KR20060031101A - Apparatus gathering water in the dishwasher - Google Patents

Abstract

The present invention relates to a dishwasher, and more particularly, to a collecting device of a dishwasher which prevents the filter from being clogged, prevents an increase in pressure in the filter and the dirt chamber, and prevents wasted water and power consumption. .

To this end, the present invention provides a water collecting device of the dishwasher to allow some of the pumped wash water to enter the sump via the drain pump, and some of the pumped wash water to enter the injection arm through the main flow path.

In addition, the sump and filtering means is provided with a middle filter or / and coarse filter to provide a water collecting device of the dishwasher to filter the food residues to wash water flows into the sump.

Dishwasher, Water Collector, Filter

Description

Apparatus gathering water in the dishwasher}

1 is a configuration diagram schematically showing the configuration of a conventional dish washer.

2 is an exploded perspective view showing the water collecting device of FIG.

3 is a cross-sectional view showing the water collecting device of FIG.

Figure 4a is a state diagram showing a state in which the washing water flows to the upper and lower injection arm in the filtering means constituting the water collecting device of FIG.

Figure 4b is a state diagram showing the flow of washing water flowing into the upper injection arm in the filtering means constituting the water collecting device of Figure 2;

Figure 5 is a diagram showing the flow of wash water in the first embodiment of the water collecting device of the present invention dishwasher.

6 is an exploded perspective view showing a first embodiment of a water collecting device according to the present invention.

7 is a top view illustrating a state in which a filtering panel is removed from the water collecting device of FIG. 6.

8 is a sectional perspective view showing the internal structure of the water collecting device of FIG.

9 is a longitudinal sectional view showing the internal structure of the water collecting device of FIG.

10 to 12 is a state diagram showing the flow of the washing water when the water collecting device of Figure 6 performs the drain stroke.

Figure 13 is a diagram showing the flow of the washing water in the second embodiment of the water collecting device of the present invention dishwasher.

14 is a top view showing a state in which a filtering panel is removed in a second embodiment of a water collecting device according to the present invention.

15 is a sectional perspective view showing the internal structure of the water collecting device of FIG.

16 and 17 is a state diagram showing the flow of the washing water when the dishwasher of Figure 14 performs a drain stroke.

18 is a diagram showing the flow of the washing water in the third embodiment of the water collecting device of the dish washing machine of the present invention.

19 is a top view showing a state in which a filtering panel is removed in a third embodiment of a water collecting device according to the present invention.

20 is a sectional perspective view showing the internal structure of the water collecting device of FIG.

21 is a longitudinal sectional view showing the internal structure of the water collecting device of FIG.

22 and 23 is a state diagram showing the flow of the washing water when the dishwasher of Figure 19 performs a drain stroke.

24 is a diagram showing the flow of the washing water in the fourth embodiment of the water collecting device of the present invention dishwasher.

25 is a top view showing a state in which a filtering panel is removed in a fourth embodiment of a water collecting device according to the present invention.

FIG. 26 is a sectional perspective view showing the internal structure of the water collecting device of FIG. 25; FIG.

27 and 28 are views showing the flow of the washing water when the dishwasher of Figure 25 performs the drain stroke.

Explanation of symbols on the main parts of the drawings

110: sump 112: heater

113: flow path switching motor 114: switching valve

120: washing pump 122: impeller

130: drain pump 140: filtering means

141: lower case 142: upper case

143: Filtering Panel 143a: Filter

143b: filter hole 144: adapter

151: dirt chamber 152: impeller seat

153: washing water inlet 154a, 154b: main flow path

155: circulation flow paths 155a, 155b: first and second circulation flow paths

156: sampling flow path 161: middle filter

162: Cores filter

The present invention relates to a dishwasher, and more particularly, to a collecting device of a dishwasher which prevents the filter from being clogged, prevents an increase in pressure in the filter and the dirt chamber, and prevents wasted water and power consumption. .

Hereinafter, a conventional dishwasher will be described with reference to FIGS. 1 to 4B.

Hereinafter, a conventional dishwasher will be described with reference to the accompanying drawings.

Referring to FIG. 1, a conventional dishwasher includes a water collecting device 1, upper and lower injection arms 4 and 5, and upper and lower racks 6 and 7 inside a tub.

An upper / lower connecting pipe for pumping the washing water and a drain hose 9 for draining the washing water are connected to the water collecting device 1, and an upper / lower injection arm is connected to the upper / lower connecting pipes 2 and 3. 4,5) are connected. An upper rack 6 is installed above the upper injection arm 4, and a lower rack 7 is installed above the lower injection arm 5.

The upper and lower injection arms 4 and 6 are rotatably installed on the top of the water collecting device 1. At this time, each injection arm is formed with a spraying hole for spraying the washing water to the rack. In addition, the lower injection arm is formed with a filter injection hole so as to drop the food waste filtered by the filter of the water collecting device.

2 and 3, the water collecting device includes a sump 11 for receiving the washing water, washing pumps 12 and 15 installed at the sump to pump the washing water, and a heater installed at the sump to warm the washing water. 14, a filtering means 20 for guiding a part of the pumped wash water to the injection arm and filtering the remainder of the pumped wash water, and a drain pump 17 installed in the sump to drain the wash water. do.

The washing pump includes a pumping motor 12 installed at the sump 11 to generate a driving force, and an impeller 15 installed at the filtering means 20 to pump the washing water.

The filtering means 20 covers a lower case 20a having a space in which the impeller 15 is installed, an upper case 20b installed to cover the upper side of the lower case, and an upper side of the upper case and the sump. It is configured to include a filtering panel 27 is installed to. Hereinafter, the upper case, the filtering means and the devices installed thereon will be described in detail.

First, the upper case 20a constituting the filtering means will be described.

 In the upper case 20a, the washing water inlet 21 formed to introduce the washing water pumped from the impeller 15, the main passages 22 and 23 and the sampling passage 24 connected to the washing water inlet, The dirt chamber 26 etc. connected to the sampling flow path are formed. In addition, a drain port 26a is formed in the dirt chamber 26 so as to communicate with the drain pump housing 11a, and a valve for opening and closing is installed in the drain port 26a.

More specifically, as shown in Figure 4a, the washing water inlet 21 is in communication with the space of the lower case (20b), the main flow passage (22, 23) is two in the washing water inlet 21 The sampling flow passage 24 is branched from the washing water inlet to the opposite side of the main flow passages 22 and 23 and connected to the waste chamber 26. At this time, the dirt chamber occupies approximately half or more of the upper case 20a. In addition, the drain port 26a extends a predetermined length below the dirt chamber 26 and is inserted into the drain pump housing 11a.

In addition, a switching valve 16 is rotatably seated on the washing water inlet 21 of the upper case 20a to open and close two main flow paths, and the switching valve is a flow path switching device 13 installed at the sump 11. Axially coupled). At this time, a rib 16a is formed at the edge of the switching valve 16 to open and close the main flow path.

In addition, a pollution degree sensor 25 is installed in the sampling flow path 24 of the upper case 20a to measure the degree of contamination of the washing water. Such a contamination sensor measures the contamination level of the washing water by the light emitting unit and the light receiving unit.

Next, the filtering panel 27 constituting the filtering means will be described.

The filter 29 is installed in the filtering panel 27 to correspond to the dirt chamber 26 of the upper case 20a. That is, the filter 29 of the filtering panel is installed to cover the upper side of the dirt chamber 26. In addition, a plurality of drain holes 28 are formed outside the filter 29 of the filtering panel. This drain hole 28 is in communication with the sump (11). In addition, a washing water discharge port is formed in the filtering panel 27 so as to communicate with the main flow passages 22 and 23, and upper and lower connecting pipes are inserted into the washing water discharge port.

Referring to the operation of the dishwasher configured as described above are as follows.

The dishwasher washes the dishes while sequentially or selectively performing pre-washing, main washing, rinsing, heating rinsing and drying. A drain stroke is performed between each of these strokes. Hereinafter, the main washing operation will be described.

When the main washing stroke is started, the impeller 15 is rotated as the pumping motor is rotated. This impeller pumps the washing water (including detergent) of the sump 11 to the washing water inlet 21 of the upper case 20a as shown in FIG. 4.

At this time, as the flow path switching motor 13 is rotated, the switching valve 16 selectively or simultaneously opens the two main flow paths 22 and 23. In addition, the two main flow passages may be alternately opened at regular intervals.

Thus, some of the washing water of the washing water inlet 21 is introduced into the upper and / or injection arms (4, 6) through the main flow passage (22, 23), the remaining portion is the dirt through the sampling flow passage (24) Flows into the chamber 26. As such, since the washing water of the washing water inlet 21 flows branched from the washing water inlet, hereinafter, the flow of the washing water will be described in detail.

First, a case in which a part of the washing water flows into the injection arm through the main flow passages 22 and 23 will be described.

In the case of washing the dishes of the upper rack, the switching valve 16 is rotated to close the main flow passage 22 to which the opening and closing rib 16a is connected to the lower injection arm as shown in FIG. 3. Therefore, the washing water introduced into the washing water inlet 21 is supplied to the upper injection arm through the other main flow path 23.

In addition, in the case of washing dishes of the lower rack, the switching valve 16 is rotated to close the main flow path 23 to which the opening and closing rib 16a is connected to the upper injection arm as shown in FIG. 5A. Therefore, the washing water introduced into the washing water inlet 21 is supplied to the lower injection arm through the other main flow passage 22.

In addition, when washing dishes in the upper and lower racks, the switching valve 16 opens all of the main flow passages 22 and 23 so that the washing water is supplied to both the upper and lower spray arms, or the upper and lower portions. The two main flow passages are alternately opened to alternately supply wash water to the sandstone. Accordingly, the washing water introduced into the washing water inlet is simultaneously supplied to the upper / lower injection arms or alternately.

Washing water supplied to the upper or lower spray arm is sprayed on the upper or lower rack to wash the dishes. The washing water washing the dishes falls on the filtering panel 27, and the washing water is recovered to the sump 11 through the drain hole 28 of the filtering panel 27.

Next, a case in which the remaining part of the washing water flows into the waste chamber 26 through the sampling flow passage 24 will be described.

A portion of the washing water always flows into the sampling flow passage 24 regardless of which main flow path the switching valve 16 opens.

The washing water of the sampling flow path enters the waste chamber 26 through the contamination sensor, and the washing water overflows through the filter 29 located above the waste chamber. At this time, the filter 29 filters out foreign substances contained in the washing water. The filtered wash water flows back into the sump 11 through the drain hole 28 of the filtering panel 27. In addition, the food waste filtered by the filter 29 is dropped from the filter 29 by the washing water sprayed through the lower injection arm (6).

This filtered wash water seems to be partially filtered in a short time, but almost all wash water is filtered out during the main washing process.

However, the conventional dishwasher has the following problems.

First, since the wash water pumped from the sump flows directly into the waste chamber through the sampling flow path, there is a problem that the filter of the filtering panel is clogged as a large waste flows into the waste chamber.

Second, when the filter is clogged and the water pressure acts largely on the dirt chamber, there is a problem that the wash water in the dirt chamber is drained through the drain hose and the wash water is wasted.

Third, if the wash water is unnecessarily drained, a plurality of wash water must be replenished, and the replenished water must be heated by a heater. Therefore, there is a problem that power consumption is unnecessarily increased.

Fourth, if the filter of the filtering panel is often clogged, fatigue accumulates in the filter and there is a problem that deforms.

Fifth, the washing water dropped from the spray arm to the water collecting device is introduced into the sump together with the food waste without being filtered separately. Accordingly, there is a problem that large food waste introduced into the sump blocks various flow paths or causes flow path resistance.

In order to solve the above problems, the present invention provides a water collecting device of the dishwasher to prevent the filter from clogging, to prevent the pressure in the filter and the dirt chamber to increase, and to prevent wasting of the washing water and power consumption. There is a purpose.

In order to achieve the above object, according to one embodiment of the present invention, a sump for receiving washing water; A washing pump installed at the sump to pump washing water; A drain pump installed at the sump to drain the washing water; And, the sump is installed in the sump, the waste chamber for filtering the wash water, the main passage for guiding a portion of the washing water pumped from the washing pump to the injection arm, and some of the pumped washing water sump via a drain pump A circulating flow path for guiding the water, a sampling flow path for guiding a part of the pumped washing water to the waste chamber, and a filtering means provided with a filter to flow into the sump after the wash water flowing into the waste chamber overflows. Provide a catchment device.

The circulation passage is preferably connected to the sump via a drain pump in the filtering means.

The sampling flow passage connects the drain pump housing and the dirt chamber. Alternatively, the sampling flow path may connect the washing water inlet of the main flow path and the dirt chamber.

In addition, it is preferable that a middle filter is installed in the circulation passage to filter the washing water flowing into the sump. At this time, the middle filter is installed between the drain pump housing and the sump in the circulation passage.

The middle filter is preferably inserted into the middle filter to filter the incoming washing water. At this time, it is more preferable that the coarse filter is detachably installed to discard the filtered dirt. In addition, the coarse filter preferably has a larger mesh than the middle filter.

The upper surface of the filtering means is preferably formed to be inclined so that the washing water is collected toward the middle filter.

In addition, according to another aspect of the invention, the sump for receiving the wash water; A washing pump installed at the sump to pump washing water; A drain pump installed at the sump to drain the washing water; A sewage chamber installed in the sump and filtering the washing water, a main flow passage for guiding a part of the washing water pumped by the washing pump to the injection arm, a sampling flow passage for guiding the rest of the pumped washing water to the waste chamber; Filtering means provided with a filter to flow into the sump after the washing water flowing into the dirt chamber overflows; In addition, the filter unit and the sump is provided in the sump of the dishwasher comprising: a middle filter: installed in the sump so that the washing water dropped to the filtering means is introduced into the sump.

The sampling flow passage is preferably connected to the waste chamber via a drain pump in the filtering means. Alternatively, the sampling flow path may connect the washing water inlet of the main flow path and the dirt chamber.

The middle filter is preferably removably inserted into the opening of the filtering means. In this case, it is more preferable that the middle filter has a larger mesh than the filter of the filtering means.

The middle filter is preferably inserted into the middle filter to filter the incoming washing water. More preferably, the coarse filter is detachably installed to discard the filtered dirt. In this case, the coarse filter preferably has a larger mesh than the middle filter.

In addition, the upper surface of the filtering means is preferably formed to be inclined so that the washing water is collected toward the middle filter.

A first embodiment of a water collecting device for a dish washing machine according to the present invention will be described with reference to FIGS. 5 to 12.

Referring to FIG. 5, the first embodiment of the water collecting device pumps a part of the washing water in the order of the washing pump, the main flow path and the injection arm, and simultaneously pumps the rest of the washing water from the washing pump to the drainage pump and again returns to the waste chamber. A flow path is formed by dividing the sump into the sump.

This collecting device will be described.

Referring to FIG. 6, the water collecting device includes a sump 110 accommodating the washing water, a washing pump 120 installed at the sump to pump the washing water, and a drain pump 130 installed at the sump to drain the washing water. And a filtering means 140 installed on the sump.

The heater 112 is installed inside the sump 110 to heat the washing water, and the sump 110 is provided with a flow path switching motor 113. The sump is formed with a drain pump housing 110a to install a drain pump.

The filtering means 140 may include a dirt chamber 151 for filtering the washing water, main passages 154a and 154b for guiding some of the washing water pumped from the washing pump 120 to the injection arm, and the pumped pump. A circulation passage 155 for guiding a part of the washing water to the sump 110 via the drain pump 130, a sampling passage 156 for guiding a portion of the pumped washing water to the waste chamber 151, and the dirt The filter 143a is installed to flow into the sump 110 after the washing water flowing into the chamber 151 overflows.

The circulation passage 155 is connected to the sump 110 via the drain pump 130 in the filtering means 140, and the sampling passage 156 connects the drain pump housing 110a and the dirt chamber 151. Connect.

At this time, the circulation passage 155 connects the first circulation passage 155a connecting the washing water pumping portion of the filtering means 140 and the drain pump housing 110a, and connects the drain pump housing 110a and the sump 110. It consists of a 2nd circulation flow path 155b.

The structure of this filtering means will be described in more detail.

6 and 7, the filtering means 140 includes an upper case 142, a lower case 141, and a filtering panel 143. In this case, an upper case 142 is installed to cover the lower case 141, and a filtering panel 143 is installed to cover the upper case 142.

The upper case 142 is provided with a washing water inlet 153 and main passages 154a and 154b, and the lower case 141 is provided with a dirt chamber 151 and an impeller seating part 152. The upper case 142 is installed to cover the upper portion of the impeller seating portion 152. At this time, the washing water inlet 153 is connected to the impeller seating part 152, and main flow paths 154a and 154b are connected to the washing water inlet 153. In addition, an impeller 122 is rotatably installed on the impeller seating part 152, and a rotating shaft of the washing pump 120 is axially coupled to the impeller 122.

A first circulation channel 155a is formed in the upper and lower cases 141 and 142 so as to communicate with the impeller seat 152 as shown in FIG. 7. In this case, a discharge hole 155c is formed in the first circulation channel to communicate with the impeller seating part 152. In addition, a sampling flow path 156 is formed in the lower case 141 to communicate with the dirt chamber 151.

In this case, the first circulation channel 155a and the sampling channel 156 are formed side by side as shown in FIG. 8 and extend downward.

An adapter 144 is inserted into ends of the first circulation channel 155a and the sampling channel 156, and one side of the adapter 144 is connected to the drain pump housing 110a. The adapter 144 is provided with an independent flow path such that the first circulation flow path 155a and the sampling flow path 156 communicate with the drain pump housing 110a.

The adapter 144 is fastened to the lower surface of the sump 110 to form a second circulation channel 155b for communicating the drain pump 130 and the sump 110. In this case, the lower surface of the sump 110 is recessed in the channel portion 111, the lower end of the adapter 144 is fastened to the channel portion 111. In FIG. 8, the drain pump 130 is not illustrated in order to show the circulation flow path 155 and the sampling flow path 156 in detail.

In addition, the filtering panel 143 is provided with a filter 143a to correspond to the dirt chamber 151 of the lower case 141, a plurality of communication with the sump 110 in the portion avoiding the filter 143a. The filter hole 143b which consists of a hole is formed. The filtering panel 143 is inclined to collect the washing water toward the middle filter 161 as shown in FIG. 9.

Accordingly, as shown in FIGS. 7 and 8, some of the washing water pumped from the impeller 122 flows into the main flow passages 154a and 154b and then flows into the injection arms, and the remaining of the pumped washing water flows into the first circulation passage. Flow into the drain pump 130 through 155a. Subsequently, some of the washing water of the drain pump 130 is introduced into the waste chamber 151 through the sampling flow path 156, and the remaining of the washing water of the drain pump 130 is second-circulated as shown in FIG. 9. It flows into the sump 110 through the flow path 155b.

Meanwhile, a middle filter 161 may be installed in the circulation passage 155 to filter the washing water flowing into the sump 110 as illustrated in FIG. 8.

In this case, the middle filter 161 is more preferably installed in the so-called second circulation flow path 155b between the drain pump 130 and the sump 110 in the circulation flow path 155. This is to facilitate the discharge of the dirt in the second circulation passage 155b to the drain pump 130 during the drain stroke.

The middle filter 161 is installed in the sump 110.

That is, an opening is formed in the upper surface of the filtering means 140 so as to communicate with the sump 110, and the middle filter 161 is formed in the opening of the filtering panel 143 and has a cylindrical shape. For example, an opening is formed in the filtering panel 143 forming the upper surface of the filtering means 140 so as to communicate with the sump 110, and the middle filter 161 has an upper end supported by the opening of the filtering panel 143. The lower end is installed to cover a predetermined portion of the channel portion 111.

Coarse filter 162 (coarse filter) is preferably inserted into the middle filter 161 to filter the washing water flowing from the filtering panel 143.

At this time, the coarse filter 162 is preferably detachably installed so as to empty the filtered food waste.

In addition, the lower end of the coarse filter 162 and the lower end of the middle filter 161, as shown in Figure 9, are provided spaced apart from a predetermined interval. To this end, a locking step is formed in the coarse filter 162 to be caught by an opening of the filtering panel 143.

The coarse filter 162 may have a larger mesh than the middle filter 161, and the middle filter 161 may have a larger mesh than the filter 143a of the filtering means 140. This is to filter food debris of different sizes in the filter 143a having a mesh of different sizes.

Referring to the operation of the first embodiment of the water collecting device configured as described above is as follows.

The dishwasher washes the dishes while sequentially or selectively performing washing, rinsing, heating rinsing and drying strokes. A drain stroke is performed between each of these strokes.

When the washing stroke is started, the impeller 122 is rotated as the washing pump 120 is operated, and the impeller 122 pumps the washing water of the sump 110 upward.

Some of the pumped washing water is introduced into the main flow paths 154a and 154b through the washing water inlet 153 in the impeller seating portion 152 as shown in FIG. 7. The washing water introduced into the main flow paths 154a and 154b is supplied to the upper injection arm and / or the lower injection arm as the switching valve 114 is rotated. Subsequently, the washing water sprayed from the spraying arm washes the dishes and then falls on the filtering panel 143 together with the food waste. At this time, since the filtering panel 143 is inclined to lower the coarse filter 162, the washing water and the food waste of the filtering panel 143 are collected at the coarse filter 162. Subsequently, the washing water is filtered while passing through the coarse filter 162 and the middle filter 161 and then flows into the sump 110. At this time, the coarse filter 162 filters large food waste.

At the same time, the remainder of the pumped wash water flows into the drain pump housing 110a through the first circulation channel 155a as shown in FIG. 8. At this time, since the drain pump 130 is not operated, the drain pump housing 110a serves as a sedimentation tank in which heavy ones of food waste sink.

Some of the washing water of the drain pump 130 is introduced into the waste chamber 151 through the sampling flow path 156. The wash water of the dirt chamber 151 is filtered while being overflowed through the filter 143a of the filtering panel 143 located above, and the filtered wash water is filtered through the filter hole 143b of the filtering panel 143. And the sump 110 through the coarse filter 162. The food trash of small size is filtered through the filter 143a of the filtering panel 143. In this case, since the pumped washing water flows into the waste chamber 151 via the drain pump 130, the pumping pressure of the washing pump 120 is relatively small in the filter 143a of the filtering panel 143. . In addition, since the relatively small amount of food waste is introduced into the waste chamber 151, it is possible to minimize the clogging of the filter 143a of the filtering panel 143.

In addition, the rest of the washing water of the drain pump 130 is introduced into the sump 110 through the second circulation passage (155b) as shown in FIG. At this time, the middle filter 161 is filtered the food waste of the medium size. The filtered food waste remains on the second circulation channel 155b.

As such, the largest of the food waste dropped from the jetting arm is first filtered in the coarse filter 162, and the medium-sized food waste is secondly filtered in the drain pump 130 and the middle filter 161, Food waste of size is filtered out of the filter 143a of the filtering panel 143.

After the above-described washing stroke is finished, a drainage stroke is started to discharge the washing water and food waste to the outside.

When the drain stroke is started, as the drain pump 130 is operated, the washing water of the sump 110 and the dirt chamber 151 flows into the drain pump housing 110a as shown in FIGS. 10 to 12.

At this time, the washing water of the sump 110 is introduced into the drain pump housing 110a through the second circulation passage 155b, and at this time, the food waste of the second circulation passage 155b is also introduced. In addition, the food waste in the dirt chamber 151 flows into the drain pump housing 110a through the sampling flow path 156.

The food waste introduced into the drain pump housing 110a is discharged to the outside together with the washing water. Then, after all the strokes are completed, the coarse filter 162 is taken out to remove food waste.

Next, a second embodiment of a water collecting device for a dish washing machine according to the present invention will be described with reference to FIGS. 13 to 17.

Referring to FIG. 13, the second embodiment of the water collecting device pumps a part of the washing water in the order of the washing pump, the main flow path and the injection arm, pumps a part of the washing water into the waste chamber, and passes the rest of the washing water through the drain pump. The flow path is configured to flow into the sump.

As shown in FIG. 6, the water collecting device includes a sump, a washing pump, a drain pump, and filtering means. Here, since the structures of the sump, the washing pump and the drain pump are substantially the same as those described in the first embodiment, the description thereof will be omitted below.

14 and 15, the filtering means 240 includes a dirt chamber 251 for filtering the washing water, and a main flow path for guiding a part of the washing water pumped from the washing pump 220 to the injection arm ( 254a.254b), a circulation passage 255 for guiding some of the pumped washing water to the sump 210 via the drain pump 230, and guiding some of the pumped washing water to the waste chamber 251. The sampling flow path 256 is formed.

The circulation flow path 255 is connected to the sump 210 via the drain pump 230 in the filtering means 240, and the sampling flow path 256 is the washing water inlet 253 of the main flow paths 254a and 254b. And the soil chamber 251 is connected.

At this time, the circulation passage 255 connects the first circulation passage 255a connecting the washing water pumping portion of the filtering means 240 and the drain pump housing 210a, and connects the drain pump housing 210a and the sump 210. It consists of the 2nd circulation flow path 255b.

The structure of this filtering means will be described in more detail.

The filtering means 240 is substantially the same as the first embodiment in that it consists of an upper case, a lower case and a filtering panel.

The upper case 242 is formed with the washing water inlet 253 and the main flow path (254a, 254b), the lower case 241 is the dirt chamber 251 and the impeller seat 152 (see Fig. 6) Is formed. The washing water inlet 253 is connected to the impeller seat, and the main flow passages 254a and 254b are connected to the washing water inlet 253.

In this case, first and second circulation passages 255a are formed in the upper and lower cases 241 and 242 so as to communicate with the impeller seating portion. A discharge hole 255c is formed in the first circulation channel 255a to communicate with the impeller seating portion. The first circulation channel 255a extends downward.

In addition, a sampling flow path 256 is formed in the upper case 242 to connect the washing water inlet 253 and the waste chamber 251. At this time, as shown in Figure 15, the waste chamber 251, the drain port 251a is formed to discharge the washing water of the waste chamber 251 to the drain pump housing (210a) during the drainage administration. The drain port 251a is inserted into and installed in the drain pump housing 210a. The drain valve 251a is provided with an on-off valve 251b.

In this case, an adapter 244 is inserted into an end of the first circulation channel 255a, and one side of the adapter 244 is connected to the drain pump housing 210a. The adapter 244 has a flow path formed to communicate the first circulation flow path 255a and the drain pump housing 210a.

The adapter 244 is fastened to the lower surface of the sump 210 to form a second circulation channel 255b for communicating the drain pump 230 and the sump 210. In this case, a channel portion 211 is recessed on the bottom of the sump 210, and a lower end of the adapter 244 is fastened to the channel portion 211.

Accordingly, some of the washing water pumped from the impeller flows into the washing water inlet 253, and some of the washing water of the washing water inlet 253 flows into the injection arm through the main flow paths 254a and 254b. The rest of the washing water of the washing water inlet 253 flows into the waste chamber 251 through the sampling flow path 256. At the same time, the rest of the washing water pumped from the impeller flows into the drain pump 230 through the first circulation flow path 255a and then flows into the sump 210 through the second circulation flow path 255b.

A middle filter 261 is preferably installed in the circulation passage 255 to filter the washing water flowing into the sump 210. In addition, the middle filter is further provided with a coarse filter 262.

Since the middle filter 261 and the coarse filter 262 are substantially the same as those described in the first embodiment, description thereof will be omitted.

In addition, a filter 243a is installed in the filtering panel 243 so as to correspond to the dirt chamber 251, and a plurality of filter holes 243b communicating with the sump 210 are provided at portions where the filter 243a is avoided. Is formed. The filtering panel 243 is inclined to collect the washing water toward the middle filter 261.

The operation of the second embodiment of the water collecting device configured as described above will be described.

When the washing stroke of the dishwasher starts, the impeller rotates as the washing pump 220 is operated, and the impeller pumps the washing water of the sump 210 upward.

Some of the pumped washing water is introduced into the washing water inlet 253 at the impeller seating portion, as shown in FIGS. 14 and 15, and the rest of the pumped washing water is pumped into the first circulation passage 255a at the impeller seating portion. Inflow.

Some of the washing water of the washing water inlet 253 flows into the main flow passages 254a and 254b, and the washing water flowing into the main flow passages 254a and 254b rotates the switching valve 214 so that the upper injection arm or And / or to the lower injection arm. The washing water sprayed from the jetting arm is washed with the dishes and then falls on the filtering panel 243 together with the food waste. The washing water of the filtering panel 243 is filtered while passing through the coarse filter 262 and the middle filter 261 and then flows into the sump 210. At this time, the coarse filter 262 is filtered large food waste.

In addition, the rest of the washing water of the washing water inlet 253 flows into the waste chamber 251 through the sampling flow path 256. The wash water of the dirt chamber is filtered while being overflowed through the filter 243a of the filtering panel 243, and the filtered wash water is filtered through the filter hole 243b and the coarse filter 262 of the filtering panel. Flows into the sump 210. At this time, the filter 243a of the filtering panel 243 is filtered small food waste.

At the same time, the washing water introduced into the first circulation passage 255a flows into the drain pump housing 210a. At this time, heavy food wastes sink in the drain pump housing 210a.

The washing water of the drain pump 230 is introduced into the sump 210 through the second circulation channel 255b. At this time, the middle filter 261 is filtered out of the food waste of the medium size.

When this washing stroke is completed and the draining stroke is started, the drainage pump is started.

At this time, the food waste of the second circulation flow path 255b together with the washing water discharged from the sump 210 to the drain pump 230 through the second circulation flow path 255b as shown in FIGS. 16 and 17. Discharged to 210a). In addition, as the open / close valve of the dirt chamber 251 is opened, the food waste of the dirt chamber 251 is discharged to the drain pump housing 210a through a connecting pipe.

The food waste introduced into the drain pump housing 210a is discharged to the outside together with the washing water.

Next, a third embodiment of a water collecting device for a dish washing machine according to the present invention will be described with reference to FIGS. 18 to 23.

Referring to FIG. 18, a third embodiment of the water collecting device pumps a part of the washing water in the order of the washing pump, the main flow path and the injection arm, and configures the flow path to introduce the rest of the washing water into the waste chamber via the drain pump. do.

This collecting device will be described.

19 and 20, the water collecting device includes a sump 310 for receiving the washing water, a washing pump 320 installed at the sump to pump the washing water, and a drain pump installed at the sump to drain the washing water. 330, and a filtering means installed on the sump, and a middle filter 361 provided on the filtering means and the sump so that the washing water separated from the spray arm is filtered and introduced into the sump.

As shown in FIG. 6, a heater is installed in the sump to heat the washing water, and a flow path switching motor is installed in the sump.

19 and 20, the filtering means 340 includes a dirt chamber 351 for filtering the washing water and a main flow path for guiding a part of the washing water pumped by the washing pump 320 to the injection arm. 354a and 354b and sampling flow paths 356 for guiding the remaining of the pumped wash water to the waste chamber 351 are formed.

The sampling flow path 356 is connected to the waste chamber 151 via the drain pump 330 in the filtering means.

In this case, the sampling flow passage 356 may include a first sampling flow passage 356 connecting the washing water pumping portion of the filtering means and the drain pump housing 310a, and a connection connecting the drain pump housing 310a and the sump 310 with each other. It consists of two sampling flow paths 356.

The structure of this filtering means will be described in more detail.

The filtering housing is substantially the same as the first embodiment in that it consists of an upper case 342, a lower case 341 and a filtering panel 343 (see Fig. 6).

19 and 20, the upper case 342 has a washing water inlet 353 and main flow paths 354a and 354b, and the lower case 341 has a dirt chamber 351 and an impeller seating part. Is formed. The washing water inlet 353 is connected to the impeller seat, and the main flow paths 354a and 354b are connected to the washing water inlet 353.

First and second sampling paths 356a are formed in the upper and lower cases 341 and 342 so as to communicate with the impeller seating portion. In this case, a discharge hole 355c is formed in the first sampling passage 356a to communicate with the impeller seating portion. In addition, a second sampling flow path 356b is formed in the lower case 341 so as to communicate with the dirt chamber 351. In this case, the first sampling flow passage 356a and the second sampling flow passage 356b are formed side by side and extend downward. In FIG. 20, the drain pump 330 is not illustrated to show the sampling flow path 356 in detail.

An adapter 344 is inserted into ends of the first sampling channel 356a and the second sampling channel 356b, and one side of the adapter 344 is connected to the drain pump housing 310a. In this adapter 344, independent flow paths are formed to communicate the first sampling flow path 356a and the second sampling flow path 356b with the drain pump housing 310a.

Accordingly, some of the washing water pumped from the impeller flows into the main flow passages 354a and 354b and then into the injection arm, and the remaining of the pumped washing water is discharged through the first sampling flow passage 356a. After flowing in, it is introduced into the waste chamber 351 through the second sampling flow path 356b.

A middle filter 361 is installed at the filtering panel 343 and the sump 310. For example, an opening is formed in the filtering panel 343 to recover the washing water dropped from the filtering panel 343 from the spray arm to the sump 310, and a cylindrical middle filter 361 having an upper end opening in the opening of the filtering panel. ) Is installed. In this case, the middle filter 361 has an upper end supported by the opening of the filtering panel 343 and a lower end supported by the lower end of the sump 310.

A coarse filter 362 (coarse filter) is inserted into the middle filter 361 to filter the washing water flowing from the filtering panel 343. At this time, the coarse filter 362 is preferably detachably installed so as to empty the filtered food waste.

In addition, the lower end of the coarse filter 362 and the lower end of the middle filter 361 are provided to be spaced apart by a predetermined interval as shown in FIG. To this end, a locking step is formed in the coarse filter 362 so as to be caught by an opening of the filtering panel 343.

The filter 343a is installed in the filtering panel 343 so as to correspond to the dirt chamber 351, and a plurality of filter holes 343b are formed at portions where the filter 343a is avoided. The filtering panel 343 is installed to be inclined to collect the washing water toward the middle filter 361.

The coarse filter 362 has a larger mesh than the middle filter 361, and the middle filter 361 has a larger mesh than the filtering panel 343. This is to make it possible to filter food debris of different sizes in the filter 343a having a mesh of different sizes.

The operation of the third embodiment of the water collecting device configured as described above will be described.

When the washing stroke is started, the impeller rotates as the washing pump 320 is operated, and the impeller 322 pumps the washing water of the sump 310 upward.

Some of the pumped washing water flows into the main flow paths 354a and 354b through the washing water inlet 353 at the impeller seating portion as shown in FIG. 19. The washing water introduced into the main flow paths 354a and 354b is supplied to the upper injection arm and / or the lower injection arm as the switching valve 314 rotates. Subsequently, the washing water sprayed from the spraying arm washes the dishes and then falls on the filtering panel 343 together with the food waste.

The washing water of the filtering panel 343 is collected by the inclined filtering panel 343 toward the coarse filter 362 and filtered while passing through the coarse filter 362 and the middle filter 361 as shown in FIG. Flows into). At this time, the coarse filter 362 filters the large food waste.

At the same time, the remainder of the pumped wash water flows into the drain pump housing 310a through the first sampling flow path 356a, as shown in FIG. In this case, since the drain pump 330 is not operated, the drain pump housing 310a serves as a sedimentation tank in which heavy ones of food waste sink. Subsequently, the washing water of the drain pump 330 flows into the waste chamber 351 through the second sampling passage 356.

As such, the washing water introduced into the dirt chamber 351 is filtered while being overflowed through the filter 343a of the filtering panel 343 located above, and the filtered washing water is filtered through the filter hole of the filtering panel 343. The sump 310 flows through the 343b and the coarse filter 362. The filter 343a of the filtering panel 343 filters food waste of small size. In this case, since the pumped washing water flows into the waste chamber 351 via the drain pump 330, the pumping pressure of the washing pump 320 is relatively less applied to the filter 343a of the filtering panel 343. .

As such, the largest amount of food waste dropped from the injection arm is first filtered by the Coarse filter 362, and the unfiltered food waste is introduced into the sump 310 and then the drain pump 330 and the filtering panel 343. Is filtered secondly by the filter 343a.

After the above-described washing stroke is finished, a drainage stroke is started to discharge the washing water and food waste to the outside.

When the drain stroke starts, as the drain pump 330 is operated, the washing water of the sump 310 and the dirt chamber 351 flows into the drain pump housing 310a as shown in FIGS. 22 and 23.

At this time, the washing water and food waste of the dirt chamber 351 is discharged to the drain pump housing 310a through the second sampling flow path (356b).

The food waste introduced into the drain pump housing 310a is discharged to the outside together with the washing water.

Next, a fourth embodiment of a water collecting device for a dish washing machine according to the present invention will be described with reference to FIGS. 24 to 28.

Referring to FIG. 24, the fourth embodiment of the water collecting device pumps a part of the washing water in the order of the washing pump, the main flow path and the injection arm, and configures the flow path to directly introduce the rest of the washing water into the waste chamber.

This collecting device will be described.

As shown in FIG. 6, the water collecting device includes a sump, a washing pump, a drain pump, and filtering means. Here, since the structures of the sump, the washing pump and the drain pump are substantially the same as those described in the first embodiment, the description thereof will be omitted below.

25 and 26, the filtering means includes a dirt chamber 451 for filtering the washing water, main passages 454a and 454b for guiding a part of the washing water pumped from the washing pump to the injection arm, A sampling flow path 456 is formed to guide the remainder of the pumped wash water to the waste chamber 451. In this case, the sampling flow passage 456 connects the washing water inlet portion 453 of the main flow passages 454a and 454b and the waste chamber 451.

The structure of this filtering means will be described in more detail.

The filtering means 440 is substantially the same as the first embodiment in that the upper case 442, the lower case 441, and the filtering panel 443 are constituted.

As illustrated in FIG. 24, the upper case 442 includes a washing water inlet 453, main passages 454a and 454b, and a sampling passage 456, and a waste chamber 451 in the lower case 441. And an impeller seating portion (see FIG. 6). A washing water inlet 453 is connected to the impeller seating part 152, and main flow passages 454a and 454b and a sampling passage 456 are connected to the washing water inlet 453.

In this case, as illustrated in FIG. 25, the waste chamber 451 is provided with a drain 451a to discharge the washing water and food waste from the waste chamber 451 to the drain pump housing 410a. The drain 451a is inserted into the drain pump housing 410a. The drain valve 451a is provided with an on-off valve.

Accordingly, some of the washing water pumped from the impeller 422 flows into the washing water inlet 453, and some of the washing water of the washing water inlet 453 flows into the injection arm through the main flow passages 454a and 454b. The rest of the washing water of the washing water inlet 453 is introduced into the waste chamber 451 through the sampling flow path 156.

The filtering means 440 and the sump 410 is preferably provided with a middle filter 461 to filter the incoming washing water. In addition, a coarse filter 462 is further installed at the middle filter 461.

Since the middle filter 461 and the coarse filter 462 are substantially the same as those described in the third embodiment, description thereof will be omitted. The configuration of the filtering panel 443 is also the same.

The operation of the fourth embodiment of the water collecting device configured as described above will be described.

When the washing stroke of the dishwasher starts, the impeller rotates as the washing pump 420 is operated, and the impeller pumps the washing water of the sump 410 upward.

Some of the pumped wash water is introduced into the main flow paths 454a and 454b at the wash water inlet 453, and the rest of the pumped wash water is collected through the sampling flow path 456. Flows into the chamber 451.

The washing water introduced into the main flow passages 454a and 454b is supplied to the upper injection arm and / or the lower injection arm as the switching valve 414 rotates. The washing water sprayed from the jetting arm is washed with the dishes and then falls on the filtering panel 443 together with the food waste. The washing water of the filtering panel 443 is filtered while passing through the coarse filter 462 and the middle filter 461 and then flows into the sump 410 (see FIG. 21). At this time, the coarse filter 462 filters large food waste.

In addition, the wash water of the dirt chamber 451 is filtered while being overflowed through the filter 443a of the filtering panel 443, and the filtered wash water is filtered through the filter hole 443b of the filtering panel 443. And flows into the sump 410 through the coarse filter 462. At this time, the filter 443a of the filtering panel 443 filters food waste having a small size.

When this washing stroke is completed and the draining stroke is started, the drainage pump is started.

At this time, as the open / close valve of the waste chamber 451 is opened, the food waste of the waste chamber 451 is discharged to the drain pump housing 410a through a connecting pipe as shown in FIGS. 27 and 28. In addition, the washing water and food waste of the sump 410 is discharged to the drain pump housing (410a).

The food waste introduced into the drain pump housing 410a is discharged to the outside together with the washing water.

As described above, the water collecting device of the dishwasher according to the present invention has the following effects.                     

First, in the first and second embodiments according to the present invention, since the washing water pumped from the sump flows into the waste chamber via the drain pump, the pressure of the washing pump indirectly acts on the waste chamber. Therefore, it is possible to prevent the hydraulic pressure from largely acting on the dirt chamber.

Second, according to the first and second embodiments of the present invention, since the washing water is first precipitated by the drainage pump and then introduced into the waste chamber, the filter of the filtering panel can be prevented from being clogged as the large soil flows into the waste chamber. have. Therefore, it is possible to prevent the washing water from draining unnecessarily.

Third, since the wash water dropped from the spray arm to the water collecting device is first filtered by the middle filter and the coarse filter and then flows into the sump, it is possible to prevent various flow paths of the water collecting device from being blocked by food waste or generating flow resistance. have.

Claims (28)

Sump containing wash water; A washing pump installed at the sump to pump washing water; A drain pump installed at the sump to drain the washing water; And, Installed in the sump, the dirt chamber for filtering the wash water, the main flow channel for guiding a portion of the washing water pumped from the washing pump to the injection arm, and a portion of the pumped washing water to guide the sump through the drain pump And a circulation passage, a sampling passage for guiding a part of the pumped washing water to the waste chamber, and filtering means installed to flow into the sump after the washing water flowing into the waste chamber overflows. The method of claim 1, And the circulation passage is connected to the sump via a drain pump by a filtering means. The method of claim 2, The circulation passage is: A first circulation passage connecting the washing water pumping portion and the drain pump housing of the filtering means; And, The second circulation passage for connecting the drain pump housing and the sump: collecting device of the dishwasher, characterized in that consisting of. The method of claim 2, The sampling flow path of the water collecting device of the dishwasher, characterized in that for connecting the waste pump housing and the dirt chamber. The method of claim 2, The sampling flow path is a collecting device of the washing machine, characterized in that for connecting the washing water inlet and the dirt chamber of the main flow path. The method according to any one of claims 1 to 5, And a middle filter is installed in the circulation passage to filter the washing water flowing into the sump. The method of claim 6, The middle filter is the water collecting device of the dishwasher, characterized in that installed between the drain pump housing and the sump in the circulation passage. The method of claim 7, wherein An opening is formed in the upper surface of the filtering means so as to communicate with the sump, A collecting device of the dishwasher, characterized in that the cylindrical middle filter having an upper end is installed in the opening of the filtering means. The method of claim 8, And the middle filter has a larger mesh than the filter of the filtering means. The method of claim 6, Collecting device of the dishwasher, characterized in that the middle filter is inserted into the middle filter to filter the incoming washing water. The method of claim 10, The coarse filter is a water collecting device of the dishwasher, characterized in that detachably installed so as to discard the filtered dirt. The method of claim 11, The lower end of the coarse filter and the lower end of the middle filter is a water collecting device of the dishwasher, characterized in that spaced apart a predetermined interval. The method of claim 12, Collecting device of the dishwasher, characterized in that the engaging filter is formed on the coarse filter to be caught by the opening of the filtering means. The method of claim 11, The coarse filter has a larger mesh than the middle filter collection device of the dishwasher, characterized in that. The method of claim 6, The upper surface of the filtering means is a water collecting device of the washing machine, characterized in that formed inclined so that the washing water is collected toward the middle filter. The method of claim 15, The upper surface of the filtering means collecting device of the washing machine, characterized in that a plurality of filter holes are formed in communication with the sump. Sump containing wash water; A washing pump installed at the sump to pump washing water; A drain pump installed at the sump to drain the washing water; A sewage chamber installed in the sump and filtering the washing water, a main flow passage for guiding a part of the washing water pumped from the washing pump to the injection arm, a sampling flow passage for guiding the remaining of the pumped washing water to the waste chamber; Filtering means provided with a filter to flow into the sump after the washing water flowing into the dirt chamber overflows; And, And a middle filter installed on the filtering means and the sump so that the washing water dropped to the filtering means is introduced into the sump after filtering. The method of claim 17, And the sampling flow path is connected to the waste chamber via a drain pump in a filtering means. The method of claim 18, The sampling flow path is: A first sampling passage connecting the washing water pumping portion of the filtering means and the drain pump housing; And, The second sampling passage for connecting the sump pump housing and the sump: collecting device of the dishwasher, characterized in that consisting of. The method of claim 17, The sampling flow path is a water collecting device of the dishwasher, characterized in that for connecting the washing water inlet and the waste chamber of the main flow path. The method according to any one of claims 17 to 20, An opening is formed in the upper surface of the filtering means so as to communicate with the sump, A collecting device of the dishwasher, characterized in that the cylindrical middle filter having an upper end is installed in the opening of the filtering means. The method of claim 21, And the middle filter is detachably inserted into the opening of the filtering means. The method of claim 21, And the middle filter has a larger mesh than the filter of the filtering means. The method of claim 21, Collecting device of the dishwasher, characterized in that the middle filter is inserted into the middle filter to filter the incoming washing water. The method of claim 24, The coarse filter is a water collecting device of the dishwasher, characterized in that detachably installed so as to discard the filtered dirt. The method of claim 25, The lower end of the coarse filter and the lower end of the middle filter is a water collecting device of the dishwasher, characterized in that spaced apart a predetermined interval. The method of claim 24, The coarse filter has a larger mesh than the middle filter collection device of the dishwasher, characterized in that. The method of claim 21, The upper surface of the filtering means is a water collecting device of the washing machine, characterized in that formed inclined so that the washing water is collected toward the middle filter.

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