JPS60129564A - Solar heat water heater - Google Patents

Abstract

PURPOSE:To form the solar heat water heater without generating dead water area which deteriorates heat collecting efficiency by forming the bottom surface of a hot-water reserving tank with a protruded part at the central part thereof. CONSTITUTION:The bottom surface of the hot-water reserving tank 4, whose configuration is closed to a circular column, is formed with a central protuberance so as to obtain an elevating slope from the outside of the circle toward the center thereof. That means a part corresponding to the dead water area is protruded in the bottom surface of the tank. When water, whose temperature is resin by a heat collector 3, enters into the tank 4 through rise pipes 5, 5, the water, originally reserved in the tank, is pushed by a pressure generated by a temperature difference and flows down into the heat collector 3 through descend pipes 6, 6. In this case, the water, reserved near the bottom of the tank 4, is pushed to flow down through the descend pipes 6, 6 along the slope of the bottom surface of the tank without being stagnated, because the water is in the path of hot-water circulation. Thus, the water is heated gradually under a natural circulation between the tank 4 and the heat collector 3. Accordingly, the dead water area, which does not contribute to the circulation, will never be generated and the heat collecting efficiency may be improved remarkably.

Description

【発明の詳細な説明】 〔技術分野〕 この発明は、自然循環型の太陽熱温水器に関する。[Detailed description of the invention] 〔Technical field〕 The present invention relates to a natural circulation type solar water heater.

〔背景技術〕[Background technology]

従来、太陽熱温水器の貯湯槽内における水の循環状態は
、第１図に破れ斜線であられされているように、貯湯槽
１内底部あたりでは、水が滞留してほとんど動かない山
形の死水域２を生じるものであった。この死水域２は、
温水の自然循環に寄与せず、一部の熱伝動による温度上
昇があるだけであった。そのためＪ太陽熱温水器の採熱
効率を悪くするばかりで非常に無駄な部分であった。Conventionally, the state of water circulation in the hot water storage tank of a solar water heater has been a mountain-shaped dead area where water stagnates around the bottom of the hot water storage tank 1 and hardly moves, as shown by broken diagonal lines in Figure 1. 2. This dead area 2 is
It did not contribute to the natural circulation of hot water, and there was only a temperature rise due to some heat transfer. Therefore, it was a very wasteful part that only worsened the heat extraction efficiency of the J solar water heater.

〔発明の目的〕[Purpose of the invention]

そこで、この発明はシ線熱効率を悪くする死水域を発生
させない太陽熱温水器を提供することを１的とする。　
′　□ □　〔発明の開示〕　′　□ 発明者は、以上の目的を達成するために鋭意検訂を重ね
、□この発明を構成した。Therefore, one object of the present invention is to provide a solar water heater that does not generate a dead area that deteriorates heat efficiency.
′ □ □ [Disclosure of the Invention] ′ □ In order to achieve the above objectives, the inventor made extensive research and □ constructed this invention.

□この発明は、貯湯槽内中央部に集熱器から来る昇温水
が中を流れる上昇管が貫入していて、貯湯槽内の□側部
からは集゛熱ニーへ向かう低温水が流出する下降管が延
びている自然循環型太陽熱温水器であって、貯湯槽底面
が中央部***状に形成されていることを特徴とｔｉ太−
熱温水器をその要旨とする。以下、これを、ぞの実施例
をあられす図面に基づいて詳しく説明する。□In this invention, a rising pipe penetrates the center of the hot water storage tank through which the heated water coming from the heat collector flows, and low temperature water flowing toward the heat collecting knee flows out from the □side of the hot water storage tank. It is a natural circulation type solar water heater with an extending downpipe, and is characterized by the bottom of the hot water tank having a raised central part.
The gist is a hot water heater. Hereinafter, each embodiment will be explained in detail based on the accompanying drawings.

第２図にみるような貯湯槽４と集熱器３から構成゛され
る太陽熱温水器が、第３図ないし第５図にみるように、
円柱形状に近い貯湯槽４の底面の形状を両側から中央に
向かって上昇勾配を描くよう中央部***状に形成してい
る。すなわち、従来の死水域に相当する分だけ貯湯槽底
面が盛り上げられている。第４図および第５図中、５は
上昇管である。A solar water heater consisting of a hot water tank 4 and a heat collector 3 as shown in Fig. 2, as shown in Figs. 3 to 5,
The bottom surface of the hot water storage tank 4, which has a nearly cylindrical shape, is formed into a raised shape at the center so as to draw an upward slope from both sides toward the center. In other words, the bottom surface of the hot water storage tank is raised by an amount corresponding to the conventional dead area. In FIGS. 4 and 5, 5 is an ascending pipe.

貯湯槽４内の水の流れは、第３図にみるように、集熱器
３によって温度上昇した水が貯湯槽４内に貫入している
上昇管５．５から貯湯槽内に入ってくると（矢印で図示
）、入って来た温水によって元から貯湯槽内にあった水
が、鎖線矢印でみるように、温度差から生じた圧力のた
めに押し流され下降管６．６から集熱器３へと流出して
ゆく。As shown in Fig. 3, the flow of water in the hot water storage tank 4 is such that water whose temperature has been raised by the heat collector 3 enters the hot water storage tank from a rising pipe 5.5 that penetrates into the hot water storage tank 4. (as shown by the arrow), the water that was originally in the hot water storage tank due to the incoming hot water is swept away by the pressure generated from the temperature difference, as shown by the chain arrow, and heat is collected from the downcomer pipe 6.6. It flows out into vessel 3.

この時、貯湯槽内底部付近の水も鎖線矢印でみるように
、温水循環の径路にあるため、滞留することなく、貯湯
槽底面の勾配に沿って下降管６，６へと押し流されるよ
うになっている。このようにして、水は貯湯槽４内と集
熱器３内との間を自然循環しながら次第に加熱されてゆ
くのである。At this time, as shown by the chain arrow, the water near the bottom of the hot water storage tank is also in the hot water circulation path, so it does not stagnate and is swept away along the slope of the bottom of the hot water tank to the descending pipes 6, 6. It has become. In this way, the water is gradually heated while circulating naturally between the hot water storage tank 4 and the heat collector 3.

貯湯槽は、ポリエチレン等の合成樹脂が材料として使用
されれば、ブロー成型等一体成型によって容易に製造さ
れ得る。なお、貯湯槽底面は、実施例では両側から中央
に向かって勾配が形成されていたが、下降管が両測部以
外の底面側部に設けられている場合には、下降管のある
個所から中央に向かって勾配が形成されるのである。If a synthetic resin such as polyethylene is used as the material, the hot water tank can be easily manufactured by integral molding such as blow molding. In addition, in the example, the bottom of the hot water storage tank was sloped from both sides toward the center, but if the downcomer pipe is provided on the side of the bottom other than both measuring sections, the bottom surface of the hot water storage tank is sloped from the point where the downcomer pipe is located. A gradient is formed towards the center.

貯湯槽底面の勾配面は、実施例では平面であったが、必
ずしも平面でなくとも構わない。また、左右両面の勾配
度も均一である必要はない。Although the sloped surface of the bottom of the hot water storage tank was a flat surface in the embodiment, it does not necessarily have to be a flat surface. Further, the degree of gradient on both the left and right sides does not need to be uniform.

〔発明の効果〕〔Effect of the invention〕

以上のように、この発明にかかる太陽熱温水器は、貯湯
槽内中央部に集熱器から来る昇温水が中を流れる上昇管
が貫入していて、貯湯槽内の側部からは集熱器へ向かう
低温水が流出する下降管が延びている自然循環型太陽熱
温水器であって、貯湯槽底面が中央部***状に形成され
ていることを特徴としているので、循環に寄与しない死
水域が発生しないため、採熱効率が著しく向上し、無駄
がなくなるという効果がもたらされる。しかも、貯湯槽
の形状が簡単であるため、ブロー成型等一体成型によっ
て安価かつ容易に製造できるという効果ももたらされる
のである。As described above, in the solar water heater according to the present invention, a rising pipe through which heated water coming from a heat collector flows penetrates into the center of the hot water storage tank, and a rising pipe through which heated water coming from the heat collector flows penetrates into the center of the water storage tank. This is a natural circulation type solar water heater with an extending downpipe through which low-temperature water flows out, and is characterized by the bottom of the hot water storage tank having a raised central part, so there is no dead area that does not contribute to circulation. Since no heat is generated, heat extraction efficiency is significantly improved and waste is eliminated. Moreover, since the hot water storage tank has a simple shape, it can be manufactured easily and inexpensively by integral molding such as blow molding.

〔参　考〕[Reference]

貯湯槽内の死水域をなくして採熱効率を向上させること
のできる太陽熱温水器に！よ、以下のようなものもあ、
る。す、なわち、第６図にみるように、小孔８を周面に
複数個有する導水管７が、貯湯槽４内両側の下降管６．
６にそれぞれ連接されて貯湯槽底面に沿って延びている
ものである。これによって、死水域であった貯湯槽内底
部がらは、低温水が導水管７．７を伝って下、降管６，
６へ流れてゆくようになり、死、水域が生じなくなる。A solar water heater that eliminates dead areas in the hot water tank and improves heat collection efficiency! Well, there are also things like the following,
Ru. That is, as shown in FIG. 6, a water conduit 7 having a plurality of small holes 8 on its circumference is connected to a downcomer pipe 6. on both sides of the hot water storage tank 4.
6 and extend along the bottom surface of the hot water storage tank. As a result, the low-temperature water flows down the water conduit 7, 7, down the downcomer pipe 6,
6, and death and water bodies no longer occur.

したがって、太陽熱温水器の採ハ効率も向、上するので
ある。図中、５は上昇管である。Therefore, the extraction efficiency of solar water heaters is also improved. In the figure, 5 is an ascending pipe.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は従来の太、！熱温水器をあられす部分的、断面
図、第２図、、および第３図はそれぞれこの発明にかか
る太陽熱温水器の一実施例をあらゎす斜視、図および部
分的断、面図、第４図および第５図はそれぞれ第３図の
太陽熱温水器を構成する貯湯槽のＡ−Ａ断面図およびＢ
−Ｂ断面図、第６図は太陽熱温水器の別の例をあられす
面分的断面図である３・・・集熱器　４・・・貯湯槽　
５・・・上昇管　６・・・下降管 代理人　弁理士　松　本　武　彦 第１図 第２図 第３図 第４図　第５図 第６図Figure 1 shows the conventional thick,! A partial cross-sectional view, FIG. 2, and FIG. Figures 4 and 5 are sectional views A-A and B, respectively, of the hot water storage tank that constitutes the solar water heater in Figure 3.
-B sectional view, Figure 6 is a sectional view showing another example of a solar water heater. 3... Heat collector 4... Hot water storage tank
5... Ascent pipe 6... Downstream pipe agent Takehiko Matsumoto, patent attorney Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

【特許請求の範囲】[Claims] （１１貯湯槽内中央部に集熱器から来る昇温水が中を流
れる上昇管が貫入していて、貯湯槽内の側部からは集熱
器へ向かう低温水が流出する下降管が延びている自然循
環型太陽熱温水器であって、貯湯槽底面が中央部***状
に形成されていることを特徴とする太陽熱温水器。(11) There is a rising pipe in the center of the hot water storage tank through which the heated water coming from the heat collector flows, and a descending pipe extends from the side of the tank through which the low temperature water flowing towards the heat collector flows out. This solar water heater is a natural circulation type solar water heater, characterized in that the bottom surface of the hot water storage tank is formed in the shape of a bulge in the center.