Instant electric water heater
By introducing an overflow pipe and overflow valve into instant electric water heaters, and using temperature and flow sensors to control the overflow valve to automatically discharge excess hot water, the problem of scalding caused by temperature rise during water outages is solved, improving equipment safety and user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2026-03-17
AI Technical Summary
Existing instant electric water heaters can cause scalding if residual heat from the water supply is not used, as the water temperature rises after the user stops using the water.
An instantaneous electric water heater was designed, which includes an overflow pipe and an overflow valve. The overflow valve is controlled by a temperature sensor and a flow sensor to automatically discharge residual hot water after the user stops using water, thus avoiding the accumulation of residual heat.
It effectively solved the problem of temperature rise during water outages, reduced the risk of scalding, and improved the user's bathing comfort and the safety of the equipment.
Smart Images
Figure CN224003909U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of electric water heaters, and more particularly to an instantaneous electric water heater. Background Technology
[0002] The instant electric water heaters currently available on the market are all equipped with a flow-through cast aluminum heater. When water flows through the heater, the water temperature is heated, thus producing hot water. However, these products can also cause "temperature rise during water outages," which can be a problem for users.
[0003] Water outage temperature rise: This refers to the situation where, after the user turns off the water, the cast aluminum heater also stops heating. However, the heat that the cast aluminum heater has not fully released will be released into the pipes connected to the heater, causing the water in the pipes to be reheated by the residual heat of the heater. When the user uses the water again in a short period of time, this water can cause the user to be scalded. Utility Model Content
[0004] This application provides an instant electric water heater that automatically discharges the residual heat and high temperature water after the user stops using the water, solving the problem of scalding users due to water outages caused by instant water heaters and increasing the user's bathing comfort.
[0005] This application provides an instantaneous electric water heater, comprising:
[0006] The housing has a receiving cavity and a first mounting hole, a second mounting hole and a third mounting hole communicating with the receiving cavity;
[0007] A heating element is disposed within the receiving cavity; the heating element is connected to a first pipe and a second pipe;
[0008] A water inlet pipe is inserted through the first mounting hole and connected to the end of the first pipe away from the heating element;
[0009] A water outlet pipe is inserted through the second mounting hole and connected to the end of the second pipe away from the heating element;
[0010] An overflow pipe is inserted through the third mounting hole and connected to the end of the second pipe away from the heating element, and is arranged in parallel with the water outlet pipe; the overflow pipe is equipped with an overflow valve.
[0011] As a preferred embodiment of this application, it further includes a temperature sensor disposed in the second pipeline; the temperature sensor is electrically connected to the overflow valve.
[0012] As a preferred embodiment of this application, the overflow pipe is provided with an overflow protrusion ring, and the overflow protrusion ring is provided with an overflow port; the overflow valve is movably inserted through the overflow port to open or close the overflow port.
[0013] As a preferred embodiment of this application, the overflow valve includes:
[0014] A push rod is installed on the pipe wall inside the overflow pipe;
[0015] A temperature-sensing bulb is inserted through the overflow port, and one end of the temperature-sensing bulb is movably connected to the top rod; the temperature-sensing bulb contains a temperature-sensing expansion material.
[0016] As a preferred embodiment of this application, the material of the thermosensitive expansion material is paraffin wax.
[0017] As a preferred embodiment of this application, the temperature sensing bulb is further provided with a limiting protrusion, which is located on the side of the overflow protrusion away from the top rod.
[0018] As a preferred embodiment of this application, a sealing ring is provided between the limiting protrusion and the overflow protrusion, and the sealing ring is connected to the overflow protrusion.
[0019] As a preferred embodiment of this application, the overflow pipe includes a first overflow section and a second overflow section, the first overflow section and the second overflow section are arranged at an angle, and the overflow port is located on the side of the first overflow section away from the second overflow section;
[0020] The top rod is located on the side wall of the second overflow section.
[0021] As a preferred embodiment of this application, a flow sensor is also included, which is disposed in the inlet pipe and / or the first pipe.
[0022] The beneficial effects of this application are:
[0023] The instantaneous water heater includes a housing, a heating element, an inlet pipe, an outlet pipe, an overflow pipe, and an overflow valve. The housing has a receiving cavity and a first mounting hole, a second mounting hole, and a third mounting hole communicating with the receiving cavity. The heating element is disposed in the receiving cavity. The heating element is connected to a first pipe and a second pipe. The inlet pipe passes through the first mounting hole and is connected to the end of the first pipe away from the heating element. The outlet pipe passes through the second mounting hole and is connected to the end of the second pipe away from the heating element. The overflow pipe passes through the third mounting hole and is connected to the end of the second pipe away from the heating element, and is arranged in parallel with the outlet pipe. The overflow pipe is equipped with an overflow valve.
[0024] In this system, cold water flows into the inlet pipe, then passes through the heating element for heating, and the heated water is discharged through the outlet pipe. By setting up an overflow pipe and an overflow valve, which are connected in parallel with the outlet pipe, the overflow valve can be opened after the user stops using water, and the residual hot water generated can be discharged into the overflow pipe in a timely manner, instead of remaining in the heating element or flowing directly to the user. This effectively solves the problem of temperature rise during water outages and reduces the risk of scalding. Attached Figure Description
[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0026] Figure 1 This is a structural diagram of an instant water heater;
[0027] Figure 2 for Figure 1 A partial cross-sectional view of section A, where the overflow valve is in the closed state;
[0028] Figure 3 for Figure 1 A partial cross-sectional view of section A, where the overflow valve is in the open position;
[0029] Figure 4 for Figure 1 Control block diagram of the overflow valve.
[0030] Explanation of reference numerals in the attached figures:
[0031] 1. Housing; 2. Heating element; 3. Controller; 4. Inlet pipe; 5. Flow sensor; 6. Overflow valve; 61. Temperature sensor; 62. Sealing ring; 63. Top rod; 7. Overflow pipe; 71. First overflow section; 72. Second overflow section; 8. Outlet pipe; 9. Temperature sensor; 10. Overflow port; 11. Limiting ring; 12. Overflow ring. Detailed Implementation
[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0033] like Figures 1 to 4As shown, this application provides an instantaneous water heater, including a housing 1, a heating element 2, an inlet pipe 4, an outlet pipe 8, and an overflow pipe 7; the housing 1 has a receiving cavity and a first mounting hole, a second mounting hole, and a third mounting hole communicating with the receiving cavity; the heating element 2 is disposed in the receiving cavity; the heating element 2 is connected to a first pipe and a second pipe; the inlet pipe 4 passes through the first mounting hole and is connected to the end of the first pipe opposite to the heating element 2; the outlet pipe 8 passes through the second mounting hole and is connected to the end of the second pipe opposite to the heating element 2; the overflow pipe 7 passes through the third mounting hole and is connected to the end of the second pipe opposite to the heating element 2, and is arranged in parallel with the outlet pipe 8; the overflow pipe 7 is provided with an overflow valve 6.
[0034] The heating element 2 is housed within the housing 1 to heat the flowing water. The heating element 2 is connected to a first pipe and a second pipe to achieve water circulation heating. The inlet pipe 4 passes through the first mounting hole in the housing 1 and is connected to the end of the first pipe opposite to the heating element 2, allowing water to flow into the heating element 2. The outlet pipe 8 passes through the second mounting hole in the housing 1 and is connected to the end of the second pipe opposite to the heating element 2, ensuring that heated water can flow out for user use. Furthermore, the overflow pipe 7 passes through the third mounting hole in the housing 1 and is connected to the end of the second pipe opposite to the heating element 2, and is arranged in parallel with the outlet pipe 8. This ensures that when the user stops using water or when the water level is too high, the overflow valve 6 is opened, and the generated residual hot water is promptly discharged into the overflow pipe 7, instead of remaining in the heating element 2 or flowing directly to the user, thus avoiding potential safety hazards. To better control this process, an overflow valve 6 is installed on the overflow pipe 7, which can better control the flow of water, thereby ensuring the safety and efficiency of the instant water heater, effectively solving the problem of temperature rise during water outages, and reducing the risk of scalding. In addition, the instant water heater has a compact structure and is easy to use.
[0035] Furthermore, a temperature sensor 9 is included, which is located in the second pipe; the temperature sensor 9 is electrically connected to the overflow valve 6. It should be noted that the temperature sensor 9 and the overflow valve 6 are electrically connected via the controller 3, and the overflow valve 6 can be an electrically controlled valve element, such as a solenoid valve. When the controller 3 determines that a water outage temperature rise has occurred (when the signal from the flow sensor 5 is below its threshold Q, it indicates that the user has turned off the water; when the temperature sensor 9 detects that the temperature has risen to the threshold T, it indicates that a water outage temperature rise has occurred), the overflow valve 6 is opened to drain water; when there is no water outage temperature rise, the overflow valve 6 is closed. In addition, the controller 3 is also responsible for controlling the power output of the heating element 2 by monitoring the numerical signal provided by the temperature sensor 9 to ensure the safe operation of the equipment.
[0036] Furthermore, the overflow pipe 7 is provided with an overflow protruding ring 12, and the overflow protruding ring 12 is provided with an overflow port 10; the overflow valve 6 is movably inserted through the overflow port 10 to open or close the overflow port 10. The overflow port 10 can be opened or closed as needed to discharge water; when the overflow port 10 is opened, water will be discharged into the external environment through the overflow port 10, for example, into a floor drain.
[0037] Furthermore, the overflow valve 6 includes: a push rod 63 disposed within the wall of the overflow pipe 7 for pushing or closing the overflow port 10; a temperature sensing bulb 61 passing through the overflow port 10, with one end of the temperature sensing bulb 61 movably connected to the push rod 63; and a temperature-sensitive expansion material disposed within the temperature sensing bulb 61. The paraffin material within the temperature sensing bulb 61 expands and contracts with temperature changes. When the temperature sensing bulb 61 senses that the water temperature inside the pipe is greater than or equal to a temperature threshold T, the paraffin expands due to heat, pushing the push rod 63 outward, thereby causing the overflow valve 6 to open and hot water to flow out of the overflow port 10. When the temperature sensing bulb 61 senses that the water temperature inside the pipe is less than the temperature threshold T, the paraffin cools and contracts, the push rod 63 returns to its original position, causing the overflow valve 6 to close again, preventing unnecessary leakage. Because the temperature sensing bulb 61 and the push rod 63 are movably connected, the opening and closing degree of the overflow port 10 can be adjusted according to actual temperature changes, ensuring that the system is always in optimal working condition.
[0038] Furthermore, the temperature-sensitive expansion material is made of paraffin wax. Paraffin wax has excellent thermal sensitivity and expands rapidly when the temperature rises, ensuring that the overflow valve 6 can respond promptly to temperature changes and automatically open or close. Specifically, when the water temperature exceeds the set value, the expansion of the paraffin wax pushes the push rod 63 to open the overflow valve 6, allowing hot water to flow out from the overflow port 10, preventing safety issues caused by excessively high water temperatures. Alternatively, when the temperature rises abnormally, the rapid expansion of the paraffin wax triggers the overflow valve 6 to promptly discharge excess hot water, avoiding scalding or other safety hazards caused by high temperatures. Paraffin wax returns to its original state after cooling, thus maintaining effective performance through multiple temperature cycles and extending the product's lifespan. In addition, the temperature-sensitive expansion material can also be made of other materials that expand and contract with temperature, including but not limited to paraffin wax.
[0039] Furthermore, the temperature sensing element 61 is also provided with a limiting protrusion 11, which is located on the side of the overflow protrusion 12 opposite to the top rod. The limiting protrusion 11 can effectively cooperate with the overflow protrusion 12 to achieve the predetermined limiting function, ensuring the safety and reliability of the temperature sensing element 61 within its normal operating range.
[0040] Furthermore, a sealing ring 62 is provided between the limiting protrusion 11 and the overflow protrusion 12 to enhance the sealing performance of their connection; and the sealing ring 62 is connected to the overflow protrusion 12. When the temperature sensing bulb 61 expands, the limiting protrusion 11 will move to the first overflow part 71 under the reaction force of the top rod 63 along with the temperature sensing bulb 61 to open the overflow valve 6 and discharge the superheated water in time.
[0041] Furthermore, the overflow pipe 7 includes a first overflow section 71 and a second overflow section 72, with the first overflow section 71 and the second overflow section 72 arranged at an angle, and the overflow port 10 located on the side of the first overflow section 71 away from the second overflow section 72; wherein, the push rod 63 is provided on the side wall of the second overflow section 72. More specifically, the first overflow section 71 and the second overflow section 72 are at a certain angle to each other, reducing the direct impact of water flow and lowering the influence of water pressure on the temperature sensing bulb 61 and the push rod 63. In particular, the overflow port 10 is located on the side of the first overflow section 71 away from the second overflow section 72 to prevent impurities from entering and reduce the risk of blockage, thereby improving overflow efficiency. In addition, the push rod 63 is provided on the side wall of the second overflow section 72, allowing the push rod 63 to more directly sense the expansion or contraction of the temperature sensing bulb 61, improving the response speed and sensitivity of the overflow valve 6, and ensuring the stability and safety of the overflow process.
[0042] Furthermore, a flow sensor 5 is included, which is installed in the water inlet pipe 4; the flow sensor 5 may also be installed in the first pipe. The flow sensor 5 is used to detect the water flow threshold Q to determine whether the user is using water. The flow sensor 5 is electrically connected to the controller 3, which controls the on / off state of the heating element 2 by receiving and analyzing the flow signal to ensure the rational use of water resources and the safe operation of the equipment.
[0043] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.
[0044] The above description describes specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. An electric water heater of the instant heating type, characterized in that, The utility model relates to a kind of water heater, including: Box (1), with containing cavity and with the containing cavity Communication First installation hole, second installation hole and third installation hole; Heating element (2), is located in the containing cavity;The heating element (2) is connected with first pipeline and second pipeline; Water inlet pipe (4), is arranged in the first installation hole, and is connected to the one end of the first pipeline away from the heating element (2); Water outlet pipe (8), is arranged in the second installation hole, and is connected to the one end of the second pipeline away from the heating element (2); Overflow pipe (7), is arranged in the third installation hole, and is connected to the one end of second pipeline away from the heating element (2), and it is parallelly connected with the water outlet pipe (8);The overflow pipe (7) is equipped with overflow valve (6).
2. The electric instantaneous water heater according to claim 1, wherein It further includes temperature sensor (9), the temperature sensor (9) is equipped in the second pipeline;The temperature sensor (9) is electrically connected with the overflow valve (6).
3. The electric instantaneous water heater according to claim 1, wherein Overflow convex ring (12) is equipped in the overflow pipe (7), and the overflow convex ring (12) is equipped with overflow port (10);The overflow valve (6) is movably arranged in the overflow port (10), to open or close the overflow port (10).
4. The electric instantaneous water heater according to claim 3, wherein The overflow valve (6) includes: Top rod (63), is arranged in the pipe wall in the overflow pipe (7); Temperature sensing bag (61) is arranged in the overflow port (10), and one end of the temperature sensing bag (61) is movably connected with the top rod (63);Temperature sensing bag (61) is equipped with temperature sensing expansion material.
5. The electric instantaneous water heater according to claim 4, wherein The material of the temperature sensing expansion material is paraffin.
6. The electric instantaneous water heater according to claim 4, wherein The temperature sensing bag (61) is further equipped with limiting convex ring (11), and the limiting convex ring (11) is located on the side of the overflow convex ring (12) away from the top rod.
7. The electric instantaneous water heater according to claim 6, wherein Sealing ring (62) is arranged between the limiting convex ring (11) and the overflow convex ring (12), and the sealing ring (62) is connected to the overflow convex ring (12).
8. The electric instantaneous water heater according to claim 4, wherein The overflow pipe (7) includes first overflow part (71) and second overflow part (72), the first overflow part (71) and the second overflow part (72) are arranged at an angle, and the overflow port (10) is located on the side of the first overflow part (71) away from the second overflow part (72); Wherein, the top rod (63) is arranged on the side wall of the second overflow part (72).
9. The electric instantaneous water heater according to claim 1, wherein It further includes flow sensor (5), and the flow sensor (5) is arranged in water inlet pipe (4) and / or the first pipeline.