JPH0542094A - Tableware drier - Google Patents

Abstract

PURPOSE:To achieve a lower cost while holding down a rise in the temperature of a motor below a reference value by arranging the motor in a circulation path outside the machine, in the type of driving a fan for air circulation in a drying chamber and a fan for air circulation outside the machine by single motor. CONSTITUTION:With a fan 27 for air circulation in a cleaning chamber air in the cleaning chamber 3 is sucked out of an air suction port 14 and made to contact a heat exchanger 19 through an air circulation path 21 in the cleaning chamber to be returned into the cleaning chamber 3 where a heater 12 exists from an air inflow port 15 in a circulation. On the other hand, with a fan 28 for air circulation outside the machine, the air outside the machine is sucked at an outside air suction port 22 and made to contact the heat exchanger 19 through an air circulation path 26 outside the machine to be returned outside the machine from the outside discharge port 23. Thus, at the heat exchanger 19 part, air in the cleaning chamber is dehumidified to be heated with the heater 12 and contacts table ware as hot air to dry the tableware. At this point, the air outside the machine passing through the air circulation circuit 26 outside the machine contacts a motor 29 to cool.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tableware dryer for dehumidifying dry indoor air to dry the tableware to be dried.

[0002]

2. Description of the Related Art Conventionally, tableware dryers have been provided in which dry room air is dehumidified to dry tableware to be dried.

As one of them, JP-A-63-31892
The device disclosed in Japanese Patent No. 5 discloses a method for circulating air in a drying chamber by a fan for circulating air in the drying chamber driven by a motor.
It circulates by passing through the drying room air circulation path to contact with the heat exchanger and further heating by a heater to circulate, while the outside air naturally passes through the outside air circulation path and also contacts with the heat exchanger to circulate. As a result, the dry room air is dehumidified by exchanging heat with the outside air in the heat exchanger part.

[0004] In the case of this product, there is an advantage that moisture, odor, and noise do not go out of the machine during operation and can be used comfortably.
However, since the air outside the machine is only naturally circulated, the heat exchange efficiency of the drying room air is poor, and it takes a long time to finish drying the tableware to be dried.

On the other hand, there is a type in which the external air circulation is forcibly performed by an external air circulation fan driven by a motor. In the case of this type, driving the outside air circulation fan and the drying room air circulation fan by separate motors would increase the cost, so generally both fans are driven by one motor. There is.

[0006]

However, in the case of the above-mentioned one, since both fans are driven by one motor, the temperature rise of the motor is large, and in order to keep it below the reference value It is necessary to use a motor with a margin or to provide a cooling fan for cooling the motor separately, and in any case, there is a problem that the cost is inevitable.

The present invention has been made in view of the above circumstances. Therefore, an object of the present invention is to drive a drying room air circulation fan and an outside air circulation fan by a single motor. On the other hand, it is possible to suppress the temperature rise of the motor below the reference value without using a motor with a margin or providing a cooling fan for cooling the motor separately, and it is possible to reduce the cost. To provide an excellent tableware dryer.

[0008]

In order to achieve the above object, in the tableware dryer of the present invention, a heater, a heat exchanger, a drying chamber air circulation path are provided for a drying chamber in which tableware to be dried is placed. And an external air circulation path, and a drying indoor air circulation fan that circulates the air in the drying chamber through the drying indoor air circulation path to a heat exchanger for heating and circulation by a heater, and the outside air. An external air circulation fan that circulates by contacting the heat exchanger through the external air circulation path and a motor that drives both fans are provided, and the motor is located in the external air circulation path. Is characterized by.

[0009]

According to the above-mentioned means, the motor can be cooled by the external air circulating fan by the external air circulating fan. In other words, the external air circulating fan can drive the motor. It will also function as a cooling fan.

[0010]

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 FIG.

In FIG. 1, reference numeral 1 denotes an outer box of the entire dish washer (dish dryer), in which a washing chamber 3 which is also a drying chamber is formed by an inner box 2 and the washing is performed on the front part. An entrance / exit 4 for inserting and removing uncleaned dishes (dry dishes) is formed in the chamber 3, and a door 5 for opening / closing the entrance 4 is pivotally provided.

Inside the washing chamber 3, dish baskets 6 and 7 in which the dishes to be washed are placed, and a fountain arm for spraying washing water on the dishes to be washed in the dish baskets 6 and 7 at the time of washing and rinsing 8 and 9 are arranged above and below, respectively. or,
At the bottom of the cleaning chamber 3, a water storage unit 10 and a cleaning pump 1 for sucking water from the water storage unit 10 and sending the water under pressure to the fountain arms 8 and 9.
1, a heater 12 that heats water in the water storage unit 10 at the time of washing and rinsing and heats ambient air at the time of drying, and a drainage pump 13 that discharges the water in the water storage unit 10 to the outside of the machine at the time of draining. ..

An air suction port 14 is formed in the ceiling of the cleaning chamber 3, and an air inlet 15 is formed in the lower back of the cleaning chamber 3, and an air intake duct is provided between them. 16, the first casing 17, the front side of the front and rear sides partitioned by the heat exchanger 19 of the common duct 18, and the air supply duct 20 to connect the air circulation passage 21 in the cleaning chamber (drying chamber). Is forming.

On the other hand, the back plate of the outer box 1 is formed with an outside air suction port 22 in the upper part and an outside air discharge port 23 in the middle part, and the space between them is connected to the second casing 24. The remaining rear sides of the front and rear sides of the common duct 18 partitioned by the heat exchanger 19 and the exhaust port body 25 are connected to form an outside air circulation path 26.

In the first casing 17, a fan 27 for circulating air in the washing chamber (drying chamber) is arranged, while in the second casing 24,
An external air circulation fan 28 and a so-called double shaft type motor 29 for driving the fan 28 and the cleaning room air circulation fan 27 are provided, whereby the motor 29 is connected to the external air circulation path. It is located in 26.

Now, in the case of the configuration as described above,
When the operation is started, the process proceeds from “washing” to “rinsing” and finally to “drying”. At the time of this "drying", the heater 12 and the motor 29 are energized, whereby the heater 12 generates heat, and the motor 29 drives the cleaning room air circulation fan 27 and the outside air circulation fan 28. .. Then, among them, the cleaning room air circulation fan 27 sucks the air in the cleaning room 3 from the air suction port 14, passes through the cleaning room air circulation path 21, contacts the heat exchanger 19, and then from the air inlet port 15. Circulation for returning the heater 12 to the inside of the cleaning chamber 3 is performed. On the other hand, the outside air circulation fan 28 allows the outside air to flow into the outside air suction port 2
The air is sucked in from 2, and passed through the outside air circulation path 26, brought into contact with the heat exchanger 19 and returned from the outside air outlet 23 to the outside of the machine. Therefore, in the heat exchanger 19, the cleaning room air is dehumidified by exchanging heat with the outside air, and the dehumidified air is returned to the cleaning room 3 and heated by the heater 12 to be warmed. The dehumidified warm air sequentially touches the tableware to be dried, and dries it.

At this time, as described above, the outside air passing through the outside air circulation path 26 contacts the motor 29 to cool it.

As described above, according to the present configuration, the cleaning room air circulation fan 27 and the outside air circulation fan 28 are driven by one motor 29, and the outside air circulation fan 28 is used. The motor 29 can be cooled by the outside air that is passed through the outside air circulation path 26. In other words, the outside air circulation fan 28 can also function as a fan that cools the motor 29. Therefore, use a motor with a margin for the load,
It is possible to suppress the temperature rise of the motor 29 below the reference value without separately providing a cooling fan for cooling the motor, and thus it is possible to achieve cost reduction.

In contrast to the above, FIG. 2 shows a different embodiment of the present invention, in which the external air circulation fan 28 is provided inside the motor 29, and
Even in this case, the same effect as the above can be obtained.

In addition, the present invention is not limited to the embodiments described above and shown in the drawings, and can be applied to those having only the drying function without the washing function of tableware. The present invention can be implemented with appropriate changes within the scope not departing from the gist.

[0021]

As is clear from the above description, the tableware dryer of the present invention has a heater, a heat exchanger, a drying room air circulation path, and an outside air for a drying chamber in which the dried tableware is placed. In addition to having a circulation path, the drying room air circulation fan that circulates the air inside the drying room through the drying room air circulation path, contacts the heat exchanger and heats it with a heater, and circulates the air outside the machine An external air circulation fan that circulates the heat exchanger through a passage and a motor that drives both fans. The motor is provided in the external air circulation passage. In this way, the dry room air circulation fan and the outside air circulation fan are driven by a single motor, so that a motor with a sufficient load can be used or another motor can be cooled. Cooling fan Without having to only or, it is possible to suppress the temperature rise of the motor below the reference value, in which excellent effects of being able to achieve low cost can be obtained.

[Brief description of drawings]

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

FIG. 2 is a vertical sectional side view showing a different embodiment of the present invention.

[Explanation of symbols]

3 is a cleaning room (drying room), 12 is a heater, 19 is a heat exchanger, 21 is a cleaning room air circulation path (drying room air circulation path), 26 is an outside air circulation path, and 27 is a cleaning room air circulation fan. (Drying room air circulation fan), 28 is an outside air circulation fan, and 29 is a motor.

Claims (1)

[Claims] 1. A heater, a heat exchanger, a drying indoor air circulation path, and an outside air circulation path are provided for a drying room in which tableware to be dried is placed, and the air in the drying room is circulated in the drying room. A fan for drying indoor air that circulates by contacting a heat exchanger through a passage and heating with a heater, and an outside air circulation that circulates outside air by contacting the heat exchanger through the outside air circulation passage and circulating it. A tableware dryer, comprising: a fan; and a motor for driving both of the fans, the motor being provided in an outside air circulation path.