JPH10225414A - Dishwasher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a heat loss due to the ejection of steam from a washing room. SOLUTION: After pushing a door upward and placing dishes in the washing room, the door 11 is pulled down and closed. After washing the dishes in the washing room by ejecting washing water obtained by mixing detergent into hot water by washing nozzles in the state, hot water is ejected from rinsing nozzles 2 and 2 for rinsing. At the dishwasher like it, a locking hardware 13 operated by a solenoid 12 locks the door 11 so as not to be opened until a prescribed period passes after rinsing. By preventing the door from being opened soon after the finish of rinsing, the ejecting amount of steam at the time of opening the door is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwasher such as a door type or a hood type for washing dishes such as dishes using hot water in a washing room partitioned by a door.

[0002]

2. Description of the Related Art FIG. 3 is a view showing a state in which dishes are being washed by a dishwasher. In FIG. 3, 1 is a washing nozzle, 2 is a rinsing nozzle, 3 is a water pipe, 4 is a rinsing water pipe, 5 is a washing water tank, 6 is a washing pump, 7 is an overflow drain pipe, 8 is a rinsing water tank, 9 A rinse pump, 10 is a water collecting tank, 11 is a door, 16 is a rack, and 17 is tableware.

[0003] The dishes to be washed are placed on a rack 16 after removing solids such as residual vegetables in advance. Then, the door 11 of the dishwasher is pushed up, and the tableware 17 placed on the rack 16 is set in the washing room. After that, the door 11 is lowered, and the washing chamber is closed before the washing process is started.

[0004] The washing water tank 5 contains approximately 6
It is filled with 5 ° C washing water, and in the washing process,
The cleaning water is supplied to the upper and lower cleaning nozzles 1 by the cleaning pump 6.
Sent to 1. At that time, the water is sent to the upper cleaning nozzle 1 through the water pipe 3. The upper and lower cleaning nozzles 1 and 1 spray cleaning water while rotating in the horizontal direction to clean the tableware 17. At that time, the jetted washing water is collected in the water collecting tank 10 and returned to the washing water tank 5.

[0005] When the washing step is completed, the next rinsing step is started. The state of the rinsing step is shown in FIG. The rinsing water tank 8 is provided with a heater, and is filled with hot water of about 85 ° C. heated by the heater. In the rinsing step, the warm water is sent to the upper and lower rinse nozzles 2 and 2 by the rinse pump 9 through the rinse water conduit 4. The upper and lower rinsing nozzles 2 and 2 spray hot water while rotating in the horizontal direction similarly to the cleaning nozzle 1 to wash away the cleaning water on the tableware 17. At this time, the injected hot water is collected in the water collecting tank 10 and enters the washing water tank 5, mixed with the washing water therein, and the overflowing washing water is discharged from the overflow drain pipe 7.

After the rinsing process is completed, the door 11 is opened upward, and the rack 16 on which the tableware 17 is placed is taken out. At this time, the tableware for which the rinsing step has been completed can be dried with the residual heat because the hot water used for rinsing is at a high temperature as described above.

[0007] Conventional documents relating to such a dishwasher include, for example, Japanese Utility Model Laid-Open No. 5-85360 (A47).
L 15/42).

[0008]

However, in the conventional dishwasher, as soon as the rinsing process is completed, the door 11 is closed.
Was opened so that the rack 16 could be taken out.
When the door 11 is opened, a large amount of steam blows out from the cleaning chamber to the outside, which causes a problem that a large heat loss occurs. In the standby state before the next cleaning is performed, the amount of heat released from the cleaning chamber is greatly different between the case where the door 11 is kept open and the case where the door 11 is closed. Even if the door 11 is left open, no alarm is issued, and there is also a problem that heat loss is caused.

An object of the present invention is to solve such a problem and reduce such heat loss in a dishwasher.

[0010]

According to a first aspect of the present invention, there is provided a dishwasher comprising: a washing room which is opened and closed by a door for storing dishes; and a washing water in which a detergent is mixed in hot water. A washing means for injecting the dishes in the washing room, a rinsing means for injecting hot water to the dishes washed by the washing means, and the door cannot be opened for a predetermined time after the hot water injection of the rinsing means is completed. And locking means for locking as described above. By doing so, the door is opened after a predetermined time has elapsed after the rinsing, and the amount of steam blown when the door is opened is reduced, so that heat loss due to steam blowout can be reduced.

A dishwasher according to a second aspect of the present invention is a dishwasher which is opened and closed by a door to store the dishes, washing means for injecting washing water in which a detergent is mixed into hot water to the dishes in the washing chamber, Rinsing means for injecting hot water into the dishes washed with the washing means, and door opening instruction means for outputting a door opening permission signal after a lapse of a predetermined time after completion of the hot water injection by the rinsing means. It is characterized by. Also in this case, the door is opened after a lapse of a predetermined time after the rinsing is completed, and the amount of steam blown is reduced, so that heat loss due to steam blowout can be reduced.

Further, a dishwasher according to a third aspect of the present invention is a dishwasher which is opened and closed by a door to store the dishes, washing means for injecting washing water in which detergent is mixed into hot water to the dishes in the washing chamber, A rinsing means for injecting hot water into the dishes after washing by the washing means, and after the hot water injection of the rinsing means, the door is opened even after a predetermined time has elapsed since the door was opened and the dishes were taken out. And a door closing instruction means for outputting a door closing instruction signal. This prevents the door from being left open for a long time, thereby reducing heat radiation from the cleaning chamber and preventing an increase in heat loss.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings.

(First Embodiment) FIG. 1 is a schematic sectional view of a first embodiment of the present invention. Reference numerals 1 to 11 correspond to those in FIGS. 3 and 4, wherein 12 is a solenoid, 13 is a lock fitting, 14 is its support shaft, and 15 is a spring.

The lock fitting 13 is rotatable about a support shaft 14. One end of the lock fitting 13 is normally pulled downward by a spring 15, and the other end is locked with the upper end of the door 11. The lock of the door 11 is unlocked, but when the solenoid 12 is urged, the other end of the lock fitting 13 is pulled upward, and one end is locked to the upper end of the door 11. Is locked so that it cannot be released.

As shown in FIG. 2, the solenoid 12 is energized when the door 11 is closed and the washing process by the washing nozzle 1 is started after the rack on which the dishes are placed is put into the washing room of the dishwasher. Thereafter, the urging is performed until a predetermined time T seconds elapses after the completion of the washing step and the rinsing step. As a result, the door 11 holds the lock fitting 13 during the cleaning operation and for T seconds (for example, 10 seconds) after the cleaning operation is completed.
Locked and cannot be opened.

In this way, the door 11 cannot be opened for T seconds after the washing step and the rinsing step are completed, and the door 11 is opened after the amount of steam to be jetted becomes small. Since the amount of heat released by the steam from the washing room is very large, if the amount of heat can be reduced as described above, the heat loss can be greatly reduced and the energy saving of the dishwasher can be achieved. Become.

(Second Embodiment) In the first embodiment,
For a predetermined time after the rinsing step is completed, the door 11 is locked so as not to be opened. However, in this embodiment, a buzzer for notifying that the cleaning is completed is provided immediately after the rinsing step is completed. Instead of sounding, after a while, the sound is made to sound as the door 11 opening permission signal so that the door 11 is not opened until that time. Even in this case, similarly to the first embodiment, the amount of steam blown out from the cleaning chamber can be reduced, and the heat loss can be greatly reduced.

As an opening permission signal for the door 11, the opening permission lamp may be turned on after a while after the completion of the washing, instead of the buzzer sounding after a while after the completion of the washing.

(Third Embodiment) In the first and second embodiments, immediately after the rinsing step is completed, the door 1
Although the heat loss of the dishwasher was reduced by preventing the door 1 from being opened, in this embodiment, when the door 11 is kept open for a long time in the standby state after the end of the rinsing step, an alarm buzzer or an alarm is issued. A warning is issued by a lamp or the like. In this way, it is possible to prevent the door 11 from being left open for a long time, thereby reducing wasteful heat radiation from the cleaning room.

[0021]

Since the present invention is configured as described above, it has the following effects. In the dishwasher according to the first aspect, the door is locked so that the door cannot be opened for a predetermined time after the hot water injection of the rinsing means is completed, so that the door is opened after the rinsing is completed. Thus, the amount of steam spouting when the door is opened is reduced, and heat loss due to steam spouting can be reduced.

In the dishwasher according to the second aspect of the present invention, the door opening permission signal is output after a lapse of a predetermined time from the completion of the hot water injection by the rinsing means. Is not opened, the amount of steam spouting is reduced, and heat loss due to steam spouting can be reduced.

Further, the dishwasher according to the third aspect of the present invention outputs a door closing instruction signal when the door is opened for a long time after the door is opened and the tableware is taken out after completion of the hot water injection by the rinsing means. As a result, the door is not left open for a long time, and the heat loss from the cleaning chamber can be reduced to prevent an increase in heat loss.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a first embodiment of the present invention.

FIG. 2 is a timing chart showing a relationship between a cleaning and rinsing process and an energizing period of a solenoid.

FIG. 3 is a diagram showing a state where dishes are being washed by a dishwasher;

FIG. 4 is a diagram showing a state in which tableware having been washed by a dishwasher is being rinsed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Wash nozzle 2 ... Rinse nozzle 3 ... Water pipe 4 ... Rinse water pipe 5 ... Wash water tank 6 ... Wash pump 7 ... Overflow drain pipe 8 ... Rinse water tank 9 ... Rinse pump 10 ... Water collecting tank 11 ... Door 12 Solenoid 13: Lock fitting 14: Support shaft 15: Spring

Claims (3)

[Claims] 1. A washing room which is opened and closed by a door to store dishes, washing means for spraying washing water in which a detergent is mixed into hot water to the dishes in the washing chamber, and dishes having been washed by the washing means. A dishwasher comprising: a rinsing means for injecting hot water; and a locking means for locking the door so that the door cannot be opened for a predetermined time after the rinsing means has finished injecting hot water. 2. A washing room which is opened and closed by a door to store dishes, washing means for injecting washing water in which detergent is mixed into hot water to the dishes in the washing chamber, and dishes having been washed by the washing means. A dishwasher comprising: a rinsing means for injecting hot water; and a door opening instruction means for outputting a door opening permission signal after a lapse of a predetermined time after the rinsing means has finished injecting hot water. 3. A washing room which is opened and closed by a door to store dishes, washing means for injecting washing water in which a detergent is mixed into hot water to the dishes in the washing chamber, and dishes having been washed by the washing means. A rinsing means for injecting hot water, and a door for outputting a door closing instruction signal when the door is opened even after a predetermined time has elapsed after the door is opened and the tableware is taken out after the hot water injection of the rinsing means is completed. A dishwasher comprising closing instruction means.