Micro-channel heat exchanger fixing structure of horizontal energy storage liquid cooling air conditioner

Abstract

The utility model relates to the technical field of energy storage liquid cooling air conditioners, and discloses a micro-channel heat exchanger fixing structure of a horizontal energy storage liquid cooling air conditioner, which comprises a case with an upper opening, a U-shaped support and a micro-channel heat exchanger arranged on the U-shaped support, the right-angle-U-shaped support comprises a bottom plate and two supporting arms vertically arranged at the two ends of the bottom plate, studs extending vertically are welded to the inner bottom wall of the case, at least two first mounting holes are formed in the bottom plate, and the studs penetrate through the first mounting holes of the bottom plate and then lock the right-angle-U-shaped support through nuts. The fixing structure is simple and compact in design, under the condition that the internal space of the horizontal energy storage liquid cooling air conditioner case is narrow, workers can still conveniently conduct installation operation, the limited internal space is reasonably utilized, the compact design requirement of equipment is met, meanwhile, the installation reliability of the micro-channel heat exchanger is guaranteed, and normal and stable operation of the equipment is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of energy storage liquid cooling air conditioning technology, and in particular to a microchannel heat exchanger fixing structure for a horizontal energy storage liquid cooling air conditioner. Background Technology

[0002] With the rapid development of energy storage technology, horizontal liquid-cooled air conditioners for energy storage are playing an increasingly crucial role in various energy storage systems, and are of great significance for ensuring the stable operation and efficient heat dissipation of energy storage equipment. Within the internal structure of a horizontal liquid-cooled air conditioner for energy storage, the microchannel heat exchanger, as the core heat exchange component, plays a vital role in heat transfer and exchange.

[0003] Traditional horizontal liquid-cooled air conditioning systems with energy storage suffer from several problems in their methods of fixing microchannel heat exchangers. For example, early designs often used simple welding or riveting processes to directly connect the microchannel heat exchanger to the internal frame of the chassis. While welding provides a certain level of connection strength, it is irreversible. If the microchannel heat exchanger malfunctions and requires repair or replacement, the disassembly process is extremely cumbersome and can easily cause structural damage to the chassis frame and the microchannel heat exchanger itself, significantly increasing maintenance costs and equipment downtime. Riveting, on the other hand, suffers from stress concentration at the connection points. After long-term operation, under vibration and thermal expansion and contraction, the riveted points are prone to loosening, leading to displacement of the microchannel heat exchanger. This affects heat exchange uniformity, reduces overall heat exchange efficiency, and the friction caused by loosening generates additional noise, interfering with normal equipment operation.

[0004] Some designs also attempted to use a combination of slots and blocks to fix the microchannel heat exchanger. Slots were pre-fabricated at specific locations on the chassis, and blocks were placed along the corresponding edges of the microchannel heat exchanger to embed into the slots. However, in practical applications, it was found that the slots and blocks require extremely high machining precision; even slight deviations can lead to installation difficulties or a loose fit.

[0005] In addition, due to the need for a compact design of horizontal energy storage liquid-cooled air conditioners, the internal space of the horizontal energy storage liquid-cooled air conditioner unit is cramped and the operating space is limited. Therefore, it is necessary to design a microchannel heat exchanger fixing structure that is easy for workers to install and has high installation reliability. Utility Model Content

[0006] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a microchannel heat exchanger fixing structure for a horizontal energy storage liquid-cooled air conditioner, which is convenient for on-site installation and subsequent disassembly and maintenance.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] The microchannel heat exchanger fixing structure of a horizontal energy storage liquid-cooled air conditioner includes a chassis with an upper opening, a U-shaped bracket, and a microchannel heat exchanger mounted on the U-shaped bracket. The U-shaped bracket and the microchannel heat exchanger are vertically installed inside the chassis. The U-shaped bracket includes a base plate and two vertically mounted support arms at both ends of the base plate. Vertically extending studs are welded onto the inner bottom wall of the chassis. At least two first mounting holes are provided on the base plate. After the studs pass through the first mounting holes of the base plate, the U-shaped bracket is locked by nuts.

[0009] As a further improvement to the above technical solution, the base plate includes a base plate body, L-shaped flanges on the front and rear sides of the base plate body, and lower flanges on the left and right sides of the base plate body. Each L-shaped flange has two first mounting holes.

[0010] As a further improvement to the above technical solution, the first mounting hole is an oblong hole.

[0011] As a further improvement to the above technical solution, the support arm includes a rear vertical plate, a side vertical plate, and a top plate disposed on the top of the rear vertical plate and the side vertical plate; in a top view projection, the rear vertical plate and the side vertical plate form an L shape.

[0012] As a further improvement to the above technical solution, the rear vertical plate, side vertical plate and top plate are formed into a whole by bending sheet metal.

[0013] As a further improvement to the above technical solution, two first threaded holes are provided on the side vertical plate, and a second mounting hole corresponding to the first threaded hole is provided on the side of the chassis. The first screw passes through the second mounting hole and connects to the corresponding first threaded hole.

[0014] As a further improvement to the above technical solution, two second threaded holes are provided on the rear vertical plate, the microchannel heat exchanger is provided with lugs, and a third mounting hole is provided on the lugs. The second screw passes through the third mounting hole and connects with the corresponding second threaded hole.

[0015] As a further improvement to the above technical solution, a first sponge strip is provided between the side vertical plate and the chassis, a second sponge strip is provided between the rear vertical plate and the microchannel heat exchanger, the top plates of the two support arms jointly support the third sponge strip, and a fourth sponge strip is provided on the bottom plate.

[0016] As a further improvement to the above technical solution, a cable routing hole is provided on the rear vertical plate of one of the support arms, and a cable guard ring is provided at the cable routing hole.

[0017] The beneficial effects of this utility model are as follows: The microchannel heat exchanger fixing structure provided by this utility model adopts a method of welding studs to the bottom wall of the casing and fastening with nuts. This fixing structure design is simple and compact, which can still facilitate the installation and operation of staff even in the confined space of a horizontal energy storage liquid-cooled air conditioning unit. It makes reasonable use of the limited internal space, meets the compact design requirements of the equipment, and ensures the reliability of the microchannel heat exchanger installation, ensuring the normal and stable operation of the equipment. It is also detachable. When the microchannel heat exchanger fails and needs to be repaired or replaced, the U-shaped bracket and the microchannel heat exchanger can be easily removed by simply unscrewing the nuts. The operation is convenient, greatly reducing equipment downtime, reducing maintenance difficulty and cost, and avoiding structural damage to the casing frame and the microchannel heat exchanger itself caused by welding disassembly. This connection method also provides a stable and reliable connection force, effectively avoiding connection loosening problems caused by vibration and thermal expansion and contraction during long-term operation, ensuring that the position of the microchannel heat exchanger in the casing remains unchanged, maintaining good heat exchange uniformity, ensuring stable overall heat exchange efficiency, and preventing the heat exchange effect from being reduced due to component displacement. Attached Figure Description

[0018] Figure 1 Assembly diagram of the microchannel heat exchanger and U-shaped support provided by this utility model.

[0019] Figure 2 Exploded view of the microchannel heat exchanger and U-shaped support provided by this utility model.

[0020] Figure 3 A schematic diagram showing the structure of the microchannel heat exchanger and the U-shaped support fixed inside the chassis.

[0021] Figure 4 for Figure 3 Enlarged view of a portion of the L region.

[0022] Explanation of main component symbols: 1-Chassis, 2-U-shaped bracket, 21-Base plate, 211-Base plate body, 212-L-shaped flange, 213-Lower flange, 214-First mounting hole, 22-Support arm, 221-Rear vertical plate, 222-Side vertical plate, 223-Top plate, 224-First threaded hole, 225-Second threaded hole, 31-Stud, 32-Nut, 33-First screw, 34-Second screw, 4-Microchannel heat exchanger, 41-Ear, 421-Third mounting hole, 51-First sponge strip, 52-Second sponge strip, 53-Third sponge strip, 54-Fourth sponge strip, 6-Wire guard ring. Detailed Implementation

[0023] This utility model provides a microchannel heat exchanger fixing structure for a horizontal energy storage liquid-cooled air conditioner. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit the scope of protection of this utility model.

[0024] Please see Figures 1 to 4 This utility model provides a microchannel heat exchanger fixing structure for a horizontal energy storage liquid-cooled air conditioner, including a casing 1 with an upper opening, a U-shaped bracket 2, and a microchannel heat exchanger 4 mounted on the U-shaped bracket 2. The U-shaped bracket 2 and the microchannel heat exchanger 4 are vertically installed inside the casing 1. The U-shaped bracket 2 includes a base plate 21 and two vertically mounted support arms 22 at both ends of the base plate 21. Vertically extending studs 31 are welded to the inner bottom wall of the casing 1. At least two first mounting holes 214 are provided on the base plate 21. The studs 31 pass through the first mounting holes 214 of the base plate 21 and are locked to the U-shaped bracket 2 by nuts 32.

[0025] First, vertically extending studs 31 are pre-fixed to the inner bottom wall of the chassis 1 using a seed welding process. These studs 31 serve as the base positioning and connecting components for subsequent installation. Next, the microchannel heat exchanger 4 is installed on the U-shaped bracket 2. The U-shaped bracket 2 can stably support the microchannel heat exchanger 4, ensuring its vertical installation and proper layout and positioning within the chassis 1. Then, the U-shaped bracket 2 with the microchannel heat exchanger 4 is placed into the chassis 1, allowing the studs 31 on the inner bottom wall of the chassis 1 to pass through the first mounting hole 214 on the base plate 21. Nuts 32 are then used to lock the studs 31 above the first mounting hole 214. The tightening force generated by the nuts 32 securely fixes the U-shaped bracket 2 to the inner bottom wall of the chassis 1, thereby indirectly achieving reliable fixation of the microchannel heat exchanger 4 within the chassis 1.

[0026] During the operation of the horizontal energy storage liquid-cooled air conditioner, the microchannel heat exchanger 4, as the core heat exchange component, plays the role of heat transfer and exchange. Because it is firmly fixed in the casing 1 by the U-shaped bracket 2 and the stable studs 31 and nuts 32, it can maintain its position stability even when encountering vibration, thermal expansion and contraction, and ensure that the heat exchange process is stable and efficient.

[0027] The microchannel heat exchanger fixing structure provided by this utility model adopts a method of welding studs 31 to the inner bottom wall of the casing 1 and fastening with nuts 32. This fixing structure design is simple and compact, which can still facilitate the installation operation of the staff in the case of limited internal space of the horizontal energy storage liquid cooling air conditioning casing 1. It makes reasonable use of the limited internal space, meets the compact design requirements of the equipment, and ensures the reliability of the installation of the microchannel heat exchanger 4, ensuring the normal and stable operation of the equipment. It is also detachable. When the microchannel heat exchanger 4 fails and needs to be repaired or replaced, the U-shaped bracket 2 and the microchannel heat exchanger 4 can be easily removed by simply unscrewing the nuts 32. The operation is convenient, which greatly reduces the equipment downtime, reduces the difficulty and cost of maintenance, and avoids the structural damage to the casing 1 frame and the microchannel heat exchanger 4 itself caused by disassembly by welding. This connection method also provides a stable and reliable connection force, effectively avoiding connection loosening caused by vibration and thermal expansion and contraction during long-term operation, ensuring that the microchannel heat exchanger 4 remains fixed in the position of the casing 1, maintaining good heat exchange uniformity, ensuring stable overall heat exchange performance, and preventing the heat exchange effect from being reduced due to component displacement.

[0028] Specifically, the base plate 21 includes a base plate body 211 and L-shaped flanges 212 disposed on the front and rear sides of the base plate body 211. The lower flanges 213 on the left and right sides of the base plate body 211 form a composite edge reinforcement structure with high structural strength. Each L-shaped flange 212 has two first mounting holes 214. The two first mounting holes 214 on the L-shaped flange are used to cooperate with the studs 31 on the inner bottom wall of the chassis 1. This layout design cleverly utilizes the spatial characteristics of the L-shaped flanges. On the one hand, compared to randomly drilling holes on the plane of the base plate 211, drilling holes on the flange can avoid possible interference between the stud 31 and the bottom of the microchannel heat exchanger 4, making the installation process smoother and more orderly. On the other hand, the setting of the two mounting holes conforms to the principle of mechanical stability. Two points determine a straight line. By positioning and tightening the two points, the displacement of the U-shaped bracket 2 in the horizontal direction can be better restricted, preventing problems such as bracket tilting and microchannel heat exchanger 4 displacement caused by uneven force on one side. This greatly improves the reliability of the installation and ensures the long-term stable operation of the equipment.

[0029] Preferably, the first mounting hole 214 is an oblong hole. Compared with the traditional round hole, the oblong hole provides a certain adjustable margin for the stud 31 to pass through the base plate 21 during installation. Due to the compact internal space of the chassis 1, minor errors inevitably accumulate during the manufacturing process and the assembly of various components. When there is a slight deviation between the position of the stud 31 and the first mounting hole 214, the oblong hole's elongated shape allows the stud 31 to pass through easily and the subsequent locking operation of the nut 32 to proceed smoothly. This eliminates the need for additional complex adjustments or rework to the chassis 1 or the U-shaped bracket 2, greatly improving the convenience and efficiency of on-site installation, effectively shortening the installation cycle, and reducing the installation difficulty.

[0030] Specifically, the support arm 22 includes a rear vertical plate 221, a side vertical plate 222, and a top plate 223 disposed on the top of the rear vertical plate 221 and the side vertical plate 222. In a top view, the rear vertical plate 221 and the side vertical plate 222 form an L-shape. The L-shaped structure has good bending and torsional resistance from a mechanical point of view. It can effectively support the weight of the microchannel heat exchanger 4 and resist the external forces from all directions during the operation of the equipment. This ensures that the microchannel heat exchanger 4 maintains a stable posture in the casing 1 and avoids displacement or tilting of the heat exchanger due to deformation of the support structure, thereby ensuring its heat exchange efficiency and stability. The rear vertical plate 221, side vertical plates 222, and top plate 223 are formed into a whole by sheet metal bending. The sheet metal bending process is used to make the rear vertical plate 221, side vertical plates 222, and top plate 223 into a whole. Compared with traditional splicing, welding and other assembly methods, it not only reduces the number of parts and simplifies the production process, but also reduces the risk of assembly errors in the manufacturing process. Moreover, the sheet metal bending process is mature and efficient, which can realize high-precision and mass production, effectively control production costs, improve production efficiency, meet the needs of industrial large-scale production of horizontal energy storage liquid-cooled air conditioners, and ensure product quality consistency.

[0031] Given the limited internal space and compact design requirements of the horizontal energy storage liquid-cooled air conditioning unit 1, this integrated L-shaped support arm 22 features a compact and regular structure that fully utilizes the vertical space within the unit 1, providing reliable support for the microchannel heat exchanger 4 without occupying excessive additional space. Simultaneously, the rear vertical plate 221 and side vertical plates 222 enclose and protect the microchannel heat exchanger 4, preventing potential collisions with foreign objects and dust erosion within the unit 1, reducing the likelihood of damage to the microchannel heat exchanger 4, extending its service life, and ensuring normal operation of the equipment in complex operating environments.

[0032] Furthermore, two first threaded holes 224 are provided on the side vertical plate 222, and a second mounting hole corresponding to the first threaded hole 224 is provided on the side of the casing 1. The first screw 33 passes through the second mounting hole and connects to the corresponding first threaded hole 224. With this arrangement, in addition to the vertical support and fixation of the U-shaped bracket 2 by the bottom stud 31 and nut 32, this lateral connection further restricts the possibility of displacement of the U-shaped bracket 2 (along with the microchannel heat exchanger 4) in the left and right horizontal directions, effectively resisting the lateral forces generated by vibration, airflow impact, etc. during equipment operation, ensuring that the microchannel heat exchanger 4 is accurately positioned in the casing 1, maintaining the uniformity and stability of the heat exchange process, and avoiding the distortion and deformation of the heat exchange pipeline due to lateral shaking, which would affect the heat exchange efficiency.

[0033] Furthermore, the rear vertical plate 221 has two second threaded holes 225, and the microchannel heat exchanger 4 is provided with lugs 41. Each lug 41 has a third mounting hole 421. The second screw 34 passes through the third mounting hole 421 and connects to the corresponding second threaded hole 225. During installation, the installer can first place the microchannel heat exchanger 4 on the U-shaped bracket 2, and by adjusting the relative position of the lugs 41 and the second threaded holes 225 on the rear vertical plate 221, the connection can be easily completed using the second screw 34. This operation is simple and quick, improving installation efficiency. When equipment maintenance or replacement of the microchannel heat exchanger 4 is required, simply unscrewing the second screw 34 allows for easy removal of the microchannel heat exchanger 4 from the U-shaped bracket 2, eliminating the need for extensive disassembly of the entire fixed structure, effectively shortening equipment downtime and reducing maintenance costs.

[0034] Preferably, a first sponge strip 51 is provided between the side vertical plate 222 and the chassis 1, and a second sponge strip 52 is provided between the rear vertical plate 221 and the microchannel heat exchanger 4. During the operation of the horizontal energy storage liquid-cooled air conditioner, vibrations are inevitable. Whether it is mechanical vibration caused by the equipment's own operating components (such as fans, pumps, etc.) or vibration caused by changes in the flow of refrigerant in the refrigeration system, the first sponge strip 51 located between the side vertical plate 222 and the chassis 1, and the second sponge strip 52 located between the rear vertical plate 221 and the microchannel heat exchanger 4, can effectively absorb and buffer the transmission of these vibration energy, reduce the impact of vibration on the structure of the microchannel heat exchanger 4 and the chassis 1, prevent loosening of the connection parts and damage to the internal heat exchange structure of the microchannel heat exchanger 4 due to long-term continuous vibration, maintain the overall stability of the equipment, and extend the service life of the equipment.

[0035] The top plates 223 of the two support arms 22 jointly support the third sponge strip 53, and the bottom plate 21 is provided with a fourth sponge strip 54. The third sponge strip 53 is supported by the top plates 223 of the two support arms 22 and abuts against the top cover of the chassis 1. It can fill the potential gaps at the top of the chassis 1, prevent external dust, moisture and other impurities from entering the interior of the chassis 1, protect the microchannel heat exchanger 4 and other precision components from corrosion and damage, ensure a clean heat exchange working environment, and maintain stable heat exchange efficiency. At the same time, in terms of heat insulation, the sponge strip isolates the heat exchange between the inside and outside of the chassis 1 to a certain extent, reduces the interference of the external ambient temperature on the internal cooling and heat exchange process of the chassis 1, and improves the overall energy efficiency of the system. The fourth sponge strip 54 is placed between the bottom plate 21 and the bottom of the microchannel heat exchanger 4. On the one hand, it helps to fix the microchannel heat exchanger 4 and avoid damage due to friction caused by small displacements; on the other hand, it also plays a role in heat insulation and sealing the bottom gaps, preventing heat loss or external heat intrusion, and optimizing the working conditions of the microchannel heat exchanger 4.

[0036] Preferably, a wiring hole is provided on the rear vertical plate 221 of one of the support arms 22, and a wire guard ring 6 is provided at the wiring hole. Inside the chassis 1 of the horizontal energy storage liquid-cooled air conditioner, various wires or sensor lines are usually connected to the microchannel heat exchanger 4. By providing a wiring hole on the rear vertical plate 221 of the support arm 22, a dedicated channel is provided for these lines, allowing the lines to be neatly and orderly led out or introduced from appropriate locations inside the chassis 1, avoiding the lines being randomly distributed inside the chassis 1. This optimizes the space utilization inside the chassis 1, making the line layout more reasonable and neat, and facilitating the identification and operation of the lines by the staff during maintenance and repair. The wire guard ring 6 can also serve as a buffer and isolation structure, preventing the lines from directly contacting the hard rear vertical plate 221, reducing the risk of line wear, and ensuring the integrity and safety of the lines.

[0037] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; 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 according to the specific circumstances.

[0039] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of this utility model.

Claims

1. A microchannel heat exchanger fixing structure for a horizontal energy storage liquid-cooled air conditioner, characterized in that, The device includes a chassis with an upper opening, a U-shaped bracket, and a microchannel heat exchanger mounted on the U-shaped bracket. The U-shaped bracket and the microchannel heat exchanger are vertically installed inside the chassis. The U-shaped bracket includes a base plate and two vertically mounted support arms at both ends of the base plate. Vertically extending studs are welded onto the inner bottom wall of the chassis. At least two first mounting holes are provided on the base plate. The studs pass through the first mounting holes of the base plate and are locked to the U-shaped bracket by nuts.

2. The microchannel heat exchanger fixing structure of the horizontal energy storage liquid-cooled air conditioner according to claim 1, characterized in that, The base plate includes a base plate body, L-shaped flanges on the front and rear sides of the base plate body, and lower flanges on the left and right sides of the base plate body. Each L-shaped flange has two first mounting holes.

3. The microchannel heat exchanger fixing structure of the horizontal energy storage liquid-cooled air conditioner according to claim 2, characterized in that, The first mounting hole is an oblong hole.

4. The microchannel heat exchanger fixing structure of the horizontal energy storage liquid-cooled air conditioner according to claim 1, characterized in that, The support arm includes a rear vertical plate, a side vertical plate, and a top plate disposed on top of the rear vertical plate and the side vertical plate; in a top view, the rear vertical plate and the side vertical plate form an L shape.

5. The microchannel heat exchanger fixing structure of the horizontal energy storage liquid-cooled air conditioner according to claim 4, characterized in that, The rear vertical plate, side vertical plates, and top plate are formed into a single unit by bending sheet metal.

6. The microchannel heat exchanger fixing structure of the horizontal energy storage liquid-cooled air conditioner according to claim 4 or 5, characterized in that, Two first threaded holes are provided on the side vertical plate, and a second mounting hole corresponding to the first threaded hole is provided on the side of the chassis. The first screw passes through the second mounting hole and connects to the corresponding first threaded hole.

7. The microchannel heat exchanger fixing structure of the horizontal energy storage liquid-cooled air conditioner according to claim 6, characterized in that, The rear vertical plate has two second threaded holes. The microchannel heat exchanger is provided with lugs. The lugs are provided with third mounting holes. The second screw passes through the third mounting hole and connects to the corresponding second threaded hole.

8. The microchannel heat exchanger fixing structure of the horizontal energy storage liquid-cooled air conditioner according to claim 7, characterized in that, A first sponge strip is provided between the side vertical plate and the chassis, a second sponge strip is provided between the rear vertical plate and the microchannel heat exchanger, the top plates of the two support arms jointly support a third sponge strip, and a fourth sponge strip is provided on the bottom plate.

9. The microchannel heat exchanger fixing structure of the horizontal energy storage liquid-cooled air conditioner according to claim 4, characterized in that, One of the support arms has a cable routing hole on its rear vertical plate, and a cable guard ring is provided at the cable routing hole.

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