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CN-122006163-A - Full-automatic fresh air breathing auxiliary equipment and control method thereof

CN122006163ACN 122006163 ACN122006163 ACN 122006163ACN-122006163-A

Abstract

The invention discloses full-automatic fresh air breathing auxiliary equipment and a control method thereof, and belongs to the technical field of respiratory protection. The equipment comprises a head-wearing unit, a fresh air host, an air passage connecting pipe, a low pressure sensor and an MCU controller. The head-wearing unit comprises a nose cover and a fixing piece, wherein an exhaust port and a one-way stepped valve plate integrally formed by ultra-soft silica gel are arranged at the bottom of the nose cover, a fresh air host is fixed at the rear of the head and communicated with the nose cover through an air passage connecting pipe buried in the fixing piece, a low pressure sensor detects the air passage pressure in real time, the measuring range is 0.1-2 inches of water column, and an MCU controller is configured to control the fresh air host to increase output power when the starting of expiration is detected, and output positive pressure air flow assists in pushing away the exhaust valve plate. The invention realizes the complete separation of the inspiration expiration gas paths, provides pure fresh air for users through the intelligent control of expiration detection-active auxiliary discharge, has the advantages of extremely simple structure, extremely effective control and breathing extreme adaptation, and can be widely applied to the breathing assistance of daily protection, rhinitis patients and patients with slow resistance to lung.

Inventors

  • XU DERONG

Assignees

  • 徐德荣

Dates

Publication Date
20260512
Application Date
20260305
Priority Date
20260107

Claims (14)

  1. 1. Full-automatic fresh air breathing auxiliary equipment, characterized by, include: the head wearing unit comprises a nose cover, a first air inlet and a second air inlet, wherein the nose cover is used for covering the nose of a user, the bottom of the nose cover is provided with an air outlet, and the air outlet is provided with a one-way air exhaust valve plate; A fixing piece connected to the nose mask for fixing the nose mask to the head of a user; the fresh air host is used for outputting purified air, is fixed on the fixing piece and is positioned behind or beside the head of a user, and a battery is arranged in the fresh air host; The air passage connecting pipe is arranged in the fixing piece, and two ends of the air passage connecting pipe are respectively connected with an air outlet of the fresh air host and an air inlet of the nose cover; the low pressure sensor is arranged in the air passage of the fresh air host or the air passage connecting pipe and is used for detecting the pressure in the air passage in real time, and the measuring range is 0.1-2 inches of water column; The MCU controller is electrically connected with the low pressure sensor and the fresh air host and is configured to receive a pressure signal detected by the low pressure sensor; when the pressure signal is judged to be in an ascending trend relative to the basic pressure and accords with the exhalation starting characteristic, the fresh air host is controlled to increase output power so as to output positive pressure airflow into the nose cover and assist in pushing away the one-way exhaust valve plate.
  2. 2. The full-automatic fresh air breathing auxiliary equipment according to claim 1, wherein the fixing piece comprises an elastic head band, the elastic head band is annular and is used for being sleeved on the head of a user, the fresh air host is fixed at the rear part of the elastic head band, and the air passage connecting pipe is buried in the elastic head band.
  3. 3. The full-automatic fresh air breathing auxiliary equipment according to claim 2, wherein the air path connecting pipe comprises a first section of hose and a second section of hose, the first section of hose is connected with the air inlet of the nose mask, the second section of hose is connected with the air outlet of the fresh air host, the first section of hose and the second section of hose are detachably connected through a connector, and the connector is located between the elastic headband and the nose mask.
  4. 4. The full-automatic fresh air breathing assistance apparatus of claim 1 wherein the MCU controller is further configured to control the fresh air host to resume to a base output power when the pressure signal is determined to be in a downward trend and meets an inhalation initiation feature.
  5. 5. The fully automatic fresh air breathing assistance device of claim 1 wherein said exhalation initiation feature comprises a rate of pressure rise exceeding a preset threshold or an absolute value of pressure exceeding a preset base pressure increment.
  6. 6. The full-automatic fresh air breathing auxiliary equipment according to claim 1, wherein the MCU controller is further configured to adopt a dual judgment mechanism to improve the drainage assisting accuracy, wherein in a normal breathing state, the respiration rate rule and the low pressure sensor signal are combined to judge the starting of expiration, and when the respiration rate changes due to the speaking or movement of a user, the system is automatically switched to an abnormal mode, and the judgment is performed based on the low pressure sensor signal.
  7. 7. The full-automatic fresh air breathing auxiliary device according to claim 1, wherein the one-way exhaust valve plate is a stepped valve plate integrally formed by ultra-soft silica gel material, and the opening pressure of the valve plate is not higher than 2cmH 2 O.
  8. 8. The full-automatic fresh air breathing auxiliary device according to claim 1, wherein the bottom of the nose mask is provided with a plurality of exhaust ports, the number of the exhaust ports is 4-8, and each exhaust port is provided with the one-way exhaust valve plate.
  9. 9. The full-automatic fresh air breathing auxiliary device according to claim 1, wherein the nose mask comprises an inner layer and an outer layer, a flexible layer attached to the face of the human body is arranged at the edge of the inner layer, and the flexible layer is made of medical silica gel.
  10. 10. The full-automatic fresh air breathing auxiliary equipment according to claim 1, wherein a buckle for being clamped in the nostril of a user is arranged at the bottom of the nose cover, and the buckle is made of elastic plastic coated with medical silica gel.
  11. 11. The full-automatic fresh air breathing auxiliary equipment according to claim 1, wherein a filter layer is arranged in the fresh air host, and the filter layer has a filtration efficiency of not less than 99.97% on particles in air.
  12. 12. A control method of a full-automatic fresh air breathing assistance device, applied to the device of any one of claims 1to 11, comprising: detecting the pressure in the air channel in real time; When the detected pressure is in an ascending trend relative to the basic pressure and accords with the initial exhalation characteristic, the fresh air host is controlled to increase output power, and positive pressure air flow is output into the nose cover so as to assist in pushing away a one-way exhaust valve plate arranged at the bottom of the nose cover.
  13. 13. The method of claim 12, wherein the fresh air host is controlled to return to the base output power when the detected pressure is decreasing and the inhalation initiation characteristic is met.
  14. 14. The control method according to claim 12, wherein the improving of the drainage assisting accuracy by using the dual judgment mechanism comprises: under the normal breathing state, judging the expiration start by combining the breathing frequency rule and the low pressure sensor signal; when the respiratory frequency changes due to the speaking or movement of the user, the device is automatically switched to an abnormal mode, and the judgment is performed based on the signals of the low pressure sensor.

Description

Full-automatic fresh air breathing auxiliary equipment and control method thereof Technical Field The invention relates to the technical field of respiratory protection, in particular to full-automatic fresh air respiratory auxiliary equipment and a control method thereof. Background With the rise of environmental problems and health consciousness, the requirements of people on the quality of respiratory air are getting higher. Existing fresh air equipment is mainly divided into two types: The first type is a stationary type fresh air machine, such as a home fresh air machine, which filters outside air and introduces it into the room. The equipment has the defects that the actual breathing of a user is the mixed gas of the outdoor air, the indoor air and the exhaust gas exhaled by other people, the blocking rate of germs and dust is only about 20% -60%, the real individual protection cannot be realized, and the mobile travel requirement cannot be met. The second type is a movable fresh air mask, which combines a miniature fresh air fan with the mask and can be worn with a person. The equipment has the defects that the air inlet and the air outlet are mixed in the same cavity, the mixed gas of fresh air and self-exhaled waste gas is inhaled by a user, CO 2 retention can be caused after long-time wearing, uncomfortable symptoms such as dizziness, chest distress and the like are caused, and the actual blocking rate of germ dust is only about 60% -70%. In addition, the existing fresh air mask is generally connected by a long hose through an externally hung host, so that the user is inconvenient to move after wearing the fresh air mask, daily life and work are affected, and the user acceptance is limited. More importantly, the two types of equipment adopt a passive exhaust mode, namely, the exhaust valve is pushed open by the exhalation of the user completely depending on the self force of the user, the respiratory resistance is high, the exhaust gas is not discharged cleanly, and the equipment is especially not suitable for people with weak respiratory functions such as rhinitis patients, slow-resistance lung patients and the like. Disclosure of Invention The invention aims to provide full-automatic fresh air breathing auxiliary equipment and a control method thereof, which are used for solving the following problems in the prior art: 1. The inhaled gas is mixed with the exhaled waste gas, so that pure fresh air cannot be provided; 2. The exhaust depends on passive exhalation, the respiratory resistance is high, and the exhaust is not clean; 3. The wearing mode is heavy, and affects daily life and work; 4. The different requirements of different people (healthy people, rhinitis patients and chronic obstructive pulmonary disease patients) cannot be met. In order to achieve the above purpose, the present invention provides the following technical solutions: a full-automatic fresh air breathing assistance device, comprising: A head unit, comprising: The nose cover is used for covering the nose of a user, the bottom of the nose cover is provided with an exhaust port, and the exhaust port is provided with a one-way exhaust valve plate; A fixing piece connected to the nose mask for fixing the nose mask to the head of a user; the fresh air host is used for outputting purified air, is fixed on the fixing piece and is positioned behind or beside the head of a user, and a battery is arranged in the fresh air host; The air passage connecting pipe is arranged in the fixing piece, and two ends of the air passage connecting pipe are respectively connected with an air outlet of the fresh air host and an air inlet of the nose cover; the low pressure sensor is arranged in the air passage of the fresh air host or the air passage connecting pipe and is used for detecting the pressure in the air passage in real time, and the measuring range is 0.1-2 inches of water column; The MCU controller is electrically connected with the low-pressure sensor and the fresh air host and is configured to: receiving a pressure signal detected by the low pressure sensor; when the pressure signal is judged to be in an ascending trend relative to the basic pressure and accords with the exhalation starting characteristic, the fresh air host is controlled to increase output power so as to output positive pressure airflow into the nose cover and assist in pushing away the one-way exhaust valve plate. Further, the fixing piece comprises an elastic head band, the elastic head band is annular and is used for being sleeved on the head of a user, the fresh air host is fixed to the rear portion of the elastic head band, and the air passage connecting pipe is buried in the elastic head band. Further, the air path connecting pipe comprises a first section of hose and a second section of hose, the first section of hose is connected with the air inlet of the nose cover, the second section of hose is connected with the air outlet of the fresh air host, the first s