Air indirect evaporation refrigeration core

Abstract

The air indirect evaporation refrigeration core comprises a plurality of heat exchange plates and a plurality of blocking pieces, the heat exchange plates are arranged at intervals in the first direction, and the blocking pieces are arranged on the surface of the heat exchange plate on one side in a heat exchange channel at equal intervals and divide the surface of the heat exchange plate into a plurality of heat exchange cavities. A plurality of water storage grooves are formed in the heat exchange chamber at equal intervals; the heat exchange channels are converted into dry channels through the equally-spaced blocking pieces in the second direction, the heat exchange channels are converted into wet channels through the equally-spaced blocking pieces in the third direction, the third direction is perpendicular to the first direction and the second direction, and the dry channels and the wet channels are arranged in a staggered mode; the heat exchange plate is formed at a time through plastic uptake, the functions of efficiency, strength and the like are achieved through the concave-convex structure design, the dry channels, the wet channels, the blocking pieces, the protrusions and the water storage grooves, performance optimization is achieved, and the sealing performance and the overall strength of the core body are improved through the edge sealing technology, the silica gel sealing technology and the like.

Description

Technical Field

[0001] The utility model relates to the field of HVAC evaporative refrigeration, in particular to an air indirect evaporative refrigeration core. Background Art

[0002] At present, the indirect evaporation core materials on the market are divided into metal core and non-metal core. Non-metallic core is usually made of PVC. The common problems are:

[0003] 1. The wet channel has a short heat exchange time and a short contact time between air and water, which results in poor evaporative cooling effect in the wet channel and reduces the evaporation efficiency of the indirect evaporation core;

[0004] 2. The sealing problem of the indirect evaporation core is difficult to solve. The dry and wet channels are stacked with horizontal and vertical PVC frames. Due to the limitation of the mold size, a single frame needs to be spliced ​​with two horizontal or vertical frames. There is a gap at the joint, and there is a gap between the horizontal and vertical directions. A large amount of sealant is required for sealing. Over time, the sealant is prone to cracking and falling off, causing wind to cross the dry and wet channels and reducing the evaporation efficiency of the indirect evaporation core.

[0005] 3. The indirect evaporation core is stacked with PVC skeletons, which are weak in strength and require high assembly process. The skeleton is molded into a V-shaped array. During assembly, the strength is insufficient and the skeleton is squeezed, resulting in a smaller air duct, uneven wind, increased air flow resistance, and affected core efficiency. The skeleton is installed too loosely, which is easy to loosen, dislocate, and deform, affecting the appearance and the direction of air and water flow, and increasing the unqualified rate of finished products. Utility Model Content

[0006] 1. Technical issues to be resolved

[0007] In order to solve the above problems in the prior art, the utility model provides an air indirect evaporation refrigeration core, which improves the evaporation efficiency of the indirect evaporation core, reduces the air flow resistance, and improves the assembly and sealing process.

[0008] (II) Technical solution

[0009] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0010] An air indirect evaporative refrigeration core comprises a heat exchange plate and a barrier, wherein a plurality of heat exchange plates are provided and the plurality of heat exchange plates are spaced apart along a first direction, and a heat exchange channel is formed between adjacent heat exchange plates, wherein a plurality of barrier members are provided and are equally spaced apart on the surface of the heat exchange plate on one side of the heat exchange channel, and the surface of the heat exchange plate is divided into a plurality of heat exchange chambers, wherein a plurality of water storage grooves are equally spaced apart in the heat exchange chambers; barrier members equally spaced apart along a second direction convert the heat exchange channel into a dry channel, and the second direction is perpendicular to the first direction, and barrier members equally spaced apart along a third direction convert the heat exchange channel into a wet channel, and the third direction is respectively perpendicular to the first direction and the second direction, and the dry channel and the wet channel are alternately arranged.

[0011] Preferably, sealing edges are provided on upper and lower sides of the two heat exchange plates in the dry channel.

[0012] Preferably, the two heat exchange plates in the wet channel are provided with sealed edges on the left and right sides.

[0013] Preferably, the water storage groove is an elongated groove.

[0014] Preferably, there are two types of the barrier members, namely, first ribs and second ribs, the first ribs and the second ribs are alternately arranged on the surface of the heat exchange plate, and the first ribs and the second ribs are both S-shaped structures, and a plurality of arc-shaped notches are evenly spaced on the first ribs.

[0015] Preferably, a plurality of protrusions are evenly spaced on the first rib and the second rib, and grooves corresponding to the protrusions are provided inside the heat exchange plate. When adjacent heat exchange plates are combined, the protrusion of one heat exchange plate can be correspondingly installed in the groove of another heat exchange plate.

[0016] Preferably, the heat exchange plate is formed by one-time vacuum forming of PP material.

[0017] Preferably, the heat exchange plate surface is provided with splicing frames at four corners.

[0018] Preferably, it further comprises a sheet metal outer frame, and the plurality of heat exchange plates are fixedly mounted in the sheet metal outer frame.

[0019] (III) Beneficial effects

[0020] The beneficial effects of the utility model are:

[0021] 1. In the wet channel, the airflow and the water flow flow in the opposite direction to perform a heat exchange. In the dry channel, the airflow and the wet channel airflow perform a secondary heat exchange to achieve a secondary heat exchange. When water flows through the wet channel, the water storage groove can store part of the water, thereby increasing the contact time between water and air in the wet channel and improving the evaporation efficiency.

[0022] 2. The edge sealing process is used between the heat exchange plates to fuse the edges of the two heat exchange plates into one. The welding width is about 10mm. The welding is firm and the sealing is good, avoiding the problems caused by the use of colloid sealing, and the core performance is stable;

[0023] 3. Compared with the straight-line type, the first and second ribs of the S-shaped structure have a longer path, a larger force-bearing area, and a stronger strength. The heat exchange plate itself has a certain strength, which ensures that the wind channel is not deformed by force, the wind channel is unobstructed, the wind resistance is small, and the air flow outlet is formed; the setting of the arc-shaped notch can make the air flow flow to the adjacent channel, the air flow is more uniform, and the core efficiency is stable;

[0024] 4. The bulges on the ribs can serve as the force-bearing surface and dimension positioning surface when the heat exchange plates are stacked, ensuring the stacking dimensions are flat. At the same time, the force is transmitted through the bulges to increase the strength of the entire core.

[0025] 5. The heat exchange plate is formed by one-step vacuum forming. Through the concave-convex structure design, dry and wet channels, barriers, protrusions and water storage grooves are formed to achieve efficiency, strength and other functions and performance optimization. The edge sealing process and silicone sealing process are adopted to improve the core sealing and overall strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of an air indirect evaporation refrigeration core;

[0027] Figure 2 It is a schematic diagram of the installation details of adjacent heat exchange plates;

[0028] Figure 3 It is a schematic diagram of the detailed structure of the heat exchange plate in the dry channel;

[0029] Figure 4 Schematic diagram of the detailed structure of the heat exchange plate in the wet channel.

[0030] Description of reference numerals:

[0031] 1. Heat exchange plate;

[0032] 2. Water storage groove;

[0033] 3. barrier; 31. first rib; 32. second rib;

[0034] 4. Arc notch;

[0035] 5. Bump;

[0036] 6. Edge sealing;

[0037] 7. Splice the skeleton;

[0038] 8. Sheet metal frame;

[0039] A. First direction;

[0040] B. Second direction;

[0041] C. The third direction. DETAILED DESCRIPTION

[0042] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0043] Please refer to Figures 1 to 3 The utility model provides an air indirect evaporative refrigeration core, comprising a heat exchange plate 1 and a barrier 3, characterized in that a plurality of heat exchange plates 1 are provided, and the plurality of heat exchange plates 1 are arranged at intervals along a first direction A, and a heat exchange channel is formed between adjacent heat exchange plates 1, a plurality of barrier members 3 are provided, and are arranged at equal intervals on the surface of the heat exchange plate 1 on one side of the heat exchange channel, and the surface of the heat exchange plate 1 is divided into a plurality of heat exchange chambers, and a plurality of water storage grooves 2 are arranged at equal intervals in the heat exchange chamber; barrier members 3 at equal intervals along a second direction B transform the heat exchange channel into a dry channel, and the second direction B is perpendicular to the first direction A, barrier members 3 at equal intervals along a third direction C transform the heat exchange channel into a wet channel, and the third direction C is respectively perpendicular to the first direction A and the second direction B, and the dry channel and the wet channel are arranged alternately;

[0044] When in use, in the wet channel, the air flow and the water flow flow in the opposite direction to perform a heat exchange. In the dry channel, the air flow and the wet channel air flow perform a secondary heat exchange to achieve secondary heat exchange. When water flows through the wet channel, the water storage groove 2 can store part of the water, thereby increasing the contact time between water and air in the wet channel and improving the evaporation efficiency.

[0045] In this embodiment, the two heat exchange plates 1 in the dry channel are provided with edge seals 6 on the upper and lower sides, and the two heat exchange plates 1 in the wet channel are provided with edge seals 6 on the left and right sides; the edge seal 6 process is adopted between the heat exchange plates 1, so that the edges of the two heat exchange plates 1 are melted into one, the welding width is about 10mm, the welding is firm, the sealing is good, the problems caused by the use of colloid sealing are avoided, and the core performance is stable.

[0046] In this embodiment, the water storage groove 2 is a long strip-shaped groove, which can increase the contact area between the stored water and the airflow.

[0047] In this embodiment, there are two types of the barrier member 3, namely, a first rib 31 and a second rib 32. The first rib 31 and the second rib 32 are alternately arranged on the surface of the heat exchange plate 1, and the first rib 31 and the second rib 32 are both S-shaped structures. A plurality of arc-shaped notches 4 are evenly spaced on the first rib 31. Firstly, compared with the straight-line type, the first rib 31 and the second rib 32 with the S-shaped structure have a longer distance, a larger force-bearing area, and a stronger strength. In addition, the heat exchange plate 1 itself has a certain strength, which ensures that the wind channel is not deformed under force, the wind channel is unobstructed, the wind resistance is small, and the airflow outlet is formed. The arrangement of the arc-shaped notches 4 can make the airflow flow to the adjacent channels, and the airflow is more uniform, thereby ensuring the stability of the core efficiency.

[0048] In this embodiment, a plurality of protrusions 5 are evenly spaced on the first rib 31 and the second rib 32, and grooves corresponding to the protrusions 5 are provided inside the heat exchange plate 1. When the adjacent heat exchange plates 1 are combined, the protrusions 5 of one heat exchange plate 1 can be correspondingly installed in the grooves of another heat exchange plate 1; the protrusions 5 on the ribs can serve as force-bearing surfaces and dimension positioning surfaces when the heat exchange plates 1 are stacked, so as to ensure the flatness of the stacking dimensions, and at the same time, the force is transmitted through the protrusions 5 to increase the strength of the entire core.

[0049] In this embodiment, the heat exchange plate 1 is formed by one-time vacuum forming of PP material. Since the heat exchange plate 1 is formed in one time, there is no splicing gap in the PP heat exchange plate 1, which eliminates the phenomenon of wind cross-flow and ensures the core performance.

[0050] In this embodiment, the heat exchange plates 1 are provided with splicing frames 7 at the four corners along the periphery, and the splicing frames 7 facilitate the positioning of the heat exchange plates 1 when they are stacked.

[0051] In this embodiment, a sheet metal outer frame 8 is further included, and the plurality of heat exchange plates 1 are fixedly installed in the sheet metal outer frame 8 .

[0052] The working principle of the utility model is as follows:

[0053] In the wet channel, the airflow and the water flow flow in the opposite direction to perform a heat exchange. In the dry channel, the airflow and the airflow in the wet channel perform a secondary heat exchange to achieve a secondary heat exchange. When the water flows through the wet channel, the water storage groove 2 can store a part of the water, thereby increasing the contact time between the water and the air in the wet channel and improving the evaporation efficiency.

[0054] The heat exchanger plate 1 adopts the edge sealing 6 process to fuse the edges of the two heat exchanger plates 1 into one, with a welding width of about 10mm. The welding is firm and has good sealing, avoiding the problems caused by using colloid sealing, and the core performance is stable;

[0055] Compared with the straight-line structure, the first rib 31 and the second rib 32 of the S-shaped structure have a longer path, a larger force-bearing area, and a stronger strength. The heat exchange plate 1 itself has a certain strength, which ensures that the wind channel is not deformed by force, the wind channel is unobstructed, the wind resistance is small, and the air flow outlet is formed; the setting of the arc-shaped notch 4 can make the air flow flow to the adjacent channel, the air flow is more uniform, and the core efficiency is ensured to be stable;

[0056] The protrusions 5 on the ribs can serve as a force-bearing surface and a dimension positioning surface when the heat exchange plates 1 are stacked, ensuring that the stacking dimensions are flat. At the same time, the force is transmitted through the protrusions 5 to increase the strength of the entire core.

[0057] The heat exchange plate 1 is formed by one-step vacuum forming, and through the concave-convex structure design, dry and wet channels, barriers 3, protrusions 5 and water storage grooves 2 are formed to achieve efficiency, strength and other functions and performance optimization. The edge sealing 6 process and silicone sealing process are adopted to achieve the improvement of the core sealing and overall strength.

[0058] The circuits, electronic components and modules involved are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by this utility model does not involve improvements to software and methods.

[0059] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

[0060] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An air indirect evaporative refrigeration core, comprising a heat exchange plate and a barrier, characterized in that: There are multiple heat exchange plates, and the multiple heat exchange plates are spaced along a first direction, and a heat exchange channel is formed between adjacent heat exchange plates. There are multiple blocking members, which are evenly spaced on the surface of the heat exchange plate on one side of the heat exchange channel, and divide the surface of the heat exchange plate into multiple heat exchange chambers, and a number of water storage grooves are evenly spaced in the heat exchange chambers; the blocking members evenly spaced along the second direction transform the heat exchange channel into a dry channel, and the second direction is perpendicular to the first direction; the blocking members evenly spaced along the third direction transform the heat exchange channel into a wet channel, and the third direction is respectively perpendicular to the first direction and the second direction, and the dry channel and the wet channel are staggered.

2. The air indirect evaporative refrigeration core according to claim 1, characterized in that: Sealing edges are arranged on upper and lower sides of the two heat exchange plates in the dry channel.

3. The air indirect evaporative refrigeration core according to claim 1, characterized in that: The two heat exchange plates in the wet channel are provided with sealing edges on the left and right sides.

4. The air indirect evaporative refrigeration core according to claim 1, characterized in that: The water storage groove is a long strip-shaped groove.

5. The air indirect evaporative refrigeration core according to claim 1, characterized in that: There are two types of the barrier members, namely, first ribs and second ribs, which are alternately arranged on the surface of the heat exchange plate, and both of which are S-shaped structures, and a plurality of arc-shaped notches are evenly spaced on the first ribs.

6. The air indirect evaporative refrigeration core according to claim 5, characterized in that: A plurality of protrusions are evenly spaced on the first rib and the second rib, and grooves corresponding to the protrusions are arranged inside the heat exchange plate. When adjacent heat exchange plates are combined, the protrusion of one heat exchange plate can be correspondingly installed in the groove of another heat exchange plate.

7. The air indirect evaporative refrigeration core according to claim 1, characterized in that: The heat exchange plate is formed by one-time vacuum forming of PP material.

8. The air indirect evaporative refrigeration core according to claim 1, characterized in that: The heat exchange plate surface is provided with splicing frames at four corners around it.

9. The air indirect evaporative refrigeration core according to claim 1, characterized in that: It also includes a sheet metal outer frame, and the plurality of heat exchange plates are fixedly installed in the sheet metal outer frame.

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