Liquid level sensor and duct type air conditioner

Abstract

The embodiment of the utility model provides a liquid level sensor and a duct type air conditioner, the liquid level sensor comprises a sensor body, the sensor body comprises a rotary connecting shaft and a liquid level sensing shaft, the liquid level sensing shaft is connected to the peripheral wall of the rotary connecting shaft, and the liquid level sensing shaft is provided with a sensing part; the rotary connecting shaft is provided with a wiring cavity, an opening in one end of the wiring cavity is formed in the end portion of one end of the rotary connecting shaft, and an opening in the other end of the wiring cavity is formed in the area, connected with the liquid level sensing shaft, of the peripheral wall of the rotary connecting shaft. And the signal wire penetrates through the wiring cavity to be electrically connected with the sensing part of the liquid level sensing shaft.

Description

Technical Field

[0001] This application relates to the field of liquid level detection technology, specifically to a liquid level sensor and a duct air conditioner. Background Technology

[0002] In related technologies, some liquid level sensors can be rotated for position adjustment. However, when such liquid level sensors are rotated for adjustment, the signal wires are easily pulled and damaged, which in turn causes the liquid level sensor to fail to perform measurement and signal transmission normally. Utility Model Content

[0003] This application provides a liquid level sensor and a duct air conditioner, which can prevent the signal line from being pulled and damaged when the liquid level sensor is rotated and adjusted, thus ensuring the structural safety of the liquid level sensor during the rotation process.

[0004] On one hand, this application provides a liquid level sensor, including: a sensor body, including a rotating connecting shaft and a liquid level sensing shaft, the liquid level sensing shaft being connected to the peripheral wall of the rotating connecting shaft, the liquid level sensing shaft having a sensing part; the rotating connecting shaft having a wiring cavity, one end of the wiring cavity opening at one end of the rotating connecting shaft, and the other end opening in a region on the peripheral wall of the rotating connecting shaft connected to the liquid level sensing shaft; a signal line passing through the wiring cavity to be electrically connected to the sensing part of the liquid level sensing shaft.

[0005] In some embodiments, the signal line includes multiple core wires and an insulating sheath. The multiple core wires are insulated from each other and pass through the insulating sheath. The multiple core wires pass through the wiring cavity to be electrically connected to the sensing part of the liquid level sensing shaft. The insulating sheath and the rotating connecting shaft are spaced apart.

[0006] In some embodiments, the insulating sheath is disposed outside the wiring cavity.

[0007] In some embodiments, the wiring cavity includes a first cavity and a second cavity connected in sequence. The first cavity opens at one end of the rotating connecting shaft and extends along the axial direction of the rotating connecting shaft. The second cavity opens in the region on the peripheral wall of the rotating connecting shaft that connects to the liquid level sensing shaft and extends along a first direction. The first direction is perpendicular to or inclined to the axial direction of the rotating connecting shaft.

[0008] In some embodiments, the liquid level sensor includes a float disposed on the liquid level sensing shaft.

[0009] In some embodiments, the liquid level sensor further includes a counterweight, which is disposed on the liquid level sensing shaft.

[0010] In some embodiments, the liquid level sensor further includes a limiting member, and a limiting groove is provided at one end of the liquid level sensing shaft away from the rotating connecting shaft, and the limiting member is engaged in the limiting groove; when a component is sleeved on the liquid level sensing shaft, the limiting member restricts the component between the limiting member and the rotating connecting shaft.

[0011] In some embodiments, the rotating connecting shaft includes a shaft body and two connecting necks, the liquid level sensing shaft is connected to the peripheral wall of the shaft body, the two connecting necks are disposed at opposite ends of the shaft body, and the wiring cavity extends from the end of one of the connecting necks to the peripheral wall of the shaft body.

[0012] In some embodiments, the rotating connecting shaft and the liquid level sensing shaft are connected vertically or at an angle.

[0013] On the other hand, embodiments of this application provide a duct air conditioner that includes the liquid level sensor described in any of the above embodiments.

[0014] In this embodiment, a wiring cavity is provided on the rotating connecting shaft. The signal line passes through the wiring cavity and is electrically connected to the sensing part of the liquid level sensing shaft. In this way, when the liquid level sensor is rotated for adjustment, the signal line can rotate synchronously with the rotating connecting shaft, avoiding significant relative movement between the signal line and the rotating connecting shaft. This prevents the signal line from being pulled and damaged due to relative movement, effectively ensuring the structural safety of the liquid level sensor during rotation. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 These are exploded structural diagrams of liquid level sensors provided in some embodiments of this application;

[0017] Figure 2 yes Figure 1 Enlarged structural diagram of point M of the liquid level sensor;

[0018] Figure 3 This is a cross-sectional view of the rotating connecting shaft of a liquid level sensor provided in some embodiments of this application.

[0019] Explanation of key component symbols:

[0020] 1-Liquid level sensor, 10-Rotating connecting shaft, 11-Way cavity, 111-First cavity, 112-Second cavity, 12-Shaft body, 13-Connecting neck, 20-Liquid level sensing shaft, 21-Limiting groove, 30-Signal line, 31-Core wire, 32-Insulating sheath, 40-Float, 50-Counterweight, 60-Limiting component. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0024] The use of "applies to" or "configured to" in this application implies open and inclusive language, which does not exclude the applicability to or configuration to devices performing additional tasks or steps. Additionally, the use of "based on" implies openness and inclusivity, because processes, steps, calculations, or other actions "based on" one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0025] In this application, the term "exemplary" is used to mean "used as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use this application. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that this application can be made without using these specific details. In other instances, well-known structures and processes are not described in detail to avoid obscuring the description of this application with unnecessary detail. Therefore, this application is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0026] like Figures 1 to 3 As shown, in one aspect, this application provides a liquid level sensor 1, which includes a sensor body and a signal line 30. This can prevent the signal line 30 from being pulled and damaged when the liquid level sensor 1 is rotated and adjusted, thus ensuring the structural safety of the liquid level sensor 1 during the rotation process.

[0027] The sensor body includes a rotating connecting shaft 10 and a liquid level sensing shaft 20, with the liquid level sensing shaft 20 connected to the peripheral wall of the rotating connecting shaft 10. The rotating connecting shaft 10 can be rotatably connected to a sensor mounting component (not shown), allowing the liquid level sensor 1 to be mounted on the sensor mounting component and enabling the liquid level sensor 1 to be rotated and adjusted on the sensor mounting component. The liquid level sensing shaft 20 is provided with a sensing part (not shown), which can be immersed in the liquid or float on the liquid surface to measure the liquid level and output an electrical signal based on the measurement result.

[0028] Here, the rotating connecting shaft 10 is provided with a wiring cavity 11. One end of the wiring cavity 11 opens at one end of the rotating connecting shaft 10, and the other end opens in the area on the peripheral wall of the rotating connecting shaft 10 where the liquid level sensing shaft 20 is connected. The signal line 30 passes through the wiring cavity 11 and is electrically connected to the sensing part of the liquid level sensing shaft 20 to provide a power signal to the sensing part and transmit the electrical signal measured by the sensing part outward.

[0029] Compared with related technologies, the liquid level sensor 1 provided in this application embodiment has a wiring cavity 11 on the rotating connecting shaft 10. The signal line 30 passes through the wiring cavity 11 and is electrically connected to the sensing part of the liquid level sensing shaft 20. In this way, when the liquid level sensor 1 is rotated for adjustment, the signal line 30 can rotate synchronously with the rotating connecting shaft 10, avoiding significant relative movement between the signal line 30 and the rotating connecting shaft 10, thereby avoiding the signal line 30 from being pulled and damaged due to relative movement, and effectively ensuring the structural safety of the liquid level sensor 1 during rotation.

[0030] The type of signal line 30 can be determined according to actual needs, and this application embodiment does not limit it. In some embodiments, the signal line 30 may include multiple core wires 31 and an insulating sheath 32. The multiple core wires 31 are mutually insulated and pass through the insulating sheath 32, which wraps, constrains, and protects the multiple core wires 31; and the multiple core wires 31 pass through the wiring cavity 11 to be electrically connected to the sensing part of the liquid level sensing shaft 20, so as to provide a power signal to the sensing part and transmit the electrical signal measured by the sensing part to the outside. Here, the insulating sheath 32 and the rotating connecting shaft 10 are spaced apart, so that the insulating sheath 32 and the rotating connecting shaft 10 are not connected. In this way, when the rotating connecting shaft 10 drives the liquid level sensing shaft 20 to rotate and adjust, the insulating sheath 32 will not rotate or twist, thereby avoiding damage to the multiple core wires 31 due to torsion and pulling caused by the twisting of the insulating sheath 32, and ensuring the structural safety of the multiple core wires 31 during the rotation of the liquid level sensor 1.

[0031] In some examples, the insulating sleeve 32 can be disposed outside the wiring cavity 11. In other words, the insulating sleeve 32 can wrap around the portion of the multiple core wires 31 located outside the wiring cavity 11, and the insulating sleeve 32 and the rotating connecting shaft 10 are spaced apart, so that the insulating sleeve 32 can movably wrap around the outside of the multiple core wires 31. In this way, when the rotating connecting shaft 10 drives the liquid level sensing shaft 20 to rotate and adjust, the insulating sleeve 32 will not be subjected to the rotational force of the rotating connecting shaft 10, so the insulating sleeve 32 will not rotate or twist; thus, it can avoid the torsional and pulling damage to the multiple core wires 31 caused by the twisting of the insulating sleeve 32, and ensure the structural safety of the multiple core wires 31 during the rotation of the liquid level sensor 1.

[0032] The structure of the wiring cavity 11 can be determined according to actual needs, and this application embodiment does not limit it. In some embodiments, the wiring cavity 11 may include a first cavity 111 and a second cavity 112 connected in sequence. The first cavity 111 opens at one end of the rotating connecting shaft 10 and extends along the axial direction of the rotating connecting shaft 10. The second cavity 112 opens in the area on the peripheral wall of the rotating connecting shaft 10 that connects to the liquid level sensing shaft 20, and extends along a first direction, which is perpendicular to or inclined to the axial direction of the rotating connecting shaft 10. In this way, the signal line 30 can enter the first cavity 111 from the opening end of the first cavity 111, pass through the first cavity 111 and the second cavity 112 in sequence, and exit from the opening end of the second cavity 112, thereby making an electrical connection with the sensing part of the liquid level sensing shaft 20.

[0033] In some embodiments, the liquid level sensor 1 may include a float 40 disposed on the liquid level sensing shaft 20. The float 40 floats on the liquid surface and can rise and fall with changes in the liquid level, causing a positional change between the float 40 and the sensing element of the liquid level sensing shaft 20. In this way, the sensing element of the liquid level sensing shaft 20 can measure the positional change of the float 40, and thus indirectly measure the liquid level change by measuring the positional change of the float 40.

[0034] In some embodiments, the liquid level sensor 1 may further include a counterweight 50, which is disposed on the liquid level sensing shaft 20. By providing the counterweight 50, the weight of the liquid level sensor 1 can be increased, thereby enabling the liquid level sensor 1 to adaptively rotate under its own weight.

[0035] In some embodiments, the liquid level sensor 1 may further include a limiting member 60. A limiting groove 21 may be provided at one end of the liquid level sensing shaft 20 away from the rotating connecting shaft 10, and the limiting member 60 is engaged in the limiting groove 21. When components such as the aforementioned float 40 and counterweight 50 are sleeved on the liquid level sensing shaft 20, the limiting member 60 can restrict the components between the limiting member 60 and the rotating connecting shaft 10. The type of limiting member 60 can be determined according to actual needs, and may be, for example, a retaining ring; this embodiment does not limit this.

[0036] In some embodiments, the rotating connecting shaft 10 may include a shaft body 12 and two connecting necks 13. The liquid level sensing shaft 20 is connected to the peripheral wall of the shaft body 12, and the two connecting necks 13 are disposed at opposite ends of the shaft body 12. The wiring cavity 11 extends from the end of one of the connecting necks 13 to the peripheral wall of the shaft body 12. In this way, a rotating connection can be made between the two connecting necks 13 and the sensor mounting component, so that the two connecting necks 13 and the sensor mounting component can be reliably supported and connected, thus better achieving the purpose of installing and engaging the liquid level sensor 1.

[0037] In some embodiments, the rotating connecting shaft 10 and the liquid level sensing shaft 20 can be connected vertically or obliquely. Thus, the liquid level sensing shaft 20 can be vertically or obliquely positioned below the rotating connecting shaft 10; after the rotating connecting shaft 10 is rotatably connected to the sensor mounting, the liquid level sensing shaft 20 can contact the liquid medium, thereby measuring the liquid level. In some examples, the liquid level sensing shaft 20 can be connected to the central region of the rotating connecting shaft 10 along its axial direction.

[0038] On the other hand, this application provides a duct air conditioner that includes the liquid level sensor 1 provided in any of the above embodiments. The duct air conditioner, having the liquid level sensor 1, can prevent the signal line 30 from being pulled and damaged when the liquid level sensor 1 is rotated for adjustment, thus ensuring the structural safety of the liquid level sensor 1 during rotation.

[0039] The liquid level sensor and duct air conditioner provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principle and implementation of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this application. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A liquid level sensor, characterized in that, include: The sensor body includes a rotating connecting shaft and a liquid level sensing shaft. The liquid level sensing shaft is connected to the peripheral wall of the rotating connecting shaft and is provided with a sensing part. The rotating connecting shaft is provided with a wiring cavity. One end of the wiring cavity is open at one end of the rotating connecting shaft, and the other end is open in the area on the peripheral wall of the rotating connecting shaft that is connected to the liquid level sensing shaft. The signal line passes through the wiring cavity to be electrically connected to the sensing part of the liquid level sensing shaft.

2. The liquid level sensor according to claim 1, characterized in that, The signal line includes multiple core wires and an insulating sheath. The multiple core wires are insulated from each other and pass through the insulating sheath. The multiple core wires pass through the wiring cavity to be electrically connected to the sensing part of the liquid level sensing shaft. The insulating sheath and the rotating connecting shaft are spaced apart.

3. The liquid level sensor according to claim 2, characterized in that, The insulating sheath is disposed outside the wiring cavity.

4. The liquid level sensor according to claim 1, characterized in that, The wiring cavity includes a first cavity and a second cavity connected in sequence. The first cavity opens at one end of the rotating connecting shaft and extends along the axial direction of the rotating connecting shaft. The second cavity opens in the area on the peripheral wall of the rotating connecting shaft that connects to the liquid level sensing shaft and extends along a first direction. The first direction is perpendicular to or inclined to the axial direction of the rotating connecting shaft.

5. The liquid level sensor according to claim 1, characterized in that, The liquid level sensor includes a float, which is disposed on the liquid level sensing shaft.

6. The liquid level sensor according to claim 1, characterized in that, The liquid level sensor also includes a counterweight, which is disposed on the liquid level sensing shaft.

7. The liquid level sensor according to claim 1, characterized in that, The liquid level sensor also includes a limiting member. A limiting groove is provided at one end of the liquid level sensing shaft away from the rotating connecting shaft, and the limiting member is engaged in the limiting groove. When a component is sleeved on the liquid level sensing shaft, the limiting member restricts the component between the limiting member and the rotating connecting shaft.

8. The liquid level sensor according to claim 1, characterized in that, The rotating connecting shaft includes a shaft body and two connecting necks. The liquid level sensing shaft is connected to the peripheral wall of the shaft body. The two connecting necks are located at opposite ends of the shaft body. The wiring cavity extends from the end of one of the connecting necks to the peripheral wall of the shaft body.

9. The liquid level sensor according to claim 1, characterized in that, The rotating connecting shaft and the liquid level sensing shaft are connected vertically or at an angle.

10. A ducted air conditioner, characterized in that, The liquid level sensor includes any one of claims 1-9.

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