CN102500020A - Pilot-operated type control air channel system of breathing machine - Google Patents

Pilot-operated type control air channel system of breathing machine Download PDF

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Publication number
CN102500020A
CN102500020A CN2011102960577A CN201110296057A CN102500020A CN 102500020 A CN102500020 A CN 102500020A CN 2011102960577 A CN2011102960577 A CN 2011102960577A CN 201110296057 A CN201110296057 A CN 201110296057A CN 102500020 A CN102500020 A CN 102500020A
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air
oxygen
valve
communicating
passage
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CN2011102960577A
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Chinese (zh)
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于邦仲
成其新
石露
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于邦仲
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Abstract

The invention relates to a pilot-operated type control air channel system of a breathing machine, which comprises an oxygen communicating pipe, an oxygen flow adjusting valve (NV1), an air communicating pipe, an air inlet one-way valve (DV1), an air flow adjusting valve (NV2), a Venturi device (WENTURI), an air supply control branch air channel and an air supply control electromagnetic valve (CV1). The oxygen flow adjusting valve is arranged on the oxygen communicating pipe, the air inlet one-way valve (DV1) and the air flow adjusting valve (NV2) are arranged on the air communicating pipe, an outlet end of the Venturi device (WENTURI) is communicated with a system external outlet via a main pipe, an inlet end of the Venturi device (WENTURI) is communicated with the oxygen communicating pipe, a bypass of the Venturi device (WENTURI) is communicated with the air communicating pipe, the oxygen communicating pipe is serially communicated with a pressure reduction pump (REG1) and the oxygen flow adjusting valve via air channels from outside to inside, the air supply control electromagnetic valve (CV1) is arranged on the air supply control branch air channel and is serially communicated with the air supply control air channel via an air channel, an inlet end of the air supply control electromagnetic valve is communicated with the oxygen communicating pipe in front of an air inlet end of the oxygen flow adjusting valve via an air channel, an outlet end of the air supply control electromagnetic valve is communicated with a pneumatic control end of the oxygen flow adjusting valve via an air channel, and an exhaust end of the air supply control electromagnetic valve is communicated with the Venturi device or the main pipe via an air channel. The air channel device can adjust oxygen concentration, the small-drift-diameter air supply control electromagnetic valve can be adopted, safety is increased, and the service life of the pilot-operated type control air channel system is prolonged.

Description

一种先导式控制呼吸机气路系统 One kind of pilot-control ventilator pneumatic system

技术领域 FIELD

[0001] 本发明涉及医疗电子,具体涉及一种呼吸机中能调整氧气浓度且使用寿命更长的气路系统。 [0001] The present invention relates to medical electronics, more particularly to a breathing machine can be adjusted and the oxygen concentration in the gas system longer life.

背景技术 Background technique

[0002] 呼吸机,是一种能代替、控制或改变人的正常生理呼吸,增加肺通气量,改善呼吸功能,减轻呼吸功消耗,节约心脏储备能力的装置。 [0002] The ventilator is a can replace, or change the control of human normal physiological breathing, increased pulmonary ventilation, improve the respiratory function, reduce the consumption of work of breathing, cardiac reserve capacity saving means. 它必须具备以下四个基本功能:即向肺充气、吸气向呼气转换,排出肺泡气和呼气向吸气转换,依次循环往复。 It must have the following four basic functions: namely inflatable lung inspiratory breath to the conversion, and expiratory alveolar gas is discharged to the intake conversion, the cycle sequentially. 因此对应必须有:⑴ 能提供输送气体的动力,代替人体呼吸肌的工作;⑵能产生一定的呼吸节律,包括呼吸频率和吸呼比,以代替人体呼吸中枢神经支配呼吸节律的功能;⑶能提供合适的潮气量(VT) 或分钟通气量(MV),以满足呼吸代谢的需要;⑷供给的气体最好经过加温和湿化,代替人体鼻腔功能,并能供给高于大气中所含的氧气量,以提高吸入氧气浓度,改善氧合。 Therefore there must be corresponding to: ⑴ provide power delivery gas, instead of the human respiratory muscle work; ⑵ can produce some respiratory rhythm, including respiratory rate and respiratory ratio, instead of the human central nervous system function disposable respiratory respiratory rhythm; ⑶ can provide appropriate tidal volume (VT) or minute ventilation (Music Videos), to meet the needs of respiratory metabolism; ⑷ gas supplied is preferably subjected to heating and humidification, instead of the human nasal cavity, and can be supplied above the air contained the amount of oxygen to increase the oxygen concentration of inhalation, improving oxygenation. 动力源:可用压缩气体作动力(气动)或电机作为动力(电动)呼吸频率及吸呼比亦可利用气动气控、电动电控、气动电控等类型,呼与吸气时相的切换,常于吸气时于呼吸环路内达到预定压力后切换为呼气(定压型)或吸气时达到预定容量后切换为呼气(定容型),不过现代呼吸机都兼有以上两种形式。 Power source: available compressed gas powered (pneumatic) or motor as power (electric) respiratory rate and respiratory ratio can also be controlled using pneumatic air, electric power, pneumatic power control and other types of switching and the suction phase when the call, after reaching the predetermined capacity switch is switched to the exhalation (constant pressure type) or in a constant and the suction reaches a predetermined inspiratory pressure in the expiratory breathing circuit (constant volume), but more modern ventilators are both two forms.

[0003] 目前,呼吸机采用供气控制电磁阀串联在进气流量调节阀前面的控制方式,因此供气控制电磁阀的通气口径需要足够大,使用在高压的环境中,并且须要反复开闭,这样对供气控制电磁阀的要求高,使用寿命短。 [0003] Currently, the use of the ventilator air supply control solenoid valve connected in series in front of the intake air flow rate regulating valve control, so the air supply control solenoid valve vent sufficiently large diameter, for use in high pressure environments, and the need to repeatedly open and close , so that the air supply control solenoid valve requires high, short life.

[0004] 另一方面,本申请人同时申请中国发明“呼吸流量节律控制气阀”,公开了一种流量调节阀,通过它的气动控制端气压控制主通道打开或关闭。 [0004] On the other hand, the applicant of the present invention also apply China "respiratory rhythm flow control valve", discloses a flow regulating valve, which is opened by the pneumatic control air pressure control terminal of the main channel or closing.

发明内容 SUMMARY

[0005] 本发明需要解决的技术问题是,如何提供一种先导式控制呼吸机气路系统,能增加呼吸机安全性能,提高呼吸机的使用寿命;调整氧气浓度和提高供气控制电磁阀的使用 [0005] The present invention technical problem to be solved is how to provide a pilot-controlled ventilator pneumatic system, the ventilator can increase safety, improve the life of the ventilator; adjusting the oxygen concentration and increasing the air supply control solenoid valve use

寿命ο Life ο

[0006] 本发明上述技术问题这样解决:构建一种先导式控制呼吸机气路系统,包括氧气连通管道及其上气路串通的氧气流量调节阀,还包括: [0006] The present invention thus solve the technical problem: to construct a pilot-controlled ventilator pneumatic system, including oxygen and the gas passage duct communicates collusion oxygen flow control valve, further comprising:

空气连通管道及其上由外到内气路串通的进气单向阀和空气流量调节阀; 文丘里装置,出口端通过主管道气路连通呼吸机气路系统出口,入口端气路连通所述氧气连通管道,旁路气路连通所述空气连通管道;所述氧气连通管道由外到内气路串通减压泵和所述氧气流量调节阀; And an air duct communicating the air passage from the outside to the collusion check valve and intake air flow control valve; venturi device, the outlet end of the air passage communicating the ventilator system outlet air passage through the main duct, the inlet end of the gas passage communicates communicating said oxygen conduit, the bypass air communicating passage communicating the air duct; said oxygen conduit communicating from outside to inside air passage and said depressurizing pump collusion oxygen flow control valve;

供气控制支气路及其上气路串通的供气控制电磁阀,所述供气控制电磁阀入口端气路连通所述氧气流量调节阀的进气端之前的氧气连通管道,出口端气路连通所述氧气流量调节阀的气动控制端,排气端气路连通所述文丘里装置或主管道。 The air supply passage and the air control branch air supply passage collusion control solenoid valves, the air supply conduit communicating oxygen before the oxygen gas inlet end communication with the inlet end of the control solenoid valve passage air flow rate control valve, the outlet end of the gas pneumatic control terminal of the communication passage of the oxygen gas flow rate control valve, exhaust end of air passage means communicating the venturi or the main channel.

[0007] 按照本发明提供的呼吸机气路系统,氧气连通管道、空气连通管道和主管道构成 [0007] The ventilator pneumatic system in accordance with the present invention provides, communicates oxygen conduit, an air conduit and the main conduit communicating configuration

3本气路系统的主气路。 Main air passage 3 of the air system.

[0008] 按照本发明提供的呼吸机气路系统,所述氧气连通管道和所述空气连通管道都还串通各自进气前端部位的过滤器。 [0008] The ventilator pneumatic system in accordance with the present invention provides, said communication duct and the oxygen duct communicating the air intake are also collusion respective distal end portions of the filter.

[0009] 按照本发明提供的呼吸机气路系统,所述氧气连通管道上从外到内、依次串连氧气过滤器、所述减压泵和氧气流量调节阀。 [0009] The ventilator pneumatic system in accordance with the present invention provides, from outside to inside, successively series filter oxygen conduit communicating said oxygen, the oxygen pressure pump and the flow regulating valve.

[0010] 按照本发明提供的呼吸机气路系统,所述使用者接口通过外部管道连通患者呼吸阀。 [0010] ventilator pneumatic system in accordance with the present invention provides a user interface to an external communication conduit valve patient breathing.

[0011] 按照本发明提供的呼吸机气路系统,还包括通过安全支气路与所述主管道连通的安全阀。 [0011] ventilator pneumatic system in accordance with the present invention provides, further comprising a safety valve communicating through the branched air passage main duct.

[0012] 按照本发明提供的呼吸机气路系统,还包括通过自由呼吸支气路与所述主管道连通的自由呼吸阀。 [0012] The ventilator pneumatic system in accordance with the present invention provides, further comprising a valve in communication breathe freely breathe through the branched air passage and the main duct.

[0013] 按照本发明提供的呼吸机气路系统,另外串通在主管道上的内置流量传感器也属于主气路的一部分,广义地说,还包括气路上的各种传感器。 [0013] ventilator pneumatic system in accordance with the present invention provides, in a further main pipe collusion built-in flow sensor is also part of the primary air passage, broadly speaking, further comprising a gas path of the various sensors.

[0014] 本发明提供的呼吸机气路系统,采用了文丘里装置、小口径供气控制电磁阀,结合处理器、控制电路和程序以及气路上的各个传感器,能根据需要调整氧气浓度、精确控制呼吸节律等,提高产品整体使用寿命和工作稳定性,相对现有技术具有以下优势: [0014] The ventilator pneumatic system provided by the invention, using a venturi device, the small-diameter gas solenoid valve is controlled in conjunction with the processor, the program control circuit, and each sensor path and the gas, the oxygen concentration can be adjusted as necessary, the precise control breathing rhythm, etc., to improve the overall stability of the product life and work, has the following advantages over the prior art:

1、采用先导阀控制方式。 1, using the pilot valve control. 供气控制电磁阀为流量调节阀的先导控制阀,改变以往供气控制电磁阀与流量调节阀串联,供气控制电磁阀作为开关阀的控制方式。 Air supply control solenoid valve as a pilot valve controlling the flow control valve, a conventional air supply control solenoid valve to change the flow regulating valve in series, the air supply control solenoid valve as the control mode switch. 供气控制电磁阀只通过控制气,不需要通过主流量气体,其通径要求很小,供气控制电磁阀的体积很小。 Air supply control solenoid valve controlled by only air, without going through the main flow of gas, which requires a very small diameter, small volume of the air supply control solenoid valve. 从而呼吸流量节律控制部分可以合二为一,整体体积非常小。 Respiratory flow thereby controlling portion rhythm could be combined in the overall volume is very small. 使得供气控制电磁阀性能更加稳定,控制更加的精确,寿命更长; Air supply control solenoid valve such that more stable, more accurate control, longer life;

2、采用文丘里装置。 2, the use of venturi means. 能有效降低氧浓度,通过调节流量调节阀的通径,能实现呼吸机的氧浓度连续可调,满足使用者具体需要。 Can effectively reduce the oxygen concentration by regulating the flow path control valve, the oxygen concentration can be achieved continuously adjustable ventilator, to meet the specific needs of the user. 同时采用该装置,通过吸入空气,减少气瓶的耗氧量,增加气瓶的使用时间。 While using the apparatus, through the intake air, reducing the amount of oxygen cylinders, cylinders increased usage time.

附图说明 BRIEF DESCRIPTION

[0015] 下面结合附图和具体实施例进一步对本发明进行详细说明。 Drawings and specific embodiments of the present invention will be further described in detail [0015] below in conjunction.

[0016] 图1为本发明具体实施例气路结构示意图; 图2为图1所示呼吸机中控制程序流程示意图。 [0016] FIG. 1 is a schematic structural embodiment of the gas passage particular embodiment of the present invention; FIG. 2 is a schematic view of the ventilator shown in Figure 1 to control program flow.

[0017] 其中附图标记: [0017] wherein reference numerals:

Fl-氧气过滤器,PQl-高压压力传感器,REGl-减压阀,CVl-供气控制电磁阀,NVl-氧气流量调节阀,WENTURI-文丘里装置,FQl-内置流量传感器,SVl-安全阀,OS-氧电池, DVl-单向阀,PQ2-第一低压压力传感器,FQ2-外置流量传感器,F2-空气过滤器,EVl-自由呼气阀,NV2-空气流量调节阀,EMS-患者呼吸阀,PQ3-第二低压压力传感器。 Fl- oxygen filter, PQl- high pressure sensor, REGl- relief valve, CVl- air supply control solenoid valve, NVl- oxygen flow control valve, WENTURI- venturi device, FQl- built-in flow sensor, SVl- valve, OS- oxygen battery, DVl- check valve, PQ2- a first low pressure sensor, FQ2- external flow sensor, F2-air filter, consisting of Evl-exhalation valve, NV2- air flow regulating valve, the patient's breath EMS- valve, PQ3- second low pressure sensor.

具体实施方式 Detailed ways

[0018] 首先,说明本发明气路关键: [0018] First, the air passage of the present invention is critical:

㈠文丘里装置及辅助管道结构,能够从旁路吸入空气,实现空气和氧气的混合,降低氧浓度;(二)由供气控制电磁阀CVl控制的氧气流量调节阀NV1,采用非串连结构,供气控制电磁阀CVl的内部通径可很小。 (I) a venturi device and an auxiliary duct structure, the air can be sucked from bypass to achieve the mixed air and oxygen, the oxygen concentration; (b) from the oxygen gas feed control solenoid valve controlled flow regulating valve CVl NV1, non-tandem structure air supply control solenoid valve CVl internal diameter may be small.

[0019] 第二,说明本发明具体实施例的气路系统结构: [0019] Second, the structure of the airway system described particular embodiments of the present invention:

本发明具体实施例的呼吸机气路系统和其上的传感器,结构如图1所示,包括主气路及其上分支气路,主气路包括二入口、一出口,分别对应氧气连通管道、空气连通管道和主管道,三个管道通过文丘里装置WENTURI连通,空气连通管道为旁路,该气路系统具体说明如下: Sensor ventilator and the airway system on which embodiments of the present invention, the particular embodiment, shown in Figure 1, comprises a main air passage and the branched air passage, the main air inlet passage comprises two, an outlet, respectively, corresponding to oxygen conduit communicating , and an air duct communicating the main conduit, through three ducts communicating WENTURI venturi device, an air bypass duct communicating the air passage system is specifically described as follows:

文丘里装置WENTURI,能够从旁路吸入空气,实现空气和氧气的混合,降低氧浓度; 氧气连通管道,可连接氧气瓶,接入高压氧气、依次经氧气过滤器F1、减压泵REGl和氧气流量调节阀NVl进入文丘里装置TONTURI,吸入空气连通管道中空气;氧气流量调节阀NVl能通过手动调节氧气的流速,控制呼吸机系统的潮气量的大小;氧气连通管道上还设置高压压力传感器PQl。 Venturi device WENTURI, air can be sucked from bypass to achieve the mixed air and oxygen, the oxygen concentration; oxygen conduit communicating, can be connected to an oxygen bottle, access high-pressure oxygen, followed by an oxygen filter F1, and the decompression pump oxygen REGl flow rate adjusting valve NVl enters the venturi device TONTURI, the intake air communication with air in the duct; an oxygen flow regulating valve NVl by manually adjusting the oxygen flow rate, the control tidal volume of the ventilator system size; also provided a high-pressure sensor PQl the oxygen gas communication pipe .

[0020] 供气控制支气路和供气控制电磁阀CV1,氧气流量调节阀NVl由供气控制电磁阀CVl控制,供气控制电磁阀CVl入口端连通位于所述进气流量调节阀NVl进气端之前的氧气连通管道和氧气流量调节阀NVl气动控制端,开启信号控制供气控制电磁阀CVl动作接通气源从其出口端打开氧气流量调节阀NV1,呼吸机系统给使用者供气;关闭信号控制供气控制电磁阀CVl换位(断开入口端气源、出口端切换连通至排气端),此时氧气流量调节阀NVl关闭,呼吸机系统停止供气,同时使用者呼气。 [0020] The air intake control branch passage and the air supply control solenoid valve CV1, by the oxygen gas flow rate control valve control solenoid valve NVl CVl control, the air supply control solenoid valve located CVl inlet end communicating the intake flow rate control valve into NVl before oxygen gas communication pipe end and the oxygen flow regulating valve NVl pneumatic control terminal, the control ON signal supply control operation of the solenoid valve is turned on CVl an oxygen gas supply flow rate adjusting valve NV1 opens its outlet end, the breathing gas supply system to the user ; off the air supply control solenoid valve control signal CVl transposition (open air inlet end, the outlet end to the exhaust end of the communication handover), this time NVl oxygen flow regulating valve is closed to stop gas supply system, the ventilator, while the user call gas.

[0021] 空气连通管道,接入外部空气,依次经空气过滤器F2、进气单向阀DVl和空气流量调节阀NV2进入文丘里装置TONTURI ;进气单向阀DVl保障空气由此管道进入呼吸机,而任何情况下系统的供气不由此管道泄露至空气中。 [0021] communicating air duct, access to external air, successively through the filter F2 of the air, and the intake check valve DVl air into the flow regulating valve NV2 venturi device TONTURI; DVl intake check valve whereby the air duct into the respiratory protection machine, while the gas supply system without any leakage into the air duct thereby.

[0022] 主管道,其上串通有内置流量传感器FQ1,出口通过连通管道和患者呼吸阀EMS连接使用者,主管道上还设置氧电池OS和第一低压压力传感器PQ2,其中:氧电池OS能够检测出呼吸机系统提供给使用者的氧气百分比,将检测的信号提供给软件系统;内置低压压力传感器PQ2检测病人吸气的实际压力,将信号提供给软件系统。 [0022] the main conduit, the flow sensor FQ1 collusion with built thereon, an outlet pipe connected to the user through the communication valve and the patient respiratory EMS, the main pipe is also provided a first oxygen sensor OS and PQ2 of the low pressure sensor, wherein: the oxygen sensor is capable of detecting OS a ventilator system provided to the user of the percentage of oxygen, the detected signal to the software system; PQ2 built low pressure sensor detects the actual pressure of the patient intake, supplies the signal to the software system.

[0023] 安全支气路和安全阀SV1,连通主管道,安全阀SVl实现呼吸机气路系统供给使用者的压力不超过安全阀的设定值,保障吸气安全; [0023] Security branch manifold and valve SV1, the main conduit communicating, for system supply valve SVl user ventilator airway pressure does not exceed a set value of a safety valve to protect the safety suction;

自由呼吸支气路和自由呼气阀EVl,连通主管道,自由呼气阀EVl —种常开阀,由电信号同步控制开或关,关闭时能保障呼吸机气路的供气严密,开启时能释放气道中的剩余气压,保障病人呼气的顺畅。 Free breathing gas passage and branch consisting exhalation valve EVI, communicates the main duct, consisting of an exhalation valve EVl - kind of a normally open valve, the electrical signal from the synchronous control on or off, to protect the ventilator airway gas tight closed, open when the residual pressure release in the airway, smooth to protect the patient exhales. 在呼吸机停止工作等第一故障下,病人能从此阀吸人空气,保障病人的不被窒息。 In the first failure stopped the ventilator, etc., from human patient can suck an air valve, to protect the patient is not suffocated.

[0024] 本发明具体实施例的呼吸机气路系统还包括: [0024] The ventilator airway system embodiment of the present invention further comprises:

患者呼吸阀EMS,内部装有呼吸模瓣,使用者通过吸呼吸机输出的氧气,而使用者呼气也由它直接流向大气,保障呼吸机不被污染; Patient breathing valve EMS, internal mold halves with breathing, the ventilator oxygen storage by the user output, and the user can exhale air flows directly from it, to protect the ventilator is not contaminated;

外置流量传感器FQ2,安装在靠近使用者端,比内置流量传感器更稳定更精确地检测流 FQ2 external flow sensor, mounted near the end user, more stable than the built-in flow sensor more accurately detect the flow

量; the amount;

第二低压压力传感器PQ3,靠近病人端检测,检测精度更高。 PQ3 of the second low pressure sensor, of the detector near the patient, a higher detection accuracy.

[0025] 本气路系统的二通供气控制电磁阀CVl包括入口端、出口端和排气端,通过电信号控制切换入口端与出口端连通或者出口端与排气端连通,排气时气体从出口端流向排气端。 When [0025] the two-gas system of the present supply control solenoid valve CVl includes an inlet end, an outlet end and a discharge end, by an electrical signal controlling switching in communication with the outlet end or the inlet end and the outlet end of the discharge end in communication, the exhaust the gas from the outlet end to the exhaust end.

[0026] 最后,结合与气路系统配合的处理器内部控制程序说明本发明具体实施例的工作方法和原理,如图2所示,该控制程序是多任务并行方式运行,具体包括以下步骤: [0026] Finally, the gas system with a processor internal control procedures and methods described working principle of specific embodiments of the present invention, shown in Figure 2, the control program is a multi-tasking operating mode, includes the following steps:

根据呼吸机系统的设置,系统信号控制供气控制电磁阀CVl动作控制氧气流量调节阀NVl的开启和闭合时间,实现病人所需要的呼吸频率和吸呼比; The setting of the ventilator system, the control system signals the air supply control solenoid valve operation control CVl NVl oxygen flow rate adjusting valve opening and closing times, required by the patient to achieve the respiratory rate and respiratory ratio;

调节氧气流量调节阀NV1,实现病人所需要的吸气流量调节。 Adjusting the oxygen flow rate adjusting valve NV1, the patient to achieve desired suction flow regulator. 流量传感器FQl实时监测系统的流量,将数据反馈给软件系统。 Real-time traffic monitoring system flow sensor FQl, the data back to the software system.

[0027] 另,图2中“根据目标条件改变阀门状态”的对应操作有:1 :根据呼吸设置参数改变阀门状态;2 :根据呼吸监测参数调节阀门状态实现相应目标值(如指定的Peep压力)。 [0027] Also, FIG. 2 "according to the target valve state change condition" corresponding to the operation are: 1: The breathing valve state change setup parameters; 2: adjusting valve state to achieve the appropriate value (as specified pressure Peep The respiratory monitoring parameters ).

[0028] 以上所述仅为本发明的较佳实施例,凡依本发明权利要求范围所做的均等变化与修饰,皆应属本发明权利要求的涵盖范围。 [0028] The foregoing is only preferred embodiments of the present invention, any modifications and alterations made under this scope of the claims of the invention, also belong to the scope of the appended claims.

Claims (5)

1. 一种先导式控制呼吸机气路系统,包括氧气连通管道及其上气路串通的氧气流量调节阀(NVl ),其特征在于,还包括:空气连通管道及其上由外到内气路串通的进气单向阀(DVl)和空气流量调节阀(NV2);文丘里装置(WENTURI),出口端通过主管道气路连通呼吸机气路系统的外部出口,入口端气路连通所述氧气连通管道,旁路气路连通所述空气连通管道;所述氧气连通管道由外到内气路串通减压泵(REGl)和所述氧气流量调节阀(NVl);供气控制支气路及其上气路串通的供气控制电磁阀(CV1),所述供气控制电磁阀入口端气路连通所述氧气流量调节阀(NVl)的进气端之前的氧气连通管道,出口端气路连通所述氧气流量调节阀(NVl)的气动控制端,排气端气路连通所述文丘里装置(WENTURI)或主管道。 A pilot-controlled ventilator pneumatic system, including oxygen and the oxygen gas flow communication with the gas passage duct collusion regulating valve (NVL), characterized by, further comprising: an air duct and communicating from the outside to the inside air Road collusion intake check valve (DVl) and an air flow regulating valve (NV2); venturi device (WENTURI), an outlet end communicating outside the outlet ventilator airway system by a main duct air passage, the inlet end of the gas passage communicates the communicating said oxygen conduit, the bypass air communicating passage communicating the air duct; said oxygen conduit communicating from outside to inside air passage collusion decompression pump (REGL) and the oxygen gas flow rate adjusting valve (NVL); branch gas supply control and the air passage of the air supply passage collusion control solenoid valve (CVl), the air supply control solenoid valve passage communicating the inlet end of the gas flow regulating said oxygen conduit communicating the inlet end before the oxygen valve (NVL), the exit end pneumatic control terminal air passage communicating said oxygen flow rate adjusting valve (NVL), the end of the exhaust gas passage means communicating the venturi (WENTURI) or the main channel.
2.根据权利要求1所述呼吸机气路系统,其特征在于,所述氧气连通管道和所述空气连通管道都还气路串通各自进气前段部位的过滤器。 1 according to the ventilator pneumatic system as claimed in claim, wherein said oxygen conduit communicating duct and the air communication passage collusion are each further air inlet portion of the pre-stage filter.
3.根据权利要求1所述呼吸机气路系统,其特征在于,所述外部出口通过外部管道气路连通患者呼吸阀(EMS)。 1 3. The ventilator pneumatic system according to claim, wherein said external outlet valve communicates the patient's breathing (EMS) through the external air passage duct.
4.根据权利要求1所述呼吸机气路系统,其特征在于,还包括通过安全支气路与所述主管道气路连通的安全阀(SVl)。 According to claim 1 to the ventilator pneumatic system, characterized in that, further comprising a safety valve (SVL) in communication through a secure channel and the branch gas main duct air passage.
5.根据权利要求1所述呼吸机气路系统,其特征在于,还包括通过自由呼吸支气路与所述主管道气路连通的自由呼吸阀(EV1)。 1 according to the ventilator pneumatic system as claimed in claim, characterized in that, further comprising a free breathing valve (EV1) communicating through free breathing gas path branched from the main duct air passage.
CN2011102960577A 2011-09-28 2011-09-28 Pilot-operated type control air channel system of breathing machine CN102500020A (en)

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