JP6908347B1 - Siphon type water dispenser and how to adjust the amount of water supply - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for automatically supplying water to a flowerpot or the like within several days when the person is away from home. In this case, it is necessary that water is supplied stably without interruption for a certain number of days. In addition, since the required amount of water supply differs depending on the season of water supply and the size of the flowerpot, it is desirable to be able to adjust the amount of water supply. SOLUTION: The water supply device according to the present invention is a water supply device in which a siphon is formed by a thin tube and water in a water supply container is discharged and supplied according to the principle of the siphon, and water can be stably supplied for a long period of time. This water dispenser has features such as being able to adjust the amount of water supply, being able to use a wide range of containers as a water supply container, and being easy to manufacture due to its simple structure. [Selection diagram] Fig. 1

Description

The present invention relates to a water dispenser that automatically and continuously supplies water to flowers and the like potted in a pot of a plant, a planter, and the like, and a method of adjusting the amount of water supplied in water supply using the water dispenser.

You may need to water your flowerpots, planters, etc. while you are away from home for several days. At such times, a device that automatically supplies water to a flowerpot, a planter, or the like is desired, and various devices for this purpose have been devised.

As a device for supplying water to a flowerpot or the like, a device has been devised in which water is flowed from an inverted container through a small hole by the action of gravity. In such a device, the container for storing water is small, and the amount of water that can be supplied is limited. In addition, a method has been devised that uses the capillary phenomenon to suck up water from a container filled with water and drop it into a flowerpot, etc., but it sucks up water depending on the condition of the material for water conveyance and the installation environment. The amount of water supply is not stable because the amount is different. Moreover, it is difficult to adjust the amount of water supply.

In addition, when water is supplied to flower pots, etc., the amount of water required differs depending on the season of water supply and the size of the plant pot, so the water dispenser has a function to adjust the amount of water supply. It is desirable to have it.

As a water dispenser for water supply to flower pots, etc., a device whose structure and mechanism are complicated and which requires a large amount of cost to manufacture is not suitable for the purpose.

Actual registration 3128077 Actual application 2006-005665 PET bottle automatic water dispenser Japanese Patent Application Laid-Open No. 2000-287564 Japanese Patent Application No. 11-137587 Water supply device using PET bottles Japanese Patent Application Laid-Open No. 10-337122 Japanese Patent Application No. 09-185696 Water supply equipment for flowerpots Jitsukaihei 06-034445 Jitsugyohei 04-079296 Automatic water dispenser for plants

The present invention is to provide a water dispenser capable of stably supplying an appropriate amount of water for supplying water to a flowerpot, a planter, or the like, and has a simple structure and is easy to manufacture.

In the water supply device according to the present invention, the lower end of the water supply container equipped with a filter for preventing dust from entering is inside the water supply container.
A water supply tube holding pipe that is immersed in the water and placed in the water supply container so that the upper end is above the water surface in the water supply container.
One end is immersed in the water inside the water supply tube holding pipe, and the other end (hereinafter referred to as the water outlet end) is arranged outside the water supply container at a position lower than the water surface of the water supply container to provide a water pipe that acts as a siphon. A water dispenser featuring.

In the water dispenser according to the present invention, the vertical distance between the position of the water outlet and the position of the water surface in the water supply container (hereinafter referred to as
A method of adjusting the flow rate of water flowing out of the water supply container through the water pipe by combining the water supply surface altitude) and the inner diameter of the water pipe.

According to the siphon principle, the amount of water flowing out of the water pipe through the water pipe is related to the altitude of the water supply surface and the inner diameter of the water pipe. Utilizing this fact, the water dispenser according to the present invention is a water dispenser that adjusts the amount of water supplied by combining the altitude of the water supply surface and the inner diameter of the water pipe, and has a simple structure and is easy to manufacture. In addition, by preventing dust from entering the water pipe with a filter attached to the water pipe holding pipe, the required amount of water can be stably supplied for a long period of time. Furthermore, there are only two conditions for the container to be used as a water supply container: the capacity of water required for water supply can be secured and the water supply tube holding pipe can be placed inside the water supply container. It has the feature that a wide range of containers such as pet bottles can be used.

FIG. 1 is an overall view of an embodiment of the present invention. FIG. 2 is a diagram illustrating a method of connecting a plurality of water supply containers with siphon pipes to form a water supply container having a large water supply capacity and a large water supply surface area.

Hereinafter, examples of the present invention will be described with reference to FIG.

FIG. 1 is an example of a water dispenser according to the present invention.
The water supply tube holding pipe 5 holds the water supply tube 9 on the bottom surface of the water supply container 4, and in this embodiment, a pet pipe having an inner diameter of 0.7 cm and a length of 33 cm is used. In addition, a filter 2 for preventing the ingress of dust is attached to the bottom surface side of the water supply container. In this embodiment, a nylon mesh sheet is used.

The protection pipe 6 is for protecting the water pipe 11 inside, and a flexible tube having an inner diameter necessary and sufficient for arranging the water pipe 11 inside is used.
In this embodiment, the protective tube 6 is divided into two, and the entire tube connected by the connecting tube 8 having an air hole 7 on the side surface is used as the protective tube. The air holes 7 formed on the side surfaces of the connecting pipe 8 are for preventing the protective pipe from forming a siphon. In this embodiment, two vinyl chloride tubes having a length of 50 cm and an outer diameter of 0.4 cm are used as the protective tubes 11, and air holes 7 are formed on the side surfaces of the connecting tubes 8 to have a length of 1.5 cm and an inner diameter of 0.4 cm. Use a polyvinyl chloride tube.

The water pipe 11 constitutes a siphon and is for allowing the water 3 in the water supply container 4 to flow out to the outside. The amount of water discharged per unit time (referred to as water supply speed) depends on the inner diameter of the water pipe 11.
In this example, an experiment was conducted using two types of silicon tubes having a length of 102 cm, an inner diameter of 0.05 cm and an inner diameter of 0.07 cm, as water pipes.

A rod 12 whose position can be moved in the vertical direction is attached to the base 1 of the water supply container, and a hole is made in this rod to fix the water discharge end 14. By this, the altitude of the water supply surface at the start of water supply is set, and as a result, the initial value of the water supply speed is determined. (This mechanism is called the water supply amount regulator 12)
In addition, the method of adjusting the amount of water supply is based on the condition that the upper and lower positions of the water outlet need to be fixed at the specified positions. It doesn't matter. For example, the water supply tube may be formed into a ring shape and the vertical positions of the water outlet may be adjusted to set the initial value of the water supply surface altitude.

Start water supply as follows.
1 Install a water supply container.
2 Place the water supply tube inside the water supply tube holding pipe and immerse it in the water in the water supply container as shown in FIG.
3 Inject water into the water pipe from the water outlet with a dropper to remove air, and hold the water outlet below the water supply surface.
4 After confirming that water comes out from the water outlet, attach the water outlet to the water supply amount regulator.
5 Attach an extension pipe to the water outlet and supply water to the required places.

In the water dispenser according to the present invention, the water supply surface drops and the water supply speed gradually decreases as the water supply is continued. The larger the water supply area, the smaller the rate of descent of the water supply surface. Therefore, the water supply container having a larger water supply area has a smaller rate of decrease in the water supply rate due to continuous water supply. In the water supply device according to the present invention, a plurality of water containers can be connected by a siphon pipe to expand the capacity and water supply area of the water supply containers. Figure 2 shows an example of connecting multiple PET bottles.

Let S be the water supply area in the water supply, t be the elapsed time from the start of water supply, and h be the water supply surface altitude at that time.

となる Assuming that the water supply speed f is proportional to the altitude of the water supply surface, and let the proportionality constant (hereinafter referred to as the water supply coefficient) be a.

Becomes

Since the amount ΔV of the water flowing out during the minute time Δt is the product of the amount of decrease Δh of the water supply surface during this period and the area S of the water supply surface.

Since the water supply speed f is on the left side of the above equation, from (1) and (2)

となる。ここで、Ｈは給水開始時の給水面高度である。この式は、ｔ時間後の給水面高度は、導水管で決まる給水係数ａと給水容器で決まる給水面積Ｓで決まることを意味しており、良い精度で成り立つことが本実施例による実験で確認されている。 The solution of this differential equation is

Will be. Here, H is the altitude of the water supply surface at the start of water supply. This equation means that the water supply surface altitude after t hours is determined by the water supply coefficient a determined by the water pipe and the water supply area S determined by the water supply container, and it is confirmed by the experiment according to this example that it holds with good accuracy. Has been done.

Therefore, if the value of the water supply coefficient a of the water pipe is known, the amount of water supply when the water supply surface altitude at the start of water supply is set to H in the water supply container having the water supply area S can be calculated.

のとき、（４）式は次のように近似できる。

右辺の第二項の

は、ｔ時間の給水面の降下量なので、この間の給水総量ｖは

となり、

を計算すれば、給水係数ａを求めることができる。 The water supply coefficient of the water pipe is a numerical value indicating "easiness of water flow", and the larger the inner diameter, the larger the water supply coefficient, and the value can be obtained as follows. Let t be the time shortly after the start of water supply, and let v be the total amount of water supplied up to the time t. t is small

Then, Eq. (4) can be approximated as follows.

The second term on the right side

Is the amount of descent of the water supply surface for t hours, so the total amount of water supply v during this period is

Next,

Can be calculated to obtain the water supply coefficient a.

表中の、「２給水総量」は給水開始時から経過時間までに給水容器の外部に流出した水の総量の実測値、「４給水面高度」は、「Ｈ−給水総量÷給水面積」で計算した値、「５給水面高度の計算値」は（４）式を使った計算値である。また、給水係数は、最初の１０４６分、ｔ＝１７．４３時間での給水総量の測定値ｖ＝２２７ミリリットルから、式（５）で計算した値ａ＝０．５３２を使用した。 In this example, two experiments were performed by changing the conditions of the water supply container and the water pipe.
The results of the 10-day water supply experiment in Experiment 1 are as follows.
Water pipe Length 102 cm Inner diameter 0.05 cm Water supply coefficient a = 0.532 (square centimeter / hour)
Water supply container Poly tank Water supply area S = 800 square centimeters Initial value of water supply surface altitude H = 24.5 cm

In the table, "2 total water supply amount" is the measured value of the total amount of water that has flowed out of the water supply container from the start of water supply to the elapsed time, and "4 water supply surface altitude" is "H-total water supply amount ÷ water supply area". The calculated value, "5 Calculated value of water supply surface altitude", is a calculated value using the formula (4). As the water supply coefficient, the value a = 0.532 calculated by the formula (5) was used from the measured value v = 227 ml of the total amount of water supply at the first 1046 minutes and t = 17.43 hours.

実験２では図２で示すような方法で、４本のペットボトルをサイフォン管で連結した容器を使用した。給水面積は４本のペットボトルの給水面積を合計したものである。この実験では、実験１より内径が大きく、したがって給水係数が大きい導水管と、給水面積が実験１より小さな給水容器を使ったので、給水面高度の降下率が大きくなっている。給水面高度が初期値の半分より低い１０日目には、給水面高度の測定値と式（４）による計算値とのズレが増加しているがその差は１０パーセント程度である。また、給水面高度の降下率が大きいために１日あたりの給水量が急速に減少している。このことの改善方法は、複数の給水容器を並べて、サイフォン管で連結したものを給水容器として使えばよい。このようにすれば給水面積が大きくなるので給水面の降下率は小さくなり、１日あたりの給水量の減少を低くすることができる。 The results of the 10-day water supply experiment in Experiment 2 are as follows.
Water pipe Length 102 cm Inner diameter 0.07 cm Water supply coefficient a = 1.29 (square centimeter / hour)
Water supply container 4 PET bottles Water supply area 327.8 square centimeters Initial value of water supply surface altitude H = 16.5 cm

In Experiment 2, a container in which four PET bottles were connected by a siphon tube was used by the method shown in FIG. The water supply area is the sum of the water supply areas of four PET bottles. In this experiment, a water pipe having a larger inner diameter than Experiment 1 and therefore a large water supply coefficient, and a water supply container having a smaller water supply area than Experiment 1 were used, so that the drop rate of the water supply surface altitude is large. On the 10th day when the water supply surface altitude is lower than half of the initial value, the difference between the measured value of the water supply surface altitude and the calculated value by the equation (4) increases, but the difference is about 10%. In addition, the amount of water supplied per day is rapidly decreasing due to the large drop rate of the altitude of the water supply surface. As a method for improving this, a plurality of water supply containers arranged side by side and connected by a siphon pipe may be used as the water supply container. In this way, since the water supply area becomes large, the rate of descent of the water supply surface becomes small, and the decrease in the amount of water supply per day can be reduced.

With this water dispenser, water supply can be continued until the water is exhausted or the water supply surface altitude becomes zero, except when foreign matter flows into the water pipe and becomes clogged. In this example, it was confirmed that water supply can be continued for one month or more by preventing foreign matter from entering the water pipe by using an appropriate material as the filter.

1 Water supply container stand 2 Filter 3 Water 4 Water supply container 5 Water supply tube holding pipe 6 Protective pipe 7 Air hole 8 Connecting pipe 9 Water supply tube 10 Water supply surface 11 Water guide pipe 12 Water supply amount regulator 13 Extension pipe 14 Water outlet 15 Planting pot 16 Pet Bottle 17 siphon tube

Claims (2)

A water supply tube holding pipe that is placed in the water supply container so that the lower end with the filter attached is immersed in the water in the water supply container and the upper end is above the water surface in the water supply container.
A water dispenser characterized in that one end is immersed in water inside a water supply tube holding pipe, and the water outlet is arranged outside the water supply container at a position lower than the water surface of the water supply container to provide a water conduit that acts as a siphon. The method according to claim 1, wherein the flow rate of water flowing out of the water supply container through the water pipe is adjusted by combining the altitude of the water supply surface and the inner diameter of the water pipe.

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