JPH0643631Y2 - Hot water filling device - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field and Outline of the Invention] The present invention performs the hot water supply operation when the hot water supplied to the bath reaches a filling level (hereinafter referred to as a target water level). The present invention relates to a water filling device that automatically stops.

The outline of the present invention is that high-speed water filling is performed in the bathtub until a certain time before completion of water filling, and when the time of completion of water filling is approaching, the progress of water filling is monitored while slowly filling water. This enables high-speed and accurate filling of water.

[Prior Art and Problem] As a water filling device that automatically stops the water filling operation when the water level in the bathtub reaches a target water level, conventionally, a water filling device having a configuration as shown in FIG. 6 has been adopted. Heat exchanger (1)
A water filling valve (4) and a water pressure gauge (5) are arranged in this order from the upstream side of the water filling circuit (3) connecting the two.

When water is filled, when the water filling valve (4) is opened and hot water is supplied from the heat exchanger (1) into the bath (2) to reach the target water level in the bath, a signal indicating this state is given. Output from the water pressure gauge (5), whereby the water filling valve (4) is closed and the water filling operation is stopped.

However, in the above-mentioned conventional one, when the hot water supply speed (filling speed) from the heat exchanger (1) side is increased, turbulent flow occurs at the position where the water pressure gauge (5) is arranged, and the water pressure gauge (5) The detected water pressure is disturbed by the turbulent flow, so that the water pressure gauge (5) cannot accurately detect the water level in the bathtub. That is, it becomes impossible to accurately determine the completion state of the filling.

Therefore, the water supply speed of the filling water to the bathtub (2) must be set to a slow speed at which turbulent flow does not occur in the filling circuit (3). Then, there was a problem that the time required for filling the water would be long.

The present invention has been made in view of the above point, and is described in "Bathtub (2)"
It is equipped with a water filling circuit (3) connected to the pipe and a water pressure gauge (5) which is arranged in this water filling circuit (3) and detects the water level in the bathtub as water pressure, and the water level in the bathtub reaches the target water level. In the "water filling device configured to stop the water filling operation by the detection output of the water pressure gauge (5)", until the time when the water pressure gauge (5) detects the completion of the water filling, Make sure that the bathtub (2) is supplied with hot water at high speed,
Even if the time required for filling water is shortened, it is an object to make it possible to accurately stop the filling operation when the water in the bathtub (2) reaches the target water level.

[Means] The technical means of the present invention for solving the above problems will be described with reference to the conceptual diagram shown in Fig. 1. The technical means of the present invention is "first water supply speed for outputting high-speed water supply signal". Setting device (11), second water supply speed setting device (12) that outputs a low speed water supply signal, and these first and second water supply speed setting devices (11), (1
2) A water supply speed control device (8) for controlling the water supply speed to the bathtub (2) according to the water supply signal output by the water supply signal, and the first and second water supply speed setting for the water supply speed control device (8). Bowl (1
A changeover switch (13) for selectively connecting either one of (1) and (12), and a water supply amount measuring device (6) for measuring the amount of water supplied to the bathtub (2) after the filling operation. And a water amount setting device (61) that outputs a signal indicating a water amount slightly smaller than the total amount of water to be supplied to the bathtub (2), and compare the output of this water amount setting device (61) with the water supply amount measuring device (6). And a comparator (7) that outputs a switching signal when the output of the latter increases, the switching switch (13) is switched to the second water supply speed setting device (12) side by the switching signal, and the switching signal When the water pressure gauge (5) detects the target water level after the occurrence of ", the filling operation is stopped."

[Operation] The above technical means operates as follows.

When the filling operation is performed, the filling water starts to be supplied into the bathtub (2) in the same manner as the conventional one described above.

Then, the amount of water flowing through the water filling circuit (3) after the water filling operation is started to be measured by the water supply amount measuring device (6),
A water amount setting device (6) that outputs a signal indicating the measured water amount and a signal indicating a slightly smaller amount than the total amount of water to be supplied to the bath (2).
The output of 1) begins to be compared by the comparator (7).

At the beginning of the filling operation in which only a small amount of water is supplied to the bathtub (2), the output of the water supply amount measuring device (6) is smaller than the output of the water amount setting device (61). The comparator (7) which outputs the switching signal only when the output of the latter is larger than that of the former is in a state where it does not yet output the switching signal. That is, the changeover switch (13) which is switched to the second water supply speed setting device (12) side by the changeover signal,
At the initial stage of the filling operation in which the switching signal is not output, the first water supply speed setting device (11) which outputs the high-speed water supply signal
The state switched to the side is maintained, and the high-speed water supply signal of the first water supply speed setting device (11) causes the water supply speed control device (8).
It is in a state of being applied to (a device for controlling the water supply speed to the bathtub (2)).

Then, the water supply speed control device (8) adjusts the water supply speed to the bathtub (2) in accordance with the high speed water supply signal output from the first water supply speed setting device (11), whereby the high speed water filling operation is performed. Progresses.

Eventually, when the water level in the bathtub approaches the target water level, the output of the water supply amount measuring device (6), which measures the amount of water supplied to the bathtub (2) after the water filling operation, is greater than the output of the water amount setting device (61). It becomes large, which causes a switching signal to be output from the comparator (7) which compares these two outputs.

When a switching signal is output from the comparator (7), the changeover switch (13) receives the signal and switches to the second water supply speed setting device (12) side, and the second water supply speed setting device (12) outputs. The low speed water supply signal is applied to the water supply speed control device (8) to switch to the low speed water filling operation, and after the low speed water filling starts, the output of the water pressure gauge (5) is started to be monitored. That is, the low-speed filling is advanced while monitoring the water level in the bathtub with the water pressure gauge (5) in order to perform an accurate filling operation.

Then, when the water level in the bathtub reaches the target water level and a water pressure signal corresponding to the water level is output from the water pressure gauge (5), the filling operation is completely stopped in the same manner as the conventional one.

As described above, according to the present invention, the bathtub (2) can be filled with high-speed water until the time when the water pressure gauge (5) detects the target water level (filling completion state).

[Effect] The present invention has the following unique effects.

Until the time when the water pressure gauge (5) detects the target water level (filled state), the bathtub (2) can be filled with water at high speed, and when the filled state is approaching, When the water level in the bathtub reaches the target water level, the slow water filling operation is switched to enable accurate water level detection in the bathtub with the water pressure gauge (5). The filling operation can be stopped accurately.

[Embodiment] Next, an embodiment of the present invention described above will be described in detail with reference to the drawings.

As shown in FIG. 2, in the water filling circuit (3), a flow rate detector (15) is provided which emits a pulse each time one amount of water flows in the water filling circuit (3). The flow rate detector (1
The downstream side of 5) is configured so that it is connected to the water supply pump (P) → heat exchanger (1) → water pressure gauge (5) → bathtub (2).

The number of pulses emitted from the flow rate detector (15) is counted by a counter (16). The flow rate detector (15) and the counter (16) constitute a supply water amount measuring device (6). Has been done.

Next, the output of the water filling switch (21) arranged on the wall surface of the bathroom is applied to the gates of the first and second thyristors (23) and (24) for storing the output. A first relay (25) for driving the water supply pump (P) is provided on the anode side of the one thyristor (23). And
The output contact (26) of the first relay (25) is connected in series with the water feed pump (P), and these output contacts (26)
A speed adjustment resistor (27) is inserted between the water pump and the water pump (P). The anode and cathode of the first thyristor (23) are short-circuited via the first transistor (28).

Next, the output of the water amount setting device (61) and the output of the water supply amount measuring device (6) which are initially set to values slightly less than the total amount of water to be supplied to the bathtub (2) are compared by a comparator (7). The comparison output is applied to the second transistor (32). The second transistor (32) is used to turn off the second thyristor (24) that stores the signal for turning on the water filling switch (21), and further, the anode of the second thyristor (24). The second relay (35) is inserted in the side circuit. The output contact (38) of the second relay (35) is connected to the first relay (2
It is wired so as to short-circuit both the output contact (26) of 5) and the speed adjustment resistor (27) connected in series with this.
In addition, on the input side of the water amount setting device (61) composed of a register, the small water amount stored in the first register (43) from the output of the water supply amount measuring device (6) when the filling of water is completed (this In the embodiment, it is set to 10 l) and the subtraction value (subtraction circuit (4
5) output) is being applied.

Next, the output of the water pressure gauge (5) that detects the water level in the bathtub and the output of the water filling completion water pressure setting device (63) in which the water pressure corresponding to the water filling completion water level is set are output by the water pressure comparator (65). The output of the water pressure comparator (65) is
Delay signal (delay circuit (36)) of the signal of the supply water measuring device (6) for measuring the amount of water supplied to the bathtub (2) and the comparator (7) for comparing the outputs of the water amount setting device (61) Output)
It is also applied to the AND circuit (37). And the AND
The output of the circuit (37) is in a state of being applied to the first transistor (28) for resetting the first thyristor (23) which holds the closing signal of the water filling switch (21).

Next, the actual use of the water filling device exemplified as the above embodiment will be described.

When the water filling switch (21) is turned on, the first and second thyristors (23) and (24) are turned on, and the first relay (25) is excited by the former ON operation of the first thyristor (23). And the output contact (26) is closed. Also, the latter second thyristor (24) is turned on, causing the second relay (35) to operate and its output contact (38).
Is closed, which causes the water pump (P) to
By closing the two output contacts (26) and (38), operation can be performed at the maximum output state. Further, the gas burner (42) starts to burn under the control of a control circuit (not shown) at the same time when the hot water filling switch (21) is turned on.

As a result, the bathtub (2) begins to be filled with water at high speed.

When high-speed filling is started, the water supply amount measuring device (6) starts to measure the amount of water supplied to the bathtub (2) and the output of the water amount setting device (61) (170 l as an initial value in this embodiment). (The value of is set) begins to be compared by the comparator (7). Then, in the initial stage of filling the water where the output of the water supply measuring device (6) is small, the state in which the "L" signal is output from the comparator (7) continues, and eventually the output of the water supply measuring device (6). Exceeds 170 liters set in the water quantity setting device (61),
The comparator (7) outputs an "H" signal as a switching signal.

Then, the “H” signal causes the second transistor (3
2) is turned on and the second thyristor (24) is returned to the off state, whereby the output contact (38) of the second relay (35) is opened and the circuit of the water pump (P) is switched to the other. Only the output contact (26) is kept closed.

When only one output contact (26) is closed,
The voltage applied to the water supply pump (P) drops, and this causes the water supply pump (P) to switch to a low speed operation and the water supply speed to the bathtub (2) slows down. That is, the low-pressure filling operation is switched to such an extent that the water level in the bathtub (2) can be accurately detected by the water pressure gauge (5).

Further, when the output of the water supply amount measuring device (6) reaches the 170 l and the comparator (7) outputs an "H" signal as a switching signal,
The signal is applied to the AND circuit (37) via the delay circuit (36), whereby the output of the water filling completion water pressure setting device (63) that stores the water pressure corresponding to the target water level (water filling completion water level) and the bathtub (2) The output of the water pressure comparator (65) for comparing the output of the water pressure gauge (5) for measuring the internal water level is ready to be taken out via the AND circuit (37). That is, the AND circuit (37) outputs the same signal as the water pressure comparator (65).

When the low-speed water filling operation progresses and reaches the target water level in the bathtub where the water filling is completed, the output of the water pressure gauge (5) becomes larger than the output of the water filling completion water pressure setting device (63), and the water pressure comparator ( 65) outputs the "H" signal, and similarly, the AND circuit (37) also outputs the "H" signal. Then, the signal causes the first transistor (28) to turn on and the first thyristor (23) to return to the off state, whereby the first relay (25) is deenergized and is in the only closed state. The output contact (26) is also opened and the water pump (P) is stopped.

That is, the filling operation is completed.

In the above embodiment, the amount of water set in the first register (43) from the output of the water supply amount measuring device (6) when the filling is completed (a signal indicating the amount of water in the bathtub when the filling is completed) In the embodiment, the subtraction circuit (4
When the water filling operation is completed while being calculated in 5), the above calculation result is reset in the water quantity setting device (61),
The contents of the water amount setting device (61) are updated each time the filling operation is completed.

And in the said Example, the speed adjustment resistance (27) and the output contact (26) of a 1st relay connected in series with a water pump (P) for making the said water pump (P) operate at low speed. As means, it corresponds to the second water supply speed setting device (12) described in the section of technical means. Further, the speed adjusting resistor (27) and the output contact (38) of the second relay (35) bypassing the output contact (26) connected in series with the speed adjusting resistor (27) are used for operating the water pump (P) at high speed. As means, it corresponds to the second water supply speed setting device (12) described in the section of technical means. Further, in this embodiment, the water supply pump (P) is used.
Is a water supply speed control device as described in the section of technical means (8)
Corresponding to.

As described above, according to the above-mentioned embodiment, high-speed water filling is performed until the switching signal is output from the comparator (7) near the completion of the water filling, and then the water pressure gauge is applied while low-speed water filling is performed. Since the water level in the bathtub is monitored in (5), the bathtub (2) can be filled in spite of high-speed filling.
The water filling operation can be stopped accurately when the inside water has reached the target water level and the water filling operation can be performed with high accuracy.

In the above embodiment, the contents of the water amount setting device (61) are updated every time the filling operation is completed. However, the water amount setting device (61) is only updated when the trial run after installation of the equipment is completed.
The contents of may be updated.

Next, a second embodiment of the present invention will be described with reference to FIGS.

As shown in FIG. 3, a water supply amount measuring device (6) for measuring the amount of hot water supplied to the bathtub (2) (a flow rate detector and a counter for counting its output as in the first embodiment described above). Water pressure gauge (5) for detecting the water level in the bathtub (2)
Is processed by a control circuit (S) incorporating a microcomputer. Further, the changeover switch (13) can be changed over by the output of the control circuit (S), and the first water supply speed setting device (11) and the second water supply speed are changed by the changeover operation of the changeover switch (13). The output of the setting device (12) is selectively applied to the water pump (P) as the water supply speed control device (8). A signal for operating the water feed pump (P) in the maximum output state is stored in the first water supply speed setting device (11), and the second water supply speed setting device (12) on the other side has the maximum signal. A signal for operating the water pump (P) with an output smaller than the output is stored. The control circuit (S) controls the gas valve (49) inserted in the gas circuit to the gas burner (42).

A control program as shown in the flow chart of FIG. 4 is stored in the microcomputer incorporated in the control circuit (S), and the control operation of the water filling apparatus of this embodiment will be described with reference to the flow chart of FIG.

The operation of the water filling switch (21) is monitored in step (91), and when this is operated, step (92) is executed to open the gas valve (49) to burn the gas burner (42). At the same time, the changeover switch (13) is switched so that the output of the first water supply speed setting device (11) is applied to the water feed pump (P). That is, the water pump (P) is operated in the maximum output state. Thereby, the high-speed filling operation to the bathtub (2) starts, and thereafter, the water supply amount measuring device (6) starts to measure the amount of hot water supplied to the bathtub (2).

In step (93), the output of the water supply amount measuring device (6) is monitored, and the amount of hot water measured by the water supply amount measuring device (6) is 170 l, which is slightly less than the total amount of water to be supplied to the bathtub (2).
Then, in step (94), the water pump (P) is operated at a low speed. That is, the output of the second water supply speed setting device (12), which stores a signal for operating the water feed pump (P) in an output state smaller than the maximum output state, is applied to the water feed pump (P). Thus, the changeover switch (13) is changed over. This allows the water pressure gauge (5) to be used in the bathtub (2).
The low-speed filling operation starts to the extent that the internal water level can be accurately detected. In this embodiment, the memory unit in the microcomputer for storing the water volume of 170 l corresponds to the water volume setting device (61) described in the section of the technical means, and the water volume and the water supply volume measuring device ( The functional unit in the microcomputer that executes the step (93) for comparing the measured water amounts in 6) corresponds to the comparator (7) described in the section of technical means.

Next, in step (95), monitor the output of the water pressure gauge (5),
When the water level in the bathtub detected by the water pressure gauge (5) reaches the target water level, the water feed pump (P) is stopped and the gas burner (42) is extinguished in step (96).

In each of the above embodiments, the water filling speed is switched by changing the output of the water pump (P).
An open / close valve with adjustable opening may be inserted in the water filling circuit (3). Further, as shown in FIG. 5, a bypass flow passage (40) connecting the upper and lower flow passage portions of the water filling valve (4) inserted in the water filling circuit (3) is formed, and the bypass flow passage (40) is also formed. An orifice (41) for adjusting the water filling speed and an auxiliary valve (44) may be provided in this case. In this case, the water pressure gauge (5) detects water pressure when the inside of the bath (2) approaches the target water level. At times, only the auxiliary valve (44) is opened so that the low speed filling operation is performed.

[Brief description of drawings]

FIG. 1 is a conceptual diagram of the present invention, FIG. 2 is an explanatory diagram of an embodiment of the present invention, FIG. 3 is a system explanatory diagram of the second embodiment, FIG. 4 is a flowchart explaining its control program, and FIG. Is an explanatory view of a modified example of the water supply speed control device (8), and FIG. 6 is an explanatory view of a conventional example. In the drawing, (2) ... tub (3) ... water filling device (5) ... water pressure Total (7) …… Comparator (8) …… Water supply speed controller (11) …… First water supply speed setter (12) …… Second water supply speed setter (13) …… Changeover switch (61)… ... Water quantity setting device

Claims (1)

[Scope of utility model registration request] 1. A water filling circuit (3) pipe-connected to a bath (2), and a water pressure gauge (5) arranged in the water filling circuit (3) for detecting the water level in the bath as water pressure. A first water supply speed setting device for outputting a high-speed water supply signal in a water filling device configured to stop the water filling operation by the detection output of the water pressure gauge (5) when the water level in the bathtub reaches a target water level (11), a second water supply speed setting device (12) that outputs a low speed water supply signal, and these first and second water supply speed setting devices (11),
(12) A water supply speed control device (8) for controlling the water supply speed to the bathtub (2) according to the water supply signal output by the water supply signal, and the first and second water supply speeds for the water supply speed control device (8). A changeover switch (13) for selectively connecting either one of the setting devices (11) and (12), and a water supply amount measuring device for measuring the amount of water supplied to the bathtub (2) after the filling operation. (6), a water amount setting device (61) that outputs a signal indicating a water amount slightly smaller than the total amount of water to be supplied to the bathtub (2), and the outputs of this water amount setting device (61) and the water supply amount measuring device (6) And a comparator (7) which outputs a switching signal when the output of the latter becomes large, and the switching switch (13) is switched to the second water supply speed setting device (12) side by the switching signal, Stop the filling operation when the water pressure gauge (5) detects the target water level after the switching signal is issued. The hot water filling apparatus.