JPS61290931A - Tablewear washing machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a dishwasher that washes dishes and the like by jetting washing water.

・Prior Art A commonly used dishwasher of this kind is shown in FIG. In Figure 7, 1 is tableware.

2 is a washing nozzle, 3 is a washing tank, 4 is a washing pump that supplies washing water to the washing nozzle 2, and 6 is a filter that collects leftover food (contaminated substances attached to dishes etc. are called leftover food). , 6 is a drainage pump, and 7 and 8 are a water supply pipe and a drain pipe for washing water.

In the dishwasher configured in this manner, the washing water supplied from the water supply pipe 7 at the bottom of the washing tank 3 is jetted from the washing nozzle 2 by the washing pump 4, thereby washing off the leftover dishes. The washing water containing the leftover food is filtered through a filter 5, circulated to the washing pump 4, and repeatedly sprayed from the washing nozzle 2. After a predetermined period of time, the washing water is drained out of the washing tank 3 by the drainage pump 6. Subsequently, the process of rinsing the dishes etc. with newly supplied washing water is added two to three times.

The washing water during this step is also referred to below as rinsing water.

Problems to be Solved by the Invention However, in the above configuration, since the filter 5 is located below the washing water surface, the leftover food collected on the filter 5 while the washing pump 4 is in operation is transferred to the bottom of the washing tank 3 when the operation is stopped. spreads in the washing water. Therefore, after the washing water is drained, leftovers will be scattered on the bottom of the washing tank 3 in addition to the filter 6, and the leftovers collection performance of the filter 6 will be insufficient, and therefore it will take time to process the leftovers. There was a problem.

Further, since the filter 5 is provided in the suction side path of the washing pump 4, the rinsing water passes through the leftover food collected by the filter 5 and circulates during the rinsing process.

Therefore, there was a problem that the new rinsing water was contaminated with leftover food.

The present invention solves these problems and aims to provide a dishwasher that allows easy post-processing of leftover food and separates rinse water from leftover food.

Means for Solving the Problems In order to solve the above problems, the dishwasher of the present invention is provided with a bypass path for circulating the washing water in the washing tank, which is located above the washing water level at the bottom of the washing tank, It is provided at the outlet of the route or bypass route.

Effect With the above configuration, the leftover food flows into the bypass path together with the washing water at the bottom of the washing tank, and is separated and collected by the filter. Further, since this filter is located above the washing water surface, the washing water can prevent the debris collected in the filter from being scattered on the bottom surface of the washing tank, making it easy to post-process the remaining food. Furthermore, if an on-off valve is provided in the bypass and kept in the closed state, the rinse water will not pass through the leftover food, thereby preventing the leftover food from contaminating the rinse water.

Embodiment FIG. 1 shows a longitudinal sectional view of a dishwasher according to a first embodiment of the present invention. In FIG. 1, 9 is a dish basket, 10 is a spray nozzle, 11 is a washing tank, 12 is a washing pump that feeds washing water to the washing nozzle 1o, 13 is a filter that collects leftover food, 14 is a drain pump, Reference numerals 16 and 16 are a water supply pipe and a drain pipe for washing water, and the filter 13 is detachably installed from a filter case 17 located above the washing water surface. Reference numeral 18 denotes a protective net for preventing foreign objects such as meat chunks and spoons from being sucked into the cleaning pump 12 from birds, and is formed with an opening diameter large enough to allow normal leftover food to pass through. Reference numerals 19 and 20 denote fixed blades consisting of a rotary blade and a large number of holes for crushing leftover food into small pieces in order to prevent the leftover food from clogging the injection nozzle 10. Reference numeral 21 indicates a bypass route branched from the drainage route and connected to the filter case 17, and 22 and 23 indicate the bypass route 21 and the drain pipe 16.
This is a solenoid valve that opens and closes the valve.

The operation of the above configuration will be explained below.

When contaminated dishes are set in the dishwasher 9 and washing water is stored at the bottom of the washing tank 11 and the washing pump 12 is operated, the washing water is sent to the washing pump 12 through the protective net 18 and is sprayed from the washing nozzle 10. Wash away leftovers from dishes. The leftover food falls to the bottom of the washing tank 11 together with the washing water, is pulverized by the rotary blade 19 and the fixed blade 2o, is sucked into the washing pump 12, and is again sprayed together with the washing water from the washing nozzle 10, and this process is repeated. At this time, by simultaneously operating the drain pump 14 while opening the solenoid valve 22 and closing the solenoid valve 23, a part of the wash water is sent to the filter 13 through the bypass path 21, and the leftover food in the wash water is removed from the filter 13. Washing water that does not contain leftover food is sent to the washing tank 11. Through this operation, the leftover food that falls from the dishes and circulates along with the washing water through the washing pump 12, the washing nozzle 1o, and the washing tank 11 is gradually collected by the filter 13, and the washing water becomes free of leftover food. After running for a predetermined time, the cleaning pump 12 is stopped, the solenoid valve 22 is closed, and the solenoid valve 23 is opened.The cleaning water is drained to the outside by the drain pump 14 through the drain pipe 16, and the bottom of the cleaning tank 11 is installed in a conventional dishwasher. Unlike other products, there are no leftovers left.

Next, fresh water is supplied to rinse the dishes, and the washing pump 12 is operated. During this rinsing process, the leftover food is collected above the washing water surface, so that the leftover food does not spread into the washing water again, unlike in the conventional method. Moreover, since the filter 13 is installed in the drainage path rather than in the suction side path of the washing pump as in the conventional example, the rinsing water does not pass through leftover food, and the dishes can be rinsed with fresh rinsing water that is not contaminated by overtime. I can rinse it off. In addition, in this example, the above-mentioned washing step once and this rinsing step twice are automatically performed continuously,
Cleaning is complete.

As described above, according to the present embodiment, by disposing the filter 13 above the washing water surface to collect leftover food, scattering of leftover food on the bottom surface of the washing tank 11 after washing is eliminated, and moreover, the leftover food can be removed. Since it is separated from the rinsing water, cleaning can be completed with fresh, uncontaminated rinsing water.

FIG. 2 is a longitudinal sectional view of a dishwasher showing a second embodiment of the present invention. In FIG. 2, 24 is a dish basket, 26 is a washing nozzle, 26 is a washing tank, 27 is a washing pump, and 28 is a drain pump, which is the same as the structure shown in FIG. 1. The difference from the configuration shown in FIG. 1 is that a filter 29 is provided in the drainage path from the drainage pump 28, and a bypass path 3Q that branches off continuously from the filter 29 is provided, and 31 and 32 are electromagnetic valves that open and close the path. . The operations such as the washing process and the method of collecting leftover food in this embodiment are similar to those in the first embodiment, but a unique effect is that even in the process of sending the washing water to the bypass path 30, there is a step of draining the washing water to the outside of the washing tank 26. However, since the washing water first passes through the filter 29 and the leftover food is collected,
One advantage is that there is no danger of debris accumulating on the solenoid valves 31, 32 or the drainage path, causing malfunctions. In addition, the above first
In the second embodiment, the discharge side path of the drain pump is used in order to provide the filter above the washing water surface, but the same operation and effect can be obtained even if the filter is provided in the suction side path of the drain pump. be able to.

FIG. 3 is a longitudinal sectional view of a dishwasher showing a third embodiment of the present invention. The configuration in FIG. 3 is similar to the configuration in FIG. 1, but differs from the configuration in FIG. 1 in that a filter 33 is provided above the tableware cup 32. Generally, the opening of the washing tank of a dishwasher and the door covering it are located on the front or top surface of the main body, and in order to remove the filter from the washing tank, it is necessary to pull the dish basket forward or lift it upward. The entire tableware basket is about 6~ for standard tableware for 4~6 people.
The tableware weighs 9 yuan, and it takes effort to move it. However, a unique advantage of this embodiment is that the filter 33 can be taken out from the washing tank and leftover food can be processed by simply opening the door provided on the top surface of the main body 34 while leaving the tableware cup 32 intact. Furthermore, as a fourth embodiment of the present invention, as shown in FIG. 4, by providing a filter 36 on the door 36, an even simpler system can be obtained.

In addition, as a sixth embodiment, as shown in FIG.
By providing the filter 7 so that it can be attached and detached from the outside without opening the door 38 of the main body, it is possible to easily take out the filter. In this case, it goes without saying that the filter is not limited to being above the dish basket, but may be above the washing water surface.

FIG. 6 is a vertical sectional view of a dishwasher showing a sixth embodiment of the present invention. The configuration in FIG. 5 is similar to that in FIG. 2, but the filter 39 is placed outside the washing tank 4o. It differs in that it is set up. The cleaning process and the waste collection method in this embodiment are similar to those in the second embodiment, but the filter 39 is taken out of the main body 41 from a location different from the opening of the cleaning tank 4o. Ru.

Therefore, as an effect specific to this embodiment, the filter 3
The food scraps collected in 9 are separated from the dishes in the washing tank 4o, so that even if you forget to dispose of the food scraps and leave them for a long time, the dishes will not be contaminated by odor or bacteria. One example is that it is hygienic.

As described in detail, according to the present invention, since the filter is suspended above the surface of the washing water, scattering of leftover food in the washing water can be prevented, and post-processing is extremely simple. Furthermore, by providing an on-off valve in the bypass path, it is possible to provide an innovative dishwasher that can perform rinsing with fresh washing water that does not pass through leftover food.

[Brief explanation of drawings]

1 to θ are longitudinal sectional views of dishwashers according to first to sixth embodiments of the present invention, respectively, and FIG. 7 is a longitudinal sectional view of a conventional dishwasher. 9... Dish basket, 1o... Washing nozzle, 11... Washing tank, 12... Washing pump, 13... Filter, 14 ... Drain pump, 21 ... Bypass route. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3 Figure 4 Figure 5 Figure 6

Claims (7)

[Claims] (1) A washing tank that houses a dish basket and is equipped with a washing nozzle inside, a washing pump that feeds washing water from the bottom of the washing tank to a spray nozzle, a filter that collects leftover food, and washing water in the washing tank. A dishwasher comprising a bypass path for circulating water, and the filter is provided at a position above the washing water surface at the bottom of the washing tank and at the bypass path or the outlet of the bypass path. (2) The dishwasher according to claim 1, wherein an on-off valve is provided in the bypass path. (3) The bypass route branches into the drainage route and inside the cleaning tank,
The dishwasher according to claim 1, wherein the filter is provided upstream of the branch point. (4) The dishwasher according to claim 1, wherein the filter is provided above the dish basket. (5) The dishwasher according to claim 1, wherein the filter is provided on a door that covers the opening of the washing tank. (6) Claim 1 in which the filter is provided outside the cleaning tank
Dishwasher as described in section. (7) A dishwasher according to claim 1, 2, 3, 4, 5, or 6, wherein the filter is detachably installed from the outside of the main body.