A structure of an instant water heater including a heat exchange start-up device
By employing an automatic water flow channel with a bimetallic strip and slider structure in the instant water heater, combined with the high thermal conductivity of copper pipes, a dual heat exchange structure for preheating and heating is formed, solving the problems of high energy consumption and low heat exchange efficiency in instant water heaters, and achieving efficient heating and heat retention.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WEIHAI HENGDIAN TECHNOLOGY DEVELOPMENT CO LTD
- Filing Date
- 2025-07-22
- Publication Date
- 2026-06-02
AI Technical Summary
Existing instant water heaters consume a lot of energy and have low heat exchange efficiency when heating cold water in a short time, which easily leads to heat loss and slow heating speed.
The system employs a bimetallic strip and slider structure in conjunction with heat pipes and preheating pipes to form a dual heat exchange structure for preheating and heating. The water flow channel is automatically adjusted by the temperature change of the bimetallic strip, and the high thermal conductivity of the copper pipes improves heat exchange efficiency and reduces heat loss.
It improves heat exchange efficiency, reduces energy consumption, accelerates heating speed, reduces heat loss, and extends service life.
Smart Images
Figure CN224316399U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of instant water heater structure, specifically an instant water heater structure including a heat exchange start-up device. Background Technology
[0002] An instantaneous water heater is a type of water heater that heats water instantly as it flows through the heating element without requiring pre-storage. It features instant hot water, no waiting time, and a small footprint, meeting users' immediate hot water needs and finding widespread use in homes, hotels, public bathrooms, and other places.
[0003] Existing instant water heaters have some problems in actual use. On the one hand, because they need to heat cold water to the set temperature in a short time, they often require heating elements with large power, which not only increases energy consumption but also puts a heavy burden on the power grid. On the other hand, the heat exchange efficiency of existing instant water heaters is relatively low, and heat loss is likely to occur during the heating process, resulting in heat waste and slow heating speed. Summary of the Invention
[0004] The purpose of this invention is to provide an instant water heater structure with a heat exchange start-up device, which improves heat exchange efficiency and reduces energy consumption.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An instant water heater structure with a heat exchange start-up device is provided, including a rear shell. A mounting bracket is fixedly connected to the inner wall of the rear shell. A heat insulation cover is fixedly connected to the mounting bracket by bolts. A sleeve is provided inside the heat insulation cover. A heating base is fixedly connected to the top of the sleeve. Two heating rods are fixedly connected to the bottom of the heating base. A sliding groove is formed inside the outer wall of the sleeve. A communicating hole is formed inside the sliding groove. A bimetallic strip is fixedly connected to the top of the inner wall of the sliding groove. A slider is fixedly connected to the bottom of the bimetallic strip. The interior of the sleeve has a flow guide port. The interior of the rear shell has a preheating plate and a preheating pipe. The outer wall of the preheating plate is fixedly connected to a support block, and there are multiple support blocks. The other end of each support block is fixedly connected to the inner wall of the rear shell. The outer wall of the sleeve is fixedly connected to a heat-conducting pipe. One end of the heat-conducting pipe passes through the heat insulation cover and is connected to the top left side of the preheating pipe. The interior of the preheating plate has a water inlet pipe. One end of the water inlet pipe passes through the heat insulation cover and is fixedly connected to the outer wall of the sleeve. The bottom of the rear shell is equipped with a water inlet, and the other end of the water inlet pipe is fixedly connected to the water inlet.
[0006] Optionally, a heat-conducting pipe cover is fixedly connected to the outer wall of the heat insulation cover, the bottom of the heat-conducting pipe cover is fixedly connected to the preheating plate, and the heat-conducting pipe is located inside the heat-conducting pipe cover.
[0007] Optionally, a water outlet is installed at the bottom of the rear housing, and a water outlet pipe is fixedly connected to the outer wall of the sleeve. One end of the water outlet pipe passes through the heat insulation cover and is fixedly connected to the water outlet.
[0008] Optionally, heat dissipation grooves are provided on both outer walls of the rear housing, and there are multiple heat dissipation grooves. Filter screens are fixedly connected to both sides of the inner wall of the rear housing, and the positions of the filter screens correspond to the positions of the multiple heat dissipation grooves.
[0009] Optionally, the outer walls on both sides of the rear housing are provided with connecting blocks, and there are multiple connecting blocks. The front housing is installed at the front end of the rear housing, and the front housing is fixedly connected to the multiple connecting blocks by bolts.
[0010] Optionally, a hook is provided on the rear side of the rear housing. The hook is L-shaped, the heat-conducting pipe is spiral-shaped, the water inlet pipe passes through the heat-conducting pipe, and both the preheating pipe and the heat-conducting pipe are made of copper.
[0011] Compared with the prior art, the present invention has the following beneficial effects:
[0012] 1. This utility model includes a rear shell, mounting bracket, heat insulation cover, sleeve, heating base, and heating rods. Two heating rods are used to enhance heating effect and accelerate heating speed. The sliding grooves and connecting holes inside the sleeve's outer wall, in conjunction with a bimetallic strip, slider, and guide port, automatically adjust the water flow channel according to temperature changes, achieving intelligent control of heat exchange startup. The preheating plate and preheating pipe inside the rear shell work together with the heat-conducting pipe and water inlet pipe on the sleeve's outer wall. Cold water enters through the inlet pipe, first passing through the preheating pipe for preheating using the heat transferred from the heat-conducting pipe, and then enters the sleeve for heating. This forms a dual heat exchange structure of preheating and heating, improving heat exchange efficiency, reducing energy consumption, and minimizing heat loss, resulting in more efficient hot water supply.
[0013] 2. The bottom of the heat-conducting pipe cover on the outer wall of the heat insulation cover of this utility model is fixed to the preheating plate, enclosing the heat-conducting pipe inside, which can protect the heat-conducting pipe, reduce heat loss, and further improve the efficiency of heat transfer; the heat dissipation grooves on both sides of the rear shell can promote air circulation and assist the heat dissipation of this utility model; the filter screen is used to block dust and other impurities from entering, ensuring the cleanliness of the inside of this utility model and extending its service life; the heat-conducting pipe is spiral-shaped, which increases the contact area with the preheating pipe and improves the heat exchange effect; the water inlet pipe runs through the heat-conducting pipe, and both the preheating pipe and the heat-conducting pipe are made of copper pipe. Copper pipe has good thermal conductivity, which further enhances heat transfer, makes heat exchange more complete, and improves the performance of this utility model. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a first-view overall structural diagram of the present invention;
[0016] Figure 2 This is a schematic diagram of the overall structure of the present invention from a second perspective;
[0017] Figure 3 This is a schematic diagram of the interior of the rear shell of this utility model;
[0018] Figure 4 This is a schematic diagram showing the distribution structure of the heat insulation cover, heat conduction pipe cover, and preheating plate of this utility model;
[0019] Figure 5 This is a schematic diagram of the internal structure of the present invention;
[0020] Figure 6 This utility model Figure 5 Enlarged structural diagram at point A;
[0021] Figure 7 This is a schematic diagram of the mounting bracket of this utility model;
[0022] Figure 8 This is a schematic diagram of the structure of the bimetallic strip and slider of this utility model;
[0023] Figure 9 This is a schematic diagram showing the connection status of the heat-conducting pipe and the preheating pipe of this utility model.
[0024] In the diagram: 1. Rear housing; 2. Mounting bracket; 3. Heat insulation cover; 4. Sleeve; 5. Heating base; 6. Heating rod; 7. Slide groove; 8. Connecting hole; 9. Bimetallic strip; 10. Slider; 11. Flow guide port; 12. Preheating plate; 13. Preheating pipe; 14. Support block; 15. Heat conduction pipe; 16. Water inlet pipe; 17. Water inlet; 18. Heat conduction pipe cover; 19. Water outlet; 20. Water outlet pipe; 21. Heat dissipation groove; 22. Filter screen; 23. Connecting block; 24. Front housing; 25. Hook. Detailed Implementation
[0025] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0026] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.
[0027] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.
[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0029] Reference Figure 1-9This invention provides a description of an instant water heater structure with a heat exchange start-up device. The instant water heater structure includes a rear shell 1. A mounting bracket 2 is fixedly connected to the inner wall of the rear shell 1. A heat insulation cover 3 is fixedly connected to the mounting bracket 2 by bolts. A sleeve 4 is provided inside the heat insulation cover 3. A heating seat 5 is fixedly connected to the top of the sleeve 4. Two heating rods 6 are fixedly connected to the bottom of the heating seat 5. A groove 7 is formed inside the outer wall of the sleeve 4. A connecting hole 8 is formed inside the groove 7. A bimetallic strip 9 is fixedly connected to the top of the inner wall of the groove 7. The bimetallic strip 9 uses a combination of brass as the active layer and Invar alloy as the passive layer. Brass has a high coefficient of thermal expansion, allowing it to deform rapidly with temperature changes. The extremely low coefficient of expansion of Invar alloy ensures that the bimetallic strip 9 maintains a stable folded state at low temperatures. The strong expansion of the active layer after heating causes the bimetallic strip 9 to extend to a straight state, thereby precisely controlling the water flow and enabling the bimetallic strip 9 to extend and push the slider 10. During the downward movement and contraction process that causes the slider 10 to move upward, the bottom of the bimetallic strip 9 is fixedly connected to the slider 10. The slider 10 has a flow guide port 11 inside. The interior of the rear housing 1 is provided with a preheating plate 12, and the interior of the preheating plate 12 is provided with a preheating pipe 13. The outer wall of the preheating plate 12 is fixedly connected with a support block 14, and there are multiple support blocks 14. The other end of each of the multiple support blocks 14 is fixedly connected to the inner wall of the rear housing 1. The outer wall of the sleeve 4 is fixedly connected with a heat-conducting pipe. 15. The heat pipe 15 is spiral in shape. One end of the heat pipe 15 passes through the heat insulation cover 3 and is connected to the top left side of the preheating pipe 13. The preheating plate 12 is provided with a water inlet pipe 16, which passes through the heat pipe 15. Both the preheating pipe 13 and the heat pipe 15 are made of copper pipe. One end of the water inlet pipe 16 passes through the heat insulation cover 3 and is fixedly connected to the outer wall of the sleeve 4. A water inlet 17 is installed at the bottom of the rear shell 1, and the other end of the water inlet pipe 16 is fixedly connected to the water inlet 17.
[0030] In operation, cold water flows in from the inlet 17 at the bottom of the rear housing 1 through the inlet pipe 16. The inlet pipe 16 passes through a spiral heat-conducting pipe 15, absorbing the heat transferred from the sleeve 4 by the heat-conducting pipe 15 to achieve initial preheating. The preheating pipe 13 is also located inside the preheating plate 12, absorbing the heat from the heat-conducting pipe 15 to further preheat the cold water. After preheating, the water enters the sleeve 4 through the inlet pipe 16. The two heating rods 6 on the heating seat 5 at the top of the sleeve 4 are energized to heat the water. In the initial state, when the water temperature has not reached the set value, the bimetallic strip 9 is folded, and the guide port 11 is partially connected to the connecting hole 8. Because the guide port 11 in the slider 10 is staggered from the connecting hole 8, but partially intersecting, the water flows through the preheating pipe 13 and then enters the sleeve 4. The flow rate is relatively small, ensuring that a small amount of water can pass through in the initial state. The bimetallic strip 9 in the groove 7 on the outer wall of the sleeve 4 extends downward due to the increase in temperature, thereby driving the slider 10 to move downward. At this time, the water inside the sleeve 4 has been fully heated. The guide port 11 in the slider 10 is completely aligned with the connecting hole 8, and the water flow rate increases, realizing the regulation of water flow. The heated water flows out from the outlet 19 through the outlet pipe 20. The heat dissipation grooves 21 and filter screens 22 on both sides of the rear housing 1 are used for heat dissipation and dust prevention. The heat insulation cover 3 and the heat conduction pipe cover 18 reduce heat loss. The rear housing 1 is fixed to the front housing 24 by the connecting block 23. The L-shaped hook 25 on the rear side is used to hang this utility model on the wall. The preheating pipe 13 and the heat conduction pipe 15 are made of copper pipe, which can improve the heat conduction efficiency.
[0031] In another embodiment of this utility model, please refer to Figure 5 A heat-conducting pipe cover 18 is fixedly connected to the outer wall of the heat insulation cover 3. The bottom of the heat-conducting pipe cover 18 is fixedly connected to the preheating plate 12. The heat-conducting pipe 15 is located inside the heat-conducting pipe cover 18. The bottom of the heat-conducting pipe cover 18 on the outer wall of the heat insulation cover 3 is fixed to the preheating plate 12, which wraps the heat-conducting pipe 15 inside, which can protect the heat-conducting pipe 15, reduce heat loss, and further improve the efficiency of heat transfer.
[0032] In another embodiment of this utility model, please refer to Figure 3 The bottom of the rear housing 1 is equipped with a water outlet 19, and the outer wall of the sleeve 4 is fixedly connected with a water outlet pipe 20. One end of the water outlet pipe 20 passes through the heat insulation cover 3 and is fixedly connected to the water outlet 19.
[0033] In another embodiment of this utility model, please refer to Figure 3 The outer walls on both sides of the rear housing 1 are provided with heat dissipation grooves 21, and there are multiple heat dissipation grooves 21. Filter screens 22 are fixedly connected to both sides of the inner wall of the rear housing 1. The positions of the heat dissipation grooves 21 on both sides of the rear housing 1 and the filter screens 22 on the inner wall correspond to the positions of the multiple heat dissipation grooves 21. The heat dissipation grooves 21 can promote air circulation and assist the heat dissipation of this utility model. The filter screens 22 are used to block dust and other impurities from entering, ensuring the cleanliness of the inside of this utility model and extending its service life.
[0034] In another embodiment of this utility model, please refer to Figure 2 The rear housing 1 has connecting blocks 23 on both outer walls, and there are multiple connecting blocks 23. The front housing 24 is installed at the front end of the rear housing 1. The front housing 24 is fixedly connected to multiple connecting blocks 23 by bolts. The rear side of the rear housing 1 has a hook 25. The hook 25 is L-shaped, which makes it convenient to hang this utility model on the wall.
[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A structure of instant water heater with heat exchange starting device, comprising a rear shell (1), characterized in that: A mounting bracket (2) is fixedly connected to the inner wall of the rear housing (1). A heat insulation cover (3) is fixedly connected to the mounting bracket (2) by bolts. A sleeve (4) is provided inside the heat insulation cover (3). A heating seat (5) is fixedly connected to the top of the sleeve (4). A heating rod (6) is fixedly connected to the bottom of the heating seat (5). There are two heating rods (6). A sliding groove (7) is opened inside the outer wall of the sleeve (4). A connecting hole (8) is opened inside the sliding groove (7). A bimetallic strip (9) is fixedly connected to the top of the inner wall of the sliding groove (7). A slider (10) is fixedly connected to the bottom of the bimetallic strip (9). A guide port (11) is opened inside the slider (10). A preheating plate (12) is provided inside the rear housing (1). The preheating plate (12) is provided with a preheating pipe (13) inside. The outer wall of the preheating plate (12) is fixedly connected with a support block (14), and there are multiple support blocks (14). The other end of each of the multiple support blocks (14) is fixedly connected to the inner wall of the rear shell (1). The outer wall of the sleeve (4) is fixedly connected with a heat-conducting pipe (15). One end of the heat-conducting pipe (15) passes through the heat insulation cover (3) and is connected to the top left side of the preheating pipe (13). The preheating plate (12) is provided with a water inlet pipe (16). One end of the water inlet pipe (16) passes through the heat insulation cover (3) and is fixedly connected to the outer wall of the sleeve (4). The bottom of the rear shell (1) is equipped with a water inlet (17), and the other end of the water inlet pipe (16) is fixedly connected to the water inlet (17).
2. The instant water heater structure with heat exchange starting device according to claim 1, characterized in that: The outer wall of the heat insulation cover (3) is fixedly connected to a heat-conducting pipe cover (18), the bottom of the heat-conducting pipe cover (18) is fixedly connected to the preheating plate (12), and the heat-conducting pipe (15) is located inside the heat-conducting pipe cover (18).
3. The instant water heater structure with heat exchange starting device according to claim 1, characterized in that: The bottom of the rear housing (1) is equipped with a water outlet (19), and the outer wall of the sleeve (4) is fixedly connected with a water outlet pipe (20). One end of the water outlet pipe (20) passes through the heat insulation cover (3) and is fixedly connected to the water outlet (19).
4. The instant water heater structure with heat exchange starting device according to claim 1, characterized in that: The outer walls of the rear housing (1) are provided with heat dissipation grooves (21), and there are multiple heat dissipation grooves (21). Filter screens (22) are fixedly connected to the inner walls of the rear housing (1), and the positions of the filter screens (22) correspond to the positions of the multiple heat dissipation grooves (21).
5. The instant water heater structure with a heat exchange start-up device as described in claim 1, characterized in that: The rear housing (1) has connecting blocks (23) on both outer walls, and there are multiple connecting blocks (23). The front housing (24) is installed at the front end of the rear housing (1), and the front housing (24) is fixedly connected to multiple connecting blocks (23) by bolts.
6. The instant water heater structure with a heat exchange start-up device as described in claim 1, characterized in that: The rear shell (1) is provided with a hook (25) on the rear side. The hook (25) is L-shaped. The heat pipe (15) is spiral. The water inlet pipe (16) passes through the heat pipe (15). Both the preheating pipe (13) and the heat pipe (15) are made of copper.