JPH0827041B2 - Medical humidifier - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mixed gas (medical mist) in which a mist obtained by atomizing a liquid such as water or a chemical liquid is mixed with air.
The present invention relates to a medical humidifier for spraying and supplying the same to a patient .

[0002]

2. Description of the Related Art Conventionally, for example, medical treatment as shown in FIG.
Use humidifier is known.

The humidifier shown in FIG. 5 has an ultrasonic vibrator 1
A lower chamber 2 attached to the lower end of the lower chamber 2 and an upper chamber 3 detachably fitted to the upper end of the lower chamber 2 to form a chamber 4, and an air passage 5 for guiding air to be supplied to the chamber 4 is internally provided. The air passage pipe 6 formed in the
And the air passage pipe 6 connected to the chamber 4 respectively.
In the fan room 9 provided in the middle of the above, the blower fan 10 rotated by a motor is housed.

In the humidifier shown in FIG. 5, a liquid 14 such as water or a chemical solution contained in the lower chamber 2 is vibrated and atomized by the ultrasonic vibrator 1 and, at the same time, a blower fan. Air intake 8 for outside air
Through the filter 7 and the sucked air is caused to flow into the internal space 4a of the chamber 4 through the air passage 5 to mix the air with the mist of the atomized liquid 14 and the spray port of the chamber 3. I am trying to spray from 15.

[0005]

However, in the humidifier shown in FIG. 5, an oscillating unit for oscillating the ultrasonic vibrator 1 and, in some cases, a fan drive motor for rotationally driving the fan 10 are provided. However, since it is overheated especially in the summer, and the casing of the humidifier is also overheated accordingly, it is not preferable in terms of the function of the oscillation unit and the fan drive motor and the safety of the humidifier.

In order to prevent such overheating, conventionally, the chamber 4 is passed through the air passage 5 by the fan 10.
The air flow introduced into the internal space 4a of the ultrasonic transducer 1
After the air is introduced into the internal space of the humidifier body in which the oscillator unit and the fan drive motor are commonly arranged and the introduced air flow cools the oscillator unit of the ultrasonic transducer 1, the fan drive motor, etc. The air flow used for this air cooling is caused to flow into the internal space 4a of the chamber 4 through the air passage so as to be mixed with the mist of the liquid 14.

The inventor of the present invention causes the air flow used for air cooling such as the oscillation unit of the ultrasonic transducer 1 and the fan drive motor to flow into the internal space 4a of the chamber 4 to cause the liquid 1 to flow.
When mixed with the mist of No. 4, it was found that the following problems occur. That is, in the fan drive motor, since the motor shaft, which is the rotation shaft, and the bearing thereof are strongly rubbed with each other when the fan drive motor is rotationally driven, dust is easily generated in the internal space in which the motor is arranged. Further, since it is practically difficult to frequently clean the internal space of the humidifier body in which the oscillation unit of the ultrasonic transducer 1 and the fan drive motor are commonly arranged, it is difficult to clean the outside air sucked by the blower fan 10. A small amount of dust contained therein will be accumulated in the internal space in a certain amount over a long period of time. Therefore, since such dust may be mixed in the air flow passing through the internal space, the dust is mixed in the mixed gas generated by mixing the air flow with the mist of the liquid 14. Therefore, when the mixed gas is sucked into the patient as a medical mist through the mist hose and the mask, the patient sucks harmful medical mist.

The present invention has been invented to correct such a problem, and can effectively prevent the oscillation unit for vibrating the vibrator from being overheated or moistened. , Mixed gas of liquid mist and air (medical
It is an object of the present invention to provide a medical humidifier capable of effectively preventing dust and other impurities from being mixed into a mist for use .

[0009]

A medical humidifier according to the present invention for achieving the above object comprises a chamber having a vibrator for atomizing a liquid to generate a mist of the liquid, and the mist of the liquid. A blower fan for supplying mixed air to the chamber, a fan drive motor for rotating the blower fan, which is arranged in an internal space separated from the blower fan and the chamber, An oscillating unit arranged in the internal space together with the fan drive motor for vibrating the vibrator, and a first air flow for further directing an air flow blown toward the chamber by the blowing fan toward the chamber. And an air flow dividing means for dividing the air flow into the second air flow toward the inner space.
And mixed with the liquid mist in the chamber
The above-mentioned first air flow is discharged to the outside and supplied to the patient.
And the second air flow is introduced into the internal space to cool the oscillation unit at least and then is combined with the first air flow.
Instead, it is discharged to the outside from a place other than the spray port .

[0010]

EXAMPLES Next, an embodiment of a medical humidifier according to the present invention will be described with reference to FIGS.

The humidifier 21 shown in FIGS. 1 to 4 is a chamber 27 having a humidifier main body 22, an ultrasonic vibrator 23 as an example of a vibrator, lower and upper chambers 24 and 25, and a chemical liquid tank 26. An air passage 28, an air passage cover 29, a filter room 30, a filter 31, a fan room 32, a sirocco fan 33 which is an example of a blower fan, a fan drive motor 34, and an air inflow control valve. 35 and other major structures.

The lower chamber 24 has an open upper end, and is fitted and held from above in a concave chamber holding portion 37 provided on one side of the humidifier body 22. The ultrasonic transducer 23 is attached to the bottom portion 24a of the lower chamber 24.

The chemical tank 26 has an open upper end and a diaphragm 38 attached to the bottom. The chemical liquid tank 26 is inserted into the lower chamber 24 from above, and is removably placed on the upper end flange 24b of the lower chamber 24 by the packing 39 fitted on the upper and lower surfaces of the outer periphery of the upper end flange 26a. ing.

The lower end of the upper chamber 25 is open, the lower end 25a thereof is removably placed on the packing 39, and the lower end flanges 25b provided on three outer peripheral surfaces of the lower end 25a are chamber holding portions. 37 open top end 3
It is fitted to the inner circumference of 7a. A cover engaging portion 25d formed by a substantially U-shaped recess is provided on a part of the upper wall 25c of the upper chamber 25, and the bottom surface of the cover engaging portion 25d and the upper wall 25c are provided. An air inlet 40 and a spray port 41 are provided. The upper wall 25c of the upper chamber 25 has a large and small oxygen supply port 42.
a, 42b, a chemical liquid supply port 42c, etc. are provided,
These are closed with removable caps 43a, 43b, 43c. In addition, the bottom portion 24 of the lower chamber 24
The drain hose 44, one end of which is connected to the
2 of the drain hose 44 is led to the outside of
Is vertically removably locked to the hose locking portion 45 attached to the outside of the humidifier main body 22 in an upward vertical direction.

The chamber 27 is constructed as described above, and the upper chamber 25 and the chemical liquid tank 26 are removable. Then, the working water 46 is stored in the lower chamber 24, and the chemical liquid 47 is stored in the chemical liquid tank 26.

The fan room 32 is provided on the side surface 22a of the humidifier main body 22 opposite to the chamber 27, and is installed inside the humidifier main body 22 with a fan drive motor 34.
The motor shaft 34 a of the above projects into the fan room 32. The sirocco fan 33 is detachably attached to the motor shaft 34a by screws 48 in the directions of arrows a and a'in FIG.

On the upper surface 22b of the humidifier main body 22, the cover engaging portion 25d of the upper chamber 25 and the fan room 32 are provided.
A horizontal recessed groove 51 is formed to connect with the air passage cover 29, and the air passage cover 29 is detachably and horizontally fitted into the recessed groove 51 from above. The upper wall 29a of the air passage cover 29 and one side wall 29b and the partition wall 2 that are integrally provided in parallel with the lower surface of the upper wall 29a.
The horizontal columnar space surrounded by 9c and the bottom surface 51a of the concave groove 51 constitutes an air passage 28 connecting the fan room 32 and the air inlet 40 of the upper chamber 25. The air diverting port 52 provided on the bottom surface 51a of the concave groove 51 in a part of the air passage 28 is provided adjacent to the ultrasonic transducer 23 in order to vibrate the ultrasonic transducer 23. The air passage 28 is communicated with the internal space 53 of the humidifier main body 22 in which the oscillation unit (not shown), the fan drive motor 34, and the like are accommodated.

A bottom plate 75 is attached to the lower end of the humidifier main body 22, and the bottom plate 75 defines the lower limit position of the internal space 53. Further, a gap 76 is formed between the one side end 75 a of the bottom plate 75 and the humidifier body 22, and the internal space 53
Is communicated with the outside of the humidifier at the lower portion of the humidifier main body 22 through the gap 76 and the like.

The tip portion of the air passage cover 29 constitutes a chamber fixing portion 29d for pressing the upper chamber 25 from above and fixing it by engaging the cover engaging portion 25d of the upper chamber 25 from above. .

A fan cover 54 that covers the fan room 32 from the side surface is integrally provided vertically under one end of the air passage cover 29, and an air suction port 55 that introduces air into the fan room 32 is provided to the fan cover 54. Is provided. The arcuate wall 54a integrally provided on the inner surface of the fan cover 54 and the arcuate wall 32a integrally provided on the humidifier main body 22 constitute a spiral outer peripheral wall of the fan room 32.

The filter room 30 is integrally provided on the outer surface of the fan cover 54.
The filter 31 is detachably accommodated therein.

The filter cover 56 covering the filter room 30 from the side is provided with an air intake 57.
The filter cover 56 is used in the filter room 3
No. 0 is attached to a pair of hinges 58 integrally provided at the lower end of the outer peripheral wall 30a in a detachable manner, and is fixed to the outer peripheral wall 30a by a screw 59 with a knob.

A pair of fulcrum shafts 60 are integrally provided at the lower end of the fan cover 54, and the pair of fulcrum shafts 60 are integrally provided at a position near the lower end of the side surface 22a of the humidifier body 22. It is rotatably attached to the fulcrum bearing 61 in a detachable state. Therefore, the fan cover 54
The air passage cover 29 integral with the air passage cover 29 is detachable from the humidifier body 22 and can be opened and closed in the directions of arrows b and b ′ in FIG. Installed. The air passage cover 29 is a pair of rotary lock knobs 62, which are cover fixing means mounted on the upper surface 22b of the humidifier body 22.
Is fixed on the humidifier main body 22. In addition, on the upper wall 29a of the air passage cover 29,
A pair of click locking portions 63 with which the pair of lock knobs 62 are locked are integrally provided.

The air inflow control valve 35 is provided in the upper chamber 2.
5 is located directly above the air inlet 40. The air inflow control valve 35 has a male screw 65 having a knob 64 at its upper end, and is provided with an upper wall 29a of the air passage cover 29.
Is screwed into a female screw 66 provided on the. Then, by adjusting the rotation of the knob 64, the air inflow amount adjustment valve 35 can be moved and adjusted in the up-down direction, which is the perspective direction with respect to the air inlet 40. Further, a handle 67 that can be pulled out upward is attached to the humidifier main body 22.

Next, the operation of the humidifier 21 shown in FIGS. 1 to 4 will be described.

When using the humidifier 21, first, as shown in FIG.
As shown in FIG. 4, when the air passage cover 29 integrated with the fan cover 54 is rotated in the direction of arrow b in FIG.
Since the fan cover 54 can be fitted into the concave groove 51 of the humidifier main body 22 and the fan room 32 and can be closed so as to cover them, the air passage 28 is formed in the concave groove 51.
Is formed. At this time, the chamber fixing portion 29d of the air passage cover 29 is replaced with the cover engaging portion 2 of the upper chamber 25.
In the state of being engaged in the inside of 5d from above, the pair of lock knobs 62 of the humidifier body 22 are rotated in the direction of arrow c in FIG. 2 to be locked on the pair of click locking portions 63 of the air passage cover 29. .

As a result, the air passage cover 29 integrated with the fan cover 54 is pressed from above by the pair of lock knobs 64 and fixed to the humidifier main body 22, and
The chamber fixing portion 29d of the air passage cover 29 presses and fixes the upper chamber 25 from above. On this occasion,
The lower end portion 25 a of the upper chamber 25 is pressed onto the packing 39 of the chemical liquid tank 26, and the chemical liquid tank 26 is fixed on the lower chamber 24 together with the upper chamber 25.

After the above-mentioned preparation for use, the mist hose 69 is connected to the spray port 41, and a mask (not shown) at the tip of the mist hose 69 is attached to the patient. Then, in this state, the power is turned on to vibrate the ultrasonic transducer 23 and rotate the sirocco fan 33 by the fan drive motor 34.

Then, the vibration of the ultrasonic transducer 23 is propagated to the chemical liquid 47 in the chemical liquid tank 26 via the working water 46 in the lower chamber 24 and the diaphragm 38, so that the chemical liquid 47 is vibrated and atomized. As a result, mist of the chemical liquid 47 is generated in the internal space 25e of the upper chamber 25.

On the other hand, by the rotation of the sirocco fan 33,
As shown by an arrow A in FIGS. 1, 3 and 4, the outside air flows from the air intake 57 to the filter 31 in the filter room 30.
Through the air suction port 55 and is sucked into the fan room 32. Then, the sucked air is continuously blown from the fan room 32 into the air passage 28,
From the air inlet 40 to the internal space 25 of the upper chamber 25
It flows into the inside of e and is mixed there with the mist of the chemical solution 47.

The mixed gas (medical mist) in which the mist of the chemical solution 47 and the air are mixed flows out from the spray port 41 of the upper chamber 25 in the direction of the arrow B. Therefore, the mist hose 6
9 and the patient is aspirated through the mask.

At this time, the air inflow adjusting valve 35 is moved up and down to adjust the inflow of air from the air inlet 40 into the internal space 25e of the upper chamber 25. It is possible to change the mixing ratio with and the outflow amount of the mixed gas from the spray port 41.

For patients who need supplemental oxygen, an oxygen supply pipe (not shown) is attached to the upper chamber 25.
The oxygen can be supplied to the patient by connecting to either one of the oxygen supply ports 42a and 42b and supplying oxygen into the internal space 25e of the upper chamber 25. At this time, the air inlet 40 can be narrowed or blocked by the air inflow amount adjusting valve 35 as shown by the chain line in FIG. 3 as needed.

Further, as shown by an arrow C in FIGS. 1, 3 and 4, a part of the air blown by the sirocco fan 33 is partially discharged from the air distribution port 52 into the internal space 5 of the humidifier main body 22.
Since the air is sent into the inside of the ultrasonic wave oscillator 3, the oscillation unit of the ultrasonic transducer 23 and the fan drive motor 3
4 etc. are air cooled. In addition , the air used for the air cooling is applied to a portion other than the spray port 41 (that is, a gap 76 formed between the one side end 75 a of the bottom plate 75 and the humidifier main body 22).
Etc.) to the outside of the humidifier. Therefore,
This air for cooling flows out from the spray port 41 and is supplied to the patient.
This mixed gas will not be merged with the mixed gas.
Inside the body (medical mist) included in the air for air cooling
Dust and other impurities (eg, evaporated) in the space 53
There is no risk of oil) getting mixed in .

Next, when cleaning the humidifier 21 after use, after rotating the pair of lock knobs 62 in the direction of arrow c'in FIG. 1 to release the fixed state of the air passage cover 29, the fan cover 54 is released. The air passage cover 29, which is integral with, is opened by rotating the pair of fulcrum shafts 60 around the pair of fulcrum shafts 60 in the direction of the arrow b ′ in FIG. 3, or as shown in FIG. After removing from the fulcrum bearing 61, the air passage cover 29 integrated with the fan cover 54 is opened so as to be completely removed from the humidifier main body 22.

As a result, the air passage 28 is completely opened over almost its entire length, and the fan room 32 is provided.
Are completely open at their front and top surfaces. At the same time, the fixed state of the upper chamber 25 is released, and the upper chamber 25 and the chemical liquid tank 26 can be easily removed from the humidifier main body 22 above the lower chamber 24. Furthermore, by removing the screw 48 that fixes the sirocco fan 33 to the motor shaft 34a, the sirocco fan 33 can be easily removed from the fan room 32 in the direction of the arrow a '. Further, the screw 59 fixing the filter cover 56 is removed, and the filter cover 56 is centered around the pair of hinges 58, and is indicated by an arrow b'in FIG.
Direction, or the pair of hinges 5
If removed from 8, filter 3 in filter room 30
1 can also be easily removed.

As described above, the upper chamber 25, the chemical liquid tank 26, the air passage 28, the air passage cover 29, the filter room 30, the filter 31, the fan room 32, the sirocco fan 33, the fan cover 54 and the filter cover 5 are provided.
By completely disassembling 6, cleaning such as wiping, cleaning and disinfecting can be performed completely and easily.

For cleaning the inside of the lower chamber 24, the tip end 44a of the drain hose 44 is attached to the hose engaging portion 45.
From the lower chamber 24
It may be performed after the working water 46 therein is drained by the drain hose 44.

The embodiment of the present invention has been described above.
The present invention is not limited to the above embodiments, and various effective modifications can be made based on the technical idea of the present invention.

[0040]

[0041]

According to the present invention configured as described above, the second air flow separated from the first air flow mixed with the liquid mist to generate the mixed gas causes the oscillator to vibrate. Since the oscillation unit can be effectively air-cooled, there is no risk of the oscillation unit overheating even in the summer, and the internal space in which the oscillation unit of the vibrator and the fan drive motor are commonly arranged has Since a pressurized state is obtained by introducing the second air flow, the mixed gas generated by mixing the first air flow with the liquid mist does not enter the inner space through the gap or the like. ,
For this reason, the mist in the mixed gas does not cause the oscillation unit and the fan drive motor to become damp and its durability deteriorates. Therefore, in terms of the function of the oscillation unit and the fan drive motor and the safety of the humidifier, It is extremely advantageous.

Further, the first air diverted separately from the second air flow introduced to air-cool the oscillation unit in the internal space where the oscillation unit of the vibrator and the fan drive motor are commonly arranged. raw and the flow is mixed with mist liquid
When the formed mixed gas is supplied to the patient through the spray port,
A second air flow that cools the oscillator unit at least
Locations other than the above spray port without merging with the air flow of 1
It was made to be released from the outside. Therefore, it is introduced into the internal space to cool the oscillating unit at least.
Since the air flow of No. 2 does not merge with the mixed gas supplied from the spray port to the patient , this mixed gas (medical
Inside the above-mentioned inside included in the above-mentioned second air flow.
There is no risk of dust and other impurities in the space being mixed in,
Because of this , a gas mixture that is extremely hygienic to the patient
(Medical mist) can be provided .

[Brief description of drawings]

FIG. 1 is a perspective view of an entire humidifier showing an exploded part of an embodiment of a medical humidifier according to the present invention.

It is a perspective view in Figure 2 when using the entire medical humidifier shown in FIG.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a schematic cross-sectional view of a conventional medical humidifier.

[Explanation of symbols]

21 Humidifier 22 Humidifier main body 23 Ultrasonic transducer (vibrator) 27 Chamber 28 Air passage 29 Air passage cover 30 Filter room 31 Filter 32 Fan room 33 Sirocco fan (fan for blowing) 34 Fan drive motor 41 Spray port 47 Chemical liquid 52 air distribution port (air distribution means) 53 internal space 54 fan cover

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Sasaki Mura 2-2-1 Dojo, Urawa-shi, Saitama Atom Co., Ltd. Urawa Plant (72) Inventor Kazuo Matsubara 3--18-15 Hongo, Bunkyo-ku, Tokyo Atom Co., Ltd. (56) References Actual development 63-14931 (JP, U) Actual development 56-64775 (JP, U)

Claims (3)

[Claims] 1. A chamber having a vibrator for atomizing a liquid to generate a liquid mist, a blower fan for supplying air mixed with the liquid mist to the chamber, and a blower for the blower. The fan and the chamber are arranged in an internal space isolated from each other, and a fan drive motor for rotationally driving the blower fan is arranged in the internal space together with the fan drive motor.
An oscillating unit for vibrating the vibrator, a first air flow that further directs an air flow blown toward the chamber by the blower fan toward the chamber, and a second air flow that faces the internal space. air diverting means to divert the, after being mixed with the mist of the liquid in the chamber
In order to discharge the first air flow to the outside and supply it to the patient
Comprising of a spray nozzle, respectively, the second air stream, after cooling the at least the oscillation unit is introduced into the interior space, the first air stream
A medical humidifier characterized in that it is discharged to the outside from a place other than the spray port without being joined with the above . 2. A fan room in which the blower fan is arranged is provided adjacent to one side of the internal space, and the chamber is provided adjacent to the other side opposite to the one side. An air passage for guiding an air flow blown toward the chamber by the blower fan from the fan room to the chamber is provided adjacent to the internal space, and the air diversion means is the air passage. 2. The medical device according to claim 1, wherein the medical device is configured by an air diversion opening that communicates with the internal space, and the second air flow is introduced into the internal space from the air diversion opening. use a humidifier. 3. A filter room accommodating a filter is provided in front of the fan room, and when the blower fan is rotationally driven, the air passing through the filter flows into the fan room. The medical humidifier according to claim 1 or 2, which is characterized.