JPS5825447B2 - dishwasher - Google Patents

Description

Detailed Description of the Invention The present invention operates by energizing a time switch drive motor that transfers a series of programs such as washing, rinsing, and draining, and a detergent dispenser and a rinse dispenser. The present invention relates to a dishwasher equipped with a solenoid configured to operate a rinse dispenser and to operate a rinse dispenser when the next rinse is loaded.

Generally, the above-mentioned solenoid is configured to operate the detergent dispenser first when adding detergent, and then operate the rinse dispenser when adding rinse.For example, when a user sets the detergent dispenser as usual, Among the select switch keys that select the operation program, for example, rinse,
If you press the key for drying only, the solenoid will be energized when the rinsing step is reached, but since the detergent dispenser is set as described above, the solenoid only operates the detergent dispenser and does not perform the rinsing process. There was a problem in that the rinse dispenser could not be operated at the time of injection, and therefore the rinse could not be dispensed when necessary.

The present invention has been made to solve the above-mentioned problems, and one embodiment of the present invention will be described below with reference to the accompanying drawings.

In Fig. 1, 1 is a power supply, 2 is a safety switch operated by a safety switch lever (not shown) that also serves as a lid lock, and the lid (not shown) is opened by the safety switch lever (not shown) that also serves as a lid lock. This is done for the first time by operating the button ( ) to release the lock.

3 is a fast-forward timer motor, 4 is a time switch drive motor, 5 is a liquid level control switch, 6 is a water supply valve, and 7 is closed when the water reaches a certain temperature, that is, 42°C, and energizes the drive motor 4. 8 is a solenoid for adding detergent and rinse, 9 is a heater for boiling water, 10 is a temperature fuse, and 11 is a relay. The contact NO is connected to the heater 9 side, and the normally closed contact NC is connected to the drive motor 4 side.

12 is the relay coil, 13 is the water at a constant temperature, i.e. 7
This is a single-pole, single-throw thermostat that opens when the temperature reaches 0°C, cuts off the power to the relay coil 12, switches the relay 11 to the normally closed contact NC side, and turns off the heater 9. It is connected to the T side of contact T7.

14 is a motor that drives the cleaning pump and the drain pump in forward and reverse rotation; 15 is a capacitor attached to the motor 14; 81 to S6 are select switch contacts; T;

~'I'll is the contact point of the time switch.

In FIG. 2, the contact TIOj T1□ is operated by a cam A that rotates once every 60 seconds, and the contacts T1 to T are the contact T1o.

Cam A, which moves T1□, rotates once, and cam B, which moves contacts T1 to T9, moves one step to operate.

The cam B is divided into 30 parts, and one step is one minute.

4 and 5 show the detergent dispenser and rinse dispenser operated by a solenoid, 16 is the plunger of the solenoid 8, 17 is the plunger of the solenoid 8, and 17 is the plunger of the solenoid 8.
The detergent dispenser 8 is attached, and the lever 19 is linked to the opening/closing lid (not shown) of the detergent dispenser 17.
Reference numeral 9 is rotatably attached to a shaft 20, and a spring (not shown) wound around the shaft 20 always moves the detergent dispenser 1 in the direction of arrow R, that is, the opening/closing lid (not shown)
7 is biased in the direction to open the opening.

An operating lever 21 has one end connected to the plunger 16 of the solenoid 8, and this operating lever 21 is always urged in the direction B by a spring 22.

Reference numeral 23 denotes a rinse dispenser, which has a lever 24, and this lever 24 is configured to detachably engage with the operating lever 21.

Reference numeral 25 denotes a mountain-shaped protrusion formed in a substantially central portion of the operating lever 21 so as to protrude upward, and this protrusion 25 is used to store detergent in the detergent dispenser 17 and to open/close the lid (not shown).
When the opening of the detergent dispenser 17 is closed, the lever 19 is rotated in the direction of arrow A and engaged as shown by the dotted line in FIG.

Due to this engagement, the operating lever 21 is rotated in the direction of arrow B' to the state shown by the dotted line in FIG.

In this state, when the solenoid 8 is energized, the plunger 16 is attracted in the direction of the arrow.

Due to this suction, the lever 19 is lifted in the direction of arrow C by the mountain-shaped protrusion 25 and disengaged from the protrusion 25, and a spring (not shown) wound around the shaft 20 is removed.
The force rotates in the direction of arrow N to open the opening/closing lid (not shown) of the detergent dispenser 17.

Thereby, the detergent put into the detergent dispenser 17 is put into the washing tank.

Also, during this operation process, since the engagement with the operating lever 19 is released, the spring 22 rotates in the direction of arrow B and engages with the lever 24 of the rinse dispenser 23.

Therefore, when the solenoid 8 is energized next time, the actuating lever 21 pulls the lever 24 of the rinse dispenser 23, and the rinse put into the rinse dispenser 23 is thrown into the cleaning tank.

In this case, the solenoid 8 is energized by closing the contact T6 of the time switch to the B side during step E in FIG. It will be done.

In the present invention, between the above-mentioned process E and process O, that is, the water supply and drainage process K and the process L as shown in FIG.
A portion is provided between the rinsing step and the rinsing step where the solenoid 8 is momentarily energized.

That is, a recess 26 is provided in the contact T6 of the time switch, and a movable contact piece 27 enters the recess 26 to close the contact T6 of the time switch to the B side, and by this closing, the solenoid 8 is instantaneously operated. This is what I did.

Also, if you press the select switch 1 -)- in Figure 3, all cycles from A to R of the operation program in Figure 2 will be transferred, and if you press the key 2 again, A-C,
Move through the Q and R cycles and press the K3 key, D-
Shift to the H cycle and press the 4 key again to switch to J-
Transfer the H cycle.

Therefore, for example, if the user closes the opening of the detergent dispenser 17 with the opening/closing lid (not shown) in the usual manner and presses the 4 key, the operation will be as shown in FIG.
-H cycle, but since the solenoid 8 is momentarily energized between the K water supply and drainage process and the L rinsing process, the detergent dispenser 17 is activated as shown in FIG.
The lever 19 and the actuating lever 21 are in the experimental state, that is, the opening/closing lid (not shown) is opened, and the actuating lever 21 engages with the lever 24 of the rinse dispenser 23.

Therefore, in the next step O, that is, when rinsing is applied, the solenoid 8 is energized, so that the operating lever 21 pulls the lever 24 of the rinse injector 23, and the rinse introduced into the rinse injector 23 is injected.

If you press the 1 key on the select switch in Fig. 3, the entire cycle from A to R of the operation program in Fig. 2 will be transferred, and if you press the 3 key again, it will move to D.
-H cycle is transferred, but in this case, the solenoid 8 is energized for the second time between the K water supply and drainage process and the L rinsing process, so the rinse input device 23 is operated. In this case, since the energization of the solenoid 8 is instantaneous, there is no particular problem as only a small amount of rinsing is required.

As described above, according to the present invention, a single solenoid that operates the detergent dispenser and the rinse dispenser by energization operates the detergent dispenser first when detergent is dispensed, and then operates the rinse dispenser when the next rinse is dispensed. Between the time of adding the detergent and the time of adding the rinse, the solenoid is operated to an extent sufficient to open the opening/closing lid of the detergent dispenser, but insufficient to operate the rinse dispenser. If the time switch is configured to operate instantaneously and the time switch is set to perform a series of programs such as washing, rinsing, and draining, the solenoid will sequentially operate the detergent dispenser and rinse dispenser. When it is set to operate and perform a series of programs such as cleaning, rinsing, and draining, the rinse input device is configured to perform the rinse input operation following the instantaneous operation of the solenoid. Therefore, even if the user closes the opening/closing lid of the detergent dispenser as usual and presses the key for selecting an operation program, for example, only rinsing or drying, the You can always add a rinse.

In other words, the lid of the detergent dispenser is opened by the instantaneous operation of the solenoid, and the rinse dispenser is operated by the next solenoid operation. Even if the lid of the detergent dispenser is closed without adding detergent due to the custom, the rinse operation will be performed after the lid is opened, and the rinse will be inserted regardless of the program. .

[Brief explanation of the drawing]

Fig. 1 is an electric circuit diagram of a dishwasher showing an embodiment of the present invention, Fig. 2 is an operation program of the same dishwasher, Fig. 3 is a program for the select switch in Fig. 1, and Fig. 4 is a detergent dispenser. 5th rear view showing the relationship between the rinsing dispenser and the
The figure is a perspective view showing the engaged state of the lever of the detergent dispenser and the operating lever, and FIG. 6 is a view showing the relationship between the cam of the time switch and the movable contact piece. 4... Drive motor, 8... Solenoid, 17... Detergent dispenser, 23... Rinse dispenser.

Claims (1)

[Claims] 1 In a dishwasher in which a series of programs such as washing, rinsing, and draining are transferred by a drive motor of a time switch, a first lever that is biased in the direction of opening the opening/closing lid of the detergent dispenser and a rinse dispenser is provided. and a second lever that engages with the first lever or the second lever and is operated by energizing the solenoid, and when detergent is added, the operating lever is operated by energizing the solenoid. , the first part was engaged against the biasing force.
The lever is disengaged and the first lever is driven to open the opening/closing lid of the detergent dispenser, and when the next rinse is to be dispensed, the solenoid is energized to operate the operating lever and the second lever is operated.
The rinse dispenser is operated by driving the lever, and the solenoid is momentarily energized between the detergent injection and the rinse injection, and if the operating lever is engaged with the first lever, this The engagement is released and the actuating lever moves to the first position.
If the lever is not engaged but the second lever is engaged, the second lever is instantaneously driven, and the time switch is subjected to a series of washing, rinsing, and draining operations When the program is set to execute, the detergent dispenser and rinse dispenser are sequentially operated by the solenoid, and when the solenoid is set to execute a series of programs such as washing, rinsing, and draining, the A dishwasher configured to perform an instantaneous operation followed by a rinse loading operation of a rinse dispenser.