JP2013220280A - Breathing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a breathing device including a breathing monitoring device in which an inhalation valve and an exhaust valve are not components and having a smaller number of components compared with a conventional breathing device.SOLUTION: A breathing device includes: a face body covering a part or all of a face surface; an intake valve and an exhaust valve attached to the face body; an electric fan for supplying outside air into the face body through the intake valve; a filter for filtering the outside air sucked by the electric fan; a breathing monitoring device attached to the face body, in which the intake valve and the exhaust valve are not components; and a controller for controlling the operation of the electric fan matched with breathing on the basis of detection signals of the breathing monitoring device. The breathing monitoring device includes: a magnet attached to a vibration membrane of speaking diaphragm attached to the face body; and a Hall element attached to the face body facing the magnet.

Description

The present invention relates to a respiratory apparatus.

In the patent document 1, the applicant of the present application is a face body that covers part or all of the face, an intake valve and an exhaust valve that are attached to the face body, and an electric fan that supplies outside air to the face body via the intake valve; A filter that filters outside air sucked into the electric fan, a respiration monitor device that is attached to a face piece and does not include an intake valve or an exhaust valve, and an electric fan that matches the respiration based on a detection signal of the respiration monitor device. A breathing monitor device having a diaphragm that covers an opening formed in the face piece, a magnet attached to the diaphragm, and a Hall element attached to the face piece facing the magnet. A respirator characterized by:
In the breathing apparatus of Patent Document 1, since the breath monitoring apparatus does not include an intake valve and an exhaust valve, minute dust and water droplets contained in the intake and exhaust are difficult to adhere to the sensor, the sensor is difficult to get dirty, There is an advantage that the accuracy is hardly lowered with time.

JP 2009-136521 A

As shown in FIG. 1, an implementation product of the breathing apparatus of Patent Document 1 includes a voice transmitter 10 that radiates a voice of a breathing apparatus user attached to the front face of the face body to the external environment in addition to the above-described configuration. . As a result, the above-mentioned product includes an intake valve, an exhaust valve attached to one side of the face piece, a filter, a respiratory monitoring device attached to the other side face of the face piece, and a voice transmitter attached to the front face of the face piece. There is a problem that the number of parts is large.
The present invention has been made in view of the above problems, and includes a respiratory monitoring device that does not include an intake valve or an exhaust valve, and the number of components compared to the implementation of the respiratory device of Patent Document 1 shown in FIG. An object of the present invention is to provide a breathing apparatus with a small amount of air.

In order to solve the above problems, in the present invention, a face body that covers a part or all of the face, an intake valve and an exhaust valve attached to the face body, and external air is supplied to the face body via the intake valve. An electric fan, a filter that filters outside air sucked into the electric fan, a respiration monitor device that does not include intake and exhaust valves, and the operation of the electric fan according to the respiration based on the detection signal of the respiration monitor device A breathing monitor device having a magnet attached to a vibrating membrane of a transmitter attached to a face piece, and a Hall element attached to the face piece facing the magnet. A respiratory device is provided.
In the breathing apparatus according to the present invention, the breathing apparatus of Patent Document 1 in which the breathing monitor apparatus and the voice transmitter are separately attached to the face piece by using the diaphragm of the voice transmitter as a component of the breathing monitor apparatus. The number of parts is reduced compared to the actual product.

In a preferred aspect of the present invention, the respiratory monitor device, the voice transmitter, and the control device are integrally assembled into a unit, and the unit is detachably attached to an opening formed in the face piece.
By assembling the respiratory monitor device, the voice transmitter, and the control device into a unit, and detachably attaching the unit to the opening formed in the face body, the assembly operation of the respiratory device is facilitated.

It is a block diagram of the implementation goods of patent document 1. FIG. (A) is a sectional side view, (b) is a front view. It is a block diagram of the respiratory apparatus which concerns on the Example of this invention. (A) is a sectional side view, (b) is a front view.

A respiratory apparatus according to an embodiment of the present invention will be described.
As shown in FIG. 2, the respiratory apparatus A includes a half-faced bowl-shaped face 1 that covers the nose and mouth of the user's face, and a reed valve-type intake valve 2 that is attached to the face 1. An exhaust valve 3, an electric fan 4 that is disposed upstream of the intake valve 2 with respect to the intake air flow and supplies outside air into the face body 1 through the intake valve 2, and an upstream side of the electric fan 4 with respect to the intake air flow. A filter 5 for filtering the outside air sucked by the electric fan 4 and a voice transmitter 6 are provided.
The voice transmitter 6 has a small-diameter portion, a medium-diameter portion, and a large-diameter portion, a tubular body 6a that fits into the opening formed in the face body 1 from the small-diameter portion, and the outside of the small-diameter portion of the tubular body 6a. The cylindrical body 6a is screwed into the end projecting from the outside of the face body and sandwiches the face body 1 around the opening in cooperation with the annular step 6b between the small diameter part and the medium diameter part of the cylindrical body 6a. A ring-shaped cover 6c that fixes the rim to the face body 1, a circular vibrating membrane 6e in which the outer peripheral edge abuts on the annular step portion 6d between the medium diameter portion and the large diameter portion of the cylinder body 6a, An annular frame body 6f that fixes the vibrating membrane 6e to the cylindrical body 6a by screwing into the large diameter portion of the body 6a and sandwiching the outer peripheral edge of the vibrating membrane 6e in cooperation with the annular step portion 6d is provided. doing. A plurality of openings 6c ′ are formed in the cover 6c, and the frame body 6f has an arm portion 6f ′ that connects two points facing each other on the ring through the center of the ring.
The intake valve 2, the electric fan 4, the filter 5, and the transmitter 6 are attached to the front surface of the face body 1, and the exhaust valve 3 is attached to the side face of the face body 1.

The respiratory apparatus A includes a respiratory monitor apparatus 7. The respiratory monitor device 7 is attached to the magnet 7a attached to the center of the diaphragm 6e included in the voice transmitter 6 and to the longitudinal center of the arm 6f 'of the voice transmitter 6 with a predetermined gap therebetween. And a Hall element 7b facing the 7a.
The hall element 7b and the electric fan 4 are connected to a control device 8 disposed in the vicinity of the electric fan 4, and the control device 8 is housed in a battery housing portion 9 disposed in the vicinity of the electric fan 4. Not connected to the battery.

The operation of the breathing apparatus A will be described.
When the breathing apparatus A is not used, the internal pressure (gauge pressure) of the face piece 1 is zero, and the internal and external pressures applied to the vibrating membrane 6e are balanced. In the following description, all the internal pressures of the face piece 1 are gauge pressures. At this time, the vibration film 6e is in an initial state extending substantially in a flat plate shape, the distance between the magnet 7a and the Hall element 7b is an initial value, and the magnetic flux density of the magnet 7a detected by the Hall element 7b is also initial. It is a value.
If the internal pressure of the face piece 1 is positive, the vibrating membrane 6e bulges and deforms to the outside of the face piece 1, and if the internal pressure of the face piece 1 is negative, the vibrating membrane 6e contracts and deforms to the inside of the face piece 1.

When using the breathing apparatus A, a battery (not shown) is stored in the battery storage unit 9 and the control device 8 is operated. The face piece 1 is mounted on the user's head so as to cover a part of the user's face including the nose and mouth. The annular edge portion of the face piece 1 is brought into close contact with the face to prevent the outside air from entering the face piece 1 from the contact portion between the annular edge portion and the face.
The internal pressure of the face plate 1 increases or decreases according to the user's exhaust and intake air, a differential pressure is generated in the internal / external pressure applied to the vibrating membrane 6e, the vibrating membrane 6e is deformed from the initial state, and the magnet 7a and the Hall element 7b The distance between them changes from the initial value. The Hall element 7 b detects a change from the initial value of the magnetic flux density accompanying the change, and transmits a detection signal to the control device 8. When the amount of change from the initial value of the magnetic flux density received from the hall element 7b exceeds a predetermined value, the control device 8 recognizes that the respiratory device A is attached to the user's head and starts the electric fan 4.
Based on the detection signal of the Hall element 7b, the control device 8 adjusts the electric fan 4 so that the internal pressure of the face body 1 becomes positive, and so that the vibration film 6e is deformed to the outside of the face body 1 from the initial state. Control the number of revolutions.

During exhaust, the internal pressure of the face piece 1 increases, the amount of deformation of the vibrating membrane 6e to the outside of the face piece 1 increases, the distance between the magnet 7a and the Hall element 7b increases, and the magnetic flux density of the magnet 7a detected by the Hall element 7b increases. Decrease. When the increase amount from the initial value of the distance exceeds a predetermined value and the decrease amount from the initial value of the magnetic flux density of the magnet 7a detected by the Hall element 7b exceeds the predetermined value, the control device is in an exhaust state in the breathing state. Then, the rotational speed of the electric fan 4 is decreased or the electric fan 4 is stopped. As a result, power consumption is saved, battery consumption is suppressed, and clogging of the filter 5 is suppressed. During exhaust, the intake valve 2 is closed and the exhaust valve 3 is opened. Exhaust gas is discharged from the face piece 1 to the external environment through the exhaust valve 3.
Note that when the user of the breathing apparatus A speaks, the vibrating membrane 6e of the sound transmission device 6 vibrates. The amount of deformation of the vibrating membrane 6e in the in-plane direction due to the vibration is the vibration associated with the user's breathing. Since the amount of deformation of the membrane 6e in the in-plane direction is small, the operation of the electric fan 4 linked to breathing is not hindered.

During intake, the internal pressure of the face piece 1 is reduced, the amount of deformation of the vibrating membrane 6e to the outside of the face piece 1 is reduced, the distance between the magnet 7a and the Hall element 7b is reduced, and the magnetic flux density of the magnet 7a detected by the Hall element 7b is reduced. To increase. When the amount of increase from the initial value of the distance falls below a predetermined value, and the amount of decrease from the initial value of the magnetic flux density of the magnet 7a detected by the Hall element 7b falls below the predetermined value, the control device causes the breathing state to be in the inspiratory state. And the number of rotations of the electric fan 4 is increased. During intake, the intake valve 2 opens and the exhaust valve 3 closes. Outside air passes through the filter 5 to remove dust, and is then sucked into the electric fan 4 and flows into the face body 1 through the intake valve 2. As the rotational speed of the electric fan 4 increases, the amount of air flowing into the face body 1 increases, and the internal pressure of the face body 1 is maintained at a positive pressure, so that the breathing apparatus user can breathe easily.

The ventilation resistance of the filter 5 increases with time due to accumulation of dust. As a result, even if the electric fan 4 is operated, the internal pressure of the face body 1 during intake decreases with time. Eventually, the internal pressure of the face body 1 during intake becomes negative, the distance between the magnet 7a and the Hall element 7b becomes smaller than the initial value, and the magnetic flux density of the magnet 7a detected by the Hall element 7b is lower than the initial value. To increase. When the magnetic flux density of the magnet 7b detected by the Hall element 7c increases from the initial value, the control device 8 recognizes that the lifetime of the filter 5 has passed due to clogging, and operates an alarm device (not shown) to generate an alarm sound, An alarm light or the like is generated to notify the user of the breathing apparatus A about the replacement of the filter 5. By replacing the filter 5, the control for keeping the internal pressure of the face piece 1 at a positive pressure becomes possible again, and the function of the breathing apparatus A is restored.

When the breathing apparatus A is removed from the user's head, the internal and external pressures applied to the vibrating membrane 6e balance, the vibrating membrane 6e returns to the initial state, and the distance between the magnet 7a and the Hall element 7b is the initial value. The magnetic flux density of the magnet 7a detected by the Hall element 7b returns to the initial value. When the state in which the magnetic flux density received from the Hall element 7b has returned to the initial value continues for a predetermined time, the control device 8 recognizes that the respiratory device A has been removed from the user's head and stops the electric fan 4.

In the respiratory apparatus A, since the respiratory monitor apparatus 7 does not include the intake valve 2 and the exhaust valve 3, it is necessary to provide a hall element 7 b that constitutes a part of the respiratory monitor apparatus 7 in the intake and exhaust flow paths. Absent. Therefore, fine dust and water droplets contained in the intake / exhaust are difficult to adhere to the Hall element 7b, the Hall element 7b is not easily contaminated, and the accuracy of the respiratory monitoring device 7 is unlikely to deteriorate with time.

In the breathing apparatus A, when the user wears the breathing apparatus A and starts breathing, the electric fan 4 starts automatically, and when the breathing apparatus A is removed, the electric fan 4 automatically stops. Thus, there is no need to manually operate the ON / OFF switch of the electric fan 4 after the breathing apparatus A is mounted. As a result, usability of the exhalation device A is improved.

Since the Hall element 7b included in the respiratory apparatus A is a magnetic sensor, even if fine dust or water droplets contained in the air inside the face piece 1 are attached, the detection accuracy is unlikely to decrease. Therefore, in the respiratory apparatus A, the accuracy of the respiratory monitor 7 is unlikely to deteriorate with time.

In the respiratory apparatus A, the diaphragm 6e of the voice transmitter 6 is used as a component of the respiratory monitor apparatus 7, so that the respiratory monitor apparatus 7 and the voice transmitter 6 are separately attached to a face piece. The number of parts is reduced compared to the product of the breathing apparatus.

The voice transmitter 6, the respiratory monitor device 7, and the control device 8 may be assembled into a unit, and the unit may be detachably attached to the opening formed in the face body 1.
By assembling the voice transmitter 6, the respiratory monitor device 7 and the control device 8 as a unit, the assembling work of the respiratory device A is facilitated.

Instead of detecting the displacement of the vibration film 6e using the magnet 7a and the Hall element 7b, the displacement of the vibration film 6e is detected using a reflector and an optical sensor composed of a light emitting element and a light receiving element. Also good.
The face piece 1 may be a full face face covering the entire face of the user.

The present invention includes a face covering a part or all of a face, an intake valve and an exhaust valve attached to the face, an electric fan that supplies outside air to the face through the intake valve, and an electric fan. A filter that filters outside air, a respiratory monitor device that is attached to the face piece and does not include an intake valve or an exhaust valve, and a control device that controls the operation of the electric fan in accordance with respiration based on a detection signal of the respiratory monitor device It can be widely used for a respiratory apparatus including

A Breathing apparatus 1 Face body 2 Intake valve 3 Exhaust valve 4 Electric fan 5 Filter 6 Voice transmitter 6e Vibration membrane 7 Respiration monitor device 7a Magnet 7b Hall element 8 Control device

Claims (2)

A face body covering part or all of the face, an intake valve and an exhaust valve attached to the face body, an electric fan for supplying outside air to the face body via the intake valve, and filtering the outside air sucked into the electric fan A respirator, a respiration monitor device attached to the face piece and not including an intake valve or an exhaust valve, and a control device that controls the operation of the electric fan according to respiration based on a detection signal of the respiration monitor device, The respiration monitor device includes a magnet attached to a vibrating membrane of a voice transmitter attached to a face piece, and a hall element attached to the face piece facing the magnet. The respiration monitor according to claim 1, wherein the respiration monitor device, the voice transmitter, and the control device are integrally assembled into a unit, and the unit is detachably attached to an opening formed in the face body. apparatus.

Images