A heating, ventilation, and plumbing (HVAC) water distribution unit
Patent Information
- Application Number
- CN202522670607.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-17
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-17
AI Technical Summary
Existing HVAC manifolds with top-inlet and top-outlet designs are prone to impurity buildup, leading to unstable equipment operation and frequent maintenance.
A water distributor is installed inside the water manifold to guide the water flow in a circular motion, and a Y-type filter is used to filter impurities, reduce sedimentation, and improve equipment stability.
It effectively slows down the deposition of impurities, reduces the frequency of maintenance, ensures long-term stable operation of equipment, and improves system operating efficiency.
Smart Images

Figure CN224932821U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heating, ventilation and air conditioning (HVAC) equipment technology, and specifically to an HVAC manifold. Background Technology
[0002] In fields involving water circulation, such as HVAC, water distributors and water collectors are frequently used, collectively referred to as water distribution and manifolds. Water distributors can separate water flow into different branches to go to different loads, while water collectors can collect water flow from different branches and then circulate it.
[0003] The models of manifolds are relatively complete, including top-inlet / bottom-outlet, bottom-inlet / top-outlet, and top-inlet / top-outlet. In actual installation, a reasonable choice can be made according to the spatial layout of the factory and equipment. However, for conventional installation methods, top-inlet / top-outlet avoids laying a large number of pipes below the manifold and collector, which is undoubtedly the easiest to install. However, top-inlet / top-outlet also has some drawbacks. The upward flow of water can easily cause short-circuiting or dead zones in the container, which will cause the accumulation of impurities, affecting the stable operation and service life of the equipment. Therefore, a drain pipe is often installed at the bottom of the top-inlet / top-outlet manifold for the periodic discharge of accumulated impurities.
[0004] Since manifolds are relatively closed pressure vessels, and top-inlet and top-outlet types often only have a single drain pipe at the bottom with a relatively small diameter, flushing the inside of the container is time-consuming and labor-intensive. Therefore, this utility model proposes a HVAC manifold that, through the arrangement of the water inlet inside the manifold, disturbs the water in the container, thereby effectively slowing down the deposition of impurities. The deposited impurities are then collected and discharged through a filter on the pipe, thereby reducing the frequency of maintenance and ensuring the continuous and stable operation of the equipment. Utility Model Content
[0005] The purpose of this utility model is to address the shortcomings of the existing technology by providing a HVAC manifold that can reduce the accumulation of impurities inside the manifold container, effectively reduce the frequency of maintenance and cleaning, and effectively ensure the long-term continuous and stable operation of the equipment.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a heating and ventilation manifold, comprising a top-inlet and top-outlet manifold and a water collector, wherein a water distribution inlet is provided on the manifold and a return water inlet is provided on the water collector, a first water distributor is provided below the water distribution inlet and a second water distributor is provided below the return water inlet; the water outlet cross-section of the first water distributor and the second water distributor is square and flows out tangentially along the inner sidewall of the corresponding manifold or water collector.
[0007] Furthermore, the first water distributor includes a first buffer ball trough, which is located inside the water distributor and below the water inlet. The first buffer ball trough is connected to a first central water outlet arc-shaped square tube, which is attached to the wall. The second water distributor includes a second buffer ball trough, which is located inside the water collector and below the return water inlet. The second buffer ball trough is connected to a second central water outlet arc-shaped square tube, which is attached to the wall.
[0008] Furthermore, a first side water outlet arc-shaped square tube is provided on both sides of the first central water outlet arc-shaped square tube, and the first side water outlet arc-shaped square tube is attached to the wall; a second side water outlet arc-shaped square tube is provided on both sides of the second central water outlet arc-shaped square tube, and the second side water outlet arc-shaped square tube is attached to the wall.
[0009] The water distributor is also equipped with a water distribution outlet, and the water collector is also equipped with a return water outlet; the water distribution inlet is connected to the main water inlet pipe, and the water distribution outlet is connected to the branch pipe; the return water inlet is correspondingly set to the water distribution outlet and connected to the corresponding branch pipe, and the return water outlet is connected to the return water main pipe; corresponding parallel pipes are set at both ends of the main water inlet pipe, each branch pipe, and the return water main pipe, and a first control valve and a second control valve are respectively set on the parallel pipes, and a Y-type filter is set between the first control valve and the second control valve.
[0010] Furthermore, control valves are installed at both ends of the main inlet pipe, each branch pipe, and the return pipe, with the parallel pipes located in front of the corresponding control valves according to the water flow direction.
[0011] Furthermore, the inlet main pipe and each branch pipe are equipped with flow indicators at their front ends, with the flow indicators located at the rear ends of each control valve, according to the direction of water flow.
[0012] Furthermore, both the water distributor and the water collector are equipped with drain pipes below them, and each drain pipe is equipped with a control valve.
[0013] Furthermore, both the water distributor and the water collector are equipped with pressure gauge mounting ports and temperature gauge mounting ports. Pressure gauges are installed through the pressure gauge mounting ports, and temperature gauges are installed through the temperature gauge mounting ports.
[0014] The beneficial effects of this utility model are: 1. This utility model sets up a water distributor at the water inlet inside the water distributor to guide the water flow in a circular motion, thereby disturbing the water in the container, effectively slowing down the deposition of impurities, effectively reducing the cleaning frequency, and effectively ensuring the long-term stable operation of the equipment. 2. This utility model has parallel pipes installed at both ends of the main inlet pipe, each branch pipe, and the return pipe, and Y-type filters are installed on the parallel pipes. By installing filters, impurities in the water flow can be filtered and discharged in a timely manner, thereby further ensuring the stable operation of the system. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the layout and installation of this utility model; Figure 2 This is a schematic cross-sectional view of the water distributor AA of this utility model; Figure 3 This is a schematic diagram of the longitudinal section of the water distributor of this utility model; Figure 4 This is a schematic cross-sectional view of the water collector BB of this utility model; Figure 5 This is a schematic diagram of the longitudinal section of the water collector of this utility model; Figure 6 This is a schematic diagram of the installation of Y-type filters on various pipelines.
[0016] The names corresponding to each mark in the diagram: 1. Water distributor; 11. Water inlet; 12. Water outlet; 13. First drain outlet; 14. First water distributor; 141. First buffer ball trough; 142. First central outlet arc-shaped square pipe; 143. First side outlet arc-shaped square pipe; 2. Water collector; 21. Return water inlet; 22. Return water outlet; 23. Second drain outlet; 24. Second water distributor; 241. Second buffer ball trough; 242. Second central outlet arc-shaped square pipe; 243. Second side outlet arc-shaped square pipe; 3. Main inlet pipe; 4. Branch pipes; 5. Main return water pipe; 6. Drain pipe; 7. Parallel pipes; 71. First control valve; 72. Second control valve; 73. Y-type filter. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.
[0018] Embodiments of this utility model: like Figures 1-6 As shown, the HVAC manifold 2 of this utility model includes a manifold 1 and a collector 2. The manifold 1 is provided with a water inlet 11 and a water outlet 12. The water inlet 11 is connected to the main water inlet pipe 3, and multiple water outlets 12 are provided and are respectively connected to the corresponding branch pipes 4.
[0019] The water collector 2 is equipped with a return water inlet 21 and a return water outlet 22. Multiple return water inlets 21 are provided and are connected to the corresponding branch pipes 4 respectively. The return water outlet 22 is connected to the return water main pipe 5.
[0020] A base is provided below the water distributor 1 and the water collector 2; a first drain outlet 13 is provided at the bottom of the water distributor 1 and a second drain outlet 23 is provided at the bottom of the water collector 2. The first drain outlet 13 and the second drain outlet 23 are respectively connected to the drain pipe 6, and a control valve is provided on the drain pipe 6 connected to each drain outlet.
[0021] Flow indicators are installed on the main inlet pipe 3 and each branch pipe 4; temperature indicator ports and pressure indicator ports are installed on the water distributor 1 and the water collector 2 respectively, and temperature indicator instruments and pressure indicator instruments are installed on them respectively.
[0022] Parallel pipes 7 are respectively installed on the main inlet pipe 3, both ends of each branch pipe 4, and the main return pipe 5. A first control valve 71 and a second control valve 72 are respectively installed on each parallel pipe 7. A Y-type filter 73 is installed between the first control valve 71 and the second control valve 72. Control valves are installed on the main inlet pipe 3, both ends of each branch pipe 4, and the main return pipe 5. The parallel pipes 7 are located at the front end of the control valves on the corresponding pipes (based on the direction of water flow).
[0023] In the water distributor 1, the water inlet 11 is connected to the first water distributor 14. The first water distributor 14 includes a first buffer ball groove 141 located below the water inlet 11. The first buffer ball groove 141 is connected to the first central outlet arc-shaped square tube 142. First side outlet arc-shaped square tubes 143 are respectively provided on both sides of the first central outlet arc-shaped square tube 142. In the water collector 2, the return water inlet 21 is connected to the second water distributor 24. The second water distributor 24 includes a second buffer ball groove 241 located below the return water inlet 21. The second buffer ball groove 241 is connected to the second central outlet arc-shaped square tube 242. Second side outlet arc-shaped square tubes 243 are respectively provided on both sides of the second central outlet arc-shaped square tube 242.
[0024] The first central outlet arc-shaped square tube 142, the first side outlet arc-shaped square tube 143, the second central outlet arc-shaped square tube 242, and the second side outlet arc-shaped square tube 243 are all wall-mounted arc-shaped installations, and their respective outlets are square. The water outlet direction of the first central outlet arc-shaped square tube 142 and the second central outlet arc-shaped square tube 242 is a vertical tangential direction, while the water outlet direction of the first side outlet arc-shaped square tube 143 and the second side outlet arc-shaped square tube 243 is an inclined tangential direction. By setting the tangential water outlet direction, the water in the water distributor 1 and the water collector 2 is disturbed, avoiding short-circuiting and dead zones, and reducing pollutant deposition.
[0025] The principle of this utility model is as follows: In use, the present invention has a first water distributor 14 installed inside the water distributor 1, below the water inlet 11 and attached to the wall; a second water distributor 24 installed inside the water collector 2, below the return water inlet 21 and attached to the wall; and Y-type filters 73 are installed on both ends of the main inlet pipe 3, each branch pipe 4, and the return water main pipe 5.
[0026] Therefore, in the process of using this utility model, on the one hand, the water in the water distributor 1 and the water collector 2 is disturbed by the first water distributor 14 and the second water distributor 24 to avoid short flow and dead flow zones, thereby effectively avoiding the deposition of impurities, and thus effectively reducing the frequency of maintenance and reducing maintenance costs; on the other hand, the Y-type filter 73 is set to filter out impurities in the pipeline. The filter is set with one filter in use and one on standby, which is convenient for maintenance and replacement, and effectively ensures the continuous and stable operation of the equipment.
Claims
1. A heating, ventilation, air conditioning (HVAC) manifold, comprising a top-inlet and top-outlet manifold (1) and a collector (2), wherein the manifold (1) is provided with a water distribution inlet (11) and the collector (2) is provided with a return water inlet (21), characterized in that: A first water distributor (14) is provided below the water inlet (11), and a second water distributor (24) is provided below the return water inlet (21). The water outlet cross section of the first water distributor (14) and the second water distributor (24) is square and flows out tangentially along the inner wall of the corresponding water distributor (1) or water collector (2).
2. A heating, ventilation, and air conditioning (HVAC) manifold according to claim 1, characterized in that: The first water distributor (14) includes a first buffer ball groove (141), which is located inside the water distributor (1) and below the water inlet (11). The first buffer ball groove (141) is connected to the first central outlet arc-shaped square tube (142), which is set against the wall. The second water distributor (24) includes a second buffer ball groove (241), which is located inside the water collector (2) and below the return water inlet (21). The second buffer ball groove (241) is connected to the second central outlet arc-shaped square tube (242), which is set against the wall.
3. A heating, ventilation, and air conditioning (HVAC) manifold according to claim 2, characterized in that: The first central water outlet arc-shaped square tube (142) is provided with a first side water outlet arc-shaped square tube (143) on both sides, and the first side water outlet arc-shaped square tube (143) is attached to the wall; the second central water outlet arc-shaped square tube (242) is provided with a second side water outlet arc-shaped square tube (243) on both sides, and the second side water outlet arc-shaped square tube (243) is attached to the wall.
4. A heating, ventilation, and air conditioning (HVAC) manifold according to claim 1, characterized in that: The water distributor (1) is also provided with a water outlet (12), and the water collector (2) is also provided with a return water outlet (22); the water inlet (11) is connected to the main water inlet pipe (3), and the water outlet (12) is connected to the branch pipe (4); the return water inlet (21) is correspondingly provided with the water outlet (12) and connected to the corresponding branch pipe (4), and the return water outlet (22) is connected to the return water main pipe (5); corresponding parallel pipes (7) are provided at both ends of the main water inlet pipe (3), each branch pipe (4) and the return water main pipe (5), and a first control valve (71) and a second control valve (72) are respectively provided on the parallel pipes (7), and a Y-type filter (73) is provided between the first control valve (71) and the second control valve (72).
5. A heating, ventilation, and air conditioning (HVAC) manifold according to claim 4, characterized in that: Control valves are installed at both ends of the main inlet pipe (3), each branch pipe (4), and the return main pipe (5). In terms of water flow direction, the parallel pipes (7) are located at the front end of the corresponding control valves.
6. A heating, ventilation, and air conditioning (HVAC) manifold according to claim 5, characterized in that: The inlet main pipe (3) and each branch pipe (4) are equipped with flow indicators at the front end, with the flow direction as the indicator and the flow indicator at the rear end of each control valve.
7. A heating, ventilation, and air conditioning (HVAC) manifold according to claim 1, characterized in that: Both the water distributor (1) and the water collector (2) are provided with a drain pipe (6) below them, and each drain pipe (6) is provided with a control valve.
8. A heating, ventilation, and air conditioning (HVAC) manifold according to claim 1, characterized in that: The water distributor (1) and the water collector (2) are both equipped with pressure gauge installation ports and temperature gauge installation ports. Pressure gauges are installed through the pressure gauge installation ports and temperature gauges are installed through the temperature gauge installation ports.
