JPS60197215A - Water filtering apparatus - Google Patents

Abstract

PURPOSE:To attain the reduction in cost and, at the same time, to improve users' convenience, by providing a water flooding port communicated with the open air to the water inflow chamber in a main body case and providing a flow control apparatus for supplying water into the aforementioned chamber. CONSTITUTION:The interior of a main body case 19 is divided by a filter member 13 so as to form a water inflow chamber 24 and a water outflow chamber 25 positioned outside and inside the filter member 23 and the water flooding port 28a of the main body case 9 is allowed to communicate with the open air. Further, a flow control apparatus 40 controlling the flow amount of water supplied into the water inflow chamber 24 to a definite amount is internally contacted with the water inlet port 37a of a water supply valve 7. As a result, the clogging state of the filter member 23 is found by visually confirming water flooded from the water flooding port 28a when the filter member 23 is brought to a clogging state and, therefore, it is unnecessary to form the main body case 19 into a pressure resistant structure and the reduction in cost can be attained. Further, because the flow amount of water supplied into the water inflow chamber 24 is regulated to a definite one by the flow control apparatus 40, users' convenience is improved.

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 filter 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 filter member/material. It was divided into a water outflow chamber located inside the water outflow chamber, and further provided with a water inlet section communicating with the water inflow chamber, and a water outlet section communicating with the water outflow chamber. When in use, the water inlet is connected to a water source such as a tap, and water is supplied from that source into the water inlet chamber. Water from which impurities such as powder have been removed flows into the water outflow chamber and finally flows 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 is caused to flow into the water inflow chamber through a filter member using its own water head. In addition, even if the time to replace the filter member is missed and its water flow resistance increases, the idea is to configure the system so that water supply pressure is not applied to the main body case by causing the water in the water inflow chamber to overflow from the overflow port. It will be done.

However, in this case, the water stored in the water inflow chamber passes through the filtration member exclusively by the water head, so water is supplied from the water source into the water inflow chamber at a flow rate that exceeds the filtration performance of the filtration member. In such cases, 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. Therefore, the user must adjust the opening of the water tap each time the water tap is used to prevent water from overflowing from the overflow port, which results in a disadvantage that the system is not easy to use.

[Purpose of the invention]

The present invention has been made in consideration of the above 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 improve usability.

[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 a water inflow chamber, and adjusts the flow rate of water supplied into the water inflow chamber from a water source such as a tap to a constant amount. The structure is such that a flow rate adjustment device is provided.

[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. ! 4 is rotatably provided by a motor (not shown), and this dehydration II! A water spray tube 5 made of a water-permeable porous material is erected at the center of the inner bottom of the tube. Reference numeral 6 denotes an inner cover that opens and closes the top 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 in one side for introducing water into the water injector 7, which is supplied as described later through a water supply gutter 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 cylinder 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 are provided to guide the guide. Furthermore, at the rear end of the water injector 7, there is a stepped section 1 for displaying the flow rate.
2.13 is formed. Reference numeral 14 denotes an outer cover that is placed over the inner cover 6, and a see-through window 15 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 16 denotes an operation box installed upright at the rear of the upper end of the outer box 1, and the front part of this box is provided with knobs for operating a washing timer (not shown), a dehydration timer 17, etc., and a washing tub. A storage recess 18 is formed at a predetermined location on the second side. On the other hand, 19 is the main body case of the filtration device housed in the storage recess 18, which is the third case.
As shown in the drawings and FIG. 4, the case consists of a container-shaped main part 20 with an open upper surface and a lid part 22 removably attached to the upper opening via a sealing member 21. Reference numeral 23 denotes a cylindrical filter member, and the openings at both ends thereof are connected to the main part 2 of the case.
0 and a fitting cylinder part 22a formed on the bottom surface of the lid part 22, respectively.
The filter member 23 divides the inside of the main body case 19 into a water inflow chamber 24 located outside the filter member 23 and a water outflow chamber 25 located inside the filter member 23. Reference numeral 26 denotes a flat portion formed at a predetermined height of the water inlet chamber 24 to protrude rearward (to the right in FIGS. 3 and 4).
7 and a downward overflow tube part 28 with an overflow port 28a inside.
are placed side by side on the left and right with water-blocking walls (not shown) in between. As shown in FIG. 3, the water inlet 27 is watertightly fitted into the joint cylinder part 29 provided on the upper surface of the operation box 16 via the seal member 30, and is thereby connected to the joint cylinder part 29. Water supplied through the connecting pipe 31 as will be described later is made to flow into the water inlet chamber 24 from the water inlet 27. In addition, the overflow tube portion 28 is connected to the operation box 16 as shown in FIG.
An overflow pipe 33 whose lower end opening is open to the washing tub 2 is connected to the socket 32. As a result, the main body case 19
The overflow port 28a is communicated with the atmosphere.

Reference numeral 34 denotes a water outlet provided at the bottom of the water outflow chamber 25, and the inside thereof serves as a water outlet 34a. The water pipe 34 is inserted into a socket 35 formed at the bottom of the storage recess 18 of the operation box 16, and the upper end of the water supply device 8 described above is connected to the socket 35. In addition, 36 is a transparent cap provided in a portion of the lid portion 22 of the main body case 19 located above the overflow port 28a.
Through this, the interior of the water inlet chamber 24 including the vicinity of the overflow port 28a can be seen through. In FIG. 1, 37 is a water supply valve provided in the operation box 16, and its water inlet 37a is connected to a water faucet 39, which is a water source, by a bow 38, and its water outlet 37b is connected to a water supply faucet 39, which is a water source. is connected to the above-mentioned connecting pipe 31, and has a flow rate regulating device 40 inscribed in its water inlet portion 37a for regulating the flow of water supplied into the water inlet chamber 24 of the filtration device to a constant amount. . The specific configuration of this flow rate adjustment device 40 is shown in FIGS. 5 and 6.
As shown in the figure. Here, 41 is a water passage case housed in the water inlet portion 37a of the water supply valve 37, and 42 is a water passage case 4.
An annular seat 43 made of, for example, soft rubber is housed in the annular seat 1, and 43 is a throttle valve body that is housed in an overlapping state with the annular seat 42.
The throttle valve body 43 is formed with a water passage port 43a having a substantially medium temperature, and a large number of water passage grooves 43b are formed on the end face on the annular seat 42 side.

With this, when the water pressure of the water supply increases, the throttle valve body 43 is displaced so as to sink into the annular seat 42, so the flow passage cross-sectional area of the water passage groove 43b is reduced, and the water flow rate is approximately reduced regardless of the magnitude of the water pressure. It is something that is constantly adjusted.

Next, the operation of the above configuration will be explained. When performing a dehydration rinsing operation after the washing operation, the water faucet 39 is opened in advance. At the same time, the laundry after washing with detergent is stored around the water sprinkling tube 5 in the dehydration tube 4, the inner lid 6 and the outer lid 14 are covered, and the dehydration timer 17 is operated to perform dehydration (not shown). A motor rotates the dehydrator 114 at high speed to centrifugally separate the detergent liquid in the laundry. When a predetermined period of time has elapsed to start dewatering, the dewatering cylinder 4 is driven intermittently and the water supply valve 37 is energized and opened, whereby the tap water that has flowed into the water inlet 37a is maintained at a substantially constant flow rate by the flow adjustment device 40. The water is further supplied into the water inlet chamber 24 of the main body case 19 from the water outlet portion 37b through the connecting pipe 31. Therefore,
As long as the user opens the faucet 39 to a certain extent, a constant flow of water will always be supplied to the water inflow chamber 24 regardless of the degree of opening. There is no need to adjust the opening of the stopper. The water supplied into the water inflow chamber 24 is stored in the water flow large seedling 24 and permeates through the filtering member 23 due to its water head, where impurities such as iron oxide powder are captured and removed before entering the water outflow chamber 25. and flows down into the water supply machine 8 through the water outlet 34a. By the way, immediately after the water supply starts, the water level in the water inflow chamber 24 is low and the water head is small, so the flow rate of water passing through the wj131!1 member 23 is smaller than the water supply m into the water inflow chamber 24,
As a result, the water level in the water inflow chamber 24 gradually rises,
Accordingly, the air in the water outflow chamber 24 is discharged to the outside of the main body case 19 through the water overflow port 28a, so that the main body case 19
The internal pressure inside 9 will not increase. After a while, the flow rate of water supplied into the water inflow chamber 24 and the flow rate of the water passing through the filter member 23 become equal, and from this point on, the water level in the water inflow chamber 24 is indicated by the solid line in FIGS. 3 and 4. Normally maintained at water level. As described above, a substantially constant flow of water is always supplied to the water stream large seedlings 24 regardless of the degree of opening of the faucet 39, so that the water level will increase even if the filter member 23 is clogged. Except for this, the opening degree of the faucet 39 remains substantially constant regardless of the degree of opening of the faucet 39. Therefore, if the filter member 23 is not clogged, even if the faucet 39 is fully opened, the water level will not rise, and water will not overflow from the overflow port 28a.

On the other hand, the water filtered by the filter member 23 and flowing down from the water outlet 34a into the water supply machine 8 is water supply tit! 18 flows down from its lower end into the water injector 7 through the water inlet 9, and flows down into the water spray cylinder 5 from the water inlet 10.

The water thus supplied into the water spray barrel 5 is ejected from the peripheral wall of the water spray barrel 5 by centrifugal force, making the surrounding laundry hydrated. The water contained in the laundry is thus separated by the centrifugal dehydration effect caused by the rotation of the dewatering cylinder 4, and the laundry is dehydrated by such water absorption and the centrifugal dehydration effect.

In this case, even if the tap water discharged from the faucet 39 contains impurities such as iron oxide powder, the impurities are captured and removed by the filtering action of the filter member 23 as described above. Even in poor areas, discoloration of laundry due to dehydration and rinsing is prevented.

By the way, if the filter member 23 becomes clogged due to long-term use, the water flow resistance of the filter member 23 increases, but a constant flow rate of water is always supplied into the water inlet chamber 24 due to the action of the flow rate adjustment device 40. The water level in the water inflow chamber 24 will rise further beyond the normal water level. However, the overflow port 28 whose water level is located at a predetermined height portion of the water inflow chamber 24
If the water tries to rise above the water point 28a, the water will flow into the overflow port 28a.
Since the water overflows from the overflow pipe 33 and flows into the washing tub 2, the user can visually check the water overflowing from the overflow pipe 33 into the washing tub 2 to determine if the filter member 23 is clogged. If you use this as a guide, you can replace the filter member 23 at an appropriate time. Moreover, even if the water level in the water inflow chamber 24 rises abnormally due to clogging of the filter member 23, it stops at a point slightly beyond the water overflow port 28a, so that the water supply pressure is reduced to the main body case 19.
Therefore, even if the main body case 19 does not have a pressure-resistant structure as in this embodiment, it can sufficiently withstand use. In addition, in this embodiment, since the transparent cap 36 is provided on the lid part 22 of the main body case 19,
Through the transparent cap 36, the user can visually check the level of water level in the water inflow chamber 24 and the presence or absence of water overflowing from the overflow port 28a, and from this also can determine when it is time to replace the filter and overflow port 23. is possible. Furthermore, in this embodiment, since the water injector 7 is provided with flow rate display steps 12, 13, the water level in the water injector 7 can be measured visually based on the flow rate display steps 12, 13. The flow rate of water flowing into the vessel 7 and the flow rate of water flowing out from the water outflow chamber 25 can be confirmed. Therefore, the degree of clogging of the filter member 23 can also be known by visually measuring the water level in the water injector 7.

Note that the present invention is not limited to the above-mentioned embodiment, and for example, the transparent cap 36 of the lid part 22 and the flow rate display step part 12.13 of the water injector 7 may not necessarily be provided, and even if these are not provided. By visually checking the water overflowing into the washing tub 2 from the overflow port 28a, it can be confirmed that the filter member 23 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 a water inflow chamber, and adjusts the flow rate of water supplied into the water inflow chamber from a water source such as a tap to a constant amount. Since the configuration is such that a flow rate adjustment device is provided, the following effects can be achieved. In other words, a constant flow of water is always supplied into the water inlet chamber by the flow rate adjustment action of the flow rate regulator, so if the filter member becomes clogged, the water level in the water inlet chamber will rise and the water will flow out. As a result, by visually checking the overflowing water, you can tell that the filter member is clogged, and if you use this as a guide, you can replace the filter member at an appropriate time. can. 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. Furthermore,
The water supplied into the water inflow chamber is regulated at a constant flow rate by a flow rate adjustment device, so there is no need for troublesome operations such as adjusting the opening of the water tap each time to adjust the water supply flow rate to the appropriate meter, making it easy to use. It has a good effect.・

[Brief explanation of the drawing]

The drawings show an embodiment in which the present invention is applied to a water filtration device for a washing machine. Fig. 1 is a partial perspective view of the washer N machine, Fig. 2 is a vertical cross-sectional side view of the upper part of the dehydration tank, and Fig. Figure 3 is part of Figure 1 -
■Enlarged vertical cross-sectional view not shown along the line, Figure 4 is IV in Figure 1
FIG. 5 is an enlarged longitudinal sectional view taken along line -IV, FIG. 5 is an enlarged longitudinal sectional view of the flow adjustment device, and FIG. 6 is an exploded perspective view of the main parts thereof. In the drawings, 19 is a main body case, 23 is a filter member, 24 is a water inflow chamber, 25 is a water outflow chamber, 28a is a water overflow port, 36 is a transparent cap, and 40 is a flow rate adjustment device. Applicant Tokyo Shibaura Electric Co., Ltd. No. 1 Port No. 3 Figure 2 Figure 4 Click here

Claims (1)

[Claims] 1. The inside 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 source such as a tap water enters the water inflow chamber. 1. A water filtration device comprising a flow rate adjustment device that adjusts the flow rate of supplied water to a substantially constant amount.