A constant pressure water supply device for HVAC

Abstract

This utility model discloses a constant pressure water supply device for HVAC systems, including a water supply tank. A drive motor is fixedly installed on the top of the water supply tank. The output shaft of the drive motor passes through and extends into the interior of the water supply tank. A synchronization plate is fixedly connected to the output shaft of the drive motor. An arc-shaped scraper is slidably connected to the bottom of the synchronization plate. A magnetic plate is fixedly connected to the right side of the arc-shaped scraper. An electromagnetic base is fixedly installed at the bottom of the synchronization plate. The electromagnetic base is located to the right of the magnetic plate and is magnetically connected to the magnetic plate. A water inlet pipe communicating with the interior of the water supply tank is fixedly connected to the top of the water supply tank. This utility model, by setting a constant temperature pipe and an internal temperature sensor, can timely monitor the water temperature and heat the water to the required supply temperature, achieving constant temperature water supply. Furthermore, the arc-shaped scraper, which is in contact with the water supply tank, scrapes away scale and impurities adhering to the inside of the water supply tank, thereby preventing scale from affecting the water supply quality and the operation of the HVAC system.

Description

Technical Field

[0001] This utility model relates to the field of water supply equipment technology, specifically to a constant pressure water supply equipment for HVAC systems. Background Technology

[0002] Variable frequency water supply equipment is a complete set of water supply equipment that is directly connected to the municipal water supply network without affecting it. Based on the ZBH variable frequency constant pressure system, this equipment combines the pressure of the municipal water supply network with the pressure of the booster pump, making domestic water supply more energy-efficient and environmentally friendly. It is an ideal replacement for traditional secondary water supply systems. The equipment consists of a variable frequency control cabinet, a negative pressure elimination device, an automated control system and a remote monitoring system, a water pump unit, a pressure stabilizer, a negative pressure eliminator, a pressure sensor, valves, instruments, and piping systems. Water supply equipment is required for water supply during the operation of HVAC systems.

[0003] Patent application number CN2020232728070, entitled "Variable Frequency Water Supply Device for HVAC Systems," includes a control box, a water supply tank, and a water injection pipe. The water injection pipe is connected through the middle of the upper part of the water supply tank, and a water pump is fixedly installed at the upper part of the outlet tank. This invention overcomes the shortcomings of existing technologies by using a pressure sensor inside the control box to sense the pressure in the water pipe. When the pressure inside the water pipe reaches a certain threshold, the data receiver board transmits the data to the display screen on the surface of the control box. By rotating the lever, the pressure relief valve releases the pressure inside the water supply tank, effectively reducing the pressure during water supply. Furthermore, the inclusion of a pressure relief pipe further reduces the pressure generated by water vapor in the water pipe, preventing pipe rupture due to excessive water pressure or high water vapor levels during water supply, thus improving practical application.

[0004] This device achieves constant temperature by heating the water flow with a heater. However, the device has a long response time to monitor the water flow temperature and the water flow rate is relatively fast, resulting in poor temperature control. In addition, scale and impurities will form on the inner wall of the water supply tank after long-term use. If not treated in time, it will affect the water supply quality and thus affect the use of HVAC. Therefore, professionals in this field have provided a constant pressure water supply device for HVAC to solve the above-mentioned problems. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide a constant pressure water supply device for HVAC, which can achieve constant temperature water supply and remove scale and impurities by using an arc-shaped scraper, thereby avoiding scale from affecting the water supply quality and the operation of HVAC.

[0006] To achieve the above objectives, the present invention adopts the following technical solution.

[0007] A constant pressure water supply device for HVAC systems includes a water supply tank. A drive motor is fixedly installed on the top of the water supply tank. The output shaft of the drive motor passes through and extends into the interior of the water supply tank. A synchronization plate is fixedly connected to the output shaft of the drive motor. An arc-shaped scraper is slidably connected to the bottom of the synchronization plate. A magnetic plate is fixedly connected to the right side of the arc-shaped scraper. An electromagnetic base is fixedly installed at the bottom of the synchronization plate, located to the right of the magnetic plate and magnetically connected to it. A water inlet pipe communicating with the interior of the water supply tank is fixedly connected to the top of the water supply tank. A pressure relief valve is fixedly installed at the bottom of the water supply tank. An outlet tank is located on the right side of the water supply tank. A liquid pump connected to the inside of the water supply tank is fixedly installed on the left side. A delivery pipe is fixedly connected to the left end of the liquid pump. A thermostatic tube is installed on the side of the water supply tank opposite to the water outlet tank. A heat-conducting tube is fixedly connected to the inner wall of the thermostatic tube. The right end of the heat-conducting tube is connected to the delivery pipe. A water outlet pipe connected to the inside of the water supply tank is fixedly connected to the left side of the heat-conducting tube and is connected to the heat-conducting tube. An electric heater is installed on the inner wall of the thermostatic tube. A temperature sensor is fixedly installed on the inner wall of the heat-conducting tube. A microcontroller is fixedly installed on the right side of the water supply tank. The temperature sensor, pressure relief valve, and electric heater are all connected to the microcontroller.

[0008] As a further description of the above technical solution: the bottom of the synchronization plate is provided with a guide groove, and a guide strip is slidably connected inside the guide groove. The guide strip is fixedly connected to the top of the arc-shaped scraper.

[0009] As a further description of the above technical solution: a prompter is fixedly installed on the left side of the water supply tank, and the prompter is connected to the microcontroller signal.

[0010] As a further description of the above technical solution: both the water outlet pipe and the delivery pipe are fixedly connected with sealing rings, and the sealing rings are in contact with the thermostatic pipe.

[0011] As a further description of the above technical solution: a pressure gauge is installed on the right side of the water supply tank, and the left end of the pressure gauge is located inside the water supply tank.

[0012] As a further description of the above technical solution: the outer walls of both the water outlet pipe and the delivery pipe are coated with a heat-insulating coating.

[0013] Compared with existing technologies, the advantages of this utility model are:

[0014] In this invention, by setting a constant temperature tube and an internal temperature sensor, the water temperature can be monitored in a timely manner and heated to the required water temperature to achieve constant temperature water supply. Furthermore, an arc-shaped scraper attached to the water supply tank can remove scale and impurities adhering to the inside of the water supply tank, thereby preventing scale from affecting the water supply quality and the operation of HVAC. Attached Figure Description

[0015] Figure 1 This is a front view cross-sectional structural diagram of the present invention;

[0016] Figure 2 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0017] Figure 3 This is a schematic diagram of the internal three-dimensional structure of the thermostatic tube of this utility model;

[0018] Figure 4 This is a schematic diagram illustrating the principle of this utility model.

[0019] Explanation of the labels in the diagram:

[0020] 1. Water supply tank; 2. Drive motor; 3. Pressure gauge; 4. Synchronization plate; 5. Arc-shaped scraper; 6. Magnetic plate; 7. Electromagnetic base; 8. Inlet pipe; 9. Pressure relief valve; 10. Outlet tank; 11. Liquid pump; 12. Delivery pipe; 13. Thermostatic pipe; 14. Heat conduction pipe; 15. Outlet pipe; 16. Electric heater; 17. Temperature sensor; 18. Microcontroller; 19. Guide groove; 20. Guide strip; 21. Indicator; 22. Sealing ring. Detailed Implementation

[0021] 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;

[0022] Please see Figures 1-4In this utility model, a constant pressure water supply device for HVAC includes a water supply tank 1. A drive motor 2 is fixedly installed on the top of the water supply tank 1. The output shaft of the drive motor 2 passes through and extends into the interior of the water supply tank 1. A synchronization plate 4 is fixedly connected to the output shaft of the drive motor 2. An arc-shaped scraper 5 is slidably connected to the bottom of the synchronization plate 4. A magnetic plate 6 is fixedly connected to the right side of the arc-shaped scraper 5. An electromagnetic base 7 is fixedly installed at the bottom of the synchronization plate 4. The electromagnetic base 7 is located to the right of the magnetic plate 6 and is magnetically connected to the magnetic plate 6. A water inlet pipe 8 communicating with the interior of the water supply tank 1 is fixedly connected to the top of the water supply tank 1. A pressure relief valve 9 is fixedly installed at the bottom of the water supply tank 1. A water outlet tank 10 is provided on the right side of the water supply tank 1. A liquid pump 11 communicating with the interior of the water outlet tank 10 is fixedly installed on the left side of the water outlet tank 10. The left end of the liquid pump 11 is fixedly connected to... A conveying pipe 12 is connected to the water supply tank 1. A thermostatic pipe 13 is installed on the side opposite to the water outlet tank 10. A heat-conducting pipe 14 is fixedly connected to the inner wall of the thermostatic pipe 13. The right end of the heat-conducting pipe 14 is connected to the conveying pipe 12. A water outlet pipe 15 is fixedly connected to the right side of the water supply tank 1 and is connected to the inside of the water outlet pipe 15. The water outlet pipe 15 is fixedly connected to the left side of the heat-conducting pipe 14 and is connected to the heat-conducting pipe 14. An electric heater 16 is installed on the inner wall of the thermostatic pipe 13. A temperature sensor 17 is fixedly installed on the inner wall of the heat-conducting pipe 14. A microcontroller 18 is fixedly installed on the right side of the water supply tank 1. The temperature sensor 17, the pressure relief valve 9, and the electric heater 16 are all connected to the microcontroller 18. The outer walls of the water outlet pipe 15 and the conveying pipe 12 are coated with a heat-insulating coating. A control box is installed on the right side of the water supply tank 1, and the microcontroller 18 is integrated inside the control box.

[0023] When supplying water to the HVAC system, water flows into the water supply tank 1 through the inlet pipe 8 at the top. The pressure relief valve 9, in conjunction with a sensor, maintains constant pressure inside the water supply tank 1 to prevent excessive pressure from causing pipe cracking and affecting water supply. The water flows into the heat-conducting pipe 14 inside the thermostatic pipe 13 through the outlet pipe 15. The temperature sensor 17 monitors the temperature of the incoming water and transmits it to the microcontroller 18. The microcontroller 18 compares the temperature difference with the set water flow temperature, compares the values, and controls the electric heater 16 to work and raise the temperature to the set temperature. The electric heater 16 exchanges heat with the heat-conducting pipe 14. After the water flows through the heat-conducting pipe 14, its temperature rises and it is discharged into the delivery pipe 12. Under the suction of the pump 11, the water flows into the outlet tank 10 to complete the water supply. When the water tank 1 has been used for a long time, the user controls the drive motor 2 to work. At this time, the electromagnetic base 7 generates the same magnetic field as the magnetic plate 6. The magnetic plate 6 pushes the arc-shaped scraper 5 away from the electromagnetic base 7, so that the arc-shaped scraper 5 is always in contact with the inner wall of the water tank 1. The drive motor 2 drives the synchronous plate 4 to rotate. The arc-shaped scraper 5 at the bottom of the synchronous plate 4 scrapes away the scale and impurities on the inner wall of the water tank 1 and discharges them through the drain pipe that can be opened at the bottom of the water tank 1. After the scraping is completed, the user changes the current direction of the electromagnetic base 7, so that the magnetic plate 6 is moved towards the electromagnetic base 7 under the action of the magnetic field, thereby moving the arc-shaped scraper 5 to the center position of the water tank 1. The user can then rinse the arc-shaped scraper 5 with water to prevent impurities from adhering to the arc-shaped scraper 5.

[0024] In this invention, by setting a constant temperature tube 13 and an internal temperature sensor 17, the water temperature can be monitored in a timely manner and heated to the required water temperature to achieve constant temperature water supply. Furthermore, the arc-shaped scraper 5, which is in contact with the water supply tank 1, scrapes away the scale and impurities attached to the inside of the water supply tank 1, thereby preventing scale from affecting the water supply quality and the operation of the HVAC system.

[0025] Please see Figure 1 and 2 The bottom of the synchronous plate 4 is provided with a guide groove 19, and a guide strip 20 is slidably connected inside the guide groove 19. The guide strip 20 is fixedly connected to the top of the arc-shaped scraper 5.

[0026] In this invention, the combined use of the guide groove 19 and the guide strip 20 can restrict the arc-shaped scraper 5, so that the arc-shaped scraper 5 is always located at the bottom of the synchronous plate 4 and moves horizontally.

[0027] Please see Figure 1 and 4 Among them, a prompter 21 is fixedly installed on the left side of the water supply tank 1, and the prompter 21 is connected to the microcontroller 18 via signal.

[0028] In this utility model, when the water pressure and water temperature inside the water supply tank 1 exceed the set values, the microcontroller 18 will control the prompter 21 to work, and the prompter 21 will generate a prompt sound to remind the user.

[0029] Please see Figure 3 Among them, sealing rings 22 are fixedly connected to both the water outlet pipe 15 and the delivery pipe 12, and the sealing rings 22 are in contact with the thermostatic pipe 13.

[0030] In this invention, the sealing ring 22 can improve the sealing effect of the heat pipe 14 and prevent water or heat from overflowing.

[0031] Please see Figure 1 Among them, a pressure gauge 3 is installed on the right side of the water supply tank 1, and the left end of the pressure gauge 3 is located inside the water supply tank 1.

[0032] In this utility model, the pressure gauge 3 can monitor the internal pressure of the water supply tank 1, and the user can check the value of the pressure gauge 3 to understand the internal pressure of the water supply tank 1.

[0033] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A constant pressure water supply device for heating, ventilation, air conditioning, comprising a water supply tank (1), characterized in that: A drive motor (2) is fixedly installed on the top of the water supply tank (1). The output shaft of the drive motor (2) passes through and extends into the interior of the water supply tank (1). A synchronization plate (4) is fixedly connected to the output shaft of the drive motor (2). An arc-shaped scraper (5) is slidably connected to the bottom of the synchronization plate (4). A magnetic plate (6) is fixedly connected to the right side of the arc-shaped scraper (5). An electromagnetic base (7) is fixedly installed at the bottom of the synchronization plate (4). The electromagnetic base (7) is located on the right side of the magnetic plate (6) and is magnetically connected to the magnetic plate (6). An inlet pipe (8) communicating with the interior of the water supply tank (1) is fixedly connected to the top of the water supply tank (1). A pressure relief valve (9) is fixedly installed at the bottom of the water supply tank (1). An outlet tank (10) is provided on the right side of the water supply tank (1). A liquid pump (11) communicating with the interior of the outlet tank (10) is fixedly installed on the left side of the outlet tank (10). The left end of the pump (11) is fixedly connected to a delivery pipe (12). A thermostatic pipe (13) is provided on the side of the water supply tank (1) opposite to the outlet tank (10). A heat-conducting pipe (14) is fixedly connected to the inner wall of the thermostatic pipe (13). The right end of the heat-conducting pipe (14) is connected to the delivery pipe (12). An outlet pipe (15) is fixedly connected to the right side of the water supply tank (1) and communicates with its interior. The outlet pipe (15) is fixedly connected to the left side of the heat-conducting pipe (14) and communicates with the heat-conducting pipe (14). An electric heater (16) is installed on the inner wall of the thermostatic pipe (13). A temperature sensor (17) is fixedly installed on the inner wall of the heat-conducting pipe (14). A microcontroller (18) is fixedly installed on the right side of the water supply tank (1). The temperature sensor (17), the pressure relief valve (9), and the electric heater (16) are all connected to the microcontroller (18) via signal.

2. The constant pressure water supply device for heating, ventilation, air conditioning according to claim 1, characterized in that: The bottom of the synchronization plate (4) is provided with a guide groove (19), and a guide strip (20) is slidably connected inside the guide groove (19). The guide strip (20) is fixedly connected to the top of the arc-shaped scraper (5).

3. The constant pressure water supply device for heating, ventilation, air conditioning and refrigeration according to claim 1, characterized in that: A prompter (21) is fixedly installed on the left side of the water supply tank (1), and the prompter (21) is connected to the microcontroller (18) via signal.

4. The constant pressure water supply device for heating, ventilation, air conditioning and refrigeration according to claim 1, characterized in that: Both the water outlet pipe (15) and the delivery pipe (12) are fixedly connected with sealing rings (22), and the sealing rings (22) are in contact with the thermostatic pipe (13).

5. The constant pressure water supply device for heating, ventilation, air conditioning and refrigeration according to claim 1, characterized in that: A pressure gauge (3) is installed on the right side of the water supply tank (1), and the left end of the pressure gauge (3) is located inside the water supply tank (1).

6. The constant pressure water supply device for heating, ventilation, air conditioning and refrigeration according to claim 1, characterized in that: The outer walls of both the water outlet pipe (15) and the conveying pipe (12) are coated with a heat-insulating coating.

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