JP3429556B2 - Pot bottom irrigation tank - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention According to the present invention, when water is supplied to a tray on which potted plants (pots) are placed to irrigate the pots from the bottom, the water level in the tray becomes constant. The bottom of the bowl irrigation tank, in which drainage is automatically started at the point of time.

[0002]

2. Description of the Related Art A bowl bottom watering tank of this type is known as shown in FIG. This is an inner cylinder 31 that extends upward through the bottom wall 21 of the recess 2 provided in the tray 1.
Cup-shaped siphon tube 3 consisting of an outer cylinder (cup) 32
Is provided.

In the bowl bottom irrigation tank of FIG. 6, the water level of the nutrient water supplied to the tray 1 (water or water containing a specific nutrient: hereinafter simply referred to as water) rises and the water is supplied to the inner cylinder 3
When water drains from the upper end 31a of No. 1 into the pipe passage of the inner cylinder 31 and the water is filled in the outer pipe 32 by water supply thereafter, the pipe passage of the inner cylinder 31 is filled with water even if the water supply is stopped. Due to the suction force generated, water is sucked up into the outer cylinder 32 as indicated by the arrow a, and the drainage is continued. When the water surface of the recess 2 into which the water in the tray 1 flows is lowered below the suction port 32a at the lower end of the outer cylinder 32 and air is sucked into the outer cylinder 32, the water is sucked into the outer cylinder 32. It is no longer sucked up, the water surface inside the outer cylinder 32 lowers accordingly, and the drainage ends. The water surface L in the outer cylinder 32 at this time is the position of the upper end of the inner cylinder 31. After the drainage is completed, the water remaining in the outer cylinder 32 flows out into the recess 2 and collects, and the water becomes the residual water W in the recess 2. In FIG. 6, V indicates a pot such as a flower pot. A pot bottom irrigation tank using a siphon tube having a structure similar to that of the siphon tube 3 described in FIG. 6 is described in, for example, Japanese Patent Application Laid-Open No. 5-284865.

FIG. 7 shows a bowl bottom watering tank using another siphon tube 3. In this bowl bottom irrigation tank, the siphon tube 3 is formed by a U-shaped or J-shaped curved tube arranged in the recess 2 of the tray 1 in the opposite direction, and such a siphon tube 3 was used. A bowl bottom watering tank is described, for example, in Japanese Utility Model Publication No. 5-15750. According to this bowl bottom irrigation tank, drainage is started when the water level of the water supplied to the tray 1 rises and the water overflows the highest point 34 of the passage inside the siphon tube 3 which is a curved tube. When water fills the pipe passage of the siphon pipe 3,
Even if the water supply is stopped, water is sucked up from the suction port 3a as indicated by an arrow b by the suction force generated in the pipe passage and the recess 2 is formed.
Drainage continues. Then, when the air is sucked into the siphon pipe 3 below the suction port 3a of the siphon pipe 3 of the recess 2, water is not sucked up by the siphon pipe 3 and the water surface of the pipe passage reaches the highest point 34 described above. It goes down and drainage ends. The water level L of the pipe passage at this time is the position of the highest point 34. After the drainage is completed, the water remaining between the highest point 34 in the pipe passage of the siphon pipe 3 and the suction port 3a flows out into the recess 2 and collects.
It becomes the residual water W in.

[0005]

By the way, in a large-sized basin bottom irrigation tank, the water irrigating the bottom of the pot is drained from the tray after a certain short time and the bottom of the tray quickly becomes dry. Is said to be desirable.

On the other hand, in the conventional bowl bottom irrigation tank described with reference to FIGS. 6 and 7, the water that irrigates the bottom of the bowl is drained from the tray 1 after a certain short time due to the action of the siphon tube 3. However, when the air is sucked into the pipe passage of the siphon pipe 3 and the drainage is completed, the water remaining on the bottom surface of the tray 1 without evaporating gradually flows into the recess 2 and the recess 2 Accumulate in. Further, after the drainage by the siphon pipe 3 is completed, the water remaining in the siphon pipe 3 flows out and accumulates in the recess 2 as described above. When the siphon tube 3 is formed of a U-shaped or J-shaped curved tube in the opposite direction as described in FIG. 7, the inner cylinder 31 and the outer cylinder 3 as shown in FIG.
After the drainage is finished, the recess 2 is more than the siphon pipe 3 consisting of 2.
The amount of water that collects in is reduced. However, as long as the water remains in the recess 2 after the drainage is completed, the water accumulated in the recess 2 does not easily disappear due to natural drying.

When water remains in the recess 2, algae are likely to be generated in the recess 2 or the recess 2 is easily soiled. Especially, when the bottom watering tank of the pot is managed in the house, sunlight and temperature are often optimal for the generation of algae, so algae will be generated early and the bottom watering will be performed after that. When it is performed, the algae generated may hinder smooth drainage due to the action of the siphon tube 3.

The present invention has been made under the above circumstances. After the drainage is completed by the action of the siphon pipe, the water flowing into the tray from the tray or the pipe passage of the siphon pipe is naturally and quickly drained. By taking such ingenuity,
An object of the present invention is to provide a pot bottom irrigation tank capable of preventing algae from being generated in the recess and the recess being easily soiled.

[0009]

According to a first aspect of the present invention, there is provided a bowl bottom irrigation tank in which a tray on which the bowl is placed is provided with a recess, and the nutrient water supplied to the tray is discharged into the recess. In a bowl bottom irrigation tank provided with a siphon tube for doing so, a small hole is formed in the tube wall of the siphon tube for guiding the water in the recess to the in-tube passage of the siphon tube. The pot bottom irrigation tank according to claim 2 is defined by claim 1.
In the above description, the size of the small holes is determined so that the amount of water that can pass through the small holes is smaller than the amount of drainage of the pipe passage of the siphon pipe. In the bowl bottom irrigation tank according to claim 3, the tray on which the bowl is placed is provided with a recess, and the recess is provided with a siphon pipe for discharging the nutrient water supplied to the tray. In the bowl bottom watering tank, a small hole is formed in the siphon pipe, which is a long hole that guides the water in the recess to the inside passage of the siphon pipe.The small hole can be opened and closed, and the opening area can be increased or decreased when it is open. It has a possible cover body.

[0010]

According to the structure described in claim 1, the water that has flowed into the recess from the tray or the siphon pipe after the drainage due to the action of the siphon pipe has finished is siphoned from the small holes formed in the pipe wall of the siphon pipe. It is guided to the passage in the pipe and discharged.

According to the structure described in claim 2, the drainage action by the siphon pipe is not hindered by the small hole formed in the pipe wall of the siphon pipe.

According to the structure described in claim 3, it becomes possible to increase or decrease the opening area of the small hole formed in the pipe wall of the siphon pipe. It is also possible to close the small hole if necessary.

Claims 1, 2, and 3
7 has the same function as that of the siphon pipe 3 described with reference to FIG. 7, that is, drainage is automatically started when the surface of the water supplied to the tray 1 reaches a certain height, and , After the water supply is stopped, the recess 2
The effect that the drainage is automatically terminated when the water surface inside the water drops below the suction port 3a is exhibited.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a plan view in which the pot bottom irrigation tank according to the invention described in claim 1 or 2 is partially omitted.
2 is an enlarged cross-sectional view taken along the line II-II of FIG. 1, FIG. 3 is an enlarged cross-sectional view taken along the line III-III of FIG. 1, and FIG. 4 is an enlarged view of the siphon tube 3 employed in the above-mentioned pot bottom irrigation tank. FIG.

The bowl bottom watering tank has a substantially rectangular tray 1 on which the bowl V is placed. The tray 1 is made of a synthetic resin vacuum-molded body and has a side wall 11 having a predetermined height at its outer edge, and a plurality of parallel lateral grooves 12 ... And these lateral grooves 12 ... The vertical grooves 13 and the like are formed in a lattice shape, and these serve as water channels. In addition, a recess 2 that is vertically long in a plan view is formed at a position near one side of the tray 1. As can be seen in FIG. 2, this recess 2 is inclined so that its bottom wall 21 becomes lower as it approaches the center.

A siphon tube 3 is provided at the center of the recess 2. The siphon tube 3 is formed by an inverted U-shaped or J-shaped curved pipe that is provided in the recess 2 and penetrates the bottom wall 21 of the recess 2, and the recess is formed in the pipe wall. A small hole 4 is formed to guide the water 2 to the pipe passage of the siphon pipe 3. More specifically with reference to FIG. 4, the siphon tube 3 includes a rising portion 35 penetrating the bottom wall 21, a semi-arcuate bending portion 36 extending from the rising portion 35, and the bending portion 3
6 and a falling portion 37 that hangs down from each other, and an inclined suction port 37a is formed at the lower end of the falling portion 37. Such a siphon tube 3 can be easily and inexpensively manufactured by bending a synthetic resin pipe into a U-shape or a J-shape, for example. Also, siphon tube 3
The rising portion 35 is watertightly attached to the bottom wall 21 via the fixture 5, and in the attached state, the suction port 37a faces the bottom wall 21. And the small hole 4
Are opened at the same level as the bottom of the recess 21, that is, the inner surface of the bottom wall 21.

Here, it is desirable to make the diameter of the small hole 4 shorter than the diameter of the passage in the siphon tube 3, so that the amount of water that can pass through the small hole 4 is in the tube of the siphon tube 3. It is less than the amount of drainage in the passage. Specifically, when the diameter of the passage inside the siphon pipe 3 is 13 mm,
The diameter of the small holes 4 may be set to about 2 to 3 mm, and if this is done, the amount of water that can pass through the small holes 4 becomes significantly smaller than the amount of drainage of the pipe passage of the siphon pipe 3, and the drainage action of the siphon pipe 3 It is not obstructed by the water flowing from the small hole 4 into the pipe passage.

In the bowl bottom watering tank having the above structure, the amount of water supplied to the tray 1 is much larger than the amount of water flowing out from the small holes 4. Therefore, the water level in the tray 1 rises due to the water supply to the tray 1. Drainage is started when the water level of the water supplied to the tray 1 rises and the water overflows the highest point 34 of the pipe passage of the siphon pipe 3, which is a curved pipe. When the water is filled in, the water is sucked up from the suction port 35 as indicated by the arrow b by the suction force generated in the pipe passage even if the water supply is stopped, and the drainage from the recess 2 is continued. When the water surface of the recess 2 falls below the suction port 37a of the siphon pipe 3 and air is sucked into the siphon pipe 3, the water is not sucked up into the siphon pipe 3 and the water surface of the pipe passage is the above-mentioned highest point. Draining is completed by going down to 34. The drainage action of the siphon pipe 3 described above is the same as the drainage action of the siphon pipe 3 described in FIG. 7. It should be noted that when drainage is being performed by the siphon pipe 3, a small amount of water also flows into the pipe passage from the small hole 4.

After the drainage by the siphon pipe 3 is completed, the water flowing out from the siphon pipe 3 into the recess 2 flows into the pipe passage of the rising portion 35 of the siphon pipe 3 from the small hole 4 and is discharged. Similarly, the water that gradually flows from the tray 1 into the recess 2 also flows from the small holes 4 into the pipe passage of the rising portion 35 of the siphon pipe 3 and is discharged. Therefore, the situation in which water remains in the recess 2 does not occur, the drainage of the recess is quickly performed, and the generation of algae is prevented.
It also prevents the situation where it becomes dirty easily.

As shown by the phantom line in FIG. 4, a cylinder 38 is attached to the lower end of the falling portion 37 of the siphon pipe 3 so as to be slidable up and down as indicated by an arrow c, and the cylinder 38 is sucked. If the mouth 37a 'is provided, the height of the suction port 37a' can be adjusted by sliding the cylinder 38 to change the position of the water surface of the recess 2 at the end of drainage by the siphon tube 3. Is.

FIG. 5 is a sectional view showing an essential part of the siphon tube 3 of the bowl bottom watering tank according to the embodiment of the invention described in claim 3. In this siphon tube 3, a small hole 4
Is formed by a long hole that is long in the axial direction of the siphon tube 3, and the long hole extends below and above the bottom wall 21 of the recess 2. In addition, a tubular cover body 6 is vertically slidably fitted to the rising portion 35 of the siphon tube 3 in which the small hole 4 is formed. Cover body 6 and rising portion 3
An O-ring 61 is provided between the No. 5 and the No. 5 in a watertight manner.
Reference numeral 7 denotes a rubber packing that maintains watertightness between the rising portion 35 and the bottom wall 21. Other configurations are the same as those described in FIGS.

In the bowl bottom watering tank described in FIG.
When the cover body 6 is slid downward, the opening area of the small holes 4 is reduced, so that the amount of water flowing from the small holes 4 into the pipe passage is reduced. Further, when the cover body 6 is slid upward, the opening area of the small hole 4 increases, so that the amount of water flowing from the small hole 4 into the pipe passage increases. Therefore, by adjusting the position of the cover body 6 and appropriately determining the size of the opening area of the small hole 4, the draining action of the recess 2 through the small hole 4 can be achieved within the range where the drainage action of the siphon tube 3 is not impaired. It is possible to increase efficiency. Further, it is possible to close the small hole 4 by sliding the cup pair 6 downward until it hits the rubber packing 7. The use of closing the small holes 4 is advantageous in that when liquid fertilizer is used for the water supply, the liquid fertilizer cannot be wastefully discarded.

In the bowl bottom watering tank of the present invention, the shape of the curved tube forming the siphon tube 3 is not limited to the example shown in the figure, and may be, for example, an inverted V shape or an arc shape. Good. Further, the siphon tube 3 may be a cup-type siphon tube as described in FIG.

[0024]

According to the present invention, after the drainage by the siphon pipe is completed, the water remaining in the recess is discharged from the small hole of the siphon pipe through the pipe passage, so that the recess is formed like the bottom of the tray. The inner surface of the product also becomes dry immediately after the drainage is finished, and the situation where algae is generated in the recess and the recess is soiled is prevented. Therefore, even if sunlight and temperature are controlled under conditions suitable for the generation of algae, such as in a house, a situation occurs in which the smooth drainage function is impaired during the bottom surface irrigation that occurs after the generation of algae. The effect is that it is possible to avoid this. Also, since the small holes have the effect of discharging residual water regardless of whether the depth of the recess is deep or shallow, when making the tray by vacuum forming, the recess should be shallow and small and the wall thickness of the recess should be small. It is possible to avoid thinning, and it becomes possible to increase the space for placing the tray on the pot. Such an effect is exhibited by the inventions described in any one of claims 1, 2 and 3.

According to the second aspect of the invention, the situation in which the drainage action of the siphon pipe is impaired due to the provision of the small holes in the pipe wall of the siphon pipe cannot occur.
Therefore, there is an effect that the smooth drainage action of the siphon pipe and the drainage action of quickly draining the water remaining in the recess after the drainage is completed are exhibited.

According to the third aspect of the present invention, since the opening area of the small holes can be increased or decreased, there is an effect that the above-mentioned drainage action and drainage action can be efficiently managed.

[Brief description of drawings]

FIG. 1 is a plan view in which a pot bottom watering tank according to the invention described in claim 1 or 2 is partially omitted.

FIG. 2 is an enlarged cross-sectional view taken along the line II-II of FIG.

FIG. 3 is an enlarged cross-sectional view taken along the line III-III in FIG.

FIG. 4 is an enlarged cross-sectional view of a siphon tube used in the bowl bottom watering tank.

FIG. 5 is a cross-sectional view showing a main part of a siphon pipe 3 of a pot bottom irrigation tank according to an embodiment of the invention described in claim 3.

FIG. 6 is a sectional view showing a main part of a conventional example.

FIG. 7 is a sectional view showing a main part of another conventional example.

[Explanation of symbols]

V bowl 1 tray 2 recess 3 siphon tube 4 small holes 6 cover body

Front page continuation (58) Fields surveyed (Int.Cl. ⁷ , DB name) A01G 27/00

Claims (3)

(57) [Claims] 1. A bowl bottom irrigation tank in which a tray on which pots are placed is provided with a recess, and in this recess is provided a siphon pipe for discharging the nutrient water supplied to the tray, A bottom watering tank for pots, characterized in that a small hole for guiding the water in the recess to the passage inside the siphon tube is formed in the tube wall of the siphon tube. 2. The bowl bottom irrigation tank according to claim 1, wherein the size of the small holes is set so that the amount of water that can pass through the small holes is smaller than the amount of drainage of the in-pipe passage of the siphon pipe. 3. A bowl bottom irrigation tank in which a tray on which pots are placed is provided with a recess, and a siphon pipe for discharging the nutrient water supplied to the tray is provided in this recess, A small hole is formed on the siphon pipe, which is a long hole that guides the water in the recess to the pipe passage of the siphon pipe, and the small hole is provided with a cover body that can be opened and closed and whose opening area can be increased or decreased when opened. The bottom irrigation tank of the pot.