Intelligent high-low area direct supply unit
Through the combination of a variable frequency electric circulating booster pump and an electric control valve, the return water pressure difference between the two networks is adjusted, which solves the problems of insufficient heat and poor circulation in the direct supply unit during large flow and small temperature difference, and achieves efficient heating and automated water supply.
Patent Information
- Application Number
- CN202422537504.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-10-21
AI Technical Summary
When the existing direct supply units require large flow and small temperature difference, the heat at the user end is insufficient and the room temperature does not meet the standard. The small pressure difference between the supply and return water of the first network causes the first heating water to enter the second supply, and the frequency of the circulation pump is too low, resulting in the circulation of the second network is not smooth.
The variable frequency electric circulating booster pump is used to extract hot water through the water suction pipe. After the boost is pressurized, the first network water supply valve and the second network water supply valve are connected through the bypass valve to adjust the return water pressure difference of the second network, and efficient heating is achieved through the electric control valve, combining the remote electrical control module and the water pressure and temperature detection module for automatic monitoring and pressurized water supply.
It realizes efficient heating under large flow and small temperature difference, ensures that the room temperature meets the standards, solves the problems of insufficient heat and unsmooth circulation, and realizes automatic pressure differential balance and pressurized water supply of the water supply pipeline network.
Smart Images
Figure CN223137969U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of HVAC water supply, and particularly relates to an intelligent high-low zone direct supply unit. Background Technique
[0002] As an important part of the heating system, the direct supply unit of HVAC water supply mainly adopts the direct supply method, that is, directly delivering the hot water generated by the heat source to the user end to achieve the purpose of heating or air-conditioning refrigeration, and automatically adjusting the water supply volume according to the needs of the building space to ensure the heating or refrigeration effect.
[0003] Although the direct supply unit has many technical advantages, it still faces some challenges in practical applications. Especially when there is a large demand for low-temperature difference and large water flow, the problem of insufficient heat at the user end and unqualified room temperature is particularly prominent. At the same time, problems such as small pressure difference between the supply and return of the primary network and too low frequency of the circulation pump also affect the normal operation of the system. When there is a phenomenon of large water flow and small temperature difference in the heating system, that is, the difference between the supply water temperature and the return water temperature is small but the water flow is large, it will cause unstable indoor temperature and affect the heating effect. This situation is usually caused by improper setting of the supply water temperature, water quality problems or unreasonable pipeline design. A small pressure difference between the supply and return of the primary network will cause the hot water in the primary supply to fail to enter the secondary supply system smoothly, affecting the heating effect. This is caused by reasons such as improper pipeline system design, failure of the makeup water system or improper selection of the water pump.
[0004] Therefore, aiming at the problems that the existing direct supply unit cannot meet the large demand for low-temperature difference and large water flow, resulting in insufficient heat at the user end and unqualified room temperature. The small pressure difference between the supply and return of the primary network causes the hot water in the primary supply to be unable to enter the secondary supply, and the frequency of the circulation pump is too low, making the circulation of the secondary network not smooth, an intelligent high-low zone direct supply unit can be designed. Content of the Utility Model
[0005] In order to overcome the problems that the existing direct supply unit cannot meet the large demand for low-temperature difference and large water flow, resulting in insufficient heat at the user end and unqualified room temperature. The small pressure difference between the supply and return of the primary network causes the hot water in the primary supply to be unable to enter the secondary supply, and the frequency of the circulation pump is too low, making the circulation of the secondary network not smooth.
[0006] The technical solution of the utility model is: an intelligent high-low zone direct supply unit, which includes a pressure distribution water supply pump assembly, and also includes an electric control valve, a primary network water supply valve, a secondary network water supply valve, and a bypass valve; an electric control valve is arranged on one side of the pressure distribution water supply pump assembly; one end of the electric control valve is provided with a primary network water supply valve; a secondary network water supply valve is arranged above the primary network water supply valve, and the input end of the secondary network water supply valve is connected to the output end of the electric control valve through a pipeline; the output end of the primary network water supply valve is connected to the input end of the electric control valve; the pressure distribution water supply pump assembly includes a variable frequency electric circulating booster pump, a drainage pipeline, a water suction pipeline, and a flow control valve.
[0007] Preferably, a variable-frequency electric circulating booster pump relies on a water suction pipe to directly extract the first supply of hot water at the output end of the electric control valve, and then discharges the pressurized hot water into the input end of the secondary network water supply valve through a drain pipe. After increasing the temperature of the secondary supply of hot water, the bypass valve is opened to connect the output end of the primary network water supply valve and the input end of the secondary network water supply valve, thereby adjusting the pressure difference between the secondary network return water and the secondary network water supply. Finally, the electric control valve allows the first supply of hot water to enter the secondary network water supply valve to achieve an efficient heating effect, solving the problem that the existing direct supply unit cannot meet the large flow and small temperature difference requirements, resulting in insufficient heat at the user end and unqualified room temperature. The pressure difference between the primary network supply and return water is small, resulting in the inability of the first supply of hot water to enter the secondary supply, and the frequency of the circulating pump is too low, making the secondary network circulation not smooth.
[0008] Preferably, a water suction pipe is provided at the input end of the variable-frequency electric circulating booster pump, and the water suction pipe is connected to the input end of the variable-frequency electric circulating booster pump.
[0009] Preferably, the water suction pipe is connected to the output end pipe of the electric control valve; both the electric control valve and the variable-frequency electric circulating booster pump are internally equipped with a remote electric control module and a water pressure and water temperature detection module, so as to realize the real-time monitoring function of the water temperature and water pressure of the hot water, and thereby realize the automatic pressure difference balance pressurized water supply function of the water supply network.
[0010] Preferably, a flow control valve is provided in the pipe between the water suction pipe and the output end of the electric control valve, and the flow control valve is connected to the water suction pipe and the output end of the electric control valve by pipe flanges.
[0011] Preferably, a drain pipe is provided at the output end of the variable-frequency electric circulating booster pump, and the drain pipe is connected to the output end pipe of the variable-frequency electric circulating booster pump; a variable-frequency electric circulating booster pump relies on a water suction pipe to directly extract the first supply of hot water at the output end of the electric control valve, and then discharges the pressurized hot water into the input end of the secondary network water supply valve through the drain pipe. After increasing the temperature of the secondary supply of hot water, the bypass valve is opened to connect the output end of the primary network water supply valve and the input end of the secondary network water supply valve, thereby adjusting the pressure difference between the secondary network return water and the secondary network water supply. Finally, the electric control valve allows the first supply of hot water to enter the secondary network water supply valve to achieve an efficient heating effect.
[0012] Preferably, the drain pipe is connected to the input end of the secondary network water supply valve and the output end of the electric control valve, and a manual adjustment valve is provided in the output end pipe of the electric control valve. This manual adjustment valve does not control the connection between the secondary network water supply valve and the drain pipe, but only controls the opening and closing of the pipe between the input end of the secondary network water supply valve and the output end of the electric control valve.
[0013] Preferably, a bypass valve is arranged between the primary network water supply valve and the secondary network water supply valve, and both ends of the bypass valve are respectively connected to the output pipeline of the primary network water supply valve and the input pipeline of the secondary network water supply valve.
[0014] Advantages of the present utility model:
[0015] The existing direct supply units cannot meet the demand for large flow and small temperature difference, resulting in insufficient heat at the user end and unqualified room temperature. The pressure difference between the primary network supply and return water is small, resulting in the inability of the primary supply hot water to enter the secondary supply, and the frequency of the circulation pump is too low, making the secondary network circulation not smooth; by relying on the suction pipeline, the variable frequency electric circulation booster pump directly extracts the primary supply hot water at the output end of the electric control valve, and then discharges the pressurized hot water from the drainage pipeline into the input end of the secondary network water supply valve. After increasing the temperature of the secondary supply hot water, the bypass valve is opened to connect the output end of the primary network water supply valve and the input end of the secondary network water supply valve, thereby adjusting the pressure difference between the secondary network return water and the secondary network water supply, and finally enabling the primary supply hot water to enter the secondary network water supply valve through the electric control valve to achieve an efficient heating effect; it solves the problem that the existing direct supply units cannot meet the demand for large flow and small temperature difference, resulting in insufficient heat at the user end and unqualified room temperature. The pressure difference between the primary network supply and return water is small, resulting in the inability of the primary supply hot water to enter the secondary supply, and the frequency of the circulation pump is too low, making the secondary network circulation not smooth;
[0016] Through the setting of the electric control valve and the variable frequency electric circulation booster pump, both the electric control valve and the variable frequency electric circulation booster pump are internally equipped with a remote electric control module and a water pressure and water temperature detection module, so as to realize the real-time monitoring function of the water temperature and water pressure of the hot water, and thereby realize the automatic pressure difference balance pressurized water supply function for the water supply network. Description of the drawings
[0017] Figure 1 Shown is the overall structure schematic diagram of an intelligent high and low zone direct supply unit of the present utility model;
[0018] Figure 2 Shown is the structure schematic diagram of the pressure distribution water supply pump assembly of an intelligent high and low zone direct supply unit of the present utility model.
[0019] The reference signs in the drawings are: 1, pressure distribution water supply pump assembly; 2, electric control valve; 3, primary network water supply valve; 4, secondary network water supply valve; 5, bypass valve; 101, variable frequency electric circulation booster pump; 102, drainage pipeline; 103, suction pipeline; 104, flow control valve. Detailed implementation manners
[0020] The present utility model will be further described below in conjunction with the drawings and embodiments.
[0021] Please refer to Figure 1-2, embodiments provided by the present utility model: an intelligent direct supply unit for high and low zones, comprising a pressure distribution water supply pump assembly 1, and further comprising an electric control valve 2, a primary network water supply valve 3, a secondary network water supply valve 4, and a bypass valve 5; an electric control valve 2 is arranged on one side of the pressure distribution water supply pump assembly 1; a primary network water supply valve 3 is arranged at one end of the electric control valve 2; a secondary network water supply valve 4 is arranged above the primary network water supply valve 3, and the input end of the secondary network water supply valve 4 is connected to the output end of the electric control valve 2 through a pipeline; the output end of the primary network water supply valve 3 is connected to the input end of the electric control valve 2; the pressure distribution water supply pump assembly 1 comprises a variable-frequency electric circulating booster pump 101, a drain pipeline 102, a suction pipeline 103, and a flow control valve 104.
[0022] Please refer to Figure 1-2 , in this embodiment, a suction pipeline 103 is arranged at the input end of the variable-frequency electric circulating booster pump 101, and the suction pipeline 103 is connected to the input end of the variable-frequency electric circulating booster pump 101; the suction pipeline 103 is connected to the output end of the electric control valve 2 through a pipeline; a flow control valve 104 is arranged in the pipeline between the suction pipeline 103 and the output end of the electric control valve 2, and the flow control valve 104 is connected to the suction pipeline 103 and the output end of the electric control valve 2 through pipeline flanges.
[0023] Please refer to Figure 1-2 , in this embodiment, a drain pipeline 102 is arranged at the output end of the variable-frequency electric circulating booster pump 101, and the drain pipeline 102 is connected to the output end of the variable-frequency electric circulating booster pump 101 through a pipeline; the drain pipeline 102 is connected to the input end of the secondary network water supply valve 4 and the output end of the electric control valve 2 through a pipeline, and a manual regulating valve is arranged in the pipeline of the output end of the electric control valve 2, and this manual regulating valve does not control the connection of the pipeline between the secondary network water supply valve 4 and the drain pipeline 102, but only controls the opening and closing of the pipeline between the input end of the secondary network water supply valve 4 and the output end of the electric control valve 2; a bypass valve 5 is arranged between the primary network water supply valve 3 and the secondary network water supply valve 4, and both ends of the bypass valve 5 are respectively connected to the output pipeline of the primary network water supply valve 3 and the input pipeline of the secondary network water supply valve 4 through pipelines.
[0024] When working, the variable-frequency electric circulating booster pump 101 directly extracts a supply of hot water at the output end of the electric control valve 2 through the suction pipeline 103, and then discharges the pressurized hot water into the input end of the secondary network water supply valve 4 from the drainage pipeline 102. After increasing the temperature of the secondary supply hot water, the bypass valve 5 is opened to connect the output end of the primary network water supply valve 3 and the input end of the secondary network water supply valve 4, thereby realizing the adjustment of the pressure difference between the secondary network return water and the secondary network water supply. Finally, the electric control valve 2 is used to make the supply hot water enter the secondary network water supply valve 4 to achieve an efficient heating effect; it solves the problem that the existing direct supply units cannot meet the requirements of large flow and small temperature difference, resulting in insufficient heat at the user end and unqualified room temperature. The pressure difference between the primary network supply and return water is small, resulting in the inability of the supply hot water to enter the secondary supply, and the frequency of the circulating pump is too low, making the secondary network circulation not smooth;
[0025] Next, both the electric control valve 2 and the variable-frequency electric circulating booster pump 101 are internally equipped with a remote electric control module and a water pressure and water temperature detection module, so as to realize the real-time monitoring function of the water temperature and water pressure of the hot water, and thereby realize the automatic pressure difference balance pressurized water supply function for the water supply network.
[0026] Through the above steps, the variable-frequency electric circulating booster pump 101 directly extracts a supply of hot water at the output end of the electric control valve 2 through the suction pipeline 103, and then discharges the pressurized hot water into the input end of the secondary network water supply valve 4 from the drainage pipeline 102. After increasing the temperature of the secondary supply hot water, the bypass valve 5 is opened to connect the output end of the primary network water supply valve 3 and the input end of the secondary network water supply valve 4, thereby realizing the adjustment of the pressure difference between the secondary network return water and the secondary network water supply. Finally, the electric control valve 2 is used to make the supply hot water enter the secondary network water supply valve 4 to achieve an efficient heating effect, avoiding the problem that the existing direct supply units cannot meet the requirements of large flow and small temperature difference, resulting in insufficient heat at the user end and unqualified room temperature. The pressure difference between the primary network supply and return water is small, resulting in the inability of the supply hot water to enter the secondary supply, and the frequency of the circulating pump is too low, making the secondary network circulation not smooth.
[0027] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the purpose of the present invention.
Claims
1. An intelligent direct supply unit for high and low zones, comprising a pressure distribution water supply pump assembly (1), characterized in that: It also includes an electric control valve (2), a primary network water supply valve (3), a secondary network water supply valve (4), and a bypass valve (5); an electric control valve (2) is arranged on one side of the pressure distribution water supply pump assembly (1); one end of the electric control valve (2) is provided with a primary network water supply valve (3); a secondary network water supply valve (4) is arranged above the primary network water supply valve (3), and the input end of the secondary network water supply valve (4) is connected to the output end of the electric control valve (2) through a pipeline; the output end of the primary network water supply valve (3) is connected to the input end of the electric control valve (2); the pressure distribution water supply pump assembly (1) includes a variable-frequency electric circulating booster pump (101), a drain pipeline (102), a suction pipeline (103), and a flow control valve (104).
2. The intelligent high-low zone direct supply unit according to claim 1, characterized in that: The input end of the variable-frequency electric circulating booster pump (101) is provided with a suction pipeline (103), and the suction pipeline (103) is connected to the input end of the variable-frequency electric circulating booster pump (101).
3. The intelligent direct supply unit for high and low zones according to claim 1, wherein: The suction pipeline (103) is connected to the output end of the electric control valve (2) through a pipeline.
4. The intelligent high-low zone direct supply unit according to claim 2, wherein: A flow control valve (104) is arranged in the pipeline between the suction pipeline (103) and the output end of the electric control valve (2), and the flow control valve (104) is connected to the suction pipeline (103) and the output end of the electric control valve (2) through pipeline flanges.
5. An intelligent direct supply unit for high and low zones according to claim 1, characterized in that: The output end of the variable-frequency electric circulating booster pump (101) is provided with a drain pipeline (102), and the drain pipeline (102) is connected to the output end of the variable-frequency electric circulating booster pump (101) through a pipeline.
6. The intelligent high-low zone direct supply unit according to claim 5, characterized in that: The drain pipeline (102) is connected to the input end of the secondary network water supply valve (4) and the output end of the electric control valve (2) through a pipeline, and a manual regulating valve is arranged in the pipeline of the output end of the electric control valve (2). This manual regulating valve does not control the connection between the secondary network water supply valve (4) and the drain pipeline (102), but only controls the opening and closing of the pipeline between the input end of the secondary network water supply valve (4) and the output end of the electric control valve (2).
7. An intelligent direct supply unit for high and low zones according to claim 1, characterized in that: A bypass valve (5) is arranged between the primary network water supply valve (3) and the secondary network water supply valve (4), and both ends of the bypass valve (5) are respectively connected to the output pipeline of the primary network water supply valve (3) and the input pipeline of the secondary network water supply valve (4) through pipelines.