Air resistance consistency screening tool for flow sensor of breathing machine

Abstract

The utility model provides an air resistance consistency screening tool for a flow sensor of a breathing machine, which relates to the technical field of flow detection and comprises a controller, a fan, the flow sensor, a connecting pipeline and an air resistance detection component used for placing an air resistance device, and an air outlet of the fan is connected and communicated with one end of the air resistance detection component through the connecting pipeline. The flow sensor is fixedly connected in the connecting pipeline, and the fan, the flow sensor and the air resistance detection assembly are electrically connected with the controller; according to the air resistance consistency screening tool for the flow sensor of the breathing machine, actual airflow testing can be directly carried out on air resistance devices so as to screen the air resistance devices.

Description

TECHNICAL FIELD

[0001] The utility model relates to flow detection technical field especially relates to a breathing machine flow sensor gas resistance consistency screening frock. BACKGROUND

[0002] The gas resistance device is usually injection molded by plastic mold, and the consistency of the gas resistance finished product directly affects the accuracy of the flow obtained by the breathing machine. At the same time, if the flow fluctuation read by the breathing machine is large, it will also indirectly affect the user's experience of the breathing machine product.

[0003] During production, the dimensional accuracy of the gas resistance device is extremely high, and the difference is difficult to measure by instrument. Even if the size of each gas resistance device is consistent, there will be airflow differences in the application process, resulting in large flow fluctuation read by the subsequent breathing machine. Moreover, it is difficult to measure whether each gas resistance device has differences using ordinary instruments (such as a projection measuring instrument and a three-coordinate measuring instrument).

[0004] The best solution for the research and development personnel is to need a method or device to directly test the actual airflow of the gas resistance device by passing airflow, and then directly screen out qualified gas resistance devices.

[0005] Therefore, it is necessary to provide a breathing machine flow sensor gas resistance consistency screening frock to directly test the actual airflow of the gas resistance device to screen the gas resistance device. CONTENT OF THE UTILITY MODEL

[0006] In order to solve the above problems, the utility model provides a breathing machine flow sensor gas resistance consistency screening frock to directly test the actual airflow of the gas resistance device to screen the gas resistance device.

[0007] The utility model realizes the following technical schemes:

[0008] The utility model provides a breathing machine flow sensor gas resistance consistency screening frock, including controller, fan, flow sensor, connecting pipeline, be used for placing gas resistance detection assembly of gas resistance device, the air outlet of fan is connected with one end of gas resistance detection assembly through connecting pipeline and is conducted, flow sensor is fixedly connected in connecting pipeline, fan, flow sensor, gas resistance detection assembly all are connected with controller.

[0009] Further, the air blockage detection assembly comprises a housing, a sensor, the sensor is electrically connected with the controller, a flow-through groove is arranged in the housing, one end of the connecting pipeline is fixedly connected with the housing and communicated with the flow-through groove, two ends of the sensor are respectively communicated with one side of the flow-through groove, the air blockage device is fixedly connected in the flow-through groove and forms air pressure resistance to the two ends of the sensor, so that the two ends of the sensor form an air pressure difference.

[0010] Further, the air blockage device divides the flow-through groove into a first air pressure groove and a second air pressure groove, the first air pressure groove is communicated with one end of the connecting pipeline and one end of the sensor respectively, and the second air pressure groove is communicated with the other end of the sensor.

[0011] Further, one side of the housing is provided with a first connecting pipeline and a second connecting pipeline, one end of the first connecting pipeline is communicated with the first air pressure groove, the other end of the first connecting pipeline is connected with and communicated with one end of the sensor, one end of the second connecting pipeline is communicated with the second air pressure groove, and the other end of the second connecting pipeline is connected with and communicated with the other end of the sensor.

[0012] Further, the air blockage detection assembly further comprises a filter screen, the filter screen is fixedly connected to one end of the housing and filters the airflow of the connecting pipeline.

[0013] Further, one end of the connecting pipeline is provided with a sleeve interface, the sleeve interface is sleeved on one end of the housing and wraps the outer circumferential side of the filter screen.

[0014] Further, the controller is provided with a control circuit board, the control circuit board is electrically connected with the fan, the flow sensor and the air blockage detection assembly respectively.

[0015] Further, the controller is provided with a display, the display is electrically connected with the control circuit board.

[0016] Further, the control circuit board is provided with a data processing module, a driving module, a flow monitoring module, an air pressure monitoring module and a display module, the data processing module is electrically connected with the driving module, the flow monitoring module, the air pressure monitoring module and the display module respectively, the driving module is electrically connected with the fan, the flow monitoring module is electrically connected with the flow sensor, the air pressure monitoring module is electrically connected with the air blockage detection assembly, and the display module is electrically connected with the display.

[0017] The data processing module is used to obtain the flow value of the flow monitoring module and the air pressure value returned by the air pressure monitoring module, and to issue a display command to the display module so as to display the flow value and air pressure value through the display. The data processing module is also used to issue corresponding running commands to the drive module.

[0018] The drive module is used to send commands to the fan, so that the fan can be adjusted to different speeds to blow out different flow rates of air.

[0019] The flow monitoring module is used to acquire the flow value of the flow sensor and transmit it back to the data processing module;

[0020] The air pressure monitoring module is used to acquire the air pressure value of the air resistance detection component and transmit it back to the data processing module;

[0021] The display module is used to issue corresponding running instructions to the display.

[0022] The beneficial effects of this utility model are:

[0023] This invention uses a controller to control the airflow of a fan. A flow sensor acquires the initial airflow rate of the fan. The fan is connected to an air resistance detection component via a connecting pipe, directing airflow into the air resistance detection component. The air resistance detection component holds the air resistance devices to be tested. When testing each air resistance device individually, a single device is placed and fixed within the air resistance detection component. The controller then turns on the fan to direct airflow into the air resistance detection component. Data transmitted back to the controller from the flow sensor and the air resistance detection component is used to determine whether the device is qualified. The next air resistance device is then placed in the air resistance detection component and fixed, and the above steps are repeated. Each air resistance device is tested individually to screen out qualified devices. In summary, this ventilator flow sensor air resistance consistency screening fixture can directly test the actual airflow of air resistance devices for screening purposes. Attached Figure Description

[0024] Fig. 1 This is a schematic diagram of the overall design of the ventilator flow sensor air resistance consistency screening tooling of this utility model.

[0025] Fig. 2 This is a cross-sectional view of the air resistance detection component of the air resistance consistency screening tool for the ventilator flow sensor of this utility model.

[0026] The attached figures are labeled as follows:

[0027] Controller 1, control circuit board 11, display 12;

[0028] Fan 2;

[0029] Flow sensor 3;

[0030] Connecting pipe 4, socket 41;

[0031] Air resistance detection component 5, housing 51, flow channel 511, first air pressure channel 5111, second air pressure channel 5112, first connecting pipe 512, second connecting pipe 513, sensor 52, filter screen 53.

[0032] Air resistance device 6. Detailed Implementation

[0033] To more clearly and completely illustrate the technical solution of this utility model, the following description, in conjunction with the accompanying drawings, will further explain this utility model.

[0034] Please refer to Figs. 1-2 This utility model proposes a ventilator flow sensor air resistance consistency screening tool, including a controller 1, a fan 2, a flow sensor 3, a connecting pipe 4, and an air resistance detection component 5 for placing an air resistance device 6. The air outlet of the fan 2 is connected and conductive to one end of the air resistance detection component 5 through the connecting pipe 4. The flow sensor 3 is fixedly connected in the connecting pipe 4. The fan 2, the flow sensor 3, and the air resistance detection component 5 are all electrically connected to the controller 1. The flow sensor 3 is a flow meter used to measure the airflow rate in the connecting pipe 4.

[0035] In this embodiment, when the present invention is used, the controller 1 controls the blower 2 to blow air. The initial airflow of the blower 2 is obtained through the flow sensor 3. The blower 2 is connected to the air resistance detection component 5 through the connecting pipe 4 so that the air is blown into the air resistance detection component 5. The air resistance detection component 5 is used to place the air resistance device 6 to be tested. When testing the air resistance device 6 one by one, a single air resistance device 6 is placed and fixed in the air resistance detection component 5. Then, the controller 1 turns on the blower 2 to blow air into the air resistance detection component 5. The data returned to the controller 1 by the flow sensor 3 and the air resistance detection component 5 is used to determine whether the air resistance device 6 is a qualified product. If it is a qualified product, it is taken out and placed in the qualified product storage basket. If it is a defective product, it is taken out and placed in the defective product storage basket. Then, the next air resistance device 6 is replaced and placed in the air resistance detection component 5 for fixing. The above steps are repeated to test the air resistance devices 6 one by one so as to screen out a large number of qualified air resistance devices 6.

[0036] In summary, this ventilator flow sensor air resistance consistency screening fixture can directly test the actual airflow of air resistance devices to screen them.

[0037] In this embodiment, the air resistance detection component 5 includes a housing 51 and a sensor 52. The sensor 52 is electrically connected to the controller 1. A flow channel 511 is provided inside the housing 51. One end of the connecting pipe 4 is fixedly connected to the housing 511 and communicates with the flow channel 511. The two ends of the sensor 52 are respectively communicated with one side of the flow channel 511. The air resistance device 6 is fixedly connected inside the flow channel 511 and forms an air pressure obstruction on the two ends of the sensor 52, so that an air pressure difference is formed on the two ends of the sensor 52. The sensor 52 consists of two air pressure sensors arranged in parallel, used to detect two air pressure values. When the fan 2 blows air into the flow channel 511, the air is obstructed by the air resistance device 6 inside the flow channel 511, so that the air pressure obtained by the two ends of the sensor 52 generates an air pressure difference. The values ​​of these two air pressure differences are transmitted back to the controller 1 for data processing. Combined with the flow value of the flow sensor 3, it is determined whether the air resistance device 6 is a qualified product.

[0038] In this embodiment, the air resistance device 6 divides the flow channel 511 into a first air pressure channel 5111 and a second air pressure channel 5112. The first air pressure channel 5111 is connected to one end of the connecting pipe 4 and the sensor 52, respectively, and the second air pressure channel 5112 is connected to the other end of the sensor 52. When the fan 2 blows air, after the air enters the flow channel 511, the sensor 52 can detect the air pressure difference between the first air pressure channel 5111 and the second air pressure channel 5112 under the separation of the air resistance device 6.

[0039] In this embodiment, a first connecting pipe 512 and a second connecting pipe 513 are provided on one side of the housing 51. One end of the first connecting pipe 512 is connected to the first air pressure groove 5111, and the other end of the first connecting pipe 512 is connected to and connected to one end of the sensor 52. One end of the second connecting pipe 513 is connected to the second air pressure groove 5112, and the other end of the second connecting pipe 513 is connected to and connected to the other end of the sensor 52. Both the first connecting pipe 512 and the second connecting pipe 513 are circular pipe structures. The first connecting pipe 512 is connected to one of the air pressure sensors in the sensor 52 to detect the air pressure in the first air pressure groove 5111, and the second connecting pipe 513 is connected to the other air pressure sensor in the sensor 52 to detect the air pressure in the second air pressure groove 5112.

[0040] In this embodiment, the air resistance detection component 5 also includes a filter screen 53, which is fixedly connected to one end of the housing 51 and filters the airflow of the connecting pipe 4. The filter screen 53 is used to filter the airflow blown from the fan 2 to the connecting pipe 4 to prevent large particles from getting stuck in the air resistance device 6 and affecting the detection results.

[0041] In this embodiment, one end of the connecting pipe 4 is provided with a sleeve 41, which is sleeved on one end of the housing 51 and wraps around the outer periphery of the filter screen 53; the sleeve 41 is used to provide a structure for the connecting pipe 4 to connect with the housing 51.

[0042] In this embodiment, the controller 1 is provided with a control circuit board 11, which is electrically connected to the fan 2, the flow sensor 3, and the air resistance detection component 5 respectively; the control circuit board 11 is used to control the operation of the fan 2, the flow sensor 3, and the air resistance detection component 5.

[0043] In this embodiment, the controller 1 is equipped with a display 12, which is electrically connected to the control circuit board 11. The display 12 is used to display the air pressure difference value measured by the air resistance detection component 5 on the current air resistance device 6, and also displays the flow value obtained by the flow sensor 3.

[0044] In this embodiment, the control circuit board 11 is equipped with a data processing module, a drive module, a flow monitoring module, an air pressure monitoring module, and a display module. The data processing module is electrically connected to the drive module, flow monitoring module, air pressure monitoring module, and display module, respectively. The drive module is electrically connected to the fan 2, the flow monitoring module is electrically connected to the flow sensor, the air pressure monitoring module is electrically connected to the air resistance detection component 5, and the display module is electrically connected to the display 12. The data processing module is used to acquire the flow rate value from the flow monitoring module and the air pressure value returned by the air pressure monitoring module, and to issue a display command to the display. The module displays the flow rate and air pressure values ​​on a display screen. The data processing module is also used to issue corresponding operating commands to the drive module. The drive module issues commands to the fan 2, enabling the fan 2 to be adjusted to different speeds to blow out different flow rates. The flow monitoring module acquires the flow rate value from the flow sensor and sends it back to the data processing module. The air pressure monitoring module acquires the air pressure value from the air resistance detection component 5, mainly the air pressure of sensor 52, and sends it back to the data processing module. The display module issues corresponding operating commands to the display 12.

[0045] Of course, there may be other implementations of this utility model. Based on this implementation, other implementations obtained by those skilled in the art without any creative effort are all within the scope of protection of this utility model.

Claims

1. A tooling for screening the air resistance consistency of a ventilator flow sensor, characterized in that, The device includes a controller, a fan, a flow sensor, a connecting pipe, and an air resistance detection component for housing an air resistance device. The air outlet of the fan is connected and conductive to one end of the air resistance detection component through the connecting pipe. The flow sensor is fixedly connected inside the connecting pipe. The fan, the flow sensor, and the air resistance detection component are all electrically connected to the controller.

2. The ventilator flow sensor air resistance consistency screening tooling according to claim 1, characterized in that, The air resistance detection component includes a housing and a sensor. The sensor is electrically connected to the controller. A flow groove is provided inside the housing. One end of the connecting pipe is fixedly connected to the housing and communicates with the flow groove. Both ends of the sensor are respectively communicated with one side of the flow groove. The air resistance device is fixedly connected inside the flow groove and forms an air pressure resistance at both ends of the sensor, so that an air pressure difference is formed at both ends of the sensor.

3. The ventilator flow sensor air resistance consistency screening tooling according to claim 2, characterized in that, The air resistance device divides the flow channel into a first air pressure channel and a second air pressure channel. The first air pressure channel is connected to one end of the connecting pipe and one end of the sensor, respectively, and the second air pressure channel is connected to the other end of the sensor.

4. The ventilator flow sensor air resistance consistency screening tooling according to claim 3, characterized in that, The housing is provided with a first connecting pipe and a second connecting pipe on one side. One end of the first connecting pipe is connected to the first air pressure groove, and the other end of the first connecting pipe is connected to one end of the sensor. One end of the second connecting pipe is connected to the second air pressure groove, and the other end of the second connecting pipe is connected to the other end of the sensor.

5. The ventilator flow sensor air resistance consistency screening tooling according to claim 2, characterized in that, The air resistance detection component also includes a filter screen, which is fixedly connected to one end of the housing and filters the airflow of the connecting pipe.

6. The ventilator flow sensor air resistance consistency screening tooling according to claim 5, characterized in that, One end of the connecting pipe is provided with a sleeve, which is sleeved on one end of the housing and wraps around the outer periphery of the filter screen.

7. The ventilator flow sensor air resistance consistency screening tooling according to claim 1, characterized in that, The controller is equipped with a control circuit board, which is electrically connected to the fan, the flow sensor, and the air resistance detection component.

8. The ventilator flow sensor air resistance consistency screening tooling according to claim 7, characterized in that, The controller is equipped with a display, which is electrically connected to the control circuit board.

9. The ventilator flow sensor air resistance consistency screening tooling according to claim 8, characterized in that, The control circuit board is equipped with a data processing module, a drive module, a flow monitoring module, an air pressure monitoring module, and a display module. The data processing module is electrically connected to the drive module, the flow monitoring module, the air pressure monitoring module, and the display module, respectively. The drive module is electrically connected to the fan, the flow monitoring module is electrically connected to the flow sensor, the air pressure monitoring module is electrically connected to the air resistance detection component, and the display module is electrically connected to the display. The data processing module is used to obtain the flow value of the flow monitoring module and the air pressure value returned by the air pressure monitoring module, and to issue a display command to the display module so as to display the flow value and air pressure value through the display. The data processing module is also used to issue corresponding running commands to the drive module. The drive module is used to send commands to the fan, so that the fan can be adjusted to different speeds to blow out different flow rates of air. The flow monitoring module is used to acquire the flow value of the flow sensor and transmit it back to the data processing module; The air pressure monitoring module is used to acquire the air pressure value of the air resistance detection component and transmit it back to the data processing module; The display module is used to issue corresponding running instructions to the display.

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