JP2001046261A - Chemical supply cartridge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To discharge air of a powder or solid chemical in a chemical-filled chamber and to extend an operating life. SOLUTION: An exudation membrane 8 is attached to a chemical lead-through opening at the lower end of a cartridge case 1, and an air outlet 13 is formed at the upper end of the case 1. Hydrophobic ventilation membranes 9 are arranged at an interval in the vicinity of the air outlet 13 to form an air chamber 16 between the membranes 9. A chemical-filled chamber 19 is disposed between the ventilation membrane 9 and the exudation membrane 8, and the chemical filled chamber 10 is filled with a cylinder with a large number of holes and a powder or solid chemical. By inserting the cylinder with a large number of holes, it is possible to discharge air of a powder or sold chemical in the chemical-filled chamber 10 reliably.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cartridge for a drug supply device for eluting a drug such as a dechlorinating agent into supply water and spraying the supply water containing the drug.

[0002]

2. Description of the Related Art In recent years, there has been proposed a medicine supply shower in which a cartridge filled with a medicine such as a dechlorinating agent is incorporated in a shower head so that the medicine is eluted into supply water when the shower is used. In this cartridge, an exuding membrane is attached to the medicine outlet at the lower end of the cartridge case, while an air outlet is provided at the upper end of the cartridge case, and two hydrophobic gas permeable membranes are separated in the vicinity of the air outlet in the cartridge case. And forming an air chamber between the adjacent hydrophobic gas permeable membranes, and filling the drug filling chamber between the hydrophobic gas permeable membrane and the exuding membrane at the lower end of the air chamber with a powder or solid drug, A drug supply cartridge which is filled with a solution of a powder or solid drug in the medicine filling chamber by flowing supply water into the medicine filling chamber through an exuding membrane at the lower end of the cartridge case when used.

[0003]

However, in this conventional cartridge, when powder or solid medicine in the medicine filling chamber is supplied with a high supply pressure when the supply water flows in, the powder or solid does not completely turn into a solution and the powder or solid does not rise. , And hits the hydrophobic gas permeable membrane to hinder the discharge of air, so that air in powder or solid is not discharged. And
If air remains in the cartridge, when the shower is used, the air is compressed by the pressure of the supply water, and when the shower is stopped, the air pushes the drug solution in the cartridge case out of necessity to the outside of the cartridge. Causes the problem of shortening the life of the device. Therefore, the present invention
An object of the present invention is to provide a medicine supply cartridge that can solve these problems.

[0004]

Means for Solving the Problems As means for solving the above-mentioned problems, the invention of claim 1 is to provide an exuding membrane at the medicine outlet at the lower end of the cartridge case, while providing air at the upper end of the cartridge case. A discharge port is provided, a hydrophobic gas permeable membrane is provided in the vicinity of the air discharge port in the cartridge case, and a powder or solid drug is filled in the drug filling chamber between the hydrophobic gas permeable membrane and the exuding membrane, and used. A drug supply cartridge that fills the drug-filling chamber with a drug solution by flowing supply water into the drug-filling chamber through the exuding membrane at the lower end of the cartridge case, and the air of powder or solid drug in the drug-filling chamber is released. In order to make it easier, a passage has been added to the road. In the case of this invention,
Since there is an air passage in the powder or solid medicine, the supply water quickly spreads and the medicine filling chamber is filled with the medicine solution, so that the air is discharged from the air discharge port.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the accompanying drawings. FIG. 1 shows an overall configuration of a medicine supply shower using a medicine supply cartridge 1 according to the present invention, and in the figure, reference numeral 10 denotes a shower head of this shower. The shower head 2 has a lower body 2 a having a water supply port 3 at a lower end,
An upper body 2b having a water sprinkling part 4 at the upper end is screwed via a packing 5, and a medicine supply cartridge 1 according to the present invention is urged downward by a spring 6 in a hollow part formed on the inner surface thereof. It is stored in the state where it was put.

In the case of this embodiment, the inside of the drug supply cartridge 1 is filled with ascorbic acid as a dechlorinating agent having a strong chlorine-reducing action, and this ascorbic acid is eluted in the shower head 2. It removes residual chlorine in tap water.

FIG. 2 shows the entire structure of the cartridge case 7. The cartridge case 7 is formed of a case main body 25a and a cover 25b, and a space narrowed by the exuding membrane 8 and the lower hydrophobic gas permeable membrane 9b in the cartridge case 7 is a medicine filling chamber 10. Multi-hole cylinder 11
And ascorbic acid powder 32 or a solid obtained by pressing and hardening the powder is filled without moisture. In the cover 25b, a space sandwiched between the lower water-permeable membrane 28b and the upper air-permeable membrane 28a is an air chamber 16 and is filled with air. The medicine supply cartridge 1 configured as described above is manufactured and shipped without water in the medicine filling chamber 10, is distributed and stored as it is, is provided to the consumer, and is supplied to the consumer as follows. Served for use.

First, a new drug supply cartridge 1
Is incorporated in the shower head 2, and in this state, when the supply water is introduced into the shower head 2 from the supply port 3,
The medicine supply cartridge 1 receives the pressure of the supply water as shown in FIG. At this time, the supply water is the exuding membrane 8 of the drug supply cartridge 1.
The water is introduced into the medicine supply cartridge 1, and further circulates around the outer periphery of the medicine supply cartridge 1, and is sprinkled from the water spraying section 4 to the outside of the shower head 2. The inside air is pushed up, and the air is discharged to the outside of the medicine supply cartridge 1 from the air discharge port 13 through the lower gas permeable membrane 28b and the upper gas permeable membrane 28a, and at the same time, the supply water flows into the medicine filling chamber 10. I do. Thereby, the liquid level of the supply water in the medicine filling chamber 10 gradually rises.

At this time, the air contained in the ascorbic acid powder is discharged from the air discharge port 13 through the multi-hole cylinder 11 which is an air discharge passage. The rise in liquid level
When the liquid surface reaches the lower surface of the lower hydrophobic gas permeable membrane 9b, it is blocked by the hydrophobic gas permeable membrane 9b. Therefore, as a result, the medicine filling chamber 1 of the medicine supply cartridge 1
0 is filled with the supply water, and at the same time, parts other than the exudation membrane 8 are kept substantially sealed. At this time, when the inside of the medicine filling chamber 10 is filled with a supersaturated solution of ascorbic acid, Thereafter, the dynamic pressure of the supply water supplied to the exudation membrane 8 causes the ascorbic acid solution in the drug supply cartridge 1 to be eluted through the exudation membrane 8, and the supply water in which the drug is dissolved is diffused by the sprinkling section 4 at the tip of the shower head 2. Sprinkled to the outside through.

As shown in FIG. 2 and its enlarged view, the multi-hole cylinder 11 is formed by forming a plurality of holes in a stainless steel plate by etching and rounding the holes, or by rounding a mesh sheet into a cylindrical shape. Further, the multi-hole cylinder 11 may be formed of a hollow fiber membrane. The multi-hole cylinder 11 is provided with a plurality of support pieces 22 on the upper and lower parts, and is supported and positioned on the inner wall of the cartridge case 7.

When the supply water is stopped from this state, the medicine supply cartridge 1 is displaced downward by the force of the spring 6, and the medicine outlet 14 of the medicine supply cartridge 1 is closed by the valve seat 15.

In the above embodiment, ascorbic acid having a dechlorinating function is used as a drug to be filled in the drug supply cartridge 1. Of course, other than a dechlorinating agent, an aromatic, a bactericide, a Chinese medicine, an emulsion It is also possible to fill the drug supply cartridge 1 with a drug such as a pH adjuster. Furthermore, the medicine supply cartridge 1 can be incorporated not only in the shower head but also in the middle of piping or a dedicated faucet.

[0013]

According to the first aspect of the present invention, an exuding film is provided at the medicine outlet at the lower end of the cartridge case, while an air outlet is provided at the upper end of the cartridge case, and a hydrophobic portion is provided near the air outlet in the cartridge case. A water-permeable membrane is provided, and the drug filling chamber between the hydrophobic gas-permeable membrane and the exuding membrane is filled with a powdered or solid drug, and supply water flows into the drug filling chamber through the exuding membrane at the lower end of the cartridge case during use. By providing a drug supply cartridge that fills the drug-filled chamber with a drug solution, the air containing the powder or solid drug in the drug-filled chamber is discharged, so that an air discharge passage serving as an air passage is provided. Thus, the air of the powder or solid medicine in the medicine filling chamber can be reliably discharged. As a result, the service life is reliably extended as compared with the conventional cartridge.

According to the second aspect of the present invention, since the air discharge passage is a cylindrical passage having a large number of holes, the air contained in the powder medicine in the medicine filling chamber is effectively passed through the large number of holes in the side wall of the cylindrical passage. It can be guided to the air discharge port side through the inside of the cylinder. Further, this cylindrical passage can be manufactured separately from the cartridge case, and the manufacture of the cartridge can be facilitated.

[Brief description of the drawings]

FIG. 1 is a sectional view of an entire shower using a medicine supply cartridge according to one embodiment of the present invention.

FIG. 2 is a sectional view of a medicine supply cartridge.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Drug supply cartridge 7 ... Cartridge case 8 ... Exudation membrane 9a, 9b ... Hydrophobic membrane 10 ... Drug filling chamber 11 ... Multi-hole cylinder (air discharge passage) 13 ... Air discharge port 14 ... Drug outlet 16 ... Air Room

Claims (2)

[Claims] An exuding film is provided at a medicine outlet at a lower end of a cartridge case, an air outlet is provided at an upper end of the cartridge case, and a hydrophobic gas permeable film is provided near the air outlet in the cartridge case. At the same time, the drug filling chamber between the hydrophobic gas permeable membrane and the exuding membrane is filled with a powdered or solid drug, and the supply water flows into the drug filling chamber through the exuding membrane at the lower end of the cartridge case during use. In a medicine supply cartridge for filling a filling chamber with a medicine solution, an air discharge passage serving as an air passage is provided for discharging air containing powder or solid medicine in the medicine filling chamber. Drug supply cartridge. 2. The medicine supply cartridge according to claim 1, wherein the air discharge passage is a cylindrical passage having a large number of holes.