A grading liquid distribution device of a lithium bromide absorption air conditioning unit

Abstract

The utility model discloses a kind of hierarchical liquid distribution devices of lithium bromide absorption type air conditioning unit, including the liquid inlet pipe of horizontal arrangement, the top surface of liquid inlet pipe is provided with liquid inlet hole, liquid inlet pipe both sides side wall is provided with liquid outlet hole, the lower side of liquid inlet pipe is spaced apart and is provided with liquid distribution groove, the bottom surface of liquid distribution groove is provided with liquid distribution hole, the inside of liquid distribution groove and its bottom surface are spaced apart and are provided with filter screen.The liquid inlet pipe provided by the utility model can make the impurities in lithium bromide solution preliminary deposit, after the solution deposited flows out through liquid outlet hole, again, fine filtration is carried out through filter screen.This sedimentation and filtration hierarchical purification mechanism can efficiently intercept impurities of different particle sizes, significantly reduce the risk of liquid distribution hole blockage.Finally, clean lithium bromide solution can stably and smoothly pass through liquid distribution hole, form uniform liquid column, carry out drip irrigation liquid distribution to heat exchange pipe, thereby form uniform liquid film, realize efficient, stable heat exchange process.

Description

Technical Field

[0001] This utility model relates to a graded liquid distribution device for a lithium bromide absorption air conditioning unit. Background Technology

[0002] Lithium bromide absorption chillers use an aqueous lithium bromide solution as the working fluid and operate in a vacuum environment. Water is used as the refrigerant, and the lithium bromide solution acts as the absorbent. This process produces chilled water at temperatures above 0°C and is widely used in central air conditioning systems. The unit primarily utilizes the characteristic that water's boiling point decreases under high vacuum conditions to achieve the refrigeration process.

[0003] To achieve efficient heat exchange within the unit, commonly used liquid distribution methods include spray distribution and plate spray distribution. However, lithium bromide solution is highly corrosive, especially upon contact with oxygen, which rapidly corrodes the internal metal components. Although the unit is designed to maintain a high vacuum, air can enter the system during maintenance, parts replacement, or leaks in the heat exchange tubes, causing corrosion problems. Solid impurities generated by corrosion in the lithium bromide solution easily clog the nozzles or drip holes of the liquid distribution structure, severely affecting the distribution of the lithium bromide solution on the heat exchange surface and ultimately leading to a decline in unit performance. Utility Model Content

[0004] The main objective of this invention is to provide a graded liquid distribution device for lithium bromide absorption air conditioning units to solve the problems mentioned in the background art.

[0005] The objective of this utility model can be achieved by adopting the following technical solution: A graded liquid distribution device for a lithium bromide absorption air conditioning unit includes a horizontally arranged liquid inlet pipe, a liquid inlet hole on the top surface of the liquid inlet pipe, liquid outlet holes on both side walls of the liquid inlet pipe, a liquid distribution trough spaced apart below the liquid inlet pipe, a liquid distribution hole on the bottom surface of the liquid distribution trough, and a filter screen spaced apart inside the liquid distribution trough and its bottom surface.

[0006] Preferably, overflow plates are provided at both ends of the liquid inlet pipe, and an overflow port is provided between the top of the overflow plate and the pipe wall of the liquid inlet pipe.

[0007] Preferably, baffles are provided at intervals on both sides of the liquid inlet pipe.

[0008] Preferably, a flow stabilizing head is provided on the bottom surface of the liquid distribution tank below the liquid distribution hole, and a flow stabilizing hole is provided inside the flow stabilizing head.

[0009] Preferably, the flow stabilizing head has a frustum-shaped structure that is larger at the top and smaller at the bottom, and the flow stabilizing hole has a cylindrical structure.

[0010] Preferably, a support plate is provided on the inner bottom surface of the liquid distribution tank, and the bottom of the filter screen abuts against the support plate.

[0011] Preferably, the sidewall of the filter screen is fixedly connected to the sidewall of the liquid distribution tank by fixing nails.

[0012] The beneficial technical effects of this utility model are as follows: The inlet pipe provided by this invention allows for the initial deposition of impurities in the lithium bromide solution. After deposition, the solution flows out through the outlet hole and is then finely filtered through a filter screen. This staged purification mechanism of precipitation and filtration can efficiently intercept impurities of different particle sizes, significantly reducing the risk of clogging of the distribution holes. Ultimately, the clean lithium bromide solution can stably and smoothly pass through the distribution holes, forming a uniform liquid column that drips onto the heat exchange tube, thereby forming a uniform liquid film and achieving an efficient and stable heat exchange process. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the graded liquid distribution device according to an embodiment of the present invention; Figure 2 This is a top view of the graded liquid distribution device according to an embodiment of the present invention; Figure 3 This is an exploded structural diagram of the graded liquid distribution device according to an embodiment of the present invention. Figure 4 This is a side sectional view of the graded liquid distribution device according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the liquid distribution tank structure according to an embodiment of the present invention.

[0014] In the diagram: 1. Inlet pipe; 2. Inlet hole; 3. Outlet hole; 4. Distribution trough; 5. Distribution hole; 6. Filter screen; 7. Overflow plate; 8. Overflow port; 9. Baffle plate; 10. Flow stabilizer; 11. Flow stabilizer hole; 12. Support plate; 13. Fixing nail. Detailed Implementation

[0015] To enable those skilled in the art to understand the technical solution of this utility model more clearly, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of this utility model is not limited thereto.

[0016] like Figures 1-5 As shown, the graded liquid distribution device for the lithium bromide absorption air conditioning unit provided in this embodiment includes a horizontally arranged liquid inlet pipe 1, a liquid inlet hole 2 on the top surface of the liquid inlet pipe 1, liquid outlet holes 3 on both side walls of the liquid inlet pipe 1, a liquid distribution trough 4 spaced apart below the liquid inlet pipe 1, a liquid distribution hole 5 on the bottom surface of the liquid distribution trough 4, and a filter screen 6 spaced apart inside the liquid distribution trough 4 and its bottom surface.

[0017] During the solution distribution process, the lithium bromide solution enters the inlet pipe 1 through inlet hole 2. The solution first accumulates inside the pipe, and only flows out after the liquid level rises to the height of outlet hole 3. This accumulation process allows some heavier impurities to pre-deposit at the bottom of the pipe, achieving preliminary sedimentation. Subsequently, the solution flows through filter screen 6, where residual suspended impurities are effectively intercepted, thus avoiding the risk of clogging of distribution holes 5. Finally, the purified solution smoothly passes through distribution holes 5, completing uniform distribution.

[0018] The filter screen 6 is made of stainless steel soft-tissue wire mesh and has filter holes of 1-1.5mm in size, which helps to distribute the solution evenly.

[0019] In this embodiment, as Figure 1 As shown, overflow plates 7 are provided at both ends of the liquid inlet pipe 1, and an overflow port 8 is provided between the top of the overflow plate 7 and the pipe wall of the liquid inlet pipe 1. When the liquid flow rate entering the liquid inlet pipe 1 suddenly becomes too large, the liquid can be discharged through the overflow port 8 to prevent the internal pressure of the liquid inlet pipe 1 from becoming too high, which would cause the liquid flow rate at the liquid outlet 3 to become out of control and splash.

[0020] In this embodiment, as Figure 1 As shown, baffles 9 are spaced apart on both sides of the inlet pipe 1. When liquid flows out from the outlet hole 3 on the side wall of the inlet pipe 1, the baffles 9 can effectively receive and guide the liquid, allowing it to flow smoothly into the distribution tank 4 and preventing droplets from falling into unexpected areas. After determining the position of the baffles 9, they can be welded to the unit.

[0021] In this embodiment, as Figure 4 As shown, a flow stabilizer 10 is provided on the bottom surface of the liquid distribution tank 4 below the liquid distribution hole 5. The flow stabilizer 10 has a flow stabilizer hole 11 inside. The flow stabilizer 10 has a frustum-shaped structure with a larger top and a smaller bottom, and the flow stabilizer hole 11 has a cylindrical structure. It can guide the liquid to flow down in a straight line along the flow stabilizer hole 11, and prevent the liquid from flowing down the bottom wall of the liquid distribution tank 4 when it flows out of the liquid distribution hole 5, thus affecting the liquid distribution.

[0022] In this embodiment, as Figure 3 As shown, a support plate 12 is provided on the bottom surface of the liquid distribution tank 4. The bottom of the filter screen 6 abuts against the support plate 12. The filter screen 6 and the impurities it intercepts have a certain weight. The support plate 12 can support the bottom of the filter screen 6, preventing it from sinking and deforming due to long-term load, which would affect the filtration effect or even damage it.

[0023] In this embodiment, as Figure 4 As shown, the side wall of the filter screen 6 is fixedly connected to the side wall of the liquid distribution tank 4 by fixing nails 13, which stabilizes the position of the filter screen 6 and facilitates disassembly.

[0024] In summary, in this embodiment, the inlet pipe 1 allows for the initial deposition of impurities in the lithium bromide solution. After deposition, the solution flows out through the outlet hole 3 and then undergoes fine filtration through the filter screen 6. This staged purification mechanism of precipitation and filtration can efficiently intercept impurities of different particle sizes, significantly reducing the risk of clogging of the distribution holes 5. Ultimately, the clean lithium bromide solution can stably and smoothly pass through the distribution holes 5, forming a uniform liquid column, which drips onto the heat exchange tube to form a uniform liquid film, achieving an efficient and stable heat exchange process.

[0025] The above description is only a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed by the present utility model, based on the technical solution and concept of the present utility model, shall fall within the protection scope of the present utility model.

Claims

1. A graded liquid distribution device for a lithium bromide absorption air conditioning unit, characterized in that: It includes a horizontally arranged inlet pipe (1), an inlet hole (2) on the top surface of the inlet pipe (1), an outlet hole (3) on both sides of the inlet pipe (1), a distribution trough (4) at intervals below the inlet pipe (1), a distribution hole (5) on the bottom surface of the distribution trough (4), and a filter screen (6) at intervals between the inside of the distribution trough (4) and its bottom surface.

2. The graded liquid distribution device for a lithium bromide absorption air conditioning unit according to claim 1, characterized in that: Overflow plates (7) are provided at both ends of the liquid inlet pipe (1), and an overflow port (8) is provided between the top of the overflow plate (7) and the pipe wall of the liquid inlet pipe (1).

3. The graded liquid distribution device for a lithium bromide absorption air conditioning unit according to claim 1, characterized in that: The liquid inlet pipe (1) is provided with baffles (9) at intervals on both sides.

4. The graded liquid distribution device for a lithium bromide absorption air conditioning unit according to claim 1, characterized in that: The bottom surface of the liquid distribution tank (4) is provided with a flow stabilizing head (10) below the liquid distribution hole (5), and the flow stabilizing head (10) is provided with a flow stabilizing hole (11).

5. The graded liquid distribution device for a lithium bromide absorption air conditioning unit according to claim 4, characterized in that: The flow stabilizer (10) has a frustum-shaped structure with a larger top and a smaller bottom, and the flow stabilizer hole (11) has a cylindrical structure.

6. The graded liquid distribution device for a lithium bromide absorption air conditioning unit according to claim 1, characterized in that: The bottom surface of the liquid distribution tank (4) is provided with a support plate (12), and the bottom of the filter screen (6) abuts against the support plate (12).

7. The graded liquid distribution device for a lithium bromide absorption air conditioning unit according to claim 1, characterized in that: The sidewall of the filter screen (6) is fixedly connected to the sidewall of the liquid distribution tank (4) by fixing nails (13).

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