JP2007068601A - Dishwasher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dishwasher preventing scald by heated air exhausted outside the machine or dew condensation outside of the machine. <P>SOLUTION: The dishwasher includes a washing tub 16 for housing dishes 18, a washing nozzle 20 provided in the washing tub 16 and washing the dishes 18, a first blowing means 22 for exhausting air in the washing tub 16 to the outside the machine through an exhaust port 24, and a second blowing means 28 for mixing outside air into the air exhausted from the exhaust port 24. The temperature and humidity of the air in the washing tub 16, which is exhausted outside the machine, are readily reduced without deteriorating the drying performance for the dishes 18, so that the scald by heated air or dew condensation outside of the machine is prevented. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

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

  A conventional dishwasher of this type is configured as shown in FIG. 2 (see, for example, Patent Document 1). Hereinafter, the configuration will be described.

  As shown in FIG. 2, reference numeral 1 denotes a dishwasher main body accommodated in the system kitchen, and a washing tub 2 provided in the dishwasher main body 1 has an opening 3 at the upper side and accommodates tableware 4. A car 5 is arranged.

  A rotatable cleaning nozzle 6 is provided below the tableware basket 5, and the cleaning water accumulated in the cleaning tank 2 is circulated by the pump 7 and sprayed from the cleaning nozzle 6 to clean the tableware 4.

  In addition, 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 discharged from the exhaust port 9 to the outside by the blower means 10. Dry.

  A first rail 11 is fixed to the side of the washing tub 2, and the first rail 11 is supported by a second rail 12 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 13 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 pushed back to the dishwasher main body 1 and the operation is started, the washing water is heated by the heater 14 disposed at the bottom of the washing tub 2, and the heated washing water is supplied from the washing nozzle 6 to the dishes 4. The cleaning process is performed to remove the dirt of the dishes 4. Then, after rinsing the dishes 4, the operation is finished through a drying process.
JP 2001-46301 A

  However, in such a conventional dishwasher configuration, it is necessary to dispose 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 where the dishwasher is accommodated in the system kitchen. There is. 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, air that contains a lot of moisture is discharged at the initial stage of the drying process, which causes high temperatures and is likely to cause burns and causes condensation outside the machine due to the temperature difference from the outside air. Was.

  Further, in the cleaning / rinsing process, when the cleaning water temperature is high (about 50 ° C.), the cleaning water vapor leaks from the exhaust port 9 and condenses on the front panel 8 in which the exhaust port 9 is disposed. It was.

  In addition, when the outside air is mixed in the exhaust port 9, the amount of air in the cleaning tank 2 discharged by the blowing means 10 and the amount of outside air to be mixed cannot be adjusted. In order to lower the temperature of the air having a large amount of air, a large amount of outside air is required with respect to the air in the washing tank 2, and the amount of outside air is increased or the amount of air discharged in the washing tank 2 is reduced. If the amount of outside air is increased more than necessary, it is necessary to increase the capacity of the blowing means 10, and as a result, the capacity becomes large, and it is very wasteful to store as much tableware 4 as possible in a limited space. .

  Moreover, since the discharge | emission of the water | moisture content in the washing tank 2 becomes slow by reducing the discharge | emission amount of the air in the washing tank 2, it had the subject that a drying process became long as a result.

  The present invention solves the above-mentioned conventional problem, without lowering the drying performance of the tableware, while lowering the humidity while easily reducing the temperature of the air in the washing tank discharged outside the machine, The object is to provide a dishwasher that can prevent burns and dew condensation outside the machine.

  In order to solve the above-described conventional problems, a dishwasher according to the present invention includes a washing tub for storing tableware, a washing nozzle provided in the washing tub for washing the tableware, and air in the washing tub. It is provided with the 1st ventilation means discharged | emitted out of an apparatus through an exhaust port, and the 2nd ventilation means to mix external air into the said air discharged | emitted from the said exhaust port, without reducing the drying performance of tableware Since the temperature and humidity of the air in the cleaning tank discharged outside the machine can be easily lowered, it is possible to prevent burns and condensation outside the machine due to heated air.

  The dishwasher of the present invention can reduce the humidity while easily lowering the temperature of the air in the washing tank discharged outside the machine without deteriorating the drying performance of the dishes. Condensation to the outside can be prevented.

  According to a first aspect of the present invention, there is provided a cleaning tank for storing tableware, a cleaning nozzle provided in the cleaning tank for cleaning the tableware, and the air in the cleaning tank being discharged outside the apparatus through an exhaust port. It is provided with a blowing means and a second blowing means for mixing outside air into the air discharged from the exhaust port, and the inside of the washing tank discharged outside the machine without deteriorating the drying performance of the tableware. Since the temperature and humidity of the air can be easily lowered, it is possible to prevent burns caused by heated air and condensation outside the machine.

  In particular, the second invention is provided with an opening provided on the downstream side of the exhaust port of the first invention for exhausting air to the outside of the machine, an exhaust path communicating with the exhaust port, and the exhaust path. The second air blowing means is communicated, and the air discharged from the cleaning tank through the exhaust port is surely mixed with the outside air, the temperature of the air discharged outside the apparatus is lowered, and the air is mixed. Condensation that occurs can be collected in the exhaust path to prevent condensation outside the machine.

  In particular, the third invention allows the exhaust path of the first or second invention and the second air blowing means to communicate with each other via the air blowing path, and the air passing through the air exhaust path and the air blowing are passed through the air blowing path. It is provided to exchange heat with the air passing through the path.When heat is exchanged, moisture in the air discharged from the cleaning tank is surely condensed in the exhaust path and discharged from the machine through the opening. Water in the air can be reduced.

  In the fourth invention, in particular, the washing tub of any one of the first to third inventions can be pulled out from the dishwasher body, and even in the case of a dishwasher built in a predetermined position of the kitchen, Since the temperature and humidity of the air discharged from the provided opening are low, a dishwasher that is safer and easier to use can be provided.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by this embodiment.

(Embodiment 1)
FIG. 1 is a side sectional view of a dishwasher according to a first embodiment of the present invention.

  In FIG. 1, reference numeral 15 denotes a dishwasher main body accommodated in the system kitchen. A washing tub 16 provided in the dishwasher main body 15 has an opening 17 on the upper side and a dish basket for accommodating the dishes 18. 19 is arranged. A cleaning nozzle 20 for spraying cleaning water is rotatably provided below the tableware basket 19, and a pump 21 for circulating the cleaning water stored in the cleaning tank 16 while spraying from the cleaning nozzle 20 is provided. ing. A heater 23 for heating the cleaning water and the air blown by the first blowing means 22 is disposed at the bottom of the cleaning tank 16.

  The exhaust port 24 is disposed between the front panel 25 provided in front of the cleaning tank 16 and the cleaning tank 16 so that the air in the cleaning tank 16 is exhausted from the exhaust port 24 by the first blowing means 22. It is configured. Reference numeral 26 denotes an opening provided on the front panel 25 for exhausting air out of the apparatus.

  Reference numeral 28 denotes a second air blowing means having substantially the same air blowing capacity as that of the first air blowing means 22, and is configured to communicate outside air to the air blowing path 29 disposed behind the front panel 25 and to blow the air to the opening 26. Has been. The air passage 29 is arranged so as to be in surface contact with the exhaust passage 27 in the front-rear direction, and is configured such that the air from the cleaning tank 16 discharged through the exhaust port 24 and the outside air are mixed at the opening 26. .

  In addition, a temperature detection means 30 for detecting the temperature of the cleaning water or the cleaning tank 16 is provided below the cleaning tank 16. The control means 31 for sequentially controlling the cleaning, rinsing and drying processes is configured to control the operation time of the first blower means 22 and the second blower means 28 according to a signal from the temperature detection means 30. When the temperature detecting means 30 detects a certain temperature (for example, 50 ° C.) in the rinsing process, the second blowing means 28 is operated, and when entering the drying process, the second blowing means 28 is operated and the first blowing means 28 is operated. The air blowing means 22 is intermittently operated for several minutes and then continuously operated, and after a certain time has elapsed, the operation of the second air blowing means 28 is stopped.

  Moreover, the 1st rail 32 is being fixed to the both sides | surfaces of the washing tank 16, and the 1st rail 32 is supported by the 2nd rail 33 fixed to the dishwasher main body 15 so that a parallel movement is possible in the front-back direction. ing. When the tableware 18 is put in and out, the handle 34 provided on the front panel 25 is grasped, the washing tank 16 is drawn forward, and the tableware 18 is accommodated from the upper opening 17.

  The operation and action of the dishwasher in the above configuration will be described below.

  First, the user grasps the handle 34 provided on the front panel 25, pulls out the washing tank 16 from the dishwasher main body 15, and sets the dirty dishes 18 in the dish basket 19 disposed in the washing tank 16. Next, when the washing tub 16 is pushed back to the dishwasher main body 15 and the operation is started, the washing water is heated by the heater 23 arranged on the inner bottom of the washing tub 16, and the heated washing water is supplied from the washing nozzle 20 to the dishes. A cleaning process is carried out to spray the tableware 18 and clean the dishes 18. Thereafter, after rinsing several times, the heater 23 is rinsed while being heated to about 80 ° C., and the heating rinsing process is performed. Then, the process proceeds to a drying process in which the tableware 18 and the washing tank 16 are dried. In the drying process, while the air in the cleaning tank 16 is heated by the heater 23, the first blowing unit 22 contains a large amount of water and high-temperature heated air is discharged from the exhaust port 24, and is discharged from the exhaust port 24. The air merges with the outside air sent by the second air blowing means 28 through the opening 26, and the temperature and humidity are reduced, and the air is discharged to the outside. When the drying process is finished, all the operations of the dishwasher body 15 are finished.

  At the initial stage of the drying process, heated air containing a lot of moisture is discharged from the exhaust port 24. By operating the second blower unit 28 and intermittently operating the first blower unit 22 for several minutes, Since the air volume of the first air blowing means 22 can be easily reduced, the air volume after the intermittent operation can continue the drying process as before, and without easily deteriorating the drying performance of the dishes 18. Further, by reducing the temperature of the air in the cleaning tank 16 discharged from the exhaust port 24 and reducing the moisture of the air, it is possible to prevent burns due to heated air and condensation outside the apparatus.

  Further, when the washing water temperature becomes high, such as a heating rinse step, the washing water vapor leaks from the exhaust port 24, but the temperature detection means 30 indicates that the washing tank 16 has reached a certain temperature (for example, 50 ° C.). When detected, the operation of the second air blowing means 28 reduces the moisture of the exhausted air and prevents condensation on the front panel 25.

  The operation control of the second air blowing means 28 does not use the temperature detecting means 30, and if the temperature in the cleaning tank 16 in each operation process can be grasped, the same effect can be obtained even if it is controlled by time. can get. Further, since the second blower means 28 is connected to the exhaust passage 27 via the blower passage 29, the air discharged from the cleaning tank 16 through the exhaust port 24 and the outside air are reliably mixed at the opening 26. At the same time, the condensation that occurs simultaneously with the mixing can be collected in the air passage 29 to prevent condensation outside the apparatus.

  Further, since the exhaust passage 27 and the blower passage 29 are in surface contact with each other in the front-rear direction, heat exchange is performed at the surface contact portion, and moisture in the air discharged from the cleaning tank 16 through the exhaust port 24 is condensed to open the opening. The moisture in the air discharged from the air can be further reduced.

  The exhaust path 27 and the air supply path 29 do not necessarily need to be in surface contact with each other in the front-rear direction. The same effect can be obtained if the heat exchange is configured such that the air supply path 29 is disposed in the left-right direction or the exhaust path 27. Is obtained. Even in the case of a dishwasher built in a predetermined position of the kitchen, the temperature of the air discharged from the opening 26 provided on the front surface is low, so that safety can be further improved.

  As described above, according to the present embodiment, the cleaning tank 16 provided in the dishwasher body 15, the cleaning nozzle 20 provided in the inner bottom of the cleaning tank 16, and the air in the cleaning tank 16 are exhausted from the exhaust port. The first air blowing means 22 that discharges to the outside of the machine through 24 and the second air blowing means 28 that mixes outside air into the air in the cleaning tank 16 discharged from the exhaust port 24, thereby drying the dishes. Without lowering the performance, the temperature of the air in the cleaning tank 16 discharged from the exhaust port 24 is easily lowered, and the humidity is reduced and discharged outside the apparatus, so that burns caused by heated air and the outside of the apparatus can be removed. Condensation can be prevented.

  In addition, an opening 26 is provided on the downstream side of the exhaust port 24, the exhaust port 24 and the opening 26 are communicated with each other through an exhaust path 27, and a second air blowing means 28 is connected to the exhaust path 27, whereby the cleaning tank 16. It is possible to reliably mix the air discharged from the inside and the outside air, and to collect the condensation that occurs simultaneously with the mixing in the exhaust passage 27 and prevent the condensation outside the apparatus.

  In addition, a ventilation path 29 for blowing air by the second blowing means 28 is provided, and the ventilation path 29 is provided so as to exchange heat with the air in the cleaning tank 16 that passes through the exhaust path 27. It is possible to condense the moisture of the air discharged from the cleaning tank 16 at the time of replacement, and to reduce the moisture of the air discharged from the opening 26.

  Further, since the washing tub 16 can be pulled out from the dishwasher main body 15, even in the case of a dishwasher built in a predetermined position of the kitchen, the temperature of the air discharged from the opening provided on the front surface is low. Safety can be improved.

  In the above embodiment, the air flow rate of the first air blowing means 22 and the second air blowing means 28 is changed between continuous operation and intermittent operation, that is, depending on the operation time. The air volume may be changed by changing the rotation speed.

  As described above, the dishwasher according to the present invention can easily reduce the temperature and humidity of the air in the washing tank discharged outside the machine without deteriorating the drying performance of the dishes, It can prevent dew condensation to the outside, and can be applied to various appliances such as cooking appliances, drying appliances and processing appliances that discharge steam to the outside in addition to household and commercial dishwashers.

Side sectional view of the dishwasher according to Embodiment 1 of the present invention. Side view of a conventional dishwasher

Explanation of symbols

DESCRIPTION OF SYMBOLS 15 Dishwasher main body 16 Washing tank 18 Tableware 20 Washing nozzle 22 1st ventilation means 24 Exhaust port 28 2nd ventilation means

Claims (4)

A cleaning tank for storing tableware; a cleaning nozzle provided in the cleaning tank for cleaning the tableware; a first blowing means for discharging the air in the cleaning tank to the outside through an exhaust port; and the exhaust The dishwasher provided with the 2nd ventilation means which mixes external air in the said air discharged | emitted from the opening | mouth. An opening provided on the downstream side of the exhaust port for exhausting air to the outside of the apparatus, an exhaust path communicating with the exhaust port and the opening are provided, and the exhaust path and the second blowing means are communicated. Dishwasher as described in The exhaust path and the second air blowing means are communicated with each other via the air blowing path, and the air blowing path is provided so as to exchange heat between the air passing through the exhaust path and the air passing through the air blowing path. The dishwasher according to 1 or 2. The dishwasher according to any one of claims 1 to 3, wherein the washing tank can be pulled out from the dishwasher body.