JPS637022Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a household dish dryer, in particular,
It is characterized by the configuration of the heating chamber that sends hot air into the tableware storage.

In this type of dish dryer, which uses hot air to dry washed dishes, drying efficiency is important relative to the amount of heat generated by the heat source such as an electric heater.
In order to prevent uneven drying, it is desirable that there be no temperature differences at various locations within the tableware storage.

By the way, in this type of conventional dish dryer, warm air is blown toward an electric heater as a heat source and blown into the dish storage.
And in such a configuration, first of all,
The heat exchange efficiency of the heat source that receives the air and the uniformity of the hot air circulation path inside the tableware storage are problems in the device configuration, and in the case of small home-use devices, due to the space required to incorporate the mechanism, it is difficult to use a blower fan. When facing a heat source, care must be taken to protect the fan and motor from radiant heat.

Therefore, the present invention provides an apparatus configuration that can solve the technical problems of this type of dish dryer as described above all at once.

That is, in the dish dryer of the present invention, the heat source and An air blowing diffusion plate is interposed between the fan and the heat exchange fan.

The illustrated embodiment will be described in detail below.

FIG. 1 is a perspective view showing an example of the dish dryer of the present invention, which consists of a storage compartment 2 in which tableware can be put in and taken out by opening the front hinged door 1 made of transparent resin, and a bottom part 3 of the storage compartment 2. A warm air outlet 4 is provided along the inner side of the bottom surface, and partition shelves 5 are appropriately arranged inside the refrigerator. An operating section 6 such as a power switch and a timer is arranged on the front surface of the bottom section 3, and inside thereof, as shown in the plan view of the second figure, there is a heating chamber 7 made of a metal plate and a heating chamber 7 integrated therewith. The assembled fan motor 8 is stored here.

As shown in the configuration diagrams shown in FIGS. 2 and 3, this heating chamber 7 is a component 4' of the hot air outlet 4.
, two rod-shaped electric heaters 9 , 9 horizontally installed along this, and a fan 10 directly connected to the drive shaft of the motor 8 are arranged in this order.

between the fan 10 located at the center of the rod-shaped electric heaters 9, 9 and the heaters 9, 9;
An air diffuser plate 1 hanging down from the top plate 11 of the chamber 7
2 is coming. Others 13 indicate intake holes.
Note that the width of this air diffusion plate 12 is the same as that of the fan 10.
The heating chamber 7 is made of a flat metal plate whose length is approximately 3/4 of the thickness of the heating chamber 7.

According to the dish dryer of the present invention having such a configuration, during use, a part of the air flow sucked through the intake hole 13 by heating the heater and rotating the fan 10 driven by the motor is transferred to the front side of the fan 10. Hitting the diffuser plate 12, avoid this and move the plate 1
It spreads on both sides of 2 and below, hitting red-hot electric heaters 9, 9. As a result, the airflow turns into warm air and heads toward the component 4' of the hot air outlet 4.
At this time, in order to equalize the amount of air blown over the entire area of the electric heaters 9, 9, an appropriate amount of air is blown over the entire area, and as a result, heat exchange by air blown can be performed extremely well.

Moreover, from the component 4' of the outlet 4,
Since the hot air with uniform air flow rate and temperature is blown out from the horizontally wide opening groove in a substantially uniform manner, the hot air circulation path inside the dish storage cabinet 2 is constant depending on the state and quantity of dishes stored in the dish storage cabinet 2. By uniformly blowing out warm air from a wide outlet in this type of refrigerator, the temperature of various parts of the refrigerator can be kept constant.

By the way, when the internal volume of the tableware storage is 0.6m ³ , the electric heater is 450W (with thermostat), the tableware is stored in standard conditions, and the air diffuser plate 12 is not installed, the temperature at the center of the inside will change over time. The temperature changes as shown in Figure 4, and the high temperature part (deep center of the top plate inside the refrigerator) and the low temperature part (lower corner of the front door inside the refrigerator) at various locations inside the refrigerator have a temperature of ±7°C with respect to the center temperature.
Although there were differences in degree, when the air blowing diffuser plate 12 (a flat plate with a width of 90 mm and a length of 60 mm) according to the present invention was provided, the temperature at the center of the refrigerator reached the fourth level as shown in Figure 5.
The temperature is increased by 6℃ to 10℃ compared to the example shown, and the temperature difference between the high temperature part and the low temperature part of the refrigerator is reduced by ±2.
Can be maintained at around ℃.

This means that when the air diffuser plate 12 is not provided, the central portions of the electric heaters 9, 9, which are locally strongly exposed to the air blown by the fan 10, are well cooled.
That is, although the heat exchange rate is high, the heat exchange rate of the electric heaters 9, 9 located on the sides of the heating chamber 7 is low, so the heating chamber 7 itself is slightly heated, and the Although a large amount of warm air blows out from the center, it is assumed that the temperature in the corners of the refrigerator is significantly lower due to the poor internal circulation path.

In addition, by providing a plate-shaped, net-shaped, or blind-shaped air blowing diffusion plate 12 on the front surface of the fan 10, the radiation heat from the electric heaters 9, 9 is blocked by the plate 12, and the fan 10 and the motor 8 are can prevent adverse effects on

As described above, the dish dryer of the present invention is an extremely simple method in which a flat air diffusion plate made of a single plate slightly larger than the fan is arranged between the air blowing fan and the heat source facing the fan. Depending on the configuration, it is possible to increase the heat exchange rate by air blowing, and it is also possible to stabilize the air volume and temperature from the hot air outlet that opens widely in the tableware storage, resulting in an increase in the internal temperature (high efficiency) and It is possible to unify the temperature inside the refrigerator, and
This type of configuration is extremely effective since it can also prevent the adverse effects of radiant heat from blowing fans and the like.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the dish dryer of the present invention, Fig. 2 is a plan view of the bottom part of the dish dryer incorporating the heating chamber, and Fig. 3 is a configuration showing an embodiment of the heating chamber. Figure 4 is a diagram of the internal temperature characteristics of a dish dryer not equipped with an air diffusion plate, and Figure 5 is
The figure is a characteristic diagram showing the internal temperature of the dish dryer of the present invention. 1... Front swinging door, 2... Tableware storage, 3...
Bottom, 4... Hot air outlet, 7... Heating chamber, 9...
...Electric heater, 10...Fan, 12...Blower diffuser plate.

Claims (1)

[Scope of utility model registration request] In a heating room in which a hot air outlet leading to the tableware storage, a heat source such as an electric heater, and a heat exchange fan that blows air toward the heat source are sequentially installed, the width is approximately equal to the diameter of the fan 10. A flat air blowing diffusion plate 12 made of a single plate with a vertical length of about 3/4 of the thickness of the heating chamber 7 is connected to the heat source and the heat exchange fan 1.
0 at a position facing the fan 10.