JPH04272335A - Feed water equipment for building - Google Patents

Abstract

PURPOSE:To feed fresh water always by providing a water bearing tank with float sensors, to store a proper water quantity accommodated to a quantity to be used, in the tank, and by discharging the water outside a feed water line with output signal from a timer, till a set time, when the water is kept in the water tank. CONSTITUTION:An equipment is composed of a pump 5 for feeding water to a high place water tank 3 from a water bearing tank 2 set in a building 1, a feed water pipe 6 connected to the high place water tank 3, a cut-off valve 8 and a water discharging pipe 9 for discharging water outside a feed water line, and a water tank 10 for storing water flowed out of the water discharging pipe 9. Besides, the water bearing tank 2 is provided with a float sensor 11 for detecting the highest water level, a float sensor 12 for detecting a previously set water level, a circuit switch 13 for selecting and switching the two sensors 11, 12, and a feed water valve 15 to be opened or closed by the float sensors 11, 12. When using clients are few, than a storage water quantity is made less, and when water is kept in the water tank, then the water is discharged outside the feed water line, and fresh water is always fed into.

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 for buildings, and more particularly to a water supply system for buildings such as condominiums and hotels.

0002

[Prior Art] Conventionally, for example, Japanese Patent Application Laid-Open No. 61-216943
As stated in the publication, a water level detector is installed in the elevated aquarium, and a pump is operated according to the detection signal output from the water level detector to maintain the water level in the elevated aquarium at a constant level. A building water supply system that maintains water supply is proposed. The building's water supply system merely detects whether the water level in the tank is at its lowest or highest level.

0003

[Problems to be Solved by the Invention] By the way, if the building where the water supply system is installed is, for example, an apartment building or a hotel in a resort area, the purpose of its use is limited to summer escape, leisure, and sports, so it is difficult to use the water supply system during the off-season when there are few users. This caused a phenomenon in which water stored in an aquarium remained unused for a long time, a so-called dead water phenomenon, which was a sanitary problem.

[0004] The present invention was made in view of the above-mentioned actual situation in the prior art, and its purpose is to provide a water supply system for a building that can minimize dead water accumulated in a water tank and constantly supply fresh water. Our goal is to provide the following.

[0005]

[Means for Solving the Problems] In order to achieve this object, the present invention provides a pump for pumping water from a first water tank to a second water tank, and a pump for pumping water from a first water tank to a second water tank, and a pump for pumping water from a first water tank to a second water tank. A water supply device for a building that has a first water level detector that detects the water level, and stores water in a first water tank and a second water tank up to the water level detected by the first water level detector, A second water level detector is installed in each of the first water tank and the second water tank and detects a preset second water level lower than the water level, and the first water level detector detects the water level. a non-operating time for measuring the non-operating time of the pump and outputting a signal when the non-operating time of the pump reaches a preset time; a measuring means and an output signal from the non-operating time measuring means;
and a discharge means for discharging water from at least one of the water tank and the second water tank to the outside of the water supply line.

[0006]

[Operation] Since the present invention is configured as described above, during off-season when there are few users of the building and the amount of water used is small, the water level is detected by the second water level detection means by operating the selection means. In addition to reducing the amount of water stored in the aquarium, an appropriate amount of water can be stored in proportion to the amount of water used, and when water remains in the aquarium until a predetermined time has elapsed, there is a non-operating time measuring means. A signal is output from the tank to the discharge means, and the discharge means is activated to discharge the water in the water tank to the outside of the water supply line, thereby constantly supplying fresh water.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the water supply system for a building according to the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing one embodiment of the present invention.

As shown in FIG. 1, a first water tank (hereinafter referred to as "water tank") 2 and a second water tank are installed in a building 1.
water tank (hereinafter referred to as "elevated water tank") 3, and a pump 5 that sends water from the water receiving tank 2 to the elevated water tank 3 via a water pump 4.
, a water supply pipe 6 laid in the building 1 and connected to the elevated water tank 3, and a water tap 7 attached to the water supply pipe 6,
It is comprised of a water stop valve 8 and a drain pipe 9, which are connected to the water supply pipe 6 and are discharge means for discharging water outside the water supply line, and a water tank 10 that stores the water flowing out from the drain pipe 9.

The water tank 2 described above includes a first water level detector, such as a float sensor 11, which detects the highest water level, and a second water level detector, such as a float sensor, which detects a preset water level lower than the highest water level. 12, a circuit switch 13 that selects and switches whether the water level in the water receiving tank 2 is to be detected by either of these two sensors, a water supply pipe 14 that supplies water from the outside, and , a water supply valve 15 that opens and closes in response to a water level detection signal from the float sensor 11 or 12.

The above-mentioned elevated water tank 3 includes a first water level detector, for example, a float sensor 21, which detects the highest water level and outputs a stop signal to the pump 5, and a first water level detector, for example, a float sensor 21, which detects a preset water level lower than the highest water level. a second water level detector, such as the float sensor 22, which outputs a stop signal to the pump 5, and a lowest water level detector, such as a float sensor, which detects the lowest water level due to water reduction in the elevated water tank 3 and outputs a start signal to the pump 5. sensor 2
3, and a water level detector, for example, an electrode rod 24, which detects the water level when the water in the elevated water tank 3 has been retained for a long time and has been discharged, and outputs a start signal to the pump 5.

[0011] Also, a control panel 2 for controlling the activation of the pump 5 is provided.
6 is connected to one of the float sensors 21 and 22 via a selection means for switching the connection with the selected sensor 21 and 22, for example, a circuit switch 25, and is further connected to the float sensor 23 and the electrode rod 24. It is connected. A control panel 26 that controls opening and closing of the water supply valve 15 is connected to one of the float sensors 11 and 12 via a circuit switch 13 that switches connection to the selected sensor 11 and 12. The control panel 26 that controls the opening and closing of the water stop valve 8 includes a built-in non-operating time measuring means, such as a timer, which measures the non-operating time of the pump 5 and outputs a signal when the non-operating time reaches a predetermined time.

The operation of this embodiment is as follows.

During periods when water is frequently used, when the water supply valve 15 of the water tank 2 is opened and water is supplied from the outside to the water tank 2 via the water pipe 14 and the water supply valve 15, the maximum A circuit switch 13 is connected so that the float sensor 11 detects the water level and outputs a signal to the control panel 26. Thereby, water is stored in the water tank 2 up to the highest water level detected by the float sensor 11. In addition, if the circuit switch 25 is connected so that a signal is output to the control panel 26 when the float sensor 21 of the elevated water tank 3 detects the water level, the flow rate of the elevated water tank 3 will change depending on the use of water. When the water decreases to the water level of the float sensor 23, the pump 5 is activated and water is stored in the elevated water tank 3 up to the highest water level detected by the float sensor 21.

[0014] Then, when water usage is low and the frequency of operation of the pump 5 decreases, and when the non-operation time of the pump 5 reaches a preset time, the pump non-operation time measuring means in the control panel 26 is activated. A signal is output from the pump 5 to stop the activation of the pump 5, and then the water stop valve 8 is opened and the water in the elevated water tank 3 is discharged to the water tank 10 via the water pipe 9. Further, when the water in the elevated water tank 3 is drained, the electrode rod 24 detects the water level and outputs a signal to the control panel 26, and the control panel 26, for example, connects the circuit switch 13 to the float sensor 12 that detects the water level. Switch the connection to output the signal, and circuit switch 2
5 is switched so that the float sensor 22 detects the water level and outputs a signal, and the pump 5 is activated to store water up to the water level detected by the float sensor 22 of the elevated water tank 3. After that, the above-mentioned operation is repeated every time a signal is output from the pump non-operation time measuring means in the control panel 26. When the amount of water used increases again, the circuit switching device 13 and the circuit switching device can be switched from the control panel 26 by setting a timer or operating a button on an input device (not shown) that outputs a command signal to the control panel 26. 25 to output a switching signal so that the float sensor 11 and the float sensor 21 detect the water level.

In the embodiment configured as described above, an appropriate amount of water is stored in the water receiving tank 2 and the elevated water tank 3 according to the amount of water used, and the non-operation time of the pump 5 is set in advance. When the water reaches this point, the water in the tank is discharged to the outside of the water supply line, so there is no dead water and fresh water can always be supplied.

In the above embodiment, when the pump 5 is not in operation for a predetermined period of time, the water in the elevated water tank 3 is discharged, but the discharge pipe 9 and the stopper are arranged so that only the water in the water receiving tank 2 is discharged. The water valve 8 may be configured to be connected to the water receiving tank 2, or the water from both the water tanks 2 and 3 may be discharged together.

[0017]

[Effects of the Invention] Since the building water supply system of the present invention is constructed as described above, the amount of water stored in the water tank is reduced during the off-season when there are few users of the building and the amount of water used is small.
It is possible to store an appropriate amount of water according to the amount of water used, and when the water remains in the tank until the set time is reached, the water in the tank is discharged outside the water supply line, so fresh water is always supplied. There is an effect that can be done.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of a water supply system for a building according to the present invention.

[Explanation of symbols]

1 Building 2 Water tank (first tank) 3 Elevated water tank (second tank) 4 Lifting pipe 5 Pump 6 Water supply pipe 7 Faucet 8 Water stop valve (discharge means) 9 Drain pipe (discharge means) 10 Water tank 11 Float sensor (first water level detector) 12
Float sensor (second water level detector) 13 Circuit switch (selection means) 14 Water supply pipe 15 Water supply valve 21 Float sensor (first water level detector) 22
Float sensor (second water level detector) 23 Float sensor (minimum water level detector) 24 Electrode rod (water level detector) 25 Circuit switch (selection means) 26 Control panel

Claims (1)

[Claims] 1. A water tank comprising: a pump that sends water from a first water tank to a second water tank; and a first water level detector that detects the water level of each of the first water tank and the second water tank; 1st
A water supply system for a building that stores water in a first water tank and a second water tank up to a water level detected by a water level detector, which is installed in each of the first water tank and the second water tank, and Selecting whether to perform water level detection using a second water level detector that detects a lower preset second water level and the first water level detector, or to perform water level detection using the second water level detector. a selection means; a non-operation time measurement means for measuring the non-operation time of the pump and outputting a signal when the non-operation time reaches a preset time; and an output signal from the non-operation time measurement means; 1. A water supply device for a building, comprising a discharge means for discharging water from at least one of a first water tank and a second water tank to the outside of a water supply line.