KR100651858B1 - Dishwasher - Google Patents

Abstract

The present invention relates to a structure of a dish washer to accurately measure the degree of contamination of the wash water using a pollution degree sensor, and to facilitate the coupling of the contamination level sensor and the dishwasher. The present invention and the main flow path and the sampling flow path formed on the discharge side of the cleaning pump for pumping the washing water; It is provided in the flow path expansion portion located on the sampling flow path, and provides a structure of a dish washer comprising a pollution degree measuring sensor for measuring the degree of contamination of the washing water.

Dishwasher, pollution level, measuring sensor, sampling flow path

Description

Dishwasher {Dishwasher}

1 is a block diagram showing the main configuration of a conventional dishwasher.

Figure 2 is a block diagram showing the main configuration of an embodiment of a dish washer according to the present invention.

3 is an exploded perspective view of the dish washing machine of FIG. 2;

4 is a perspective view showing a state in which the pollution degree sensor of Figure 3 is installed.

5 is a front view and a plan view of an embodiment of a pollution degree sensor according to the present invention.

6 is an exploded perspective view showing a state in which the pollution degree sensor of Figure 5 is coupled.

Figure 7 is an exploded perspective view showing a state in which another embodiment of the contamination measuring sensor according to the present invention is coupled.

<Description of the symbols for the main parts of the drawings>

100: sump 140: measuring means mounting portion

141: engaging projection 200: lower housing

220: inflow passage 300: upper housing

310: sampling euro 320: lower main euro

330: upper main euro 360: euro expansion unit

400: cover 510: flow control valve

600: contamination measuring sensor 620: measuring element housing

630: measuring element 640: measuring means fastening portion

641: fastening hole

The present invention relates to a dishwasher, and more particularly, to a structure of a dishwasher having a simple structure and an improved structure.

In general, a dishwasher means a machine that automatically washes dishes. The dishwasher has functions such as washing, rinsing, drying, and storing the dishes, thereby helping to reduce household work.

The washing method of the dishwasher is largely divided into a shower type and an ultrasonic type, and the shower type is mainly used at home. In the shower type, hot water in which detergent is dissolved is strongly sprayed onto the dirty dishes to wash the dishes. There are two methods of spraying water: a propeller, a method of spinning a hole through a lot of holes in the pipe, and the like.

Referring to Figure 1, briefly described the important components of the conventional dishwasher as follows.

The conventional dishwasher includes a water collecting unit 1 for collecting wash water, a power generating unit 2 for driving the water collecting unit, and upper and lower washing units 3 and 4 for spraying the washing water introduced from the water collecting unit. It is composed.

The water collecting unit 1 is provided with a main water collecting unit 1a for receiving water for dish washing from the outside or collecting and discharging contaminated water after washing the dish. In addition, a flow path forming part 1b having a flow path for moving the washing water circulated in the dish washing machine to the upper and lower washing parts 3 and 4 is installed at the upper part of the main water collecting part 1a. The passage forming unit 1b is connected to a filtering unit 1c for filtering the washing water to remove dirt.

The power generator 2 operates a washing pump to supply washing water to the upper and lower washing parts 3 and 4 during dish washing, or to operate a drain pump to drain the washing water after washing is finished. Provide power.

The upper and lower washing parts 3 and 4 are places where dishes are washed, and are connected to the water collecting part through a flow path. The spray arms (not shown) installed in the upper and lower washing parts 3 and 4 wash the contaminated tableware by spraying the washing water supplied from the collecting part 1.

Referring to the operation of the conventional dishwasher sequentially.

First, put the dishes to be washed in the dish basket and input the desired stroke. Then, the washing water is filled at a predetermined level by the water collecting valve connected to the outside of the dishwasher at a predetermined water level. After that, the washing water is operated by driving the heater to heat the water to be supplied and driving the main motor. And, the heated wash water is moved to the upper and lower sandstone through the connecting pipe by the washing pump. The washing water reaching the spray arm is sprayed through the spray nozzle to remove dirt from the surface of the dishes.

After washing the dishes, the dirt and washing water separated from the dishes are collected in the main collecting part. At this time, if the degree of contamination is measured by measuring the degree of contamination of the wash water is discharged through the drain pump wash water mixed with dirt and clean water is supplied from the outside. However, when the degree of contamination is below a certain level, the washing water collected in the main catchment is purified and then moved back to the upper and lower sandstones by the washing pump. After the washing is completed, the washing water collected in the sump is discharged to the outside through the drain pump together with the dirt.

However, the conventional dishwasher described above has the following problems.

First, the conventional dishwasher measures the degree of contamination of the washing water on the flow path of the washing water to the upper or lower sandstone without forming a separate flow path in order to measure the degree of contamination. Therefore, the pollution degree sensor of the conventional dishwasher has a problem that the contamination of the washing water may be inaccurate by measuring a large amount of washing water having a constant speed.

Second, since the flow path through which a large amount of washing water passes when the pollution level sensor is installed in the dish washing, the volume of the contamination level sensor itself increases, and the coupling with the dishwasher may be complicated.

The present invention has been made to solve the above problems, an object of the present invention is to provide a structure of a dish washer that can accurately measure the contamination of the washing water pollution sensor.

Another object of the present invention is to provide a structure of a dishwasher capable of reducing the volume of the pollution degree sensor itself installed in the dishwasher and easily coupling the pollution degree sensor to the dishwasher.

In order to achieve the above object, the present invention includes a main flow path and a sampling flow path formed on the discharge side of the cleaning pump for pumping the washing water; It is provided in the flow path expansion portion located on the sampling flow path, and provides a structure of a dish washer comprising a pollution degree measuring sensor for measuring the degree of contamination of the washing water.

The sampling flow path is formed in an upper housing located above the sump, and preferably smaller than the width of the main flow path. In addition, the top surface of the contamination measurement sensor is preferably lower than the height of the sampling channel. In addition, it is preferable that the measurement flow path formed in the contamination measurement sensor has a predetermined angle with the sampling flow path.

On the other hand, the contamination measurement sensor is preferably configured to include a measuring element housing formed with a measuring flow path through which the washing water flows, a measuring element for detecting the contamination of the washing water, a fastening portion formed on one side of the measuring element housing. In addition, it is preferable that the outside of the sump is provided with a measuring means mounting portion in which the contamination measuring sensor is coupled to the sump, and an insertion hole through which the contamination measuring sensor penetrates is formed in the mounting portion.

 In addition, a coupling protrusion is formed at a predetermined position of the coupling portion, and the coupling protrusion preferably corresponds to a coupling hole formed at a predetermined position of the coupling portion. In more detail, it is preferable that the fastening part is an elastic member, and an internal thread part is formed on an inner surface of the installation part, and a male thread part is formed on an outer surface of the fastening part, and may be coupled to each other.

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

The same components as in the related art are denoted by the same names and the same reference numerals for convenience of description, and detailed description thereof will be omitted.

Referring to Figure 2, briefly described with respect to the flow path for the washing water of the dishwasher according to the present invention.

The sump 100 receiving the washing water is installed at the lower end of the washing tank of the dishwasher, and the lower housing 200 is installed at the upper part of the sump 100. In addition, an upper housing 300 is installed on an upper portion of the lower housing 200, and a cover 400 is installed on an upper portion of the upper housing 300.

First, the wash water in the sump 100 is moved to the upper housing 300 through an inflow passage formed in the lower housing 200 by a washing pump (not shown). Then, the washing water is moved to the upper washing arm via the upper main passage 330 formed in the upper housing 300, and is moved to the lower washing arm via the lower main passage 320. A portion of the washing water is moved to the drain pump 110 through the sampling flow passage 310. The washing water passing through the drain pump 110 flows into the waste chamber 210 of the lower housing 200 and is filtered by the filter unit 410 formed in the cover 400. The washing water filtered by the filter unit 410 is collected in the sump 100 again.

In the above-described embodiment, the sampling channel 310 is formed to measure and filter the pollution level, unlike the conventional dishwasher. In addition, since the sampling flow passage 310 is connected to the waste chamber 210 through the drain pump 110 in the washing pump, the pressure applied to the filter unit 410 by the washing pump is lowered. Therefore, the filter portion 410 formed on the cover 400 is not easily clogged by dirt.

Referring to FIG. 3, the structure of the water collecting device of the dish washing machine according to FIG. 2 will be described in detail.

The main motor 20 for providing power to the dishwasher is installed at the lower end of the water collecting device, and the sump 100 having the washing water accommodating part 120 for collecting the washing water is installed at the upper part of the main motor 20. . In addition, a lower housing 200 in which the dirt chamber 210 is formed is installed at an upper portion of the sump 100, and an upper housing 300 in which a flow path through which washing water flows is formed is installed at an upper portion of the lower housing 200. In addition, a cover 400 for filtering the washing water and recovering the washing water to the sump 100 is installed at the upper portion of the upper housing 300.

A heater 130 is installed inside the sump 100, and the heater 130 is always immersed in the washing water during the operation of the dishwasher. The heater 130 serves to facilitate dish washing by heating the washing water to an appropriate temperature. In addition, a main motor 20 and a valve control means 530 are installed on the outer bottom surface of the sump 100, and a drain pump 110 is installed on one side of the external side. However, in the present invention, the main motor and the valve control means may be installed on the outer side of the sump, and the drain pump may also be installed on the outer bottom of the sump.

The lower housing 200 has a first a through hole 240 through which the pollution degree measuring sensor 600 for measuring the pollution level of the washing water is formed, and the wash water passing through the pollution degree measuring sensor 600 and the drain pump 110. The waste chamber 210 is collected. In addition, an impeller accommodating part 270 in which an impeller 70 is accommodated is formed in the center of the lower housing 200. In addition, an inflow passage 220 in which the washing water moved by the impeller 70 flows into the flow control valve 510 is formed outside the impeller accommodation portion 270. A second a through hole 250 through which the flow path control valve 510 passes is formed at a portion connected to the inflow passage 220.

The upper housing 300 is formed with an impeller cap 370 for accommodating an upper portion of the impeller 70, and a second b through hole 350 through which the flow control valve 510 passes. Then, the second main passage 330 is connected to the through-hole 350 to send the washing water to the upper washing arm, the lower main passage 320 to send the washing water to the lower washing arm, sending the washing water to the drain pump 110 The sampling flow passage 310 is formed. In addition, a flow path expansion part 360 in which the pollution degree measurement sensor 600 is installed is formed on the sampling flow path, and a first b through hole 340 through which the pollution degree measurement sensor penetrates is formed at the center of the flow path extension part. The upper housing and the lower housing are preferably separated, but may be integrated.

The impeller 70 is installed between the upper housing 300 and the lower housing 200 and is axially coupled to the motor 20. The impeller 70 is rotated by the motor 20, and the washing water is introduced into the inflow passage 220 by the washing water accommodating part 120 of the sump 100. That is, the impeller 70 serves as a washing pump. The washing water passing through the inflow passage 220 is divided into the upper main passage 330, the lower main passage 320, and the sampling passage 310 by the passage control means. The flow path control means includes a flow path control valve 510 for controlling the direction of the washing water, a valve control means 530 for controlling the flow path control valve 510, and moisture penetration prevention provided between the flow path control valve and the valve control means. Means (not shown). The flow path control valve 510 and the water penetration preventing means are installed inside the sump, and the valve control means 530 is installed at the outer lower end of the sump.

The cover 400 has a filter unit 410 for filtering is installed in the center of the cover 400, the recovery hole 440 of a predetermined shape is formed on the edge of the cover 400. The recovery hole 440 is formed to recover the washing water filtered by the filter back into the sump 100. In addition, the cover 400 has an upper arm connecting portion 430 to allow the washing water to move from the upper main flow passage to the upper injection rock and a lower arm connecting portion 420 to move the washing water to the lower sandstone in the lower main passage. ) Is formed. The cover 400 may be integrally coupled with the upper housing 300 by heat fusion, or may be separately installed and coupled by a fastening means.

Referring to Figure 4, the position and structure of the pollution degree sensor is installed in the sump will be described in detail.

As described above, the lower housing 200 in which the dirt chamber 210 is formed is installed on the upper part of the sump 100, and the upper main channel 330 and the lower main channel 320 are disposed on the upper part of the lower housing 200. The upper housing 300 in which the sampling flow passage 310 is formed is installed. In addition, a pollution degree measuring sensor 600 is installed on the sampling passage 310 to measure the degree of contamination of the washing water.

One side of the sampling passage 310 is connected to the inflow passage 220 into which the washing water flows into the upper housing 300, and the other side thereof is connected to the drain pump 110. The sampling channel 310 is formed to have a width smaller than that of the upper main channel 330 and the lower main channel 320. However, the portion into which the washing water flows into the sampling flow passage 310 may be connected to the flow control valve 510 and may be branched from the upper main flow passage or the lower main flow passage.

The contamination measurement sensor 600 passes through a first a through hole (not shown) formed in the lower housing 200 and a first b through hole (not shown) formed in the upper housing 300 on the sampling flow path 310. Is installed. In more detail, the contamination measurement sensor 600 is installed in the flow path expansion part 360 in which the sampling flow passage 310 is extended. The flow path expansion part 360 is preferably formed at a connection position descending from the upper housing 300 to the drain pump 110. In addition, the top surface of the contamination measuring sensor 600 is preferably installed lower than the height of the sampling flow path, that is, the top surface of the upper housing 300. This is because, by increasing the space of the flow path expansion part 360, the flow rate is reduced at the moment when the washing water flows into the flow path expansion part 360, so that the degree of contamination of the wash water can be accurately measured.

In addition, the measurement flow path 610 formed in the contamination measurement sensor 600 is installed with a predetermined angle with the sampling flow path 310. In more detail, the sampling channel 310 and the measurement channel 610 are preferably installed vertically. Likewise, when the sampling flow passage 310 and the measurement flow passage 610 are connected in a straight line, the flow rate of the washing water may be faster than when the sampling flow passage 310 and the measurement flow passage 610 are installed at a predetermined angle.

5, an embodiment of a pollution degree sensor according to the present invention will be described in detail.

The pollution degree measuring sensor 600 includes a measuring element 630 for measuring the contamination of the wash water, a measuring element housing 620 surrounding the measuring element, and a measuring means coupling part 640 formed at one side of the housing. do.

The measuring device 630 includes a light emitting device 631 for emitting a laser beam and a light receiving device 633 for receiving a beam emitted from the light emitting device. The light emitting element 631 and the light receiving element 633 are separated from each other by a predetermined distance, and washing water flows between the light emitting element and the light receiving element. The light emitting element 631 injects a beam into the flowing washing water, and the light receiving element 633 receives the sprayed beam. At this time, the degree of contamination of the washing water is measured by the interaction of the received beam.

The measuring device housing 620 includes a light receiving unit 623 surrounding the light receiving element, a light emitting unit 621 surrounding the light emitting element, and a base 625 supporting the light receiving unit and the light emitting unit. A measuring channel 610 is formed between the light receiving unit 623 and the light emitting unit 621, and the measuring channel 610 is connected to the sampling channel 310 formed in the upper housing.

The measuring means fastening part 640 is formed on one side of the measuring element housing 620 serves to couple the pollution degree measuring sensor 600 to the sump. The measuring means fastening part 640 is formed with a predetermined fastening hole 641 corresponding to the engaging projection formed on the outer side of the sump. It is preferable that the measuring means fastening part 640 is made of an elastic member, and at least one fastening hole 641 is formed.

With reference to FIG. 6, a structure in which the pollution degree sensor is coupled to the outer bottom of the sump will be described in detail.

Outside of the sump, a driving means mounting unit 150 in which a motor for driving a flow control valve (not shown) is installed, and a measuring means mounting unit 140 in which a pollution degree measuring sensor 600 is installed are formed adjacent to each other.

The measuring means mounting portion 140 protrudes from the outer lower portion of the sump 100, and the insertion hole 143 into which the pollution degree measuring sensor 600 is inserted is formed in the measuring means mounting portion. More specifically, the measuring means mounting portion 140 has a cylindrical shape of a predetermined length with both sides open, and the length of the measuring means mounting portion is preferably shorter than the entire length of the pollution degree measuring sensor 600. However, the shape of the measuring means mounting portion may have any shape as long as it is a shape corresponding to the contamination measuring sensor. For example, if the contamination measuring sensor has a rectangular parallelepiped shape, the coupling portion also has a rectangular cylinder shape.

On the other hand, the outer periphery of the measuring means installation portion 140 is formed with a coupling protrusion 141 of a predetermined shape, the coupling protrusion 141 is a fastening hole 641 formed in the measurement means coupling portion of the contamination measurement sensor Corresponds to At least one coupling protrusion 141 may be formed around an outer surface of the measuring unit installation unit, and the coupling protrusion may have any shape as long as it corresponds to the coupling hole.

The driving means installation unit 150 is cut to a predetermined angle as a premise and has a ring shape having a predetermined thickness. The driving means installation unit 150 includes a reinforcing part 151 for increasing strength outside the sump and facilitating coupling of the motor, and a motor fastening part 155 for fastening the motor to the sump. do. The reinforcement part 151 forms an edge of the driving means installation part, and has a predetermined width as an intermediate support wall 151b connecting the edge support wall 151a protruding to the outside of the sump and the edge support wall. It is composed. At least one intermediate supporting wall 151b is preferably formed. The motor fastening part 155 is formed at a predetermined position of the reinforcing part 151, and a screw thread is formed in the motor fastening part 155. And at least one motor fastening portion 155 is preferably formed.

With reference to FIG. 7, another embodiment of the contamination level measuring sensor according to the present invention will be described.

As in the above-described embodiment, the pollution degree measuring sensor 600 includes a measuring element 630 for measuring contamination of the wash water, a measuring element housing 620 surrounding the measuring element, and a fastening unit for measuring means formed on one side of the housing. Configured to include 640. In addition, the contamination measuring sensor 600 is coupled to the measuring means installation unit 140 formed on the outer bottom of the sump. However, the measuring means fastening part 640 is different from the above-described embodiment, the male screw is formed around the measuring means fastening portion is coupled to the female screw formed inside the measuring means mounting portion 140. However, the coupling means of the measuring means may be used in various coupling methods, such as by coupling with the coupling portion of the measuring means in the form of a cap.

The present invention is not limited to the above-described embodiments, and those skilled in the art can make modifications without departing from the spirit of the present invention, and such modifications are within the scope of the present invention.

The effects according to the present invention described above are as follows.

First, in the dishwasher according to the present invention, the sampling flow path is formed separately, and the contamination measurement sensor is installed in the flow path expansion portion on the sampling flow path, so that the contamination level of the washing water can be more accurately measured.

Second, there is an advantage that the pollution degree sensor can be easily coupled to the sump of the dishwasher by reducing the volume of the pollution degree sensor itself by using a pollution degree sensor suitable for the width of the sampling channel according to the present invention.

Claims (10)

A pollution degree sensor comprising a measuring part measuring a pollution degree of the washing water and a measuring means coupling part connected to one end of the measuring part; A sump provided with a measuring means mounting part having an insertion hole and formed to correspond to the measuring means fastening part so that the pollution degree sensor can be inserted into and installed from the outside of the sump; Dishwasher configured including. The method of claim 1, wherein the measuring unit: A light emitting element; A light receiving element; A measurement device housing accommodating the light emitting device and the light receiving device, the measurement device housing being configured to form a measuring flow path through which the wash water flows between the light emitting device and the light receiving device; Dishwasher configured including. The method of claim 1, The measuring means installation portion dishwasher, characterized in that formed in the form of a cylinder protruding out of the sump. The method of claim 3, Any one of the measuring means mounting portion or the measuring means fastening portion is formed with a coupling projection, the other is a dish washing machine, characterized in that the coupling hole corresponding to the coupling projection is formed. The method of claim 4, wherein The measuring means fastening portion dishwasher, characterized in that made of an elastic member. The method of claim 3, The measuring means fastening portion and the measuring means mounting portion dishwasher, characterized in that the screwed. The method of claim 2, And a main passage and a sampling passage formed therein, the upper housing further comprising a passage hole formed on the sampling passage, wherein the measurement unit of the contamination measurement sensor is inserted into the passage hole of the upper housing. The method of claim 2, A lower housing formed with a first a through hole; An upper housing having a main flow path and a sampling flow path formed therein, wherein a first b through hole is formed on the sampling flow path; An impeller positioned between the lower housing and the upper housing to rotate; In addition, Measuring unit of the contamination measuring sensor is a dish washer, characterized in that inserted into the first and first through holes. The method according to claim 7 and 8, And the sampling flow path has a flow path expansion part, and the passage hole is formed in the flow path expansion part. The method of claim 9, And the measuring flow path is angled with the inlet flow path of the flow path expansion part.

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