A liquid distribution device

Abstract

The utility model provides a kind of liquid distribution device, including upper guide piece, spreading pipe, lower guide piece sequentially arranged from top to bottom, multiple shunt holes are arranged in the axial direction along spreading pipe in upper guide piece, multiple outer flow guide claw, inner flow guide claw are arranged in lower guide piece, and outer flow guide claw, inner flow guide claw are sequentially arranged alternately, and outer flow guide claw and any adjacent inner flow guide claw have shunt gap;In the projection of front and back direction, the vertical symmetry axis of shunt hole is recorded as L2, the vertical symmetry axis of the shunt gap most adjacent below shunt hole is recorded as L1, L1 and L2 are parallel and not collinear, and L2 is located in the side of L1 close to outer flow guide claw;The utility model makes the liquid that shunt hole flows out can be more drained to outer flow guide claw, can effectively improve the condition that the fluid flow is less in the existing technology due to the outer flow guide claw of outer warping form corresponding existence, to balance the flow of each shunt on outer flow guide claw, inner flow guide claw, improve the liquid distribution effect of liquid distribution device.

Description

Technical Field

[0001] This utility model relates to the field of absorption heat pump technology, and in particular to a liquid distribution device. Background Technology

[0002] Currently, the liquid distribution devices in absorption heat pumps can be categorized into the following types:

[0003] 1) Use the nozzle as the liquid distribution device.

[0004] It requires a high driving head to achieve a certain spray angle so that the liquid can evenly cover the heat exchange tubes, but a higher driving head requires additional pump power. However, at low driving heads, the spray angle is not good, and a good coverage effect cannot be achieved.

[0005] 2) Use a perforated plate / pipe / trough as a liquid distribution device.

[0006] It has a relatively simple structure, but it is not very adaptable to fluctuations in the internal circulation flow and has the problem of being easily blocked due to its small opening.

[0007] 3) Use a distributing component as a liquid distribution device.

[0008] It employs a combination of "distribution tube + upper guide + lower guide," which provides good adaptability to liquid pressure head and avoids clogging problems. This structure can be first seen in Akiichi Takada's *Absorption Refrigeration Machine* (1985 edition, translated by Machinery Industry Press, p. 170), with details provided in the appendix. Figure 1-2 The thin-walled distribution tube 1 has an upward-facing opening, and the liquid flows out from the opening into the gap between the upper guide member 2 of the thin sheet metal and the distribution tube 1. Then, under the action of gravity and surface tension, the liquid flows onto the claw structure of the lower guide member 3 of the thin sheet metal, thereby realizing liquid distribution.

[0009] But for the appendix Figure 1-2 After extensive experimentation and application, this liquid distribution device has been found to have the following two significant problems:

[0010] 1. When the flow rate is too high, the outward-curving outer guide claw 31 of the lower guide member 3 will result in a low flow rate of fluid flowing to the outer guide claw 31. This leads to uneven flow distribution between the inner guide claw 32 and the outer guide claw 31 of the lower guide member 3, resulting in poor liquid distribution effect of the liquid distribution device.

[0011] 2. During actual production and installation, the upper guide 2 and the lower guide 3 need to be spot welded to the distribution tube 1 respectively. However, since there are few welding points provided at the contact positions between the upper guide 2, the lower guide 3 and the distribution tube 1, a large welding current is usually required to burn off the welding points of the upper guide 2 and the lower guide 3, which can easily lead to the burning off of the distribution tube 1, or even the burning through and damage of the distribution tube 1. At the same time, due to the limited number of welding points, the upper guide 2 and the lower guide 3 are also prone to being poorly welded. Utility Model Content

[0012] In view of this, the present invention aims to provide a liquid distribution device to solve the problem that the uneven flow distribution between the inner and outer guide claws of the liquid distribution device in the prior art results in poor liquid distribution effect.

[0013] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0014] A liquid distribution device includes an upper guide member, a distribution tube, and a lower guide member arranged sequentially from top to bottom. Along the axial direction of the distribution tube, the upper guide member has a plurality of diversion holes arranged in a linear array, and the lower guide member has a plurality of outer guide claws and inner guide claws arranged in a linear array, with the outer guide claws and inner guide claws arranged alternately in sequence. There is a diversion gap between the outer guide claw and any adjacent inner guide claw. In the projection in the front-back direction, the vertical axis of symmetry of the diversion holes is denoted as L2, and the vertical axis of symmetry of the nearest diversion gap below the diversion holes is denoted as L1. L1 and L2 are parallel but not collinear, and L2 is located on the side of L1 closer to the outer guide claw.

[0015] Furthermore, the lower guide member includes a main board body, and the outer guide claw and the inner guide claw are both connected to the main board body. The connection point between the outer guide claw and the main board body is referred to as the outer claw root, and the connection point between the inner guide claw and the main board body is referred to as the inner claw root. The width D1 of the outer claw root is greater than the width D2 of the inner claw root.

[0016] Furthermore, one end of the inner guide claw is connected to the main board body, and the other end extends vertically downward; one end of the outer guide claw is connected to the main board body, and the other end extends downward at an angle.

[0017] Furthermore, the array spacing between any two adjacent diversion holes, the array spacing between any two adjacent outer guide claws, and the array spacing between any two adjacent inner guide claws are all equal.

[0018] Furthermore, arc-shaped plates are provided on both sides of the upper guide member, the arc-shaped plates are in contact with the outer wall of the distribution tube, the arc-shaped plates are provided with a first weld hole, and the left outer edge and right outer edge of the arc-shaped plates are provided with a second weld hole.

[0019] Furthermore, the upper guide member includes a top plate, side plates are provided on both sides of the top plate, and the arc-shaped plate is formed at the end of the side plate away from the top plate. The diversion hole is provided on the side plate near the top plate, and a guide groove is provided on the lower side of the diversion hole. The guide groove passes through the side plate and the arc-shaped plate downward in sequence.

[0020] Furthermore, the width of the flow guide groove is denoted as D4, where D4 is smaller than the diameter of the flow divider hole.

[0021] Furthermore, the lower guide includes a main board body, the upper side of which contacts the distribution tube, the main board body is provided with a third welding hole, and the left outer edge and right outer edge of the main board body are both provided with a fourth welding hole.

[0022] Furthermore, the main body has an arc-shaped recess that fits against the outer wall of the distribution tube.

[0023] Compared with the prior art, the liquid distribution device of this utility model has the following advantages:

[0024] The liquid distribution device described in this utility model can be used in absorption chilled and hot water units. By staggering the distribution hole and the nearest distribution gap below, a certain distance exists between L1 and L2. The distribution hole is also positioned closer to the outer guide claw, allowing more liquid flowing out of the distribution hole to be guided to the outer guide claw. This effectively improves the situation in the prior art where the fluid flow is insufficient due to the outward-curved outer guide claw, thus balancing the flow rates of the outer and inner guide claws and improving the liquid distribution effect of the liquid distribution device. Attached Figure Description

[0025] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0026] Figure 1 This is an isometric view of a liquid distribution device in the prior art;

[0027] Figure 2 This is a front view of a liquid distribution device in the prior art;

[0028] Figure 3 This is an isometric view of a liquid distribution device according to an embodiment of the present invention;

[0029] Figure 4 This is a front view of a liquid distribution device according to an embodiment of the present invention;

[0030] Figure 5For the embodiments of this utility model in Figure 4 A magnified view of a section at point A in the middle;

[0031] Figure 6 This is a side view of a liquid distribution device according to an embodiment of the present invention;

[0032] Figure 7 This is a schematic diagram of the structure of the upper guide member according to an embodiment of the present utility model;

[0033] Figure 8 This is a front view of the upper guide member described in an embodiment of the present utility model;

[0034] Figure 9 This is a schematic diagram of the structure of the lower guide member described in an embodiment of the present utility model.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Distributor pipe; 11. Opening; 2. Upper guide; 201. Top plate; 202. Side plate; 21. Diverter hole; 22. Guide groove; 23. Arc plate; 24. First weld hole; 25. Second weld hole; 3. Lower guide; 301. Main body; 302. Arc recess; 31. Outer guide claw; 311. Root of outer claw; 32. Inner guide claw; 321. Root of inner claw; 33. First gap; 34. Second gap; 35. Third weld hole; 36. Fourth weld hole; 4. Gap. Detailed Implementation

[0037] The inventive concepts of this disclosure will be described below using terminology commonly used by those skilled in the art to convey the essence of their work to others skilled in the art. However, these inventive concepts may be embodied in many different forms and should not be construed as limited to the embodiments described herein.

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other. For ease of description of the relevant orientations, this application uses the axis of the distribution tube 1 as a reference, with one end designated as "left" and the other end as "right." The corresponding coordinates can be found in the attached diagram. Figure 3 .

[0039] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0040] To address the problem of uneven flow distribution between the inner and outer guide claws in existing liquid distribution devices, resulting in poor liquid distribution performance, this embodiment proposes a liquid distribution device, as shown in the attached figure. Figure 3-9As shown, the liquid distribution device includes an upper guide 2, a distribution tube 1, and a lower guide 3 arranged sequentially from top to bottom. Along the axial direction of the distribution tube 1, the upper guide 2 is provided with a plurality of diversion holes 21 in a linear array. The lower guide 3 is provided with a plurality of outer guide claws 31 and inner guide claws 32 in a linear array, and the outer guide claws 31 and inner guide claws 32 are arranged alternately in sequence. There is a diversion gap between the outer guide claw 31 and any adjacent inner guide claw 32. In the projection in the front-back direction, the vertical axis of symmetry of the diversion hole 21 is denoted as L2, and the vertical axis of symmetry of the nearest diversion gap below the diversion hole 21 is denoted as L1. L1 and L2 are parallel and not collinear, and L2 is located on the side of L1 closer to the outer guide claw 31.

[0041] Regarding existing technologies, as shown in the appendix Figure 2 As shown, in the projection in the front-to-back direction, the vertical axis of symmetry of the diversion hole 21 in the prior art is collinear with the vertical axis of symmetry of the nearest diversion gap below it (denoted as L).

[0042] Compared with the prior art, this application, by staggering the flow divider 21 with its nearest lower flow divider gap, creates a certain distance between L1 and L2, and positions the flow divider 21 closer to the outer guide claw 31. This allows more liquid flowing from the flow divider 21 to be directed to the outer guide claw 31, effectively improving the insufficient fluid flow rate associated with the outwardly curved outer guide claw 31 in the prior art. This balances the flow rates distributed on the outer guide claw 31 and the inner guide claw 32, improving the liquid distribution effect of the liquid distribution device. Accordingly, the liquid distribution device can be used in absorption chiller / hot water units (or absorption heat pumps).

[0043] For ease of understanding and distinction, the flow splitting gap located in the space to the left of the outer guide claw 31 is designated as the first gap 33, and the flow splitting gap located in the space to the right of the outer guide claw 31 is designated as the second gap 34. If the nearest flow splitting gap below the flow splitting hole 21 is the first gap 33, then L2 is located to the right of L1. If the nearest flow splitting gap below the flow splitting hole 21 is the second gap 34, then L2 is located to the left of L1.

[0044] Based on this, the lower guide member 3 includes a main board body 301, the upper side of which is connected to the distribution tube 1; the outer guide claw 31 and the inner guide claw 32 are both connected to the main board body 301. The connection point between the outer guide claw 31 and the main board body 301 is designated as the outer claw root 311, and the connection point between the inner guide claw 32 and the main board body 301 is designated as the inner claw root 321. The width D1 of the outer claw root 311 is greater than the width D2 of the inner claw root 321. Therefore, compared with the prior art, this application further increases the width of the outer claw root 311, allowing it to contact more fluid, which is beneficial to further increase the fluid flow rate to the outer guide claw 31, thereby balancing the flow rates diverted on the outer guide claw 31 and the inner guide claw 32 and improving the liquid distribution effect of the liquid distribution device.

[0045] The array spacing between any two adjacent diversion holes 21, the array spacing between any two adjacent outer guide claws 31, and the array spacing between any two adjacent inner guide claws 32 are all equal, corresponding to the attached... Figure 5 The D3 mark in the middle; thus, while maintaining more flow diversion to the outward guide claw 31, the equally spaced array arrangement between related structures not only facilitates uniform size setting and actual production processing, but also helps ensure uniform liquid distribution. Furthermore, this equally spaced arrangement ensures that each pair of guide claw structures (outer guide claw 31 and adjacent inner guide claw 32) corresponds to a diversion hole 21, guaranteeing fluid flow through each guide claw structure without requiring too many or too dense diversion holes 21. This facilitates the production and processing of the upper guide component 2 and also helps ensure the mechanical strength of the upper guide component 2.

[0046] To ensure the dispersion of fluid flowing through the outer guide claw 31 and inner guide claw 32, one end of the inner guide claw 32 is connected to the main board 301, and the other end extends vertically downward. One end of the outer guide claw 31 is connected to the main board 301, and the other end extends downward at an angle. This helps to ensure the dispersion of fluid flowing through the outer guide claw 31 and inner guide claw 32, and also ensures that the fluid can flow relatively smoothly along the outer guide claw 31, thus taking into account both the fluid dispersion provided by the liquid distribution device and the fluid flow rate at the outer guide claw 31 as much as possible.

[0047] In order to solve the problem that there are too few welding points provided at the contact position between the upper guide 2, the lower guide 3 and the distribution tube 1 in the existing technology.

[0048] The upper guide member 2 has arc-shaped plates 23 on both sides, which contact the outer wall of the distribution tube 1. The arc-shaped plates 23 have first weld holes 24, and second weld holes 25 are provided on both the left and right outer edges. Therefore, when the upper guide member 2 is fitted onto the distribution tube 1, in addition to the contact edge between the arc-shaped plates 23 and the distribution tube 1, welding can be performed. This application further increases the number of operable welding points and the weld length between the upper guide member 2 and the distribution tube 1 by further providing the first weld holes 24 and the second weld holes 25. This effectively improves the reliability of the weld between the two, and in actual welding operations, a smaller current is used to ensure that the weld between the upper guide member 2 and the distribution tube 1 meets the standards, reducing the risk of ablation or even burn-through of the distribution tube 1. The first weld hole 24 is a round hole, and the second weld hole 25 is a semi-circular hole.

[0049] The lower guide 3 includes a main body 301, the upper side of which contacts the distribution tube 1. The main body 301 is provided with a third welding hole 35, and the left and right outer edges of the main body 301 are provided with fourth welding holes 36. Thus, after the distribution tube 1 is placed on the main body 301, in addition to the contact edge between the main body 301 and the distribution tube 1, welding operations can be performed. By further providing the third welding hole 35 and the fourth welding hole 36, this application increases the operable welding points and the weld length between the lower guide 3 and the distribution tube 1 during the welding process, which can effectively improve the reliability of the weld between the two. In actual welding operations, a smaller current welding can be used to ensure that the weld between the lower guide 3 and the distribution tube 1 meets the standards, reducing the risk of ablation or even burn-through of the distribution tube 1. The third welding hole 35 is a round hole, and the fourth welding hole 36 is a semi-circular hole; the main body 301 has an arc-shaped recess 302, which fits against the outer wall of the distribution tube 1 so that the main body 301 fits the outer contour of the distribution tube 1 better when it comes into contact with the distribution tube 1.

[0050] Furthermore, the upper guide member 2 includes a top plate 201, and side plates 202 are provided on both sides of the top plate 201. The end of the side plate 202 away from the top plate 201 forms the arc-shaped plate 23. The diversion hole 21 is provided on the side of the side plate 202 near the top plate 201. A guide groove 22 is provided on the lower side of the diversion hole 21. The guide groove 22 passes through the side plate 202 and the arc-shaped plate 23 in sequence. Thus, when the fluid level in the gap 4 is higher than the diversion hole 21, it can flow directly through the diversion hole 21 and down along the guide groove 22, so that the fluid can flow in a specific direction to the guide claw structure of the lower guide member 3. Preferably, the width of the guide groove 22 is denoted as D4, which is smaller than the diameter of the diversion hole 21. This ensures that the fluid can flow smoothly through the diversion hole 21 and the guide groove 22, while avoiding the guide groove 22 being too wide, which would affect the structural strength of the upper guide member 2 at the side plate 202 and the arc plate 23.

[0051] In addition, an opening 11 is provided at the top of the distribution pipe 1, through which the fluid in the distribution pipe 1 enters the gap 4. The diversion hole 21 is connected to the gap 4. These details can be found in the attached document. Figure 1-2 The prior art shown in this application will not be described in detail here.

[0052] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A liquid distribution device, characterized in that, The liquid distribution device includes an upper guide (2), a distribution tube (1), and a lower guide (3) arranged sequentially from top to bottom. Along the axial direction of the distribution tube (1), the upper guide (2) is arranged with multiple diversion holes (21) in a linear array, and the lower guide (3) is arranged with multiple outer guide claws (31) and inner guide claws (32) in a linear array. The outer guide claws (31) and inner guide claws (32) are arranged alternately in sequence. There is a diversion gap between the outer guide claw (31) and any adjacent inner guide claw (32). In the projection in the front-back direction, the vertical axis of symmetry of the diversion hole (21) is denoted as L2, and the vertical axis of symmetry of the nearest diversion gap below the diversion hole (21) is denoted as L1. L1 and L2 are parallel and not collinear, and L2 is located on the side of L1 closer to the outer guide claw (31).

2. The liquid distribution device according to claim 1, characterized in that, The lower guide member (3) includes a main board body (301). The outer guide claw (31) and the inner guide claw (32) are both connected to the main board body (301). The connection point between the outer guide claw (31) and the main board body (301) is called the outer claw root (311), and the connection point between the inner guide claw (32) and the main board body (301) is called the inner claw root (321). The width D1 of the outer claw root (311) is greater than the width D2 of the inner claw root (321).

3. A liquid distribution device according to claim 2, characterized in that, One end of the inner guide claw (32) is connected to the main board body (301), and the other end extends vertically downward. One end of the outer guide claw (31) is connected to the main board body (301), and the other end extends downward at an angle.

4. A liquid distribution device according to claim 1, characterized in that, The array spacing between any two adjacent diversion holes (21), the array spacing between any two adjacent outer guide claws (31), and the array spacing between any two adjacent inner guide claws (32) are all equal.

5. A liquid distribution device according to claim 1, characterized in that, The upper guide member (2) is provided with arc-shaped plates (23) on both sides. The arc-shaped plates (23) are in contact with the outer wall of the distribution pipe (1). The arc-shaped plates (23) are provided with first weld holes (24). The left outer edge and the right outer edge of the arc-shaped plates (23) are provided with second weld holes (25).

6. A liquid distribution device according to claim 1, characterized in that, The upper guide member (2) includes a top plate (201), and side plates (202) are provided on both sides of the top plate (201). An arc-shaped plate (23) is formed at the end of the side plate (202) away from the top plate (201). The diversion hole (21) is provided on the side of the side plate (202) close to the top plate (201). A guide slot (22) is provided on the lower side of the diversion hole (21). The guide slot (22) passes through the side plate (202) and the arc-shaped plate (23) downward in sequence.

7. A liquid distribution device according to claim 6, characterized in that, The width of the guide slot (22) is denoted as D4, which is smaller than the diameter of the diversion hole (21).

8. A liquid distribution device according to claim 1, characterized in that, The lower guide member (3) includes a main body (301), the upper side of the main body (301) is in contact with the distribution tube (1), the main body (301) is provided with a third welding hole (35), and the left outer edge and the right outer edge of the main body (301) are provided with a fourth welding hole (36).

9. A liquid distribution device according to claim 8, characterized in that, The main body (301) has an arc-shaped recess (302) that fits against the outer wall of the distribution tube (1).

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