JPH028730B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a dish dryer, and is particularly suitable for use in a hot-air dish dryer, etc., and is equipped with a circulation path for circulating air in a dish storage box. Regarding tableware dryers.

[Conventional technology]

Conventional dish dryers are known to introduce only outside air through a filter, raise its temperature with a heater, and blow it out into the dish storage box, but in this type the filter clogged. In this case, the amount of outside air introduced decreases, resulting in a drop in drying performance, and since only low-temperature outside air is introduced, the temperature inside the tableware storage box does not rise, resulting in insufficient drying performance. The disadvantage is that it requires a large amount of electricity.

Therefore, we introduced outside air through a filter and simultaneously introduced air from inside the drying chamber through a circulation port that has an opening inside the tableware storage box, allowing some of the air inside the tableware storage box to circulate. A possible example is a dish dryer.

[Problem to be solved by the invention]

However, in such dish dryers, the temperature of the air passing through the blower increases, so if a motor is installed on the suction side of the blower, the temperature of the motor will rise, making it necessary to use an expensive heat-resistant motor. There was a problem that it had to be done.

[Means to solve the problem]

The present invention has been made in order to solve such problems, obtain sufficient drying performance, and reduce power consumption. , a blower 11 disposed below the tableware storage box 2, and a motor 1 disposed on the suction side of the blower 11 to drive the blower 11.
2, covering the motor 12 and the blower 11
A fan cover 22 forming a suction path, and a casing 1 of the blower 11 that
1a, an auxiliary suction port provided facing the outer periphery of the motor 12, a fan auxiliary filter 23 provided at the auxiliary suction port, a heater 13 provided at the outlet of the blower 11, and the outer frame. 1, an intake duct 24 that communicates air from the intake port 28 to the blower 11, and an intake duct 24 that communicates with the intake duct 24 and that is provided at the bottom of the tableware storage box 2. Circulation port 21;
The dish dryer is characterized in that it is equipped with an air outlet 9 communicating with the air blower 11 and provided at the bottom of the tableware storage box 2, and a main filter 26 provided at the air intake port 28.

[Effect]

In such a dish dryer, when the drying operation starts, the air blower 11 operates to open the air intake port 28 - main filter 26 - air intake duct 24 - fan cover 2.
At the same time, dry outside air is taken in through the path 2 and the fan auxiliary filter 23, and at the same time, from the circulation port 21 provided at the bottom of the tableware storage box 2, the tableware is stored through the air intake duct 24-fan cover 22 path. Part of the air inside box 2 can also be taken in. After these are mixed in the blower 11, the heater 1
3 becomes hot air, which is discharged from the air outlet 9 into the tableware storage box 2. During this time, the air inside the tableware storage box 2 continues to be sucked through the circulation port 21, and a circulation path for the air inside the tableware storage box 2 through the above-mentioned path is formed. In this way, by providing a circulation path that not only sucks, heats, and blows only the outside air, but also sucks, heats, and blows some of the air inside the tableware storage box 2, the drying operation progresses and the dishes are As the temperature of the air inside the storage box 2 becomes higher, the temperature of the air blown to the heater 13 becomes higher than when only outside air is sucked in, and therefore the air after passing through the heater 13 becomes higher. temperature also increases. And as a result, tableware storage box 2
The temperature inside will also be higher than if there is no circulation path.
Furthermore, since the temperature of the air blown to the heater 3 is high, the power consumed by the heater 13 is also reduced compared to the case where there is no circulation path. In addition, if the main filter 26 becomes clogged, the temperature inside the tableware storage box 2 will decrease because the amount of air that carries the heat generated by the heater 13 into the tableware storage box 2 will decrease if the main filter 26 does not have a circulation path. Compared to the drying device with a circulation path, the amount of air that transports the heat generated by the heater 13 to the dish storage box 2 does not change much, so the temperature inside the dish storage box 2 also has good drying performance. Increase the temperature necessary to obtain .

In this way, when the temperature inside the tableware storage box 2 becomes high and a circulation path is configured, the temperature rise of the motor 12 located in the circulation path becomes a problem. Since the outside air is taken in around the motor 12, the motor 12 can be cooled with this outside air, and an increase in the temperature of the motor 12 can be prevented. Therefore, an inexpensive motor 12
can be placed on the suction side of the blower 11.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 5. In Figures 1 and 2, a tableware storage box 2 is attached to an outer frame 1 with screws, etc., and a door 6 is rotatably attached to the front of the tableware storage box 2 by a rotating shaft 17 provided at the bottom. ing. The door 6 is configured to open toward the front around this rotating shaft 17. A panel 3 is attached to the top of the door 6, and a timer 4 is installed inside so that the drying time can be set by operating a dial 20 from the outside. 5 is an exhaust port provided on the panel surface, which communicates with the tableware storage box 2. Inside the tableware storage box 2, there are installed an upper basket 15 and a lower basket 16 for setting tableware, etc., which can be attached and removed freely. A drain hose 7 is provided at the bottom of the tableware storage box 2 to communicate the tableware storage box 24 with a front cover 27 attached to the bottom of the main body. A water drain cap 8 is provided. A table 18 is provided at the top of the outer frame 1.
A base 19 is provided at the bottom to which casters and the like are attached. A ventilation port 9 and a circulation port 21 are provided at the bottom of the tableware storage box 2, and a cover 14 is provided to cover both. cover 14
A ventilation hole 29 is provided at the bottom of the housing. The front cover 27 is provided with an intake port 28.
A main filter 26 is attached to the inside of the intake port 28 by a filter holder 25. A blower 11 is installed at the outer bottom of the tableware storage box 2 and is driven by a motor 12. Motor 1
2 is placed on the suction side of the blower 11. The fan cover 2 is arranged to form a suction path for the blower 11.
2 is provided. This fan cover 22 is attached to the casing 11a of the blower 11 so as to cover the motor 12. A motor 12 is located between the fan cover 22 and the casing 11a.
An auxiliary suction port is provided opposite to the outer periphery of the auxiliary suction port.
A fan auxiliary filter 23 is provided at this auxiliary suction port. An intake duct 24 communicating with the main filter 26 and the circulation port 21 is attached to the fan cover 22 so as to fit therein. A heater 13 is provided at the outlet of the blower 11, and the blower 11 and the tableware storage box 2 are communicated with each other by a blower pipe 10 connected to fit into the blower opening 9.

Next, its operation will be explained. For tableware dryers, place the dishes, etc. that have been rinsed outside the dryer in the upper basket 15.
After setting the tableware in the lower basket 16 and storing it in the tableware storage box 2 and closing the door 6, the device operates for a time set by the timer 4 to dry the tableware and the like in the tableware storage box 2. When the dishes are stored, water dripping from the dishes placed in the upper basket 15 and lower basket 16 collects at the bottom of the tableware storage box 2, but this dripping water is prevented from entering the ventilation opening 9 and the circulation opening 21. One of the functions of the cover 14 is to cover the ventilation opening 9 and the circulation opening 21. In addition, the air outlet 9 and the circulation port 21 are set higher than the bottom of the tableware storage box 2, as shown in FIG. . When the drying operation starts, the blower 11 works to open the air inlet 28-
Dry outside air is taken in through the path of the main filter 26 - intake duct 24 - fan cover 22 and the fan auxiliary filter 23, and at the same time, from the circulation port 21 provided at the bottom of the tableware storage box 2.
A portion of the air inside the tableware storage box 2 is also taken in through the path between the intake duct 24 and the fan cover 22. After these are mixed in the blower 11 , they pass through the heater 13 to become hot air, which is then discharged into the tableware storage box 2 from the air outlet 9 through the air pipe 10 .

The direction of the hot air sent to the air outlet 9 is changed by the cover 14, and part of the hot air is blown to the center of the tableware storage box 2 through the air hole 29, and the rest is blown through the gap between the tableware storage box 2 and the cover 14. be done. During this time, the air inside the tableware storage box 2 continues to be sucked through the circulation port 21, and a circulation path for the air inside the tableware storage box 2 through the above-mentioned path is formed. On the other hand, the air directed upward and downward passes through the lower basket 16 and the upper basket 15, heats and dries the dishes, and is then discharged to the outside of the machine from the exhaust port 5. In this way, only outside air is sucked,
By providing a circulation path that not only heats and blows air, but also sucks, heats, and blows some of the air inside the tableware storage box 2, the drying operation progresses and the temperature of the air inside the tableware storage box 2 increases. As the temperature increases, the temperature of the air blown to the heater 13 becomes higher than when only outside air is sucked in, and therefore the temperature of the air after passing through the heater 13 also becomes higher.
As a result, the temperature inside the tableware storage box 2 also becomes higher than when there is no circulation path. Also,
Since the temperature of the air blown to the heater 13 is high, the power consumed by the heater 13 is also lower than when there is no circulation path. Also, main filter 2
6 becomes clogged, the temperature inside the dish storage box 2 will not rise much because the amount of air that transports the heat generated by the heater 13 to the dish storage box 2 will be reduced in those without a circulation path. In contrast, with the type equipped with a circulation path, the amount of air that transports the heat generated by the heater 13 into the dish storage box 2 does not change much, so the temperature inside the dish storage box 2 can also achieve good drying performance. temperature rises to the required temperature. By the way,
Figures 3, 4, and 4 show the results of comparing the temperature, power consumption, and drying performance inside the dish storage box 2 of a prototype dish dryer with a circulation path and a dish dryer without a circulation path. It is shown in FIG. As is clear from FIG. 3, FIG. 4, and FIG. Performance is improving.

In this way, when the temperature inside the tableware storage box 2 becomes high and a circulation path is configured, the temperature rise of the motor 12 located in the circulation path becomes a problem. Since the outside air is taken in around the motor 12, the motor 12 can be cooled with this outside air, and an increase in the temperature of the motor 12 can be prevented. Therefore, an inexpensive motor 12
can be placed on the suction side of the blower 11.

〔Effect of the invention〕

According to the present invention, even if the filter that introduces outside air becomes clogged, it is possible to increase the temperature inside the tableware storage box, so good drying performance can be obtained, and the temperature of the air blown to the heater can be increased. Therefore, it is possible to provide a dish dryer that has good drying performance when the temperature inside the dish storage box is high, has low power consumption, and can prevent the temperature of the motor that drives the blower from rising.

[Brief explanation of drawings]

Fig. 1 is a longitudinal cross-sectional view of a dish dryer incorporating an embodiment of the present invention, Fig. 2 is a longitudinal cross-section of the area around the blower at the bottom of the dish storage of the dish dryer, and Fig. 3 is a longitudinal cross-sectional view of a dish dryer incorporating an embodiment of the present invention. A comparison graph of the temperature inside the dish storage box of a dish dryer incorporating one embodiment and a dish dryer without the built-in example. Figure 4 is a comparison graph of power consumption. It is a table comparing maximum temperature and drying rate. 1... Outer frame, 2... Tableware storage and heat storage box, 9... Ventilation port, 11... Air blower, 21... Circulation port, 24...
Intake duct, 26...Main filter, 27...Front cover, 28...Intake port, 23...Fan auxiliary filter, 11a...Casing.

Claims (1)

[Claims] 1 An outer frame 1, a tableware storage box 2 provided in the outer frame 1, a blower 11 placed below the tableware storage box 2, and a blower 11 placed on the suction side of the blower 11 to drive the blower 11. A motor 12, a fan cover 22 that covers the motor 12 and forms a suction path for the blower 11, and the fan cover 22.
and a casing 11a of the blower 11, an auxiliary suction port provided facing the outer periphery of the motor 12, a fan auxiliary filter 23 provided at the auxiliary suction port, and a heater provided at the outlet of the blower 11. 13, an intake port 28 provided in the front cover 27 of the outer frame 1, an intake duct 24 that communicates air from the intake port 28 to the blower 11, and an intake duct 24 that communicates with the intake duct 24 and the tableware storage box 2.
A circulation port 21 provided at the bottom of the tableware storage box 2, a ventilation port 9 communicating with the exhaust side of the blower 11 and provided at the bottom of the tableware storage box 2, and a main filter 26 provided at the intake port 28. A dish dryer featuring: