JPS5895149A - Heat pipe type solar heat water heater - Google Patents

Abstract

PURPOSE:To carry out drainage from a water pipe and a hot water discharge pipe, by providing an air breather. CONSTITUTION:A condensing part of a heat pipe 11 whose evaporating part is located on its heat collecting part is located within a hot water tank 2 covered by a heat insulating material 13, a lid 18 having a heat insulating material 17 is provided on the upper part of the hot water tank 2 and a ball tap 20 connecting with a water supply opening 3 inside the hot water tank 2 is provided as well. Then, an air-breather 21 is provided between the water supply opening 3 and the ball tap 21, and a hot water discharge pipe 22 whose air vent pipe 25 is made to open toward the upper part is provided within the hot water tank 2 on a hot water discharge opening 6. Furthermore, an opening of the hot water discharge pipe 22 is made into a valve seat 23, a closing cap 24 is hung down by a wire 9 led outside through a small hole 25 and the closing cap 24 is energized in a closing direction by a spring 26.

Description

[Detailed Description of the Invention] The present invention relates to a solar water heater using a heat sink, and in particular, in a cold region in winter, even if there is some snowfall, sunlight can be obtained during the day, and the heat collecting surface can be heated. This relates to a heat/eve type solar water heater that can be used regardless of the low temperature at night, once the snow has melted or the snow has been removed.

Conventionally, in solar water heaters that combine a heat collector that passes water through the heat collection surface and a hot water storage tank on the roof, the heat collector is destroyed due to volumetric expansion when it freezes, so in areas that freeze in winter, It is prohibited to leave the water supply unattended, and instructions are given to drain water from the hot water storage tank located in and above the heat collection surface. Usually 15 to 201 on the heat collecting surface!
Since there is 180 to 3,000 liters of water stored in the hot water storage tank, it would be a huge waste to drain all of it every time there is a risk of freezing. Therefore, in cold regions,
The reality is that many households drain the water once before winter and do not use it during the winter.

In addition, even if water is drained from the heat collector and therefore from the connected hot water storage tank, water cannot be drained sufficiently from within the water supply hose, especially between the water supply low ball toughs 1 of the hot water storage tank, and this part There were many cases of freezing. If even one part of the water supply hose or hot water outlet hose freezes, the solar water heater becomes unusable, and since the water supply and hot water outlet hoses are covered with insulation material, it is very difficult to unfreeze them. It is. Therefore, electric heaters are sometimes wrapped around the water supply hose and hot water outlet hose, but the electricity bill for this increases considerably, and in some cases, the power consumption exceeds the price of energy obtained from solar heat. Sometimes it was a system.

On the other hand, in the case of a separate type where the solar heat collection surface is usually on the roof and the hot water tank is installed on the ground, etc., it is easy to drain water from the part installed outside, such as inside the heat collection surface. Anti-freezing measures have been taken, but various types of pulp placed outside that are exposed to wind and snow may freeze and stop working, the pulp operating part of beer taps may freeze, the water supply pipes to sol taps may freeze, and heat collecting surfaces may freeze. Water that drips through the anti-freeze valve installed at the bottom freezes on the roof and accumulates, causing the problem that the anti-freezing valve itself becomes filled with ice, making it practically unusable. The purpose of the present invention is to solve such problems, and it is not necessary to drain water from the heat collecting surface, and it can be used even in winter by draining only a small amount of water from the water supply and hot water outlets. To provide a heat pipe type solar water heater that can be used with peace of mind.

Next, the heat and motherboard type solar water heater of the present invention will be explained based on examples. FIG. 1 is a diagram showing the overall configuration of an embodiment of the heat pipe type solar water heater of the present invention.
Figure 2 shows a state in which multiple heat pipe type solar water heaters are installed side by side, where 1 is the collector body, 2 is the hot water storage tank installed above the collector body 1, and 3 is the water supply. 4 is the water supply A type, 5 is the water supply to the solar water heater, and
Pulp for draining water in the hot water storage tank, 6 is a hot water outlet, 7 is a hot water outlet, 8 is a pulp for the hot water outlet, 9 is a wire for operating the opening/closing mechanism in the hot water storage tank from the outside, 10 is the above-mentioned This is a handle provided at the tip of the wire 9.

FIG. 3 is a sectional view taken along the line X--X in FIG. 2, and shows that the evaporation section 11a of the heat pipe 11 is disposed within the heat collector main body 1. Reference numeral 12 denotes a glass body for preventing heat radiation disposed on the upper surface of the bud heater main body 1, and this glass body 12 allows sunlight to pass through. Further, a condensing part 11b of a heat pipe 11 is inserted into the hot water storage tank 2, and an external force member 14 is installed on the outside of the hot water storage tank 2 via a heat insulating material 13. There is. 15 is a backing that seals the joint between the heat pipe 11 and the hot water storage tank 2 watertightly.

The sunlight transmitted through the glass body 12 boils the working fluid vacuum-sealed in the heat exchanger 11 to generate steam. This steam is conveyed to the condensing section 11b of the heat sink 11, and is cooled and condensed in the condensing section 11b, thereby warming the water 16 in the hot water storage tank 2. The working fluid that has been liquefied by condensation flows down inside the heat cube 11 and returns to the evaporation section 11a, where it evaporates again and repeats the above-described operation. The upper part of the hot water tank 2 has a lid 18 with a heat insulating material 17 on the inside, which allows inspection of the inside of the hot water storage tank 2, and also allows the space 19 inside the hot water storage tank 2 to maintain a slight ventilation from the outside air. It's dripping.

FIG. 4 shows an example of the heat collector main body 1, in which a large number of long heat collecting fins 17 having an L-shaped cross section and the evaporation parts 11a of a plurality of heat pipes 11 are brought into close contact with each other. It consists of

FIG. 5 is a sectional view taken along the Y-Y line in FIG. 2, showing a state in which two heat-radiating solar water heaters are installed side by side.

Inside the hot water storage tank 2, there is a lutazzo 20 that communicates with the water supply port 3, and between it and the water supply port 3, a sol tap 2 is installed.
An air breather 21 is provided, either integrally molded with the hot water tank 0 or provided separately, and a hot water outlet pipe 22 is provided inside the hot water storage tank 2 facing the hot water outlet 6. The tapping pipe 22 may be a combination of a valve seat 23 and an opening cap 24 as in this embodiment, or may have any other suitable configuration. In this embodiment, the closing cap 24 is suspended by a wire 9 led to the outside through a small hole 25 provided in the upper part of the hot water storage tank 2 and the outer cover 14.

Reference numeral 26 is a spring that pushes the closing cap 24 downward when no force is applied to the wire 9. On the other hand, the hot water outlet pipe 22 includes a ventilation pipe 2 necessary for discharging the water in the hot water outlet pipe 22 and the hot water outlet/guve 7.
5 faces the space inside the hot water tank 2.

According to this embodiment, the water in the water supply pipe 4 and the water in the hot water pipe f7 are drained manually. If the outside temperature drops below a certain temperature, a thermopulp is installed that stops the water supply and automatically drains the water in the water supply hose.In addition, a solenoid valve is installed in parallel with the hot water tap 8 in the hot water piping pipe. It is a design problem that it is possible to provide a solenoid or the like in the opening/closing mechanism of the hot water storage tank 2 and to automatically operate these by a signal from the thermopulp.

According to the configuration of this embodiment, it is a heat sink type solar water heater, and since water does not pass through the heat collecting surface 1, the heat collecting surface 1 never freezes, and the hot water storage tank 2 is also covered with heat insulating material 3. Because the system is covered with heat during the day, it is always kept at a higher temperature than the outside temperature, so there is no problem like in the past where equipment freezes and stops working. When using the handle manually when there is a risk of freezing in the winter,
is pushed upward, the opening/closing mechanism in the hot water storage tank 2 is closed, the hot water tap lob 8 is opened, and the water in the hot water/mother tube 7 is drained. In addition, the water supply and draining of water in the mother tube 4 is stopped by the pulp 5, and the water supply is stopped by the pulp 5.・I drain the water, but
This water can be completely drained by the air breather 21. It is a matter of course that both the hot water/main pipe 7 and the water supply pipe 4 have a downward slope along their entire length.

As is clear from the above description, the Hitino and Eve type solar water heaters according to the present invention have no fear of freezing even in winter, and can effectively utilize solar heat as long as there is no snow accumulation on the heat collecting surface.

[Brief explanation of the drawing]

Fig. 1 is a system diagram showing an embodiment of the heat/iso type water heater of the present invention, Fig. 2 is a perspective view of the main body of the heat/iso type water heater, and Fig. 3 is an X-X in Fig. 2. Line sectional view, 4th
The figure is a perspective view of the heat collecting part, and FIG. 5 is a sectional view taken along the line Y-Y of the second part. 1... Heat collector body, 2... Hot water storage tank, 4... Water supply A iso, 3... Water inlet, 5... Group, 6...
- Hot water outlet, 22... Hot water outlet pipe, 25... Ventilation pipe, 19
···space. Figure 1

Claims (2)

[Claims] (1) A plurality of evaporation parts of heat 1-zf tubes are arranged in the heat collecting part, and the heat and gas are condensed in a hot water storage tank provided above the heat collecting part and covered with a heat insulating material. In a heat pipe type solar water heater equipped with a heat pipe type solar water heater, an air pleather is connected to a seta water supply pipe facing inside the hot water storage tank, and an air pleather is connected to the water inside the hot water storage tank facing the hot water outlet from the outside. A hot water outlet pipe equipped with an opening/closing mechanism for controlling hot water output is provided, one end of the hot water outlet pipe faces the hot water storage space, and a ventilation pipe for discharging water in the hot water outlet pipe is connected to the hot water outlet pipe, and The heat pump is characterized in that the other end of the water supply pipe is provided with a valve for supplying water to the hot water storage tank and draining water during water supply and motherhood.
Mother Eve solar water heater. (2) The heat gun according to claim (1), wherein the opening/closing mechanism has a biasing means so as to maintain the closed state when no force is applied from the outside. Eve type solar water heater.