FR2920291A1 - DEVICE FOR DETECTING THE WATER LEVEL OF A DISHWASHER - Google Patents

Abstract

Device for detecting the water level of a dishwasher (100), comprising a washing tub (110) containing dishes and a water level detector disposed in the washing tub (110) which changes position as a function of the water level in the wash tub (110); alternatively comprising a washing tub (110) for containing the dishes, a float (200) disposed in the wash tub (110), which rises and falls depending on the level of water in the wash tub (110) , and a detection unit which detects a water level corresponding to a position of the float (200). It is possible to minimize the influence on the capacity of the washing tub (110) of the installation of a detector water level, to accurately detect the amount of water in the wash tank (110) and to obtain stability of the float (200) when rising and falling.

Description

DEVICE FOR DETECTING THE WATER LEVEL OF A DISHWASHER

The present invention relates to a dishwasher, and in particular, a device for detecting the water level of a dishwasher. A dishwasher is a machine for washing dirt left on dishes (eg dishes, cups, bowls, and the like) by blowing high pressure wash water onto the dishes in a tub or wash chamber. Such a dishwasher is configured so that the dishes are washed using wash water containing a detergent and the washed dishes are dried. In order to detect the amount of water supplied, a method for detecting the amount of water supplied using a flow meter is present in conventional dishwashers. The flowmeter is installed outside the wash tub to detect the amount of water supplied. According to the conventional method using the flowmeter, as the flowmeter is installed outside the washing tub, the volume of the washing tub is reduced by a volume corresponding to the space required for the installation of the flow meter, for example. therefore the use of space is changed. In addition, since the flowmeter installed outside the wash tub is connected to the wash tub via a connecting pipe, water can flow from the connection portion. The leak can put the dishwasher out of action and make it impossible to accurately detect the amount of water.

In addition, if the conventional detection method is applied in the case where a small amount of water is used, for example a small dishwasher, it may be difficult to accurately detect the amount of wash water. . Therefore, an object of the present invention is to provide a water level sensing device in a dishwasher that is capable of minimizing the influence on the capacity of a wash tub and accurately detecting the amount of water. of water. In one aspect of the present invention, a water level sensing device in a dishwasher is provided, comprising: a wash tub for holding the dishes and a water level sensor disposed in the wash tub and whose position is changed depending on the water level in the wash tub. In another aspect of the present invention, a water level sensing device in a dishwasher is provided, comprising: a wash tub for holding dishes, a float disposed in the wash tub and mounting and descends according to the water level in the wash tub and a sensing unit that detects a water level corresponding to a position of the float.

In accordance with the water level detecting device of the dishwasher according to the present invention, the water level detecting device comprises the water level detector composed of the float and the detection unit, and its position is changed according to the water level in the wash tub because it is disposed inside the wash tub, so it is not necessary to additionally fix a detector to the outside of the wash tub to detect the level of water in the wash tub. Therefore, it is not necessary to reserve a space for the installation of a water level sensor outside the wash tub, which maximizes the capacity of the wash tub. Thus, it is possible to minimize the influence on the capacity of the washing tub of the installation of a water level detector, and to accurately detect the amount of water in the wash tank. In addition, according to the dishwasher water level sensing device, a lid is configured to encompass the float and an inlet for the wash water is formed at a lower end of the lid. The wash water is introduced through this port and it is possible to prevent the wash water from flowing into other parts. Thus, the cover can prevent the float from being affected by a flow force of the wash water, for example waves on the surface of the wash water. Therefore, it is possible to accurately detect the water level in the wash tub and the float can steadily descend and rise in the lid. In addition, according to the device for detecting the water level of the dishwasher, a unit for preventing adhesion is interposed between the float and the washing tub, therefore the float does not come into direct contact with the tub. washing but is in contact with the adhesion prevention unit when the float descends. Thus, the contact area between the float and the wash tub is reduced, which prevents the float from adhering to the wash tub due to moisture. Therefore, it is possible to prevent the phenomenon that the float does not rise in a normal manner due to its adherence to the lower surface of the wash tub when the water level rises and the float s' raise again. In addition, according to the device for detecting the water level of the dishwasher, as a protrusion protrudes from an upper end surface of the float towards the lower end of the lid of a specific height, the float does not enter directly. in contact with the lid when it rises. Therefore, it is possible to prevent the phenomenon that the float does not operate normally due to its adhesion to the lid. In various embodiments of the device for detecting the water level of the dishwasher according to the invention, it may optionally be resorted to furthermore to one and / or the other of the following provisions: - the level detector d water comprises a float that rises and falls depending on the water level in the wash tub and a sensing unit detecting the water level corresponding to a position of the float; the device further comprises a cover covering the water level detector; an inlet for the wash water is formed at a lower side of the lid to bring the wash water to a lower side of the water level detector; the inlet of the wash water is formed between a lower end of the lid and a lower surface of the washing tub; According to a second aspect of the invention, there is provided a device for detecting the water level of a dishwasher comprising: a washing tub for containing the dishes; a float disposed in the wash tub that rises and falls depending on the level of water in the wash tub; and a detection unit which detects a water level corresponding to a position of the float. In various embodiments of the device for detecting the water level of the dishwasher according to this second aspect of the invention, it may optionally be resorted to furthermore to one and / or the other of the following provisions: float is connected to the wash tub so that it can be operated within a specific range; - The float is coupled to the wash tank by joints; a magnet and a main switch are respectively arranged on the float and the detection unit corresponding to the latter; a magnet is disposed at the level of the float and the main switch is arranged at the level of the detection unit; a magnet is disposed on a line passing vertically through a center of gravity of the float; the detection unit is disposed at a position corresponding to a level of water to be detected in the washing tank; the level of water to be detected is within the normal level, the over-supply level, and the zero level of the wash tub; - an adhesion prevention unit is installed between the wash tub and the float to prevent adherence of the float on a specific part of the wash tub; the adhesion prevention unit comprises a protuberance formed at least on the float and the parts of the washing tub facing the float; - The float is implemented in the form of foam; the float is connected to the washing tank by a connection unit formed integrally with the float in the form of a foam; and the device further comprises a float housing in which the float is installed and connected to the wash tub. Other objects, features, aspects and advantages of the present invention will become more apparent upon reading the detailed description of the present invention, in conjunction with the accompanying drawings. The accompanying drawings, included to facilitate understanding of the present invention, and incorporated into this specification, constitute a part thereof; they illustrate embodiments of the present invention and, with the description, are intended to explain the principles of the present invention. In the drawings: Fig. 1 shows a schematic view showing a dishwasher in accordance with a first exemplary embodiment of the present invention; Figure 2 shows a perspective view showing a float in a disassembled state, adapted to a water level detecting device of the dishwasher in accordance with the first exemplary embodiment of the present invention; FIG. 3 shows a sectional view partially showing a washing tub on which a detection unit adapted to the device for detecting the water level of the dishwasher is arranged in accordance with the first embodiment serving as an example of the present invention; Fig. 4 shows a sectional view showing that the float detects a zero level in accordance with the first exemplary embodiment of the present invention; Fig. 5 shows a sectional view showing that the float of Fig. 4 detects a normal level; Figure 6 shows a sectional view showing that the float of Figure 5 detects an over-supply level; Figure 7 shows a perspective view showing a lid adapted to a water level detecting device of a dishwasher in accordance with a second exemplary embodiment of the present invention; Fig. 8 is a sectional view showing that the cover is disposed in accordance with the second exemplary embodiment of the present invention; Fig. 9 is a sectional view showing that an adhesion preventing unit is adapted to a water level detecting device of a dishwasher in accordance with a third embodiment in lieu of example of the present invention; Fig. 10 shows a perspective view showing the adhesion prevention unit according to the third exemplary embodiment of the present invention; Fig. 11 is a perspective view showing a float adapted to a water level detecting device of a dishwasher according to a fourth exemplary embodiment of the present invention; Fig. 12 shows a sectional view showing that the float is mounted on a wash tub according to the fourth exemplary embodiment of the present invention; and Fig. 13 shows a perspective view showing a float in a disassembled state, adapted to a water level detecting device of a dishwasher according to a fifth embodiment of the present invention. A detailed description of the present invention with reference to the accompanying drawings will now be given. Figure 1 shows a schematic view showing a dishwasher in accordance with a first embodiment of the present invention. Referring to Fig. 1, a dishwasher 100 in accordance with the first exemplary embodiment of the present invention comprises: a wash tub 110 installed within a box 101, a door 102 in order to close and open the wash tub 110, and a storage drawer 103 installed in the wash tub 110 for receiving the dishes (eg dishes, cups, bowls, and the like). In addition, the dishwasher 100 further comprises a sump 106 installed in a lower portion of the wash tank 110 to contain the wash water, a turbine 107 configured to pump the wash water contained in the sump 106 , and a washing motor 108 for driving the turbine 107. The dishwasher 100 further comprises a nozzle device 200 for spraying the wash water pumped from the sump 120 onto the washing dishes, and a rotating nozzle 104. The nozzle device 200 is attached to the rear portion of the wash tub 110 to spray the wash water onto the dishes. In addition, the rotating nozzle 104 is rotated by the spray pressure of the wash water under the storage drawer 103, to spray the wash water onto the dishes. By spraying the wash water, the dirt on the dishes can be removed, and so the dishes can be washed. FIG. 2 shows a perspective view showing a float in a disassembled state, adapted to a device for detecting the water level of the dishwasher in accordance with the first exemplary embodiment of the present invention, and FIG. 3 shows a sectional view partially showing a washing tub on which a detection unit adapted to the device for detecting the water level of the dishwasher is arranged in accordance with the first embodiment serving as an example of the present invention. With reference to FIGS. 2 and 3, the float 200 adapted to the water level detecting device of the dishwasher in accordance with the present embodiment comprises a float body 210, connection rods 220, rotation shafts 231, a magnet anchor unit 250, and a magnet 260. The float 200 is disposed in the wash tub 110, and rises and falls according to the water level in the wash tub 110. In addition, washing tub 110 of the dishwasher is provided with a shaft coupling unit 120 and a detection unit. The shaft coupling unit 120 is provided with shaft insertion holes 121. The detection unit may comprise a zero level detection portion 150, a normal level detection portion 151, and a portion of over-supply level detection 152. The detection unit detects a water level corresponding to the position of the float 200 which goes up and down. A main detector can be used for the detection unit. The float 200 and the detection unit are arranged in the washing tank 110 in order to detect the water level in the washing tank 110. In this aspect, the float 200 and the detection unit can be defined as a water level detector.

The floating body 210 is implemented in the form of foam, therefore it floats on the water. The floating body 210 rises or falls depending on the water level in the wash tub, and is thus able to detect the water level. The rotation shafts 231 are connected to the floating body 210 through the connecting rods 220. Shaft supports 230 are formed at each end of the connecting rods 220. In addition, the rotation shafts 231 project from the Shaft supports 230. Rotating shafts 231 are rotatably inserted into the shaft insertion holes 121 formed at the shaft coupling unit 120 of the wash tub 110. A numerical reference 240 indicates a rod support connecting the plurality of connecting rods 220 to each other in order to increase the rigidity of the latter. The float 200 is coupled to the wash tub 110 via the rotation shafts 231 and shaft insertion holes 121 through hinges to be operated within a specific range. Articulation coupling is simply an example of a way of coupling float 200 to wash tub 110. Several ways are possible to connect float 200 to wash tub 110 so that the float can be connected. activated within the specific range.

The anchoring unit of the magnet 250 is disposed under the floating body 210. The insertion hole of the magnet 251 is formed therein. The magnet 260 is inserted into the insertion hole of the magnet 251. The main detector of the detection unit reacts to the magnet 260, therefore it is able to detect the level of water in the tank The anchoring unit of the magnet 250 is formed at a position where the magnet 260 is disposed on a line which passes vertically through a center of gravity of the float 200. Then, it is possible to prevent the float 200 from tilting due to the weight of the magnet 260 and to maintain a stable state during operation. The connecting rods 220, the shaft supports 230, the rotation shafts 231, the rod support 240 and the anchoring unit of the magnet 250 can be implemented in the form of a foam so as to be part of the As a result, the float 200 floats easily over the wash water and is easily manufactured. The shaft coupling unit 120 is formed at the wash tub 110. The shaft insertion holes 121 are formed at the shaft coupling units 120, and the float rotation shafts 231. 200 are rotatably coupled to the shaft insertion holes 121. That is, the shaft insertion holes 121 and the rotation shafts 231 serve as the center of rotation for the float 200. detection unit is disposed on a wall of the washing tank 110 to detect the water level corresponding to a position of the float 200. In detail, the detection part of the zero level 150, the detection part of the level Normal 151, and the overflow level detection portion 152 are spaced apart from each other by a specific distance on a specific radius (R) which centers the shaft insertion holes 121. Accordingly, each of the portions of detection interacts with the float 200 of my This will be explained with reference to FIGS. 4 to 6. It will be seen here that the detection portions detect a zero level, a normal level and an oversupply level in the chamber. washing tub, but this as an example. That is, the sensing portions are disposed at positions that correspond to a water level necessary to be detected in order to detect the required level. The required level can be one of the levels or be different levels. Figures 4 to 6 show the operation of the dishwasher water level detecting device in accordance with the first exemplary embodiment of the present invention. Fig. 4 shows a sectional view showing that the float detects a zero level in accordance with the first exemplary embodiment of the present invention, Fig. 5 shows a sectional view showing that the float of Fig. 4 detects a normal level, and Figure 6 shows a sectional view showing that the float of Figure 5 detects an over-supply level. The operation of the water level detecting device according to the present embodiment with reference to Figs. 4 to 6 is presented hereinafter. First, as can be seen in FIG. 4, in a state in which the float 200 is located at the bottom of the wash tub 110, the magnet 260 of the float 200 faces the zero level detecting portion. 150. Thus, the zero level detecting portion 150 detects the zero level in the wash tub 110. Then, if the water level rises as the wash tub 110 is filled with the water washing, the float 200 can rise. During the climb, as can be seen in FIG. 5, when the magnet 260 reaches a position facing the detection portion of the normal level 151, the normal level detecting portion 151 detects that the water level is normal in the washing tub 110. Then, a control device (not shown) can transmit signals indicating to stop the supply of the wash tub 110 in wash water to a water supply system. Then, if the water level rises further as the wash tub 110 is further filled with wash water because the wash water supply in the wash tub 110 continues, the float 200 can rise further. During the climb, as can be seen in FIG. 6, when the magnet 260 reaches a position facing the overflow level detecting portion 152, the overflow level detecting portion 152 detects that the water In this case, the control device may transmit signals indicative of partially discharging the wash water into the wash tank 110 to an evacuation system. Thus, the water level detector composed of the float 200 and the detection unit is disposed in the washing tub 110 and detects the level of water in the washing tub 110, therefore it is not necessary to additionally fix a detector outside the wash tank 110 to detect the water level in the wash tank 110. Thus, it is not necessary to reserve a space for the installation of a water level detector outside the wash tub 110, which maximizes the capacity of the wash tub 110. Thus, it is possible to minimize the influence on the capacity of the wash tub 110 of the installation of a water level detector, and to accurately detect the amount of water in the wash tank 110. Hereinafter, other embodiments of the present invention will be explained in detail. reference to the accompanying drawings. Parts of the description identical to those of the first exemplary embodiment will be omitted. Fig. 7 shows a perspective view showing a lid adapted to a water level detecting device of a dishwasher in accordance with a second exemplary embodiment of the present invention, and Fig. 8 shows a sectional view showing that the cover is arranged in accordance with the second exemplary embodiment of the present invention. With reference to Figures 7 and 8, in the present embodiment, the float 200 is coupled to the shaft coupling units 120 of the wash tub 110 by hinges, and a cover 300 covers an upper side of the float 200. The cover 300, as can be seen in FIG. 7, includes the float 200. An inlet of the wash water 320 is formed between a lower end of the cover 300 and a lower surface of the wash tub 110. Through this inlet of the wash water 320, the wash water is introduced into a lower side of the float 200, and it is possible to prevent the wash water from flowing. in other parts. Thus, the cover 300 can prevent the float 200 from being affected by a flow force of the wash water, for example, waves on the surface of the wash water. Therefore, it is possible to accurately detect the water level in the wash tank 110 and the float 200 can steadily descend and mount in the cover 300.

Since the cover 300 includes the float 200, it is possible to minimize the phenomenon that the float 200 is fouled by waste washing water contained in the wash tank 110. In this aspect, since the cover 300 is used to to prevent the water level sensor composed of the float 200 and the detection unit from becoming fouled, it can be defined as a unit preventing fouling. Hereinafter, other components for preventing fouling of the water level sensor can also be defined as the fouling preventing unit. A numeral 310 indicates a unit forming a floating orifice forming a space for the float 200 to descend and ascend. FIG. 9 is a sectional view showing that an adhesion prevention unit is adapted to a device for detecting the water level of a dishwasher in accordance with a third embodiment serving as an example. of the present invention, and Fig. 10 is a perspective view showing the adhesion prevention unit according to the third exemplary embodiment of the present invention. Referring to Figures 9 and 10, the adhesion prevention unit 112 is disposed on the water level detecting device of the present embodiment. The protrusion adhesion prevention unit 112 protrudes from a lower surface 111 of the wash tank 110 by a specific height and comes into contact with the descending float 200. adhesion prevention 112 has points of contact with the float 200. As the float 200 descends and comes into contact with the adhesion prevention unit 112, the float 200 does not come into direct contact with the float 200. Thus, the contact area between the float 200 and the wash tub 110 is reduced, which prevents the float 200 from adhering to the wash tub 110 due to moisture. Therefore, it is possible to prevent the phenomenon that the float 200 does not rise in a normal manner due to its adherence to the lower surface 111 of the wash tank 110 when the water level rises and the float 200 rises again. In addition, the adhesion prevention unit 112 prevents the float 200 from directly contacting the lower surface 111 of the wash tub 110, so it is possible to prevent the float 200 from becoming fouled. because of wastes in the wash water that can flow to the bottom surface 111 and accumulate there. Here, the adhesion prevention unit 112 is presented as a protuberance projecting from the lower surface 111 of the wash tub 110, but this is only exemplified. That is, the protrusion may be formed at the bottom of the float 200 or formed on both the float 200 and the wash tub 110. Fig. 11 shows a perspective view showing a lid adapted to a water level detecting device of a dishwasher in accordance with a fourth exemplary embodiment of the present invention, and Fig. 12 is a sectional view showing that the float is mounted on a wash tub according to the fourth exemplary embodiment of the present invention. Referring to Figures 11 and 12, in the present embodiment, the cover 300 covers the upper side of the float 200 and a protuberance 211 is formed on an upper end surface of the float 200. The protuberance 211 projects from the upper end surface. float 200 to the lower end of the lid 300 of a specific height, and comes into direct contact with the lid 300 when the float 200 rises. Preferably the protuberance 211 has points of contact with the cover 300. The protuberance 211 may be formed of several elements on the upper end surface of the float 200. Due to the protuberances 211, the float 200 does not come into direct contact with the float 200. the lid 300 when the float 200 rises. Therefore, it is possible to prevent the phenomenon that the float 200 does not operate in a normal way because of its adhesion to the lid 300. Moreover, because of the protuberances 211, it is possible to prevent the float 200 from directly contacting the lid 300, which prevents the fouling of the upper part of the float 200.

Here, protuberances 211 are described as protruding from the upper end surface of float 200, but this is given as an example. That is, protuberances 211 may protrude from a lower end surface of cover 300 or be formed on both float 200 and cover 300. FIG. 13 shows a perspective view showing a float in a disassembled state, adapted to a device for detecting the water level of a dishwasher in accordance with a fifth embodiment of the present invention.

Referring to Fig. 13, a float 400 applied to the water level detecting device in the present embodiment comprises a floating body 410 in the form of a foam, and a floating casing 420 having an internal groove 421 in which the body floating 410 is inserted not in the form of foam. The floating casing 420 is integrally formed with the connecting rods 430, a rod support 440, shaft supports 450, and rotation shafts 451. The components identical to those of the first embodiment in lieu of example will be omitted. The float 400 can go up and down according to the level of water in the washing tank 110 because of the buoyancy of the floating body 410 inserted in the floating case 420. In accordance with the device for detecting the water level of the dishwasher in In accordance with the present invention, the float and detection unit water level detector is disposed in the wash tub, and thus detects the level of water in the wash tub, therefore It is not necessary to additionally fix a detector outside the wash tub to detect the level of water in the wash tub. Therefore, it is not necessary to reserve a space for the installation of a water level sensor outside the wash tub, which maximizes the capacity of the wash tub. Thus, it is possible to minimize the influence on the capacity of the washing tub of the installation of a water level detector, and to accurately detect the amount of water in the wash tank. In addition, according to the water level sensing device of the dishwasher, a lid is configured to encompass the float, and the wash water inlet is formed at the lower end of the dish. lid. The wash water is introduced through this port and it is possible to prevent the wash water from flowing into other parts. Thus, the cover can prevent the float from being affected by a flow force of the wash water, for example waves on the surface of the wash water. Therefore, it is possible to accurately detect the water level in the wash tub, and the float can move down and steadily rise in the lid. In addition, according to the device for detecting the water level of the dishwasher, the adhesion preventing unit is interposed between the float and the washing tub, therefore the float does not come into direct contact with the dish. the wash tub but is in contact with the adhesion prevention unit when the float descends. Thus, the contact area between the float and the wash tub is reduced, which prevents the float from adhering to the wash tub due to moisture. Therefore, it is possible to prevent the phenomenon that the float does not rise in a normal manner due to its adherence to the lower surface of the wash tub when the water level rises and the float s' raise again. In addition, according to the device for detecting the water level of the dishwasher, as the protrusion protrudes from the upper end surface of the float towards the lower end of the lid of a specific height, the float does not enter directly. in contact with the lid when it rises. Therefore, it is possible to prevent the phenomenon that the float does not operate normally due to its adhesion to the lid. The above embodiments and advantages are given by way of example only and should not be construed as limiting the present description. The present teachings can easily be applied to other types of apparatus. The present description is intended to illustrate, and in no way to limit the scope of the claims. Many modifications and variations will become apparent to those skilled in the art. The features, structures, methods, and other features of the embodiments, described herein by way of example, may be combined in various ways to provide examples of additional or different embodiments. Since the present features may be embodied in different shapes without departing from the features of the latter, it is also to be understood that the embodiments described above are not limited by the details of the description above, unless otherwise indicated. but should instead be broadly construed as falling within its scope as defined in the appended claims, and thus all modifications falling within the scope of the claims, or equivalents thereof, are

Claims (18)

A water level detecting device of a dishwasher (100), comprising: a washing tub (110) containing the dishes; and a water level sensor disposed in the wash tub (110) and whose position is changed according to the level of water in the wash tub (110). Apparatus according to claim 1, wherein the water level detector comprises a float (200) which rises and falls depending on the water level in the wash tub (110), and a sensing unit detecting the water level. water level corresponding to a float position (200). 3. Device according to claim 1, further comprising a cover (300) covering the water level detector. The device of claim 3, wherein a wash water inlet (320) is formed at a lower side of the lid (300) to bring the wash water to a lower side of the water level detector. The device of claim 4, wherein the wash water inlet (320) is formed between a bottom end of the lid (300) and a bottom surface (111) of the wash tub ( 110). A water level detecting device of a dishwasher (100), comprising: a wash tub (110) for containing the dishes; a float (200) disposed in the wash tub (110) and rising and falling as a function of the water level in the wash tub (110); and a detection unit which detects a water level corresponding to a position of the float (200). The apparatus of claim 6, wherein the float (200) is connected to the wash tub (110) to be operable within a specific range. 10 8. Device according to claim 7, wherein the float (200) is coupled to the washing tub (110) by joints. 9. Device according to claim 6, wherein a magnet (260) and a main switch are respectively disposed on the float (200) and the detection unit corresponding thereto. The device of claim 9, wherein the magnet (260) is disposed at the float (200) and the main switch is disposed at the sensing unit. 11. Device according to claim 9 or 10, wherein the magnet (260) is disposed on a line passing vertically through a center of gravity of the float (200). 12. Device according to claim 6, wherein the detection unit is disposed at a position corresponding to a water level to be detected in the wash tank (110). 20 Apparatus according to claim 12, wherein the level of water to be detected is within the normal level (151), the oversupply level (152), and the zero level (150) of the wash tub (110). ). The device of claim 6, wherein an adhesion prevention unit (112) is installed between the wash tub (110) and the float (200) to prevent adhesion of the float (200). on a specific portion of the wash tub (110). The device of claim 14, wherein the adhesion prevention unit (112) comprises a protuberance (211) formed at least on the float (200) and the portions of the wash tub (110) making facing the float (200). 15 16. Device according to claim 6, wherein the float (200) is implemented in foam form. Apparatus according to claim 16, wherein the float (200) is connected to the wash tub (110) by a connecting unit integrally formed with the float (200) in the form of a foam. The apparatus of claim 16, further comprising a float housing (200) in which the float (200) is installed and connected to the wash tub (110). 18