JPH0593522A - Hot water making device of hot water storage type - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain a hot water storage type water heater that can easily supply hot water to a bath in addition to a shower or general use. [Constitution] The water supply pipe 20 for supplying water to the hot water storage tank 2 is provided with a branch point 21, another water supply pipe 23 is connected thereto, and the tip of this water supply pipe 23 is projected to the outside of the case 1 to supply water to the outside of the case 1. A hot water supply pipe 24 connected to the upper portion of the hot water storage tank 2 is provided with a branch point 25, another hot water supply pipe 27 is connected to the hot water supply pipe 24, and the tip of the hot water supply pipe 27 is connected to the case 1
A hot water supply port 27a is provided outside the case 1 so as to project to the outside. [Effect] The hot water supply unit for bath 32 having an automatic hot water filling function can be easily connected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water storage type water heater.

[0002]

2. Description of the Related Art FIG. 5 is a sectional view showing the outline of the configuration of a conventional hot water storage type water heater of this type. In the figure, 1 is a case that covers the whole, 2 is a hot water storage tank, 3 is a water supply pipe connected to an external water supply pipe 10, 4 is a pressure reducing valve for keeping a constant water pressure, and 5 and 7 are pressure reducing valves 4. A water supply pipe for supplying water to the hot water storage tank 2, 6 is a branch pipe (so-called cheese), and the water supply pipe 5
A water supply pipe 7 located at a position orthogonal to is connected to the branch pipe 6, and a water supply pipe 8 connected to an external water supply pipe 11 is connected to the branch pipe 6. Reference numeral 13 is a water valve connected to the external water supply pipe 11, 9 is a hot water supply pipe connected to the upper part of the hot water storage tank 2 for collecting hot water from the hot water storage tank 2, and the hot water supply pipe 9 is connected to the external hot water supply pipe 12. Hot water is supplied to the valve 14. Also,
Reference numeral 15 denotes a shower head having a water valve 13 and a hot water valve 14.

Next, the operation will be described. Hot water storage tank 2
When the hot water inside is used as a shower, by opening the hot water valve 14, the water inside the hot water storage tank 2 is depressurized, and the water having a constant pressure is pumped through the external water supply pipe 10 and the water supply pipe 3 through the pressure reducing valve 4. Water is supplied from the bottom of the hot water storage tank 2 into the tank through the water supply pipe 5, the branch pipe 6, and the water supply pipe 7. Then, the hot water in the upper portion of the hot water storage tank 2 is pushed out by this water supply pressure, and the hot water is discharged from the shower head 15 through the hot water supply pipe 9 and the external hot water supply pipe 12.

When it is desired to discharge only the water from the shower head 15, the water valve 13 is opened so that the water having a constant pressure is pumped through the external water supply pipe 10 and the water supply pipe 3 through the pressure reducing valve 4. The water is discharged from the shower head 15 through the water supply pipe 5, the branch pipe 6, the water supply pipe 8, and the external water supply pipe 11. Further, when it is desired to discharge the mixed hot water in which the hot water and the water are mixed, it is sufficient to open both the water valve 13 and the hot water valve 14 appropriately, and the mixed hot water in which the hot water and the water are mixed in the above-described flow. Are emitted from the shower head 15.

[0005]

Since the conventional hot water storage type water heater as described above is configured as described above, it is convenient when used in a hot water supply device for a shower.
There was a problem that it was difficult to connect the hot water supply unit for the bath, and it was difficult to supply hot water to the bath.

The present invention has been made to solve the above problems, and facilitates connection of a hot water supply unit for a bath with a simple structure and facilitates hot water supply to a bath in addition to showers and general applications. The purpose is to obtain a hot water storage type hot water heater.

[0007]

In the hot water storage type water heater according to the present invention, a branch point 21 is provided in a water supply pipe 20 for supplying water to the hot water storage tank 2, and another water supply pipe 23 is connected to the branch point 21. The tip of 23 is projected outside the case 1 to provide a water supply port 23a outside the case 1, and a hot water supply pipe 24 connected to the upper part of the hot water storage tank 2 is provided with a branch point 25 to which another hot water supply pipe 27 is connected. The tip of the hot water supply pipe 27 is projected to the outside of the case 1 to provide a hot water supply port 27a outside the case 1.

[0008]

In the hot water storage type water heater constructed as described above, the hot water supply unit for bath can be easily connected without impairing the conventional function.

[0009]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing the outline of the configuration of a hot water storage type water heater which is an embodiment of the present invention. In the figure, 1 is a case covering the entire water heater, 2 is a hot water storage tank, and 3 is an external water supply pipe. 10 is a water supply pipe branched and connected, 4 is a pressure reducing valve for maintaining a constant water pressure, 20 is a water supply pipe connected to this pressure reducing valve 4, and this water supply pipe 20 is branched at a branch point 21, A water supply pipe 22 connected to the water supply pipe 7 at 6a and directed to the hot water storage tank 2, and a water supply pipe 23 that extends to the outside of the case 1 as it is, and has a tip (water supply port) 23a with a thread for piping protruding outside the case 1 And parted.

Reference numeral 24 denotes a hot water supply pipe connected to the upper part of the hot water storage tank 2 for collecting hot water from the hot water storage tank 2.
Is branched at a branch point 25 and extends to the outside of the case 1 as it is with the hot water supply pipe 26 connected to the external hot water supply pipe 12, and a screwed tip (hot water supply port) 27a for piping is projected to the outside of the case 1 It is separated from the hot water supply pipe 27. Further, 13 is a water valve, 14 is a hot water valve, 15 is a shower head, and 16 is a faucet. The water valve 13, hot water valve 14, shower head 15, and faucet 16 constitute a hot and cold water mixing valve. 29 is a cap which is closed when the water supply port 23a is not used, and 30 is a cap which is closed when the hot water supply port 27a is not used.

FIG. 2 is a sectional view showing a state in which a hot water supply unit for bath is connected to the hot water storage type water heater shown in FIG. 1. In the figure, 31 is a bathtub, 32 is a hot water supply unit for bath, and 33 is a control box. In the hot water supply unit 32 for bath, 34 is an electric mixing valve for automatically mixing hot water and water by an electric signal to obtain an appropriate temperature, 35 is a water supply pipe connecting the water supply port 23a and the electric mixing valve 34, 36 Is a hot water supply pipe that connects the hot water supply port 27a and the electric mixing valve 34, 37 is a solenoid valve that opens and closes a water circuit in the hot water supply unit 32 for bath, 38 is a conduit that connects the electric mixing valve 34 and the solenoid valve 37, 39 Is a solenoid valve 37
A water level sensor 40 for detecting the level of the liquid surface of the bath 31 is installed in the conduit 39. 41 is a power plug, 42 is a power cable for supplying power to the control box 33,
Reference numeral 43 is a signal cable for sending signals for controlling the electric mixing valve 34, the electromagnetic valve 37, and the water level sensor 40 from the control box 33.

Next, the operation will be described. Hot water storage tank 2
When using the hot water in the inside, by opening the hot water valve 14, the inside of the hot water storage tank 2 is depressurized and the water having a constant pressure is pumped through the external water supply pipe 10 and the water supply pipe 3 through the pressure reducing valve 4, Water is supplied from the bottom of the hot water storage tank 2 into the tank through the water supply pipes 20, 22, and 7. Then, the hot water in the upper part of the hot water storage tank 2 is pushed out by this water supply pressure, and the hot water supply pipe 2
Hot water is discharged from the shower head 15 or the faucet 28 through the external hot water supply pipes 4, 26.

When only water is required, the water valve 13 is opened so that the water that does not branch from the external water supply pipe 10 to the hot water storage tank 2 is discharged directly from the shower head 15 or the faucet 28. Further, when it is desired to discharge the mixed hot water in which the hot water and the water are mixed, the water valve 13 and the hot water valve 1
It is only necessary to open both 4 and 4 appropriately, and the mixed hot water in which hot water and water are mixed is discharged from the shower head 15 or the faucet 28 in the above-described flow.

Next, the hot water supply to the bathtub will be described. When pouring hot water into the bathtub 31, by setting a desired hot water temperature in the control box 33, the electric mixing valve operates via the signal cable 43, and then the solenoid valve 37.
Open and the mixed water of the desired temperature passes through the conduit 39 to the bath 31
Flow to. The water level of the bathtub 31 is monitored by the water level sensor 40, and when hot water of a predetermined water level is filled in the bathtub 31, a signal from the water level sensor 40 causes a control box 33
Operates the solenoid valve 37 to stop hot water supply to the bathtub 31. As described above, it is possible to automatically supply hot water to the bathtub 31 at an appropriate temperature and in an appropriate amount.

Example 2. In addition, although the hot water storage tank having one can of hot water storage tank is described in the above embodiment, a hot water storage water heater having two cans of hot water storage tank has the same effect. 3 and 4 are views for explaining a case where the hot water storage tank is implemented in a hot water storage type water heater having two cans, respectively.
The same reference numerals as those in FIG. 2 denote the same parts, 2A and 2B denote hot water storage tanks, and 44 denotes a conduit connecting the upper part of the hot water storage tank 2A and the bottom part of the hot water storage tank 2B.

[0016]

As described above, according to the present invention, a water supply port and a hot water supply port can be provided outside the case with a simple structure, and a hot water supply unit for a bath having an automatic hot water filling function can be easily connected. Further, there is an effect that it can be used as a general water heater without any problem.

[Brief description of drawings]

FIG. 1 is a cross-sectional view schematically showing the configuration of a hot water storage type water heater which is an embodiment of the present invention.

FIG. 2 is a sectional view showing a state in which a hot water supply unit for bath is connected to the water heater shown in FIG.

FIG. 3 is a sectional view showing the outline of the configuration of a hot water storage type water heater which is another embodiment of the present invention.

FIG. 4 is a cross-sectional view showing a state in which a hot water supply unit for bath is connected to the water heater shown in FIG.

FIG. 5 is a sectional view showing an outline of a configuration of a conventional hot water storage type water heater.

[Explanation of symbols]

 20,22,23 Water supply pipe 24,26,27 Hot water supply pipe 21,25 Branching point 23a Water supply port 27a Hot water supply port 28 Faucet 31 Bathtub 32 Bath water supply unit 33 Control box 40 Water level sensor

Claims (1)

[Claims] 1. A hot water storage type water heater in which a hot water supply pipe for supplying water into the hot water storage tank and a hot water supply pipe for supplying hot water from the hot water storage tank to the hot water valve are provided in the case. A branch point 21 is provided in the water supply pipe 20 for performing the above, and another water supply pipe 23 is connected to this, and a means for projecting the tip of this water supply pipe 23 to the outside of the case 1 to form a water supply port 23a is connected to the upper part of the hot water tank 2. Branch point 25 on the hot water supply pipe 24
Is provided and another hot water supply pipe 27 is connected to this hot water supply pipe 2
A means for projecting the tip of 7 to the outside of the case 1 to form a hot water supply port 27a, the water supply port 23a and the hot water supply port 27a are connected to a water supply pipe 35 and a hot water supply pipe 36 in the unit, and a bath hot water supply unit is connected. A hot water storage type water heater characterized by comprising: