JPH10216065A - Dishwasher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To early detect the occurrence of trouble in the case of the appearance of a smoke from a bulking agent by concealing a heater with a heater cover except for the bulking agent, regarding an appliance with a heater mounted outside a dish storage tank via a bulking for increasing the heat conduction and adhesion of the heater. SOLUTION: This dishwasher has a heater cover 13 laid behind a dish storage tank 3, so as to envelope a heater 12, and the air warmed with the heater 12 is fed to the dish storage tank 3 via an air supply passage 25 connected to the opening of the cover 13. Water droplets adhering to a dish are thereby changed to vapors and discharged through an exhaust duct. Also, space between the heater 12 and a heater mounting part 3b is filled with a bulking agent 26, so as to increase the heat conduction and adhesion of the heater 12. In this case, by removing the bulking agent 26 the heater 12 is covered with the heater cover 13, so that a smoke, if any, from the bulking agent 26 due to the abnormal overheat of the heater 12 is immediately recognized visually as well as an olfactory manner.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a dishwasher,
More specifically, the present invention relates to a heater mounting structure.

[0002]

2. Description of the Related Art Conventionally, as an example of a heater mounting structure in a dishwasher, as shown in FIG. 6, a curved heater mounting portion 3b is located outside a tableware storage tank 3 and has a back surface.
The heater 12 is attached to the tableware storage tank 3 via a heater attachment piece 27. Between the heater 12 and the heater attachment portion 3b, for example, silicon, Some are filled with other fillers 26.

[0003] In the drawing, reference numeral 25 denotes an air passage connected to the opening of the heater cover 13.
The warmed air is supplied into the tableware storage tank 3.

[0004] Reference numeral 28 denotes a heat insulating material provided between the heater cover 13 and the tableware storage tank 3.

In some cases, the heater 12 and the heater cover 13 are located outside the tableware storage tank 3 and attached to the bottom surface thereof.

[0006]

In the above-mentioned prior art, the heater 12 has a heater mounting piece 27.
And the outside of the heater mounting piece 27 to which the heater 12 is mounted is covered with the heater cover 13, so that the heater 12 abnormally overheats and the space between the heater 12 and the heater mounting portion 3 b is generated. When smoke is emitted from the filler 26, smoke enters the inside of the tableware storage tank 3 through the ventilation passage 25 connected to the opening of the heater cover 13, and then the exhaust gas connected to the exhaust duct of the tableware storage tank 3. It takes time to find out if the dishwasher has trouble, such as knowing that the dishwasher is having trouble only after smoke comes out of the mouth, and the damage is greater.

[0007] The main object of the present invention is to detect the occurrence of a trouble earlier than in the past and to cause damage if the heater abnormally overheats and emits smoke from the filler between the heater and the heater mounting portion. It is an object of the present invention to provide a dishwasher which can be kept as small as possible.

[0008] Other effects achieved by the present invention besides the main purpose will be described together with the following embodiments.

[0009]

The main object of the present invention is to attach the heater to the outside of the tableware storage tank via a filler which enhances the heat conductivity and adhesion of the heater, and to communicate between the heater cover and the tableware storage tank. This is achieved by covering the heater with a heater cover except for the filler.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing the overall appearance of a dishwasher, and FIG. 2 shows the internal structure of the dishwasher shown in FIG. FIG. 3 is a longitudinal sectional side view of the dishwasher shown in FIG. 1 in which a portion different from FIG. 2 is cut, and FIG. 4 is a view showing a main part (a dishwasher heater mounting portion) showing one embodiment of the present invention. FIG. 5 is a detailed view of a part A in FIG.

1 to 3, reference numeral 1 generally denotes a dishwasher. The dishwasher 1 has a box-shaped outer frame 2. A tableware storage tank 3 is arranged in the outer frame 2, and a door 4 is provided at an opening on the front surface thereof. At the lower part of the side wall of the tableware storage tank 3, a step portion 3a is provided, and the tableware lower basket 5 is detachably disposed on the step portion 3a.

A rail 6 that can move forward and backward is attached to the upper part of the side wall of the tableware storage tank 3. By inserting a tableware storage basket 7 into the rail 6, the tableware storage basket 7 can be freely taken in and out. can do.

As shown in FIG. 2, a water supply pump 8 is disposed below the tableware storage tank 3.
It has a pump motor 9. Immediately below the tableware storing lower basket 5, a lower arm nozzle 1 that rotates around a central portion as a fulcrum
0, and on the upper surface of the lower arm nozzle 10,
A plurality of small holes 10a are provided. The lower basket 5 for storing tableware is provided with a bencherie pipe 11 b for sending the washing water supplied by the water supply pump 8 to the upper arm nozzle 11. An upper arm nozzle 11 that rotates about the central portion of the upper arm nozzle 11 directly below the tableware storage basket 7.
Are provided, and a plurality of small holes 11 a are provided on the upper surface of the upper arm nozzle 11.

As shown in FIG. 3, a heater cover 13 is arranged on the back of the tableware storage tank 3 so as to surround the heater 12. On the back of the tableware storage tank 3, in addition to the heater 12, a water supply solenoid valve 14 is arranged.

An exhaust duct 15 is provided above the tableware storage tank 3.
Are arranged, and the exhaust duct 15 is connected to the exhaust port 16. Above the door 4, the control panel 1
7 are arranged.

A water supply pump 18 shown in FIG. 2 is arranged below the tableware storage tank 3 in addition to the water supply pump 8.

The operation of washing, rinsing with water, rinsing with warm water and drying of the dishwasher 1 having the above configuration will now be described.

First, in the washing operation, the water supply solenoid valve 14 is energized, washing water is supplied to the tableware storage tank 3, and the heater 12 is energized to energize the pump motor 9 to rotate the cleaning runner 20. Then, water is sucked in from the water reservoir 21 arranged at the bottom of the tableware storage tank 3, the inside of the lower arm nozzle 10 from the pump discharge port 22, and the bench eerie pipe 11 b
Is supplied to the upper arm nozzle 11 from the bench Erie pipe 11b. Then, pressurized water is directly sprayed from the small holes 10a of the lower arm nozzle 10 to the dishes in the dish storage lower basket 5, and the pressure water is sprayed from the small holes 11a of the upper arm nozzle 11 to the dishes in the dish storage upper basket 7. Is directly sprayed to peel and disperse the dirt attached thereto. At this time, the pressurized water from the lower arm nozzle 10 and the upper arm nozzle 11 is sprayed over the entire area in the tableware storage tank 3. When the cleaning has been performed for a certain period of time, the energization of the pump motor 9 and the heater 12 is stopped to terminate the cleaning operation, and the drainage pump 18 is energized to discharge the washing water in the tableware storage tank 3 out of the machine. .

Next, the rinsing operation is performed by repeating the same operation as the cleaning operation several times. At this time, the heater 1
The power supply to 2 is performed only in the warm water rinsing operation, and is not performed in other rinsing operations.

Finally, in the drying operation, the blower unit 19 is energized to rotate the blower fan 23, and the tableware storage tank is passed through the blower duct 24, the heater 12 and the blower passage 25 arranged below the tableware storage tank 3. Blow inside 3. At this time, the heater 12 is turned on and off for a certain period of time to change the cold air into the hot air, and the hot air causes the water droplets and the residual water adhering in the tableware storage tank 3 to be discharged. Water drops adhering to tableware stored in the tableware storage lower basket 5 and the tableware storage upper basket 7 are converted into steam, and discharged to the outside of the machine via the exhaust duct 15 and the exhaust port 16.

When the drying operation has been performed for a certain period of time, the operation of the dishwasher 1 ends.

In the above-described conventional dishwasher, as described above, the heater 12 shown in FIG.
2 is covered with the heater cover 13 so that the heater 12
Is abnormally overheated and emits smoke from the filler 26 between the heater 12 and the heater mounting portion 3b, the smoke enters the tableware storage tank 3 through the ventilation passage 25 connected to the opening of the heater cover 13. After that, it takes time to find out that the dishwasher has trouble, such as knowing that a problem has occurred in the dishwasher only after smoke comes out from the exhaust port connected to the exhaust duct of the dishware storage tank 3. Becomes larger.

On the other hand, according to the present invention, as shown in FIG. 4, by covering the heater 12 with the heater cover 13 except for the filler 26, the heater 12 may be overheated due to abnormal heating. When smoke is emitted from the filler 26 between the heater mounting portion 3b and the smoke, the smoke enters the tableware storage tank 3 through the ventilation passage 25 connected to the opening of the heater cover 13 as in the related art. Instead, it is recognized visually and olfactory immediately after the smoke is generated, and trouble occurs in the dishwasher only when smoke comes out from the exhaust port connected to the exhaust duct of the tableware storage tank 3 as in the conventional case. It takes time to find out the troubles in the dishwasher, eliminating problems that cause serious damage, detecting trouble occurrences earlier than before, and minimizing the damage as much as possible. You can stop General Domel.

In the illustrated embodiment, a nut 29 is welded to the heater mounting portion 3b of the tableware storage tank 3, the heater 12 is mounted on the nut 29, and the bolt 31 is inserted through the nut 29 to which the heater 12 is mounted. The heater 12 is directly attached to the heater mounting portion 3b of the tableware storage tank 3 by the bolts 31 and the nuts 29.
2 is directly attached to the heater mounting portion 3b of the tableware storage tank 3, so that the heater 12 and the heater mounting portion 3b of the tableware storage tank 3 are mounted.
The adhesiveness with the filler is increased, and the coating thickness of the filler 26 can be reduced in a small amount, which is economical.

As shown in the embodiment shown in FIG.
2 and an insulating piece 30 (30a, 30)
If b) is interposed, the heater 12 and the tableware storage tank 3 have an insulating structure, and there is no danger of electric shock even when the heater 12 is short-circuited.

Further, a protrusion 12a is provided on the outer peripheral portion of the heater 12.
Is provided, and the heater 12 and the heater cover 13 are combined and integrally attached via the projection 12a,
Unlike the conventional example shown in FIG. 6, the number of parts can be reduced without the need for the heater mounting piece 27 and the heat insulating material 28, and a dishwasher that is inexpensive can be obtained.

[0027]

As described above, according to the present invention, the heater is attached to the outside of the tableware storage via a filler for improving the heat conductivity and adhesion of the heater, and has a ventilation passage communicating between the heater cover and the tableware storage tank. In a dishwasher, by covering the heater with a heater cover except for the filler, if the heater abnormally overheats and emits smoke from the filler between the heater and the heater mounting portion, this smoke is generated by a conventional method. It does not invade the inside of the tableware storage tank through the ventilation passage connected to the opening of the heater cover as in
Immediately after smoking, it is visually and olfactoryly recognized, and it is assumed that trouble occurs in the dishwasher only when smoke comes out from the exhaust port connected to the exhaust duct of the dish storage tank as in the past. As it is known, it takes a long time to find a trouble in the dishwasher, which eliminates a problem that causes a large damage, detects a trouble occurrence earlier than before, and keeps the damage as small as possible.

Further, as shown in the illustrated embodiment, by directly attaching the heater to the heater mounting portion of the tableware storage tank, the adhesion between the heater and the heater mounting portion of the tableware storage tank is enhanced.
It is economical because a small amount of filler can be applied.

Further, if an insulating piece is interposed between the heater and the nut, the heater and the tableware storage tank have an insulating structure, and there is no danger of electric shock even when the heater is short-circuited.

Further, a protrusion is provided on the outer peripheral portion of the heater, and the heater and the heater cover are combined and integrally mounted via the protrusion, thereby providing a heater mounting piece and a heat insulating member as in the conventional example shown in FIG. It is possible to reduce the number of parts without using any materials, and to obtain a dishwasher that is inexpensive.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the overall appearance of a dishwasher.

FIG. 2 is a vertical sectional side view showing the internal structure of the dishwasher shown in FIG.

FIG. 3 is a vertical sectional side view of the dishwasher shown in FIG. 1 in which a portion different from FIG. 2 is cut;

FIG. 4 is a partial vertical side view of a main part (dishwasher heater mounting part) showing an embodiment of the present invention.

FIG. 5 is a detailed view of a portion A in FIG. 4;

FIG. 6 is a partially longitudinal side view showing an example of a mounting structure of a conventional dishwasher heater.

[Explanation of symbols]

3: tableware storage tank, 12: heater, 12a: alignment projection, 13: heater cover, 25: ventilation passage, 26: silicone filler, 29: nut, 30 (30a, 30b) ...
Insulating piece, 31 ... bolt.

Claims (6)

[Claims] 1. A tableware storage tank, a main body constituting an outer shell which covers the tableware storage tank from outside, a pressurized water supply means for washing dishes, a heater for converting water to hot water, and A drain pump for discharging the washing water outside the machine,
The apparatus further includes a control device for performing each step of washing, rinsing, and rinsing with hot water, and the heater is attached to the outside of the tableware storage tank via a filler that enhances heat conductivity and adhesion, and a heater cover and tableware are provided. A dishwasher having a ventilation passage communicating between storage tanks, wherein the heater is covered with a heater cover except for the filler. 2. A tableware storage tank, a main body constituting an outer shell that covers the tableware storage tank from the outside, a pressurized water supply means for washing dishes, changing water to hot water, and controlling the temperature in the tableware storage tank. A heater for raising, and a drainage pump for discharging washing water in the tableware storage tank to the outside of the machine, for washing tableware,
A control device for performing each of the steps of water rinsing, hot water rinsing, and drying; and a control device for performing each of the dishwashing, water rinsing, hot water rinsing, and drying steps,
In a dishwasher having the heater attached to the outside of the tableware storage tank via a filler that enhances heat transfer and adhesion, and having a ventilation passage communicating between the heater cover and the tableware storage tank, the heater is provided with the filler. A dishwasher characterized by being covered with a heater cover except for the dishwasher. 3. The dishwasher according to claim 1, wherein the heater is directly attached to the heater mounting portion of the tableware storage tank. 4. A heater according to claim 3, wherein a nut is welded to the heater mounting portion of the tableware storage tank, a heater is mounted on the nut, a bolt is inserted through the nut on which the heater is mounted, and the heater is mounted by the bolt and the nut. A dishwasher directly attached to the heater mounting part of the tableware storage tank. 5. The dishwasher according to claim 4, wherein an insulating piece is interposed between the heater and the nut. 6. The method according to claim 1, wherein:
A dishwasher in which a projection is provided on an outer peripheral portion of a heater, and the heater and a heater cover are combined and attached integrally via the projection.