JPH0325732Y2 - - Google Patents

Description

[Detailed explanation of the idea] (b) Industrial application fields The present invention relates to a dishwasher.

(b) Conventional technology Conventionally, tableware is stored in a washing chamber, and when washing and rinsing, water is supplied into the washing chamber, and then this washing water is sent into a nozzle arm by a pump.
A dishwasher was developed in 1973 that sprayed air from a nozzle arm onto the tableware to wash away dirt, and when drying the tableware, the drying air was introduced from a blower into the washing chamber to dry the tableware. -14221 (A47L 15/42).

However, in such dishwashers, the route for introducing water into the washing tank and the route for introducing drying air are separate, making the structure complex and requiring time and effort to process. It was on.

(c) Problems to be solved by the invention The purpose of the invention is to simplify the structure and reduce the cost of a dishwasher.

(d) Means for Solving Problems The dishwasher of the present invention includes a delivery port provided in the washing chamber, a fan device provided above the delivery port, and the fan device and the delivery port. A blower duct that communicates with the outlet and introduces air from the fan device into the cleaning chamber from the outlet, and a water supply pipe that leads to a water supply source, and the water supply pipe is connected to the air duct. It is.

(e) Effect That is, focusing on the fact that the water supply operation and the drying operation are not performed at the same time, the water supply pipe is connected to the air duct to partially serve as the water supply route and the drying air route.

(f) Examples Embodiments of the present invention will be described based on the drawings.

In FIGS. 1 to 5, 1 is a dishwasher, 2 is a machine frame thereof, 3 is a washing chamber installed inside the machine frame 2, and 4 is a pivot mounted on the front side of the machine frame 2. 6 is a lever for locking the lid 4 to the machine frame 2 in a closed state; By rotating in this direction, the locked state is released and the lid 4 can be opened. Reference numeral 7 denotes a tableware storage basket, which is equipped with rollers 8 and placed on guide rails 9 provided in the washing chamber 3. 10
is a hollow nozzle arm rotatably supported at the center of the bottom of the cleaning chamber 3, and has jet ports 11 opened at a predetermined angle on its upper surface. 12
1 is a circulation waterway for introducing washing water or rinsing water in the washing chamber 3 into the nozzle arm 10;
3 is a filter interposed in the water channel 12, 14 is a handle of the filter 13, and 15 is the circulation water channel 12.
The impeller is disposed in the nozzle arm 1 and is connected to the circulation pump motor 16, and the rotation of the impeller 15 directs the cleaning water or the rinsing water to the nozzle arm 1.
0, is further sprayed from the spout onto the tableware A onto the tableware storage basket 7, and is sucked into the circulation waterway 12 again. Reference numeral 17 denotes a sheathed heater disposed at the bottom of the washing chamber 3, which heats the washing water and rinsing water and heats the washing water and the rinsing water during drying.
This increases the temperature inside the container, thereby promoting cleaning and drying.

Reference numeral 18 denotes a ventilation duct formed in the vertical direction on the rear surface of the cleaning chamber 3; The cleaning chamber 3
Drying air is introduced inside. Further, a joint pipe 22 is formed protruding outward near the outlet 19 of the air duct 18, and a water supply pipe 23 from a water supply source (not shown) is connected to the joint pipe 22, and water is supplied from the outlet 19. is also carried out. 24 is a water supply solenoid valve that controls water supply operation. Reference numeral 25 indicates an exhaust duct for discharging moisture in the cleaning chamber 3 along with dry air from the upper rear surface, 26 indicates a filter cover disposed at the rear corner of the machine frame 2, and 27 and 28 indicate the filter cover 26. an intake port of the fan device 21 and an exhaust duct 25 formed in the fan device 21;
29 is a drain pump that is disposed below the cleaning chamber 3 and is connected to a drain port (not shown) of the cleaning chamber 3; 30 is a drain pump that drains the cleaning liquid or rinsing liquid in the cleaning chamber 3 by the drain pump 29; This is a drain pipe for discharging water to the outside of the machine.
They are arranged in an inverted U-shape along the line a. The drain pipe 30 has a branch pipe 31 on the way from the drain pump 29 to the top of the drain pipe 30.
A terminal end 31a of the branch pipe 31 is connected to a second joint pipe 32 that is formed to protrude above the joint pipe 22 of the air duct 18. 33... are various operation switches and power switches arranged at the front lower part of the machine frame 2, and 34 are electrical components connected to each of these switches 33....

Here, the fan device 21 will be explained based on FIGS. 6 to 8.

The fan device 21 includes a fan casing 3
5. It is composed of a fan motor 36 and a blower fan 37. The fan casing 36 has a cylindrical body 39 with an opening on one side attached to a flat plate 38 attached to the back surface 3a of the cleaning chamber 3, and the opening is connected to the flat plate 38.
A ventilation hole 40 is provided in the upper half area of the circumferential side surface, and a ventilation hole 4 is provided in the lower half area opposite to the ventilation hole 40.
1 is opened in such a way that it protrudes downward.
A rectangular recess 42 sunken into the fan casing 35 is formed in the back surface 35a of the fan casing 35, and the outer wall surface of the recess 42 and the inner circumferential wall surface of the fan casing 35 are used to absorb the air. A ventilation path 43 extending from the hole 40 to the ventilation hole 41 is defined. The recess 42 is the air intake hole 4.
Distance H ₂ to the ventilation hole 41 side is greater than distance H ₁ to the 0 side
It is eccentrically provided at a position where the

A fan motor 36 is disposed in the recess 42, and a shaft 36a of the fan motor 36 passes through a bottom surface 42a of the recess 42, projects into the fan casing 35, and has a shaft 36a at the tip of the shaft 36a. The blower fan 37 is attached. The recess 42
Ventilation holes 45 are provided around the through hole 44 through which the shaft 36a passes.

The air intake hole 40 communicates with the air intake port 27 of the filter cover 26 via the air intake duct 46, and the air intake hole 41 communicates with the air intake port 27 of the filter cover 26 through the air intake duct 46.
It is connected to the inlet 20 of No. 8.

Now, on the inner wall of the cleaning chamber 3, slide ribs 47, 47 having an L-shaped cross section in the vertical direction are provided on both sides of the outlet 19 of the air duct 18. The water inlet body 48 is slidably fitted from above. The water inlet body 4
8 has a shape that covers the outlet 19, and a water inlet 49 is provided on the lower surface. Therefore, the water and drying air led out from the outlet 19 are diverted downward by the water inlet body 48 and are poured onto the heater 17 . Note that this water inlet body 48 may be screwed.

The operation will be explained based on this configuration.

The items to be washed are placed in the tableware basket 7, and the program is started by setting a timer means (not shown). Then, water is supplied from the water inlet 49 until it reaches a predetermined water level, and at the same time, after a predetermined amount of detergent is added, the circulation pump 16 starts operating. As a result, the cleaning water in the cleaning chamber 3 is sent into the nozzle arm 10 and is jetted from the upper surface jet ports 11 of the nozzle arm 10 toward the object to be cleaned, thereby washing away dirt from the object. Since the spout is provided at a predetermined angle, the nozzle arm 10 rotates in one direction with the force of jetting the cleaning water, and the cleaning water is uniformly sprayed onto the object to be cleaned.
After this washing water falls to the bottom of the washing chamber 3, the leftover food is removed by the filter 13, and then it is returned to the circulation channel 12.
sucked inside. During this cleaning process, the cleaning water is heated by the heater 17, so the cleaning effect is higher than that of cold water. In this embodiment, a drain valve is not provided, but since the drain pipe 30 is shaped like an inverted U, the top of the drain pipe 30 is higher than the washing water level, and the washing water is not discharged automatically during the washing process. It never happens.

When the cleaning process is completed, the drainage pump 29 is driven to discharge the cleaning water from the drainage pipe 30 for a predetermined period of time.

When the draining process is completed, the drain pump 29 is stopped and new water is immediately supplied for the rinsing process, but before that, the cleaning water remaining in the drain pipe 30 is drained from the branch pipe 31 to the air duct. 18
→ Return to cleaning room 3. Here, if the branch pipe 3
1 is not provided, the cleaning water remaining in the drain pipe 30 will try to return from the drain port at the bottom of the cleaning chamber 3, but at this time water supply has already started.
This water supply pressure actually pushes it back a little. In this case, the so-called siphon phenomenon occurs due to the inverted U-shape of the drain pipe 30, and the water in the cleaning chamber 3 is successively discharged. The branch pipe 31 is important for solving such problems.
During the drainage process, part of the drainage water returns from the branch pipe 31 into the cleaning chamber 3, causing loss in the drainage work, but if the diameters of the drainage pipe 30 and branch pipe 31 are adjusted appropriately, This should not be a problem.

The rinsing process is performed in the same manner as the washing process using clean water without using detergent.

After the rinsing process is completed, the cleaning chamber 3
Once the rinsing water inside is drained, the drying process begins. In the drying process, the temperature inside the cleaning chamber 3 is raised by the heater 17, and at the same time, the fan motor 36 is energized. As the blowing fan 37 rotates, wind is sucked into the casing 35 from the air intake port 27 and the air intake hole 40 and is sent out from the air blow hole 41. At this time, since a ventilation passage 43 is formed in the casing 35 by the recess 42 and the ventilation passage 43 is made wider on the side of the ventilation hole 41, the wind sucked into the casing 35 is guided to the ventilation passage 43. and is smoothly sent out from the ventilation hole 41.

The wind from the ventilation hole 41 is transmitted through the ventilation duct 1.
8 and is ejected from the water inlet 19 onto the heater 17 and heated by the heater 17 to become hot air, thereby drying the object to be cleaned. The moisture is then discharged to the outside of the machine through the exhaust port 28.

As described above, in this embodiment, the fan motor 36 is disposed in the recess 42 provided in the casing 35 so as not to protrude from the upper surface of the recess 42. There is no need to provide unevenness on the cover 50 as in the past, and the main body can be made thinner accordingly, and when installed on a table, the back of the device can be tightly attached to the rear wall, making the installation state stable. .

Further, by making the water inlet body 48 detachable, cleaning of the water inlet body 48 is facilitated, and since the air duct 18 is also used as a part of the water supply channel, the inside of the air duct 18 is cleaned by the water supply. Moreover, a water supply pipe 30 and a branch pipe 3 are provided in the air duct 18.
1 is opened, the dry air outlet, water supply outlet, and residual water outlet from the branch pipe into the cleaning chamber 3 are connected to the water inlet 1.
9, the cost is reduced and the structure is simple.

Furthermore, the water inlet 19 is provided downward at the lower back of the cleaning chamber 3, and exhaust is carried out from the exhaust duct 25 at the upper rear of the cleaning chamber 3. While being poured upward and heated, it moves forward along the bottom of the cleaning chamber 3, is changed course by the front surface of the cleaning chamber 3, collides with the object to be cleaned, and is discharged. That is, since the object to be cleaned is located in the path where the drying air is heated and exhausted, drying efficiency is promoted.

(g) Effects of the invention The dishwasher of the invention can simplify the piping configuration and processing of the washing chamber by partially combining the water supply route and the drying air route, thereby reducing costs. .

[Brief explanation of the drawing]

Figure 1 is an overall perspective view of the dishwasher of the present invention, Figure 2 is a perspective view of the dishwasher with the lid opened, Figure 3 is a cross-sectional view of the internal mechanism of the same main part, and Figure 4 is the interior seen from the back. 5 is a rear perspective view of the same, FIG. 6 is a cross-sectional view of the fan device portion, FIG. 7 is a rear view of the same, and FIG. 8 is an internal structure diagram of the fan casing. 3...Cleaning room, 18...Blower duct, 19...
Outlet port, 21...fan device, 30...water supply pipe.

Claims (1)

[Claims for Utility Model Registration] (1) A device for washing tableware by spraying washing water onto the tableware in a washing chamber containing the tableware, which includes a discharge port provided in the washing chamber; , a fan device provided above the outlet, and a blower duct that communicates the fan device with the outlet and introduces air from the fan device into the cleaning chamber from the outlet. ,
A dishwasher comprising: a water supply pipe leading to a water supply source; and the water supply pipe is connected to the air duct. (2) The dishwasher according to claim 1, wherein the water supply pipe is connected to a joint pipe that projects from the air duct.