JP3385682B2 - Hot water supply heating bath equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combination of a heating circulation pump driven by an electric motor and a bath heating circulation pump driven by a fluid without an electric motor in a hot water supply / heating bath apparatus.

[0002]

2. Description of the Related Art As shown in FIG. 5, a conventional hot-water supply / heating bath apparatus 1 includes a makeup water tank 2, a heating outward pipe 3, a heating radiator 4, and a heating radiator 4.
A circulation system path is formed by the heating return pipe 5, and a heating circulation pump 6, a heating heat exchanger 7, and a control valve 8 are arranged in the heating outward pipe 3 system, and the heating heat exchanger 7 and the control are performed. A bypass forward pipe 9, a bypass valve 10, a hot water storage tank 11, and a bypass return pipe 12 are arranged in order from between the valves 8 and a heating circuit 13 connected to the heating return pipe 5, and a reheating forward pipe 15 for the bathtub 14, A circulation pump 16 for reheating the bath, a heat exchanger 18 for reheating which is built in the hot water storage tank 11, and a reheating pipe 19 for reheating are formed in that order to form a circulation system passage. There is.

The hot-water supply / heating bath device 1 operates a heating circulation pump 6 driven by an electric motor to send high-temperature water obtained by a heating heat exchanger 7 to a heating radiator 4 for heating. On the other hand, at the time of reheating the bath, the circulation pump 6 for heating, which is driven by an electric motor, is driven to feed the high-temperature water obtained by the heat exchanger 4 for heating to the hot water tank 11, and at the same time, the reheating of the bath, which is driven by the electric motor, is performed. By operating the circulation pump 16 for water, the water in the bathtub 14 becomes high-temperature water in the reheating heat exchanger 18 built in the hot water storage tank 11 containing high-temperature water, and the bathtub 1
It is sent to No. 4 and heated by heating it in sequence.

[0004]

However, in the above-mentioned conventional configuration, the heating and the bath are of one-can-two-water type, and the circulation pump 6 for heating and the circulation pump 16 for bath reheating at the time of additional heating.
Will drive both. Both use a pump driven by an electric motor. Therefore, the initial cost is high, the size is large, the weight is large, and
There were issues such as high running costs.

The present invention is intended to solve the above-mentioned problems, and an electric motor-less bath reheating circulation driven by high-temperature water (fluid) fed by a heating circulation pump driven by an electric motor in a hot water supply / heating bath apparatus. a pump is provided, above
In addition to solving the above problems, it works in conjunction with the circulation pump for heating.
The circulation pump for reheating the bath is
To improve reliability, keep the driven impeller idle and
Its primary purpose is to prevent it from rolling.
is there.

Further, in the one-can-two-water type heating circuit, a hot water storage tank for feeding high-temperature water from a circulation pump is eliminated, and a replenishment water tank is provided with the above-mentioned reheating heat exchanger incorporated therein, thereby reducing the size and weight. This is the second purpose.

[0007]

In order to achieve the first object, the present invention provides a makeup water tank, a circulation pump for heating,
A circulation path is formed by the heat exchanger for heating and the radiator for heating.
The heating system includes a one-can-two-water heating circuit having a hot water storage tank in parallel with the heating radiator, and a bath reheating circuit that circulates a bathtub and a reheating heat exchanger built in the hot water storage tank. A fluid driven impeller and a bypass pipe having a solenoid valve are arranged in parallel in the circuit, and a driven impeller provided in the bath reheating circuit and the fluid driven impeller are communicatively connected to each other. It is provided with a circulating pump for heating.

Further, in order to achieve the second object, a circulation path is formed by a makeup water tank containing a heat exchanger for reheating, a circulation pump for heating, a heat exchanger for heating, and a radiator for heating. A one-can-two-water type heating circuit having a bypass forward pipe, a bypass valve, and a bypass return pipe in parallel with the heating radiator, and a bath reheating circuit that circulates a bathtub and the reheating heat exchanger. In the heating circuit, a bypass pipe having a fluid-driven impeller and a solenoid valve is arranged in parallel,
A driven impeller provided in the reheating circuit and a bath reheating circulation pump that is communicatively connected to the fluid driven impeller are provided.

[0009]

According to the present invention, according to the first structure of the present invention, when the bath is reheated, high-temperature water (fluid) sent by the circulation pump for heating which drives the heating and is driven by the electric motor is used for the heating outward pipe. The fluid driven impeller provided in the system is rotated at high speed. At the same time, the driven impeller provided in the reheating forward pipe system path in the magnetic coupling state through the partition wall body rotates at a high speed, thereby fulfilling the function of the reheating circulation pump. As a result, the bath is reheated in sequence. Next
When the heating is operated independently, it is sent by the circulation pump for heating.
High-temperature water (fluid) is a bypass pipe equipped with an open solenoid valve.
Fluid drive impeller to flow etc. photons side is Do rotated at a high speed
As a result, the driven impeller does not rotate at high speed.
The circulation pump for reheating the bath does not operate.

Further, the second means is that when hot water is reheated in the bath, high-temperature water from the heating circulation pump is fed to the heating forward pipe, bypass forward pipe, bypass valve, bypass return pipe, heating return pipe, makeup water tank. It is circulated in order. At this time, heat is exchanged with high-temperature water for the reheating heat exchanger built in the makeup water tank.

[0011]

Embodiments of the present invention will be described below with reference to FIGS.

In FIG. 1 to FIG. 2, the hot water supply / heating bath device 1 forms a circulation system path by a makeup water tank 2, a heating outward pipe 3, a heating radiator 4, and a heating return pipe 5 to form a system of the heating outward pipe 3. A circulation pump 6 for heating, a heat exchanger 7 for heating, and a control valve 8 are disposed in the passage, and a bypass outward pipe 9, a bypass valve 10, a hot water storage tank 11 are provided between the heating heat exchanger 7 and the control valve 8. The bypass return pipe 12 is sequentially arranged and connected to the heating return pipe 5, and the heating circuit 1 is connected.
3, a fluid drive impeller 21 is provided in the system path of the heating outward pipe 3. The bath reheating circuit 20 is the bathtub 14
Against reheating forward pipe 15, solenoid valve 17, hot water storage tank 1
The heat exchanger 18 for reheating and the reheating tube 19 built in 1 are arranged in this order to form a circulation path, and a driven impeller 24 is provided in the system path of the reheating forward tube 15 to drive the fluid. A bath-heating circulation pump 28 is provided which is coaxially connected to the impeller 21 via a partition wall 26 via a magnet coupling 27 so as to be able to be transmitted.

Further, the makeup water tank 2 is connected to a water supply pipe 30 having an electric valve 29 and is provided with a water level sensor 31. The hot water supply circuit 32 is provided by arranging a water supply pipe 30, a hot water heat exchanger 33, and a hot water supply pipe 34 in this order, and branches the hot water supply pipe 34. One of them is a hot water tap 35, the other is an electric valve 36, a check valve A37,
The three-way valve 40 is connected via a hopper 38 and a check valve B39. The other side of the three-way valve 40 is the reheating forward pipe 15
Is connected to the middle of the electromagnetic valve 17 and the bathtub 14 provided in the system path.

In the above configuration, the heating operation alone will be described. The low-temperature water from the makeup water tank 2 is sucked by the heating circulation pump 6 and sent to the heating heat exchanger 7 to become high-temperature water by heating, and heating is performed via the open control valve 8 provided in the heating outward pipe 3. It is sent to the heat radiator 4 to raise the room temperature and heat the room. Then, the low temperature water after heat exchange is sent to the makeup water tank 2 via the heating return pipe 5. The heating circuit 13 is circulated and heated until the temperature of the room where the radiator 4 for heating is installed reaches a desired temperature. At this time, the solenoid valve 17 provided in the system path of the reheating forward pipe 15 is closed, and the bath reheating circuit 20 does not circulate and heat. Further, the bypass valve 10 provided in the bypass outward pipe 9 taken out from the heating outward pipe 3 is in a closed state, and high temperature water is not sent to the hot water storage tank 11. Further, the heating operation is stopped by first stopping the heating circulation pump 6 and then closing the control valve 8.

Next, a description will be given of the case where the bath alone is in the reheating operation. The low-temperature water from the makeup water tank 2 is sucked by the circulation pump 6 for heating and sent to the heat exchanger 7 for heating to become high-temperature water by heating, which is sent to the fluid-driven impeller 21 provided in the heating outward pipe 3 to rotate at high speed. Then, it is sent to the hot water storage tank 11 via the bypass outward pipe 9 having the bypass valve 10 in the open state. At this time, the solenoid valve 17 is in the open state and is coaxial with the fluid-driven impeller 21 rotating at high speed.
The driven impeller 24, which is communicatively coupled by the magnetic coupling 27 through the partition wall 26, rotates at a high speed, and the bath-fired circulation pump 28 rotates the bath 14
The lower temperature water is reheated and sucked through the three-way valve 40 by the forward pipe 15. Then, the hot water is sent to the reheating heat exchanger 18 contained in the hot water storage tank 11 containing the high temperature water and exchanges heat with the hot water stored therein to send the high temperature water to the bathtub 14 via the reheating recuperation pipe 19. Then, the bath reheating circuit 20 is circulated and heated until the hot water temperature of the bathtub 14 reaches a desired temperature. Furthermore, the control valve 8 provided in the heating outward pipe 3
Is closed and high-temperature water is not fed to the heating radiator 4. To stop the bath reheating operation, first, the heating circulation pump 6 is stopped, and then the bypass valve 10 and the solenoid valve 17 are closed.

Next, the simultaneous use of heating and bath reheating will be described. First, during the simultaneous operation of heating and bath reheating, high-temperature water from the heating circulation pump 6 is sent to the fluid-driven impeller 21, and both the control valve 8 and the bypass valve 10 are in the open state, and each is for heating. High-temperature water is sent to the radiator 4 and the hot water storage tank 11. At this time, the solenoid valve 17
Is open. This allows them to work simultaneously. Then, when the heating operation is continued from this state and only the bath reheating operation is stopped, the solenoid valve 17 is closed and the bypass valve 10 is closed. Further, when the bath reheating operation is continued from this state and only the heating operation is stopped, the control valve 8 is simply closed. Further, when both are stopped, the heating circulation pump 6 is stopped first, and then the bypass valve 10, the control valve 8 and the electromagnetic valve 17 are closed.

Next, the refueling circulation pump 28 has a self-priming function. That is, at the time of operation when there is no hot water or water in the bathtub 14, the hot water obtained in the hot water supply circuit 32 is passed through the three-way valve 40 driven impeller 24, the reheating heat exchanger 18, and the reheating recuperator 19. It is sent to the bathtub 14 and stopped at a preset amount of hot water. At this time, the reheating circulation pump 28 constituted by the driven impeller 24 is provided with a water (hot water) reservoir portion on the driven impeller 24 side (not shown). As a result, the self-priming function is fulfilled in the subsequent operation of the reheating circulation pump 28.

According to the present embodiment, the bath-pumping circulation pump 28 has no electric motor and two impellers as compared with the conventional electric motor type pump composed of an electric motor and one impeller. You're done. Therefore, (1) the initial cost can be reduced. (2) The size of the pump is small. (3) The weight can be reduced, and the heating circulation pump 6 needs to be slightly powered up in order to drive the fluid-driven impeller. However, the running cost can be reduced because only one electric motor is required. is there.

The difference between the second embodiment shown in FIG. 3 and the first embodiment shown in FIG. 1 is that the solenoid valve 17 provided in the reheating forward pipe 15 is eliminated and the system line of the heating forward pipe 3 is eliminated. That is, the bypass pipe 23 having the solenoid valve 22 is arranged in parallel with the fluid drive impeller 21 provided in the above. Everything else is exactly the same.

In the above-mentioned structure, description will be given from the time of independent heating operation. Low-temperature water from the makeup water tank 2 is sucked by the circulation pump 6 for heating and sent to the radiator 4 for heating to be high-temperature water by heating, and the bypass pipe 23 having the solenoid valve 22 in the open state provided in the heating outward pipe 3 is provided. It is sent to the radiator 4 for heating via the control valve 8 in the open state to raise the room temperature and heat the room. The heating circuit 13 is circulated and heated until the temperature in the room where the heating radiator 4 is installed reaches a desired temperature. At this time, the resistance is large on the side of the fluid driven impeller 21 provided in parallel with the bypass pipe 23, and almost no flow occurs. Therefore, since the driven impeller 24, which is connected to the coaxial 25 via the partition wall 26 so as to be transmittable by the magnet coupling 27, does not rotate at high speed, the bath-heating circulation pump 28 is not driven. Furthermore, heating outflow pipe 3
Bypass valve 10 provided in the bypass outward pipe 9 taken out from
Is closed and high-temperature water is not sent to the hot water storage tank 11. To stop the heating operation, first, the circulation pump 6 for heating is stopped and then the control valve 8 is closed.

Next, a description will be given of the operation of reheating the bath alone. The low-temperature water from the makeup water tank 2 is sucked by the heating circulation pump 6 and sent to the heating radiator 4 to be heated to high-temperature water, which is sent to the fluid-driven impeller 21 provided in the heating outward pipe 3 to rotate at high speed. After that, the bypass valve 1 in the open state
It is sent to the hot water storage tank 11 via the bypass forward pipe 9 having 0. At this time, the driven impeller 24, which is connected to the fluid driven impeller 21 that is rotating at high speed and is coaxially 25 and is transmissibly connected by the magnet coupling 27 via the partition wall body 26.
Circulation pump 28 for bath reheating that will rotate at high speed
Then, low temperature water is reheated from the bathtub 14 and sucked through the three-way valve 40 by the forward pipe 15. Then, the hot-water recuperating pipe 19 is exchanged with the high-temperature water stored in the hot-water-heating heat exchanger 18 built in the hot-water storage tank 11 containing the high-temperature water.
High temperature water is sent to the bathtub 14 via. Then, the bath reheating circuit 2 is used until the hot water temperature of the bathtub 14 reaches a desired temperature.
0 is circulated and heated. Further, the control valve 8 provided in the heating outward pipe 3 is in the closed state, and high temperature water is not sent to the heating radiator 4. To stop the bath reheating operation, first, the heating circulation pump 6 is stopped, and then the bypass valve 10 is closed.

Next, the simultaneous use of heating and bath reheating will be described. First, during the simultaneous operation of heating and bath reheating, high-temperature water from the heating circulation pump 6 is sent to the fluid-driven impeller 21, and both the control valve 8 and the bypass valve 10 are in the open state, and each heat radiates heat. High-temperature water is sent to the container 4 and the hot water storage tank 11. At this time, bypass pipe 2
The solenoid valve 22 of No. 3 is closed. This allows them to work simultaneously.

From this state, when the heating operation is continued and only the bath reheating operation is stopped, the solenoid valve 22 of the bypass pipe 23 is opened and the bypass valve 10 is closed. Further, when the bath reheating operation is continued from this state and only the heating operation is stopped, the control valve 8 is simply closed. Further, when both are stopped, the heating circulation pump 6 is stopped first, and then the electromagnetic valve 22, the bypass valve 10 and the control valve 8 are closed.

As described above, according to the second embodiment, as shown in FIG.
The same effect as that of the first embodiment can be obtained, and further, the bath-burning circulation pump 28 driven by high-temperature water for heating is driven by the fluid-driven impeller 21 that is rotating at high speed during the independent heating operation. Although the vehicle 24 is idle, the vehicle 24 is not driven because the solenoid valve 17 of the refueling forward pipe 15 is closed. However, in order to further increase the reliability, it is necessary to eliminate the idle operation of the driven impeller 24 and not operate the bath reheating circulation pump 28. Therefore, the solenoid valve 17 provided in the middle of the reheating forward pipe 15 is abolished and the difference in pressure loss of the pipeline is utilized. That is, the high-temperature water sent from the heating circulation pump 6 has a smaller pressure loss on the side of the bypass pipe 23 provided with the opened solenoid valve 22 than on the side of the fluid-driven impeller 21 and therefore almost flows through this. Therefore, the fluid driven impeller 2
Since 1 hardly flows, it does not rotate and the driven impeller 24
Also, the bath-heating circulation pump 28 does not operate without rotating. Therefore, there is an effect that the more reliable bath reheating circulation pump 28 can be provided.

Further, the difference between the third embodiment shown in FIG. 4 and the second embodiment shown in FIG. 3 is that the reheating heat exchanger 18 is built in the hot water storage tank 11 provided in the middle of the heating circulation path. In contrast to the above configuration, the hot water storage tank 11 is eliminated and the reheating water heat exchanger 18 is built in the makeup water tank 2.
Everything else is exactly the same.

In the above configuration, the heating only operation will be described. The circulation heating in the heating circuit 13 and the operation of the bath reheating circulation pump 28 are exactly the same as those in the second embodiment shown in FIG. Then, the bypass valve 10 provided in the bypass outward pipe 9 taken out from the heating outward pipe 3 is in a closed state, and high temperature water does not bypass. The same applies to stopping the heating operation.

Next, a description will be given of the case where the bath alone is in the reheating operation. Obtaining high-temperature water by circulating heating in the heating circuit 13 is exactly the same as that of the second embodiment of FIG. 3, except that the high-temperature water is exchanged by the reheating heat exchanger 18 built in the hot water storage tank 11. Instead of exchanging heat, heat is exchanged with the built-in reheating heat exchanger 18 by the high-temperature water sent to the makeup water tank 2, and the heat is sent to the bathtub 14 via the reheating tube 19. Then, the bath reheating circuit 20 is circulated and heated until the hot water temperature of the bathtub 14 reaches a desired temperature.

The operation is the same as that of FIG. 3 when the heating and the bath reheating are simultaneously used.

As described above, according to the third embodiment, as shown in FIG.
The same effects as those of the first embodiment of the present invention and the second embodiment of FIG. 3 are obtained, and further, the hot water storage tank 11 having the built-in reheating heat exchanger 18 therein is not provided in the heating system path. If possible, further miniaturization and cost reduction can be achieved. Therefore, the makeup water tank 2 in the heating circuit 13 is utilized. That is, the make-up water tank 2 is made slightly larger and the reheating water heat exchanger 18 is built in the make-up water tank 2. As a result, the additional heating tube 15 and the additional heating tube 1
Although 9 is a little longer and the position of the makeup water tank 2 is higher than the position of the hot water storage tank 11 up to now, although the lift of the bath reheating circulation pump 28 is slightly increased,
There is an effect that the hot water storage tank 11 is not required and the size and cost are reduced.

[0030]

As described above, the hot-water supply / heating bath device of the present invention is a fluid-driven impeller that is driven by high-temperature water sent from the circulation pump for heating at the time of reheating the bath to rotate at high speed, and thereby rotates at high speed. It is circulated and heated by a circulation pump for reheating the bath, which is composed of a driven impeller. In other words, the bath-fired circulation pump is electric motorless and requires only two impellers as compared with the conventional electric motor type pump that is composed of an electric motor and one impeller.

Therefore, (1) the initial cost can be reduced. (2) The size of the pump is small.
(3) The weight can be reduced. (4) Wiring is eliminated, reducing man-hours. Further, to drive the fluid driven impeller,
It is necessary to power up the circulation pump for heating a little, but the running cost will be lower than that with only one electric motor.

Further, the high-temperature water sent from the circulation pump for heating almost flows through the bypass pipe side provided with the opened solenoid valve having a smaller pressure loss than the fluid-driven impeller side in the system passage. As a result, the fluid-driven impeller side hardly flows, so that it does not rotate, the driven impeller does not rotate, and the bath-fired circulation pump does not operate. Therefore, it is possible to provide a more reliable bath reheating circulation pump in which the driven impeller does not run idle.

Further, in the second invention, the make-up water tank in the heating circuit is made slightly larger and a heat exchanger for reheating is built in this tank. As a result, the reheating forward pipe and the reheating recuperation pipe become a little longer, and the position of the makeup water tank is slightly higher than the position of the hot water storage tank so far, so the lift of the bath reheating pump is slightly increased. However, miniaturization and cost reduction can be realized by eliminating the hot water storage tank.

[Brief description of drawings]

FIG. 1 is a system configuration diagram of a hot-water supply / heating bath device according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of a circulation pump for reheating a bath in the above device.

FIG. 3 is a system configuration diagram of a hot water supply / heating bath device according to a second embodiment of the present invention.

FIG. 4 is a system configuration diagram of a hot water supply / heating bath device according to a third embodiment of the present invention.

[Fig. 5] System configuration diagram of a conventional hot-water supply / heating bath device

[Explanation of symbols]

2 makeup water tank 4 Heat radiator 6 Circulation pump for heating 7 Heating heat exchanger 9 Bypass forward 10 Bypass valve 11 Hot water storage tank 12 Bypass recovery 13 heating circuit 14 bathtub 18 Heat exchanger for reheating 20 bath reheating circuit 21 Fluid driven impeller 22 Solenoid valve 23 Bypass pipe 24 driven impeller 28 Circulation pump for bath reheating

Continuation of the front page (56) Reference JP-A-4-295540 (JP, A) JP-A-63-6339 (JP, A) JP-A-2-157537 (JP, A) Actual development Sho-61-66716 (JP , U) Actually open 1-153415 (JP, U) Actually open 62-12412 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) F24D 3/08

Claims (2)

(57) [Claims] 1. A one-can-two-water type having a makeup water tank, a heating circulation pump, a heating heat exchanger, and a heating radiator forming a circulation path, and having a hot water storage tank in parallel with the heating radiator. A heating circuit, and a bath reheating circuit that circulates a reheating heat exchanger built in the bathtub and the hot water storage tank, wherein a fluid-driven impeller and a bypass pipe having a solenoid valve are arranged in parallel in the heating circuit. A hot water supply / heating bath device having a bath reheating circulation pump, which is disposed in the reheating circuit and is connected to the driven impeller provided in the reheating circuit and the fluid driven impeller so as to be able to be transmitted. 2. A make-up water tank having a built-in heat exchanger for reheating, a circulation pump for heating, a heat exchanger for heating, and a radiator for heating form a circulation path, which is bypassed in parallel with the radiator for heating. A one-can-two-water heating circuit having a forward pipe, a bypass valve, and a bypass return pipe, and a bath reheating circuit that circulates in a bathtub and the reheating heat exchanger, wherein the heating circuit is fluid-driven. A bypass pipe having an impeller and a solenoid valve is arranged in parallel, and a driven impeller provided in the reheating circuit and a bath reheating circulation pump that is communicably connected to the fluid driven impeller are provided. Hot water supply and heating bath equipment.