JP2010104874A - Gas-dissolved water supplying apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas-dissolved water supplying apparatus with variation of the flowing rate of oxygen-enriched air due to variation of the surrounding temperature controlled. <P>SOLUTION: The gas-dissolved water supplying apparatus causes a negative pressure generated in the water flow in a water pipe 1 to act on an oxygen-enriching means 3 through introduction piping 4 to generate oxygen-enriched air, introduces the oxygen-enriched air generated by the oxygen-enriching means 3 from the introduction piping 4 into the water pipe 1, dissolves the introduced oxygen-enriched air in water in a dissolving tank 5 to generate gas-dissolved water and discharges the gas-dissolved water from a discharge outlet 7. The oxygen-enriching means 3 is provided with a temperature detecting means 32 for detecting the temperature of an oxygen-enriching membrane 31 or the temperature of the atmosphere near the oxygen-enriching membrane 31 and a heating means 33 for heating the oxygen-enriching membrane 31 or the atmosphere near the oxygen-enriching membrane 31, and the oxygen-enriching membrane 31 or the atmosphere near the oxygen-enriching membrane 31 is heated by the heating means 33 according to a temperature detected by the temperature detecting means 32 so that the temperature of the oxygen-enriching membrane 31 of the oxygen-enriching means 3 or that of the atmosphere near the oxygen-enriching membrane 31 is kept at a predetermined temperature. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a gas-dissolved water supply device.

  Conventionally, oxygen-enriched air generated by an oxygen-enriching device is introduced into a pipe that circulates bathtub water in the bathtub with a pump, oxygen-enriched air is mixed into the bathtub water, and this is again discharged into the bathtub. An oxygen-enriched hot water supply apparatus is known (see, for example, Patent Document 1).

In this oxygen-enriched hot water supply apparatus, a throttle portion is provided in a pipe, and oxygen-enriched air generated by the oxygen enricher is introduced into the pipe by a negative pressure generated in the throttle. In the oxygen enrichment apparatus, an oxygen enriched film is used, and oxygen is selectively permeated through the oxygen enriched film to generate oxygen enriched air. Due to the characteristics of the oxygen-enriched membrane, the permeation flow rate varies depending on the environmental temperature. Therefore, in the oxygen-enriched hot water supply apparatus, the flow rate of oxygen-enriched air introduced into the pipe line varies, and this variation is the pump of the pipe line. When the gas-liquid mixing ratio in the interior is changed and the gas ratio is high, there is a possibility that a problem such as air lock of the pump may occur. Therefore, in order to secure a desired gas flow rate, a vacuum pump is provided, the vacuum pressure by the vacuum pump is applied to the oxygen-enriched membrane, and oxygen-enriched air is excessively sucked, and all or part of it is placed in the pipe line. It is possible to introduce. That is, it is conceivable that the flow rate is set so that a desired flow rate is obtained even under the assumed worst temperature condition (low temperature condition), and excess air is discharged to others when there is too much air under high temperature conditions. However, there is a problem that the cost becomes high, such as the need for a vacuum pump or another route.
JP 2004-350932 A

  This invention is made | formed in view of the above situations, and makes it a subject to provide the gas-dissolved water supply apparatus which suppressed the dispersion | variation in the flow volume of oxygen-enriched air by the fluctuation | variation of environmental temperature.

  The present invention is characterized by the following in order to solve the above problems.

  A water pipe, a pump provided in the middle of the water pipe to send water in the water pipe to generate a water flow, an oxygen enrichment means having an oxygen enriched membrane and generating oxygen enriched air, and the oxygen The oxygen-enriched air introduced into the water pipe installed in the water inlet pipe downstream of the inlet of the inlet pipe and the oxygen-enriched air generated by the enrichment means is dissolved in water. And a discharge port provided on the downstream side of the dissolution tank for discharging water in which gas is dissolved, and negative pressure generated in the water flow of the water pipe is applied to the oxygen enrichment means from the introduction pipe. The oxygen-enriched air generated by the oxygen-enriching means is introduced from the introduction pipe into the water pipe, and the introduced oxygen-enriched air is dissolved in water in the dissolution tank to generate gas-dissolved water, which is discharged from the discharge port. A gas-dissolved water supply device, wherein the oxygen-enriching means includes a temperature of the oxygen-enriched membrane. Or a temperature detecting means for detecting the ambient temperature in the vicinity thereof, and a heating means for heating the oxygen enriched film or the atmosphere in the vicinity thereof, and the temperature of the oxygen enriched film in the oxygen enriched means or the atmosphere in the vicinity thereof. The oxygen-enriched film or the atmosphere in the vicinity thereof is heated by the heating means according to the temperature detected by the temperature detection means so that the temperature is maintained at a preset temperature.

  According to the present invention, the oxygen-enriched film or the oxygen-enriched film according to the temperature detected by the temperature detecting means so that the temperature of the oxygen-enriched film of the oxygen-enriched means or the ambient temperature in the vicinity thereof is maintained at a preset temperature. Since the surrounding atmosphere is heated by the heating means, even if the environmental temperature of the oxygen enrichment means fluctuates, a flow rate corresponding to the oxygen enriched film at a predetermined temperature is secured, and the flow rate of the oxygen enriched air is reduced. Variation is suppressed. When the variation in the flow rate of the oxygen-enriched air is suppressed, the fluctuation of the gas-liquid mixing ratio inside the pump is also suppressed, and there is no problem of causing an air lock in the pump, and the gas dissolved water supply device is driven comfortably. be able to. In addition, it is not necessary to install a vacuum pump or a separate path for exhausting excess air, and the cost is reduced, and it is not necessary to secure a space for installing the vacuum pump or another path, and the device can be downsized. .

  The present invention has the features as described above. The best mode for carrying out the present invention will be described below.

  Drawing 1 is a schematic structure figure of the gas dissolution water supply device for bathtubs which is one embodiment of the present invention.

  A suction port 6 and a discharge port 7 are provided on the side wall of the bathtub 9, and the bathtub water W in the bathtub 9 is sucked into the suction port 6, and oxygen-enriched air is dissolved in the bathtub water W at the discharge port 7. The dissolved gas dissolved water is discharged.

  The suction port 6 and the discharge port 7 are connected to each other by a water pipe 1 for bath water circulation disposed outside the bath 9, and a pump 2 is disposed in the middle of the water pipe 1. Bath water W in the bathtub 9 is sucked from the suction port 6 and discharged from the discharge port 7 into the bathtub 9 through the water conduit 1.

  A gas introduction part 8 is provided in the water flow pipe 1 on the upstream side of the pump 2, and an introduction pipe 4 is connected to the gas introduction part 8. Further, an oxygen enrichment means 3 is disposed upstream of the introduction pipe 4, and oxygen-enriched air produced by the oxygen enrichment means 3 passes from the gas introduction section 8 via the introduction pipe 4. It is introduced into the water pipe 1.

  The oxygen-enriching means 3 is composed of an oxygen-enriched film 31 that separates nitrogen and oxygen and selectively permeates oxygen, and oxygen in the oxygen-enriched film 31 permeates a negative pressure lower than atmospheric pressure. By acting on the side (downstream of the oxygen-enriched film 31), oxygen is selectively taken in from the air upstream of the oxygen-enriched film 31 and air having a relatively high oxygen concentration (oxygen-enriched air) ) Is generated. In the vicinity of the oxygen-enriched film 31, air enriched with nitrogen that is difficult to permeate stays. For this reason, in this embodiment, the ventilation fan 34 which ventilates the surface of the oxygen enrichment film | membrane 31 is provided.

  This oxygen-enriched film 31 generally has the following characteristics. That is, when the negative pressure applied to the oxygen-enriched film 31 is constant, the permeate flow rate increases as the temperature of the oxygen-enriched film 31 increases, and the oxygen concentration of air after permeating the oxygen-enriched film 31 decreases. To do. On the contrary, if the temperature is lowered, the permeation flow rate is lowered, and the oxygen concentration of the air after permeating the oxygen-enriched film 31 is increased. The supply amount of oxygen-enriched air determined by the product of the oxygen concentration of the air after permeating the oxygen-enriched film 31 and the permeation flow rate generally tends to increase as the temperature increases. Therefore, when the environmental temperature in the vicinity of the oxygen-enriched film 31 varies, the permeate flow rate of the oxygen-enriched film 31 varies and the flow rate of oxygen-enriched air varies.

  Therefore, in the present embodiment, as shown in FIG. 1, the temperature detection means 32 for detecting the temperature of the oxygen-enriched film 31 or the ambient temperature in the vicinity thereof, and the heating for heating the oxygen-enriched film 31 or the atmosphere in the vicinity thereof. Means 33 is provided so that the temperature of the oxygen-enriched film 31 of the oxygen-enriching means 3 or the ambient temperature in the vicinity thereof is maintained at a preset temperature.

  The temperature detection means 32 is composed of, for example, a thermistor 321 and is installed inside a case 35 that houses the oxygen-enriched film 31 and the ventilation fan 34, and always detects the ambient temperature in the vicinity of the oxygen-enriched film 31. ing. The heating means 33 is composed of, for example, a heater 331 such as a heating wire, a lamp, or a PTC, and is installed inside the case 35 similarly to the thermistor 321, and is electrically connected to the thermistor 321 and the heater 331. The oxygen enriched film 31 or the atmosphere in the vicinity thereof is heated by the heater 331 according to the temperature detected by the thermistor 321 by the control unit. The thermistor 321 and the heater 331 are each installed in the vicinity of the oxygen-enriched film 31 of the oxygen-enriching means 3, and if the oxygen-enriched film 31 and the ambient temperature in the vicinity thereof can be detected and heated, their installation locations are It is not limited to the above location.

  The set temperature is preferably set to a temperature higher than the room where the oxygen enriching means 3 is installed, for example, a constant temperature between 40 ° C. and 50 ° C. This is because the temperature can be controlled by turning the heater 331 on / off. If the temperature detected by the thermistor 321 is less than 50 ° C. when set to 50 ° C., the heater 331 is turned on to heat the inside of the case 35 until the detected temperature reaches 50 ° C. The temperature of 31 or the ambient temperature in the vicinity thereof is raised. When the detected temperature reaches 50 ° C., the heater 331 is turned off. By repeating this, the temperature of the oxygen-enriched film 31 of the oxygen-enriching means 3 or the ambient temperature in the vicinity thereof can be controlled within a certain range. Since the supply amount of oxygen-enriched air becomes a flow rate corresponding to the oxygen-enriched film 31 within the temperature range, variation in the flow rate of oxygen-enriched air is suppressed.

  The gas introduction part 8 of the water flow pipe 1 has an ejector structure. When the water flow generated by driving the pump 2 passes, a negative pressure is generated, and this negative pressure is supplied from the introduction pipe 4 to the oxygen enrichment means 3. By acting on the membrane 31, the oxygen-enriched air generated by the oxygen enriching means 3 is introduced from the introduction pipe 4 to the water pipe 1. When oxygen-enriched air is introduced into the water conduit 1, the oxygen-enriched air is mixed into the bathtub water W flowing through the water conduit 1 to generate gas-liquid mixed water. This gas-liquid mixed water does not have such a high gas ratio that an air lock is generated in the pump 2 by suppressing variations in the flow rate of the oxygen-enriched air introduced into the water pipe 1.

  A dissolution tank 5 is disposed in the water pipe 1 between the pump 2 and the discharge port 7, and the gas-liquid mixed water is passed through a meandering path in the dissolution tank 5 or the gas-liquid mixed water is stirred. Thus, oxygen-enriched air is dissolved in the bathtub water W to generate gas-dissolved water.

  The dissolved gas produced in the dissolution tank 5 is discharged from the discharge port 7 into the bathtub 9.

  The gas-dissolved water supply device having the above-described configuration can be driven comfortably without the problem of air lock in the pump 2. In addition, it is not necessary to install a vacuum pump or a separate route for exhausting excess air to reduce the variation in the flow rate of oxygen-enriched air, and it is not necessary to secure a space for installing the vacuum pump or another route. Therefore, it is possible to design the device as a small size.

  While the present invention has been described based on the embodiments, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention. For example, although the case where the gas-dissolved water supply device of the present invention is applied to a bathtub has been described, it may be applied to a shower device or the like. When applied to a shower device, for example, a water pipe is connected to a water pipe, oxygen-enriched air is introduced into the tap water from the water pipe, and gas dissolved water is discharged from the shower head through the dissolution tank. May be.

It is a schematic block diagram of the gas dissolved water supply apparatus for bathtubs which is one Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Water pipe 2 Pump 3 Oxygen enrichment means 31 Oxygen enrichment film 32 Temperature detection means 321 Thermistor 33 Heating means 331 Heater 34 Ventilation fan 35 Case 4 Introducing piping 5 Dissolution tank 6 Intake port 7 Discharge port 8 Gas introduction part 9 Bathtub W Bathtub water

Claims (1)

  A water pipe, a pump provided in the middle of the water pipe to send water in the water pipe to generate a water flow, an oxygen enrichment means having an oxygen enriched membrane and generating oxygen enriched air, and the oxygen The oxygen-enriched air introduced into the water pipe installed in the water inlet pipe downstream of the inlet of the inlet pipe and the oxygen-enriched air generated by the enrichment means is dissolved in water. And a discharge port provided on the downstream side of the dissolution tank for discharging water in which gas is dissolved, and negative pressure generated in the water flow of the water pipe is applied to the oxygen enrichment means from the introduction pipe. The oxygen-enriched air generated by the oxygen-enriching means is introduced from the introduction pipe into the water pipe, and the introduced oxygen-enriched air is dissolved in water in the dissolution tank to generate gas-dissolved water, which is discharged from the discharge port. A gas-dissolved water supply device, wherein the oxygen-enriching means includes a temperature of the oxygen-enriched membrane. Or a temperature detecting means for detecting the ambient temperature in the vicinity thereof, and a heating means for heating the oxygen enriched film or the atmosphere in the vicinity thereof, and the temperature of the oxygen enriched film in the oxygen enriched means or the atmosphere in the vicinity thereof. A gas-dissolved water supply apparatus, wherein an oxygen-enriched film or an atmosphere in the vicinity thereof is heated by a heating means in accordance with the temperature detected by the temperature detection means so that the temperature is maintained at a preset temperature.

Images