Liquid level switch for refrigeration air conditioner

Abstract

The utility model discloses a liquid level switch for a refrigeration air conditioner, which comprises a liquid level rod and a floating ball, the floating ball is connected to the liquid level rod in a sliding manner, the liquid level rod is provided with limiting pieces, and the floating ball is positioned between the two limiting pieces; the liquid level rod comprises a first rod body and a second rod body, the first rod body is provided with an inner hole allowing the second rod body to penetrate, the first rod body is provided with an end ring, the second rod body is in threaded connection with a sealing cover, the sealing cover is provided with a convex ring part, the end ring is provided with a threaded groove, and the convex ring part is in threaded connection with the threaded groove in a matched mode. Therefore, relative movement between the first rod body and the second rod body is limited. The water receiving tray is novel in structure, flexible and adjustable in overall length, capable of changing the initial height position of the floating ball in the water receiving tray, applicable to water receiving trays with different heights and high in applicability.

Description

Technical Field

[0001] The utility model belongs to the technical field of liquid level switches, and in particular relates to a liquid level switch for refrigeration and air conditioning. Background Art

[0002] Some large air conditioners produce a lot of condensed water during operation. This condensed water is collected in a water tray. To prevent the condensed water from overflowing the water tray and not being discovered in time, a liquid level switch is usually installed in the casing to monitor the water level in the water tray in real time.

[0003] Existing liquid level switches have the following defects: the length of the float rod cannot be adjusted, which is easily limited by the limited installation space in the air conditioner casing, resulting in the float's starting height position in the water tray being fixed, making it difficult to adapt to water trays of different heights, affecting the precise control of the liquid level.

[0004] The existing patent document (publication number: CN219046272U) discloses a “contact liquid level switch”, which also has the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of the utility model is to solve the above-mentioned technical problems existing in the prior art and to provide a liquid level switch for refrigeration and air conditioning, which has a novel structure and flexible and adjustable overall length, thereby changing the starting height position of the float in the water receiving tray. It can be applied to water receiving trays of different heights and has strong applicability.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A liquid level switch for refrigeration and air conditioning comprises a liquid level rod and a float, the float being slidably connected to the liquid level rod, the liquid level rod being provided with a limit plate, and the float being positioned between the two limit plates. The liquid level rod is characterized in that the liquid level rod comprises a first rod body and a second rod body, the first rod body being provided with an inner hole for passage of the second rod body, the first rod body being provided with an end ring, the second rod body being threadedly connected with a sealing cover, the sealing cover being provided with a raised ring portion, the end ring being provided with a threaded groove, the raised ring portion being threadedly engaged with the threaded groove to restrict relative movement between the first and second rod bodies. The liquid level switch has a novel structure and an adjustable overall length, thereby changing the starting height of the float within the water tray. The switch is adaptable to water trays of varying heights and has strong applicability.

[0008] Furthermore, the liquid level rod is provided with a limiting groove corresponding to the limiting piece. The limiting piece has an opening, and hooks are provided at both ends of the limiting piece to prevent the limiting piece from freely falling out of the limiting groove. The limiting piece is removable and replaceable, which is flexible and convenient, reducing maintenance costs. During installation, the limiting piece is pried open by the hook, and then the limiting piece is snapped into the limiting groove. The hook is released, and the hook blocks the free movement of the limiting piece, so that the limiting piece is fixed to the liquid level rod.

[0009] Furthermore, a sealing ring is sleeved on the second rod body, and a receiving groove is formed between the convex ring portion and the sealing cover, and the receiving groove corresponds to the sealing ring. When the sealing cover is connected to the end ring, the sealing ring is located in the receiving groove, and the sealing cover squeezes the sealing ring, making the sealing ring tightly adhere to the end surface of the end ring, thereby sealing the gap at the connection between the end ring and the second rod body, preventing external water from seeping in through the gap.

[0010] Furthermore, an L-shaped bracket is provided on the liquid level rod, and a strip-shaped through hole is provided on the L-shaped bracket. A nail is inserted into the strip-shaped through hole to fix the L-shaped bracket in the air conditioner casing, which is convenient for installation.

[0011] Furthermore, the L-shaped bracket is provided with triangular ribs, which improve the structural strength of the L-shaped bracket, thereby improving the bearing strength of the L-shaped bracket, making it less prone to deformation and having a long service life.

[0012] Furthermore, the L-shaped bracket is screwed onto the liquid level rod via a threaded sleeve. By rotating the threaded sleeve up and down, the height of the L-shaped bracket on the liquid level rod can be changed, thereby changing the length of the liquid level rod extending into the water tray. The starting height of the float also changes accordingly, making it suitable for water trays of different heights and highly adaptable.

[0013] The utility model has the following beneficial effects due to the adoption of the above technical solution:

[0014] 1. The length of the liquid level rod is flexibly adjustable, thereby changing the starting height position of the float in the water receiving tray, and can be applied to water receiving trays of different heights, with strong applicability. After the length of the second rod body entering the first rod body is determined, the sealing cover is rotated to screw the convex ring part into the threaded groove of the end ring, so that the sealing cover and the end ring are fixed together. Relative movement cannot occur between the first rod body and the second rod body, realizing locking and fixation. The convex ring part is connected with the threaded groove, which extends the sealing path, prevents external water from seeping inward from the gap at the connection between the end ring and the sealing cover, and has good sealing performance.

[0015] When the sealing cover is docked with the end ring, the sealing ring is located in the accommodating groove, and the sealing cover squeezes the sealing ring so that the sealing ring is tightly attached to the end face of the end ring, thereby blocking the gap at the connection between the end ring and the second rod body, preventing external water from seeping in through the gap.

[0016] 2. The limit piece is detachable and replaceable, which is flexible and convenient, reducing maintenance costs. During installation, the limit piece is opened outward by the hook, and then the limit piece is inserted into the limit groove. The hook is released, and the hook blocks the free movement of the limit piece, so that the limit piece is fixed on the liquid level rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings:

[0018] Figure 1This is a structural diagram of a liquid level switch for refrigeration and air conditioning according to the present utility model;

[0019] Figure 2 This is a schematic structural diagram of the first rod body in the present utility model;

[0020] Figure 3 It is a structural schematic diagram of the connection between the second rod body and the limiting plate in the present invention.

[0021] In the figure: 1-liquid level rod; 2-float; 3-first rod body; 4-second rod body; 5-end ring; 6-sealing cover; 7-convex ring portion; 8-threaded groove; 9-sealing ring; 10-accommodating groove; 11-limiting plate; 12-limiting groove; 13-hook portion; 14-L-shaped bracket; 15-strip through hole; 16-triangular rib; 17-screw sleeve. DETAILED DESCRIPTION

[0022] like Figures 1 to 3 As shown, the utility model is a liquid level switch for refrigeration and air conditioning, including: a liquid level rod 1 and a float 2, the float 2 is slidably connected to the liquid level rod 1, a sensing element is encapsulated in the liquid level rod 1, and a magnetic ring is embedded in the float 2. The sensing element and the magnetic ring cooperate to form a sensing mechanism to monitor the liquid level changes. It belongs to the existing technology and will not be described here.

[0023] The liquid level rod 1 includes a first rod body 3 and a second rod body 4. The first rod body 3 is provided with an inner hole for the second rod body 4 to pass through. The cross-sectional diameter of the inner hole is adapted to the outer diameter of the second rod body 4. An end ring 5 is provided on the first rod body 3, and a sealing cover 6 is screwed on the second rod body 4. The sealing cover 6 is provided with a convex ring portion 7, and the end ring 5 is provided with a threaded groove 8. The inner wall of the convex ring portion 7 is provided with a thread, and the inner wall of the threaded groove 8 is provided with a thread, so that the end ring 5 and the convex ring portion 7 are screwed together.

[0024] The length of the liquid level rod 1 is flexibly adjustable, thereby changing the starting height position of the float 2 in the water receiving tray, and can be applied to water receiving trays of different heights, with strong applicability; after the length of the second rod body 4 entering the first rod body 3 is determined, the sealing cover 6 is rotated to screw the convex ring part 7 with the threaded groove 8 of the end ring 5, so that the sealing cover 6 and the end ring 5 are fixed together, and relative movement cannot occur between the first rod body 3 and the second rod body 4, realizing locking and fixation, and the convex ring part 7 is matched with the threaded groove 8 to extend the sealing path, thereby preventing external water from seeping inward from the gap at the connection between the end ring 5 and the sealing cover 6, and having good sealing performance.

[0025] A sealing ring 9 is sleeved on the second rod 4. A receiving groove 10 is formed between the convex ring portion 7 and the sealing cover 6. The receiving groove 10 corresponds to the sealing ring 9. When the sealing cover 6 is docked with the end ring 5, the sealing ring 9 is located in the receiving groove 10. The sealing cover 6 squeezes the sealing ring 9, making it tightly attached to the end face of the end ring 5, thereby blocking the gap at the connection between the end ring 5 and the second rod 4 and preventing external water from seeping in through the gap.

[0026] The second rod 4 is provided with a limiting piece 11, and the float 2 is located between the two limiting pieces 11, which limits the upward and downward sliding range of the float 2 and realizes the control of the water level in the docking water tray. The second rod 4 is provided with a limiting groove 12 corresponding to the limiting piece 11. The limiting piece 11 has an opening, and hooks 13 are provided at both ends of the limiting piece 11 to prevent the limiting piece 11 from freely escaping from the limiting groove 12.

[0027] The limiting piece 11 is detachable and replaceable, which is flexible and convenient, and reduces maintenance costs. During installation, the limiting piece 11 is pried open outward by the hook 13, and then the limiting piece 11 is inserted into the limiting groove 12, and the hook 13 is released. The hook 13 blocks the free movement of the limiting piece 11, so that the limiting piece 11 is fixed on the liquid level rod 1.

[0028] An L-shaped bracket 14 is provided on the first rod 3. A strip-shaped through-hole 15 is provided on the L-shaped bracket 14. A nail is inserted into the strip-shaped through-hole 15 to secure the L-shaped bracket 14 to the air conditioner casing. The liquid level rod 1 then extends into the water tray, making installation convenient. Triangular ribs 16 are provided on the L-shaped bracket 14 to enhance its structural strength and bearing capacity, making it less prone to deformation and extending its service life.

[0029] The L-shaped bracket 14 is screwed to the first rod body 3 through the screw sleeve 17. By rotating the screw sleeve 17 up and down, the height position of the L-shaped bracket 14 on the liquid level rod 1 can be changed, thereby changing the length of the liquid level rod 1 extending into the water receiving tray. The starting height position of the float 2 changes accordingly, which can be applied to water receiving trays of different heights and has strong applicability.

[0030] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications based on the present invention that solve essentially the same technical problems and achieve essentially the same technical effects are included within the scope of protection of the present invention.

Claims

1. A liquid level switch for refrigeration and air conditioning, comprising: A liquid level rod and a float, wherein the float is slidably connected to the liquid level rod, and a limit plate is provided on the liquid level rod, and the float is located between two limit plates; Its characteristics are: The liquid level rod includes a first rod body and a second rod body. The first rod body is provided with an inner hole for the second rod body to pass through. The first rod body is provided with an end ring. The second rod body is screwed with a sealing cover. The sealing cover is provided with a convex ring portion. The end ring is provided with a threaded groove. The convex ring portion is screwed with the threaded groove to limit the relative movement between the first rod body and the second rod body.

2. A liquid level switch for refrigeration and air conditioning according to claim 1, characterized in that: The liquid level rod is provided with a limiting groove corresponding to the limiting piece, the limiting piece is provided with an opening, and hooks are provided at both ends of the limiting piece to limit the limiting piece from freely escaping from the limiting groove.

3. The liquid level switch for refrigeration and air conditioning according to claim 1, characterized in that: A sealing ring is sleeved on the second rod body, and an accommodating groove is formed between the convex ring portion and the sealing cover, and the accommodating groove corresponds to the sealing ring.

4. The liquid level switch for refrigeration and air conditioning according to claim 1, characterized in that: An L-shaped bracket is provided on the liquid level rod, and a strip-shaped through hole is provided on the L-shaped bracket.

5. The liquid level switch for refrigeration and air conditioning according to claim 4, characterized in that: The L-shaped bracket is provided with a triangular rib.

6. The liquid level switch for refrigeration and air conditioning according to claim 4, characterized in that: The L-shaped bracket is screwed onto the liquid level rod via a screw sleeve.

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