JPS5918613B2 - Hot water supply device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a hot water supply device, more specifically, a hot water supply device that mixes hot water and cold water at an appropriate temperature (for example, 45 to 50°C) using a mixing faucet.
This invention relates to a hot water supply device that can maintain hot water at a constant temperature and obtain a large amount of hot water.

If you use only an instantaneous water heater to obtain hot water, as in the past, you will not be able to obtain a large amount of hot water at an appropriate temperature, as this will raise the temperature of the hot water with a reduced capacity.

In addition, when a hot water storage type water heater uses almost as much hot water as the stored amount of hot water, the temperature of the hot water drops and it takes time to heat up and raise the temperature, making it impossible to obtain hot water continuously at any time.

In other words, since the size of the hot water tank is fixed, there is a limit to the amount of hot water that can be stored.

The present invention solves these problems.

That is, the hot water supply device of the present invention includes a water supply device, a hot water storage device, and a heating device, and one side of pressurized cold water from the water supply device is piped to reach the cold water frame, and exits from the bottom of the hot water storage device and passes through the temperature controller. The water supply pipe is connected to the high temperature frame by branching from the middle of the pipe that exits from above the hot water storage device through the provided heating device and pump, exits from the bottom of the hot water storage device, and joins the pipe leading to the heating device. The other pressurized cold water from the device is characterized in that it is connected to a pipe that exits from below the hot water storage device and reaches the heating device.

The invention will be described in detail below with reference to the illustrative drawings.

As shown in FIG. 1, the present invention includes a water supply device 7, ie, means for pressurized water supply with small pressure changes, a hot water storage device 2, ie, a hot water storage tank, and a heating device 1, ie, a water heater for heating circulating hot water.

In the figure, numeral 3 indicates a mixing faucet, such as a hair washer, 11 a piping kit, 12 a main pipe connecting a water supply device, a hot water storage device, a heating device, and a mixing faucet pipe, and 13 a drainage pipe.

■ First, regarding the supply of cold water to the mixing faucet, the cold water supplied from the water supply pipe 6 to the water supply device 7 is pressurized from point 20 using a pump 8, for example, a centrifuge pump, which has a small pressure change when the flow rate increases. and one is points 21, 22, 23
24.25 or via a pipe passing through point 26 in addition to these points, the cold water tap 3' is directly reached (see arrow C in the figure), and pressurized cold water is supplied thereto.

Note that 15 is a check valve.

＠ Regarding the supply of high-temperature hot water to the mixing faucet, the high-temperature hot water stored in the hot water storage device 2 is supplied to the upper part of the hot water storage device 3.
Points 31, 32, 33° from 0 34.35, 36, 3
7, 38 (see arrow H in the figure), points 40, 41, point 42° described in O below, point 43 (see arrow M in the figure), point 50.5
1 (see arrow M' in the figure) and points 52, 53, 54, 55
56.57 (see arrow R in the figure) and returns to the lower part 58 of the hot water storage device 2 through a series of pipes.

The pump 4 is used for this circulation and is constantly operated while the hot water supply device is in use.

Note that the piping passing through points 50 and 51 is a heating piping for the heating device 1.

Furthermore, 5 is a temperature regulator which will be described later, 10 is a check valve, and 16 is a three-way valve.

The piping of the circuit branches at points 36 and 37 in the middle to supply hot water to the hot water tap 3''.

θ Therefore, hot water at the desired temperature can be obtained by mixing the hot water (@) above and the cold water (A) above.

Number 3 in the figure is this mixer faucet.

■ Replenishment of cold water instead of high-temperature hot water used The other side of the pressurized cold water that comes out of the water supply device 70 point 20 mentioned in (■) and is pressurized by the water supply pump 8 and reaches points 21, 22° 23 is It branches off at point 23, passes through check valve 9, and reaches point 60 (
(see arrow C' in the figure), is divided into two here, and one is at the point 61.
．． 62 to point 63 below the hot water storage device (see arrow σ' in the figure), and the other one is connected to point 42 mentioned in ◎ above.
It is piped to connect to.

(Referring to the arrow C'''' in the figure, when hot water is used, cold water is replenished into the hot water storage device 2. In this case, as shown above, when the amount of hot water used is small, points 60, 42, 43゜50
．． 51, 52, 53, 54, 55, 56゜57.58 If the amount of hot water used is large, add point 6 to the above.
It also reaches the hot water storage device via piping passing through 0, 61, 62, and 63.

(2) Therefore, the hot water or water in the hot water storage device 2 and the piping connected thereto is always in a pressurized state.

Also, the low temperature hot water or water below the hot water storage device 2 after replenishing the cold water is
Due to the action of pump 4 described in , points 63, 62, 61, 6
The hot water enters the heating device 1 through points 0, 42, and 43, is heated, and becomes ready to return to point 58 of the hot water storage device.

θ - Replenishment of cold water and natural heat for the high temperature water used 9 Heating of low temperature water Natural heat dissipation of high temperature hot water (natural heat dissipation of high temperature piping outside the hot water storage device)
Or, when the temperature of the heating device 1 falls below a predetermined temperature due to replenishment of cold water, the heating gas in the heating device 1 is ignited by the action of the temperature regulator 5, and the heating gas is heated by the piping passing through the points 50 and 51 in the heating device 1. Points 52, 53, 54, 55, 56°5
The hot water is sent to the hot water storage device 2 via the pipe passing through 7.58.

This is done by detection by the temperature controller 5 until the temperature of the hot water in the heating device 1 reaches a predetermined temperature, and when the temperature reaches the predetermined temperature, the gas (other than the pilot flame) in the heating device is extinguished.

(2) As mentioned in (2) above, a constant pressure is constantly applied to the interior of the hot water storage device 2 and the piping connected thereto by the water supply device pump 8 to maintain an equilibrium state.

The high-temperature hot water H and the low-temperature hot water or water in the hot water storage device 2 do not mix, but are layered with high-temperature hot water in the upper layer and low-temperature hot water or water in the lower layer, with the boundaries of the layers rising and falling.

Therefore, hot water can be continuously taken out from the piping from point 30 above the hot water storage device.

In order to promote the formation of the above layer (d.
When a large amount of low-temperature hot water returns at once, it causes an agitation effect, so the reflux groove (exiting from point 30 above the hot water storage device mentioned above,
For example, a thin section of piping between points 40 and 41, or an adjustable orifice or the like is provided in front of the check valve 10.

In the description of the present invention, a pump is used to pressurize the cold water, but instead of this, a pressure reducing valve may be provided, for example, a plurality of pressure reducing valves in parallel to pressurize the cold water.

Figure 2 shows this.

In FIG. 2, 6 indicates a water supply pipe, 7' indicates a water supply device, and 14 indicates a pressure reducing check valve.

The present invention as described above uses a heating device to instantaneously raise the temperature of the water used to replenish the low-temperature hot water taken out of the hot water storage device and returns it to the hot water storage device to store high-temperature hot water and use a large amount of it at once. This eliminates the disadvantages of instantaneous water heaters, which raise the temperature quickly but the amount of hot water is small, and hot water storage type water heaters, which have a large amount of hot water but do not reach a high temperature, and makes use of the advantages to fully satisfy the requirements listed at the beginning. That's what I got.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of the hot water supply device of the present invention, and Fig. 2 is a water supply device according to the present invention using another example of pressurizing means in which the pressure changes little as the flow rate increases to pressurize cold water. is exemplified. 1... Heating device, 2... Hot water storage device, 3
...Mixing faucet, 3'...Cold water frame, 3
"...High temperature hot water frame, 4...Circulation pump, 5...Temperature controller, 6...Water supply pipe, 7, 7'... ...Water supply device, 8...Pump for water supply device with little pressure change with respect to increase in flow rate, 9,
10... Check valve, 11... Piping kit, 12... Main piping, 13... Drainage piping, 14... Pressure reducing check valve, 15...
・Check valve, 16... Three-way valve, 17...
safety valve.

Claims (1)

[Scope of Claims] 1. A water supply device, a hot water storage device, and a heating device, and one of the cold water pressurized from the water supply device is piped to reach a cold water frame, and comes out from below the hot water storage device, and is equipped with a temperature controller. The pipe is piped to return to the bottom of the hot water storage device via the heating device and the pump, and branches out from the middle of the pipe that comes out from above the hot water storage device, exits from the bottom of the hot water storage device, and joins the pipe leading to the heating device, and connects to the high temperature hot water frame. A hot water supply device characterized in that the other side of the pressurized cold water from the water supply device is connected to a pipe that exits from below the hot water storage device and reaches a heating device. 2. A patent claim in which a check valve is provided in the piping that exits from above the hot water storage device, exits from the bottom of the hot water storage device, and joins the piping that leads to the heating device, after the point where the piping to the hot water tap branches off. The hot water supply device according to scope 1. 3. The hot water supply device according to claim 1 or 2, wherein a check valve is provided in the piping through which the pressurized cold water is sent out from the water supply device. 4. Claim 1, in which a check valve is provided before the other pipe that does not reach the cold water frame for pressurized cold water from the water supply device is connected to the pipe that exits from below the hot water storage device and leads to the heating device.
The hot water supply device according to item 1, 2, or 3. 5. A patent claim in which the piping that exits from above the hot water storage device, exits from the bottom of the hot water storage device, and joins the piping leading to the heating device is provided with a throttling means after the point where the piping to the hot water frame branches off. The hot water supply device according to scope 1, 2, 3, or 4.