KR20090009130U - Drum type washing machine - Google Patents

Abstract

Drum washing machine according to the present invention disclosed in the main body, the tub provided in the main body for receiving the wash water, a drain pump for forcibly discharging the wash water to the outside, a drain passage for connecting the tub and the drain pump, Including a turbidity sensor mounted on the drainage flow path, the user can easily remove the foreign matter attached to the sensing portion of the turbidity sensor.

Description

Drum washing machine {Drum type washing machine}

The present invention relates to a drum washing machine, and more particularly, to a drum washing machine having an improved mounting structure of a turbidity sensor for detecting the degree of contamination of the washing water in the washing process.

In general, a washing machine is configured to wash laundry by sequentially performing water supply, washing, rinsing, draining, and dehydrating strokes by a preset program. Such a washing machine is a pulsator (pulsator) rotatably installed on the bottom of the tub as a pulsator washing machine that rotates the wash water and the laundry to be washed, and an agitator protruding in the center of the tub. An agitator washer that agitates the wash water and the laundry to be washed, and a drum washing machine that washes the laundry while rotating the drum which is rotatably installed in the tub to raise and drop the laundry. .

In general drum washing machine, washing time is determined by the weight of washing water which was detected initially regardless of the degree of contamination of the wash water. This leads to an increase in washing time. In order to solve this problem, a washing machine is disclosed to improve washing ability by measuring the degree of contamination of the washing water when the washing water in the washing tank is contaminated in the washing process to control the drainage and rinsing of the washing water. An example of a washing machine having such a turbidity detection sensor is disclosed in Korean Laid-Open Patent Publication No. 1998-078252 (Nov. 16, 1998).

The washing machine disclosed in the publication includes a washing tank for washing laundry by washing water generated by receiving laundry and washing water, a turbidity detecting sensor installed in the vicinity of the washing tank, and detecting a degree of contamination of the washing water, and a turbidity detecting sensor. When the signal from the turbidity sensor is less than the set value, the drainage and dehydration process is executed by comparing the signal corresponding to the pollution level of the wash water applied from the turbidity sensor to the If the applied signal is greater than the set value is configured to include a microcomputer to repeat the draining process, rinsing process and water supply process.

The washing machine of the Republic of Korea Patent Publication No. 1998-078252 has been provided a method for determining the time of washing completion by detecting the degree of contamination of the wash water. However, the washing machine disclosed in the Republic of Korea Patent Publication No. 1998-078252 is attached to the detection unit of the turbidity sensor, even though there is a problem that a malfunction occurs due to the adhesion of the contaminants due to the scale of the turbidity sensor is mounted inside the washing tank. Since the user is not easy to clean, there is a problem that the washing time and the rinsing frequency are small, so that the desired washing and rinsing effect cannot be obtained.

The present invention is to solve the above problems, the turbidity sensor is mounted on the filter unit provided on the drainage flow path, so that the user can easily remove the foreign matter attached to the detection unit of the turbidity sensor, more accurately detect the turbidity It is possible to provide a drum washing machine that can double the reliability in turbidity detection.

Drum washing machine according to the present invention, the main body forming the appearance, a tub provided in the main body to accommodate the wash water, a drain pump for forcibly discharging the wash water to the outside, a drain passage for connecting the tub and the drain pump, and drainage Including a turbidity sensor mounted on the flow path is characterized in that the user can easily remove the foreign matter attached to the sensing portion of the turbidity sensor. The turbidity sensor is characterized in that it is mounted to be adjacent to the front of the body.

In addition, the drainage passage is provided with a filter unit that is coupled to the front lower end of the body to filter the foreign matter of the wash water, the turbidity sensor is characterized in that it is installed in the filter unit.

In addition, the filter unit forms a filter chamber, and an open filter case at one end, a filter installed in the filter chamber to filter foreign substances in the wash water passing through the filter chamber, and to open and close the opening of the filter case. It includes an opening and closing device rotatably coupled to one end of the filter, the turbidity sensor is characterized in that coupled to the insertion hole provided on the upper surface of the filter case.

In addition, the turbidity sensor is exposed to the outside depending on whether the opening and closing device is characterized in that the foreign matter can be easily removed. Here, the drum washing machine is characterized in that it includes a control unit for comparing and determining the turbidity detected by the turbidity sensor to adjust the number of rinsing of the wash water.

In addition, the drum washing machine according to the present invention flows the wash water so that the main body forming the appearance, the tub provided in the main body to receive the wash water, and the wash water drained from the tub is returned to the tub or discharged to the outside of the main body To be characterized in that it comprises a pump, and a turbidity sensor mounted on the pump.

The present invention is equipped with a turbidity sensor mounted on the filter unit provided on the drainage flow path to improve the user's access to the turbidity sensor to facilitate the removal of foreign matter attached to the turbidity sensor during the washing process to double the reliability in turbidity detection. It can be effective.

The drum washing machine according to the present invention, as shown in Figure 1, the main body 100 to form an appearance for the fresh water of the wash water, the tub 110 installed in the main body 100, the tub 110 The drum 120 is rotatably installed therein, and the drive motor 130 is installed below the tub 110 to rotate the drum 120 inside the tub 110. In addition, the drum washing machine is installed on top of the tub 110 and includes a water supply device 140 for supplying the wash water to the tub 110 and a detergent supply device 150 for supplying detergent in the water supply process, It is installed in the lower portion of the tub 110 is connected to the drain pump 400 for forcibly discharging the wash water of the tub 110 to the outside, the tub 110 and the drain pump 400 is connected to the wash water to the outside The guide includes a drain passage 200.

Here, openings are formed at corresponding positions to the front of the main body 100 so that laundry can be put into or taken out of the drum 120, and a door 160 for opening and closing the openings is provided at the front of the main body 100. ) Is installed. The drum 120 inside the tub 110 is rotatable in the center of the tub 110 by being rotatably supported at the rear center of the tub 110. In addition, the pulley is coupled to the rotary shaft extending to the rear of the tub 110, the pulley coupled to the rotary shaft of the drive motor 130 is connected through the belt 170. Therefore, when the driving motor 130 rotates, the drum 120 is rotated. In addition, the drum 120 has a plurality of through-holes formed around it, and a plurality of lifters 121 are installed on the inner surface so that the laundry can be raised and dropped when rotating.

In addition, the detergent supply device 150 is a detergent case 151 installed on the front side of the main body 100 and a detergent container 152 mounted in a drawer form to enter the detergent case 151 from the front of the main body 100. It includes. This allows the user to draw detergent into the detergent container 152 after withdrawing the detergent container 152 to the front. Water supply device 140 is the first water supply pipe 141 connecting between the external water supply pipe 141 and the detergent case 151, the second water supply pipe 143 connecting between the detergent case 151 and the tub 110, And water supply valves 144 installed at an inlet side of the first water supply pipe 142 for water supply control. This is because the water supplied when the water supply is made by the opening of the water supply valve 144 is supplied to the tub 110 via the detergent supply device 150 so that the tub of the detergent supply device 150 is supplied with water. It can be supplied to (110).

The drainage passage 200 provided below the tub 110 is connected to the lower end of the front surface of the main body 100 to form an exterior to facilitate the user's accessibility. The drainage passage 200 has a filter unit 300 for filtering foreign substances of the washing water discharged from the tub 110 and a drain pump 400 for forcibly discharging the washing water passed through the filter unit 300 to the outside. Prepared. In addition, the drainage passage 200 has a first drain pipe 210 connecting between the tub 110 and the filter unit 300, and a second drain pipe 220 connecting between the filter unit 300 and the drain pump 400. And, to further comprise a third drain pipe 230 extending from the drain pump 400 to the outside of the main body 100. In addition, the drum washing machine according to the present invention may further include a display unit (not shown) for displaying various states. The turbidity sensor detection unit 501 displays a contamination warning message on the display unit (not shown) according to the detected setting level. That is, by displaying the contamination warning message according to the pollution degree of the turbidity sensor detection unit 501, it is possible to inform the user of the contamination state of the turbidity sensor 500.

As shown in FIG. 2, the filter unit 300 is provided under the front surface of the main body 100 to form a filter chamber 320 and has a cylindrical filter case 310 having an opening 330 formed at one end thereof, and a filter chamber. One end of the filter 340 installed in the filter chamber 320 to filter the foreign matter of the wash water passing through the 320 and the user to open and close the opening 330 of the filter case 310. It is configured to include a switch 350 that is rotatably coupled to. Here, the filter case 310 is formed with an inlet 360 through which washing water flows into one side, and an inlet pipe 370 for connecting with the first drain pipe 210 is provided at the inlet 360. And the other side of the filter case 310 is formed with an outlet associated with the drain pump 400 side, the outlet pipe 390 for the connection of the second drain pipe 220 is formed at this outlet.

Turbidity sensor 500 according to the present invention is formed on the bottom surface of the tub 110 is mounted to the drain flow path 200 for guiding the water drained from the tub 110 to the outside, in detail provided in the lower front of the body It is to be installed in the filter unit 300. More specifically, the turbidity sensor 500 is fixed to the filter unit 300 by being inserted into the insertion hole 311 formed on the upper surface of the filter case 310. Since the filter unit 300 has an opening and closing device 350 connected to the front lower end of the main body 100 integrally formed with the filter 340, the opening and closing device 350 rotates and pulls the opening and closing device 350 in one direction. The filter case 310 may be separated separately. Therefore, the turbidity sensor 500 mounted on the upper surface of the filter case 310 is exposed to the outside while being provided in the filter chamber 340. That is, referring to FIG. 3, the turbidity sensor 500 is exposed to the outside depending on whether the opening and closing device 350 is coupled so that the user can easily remove foreign substances. Therefore, the user can remove the foreign matter attached to the detection unit 501 of the turbidity sensor 500 during the washing process, and thus the turbidity sensor 500 can more accurately detect turbidity, thereby doubling the reliability in turbidity detection. To help.

The following describes the turbidity detection operation of the drum washing machine according to the present invention constituting the configuration as described above. When the washing process starts, the wash water in a clean state is introduced into the tub 110. The washing and circulation of the washing water is performed by the set time and the number of times, and the draining process is started when the set time and the number of washing cycles of the set washing water are reached. When the draining process is started, the contaminated washing water is discharged to the outside through the drain flow path 200 connected to the tub 110 and the drain pump 400. The wash water discharged here passes through the turbidity sensor 500, and the turbidity sensor 500 detects turbidity of the discharged wash water and sends it to a controller (not shown). Meanwhile, the controller (not shown) determines the turbidity value sent from the turbidity sensor 500 to determine whether the washing process is to be further performed or whether to proceed to the rinsing step. When the contamination warning message is displayed on the display unit (not shown) according to the degree of contamination of the turbidity sensor detection unit 501, the user can easily remove the foreign matter attached to the detection unit 501 of the turbidity sensor 500. Therefore, the turbidity sensor 500 can more accurately detect the turbidity, thereby obtaining a clean and hygienic washing effect.

In addition, another embodiment according to the present invention as shown in Figure 4 is a tub (not shown) is provided in the main body (not shown) and the wash water drained from the tub returned to the tub or to the outside of the main body It comprises a pump 40 for flowing the wash water to be discharged, and a turbidity sensor 500 mounted to the pump 40. The pump 40 is connected to the tub through the first drain pipe 50. In the present invention, the pump 40 pumps the wash water drained through the first drain pipe 50 to force the discharge to the outside of the washing machine or to circulate back to the tub. The pump 40 includes a pump case 40a having a washing water inlet chamber 41, a first pump chamber 42, and a second pump chamber 43, and a pump filter 40b installed in the washing water inlet chamber 41. ). The first pump chamber 42 and the second pump chamber 43 are configured to face each other with the wash water inflow chamber 41 therebetween. In addition, the first pump chamber 42 has a first suction port 42c for suctioning the washing water in the washing water inlet chamber 41 and a first discharge port for discharging the washing water pumped by the impeller 42a to the outside ( 42d). The first discharge port 42d is connected to the second drain pipe 60. Similarly, the second pump chamber 43 has a second suction opening 43c for sucking the washing water in the washing water inlet chamber 41 and a second discharge port 43d through which the washing water pumped by the impeller 43a is discharged. Has The second discharge port 43d extends upward and is connected to the wash water circulation pipe 70 at an end thereof. As shown in FIG. 4, the turbidity sensor 500 is installed in the pump case 40a which forms the outer edge of the pump filter 40b so that the user attaches the foreign matter attached to the sensing part of the turbidity sensor 500 during the washing process. It can be easily removed by opening and closing the through the handle of the pump filter (40b). Accordingly, the turbidity sensor 500 can more accurately detect turbidity, thereby doubling the reliability of the turbidity detection. As described above, since the turbidity sensor 500 according to the present invention is installed on a flow path including the pump adjacent to the front lower end of the main body so that the user's accessibility is improved, the purpose of the present invention It will be readily understood by those skilled in the art that various changes may be made in form and detail without departing from the scope of the present invention.

1 is a perspective view showing a drum washing machine according to the present invention.

Figure 2 is a perspective view showing a structure equipped with a turbidity sensor according to the present invention.

3 is a cross-sectional view showing a structure equipped with a turbidity sensor according to the present invention.

Figure 4 is a perspective view showing a structure equipped with a turbidity sensor according to another embodiment of the present invention.

<Description of Signs of Major Parts of Drawings>

100: body 110: tub

120: drum 130: drive motor

140: water supply device 150: detergent supply device

160: door 200: drainage passage

300: filter unit 310: filter case

340 filter 400 drain pump

500: Turbidity Sensor

Claims (7)

The main body forming the appearance, A tub provided in the main body to accommodate washing water; A drain pump for forcibly discharging the washing water to the outside; A drain passage connecting the tub to the drain pump; A drum washing machine comprising a turbidity sensor mounted to the drain passage. The method of claim 1, The turbidity sensor is mounted to the drum washing machine, characterized in that adjacent to the front. The method of claim 1, The drainage passage is provided with a filter unit for filtering foreign matter of the wash water, the turbidity sensor is a drum washing machine, characterized in that installed in the filter unit. The method of claim 3, wherein The filter unit forms a filter chamber and has a filter case open at one end, a filter installed in the filter chamber to filter foreign substances in the wash water passing through the filter chamber, and the opening and closing of the filter case. And an opening and closing device rotatably coupled to one end of the filter, wherein the turbidity sensor is coupled to an insertion hole provided on an upper surface of the filter case. The method of claim 4, wherein The turbidity sensor is exposed to the outside depending on whether the opening and closing device is coupled to the drum washing machine, so that foreign matter can be easily removed. The method of claim 1, The drum washing machine comprises a control unit for determining the turbidity detected by the turbidity sensor, the drum washing machine, characterized in that to adjust the number of times of washing or rinsing of the wash water. The main body forming the appearance, A tub provided in the main body to accommodate washing water; A pump for flowing the wash water so that the wash water drained from the tub is returned to the tub or discharged to the outside of the main body; Drum washing machine comprising a turbidity sensor mounted to the pump.

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