Flow control device for ultrapure water heater
By automatically adjusting the water flow rate through temperature sensing components and a motor system, the problem of uneven heating in ultrapure water heaters is solved, achieving more efficient heating control and automated operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-18
- Publication Date
- 2026-04-07
AI Technical Summary
Existing ultrapure water heaters suffer from uneven heating when the inlet and outlet flow rates are mismatched. They also cannot actively identify the outlet temperature to control the inlet flow rate, which reduces heating efficiency and practicality.
The system actively detects the water temperature inside the drain pipe using temperature sensing components. It determines whether the heating target has been reached through temperature sensors and controls the motor and helical gear system to change the water flow speed through signals, thereby achieving automated control.
It improves heating efficiency and the degree of automation of the device, ensures matching water flow rate, and enhances heating uniformity and practicality.
Smart Images

Figure CN224094634U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ultrapure water heaters, and more specifically, to a flow control device for ultrapure water heaters. Background Technology
[0002] Ultrapure water is water produced using distillation, deionization, reverse osmosis, or other appropriate supercritical fine technologies for the research and development of ultrapure materials. Patent publication number CN218033701U discloses an online PVDF ultrapure water heater, relating to the field of heater technology. It includes a heating shell and a control block. The control block is equipped with a first power supply component, a second power supply component, and a mounting block. An inlet pipe and a drain pipe are fixedly connected to both sides of the control block. This invention utilizes the mounting block and fixing components to seal the heating shell and control block. Ultrapure water is delivered to the interior of the heating shell via a spiral water delivery pipe, allowing it to be spirally delivered to the bottom of the heating shell. Heated by a spring heating wire and a ring heating wire, the ultrapure water is heated. Based on the principle of cold water rising and hot water falling, the hot water is discharged from the heating shell through the outlet pipe. Simultaneously, the ring heating wire keeps the discharged hot water warm, achieving a stable output of hot ultrapure water and avoiding uneven heating or substandard temperatures.
[0003] In existing technologies, however, in practical applications, the heating process of ultrapure water may be affected by the constant inlet and outlet rates, which require time for heating. Therefore, when the time and water flow rate are not matched, uneven heating of pure water will occur, failing to achieve the expected heating purpose. This results in certain limitations of existing pure water heaters, which cannot actively identify the temperature of the outlet to control the water flow rate at the inlet, thus reducing their practicality. Utility Model Content
[0004] 1. Technical problems to be solved
[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a flow control device for an ultrapure water heater. It can actively identify the water temperature inside the water pipe and determine whether it meets the standard to control the water flow rate at the inlet, thereby improving the efficiency of pure water heating. Furthermore, automatic control can further improve the overall automation level and enhance the overall practicality of the device.
[0006] 2. Technical Solution
[0007] To solve the above problems, the present invention adopts the following technical solution.
[0008] A flow control device for an ultrapure water heater includes a heating housing. A control block is fixedly installed at the top of the heating housing. An inlet pipe and a drain pipe are fixedly installed on the left and right sides of the control block, respectively. A connecting pipe is fixedly connected to the outer end of the inlet pipe. A temperature sensing component is fixedly installed on the outer side of the drain pipe. A mounting bracket is fixedly installed on the outer wall of the connecting pipe. A motor is fixedly installed inside the mounting bracket. A helical gear one is fixedly sleeved on the output shaft of the motor. A helical gear two meshes with the surface of the helical gear one. A screw is fixedly installed on one side of the helical gear two. A transmission frame is threaded onto the surface of the screw. A retaining ring is fixedly connected to the inner wall of the connecting pipe near the inlet pipe. A flow rate regulating component is movably installed on the outer side of the retaining ring on the inner wall of the connecting pipe.
[0009] Furthermore, the temperature sensing component includes a ring frame, with fins fixedly installed on both the left and right sides of the ring frame. Bolts are installed on the internal threads of the fins. A wire conduit is fixedly installed on the inner wall of the ring frame, and a temperature sensor is fixedly installed on the outer end of the wire conduit. The end thread of the bolt is installed inside the drain pipe.
[0010] Furthermore, the number of temperature sensors is four, and all four temperature sensors are distributed in the inner wall of the drain pipe through the polar axis of the drain pipe's center.
[0011] Furthermore, the transmission frame includes a mounting ring, a connecting block is fixedly mounted on the top end of the mounting ring, a transmission block is fixedly mounted on the top end of the connecting block, sealing plates are fixedly mounted on both the left and right sides of the connecting block, four support rods are fixedly mounted on the inner wall of the mounting ring, and sliding blocks are fixedly mounted on the inner ends of the four support rods.
[0012] Furthermore, a sealing groove is provided inside the upper part of the connecting pipe, the shape of which is adapted to the shape of the sealing plate, and the screw and the transmission block are threadedly connected to each other.
[0013] Furthermore, the flow rate variation component includes a guide plate, a right-angle rod is fixedly installed at the top of the guide plate, a fixing frame is rotatably installed at the outer end of the right-angle rod, and a sliding groove is formed on the top surface of the guide plate.
[0014] Furthermore, the shape of the sliding groove is adapted to the shape of the sliding block, and the outer side of the fixing frame is fixedly installed on the inner wall of the connecting pipe.
[0015] 3. Beneficial effects
[0016] Compared with existing technologies, the advantages of this utility model are:
[0017] (1) This solution utilizes a temperature sensing component to actively detect the temperature of the water discharged from the drain pipe, thereby determining whether the heating purpose has been achieved. Furthermore, the signal can be used to control the water flow rate of the connecting pipe, thereby changing the water flow rate and increasing the heating time to achieve the heating purpose.
[0018] (2) The controller in this scheme performs signal transmission control and enables the overall device to achieve automated processing, further improving the overall automation level and practicality of the device. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the temperature sensing component structure in this utility model;
[0021] Figure 3 This is a schematic diagram of the internal structure of the connecting pipe in this utility model;
[0022] Figure 4 This is a schematic diagram of the transmission frame structure in this utility model;
[0023] Figure 5 This is a schematic diagram of the flow rate variation component in this utility model.
[0024] Explanation of the labels in the diagram:
[0025] 1. Heating shell; 2. Control block; 3. Controller; 4. Inlet pipe; 5. Connecting pipe; 6. Drain pipe; 7. Temperature sensing component; 8. Transmission frame; 9. Flow rate adjustment component; 501. Mounting frame; 502. Motor; 503. Helical gear one; 504. Helical gear two; 505. Screw; 506. Sealing groove; 507. Retaining ring; 701. Ring frame; 702. Fin plate; 703. Bolt; 704. Wire conduit; 705. Temperature sensor; 801. Mounting ring; 802. Connecting block; 803. Transmission block; 804. Sealing plate; 805. Support rod; 806. Sliding block; 901. Guide plate; 902. Right angle rod; 903. Fixing frame; 904. Sliding groove. Detailed Implementation
[0026] 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 without creative effort are within the protection scope of the present utility model.
[0027] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0029] Example 1:
[0030] Please see Figure 1-5 A flow control device for an ultrapure water heater includes a heating shell 1. A control block 2 is fixedly installed at the top of the heating shell 1. An inlet pipe 4 and a drain pipe 6 are fixedly installed on the left and right sides of the control block 2, respectively. A connecting pipe 5 is fixedly connected to the outer end of the inlet pipe 4. A temperature sensing component 7 is fixedly installed on the outer side of the drain pipe 6. A mounting bracket 501 is fixedly installed on the outer wall of the connecting pipe 5. A motor 502 is fixedly installed inside the mounting bracket 501. A helical gear 1 503 is fixedly sleeved on the output shaft of the motor 502. A helical gear 2 504 meshes with the surface of the helical gear 1 503. A screw 505 is fixedly installed on one side of the helical gear 2 504. A transmission bracket 8 is threaded onto the surface of the screw 505. A retaining ring 507 is fixedly connected to the inner wall of the connecting pipe 5 near the inlet pipe 4. A flow rate regulating component 9 is movably installed on the outer side of the retaining ring 507 located on the inner wall of the connecting pipe 5.
[0031] It should be noted that the heating shell 1 and control block 2 in this application are the same components in the prior art, and their internal structures and functions are the same. They are existing mature technologies, so this application will not elaborate on them further.
[0032] The temperature sensing component 7 includes a ring frame 701, with fins 702 fixedly installed on both the left and right sides of the ring frame 701. Bolts 703 are threaded into the internal parts of the fins 702. A conduit 704 is fixedly installed on the inner wall of the ring frame 701. A temperature sensor 705 is fixedly installed at the outer end of the conduit 704. The end of the bolt 703 is threaded into the inside of the drain pipe 6. There are four temperature sensors 705, and the four temperature sensors 705 are distributed in the inner wall of the drain pipe 6 through the polar axis of the center of the drain pipe 6.
[0033] Specifically, the temperature sensor 705 is attached to the inner wall of the drain pipe 6 and arranged in a circular array of four polar axes to ensure that the measured temperature has a corresponding average, preventing individual errors from affecting the overall temperature perception and improving the accuracy of temperature sensing.
[0034] The transmission frame 8 includes a mounting ring 801, a connecting block 802 fixedly mounted on the top end of the mounting ring 801, a transmission block 803 fixedly mounted on the top end of the connecting block 802, sealing plates 804 fixedly mounted on both the left and right sides of the connecting block 802, four support rods 805 fixedly mounted on the inner wall of the mounting ring 801, and sliding blocks 806 fixedly mounted on the inner ends of the four support rods 805. A sealing groove 506 is formed inside the upper part of the connecting pipe 5, and the shape of the sealing groove 506 is... The screw 505 and the transmission block 803 are threadedly connected to each other and are adapted to the shape of the sealing plate 804. The flow rate variation component 9 includes a guide plate 901. A right angle rod 902 is fixedly installed at the top of the guide plate 901. A fixing frame 903 is rotatably installed at the outer end of the right angle rod 902. A sliding groove 904 is opened on the top surface of the guide plate 901. The shape of the sliding groove 904 is adapted to the shape of the sliding block 806. The outer side of the fixing frame 903 is fixedly installed on the inner wall of the connecting pipe 5.
[0035] Specifically, the sealing groove 506 and the sealing plate 804 are matched to ensure that the transmission frame 8 has a sealing effect when it moves inside the connecting pipe 5, preventing leakage and improving the overall flow safety. Secondly, the four guide plates 901 can change the ratio of the inlet area of the water inlet channel to the area of the water inlet pipe 4 by expanding the outer end, thereby changing the liquid flow rate, achieving more precise rate control, and achieving better heating effect.
[0036] The working principle of this utility model is as follows: When water flows from the inside outlet of the drain pipe 6, the temperature sensor 705 actively identifies the temperature. If the temperature does not meet the expected effect, it transmits a signal to the inside of the controller 3, controlling the mounting bracket 501 to drive the motor 502 to rotate. Then, the first helical gear 503 drives the second helical gear 504 to rotate, causing the screw 505 to drive the transmission block 803 to move. The support rod 805 then drives the sliding block 806 to move to one side. Finally, the sliding groove 904 drives the guide plate 901 to gradually compress, causing the guide plate 901 to gradually close, changing the area of the water inlet, reducing the water flow speed, and achieving the purpose of improving the pure water heating effect.
[0037] 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 flow control device for an ultrapure water heater, comprising a heating housing (1), characterized in that: A control block (2) is fixedly installed at the top of the heating shell (1). A water inlet pipe (4) and a drain pipe (6) are fixedly installed on the left and right sides of the control block (2), respectively. A connecting pipe (5) is fixedly connected to the outer end of the water inlet pipe (4). A temperature sensing component (7) is fixedly installed on the outer side of the drain pipe (6). A mounting bracket (501) is fixedly installed on the outer wall of the connecting pipe (5). A motor (502) is fixedly installed inside the mounting bracket (501). The motor (502) outputs... A helical gear one (503) is fixedly sleeved on the output shaft. A helical gear two (504) meshes with the surface of the helical gear one (503). A screw (505) is fixedly installed on one side of the helical gear two (504). A transmission frame (8) is threaded onto the surface of the screw (505). A retaining ring (507) is fixedly connected to the inner wall of the connecting pipe (5) on the side close to the water inlet pipe (4). A flow rate variation component (9) is movably installed on the outer side of the retaining ring (507) on the inner wall of the connecting pipe (5).
2. The flow control device for an ultrapure water heater according to claim 1, characterized in that: The temperature sensing component (7) includes a ring frame (701), with fins (702) fixedly installed on both the left and right sides of the ring frame (701). Bolts (703) are installed on the internal threads of the fins (702). A conduit (704) is fixedly installed on the inner wall of the ring frame (701). A temperature sensor (705) is fixedly installed on the outer end of the conduit (704). The end thread of the bolt (703) is installed inside the drain pipe (6).
3. The flow control device for an ultrapure water heater according to claim 2, characterized in that: The number of temperature sensors (705) is four, and the four temperature sensors (705) are distributed in the inner wall of the drain pipe (6) through the polar axis of the drain pipe (6).
4. The flow control device for an ultrapure water heater according to claim 1, characterized in that: The transmission frame (8) includes a mounting ring (801), a connecting block (802) is fixedly mounted on the top end of the mounting ring (801), a transmission block (803) is fixedly mounted on the top end of the connecting block (802), sealing plates (804) are fixedly mounted on both the left and right sides of the connecting block (802), and four support rods (805) are fixedly mounted on the inner wall of the mounting ring (801), with sliding blocks (806) fixedly mounted on the inner ends of the four support rods (805).
5. The flow control device for an ultrapure water heater according to claim 1, characterized in that: A sealing groove (506) is provided inside the upper part of the connecting pipe (5). The shape of the sealing groove (506) is adapted to the shape of the sealing plate (804). The screw (505) and the transmission block (803) are threadedly connected to each other.
6. The flow control device for an ultrapure water heater according to claim 1, characterized in that: The flow rate variation component (9) includes a guide plate (901), a right angle rod (902) is fixedly installed at the top of the guide plate (901), a fixing frame (903) is rotatably installed at the outer end of the right angle rod (902), and a sliding groove (904) is opened on the top surface of the guide plate (901).
7. The flow control device for an ultrapure water heater according to claim 6, characterized in that: The shape of the sliding groove (904) is adapted to the shape of the sliding block (806), and the outer side of the fixing bracket (903) is fixedly installed on the inner wall of the connecting pipe (5).
Citation Information
Patent Citations
PVDF ultrapure water on-line heater
CN218033701U