JP4089749B2 - 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 at the upper portion of the front panel 8 provided at the front portion of the cleaning tank 2, and the air in the cleaning tank 2 is exhausted by the air blowing means 10 via the exhaust path 11 by the blower 10. Drain the tableware 4 further by discharging it outside the machine.

A first rail 12 is fixed below the washing tank 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 tub 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 sprayed from the washing nozzle 6 toward the tableware 4 while the washing water is heated by the heater 15 arranged at the bottom of the washing tub 2. A cleaning process is performed to clean the dishes 4. Then, after rinsing tableware 4, a 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 addition, the cleaning water that has entered the exhaust passage 11 from the cleaning tank 2 stays during cleaning, which may cause a strange odor, or the condensate of the cleaning water that has entered the exhaust passage 11 or the vapor of the cleaning water condensed in the exhaust passage 11. As a result, the exhaust path 11 is blocked, the steam is not discharged smoothly, and the drying time of the tableware 4 is long.

  In order to solve the above problem, if the exhaust temperature is lowered by taking a structure that mixes with the outside air, the exhaust path 11 becomes longer. Therefore, the cleaning water that has entered the exhaust path 11 and the cleaning water that has condensed in the exhaust path 11 Condensation water of the steam became more prone to stay and became a bigger problem. Further, in order to mix with the outside air, when a mixing chamber is provided and second air blowing means such as an electrical component for sending the outside air to the mixing chamber is used, there is much retention of condensed water in the cleaning water and cleaning water vapor. In this case, not only water enters the rotating part of the second air blowing means and causes a failure, but also when water enters the charging part of the second air blowing means, the part rusts and energization is not possible. There were problems such as becoming stable and being unable to drive.

  The present invention solves the above-described conventional problems, and the odor caused by the condensation of cleaning water that has entered the exhaust passage or the vapor of the cleaning water in the exhaust passage, deteriorating drying performance, and condensation outside the machine. The purpose is to provide a dishwasher that can be used with peace of mind with little breakdown.

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 washing tank, an opening for discharging the air discharged from the exhaust port to the outside of the dishwasher body, an exhaust path communicating with the exhaust port and the opening, the middle of the exhaust path, and the exterior of the dishwasher body And a return path for returning condensed water generated in the exhaust path or the blow path into the cleaning tank, and the return path extends from the exhaust path or the blow path to the cleaning tank. configuration and then, near the entrance from the exhaust path of the return path, guides the air discharged from the cleaning tank to the exhaust path, air is returned the discharge from the cleaning tank Which was provided to suppress electrical Futei to return to the cleaning tank through road, the steam high temperature discharged from the exhaust port temperature drops mixed with ambient air, hot steam from the opening is discharged to the outside There is nothing. In addition, the cleaning water that has entered the exhaust path and the condensed water from the steam of the cleaning water that has condensed in the exhaust path are returned to the cleaning tank through the return path so that they do not stay inside. The dishwasher can be used with peace of mind because it can prevent off-flavors, reduced drying performance, dew condensation outside the machine, and can prevent failure due to ingress of stagnant water, poor insulation, and the like. In addition, the exhaust discharged from the cleaning tank can be mixed with the outside air from the ventilation path, and the exhaust discharged from the cleaning tank to the exhaust path does not go out of the machine and returns to the cleaning tank from the return hole. The amount of exhaust gas that is generated can be reduced, and the deterioration of the drying performance can be prevented.

In the dishwasher according to the present invention, the cleaning water that has entered the exhaust path and the condensed water generated by condensation of the cleaning water vapor in the exhaust path are returned to the cleaning tank. In addition, it is possible to prevent the deterioration of the drying performance, to prevent failure due to the ingress of stagnant water, insulation failure, etc., and to use it with confidence. In addition, the exhaust discharged from the cleaning tank can be mixed with the outside air from the ventilation path, and the exhaust discharged from the cleaning tank to the exhaust path does not go out of the machine and returns to the cleaning tank from the return hole. The amount of exhaust gas that is generated can be reduced, and the deterioration of the drying performance can be prevented.

1st invention is the dishwasher main body which has an opening part ahead, the washing tank which was provided in the said dishwasher main body so that extraction was possible, and exhausted the inside which discharged | emitted air, and was discharged | emitted from the said exhaust port An opening for discharging air to the outside of the dishwasher body, an exhaust path communicating with the exhaust port and the opening, a ventilation path communicating between the middle of the exhaust path and the outside of the dishwasher body, and the exhaust path Alternatively, a return path for returning condensed water generated in the air blowing path to the cleaning tank is provided, and the return path is configured to extend from the exhaust path or the air blowing path to the cleaning tank, and from the exhaust path of the return path. The air exhausted from the cleaning tank is guided to the exhaust path in the vicinity of the inlet of the air, and the air exhausted from the cleaning tank is prevented from returning to the cleaning tank through the return path. Guide Futei in which the provided steam high temperature discharged from the exhaust port is mixed with the outside air, the temperature is lowered, it is not the high-temperature steam from the opening is discharged to the outside. In addition, the cleaning water that has entered the exhaust path and the condensed water from the steam of the cleaning water that has condensed in the exhaust path are returned to the cleaning tank through the return path so that they do not stay inside. The dishwasher can be used with peace of mind because it can prevent off-flavors, reduced drying performance, dew condensation outside the machine, and can prevent failure due to ingress of stagnant water, poor insulation, and the like. In addition, the exhaust discharged from the cleaning tank can be mixed with the outside air from the ventilation path, and the exhaust discharged from the cleaning tank to the exhaust path does not go out of the machine and returns to the cleaning tank from the return hole. The amount of exhaust gas that is generated can be reduced, and the deterioration of the drying performance can be prevented.

In the second invention, in particular, the return hole for communicating the return path and the cleaning tank of the first invention is disposed below the connection part of the exhaust path and the blower path, and the outside air and the cleaning water vapor are mixed. Condensed water generated when the water is discharged can be efficiently returned to the washing tank. This condensed water stays in the exhaust passage, resulting in a decrease in drying performance, preventing condensation outside the machine, It is possible to provide a dishwasher that can prevent insulation failure and can be used with peace of mind.

  In particular, the third invention is such that the bottom surface of the return path of the first or second invention is inclined downward toward the washing tank, and the dew condensation water generated when the outside air and the washing water vapor are mixed. Can be efficiently returned to the washing tank, and this condensation water stays in the exhaust path, preventing the drying performance from deteriorating and dew condensation outside the machine. It is possible to provide a dishwasher that can be used with peace of mind.

  In particular, the fourth invention includes a first blower that discharges the air in the cleaning tank of any one of the first to third inventions to an exhaust path, and a second blower that sends outside air to the blower path. Efficiently mixing the air discharged from the cleaning tank and the outside air sent from the second blowing means by appropriately controlling the operation of the first blowing means and the second blowing means. Can be made.

  The fifth aspect of the invention is particularly a mixing chamber for mixing the air discharged from the cleaning tank and the outside air sent to the blower path at the connection part of the exhaust path and the blower path of any one of the first to fourth inventions. The air discharged from the cleaning tank to the exhaust passage and the outside air sent to the blower passage can be mixed more efficiently in the mixing chamber, the temperature of the mixture can be lowered efficiently, and the opening High temperature steam is not discharged from the outside.

  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. When housed in the main body 16, it has a front panel 26 that serves as a door for closing the opening 16 a, and has an opening 18 on the upper side, and a tableware basket 20 that houses the tableware 19 is disposed. Below the tableware basket 20, a cleaning nozzle 21 that jets cleaning water and is rotatable, and a pump 22 that circulates the cleaning water accumulated in the cleaning tank 17 through the cleaning nozzle 21 are provided. In addition, a heater 24 that heats the cleaning water and the air blown by the first blower 23 is disposed at the bottom of the washing tank 17.

  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 communicate 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 is a mixing chamber 31 and merges with the exhaust path 28 to mix the air in the cleaning tank 17 and the outside air. The air-fuel mixture mixed in the mixing chamber 31 is discharged from the opening 27 to the outside.

  The return hole 32 is formed in the cleaning tank 17 below the mixing chamber 31 and communicates with the mixing chamber 31 via 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 means 36 for detecting the temperature of the cleaning water is provided at the lower part of the cleaning tank 17. The operation time of the air blowing means 23 and the second air blowing means 29 is configured to be controlled. In the cleaning / rinsing process, the temperature detecting means 36 sets the temperature of the cleaning tank 17 to a predetermined temperature (for example, 50 ° C.). When 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. The operation is continuously performed, and the operation of the second air blowing unit 29 is stopped after a certain time has elapsed.

  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 main 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 configured as described above will be described.

  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 arranged 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 heater 24 is rinsed while being heated to about 80 ° C., and the heating rinse process is performed. While discharging heated air containing a large amount of moisture from the exhaust port 25, a drying process for drying the interior of the tableware 19 and the washing tub 17 is performed, and the operation is terminated.

  Even if the cleaning water ejected from the cleaning nozzle 21 during the cleaning process enters the exhaust path 28 from the exhaust port 25, it returns to the cleaning tank 17 from the return hole 32 via the return path 33. The washing water does not stay in the air passage 30 and the mixing chamber 31. Further, since the shield 35 is formed in the cleaning tank 17 on the cleaning tank 17 side of the return hole 32, the cleaning water does not directly hit the return hole 32, and the dishes 19 that flow along with the cleaning water can be used. Garbage such as leftovers does not directly hit the return hole 32. For this reason, it is possible to prevent dust such as leftovers of the tableware 19 contained in the washing water from entering the route such as the mixing chamber 31 and the exhaust route 28 from the return hole 32.

  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 of the air is reduced, thereby causing burns caused by heated air. Condensation outside the machine can be prevented.

  For the same reason, the dew condensation water in the mixing chamber 31 that frequently occurs in the initial stage of the drying process is reduced in pressure in the cleaning tank 17 when the first blowing means 23 is stopped in intermittent operation. It flows out from the return hole 32 to the cleaning tank 17 via 33. At this time, the return hole 32 is formed in the cleaning tank 17 below the mixing chamber 31, and the bottom surface of the return path 33 is inclined downward from the mixing chamber 31 toward the return hole 32. Condensed water can flow into the washing tank 17. And the fall of the drying performance of the tableware 19 can be prevented by returning the ventilation volume after intermittent operation to the conventional drying process. Condensed water staying after the intermittent operation flows out from the return hole 32 to the cleaning tank 17 when the first blowing means 23 stops after the drying is completed. Moreover, if the 1st ventilation means 23 is stopped several times during a drying process, dew condensation water can be returned to the washing tank 17. FIG.

  By collecting the condensed water in the washing tank 17 in this way, the moisture contained in the air can be reduced, the moisture of the air discharged to the outside through the opening 27 can be reduced, and the outside of the machine Condensation can be prevented.

  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 dishwasher body 16, the washing tank 17 provided in the dishwasher body 16 and having the exhaust port 25 for exhausting the air inside, and the exhaust port 25 are exhausted. The exhaust 27 is exhausted to the outside of the dishwasher body 16, the exhaust passage 25 communicates with the opening 27, and the middle of the exhaust path 28 communicates with the outside of the dishwasher body 16. And the return path 33 for returning the condensed water generated in the exhaust path 28 or the blow path 30 to the cleaning tank 17, thereby providing the cleaning water that has entered the exhaust path 28 and the exhaust path 28. Condensed water of the cleaning water that has condensed in this way can be returned to the cleaning tank 17, which can prevent the off-flavor caused by these stagnant water, deterioration of drying performance, condensation outside the machine, and intrusion of stagnant water Disabilities, it is possible to prevent an insulation failure or the like, it is possible to provide a dishwasher that can be used with confidence.

  Further, since the return path 33 communicates the blowing path 30 and the cleaning tank 17, the cleaning water that has entered the exhaust path 28 and the dew condensation water of the cleaning water that has condensed in the exhaust path 28 are Since it returns to the washing tank 17 through the return path | route 33 from the ventilation path | route 30, it can eliminate staying in the ventilation path | route 30 inside.

  Further, since the return path 33 communicates the exhaust path 28 and the cleaning tank 17, the cleaning water that has entered the exhaust path 28 and the dew condensation water of the cleaning water condensed in the exhaust path 28 are Since it is returned from the exhaust path 28 to the cleaning tank 17 through the return path 33, it is possible to eliminate stagnation inside the exhaust path 28.

  The return path 33 is disposed below the connection between the exhaust path 28 and the blower path 30 to efficiently return the condensed water generated when the outside air and the cleaning water vapor are mixed to the cleaning tank 17. This is a dishwasher that can be used with peace of mind because it prevents the condensation performance from deteriorating due to the condensation water staying in the exhaust path 28, preventing condensation outside the machine, and preventing malfunction and insulation failure due to the intrusion of staying water. Can be provided.

  In addition, the bottom surface of the return path 33 is inclined downward toward the cleaning tank 17, so that the dew condensation water generated when the outside air and the cleaning water vapor are mixed can be efficiently returned to the cleaning tank 17. Provided a dishwasher that can be used with peace of mind, which prevents the condensation performance from deteriorating due to the condensation water staying in the exhaust passage 28, preventing condensation outside the machine, and preventing malfunction and insulation failure due to the ingress of staying water. be able to.

  In addition, since the first air blowing means 23 for discharging the air in the cleaning tank 17 to the exhaust path 28 and the second air blowing means 29 for sending the outside air to the air blowing path 30 are provided, By appropriately controlling the operation of the second blowing means 29, the air discharged from the cleaning tank 17 and the outside air sent from the second blowing means 29 can be efficiently mixed.

  In addition, by providing a mixing chamber 31 that mixes the air discharged from the cleaning tank 17 and the outside air sent to the blowing path 30 at the connection between the exhaust path 28 and the blowing path 30, the exhaust path from the cleaning tank 17 is provided. The air discharged to 28 and the outside air sent to the air blowing path 30 can be mixed more efficiently in the mixing chamber 31, the temperature of the air-fuel mixture can be lowered efficiently, and high-temperature steam is discharged from the opening 27 to the outside. It can be eliminated.

  Further, the washing tub 17 is provided so as to be freely drawn out of the dishwasher main body 16 having the opening 16a at the front, so that the washing tub 17 can be removed from the front of the washing tub 17 of the dishwasher main body 16 accommodated in the system kitchen. The temperature of the discharged air can be lowered and the dew condensation water can be returned to the washing tank 17, so that the safety of the user can be ensured and the feeling of use can be improved.

As described above, in the dishwasher according to the present invention, the washing water that has entered the exhaust path and the condensed water generated by condensation of the washing water vapor in the exhaust path are returned to the washing tank. Prevents bad smell caused by water and deterioration of drying performance, prevents malfunctions due to ingress of stagnant water, insulation failure, etc., and can be used with peace of mind, and exhaust and ventilation paths that are efficiently discharged from the washing tank The outside air from the cleaning tank can be mixed, and the amount of exhaust gas that has been discharged from the cleaning tank to the exhaust path can be reduced without returning to the cleaning tank from the return hole. The present invention can be applied not only to dishwashers but also to various devices 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 26 Front panel (door body)
27 Opening 28 Exhaust path 29 Second air blowing means 30 Air blowing path 31 Mixing chamber 32 Return hole 33 Return path 34 Air guide body 35 Shielding body

Claims (5)

A dishwasher main body having an opening in the front, a washing tub provided in the dishwasher main body so as to be freely drawn out, and having an exhaust port for discharging air inside, and the air discharged from the exhaust port in the dishwasher main body An opening for discharging to the outside, an exhaust path communicating with the exhaust port and the opening, a ventilation path communicating between the middle of the exhaust path and the outside of the dishwasher body, and the exhaust path or the ventilation path A return path for returning condensed water into the cleaning tank, wherein the return path is configured from the exhaust path or the blower path to the cleaning tank, and in the vicinity of the inlet of the return path from the exhaust path, It guides the air discharged from the cleaning tank to the exhaust path, provided to suppress electrical Futei that air discharged from the cleaning tank is returned to the cleaning tank through the return path Dishwasher. The dishwasher according to claim 1, wherein the return hole for communicating the return path and the washing tank is disposed below a connection portion between the exhaust path and the blower path. The dishwasher according to claim 1 or 2, wherein a bottom surface of the return path is inclined downward toward the washing tank. The dishwasher of any one of Claims 1-3 provided with the 1st ventilation means which discharges the air in a washing tank to an exhaust path, and the 2nd ventilation means which sends external air to a ventilation path. The dishwasher of any one of Claims 1-4 which provided the mixing chamber which mixes the air discharged | emitted from a washing tank, and the external air sent to the ventilation path in the connection part of an exhaust path and a ventilation path.