JPH10246514A - Pressurizing device utilizing solar heat hot water heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sufficient utilization of solar heat energy attained by a solar heat hot water heater by a method wherein in the case that a temperature of hot water fed from a solar heat hot water heater is too high as raw water for an automatic hot water feeding device, tap water is mixed with the hot water to cause the temperature to be less than a set temperature when the water is heated and fed. SOLUTION: A case 10 is formed with a first discharging port 11 and a second discharging port 12 connected to each of a first inlet port 31 and a first outlet port 33 of a mixing valve 30; a water feeding port 13 connected to a pump 20; and a tap water connecting port 14 connected to a second inlet port 32. When an automatic hot water feeder requires raw water for use in feeding hot water, hot water fed from the solar heat hot water feeder and water fed from a tap water pipe are mixed to each other at a mixing value 30, thereby hot water having a temperature less than a set temperature at the automatic hot water feeder is made and the hot water is discharged out of the second discharging port 12 to the automatic hot water feeder.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for pressurizing hot water from a solar water heater, and more particularly to a device for positively supplying hot water from a solar water heater to an automatic water heater such as a boiler. Pressure device.

[0002]

2. Description of the Related Art A solar water heater generally supplies hot water produced, for example, to a hot water mixer tap or the like due to a head drop where the solar water heater is installed. Therefore, the solar water heater is supplied from the solar water heater. Normally, hot and cold water has only the pressure of the drop differential. For this reason, when using the shower with hot water from this solar water heater, when using a large amount of tap water, the shower was vibrant, but the hot water from the solar water heater was used. If you want a warm shower, the shower will be extremely weak and you will not be able to fully function as a shower. Such a phenomenon,
This is due to the lack of sufficient pressure in the hot water from the solar water heater, especially the hot water from the solar water heater,
This is noticeable in a hot and cold water mixing tap that is mixed with tap water to obtain hot water at a predetermined temperature.

[0003] Then, by applying a predetermined pressure to the hot water from the solar water heater by the action of a pump or the like,
It is conceivable to keep the momentum of the shower unchanged. However, since the solar water heater has only a limited storage volume, the water of the used hot water is always supplied, and when a certain amount of hot water is used, the water is supplied from the solar water heater. The temperature of the hot and cold water will drop steadily. That is, if pressure is applied to the hot water from the solar water heater by a pump or the like and the hot water is used as shower water, then the temperature of the shower will be lowered.

As described above, when the temperature of the hot water from the solar water heater falls and the temperature of the shower starts to decrease, the use of the hot water from the solar water heater is stopped and the hot water from the water heater such as a boiler is used. It is conceivable to form shower water. However, even though the temperature has dropped, the hot water from the solar water heater still stores enough solar thermal energy, and is at least warmer than tap water and contains more thermal energy. Without this, the merits of a solar water heater would not be fully exploited.

[0005] On the other hand, various improvements have been made in water heaters such as boilers, and in particular, in recent water heaters, as shown in FIG. In addition, the number of baths that can take in the hot and cold water in the bath 500 and perform “reheating” is increasing. That is, in this automatic water heater, the temperature of the hot water taken in from the bath 500 is always detected, and when the “reheating” is to be performed, the hot water is automatically heated. Is returned to the bath 500 side again.

More specifically, a recent automatic water heater has a structure in which the hot water supplied thereto cannot be heated or heated unless the temperature of the hot water to be heated is, for example, about 42 ° C. or less. It is. In other words, about 42 solar water heaters
Even if hot water at a temperature of ℃ or more is supplied to the automatic water heater side, it is not heated. Therefore, even if it is attempted to use hot and cold water formed by a solar water heater as raw water for a recent automatic water heater and use it as hot water for the bath 500, it may be impossible.

The inventor of the present invention has sought to make sufficient use of the hot water from this type of solar water heater, and to avoid any problems in using the hot water. As a result of various studies, the present invention has been completed.

[0008]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above circumstances, and a problem to be solved is to make full use of the function of an automatic water heater while maintaining the function of hot water from a solar water heater. Is to make full use of

That is, it is an object of the present invention according to claim 1 that not only the pressure shortage of the solar water heater can be eliminated, but also the temperature of the hot water from the solar water heater side can be reduced by the raw water of the automatic water heater. If it is too high, pressurizing device that can make full use of the solar thermal energy obtained by the solar water heater as hot water whose temperature is below the set temperature at the time of heating and hot water supply, by actively mixing the tap water with this Is to provide.

The object of the invention according to claim 2 is to achieve the same object as the invention according to claim 1, and to prevent hot water from a solar water heater from passing through an automatic water heater. It is an object of the present invention to provide a pressurizing device which can be selected so as to be able to perform the above-mentioned process and can sufficiently utilize the solar heat energy obtained by the solar water heater.

[0011]

Means for Solving the Problems In order to solve the above problems, means according to the first aspect of the invention will be described with reference numerals used in the embodiments. The hot water heater 300 is provided between the automatic water heater 300 that is activated only when the raw water temperature to be heated at the time of hot water supply is equal to or higher than a predetermined value, and the water pipe 400, and supplies water to the automatic water heater 300 at the time of hot water supply to the solar water heater 200 Pressurizing apparatus 100 which is operated while utilizing hot and cold water from
A pump 20 for receiving and supplying hot water from the solar water heater 200, a first inlet 31 connected to the downstream side of the pump 20 for receiving hot water from the pump 20, and a water pipe 400 side. A mixing valve 30 having a second inflow port 32 connected thereto and an outflow port 33 connected to the automatic water heater 300 side, and a case 10 for accommodating the mixing valve 30 and the pump 20; In this case 10, a first inlet 31 of the mixing valve 30 is provided.
And the first outlet 11 and the second outlet 12 connected to the outlet 33, and the water inlet 1 connected to the pump 20 respectively.
3 and the water supply connection port 14 connected to the second inflow port 32, and when the automatic water heater 300 needs raw water for hot water supply, the hot water from the solar water heater 200 side and the water pipe The water from the hot water 400 is mixed in the mixing valve 30 to form hot water having a temperature equal to or lower than the temperature set in the automatic water heater 300, and this hot water is used as the second hot water.
A pressurizing device 100 "characterized by discharging from the discharge port 12 to the automatic water heater 300 side.

That is, in the pressurizing device 100, a hot water supply pipe 210 of the solar water heater 200 is connected to a water inlet 13 formed in the case 10. The pressure is applied by the pump 20 and the pressure is sent to the mixing valve 30 side. When hot water is being supplied by the automatic water heater 300, the pressurizing device 100 supplies hot water whose temperature has been reduced to 30 ° C. or lower to the automatic water heater 300 by the mixing valve 30, and When the hot water supply by 300 is not performed, the solar water heater 200
Is supplied directly to the supply pipe 21 connected to the hot and cold water mixing faucet 600 and the shower device 501 without passing through the mixing valve 30.

The solar water heater 200 to which the pressurizing device 100 of the present invention is applied is not limited to a solar water heater of a type in which a hot water tank is placed on a roof as shown in FIG. Apart from this, it also includes those that place it on the ground. If the hot water tank is placed on the ground, the hot water tank
Is to be connected.

The above operation will be specifically described according to the state of the automatic water heater 300 as follows. First, when hot water is being supplied by the automatic water heater 300, that is, when hot water is not supplied to the bath 500 shown in FIG. 1 and hot water is supplied from the hot water supply pipe 303 into the bath 500, Alternatively, when hot water is not supplied to bath 500, but hot water is supplied to other water appliances such as hot water mixing faucet 600 and shower device 501, automatic water heater 300 absorbs water from second hot water supply pipe 302. Will do. Since the second hot water supply pipe 302 is connected to the outlet 33 of the mixing valve 30 via the second discharge port 12 of the case 10, the mixing valve 30 is connected to the solar water heater 200.
The water and the water from the water pipe 400 are taken in, mixed so as to be lower than a predetermined temperature (30 ° C. or lower), and discharged from the outlet 33.

As a result, the temperature of the hot water supplied from the solar water heater 200 into the pressurizing device 100 becomes 42 ° C.
Even if it is above, when it is supplied to the second hot water supply pipe 302 for the automatic water heater 300, this solar water heater 200
The hot and cold water becomes 30 ° C. or lower by the forced mixing of tap water by the mixing valve 30. Therefore, even if the automatic hot water heater 300 does not heat the hot water at a temperature lower than the set temperature, the hot water at 42 ° C. or higher formed in the solar water heater 200 will not be heated.
0 and will be used in the solar water heater 200
The solar thermal energy obtained in the above will be used.

Now, when hot water is not supplied by the automatic water heater 300, that is, the bath 5 shown in FIG.
Considering the case where hot water is provided at 00 and reheating of hot water in bath 500 is performed, or when hot water is not supplied to first hot water supply pipe 301,
In this case, the automatic water heater 300 does not absorb water through the second hot water supply pipe 302 connected to the outlet 33 of the mixing valve 30 via the second discharge port 12 of the case 10. There is no hot water or water flow in the mixing valve 30. Therefore, the hot water from the solar water heater 200 does not flow into the mixing valve 30 from the first inflow port 31, but is supplied directly to the supply pipe 21 by the pump 20. Therefore, this supply pipe 21
Hot water mixing faucet 600 and shower device 50 connected to
If 1 or the like is used, hot water from the solar water heater 200 is
It will be used in the hot and cold water mixing faucet 600 and the like.

As a result, the hot water supplied from the solar water heater 200 into the pressurizing device 100 is supplied to the automatic hot water heater 30.
When the hot water is not supplied at 0, the mixing of the tap water by the mixing valve 30 is not performed. In other words, even if the automatic water heater 300 does not heat the water unless the temperature is below the set temperature, the automatic water heater 3
If the hot water is not supplied by 00, the solar water heater 2
The hot and cold water formed in 00 is used in each water device such as the shower device 501 connected to the supply pipe 21, and the solar heat energy obtained by the solar water heater 200 is used. is there.

When the hot water from the solar water heater 200 is used without passing through the automatic water heater 300, the temperature of the hot water may be too low.
There is no particular problem when washing dishes in the room or using the shower device 501 in summer. When the hot water from the solar water heater 200 is to be used only as primary water for the automatic water heater 300, the first discharge port 11 of the case 10 is closed, and the first discharge port 11 and the automatic water heater are connected. 30
The connection with the supply pipe 21 from 0 may not be performed.

Further, in order to solve the above-mentioned problem, a means adopted by the invention according to claim 2 relates to a method according to claim 1, wherein the pressurizing device 100 according to claim 1 is described as “first hot water supply pipe 30 of automatic water heater 300.
1 and the first discharge port 11 of the case 10, the hot water supply to the hot water supply pipe 310 located on the downstream side is performed by the first hot water supply pipe 30.
By interposing a switching three-way valve 40 that can selectively perform whether from the first side or from the first discharge port 11 side, and by using the switching three-way valve 40, the solar water heater 200 Hot water can be used irrespective of the automatic water heater 300 ".

That is, the pressurizing device 1 according to claim 2
00 is provided with a switching three-way valve 40 interposed between the first hot-water supply pipe 301 of the automatic water heater 300 and the first discharge port 11 of the case 10. The first hot water supply pipe 301 connected to the automatic water heater 300 supplies hot water to the hot water supply pipe 310 located on the upstream side.
If the water is supplied only from the side, even if the temperature of the hot water from the solar water heater 200 is low and cannot be used with the hot water mixing faucet 600 or the shower device 501, hot water of sufficient temperature is supplied from the automatic water heater 300. You can do it.

If the hot water supply to the hot water supply pipe 310 located on the downstream side is performed only from the first discharge port 11 side by the switching three-way valve 40, the solar water heater 20
Whatever the water temperature is from zero, the water from the solar water heater 200 can be completely used. In other words, if hot water having a sufficient temperature is formed in the solar water heater 200, the hot water can be completely used irrespective of the automatic water heater 300.

The operation of each of the above-described pressurizing devices 100 will be described below, focusing on the members constituting the pressurizing devices 100. First, for example, when trying to fill hot water in bath 500 shown in FIG. 1, automatic water heater 300 is started. At this time, since the automatic water heater 300 fills the bath 500, the first hot water supply pipe 301 side is closed by a valve (not shown) in the bath 500. Therefore, the automatic water heater 300 has its second hot water pipe 3
Since water is to be supplied from the 02 side, hot water flows in the supply pipe 21 in the case 10. Since the flow switch 22 that detects this flow acts to operate the pump 20, the pump 20 is operated by the solar water heater 20.
The hot and cold water in 0 is sucked from the water suction port 13 and fed to the supply pipe 21 side.

As shown in FIGS. 2 and 3, a mixing valve 30 is connected to the supply pipe 21. And
In this mixing valve 30, as shown in FIG. 4, an outflow port 33 communicating with a first hot water supply pipe 301 of the automatic water heater 300 is formed, and a sensing flow path 34 communicates with the outflow port 33. Since the temperature sensing means 37 is disposed in the sensing flow path 34, the temperature sensing means 37
Will operate according to the temperature of the surrounding hot and cold water.

That is, when the temperature of the surrounding hot water is higher than the set temperature (for example, 30 ° C.), the temperature sensing means 37 pushes down the valve body 37a provided at the lower end of FIGS. On the contrary, when the temperature is low, the valve hole 37 is contracted and the valve body 37a is pushed upward in the drawing together with the action of the spring 37b to open the valve hole 38. The operating position of the valve body 37a is determined by the handle 39 provided on the temperature sensing means 37 and protruding outward, based on the temperature set in the automatic water heater 300.

Here, when the temperature of the hot water sent from the solar water heater 200 into the mixing valve 30 is higher than the set temperature, the temperature sensing means 37 sets the valve 3
7a is pushed downward in FIGS.
Will be released. Then, water is supplied from the first flow path 35 communicating with the water pipe 400 to the second flow path 36 communicating with the solar water heater 200 side. The water from the solar water heater 200 and the water from the water pipe 400 are mixed at a portion located upstream of the sensing means 37. Accordingly, the temperature of the hot and cold water discharged from the outlet 33 of the mixing valve 30 becomes lower than the temperature required by the automatic water heater 300, and the water can be used in the automatic water heater 300.

What is important here is that the solar water heater 200
Even if there is insufficient pressure in the hot water sent from the side,
Since the pressure by the pump 20 is applied to this,
Mixing of hot water from solar water heater 200 and water from water pipe 400 is ensured. The same applies to the pressurizing device 100 according to claim 2 which uses the switching three-way valve 40. That is, in the hot and cold water sent to the hot and cold water mixing faucet 600 and the shower device 501 through the pressurizing device 100 and the switching three-way valve 40, not only the pressure due to the head of the solar water heater 200 but also the pressure from the pump 20 is applied. It is being done. Therefore, when the pressurizing device 100 according to the present invention is used, for example, a shower will squirt vigorously.

If the temperature of the hot water sent from the solar water heater 200 into the mixing valve 30 is lower than the set temperature, that is, if it can be used as it is as the primary water in the automatic water heater 300, temperature sensing is performed. The means 37 is contracted to lift the valve body 37a upward in FIGS. 4 and 5, and the valve hole 38 is closed by the valve body 37a. As a result, without adding water from the water pipe 400, only the hot water from the solar water heater 200 becomes the second water.
Automatic water heater 3 from first hot water supply pipe 301 through discharge port 12
It is fed to 00.

By the way, even if the temperature of hot water on the solar water heater 200 side is lower than the set temperature, the solar water heater 2
Since the hot water sent from the 00 side stores solar thermal energy to some extent, when the hot water is heated in the automatic water heater 300, for example, when compared to directly heating tap water, energy such as gas is reduced. Is to be saved. In other words, the hot and cold water in the solar water heater 200 is completely consumed by passing through the pressurizing device 100 even if the temperature is low, and any water is stored in the solar water heater 200. The solar thermal energy can be fully utilized.

In the pressurizing device 100 according to the present invention, it is also an important function that the installation and piping work can be performed outside the wall of the house. That is, in order to install the pressurizing device 100, as shown in FIG. 1, the water inlet 13 formed in the case 10 is connected to the solar water heater 2.
On the 00 side, the first discharge port 11 and the second discharge port 12 are
Since it is only necessary to connect each of the first hot water supply pipe 301 and the second hot water supply pipe 302 on the automatic hot water supply 300 side, the installation and the construction work are very simple. In other words, in a general household, the solar water heater 20
When the water heater 200 and the automatic water heater 300 are provided, the pressurizing device 100 according to the present invention can be easily interposed between the solar water heater 200 and the automatic water heater 300. Since there is no need to make any changes to the already installed solar water heater 200 or automatic water heater 300, this pressurizing device 100 can be used only by performing additional construction, which is very advantageous. It is something.

In particular, when the solar water heater 200 is already installed and the automatic water heater 300 is to be newly installed, the solar water heater 2
It is effective to make the automatic water heater 300 function while using hot water from 00. The automatic water heater 300 has a water pipe 4
It is premised that the water from 00 is heated, and since the primary water temperature is not lower than a certain value (about 40 ° C.) or less due to “reheating”, the solar water heater 200 Can not be used directly, but the pressurizing device 100 according to the present invention mixes the water from the water pipe 400 with the water from the solar water heater 200 to lower the temperature of the hot water to the set temperature or less. Because
Hot water from the solar water heater 200 already installed can be positively used.

[0031]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, each invention will be described with reference to a pressurizing apparatus 100 as an embodiment shown in the drawings. The pressurizing apparatus 100 according to this embodiment substantially includes each invention. Therefore, the following description will be made focusing on the pressurizing device 100 of this embodiment.

FIG. 1 shows a pressurizing apparatus 100 according to the present invention.
, A typical example of a state of being interposed between the solar water heater 200 and the automatic water heater 300 is schematically shown, and the hot and cold water generated by the solar water heater 200 and the automatic water heater 300 is
For example, it is used in a shower device 501 of a bath 500 or a hot and cold water mixing faucet 600 installed in a kitchen or the like. Here, the solar water heater 200 is a general one, and raw water such as tap water is supplied from a water supply pipe attached to a lower part thereof. Hot water storing solar thermal energy in the solar water heater 200 is Is sent from the hot water supply pipe connected to the upper part of the solar water heater 200 to the pressurizing device 100 side.

As shown in FIG. 1, the automatic water heater 300 can directly supply hot water from the hot water supply pipe 303 to the bath 500, and also takes in the hot water in the bath 500 and re-heats it. Can be performed. That is, in the automatic water heater 300, the temperature of the hot water taken in from the bath 500 is always detected, and when the “reheating” is to be performed, the hot water is automatically heated, and the hot water is heated. Hot water supply pipe 303
Again to the bath 500 side.

The automatic water heater 300 has the first
Take in primary water from hot water supply pipe 301 and heat it,
Separately from the “reheating” of the hot water in the bath 500, the shower device 501 and the hot water mixing faucet 60
It can also be heated to zero.

The pressurizing device 100 is, as shown in FIG.
A pump 20 and a mixing valve 30 are incorporated in a case 10. The case 10 has a water inlet 13 to which a hot water supply pipe 210 of the solar water heater 200 is connected. The case 10 is provided with a first outlet 11 and a second outlet 12 to which a first outlet 31 and an outlet 33 of a mixing valve 30 described later are connected, respectively. 11 and second discharge port 12
Are connected to the first hot water supply pipe 301 side and the second hot water supply pipe 302 of the above-described automatic water heater 300, respectively. The case 10 has a water connection port 14 connected to the water pipe 400.

In the present embodiment, since the pressurizing device 100 is often installed outdoors, for example, as shown in FIG. A heater 25 is provided to prevent freezing in severe cold, and the case 10 is formed of a metal material such as stainless steel to have excellent weather resistance and the like. The pressurizing device 10
In FIG. 2, a liquid hammer 23 is provided downstream of the flow switch 22 and upstream of the mixing valve 30 as shown in FIG. To absorb liquid hammer. Further, in the pressurizing device 100, as shown in FIG.
3 is provided with a drain valve 26 for preventing freezing. When the drain valve 26 is opened or the drain valve 13 is automatically opened by the pressure at the time of freezing, water is absorbed. The water in the vicinity of the port 13 is drained to prevent rupture of the pipe due to freezing of the water.

As shown in FIG. 2, a pump 20 is fixed in the case 10 via a cushioning material so that noise from the pump 20 does not leak out of the case 10. . In addition, the mixing valve 30 is provided with a support base made of a heat insulating material, for example, below the mixing valve 30, so that heat energy of hot and cold water passing through the mixing valve 30 is not lost, At this time, the freezing of water in the mixing valve 30 is prevented.

The pump 20 positively supplies hot and cold water from the solar water heater 200 to the mixing valve 30 side. For example, the pump 20 is electrically driven, and a power cord for that purpose is not shown. , So as to come out of the case 10. Further, a supply pipe 21 is connected to the discharge port side of the pump 20. The supply pipe 21 is connected to the first inlet 31 on the mixing valve 30 side.
The supply pipe 21 is provided with a flow rate switch 22 for detecting the flow of hot and cold water therein and controlling the driving of the pump 20.

The mixing valve 30 selectively discharges hot or cold water from the solar water heater 200 side pressurized by the pump 20 from the first discharge port 11 or the second discharge port 12 of the pressurizing device 100. Things. As shown in FIGS. 4 and 5, the mixing valve 30 is connected to a first inflow port 31 connected to the supply pipe 21 from the pump 20 and a water supply port 14 of the case 10. It has a second inlet 32 connected to the pipe 400 and an outlet 33 connected to the first hot water supply pipe 301 of the automatic water heater 300 via the second discharge port 12. As shown particularly in FIG. 5, the inflow port 32 is an outlet of the sensing flow path 34 in the valve main body 30a constituting the mixing valve 30. This sensing channel 3
As shown in FIG. 5, a first flow path 35 and a second flow path 36 can communicate with the axis of the fourth flow path 4, and each of the second flow paths 36 of the first flow path 35 The other end serves as the second outlet 32 and the first outlet 31, respectively.

As shown in FIGS. 4 and 5, the sensing flow path 34 is provided with a temperature sensing means 37 for sensing the temperature of the hot and cold water flowing therethrough.
Is integrated with a valve body 37a for opening and closing the valve hole 38. The temperature sensing means 37 has a swelling agent such as paraffin sealed therein, and when the swelling agent expands due to the temperature of the surrounding hot and cold water, the above-mentioned valve body 37a is moved to the lower spring in the figure. It is depressed against the urging force of 37b to open the valve hole 38. Of course, the temperature sensing means 37 contracts when the temperature of the hot and cold water flowing therearound is low, and cooperates with the urging force of the spring 37b to push the valve body 37a upward in the drawing to close the valve hole 38. Is what you do. The operation timing of the temperature sensing means 37, that is, the set temperature of the hot and cold water flowing in the sensing flow path 34 can be freely set by turning a handle 39 provided outside the mixing valve 30.

In the case of the embodiment shown in FIG. 1, the three-way valve 40 is switched between the supply pipe 21 extending from the first discharge port 11 of the case 10 and the second hot water supply pipe 302 of the automatic water heater 300. The downstream side of the switching three-way valve 40 is connected to a hot water supply pipe 310 to which the shower device 501 and the hot and cold water mixing faucet 600 are connected. In other words, the switching three-way valve 40 can selectively perform hot water supply to the hot water supply pipe 310 from the first hot water supply pipe 301 side or the first discharge port 11 side. The switching can be performed when only the hot water from the automatic water heater 300 is used or when only the hot water from the solar water heater 200 is used.

The control device 50 shown in FIG. 2 controls the driving of the pump 20, the heater 25, and the temperature switch for detecting the ambient temperature. For example, the control device 50 controls the energization of the heater 25 by a signal from the temperature switch. And so on.

[0043]

As described in detail above, according to the first aspect of the present invention, as described in the above embodiment, "the solar water heater 200 and the raw water temperature to be heated at the time of hot water supply are equal to or higher than a predetermined temperature. Automatic water heater 300 that is interposed between water heater 400 and water heater 300 that is activated only at the time of hot water supply.
Pressurizing apparatus 100 for supplying water to the solar water heater 200 using hot water from the solar water heater 200 side. The pump 20 receives the hot water from the solar water heater 200 and feeds it. A first inlet 31 connected to the downstream side of the pump 20 to receive hot water from the pump 20, a second inlet 32 connected to the water pipe 400, and connected to the automatic water heater 300. Mixing valve 30 having an outflow port 33 to be
0 and a case 10 for accommodating the pump 20.
A first outlet 11 and a second outlet 12 connected to an inlet 31 and an outlet 33, a water inlet 13 connected to a pump 20, and a water supply port 14 connected to a second inlet 32, respectively. When the automatic water heater 300 needs raw water for hot water supply, the hot water from the solar water heater 200 and the water from the water pipe 400 are mixed with each other by the mixing valve 3.
By mixing at 0, hot water having a temperature equal to or lower than the temperature set in the automatic water heater 300 is formed, and the hot water is discharged from the second discharge port 12 to the automatic water heater 300 side. " In addition, there is a feature in its configuration, whereby it is possible to eliminate insufficient pressure of the solar water heater, and when the temperature of hot water from the solar water heater side is too high as raw water for the automatic water heater. The pressurizing device 10 which can make full use of the solar heat energy obtained by the solar water heater as the hot water whose temperature is equal to or lower than the set temperature at the time of the hot water supply by actively mixing the tap water with the hot water.
0 can be provided.

According to the second aspect of the present invention, the pressurizing device 100 according to the first aspect may be configured such that “the space between the first hot water supply pipe 301 of the automatic water heater 300 and the first discharge port 11 of the case 10 is changed. In addition, a switching three-way valve 40 that can selectively perform hot water supply to the hot water supply pipe 310 located on the downstream side from the first hot water supply pipe 301 side or the first discharge port 11 side is provided. By using the switching three-way valve 40, the hot water from the solar water heater 200 can be used completely independently of the automatic hot water heater 300. " In addition to achieving the same object as the invention according to claim 1 above, it is possible to select so that hot water from the solar water heater can be performed without passing through the automatic water heater, and to obtain solar heat energy obtained by the solar water heater. Ten Pressure can be exploited apparatus 1
00 can be provided.

[Brief description of the drawings]

FIG. 1 is a system diagram showing a state in which a pressurizing device according to the present invention is interposed between a solar water heater and an automatic water heater.

FIG. 2 is a schematic perspective view of the pressurizing device.

FIG. 3 is a piping system diagram in the pressurizing device.

FIG. 4 is a sectional view of a mixing valve used in the pressurizing device according to the present invention.

FIG. 5 is a sectional view taken along line 1-1 of FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 100 Pressurizing device 10 Case 11 1st discharge port 12 2nd discharge port 13 Water absorption port 14 Water connection port 20 Pump 21 Supply pipe 22 Flow switch 23 Liquid hammer 30 Mixing valve 30a Valve main body 31 1st inlet 32 Second Inflow port 33 Outflow port 34 Sensing flow path 35 First flow path 36 Second flow path 37 Temperature sensing means 38 Valve hole 40 Switching three-way valve 50 Control device 200 Solar water heater 300 Automatic water heater 301 First hot water supply pipe 302 Second hot water supply Pipe 310 Hot water supply pipe 400 Water supply pipe 500 Bath 501 Shower device 502 Hot water supply pipe 600 Mixing faucet

Claims (2)

[Claims] 1. An automatic water heater which is interposed between a solar water heater, an automatic water heater which is activated only when a raw water temperature to be heated at the time of hot water supply is equal to or higher than a predetermined value, and a water pipe to the automatic water heater at the time of hot water supply. A water supply from the solar water heater side by using hot and cold water from the solar water heater side. Connected to the downstream side of
A mixing valve having a first inlet for receiving hot water from the pump, a second inlet connected to the water pipe side, and an outlet connected to the automatic water heater side; A case for accommodating a pump, a first discharge port and a second discharge port respectively connected to a first inlet and an outlet of the mixing valve, and water absorption connected to the pump. Forming a port and a water connection port connected to the second inlet, when the automatic water heater needs raw water for hot water supply,
The hot water from the solar water heater and the water from the water pipe are mixed in the mixing valve to form hot water at a temperature equal to or lower than the temperature set in the automatic water heater, and A pressurizing device, wherein hot water is discharged from the second discharge port to the automatic water heater. 2. A method according to claim 1, wherein hot water is supplied to the hot water pipe located downstream from the first hot water pipe between the first hot water pipe of the automatic water heater and the first discharge port of the case. The first
By interposing a switching three-way valve that can selectively perform whether from the discharge port side and using this switching three-way valve, hot water from the solar water heater is completely unrelated to the automatic water heater. 2. The pressurizing device according to claim 1, wherein the pressurizing device can be used for: