JP3118301B2 - Tableware dryer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dish dryer and, more particularly, to hot air generated by a hot air generator, which is supplied to a drying chamber, and exhaust air from the drying chamber is sent to a heat exchanger to cool and dehumidify the hot air. The present invention relates to a device having a circulation air path returning to a wind generator.

[0002]

2. Description of the Related Art Conventionally, this kind of tableware dryer is disclosed, for example, in Japanese Patent Publication No. 57-27673 (A47L19 / 00). Since a supply hole for the wind and a recovery hole for collecting the cooled air in the hot air generator are provided, the warm air supplied to the drying chamber is recovered from the recovery hole without sufficiently passing through the drying chamber, There was a problem that the warm air could not sufficiently contribute to the drying, resulting in poor drying efficiency.

[0003]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above circumstances, and a dish dryer in which warm air supplied to a drying chamber sufficiently flows through the drying chamber to contribute to drying. The task is to provide

[0004]

SUMMARY OF THE INVENTION According to the present invention, a hot air generated by a blower comprising a motor and a blade, and a hot air generating device comprising a heater and the blower is supplied from a hot air discharge port to a drying chamber. A circulating air passage that sends exhaust gas from the drying chamber to a heat exchanger through a recovery passage, cools and dehumidifies the air, and then returns the heated air to the hot air generator. In a dish dryer having an air passage for cooling the dish, the hot air discharge port is opened forward toward the back side of the bottom of the drying chamber, and the opening of the recovery passage into the drying chamber is a drying chamber. The motor is located in the upper part on the back side, and the motor is located upstream of the heat exchanger in an air passage through which outside air is taken.

Further, the hot air discharge port and the opening of the recovery passage into the drying chamber are formed by shifting their respective positions in the left-right direction when viewed from the front.

[0006]

[Function] The outlet of the warm air is opened toward the back at the bottom of the drying chamber toward the front, while the opening of the recovery passage into the drying chamber is located at the upper part on the back side of the drying chamber. The warm air blown toward the front side from the back side once reaches the front side, rises and goes to the back side, so that the warm air is evenly distributed in the drying chamber and then discharged from the collection passage.

Here, if the positions of the hot air discharge port and the opening of the recovery passage into the drying chamber are shifted in the left-right direction when viewed from the front, the time from when hot air is supplied to when it is discharged can be extended. Hot air spreads evenly throughout the drying room.

[0008]

FIG. 1 is a front vertical sectional view of a tableware dryer. The dryer is divided into a drying room 1 for accommodating tableware to be dried and a machine room 2 containing a hot air generator and the like. Inside the drying chamber 1, cupboards 3, 4 for disposing tableware S such as dishes as shown by a chain line are provided. The upper cupboard 4 is hung from the ceiling of the drying room. The front of the drying chamber 1 is opened and opened and closed by a door 5. M is for discussion.

The machine room 2 includes an upper case 6 and a lower case 7. An air passage 8 is formed in the machine room 2. The air passage 8 is divided into an upper air passage 11 and a lower air passage 12 by a partition plate 9 and a heat exchanger 10 described later in detail. 13 is a blower with a motor
It has a large circulation blade 15 and a small cooling blade 16 rotated by 14, the circulation blade 15 is located in the upper air passage 11,
The cooling blades 16 are located in the lower air passage 12. Circulation blade 11
And the cooling blades 12 are integrally formed. The motor 14 is
It is fixed to a cooling fan casing 17 mounted below the partition plate 9. The partition plate 9 is fixed to an upper air passage side wall 18 which is suspended from the upper case 6.

A heater 19 is disposed on the discharge side of the circulation blade 15 in the upper air passage 11, and the circulation blade 15 and the heater 19 constitute a hot air generator. The air heated through the heater 19 is supplied into the drying chamber 1 from the hot air outlet 20. The hot air discharge port 20 is open toward the near side at the back of the bottom of the drying chamber (see FIG. 2). The warm air supplied to the drying chamber 1 evaporates water from the tableware S while ascending, and thereafter, the warm air is supplied to the drying chamber 1.
It returns to the suction side of the circulation blade 15 of the upper air passage 11 through the recovery passage 21 whose upper end is opened at the upper part on the rear side. The collection passage 21
The rear side wall 22 of the drying chamber 1 and a cross-sectional U-shaped air path cover 23 are formed, and the lower end thereof is an upper air path as is apparent from FIG.
It is communicated to the back side of 11.

On the suction side of the circulation blade 15 of the upper air passage 11,
A heat exchanger 10 is provided so as to partition the upper air passage 11 and the lower air passage 12. As is clear from the figure, the heat exchanger 10 has a single plate shape as a whole and has a corrugated cross-sectional shape, and a large number of corrugated streaks extend from the back side to the front side as is clear from FIG. After extending, it is bent toward the direction of the circulation blade 15. The inner side of the corrugation faces the lower end of the recovery passage 21, and the wind discharged from the lower end of the recovery passage 21 flows along the corrugation and is guided to the circulation blades 15. The above-described upper air passage 11, the hot air discharge port 20, the drying chamber 1, and the recovery passage 21 constitute a circulation air passage.

The heat exchanger 10 is removably inserted into and removed from the air passage 8 from behind the machine room 2. The partition plate 9 has a lower air passage.
A gutter-shaped recess 24 forming the part 12 is integrally formed, and this recess is formed.
The side edges of the heat exchanger 10 are guided by a plurality of guide pieces 25 provided at the upper end of 24 and are inserted into the air passage 8 from the opening 26 on the back side of the machine room. Lower wind path 12
Is divided into The heat exchanger 10 is made of a metal material having excellent heat conductivity, but may be a resin material. 27 is a handle provided on the heat exchanger 10.

The recess 24 communicates with the inside of the cooling fan casing 17 through a communication port 28 provided in a side wall thereof. The outside air is taken into the fan casing 17 through the outside air intake hole 29 opened in the lower case 7 by the rotation of the cooling blade 16, and the outside air is discharged into the recess 24 through the communication port 28, and is located on the recess 24. The heat exchanger 10 is cooled and exhausted to the outside through the discharge holes 30 provided on the lower surface of the recess 24 and the discharge holes 31 provided in the lower case 7.

In the heat exchanger 10, water taken from tableware is condensed on the upper surface of the heat exchanger 10 due to the cooling. A water collecting passage 32 for collecting the water is formed. The water is drained from a drain 33 provided in the water collecting passage 32. This drainage is guided by a gutter 34 to a water receiving container 35 detachably provided in the lower case 7 and stored therein. The upper case 6 is also provided with a water collecting channel 36 for collecting water drops falling from tableware, and water is guided to a water receiving container 35 from a drain port (not shown) provided in the water collecting channel 36.

Next, the operation will be described.

When the motor 14 is rotated, the two blades 15 and 16 are rotated. The rotation of the circulation blade 15 generates hot air from the heater 19, and the hot air is discharged from the hot air discharge port 20 as shown by arrows in FIGS. The hot air is discharged into the drying chamber 1 to evaporate water from the tableware while rising, and then passes through the recovery passage 21 and the upper surface of the heat exchanger 10. Here, since the outside air passes through the lower part of the heat exchanger 10 as described above, the heat exchanger is cooled, and the dried exhaust gas that passes over this is cooled, and the moisture is condensed and dried. A cycle in which the air is supplied to the circulation blade 15 and the air is heated again by the heater 19 is repeated. The condensed water passes through a drain port 33 and a gutter 34 and is collected in a water receiving container 35.

Here, the warm air discharge port 20 is open toward the back at the bottom of the drying chamber 1 toward the back, while the upper end of the recovery passage 21 is open upward at the back of the drying chamber 1. The warm air blown out toward the near side from the back side of the bottom part of the bottom once reaches the near side as shown by the arrows in FIGS. 1 to 3 and then rises to the back side. It will be exhaled from 21 and will hit the tableware sufficiently and contribute to drying.

Particularly, in this embodiment, as is apparent from FIG.
The hot air outlet 20 and the opening at the upper end of the recovery passage 21 are shifted in the left-right direction when viewed from the front.
The time from the supply from 20 to the discharge from the recovery passage 21 can be lengthened, and the warm air can more evenly pass through the drying chamber.

In addition, when used for a long period of time, water scale adheres to the heat exchanger 10, and if used without cleaning as it is, the heat exchange efficiency is reduced or an odor is generated. Can be removed by holding the handle 27 from the back side of the machine room 2, so it can be removed and cleaned,
It is possible to prevent a decrease in heat exchange efficiency and the generation of offensive odor. Since the heat exchanger 10 can be taken out from the back side of the machine room 2, there is little possibility that the child is accidentally removed by mischief.

[0020]

According to the present invention, the hot air discharge port and the opening of the recovery passage to the drying chamber are devised, so that the warm air discharged to the drying chamber sufficiently passes through the drying chamber for drying. Can contribute to improve drying efficiency,
By locating the motor upstream of the heat exchanger in the airflow through which outside air is taken, the cooling efficiency of the motor can be improved and the life can be extended.

[Brief description of the drawings]

FIG. 1 is a front vertical sectional view of a dish dryer according to the present invention.

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3 is a sectional view based on line BB in FIG. 1;

FIG. 4 is a front view of the heat exchanger of the present invention.

[Explanation of symbols]

 15 Circulation blades (warm air generator) 19 Heater (warm air generator) 1 Drying room 10 Heat exchanger 16 Cooling blades 11 Upper air passage (circulation air passage) 20 Hot air discharge port (circulation air passage) 21 Collection Passage (circulating airway)

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A47L 19/00 D06F 58/02

Claims (2)

(57) [Claims] 1. A hot air generated by a blower comprising a motor and a blade, and a hot air generator constituted by a heater and the blower, is supplied from a hot air discharge port to a drying chamber, and exhaust air from the drying chamber is discharged. A circulating air passage that is sent to the heat exchanger via the recovery passage, cooled and dehumidified and then returned to the hot air generator, and an air passage provided at a position opposite to the circulating air passage for cooling the heat exchanger with outside air Wherein the warm air discharge port is opened toward the back of the bottom of the drying chamber toward the front, the opening of the recovery passage to the drying chamber is positioned at the top of the back of the drying chamber, motor, that is located upstream of the heat exchanger in the air passage outside air is introduced
Characteristic tableware dryer. 2. The dishwasher according to claim 1, wherein the hot air discharge port and the opening of the recovery passage into the drying chamber are shifted from each other in the left-right direction when viewed from the front. .