JPH05322199A - Hot water supply equipment - Google Patents

Abstract

PURPOSE:To obtain a hot water equipment which enables the obtaining of hot water exceeding a fixed temperature at a specified hot water feed port from the initial stage of feeding hot water. CONSTITUTION:This hot water supply equipment is provided with a cold water supply path 3 to be supplied with cold water and a hot water supply path 4 which is branched off from the base end side of the cold water supply path 3 to supply water while the cold water being supplied is heated to be supplied to the side of a hot water feed port 10. The hot water supply path 4 is provided with a hot water supply valve means 9 such as hot water feed faucet which controls the feeding of water or the stopping of the feeding at the hot water feed port 10. A bypass path 16 is provided to connect the hot water supply path 4 on the side of the hot water supply port 10 from the hot water supply valve means 9 and the hot water supply path 3 while a branch section 2 on the side of the hot water path of the bypass path 16 is provided with a passage switching means 17 to introduce hot water to the bypass path 16 when the temperature of the hot water flowing into the branch section 2 is lover than a specified value and to the hot water supply path 4 on the side of the hot water feed port 10 when it is higher than the specified value.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to prevention of initial cold water supply in hot water supply equipment.

[0002]

2. Description of the Related Art The structure of a conventional hot water supply facility is shown in FIG.
It is shown in (a) and (b). The one shown in FIG. 5 (a) has the simplest structure adopted for home use, etc., and has a structure in which a hot water supply scallop 100 for a hot water outlet is provided in a hot water supply passage connected to a hot water supply boiler. is there. Figure 5
The one shown in (b) is used for a small-scale hotel hot water supply system, etc., in order to prevent cold water from coming out at the beginning of hot water supply for the purpose of placing emphasis on comfort, a hot water storage tank, The boiler 6 for maintaining the hot water at a constant temperature is provided, and the circulating hot water supply pipe 20 for the hot water supply scallop 100 is provided.
0 is provided, and hot water is constantly circulated in the hot water supply system by using the pump 201 arranged in this pipe.

[0003]

However, the above-mentioned conventional techniques have the following drawbacks, respectively. In the former example, if the hot water supply passage is closed without using the hot water for a while, the hot water in the passage becomes water due to heat dissipation. Etc. has a problem. On the other hand, in the latter example, the hot water continues to be circulated even during the time when people rarely use the hot water, and the heat radiation loss and the pump power cannot be ignored. Further, since the circulation path system is adopted, the cost of hot water supply piping will be doubled, and there is a problem in applying it to general households. Therefore, an object of the present invention is to obtain, at low cost, hot water supply equipment capable of obtaining hot water at a predetermined temperature or higher at a predetermined hot water outlet from an early stage of hot water discharge.

[0004]

To achieve this object, the hot water supply equipment according to the first aspect of the present invention is characterized in that a cold water is supplied to the hot water supply path and a water supply path is branched from the base end side of the hot water supply path. In the hot water supply facility, a hot water supply passage is provided, which is provided with a hot water supply passage for raising the temperature of the supplied cold water to the hot water supply outlet side, and controlling hot water supply / stopping from the hot water supply outlet in the hot water supply passage. While providing a bypass passage connecting the hot water supply passage on the hot water outlet side and the water supply passage, the hot water supply passage side branch portion of the bypass passage, when the temperature of the hot water flowing into the branch portion is lower than a predetermined temperature, the hot water to the bypass passage, The feature of the hot water supply facility according to the second aspect of the present invention is that hot water is discharged from the hot water supply port to the hot water supply port when the temperature is higher than a predetermined temperature. Hot water supply equipment equipped with hot water supply valve means for controlling stop In the above, in addition to providing a branch path branching from the hot water supply passage on the hot water outlet side of the hot water supply valve means, at the branch portion between the hot water supply passage and the branch passage, the hot water is branched when the temperature of the hot water flowing into the branch portion is lower than a predetermined temperature. The passage is provided with a passage switching means for guiding hot water to the hot water supply passage on the outlet side when the temperature is higher than a predetermined temperature, and the action and effect thereof are as follows.

[0005]

That is, in common with the first and second inventions,
The flow path switching means is provided on the lower side of the hot water supply valve means. The flow path switching means switches the hot water supply flow path according to the hot water temperature. That is, when the hot water temperature is equal to or higher than the predetermined temperature, the hot water is guided to the hot water outlet side, and when the hot water temperature is lower than the predetermined temperature, the hot water temperature is introduced to a channel other than the hot water outlet. Here, in the case of the first invention, this is a water supply channel via the bypass channel, and in the case of the second invention, it is a branch channel. Therefore, the problem that hot water having a low temperature is supplied from the tap hole at the initial stage of hot water supply is solved. Further, it is not necessary to constantly keep hot water in the circulation path. Since this configuration does not provide a special circulation path or the like, it can be constructed very easily and inexpensively.

[0006]

As described above, according to the present invention, it is possible to obtain a hot water supply facility capable of obtaining hot water having a predetermined temperature or higher at a predetermined hot water outlet from an early stage of hot water discharge at a low cost and realizing energy saving. It was possible to prevent unpleasant cold water supply from the sprue.

[0007]

Embodiments of the present application will be described with reference to the drawings. FIG. 1 shows a configuration diagram of a hot water supply facility 1, and FIG. 2 shows a configuration of a branching unit 2.

First, the equipment configuration will be described with reference to FIG. The hot water supply facility 1 is provided with a water supply passage 3 and a hot water supply passage 4 arranged side by side, and the water supply passage 3 and the hot water supply passage 4 receive water from the same water supply source 5. Explaining the devices arranged in the hot water supply passage 4, the hot water supply boiler 6, the pump 7, the check valve 8 provided in parallel with the pump 7, and the hot water supply valve means in this order from the base end side of the hot water supply passage 4. It is equipped with a hot water supply scallop 9. The tip of the hot water supply passage 4 is a so-called hot water outlet 10. In addition, the hot water supply boiler 6 is provided with a sound wave pulse generator 11 that oscillates ultrasonic waves along the flow path in the hot water supply passage 4, and a receiving device 12 for receiving the pulse sound of the sound wave pulse generator 11 is provided. Is provided. Here, the sound wave pulse generator 11 and the receiver 1
2 is used for confirmation of establishment of a bypass circulation path 13 described later. On the other hand, a water supply run 14 is also provided on the tip side of the water supply passage 3, and water is supplied from the water outlet 15.

Further, as shown in the drawing, a bypass passage 16 for connecting the hot water supply passage 4 and the water supply passage 3 on the downstream side of the hot water supply curran 9 is provided, and the hot water supply passage side branch portion 2 of the bypass passage 16 is provided with the branch portion 2. When the temperature of the hot water flowing into the tank is lower than a predetermined temperature, the hot water is guided to the bypass passage 16, and when the hot water temperature is higher than the predetermined temperature, the hot water is guided to the hot water supply passage 4 on the outlet opening side, which is a temperature switching means shown in FIG. A valve structure 17 is provided. That is, by providing the bypass passage 16 in this way, the bypass circulation passage 13 is formed across the hot water supply and water supply passages 4 and 3, and the temperature sensing valve structure 17 is provided downstream of the branch portion 2. The flow path on the side is selected according to the hot water temperature. Further, the pump 7 is configured to operate only when the bypass circulation path 13 is in conduction and the hot water supply scallop 9 is open for energy saving, and the main burner (not shown) of the hot water supply boiler 6 has the above bypass circulation. A configuration that operates under the OR condition of the path establishing condition and the conventional diaphragm detection hydraulic pressure condition is adopted.

The structure of the branching portion 2 provided with the temperature sensing valve structure 17 will be described below. The temperature sensing valve structure 17 includes a moving valve body 20 having a pair of projecting portions 19a and 19b on both sides of a closing plate-like body 18, a hot water supply passage inlet 21 on a tap opening side, and an inlet portion 22 of a bypass passage. It is configured to include a pair of valve seat portions 23 provided, and a pair of springs 24, 25 is provided between the closing plate-like body 18 and the valve seat portion 23.
Are arranged. Here, one spring (the bypass path side in the embodiment) is a normal winding spring 24, and the other spring (the hot water supply path side in the embodiment) is a shape memory alloy winding spring 25.

The operation of the hot water supply facility 1 will be described below.
The sound wave pulse generator 11 emits a pulse sound at regular intervals. Here, if the hot water supply scallop 9 is closed,
The receiving device 12 receives the direct pulse sound that does not pass through the bypass circuit 13. Now, when the hot water supply scallop 9 is opened,
Since the hot water temperature is still low, the bypass circulation path 13 is formed from the hot water supply path 4 to the branch portion 2, the bypass path 16, the water supply path 3, and the hot water supply boiler 6. Therefore, the above-described receiving device 12 receives the pulse sound and the direct pulse sound transmitted through the bypass circuit 13 in a double manner, and the formation of the bypass circuit is confirmed. According to this detection, the pump 7 and the hot water supply boiler 6
The operation of starts. In this state, low temperature water flows from the hot water supply passage 4 to the branch portion 2. At this time, while the temperature of the hot water in the branch portion 2 is lower than a predetermined value, the normal winding spring 24
Presses the shape memory alloy coil spring 25 to close the hot water supply passage connected to the hot water outlet 10 and keep the bypass passage 16 side open. Therefore, in this state, the water in the hot water supply passage 4 continues to flow to the water supply passage 3 side through the bypass passage 16. When hot water of a predetermined temperature arrives from the hot water supply boiler 6 soon, the shape memory alloy spring 25 pushes back the normal winding spring 24 by remembering the shape stored in advance. As a result, the bypass 16 side is closed and the hot water supply passage 4 side is opened, and hot water having a predetermined temperature or higher is supplied from the initial stage of hot water supply.

[Other Embodiment] In the above embodiment, if the water in the initial hot water supply passage 4 is to be discarded, the bypass passage 1
Instead of 6, the water outlet 30 may be simply connected, or a branch passage 31 that replaces the bypass passage 16 may be provided.
Such an example is shown in FIG. Further, in the relationship between the hot water supply valve means 9 and the branch part 2, the branch part 2 may be on the upstream side of the hot water supply valve means 9 as shown in FIG. Further, in the above-described embodiment, the pulse sound is used to detect the establishment of the bypass circulation path 13.
You may make it sound mechanically when opening. Further, the pump 7 may be operated continuously or the hot water supply boiler may be built-in.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the accompanying drawings by the entry.

[Brief description of drawings]

[Figure 1] Configuration diagram of hot water supply equipment

FIG. 2 is a diagram showing a configuration of a branch unit.

FIG. 3 is a diagram of another embodiment.

FIG. 4 is a diagram of another embodiment.

FIG. 5: Diagram of conventional configuration

[Explanation of symbols]

 3 Water Supply Channel 4 Hot Water Supply Channel 9 Hot Water Supply Valve Means 10 Hot Spring Outlet 16 Bypass Path 20 Moving Valve Body 31 Branch Path

Claims (4)

[Claims] 1. A water supply channel (3) to which cold water is supplied, and water is branched and supplied from the base end side of the water supply channel (3) and the temperature of the supplied cold water is raised to the hot water outlet (10) side. A hot water supply passage (4) for supplying hot water to the hot water supply passage (4), and hot water supply valve means (9) for controlling hot water supply / stopping from the hot water supply outlet (10).
A hot water supply facility provided in the hot water supply valve means (9) and a bypass path (16) for connecting the hot water supply path (4) closer to the hot water outlet (10) and the water supply path (3), When the temperature of the hot water flowing into the hot water supply passage side branch portion (2) of the bypass passage (16) is lower than a predetermined temperature, the hot water is fed to the bypass passage (16) at the predetermined temperature. Hot water supply equipment provided with a flow path switching means (17) for guiding the hot water to the hot water supply passage (4) on the hot water outlet (10) side when the temperature is higher. 2. A hot water supply facility comprising hot water supply valve means (9) for controlling the hot water supply / stoppage of the hot water supply port (10) in the hot water supply passage (4), wherein the hot water supply valve means (9) discharges the hot water. A branch passage (31) is provided to branch from the hot water supply passage (4) on the side of the sprue (10), and at the branch portion between the hot water supply passage (4) and the branch passage (31), the hot water flowing into the branch portion is supplied. A flow path switching means (17) for guiding the hot water to the branch passage (31) when the temperature is lower than a predetermined temperature, and to the hot water supply passage (4) on the hot water outlet (10) side when the hot water is higher than the predetermined temperature. ) Equipped hot water supply equipment. 3. A hot water supply facility having a hot water supply control means (9) for controlling the hot water supply / stop of the hot water supply port (10) in the hot water supply path (4), the branch being branched from the hot water supply path (4). A passage (31) is provided, and when the temperature of the hot water flowing into the branch portion is lower than a predetermined temperature, the hot water is fed to the branch passage (4) and the branch passage (31). 31) Hot water supply equipment provided with a flow path switching means (17) for guiding the hot water to the hot water supply passage (4) on the side of the hot water outlet (10) when the temperature is higher than the predetermined temperature. 4. The flow path switching means (17) is provided with a moving valve body (20) in the branching section (2), the moving valve body (20) being moved in position according to the temperature of the inflowing hot water, and the moving valve body (20) is moved. The flow path on the outflow side is switched by means of.
Alternatively, the hot water supply facility according to claim 2.