JP4242639B2 - humidifier - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a humidifier, and more particularly to a technique suitably used for a medical oxygen concentrator.
[0002]
[Prior art]
2. Description of the Related Art Oxygen concentrators using an adsorption method that generates oxygen by using as an adsorbent a zeolite that allows oxygen in the air to permeate and selectively adsorb nitrogen have been put into practical use for medical purposes.
[0003]
According to this oxygen concentrator, the air taken in from the air intake port is compressed by a compressor to generate compressed air, the compressed air whose temperature has risen by the compressor is cooled by heat exchange, and the outside air is blown into the heat exchanger. The product is cooled with a cooling fan, and oxygen is generated by alternately supplying compressed air to a pair of adsorption cylinders with built-in zeolite. The generated oxygen is stored in a product tank, and a pressure reducing valve or flow rate setting device The pressure and flow rate of oxygen supplied from the product tank is automatically controlled, and it is configured so that comfortable oxygen can be supplied to the patient via a conduit such as a nasal cannula by humidifying oxygen with a humidifier. ing. For this reason, if an oxygen concentrator is installed in a place equipped with a commercial power supply, for example, a patient who is at home due to reduced lung function can safely absorb oxygen even while sleeping.
[0004]
On the other hand, the oxygen supplied from the oxygen concentrator is very dry, so if it is sucked from the nose through a nasal cannula in the dry state, it will cause a dry state in the nasal cavity, which is painful for the user. Will give.
[0005]
Therefore, before sending wet oxygen to breathing means such as nasal cannula, oxygen is sent into the water stored in the container, bubbles are generated, and the oxygen is made wet by moisture generated as the bubbles break down. Is sent to the patient. Thus, since the water stored in the container is consumed over time, it needs to be replenished.
[0006]
This replenishment work is premised on patients who use oxygen concentrators, but since patients are often elderly people and the frequency of replenishment is high, anyone can replenish as much as possible. It needs to be easy.
[0007]
Therefore, in order to simplify the connection work of the humidifier to the oxygen concentrator, a device configured to be easily performed by a horizontal operation after combining the container storing water and the lid member of the container. It has been proposed (Patent Document 1).
[0008]
Further, in order to perform the above-described insertion operation (connection operation), after the container storing water and the lid member of the container are combined, a locking member pivotally supported above the lid member is provided. There has been proposed an apparatus configured to be operated and locked to a locked portion fixed to the apparatus side (Patent Document 2).
[0009]
Furthermore, after connecting the container storing the water and the lid member of the container, the connection work to the oxygen concentrator of the humidifier is guided in the horizontal direction, and the knob provided on the apparatus side is operated, An apparatus configured to maintain a connection state to the apparatus has been proposed (Patent Document 3).
[0010]
[Patent Document 1]
Patent No. 2857005.
[0011]
[Patent Document 2]
Japanese Patent Application Laid-Open No. 11-398.
[0012]
[Patent Document 3]
Patent No. 2773100.
[0013]
[Problems to be solved by the invention]
However, according to each device proposed in the above-mentioned patent documents 1 and 2, in order to maintain the locked state with respect to the locked portion provided on the device side after combining the container storing water and the lid member. The locking means protrudes to the front side of the apparatus. For this reason, when a patient stumbles, there exists a possibility of carrying out an unexpected injury by striking a locking means violently. Furthermore, since the humidifier is set at a low position, there is a problem that an unreasonable posture such as bending down is forced when moving horizontally in order to perform the connection operation as described above.
[0014]
Further, according to the apparatus proposed in Patent Document 3, a united product of a container storing water and a lid member at a portion away from an outlet pipe for sending out oxygen and an inlet pipe for sending out wet oxygen to the breathing means. Is kept stationary. For this reason, the reliability of maintaining the inserted state is poor.
[0015]
Therefore, the present invention has been made in view of the above problems, can ensure safety in use, can perform mounting (connection) work without an unreasonable posture, and is in an inserted state The purpose is to provide a highly reliable humidifier.
[0016]
[Means for Solving the Problems]
In order to solve the above-mentioned problems and achieve the object, according to the present invention, an outlet pipe for sending out oxygen supplied in a dry state from an oxygen concentrator equipped with oxygen generating means, and breathing out oxygen in a wet state A humidifier that is removably attached to an inlet pipe that is fed to the means and that allows water to be supplied to a container that stores water, and is formed at each of the upper part of the outlet pipe and the inlet pipe. A lid formed with a locked portion, an inlet channel communicating with the outlet pipe, an outlet channel communicating with the inlet pipe, and a fitting means for fitting the container in a detachable and airtight state A member, an operation surface that is pivotally supported by the shaft support portion of the lid member, covers an almost entire area of the upper surface of the lid member, and a locking portion that locks the locked portion. And a biasing member that biases the locking portion toward the locked portion, It is characterized in that it comprises. In addition, an outlet pipe for sending oxygen supplied in a dry state from an oxygen concentrator equipped with oxygen generating means and an inlet pipe for sending wet oxygen to the breathing means are detachably attached to the water. A humidifier capable of replenishing water to the container for storing the outlet pipe, a locked portion formed at each upper portion of the outlet pipe and the inlet pipe, an inlet flow path communicating with the outlet pipe, A lid member formed with an outlet channel communicating with the inlet pipe, a fitting means for fitting the container in a detachable and airtight manner, and pivotally supported by a pivotal support portion of the lid member In addition, a rotating member formed with an operation surface that covers substantially the entire upper surface of the lid member, a locking portion that locks to the locked portion, and the locking portion faces the locked portion. A biasing member that biases the water in a container, and oxygen is sent out into the water stored in the container to generate bubbles. It is characterized by and a bubble generating means communicating with the inlet channel to the wet state. Further, according to the present invention, the outlet pipe for sending out oxygen supplied in a dry state from the oxygen concentrator equipped with the oxygen generating means and the inlet pipe for sending wet oxygen to the breathing means are detachable. A humidifier that is inserted into the container and that allows water to be replenished to an upper level of a container for storing water, the locking means maintaining the locked state with respect to the outlet pipe and the inlet pipe, and the outlet pipe A lid member having an inlet channel communicating with the outlet channel, an outlet channel communicating with the inlet pipe, and a fitting means for fitting the container in a detachable and airtight state, and stored in the container Oxygen is sent into the water to generate bubbles and to be in the wet state, and is communicated with the inlet channel, and is arranged near the bottom so that its longitudinal direction is substantially parallel to the bottom of the container. And a foam generating means provided. . Further, according to the present invention, the outlet pipe for sending out oxygen supplied in a dry state from the oxygen concentrator equipped with the oxygen generating means and the inlet pipe for sending wet oxygen to the breathing means are detachable. A humidifier that is inserted into the container and that allows water to be replenished to an upper level of a container for storing water, the locking means maintaining the locked state with respect to the outlet pipe and the inlet pipe, and the outlet pipe A lid member having an inlet channel communicating with the outlet channel, an outlet channel communicating with the inlet pipe, and a fitting means for fitting the container in a detachable and airtight state, and stored in the container From the upper level, a foam generating means that communicates with the inlet channel so as to send oxygen into water and generate bubbles to make the wet state, a main body that covers the entire inlet part of the outlet channel, and An opening that opens in a substantially horizontal direction at a high position, and the opening It is characterized by and a baffle plate having a small-diameter hole portion which is arranged to face the inlet portion communicates with the.
[0017]
In addition, the fitting means includes a lip seal provided on a joint surface between the lid member and the container so as to be deformed into an airtight state after the fitting, and a cylindrical interior extending from an edge of the lid member. Plural or preferably three or more one engaging portions formed on the peripheral surface, plural or preferably three or more other engaging portions formed on the cylindrical outer peripheral surface of the container, and the cylindrical outer peripheral surface And a flange portion that is gripped simultaneously with the operation surface.
[0018]
In addition, the oxygen concentrator has the outlet pipe and the inlet pipe disposed at a height that is easy to operate, and opens greatly above the operation surface of the lid member after insertion. A cover member having a space portion formed in the left-right direction of the flange portion of the container is provided.
[0019]
The lid member is formed by integrally resin-molding the inlet passage, the outlet passage, the fitting means, the shaft support portion, and the housing portion of the biasing member using a predetermined resin material, Further, the container is characterized in that it is injection-molded from a transparent or light-transmitting resin material and provided with a display unit for upper and lower levels of water. Further, the bubble generating means is characterized by further comprising an adjusting means for adjusting the amount of oxygen delivered to the space above the upper level. Further, the bubble generating means has a substantially disk shape.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings.
[0021]
First, FIG. 1 is an external perspective view showing the oxygen concentrator 1 according to an embodiment from the front and showing the patient K together with substantially the same scale. As can be seen from the figure, this oxygen concentrator 1 (hereinafter also referred to as “device 1”) has a rectangular parallelepiped shape (width 350 mm × depth 355 mm × height 675 mm) in order to minimize the installation location. It has a total weight of 35 kgf and is reduced in size and weight. As its design features, the color of the flat front decorative panel 3 that covers the front surface from the floor surface and the thermoplastic resin cover 2 having a three-dimensional ergonomic shape are different. By setting the color, consideration is given to harmonize with other furniture such as furniture when the apparatus 1 is installed indoors.
[0022]
Specifically, the cover 2 has a beige or cream color, while the front decorative panel 3 has a blue color, so that a so-called two-tone modern design is achieved. Furthermore, various considerations have been made to make the device compact while reducing noise, and details will be described later.
[0023]
The front decorative panel 3 of the apparatus 1 is made of wood that also functions as a sound insulation function, and can select a favorite color according to the request of the patient K in addition to the blue system. More specifically, this wood is preferably MDF (Medium Density Fiberboard), which is easy to process and does not easily cause dimensional deviation. It is known that the soundproofing performance is excellent.
[0024]
On the left and right side surfaces of the device 1, the same wooden left side decorative panel 4 and right side decorative panel 5 as the front decorative panel 3 use upper and lower four decorative screws 88, so that the case described later can be used. It is detachably fixed from the left and right direction. Handles 15 used for movement of the device 1 are fixed to substantially the central portions of the left side decorative panel 4 and the right side decorative panel 5, and are fixed to the four corners of the bottom surface of the device 1. The operator can move or lift the apparatus 1 by gripping these handles 15 when moving on the floor using the casters 6 or when transporting to install the apparatus 1. Yes. For this reason, the strength of each handle 15 is sufficiently strong to withstand the force of lifting the device 1.
[0025]
A nose cannula hook 14 for hooking the tube 6 connected to the nose cannula 13 is fixed above the front side of the left side decorative panel 4. The nose cannula hook 14 can be in a state of being hooked as shown in the drawing and in a storage state that is flush with the surface of the decorative panel 4. It can install so that the handle 15 may contact | abut. The tube 6 connected to the nasal cannula 13 has a total length corresponding to the range of movement in one room where the patient K lives, and is connected to the oxygen outlet pipe 10 provided in the apparatus 1 at the end. A coupler 11 that is detachably provided is provided. And when not in use, after the tube 12 is wound several times, the nose cannula 13 is hooked on the nose cannula hook 14 as shown in the figure.
[0026]
The cover 2 has a curved surface that is rounded from the ceiling surface to the front decorative panel 3, and as shown in the figure, the cover 2 is approximately at the waist where the patient K with standard height (160 to 170 cm) is lowered and both hands are lowered. In the vicinity of the corresponding height H, a concave portion 2d for providing the humidifier 20 is further continuously formed substantially at the center. By forming the concave portion 2d in the center in this way, the patient K can perform in a standing posture when performing the water replenishment operation of the humidifier 20 that is frequently performed. There is no need to sit down and look into each other. For this reason, the burden on the abdomen of the patient K is greatly reduced. Further, even for a left-handed person, since the humidifier 20 is detachable in the central recess 2d, it can be replaced without any sense of incongruity. Become.
[0027]
On this humidifier 20, the light quantity sensor 17 which is Cds which detects the light quantity in a room | chamber interior is arrange | positioned. On the Cds sensor 17, an operation indicator 16 having a plurality of light emitting LEDs for individually emitting light / lighting in red or green and informing the patient K of the operation state together with a voice guide is white light on the surface. It arrange | positions so that it may protect with the permeable resin plate. The Cds sensor 17 described above functions as a sensor that automatically adjusts the light quantity of the flow rate display unit 8 including a 7-segment LED arranged on the right side of the operation indicator and the humidifier 20 according to the light intensity in the room. When the room is bright, the brightness of the flow rate display unit 8 is increased, and when the room is dark at night, for example, when the room is dark, the brightness of the flow rate display unit 8 is automatically decreased so as not to disturb bedtime. Yes.
[0028]
The flow rate display part 8 is provided in the back | inner side of the recessed part 2c of the cover 2 formed in the right side of the humidifier 20 like illustration. A protective cover 9 that is detachably attached to the cover 2 is provided below the flow rate display unit 8, and a flow rate setting dial, which will be described later, is protected by the protective cover 9.
[0029]
A concave portion 2a of the cover 2 is formed on the left side of the humidifier 20, and a power switch 7 that is pressed is provided in the concave portion 2a. Below the power switch 7, an oxygen outlet pipe 10 having an attaching / detaching function to which the coupler 11 is connected is disposed. The oxygen outlet pipe 10 is also fixed to the back of a mortar-shaped recess 2b formed in the cover 2 in the same manner as the power switch 7, and is provided so as to surround the periphery.
[0030]
As described above, the humidifier 20 is detachably provided in the central portion of the curved surface on the front side of the cover 2 of the apparatus 1, and the power switch 7 and the oxygen outlet pipe 10 are formed in the recesses 2 a and 2 b formed in the cover 2. So as to be substantially flush with the cover 2 and disposed on the left side of the humidifier 20, and the flow rate display 8 is also located on the right side of the humidifier 20 so as to be in the back of the recess 2c. The operability is improved by providing. Also, for example, even if the patient K stumbles violently against the cover 2, it is safe so as not to be injured by moderately absorbing the shock with the curved surface on the front side of the cover 2 having a resin-made shock absorbing function. The above considerations have been made.
[0031]
Next, FIG. 2A is a left side view showing a state in which the apparatus 1 is installed on the floor surface F near the wall surface W of the room, and FIG. 2B is a rear view of the apparatus 1. In FIG. 2, components that have already been described are denoted by the same reference numerals and description thereof is omitted.
[0032]
First, in FIG. 2 (a), the apparatus 1 is installed with a gap G separating a back surface from a wall surface W of the room. Before installing in this way, the power cord 19 is unfastened from the pair of cord hooks 18 fixed to the back panel 25 of the apparatus 1 shown in FIG. To. Below this back panel 25, there is provided an exhaust port 26 provided in a wooden casing, which will be described later. Via this exhaust port 26, exhaust toward the lowest position of the narrow gap G is directed in the direction of the arrow. This makes it possible to exhaust from the place where the exhaust noise is lowest.
[0033]
A breaker switch 24 is provided above the back panel 25 to enable coping in the event of an excess current. Referring to FIG. 2 (a) again, the upper surface of the cover 2 forms an inclined surface behind the wall W at a predetermined angle, for example, an angle of about 45 degrees, as shown. A filter replacement lid 21 is detachably provided on the surface. In this way, by providing the filter replacement lid 21 on the inclined surface, it is possible to introduce outside air in the direction of the arrow so that the intake sound does not reach the front side of the device 1, and the reduction of the intake sound is considered. In addition, the replacement work is facilitated.
[0034]
The filter replacement lid 21 incorporates a filter (air intake filter) that the patient K or family regularly cleans / replaces. As shown in the figure, a flat portion is continuously formed on the cover 2 from the inclined surface to the back side, and an inspection lid 22 shown by a broken line is detachably provided on the flat portion.
[0035]
The inspection lid 22 is used when an inspector or the like performs an inspection operation of the display unit mounted on the inspection substrate 23 fixed on the control substrate 51 shown by a broken line disposed inside the cover 2. And it is for removing at the time of replacement | exchange of the inhalation | air-intake filter and bacteria filter which are mentioned later, and the device which cannot be opened to the patient K is made so that it may mention later. On the other hand, a first sound insulation box 54 and a second sound insulation box 55 shown by a one-dot chain line, and a stabilized power supply 52 shown by a broken line are built in the positions shown.
[0036]
With the above configuration, the opening portion with respect to the outside of the apparatus 1 includes only the opening provided in the filter replacement lid 21 and the exhaust port 26 at the rear of the bottom of the apparatus 1, and the opening area is the raw material air described later As a minimum necessary to ensure the flow rate of the air, the internal sound is prevented from leaking outside the apparatus.
[0037]
Next, FIG. 3A is an external perspective view showing the flow rate display unit 8 and the protective cover 9 shown in FIG. 1 in an enlarged manner, and FIG. 3B shows a state where the protective cover 9 is removed. FIG. In the figure, as described above, the flow rate display unit 8 is arranged on the right side of the humidifier 20 and includes a 4-digit 7-segment LED as shown in the figure. The oxygen flow rate per minute is set while looking at the flow rate display unit 8.
[0038]
Since this flow rate setting is basically not changed once set, the flow rate setting dial 27 provided below to change the flow rate is made of a plastic made of the same color as the cover 2 having the shape shown in the figure. A protective cover 9 is provided. A knob portion 9a is integrally formed on the upper portion of the protective cover 9, and is removed by inserting a fingertip into this portion. For this purpose, in FIG. 3B, locking claws 9 b and 9 b that are locked to locking grooves 2 k and 2 k formed in the cover 2 are integrally formed on the back side of the protective cover 9.
[0039]
The flow rate setting dial 27 increases the flow rate by rotating a knob as shown in the clockwise direction, and the set flow rate display is displayed on the flow rate display unit 8. Further, by pressing the display unit 28 at the upper left, the usage time of the device 1 per patient is temporarily displayed. When the protective cover 9 is set to the original state after setting the desired flow rate, the protective cover 9 is formed to be flush with the cover 2.
[0040]
4A is a plan view of the apparatus 1, and FIG. 4B is a plan view showing a state in which the inspection lid 22 is opened. In this figure, the same reference numerals are given to the components that have already been described, and the description is omitted. Nine openings 21 b are formed in the filter replacement lid 21. Moreover, it forms so that it can remove easily by raising upwards by putting a fingertip in the recessed part 2h currently formed in the cover 2 side. For this reason, it is extremely easy to remove and attach the filter (air intake filter) 33 (see FIG. 5) that the patient K needs to clean (replace if necessary) every day, and the maintainability is improved.
[0041]
On the other hand, the inspection lid 22 is set in the inspection window 2 g formed in the cover 2 so that the surface thereof is flush with the surface of the flat portion of the cover 2. By opening the inspection lid 22, as shown in FIG. 4B, inspection work is performed using the rotary switch 23a mounted on the inspection board 23 and the display unit 23b mounted on the side. Can be done. The replacement of the intake filter 30 and the bacteria filter 32 and the adjustment of the pressure regulator 31 are performed in the same manner. Although this inspection lid 22 cannot be opened to the patient K, the configuration will be described with reference to FIG.
[0042]
FIG. 5 is an external perspective view showing how the filter replacement lid 21 and the inspection lid 22 are removed. FIGS. 5A and 5B show how the filter replacement lid 21 is removed. (C) and (d) show how the inspection lid 22 is removed, respectively.
[0043]
First, in FIG. 5A, the patient K puts a fingertip into the recess 2h formed in the cover 2 in order to remove the filter replacement lid 21. Thereafter, the filter replacement lid 21 is tilted forward while the fingertip is inserted, and is removed from the opening 2 k of the cover 2. Next, as shown in FIG. 5B, the filter replacement lid 21 is turned upside down so that the filter 33 can be removed from the filter replacement lid 21 and washed with water or replaced with a new one. Then, the filter replacement cover 21 is set. In order to do this, the filter replacement lid 21 is integrally formed with a storage portion for setting the filter 33 and four locking claws 21 a as shown in the figure. The opening 2k can be set in a locked state.
[0044]
On the other hand, in FIGS. 5C and 5D, the inspection lid body 22 is integrally molded with locking portions 22a and 22a provided in a shape that can be elastically deformed. These locking portions 22a and 22a are operated so as to be pressed in the direction of the arrow when the inspection lid 22 is removed from the inspection window 2g formed in the cover 2. Since there is no clue only by this operation, the inspection lid 22 cannot be lifted upward and is not taken up from the cover 2.
[0045]
Therefore, the suction pad 35 shown in FIG. 5C is sucked to the inspection lid 22 in advance. Thereafter, as shown in FIG. 5D, the suction pad 35 is grasped and the inspection lid 22 is lifted upward to be removed from the inspection window 2g, whereby the state shown in FIG. 4B can be obtained.
[0046]
That is, in the cross-sectional views (a) to (c) of FIG. 6, which is a cross-sectional view taken along the line XX of FIG. 5 (c), the inspection lid 22 is formed on the inspection window 2 g of the cover 2. It has an external dimension to be placed on the step portion. Further, the locking portion 22a is integrally formed in a U-shape that can be elastically deformed as shown in the figure, and a convex portion 22b that locks against the groove 2m formed in the inspection window 2g of the cover 2 is formed. It is integrally formed. For this purpose, as shown in FIG. 6B, after pressing the locking portion 22a with the fingertip in the direction of the arrow, the locking portion 22a is elastically deformed to remove the convex portion 22b from the groove 2m, As shown in FIG. 6 (c), the inspection lid 22 can be removed upward by grasping the suction pad 34 previously sucked and lifting it upward. The patient K is not informed that the inspection lid 22 can be removed by using the suction pad 35 in this manner. For this reason, although it is easy to operate for a service person or the like, the structure is such that the patient K cannot be opened carelessly, thereby improving safety.
[0047]
As described above, the humidifier 20 and the filter 33, which are maintained by the patient K or those around him, are arranged on the upper portion of the cover 2 of the apparatus 1 in a straight line at the optimum height H, so that the patient K It is possible to work without bending, and care is taken so that the patient K can pay attention to the limited range of the apparatus 1. For this reason, it has an extremely ergonomic configuration. Furthermore, the set flow rate dial 27 for changing the oxygen flow rate is provided with a protective cover 9 and is almost flush with the cover 2 so that trouble after setting can be prevented and inadvertent contact is prevented. This reduces the risk of accidentally changing the flow rate.
[0048]
Even for patient K whose fixed prescription flow rate is fixed and whose set flow rate is not changed, it is not necessary to check every operation by providing a protective cover 9, and not only patient K but also an attendant It is possible to reduce the burden. Further, the operation indicators 16 necessary for confirming the driving situation are arranged in a substantially straight line on the upper part of the cover 2 of the device 1 like the humidifier 20 so that the patient K is limited to the device 1. It is only necessary to check the parts that have been changed. In addition, the inspection operator is required by simply removing the inspection lid 22 from the inspection window 2g without moving the apparatus 1 after the apparatus 1 is set in the installation state shown in FIG. Thus, it is possible to perform various maintenance work, exchange various periodic replacement parts including the filter, and grasp the operation status of the apparatus 1. Furthermore, since the apparatus 1 is provided with the minimum necessary opening, foreign matter does not enter carelessly.
[0049]
The operation indicator 16 generally informs the patient K that the apparatus 1 is in a normal state or an abnormal state together with a voice guide, but is simultaneously mounted on the inspection board 23 shown in FIG. By using the rotary switches 23a and 23b, the output of the abnormal part 23b is monitored so that the performance of the device 1 can be judged as soon as possible when a simple measuring instrument cannot be used in an emergency. Therefore, when an abnormality occurs in the apparatus 1, the worker who has received the communication can take appropriate measures without bringing the measuring instrument into the patient's home.
[0050]
Next, FIG. 7 is a piping diagram that also serves as a block diagram of the apparatus 1. In this figure, a thick solid line indicates a flow path of air, oxygen, and nitrogen gas, and is shown as a pipe 36. A thin solid line indicates power supply or electric signal wiring.
[0051]
First, the raw material air that has passed through the filter 33 built in the filter replacement lid 21 and is sucked into the apparatus flows into the pipe 36 via the intake filter 30 and is filtered. Dust and dust are removed. Thereafter, the filtered raw air is silenced by the intake silencer 37 and travels to the compressor 38 via the pipe 36. In the compressor 38, the raw material air after filtration is introduced from the intake port and compressed in the two compression chambers to generate compressed air, which is sent to the heat exchanger 40 piped downstream. This heat exchanger 40 is for cooling the compressed air whose temperature has risen in the compressor 38. The surface of the heat exchanger 40 is increased by making a metal pipe (for example, an aluminum pipe) excellent in heat dissipation effect into a coil shape, and in the apparatus. The metal pipe is cooled by receiving the air from a pair of cooling fans 39 and 39 for directly blowing the external air introduced from the outside.
[0052]
By sending the compressed air sufficiently cooled by the heat exchanger 40 to the two-way switching valve 41 that alternately supplies the first adsorption cylinder 43 and the second adsorption cylinder 44 that are piped downstream. The zeolite stored in the first adsorption cylinder 43 and the second adsorption cylinder 44 can sufficiently function as a catalyst carrier for adsorption of nitrogen and generation of oxygen. The two-way switching valve 41 is further provided with an exhaust silencer 42 for reducing exhaust noise caused by nitrogen and moisture released from the first adsorption cylinder 43 and the second adsorption cylinder 44.
[0053]
Zeolite stored in the first adsorption cylinder 43 and the second adsorption cylinder 44 is made of SiO as a catalyst carrier. ₂ / Al ₂ O _Three X-type zeolite having a ratio of 2.0 to 3.0, and this Al ₂ O _Three The amount of nitrogen adsorbed per unit weight is increased by using at least 88% or more of the tetrahedral units bound to lithium cations.
[0054]
By using such a zeolite, it becomes possible to reduce the amount of raw material air required to produce the same oxygen. As a result, the compressor 38 for generating compressed air can be of a small type, and noise can be reduced. Here, conventionally used zeolite may be used, and even in this case, sufficient noise reduction can be achieved by the muffling function described later.
[0055]
On the other hand, a pressure sensor 29 for detecting pressure is provided on the outlet side of the first adsorption cylinder 43 and the second adsorption cylinder 44 so that the control described later can be performed. A first check valve 46a is connected to the outlet side of the first adsorption cylinder 43, and a second check valve 46b is connected to the outlet side of the second adsorption cylinder 44 as shown in the figure. A pipe 36 is formed on the downstream side of the valve so as to join, and a product tank 47 for storing oxygen generated downstream is provided. Furthermore, an equal pressure valve 45 is provided between the first adsorption cylinder 43 and the outlet side of the second adsorption cylinder 44 so as to perform secondary purification.
[0056]
A pressure regulator 31 that automatically adjusts the pressure of oxygen is piped downstream of the product tank 47. A bacteria filter 32 for sterilizing bacteria is provided downstream of the pressure regulator 31, and oxygen after sterilization is sent to the flow rate setting dial 27. As shown in the figure, the pipe 36 is branched in the middle, and oxygen is sent to the oxygen concentration sensor 48 to detect the oxygen concentration so that the set oxygen concentration can be confirmed.
[0057]
The oxygen produced by the zeolite built in the adsorption cylinder has a humidity of almost zero, so if the patient inhales as it is, it will cause thirst. Therefore, a humidifier 20 that stores purified water is provided downstream, and humidity is given to oxygen in the process of passing the purified water as fine bubbles. A flow rate sensor 50 including a humidity sensor is connected to the downstream side of the humidifier 20 so that it is always monitored that a set flow rate of oxygen is supplied to the oxygen outlet pipe 10. ing. A coupler 11 is connected to the oxygen outlet pipe 10, and a nasal cannula 13 is connected via a tube 12.
[0058]
On the other hand, each of the sensors, the two-way switching valve 41 and the equal pressure valve 45 are connected to the control board 51, and switching control is performed. The control board 51 is connected to the above-described inspection board 23, is also supplied with power from the stabilized power supply 52, and is connected to a secondary power supply 34 such as a rechargeable battery that is automatically switched during a power failure.
[0059]
FIG. 8 is a diagram illustrating an operation explanation flowchart in the block diagram of the apparatus 1 of FIG. 7 together with various noise generation timings. In this figure, when the power switch of the apparatus 1 is pressed, supply of a predetermined voltage is started, and a self-check program (step S1) is performed on the control board 51. Subsequently, in step S2, the compressor 38, the cooling fans 39 and 39, and the two-way switching valve 41 are energized, so that external air is introduced and an accompanying air introduction sound is continuously generated. At the same time, noise is continuously generated with respect to the vibration and noise of the compressor 38 and the pipe transmission sound reaching the adsorption cylinder.
[0060]
Subsequently, the introduced air flows through the two-way switching valve 41 to the first adsorption cylinder 43, the check valve 46a, and the product tank 47, and the pressure gradually increases. In step S3, when the pressure sensor 29 detects a predetermined pressure, the equal pressure valve 45 is opened for a predetermined time. In this step S3, a part of oxygen concentrated in the first adsorption cylinder 43 is used to prepare the second adsorption cylinder 44 for cleaning and the next pressurization. Further, when the equal pressure valve 45 is operated, an operation sound is accompanied. In the next step S <b> 4, the two-way switching valve 41 is operated to perform the desorption process (discharge of nitrogen and moisture) of the first adsorption cylinder 43 and the intake of air into the second adsorption cylinder 44. In this step S4, the switching operation sound of the two-way switching valve 41 and the emission sound of the nitrogen gas remaining in the first adsorption cylinder 43 discharged through the two-way switching valve 41 into the atmosphere from the exhaust silencer 42 are generated. . This exhaust noise is temporary but loudest. The air that has flowed into the second adsorption cylinder 44 flows into the check valve 46b and the product tank 47, and when the attached pressure sensor 29 detects a predetermined pressure, the equal pressure valve is opened for a predetermined time in the same manner as in the previous step. . In step S5, as in step S3, the second adsorption cylinder 43 is prepared for cleaning and the next pressurization, and it goes without saying that an operating noise is generated when the equal pressure valve 45 is operated. In the next step S <b> 6, the two-way switching valve 41 is operated to perform the desorption process (discharge of nitrogen and moisture) of the first adsorption cylinder 44 and intake of air into the first adsorption cylinder 43. In this step S6, the switching operation sound of the two-way switching valve 41 is released as in step S4, and the release of the nitrogen gas remaining in the second adsorption cylinder 44 released into the atmosphere from the exhaust silencer 42 through the two-way switching valve 41. Sound is generated. Naturally, this exhaust sound generates an emission sound equivalent to that in step S4. The concentrated oxygen gas is generated by repeating the steps S3 to S6. Subsequently, the supply of oxygen is started. Since the oxygen supplied in this way is very dry, if it is sucked from the nose through the nasal cannula 13 in the dry state, the dry state in the nasal cavity is obtained. Will cause pain to the user.
[0061]
Therefore, before sending out wet oxygen to the nasal cannula 13, oxygen is sent out into the water stored in the container 101 to generate bubbles, and the oxygen is put into the nose after the moisture is generated by the destruction of the bubbles. Send to cannula 13. Since the water stored in the container 101 in this manner is consumed over time, it needs to be replenished. Hereinafter, a configuration for performing this replenishment operation will be described with reference to FIGS.
[0062]
FIG. 9A is an external perspective view showing how the humidifier 20 is removed from the apparatus 1. FIG. 9B shows a state where the container 101 is removed from the lid member 100 of the humidifier 20 after being removed, and FIG. 9C shows a state where water is replenished from the water container to the upper level 101a of the container 101. FIG. 9D is an external perspective view showing a state in which the container 101 is fitted to the lid member 100 together with a partially enlarged view.
[0063]
First, in FIG. 9A, the humidifier 20 presses the operation surface of the rotating member 102 provided on the lid member 100 in the direction of the arrow d1 to release the insertion state with respect to the device 1, and the direction of the arrow d2 It is equipped with an insertion mechanism that can be easily removed by moving to the near side.
[0064]
With respect to an example of the insertion mechanism, refer to FIGS. 10A and 10B which are cross-sectional views taken along the line X-X in FIG. 9A and FIG. 10C which is a plan view. In other words, the inflow pipe 106 and the outflow pipe 107 connected to the pipe 36 described in FIG. 7 are parallel to each other after being inserted into a hole formed in the wall surface facing the front of the recess 2d of the cover 2. So that it is fixed. At least the upper part or the entire circumference of each of the inflow pipe 106 and the outflow pipe 107 has groove-shaped locked portions 106a and 107a having a predetermined depth (indentation), for example, about 3 mm, in the longitudinal direction of each pipe. Machined and formed by milling or the like so as to be orthogonal. Further, as described later, the concave portion 2d of the cover 2 opens greatly to the upper and left and right of the operation surface of the lid member 100 after insertion, and space portions respectively in the left and right directions of the flange portion 101f of the container 101 after insertion. This improves the operability (detachability) and visibility of the patient K.
[0065]
On the other hand, the rotating member 102 has an operation surface 102a that covers substantially the entire upper surface of the lid member 100, and a depth and a width dimension that maintain the locked state by entering the locked portions 106a and 107a. The locking portion 108 is formed at the end portion, and shafts 103 and 103 are formed on the left and right side surfaces. The rotating member 102 is snapped into the shaft support portions 104, 104 provided on the lid member 100 and assembled by press fitting, or the shaft body 103 is prepared as a separate member and inserted to be freely rotatable. To be provided. The rotating member 102 is injection-molded from a resin material having a color different from that of the lid member 100, thereby clarifying the operation portion. Moreover, the operability of the visually impaired patient is improved by providing the character display “push” and / or the Braille meaning “push”.
[0066]
In FIG. 10B, a cylindrical portion 100d is formed at the approximate center of the lid member 100. The cylindrical portion 100d includes a compression spring 105 serving as a biasing member that generates a rotational force for the locking portion 108 of the rotating member 102 to move to the locked portions 106a and 107a of the inflow pipe 106 and the outflow pipe 107. Is built-in. With the above configuration, the rotating member 102 is urged to move clockwise around the shaft body 103. To release this biased state, as shown in FIG. 10A, the wide operation surface 102a of the rotating member 102 is pressed with the fingertip in the direction of the white arrow as shown in FIG. Thus, the locking portion 108 can be released from the locked portions 106a and 107a of the respective tubes.
[0067]
Further, in FIG. 10C, in order to pivotably support the rotating member 102 as described above, the lid member 100 has a predetermined shape surrounding the shaft body 103 of the rotating member 102, for example, The U-shaped wall portion 100k is integrally molded with resin.
[0068]
Again referring to FIG. 9 (a), since the insertion mechanism of the humidifier 20 is configured as described above, the patient K places the index finger on the operation surface 102a from the upright state, and the thumb, middle finger, Then, after sandwiching the container 101, the operation surface 102a can be pushed downward to be easily removed. In addition, a left-handed person can operate without any sense of incongruity.
[0069]
As described above, a structure that can be directly locked to the inflow pipe and the outflow pipe can secure the fitting state, so that it can be locked to the locked portion fixed to the apparatus side as in the past. In comparison with the structure to perform, the humidifier which was remarkably excellent in insertion reliability can be provided. Furthermore, while the patient or the like can perform the insertion operation (connection operation) without taking an unreasonable posture, the humidifier 20 is surrounded by the concave portion 2d of the cover 2, so that the patient may get stuck. Even when a light accident occurs, the resin cover 2 that can absorb the shock can absorb the shock, which is safe.
[0070]
Next, the configuration of the humidifier 20 will be described in more detail with reference to FIG. 11 which is a cross-sectional view taken along line XX in FIG. 10C and FIG. 14 which is an external perspective view. In both figures, components that have already been described will be given the same reference numerals and description thereof will be omitted, and unexplained portions will be described.
[0071]
First, in FIG. 11, the rotating member 102 is provided with integrally formed shaft bodies 103, 103, and press-fitted into shaft support portions (hole portions) 104, 104 formed in the wall portions 100k, 100k, It is assembled so as to prevent it from coming off by inserting and inserting.
[0072]
On the other hand, with reference to FIG. 14 further, a cylindrical portion 100t serving as a grip portion is formed from the edge of the lid member 100, and three or more locations (for example, three locations) are formed on the annular inner peripheral surface 100j. Are separated from each other at equal intervals in the circumferential direction). A mark portion 100m is formed or displayed in a predetermined shape (for example, a convex shape) at a predetermined position in a part of the cylindrical portion 100t.
[0073]
A container 101 that is injection-molded using a transparent resin material such as acrylic resin has a cylindrical bucket shape with a predetermined internal volume (for example, about 160 cc), and a flange portion 101f is integrally formed on the outer peripheral surface. In addition, a plurality of three or more locations (for example, three locations spaced apart at equal intervals in the circumferential direction) are integrally formed so that the other engagement portion 101g corresponds to the engagement portion 100g. A mark portion 101m is formed or displayed on the flange portion 101f. The container 101 is made of an impact-resistant thermoplastic resin, such as an acrylic resin, so it will not crack even if it is dropped carelessly, but it can be seen that bubbles are generated by making it almost completely transparent as described above. However, it is not limited to this configuration as long as it is a container that passes through the upper level 101a and the lower level 101b and the water level can be seen from the outside.
[0074]
A lip seal 116 made of silicon rubber having the cross-sectional shape shown in FIG. 11 is fixed to the groove portion on the lid member 100, and a flat joint surface at the edge of the container 101 so as to face the lip seal 116. 101k is integrally formed or molded.
[0075]
9B, the lid member 100 is slightly rotated in the direction of the arrow d3 and the container 101 is slightly rotated simultaneously in the direction of the arrow d3 as shown in FIG. Since the engagement state between them is released, it can be moved and separated in the direction of arrow d4.
[0076]
9 (c), after replenishing water up to the upper level 101a, the lid member 100 is moved in the direction of arrow d5 and the container 101 is moved in the direction of arrow d5 at the same time as shown in FIG. 9 (d). By rotating a maximum of 120 degrees, which is an angle, it is possible to establish an engagement state between the three engagement portions 101g and 100g. By providing the engagement portion 101g with the specially raised portion 101n and the engagement portion 100g with the recess portion 100n, the respective mark portions 100m and 101m are matched so that the fitting state is correctly performed with a click sound and a click feeling. I can confirm. Further, in this fitted state, the lip seal 116 comes into contact with the joint surface 101k of the container 101 and is appropriately elastically deformed, so that the liquid-tight / air-tight state can be maintained.
[0077]
In FIG. 11, the right-handed person puts the index finger F1 on the operation surface 102a, positions the thumb F2 and the middle finger F3 below the flange portion 101f of the container 101, and then sandwiches the container 101, and then operates the operation surface. It can be easily removed by moving forward while holding at three locations by pressing 102a downward. On the other hand, a left-handed person can easily remove it by placing the forefinger F1 on the operation surface 102a and moving the thumb F3 and the middle finger F2 below the flange portion 101f of the container 101 and moving the same forward. it can.
[0078]
According to the humidifier configured as described above, in the conventional structure that seals when the male screw provided on the container and the female screw provided on the lid member are screwed together, there is an individual difference in force during operation. If it is tightly tightened, it will become hard to remove and difficult to remove, and if it is tightened loosely, the conventional problem of incomplete sealing and leakage of concentrated oxygen gas has been completely solved. .
[0079]
Further, in the state shown in FIG. 9 (d), a click feeling is obtained (detailed later based on FIG. 15), and at the same time, the positioning marks provided on the outer periphery of the lid member and the container match. The lip seal can lighten the load of the tightening load, and the humidifier that is gentle for the elderly can be realized together with the device 1. .
[0080]
Next, in FIG. 12, which is a cross-sectional view taken along the line XX in FIG. 11, the lid member 100 is further integrally formed or formed with an inlet channel 109 that communicates with the inflow pipe 106 after insertion. 14, a foam generating member (foam generating means) 114 is connected to the end 109a of the inlet channel 109 as shown in the figure.
[0081]
Further, in FIG. 13, which is a cross-sectional view taken along the line YY in FIG. 11, a baffle plate 115 that is a baffle member is connected to and fixed to the end portion 110 a of the outlet channel 110. As described above, the O-ring 117 is provided to make the airtight state after the inflow pipe 106 and the outflow pipe 107 are inserted.
[0082]
First, referring to FIG. 11, FIG. 12, and FIG. 14, in the fitted state, the center axis is the distance T from the bottom surface 101p of the container 101, and the cap material is made of a porous material as a cap-like cylinder almost horizontally to the bottom surface 101p. A foam generating member 114 to be formed is provided. The foam generating member 114 is manufactured into a shape as illustrated by molding a thermoplastic resin material such as polypropylene into an open cell state. Thus, by providing the bubble generating member 114 at a predetermined position where the distance T from the bottom surface 101p of the container 101 is as low as possible (for example, about 20 mm, or preferably about 10 mm), the water level W is lowered to W1 shown in the figure. Even in this case, water can be used effectively, and a predetermined humidifying ability can be maintained.
[0083]
That is, conventionally, since the foam generating member is provided so that the longitudinal direction thereof is vertical, if the water level W decreases as the water is consumed, the humidifying ability is hindered. For this reason, it has been troublesome to replenish water at an early stage, but by providing it horizontally with respect to the bottom surface, water can be used to a considerably lower level. Reference numeral 1114 denotes another embodiment of the bubble generating member, which is provided in a substantially disc shape or plate shape at the lower end of the cylindrical member 111. The foam generating member 1114 may be entirely made of a porous material, or may be a material provided with small holes (hole diameter of about 50 to 200 μm) communicating with the cylindrical member 111. Further, the outer edge may be open or closed.
[0084]
In order to provide the bubble generating member 114 as described above, the end 109a of the inlet channel 109 is a hollow that is press-fitted into a hole formed in a lateral direction below the cylindrical member 111 having a closed bottom surface. The relay members 113 are connected as shown in the figure. Further, since the foam generating member 114 can be easily press-fitted into the relay member 113, the patient K can be easily replaced.
[0085]
Above the cylindrical member 111, an adjustment ring 112 for adjusting the amount for sending oxygen to a site above the water level W is rotatably provided. In order to make adjustment possible in this way, the cylindrical member 111 is formed with large and small holes 111a, and the holes 112a of the adjustment ring 112 so as to close and open the holes 111a. Is drilled. By adjusting the adjustment ring 112 configured as described above, it is possible to adjust the mixing ratio of the unhumidified concentrated oxygen gas and the humidified concentrated oxygen gas.
[0086]
Next, in FIGS. 11, 13, and 14, the baffle plate 115 fixed to the end portion 110 a exits together with oxygen gas when the humidifying medium (water) in the container 101 is stored until it reaches an upper level. It is provided to suppress discharge to the outflow pipe 107 via the flow path 110.
[0087]
Since the water can be effectively used by providing the component having the gas-liquid separation function in this way, the baffle plate 115 is substantially horizontal in the position higher than the upper level W and the main body 115a covering the entire end 110a. Injection using a predetermined resin material so as to have an opening 115c that opens to a large number of holes and a plurality of small-diameter holes 115b that communicate with the opening 115c and are opposed to the end 110a of the outlet channel 110 Molded.
[0088]
With the above configuration, in FIG. 11, when the humidifying medium (water) put in the container 101 is added more than a predetermined amount above the upper level W, the end 110 a of the outlet channel 110 of the humidifier and the water surface approach each other. From the state, when bubbles are ruptured by bubbling with oxygen gas to form water droplets, the water droplets are separated from each other by hitting the main body 115a of the calendar baffle plate 115, and the opening 115c and the hole 115b Therefore, water can be collected in the container.
[0089]
FIG. 15 is a detailed explanatory diagram of the click feeling described in FIG. FIG. 15A is a horizontal sectional view in the state of FIG. 9D, and FIG. 15A 'is a vertical sectional view. FIG. 15B and FIG. 15B ′ are enlarged views of each. 15 (b) and 15 (b ′), it can be seen that the concave portion 100p of the engaging portion 100g and the convex portion 101p of the engaging portion 101g are engaged. FIG. 15 (c) and FIG. 15 (c ′) show a state immediately after disengagement / a state immediately before becoming engaged. Thus, the recesses 100p and the engagement portions 101g of the engagement portion 100g are provided by the guide portions (guides) 101q provided at a predetermined angle (about 30 degrees) downward from the state immediately before the engagement is performed. A click feeling is obtained by being guided so that the convex portion 101p is engaged and being engaged.
[0090]
The humidifier 20 used in the medical device 1 of the present invention has been described based on the illustrated embodiment. However, the present invention is not limited to this, and for example, connected to an oxygen cylinder. Also good. Moreover, it is not always necessary to provide a foam generating member.
[0091]
Needless to say, the design of the cover is not limited to the above-described configuration, and the rotating member provided on the lid member after the outlet pipe and the inlet pipe are disposed at an easily operable height and the humidifier is inserted. Any cover can be used as long as the cover has a large opening toward the upper side of the operation surface and space portions are formed in the left and right directions of the flange portion of the container after insertion.
[0092]
【The invention's effect】
As described above, according to the present invention, it is possible to provide a humidifier that can ensure safety in use, can perform connection work without an unreasonable posture, and is excellent in reliability in the inserted state. Can provide. The liquid tightness of the container can be easily confirmed by the click feeling.
[Brief description of the drawings]
FIG. 1 is an external perspective view showing an oxygen concentrating device 1 according to an embodiment of the present invention from a front side and showing a patient K together with substantially the same scale.
2A is a left side view showing a state in which the apparatus 1 is installed on a floor surface F near the wall surface W of the room, and FIG. 2B is a rear view of the apparatus 1;
3A is an external perspective view showing an enlarged view of the flow rate display unit 8 and the protective cover 9 shown in FIG. 1, and FIG. 3B shows a state in which the protective cover 9 is removed. It is an external perspective view.
4 (a) is a plan view of the apparatus 1, and FIG. 4 (b) is a plan view showing a state in which an inspection lid 22 is opened.
FIGS. 5A and 5B are external perspective views showing how the filter replacement lid body 21 and the inspection lid body 22 are removed. FIGS. 5A and 5B are views of the filter replacement lid body 21 being removed. (C) And (d) is a figure which shows the mode of the removal of the inspection cover body 22, respectively.
FIGS. 6A to 6C are cross-sectional views taken along line XX in FIG.
FIG. 7 is a piping diagram that also serves as a block diagram of the apparatus 1;
FIG. 8 is a flowchart for explaining operations in the block diagram of the apparatus 1 in FIG. 7;
9A is an external perspective view showing a state in which the humidifier 20 is removed from the apparatus 1, FIG. 9B is a state in which the container 101 is removed from the lid member 100 of the humidifier 20 after being removed; (D) is an external perspective view showing a state in which water is replenished from the water container to the upper level 101a of the container 101, and a state in which the container 101 is fitted to the lid member 100 together with a partially enlarged view.
10A and 10B are cross-sectional views taken along the line XX of FIG. 9A, and FIG. 10C is a plan view of the humidifier 20;
FIG. 11 is a cross-sectional view taken along line XX in FIG.
12 is a cross-sectional view taken along line XX in FIG.
13 is a cross-sectional view taken along line YY in FIG.
FIG. 14 is a three-dimensional exploded view of the humidifier.
FIG. 15 is a diagram showing an engaged state between the lid member of the humidifier and the container.
[Explanation of symbols]
1 Oxygen concentrator
2 Cover
10 Oxygen outlet pipe
11 Coupler
12 tubes
13 Nose cannula
20 Humidifier
21 Filter replacement lid
22 Inspection lid
25 Back panel
36 Piping
37 Silencer for intake
38 Compressor
39 Cooling fan
40 heat exchanger
41 Two-way selector valve
42 Silencer for exhaust
43 First adsorption cylinder
44 Second adsorption cylinder
45 Equal pressure valve
46a, 46b Check valve
47 Product tank
100 Lid member
101 containers
102 Rotating member
103 shaft
104 Shaft support
105 Compression spring (biasing member)
106 Inflow pipe
106a Locked part
107 Outflow pipe
107a Locked part
108 Locking part
109 Inlet channel
110 Outlet channel
112 Adjustment ring
114 Foam generating member
115 Baffle Board
116 Lip seal

Claims (5)

An outlet pipe for sending oxygen supplied in a dry state from the oxygen generating means; an inlet pipe for sending wet oxygen to the breathing means ; and a groove-shaped covering formed in each upper part of the outlet pipe and the inlet pipe. A humidifier that is detachably attached to an oxygen concentrator equipped with a locking portion, and that enables replenishment of water to a container for storing water,
A lid member formed with an inlet channel communicating with the outlet pipe, an outlet channel communicating with the inlet pipe, and a fitting means for fitting the container in a detachable and airtight state; A rotary member that is pivotally supported by a pivotal support portion and that includes an operation surface that covers substantially the entire upper surface of the lid member, and a locking portion that is locked to the locked portion; A humidifier comprising: a compression spring that biases the locking portion toward the locked portion. An outlet pipe for sending oxygen supplied in a dry state from the oxygen generating means; an inlet pipe for sending wet oxygen to the breathing means ; and a groove-shaped covering formed in each upper part of the outlet pipe and the inlet pipe. A humidifier that is detachably attached to an oxygen concentrator equipped with a locking portion, and that enables replenishment of water to a container for storing water,
A groove-shaped locked portion formed in each of the outlet pipe and the upper part of the inlet pipe, an inlet flow path communicating with the outlet pipe, an outlet flow path communicating with the inlet pipe, and the container being attached and detached A lid member that is fitted in a freely and airtight manner, and an operation surface that is pivotally supported by a pivotal support portion of the lid member and covers substantially the entire upper surface of the lid member; A rotating member formed with a locking portion that locks the locked portion, a compression spring that biases the locking portion toward the locked portion, and stored in the container. And a bubble generating means that communicates with the inlet channel to generate bubbles in the wet state by sending oxygen into the water.   The fitting means includes a lip seal provided on a joint surface between the lid member and the container so as to be transformed into an airtight state after fitting, and a cylindrical inner peripheral surface extending from an edge of the lid member One of the three engaging portions formed on the outer peripheral surface of the container, the other three or more engaging portions formed on the outer peripheral surface of the cylinder, and the outer peripheral surface of the cylinder are formed and gripped simultaneously with the operation surface. The humidifier according to claim 1, further comprising a flange portion.   In the oxygen concentrator, the outlet pipe and the inlet pipe are arranged at an easy-to-operate height, and are greatly opened above the operation surface of the lid member after insertion, and after the insertion The humidifier according to claim 3, wherein cover members each having a space portion formed in the left-right direction of the flange portion of the container are provided. The lid member is formed by integrally resin-molding the inlet channel, the outlet channel, the fitting means, the shaft support portion, and the compression spring accommodating portion using a predetermined resin material, The humidifier according to any one of claims 1 to 4, wherein the container is injection-molded from a transparent or light-transmitting resin material and is provided with a display unit for upper and lower levels of water.

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