KR100640906B1 - dish washer - Google Patents

Abstract

The present invention relates to a dishwasher, and more particularly, to a dishwasher to prevent unnecessary waste of the washing water.

To this end, the present invention, the drain pump for draining the washing water of the washing tank to the outside; A flow path guide housing 150 having a dirt filtration chamber 151 to filter the pumped wash water; A sampling flow path 160 for guiding a part of the pumped wash water to the filth filtration chamber via the drain pump; And, when the water pressure of the filtration chamber is high provides a dish washer comprising a re-inlet flow path 170 is installed to discharge the washing water of the sampling flow path in the tub 110 or the washing tank 120 containing the dishes. do.

Dishwasher, Drainage Pump, Reflow Euro

Description

Dishwasher {dish washer}

1 is a block diagram showing a conventional dishwasher.

Figure 2 is a block diagram showing a problem in the washing administration of the dish washing machine of Figure 1;

3 is a block diagram showing the configuration of a dish washer according to the present invention.

4 is a block diagram showing the flow of the washing water when the water pressure is increased in the filth filtration chamber during the washing stroke of the dish washing machine of FIG.

5 is a block diagram showing the drainage of the dish washing machine of FIG.

Explanation of symbols on the main parts of the drawings

110: tub 111: washing arm

112: rack 120: washing tank

130: washing pump 140: drainage pump

150: flow path guide housing 151: dirt filtration chamber

152: filter unit 153: flow path control valve

160: sampling euro 170: reflow euro

180: drain hose 190: drain flow path

191: check valve

The present invention relates to a dishwasher, and more particularly, to a dishwasher to prevent unnecessary waste of the washing water.

A general dishwasher is a device for washing or / and drying dishware by spraying washing water onto the dishware.

Referring to Figure 1, it will be described with respect to the conventional dishwasher.

The dishwasher includes a tub 10 forming an inner space, a driving unit (not shown) disposed below the tub, a rack 12 for placing dishware, and a spray for spraying washing water onto the dishes contained in the rack. The arm 11 is comprised. In this case, the driving unit performs a function of pumping and filtering the washing water. In addition, the driving unit and the cleaning arm is connected by a connection hose. In addition, the drive unit is provided with a flow path control valve 53 to selectively switch the washing water to a predetermined washing arm.

The driving unit includes a washing tank 20 in which washing water is accommodated, a washing pump 30 for pumping the washing water of the washing tank, a drain pump 40 for draining the washing water of the washing tank, and some of the pumped washing water. It comprises a flow path guide housing (50) for pumping to the arm (11) and filtering a portion. In addition, a heater (not shown) is installed in the washing tank 20 to heat the washing water.

The flow guide housing has a dirt filter. At this time, the dirt filtration unit is composed of a dirt filtration chamber 51 into which the washing water is introduced, and a filter unit 52 for filtering the wash water of the dirt filtration chamber.

In addition, the sampling flow path 60 is installed so that the washing water pumped from the washing pump 30 flows into the filtration chamber 51 via the drain pump 40. In addition, a drain flow path 70 is installed to discharge the wash water of the washing tank 20 to the drain pump 40 during the drain stroke, and the wash water of the drain pump 40 is installed in the drain flow path 70. The check valve 71 is installed to prevent backflow to the back side). In addition, the flow path guide housing is provided with a filter unit 52 so as to cover the upper side of the filtration chamber 51, the washing water passing through the filter unit 52 and the washing water dropped from the washing arm 11 washing tank A recovery hole (not shown) is formed to flow into the 20.

Referring to Figure 1, the operation of the above-described dish washer will be described.

The dishwasher selectively or serially performs a washing stroke, a rinsing stroke and a drying stroke. Between each of these strokes is a drainage stroke. Hereinafter, the washing operation will be described.

When the washing pump 30 is operated, some of the washing water of the washing tank 20 is pumped to the washing arm 11 to wash dishes of the predetermined rack 12. At this time, by operating the flow path control valve 53, the washing water is supplied to the predetermined washing arm 11 alone or simultaneously.

At the same time, some of the washing water of the washing tank 20 is introduced into the drainage pump 40 through the sampling flow path 60 together with the food waste. At this time, a large food waste is deposited in the drain pump. Thus, the wash water is primarily filtered in the drain pump 40. In this way, the washing water and some food waste of the drain pump is introduced into the waste filtration chamber 51, and the washed water thus introduced is filtered while passing through the filter unit 52.

The washing water passing through the filter unit 52 and the washing water separated from the washing arm 11 are recovered to the washing tank 120 through the collecting hole (not shown).

However, the above dish washer has the following problems.

First, since there is a large amount of food waste in the washing water at the beginning of the washing stroke, a large amount of dirt is introduced into the waste filtration chamber. Since the dirt blocks the filter part, the pressure of the washing pump is concentrated on the drain pump. When pressure is concentrated in the drain pump, the washing water of the drain pump is discharged to the outside through the drain hose as shown in FIG. Thus, there is a problem that the washing water is wasted unnecessary.

Second, since the replenishment is made again by the washing water discharged to the outside, and the replenishing washing water needs to be warmed again, there is a problem that power consumption is significantly increased. In addition, there was a problem that the washing time is extended.

Third, when the hydraulic pressure of the dirt filtration chamber acts on the filter for a long time, the filter part has accumulated a problem of fatigue accumulation.

The present invention is to solve the above problems, it is an object of the present invention to provide a dishwasher to prevent the washing water is unnecessarily drained at the beginning of the washing stroke.

Another object of the present invention is to provide a dishwasher which reduces power consumption and washing time.

Still another object of the present invention is to provide a dishwasher which prevents deformation of the filter portion.

In order to achieve the above object, the present invention, a drain pump for draining the washing water of the washing tank to the outside; A flow path guide housing having a dirt filter to filter the pumped wash water; Sampling flow channel for guiding a part of the pumped wash water to the waste filtration unit via the drain pump; And, if the water pressure of the filtration unit is a predetermined pressure or more provides a dishwasher comprising a re-inlet flow path: installed to discharge the washing water of the sampling flow path in the tub or washing tank containing the dishes.

The tub is preferably provided with a water supply chamber so that the washing water is supplied, and the discharge portion of the reflow channel is connected to the water supply chamber.

The reflow flow path is preferably connected to the sampling flow path section between the drain pump and the waste filtration unit. At this time, the discharge portion of the re-inlet flow path is disposed higher than the dirt filter portion.

In addition, it is preferable that the predetermined portion of the drain hose is disposed higher than the bent portion of the reflow channel.

Therefore, according to the present invention, it is possible to prevent waste of washing water, reduce power consumption, and prevent deformation of the filter part.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention that can specifically realize the above object will be described.

Referring to Figure 3, it will be described in the dishwasher according to the present invention.

The dishwasher may include a drain pump 140 for draining the washing water of the washing tank to the outside, a flow guide housing 150 having a filtration unit 151 and 152 to filter the pumped washing water, and a portion of the pumped washing water to drain the washing water. Sampling flow path 160 for guiding the filth filtration 151 and 152 via the pump 140, and tub 110 for washing dishes of the washing water in the sampling flow path 160 when the water pressure of the filtration part is higher than a predetermined pressure or It is configured to include a re-flow path 170 is installed to discharge into the washing tank 120.

Here, since the tub 110, the washing tank 120, the washing pump 130, the drain pump 140 and the flow path guide housing 150 is substantially the same as the conventional configuration, description thereof will be omitted. The number 111 is the wash arm, the rack is 112, the filthy filtration chamber is 151, the filter part is 152, and the flow path switching valve is 153. In addition, the filtration unit is composed of a filtration chamber 151 and the filter unit 152.

The washing pump and the drain pump may be installed in the washing tank or installed separately from the washing tank. At this time, it is more preferable in terms of space utilization to install a washing pump and a drain pump in the washing tank. 3 illustrates only the structure in which the reflow channel is connected to the tub.

The tub 110 is preferably provided with a water supply chamber 116 through which the washing water is supplied from the outside into the tub, and the discharge portion of the reflow flow path 170 is connected to the water supply chamber 116. At this time, a water supply hose 115 is connected to the water supply chamber.

The sampling flow path 160 is configured to connect the washing pump 130, the drain pump 140, and the waste filtration unit 151 and 152. For example, the sampling flow path is connected to a pump housing constituting the washing pump and the drain pump.

The sampling flow path 160 may be formed inside the flow path guide housing 150 or may be formed as a separate pipe from the flow path guide housing 150. In addition, it is also understood that a part of the sampling flow path may be formed inside the flow path guide housing, and the other part may be formed as a separate pipe.

In addition, the reflow flow path 170 is connected to the sampling flow path section 162 between the drain pump 140 and the waste filtration unit 151, 152. At this time, the re-inlet flow path 170 is preferably a predetermined portion (P1) is disposed a predetermined height higher than the dirt filter (151, 152) (H2-H1). For example, the discharge portion of the reflow flow path 170 is disposed a predetermined height higher than the upper end of the dirt filtering portion (151,152). Accordingly, when the filter unit 152 of the dirt filtering unit is blocked, the washing water of the sampling flow passage 160 is discharged into the tub 110 through the reflow flow passage 170. Of course, although the re-inlet flow path is not shown, it can be understood that it may be connected to the filth filtration chamber 152.

In addition, a drain hose 180 is connected to the drain pump 140. The predetermined portion P2 of the drain hose 180 is preferably disposed higher than the discharge portion of the reflow flow path 170. For example, the drain hose 180 bends a predetermined portion P2 and allows the bent portion P2 to be disposed higher than the discharge portion of the reflow flow path 170 (H4-H2). Of course, it is also understood that the discharge portion of the drain hose 180 may be disposed higher than the discharge portion of the reflow flow path 170. By the structure of the drain hose, even when the wash water is discharged through the re-inlet flow path 170, it is possible to prevent the wash water of the drain pump 140 is discharged to the outside through the drain hose 180. . In addition, it is preferable that the highly disposed portion P2 of the drain hose 180 is disposed at approximately half the height of the main body. In addition, it is not necessary to provide a check valve in the drain hose.

In addition, a drain passage 190 is installed to connect the washing tank 120 and the drain pump 140. In this case, a check valve 191 is installed in the drain passage 190 so as to open when the drain passage 190 is drained.

Referring to the operation of the embodiment according to the present invention described above are as follows.

Referring to Figure 3, it will be described with respect to the washing stroke of the dishwasher according to the present invention.

When the washing pump 130 is operated as the washing stroke starts, some of the washing water of the washing tank 120 is sprayed to the washing arm 111 by the guide of the flow path guide housing 150. The washing water is sprayed from the washing arm 111 to wash the dishes, and the food waste of the dishes is recovered to the washing tank 120 together with the washing water.

In addition, some of the washing water pumped from the washing pump 130 flows into the drain pump 140. At this time, the large amount of food waste precipitates in the drain pump 140. Thus, the pump housing acts as a submersion tank.

Subsequently, the food waste and washing water not precipitated are introduced into the filtration chamber 151 through the sampling passage 160. The washing water of the filtration chamber 151 is filtered in the filter unit 152 and then recovered to the washing tank 120 through a recovery hole (not shown) of the washing tank 120. At this time, since the discharge portion of the reflow flow path 170 is disposed higher than the dirt filtration chamber 151 (H2-H1), the washing water of the sampling flow path 160 is to replace the reflow flow path 170 by the potential energy difference. The tub 110 is not discharged through. At this time, the washing water of the drain hose has a level of the top height (H1) of the dirt filtration chamber or slightly higher.

On the other hand, in the initial stage of the washing process, a large amount of food waste is contained in the washing water. Therefore, a large amount of food waste is introduced into the filth filtration chamber 151, and the filter unit 152 is blocked by the filtered food waste.

When the filter unit 152 is blocked in this way, the water pressure of the washing pump 130 acts intensively on the drain pump 140 and the sampling flow path 160. At this time, the washing water of the sampling flow path 160 is discharged to the water supply chamber 116 through the re-inlet flow path 170 as shown in Figure 4, the washing water of the water supply chamber is discharged into the tub. This is because the hydraulic pressure concentrated in the sampling flow passage 160 has increased so that the difference in potential energy between the discharge portion of the reflow flow passage 170 and the waste filtration chamber 151 can be exceeded. In addition, at the beginning of the washing stroke, no washing water is discharged to the outside through the drain hose 180. This is because the water pressure concentrated in the sampling flow path 160 is constantly resolved as the wash water is discharged into the washing tank 120 through the reflow flow path 170, so that the water pressure of the sampling flow path 160 is the highest point of the drain hose 180. It does not increase enough to exceed (H4). At this time, the washing water of the drain hose is at least the height (H3) of the highest point of the re-inlet flow path.

Referring to Figure 5, it will be described with respect to the drain stroke of the dishwasher according to the present invention.

When the drain pump 140 is operated, the washing water and food waste of the washing tank 120 is introduced into the drain pump 140 through the drain flow passage 190. In addition, the washing water and food waste of the filtration chamber 151 is also introduced to the drain pump 140. Subsequently, the washing water and the food waste introduced into the drain pump 140 are discharged to the outside through the drain hose 180 by the pumping force of the drain pump. At this time, the washing water and food waste is discharged to the outside beyond the highest point (P2) of the drain hose, the wash hose is drained all by the siphon phenomenon.

The effect of the dish washing machine according to the present invention described above is as follows.

First, when the filter part is blocked at the beginning of the washing stroke, the washing water of the sampling flow path is discharged into the tub through the reflow flow path. Therefore, by partially releasing the water pressure intensively acting on the waste filtration chamber and the drain pump, there is an effect that can be prevented from being discharged to the outside unnecessarily at the beginning of the washing stroke.

Secondly, there is an effect to continuously perform the washing stroke even if the filter portion is clogged during the washing stroke. Therefore, there is an effect that can reduce the consumption, washing time and power consumption of the washing water.

Third, by preventing the washing water from draining during the washing stroke, there is an effect that can reduce the power consumption used to reheat the replenishing wash water as in the prior art.

Fourth, there is an effect that can prevent the filter portion from being deformed due to fatigue by the original prevention of the concentrated pressure of the hydraulic pressure in the dirt filtration chamber.

Claims (6)

A drain pump for draining the washing water of the washing tank to the outside; A flow path guide housing having a dirt filter to filter the pumped wash water; Sampling flow channel for guiding a part of the pumped wash water to the waste filtration unit via the drain pump; And, And a reflowing flow path which is installed to discharge the washing water of the sampling flow path into the tub or the washing tank in which the dishes are accommodated when the water pressure of the dirt filtering portion is high. The method of claim 1, The tub is provided with a water supply chamber so that the washing water is supplied, Dispensing part of the re-flow path is connected to the water supply chamber. The method of claim 1, And the reflow path is connected to a sampling flow path section between the drain pump and the waste filtration unit. The method of claim 3, And a discharge portion of the reflow flow path is disposed higher than a dirt filter portion. The method according to any one of claims 1 to 4, A drain hose is connected to the drain pump, wherein the drain hose has a bent portion, wherein the bent portion is disposed above the discharge portion of the reflow passage. The method of claim 5, And the bent portion of the drain hose is disposed at half the height of the main body.

Images