher concerning 3rd Embodiment of this invention. It is a cross-sectional top view at the time of the washing-water circulation path | route formation of the channel | path switching mechanism part in the dishwasher concerning 3rd Embodiment of this invention. It is an expanded sectional view at the time of the rinse water circulation path formation of the channel | path switching mechanism part in the dishwasher concerning 3rd Embodiment of this invention. It is a cross-sectional top view at the time of the rinse water circulation path | route formation of the channel | path switching mechanism part in the dishwasher concerning 3rd Embodiment of this invention. It is an expanded sectional view of the passage change mechanism part in the dishwasher concerning a 4th embodiment of the invention in this application. It is a longitudinal cross-sectional view which shows the modification of the dishwasher concerning 4th Embodiment of this invention. It is a top view of the washing room part in the modification of the dishwasher concerning 4th Embodiment of this invention. It is a longitudinal cross-sectional view of the dishwasher concerning 5th Embodiment of this invention. It is a longitudinal cross-sectional view which shows the principal part of the dishwasher concerning 6th Embodiment of this invention. It is a longitudinal cross-sectional view which shows the principal part of the dishwasher concerning 7th Embodiment of this invention. It is sectional drawing which shows the assembly | attachment state of the leftover filter and filter storage tray in the dishwasher concerning 7th Embodiment of this invention.

Explanation of symbols

1 is a main body case 3 is a washing room 25 is a leftover filter 36 is a passage switching mechanism 38 is a movable member 49 is a thermally responsive member (spring)
50 is a bias spring 53 is a rotating body 55 is a drive means 75 is a bypass passage 82 is a cover member L ₁ is a wash water circulation path L ₂ is a rinse water circulation path W is a wash water W 'is a rinse water Y is a water level Z is a leftover

Claims (9)

A main body case having a cleaning chamber for storing tableware, and a cleaning water circulation path through which cleaning water circulates in a cleaning step for cleaning the tableware stored in the cleaning chamber; A dishwasher provided with a leftover filter that collects leftovers separated from tableware in the process, wherein the tableware is rinsed with rinse water newly supplied after completion of the washing step. In the dishwasher, the rinsing water is configured to form a circulation path for rinsing water in which the rinsing water circulates without contacting with the leftovers collected in the leftover filter. The dishwasher according to claim 1, wherein the washing water circulation path and the rinse water circulation path are connected to each other through a passage switching mechanism that switches passages between the washing step and the rinsing step. The passage switching mechanism is constituted by a rotating body that communicates or closes the upstream side of the leftover filter in the washing water circulation path and closes or communicates the rinse water circulation path, and driving means that rotationally drives the rotation body. The dishwasher according to claim 2, wherein the dishwasher is provided. 3. The dishwasher according to claim 2, wherein the passage switching mechanism is configured to be switched by a thermally responsive member that operates when the temperature of the cleaning water in the cleaning step rises to a predetermined temperature. A spring made of a shape memory alloy is adopted as the thermally responsive member, and the movable member in the passage switching mechanism is operated by the spring and a bias spring that applies a biasing force in a direction against the biasing force. The dishwasher according to claim 4, wherein 2. The dishwasher according to claim 1, wherein the rinse water circulation path is formed by discharging the leftovers collected on the leftover filter after the end of the washing process from a discharge port. 7. The dishwasher according to claim 6, wherein a bypass passage is branched from the washing water circulation path to reach the discharge port, and the leftovers are discharged through the bypass passage. 2. The dishwasher according to claim 1, wherein the rinse water circulation path is formed by retracting the leftover filter from the wash water circulation path after the completion of the washing process. 9. The dishwasher according to claim 8, wherein the leftover filter is evacuated by moving the rinsing water upward from the water level, and a cover member is provided to cover the upper part of the evacuated leftover filter.

Images