JP4903894B2 - Water circulation water supply system - Google Patents

Description

The present invention, like a pool or a large bathtub, in a water tank or the like where a large number of people enter at once, quickly shifts to normal operation from the start of operation, and a large amount of water temporarily overflows in a water tank such as a pool. The present invention relates to a circulating water supply system that can adjust the flow rates of overflow water and constantly circulating water even in the event of an abnormality, and can quickly return to normal operation when the amount of overflow water decreases.

As a circulating water supply system used for a pool or a large bathtub, there is a circulating water supply system as described in Patent Document 1, for example.
That is, it comprises a constant circulation path that constantly circulates water in a water tank such as a pool through a filter, and an overflow circulation path that once joins the water that has overflowed from the water tank into the overflow recovery tank and then merges with the regular circulation path. At the time of overflow in the overflow recovery tank, water corresponding to the overflow amount is supplied to the overflow recovery tank, and replenishment is performed when the total amount of circulated water is kept constant and decreases due to overflow in the overflow recovery tank. By doing so, we try to minimize drainage.

JP 2001-349075 A

However, the water circulation water supply system described in Patent Document 1 is a continuous overflow recovery system that is based on pool bottom suction and side discharge. The water-saving effect is superior to the conventional technology. However, if a large amount of pool water is returned to the overflow recovery tank later, such as in aquabics, the pool water exceeding the capacity of the overflow recovery pump will exceed the capacity (height) of the overflow recovery tank. The phenomenon of draining (overflowing) from the drainage channel can be seen.
The drained pool water can only cover a certain amount of replenishment water, and if there is a large amount of drainage from the overflow recovery tank, it takes time to recover the pool water level, and the pool program will be within the break time of the pool program. There was a problem that the water level could not be recovered.

The present invention solves such problems, and in a system for circulating water in the aquarium, the system quickly shifts to normal operation from the start of operation, and a large amount of water is temporarily stored in the aquarium such as a pool. To provide a circulating water supply system that can adjust the flow rate of overflow water and constantly circulating water even in the event of an overflow, and can quickly return to normal operation when the amount of overflow water decreases With the goal.
Another object of the present invention is to provide a circulating water supply system that can reduce the replenishment of water to the overflow recovery tank as compared with the conventional art and leads to water saving.

(1) The water circulation water supply system of the present invention is
A continuous circulation path that constantly circulates the water in the tank,
And an overflow circuit that always joins the water that overflowed from the water tank to the circuit at the confluence after being introduced into the overflow recovery tank.
While installing the first flow rate adjusting means on the upstream side of the junction in the constant circulation path,
Installing a second flow rate adjusting means upstream of the confluence in the overflow circuit;
The control unit
At the start of operation
Always open the first flow control means of the circulation path,
After the water in the tank is constantly circulated through the circulation path,
Open the second flow control means,
The overflow recovery tank water is joined at the junction with the circulating water in the continuous circulation circuit that has already started circulation, and overflow from the water tank is started,
Return the overflow water to the overflow recovery tank,
Measure the water level in the overflow recovery tank with the water level sensor,
In order for the water level of the overflow recovery tank to reach the specified level,
Controlling the opening of the second flow rate adjusting means;
Normal operation with the sum of the water flow rate kept constant with the water in the tank constantly overflowing,
The opening degree of the first flow rate adjustment means and the second flow rate adjustment means at this time is stored,
During abnormal operation when the overflow water from the aquarium increased rapidly,
By detecting the signal from the water level sensor of the overflow recovery tank where the water level has risen,
Rapidly opening the second flow rate adjusting means to increase the circulating water flow rate of the overflow circuit, suppressing the rising level of the rising overflow recovery tank,
On the other hand, in order to reduce the circulating water from the constant circulation circuit, the opening degree of the first flow rate adjusting means is reduced,
When the water level in the overflow recovery tank returns to the normal level during normal operation,
A circulating water supply system of water for returning the opening of the first flow rate adjusting means and the second flow rate adjusting means to the stored opening and returning to the state during normal operation,
Normal operation in which the sum of the water flow rate is kept constant with the water in the tank constantly overflowing,
A flow rate signal measured by a flow meter provided downstream of the first flow rate adjusting means and the second flow rate adjusting means is transmitted to the control unit;
In addition, a signal of the water flow rate measured by the flow meter provided at the downstream point of the confluence is transmitted to the control unit C,
The control unit controls the water flow rate of the first flow rate adjusting unit and the water flow rate of the second flow rate control unit, respectively, and controls the sum of the water flow rate flowing into the junction .
(2) The water circulation water supply system of the present invention is the above (1).
The controller is
In response to a signal from a water level sensor that uses ultrasonic waves, etc., provided at the bottom of the tank,
If the water level in the tank is lower than the specified value,
Open the electric on-off valve provided in the replenishment path to supply makeup water to the overflow recovery tank to raise the water level of the aquarium,
If the water level is higher than the predetermined value,
An electric on-off valve provided in the supply path is closed.
(3) The water circulation water supply system of the present invention is the above (1) or (2),
The first flow rate adjusting means is a constantly circulating water adjusting valve;
The second flow rate adjusting means is an overflow water adjusting valve.
(4) The water circulation water supply system of the present invention is the above (1) or (2),
The first flow rate adjusting means is a filtration pump;
The second flow rate adjusting means is an overflow recovery pump.

The water circulation water supply system according to the present invention is a system that circulates the water in the aquarium, so that it quickly shifts to normal operation from the start of operation, and a large amount of water temporarily overflows in the aquarium such as a pool. Even during times, the flow rate of overflow water and constantly circulating water can be adjusted, and when the amount of overflow water is reduced, normal operation can be quickly resumed.
In addition, the use of the water circulation water supply system of the present invention makes it possible to reduce the replenishment of water to the overflow recovery tank as compared to the conventional case, leading to water saving.

It is a flow sheet figure of the circulation water supply system of water concerning Embodiment 1 of the present invention. It is a flow sheet figure of the circulation water supply system of water concerning Embodiment 2 of the present invention. It is a graph which shows the fluctuation | variation of the amount of water flow of a regular circulation path and an overflow circulation path in the case of transfering from a driving | operation start to normal operation and abnormal operation in the water circulation water supply system of an Example.

The water circulation water supply system according to the present invention includes a continuous circulation path 2 that constantly circulates water in the water tank 1, and a continuous circulation path 2 at a junction 100 after the water overflowed from the water tank 1 is once introduced into the overflow recovery tank 6. And an overflow circuit 5 that is joined to the upstream circuit 1. The first flow rate adjusting means 21 (29) is installed upstream of the junction 100 in the circuit 2, and the upstream circuit 5 is upstream of the junction 100. The second flow rate adjusting means 53 (59) is installed on the side,
At the start of operation, the control unit C opened the first flow rate adjusting means (always circulating water adjustment valve 29) of the constant circulation path 2, and constantly circulated the water W in the water tank through the circulation path 2. Thereafter, the second flow rate adjusting means (overflow water adjusting valve 59) is opened, and the water in the overflow recovery tank 6 is merged with the circulating water in the always-on circulation circuit 2 already started to circulate at the junction 100. The overflow from the water tank is started, the overflow water is returned to the overflow recovery tank 6, the water level of the overflow recovery tank 6 is measured by the water level sensor 9, and the water level of the overflow recovery tank 6 becomes a predetermined level. By controlling the opening of the second flow rate adjusting means (overflow water adjusting valve 59), the water in the tank 1 is always overflowed and the total amount of water flow is At the same time, and the opening degree of the constantly circulating water control valve 29 and the overflow water control valve 59 at this time is stored, and the water level is changed during an abnormal operation in which the overflow water from the tank has increased rapidly. The signal from the water level sensor 9 of the rising overflow recovery tank 6 is detected, the overflow water control valve 59 is rapidly opened to increase the circulating water flow rate of the overflow circuit 5, and the rising water level of the overflow recovery tank 6 is increased. On the other hand, in order to reduce the circulating water from the constant circulation circuit 2, the opening degree of the constant circulating water adjustment valve 29 is reduced, and the water level of the overflow recovery tank 6 returns to the water level during the normal operation. At the time, the opening degree of the constantly circulating water regulating valve 29 and the overflow water regulating valve 59 is stored in the memory. Opening the return was, adjusted so as to return to the state of normal operation.

The control method in such a water circulation water supply system can be performed as follows.
That is,
(A) <Method for valve-controlling water tank bottom suction pipe and overflow recovery tank suction pipe>
In this valve control method, the water tank bottom suction pipe and the overflow recovery tank suction pipe have the same diameter, and the water level of the overflow recovery tank is measured by a sensor (for example, an ultrasonic sensor, a fine differential pressure sensor, etc.).
If the water level in the overflow recovery tank suddenly rises, increase the opening of the valve (for example, proportional control) installed in the overflow recovery tank pipe and adjust the valve (for example, proportional control) installed in the water tank bottom suction pipe. Reduce the opening.
When the water level in the overflow recovery tank drops, the opening of the valve (for example, proportional control) installed in the overflow recovery tank pipe is lowered and the opening of the valve (for example, proportional control) installed in the water tank bottom suction pipe Raise.
The opening of the valve (for example, proportional control etc.) installed in the water tank bottom suction piping and the valve (for example, proportional control etc.) installed in the overflow recovery tank piping is adjusted, and each amount of water flow is adjusted.

(B) <Method for controlling rotational efficiency of filtration pump and overflow recovery pump>
In this control method, the capacities of the filtration pump and the overflow recovery pump are made the same, and the water level of the overflow recovery tank is measured by a sensor (for example, an ultrasonic sensor, a slight differential pressure sensor, etc.).
When the water level of the overflow recovery tank rises rapidly, the rotational efficiency (for example, an inverter) of the pump motor of the overflow recovery pump is increased, and the rotational efficiency (for example, the inverter) of the pump motor of the filtration pump is decreased.
When the water level in the overflow recovery tank drops, control is performed to lower the rotational efficiency (for example, an inverter) of the pump motor of the overflow recovery pump and increase the rotational efficiency (for example, the inverter) of the pump motor of the filtration pump.

Due to the execution of the control according to the above method (A) or (B), the normal operation is promptly shifted from the start of operation, and a large amount of water temporarily overflows in a water tank such as a pool. By adjusting the flow rates of the overflow water and the constantly circulating water, it is possible to quickly return to normal operation when the amount of overflow water decreases.
In addition, water supply to the overflow recovery tank can be reduced as compared with the conventional case, and water can be saved.
Furthermore, since there is little pool water drained from the drainage channel of the overflow recovery tank, the possibility of recovering the pool water level within the break time of the pool program can be improved as compared with the conventional system.
The system (B) uses a filtration pump and an overflow recovery pump, but the system (A) does not require an overflow recovery pump.

<Embodiment 1>
Hereinafter, Embodiment 1 of the circulating water supply system of the present invention will be described with reference to the drawings.
1 is a flow sheet diagram of a water circulation water supply system according to Embodiment 1. FIG.
As shown in FIG. 1, a water circulation water supply system according to Embodiment 1 includes a pool (water tank) 1, a water circulation port 11 installed at the bottom of the pool 1, and a water supply port 12 installed on a side surface of the pool 1. , An overflow groove 13 is provided around the upper surface of the pool 1.

The constant circulation path 2 connects the water circulation ports 11, 11 and the water supply ports 12, 12. The water W of the pool 1 sucked from the circulating water ports 11, 11 is filtered while constantly circulating in the circulation path 2, and returned to the pool 1 through the water supply ports 12, 12 (arrow direction).

The filtration pump 21 operates based on the control unit C. The depilator 22 is always installed on the upstream side of the filtration pump 21 in the circulation path 2 (in the direction of the pool 1, the opposite direction is referred to as downstream, the same applies hereinafter). The hair remover 22 is for removing hair mixed in the pool water flowing into the filtration pump 21.

The constant circulation water adjustment valve 29 (first flow rate adjustment means) is installed on the upstream side of the depilator 22 in the constant circulation path 2. The constantly circulating water adjustment valve 29 is an electric on-off valve (hereinafter, the electric on-off valve is an example of an on-off valve), the opening degree of which is adjusted by the control unit C and sucked from the water circulation ports 11, 11. The flow rate of the water W of the pool 1 flowing to the filtration pump 21 is adjusted.

The filtration tank 23 is always installed downstream of the filtration pump 21 in the circulation path 2. The circulating water is filtered by passing through the filtration tank 23.

A heat source 25 such as a heat exchanger or a boiler is always installed downstream of the filtration tank 23 in the circulation path 2. The circulating water is maintained at a predetermined temperature by passing through the heat source 25.
The electric three-way valve 251, which is an example of a temperature adjusting valve, is controlled by the control unit C, and adjusts the set temperature by adjusting the hot water supply to the heat source 25.

The sterilizer 40 is connected to the downstream side of the filtration pump 21 in the constant circulation path 2 via the sterilizing agent injection path 41, and operates through the control unit C, so that the water that circulates through the circulation path 2 at all times. A bactericidal agent is injected periodically.

The water W of the pool 1 is sucked from the water outlets 11 and 11 by the operation of the filtration pump 21, while constantly circulating through the circulation path 2, hair is removed by the hair remover 22, and is filtered by the filtration tank 23. The heat source 25 is maintained at a predetermined temperature and sterilized, and then returned to the pool 1 through the water supply ports 12 and 12.

The drainage channel 3 is always connected to the circulation channel 2 via the valve 31 in the vicinity of the water circulation ports 11 and 11 in the pool 1. The drainage channel 3 is used when draining the water W in the pool 1 in principle.
Note that a drainage channel 32 from the filtration tank 23 also joins the drainage channel 3. This is to drain the drain in the filtration tank 23 that has become unnecessary and backwash drainage.
At the time of backwash drainage in the first embodiment, the overflow water adjustment valve (second flow rate adjustment means) is fully closed and the constantly circulating water adjustment valve (first flow rate adjustment means) is fully open.
Further, at the time of backwash drainage in the second embodiment to be described later, the overflow recovery pump (second flow rate adjusting means) is stopped and only the filtration pump (first flow rate adjusting means) is operated.

Next, the overflow recovery tank 6 is connected to the overflow groove 13 of the pool 1 via an overflow inflow path (overflow circulation path) 51. When the water W in the pool 1 overflows, the overflow water W enters the overflow groove 13.
Then, it flows into the overflow recovery tank 6 via the overflow inflow path 51 and the flow meter 101 and is temporarily stored. The amount of water W in the pool 1 that has overflowed is measured by the flow meter 101 and transmitted to the control unit C.
The overflow recovery tank 6 always stores a certain amount of water, and the water level of this certain amount can be set to a predetermined water level.

An overflow outflow path (overflow circulation path) 52 has an upstream end connected to the overflow recovery tank 6 and a downstream end via an overflow water adjustment valve 59 (second flow rate adjusting means) for constantly circulating water adjustment in the constant circulation path 2. It merges downstream of the valve 29.
The overflow water adjustment valve 59 is an electric on-off valve, the opening degree of which is adjusted by the control unit C, and the amount of water that is sucked from the overflow recovery tank 6 and flows to the filtration pump 21 is adjusted.
The water flow rate of the overflow water control valve 59 and the water flow rate of the constantly circulating water control valve 29 are:
The opening degree of each is adjusted via the control part C, and the sum total of the water flow amount at those junctions 100 is controlled.
Here, the sum means the total amount of water stored in the pool 1, the overflow recovery tank 6, the constant circulation path 2 and the overflow circulation path 52.

The overflow circulation path 5 is constituted by the overflow inflow path 51 and the overflow outflow path 52.

The drainage channel (of the overflow recovery tank 6) 57 is a drainage channel for cleaning the overflow recovery tank 6 and the like.

For example, an electric on-off valve 71 is provided in the supply path 7 for supplying water to the overflow recovery tank 6. By opening the electric on-off valve 71 by a signal from the control unit C, the overflow recovery tank 6 can be supplied with water.
A manual cock 72 is also installed in parallel with the electric on-off valve 71 so that water can be supplied manually.
During the water supply in the first embodiment, the overflow water adjustment valve (second flow rate adjustment means) is fully opened and the constantly circulating water adjustment valve (first flow rate adjustment means) is fully closed by a signal from the control unit C.
Further, at the time of water supply in the second embodiment to be described later, an overflow recovery pump (second flow rate adjusting means) is operated and a filtration pump (first flow rate adjusting means) is stopped by a signal from the control unit C.

Two level meters 81 are installed in the overflow recovery tank 6. This level meter 81 is composed of 5P electrodes (referred to as 1P electrode, 2P electrode... Sequentially from the upper electrode to the lower side), detects the upper limit / lower limit of the water level, and transmits a signal to the control unit C.
That is, the lower limit of the water level is detected by the 2P electrode and the 3P electrode, a signal is transmitted to the control unit C, the electric on-off valve 71 is opened by the signal from the control unit C, and water supply to the overflow recovery tank 6 is started. Then, the upper limit of the water level is detected, a signal is transmitted to the control unit C, the electric on-off valve 71 is closed by the signal from the control unit C, and the water supply to the overflow recovery tank 6 is stopped.
In order to prevent idling of the filtration pump or the overflow recovery pump, signals from the other electrodes 2P and 3P are transmitted to the control unit C, and on / off control of these pumps is performed by the signal from the control unit C. To do. All of these controls are performed via a control unit (control panel) C.

The water level sensor 9 is installed in the upper part or the lower part of the overflow recovery tank 6. The water level sensor 9 measures the water level of the overflow recovery tank 6 by measuring the distance from the installation position to the water surface by, for example, ultrasonic waves, and transmits a signal to the control unit C.
Then, the amount of water flow is varied by adjusting the opening of the overflow water adjustment valve 59 according to the water level within a predetermined range via the control unit C, and becomes large when the water level of the overflow recovery tank 6 becomes high. And when it becomes low, it controls to make it small.
That is, the water flow rate of the constantly circulating water adjustment valve 29 is controlled so that it is reduced when the water level of the overflow recovery tank 6 is high and is increased when the water level is low within a certain range.

The flow rate of the overflow water adjustment valve 59 and the flow rate of the constantly circulating water adjustment valve 29 are adjusted by controlling the opening degree of each valve by a signal from the control unit C.
In this case, these water flow amounts are transmitted to the control unit C by signals of the water flow amounts measured by the flow meters 101, 101 provided downstream of the constantly circulating water adjustment valve 29 and the overflow water adjustment valve 59,
Moreover, the signal of the water flow rate measured with the flow meter 101 provided in the downstream point of the confluence | merging point 100 can be transmitted to the control part C, and the sum total of the water flow rate can be confirmed.
The control unit C controls the water flow rate of the constantly circulating water control valve 29 and the water flow rate of the overflow water control valve 59 to control the total amount of water flowing into the junction 100.

<Control of the entire system>
<Setting of Openings of Regular Circulating Water Control Valve 29 (First Flow Control Unit) and Overflow Water Control Valve 59 (Second Flow Control Unit) During Normal Operation>
First, the opening degree of the first flow rate adjusting means (always circulating water adjustment valve 29) and the opening degree of the second flow rate adjusting means (overflow water adjustment valve 59) during normal operation are set.
That is, as shown in FIG. 3, when restarting the water circulation water supply system of the present embodiment from the previous operation stop state, the water tank (pool) 1 is in a state just before the overflow, so that the circulating water adjustment is always performed. The valve 29 (first flow rate adjusting means) is fully opened according to a command from the control unit C, and water is circulated through the circulation path at all times.
In this state, the pool water does not overflow and always circulates in the circulation path, so the pool level does not change.

Next, the water that has accumulated in the overflow recovery tank 6 is opened with the second flow rate adjusting means (overflow water adjusting valve 59) in accordance with a command from the control unit C, and the above-mentioned constantly circulating circuit. At the confluence with circulating water.
Then, the water in the pool 1 overflows, enters the overflow recovery tank 6 from the overflow groove 13, the level of the overflow recovery tank 6 rises, and the water level at this time is sequentially measured by the level meter 81 and the water level sensor 9, The data is transmitted to the control unit C.

Next, the control unit C receives signals from the level meter 81 and the water level sensor 9, sends a signal to open the second flow rate adjusting means (overflow water adjustment valve 59) further, and is on an upward trend. The opening degree of the overflow water adjustment valve 59 is controlled so as to suppress an increase in the water level of the overflow recovery tank and maintain a predetermined water level.
At this time, the water in the pool 1 is constantly circulated through the circulation circuit 2, and the overflow water is recovered from the overflow groove 13 to the overflow recovery tank 6, and is constantly circulated through the circulation path 2 and the overflow circulation path 5. The balance is maintained.
At this time, the openings of the constantly circulating water adjustment valve 29 and the overflow water adjustment valve 59 are stored in the control unit C (memory 1).

The opening degrees of the constantly circulating water adjustment valve 29 and the overflow water adjustment valve 59 balance the amount of overflow water.
The amount of overflow water can be grasped by a signal from the flow meter 101 provided in the middle of the overflow inflow path 51.

Moreover, in the water circulation water supply system in the embodiment, the control unit C receives a signal from the water level sensor 1a using an ultrasonic wave provided at the bottom of the pool, and the water level of the pool is lower than a predetermined value. Open the electric on-off valve 71 provided in the replenishment path 7 to supply replenishment water to the overflow recovery tank 6 to raise the water level of the pool, and if the water level is higher than a predetermined value, the replenishment path It is also possible to execute a control for closing the electric on-off valve 71 provided in FIG.
Thereby, when there is a water leak in the circulation path, the water level of the pool can be quickly returned to the normal level.

<Setting of Openings of Constantly Circulating Water Control Valve 29 (First Flow Control Unit) and Overflow Water Control Valve 59 (Second Flow Control Unit) During Abnormal Operation>
For example, when a large number of people enter once, the overflow water from the pool increases rapidly, and the water level in the overflow recovery tank 6 increases rapidly. Therefore, the signals from the level meter 81 and the water level sensor 9 are detected. The controller C rapidly opens the overflow water adjustment valve 59 to increase the circulating water flow rate of the overflow circuit 5 and stops the rising water level of the rising overflow recovery tank 6.
On the other hand, in order to reduce the circulating water from the constantly circulating circuit 2, the opening of the constantly circulating water adjustment valve 29 is controlled to be reduced.

<Return to normal operation>
When the rise of the water level in the overflow recovery tank 6 stops and returns to the water level during normal operation, the control unit C sets the opening degrees of the constantly circulating water adjustment valve 29 and the overflow water adjustment valve 59 in the memory 1. Return to the opening and return to normal operation.

As a result of such control, when a large amount of pool water has returned to the overflow recovery tank due to aquabics or the like in which a large number of people enter the pool at a time, in the circulating water supply system of Embodiment 1, the water level of the overflow recovery tank is It is stable at about 500 mm. For this reason, there is almost no drainage from the drainage channel 56 of the overflow recovery tank 6.
Therefore, the height of the overflow recovery tank can be reduced, leading to space saving and cost reduction.

<Effect of Embodiment 1>
In the circulating water supply system of the first embodiment, the temperature of water (circulating water) that temporarily drops when water is supplied because the water supply in the overflow recovery tank is less than in the conventional case and the water supply is reduced. There is less time and effort to heat the to the original temperature.
Furthermore, since only two filtration pumps are required in the past, the apparatus itself is compact, easy to install, requires less installation space, and further facilitates maintenance of the apparatus. . As a result, it can be used for a circulating water supply system in a pool or the like.

<Embodiment 2>
FIG. 2 is a flow sheet diagram of the water circulation water supply system according to the second embodiment.
In the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

In FIG. 2, the water W of the pool is always forcedly circulated through the circulation path 2 by the operation of the filtration pump 21 (first flow rate adjusting means), and the operation efficiency of the filtration pump 21 is an inverter based on the control unit C. It is adjusted in analog by etc.

The filtration tank 23 is installed on the downstream side of the filtration pump 21 in the constant circulation path 2 via the electric on-off valve 24. The circulating water is filtered by passing through the filtration tank 23.
The electric on-off valve 24 is controlled by the control unit C, and is opened only when the filtration pump 21 is operated and the circulating water always flows through the circulation path 2, and is closed when the circulating water does not flow.

The water W of the pool 1 is constantly circulated through the circulation path 2 by the operation of the filtration pump 21, the hairs are removed by the hair remover 22, filtered by the filtration tank 23, and adjusted to a predetermined temperature by the heat exchanger 25. Maintained.

An overflow outflow passage (overflow circulation passage) 52 has an upstream end connected to the overflow recovery tank 6 and a downstream end always joined to the downstream side of the electric on-off valve 24 in the circulation passage 2.
That is, the electric on-off valve 24 and the filtration pump 21 are always installed upstream of the junction 100 of the overflow outflow path 52 in the circulation path 2.

The overflow inflow path 51 and the overflow outflow path 52 constitute the “overflow circuit” of the second embodiment.

The overflow recovery pump 53 (second flow rate adjusting means) is installed in the middle of the overflow outflow path 52.
The overflow water stored in the overflow recovery tank 6 is always joined to the circulation path 2 by the operation of the overflow recovery pump 53, and is forcedly circulated as the pool water W.
The operation efficiency (water flow rate) of the overflow recovery pump 53 and the operation efficiency (water flow rate) of the filtration pump 21 are controlled by each inverter or the like, and the sum of each operation efficiency (water flow rate) is adjusted.

Even in the case of the second embodiment, these water flow rates are provided at the downstream point of the flow meter 101 provided downstream of the overflow recovery pump 53, the flow meter 101 provided downstream of the filtration pump 21, and the junction 100. It can be confirmed by the flow meter 101.
The controller C controls the flow rate of the overflow recovery pump 53 and the flow rate of the filtration pump 21 respectively, and controls the entire system so as to adjust the total flow rate of water flowing into the junction 100. Yes.

The special hair remover 54 is installed on the upstream side of the overflow recovery pump 53 in the overflow outflow passage 52. The special hair remover 54 is for removing dirt and hair mixed in the overflow water flowing through the overflow outflow passage 52.
The special hair remover 54 may not be installed.
The overflow recovery electric on-off valve 55 is installed downstream of the overflow recovery pump 53 in the overflow outflow passage 52.
The overflow open / close valve 55 is opened only when the overflow recovery pump 53 is activated and overflow water flows into the overflow outflow passage 52, and is closed when the overflow water does not flow.

The water level sensor 9 is installed in the upper part or the lower part of the overflow recovery tank 6. The water level sensor 9 measures the water level of the overflow recovery tank 6 by measuring the distance from the installation position to the water surface by, for example, ultrasonic waves. Then, the operating efficiency of the overflow recovery pump 53 is changed in accordance with the water level within a predetermined range via the control unit C, and becomes large when the water level becomes high and becomes small when the water level becomes low.
That is, the operating efficiency of the filtration pump 21 is small when the water level of the overflow recovery tank 6 is high, and is large when the water level is low.

<Effects of Second Embodiment>
The system of the second embodiment heats the temperature of water (circulating water) that temporarily drops when water is supplied because the water supply in the overflow recovery tank is less than that in the conventional tank and the water supply is less. As a result of reducing the time and effort required for the original temperature, it can be used in a water circulation system for water in a pool or the like.

Conventionally, an overflow recovery system with a small amount of water, such as a bathtub, drops the water level when the bather leaves the bathtub and takes a long time to recover, so the water level is directly applied to the bathtub, etc. for the purpose of speeding up the recovery of the water level. It was obliged to install a level meter to measure the water, and extra makeup water was supplied due to this, but by using the water circulation water supply system of the present invention, the water level recovery ability can be made faster than before, overflow recovery There is a possibility that the tank can be made smaller than before and a level meter need not be installed. It is highly possible that this will save water and reduce fuel costs. It can also be applied to waterscape facilities (waterfall overflow, etc.).
Therefore, the water circulation water supply system of the present invention has extremely high industrial applicability.

W ... Pool (water tank) water C ... Control unit 1 ... Pool (water tank)
DESCRIPTION OF SYMBOLS 11 ... Circulating water port 12 ... Water supply port 13 ... Overflow groove 2 ... Constant circulation path 21 ... Filtration pump (1st flow volume adjustment means of Embodiment 2)
DESCRIPTION OF SYMBOLS 22 ... Hair removal device 23 ... Filtration tank 24 ... Electric on-off valve 25 ... Heat sources, such as a heat exchanger, a boiler 251 ... Electric three-way valve for temperature control 29 ... Constant circulation water control valve (1st Embodiment 1) Flow rate adjustment means)
DESCRIPTION OF SYMBOLS 3 ... Drainage path 31 ... Valve 40 ... Sterilizer 41 ... Sterilizer injection path 5 ... Overflow circulation path 51 ... Overflow inflow path (overflow circulation path)
52 ... overflow outflow path (overflow circuit)
53. Overflow recovery pump (second flow rate adjusting means of embodiment 2)
54 ... Special hair remover 55 ... Electric on-off valve for recovery of overflow 56 ... Drainage channel (overflow recovery tank overflow drainage)
57… Drainage channel (overflow recovery tank)
59 ... Overflow water regulating valve (second flow rate regulating means of the first embodiment)
6 ... Overflow recovery tank 7 ... Supply path 71 ... Electric on-off valve 72 ... Manual cock 81 ... Level meter 9 ... Water level sensor 100 ... Junction point 101 ... Flow meter

Claims (4)

A continuous circulation path that constantly circulates the water in the tank,
And an overflow circuit that always joins the water that overflowed from the water tank to the circuit at the confluence after being introduced into the overflow recovery tank.
While installing the first flow rate adjusting means on the upstream side of the junction in the constant circulation path,
Installing a second flow rate adjusting means upstream of the confluence in the overflow circuit;
The control unit
At the start of operation
Always open the first flow control means of the circulation path,
After the water in the tank is constantly circulated through the circulation path,
Open the second flow control means,
The overflow recovery tank water is joined at the junction with the circulating water in the continuous circulation circuit that has already started circulation, and overflow from the water tank is started,
Return the overflow water to the overflow recovery tank,
Measure the water level in the overflow recovery tank with the water level sensor,
In order for the water level of the overflow recovery tank to reach the specified level,
Controlling the opening of the second flow rate adjusting means;
Normal operation with the sum of the water flow rate kept constant with the water in the tank constantly overflowing,
The opening degree of the first flow rate adjustment means and the second flow rate adjustment means at this time is stored,
During abnormal operation when the overflow water from the aquarium increased rapidly,
By detecting the signal from the water level sensor of the overflow recovery tank where the water level has risen,
Rapidly opening the second flow rate adjusting means to increase the circulating water flow rate of the overflow circuit, suppressing the rising level of the rising overflow recovery tank,
On the other hand, in order to reduce the circulating water from the constant circulation circuit, the opening degree of the first flow rate adjusting means is reduced,
When the water level in the overflow recovery tank returns to the normal level during normal operation,
A circulating water supply system of water for returning the opening of the first flow rate adjusting means and the second flow rate adjusting means to the stored opening and returning to the state during normal operation,
Normal operation in which the sum of the water flow rate is kept constant with the water in the tank constantly overflowing,
A flow rate signal measured by a flow meter provided downstream of the first flow rate adjusting means and the second flow rate adjusting means is transmitted to the control unit;
In addition, a signal of the water flow rate measured by the flow meter provided at the downstream point of the confluence is transmitted to the control unit C,
Water circulation characterized by controlling the amount of water flow of the first flow rate adjusting means and the amount of water flow of the second flow rate adjusting means by the control unit to control the total amount of water flow flowing into the junction. Water supply system. The controller is
In response to a signal from a water level sensor that uses ultrasonic waves, etc., provided at the bottom of the tank,
If the water level in the tank is lower than the specified value,
Open the electric on-off valve provided in the replenishment path to supply makeup water to the overflow recovery tank to raise the water level of the aquarium,
If the water level is higher than the predetermined value,
The water circulating / water supply system according to claim 1, wherein an electric on-off valve provided in the supply path is closed. The first flow rate adjusting means is a constantly circulating water adjusting valve;
The circulating water supply system for water according to claim 1 or 2 , wherein the second flow rate adjusting means is an overflow water adjusting valve. The first flow rate adjusting means is a filtration pump;
The circulating water supply system according to claim 1 or 2 , wherein the second flow rate adjusting means is an overflow recovery pump.

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