JPH08252545A - Washing device - Google Patents

Abstract

PURPOSE: To make it possible to surely prevent the jumping out of a washing liquid, etc., with a simple construction. CONSTITUTION: The inner side of a door 15 for opening and closing a washing chamber 13 is provided with an inner door 25 turnably around a pivotal shaft 14. A trough-shaped liquid storage section is formed at the front edge of the inner door 25 so as to be turned back to the inner side of this washing chamber 13. An outflow port is formed in the bottom. The washing liquid and hot rinsing water flow into the liquid storage section when a washing operation is carried out in the washing chamber 13 and the washing water, etc., fills the liquid storage section. The inner door 25 is held energized in an open direction by a spring 29 and the inner door is opened by spring force when the inside of the liquid storage part is emptied at the end of the washing operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning device having an improved opening / closing structure of a cleaning chamber.

[0002]

2. Description of the Related Art For example, a dishwasher having a structure shown in FIG. 5 is known. This is a cleaning room 1 with the front open
A cleaning nozzle 2 and a rinsing nozzle 3 are rotatably provided in the upper and lower parts of the inside, and an open front surface thereof is opened and closed by a door 5 which rotates around a shaft 4. When the dishes are put in the washing room 1 and the operation switch is turned on, the dish washing operation is executed, and in the process, the washing nozzle 2 is rotated and the washing liquid is ejected, and the rinsing nozzle 3 is rotated and the hot water for rinsing is performed. Is gushed out.

[0003]

By the way, when the user opens the door during the above-described cleaning operation, the cleaning liquid or the like ejected from the cleaning nozzle or the rinse nozzle jumps out from the front opening of the cleaning chamber. In order to prevent this, a door switch has been conventionally provided to stop the operation when the door is opened, but it is still difficult to stop the operation instantaneously due to the rotational inertia of the motor etc. And
It was not possible to completely prevent the cleaning liquid from splashing out. Therefore, for example, various safety devices have been considered such as providing a door lock device and releasing the lock after the motor or the like is completely stopped. However, since all of them have complicated structures, considerable cost increase and It causes the problem of increased failures. For this reason, in many models, the fact is that after providing the door switch, it is only necessary to attach a note to open the door after confirming that the nozzle rotation has stopped.

The present invention was created in view of the above circumstances. It is an object of the present invention to provide a washing machine that can reliably prevent the washing liquid and the like from splashing out with a simple structure.

[0005]

A washing machine according to the present invention is configured such that a washing chamber having a washing nozzle therein is opened and closed by a door, and is provided inside the door to open and close the washing chamber. Inner door, a biasing portion that constantly biases the inner door in the opening direction, and a liquid that is provided on the inner door to collect the liquid splattered from the nozzles and the liquid weight causes the inner door to resist the biasing portion. The invention is characterized in that it is provided with a liquid storage part for holding the liquid storage part in a closed state and an outlet for spontaneously outflowing the liquid received in the liquid storage part (the invention of claim 1). In this case, the door may be provided with an interlocking protrusion that comes into contact with the inner door and closes the inner door against the urging force of the urging portion during the closing operation (the invention of claim 2). .

[0006]

When the cleaning operation is executed by closing the inner door and the door of the cleaning chamber, the cleaning liquid or the like is ejected from the nozzle in the cleaning chamber to clean the object to be cleaned inside the cleaning chamber. During the execution of this cleaning operation, the liquid ejected from the nozzles flows into the liquid storage portion of the inner door, so that the liquid storage portion is always filled with the liquid even when the liquid flows down from the outlet. If the door is opened here, the liquid weight of the liquid stored in the liquid storage portion of the inner door exceeds the biasing force for opening the inner door, and thus the inner door is kept closed, Even if the force of the liquid ejected from the nozzle is still strong, the liquid is blocked by the inner door and does not flow out. When the washing operation is finished and the momentum of the liquid ejected from the nozzle is reduced, the amount of the liquid flowing into the liquid storage portion is also rapidly reduced, and the outflow amount from the outflow port becomes superior.
Therefore, when the ejection of liquid from the nozzle is sufficiently weakened, the weight of the liquid in the liquid storage portion is reduced, the urging force of the urging portion overcomes, and the inner door is naturally opened. That is, the inner door is naturally opened with a delay from the stop of the cleaning operation by a certain time. In the invention of claim 2, when the door is closed, the inner door is naturally closed by the interlocking protrusion.

[0007]

The effects of the present invention are as follows. Even when the door is opened when the cleaning liquid or the like is ejected from the nozzle, the inner door is closed, so that the liquid can be reliably prevented from splashing out. Further, the inner door is automatically opened when the force of the liquid jetted from the nozzle is weakened, so that it is not necessary to manually open the inner door subsequent to the door, which is excellent in usability. Moreover, since such a delayed opening operation is skillfully achieved by utilizing the balance between the biasing force of the inner door in the opening direction and the weight of the liquid stored in the liquid storage part, the structure is extremely simple and reliable. In addition to high efficiency, the manufacturing cost can be significantly reduced. Further, according to the invention of claim 2, since the inner door can be closed by utilizing the operation of closing the door, there is an advantage that the operability is further excellent.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a dishwasher will be described below with reference to FIGS. In the figure,
Reference numeral 10 is an outer box having an opening 11 formed in the front surface of the upper part, and a cleaning tank 12 having an open upper surface is disposed inside the outer box, and a space above the cleaning tank 12 is used as a cleaning chamber 13. This cleaning room 13
The opening 11 of the door is a door 1 rotatably supported by a pivot 14.
5 can be opened and closed, and when the handle 16 is opened and the door 15 is opened, the opened state can be maintained by weight balance, and when the door 15 is closed, the closed state is maintained by its own weight. There is. A cleaning nozzle 17 and a rinsing nozzle 18 are rotatably provided at the top and bottom of the cleaning chamber 13, respectively. A cleaning liquid storage portion 19 is formed in the cleaning tank 12 so as to be deeper, and the cleaning liquid stored therein is supplied to the cleaning nozzle 17 through a pipe 21 by a circulation pump 20. The cleaning liquid is spouted into the cleaning chamber 13 while being rotated by a reaction force. Further, a rinse water tank 22 is provided below the cleaning tank 12,
Rinse pump 2 for hot water for high-temperature rinsing stored here
3 to supply to the rinse nozzle 18 through the pipe 24,
With this, hot water can be ejected into the cleaning chamber 13 while rotating the rinse nozzle 18 with a reaction force.

Inside the door 15, an inner door 25 made of plastic having excellent heat resistance and chemical resistance is provided. This is the pivot 14 of the door 15.
It is rotatable coaxially with and can open and close the opening 11 opened by the door 15 by rotating. In addition, a liquid storage part 26 for storing a cleaning liquid or the like is formed at the front edge of the inner door 25 so as to be folded back to the inside of the cleaning chamber 13, and thereby a cleaning liquid is stored in the cleaning chamber 13. When the cleaning operation is performed, the cleaning liquid and the rinse water ejected from the cleaning nozzle 17 or the rinsing nozzle 18 flow into the liquid storage section 26. An outlet 27 is formed at the bottom of the liquid storage portion 26, and the opening diameter of the outlet 27 is filled with the cleaning water or the like that has flowed during the cleaning operation to fill the liquid storage portion 26 for cleaning. The size is set so that it will flow out in a short time when the operation is completed.

On the other hand, a spring hooking piece 28 is provided on the inner wall of the cleaning chamber 13 of the outer box 10, and a tension coil spring 29 corresponding to a biasing portion is provided between this and the rear edge of the inner door 25. The inner door 25 is constantly urged in the opening direction. The biasing force of the tension coil spring 29 causes the inner door 25 to be opened by the tension coil spring 29 in a state where only the dead weight of the inner door 25 acts without the cleaning liquid or the like being stored in the liquid storage portion 26, and the liquid storage When the portion 26 is filled with a cleaning liquid or the like, the inner door 25 is set to maintain the closed state due to the weight of the liquid. Further, on the inner surface of the door 15, at a position corresponding to the rear edge portion of the inner door 25 when the inner door 25 is in a stacked state as shown in FIG. 30 is provided, and the rear edge of the inner door 25 urged by the tension coil spring 29 is in contact with the interlocking protrusion 30. Although not shown, the outer box 10 is provided with a door switch for detecting the opening of the door 15, and when the opening is detected, the pumps 20 and 23 are turned off.

Next, the operation of this embodiment will be described.
To wash the dishes, place your hands on the handle 16 and the door 15
Is opened and the dishes are stored in the washing room 13. At this time,
When the door 15 is opened, the interlocking protrusion 30 rotates integrally and retracts rearward, so that the inner door 25 is opened and rotated by the spring force of the tension spring 29. Therefore, even if the opening 11 of the cleaning chamber 13 is doubly closed by the door 15 and the inner door 25, the opening 11 is naturally opened only by opening the door 15 by hand. Therefore, the dishes are stored in the washing room 13, and the handle 1
When 6 is reached and the door 15 is rotated in the closing direction, the door 15
The interlocking protrusion 30 engages with the rear edge portion of the inner door 25 and rotates it together with the door 15. When the door 15 reaches the completely closed position, the door 15 and the inner door 25 are held in the closed state by their own weight. After that, by turning on an operation switch (not shown), the circulation pump 20 and the rinsing pump 23 are sequentially operated, the cleaning liquid is ejected from the cleaning nozzle 17, and the rinsing water is ejected from the rinsing nozzle 18 to clean the dishes inside. And rinsing is performed.
During such a cleaning operation, the cleaning liquid and the like ejected from the nozzles 17 and 18 collide with the inner wall of the cleaning chamber 13 and flow down into the cleaning tank 12, but some of the liquid that collides with the inner wall of the inner door 25 , Flows down the inner wall and flows into the liquid storage section 26. The liquid that has flowed in flows out of the outlet 27 of the liquid storage unit 26 into the cleaning tank 12, but since a large amount of liquid flows into the liquid storage unit 26 during the cleaning operation, the cleaning liquid, etc. Is satisfied and is constantly overflowing.

Upon completion of the washing operation, the rinse pump 23
Even if the power is cut off, the motor continues to rotate by inertia for a while, so that the hot water continues to be ejected from the rinsing nozzle 18 for a short period of time although it rapidly declines after the end of the operation.
At this time, the user determines that the cleaning operation is completed and the door 15
May be released. Then, in this embodiment, the interlocking protrusion 30 rotates integrally and retreats rearward in the same manner as described above, but since the liquid storage portion 26 of the inner door 25 is filled with rinsing hot water. The moment in the closing direction due to the liquid weight exceeds the moment in the opening direction due to the urging force of the tension coil spring 29, and the inner door 25 continues to be kept closed. Therefore, immediately after the operation, even if the door 15 is opened while the rinsing hot water is still ejected from the rinsing nozzle 18, the rinsing hot water is blocked by the inner door 25 and does not jump out.

After that, when the force of the rinsing hot water ejected from the rinsing nozzle 18 gradually decreases and the amount of the rinsing hot water flowing into the liquid storage portion 26 decreases rapidly, the amount of outflow from the outlet 27 of the liquid storage portion 26 becomes superior. Therefore, the weight of the liquid in the liquid storage portion 26 becomes lighter, and the moment of the tension coil spring 29 in the opening direction overcomes, so that the inner door 25 is naturally opened. That is, in this embodiment, when the door 15 is opened immediately after the end of the cleaning operation, the inner door 25 is automatically opened at a time when the cleaning hot water is sufficiently weakened and the squirting of the rinse water is sufficiently delayed after the cleaning operation is completed. Will be open to the public.

The door 15 is inadvertently inadvertently used during the cleaning operation.
Even if the door is opened, the door switch detects the opening of the door at that point and turns off the pumps 20 and 23. Therefore, in the same manner as described above, the spouting of the cleaning liquid etc. is sufficiently weakened and it becomes safe. The inner door 25 will be automatically opened. As described above, according to the present embodiment, the inner door 25 is closed even if the door 15 is opened when the cleaning liquid is ejected from the nozzles 17 and 18 during or immediately after the cleaning operation is completed. It is possible to reliably prevent the cleaning liquid and the like from splashing out. Further, since the inner door 25 is automatically opened when the momentum of the liquid jetted from the nozzles 17 and 18 is weakened, it is not necessary to manually open the inner door 25 subsequent to the door 15, which is excellent in usability. . Moreover, in the present embodiment, such a delay opening operation is performed by the urging force of the inner door 25 in the opening direction.
Since it is skillfully achieved by utilizing the balance with the weight of the liquid stored in the liquid storage portion 26, the structure is extremely simple, the reliability is high, and the manufacturing cost can be significantly reduced.
In addition, in this embodiment, when the door 15 is provided with the interlocking protrusion 30 and the door 15 is rotated and closed, the inner door 25 is also closed and rotated. Operation of the inner door 25
It is not necessary to consider the opening / closing operation at all while providing a double structure.

<Other Embodiments> The present invention is not limited to the embodiments described above and illustrated in the drawings. For example, the following embodiments are also included in the technical scope of the present invention. In addition to the above, various modifications can be made without departing from the scope of the invention. (1) In the above embodiment, the door 15 is configured to maintain its closed state by its own weight when it is closed, but not limited to this, for example, a door lock mechanism may be provided to surely close the door. Good. In this case, a switch for detecting that the door lock mechanism is unlocked may be provided, and the pump or the like may be turned off based on the operation of the switch.

(2) In the above embodiment, the inner door 25
The pulling coil spring 29 is used to urge it in the opening direction. However, the present invention is not limited to this, and an arm is provided on the pivot of the inner door, and a weight attached to the end of the arm provides a biasing force in the closing direction. Good. (3) In the above-described embodiment, an example in which the invention is applied to a dishwasher is shown, but the object to be washed is not limited to dishware, but can be widely applied to a washer in which washing liquid is jetted into the washing chamber by a nozzle to perform washing. .

[Brief description of drawings]

FIG. 1 is an overall vertical sectional view showing an embodiment of the present invention.

FIG. 2 is a partially enlarged vertical sectional view showing a closed state of a door.

FIG. 3 is a partially enlarged vertical sectional view showing an opened state of a door.

FIG. 4 is a partially enlarged vertical sectional view showing an opened state of an inner door.

FIG. 5 is a vertical sectional view showing an example of a conventional dishwasher.

[Explanation of symbols]

13 ... Washing room 15 ... Door 17 ... Washing nozzle 18 ... Rinse nozzle 25 ... Inner door 26 ... Liquid storage part 2
7 ... Outflow port 29 ... Coil spring (biasing part) 30 ... Interlocking protrusion

Claims (2)

[Claims] 1. A cleaning chamber having a cleaning nozzle inside for opening and closing by a door, wherein an inner door provided inside the door for opening and closing the cleaning chamber,
A biasing part that constantly biases this inner door in the opening direction,
A liquid storage portion provided on the inner door for receiving the liquid scattered from the nozzle and holding the inner door in a closed state against the biasing portion by the weight of the liquid, and a liquid storage portion for receiving the liquid storage portion. A cleaning device having an outlet for spontaneously discharging the liquid. 2. The door is provided with an interlocking protrusion for abutting against the inner door and closing the inner door against the urging force of the urging portion when the door is closed. The cleaning device according to claim 1.