A small-diameter air conditioner shunt structure
By using a tapered inlet and parallel microchannel design, combined with a flow-slowing mechanism and a removable mounting plate, the problem of uneven refrigerant distribution in small-diameter systems of air conditioning distributors is solved, improving system efficiency and cleanliness, and enhancing the user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 杭州东威制冷设备有限公司
- Filing Date
- 2025-07-09
- Publication Date
- 2026-08-04
AI Technical Summary
Existing air conditioning splitters result in uneven refrigerant distribution in small-diameter systems, leading to increased pressure drop losses, low system efficiency, easy blockage, and poor energy efficiency, making them unsuitable for microchannel requirements.
It adopts a tapered inlet design to optimize flow rate and achieve uniform refrigerant distribution through multiple parallel microchannels. Combined with a slow-flow mechanism and a removable mounting plate structure, it ensures cleanliness and sealing.
It achieves uniform refrigerant distribution, reduces pressure drop, improves system efficiency, prevents blockage, and enhances the practicality and user experience of the device.
Smart Images

Figure CN224593490U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of air conditioning and refrigeration technology, and in particular to a flow distribution structure for a small-diameter air conditioner. Background Technology
[0002] An air conditioner, or air conditioner, is a device that uses artificial means to partially or completely regulate the temperature, humidity, airflow, and cleanliness of air in a closed space, so that the air parameters of the target environment meet the requirements. An air conditioning splitter is a device used in indoor air conditioning systems. Its function is to evenly distribute the cool air generated by the air conditioning system to all corners of the room, ensuring that the air temperature in the entire room is uniform and avoiding uneven heating and cooling. Adding an air conditioning splitter can improve the efficiency of air conditioning and make the air conditioning system better meet comfort needs, thereby bringing a better user experience.
[0003] Existing air conditioning splitters often result in uneven refrigerant distribution in small-diameter systems due to unreasonable flow path design, which increases pressure drop loss and reduces system efficiency. Therefore, traditional structures cannot meet the needs of microchannels, are prone to clogging, and have low energy efficiency.
[0004] Therefore, this application proposes a flow distribution structure for small-diameter air conditioners. Utility Model Content
[0005] This application proposes a flow distribution structure for a small-diameter air conditioner to solve the problems mentioned in the background art. The refrigerant first flows through a tapered inlet, where the reduced cross-sectional area increases the flow velocity and reduces turbulence. After acceleration through the tapered inlet, the refrigerant flows into the distribution chamber, where it is evenly distributed into multiple parallel microchannels. The refrigerant flows in a laminar flow state within the microchannels and is finally output to the air conditioning system through the outlet. Based on fluid dynamics, the tapered design optimizes the inlet flow velocity and reduces pressure drop. The microchannel array increases the heat exchange area and promotes uniform distribution. The overall structure reduces energy loss, improves system efficiency, and greatly enhances the practicality of the device.
[0006] To achieve the above objectives, this application adopts the following technical solution: A flow distribution structure for a small-diameter air conditioner includes a tapered inlet section, a flow distribution chamber, and an outlet connection assembly. The flow distribution structure is cylindrical in shape and includes an inlet section, a flow distribution chamber, and an outlet section from top to bottom. The inlet section is located at the top of the device, the flow distribution chamber is connected below the inlet section, and the outlet section is located at the bottom and is provided with an external pipe interface. The outlet section interface is welded to an external pipe. The interior of the flow distribution chamber integrates multiple parallel microchannels, which are evenly distributed on the inner wall of the flow distribution chamber.
[0007] In a preferred embodiment, each of the parallel microchannels is formed by a plurality of mounting plates, and a mounting frame is installed inside the diversion chamber, with each mounting plate and the mounting frame being detachably connected; The parallel microchannels are formed by mounting plates, which are detachably connected to the mounting frame. Each mounting plate can be cleaned simply by removing it from the groove on the mounting frame, thus improving the practicality of the device.
[0008] In a preferred embodiment, the mounting bracket has multiple grooves inside, and both sides of each mounting plate are engaged inside the grooves; By connecting the cleaned mounting plate to the groove on the mounting frame, subsequent cleaning of the microchannels is facilitated, the cleaning effect of the microchannels is improved, and blockages are prevented during use, thereby enhancing the practicality of the device.
[0009] In a preferred embodiment, the inlet section is provided with a tapered opening that is wider at the top and narrower at the bottom; The inlet flow rate is optimized by using a tapered design, which reduces pressure drop and thus improves the practicality of the device.
[0010] In a preferred embodiment, each of the parallel microchannels is provided with a flow-slowing mechanism, which includes a flow-slowing plate, and two flow-slowing plates are symmetrically arranged inside the parallel microchannel. By adding a flow-slowing mechanism within the parallel microchannels, with the flow-slowing plates symmetrically arranged within the parallel microchannels, the flow velocity can be effectively reduced and the impact force decreased, thereby improving the practicality of the device.
[0011] In a preferred embodiment, the inlet section, the diversion chamber, and the outlet section are connected by flange bolts; By using flanges to connect the inlet section, the diversion chamber, and the outlet section, not only is disassembly and connection convenient and quick, but the flanges also have built-in sealing rings, which can improve the sealing performance and thus enhance the practicality of the device.
[0012] The beneficial effects of this application are: 1. The flow distribution structure of this small-diameter air conditioner involves the refrigerant first flowing through a tapered inlet section. The reduced cross-sectional area increases the flow velocity and reduces turbulence. After acceleration through the tapered inlet, the refrigerant flows into the distribution chamber, where it is evenly distributed into multiple parallel microchannels. The refrigerant flows in a laminar state within the microchannels and is finally output to the air conditioning system through the outlet section. Based on fluid dynamics, the tapered design optimizes the inlet flow velocity and reduces pressure drop. The microchannel array increases the heat exchange area and promotes uniform distribution. The overall structure reduces energy loss, improves system efficiency, and greatly enhances the practicality of the device. 2. In this type of flow distribution structure for small-diameter air conditioners, when the microchannels need to be cleaned, since the parallel microchannels are formed by mounting plates and the mounting plates are detachably connected to the mounting bracket, each mounting plate can be cleaned simply by removing it from the groove on the mounting bracket, preventing blockage during use. By adding a flow-slowing mechanism in the parallel microchannels, with the flow-slowing plates symmetrically arranged in the parallel microchannels, the flow velocity can be effectively reduced and the impact force can be decreased, greatly improving the practicality of the device. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of the device in this application; Figure 2 This is a schematic diagram of the internal structure of the device in this application; Figure 3 This is a top view of the interior of the flow splitting chamber of the device in this application; Figure 4 For this application Figure 3 Enlarged view of point A in the middle.
[0014] The following are the labels in the diagram: 1. Inlet section; 2. Diversion chamber; 3. Outlet section; 4. Gradually conical inlet; 5. Parallel microchannel; 51. Mounting plate; 52. Mounting bracket; 53. Groove; 6. Flow control mechanism; 61. Flow control plate; 7. External pipe interface; 8. Flange. Detailed Implementation
[0015] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.
[0016] Reference Figure 1-4 A flow distribution structure for a small-diameter air conditioner includes a tapered inlet section 1, a flow distribution chamber 2, and an outlet connection assembly. The flow distribution structure is cylindrical in shape and includes an inlet section 1, a flow distribution chamber 2, and an outlet section 3 from top to bottom. The inlet section 1 is located at the top of the device, the flow distribution chamber 2 is connected below the inlet section 1, and the outlet section 3 is located at the bottom. An external pipe interface 7 is provided, and the outlet section 3 interface is welded to an external pipe. The interior of the flow distribution chamber 2 integrates multiple parallel microchannels 5, which are evenly distributed on the inner wall of the flow distribution chamber 2.
[0017] Reference Figure 2-4 Each parallel microchannel 5 is formed by several mounting plates 51. The inside of the diversion chamber 2 is equipped with a mounting frame 52. Each mounting plate 51 is detachably connected to the mounting frame 52. Since the parallel microchannel 5 is formed by mounting plates 51 and the mounting plates 51 are detachably connected to the mounting frame 52, each mounting plate 51 can be cleaned simply by removing it from the groove 53 on the mounting frame 52, thereby improving the practicality of the device.
[0018] Reference Figure 2-4 The mounting frame 52 has multiple grooves 53 inside, and both sides of each mounting plate 51 are engaged inside the grooves 53. By connecting the cleaned mounting plate 51 to the grooves 53 on the mounting frame 52, it is convenient for subsequent cleaning of the microchannel, improves the cleaning effect of the microchannel, prevents blockage during use, and thus enhances the practicality of the device.
[0019] Reference Figure 1-2 The inlet section 1 is equipped with a tapered conical opening 4, which is wider at the top and narrower at the bottom. The tapered design optimizes the inlet flow velocity and reduces the pressure drop, thereby improving the practicality of the device.
[0020] Reference Figure 2 Each parallel microchannel 5 is equipped with a flow-slowing mechanism 6, which includes a flow-slowing plate 61. Two flow-slowing plates 61 are symmetrically arranged inside the parallel microchannel 5. By adding the flow-slowing mechanism 6 inside the parallel microchannel 5 and symmetrically arranging the flow-slowing plates 61 inside the parallel microchannel 5, the flow velocity can be effectively reduced and the impact force can be decreased, thereby improving the practicality of the device.
[0021] Reference Figure 1 The inlet section 1, the diversion chamber 2, and the outlet section 3 are connected by flange 8 bolts. By using flange 8 to connect the inlet section 1, the diversion chamber 2, and the outlet section 3, not only is disassembly and connection convenient and quick, but the flange 8 also has a built-in sealing ring, which can improve the sealing performance and thus enhance the practicality of the device.
[0022] Working Principle: The system employs a flow divider structure, ensuring inlet section 1 is aligned with the refrigerant supply source. Outlet section 3 is connected to the air conditioning duct. The system is started and flow rate monitored. Before installation, the interior is cleaned to prevent blockage. The refrigerant first flows through the tapered inlet 4 of inlet section 1. The reduced cross-sectional area increases the flow velocity, reducing turbulence. The flow is accelerated through the tapered inlet 4, after which the refrigerant flows into the flow divider chamber 2. The refrigerant is evenly distributed into multiple parallel microchannels 5, where it flows in a laminar state. Finally, it is output to the air conditioning system through outlet section 3. Based on fluid dynamics, the tapered design optimizes the inlet flow velocity and reduces pressure drop. The microchannel array increases the heat exchange area, promoting uniform distribution. The overall structure reduces energy loss and improves system efficiency. During operation, avoid overpressure operation. During maintenance, disassemble and clean the microchannels regularly. Use corrosion-resistant sealing materials to ensure compatibility. When cleaning the microchannels is required, since the parallel microchannels 5 are formed by mounting plates 51, and the mounting plates 51 are detachably connected to the mounting bracket 52, you only need to remove the mounting plates 51 from the grooves 53 on the mounting bracket 52 to clean each mounting plate 51. After cleaning, the mounting plates 51 are then fixed to the mounting bracket 52, which facilitates subsequent cleaning of the microchannels, improves the cleaning effect of the microchannels, and prevents blockage during use. By adding a flow-slowing mechanism 6 in the parallel microchannels 5, and the flow-slowing plates 61 are symmetrically arranged in the parallel microchannels 5, the flow velocity can be effectively reduced and the impact force can be reduced.
[0023] The above are merely preferred embodiments of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and the inventive concept of this application, should be included within the scope of protection of this application.
Claims
1. A flow splitting structure for a small tube diameter air conditioner, comprising a tapered inlet section (1), a flow splitting chamber (2) and an outlet connection assembly, characterized in that, The diversion structure device is cylindrical in shape and includes an inlet section (1), a diversion chamber (2), and an outlet section (3) from top to bottom. The inlet section (1) is located at the top of the device, the diversion chamber (2) is connected below the inlet section (1), and the outlet section (3) is located at the bottom and is provided with an external pipe interface (7). The outlet section (3) interface is welded to the external pipe. The diversion chamber (2) integrates multiple parallel microchannels (5) inside, and the microchannels are evenly distributed on the inner wall of the diversion chamber (2).
2. The flow splitting structure of a small tube diameter air conditioner according to claim 1, wherein Each of the parallel microchannels (5) is formed by a plurality of mounting plates (51), and a mounting frame (52) is installed inside the diversion chamber (2), and each of the mounting plates (51) is detachably connected to the mounting frame (52).
3. The flow splitting structure of a small tube diameter air conditioner according to claim 2, wherein The mounting bracket (52) has multiple grooves (53) inside, and both sides of each mounting plate (51) are engaged inside the grooves (53).
4. The flow splitting structure of a small tube diameter air conditioner according to claim 1, wherein The entrance section (1) is provided with a tapered opening (4) inside, which is wider at the top and narrower at the bottom.
5. The flow dividing structure of a small duct air conditioner according to claim 1, wherein Each of the parallel microchannels (5) is provided with a flow-slowing mechanism (6), which includes a flow-slowing plate (61). Two flow-slowing plates (61) are symmetrically arranged inside the parallel microchannel (5).
6. The flow splitting structure of a small tube diameter air conditioner according to claim 1, wherein The inlet section (1), the diversion chamber (2) and the outlet section (3) are connected by flanges (8) and bolts.