JP4093276B2 - dishwasher - Google Patents

Description

  The present invention relates to a dishwasher for cleaning and drying dishes and the like.

  Conventionally, this type of dishwasher has been configured as shown in FIG. 4 (see, for example, Patent Document 1). Hereinafter, the configuration will be described.

  As shown in FIG. 4, the washing tub 2 provided in the dishwasher main body 1 housed in the system kitchen has an opening 3 on the upper side, and a table basket 5 that houses the tableware 4 is disposed. A cleaning nozzle 6 is rotatably provided below the tableware basket 5, and the cleaning water stored in the cleaning tank 2 is circulated by the pump 7 and sprayed from the cleaning nozzle 6 to clean the tableware 4.

  Further, an exhaust port 9 is provided in the upper part of the front panel 8 provided in front of the cleaning tank 2, and the air in the cleaning tank 2 is blown by the blowing means 10 via the exhaust path 11 to the exhaust port 9. Drain the tableware 4 further by discharging it outside the machine.

A first rail 12 is fixed below the washing tub 2, and the first rail 12 is supported by a second rail 13 fixed to the dishwasher body 1 so as to be movable in the front-rear direction. . When the tableware 4 is put in and out, the handle 14 provided on the front panel 8 is grasped, the washing tank 2 is pulled forward, and the tableware 4 is accommodated from the upper opening 3. Next, when the washing tub 2 is returned to the dishwasher body 1 and the operation is started, the washing water is heated from the washing nozzle 6 toward the tableware 4 while the washing water is heated by the heater 15 disposed at the bottom of the washing tub 2. A cleaning process is performed to spray and clean the dishes 4. Then, after rinsing the dishes 4, the drying process is performed and the operation is terminated.
JP 2001-046301 A

  However, in the configuration of such a conventional dishwasher, it is necessary to arrange the exhaust port 9 in front of the washing tub 2 in order to discharge the air in the washing tub 2 in a state of being housed in the system kitchen. Further, the air in the cleaning tank 2 discharged from the exhaust port 9 is substantially the same as the temperature in the cleaning tank 2 (about 80 ° C.), and there is a problem that there is a risk of burns in some cases.

  In order to solve this problem, a second air blowing unit made of electrical components or the like is arranged, the outside air is taken in by the second air blowing unit, the outside air and the air in the cleaning tank 2 discharged from the exhaust port 9 There is a method of lowering the temperature of the air discharged to the outside of the machine, but the condensed water generated when the air from the cleaning tank 2 and the outside air during the heating rinsing / drying process are mixed is the second air flow. If it enters the rotating part or charging part of the device and causes a failure due to an increase in the load of the rotating part and a fixed part of the rotating part, or the charged part rusts, the power supply becomes unstable, and operation becomes impossible. There were issues such as.

  The present invention solves the above-mentioned conventional problems, and prevents dew condensation water during the heating rinsing / drying process from entering the second air blowing means, so that there is little failure and it is discharged outside the machine. The object is to stably reduce the air temperature in the cleaning tank 2 and prevent burns of the user.

In order to solve the above-described conventional problems, a dishwasher according to the present invention has a dishwasher body having an opening at the front, and an exhaust port that is provided in the dishwasher body so as to be freely drawn out and exhausts air inside. A cleaning tank; first air blowing means for discharging air in the cleaning tank from the exhaust port; an opening for discharging air discharged from the exhaust port to the outside of the dishwasher body; the exhaust port; An exhaust path that communicates with the opening; and a second air blowing unit that sends outside air to the mixing chamber disposed in the middle of the exhaust path, and the air blowing port of the second air blowing unit is above the bottom surface of the mixing chamber Condensed water generated by mixing heated air and outside air discharged from the washing tank during the heating rinsing / drying process is concentrated on the bottom surface of the mixing chamber, so it is placed above the bottom surface of the mixing chamber. Of the second air blowing means Condensed water can be prevented from entering the chamber, there are few failures, and the high-temperature steam discharged from the exhaust port is cooled in the mixing chamber, so the temperature of the air when discharged outside the machine is stabilized. It can be reduced and burns of the user can be prevented.

  In the dishwasher of the present invention, the condensed water generated by mixing the heated air discharged from the washing tank and the outside air during the heating rinsing / drying process is concentrated on the bottom surface of the mixing chamber. Condensed water can be prevented from entering from the air outlet of the second air blower arranged, there is little failure, and the air discharged from the washing tank is cooled in the mixing chamber, so it is discharged outside the machine. Temperature can be stably reduced, and it is possible to prevent burns of the user.

According to a first aspect of the present invention, there is provided a dishwasher main body having an opening in the front, a washing tub provided so as to be freely drawn into the dishwasher main body and having an exhaust port for exhausting air therein, and air in the washing tub. A first blower for discharging from the exhaust port; an opening for discharging air discharged from the exhaust port to the outside of the dishwasher body; an exhaust path communicating the exhaust port with the opening; and the exhaust path And a second air blowing means for sending outside air to the mixing chamber arranged in the middle, and the air blowing port of the second air blowing means is disposed above the bottom surface of the mixing chamber, and is a heat rinsing / drying step. Even if condensed water collects on the bottom surface of the mixing chamber, since the air outlet of the second air blowing means is disposed above the bottom surface of the mixing chamber, the water condensed from the air outlet of the second air blowing means. Can prevent the intrusion of the In addition, since the high-temperature steam discharged from the exhaust port is cooled in the mixing chamber, the temperature of the air when discharged outside the apparatus can be stably reduced, and the user can be prevented from getting burned. .

  In particular, the second invention is provided with a blowing path that communicates the blowing port of the second blowing means of the first invention with the mixing chamber, and the bottom surface of the blowing path is changed from the second blowing means to the mixing chamber. Condensed water condensed in the blowing path can be smoothly collected on the bottom surface of the mixing chamber by the weight of the condensed water or by the blowing by the second blowing means. And, it is possible to prevent intrusion from the air blowing port of the second air blowing means arranged above the bottom surface of the mixing chamber, there is little failure, and the air temperature in the cleaning tank is stabilized when discharged outside the apparatus. It can be reduced and the burn of the user can be prevented.

  In particular, the third invention communicates the mixing chamber of the first or second invention with the washing tank, and returns the condensed water generated when the air discharged from the exhaust port and the outside air are mixed into the washing tank. Even if the water level of the condensed water collected on the bottom of the mixing chamber rises after the heating rinsing / drying process has been carried out for a long time, the condensed water remains at the height of the air blowing port of the second blowing means. Since the condensed water is returned from the return hole to the washing tank through the return path before the occurrence of the trouble, it is possible to prevent the condensed water from entering from the air blowing port of the second air blowing means, and there is little failure. Since the high-temperature steam discharged from the exhaust port is cooled in the mixing chamber, the temperature of the air when discharged to the outside of the machine can be stably reduced, and the user can be prevented from getting burned. In addition, even if cleaning water in the cleaning process enters the exhaust path from the exhaust port, it is returned to the cleaning tank from the return hole through the return path communicating with the exhaust path, so that the second blower located higher than the bottom surface of the mixing chamber It is possible to reliably prevent the cleaning water from entering the air blowing port of the means, and to reduce failure.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
1 is a side sectional view of a dishwasher according to Embodiment 1 of the present invention, FIG. 2 is a sectional view of a main part of the dishwasher, and FIG. 3 is a perspective view of an inner surface of a washing tub of the dishwasher.

  1 to 3, the dishwasher main body 16 accommodated in the system kitchen has an opening 16 a for inserting and removing the washing tub 17 at the front, and the washing tub 17 uses the washing tub 17 as a dishwasher. A front panel 26 serving as a door that closes the opening 16a when housed in the main body 16 is provided at the front, and an opening 18 is provided on the upper side. ing. Below the tableware basket 20, there are provided a rotatable cleaning nozzle 21 for injecting cleaning water and a pump 22 for circulating the cleaning water accumulated in the cleaning tank 17 through the cleaning nozzle 21. In addition, a heater 24 for heating the cleaning water and the air blown by the first blowing means 23 is disposed at the bottom.

  The exhaust port 25 is disposed between the front panel 26 provided in front of the cleaning tank 17 and the cleaning tank 17 so that the air in the cleaning tank 17 is exhausted from the exhaust port 25 by the first blowing means 23. It is configured. The opening 27 is provided above the front panel 26, and the exhaust port 25 and the opening 27 are communicated with each other through an exhaust path 28.

  The second air blowing means 29 has substantially the same capacity as the first air blowing means 23 and takes outside air from an opening (not shown) and sends it to the air blowing path 30 disposed behind the front panel 26. The air blowing path 30 joins in a mixing chamber 31 arranged in the middle of the exhaust path 28, and the air discharged from the cleaning tank 17 and the outside air are mixed in the mixing chamber 31.

  Here, the positional relationship among the air blowing port 29 a of the second air blowing means 29, the air blowing path 30, and the bottom surface of the mixing chamber 31 is higher in the order shown on the left, and the air blowing path 30 is the air blowing port 29 a of the air blowing means 29. The bottom surface of the mixing chamber 31 communicates with a gentle inclined surface. In the mixing chamber 31, the mixed air in which the steam discharged from the exhaust port 25 and the outside air taken in by the second blowing means 29 are mixed is discharged from the opening 27 to the outside of the apparatus. .

  The return hole 32 is formed in the cleaning tank 17 below the air blowing port 29 a of the air blowing means 29, and communicates with the mixing chamber 31 through the return path 33. The bottom surface of the return path 33 is inclined from the mixing chamber 31 toward the return hole 32. Further, an air guide 34 is formed on the return path 33 on the side of the mixing chamber 31 in order to make it easier for the air in the cleaning tank 17 to go to the mixing chamber 31. A shield 35 is formed in the cleaning tank 17 in the cleaning tank 17 of the return hole 32.

  In addition, a temperature detection unit 36 that detects the temperature of the cleaning water is provided at the lower portion of the cleaning tank 17, and the control unit 37 that sequentially controls the cleaning, rinsing, and drying steps is based on a signal from the temperature detection unit 36. The operation time of the air blowing means 23 and the second air blowing means 29 is controlled, and the cleaning tank 17 reaches a certain temperature (for example, 50 ° C.) by the temperature detecting means 36 in the cleaning / rinsing process. When it is detected that the second air blowing means 29 is operated and the drying process is started, the second air blowing means 29 is operated and the first air blowing means 23 is intermittently operated for several minutes and then continuously operated. The operation of the second blowing means 29 is stopped after a certain time has elapsed.

  In addition, a first rail 38 is fixed below the washing tank 17, and the first rail 38 is supported by a second rail 39 fixed to the dishwasher body 16 so as to be movable in the front-rear direction. Yes. When the tableware 19 is put in and out, the handle 40 provided on the front panel 26 is grasped, the washing tub 17 is pulled forward, and the tableware 19 is accommodated from the upper opening 18.

  The operation and action of the dishwasher in the present embodiment configured as described above are as follows.

  First, the user grasps the handle 40 provided on the front panel 26, pulls out the washing tub 17 from the dishwasher main body 16, and sets the dirty tableware 19 in the tableware basket 20 disposed in the washing tub 17. Next, when the washing tub 17 is returned to the dishwasher main body 16 and the operation is started, the washing water is heated from the washing nozzle 21 toward the tableware 19 while the washing water is heated by the heater 24 arranged on the bottom of the washing tub 17. A cleaning process is performed to spray and clean the tableware 19. Thereafter, after rinsing several times, the first air blowing means 23 is heated while the washing water is heated to about 80 ° C. by the heater 24 and the heating rinsing step is performed, and then the air is heated by the heater 24. The heated air containing a lot of moisture is discharged to the outside through the exhaust port 25, the exhaust path 28, and the opening 27, and a drying process for drying the tableware 19 and the cleaning tank 17 is performed to finish the operation.

  During the cleaning process, even if the cleaning water ejected from the cleaning nozzle 21 enters the exhaust path 28 from the exhaust port 25, it returns to the cleaning tank 17 through the return hole 33 through the return path 33.

  In the initial stage of the drying process, heated air containing a large amount of moisture is discharged from the exhaust port 25, but by operating the second blowing means 29 and intermittently operating the first blowing means 23 for several minutes, Since the air volume of the first air blowing means 23 can be easily reduced, the temperature of the air in the cleaning tank 17 discharged from the exhaust port 25 is lowered, and the moisture contained in the air is reduced, so that the air is heated. Burns and condensation outside the machine can be prevented. In addition, the dew condensation water in the mixing chamber 31 that is frequently generated in the initial stage of the drying process for the same reason decreases the pressure in the cleaning tank 17 when the first blower unit 23 is stopped in an intermittent operation. Through the return hole 32 to the cleaning tank 17.

  Further, since the air blowing path 30 communicates the air blowing port 29a of the second air blowing means 29 and the bottom surface of the mixing chamber 31 with a gentle inclination, the condensed water adhering to the air blowing path 30 is caused by its own weight, or The air is blown from the second blowing means 29 so that it can be collected on the bottom surface of the mixing chamber 31 and poured out from the return hole 32 to the cleaning tank 17.

  By collecting the condensed water in the washing tank 17 in this way, the moisture of the air can be reduced, the moisture of the air discharged from the opening 27 can be reduced, and the condensation outside the machine can be prevented. can do.

  Further, since the air discharged from the exhaust port 25 is guided to the mixing chamber 31 by the air guide body 34, the amount of air returning from the return hole 32 to the cleaning tank 17 can be reduced. The discharged air and the outside air sent from the second blowing means 29 can be mixed efficiently.

As described above, according to the present embodiment, the washing tank 17 having the exhaust port 25 for discharging the air inside the dishwasher main body 16 having the opening 16a in the front is provided so as to be freely drawable . First air blowing means 23 for discharging air from the exhaust port 25 to the outside of the machine, an opening 27 for discharging air discharged from the exhaust port 25 to the outside of the dishwasher body 16, the exhaust port 25, and the An exhaust path 28 that communicates with the opening 27, and a second air blowing means 29 that sends outside air to the mixing chamber 31 that is disposed in the middle of the exhaust path 28, and the air blowing port 29a of the second air blowing means 29 includes: Due to the arrangement above the bottom surface of the mixing chamber 31, dew condensation water generated by mixing the heated air discharged from the cleaning tank 17 and the outside air during the heating rinsing / drying process is concentrated on the bottom surface of the mixing chamber 31. For mixing chamber The dew condensation water can be prevented from entering from the air blowing port 29a of the second air blowing means 29 disposed above the bottom surface of the air, and there is little failure and the air in the washing tank when discharged outside the apparatus. The temperature can be stably reduced to prevent user burns and the like.

  Further, by forming the bottom surface of the air passage 30 connecting the air outlet 29a of the second air blowing means 29 and the mixing chamber 31 with an inclination downward toward the mixing chamber 31 from the second air blowing means 29, Condensed water condensed in the blowing path 30 can also be smoothly collected on the bottom surface of the mixing chamber 31 by the weight of the condensed water or by the second blowing means 29. And the penetration from the air outlet 29a of the 2nd ventilation means 29 arrange | positioned upwards from the bottom face of the mixing chamber 31 can be prevented, there is little failure, and the inside of the washing tank 17 when it discharges | emits outside the apparatus. The air temperature can be stably reduced to prevent user burns and the like.

  In addition, the mixing chamber 31 and the cleaning tank 17 communicate with each other, and a return path 33 for returning the condensed water generated when the air discharged from the exhaust port 25 and the outside air are mixed into the cleaning tank 17 is provided. Even if the rinsing / drying process is performed for a long time and the water level of the condensed water gathered on the bottom surface of the mixing chamber 31 rises, before the condensed water reaches the height of the air outlet 29a of the second air blowing means 29, Since the dew condensation water is returned from the return hole 32 to the cleaning tank 17 through the return path 33, it is possible to prevent the dew condensation water from entering from the air blowing port 29a of the second air blowing means 29, and there is little failure and the outside of the apparatus. Thus, the temperature of the air in the cleaning tank 17 when it is discharged can be stably reduced, and burns and the like of the user can be prevented.

  Further, even if the cleaning water in the cleaning process enters from the exhaust port 25 of the cleaning tank 17, it is returned to the cleaning tank 17 from the return hole 32 through the return path 33. The ingress of washing water from the blowing port 29a of the blowing means 29 can be surely prevented, there is little failure, and the air temperature in the washing tank 17 when discharged to the outside of the machine can be stably reduced. Can prevent burns.

  In the dishwasher according to the present invention, the condensed water generated by mixing the heated air discharged from the washing tank and the outside air during the heating rinsing / drying process is concentrated on the bottom surface of the mixing chamber. It is possible to prevent intrusion from the air blowing port of the second air blowing means arranged, there are few failures, and the temperature of the air from the washing tank when discharged outside the apparatus is stably reduced, It can prevent user burns and is applicable not only to dishwashers but also to various types of equipment such as clothes dryers and food dryers that discharge generated steam to the outside.

Side sectional view of the dishwasher according to Embodiment 1 of the present invention. Cross section of the main part of the dishwasher Perspective view of the inside of the washing tub of the dishwasher Side view of a conventional dishwasher

Explanation of symbols

DESCRIPTION OF SYMBOLS 16 Dishwasher main body 16a Opening part 17 Washing tank 23 1st ventilation means 25 Exhaust port 27 Opening 28 Exhaust path 29 2nd ventilation means 29a Blower port 30 Blower path 31 Mixing chamber 32 Return hole

Claims (3)

A dishwasher body having an opening in the front, a washing tub provided in the dishwasher body so as to be freely drawn out, and having an exhaust port for discharging the air inside, and the air in the washing tub being discharged from the exhaust port A first blower, an opening for discharging the air discharged from the exhaust port to the outside of the dishwasher body, an exhaust path communicating the exhaust port and the opening, and an intermediate portion of the exhaust path. And a second blower for sending outside air to the mixing chamber, and the blower opening of the second blower is disposed above the bottom surface of the mixing chamber. The air blowing path which connects the ventilation port and mixing chamber of a 2nd ventilation means is provided, The bottom face of the said ventilation path was made to incline below toward the said mixing chamber from the said 2nd ventilation means. dishwasher. The dishwasher according to claim 1 or 2, further comprising a return path that connects the mixing chamber and the washing tank and returns condensed water generated when air discharged from the exhaust port and outside air are mixed into the washing tank.