JPS5947215B2 - Hot water tank for both heating and heating - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heating hot water tank, and more particularly to a heating hot water tank that utilizes residual heat of hot water in the hot water tank for indoor heating and drying.

Generally, in hot water tanks that store heated water inside, such as electric hot water tanks, when hot water is not in use,
Even if the outer periphery is covered with an insulating material, the temperature of the hot water will drop if left for a long time, and the hot water will have to be reheated each time.As a result, the heat of the heated water is wasted. In particular, in the case of hot water tanks that store hot water using late-night electricity, there is a problem in that the heat of the hot water is often wasted as there is hardly any hot water being supplied during the night. there were.

In view of the above points, the present invention has been made in order to utilize the heat of hot water in a hot water tank, which gradually releases heat while hot water is not being supplied, as a heat source for heating and drying. The first objective is to provide a heating/heating type hot water tank that can take out air heated by heat exchange with a hot water tank heated by hot water stored inside the tank for indoor heating or drying. The second purpose is to increase the heat exchange capacity with the air heated in the hot water tank by providing heat radiation fins around the outer circumference of the hot water tank, and to cover the outer surface of the air chamber that stores the heated air. The purpose of the present invention is to provide a heating/heating type hot water tank that can securely maintain a heat insulating material layer separated from the outer circumferential surface of the hot water tank by a predetermined distance.The third objective is to provide an outer case that covers the hot water tank. The relatively warm air above the floor of the installation location is exchanged with the high-temperature hot water stored in the upper part of the hot water tank to efficiently extract as much warm air as possible from the air intake port installed approximately in the center of the top and bottom of the tank. The fourth objective is to provide a hot water supply system that can be used for both heating and cooling purposes.The fourth objective is to allow the air intake and heated air outlet to be opened and closed, so that when there is no need to take out heated air, the hot water can be removed from the hot water tank. To provide a hot water tank that can also be used for heating and which can suppress wasteful release of heat.

Furthermore, the fifth objective is to provide a heating/heating type hot water tank that can take out heated air at a scheduled time by timer control, and the sixth objective is to provide a hot water tank that can take out heated air at a predetermined temperature or lower. The purpose is to provide a hot water tank that can be used for both heating and heating without stopping heat exchange and blowing out cold air when the water temperature drops. To provide a hot water tank that can be used for both heating and heating at low cost in the early morning using hot water.

The present invention will be described in detail below based on embodiments shown in the figures.

The heating-type hot water tank according to the present invention includes at least a hot water tank 1 in which hot water is stored inside and the high-temperature water accumulated in the upper part is taken out from a hot water supply pipe 2 and used, and an outer case 3 surrounding the outer peripheral surface of the hot water tank 1. A heat insulating material layer 4 is disposed on the inner surface of the outer case 3 corresponding to the side stones and the top surface of the hot water tank 1 and forms an air chamber 5 between the outer peripheral surface of the hot water tank 1 and the air from outside the outer case 3. Air chamber 5 to introduce into air chamber 5
The air in the air chamber 5 heated by exchanging heat with the air intake port 6 provided at the lower end and the circumferential surface of the hot water tank 1 heated by the hot water stored inside is taken out to the outside of the outer case 3 for use. The main body of the hot water tank is formed by a heated air outlet γ provided at the upper end of the air chamber 5, and in this embodiment, the hot water tank 1 has an electric heater 10 inside. An example is shown in which an electric hot water tank is provided.

The hot water tank 1 is made of a steel plate or synthetic resin, and is formed into a cylindrical shape with a rounded top, as shown in FIG. The hot water case 1 is placed on the bottom plate 9 of the outer case 3.
is mounted, and the entire outer surface of the hot water tank 1 except for the bottom surface is covered with a heat insulating material layer 4 made of glass wool or foamed urethane resin.

The air chamber 5 is formed between the hot water tank 1 and the heat insulating material layer 4 located on the inner surface of the side wall of the outer case 3 and the inner surface of the top cover 11 of the outer case 3 over the entire circumference of the part surrounding the road half of the hot water tank 1. Ru.

This air chamber 5 consists of an annular side chamber formed between the outer surface of the hot water tank 1 and the heat insulating layer 4 on the inner surface of the outer case 3, a cap 12 that fits over the top of the hot water tank 1, and the top surface of the hot water tank 1. It consists of an upper chamber formed in between, and a lateral chamber (Fig. 4).
As shown, the heat dissipation fin 1 has a wave-shaped cross section over the entire circumference.
3 is housed with its inner end in contact with the outer surface of the hot water tank 1 and its outer end in contact with the inner surface of the heat insulating material layer 4.

This radiation fin 13 is a corrugated plate made of a material such as a steel plate, aluminum, or copper having good thermal conductivity, and is wrapped around the outer circumference of the hot water tank 1, and is held in the hot water tank 1 by joining both ends with a joint 14. The heat radiation area of the outer peripheral surface of the tank 1 is increased to increase the heat exchange rate with the air in the air chamber 5, and it also acts as a spacer between the hot water tank 1 and the heat insulating layer 4 surrounding the outside of the air chamber 5.

On the other hand, the above-mentioned cap 12 is also molded from the same material as the radiation fins 13, and the sleeve 1 extends downward from the outer periphery.
As shown in FIG. 6, the radiating fins 13 are overlapped with each other on the outer circumference of the upper end thereof, so that the upper chamber and the side chamber communicate with each other.

Further, as shown in FIG. 2, a part of the cap 12 is in contact with the top surface of the hot water tank 1 to position the cap 12, and the top of the hot water tank 1 is heated to the highest temperature by the hot water stored inside. Heat from the surface is transferred to the cap 12 to increase the heat exchange rate with the air in the upper chamber.

In the above embodiment, both sides of the radiation fin 13 are made into air chambers 5, but the present invention is not necessarily limited to this, and as shown in FIG. The heat dissipating fins 13 may be filled with a layer 4, and the shape of the radiation fins 13 themselves is not limited to the shape shown in FIG. It will be done.

The lower end of the air chamber 5 is connected to the hot water tank 1 as shown in FIG.
It is located approximately in the center vertically, and heat is exchanged between the hot water at a high temperature of 70 to 90°C stored in the upper half of the hot water tank 1 and the air in the air chamber 5.

The air intake port 6 is located at a position corresponding to the lower end of the air chamber 5, and the second
As shown in the figures and FIG. The air is taken into the air chamber 5 through the air intake port 6, heated within the air chamber 5 by heat exchange with the outside surface of the hot water tank 1, and then passed through the heated air intake port I at the upper end of the air chamber 5 into the indoor air via the air supply pipe 8. Send it to heaters, dryers, etc.

The air supply pipe 8 is provided with a blower fan 29 such as a sirocco fan, if necessary.

A first damper 20 that is movable along the circumferential direction is disposed on the outer circumferential surface of the outer case 3 corresponding to each air intake port 6, and the first damper 20 allows the air intake port 6 to be closed manually or automatically as described later. It is opened and closed.

That is, the first damper 20 is formed with a window 21 corresponding to each air intake port 6, and the first damper 20 is connected to the outer case 3.
When the window 21 is rotated around the air intake port 6 and the window 21 matches the air intake port 6, the air intake port 6 is opened, and the other portions other than the window 21 are closed.

Note that this first damper 20 is molded from a material with high heat insulation properties.

Further, a through hole 22 is formed at the lower end of the radiation fin 13 to allow air from the air intake port 6 to be introduced into the inner surface of the radiation fin 13.

On the other hand, the heated air outlet 7 is formed in a part of the cap 12 and is connected to the air supply pipe 8 via a second damper 23 that is opened and closed manually or automatically.

The first damper 20 and the second damper 23 are closed when there is no need to warm the air, thereby preventing unnecessary heat radiation from being performed from the circumferential surface of the hot water tank 1.

In this embodiment, as shown in FIG. 10, both dampers 20 and 23 are connected to the relay (R) normally open contacts r1a-r1b of the timer 30 and the normally closed contacts of the relay (R2) of the temperature control unit 31. (r2), the rain dampers 20 and 23 are automatically controlled to open and close, and the rain dampers 20 and 23 to which the power source E is applied are opened.

The timer 30 includes a clock section T, a time setting section S, a relay drive circuit Rd, and a relay R1.
When the predetermined time set in and the time on the clock section T match, a time coincidence signal issued from the clock section T is sent to the relay R1 via the relay drive circuit Rd, and each normally open contact rla
-r1b is closed and both dampers 20.23 are opened, and the air introduced from the air intake port 6 is heated in the air chamber 5 and sent from the air supply pipe 8 to the heater or dryer.

In this way, both dampers 20 and 23 are set to open automatically by the timer 30, so for example, by setting the set time to the time before waking up early in the morning, hot water heated by electricity late at night can be heated. Before heating, the heat of this low-energy-cost hot water can be used to extract warm air from the air chamber 5 to heat the room.

Further, both dampers 20 and 23 are automatically closed by the function of the temperature control section 31 when the temperature inside the hot water tank 1 falls below a predetermined value, and prevent cold air from being sent from the air chamber 5. Prevents the hot water inside from being lowered by air and the heating efficiency of hot water from decreasing.

The water temperature sensor D is provided approximately in the upper and lower center of the hot water tank 1, and is set at a predetermined temperature (approximately 70°C) by the temperature setting section K.
and the detected temperature are determined by the temperature determining section J, and when the detected temperature is lower than the predetermined temperature, the normally closed contact r2 is opened by a signal sent from the temperature determining section J to the relay R2, and both dampers 20
, 23 are closed.

The component block 33 constituting the temperature control unit, excluding the timer 30 and the water temperature sensor D, is housed on the back side of a cover panel 35 provided on the front side of the outer case 3.
A set time display section 36, a current time display section 37, and a temperature setting dial 38 of the temperature setting section are exposed on the surface of the cover panel 35.

In FIG. 1, 40 is a terminal of the power heater 10, 41 is a water supply pipe to the hot water tank 1, and 42 is a drain of the hot water tank.

In the above embodiment, the hot water tank 1 is connected to the electric heater 1.
Although an example using an electric water heater equipped with
Alternatively, it can be applied to a water heater that stores hot water heated by solar heat.

Note that the air intake port 6 is not limited to the position shown in FIG. 1, and may of course be provided above and below this position, and the air intake port 6 may be provided in multiple stages above and below. .

In this case, the air intake ports 6 on the upper and lower stages are linked according to the temperature change inside the hot water tank 1, and the air intake port 6 in the upper and lower stages is linked.
All you have to do is let some air in.

As described above, the present invention includes a hot water tank in which hot water is stored inside and the high temperature water stored in the upper part is taken out from a hot water supply pipe and used;
an outer case that surrounds the outer circumferential surface of the hot water tank; The air in the air chamber is heated by exchanging heat with the air intake port provided at the lower end of the air chamber and the circumferential surface of the hot water tank, which is heated by the hot water stored inside. The hot water tank body is formed by the heated air intake port provided at the top end of the air chamber for use outside the outer case, so the air introduced from the air intake port at the bottom end of the air chamber is transferred to the hot water tank. In the air chamber between the outer circumferential surface and the heat insulating material layer, the heated air is heated by exchanging heat with the circumferential surface of the hot water tank heated by the hot water stored inside.The heated air is then discharged from the heated air outlet. A heat dissipation fin that can be taken out for indoor heating or drying, and has the effect of serving both hot water supply and space heating, and has one end in contact with the outer surface of the hot water tank and the other end in contact with the inner peripheral surface of the heat insulating material layer. is arranged in the air chamber corresponding to the outer circumferential surface of the hot water tank so that the heat insulating material layer and the outer circumferential surface of the hot water tank are separated by the heat dissipating fins, so that the air heated to the hot water tank by the heat dissipating fins is In addition to increasing the heat exchange efficiency with the air chamber, the heat insulating material layer covering the outer surface of the air chamber storing heated air can be reliably maintained between the outer peripheral surface of the hot water tank and the outer circumferential surface of the hot water tank by a predetermined distance. a first damper that allows the opening surface of the heated air outlet to be opened and closed;
A second damper is disposed on each of the opening surfaces, and a timer is provided to control the opening and closing of the first and second dampers at arbitrary times, and detects when the hot water in the hot water tank falls below a predetermined temperature. Since the temperature controller is provided with a temperature control section that controls the first damper and the second damper so as to close the heated air outlet and the air intake, when there is no need to take out the heated air, the first damper and the second damper are closed. By controlling the damper and closing the openings of the air intake and heated air outlets, wasteful release of heat from the hot water tank can be suppressed, and the air chamber with the openings closed can be used as a heat insulating layer. This has the effect of keeping the temperature of the hot water in the hot water tank warm.

Furthermore, by setting the first and second dampers to a desired time using a timer, for example, before getting up early in the morning, you can use the timer to set the first and second dampers at a desired time, for example, before getting up early in the morning, to reduce energy costs and reduce energy costs. It is possible to heat the room by extracting warm air from the air chamber using the heat of the hot water, and if the temperature inside the hot water tank falls below a predetermined temperature by the temperature control section, the first damper and the second damper By controlling the damper and closing the air intake port and heated air intake port, it is possible to prevent cold air from being sent into the room from the air chamber, and also prevent the hot water in the hot water tank from dropping due to the air. This has the effect of preventing the heating efficiency from decreasing.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway front view showing one embodiment of the present invention, and FIG.
The figure is a side sectional view of the same as above, Fig. 3 is a top view of the same as above, Fig. 4 is a sectional view taken along line X-X in Fig. 1, and Fig. 5 is a Y-Y in Fig. 1.
A line sectional view, FIG. 6 is a partially enlarged perspective view showing the joint part between the radiation fin and the cap used in the above, FIG. 7 is a partially enlarged perspective view showing the lower part of the air chamber in the above, and FIGS. 8 and 9 are FIG. 10 is a partial horizontal sectional view showing various heat dissipation fins applied to the present invention, and a block diagram showing the functions of the timer and temperature control section used in the present invention, in which 1 is a hot water tank, 2 is a hot water pipe, 3 is the outer case, 4 is the insulation layer, 5 is the air chamber, 6
7 is an air intake port, 7 is a heated air outlet, 20 is a first damper, 23 is a second damper, 30 is a timer, 31 is a temperature section, and D is a water temperature sensor.

Claims (1)

[Scope of Claims] 1. A hot water tank that stores hot water inside and uses the hot water collected at the top from a hot water supply pipe, an outer case that surrounds the outer circumferential surface of the hot water tank, and at least the side and top surfaces of the hot water tank. A heat insulating material layer is provided on the inner surface of the outer case to form an air chamber between it and the outer peripheral surface of the hot water tank, and an air layer is provided at the lower end of the air chamber to introduce air from outside the outer case into the air chamber. There is a heated air intake installed at the upper end of the air chamber to take out the air inside the air chamber, which is heated by heat exchange with the surrounding surface of the hot water tank that is heated by the hot water stored inside, and take it out of the outer case for use. A heat dissipating fin that forms a hot water tank main body with the outlet, and has one end in contact with the outer surface of the hot water tank and the other end in contact with the inner circumferential surface of the heat insulating material layer, and the heat insulating material layer and the outer circumferential surface of the hot water tank are separated by the heat dissipating fin. A first damper and a second damper are disposed in the air chamber corresponding to the outer surface of the hot water tank, and are capable of freely opening and closing the opening surfaces of the air intake port and the heated air outlet. A timer is provided to control the opening and closing of the first damper and the second damper at arbitrary times, and the first damper detects when the hot water in the hot water tank falls below a predetermined temperature and closes the heated air outlet and air intake. A hot water tank for heating and heating, characterized by being provided with a temperature control section for controlling a damper and a second damper. 2. The hot water tank for heating and heating as set forth in claim 1, characterized in that air intake ports are provided approximately at the top and bottom of the outer case so that air around the outer case is introduced into the air chamber.