CN105455814A - Breathing device capable of detecting airflow pressure difference - Google Patents

Abstract

The invention discloses a breathing device capable of detecting airflow pressure difference, which is assembled with a breathing tube and comprises: the host comprises a first shell with a communication component and a first air flow channel penetrating through the first shell; the pressure sensor is arranged in the host machine and is connected with the communicating component; the connecting device is detachably connected between the host and the breathing tube and comprises a second airflow channel, a filtering device and an airflow guide part, wherein the second airflow channel is communicated with the first airflow channel; wherein the pressure sensor detects the pressure of the unfiltered air flow through the communication member and the air flow guide. By adopting the breathing device, the corresponding operation is performed according to the airflow generated when the user breathes.

Description

Breathing device that detects differential airflow pressure

technical field

The present invention relates to a breathing device, especially a breathing device that can directly detect the pressure of the airflow that has not been filtered by the filtering device.

Background technique

Continuous positive airway pressure therapy (Continuous Positive Airway Pressure, hereinafter referred to as CPAP) breathing device has been widely used in medical equipment. Breathe easily without obstruction.

The CPAP breathing device is assembled with the user's mask through the breathing tube, and a pressure sensor is installed in the CPAP breathing device. The pressure sensor is used to detect the breathing state of the user, that is, to detect the user's breathing into the CPAP breathing device through the breathing tube. The pressure of the airflow generated during breathing, and the CPAP breathing device provides the correct and continuous pressure for the user to breathe according to the detection results of the pressure sensor. In addition, since the user may produce droplets that directly contact the CPAP breathing device through the breathing tube when breathing, a filter device will be installed in the airflow transmission channel between the CPAP breathing device and the breathing tube to block the droplets produced by the user when breathing. The droplets enter the CPAP breathing device through the breathing tube, so that the CPAP breathing device can be prevented from being polluted by droplets, so that the CPAP breathing device can be reused.

However, since the filter device is arranged in the airflow transmission channel between the CPAP breathing device and the breathing tube, the pressure of the airflow detected by the pressure sensor in the CPAP breathing device is actually the airflow generated by the user breathing through the filter device The pressure after filtration, however, the pressure when the airflow does not pass through the filter device side is actually different from the pressure when the airflow passes through the filter device due to the barrier of the filter device, so the detection result of the pressure sensor is actually affected by the filtration of the filter device. It cannot directly and accurately reflect the pressure of the airflow generated when the user breathes, so the CPAP device will not be able to accurately control the pressure supplied to the user.

In addition, in addition to the pressure detector, some CPAP devices also have a flow resistor and a flow detector. The flow resistor is used to let the airflow flow through, so that the airflow generates a pressure difference between the inlet and outlet of the flow resistor, and the flow rate is detected. The device is used to detect the pressure when the airflow does not pass through the air inlet of the flow resistor and the pressure of the airflow after passing through the air outlet of the flow resistor to calculate the difference between the two pressures, and then calculate the flow rate of the airflow. However, setting the flow resistor will This additionally results in increased production costs for the CPAP device.

Contents of the invention

A brief overview of the invention is given below in order to provide a basic understanding of some aspects of the invention. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to identify key or critical parts of the invention nor to delineate the scope of the invention. Its purpose is merely to present some concepts in a simplified form as a prelude to the more detailed description that is discussed later.

The main purpose of the present invention is to provide a breathing device that can detect the pressure of unfiltered airflow, which is assembled with a breathing tube. One end of the communication part is connected with the pressure sensor in the host to communicate with each other, the other end of the communication part is connected to the end of the airflow guide part and communicates with each other, and the other end of the airflow guide receives the The airflow that is not filtered by the filter device, so the pressure sensor can directly detect the pressure of the airflow generated when the user is not filtered by the filter device through the connecting part and the airflow guide part, solving the problem that the pressure sensor of the known breathing device cannot directly The absence of pressure generated when the user breathes is detected.

Another object of the present invention is to provide a breathing device capable of detecting airflow pressure difference at both ends of the filter device, which is assembled with a breathing tube. The breathing device includes a host and a connecting device, wherein the host has a first communication part and a second communication components, and the connection device has a first airflow guide part and a second airflow guide part, one end of the first communication part and one end of the second communication part are respectively connected with the flow sensor in the main engine and communicate with the flow sensor with each other, the first The other end of the communication part and the other end of the second communication part are respectively connected with the end of the first air flow guiding part and the end of the second air flow guiding part, and connected with the first air flow guiding part and the second air flow guiding part respectively. The parts communicate with each other, the other end of the first airflow guiding part receives the airflow from the breathing tube and is not filtered by the filter device, and the other end of the second airflow guiding part receives the airflow from the breathing tube and is filtered by the filter device After the airflow, the flow sensor passes through the first communication part, the second communication part, the first airflow guide part and the second airflow guide part to respectively detect the pressure of the airflow not filtered by the filter device and the pressure of the airflow filtered by the filter device The pressure of the airflow, to calculate the flow rate of the airflow through the pressure difference between the two, to solve the problem that the conventional breathing apparatus needs to be additionally equipped with a flow resistor to generate the pressure difference of the airflow through the flow resistor, resulting in the lack of increased cost of the known breathing apparatus .

In order to achieve the above object, a preferred embodiment of the present invention is a breathing device, which can be combined with a breathing tube. The breathing device includes: a host, including a first air flow channel and a first housing, wherein the first housing has a The communication part, the communication part runs through the first casing; the pressure sensor is arranged in the host and connected to the communication part; and the connection device is detachably assembled between the host and the breathing tube, and includes a second airflow channel, The filter device and the airflow guiding part, wherein the second airflow channel communicates with the first airflow channel, the filter device is arranged in the second airflow channel to filter the airflow from the breathing tube, and the end of the airflow guiding part is connected to the host When it is assembled with the connecting device, it communicates with the connecting part, and the other end of the airflow guiding part receives the unfiltered airflow; wherein, the airflow flows into the host through the second airflow channel, the filter device and the first airflow channel, and the pressure The sensor detects the pressure of the unfiltered airflow through the communication part and the airflow guiding part.

Further, the filter device divides the second airflow channel into an air inlet area between the filter device and the breathing tube and an air outlet area between the filter device and the main machine, and the air flow passes through the The air inlet area and the filtering device flow out from the air outlet area.

Further, the first housing has an inner side wall and an outer side wall oppositely disposed, and the inner side wall and the outer side wall are communicated through the communicating component.

Further, the communicating part also includes a hollow channel, a first hollow penetrating part and a second hollow penetrating part communicating with each other, the hollow channel runs through the first casing and is arranged on the inner wall and the outer side between the walls, and connected between the first hollow piercing portion and the second hollow piercing portion, the first hollow piercing portion protrudes on the inner side wall, and the second hollow piercing portion protrudes on the on the outer wall.

Further, the airflow guiding part is arranged in a second housing of the connecting device, and the end of the airflow guiding part has an air outlet hole, and the other end of the airflow guiding part has an air inlet A hole, the air outlet hole is provided on an outer wall surface of the second casing corresponding to the second hollow penetrating part, when the connecting device is assembled with the main machine, the second hollow penetrating part penetrates The air outlet hole is connected with the air outlet hole, and the air inlet hole is connected with the air inlet area.

Further, the connection device also has a second setting portion, which is formed by extending toward the outside of the second housing from the part of the second housing adjacent to the wind inlet area, and covers part of the second airflow A channel for the breathing tube to be sheathed.

Further, the first casing also has a first setting portion, which is formed by extending the outer wall toward the outside of the host, and covers part of the first airflow channel.

Further, the connection device also includes a receiving part, which is adjacent to the air outlet area corresponding to the first setting part, and is formed by the indentation of the second casing part of the connection device, and is connected to the first setting part. The air outlet areas of the two airflow passages are connected, and when the connecting device is combined with the host, the first setting part is accommodated and engaged in the receiving part.

Further, the hollow passage part is disposed in the first installation portion formed by the outer wall and passes through the first installation portion, and the second hollow penetrating portion is arranged on a surface of the first installation portion.

Further, the main engine also includes a conduction tube, one port of the conduction tube is sleeved on the first hollow penetrating part and communicated with the first hollow penetrating part, and the other port of the conduction tube is connected to the first hollow penetrating part. The pressure sensors are connected in communication. In order to achieve the above object, another preferred embodiment of the present invention is a breathing device, which can be assembled with a breathing tube. The breathing device includes: a host, including a first airflow channel and a first housing, wherein the first housing It has a first communication part and a second communication part arranged in a dislocation, and the first communication part and the second communication part respectively pass through the first housing; the flow sensor is arranged in the host and is connected to the first communication part and the second communication part. connection; and a connection device, which can be detachably assembled between the main machine and the breathing tube, and includes a second airflow channel, a filter device, a first airflow guide part and a second airflow guide part, wherein the second airflow channel and the first airflow guide part One airflow channel is connected, and the filter device is arranged in the second airflow channel to filter the airflow from the breathing tube. The end of the first airflow guiding part and the end of the second airflow guiding part are connected to the host When the devices are assembled, they are respectively connected to the first communication part and the second communication part, and the other end of the first airflow guiding part receives the unfiltered airflow, and the other end of the second airflow guiding part receives the filtered air. The airflow; wherein, the airflow flows into the host machine through the second airflow channel, the filter device and the first airflow channel, and the flow sensor detects the pressure of the unfiltered airflow through the first communication part and the first airflow guide part, and the flow rate The sensor detects the pressure of the filtered airflow through the second communication part and the second airflow guiding part, so as to obtain the pressure difference of the airflow.

Further, the filter device divides the second airflow channel into an air inlet area between the filter device and the breathing tube and an air outlet area between the filter device and the main machine, and the air flow passes through the The air inlet area and the filtering device flow out from the air outlet area.

Further, the first communicating part also includes a first hollow channel, a first hollow penetrating part and a second hollow penetrating part communicating with each other, and the first hollow channel passes through the first casing so that the An inner side wall of the first housing communicates with an outer side wall of the first housing, and is connected between the first hollow penetrating portion and the second hollow penetrating portion, and the first hollow penetrating portion protrudes It is arranged on the inner wall, and the second hollow penetrating portion is protruded on the outer wall.

Further, the end of the first airflow guiding part has a first air outlet hole, the other end of the airflow guiding part has a first air inlet hole, and the first air outlet hole is connected to the second air outlet hole. The hollow penetrating portion is correspondingly arranged on an outer wall surface of a second casing of the connecting device. The first air outlet hole communicates with the first air outlet hole, and the first air inlet hole communicates with the wind inlet area.

Further, the main engine also includes a first conduction tube, a port of the first conduction tube is sleeved on the first hollow penetration part and communicated with the first hollow penetration part, and the first guide tube The other port of the through pipe is connected and communicated with the flow sensor.

Further, the main engine also includes a first conduit and a pressure detector, wherein the first conduit has a first port, a second port and a third port, and the first port is sleeved on the The first hollow penetrating part communicates with the first hollow penetrating part, the second port is connected and communicated with the flow sensor, the third port is connected and communicated with the pressure sensor, and the pressure detector passes through The pressure of the airflow when the airflow is located in the air inlet area is detected by the first conduction pipe, the first communication part and the first airflow guiding part.

Further, the second communicating part also includes a second hollow channel, a third hollow penetrating part and a fourth hollow penetrating part communicated with each other, the second hollow channel passes through the first casing and is arranged on Between the inner wall and the outer wall, and connected between the third hollow piercing portion and the fourth hollow piercing portion, the third hollow piercing portion protrudes on the inner wall, and the fourth hollow The piercing portion is protruded on the outer wall.

Further, the host machine also includes a second conduction tube, a port of the second conduction tube is sleeved on the third hollow penetration part and communicated with the third hollow penetration part, and the second conduction tube The other port of the tube is connected and communicated with the flow sensor.

Further, the end of the second airflow guide part has a second air outlet hole, the other end of the second airflow guide part has a second air inlet hole, and the second air outlet hole is connected to the second air outlet hole. The fourth hollow penetrating part is correspondingly arranged on an outer wall surface of the second casing, and when the connecting device is assembled with the main machine, the fourth hollow penetrating part is penetrating in the second air outlet hole The second air outlet hole is connected with the second air outlet hole, and the second air inlet hole is connected with the air outlet area.

In order to achieve the above object, another preferred embodiment of the present invention is a breathing device, which can be assembled with a breathing tube. The breathing device includes: a host, including a first airflow channel and a housing, wherein the housing has a first communication channel. component and the second communication part, the first communication part and the second communication part respectively pass through the casing; the flow sensor is arranged in the host and is connected with the first communication part and the second communication part; the pressure sensor is arranged in the host , and connected with the first communication part; and the connecting device, detachably assembled between the main unit and the breathing tube, and includes a second airflow channel, a filter device, a first airflow guiding part and a second airflow guiding part , wherein the second airflow passage communicates with the first airflow passage, the filter device is arranged in the second airflow passage for filtering the airflow from the breathing tube, the end of the first airflow guide part and the second airflow guide The end of the part communicates with the first communicating part and the second communicating part respectively when the host computer and the connection device are assembled, the other end of the first airflow guiding part receives the unfiltered airflow, and the second airflow guiding part The other end receives the filtered airflow; wherein, the airflow flows into the host machine through the second airflow channel, the filter device and the first airflow channel, so that the pressure sensor and the flow sensor pass through the first communicating part and the first airflow guiding part at the same time The pressure of the unfiltered airflow is detected, and the flow sensor can further detect the pressure of the filtered airflow through the second communication part and the second airflow guiding part, so as to obtain the pressure difference of the airflow.

In order to achieve the above object, another preferred embodiment of the present invention is a breathing device, which is assembled with a breathing tube. The breathing device includes: a host, including a first airflow channel and a first housing, wherein the first housing has a The communication part, the communication part runs through the first casing; the pressure sensor is arranged in the host and connected to the communication part; and the connection device is detachably assembled between the host and the breathing tube, and includes a second airflow channel, The filter device and the airflow guiding part, wherein the second airflow channel communicates with the first airflow channel, the airflow guiding part is arranged between the filter device and the breathing tube, and the filter device is arranged in the second airflow channel, when the host and the connecting device When combined, the communicating part communicates with the airflow guiding part and receives the airflow of the respirator.

Further, one end of the airflow guiding part communicates with the communication part when the main unit is assembled with the connection device, and the other end of the airflow guiding part receives the unfiltered airflow.

Further, the communicating part also includes a hollow channel, a first hollow penetrating part and a second hollow penetrating part communicated with each other, the hollow channel passes through the first casing and is arranged on the first casing. Between an inner wall and an outer wall, and connected between the first hollow penetrating portion and the second hollow penetrating portion, the first hollow penetrating portion protrudes on the inner wall, and the second hollow penetrating portion The piercing portion is protruded on the outer wall.

Further, the end of the airflow guiding part has an air outlet hole, the other end of the airflow guiding part has an air inlet hole, and the air outlet hole is set corresponding to the second hollow penetrating part On an outer wall surface of a second housing of the connection device, when the connection device is assembled with the main unit, the second hollow penetrating portion is passed through the air outlet hole and communicates with the air outlet hole , the air inlet hole communicates between the filter device and the breathing tube.

In order to achieve the above object, another preferred embodiment of the present invention is a breathing device, which is assembled with a breathing tube. The breathing device includes: a host, including a first airflow channel and a first housing, wherein the first housing has a The first communication part and the second communication part arranged in a dislocation, the first communication part and the second communication part respectively pass through the first casing; the flow sensor is arranged in the host and connected with the first communication part and the second communication part and a connection device, which can be detachably assembled between the main machine and the breathing tube, and includes a second airflow channel, a filter device, a first airflow guide part and a second airflow guide part, wherein the second airflow channel and the first airflow guide part The airflow passages are connected, the filter device is arranged in the second airflow passage, the first airflow guiding part is arranged between the filter device and the breathing tube, when the main unit and the connection device are combined, the first communication part and the second communication part The first airflow guiding part and the second airflow guiding part respectively communicate with and respectively receive the airflow of the respirator to provide the flow sensor to obtain the pressure difference of the airflow.

Further, one end of the first airflow guiding part and one end of the second airflow guiding part communicate with the first communicating part and the second communicating part respectively when the host machine is assembled with the connecting device , and the other end of the first airflow guiding part receives unfiltered airflow, and the other end of the second airflow guiding part receives filtered airflow.

Further, the first communicating part also includes a first hollow passage, a first hollow penetrating part and a second hollow penetrating part communicating with each other, and the second communicating part also includes a second communicating part. Hollow channel, a third hollow penetrating part and a fourth hollow penetrating part, the first hollow channel and the second hollow channel respectively pass through the first shell so that an inner wall of the first shell and a The outer wall is connected, and the first hollow channel is connected between the first hollow penetrating part and the second hollow penetrating part, and the second hollow channel is connected between the third hollow penetrating part and the fourth hollow penetrating part. Between the piercing portions, the first hollow piercing portion and the third hollow piercing portion are respectively protruded on the inner wall, and the second hollow piercing portion and the fourth hollow piercing portion are respectively protruded on the inner wall. on the outer wall.

Further, the end of the first airflow guiding part and the end of the second airflow guiding part respectively have a first air outlet hole and a second air outlet hole, and the first airflow guiding part The other end portion and the other end portion of the second airflow guiding portion respectively have a first air inlet hole and a second air inlet hole, and the first air outlet hole and the second air outlet hole are respectively connected to the first air outlet hole. Two hollow piercing parts and the fourth hollow piercing part are correspondingly arranged on an outer wall surface of a second housing of the connecting device. When the connecting device is assembled with the main engine, the second hollow piercing part part and the fourth hollow piercing part are respectively pierced in the first air outlet hole and the second air outlet hole and communicate with the first air outlet hole and the second air outlet hole respectively, and the first inlet The air hole is connected between the filter device and the breathing tube, and the second air inlet hole is connected between the filter device and the host.

Compared with prior art, the beneficial effect of the present invention is:

The breathing apparatus of the present invention can compare the pressure of the airflow filtered by the filter device and the pressure of the airflow not filtered by the filter device to calculate the flow rate of the airflow, and the pressure sensor can directly detect the user through the connecting part and the airflow guide part. The pressure of the airflow generated during breathing, so the results detected by the pressure sensor can accurately reflect the pressure of the airflow generated when the user breathes, making the breathing device more accurate according to the airflow generated when the user breathes Operate accordingly. The flow sensor can directly sense the pressure difference between the air inlet area and the air outlet area on the opposite sides of the filter device, so that the filter device actually has a function similar to a flow resistor, so the breathing device of the present invention does not need additional flow resistance device, so the production cost of the breathing apparatus can be reduced.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is a schematic diagram of the exploded structure when the breathing apparatus and the breathing tube of the first preferred embodiment of the present invention are disassembled;

Fig. 2 is a schematic diagram of the combined structure when the breathing device shown in Fig. 1 is combined with the breathing tube;

Fig. 3 is a schematic diagram of an exploded structure when the breathing apparatus and the breathing tube of the second preferred embodiment of the present invention are disassembled;

Fig. 4 is a schematic diagram of the combined structure when the breathing apparatus shown in Fig. 3 is combined with the breathing tube;

Fig. 5 is a schematic diagram of the combined structure of the combination of the breathing device and the breathing tube according to the third preferred embodiment of the present invention.

Reference signs:

1, 3, 5: Breathing apparatus

11, 31: Host

111, 311: the first shell

112, 312: the first airflow channel

113: Connected components

316: The first connected component

317: Second connecting component

114, 314: inner wall

115, 315: outer wall

116, 516: pressure sensor

313: flow sensor

1121, 3121: First Setup Department

1131: hollow channel

3161: First Hollow Channel

3171: Second Hollow Channel

1132, 3162: the first hollow piercing part

1133, 3163: the second hollow piercing part

3132: The third hollow piercing part

3133: The fourth hollow piercing part

1134: Conduit

3134, 5134: the first conduction tube

3135: Second Conduit

12, 32: connecting device

120, 320: second housing

121, 321: the second airflow channel

122, 322: filter device

123: Airflow guide

323: The first airflow guiding part

326: the second airflow guiding part

124, 324: into the wind area

125, 325: wind area

127, 327: The second setting department

1211, 3211: Containment

1200, 3200: outer wall surface

1231: Outlet hole

3231: The first air hole

3261: The second air outlet hole

1232: Air inlet hole

3232: The first air inlet hole

3262: The second air inlet hole

13, 33: breathing tube

130, 330: Airflow.

detailed description

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Elements and features described in one drawing or one embodiment of the present invention may be combined with elements and features shown in one or more other drawings or embodiments. It should be noted that representation and description of components and processes that are not related to the present invention and known to those of ordinary skill in the art are omitted from the drawings and descriptions for the purpose of clarity. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Referring to Fig. 1 and Fig. 2, wherein Fig. 1 is a schematic diagram of an exploded structure of the first preferred embodiment of the present invention when the breathing device and the breathing tube are disassembled, and Fig. 2 is the combined structure of the breathing device and the breathing tube shown in Fig. 1 schematic diagram. As shown in FIG. 1 and FIG. 2 , the respiratory device 1 of this embodiment may be but not limited to a CPAP device. The breathing device 1 is detachably combined with the breathing tube 13 and communicates with each other, wherein the breathing tube 13 receives an airflow 130 generated by the user blowing air, and transmits the airflow 130 into the breathing device 1, so that the breathing device 1 according to The airflow 130 performs a corresponding operation. The breathing device 1 includes a host 11 , a connecting device 12 and a pressure sensor 116 , wherein the host 11 is used to provide the main operating functions of the breathing device 1 and has a first shell 111 and a first airflow channel 112 . The first housing 111 has an inner side wall 114 and an outer side wall 115 arranged in opposite positions, and has at least one communicating part 113, the communicating part 113 penetrates through the first housing 111 so that the inner side wall 114 and the outer side of the first housing 111 The walls 115 communicate with each other through the communicating member 113 . The first air passage 112 is formed by part of the first housing 111 .

In some embodiments, as shown in FIG. 1 , the communicating part 113 is composed of a hollow channel 1131 , a first hollow penetrating part 1132 and a second hollow penetrating part 1133 , wherein the hollow channel 1131 runs through the first housing 111 and is set Between the inner wall 114 and the outer wall 115 of the first housing 111 , opposite ends of the hollow channel 1131 communicate with the inner wall 114 and the outer wall 115 of the first housing 111 respectively. The first hollow penetrating portion 1132 protrudes from the inner wall 114 of the first casing 111 , is hollow, and communicates with one end of the hollow channel 1131 communicating with the inner wall 114 . The second hollow penetrating portion 1133 protrudes from the outer wall 115 of the first casing 111 , is hollow, and is connected to the other end of the hollow channel 1131 communicating with the outer wall 115 .

In addition, in other embodiments, the host 11 further includes a conduction tube 1134, wherein the conduction tube 1134 has a two-port structure, and one port of the conduction tube 1134 is sleeved on the first hollow penetrating portion 1132 and connected to the second A hollow penetrating portion 1132 is connected.

The connecting device 12 is detachably assembled between the host machine 11 and the breathing tube 13, and includes a second casing 120, a second airflow channel 121, a filter device 122 and an airflow guiding part 123, wherein the second airflow channel 121 is connected to the first airflow channel 121. An air flow channel 112 is correspondingly arranged in the connection device 12 and is formed by a part of the second casing 120. When the connection device 12 is assembled between the host 11 and the breathing tube 13, the second air flow channel 121 and the first The airflow channel 112 communicates with the breathing tube 13 and can receive the airflow 130 from the breathing tube 13 . The filter device 122 is disposed in the second airflow channel 121 and partially engaged in the second housing 120 for filtering the airflow 130 from the breathing tube 13 . The filter device 122 divides the second air flow channel 121 into an air inlet area 124 between the filter device 122 and the breathing pipe 13 and an air outlet area 125 between the filter device 122 and the main frame 11, and the filter device 122 is used to separate the air from the air inlet. The airflow 130 flowing into the area 124 is filtered and sent out at the air outlet area 125 . The airflow guiding part 123 is provided in the second housing 120 of the connecting device 12 in a penetrating manner, and the two opposite ends of the airflow guiding part 123 respectively have an air outlet hole 1231 and an air inlet hole 1232, and the air outlet hole 1231 and the air inlet hole 1232 The second hollow piercing portion 1133 is correspondingly arranged on an outer wall surface 1200 of the second housing 120, and the size of the air outlet hole 1231 corresponds to the size of the second hollow piercing portion 1133, when the host 11 and the connecting device When the 12 phases are assembled, the second hollow penetrating portion 1133 is penetrated in the air outlet hole 1231 to communicate with the air outlet hole 1231 . The air inlet hole 1232 of the airflow guiding part 123 communicates with the air inlet area 124 for receiving the airflow 130 located in the air inlet area 124 and not filtered by the filter device 122 .

The pressure sensor 116 is disposed in the host 11 and is connected to another port of the conduit 1134 to communicate with it for detecting the pressure of the received airflow. Certainly, in the above-mentioned embodiment, the pressure sensor 116 can also be directly connected to the first hollow penetrating portion 1132 , so the host 11 does not need to be provided with the conduction tube 1134 .

In some embodiments, the first casing 111 of the host 11 also has a first setting portion 1121, which is formed by extending the outer wall 115 toward the outside of the host 11, and covers part of the first airflow channel 112, and the connecting device 12 Correspondingly, there is a receiving part 1211, which is adjacent to the air outlet area 125 corresponding to the first setting part 1121, and is formed by a part of the second casing 120 being concave, and is connected with the second airflow. The air outlet area 125 of the channel 121 is connected. In addition, the storage space of the receiving part 1211 corresponds to the size of the first setting part 1121. When the connecting device 12 is assembled with the host 11, the first setting part 1121 accommodates And engage in the receiving portion 1211 , so as to fix the combined state between the connecting device 12 and the host 11 . In addition, in other embodiments, the hollow channel 1131 can actually be partly disposed in the first setting portion 1121 formed by the outer wall 115 and penetrate the first setting portion 1121, while the second hollow penetrating portion 1133 is connected to the air outlet hole. 1231 is correspondingly disposed on a surface of the first setting portion 1121 formed by the outer wall 115 .

In addition, the connecting device 12 also has a second setting portion 127, which is formed by extending the second housing 120 from the position adjacent to the air inlet area 124 to the outside of the second housing 120, and covers part of the second airflow channel 112. The air inlet area 124 is used for the sheathing of the breathing tube 13 so that the breathing tube 13 can be combined with the connecting device 12 .

Please refer to Fig. 2 again, when the host 11, the connecting device 12 and the breathing tube 13 are combined, the first setting part 1121 of the host 11 is accommodated in the first receiving part 1211, and the second hollow passing part 1133 is passed through. Set in the air outlet hole 1231 and communicate with the air outlet hole 1231, the breathing tube 13 is sleeved on the second setting part 127 of the connecting device 12, at this time, the airflow 130 of the breathing tube 13 can flow into the second airflow channel 121 The air inlet area 124 is filtered by the filter device 122 , and then introduced into the host 11 through the air outlet area 125 and the first airflow channel 112 , so that the host 11 performs corresponding operations according to the airflow 130 . In addition, since the pressure sensor 116 communicates with the conduction tube 1134 , the conduction tube 1134 communicates with the first hollow penetrating portion 1132 of the communicating member 113 , and the second hollow penetrating portion 1133 of the communicating member 113 communicates with the airflow guiding portion 123 The air outlet hole 1231 of the airflow guiding part 123 is connected with the air inlet area 124 receiving the airflow 130 from the breathing tube 13 . Therefore, when the airflow 130 of the breathing tube 13 flows into the host machine 11 through the second airflow channel 121 and the first airflow channel 112, the pressure sensor 116 can detect the airflow through the conduction tube 1134, the communication part 113 and the airflow guide part 123. 130 is located at the pressure of the wind-intake area 124, so compared with the pressure sensor of the conventional breathing apparatus, which can only detect the pressure of the airflow produced when the user breathes through the filtering device, the pressure sensor 116 of the present invention detects The result can accurately reflect the pressure of the airflow generated when the user breathes, so that the breathing device 1 can be more accurately operated according to the airflow generated by the user when breathing, such as accurately controlling the airflow supplied to the user. pressure.

Referring to Fig. 3 and Fig. 4, wherein Fig. 3 is a schematic diagram of the exploded structure of the second preferred embodiment of the present invention when the breathing device and the breathing tube are disassembled, and Fig. 4 is the combined structure of the breathing device and the breathing tube shown in Fig. 3 schematic diagram. As shown in Figures 3 and 4, the respiratory device 3 of this embodiment can be detachably assembled with a breathing tube 33 to communicate with each other, wherein the breathing tube 33 receives an airflow 330 generated by the user blowing air, and directs the airflow 330 is introduced into the breathing apparatus 3 , so that the breathing apparatus 3 performs corresponding operations according to the airflow 330 . The breathing device 3 includes a host 31 , a connecting device 32 and a flow sensor 313 , wherein the host 31 is used to provide the main operating functions of the breathing device 3 and has a first casing 311 and a first airflow channel 312 . The first housing 311 has an inner side wall 314 and an outer side wall 315 arranged in opposite positions, and has a first communication part 316 and a second communication part 317 arranged in a dislocation, and the first communication part 316 and the second communication part 317 penetrate through the The first casing 311 allows the inner sidewall 314 and the outer sidewall 315 of the first casing 311 to communicate with each other through the first communication part 316 and the second communication part 317 respectively. The first air passage 312 is formed by part of the first housing 311 .

In some embodiments, as shown in FIG. 3 , the first communicating part 316 is composed of a first hollow channel 3161 , a first hollow penetrating portion 3162 and a second hollow penetrating portion 3163 , wherein the first hollow channel 3161 runs through the second hollow penetrating portion 3163 . A housing 311 is disposed between the inner side wall 314 and the outer side wall 315 of the first housing 311, and the opposite ends of the first hollow channel 3161 communicate with the inner side wall 314 and the outer side wall 315 of the first housing 311 respectively . The first hollow penetrating portion 3162 protrudes from the inner wall 314 of the first casing 311 , is hollow, and communicates with one end of the first hollow channel 3161 communicating with the inner wall 314 . The second hollow penetrating portion 3163 protrudes from the outer wall 315 of the first casing 311 , is hollow, and is connected to the other end of the first hollow passage 3161 communicating with the outer wall 315 . The second communication part 317 is composed of a second hollow channel 3171 , a third hollow penetrating portion 3132 and a fourth hollow penetrating portion 3133 , wherein the second hollow channel 3171 runs through the first housing 311 and is disposed on the first housing 311 Between the inner side wall 314 and the outer side wall 315 of the second hollow channel 3171 , and opposite ends of the second hollow channel 3171 communicate with the inner side wall 314 and the outer side wall 315 of the first housing 311 respectively. The third hollow penetrating portion 3132 protrudes from the inner wall 314 of the first casing 311 , is hollow, and communicates with one end of the second hollow channel 3171 communicating with the inner wall 314 . The fourth hollow penetrating portion 3133 protrudes from the outer wall 315 of the first housing 311 , is hollow, and is connected to the other end of the second hollow channel 3171 communicating with the outer wall 315 .

The connection device 32 is detachably assembled between the main unit 31 and the breathing tube 33, and includes a second housing 320, a second airflow channel 321, a filter device 322, a first airflow guiding part 323 and a second airflow guiding part 326, wherein the second airflow channel 321 and the first airflow channel 312 are arranged in the connection device 32 correspondingly, and are formed by a part of the second housing 320, when the connection device 32 is assembled between the host machine 31 and the breathing tube 33 , the second airflow channel 321 communicates with the first airflow channel 312 and the breathing tube 33 , and can receive the airflow from the breathing tube 33 . The filter device 322 is disposed in the second airflow channel 321 and partially engaged in the second housing 320 for filtering the airflow 330 from the breathing tube 33 . The filter device 322 divides the second air flow channel 321 into an air inlet area 324 between the filter device 322 and the breathing pipe 33 and an air outlet area 325 between the filter device 322 and the main frame 31, and the filter device 322 is used to separate the air from the air inlet. The airflow flowing into the area 124 is filtered and sent out in the air outlet area 125 . The first airflow guide part 321 and the second airflow guide part 322 are disposed in the second housing 320 of the connection device 32 in a dislocated and penetrating manner, and the two opposite ends of the first airflow guide part 323 respectively have The first air outlet hole 3231 and the first air inlet hole 3232, the two opposite ends of the second airflow guiding part 326 respectively have the second air outlet hole 3261 and the second air inlet hole 3262, the first air outlet hole 3231 and the second air inlet hole 3262 The two hollow piercing portions 3163 are correspondingly disposed on an outer wall surface 3200 of the second casing 320 , and the size of the first air outlet hole 3231 corresponds to the size of the second hollow piercing portion 3163 . The second air outlet hole 3261 is disposed on the outer wall surface 3200 of the second casing 320 corresponding to the fourth hollow penetrating portion 3133 , and the hole size of the second air outlet hole 3261 corresponds to that of the fourth hollow penetrating portion 3133 . size. When the main unit 31 is assembled with the connecting device 32, the second hollow piercing portion 3163 is pierced in the first air outlet hole 3231 to communicate with the first air outlet hole 3231, and the fourth hollow piercing portion 3133 is pierced in the first air outlet hole 3231. The second air outlet hole 3261 is in communication with the second air outlet hole 3261 . The first air inlet hole 3232 of the first airflow guide part 323 communicates with the air inlet area 324 for receiving the airflow 330 located in the air inlet area 324 and not filtered by the filter device 322, while the second airflow guide part 326 The second air inlet hole 3262 communicates with the air outlet area 325 for receiving the airflow 330 located in the air outlet area 325 and filtered by the filter device 322 .

In some embodiments, the host 31 further includes a first conduction pipe 3134 and a second conduction pipe 3135, the first conduction pipe 3134 and the second conduction pipe 3135 are two-port structures respectively, wherein the first conduction pipe 3134 One port of the second conduit 3135 is sleeved on the third hollow penetrating portion 3132 and connected to the third hollow penetrating portion 3162. The setting part 3132 is connected.

The flow sensor 313 is arranged in the host machine 31 and communicated with the other port of the first conduction pipe 3134 and the other port of the second conduction pipe 3135 to detect that the flow sensor is not filtered by the filter device 322 and is located in the air inlet area. 324 of the airflow 330 pressure and the pressure of the airflow 330 when it is filtered by the filter device 322 and is located in the air outlet area 325, so as to obtain the pressure difference when the airflow 330 is located in the air inlet area 324 and when it is located in the air outlet area 325, so that the host machine 31 can be controlled by Calculate the flow rate of the airflow 330 based on the pressure difference. In the above embodiment, the flow sensor 313 can also be directly connected to the first hollow piercing portion 3162 and the third hollow piercing portion 3132 to communicate, so the host 31 does not need to be provided with the first conduction pipe 3134 and the second conduction pipe 3134. Tube 3135.

In some embodiments, the first housing 311 of the host 31 also has a first setting portion 3121, which is formed by extending the outer wall 315 toward the outside of the host 31, and covers part of the first air flow channel 312, and the connecting device 32 Correspondingly, there is a receiving part 3211, which is adjacent to the air outlet area 325 corresponding to the first setting part 3121, and is formed by a part of the second casing 320 being concave, and is connected with the second airflow. The air outlet area 325 of the channel 321 is connected. In addition, the storage space of the receiving part 3211 corresponds to the size of the first setting part 3121. When the connecting device 32 is combined with the host 31, the first setting part 3121 accommodates And engage in the receiving portion 3211 , thereby fixing the combined state between the connecting device 32 and the host 31 .

In addition, the connecting device 32 also has a second setting portion 327 , which is formed by extending toward the outside of the second housing 320 from a portion of the second housing 320 adjacent to the air inlet area 324 , and covers part of the second airflow channel 312 The air inlet area 324 is used for the sheathing of the breathing tube 33 so that the breathing tube 33 and the connecting device 32 are assembled.

Please refer to Fig. 4 again, when the host machine 31, the connection device 32 and the breathing tube 33 are assembled together, the second hollow piercing part 3163 and the fourth hollow piercing part 3133 are respectively pierced in the first air outlet hole 3231 and the second air outlet hole 3231. The air outlet hole 3261 communicates with the first air outlet hole 3231 and the second air outlet hole 3261 respectively, and the breathing tube 33 is sleeved on the second setting portion 327 of the connecting device 32. At this time, the air flow 330 of the breathing tube 33 It can flow into the air inlet area 324 of the second airflow channel 321, and after being filtered by the filter device 322, it is then introduced into the host machine 31 by the air outlet area 325 and the first air flow channel 312, so that the host machine 31 performs phase-by-phase operation according to the airflow 330. corresponding operation. In addition, since the flow sensor 313 communicates with the first conduction pipe 3134 and the second conduction pipe 3135 respectively, the first conduction pipe 3134 communicates with the first hollow penetrating portion 3162 , and the second hollow penetrating portion 3163 communicates with the second hollow penetrating portion 3163 . The first air outlet hole 3231 of an airflow guide part 323 is connected, and the first air inlet hole 3232 of the first airflow guide part 323 is connected with the air inlet area 324 receiving the airflow 330 transmitted by the breathing tube 33, The second conduction pipe 3135 communicates with the third hollow piercing portion 3132 , the fourth hollow piercing portion 3133 communicates with the second air outlet hole 3261 of the second airflow guiding portion 326 , and the second airflow guiding portion 326 The second air inlet hole 3262 communicates with the air outlet area 325 that receives the airflow 330 from the breathing tube 33 . Therefore, when the airflow 330 of the breathing tube 33 flows into the host machine 31 through the second airflow channel 321 and the first airflow channel 312, the flow sensor 313 can pass through the first conduit 3134, the first communicating part 316, and the first airflow conduit. Guide part 323 to detect the pressure of airflow 330 when it is located in air inlet area 324, and detect the pressure of airflow 330 when it is located in air outlet area 325 through the second conduction pipe 3135, the second communicating part 317 and the second airflow guiding part 326 In this way, the flow sensor 313 can detect the pressure difference between the air inlet area 324 and the air outlet area 325, so that the breathing apparatus 3 calculates the flow rate of the airflow 330, so that the filtering device 322 of the breathing apparatus 3 can replace the conventional breathing apparatus Compared with the conventional breathing device, the flow resistance device needs to be provided additionally, and the cost of the breathing device 3 of this embodiment is reduced.

Please refer to FIG. 5 , which is a schematic diagram of the combined structure of the breathing device and the breathing tube according to the third preferred embodiment of the present invention. As shown in Figure 5, the structure of the respiratory device 5 of this embodiment is similar to that of the respiratory device 3 shown in Figures 3 and 4, and components with the same symbols represent similar structures and functions, so the features of the components will not be repeated here. .

The difference between the breathing apparatus 5 of this example and the breathing apparatus 3 of the second preferred embodiment shown in FIG. Compared with the first conduit 3134 shown in FIG. 3 having a two-port structure, the first conduit 5134 of this embodiment is changed to a three-port structure, wherein the first port of the first conduit 5134 is sleeved on the first port. On the hollow penetrating part 3162, the second port of the first conduction pipe 5134 is connected and communicated with the flow sensor 313, and the third port of the first conduction pipe 5134 is connected and communicated with the pressure sensor 516. In this way, the pressure The sensor 516 and the flow sensor 313 can be connected to the air inlet through the first conduit 3134 , the first hollow penetrating portion 3162 , the first hollow channel 3161 , the second hollow penetrating portion 3163 , and the first airflow guiding portion 323 at the same time. area 324, so that both the pressure sensor 516 and the flow sensor 313 can detect the pressure of the airflow 330 when it is located in the air inlet area 324, so the result detected by the pressure sensor 516 of this embodiment also accurately reflects what is produced when the user breathes Therefore, the breathing device 5 can be more accurately operated according to the airflow generated when the user breathes, for example, the pressure supplied to the user can be accurately controlled.

To sum up, the present invention provides a breathing device capable of detecting airflow pressure difference, wherein the main body of the breathing device has a communication part, the connecting device of the breathing device has an airflow guiding part, and one end of the communication part is connected to the pressure sensor in the main body connected to communicate with each other, the other end of the communication part is connected to one end of the airflow guiding part to communicate with each other, and the other end of the airflow guiding part receives the airflow sent by the breathing tube and not filtered by the filter device, so that, The pressure sensor can directly detect the pressure of the airflow generated when the user breathes through the connecting part and the airflow guiding part, so the result detected by the pressure sensor can accurately reflect the pressure of the airflow generated when the user breathes. The pressure makes the breathing device more accurately operate according to the airflow generated when the user breathes. In addition, since the flow sensor of the respiratory device of the present invention can directly sense the pressure difference between the air inlet area and the air outlet area on opposite sides of the filter device, the filter device actually has a function similar to a flow resistor. The invention of the breathing device does not require an additional flow resistor, so the production cost of the breathing device can be reduced. Therefore, the respiratory device capable of detecting airflow pressure difference of the present invention has great industrial value, and an application is filed according to law.

In the above-mentioned embodiments of the present invention, the serial numbers of the embodiments are only for convenience of description, and do not represent the advantages and disadvantages of the embodiments. The description of each embodiment has its own emphases, and for the part that is not described in detail in a certain embodiment, refer to the relevant descriptions of other embodiments.

In the embodiments of the device and method of the present invention, obviously, each component or each step can be decomposed, combined and/or recombined after decomposing. These decompositions and/or recombinations should be considered equivalents of the present invention. Meanwhile, in the above descriptions of specific embodiments of the present invention, features described and/or shown for one embodiment can be used in one or more other embodiments in the same or similar manner, and combination of features, or replace features in other embodiments.

It should be emphasized that the term "comprising/comprising" when used herein refers to the presence of a feature, element, step or component, but does not exclude the presence or addition of one or more other features, elements, steps or components.

Finally, it should be noted that although the present invention and its advantages have been described in detail above, it should be understood that various changes, substitutions and modifications can be made without departing from the spirit and scope of the present invention defined by the appended claims. transform. Moreover, the scope of the present invention is not limited to the specific embodiments of the procedures, devices, means, methods and steps described in the specification. Those of ordinary skill in the art will readily appreciate from the disclosure of the present invention that existing and future devices that perform substantially the same function or obtain substantially the same results as the corresponding embodiments described herein can be used in accordance with the present invention. The developed process, device, means, method or steps. Accordingly, the appended claims are intended to include within their scope such processes, means, means, methods or steps.

Claims (28)

1. A breathing apparatus capable of detecting airflow pressure difference, which is assembled with a breathing tube, is characterized in that the breathing apparatus comprises: A main engine, including a first airflow passage and a first casing, wherein a communication part is provided in the first casing, and the communication part passes through the first casing; a pressure sensor, arranged in the host and connected to the communicating part; and A connecting device, which can be detachably assembled between the host and the breathing tube, and includes a second airflow channel, a filter device and an airflow guiding part, wherein the second airflow channel is connected to the first airflow channel Through, the filter device is arranged in the second airflow channel, one end of the airflow guiding part communicates with the communicating part when the host machine is assembled with the connecting device, and the other end of the airflow guiding part receives the filtered air stream; Wherein, the airflow flows into the host machine through the second airflow channel, the filter device and the first airflow channel, and the pressure sensor detects the pressure of the unfiltered airflow through the communication part and the airflow guiding part . 2. The breathing apparatus as claimed in claim 1, wherein the filter device separates the second air flow channel into an air inlet area between the filter device and the breathing tube and an air inlet area between the filter device and the main body. An air outlet area between them, and the airflow passes through the air inlet area, the filter device and flows out from the air outlet area. 3 . The breathing apparatus as claimed in claim 2 , wherein the first housing has an inner side wall and an outer side wall oppositely disposed, and the inner side wall and the outer side wall communicate with each other through the connecting member. 4 . 4. The breathing apparatus according to claim 3, wherein the communicating part further comprises a hollow channel, a first hollow penetrating part and a second hollow penetrating part communicated with each other, and the hollow channel runs through the The first casing is disposed between the inner wall and the outer wall, and is connected between the first hollow penetrating portion and the second hollow penetrating portion, and the first hollow penetrating portion protrudes from the inner side On the wall, the second hollow penetrating portion protrudes from the outer wall. 5. The breathing apparatus according to claim 4, wherein the airflow guiding part is arranged in a second housing of the connecting device, and the end of the airflow guiding part has an air outlet hole, the airflow guiding part The other end of the airflow guide part has an air inlet hole, and the air outlet hole is arranged on an outer wall surface of the second housing corresponding to the second hollow penetrating part. When the connecting device and the host When assembled, the second hollow piercing portion is penetrated in the air outlet hole and communicated with the air outlet hole, and the air inlet hole is communicated with the air inlet area. 6. The breathing apparatus as claimed in claim 5, characterized in that, the connecting device further has a second setting portion, which is directed toward the outside of the second housing from the position adjacent to the wind inlet area of the second housing The second airflow channel formed by extending and covering part is used for sheathing the breathing tube. 7. The breathing apparatus according to claim 5, characterized in that, the first housing further has a first setting portion, which is formed by extending the outer wall toward the outside of the main body, and covers part of the first airflow channel . 8. The breathing apparatus as claimed in claim 7, characterized in that, the connection device further comprises a receiving portion, which is adjacent to the wind outlet area corresponding to the first setting portion, and is formed by a part of the connection device The second casing is formed by indentation and communicates with the air outlet area of the second airflow channel. When the connecting device is assembled with the main unit, the first setting part is accommodated and engaged in the receiving part . 9. The breathing apparatus according to claim 7, wherein the hollow channel part is arranged in the first setting part formed by the outer wall and passes through the first setting part, and the second hollow penetrating part It is arranged on a surface of the first setting portion. 10. The breathing apparatus according to claim 4, characterized in that, the main body further comprises a conduction tube, a port of the conduction tube is sheathed in the first hollow penetrating part and is connected with the first hollow penetrating part. part is connected, and the other port of the conduit is connected and communicated with the pressure sensor. 11. A breathing apparatus, which is combined with a breathing tube, is characterized in that the breathing apparatus comprises: A main engine, comprising a first airflow channel and a first housing, wherein a first communication part and a second communication part are provided in a shifted position in the first housing, and the first communication part and the second communication part are respectively penetrating through the first casing; a flow sensor, disposed in the host, and connected to the first communication part and the second communication part; and A connection device, which can be separately assembled between the main machine and the breathing tube, and includes a second airflow channel, a filter device, a first airflow guide part and a second airflow guide part, wherein the first airflow channel Two airflow passages communicate with the first airflow passage, the filter device is arranged in the second airflow passage, one end of the first airflow guiding part and one end of the second airflow guiding part are connected between the host and the When the connection device is assembled, it communicates with the first communicating part and the second communicating part respectively, and the other end of the first airflow guide part receives an unfiltered airflow, and the second airflow guide part The other end receives the filtered air flow; Wherein, the airflow flows into the host machine through the second airflow channel, the filter device and the first airflow channel, and the flow sensor detects the unfiltered For the pressure of the airflow, the flow sensor detects the pressure of the filtered airflow through the second communication part and the second airflow guiding part, so as to obtain the pressure difference of the airflow. 12. The breathing apparatus as claimed in claim 11, wherein the filter device separates the second air flow passage into an air inlet area between the filter device and the breathing tube and an air inlet area between the filter device and the main body. An air outlet area between them, and the airflow passes through the air inlet area, the filter device and flows out from the air outlet area. 13. The breathing apparatus according to claim 12, wherein the first communicating part further comprises a first hollow channel, a first hollow penetrating part and a second hollow penetrating part communicating with each other, the The first hollow passage runs through the first casing to communicate with an inner side wall of the first casing and an outer side wall of the first casing, and is connected to the first hollow passage part and the second hollow passage. Between the setting parts, the first hollow penetrating part protrudes on the inner side wall, and the second hollow penetrating part protrudes on the outer side wall. 14. The breathing apparatus according to claim 13, wherein the end of the first air guiding part has a first air outlet hole, and the other end of the air guiding part has a first inlet Air hole, the first air outlet hole is set on an outer wall surface of a second housing of the connecting device corresponding to the second hollow penetrating part, when the connecting device is assembled with the host, the first The two hollow piercing parts are pierced in the first air outlet hole and communicate with the first air outlet hole, and the first air inlet hole is in communication with the air inlet area. 15. The breathing apparatus according to claim 13, characterized in that, the main body further comprises a first conduit, a port of the first conduit is sleeved on the first hollow penetrating portion and is connected to the The first hollow penetrating part is connected, and the other port of the first conduit is connected with the flow sensor for communication. 16. The breathing apparatus as claimed in claim 13, wherein the host machine further comprises a first conduit and a pressure detector, wherein the first conduit has a first port, a second port and A third port, the first port is sleeved on the first hollow penetrating part and communicated with the first hollow penetrating part, the second port is connected and communicated with the flow sensor, and the third port is connected with the flow sensor The pressure sensor is connected and communicated, and the pressure detector detects the pressure of the airflow when it is located in the wind inlet area through the first conduit, the first communication part and the first airflow guiding part. 17. The breathing apparatus according to claim 13, wherein the second communicating part further comprises a second hollow channel, a third hollow penetrating part and a fourth hollow penetrating part communicating with each other, the The second hollow passage runs through the first housing and is arranged between the inner wall and the outer wall, and is connected between the third hollow penetrating part and the fourth hollow penetrating part, the third hollow penetrating part The fourth hollow penetrating portion is protruded on the inner wall, and the fourth hollow penetrating portion is protruded on the outer wall. 18. The breathing apparatus according to claim 17, characterized in that, the main body further comprises a second conduit, a port of the second conduit is sheathed in the third hollow penetrating part and connected to the first The three hollow penetrating parts communicate with each other, and the other port of the second conduction pipe is connected with the flow sensor for communication. 19. The breathing apparatus according to claim 17, wherein the end portion of the second airflow guiding portion has a second air outlet hole, and the other end portion of the second airflow guiding portion has a first air outlet hole. Two air inlet holes, the second air outlet hole is set on an outer wall surface of the second casing corresponding to the fourth hollow penetrating part, when the connecting device is assembled with the main engine, the fourth hollow The piercing part is pierced in the second air outlet hole and communicated with the second air outlet hole, and the second air inlet hole is communicated with the air outlet area. 20. A breathing apparatus, characterized in that, combined with a breathing tube, the breathing apparatus comprises: A main engine, including a first airflow channel and a housing, wherein the housing has a first communication part and a second communication part, and the first communication part and the second communication part penetrate through the housing respectively; a flow sensor, arranged in the host, and connected with the first communicating part and the second communicating part; a pressure sensor, arranged in the host and connected to the first communication part; and A connection device, detachably assembled between the host and the breathing tube, and includes a second airflow channel, a filter device, a first airflow guide part and a second airflow guide part, wherein the first airflow channel Two airflow passages communicate with the first airflow passage, the filter device is arranged in the second airflow passage, one end of the first airflow guiding part and one end of the second airflow guiding part are connected between the host and the When the connecting device is assembled, it communicates with the first communication part and the second communication part respectively, the other end of the first airflow guiding part receives an unfiltered airflow, and the other end of the second airflow guiding part One end receives the filtered air flow; Wherein, the airflow flows into the host machine through the second airflow channel, the filter device and the first airflow channel, so that the pressure sensor and the flow sensor are simultaneously detected by the first communicating part and the first airflow guiding part. The pressure of the unfiltered airflow, and the flow sensor also detects the pressure of the filtered airflow through the second communication component and the second airflow guiding part, so as to obtain the pressure difference of the airflow. 21. A breathing apparatus combined with a breathing tube, characterized in that the breathing apparatus comprises: A main engine, including a first airflow passage and a first casing, wherein a communication part is provided in the first casing, and the communication part passes through the first casing; a pressure sensor, arranged in the host and connected to the communicating part; and A connecting device, which can be detachably assembled between the host and the breathing tube, and includes a second airflow channel, a filter device and an airflow guiding part, wherein the second airflow channel is connected to the first airflow channel The airflow guide part is arranged between the filter device and the breathing tube, the filter device is arranged in the second airflow channel, when the main unit is assembled with the connection device, the communication part and the airflow guide The leading part is in communication with and receives an air flow of the respirator. 22. The breathing apparatus as claimed in claim 21, wherein one end of the airflow guiding part communicates with the communication part when the main machine is assembled with the connection device, and the other end of the airflow guiding part Receive this stream unfiltered. 23. The breathing apparatus according to claim 22, wherein the communicating part further comprises a hollow channel, a first hollow penetrating part and a second hollow penetrating part communicated with each other, and the hollow channel runs through the The first casing is arranged between an inner wall and an outer wall of the first casing, and is connected between the first hollow penetrating portion and the second hollow penetrating portion, the first hollow penetrating portion The second hollow penetrating portion is protruded on the inner wall, and the second hollow penetrating portion is protruded on the outer wall. 24. The breathing apparatus according to claim 23, wherein the end of the airflow guiding part has an air outlet hole, the other end of the airflow guiding part has an air inlet hole, and the air outlet Holes are provided on an outer wall surface of a second casing of the connecting device corresponding to the second hollow penetrating part, and when the connecting device is assembled with the main unit, the second hollow penetrating part penetrates the The air outlet hole communicates with the air outlet hole, and the air inlet hole communicates with the filter device and the breathing tube. 25. A breathing apparatus combined with a breathing tube, characterized in that the breathing apparatus comprises: A main engine, comprising a first airflow channel and a first housing, wherein a first communication part and a second communication part are provided in a shifted position in the first housing, and the first communication part and the second communication part are respectively penetrating through the first casing; a flow sensor, disposed in the host, and connected to the first communication part and the second communication part; and A connection device, which can be separately assembled between the main machine and the breathing tube, and includes a second airflow channel, a filter device, a first airflow guide part and a second airflow guide part, wherein the first airflow channel The second airflow passage communicates with the first airflow passage, the filter device is arranged in the second airflow passage, the first airflow guiding part is arranged between the filter device and the breathing tube, when the host and the connecting device When combined, the first communication part and the second communication part are respectively connected to the first airflow guiding part and the second airflow guiding part and respectively receive the airflow of the respirator to provide to the flow sensor Get the pressure difference of the airflow. 26. The breathing apparatus according to claim 25, wherein one end of the first airflow guiding part and one end of the second airflow guiding part are respectively connected to the connecting device when the main body is assembled The first communication part and the second communication part are connected, and the other end of the first airflow guiding part receives unfiltered airflow, and the other end of the second airflow guiding part receives filtered airflow. 27. The breathing apparatus according to claim 26, wherein the first communicating part further comprises a first hollow channel, a first hollow penetrating part and a second hollow penetrating part communicating with each other, the The second communicating part further includes a second hollow channel, a third hollow penetrating part and a fourth hollow penetrating part communicating with each other, and the first hollow channel and the second hollow channel pass through the first housing respectively An inner wall and an outer wall of the first housing are connected, and the first hollow channel is connected between the first hollow penetrating part and the second hollow penetrating part, and the second hollow channel is connected Between the third hollow piercing portion and the fourth hollow piercing portion, the first hollow piercing portion and the third hollow piercing portion protrude on the inner side wall respectively, and the second hollow piercing portion And the fourth hollow penetrating portion is protruded on the outer wall respectively. 28. The breathing apparatus as claimed in claim 27, wherein the end of the first airflow guiding part and the end of the second airflow guiding part have a first air outlet hole and a first air outlet respectively. Two air outlet holes, the other end of the first airflow guiding part and the other end of the second airflow guiding part respectively have a first air inlet hole and a second air inlet hole, the first air outlet The air hole and the second air outlet hole are respectively arranged on an outer wall surface of a second housing of the connecting device corresponding to the second hollow penetrating portion and the fourth hollow penetrating portion, when the connecting device When connecting with the main unit, the second hollow piercing part and the fourth hollow piercing part are respectively pierced in the first air outlet hole and the second air outlet hole to be connected with the first air outlet hole and the second air outlet hole respectively. The second air outlet hole is connected, the first air inlet hole is connected between the filter device and the breathing tube, and the second air inlet hole is connected between the filter device and the main machine.