Water tank full level alarm device

Abstract

The utility model provides a kind of water tank full water level alarm device, comprising: water tank;Detection component is arranged outside the water tank, including outer mounting seat and magnetic induction switch, outer mounting seat is installed on the outer wall of water tank, magnetic induction switch is installed on outer mounting seat, and its working surface is towards the chamber;Floating assembly, including inner mounting seat and float, the inner mounting seat is fixed on the inner wall of water tank, the float is vertically slidably fitted on the inner mounting seat and can slide up and down, the float is equipped with towards the magnetic induction switch and for triggering the magnet of the magnetic induction switch, when the float moves to upper limit position with water level, the magnet can trigger the magnetic induction switch and make the magnetic induction switch emit induction signal.The utility model water tank full water level alarm device realizes non-contact liquid level detection, effectively avoids the problem that traditional electrode type sensor is easy to be corroded and scale, improves the stability and environmental adaptability of device in long-term operation.

Description

Technical Field

[0001] This utility model relates to a portable air conditioner, and more particularly to a water tank full water level alarm device. Background Technology

[0002] In portable air conditioning units, condensation is an unavoidable phenomenon. When the refrigerant absorbs heat from the indoor air through the evaporator, water vapor in the air condenses into water droplets, which typically collect in the condensate pan inside the air conditioner. To prevent this condensate from overflowing and causing equipment damage or water pollution, a condensate tank is designed to store it. The condensate tank's water level detection function is particularly important; it can monitor the water level in the tank in real time, and once the water level reaches the preset safety limit, it can automatically trigger an alarm or automatically stop the air conditioner to prevent various problems caused by water tank overflow.

[0003] Existing water tank level detection devices typically employ float switches or electrode sensors. Float switches use the movement of a float to activate mechanical contacts or magnetic components, but their structure can be complex, and their performance may be limited in confined spaces or situations requiring high reliability. Electrode sensors determine water level by detecting the conductivity of the water, but they are sensitive to water quality, and long-term use may lead to electrode corrosion. Furthermore, the installation and securing methods of some existing devices may not be secure or convenient enough, affecting their reliability and widespread adoption in practical applications. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a water tank full water level alarm device that is simple in structure, easy to install, reliable in detection, long in service life, and can effectively avoid the risk of overflow.

[0005] This utility model provides a water tank full water level alarm device, which includes:

[0006] Water tank 2, wherein a chamber for receiving water is formed inside the water tank 2;

[0007] The detection component 3 is disposed outside the water tank 2 and includes an external mounting base 32 and a magnetic induction switch 33. The external mounting base 32 serves as the mounting carrier for the magnetic induction switch 33 and is mounted on the outer wall of the water tank 2. The magnetic induction switch 33 is mounted on the external mounting base 32 and its working surface faces the chamber.

[0008] The floating component 4 is disposed inside the water tank 2 and located at the same end as the detection component 3. It includes an inner mounting base 41 and a float 42. The inner mounting base 41 is fixed to the inner wall of the water tank 2. The float 42 is vertically slidably mounted on the inner mounting base 41 and can slide up and down. The float 42 is provided with a magnet facing the magnetic induction switch 33 and used to trigger the magnetic induction switch 33. When the float 42 moves to the upper limit position with the water level, the magnet can trigger the magnetic induction switch 33 and make the magnetic induction switch 33 emit a sensing signal.

[0009] Furthermore, it also includes a connecting seat 31 fixed to the side wall of the water tank 2. The end of the connecting seat 31 is connected to the air conditioner base to fix the water tank 2. The external mounting seat 32 is mounted on the connecting seat 31.

[0010] Furthermore, the connecting seat 31 is S-shaped and is formed by bending a metal plate.

[0011] Furthermore, the connecting seat 31 includes a first connecting portion 314 for connecting to the side wall of the water tank 2. The head of the first connecting portion 314 is bent in the direction away from the water tank to form a second connecting portion 313. The end of the second connecting portion 313 is bent in the opposite direction to form a third connecting portion 312. The end of the third connecting portion 312 is bent to form a fourth connecting portion 311 for connecting to the air conditioner base. The external mounting seat 32 is mounted on the first connecting portion 314.

[0012] Furthermore, the connecting seat 31 is provided with a positioning opening 3140 and a positioning hole 3141. The outer mounting seat 32 includes an outer mounting seat body 321 that can fit against the outer wall of the water tank. The outer side of the outer mounting seat body 321 is provided with a positioning boss 322 that has the same cross-sectional shape as the positioning opening 3140 and can pass through the positioning opening 3140. The first end of the positioning boss 322 extends radially outward and forms a snap-fit ​​part 323. The second end of the outer mounting seat body 321 is provided with a mounting post 325 that can pass through the positioning hole 3141. The mounting post 325 has a mounting hole for connecting with the water tank.

[0013] Furthermore, the two sides and / or tail of the first connecting portion 314 are bent in the direction away from the water tank to form a reinforcing portion 315.

[0014] Furthermore, the positioning boss 322 is provided with a mounting groove for mounting the magnetic induction switch 33, and the mounting groove is provided with a positioning post 324 for positioning the magnetic induction switch 33.

[0015] Furthermore, the positioning boss 322 is composed of several transverse and / or longitudinal reinforcing ribs.

[0016] Furthermore, the float 42 is formed with a groove 420 for accommodating the inner mounting base 41 and having an open upper end. The side wall of the groove 420 is provided with a strip-shaped groove facing the detection component 3. The length direction of the strip-shaped groove is parallel to the length direction of the groove 420. The magnet is mounted on the top of the float 42.

[0017] Furthermore, the inner wall of the slide groove 420 is provided with a strip-shaped guide groove 421, and the side wall of the inner mounting base 41 is provided with a strip-shaped protrusion 411, the strip-shaped protrusion 411 being located within the strip-shaped guide groove 421.

[0018] Furthermore, it also includes upright plates 12 and support plates 14 located on both sides of the water tank. The detection component is disposed on the upright plate 12, and the support plate 14 is provided with an elastic component 141. The elastic component 141 causes the water tank to have a tendency to move closer to the upright plate 12 and causes the floating component in the water tank to fit against the detection component on the upright plate 12.

[0019] This utility model relates to a water tank full level alarm device. The magnetic induction switch is positioned outside the water tank, preventing contact between the switch and the internal liquid, thus improving its lifespan and reliability. The float of the floating component is vertically slidably mounted on the inner mounting base, resulting in a simple structure and reliable operation. The magnet stably follows the water level and triggers the external magnetic induction switch. The connecting base design allows for easy mounting to structures such as air conditioner bases, simplifying the installation process. The S-shaped design and reinforced sections enhance the connection reliability, structural strength, and operational stability of the connecting base, ensuring the magnetic induction switch fits snugly against the water tank and preventing deformation or displacement under stress, thus guaranteeing detection accuracy. The outer mounting base, through positioning bosses and mounting columns, cooperates with the connecting base for quick positioning and installation, offering convenient assembly, high connection strength, and good fit. This utility model combines the magnetic induction principle with a mechanical floating structure to achieve non-contact liquid level detection, effectively avoiding the corrosion and scaling problems of traditional electrode sensors, and improving the device's stability and environmental adaptability during long-term operation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the installation of the water tank full water level alarm device of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the water tank full water level alarm device of this utility model;

[0022] Figure 3 This is an exploded structural diagram of the water tank full water level alarm device of this utility model;

[0023] Figure 4 This is a cross-sectional view of the water tank full water level alarm device of this utility model;

[0024] Figure 5 for Figure 4 Enlarged view of section A in the middle;

[0025] Figure 6 for Figure 4 Enlarged view of section B;

[0026] Figure 7 This is an exploded structural diagram of the detection component of the water tank full water level alarm device of this utility model.

[0027] Figure 8 This is a schematic diagram of the floating component of the water tank full water level alarm device of this utility model;

[0028] Figure 9 This is a cross-sectional view of the floating component of the water tank full water level alarm device of this utility model;

[0029] Figure 10 This is an exploded structural diagram of the floating component of the water tank full water level alarm device of this utility model;

[0030] Figure 11 This is a schematic diagram of the structure of Embodiment 2 of the water tank full water level alarm device of this utility model;

[0031] Figure 12 This is a cross-sectional view of Embodiment 2 of the water tank full water level alarm device of this utility model.

[0032] In the diagram: 11. Base body; 12. Vertical plate; 14. Support plate; 141. Elastic component; 2. Water tank; 3. Detection component; 31. Connecting seat; 311. Fourth connecting part; 312. Third connecting part; 313. Second connecting part; 314. First connecting part; 3140. Positioning opening; 3141. Positioning hole; 315. Reinforcing part; 32. External mounting seat; 321. External mounting seat body; 322. Positioning boss; 323. Snap-fit ​​part; 324. Positioning post; 325. Mounting post; 33. Magnetic induction switch; 4. Floating component; 41. Inner mounting seat; 411. Strip protrusion; 42. Float; 420. Slide groove; 421. Strip guide groove. Detailed Implementation

[0033] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0034] See Figures 1-10 This utility model provides a water tank full water level alarm device, which includes a water tank 2, a detection component 3 and a floating component 4.

[0035] Water tank 2 has a cavity formed inside for receiving water.

[0036] The detection component 3 is set outside the water tank 2 and includes an external mounting base 32 and a magnetic induction switch 33. The external mounting base 32 serves as the mounting carrier for the magnetic induction switch 33 and is used to install the magnetic induction switch 33. The external mounting base 32 is installed on the outer wall of the water tank 2, and the magnetic induction switch 33 is installed on the external mounting base 32. The working surface of the magnetic induction switch 33 faces the chamber, specifically, it faces the floating component 4 inside the chamber.

[0037] The floating component 4 is installed inside the water tank 2, and it is located at the same end of the water tank as the detection component 3, that is, on one side wall of the water tank. The floating component 4 includes an inner mounting base 41 and a float 42. The inner mounting base 41 is fixed to the inner wall of the water tank 2, and the float 42 is vertically slidably mounted on the inner mounting base 41, which can slide up and down (float). A magnet is provided on the float 42, which faces the magnetic induction switch 33. The magnet is used to trigger the magnetic induction switch 33 when the water level is full. When the float 42 moves to the upper limit position with the water level, that is, the set full water level, the magnet can trigger the magnetic induction switch 33, thereby causing the magnetic induction switch 33 to emit a sensing signal to realize the alarm. The floating component 4 and the detection component 3 are located near the full water level position.

[0038] This application employs non-contact detection, placing the magnetic induction switch 33 on the outside of the water tank 2. The magnet used to trigger the switch is installed on the float 42 inside the water tank. This eliminates the need for the magnetic induction switch 33 to directly contact the water, fundamentally avoiding the corrosion, dirt accumulation, and water quality-related malfunctions common in traditional water tank sensors. This significantly improves the long-term reliability and lifespan of the alarm device and reduces maintenance costs. The detection component and the float component are assembled independently and are both simply mechanically fixed to the outer and inner walls of the water tank, requiring no complex modifications to the water tank. It is easy to process and has low manufacturing cost; the float 42 slides precisely vertically on the inner mounting base 41 to ensure that it can accurately follow the changes in water level. When the water level reaches the preset upper limit (i.e., full water level), the magnet on the float 42 can stably approach and trigger the external magnetic induction switch 33, so that the alarm signal can be issued in a timely and accurate manner with a fast response speed, thereby effectively preventing water tank overflow and avoiding potential losses and safety hazards; and when parts need to be replaced, the outer mounting base can be directly removed from the outside or the float can be taken out from the inside without emptying the water tank, reducing maintenance difficulty and downtime costs.

[0039] To facilitate the installation of the detection components and improve the stability of the water tank installation, preventing the water tank from deflecting or shaking and affecting the detection accuracy and reliability, this application also includes a connecting seat 31. The connecting seat 31 is fixed to the side wall of the water tank 2, and the end of the connecting seat 31 is connected to the air conditioner base, thereby strengthening the fixation of the water tank 2 and preventing shaking. The external mounting seat 32 is installed on the connecting seat 31. In this embodiment, the air conditioner base includes a base body 11 and a vertical plate 12 disposed on the base body 11. The water tank is placed on the base body 11, and the connecting seat 31 is fixedly connected to the vertical plate. The connecting seat is directly fixedly connected to the air conditioner base, forming a secondary reinforcement of the water tank, effectively resisting the water tank deflection, tilting and shaking caused by equipment operation vibration, external collision or water flow impact, avoiding the relative position offset between the detection components and the floating components caused by the displacement of the water tank, ensuring that the upper limit position of the float-triggered magnetic induction switch always accurately corresponds to the preset full water level, eliminating water level detection error from the source.

[0040] In this application, the connecting seat 31 is S-shaped and is formed by bending a metal plate. Specifically, the connecting seat 31 includes a first connecting part 314 for connecting to the side wall of the water tank 2. The first connecting part 314 has a sheet-like (plate-like) structure. The head of the first connecting part 314 is bent 90 degrees away from the water tank to form a second connecting part 313. The end of the second connecting part 313 is bent 90 degrees in the opposite direction to form a third connecting part 312. The end of the third connecting part 312 is bent 90 degrees towards the water tank to form a fourth connecting part 311. The fourth connecting part 311 is used to connect to the air conditioner base (vertical plate). The external mounting seat 32 is mounted on the first connecting part 314. The connecting seat 31 is made of... After being bent 90 degrees multiple times, the metal plate forms an S-shaped cross-section. Compared to flat plates or simple L-shaped structures, the material fibers at the bends are squeezed together, significantly improving the bending and torsional strength of the connector. This effectively resists the torque generated by the water tank's own weight, water flow impact, and external vibrations, preventing water tank displacement caused by connector deformation. This ensures the relative positional accuracy of the detection component and the floating component from the structural source. The S-shaped connector allows the weight and vibration load of the water tank to be transferred to the air conditioner base through multiple paths at each connection point, avoiding stress concentration at a single connection point and preventing local deformation of the water tank sidewall that could affect the positional accuracy and reliability of the detection component and internal float.

[0041] To achieve rapid connection and improve connection reliability, this application provides a positioning opening 3140 and a positioning hole 3141 on the connecting seat 31. In this embodiment, they are located on the first connecting part 314. The positioning opening 3140 is rectangular, and the positioning hole 3141 is circular. The size of the positioning opening 3140 is larger than that of the positioning hole 3141. The outer mounting seat 32 includes an outer mounting seat body 321, which is a sheet or plate structure that can fit against the outer wall of the water tank. On the outer side of the outer mounting seat body 321, there is a positioning boss 322 corresponding to the positioning opening 3140 and a mounting post 325 corresponding to the positioning hole 3141. The cross-section of the positioning boss 322 is the same as the cross-sectional shape of the positioning opening 3140, and exactly... The positioning opening 3140 allows for quick positioning of both components. The first end of the positioning boss 322 extends outward toward the side away from the mounting post, forming a snap-fit ​​part 323. The mounting post 325 is located at the second end of the outer mounting base body, i.e., the end away from the snap-fit ​​part. A mounting hole for connecting to the water tank is passed through the mounting post 325. During assembly, the outer mounting base 32 is placed inside the connecting base 31, i.e., near the water tank, so that the snap-fit ​​part passes outward through the positioning opening and contacts the end of the positioning opening. Then, using the snap-fit ​​part as a hinge point, the other end of the outer mounting base is rotated until the positioning boss and the mounting post pass through the positioning opening and the positioning hole respectively, so that the outer mounting base fits against the water tank and the connecting base fits against the outer mounting base, and then is fixed with bolts. The cross-sectional shape of the positioning opening and the positioning boss are perfectly matched, and the mounting post (cylindrical) and the positioning hole (round hole) correspond precisely, forming a unique shape matching mechanism. This can quickly guide the outer mounting seat and the connecting seat to align, avoiding orientation problems in traditional installation, achieving fast and accurate positioning, and improving assembly efficiency. After the snap-fit ​​part passes through the positioning opening, it contacts the end of the opening, forming a temporary hinge point. At this time, the outer mounting seat can rotate around the snap-fit ​​part, which is convenient to operate and simplifies the assembly process. After the positioning boss and the mounting post pass through the corresponding opening and hole, the outer mounting seat fits tightly against the connecting seat and the outer wall of the water tank, and is then fastened with bolts, forming a dual constraint of mechanical limit and fastener. Compared with fixing by bolts alone, it increases the contact area, which can effectively resist connection loosening caused by equipment operation vibration or external impact, and improve long-term reliability.

[0042] To improve structural strength, the two sides and tail of the first connecting part 314 are bent at 90 degrees in the direction away from the water tank to form a reinforcing part 315. The structure is simple and easy to process, which realizes a comprehensive improvement in structural strength, rigidity and stability. It solves the problem of insufficient installation accuracy caused by easy deformation of flat plate connection, while taking into account process economy and operation convenience, and provides a guarantee for accurate and stable testing.

[0043] In this embodiment, the positioning boss 322 is composed of several transverse and / or longitudinal reinforcing ribs. The transverse reinforcing ribs and the longitudinal reinforcing ribs form a grid-like or mesh-like skeleton, which has high structural strength and good torsional strength. At the same time, it reduces the amount of material used and lowers the manufacturing cost.

[0044] In order to achieve rapid installation of the magnetic induction switch, this application provides an installation groove for installing the magnetic induction switch 33 on the positioning boss 322. The installation groove is provided with a positioning post 324 for positioning the magnetic induction switch 33, which can improve the assembly efficiency and accuracy of the magnetic induction switch. In this embodiment, the installation groove is located between two adjacent transverse and longitudinal reinforcing ribs, which reduces the protrusion distance of the magnetic induction switch.

[0045] The floating components in this application are described below;

[0046] A groove 420 is formed on the float 42 to accommodate the inner mounting seat 41. The upper end of the groove 420 is open, allowing the inner mounting seat to slide into the groove 420 from top to bottom. A strip-shaped groove is formed on the side wall of the groove 420, facing the detection component 3, with its length parallel to the length direction of the groove 420. This provides space for the connection between the inner mounting seat and the inner wall of the water tank. When the float moves to the upper limit position, the bottom surface of the inner mounting seat contacts the bottom surface of the groove, achieving a limit position. A magnet is installed on the top of the float 42 (not shown in the figure), at the upper end of the float. The device features mounting holes for installing the magnet bracket and magnet, which simultaneously seal the upper open end of the slide 420, serving as the limit end for the float. The slide trough is short, meaning the float's sliding stroke is short, requiring only one trigger end (float at the upper limit position) and one non-trigger end (not at the upper limit position). Its structure is simple and compact, with low manufacturing costs, convenient assembly, and stable and reliable operation. When the water level rises, causing the float to move upwards to the trigger end, the magnet approaches the magnetic induction switch in the detection component, triggering the switch to generate a signal and triggering an alarm, indicating that the water level in the tank has reached the preset high level, i.e., full. When the water level drops, the float moves downwards under gravity, moving away from the trigger position. At this time, the magnet cannot trigger the magnetic induction switch. The float's stroke and volume are small, effectively reducing material costs and space occupation. When the water level is low, the water does not contact the float; however, when the water level is almost full, the water surface contacts the float and causes it to move upwards, triggering the alarm mechanism. The entire process is responsive and reliable. Because the float only comes into contact with water when it is close to full level, the risk of wear and corrosion caused by long-term immersion is reduced, thus extending its service life.

[0047] In this application, one or more strip-shaped guide grooves 421 are provided on the inner wall of the slide groove 420. At the same time, strip-shaped protrusions 411 corresponding to the strip-shaped guide grooves are provided on the side wall of the inner mounting base 41. The strip-shaped protrusions 411 are located inside the strip-shaped guide grooves 421 to achieve precise sliding and avoid deflection. In this embodiment, at least one strip-shaped guide groove is provided on the side wall away from the detection component. The cooperation structure of the strip-shaped guide grooves and strip-shaped protrusions effectively improves the stability of the float during the sliding process, prevents the inner mounting base from twisting or jamming during movement, and thus improves the detection accuracy and usage stability.

[0048] Example 2, see Figures 11-12 The difference between this embodiment and the above embodiments lies in the installation position of the detection component. In this embodiment, a vertical plate 12 and a support plate 14 are also included. The vertical plate 12 and the support plate 14 are located on both sides of the water tank, specifically at the two ends of the short side. That is, the distance between the vertical plate 12 and the support plate 14 is basically the same as the thickness (width) of the water tank. The detection component is set on the vertical plate 12. At the same time, an elastic component 141 is provided on the support plate 14. In this embodiment, the elastic component 141 is a spring sheet, which makes the water tank tend to move closer to the vertical plate 12, so that the floating component inside the water tank fits the detection component on the vertical plate 12, and avoids the floating component inside the water tank from detaching from the detection component on the vertical plate 12, which would affect the detection accuracy.

[0049] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A water tank full level alarm device, characterized in that, include: A water tank, wherein a chamber for receiving water is formed inside the water tank; The detection component, located outside the water tank, includes an external mounting base and a magnetic induction switch. The external mounting base serves as the mounting carrier for the magnetic induction switch and is located on the outer wall of the water tank. The magnetic induction switch is mounted on the external mounting base, with its working surface facing the chamber. A floating assembly, disposed within the water tank and located at the same end as the detection assembly, includes an inner mounting base and a float. The inner mounting base is fixed to the inner wall of the water tank. The float is vertically slidable on the inner mounting base and can slide up and down. The float is provided with a magnet facing the magnetic induction switch and used to trigger the magnetic induction switch. When the float moves to the upper limit position with the water level, the magnet can trigger the magnetic induction switch and cause the magnetic induction switch to emit a sensing signal.

2. The water tank full level alarm device as described in claim 1, characterized in that: It also includes a connecting seat fixed to the side wall of the water tank, the end of which is connected to the air conditioner base to fix the water tank, and the external mounting seat is installed on the connecting seat.

3. The water tank full level alarm device as described in claim 2, characterized in that: The connector is S-shaped and formed by bending a metal plate.

4. The water tank full level alarm device as described in claim 2, characterized in that: The connector includes a first connector for connecting to the side wall of the water tank, the head of the first connector is bent in the direction away from the water tank to form a second connector, the end of the second connector is bent in the opposite direction to form a third connector, the end of the third connector is bent to form a fourth connector for connecting to the air conditioner base, and the external mounting base is mounted on the first connector.

5. The water tank full level alarm device as described in claim 2, characterized in that: The connecting seat has a positioning opening and a positioning hole. The outer mounting seat includes an outer mounting seat body that can fit against the outer wall of the water tank. The outer side of the outer mounting seat body has a positioning boss with the same cross-sectional shape as the positioning opening and that can pass through the positioning opening. The first end of the positioning boss extends radially outward and forms a snap-fit ​​part. The second end of the outer mounting seat body has a mounting post that can pass through the positioning hole. The mounting post has a mounting hole for connecting with the water tank.

6. The water tank full level alarm device as described in claim 4, characterized in that: The two sides and / or the tail of the first connecting part are bent in the direction away from the water tank to form a reinforcing part.

7. The water tank full level alarm device as described in claim 5, characterized in that: The positioning boss has a mounting groove for mounting a magnetic induction switch, and the mounting groove has a positioning post for positioning the magnetic induction switch.

8. The water tank full level alarm device as described in claim 5, characterized in that: The positioning boss is composed of several horizontal and / or vertical reinforcing ribs.

9. The water tank full level alarm device as described in claim 1, characterized in that: The float has a groove formed on it to accommodate the inner mounting base and has an open top. The side wall of the groove has a strip-shaped groove facing the detection component. The length direction of the strip-shaped groove is parallel to the length direction of the groove. The magnet is mounted on the top of the float.

10. The water tank full level alarm device as described in claim 1, characterized in that: It also includes upright plates and support plates located on both sides of the water tank. The detection component is disposed on the upright plate, and the support plate is provided with an elastic component. The elastic component causes the water tank to tend to move closer to the upright plate and causes the floating component inside the water tank to adhere to the detection component on the upright plate.

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