CN211634730U

CN211634730U - Flow acquisition device and breathing machine

Info

Publication number: CN211634730U
Application number: CN201922132663.XU
Authority: CN
Inventors: 夏聪
Original assignee: Shenzhen City Daya Medical Technology Co ltd
Current assignee: Shenzhen City Daya Medical Technology Co ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-10-09
Anticipated expiration: 2029-11-29

Abstract

The utility model discloses a flow acquisition device and breathing machine, flow acquisition device are including the amortization box that has the air inlet runner and locate throttling arrangement in the air inlet runner, two differential pressure sensor collection mouths have been seted up on the wall of air inlet runner, one differential pressure sensor collection mouth is located throttling arrangement is close to one side of air intake, another differential pressure sensor collection mouth is located throttling arrangement keeps away from one side of air intake. The utility model provides a flow acquisition device measuring result is stable, and simple structure, with low costs.

Description

Flow acquisition device and breathing machine

Technical Field

The utility model relates to a breathing machine field especially relates to a flow acquisition device and breathing machine.

Background

The flow is an important parameter of the breathing machine, and therefore the flow of the breathing machine needs to be acquired, a common scheme for acquiring the flow of the breathing machine in the prior art is to adopt a relatively complex differential pressure sensor, however, when the flow of the breathing machine is acquired, the defects of inaccurate measurement result, complex manufacturing process and the like caused by overlarge air resistance exist.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a measuring result is stable, simple in structure and low in cost.

The utility model discloses an one of the purpose adopts following technical scheme to realize:

the utility model provides a flow collection system for breathing machine, including the amortization box that has air inlet runner and locate throttling arrangement in the air inlet runner, two differential pressure sensor collection mouths have been seted up on air inlet runner's the wall, one differential pressure sensor collection mouth is located throttling arrangement is close to one side of air intake, another differential pressure sensor collection mouth is located throttling arrangement keeps away from one side of air intake.

Further, throttling arrangement includes mounting panel and a plurality of interval set up side by side in fin on a mounting panel side, a plurality of fin will air inlet channel divide into a plurality of sub air inlet channel.

Furthermore, the fins located on the edges of the two opposite sides of the mounting plate are defined as first fins, the outer side faces of the first fins are respectively provided with a positioning lug in a protruding mode, and two opposite wall faces of the air inlet flow channel are respectively provided with a positioning groove matched with the positioning lug to position the throttling device.

Further, the fin extends along vertical direction, just the mounting panel with the fin is kept away from one side of mounting panel respectively with the laminating of two relative walls of air inlet flow channel.

Furthermore, the positioning lug is in a long strip shape, and the length direction of the positioning lug extends along the vertical direction.

Furthermore, the two differential pressure sensor acquisition ports are symmetrically arranged on two sides of the throttling device.

Furthermore, the distance between the collecting ports of the two differential pressure sensors and the throttling device in the gas flowing direction is 3-5 mm.

Furthermore, the silencing box comprises a shell and a silencing pad arranged at the bottom of the shell, and the shell and the silencing pad are matched to form the air inlet flow channel.

Furthermore, two guide pipes which are respectively communicated with the acquisition ports of the differential pressure sensors are convexly arranged on the outer surface of the silencing box.

The utility model also provides a breathing machine, including differential pressure sensor and as above flow acquisition device, differential pressure sensor has two interfaces, two the interface respectively with two differential pressure sensor gathers mouthful intercommunication.

Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model discloses set up throttling arrangement in air inlet runner, two differential pressure sensor collection mouths have been seted up on air inlet runner's the wall, one differential pressure sensor collection mouth is located throttling arrangement is close to one side of air intake, another differential pressure sensor collection mouth is located throttling arrangement keeps away from one side of air intake for the air-resistor is little when gathering the flow, measuring result is stable, and flow acquisition device simple structure, with low costs.

Drawings

Fig. 1 is a schematic structural diagram of a flow collection device according to an embodiment of the present invention;

FIG. 2 is an exploded view of the flow collection device of FIG. 1;

fig. 3 is a schematic structural diagram of a throttling device in a flow collection device according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram (looking toward the bottom) of a sound box in the flow rate collecting device according to the embodiment of the present invention.

In the figure:

100. a flow collection device; 1. a silencing box; 111. a housing; 2. a sound-deadening pad; 3. a throttling device; 110. an air inlet; 120. an air inlet channel; 130. a differential pressure sensor acquisition port; 31. a fin; 31', a first fin; 32. mounting a plate; 140. a sub air inlet channel; 33. positioning the bump; 150. a positioning groove; 20. mounting holes; 11. a conduit; 12. and (6) mounting the column.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

It should be noted that all the directional indications (such as upper, lower, left, right, front, back, top and bottom … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components in a specific posture (as shown in the figure), and if the specific posture is changed, the directional indication is changed accordingly.

It will also be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Referring to fig. 1 and 2, the present invention provides a flow collecting device 100 for a ventilator, comprising a silencing box 1 having an air inlet channel 120, the silencing box further having an air inlet formed on a surface thereof, wherein air flows into the silencing box 1 from the air inlet 110 through the air inlet channel 120 to supply air to the ventilator, a throttle device 3 is disposed in the air inlet channel 120, the throttle device 3 increases a flow velocity and reduces a static pressure, a static pressure difference is generated in front of and behind the throttle device 3, a differential pressure sensor collecting port 130 is disposed on a wall surface of the air inlet channel 120 at a position of the throttle device 3 close to the air inlet 110, another differential pressure sensor collecting port 130 is disposed on a wall surface of the air inlet channel 120 at a position of the throttle device 3 away from the air inlet 110, the static pressure difference between the front and the rear of the throttle device 3 is collected through the two differential pressure sensor collecting ports 130, and according to a relationship, the flow of the gas flowing through is calculated, the measurement result is stable, the air resistance generated in the air inlet channel 120 is small, the structure is simple, and the cost is low.

Two guide pipes 11 respectively communicated with each differential pressure sensor collecting port 130 are convexly arranged on the outer surface of the silencing box 1 so as to facilitate the connection of the differential pressure sensors and the differential pressure sensor collecting ports 130.

Referring to fig. 2, 3 and 4, the throttling device 3 includes a plurality of sub air inlet channels 140 extending along the air inlet direction, the throttling device 3 includes a mounting plate 32 and a plurality of fins 31 arranged on the side surface of the mounting plate 32 at intervals, and each sub air inlet channel 140 is formed between every two adjacent fins 31.

It will be appreciated that the fins 31 may extend vertically, may extend horizontally, or may be inclined relative to the horizontal, preferably the fins 31 extend vertically, and the mounting plate 32 is located at the bottom of the throttle device 3, preferably the top and bottom of the throttle device 3 abut the wall of the intake air flow passage 120.

The fins 31 located on the opposite two side edges of the mounting plate 32 are defined as first fins 31 ', the outer side surfaces of the two first fins 31' are respectively provided with a strip-shaped positioning bump 33 which extends along the vertical direction along the length direction in a protruding manner, and the wall surface of the air inlet flow channel 120 is provided with a positioning groove 150 which is matched with the positioning bump 33.

Preferably, the length of the throttling device 3 along the air inlet direction is 20mm, the number of the fins 31 is 6, the thickness is 1mm, the distance between two adjacent fins 31 is 3mm, and the distance between the two differential pressure sensor acquisition ports 130 is 27 mm.

Preferably, the two differential pressure sensor collecting ports 130 are symmetrically arranged on two sides of the throttling device 3, and the distances between the two differential pressure sensor collecting ports 130 and the throttling device 3 in the gas flowing direction are both 3-5 mm.

Preferably, the silencing box 1 comprises a shell 11 and a silencing pad 2 arranged at the bottom of the shell 11, the shell 111 and the silencing pad 2 are matched to form the air inlet flow passage 120, before the silencing pad 2 and the silencing box 1 are assembled, a strip-shaped positioning lug 33 is inserted into the air inlet flow passage 120 along the vertical direction, the positioning lug 33 is matched with a positioning groove 150 to position the throttling device 3 in the air inlet flow passage 120, the positioning lug 33 and the positioning groove 150 can also be replaced by an elastic buckle (not shown) and a clamping hole (not shown), and preferably, the silencing pad 2 is a sponge pad.

The silencing pad 2 is provided with a mounting hole 20, the bottom of the silencing box 1 is convexly provided with a mounting column 12, and the silencing pad 2 and the silencing box 1 are fixed through the mounting column 12 and the mounting hole 20.

The utility model discloses still provide a including as above the breathing machine of flow acquisition device 100, the breathing machine still includes differential pressure sensor (not shown in the figure), and differential pressure sensor has two interfaces, these two interfaces respectively with two differential pressure sensor collection mouth 130 intercommunications.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. The utility model provides a flow collection system for breathing machine, its characterized in that, including the amortization box that has air inlet runner and locating throttling arrangement in the air inlet runner, the amortization box still has the air intake that is formed at the surface, two differential pressure sensor collection mouths have been seted up on air inlet runner's the wall, one differential pressure sensor collection mouth is located throttling arrangement is close to one side of air intake, another differential pressure sensor collection mouth is located throttling arrangement keeps away from one side of air intake.

2. The flow collection device of claim 1, wherein the restriction device comprises a mounting plate and a plurality of fins spaced apart from one another and disposed on a side of the mounting plate, the plurality of fins dividing the inlet airflow channel into a plurality of sub-inlet airflow channels.

3. The flow collecting device according to claim 2, wherein the fins located at two opposite side edges of the mounting plate are defined as first fins, positioning protrusions are protruded from outer side surfaces of the first fins, and positioning grooves matched with the positioning protrusions to position the throttling device are formed in two opposite wall surfaces of the air inlet flow passage.

4. The flow collection device of claim 2, wherein the fins extend in a vertical direction, and wherein the mounting plate and the side of the fins remote from the mounting plate are respectively attached to two opposite wall surfaces of the intake air channel.

5. The flow collection device of claim 3, wherein the positioning projections are elongated and the length of the positioning projections extends vertically.

6. The flow collection device of claim 1, wherein the two differential pressure sensor collection ports are symmetrically disposed on both sides of the throttling device.

7. The flow collection device of claim 1, wherein the distance between the collection ports of the differential pressure sensors and the throttling device in the gas flow direction is 3-5 mm.

8. The flow collection device of claim 1, wherein the sound dampening cartridge comprises a housing and a sound dampening pad disposed at a bottom of the housing, the housing and the sound dampening pad cooperating to form the intake air channel.

9. The flow collection device of claim 1, wherein two conduits are disposed on the outer surface of said silencing box and are in communication with each of said differential pressure sensor collection ports.

10. A ventilator comprising a differential pressure sensor and a flow collection device according to any one of claims 1-9, wherein the differential pressure sensor has two ports, and the two ports are respectively in communication with the two differential pressure sensor collection ports.