JPS6139246Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to the structure of a water storage water heater that can also be used for heating. The heating water tank is not sent to the heating pipe, and the heating water tank is mounted on top of the hot water storage container, so the heating water tank does not require extra space and can be made compact. As the heating water is adjacent to the tank, the heat radiated from the hot water in the hot water storage container is reduced, resulting in less heat loss, and because an air layer is formed at the top of the heating water storage tank, the amount of heat generated is above a certain level. To provide a hot water storage water heater capable of draining hot water drained from a hot water storage container by using a drain pipe for draining water when the hot water rises.

The present invention will be explained in detail below with reference to Examples. 1 has a hot water storage container 4, a water inlet 2 is provided at the lower side of the hot water storage container 1, a hot water supply port 3 is provided near the top end of the top surface of the hot water storage container 1, and a hot water supply pipe is connected from the hot water supply port 3. 2
1 is displayed consecutively. A heat exchanger 4 is provided across the upper part of the hot water storage container 1. This heat exchanger 4 is provided with a large number of baffle plates 6 in a horizontal cylinder 5, a gas burner 7 is provided at one end of the horizontal cylinder 5, and a gas burner 7 is provided at one end of the horizontal cylinder 5.
An exhaust pipe 8 is extended from the other end. Instead of the gas burner 7, electrical heating may be used. The exhaust pipe 8 is provided with an exhaust fan 30. A horizontal tube 9 is fitted around the outer circumference of the heat exchanger 4, and a heating pipe 1 is provided between the outer surface of the heat exchanger 4 and the inner surface of the horizontal tube 9.
1 as a heating heat exchange section 10. heat exchanger 4
is located inside the horizontal tube 9 so as to be offset downward from the axis of the horizontal tube 9. A heating circulation pump (not shown) is disposed in the heating pipe 11, and the outgoing path 11a of the heating pipe 11 is communicated with the upper part of one end of the heating heat exchange section 10. A return path 11b of the pipe line 11 is communicated with a lower part of one end of the heating heat exchange section 10. Outward route 11 of such heating pipe line 11
If the return path 11b and the return path 11b are connected to the heating heat exchange section 10 on the same side of the hot water storage container 1, piping etc. can be easily done. Furthermore, a baffle plate 13 is provided at the intersection of the return path 11b of the heating pipe 11 and the heating heat exchange section 10 to prevent direct advection to the outgoing path 11a. A bypass pipe 15 is disposed on the side of the hot water storage container 1, and a pump 16 for internal circulation is disposed at a suitable position on the bypass pipe 15. The upper inlet 17 at the upper end of the bypass pipe 15 is connected to the heat exchanger 4 at the upper part of the hot water storage container 1.
The lower outlet 18 at the lower end of the bypass pipe 15 is communicated with the lower part of the hot water storage container 1, and the middle outlet 19 at the middle of the bypass pipe 15 is communicated with the middle of the hot water storage container 1. be.
The bypass pipe 15 may have only one outlet. A switching valve 20 such as a three-way valve is provided at the middle intersection of the bypass pipe 15. Hot water storage container 1
A drain pipe 14 is extended from the top end of the top surface of the drain pipe 14, and a safety valve 24 is provided which opens when pressure above a certain level is applied to the drain pipe 14. A heating water reservoir tank 26 with a concave lower surface is mounted on the upper surface of the convex curved surface of the hot water storage container 1 so that the convex curved surface and the concave curved surface are in contact with each other, and the safety valve 24 of the drain pipe 14 and the heating water reservoir tank 26 are mounted on the upper surface of the convexly curved surface of the hot water storage container 1. 26 is provided with a somewhat wide space 22 with an open transparent window 23. The side of the safety valve 24 from the space 22 of the drain pipe 14 is the small diameter pipe 1.
4a, the side closer to the heating water reservoir tank 26 than the space 22 is a large diameter pipe 14b, and the large diameter pipe 14b is submerged in the water of the heating water reservoir tank 26. The above-mentioned heating water reservoir tank 2 is provided on the outgoing route 11a of the heating pipe 11.
6 is inserted, and the connection port 28 of the outgoing path 11a
a and 28b are connected to the heating water reservoir tank 26, respectively. Here, the connection port 28a is connected to the heating heat exchange unit 10 side through a part of the outgoing path 11a, and the connection port 28b and the heating device are connected through a part of the outgoing path 11a. 29 is a drain pipe for draining overflow water.

When the gas burner 7 of the heat exchanger 4 is combusted, hot air flows through the buffle plate 6 of the horizontal cylinder 5 of the heat exchanger 4 and is exhausted from the exhaust pipe 8. At this time, the exhaust fan 30 is being driven and the heat exchanger 4
Hot air is forced to flow into the horizontal cylindrical body 5 and is forced to burn. When the heat exchanger 4 is heated, heat is exchanged with the water in the hot water storage container 1 through the horizontal tube 9, and the water in the upper part of the hot water storage container 1 quickly becomes hot water. At this time, since the horizontal cylinder 9 is fitted around the outer periphery of the heat exchanger 4 so that the heat exchanger 4 is offset downward from the axis of the horizontal cylinder 9, the water in the hot water storage container 1 and the horizontal cylinder 9 The effective heat exchange area between the hot water storage container 1 and the hot water storage container 1 is large, and the heat exchange efficiency is high, so that the water in the hot water storage container 1 quickly becomes hot water.
That is, since the part where the horizontal tube 9 actually exchanges heat is above the heat exchanger 4, if the center of the heat exchanger 4 and the center of the horizontal tube 9 are aligned, the horizontal tube 9
heat exchanges only on about half of its surface, resulting in a small effective heat exchange area and poor heat exchange efficiency. Further, the gas burner 7 is controlled by a thermostat to maintain the hot water in the upper part of the hot water storage container 1 at a constant temperature. The heated hot water is supplied from the hot water supply port 3 through the hot water supply pipe 21 as shown by arrow A, and the supplied amount is injected from the water inlet 2 as shown by arrow D. Usually, only a small amount of hot water is used in the bathroom or kitchen, so even if only the hot water at the top is hot, it can be used sufficiently. By the way, when using a large amount of hot water such as when using a bath, the internal circulation pump 16 is driven to pump hot water from the upper part of the hot water storage container 1 through the bypass pipe 15 as shown by the arrow B from the upper suction port 17. By discharging hot water from the middle discharge port 19 to the bottom discharge port 18, hot water is circulated and the middle and lower portions of the hot water storage container 1 are also heated to a high temperature. At this time, depending on the amount of hot water to be used, the switching valve 20 is switched to discharge hot water from the middle outlet 19 or the lower outlet 18, and it is possible to select whether to raise the temperature to the middle of the hot water storage container 1 or to raise the temperature to the entire hot water storage container 1. do. On the other hand, when the heating circulation pump is driven, heat is circulated through the heating pipe 11 as shown by arrow C, and heat is sent to the heating device to perform heating. In other words, the gas burner 7 burns and transfers the heat from the heat exchanger 4 to the heating heat exchange section 10.
It can be heated by receiving heat. At this time, since the heat exchanger 4 is deviated downward with respect to the axis of the horizontal tube 9, the water in the heating heat exchange section 10 can be uniformly heated by the heat exchanger 4. In other words, if the axis of the horizontal tube 10 and the axis of the heat exchanger 4 are the same, the water above the heat exchanger 4 will be heated, but the water below will not be heated (due to the specific gravity, hot water will rise to the top and become cold). (because the water goes down). In addition, since the hot water in the upper part of the hot water storage container 1 is high temperature, there is less heat radiation and heat can be exchanged efficiently.Moreover, when heating is started and the temperature of the heat exchanger 4 is low, the hot water in the upper part of the hot water storage container 1 is used. Heat can be given to the heating heat exchange section 10. Further, the condensate flowing in from the return path 11b of the heating pipe 11 is blocked by the baffle plate 13 and the flow direction is changed in a controlled manner, so that the condensate flows directly into the outward path 11b.
It does not go to 1a, but circulates through the heating heat exchange section 10 to exchange heat, and then goes. Further, when the pressure of hot water in the hot water storage container 1 becomes high, the hot water is ejected through the safety valve 24 and is replenished from the drain pipe 14 to the heating water reservoir tank 26.
This state can be confirmed by looking through the transparent window 23. In addition, a drain pipe 14 is led out from the apex of the top surface of this hot water storage container 1, and a hot water supply port 3 is provided near it.
High-pressure waste water containing air is spouted from the drain pipe 14, and hot water containing air bubbles is not supplied from the hot water supply port 3. Furthermore, since the outgoing water flowing through the outgoing path 11a of the heating pipe 11 flows through the heating water reservoir tank 26, it is deaerated in the heating water reservoir tank 26, and hot water that does not contain air bubbles flows through the heating pipe 11. Further, excess water in the heating water reservoir tank 26 is drained from a drain pipe 29. Furthermore, since the space 22 has a larger diameter than the drain pipe 14, even if the drain pipe 29 becomes clogged and water flows back through the drain pipe 14 due to the siphon principle, water will not flow upwards than the space 22. Moreover, since water is drained through the see-through window 23, even if the drain pipe 29 is clogged, water will not flow back into the hot water storage container 1 and will not damage the hot water storage container 1. In addition, although the transparent window 23 is opened in the space 22, the large diameter pipe portion 14b of the drain pipe 14
Since the heat is absorbed by the water in the water replenishment tank 26, heat is lost only from the water surface in the drain pipe 14, and the temperature of the water in the heating water tank 26 does not drop.

As described above, in this invention, a heating water reservoir tank is inserted into the heating pipe, so water containing air is not sent to the heating pipe, which may cause noise or damage to the heating equipment. Moreover, since the heating water reservoir tank is mounted on the top of the hot water storage container, the heating water reservoir tank does not require extra space and can be made compact. Since the storage tank is adjacent to the heating water, heat radiation from the heating water is reduced, and heat radiation from the hot water in the hot water storage container is also reduced, resulting in less heat loss. In addition, a safety valve is installed that opens when a certain level of pressure is applied to the drain pipe, and the tip of the drain pipe is inserted into the heating water tank, leaving a gap in the heating water tank that is wider than the top of the heating water tank. There is a drain pipe for draining overflow water that opens at the upper end at the bottom of the tank, so that an air layer is formed at the top of the heating water tank. Hot water drained from a hot water storage container can be drained using a pipe. In other words, an air layer is required above the heating water tank in order for water containing air to flow into the heating water tank, where it is deaerated, and bubble-free hot water to flow into the heating pipes. In order to secure this air layer, a drain pipe for draining overflow water is provided in the heating water tank, the upper end of which opens below the top surface of the heating water tank through a gap, but this method is not applicable to the present invention. The hot water drained from the hot water storage container is made to flow into a heating water tank, and the hot water drained from the hot water storage container is drained using the above-mentioned drain pipe for draining overflow water, It has the advantage of not requiring a separate long drain pipe to drain the hot water drained from the hot water storage container.

[Brief explanation of drawings]

Fig. 1 is a front sectional view of an embodiment of the present invention, Fig. 2 is a plan view of the same, Fig. 3 is a side sectional view of the heat exchange part of the above, and Fig. 4 is a perspective view of the heating water tank of the above. , Figure 5 is a sectional view of the heating water tank, Figure 6
The figure is an enlarged sectional view of the space same as above, and 1 is a hot water storage container, 10 is a heating heat exchange section, 11 is a heating pipe, 11a is an outgoing path, and 26 is a heating water tank.

Claims (1)

[Scope of utility model registration request] A heating heat exchange part of the heating pipe is provided in the hot water storage container, a heating water tank is mounted on the top surface of the hot water storage container, and the heating water tank is inserted into the outgoing path of the heating pipe. A drain pipe is extended from the top, a safety valve is installed that opens when a certain pressure is applied to the drain pipe, and the tip of the drain pipe is inserted into a heating water tank, and heating is carried out inside the heating water tank. A hot water storage water heater comprising a drain pipe for draining overflow water whose upper end opens below the upper surface of the water storage tank through a gap.