JPH1066967A - Pressurized water purifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically supply purified water in accordance with the opening of a faucet by providing a feed water detector for detecting the water supply and controlling a motor-driven pump, pressurizing the feed water from the faucet by the pump, passing the feed water through a filtration tank and supplying the purified water. SOLUTION: A switching valve 28 is turned to purified water side, a faucet 6 is opened, and city water flows into a motor-driven pump 10 from a feed water passage 26. In this case, the water resistance of the tank 8 is made larger than that in the pump 10, a water feed port 14 is positioned higher than a feed water detector 12, and hence the feed water pressure is exerted on the detector 12. Consequently, a pressure receiving part 18 is raised against a presser spring 20, a permanent magnet 16 approaches a proximity switch 22, hence the contact is closed by the proximity switch 16 to energize the pump 10, and the supply of pressurized water is started. Consequently, the water is abundantly supplied through a filtration tank 10 under the water supply pressure of the faucet 6 plus the increased pressure of the pump 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water supply system utilizing water pressure for supplementing the water supply pressure of water supply.

[0002]

2. Description of the Related Art As a water supply system for compensating a water distribution pressure of a water supply in a home, for example, Japanese Patent Application Laid-Open No. 60-25837,
A water supply system was proposed in Japanese Patent Publication No. 61-50162.

[0003] In these proposals, for example, in the case of a multi-family housing by a natural falling water supply system from an elevated water tank, it is difficult to obtain a sufficient water supply pressure because the top floor has a smaller head drop than the lower floor. In addition, the present invention relates to a pressure booster that compensates for the water supply pressure from a faucet in a home where the water supply pressure of the water supply is not sufficient.

[0004]

In the above proposal, an embodiment using a motion pump that is manually operated and controlled in addition to the opening and closing operation of the faucet has been described. Automatically increase water supply according to opening and closing,
Aiming to improve operability and functions by supplying purified water.

[0005]

SUMMARY OF THE INVENTION These objects are attained by an electric pump having a suction side connected to a faucet and a discharge side connected to a filtration tank, and a water supply detection system for detecting the water supply state and controlling the operation of the electric pump. The problem can be solved by a pressure-intensifying water purifier provided with an apparatus, in which the pressure of water supplied from a faucet is increased by an electric pump and purified water is supplied through a filtration tank.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

FIG. 1 shows an intensifier water purifier 2 according to an embodiment of the present invention. An electric pump 10 has a suction side connected to a faucet 6 via a check valve 4 and a discharge side connected to a filtration tank 8. And a water supply detection device 12 that detects the state of water supply from the faucet 6 and controls the operation of the electric pump 10. In the water supply operation, the water supply flowing in by opening the faucet 6 is detected by the water supply detection device 12, and the electric pump 10 is automatically operated to supply increased pressure to the filtration tank 8,
Purified water is supplied from the water supply port 14. Further, the stoppage of water supply due to the closing of the faucet 6 is detected by the water supply detection device 12, and the electric pump 10 is automatically stopped. Here, the filtration tank 8 contains a filter body such as activated carbon or a hollow fiber membrane. The water supply detecting device 12 is composed of a pressure receiving portion 18 in the form of a disk formed integrally with a permanent magnet 16, a pressing spring 20, and a proximity switch 22 that normally opens a contact. The water supply state is transmitted to the control unit 24 of FIG. The positional relationship between these components is such that the filtration tank 8 downstream of the electric pump 10, the water supply detection device 12, and the like is arranged above to prevent air from being trapped inside. Further, the water flow resistance of the filtration tank 8 is configured to be larger than the water flow resistance of the electric pump 10. A switching valve 28 is provided between the faucet 6, the booster water purifier 2, and the water supply channel 26, and supplies tap water directly from the faucet 6 to the tap water or to the booster water purifier 2. , So that they can be selected manually.

Next, the water supply control function will be described with reference to FIG. 2 showing the concept of the electric circuit of the pressure booster water purifier 2. here,
Power supply 30, transformer 32, electromagnetic switch 34, and electric pump 1
0 is connected in series, and the contact 34A of the electromagnetic switch 34 is normally open. First, when the faucet 6 is opened while the switching valve 28 is selected for water purification, tap water flows into the electric pump 10 from the water supply passage 26. here,
By making the water flow resistance of the filtration tank 8 larger than the water flow resistance in the electric pump 10, or by setting the position of the water supply port 14 higher than the water supply detection device 12,
Water pressure is applied to For this reason, the pressure receiving part 18
As a result, the permanent magnet 16 approaches the proximity switch 22. When the proximity switch 22 closes the contacts due to the magnetic force of the permanent magnet 16, the excitation winding 34B of the electromagnetic switch 34 is energized to close the contacts 34A to which the electromagnetic force is attracted, and the power supply 30 and the electric pump 10 When the power is supplied, the pressure-increasing water supply operation is started.

As shown in FIG. 3, when the electric pump 10 for increasing pressure is not provided as in a conventional water purifier directly connected to a water faucet, the water flow resistance in the filtration tank 8 is large. The water supply amount Po from the faucet 6 alone is a relatively small amount of water supply Q
Only o can be obtained.

However, in the case of the booster water purifying tank 2 according to the present invention, the water supply pressure P1 is the sum of the water supply pressure Po from the faucet 6 and the pressure increase P of the electric pump 10, and the water supply amount Q1 is large.
Is obtained. Further, when a plurality of (two in the figure) filtration tanks 8 are provided in parallel, the filtration resistance of the entire water supply system is further reduced, and a larger water supply amount Q2 can be obtained.
On the other hand, when the faucet 6 is closed, the internal pressure is increased by the pressure increasing action of the electric pump 10, so the electric pump does not stop immediately, and the purified water is supplied through the filtration tank 8 with the residual pressure to the water supply port 14. And let it flow out slowly. Along with this, the pressure on the discharge side of the electric pump 10 gradually decreases, the pressure receiving portion 18 drops by the resistance of the push spring 20, the permanent magnet 16 separates, the proximity switch 22 opens the contact again, and the electromagnetic switch 34 The connection between the electric pump 10 and the power supply 30 is released. As described above, the electric pump 10 automatically stops after a predetermined delay time after the water supply is stopped by closing the water faucet 6, so that the water supply pump 10 reacts sensitively to the opening / closing operation of the water faucet 6. Problems such as frequent starting and stopping are suppressed, and a stable water supply state and excellent durability can be maintained.

Here, in order to increase the delay time, the characteristics of the pressure receiving portion 18 and the pressing spring 20 of the water supply detecting device 12 may be changed, or a pressure accumulating tank may be provided.

Here, as a development plan of the present invention, a bypass circuit from the electric pump 10 to the water supply port 14 via another switching valve or the like is provided in parallel with the filtration tank 8.
In the case of dishwashing or the like that does not require purification, the water supply from the faucet 6 can be increased by the electric pump 10 and a large amount of water can be supplied from the water supply 14, thereby making cooking easier. In other words, the suction side of the electric pump 10 is connected to the faucet 6, the discharge side is branched into a plurality, the one is connected to the filtration tank 8, and the other is connected to the water supply port 14 via the switching valve, The water supply from the faucet 6 is detected and the pressure is automatically increased by the electric pump 10, via the filtration tank 8 or directly to the water supply port 14.
You can also select and supply water.

In the above-described embodiment, the water supply port 14 is provided at the upper part of the filtration tank 8. However, the water supply port 14 is connected to the switching valve 28 by a hose so that water is supplied from the switching valve 28 directly below the faucet 6. Is also good.

In addition, the present invention is not limited to a high water tank water supply system, but also in a direct pressure water supply system in which water is directly supplied to a household at a water distribution pressure by appropriately selecting a water supply pipe diameter and using a backflow prevention device in combination. It is thought that it can be used to supply sufficient purified water without affecting the water supply pressure and compensating for the lack of water supply pressure on the upper floors of the building.

In particular, in the case of an apartment house, compared with a pump pressurized water supply system in which the entire building is pressurized and supplied with a large pump, the pressure is increased and supplied only at a necessary portion such as a water purification system in the home. The pressurized water pump for the entire building can be downsized,
Energy saving can be achieved.

In the embodiment, the booster water purifier 2 installed downstream of the faucet 6 has been described. However, the water purifier 2 is disposed upstream of the faucet 6, and the pressure change due to the opening and closing of the faucet 6 and the amount of flowing water are controlled. The present invention can also be applied to a configuration of an undersink type in which the electric pump is operated to increase the pressure of purified water by operating the electric pump, and is stored under a sink of a sink.

In the above-described embodiment, the pressure sensing type 1
2 is provided on the discharge side of the electric pump 10,
The water supply detection device of the flow rate sensing type may be provided on the suction side or the discharge side of the electric pump 10.

Further, as another application example of the present invention, a plurality of proximity switches 22 are provided, for example, at different positions from the pressure receiving portion 18 respectively.
In the same manner as in the above-described embodiment, the operation of the electric pump 10 is automatically controlled (normally, the contact is open), and the other proximity switch (normally, the contact is closed) is higher than the pressure at which the contact of the proximity switch 22 is closed. The pressure keeps the contacts open. In this case, when there is a change in the distribution pressure of the water supply, or when water is supplied from the faucet 6 at a sufficiently high pressure, the other proximity switch is opened and the operation of the electric pump 10 is stopped. In addition, the internal pressure can be prevented from rising more than necessary, and energy can be saved.

[0019]

According to the present invention, it is possible to obtain an intensifier water purifier capable of automatically supplying purified water in response to opening and closing of a faucet.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a booster water purifier showing an embodiment of the present invention.

FIG. 2 is an electric circuit diagram according to an embodiment of the pressure intensifier of FIG. 1;

FIG. 3 is a water supply characteristic diagram of the embodiment of FIG. 1;

[Explanation of symbols]

2 ... Intensifier water purifier, 6 ... Faucet, 8 ... Filtration tank, 10 ... Electric pump, 12 ... Water supply detection device.

Claims (5)

[Claims] 1. An electric pump having a suction side communicating with a faucet and a discharge side communicating with a filtration tank, and a water supply detecting device for detecting a water supply state and controlling the operation of the electric pump. Pressure booster water supplied by the electric pump and supplied to the filtration tank. 2. An electric pump having a suction side communicating with a faucet via a reverse valve and a discharge side communicating with a filtration tank, and a water supply detecting device for detecting a water supply state and controlling the operation of the electric pump. Detecting the water supply from the faucet, automatically operating the electric pump to increase the pressure of the water supplied to the filtration tank, detecting the stoppage of the water supply from the faucet, and automatically stopping the electric pump. Intensifier water purifier. 3. An electric pump having a suction side communicating with a faucet and a discharge side communicating with a filtration tank, and a water supply detection device for detecting a water supply state and controlling the operation of the electric pump. The water flow resistance is made larger than the water flow resistance inside the electric pump, a water supply detection device is provided upstream of the filtration tank, and the pressure of water supplied from the faucet is increased by the electric pump and supplied to the filtration tank. Intensifier water purifier characterized by doing. 4. An electric pump having a suction side connected to a faucet, a discharge side branched into a plurality of parts, one of which is connected to a filtration tank, and the other of which is connected to a water supply port. A pressure increasing water purifier comprising a water supply detecting device for controlling the operation of the water pump, wherein the pressure of the water supplied from the faucet is increased by the electric pump, and the pressure is selected and supplied to the filtration tank or the water supply port. 5. An electric pump having a suction side communicating with a water faucet and a discharge side communicating with a filtration tank, and a control unit for detecting a water supply state and controlling the operation of the electric pump. By detecting the water supply by the above, the electric pump is started, the pressure is increased and water is supplied to the filtration tank, and after the water supply is stopped by closing the faucet,
A booster water purifier characterized in that the electric pump is stopped with a delay time.