Flow velocity and flow sensor

Abstract

The utility model relates to a flow velocity and flow sensor which comprises a first shell and a sensor assembly, a vertically-through through hole is formed in the first shell, a fixing part, a flow guide part, an impeller and a connecting part are sequentially arranged in the through hole, one end of the impeller is rotationally connected with the connecting part, and the other end of the impeller is rotationally connected with the flow guide part. The center of the impeller, the center of the connecting part and the center of the guide wheel part are all located on the same axis, the fixing part is located on the side, away from the impeller, of the flow guide part and used for fixing the flow guide part, the flow guide part comprises a plurality of first-class blades arranged in the circumferential direction, and the included angles between the adjacent first-class blades are equal. The included angles between the adjacent second-class blades are equal, magnets are arranged in the two second-class blades in the same radial direction respectively, and when the impeller rotates, the second-class blades correspond to the signal collecting end of the sensor assembly respectively. The flow velocity and flow sensor not only can monitor the flow velocity and flow of gas or liquid, but also improves the monitoring accuracy.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid monitoring, in particular to a flow velocity and flow sensor. Background Art

[0002] In the prior art, the flow rate of gas and the flow rate of liquid need to be monitored by different sensors, which is not only cumbersome to operate, but also increases the additional operation cost. The impeller of the existing flow sensor is impacted by the flow force of liquid or gas, and is prone to irregular rotation, which causes problems such as deviation in monitoring data. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a flow velocity and flow rate sensor, which can not only monitor the flow velocity and flow rate of gas or liquid, but also improve the monitoring accuracy.

[0004] The utility model adopts the following technical solution to solve its technical problem: a flow velocity flow sensor, comprising a shell No. 1 and a sensor assembly, wherein a through hole which passes through the shell No. 1 is provided, wherein a fixing part, a flow guide part, an impeller and a connecting part are sequentially provided in the through hole, wherein one end of the impeller is rotatably connected to the connecting part, and the other end of the impeller is rotatably connected to the flow guide part, and the centers of the impeller, the connecting part and the guide wheel part are all on the same axis, and the fixing part is located on a side of the flow guide part away from the impeller, and the fixing part is used to fix the flow guide part.

[0005] The guide portion includes a plurality of blades of the same type arranged along the circumferential direction, and the angles between adjacent blades of the same type are equal.

[0006] The impeller includes a plurality of second-class blades, the angles between adjacent second-class blades are equal, magnets are respectively arranged in two second-class blades on the same radial direction, and when the impeller rotates, the plurality of second-class blades respectively correspond to the signal collection ends of the sensor assembly.

[0007] The above-mentioned velocity and flow sensor can monitor the velocity and flow of gas or liquid; it also controls the rotation direction of the impeller by adopting the structure of the guide part, solves the problem of irregular rotation of the impeller, and improves the accuracy of equipment monitoring.

[0008] In one embodiment, the sensor assembly of the flow rate flow sensor includes a No. 2 shell, which is connected to the No. 1 shell, a sealed shell is provided in the No. 2 shell, a PCBA and a first sensing chip are provided in the sealed shell, the PCBA is installed in the No. 2 shell, the first sensing chip is installed at one end of the PCBA close to the impeller, and the first sensing chip corresponds to the blades of the impeller.

[0009] In one embodiment, the first sensing chip of the flow rate sensor is a magnetic chip or a Hall chip.

[0010] In one of the embodiments, a temperature chip is provided at one end of the PCBA of the flow rate sensor close to the impeller, and the temperature chip is located on one side of the first sensing chip. A cable and a display light are provided on the second shell, and the connecting ends of the cable and the display light are respectively connected to the PCBA.

[0011] In one of the embodiments, a second sensing chip is disposed at one end of the PCBA of the flow velocity sensor away from the temperature chip.

[0012] In one embodiment, the second sensing chip of the flow rate sensor is a Hall chip.

[0013] In one of the embodiments, the fixing part of the flow rate sensor is a plug, a plug wire or a retaining spring.

[0014] In one of the embodiments, the magnets in the second type of blades of the flow rate sensor are magnets.

[0015] In one of the embodiments, the first shell of the flow velocity flow sensor is configured as a cylindrical shell with a hollow interior, and the connecting portion is configured as a cross-shaped hollow connecting plate.

[0016] The beneficial effects of this application are:

[0017] The present application provides a flow velocity sensor. When gas or liquid flows through the guide part through the through hole, the structure of the guide part drives the impeller to rotate regularly. When the magnet on the impeller rotates to the signal acquisition end of the sensor assembly, the PCBA generates a pulse signal, and then the PCBA control unit converts the pulse signal into data, and transmits the monitoring data to the user end. The flow velocity sensor can monitor the flow rate of gas or the flow rate of liquid, and also ensures that the impeller rotates regularly according to the flow rate of gas or the flow rate of liquid by adopting the structure of the guide part, thereby improving the accuracy of monitoring.

[0018] The flow rate sensor uses a temperature chip to effectively monitor the temperature of the gas or liquid flowing in the through hole.

[0019] The flow rate and flow sensor uses a second sensing chip. The user can adjust the flow rate and flow data by using the current flow rate and flow data and placing the existing magnet on the outside of the second shell and close to the second sensing chip. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of a flow rate sensor according to an embodiment of the present application;

[0021] Figure 2 A cross-sectional view of a flow rate sensor according to an embodiment of the present application;

[0022] Figure 3 A schematic diagram of a sensor assembly, an impeller, a flow guide portion, and a fixing portion of a flow velocity flow sensor according to an embodiment of the present application from one viewing angle;

[0023] Figure 4 A schematic diagram of a sensor assembly, an impeller, a flow guide portion, and a fixing portion of a flow velocity flow sensor according to an embodiment of the present application from another perspective;

[0024] Figure 5 A schematic diagram of a first shell and a second shell of a flow rate flow sensor according to an embodiment of the present application;

[0025] Figure 6 A schematic diagram of a flow guide portion of a flow velocity flow sensor according to an embodiment of the present application;

[0026] in:

[0027] 1. Shell No. 1; 11. Through hole; 12. Fixing part; 13. Guide part; 131. Type I blade; 14. Impeller; 141. Type II blade; 142. Magnet; 15. Connecting part; 2. Sensor assembly; 21. Shell No. 2; 22. Sealed shell; 23. PCBA; 24. First sensing chip; 25. Temperature chip; 26. Cable; 27. Display light; 28. Second sensing chip. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0029] like Figure 1 and Figure 2 As shown, an embodiment of the present application provides a flow velocity flow sensor, including a shell No. 1 and a sensor assembly 2, a through hole 11 is provided in the shell No. 1, and a fixing part 12, a guide part 13, an impeller 14 and a connecting part 15 are sequentially provided in the through hole 11, one end of the impeller 14 is rotatably connected to the connecting part 15, and the other end of the impeller 14 is rotatably connected to the guide part 13, the centers of the impeller 14, the connecting part 15 and the guide wheel part are all on the same axis, the fixing part 12 is located on the side of the guide part 13 away from the impeller 14, and the fixing part 12 is used to fix the guide part 13.

[0030] like Figure 6 As shown, the guide portion 13 includes a plurality of first-type blades 131 arranged along the circumferential direction, and the angles between adjacent first-type blades 131 are equal.

[0031] like Figure 3 and Figure 4As shown, the impeller 14 includes a plurality of second-class blades 141, the angles between adjacent second-class blades 141 are equal, and magnets 142 are respectively arranged in two second-class blades 141 on the same radial direction. When the impeller 14 rotates, the plurality of second-class blades 141 respectively correspond to the signal collection ends of the sensor assembly 2.

[0032] Specifically, the guide part 13 is provided with six first-class blades 131 along the circumferential direction, and the impeller 14 is provided with four second-class blades 141 along the circumferential direction. The connecting part 15 and the fixing part 12 are fixedly connected to the through hole 11 of the first shell 1 respectively. The gas or liquid flows to the fixing part 12 and the guide part 13 through the through hole 11. The gas or liquid drives the impeller 14 to rotate regularly in a fixed direction through the six first-class blades 131 of the guide part 13. The rotation of the impeller 14 drives several second-class blades 141 to rotate. During the rotation process, when the magnets of two second-class blades 141 on the same radial direction rotate close to the first induction chip 24 of the sensor assembly 2, the first induction chip 24 generates a pulse signal to the PCBA 23. The PCBA 23 control unit adopts and records the pulse signal, converts it into monitoring data, and transmits it to the user end through the cable 26.

[0033] In the above structure, the six first-class blades 131 of the guide part 13 are arranged so that the four blades of the impeller 14 rotate regularly in a fixed direction, thereby improving the monitoring accuracy. The flow rate sensor can not only monitor the flow rate of gas, but also monitor the flow rate of liquid, while also improving the detection accuracy.

[0034] like Figure 2 and Figure 3 As shown, in one embodiment, the sensor assembly 2 of the flow rate flow sensor includes a No. 2 shell 21, the No. 2 shell 21 is connected to the No. 1 shell 1, a sealed shell 22 is arranged in the No. 2 shell 21, a PCBA 23 and a first sensing chip 24 are arranged in the sealed shell 22, the PCBA 23 is installed in the No. 2 shell 21, the first sensing chip 24 is installed at one end of the PCBA 23 close to the impeller 14, and the first sensing chip 24 corresponds to the blades of the impeller 14.

[0035] Specifically, a sealed housing 22 with a rubber seal is provided in the second housing 21, a PCBA 23 is installed at one end of the sealed housing 22 close to the impeller 14, and a first induction chip 24 is installed at one end of the PCBA 23 close to the impeller 14 to generate a pulse signal to a magnet on the rotating impeller 14. The setting of the sealed housing 22 plays a waterproof role.

[0036] like Figure 3 As shown, in one embodiment, the first sensing chip 24 of the flow rate sensor is a magnetic chip or a Hall chip. The use of these two chips is convenient for generating a pulse signal to the magnet on the impeller 14.

[0037] like Figure 2 and Figure 3 As shown, in one embodiment, a temperature chip 25 is provided at one end of the PCBA 23 of the flow rate sensor close to the impeller 14, and the temperature chip 25 is located on one side of the first sensing chip 24. A cable 26 and a display light 27 are provided on the second housing 21, and the connecting ends of the cable 26 and the display light 27 are respectively connected to the PCBA 23.

[0038] Specifically, when gas or liquid flows into the through hole 11 of the first shell 1, the temperature chip 25 senses the temperature of the gas or liquid in the first shell 1, and transmits the temperature detection data to the user end through the cable 26 via the PCBA 23. The display light 27 is connected to the PCBA 23, and the display light 27 is used to display the current working status of the flow rate sensor. The arrangement of the temperature chip 25 and the display light 27 facilitates monitoring of the temperature and working status.

[0039] like Figure 2 and Figure 4 As shown, in one embodiment, a second sensing chip 28 is provided at one end of the PCBA 23 of the flow velocity and flow rate sensor away from the temperature chip 25. According to the current flow velocity and flow rate data, the existing magnet can be placed outside the second housing 21 and close to the second sensing chip 28 to adjust the flow velocity and flow rate data.

[0040] like Figure 4 As shown, in one embodiment, the second sensing chip 28 of the flow rate sensor is a Hall chip. This arrangement facilitates the generation of a pulse signal to the magnet.

[0041] like Figure 4 As shown, in one embodiment, the fixing part 12 of the flow velocity flow sensor is a plug, a plugging wire or a retaining spring. This arrangement facilitates buffering and fixing the flow guide part 13.

[0042] like Figure 4 As shown, in one embodiment, the magnet 142 in the second type of blade 141 of the flow velocity flow sensor is a magnet. The arrangement of the magnet facilitates the generation of a pulse signal with the first sensing chip 24.

[0043] like Figure 5 As shown, in one embodiment, the first housing 1 of the flow velocity flow sensor is configured as a cylindrical housing with a hollow interior, and the connecting portion 15 is configured as a cross-shaped hollow connecting plate. This configuration facilitates the circulation of gas and liquid.

[0044] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A flow rate sensor, characterized in that: The sensor assembly comprises a first housing (1) and a sensor component (2). The first housing (1) is provided with a through hole (11) which passes through the first housing (1). A fixing portion (12), a flow guide portion (13), an impeller (14) and a connecting portion (15) are sequentially provided in the through hole (11). One end of the impeller (14) is rotatably connected to the connecting portion (15). The other end of the impeller (14) is rotatably connected to the flow guide portion (13). The centers of the impeller (14), the connecting portion (15) and the guide wheel portion are all on the same axis. The fixing portion (12) is located on a side of the flow guide portion (13) away from the impeller (14). The fixing portion (12) is used to fix the flow guide portion (13). The guide portion (13) comprises a plurality of blades (131) of the same type arranged along the circumferential direction, and the angles between adjacent blades (131) of the same type are equal. The impeller (14) comprises a plurality of second-type blades (141), the included angles between adjacent second-type blades (141) are equal, magnets (142) are respectively arranged in two second-type blades (141) on the same radial direction, and when the impeller (14) rotates, the plurality of second-type blades (141) respectively correspond to the signal collection ends of the sensor assembly (2).

2. The flow velocity sensor according to claim 1, characterized in that: The sensor assembly (2) comprises a second housing (21), the second housing (21) being connected to the first housing (1), a sealed housing (22) being arranged inside the second housing (21), a PCBA (23) and a first sensing chip (24) being arranged inside the sealed housing (22), the PCBA (23) being installed inside the second housing (21), the first sensing chip (24) being installed at one end of the PCBA (23) close to the impeller (14), and the first sensing chip (24) corresponding to the second type of blades (141) of the impeller (14).

3. The flow velocity sensor according to claim 2, characterized in that: The first sensing chip (24) is a magnetic chip or a Hall chip.

4. The flow velocity sensor according to claim 2, characterized in that: A temperature chip (25) is provided at one end of the PCBA (23) close to the impeller (14), and the temperature chip (25) is located on one side of the first sensing chip (24). A cable (26) and a display light (27) are provided on the second housing (21), and the connection ends of the cable (26) and the display light (27) are respectively connected to the PCBA (23).

5. The flow velocity sensor according to claim 2, characterized in that: A second sensing chip (28) is disposed at one end of the PCBA (23) away from the temperature chip (25).

6. The flow velocity sensor according to claim 5, characterized in that: The second sensing chip (28) is a Hall chip.

7. The flow velocity sensor according to claim 1, characterized in that: The fixing part (12) is a plug, a plugging wire or a retaining spring.

8. The flow velocity sensor according to claim 1, characterized in that: The magnet (142) in the second type of blade (141) is a magnet.

9. The flow velocity sensor according to claim 1, characterized in that: The first shell (1) is configured as a cylindrical shell with a hollow interior, and the connecting portion (15) is configured as a cross-shaped hollow connecting plate.

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