JPH0551289B2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention stores dishes in a washing/drying chamber, sprays washing water with a washing pump, and then supplies drying air with a heater and a fan. This article relates to a dish washer/dryer designed to

(b) Conventional technology An example of this type of dish washer/dryer is
It is disclosed in Publication No. 112768. In the drying process after washing, this type uses a blower to suck in outside air and heats it with a heater.This drying air dries the dishes, and after drying, the drying air is discharged to the outside as appropriate. It is. The drying air discharged is high-temperature air containing steam.

On the other hand, a heat exchanger is installed in the drying air circulation path,
A type that dehumidifies moisture in dry air is disclosed in JP-A-63-43635.

(c) Problems to be solved by the invention In the former conventional example, the indoor environment of the house deteriorates due to high-temperature air containing steam, and in the latter conventional example, the hot air after heat exchange causes the hot air to enter the dryer. In addition, the air used to cool the heat exchanger is heated by the heat of the cooling fan motor, which is inefficient.

The present invention has been made in view of these problems, and provides a dehumidifying type dishwasher/dryer with high thermal efficiency that does not deteriorate the indoor environment of a house.

(d) Means for Solving the Problems The solution of the present invention is to provide an inlet and an outlet for drying air on the wall of the washing/drying chamber, and an inlet and an outlet for external air on the outer wall of the machine frame. a cooling air passage communicating with a circulation air passage communicating with the drying air inlet and outlet and the external air intake and exhaust outlet, between the room wall of the washing and drying room and the outer wall of the machine frame; Further, the circulation air passage and the cooling air passage are partitioned by a partition member facing both air passages and a double-sided fan, and the drive motor of the double-sided fan is connected to the wall of the cleaning/drying room. It is configured to be installed between the cooling air path and outside the cooling air path.

(e) Function The double-sided fan circulates drying air between the circulation air path and the drying room, and also circulates outside air to the cooling air path. Double-sided fans and partition members face both air passages, where heat is exchanged, moisture in the circulating drying air is condensed and dehumidified, and after dehumidification, the air is reintroduced into the drying chamber.

Therefore, since the drying air flowing into the drying room has a low humidity, the dishes in the room can be efficiently dried.

(F) Embodiment To explain based on the drawings, a cleaning/drying chamber 2 which is a resin molded product is disposed within a machine frame 1 made of metal.

The drying chamber 2 has an upper case 4 with a downward opening in which a top wall, both side walls and a rear wall 3 are integrally formed, and a lower case 7 in which a bottom wall 5, both side walls, a front wall and a rear wall 6 are integrally formed. It is constructed by joining. A door 8 and a panel 9 are provided at the front of the machine frame 1 and the drying chamber 2.

The upper case 4 and the lower case 7, in which a water chamber 10 for water level detection etc. is integrally formed on the rear wall 6, are integrated with adhesive or the like. An arm nozzle 12 that performs cleaning work by circulating and spraying cleaning water through the arm nozzle 11.
and a heater 13 that warms the washing water (rinsing water) and heats the indoor air to produce drying air during the drying process. In addition, a shelf for storing tableware is provided so that it can be taken in and out.

Here, the upper case 4 has a vertical duct 14 integrally formed at the lower center of the rear wall 3, and this duct 1
An upwardly cut inlet 15 is integrally formed at the lower end (joint end) of the rear wall 3 corresponding to the rear wall 3 . In addition, the upper case 4 has an outlet 16 formed in the upper part of one side of the rear wall 3, and a rib 17 directed rearward so as to surround the outlet 16 and define a U-junction near the center. It is integrally formed.
Further, bosses 18 and reinforcing ribs 19 are integrally formed at appropriate locations.

A fan casing 22 including a drive motor 20 and a double-sided fan 21 is fixed to the upper center of the rear wall 3 of the upper case 4. And suction port 23
is joined to the end of the U-shaped path formed by the rib 17, and the discharge port 24 is joined to the duct 14 from above. That is, drying chamber 2 - outlet 16 - U-junction - suction port 23
A circulating air passage 25 is constructed, which includes the following routes: - double-sided fan 21 - discharge port 24 - duct 14 - inlet 15 - drying chamber 2.

A frame 26 having an L-shaped cross section is removably fixed to the outlet 16 and deflects the drying air upward. A drain port 27 is also formed at the bottom of the U-junction, and a guard rib 28 surrounds the port 27 from above in an umbrella shape and deflects drying air.
are integrally formed at the same time.

The circulation air passage 25 includes the duct 14 and the double-sided fan 21.
The rear side is closed by a partition member 29 except for the rear surface of the main body. The partition member 29 is a plate made of metal, resin, etc. with good heat exchange performance, and the boss 18
It is fixed on...

A metal rear plate 30 covers the rear surface of the machine frame 1. This rear plate 30 forms a seat 31 that follows and comes into contact with the outer shape of the partition member 29 except for the lowest part of the U-junction, and also forms a seat 31 that abuts the double-sided fan 21.
A porous intake port 32 is formed opposite to. Further, an exhaust port 35 is formed at a portion of the bulging step portion 34 formed at the rear of the bottom plate 33 of the machine frame 1, corresponding to the lowermost part of the U-junction. That is, a cooling air passage 36 with a path of intake port 32 - double-sided fan 21 - exhaust port 35
is constructed by partitioning the partition member 29 and the rear plate 30 with a seat pusher 31.

Drainage work from the washing/drying room 2 is performed using the pump 11.
This is done by reversing the Drain hose 3
7 is hung in the groove of the reinforcing rib 19 and bent into an inverted U shape, and its drain port is inserted into the L-shaped cheese 38. On the other hand, a support plate 39 is integrally extended horizontally from the lower case 7 toward the notch of the bulging step 34, and this support plate 39 is placed on the step 34 so as to hide the notch. , and can be fixed as necessary. The support plate 39 has the cheese 38 rotatably inserted therethrough and is located below the stepped portion 34 . However, in order to prevent these from rotating easily, their mutually inserted portions are fitted with concavities and convexities at eight locations around the entire circumference, and are articulated during rotation.

The cheese 38 is made of relatively flexible resin and is blow-molded together with the above-mentioned unevenness and the stopper flange, and the drain hose 40 at the end is connected to the stepped portion 3.
4 (Fig. 8 A,
(see b).

Next, each cleaning and drying operation (process) will be explained.

When the door 8 is opened, tableware is placed in the washing/drying chamber 2, and a start key or the like is operated, water is supplied from the water supply source to the washing water level. The pump 11 circulates the cleaning water and sprays it from the arm nozzle 12 for cleaning, and the heater 13 heats the cleaning water to make it hot. When washing is performed several times by replacing the washing water, detergent is added only for the first time, and from the second time onwards, it also serves as a rinsing operation.

When the last cleaning operation is completed by draining water, the heater 13 and double-sided fan 21 (motor 20) are activated. The heater 13 heats indoor air to produce drying air, and the double-sided fan 21 circulates the drying air between the circulating air path 25 and the drying chamber 2, while causing outside air to flow through the cooling air path 36.

Since the drying air is sucked in from the suction side of the double-sided fan 21 that is far away, the flow rate is slow, and it comes out upward from the outlet 16, flows down, rises again, is sucked into the fan 21, and reaches the duct 14 and the inlet 15. . on the other hand,
Since the external air is sucked in from the intake port 32 in the vicinity of the double-sided fan 21, the flow rate is fast and the entire U-junction area is kept at a constant temperature.

Therefore, the dry air discharged into the circulation air passage 25 is efficiently dehumidified due to its slow flow rate, large cooling capacity, large heat exchange area, etc.
It is heated and dried again in the drying chamber 2.

Condensed water is generated in the U-shaped passage in the circulation air passage 25, and this water is transmitted through the partition member 29 to the drain port 27 at the bottom.
and is discharged into the drying chamber 2. As shown in Figure 7, the drain port 2 is located at the rib 17 at the bottom of the U-junction.
7 may be provided and the water may be discharged to an appropriate location using an external hose.

Here, the guard rib 28 has both bent ends
The protruding surface is placed close to the rib 17 at the lower part of the intersection by about 2 mm, and the protruding surface is placed close to the partition member 29 by about 2 mm. Therefore, the circulating drying air hardly ever flows into the drain port 27, thereby preventing dehumidification efficiency from decreasing due to leakage of the drying air.

The rear wall 3 of the upper case 4 made of resin is sprayed with hot water during cleaning and allows drying air to flow during drying. Therefore, it is easy to generate collision noise, and it is also easy to expand and contract due to heat. However, in this embodiment, since the ribs 17 for the U-junction, the reinforcing ribs 19, and the duct 14 are integrally formed from the rear wall 3, the strength is increased, collision noise can be suppressed, and wind and water can be prevented from leaking. It is possible to prevent the occurrence of gaps etc. Furthermore, since the air passage is not constituted by a separate member, assembly work efficiency is also improved.

(G) Effects of the Invention The present invention provides drying air inlets and outlets in the chamber wall of the washing/drying chamber, and provides external air intakes and exhaust ports in the outer wall of the machine frame, thereby improving the efficiency of the washing/drying chamber. A circulating air passage communicating with the dry air inlet and outlet and a cooling air passage communicating with the external air intake and exhaust ports are provided between the chamber wall and the outer wall of the machine frame, The air passage and the cooling air passage are partitioned by a partition member and a double-sided fan facing both air passages, and the drying air is heat exchanged between the partition member and the double-sided fan, thereby improving drying efficiency. You can improve. In addition, since the drive motor that drives the double-sided fan is installed between the wall of the washing/drying room and the circulation air path and outside the cooling air path, the cooling air is heated by the heat generated by the drive motor. Therefore, the heat exchange efficiency can be increased, and the noise of the drive motor is absorbed by the air layer in the circulation air passage, contributing to noise reduction.

Further, the present invention can provide a washer/dryer that can prevent deterioration of the kitchen environment due to the exhaust of high-humidity air, has high drying performance, and has a high degree of installation freedom.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view of a dishwasher/dryer according to the present invention, Fig. 2 is a partially cutaway rear perspective view, Fig. 3 is a rear view showing the internal mechanism, Fig. 4 is a rear view, and Fig. 5 is a rear perspective view with a part cut away. 6A and 6B are side sectional views of the main part at different positions, FIG. 7 is a view corresponding to FIG. 6 of another embodiment, and FIGS. are a plan sectional view and a side sectional view of main parts. 2...Washing and drying room, 11...Pump, 13...
...Heater, 15...Inlet, 16...Outlet, 1
7...Rib, 21...Double-sided fan, 25...Circulation air path, 36...Cooling air path, 31...Seat pusher, 29
...Partition member, 30...Rear plate.

Claims (1)

[Claims] 1. In a dishwasher/dryer that stores dishes in a washing/drying chamber partitioned within the machine frame, sprays washing water with a washing pump, and then supplies drying air with a heater and fan, the above-mentioned An inlet and an outlet for drying air are provided on the wall of the washing/drying room, and an inlet and an outlet for external air are provided on the outer wall of the machine frame, so that a space between the wall of the washing/drying room and the outer wall of the machine frame is provided. A circulating air passage communicating with the dry air inlet and outlet and a cooling air passage communicating with the external air intake and exhaust ports are provided, and the circulation air passage and the cooling air passage are further connected to both of the air circulation passage and the cooling air passage. partitioned by a partition member facing the air path and a double-sided fan, and a drive motor for the double-sided fan,
A dish washer/dryer characterized in that it is installed between the wall of the washing/drying chamber and the circulation air path and outside the cooling air path.