JPH1132969A - Dish washer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dish washer capable of reducing a maintenance cost and easily executing washing work. SOLUTION: This dish washer is provided with a setting part 26 which is provided corresponding to a motor 9 and outputting the rotating angle of the forward rotating direction of the motor 9 (=rotating angle of a backward rotating direction), time when the motor 9 is given forward rotation (backward rotation) driving and the rotating speed of the motor 9 as a set signal Ss1, CPU 30 controlling each part of a device, a motor driver 32 provided corresponding to the motor 9 and driving the motor 9 with a driving signal Sd1 supplied from CPU 30, and a brush 15 driven by the motor 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art FIG. 5 is a perspective view showing the structure of a conventional dishwasher. In this figure, reference numeral 1 denotes a substantially disk-shaped base. 2, 2, ... are a plurality of cleaning brushes,
Each is rotatably suspended from the base 1. Reference numeral 3 denotes a motor attached to the base 1 via a rod-shaped support member 4, and the rotational driving force of the motor 3 is transmitted through a plurality of cleaning brushes 2, 2,. Is transmitted to

In the above configuration, when the motor 3 is driven, the cleaning brushes 2, 2,... Are each driven to rotate in the same direction. In this state, the worker removes the dirty tableware 100.
When a (for example, a bowl) is put on the rotating cleaning brush 2, the inner peripheral surface of the tableware 100 is cleaned.

[0004]

By the way, in the conventional dishwasher, since the rotating direction of the cleaning brushes 2, 2,... Is always the same, the cleaning brushes 2, 2,. Since the hairs of 2,... Bend in a specific direction, the cleaning ability is reduced. Therefore, in the conventional dishwasher, the cleaning brushes 2, 2,..., Which have curled hairs, must be frequently replaced, which has a disadvantage that the maintenance cost is high. Also, in the conventional dishwasher, since the rotating directions of the cleaning brushes 2, 2,... Are always the same, considerable force is required to press the tableware 100 against the cleaning brushes 2, 2,. This has the disadvantage that the hands and arms of the worker become tired.
The present invention has been made under such a background, and it is an object of the present invention to provide a dishwasher in which maintenance costs are low and a washing operation can be easily performed.

[0005]

According to a first aspect of the present invention, there is provided a brush, rotation angle setting means for setting a rotation angle of the brush in a normal rotation direction and a rotation angle of a reverse rotation direction, and the rotation angle setting means. And a driving means for alternately driving the brush in the normal rotation direction and the reverse rotation direction based on the above setting. The invention according to claim 2 is the dishwasher according to claim 1, further comprising a rotation speed setting unit that sets a rotation speed of the brush, wherein the driving unit includes the rotation angle setting unit and the rotation angle setting unit. The brush is alternately driven in the normal rotation direction and the reverse rotation direction at a set rotation speed based on each setting of the rotation speed setting means. According to a third aspect of the present invention, there is provided the dishwasher according to the first or second aspect, further comprising a sink tank in which the washing water is stored, wherein the brush is at least partially submerged in the washing water. And is rotatably supported by the sink tank.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front sectional view showing a configuration of a dishwasher according to an embodiment of the present invention. FIG.
It is a top view showing composition of a dishwasher by one embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a substantially box-shaped housing. A sink tank 2 is attached so as to cover the upper opening 1a of the housing 1, and stores washing water. In the bottom plate 2a of the sink tank 2, a drain port 2b shown in FIG. 2 and two circular openings (not shown) are formed on both sides of the drain port 2b.

Reference numeral 3 denotes a support attached to the back side of the bottom plate 2a of the sink tank 2 by screws 4, 4,. The support 3 is composed of a plate member 5 and a plate member 6 which is arranged to face the plate member 5 via spacer members 7 and 8. The plate member 5 has a circular opening 5a at a position corresponding to the drain port 2b, and two circular openings 5a on both sides of the circular opening 5a.
Two circular openings 5b are respectively formed. In FIG. 1, one of the two circular openings 5b is illustrated.

The plate member 6 has a circular opening 5a of the plate member 5.
A circular opening 6a is formed at a position opposed to the two, and two circular openings 6b, 6b are formed at two positions facing the two circular openings 5b of the plate member 5, respectively. Reference numeral 9 denotes a motor attached to the circular opening 6b of the plate member 6 via a support member 10, and is provided such that its rotating shaft 9a faces upward.

Reference numeral 11 denotes a columnar rotating shaft, and a portion near the above-mentioned portion is rotatably supported by a circular opening 5b via a bearing 12 so that a fixed length portion protrudes above the bottom plate 2a. ing. The rotary shaft 11 has a recess 11a at one end and a recess 11b at the other end.

The recess 11 a of the rotating shaft 11 is fitted to the rotating shaft 9 a of the motor 9. Reference numeral 13 denotes a cylindrical rotary shaft, the lower end of which is fitted into the concave portion 11 b of the rotary shaft 11. On the upper end of the rotating shaft 13, a large number of hairs 14, 14, ... are radially implanted. Also,
The brush 1 is formed from the rotating shaft 13 and the bristles 14, 14,...
5 are configured.

Reference numeral 16 denotes a motor having the same configuration as the motor 9 and is attached to the circular opening 6b via a support member 17. Reference numeral 18 denotes a rotation shaft having the same configuration as the rotation shaft 11, and is provided rotatably so that one end of a fixed length protrudes above the bottom plate 2a. 19 is the rotating shaft 1
3, the lower end of which is the same as the rotating shaft 1.
8 is fitted in a concave portion (not shown) formed in the upper end portion. A large number of hairs 20, 2,
.. Are radially planted. Also, the rotating shaft 19
The bristles 20, 20,... Constitute a brush 21.

Reference numeral 22 denotes a cylindrical drain pipe provided vertically below the bottom plate 2a of the sink tank 2, and an upper end opening thereof is attached to the drain port 2b. This drain pipe 2
2 guides the washing water stored in the sink tank 2 to a drain port (not shown). Reference numeral 23 denotes a drain valve provided in the middle of the drain pipe 22.

Reference numerals 24 and 25 denote tachometers for displaying the rotation speeds of the motors 9 and 16, respectively. Reference numerals 26 and 27 are setting units used for various settings described later.

FIG. 3 is a block diagram showing the electrical configuration of the dishwasher according to the embodiment described above. In this figure, parts corresponding to those in FIG. 1 are denoted by the same reference numerals.
The setting unit 26 shown in FIG. 3 is provided corresponding to the motor 9, and is used for setting the rotation angle of the motor 9 in the forward rotation direction and the reverse rotation direction, and the rotation speed of the motor 9. Specifically, the setting unit 26 sets the rotation signal of the motor 9 in the forward rotation direction (reverse rotation direction) by the rotation angle in the normal rotation direction (= rotation angle in the reverse rotation direction) and the rotation speed of the motor 9 by the setting signal Ss1 Output as

The setting unit 27 is provided corresponding to the motor 16 and is used for setting the rotation angle of the motor 16 in the normal rotation direction and the rotation direction of the motor 16 and the rotation speed of the motor 16. Specifically, the setting unit 27 determines the time during which the motor 16 is driven forward (reverse rotation) by the rotation angle in the forward rotation direction (= the rotation angle in the reverse rotation direction), and
Is output as the setting signal Ss2.

Reference numeral 30 denotes a CPU (central processing unit) for controlling each unit of the apparatus. The operation of the CPU 30 will be described later in detail. 31 is a constant period clock signal Sc
The clock signal Sc is used by the CPU 30 to measure time. 32
Is a motor driver provided corresponding to the motor 9, and is a drive signal Sd1 (FIG. 4) supplied from the CPU 30.
(See (a)), the motor 9 is driven. 33 is a motor driver provided corresponding to the motor 16,
The drive signal Sd2 supplied from the CPU 30 (FIG. 4B)
), The motor 16 is driven.

Next, the operation of the dishwasher according to the above-described embodiment will be described. In FIG. 3, the worker
Using the setting unit 26, the drive time of the motor 9 (brush 15) in the normal rotation direction and the reverse rotation direction is set as the normal rotation drive time Tp1 and the reverse rotation drive time Tn1 shown in FIG. 15) Set the rotation speed. As a result, the setting unit 26 outputs the forward rotation drive time Tp1, the reverse rotation drive time Tn1, and the motor 9 (brush 1).
The rotation speed of 5) is output to the CPU 30 as the setting signal Ss1.

Next, the operator uses the setting unit 27 to set the forward drive time and the reverse drive time of the motor 16 (brush 21) in the forward rotation direction and the reverse rotation direction as shown in FIG. After setting as Tn2, the motor 16
The rotation speed of (brush 21) is set. As a result, the forward rotation drive time Tp2, the reverse rotation drive time Tn2, and the speed of the motor 16 (brush 21) are output from the setting unit 27 to the CPU 30 as the setting signal Ss2.

When the setting signal Ss1 is input,
The CPU 30 starts counting the clock signal Sc, and outputs a drive signal Sd1 of “H” for the normal rotation drive time Tp1 shown in FIG. 4A to the motor driver 32 based on the count result. As a result, the motor driver 32 drives the motor 9 in the normal rotation at the set rotation speed for the normal rotation driving time Tp1. As a result, the rotation shaft 9a, the rotation shaft 11, and the brush 15 shown in FIG.
It is driven to rotate in the forward direction. Then, the worker moves the tableware 40 shown in FIG. 1 in the direction of the arrow Z and covers the brush 15. Thereby, the inner peripheral surface of the tableware 40 is cleaned.

At time t1 shown in FIG. 4A, the CPU 30 changes the drive signal Sd1 from "H" to "L".
To As a result, the motor driver 32
Is driven in reverse at a set rotation speed for a reverse drive time Tn1 minute. As a result, the rotating shaft 9a and the rotating shaft 11 shown in FIG.
The brush 15 is driven in the reverse direction in the Y direction shown in FIG. Thereafter, the brush 15 (motor 9) is driven for the normal rotation drive time T.
The drive is alternately driven forward or reverse every p1 (reverse drive time Tn1).

Similarly, when the setting signal Ss2 is input, the CPU 30 alternately sets "H", "H" for every forward drive time Tp2 (reverse drive time Tn2) shown in FIG.
The drive signal Sd2 set to L ”is output to the motor driver 33. Thereby, the motor driver 33
6 is driven forward for a forward drive time Tp2, and then driven reversely for a reverse drive time Tn2.

As a result, the brush 21 shown in FIG. 2 is driven to rotate forward in the direction of the arrow X, and then driven to rotate in the direction of the arrow Y in the reverse direction. When the tableware 41 shown in FIG. 1 is moved in the Z direction during the rotation of the brush 21 and is put on the brush 21, the inner peripheral surface of the tableware 41 is cleaned.

As described above, in the dishwasher according to the above-described embodiment, since the brush 15 is fixed to the sink tank 2, the brush 15 rotates stably.
Therefore, according to the dishwasher according to the above-described embodiment, the worker can perform the washing operation without wobbling.

[0024]

As described above, according to the first aspect of the present invention, the brush is driven alternately in the normal rotation direction and the reverse rotation direction. Since the force is not applied to the operator's hand, arm, or the like, an effect is obtained that the washing operation can be performed easily. Also,
According to the first aspect of the present invention, since the brush is alternately driven in the normal rotation direction and the reverse rotation direction, the brush does not bend in one direction, so that the life of the brush is extended, and the maintenance cost is reduced. The effect of being able to be cheap is obtained. Further, according to the second aspect of the present invention, since the rotation speed of the brush can be set arbitrarily, an effect of being able to perform easy cleaning in accordance with the force of the operator's hand, arm or the like can be obtained. can get. In addition, according to the third aspect of the present invention, since the brush is supported by the sink tank, the rotation of the brush is stabilized, and the effect that the operator does not wobble during the cleaning operation can be obtained. .

[Brief description of the drawings]

FIG. 1 is a front sectional view showing a configuration of a dishwasher according to an embodiment of the present invention.

FIG. 2 is a plan view showing a configuration of a dishwasher according to the same embodiment.

FIG. 3 is a block diagram showing an electrical configuration of the dishwasher according to the same embodiment.

FIG. 4 is a diagram showing drive signals Sd1 and Sd2 shown in FIG.

FIG. 5 is a perspective view showing a configuration of a conventional dishwasher.

[Explanation of symbols]

 9 motor 15 brush 16 motor 21 brush 26 setting unit 27 setting unit 30 CPU 32 motor driver 33 motor driver

Claims (3)

[Claims] A brush; a rotation angle setting unit for setting a rotation angle of the brush in a normal rotation direction and a rotation angle of a reverse rotation direction; and a brush in a normal rotation direction based on the setting of the rotation angle setting unit. A dishwasher, comprising: a driving unit that drives the motor in a reverse direction. 2. The method according to claim 1, further comprising: a rotation speed setting unit configured to set a rotation speed of the brush, wherein the driving unit sets the brush based on each setting of the rotation angle setting unit and the rotation speed setting unit. The dishwasher according to claim 1, wherein the dishwasher is alternately driven in the normal rotation direction and the reverse rotation direction at a changed rotation speed. 3. A washing machine according to claim 1, further comprising a sink tank for storing washing water, wherein the brush is rotatably supported by the sink tank so that at least a part of the brush is submerged in the washing water. The dishwasher according to claim 1.