JP2010187796A5 - - Google Patents

Description

dishwasher

  The present invention relates to a dishwasher in which a rib is provided on an upper surface of a guide plate for sending outside air to a mixing unit, and liquid on the upper surface is returned to a washing tank via the rib.

As shown in FIG. 4, the conventional dishwasher is provided with an air volume distribution means 104 that changes the distribution ratio of the outside air blown by the blower 101 into the outside air passage 102 and the washing tank inside air passage 103. Is provided with a damper whose opening degree is changed by the wind pressure of the blower 101 in the cleaning tank internal air passage 103 (see, for example, Patent Document 1).
Japanese Patent No. 4013994

  However, in the configuration of the conventional dishwasher, the washing water sprayed from the washing means jumps out to the mixing unit that mixes the exhaust from the washing tank and the outside air from the blowing unit, and the blowing unit passes through the mixing unit. Moisture adheres to the blowing means. Or the water | moisture content condensed on the mixing part by mixing with the exhaust_gas | exhaustion from a washing tank and the external air from a ventilation means flows into a ventilation means, and a water | moisture content adheres to a ventilation means. And it had the subject that water | moisture content adhering to a ventilation means may cause a failure of a ventilation means. As a solution to this, a sufficient distance between the cleaning tank outlet and the mixing unit connected to the mixing unit is provided. Alternatively, there are measures such as providing a U-shaped obstacle to water ingress between the washing tank outlet and the mixing section, but in this case, it will hinder compactness of the fuselage or increase the pressure loss of the exhaust path Another problem occurs.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems without causing these problems, and an object of the present invention is to provide a dishwasher that is less likely to break down by preventing liquid from adhering to the blowing means.

In order to solve the above-mentioned conventional problems, the dishwasher of the present invention includes a washing tank for storing an object to be cleaned, a cleaning means for injecting cleaning water to the object to be cleaned, and heating for heating the cleaning water in the cleaning tank. Means, an exhaust port for discharging the air in the cleaning tank, an air supply means for supplying outside air into the cleaning tank, a first path for communicating the air blowing means and the cleaning tank, and an exhaust port and the cleaning tank in communication A second path that branches from the first path and connects to the second path, and a mixing unit that mixes the outside air sent from the blower and the air discharged from the cleaning tank A guide plate for mixing the air discharged from the cleaning tank and the outside air sent from the air blowing means, the guide plate being provided substantially horizontally and having ribs on the surface thereof, the upper surface of the guide plate being The liquid returns to the cleaning tank through the rib.

  In the dishwasher according to the present invention, the washing water sprayed from the washing means jumps out to the mixing unit that mixes the exhaust from the washing tank and the outside air from the blowing means, or from the exhaust and the blowing means from the inside. Even if the liquid condensed in the mixing section by mixing with the outside air accumulates on the upper surface of the guide plate connected to the air blowing means, the liquid returns to the cleaning tank through the rib provided on the guide plate, so that the liquid It can prevent flowing into the blowing means. As a result, it is possible to suppress the failure of the blowing means due to the adhesion of the liquid.

1st invention discharges the air in a washing tank which stores a to-be-washed object, a cleaning means to inject washing water to a to-be-washed object, a heating means to heat washing water in a washing tank An exhaust port, an air supply means for supplying outside air into the cleaning tank, a first path communicating the air blowing means and the cleaning tank, a second path communicating the exhaust port and the cleaning tank, and a first path A third path that branches off and connects to the second path, a mixing unit that mixes the outside air sent from the blowing means and the air discharged from the cleaning tank, and the air and the air discharged from the cleaning tank Provided with a guide plate for reliably mixing the outside air sent from the means, and the guide plate for sending outside air to the mixing portion is provided substantially horizontally and has a rib, and the liquid on the upper surface of the guide plate is provided with the rib. The cleaning water sprayed from the cleaning means is returned from the cleaning tank by returning to the cleaning tank. The guide plate connected to the blower means that the liquid that has jumped out to the mixing part that mixes the air and the outside air from the blowing means, or has condensed in the mixing part due to the mixture of the exhaust from the interior and the outside air from the blowing means Even if it accumulates on the upper surface, the liquid returns to the cleaning tank through the rib provided on the guide plate, so that the failure of the blowing means due to the adhesion of the liquid can be suppressed.

  In a second aspect based on the first aspect, the guide plate is provided to extend from the partition wall separating the first path and the second path toward the mixing portion, and is provided on the guide plate. Since the rib is provided in a substantially U-shape so as to surround the extended end, the liquid accumulated on the upper surface of the guide plate passes through the substantially U-shaped rib from the guide plate. Since it moves to the inner wall of a path | route and can finally be returned in a washing tank, the failure by adhesion of the liquid of a ventilation means can be suppressed more reliably.

  According to a third invention, in the second invention, the plurality of ribs are provided in the guide plate in a substantially U shape so as to surround the end of the guide plate, so that the guide is more reliably guided than in the second invention. Since the liquid accumulated on the upper surface of the plate can be returned to the cleaning tank, it is possible to further suppress the failure due to the liquid adhering to the blowing means.

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

(Embodiment 1)
FIG. 1 is a sectional view showing the structure of the dishwasher according to the first embodiment of the present invention. 2 is a cross-sectional view of the main part of the dishwasher in FIG. FIG. 3 is a perspective view of a main part of the dishwasher in FIG .

  In FIG. 1, a cleaning means 4 having a cleaning nozzle 2 for jetting cleaning water to the object to be cleaned and a cleaning pump 3 for pressurizing the cleaning water at the bottom of the cleaning tank 1 for storing the object to be cleaned such as tableware, A heater 5 is disposed as a heating means for heating the cleaning water to raise the temperature. Further, a fan 6 as a blowing means is provided at the bottom of the outer wall of the cleaning tank 1, and the outside air is blown into the cleaning tank 1 in order to discharge the air in the cleaning tank 1 and dry the cleaning tank 1. Further, an exhaust port 7 for discharging air in the washing tank 1 is provided at the upper front of the dishwasher, an inflow port 8 through which outside air flows is provided below the front of the washing tank 1, and a washing tank is provided above the front of the inner wall of the washing tank. An outlet 9 for discharging the air in 1 is provided. Further, a control means (not shown) for controlling each of the cleaning process, the rinsing process, and the drying process is provided on the front outer wall of the cleaning tank.

First path 10 communicating between the fan 6 and the cleaning tank 1, a screw with a welding or seal packing due to vibration or the like, to seal to prevent water leakage and is fixed to the front outer wall of the cleaning tank 1, the The outside air is supplied from the fan 6 to the cleaning tank 1 through the first path 10. Further, the air in the cleaning tank 1 is exhausted to the exhaust port 7 through the second path 11 that connects the exhaust port 7 and the outflow port 9. Similarly to the first path 11, the second path 11 is sealed and fixed to the front wall surface of the cleaning tank 1 with screws by using vibration or the like or seal packing so as not to leak water. Further, a third path 12 branched from the first path 10 and connected to the second path 11 is provided on the front surface of the cleaning tank 1 in a substantially vertical direction, and outside air is supplied from the fan 6 to the second path 11. ing. Similarly to the first path 10 and the second path 11, the third path 12 is also welded or screwed by vibration or the like, so that the first path 10 and the second path 11 or the cleaning tank 1 It is fixed to the front outer wall. Moreover, the air exhausted from the inside of the cleaning tank and the outside air are mixed in the mixing section 13 to which the third path 12 is connected in the second path 11. Here, in order to completely mix the outside air sent from the third path 12 and the exhaust from the cleaning tank 1, it is desirable to take the distance from the mixing unit 13 to the exhaust port 7 as long as possible.

An inclined portion 14 is provided in the second path 11 so that the cleaning water sprayed from the cleaning means 4 returns to the cleaning tank again when it jumps out from the cleaning tank 1 to the second path 11. Further, in order to reduce the amount of noise generated in the cleaning tank through the second path 12 and leaking from the exhaust port 7, a rib (partition wall) 15 is provided on the front wall surface of the cleaning tank 1, and the second Is substantially S-shaped. The mixing section 13 to which the third path 12 is connected in the second path 11 is provided above the rib (partition wall) 15, and the cleaning water that has jumped out of the cleaning tank 1 adheres to the mixing section 13, and 3 is considered not to flow into the third path 12. Further, the mixing plate 13 is provided with a guide plate 16 that is substantially horizontal in order to mix the air exhausted from the cleaning tank 1 and the outside air sent from the blowing means through the second path 11 without loss. Is provided. Further, a rib 17 is installed on the surface of the guide plate in a substantially U-shape at the end (tip) of the guide plate 16 in the same direction as the blowing direction. In addition, the cleaning tank 1 is connected to a water supply pipe 19 having a water supply valve 18 for supplying cleaning water and a drain pipe 21 having a drain valve 20 for draining the cleaning water, and can be pulled out from the housing 22. It is stored in a slide body 23 that can be used. The slide body 23 is provided with a vent hole 25 communicating with the outside.

  About the dishwasher comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

First, the slide body 23 is pulled out from the housing 22 to store the tableware, which is the object to be cleaned, in the cleaning tank 1, and the slide body 23 is returned to its original state to start cleaning. When the cleaning process is started, the water supply valve 18 is opened to supply water to the cleaning tank 1 from the water supply pipe 19. When a predetermined amount of water is supplied, the water supply valve 18 is closed and the water supply is stopped. The operation of the cleaning pump 3 causes hot water to be ejected from the cleaning nozzle 2 and sprayed onto the dishes to be cleaned. The cleaning nozzle 2 is rotated by the reaction force of the cleaning water jetting, so that the cleaning water is spread over the object to be cleaned, thereby improving the cleaning performance.

  In the cleaning process, the heater 6 heats the cleaning water, so that the fan 6 operates when the temperature of the air in the cleaning tank reaches a certain temperature, for example, about 50 ° C. at which condensation is likely to occur at the exhaust port. As a result, the cleaning water heated by the heater 5 heats the air in the cleaning tank, so that hot and humid air is discharged from the cleaning tank outlet 9. This high-temperature and high-humidity air is mixed with the outside air sent from the fan 6 through the third path 12 in the mixing unit 13, becomes air with reduced temperature and humidity, and is discharged from the exhaust port 7.

  In the cleaning process, the heater 5 is operated and cleaned with warm water. However, if the object to be cleaned is less contaminated, the heater 5 may be cleaned without operating the water supply temperature. If there is a lot of oil or if oil stains are stuck on the tableware, etc., wash with detergent. Even in this case, the fan 6 is intermittently operated if the internal temperature becomes a constant temperature. When the cleaning process is completed, the drain valve 20 is opened, and the cleaning water is drained from the drain pipe 21 to the outside of the housing 22, and when draining is completed, the drain valve 20 is closed.

  In the next rinsing process, without supplying detergent, water is supplied in the same manner as in the cleaning process, and by operating the heater 5 and the cleaning pump 3, hot water is ejected from the cleaning nozzle 2 and sprayed on the tableware that is the object to be cleaned. Let Also in the rinsing process, after detecting a certain temperature, the fan 6 is intermittently operated to mix the hot and humid cleaning tank air and the outside air, and the air discharged from the exhaust port 7. Reduce temperature and humidity.

  In order to efficiently dry the object to be cleaned in a short time after the rinsing operation, it is preferable to warm the object to be cleaned in the final rinsing operation. Therefore, the final rinsing operation is performed with high-temperature water of about 60 ° C. to 70 ° C., and can be sterilized. After the rinsing operation is completed, the rinsing water in the cleaning tank 1 is drained in the same manner as at the end of the cleaning operation.

  During the washing operation and the rinsing operation, the washing water ejected from the washing nozzle 2 reaches every corner of the washing tank, so that a part of the washing water jumps out from the outlet 9 above the front surface of the inner wall of the washing tank 1, Intrudes into the path 11. The intruding cleaning water hits the inner wall of the second path 11 and scatters around. The scattered washing water accumulates on a substantially horizontal guide plate 16 provided in the mixing unit 11.

  Further, the high-temperature steam generated in the cleaning tank expands as the temperature in the cleaning tank rises, and passes through the second path 11 to try to discharge from the exhaust port 7 to the outside. Therefore, condensation occurs on the inner wall of the second path 11. In particular, the mixing unit 13 mixes high-temperature and high-humidity exhaust gas with low-temperature outside air, so that a large amount of dew condensation occurs. Condensed water is also formed on the substantially horizontal guide plate 16 provided in the mixing unit 13. Stored.

  Moisture stored on the guide plate due to these two phenomena eventually reaches a critical amount and flows down. At this time, the stored moisture is invited to the ribs by the rib 17 installed on the guide plate 16 and flows down to the inside of the warehouse.

  In the drying operation to be performed next, similarly to the cleaning operation and the rinsing operation, the high-temperature and high-humidity cleaning tank air is mixed with the outside air, and the temperature and humidity of the air discharged from the exhaust port 7 are reduced.

  As a result, during the cleaning operation and the rinsing operation, which has been a conventional problem, the cleaning water that has jumped out of the cleaning tank or the dew condensation water generated by high-temperature steam in the cleaning tank enters the third path 12. The risk of failure of the blowing means due to adhering to the blowing means is solved.

As described above, the dishwasher according to the present invention is configured such that the washing water jumps out of the washing tank during the washing operation or the dew condensation due to the mixing of the hot and humid exhaust and the low temperature outside air to the mixing unit. By preventing the liquid from entering the path for blowing outside air, it is possible to prevent the liquid from adhering to the blowing means that causes the failure of the blowing means by a simple and compact configuration. It is useful as a household and commercial dishwasher with a reliable low temperature exhaust configuration.

The longitudinal cross-sectional view of the dishwasher of Embodiment 1 of this invention Cross section of the main part of the dishwasher Perspective view of the main part of the dishwasher Vertical section of a conventional dishwasher

1 Washing tank 4 Cleaning means
5 Heating means (heater)
6 Air blowing means (fan)
7 Exhaust port 10 1st path | route 11 2nd path | route 12 3rd path | route 14 Inclined part 15 Rib (partition wall)
16 Information board
17 Ribs