JPS60197216A - Water filtering apparatus - Google Patents

Abstract

PURPOSE:To attain cost reduction and, at the same time, to properly set the amount of water supplied into a main body case, by providing a water flooding port communicated with the open air to the water inflow chamber in the main body case and providing a flow amount display device of water flowed out from the water outlet provided to a water outflow chamber. CONSTITUTION:The interior of a main body case 17 is divided by a filter member 21 so as to form a water inflow chamber 22 and a water outflow chamber 23 positioned outside and inside the filter member 21 and the water flooding port 26a of the main body case 17 is communicated with the open air. Further, a flow amount display device is provided on the way of a water supply pipe 8. As a result, even if a tap water cock is largely opened when the filter member 21 is brought to a clogging state, the display value of the flow amount display device can nor reach a predetermined value and, theredore, the clogging state of the filter member 21 can be confirmed. In addition, it is unnecessary to form the main body case 17 into a pressure resistance structure because of the presence of the water flooding port 26a and cost reduction can be attained.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to a water filtration device for removing impurities such as iron oxide powder from water supplied from a water source such as tap water.

(Technical background of the invention and its problems) Conventionally, for example, in water filtration devices for washing machines,
The main body case is formed into a pressure-resistant airtight container shape, and a cylindrical filtration member is disposed within the main body case, and the inside of the main body case is connected to a water inflow chamber located outside the filtration member and to the inside of the filtration member. In addition, a water inlet section was provided in communication with the water inflow chamber, and a water outlet section was provided in communication with the water outflow chamber. When in use, connect the water inlet to a water source such as tap water.
Water is supplied into the water inflow chamber from the water source, and the water thus supplied is filtered by a filter member to remove impurities such as iron oxide powder, and then flows into the water outflow chamber. Eventually, the water would flow out of the main case from the water outlet.

However, in the conventional configuration described above, since the main body case has a sealed structure, when the filter member becomes clogged and water flow resistance increases, the water supply pressure acts directly on the main body case. Therefore, the main body case must have a pressure-resistant structure, which has the disadvantage of increasing costs.

In order to solve this problem, an overflow port communicating with the atmosphere is provided at a predetermined height of the water inflow chamber, and the water normally stored in the water inflow chamber flows into the water inflow chamber through a filter member using its own water head. To prevent water supply pressure from being applied to the main body case by causing the water in the water inflow chamber to overflow from the overflow port even if the time for replacing the filter member is missed and its water flow resistance increases. is possible.

However, in this case, the water stored in the water inlet chamber passes through the filtration member solely by the water head, so water is supplied from the water source into the water inlet chamber at a flow rate that exceeds the water passing capacity of the filtration member. In this case, even if the filter member is not clogged, water that cannot pass through the filter member overflows from the overflow port, resulting in wasted water. For this reason, users tend to turn off the tap for fear of water overflowing, and as a result, the amount of water supplied to the water inflow chamber is often too small, making it easy to ensure an appropriate outflow flow rate. I'm in a situation where I can't afford it.

[Purpose of the invention]

The present invention has been made in consideration of the above-mentioned circumstances, and therefore, its purpose is to be able to confirm clogging of the filter member and replace it appropriately, and to avoid the need for the main body case to have a pressure-resistant structure. It is an object of the present invention to provide a water filtration device that can reduce costs and also appropriately set the amount of water supplied to a main body case.

[Summary of the invention]

In order to achieve the above object, the present invention provides an overflow port communicating with the atmosphere at a predetermined height portion of the water inflow chamber, and a flow rate display that displays the flow rate of water flowing out from the water outlet provided in the water outflow chamber. It was designed to have a container.

[Embodiments of the invention]

An embodiment in which the present invention is applied to a water filtration device for a washing machine will be described below with reference to the drawings. Reference numeral 1 denotes an outer box of a two-tub type washing machine, and inside this, a washing tub 2 and a dehydration tub 3 are arranged side by side. In the dehydration tank 3, as shown in FIG. 2, a dehydration capacity 4 is provided so as to be rotatably driven by a motor (not shown). A water bottle 5 is installed upright. Reference numeral 6 denotes an inner lid that opens and opens the upper opening of the dehydration tank 3, and a water injector 7 is integrally provided on this by recessing the portion other than the peripheral edge downward. A water inlet 9 is formed on the left side of the end for introducing water into the water injector γ, which is supplied as described later through a water supply pipe 8 disposed inside the outer box 1. A water inlet 10 is formed at the center of the bottom of the water injector 7 in correspondence with the upper end opening of the water sprinkling tube 5, and the water inlet 10 is formed on the upper surface of the bottom to allow water flowing into the injector 7 from the water inlet 9 to flow into the inlet 10.
For example, three guide ribs 11 for guiding to zero are protruded. Reference numeral 12 denotes an outer cover that is placed over the inner cover 6, and a see-through window 13 made of a transparent plate is provided in the center of the outer cover so as to correspond to the water injector 7. Reference numeral 14 denotes an operation box installed at the rear of the upper end of the outer box 1, and a washing timer (not shown) is installed on the front side of the operation box.
In addition to being provided with knobs for operating the dehydration timer 15, etc.
Four storage parts 16 are formed at predetermined positions on the laundry rail 2 side. On the other hand, 17 is the main body case of the filtration device stored in the storage chamber 16, which consists of a container-shaped case main part 18 whose top surface is open and open as shown in FIGS. 3 and 4. It consists of a lid part 20 that is removably attached to the upper opening via a seal member 19. 21 is a cylindrical filter member;
The openings at both ends of the filter member 21 are fitted into a fitting cylinder part 18a formed on the inner bottom of the case main part 18 and a fitting cylinder part 20a formed on the lower surface of the lid part 20, respectively. The inside of the main body case 17 is divided into a water inflow chamber 22 located outside the filter member 21 and a water outflow chamber 23 located inside the filter member 21. 24 is a flat part formed at a predetermined height of the water inflow chamber 22 to protrude rearward (to the right in FIGS. 3 and 4), and includes a water inlet 25 and an overflow port 2 inside.
Downward overflow tube portions 26 6a are arranged side by side on the left and right with an impermeable wall (not shown) in between. As shown in FIG. 3, the water inlet 25 is watertightly fitted into a joint cylinder part 27 provided on the upper surface of the operation box 14 via a seal member 28, and is thereby connected to the joint cylinder part 27. Water supplied through the connecting pipe 29 as described later is transferred from the water inlet 25 to the water inlet chamber 2.
I am trying to make it flow into 2. In addition, the overflow cylinder part 26
As shown in FIG. 4, it is inserted and connected to a power receiving unit 30 provided on the upper surface of the operation box 14, and an overflow pipe 31 whose lower end opening is open into the washing tub 2 is connected to the socket 30. . This allows the overflow port 26a of the main body case 17 to communicate with the atmosphere. Reference numeral 32 denotes a water outlet provided at the bottom of the water outflow chamber 23, and the inside thereof serves as a water outlet 32a. The water pipe 32 is inserted into a socket 33 formed at the bottom of the storage recess 16, and the upper end of the water supply pipe 8 is connected to the socket 33. In addition, 34
is a transparent cap provided on a portion of the lid portion 20 of the main body case 17 located above the overflow opening 26a, and it is possible to see through the inside of the water flow large seedling 22 including the vicinity of the overflow opening 26a through this transparent cap 34. There is. In FIG. 1, 35 is a flow rate indicator provided in the middle of the water supply pipe 8, which is connected to the opening 36 provided in the front part of the operation box 14.
It is visible from the outside through the lens, and its specific configuration will be explained below based on FIG. 5. That is, 3
Reference numeral 7 denotes a measuring chamber in which the middle part of the water supply pipe 8 is enlarged in diameter and both ends are tapered.The peripheral wall of this measuring chamber 37 is made transparent so that the inside of the measuring chamber 37 can be seen through from the outside. It has become. Reference numerals 38 and 39 denote supporting frames fixed to both ends of the measuring chamber 37, respectively, and 40 denotes a movable body housed within the measuring chamber 37, which is formed to have a smaller diameter than the inner diameter of the measuring chamber 37, A groove portion 40a is formed in the outer peripheral portion. The groove portion 40a rotates the movable body 40 when water passes through the groove portion 40a, and maintains a stable display position. The moving body 40 has shafts 40b and 4Qc protruding from both left and right end surfaces thereof, which are inserted into the support frames 38 and 39 so as to be movable in the left and right direction.
9 is constantly biased to the left by a compression coil spring 41 provided between the two. On the outer surface of the flow rate indicator 35 configured in this manner and on the outer surface of the peripheral wall of the metering chamber 37, there is a scale (not shown) for displaying the flow rate, which indicates the horizontal movement distance of the movable body 40 in terms of flow rate. is provided, and in particular, a flow rate corresponding to the water passing capacity of the filter member 21 is displayed.

In FIG. 1, 42 is a hose joint provided on the operation box 14, and a water hose (not shown) is connected to this hose joint 42.

Next, the operation of the above configuration will be explained. After washing operation,
When performing the dewatering and rinsing operation, the water faucet and the hose joint 42 are connected in advance with a hose (not shown). Furthermore, the detergent-washed laundry is stored around the water sprinkling tube 5 in the dehydration tube 4, and the dehydration II 4 is rotated at high speed by the dehydration motor to centrifugally separate the detergent liquid in the laundry appropriately.

After that, open the faucet and pour tap water into the hose and connecting pipe 2.
9 into the water inflow chamber 22 of the main body case 17. Then, the water supplied into the water inflow chamber 22 flows into the water inflow chamber 22.
While being stored in the water head, the water permeates through the filter member 21, where impurities such as iron oxide powder are captured and removed, and then flows into the water outlet 23 and flows out from the inlet/outlet 32a to the water supply pipe 8 side. , further flows through the water supply pipe 8 and eventually reaches the flow rate indicator 35.
reach within. This water flows to the right through the gap between the movable body 40 and the metering chamber 37 while pushing the movable body 40 to the right against the elastic force of the compression coil spring 41 according to the flow rate. At this time, the movable body 40 is moved to the right in approximately proportion to the flow of water flowing out from the water outlet 32a of the water retention chamber 23 due to the upward movement of the water flowing in the water supply pipe 8. The position of the body 40 indicates the flow of water flowing out from the water outlet 32a. As a result, the flow rate of water flowing out from the water outlet 32a of the water outflow chamber 23 can be measured by measuring the position of the movable body 40 through the peripheral wall of the measuring chamber 37 based on a scale for displaying flow rate (not shown). . Therefore, when the flow rate measured by the flow rate indicator 35 is less than a predetermined value, the user can increase the flow rate of water supplied into the water outflow chamber 23 by appropriately turning on the tap of the water faucet, and display the flow rate by the flow rate indicator 35. When the value reaches the predetermined value, let go of the stopper. When the flow rate of water flowing out from the water outlet 32a reaches a predetermined value, the water level in the water inflow chamber 22 is maintained at the normal water level shown by the solid line in FIGS. 3 and 4. Conversely, when the displayed value on the flow rate indicator 35 is less than a predetermined value, the water faucet may be turned off. By adjusting the water tap based on the value displayed on the flow rate indicator 35 in this way, the amount of water supplied to the water stream 23 can be adjusted to an amount commensurate with the water passage capacity of the filtration member 21. Water exceeding the water flow capacity of the member 21 is supplied to the main body case 1.
It is possible to reliably prevent water from being wasted from the overflow port 26a of No. 7, or from being unable to supply the necessary amount of water to the dehydrator 11!4 side. On the other hand, water that has passed through the flow rate indicator 35 flows from the lower end of the water supply pipe 8 into the water inlet 7 through the water inlet 9, and flows down into the water spray tube 5 from the water inlet 10. Then, the water supplied into the water spray barrel 5 is transferred to the water spray barrel 5 by centrifugal force.
It is ejected from the surrounding wall of the laundry, making the surrounding laundry hydrated.

The water contained in the laundry is thus separated by the centrifugal dehydration action caused by the rotation of the dehydrator 14, and the laundry is soaked by such water absorption and centrifugal dehydration action. In this case, even if the tap water discharged from the faucet contains impurities such as iron oxide powder, the impurities will be captured and removed by the filtering action of the filter member 21 as described above. Discoloration of laundry due to dehydration and rinsing is also prevented in local areas.

By the way, when the filter member 21 becomes clogged due to long-term use, the water flow resistance of the filter member 21 becomes large and its water flow capacity decreases. In this case, even if the user opens the water tap as usual, the water flows through the filter member 21 into the outflow chamber 2.
The flow rate of water flowing out from the water outlet 32a of No. 3 is indicated by the flow rate indicator 3.
5 is considered to be less than normal. In this case, the user usually opens the water faucet wider in order to achieve the desired flow rate, but even if the faucet is opened, the flow rate of water flowing out from the water outlet 32a does not increase much, and the water flowing out from the water inflow chamber 22 is concentrated. This results in the water level being raised and water being forced out from the overflow port 26a. Therefore, by visually checking the overflow from the overflow port 26a through the transparent cap 34, or by checking the overflow from the overflow port 26a.
By visually checking the water flowing into the washing tub 2 through the overflow pipe 31, it can be confirmed that the filter member 21 is clogged, and the filter member 21 can be replaced at an appropriate time. Moreover, even if the water level in the water inlet chamber 22 rises abnormally due to clogging of the filter member 21, it will stop at a point slightly beyond the overflow port 26a, so the water supply pressure will not be directly applied to the main body case 17. Therefore, even if the main body case 17 does not have a pressure-resistant structure as in this embodiment, it can sufficiently withstand use.

Note that the present invention is not limited to the above-mentioned embodiments, and for example, the transparent cap 34 of the lid portion 20 of the main body case 17 may not necessarily be provided, and even if this is not provided,
By visually checking the water overflowing into the washing tub 2 from the overflow port 26a, it can be confirmed that the filter member 21 is clogged.

〔Effect of the invention〕

As is clear from the above description, the present invention provides an overflow port communicating with the atmosphere at a predetermined height portion of the water inflow chamber, and a flow rate display that displays the flow rate of water flowing out from the water outlet provided in the water outflow chamber. Since the structure is such that the container is provided, the following effects can be achieved. In other words, since the flow rate indicator can display the flow rate of water flowing out from the water outlet, by adjusting the water tap based on the displayed value, the amount of water supplied to the water inlet chamber can be adjusted to a value commensurate with the water flow capacity of the filtration member. This can prevent an excessive amount of water from being supplied to the water inlet chamber and causing it to wastefully flow out from the overflow port, or conversely prevent an insufficient amount of water from being supplied. Moreover, when the filtration member becomes clogged, even if the water tap is opened wide, the value displayed on the flow rate indicator (therefore, the flow rate of water flowing out from the water outlet) will not reach the predetermined value, and the filtration member will become clogged. It can be confirmed that the filter is clogged, and if this is used as a guideline, the filter member can be replaced at an appropriate time. Furthermore, since the presence of the overflow port prevents an increase in the internal pressure of the water inflow chamber, the main body case constituting the water inflow chamber does not need to have a pressure-resistant structure, and costs can be reduced.

[Brief explanation of the drawing]

The drawings show an embodiment in which the present invention is applied to a water filtration device for washing machines. Figure 3 is an enlarged longitudinal sectional view taken along line ■-■ in Figure 1, Figure 4 is an enlarged longitudinal sectional view taken along line rV-IV in Figure 1, and Figure 5 is an enlarged view of the flow rate indicator. FIG. In the drawings, 17 is a main body case, 21 is a filter member, 22 is a water inflow chamber, 23 is a water outflow chamber, 26a is a water overflow port, 34 is a transparent cap, and 35 is a flow rate indicator. Applicant: Tokyo Shibaura Electric Co., Ltd. Sheath 1 Figure ■ Figure 3 w44 Figure WAS diagram

Claims (1)

[Claims] 1. The interior of the main body case is divided into a water inflow chamber and a water outflow chamber by a filtering member, and an overflow port communicating with the atmosphere is provided at a predetermined height of the water inflow chamber, and a water outlet is provided in the water outflow chamber. A water filtration device characterized by being provided with a flow rate indicator that displays the flow rate of water flowing out of the water filter.