Refrigerant distributor

Abstract

The utility model belongs to the technical field of distributors, and discloses a refrigerant distributor, which comprises a distribution cylinder, a refrigerant distributor, a liquid inlet pipe, a liquid outlet pipe and a liquid outlet pipe, the liquid outlet end of the liquid inlet pipe upwards penetrates into the distribution cavity and is used for inputting cooling liquid; the multiple branch pipes are used for outputting cooling liquid, the liquid inlet ends of the multiple branch pipes downwards penetrate into the distribution cavity and are evenly distributed in the circumferential direction of the liquid inlet pipe, and the liquid outlet end of the liquid inlet pipe is higher than the liquid inlet ends of the multiple branch pipes; the flow equalizing plate is arranged in the distribution cavity, the flow equalizing plate is located between the liquid outlet end of the liquid inlet pipe and the liquid inlet end of the branch pipe, and a plurality of flow equalizing holes are formed in the flow equalizing plate and are uniformly distributed around the liquid inlet pipe. The refrigerant distributor provided by the utility model can greatly improve the uniformity of cooling liquid in each branch pipe, so that the heat exchange efficiency of a screw type air-cooled heat pump unit is improved.

Description

Technical Field

[0001] This utility model relates to the field of distributor technology, and in particular to refrigerant distributors. Background Technology

[0002] The refrigerant distributor in a screw-type air-cooled heat pump unit is one of the key components to ensure the efficient operation of the system. Its main function is to evenly distribute the refrigerant discharged from the compressor into the various pipelines of the evaporator or condenser to optimize the heat exchange effect and maintain system stability.

[0003] In a traditional distributor structure, during heating mode, liquid refrigerant enters the cylinder from the main pipe and is directly distributed to each branch pipe. When there is a bend in the main pipe, the liquid refrigerant is prone to flow bias. As a result, the liquid refrigerant will be biased to one side after exiting the main pipe, leading to uneven distribution of liquid refrigerant to each branch pipe and affecting heat exchange efficiency.

[0004] Therefore, there is an urgent need for a refrigerant distributor to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a refrigerant distributor that can significantly improve the uniformity of coolant in each branch pipe, thereby improving the heat exchange efficiency of the screw-type air-cooled heat pump unit.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A refrigerant distributor is provided, comprising:

[0008] A dispensing cylinder, which has a dispensing cavity inside;

[0009] The inlet pipe, with its outlet end pointing upwards, passes into the distribution cavity for inputting coolant;

[0010] Multiple branch pipes, the inlet ends of which all extend downward into the distribution cavity for outputting coolant, and the height of the outlet end of the inlet pipe is higher than the height of the inlet ends of the multiple branch pipes;

[0011] A flow equalization plate is disposed in the distribution cavity. The flow equalization plate is located between the liquid outlet end of the inlet pipe and the liquid inlet end of the branch pipe. The flow equalization plate is provided with a plurality of flow equalization holes, which are evenly distributed around the inlet pipe.

[0012] As a preferred technical solution, the flow equalization plate is provided with a mounting hole and a plurality of flow equalization parts arranged around the mounting hole. The mounting hole is sleeved on the liquid outlet end of the liquid inlet pipe. The flow equalization part is provided with the flow equalization hole, and a clearance part is formed between adjacent flow equalization parts for the branch pipe to pass through.

[0013] As a preferred technical solution, the flow equalization hole is configured as an arc-shaped hole or an oblong hole structure, and the flow equalization hole extends circumferentially along the flow equalization plate.

[0014] As a preferred technical solution, the flow equalization section is provided with at least two flow equalization holes, and the at least two flow equalization holes are distributed radially along the flow equalization plate.

[0015] As a preferred technical solution, on the same flow equalization section, the length of each flow equalization hole increases gradually from the center to the outer periphery.

[0016] As a preferred technical solution, the refrigerant distributor includes four branch pipes, the flow equalization plate is provided with four flow equalization parts and four clearance parts, and the four branch pipes are respectively inserted into the four clearance parts.

[0017] As a preferred technical solution, the distance between the liquid outlet end of the liquid inlet pipe and the top of the distribution cavity is less than a first preset value, so that the coolant input through the liquid inlet pipe can reach the top of the distribution cavity.

[0018] As a preferred technical solution, the inlet end of the branch pipe is provided with a liquid-blocking inclined surface, which is inclined upward along the direction from the center to the outer periphery.

[0019] As a preferred technical solution, the distribution cylinder includes a cylinder body, an upper cover plate, and a lower cover plate. The upper cover plate is installed at the upper port of the cylinder body, and multiple branch pipes pass through and are fixed to the upper cover plate. The lower cover plate is installed at the lower port of the cylinder body, and the liquid inlet pipe passes through and is fixed to the lower cover plate.

[0020] As a preferred technical solution, the dispensing cylinder is made of stainless steel; and / or

[0021] The inlet pipe is made of stainless steel; and / or

[0022] The branch pipe is made of stainless steel; and / or

[0023] The flow equalization plate is made of stainless steel.

[0024] The beneficial effects of this utility model are:

[0025] The refrigerant distributor provided by this utility model includes a distribution cylinder, an inlet pipe, and multiple branch pipes. The height of the outlet end of the inlet pipe is higher than the height of the inlet ends of the branch pipes, so that the two are staggered in the height direction, preventing the coolant entering from the inlet pipe from directly flowing into the branch pipes. Because a flow equalization plate is set between the outlet end of the inlet pipe and the inlet end of the branch pipe, and the flow equalization plate has multiple flow equalization holes, after the coolant enters the distribution chamber through the inlet pipe, it first passes through the flow equalization plate and then flows through the multiple flow equalization holes, making the coolant distribution more uniform in the horizontal direction. This ensures that the flow rate of coolant into each branch pipe is equal, greatly improving uniformity and thus improving the heat exchange efficiency of the screw-type air-cooled heat pump unit. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the refrigerant distributor provided by this utility model;

[0027] Figure 2 This is an exploded view of the refrigerant distributor provided by this utility model;

[0028] Figure 3 This is a schematic diagram of the internal structure of the refrigerant distributor provided by this utility model;

[0029] Figure 4 This is a top view of the internal structure of the refrigerant distributor provided by this utility model;

[0030] Figure 5 This is a schematic diagram of the flow equalization plate provided by this utility model.

[0031] In the picture:

[0032] 10. Distribute the cavity;

[0033] 1. Inlet pipe; 2. Branch pipe; 21. Liquid-retaining inclined surface; 3. Flow equalization plate; 301. Flow equalization hole; 31. Mounting hole; 32. Flow equalization section; 33. Clearance section; 4. Cylinder body; 5. Upper cover plate; 51. First clearance hole; 6. Lower cover plate; 61. Second clearance hole. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0035] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0038] This embodiment provides a refrigerant distributor applied in a screw-type air-cooled heat pump unit for uniformly distributing refrigerant. For example... Figures 1-5 As shown, the refrigerant distributor includes a distribution cylinder, an inlet pipe 1, multiple branch pipes 2, and a flow equalization plate 3. The distribution cylinder is provided with a distribution cavity 10. The outlet end of the inlet pipe 1 extends upward into the distribution cavity 10 for inputting coolant, while the branch pipes 2 are used to output coolant. The inlet ends of the multiple branch pipes 2 all extend downward into the distribution cavity 10.

[0039] Furthermore, such as Figures 1-5 As shown, multiple branch pipes 2 are evenly distributed around the inlet pipe 1. The height of the outlet end of the inlet pipe 1 is higher than the height of the inlet ends of the multiple branch pipes 2. The flow equalization plate 3 is provided in the distribution cavity 10. The flow equalization plate 3 is located between the outlet end of the inlet pipe 1 and the inlet end of the branch pipe 2. The flow equalization plate 3 is provided with multiple flow equalization holes 301, which are evenly distributed around the inlet pipe 1.

[0040] Specifically, in this embodiment, the height of the liquid outlet end of the refrigerant distributor inlet pipe 1 is higher than the height of the liquid inlet ends of the multiple branch pipes 2, so that the two are staggered in the height direction, avoiding the coolant entering from the liquid inlet pipe 1 from directly flowing into the branch pipes 2. Since a flow equalization plate 3 is provided between the liquid outlet end of the liquid inlet pipe 1 and the liquid inlet end of the branch pipe 2, and the flow equalization plate 3 is provided with multiple flow equalization holes 301, after the coolant enters the distribution chamber 10 through the liquid inlet pipe 1, it first passes through the flow equalization plate 3, and the coolant flows through the multiple flow equalization holes 301, making the coolant distribution more uniform in the horizontal direction. This makes the flow rate of coolant flowing into each branch pipe 2 equal, greatly improving the uniformity, thereby improving the heat exchange efficiency of the screw-type air-cooled heat pump unit.

[0041] For example, the distance D between the outlet end of the inlet pipe 1 and the top of the distribution cavity 10 is less than a first preset value, so that the coolant input through the inlet pipe 1 can reach the top of the distribution cavity 10. In this way, after the coolant input through the inlet pipe 1 impacts the top of the distribution cavity 10, it bounces downward and passes through multiple flow equalization holes 301 on the flow equalization plate 3. Since the top of the distribution cavity 10 is a planar structure, its bounce effect can make the coolant spread evenly in the horizontal direction, thereby further improving the flow uniformity of the coolant in each branch pipe 2.

[0042] For example, the first preset value can be determined based on the pressure of the coolant entering through the inlet pipe 1. The higher the pressure value, the higher the reach of the coolant entering through the inlet pipe 1. The first preset value is positively correlated with the pressure value. At the same time, the distance D between the outlet end of the inlet pipe 1 and the top of the distribution chamber 10 should not be too small to avoid obstructing the smooth flow of coolant into the distribution chamber 10. The first preset value can be selected as 3cm, 4cm, 5cm, 6cm, 7cm, 8cm, 9cm, or 10cm.

[0043] For example, such as Figure 4 and Figure 5 As shown, the flow equalization plate 3 is provided with mounting holes 31 and multiple flow equalization sections 32 arranged around the mounting holes 31. The mounting holes 31 are fitted onto the outlet end of the inlet pipe 1. The flow equalization sections 32 are provided with flow equalization holes 301, and a clearance section 33 is formed between adjacent flow equalization sections 32 for the branch pipes 2 to pass through. In this way, the flow equalization holes 301 and the inlet ends of the branch pipes 2 are arranged alternately in the horizontal direction. The coolant flowing through the flow equalization holes 301 does not flow directly into the branch pipes 2, but causes the coolant level in the distribution chamber 10 to gradually rise. After rising to the inlet end of the branch pipes 2, the coolant floods into each branch pipe 2, so that the coolant level is in a balanced and stable state. At this time, the flow rate of coolant flowing into each branch pipe 2 is approximately the same.

[0044] In this embodiment, as Figures 1-5As shown, the refrigerant distributor includes four branch pipes 2, and the flow equalization plate 3 is provided with four flow equalization sections 32 and four clearance sections 33. The four branch pipes 2 are respectively inserted into the four clearance sections 33.

[0045] For example, the flow equalization hole 301 is configured as an arc-shaped hole or an oblong hole structure, and the flow equalization hole 301 extends circumferentially along the flow equalization plate 3. In this embodiment, as... Figures 2-5 As shown, the flow equalization hole 301 is configured as an arc-shaped hole structure.

[0046] For example, the flow equalization section 32 is provided with at least two flow equalization holes 301, which are radially distributed along the flow equalization plate 3 to improve the efficiency of coolant passing through the flow equalization plate 3. In this embodiment, as... Figures 2-5 As shown, each flow equalization section 32 is provided with three flow equalization holes 301.

[0047] For example, such as Figures 2-5 As shown, on the same flow equalization section 32, the length of the flow equalization holes 301 increases gradually from the center to the outer periphery to further improve the uniformity of the coolant passing through the flow equalization plate 3.

[0048] For example, such as Figure 2 and Figure 3 As shown, the inlet end of the branch pipe 2 is provided with a liquid-blocking slope 21. Along the center to the outer periphery, the liquid-blocking slope 21 is inclined upward to prevent the coolant entering the branch pipe 2 from being directly poured into the branch pipe 2 from the slope when the liquid inlet direction of the liquid inlet pipe 1 is uneven, so as to further improve the uniformity of coolant distribution.

[0049] For example, such as Figures 1-4 As shown, the distribution cylinder includes a cylinder body 4, an upper cover plate 5, and a lower cover plate 6. The upper cover plate 5 is installed at the upper port of the cylinder body 4, and multiple branch pipes 2 are inserted through and fixed to the upper cover plate 5. The lower cover plate 6 is installed at the lower port of the cylinder body 4, and the liquid inlet pipe 1 is inserted through and fixed to the lower cover plate 6.

[0050] For example, the cylinder 4 is connected to the upper cover plate 5 by welding, and the cylinder 4 is connected to the lower cover plate 6 by welding.

[0051] For example, such as Figure 2 As shown, the upper cover plate 5 is provided with a plurality of first clearance holes 51, and a plurality of branch pipes 2 are inserted through the plurality of first clearance holes 51 in a corresponding manner and are welded to the peripheral wall of the first clearance hole 51 to seal the gap between the periphery of the branch pipe 2 and the first clearance hole 51, so as to prevent coolant leakage.

[0052] For example, such as Figure 2As shown, the lower cover plate 6 has a second clearance hole 61 in the center. The liquid inlet pipe 1 passes through the second clearance hole 61 and is welded to the peripheral wall of the second clearance hole 61 to seal the gap between the periphery of the liquid inlet pipe 1 and the second clearance hole 61, so as to prevent coolant leakage.

[0053] For example, the material of the dispensing cylinder is stainless steel, that is, the cylinder body 4, the upper cover plate 5 and the lower cover plate 6 are all made of stainless steel, which has good corrosion resistance.

[0054] For example, the inlet pipe 1 is made of stainless steel, which has good corrosion resistance.

[0055] For example, branch pipe 2 is made of stainless steel, which has good corrosion resistance.

[0056] For example, the flow equalization plate 3 is made of stainless steel, which has good corrosion resistance.

[0057] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A refrigerant distributor, characterized in that, include: A dispensing cylinder, which has a dispensing cavity (10) inside; The inlet pipe (1) has its outlet end extending upwards into the distribution cavity (10) for inputting coolant; Multiple branch pipes (2) are used to output coolant. The inlet ends of the multiple branch pipes (2) are all inserted downward into the distribution cavity (10) and are evenly distributed around the circumference of the inlet pipe (1). The height of the outlet end of the inlet pipe (1) is higher than the height of the inlet ends of the multiple branch pipes (2). A flow equalization plate (3) is provided in the distribution cavity (10). The flow equalization plate (3) is located between the liquid outlet end of the liquid inlet pipe (1) and the liquid inlet end of the branch pipe (2). The flow equalization plate (3) is provided with a plurality of flow equalization holes (301), which are evenly distributed around the liquid inlet pipe (1).

2. The refrigerant distributor according to claim 1, characterized in that, The flow equalization plate (3) is provided with a mounting hole (31) and a plurality of flow equalization parts (32) arranged around the mounting hole (31). The mounting hole (31) is sleeved on the liquid outlet end of the liquid inlet pipe (1). The flow equalization part (32) is provided with the flow equalization hole (301). An avoidance part (33) is formed between adjacent flow equalization parts (32) for the branch pipe (2) to pass through.

3. The refrigerant distributor according to claim 2, characterized in that, The flow equalization hole (301) is configured as an arc-shaped hole or a waist-shaped hole structure, and the flow equalization hole (301) extends circumferentially along the flow equalization plate (3).

4. The refrigerant distributor according to claim 3, characterized in that, The flow equalization section (32) is provided with at least two flow equalization holes (301), and the at least two flow equalization holes (301) are distributed radially along the flow equalization plate (3).

5. The refrigerant distributor according to claim 4, characterized in that, On the same flow equalization section (32), the length of each flow equalization hole (301) increases gradually from the center to the outer periphery.

6. The refrigerant distributor according to claim 2, characterized in that, The refrigerant distributor includes four branch pipes (2), and the flow equalization plate (3) is provided with four flow equalization sections (32) and four clearance sections (33). The four branch pipes (2) are respectively inserted into the four clearance sections (33).

7. The refrigerant distributor according to any one of claims 1-6, characterized in that, The distance D between the outlet end of the inlet pipe (1) and the top of the distribution cavity (10) is less than a first preset value, so that the coolant input by the inlet pipe (1) can reach the top of the distribution cavity (10).

8. The refrigerant distributor according to any one of claims 1-6, characterized in that, The inlet end of the branch pipe (2) is provided with a liquid-blocking inclined surface (21), which is inclined upward along the direction from the center to the outer periphery.

9. The refrigerant distributor according to any one of claims 1-6, characterized in that, The distribution cylinder includes a cylinder body (4), an upper cover plate (5) and a lower cover plate (6). The upper cover plate (5) is installed at the upper port of the cylinder body (4), and a plurality of branch pipes (2) are inserted through and fixed to the upper cover plate (5). The lower cover plate (6) is installed at the lower port of the cylinder body (4), and the liquid inlet pipe (1) is inserted through and fixed to the lower cover plate (6).

10. The refrigerant distributor according to any one of claims 1-6, characterized in that, The distribution cylinder is made of stainless steel; and / or The material of the inlet pipe (1) is stainless steel; and / or The branch pipe (2) is made of stainless steel; and / or The flow equalization plate (3) is made of stainless steel.

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