JPH0724224A - Bath device control method - Google Patents

Abstract

(57) [Summary] [Purpose] A circulation circuit (1) formed between a bathtub (B) and a non-self-priming circulation pump, and a filtration circuit (2) that bypasses the inlet side and the outlet side of the pump. If, on the pump when provided with the discharge circuit connected to each other at both ends of the filtration circuits (2) (3 _c) and hot water filling circuit (3a), it was operated circulation pump of the non-self-priming In the method of controlling the bath device in which both ends of the filtration circuit (2) are in communication, the air remaining in the filtration container (20) can be removed. [Configuration] When the water flow when operated circulating pump non-self-priming does not occur, the circuit connected to the discharge circuit (3 _c) via filtration circuit from water filling circuit (3a) (2) is satisfied After that, water is temporarily supplied from the water filling circuit (3a), then both ends of the filtration circuit (2) are connected to the non-self-priming circulation pump side, and then the forced circulation circuit for additional heating. The self-priming circulation pump arranged in (1 _C ) was operated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling a bath device, and more particularly to a method for controlling a bath device of a type incorporating a filtering device for removing dust contained in bath water.

[0002]

2. Description of the Related Art Recently, a bath device which is capable of ejecting bubbles into a bathtub has been widely used in order to improve the bathing effect such as recovery from fatigue and promotion of health. As shown in Figure 1,
The upstream end of the return path (1b) constituting the circulation circuit (1) is connected to the lower part of the bathtub (B), while the downstream portion of the outward path (1a) constituting the circulation circuit (1) is connected to the bathtub ( It is connected to the discharge ports (12) and (12) formed on the back and foot side walls of B). Further, the circulation circuit (1) is provided with a so-called non-self-priming circulation pump (P ₀₁ ) which needs to be operated after bleeding the circuit. The non-self-priming type of the circulation pump (P ₀₁ ) is used because the self-priming type of the pump, which requires a large capacity, increases the size of the device.

[0003] Further, the circulation circuit (1) with forced circulation circuit formed so as to bypass a portion of the circuit (1 _C) is connected, to the forcible circulation circuit (1 _C) is Bath heat exchanger
(11) is provided. And the forced circulation circuit (1 _C )
A so-called self-priming small circulation pump (P ₀₂ ) of a type that can be operated without bleeding the circuit is inserted in this.

Further, a filtration circuit (2) for removing dust mixed in the bath water in the bathtub (B) is connected in parallel to the above-mentioned non-self-priming circulation pump (P ₀₁ ), and the filtration circuit A switching valve is installed in the circuit near the inlet and outlet of the filtration container (20) that constitutes the circuit (2).
(31) and (32) are arranged. Then, the switching valve (3
The discharge circuit (3 _c ) that opens to the atmosphere is connected to 2), and the water filling circuit (3 a) drawn from the water heater (4) is connected to the switching valve (31) on the other outlet side. Has been done.

An air suction circuit (13) for sucking the outside air is connected to the discharge ports (12) (12) formed on the side wall of the bathtub (B) through the opening / closing valve (14). ing. When filling the bathtub (B) with hot water, first of all, until the outlet (12) is submerged in water.
After supplying hot water into the bathtub (B) from (4), operate the non-self-priming circulation pump (P ₀₁ ). As a result, air that may have accumulated in the location of the water level sensor (18) (usually composed of a water pressure gauge) provided in the circuit near the discharge port (12) is stored in the bathtub (B). Pushing it out allows the sensor to detect the water level in the bathtub. After removing the air, the water level sensor (18) monitors the water level to supply hot water from the water heater (4) to the bathtub (B) to advance the filling operation.

[0006] In addition, a non-self-priming type circulating pump is used after the completion of the filling.
P (P₀₁) And open the intake on-off valve (14)
Then, the bath water circulates and is discharged in the circulation circuit (1).
Ejector of jet water spouting from the mouth (12) (12) into the bathtub (B)
Outside air is sucked from the air suction circuit (13) due to the effect.
This is ejected into the bathtub (B). This makes the bath
The inside of the tank (B) becomes a bubble bath. Also, during the above bubble operation
The switch installed near the inlet / outlet of the filtration container (20)
The valves (31) and (32) connect the filtration container (20) to a circulation pump (P ₀₁) On the side
It is maintained in a posture that allows communication. Therefore, above
Circulation pump (P₀₁) Of the circulation pump (P₀₁) of
A part of the discharge water branches to the switching valve (32) side and this
Circulation pump again through the filtration container (20) and switching valve (31)
(P₀₁) Is sucked in. That is, one of the circulating water in the circulation circuit (1)
Part flows to the excess container (20) side and is filtered.
The bath water in (B) is gradually purified.

On the other hand, while maintaining the non-self-priming circulation pump (P ₀₁ ) in a stopped state and heating the bath heat exchanger (11) by the burner, the other self-priming circulation pump (P ₀₂ ) is operated. When activated, the suction port at the bottom of the bathtub (B ₁ ) → Return path (1b) → Non-self-priming circulation pump (P ₀₁ ) → Self-priming circulation pump (P ₀₂ ) →
The bath water is forced to be circulated and heated in the circuit connecting the bath heat exchanger (11) → discharge port (12) → bathtub (B) to reheat the bathtub (B).

However, in the above, the filtration container (2
When air is accumulated in 0), there is a problem that the bubble operation and the water filling operation may not be properly performed. For example, when the circulation pump (P ₀₁ ) is operated to bleed the water in the water level sensor (18) at the initial stage of filling the water, if air remains in the filtration container (20), the air is switched over.
(31) is sucked into the circulation pump (P ₀₁ ) and the circulation pump (P ₀₁ )
₀₁ ) will be bitten. That is, the non-self-priming circulation pump (P ₀₁ ) does not operate. Therefore, in such a case, the air in the circulation circuit (1) cannot be removed and the water level sensor (1
Therefore, the water level in the bathtub (B) cannot be detected accurately by 8). In addition, the water level in the bathtub (B) becomes extremely low and the discharge port (1
When air enters into each water circuit from 2) or the suction port (B ₁ ), the air may accumulate in the filtration container (20). Then, in the case of performing the bubble operation under such conditions, the air that has entered the filtration container (20) bites into the circulation pump (P ₀₁ ) in the same manner as described above, and this does not work. .

The present invention has been made in view of the above-mentioned points. "The discharge port (12) and the suction port (B) provided on the constituent wall of the bathtub (B)
₁ ) and a circulation circuit (1) having a non-self-priming circulation pump, and formed so as to bypass a part of the circuit on the outlet side of the circulation pump in the circulation circuit (1) and a forced circulation circuit including a bath heat exchanger (11) (1 _C), and provided on the forcible circulation circuit (1 _C) inlet side is inserted so as to be connected to the outlet side of the non-self-priming circulating pump A self-priming circulation pump, a filtration circuit (2) formed to bypass the inlet side and the outlet side of the non-self-priming circulation pump, and the filtration circuit (2)
The discharge circuit (3 _c ) connected to one end of the filter circuit (32) via the switching valve (32) and open to the atmosphere, and the switching valve (3 _c ) at the other end of the filtration circuit (2).
A switching valve (31) is provided so that both ends of the filtration circuit (2) communicate with the non-self-priming circulation pump when the non-self-priming circulation pump is operated. ) (32) to control the bath device so that the air remaining in the filter container (20) can be removed.
Therefore, it is an object to ensure proper operation of the non-self-priming circulation pump.

[0010]

[Technical Means] The technical means of the present invention for solving the above-mentioned problem is to provide a water flow detecting means for detecting a water flow generated when a non-self-priming circulation pump is operated, If the water flow detecting means when operated equation circulating pump does not output a flow detection signal, the circuit connected to the discharge circuit (3 _c) via filtration circuit from water filling circuit (3a) (2) After switching the switching valve (31) (32) so that it holds, the water filling circuit (3
Temporarily supply water from a), then switch the switching valves (31) and (32) so that both ends of the filtration circuit (2) are connected to the non-self-priming circulation pump side, and then the forced circulation circuit for additional heating. The self-priming circulation pump arranged in (1 _C ) is operated. ”

[0011]

The above technical means operates as follows. If the water flow detection means does not output a water flow detection signal when the non-self-priming circulation pump is operated, the filtration container (20) of the filtration circuit (2)
Since there is a possibility that air is retained, hot water filling circuit (3a) from the filtration circuit (2) via to exhaust circuit (3 _c) switching valve so that the circuit is established leading to the (31) to ( 32) switch.
Then, the water supply operation from the water filling circuit (3a) is temporarily executed. Then, the supplied water is filtered by the filtration container (20) of the filtration circuit (2).
Through the discharge circuit (3 _c ) together with the air that has passed through the filter and stayed in the filtration container (20). This allows the filtration container (2
Air trapped in 0) is removed.

Next, the switching valves (31) and (32) are switched so that both ends of the filtration circuit (2) are connected to the non-self-priming circulation pump side,
In this state, the self-priming circulation pump arranged in the forced circulation circuit (1c) for additional heating is operated. Then, the water in the water circuit on the upstream side of the circulation pump is sucked. That is,
Bathing water in the bathtub (B) flows into the circulation circuit (1) from the suction port (B ₁ ) and is supplied to the non-self-priming circulation pump arranged in the circuit.

As a result, both the circuit connecting the inlet side of the non-self-priming circulation pump to the upstream bath (B) and the filtration circuit (2) are deflated.

[0014]

[Effect] The above technical means has the following effects. Since the air remaining in the filtration container (20) is deflated by supplying water from the water filling circuit (3a), when the non-self-priming circulation pump is subsequently operated, the circulation is performed from the filtration container (20). Air does not flow into the pump, and there is no concern that the circulation pump will malfunction.

[0015]

Embodiments of the present invention described above will be described in detail below with reference to FIG. The bubble bath apparatus adopting the method of this embodiment adopts the configuration shown in FIG. 2, and its basic configuration is the same as that of the conventional example described above. The bathtub (B) has the above-mentioned discharge port.
(12) Foot side outlet (12a) and back side outlet corresponding to (12)
(12b) is provided, and the forward path of the circulation circuit (1) is provided at each outlet.
The branch circuits of (1a) are connected separately. The return path (1b) from the suction port (B ₁ ) of the bathtub (B) is connected to the inlet side of the non-self-priming large-capacity circulation pump (P ₁ ) and is connected to the outlet side of this circulation pump (P ₁ ). The forward path (1a) to be connected is branched at the branch point (Q), one of which is the foot side outlet (12a) and the other is the back side outlet (12a).
Circulation circuit (1) is constructed by connecting to b) respectively. The air suction circuit (1
The branch circuits on the downstream side of 3) are separately connected, and the path of the air suction circuit (13) to the discharge port is opened and closed by an opening / closing valve (14) inserted on the upstream side of the branch point.

Filtration circuit provided in parallel with the circulation circuit (1)
(2) is a configuration in which the filtration container (20) is inserted as in the conventional example.
Both ends of the filtration container (20) are connected to the inlet side and the outlet side of the circulation pump (P ₁ ), and the filtration direction of the filtration container (20) is the circulation pump.
It coincides with the forward direction of the circulation circuit by (P ₁ ). A switching valve (31) is provided on the outlet side of the filtration container (20) in the filtration circuit (2).
However, a switching valve (32) is provided on the inlet side of the filtration container (20), a backwash circuit (3b) is connected to the switching valve (31), and an exhaust circuit (3) is connected to the switching valve (32). 3c) is connected.

The bubble bath apparatus has a built-in water heater (4) and bath heat exchanger (11). The water heater (4) is
Bypass circuit (4) from the water pipe (41) on the inlet side to the heat exchanger
This is a so-called bypass mixing system in which 3) is merged with the circuit to be heated (42) via a heat exchanger. Therefore,
The tap water temperature from the tap water circuit (44) is maintained at the set temperature by controlling the distribution amount by the water supply pipe (41) and the control valve (46) inserted at the branch point of the bypass circuit (43).

Further, in this embodiment, the branch circuit (45) from the water supply pipe (41) is also joined to the hot water filling circuit (3a) branched from the hot water outlet circuit (44), and the switching control is performed at this joining point. The valve (33) is inserted. This switching control valve (33) is
The opening degree is controlled by (M), and in this embodiment, the amount of hot water to the hot water filling circuit (3a) can be controlled, and the hot water filling circuit (3a) and the hot water discharge circuit (44) side or branch circuit The (45) side can be selectively communicated. Therefore, tap water can be directly supplied to the bathtub (B) by connecting only the water filling circuit (3a) and the branch circuit (45), and in this case, the heated circuit (42) can be filled with cold water. Since it does not exist, the cold water sand phenomenon does not occur easily when tapping again.

In the water filling circuit (3a), a water filling valve (30), a flow counter (34) for measuring the amount of water filling, and a pressure feeding hopper (5).
However, they are inserted in this order, and the downstream end thereof is communicatively connected to the upstream side of the self-priming pump (P ₂ ) of the forced circulation circuit (1c) for circulation heating described later. A switching valve (35) is provided at the confluence of the hot water filling circuit (3a) and the forced circulation circuit (1c). This switching valve (35) shuts off the water filling circuit (3a) side so that only the forced circulation circuit (1c) communicates, and the switching circuit (3a) is a self-priming type of the forced circulation circuit (1c). The configuration is such that the pump (P ₂ ) side and the circulation switching valve (15) side are communicated with each other.

The pressure feeding hopper (5) includes a valve device (52) housed in a valve chamber (51) in a casing (50) and an air chamber (53) connected to the valve chamber and open to the atmosphere side. ) And is provided. An air suction port (54) is opened in a partition wall between the valve chamber (51) and the air chamber (53), and a valve seat port (55) is provided at a position facing the air suction port (54) and at an inlet portion of the valve chamber (51). ) Opens, and during this time,
A valve device (52) having a valve body facing the air suction port (54) and the valve seat port (55) is built in. And, this valve device (52) is always provided with a spring (not shown) for the valve seat opening.
It is urged to close (55) and open the air suction port (54), and the valve seat port (55) is opened and the air suction port (54) is closed by the water flow of the water filling circuit (3a). It is a form that acts like.

A downstream side circuit (3a ₁ ) of the water filling circuit (3a) is connected to the side wall of the valve chamber (51) so as to communicate therewith.
a ₁ ) and the air chamber (53) are the communication pipe (57) with the drain valve (56) inserted.
Connected by communication. The forced circulation circuit (1c) is a self-priming pump between the circulation switching valve (15) inserted in the back circuit of the circulation circuit (1) and the circulation switching valve (16) inserted in the foot circuit.
(P ₂ ) and the heat exchanger for bath (11) are inserted, the inlet side of the self-priming pump (P ₂ ) is connected to the circulation switching valve (15), and the self-priming pump (P ₂ ) The outlet side of ₂ ) is connected to the bath heat exchanger (11), and the switching valve (35) is inserted between the self-priming pump (P ₂ ) and the circulation switching valve (15). Further, a water flow switch (17), which is a water flow detection means, is inserted at the outlet side of the self-priming pump (P ₂ ), and the circulation switching valve (16) and the discharge port (12
A pressure type water level sensor (18) is inserted between a). Therefore, the forced circulation circuit (1c) consists of the circulation switching valve (15) → switching valve (35) → self-priming pump (P ₂ ) → water flow switch (17) → bath heat exchanger (11) → circulation switching valve ( It will be the route of 16).

The water level sensor (18) detects the pressure corresponding to the water level in the bath (B) communicating with the discharge port (12a). The operation of the bubble bath apparatus having the above configuration will be described below. In this embodiment, each unit is controlled by a microcomputer, and the operation of each main unit will be described with reference to the flowchart shown in FIG.

[Water filling operation] The water filling operation is performed.
As shown in Fig. 3, the circulation pump (P₁) And self-priming pump
P (P ₂) Is stopped and the water filling valve (30) is opened.
In both cases, the switching control valve (33) shuts off the branch circuit (45) to release the hot water.
With the passage (44) communicating with the hot water circuit (3a) side, switch valve
(35) is a circuit to both sides of the water filling circuit (3a) and the forced circulation circuit (1c).
With the passages open, the circulation switching valve (15) is
Cut off the point (Q) side and discharge port (12b) and forced circulation circuit (1c)
The circulation switching valve (16) is connected to the discharge port (12a).
Cut off the side and branch point (Q) of the forced circulation circuit (1c) and the outward path (1a)
The valves are set so that they are in communication with each other, and the switching valve (3
1) (32) is the state where the filtration circuit (2) and the return path (1b) side are connected
Is set to. As a result, the suction port (B₁)
And water is filled from the outlet (12b) side. When filling this water
The valve device (52) in the pressure feeding hopper (5) is operated by the hot water supply pressure.
Valve opening (55) side is opened and the air suction port (54) is closed.
Since it is in the valve-opened state, the hot water will flow outside the pumping hopper (5).
It will not be discharged, and will be discharged from the valve chamber (51) to the hot water circuit (3a).
Downstream circuit (3a₁) Flows. In addition, when this water is filled, circulation
Circuit (1), filtration circuit (2), and forced circulation circuit (1c)
Is entirely filled with hot water from the hot water circuit (3a).

At the initial stage of this hot water filling, the flow rate counter (3
4) and weigh a certain amount (5
L) of hot water is supplied to the bathtub (B). After this, the water filling valve (30) is closed to stop this water filling operation, and as shown in FIG. 4, the switching valve (35) closes the water filling circuit (3a) side and the forced circulation circuit (1c ), The circulation switching valve (15) connects the forced circulation circuit (1c) side with the discharge port (12b) side, and
With the branch point (Q) side of (1a) closed, the circulation switching valve (1
6) are set so that the forced circulation circuit (1c) side and the discharge port (12a) side are in communication and the branch point (Q) side of the outward path (1a) is closed, and the self-priming pump (P ₂ ) Is in operation. As a result, the hot water in the bathtub (B) is sucked from the discharge port (12b) and discharged from the discharge port (12a), whereby the presence or absence of residual water is detected. That is, the forced circulation circuit (1c)
If the water flow switch (17) is kept "ON" for a certain period of time (30 seconds) in the circulating state, the discharge port () is set in the bathtub (B) by steps (61) and (62) in FIG. It is determined that there is residual water up to the water level in 12b), and conversely, if the water flow switch (17) is "off," it is determined that there is no residual water.

If it is determined that there is no residual water,
In the same procedure as described above, a certain amount (10 liters) of water filling operation is executed again and the remaining water determination is performed. And
If it is determined that there is no residual water in this determination, the bathtub
The above operation is repeated until the water level in (B) reaches the height of the discharge port (12b) and the water flow switch (17) is turned on. That is, a certain amount of hot water is intermittently filled until there is residual water.

When it is judged that there is residual water in the above-mentioned residual water judgment, the water level sensor (18) detects the filling water level after the first to third air venting operations described in detail below are performed. Meanwhile, the continuous filling operation is executed in the state of FIG. 3, and when the filling water level in the bathtub (B) reaches the set water level, the filling operation is completed. [First to third air bleeding operation] When it is determined that there is residual water during the intermittent hot water filling, the circulation pump (P ₁ ) is set in the operating state and the entire circulation circuit including this circulation pump (P ₁ ) is operated. 1 The air bleeding operation is executed and it is checked whether or not this air bleeding is completed.

Therefore, steps (63) to (6) in FIG.
The operations up to 5) are executed. First, a certain amount (10 liters) of water filling operation is executed to further raise the water level in the bathtub (B) by a certain amount. After this, as shown in Fig. 5, the circulation pump (P ₁ ) turns on, the return path (1b) communicates with the filtration circuit (2), and the outward path (1a) communicates with the forced circulation circuit (1c) side. In addition, each part is set so that the discharge port (12b) side is blocked and the discharge port (12a) side is in communication with the return path (1b) and the forced circulation circuit (1c), and the first air bleeding operation is executed. To be done.

As a result, a circulation path of the suction port (B ₁ ) → return path ( ₁ b) / circulation pump (P ₁ ) → filtration circuit (2) is formed, and at the same time from the forward path (1 a) to the discharge port (12 a). Circuit is connected, and the forward path (1a) and the discharge port (12b) are blocked, and the suction port (B
₁ ) → Circulation pump (P ₁ ) → Outward path (1a) → Circulation switching valve (15) → Forced circulation circuit (1c) → Circulation switching valve (16) → Discharge port (12a) . At this time, the circulation switching valve (16) is in a state where the flow rate from the forward path (1a) to the discharge port (12a) is throttled and the circuit from the forced circulation circuit (1c) to the discharge port (12a) is set to the fully open state. Has been done.

Accordingly, when the hot water in the bathtub (B) is smoothly circulated in the circulation circuit shown in the figure by the operation of the circulation pump (P ₁ ), the circulation switching valve (1c) is provided in the forced circulation circuit (1c). A certain water flow from 15) to the circulation switching valve (16) is surely generated. After the first air bleeding operation is performed with the circulation pump (P ₁ ) operating for a certain time (10 seconds), steps (64) and (65) in FIG.
Air bleeding is checked by a certain time (20 seconds)
If the water flow switch (17) continues to be in the "ON" state, it is determined that the air bleeding of this circulation circuit is completed, and then the continuous filling operation described above is executed in the mode shown in FIG. When the water level detected by) becomes a set water level higher than the water discharge ports (12a), (12b), the continuous filling operation is stopped and the filling operation is completed.

When the water flow switch (17) is turned "OFF" in the air bleeding check, there is air biting in a part of the circulation circuit. So in this case,
The circulation pump (P ₁ ) is stopped, the second air bleeding operation is executed as shown in FIG. 6, and then the third air bleeding operation of FIG. 7 using the self-priming pump (P ₂ ) is executed. The second air bleeding operation is an operation of backwashing the filtration container (20) of the filtration circuit (2) for a certain period of time, and backwashing the filtration member in the filtration container (20) where air easily remains. By
This ensures air bleeding at this part.

In the second air bleeding operation, as shown in FIG. 6, the backwash circuit (3b) branched from the water filling circuit (3a) and the filtration circuit (2) are connected to each other, and the filtration circuit (2 ) And the outbound
Switching valve (31) (32) with the (1a) and return (1b) sides shut off
Is set, and the hot water filling valve (30) is opened to cause a reverse flow in the filtration circuit (2) so that the water is drained from the discharge circuit (3c).

In the second air bleeding operation, as shown in FIG. 8, when the first air bleeding operation of the first time is finished, it is judged that the air bleeding is defective in the step (64) (the water flow switch ( Only when (17) is off). On the other hand, the third air bleeding operation, as shown in FIG.
(1b) communicates with the filtration circuit (2), and the circulation switching valve (1
5) communicates only the forward circuit (1a) side with the forced circulation circuit (1c), and the switching valve (35) is set in a posture in which only the forced circulation circuit (1c) communicates, and the foot side circulation switching valve (16 ) Is the forced circulation circuit (1
c) and the discharge port (12a) are set to communicate with each other,
In this operation, the self-priming pump (P ₂ ) is operated with the circulation pump (P ₁ ) stopped. As a result, the entire circulation path is forcedly circulated, and the non-self-priming circulation pump (P ₁ ) and the filtration container (2
0) Bleed the inside.

In the third air bleeding operation, the control operation from step (66) to step (68) in FIG. 8 is executed, and in step (66), both the 15 second timer and the 5 minute timer are executed. Turned on, then steps (67) (68)
The output state of the water flow switch (17) is monitored by and when the "on" state of the water flow switch (17) continues for 15 seconds within 5 minutes, it is determined that the third air bleeding is completed, and the step (63) The following first air bleeding operation is re-executed.

When the first air bleeding operation is repeated a set number of times (20 times), it is determined that there is an abnormality and an error is displayed. When the water flow switch (17) does not turn on continuously for 15 seconds when performing the third air bleeding, this operation is continued for 5 minutes after the timer is stopped and reset for 15 seconds, and the water flow When the switch (17) is turned "on", the 15 second timer is turned "on" again, and the checks in steps (67) and (68) are executed.

It should be noted that the water flow switch is once for 5 minutes.
If (17) does not turn on for 15 _consecutive seconds, it is determined that there is something wrong with the circulation circuit, the self-priming pump (P ₂ ) is turned off, and then an error message is displayed. As described above, by selectively using the circulation pump (P ₁ ) and the self-priming pump (P ₂ ), air bites and air bleeding defects at each part of the circulation path are eliminated, and as a result, the accuracy of the water level sensor (18) is improved. It is possible to detect a high water level and to fill the water to a predetermined level, and to reliably operate the non-self-priming circulation pump (P ₁ ) in the reheating operation after completion of the water filling and the bubble operation operation. Can be made. [Others] In the above embodiment, the case where the air bleeding operation in the filtration container (20) is performed at the initial stage of filling the water is described. However, the air in the filtration container (20) is circulated by the circulation pump (P ₁ ), The air in the filtration container (20) may be removed. That is, when the on-off valve (14) of the air suction circuit (13) is opened and the circulation pump (P ₁ ) is operated, the air in the filtration container (20) is bitten into the pump (P ₁ ) and this functions. When it is not fulfilled, only the first to third air bleeding operations or the second air bleeding operation may be executed. Further, when the non-self-priming circulation pump (P ₁ ) does not function, the filtration container (2) may be used as necessary even when not in the water filling or bubble operation.
It goes without saying that the air bleeding may be performed.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a conventional example.

FIG. 2 is an overall view of a configuration of an embodiment of the present invention

[Fig. 3] State diagram of each part during filling operation

FIG. 4 is a state diagram of each part during residual water detection operation

FIG. 5 is a state diagram of each part during the first air bleeding operation.

FIG. 6 is a state diagram of each part during a second air bleeding operation.

FIG. 7 is a state diagram of each part during the third air bleeding operation

FIG. 8 is a flowchart of the control device of this embodiment.

[Explanation of symbols]

(B) ・ ・ ・ Bathtub (12) ・ ・ ・ Discharge port (B ₁ ) ・ ・ ・ Suction port (P ₁ ) ・ ・ ・ Circulation pump (1) ・ ・ ・ Circulation circuit (P ₂ ) ・ ・ ・ Self-priming Pump (1c) ・ ・ ・ Forced circulation circuit (15) (16) ・ Circulation switching valve (1c) ・ ・ ・ Forced circulation circuit

[Procedure amendment]

[Submission date] October 15, 1993

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] Figure 8

[Correction method] Change

[Correction content]

[Figure 8]

Continuation of front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display location // A47K 3/00 Z 7150-2D

Claims (1)

[Claims] 1. A circulation circuit (1) comprising a non-self-priming type circulation pump, which connects a discharge port (12) and a suction port (B ₁ ) provided on a constituent wall of a bathtub (B), and the circulation circuit. A forced circulation circuit (1 _C ) formed so as to bypass a part of the circuit on the outlet side of the circulation pump in the circuit (1) and equipped with a bath heat exchanger (11), and the forced circulation circuit ( 1 _C ), which bypasses the inlet side and the outlet side of the non-self-priming circulation pump and the self-priming circulation pump inserted so that the inlet side is connected to the outlet side of the non-self-priming circulation pump. A filtering circuit (2) formed as described above, an exhaust circuit (3 _c ) connected to one end of the filtering circuit (2) through a switching valve (32) and open to the atmosphere, and the filtering circuit (2) A water filling circuit (3a) is connected to the other end of the filtration circuit (3a) via a switching valve (31), and when the non-self-priming circulation pump is operated, both ends of the filtration circuit (2) communicate with the pump. I will do it Sea urchin switching valve (31)
(32) A method of controlling a bath device, wherein the non-self-priming circulation pump is provided with water flow detection means for detecting a water flow generated when the non-self-priming circulation pump operates. If the water flow detection means does not output a water flow detection signal when the
After switching the switching valves (31) and (32) so that a circuit connected to the discharge circuit (3 _c ) via (2) is established, water is temporarily supplied from the water filling circuit (3a), and then filtration is performed. Switch the switching valves (31) (32) so that both ends of the circuit (2) are connected to the non-self-priming circulation pump side, and then self-priming type installed in the forced circulation circuit (1 _C ) for additional heating. Method for controlling bath equipment that activates the circulation pump.