JP2004147742A - Dish washer/drier - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dish washer/drier which contains an air-blow method and a heater and performs dish washing through drying, reduces a production cost by simplifying the mechanism of the air-blow method and an air-blow passage, is miniaturized, efficiently supplies air to the heater and prevents uneven drying. <P>SOLUTION: Air blows generated through an air-blow method 23 which has a fan casing 25 containing an air-blow fan 24 is drawn into a washing tub 19 through an air-blow passage 30, and the air sent to the washing tub 19 is heated by a heater 22 attached in a washing tub 19. The air-blow method 23 and the air-blow passage 30 are provided to the bottom of the washing tub 19 and an outlet 31 of the air passage 30 is attached on a longitudinal extension of the heater 22 with an opening upwards from the bottom of the washing tub 19. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a dishwasher / dryer which incorporates a blowing means and a heater and performs dishwashing from washing to drying.
[0002]
[Prior art]
Conventionally, this type of dishwasher / dryer has been configured as shown in FIGS. Hereinafter, the configuration will be described.
[0003]
As shown in FIGS. 4 and 5, the water supply path 1 supplies tap water to the dishwasher main body 2, and controls water supply by a water supply valve 3. The washing tank 4 is provided inside the dishwasher main body 2, provided with a water storage unit 5 for storing water supplied inside the washing tank 4, and provided with a water level sensor 6 communicating with the water storage unit 5.
[0004]
The water stored in the water storage unit 5 is heated by a hot water heater 7 provided in the water storage unit 5 and pressurized by a circulation pump 8, and is directed from a plurality of washing nozzles 9 toward the tableware in the tableware basket 10. It is sprayed to wash dishes. The drain pump 11 discharges water in the washing tank 4.
[0005]
The fan heater 12 includes a hot air heater 13 and a blowing means 14 having a built-in blowing fan. Hot air generated by the fan heater 12 passes through a blowing path 15 and is directed toward the dishes of the tableware basket 10 in the washing tank 4. Is configured to be discharged. A door 16 is provided on the front surface of the dishwasher main body 2 so as to be openable and closable so that the tableware basket 10 can be taken in and out. To be discharged to The garbage filter 18 captures garbage attached to the tableware.
[0006]
The operation of the above configuration will be described. When the tableware is arranged in the tableware basket 10 and accommodated in the washing tank 4 and the operation is started, the water supply valve 3 is opened and water is supplied into the washing tank 4 through the water supply path 1. The supplied water is stored in a water storage section 5 in the washing tank 4. When a predetermined water level is detected by a water level sensor 6, the water supply valve 3 is closed to terminate the water supply, and the circulation pump 8 is driven.
[0007]
As a result, the water stored in the water storage unit 5 is heated by the hot water heater 7 and pressurized by the circulation pump 8 and is sprayed from the cleaning nozzle 9 toward the tableware in the tableware basket 10 to wash the tableware. . When the washing is completed, the water in the washing tank 4 is discharged by the drain pump 11.
[0008]
When the washing is completed, the drying process starts, and the hot air generated by the fan heater 12 is discharged through the air passage 15 toward the tableware of the tableware basket 10 stored in the washing tank 4 to dry the tableware. Discharge hot air to the outside.
[0009]
Further, as another conventional example, the basic configuration is substantially the same as the above-described conventional example, and a blowing means having a built-in blowing fan is installed on the back of the cleaning tank, and a damper is provided at an outlet of the blowing path to prevent steam and dust. There is also a configuration in which intrusion is prevented (for example, see Patent Document 1).
[0010]
[Patent Document 1]
JP-A-9-103402 (page 2-3, FIG. 1)
[0011]
[Problems to be solved by the invention]
However, in the above-described conventional configuration, since the fan heater 12 and the air passage 15 are completely separated from the cleaning tank 4, the structure is complicated, the number of parts is large, the production cost is high, and dishwashing and drying are performed. The space occupied by the inside of the machine main body 2 has increased, which has led to an increase in the size of the dishwasher main body 2 as a whole. In addition, when cleaning water enters the air passage 15 during cleaning, the cleaning water reaches the fan heater 12, and the motor that drives the blowing fan may be damaged.
[0012]
In the case where a blower with a built-in blower fan is installed on the back of the cleaning tank and a damper is provided at the outlet of the blower passage, the cleaning water hardly enters the blower with a built-in blower fan from the blower passage. Although this does not lead to damage to the motor that drives the fan, the problem of installing a blower on the back of the washing tank or providing a damper at the outlet of the blower passage complicates the structure and increases the size of the entire device. Had.
[0013]
In addition, the warm air discharged into the washing tank is directed toward the steam port, and is easily exhausted directly to the outside, so that uneven drying due to the place where the tableware is arranged is likely to occur.
[0014]
SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has an object to reduce the manufacturing cost by downsizing the structure of the blowing means and thus the blowing path, reduce the size, and eliminate the drying unevenness by efficiently applying the wind to the heater. .
[0015]
[Means for Solving the Problems]
In order to achieve the above object, the present invention guides wind generated by blowing means having a fan casing including a blowing fan into a cleaning tank through a blowing path, and provides the wind blown into the cleaning tank in the cleaning tank. Heating is performed by a heater, and a blowing means and a blowing path are provided at the bottom of the cleaning tank, and an outlet of the blowing path is provided on an extended line in the longitudinal direction of the heater, and is opened upward from the bottom of the cleaning tank. .
[0016]
This makes it possible to simplify the structure of the blowing means and the structure of the blowing path, reduce the manufacturing cost, reduce the size, and eliminate the drying unevenness by efficiently applying air to the heater.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
The invention according to claim 1 of the present invention is directed to a blower having a fan casing including a blower fan, a blower passage for guiding wind generated by the blower into a washing tank, and the washing provided in the washing tank. A heater for heating the air blown into the tank, wherein the blowing means and the blowing path are provided at the bottom of the cleaning tank, and the outlet of the blowing path is provided on a longitudinal extension of the heater, and the bottom of the cleaning tank is provided. It opens upward from the top, so that the structure of the blower means and the blower path can be simplified, reducing the manufacturing cost, miniaturizing the entire equipment, and efficiently blowing air to the heater to eliminate drying unevenness. Can be.
[0018]
According to a second aspect of the present invention, in the first aspect of the present invention, a cap member for directing the discharged wind to the heater is provided at an outlet of the air blowing path. And it is possible to prevent the washing water from entering the air passage.
[0019]
According to a third aspect of the present invention, in the first aspect of the present invention, the bottom portion of the air passage is provided below the bottom surface of the inner wall of the fan casing. It is possible to make it difficult for the cleaning water to reach the blower, and to prevent damage to the motor that drives the blower fan.
[0020]
According to a fourth aspect of the present invention, in the first or second aspect of the present invention, a heater cover is provided above the heater, and an opening of a cap member provided at an outlet of an air passage is directed downwardly of the heater cover. In addition to being able to efficiently heat the wind with the heater, the wind can be evenly applied to the dishes and uneven drying can be eliminated.
[0021]
According to a fifth aspect of the present invention, there is provided a blower having a fan casing including a blower fan, wherein an inner wall of the fan casing facing the blower fan is formed on a back surface of a cleaning tank, and the cleaning unit faces the blower fan. Since the rib having a predetermined gap with the blower fan is provided on the back surface of the tank, the structure of the blower can be simplified without lowering the blowability of the blower fan.
[0022]
The invention according to claim 6 is the invention according to claim 1 or 5, wherein an intake port is provided in the fan casing, and the intake port is adjacent to a motor for driving the blower fan, and the lower end of the opening is connected to the motor. Since the cleaning water is set below the mounting position of the motor, even if the cleaning water enters the fan case, the cleaning water does not touch the motor that drives the blower fan, and the motor can be prevented from being damaged.
[0023]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Components having the same configuration as the conventional example are denoted by the same reference numerals, and description thereof is omitted.
[0024]
As shown in FIGS. 1 to 3, the washing tub 19 is provided inside the dishwasher / dryer main body 20, and has a water storage unit 21 for storing water supplied inside the washing tub 19. A heater 22 is provided in the water storage section 21 to heat the water stored in the water storage section 21.
[0025]
The blower 23 is provided behind the bottom of the washing tank 19, and includes a fan casing 25 containing a blower fan 24 and a motor 26 for driving the blower fan 24. Here, the blower fan 24 is constituted by a centrifugal fan installed substantially horizontally, and the main plate 24a is on the upper side, and the blades 24b are on the lower side. The motor 26 has a rotation axis substantially vertical at the lower side of the blower fan 24, that is, at the inlet side of the intake air, and is fixed to the fan casing 25 below the fan casing 25 with screws or with a claw provided on the fan casing 25. As a result, the air is cooled by the air sucked by the blower fan 24. The fan casing 25 has a spiral side wall when viewed in a plan view, and its bottom surface is substantially horizontal.
[0026]
The upper surface 27 of the inner wall of the fan casing 25 facing the blower fan 24 is formed by the bottom back surface of the cleaning tank 19, and the lower surface of the bottom of the wash tank 19 facing the main plate 24 a of the blower fan 24 has a predetermined gap with the blower fan 24. Is provided. Although the rib 28 is formed of a substantially cylindrical rib having a diameter equal to or less than the outer diameter of the blower fan 24, the rib 28 does not have to be substantially cylindrical and may have a shape close thereto.
[0027]
The inner bottom portion of the cleaning tank 19 is inclined toward the water storage section 21 so that the cleaning water can easily flow into the water storage section 21, and as a result, the upper side of the main plate 24a of the blower fan 24 installed substantially horizontally and the cleaning tank. A wedge-shaped space 29 is formed between the bottom surface and the bottom surface of the fan 19, but a sealing effect is generated between the lower end of the rib 28 and the upper side of the main plate 24 a of the blower fan 24, which is similar to filling the space 29. effective. The same effect can be obtained by providing a plurality of ribs inside the ribs 28 in a grid or radial pattern, or by connecting the lower ends of the ribs 28 with a plane.
[0028]
If the space 29 is left as it is without providing the ribs 28, the wind generated by the blower fan 24 goes around to the space 29 to cause a turbulence in the airflow, and the blower fan 24 has a lower blowing ability. However, due to the action of the ribs 28, the wind generated by the blower fan 24 does not flow into the wedge-shaped space 29, so that no turbulence of the airflow occurs and the blowability of the blower fan 24 does not decrease. The effect is greater as the gap between the main plate 24a of the blower fan 24 and the rib 28 is smaller, but it is better to set it to about 0.5 to 5 mm in consideration of manufacturing variations.
[0029]
As a result, the upper surface of the inner wall of the fan casing 25 can be formed on the bottom surface of the bottom of the cleaning tank 19 without lowering the blowing capacity of the blowing fan. Further, the position of the fan casing 25 at the bottom of the cleaning tank 19 can be arranged as high as possible while maintaining a substantially horizontal posture.
[0030]
In the present embodiment, the blowing means 23 is provided behind the bottom of the cleaning tank 19, but the blowing means 23 is provided on the back surface of the cleaning tank 19, and the inner wall of the fan casing 25 has a main plate 24 a of the blowing fan 24. The opposing surface may be formed on the back surface of the cleaning tank 19, and a rib 28 having a predetermined gap with the blower fan 24 may be provided. Thereby, the structure of the blower unit 23 can be reduced without reducing the blower capacity of the blower fan 24. It can be simplified and the whole can be downsized.
[0031]
The air generated by the air blowing means 23 passes through an air passage 30 extending forward from the back of the bottom of the washing tank 19, and is provided on an extension of the heater 22 in the longitudinal direction and opened upward from the bottom of the washing tank 19. Is discharged from the outlet 31. The outlet 31 of the air passage 30 is provided above the water level of the water storage unit 21 at the time of washing, and prevents the washing water from entering the inside of the air passage 30. Further, the air passage 30 is provided at the bottom of the washing tank 19 and adjacent to the water storage section 21 and does not protrude to the side of the washing tank 19, so that it is suitable for reducing the size of the dishwasher / dryer body 20.
[0032]
A cap member 32 is provided above the outlet 31 of the air passage 30, and an opening thereof, that is, an exhaust port 33 is directed toward the heater 22. Further, since the exhaust port 33 is provided below the outlet 31 of the air passage 30, the cleaning water is more difficult to enter the air passage 30.
[0033]
The intake port 34 is provided so as to protrude downward from the fan casing 25, and has an arcuate opening in plan view, and the arcuate opening is smaller than the outer diameter of the blower fan 24. ing. The filter 35 is fixed to the lower end of the intake port 34 so as to cover the opening of the intake port 34.
[0034]
The motor 26 for driving the blower fan 24 is inside the intake port 34 when viewed in a plan view, and is adjacent to the intake port 34. The lower end 36 of the opening of the intake port 34, that is, the fixed portion of the filter 35 is provided below the mounting position of the motor 26.
[0035]
The heater cover 37 protects the heater 22 and adjusts the flow of warm air. The heater cover 37 is disposed above the heater 22 so as to cover the heater 22, and the exhaust port 33 is provided below the heater cover 30. . The material of the heater cover 30 may be any of a wire, a sheet metal, and a heat-resistant resin.
[0036]
The operation of the above configuration will be described. When the tableware is placed in the tableware basket 10 and housed in the washing tank 19 and the operation is started, the water supply valve 3 is opened and water is supplied into the washing tank 19 through the water supply path 1. The supplied water is stored in a water storage section 21 in the washing tank 19. When a predetermined water level is detected by the water level sensor 6, the water supply valve 3 is closed to terminate the water supply, and the circulation pump 8 is driven.
[0037]
Thereby, the water stored in the water storage unit 21 is pressurized by the circulation pump 8, is sprayed from the cleaning nozzle 9 toward the tableware in the tableware basket 10 to wash the tableware, and circulates along the path returning to the water storage unit 21. I do. At this time, it is heated by the heater 22 and is heated. When the washing is completed, the water in the washing tank 19 is discharged by the drain pump 11.
[0038]
When the cleaning is completed, the drying process is started, the motor 21 is driven, and the blower fan 24 is rotated. By the rotation of the blower fan 24, air is sucked in from the intake port 34 through the filter 35, and the sucked air is discharged from the exhaust port 33 through the air path 30 and the outlet 31 of the air path 30, The air exhausted in the direction of 22 is heated by the heater 22 to become hot air, dries the tableware arranged in the tableware basket 10, and is discharged outside through the steam port 17.
[0039]
Here, the wind discharged from the exhaust port 33 passes under the heater cover 30 and is heated by the heater 22. Openings are provided in the heater cover 30 everywhere, and serve to uniformly blow air to the dishes in the washing tank 19. Even if the heater cover 30 is not provided, the warm air is discharged along the longitudinal direction of the heater 22, that is, the longitudinal direction of the water storage section 21, so that the heater 22 efficiently heats the heated air.
[0040]
In addition, since the warm air flows in the longitudinal direction of the heater 22, that is, in the direction perpendicular to the steam port 17, the wind exhausted directly from the steam port 17 to the outside is reduced, and the hot air is efficiently applied to the internal tableware. And uneven drying caused by the place where the tableware is arranged can be eliminated.
[0041]
Further, since the air passage 30 is adjacent to the water storage section 21, the water storage section 21 has a partial but double structure, and has a heat retaining effect of the heated cleaning water during cleaning.
[0042]
Next, as described above, the outlet 31 of the air passage 30 is provided above the water level of the water storage unit 21 at the time of washing to prevent the washing water from entering the inside of the air passage 30. Assuming that the washing water has entered the passage 30, most of the bottom surface of the air passage 30 is provided below the lower surface 38 of the inner wall of the fan casing 25, whereby a large amount of the washing water that has entered can be stored. The washing water hardly enters the inside of the casing 25.
[0043]
Further, the position of the fan casing 25 at the bottom of the cleaning tank 19 is as high as possible and the effect of the cap member 32 makes it more difficult for the cleaning water to reach the fan casing 25.
[0044]
Further, since the opening lower end portion 36 of the intake port 34 provided to protrude downward from the fan casing 25 is provided below the mounting position of the motor 26, the washing water entering from the exhaust port 33 may If the water reaches the fan casing 25 without completely storing water at the bottom of the motor 26, the water is discharged from the intake port 34 below the mounting position of the motor 26, so that the motor 26 does not come into contact with water and the motor is not damaged. The washing water that has entered due to the influence of the filter 35 is not necessarily discharged vertically downward from the intake port 34, but the motor 26 does not get wet because the lower end 36 of the opening is below the mounting position of the motor.
[0045]
Generally, in the case of a motor in which the stator is exposed, such as a shaded coil motor, the opening lower end portion 36 may be provided below the stator. The filter 35 fixed to the opening lower end 36 is generally provided with a fixing allowance larger than the opening shape of the opening lower end 36. When the motor 26 is attached to the fan casing 25, the fixing allowance is If it is kept in contact with, it may get wet with the entered cleaning water, but according to the present embodiment, such a thing is unlikely to occur.
[0046]
As described above, according to the present embodiment, the blowing means 23 and the blowing path 30 are provided at the bottom of the cleaning tank 19, and the outlet 31 of the blowing path 30 is provided on an extension of the heater 22 in the longitudinal direction. Since the opening is opened upward, the structure of the blowing means 23 and thus the blowing path 30 can be simplified, the manufacturing cost can be reduced, and the entire apparatus can be downsized. Can be eliminated.
[0047]
In addition, since the cap member 32 for directing the discharged air to the heater 22 is provided at the outlet 31 of the air passage 30, the air can be more efficiently applied to the heater 22 by the cap member 32, and the cleaning water is supplied to the air passage 30. Can be prevented from invading.
[0048]
In addition, since the bottom of the air passage 30 is provided below the bottom surface of the inner wall of the fan casing 25, when the washing water enters the air passage 30, it is difficult for the washing water to reach the air blowing means 23, The motor 26 that drives the fan 24 can be prevented from being damaged.
[0049]
Further, since the heater cover 37 is provided above the heater 22, and the opening of the cap member 32 provided at the outlet 31 of the air passage 30, that is, the exhaust port 33 is directed below the heater cover 37, the heater 22 efficiently supplies air. Not only can be heated, but also the dishes can be evenly blown, and uneven drying can be eliminated.
[0050]
In addition, the inner wall of the fan casing 25 facing the blower fan 24 is formed on the back surface of the cleaning tank 19, and a rib 28 having a predetermined gap with the blower fan 24 is provided on the back surface of the cleaning tank 19 facing the blower fan 24. Therefore, the structure of the blowing means 23 can be simplified without reducing the blowing capacity of the blowing fan 24.
[0051]
In addition, an intake port 34 is provided in the fan casing 25, and the intake port 34 is adjacent to the motor 26 for driving the blower fan 24, and the lower end 36 of the opening is set below the mounting position of the motor 26. Even if the water enters the fan case 25, the cleaning water does not touch the motor 26 that drives the blower fan 24, and the motor 26 can be prevented from being damaged.
[0052]
【The invention's effect】
As described above, according to the first aspect of the present invention, the air generated by the air blowing means is guided into the cleaning tank through the air passage, and the air blown into the cleaning tank is provided in the cleaning tank. By providing a blowing means and a blowing path at the bottom of the washing tank, providing an outlet of the blowing path on a longitudinal extension of the heater, and opening upward from the bottom of the washing tank to blow air. Means and, by extension, the structure of the air passage can be simplified, the manufacturing cost can be reduced, the size can be reduced, and the air can be efficiently applied to the heater to prevent drying unevenness.
[Brief description of the drawings]
FIG.
FIG. 2 is a vertical sectional view of a dishwasher according to an embodiment of the present invention.
Cross section of the dishwasher [Figure 3]
Vertical sectional view of the dishwasher [Figure 4]
Longitudinal sectional view of a conventional dishwasher / dryer [Fig. 5]
Vertical sectional view of the dishwasher
19 cleaning tank 22 heater 23 blowing means 24 blowing fan 25 fan casing 30 blowing path 31 outlet

Claims (6)

A blower having a fan casing including a blower fan, a blower path for guiding wind generated by the blower into the cleaning tank, and a heater provided in the cleaning tank and heating the wind blown into the cleaning tank. A dishwasher / dryer provided with the blowing means and the blowing path at the bottom of the washing tank, and the outlet of the blowing path provided on an extension of the heater in the longitudinal direction, and opening upward from the bottom of the washing tank. The dishwasher / dryer according to claim 1, further comprising a cap member provided at an outlet of the air passage to direct the discharged air to the heater. The dishwasher / dryer according to claim 1, wherein a bottom portion of the air passage is provided below a bottom surface of an inner wall of the fan casing. 3. The dishwasher / dryer according to claim 1, wherein a heater cover is provided above the heater, and an opening of a cap member provided at an outlet of the air passage is directed downward of the heater cover. A blower having a fan casing including a blower fan is provided, and an inner wall of the fan casing facing the blower fan is formed on a back surface of the cleaning tank, and a blower fan and a predetermined surface are formed on a back surface of the wash tank facing the blower fan. Dishwasher and dryer with ribs with gaps. 6. The dishwasher / dryer according to claim 1, wherein an intake port is provided in the fan casing, and the intake port is adjacent to the motor, and a lower end of the opening is set below a mounting position of the motor.

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