JPH0411706Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a blow-off nozzle that supplies bath water or water to bathtubs, swimming pools, etc., and is particularly capable of blowing out water in a mixed state with air and ozone. related to a water blowing nozzle.

[Prior art] In the case of a bath in a general home or a public bath, air is mixed with the bath water and forced into the bathtub, and air bubbles are sprayed onto the bather, and the impact force and the bursting of the bubbles are Pine surgery is performed on the body using derived ultrasonic waves. In this case, in addition to air, ozone is mixed into the bath water for the purpose of sterilizing the bath water and cleaning the body of the bather.

FIG. 4 shows a conventional example of such a device. As shown in the figure, a blowing nozzle 72 is attached to the side wall of the bathtub 71. A water passage 73 passes through the blow-off nozzle 72 in the axial direction, and a mixing chamber 74 is formed in the middle of this passage 73. A water supply pipe 75 is connected to the outer end of the flow path 73 , and bath water is forced into the flow path 73 at a predetermined pressure by a pump 76 and is ejected from the tip opening of the blow-off nozzle 72 . Also, mixing chamber 7
4 is connected to an air supply pipe 77 for supplying air and an ozone supply pipe 79 for supplying ozone. The air supply pipe 77 and the ozone supply pipe 79 are equipped with pumps 78 and 80, respectively, and the air and ozone are pressurized to a predetermined pressure and introduced into the mixing chamber 74, together with water. It is designed to be squirted into the bathtub 71. In the figure, 81 is an ozone generator that generates ozone.

[Problems to be solved by the invention] The reason why the air supply pipe 77 and the ozone supply pipe 79 require pumps 78 and 80, respectively, is because air and ozone are mixed into water against water pressure. This is to pressurize , air, and ozone, respectively. Therefore, in addition to the pump 76 that pumps water, the conventional device requires pumps 78 and 80 that pressurize air and ozone, respectively, making the entire device larger and more complex. Furthermore, since there are a large number of pumps, the power consumption for driving each pump is large, which not only increases operating costs, but also requires a pump that pressurizes air and ozone to have a capacity sufficient to withstand water pressure.

The present invention has been made in consideration of the above circumstances, and provides a water blowing nozzle that reduces the capacity and number of pumps and improves suction of air and ozone.

[Means for Solving the Problems] The water blowing nozzle according to the present invention has a first negative pressure chamber and a second negative pressure chamber having a large cross-sectional area in order in the water flow path communicating with the discharge port. An air supply pipe for supplying air to the first negative pressure chamber is connected thereto, and an ozone supply pipe for supplying ozone to the second negative pressure chamber is connected.

[Function] Since the present invention is configured as described above, the water pressure is reduced in the negative pressure chamber, and air and ozone can be sucked in well.

[Example] Hereinafter, the present invention will be specifically described with reference to an illustrative example.

First, we will introduce a second example of piping for a bath to which this invention is applied.
This will be explained using figures. A blowout nozzle 2 and a suction nozzle 3 are attached to the top and bottom of one side of the bathtub 1,
A circulation pipe is connected between these pipes to form a circulation path 4. In this circulation path 4, a filter 5, a heating means 7 such as a bathtub, and a pressure feeding means 8 such as a pump are arranged in series in this order. filter 5
The bathtub removes scale, human hair, etc. from the bath water in the bathtub, and is equipped with a filter cloth such as polyurethane or glass wool, and a deodorizing agent such as activated carbon. The heating means 7 heats the bath water to a set temperature, and then the bath water is sent to the blow-off nozzle 2 at a predetermined pressure by the pressure-feeding means 8, and is ejected into the bathtub 1 from the discharge port 21 of the blow-off nozzle 2. Ru. Further, an air supply pipe 9 is connected to this blow-off nozzle 2, and a pressurizing means 6 such as a pump and a purifier 10 are arranged in this air supply pipe 9 to supply clean air from which dust has been removed. It is becoming more and more popular. Reference numeral 11 denotes an ozone generator, and its ozone supply pipe 12 is connected to the blowing nozzle 2, and the ozone from the ozone generator 11 is ejected into the bath water to sterilize the bath water and provide medical treatment to the skin of bathers. , cleaning is now being carried out. Therefore, with the above-described configuration, bath water is filtered, sterilized, and heated, making it possible to recycle it and saving tap water, well water, and the like.

FIG. 1 is a cross-sectional view of one embodiment of the blow-off nozzle 2 of the present invention used in such a bath system. The blow-off nozzle 2 consists of a connecting pipe 22, a main body pipe 23, and an outlet pipe 24 that are screwed together, and a water flow path 25 is formed to pass through these pipes 22, 23, 24 in the axial direction. There is. The connecting pipe 22 is connected to the water circulation path 4, and is used to forcefully feed bath water at a predetermined pressure into the flow path 25. Also, main body tube 2
The side wall of the bathtub 1 is sandwiched between the outlet pipe 3 and the outlet pipe 24 via a gasket 31, whereby the blow-off nozzle 2 is attached to the bathtub 1. Here, a discharge port 21 of a predetermined diameter passes through the outlet pipe 24, and water, air, and ozone are mixed at the discharge port 21.
It is designed to forcefully squirt into the bathtub 1 from the open end of 1.

The flow path 25 of the blowout nozzle 2 configured in this way
From the upstream side, there is a first flow path 26 and a first negative pressure chamber 2.
7. A second flow path 28 and a second negative pressure chamber 29 are connected in order, and the second negative pressure chamber 29 is connected to the discharge port 21. Both the first flow path 26 and the second flow path 28 are made up of small diameter through holes with a small cross-sectional area, and the water is compressed when passing through these flow paths 26 and 28. . On the other hand, both of the first negative pressure chambers 27 and 29 have a larger cross-sectional area and a larger diameter than those of the flow paths 26 and 28. Therefore, the water introduced into the negative pressure chambers 27 and 29 through the small-diameter first flow path 26 and second flow path 28 rapidly expands and enters a reduced pressure state. In this embodiment, the air supply pipe 9 is connected to the first negative pressure chamber 27, and the ozone supply pipe 12 is connected to the second negative pressure chamber 29. By connecting the air supply pipe 9 and the ozone supply pipe 12 to each of the negative pressure chambers 27 and 29 in this manner, air and ozone are vigorously sucked into the water under reduced pressure and mixed with the water. Therefore, since a large amount of air and ozone are sucked into the water, a large amount of these air bubbles can be supplied into the bathtub 1, thereby increasing bathing effects such as pine surge and sterilization. In addition, since air suction is performed well, the capacity of the pressurizing means 6 can be reduced (1/5 to 1/10 of the conventional pressure), making it possible to downsize the device and reduce power consumption. . Here, the air supply pipe 9 is connected to the first negative pressure chamber 27 so as to be perpendicular to the water flow.
Ozone supply pipe 12 in the second negative pressure chamber 29
The connecting part is bent parallel to the water flow direction. Thereby, ozone is introduced into the second negative pressure chamber 29 in the same direction as the water flow, so that ozone can be sucked in well. Therefore, the ozone supply pipe 12 does not require pressurizing means such as a pump, and the apparatus can be simplified. Note that the downstream sides of each negative pressure chamber 27, 29 are tapered surfaces 27a, 29a whose diameter gradually decreases toward the water flow path. As a result, water flows through the tapered surfaces 27a, 2
Since the water is smoothly guided to the second flow path 28 and the discharge port 21 along the line 9a, the water can be ejected continuously without leaving a trace. Further, the ratio between the diameter D of the discharge port 21 of the outlet pipe 24 and the diameter d of the first and second flow paths 26 and 28 is set to approximately 2:1. This is because if the diameter D of the discharge port is less than 2, suction of ozone and air is not good, and if it is more than 2, the ejection pressure of the bath water decreases and the bath water cannot be ejected as a jet stream. This value is an empirical value obtained as a result of numerous experiments by the present inventor, and the theoretical basis is still unknown, but in cases other than the above values, good air suction and water This is supported by the fact that the water cannot be ejected properly.

FIG. 3 is a sectional view of another embodiment of the present invention,
Elements that are the same as those in the previous embodiment are designated by the same reference numerals. In this embodiment, guide tubes 30 and 31 are provided in the first negative pressure chamber 27 and the second negative pressure chamber 29, respectively. Each guide cylinder 30, 31 has a first
It has approximately the same diameter as the flow path 26 and the second flow path 28, and is provided in the same direction as the water flow. The air supply pipe 9 and the ozone supply pipe 12 are connected to the respective negative pressure chambers 27 and 29 so as to be located somewhat on the rear side of the guide cylinders 30 and 31. With such a structure, the water introduced into the flow path 25 is smoothly guided downstream without remaining in each negative pressure chamber 27, 29, so that the pressure in each negative pressure chamber 27, 29 is surely reduced. At the same time, air and ozone are efficiently sucked into the water stream. Therefore, air and ozone can be sucked more smoothly, so that not only the ozone pressurizing means but also the air pressurizing means can be omitted. This makes it possible to simplify the device and reduce power consumption. Note that in this embodiment, the air supply pipe 9 is connected to the flow path 2.
Although the connection is diagonal to 5, this is to reduce the resistance of air colliding with water, making air suction even better.

In the above embodiments, the present invention is applied to baths, but the present invention is not limited thereto, and can be similarly applied to other fields such as pools, water tanks in buildings, and fish farming facilities.

[Effects of the invention] As described above, the present invention connects the air supply pipe and the ozone supply pipe to the first negative pressure chamber and the second negative pressure chamber, respectively, which reduce the pressure of pressurized water, so that air and ozone cannot be sucked. It can be done efficiently. Therefore, the means for pressurizing air or ozone can be omitted or the capacity can be reduced, and the apparatus can be simplified and operating costs can be reduced.

[Brief explanation of the drawing]

Figure 1 is a sectional view of one embodiment of the present invention, Figure 2 is a piping system diagram when applied to a bath, Figure 3 is a sectional view of another embodiment, and Figure 4 is a system diagram of a conventional example. be. 2...Blowout nozzle, 9...Air supply pipe, 12...
... Ozone supply pipe, 25 ... Channel, 27 ... First reduced pressure chamber, 29 ... Second reduced pressure chamber.

Claims (1)

[Scope of utility model registration request] A first negative pressure chamber and a second negative pressure chamber having a large cross-sectional area are sequentially formed in a water flow path communicating with the discharge port, and an air supply pipe for supplying air to the first negative pressure chamber is connected. and an ozone supply pipe for supplying ozone to the second negative pressure chamber is connected to the water blowing nozzle.