JPS62294820A - Hot-water supplying system - Google Patents

Abstract

PURPOSE:To supply hot-water with two kinds of temperatures simultaneously, by a method wherein, hot-water with medium temperature is supplied through the delivery port of medium temperature water, a first check valve, a water pipeline and an medium temperature cock while hot-water with high temperature is supplied through the delivery port of high-temperature water, a fourth check valve, the water pipeline and a high-temperature cock. CONSTITUTION:A hot-water reserving type boiler 12, provided with the delivery port 19 of high-temperature water and the delivery port 20 of medium temperature water, is provided. A first - third check valves 27, 24, 26, through which the medium temperature water flows, are connected annularly from the delivery port 20 of the medium temperature water to the return port 21 of the hot-water reserving type boiler 12 sequentially through water pipelines 23, 25. The fourth check vale 28, through which the high-temperature water flows, and a medium temperature cock 29 as well as a high-temperature cock 30, which are connected to the primary side and the secondary side of the second check valve 24, are provided from the delivery port 19 of the high- temperature water toward the primary side of the third check valve 36. As a result, hot-water with two kinds of temperatures may be supplied simultaneously without increasing the number of water pipeline for supplying hot-water or operating a temperature controller.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention (a) Field of Industrial Application The present invention relates to a hot water supply system for general household or commercial use that supplies hot water at a predetermined temperature.

(b) Conventional technology In general, conventional water heaters (or water heaters)
There was one as described in the -76045 publication. The water heater described in this publication uses a mixing valve to mix hot water supplied from respective discharge ports provided at the top (high temperature water section) and bottom (low temperature water or medium temperature water section) of the boiler body. It was meant to provide hot water at the desired temperature. FIG. 2 is a schematic diagram of a hot water supply system using such a water heater. Reference numeral 1 denotes a water heater, which outputs hot water from a discharge port 3 that has been adjusted to a desired temperature with a temperature regulator 2 such as a mixing valve. 4 is a pump that circulates hot water through a discharge port 3, an outgoing water pipe 5,
The water is circulated to the return lower via the water piping 6 for the return route. 8.9 is a faucet connected to the water pipe 5, and 10 is a shower nozzle connected to the water pipe 5. Further, 11 is water supply pulp.

The conventional hot water supply system configured in this way has a water heater 1.
After controlling the temperature of the hot water inside with a heating means such as a burner, the hot water is changed to the desired temperature with the temperature controller 2 and then turned on to the faucet 8.
．． 9 and the shower nozzle 10. In addition, the pump 4 is driven to constantly circulate hot water within the water pipe 5.6.
When the faucet 8.9 was opened, hot water at the desired temperature was immediately obtained.

(c) Problems to be Solved by the Invention In the hot water supply system configured as described above, water piping 5.
Relatively high temperature water is circulating inside the chamber. Therefore, the heat radiation loss from the water pipes 5.6 was large, resulting in poor thermal efficiency. Furthermore, since high-temperature water is discharged as soon as the faucet is opened, there is a risk of burns for elderly people and children who are not accustomed to operating the faucet.

Furthermore, in general households, hot water supply with high temperature water is not always necessary. For example, when used for bathing, washing, cooking, and laundry, it is approximately 4
Hot water with a temperature of 0 to 43 degrees is required, and hot water with a temperature of about 80 degrees is required when using hot water to compensate for the drop in temperature during bathing, sterilization and disinfection during washing dishes, and drying. Met.

These two temperatures can be adjusted using the temperature regulator 2, but there is a need to adjust the temperature regulator 2 as necessary, and hot water cannot be supplied at two temperatures at the same time. It was something.

In addition, when supplying hot water at two different temperatures, it was necessary to install two types of hot water supply systems.

In view of these problems, the present invention provides a hot water supply system that can simultaneously supply hot water at two different temperatures without increasing the number of hot water supply pipes or operating a temperature controller.

(D) Means for Solving the Problems The present invention includes a hot water storage boiler that has a high-temperature water outlet and a medium-temperature water outlet, and can control the temperature of the hot water supplied from each outlet. In a hot water supply system, the water piping is connected in a ring so that hot water supplied from the medium-temperature water outlet returns to the return port of the hot water storage boiler, and during this water piping, there is a The first point where hot water flows only towards the
- A fourth check valve in which the third check valve is interposed in the forward direction and allows high temperature water to flow from the high temperature water discharge port toward the primary side of the third check valve; It is equipped with a medium temperature faucet and a high temperature faucet connected to the secondary side.

(f) Function When using the hot water supply system of the present invention configured as described above,
Medium-temperature hot water is supplied through the medium-temperature water outlet, the first check valve, water piping, and the medium-temperature faucet, and high-temperature hot water is supplied through the high-temperature water outlet, the fourth check valve, the water piping, and the high-temperature faucet. It is supplied by

(f) Example A hot water supply system using an example of the present invention will be described below with reference to the schematic diagram shown in FIG. In this figure, 12 is a hot water storage boiler, which has the following configuration. The inside of the can body 13 has a virtual cross section X-
The temperature is a few irm beyond X. This can body 1
A heater 14 (burner) is provided on the upper side (high-temperature water section) of 3, and this heater maintains a constant temperature (approximately 80 degrees) detected by a high-temperature section thermometer 15 that detects the temperature of hot water in the high-temperature water section. controlled as follows. 16 is a pump that circulates high temperature water in the high temperature water section to the medium and low temperature water section. The operation of the pump 16 is controlled so that the temperature detected by the medium temperature section thermometer 17, which detects the temperature of the medium temperature water in the medium and low temperature water section, is constant (approximately 45 degrees). In other words, when the temperature of the high-temperature water section drops, the thermostat 15
works, /<-ner 14 burns. Further, when the temperature of the medium-low temperature water section decreases, the thermostat 17 operates to operate the pump 16, and the hot water of the high-temperature water section is mixed with the medium-low temperature water section, thereby raising the temperature of the medium-low temperature water section. As a result, the inside of the can body 13 is always controlled to have two types of temperature layers.

In addition, 18 is water supply pulp.

19 is a high temperature water discharge port (h), and a high temperature section thermostat 15
The sensor is installed at a location where the water temperature is approximately equal to the temperature detected by the sensor. 20 is a discharge port (a) of medium temperature water;
It is installed at a location where the water temperature is approximately equal to the temperature detected by 7. 21 is a hot water return port (g), which is provided at a location within the can body 13 where the water temperature is low.

22 is a pump that circulates medium-temperature water, and has a discharge port (8) 2
The medium temperature water discharged from the water pipe 23 and the second check valve 2
4. The water is circulated sequentially to the water pipe 25, the third check valve 26, and the return port (g) 21. 27 is a first check valve;
It is connected to the pump 22 at parallel connections (b) and (c). 28 is a fourth check valve, whose negative side is connected to the high-temperature water discharge port (h) 19, and whose secondary side is connected to the primary side of the third check valve 26 through a reading part (f). Connected. These first
The fourth to fourth check valves 27, 24, 26, and 28 allow hot water to flow only in the direction from the primary side to the secondary side (in the direction of the solid arrow).

Reference numeral 29 denotes a medium temperature faucet, which is connected to the primary side of the second check valve 24 via a connecting portion (d). 30 is a high temperature faucet, which is connected to the secondary side of the second check valve 24 via a connecting portion (e).

31 is a throttle part (orifice etc.), and the second check valve 24
This reduces the amount of hot water flowing into the primary side of the system.

When using the hot water system configured in this way, when the pump 23 is operating, medium-temperature water in the can body 13 flows through the discharge port (a) 20 = (b) = (c) - (d) → 2
Check valve 24→(e)-"(f)-Third check valve 26→return port (circulating in the order of g>21. At this time, when the medium temperature faucet 29 is opened, medium temperature water flows through the connection part ( d) through the faucet 29. If the amount of hot water from the faucet 29 is greater than the capacity of the pump 22, this pump 22 will act as a resistance. The hot water is supplied through the first check valve 27 and can handle a large amount of hot water.Also, even when the pump 22 is stopped, medium-temperature water is supplied through the first check valve 27.
It can be supplied through. At this time, medium-temperature water is dispensed from the faucet 29 after the cold water stored in the water pipe 23 is discharged.

Next, when the high-temperature faucet 30 is opened, high-temperature water is discharged from the outlet (h) 1.
9-Third check valve 28-(f)-(e)-The faucet 30 is sequentially opened and supplied. In this case, the medium-temperature water stored in the water pipe 25 is first dispensed, and then the high-temperature water is dispensed, thereby preventing burns caused by sudden dispensing of high-temperature water. Note that medium-temperature water mixes with this high-temperature water via the second check valve 24, but by reducing the amount of inflow at the throttle section 31, a drop in the temperature of the high-temperature water is suppressed. In addition, the high temperature water outlet (
h) If a float switch is provided between 19 and the connection part (f) to stop the operation of the pump 22 when high temperature water is flowing, the amount of medium-temperature water mixed in the high-temperature faucet 30 can be greatly reduced. Can be done.

In this way, medium-temperature water and high-temperature water can be dispensed individually or simultaneously from the faucet 29,30.

Incidentally, the circulation rate of the pump 22 may be small enough that the temperature of the water in the water pipes 23, 25 does not drop too much. Further, the faucet 29, 30, the second check valve 24, the throttle portion 31, and the city water faucet may be constructed as an integral structure.

Furthermore, if the faucet 29 is set for regular use, and the high-temperature faucet 30 is configured to require separate operation, it is possible to prevent elderly people and children who are inexperienced in handling the faucet from suddenly spewing out boiling water and get burned.

(g) Effects of the Invention The present invention provides a hot water supply system equipped with a hot water storage boiler having a high temperature water discharge port and a medium temperature water discharge port, in which medium temperature water flows from the medium temperature water discharge port to the return port of the hot water storage boiler. A fourth check valve that connects the flowing first, second, and third check valves in an annular manner via water piping in order, and causes the high-temperature water to flow from the high-temperature water discharge port toward the primary side of the third reverse valve. and a medium-temperature faucet and a high-temperature faucet connected to the primary and secondary sides of the second check valve,
Without increasing the number of water pipes compared to conventional hot water systems,
Hot water at two different temperatures can be dispensed from each faucet. Furthermore, since medium-temperature water is circulated within the water piping, heat radiation loss can be reduced compared to the conventional case where high-temperature water is circulated, and hot water can be supplied with high energy efficiency.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of a hot water supply system showing an embodiment of the present invention;
FIG. 2 is a schematic diagram of a conventional hot water supply system. 12...Hot water storage boiler, 19...Discharge port for high temperature water, 20...Discharge port for medium temperature water, 21...Return port, 23.25...Water piping, 24...Second Check valve, 26... Third check valve, 27... First check valve, 28... Fourth check valve, 29... Medium temperature faucet,
30...High temperature faucet.

Claims (1)

[Claims] (1) In a hot water supply system equipped with a hot water storage boiler having a high temperature water discharge port and a medium temperature water discharge port, medium temperature water flows from the medium temperature water discharge port to the return port of the hot water storage boiler in the first and second , a fourth check valve which connects the third check valve in an annular manner via water piping in order to flow high-temperature water from the high-temperature water outlet toward the primary side of the third check valve; and a second check valve. A hot water supply system characterized by comprising a medium temperature faucet and a high temperature faucet connected to the primary side and secondary side of a valve.