Constant temperature water outlet device and control method of towel heating equipment

Abstract

The present application provides a kind of towel heating equipment constant-temperature water outlet device and control method, belong to constant-temperature water outlet device technical field, including water storage cavity, heating device and plastic shell, water storage cavity and heating device are all arranged in plastic shell, heating device is located at the bottom of water storage cavity;Water storage cavity is connected with the water inlet end of heating device by three-way pipeline and is communicated;The water outlet end of heating device is communicated with water outlet branch and circulation branch;First check valve is installed in water outlet branch, and the end is water outlet end;Second check valve is installed in circulation branch, and the end is communicated with heating device and water storage cavity by three-way pipeline;The device relies on three-way pipeline shunt communication, and is opened and closed with two groups of check valves, switches circulation and water outlet two parallel flow channels, realizes water preheating and constant-temperature water outlet operation.Closed loop circulation flow channel can preheat pipeline, eliminate residual cold water, stabilize water temperature, avoid water temperature uneven problem, guarantee towel heating quality.

Description

Technical Field

[0001] This invention belongs to the technical field of constant temperature water outlet devices, and in particular, a constant temperature water outlet device and control method for a towel heating equipment. Background Technology

[0002] The constant temperature water outlet device for towel heating equipment is a supporting device used to provide hot water at a constant temperature for towel heating equipment, assisting towels in absorbing water and heating. It is suitable for homes, hotel rooms, beauty salons and other scenarios that require towel heating.

[0003] Existing towel heating equipment typically delivers water directly from the pipes to the outlet after startup, resulting in a period of cold water that fails to reach the preset temperature immediately, affecting the towel heating effect and user experience. Furthermore, uneven water temperature distribution within the pipes can lead to large fluctuations in outlet temperature, low heating efficiency, and long waiting times. Summary of the Invention

[0004] To address the aforementioned shortcomings, this invention provides a constant temperature water outlet device and control method for a towel heating equipment, thereby solving the problems of unstable water outlet temperature, cold water section during initial water outlet, and poor heating effect in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A constant temperature water outlet device for a towel heating equipment includes a water storage chamber, a heating device, and a plastic outer shell. Both the water storage chamber and the heating device are housed within the plastic outer shell, with the heating device located at the bottom of the water storage chamber. The water storage chamber is connected to the water inlet of the heating device via a three-way pipe. The water outlet of the heating device is connected to an outlet branch and a circulation branch. A first one-way valve is installed in the outlet branch, with its end being the water outlet. A second one-way valve is installed in the circulation branch, and its end is connected to the water storage chamber via the three-way pipe.

[0006] In a further embodiment, the plastic shell is provided with a control module, the control module is provided with a start button, and the control module is electrically connected to the first one-way valve and the second one-way valve respectively.

[0007] In a further embodiment, the water storage chamber, the three-way pipe, the heating device, the circulation branch, and the second one-way valve are interconnected to form a closed-loop circulation channel.

[0008] In a further embodiment, the water outlet of the heating device is connected to a water outlet branch, and the water outlet branch is connected to the water outlet via a first one-way valve. The heating device, the water outlet branch, and the first one-way valve are interconnected to form a water outlet channel.

[0009] In a further embodiment, the outlet channel and the circulation channel are arranged in parallel and are independently connected to each other.

[0010] In a further embodiment, the water outlet end of the heating device is provided with two sets of sealing interfaces, which are respectively sealed and cooperated with the circulation branch and the water outlet branch.

[0011] A method for controlling the constant temperature water outlet of a towel heating device, applied to the constant temperature water outlet device of the aforementioned towel heating device, includes the following steps: S1: Responding to the start signal of the control module, control the heating device to heat the water flowing through the pipe until the water temperature reaches the preset initial temperature; S2: Open the second check valve and keep the first check valve closed to allow the water circuit to enter the circulation state and preheat the entire pipeline until the water temperature in the pipeline reaches the preset temperature. S3: After the pipeline preheating is completed and the water temperature is stable and meets the standard, control the second check valve to close and the first check valve to open, so that the constant temperature water flows out from the outlet end through the outlet branch to absorb water and heat the towel.

[0012] In a further embodiment, in step S2, the water flows in a closed loop along the circulation channel formed by the water storage chamber, the three-way pipe, the heating device, the circulation branch, and the second one-way valve; there is no cold water section remaining in the pipe.

[0013] In a further embodiment, in step S3, only the first check valve is open and the second check valve is closed during the water outlet stage, and the hot water is directly output through the water outlet branch without temperature fluctuation.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The device of the present invention utilizes the diversion and connection function of the three-way pipeline and the on / off coordination of two sets of one-way valves to enable the device to switch between the circulation channel and the outlet channel to complete the water circuit operation mode switching, which facilitates the water preheating and constant temperature water outlet operation. Moreover, the two channels are arranged in parallel and independently connected without affecting each other. At this time, the closed-loop circulation channel uses the closed-loop circulation flow of water to preheat the entire pipeline, eliminate cold water residue, avoid temperature fluctuations in the outlet water, and avoid uneven water temperature that reduces the quality of towel heating.

[0015] 2. At the same time, this invention achieves automatic water circuit switching, leak-proof pipeline connection sealing, and automated operation of the work process by setting up the circulation channel and the outlet channel in parallel, sealing and adapting the heating device sealing interface, and controlling the one-way valve through the control module's electronic linkage regulation. This further improves the stability of constant temperature water output and the reliability of equipment use. The overall structure is compact, the channel structure is reasonable, and the water circuit switching is smooth, which can ensure continuous constant temperature water supply for towel heating equipment and has strong practicality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the assembled structure of the present invention; Figure 2 This is a schematic diagram of the disassembled structure of the present invention; Figure 3 yes Figure 2 Enlarged view of region A in the middle; Figure 4 This is a top view of the present invention; Figure 5 yes Figure 4 Sectional view of region AA in the middle; Figure 6 This is a schematic diagram of the principle framework of the present invention.

[0017] In the diagram, the correspondence between component names and drawing numbers is as follows: 11. Plastic outer shell; 12. Water storage chamber; 13. Heating device; 14. T-shaped pipe; 15. Water outlet branch; 16. Circulation branch; 17. First check valve; 18. Second check valve; 21. Control module; 22. Start button; 31. Sealed interface. Detailed Implementation

[0018] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the technical solutions of the present invention, but should not be used to limit the scope of protection of the present invention.

[0019] Example:

[0020] Please see Figure 1-6 In this invention, a constant temperature water outlet device and control method for a towel heating equipment includes a water storage chamber 12, a heating device 13, and a plastic shell 11. The plastic shell 11 is made of high temperature resistant plastic and is integrally injection molded. The structure is sealed without splicing gaps, providing a fully enclosed closed protection for the internal water storage, heating and electrical control structure, avoiding external impact damage, water vapor and dust intrusion, and water leakage, thereby improving the overall durability and safety of the equipment.

[0021] The plastic outer shell 11 has a sealed water storage chamber 12 embedded inside. The volume of the water storage chamber 12 is adapted to the normal water consumption of the towel heating equipment. The inner wall is treated with a smooth anti-scaling coating to store the clean water required for towel heating. It provides a stable and sealed water storage space for heating, circulation and water output, eliminating the risk of leakage and seepage from the source.

[0022] The heating device 13 is located at the bottom of the water storage chamber 12. The heating device 13 uses an instant-heating aluminum heating tube, which has high heat conversion efficiency and fast heating speed. As the main heating component, water from the water storage chamber 12 flows to the heating device 13 through a pipe, instantly heating up to quickly meet the water temperature requirements for towel heating. The water storage chamber 12 is sealed to the inlet of the heating device 13 via a three-way pipe 14, ensuring smooth water flow into the heating device 13 for heating. The outlet of the heating device 13 is sealed with two sets of sealing interfaces 31, which respectively seal with the circulation branch 16 and the outlet branch 15. The sealing interfaces 31 are sealed with silicone sealing gaskets to prevent leakage and cross-contamination, ensuring that the two water paths are independent and sealed. The outlet end of the device 13 is connected to the outlet branch 15 and the circulation branch 16 through two sets of sealed interfaces 31. The outlet branch 15 and the circulation branch 16 are arranged in parallel and are independently connected to each other without interference. The outlet branch 15 is internally sealed with a first one-way valve 17. The end of the pipe is a special outlet end for towel heating. The first one-way valve 17 is a normally closed electromagnetic one-way valve, which only allows water to flow outward in one direction, which can prevent backflow and cross-contamination at the outlet end and ensure the independence of the outlet passage. The circulation branch 16 is internally sealed with a second one-way valve 18. The end of the pipe is sealed to the water storage chamber 12 through a three-way pipe 14. The second one-way valve 18 is also a normally closed electromagnetic one-way valve, which can control the on / off state of the circulation branch 16.

[0023] The water storage chamber 12, the three-way pipe 14, the heating device 13, the circulation branch 16 and the second one-way valve 18 are interconnected to form a closed-loop circulation channel. The water can continuously circulate in the closed-loop channel to achieve preheating of the entire pipeline and completely eliminate the cold water section residue. The heating device 13, the outlet branch 15 and the first one-way valve 17 are interconnected to form an independent outlet channel. During the outlet stage, only the outlet channel is open to ensure that the outlet water temperature does not fluctuate or interfere.

[0024] The plastic shell 11 is equipped with a control module 21. The control module 21 panel is fitted with a waterproof silicone start button 22. The button has a clear tactile feel, is dustproof and waterproof, and is suitable for the humid environment of the towel heating device. The control module 21 is stably electrically connected to the first one-way valve 17 and the second one-way valve 18 through a low-voltage signal line. It can independently and accurately control the opening and closing state of the two one-way valves according to the preset control logic, and quickly complete the automatic switching between circulation mode and water outlet mode without manual intervention.

[0025] It should be noted that the control module 21 can be a Siemens SR40 programmable logic control module. The module has built-in safety functions such as temperature calibration, overload protection, and power failure in case of water shortage. It is stable in operation, has strong anti-interference ability, and can be adapted to long-term continuous working scenarios.

[0026] The specific implementation steps of the constant temperature water outlet control method of this device are as follows: S1: In response to the start signal of the control module 21, after the operator presses the start button 22, the control module 21 immediately starts the heating device 13. The heating device 13 rapidly heats the incoming water until the water temperature reaches the preset initial temperature, completing the initial heating operation and preparing for subsequent circulation preheating.

[0027] S2: Control module 21 controls the opening of the second check valve 18 and keeps the first check valve 17 in a fully closed state, so that the water circuit enters a closed-loop circulation preheating state; the water body continuously flows in a closed loop along the closed-loop circulation channel formed by the water storage chamber 12, the three-way pipe 14, the heating device 13, the circulation branch 16, and the second check valve 18, fully preheating the entire pipeline until the temperature of all water in the pipeline reaches the preset temperature, completely eliminating the cold water section residue in the pipeline, and ensuring that the subsequent water outlet has no sudden temperature drop and no cold water impact.

[0028] S3: After the pipeline preheating is completed and the water temperature in the water storage chamber 12 and the pipeline is stable and meets the standard, the control module 21 quickly switches the water circuit state, controls the second one-way valve 18 to be fully closed and the first one-way valve 17 to be opened. At this time, only the independent water outlet channel is open, and the closed loop circulation channel is completely closed. The constant temperature water flows out stably from the water outlet end through the water outlet branch 15 to absorb water and heat the towel. During the water outlet stage, only the first one-way valve 17 is open and the second one-way valve 18 is closed. The hot water is directly output through the water outlet branch 15 without cross-flow or diversion, and the water outlet temperature does not fluctuate.

[0029] The working principle of this invention is: The assembly process is as follows: Place the integrally injection-molded plastic shell 11 stably on the installation position of the towel heating equipment, ensuring the equipment is stable and does not shake; position and fix the heating device 13 inside the plastic shell 11, corresponding to the bottom position of the water storage chamber 12, ensuring stable installation and even force distribution; seal one end of the three-way pipe 14 to the water storage chamber 12 and the other end to the water inlet of the heating device 13, install sealing gaskets and evenly tighten the joints to ensure water flows smoothly from the water storage chamber 12 into the heating device 13 without leakage; install silicone sealing gaskets on the two sets of sealing interfaces 31 at the water outlet of the heating device 13, and sequentially connect the water outlet branch 15 and the circulation branch 16 to the two sets of sealing interfaces 31 and tighten them, ensuring that the water outlet branch 15 and the circulation branch 16 are set up independently in parallel without the risk of cross-contamination; set the first one-way valve 17 to open in one-way direction. A directional seal is installed in the outlet branch 15. The second check valve 18 is sealed in the circulation branch 16 according to the circulation direction. The end of the circulation branch 16 is then sealed and connected to the three-way pipe 14, so that the water storage chamber 12, the three-way pipe 14, the heating device 13, the circulation branch 16 and the second check valve 18 form a closed-loop circulation channel. At the same time, the heating device 13, the outlet branch 15 and the first check valve 17 form an independent outlet channel. It is confirmed that the two channels are unobstructed and leak-free. The control module 21 is fixedly installed on one side of the plastic shell 11. The start button 22 is embedded in the preset position on the control module 21 panel. The waterproof circuit connection between the control module 21 and the first check valve 17 and the second check valve 18 is completed. The wiring is tidied and insulation protection is provided. Finally, the whole machine is tested for water sealing and the power valves are debugged. After confirming that all components are operating normally, the whole machine is assembled.

[0030] The maintenance process is as follows: Before daily equipment operation, check the overall sealing of the water storage chamber 12, the three-way pipe 14, the outlet branch 15, and the circulation branch 16 to ensure there is no leakage or blockage, and that the plastic shell 11 is free from deformation or damage. Weekly, disassemble the first check valve 17 and the second check valve 18 to clean the internal scale, impurities, and deposits. Check the valve disc sealing surface for wear and deformation, ensuring smooth opening and closing of the check valves without jamming or sealing failure, achieving water circuit switching and preventing backflow or cross-contamination. Monthly, check the operating condition of the heating device 13, cleaning the inner wall, inlet, and sealing interface 31 of the heating device 13 to ensure there is no overheating, no abnormal noise, and stable heating efficiency. Regularly wipe the control module 21 and start button 22 with a clean, soft cloth to remove dust and water stains, keeping the control panel clean and clear, and check the start button 22 for sensitive feedback. 1. Ensure there are no jams, and that the wiring of control module 21 is secure and free from short circuits. 2. Confirm that the silicone sealing gasket of sealing interface 31 is free from aging, cracking, or loss of elasticity. If any leaks or poor sealing occur, immediately replace the sealing gasket and re-tighten the joint. 3. Drain the water from the storage chamber 12 quarterly, clean the inner wall of scale and impurities, and simultaneously flush the closed-loop circulation channel and independent outlet channel to ensure unobstructed water flow. 4. Before long-term shutdown, drain all residual water from the storage chamber 12, three-way pipe 14, outlet branch 15, and circulation branch 16, wipe dry the surface of all components, and take precautions against dust and moisture. 5. Before restarting, conduct a water flow and sealing test and power-on debugging to confirm that the heating device 13, one-way valve, and control module 21 are functioning correctly before putting them into use. 6. Regularly check the integrity of the plastic outer shell 11 to ensure there are no cracks or aging, ensuring reliable overall enclosure and protection of the equipment and extending its service life.

[0031] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A constant temperature water outlet device for a towel heating equipment, comprising a water storage chamber (12), a heating device (13), and a plastic outer shell (11), characterized in that: The water storage chamber (12) and the heating device (13) are both located inside the plastic shell (11). The heating device (13) is located at the bottom of the water storage chamber (12). The water storage chamber (12) is connected to the water inlet of the heating device (13) through a three-way pipe (14). The water outlet of the heating device (13) is connected to an outlet branch (15) and a circulation branch (16). A first one-way valve (17) is installed in the outlet branch (15), and the end is the water outlet. A second one-way valve (18) is installed in the circulation branch (16), and the end is connected to the water storage chamber (12) through the three-way pipe (14).

2. The constant temperature water outlet device of the towel heating equipment according to claim 1, characterized in that: The plastic shell (11) is provided with a control module (21), the control module (21) is provided with a start button (22), and the control module (21) is electrically connected to the first one-way valve (17) and the second one-way valve (18) respectively.

3. The constant temperature water outlet device of the towel heating equipment according to claim 1, characterized in that: The water storage chamber (12), the three-way pipe (14), the heating device (13), the circulation branch (16) and the second one-way valve (18) are interconnected and form a closed-loop circulation channel.

4. The constant temperature water outlet device of the towel heating equipment according to claim 3, characterized in that: The outlet end of the heating device (13) is connected to the outlet branch (15), and the outlet branch (15) is connected to the outlet end via the first one-way valve (17). The heating device (13), the outlet branch (15) and the first one-way valve (17) are interconnected to form an outlet flow channel.

5. The constant temperature water outlet device of a towel heating equipment according to claim 4, characterized in that: The outlet channel and the circulation channel are arranged in parallel and are independently connected to each other.

6. The constant temperature water outlet device of a towel heating equipment according to claim 1, characterized in that: The water outlet of the heating device (13) is provided with two sets of sealing interfaces (31), and the two sets of sealing interfaces (31) are respectively sealed to the circulation branch (16) and the water outlet branch (15).

7. A method for controlling the constant temperature water outlet of a towel heating device, applied to the constant temperature water outlet device of a towel heating device according to any one of claims 1 to 6, characterized in that, Includes the following steps: S1: Responding to the start signal of the control module (21), control the heating device (13) to heat the water flowing through the pipe (12) until the water temperature reaches the preset initial temperature; S2: Open the second check valve (18) and keep the first check valve (17) closed to allow the water circuit to enter the circulation state and preheat the entire pipeline until the water temperature in the pipeline reaches the preset temperature. S3: After the pipeline preheating is completed and the water temperature is stable and meets the standard, control the second check valve (18) to close and the first check valve (17) to open, so that the constant temperature water flows out from the outlet end through the outlet branch (15) to absorb water and heat the towel.

8. The method for controlling the constant temperature water output of a towel heating device according to claim 7, characterized in that: In step S2, the water flows in a closed loop along the circulation channel formed by the water storage chamber (12), the three-way pipe (14), the heating device (13), the circulation branch (16), and the second one-way valve (18), with no cold water section remaining in the pipe.

9. The method for controlling the constant temperature water output of a towel heating device according to claim 7, characterized in that: In step S3, during the water outlet stage, only the first check valve (17) is open and the second check valve (18) is closed. Hot water is directly output through the outlet branch (15), and there is no temperature fluctuation in the outlet water.

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