JPH0783502A - Hot water filling method for bath system - Google Patents

Abstract

PURPOSE:To avoid inconvenience of invalid function of a circulating pump immediately after completion of filling hot water by filling the hot water from a suction port in a state that both circulating and forcibly circulating circuits individually connected from two connecting points of both the circuits to discharge ports of a bathtub are shut OFF. CONSTITUTION:Circuits connected from two connecting points of both circulating and forcibly circulating circuits 1 and 1c to discharge ports 12a, 12b of a bathtub B are together shut OFF. Accordingly, warm water is fed from the two points reversely through the circuit 1 and a circulating pump P1, and fed from a suction port B) of an upstream end of the circuit 1 to the bathtub B1. Thus, the air stayed in the pump P1 and the circuit of the upstream side is urged from the port B1 to the bathtub B side, and the air of the circuit is replaced with filling warm water. Accordingly, inconvenience of invalid function of the pump P1 immediately after filling the warm water can be avoided, and an effective operation of bubble operation, etc., is obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bathing method for a bath apparatus incorporating a non-self-priming pump having a small size and a large capacity.

[0002]

2. Description of the Related Art As a bubble bath device capable of ejecting bubbles into a bathtub for improving the effect of bathing such as recovery from fatigue and promotion of health, a device having a water circuit shown in FIG. 1 has already been proposed. did. In this type, the suction port (B ₁ ) located at the bottom of the bathtub (B) → circulation pump (P ₁ ) → branch point (Q) → circulation switching valve (15) (16) → discharge port (12a) (12b) Circulation circuit that circulates with
(1) is formed. Further, an air suction circuit (13) for sucking outside air through the opening / closing valve (14) at the discharge ports (12a) (12b).
Are connected. The circulation pump (P ₁ ) is the pump and its upstream circuit (from the suction port (B ₁ ) to the circulation pump (P ₁ )
A so-called non-self-priming type that needs to be operated after bleeding the return path (1b) connected to is adopted, which prevents the circulation pump (P ₁ ) from becoming large.

The circulation switching valve (15) includes a switching valve (35) → a self-priming pump (P ₂ ) → a bath heat exchanger (11) → a forced circulation circuit (1 _C connected to the circulation switching valve (16)). ) Is connected to the switching valve (35), and a hot water filling circuit (3a) drawn from a water heater (not shown) is connected to the switching valve (35). With the filling of the bathtub (B) completed, the circulation circuit (1) is established and the open / close valve (1
4) is opened and the circulation pump (P ₁ ) is activated, the suction port
(B ₁ ) → Circulation pump (P ₁ ) → Circulation switching valve (15) and circulation switching valve
(16) → Bath water circulates in the circulation circuit (1) connected to the outlets (12a) (12b) and the bath (B) from the outlets (12a) (12b)
Air suction circuit (13) by ejector effect of ejected water into the inside
The outside air is sucked from and is supplied to the bathtub (B). That is, the bubble operation is performed.

However, in the bath apparatus having the above circuit configuration, there is a problem that the non-self-priming circulation pump (P ₁ ) may not function effectively immediately after the completion of the filling. This is because when filling the water without considering the water circuit to be used, the water filling operation may be completed while air remains in the circulation pump (P ₁ ) and its suction side circuit. .

In the case of the bath apparatus having the above water circuit, for example, it is possible to supply water from the water filling circuit (3a) while the circuit shown in FIG. That is, the water filling circuit (3a) → switching valve (35) → circulation switching valve (15) → discharge port (1
2b) circuit and water filling circuit (3a) → switching valve (35) → self-priming pump (P ₂ ) → bath heat exchanger (11) → circulation switching valve (16)
→ Each switching valve is switched so that a circuit connected to the discharge port (12a) is established, and hot water is supplied from the water filling circuit (3a) in this state. However, the above circuit, which is in the water flow state during the water filling operation, is kept full of water after the water filling operation is completed, but the circuit which is not in the water flow state during the water filling operation is filled with water after the water filling operation is completed. Instead, the air remains. Therefore, if you use the circuit of Fig.
When air remains in the circulation pump (P ₁ ) and its suction side circuit that do not become water-filled when filling with water, and in that case, when the circulation pump (P ₁ ) is driven after filling is completed, the circulation pump (P ₁ ) Air bites into ₁ ) and this does not work effectively. If the circulation pump (P ₁ ) does not function effectively due to air trapping, the suction port (B ₁ ) → circulation pump (P ₁ ) → circulation switching valve (15) → switching valve (35) → forced Circulating circuit (1 _C ) → Circulation switching valve (16) → After establishing a circuit connected to the discharge port (12a), operate the self-priming pump (P ₂ ) and operate the circulation pump (P ₁ ). It is necessary to reactivate the circulation pump (P ₁ ) after bleeding the circuit including the air. << Invention of Claim 1 >> The invention of Claim 1 has been made in view of the above-mentioned point, and "from the suction port (B ₁ ) on the wall surface of the bathtub via the non-self-priming circulation pump (P ₁ ). The circulation circuit (1) is formed so that it will be branched at the branch point (Q) and connected to the foot side and back side discharge ports (12a) (12b) of the bathtub wall, and the branch point
The two circuits connecting (Q) to the outlets (12a) (12b) are connected to each other, and the bath heat exchanger (11) and the self-priming pump (P ₂ )
A forced circulation circuit (1 _C ), further comprising the forced circulation circuit
(1 _C ) is equipped with a water filling circuit (3a), and water is supplied from the water filling circuit (3a) to fill the bathtub. The problem is to avoid the inconvenience that the circulation pump (P ₁ ) does not function effectively immediately after completion.

[0006]

[Technical Means] In order to solve the above-mentioned problems, the technical means of the invention of claim 1 is "a discharge port of a bath (B) from two connection points of a circulation circuit (1) and a forced circulation circuit (1 _C ). (12a) and (12b) are connected to each other, and both circuits are cut off, and water is filled from the suction port (B ₁ ). ”

[0007]

The above technical means operates as follows. Bathtub (B) from two connection points of circulation circuit (1) and forced circulation circuit (1 _C ).
The circuits connected to the respective discharge ports (12a) and (12b) are both cut off. Therefore, from the water filling circuit (3a) through the forced circulation circuit (1 _C ) to both ends of the circuit (1 _C ) and the circulation circuit (1)
The hot water flowing into the two connection points does not flow to the discharge ports (12a) (12b) side where the circuit is cut off from these connection points. That is, the hot water is circulated from the two connecting points.
(1) flows in the reverse direction, passes through the circulation pump (P ₁ ),
It flows from the suction port (B ₁ ) at the upstream end of the circulation circuit (1) into the bath (B).

Therefore, the circulating pump (P ₁ ) is supplied by the hot water for filling the water flowing in the circulation circuit (1) in a reverse flow manner.
And the air accumulated in the circuit on the upstream side is pushed out from the suction port (B ₁ ) to the bathtub (B) side.
The air in the circuit is replaced with full hot water.

[0009]

[Effect] The above technical means has the following effects. The air in the non-self-priming circulation pump (P ₁ ) and the circuit on the upstream side thereof is replaced with hot water which is filled when the water is filled, whereby the circulation pump (P ₁ ) is operated immediately after filling the water. In this case, air will not bite into it. That is, it is possible to avoid the inconvenience that the circulation pump (P ₁ ) does not function effectively immediately after filling the water, and it is possible to ensure a reliable operation such as bubble operation.

[0010]

Embodiments of the present invention described above will now be described in detail with reference to FIG. The bubble bath apparatus embodying the present invention has a configuration shown in FIG. 9, and the circulation circuit (1) and the forced circulation circuit (1 _C ) are configured in the same manner as those of the above-mentioned prior art. Next, details of the bath apparatus according to the present embodiment will be described.

The bath (B) is provided with a foot side outlet (12a) and a back side outlet (12b), and a circulation circuit is provided at each outlet.
The outgoing circuit (1a) branch circuit of (1) is connected separately. The return path (1b) from the suction port (B ₁ ) of the bathtub (B) is connected to the inlet side of a large capacity non-self-priming circulation pump (P ₁ ).
The forward path (1a) connected to the exit side of (P ₁ ) is branched at the branch point (Q), one of which is the foot side outlet (12a) and the other is the back side outlet (12b). They are connected to form a circulation circuit (1). Then, a branch circuit on the downstream side of the air suction circuit (13) is separately connected to the discharge ports (12a) (12b), and the route of the air suction circuit (13) to the discharge port is at the branch point. It is opened and closed by the on-off valve (14) inserted on the upstream side.

Filtration circuit provided in parallel with the circulation circuit (1)
(2) is a configuration in which the filtration container (20) is inserted, and 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 circulated. It corresponds to the forward direction of the circulation circuit by the pump (P ₁ ). A switching valve (31) is provided on the outlet side of the filtration container (20) in the filtration circuit (2).
A switching valve (32) is provided on the inlet side of (20),
The backwash circuit (3b) is connected to (31), and the discharge circuit (3c) is connected to the switching valve (32).

In this bubble bath apparatus, a water heater (4) and a bath heat exchanger (11) are built in. 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 discharge circuit (44), and 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 a 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 water flow rate, 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 communicatively connected to the side wall of the valve chamber (51).
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 circulation switching valve (16) via a heat exchanger for bath (11), and a switching valve is provided between the self-priming pump (P ₂ ) and the circulation switching valve (15). (3
5) is inserted. A water flow switch (17) is inserted on the outlet side of the self-priming pump (P ₂ ), and a pressure type water level sensor (18) is placed between the circulation switching valve (16) and the discharge port (12a). Has been inserted. Therefore, the forced circulation circuit (1c)
5) → Changeover valve (35) → Self-priming pump (P ₂ ) → Water flow switch (17)
→ Bath heat exchanger (11) → Circulation switching valve (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.

[Hot-rolling operation] As shown in FIG.
When the hot water filling operation is performed, first, a fixed amount (5 liters) of hot water is supplied to the bathtub (B) as measured by the flow rate counter (34). That is, as shown in FIG. 3, the water filling valve (30) is opened and the switching control valve (33) is branched while the circulation pump (P ₁ ) and the self-priming pump (P ₂ ) are stopped. With the circuit (45) shut off and the hot water circuit (44) communicated with the hot water circuit (3a), the switching valve (35) is placed on both sides of the hot water circuit (3a) and the forced circulation circuit (1c). The circuit of is set to be in communication. Also, the circulation switching valve (15) shuts off the discharge port (12b) side and connects the switching valve (35) side to the branch point (Q) side of the outward path (1a), and the circulation switching valve (16) Is the forced circulation circuit (1c) by shutting off the outlet (12a) side
And the forward path (1a) branch point (Q) side are set to communicate with each other, and the switching valves (31) and (32) are connected to the filtration circuit (2) and the return path (1).
b) It is set to communicate with the side. As a result, as shown in the figure, the hot water supplied from the hot water filling circuit (3a) to the switching valve (35) is connected to the circuit from the circulation switching valve (15) to the branch point (Q), and the bath heat exchanger. Switching valve from (11) Circulation switching valve (16)
Flow through the circuit connected to the branch point (Q), and the hot water is forwarded (1a) → non-self-priming circulation pump (P ₁ ) and filtration circuit.
(2) → It flows into the suction port (B ₁ ) and is supplied to the bathtub (B). And since hot water is supplied in a manner that the circulation pump (P ₁ ) flows backward, if air is accumulated in the circulation pump (P ₁ ) and the circulation circuit (1) on the upstream side thereof, The air is pushed out of the suction port (B ₁ ) into the bath (B), and the circuit is filled with hot water.

In addition, at the time of filling with the hot water, the valve device (52) in the pressure feeding hopper (5) is operated by the hot water supply pressure, and the valve seat opening (55)
Since the side is opened and the air suction port (54) is closed, hot water is not discharged to the outside of the pressure feeding hopper (5), and the hot water filling circuit (3a) flows from the valve chamber (51). Flows to the downstream circuit (3a ₁ ) of the. 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 ) Are in communication with each other, the circulation switching valve (15) is connected to the forced circulation circuit (1c) side and the discharge port (12
b) with the forward path (1a) at the branch point (Q) side closed, and the circulation switching valve (16) connects the forced circulation circuit (1c) side with the discharge port (12a) side. The self-priming pump (P ₂ ) is set to an operating state by setting the outward path (1a) on the branch point (Q) side in a closed state. As a result, the hot water in the bathtub (B) is discharged from the outlet.
It is sucked from (12b) and discharged from the discharge port (12a), and thereby the presence or absence of residual water is detected. That is, in the circulation state of the forced circulation circuit (1c), the state in which the water flow switch (17) is "on" is a fixed time (30 seconds).
If it is continued, it is judged by steps (61) and (62) in Fig. 8 that there is residual water in the bathtub (B) up to the water level of the discharge port (12b).
On the contrary, when 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 repeatedly executed until the water level in (B) reaches the height of the discharge port (12b) and the water flow switch (17) continues to be “on” for a certain period of time. That is, a certain amount of hot water is intermittently filled until there is residual water.

When it is determined that there is residual water in the above-described residual water determination, 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 circuit of Fig. 5 is established to put the circulation pump (P ₁ ) into the operating state, and the circulation pump (P 1 The first air bleeding operation of the entire circulation circuit including ₁ ) is executed and it is checked whether or not this air bleeding is completed.

Therefore, 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, and then steps (63) to (65) in FIG. The operation of is executed. That is, as shown in FIG. 5, the circulation pump (P ₁ )
Is turned on, the return path (1b) communicates with the filtration circuit (2), the outward path (1a) communicates with the forced circulation circuit (1c) side, and
The outlet (12b) side is shut off and the outlet (12a) side is the forward path (1
a) and the forced circulation circuit (1c)
Each unit is set and the first air bleeding operation is executed.

By this, the circulation path of the suction port (B ₁ ) → the return path (1b), the circulation pump (P ₁ ) → the filtration circuit (2) is constructed, and the forward path (1a) to the discharge port (12a). 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.

Therefore, 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 judged that the air bleeding of this circulation circuit is completed. After that, the above-described continuous filling operation is performed in the mode shown in FIG. 3, whereby filling is performed using the circuit including the circulation pump (P ₁ ). Then, when the water level detected by the water level sensor (18) reaches the set water level higher than the water discharge ports (12a), (12b), the continuous water filling operation is stopped and the water filling is completed.

In the air bleeding check, when the water flow switch (17) is turned off, it means that a part of the circulation circuit (mainly the circulation pump (P ₁ )) has an air bite. Therefore, in this case, the circulation pump (P ₁ ) is stopped, the circuit shown in FIG. 6 is established, the second air bleeding operation is executed, and then the self-priming pump (P ₂ ) is used. The third air bleeding operation is performed. 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 as shown in FIG. The backflow cleaning of the filter member ensures the air removal of this portion.

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).

Further, in the second air bleeding operation, as shown in FIG. 8, when it is judged that the air bleeding is defective in the step (64) after completion of the first first air bleeding operation (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) is connected only to the forward path (1a) side and the forced circulation circuit (1c), and the switching valve (35) is set to communicate only the forced circulation circuit (1c), 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 state, the circulation pump (P ₁ ) is stopped and the self-priming pump (P ₂ ) is operated. As a result, the entire circulation path is forcedly circulated, and air is evacuated from the non-self-priming circulation pump (P ₁ ) and the filtration container (20).

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 to be abnormal and an error is displayed. When the water flow switch (17) is not continuously turned on for 15 seconds during the execution of the third air bleeding operation, this operation is continued for 5 minutes after the 15 second timer is reset, and during this time the water flow is stopped. 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 bite and air deficiency in each part of the circulation path (mainly the circulation pump (P ₁ )) can be eliminated. As a result, it becomes possible to detect the water level with high accuracy by the water level sensor (18), and the water is filled up to a predetermined water level, and the non-self-priming type is used in the reheating operation after completion of the water filling and the bubble operation operation. Circulation pump (P
₁ ) can function reliably. << Invention of Claim 2 >> The invention of Claim 2 is that "the bathtub is branched from the suction port (B ₁ ) of the bathtub wall through the non-self-priming circulation pump (P ₁ ) and then branched at the branch point (Q). Circulation circuit formed so as to connect to the outlets (12a) (12b) on the foot side and the back side of the wall
(1) and the two circuits connecting the outlet (12a) and (12b) from the branch point (Q) to each other and equipped with a heat exchanger for bath (11) and a self-priming pump (P ₂ ). a forced circulation circuit (1 _C) to, further comprising a forcible circulation circuit (1 _C) connected to a hot water filling circuit (3a), which hot water tension the bathtub with hot water from該湯clad circuit (3a) The above-mentioned method for filling a bath apparatus with water is to solve the same problem as the above-mentioned invention of claim 1.

[0032]

[Technical Means] In order to solve the above-mentioned problems, the technical means of the invention of claim 2 is "the discharge port of the bath (B) from the two connection points of the circulation circuit (1) and the forced circulation circuit (1 _C ). (12a) (12b) is connected to each one is cut off and one is connected to the other, and the forced circulation circuit (1 _C ) is connected to the other circuit connected to the discharge ports (12a) (12b). That is, the connection between the connected connection point and the branch point (Q) was blocked and the filling was performed. ”

[0033]

The above technical means operates as follows. Bathtub (B) from two connection points of circulation circuit (1) and forced circulation circuit (1 _C ).
One of the circuits connected to each of the discharge ports (12a) and (12b) is cut off. The connection point between the other circuit connected to the discharge ports (12a) (12b) and the forced circulation circuit (1 _C ) is the circulation circuit (1).
It is in a state of being disconnected from the branch point (Q) side (branch point branching into the circuit to the discharge ports (12a) (12b)) side. That is, in the circulation circuit (1), the outlet (12a) on the foot side or the back side
Two branch circuits connected to (12b) and a forced circulation circuit
When the connection points of (1 _C ) are the first and second connection points respectively,
The circuit connecting the branch point to the second connection point is cut off, and the circuit connecting the first connection point to the bathtub (B) is cut off.

Therefore, from the water filling circuit (3a) to the forced circulation circuit
The hot water supplied to the first connection point via (1 _C ) is cut off from the circuit connecting the first connection point to the bathtub (B).
Since it does not flow directly to the (B) side,
It flows in the circulation circuit (1) in the opposite direction.
That is, the circulation circuit (1) flows backward in the order of the first connection point → branch point (Q) → circulation pump (P ₁ ) → suction port (B ₁ ) on the wall surface of the bathtub. Therefore, the hot water flowing in the circulation circuit (1) in the reverse flow mode pushes the air accumulated in the circulation pump (P ₁ ) and the circuit on the upstream side thereof from the suction port (B ₁ ) to the bath (B) side. As a result, the circuit is filled with warm water.

On the other hand, since the second connection point and the branch point (Q) (the point where the discharge port (12a) (12b) is branched to the circuit) are in the cut-off state, the second connection point The hot water for filling water supplied to does not flow to the branch point (Q) side. Therefore, the hot water supplied to the second connection point directly flows into the bathtub (B) from the connection point. As a result, the circulation pump (P ₁ ) is reversely passed from the first connection point to the bathtub (B).
It is possible to perform a water filling operation using two circuits, that is, a circuit directly connected to the bathtub (B) from the second connection point.

[0036]

The invention of claim 2 has the following unique effect. Similar to the first aspect of the invention, a non-self-priming circulation pump when filling water
Since the air in (P ₁ ) and the circuit on the upstream side thereof is replaced with warm water, the circulation pump (P ₁ ) can be reliably operated even immediately after the filling of the hot water.

A circuit connecting the circulation pump (P ₁ ) from the first connection point to the bathtub (B) in the reverse direction, and the bathtub (B) connected from the second connection point.
Since the water can be filled by using two circuits of the circuit directly connected to, the filling speed becomes faster than the case of filling the water only from the circuit on the circulation pump (P ₁ ) side.

[0038]

[Embodiment] Next, an embodiment of the invention of claim 2 will be described. The bath device used for carrying out the invention of claim 2 has the same water circuit as that of the above-mentioned claim 1. And
The embodiment of the invention of claim 2 is the same as that of FIG.
The control is performed in exactly the same manner as the embodiment of the invention of claim 1 described above except that the filling operation is advanced with the circuit of FIG. Hereinafter, only the filling operation of this embodiment will be described with reference to FIG.

The water filling valve (30) is opened while the circulation pump (P ₁ ) and the self-priming pump (P ₂ ) are stopped. Switching valve (35)
Is the state where the circuit to both sides of the hot water circuit (3a) and the forced circulation circuit (1 _C ) are in communication, and the circulation switching valve (15) is the branch point of the outward path (1a).
The (Q) side is shut off so that the discharge port (12b) communicates with the forced circulation circuit (1 _C ), and the circulation switching valve (16) is shown in FIG. It is maintained in the same posture as the circuit diagram when filling water. Further, the attitudes of the switching valves (31), (32) are also set in the same manner as in FIG. 3 above, whereby the filtration circuit (2) and the return path (1b) are maintained in communication with each other.

As a result, as shown in FIG. 10, the water filling circuit (3a) → the switching valve (35) → the circulation switching valve (15) → the discharge port (12b).
A circuit connected with the hot water filling circuit (3a) → switching valve (35) → bath heat exchanger (11) → circulation switching valve (16) → branch point (Q) → outward path (1a)
→ Non-self-priming type circulation pump (P ₁ ) → Filling operation using two circuits of the circuit connected to the suction port (B ₁ ) progresses. And, at the time of filling with the hot water, by the hot water flowing through the latter circuit,
The air in the non-self-priming circulation pump (P ₁ ) and the circuit on the upstream side thereof is pushed out and replaced with hot water.

Further, since the filling operation to the bathtub proceeds through the two circuits connected to the suction port (B ₁ ) and the discharge port (12b), only one circuit on the suction port (B ₁ ) side is used. There is an advantage that the filling operation can be speeded up as compared with the first aspect of the invention. In the above-mentioned embodiment, the filling operation is performed by using the suction port (B ₁ ) and the discharge port (12b), but the discharge port (12a) is used instead of the discharge port (12b). You may do it. That is, as shown in FIG. 11, the water filling circuit (3a) →
Switching valve (35) → self-priming pump (P ₂ ) → bath heat exchanger (11) →
Circulation switching valve (16) → circuit connected to discharge port (12a) and hot water filling circuit (3a) → switching valve (35) → circulation switching valve (15) → branch point (Q) →
Outward path (1a) → Circulation pump (P ₁ ) and filter container (20) → Suction port (B
Two circuits, that is, the circuit connected to ₁ ) are used, and the circuit connected from the circulation switching valve (15) to the discharge port (12b) is filled with water in a disconnected state. And even in this case, the circulation pump (P
_The hot water flowing from ₁ ) to the suction port (B ₁ ) causes the air staying in the circuit to be pushed out into the bath (B), and the circuit is filled with the hot water.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a water circuit in the prior art.

FIG. 2 is an explanatory view of the filling operation in the prior art.

[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.

FIG. 9 is an overall view of the configuration of an embodiment of the present invention.

FIG. 10 is a circuit diagram illustrating an embodiment of the invention corresponding to claim 2;

FIG. 11 is a circuit diagram illustrating a second embodiment of the invention corresponding to claim 2;

[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 (Q) ・ ・ ・ Branch point

Claims (2)

[Claims] 1. A suction port (B₁) To non-self-priming circulation
Ring pump (P₁) And then at the junction (Q)
Connect to the outlets (12a) (12b) on the foot side and the back side of the wall
The formed circulation circuit (1) and the outlet from the branch point (Q) above
(12a) Connect the two circuits connected to (12b) to each other and
Lu heat exchanger (11) and self-priming pump (P ₂) Compulsory
Circulation circuit (1_C), And the forced circulation circuit (1_C) Is connected to
A hot water filling circuit (3a) is provided, and hot water is supplied from the hot water filling circuit (3a).
To fill the bathtub with hot water
, The circulation circuit (1) and the forced circulation circuit (1_C) Two connections
Connect to the outlet (12a) (12b) of the bathtub (B) separately from the continuation point
Suction port (B₁) Like hot water filling
Hot water filling method for bath equipment. 2. A suction port (B₁) To non-self-priming circulation
Ring pump (P₁) And then at the junction (Q)
Connect to the outlets (12a) (12b) on the foot side and the back side of the wall
The formed circulation circuit (1) and the outlet from the branch point (Q) above
(12a) Connect the two circuits connected to (12b) to each other and
Lu heat exchanger (11) and self-priming pump (P ₂) Compulsory
Circulation circuit (1_C), And the forced circulation circuit (1_C) Is connected to
A hot water filling circuit (3a) is provided, and hot water is supplied from the hot water filling circuit (3a).
To fill the bathtub with hot water
, The circulation circuit (1) and the forced circulation circuit (1_C) Two connections
Connect to the outlet (12a) (12b) of the bathtub (B) separately from the continuation point
While disconnecting one of the circuits and connecting the other,
Above for the other circuit leading to the outlets (12a) (12b)
Forced circulation circuit (1_C) Is connected to the connection point and the branch point (Q)
A bath device that is filled with water with the space between
Water filling method in Japan.