JP2005334017A - Dishwasher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dishwasher capable of being miniaturized and made light in weight, effectively utilizing space inside a case body and reducing costs by providing a water tank integrally and separately with a washing tub inside the case body. <P>SOLUTION: The dishwasher comprises the washing tub 5 provided inside the case body 1, a dish basket 36 housed inside the washing tub 5 for housing dishes 37, a jetting nozzle 31 for jetting washing water inside the washing tub 5 to the dishes 37, a washing pump 25 for supplying the washing water to the jetting nozzle 31, and a water discharge pump for discharging the washing water inside the washing tub 5 to the outside of the case body by a water discharge path. The dishwasher is provided with the water tank 14 formed integrally and separately with the washing tub 5 inside the case body 1 to be supplied with water from the outside of the case body through a water supply means 33, a heating means 19 installed inside the water tank 14 for heating the water inside the water tank 14, and a water supply pump 21 for supplying hot water inside the water tank 14 to the washing tub 5. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a dishwasher, and more particularly to a dishwasher provided with a water storage tank separated from a washing tank in a housing.

  In a conventional dishwasher, heating means incorporating a heating element is provided outside the washing tank, and in the washing process, washing water is supplied from outside the machine body to the washing tank, and the predetermined water level is detected by the water level detection means. At the same time when the water supply is stopped and the cleaning water is supplied to the cleaning nozzle by the cleaning pump, it is supplied to the heating means outside the cleaning tank via the first circulation water channel and the cleaning water supply port, and is provided in the heating means. The cleaning water is heated by energizing the heating element. The heated washing water is supplied from the heating means to the washing tank via the second circulation channel, and the washing water is heated to the washing predetermined temperature by repeating this. Then, in the drying process, the ventilation fan is operated, air outside the apparatus is sent to the heating means through the outside air supply port, and the heating element heats the sent air. The heated air is supplied to the washing tank through the second circulation channel, and the washed dishes are dried and discharged outside the apparatus. Therefore, the heating means can heat the cleaning water to the predetermined cleaning temperature and supply it to the cleaning tank in the cleaning process, and can heat the outside air to the predetermined drying temperature and supply it to the cleaning tank in the drying process. There are some (see, for example, Patent Document 1).

  In addition, there is a water supply tank that can be pulled out at the lower part of the dishwasher main body, and water can be supplied in a state where the water supply tank is pulled out from the dishwasher main body. Thereby, it is not necessary to secure a place dedicated to the water supply tank, and it is not necessary to carry a heavy water supply tank containing water (see, for example, Patent Document 2).

Japanese Patent No. 3407408 (page 4-5, FIG. 1) JP 2003-180596 A (page 3-4, FIG. 1)

  Although the tableware washing machine of patent document 1 is provided with a heating means outside a washing tank, since it is arrange | positioned in the circulation path of washing water and the washing water mixed with the residue passes through the heating means, the residue However, there is a problem that stagnation occurs in the heating means and the like is contaminated, or a strange odor or smoke is generated when heated during drying.

  The dishwasher of Patent Document 2 is provided with a water storage tank provided with heating means in the lower part of the dishwasher separated from the circulation path of the wash water. The cleaning pump, drainage pump, and these pipes and wiring are provided, and there is a recess where the water storage tank is installed, so the main body becomes large (especially the height increases) and the weight increases. In addition to this, there is a problem that the position of the cleaning tank becomes high and the usability is poor and the installation place is limited.

In addition, since the bottom plate of the cleaning chamber and the top plate of the recess that accommodates the water storage tank are required, the number of parts increases and the cost increases.
Furthermore, water supply is troublesome because the water storage tank has to be drawn out from the recess, and when the water tank opening and water tap are connected with a hose, the hose becomes an obstacle. There was a problem.

The present invention has been made to solve the above problems, and by providing a water storage tank integrally and separately from the cleaning tank in the housing, the size and weight can be reduced, and the space in the housing can be effectively used. It is an object of the present invention to provide an easy-to-use dishwasher that can be used in the future and can reduce costs.
Another object of the present invention is to provide a dishwasher that can easily and reliably drain the overflowed water from the water storage tank and that can easily supply water to the water storage tank. It is.

  A dishwasher according to the present invention includes a washing tank provided in a housing, a dish basket accommodated in the washing tank and containing dishes, and an injection nozzle that injects washing water in the washing tank into the dishes. A cleaning pump that supplies cleaning water to the spray nozzle, and a drainage pump that discharges the cleaning water in the cleaning tank to the outside of the casing through a drainage channel, and is formed integrally and separately from the cleaning tank in the casing. , A water storage tank that is supplied with water from outside the housing via a water supply means, a heating means that is installed in the water storage tank and heats the water in the water storage tank, and hot water in the water storage tank is supplied to the washing tank A water supply pump is provided.

In the dishwasher according to the present invention, the water storage tank is provided integrally and separately in the lower part of the cleaning tank in the casing, and the heating means and the like of the cleaning water are separated from the circulation path of the cleaning water. In addition, since no residue is attached to the heating means, no odor or smoke is generated during the drying process.
In addition, since the dishwasher can be reduced in size and weight, it is easy to use, the degree of freedom of installation location can be expanded, and the cost can be reduced by reducing the number of parts.
In addition, since the water supply to the water storage tank is simple, an easy-to-use dishwasher can be obtained.

FIG. 1 is a longitudinal sectional view of the front side of a dishwasher according to an embodiment of the present invention, FIG. 2 is a longitudinal sectional view of the rear side of FIG. 1, and FIG. 3 is a washing tank of FIG. 4) is a perspective view of the water storage tank, and FIG. 4 is an exploded perspective view of FIG.
A cleaning tank 5 is provided in a housing 1 that forms the outer shell of the dishwasher, and a bottom plate 10 having a water storage tank 14 is detachably attached to the lower part of the cleaning tank 5.

  As shown in FIGS. 3 and 4, the cleaning tank 5 includes a plane substantially U-shaped cleaning tank side surface 6 having an open front and top and bottom, and an upper surface plate 7 that covers the upper opening of the cleaning tank side surface 6. And a bottom plate 10 that covers the lower opening, and a fitting groove 8 that opens downward and engages with the upper end of the cleaning tank side surface 6 at both side edges and the rear edge of the top plate 7. Is formed.

  The bottom plate 10 has a shape slightly larger than the outer shape of the side surface portion 6 of the cleaning tank in which an opening 11 is formed on one side and a water storage tank 12 is provided below the opening 11, and a peripheral wall 13 is erected on the outer periphery. . The water storage tank 12 has a capacity sufficient to store water necessary for washing or rinsing tableware described later. 14 is a concave cleaning tank water reservoir provided on the other side of the bottom plate 10, 15 is a cleaning water feed port provided in the substantially central portion of the bottom plate 10, and 16 is provided on the upper side wall of the water storage tank 12. It is a water inlet. Reference numeral 17 denotes a partition plate that covers and fixes the opening 11 of the water storage tank 12 through packing (not shown). In addition, 18 is a heating means for washing water installed in the water storage tank 12, and 19 is a temperature sensor provided at the bottom of the water storage tank 12 (see FIG. 1).

  1 and 2 again, 21 is a water supply pump provided on the side of the water storage tank 12 below the washing tank 5, and its suction port is connected to the bottom of the water storage tank 12 by a water supply pipe 22a. The discharge port is connected to the water supply pipe 22b. The water supply pipe 22 b rises from the vicinity of the bottom of the housing 1 along the inner wall of the housing 1, and is connected to a water supply port 23 provided at a substantially central portion in the vertical direction of the cleaning tank side surface portion 6.

  Reference numeral 25 denotes a cleaning pump installed on the side of the water storage tank 12 below the cleaning tank 5, and its suction port is connected to the bottom of the cleaning water reservoir 14 provided on the bottom plate 10 by a water supply pipe 26a. Is connected to the washing water feed port 15 provided in the bottom plate 10 by a water supply pipe 26b.

  27 is a drainage pump installed in the vicinity of the cleaning pump 25, and its suction port is connected to the bottom of the cleaning tank reservoir 14 by a drainage pipe 28a, and the drainage pipe 28b connected to the discharge port is connected to the inner wall of the housing 1. After rising along, it descends again and is connected to a connecting portion 29 provided below the cleaning tank 5. Reference numeral 28 c denotes a drain pipe having one end connected to the connection portion 29 and the other end taken out of the housing 1. Reference numeral 30 denotes an overflow pipe having one end connected to the upper portion of the rear wall of the water storage tank 12 and the other end connected to the connection portion 29.

31 has a plurality of injection ports (not shown), and is an injection nozzle that is rotatably mounted on the cleaning water supply port 15 provided on the bottom plate 10, and 32 is a filter that is detachably provided on the cleaning tank water storage unit 14. It is.
34 is a guide tube provided between the water supply port 16 of the water storage tank 12 and the side wall of the housing 1, and 35 is provided on the guide tube 34 on the outer surface side of the side wall of the housing 1 and is inserted into the guide tube 34. It is a water receiver fixing | fixed part which fixes the connecting pipe 42 of the water receiver 40 mentioned later.

A dish basket 36 is accommodated in the washing tank 5 so that it can be taken in and out of the cleaning tank 5 along the rail 9 provided at the lower part of the inner wall of the washing tank 5, and 37 is a dish dish accommodated in the dish basket 36 for cleaning. It is.
Reference numeral 40 denotes a substantially bowl-shaped water receptacle that is a means for supplying water to the water storage tank 12, and is provided integrally with the funnel-shaped receptacle 41 and the receptacle 41, and is inserted into the guide tube 34 so that it can be pulled out and inserted into the tip portion. Consists of a connecting pipe 42 that opens into the water storage tank 12. Although not shown, a hot air blower for drying the washed dishes 37 is provided below the back side of the washing tank 5, and an opening / closing valve whose suction port is normally closed by a blower pipe Is connected to the upper part of the side wall of the water storage tank 12, and the discharge port is opened to the rear wall of the cleaning tank 5 by a blower pipe. A control unit is provided below the cleaning tank 5, and an operation unit is provided on the front side of the housing 1.

Next, an example of an assembly procedure for the dishwasher configured as described above will be briefly described.
First, the partition plate 17 is placed on the opening 11 of the bottom plate 10 provided with the heating means 18 and the temperature sensor 19 in the water storage tank 12 via a packing (not shown) to cover the opening 11. The bottom plate 10 is screwed and fixed, and the spray nozzle 31 is rotatably attached to the cleaning water feed port 15. Next, the lower end portion of the cleaning tank side surface portion 6 is inserted into the inside of the peripheral wall 13 of the bottom plate 10 via a packing (not shown), and fixed by screwing. Next, the fitting groove 8 of the upper surface plate 7 is fitted to the upper end portion of the cleaning tank side surface portion 6 through packing (not shown) and fixed with screws or the like.

  On the other hand, a water supply pump 21, a cleaning pump 25, a drainage pump 27, a hot air blower, and the like are installed at predetermined positions below the cleaning tank 5, and necessary piping and wiring are performed. Then, the assembled washing tank 5 and water storage tank 12 are inserted into the housing 1 from the front opening and set at a predetermined position. After fixing to the housing 1, the remaining piping and wiring are performed. Finally, a front door (not shown) is attached to the front opening of the housing 1 so as to be opened and closed. The spray nozzle 31 may be attached to the cleaning water feed port 15 after the cleaning tank 5 is mounted in the housing 1. The above assembly procedure shows an example, and can be changed as appropriate.

Next, the effect | action which wash | cleans the tableware 37 with the dishwasher which concerns on this invention is demonstrated.
First, the tableware 37 to be cleaned is stored in the tableware basket 36, the front door is opened, the tableware basket 36 is stored in the cleaning tank 5 along the rail 9, and the front door is closed.

Next, the water receptacle 40 is inserted into the guide tube 34, and the receptacle 41 is positioned under the faucet of a water tap with a solenoid valve such as a sink. At this time, the connection pipe 42 of the water receiver 40 is pushed into or pulled out of the guide pipe 34 to adjust the position of the receiving port 41 and fixed by the water receiver fixing portion 35.
Then, the water tap is opened to supply cleaning water to the water storage tank 12, and when a predetermined time has elapsed, the water tap is closed. If a predetermined amount (predetermined water level) or more of cleaning water is supplied to the water storage tank 12, the water is discharged from the drain pipe 28c to the outside through the connection pipe 29 from the overflow pipe 30. In this case, the drainage of the cleaning water in the cleaning tank 5 and the drainage of the overflowed water are combined in one drain pipe 28c without draining them in separate drain pipes, so that the number of parts and cost can be reduced. it can.
Next, the heating means 18 is energized to heat the cleaning water in the water storage tank 12 to a temperature suitable for cleaning. When the temperature sensor 19 detects that the cleaning water has been heated to a predetermined temperature, the energization is stopped. At this time, the on-off valve provided on the air duct of the hot air blower is closed.

Next, the water supply pump 21 is driven to supply hot water in the water storage tank 12 from the water supply port 23 to the cleaning tank 5 through the water supply pipes 22a and 22b, and the lower part of the cleaning tank 5 including the cleaning tank water storage unit 14 To store water. A detergent may be added to the washing water as necessary.
Next, the cleaning pump 25 is driven, hot water in the cleaning tank reservoir 14 is pumped to the injection nozzle 31, and hot water is supplied from the injection port to the dishes 37 stored in the tableware basket 36 while rotating the injection nozzle 31. Spraying and cleaning the dishes 37, the cleaning process is started.

The hot water that has washed the dishes 37 falls in the washing tank 5, gathers in the washing tank reservoir 14, is sent again to the spray nozzle 31 by the washing pump 25, and the dishes 37 are washed. The washing water circulates in this way, and the washing of the dishes 37 is repeated.
At this time, residue is mixed into the circulating cleaning water, but most of the residue is collected by the filter 32. Further, since the water storage tank 12 is separated from the circulation path of the washing water, only water from the outside always passes through the water storage tank 12, the heating means 18 and the temperature sensor 19, so that there is no contamination due to residue and it is always clean. Can keep.

On the other hand, when the cleaning process is started, cleaning water is supplied to the water storage tank 12 in parallel with this, and the water is stored and heated to a temperature suitable for rinsing.
When the predetermined time has elapsed, the cleaning pump 25 is stopped and the drainage pump 27 is driven to drain the cleaning water in the cleaning tank 5. This completes the cleaning process.

  Next, the water supply pump 21 is driven to supply hot water in the water storage tank 12 to the cleaning tank 5, and then the cleaning pump 25 is driven to inject hot water from the injection nozzle 31 to the dishes 37 to start the rinsing process. . At the same time, water is supplied to the water storage tank 12 and heated. When a certain time has elapsed, the cleaning pump 25 is stopped, the hot water in the cleaning tank 5 is drained by the drain pump 27, the hot water in the water storage tank 12 is supplied into the cleaning tank 5, and the cleaning pump 25 is again supplied. To drive the tableware 37. Such a rinsing process is repeated several times.

When the rinsing process is finished after a predetermined time has elapsed, the heating means 18 is energized and the hot air blower is energized. When the hot air blower is driven, the on-off valve is opened for suction, and outside air is sucked into the water storage tank 12 from the intake port 16 and heated by the heating means 18 to be sucked into the washing tank 5 as hot air. The washed dishes 37 are dried (drying process).
A series of operations of the water supply and heating to the water storage tank 12, the cleaning process, the rinsing process, and the drying process are automatically performed by setting in the operation unit.
When a predetermined time has elapsed and the drying process is completed, the front door is opened as appropriate, the tableware basket 36 is pulled out, and the cleaned tableware 37 is taken out.

In the above description, the case where the present invention is implemented in the illustrated dishwasher is shown, but the present invention can also be implemented in dishwashers having other structures.
Although the case where the water storage tank 12 is formed integrally with the bottom plate 10 is shown, a water storage tank is formed separately from the bottom plate 10 and is screwed so that the opening 11 is closed on the bottom surface of the bottom plate 10. It may be attached by other means, or various modifications such as forming the bottom plate 10 having the opening 11 integrally with the cleaning tank side face 6 and attaching a water storage tank formed separately below the opening 11. Can do.

Furthermore, although the case where the water supply port 16 in which the water receptacle 40 is detachably mounted on one side wall of the water storage tank 12 is shown, the water supply port 16 may be provided on the other side wall or the rear wall of the water storage tank 12. Alternatively, it may be provided on both side walls and the rear wall. Then, the water supply port 16 may be selected according to the installation position of the dishwasher or the position of the water tap, and the water receiver 40 may be attached to supply water. In this case, the unused water supply port may be used by a cap or the like. Block.
Moreover, although the connection pipe 42 of the water receptacle 40 was pushed or pulled out to the guide pipe 34 according to the position of the faucet of the water tap, the case where the distance between the side wall of the housing 1 and the receptacle 41 was adjusted was shown. The tube 42 may be configured to be extendable and retractable by using a double tube structure.

In the dishwasher according to the present invention, the water storage tank 12 is provided separately from the cleaning tank 5 in the housing 1, and the cleaning water heating means 18 and the temperature sensor 20 are separated from the circulation path of the cleaning water. There is no inconvenience due to contamination by residues contained in water, and no odor or smoke is generated by residues attached to the heating means 18 during the drying process.
Moreover, since the water used for the next operation can be heated and prepared during the rinsing process and the rinsing process, the operation time can be shortened, which is convenient.

  In addition, the water storage tank 12 is integrated with the washing tank 5 in the housing 1, and the dishwasher is miniaturized by installing a water supply pump 21, a washing pump 25, a drainage pump 27, etc. on its side, so that the installation is free. The degree can be expanded.

Further, the cleaning tank 5 and the water storage tank 12 are integrated via the bottom plate 10, and the opening 11 of the water storage tank 12 is closed by a partition plate 17 that also serves as the bottom plate of the cleaning tank 5 and the cover of the water storage tank 12. Since the number of parts is reduced, not only can the cost be reduced by reducing the number of parts, but also the weight of the dishwasher can be reduced.
Further, when water is supplied to the water storage tank 12, the water tank 40 can be moved or the water tank 12 and the faucet faucet can be connected with a hose by using a water receiving device 40 which is a water supply means. Since it is not, it is convenient and convenient.

It is a longitudinal cross-sectional view of the front side of the dishwasher which concerns on one embodiment of this invention. It is a longitudinal cross-sectional view of the back side of FIG. It is a perspective view of the washing tank (the upper surface board is omitted) and the water storage tank of FIG. FIG. 4 is an exploded perspective view of FIG. 3.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Case, 5 Washing tank, 10 Bottom plate, 11 Opening part, 12 Water storage tank, 14 Washing tank water storage part, 15 Washing water feed port, 16 Water feed port, 17 Partition plate, 18 Heating means, 19 Temperature sensor, 21 Water feed Pump, 23 Water supply port, 25 Washing pump, 27 Drainage pump, 28c Drainage pipe, 29 Connection part, 30 Overflow pipe, 31 Injection nozzle, 36 Tableware basket, 37 Tableware, 40 Water receptacle as water supply means.

Claims (5)

A cleaning tank provided in the housing, a dish basket accommodated in the cleaning tank and storing dishes, a spray nozzle for spraying cleaning water in the cleaning tank to the dishes, and supplying cleaning water to the spray nozzle A drainage pump for discharging the flushing water in the washing tank to the outside of the housing through a drainage channel,
A water tank formed integrally with and separated from the washing tank in the housing and supplied with water from outside the housing via water supply means, and heating for heating the water in the water storage tank installed in the water storage tank A dishwasher comprising means and a water supply pump for supplying hot water in the water storage tank to the washing tank.   2. The dishwasher according to claim 1, wherein the water storage tank is integrally provided at a lower portion of a bottom plate of the washing tank, and an upper surface opening is closed by a partition plate.   3. The dishwasher according to claim 1, wherein an overflow pipe is provided in the water storage tank, and when the supplied water exceeds a predetermined amount, the water is discharged from the overflow pipe to the outside of the casing through the drainage channel. .   The dishwasher according to any one of claims 1 to 3, wherein the water supply means is detachably attached to any one of one or a plurality of water supply ports provided in the water supply tank. . The said water supply means was comprised so that the distance between a housing | casing and a water supply port could be adjusted by pushing in or pulling out to the said water supply port, or forming it so that expansion and contraction was possible. A dishwasher according to any of the above.

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