JPH0712405A - Hot water storage tank - Google Patents

Abstract

PURPOSE:To provide a horizontal type hot-water reserving tank, capable of realizing the lamination of temperature as well as sure delivering of hot-water with a simple structure. CONSTITUTION:A honeycomb body 16, consisting of a plurality of fine tubes 16a constituted of a heat resistant material, is arranged in a horizontal type hot-water reserving tank, having a water feeding port at one end and a hot-water discharging port 13 at the other end, so that spaces R1, R2 are remaining between the water supplying port 12, provided at the inlet port side of the honeycomb body 16, and the hot-water discharging port 13 provided at the outlet port side of the honeycomb body 16.

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 tank such as a water heater and an electric water heater, and more particularly to the internal structure of a horizontal hot water storage tank.

[0002]

2. Description of the Related Art FIG. 23 is a diagram showing the construction of a conventional hot water storage tank applied to an electric water heater. In the figure, 1 is a main body of an electric water heater, 2 is a vertical hot water storage tank provided in the main body 1, 3 is a heater provided in the hot water storage tank 2,
The water in the hot water storage tank 2 is heated. Reference numeral 4 is a water supply pipe connected to the lower portion of the hot water storage tank 2 to supply water into the hot water storage tank 2.
A water stopcock, a pressure reducing valve (not shown) and the like are connected, and a water pipe or the like serving as a water source is connected to the tip portion. Reference numeral 5 denotes a hot water outlet pipe which is connected to an upper portion of the hot water storage tank 2 and which discharges hot water boiled in the hot water storage tank 2. A safety valve (not shown) or the like is connected to the hot water storage tank 2 and a faucet is connected to a tip portion thereof. .

The electric water heater thus constructed is
Water is supplied from the water supply pipe 4 into the hot water storage tank 2 while the water stop valve is opened and the water pressure is adjusted by the pressure reducing valve to fill the hot water storage tank 2 with water.
Then, when the heater 3 is energized to heat the water in the hot water storage tank 2, the water in the hot water storage tank 2 moves high temperature water upward and low temperature water downward due to the difference in specific gravity, and the water in the hot water layer and the low temperature layer is almost It is boiled while being separated into layers, and the electric water heater is ready for hot water supply. Then, the boiled hot water is discharged from the hot water discharge pipe 5 by opening the faucet. At this time, the amount of water discharged is supplied from the water supply pipe 4 into the hot water storage tank 2, and the high temperature water below does not mix with the low temperature water that has been supplied, and is separated into almost two layers. It is pushed upwards. In the state of being separated into two layers, a mixed layer exists between the high temperature water and the low temperature water as shown in FIG.

[0004]

The conventional hot water storage tank 2 as described above can effectively utilize the temperature stratification, that is, the water in the hot water storage tank 2 is separated into two layers, a high temperature layer and a low temperature layer. The vertical type is used so that hot water can be supplied reliably. However, in order to maintain this temperature stratification, it is necessary to make the vertical hot water storage tank 2 into a long cylindrical shape. Therefore, an installation space is required in the depth of the hot water storage tank 2, that is, in the height direction. It was inconvenient to receive many treatments. In addition, it has been a big problem to secure this installation place when arranging the vertical type hot water storage tank.

Therefore, in order to solve such a problem,
For example, as disclosed in JP-A-1-102244, a hot water outlet is provided at an upper convex portion of a horizontal type hot water storage tank having convex and concave portions, a water inlet at a lower convex portion, and a heater and water at a bottom of a lower convex portion. There is a baffle that reduces the flow of water at the opposite part of the mouth, a thermostat and a tank support are attached at appropriate places, and a hot water storage tank is covered with a heat insulating material. However, this horizontal type hot water storage tank has slopes from both ends in order to make the top and bottom of the hot water storage tank so that the hot water in the hot water storage tank can be discharged efficiently. Therefore, it takes time and effort to design and manufacture the structure of the tank.

The present invention has been made to solve the above problems, and provides a horizontal hot water storage tank which can realize temperature stratification with a simple structure and can reliably discharge hot water. It is intended for.

[0007]

A hot water storage tank according to a first aspect of the present invention is a horizontal hot water storage tank having a water supply port at one end and a hot water outlet at the other end. The honeycomb body is formed by leaving a space between the water supply port and the tap hole provided on the inlet / outlet side of the honeycomb body.

A second invention is a horizontal type hot water storage tank having a water supply port at one end and a hot water discharge port at the other end, and a plurality of porous plates partitioning the water supply port inside the hot water storage tank from the hot water discharge port. Are arranged at a predetermined interval.

According to a third aspect of the present invention, in a horizontal type hot water storage tank having a water supply port at one end and a hot water discharge port at the other end, a partition plate for partitioning the water supply port and the hot water discharge port inside the hot water storage tank is predetermined. A plurality of partition plates are arranged at intervals, and a plurality of partition plates are provided with gaps alternately at symmetrical positions, and a flow channel is formed by the partition plates and the gaps.

A fourth aspect of the present invention is a horizontal type hot water storage tank having a water supply port at one end and a hot water discharge port at the other end, and a spiral partition plate between the water supply port and the hot water discharge port inside the hot water storage tank. And the partition plate forms a spiral flow channel.

A fifth aspect of the invention is to provide a water supply port at a lower portion on one end side,
In a horizontal hot water storage tank having a tap hole at the upper end on the other end side, a deceleration means for reducing the water flow velocity is provided at the water supply port.

A sixth aspect of the invention is to provide a water supply port at a lower portion on one end side,
In a horizontal type hot water storage tank with a tap hole at the top,
The water supply port is provided with a deceleration means for reducing the water flow velocity.

According to a seventh aspect of the present invention, in a horizontal type hot water storage tank, a water supply port provided at a lower portion of an end portion thereof and a hot water outlet provided at an upper portion of the end portion thereof are provided with speed reducing means for reducing a water flow velocity. Is.

An eighth aspect of the invention is to provide a water supply port at a lower portion on one end side,
In a horizontal type hot water storage tank having a tap hole at the upper end of the other end, a water supply port to which a water supply pipe is connected is provided with deceleration means for reducing the water flow rate, and the side where the tap port is provided is higher than the other end side. Thus, it is tilted by a predetermined angle.

In a ninth aspect of the present invention, one or a plurality of porous members are arranged at a predetermined interval so that the speed reducing means faces the water supply port or the hot water outlet.

[0016]

In the first aspect of the present invention, a honeycomb body composed of a plurality of thin tubes is provided inside a horizontal hot water storage tank, and a space is provided between the water supply port and the hot water outlet provided on the inlet / outlet side of the honeycomb body. Since the hot water is tapped from the hot water outlet, the amount of tapped water is supplied from the water supply pipe to the hot water storage tank and is divided into the thin tubes of the honeycomb body to flow toward the hot water pipe side. At this time, the high temperature water stored in the hot water storage tank is pushed out toward the hot water outlet side by the water pressure of the supplied low temperature water, and only the high temperature water is reliably discharged.

In the second to fourth inventions, a plurality of porous plates for partitioning the water supply port and the hot water outlet inside the horizontal type hot water storage tank are arranged at a predetermined interval, and are alternately symmetrical. A plurality of partition plates having a gap at the position are arranged at a predetermined interval to form a flowing water channel by the partition plates and the gap, or a spiral partition plate is arranged and a spiral flowing water channel is formed by the partition plates. By forming the, the high temperature water stored in the hot water storage tank is pushed to the outlet side by the water pressure of the supplied low temperature water, without mixing with the low temperature water,
The hot water is definitely discharged.

According to the fifth aspect of the invention, the horizontal type hot water storage tank is provided with a water supply port at a lower portion on one end side, a hot water outlet port at an upper end portion on the other end side, and a deceleration means is provided at the water supply port. When tapping hot water, the low temperature water supplied from the water inlet is decelerated by the speed reducer, so the supplied low temperature water does not diffuse in the hot water storage tank, and the high temperature water stored in the hot water storage tank mixes with the low temperature water. It is surely discharged from the outlet without doing.

According to the sixth aspect of the invention, a water supply port is provided at the lower part of one end of the horizontal type hot water storage tank, and a hot water outlet is provided at the upper part.
Since the speed reducer is provided at the water inlet, the low temperature water supplied from the water outlet is decelerated by the speed reducer when the hot water is discharged from the hot water outlet, so that the supplied low temperature water does not diffuse in the hot water storage tank. The high-temperature water stored in the tank is surely discharged from the outlet without mixing with the low-temperature water. Moreover, the work of connecting the water supply pipe and the hot water discharge pipe becomes easy.

In the seventh aspect of the present invention, since the water supply port is provided at the lower part of the end of the horizontal type hot water storage tank, the hot water outlet is provided at the upper part of the end, and the speed reducing means is provided at the water supply port and the hot water outlet. The water flow is slowed down by the speed reducer both when water is supplied from the water supply port that accompanies tapping from the spout and when hot water is stored in the hot water storage tank. Hot water can be discharged and stored.

In the eighth aspect of the present invention, the horizontal type hot water storage tank is provided with a water inlet at the lower end on one end side, a hot water outlet at the upper end on the other end side, a speed reducing means is provided at the water inlet, and a hot water outlet is provided. Since the tilted side is tilted at a predetermined angle so that it is higher than the other end side, the low-temperature water supplied from the water supply port is decelerated by the speed reduction means when tapping from the hot water outlet, so the supplied low-temperature water is stored in the hot water storage tank. The high-temperature water stored in the hot-water storage tank without being diffused at 1 is reliably discharged from the outlet without mixing with low-temperature water, and the discharge efficiency is further improved.

In the ninth aspect of the invention, since the speed reducing means is arranged such that one or a plurality of porous members are arranged at a predetermined interval so as to face the water supply port or the hot water outlet, the speed can be reduced with a simple structure and the degree of deceleration. Can be changed appropriately.

[0023]

【Example】

Example 1. 1 is a vertical sectional view of a first embodiment of the present invention,
2 is a plan view of FIG. 1 with a part thereof shown in cross section. In the figure, reference numeral 11 is a horizontal type hot water storage tank disposed in, for example, a water heater, 12 is a water supply port, 13 is a hot water discharge port, and a water supply pipe 14 or a hot water discharge pipe 15 is connected thereto, respectively. Reference numeral 16 denotes a honeycomb body composed of a plurality of thin tubes 16a made of a non-thermally conductive and heat-resistant material such as plastic. The thin tubes 16a are arranged horizontally, and the inlet / outlet side thereof, that is, the water supply port 12 of the hot water storage tank 11, And the hot water outlet 13 is provided inside the hot water storage tank 11 so that different space portions R1 and R2 are formed. In addition, the thin tubes 16a of the honeycomb body 16 are independent of each other, and the water supplied from the water supply pipe 14 into the hot water storage tank 11 is divided into the thin tubes 16a, respectively, and is not mixed with the water of the other thin tubes 16a. Flows to.

In this embodiment constructed as described above, when hot water of, for example, 60 ° C. is stored in the hot water storage tank 11 and tapped from the tap pipe 15, the amount of tapped water is fed from the feed pipe 14. Water is supplied into the hot water storage tank 11. The supplied water is supplied to the honeycomb body 16 through one space R1.
Is divided into the respective thin tubes 16a, and the other space R2
It flows to. At this time, the thin tube 16a of the honeycomb body 16
The high temperature water stored in the inside and the low temperature water supplied are trying to be separated vertically due to the difference in specific gravity.
Since the diameter of the thin tube 16a is small and long, the thin tube cannot be vertically separated, and the hot water in the thin tube 16a is pushed out into the space R2 by the water pressure of the low temperature water before the separation or the like occurs.
Then, the high temperature water pushed out into the space R2 is supplied to the outside of the hot water storage tank 11 without being mixed with the low temperature water.

Example 2. FIG. 3 is a longitudinal sectional view of a second embodiment of the present invention, and FIG. 4 is a plan view of FIG. 3 showing a part of the cross section. The honeycomb body 16 is arranged so that different space portions R1 and R2 are formed in the upper and lower portions of the honeycomb body 11. The water inlet 12 is provided below one side so as to communicate with the space portion R1, and the hot water outlet 13 is provided above the other side so as to communicate with the space portion R2.

Also in this embodiment configured as described above, when hot water discharge from the hot water storage tank 11 is started as in the case described in the first embodiment, the amount of hot water discharged is equivalent to the water supply pipe. Water is supplied to the lower space portion R1 from 14 through the water supply port 12. Then, the high temperature water stored in the hot water storage tank 11 rises in the thin tube 16a of the honeycomb body 16 by the water pressure of the supplied low temperature water, and the upper space portion R2.
And flows out of the hot water outlet pipe 15. At this time, the high-temperature water is vertically separated by stratification, and is surely discharged without being mixed with the low-temperature water.

Example 3. FIG. 5 is a vertical cross-sectional view of a third embodiment of the present invention. In this embodiment, the honeycomb body of the first embodiment is formed so that a plurality of layers S1, S2, S3, S4 are formed in the hot water storage tank 11. A plurality of porous plates 17 made of the same material as 16 are arranged at a predetermined interval so as to partition the water supply port and the hot water outlet. The number of the porous plates 17 arranged in the hot water storage tank 11 is not limited to the number in the above embodiment, and can be changed appropriately.

Also in this embodiment configured as described above, when hot water discharge from the hot water storage tank 11 is started in the same manner as in the case described in the first embodiment, the amount of hot water discharged is supplied to the water supply pipe. Water is supplied from 14 to the hot water storage tank 11.
The supplied low temperature water passes through the porous plate 17 while pushing the high temperature water in the hot water storage tank 11 by its water pressure, flows from the layer S1 to the layer S2, and from the layer S2 to the layer S3, and at the same time, the high temperature water also exits the hot water outlet pipe 15 Push it to the side. At this time, each layer S1, S2 ...
A part of the low temperature water flowing inside tries to be separated into upper and lower due to the difference in specific gravity, but most of the high temperature water is pushed out to the next layer by the water pressure without mixing with the low temperature water and stored in the hot water storage tank 11. Only the hot water that has been supplied is reliably supplied.

In the third embodiment, the peripheral edge of the porous plate 17 is fitted or inserted and fixed so as to abut the inner wall of the hot water storage tank 11 as shown in FIG. Even if there is, most of the high temperature water is pushed out to the hot water outlet pipe 15 side without mixing with the low temperature water.

Example 4. FIG. 6 is a vertical sectional view of a fourth embodiment of the present invention, and FIG. 7 is a plan view of FIG. 6 showing a part of the sectional view. In this embodiment, the gaps B are formed in the hot water storage tank 11 alternately symmetrically in the vertical direction.
A plurality of partition plates 18 made of the same material as that of the honeycomb body 16 are arranged between the water supply port 12 and the hot water outlet 13 in the hot water storage tank 11 at a predetermined interval, and the partition plate 18 and the gap B supply water. A running water channel A is formed between the mouth 12 and the outlet 13. The gaps B in the middle of the flowing water passage A are formed alternately in the upper and lower directions, and all are located in the middle of the flow of the flowing water passage A, so that the dead end is not formed. The water inlet 12 and the hot water outlet 13 are provided on the side where the end partition plates 18a and 18b are mounted, that is, on the side without the gaps B1 and B2. In FIG. 6, the water inlet 12 is opposite to the gap B1. On the right end of the hot water storage tank 11 on the side
3 is provided in the lower part of the left end portion of the hot water storage tank 11 on the side opposite to the gap B2. Therefore, there is no fear that a dead end is formed in the vicinity of the water supply port 12 and the hot water outlet 13 on the opposite side of the flow direction of the flowing water channel A.

Also in this embodiment configured as described above, when hot water discharge from the hot water stored in the hot water storage tank 11 is started as in the case described in the first embodiment, the amount of hot water discharged is equal to the water supply pipe. Hot water storage tank 1 from 14 through water supply port 12
Water is supplied to the inside of 1, and the low-temperature water travels along the running water channel A.
Then, the high-temperature water is pushed out by the water pressure of the low-temperature water so as to be extruded in the water flow passage A, and is discharged without being mixed with the low-temperature water.

FIG. 8 shows the hot water storage tank 1 confirmed in the experiment.
1 shows a temperature distribution in the hot water storage tank 11 every 1 minute from the start of hot water discharge when hot water of about 60 ° C. is stored in 1 and discharged.
Here, the hot water storage tank 11 has a diameter of 200 mm and a length of 15
The partition plate 18 having a pitch of 50 mm was used. The water supply flow rate is about 7.6 L / min, which is the flow rate when using in a general kitchen. The hot water storage tank 11 and the hot water outlet pipe 15 are not provided with a heat insulating material. As clearly shown in the color change in the figure corresponding to the temperature change over time, when the water is supplied from the water supply port 12, the supplied low-temperature water travels along the running channel A, and the high-temperature water is cooled to the low temperature. The hot water is discharged from the hot water outlet 13 with almost no mixing with water.

FIG. 9 is a drawing characteristic of hot water discharged from the hot water outlet 13 obtained in the above experiment, which is about 8% of the total hot water storage capacity of the initial high temperature water of about 60 ° C.
It shows that 5% of high temperature water is discharged. That is, a high efficiency of about 90% was obtained as the takeout efficiency. This is because the high temperature water and the low temperature water are not mixed with each other and only the high temperature water is surely pushed out while maintaining the temperature stratification as shown in the temperature distribution diagram of FIG.

In the above-described second embodiment, since the space portions R1 and R2 are provided above and below, the water supply port 12 is provided below one end side, and the hot water outlet 13 is provided above the other end side. In the above, since a single running water channel A was formed from the water supply port 12 to the hot water outlet 13, the water supply port 12 and the hot water outlet 13 need only be on different sides. , Both may be provided above, or both may be provided below. Whether the water supply port 12 and the hot water outlet 13 are provided above or below depends on how the gaps B1 and B2 formed by the partition plate closest to the water supply port 12 or the hot water outlet 13 are provided.

Example 5. FIG. 10 is a vertical cross-sectional view of a fifth embodiment of the present invention. In this embodiment, the same material as that of the honeycomb body 16 of the first embodiment is provided between the water supply port 12 and the hot water outlet 13 in the hot water storage tank 11. A spiral partition plate 19 having a structure is arranged, and a low-temperature water supplied from the water supply port 12 into the hot water storage tank 11 is formed along the partition plate 19 so as to spirally flow while forming a flowing water passage A. .

By virtue of such construction, the fourth embodiment
The same action and effect as can be obtained. That is, the high temperature water stored in the hot water storage tank 11 is pushed out through the flow passage A formed by the spiral partition plate 19 due to the water pressure of the supplied low temperature water, and is almost mixed with the low temperature water. It is certainly discharged without hot water. Moreover, since the flowing water channel A is spirally swirling, the flowing water resistance is small and the flow becomes smooth as compared with the above-described embodiment.

Although the hot water storage tank 11 is not provided with the heating means in the above-described first to fifth embodiments, it may be provided with the heating means as in the conventional example shown in FIG. The same action and effect as the example can be obtained.

Example 6. In Examples 1 to 5 described above, the temperature stratification in the hot water storage tank is realized by providing the honeycomb body 16, the partition plate 18, etc. in the hot water storage tank 11, but a speed reducing means is provided at the water supply port or the hot water outlet. By this, temperature stratification can be realized. The examples will be described below as Examples 6 to 10.

FIG. 11 is a longitudinal sectional view showing the structure of a horizontal type hot water storage tank according to the sixth embodiment, in which a speed reducing means is attached to the water supply port.
12 is a cross-sectional view taken along the line AA of FIG. 11, and FIG. 13 is a perspective view showing the structure of the speed reducer. In the figure, the same reference numerals as those in FIG. 1 indicate the same or corresponding parts, and the description thereof will be omitted. Reference numeral 12 is a water supply port provided at a lower portion on one end side of the hot water storage tank 11 to which a water supply pipe 14 is connected, and 13 is a hot water outlet port provided at an upper end on the other end side of the hot water storage tank 11 to which a hot water delivery pipe 15 is connected. ing. It should be noted that FIGS.
In FIG. 10, since the hot water storage tank is schematically shown, the structure of the connecting portion of the water supply pipe 14 and the hot water discharge pipe 15 is omitted. Reference numeral 20A is a speed reducing means provided in the water supply port 12 for reducing the water flow velocity, and as shown in FIG.
Is a box body in which two perforated plates 21A are arranged at a predetermined interval so as to face each other. In this embodiment, the predetermined interval is 60 mm.

First, high-temperature water is stored in the hot water storage tank 11 constructed as described above. From this state, when hot water in the hot water storage tank 11 is tapped from the hot water tap pipe 15, the amount of tapped water is supplied from the water feed pipe 14 to the hot water storage tank 11 through the water feed port 12 and the speed reduction means 20A. Since the water flow at the time of water supply is weakened by the speed reducing means, the supplied water spreads below the hot water storage tank 11 and gradually pushes the hot water upward from below. The details of the operation at this time will be described based on FIGS. 14 to 17 by comparing the case where the speed reducing means is provided and the case where the speed reducing means is not provided in this embodiment.

FIG. 14 is a temperature distribution diagram showing a temperature distribution in the hot water storage tank 11 by an experiment when there is a speed reducing means in this embodiment, and FIG. 15 is a discharge temperature characteristic of hot water discharged from the discharge port 13 in FIG. FIG. 16 is a temperature distribution diagram showing a temperature distribution in the hot water storage tank 11 obtained by an experiment in which no speed reducing means is provided, and FIG. 17 is the hot water outlet 1 in FIG.
FIG. 3 is a temperature characteristic diagram of hot water discharged from No. 3;

The temperature distribution chart shown in FIG. 14 is similar to that of FIG. 8 except that the hot water storage tank 11 of FIG.
The figure shows the temperature distribution every 1 minute from the start of hot water discharge when hot water of about 60 ° C. is stored in the hot water. The experimental conditions are shown in Figure 8.
It is almost the same as the case of, and the diameter of the hot water storage tank is about 200 m
m, length 1500 mm, tap water flow rate about 7.5 L / min,
Further, the deceleration by the deceleration means 20A is 1/25, and actually 1.59 m / s is decelerated to 0.064 m / s. The hot water storage tank 11 and the hot water outlet pipe 15 are not provided with a heat insulating material.

As shown in this temperature distribution diagram, when water is supplied, the flow velocity is reduced by the speed reducing means 20A provided at the water supply port 12 in the hot water storage tank 11, and along the bottom surface in the hot water storage tank 11. It gradually flows toward the other end so as to sneak under the high-temperature water, and due to the difference in specific gravity, the high-temperature water and the low-temperature water supplied do not mix, and are well separated into the high-temperature water side and the low-temperature water side, that is, The thermal stratification is successful and the hot water is pushed upward while maintaining this thermal stratification. What should be noted in this temperature distribution diagram is that the proportion of the mixed layer at the boundary separating the high temperature water and the low temperature water is small. That is, the amount of high temperature water and low temperature water mixed is small. When the proportion of this mixed layer increases, the proportion of the high-temperature water that can be tapped out of the total hot water storage capacity decreases accordingly, and the tapping performance deteriorates.

FIG. 15 shows the outlet temperature characteristics of the hot water discharged from the outlet pipe 15 in the case shown in FIG. 14, and like the case of Example 4, of the total hot water storage capacity of the initial high temperature water of about 60 ° C. It indicates that about 90% of high temperature water is discharged. That is, a high efficiency of about 90% was obtained as the takeout efficiency. This is because the high temperature water and the low temperature water are not mixed as shown in the temperature distribution diagram of FIG. 14 and only the high temperature water is surely extruded while maintaining the temperature stratification. Because there are few. Also, in the experiment, about 85 to 90 at the flow rate of tapping water of about 5.0 to 12.0 L / min.
% Extraction efficiency was obtained. The outlet of the hot water storage tank in this embodiment is located at a position of 5/6 of the diameter of the hot water storage tank. Therefore, if the tap hole is provided further above, the extraction efficiency is further improved.

On the other hand, FIG. 16 shows a hot water storage tank having a water supply port at the lower portion on one end side and a hot water outlet port at the upper end on the other end side, similar to FIG. 11, when the speed reducing means is not attached to the water supply port. The temperature distribution in the hot water storage tank when hot water of 60 ° C. is stored and discharged is shown. The conditions of the experiment are the same as in the case where the speed reducing means shown in FIG. 14 is provided. This Figure 1
As shown in the temperature distribution chart of 6, when there is no deceleration means,
When water is supplied from the water supply port 12, diffusion occurs in the hot water storage tank 11 due to the water flow of the supply water at the time of water supply, and since the hot water storage tank 11 is a horizontal type, temperature stratification is not performed well and the hot water storage tank 11 is The temperature of the hot water will be lowered overall. In this way, since the diffusion occurs in the hot water storage tank 11 and the hot water temperature decreases, the hot water temperature starts to drop shortly after the hot water starts, as shown in FIG. Therefore, the take-out efficiency is about 10% and the tapping performance is very poor.

As described above, the speed reducing means 20 is attached to the water supply port 12.
In the horizontal type hot water storage tank provided with A, the high temperature water is pushed upward while keeping the temperature stratified well without mixing the high temperature water and the supplied low temperature water. Only the hot water can be reliably discharged.

Example 7. In the sixth embodiment, the water supply port 12 is provided at the lower part on one end side of the hot water storage tank 11, the hot water outlet 13 is provided at the upper part on the other end side, and the speed reducing means 20A is provided at the water supply port 12. An embodiment in which 13 is provided on the same side as the water supply port 12 is shown as Embodiment 7 with reference to FIG. In the figure, the same reference numerals as those in FIG. 11 indicate the same or corresponding parts, and the description thereof will be omitted.

Also in the seventh embodiment, as in the case of the sixth embodiment, when the hot water stored in the hot water storage tank 11 is tapped from the tap opening 13, the amount of tapped water is supplied from the feed port 12. Water is supplied, the flow velocity is reduced by the speed reducing means 20A provided at the water supply port 12, flows toward the other end side so as to dive under the high temperature water along the bottom surface in the hot water storage tank 11, and due to the difference in specific gravity, the high temperature water The temperature stratification is successfully performed by forming a separation layer without mixing with the supplied low temperature water. Then, while maintaining this temperature stratification, the high temperature water is pushed upward, and only the high temperature water is surely discharged from the discharge port 13 to the discharge pipe 15. Further, if the water supply port and the hot water outlet port are provided on one end side of the hot water storage tank in this way, the connection between the water supply pipe and the hot water outlet pipe becomes easy, and the space for piping is not required.

Example 8. In Examples 6 and 7 above,
Although the case where the speed reducing means 20A is provided only at the water supply port 12 is shown, it may be provided at the hot water outlet 13 as well.
The deceleration means on the 3 side works effectively when hot water is stored in the hot water storage tank 11 from the hot water outlet 13. An embodiment in this case will be described as an eighth embodiment with reference to FIGS. 19 and 20.

FIG. 19 shows a hot water storage tank 11 shown in FIG. 11 in which speed reducing means is also attached to the hot water outlet 13 side. In FIG. 19, the same reference numerals as those in FIG. 11 designate the same or corresponding parts, and the description thereof will be omitted. To do. 20B is outlet 1
3 is a speed reducing means, and 21B is a speed reducing means 20B.
And is a perforated plate arranged so as to face the tap hole 13. In addition, here, the deceleration means 20A and the deceleration means 20
B is the same.

FIG. 20 is a schematic diagram showing a system for hot water discharge and hot water storage using the hot water storage tank 11 shown in FIG. In the figure, 22 is a switching valve that switches piping between hot water storage and hot water storage, 23 and 24 are heat exchangers and heat pump devices for heating low-temperature water and storing it in the hot water storage tank 11, and 25 is from the water supply port 12. A circulation pump for discharging the water in the hot water storage tank 11 and sending it to the hot water outlet 13 side is an on-off valve for opening and closing the water supply pipe 14.

In this system, when tapping water, the switching valve 22 is switched to the tap pipe side so that hot water is tapped from the tap pipe 15, and the opening / closing valve 26 is opened to feed the amount of tapped water from the tap pipe 14. . The operation of tapping water from the tapping pipe 15 has deceleration means only at the water supply port 12 in FIG.
3 is the same as the case of the hot water storage tank 11 having no speed reducing means. That is, when hot water stored in the hot water storage tank 11 is discharged from the hot water discharge pipe 15 via the speed reducing means 20B, the discharged water flows from the water supply pipe 14 through the speed reducing means 20A provided at the water supply port 12. The hot water is supplied into the hot water storage tank 11, and the high temperature water and the low temperature water are well separated and the high temperature water is pushed out upward. When tapping hot water, the speed reducing means 20B attached to the tap hole 13 causes some resistance, but does not affect the temperature stratification.

Next, when the hot water in the hot water storage tank 11 is used and the low temperature water is filled in the hot water storage tank 11, it is necessary to store hot water in the hot water storage tank 11 again. In this case, the on-off valve 26 is closed, low-temperature water is discharged from the water supply port 12, heated by the heat exchanger 23 and the heat pump 24, circulated by the circulation pump 25, and the hot water outlet pipe 15 and the speed reducing means 2 are circulated.
Hot water is stored in the hot water storage tank 11 via 0B. In the process of storing hot water, the flow velocity is slowed down by the speed reducing means 20B, so that hot water above the hot water storage tank 11 and the inside of the hot water storage tank 11 are stored in the same manner as when water is supplied from the water supply port having the speed reduction means. Hot water storage tank 1 while maintaining temperature stratification without mixing with low temperature water below
1, the hot water is gradually and efficiently stored at a predetermined hot water temperature.

Example 9. Next, as a ninth embodiment, a hot water storage tank having a water supply port at a lower part on one end side of the hot water storage tank and a hot water discharge port at an upper part thereof, in which a speed reducing means is provided at the water supply port and the hot water discharge port, 21. 21, the same symbols as those in FIG. 19 denote the same or corresponding portions, and the description thereof will be omitted.

In the hot water storage tank 11 of FIG. 21 having such a structure, hot water is discharged and hot water is stored using the system shown in FIG. 20, and its operation is the same as in the eighth embodiment. That is, when tapping water, the switching valve 22 is switched to the tapping pipe side so that hot water is tapped from the tap pipe 15, the on-off valve 26 is opened, and the amount of tapped water is supplied from the water supply pipe 14 via the speed reducing means 20A. To be done. At this time, the high-temperature water and the low-temperature water are well separated and the high-temperature water is pushed out upward. It is to be noted that when tapping hot water, the deceleration means 20B attached to the tap opening 13 causes some resistance, but the temperature stratification is not affected, as in the eighth embodiment.

Next, also in the process of storing hot water in the hot water storage tank 11, the opening / closing valve 26 is closed, the low temperature water is discharged from the water supply port 12, and the heat exchanger 23 and the heat pump 24 are used as in the case of the eighth embodiment. Is heated by the circulating pump 25, and is circulated by the circulation pump 25 to store hot water in the hot water storage tank 11 through the hot water discharge pipe 15 and the speed reducing means 20B. At this time, the high temperature water above the hot water storage tank 11 to be stored and the low temperature water below the hot water storage tank 11 are not mixed, and a predetermined temperature is gradually increased from above the hot water storage tank 11 while maintaining temperature stratification. The hot water is stored efficiently.

In this embodiment, since the water supply port and the hot water outlet are provided on one end side of the hot water storage tank, the connection between the water supply pipe and the hot water discharge pipe is facilitated and the space for the pipe is provided as in the case of the seventh embodiment. I will not take it.

Example 10. Next, as shown in Examples 6 and 8, the hot water storage tank 11 having a structure in which the hot water storage tank 11 has a water supply port 12 at the lower end on one end side and a hot water outlet 13 at the upper end on the other end side is inclined at a predetermined angle. The case will be described. By slightly inclining the hot water storage tank so that the side where the hot water outlet 13 is provided is higher than the other end, the hot water extraction efficiency is improved. This is shown in FIG. FIG. 22 shows a hot water storage tank 11
3 ° so that the side on which the tap 13 is installed is raised
When tilted, it shows a temperature distribution every 1 minute from the start of hot water discharge when hot water of about 60 ° C. is stored and discharged. The conditions of this experiment are the same as in Example 6, the diameter of the hot water storage tank is about 200 mm, the length is 1500 mm, the flow rate of discharged hot water is about 7.5 L / min, and the speed reduction by the speed reducing means 20A is 1/25. No heat insulating material is applied to the hot water storage tank 11 and the hot water outlet pipe 15. Looking at this temperature distribution map, 4
It can be seen that high temperature water can be sufficiently taken out even after a minute.

The shapes of the speed reducers 20A and 20B and the perforated plates 21A and 21 shown in the above-mentioned sixth to tenth embodiments.
The number of B, etc. is not limited to this,
As long as it has a similar function, the same operation and effect as those of the above-described embodiment can be obtained. For example, perforated plates 21A, 21B
If the number of sheets is large, the deceleration effect is large, and the degree of deceleration can be adjusted by the aperture ratio and the distance between the plates.

Furthermore, in the sixth to tenth embodiments described above, the speed reducing means is provided inside the hot water storage tank, but the same action and effect can be obtained even if it is provided outside the hot water storage tank.

Further, in the above Examples 1 to 10,
Since all horizontal storage tanks are used, for example, multiple units can be arranged in parallel under the floor or each floor, or multiple units can be arranged vertically between the walls. It is convenient because it can be diversified. Further, it is possible to easily add more units according to the required amount of hot water, and it is possible to distribute the weight so that the weight is not concentrated in one place. Further, if this horizontal hot water storage tank is applied to a water heater, an electric water heater, or the like, an excellent water heater or the like that is not easily restricted by the installation location can be obtained.

[0062]

As described above, according to the first to fourth aspects of the invention, a water supply port provided with a honeycomb body composed of a plurality of thin tubes inside the horizontal hot water storage tank is provided on the inlet / outlet side of the honeycomb body. And, a space portion is left between each of the hot water outlet and the hot water outlet, and a plurality of porous plates that partition the water hot water outlet and the hot water outlet are arranged facing each other at predetermined intervals. A plurality of partition plates with gaps alternately located at symmetrical positions are arranged at a predetermined interval to form a flowing water channel by the partition plates and the gaps, or a spiral partition plate is arranged and spiral flowing water is provided by the partition plates. Since the passage is formed, stratification can be realized with a simple structure even in a horizontal type hot water storage tank, and the high temperature water in the hot water storage tank does not mix with the low temperature water supplied from the water supply port, The hot water is definitely discharged.

According to the fifth aspect of the invention, the horizontal hot water storage tank is provided with a water supply port at a lower portion on one end side, a hot water outlet port at an upper end portion on the other end side, and a deceleration means is provided at the water supply port. When tapping hot water from the hot water from the water supply port, the low temperature water supplied from the water inlet is decelerated by the speed reducer, so the supplied low temperature water does not diffuse in the hot water storage tank, and the high temperature water stored in the hot water storage tank It is surely discharged from the outlet without mixing with water.

According to the sixth aspect of the invention, since the water supply port is provided at the lower part of one end of the horizontal type hot water storage tank and the hot water outlet is provided at the upper part and the speed reducing means is provided at the water supply port, hot water is discharged from the hot water outlet. At this time, the low temperature water supplied from the water supply port is decelerated by the speed reducer, so the supplied low temperature water does not diffuse in the hot water storage tank, and the high temperature water stored in the hot water storage tank must be mixed with the low temperature water. It is surely tapped from the tap. Moreover, the work of connecting the water supply pipe and the hot water discharge pipe becomes easy.

According to the seventh invention, a water supply port is provided at a lower portion of an end of the horizontal type hot water storage tank, and a hot water outlet is provided at an upper portion of the end.
Since the speed reducer is provided at the water inlet and the hot water outlet, the water flow is slowed down by the speed reducer both when water is supplied from the hot water outlet and when hot water is stored from the hot water outlet to the hot water tank. Therefore, without mixing low temperature water and high temperature water,
It is possible to reliably discharge and store hot water.

According to the eighth aspect of the present invention, the horizontal type hot water storage tank is provided with a water supply port at a lower portion on one end side, a hot water outlet port at an upper end portion on the other end side, a speed reducing means is provided at the water supply port, and a hot water outlet port is provided. Since the tilted side is tilted at a predetermined angle so that it is higher than the other end side, the low-temperature water supplied from the water supply port is decelerated by the speed reduction means when tapping from the hot water outlet, so the supplied low-temperature water is stored in the hot water storage tank. The high-temperature water stored in the hot-water storage tank without being diffused at 1 is reliably discharged from the outlet without mixing with the low-temperature water, and the extraction efficiency of the high-temperature water is further improved.

According to the ninth aspect of the invention, since the speed reducing means is arranged such that one or a plurality of porous members are arranged at predetermined intervals so as to face the water supply port or the hot water outlet, the speed can be reduced with a simple structure. The degree can be changed appropriately.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a first embodiment of the present invention.

FIG. 2 is a plan view of FIG. 1 showing a part in section.

FIG. 3 is a vertical sectional view of a second embodiment of the present invention.

FIG. 4 is a plan view of FIG. 3 with a part shown in cross section.

FIG. 5 is a vertical sectional view of a third embodiment of the present invention.

FIG. 6 is a vertical sectional view of a fourth embodiment of the present invention.

FIG. 7 is a plan view of FIG. 6 showing a part in section.

FIG. 8 is a temperature distribution diagram of a hot water storage tank according to a fourth embodiment of the present invention.

FIG. 9 is a tapping water temperature characteristic in the fourth embodiment of the present invention.

FIG. 10 is a vertical sectional view of a fifth embodiment of the present invention.

FIG. 11 is a vertical sectional view of a sixth embodiment of the present invention.

12 is a cross-sectional view taken along the line AA of FIG.

FIG. 13 is a perspective view of a speed reducer.

FIG. 14 is a temperature distribution diagram of a hot water storage tank according to a sixth embodiment of the present invention.

FIG. 15 is a tapped water temperature characteristic in the sixth embodiment of the present invention.

16 is a temperature distribution diagram of the hot water storage tank of FIG. 11 when there is no speed reducer.

FIG. 17 is a hot water outlet temperature characteristic in the hot water storage tank of FIG. 11 when there is no speed reducing means.

FIG. 18 is a vertical sectional view of a seventh embodiment of the present invention.

FIG. 19 is a vertical sectional view of an eighth embodiment of the present invention.

FIG. 20 is a schematic diagram of a system using an eighth embodiment of the present invention.

FIG. 21 is a vertical sectional view of a ninth embodiment of the present invention.

FIG. 22 is a temperature distribution diagram of the hot water storage tank according to the tenth embodiment of the present invention.

FIG. 23 is a structural explanatory view of a conventional hot water storage tank applied to an electric water heater.

[Explanation of symbols]

 4 water supply pipe 5 hot water supply pipe 11 hot water storage tank 12 water supply port 13 hot water outlet 14 water supply pipe 15 hot water supply pipe 16 honeycomb body 16a thin tubes R1, R2 space part 17 porous plate 18 partition plate 19 partition plate A flowing water channel B gap 20A, 20B deceleration means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shin Saito 2-14-40 Ofuna, Kamakura-shi In the Life Systems Development Laboratory, Mitsubishi Electric Corporation (72) Inventor Kazuo Yonamine 730 Kamimachiya, Kamakura Mitsubishi Electric Engineering Shares Company Kamakura Office (72) Inventor Hiroshi Seshita 2-14-40 Ofuna, Kamakura City Mitsubishi Electric Corporation Lifestyle Systems Development Laboratory (72) Inventor Nobuo Otsuka 2-14-40 Ofuna Kamakura City Mitsubishi Electric Corporation Company Life System Development Laboratory

Claims (9)

[Claims] 1. A horizontal type hot water storage tank having a water supply port at one end and a hot water outlet at the other end, wherein a honeycomb body composed of a plurality of thin tubes is provided inside the hot water storage tank on the inlet / outlet side of the honeycomb body. A hot water storage tank, wherein a space is left between the water supply port and the hot water outlet. 2. A horizontal type hot water storage tank having a water supply port at one end and a hot water discharge port at the other end, and a plurality of porous plates partitioning the water supply port and the hot water discharge port inside the hot water storage tank. A hot water storage tank characterized by being arranged at a predetermined interval. 3. A horizontal type hot water storage tank having a water supply port at one end and a hot water discharge port at the other end, and a partition plate for partitioning the water supply port and the hot water discharge port inside the hot water storage tank at predetermined intervals. A plurality of them are arranged apart from each other, and the plurality of partition plates are provided with gaps at alternately symmetrical positions,
A hot water storage tank characterized in that a flowing water channel is formed by the partition plate and the gap. 4. A horizontal hot water storage tank having a water supply port at one end and a hot water discharge port at the other end, wherein a spiral partition plate is provided between the water supply port and the hot water discharge port inside the hot water storage tank. A hot water storage tank, which is arranged and has a spiral flow passage formed by the partition plate. 5. A horizontal hot water storage tank having a water supply port at the lower end on one end side and a hot water outlet at the upper end on the other end side, wherein the water supply port is provided with a speed reducing means for reducing the water flow velocity. Hot water storage tank. 6. A hot water storage tank of a horizontal type having a water supply port at a lower portion on one end side and a hot water outlet port at an upper portion, wherein the water supply port is provided with a speed reducing means for reducing a water flow velocity. 7. The hot water storage tank according to claim 5, wherein the water supply port and the hot water outlet are provided with speed reducing means for reducing a water flow velocity. 8. A horizontal type hot water storage tank having a water inlet at a lower portion on one end side and a hot water outlet at an upper portion on the other end side, wherein the water inlet is provided with a deceleration means for reducing a water flow velocity. A hot water storage tank, which is tilted at a predetermined angle so that the side where it is held is higher than the other side. 9. The decelerating means comprises one or a plurality of porous members arranged at a predetermined interval so as to face the water supply port or the hot water outlet. Hot water storage tank.