Water heater capable of removing scale

By incorporating cleaning and fan components into the water heater design, the problem of limescale buildup is solved, achieving automatic cleaning and improved heating efficiency, ensuring the normal use and health and safety of the water heater.

CN224188774UActive Publication Date: 2026-05-01ZHONGSHAN CHANGRONG ELECTRIC APPLIANCE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHONGSHAN CHANGRONG ELECTRIC APPLIANCE CO LTD
Filing Date
2025-04-09
Publication Date
2026-05-01

AI Technical Summary

Technical Problem

During use, scale tends to accumulate on the inner wall of the tank of existing electric water heaters, especially around the heating element, which can cause the equipment to malfunction and breed bacteria, affecting health.

Method used

A water heater with a cleaning component was designed, including a drive motor, a rotating base, a drive column, and a cleaning component. The cleaning component automatically removes scale by rubbing against the inner wall of the heat collection hood through reciprocating movement. The fan assembly accelerates water circulation, and the partition design of the isolation plate improves heating efficiency and water quality uniformity.

Benefits of technology

It effectively removes limescale from the inner wall of the heat collector cover, preventing accumulation, keeping the water heater tank clean, preventing bacterial growth, making it more convenient to use and improving heating efficiency.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224188774U_ABST
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Abstract

The water heater comprises a water heater inner container, a water outlet pipe and a water inlet pipe, the water heater inner container is further connected with a heating pipe, the water heater inner container is further internally connected with a heat collecting cover, the heat collecting cover is arranged outside the heating pipe in a covering mode, and a cleaning assembly capable of cleaning the inner wall of the heat collecting cover is arranged on the heat collecting cover. The cleaning assembly comprises a cleaning part movably connected into the heat collecting cover, a connecting part extending obliquely is arranged on the inner wall of the cleaning part, a driving motor is connected to the heat collecting cover, a rotating seat rotating along with the driving motor is connected to an output shaft of the driving motor, and two driving columns arranged at intervals are connected to the rotating seat. A movable groove allowing the connecting part to move therein is formed between the two driving columns, a guide column protruding towards the heat collecting cover is arranged on the cleaning component, a roller is connected to the guide column, and a guide groove is formed in the heat collecting cover. According to the water heater, water scale around the heating assembly can be cleaned conveniently, and the inner container of the water heater is kept clean.
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Description

A water heater capable of removing limescale Technical Field

[0001] This utility model relates to the field of water heaters, and in particular to a water heater capable of removing limescale. Background Technology

[0002] Existing electric water heaters produce limescale during high-temperature heating, which accumulates on the inner wall of the tank. Over time, this limescale hardens and adheres firmly to the bottom of the tank, making it difficult to clean. In areas with hard water, especially around the heating element, limescale buildup is more severe, rendering the water heater unusable. Furthermore, the limescale deposits on the inner tank easily breed bacteria, polluting the water and posing a health risk.

[0003] This utility model was developed based on the above-mentioned shortcomings. Summary of the Invention

[0004] The purpose of this invention is to overcome the problems of the prior art and provide a water heater that can remove scale by making it easy to clean the area around the heating element and keeping the inner tank of the water heater clean.

[0005] To achieve the above objectives, the present invention adopts the following solution:

[0006] A water heater capable of removing limescale includes: a water heater inner tank, wherein the water heater inner tank is provided with a water storage chamber. The water heater's inner tank is connected with outlet pipes and inlet pipes at intervals. A heating pipe that can extend into the water storage chamber is also connected to the inner tank. A heat collection shroud is also connected inside the inner tank, covering the heating pipe and creating a heating zone within it. Multiple water inlets are located on the side walls of the heat collection shroud, and a water outlet is located on the top. A cleaning assembly for cleaning its inner walls is provided on the heat collection shroud. The cleaning assembly includes a cleaning component movably connected inside the heat collection shroud, with an inclined connecting portion on its inner wall. A drive motor is connected to the heat collection shroud, and a rotating seat that follows the motor's rotation is connected to the output shaft. Two spaced-apart drive columns are connected to the rotating seat, forming a movable groove between the two drive columns that allows the connecting portion to move within. The cleaning component has guide columns protruding towards the heat collection shroud, with rollers connected to the guide columns. The heat collection shroud has guide grooves that allow the rollers to move within and guide the cleaning component to reciprocate relative to the heat collection shroud.

[0007] The guide groove is rectangular in shape.

[0008] The heat collection cover is provided with an opening, and a connecting plate is connected to the outside of the heat collection cover. A guide groove is formed between the peripheral side of the connecting plate and the wall of the opening.

[0009] The cleaning component is arranged in a ring shape, and the outer surface of the cleaning component is frosted.

[0010] The cleaning component is also provided with a clearance groove that allows the output shaft to move when it moves relative to the heat collection shroud. The cleaning component is also provided with a through groove that can communicate with the water inlet.

[0011] The inner tank of the water heater is also provided with an installation part, the heating tube is detachably connected to the installation part, the heating tube includes a base connected to the installation part, the base is provided with multiple heating tubes, the base is also provided with a drain outlet for draining water, and the drain outlet is connected with a sealing cap.

[0012] The heat collection cover is also connected to an isolation plate that can divide the water storage chamber into a hot water zone and a mixing water zone. The hot water zone is located above the heat collection cover and is connected to the water outlet of the heating zone of the heat collection cover. One end of the water outlet pipe is located in the hot water zone. The isolation plate is provided with a through hole that can connect the hot water zone and the mixing water zone.

[0013] The isolation plate includes a first plate and a second plate arranged perpendicularly to each other. The first plate is arranged horizontally, and the second plate is connected to one side of the first plate and extends vertically upward relative to the first plate. The edge of the second plate is connected to the inner wall of the inner tank of the water heater.

[0014] The water inlet pipe extends from the mixing zone to multiple water inlets, and the water outlet pipe extends from the mixing zone to the hot water zone.

[0015] A fan assembly capable of accelerating water circulation is connected to the inner tank of the water heater on the side away from the water outlet pipe.

[0016] Compared with existing technologies, this utility model has the following advantages:

[0017] When hot water is needed, the cleaning component is activated while the heating element is heating, driving the motor to rotate. The motor's rotation drives the output shaft, which in turn rotates the connected rotating seat. This rotation of the output shaft, in turn, drives the two drive columns to rotate. The two drive columns, in turn, push against the connecting part, causing the cleaning component to move relative to the heat collector shroud. Due to the guide columns and the movable groove, the cleaning component reciprocates relative to the heat collector shroud. The outer wall of the cleaning component contacts the heat collector shroud and gradually rubs against its inner wall, preventing scale buildup. Because the heating element is confined within the heating area of ​​the heat collector shroud, most scale accumulates on its inner wall. The cleaning component automatically cleans the inner wall of the heat collector shroud, providing excellent cleaning results and preventing scale buildup, making it more convenient to use. Attached Figure Description

[0018] Figure 1 is a schematic diagram of the structure of the water heater of this utility model that can remove limescale;

[0019] Figure 2 is one of the enlarged views of the water heater of this utility model that can remove limescale;

[0020] Figure 3 is a partial enlarged view of the water heater of this utility model that can remove limescale.

[0021] Figure 4 is a structural diagram of the heat collection cover and isolation plate in the water heater of this utility model that can remove limescale;

[0022] Figure 5 is a perspective view of the cleaning component in the water heater of this utility model that can remove limescale;

[0023] Figure 6 is an exploded view of the cleaning component in the water heater of this utility model that can remove limescale;

[0024] Figure 7 is a side view of the cleaning component in the water heater of this invention, which is capable of removing limescale.

[0025] Figure 8 shows the state of the rollers moving in the water heater of this utility model that can remove limescale.

[0026] Figure 9 is a perspective view of the heat collection shroud in the water heater of this utility model that can remove limescale;

[0027] Figure 10 is a perspective view of the heating component in the water heater of this utility model that can remove limescale.

[0028] Labels: 1. Inner tank of water heater; 11. Storage chamber; 111. Hot water zone; 112. Mixing zone; 12. Outlet pipe; 13. Inlet pipe; 14. Mounting part; 2. Heating assembly; 2. Base; 21. Sewage outlet; 211. Heating tube; 22. Sealing cover; 23. Heat collector cover; 3. Heating zone; 31. Inlet; 32. Outlet; 33. Inner wall; 34. Opening; 35. Connecting plate; 36. Cleaning assembly; 4. Cleaning component; 41. Connecting part; 411. Guide column; 412. Roller; 413. Outer side; 414. Through groove; 415. Drive motor; 42. Output shaft; 421. Rotating seat; 431. Drive column; 431. Movable groove; 432. Guide groove; 44. Clearance groove; 45. Isolation plate; 5. Through hole; 51. First plate; 52. Second plate; 53. Fan assembly; 6. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to embodiments:

[0030] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0031] As shown in Figures 1 to 10, a water heater capable of removing limescale includes: a water heater inner tank 1, a water storage cavity 11 on the inner tank 1, a water outlet pipe 12 and a water inlet pipe 13 connected at intervals on the inner tank 1, a heating element 2 that can extend into the water storage cavity 11 connected to the inner tank 1, a heat collection cover 3 connected inside the inner tank 1, the heat collection cover 3 covering the heating element 2, forming a heating zone 31 inside the heat collection cover 3, multiple water inlets 32 on the side wall of the heat collection cover 3, a water outlet 33 on the top of the heat collection cover 3, and a cleaning component 4 on the heat collection cover 3 capable of cleaning its inner wall 34. The cleaning component 4 includes a cleaning part 41 movably connected inside the heat collection cover 3, and the inner wall of the cleaning part 41 has an inclined extension... The connecting part 411 extends, and a drive motor 42 is connected to the heat collection cover 3. A rotating seat 43 that follows the rotation of the drive motor 42 is connected to the output shaft 421. Two spaced drive columns 431 are connected to the rotating seat 43. A movable groove 432 is formed between the two drive columns 431, allowing the connecting part 411 to move within it. The cleaning component 41 is provided with a guide column 412 that protrudes towards the heat collection cover 3. A roller 413 is connected to the guide column 412. The heat collection cover 3 is provided with a guide groove 44 that allows the roller 413 to move within it and guides the cleaning component 41 to reciprocate relative to the heat collection cover 3.

[0032] When the heating component 2 is heating, the cleaning component 4 is activated, and the drive motor 42 rotates. When the drive motor 42 rotates, it drives the output shaft 421 to rotate. When the output shaft 421 rotates, the rotating seat 43 connected to it rotates as well. When the rotating seat 43 rotates, it drives the two drive columns 431 to rotate. When the two drive columns 431 rotate, they push the connecting part 411 to move, thereby making the cleaning component 41 move relative to the heat collection cover 3. Due to the setting of the roller 413 and the movable groove 432, the cleaning component 41 moves back and forth relative to the heat collection cover 3. The outer wall of the cleaning component 41 contacts the heat collection cover 3 and gradually rubs against the inner wall of the heat collection cover 3, preventing scale from accumulating on the inner wall of the heat collection cover 3. Since the heating component 2 is confined within the heating area 31 of the heat collection cover 3, most of the scale will accumulate on the inner wall of the heat collection cover 3. The cleaning component 41 can automatically clean the inner wall of the heat collection cover 3, which has a good cleaning effect and can prevent scale accumulation, making it more convenient to use.

[0033] As shown in Figures 7 and 8, the guide groove 44 is rectangular in shape and has two horizontal grooves (upper and lower) and two vertical grooves (left and right). When the roller 413 is located in the right vertical groove, the two drive columns 431 rotate and push the connecting part 411 downward, causing the roller 413 to move downward along the vertical groove. At this time, the cleaning component 41 moves downward relative to the heat collection cover 3. When the roller 413 continues to move to the lower horizontal groove, the two drive columns 431 continue to rotate and push the connecting part 411 to move to the left, causing the roller 413 to move from right to left. At this time, the cleaning component 41 rotates clockwise relative to the heat collection cover 3 for a certain distance. When the roller 413 continues to move to the left vertical groove, the two drive columns 431 continue to rotate and push the connecting part 411 upward, causing the roller 413 to move upward from the lower horizontal groove. Moving upwards, the cleaning component 41 is reset relative to the heat collector 3. The two drive columns 431 rotate and push the connecting part 411 to move to the left. When the roller 413 moves along the horizontal groove on the upper side, the two drive columns 431 continue to rotate and push the connecting part 411 to move to the right, so that the roller 413 moves from left to right. At this time, the cleaning component 41 is reset relative to the heat collector 3 by rotating in the opposite direction. The guide groove 44 is rectangular, which facilitates the guidance of the cleaning component 41 to rotate horizontally relative to the heat collector 3 and move vertically relative to the heat collector 3. The distance that the cleaning component 41 rotates horizontally relative to the heat collector 3 is determined by the length of the horizontal groove, and the distance that the cleaning component 41 moves vertically relative to the heat collector 3 is determined by the length of the vertical groove. It is very convenient to use.

[0034] As shown in Figure 4, the heat collection cover 3 has an opening 35, and a connecting plate 36 is connected to the outer side of the heat collection cover 3. A guide groove 44 is formed between the peripheral side of the connecting plate 36 and the wall of the opening 35. The connecting plate 36 can fix the roller 413, making the roller 413 more stable when moving.

[0035] As shown in Figure 5, the cleaning component 41 is arranged in a ring shape, and the outer surface 414 of the cleaning component 41 is a frosted surface. The frosted surface facilitates cleaning of the inner wall of the heat collection cover 3.

[0036] The cleaning component 41 is also provided with a clearance groove 45 that allows the output shaft 421 to move when it is moving relative to the heat collection cover 3. The cleaning component 41 is also provided with a through groove 415 that can communicate with the water inlet 32. The through groove 415 is used to connect the water inlet 32 ​​and increase the water inlet area.

[0037] As shown in Figure 10, the inner tank 1 of the water heater is also provided with an installation part 14. The heating component 2 is detachably connected to the installation part 14. The heating component 2 includes a base 21 connected to the installation part 14. The base 21 is provided with multiple heating tubes 22. The base 21 is also provided with a drain outlet 211 for draining water. A sealing cap 23 is connected to the drain outlet 211. After the cleaning component 4 is cleaned, scale will accumulate on the base 21 under the action of gravity. By opening the sealing cap 23, water carrying the scale will be discharged from the drain outlet 211, making drainage more convenient.

[0038] As shown in Figure 2, the heat collection cover 3 is also connected to an isolation plate 5 that divides the water storage chamber 11 into a hot water zone 111 and a mixing zone 112. The hot water zone 111 is located above the heat collection cover 3 and is connected to the outlet of the heating zone 31 of the heat collection cover 3. One end of the outlet pipe 12 is located in the hot water zone 111. The isolation plate 5 is provided with a through hole 51 that connects the hot water zone 111 and the mixing zone 112. The hot water flowing out of the heating zone 31 of the heat collection cover 3 can be directly discharged out through the outlet pipe 12 for use, making it more convenient to use. The hot water from the hot water zone 111 enters the mixing zone 112 through the through hole 51, causing the cold water in the mixing zone 112 to gradually heat up.

[0039] As shown in Figure 2, the partition plate 5 includes a first plate 52 and a second plate 53 arranged perpendicularly to each other. The first plate 52 is arranged horizontally, and the second plate 53 is connected to one side of the first plate 52 and extends vertically upward relative to the first plate 52. The edge of the second plate 53 is connected to the inner wall of the inner tank 1 of the water heater. The arrangement of the first plate 52 and the second plate 53 is used to divide the hot water zone 111 and the mixing zone 112. The water in the hot water zone 111 can flow directly out through the outlet pipe 12, allowing for quick access to hot water.

[0040] A gap is formed between the second plate 53 and the inner wall of the water heater inner tank 1, connecting the hot water zone 111 and the mixing zone 112. This accelerates the flow of hot water from the hot water zone 111 into the mixing zone 112.

[0041] As shown in Figure 2, the inlet pipe 13 extends from the mixing zone 112 to multiple inlets 32, and the outlet pipe 12 extends from the mixing zone 112 to the hot water zone 111. The inlet pipe 13 allows cold water to enter the inlets 32 more quickly.

[0042] As shown in Figure 2, a fan assembly 6 is connected to the inner tank 1 of the water heater on the side away from the outlet pipe 12 to accelerate water circulation. By accelerating the water flow, the heating efficiency is improved, and the fan assembly 6 can help hot and cold water mix more evenly in the inner tank, reduce the stratification of hot and cold water, and ensure a more consistent water temperature throughout the water heater.

[0043] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A water heater capable of removing limescale, characterized in that, include: A water heater inner tank (1) is provided with a water storage cavity (11). A water outlet pipe (12) and a water inlet pipe (13) are connected to the water heater inner tank (1) at intervals. A heating component (2) that can extend into the water storage cavity (11) is also connected to the water heater inner tank (1). A heat collection cover (3) is also connected inside the water heater inner tank (1). The heat collection cover (3) is placed outside the heating component (2), so that a heating zone (31) is formed inside the heat collection cover (3). Multiple water inlets (32) are provided on the side wall of the heat collection cover (3). A water outlet (33) is provided on the top of the heat collection cover (3). A cleaning component (4) that can clean its inner wall (34) is provided on the heat collection cover (3). The cleaning component (4) includes a cleaning part (41) that is movably connected inside the heat collection cover (3). An inclined plate is provided on the inner wall of the cleaning part (41). The connecting part (411) extends obliquely. A drive motor (42) is connected to the heat collection cover (3). A rotating seat (43) that follows the rotation of the output shaft (421) of the drive motor (42) is connected to the rotating seat (43). Two drive columns (431) are connected to the rotating seat (43). A movable groove (432) is formed between the two drive columns (431) to allow the connecting part (411) to move within it. A guide column (412) protrudes towards the heat collection cover (3) on the cleaning component (41). A roller (413) is connected to the guide column (412). A guide groove (44) is provided on the heat collection cover (3) to allow the roller (413) to move within it and to guide the cleaning component (41) to move back and forth relative to the heat collection cover (3).

2. The water heater capable of removing limescale according to claim 1, characterized in that, The guide groove (44) is rectangular.

3. The water heater capable of removing limescale according to claim 1 or 2, characterized in that, The heat collection cover (3) is provided with an opening (35), and a connecting plate (36) is connected to the outside of the heat collection cover (3). The guide groove (44) is formed between the peripheral side of the connecting plate (36) and the wall of the opening (35).

4. The water heater capable of removing limescale according to claim 1, characterized in that, The cleaning component (41) is arranged in a ring shape, and the outer side (414) of the cleaning component (41) is a frosted surface.

5. The water heater capable of removing limescale according to claim 1 or 4, characterized in that, The cleaning component (41) is also provided with a clearance groove (45) that can make way for the output shaft (421) when it moves relative to the heat collection cover (3). The cleaning component (41) is also provided with a through groove (415) that can communicate with the water inlet (32).

6. The scale-removable water heater according to claim 1, wherein The inner tank (1) of the water heater is also provided with an installation part (14), and the heating component (2) is detachably connected to the installation part (14). The heating component (2) includes a base (21) connected to the installation part (14), and the base (21) is provided with a plurality of heating tubes (22). The base (21) is also provided with a drain outlet (211) that can drain water, and a sealing cap (23) is connected to the drain outlet (211).

7. The water heater capable of removing limescale according to claim 1, characterized in that, The heat collection cover (3) is also connected to an isolation plate (5) that can divide the water storage chamber (11) into a hot water zone (111) and a mixing water zone (112). The hot water zone (111) is located above the heat collection cover (3). The hot water zone (111) is connected to the outlet of the heating zone (31) of the heat collection cover (3). One end of the water outlet pipe (12) is located in the hot water zone (111). The isolation plate (5) is provided with a through hole (51) that can connect the hot water zone (111) and the mixing water zone (112).

8. The water heater capable of removing limescale according to claim 7, characterized in that, The isolation plate (5) includes a first plate (52) and a second plate (53) arranged perpendicularly to each other. The first plate (52) is arranged horizontally, and the second plate (53) is connected to one side of the first plate (52) and extends vertically upward relative to the first plate (52). The edge of the second plate (53) is connected to the inner wall of the inner tank (1) of the water heater.

9. The scale-removable water heater according to claim 1, wherein The water inlet pipe (13) extends from the mixing zone (112) to multiple water inlets (32), and the water outlet pipe (12) extends from the mixing zone (112) to the hot water zone (111).

10. The scale-removable water heater according to claim 1, wherein A fan assembly (6) capable of accelerating water circulation is connected to the inner tank (1) of the water heater on the side away from the outlet pipe (12).