Electric heating tube protection shell, electric heating device and water purifier comprising same

Abstract

This utility model provides a protective shell for an electric heating element, an electric heating device, and a water purifier including the same. The protective shell for the electric heating element includes two interlocking heat-conducting shells, which are respectively installed on both sides of the electric heating element to isolate it from the outside of the heat-conducting shells. The inner wall of the heat-conducting shells is in contact with the electric heating element. The two heat-conducting shells are detachably connected, and the heat-conducting shells are made of heat-conducting material. The electric heating device includes the aforementioned protective shell for the electric heating element. The water purifier includes the aforementioned protective device for the electric heating element. By covering the electric heating element with a heat-conducting shell, the electric heating element is isolated from the water outside the heat-conducting shell, thus achieving an indirect connection between the electric heating element and the water. This prevents scale from directly adhering to the heating element and causing it to crack, thereby extending the service life of the electric heating element and reducing the risk of damage caused by its cracking. Furthermore, the split design facilitates the replacement and cleaning of the heat-conducting shells.

Description

Technical Field

[0001] This utility model relates to the field of water purifiers, and in particular to an electric heating tube protective shell, an electric heating device, and a water purifier including the same. Background Technology

[0002] Commercial thermal storage water purification equipment generally uses immersion electric heating elements as heating components. This method has a simple structure; by directly immersing the electric heating element in the purified water in the storage tank, heat is transferred to the water using resistance wires, achieving rapid heating and heat preservation.

[0003] However, this method faces serious scale problems in long-term operation. Despite using purified water, the trace amounts of calcium and magnesium ions dissolved in it (mainly bicarbonates) will decompose into insoluble substances such as calcium carbonate and magnesium carbonate under the localized high temperature on the surface of the electric heating element. These precipitates adhere firmly to the surface of the heating element and continuously thicken and harden with repeated heating cycles, forming a dense heat insulation layer.

[0004] Scale buildup poses significant hazards: First, its poor thermal conductivity reduces heating efficiency and increases energy consumption. Second, scale hinders heat dissipation, causing localized high temperatures in the heating element, inducing thermal stress, and triggering under-scale electrochemical corrosion and ion erosion. This damages the crystal structure of the metal pipe, leading to pipe wall corrosion, reduced strength, and even rupture. Third, if the heating element ruptures, the internal charged components will come into contact with the water, inevitably causing an electrical short circuit, resulting in equipment tripping or failure, posing a serious safety hazard. Furthermore, it pollutes the water and significantly shortens the equipment's lifespan. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the defect in the prior art that scale easily adheres to the outer wall of the electric heating tube, causing damage to the electric heating tube, and to provide an electric heating tube protective shell, an electric heating device, and a water purifier including the same.

[0006] The present invention solves the above-mentioned technical problems through the following technical solution:

[0007] This utility model provides a protective shell for an electric heating tube, which is applied to a water purifier. The protective shell includes two interlocking heat-conducting shells. The two heat-conducting shells are respectively placed on the electric heating tube from both sides to isolate the electric heating tube from the outside of the heat-conducting shells. The inner wall of the heat-conducting shell is in contact with the electric heating tube. The two heat-conducting shells are detachably connected. The heat-conducting shells are made of heat-conducting material.

[0008] In this design, the protective outer shell of the electric heating element, through the aforementioned configuration, encloses the electric heating element in a heat-conducting shell, isolating the heating element from the water outside the shell. This achieves an indirect connection between the heating element and the water, preventing scale from directly adhering to the heating element and causing it to crack. This extends the service life of the heating element and reduces the risk of damage from its breakage. Furthermore, the split design facilitates the replacement and cleaning of the heat-conducting shell.

[0009] Preferably, at least one of the heat-conducting housings is provided with a plurality of heat dissipation fins on the outward side.

[0010] In this design, the contact area between the heat-conducting shell and the external water body is increased by setting heat dissipation fins, which increases the heat dissipation area and thus improves the heat conduction efficiency of the heat-conducting shell.

[0011] Preferably, the heat dissipation fins are arranged at equal intervals.

[0012] In this design, the heat dissipation fins are spaced at equal intervals, which makes the heat conduction of the heat-conducting shell more uniform, thereby improving the heating effect.

[0013] Preferably, a groove is provided on the surface of at least one of the heat-conducting housings that contacts the electric heating tube, the shape of the groove matching the outer contour of the electric heating tube, the groove being for placing the electric heating tube.

[0014] In this solution, by matching the shape of the groove with the outer contour of the electric heating tube, the inner wall of the heat-conducting shell fits the electric heating tube more closely when it is placed inside the heat-conducting shell, and interference between the electric heating tube and the heat-conducting shell is also avoided.

[0015] Preferably, both of the heat-conducting housings are provided with a plurality of connection holes, which do not intersect with the groove, and the connection holes are used for screws to pass through.

[0016] In this solution, the above structure enables detachable connection and ensures that the screw connection will not cross the electric heating tube, reducing the risk of reduced overall structural strength of the heat-conducting shell due to the presence of connection holes.

[0017] Preferably, one of the heat-conducting housings is provided with a countersunk hole, and the connecting hole is disposed in the countersunk hole.

[0018] In this solution, countersunk holes are used to hide the nuts of the screws in the connection holes, thereby improving the overall aesthetics of the protective casing of the electric heating element.

[0019] This utility model also provides an electric heating device, which includes the above-described electric heating tube protective shell.

[0020] In this design, the protective outer shell of the electric heating element, through the aforementioned configuration, encloses the electric heating element in a heat-conducting shell, isolating the heating element from the water outside the shell. This achieves an indirect connection between the heating element and the water, preventing scale from directly adhering to the heating element and causing it to crack. This extends the service life of the heating element and reduces the risk of damage from its breakage. Furthermore, the split design facilitates the replacement and cleaning of the heat-conducting shell.

[0021] Preferably, the electric heating device further includes an electric heating tube, which includes a tube body and an energizing port disposed at the end of the tube body. The energizing port is used to provide power to the electric heating tube. The energizing port extends out of the heat-conducting housing. The energizing port includes a boss that extends radially from the energizing port. The surface of the boss facing the heat-conducting housing is in close contact with the outer wall surface of the heat-conducting housing.

[0022] In this design, the heating element is fixed in place by using a boss to hold the outer wall of the heat sink, thus preventing it from shaking and improving the stability of the electric heating element within the heat-conducting housing.

[0023] Preferably, the power port further includes a thread arranged along the axial direction of the tube body and a nut that mates with the thread, and a sealing element is provided between the nut and the boss.

[0024] In this solution, a seal is installed to prevent water leakage at the connection between the electric heating element and the external electrical components, thereby reducing the risk of short circuits caused by water leakage.

[0025] This utility model also provides a water purifier, which includes the electric heating device as described above.

[0026] In this design, the protective outer shell of the electric heating element, through the aforementioned configuration, encloses the electric heating element in a heat-conducting shell, isolating the heating element from the water outside the shell. This achieves an indirect connection between the heating element and the water, preventing scale from directly adhering to the heating element and causing it to crack. This extends the service life of the heating element and reduces the risk of damage from its breakage. Furthermore, the split design facilitates the replacement and cleaning of the heat-conducting shell.

[0027] The positive and progressive effects of this utility model are as follows:

[0028] This utility model provides an electric heating element protective shell, an electric heating device, and a water purifier including the same. The electric heating element protective shell, through the aforementioned design, encloses the electric heating element in a heat-conducting shell, isolating the electric heating element from the water outside the heat-conducting shell. This achieves an indirect connection between the electric heating element and the water, preventing scale from directly adhering to the heating element and causing it to crack, thereby extending the service life of the electric heating element and reducing the risk of damage caused by its breakage. Furthermore, the split design facilitates the replacement and cleaning of the heat-conducting shell. Attached Figure Description

[0029] Figure 1 This is an assembly diagram of the protective shell for the electric heating tube according to an embodiment of the present invention.

[0030] Figure 2 This is an exploded view of the protective shell of the electric heating tube according to an embodiment of the present invention.

[0031] Figure 3 This is a partial cross-sectional view of the protective shell for the electric heating tube according to an embodiment of the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] Thermal housing 1

[0034] Electric heating element 2

[0035] Heat sink fins 3

[0036] Groove 4

[0037] Connection hole 5

[0038] Countersunk Hole 6

[0039] Power port 7

[0040] 8 protrusions

[0041] Seal 9 Detailed Implementation

[0042] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0043] like Figures 1 to 3 As shown, this embodiment provides a protective housing for an electric heating element, which is applied to a water purifier. The protective housing includes two interlocking heat-conducting shells 1. The two heat-conducting shells 1 have the same shape as the electric heating element 2, such as... Figure 1 and Figure 2As shown, in this embodiment, both the heat-conducting shell 1 and the electric heating tube 2 are U-shaped. Two heat-conducting shells 1 are respectively installed on both sides of the electric heating tube 2, forming a sealed chamber inside to isolate the electric heating tube 2 from the outside of the heat-conducting shell 1. The inner wall of the heat-conducting shell 1 is in contact with the electric heating tube 2. The two heat-conducting shells 1 are detachably connected. The heat-conducting shell 1 is made of a heat-conducting material, preferably aluminum, but in other embodiments it can also be made of a heat-conducting material such as copper.

[0044] Thus, the protective outer shell of the electric heating element, through the aforementioned design, encloses the electric heating element 2 in a heat-conducting shell 1, isolating the electric heating element 2 from the water outside the heat-conducting shell 1. This achieves an indirect connection between the electric heating element 2 and the water, preventing scale from directly adhering to the heating element and causing it to crack, thereby extending the service life of the electric heating element 2 and reducing the risk of damage caused by its cracking. Furthermore, the split design facilitates the replacement and cleaning of the heat-conducting shell.

[0045] Specifically, such as Figure 1 and Figure 2 As shown, a plurality of heat dissipation fins 3 may be provided on one or two outward-facing sides of the heat-conducting housing 1. Preferably, heat dissipation fins 3 are provided on both outward-facing sides of the heat-conducting housing 1.

[0046] Thus, by setting heat dissipation fins 3, the contact area between the heat-conducting shell 1 and the external water body is increased, that is, the heat dissipation area is increased, thereby improving the heat conduction efficiency of the heat-conducting shell 1.

[0047] Furthermore, several heat dissipation fins 3 are arranged at equal intervals.

[0048] In this way, by equidistantly arranging the heat dissipation fins 3, the heat conduction effect of the heat-conducting shell 1 can be made more uniform, thereby improving the heating effect.

[0049] In this embodiment, a plurality of heat dissipation fins 3 are arranged at equal intervals from the two feet of the U-shaped heat-conducting shell 1 toward the arc end.

[0050] Specifically, such as Figure 2 and Figure 3 As shown, a groove 4 is provided on the surface of one or two heat-conducting housings 1 that contacts the electric heating tube 2. The shape of the groove 4 matches the outer contour of the electric heating tube 2, and the groove 4 is used to place the electric heating tube 2. Preferably, the groove 4 is provided on the surface of two heat-conducting housings 1 that contacts the electric heating tube 2.

[0051] Thus, by matching the shape of the groove 4 with the outer contour of the electric heating tube 2, the inner wall of the heat-conducting shell 1 fits the electric heating tube 2 more closely when the electric heating tube 2 is placed inside the heat-conducting shell 1, and interference between the electric heating tube 2 and the heat-conducting shell 1 is also avoided.

[0052] In this embodiment, the cross-section of the groove 4 is semi-circular. The semi-circular grooves 4 of the two heat-conducting shells 1 are interlocked to form a circular cavity, and the electric heating tube 2 is disposed in the cavity.

[0053] Specifically, such as Figure 1 and Figure 2 As shown, both heat-conducting housings 1 are provided with several connecting holes 5. The connecting holes 5 do not intersect with the grooves 4. The connecting holes 5 are used for screws to pass through.

[0054] Thus, the above structure enables detachable connection and ensures that the screw connection will not cross the electric heating tube 2, reducing the risk of reduced overall structural strength of the heat-conducting shell 1 due to the presence of the connection hole 5.

[0055] In this embodiment, as Figure 2 As shown, there are three connection holes 5, but this number is only for illustrative purposes and can be adjusted by those skilled in the art according to actual conditions.

[0056] Specifically, one of the heat-conducting housings 1 is provided with a countersunk hole 6, and the connecting hole 5 is provided in the countersunk hole 6.

[0057] Thus, by setting the countersunk hole 6, the screw cap in the connecting hole 5 is hidden, improving the overall aesthetics of the protective shell of the electric heating tube.

[0058] In this embodiment, as Figure 3 As shown, the upper heat-conducting housing 1 is provided with three countersunk holes 6, and the three connecting holes 5 are all provided in the countersunk holes 6. The depth of the countersunk holes 6 is greater than the height of the nut of the screw used.

[0059] This embodiment also provides an electric heating device, which includes the above-described protective housing for the electric heating tube.

[0060] Thus, the protective outer shell of the electric heating element, through the aforementioned design, encloses the electric heating element 2 in a heat-conducting shell 1, isolating the electric heating element 2 from the water outside the heat-conducting shell 1. This achieves an indirect connection between the electric heating element 2 and the water, preventing scale from directly adhering to the heating element and causing it to crack, thereby extending the service life of the electric heating element 2 and reducing the risk of damage caused by its cracking. Furthermore, the split design facilitates the replacement and cleaning of the heat-conducting shell.

[0061] Specifically, the electric heating device also includes an electric heating element 2, such as Figure 1 As shown, the electric heating tube 2 includes a tube body and an energizing port 7 disposed at the end of the tube body. The energizing port 7 is used to provide power to the electric heating tube 2. The energizing port 7 extends out of the heat-conducting shell 1. The energizing port 7 includes a boss 8, which extends radially from the energizing port 7. The boss 8 is close to the outer wall surface of the heat-conducting shell 1 facing the surface of the heat-conducting shell 1.

[0062] In this way, the boss 8 clamps the outer wall of the heat sink, thereby fixing the heating element and preventing it from shaking, thus improving the firmness of the electric heating tube 2 in the heat-conducting housing 1.

[0063] Furthermore, the power port 7 also includes a thread along the axial direction of the tube body and a nut that mates with the thread. A seal 9 is provided between the nut and the boss 8. By providing the seal 9, water leakage is prevented at the connection between the electric heating tube 2 and the external electrical components, reducing the risk of short circuits caused by water leakage. In this embodiment, the seal 9 is a sealing ring; in other embodiments, it can also be a rubber seal.

[0064] The operation process is as follows: When the electric heating tube 2 is powered on, it starts to work and starts heating. At this time, the electric heating tube 2 will transfer heat to the two heat-conducting shells 1. Since the two heat-conducting shells 1 have a large surface area and are made of superior aluminum profiles, they absorb heat quickly and have a larger heat dissipation area than the electric heating tube 2. Therefore, the heat on the surface of the electric heating tube 2 can be greatly reduced. At the same time, the scale in the water cannot be directly connected to the electric heating tube 2, which can play a role in preventing scale buildup.

[0065] This embodiment also provides a water purifier, which includes the electric heating device as described above.

[0066] Thus, the protective outer shell of the electric heating element, through the aforementioned design, encloses the electric heating element 2 in a heat-conducting shell 1, isolating the electric heating element 2 from the water outside the heat-conducting shell 1. This achieves an indirect connection between the electric heating element 2 and the water, preventing scale from directly adhering to the heating element and causing it to crack, thereby extending the service life of the electric heating element 2 and reducing the risk of damage caused by its cracking. Furthermore, the split design facilitates the replacement and cleaning of the heat-conducting shell.

[0067] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this 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 this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A protective casing for an electric heating element, characterized in that, It is used in water purifiers. The protective shell of the electric heating tube includes two interlocking heat-conducting shells. The two heat-conducting shells are respectively covered on the electric heating tube from both sides to isolate the electric heating tube from the outside of the heat-conducting shells. The inner wall of the heat-conducting shell is in contact with the electric heating tube. The two heat-conducting shells are detachably connected. The heat-conducting shell is made of heat-conducting material.

2. The protective casing for the electric heating element as described in claim 1, characterized in that, At least one of the heat-conducting shells is provided with a plurality of heat dissipation fins on the outward side.

3. The protective casing for the electric heating element as described in claim 2, characterized in that, The heat dissipation fins are arranged at equal intervals.

4. The protective casing for the electric heating element as described in claim 1, characterized in that, A groove is provided on the surface of at least one of the heat-conducting housings that contacts the electric heating tube. The shape of the groove matches the outer contour of the electric heating tube, and the groove is for placing the electric heating tube.

5. The protective casing for the electric heating element as described in claim 4, characterized in that, Both of the heat-conducting housings are provided with a number of connection holes, which do not intersect with the grooves, and the connection holes are used for screws to pass through.

6. The protective shell for the electric heating element as described in claim 5, characterized in that, One of the heat-conducting housings is provided with a countersunk hole, and the connecting hole is provided inside the countersunk hole.

7. An electric heating device, characterized in that, It includes the protective housing for the electric heating element as described in any one of claims 1-6.

8. The electric heating device as described in claim 7, characterized in that, The electric heating device further includes an electric heating tube, which includes a tube body and an energizing port disposed at the end of the tube body. The energizing port is used to provide power to the electric heating tube. The energizing port extends out of the heat-conducting housing. The energizing port includes a boss that extends radially from the energizing port. The surface of the boss facing the heat-conducting housing is in close contact with the outer wall surface of the heat-conducting housing.

9. The electric heating device as described in claim 8, characterized in that, The power port also includes a thread along the axial direction of the tube body and a nut that mates with the thread, and a sealing element is provided between the nut and the boss.

10. A water purifier, characterized in that, It includes the electric heating device as described in any one of claims 7-9.

Images