JPS63154150A - Tableware washing machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a dishwasher that sequentially performs each process of washing dishes stored in a dish basket and drying them using a heater.

(Prior Art) In a general dishwasher, the dishes are cleaned by spraying water (or hot water) from below onto the dishes stored in the dishwasher. There is.

Therefore, when placing tableware in a tableware basket, it is desirable to make sure that the jetted water hits the trigged surface of the tableware efficiently in order to improve the cleaning performance. For this reason, conventionally, a support member for supporting the tableware stored in the tableware basket in an inclined state is provided in the tableware basket.

(Problems to be Solved by the Invention) However, when the dishes are stored in a tilted state in the dish basket as in the conventional tM configuration described above, water remains at the bottom of the dishes after washing the dishes. .

Therefore, in the drying process, it takes a long time to dry the accumulated water, resulting in a disadvantage that the drying performance deteriorates.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a dishwasher that can simultaneously improve the washing performance in the dishwashing process and the drying performance in the drying process after washing.

[Configuration of the Invention (Means for Solving Problems)] The present invention provides a dishwasher that sequentially performs each process of washing dishes stored in a dishbasket and drying them using a heater. It is characterized by the provision of a thermally responsive member made of a shape memory material that supports the tableware and detects the temperature in the washing tank to change the storage form of the tableware.

(Function) When the drying process of the tableware by the heating heater is started and the temperature in the washing tank rises, the heat-responsive member made of a shape memory material that detects the temperature changes the storage form of the tableware in the tableware basket. Due to such a change in the storage form and the vibration at this time, the water accumulated on the thread bottom of the tableware is dripped, and the amount of water adhering to the tableware is reduced, so that the drying time of the tableware is shortened.

(Example) An example of the present invention will be described below with reference to the drawings.

First, in FIG. 4, reference numeral 1 denotes an outer box, inside which a washing tank 2 is disposed, and the bottom of this washing fp tank 2 has a storage part 2a for storing water for washing detergent and rinsing. It becomes. 3 is a door that opens and closes the front opening of the cleaning tank 2; 4.
Reference numeral 4 indicates two injection arms, for example, which are disposed at the bottom of the cleaning tank 2. Reference numeral 5 designates a pump disposed within the reservoir 2a, which is driven by a drive motor 6 to rotate in forward and reverse directions via a belt transmission mechanism 7, and when rotating in the forward direction, rotates a blade 8 to pump the reservoir. The water in the storage part 2a is sucked and applied as pressure water to the injection arms 4, 4 via the piping 9.9, and when rotating in reverse, the water in the storage part 2a is sucked out by rotating the blades 10. It is designed to be discharged to the outside via a drain pipe 11. Reference numeral 12 denotes an upper tableware basket, which will be described later, and 13 denotes a lower tableware basket. These are arranged so as to be able to be taken in and out of the washing tank 2, and are positioned above the injection arms 4, 4. As a result, water from the spray arm 4.4 is sprayed onto the dishes (not shown) stored in the dish baskets 12.13. Reference numeral 14 denotes a water supply pipe provided on the outside of the cleaning tank 2, which is connected to a water supply source (not shown) and has a tip opening 14a facing into the cleaning tank 2. A water supply valve 15 is provided in the middle of this water supply pipe 14.

Reference numeral 16 denotes a heater such as a sheathed heater disposed at the inner bottom of the cleaning tank 2, which heats the water in the reservoir 2a to perform hot water cleaning or hot water rinsing, and also to This is for drying the tableware. Reference numeral 17 denotes an intake pipe provided at the outer bottom of the cleaning tank 2, with its tip end 17a facing into the reservoir 2a, so that it can be used during the drying operation by the sheathed heater 16 described in 1-. Outside air is introduced into the cleaning TFI 2.

Now, the upper tableware basket 12 will be described in detail with reference to FIGS. 1 to 3. The upper tableware basket 12 is generally constructed by combining wire rods in a lattice shape, and has a number of support parts 18, which are thermally responsive members, erected at the bottom thereof. The supporting portion 18 of this prop has a substantially U-shape, for example, and a bottom portion 18a fixed to the bottom of the upper tableware basket 12.
and thermally responsive parts 18b made of a shape memory material such as a shape memory alloy, provided at both ends of the bottom part 18a, respectively.
It consists of an extension part 18c extending upward from this point. The supporting portion 18 of this prop is always inclined diagonally upward as shown in FIG. When the temperature exceeds a predetermined temperature, the heat-responsive portion 18b made of a shape memory alloy is deformed so as to be oriented in a substantially vertical direction (indicated by a two-dot chain line in FIG. 1).

Next, the action of -I:, structural acid will be explained. First, the two-part tableware basket 12 is supported by the supporting part 18 (see the solid line in Figure 1), and the tableware is stored at an angle.
- Immediately store in the tableware basket 12. Like this one, wash the two-part tableware basket 12! i 2, and the detergent necessary for one wash is put into the washing tank 2.

When a start switch (not shown) is operated, the water supply valve 15 is opened and a predetermined amount of water is supplied to the reservoir 2a of the cleaning tank 2. Thereafter, the drive motor 6 is energized to drive the pump 5 in forward rotation, and the rotation of the blades 8 causes the storage part 2 to
The water in a is sprayed from the spray arm 4.4 towards the tableware, and the detergent washing operation is started. At this time, since the tableware is tilted by the support part 18, the detergent solution, which is a mixture of water and detergent in the washing tank 2, can efficiently hit the dirty surface of the tableware. Oil and other stains adhering to the surface can be effectively washed off.

When the detergent washing operation as described above is completed, the drive motor 6
is energized in the opposite direction, the pump 5 is driven to rotate in the opposite direction, and the rotation of the blades 10 sucks the water in the reservoir 2a, that is, the dirty detergent solution, and discharges it through the drain pipe 11, after which the rinsing operation begins. do.

In this rinsing operation, the same operation as the detergent washing described above is performed without using detergent. First, the water supply valve 1 is
5 is opened, water is supplied into the cleaning tank 2 at a specified rate, and the pump 5 is driven to spray water in the cleaning tank 2 into the injection arm 4.4.
A rinsing operation with clean water is performed by spraying water from the tank.

At this time as well, since the tableware is tilted by the support portion 18, the water jet can efficiently hit the tableware.

After this rinsing operation, water is drained by the pump 5,
This completes the tableware washing process. Thereafter, the tableware drying process, that is, the drying operation by the sheathed heater 16 is performed for an appropriate time. In this case, when the temperature inside the cleaning tank 2 rises due to heating by the sheathed heater 16 and exceeds a predetermined temperature, the upper tableware basket 12 is propped up so that the heat-responsive part 18b made of a shape memory alloy in the support part 18 reaches the temperature above the predetermined temperature. is detected and deformed into a state oriented in the vertical direction shown by the two-dot chain line in FIG.

As a result, the storage form of the tableware in the upper tableware basket 12 is changed, and water that has accumulated at the thread bottom of the tableware is dripped, reducing the amount of water adhering to the tableware, thereby increasing the drying time of the tableware. is shortened. Further, when the storage form of the tableware changes as described above, the change occurs relatively rapidly and the tableware vibrates, so that the water dripping is reliably carried out.

In this way, according to this embodiment, in the washing process, the dish basket 1
Since the tableware stored in the container 2 is tilted and the tableware is automatically changed to a vertical position during the drying process, it is possible to improve the cleaning performance during the washing process and also improve the cleaning performance during the drying process. Drying time can be shortened and drying performance can be improved compared to conventional methods. In addition, the support part 18 is supported by a bottom part 18a1 and a thermally responsive part 18b made of a shape memory alloy.
and the extension part 18c, the sensor for detecting the temperature inside the washing tank 2 and the operating mechanism for changing the storage form of tableware can be realized in a simple manner (J3 construction).

In addition, in the two-legged embodiment, the support part 18 of the support part 18 is formed into a substantially U-shape, but the structure is not limited to this, and various modifications can be made as long as the structure can support tableware. .

Further, although the support portion 18 is provided only on the upper tableware basket 12, it may be provided on the lower tableware basket 13. Furthermore,
Instead of using a shape memory alloy as the shape memory material, a so-called shape memory polymer may be used.

[Effects of the Invention] As is clear from the above description, the present invention provides a heat-responsive member made of a shape memory material that supports dishes in a dish basket, detects the temperature in the washing tank, and changes the storage form of the dishes. This has the excellent effect of simultaneously improving the cleaning performance in the tableware washing process and the drying performance in the drying process after washing.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a side view of the upper dish basket, FIG. 2 is a plan view of the upper dish basket, FIG. 3 is a front view of the upper dish basket, and FIG. The figure is a longitudinal sectional view of the entire structure. In the drawing, 2 is the washing tank, 12 is the upper dish basket (dish basket)
, 16 is a sheathed heater (heater), and 18 is a support portion (thermally responsive member). Applicant: Toshiba Corporation Figure 1 Bird 2 Figure 32 Younger brother 4

Claims (1)

[Claims] 1. In a dishwasher that sequentially performs each process of washing dishes stored in a dish basket and drying them using a heater, a device is installed in the dish basket to support the dishes and detect the temperature in the washing tank. A dishwasher characterized by being equipped with a heat-responsive member made of a shape memory material that changes the storage form of dishes in the dishwasher.