JPS61181496A - Water filtering apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

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 to be supplied to a washing machine, for example.

[Technical background of the invention]

In conventional filtration devices, the inside of the main body case is divided into a water inflow chamber and a water outflow chamber by a filtration member, and after the water supplied into the water inflow chamber is filtered by the filtration member, it is caused to flow out from the water outlet at the bottom of the water inflow chamber. It is composed of In recent years, in order to expand the filtration area and make effective use of the head pressure of the water stored in the water inflow chamber, a filtration member formed in a curved shape is disposed at the bottom of the main body case, and this filtration It has been considered that the lower space of the member is used as a water outflow chamber, and the earthen wall and three side walls of the water outflow chamber are constructed of filtering members.

[Problems with background technology]

By the way, in the above configuration, when the supply of water to the water inflow chamber is started, the water level in the water inflow chamber is gradually increased, the water permeates the filter member, flows into the water outflow chamber, and flows out from the water outlet. become. In this case, the escape port for air in the water outflow chamber is mainly at the water outlet, but since this one outlet is located at the bottom of the water outflow chamber, air that is lighter than water cannot escape from the water outlet. Kuku, the water stays at the top of the outflow chamber and wins. For this reason, when the flow rate of filtered water flowing into the water outflow chamber increases as the stored water level in the water inflow chamber rises, the air stagnant in the upper part of the water outflow chamber passes through the micropores of the filtration member to the water inflow chamber. will be chased out. In this case, when the accumulated air is blown into the stored water in the water inflow chamber, a large number of micro bubbles formed thereby adhere to the surface of the filtration member on the water inflow chamber side, and these bubbles block the micropores of the filtration member. This results in a loose state, which has the disadvantage of deteriorating the water passing performance of the filter member.

[Purpose of the invention]

The present invention has been made in consideration of the above circumstances, and its purpose is to prevent air bubbles from adhering to the surface of a filtration member, and to prevent deterioration of the water permeability of the filtration member due to the air bubbles. To provide a water filtration device that can prevent

[Summary of the invention]

In the present invention, by providing an atmosphere communication pipe whose one end is open at the upper part of the water outflow chamber, the air inside the water outflow chamber can be discharged into the atmosphere through this atmosphere communication pipe.

(Embodiment of the Invention) An embodiment in which the present invention is applied to a two-tub washing machine will be described below with reference to FIGS. 1 to 5. First, in FIG. This is an outer box for a tub-type washing machine. Inside the outer box 1, a washing tank 2 and a dehydration tank 3 are arranged side by side. Reference numeral 4 denotes an operation box installed at the rear of the upper end of the outer box 1. The inclined front part is provided with operation knobs 5, 6 for a washing timer, a dehydration timer (not shown), etc., and a water supply switching lever 7. Reference numeral 8 denotes a water supply device disposed inside the operation box 4. The water supply device 8 connects to a water faucet 10 as a water source via a hose 9.
is connected to. Although not shown, the water supply device 8 is a flow control device that limits the water supply flow rate to a certain amount or less, and includes a valve device that opens and closes the water supply channel. Reference numeral 11 denotes a water supply machine with one end open to the washing tank 2 and the other end opened to the dehydration tank 3.
is provided. On the other hand, the water supply switching lever 7 has a fourth
As shown in the figure, a dynasty tapered water cylinder part 12 is provided, and when the water supply switching lever 7 is operated to the washing tank 2 side (left side) or the dehydration tank 3 side (right side), the water cylinder part 12 changes. The lower end is located on the left or right side of the partition wall 11a, respectively, so that the water supply direction is switched to the washing tank 2 side or the dehydration tank 3 side. 1
The cylindrical receiver 3 formed on the back surface of the operation box 4 is a mouth part, one end of which protrudes rearward, and the other end is bent downward to correspond to the opening on the upper surface of the water receiver cylinder part 12. As a result, the mouth part 13 of the receiver is selectively communicated with the washing tank 2 or the dehydration tank 3 through the water receiver cylinder part 12 and the water supply device 11. On the other hand, in FIG. 5, reference numeral 14 denotes a mouth portion of a cylindrical auxiliary receiver formed on the back surface of the operation box 4, one end of which protrudes rearward, and the other end bent downward into the dehydration tank 3. It's open. Reference numeral 15 denotes a filtration device attached to the rear surface of the operation box 4 by screwing, for example, and will be described in detail below. Reference numeral 16 denotes a main body case of the filter device 15, and a lid 17 is provided on the upper surface of the main body case.
is provided so that it can be rotated to open and close. This main case 16
As shown in FIG.
The water supply port 8a is connected to the water supply port 8a. In addition, the main case 1
A water outlet part 20 is formed at the bottom of the water outlet part 6.
0 is connected to the mouth part 13. On the other hand, in FIG. 5, reference numeral 21 denotes an overflow discharge port formed on the front surface of the main body case 16 so as to protrude forward;
Overflow channel 2 formed to extend vertically inside the front part of
1a, and the upper ends of the overflow channels 2 and 1a are opened upward in the upper part of the main body case 16. The overflow discharge port 21 is inserted and connected to the opening 14 of the auxiliary receiver. Reference numeral 22 denotes a filter body removably disposed within the main body case 16, and its configuration will be described below. Reference numeral 23 denotes a filtering member, which, as shown in FIGS. 1 and 2, has a curved shape with both front and rear ends facing downward and a central portion concave downward. The bottom and both sides of the filter member 23 are closed by a holding member 24, and an outlet 25 formed at the bottom of the holding member 24 is inserted and connected to the water outlet 20 of the main case 16. By arranging the filtering member 23 inside the main body case 16 in this manner, the inside of the main body case 16 is divided into an upper and lower water inflow chamber 26 connected to the water inlet section 18 and a water outflow chamber 27 connected to the water outlet section 20. ing.

Reference numeral 28 denotes an atmosphere communication pipe, one upper end of which is open above the water outflow chamber 27, and the other lower end connected to a connecting pipe 29 formed on the inner circumference of the outflow port 25. It is connected. Through this connecting pipe part 29, the lower end of the atmospheric communication pipe 28 is opened into the water outlet part 20 which is a flow path for water (filtered water) flowing out from the water outflow chamber 27, and as shown in FIG. The lower end opening of 13 communicates with the atmosphere.

Incidentally, the flow path of the filtered water is the water outlet section 20. The receiver is mouth part 1
3. It is composed of a water receiver 12 and a water supply device 11.

Further, as shown in FIG. 2, a pair of handle members 30 are detachably provided on both sides of the filter body 22, and the handle members 30 are detachably provided on both sides of the filter body 22.
A pair of presser parts 31 whose upper ends protrude from the lower surface of the lid 17
The filter body 22 is in contact with or approximately in contact with the filter body 22, thereby ensuring that the filter body 22 is installed in the correct position.

Next, the operation of the above configuration will be explained. When performing a washing operation or a dewatering and rinsing operation, first, the water supply switching lever 7 is operated to switch according to the operation, and the tap of the water faucet 10 is opened. When either the wash timer or dehydration timer operation knobs 5 and 6 are operated, the water supply device 8 is opened, and tap water is regulated at a substantially constant flow rate through the water supply device 8 from the water inlet portion 18. The water flows into the water inflow chamber 26 inside the main body case 16. This tap water is supplied to the water inflow chamber 26.
While being stored in the water head, the water passes through the filter member 23 and flows into the water outflow chamber 27, and in this process, impurities such as iron oxide powder are captured and removed. The water flowing into the water outflow chamber 27 flows out from the outflow port 25 through the water outflow port 20 to the water receiving cylinder 12 side, and is supplied to the washing tank 2 or the dehydration tank 3 through the water supply device 11. During such water filtration, the stored water level in the water inflow chamber 26 rises as time passes after the start of water supply, and at the same time, the flow rate of the filtered water flowing into the water outflow chamber 27 gradually increases. As a result, part of the air in the water outflow chamber 27 is discharged from the outflow port 25 together with the filtered water, but the remaining air remains in the upper part of the water outflow chamber 27. However, in this case, since the upper end of the atmosphere communication pipe 28 is open above the water outflow chamber 27, the water outflow chamber 27
In response to an increase in the inflow flow rate of filtered water into the water outflow chamber 27
The air stagnant inside can be discharged to the atmosphere from the water flow path through the atmosphere communication pipe 28. This can prevent the accumulated air from being blown into the stored water in the water inflow chamber 26 through the fine holes of the filter member 23 due to an increase in the inflow flow rate of the filtered water. It is possible to prevent a state in which a large number of minute bubbles containing the accumulated air are attached, and it is possible to prevent deterioration of the water passing performance of the filter member 23 due to the bubbles. Therefore, the water stored in the water inflow chamber 26 passes through the filter member 23 well from the beginning, and when the water is molded after the start of water supply, the water level in the main body case 16 is reduced to the normal water level L (overflow flow) shown in FIGS. 4 and 5. Road 21a
(below the top of ), it remains approximately constant and does not rise any further.

In this embodiment, since the lower end, which is the other end of the atmosphere communication pipe 28, is opened into the water outlet section 20, which is a flow path for filtered water, the following additional effects can be obtained. That is, the flow of filtered water in the water outlet section 20 causes a slight negative pressure on the lower end side of the atmosphere communication pipe 28, which causes the air stagnant in the water outflow chamber 27 to be sucked into the atmosphere communication pipe 28. Blowing of accumulated air into the water stored in the water inflow chamber 26 can be more reliably prevented.

Moreover, even if the filtered water flows into the atmosphere communication pipe 28, this filtered water can be made to flow into the water outlet 2o, and the filtered water that has flowed into the atmosphere communication pipe 28 will not be wasted. . The above incidental effects can be obtained in the same way even if the other end (lower end) of the atmosphere communication pipe is opened to a water flow path other than the water outlet 20, such as the water receiver 12 or the water supply device 11. can.

However, the present invention does not necessarily require that the other end of the atmosphere communication pipe be opened into the flow path of the filtered water. It can be achieved.

In addition, in the case where there is a depression in the upper part of the filter member 23 and the upper part of the water outflow chamber 27 is divided as in this embodiment, the upper part of the atmosphere communication pipe 32 is cut off as shown in FIG. It is also possible to have a structure in which the upper ends of each branch are opened at the upper part of the water outflow chamber 27.

〔Effect of the invention〕

As is clear from the above description, the present invention allows the air accumulated in the upper part of the water inflow chamber to be discharged to the atmosphere through the atmosphere communication pipe, thereby preventing air bubbles from adhering to the surface of the filtration member on the water inflow chamber side. This has the excellent effect of preventing deterioration of the water permeability of the filtration member caused by these air bubbles.

[Brief explanation of drawings]

1 to 5 show an embodiment of the present invention,
Figure 1 is an enlarged vertical side view of the main parts, Figure 2 is a vertical front view of the filtration device, Figure 3 is a perspective view of the upper part of the washer, and Figures 4 and 5 are the installation states of the filtration device. FIG. 6 is an enlarged vertical side view of a main part showing an embodiment of the present invention. In the drawing, 11 is a water supply gutter (water flow path), and 12 is a water receiver (
16 is a main body case, 20 is a water outlet (water flow path), 23 is a filtering member, 26 is a water inflow chamber, 27 is a water outflow chamber, and 28 and 32 are atmospheric communication pipes. Applicant Osamu Toshiba Co., Ltd. 1 Figure 2 Figure jp+3 Figure 4 Figure 5 Figure 6

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 filtration member, and water that flows into the water inflow chamber and is filtered by the filtration member flows out from the water outflow chamber. 2. A water filtration device according to claim 1, further comprising an atmosphere communication pipe having one end opened above the water outflow chamber. 2. The water filtration device according to claim 1, wherein the other end of the atmosphere communication pipe is opened into a flow path of water flowing out from the water outflow chamber.