A pert four-way pipe fitting for a live water circulation

Abstract

The utility model relates to the technical field of heating and water supply and drainage system in building, disclose a kind of pert four-way pipe fittings for running water circulation, including pipe fitting body, the inside fixedly connected with branch pipe water inlet of pipe fitting body, the outer wall fixedly connected with U-shaped pipe of branch pipe water inlet, the outer wall fixedly connected with branch pipe water outlet of U-shaped pipe, the inside fixedly connected with flow block of pipe fitting body, the outer wall fixedly connected in the inside of pipe fitting body of branch pipe water outlet. In the utility model, through the section area difference of pipe fitting body and flow block, convert into pressure difference, finally with pressure difference as driving force, realize water flow automatic from branch pipe water inlet inflow, after U-shaped pipe, the shunt of branch pipe water outlet outflow and running water circulation function, can reach without additional power, reduce system energy consumption, also can reach automatic realization running water circulation, eliminate the effect of branch pipe cold water stagnation.

Description

Technical Field

[0001] This utility model relates to the field of heating, ventilation and air conditioning (HVAC) and water supply and drainage systems in buildings, and in particular to a PERT four-way pipe fitting for circulating water. Background Technology

[0002] PERT four-way fittings for live water circulation are pipe connection components specifically designed for live water circulation systems. Using PERT as the core material, they feature a two-inlet, two-way four-way flow channel structure, while integrating connection ports and sealing components. This allows for precise docking of multiple branch pipes and water flow splitting or merging. The PERT material gives the fittings excellent heat resistance, corrosion resistance, and flexibility, enabling them to adapt to water temperature fluctuations and slight pipe deformation in live water circulation systems, preventing leaks or ruptures. They are widely used in the construction of live water circulation pipe networks in residential, commercial buildings, agricultural facilities, and other scenarios.

[0003] The use of PERT four-way fittings for circulating water must follow a standardized process of pipe pretreatment, fitting positioning, connection and installation, and sealing testing. When using traditional PERT four-way fittings for circulating water, the water flow in the branch pipes relies heavily on an external circulating water pump for power, which increases the system's energy consumption. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a PERT four-way pipe fitting for circulating water, which aims to improve the problem that the circulation of water in branch pipes is relatively dependent on an external circulating water pump for power.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a PERT four-way pipe fitting for circulating water, comprising a pipe fitting body, a branch pipe inlet fixedly connected inside the pipe fitting body, a U-shaped pipe fixedly connected to the outer wall of the branch pipe inlet, a branch pipe outlet fixedly connected to the outer wall of the U-shaped pipe, a flow limiting block fixedly connected inside the pipe fitting body, and the outer wall of the branch pipe outlet fixedly connected inside the pipe fitting body.

[0006] This utility model has the following beneficial effects: 1. In this utility model, the difference in cross-sectional area between the pipe fitting body and the flow limiting block is converted into a pressure difference between the high pressure of the pipe fitting body and the low pressure of the flow limiting block. Finally, the pressure difference is used as the driving force to realize the automatic flow of water from the inlet of the branch pipe, through the U-shaped pipe, and out of the outlet of the branch pipe, achieving the function of diversion and fresh water circulation. It is compatible with the operation requirements of traditional whole-house fresh water systems, achieving the effect of no additional power, reducing system energy consumption, and also achieving automatic fresh water circulation and eliminating the effect of cold water stagnation in the branch pipe. Attached Figure Description

[0007] Figure 1 This is a three-dimensional schematic diagram of a PERT four-way pipe fitting for circulating water according to the present invention. Figure 2 This is a cross-sectional schematic diagram of the internal structure of a PERT four-way pipe fitting for circulating water, as proposed in this utility model. Legend: 1. Pipe body; 2. Branch pipe inlet; 3. U-shaped pipe; 4. Branch pipe outlet; 5. Flow limiting block. Detailed Implementation

[0008] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0009] Reference Figure 1 and Figure 2 An embodiment of this utility model is provided: a PERT four-way pipe fitting for circulating water, including a pipe body 1, a branch pipe inlet 2 fixedly connected inside the pipe body 1, a U-shaped pipe 3 fixedly connected to the outer wall of the branch pipe inlet 2, a branch pipe outlet 4 fixedly connected to the outer wall of the U-shaped pipe 3, a flow limiting block 5 fixedly connected inside the pipe body 1, and the outer wall of the branch pipe outlet 4 fixedly connected inside the pipe body 1.

[0010] Specifically, after the main water flow enters the PERT full circulation 4-way system, due to the change in cross-sectional area from pipe body 1 to branch inlet 2, combined with the continuity equation and Bernoulli's equation, a precise conversion between flow velocity and pressure is achieved. This is because the cross-sectional area of ​​pipe body 1... Much larger than the cross-sectional area of ​​branch pipe inlet 2 According to the continuity equation , can be obtained Substitute the cross-sectional area data above: That is, the water flow velocity inside the branch pipe inlet 2 is four times that of the main pipe—a significant increase in water flow velocity is achieved through the difference in cross-sectional area, according to Bernoulli's equation. Since the result was obtained in step 2 ,but To maintain the conservation of total energy, the pressure term needs to be adjusted in the opposite direction, i.e. —Ultimately, a stable pressure difference is formed between the pipe body 1 and the branch pipe inlet 2. Furthermore, the greater the difference in flow velocity, the more significant the pressure difference. The organic combination of dynamics, fluid mechanics formulas and Venturi principle in the whole-house water system achieves flow velocity enhancement through the difference in cross-sectional area between the pipe body 1 and the flow limiting block 5, using the continuity equation. Then, the Bernoulli equation is used to convert the flow velocity enhancement into a pressure difference between the high pressure of the pipe body 1 and the low pressure of the flow limiting block 5. Finally, the pressure difference is used as the driving force to realize the automatic flow of water from the branch pipe inlet 2, through the U-shaped pipe 3, and out of the branch pipe outlet 10, achieving the function of diversion and water circulation. It is fully compatible with the operation requirements of traditional whole-house water systems in the document, achieving the effect of no additional power, reducing system energy consumption, and automatically realizing water circulation, eliminating the effect of cold water stagnation in the branch pipe.

[0011] Working principle: By utilizing the cross-sectional area difference between the pipe body 1 and the flow-limiting block 5, the flow velocity is increased using the continuity equation. Then, Bernoulli's equation is used to convert the increased flow velocity into a pressure difference between the high pressure in the pipe body 1 and the low pressure in the flow-limiting block 5. Ultimately, the pressure difference serves as the driving force, enabling water to automatically flow in from the branch pipe inlet 2, through the U-shaped pipe 3, and out through the branch pipe outlet 10, achieving a diversion and circulating function. This system is compatible with the operational requirements of traditional whole-house water systems, achieving the goal of eliminating the need for additional power, reducing system energy consumption, and automatically circulating the water to eliminate cold water stagnation in the branch pipes. This four-way fitting can achieve the effect of reducing system energy consumption without the need for additional power, and can also automatically realize the circulation of fresh water and eliminate the stagnation of cold water in the branch pipes.

[0012] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 PERT four-way pipe fitting for circulating water, comprising a fitting body (1), characterized in that: The pipe body (1) is fixedly connected to a branch pipe inlet (2), the outer wall of the branch pipe inlet (2) is fixedly connected to a U-shaped pipe (3), the outer wall of the U-shaped pipe (3) is fixedly connected to a branch pipe outlet (4), the pipe body (1) is fixedly connected to a flow limiting block (5), and the outer wall of the branch pipe outlet (4) is fixedly connected to the inside of the pipe body (1).

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