JPS6128789A - Water supply device for water tap - Google Patents

Abstract

PURPOSE:To compensate shortage of the water supply pressure by forming a suction line and a discharge line of the water supply device from a flexible tubing, and by providing the suction line with a joint having a service port which is open in the neighborhood of water tap. CONSTITUTION:A motor-driven pump is incorporated in the body 22 of a water supply device 20 of water tap direct-coupling type, which includes a connection part 32 directly coupled to the tip 14 of water tap 12, a suction line 40 made of a flexible tubing connecting this connection part to the body 22, and a discharge line 42. The connection part 32 is pulled up to the water tap side, and sealing between the water tap 12 and the upper opening 38 is retained by compression of a seal 36. Thus shortage of the water supply pressure can be solved by the assist action of the motor-driven pump.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to the improvement of water supply equipment, and particularly to a water supply device for faucets to compensate for a lack of water pressure at the end faucet of a water supply system. It is something.

[Background of the invention]

Figure 6 shows an example of residential water supply equipment, especially found in Middle Eastern countries. In which market.

Because the rapid expansion of housing construction into the suburbs is outpacing the installation of municipal water supplies, water supply equipment like the one shown in Figure 6 is being installed in ordinary houses. A water storage tank 2 is provided in the basement of the second- and third-story houses, and water supplied from a water tank 6 of a water truck 4 is stored therein.

The water in the water tank 2 is stored in a water tank 10 installed on the roof by a pump 8 installed outdoors (for example, JIS B 83181i' electric well pump for shallow wells, 0), and is distributed to each floor using a gravity flow method. Water is being sent to. However, in such equipment, as is often explained by citing Pascal's principle, the water head difference between the water tank 10 and the faucet 12 is large, especially on floors near the rooftop (such as 3N above ground in Figure 6). 71%, and the water supply pressure at the faucet 12 tends to be insufficient.

In particular, when the faucet 12 is far from the aquarium 10 or when a large number of faucets 12 are installed, the water a tends to become scarce due to an increase in pipe resistance. Therefore, many people find it difficult to use equipment that requires a certain level of high water supply pressure for smooth operation, such as gas water heaters and fully automatic washing machines. We received requests from these markets to develop water supply pressure compensation equipment.

Therefore, the inventors proposed increasing the height of the rooftop aquarium 10 (for example, installing it approximately 10 meters above the rooftop), but ``we received feedback that the equipment cost would be high.'' We also proposed installing a large pump (such as the aforementioned electric well pump for shallow wells) on the rooftop. but,
Particularly in the Middle East market, due to frequent sandstorms, sand can get inside the electric motor and cause it to lock up, and direct sunlight can cause a significant temperature rise, making it unreliable for water supply equipment that supplies domestic water. However, it did not meet market demands from a gender perspective.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a highly reliable water supply device that solves the drawback of the insufficient water supply pressure from the faucet of the conventional water supply equipment described above.

[Summary of the invention]

The present invention is characterized by comprising an impeller driven by an electric motor, a suction passage provided on the suction side of the impeller, and a discharge passage provided on the discharge side of the impeller, and the suction passage and the discharge passage can be connected to each other. A joint formed of a cylindrical pipe and having a connection part between the suction passage, the discharge passage and the faucet, and a water supply port opening in the vicinity of the faucet, The water supply device for a faucet is characterized in that the water supply ports are communicated with each other, and the joint is connected to a faucet.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a sketch of a water supply device 20 that is directly connected to a faucet.
An electric pump, which will be described later, is built into the main body 22.

A power cord 24 is drawn out from the top surface of the main body 22 and connected to a power source 30 via a voltage regulator 28 such as a voltage drop transformer having a built-in manual on/off switch 26 . This voltage regulator 28 has a high supply voltage (e.g. 1
00V, 220V, etc.) to low voltage (e.g. 14V)
etc.) and supplies electricity to the electric pump via the switch 26, which prevents electric shock accidents due to a drop in electrical insulation and ensures safety.

The main body 22 is fixed to the faucet 12 with a support 31 and has a connecting portion 32 directly connected to the tip 14 of the faucet 12.
, a suction passage 40 and a discharge passage 42 that connect the connecting portion 32 and the main body 22.

These suction passage 40 and discharge passage 42 are formed of flexible pipes such as synthetic resin hoses.

FIG. 2 shows a cross section of the connecting portion 32. As shown in FIG. An annular sealing body 36 made of one elastic member is sealed to the upper part of the connecting part 32, and the lower surface of the tip 14 of the water faucet 12 abuts on the upper surface. The interior of the connecting portion 32 is divided into two parts, upper and lower, by a partition wall 41, and a suction passage 40 and a discharge passage 42 are connected to each other.

One end of the suction passage 40 communicates with the water faucet 12 via the upper opening 38 of the connecting portion 32 . A flanged cylindrical body 48 is fixed to the tip 14 of the faucet 12 by a set screw 46. Further, a male thread 44 is formed on the outer periphery of the connecting portion 32, and a female thread 52 of a nut 50 is screwed into this male thread 44. The female screw 52 is screwed into the upper end of the nut 50. An eaves portion 54 having a smaller diameter than the female thread 52 is provided at the upper end of the nut 50.
This eaves portion 54 engages with a flange portion 56 of the cylindrical body 48 . Here, when the nut 50 is tightened, the connecting portion 32 is pulled up toward the faucet 12, the sealing body 36 is compressed, and a seal is maintained between the faucet 12 and the upper opening 38.

On the other hand, the discharge passage 42 opens downward directly below the water faucet 12.

FIG. 3 shows a cross section taken along line III--III in FIG. 2.

A rectifying motor 60 is built into the main body 22 of the water supply device 20, and an impeller 64 is press-fitted into the lower end of a rotating shaft 62 that hangs downward. The electric motor 60 is essentially covered with an inner cylinder 66 and an inner cover 68, each having a cylindrical shape with a bottom. The inner cylinder 6
An annular backing 70 is sandwiched between the inner cover 68 and the inner cover 68 to maintain watertightness. A recess 6 is provided on the lower surface of the inner cylinder 66.
7 is formed, and a shaft sealing device 72 (for example, a mechanical seal specified in JIS B2405) is installed between this recess 67 and the rotating shaft 62, and the electric motor 60
Prevents water from entering inside. An outer cylinder 76 with a bottom is placed on the outside of the inner cylinder 66 , and the lower surface of the outer cylinder 76 is brought into contact with the edge 80 of the case 34 via an annular backing 78 . An annular nut 82 is screwed into a male threaded portion formed on the outer periphery. Further, between the upper surface of the inner lid 68 and the ceiling surface of the outer cylinder 76.

An annular backing 84 made of an elastic body is held in a watertight manner.

An elastic body 86 is attached to the periphery of the power cord 24 passing through the inner cover 68, and a cap 88 is placed over the power cord 24 to keep the outlet portion of the power cord 24 watertight.

Inside the annular chamber 90 formed around the inner cylinder 66,
A cylindrical body 92 is attached and a discharge inner passage 94 is provided vertically.

Above this cylindrical body 92, a rib-shaped projection 95 is formed on the inner surface of the outer cylinder 76, and this protrusion 95 prevents the cylindrical shape 92 from being pulled upward and rectifies the discharged water.
2. Perform vibration prevention.

As shown in the figure, the suction lower 4 of the impeller 64 communicates with the suction passage 4o, and the water faucet 12 through the suction passage 40.
It will be communicated to.

The internal discharge passage 94 that opens at the upper part of the chamber 90 communicates with the discharge passage 42 at the bottom. Furthermore, the faucet 1
2, the discharge passage 42 communicates with a water supply port 96 that opens downward.

Furthermore, a communication port 98 that opens into the chamber 90 is provided in the middle of the discharge inner path 94 . The position of the communication port 98 is lower than the upper end of the discharge inner passage 94 and is provided above the impeller 64. Further, part or all of the electric motor 60 may be provided below the communication port 98.

A spiral chamber 102 is formed around the impeller 64 and communicates with the chamber 90 from a single spiral chamber outlet 104. The chamber 90 is provided outside the entire circumference of the inner cylinder 66.

Next, the action and effect will be explained. In FIG. 3, when the faucet 12 is first opened, tap water flows into the upper opening 38 of the connection part 32.
Flows into the suction passage 40 from the suction passage 4
0, the impeller 64 and the swirl chamber 102 are filled.

Next, water also flows into the chamber 90, but since the cylindrical body 92 is provided with a communication port 98, some of the water flows down into the discharge passage 42 through the communication port 98 before the chamber 9o is filled with water. The water then flows out from the water supply port 96 below. Therefore, when the tap water pressure is low, it takes a considerable amount of time to fill the entire chamber 90 with water up to the height of the upper end opening of the discharge inner passage 94, but the minimum amount of water necessary for pump operation is In other words, the water level up to about the height of the communication port 98 can be secured in a short period of time only by natural flow from the faucet 12. Furthermore, it can be easily confirmed that the required amount of water has been secured by the fact that water flows out from the communication port 98 to the water supply port. Therefore, problems such as dry operation without water in the impeller 64 can be avoided.

Here, the position of the communication port 98 may be appropriately selected according to the height of the faucet 12 (dotted chain line B) in FIG. If the height is lower than the one-dot chain line B), it will take less time to secure the amount of water necessary for operation. Further, the upper end (inflow port) of the communication port 98 or the discharge port inner path 94 is connected to the spiral chamber 1.
If it is set higher than o2, the amount of water required for pumping operation can be secured.

Next, when the switch 26 is turned on, the impeller 64 is rotated by the drive of the electric motor 6°, and water pumping action is started. Then, tap water is forcibly sucked through the faucet 12 and the impeller 64
is given energy and discharged into the vortex chamber 102, at the same time a pressure increasing action is performed. The inflowing pressurized water is in room 9o.
The water rises within the interior, descends through the internal discharge passage 94, passes through the discharge passage 42, and is supplied as high-pressure water from the water supply port 94. Therefore,
Even when tap water pressure is not sufficient, high-pressure water can be obtained by operating the water supply device 20, and the water pressure compensating device can be used to solve the water pressure shortage of the conventional equipment.

During pumping operation, the electric motor 6o is cooled by pumping water through the inner cylinder 66, so parts such as the inner cylinder 66 do not reach high temperatures, and each part can be easily made of synthetic resin. Ru. Therefore, it is possible to improve the corrosion resistance and reduce the weight of the water supply device 2゜.
This provides practical effects in ensuring workability and long-term sealing performance when directly attached to the faucet 12, and in particular ensuring reliability in corrosion resistance as a device for use with tap water containing chlorine.

In addition, even if air gets mixed into the pumped water due to poor sealing of the piping, or if air remains in the suction passage 40, the air will not get mixed into the discharged water due to the self-priming operation due to water accumulation in the chamber 90. Since the fuel is discharged at the same time, there is no need for long periods of dry operation. Furthermore, since the interior of the chamber 90 is filled with water during operation, this water has the effect of shielding the operating sound of the electric motor 60, resulting in quiet operation.

Furthermore, if the water in the water tank 10 runs out, the faucet 12
The water supply device 20 is in an idle state without being supplied with water, but in this case, water in the chamber 90 above the communication port 98 flows out from the communication port 98 into the discharge inner passage 94. , the water level drops to position A in Figure 3. Therefore, the operating sound of the electric motor 60 is transmitted from the chamber 90 through the outer cylinder 76 to the outside of the water supply device 20, or passes from the empty discharge inner passage 94 to the discharge passage 42, and leaks to the outside from the water supply port 96. Therefore, the user can easily know that the machine is running idle.

Note that even if this state continues for a while, the water remaining in the chamber 90 cools the electric motor 60, so that problems such as burning out of the electric motor 60 in a short period of time can be prevented.

In addition, if foreign matter such as wood chips gets into the water tank 10 and flows into the water supply device 20 along with the pumped water, and even if the upper end entrance of the discharge inner passage 94 is blocked, a small amount of water will leak from the communication port 98, so that the shut-off operation is not possible. Therefore, abnormal rises in temperature and pressure within the water supply device 20 can be prevented.

Furthermore, since it is directly connected to the faucet 12, space can be used effectively even in a small kitchen. In particular, since it can be installed indoors, problems caused by strong direct sunlight and sandstorms, which are concerns when installed outdoors, as mentioned in the description of the prior art, can be prevented.

Further, the voltage supplied to the water supply device 20 is controlled by the voltage regulator 2
8, so even if electrical insulation deteriorates, safety is maintained. It can be used as an extremely reliable electrical device, especially for use in places with a lot of water or humidity, such as kitchens and bathtubs.

In addition, if this water supply device N20 is not used for a long period of time, if the connection portion 32 is removed, the water supply device 20 can be
Since the remaining water inside and in the faucet 12 can be drained, there are no sanitary problems such as spoilage of the water inside.

In addition, by providing the water supply port 96 directly below the faucet 20, water is supplied as if high-pressure water flows directly from the faucet 20, which is not only convenient for cooking, but also convenient for the faucet 20. 20 There is no need to change surrounding equipment (for example, make the sink larger).

Furthermore, the main body 22 of the water supply device is
Since most of the faucet is located above, the space around the faucet (especially the space below) required for installing the water supply device can also be reduced. In addition, it is generally not possible to separate the sink (or the surface of the water stored in the sink), which is installed close to the bottom of the faucet 20, from the main body 22 (live parts and components such as the electric motor 60) of the water supply device 20. This has a significant effect on ensuring safety.

Further, since the main body 22 is supported by the faucet 12 and no extra load is applied to the connecting portion 32, good sealing performance is maintained.

In addition, the faucet 12 may be a flexible faucet (with a tip portion 14 that moves horizontally).
For example, even in the case of a "universal faucet" specified in JIS, B2061 water supply sensor, etc., the suction passage 40 and the discharge passage 42 are formed of flexible columnar pipes, so the tip 14 of the faucet 12
The movement of the water supply device 20 is not limited to the position of the main body 22;
There is no backing that impairs the supporting state of the connector or the sealing performance of the connecting portion 32.

Next, FIG. 4 shows a water supply device 1 showing another embodiment of the present invention.
18, and parts having functions equivalent to those of the above embodiment will be described using the above numbers.

The rotating shaft 62 of the electric motor 60 has a plurality of vortex chambers 120 on its side.
An impeller 64 having a shape formed therein is attached. A casing 122 and a casing cover 1 surrounding this impeller 64
On the inner surface of 24, there is a vortex water channel 1 facing the vortex chamber 120.
26 are provided. Further, a sealing body 128 is sandwiched between the casing 122 and the casing cover 124, and is tightened with bolts 130 to maintain sealing performance. Further, a shaft sealing device 72 is provided between the casing 122 and the rotating shaft 62. These components are surrounded by a base 132 and a protective cover 134.

As shown in FIG. 5, which shows the v-■ cross section of FIG. 4, a suction joint 140 is attached to the suction port 136 of the swirl water channel 126, and a discharge joint 142 is attached to the discharge passage 138, respectively. The suction passage 40 is connected to the suction joint 140, and the discharge passage 42 is connected to the discharge joint 142.

The protective cover 134 is provided with an opening 144 through which the suction passage 40 and the discharge passage 42 pass.

Similar to the water supply device 20 of the above embodiment, first open the faucet 12 and fill the whirlpool channel 126 with water from the suction passage 40, then turn on the power to start water supply operation, and the water is sucked in from the suction passage 40. The water in the faucet 12 is pressurized by the impeller 64 in the whirlpool waterway 126, and is supplied as high-pressure water from the water supply port 96 of the connection portion 32 through the discharge path.

Even in the case of this embodiment, since the suction passage 40 and the discharge passage 42 are formed of flexible pipes, the installation position of the water supply device 118 has a large degree of freedom. space or can be hung from the ceiling.

In addition, in the above description, the case where both the suction passage 40 and the discharge passage 42 are connected to the connection part 32 was explained, but the present invention is not limited to these embodiments, and the discharge passage 42
may be opened at another location (for example, directly discharged from the water supply device or near the connection portion 32). In particular, the discharge passage 4
2 is removably attached to the connecting part 32, so that in an emergency such as a fire outbreak, the discharge passage 42 can be removed from the connecting part 32 and used as a water pump for emergency fire extinguishing.

Further, in the embodiment described above, the water supply port 96 opens only at one location, but a plurality of these can be provided and each can be used to supply water to a gas water heater, a washing machine, etc.

〔Effect of the invention〕

As described above using one embodiment, by implementing the present invention, a highly reliable and practical water supply device that compensates for the insufficient water supply pressure of a water faucet can be replaced.

[Brief explanation of the drawing]

Fig. 1 is a sketch of a water supply device showing an embodiment of the present invention, Fig. 2 is a partial sectional view of the connection part in Fig. 2, Fig. 3 is a sectional view taken along line III--III in Fig. 2, and Fig. 4 is FIG. 5 is a partial sectional view of a water supply device showing another embodiment of the present invention, and FIG.
The sectional view, FIG. 6, is a simplified diagram of a small-scale house showing a conventional water supply form. DESCRIPTION OF SYMBOLS 12... Faucet, 20... Water supply device, 22... Main body, 31... Support body, 32... Connection part, 40... Suction path, 41... Partition wall, 42... ...Discharge path, 60...
・Electric motor, 64... Impeller, 74... Suction port, 96
...Water inlet.

Claims (1)

[Claims] 1. Comprising an impeller driven by an electric motor, a suction passage provided on the suction side of the impeller, and a discharge passage provided on the discharge side of the impeller, and the suction passage and the discharge passage are formed of flexible pipes. The suction passage includes a joint having a connection portion with a discharge passage and a faucet, and a water supply port that opens in the vicinity of the faucet, and the faucet and the suction passage, and the discharge passage and the water supply port are communicated with each other. A water supply device for a faucet, characterized in that the joint is connected to a faucet.