JP2002282193A - Dishwasher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dishwasher in which high temperature and high humidity air inside a washing tub is prevented from flowing backward into an air blowing duct, and dew condensation inside the air blowing duct is suppressed even when the high temperature and high humidity air enters the air blowing duct. SOLUTION: In the dishwasher provided with a washing tub 2 for storing a dish basket 4 loaded with dishes, washing pump 6 for forcibly feeding washing water which is supplied into the washing tub 2, with pressure, cooling fan 7 for cooling the washing pump 6, drying fan 8 for generating airflow for drying the dishes, air hole 10 for blowing the airflow into the washing tub 2 and air blowing duct 9 communicated from the drying fan 8 to the air hole 10, by providing a partition wall between the cooling fan 7 and the drying fan 8, even when the cooling fan 7 is driven, a pressure at a place close to the drying fan 8 does not become negative and the high temperature and high humidity air inside the washing tub 2 can be prevented from flowing backward into the air blowing duct 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwasher for washing dishes.

[0002]

2. Description of the Related Art An example of a conventional dishwasher is shown in FIGS. 5 and 6, and its structure will be described below. Cleaning tank 2
The tableware basket 4 is provided inside, and the tableware is placed and stored. The cleaning water stored in the cleaning tank 2 is heated by the hot water heater 12 and sent to the cleaning nozzle 5 by the cleaning pump 6 under pressure.
The tableware placed in the tableware basket 4 is washed. During dishwashing, the washing pump 6 generates heat and is cooled by the cooling fan 7. After washing the dishes, the air generated from the drying fan 8 is heated by the hot air heater 11 and
Then, the tableware blown out to the blower opening 10 and placed on the tableware basket 4 is dried.

[0003]

In the conventional dishwasher, the cooling fan 7 and the drying fan 8 are fixed close to each other, and when the drying fan 8 is located on the suction side of the cooling fan 7, the cooling fan 7 Since the pressure near the intake port of the drying fan 8 becomes negative when the drive 7 is performed, the high-temperature and high-humidity air in the cleaning tank 2 is sucked from the ventilation port 10 and, depending on the use environment, condensed in the ventilation duct 9 to cause water leakage and hot air heater. No. 11 had a defect such as corrosion. Further, even in a state where the cooling fan 7 is not affected, the high-temperature and high-humidity air in the cleaning tank 2 infiltrates into the ventilation duct 9 and forms dew. There was something to do.

According to the present invention, in a dishwasher, high-temperature and high-humidity air in the washing tank 2 is prevented from entering the ventilation duct 9 and air is blown even if high-temperature and high-humidity air enters the ventilation duct 9. An object of the present invention is to provide a dishwasher capable of suppressing dew condensation in the duct 9.

[0005]

Means for Solving the Problems and Effects In order to achieve the above object, according to the first aspect, a washing tank for accommodating a dish basket on which tableware is placed, an exterior covering the washing tank, and A cleaning pump that pumps the supplied cleaning water, a cooling fan that cools the cleaning pump, a drying fan that generates wind for drying dishes, an air outlet that blows air into the cleaning tank, and air that is blown from the drying fan In a dishwasher with a ventilation duct that communicates to the mouth and an exhaust port that exhausts the air blown into the washing tank, the cooling fan is driven by providing a partition between the cooling fan and the drying fan. Even if the pressure near the drying fan does not become negative, the high-temperature and high-humidity air in the cleaning tank is prevented from flowing back into the ventilation duct, and as a result, dew condensation in the ventilation duct can be prevented.

According to the second aspect, the partition between the cooling fan and the drying fan is formed integrally with the cleaning tank, so that the partition can be provided without using a separate fixing means.
It is possible to simplify the assemblability of the dishwasher and to reduce the manufacturing cost.

According to the third aspect of the present invention, the partition wall between the cooling fan and the drying fan is formed integrally with the exterior, so that the partition wall can be provided without using a separate fixing means. The simplification and the cost reduction in manufacturing can be achieved.

According to the fourth aspect of the present invention, since the blower duct is fixed in contact with the outer wall of the washing tank and not in contact with the inner wall of the exterior, heat in the washing tank is easily transmitted to the blower duct, and the outside air temperature is reduced. The temperature in the ventilation duct can be kept close to the temperature in the washing tank. As a result, even when high-temperature and high-humidity air in the cleaning tank flows back into the ventilation duct, dew condensation in the ventilation duct can be prevented.

According to a fifth aspect of the present invention, since the heat insulating means is provided between the air duct and the exterior, the air duct is further less affected by the outside air temperature, and dew condensation in the air duct is more effectively prevented. be able to.

According to the present invention, since the blow duct is formed of a hydrophilic material, dew condensation in the blow duct is prevented, water drops hardly remain in the blow duct, and the moisture in the blow duct is reduced by the drying fan. Can be dried in a short time.

According to a seventh aspect of the present invention, since the inner surface of the air duct is subjected to a hydrophilic treatment, dew condensation in the air duct is prevented, water droplets hardly remain in the air duct, and moisture in the air duct is reduced by the drying fan. Can be dried in a short time.

In the eighth aspect, since the exhaust port is formed of a hydrophilic material, dew condensation at the exhaust port is prevented, water droplets hardly adhere to the exhaust port, and dew water is exhausted by wind pressure during drying. Spouting from the mouth can be prevented.

According to the ninth aspect, since the inner surface of the exhaust port is subjected to a hydrophilic treatment, dew condensation at the exhaust port is prevented, water droplets hardly adhere to the exhaust port, and dew water is exhausted by wind pressure during drying. Spouting from the mouth can be prevented.

According to a tenth aspect of the present invention, a plurality of irregularities are provided on the inner surface of the blower duct to increase the surface area of the inner surface of the blower duct, so that when dew condensation occurs in the blower duct,
It is possible to prevent water droplets in the ventilation duct from dripping and accumulating in the lower part of the ventilation duct, and to dry the moisture in the ventilation duct with the drying fan in a short time.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. The dishwasher has an exterior 1 as shown in FIG.
The washing tank 2 is built in the inside, and two doors 3 are provided on the front. The upper and lower tableware baskets 4 are installed in the washing tank 2 so that they can be freely inserted and removed. The four cleaning nozzles 5 are arranged vertically, horizontally, and horizontally. FIG. 2, FIG.
As shown in FIG. 2, a cleaning pump 6 for pumping cleaning water to a cleaning nozzle 5 is provided on the bottom rear surface of the cleaning tank 2.
Cooling fan 7 for suppressing heat generation when cleaning pump 6 is driven
Is attached to the motor rotation shaft in the cleaning pump 6.
A drying fan 8 is provided near the cleaning pump 6, and a ventilation duct 9 communicates with a ventilation port 10 provided on a side surface of the cleaning tank 2. The ventilation duct 9 is located between the exterior 1 and the cleaning tank 2 and has a structure in which the ventilation duct 9 is once raised above the ventilation port 10 in order to prevent a backflow of the cleaning water. A hot air heater 11 is provided near the outlet of the drying fan 8 in the air duct 9.

At the time of washing the dishes, the cooling fan 7 is driven in conjunction with the driving of the washing pump 6, and as a result, the suction side of the cooling fan 7 becomes a negative pressure. However, since the partition 13 is provided between the drying fan 8 and the cooling fan 7, it is possible to prevent the vicinity of the suction port of the drying fan 8 from becoming negative pressure when the cooling fan 7 is driven. The hot and humid air can be prevented from flowing backward from the blower opening 10 into the blower duct 9.

At the time of washing dishes, the air in the washing tank 2 becomes hot and humid, so that the air duct 9 near the air outlet 10 is always exposed to hot and humid air. In order to prevent the high-temperature and high-humidity air from cooling rapidly in the air duct 9 to form dew, the air duct 9 is in contact with the outer wall of the cleaning tank 2 and is fixed away from the exterior 1. As a result, the air duct 9 can be maintained at a temperature close to the temperature in the washing tank 2, and dew condensation in the air duct 9 during dishwashing can be prevented. Further, a heat insulating material 14 is provided between the air duct 10 and the exterior 1.
By sandwiching it, it can be less affected by the outside temperature.

Further, since the air duct 9 is formed of a hydrophilic material so that dew condensation does not occur in the air duct 9 when the air duct 9 is cooled by the outside air temperature.
Dew condensation in the air duct 9 can be prevented. Even if a hydrophilic agent is applied to the inner wall of the air duct 9, the same effect can be obtained. In the event that dew forms in the air duct 9, the water may enter the concave and convex recesses provided on the inner wall of the air duct 9, making it difficult for the water to drop to the lower part of the air duct 9, thereby causing a risk of water leakage. Is reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a dishwasher according to an embodiment of the present invention.

FIG. 2 is a lower perspective view of the dishwasher according to the embodiment of the present invention when the exterior is removed.

FIG. 3 is a schematic bottom view of the dishwasher according to the embodiment of the present invention when the exterior is removed.

FIG. 4 is a schematic sectional view of an air duct of a dishwasher according to the embodiment of the present invention.

FIG. 5 is a bottom perspective view of the conventional dishwasher when the exterior is removed.

FIG. 6 is a schematic bottom view when the exterior of a conventional dishwasher is removed.

[Explanation of symbols]

1 ... exterior, 2 ... washing tank, 3 ... door, 4 ... tableware basket,
5 cleaning nozzle, 6 cleaning pump, 7 cooling fan, 8 drying fan, 9 blower duct, 10 blower outlet, 11 hot air heater, 12 hot water heater, 13 ...
Partition wall, 14: heat insulating material, 15: exhaust port

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroshi Horiuchi 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka Tochiki Kiki Co., Ltd. (72) Inventor Hiroyuki Sudo 2 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka 1-chome F-term (reference) in TOTO Kiki Co., Ltd. 3B082 BE00 EE01 EE02

Claims (10)

[Claims] 1. A washing tank for accommodating a dish basket on which tableware is placed, an exterior covering the washing tank, a washing pump for pumping washing water supplied into the washing tank, and cooling the washing pump. A cooling fan, a drying fan that generates wind for drying dishes, a blowing port that blows air into the cleaning tank, a blowing duct that communicates from the drying fan to the blowing port, and A dishwasher provided with an exhaust port for exhausting the blown air, wherein a partition is provided between the cooling fan and the drying fan. 2. The dishwasher according to claim 1, wherein a partition wall between the cooling fan and the drying fan is formed integrally with the washing tank. 3. The dishwasher according to claim 1, wherein a partition wall between the cooling fan and the drying fan is formed integrally with the exterior. 4. In order to prevent washing water in the vicinity of the blower opening from flowing back into the blower duct, the blower duct is once raised above the blower opening mounting position and is then moved from the drying fan to the blower outlet. And the ventilation duct is located between the cleaning tank and the exterior, and the ventilation duct is in contact with the outer wall of the cleaning vessel and is in contact with the inner wall of the exterior. A dishwasher characterized in that it is fixed without a dishwasher. 5. The dishwasher according to claim 3, wherein a heat insulating means is provided between the ventilation duct and the exterior. 6. The dishwasher according to claim 3, wherein said ventilation duct is made of a hydrophilic material. 7. The dishwasher according to claim 3, wherein an inner surface of the air duct is subjected to a hydrophilic treatment. 8. The dishwasher according to claim 3, wherein the exhaust port is made of a hydrophilic material. 9. The dishwasher according to claim 3, wherein a hydrophilic treatment is applied to an inner surface of the exhaust port. 10. The dishwasher according to claim 3, wherein a plurality of irregularities are provided on an inner surface of the blower duct to increase a surface area of the inner surface of the blower duct.