Efficient boiled water generating device

Abstract

The utility model discloses an efficient boiled water generating device which comprises a water tank and a heating ball assembly, the water tank is connected with a water falling opening used for spraying water to the top of the heating ball assembly, the water falling opening is formed above the heating ball assembly, a valve body is arranged between the water falling opening and the water tank, and the heating ball assembly comprises an aluminum ball shell and an electric heating pipe. A hydrophilic ceramic membrane is arranged on the outer wall of the aluminum ball shell, and the electric heating tube is arranged on the inner wall of the aluminum ball shell. The boiled water generating device is high in water heating efficiency and easy to clean.

Description

Technical Field

[0001] The utility model relates to the field of boiling water generating devices, in particular to a high-efficiency boiling water generating device. Background Art

[0002] At present, some water dispensers use bottled drinking water as a water source, and some water dispensers also have a hot water function. Specifically, a water tank is provided in the water dispenser, and the water in the inverted bottled drinking water falls into the water tank. The bottom of the water tank is connected to a heat pipe, and the heat pipe is correspondingly provided with an electric heating device. The electric heating device heats the above-mentioned heat pipe to keep the water in the heat pipe at a constant temperature of about 90 degrees Celsius (to prevent the steam generated by boiling from causing excessive pressure in the heat pipe). When the user turns on the hot water tap, the water in the heat pipe will be discharged, so the water in the heat pipe may stay for a long time and be in a near-boiling state for a long time. Therefore, the water discharged from the hot water tap is not as fresh and clean as the water discharged from the normal temperature tap. However, if the instant heating effect is to be achieved, due to the low heat exchange efficiency between water and the heat pipe (or pipe structure), the water dispenser needs to be equipped with a high-power electric heating device, which not only makes it inconvenient to obtain electricity for the water dispenser, but also wastes electricity. Therefore, it is necessary to improve the heating structure of the existing technology. Summary of the Invention

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a boiling water generating device which has a high efficiency in producing hot water.

[0004] The purpose of this utility model is achieved through the following technical solutions.

[0005] The utility model discloses a high-efficiency boiling water generating device, comprising a water tank and a heating ball assembly, wherein the water tank is connected to a water outlet for spraying water onto the top of the heating ball assembly, the water outlet is arranged above the heating ball assembly, and a valve body is arranged between the water outlet and the water tank, the heating ball assembly comprises an aluminum ball shell and an electric heating tube, a hydrophilic ceramic film is provided on the outer wall of the aluminum ball shell, and the electric heating tube is arranged on the inner wall of the aluminum ball shell.

[0006] Preferably, the hot water generating device of the present invention further comprises a water receiving tray, which is arranged directly below the heating ball assembly and has a drain outlet.

[0007] Preferably, the boiling water generating device of the present invention further comprises a support column, which is fixedly connected to the bottom end of the heating ball assembly and is adapted to pass through the water receiving tray.

[0008] Preferably, a threading hole is formed at the axis of the support column, and the threading hole is connected to the inner cavity of the aluminum spherical shell.

[0009] Preferably, the upper end of the support column is screwed to the aluminum spherical shell.

[0010] Preferably, the boiling water generating device of the present invention also includes an insulating cover, the lower end of the insulating cover is open, the insulating cover includes a cover side wall and a cover top plate, the upper end of the cover side wall is connected to the outer peripheral edge of the cover top plate, a water hole is formed on the cover top plate, the heating ball assembly is arranged in the insulating cover, the position of the water hole corresponds to the water outlet, and the lower end of the insulating cover is arranged within the corresponding range of the water receiving tray.

[0011] Preferably, the thermal insulation cover has a cylindrical shape.

[0012] Preferably, the electric heating tube is in a circular shape and is arranged horizontally.

[0013] Preferably, the electric heating tubes are arranged at intervals in the vertical direction.

[0014] Preferably, the heating ball assembly includes an upper hemisphere and a lower hemisphere, an inverted step is formed on the inner wall of the lower end of the upper hemisphere, and a water retaining convex ring is formed on the upper end of the lower hemisphere, and the water retaining convex ring is adaptively connected to the inverted step.

[0015] Compared with the prior art, the utility model has the following beneficial effects: a water tank is connected to a water outlet for pouring water onto the top of the heating ball assembly, the water outlet is arranged above the heating ball assembly, a valve body is arranged between the water outlet and the water tank, the heating ball assembly includes an aluminum ball shell and an electric heating tube, a hydrophilic ceramic film is arranged on the outer wall of the aluminum ball shell, and the electric heating tube is arranged on the inner wall of the aluminum ball shell, which is beneficial to improving the efficiency of hot water production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of the high-efficiency boiling water generating device of the present utility model.

[0017] Figure 2 This is a schematic cross-sectional view of the heating ball assembly and support column combination of the present invention.

[0018] Figure 3 for Figure 2 Schematic diagram of the local structure.

[0019] Figure 4 It is a schematic top view of the heat insulation cover of the present invention.

[0020] Figure 5 This is a schematic top view of the structure of the water receiving tray and support column combination of the present invention.

[0021] Explanation of reference numerals: water tank 10; drain outlet 11; valve body 12; heating ball assembly 2; upper hemisphere 21; inverted step 211; lower hemisphere 22; water retaining convex ring 221; aluminum spherical shell 201; electric heating tube 202; covering portion 203; hydrophilic ceramic membrane 204; thermal insulation cover 3; water hole 301; cover side wall 31; cover top plate 32; water receiving tray 4; drain outlet 41; support column 5; threading hole 501; support step 502. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] The high-efficiency boiling water generating device of the utility model is as follows: Figure 1 As shown, it includes a water tank 10 and a heating ball assembly 2. The water tank 10 is connected to a water outlet 11 for pouring water to the top of the heating ball assembly 2. The water outlet 11 is located above the heating ball assembly 2. A valve body 12 is provided between the water outlet 11 and the water tank 10. Specifically, the bottom of the water tank 10 is connected to a water pipe. The water outlet 11 is formed at the lower end of the water pipe. The valve body 12 can be a solenoid valve. Figure 2 As shown, the heating ball assembly 2 includes an aluminum shell 201 and an electric heating pipe 202. The aluminum shell 201 is spherical in shape. A hydrophilic ceramic membrane 204 is provided on the outer wall of the aluminum shell 201. This hydrophilic ceramic membrane 204 is known from the prior art, as exemplified by Chinese Utility Model Publication No. CN104630756B, "Method for Forming a Highly Thermally Conductive Hydrophilic Nano-Ceramic Film on an Aluminum Surface," and Chinese Utility Model Publication No. CN210881273U, "A Lithographic Metering Roller." This imparts excellent hydrophilicity to the surface of the heating ball assembly 2. Furthermore, the hydrophilic ceramic membrane 204 exhibits excellent thermal conductivity and high temperature resistance. The electric heating pipe 202 is provided on the inner wall of the aluminum shell 201.

[0024] The working principle of the hot water generating device of the utility model is briefly described below: Figure 1As shown, the electric heating tube 202 is energized to generate heat, and the heat generated by the electric heating tube 202 is transferred to the aluminum spherical shell 201. The aluminum spherical shell 201 heats the hydrophilic ceramic membrane 204, so that the surface temperature of the heating ball assembly 2 is increased, and the surface temperature of the heating ball assembly 2 is increased to more than 100 degrees Celsius (for example, it can be about 130 degrees Celsius to 160 degrees Celsius). The water tank 10 is filled with drinking water. When the valve body 12 is opened, the water in the water tank 10 (through the action of gravity) reaches the downspout 11 through the downspout, and the water is poured on the top of the heating ball assembly 2. Since the hydrophilic ceramic membrane 204 is provided on the outer wall of the aluminum spherical shell 201, the surface of the heating ball assembly 2 has good hydrophilicity, so the water falling on the top of the heating ball assembly 2 can be well diffused to cover the surface of the heating ball assembly 2, which is beneficial to increase the contact between the heating ball assembly 2 and the water. The contact area is conducive to quickly heating up the water flowing through the surface of the heating ball component 2. Also, due to the good hydrophilicity of the surface of the heating ball component 2, the flow rate of the water on the surface of the heating ball component 2 is relatively low, which is conducive to increasing the time for the heating ball component 2 to heat the water and is conducive to heating up the water flowing through the surface of the heating ball component 2. After that, the water flows downward along the surface of the heating ball component 2 and converges to the bottom end of the heating ball component 2. The water falls and leaves the heating ball component 2 due to the action of gravity. In the process of the water flowing through the surface of the heating ball component 2, since the water flow is expanded into a spherical shape, a water layer with a smaller thickness is actually formed on the heating ball component 2. Therefore, the heat emitted outward by the heating ball component 2 can be quickly transferred to the outer end of the above-mentioned water layer, so that the above-mentioned water flow quickly rises to a high temperature or even boils.

[0025] When the boiling water generating device of the present invention is applied to a water dispenser, the water dispenser is provided with a hot water tap. The structure of the hot water tap can be exemplified by the "push-type anti-scalding water dispenser tap" of Chinese utility model patent publication number CN111839229B. The pressure plate of the hot water tap can be connected to a switch, which is electrically connected to the valve body 12. The water dispenser is provided with a preheating button and a preheating completion indicator light. A temperature sensor can be provided on the inner wall of the aluminum ball shell 201. The water in the bottled drinking water flows into the water tank 10. The user presses the preheating button to make the heating ball assembly 2 start to heat up. After a short wait, the temperature sensor detects that the aluminum ball shell 201 reaches a preset temperature, indicating that preheating is complete. The controller controls the preheating completion indicator light to light up according to the signal from the temperature sensor. The user swings the pressure plate to open the hot water tap, which simultaneously causes the switch to connect the valve body 12 to power. The valve body 12 opens, and the water outlet 11 sprays water at a small flow rate on the top of the heating ball assembly 2, thereby producing boiling water. The boiling water is drained to the hot water tap through the pipe and discharged. If the hot water function is not used for a long time, the power supply of the electric heating tube 202 can be turned off.

[0026] Compared to the existing heat bulb heating structure, the heating bulb assembly 2 of the present invention utilizes an open heating structure. Therefore, the steam generated by boiling water does not pose a potential risk of container explosion. Furthermore, the hydrophilic ceramic membrane 204, combined with the spherical structure of the heating bulb assembly 2, effectively disperses the water, increasing the contact area between the water and the heating bulb assembly 2, significantly improving heat exchange efficiency. While the heating bulb (or pipe structure) heats the water through its inner wall, heat dissipates outward, leading to significant heat loss. However, the heat dissipated by the heating bulb assembly 2 of the present invention is precisely transferred to the water, resulting in relatively little ineffective heat loss. As can be seen from the foregoing, the boiling water generator of the present invention efficiently heats water. Because the required flow rate for the water dispenser is relatively low, instant heating can be achieved without requiring a high power setting for the electric heating tube 202, eliminating the need for a hot water storage container and ensuring fresh, clean hot water. The heating bulb assembly 2's outer surface contacts the water, making it relatively easy to clean.

[0027] Further, if Figure 1 and Figure 5 As shown, the hot water generating device of the present invention further includes a water receiving tray 4, which is located directly below the heating ball assembly 2. A drain outlet 401 is provided on the outer periphery of the water receiving tray 4. The water receiving tray 4 can be made of stainless steel, so that water flowing through the surface of the heating ball assembly 2 is collected at the bottom of the heating ball assembly 2, and the hot water then falls onto the water receiving tray 4 and is then discharged through the drain outlet 401. The drain outlet 401 can have a notch structure or a hole structure, and the drain outlet 401 can be connected to a hot water faucet via a pipe.

[0028] Further, if Figure 1 As shown, the hot water generating device of the present invention also includes a support column 5, which is fixedly connected to the bottom end of the heating ball assembly 2, and the support column 5 is adapted to pass through the water receiving tray 4. The support column 5 can be made of stainless steel. For example, the lower end of the support column 5 can be fixed to the internal structure of the water dispenser. The support column 5 can be cylindrical, and a circular hole is formed in the middle of the water receiving tray 4. The edge of the circular hole is sealed and welded to the outer wall of the support column 5, such as Figure 1 As shown, the water receiving tray 4 is preferably tilted relative to the horizontal plane so that the height of the drain outlet 401 is relatively low to avoid water remaining in the water receiving tray 4.

[0029] Further, if Figure 2 As shown, a wire threading hole 501 is formed at the axis of the support column 5, and the wire threading hole 501 is connected to the inner cavity of the aluminum ball shell 201, so that the lead wire of the electric heating tube 202 can be led out of the heating ball assembly 2 through the wire threading hole 501, and the above-mentioned wire can be passed downward along the wire threading hole 501 through the water receiving tray 4 to avoid contact between the wire and water.

[0030] Further, if Figure 2 As shown, the upper end of the support column 5 is screwed to the aluminum spherical shell 201. Specifically, the upper end of the support column 5 is formed with an external thread, and the bottom end of the aluminum spherical shell 201 is formed with a screw hole. The external thread is connected to the screw hole, so that the support column 5 and the aluminum spherical shell 201 are installed and connected with each other in a simple structure. Figure 2 As shown, a support step 502 may also be formed on the support column 5 , and the support step 502 is in contact with the outer wall of the lower end of the aluminum spherical shell 201 .

[0031] Further, if Figure 1 As shown, the hot water generating device of the present invention further comprises an insulating cover 3, the lower end of the insulating cover 3 is open, that is, there is no sealing plate at the lower end of the insulating cover 3, the insulating cover 3 comprises a cover side wall 31 and a cover top plate 32, the upper end of the cover side wall 31 is connected to the outer peripheral edge of the cover top plate 32, as shown in FIG. Figure 1 and Figure 4 As shown, a water hole 301 is formed on the top plate 32. Figure 1 As shown, the heating ball assembly 2 is arranged in the insulation cover 3, the water hole 301 is located at the position corresponding to the drain port 11, and the lower end of the insulation cover 3 is located in the corresponding range of the water receiving tray 4. That is, when viewed from above, the insulation cover 3 is within the range of the water receiving tray 4, and the drain port 11, the water hole 301 and the top of the heating ball assembly 2 are preferably located on the same vertical axis, wherein the drain port 11 can be above the water hole 301, or the drain port 11 can extend downward into the water hole 301, so that the water discharged from the drain port 11 can pass through the above-mentioned water hole 301. When the water on the surface of the heating ball assembly 2 boils, steam is generated, and the steam is covered by the insulation cover 3 to prevent a large amount of steam from overflowing. A small amount of water droplets condensed on the inner wall of the insulation cover 3 can fall onto the water receiving tray 4. The insulation cover 3 also plays a role in preventing the heat of the heating ball assembly 2 and the water flowing through the surface of the heating ball assembly 2 from being lost to the outside. The heat-insulating cover 3 can be made of plastic, and a bracket can be provided to be installed and connected to the outer top of the cover top plate 32 .

[0032] Further, if Figure 1 and Figure 4 As shown, the outer shape of the heat insulating cover 3 is cylindrical, so the heat insulating cover 3 can well match the outer shape of the heating ball assembly 2. The center of the heating ball assembly 2 is located at the central axis of the heat insulating cover 3. In other words, the side wall 31 of the cover is cylindrical, and the top plate 32 of the cover is a circular flat plate. Figure 1 As shown, the horizontally arranged top plate 32 has a poor steam guiding effect, preventing a large amount of steam from flowing along the top plate 32 to the water holes 301 .

[0033] Further, if Figure 2As shown, the electric heating tube 202 is in a circular shape and is arranged horizontally. In other words, the electric heating tube 202 is extended along the latitude of the aluminum spherical shell 201. Therefore, when the water flows downward along the surface of the heating ball assembly 2, the water around the entire circumference will receive heat delivered by the corresponding parts of the electric heating tube 202, which can avoid the formation of local heating weak areas in the heating ball assembly 2.

[0034] Further, if Figure 2 As shown, the electric heating tubes 202 are arranged at intervals along the vertical direction. In other words, the electric heating tubes 202 are arranged correspondingly on several latitudes of the aluminum spherical shell 201, which is conducive to uniform heating of the heating ball assembly 2 from top to bottom and is conducive to improving the efficiency of heating the water. Figure 2 As shown, the electric heating tube 202 is provided with a covering portion 203, which is integrally formed with the inner wall of the aluminum shell 201, facilitating efficient transfer of heat generated by the electric heating tube 202 to the aluminum shell 201. For example, the electric heating tube 202 may include a stainless steel shell and a resistance wire, wherein the resistance wire is disposed within the stainless steel shell, and magnesium oxide powder is disposed between the resistance wire and the stainless steel shell for insulation.

[0035] Further, if Figure 2 and Figure 3 As shown, the heating ball assembly 2 includes an upper hemisphere 21 and a lower hemisphere 22. An inverted step 211 is formed on the inner wall of the lower end of the upper hemisphere 21, and a water-retaining convex ring portion 221 is formed on the upper end of the lower hemisphere 22. That is to say, the water-retaining convex ring portion 221 is upwardly protruding, and the water-retaining convex ring portion 221 is adapted to be connected with the inverted step 211. In other words, the heating ball assembly 2 is an upper and lower assembly structure (that is, the aluminum sphere shell 201 is also an upper and lower assembly structure). Due to the hemispherical structure, the inner wall of the upper hemisphere 21 and the inner wall of the lower hemisphere 22 can be exposed, which facilitates the aluminum sphere shell 201 to be divided into upper and lower halves for independent casting and molding, and facilitates first passing the lead wires of the electric heating tube 202 out of the heating ball assembly 2, and then assembling the upper hemisphere 21 and the lower hemisphere 22. The water-retaining convex ring portion 221 is adapted to be connected with the inverted step 211, so that the upper hemisphere 21 and the lower hemisphere 22 are radially positioned relative to each other. As shown Figure 3 As shown, since the inverted step 211 is located on the inner wall of the lower end of the upper hemisphere 21, in other words, the water retaining convex ring portion 221 is also arranged radially inward, water may penetrate into the gap between the upper hemisphere 21 and the lower hemisphere 22. The water retaining convex ring portion 221 can prevent the infiltrated water from further entering the interior of the aluminum spherical shell 201. The water retaining convex ring portion 221 and the inverted step 211 can be an interference fit.

Claims

1. A high-efficiency boiling water generating device, characterized by: The invention comprises a water tank (10) and a heating ball assembly (2), wherein the water tank (10) is connected to a water outlet (11) for spraying water onto the top of the heating ball assembly (2), the water outlet (11) is arranged above the heating ball assembly (2), and a valve body (12) is arranged between the water outlet (11) and the water tank (10), and the heating ball assembly (2) comprises an aluminum spherical shell (201) and an electric heating tube (202), a hydrophilic ceramic film (204) is arranged on the outer wall of the aluminum spherical shell (201), and the electric heating tube (202) is arranged on the inner wall of the aluminum spherical shell (201).

2. The high-efficiency hot water generating device according to claim 1, characterized in that: It also includes a water receiving tray (4), which is arranged directly below the heating ball assembly (2), and is provided with a drainage outlet (401).

3. The high-efficiency hot water generating device according to claim 2, characterized in that: It also includes a support column (5), the support column (5) is fixedly connected to the bottom end of the heating ball assembly (2), and the support column (5) is adapted to pass through the water receiving tray (4).

4. The high-efficiency hot water generating device according to claim 3, characterized in that: A threading hole (501) is formed at the axis of the support column (5), and the threading hole (501) is connected to the inner cavity of the aluminum spherical shell (201).

5. The high-efficiency hot water generating device according to claim 4, characterized in that: The upper end of the support column (5) is screwed to the aluminum spherical shell (201).

6. The high-efficiency hot water generating device according to claim 2, characterized in that: The heat insulating cover (3) is also included. The lower end of the heat insulating cover (3) is open. The heat insulating cover (3) includes a cover side wall (31) and a cover top plate (32). The upper end of the cover side wall (31) is connected to the outer peripheral edge of the cover top plate (32). A water hole (301) is formed on the cover top plate (32). The heating ball assembly (2) is arranged in the heat insulating cover (3). The position of the water hole (301) corresponds to the water outlet (11). The lower end of the heat insulating cover (3) is arranged in the corresponding range of the water receiving tray (4).

7. The high-efficiency hot water generating device according to claim 6, characterized in that: The heat-insulating cover (3) has a cylindrical shape.

8. The high-efficiency hot water generating device according to claim 1, characterized in that: The electric heating tube (202) is in the shape of a ring and is arranged horizontally.

9. The high-efficiency hot water generating device according to claim 8, characterized in that: The electric heating tubes (202) are arranged at intervals in the vertical direction.

10. The high-efficiency hot water generating device according to any one of claims 1 to 9, characterized in that: The heating ball assembly (2) comprises an upper hemisphere (21) and a lower hemisphere (22); an inverted step (211) is formed on the inner wall of the lower end of the upper hemisphere (21); a water retaining convex ring portion (221) is formed on the upper end of the lower hemisphere (22); the water retaining convex ring portion (221) is adaptively connected to the inverted step (211).

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