JP2006181290A - Bathtub apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bathtub apparatus capable of extending a time required for lowering a moisture content of the keratin after taking a bath, providing a person after taking the bath with an enough time for leisurely caring the skin with face lotion with the skin state moisturized, improving the moisturizing effect and improving the skin into moisturized one. <P>SOLUTION: This bathtub apparatus is provided with an oxygen enriched air supply means 2 supplying oxygen enriched air including oxygen with higher concentration than the oxygen concentration in air into bathwater W in a bathtub 1. The amount of dissolved oxygen in the bathwater is retained to 7-13 ml/L by the oxygen enriched air supply means 2 supplying the oxygen enriched air into the bathwater in the bathtub 1. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a bathtub device that increases the amount of dissolved oxygen in bath water in a bathtub.

  It is said that if the skin is moistened with a lotion or the like after the bath has been moistened, the moisturizing effect is enhanced, and the moisturizing effect moisturizes the skin.

  However, when bathing, the amount of moisture in the skin of a person's skin temporarily increases and the skin becomes moist, but when bathing, the sebum covering the surface of the skin is peeled off, so a short time (about approx. In about 10 to 13 minutes), the amount of water in the keratin is drastically reduced, resulting in a dry skin than before bathing. For this reason, in normal bathing, the above moisturizing effect cannot be enhanced unless the skin is cleaned with a lotion or the like within a short time after bathing.

  However, after bathing, it takes time to wipe the body and wear clothes. After bathing, cleaning the skin with lotion within a short time of about 10 to 13 minutes It is extremely troublesome, and the above-mentioned short time is not sufficient time for skin care. For this reason, there are few people who care for skin with lotion within a short time of about 10 to 13 minutes after bathing, and people who care for skin with lotion after some time has passed after bathing. There is a problem that the moisturizing effect cannot be effectively enhanced.

  In recent years, a microbubble generator has been installed in the bathtub to dissolve the air in the bath water sucked from the bathtub and to discharge the bath water in which the air is dissolved into the bathtub to generate microbubbles in the bathtub. A microbubble generating bathtub device is provided (see, for example, Patent Document 1).

  In the conventional example shown in Patent Document 1, air is supplied as fine bubbles into the bath water. However, air in the atmosphere (oxygen concentration 21%) is simply dissolved in the bath water to form fine bubbles. Therefore, the amount of dissolved oxygen in the bath water is almost the same as when fine bubbles are not generated, and the amount of dissolved oxygen in the bath water hardly changes even if the generation of fine bubbles is continued for a long time.

  By the way, if the amount of dissolved oxygen in the bath water is small, the oxygen partial pressure of the bath water is low, and the oxygen in the bath water is difficult to be supplied into the stratum corneum due to the osmotic pressure. For this reason, the dissolved oxygen in the bath water does not act on the keratin natural moisturizing factor (NMF), and the water retention capacity is not improved.

Therefore, even in a bathtub apparatus in which air in the atmosphere (oxygen concentration 21%) is simply dissolved in bath water to generate fine bubbles, the amount of horny water in a short time (about 10 to 13 minutes) after bathing Drops rapidly and becomes dry skin, and there is a problem similar to the above-mentioned ordinary bathtub apparatus. In addition, since air in the atmosphere (oxygen concentration 21%) is simply dissolved in the bath water to generate fine bubbles, the comfort level is not improved so much and the burden on the cardiopulmonary function is not reduced.
JP 2002-330885 A

  The present invention has been invented in view of the above-mentioned conventional problems, and it is possible to extend the time required for reducing the amount of water in the keratin after bathing for a longer time than before, so that makeup can be applied with the skin moist after bathing. You can take care of your skin with plenty of water, improve the moisturizing effect, moisturize your skin, improve makeup, and comfort while taking a breath while taking a bath. It is an object of the present invention to provide a bathtub device that can raise the load and reduce the burden on the cardiopulmonary function.

  In order to solve the above problems, the bathtub apparatus of the present invention is an oxygen-enriched air supply means 2 for supplying oxygen-enriched air containing oxygen at a higher concentration than the oxygen concentration in the air into the bath water W in the bathtub 1. And the amount of dissolved oxygen in the bath water is set to 7 ml / L to 13 ml / L by supplying the oxygen-enriched air into the bath water in the bathtub 1 by the oxygen-enriched air supply means 2. is there.

  By adopting such a configuration, the dissolved oxygen concentration in the bath water W in the bathtub 1 becomes higher than the bath water W in the normal bathtub 1, and the bath water W is higher than the oxygen partial pressure of the horny skin of human skin. Oxygen partial pressure of the body increases, osmotic pressure is generated in the body bath water W to promote water permeation, and high concentration of dissolved oxygen acts on natural moisturizing factor (NMF) in the stratum corneum. To improve. In addition, a high concentration of dissolved oxygen acts on intercellular lipids in the stratum corneum, improving the water retention capacity. This makes it possible to prolong the time required to reduce the amount of horny water after bathing, so that the skin can be moisturized with lotion, etc. while the skin is moistened after bathing, providing a moisturizing effect. Increases and moisturizes the skin, improving the makeup paste. In addition, skin breathing can be performed during bathing, so that the comfort of bathing can be increased and the burden of cardiopulmonary function can be reduced.

  Moreover, it is preferable to provide the fine bubble generator 3 which receives the supply of oxygen-enriched air from the oxygen-enriched air supply means 2 and generates fine bubbles made of oxygen-enriched air in the bath water.

  Thus, by supplying oxygen-enriched air as fine bubbles in the bath water W of the bathtub 1, the fine bubbles of oxygen-enriched air are widely dispersed in the bath water W in the bathtub 1 and stay for a long time. Thus, the amount of dissolved oxygen in the bath water W in the bathtub 1 increases evenly, and the amount of dissolved oxygen in the bath water W can be easily set to a high concentration of dissolved oxygen. Furthermore, the part in the bath water W in the bathtub 1 of the body is evenly wrapped with fine bubbles, and the fine bubbles gently convey the warmth of hot water, warming up to the core of the body, and making it difficult to cool down.

  Moreover, it is preferable that the oxygen concentration of the oxygen-enriched air supplied from the oxygen-enriched air supply means 2 is 25% to 40%.

  That is, when the oxygen concentration of the oxygen-enriched air supplied from the oxygen-enriched air supply means 2 is less than 25%, the bath water W in the ordinary general bath 1 is supplied to the bath water W. The target amount of dissolved oxygen cannot be achieved regardless of the amount of dissolved oxygen. In addition, when the oxygen concentration of the oxygen-enriched air supplied from the oxygen-enriched air supply means 2 exceeds 40%, the amount of oxygen-enriched air released from the water surface into the bathroom 6 space without being dissolved in the bath water W. This is not preferable because the oxygen concentration in the bathroom 6 space becomes higher than necessary and the burden on the body is large. On the other hand, the oxygen concentration of the oxygen-enriched air supplied from the oxygen-enriched air supply means 2 is 25% to 40% as described above, so that the amount of dissolved oxygen in the bath water W in the bath 1 is the purpose. And the oxygen concentration in the bathroom 6 can be prevented from becoming higher than necessary.

  As described above, the present invention can prolong the time required for the decrease in the amount of horny water after bathing, and perform skin care with a lotion or the like while the skin is moistened after bathing. It has the effect of improving the moisturizing effect and moisturizing the skin, improving the makeup paste, and also increasing the comfort level during bathing and reducing the burden of cardiopulmonary function during bathing. There is an effect that it can be planned.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.

  An oxygen-enriched air supply means 2 is provided in the bath water W in the bathtub 1 for supplying oxygen-enriched air containing oxygen at a higher concentration than the oxygen concentration in the air into the bath water W in the bathtub 1. Examples of the oxygen-enriched air supply means 2 include an oxygen enricher 2a and an oxygen cylinder. In the following description, an example in which the oxygen enrichment device 2a is used as the oxygen enriched air supply means 2 will be described.

  In the following embodiment, oxygen-enriched air supplied from the oxygen enricher 2a is supplied into the bath water W as microbubbles made of oxygen-enriched air by the microbubble generator 3.

  In the present invention, oxygen-enriched air is supplied from the oxygen enricher 2a to the bath water W in the bathtub 1 to reduce the amount of dissolved oxygen in the bath water W in the bathtub 1 to 7 ml / L to 13 ml / L is set.

  As shown in FIG. 1, a waterproof floor pan 5 is provided at the bottom of a bathroom 6 composed of a unit bathroom, and a bathtub 1 is installed on the waterproof floor pan 5. The bathtub 1 is provided with a microbubble generator 3 that generates microbubbles by dissolving the air in the bath water W sucked from the bathtub 1 and discharging the bath water W in which the air is dissolved into the bathtub 1. is there.

  As shown in FIG. 2, the fine bubble generating device 3 mainly includes a suction port 7, a discharge port 23, a circulation pipe 8, an ejector 10, a circulation pump 11, and a dissolution tank 12. The suction port 7 is attached to the bottom of the bathtub 1 and sucks the bath water W in the bathtub 1. The discharge port 23 is attached to the bottom of the bathtub 1, and the bath water W containing fine bubbles is discharged from the discharge port 23 into the bathtub 1. The suction port 7 and the discharge port 23 communicate with each other through a circulation line 8 piped outside the bathtub 1, and a circulation pump 11 is disposed in the middle of the circulation line 8 to drive the circulation pump 11. Accordingly, the bath water W is sucked from the suction port 7 and discharged from the discharge port 23. In addition, an ejector 10 is provided in the circulation line 8 so as to be positioned between the suction port 7 and the circulation pump 11, and when the bath water W passes through the ejector 10 by driving of the circulation pump 11, air is sucked into the bath. Air is mixed into the water W. A dissolution tank 12 is disposed in the circulation line 8 between the circulation pump 11 and the discharge port 23, and the air mixed in the ejector 10 is dissolved in the bath water W. In the dissolution tank 12, air is dissolved in the bath water W by passing the bath water W through a meandering path. The discharge port 23 decompresses and discharges the bath water W in which the air is dissolved, whereby the dissolved air becomes fine bubbles, and the bath water W containing fine bubbles is discharged. You can take a bath in the shape.

  Further, an oxygen enrichment device 2a which is oxygen enriched air supply means 2 is installed on the ceiling of the bathroom 6. This oxygen enrichment apparatus 2a is mainly composed of an oxygen enrichment film and a vacuum pump. Air in the atmosphere is taken in by the vacuum pump and air is passed through an oxygen enrichment film such as a flat film of an organic polymer. As a result, air enriched with oxygen can be obtained. When passing air through the oxygen-enriched membrane, oxygen and nitrogen decelerate, but oxygen passes at a rate approximately 2.5 times that of nitrogen. As a result, the air in the normal atmosphere was 78% nitrogen and 21% oxygen, but the oxygen-enriched film turns the air 69% nitrogen and 30% oxygen, thereby obtaining oxygen-enriched air.

  The oxygen-enriched air obtained by the oxygen enricher 2a is supplied to the ejector 10 of the fine bubble generator 3 through the air supply path 4.

  A control unit 19 is provided on the ceiling of the bathroom 6. The flange 18 of the bathtub 1 is provided with an operation switch 20 for operating the fine bubble generating device 3.

  Then, when the oxygen enricher 2a is driven to drive the circulation pump 11 of the fine bubble generator 3, the bath water W in the bathtub 1 is sucked from the suction port 7 as shown in FIG. Passes through the ejector 10, oxygen-enriched air is mixed into the bath water W, and the bath water W mixed with this oxygen-enriched air is sent to the dissolution tank 12 so that the oxygen-enriched air is contained in the bath water W. The bath water W dissolved and dissolved in the oxygen-enriched air is discharged under reduced pressure from the discharge port 23, so that the bath water W containing fine bubbles having a high oxygen concentration is discharged in a milky manner.

  As described above, by supplying the oxygen-enriched air generated in the oxygen-enriching device 2a to the ejector 10 of the micro-bubble generating device 3, the micro-bubbles of the oxygen-enriched air can be generated. The diameter is desirably 200 nm to 100 μm. By the way, the graph of FIG. 9 shows the relationship between the bubble diameter of the fine bubbles and the rising speed of the bubbles. In this graph, the horizontal axis is the bubble diameter (μm) and the vertical axis is the rising speed (m / s), and it can be seen that the smaller the bubble diameter, the slower the rising speed of the bubbles. Further, the graph of FIG. 10 shows the relationship between the bubble diameter of the fine bubbles and the rising time of the bubbles. In this graph, the horizontal axis is the bubble diameter (μm) and the vertical axis is the 30 cm rise time (minutes), and the rise time is slower as the bubble diameter is smaller. For this reason, the smaller the bubble diameter, the longer the residence time in the bathtub 1, and the more oxygen in the oxygen-enriched air is dissolved in the bath water W.

  The smaller the bubble diameter of the fine bubbles, the longer the residence time in the bathtub 1 and the greater the amount of dissolved oxygen. In order to realize bubbles of 200 nm or less, an electrolyte is administered to the bath water W. It is necessary to consider inconvenience and corrosion of equipment. For this reason, the lower limit of the bubble diameter is set to 200 nm. Moreover, when the height of the position of the discharge port 23 for discharging fine bubbles into the bathtub 1 and the water surface of the bathtub 1 is 30 cm, 1 minute, which is the time required for dissolving oxygen in the bath water W, is satisfied. Requires a bubble diameter of 100 μm or less. When the bubble diameter is larger than this, the bubbles rise as they are and do not contribute to dissolution. For this reason, the upper limit of the bubble diameter is set to 100 μm. Further, when the bubble diameter is 70 μm or less, the solution stays for 2 minutes or more, so that a dissolution effect is obtained.

  FIG. 7 is a graph showing the relationship between the operation time when fine bubbles are generated and the amount of dissolved oxygen in the bath water W. In this graph, the horizontal axis represents the operation time (minutes), and the vertical axis represents the dissolved oxygen amount (ml / L). The hot water temperature in the bathtub 1 is about 40.5 ° C., the amount of hot water is 200 liters, 0.5 liter / min of air is supplied to the fine bubble generator 3 to generate fine bubbles, and oxygen is dissolved. The amount is measured. At this time, the distribution of the bubble diameters of the fine bubbles is as shown in the graph of FIG. In this graph, the horizontal axis represents the bubble diameter (μm), and the vertical axis represents the frequency (%).

  In the graph of FIG. 7, the line indicated by the symbol a indicates a case where fine bubbles of oxygen-enriched air having an oxygen concentration of 30% are formed at a room temperature of 24.4 ° C., and the line indicated by the symbol b indicates an oxygen at a room temperature of 27.0 ° C. The case where fine bubbles of oxygen-enriched air having a concentration of 30% are formed is shown. The line indicated by the symbol c is a room temperature of 24.4 ° C. and the temperature of the bath water W is 40.5 ° C., and oxygen-enriched air is supplied. It shows the amount of dissolved oxygen in the bath water W in a normal bathtub that does not generate fine bubbles. As is apparent from FIG. 7, the amount of dissolved oxygen is about 6.3 ml / L in the bath water W in a normal bath that does not supply oxygen-enriched air and does not generate fine bubbles. There is no change. In contrast, when oxygen-enriched air is supplied into the bath water W, the oxygen-enriched air is supplied into the bath water W and the amount of dissolved oxygen gradually increases as time passes. In the example shown by the line shown, it can be seen that the dissolved oxygen amount exceeds 7 ml / L in about 2 minutes and 30 seconds, and the dissolved oxygen amount exceeds 7 ml / L in about 6 minutes in the case indicated by symbol b.

  The graph in FIG. 8 is a graph showing a change in the amount of moisture in the keratin of human skin after bathing. In FIG. 8, the line indicated by symbol d formed fine bubbles of oxygen-enriched air having an oxygen concentration of 30% at room temperature of 24.4 ° C. and hot water temperature of 40.5 ° C. indicated by the symbol a in FIG. In the bath water W, the subject (adult female) becomes 10 minutes between 5 minutes and 15 minutes in FIG. 7 (that is, the amount of dissolved oxygen in the bath water W is about 7.5 ml / L to about 9.2 ml / L). 10 minutes) until the end of the bathing, the change in the amount of horny water (the number of subjects who experimented was 16 and the average amount of change). Further, the line indicated by symbol e in FIG. 8 indicates that the same 16 subjects do not supply oxygen-enriched air at room temperature 24.4 ° C. and hot water temperature 40.5 ° C. at approximately the same time on different days. The figure shows the change in the amount of water in the keratin after taking the bath for 10 minutes in normal bath water W (average change in 16 subjects). In addition, all the subjects were people with slightly dry skin, and the amount of keratin moisture before bathing was 40 μs.

  As is apparent from the graph of FIG. 8, when bathing in the normal bath water W (the dissolved oxygen amount of the bath water W is about 6.3 ml / L) represented by the line indicated by the symbol e, the amount of horny water However, it was 200 μm immediately after pouring, and after 12 pours, the skin decreased to 50 μm in about 12 minutes and became dry skin. However, oxygen-enriched air represented by the line indicated by symbol d was supplied to the bath water W. When bathing for 10 minutes until the amount of dissolved oxygen in the bath water W is about 7.5 ml / L to about 9.2 ml / L, the amount of stratum corneum decreases from 200 μm to 50 μm immediately after bathing. It turns out that the time required for the decrease in the amount of stratum corneum can be extended longer when the amount of dissolved oxygen in the bath water is larger.

  In this way, the amount of dissolved oxygen in the bath water can prolong the time required to reduce the amount of keratinous moisture, so that the skin can be kept moist after bathing, and the skin can be maintained with lotion. Can be performed with a margin, and the moisturizing effect can be enhanced to moisturize the skin and improve the makeup paste.

  As described above, when bathing in bath water having a higher dissolved oxygen amount than normal bath water, the water retention capacity of the keratin is improved and the time required for the decrease in the amount of keratin water is increased due to the following reason. It is believed that. That is, when the dissolved oxygen concentration in the bath water W in the bathtub 1 increases, the oxygen partial pressure of the bath water W becomes higher than the oxygen partial pressure of the horny skin of the human skin, and the osmotic pressure at the site in the body bath water W. Water penetration is promoted, and high concentration of dissolved oxygen acts on the natural moisturizing factor (NMF) in the stratum corneum, improving water retention capacity, and high concentration of dissolved oxygen acts on intercellular lipids in the stratum corneum. And improve the water retention capacity. For these reasons, it is considered that the time required for the decrease in the amount of moisture in the keratin after bathing can be extended.

  Here, if the amount of dissolved oxygen in the bath water W of the bathtub 1 is less than 7 ml / L, the time required for the decrease in the amount of keratin moisture is not so different from that of the ordinary bath water W, and the skin becomes damp after bathing. Since the state cannot be maintained for a long time and the skin is moist with sufficient margin, skin care cannot be performed with a lotion or the like. Moreover, when the amount of dissolved oxygen in the bath water W of the bathtub 1 exceeds 13 ml / L, a large amount of enriched oxygen is released from the bath water surface into the bathroom space, and the oxygen concentration in the bathroom space becomes higher than necessary. The burden on the body of the person taking a bath is large, which is not preferable. For this reason, in the present invention, the amount of dissolved oxygen in the bath water is 7 ml / L to 13 ml / L, preferably 7.5 ml / L to 12 ml / L.

  In setting the amount of dissolved oxygen in the bath water to 7 ml / L to 13 ml / L, in the above-described embodiment, the capacity of the oxygen-enriched air supply means 2 and the fine bubble generator 3 and the amount of hot water in the bath 1 are set. The relationship between the hot water temperature, room temperature, etc., the supply amount of oxygen-enriched air, the supply time, etc. is obtained beforehand by experiment, and based on this, the purpose of bath water W in the range of 7 ml / L to 13 ml / L The amount of supply of oxygen-enriched air into the bath water W to obtain the dissolved oxygen amount, the supply time, etc. are obtained, and thereby the operation time of the oxygen-enriched air supply means 2 and the fine bubble generator 3 is determined. The Therefore, when the dissolved oxygen amount is set to the target dissolved oxygen amount within the range of 7 ml / L to 13 ml / L, the operation time of the oxygen-enriched air supply means 2 and the fine bubble generator 3 is set based on the above. By controlling by the control part 19, the dissolved oxygen amount can be made into the target dissolved oxygen amount within the range of 7 ml / L to 13 ml / L.

  Further, the oxygen concentration of the oxygen-enriched air supplied from the oxygen-enriched air supply means 2 is set to 25% to 40%. That is, when the oxygen concentration of the oxygen-enriched air supplied from the oxygen-enriched air supply means 2 is less than 25%, the bath water W in the ordinary general bath 1 is supplied to the bath water W. This is not preferable because the target dissolved oxygen amount cannot be achieved regardless of the amount of dissolved oxygen. Moreover, when the oxygen concentration of the oxygen-enriched air supplied from the oxygen-enriched air supply means 2 exceeds 40%, the oxygen-enriched air released from the water surface into the bathroom 6 space without being completely dissolved in the bath water W. The amount increases, the oxygen concentration in the bathroom 6 space becomes higher than necessary, and the burden on the body is large, which is not preferable.

  By the way, in the said embodiment, when supplying oxygen enriched air in the bath water W of the bathtub 1, since it supplies in the bath water W as a fine bubble, the bather who is in the bathtub 1 is a fine bubble. Wrapped to provide a thermal effect, and because it is wrapped with fine bubbles of oxygen-enriched air, it can promote bather skin respiration. Thereby, the comfort level during bathing can be increased and the burden of cardiopulmonary function can be reduced. In addition, recovery from fatigue (accelerating the action of lactic acid in the muscles being decomposed by oxygen) and activation of the skin, further improving the moisture retention of the skin.

  Note that the flow rate of the oxygen-enriched air supplied from the oxygen-enriching device 2a is set to be larger than the flow rate used in the fine bubble generating device 3, so that excess oxygen-enriched air is supplied into the bathroom 6. It may be. As a result, the oxygen concentration of the air in the bathroom 6 is increased, and the lungs can be easily relieved and bathed comfortably.

  In this embodiment, in addition to supplying the oxygen-enriched air supplied from the oxygen-enriched air supply unit 2 to the bath water W in the bathtub 1, the oxygen-enriched air supplied from the oxygen-enriched air supply unit 2 A part of the chemical air may be supplied into the bathroom 6 space. In this case, the oxygen concentration of the air in the bathroom 6 increases, and it becomes possible to take a comfortable bath with ease of lung respiration.

  3 to 6 show another embodiment of the present invention. In this embodiment, in addition to the fine bubble generating device 3 for supplying oxygen-enriched air supplied from the oxygen-enriched air supply means 2 as fine bubbles into the bath water W of the bathtub 1 as described above, A jet bath device 22 is provided for entraining air into the bath water W sucked in from the air and jetting the bubble bath water W entrained with air into the bathtub 1.

  The jet bath device 22 is mainly composed of a suction port 13, a jet port 14, a circulation line 9, a jet pump 17, an air intake port 24, and an air supply line 16. A suction port 13 is attached to the side wall of the bathtub 1, and the bath water W in the bathtub 1 is sucked in. Moreover, the jet nozzle 14 is provided in the side wall of the bathtub 1, and the bath water W containing the comparatively big bubble is jetted from the jet nozzle 14. FIG. The suction port 13 and the jet port 14 are communicated with each other through a circulation line 9 piped outside the bathtub 1, and a jet pump 17 is arranged in the middle of the circulation line 9 to drive the jet pump 17. By doing so, the bath water W sucked from the suction port 14 is strongly ejected from the spout 14. The flange 18 of the bathtub 1 is provided with an air intake port 24, and the air intake port 24 and the jet port 14 are communicated with each other. The ejector port 14 is provided with an ejector, and the air taken in from the air intake port 24 is engulfed in the bath water W by ejecting the bath water W from the jet port 14, and the bath water W containing relatively large bubbles. Is supposed to spout. As shown in FIG. 3, the flange 18 of the bathtub 1 is provided with an operation switch 21 of the jet bath device 22 in addition to the operation switch 20 of the fine bubble generating device 3.

  Here, as shown in FIGS. 5 and 6, the air supply path 4 for supplying oxygen-enriched air obtained by the oxygen enricher 2a is branched into two branch paths 4a and 4b, and one branch path 4a is You may make it connect with the ejector 10 of the microbubble generator 3, and make the other branch path | route 4b connect with the air intake port 24. FIG. In this case, the amount of oxygen-enriched air obtained by the oxygen-enriching device 2a is, for example, 2 liter / min, and the oxygen-enriched air taken in by the ejector 10 of the fine bubble generating device 3 is 0.5 liter / min. Then, 1.5 liter / min of oxygen-enriched air is supplied to the air intake port 24. Accordingly, when the jet bath device 22 is not operated as shown in FIG. 5 and only the fine bubble generating device 3 is operated, oxygen-enriched air of 1.5 liter / min is supplied from the air intake port 24 into the bathroom 6 space. Then, 0.5 liter / min of oxygen-enriched air is supplied to the fine bubble generating device 3 side, and the fine bubbles are supplied into the bath water W in the bathtub 1. Further, when the jet bath device 22 is operated without operating the fine bubble generating device 3, air in the bathroom 6 space is sucked from the air intake port 24 and air of 2 liters / min is supplied to the air intake port 24 side. Thus, the jet port 14 together with the air intake port 24 is sucked into the ejector section, and the bath water W containing relatively large bubbles is ejected from the jet port 14 so that the bather can be massaged with jet water. At this time, when the air is taken in from the air intake port 24, since the oxygen-enriched air is supplied to the air intake port 24, bubbles containing the oxygen-enriched air are ejected. As a result, oxygen-enriched air drifts in the vicinity of the bather's face, so that the patient can take a comfortable bath with ease of lung respiration.

  In this case, since the bubbles are relatively large when supplied by the jet bath device 22, the residence time of the oxygen-enriched air in the bath water W in the bathtub 1 is extremely short. It is difficult to make the dissolved oxygen amount 7 ml / L to 13 ml / L. Therefore, after the operation of the jet bath device 22, the micro bubble generator 3 is operated, or after the micro bubble generator 3 is operated, the jet bath device 22 is operated, or the micro bubbles It is preferable that the amount of dissolved oxygen in the bath water W in the bathtub 1 is set to 7 ml / L to 13 ml / L by alternately operating the generator 3 and the operation of the jet bath device 22 or simultaneously.

It is a partially cutaway perspective view showing an example of an embodiment of the present invention. It is explanatory drawing explaining operation | movement of a microbubble generator same as the above. It is a partially cutaway perspective view showing an example of another embodiment of the present invention. It is a perspective view of a bathtub part same as the above. It is explanatory drawing explaining operation | movement of a microbubble generator same as the above. It is explanatory drawing explaining operation | movement of a jet bath apparatus same as the above. It is a graph which shows the relationship between the amount of dissolved oxygen and the time in the normal bath water which does not supply oxygen enriched air when oxygen enriched air is supplied in bath water. Changes in the amount of horny water after bathing when bathing in bath water with a high dissolved oxygen content by supplying oxygen-enriched air into bath water and bathing in normal bath water without supplying oxygen-enriched air It is a graph to show. It is a graph which shows the relationship between the bubble diameter of a fine bubble, and the bubble rising speed. It is a graph which shows the relationship between the bubble diameter of a fine bubble, and the bubble rising time. It is a graph which shows distribution of the bubble diameter of a fine bubble.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bath 2 Oxygen-enriched air supply means 3 Fine bubble generator

Claims (3)

  There is provided oxygen-enriched air supply means for supplying oxygen-enriched air containing oxygen at a concentration higher than the oxygen concentration in the air into the bath water in the bath, and the oxygen-enriched air in the bathtub by the oxygen-enriched air supply means A bath apparatus characterized in that the amount of dissolved oxygen in the bath water is 7 ml / L to 13 ml / L by supplying the bath water into the bath water.   2. The bathtub according to claim 1, further comprising a fine bubble generating device that receives supply of oxygen-enriched air from the oxygen-enriched air supply means and generates fine bubbles made of oxygen-enriched air in the bath water. apparatus. The bathtub apparatus according to claim 1 or 2, wherein the oxygen concentration of the oxygen-enriched air supplied from the oxygen-enriched air supply means is 25% to 40%.

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