Water heating device
By innovating the layout of the annular heating element and heat-conducting pipe, combined with the spiral winding and horizontal rib design, the water flow path is optimized, solving the problem of low heat exchange efficiency in instantaneous heating devices and achieving efficient and safe water heating.
Patent Information
- Application Number
- CN202520064184.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-11
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-01-11
AI Technical Summary
Existing instantaneous heating devices have low convective heat transfer efficiency, resulting in high heating element power, high circuit heat dissipation requirements, or potential safety hazards, and are greatly affected by weather.
It adopts a ring-shaped heating element and heat pipe structure. The ring-shaped heating element forms a ring-shaped cavity, and the heat pipe is set in the cavity. The heat pipe is heated by the electric heating element. Combined with the spiral winding and horizontal rib design, the heat transfer efficiency is improved. The water flow and heat utilization are optimized by using a water inlet rectifier and insulation layer.
It improves energy utilization and convective heat transfer efficiency, reduces energy loss, achieves more efficient water heating, and at the same time reduces the heat dissipation requirements of the circuit and safety hazards.
Smart Images
Figure CN223855857U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to water heating field especially relates to a water heating device. BACKGROUND
[0002] In order to realize instant heating function, current instant heating type heating device adopts resistance heating mode, utilizes heat conduction between solids and convection heat exchange between solid and liquid to realize instant heating function of water, due to low heat conduction between solids and convection heat exchange between solid and fluid, to meet instant heating type water heating function, the power of heating body is larger, and higher requirement is simultaneously put forward to heat dissipation and load capacity of circuit. Or, through gas combustion, water in pipeline is heated to realize instant heating function, but gas type water heating device has hidden danger and pollutes environment, and simultaneously has higher requirement to installation condition. Or, through solar energy and the principle of water stratification of different temperature, water is heated, but water heating device using solar energy is greatly influenced by weather, and relevant equipment needs larger volume and arrangement site. Therefore, instant heating type heating device of whichever mode has some problems.
[0003] In order to solve the problem of low convection heat exchange efficiency of current instant heating type heating device, the utility model provides a water heating device. UTILITY MODEL CONTENTS
[0004] The utility model solves the technical problem to overcome the defect of low convection heat exchange efficiency in prior art and provides a water heating device.
[0005] The utility model solves the above technical problem through the following technical scheme:
[0006] The utility model provides a water heating device, it includes electric heating sheet and a plurality of heat pipe, the electric heating sheet includes a plurality of annular heating sheet of different diameters, a plurality of annular heating sheet is placed along the same axial direction, forms annular cavity between adjacent two annular heating sheet, a plurality of heat pipe is arranged in the annular cavity, water flows from the heat pipe, the electric heating sheet is used to heat the water flow in the heat pipe under the electrified state.
[0007] In the scheme, annular heating sheet and heat pipe constitute the main component of water heating device. On the one hand, through annular arrangement of electric heating sheet and form annular cavity, set up heat pipe between every two electric heating sheets, make the heat of electric heating sheet can heat the heat pipe on both sides of electric heating sheet simultaneously, can reduce energy loss, improve energy utilization efficiency. On the other hand, through a plurality of heat pipe setting on both sides of electric heating sheet, can improve the utilization of electric heating sheet, thereby improve the convection heat exchange efficiency.
[0008] Preferably, the electric heating sheet further comprises a rod-shaped heating sheet arranged at the axial center of the annular heating sheet, and the annular cavity is formed between the rod-shaped heating sheet and the annular heating sheet with the smallest diameter, and a plurality of the heat conducting pipes are arranged in the annular cavity.
[0009] In this scheme, by arranging a rod-shaped heating sheet at the axial center of the annular heating sheet, an annular cavity is formed between the rod-shaped heating sheet and the annular heating sheet with the smallest diameter, and the heat conducting pipes are arranged in the annular cavity, thereby increasing the utilization rate of the annular heating sheet and preventing space waste.
[0010] Preferably, a plurality of the heat conducting pipes are uniformly arranged in each of the annular cavities.
[0011] In this scheme, by uniformly arranging a plurality of heat conducting pipes in the annular cavities, the annular heating sheet can heat a plurality of heat conducting pipes at the same time, thereby further improving the utilization rate of the electric heating sheet and increasing the efficiency of convective heat exchange.
[0012] Preferably, the heat conducting pipes are closely attached to the annular heating sheet, and the surface of the heat conducting pipes facing the annular heating sheet has an arc shape that closely matches the two sides of the annular heating sheet.
[0013] In this scheme, by closely attaching the heat conducting pipes to the annular heating sheet and arranging the part of the heat conducting pipes in contact with the annular heating sheet into an arc shape that closely matches the surface of the annular heating sheet, the contact area between the heat conducting pipes and the annular heating sheet is further increased, thereby improving the efficiency of convective heat exchange.
[0014] Preferably, the heat conducting pipes are spirally wound on the electric heating sheet.
[0015] In this scheme, by spirally winding the heat conducting pipes on the electric heating sheet, the length of the heat conducting pipes is increased, thereby increasing the heating time of the water flow in the pipes and improving the overall heating efficiency.
[0016] Preferably, a horizontal rib is arranged inside the heat conducting pipe, and the horizontal rib extends from the inner surface of the heat conducting pipe to the center of the pipe in a direction perpendicular to the pipe channel of the heat conducting pipe.
[0017] In this scheme, by arranging a horizontal rib inside the heat conducting pipe, the inner surface of the heat conducting pipe forms a concave-convex shape, and the water flow is disturbed when passing through the heat conducting pipe. This disturbance causes the path of the water flow to change, thereby forming a longitudinal vortex. The longitudinal vortex can enhance the mixing of the fluid and increase the contact area between the fluid and the inner wall of the pipe, thereby improving the heat transfer efficiency and enhancing the heating efficiency.
[0018] Preferably, the horizontal ribs are arranged at fixed intervals in the direction of the pipe channel inside the heat conducting pipe.
[0019] In the scheme, by setting the transverse ribs in every other fixed interval, longitudinal vortex can be formed periodically, which helps to enhance the turbulence degree and mixing efficiency of the fluid, so as to improve the contact between the fluid and the pipe wall, increase the heat exchange efficiency, thin the thermal boundary layer, realize more uniform temperature distribution, and further improve the overall heating efficiency and fluid mixing effect.
[0020] Preferably, the water heating device further comprises a water inlet rectifier, which is a cylindrical cavity with a water inlet, and the cavity bottom of the water inlet rectifier is provided with uniformly distributed rectifier holes connected with the heat conducting pipes.
[0021] In the scheme, the water flow is divided into multiple water flows through the rectifier holes of the water inlet rectifier, and the water flow enters the heat conducting pipes at a low speed when passing through the rectifier holes, so that the speed of the multiple water flows entering the heat conducting pipes between the annular heating sheets is reduced, the water heating time is prolonged, and the heating effect is improved.
[0022] Preferably, the rectifier holes and the heat conducting pipes have the same shape in cross section, and the rectifier holes and the heat conducting pipes are one-to-one corresponding.
[0023] In the scheme, by making the rectifier holes and the heat conducting pipes have the same shape in cross section, and the rectifier holes and the heat conducting pipes are one-to-one corresponding, the water flow can be fully dispersed to ensure that the water flow enters the heat conducting pipes at a low speed, the heating time is prolonged, and the heating efficiency is improved.
[0024] Preferably, the water heating device further comprises a heat preservation layer covering the outer surface of the outermost placed electric heating sheet, for locking the heat generated by the electric heating sheet inside the heat preservation layer.
[0025] In the scheme, the heat generated by the electric heating sheet is locked inside the heat preservation layer, which plays a role of protecting the external machine and improving the energy utilization efficiency.
[0026] The positive progress effect of the utility model lies in:
[0027] The water heating device of the utility model, the annular heating sheet and the heat conducting pipe constitute the main components of the water heating device. BRIEF DESCRIPTION OF DRAWINGS
[0028] Figure 1 The structure diagram of the water heating device of the utility model embodiment
[0029] Figure 2 This is a schematic cross-sectional view of the water heating device according to an embodiment of the present invention.
[0030] Figure 3 This is a schematic diagram of the cross-sectional structure of the heat-conducting pipe of the water heating device according to an embodiment of the present invention.
[0031] Explanation of reference numerals in the attached figures:
[0032] Water heating device 100
[0033] Electric heating element 1
[0034] Heat pipe 2
[0035] Annular cavity 3
[0036] Transverse Rib 4
[0037] Inlet rectifier 5
[0038] Rectifier port 6
[0039] Water outlet manifold 7
[0040] Manifold 8
[0041] Insulation layer 9
[0042] Inlet 10
[0043] Outlet 11
[0044] 12 ring heating elements
[0045] Rod-shaped heating element 13 Detailed Implementation
[0046] The present invention will be further described below by way of embodiments, but the present invention is not limited to the scope of the embodiments.
[0047] This embodiment provides a water heating device 100, such as Figure 1 As shown, the water heating device 100 includes an inlet 10, an outlet 11, four electric heating elements 1, and a heat-conducting pipe 2. The heat-conducting pipe 2 is a copper pipe, and the electric heating elements 1 are resistance heaters. Figure 2 As shown, three electric heating elements 1 are annular heating elements 12 with different diameters, and one electric heating element 1 is a rod-shaped heating element 13. The three annular electric heating elements 1 are placed sequentially along the same axis with the rod-shaped heating element 13 as the center, according to their diameters. Three annular cavities 3 are formed between two adjacent electric heating elements 1. The heat conduction pipe 2 is placed in the annular cavity 3 along the electric heating elements 1. Water flows through the heat conduction pipe 2. The electric heating elements 1 are used to heat the water flow in the heat conduction pipe 2 when energized.
[0048] Thus, the annular heating sheet 12 and the heat conducting pipe 2 constitute the main components of the water heating device 100. On the one hand, the annular heating sheet 1 is arranged in a ring shape to form the annular cavity 3, and the heat conducting pipe 2 is arranged between every two annular heating sheets 1, so that the heat generated by the annular heating sheet 1 can heat the heat conducting pipe 2 on both sides of the annular heating sheet 1 at the same time, which can reduce energy loss and improve energy utilization efficiency. On the other hand, the heat conducting pipe 2 is arranged on both sides of the annular heating sheet 1, which can improve the utilization rate of the annular heating sheet 1, thereby improving the convective heat transfer efficiency. By arranging the rod-shaped heating sheet 13 at the axial center of the annular heating sheet 12, an annular cavity 3 is formed between the rod-shaped heating sheet 13 and the annular heating sheet 12 with the smallest diameter, which can increase the arrangement of the heat conducting pipe 2 and improve the utilization rate of the annular heating sheet 12, thereby preventing space waste.
[0049] Specifically, the heat conducting pipe 2 is 24, and 12 heat conducting pipes 2 are evenly arranged in the outermost annular cavity 3, and 6 heat conducting pipes 2 are evenly arranged in each of the two inner annular cavities 3. In other embodiments, those skilled in the art can also select other arrangement modes of the heat conducting pipe 2.
[0050] Thus, by evenly distributing a plurality of heat conducting pipes 2 in the annular cavity 3, the annular heating sheet 12 can heat a plurality of heat conducting pipes 2 at the same time, further improving the utilization rate of the annular heating sheet 1, thereby improving the convective heat transfer efficiency.
[0051] Specifically, the heat conducting pipe 2 is tightly attached between adjacent annular heating sheets 1, and the surface of the heat conducting pipe 2 towards the annular heating sheet 1 has an arc shape that fits both sides of the annular heating sheet 1. Preferably, the cross-sectional shape of the heat conducting pipe 2 is oval, the oval surface of the heat conducting pipe 2 close to the inner annular heating sheet 1 is concave inward, and the concave area has a smaller radius of curvature; the oval surface of the heat conducting pipe 2 close to the outer annular heating sheet is flat, and the flat area has a larger radius of curvature. In other embodiments, those skilled in the art can also select other cross-sectional shapes of the heat conducting pipe 2 that fit the surface of the annular heating sheet 1.
[0052] Thus, by tightly attaching the heat conducting pipe 2 to the annular heating sheet 12, and arranging the part of the heat conducting pipe 2 in contact with the annular heating sheet 12 to fit the arc of the annular surface, the contact area between the heat conducting pipe 2 and the annular heating sheet 12 is further increased, thereby improving the convective heat transfer efficiency.
[0053] Specifically, the heat conducting pipe 2 is wound in a spiral form on the annular heating sheet 1. The turns of the heat conducting pipe 2 wound in a spiral form can be tightly attached or have gaps. Preferably, the turns of the heat conducting pipe 2 are tightly attached.
[0054] Thus, by winding the heat conducting pipe 2 in a spiral form on the annular heating sheet 1, the length of the heat conducting pipe 2 is increased, thereby increasing the heating time of the water flow in the pipe, and improving the overall heating efficiency.
[0055] Specifically, such as Figure 3 As shown, transverse ribs 4 are provided inside the heat pipe 2. The transverse ribs 4 extend inward from the inner surface of the heat pipe 2 along a direction perpendicular to the pipe channel of the heat pipe 2, and are provided at fixed intervals along the pipe channel direction inside the heat pipe 2. In other embodiments, those skilled in the art may also choose other blunt bodies with different structures.
[0056] Therefore, by setting transverse ribs 4 inside the heat pipe 2, an uneven surface is formed on the inner surface of the heat pipe 2, which disturbs the water flow. This disturbance causes the water flow path to change, thereby forming longitudinal vortices. Longitudinal vortices can enhance fluid mixing and increase the contact area between the fluid and the inner wall of the pipe, thereby improving heat transfer efficiency and heating efficiency.
[0057] Specifically, the water heating device 100 also includes a water inlet rectifier 5, which is a cylindrical cavity. The top of the cavity of the water inlet rectifier 5 is connected to the water inlet 10, and the bottom of the cavity of the water inlet rectifier 5 has uniformly distributed rectification holes 6. The rectification holes 6 are connected to the heat conduction pipes 2. The rectification holes 6 and the heat conduction pipes 2 have the same elliptical shape in cross section, and each heat conduction pipe 2 is connected to one rectification hole 6, so that the rectification holes 6 and the heat conduction pipes 2 correspond one-to-one.
[0058] Therefore, by setting transverse ribs 4 at every fixed interval, longitudinal vortices can be formed periodically, which helps to enhance the turbulence and mixing efficiency of the fluid, thereby improving the contact between the fluid and the pipe wall, increasing the heat exchange efficiency, thinning the thermal boundary layer, achieving a more uniform temperature distribution, and thus improving the overall heating efficiency and fluid mixing effect.
[0059] Specifically, the water heating device 100 also includes a water outlet manifold 7, which is a cylindrical cavity. The top of the cavity of the water outlet manifold 7 has evenly distributed manifold holes 8. The manifold holes 8 are connected to the heat conduction pipes 2. The cross-sections of the manifold holes 8 and the heat conduction pipes 2 have the same elliptical shape, and each heat conduction pipe 2 is connected to one manifold hole 8, so that the manifold holes 8 and the heat conduction pipes 2 correspond one-to-one. The bottom of the cavity of the water outlet manifold 7 is connected to the water outlet 11.
[0060] Therefore, the water flow is divided into multiple streams through the rectifier orifice 6 of the water inlet rectifier 5. As the water flows through the rectifier orifice 6, it enters the heat-conducting pipe 2 at a lower velocity. The reduced velocity of these multiple streams as they enter the heat-conducting pipe 2 between the annular heating elements 12 extends the heating time, thereby improving the heating effect. By ensuring that the rectifier orifice 6 and the heat-conducting pipe 2 have the same cross-sectional shape, and that the rectifier orifice 6 corresponds one-to-one with the heat-conducting pipe 2, the water flow can be fully dispersed, ensuring that the water enters the heat-conducting pipe 2 at a lower velocity, thus extending the heating time and improving heating efficiency.
[0061] Specifically, the water heating device 100 further comprises a heat preservation layer 9, which covers the outer surface of the outermost placed electric heating sheet 1, for locking the heat generated by the electric heating sheet 1 inside the heat preservation layer 9.
[0062] Thus, the heat generated by the electric heating sheet 1 is locked inside the heat preservation layer 9 by the heat preservation layer 9, which plays a role of protecting the external machine and improving the energy utilization efficiency.
[0063] The operation principle of the embodiment is as follows: when the water flow enters the water inlet rectifier 5, the water flow will be divided into multiple water flows with reduced speed under the action of the rectifying hole 6 and enter the heat conducting pipe 2 spirally wound on the annular heating sheet 12, form periodic longitudinal vortex under the action of the transverse rib 4 in the heat conducting pipe 2, and further reduce the flow rate and realize the mixing and heat exchange of cold and hot water, and after the heating is completed, the small water flow is mixed in the cavity of the water outlet collector 7 and then discharged from the water outlet 11.
[0064] Although the specific embodiments of the utility model are described above, those skilled in the art should understand that this is only an example, the protection scope of the utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the utility model, but these changes and modifications all fall within the protection scope of the utility model.
Claims
1. A water heating apparatus, characterized by, The water heating device comprises an electric heating sheet and a plurality of heat-conducting pipes, the electric heating sheet comprises a plurality of annular heating sheets with different diameters, the annular heating sheets are arranged along the same axis, and annular cavities are formed between two adjacent annular heating sheets, the heat-conducting pipes are arranged in the annular cavities, water flows through the heat-conducting pipes, and the electric heating sheet is used for heating the water flowing in the heat-conducting pipes in an energized state.
2. The water heating apparatus of claim 1, wherein, The electric heating sheet further comprises a rod-shaped heating sheet arranged at the axial center of the annular heating sheet, and the annular cavity is also formed between the rod-shaped heating sheet and the annular heating sheet with the smallest diameter, and the heat-conducting pipes are arranged in the annular cavity.
3. The water heating apparatus according to claim 1 or 2, wherein A plurality of heat-conducting pipes are uniformly arranged in each annular cavity.
4. The water heating device of claim 1, wherein, The heat-conducting pipes are closely attached to the annular heating sheets, and the surfaces of the heat-conducting pipes towards the annular heating sheets have an arc shape attached to both sides of the annular heating sheets.
5. The water heating device of claim 1, wherein, The heat-conducting pipes are spirally wound on the electric heating sheet.
6. The water heating device of claim 1, wherein, Horizontal ribs are arranged inside the heat-conducting pipes, and the horizontal ribs extend from the inner surface of the heat-conducting pipes to the center of the pipes in a direction perpendicular to the pipe channel of the heat-conducting pipes.
7. The water heating apparatus of claim 6, wherein The horizontal ribs are arranged at fixed intervals along the pipe channel direction in the heat-conducting pipes.
8. The water heating device of claim 1, wherein, The water heating device further comprises a water inlet rectifier, which is a cylindrical cavity with a water inlet, and the cavity bottom of the water inlet rectifier is provided with uniformly distributed rectifier holes connected to the heat-conducting pipes.
9. The water heating device of claim 8, wherein, The cross section of the rectifier hole and the heat-conducting pipe has the same shape, and the rectifier hole and the heat-conducting pipe correspond one by one.
10. The water heating device of claim 1, wherein, The water heating device further comprises a heat preservation layer covering the outer surface of the outermost electric heating sheet, which is used for locking the heat generated by the electric heating sheet inside the heat preservation layer.