A water mixing pump station

Abstract

The utility model provides a kind of water mixing pump station, including A pipe, B pipe, C pipe, D pipe, E pipe, valve one, valve two, electric two-way valve, circulating water pump and water mixing controller;A pipe can be located above B pipe, also can be located below B pipe;C pipe one end is connected B pipe, other end is connected with A pipe;Circulating water pump is connected with the port of E pipe and D pipe by loose joint, D pipe is connected with one end of A pipe, other end of E pipe is connected with B pipe;Valve one is installed on B pipe, valve two is installed on D pipe close to circulating water pump side, or valve two is installed on E pipe;Electric two-way valve is installed on C pipe, water mixing controller is connected with electric two-way valve by electric two-way valve control line.The utility model does not use three-way valve, but uses small size electric two-way valve to adjust low temperature cold water entering amount, realizes the function of water mixing temperature adjustment.

Description

Technical Field

[0001] This utility model relates to the field of radiant cooling technology, and in particular to a mixing pump station. Background Technology

[0002] In summer, radiant cooling water systems in central air conditioning systems include: constant temperature, humidity, and thermal stability systems; underfloor heating and cooling; wall cooling; ceiling cooling; and building temperature control. The building surface temperature must not be lower than the dew point temperature. If the surface temperature is below the dew point, condensation will occur, causing indoor mold growth, resulting in economic losses for users, and even affecting their health. The outlet water temperature of the heat source unit is usually low, generally set between 7-17 degrees Celsius, below the dew point temperature. To prevent condensation on the radiant cooling surfaces and building surfaces, a mixing pump station is required to raise the outlet water temperature before delivering it to the underfloor heating system and capillary network.

[0003] Currently existing mixing pump stations utilize a patented design from Beijing Baisui Technology Co., Ltd. (application number 2022210719482). The core component is an electric three-way valve, which adjusts the ratio of low-temperature cold water to underfloor heating return water to achieve variable or constant water temperature control. Existing mixing pump stations have the following technical defects: 1) If the mixing pump station is not working for a long time in spring or autumn, the three-way valve may become stuck due to copper rust, and the mixing pump station will not work. 2) The three-way valve is prone to jamming, which prevents the mixing pump station from adjusting the temperature, causing condensation in users' homes and even leading to mold growth in indoor decorations, resulting in significant economic losses. 3) Existing mixing pump stations are costly; 4) The existing mixing pump station has a small main pipe diameter and a small system flow rate. A single mixing pump station can usually only meet the radiant cooling needs of a building area of ​​100 square meters. Utility Model Content

[0004] To solve at least one of the technical problems in the background art, the present invention provides a mixing pump station that does not use a three-way valve, but instead uses a small-sized electric two-way valve to regulate the inflow of low-temperature cold water, thereby achieving the function of mixing and temperature regulation.

[0005] The technical solution adopted by this utility model to solve the technical problem is as follows: A mixing pump station includes: pipe A, pipe B, pipe C, pipe D, pipe E, valve one, valve two, an electric two-way valve, a circulating water pump, and a mixing controller; pipe A can be located above or below pipe B; one end of pipe C is connected to pipe B, and the other end is connected to pipe A; the circulating water pump is connected to the ports of pipe E and pipe D via a union, with one end of pipe D connected to pipe A and the other end of pipe E connected to pipe B; valve one is installed on pipe B; valve two is installed on the side of pipe D near the circulating water pump, or valve two is installed on pipe E; the electric two-way valve is installed on pipe C, and the mixing controller is connected to the electric two-way valve via an electric two-way valve control line.

[0006] Furthermore, it also includes a temperature sensor, which is attached to pipe E or placed at any position in the pipeline between pipe D and the underfloor heating manifold, and the temperature sensor is connected to the mixing controller via a temperature sensor signal line.

[0007] Furthermore, the electric two-way valve preferably uses a 0-10V variable flow electric two-way valve, but a switch-on type electric two-way valve can also be selected.

[0008] Furthermore, pipes A, B, C, D, and E are made of PPR pipes, and the pipes are connected to each other by PPR heat fusion; or pipes A, B, C, D, and E are made of metal fittings and are connected by welding or threading.

[0009] Furthermore, the mixing pump station enclosure is made of cold-rolled steel plate or stainless steel; all components are installed inside the mixing pump station enclosure, and the gaps inside the enclosure are filled with polyurethane foam for insulation, or rubber insulation cotton is used to insulate the pipes.

[0010] Furthermore, during summer operation of the mixing pump station, valve one is closed and valve two is opened, the circulating water pump runs, and the electric two-way valve adjusts the opening degree of the electric two-way valve according to the signal of the mixing controller, thereby controlling the low-temperature cold water intake to achieve precise temperature regulation. Low-temperature cold water enters from the main unit's water supply port, enters pipe A through an electric two-way valve, mixes with the underfloor heating return water to produce mixed water that flows to pipe D. Part of the mixed water is pumped through the circulating water pump and enters the underfloor heating and capillary network through pipe E via the underfloor heating water supply port. The other part of the mixed water returns to the main unit or buffer water tank through the main unit's return water port. The opening degree of the electric two-way valve is determined by the difference between the mixing water temperature measured by the temperature sensor and the water temperature set by the mixing controller. The larger the difference, the larger the opening degree of the electric two-way valve. When the difference decreases, the opening degree of the electric two-way valve also decreases. When the measured mixing water temperature is equal to or lower than the water temperature set by the mixing controller, the mixing controller will close the electric two-way valve.

[0011] Furthermore, during winter operation, valve one is opened, valve two is closed, the electric two-way valve is closed, and the circulating water pump is stopped; hot water from the main unit enters from the main unit's water supply port, flows out through valve one from the underfloor heating water supply port, and enters the underfloor heating or capillary network; the underfloor heating return water enters from the underfloor heating return port, and returns to the main unit or buffer tank through the main unit's return port.

[0012] The beneficial effects of this utility model are: (1) This utility model provides a mixing pump station that only requires a small-sized electric two-way valve to adjust the inflow of low-temperature cold water, and the probability of valve jamming is extremely low. (2) Small-sized electric two-way valves are low in cost. PPR pipes are preferred for the entire set of mixing pump station pipelines. PPR hot-melt connection is mainly used between pipelines, which significantly reduces the cost compared with the existing scheme. (3) The mixing pump station of this utility model has a large main pipe diameter and a large flow rate. A single mixing pump station can meet the radiant cooling needs of a building area of ​​more than 300 square meters. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the left and right connections of the main pipe of a mixing pump station; Figure 2 This is a schematic diagram of the upper and lower connections of the main pipe of the mixing pump station; Figure 3 Disassembly diagram of the left and right connecting parts of the main pipe of the mixing pump station; Figure 4 Disassembly diagram of the upper and lower connecting components of the main pipe of the mixing pump station; Figure 5 This is a diagram showing the water flow direction in summer for a mixed water pump station with left and right main pipe connections; the arrows inside the pipe indicate the direction of water flow.

[0014] Figure 6 This is a diagram showing the water flow direction in summer for the main pipe of a mixed water pump station; the arrows inside the pipe indicate the direction of water flow.

[0015] Figure 7 This is a diagram showing the water flow direction in winter for a mixed-water pump station with left and right main pipe connections; the arrows inside the pipe indicate the direction of water flow.

[0016] Figure 8 This is a diagram showing the water flow direction in winter for the main pipe of a mixed water pump station with connections at both ends; the arrows inside the pipe indicate the direction of water flow.

[0017] In the figure: Pipe A; 2-Pipe B; 3-Pipe C; 4-Pipe D; 5-Pipe E; 6-Valve 1; 7-Valve 2; 8-Electric two-way valve; 9-Circulating water pump; 10-Temperature sensor; 11-Mixing controller; 12-Temperature sensor signal line; 13-Electric two-way valve control line; 14-Mixing pump station housing; 15-Main unit water supply port; 16-Main unit water return port; 17-Underfloor heating water supply port; 18-Underfloor heating water return port.

[0018] The main unit water supply port 15 is connected to the main unit water outlet pipe or the fan coil water supply pipe, located to the left of pipe B2 of the left-right installation type mixing pump station; or below pipe B2 of the top-bottom installation type mixing pump station.

[0019] The main unit return port 16 is connected to the main unit return pipe or the buffer water tank return pipe, located to the left of the D pipe 4 of the left-right installation type mixing pump station; or below the D pipe 4 of the top-bottom installation type mixing pump station.

[0020] The underfloor heating water supply inlet 17 is located on the right side of pipe B2 of the underfloor heating or capillary network water supply main, or above pipe B2 of the vertically installed mixing pump station.

[0021] The underfloor heating return inlet 18 is located on the right side of pipe A1 of the underfloor heating or capillary network return main pipe, or above pipe A1 of the vertically installed mixing pump station. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, 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, 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.

[0023] This utility model is mainly used for building radiant cooling, such as five-constant systems, underfloor heating cooling, wall cooling, ceiling cooling, and building temperature regulation. In summer, when supplying low-temperature cold water to underfloor heating pipes or capillary networks, to prevent excessive water temperature from causing condensation on the radiant cooling surfaces, the supply water temperature needs to be increased to avoid condensation. This utility model mainly solves the problems of existing mixing pump stations being prone to jamming and failing to operate normally, as well as the problems of low flow rate and high cost of existing mixing pump stations.

[0024] refer to Figure 1-4This utility model provides a mixing pump station, including: pipe A1, pipe B2, pipe C3, pipe D4, pipe E5, valve 6, valve 7, electric two-way valve 8, circulating water pump 9, and mixing controller 11; pipe A1 can be located above or below pipe B2; one end of pipe C3 is connected to pipe B2, and the other end is connected to pipe A1; the circulating water pump 9 is connected to the ports of pipe E5 and pipe D4 via a union, and one end of pipe D4 is connected to pipe A1, and the other end of pipe E5 is connected to pipe B2; valve 6 is installed on pipe B2, valve 7 is installed on the side of pipe D4 near the circulating water pump 9, or valve 7 is installed on pipe E; the electric two-way valve 8 is installed on pipe C3, and the mixing controller 11 is connected to the electric two-way valve 8 via an electric two-way valve control line 13.

[0025] To further optimize the technical solution, the electric two-way valve 13 preferably uses a 0-10V variable flow electric two-way valve, but a switch-on type electric two-way valve can also be selected.

[0026] This invention also includes a temperature sensor 10, which is attached to pipe E 5 or placed at any position on the pipe between pipe D 4 and the underfloor heating manifold. The temperature sensor 10 is connected to the mixing controller 11 via a temperature sensor signal line 12. The mixing controller 11 can be set to a fixed mixing temperature or can adjust the mixing temperature by tracking the indoor dew point temperature.

[0027] Pipes A1, B2, C3, D4, and E5 are made of PPR pipes, and the pipes are connected to each other by PPR hot-melt connection; or pipes A1, B2, C3, D4, and E5 are made of metal fittings and are connected by welding or threading.

[0028] The technical solution has been further optimized. The mixing pump station box 14 is made of cold-rolled steel plate or stainless steel. All components are installed in the mixing pump station box, and the gaps inside the box are filled with polyurethane foam for insulation or rubber insulation cotton is used to insulate the pipes.

[0029] refer to Figure 5 and Figure 6 During summer operation, valve 6 is closed, valve 7 is open, circulating water pump 9 is running, and electric two-way valve 8 adjusts its opening according to the signal from mixing controller 11, thereby controlling the amount of low-temperature cold water entering the mixing pump station to achieve precise temperature regulation. Low-temperature cold water enters from the main unit's water supply port 15, enters pipe A 1 through the electric two-way valve 8, mixes with the underfloor heating return water at the underfloor heating return port 18 to produce mixed water that flows to pipe D 4. Part of the mixed water passes through the circulating water pump 9, enters the underfloor heating and capillary network through pipe E 5 and the underfloor heating water supply port 17, and the other part of the mixed water returns to the main unit or buffer water tank through the main unit's return port 16. The opening degree of the electric two-way valve 8 is determined by the difference between the mixed water temperature measured by the temperature sensor 10 and the water temperature set by the mixing controller 11. The larger the difference, the larger the opening degree of the electric two-way valve 8; when the difference decreases, the opening degree of the electric two-way valve 8 also decreases. When the measured mixed water temperature is equal to or lower than the water temperature set by the mixing controller 11, the mixing controller 11 will close the electric two-way valve 8.

[0030] refer to Figure 7 and Figure 8 During winter operation, valve 6 is open, valve 7 is closed, electric two-way valve 8 is closed, and circulating water pump 9 is stopped. Hot water from the main unit or secondary system enters from the main unit's water supply port 15, flows out through valve 6 from the underfloor heating water supply port 17, and enters the underfloor heating or capillary network; underfloor heating return water enters from the underfloor heating return port 18 and returns to the main unit or buffer tank through the main unit's return port 16.

[0031] This invention provides a mixing pump station that only requires a small-sized electric two-way valve to regulate the inflow of low-temperature chilled water, resulting in an extremely low probability of valve jamming. The small-sized electric two-way valve is cost-effective, and the entire mixing pump station piping primarily uses PPR pipes, with PPR heat fusion connections between pipes, significantly reducing costs compared to existing solutions. The mixing pump station of this invention features a large main pipe diameter and high flow rate, allowing a single unit to meet the radiant cooling needs of a building area of ​​over 300 square meters. Existing mixing pump stations require two to three units to meet the radiant cooling needs of a building area of ​​300 square meters.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A water mixing pumping station, characterized by, include: Pipe A, pipe B, pipe C, pipe D, pipe E, valve one, valve two, electric two-way valve, circulating water pump, and mixing controller; pipe A can be located above or below pipe B; one end of pipe C is connected to pipe B, and the other end is connected to pipe A; the circulating water pump is connected to the ports of pipe E and pipe D via a union, with one end of pipe D connected to pipe A and the other end of pipe E connected to pipe B; valve one is installed on pipe B; valve two is installed on the side of pipe D near the circulating water pump, or valve two is installed on pipe E; the electric two-way valve is installed on pipe C, and the mixing controller is connected to the electric two-way valve via an electric two-way valve control line.

2. A water mixing pump station according to claim 1, characterized in that It also includes a temperature sensor, which is attached to pipe E or placed at any position in the pipeline between pipe D and the underfloor heating manifold, and the temperature sensor is connected to the mixing controller via a temperature sensor signal line.

3. A water mixing pump station according to claim 1, characterized in that The electric two-way valve adopts a 0-10V variable flow electric two-way valve, or an on / off type electric two-way valve.

4. A mixing pump station according to claim 1, characterized in that, Pipes A, B, C, D, and E are made of PPR pipes, and the pipes are connected to each other by PPR heat fusion connection. Alternatively, pipes A, B, C, D, and E can be made of metal fittings and connected by welding and / or threading.

5. A mixing pump station according to claim 1, characterized in that, The mixing pump station enclosure is made of cold-rolled steel plate or stainless steel.

6. A mixing pump station according to claim 1, characterized in that, During summer operation, valve one is closed and valve two is opened, the circulating water pump runs, and the electric two-way valve adjusts its opening according to the signal from the mixing controller, thereby controlling the amount of low-temperature cold water entering the water to achieve precise temperature regulation. Low-temperature cold water enters from the main unit's water supply port, enters pipe A through an electric two-way valve, mixes with the underfloor heating return water to produce mixed water that flows to pipe D. Part of the mixed water is pumped through the circulating water pump and enters the underfloor heating and capillary network through pipe E via the underfloor heating water supply port. The other part of the mixed water returns to the main unit or buffer water tank through the main unit's return water port. The opening degree of the electric two-way valve is determined by the difference between the mixing water temperature measured by the temperature sensor and the water temperature set by the mixing controller. The larger the difference, the larger the opening degree of the electric two-way valve. When the difference decreases, the opening degree of the electric two-way valve also decreases. When the measured mixing water temperature is equal to or lower than the water temperature set by the mixing controller, the mixing controller will close the electric two-way valve.

7. A mixing pump station according to claim 1, characterized in that, During winter operation, valve one is open, valve two is closed, the electric two-way valve is closed, and the circulating water pump is stopped. Hot water from the main unit enters through the main unit's water supply port, flows through valve one into the underfloor heating water supply port, and enters the underfloor heating or capillary network. Underfloor heating return water enters through the underfloor heating return port and returns to the main unit or buffer tank through the main unit's return port.

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