JP3196268B2 - dishwasher - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a dishwasher having heater safety means.

[0002]

2. Description of the Related Art In recent years, there has been a strong demand for safety in dishwasher heaters.

[0003] A conventional dishwasher will be described below. FIG. 3 shows the configuration of a conventional dishwasher.
In FIG. 3, reference numeral 1 denotes a washing tank for storing tableware 2 therein and storing washing water at the bottom, and 3 is disposed at an inner bottom of the washing tank 1.
A washing nozzle 4 that is rotatable and ejects washing water toward the tableware 2 is a washing pump that sends washing water to the washing nozzle 3, and the washing pump 4 is driven by a motor 5. Reference numeral 6 denotes a heater disposed at the bottom of the cleaning tank 1 for heating the cleaning water. Reference numeral 7 denotes a blower fan for sending outside air into the washing tank 1. The outside air is sent into the washing tank 1 through a casing 8, and is discharged from the exhaust port 9 to the outside.

[0004] The relationship between the components and the operation of the dishwasher comprising the above components will be described below. When the user places the tableware 2 in the basket 10, stores it in the washing tank 1, puts in the detergent, and starts the operation, first,
A predetermined amount of tap water is supplied to the bottom of the cleaning tank 1. Then, the motor 5 and the heater 6 are energized, and the washing water is spouted from the washing nozzle 3 toward the tableware 2 by the washing pump 4 while being heated. When the temperature of the cleaning water reaches a predetermined temperature and a predetermined time has elapsed from the start of the cleaning, the cleaning process ends and the cleaning water is once drained. Next, tap water is newly supplied, and the same operation as in the above-described washing step is performed for several minutes to drain water. After repeating this rinsing step several times, the same operation as the washing step called a heating rinsing step is performed, and when the temperature reaches a predetermined temperature, the operation is finished and drained. Finally, in the drying step, the blower fan 7 is operated to discharge the steam in the cleaning tank 1 to the outside of the apparatus, and at the same time, the heater 6 is intermittently energized to heat the tableware 2 to dry the attached water droplets. It is.

[0005]

However, in the above-mentioned conventional configuration, since the heater 6 is exposed at the bottom of the cleaning tank 1, the small plastic tableware 2 drops on the heater 6 which has become hot during the drying process. In this case, there is a problem of dissolution and odor of the tableware 2. Further, there is a problem that, when the heater 6 is immediately touched with the hand after the operation, the user gets burned and gets in the way when the inside of the cleaning tank 1 is cleaned.

An object of the present invention is to solve the above-mentioned conventional problems and to provide a highly safe dishwasher that does not expose a heater.

[0007]

In order to achieve this object, a dishwasher according to the present invention is provided with a heater which is provided on an outer wall of a washing tank with a casing, and the casing is provided with the blower fan.
An intake path that guides the air sent by the fan into the cleaning tank
And also sent by the washing pump
Cleaning water that comes into direct contact with the heater and sent into the cleaning tank.
The casing also functions as a part of the circulation path into which the casing flows , so that the casing also has a structure also serving as a part of the circulation path of the washing water and the part of the intake path of the blower fan.

[0008]

In this configuration, during the cleaning process, the cleaning water jetted from the cleaning pump circulates through the casing and is heated by the heater to become hot water. In the drying step, outside air is sent into the casing by a blower fan, heated by the heater to become hot air, dries tableware disposed in the washing tank, and discharges generated steam to the outside of the machine. Also, since the heater is not exposed in the cleaning tank,
Even if small plastic tableware falls from the tableware basket during the drying process, there is no danger of melting and odor of the tableware. Furthermore, immediately after the operation is completed, there is no danger of burns if the heater is touched immediately, and the inside of the cleaning tank is refreshed,
It does not get in the way when cleaning.

[0009]

An embodiment of the present invention will be described below with reference to the drawings. The same components as those in the conventional example are denoted by the same reference numerals, and description thereof is omitted.

As shown in FIGS. 1 and 2, a heater 11 disposed on the outer wall of the cleaning tank 1 and heating the cleaning water is covered by a casing 12. A discharge port 13 is provided at a lower portion of the casing 12, and is connected to a branch port 15 of the cleaning pump 4 by a connection pipe 14. Also, the casing 1
An overflow port 16 is provided at an upper portion of the cleaning tank 1, and is connected to a discharge port 18 of the cleaning tank 1 by a duct 17. In addition, an intake port 19 is provided at an upper portion of the casing 12, and is connected to the blower fan 7 that sends outside air into the cleaning tank 1.
And is discharged from the exhaust port 9 to the outside of the machine.

The operation of the dishwasher configured as described above will be described with reference to FIGS. During the washing process, washing water spouted from the washing pump 4 is spouted from the washing nozzle 3 to wash the dishes 2 placed on the tableware basket 10, and also guided into the casing 12 from the branch port 15, and the heater The casing 12 forms a circulation path by overflowing from the overflow port 16 while being heated by 11 and circulating from the discharge port 18 to the cleaning tank 1.
Have . The washing water spouted from the washing pump 4 directly hits the tableware 2 to remove dirt,
The cleaning process is performed in two systems, that is, a heating system and a circulating water flow. Next, in the drying process, the cleaning tank 1
The cleaning water in the casing 12 is discharged outside the machine and the cleaning pump 4 is also stopped, so that the cleaning water in the casing 12 flows out from the discharge port 13. In this state, the outside air is blown into the casing 12 from the air inlet 19 by the blower fan 7 and is heated by the heater 11 to become hot air.
It is fed from 6 through a duct 17 to a discharge port 18. The hot air dries the dishes 2 arranged in the washing tank 1 and discharges the generated steam to the outside through the exhaust port 9.

As described above, according to the present embodiment, the washing water is circulated in the casing 12 during the washing step, and the air from the blower fan 7 is sent through the casing 12 during the drying step, so that the heater 11 is cooled. Even if covered with 12, the functions of washing and drying can be achieved. Further, since the heater 11 is covered with the casing 12 and is not exposed in the cleaning tank 1, even if the small plastic tableware 2 falls from the tableware basket 10 during the drying process, the heater 2 may dissolve and emit odor. There is no danger. Furthermore, there is no danger of burns if the heater 11 is touched immediately after the operation, and the inside of the cleaning tank 1 is clear and does not hinder the cleaning.

[0013]

As is apparent from the above description of the embodiment, in the present invention, since the heater is provided by covering the outer wall of the cleaning tank with the casing, the heater is not exposed in the cleaning tank. Even if small plastic tableware falls from the tableware basket during the drying process, there is no danger of the tableware melting or odor. Furthermore, there is no danger of burns if the heater is touched immediately after the operation is completed, and the inside of the washing tub is made clear, and a highly safe dishwasher that does not interfere with cleaning can be realized.

[Brief description of the drawings]

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

FIG. 2 is a sectional view of a heater of the dishwasher.

FIG. 3 is a sectional view of a conventional dishwasher.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cleaning tank 4 Cleaning pump 7 Blow fan 11 Heater 12 Casing

Claims (1)

(57) [Claims] 1. A cleaning tank, a cleaning pump for jetting cleaning water, a blower fan for feeding outside air into the cleaning tank, and a heater for heating the cleaning water, wherein the heater is an outer wall of the cleaning tank. a, provided is covered with a casing, the casings
Blows the air blown by the blower fan into the cleaning tank.
The washing pump, which also serves as a part of the suction path to be guided
The cleaning water sent by the heater directly into the heater
And also serves as a part of the circulation path for feeding into the cleaning tank
The dishwasher.