WO2013107253A1 - 采样泵及气体分析仪 - Google Patents

采样泵及气体分析仪 Download PDF

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Publication number
WO2013107253A1
WO2013107253A1 PCT/CN2012/087485 CN2012087485W WO2013107253A1 WO 2013107253 A1 WO2013107253 A1 WO 2013107253A1 CN 2012087485 W CN2012087485 W CN 2012087485W WO 2013107253 A1 WO2013107253 A1 WO 2013107253A1
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WIPO (PCT)
Prior art keywords
reciprocating
same
reciprocating pumps
sampling pump
pumps
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2012/087485
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English (en)
French (fr)
Inventor
周卫东
刘中华
刘云峰
岑建
陈恒
黄光齐
盖布里埃尔松⋅约肯姆⋅卡尔
韦纳⋅约翰·尼尔斯·厄恩斯特
斯韦德米尔⋅彼得·埃里克·阿克塞尔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Mindray Bio Medical Electronics Co Ltd
Original Assignee
Shenzhen Mindray Bio Medical Electronics Co Ltd
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Application filed by Shenzhen Mindray Bio Medical Electronics Co Ltd filed Critical Shenzhen Mindray Bio Medical Electronics Co Ltd
Publication of WO2013107253A1 publication Critical patent/WO2013107253A1/zh
Priority to US14/334,429 priority Critical patent/US10656132B2/en
Anticipated expiration legal-status Critical
Priority to US16/878,243 priority patent/US11287410B2/en
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0073—Control unit therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems
    • F04B23/04—Combinations of two or more pumps
    • F04B23/06—Combinations of two or more pumps the pumps being all of reciprocating positive-displacement type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B27/12—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders having plural sets of cylinders or pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B41/00—Pumping installations or systems specially adapted for elastic fluids
    • F04B41/06—Combinations of two or more pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/001—Noise damping
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/24—Suction devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/483—Physical analysis of biological material
    • G01N33/497—Physical analysis of biological material of gaseous biological material, e.g. breath
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/06—Pumps having fluid drive
    • F04B43/073—Pumps having fluid drive the actuating fluid being controlled by at least one valve
    • F04B43/0736—Pumps having fluid drive the actuating fluid being controlled by at least one valve with two or more pumping chambers in parallel

Definitions

  • the invention relates to the field of medical respiratory monitoring, in particular to a sampling pump and a gas analyzer using the sampling pump.
  • the sampling pump is widely used in respiratory monitoring medical instruments or modules. Its function is to collect the sample gas of the patient's breathing circuit and send it to the respiratory monitoring instrument, so that it can monitor the composition of the patient's exhaled gas in real time, so that the doctor can judge the patient's vital signs.
  • the gas sensor probe for detecting gas in the monitoring instrument is a precision component, and is easily disturbed by vibration during operation to reduce the measurement accuracy.
  • the sampling pump is the main source of vibration in the monitoring module.
  • the gas sensor is also sensitive to the flow fluctuation of the monitored gas. If the flow rate of the flow sensor fluctuates greatly, the measurement noise will be introduced, which will affect the measurement accuracy. Therefore, the sampling pump is required to provide a relatively stable sampling flow.
  • a single rotary motor diaphragm sampling pump is widely used in the respiratory monitoring instrument to sample the instrument. Due to the limitation of the working principle of the diaphragm pump, the sampling flow always has large fluctuations, and there is also a certain vibration. However, a single linear reciprocating pump is generally not considered for use in a respiratory monitoring instrument due to the greater vibration caused.
  • the present invention provides a sampling pump for transporting fluids to reduce vibration.
  • the invention also provides a gas analyzer for analyzing and detecting gas using the above sampling pump.
  • a sampling pump comprising:
  • At least one set of reciprocating pump sets each set of said reciprocating pump set comprising two reciprocating pumps;
  • a control system for outputting a drive signal for controlling reciprocating pumping of the reciprocating pump the control system being configured to output a drive signal having opposite directions of impact at the same time by the two reciprocating pumps in the same group.
  • a gas analyzer comprising:
  • a gas measurement module for detecting and analyzing gases
  • sampling pump providing a gas to be detected for the gas measuring module.
  • Figure 1 is a schematic view showing the position of two linear reciprocating pumps in an embodiment of the present invention
  • FIG. 2 is a schematic view showing the orientation of two linear reciprocating pumps in one embodiment of the present invention
  • Figure 3 is a schematic view showing the orientation of two linear reciprocating pumps in another embodiment of the present invention.
  • FIG. 5 is a schematic structural view of another embodiment of the present invention.
  • the sampling pump includes at least one set of reciprocating pump sets, each set of the reciprocating pump set includes two reciprocating pumps, and the two reciprocating pumps are fixedly mounted on the same straight line.
  • the reciprocating pump may be a reciprocating pump of a rotating electric machine driven by a rotating electric machine, or a linear reciprocating pump driven by a driving device capable of directly outputting a linear reciprocating motion, such as a voice coil linear motor or other outputable linear reciprocating pump.
  • a driving device capable of directly outputting a linear reciprocating motion
  • a voice coil linear motor or other outputable linear reciprocating pump such as a voice coil linear motor or other outputable linear reciprocating pump.
  • the two reciprocating fixed sets in the same group of reciprocating pump sets are installed on the same straight line, so the impact force generated by the single reciprocating pump in the work of the fluid will be transmitted and applied to the other reciprocating pump, and the control system is adjusted by the control system.
  • the two reciprocating pumps in the same group form opposite impact directions at the same time, so that the impact forces generated by the two reciprocating pumps at the same time are mutually offset, thereby canceling each other or mostly canceling, and the reciprocating pump set is operated due to
  • the vibrations caused by the impact force of the reciprocating pump can also cancel each other, thereby ensuring smooth operation of the reciprocating pump set and the sampling pump.
  • the fluid can be a gas, a liquid or a gas-liquid mixture.
  • the two reciprocating pumps of the same group are rigidly fixedly coupled to each other to conduct impact and vibration.
  • the rigid fixed connection comprises a direct rigid fixed connection between two linear reciprocating pumps, forming an integral structure, and may also comprise a third-party connecting carrier, such as a connecting plate or a base, etc., the two reciprocating pumps are rigidly fixed and installed in a third party Connected to the carrier.
  • the two reciprocating pumps in the same group of reciprocating pump sets can be arranged in a front-rear manner.
  • the two reciprocating pumps of the same group are arranged one behind the other and on the same straight line, so that the impact force and the vibration generated by the two linear reciprocating pumps are kept on the same line and interact with each other, please refer to Figure 1, A is the front linear reciprocating pump, B is the rear linear reciprocating pump, A, B are set on the same line, the arrow in the figure shows the direction of shock and vibration generated by the linear reciprocating pump, when the control system When control A produces an impact to the left or right, control B also produces a rightward or leftward impact, and the impact interactions between the two ultimately cancel each other, substantially cancel or partially cancel.
  • the two reciprocating pumps in the same group have opposite impact directions at the same time, and the control system can respectively send a coordinated driving signal to the two reciprocating pumps to control the pumping timing.
  • the drive signal can be a current signal, a voltage signal, or other drive signal.
  • the control system can emit the same amplitude and the same phase for the two linear reciprocating pumps in the same group.
  • the opposite drive signal is used to drive the drive in the two linear reciprocating pumps to operate in coordination.
  • the two linear reciprocating pumps of the same group are rigidly fixed on the same straight line, and the mounting orientation is the same, and the impact forces formed by the two linear reciprocating pumps during the pumping process may be the same or substantially the same, It may be that there is a certain difference between the impact forces formed by the two linear reciprocating pumps, but the difference is within a prescribed range (the specified range can be artificially set according to actual conditions).
  • the orientation of the reciprocating pump refers to the direction of motion of the internal drive device when the reciprocating pump presses out the fluid. Please refer to FIG. 2, where the arrows indicate the direction of motion of the internal drive device when the two linear reciprocating pumps press the fluid. In this example, the direction indicated by the arrow is the orientation of the linear reciprocating pump.
  • the direction of movement of the internal drive output is opposite to the direction, and the orientations of the two linear reciprocating pumps shown in FIG. 2 are the same.
  • the impact forces of the two linear reciprocating pumps are the same or substantially the same, and the amplitudes of the driving signals are also the same, so that the two linear reciprocating pumps are generated by the movement when the fluid is pumped or the fluid is driven under the control of the driving signal.
  • the impact forces are also the same or substantially the same.
  • the control system respectively sends driving signals in alternating directions to the two linear reciprocating pumps, that is, respectively, two linear reciprocating pumps have the same amplitude, but the phase difference is 180°, and the two linear reciprocating pumps are driven respectively.
  • FIG. 3 Please refer to FIG. 3.
  • the arrows in the figure respectively indicate the direction of motion of the internal driving device when the two linear reciprocating pumps press the fluid, and the direction indicated by the arrow is the linear reciprocating pump.
  • the linear reciprocating pump draws the fluid in the direction in which the internal drive output is opposite to the direction, that is, the orientation of the two linear reciprocating pumps shown in FIG.
  • the control system respectively sends the same driving signals (ie, the same amplitude and the same phase) to the two linear reciprocating pumps, so that the pumping timings of the two linear reciprocating pumps are the same, that is, when one linear reciprocating pump draws the fluid, the other linear reciprocating
  • the pump is also pumping fluid.
  • the output member also produces a reciprocating impact during the work of the rotary motor drive output (such as a plunger or piston).
  • the control system may respectively output driving signals to the two reciprocating pumps of the rotating electric machine to control the rotation timing of the internal rotating electric machine to adjust the timing of the reciprocating linear motion of the output members in the reciprocating pump.
  • the reciprocating pump set may also include a linear reciprocating pump and a rotary electric motor reciprocating pump.
  • the output channels of the two reciprocating pumps in the same group can also be merged together to form an integrated merged output channel, the merged output channel and the same group of two
  • the output channels of the reciprocating pumps are connected to serve the purpose of the overall output of the fluid.
  • two linear reciprocating pumps are arranged in the same direction, when the output channels are integrated to form an integral output channel, when one linear reciprocating pump draws fluid, another linear reciprocating pump presses out the fluid, and the output fluid flow between the two reciprocating pumps is formed.
  • Complementary peaks and valleys can also stabilize flow and eliminate fluctuations.
  • the fluid output device embodiment may also include a plurality of reciprocating pump sets, which may be independently arranged, or may be rigidly fixedly connected to each other, or may be rigidly fixedly connected between the partial reciprocating pump sets, and the other part may be reciprocated.
  • the pump set is set independently.
  • sampling pump is described below by taking a fluid as a gas and a reciprocating pump as a linear reciprocating pump as an example:
  • the sampling pump includes a control system (the control system is not shown), two linear reciprocating pumps 11, 12 and a connecting plate 2, and the linear reciprocating pumps 11, 12 have an intake nozzle 112 as a fluid inlet. , 122 and the air outlets 111, 121 as the fluid exit. Both linear reciprocating pumps 11, 12 are rigidly fixed to the web 2 such that the two linear reciprocating pumps 11, 12 and the web 2 form a unitary structure.
  • the two linear reciprocating pumps 11, 12 are oriented in the same direction, and the control system can coordinate the working timings of the two linear reciprocating pumps 11, 12 by driving signals, that is, respectively giving the two linear reciprocating pumps 11, 12 an amplitude.
  • driving signals that is, respectively giving the two linear reciprocating pumps 11, 12 an amplitude.
  • the same, but phase-shifted, 180° drive signals cause the motor mover directions of the two linear reciprocating pumps 11, 12 to always be opposite at the same time, and the impact vibrations of the two linear reciprocating pumps 11, 12 in the opposite direction are just right. They are offset or largely offset by the connecting plates 2.
  • outlets 111, 121 of the two linear reciprocating pumps can be brought together to form an integral merged output passage. Since the pumping actions of the two linear reciprocating pumps 11, 12 are alternately performed, the alternating flow streams of the respective outputs are connected in parallel, just in the state of superposition of peaks and troughs, maintaining a stable flow rate during fluid transportation, and greatly eliminating fluctuations of the fluid. Play a steady flow.
  • the second embodiment of the gas delivery device differs from the first embodiment in that the connecting plates are omitted, and the two linear reciprocating pumps 11, 12 are directly rigidly fixedly connected in the axial direction to form an integral structure. .
  • the gas analyzer includes any one of the above sampling pumps and a gas measuring module, and the gas measuring module is used for inspecting and analyzing the gas, and the gas measuring module can be The detection and analysis of gases is carried out using existing or future technical solutions.
  • a sampling pump is used to deliver the gas to be detected and analyzed from the gas source to the gas measuring module.
  • the embodiment further includes a base 3 and a gas path (not shown) for fixedly mounting the reciprocating pump set, the gas path being fixedly mounted on the base 3 or designed inside the base 3, the gas
  • the road includes two sets of intake ports 32, 34 and two sets of outlet interfaces 31, 33, wherein the two sets of outlet ports 31, 33 communicate with each other to form a large air outlet for collecting the outputs of the two linear reciprocating pumps 11, 12.
  • the gas, while the two intake ports 32, 34 are also interconnected internally. Since the gas sensor in the gas analyzer is a precision component, it is not only susceptible to external vibration interference, but also sensitive to the flow fluctuation of the monitored gas. If the flow rate of the flow sensor fluctuates greatly, measurement noise is also introduced, which affects the measurement. Precision.
  • the sampling pump in this embodiment adopts alternate pumping driving timings, has a function of stabilizing the output airflow, can greatly eliminate the fluctuation of the overall airflow of the airway, and further improves the measurement accuracy of the gas sensor.
  • the present invention may have some modified embodiments.
  • two of the reciprocating pumps may not be disposed on the same straight line, as long as the impact directions of the two are opposite, that is, to a certain extent. The purpose of damping is achieved.

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Abstract

一种采样泵及应用该采样泵的气体分析仪，该采样泵包括至少一组往复泵组（11，12），每组所述往复泵组（11，12）包括两个往复泵（11，12）；控制系统，用于输出控制往复泵往复抽打的驱动信号，所述控制系统被配置为输出使同组内的两个往复泵（11，12）在同一时刻形成冲击方向相反的驱动信号。所述采样泵和分析仪通过使同组内的两个往复泵在同一时刻形成的冲击力方向相反，抵消往复泵因移动而产生的冲击力，减小震动。

Description

采样泵及气体分析仪
【技术领域】
本发明涉及医疗呼吸监护领域，具体涉及一种采样泵及应用该采样泵的气体分析仪。
【背景技术】
采样泵广泛应用于呼吸监护类医疗仪器或模块中，其作用是采集病人呼吸回路的样本气体送到呼吸监测仪器中，以便供其实时监测病人呼出气体的成分，便于医生判断病人生命体征状况。监测仪器中用于检测气体的气体传感器探头属于精密部件，工作时容易受震动干扰而降低测量精度。而通常情况下，采样泵是监测模块中主要的震动源。同时，气体传感器对于被监测气体的流量波动也较敏感，如果经过流量传感器的流量有较大波动，也会引入测量噪声，影响测量精度，因此要求采样泵能够提供较为稳定的采样流动。
目前呼吸监护仪器中广泛采用的是单个旋转电机膜片采样泵来为仪器采样，膜片泵由于其工作原理的限制，采样流量总是存在较大波动，同时也存在一定震动。而单个线性往复泵由于引起的震动更大，因而一般情况下不被考虑运用在呼吸监护仪器中。
【发明内容】
本发明提供了一种采样泵，用于输送流体，减少震动。
本发明还提供了一种气体分析仪，应用上述采样泵对气体进行分析和检测。
根据本发明的一方面，提供一种采样泵,包括：
至少一组往复泵组，每组所述往复泵组包括两个往复泵；
控制系统，用于输出控制往复泵往复抽打的驱动信号，所述控制系统被配置为输出使同组内的两个往复泵在同一时刻形成冲击方向相反的驱动信号。
根据本发明的另一方面，提供一种气体分析仪，包括：
气体测量模块，用于对气体进行检测和分析；
以及上述采样泵，所述采样泵为气体测量模块提供被检测气体。
【附图说明】
图1为本发明一种实施例中的两个线性往复泵的位置示意图；
图2为本发明一种实施例中的两个线性往复泵的朝向示意图；
图3为本发明另一种实施例中的两个线性往复泵的朝向示意图；
图4为本发明一种实施例中结构示意图；
图5为本发明另一种实施例中结构示意图。
【具体实施方式】
下面通过具体实施方式结合附图对本发明作进一步详细说明。
在本申请实施例中，采样泵包括至少一组往复泵组，每组所述往复泵组包括两个往复泵，两个所述往复泵固定安装在同一条直线上。通过设计控制往复泵往复抽打的驱动信号，使同组内的两个往复泵在同一时刻形成的冲击力方向相反，抵消往复泵因移动而产生的冲击力，减小震动。
往复泵可以是采用旋转电机驱动的旋转电机往复泵，也可以是采用可直接输出直线往复运动的驱动装置驱动的线性往复泵，该线性往复泵比如是采用音圈直线电机或者其他可输出直线往复运动的驱动装置的膜片泵等。同组往复泵组内的两个往复固定安装在同一条直线上，因此单个往复泵在对流体做功时所产生的冲击力将传递并作用到另一个往复泵上，而通过控制系统的控制调整，同组内的两个往复泵在同一时刻所形成的冲击方向相反，使得该两个往复泵在同一时刻产生的冲击力相互对冲，从而彼此抵消或者大部分抵消，而往复泵组运行时由于往复泵的冲击力所引起的震动也可以相互抵消，进而可保证该往复泵组和采样泵平稳运转。流体可以是气体、液体或者气液混合物。
一种实施例中，同组的两个往复泵相互之间刚性固定连接，以便传导冲击力和震动。该刚性固定连接包括两个线性往复泵之间直接刚性固定连接，形成一体结构，还可以包括一个第三方连接载体，如连接板或基座等，该两个往复泵都刚性固定安装在第三方连接载体上。
为了能够使各自产生的冲击力至少部分相互抵消，同组往复泵组内的两个往复泵可采用前后设置的方式。在一种实施例中，同组的两个往复泵前后设置，且位于同一直线上，以便于两个线性往复泵所产生的冲击力和震动保持在同一直线上，并且彼此相互作用，请参考图1，图中A为在前线性往复泵，B为在后线性往复泵，A、B设置在同一直线上，图中箭头所示为线性往复泵所产生的冲击和震动方向，当控制系统控制A产生向左或向右的冲击时，亦控制B对应产生向右或向左的冲击，两者产生的冲击相互作用，最终彼此抵消、基本抵消或部分抵消。
而为了控制往复泵的抽打时序，使同组内的两个往复泵在同一时刻所形成的冲击方向相反，控制系统可分别对两个往复泵发出相互协调配合的驱动信号，控制其抽打时序。该驱动信号可以是电流信号，还可以是电压信号，或者其他驱动信号。
以往复泵组内均为线性往复泵为例，由于线性往复泵内部直接由可输出直线往复运动的驱动装置驱动，控制系统可对同组中的两个线性往复泵发出幅度相同，相位相同或相反的驱动信号，以驱动两个线性往复泵内的驱动装置协调运行。
在一种实施例中，同组的两个线性往复泵刚性固定在同一直线上，且安装朝向相同，两个线性往复泵的在抽打过程中所形成的冲击力大小可以相同或基本相同，也可以是两个线性往复泵所形成的冲击力之间具有一定的差值，但差值在规定的范围内（该规定范围可根据实际情况进行人为设定）。往复泵的朝向是指往复泵压出流体时其内部驱动装置所输出的运动方向，请参考图2，图中箭头分别表示两个线性往复泵压出流体时其内部驱动装置所输出的运动方向，本例设定箭头所示方向为线性往复泵的朝向，线性往复泵抽取流体时其内部驱动装置输出的运动方向为与朝向相反的方向，图2所示两个线性往复泵的朝向相同。本实施例中，两个线性往复泵的冲击力设计相同或基本相同，其驱动信号的幅度也相同，因此两个线性往复泵在驱动信号的控制下抽取流体或打出流体时因运动而产生的冲击力也相同或基本相同。本例中，控制系统分别对两个线性往复泵发出交替方向的驱动信号，即分别给两个线性往复泵一个幅值相同，但相位相差180°的驱动信号，两个线性往复泵在各自驱动信号的控制下，当一个往复泵的驱动装置向左运动时，而另一个往复泵的驱动装置则向右运动，即当一个线性往复泵抽取流体时，另一个线性往复泵正在压出流体。反之，当一个往复泵的驱动装置向右运动时，而另一个往复泵的驱动装置则向左运动。两者的运动方向在同一时刻总是相反的，两个线性往复泵在相反方向产生的冲击震动刚好相互抵消，可使得采样泵平稳工作。
在另一种实施例中，请参考图3，图中箭头分别表示两个线性往复泵压出流体时其内部驱动装置所输出的运动方向，本例设定箭头所示方向为线性往复泵的朝向，线性往复泵抽取流体时其内部驱动装置输出的运动方向为与朝向相反的方向，即图3所示的两个线性往复泵的朝向相反。此时控制系统分别对两个线性往复泵发出相同的驱动信号（即幅度相同、相位相同），使得两个线性往复泵的抽打时序相同，即当一个线性往复泵抽取流体时，另一个线性往复泵也在抽取流体，此时由于两个线性往复泵朝向相反，其内部驱动装置输出的运动方向也相反，两个线性往复泵产生的冲击震动也在相反方向，彼此刚好相互抵消，能使得采样泵平稳工作。
对于旋转电机往复泵，在旋转电机传动输出件（如柱塞或活塞）对流体做功的过程中，输出件也会产生往复冲击。在一种实施例中，可利用控制系统分别对两个旋转电机往复泵输出驱动信号，控制其内部旋转电机的旋转时序，以调整往复泵内的输出件往复直线运动的时序。
当然，往复泵组内还可以包括一个线性往复泵和一个旋转电机往复泵。
在另一实施例中，还可将同组内的两个往复泵的输出通道（即线性往复泵的流体出口）汇合到一起，形成一个整体的汇合输出通道，汇合输出通道与同组的两个往复泵的输出通道连通，以起到整体输出流体的目的。当两个线性往复泵同向设置时，将其输出通道整合形成整体输出通道时，当一个线性往复泵抽取流体时，另一个线性往复泵压出流体，两个往复泵之间输出流体流量形成峰谷值互补，还可以起到稳定流量、消除波动的作用。
本流体输出装置实施例也可以包括多个往复泵组，该多个往复泵组可以分别独立设置，也可以相互之间刚性固定连接，还可以部分往复泵组之间刚性固定连接，另一部分往复泵组独立设置。
以下以流体为气体、往复泵为线性往复泵为例对采样泵进行说明：
请参考图4，采样泵包括控制系统（图中未表示出控制系统）、两个线性往复泵11、12和连接板2，线性往复泵11、12上具有作为流体进道的进气嘴112、122和作为流体出道的出气嘴111、121。两个线性往复泵11、12都刚性固定在连接板2上，使得两个线性往复泵11、12和连接板2形成一个整体结构。
本实施例中，两个线性往复泵11、12朝向相同，控制系统可通过驱动信号来协调两个线性往复泵11、12的工作时序，即分别给两个线性往复泵11、12一个幅值相同，但相位相差180°的驱动信号，使得两个线性往复泵11、12的电机动子运动方向在同一时刻总是相反的，两个线性往复泵11、12在相反方向产生的冲击振动刚好通过连接板2相互抵消或大部分抵消。
另一方面，可将两个线性往复泵的出气嘴111、121汇合到一起，形成一个整体的汇合输出通道。由于两个线性往复泵11、12的打气动作交替进行，其各自输出的交变气流并联到一起时，刚好处于波峰与波谷叠加状态，在流体输送时保持稳定流量，能大大消除流体的波动，起到稳流作用。
请参考图5，本气体输送装置的第二种实施例与第一种实施例的区别在于，省去连接板，使两个线性往复泵11、12直接沿轴向直接刚性固定连接形成一体结构。
本流体输出装置的以上各个实施例可应用到流体分析仪或者流体检测仪器中，以一种气体分析仪为例进行说明：
请参考图4，在气体分析仪的一种具体实施例中，气体分析仪包括上述的任一种采样泵以及气体测量模块，该气体测量模块用于对气体进行检查和分析，气体测量模块可采用已有的技术或将来的技术方案实现对气体的检测和分析。采样泵用于将待检测和分析的气体自气源输送到该气体测量模块中。
本实施例还包括基座3和气路（图中未示出），该基座3用于固定安装往复泵组，该气路固定安装在基座3上或设计在基座3内部，该气路包括两组进气接口32、34和两组出气接口31、33，其中两组出气接口31、33相互连通，形成一个大出气口，用于汇集两个线性往复泵11、12所输出的气体，而两个进气接口32、34在内部也是相互连通的。由于气体分析仪中的气体传感器属于精密部件，不仅易受外界震动干扰，而且对于被监测气体的流量波动也较敏感，如果经过流量传感器的流量有较大波动，也会引入测量噪声，影响测量精度。本实施例采用冲击作用上对称的两个往复泵，一方面降低了其在工作时的冲击和震动，可平稳输送气体，可提高气体传感器的测量精度。另一方面，本实施例中的采样泵采用交替进行的打气驱动时序，对输出气流具有稳流的作用，能大大消除气路整体气流的波动，进一步地提高了气体传感器的测量精度。
本发明可以有一些变形实施方式，比如，基于本发明解决减震问题的思路，一组往复泵中的两个也可以不设置在同一直线上，只要两者冲击力方向相反，即能一定程度上达到减震的目的。
以上内容是结合具体的实施方式对本发明所作的进一步详细说明，不能认定本发明的具体实施只局限于这些说明。对于本发明所属技术领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干简单推演或替换，都应当视为属于本发明的保护范围。

Claims (11)

  1. 一种采样泵,其特征在于，包括：
    至少一组往复泵组，每组所述往复泵组包括两个往复泵；
    控制系统，用于输出控制往复泵往复抽打的驱动信号，所述控制系统被配置为输出使同组内的两个往复泵在同一时刻形成冲击方向相反的驱动信号。
  2. 如权利要求1所述的采样泵，其特征在于，所述两个往复泵以使它们所产生的往复冲击力方向处于同一条直线的方式固定安装。
  3. 如权利要求1或2所述的采样泵，其特征在于，同组的两个往复泵为冲击力相同或基本相同的线性往复泵。
  4. 如权利要求1或2所述的采样泵，其特征在于，同组的两个往复泵刚性固定在同一直线上，且安装朝向相同，且其驱动信号的幅值相同，相位相差180度。
  5. 如权利要求1或2所述的采样泵，其特征在于，同组的两个往复泵刚性固定在同一直线上，且安装朝向相反，且其驱动信号的幅值和相位相同。
  6. 如权利要求1-5中任一项所述的采样泵，其特征在于，所述同组的两个往复泵之间直接刚性固定连接成一体结构。
  7. 如权利要求1-5中任一项所述的采样泵，其特征在于，还包括至少一个连接载体，所述同组的两个往复泵刚性固定安装在同一个连接载体上。
  8. 如权利要求7所述的采样泵，其特征在于，所述连接载体为连接板，所述连接板固定在往复泵的侧面。
  9. 如权利要求1-8中任一项所述的采样泵，其特征在于，还包括至少一个汇合输出通道，所述汇合输出通道与同组的两个往复泵的输出通道连通，以整合同组内两个往复泵所输出的流体。
  10. 一种气体分析仪，其特征在于，包括：
    气体测量模块，用于对气体进行检测和分析；
    如权利要求1-9任一项所述的采样泵，为气体测量模块提供被检测气体。
  11. 如权利要求10所述的气体分析仪，其特征在于，还包括气路，所述气路包括至少两个出气接口和至少一个汇合输出通道，所述两个出气接口的输出端连通一个汇合输出通道；所述同组的两个往复泵上的输出通道分别与对应的出气接口连通。
PCT/CN2012/087485 2012-01-19 2012-12-26 采样泵及气体分析仪 Ceased WO2013107253A1 (zh)

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103217319B (zh) * 2012-01-19 2017-05-17 深圳迈瑞生物医疗电子股份有限公司 采样泵及气体分析仪
EP3020437B1 (en) * 2014-11-13 2023-06-07 Shenzhen Mindray Bio-Medical Electronics Co., Ltd. Controlling a flow through a pneumatic system
CN208060238U (zh) * 2016-06-02 2018-11-06 汉高（中国）投资有限公司 便携式气味检测仪

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1281527A (zh) * 1998-12-02 2001-01-24 金昌钧 往复旋转式活塞装置以及利用这种装置的压力泵和内燃机
CN201843759U (zh) * 2010-10-13 2011-05-25 江苏富林医疗设备有限公司 气泵
CN102305203A (zh) * 2011-08-16 2012-01-04 北京工业大学 直线电机驱动柱塞泵

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3816029A (en) * 1972-10-03 1974-06-11 Duriron Co Pumping unit for constant pulseless flow
US4359312A (en) * 1978-08-15 1982-11-16 Zumtobel Kg Reciprocating pump for the pulsation-free delivery of a liquid
US4488853A (en) * 1980-08-28 1984-12-18 New Process Industries, Inc. Fluid pressure ratio transformer system
US4386888A (en) * 1980-09-29 1983-06-07 Mccann's Engineering And Manufacturing Company Double diaphragm operated reversing valve pump
US4681513A (en) * 1985-02-01 1987-07-21 Jeol Ltd. Two-stage pump assembly
GB8517549D0 (en) * 1985-07-11 1985-08-14 Smidth & Co As F L Gas monitoring equipment
CN2043356U (zh) * 1988-11-05 1989-08-23 广州市环境保护技术设备公司 大气采样器
DE4225380B4 (de) * 1992-07-31 2004-07-15 Linde Ag Hydrostatisches Aggregat mit einer Hauptpumpe und einer Nebenpumpe
IL109267A (en) * 1993-04-13 1998-02-22 Hughes Aircraft Co Linear compressor including reciprocating piston and machined double-helix piston spring
SE9600748D0 (sv) * 1996-02-27 1996-02-27 Pharmacia Biotech Ab Pump
US5818131A (en) * 1997-05-13 1998-10-06 Zhang; Wei-Min Linear motor compressor and its application in cooling system
JP4377639B2 (ja) * 2003-09-18 2009-12-02 株式会社日立ハイテクノロジーズ ポンプおよびクロマトグラフ用液体ポンプ
CN100494983C (zh) * 2005-08-12 2009-06-03 深圳迈瑞生物医疗电子股份有限公司 利用红外光吸收特性自动校准和测量气体浓度的方法和装置
CN201013557Y (zh) * 2007-02-13 2008-01-30 单学花 新型便携式双流量气体采样泵
WO2010069320A2 (en) * 2008-12-19 2010-06-24 Stobbe Tech A/S Biopharmaceutical plant in a column
US9695806B2 (en) * 2009-07-22 2017-07-04 Vbox, Incorporated Method of controlling gaseous fluid pump
JP5667912B2 (ja) * 2010-05-18 2015-02-12 株式会社堀場製作所 吸着性ガス分析装置
CN103217319B (zh) * 2012-01-19 2017-05-17 深圳迈瑞生物医疗电子股份有限公司 采样泵及气体分析仪

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1281527A (zh) * 1998-12-02 2001-01-24 金昌钧 往复旋转式活塞装置以及利用这种装置的压力泵和内燃机
CN201843759U (zh) * 2010-10-13 2011-05-25 江苏富林医疗设备有限公司 气泵
CN102305203A (zh) * 2011-08-16 2012-01-04 北京工业大学 直线电机驱动柱塞泵

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